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ixgbe_main.c
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linux-6.19.14/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
1// SPDX-License-Identifier: GPL-2.0 2/* Copyright(c) 1999 - 2024 Intel Corporation. */ 3 4#include <linux/types.h> 5#include <linux/module.h> 6#include <linux/pci.h> 7#include <linux/netdevice.h> 8#include <linux/vmalloc.h> 9#include <linux/string.h> 10#include <linux/in.h> 11#include <linux/interrupt.h> 12#include <linux/iopoll.h> 13#include <linux/ip.h> 14#include <linux/tcp.h> 15#include <linux/sctp.h> 16#include <linux/pkt_sched.h> 17#include <linux/ipv6.h> 18#include <linux/slab.h> 19#include <net/checksum.h> 20#include <net/ip6_checksum.h> 21#include <linux/etherdevice.h> 22#include <linux/ethtool.h> 23#include <linux/if.h> 24#include <linux/if_vlan.h> 25#include <linux/if_macvlan.h> 26#include <linux/if_bridge.h> 27#include <linux/prefetch.h> 28#include <linux/bpf.h> 29#include <linux/bpf_trace.h> 30#include <linux/atomic.h> 31#include <linux/numa.h> 32#include <generated/utsrelease.h> 33#include <scsi/fc/fc_fcoe.h> 34#include <net/udp_tunnel.h> 35#include <net/pkt_cls.h> 36#include <net/tc_act/tc_gact.h> 37#include <net/tc_act/tc_mirred.h> 38#include <net/vxlan.h> 39#include <net/mpls.h> 40#include <net/netdev_queues.h> 41#include <net/xdp_sock_drv.h> 42#include <net/xfrm.h> 43 44#include "ixgbe.h" 45#include "ixgbe_common.h" 46#include "ixgbe_e610.h" 47#include "ixgbe_dcb_82599.h" 48#include "ixgbe_mbx.h" 49#include "ixgbe_phy.h" 50#include "ixgbe_sriov.h" 51#include "ixgbe_model.h" 52#include "ixgbe_txrx_common.h" 53#include "devlink/devlink.h" 54 55char ixgbe_driver_name[] = "ixgbe"; 56static const char ixgbe_driver_string[] = 57 "Intel(R) 10 Gigabit PCI Express Network Driver"; 58#ifdef IXGBE_FCOE 59char ixgbe_default_device_descr[] = 60 "Intel(R) 10 Gigabit Network Connection"; 61#else 62static char ixgbe_default_device_descr[] = 63 "Intel(R) 10 Gigabit Network Connection"; 64#endif 65static const char ixgbe_copyright[] = 66 "Copyright (c) 1999-2016 Intel Corporation."; 67 68static const char ixgbe_overheat_msg[] = "Network adapter has been stopped because it has over heated. Restart the computer. If the problem persists, power off the system and replace the adapter"; 69 70static const struct ixgbe_info *ixgbe_info_tbl[] = { 71 [board_82598] = &ixgbe_82598_info, 72 [board_82599] = &ixgbe_82599_info, 73 [board_X540] = &ixgbe_X540_info, 74 [board_X550] = &ixgbe_X550_info, 75 [board_X550EM_x] = &ixgbe_X550EM_x_info, 76 [board_x550em_x_fw] = &ixgbe_x550em_x_fw_info, 77 [board_x550em_a] = &ixgbe_x550em_a_info, 78 [board_x550em_a_fw] = &ixgbe_x550em_a_fw_info, 79 [board_e610] = &ixgbe_e610_info, 80}; 81 82/* ixgbe_pci_tbl - PCI Device ID Table 83 * 84 * Wildcard entries (PCI_ANY_ID) should come last 85 * Last entry must be all 0s 86 * 87 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID, 88 * Class, Class Mask, private data (not used) } 89 */ 90static const struct pci_device_id ixgbe_pci_tbl[] = { 91 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598), board_82598 }, 92 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_DUAL_PORT), board_82598 }, 93 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AF_SINGLE_PORT), board_82598 }, 94 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT), board_82598 }, 95 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598AT2), board_82598 }, 96 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_CX4), board_82598 }, 97 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_CX4_DUAL_PORT), board_82598 }, 98 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_DA_DUAL_PORT), board_82598 }, 99 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_SR_DUAL_PORT_EM), board_82598 }, 100 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_XF_LR), board_82598 }, 101 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598EB_SFP_LOM), board_82598 }, 102 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82598_BX), board_82598 }, 103 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4), board_82599 }, 104 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_XAUI_LOM), board_82599 }, 105 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KR), board_82599 }, 106 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP), board_82599 }, 107 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_EM), board_82599 }, 108 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_KX4_MEZZ), board_82599 }, 109 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_CX4), board_82599 }, 110 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_BACKPLANE_FCOE), board_82599 }, 111 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_FCOE), board_82599 }, 112 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_T3_LOM), board_82599 }, 113 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_COMBO_BACKPLANE), board_82599 }, 114 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T), board_X540 }, 115 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF2), board_82599 }, 116 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_LS), board_82599 }, 117 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_QSFP_SF_QP), board_82599 }, 118 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599EN_SFP), board_82599 }, 119 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_82599_SFP_SF_QP), board_82599 }, 120 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X540T1), board_X540 }, 121 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T), board_X550}, 122 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550T1), board_X550}, 123 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KX4), board_X550EM_x}, 124 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_XFI), board_X550EM_x}, 125 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_KR), board_X550EM_x}, 126 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_10G_T), board_X550EM_x}, 127 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_SFP), board_X550EM_x}, 128 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_X_1G_T), board_x550em_x_fw}, 129 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR), board_x550em_a }, 130 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_KR_L), board_x550em_a }, 131 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP_N), board_x550em_a }, 132 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII), board_x550em_a }, 133 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SGMII_L), board_x550em_a }, 134 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_10G_T), board_x550em_a}, 135 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_SFP), board_x550em_a }, 136 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T), board_x550em_a_fw }, 137 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_X550EM_A_1G_T_L), board_x550em_a_fw }, 138 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_BACKPLANE), board_e610}, 139 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_SFP), board_e610}, 140 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_10G_T), board_e610}, 141 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_2_5G_T), board_e610}, 142 {PCI_VDEVICE(INTEL, IXGBE_DEV_ID_E610_SGMII), board_e610}, 143 /* required last entry */ 144 {0, } 145}; 146MODULE_DEVICE_TABLE(pci, ixgbe_pci_tbl); 147 148#ifdef CONFIG_IXGBE_DCA 149static int ixgbe_notify_dca(struct notifier_block *, unsigned long event, 150 void *p); 151static struct notifier_block dca_notifier = { 152 .notifier_call = ixgbe_notify_dca, 153 .next = NULL, 154 .priority = 0 155}; 156#endif 157 158#ifdef CONFIG_PCI_IOV 159static unsigned int max_vfs; 160module_param(max_vfs, uint, 0); 161MODULE_PARM_DESC(max_vfs, 162 "Maximum number of virtual functions to allocate per physical function - default is zero and maximum value is 63. (Deprecated)"); 163#endif /* CONFIG_PCI_IOV */ 164 165static bool allow_unsupported_sfp; 166module_param(allow_unsupported_sfp, bool, 0444); 167MODULE_PARM_DESC(allow_unsupported_sfp, 168 "Allow unsupported and untested SFP+ modules on 82599-based adapters"); 169 170#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) 171static int debug = -1; 172module_param(debug, int, 0); 173MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); 174 175MODULE_IMPORT_NS("LIBIE_FWLOG"); 176MODULE_DESCRIPTION("Intel(R) 10 Gigabit PCI Express Network Driver"); 177MODULE_LICENSE("GPL v2"); 178 179DEFINE_STATIC_KEY_FALSE(ixgbe_xdp_locking_key); 180EXPORT_SYMBOL(ixgbe_xdp_locking_key); 181 182static struct workqueue_struct *ixgbe_wq; 183 184static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev); 185static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *); 186static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *); 187static void ixgbe_watchdog_update_link(struct ixgbe_adapter *); 188 189static const struct net_device_ops ixgbe_netdev_ops; 190 191static bool netif_is_ixgbe(struct net_device *dev) 192{ 193 return dev && (dev->netdev_ops == &ixgbe_netdev_ops); 194} 195 196static int ixgbe_read_pci_cfg_word_parent(struct ixgbe_adapter *adapter, 197 u32 reg, u16 *value) 198{ 199 struct pci_dev *parent_dev; 200 struct pci_bus *parent_bus; 201 202 parent_bus = adapter->pdev->bus->parent; 203 if (!parent_bus) 204 return -1; 205 206 parent_dev = parent_bus->self; 207 if (!parent_dev) 208 return -1; 209 210 if (!pci_is_pcie(parent_dev)) 211 return -1; 212 213 pcie_capability_read_word(parent_dev, reg, value); 214 if (*value == IXGBE_FAILED_READ_CFG_WORD && 215 ixgbe_check_cfg_remove(&adapter->hw, parent_dev)) 216 return -1; 217 return 0; 218} 219 220static int ixgbe_get_parent_bus_info(struct ixgbe_adapter *adapter) 221{ 222 struct ixgbe_hw *hw = &adapter->hw; 223 u16 link_status = 0; 224 int err; 225 226 hw->bus.type = ixgbe_bus_type_pci_express; 227 228 /* Get the negotiated link width and speed from PCI config space of the 229 * parent, as this device is behind a switch 230 */ 231 err = ixgbe_read_pci_cfg_word_parent(adapter, 18, &link_status); 232 233 /* assume caller will handle error case */ 234 if (err) 235 return err; 236 237 hw->bus.width = ixgbe_convert_bus_width(link_status); 238 hw->bus.speed = ixgbe_convert_bus_speed(link_status); 239 240 return 0; 241} 242 243/** 244 * ixgbe_pcie_from_parent - Determine whether PCIe info should come from parent 245 * @hw: hw specific details 246 * 247 * This function is used by probe to determine whether a device's PCI-Express 248 * bandwidth details should be gathered from the parent bus instead of from the 249 * device. Used to ensure that various locations all have the correct device ID 250 * checks. 251 * 252 * Return: true if information should be collected from the parent bus, false 253 * otherwise 254 */ 255static bool ixgbe_pcie_from_parent(struct ixgbe_hw *hw) 256{ 257 switch (hw->device_id) { 258 case IXGBE_DEV_ID_82599_SFP_SF_QP: 259 case IXGBE_DEV_ID_82599_QSFP_SF_QP: 260 return true; 261 default: 262 return false; 263 } 264} 265 266static void ixgbe_check_minimum_link(struct ixgbe_adapter *adapter, 267 int expected_gts) 268{ 269 struct ixgbe_hw *hw = &adapter->hw; 270 struct pci_dev *pdev; 271 272 /* Some devices are not connected over PCIe and thus do not negotiate 273 * speed. These devices do not have valid bus info, and thus any report 274 * we generate may not be correct. 275 */ 276 if (hw->bus.type == ixgbe_bus_type_internal) 277 return; 278 279 /* determine whether to use the parent device */ 280 if (ixgbe_pcie_from_parent(&adapter->hw)) 281 pdev = adapter->pdev->bus->parent->self; 282 else 283 pdev = adapter->pdev; 284 285 pcie_print_link_status(pdev); 286} 287 288static void ixgbe_service_event_schedule(struct ixgbe_adapter *adapter) 289{ 290 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 291 !test_bit(__IXGBE_REMOVING, &adapter->state) && 292 !test_and_set_bit(__IXGBE_SERVICE_SCHED, &adapter->state)) 293 queue_work(ixgbe_wq, &adapter->service_task); 294} 295 296static void ixgbe_remove_adapter(struct ixgbe_hw *hw) 297{ 298 struct ixgbe_adapter *adapter = hw->back; 299 300 if (!hw->hw_addr) 301 return; 302 hw->hw_addr = NULL; 303 e_dev_err("Adapter removed\n"); 304 if (test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 305 ixgbe_service_event_schedule(adapter); 306} 307 308static u32 ixgbe_check_remove(struct ixgbe_hw *hw, u32 reg) 309{ 310 u8 __iomem *reg_addr; 311 u32 value; 312 int i; 313 314 reg_addr = READ_ONCE(hw->hw_addr); 315 if (ixgbe_removed(reg_addr)) 316 return IXGBE_FAILED_READ_REG; 317 318 /* Register read of 0xFFFFFFF can indicate the adapter has been removed, 319 * so perform several status register reads to determine if the adapter 320 * has been removed. 321 */ 322 for (i = 0; i < IXGBE_FAILED_READ_RETRIES; i++) { 323 value = readl(reg_addr + IXGBE_STATUS); 324 if (value != IXGBE_FAILED_READ_REG) 325 break; 326 mdelay(3); 327 } 328 329 if (value == IXGBE_FAILED_READ_REG) 330 ixgbe_remove_adapter(hw); 331 else 332 value = readl(reg_addr + reg); 333 return value; 334} 335 336/** 337 * ixgbe_read_reg - Read from device register 338 * @hw: hw specific details 339 * @reg: offset of register to read 340 * 341 * Returns : value read or IXGBE_FAILED_READ_REG if removed 342 * 343 * This function is used to read device registers. It checks for device 344 * removal by confirming any read that returns all ones by checking the 345 * status register value for all ones. This function avoids reading from 346 * the hardware if a removal was previously detected in which case it 347 * returns IXGBE_FAILED_READ_REG (all ones). 348 */ 349u32 ixgbe_read_reg(struct ixgbe_hw *hw, u32 reg) 350{ 351 u8 __iomem *reg_addr = READ_ONCE(hw->hw_addr); 352 u32 value; 353 354 if (ixgbe_removed(reg_addr)) 355 return IXGBE_FAILED_READ_REG; 356 if (unlikely(hw->phy.nw_mng_if_sel & 357 IXGBE_NW_MNG_IF_SEL_SGMII_ENABLE)) { 358 struct ixgbe_adapter *adapter; 359 int i; 360 361 for (i = 0; i < 200; ++i) { 362 value = readl(reg_addr + IXGBE_MAC_SGMII_BUSY); 363 if (likely(!value)) 364 goto writes_completed; 365 if (value == IXGBE_FAILED_READ_REG) { 366 ixgbe_remove_adapter(hw); 367 return IXGBE_FAILED_READ_REG; 368 } 369 udelay(5); 370 } 371 372 adapter = hw->back; 373 e_warn(hw, "register writes incomplete %08x\n", value); 374 } 375 376writes_completed: 377 value = readl(reg_addr + reg); 378 if (unlikely(value == IXGBE_FAILED_READ_REG)) 379 value = ixgbe_check_remove(hw, reg); 380 return value; 381} 382 383static bool ixgbe_check_cfg_remove(struct ixgbe_hw *hw, struct pci_dev *pdev) 384{ 385 u16 value; 386 387 pci_read_config_word(pdev, PCI_VENDOR_ID, &value); 388 if (value == IXGBE_FAILED_READ_CFG_WORD) { 389 ixgbe_remove_adapter(hw); 390 return true; 391 } 392 return false; 393} 394 395u16 ixgbe_read_pci_cfg_word(struct ixgbe_hw *hw, u32 reg) 396{ 397 struct ixgbe_adapter *adapter = hw->back; 398 u16 value; 399 400 if (ixgbe_removed(hw->hw_addr)) 401 return IXGBE_FAILED_READ_CFG_WORD; 402 pci_read_config_word(adapter->pdev, reg, &value); 403 if (value == IXGBE_FAILED_READ_CFG_WORD && 404 ixgbe_check_cfg_remove(hw, adapter->pdev)) 405 return IXGBE_FAILED_READ_CFG_WORD; 406 return value; 407} 408 409#ifdef CONFIG_PCI_IOV 410static u32 ixgbe_read_pci_cfg_dword(struct ixgbe_hw *hw, u32 reg) 411{ 412 struct ixgbe_adapter *adapter = hw->back; 413 u32 value; 414 415 if (ixgbe_removed(hw->hw_addr)) 416 return IXGBE_FAILED_READ_CFG_DWORD; 417 pci_read_config_dword(adapter->pdev, reg, &value); 418 if (value == IXGBE_FAILED_READ_CFG_DWORD && 419 ixgbe_check_cfg_remove(hw, adapter->pdev)) 420 return IXGBE_FAILED_READ_CFG_DWORD; 421 return value; 422} 423#endif /* CONFIG_PCI_IOV */ 424 425void ixgbe_write_pci_cfg_word(struct ixgbe_hw *hw, u32 reg, u16 value) 426{ 427 struct ixgbe_adapter *adapter = hw->back; 428 429 if (ixgbe_removed(hw->hw_addr)) 430 return; 431 pci_write_config_word(adapter->pdev, reg, value); 432} 433 434static void ixgbe_service_event_complete(struct ixgbe_adapter *adapter) 435{ 436 BUG_ON(!test_bit(__IXGBE_SERVICE_SCHED, &adapter->state)); 437 438 /* flush memory to make sure state is correct before next watchdog */ 439 smp_mb__before_atomic(); 440 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 441} 442 443struct ixgbe_reg_info { 444 u32 ofs; 445 char *name; 446}; 447 448static const struct ixgbe_reg_info ixgbe_reg_info_tbl[] = { 449 450 /* General Registers */ 451 {IXGBE_CTRL, "CTRL"}, 452 {IXGBE_STATUS, "STATUS"}, 453 {IXGBE_CTRL_EXT, "CTRL_EXT"}, 454 455 /* Interrupt Registers */ 456 {IXGBE_EICR, "EICR"}, 457 458 /* RX Registers */ 459 {IXGBE_SRRCTL(0), "SRRCTL"}, 460 {IXGBE_DCA_RXCTRL(0), "DRXCTL"}, 461 {IXGBE_RDLEN(0), "RDLEN"}, 462 {IXGBE_RDH(0), "RDH"}, 463 {IXGBE_RDT(0), "RDT"}, 464 {IXGBE_RXDCTL(0), "RXDCTL"}, 465 {IXGBE_RDBAL(0), "RDBAL"}, 466 {IXGBE_RDBAH(0), "RDBAH"}, 467 468 /* TX Registers */ 469 {IXGBE_TDBAL(0), "TDBAL"}, 470 {IXGBE_TDBAH(0), "TDBAH"}, 471 {IXGBE_TDLEN(0), "TDLEN"}, 472 {IXGBE_TDH(0), "TDH"}, 473 {IXGBE_TDT(0), "TDT"}, 474 {IXGBE_TXDCTL(0), "TXDCTL"}, 475 476 /* List Terminator */ 477 { .name = NULL } 478}; 479 480 481/* 482 * ixgbe_regdump - register printout routine 483 */ 484static void ixgbe_regdump(struct ixgbe_hw *hw, struct ixgbe_reg_info *reginfo) 485{ 486 int i; 487 char rname[16]; 488 u32 regs[64]; 489 490 switch (reginfo->ofs) { 491 case IXGBE_SRRCTL(0): 492 for (i = 0; i < 64; i++) 493 regs[i] = IXGBE_READ_REG(hw, IXGBE_SRRCTL(i)); 494 break; 495 case IXGBE_DCA_RXCTRL(0): 496 for (i = 0; i < 64; i++) 497 regs[i] = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i)); 498 break; 499 case IXGBE_RDLEN(0): 500 for (i = 0; i < 64; i++) 501 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDLEN(i)); 502 break; 503 case IXGBE_RDH(0): 504 for (i = 0; i < 64; i++) 505 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDH(i)); 506 break; 507 case IXGBE_RDT(0): 508 for (i = 0; i < 64; i++) 509 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDT(i)); 510 break; 511 case IXGBE_RXDCTL(0): 512 for (i = 0; i < 64; i++) 513 regs[i] = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i)); 514 break; 515 case IXGBE_RDBAL(0): 516 for (i = 0; i < 64; i++) 517 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAL(i)); 518 break; 519 case IXGBE_RDBAH(0): 520 for (i = 0; i < 64; i++) 521 regs[i] = IXGBE_READ_REG(hw, IXGBE_RDBAH(i)); 522 break; 523 case IXGBE_TDBAL(0): 524 for (i = 0; i < 64; i++) 525 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAL(i)); 526 break; 527 case IXGBE_TDBAH(0): 528 for (i = 0; i < 64; i++) 529 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDBAH(i)); 530 break; 531 case IXGBE_TDLEN(0): 532 for (i = 0; i < 64; i++) 533 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDLEN(i)); 534 break; 535 case IXGBE_TDH(0): 536 for (i = 0; i < 64; i++) 537 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDH(i)); 538 break; 539 case IXGBE_TDT(0): 540 for (i = 0; i < 64; i++) 541 regs[i] = IXGBE_READ_REG(hw, IXGBE_TDT(i)); 542 break; 543 case IXGBE_TXDCTL(0): 544 for (i = 0; i < 64; i++) 545 regs[i] = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i)); 546 break; 547 default: 548 pr_info("%-15s %08x\n", 549 reginfo->name, IXGBE_READ_REG(hw, reginfo->ofs)); 550 return; 551 } 552 553 i = 0; 554 while (i < 64) { 555 int j; 556 char buf[9 * 8 + 1]; 557 char *p = buf; 558 559 snprintf(rname, 16, "%s[%d-%d]", reginfo->name, i, i + 7); 560 for (j = 0; j < 8; j++) 561 p += sprintf(p, " %08x", regs[i++]); 562 pr_err("%-15s%s\n", rname, buf); 563 } 564 565} 566 567static void ixgbe_print_buffer(struct ixgbe_ring *ring, int n) 568{ 569 struct ixgbe_tx_buffer *tx_buffer; 570 571 tx_buffer = &ring->tx_buffer_info[ring->next_to_clean]; 572 pr_info(" %5d %5X %5X %016llX %08X %p %016llX\n", 573 n, ring->next_to_use, ring->next_to_clean, 574 (u64)dma_unmap_addr(tx_buffer, dma), 575 dma_unmap_len(tx_buffer, len), 576 tx_buffer->next_to_watch, 577 (u64)tx_buffer->time_stamp); 578} 579 580/* 581 * ixgbe_dump - Print registers, tx-rings and rx-rings 582 */ 583static void ixgbe_dump(struct ixgbe_adapter *adapter) 584{ 585 struct net_device *netdev = adapter->netdev; 586 struct ixgbe_hw *hw = &adapter->hw; 587 struct ixgbe_reg_info *reginfo; 588 int n = 0; 589 struct ixgbe_ring *ring; 590 struct ixgbe_tx_buffer *tx_buffer; 591 union ixgbe_adv_tx_desc *tx_desc; 592 struct my_u0 { u64 a; u64 b; } *u0; 593 struct ixgbe_ring *rx_ring; 594 union ixgbe_adv_rx_desc *rx_desc; 595 struct ixgbe_rx_buffer *rx_buffer_info; 596 int i = 0; 597 598 if (!netif_msg_hw(adapter)) 599 return; 600 601 /* Print netdevice Info */ 602 if (netdev) { 603 dev_info(&adapter->pdev->dev, "Net device Info\n"); 604 pr_info("Device Name state " 605 "trans_start\n"); 606 pr_info("%-15s %016lX %016lX\n", 607 netdev->name, 608 netdev->state, 609 dev_trans_start(netdev)); 610 } 611 612 /* Print Registers */ 613 dev_info(&adapter->pdev->dev, "Register Dump\n"); 614 pr_info(" Register Name Value\n"); 615 for (reginfo = (struct ixgbe_reg_info *)ixgbe_reg_info_tbl; 616 reginfo->name; reginfo++) { 617 ixgbe_regdump(hw, reginfo); 618 } 619 620 /* Print TX Ring Summary */ 621 if (!netdev || !netif_running(netdev)) 622 return; 623 624 dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); 625 pr_info(" %s %s %s %s\n", 626 "Queue [NTU] [NTC] [bi(ntc)->dma ]", 627 "leng", "ntw", "timestamp"); 628 for (n = 0; n < adapter->num_tx_queues; n++) { 629 ring = adapter->tx_ring[n]; 630 ixgbe_print_buffer(ring, n); 631 } 632 633 for (n = 0; n < adapter->num_xdp_queues; n++) { 634 ring = adapter->xdp_ring[n]; 635 ixgbe_print_buffer(ring, n); 636 } 637 638 /* Print TX Rings */ 639 if (!netif_msg_tx_done(adapter)) 640 goto rx_ring_summary; 641 642 dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); 643 644 /* Transmit Descriptor Formats 645 * 646 * 82598 Advanced Transmit Descriptor 647 * +--------------------------------------------------------------+ 648 * 0 | Buffer Address [63:0] | 649 * +--------------------------------------------------------------+ 650 * 8 | PAYLEN | POPTS | IDX | STA | DCMD |DTYP | RSV | DTALEN | 651 * +--------------------------------------------------------------+ 652 * 63 46 45 40 39 36 35 32 31 24 23 20 19 0 653 * 654 * 82598 Advanced Transmit Descriptor (Write-Back Format) 655 * +--------------------------------------------------------------+ 656 * 0 | RSV [63:0] | 657 * +--------------------------------------------------------------+ 658 * 8 | RSV | STA | NXTSEQ | 659 * +--------------------------------------------------------------+ 660 * 63 36 35 32 31 0 661 * 662 * 82599+ Advanced Transmit Descriptor 663 * +--------------------------------------------------------------+ 664 * 0 | Buffer Address [63:0] | 665 * +--------------------------------------------------------------+ 666 * 8 |PAYLEN |POPTS|CC|IDX |STA |DCMD |DTYP |MAC |RSV |DTALEN | 667 * +--------------------------------------------------------------+ 668 * 63 46 45 40 39 38 36 35 32 31 24 23 20 19 18 17 16 15 0 669 * 670 * 82599+ Advanced Transmit Descriptor (Write-Back Format) 671 * +--------------------------------------------------------------+ 672 * 0 | RSV [63:0] | 673 * +--------------------------------------------------------------+ 674 * 8 | RSV | STA | RSV | 675 * +--------------------------------------------------------------+ 676 * 63 36 35 32 31 0 677 */ 678 679 for (n = 0; n < adapter->num_tx_queues; n++) { 680 ring = adapter->tx_ring[n]; 681 pr_info("------------------------------------\n"); 682 pr_info("TX QUEUE INDEX = %d\n", ring->queue_index); 683 pr_info("------------------------------------\n"); 684 pr_info("%s%s %s %s %s %s\n", 685 "T [desc] [address 63:0 ] ", 686 "[PlPOIdStDDt Ln] [bi->dma ] ", 687 "leng", "ntw", "timestamp", "bi->skb"); 688 689 for (i = 0; ring->desc && (i < ring->count); i++) { 690 tx_desc = IXGBE_TX_DESC(ring, i); 691 tx_buffer = &ring->tx_buffer_info[i]; 692 u0 = (struct my_u0 *)tx_desc; 693 if (dma_unmap_len(tx_buffer, len) > 0) { 694 const char *ring_desc; 695 696 if (i == ring->next_to_use && 697 i == ring->next_to_clean) 698 ring_desc = " NTC/U"; 699 else if (i == ring->next_to_use) 700 ring_desc = " NTU"; 701 else if (i == ring->next_to_clean) 702 ring_desc = " NTC"; 703 else 704 ring_desc = ""; 705 pr_info("T [0x%03X] %016llX %016llX %016llX %08X %p %016llX %p%s", 706 i, 707 le64_to_cpu((__force __le64)u0->a), 708 le64_to_cpu((__force __le64)u0->b), 709 (u64)dma_unmap_addr(tx_buffer, dma), 710 dma_unmap_len(tx_buffer, len), 711 tx_buffer->next_to_watch, 712 (u64)tx_buffer->time_stamp, 713 tx_buffer->skb, 714 ring_desc); 715 716 if (netif_msg_pktdata(adapter) && 717 tx_buffer->skb) 718 print_hex_dump(KERN_INFO, "", 719 DUMP_PREFIX_ADDRESS, 16, 1, 720 tx_buffer->skb->data, 721 dma_unmap_len(tx_buffer, len), 722 true); 723 } 724 } 725 } 726 727 /* Print RX Rings Summary */ 728rx_ring_summary: 729 dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); 730 pr_info("Queue [NTU] [NTC]\n"); 731 for (n = 0; n < adapter->num_rx_queues; n++) { 732 rx_ring = adapter->rx_ring[n]; 733 pr_info("%5d %5X %5X\n", 734 n, rx_ring->next_to_use, rx_ring->next_to_clean); 735 } 736 737 /* Print RX Rings */ 738 if (!netif_msg_rx_status(adapter)) 739 return; 740 741 dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); 742 743 /* Receive Descriptor Formats 744 * 745 * 82598 Advanced Receive Descriptor (Read) Format 746 * 63 1 0 747 * +-----------------------------------------------------+ 748 * 0 | Packet Buffer Address [63:1] |A0/NSE| 749 * +----------------------------------------------+------+ 750 * 8 | Header Buffer Address [63:1] | DD | 751 * +-----------------------------------------------------+ 752 * 753 * 754 * 82598 Advanced Receive Descriptor (Write-Back) Format 755 * 756 * 63 48 47 32 31 30 21 20 16 15 4 3 0 757 * +------------------------------------------------------+ 758 * 0 | RSS Hash / |SPH| HDR_LEN | RSV |Packet| RSS | 759 * | Packet | IP | | | | Type | Type | 760 * | Checksum | Ident | | | | | | 761 * +------------------------------------------------------+ 762 * 8 | VLAN Tag | Length | Extended Error | Extended Status | 763 * +------------------------------------------------------+ 764 * 63 48 47 32 31 20 19 0 765 * 766 * 82599+ Advanced Receive Descriptor (Read) Format 767 * 63 1 0 768 * +-----------------------------------------------------+ 769 * 0 | Packet Buffer Address [63:1] |A0/NSE| 770 * +----------------------------------------------+------+ 771 * 8 | Header Buffer Address [63:1] | DD | 772 * +-----------------------------------------------------+ 773 * 774 * 775 * 82599+ Advanced Receive Descriptor (Write-Back) Format 776 * 777 * 63 48 47 32 31 30 21 20 17 16 4 3 0 778 * +------------------------------------------------------+ 779 * 0 |RSS / Frag Checksum|SPH| HDR_LEN |RSC- |Packet| RSS | 780 * |/ RTT / PCoE_PARAM | | | CNT | Type | Type | 781 * |/ Flow Dir Flt ID | | | | | | 782 * +------------------------------------------------------+ 783 * 8 | VLAN Tag | Length |Extended Error| Xtnd Status/NEXTP | 784 * +------------------------------------------------------+ 785 * 63 48 47 32 31 20 19 0 786 */ 787 788 for (n = 0; n < adapter->num_rx_queues; n++) { 789 rx_ring = adapter->rx_ring[n]; 790 pr_info("------------------------------------\n"); 791 pr_info("RX QUEUE INDEX = %d\n", rx_ring->queue_index); 792 pr_info("------------------------------------\n"); 793 pr_info("%s%s%s\n", 794 "R [desc] [ PktBuf A0] ", 795 "[ HeadBuf DD] [bi->dma ] [bi->skb ] ", 796 "<-- Adv Rx Read format"); 797 pr_info("%s%s%s\n", 798 "RWB[desc] [PcsmIpSHl PtRs] ", 799 "[vl er S cks ln] ---------------- [bi->skb ] ", 800 "<-- Adv Rx Write-Back format"); 801 802 for (i = 0; i < rx_ring->count; i++) { 803 const char *ring_desc; 804 805 if (i == rx_ring->next_to_use) 806 ring_desc = " NTU"; 807 else if (i == rx_ring->next_to_clean) 808 ring_desc = " NTC"; 809 else 810 ring_desc = ""; 811 812 rx_buffer_info = &rx_ring->rx_buffer_info[i]; 813 rx_desc = IXGBE_RX_DESC(rx_ring, i); 814 u0 = (struct my_u0 *)rx_desc; 815 if (rx_desc->wb.upper.length) { 816 /* Descriptor Done */ 817 pr_info("RWB[0x%03X] %016llX %016llX ---------------- %p%s\n", 818 i, 819 le64_to_cpu((__force __le64)u0->a), 820 le64_to_cpu((__force __le64)u0->b), 821 rx_buffer_info->skb, 822 ring_desc); 823 } else { 824 pr_info("R [0x%03X] %016llX %016llX %016llX %p%s\n", 825 i, 826 le64_to_cpu((__force __le64)u0->a), 827 le64_to_cpu((__force __le64)u0->b), 828 (u64)rx_buffer_info->dma, 829 rx_buffer_info->skb, 830 ring_desc); 831 832 if (netif_msg_pktdata(adapter) && 833 rx_buffer_info->dma) { 834 print_hex_dump(KERN_INFO, "", 835 DUMP_PREFIX_ADDRESS, 16, 1, 836 page_address(rx_buffer_info->page) + 837 rx_buffer_info->page_offset, 838 ixgbe_rx_bufsz(rx_ring), true); 839 } 840 } 841 } 842 } 843} 844 845static void ixgbe_release_hw_control(struct ixgbe_adapter *adapter) 846{ 847 u32 ctrl_ext; 848 849 /* Let firmware take over control of h/w */ 850 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 851 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 852 ctrl_ext & ~IXGBE_CTRL_EXT_DRV_LOAD); 853} 854 855static void ixgbe_get_hw_control(struct ixgbe_adapter *adapter) 856{ 857 u32 ctrl_ext; 858 859 /* Let firmware know the driver has taken over */ 860 ctrl_ext = IXGBE_READ_REG(&adapter->hw, IXGBE_CTRL_EXT); 861 IXGBE_WRITE_REG(&adapter->hw, IXGBE_CTRL_EXT, 862 ctrl_ext | IXGBE_CTRL_EXT_DRV_LOAD); 863} 864 865/** 866 * ixgbe_set_ivar - set the IVAR registers, mapping interrupt causes to vectors 867 * @adapter: pointer to adapter struct 868 * @direction: 0 for Rx, 1 for Tx, -1 for other causes 869 * @queue: queue to map the corresponding interrupt to 870 * @msix_vector: the vector to map to the corresponding queue 871 * 872 */ 873static void ixgbe_set_ivar(struct ixgbe_adapter *adapter, s8 direction, 874 u8 queue, u8 msix_vector) 875{ 876 u32 ivar, index; 877 struct ixgbe_hw *hw = &adapter->hw; 878 switch (hw->mac.type) { 879 case ixgbe_mac_82598EB: 880 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 881 if (direction == -1) 882 direction = 0; 883 index = (((direction * 64) + queue) >> 2) & 0x1F; 884 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(index)); 885 ivar &= ~(0xFF << (8 * (queue & 0x3))); 886 ivar |= (msix_vector << (8 * (queue & 0x3))); 887 IXGBE_WRITE_REG(hw, IXGBE_IVAR(index), ivar); 888 break; 889 case ixgbe_mac_82599EB: 890 case ixgbe_mac_X540: 891 case ixgbe_mac_X550: 892 case ixgbe_mac_X550EM_x: 893 case ixgbe_mac_x550em_a: 894 case ixgbe_mac_e610: 895 if (direction == -1) { 896 /* other causes */ 897 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 898 index = ((queue & 1) * 8); 899 ivar = IXGBE_READ_REG(&adapter->hw, IXGBE_IVAR_MISC); 900 ivar &= ~(0xFF << index); 901 ivar |= (msix_vector << index); 902 IXGBE_WRITE_REG(&adapter->hw, IXGBE_IVAR_MISC, ivar); 903 break; 904 } else { 905 /* tx or rx causes */ 906 msix_vector |= IXGBE_IVAR_ALLOC_VAL; 907 index = ((16 * (queue & 1)) + (8 * direction)); 908 ivar = IXGBE_READ_REG(hw, IXGBE_IVAR(queue >> 1)); 909 ivar &= ~(0xFF << index); 910 ivar |= (msix_vector << index); 911 IXGBE_WRITE_REG(hw, IXGBE_IVAR(queue >> 1), ivar); 912 break; 913 } 914 default: 915 break; 916 } 917} 918 919void ixgbe_irq_rearm_queues(struct ixgbe_adapter *adapter, 920 u64 qmask) 921{ 922 u32 mask; 923 924 switch (adapter->hw.mac.type) { 925 case ixgbe_mac_82598EB: 926 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 927 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS, mask); 928 break; 929 case ixgbe_mac_82599EB: 930 case ixgbe_mac_X540: 931 case ixgbe_mac_X550: 932 case ixgbe_mac_X550EM_x: 933 case ixgbe_mac_x550em_a: 934 case ixgbe_mac_e610: 935 mask = (qmask & 0xFFFFFFFF); 936 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(0), mask); 937 mask = (qmask >> 32); 938 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICS_EX(1), mask); 939 break; 940 default: 941 break; 942 } 943} 944 945static void ixgbe_update_xoff_rx_lfc(struct ixgbe_adapter *adapter) 946{ 947 struct ixgbe_hw *hw = &adapter->hw; 948 struct ixgbe_hw_stats *hwstats = &adapter->stats; 949 int i; 950 u32 data; 951 952 if ((hw->fc.current_mode != ixgbe_fc_full) && 953 (hw->fc.current_mode != ixgbe_fc_rx_pause)) 954 return; 955 956 switch (hw->mac.type) { 957 case ixgbe_mac_82598EB: 958 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXC); 959 break; 960 default: 961 data = IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT); 962 } 963 hwstats->lxoffrxc += data; 964 965 /* refill credits (no tx hang) if we received xoff */ 966 if (!data) 967 return; 968 969 for (i = 0; i < adapter->num_tx_queues; i++) 970 clear_bit(__IXGBE_HANG_CHECK_ARMED, 971 &adapter->tx_ring[i]->state); 972} 973 974static void ixgbe_update_xoff_received(struct ixgbe_adapter *adapter) 975{ 976 struct ixgbe_hw *hw = &adapter->hw; 977 struct ixgbe_hw_stats *hwstats = &adapter->stats; 978 u32 xoff[8] = {0}; 979 u8 tc; 980 int i; 981 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 982 983 if (adapter->ixgbe_ieee_pfc) 984 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 985 986 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED) || !pfc_en) { 987 ixgbe_update_xoff_rx_lfc(adapter); 988 return; 989 } 990 991 /* update stats for each tc, only valid with PFC enabled */ 992 for (i = 0; i < MAX_TX_PACKET_BUFFERS; i++) { 993 u32 pxoffrxc; 994 995 switch (hw->mac.type) { 996 case ixgbe_mac_82598EB: 997 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i)); 998 break; 999 default: 1000 pxoffrxc = IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i)); 1001 } 1002 hwstats->pxoffrxc[i] += pxoffrxc; 1003 /* Get the TC for given UP */ 1004 tc = netdev_get_prio_tc_map(adapter->netdev, i); 1005 xoff[tc] += pxoffrxc; 1006 } 1007 1008 /* disarm tx queues that have received xoff frames */ 1009 for (i = 0; i < adapter->num_tx_queues; i++) { 1010 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 1011 1012 tc = tx_ring->dcb_tc; 1013 if (xoff[tc]) 1014 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1015 } 1016 1017 for (i = 0; i < adapter->num_xdp_queues; i++) { 1018 struct ixgbe_ring *xdp_ring = adapter->xdp_ring[i]; 1019 1020 tc = xdp_ring->dcb_tc; 1021 if (xoff[tc]) 1022 clear_bit(__IXGBE_HANG_CHECK_ARMED, &xdp_ring->state); 1023 } 1024} 1025 1026static u64 ixgbe_get_tx_completed(struct ixgbe_ring *ring) 1027{ 1028 return ring->stats.packets; 1029} 1030 1031static u64 ixgbe_get_tx_pending(struct ixgbe_ring *ring) 1032{ 1033 unsigned int head, tail; 1034 1035 head = ring->next_to_clean; 1036 tail = ring->next_to_use; 1037 1038 return ((head <= tail) ? tail : tail + ring->count) - head; 1039} 1040 1041/** 1042 * ixgbe_get_vf_idx - provide VF index number based on queue index 1043 * @adapter: pointer to the adapter struct 1044 * @queue: Tx queue identifier 1045 * @vf: output VF index 1046 * 1047 * Provide VF index number associated to the input queue. 1048 * 1049 * Returns: 0 if VF provided or error number. 1050 */ 1051static int ixgbe_get_vf_idx(struct ixgbe_adapter *adapter, u16 queue, u16 *vf) 1052{ 1053 struct ixgbe_hw *hw = &adapter->hw; 1054 u8 queue_count; 1055 u32 reg; 1056 1057 if (queue >= adapter->num_tx_queues) 1058 return -EINVAL; 1059 1060 /* Determine number of queues by checking 1061 * number of virtual functions 1062 */ 1063 reg = IXGBE_READ_REG(hw, IXGBE_GCR_EXT); 1064 switch (reg & IXGBE_GCR_EXT_VT_MODE_MASK) { 1065 case IXGBE_GCR_EXT_VT_MODE_64: 1066 queue_count = IXGBE_64VFS_QUEUES; 1067 break; 1068 case IXGBE_GCR_EXT_VT_MODE_32: 1069 queue_count = IXGBE_32VFS_QUEUES; 1070 break; 1071 case IXGBE_GCR_EXT_VT_MODE_16: 1072 queue_count = IXGBE_16VFS_QUEUES; 1073 break; 1074 default: 1075 return -EINVAL; 1076 } 1077 1078 *vf = queue / queue_count; 1079 1080 return 0; 1081} 1082 1083static bool ixgbe_check_tx_hang(struct ixgbe_ring *tx_ring) 1084{ 1085 u32 tx_done = ixgbe_get_tx_completed(tx_ring); 1086 u32 tx_done_old = tx_ring->tx_stats.tx_done_old; 1087 u32 tx_pending = ixgbe_get_tx_pending(tx_ring); 1088 1089 clear_check_for_tx_hang(tx_ring); 1090 1091 /* 1092 * Check for a hung queue, but be thorough. This verifies 1093 * that a transmit has been completed since the previous 1094 * check AND there is at least one packet pending. The 1095 * ARMED bit is set to indicate a potential hang. The 1096 * bit is cleared if a pause frame is received to remove 1097 * false hang detection due to PFC or 802.3x frames. By 1098 * requiring this to fail twice we avoid races with 1099 * pfc clearing the ARMED bit and conditions where we 1100 * run the check_tx_hang logic with a transmit completion 1101 * pending but without time to complete it yet. 1102 */ 1103 if (tx_done_old == tx_done && tx_pending) 1104 /* make sure it is true for two checks in a row */ 1105 return test_and_set_bit(__IXGBE_HANG_CHECK_ARMED, 1106 &tx_ring->state); 1107 /* update completed stats and continue */ 1108 tx_ring->tx_stats.tx_done_old = tx_done; 1109 /* reset the countdown */ 1110 clear_bit(__IXGBE_HANG_CHECK_ARMED, &tx_ring->state); 1111 1112 return false; 1113} 1114 1115/** 1116 * ixgbe_tx_timeout_reset - initiate reset due to Tx timeout 1117 * @adapter: driver private struct 1118 **/ 1119static void ixgbe_tx_timeout_reset(struct ixgbe_adapter *adapter) 1120{ 1121 1122 /* Do the reset outside of interrupt context */ 1123 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 1124 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 1125 e_warn(drv, "initiating reset due to tx timeout\n"); 1126 ixgbe_service_event_schedule(adapter); 1127 } 1128} 1129 1130/** 1131 * ixgbe_tx_maxrate - callback to set the maximum per-queue bitrate 1132 * @netdev: network interface device structure 1133 * @queue_index: Tx queue to set 1134 * @maxrate: desired maximum transmit bitrate 1135 **/ 1136static int ixgbe_tx_maxrate(struct net_device *netdev, 1137 int queue_index, u32 maxrate) 1138{ 1139 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 1140 struct ixgbe_hw *hw = &adapter->hw; 1141 u32 bcnrc_val = ixgbe_link_mbps(adapter); 1142 1143 if (!maxrate) 1144 return 0; 1145 1146 /* Calculate the rate factor values to set */ 1147 bcnrc_val <<= IXGBE_RTTBCNRC_RF_INT_SHIFT; 1148 bcnrc_val /= maxrate; 1149 1150 /* clear everything but the rate factor */ 1151 bcnrc_val &= IXGBE_RTTBCNRC_RF_INT_MASK | 1152 IXGBE_RTTBCNRC_RF_DEC_MASK; 1153 1154 /* enable the rate scheduler */ 1155 bcnrc_val |= IXGBE_RTTBCNRC_RS_ENA; 1156 1157 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, queue_index); 1158 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, bcnrc_val); 1159 1160 return 0; 1161} 1162 1163/** 1164 * ixgbe_update_tx_ring_stats - Update Tx ring specific counters 1165 * @tx_ring: ring to update 1166 * @q_vector: queue vector ring belongs to 1167 * @pkts: number of processed packets 1168 * @bytes: number of processed bytes 1169 */ 1170void ixgbe_update_tx_ring_stats(struct ixgbe_ring *tx_ring, 1171 struct ixgbe_q_vector *q_vector, u64 pkts, 1172 u64 bytes) 1173{ 1174 u64_stats_update_begin(&tx_ring->syncp); 1175 tx_ring->stats.bytes += bytes; 1176 tx_ring->stats.packets += pkts; 1177 u64_stats_update_end(&tx_ring->syncp); 1178 q_vector->tx.total_bytes += bytes; 1179 q_vector->tx.total_packets += pkts; 1180} 1181 1182/** 1183 * ixgbe_update_rx_ring_stats - Update Rx ring specific counters 1184 * @rx_ring: ring to update 1185 * @q_vector: queue vector ring belongs to 1186 * @pkts: number of processed packets 1187 * @bytes: number of processed bytes 1188 */ 1189void ixgbe_update_rx_ring_stats(struct ixgbe_ring *rx_ring, 1190 struct ixgbe_q_vector *q_vector, u64 pkts, 1191 u64 bytes) 1192{ 1193 u64_stats_update_begin(&rx_ring->syncp); 1194 rx_ring->stats.bytes += bytes; 1195 rx_ring->stats.packets += pkts; 1196 u64_stats_update_end(&rx_ring->syncp); 1197 q_vector->rx.total_bytes += bytes; 1198 q_vector->rx.total_packets += pkts; 1199} 1200 1201/** 1202 * ixgbe_pf_handle_tx_hang - handle Tx hang on PF 1203 * @tx_ring: tx ring number 1204 * @next: next ring 1205 * 1206 * Prints a message containing details about the tx hang. 1207 */ 1208static void ixgbe_pf_handle_tx_hang(struct ixgbe_ring *tx_ring, 1209 unsigned int next) 1210{ 1211 struct ixgbe_adapter *adapter = netdev_priv(tx_ring->netdev); 1212 struct ixgbe_hw *hw = &adapter->hw; 1213 1214 e_err(drv, "Detected Tx Unit Hang\n" 1215 " Tx Queue <%d>\n" 1216 " TDH, TDT <%x>, <%x>\n" 1217 " next_to_use <%x>\n" 1218 " next_to_clean <%x>\n" 1219 "tx_buffer_info[next_to_clean]\n" 1220 " time_stamp <%lx>\n" 1221 " jiffies <%lx>\n", 1222 tx_ring->queue_index, 1223 IXGBE_READ_REG(hw, IXGBE_TDH(tx_ring->reg_idx)), 1224 IXGBE_READ_REG(hw, IXGBE_TDT(tx_ring->reg_idx)), 1225 tx_ring->next_to_use, next, 1226 tx_ring->tx_buffer_info[next].time_stamp, jiffies); 1227 1228 netif_stop_subqueue(tx_ring->netdev, 1229 tx_ring->queue_index); 1230} 1231 1232/** 1233 * ixgbe_vf_handle_tx_hang - handle Tx hang on VF 1234 * @adapter: structure containing ring specific data 1235 * @vf: VF index 1236 * 1237 * Print a message containing details about malicious driver detection. 1238 * Set malicious VF link down if the detection happened several times. 1239 */ 1240static void ixgbe_vf_handle_tx_hang(struct ixgbe_adapter *adapter, u16 vf) 1241{ 1242 struct ixgbe_hw *hw = &adapter->hw; 1243 1244 if (adapter->hw.mac.type != ixgbe_mac_e610) 1245 return; 1246 1247 e_warn(drv, 1248 "Malicious Driver Detection tx hang detected on PF %d VF %d MAC: %pM", 1249 hw->bus.func, vf, adapter->vfinfo[vf].vf_mac_addresses); 1250 1251 adapter->tx_hang_count[vf]++; 1252 if (adapter->tx_hang_count[vf] == IXGBE_MAX_TX_VF_HANGS) { 1253 ixgbe_set_vf_link_state(adapter, vf, 1254 IFLA_VF_LINK_STATE_DISABLE); 1255 adapter->tx_hang_count[vf] = 0; 1256 } 1257} 1258 1259static u32 ixgbe_poll_tx_icache(struct ixgbe_hw *hw, u16 queue, u16 idx) 1260{ 1261 IXGBE_WRITE_REG(hw, IXGBE_TXDESCIC, queue * idx); 1262 return IXGBE_READ_REG(hw, IXGBE_TXDESCIC); 1263} 1264 1265/** 1266 * ixgbe_check_illegal_queue - search for queue with illegal packet 1267 * @adapter: structure containing ring specific data 1268 * @queue: queue index 1269 * 1270 * Check if tx descriptor connected with input queue 1271 * contains illegal packet. 1272 * 1273 * Returns: true if queue contain illegal packet. 1274 */ 1275static bool ixgbe_check_illegal_queue(struct ixgbe_adapter *adapter, 1276 u16 queue) 1277{ 1278 u32 hdr_len_reg, mss_len_reg, type_reg; 1279 struct ixgbe_hw *hw = &adapter->hw; 1280 u32 mss_len, header_len, reg; 1281 1282 for (u16 i = 0; i < IXGBE_MAX_TX_DESCRIPTORS; i++) { 1283 /* HW will clear bit IXGBE_TXDESCIC_READY when address 1284 * is written to address field. HW will set this bit 1285 * when iCache read is done, and data is ready at TIC_DWx. 1286 * Set descriptor address. 1287 */ 1288 read_poll_timeout(ixgbe_poll_tx_icache, reg, 1289 !(reg & IXGBE_TXDESCIC_READY), 0, 0, false, 1290 hw, queue, i); 1291 1292 /* read tx descriptor access registers */ 1293 hdr_len_reg = IXGBE_READ_REG(hw, IXGBE_TIC_DW2(IXGBE_VLAN_MACIP_LENS_REG)); 1294 type_reg = IXGBE_READ_REG(hw, IXGBE_TIC_DW2(IXGBE_TYPE_TUCMD_MLHL)); 1295 mss_len_reg = IXGBE_READ_REG(hw, IXGBE_TIC_DW2(IXGBE_MSS_L4LEN_IDX)); 1296 1297 /* check if Advanced Context Descriptor */ 1298 if (FIELD_GET(IXGBE_ADVTXD_DTYP_MASK, type_reg) != 1299 IXGBE_ADVTXD_DTYP_CTXT) 1300 continue; 1301 1302 /* check for illegal MSS and Header length */ 1303 mss_len = FIELD_GET(IXGBE_ADVTXD_MSS_MASK, mss_len_reg); 1304 header_len = FIELD_GET(IXGBE_ADVTXD_HEADER_LEN_MASK, 1305 hdr_len_reg); 1306 if ((mss_len + header_len) > SZ_16K) { 1307 e_warn(probe, "mss len + header len too long\n"); 1308 return true; 1309 } 1310 } 1311 1312 return false; 1313} 1314 1315/** 1316 * ixgbe_handle_mdd_event - handle mdd event 1317 * @adapter: structure containing ring specific data 1318 * @tx_ring: tx descriptor ring to handle 1319 * 1320 * Reset VF driver if malicious vf detected or 1321 * illegal packet in an any queue detected. 1322 */ 1323static void ixgbe_handle_mdd_event(struct ixgbe_adapter *adapter, 1324 struct ixgbe_ring *tx_ring) 1325{ 1326 u16 vf, q; 1327 1328 if (adapter->vfinfo && ixgbe_check_mdd_event(adapter)) { 1329 /* vf mdd info and malicious vf detected */ 1330 if (!ixgbe_get_vf_idx(adapter, tx_ring->queue_index, &vf)) 1331 ixgbe_vf_handle_tx_hang(adapter, vf); 1332 } else { 1333 /* malicious vf not detected */ 1334 for (q = 0; q < IXGBE_MAX_TX_QUEUES; q++) { 1335 if (ixgbe_check_illegal_queue(adapter, q) && 1336 !ixgbe_get_vf_idx(adapter, q, &vf)) 1337 /* illegal queue detected */ 1338 ixgbe_vf_handle_tx_hang(adapter, vf); 1339 } 1340 } 1341} 1342 1343/** 1344 * ixgbe_clean_tx_irq - Reclaim resources after transmit completes 1345 * @q_vector: structure containing interrupt and ring information 1346 * @tx_ring: tx ring to clean 1347 * @napi_budget: Used to determine if we are in netpoll 1348 **/ 1349static bool ixgbe_clean_tx_irq(struct ixgbe_q_vector *q_vector, 1350 struct ixgbe_ring *tx_ring, int napi_budget) 1351{ 1352 struct ixgbe_adapter *adapter = q_vector->adapter; 1353 struct ixgbe_tx_buffer *tx_buffer; 1354 union ixgbe_adv_tx_desc *tx_desc; 1355 unsigned int total_bytes = 0, total_packets = 0, total_ipsec = 0; 1356 unsigned int budget = q_vector->tx.work_limit; 1357 unsigned int i = tx_ring->next_to_clean; 1358 struct netdev_queue *txq; 1359 1360 if (test_bit(__IXGBE_DOWN, &adapter->state)) 1361 return true; 1362 1363 tx_buffer = &tx_ring->tx_buffer_info[i]; 1364 tx_desc = IXGBE_TX_DESC(tx_ring, i); 1365 i -= tx_ring->count; 1366 1367 do { 1368 union ixgbe_adv_tx_desc *eop_desc = tx_buffer->next_to_watch; 1369 1370 /* if next_to_watch is not set then there is no work pending */ 1371 if (!eop_desc) 1372 break; 1373 1374 /* prevent any other reads prior to eop_desc */ 1375 smp_rmb(); 1376 1377 /* if DD is not set pending work has not been completed */ 1378 if (!(eop_desc->wb.status & cpu_to_le32(IXGBE_TXD_STAT_DD))) 1379 break; 1380 1381 /* clear next_to_watch to prevent false hangs */ 1382 tx_buffer->next_to_watch = NULL; 1383 1384 /* update the statistics for this packet */ 1385 total_bytes += tx_buffer->bytecount; 1386 total_packets += tx_buffer->gso_segs; 1387 if (tx_buffer->tx_flags & IXGBE_TX_FLAGS_IPSEC) 1388 total_ipsec++; 1389 1390 /* free the skb */ 1391 if (ring_is_xdp(tx_ring)) 1392 xdp_return_frame(tx_buffer->xdpf); 1393 else 1394 napi_consume_skb(tx_buffer->skb, napi_budget); 1395 1396 /* unmap skb header data */ 1397 dma_unmap_single(tx_ring->dev, 1398 dma_unmap_addr(tx_buffer, dma), 1399 dma_unmap_len(tx_buffer, len), 1400 DMA_TO_DEVICE); 1401 1402 /* clear tx_buffer data */ 1403 dma_unmap_len_set(tx_buffer, len, 0); 1404 1405 /* unmap remaining buffers */ 1406 while (tx_desc != eop_desc) { 1407 tx_buffer++; 1408 tx_desc++; 1409 i++; 1410 if (unlikely(!i)) { 1411 i -= tx_ring->count; 1412 tx_buffer = tx_ring->tx_buffer_info; 1413 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1414 } 1415 1416 /* unmap any remaining paged data */ 1417 if (dma_unmap_len(tx_buffer, len)) { 1418 dma_unmap_page(tx_ring->dev, 1419 dma_unmap_addr(tx_buffer, dma), 1420 dma_unmap_len(tx_buffer, len), 1421 DMA_TO_DEVICE); 1422 dma_unmap_len_set(tx_buffer, len, 0); 1423 } 1424 } 1425 1426 /* move us one more past the eop_desc for start of next pkt */ 1427 tx_buffer++; 1428 tx_desc++; 1429 i++; 1430 if (unlikely(!i)) { 1431 i -= tx_ring->count; 1432 tx_buffer = tx_ring->tx_buffer_info; 1433 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 1434 } 1435 1436 /* issue prefetch for next Tx descriptor */ 1437 prefetch(tx_desc); 1438 1439 /* update budget accounting */ 1440 budget--; 1441 } while (likely(budget)); 1442 1443 i += tx_ring->count; 1444 tx_ring->next_to_clean = i; 1445 ixgbe_update_tx_ring_stats(tx_ring, q_vector, total_packets, 1446 total_bytes); 1447 adapter->tx_ipsec += total_ipsec; 1448 1449 if (ring_is_xdp(tx_ring)) 1450 return !!budget; 1451 1452 if (check_for_tx_hang(tx_ring) && ixgbe_check_tx_hang(tx_ring)) { 1453 if (adapter->hw.mac.type == ixgbe_mac_e610) 1454 ixgbe_handle_mdd_event(adapter, tx_ring); 1455 1456 ixgbe_pf_handle_tx_hang(tx_ring, i); 1457 1458 e_info(probe, 1459 "tx hang %d detected on queue %d, resetting adapter\n", 1460 adapter->tx_timeout_count + 1, tx_ring->queue_index); 1461 1462 /* schedule immediate reset if we believe we hung */ 1463 ixgbe_tx_timeout_reset(adapter); 1464 1465 /* the adapter is about to reset, no point in enabling stuff */ 1466 return true; 1467 } 1468 1469#define TX_WAKE_THRESHOLD (DESC_NEEDED * 2) 1470 txq = netdev_get_tx_queue(tx_ring->netdev, tx_ring->queue_index); 1471 if (!__netif_txq_completed_wake(txq, total_packets, total_bytes, 1472 ixgbe_desc_unused(tx_ring), 1473 TX_WAKE_THRESHOLD, 1474 !netif_carrier_ok(tx_ring->netdev) || 1475 test_bit(__IXGBE_DOWN, &adapter->state))) 1476 ++tx_ring->tx_stats.restart_queue; 1477 1478 return !!budget; 1479} 1480 1481#ifdef CONFIG_IXGBE_DCA 1482static void ixgbe_update_tx_dca(struct ixgbe_adapter *adapter, 1483 struct ixgbe_ring *tx_ring, 1484 int cpu) 1485{ 1486 struct ixgbe_hw *hw = &adapter->hw; 1487 u32 txctrl = 0; 1488 u16 reg_offset; 1489 1490 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1491 txctrl = dca3_get_tag(tx_ring->dev, cpu); 1492 1493 switch (hw->mac.type) { 1494 case ixgbe_mac_82598EB: 1495 reg_offset = IXGBE_DCA_TXCTRL(tx_ring->reg_idx); 1496 break; 1497 case ixgbe_mac_82599EB: 1498 case ixgbe_mac_X540: 1499 reg_offset = IXGBE_DCA_TXCTRL_82599(tx_ring->reg_idx); 1500 txctrl <<= IXGBE_DCA_TXCTRL_CPUID_SHIFT_82599; 1501 break; 1502 default: 1503 /* for unknown hardware do not write register */ 1504 return; 1505 } 1506 1507 /* 1508 * We can enable relaxed ordering for reads, but not writes when 1509 * DCA is enabled. This is due to a known issue in some chipsets 1510 * which will cause the DCA tag to be cleared. 1511 */ 1512 txctrl |= IXGBE_DCA_TXCTRL_DESC_RRO_EN | 1513 IXGBE_DCA_TXCTRL_DATA_RRO_EN | 1514 IXGBE_DCA_TXCTRL_DESC_DCA_EN; 1515 1516 IXGBE_WRITE_REG(hw, reg_offset, txctrl); 1517} 1518 1519static void ixgbe_update_rx_dca(struct ixgbe_adapter *adapter, 1520 struct ixgbe_ring *rx_ring, 1521 int cpu) 1522{ 1523 struct ixgbe_hw *hw = &adapter->hw; 1524 u32 rxctrl = 0; 1525 u8 reg_idx = rx_ring->reg_idx; 1526 1527 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1528 rxctrl = dca3_get_tag(rx_ring->dev, cpu); 1529 1530 switch (hw->mac.type) { 1531 case ixgbe_mac_82599EB: 1532 case ixgbe_mac_X540: 1533 rxctrl <<= IXGBE_DCA_RXCTRL_CPUID_SHIFT_82599; 1534 break; 1535 default: 1536 break; 1537 } 1538 1539 /* 1540 * We can enable relaxed ordering for reads, but not writes when 1541 * DCA is enabled. This is due to a known issue in some chipsets 1542 * which will cause the DCA tag to be cleared. 1543 */ 1544 rxctrl |= IXGBE_DCA_RXCTRL_DESC_RRO_EN | 1545 IXGBE_DCA_RXCTRL_DATA_DCA_EN | 1546 IXGBE_DCA_RXCTRL_DESC_DCA_EN; 1547 1548 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(reg_idx), rxctrl); 1549} 1550 1551static void ixgbe_update_dca(struct ixgbe_q_vector *q_vector) 1552{ 1553 struct ixgbe_adapter *adapter = q_vector->adapter; 1554 struct ixgbe_ring *ring; 1555 int cpu = get_cpu(); 1556 1557 if (q_vector->cpu == cpu) 1558 goto out_no_update; 1559 1560 ixgbe_for_each_ring(ring, q_vector->tx) 1561 ixgbe_update_tx_dca(adapter, ring, cpu); 1562 1563 ixgbe_for_each_ring(ring, q_vector->rx) 1564 ixgbe_update_rx_dca(adapter, ring, cpu); 1565 1566 q_vector->cpu = cpu; 1567out_no_update: 1568 put_cpu(); 1569} 1570 1571static void ixgbe_setup_dca(struct ixgbe_adapter *adapter) 1572{ 1573 int i; 1574 1575 /* always use CB2 mode, difference is masked in the CB driver */ 1576 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1577 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1578 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1579 else 1580 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1581 IXGBE_DCA_CTRL_DCA_DISABLE); 1582 1583 for (i = 0; i < adapter->num_q_vectors; i++) { 1584 adapter->q_vector[i]->cpu = -1; 1585 ixgbe_update_dca(adapter->q_vector[i]); 1586 } 1587} 1588 1589static int __ixgbe_notify_dca(struct device *dev, void *data) 1590{ 1591 struct ixgbe_adapter *adapter = dev_get_drvdata(dev); 1592 unsigned long event = *(unsigned long *)data; 1593 1594 if (!(adapter->flags & IXGBE_FLAG_DCA_CAPABLE)) 1595 return 0; 1596 1597 switch (event) { 1598 case DCA_PROVIDER_ADD: 1599 /* if we're already enabled, don't do it again */ 1600 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 1601 break; 1602 if (dca_add_requester(dev) == 0) { 1603 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 1604 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1605 IXGBE_DCA_CTRL_DCA_MODE_CB2); 1606 break; 1607 } 1608 fallthrough; /* DCA is disabled. */ 1609 case DCA_PROVIDER_REMOVE: 1610 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 1611 dca_remove_requester(dev); 1612 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 1613 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 1614 IXGBE_DCA_CTRL_DCA_DISABLE); 1615 } 1616 break; 1617 } 1618 1619 return 0; 1620} 1621 1622#endif /* CONFIG_IXGBE_DCA */ 1623 1624#define IXGBE_RSS_L4_TYPES_MASK \ 1625 ((1ul << IXGBE_RXDADV_RSSTYPE_IPV4_TCP) | \ 1626 (1ul << IXGBE_RXDADV_RSSTYPE_IPV4_UDP) | \ 1627 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_TCP) | \ 1628 (1ul << IXGBE_RXDADV_RSSTYPE_IPV6_UDP)) 1629 1630static inline void ixgbe_rx_hash(struct ixgbe_ring *ring, 1631 union ixgbe_adv_rx_desc *rx_desc, 1632 struct sk_buff *skb) 1633{ 1634 u16 rss_type; 1635 1636 if (!(ring->netdev->features & NETIF_F_RXHASH)) 1637 return; 1638 1639 rss_type = le16_to_cpu(rx_desc->wb.lower.lo_dword.hs_rss.pkt_info) & 1640 IXGBE_RXDADV_RSSTYPE_MASK; 1641 1642 if (!rss_type) 1643 return; 1644 1645 skb_set_hash(skb, le32_to_cpu(rx_desc->wb.lower.hi_dword.rss), 1646 (IXGBE_RSS_L4_TYPES_MASK & (1ul << rss_type)) ? 1647 PKT_HASH_TYPE_L4 : PKT_HASH_TYPE_L3); 1648} 1649 1650#ifdef IXGBE_FCOE 1651/** 1652 * ixgbe_rx_is_fcoe - check the rx desc for incoming pkt type 1653 * @ring: structure containing ring specific data 1654 * @rx_desc: advanced rx descriptor 1655 * 1656 * Returns : true if it is FCoE pkt 1657 */ 1658static inline bool ixgbe_rx_is_fcoe(struct ixgbe_ring *ring, 1659 union ixgbe_adv_rx_desc *rx_desc) 1660{ 1661 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1662 1663 return test_bit(__IXGBE_RX_FCOE, &ring->state) && 1664 ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_ETQF_MASK)) == 1665 (cpu_to_le16(IXGBE_ETQF_FILTER_FCOE << 1666 IXGBE_RXDADV_PKTTYPE_ETQF_SHIFT))); 1667} 1668 1669#endif /* IXGBE_FCOE */ 1670/** 1671 * ixgbe_rx_checksum - indicate in skb if hw indicated a good cksum 1672 * @ring: structure containing ring specific data 1673 * @rx_desc: current Rx descriptor being processed 1674 * @skb: skb currently being received and modified 1675 **/ 1676static inline void ixgbe_rx_checksum(struct ixgbe_ring *ring, 1677 union ixgbe_adv_rx_desc *rx_desc, 1678 struct sk_buff *skb) 1679{ 1680 __le16 pkt_info = rx_desc->wb.lower.lo_dword.hs_rss.pkt_info; 1681 bool encap_pkt = false; 1682 1683 skb_checksum_none_assert(skb); 1684 1685 /* Rx csum disabled */ 1686 if (!(ring->netdev->features & NETIF_F_RXCSUM)) 1687 return; 1688 1689 /* check for VXLAN and Geneve packets */ 1690 if (pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_VXLAN)) { 1691 encap_pkt = true; 1692 skb->encapsulation = 1; 1693 } 1694 1695 /* if IP and error */ 1696 if (ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_IPCS) && 1697 ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_IPE)) { 1698 ring->rx_stats.csum_err++; 1699 return; 1700 } 1701 1702 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_L4CS)) 1703 return; 1704 1705 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_TCPE)) { 1706 /* 1707 * 82599 errata, UDP frames with a 0 checksum can be marked as 1708 * checksum errors. 1709 */ 1710 if ((pkt_info & cpu_to_le16(IXGBE_RXDADV_PKTTYPE_UDP)) && 1711 test_bit(__IXGBE_RX_CSUM_UDP_ZERO_ERR, &ring->state)) 1712 return; 1713 1714 ring->rx_stats.csum_err++; 1715 return; 1716 } 1717 1718 /* It must be a TCP or UDP packet with a valid checksum */ 1719 skb->ip_summed = CHECKSUM_UNNECESSARY; 1720 if (encap_pkt) { 1721 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_OUTERIPCS)) 1722 return; 1723 1724 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_ERR_OUTERIPER)) { 1725 skb->ip_summed = CHECKSUM_NONE; 1726 return; 1727 } 1728 /* If we checked the outer header let the stack know */ 1729 skb->csum_level = 1; 1730 } 1731} 1732 1733static unsigned int ixgbe_rx_offset(struct ixgbe_ring *rx_ring) 1734{ 1735 return ring_uses_build_skb(rx_ring) ? IXGBE_SKB_PAD : 0; 1736} 1737 1738static bool ixgbe_alloc_mapped_page(struct ixgbe_ring *rx_ring, 1739 struct ixgbe_rx_buffer *bi) 1740{ 1741 struct page *page = bi->page; 1742 dma_addr_t dma; 1743 1744 /* since we are recycling buffers we should seldom need to alloc */ 1745 if (likely(page)) 1746 return true; 1747 1748 /* alloc new page for storage */ 1749 page = dev_alloc_pages(ixgbe_rx_pg_order(rx_ring)); 1750 if (unlikely(!page)) { 1751 rx_ring->rx_stats.alloc_rx_page_failed++; 1752 return false; 1753 } 1754 1755 /* map page for use */ 1756 dma = dma_map_page_attrs(rx_ring->dev, page, 0, 1757 ixgbe_rx_pg_size(rx_ring), 1758 DMA_FROM_DEVICE, 1759 IXGBE_RX_DMA_ATTR); 1760 1761 /* 1762 * if mapping failed free memory back to system since 1763 * there isn't much point in holding memory we can't use 1764 */ 1765 if (dma_mapping_error(rx_ring->dev, dma)) { 1766 __free_pages(page, ixgbe_rx_pg_order(rx_ring)); 1767 1768 rx_ring->rx_stats.alloc_rx_page_failed++; 1769 return false; 1770 } 1771 1772 bi->dma = dma; 1773 bi->page = page; 1774 bi->page_offset = rx_ring->rx_offset; 1775 page_ref_add(page, USHRT_MAX - 1); 1776 bi->pagecnt_bias = USHRT_MAX; 1777 rx_ring->rx_stats.alloc_rx_page++; 1778 1779 return true; 1780} 1781 1782/** 1783 * ixgbe_alloc_rx_buffers - Replace used receive buffers 1784 * @rx_ring: ring to place buffers on 1785 * @cleaned_count: number of buffers to replace 1786 **/ 1787void ixgbe_alloc_rx_buffers(struct ixgbe_ring *rx_ring, u16 cleaned_count) 1788{ 1789 union ixgbe_adv_rx_desc *rx_desc; 1790 struct ixgbe_rx_buffer *bi; 1791 u16 i = rx_ring->next_to_use; 1792 u16 bufsz; 1793 1794 /* nothing to do */ 1795 if (!cleaned_count) 1796 return; 1797 1798 rx_desc = IXGBE_RX_DESC(rx_ring, i); 1799 bi = &rx_ring->rx_buffer_info[i]; 1800 i -= rx_ring->count; 1801 1802 bufsz = ixgbe_rx_bufsz(rx_ring); 1803 1804 do { 1805 if (!ixgbe_alloc_mapped_page(rx_ring, bi)) 1806 break; 1807 1808 /* sync the buffer for use by the device */ 1809 dma_sync_single_range_for_device(rx_ring->dev, bi->dma, 1810 bi->page_offset, bufsz, 1811 DMA_FROM_DEVICE); 1812 1813 /* 1814 * Refresh the desc even if buffer_addrs didn't change 1815 * because each write-back erases this info. 1816 */ 1817 rx_desc->read.pkt_addr = cpu_to_le64(bi->dma + bi->page_offset); 1818 1819 rx_desc++; 1820 bi++; 1821 i++; 1822 if (unlikely(!i)) { 1823 rx_desc = IXGBE_RX_DESC(rx_ring, 0); 1824 bi = rx_ring->rx_buffer_info; 1825 i -= rx_ring->count; 1826 } 1827 1828 /* clear the length for the next_to_use descriptor */ 1829 rx_desc->wb.upper.length = 0; 1830 1831 cleaned_count--; 1832 } while (cleaned_count); 1833 1834 i += rx_ring->count; 1835 1836 if (rx_ring->next_to_use != i) { 1837 rx_ring->next_to_use = i; 1838 1839 /* update next to alloc since we have filled the ring */ 1840 rx_ring->next_to_alloc = i; 1841 1842 /* Force memory writes to complete before letting h/w 1843 * know there are new descriptors to fetch. (Only 1844 * applicable for weak-ordered memory model archs, 1845 * such as IA-64). 1846 */ 1847 wmb(); 1848 writel(i, rx_ring->tail); 1849 } 1850} 1851 1852static void ixgbe_set_rsc_gso_size(struct ixgbe_ring *ring, 1853 struct sk_buff *skb) 1854{ 1855 u16 hdr_len = skb_headlen(skb); 1856 1857 /* set gso_size to avoid messing up TCP MSS */ 1858 skb_shinfo(skb)->gso_size = DIV_ROUND_UP((skb->len - hdr_len), 1859 IXGBE_CB(skb)->append_cnt); 1860 skb_shinfo(skb)->gso_type = SKB_GSO_TCPV4; 1861} 1862 1863static void ixgbe_update_rsc_stats(struct ixgbe_ring *rx_ring, 1864 struct sk_buff *skb) 1865{ 1866 /* if append_cnt is 0 then frame is not RSC */ 1867 if (!IXGBE_CB(skb)->append_cnt) 1868 return; 1869 1870 rx_ring->rx_stats.rsc_count += IXGBE_CB(skb)->append_cnt; 1871 rx_ring->rx_stats.rsc_flush++; 1872 1873 ixgbe_set_rsc_gso_size(rx_ring, skb); 1874 1875 /* gso_size is computed using append_cnt so always clear it last */ 1876 IXGBE_CB(skb)->append_cnt = 0; 1877} 1878 1879/** 1880 * ixgbe_process_skb_fields - Populate skb header fields from Rx descriptor 1881 * @rx_ring: rx descriptor ring packet is being transacted on 1882 * @rx_desc: pointer to the EOP Rx descriptor 1883 * @skb: pointer to current skb being populated 1884 * 1885 * This function checks the ring, descriptor, and packet information in 1886 * order to populate the hash, checksum, VLAN, timestamp, protocol, and 1887 * other fields within the skb. 1888 **/ 1889void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring, 1890 union ixgbe_adv_rx_desc *rx_desc, 1891 struct sk_buff *skb) 1892{ 1893 struct net_device *dev = rx_ring->netdev; 1894 u32 flags = rx_ring->q_vector->adapter->flags; 1895 1896 ixgbe_update_rsc_stats(rx_ring, skb); 1897 1898 ixgbe_rx_hash(rx_ring, rx_desc, skb); 1899 1900 ixgbe_rx_checksum(rx_ring, rx_desc, skb); 1901 1902 if (unlikely(flags & IXGBE_FLAG_RX_HWTSTAMP_ENABLED)) 1903 ixgbe_ptp_rx_hwtstamp(rx_ring, rx_desc, skb); 1904 1905 if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) && 1906 ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) { 1907 u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan); 1908 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); 1909 } 1910 1911 if (ixgbe_test_staterr(rx_desc, IXGBE_RXDADV_STAT_SECP)) 1912 ixgbe_ipsec_rx(rx_ring, rx_desc, skb); 1913 1914 /* record Rx queue, or update MACVLAN statistics */ 1915 if (netif_is_ixgbe(dev)) 1916 skb_record_rx_queue(skb, rx_ring->queue_index); 1917 else 1918 macvlan_count_rx(netdev_priv(dev), skb->len + ETH_HLEN, true, 1919 false); 1920 1921 skb->protocol = eth_type_trans(skb, dev); 1922} 1923 1924void ixgbe_rx_skb(struct ixgbe_q_vector *q_vector, 1925 struct sk_buff *skb) 1926{ 1927 napi_gro_receive(&q_vector->napi, skb); 1928} 1929 1930/** 1931 * ixgbe_is_non_eop - process handling of non-EOP buffers 1932 * @rx_ring: Rx ring being processed 1933 * @rx_desc: Rx descriptor for current buffer 1934 * @skb: Current socket buffer containing buffer in progress 1935 * 1936 * This function updates next to clean. If the buffer is an EOP buffer 1937 * this function exits returning false, otherwise it will place the 1938 * sk_buff in the next buffer to be chained and return true indicating 1939 * that this is in fact a non-EOP buffer. 1940 **/ 1941static bool ixgbe_is_non_eop(struct ixgbe_ring *rx_ring, 1942 union ixgbe_adv_rx_desc *rx_desc, 1943 struct sk_buff *skb) 1944{ 1945 u32 ntc = rx_ring->next_to_clean + 1; 1946 1947 /* fetch, update, and store next to clean */ 1948 ntc = (ntc < rx_ring->count) ? ntc : 0; 1949 rx_ring->next_to_clean = ntc; 1950 1951 prefetch(IXGBE_RX_DESC(rx_ring, ntc)); 1952 1953 /* update RSC append count if present */ 1954 if (ring_is_rsc_enabled(rx_ring)) { 1955 __le32 rsc_enabled = rx_desc->wb.lower.lo_dword.data & 1956 cpu_to_le32(IXGBE_RXDADV_RSCCNT_MASK); 1957 1958 if (unlikely(rsc_enabled)) { 1959 u32 rsc_cnt = le32_to_cpu(rsc_enabled); 1960 1961 rsc_cnt >>= IXGBE_RXDADV_RSCCNT_SHIFT; 1962 IXGBE_CB(skb)->append_cnt += rsc_cnt - 1; 1963 1964 /* update ntc based on RSC value */ 1965 ntc = le32_to_cpu(rx_desc->wb.upper.status_error); 1966 ntc &= IXGBE_RXDADV_NEXTP_MASK; 1967 ntc >>= IXGBE_RXDADV_NEXTP_SHIFT; 1968 } 1969 } 1970 1971 /* if we are the last buffer then there is nothing else to do */ 1972 if (likely(ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP))) 1973 return false; 1974 1975 /* place skb in next buffer to be received */ 1976 rx_ring->rx_buffer_info[ntc].skb = skb; 1977 rx_ring->rx_stats.non_eop_descs++; 1978 1979 return true; 1980} 1981 1982/** 1983 * ixgbe_pull_tail - ixgbe specific version of skb_pull_tail 1984 * @rx_ring: rx descriptor ring packet is being transacted on 1985 * @skb: pointer to current skb being adjusted 1986 * 1987 * This function is an ixgbe specific version of __pskb_pull_tail. The 1988 * main difference between this version and the original function is that 1989 * this function can make several assumptions about the state of things 1990 * that allow for significant optimizations versus the standard function. 1991 * As a result we can do things like drop a frag and maintain an accurate 1992 * truesize for the skb. 1993 */ 1994static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring, 1995 struct sk_buff *skb) 1996{ 1997 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 1998 unsigned char *va; 1999 unsigned int pull_len; 2000 2001 /* 2002 * it is valid to use page_address instead of kmap since we are 2003 * working with pages allocated out of the lomem pool per 2004 * alloc_page(GFP_ATOMIC) 2005 */ 2006 va = skb_frag_address(frag); 2007 2008 /* 2009 * we need the header to contain the greater of either ETH_HLEN or 2010 * 60 bytes if the skb->len is less than 60 for skb_pad. 2011 */ 2012 pull_len = eth_get_headlen(skb->dev, va, IXGBE_RX_HDR_SIZE); 2013 2014 /* align pull length to size of long to optimize memcpy performance */ 2015 skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long))); 2016 2017 /* update all of the pointers */ 2018 skb_frag_size_sub(frag, pull_len); 2019 skb_frag_off_add(frag, pull_len); 2020 skb->data_len -= pull_len; 2021 skb->tail += pull_len; 2022} 2023 2024/** 2025 * ixgbe_dma_sync_frag - perform DMA sync for first frag of SKB 2026 * @rx_ring: rx descriptor ring packet is being transacted on 2027 * @skb: pointer to current skb being updated 2028 * 2029 * This function provides a basic DMA sync up for the first fragment of an 2030 * skb. The reason for doing this is that the first fragment cannot be 2031 * unmapped until we have reached the end of packet descriptor for a buffer 2032 * chain. 2033 */ 2034static void ixgbe_dma_sync_frag(struct ixgbe_ring *rx_ring, 2035 struct sk_buff *skb) 2036{ 2037 if (ring_uses_build_skb(rx_ring)) { 2038 unsigned long mask = (unsigned long)ixgbe_rx_pg_size(rx_ring) - 1; 2039 unsigned long offset = (unsigned long)(skb->data) & mask; 2040 2041 dma_sync_single_range_for_cpu(rx_ring->dev, 2042 IXGBE_CB(skb)->dma, 2043 offset, 2044 skb_headlen(skb), 2045 DMA_FROM_DEVICE); 2046 } else { 2047 skb_frag_t *frag = &skb_shinfo(skb)->frags[0]; 2048 2049 dma_sync_single_range_for_cpu(rx_ring->dev, 2050 IXGBE_CB(skb)->dma, 2051 skb_frag_off(frag), 2052 skb_frag_size(frag), 2053 DMA_FROM_DEVICE); 2054 } 2055 2056 /* If the page was released, just unmap it. */ 2057 if (unlikely(IXGBE_CB(skb)->page_released)) { 2058 dma_unmap_page_attrs(rx_ring->dev, IXGBE_CB(skb)->dma, 2059 ixgbe_rx_pg_size(rx_ring), 2060 DMA_FROM_DEVICE, 2061 IXGBE_RX_DMA_ATTR); 2062 } 2063} 2064 2065/** 2066 * ixgbe_cleanup_headers - Correct corrupted or empty headers 2067 * @rx_ring: rx descriptor ring packet is being transacted on 2068 * @rx_desc: pointer to the EOP Rx descriptor 2069 * @skb: pointer to current skb being fixed 2070 * 2071 * Check if the skb is valid in the XDP case it will be an error pointer. 2072 * Return true in this case to abort processing and advance to next 2073 * descriptor. 2074 * 2075 * Check for corrupted packet headers caused by senders on the local L2 2076 * embedded NIC switch not setting up their Tx Descriptors right. These 2077 * should be very rare. 2078 * 2079 * Also address the case where we are pulling data in on pages only 2080 * and as such no data is present in the skb header. 2081 * 2082 * In addition if skb is not at least 60 bytes we need to pad it so that 2083 * it is large enough to qualify as a valid Ethernet frame. 2084 * 2085 * Returns true if an error was encountered and skb was freed. 2086 **/ 2087bool ixgbe_cleanup_headers(struct ixgbe_ring *rx_ring, 2088 union ixgbe_adv_rx_desc *rx_desc, 2089 struct sk_buff *skb) 2090{ 2091 struct net_device *netdev = rx_ring->netdev; 2092 2093 /* Verify netdev is present, and that packet does not have any 2094 * errors that would be unacceptable to the netdev. 2095 */ 2096 if (!netdev || 2097 (unlikely(ixgbe_test_staterr(rx_desc, 2098 IXGBE_RXDADV_ERR_FRAME_ERR_MASK) && 2099 !(netdev->features & NETIF_F_RXALL)))) { 2100 dev_kfree_skb_any(skb); 2101 return true; 2102 } 2103 2104 /* place header in linear portion of buffer */ 2105 if (!skb_headlen(skb)) 2106 ixgbe_pull_tail(rx_ring, skb); 2107 2108#ifdef IXGBE_FCOE 2109 /* do not attempt to pad FCoE Frames as this will disrupt DDP */ 2110 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) 2111 return false; 2112 2113#endif 2114 /* if eth_skb_pad returns an error the skb was freed */ 2115 if (eth_skb_pad(skb)) 2116 return true; 2117 2118 return false; 2119} 2120 2121/** 2122 * ixgbe_reuse_rx_page - page flip buffer and store it back on the ring 2123 * @rx_ring: rx descriptor ring to store buffers on 2124 * @old_buff: donor buffer to have page reused 2125 * 2126 * Synchronizes page for reuse by the adapter 2127 **/ 2128static void ixgbe_reuse_rx_page(struct ixgbe_ring *rx_ring, 2129 struct ixgbe_rx_buffer *old_buff) 2130{ 2131 struct ixgbe_rx_buffer *new_buff; 2132 u16 nta = rx_ring->next_to_alloc; 2133 2134 new_buff = &rx_ring->rx_buffer_info[nta]; 2135 2136 /* update, and store next to alloc */ 2137 nta++; 2138 rx_ring->next_to_alloc = (nta < rx_ring->count) ? nta : 0; 2139 2140 /* Transfer page from old buffer to new buffer. 2141 * Move each member individually to avoid possible store 2142 * forwarding stalls and unnecessary copy of skb. 2143 */ 2144 new_buff->dma = old_buff->dma; 2145 new_buff->page = old_buff->page; 2146 new_buff->page_offset = old_buff->page_offset; 2147 new_buff->pagecnt_bias = old_buff->pagecnt_bias; 2148} 2149 2150static bool ixgbe_can_reuse_rx_page(struct ixgbe_rx_buffer *rx_buffer, 2151 int rx_buffer_pgcnt) 2152{ 2153 unsigned int pagecnt_bias = rx_buffer->pagecnt_bias; 2154 struct page *page = rx_buffer->page; 2155 2156 /* avoid re-using remote and pfmemalloc pages */ 2157 if (!dev_page_is_reusable(page)) 2158 return false; 2159 2160#if (PAGE_SIZE < 8192) 2161 /* if we are only owner of page we can reuse it */ 2162 if (unlikely((rx_buffer_pgcnt - pagecnt_bias) > 1)) 2163 return false; 2164#else 2165 /* The last offset is a bit aggressive in that we assume the 2166 * worst case of FCoE being enabled and using a 3K buffer. 2167 * However this should have minimal impact as the 1K extra is 2168 * still less than one buffer in size. 2169 */ 2170#define IXGBE_LAST_OFFSET \ 2171 (SKB_WITH_OVERHEAD(PAGE_SIZE) - IXGBE_RXBUFFER_3K) 2172 if (rx_buffer->page_offset > IXGBE_LAST_OFFSET) 2173 return false; 2174#endif 2175 2176 /* If we have drained the page fragment pool we need to update 2177 * the pagecnt_bias and page count so that we fully restock the 2178 * number of references the driver holds. 2179 */ 2180 if (unlikely(pagecnt_bias == 1)) { 2181 page_ref_add(page, USHRT_MAX - 1); 2182 rx_buffer->pagecnt_bias = USHRT_MAX; 2183 } 2184 2185 return true; 2186} 2187 2188/** 2189 * ixgbe_add_rx_frag - Add contents of Rx buffer to sk_buff 2190 * @rx_ring: rx descriptor ring to transact packets on 2191 * @rx_buffer: buffer containing page to add 2192 * @skb: sk_buff to place the data into 2193 * @size: size of data in rx_buffer 2194 * 2195 * This function will add the data contained in rx_buffer->page to the skb. 2196 * This is done either through a direct copy if the data in the buffer is 2197 * less than the skb header size, otherwise it will just attach the page as 2198 * a frag to the skb. 2199 * 2200 * The function will then update the page offset if necessary and return 2201 * true if the buffer can be reused by the adapter. 2202 **/ 2203static void ixgbe_add_rx_frag(struct ixgbe_ring *rx_ring, 2204 struct ixgbe_rx_buffer *rx_buffer, 2205 struct sk_buff *skb, 2206 unsigned int size) 2207{ 2208#if (PAGE_SIZE < 8192) 2209 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2210#else 2211 unsigned int truesize = rx_ring->rx_offset ? 2212 SKB_DATA_ALIGN(rx_ring->rx_offset + size) : 2213 SKB_DATA_ALIGN(size); 2214#endif 2215 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags, rx_buffer->page, 2216 rx_buffer->page_offset, size, truesize); 2217#if (PAGE_SIZE < 8192) 2218 rx_buffer->page_offset ^= truesize; 2219#else 2220 rx_buffer->page_offset += truesize; 2221#endif 2222} 2223 2224static struct ixgbe_rx_buffer *ixgbe_get_rx_buffer(struct ixgbe_ring *rx_ring, 2225 union ixgbe_adv_rx_desc *rx_desc, 2226 struct sk_buff **skb, 2227 const unsigned int size, 2228 int *rx_buffer_pgcnt) 2229{ 2230 struct ixgbe_rx_buffer *rx_buffer; 2231 2232 rx_buffer = &rx_ring->rx_buffer_info[rx_ring->next_to_clean]; 2233 *rx_buffer_pgcnt = 2234#if (PAGE_SIZE < 8192) 2235 page_count(rx_buffer->page); 2236#else 2237 0; 2238#endif 2239 prefetchw(rx_buffer->page); 2240 *skb = rx_buffer->skb; 2241 2242 /* Delay unmapping of the first packet. It carries the header 2243 * information, HW may still access the header after the writeback. 2244 * Only unmap it when EOP is reached 2245 */ 2246 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) { 2247 if (!*skb) 2248 goto skip_sync; 2249 } else { 2250 if (*skb) 2251 ixgbe_dma_sync_frag(rx_ring, *skb); 2252 } 2253 2254 /* we are reusing so sync this buffer for CPU use */ 2255 dma_sync_single_range_for_cpu(rx_ring->dev, 2256 rx_buffer->dma, 2257 rx_buffer->page_offset, 2258 size, 2259 DMA_FROM_DEVICE); 2260skip_sync: 2261 rx_buffer->pagecnt_bias--; 2262 2263 return rx_buffer; 2264} 2265 2266static void ixgbe_put_rx_buffer(struct ixgbe_ring *rx_ring, 2267 struct ixgbe_rx_buffer *rx_buffer, 2268 struct sk_buff *skb, 2269 int rx_buffer_pgcnt) 2270{ 2271 if (ixgbe_can_reuse_rx_page(rx_buffer, rx_buffer_pgcnt)) { 2272 /* hand second half of page back to the ring */ 2273 ixgbe_reuse_rx_page(rx_ring, rx_buffer); 2274 } else { 2275 if (skb && IXGBE_CB(skb)->dma == rx_buffer->dma) { 2276 /* the page has been released from the ring */ 2277 IXGBE_CB(skb)->page_released = true; 2278 } else { 2279 /* we are not reusing the buffer so unmap it */ 2280 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 2281 ixgbe_rx_pg_size(rx_ring), 2282 DMA_FROM_DEVICE, 2283 IXGBE_RX_DMA_ATTR); 2284 } 2285 __page_frag_cache_drain(rx_buffer->page, 2286 rx_buffer->pagecnt_bias); 2287 } 2288 2289 /* clear contents of rx_buffer */ 2290 rx_buffer->page = NULL; 2291 rx_buffer->skb = NULL; 2292} 2293 2294static struct sk_buff *ixgbe_construct_skb(struct ixgbe_ring *rx_ring, 2295 struct ixgbe_rx_buffer *rx_buffer, 2296 struct xdp_buff *xdp, 2297 union ixgbe_adv_rx_desc *rx_desc) 2298{ 2299 unsigned int size = xdp->data_end - xdp->data; 2300#if (PAGE_SIZE < 8192) 2301 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2302#else 2303 unsigned int truesize = SKB_DATA_ALIGN(xdp->data_end - 2304 xdp->data_hard_start); 2305#endif 2306 struct sk_buff *skb; 2307 2308 /* prefetch first cache line of first page */ 2309 net_prefetch(xdp->data); 2310 2311 /* Note, we get here by enabling legacy-rx via: 2312 * 2313 * ethtool --set-priv-flags <dev> legacy-rx on 2314 * 2315 * In this mode, we currently get 0 extra XDP headroom as 2316 * opposed to having legacy-rx off, where we process XDP 2317 * packets going to stack via ixgbe_build_skb(). The latter 2318 * provides us currently with 192 bytes of headroom. 2319 * 2320 * For ixgbe_construct_skb() mode it means that the 2321 * xdp->data_meta will always point to xdp->data, since 2322 * the helper cannot expand the head. Should this ever 2323 * change in future for legacy-rx mode on, then lets also 2324 * add xdp->data_meta handling here. 2325 */ 2326 2327 /* allocate a skb to store the frags */ 2328 skb = napi_alloc_skb(&rx_ring->q_vector->napi, IXGBE_RX_HDR_SIZE); 2329 if (unlikely(!skb)) 2330 return NULL; 2331 2332 if (size > IXGBE_RX_HDR_SIZE) { 2333 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2334 IXGBE_CB(skb)->dma = rx_buffer->dma; 2335 2336 skb_add_rx_frag(skb, 0, rx_buffer->page, 2337 xdp->data - page_address(rx_buffer->page), 2338 size, truesize); 2339#if (PAGE_SIZE < 8192) 2340 rx_buffer->page_offset ^= truesize; 2341#else 2342 rx_buffer->page_offset += truesize; 2343#endif 2344 } else { 2345 memcpy(__skb_put(skb, size), 2346 xdp->data, ALIGN(size, sizeof(long))); 2347 rx_buffer->pagecnt_bias++; 2348 } 2349 2350 return skb; 2351} 2352 2353static struct sk_buff *ixgbe_build_skb(struct ixgbe_ring *rx_ring, 2354 struct ixgbe_rx_buffer *rx_buffer, 2355 struct xdp_buff *xdp, 2356 union ixgbe_adv_rx_desc *rx_desc) 2357{ 2358 unsigned int metasize = xdp->data - xdp->data_meta; 2359#if (PAGE_SIZE < 8192) 2360 unsigned int truesize = ixgbe_rx_pg_size(rx_ring) / 2; 2361#else 2362 unsigned int truesize = SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + 2363 SKB_DATA_ALIGN(xdp->data_end - 2364 xdp->data_hard_start); 2365#endif 2366 struct sk_buff *skb; 2367 2368 /* Prefetch first cache line of first page. If xdp->data_meta 2369 * is unused, this points exactly as xdp->data, otherwise we 2370 * likely have a consumer accessing first few bytes of meta 2371 * data, and then actual data. 2372 */ 2373 net_prefetch(xdp->data_meta); 2374 2375 /* build an skb to around the page buffer */ 2376 skb = napi_build_skb(xdp->data_hard_start, truesize); 2377 if (unlikely(!skb)) 2378 return NULL; 2379 2380 /* update pointers within the skb to store the data */ 2381 skb_reserve(skb, xdp->data - xdp->data_hard_start); 2382 __skb_put(skb, xdp->data_end - xdp->data); 2383 if (metasize) 2384 skb_metadata_set(skb, metasize); 2385 2386 /* record DMA address if this is the start of a chain of buffers */ 2387 if (!ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_EOP)) 2388 IXGBE_CB(skb)->dma = rx_buffer->dma; 2389 2390 /* update buffer offset */ 2391#if (PAGE_SIZE < 8192) 2392 rx_buffer->page_offset ^= truesize; 2393#else 2394 rx_buffer->page_offset += truesize; 2395#endif 2396 2397 return skb; 2398} 2399 2400static int ixgbe_run_xdp(struct ixgbe_adapter *adapter, 2401 struct ixgbe_ring *rx_ring, 2402 struct xdp_buff *xdp) 2403{ 2404 int err, result = IXGBE_XDP_PASS; 2405 struct bpf_prog *xdp_prog; 2406 struct ixgbe_ring *ring; 2407 struct xdp_frame *xdpf; 2408 u32 act; 2409 2410 xdp_prog = READ_ONCE(rx_ring->xdp_prog); 2411 2412 if (!xdp_prog) 2413 goto xdp_out; 2414 2415 prefetchw(xdp->data_hard_start); /* xdp_frame write */ 2416 2417 act = bpf_prog_run_xdp(xdp_prog, xdp); 2418 switch (act) { 2419 case XDP_PASS: 2420 break; 2421 case XDP_TX: 2422 xdpf = xdp_convert_buff_to_frame(xdp); 2423 if (unlikely(!xdpf)) 2424 goto out_failure; 2425 ring = ixgbe_determine_xdp_ring(adapter); 2426 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2427 spin_lock(&ring->tx_lock); 2428 result = ixgbe_xmit_xdp_ring(ring, xdpf); 2429 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 2430 spin_unlock(&ring->tx_lock); 2431 if (result == IXGBE_XDP_CONSUMED) 2432 goto out_failure; 2433 break; 2434 case XDP_REDIRECT: 2435 err = xdp_do_redirect(adapter->netdev, xdp, xdp_prog); 2436 if (err) 2437 goto out_failure; 2438 result = IXGBE_XDP_REDIR; 2439 break; 2440 default: 2441 bpf_warn_invalid_xdp_action(rx_ring->netdev, xdp_prog, act); 2442 fallthrough; 2443 case XDP_ABORTED: 2444out_failure: 2445 trace_xdp_exception(rx_ring->netdev, xdp_prog, act); 2446 fallthrough; /* handle aborts by dropping packet */ 2447 case XDP_DROP: 2448 result = IXGBE_XDP_CONSUMED; 2449 break; 2450 } 2451xdp_out: 2452 return result; 2453} 2454 2455static unsigned int ixgbe_rx_frame_truesize(struct ixgbe_ring *rx_ring, 2456 unsigned int size) 2457{ 2458 unsigned int truesize; 2459 2460#if (PAGE_SIZE < 8192) 2461 truesize = ixgbe_rx_pg_size(rx_ring) / 2; /* Must be power-of-2 */ 2462#else 2463 truesize = rx_ring->rx_offset ? 2464 SKB_DATA_ALIGN(rx_ring->rx_offset + size) + 2465 SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) : 2466 SKB_DATA_ALIGN(size); 2467#endif 2468 return truesize; 2469} 2470 2471static void ixgbe_rx_buffer_flip(struct ixgbe_ring *rx_ring, 2472 struct ixgbe_rx_buffer *rx_buffer, 2473 unsigned int size) 2474{ 2475 unsigned int truesize = ixgbe_rx_frame_truesize(rx_ring, size); 2476#if (PAGE_SIZE < 8192) 2477 rx_buffer->page_offset ^= truesize; 2478#else 2479 rx_buffer->page_offset += truesize; 2480#endif 2481} 2482 2483/** 2484 * ixgbe_clean_rx_irq - Clean completed descriptors from Rx ring - bounce buf 2485 * @q_vector: structure containing interrupt and ring information 2486 * @rx_ring: rx descriptor ring to transact packets on 2487 * @budget: Total limit on number of packets to process 2488 * 2489 * This function provides a "bounce buffer" approach to Rx interrupt 2490 * processing. The advantage to this is that on systems that have 2491 * expensive overhead for IOMMU access this provides a means of avoiding 2492 * it by maintaining the mapping of the page to the system. 2493 * 2494 * Returns amount of work completed 2495 **/ 2496static int ixgbe_clean_rx_irq(struct ixgbe_q_vector *q_vector, 2497 struct ixgbe_ring *rx_ring, 2498 const int budget) 2499{ 2500 unsigned int total_rx_bytes = 0, total_rx_packets = 0, frame_sz = 0; 2501 struct ixgbe_adapter *adapter = q_vector->adapter; 2502#ifdef IXGBE_FCOE 2503 int ddp_bytes; 2504 unsigned int mss = 0; 2505#endif /* IXGBE_FCOE */ 2506 u16 cleaned_count = ixgbe_desc_unused(rx_ring); 2507 unsigned int offset = rx_ring->rx_offset; 2508 unsigned int xdp_xmit = 0; 2509 struct xdp_buff xdp; 2510 int xdp_res = 0; 2511 2512 /* Frame size depend on rx_ring setup when PAGE_SIZE=4K */ 2513#if (PAGE_SIZE < 8192) 2514 frame_sz = ixgbe_rx_frame_truesize(rx_ring, 0); 2515#endif 2516 xdp_init_buff(&xdp, frame_sz, &rx_ring->xdp_rxq); 2517 2518 while (likely(total_rx_packets < budget)) { 2519 union ixgbe_adv_rx_desc *rx_desc; 2520 struct ixgbe_rx_buffer *rx_buffer; 2521 struct sk_buff *skb; 2522 int rx_buffer_pgcnt; 2523 unsigned int size; 2524 2525 /* return some buffers to hardware, one at a time is too slow */ 2526 if (cleaned_count >= IXGBE_RX_BUFFER_WRITE) { 2527 ixgbe_alloc_rx_buffers(rx_ring, cleaned_count); 2528 cleaned_count = 0; 2529 } 2530 2531 rx_desc = IXGBE_RX_DESC(rx_ring, rx_ring->next_to_clean); 2532 size = le16_to_cpu(rx_desc->wb.upper.length); 2533 if (!size) 2534 break; 2535 2536 /* This memory barrier is needed to keep us from reading 2537 * any other fields out of the rx_desc until we know the 2538 * descriptor has been written back 2539 */ 2540 dma_rmb(); 2541 2542 rx_buffer = ixgbe_get_rx_buffer(rx_ring, rx_desc, &skb, size, &rx_buffer_pgcnt); 2543 2544 /* retrieve a buffer from the ring */ 2545 if (!skb) { 2546 unsigned char *hard_start; 2547 2548 hard_start = page_address(rx_buffer->page) + 2549 rx_buffer->page_offset - offset; 2550 xdp_prepare_buff(&xdp, hard_start, offset, size, true); 2551 xdp_buff_clear_frags_flag(&xdp); 2552#if (PAGE_SIZE > 4096) 2553 /* At larger PAGE_SIZE, frame_sz depend on len size */ 2554 xdp.frame_sz = ixgbe_rx_frame_truesize(rx_ring, size); 2555#endif 2556 xdp_res = ixgbe_run_xdp(adapter, rx_ring, &xdp); 2557 } 2558 2559 if (xdp_res) { 2560 if (xdp_res & (IXGBE_XDP_TX | IXGBE_XDP_REDIR)) { 2561 xdp_xmit |= xdp_res; 2562 ixgbe_rx_buffer_flip(rx_ring, rx_buffer, size); 2563 } else { 2564 rx_buffer->pagecnt_bias++; 2565 } 2566 total_rx_packets++; 2567 total_rx_bytes += size; 2568 } else if (skb) { 2569 ixgbe_add_rx_frag(rx_ring, rx_buffer, skb, size); 2570 } else if (ring_uses_build_skb(rx_ring)) { 2571 skb = ixgbe_build_skb(rx_ring, rx_buffer, 2572 &xdp, rx_desc); 2573 } else { 2574 skb = ixgbe_construct_skb(rx_ring, rx_buffer, 2575 &xdp, rx_desc); 2576 } 2577 2578 /* exit if we failed to retrieve a buffer */ 2579 if (!xdp_res && !skb) { 2580 rx_ring->rx_stats.alloc_rx_buff_failed++; 2581 rx_buffer->pagecnt_bias++; 2582 break; 2583 } 2584 2585 ixgbe_put_rx_buffer(rx_ring, rx_buffer, skb, rx_buffer_pgcnt); 2586 cleaned_count++; 2587 2588 /* place incomplete frames back on ring for completion */ 2589 if (ixgbe_is_non_eop(rx_ring, rx_desc, skb)) 2590 continue; 2591 2592 /* verify the packet layout is correct */ 2593 if (xdp_res || ixgbe_cleanup_headers(rx_ring, rx_desc, skb)) 2594 continue; 2595 2596 /* probably a little skewed due to removing CRC */ 2597 total_rx_bytes += skb->len; 2598 2599 /* populate checksum, timestamp, VLAN, and protocol */ 2600 ixgbe_process_skb_fields(rx_ring, rx_desc, skb); 2601 2602#ifdef IXGBE_FCOE 2603 /* if ddp, not passing to ULD unless for FCP_RSP or error */ 2604 if (ixgbe_rx_is_fcoe(rx_ring, rx_desc)) { 2605 ddp_bytes = ixgbe_fcoe_ddp(adapter, rx_desc, skb); 2606 /* include DDPed FCoE data */ 2607 if (ddp_bytes > 0) { 2608 if (!mss) { 2609 mss = rx_ring->netdev->mtu - 2610 sizeof(struct fcoe_hdr) - 2611 sizeof(struct fc_frame_header) - 2612 sizeof(struct fcoe_crc_eof); 2613 if (mss > 512) 2614 mss &= ~511; 2615 } 2616 total_rx_bytes += ddp_bytes; 2617 total_rx_packets += DIV_ROUND_UP(ddp_bytes, 2618 mss); 2619 } 2620 if (!ddp_bytes) { 2621 dev_kfree_skb_any(skb); 2622 continue; 2623 } 2624 } 2625 2626#endif /* IXGBE_FCOE */ 2627 ixgbe_rx_skb(q_vector, skb); 2628 2629 /* update budget accounting */ 2630 total_rx_packets++; 2631 } 2632 2633 if (xdp_xmit & IXGBE_XDP_REDIR) 2634 xdp_do_flush(); 2635 2636 if (xdp_xmit & IXGBE_XDP_TX) { 2637 struct ixgbe_ring *ring = ixgbe_determine_xdp_ring(adapter); 2638 2639 ixgbe_xdp_ring_update_tail_locked(ring); 2640 } 2641 2642 ixgbe_update_rx_ring_stats(rx_ring, q_vector, total_rx_packets, 2643 total_rx_bytes); 2644 2645 return total_rx_packets; 2646} 2647 2648/** 2649 * ixgbe_configure_msix - Configure MSI-X hardware 2650 * @adapter: board private structure 2651 * 2652 * ixgbe_configure_msix sets up the hardware to properly generate MSI-X 2653 * interrupts. 2654 **/ 2655static void ixgbe_configure_msix(struct ixgbe_adapter *adapter) 2656{ 2657 struct ixgbe_q_vector *q_vector; 2658 int v_idx; 2659 u32 mask; 2660 2661 /* Populate MSIX to EITR Select */ 2662 if (adapter->num_vfs > 32) { 2663 u32 eitrsel = BIT(adapter->num_vfs - 32) - 1; 2664 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, eitrsel); 2665 } 2666 2667 /* 2668 * Populate the IVAR table and set the ITR values to the 2669 * corresponding register. 2670 */ 2671 for (v_idx = 0; v_idx < adapter->num_q_vectors; v_idx++) { 2672 struct ixgbe_ring *ring; 2673 q_vector = adapter->q_vector[v_idx]; 2674 2675 ixgbe_for_each_ring(ring, q_vector->rx) 2676 ixgbe_set_ivar(adapter, 0, ring->reg_idx, v_idx); 2677 2678 ixgbe_for_each_ring(ring, q_vector->tx) 2679 ixgbe_set_ivar(adapter, 1, ring->reg_idx, v_idx); 2680 2681 ixgbe_write_eitr(q_vector); 2682 } 2683 2684 switch (adapter->hw.mac.type) { 2685 case ixgbe_mac_82598EB: 2686 ixgbe_set_ivar(adapter, -1, IXGBE_IVAR_OTHER_CAUSES_INDEX, 2687 v_idx); 2688 break; 2689 case ixgbe_mac_82599EB: 2690 case ixgbe_mac_X540: 2691 case ixgbe_mac_X550: 2692 case ixgbe_mac_X550EM_x: 2693 case ixgbe_mac_x550em_a: 2694 case ixgbe_mac_e610: 2695 ixgbe_set_ivar(adapter, -1, 1, v_idx); 2696 break; 2697 default: 2698 break; 2699 } 2700 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITR(v_idx), 1950); 2701 2702 /* set up to autoclear timer, and the vectors */ 2703 mask = IXGBE_EIMS_ENABLE_MASK; 2704 mask &= ~(IXGBE_EIMS_OTHER | 2705 IXGBE_EIMS_MAILBOX | 2706 IXGBE_EIMS_LSC); 2707 2708 if (adapter->hw.mac.type == ixgbe_mac_e610) 2709 mask &= ~IXGBE_EIMS_FW_EVENT; 2710 2711 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIAC, mask); 2712} 2713 2714/** 2715 * ixgbe_update_itr - update the dynamic ITR value based on statistics 2716 * @q_vector: structure containing interrupt and ring information 2717 * @ring_container: structure containing ring performance data 2718 * 2719 * Stores a new ITR value based on packets and byte 2720 * counts during the last interrupt. The advantage of per interrupt 2721 * computation is faster updates and more accurate ITR for the current 2722 * traffic pattern. Constants in this function were computed 2723 * based on theoretical maximum wire speed and thresholds were set based 2724 * on testing data as well as attempting to minimize response time 2725 * while increasing bulk throughput. 2726 **/ 2727static void ixgbe_update_itr(struct ixgbe_q_vector *q_vector, 2728 struct ixgbe_ring_container *ring_container) 2729{ 2730 unsigned int itr = IXGBE_ITR_ADAPTIVE_MIN_USECS | 2731 IXGBE_ITR_ADAPTIVE_LATENCY; 2732 unsigned int avg_wire_size, packets, bytes; 2733 unsigned long next_update = jiffies; 2734 2735 /* If we don't have any rings just leave ourselves set for maximum 2736 * possible latency so we take ourselves out of the equation. 2737 */ 2738 if (!ring_container->ring) 2739 return; 2740 2741 /* If we didn't update within up to 1 - 2 jiffies we can assume 2742 * that either packets are coming in so slow there hasn't been 2743 * any work, or that there is so much work that NAPI is dealing 2744 * with interrupt moderation and we don't need to do anything. 2745 */ 2746 if (time_after(next_update, ring_container->next_update)) 2747 goto clear_counts; 2748 2749 packets = ring_container->total_packets; 2750 2751 /* We have no packets to actually measure against. This means 2752 * either one of the other queues on this vector is active or 2753 * we are a Tx queue doing TSO with too high of an interrupt rate. 2754 * 2755 * When this occurs just tick up our delay by the minimum value 2756 * and hope that this extra delay will prevent us from being called 2757 * without any work on our queue. 2758 */ 2759 if (!packets) { 2760 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2761 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2762 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2763 itr += ring_container->itr & IXGBE_ITR_ADAPTIVE_LATENCY; 2764 goto clear_counts; 2765 } 2766 2767 bytes = ring_container->total_bytes; 2768 2769 /* If packets are less than 4 or bytes are less than 9000 assume 2770 * insufficient data to use bulk rate limiting approach. We are 2771 * likely latency driven. 2772 */ 2773 if (packets < 4 && bytes < 9000) { 2774 itr = IXGBE_ITR_ADAPTIVE_LATENCY; 2775 goto adjust_by_size; 2776 } 2777 2778 /* Between 4 and 48 we can assume that our current interrupt delay 2779 * is only slightly too low. As such we should increase it by a small 2780 * fixed amount. 2781 */ 2782 if (packets < 48) { 2783 itr = (q_vector->itr >> 2) + IXGBE_ITR_ADAPTIVE_MIN_INC; 2784 if (itr > IXGBE_ITR_ADAPTIVE_MAX_USECS) 2785 itr = IXGBE_ITR_ADAPTIVE_MAX_USECS; 2786 goto clear_counts; 2787 } 2788 2789 /* Between 48 and 96 is our "goldilocks" zone where we are working 2790 * out "just right". Just report that our current ITR is good for us. 2791 */ 2792 if (packets < 96) { 2793 itr = q_vector->itr >> 2; 2794 goto clear_counts; 2795 } 2796 2797 /* If packet count is 96 or greater we are likely looking at a slight 2798 * overrun of the delay we want. Try halving our delay to see if that 2799 * will cut the number of packets in half per interrupt. 2800 */ 2801 if (packets < 256) { 2802 itr = q_vector->itr >> 3; 2803 if (itr < IXGBE_ITR_ADAPTIVE_MIN_USECS) 2804 itr = IXGBE_ITR_ADAPTIVE_MIN_USECS; 2805 goto clear_counts; 2806 } 2807 2808 /* The paths below assume we are dealing with a bulk ITR since number 2809 * of packets is 256 or greater. We are just going to have to compute 2810 * a value and try to bring the count under control, though for smaller 2811 * packet sizes there isn't much we can do as NAPI polling will likely 2812 * be kicking in sooner rather than later. 2813 */ 2814 itr = IXGBE_ITR_ADAPTIVE_BULK; 2815 2816adjust_by_size: 2817 /* If packet counts are 256 or greater we can assume we have a gross 2818 * overestimation of what the rate should be. Instead of trying to fine 2819 * tune it just use the formula below to try and dial in an exact value 2820 * give the current packet size of the frame. 2821 */ 2822 avg_wire_size = bytes / packets; 2823 2824 /* The following is a crude approximation of: 2825 * wmem_default / (size + overhead) = desired_pkts_per_int 2826 * rate / bits_per_byte / (size + ethernet overhead) = pkt_rate 2827 * (desired_pkt_rate / pkt_rate) * usecs_per_sec = ITR value 2828 * 2829 * Assuming wmem_default is 212992 and overhead is 640 bytes per 2830 * packet, (256 skb, 64 headroom, 320 shared info), we can reduce the 2831 * formula down to 2832 * 2833 * (170 * (size + 24)) / (size + 640) = ITR 2834 * 2835 * We first do some math on the packet size and then finally bitshift 2836 * by 8 after rounding up. We also have to account for PCIe link speed 2837 * difference as ITR scales based on this. 2838 */ 2839 if (avg_wire_size <= 60) { 2840 /* Start at 50k ints/sec */ 2841 avg_wire_size = 5120; 2842 } else if (avg_wire_size <= 316) { 2843 /* 50K ints/sec to 16K ints/sec */ 2844 avg_wire_size *= 40; 2845 avg_wire_size += 2720; 2846 } else if (avg_wire_size <= 1084) { 2847 /* 16K ints/sec to 9.2K ints/sec */ 2848 avg_wire_size *= 15; 2849 avg_wire_size += 11452; 2850 } else if (avg_wire_size < 1968) { 2851 /* 9.2K ints/sec to 8K ints/sec */ 2852 avg_wire_size *= 5; 2853 avg_wire_size += 22420; 2854 } else { 2855 /* plateau at a limit of 8K ints/sec */ 2856 avg_wire_size = 32256; 2857 } 2858 2859 /* If we are in low latency mode half our delay which doubles the rate 2860 * to somewhere between 100K to 16K ints/sec 2861 */ 2862 if (itr & IXGBE_ITR_ADAPTIVE_LATENCY) 2863 avg_wire_size >>= 1; 2864 2865 /* Resultant value is 256 times larger than it needs to be. This 2866 * gives us room to adjust the value as needed to either increase 2867 * or decrease the value based on link speeds of 10G, 2.5G, 1G, etc. 2868 * 2869 * Use addition as we have already recorded the new latency flag 2870 * for the ITR value. 2871 */ 2872 switch (q_vector->adapter->link_speed) { 2873 case IXGBE_LINK_SPEED_10GB_FULL: 2874 case IXGBE_LINK_SPEED_100_FULL: 2875 default: 2876 itr += DIV_ROUND_UP(avg_wire_size, 2877 IXGBE_ITR_ADAPTIVE_MIN_INC * 256) * 2878 IXGBE_ITR_ADAPTIVE_MIN_INC; 2879 break; 2880 case IXGBE_LINK_SPEED_2_5GB_FULL: 2881 case IXGBE_LINK_SPEED_1GB_FULL: 2882 case IXGBE_LINK_SPEED_10_FULL: 2883 if (avg_wire_size > 8064) 2884 avg_wire_size = 8064; 2885 itr += DIV_ROUND_UP(avg_wire_size, 2886 IXGBE_ITR_ADAPTIVE_MIN_INC * 64) * 2887 IXGBE_ITR_ADAPTIVE_MIN_INC; 2888 break; 2889 } 2890 2891clear_counts: 2892 /* write back value */ 2893 ring_container->itr = itr; 2894 2895 /* next update should occur within next jiffy */ 2896 ring_container->next_update = next_update + 1; 2897 2898 ring_container->total_bytes = 0; 2899 ring_container->total_packets = 0; 2900} 2901 2902/** 2903 * ixgbe_write_eitr - write EITR register in hardware specific way 2904 * @q_vector: structure containing interrupt and ring information 2905 * 2906 * This function is made to be called by ethtool and by the driver 2907 * when it needs to update EITR registers at runtime. Hardware 2908 * specific quirks/differences are taken care of here. 2909 */ 2910void ixgbe_write_eitr(struct ixgbe_q_vector *q_vector) 2911{ 2912 struct ixgbe_adapter *adapter = q_vector->adapter; 2913 struct ixgbe_hw *hw = &adapter->hw; 2914 int v_idx = q_vector->v_idx; 2915 u32 itr_reg = q_vector->itr & IXGBE_MAX_EITR; 2916 2917 switch (adapter->hw.mac.type) { 2918 case ixgbe_mac_82598EB: 2919 /* must write high and low 16 bits to reset counter */ 2920 itr_reg |= (itr_reg << 16); 2921 break; 2922 case ixgbe_mac_82599EB: 2923 case ixgbe_mac_X540: 2924 case ixgbe_mac_X550: 2925 case ixgbe_mac_X550EM_x: 2926 case ixgbe_mac_x550em_a: 2927 case ixgbe_mac_e610: 2928 /* 2929 * set the WDIS bit to not clear the timer bits and cause an 2930 * immediate assertion of the interrupt 2931 */ 2932 itr_reg |= IXGBE_EITR_CNT_WDIS; 2933 break; 2934 default: 2935 break; 2936 } 2937 IXGBE_WRITE_REG(hw, IXGBE_EITR(v_idx), itr_reg); 2938} 2939 2940static void ixgbe_set_itr(struct ixgbe_q_vector *q_vector) 2941{ 2942 u32 new_itr; 2943 2944 ixgbe_update_itr(q_vector, &q_vector->tx); 2945 ixgbe_update_itr(q_vector, &q_vector->rx); 2946 2947 /* use the smallest value of new ITR delay calculations */ 2948 new_itr = min(q_vector->rx.itr, q_vector->tx.itr); 2949 2950 /* Clear latency flag if set, shift into correct position */ 2951 new_itr &= ~IXGBE_ITR_ADAPTIVE_LATENCY; 2952 new_itr <<= 2; 2953 2954 if (new_itr != q_vector->itr) { 2955 /* save the algorithm value here */ 2956 q_vector->itr = new_itr; 2957 2958 ixgbe_write_eitr(q_vector); 2959 } 2960} 2961 2962/** 2963 * ixgbe_check_overtemp_subtask - check for over temperature 2964 * @adapter: pointer to adapter 2965 **/ 2966static void ixgbe_check_overtemp_subtask(struct ixgbe_adapter *adapter) 2967{ 2968 struct ixgbe_hw *hw = &adapter->hw; 2969 u32 eicr = adapter->interrupt_event; 2970 2971 if (test_bit(__IXGBE_DOWN, &adapter->state)) 2972 return; 2973 2974 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_EVENT)) 2975 return; 2976 2977 adapter->flags2 &= ~IXGBE_FLAG2_TEMP_SENSOR_EVENT; 2978 2979 switch (hw->device_id) { 2980 case IXGBE_DEV_ID_82599_T3_LOM: 2981 /* 2982 * Since the warning interrupt is for both ports 2983 * we don't have to check if: 2984 * - This interrupt wasn't for our port. 2985 * - We may have missed the interrupt so always have to 2986 * check if we got a LSC 2987 */ 2988 if (!(eicr & IXGBE_EICR_GPI_SDP0_8259X) && 2989 !(eicr & IXGBE_EICR_LSC)) 2990 return; 2991 2992 if (!(eicr & IXGBE_EICR_LSC) && hw->mac.ops.check_link) { 2993 u32 speed; 2994 bool link_up = false; 2995 2996 hw->mac.ops.check_link(hw, &speed, &link_up, false); 2997 2998 if (link_up) 2999 return; 3000 } 3001 3002 /* Check if this is not due to overtemp */ 3003 if (!hw->phy.ops.check_overtemp(hw)) 3004 return; 3005 3006 break; 3007 case IXGBE_DEV_ID_X550EM_A_1G_T: 3008 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 3009 if (!hw->phy.ops.check_overtemp(hw)) 3010 return; 3011 break; 3012 default: 3013 if (adapter->hw.mac.type >= ixgbe_mac_X540) 3014 return; 3015 if (!(eicr & IXGBE_EICR_GPI_SDP0(hw))) 3016 return; 3017 break; 3018 } 3019 e_crit(drv, "%s\n", ixgbe_overheat_msg); 3020 3021 adapter->interrupt_event = 0; 3022} 3023 3024static void ixgbe_check_fan_failure(struct ixgbe_adapter *adapter, u32 eicr) 3025{ 3026 struct ixgbe_hw *hw = &adapter->hw; 3027 3028 if ((adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) && 3029 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 3030 e_crit(probe, "Fan has stopped, replace the adapter\n"); 3031 /* write to clear the interrupt */ 3032 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 3033 } 3034} 3035 3036static void ixgbe_check_overtemp_event(struct ixgbe_adapter *adapter, u32 eicr) 3037{ 3038 struct ixgbe_hw *hw = &adapter->hw; 3039 3040 if (!(adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE)) 3041 return; 3042 3043 switch (adapter->hw.mac.type) { 3044 case ixgbe_mac_82599EB: 3045 /* 3046 * Need to check link state so complete overtemp check 3047 * on service task 3048 */ 3049 if (((eicr & IXGBE_EICR_GPI_SDP0(hw)) || 3050 (eicr & IXGBE_EICR_LSC)) && 3051 (!test_bit(__IXGBE_DOWN, &adapter->state))) { 3052 adapter->interrupt_event = eicr; 3053 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 3054 ixgbe_service_event_schedule(adapter); 3055 return; 3056 } 3057 return; 3058 case ixgbe_mac_x550em_a: 3059 if (eicr & IXGBE_EICR_GPI_SDP0_X550EM_a) { 3060 adapter->interrupt_event = eicr; 3061 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_EVENT; 3062 ixgbe_service_event_schedule(adapter); 3063 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 3064 IXGBE_EICR_GPI_SDP0_X550EM_a); 3065 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EICR, 3066 IXGBE_EICR_GPI_SDP0_X550EM_a); 3067 } 3068 return; 3069 case ixgbe_mac_X550: 3070 case ixgbe_mac_X540: 3071 if (!(eicr & IXGBE_EICR_TS)) 3072 return; 3073 break; 3074 default: 3075 return; 3076 } 3077 3078 e_crit(drv, "%s\n", ixgbe_overheat_msg); 3079} 3080 3081static inline bool ixgbe_is_sfp(struct ixgbe_hw *hw) 3082{ 3083 switch (hw->mac.type) { 3084 case ixgbe_mac_82598EB: 3085 if (hw->phy.type == ixgbe_phy_nl) 3086 return true; 3087 return false; 3088 case ixgbe_mac_82599EB: 3089 case ixgbe_mac_X550EM_x: 3090 case ixgbe_mac_x550em_a: 3091 switch (hw->mac.ops.get_media_type(hw)) { 3092 case ixgbe_media_type_fiber: 3093 case ixgbe_media_type_fiber_qsfp: 3094 return true; 3095 default: 3096 return false; 3097 } 3098 default: 3099 return false; 3100 } 3101} 3102 3103static void ixgbe_check_sfp_event(struct ixgbe_adapter *adapter, u32 eicr) 3104{ 3105 struct ixgbe_hw *hw = &adapter->hw; 3106 u32 eicr_mask = IXGBE_EICR_GPI_SDP2(hw); 3107 3108 if (!ixgbe_is_sfp(hw)) 3109 return; 3110 3111 /* Later MAC's use different SDP */ 3112 if (hw->mac.type >= ixgbe_mac_X540) 3113 eicr_mask = IXGBE_EICR_GPI_SDP0_X540; 3114 3115 if (eicr & eicr_mask) { 3116 /* Clear the interrupt */ 3117 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr_mask); 3118 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 3119 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 3120 adapter->sfp_poll_time = 0; 3121 ixgbe_service_event_schedule(adapter); 3122 } 3123 } 3124 3125 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 3126 (eicr & IXGBE_EICR_GPI_SDP1(hw))) { 3127 /* Clear the interrupt */ 3128 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_GPI_SDP1(hw)); 3129 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 3130 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 3131 ixgbe_service_event_schedule(adapter); 3132 } 3133 } 3134} 3135 3136static void ixgbe_check_lsc(struct ixgbe_adapter *adapter) 3137{ 3138 struct ixgbe_hw *hw = &adapter->hw; 3139 3140 adapter->lsc_int++; 3141 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 3142 adapter->link_check_timeout = jiffies; 3143 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 3144 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_LSC); 3145 IXGBE_WRITE_FLUSH(hw); 3146 ixgbe_service_event_schedule(adapter); 3147 } 3148} 3149 3150/** 3151 * ixgbe_check_phy_fw_load - check if PHY FW load failed 3152 * @adapter: pointer to adapter structure 3153 * @link_cfg_err: bitmap from the link info structure 3154 * 3155 * Check if external PHY FW load failed and print an error message if it did. 3156 */ 3157static void ixgbe_check_phy_fw_load(struct ixgbe_adapter *adapter, 3158 u8 link_cfg_err) 3159{ 3160 if (!(link_cfg_err & IXGBE_ACI_LINK_EXTERNAL_PHY_LOAD_FAILURE)) { 3161 adapter->flags2 &= ~IXGBE_FLAG2_PHY_FW_LOAD_FAILED; 3162 return; 3163 } 3164 3165 if (adapter->flags2 & IXGBE_FLAG2_PHY_FW_LOAD_FAILED) 3166 return; 3167 3168 if (link_cfg_err & IXGBE_ACI_LINK_EXTERNAL_PHY_LOAD_FAILURE) { 3169 netdev_err(adapter->netdev, "Device failed to load the FW for the external PHY. Please download and install the latest NVM for your device and try again\n"); 3170 adapter->flags2 |= IXGBE_FLAG2_PHY_FW_LOAD_FAILED; 3171 } 3172} 3173 3174/** 3175 * ixgbe_check_module_power - check module power level 3176 * @adapter: pointer to adapter structure 3177 * @link_cfg_err: bitmap from the link info structure 3178 * 3179 * Check module power level returned by a previous call to aci_get_link_info 3180 * and print error messages if module power level is not supported. 3181 */ 3182static void ixgbe_check_module_power(struct ixgbe_adapter *adapter, 3183 u8 link_cfg_err) 3184{ 3185 /* If module power level is supported, clear the flag. */ 3186 if (!(link_cfg_err & (IXGBE_ACI_LINK_INVAL_MAX_POWER_LIMIT | 3187 IXGBE_ACI_LINK_MODULE_POWER_UNSUPPORTED))) { 3188 adapter->flags2 &= ~IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3189 return; 3190 } 3191 3192 /* If IXGBE_FLAG2_MOD_POWER_UNSUPPORTED was previously set and the 3193 * above block didn't clear this bit, there's nothing to do. 3194 */ 3195 if (adapter->flags2 & IXGBE_FLAG2_MOD_POWER_UNSUPPORTED) 3196 return; 3197 3198 if (link_cfg_err & IXGBE_ACI_LINK_INVAL_MAX_POWER_LIMIT) { 3199 netdev_err(adapter->netdev, "The installed module is incompatible with the device's NVM image. Cannot start link.\n"); 3200 adapter->flags2 |= IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3201 } else if (link_cfg_err & IXGBE_ACI_LINK_MODULE_POWER_UNSUPPORTED) { 3202 netdev_err(adapter->netdev, "The module's power requirements exceed the device's power supply. Cannot start link.\n"); 3203 adapter->flags2 |= IXGBE_FLAG2_MOD_POWER_UNSUPPORTED; 3204 } 3205} 3206 3207/** 3208 * ixgbe_check_link_cfg_err - check if link configuration failed 3209 * @adapter: pointer to adapter structure 3210 * @link_cfg_err: bitmap from the link info structure 3211 * 3212 * Print if any link configuration failure happens due to the value in the 3213 * link_cfg_err parameter in the link info structure. 3214 */ 3215static void ixgbe_check_link_cfg_err(struct ixgbe_adapter *adapter, 3216 u8 link_cfg_err) 3217{ 3218 ixgbe_check_module_power(adapter, link_cfg_err); 3219 ixgbe_check_phy_fw_load(adapter, link_cfg_err); 3220} 3221 3222/** 3223 * ixgbe_process_link_status_event - process the link event 3224 * @adapter: pointer to adapter structure 3225 * @link_up: true if the physical link is up and false if it is down 3226 * @link_speed: current link speed received from the link event 3227 * 3228 * Return: 0 on success or negative value on failure. 3229 */ 3230static int 3231ixgbe_process_link_status_event(struct ixgbe_adapter *adapter, bool link_up, 3232 u16 link_speed) 3233{ 3234 struct ixgbe_hw *hw = &adapter->hw; 3235 int status; 3236 3237 /* Update the link info structures and re-enable link events, 3238 * don't bail on failure due to other book keeping needed. 3239 */ 3240 status = ixgbe_update_link_info(hw); 3241 if (status) 3242 e_dev_err("Failed to update link status, err %d aq_err %d\n", 3243 status, hw->aci.last_status); 3244 3245 ixgbe_check_link_cfg_err(adapter, hw->link.link_info.link_cfg_err); 3246 3247 /* Check if the link state is up after updating link info, and treat 3248 * this event as an UP event since the link is actually UP now. 3249 */ 3250 if (hw->link.link_info.link_info & IXGBE_ACI_LINK_UP) 3251 link_up = true; 3252 3253 /* Turn off PHY if media was removed. */ 3254 if (!(adapter->flags2 & IXGBE_FLAG2_NO_MEDIA) && 3255 !(hw->link.link_info.link_info & IXGBE_ACI_MEDIA_AVAILABLE)) 3256 adapter->flags2 |= IXGBE_FLAG2_NO_MEDIA; 3257 3258 if (link_up == adapter->link_up && 3259 link_up == netif_carrier_ok(adapter->netdev) && 3260 link_speed == adapter->link_speed) 3261 return 0; 3262 3263 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 3264 adapter->link_check_timeout = jiffies; 3265 ixgbe_watchdog_update_link(adapter); 3266 3267 if (link_up) 3268 ixgbe_watchdog_link_is_up(adapter); 3269 else 3270 ixgbe_watchdog_link_is_down(adapter); 3271 3272 return 0; 3273} 3274 3275/** 3276 * ixgbe_handle_link_status_event - handle link status event via ACI 3277 * @adapter: pointer to adapter structure 3278 * @e: event structure containing link status info 3279 */ 3280static void 3281ixgbe_handle_link_status_event(struct ixgbe_adapter *adapter, 3282 struct ixgbe_aci_event *e) 3283{ 3284 struct ixgbe_aci_cmd_get_link_status_data *link_data; 3285 u16 link_speed; 3286 bool link_up; 3287 3288 link_data = (struct ixgbe_aci_cmd_get_link_status_data *)e->msg_buf; 3289 3290 link_up = !!(link_data->link_info & IXGBE_ACI_LINK_UP); 3291 link_speed = le16_to_cpu(link_data->link_speed); 3292 3293 if (ixgbe_process_link_status_event(adapter, link_up, link_speed)) 3294 e_dev_warn("Could not process link status event"); 3295} 3296 3297/** 3298 * ixgbe_schedule_fw_event - schedule Firmware event 3299 * @adapter: pointer to the adapter structure 3300 * 3301 * If the adapter is not in down, removing or resetting state, 3302 * an event is scheduled. 3303 */ 3304static void ixgbe_schedule_fw_event(struct ixgbe_adapter *adapter) 3305{ 3306 if (!test_bit(__IXGBE_DOWN, &adapter->state) && 3307 !test_bit(__IXGBE_REMOVING, &adapter->state) && 3308 !test_bit(__IXGBE_RESETTING, &adapter->state)) { 3309 adapter->flags2 |= IXGBE_FLAG2_FW_ASYNC_EVENT; 3310 ixgbe_service_event_schedule(adapter); 3311 } 3312} 3313 3314/** 3315 * ixgbe_aci_event_cleanup - release msg_buf memory 3316 * @event: pointer to the event holding msg_buf to be released 3317 * 3318 * Clean memory allocated for event's msg_buf. Implements auto memory cleanup. 3319 */ 3320static void ixgbe_aci_event_cleanup(struct ixgbe_aci_event *event) 3321{ 3322 kfree(event->msg_buf); 3323} 3324 3325/** 3326 * ixgbe_handle_fw_event - handle Firmware event 3327 * @adapter: pointer to the adapter structure 3328 * 3329 * Obtain an event from the ACI and then and then process it according to the 3330 * type of the event and the opcode. 3331 */ 3332static void ixgbe_handle_fw_event(struct ixgbe_adapter *adapter) 3333{ 3334 struct ixgbe_aci_event event __cleanup(ixgbe_aci_event_cleanup); 3335 struct ixgbe_hw *hw = &adapter->hw; 3336 bool pending = false; 3337 int err; 3338 3339 if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT) 3340 adapter->flags2 &= ~IXGBE_FLAG2_FW_ASYNC_EVENT; 3341 event.buf_len = IXGBE_ACI_MAX_BUFFER_SIZE; 3342 event.msg_buf = kzalloc(event.buf_len, GFP_KERNEL); 3343 if (!event.msg_buf) 3344 return; 3345 3346 do { 3347 err = ixgbe_aci_get_event(hw, &event, &pending); 3348 if (err) 3349 break; 3350 3351 switch (le16_to_cpu(event.desc.opcode)) { 3352 case ixgbe_aci_opc_get_link_status: 3353 ixgbe_handle_link_status_event(adapter, &event); 3354 break; 3355 case ixgbe_aci_opc_temp_tca_event: 3356 e_crit(drv, "%s\n", ixgbe_overheat_msg); 3357 ixgbe_down(adapter); 3358 break; 3359 case libie_aqc_opc_fw_logs_event: 3360 libie_get_fwlog_data(&hw->fwlog, event.msg_buf, 3361 le16_to_cpu(event.desc.datalen)); 3362 break; 3363 default: 3364 e_warn(hw, "unknown FW async event captured\n"); 3365 break; 3366 } 3367 } while (pending); 3368} 3369 3370static inline void ixgbe_irq_enable_queues(struct ixgbe_adapter *adapter, 3371 u64 qmask) 3372{ 3373 struct ixgbe_hw *hw = &adapter->hw; 3374 u32 mask; 3375 3376 switch (hw->mac.type) { 3377 case ixgbe_mac_82598EB: 3378 mask = (IXGBE_EIMS_RTX_QUEUE & qmask); 3379 IXGBE_WRITE_REG(hw, IXGBE_EIMS, mask); 3380 break; 3381 case ixgbe_mac_82599EB: 3382 case ixgbe_mac_X540: 3383 case ixgbe_mac_X550: 3384 case ixgbe_mac_X550EM_x: 3385 case ixgbe_mac_x550em_a: 3386 case ixgbe_mac_e610: 3387 mask = (qmask & 0xFFFFFFFF); 3388 if (mask) 3389 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 3390 mask = (qmask >> 32); 3391 if (mask) 3392 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 3393 break; 3394 default: 3395 break; 3396 } 3397 /* skip the flush */ 3398} 3399 3400/** 3401 * ixgbe_irq_enable - Enable default interrupt generation settings 3402 * @adapter: board private structure 3403 * @queues: enable irqs for queues 3404 * @flush: flush register write 3405 **/ 3406static inline void ixgbe_irq_enable(struct ixgbe_adapter *adapter, bool queues, 3407 bool flush) 3408{ 3409 struct ixgbe_hw *hw = &adapter->hw; 3410 u32 mask = (IXGBE_EIMS_ENABLE_MASK & ~IXGBE_EIMS_RTX_QUEUE); 3411 3412 /* don't reenable LSC while waiting for link */ 3413 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 3414 mask &= ~IXGBE_EIMS_LSC; 3415 3416 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) 3417 switch (adapter->hw.mac.type) { 3418 case ixgbe_mac_82599EB: 3419 mask |= IXGBE_EIMS_GPI_SDP0(hw); 3420 break; 3421 case ixgbe_mac_X540: 3422 case ixgbe_mac_X550: 3423 case ixgbe_mac_X550EM_x: 3424 case ixgbe_mac_x550em_a: 3425 mask |= IXGBE_EIMS_TS; 3426 break; 3427 default: 3428 break; 3429 } 3430 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 3431 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3432 switch (adapter->hw.mac.type) { 3433 case ixgbe_mac_82599EB: 3434 mask |= IXGBE_EIMS_GPI_SDP1(hw); 3435 mask |= IXGBE_EIMS_GPI_SDP2(hw); 3436 fallthrough; 3437 case ixgbe_mac_X540: 3438 case ixgbe_mac_X550: 3439 case ixgbe_mac_X550EM_x: 3440 case ixgbe_mac_e610: 3441 mask |= IXGBE_EIMS_FW_EVENT; 3442 fallthrough; 3443 case ixgbe_mac_x550em_a: 3444 if (adapter->hw.device_id == IXGBE_DEV_ID_X550EM_X_SFP || 3445 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP || 3446 adapter->hw.device_id == IXGBE_DEV_ID_X550EM_A_SFP_N) 3447 mask |= IXGBE_EIMS_GPI_SDP0(&adapter->hw); 3448 if (adapter->hw.phy.type == ixgbe_phy_x550em_ext_t) 3449 mask |= IXGBE_EICR_GPI_SDP0_X540; 3450 mask |= IXGBE_EIMS_ECC; 3451 mask |= IXGBE_EIMS_MAILBOX; 3452 break; 3453 default: 3454 break; 3455 } 3456 3457 if ((adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) && 3458 !(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 3459 mask |= IXGBE_EIMS_FLOW_DIR; 3460 3461 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMS, mask); 3462 if (queues) 3463 ixgbe_irq_enable_queues(adapter, ~0); 3464 if (flush) 3465 IXGBE_WRITE_FLUSH(&adapter->hw); 3466} 3467 3468static irqreturn_t ixgbe_msix_other(int irq, void *data) 3469{ 3470 struct ixgbe_adapter *adapter = data; 3471 struct ixgbe_hw *hw = &adapter->hw; 3472 u32 eicr; 3473 3474 /* 3475 * Workaround for Silicon errata. Use clear-by-write instead 3476 * of clear-by-read. Reading with EICS will return the 3477 * interrupt causes without clearing, which later be done 3478 * with the write to EICR. 3479 */ 3480 eicr = IXGBE_READ_REG(hw, IXGBE_EICS); 3481 3482 /* The lower 16bits of the EICR register are for the queue interrupts 3483 * which should be masked here in order to not accidentally clear them if 3484 * the bits are high when ixgbe_msix_other is called. There is a race 3485 * condition otherwise which results in possible performance loss 3486 * especially if the ixgbe_msix_other interrupt is triggering 3487 * consistently (as it would when PPS is turned on for the X540 device) 3488 */ 3489 eicr &= 0xFFFF0000; 3490 3491 IXGBE_WRITE_REG(hw, IXGBE_EICR, eicr); 3492 3493 if (eicr & IXGBE_EICR_LSC) 3494 ixgbe_check_lsc(adapter); 3495 3496 if (eicr & IXGBE_EICR_MAILBOX) 3497 ixgbe_msg_task(adapter); 3498 3499 if (eicr & IXGBE_EICR_FW_EVENT) 3500 ixgbe_schedule_fw_event(adapter); 3501 3502 switch (hw->mac.type) { 3503 case ixgbe_mac_82599EB: 3504 case ixgbe_mac_X540: 3505 case ixgbe_mac_X550: 3506 case ixgbe_mac_X550EM_x: 3507 case ixgbe_mac_x550em_a: 3508 case ixgbe_mac_e610: 3509 if (hw->phy.type == ixgbe_phy_x550em_ext_t && 3510 (eicr & IXGBE_EICR_GPI_SDP0_X540)) { 3511 adapter->flags2 |= IXGBE_FLAG2_PHY_INTERRUPT; 3512 ixgbe_service_event_schedule(adapter); 3513 IXGBE_WRITE_REG(hw, IXGBE_EICR, 3514 IXGBE_EICR_GPI_SDP0_X540); 3515 } 3516 if (eicr & IXGBE_EICR_ECC) { 3517 e_info(link, "Received ECC Err, initiating reset\n"); 3518 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3519 ixgbe_service_event_schedule(adapter); 3520 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3521 } 3522 /* Handle Flow Director Full threshold interrupt */ 3523 if (eicr & IXGBE_EICR_FLOW_DIR) { 3524 int reinit_count = 0; 3525 int i; 3526 for (i = 0; i < adapter->num_tx_queues; i++) { 3527 struct ixgbe_ring *ring = adapter->tx_ring[i]; 3528 if (test_and_clear_bit(__IXGBE_TX_FDIR_INIT_DONE, 3529 &ring->state)) 3530 reinit_count++; 3531 } 3532 if (reinit_count) { 3533 /* no more flow director interrupts until after init */ 3534 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_EIMC_FLOW_DIR); 3535 adapter->flags2 |= IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 3536 ixgbe_service_event_schedule(adapter); 3537 } 3538 } 3539 ixgbe_check_sfp_event(adapter, eicr); 3540 ixgbe_check_overtemp_event(adapter, eicr); 3541 break; 3542 default: 3543 break; 3544 } 3545 3546 ixgbe_check_fan_failure(adapter, eicr); 3547 3548 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3549 ixgbe_ptp_check_pps_event(adapter); 3550 3551 /* re-enable the original interrupt state, no lsc, no queues */ 3552 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3553 ixgbe_irq_enable(adapter, false, false); 3554 3555 return IRQ_HANDLED; 3556} 3557 3558static irqreturn_t ixgbe_msix_clean_rings(int irq, void *data) 3559{ 3560 struct ixgbe_q_vector *q_vector = data; 3561 3562 /* EIAM disabled interrupts (on this vector) for us */ 3563 3564 if (q_vector->rx.ring || q_vector->tx.ring) 3565 napi_schedule_irqoff(&q_vector->napi); 3566 3567 return IRQ_HANDLED; 3568} 3569 3570/** 3571 * ixgbe_poll - NAPI Rx polling callback 3572 * @napi: structure for representing this polling device 3573 * @budget: how many packets driver is allowed to clean 3574 * 3575 * This function is used for legacy and MSI, NAPI mode 3576 **/ 3577int ixgbe_poll(struct napi_struct *napi, int budget) 3578{ 3579 struct ixgbe_q_vector *q_vector = 3580 container_of(napi, struct ixgbe_q_vector, napi); 3581 struct ixgbe_adapter *adapter = q_vector->adapter; 3582 struct ixgbe_ring *ring; 3583 int per_ring_budget, work_done = 0; 3584 bool clean_complete = true; 3585 3586#ifdef CONFIG_IXGBE_DCA 3587 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) 3588 ixgbe_update_dca(q_vector); 3589#endif 3590 3591 ixgbe_for_each_ring(ring, q_vector->tx) { 3592 bool wd = ring->xsk_pool ? 3593 ixgbe_clean_xdp_tx_irq(q_vector, ring, budget) : 3594 ixgbe_clean_tx_irq(q_vector, ring, budget); 3595 3596 if (!wd) 3597 clean_complete = false; 3598 } 3599 3600 /* Exit if we are called by netpoll */ 3601 if (budget <= 0) 3602 return budget; 3603 3604 /* attempt to distribute budget to each queue fairly, but don't allow 3605 * the budget to go below 1 because we'll exit polling */ 3606 if (q_vector->rx.count > 1) 3607 per_ring_budget = max(budget/q_vector->rx.count, 1); 3608 else 3609 per_ring_budget = budget; 3610 3611 ixgbe_for_each_ring(ring, q_vector->rx) { 3612 int cleaned = ring->xsk_pool ? 3613 ixgbe_clean_rx_irq_zc(q_vector, ring, 3614 per_ring_budget) : 3615 ixgbe_clean_rx_irq(q_vector, ring, 3616 per_ring_budget); 3617 3618 work_done += cleaned; 3619 if (cleaned >= per_ring_budget) 3620 clean_complete = false; 3621 } 3622 3623 /* If all work not completed, return budget and keep polling */ 3624 if (!clean_complete) 3625 return budget; 3626 3627 /* all work done, exit the polling mode */ 3628 if (likely(napi_complete_done(napi, work_done))) { 3629 if (adapter->rx_itr_setting & 1) 3630 ixgbe_set_itr(q_vector); 3631 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3632 ixgbe_irq_enable_queues(adapter, 3633 BIT_ULL(q_vector->v_idx)); 3634 } 3635 3636 return min(work_done, budget - 1); 3637} 3638 3639/** 3640 * ixgbe_request_msix_irqs - Initialize MSI-X interrupts 3641 * @adapter: board private structure 3642 * 3643 * ixgbe_request_msix_irqs allocates MSI-X vectors and requests 3644 * interrupts from the kernel. 3645 **/ 3646static int ixgbe_request_msix_irqs(struct ixgbe_adapter *adapter) 3647{ 3648 struct net_device *netdev = adapter->netdev; 3649 unsigned int ri = 0, ti = 0; 3650 int vector, err; 3651 3652 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3653 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3654 struct msix_entry *entry = &adapter->msix_entries[vector]; 3655 3656 if (q_vector->tx.ring && q_vector->rx.ring) { 3657 snprintf(q_vector->name, sizeof(q_vector->name), 3658 "%s-TxRx-%u", netdev->name, ri++); 3659 ti++; 3660 } else if (q_vector->rx.ring) { 3661 snprintf(q_vector->name, sizeof(q_vector->name), 3662 "%s-rx-%u", netdev->name, ri++); 3663 } else if (q_vector->tx.ring) { 3664 snprintf(q_vector->name, sizeof(q_vector->name), 3665 "%s-tx-%u", netdev->name, ti++); 3666 } else { 3667 /* skip this unused q_vector */ 3668 continue; 3669 } 3670 err = request_irq(entry->vector, &ixgbe_msix_clean_rings, 0, 3671 q_vector->name, q_vector); 3672 if (err) { 3673 e_err(probe, "request_irq failed for MSIX interrupt " 3674 "Error: %d\n", err); 3675 goto free_queue_irqs; 3676 } 3677 /* If Flow Director is enabled, set interrupt affinity */ 3678 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3679 /* assign the mask for this irq */ 3680 irq_update_affinity_hint(entry->vector, 3681 &q_vector->affinity_mask); 3682 } 3683 } 3684 3685 err = request_irq(adapter->msix_entries[vector].vector, 3686 ixgbe_msix_other, 0, netdev->name, adapter); 3687 if (err) { 3688 e_err(probe, "request_irq for msix_other failed: %d\n", err); 3689 goto free_queue_irqs; 3690 } 3691 3692 return 0; 3693 3694free_queue_irqs: 3695 while (vector) { 3696 vector--; 3697 irq_update_affinity_hint(adapter->msix_entries[vector].vector, 3698 NULL); 3699 free_irq(adapter->msix_entries[vector].vector, 3700 adapter->q_vector[vector]); 3701 } 3702 adapter->flags &= ~IXGBE_FLAG_MSIX_ENABLED; 3703 pci_disable_msix(adapter->pdev); 3704 kfree(adapter->msix_entries); 3705 adapter->msix_entries = NULL; 3706 return err; 3707} 3708 3709/** 3710 * ixgbe_intr - legacy mode Interrupt Handler 3711 * @irq: interrupt number 3712 * @data: pointer to a network interface device structure 3713 **/ 3714static irqreturn_t ixgbe_intr(int irq, void *data) 3715{ 3716 struct ixgbe_adapter *adapter = data; 3717 struct ixgbe_hw *hw = &adapter->hw; 3718 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3719 u32 eicr; 3720 3721 /* 3722 * Workaround for silicon errata #26 on 82598. Mask the interrupt 3723 * before the read of EICR. 3724 */ 3725 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK); 3726 3727 /* for NAPI, using EIAM to auto-mask tx/rx interrupt bits on read 3728 * therefore no explicit interrupt disable is necessary */ 3729 eicr = IXGBE_READ_REG(hw, IXGBE_EICR); 3730 if (!eicr) { 3731 /* 3732 * shared interrupt alert! 3733 * make sure interrupts are enabled because the read will 3734 * have disabled interrupts due to EIAM 3735 * finish the workaround of silicon errata on 82598. Unmask 3736 * the interrupt that we masked before the EICR read. 3737 */ 3738 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3739 ixgbe_irq_enable(adapter, true, true); 3740 return IRQ_NONE; /* Not our interrupt */ 3741 } 3742 3743 if (eicr & IXGBE_EICR_LSC) 3744 ixgbe_check_lsc(adapter); 3745 3746 if (eicr & IXGBE_EICR_FW_EVENT) 3747 ixgbe_schedule_fw_event(adapter); 3748 3749 switch (hw->mac.type) { 3750 case ixgbe_mac_82599EB: 3751 ixgbe_check_sfp_event(adapter, eicr); 3752 fallthrough; 3753 case ixgbe_mac_X540: 3754 case ixgbe_mac_X550: 3755 case ixgbe_mac_X550EM_x: 3756 case ixgbe_mac_x550em_a: 3757 case ixgbe_mac_e610: 3758 if (eicr & IXGBE_EICR_ECC) { 3759 e_info(link, "Received ECC Err, initiating reset\n"); 3760 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 3761 ixgbe_service_event_schedule(adapter); 3762 IXGBE_WRITE_REG(hw, IXGBE_EICR, IXGBE_EICR_ECC); 3763 } 3764 ixgbe_check_overtemp_event(adapter, eicr); 3765 break; 3766 default: 3767 break; 3768 } 3769 3770 ixgbe_check_fan_failure(adapter, eicr); 3771 if (unlikely(eicr & IXGBE_EICR_TIMESYNC)) 3772 ixgbe_ptp_check_pps_event(adapter); 3773 3774 /* would disable interrupts here but EIAM disabled it */ 3775 napi_schedule_irqoff(&q_vector->napi); 3776 3777 /* 3778 * re-enable link(maybe) and non-queue interrupts, no flush. 3779 * ixgbe_poll will re-enable the queue interrupts 3780 */ 3781 if (!test_bit(__IXGBE_DOWN, &adapter->state)) 3782 ixgbe_irq_enable(adapter, false, false); 3783 3784 return IRQ_HANDLED; 3785} 3786 3787/** 3788 * ixgbe_request_irq - initialize interrupts 3789 * @adapter: board private structure 3790 * 3791 * Attempts to configure interrupts using the best available 3792 * capabilities of the hardware and kernel. 3793 **/ 3794static int ixgbe_request_irq(struct ixgbe_adapter *adapter) 3795{ 3796 struct net_device *netdev = adapter->netdev; 3797 int err; 3798 3799 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 3800 err = ixgbe_request_msix_irqs(adapter); 3801 else if (adapter->flags & IXGBE_FLAG_MSI_ENABLED) 3802 err = request_irq(adapter->pdev->irq, ixgbe_intr, 0, 3803 netdev->name, adapter); 3804 else 3805 err = request_irq(adapter->pdev->irq, ixgbe_intr, IRQF_SHARED, 3806 netdev->name, adapter); 3807 3808 if (err) 3809 e_err(probe, "request_irq failed, Error %d\n", err); 3810 3811 return err; 3812} 3813 3814static void ixgbe_free_irq(struct ixgbe_adapter *adapter) 3815{ 3816 int vector; 3817 3818 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 3819 free_irq(adapter->pdev->irq, adapter); 3820 return; 3821 } 3822 3823 if (!adapter->msix_entries) 3824 return; 3825 3826 for (vector = 0; vector < adapter->num_q_vectors; vector++) { 3827 struct ixgbe_q_vector *q_vector = adapter->q_vector[vector]; 3828 struct msix_entry *entry = &adapter->msix_entries[vector]; 3829 3830 /* free only the irqs that were actually requested */ 3831 if (!q_vector->rx.ring && !q_vector->tx.ring) 3832 continue; 3833 3834 /* clear the affinity_mask in the IRQ descriptor */ 3835 irq_update_affinity_hint(entry->vector, NULL); 3836 3837 free_irq(entry->vector, q_vector); 3838 } 3839 3840 free_irq(adapter->msix_entries[vector].vector, adapter); 3841} 3842 3843/** 3844 * ixgbe_irq_disable - Mask off interrupt generation on the NIC 3845 * @adapter: board private structure 3846 **/ 3847static inline void ixgbe_irq_disable(struct ixgbe_adapter *adapter) 3848{ 3849 switch (adapter->hw.mac.type) { 3850 case ixgbe_mac_82598EB: 3851 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, ~0); 3852 break; 3853 case ixgbe_mac_82599EB: 3854 case ixgbe_mac_X540: 3855 case ixgbe_mac_X550: 3856 case ixgbe_mac_X550EM_x: 3857 case ixgbe_mac_x550em_a: 3858 case ixgbe_mac_e610: 3859 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, 0xFFFF0000); 3860 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(0), ~0); 3861 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC_EX(1), ~0); 3862 break; 3863 default: 3864 break; 3865 } 3866 IXGBE_WRITE_FLUSH(&adapter->hw); 3867 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 3868 int vector; 3869 3870 for (vector = 0; vector < adapter->num_q_vectors; vector++) 3871 synchronize_irq(adapter->msix_entries[vector].vector); 3872 3873 synchronize_irq(adapter->msix_entries[vector++].vector); 3874 } else { 3875 synchronize_irq(adapter->pdev->irq); 3876 } 3877} 3878 3879/** 3880 * ixgbe_configure_msi_and_legacy - Initialize PIN (INTA...) and MSI interrupts 3881 * @adapter: board private structure 3882 * 3883 **/ 3884static void ixgbe_configure_msi_and_legacy(struct ixgbe_adapter *adapter) 3885{ 3886 struct ixgbe_q_vector *q_vector = adapter->q_vector[0]; 3887 3888 ixgbe_write_eitr(q_vector); 3889 3890 ixgbe_set_ivar(adapter, 0, 0, 0); 3891 ixgbe_set_ivar(adapter, 1, 0, 0); 3892 3893 e_info(hw, "Legacy interrupt IVAR setup done\n"); 3894} 3895 3896/** 3897 * ixgbe_configure_tx_ring - Configure 8259x Tx ring after Reset 3898 * @adapter: board private structure 3899 * @ring: structure containing ring specific data 3900 * 3901 * Configure the Tx descriptor ring after a reset. 3902 **/ 3903void ixgbe_configure_tx_ring(struct ixgbe_adapter *adapter, 3904 struct ixgbe_ring *ring) 3905{ 3906 struct ixgbe_hw *hw = &adapter->hw; 3907 u64 tdba = ring->dma; 3908 int wait_loop = 10; 3909 u32 txdctl = IXGBE_TXDCTL_ENABLE; 3910 u8 reg_idx = ring->reg_idx; 3911 3912 ring->xsk_pool = NULL; 3913 if (ring_is_xdp(ring)) 3914 ring->xsk_pool = ixgbe_xsk_pool(adapter, ring); 3915 3916 /* disable queue to avoid issues while updating state */ 3917 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), 0); 3918 IXGBE_WRITE_FLUSH(hw); 3919 3920 IXGBE_WRITE_REG(hw, IXGBE_TDBAL(reg_idx), 3921 (tdba & DMA_BIT_MASK(32))); 3922 IXGBE_WRITE_REG(hw, IXGBE_TDBAH(reg_idx), (tdba >> 32)); 3923 IXGBE_WRITE_REG(hw, IXGBE_TDLEN(reg_idx), 3924 ring->count * sizeof(union ixgbe_adv_tx_desc)); 3925 IXGBE_WRITE_REG(hw, IXGBE_TDH(reg_idx), 0); 3926 IXGBE_WRITE_REG(hw, IXGBE_TDT(reg_idx), 0); 3927 ring->tail = adapter->io_addr + IXGBE_TDT(reg_idx); 3928 3929 /* 3930 * set WTHRESH to encourage burst writeback, it should not be set 3931 * higher than 1 when: 3932 * - ITR is 0 as it could cause false TX hangs 3933 * - ITR is set to > 100k int/sec and BQL is enabled 3934 * 3935 * In order to avoid issues WTHRESH + PTHRESH should always be equal 3936 * to or less than the number of on chip descriptors, which is 3937 * currently 40. 3938 */ 3939 if (!ring->q_vector || (ring->q_vector->itr < IXGBE_100K_ITR)) 3940 txdctl |= 1u << 16; /* WTHRESH = 1 */ 3941 else 3942 txdctl |= 8u << 16; /* WTHRESH = 8 */ 3943 3944 /* 3945 * Setting PTHRESH to 32 both improves performance 3946 * and avoids a TX hang with DFP enabled 3947 */ 3948 txdctl |= (1u << 8) | /* HTHRESH = 1 */ 3949 32; /* PTHRESH = 32 */ 3950 3951 /* reinitialize flowdirector state */ 3952 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 3953 ring->atr_sample_rate = adapter->atr_sample_rate; 3954 ring->atr_count = 0; 3955 set_bit(__IXGBE_TX_FDIR_INIT_DONE, &ring->state); 3956 } else { 3957 ring->atr_sample_rate = 0; 3958 } 3959 3960 /* initialize XPS */ 3961 if (!test_and_set_bit(__IXGBE_TX_XPS_INIT_DONE, &ring->state)) { 3962 struct ixgbe_q_vector *q_vector = ring->q_vector; 3963 3964 if (q_vector) 3965 netif_set_xps_queue(ring->netdev, 3966 &q_vector->affinity_mask, 3967 ring->queue_index); 3968 } 3969 3970 clear_bit(__IXGBE_HANG_CHECK_ARMED, &ring->state); 3971 3972 /* reinitialize tx_buffer_info */ 3973 memset(ring->tx_buffer_info, 0, 3974 sizeof(struct ixgbe_tx_buffer) * ring->count); 3975 3976 /* enable queue */ 3977 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), txdctl); 3978 3979 /* TXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 3980 if (hw->mac.type == ixgbe_mac_82598EB && 3981 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 3982 return; 3983 3984 /* poll to verify queue is enabled */ 3985 do { 3986 usleep_range(1000, 2000); 3987 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 3988 } while (--wait_loop && !(txdctl & IXGBE_TXDCTL_ENABLE)); 3989 if (!wait_loop) 3990 hw_dbg(hw, "Could not enable Tx Queue %d\n", reg_idx); 3991} 3992 3993static void ixgbe_setup_mtqc(struct ixgbe_adapter *adapter) 3994{ 3995 struct ixgbe_hw *hw = &adapter->hw; 3996 u32 rttdcs, mtqc; 3997 u8 tcs = adapter->hw_tcs; 3998 3999 if (hw->mac.type == ixgbe_mac_82598EB) 4000 return; 4001 4002 /* disable the arbiter while setting MTQC */ 4003 rttdcs = IXGBE_READ_REG(hw, IXGBE_RTTDCS); 4004 rttdcs |= IXGBE_RTTDCS_ARBDIS; 4005 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 4006 4007 /* set transmit pool layout */ 4008 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 4009 mtqc = IXGBE_MTQC_VT_ENA; 4010 if (tcs > 4) 4011 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 4012 else if (tcs > 1) 4013 mtqc |= IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 4014 else if (adapter->ring_feature[RING_F_VMDQ].mask == 4015 IXGBE_82599_VMDQ_4Q_MASK) 4016 mtqc |= IXGBE_MTQC_32VF; 4017 else 4018 mtqc |= IXGBE_MTQC_64VF; 4019 } else { 4020 if (tcs > 4) { 4021 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_8TC_8TQ; 4022 } else if (tcs > 1) { 4023 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 4024 } else { 4025 u8 max_txq = adapter->num_tx_queues + 4026 adapter->num_xdp_queues; 4027 if (max_txq > 63) 4028 mtqc = IXGBE_MTQC_RT_ENA | IXGBE_MTQC_4TC_4TQ; 4029 else 4030 mtqc = IXGBE_MTQC_64Q_1PB; 4031 } 4032 } 4033 4034 IXGBE_WRITE_REG(hw, IXGBE_MTQC, mtqc); 4035 4036 /* Enable Security TX Buffer IFG for multiple pb */ 4037 if (tcs) { 4038 u32 sectx = IXGBE_READ_REG(hw, IXGBE_SECTXMINIFG); 4039 sectx |= IXGBE_SECTX_DCB; 4040 IXGBE_WRITE_REG(hw, IXGBE_SECTXMINIFG, sectx); 4041 } 4042 4043 /* re-enable the arbiter */ 4044 rttdcs &= ~IXGBE_RTTDCS_ARBDIS; 4045 IXGBE_WRITE_REG(hw, IXGBE_RTTDCS, rttdcs); 4046} 4047 4048/** 4049 * ixgbe_configure_tx - Configure 8259x Transmit Unit after Reset 4050 * @adapter: board private structure 4051 * 4052 * Configure the Tx unit of the MAC after a reset. 4053 **/ 4054static void ixgbe_configure_tx(struct ixgbe_adapter *adapter) 4055{ 4056 struct ixgbe_hw *hw = &adapter->hw; 4057 u32 dmatxctl; 4058 u32 i; 4059 4060 ixgbe_setup_mtqc(adapter); 4061 4062 if (hw->mac.type != ixgbe_mac_82598EB) { 4063 /* DMATXCTL.EN must be before Tx queues are enabled */ 4064 dmatxctl = IXGBE_READ_REG(hw, IXGBE_DMATXCTL); 4065 dmatxctl |= IXGBE_DMATXCTL_TE; 4066 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, dmatxctl); 4067 } 4068 4069 /* Setup the HW Tx Head and Tail descriptor pointers */ 4070 for (i = 0; i < adapter->num_tx_queues; i++) 4071 ixgbe_configure_tx_ring(adapter, adapter->tx_ring[i]); 4072 for (i = 0; i < adapter->num_xdp_queues; i++) 4073 ixgbe_configure_tx_ring(adapter, adapter->xdp_ring[i]); 4074} 4075 4076static void ixgbe_enable_rx_drop(struct ixgbe_adapter *adapter, 4077 struct ixgbe_ring *ring) 4078{ 4079 struct ixgbe_hw *hw = &adapter->hw; 4080 u8 reg_idx = ring->reg_idx; 4081 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 4082 4083 srrctl |= IXGBE_SRRCTL_DROP_EN; 4084 4085 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 4086} 4087 4088static void ixgbe_disable_rx_drop(struct ixgbe_adapter *adapter, 4089 struct ixgbe_ring *ring) 4090{ 4091 struct ixgbe_hw *hw = &adapter->hw; 4092 u8 reg_idx = ring->reg_idx; 4093 u32 srrctl = IXGBE_READ_REG(hw, IXGBE_SRRCTL(reg_idx)); 4094 4095 srrctl &= ~IXGBE_SRRCTL_DROP_EN; 4096 4097 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 4098} 4099 4100#ifdef CONFIG_IXGBE_DCB 4101void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 4102#else 4103static void ixgbe_set_rx_drop_en(struct ixgbe_adapter *adapter) 4104#endif 4105{ 4106 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 4107 struct ixgbe_hw *hw = &adapter->hw; 4108 int i; 4109 4110 if (hw->mac.ops.disable_mdd) 4111 hw->mac.ops.disable_mdd(hw); 4112 4113 if (adapter->ixgbe_ieee_pfc) 4114 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 4115 4116 /* 4117 * We should set the drop enable bit if: 4118 * SR-IOV is enabled 4119 * or 4120 * Number of Rx queues > 1 and flow control is disabled 4121 * 4122 * This allows us to avoid head of line blocking for security 4123 * and performance reasons. 4124 */ 4125 if (adapter->num_vfs || (adapter->num_rx_queues > 1 && 4126 !(adapter->hw.fc.current_mode & ixgbe_fc_tx_pause) && !pfc_en)) { 4127 for (i = 0; i < adapter->num_rx_queues; i++) 4128 ixgbe_enable_rx_drop(adapter, adapter->rx_ring[i]); 4129 } else { 4130 for (i = 0; i < adapter->num_rx_queues; i++) 4131 ixgbe_disable_rx_drop(adapter, adapter->rx_ring[i]); 4132 } 4133 4134 if (hw->mac.ops.enable_mdd) 4135 hw->mac.ops.enable_mdd(hw); 4136} 4137 4138#define IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT 2 4139 4140static void ixgbe_configure_srrctl(struct ixgbe_adapter *adapter, 4141 struct ixgbe_ring *rx_ring) 4142{ 4143 struct ixgbe_hw *hw = &adapter->hw; 4144 u32 srrctl; 4145 u8 reg_idx = rx_ring->reg_idx; 4146 4147 if (hw->mac.type == ixgbe_mac_82598EB) { 4148 u16 mask = adapter->ring_feature[RING_F_RSS].mask; 4149 4150 /* 4151 * if VMDq is not active we must program one srrctl register 4152 * per RSS queue since we have enabled RDRXCTL.MVMEN 4153 */ 4154 reg_idx &= mask; 4155 } 4156 4157 /* configure header buffer length, needed for RSC */ 4158 srrctl = IXGBE_RX_HDR_SIZE << IXGBE_SRRCTL_BSIZEHDRSIZE_SHIFT; 4159 4160 /* configure the packet buffer length */ 4161 if (rx_ring->xsk_pool) { 4162 u32 xsk_buf_len = xsk_pool_get_rx_frame_size(rx_ring->xsk_pool); 4163 4164 /* If the MAC support setting RXDCTL.RLPML, the 4165 * SRRCTL[n].BSIZEPKT is set to PAGE_SIZE and 4166 * RXDCTL.RLPML is set to the actual UMEM buffer 4167 * size. If not, then we are stuck with a 1k buffer 4168 * size resolution. In this case frames larger than 4169 * the UMEM buffer size viewed in a 1k resolution will 4170 * be dropped. 4171 */ 4172 if (hw->mac.type != ixgbe_mac_82599EB) 4173 srrctl |= PAGE_SIZE >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 4174 else 4175 srrctl |= xsk_buf_len >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 4176 } else if (test_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state)) { 4177 srrctl |= IXGBE_RXBUFFER_3K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 4178 } else { 4179 srrctl |= IXGBE_RXBUFFER_2K >> IXGBE_SRRCTL_BSIZEPKT_SHIFT; 4180 } 4181 4182 /* configure descriptor type */ 4183 srrctl |= IXGBE_SRRCTL_DESCTYPE_ADV_ONEBUF; 4184 4185 IXGBE_WRITE_REG(hw, IXGBE_SRRCTL(reg_idx), srrctl); 4186} 4187 4188/** 4189 * ixgbe_rss_indir_tbl_entries - Return RSS indirection table entries 4190 * @adapter: device handle 4191 * 4192 * - 82598/82599/X540: 128 4193 * - X550(non-SRIOV mode): 512 4194 * - X550(SRIOV mode): 64 4195 */ 4196u32 ixgbe_rss_indir_tbl_entries(struct ixgbe_adapter *adapter) 4197{ 4198 if (adapter->hw.mac.type < ixgbe_mac_X550) 4199 return 128; 4200 else if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 4201 return 64; 4202 else 4203 return 512; 4204} 4205 4206/** 4207 * ixgbe_store_key - Write the RSS key to HW 4208 * @adapter: device handle 4209 * 4210 * Write the RSS key stored in adapter.rss_key to HW. 4211 */ 4212void ixgbe_store_key(struct ixgbe_adapter *adapter) 4213{ 4214 struct ixgbe_hw *hw = &adapter->hw; 4215 int i; 4216 4217 for (i = 0; i < 10; i++) 4218 IXGBE_WRITE_REG(hw, IXGBE_RSSRK(i), adapter->rss_key[i]); 4219} 4220 4221/** 4222 * ixgbe_init_rss_key - Initialize adapter RSS key 4223 * @adapter: device handle 4224 * 4225 * Allocates and initializes the RSS key if it is not allocated. 4226 **/ 4227static inline int ixgbe_init_rss_key(struct ixgbe_adapter *adapter) 4228{ 4229 u32 *rss_key; 4230 4231 if (!adapter->rss_key) { 4232 rss_key = kzalloc(IXGBE_RSS_KEY_SIZE, GFP_KERNEL); 4233 if (unlikely(!rss_key)) 4234 return -ENOMEM; 4235 4236 netdev_rss_key_fill(rss_key, IXGBE_RSS_KEY_SIZE); 4237 adapter->rss_key = rss_key; 4238 } 4239 4240 return 0; 4241} 4242 4243/** 4244 * ixgbe_store_reta - Write the RETA table to HW 4245 * @adapter: device handle 4246 * 4247 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 4248 */ 4249void ixgbe_store_reta(struct ixgbe_adapter *adapter) 4250{ 4251 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 4252 struct ixgbe_hw *hw = &adapter->hw; 4253 u32 reta = 0; 4254 u32 indices_multi; 4255 u8 *indir_tbl = adapter->rss_indir_tbl; 4256 4257 /* Fill out the redirection table as follows: 4258 * - 82598: 8 bit wide entries containing pair of 4 bit RSS 4259 * indices. 4260 * - 82599/X540: 8 bit wide entries containing 4 bit RSS index 4261 * - X550: 8 bit wide entries containing 6 bit RSS index 4262 */ 4263 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 4264 indices_multi = 0x11; 4265 else 4266 indices_multi = 0x1; 4267 4268 /* Write redirection table to HW */ 4269 for (i = 0; i < reta_entries; i++) { 4270 reta |= indices_multi * indir_tbl[i] << (i & 0x3) * 8; 4271 if ((i & 3) == 3) { 4272 if (i < 128) 4273 IXGBE_WRITE_REG(hw, IXGBE_RETA(i >> 2), reta); 4274 else 4275 IXGBE_WRITE_REG(hw, IXGBE_ERETA((i >> 2) - 32), 4276 reta); 4277 reta = 0; 4278 } 4279 } 4280} 4281 4282/** 4283 * ixgbe_store_vfreta - Write the RETA table to HW (x550 devices in SRIOV mode) 4284 * @adapter: device handle 4285 * 4286 * Write the RSS redirection table stored in adapter.rss_indir_tbl[] to HW. 4287 */ 4288static void ixgbe_store_vfreta(struct ixgbe_adapter *adapter) 4289{ 4290 u32 i, reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 4291 struct ixgbe_hw *hw = &adapter->hw; 4292 u32 vfreta = 0; 4293 4294 /* Write redirection table to HW */ 4295 for (i = 0; i < reta_entries; i++) { 4296 u16 pool = adapter->num_rx_pools; 4297 4298 vfreta |= (u32)adapter->rss_indir_tbl[i] << (i & 0x3) * 8; 4299 if ((i & 3) != 3) 4300 continue; 4301 4302 while (pool--) 4303 IXGBE_WRITE_REG(hw, 4304 IXGBE_PFVFRETA(i >> 2, VMDQ_P(pool)), 4305 vfreta); 4306 vfreta = 0; 4307 } 4308} 4309 4310static void ixgbe_setup_reta(struct ixgbe_adapter *adapter) 4311{ 4312 u32 i, j; 4313 u32 reta_entries = ixgbe_rss_indir_tbl_entries(adapter); 4314 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 4315 4316 /* Program table for at least 4 queues w/ SR-IOV so that VFs can 4317 * make full use of any rings they may have. We will use the 4318 * PSRTYPE register to control how many rings we use within the PF. 4319 */ 4320 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && (rss_i < 4)) 4321 rss_i = 4; 4322 4323 /* Fill out hash function seeds */ 4324 ixgbe_store_key(adapter); 4325 4326 /* Fill out redirection table */ 4327 memset(adapter->rss_indir_tbl, 0, sizeof(adapter->rss_indir_tbl)); 4328 4329 for (i = 0, j = 0; i < reta_entries; i++, j++) { 4330 if (j == rss_i) 4331 j = 0; 4332 4333 adapter->rss_indir_tbl[i] = j; 4334 } 4335 4336 ixgbe_store_reta(adapter); 4337} 4338 4339static void ixgbe_setup_vfreta(struct ixgbe_adapter *adapter) 4340{ 4341 struct ixgbe_hw *hw = &adapter->hw; 4342 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 4343 int i, j; 4344 4345 /* Fill out hash function seeds */ 4346 for (i = 0; i < 10; i++) { 4347 u16 pool = adapter->num_rx_pools; 4348 4349 while (pool--) 4350 IXGBE_WRITE_REG(hw, 4351 IXGBE_PFVFRSSRK(i, VMDQ_P(pool)), 4352 *(adapter->rss_key + i)); 4353 } 4354 4355 /* Fill out the redirection table */ 4356 for (i = 0, j = 0; i < 64; i++, j++) { 4357 if (j == rss_i) 4358 j = 0; 4359 4360 adapter->rss_indir_tbl[i] = j; 4361 } 4362 4363 ixgbe_store_vfreta(adapter); 4364} 4365 4366static void ixgbe_setup_mrqc(struct ixgbe_adapter *adapter) 4367{ 4368 struct ixgbe_hw *hw = &adapter->hw; 4369 u32 mrqc = 0, rss_field = 0, vfmrqc = 0; 4370 u32 rxcsum; 4371 4372 /* Disable indicating checksum in descriptor, enables RSS hash */ 4373 rxcsum = IXGBE_READ_REG(hw, IXGBE_RXCSUM); 4374 rxcsum |= IXGBE_RXCSUM_PCSD; 4375 IXGBE_WRITE_REG(hw, IXGBE_RXCSUM, rxcsum); 4376 4377 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 4378 if (adapter->ring_feature[RING_F_RSS].mask) 4379 mrqc = IXGBE_MRQC_RSSEN; 4380 } else { 4381 u8 tcs = adapter->hw_tcs; 4382 4383 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 4384 if (tcs > 4) 4385 mrqc = IXGBE_MRQC_VMDQRT8TCEN; /* 8 TCs */ 4386 else if (tcs > 1) 4387 mrqc = IXGBE_MRQC_VMDQRT4TCEN; /* 4 TCs */ 4388 else if (adapter->ring_feature[RING_F_VMDQ].mask == 4389 IXGBE_82599_VMDQ_4Q_MASK) 4390 mrqc = IXGBE_MRQC_VMDQRSS32EN; 4391 else 4392 mrqc = IXGBE_MRQC_VMDQRSS64EN; 4393 4394 /* Enable L3/L4 for Tx Switched packets only for X550, 4395 * older devices do not support this feature 4396 */ 4397 if (hw->mac.type >= ixgbe_mac_X550) 4398 mrqc |= IXGBE_MRQC_L3L4TXSWEN; 4399 } else { 4400 if (tcs > 4) 4401 mrqc = IXGBE_MRQC_RTRSS8TCEN; 4402 else if (tcs > 1) 4403 mrqc = IXGBE_MRQC_RTRSS4TCEN; 4404 else 4405 mrqc = IXGBE_MRQC_RSSEN; 4406 } 4407 } 4408 4409 /* Perform hash on these packet types */ 4410 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4 | 4411 IXGBE_MRQC_RSS_FIELD_IPV4_TCP | 4412 IXGBE_MRQC_RSS_FIELD_IPV6 | 4413 IXGBE_MRQC_RSS_FIELD_IPV6_TCP; 4414 4415 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV4_UDP) 4416 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV4_UDP; 4417 if (adapter->flags2 & IXGBE_FLAG2_RSS_FIELD_IPV6_UDP) 4418 rss_field |= IXGBE_MRQC_RSS_FIELD_IPV6_UDP; 4419 4420 if ((hw->mac.type >= ixgbe_mac_X550) && 4421 (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) { 4422 u16 pool = adapter->num_rx_pools; 4423 4424 /* Enable VF RSS mode */ 4425 mrqc |= IXGBE_MRQC_MULTIPLE_RSS; 4426 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 4427 4428 /* Setup RSS through the VF registers */ 4429 ixgbe_setup_vfreta(adapter); 4430 vfmrqc = IXGBE_MRQC_RSSEN; 4431 vfmrqc |= rss_field; 4432 4433 while (pool--) 4434 IXGBE_WRITE_REG(hw, 4435 IXGBE_PFVFMRQC(VMDQ_P(pool)), 4436 vfmrqc); 4437 } else { 4438 ixgbe_setup_reta(adapter); 4439 mrqc |= rss_field; 4440 IXGBE_WRITE_REG(hw, IXGBE_MRQC, mrqc); 4441 } 4442} 4443 4444/** 4445 * ixgbe_configure_rscctl - enable RSC for the indicated ring 4446 * @adapter: address of board private structure 4447 * @ring: structure containing ring specific data 4448 **/ 4449static void ixgbe_configure_rscctl(struct ixgbe_adapter *adapter, 4450 struct ixgbe_ring *ring) 4451{ 4452 struct ixgbe_hw *hw = &adapter->hw; 4453 u32 rscctrl; 4454 u8 reg_idx = ring->reg_idx; 4455 4456 if (!ring_is_rsc_enabled(ring)) 4457 return; 4458 4459 rscctrl = IXGBE_READ_REG(hw, IXGBE_RSCCTL(reg_idx)); 4460 rscctrl |= IXGBE_RSCCTL_RSCEN; 4461 /* 4462 * we must limit the number of descriptors so that the 4463 * total size of max desc * buf_len is not greater 4464 * than 65536 4465 */ 4466 rscctrl |= IXGBE_RSCCTL_MAXDESC_16; 4467 IXGBE_WRITE_REG(hw, IXGBE_RSCCTL(reg_idx), rscctrl); 4468} 4469 4470#define IXGBE_MAX_RX_DESC_POLL 10 4471static void ixgbe_rx_desc_queue_enable(struct ixgbe_adapter *adapter, 4472 struct ixgbe_ring *ring) 4473{ 4474 struct ixgbe_hw *hw = &adapter->hw; 4475 int wait_loop = IXGBE_MAX_RX_DESC_POLL; 4476 u32 rxdctl; 4477 u8 reg_idx = ring->reg_idx; 4478 4479 if (ixgbe_removed(hw->hw_addr)) 4480 return; 4481 /* RXDCTL.EN will return 0 on 82598 if link is down, so skip it */ 4482 if (hw->mac.type == ixgbe_mac_82598EB && 4483 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 4484 return; 4485 4486 do { 4487 usleep_range(1000, 2000); 4488 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4489 } while (--wait_loop && !(rxdctl & IXGBE_RXDCTL_ENABLE)); 4490 4491 if (!wait_loop) { 4492 e_err(drv, "RXDCTL.ENABLE on Rx queue %d not set within " 4493 "the polling period\n", reg_idx); 4494 } 4495} 4496 4497void ixgbe_configure_rx_ring(struct ixgbe_adapter *adapter, 4498 struct ixgbe_ring *ring) 4499{ 4500 struct ixgbe_hw *hw = &adapter->hw; 4501 union ixgbe_adv_rx_desc *rx_desc; 4502 u64 rdba = ring->dma; 4503 u32 rxdctl; 4504 u8 reg_idx = ring->reg_idx; 4505 4506 xdp_rxq_info_unreg_mem_model(&ring->xdp_rxq); 4507 ring->xsk_pool = ixgbe_xsk_pool(adapter, ring); 4508 if (ring->xsk_pool) { 4509 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4510 MEM_TYPE_XSK_BUFF_POOL, 4511 NULL)); 4512 xsk_pool_set_rxq_info(ring->xsk_pool, &ring->xdp_rxq); 4513 } else { 4514 WARN_ON(xdp_rxq_info_reg_mem_model(&ring->xdp_rxq, 4515 MEM_TYPE_PAGE_SHARED, NULL)); 4516 } 4517 4518 /* disable queue to avoid use of these values while updating state */ 4519 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 4520 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 4521 4522 /* write value back with RXDCTL.ENABLE bit cleared */ 4523 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4524 IXGBE_WRITE_FLUSH(hw); 4525 4526 IXGBE_WRITE_REG(hw, IXGBE_RDBAL(reg_idx), (rdba & DMA_BIT_MASK(32))); 4527 IXGBE_WRITE_REG(hw, IXGBE_RDBAH(reg_idx), (rdba >> 32)); 4528 IXGBE_WRITE_REG(hw, IXGBE_RDLEN(reg_idx), 4529 ring->count * sizeof(union ixgbe_adv_rx_desc)); 4530 /* Force flushing of IXGBE_RDLEN to prevent MDD */ 4531 IXGBE_WRITE_FLUSH(hw); 4532 4533 IXGBE_WRITE_REG(hw, IXGBE_RDH(reg_idx), 0); 4534 IXGBE_WRITE_REG(hw, IXGBE_RDT(reg_idx), 0); 4535 ring->tail = adapter->io_addr + IXGBE_RDT(reg_idx); 4536 4537 ixgbe_configure_srrctl(adapter, ring); 4538 ixgbe_configure_rscctl(adapter, ring); 4539 4540 if (hw->mac.type == ixgbe_mac_82598EB) { 4541 /* 4542 * enable cache line friendly hardware writes: 4543 * PTHRESH=32 descriptors (half the internal cache), 4544 * this also removes ugly rx_no_buffer_count increment 4545 * HTHRESH=4 descriptors (to minimize latency on fetch) 4546 * WTHRESH=8 burst writeback up to two cache lines 4547 */ 4548 rxdctl &= ~0x3FFFFF; 4549 rxdctl |= 0x080420; 4550#if (PAGE_SIZE < 8192) 4551 /* RXDCTL.RLPML does not work on 82599 */ 4552 } else if (hw->mac.type != ixgbe_mac_82599EB) { 4553 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4554 IXGBE_RXDCTL_RLPML_EN); 4555 4556 /* Limit the maximum frame size so we don't overrun the skb. 4557 * This can happen in SRIOV mode when the MTU of the VF is 4558 * higher than the MTU of the PF. 4559 */ 4560 if (ring_uses_build_skb(ring) && 4561 !test_bit(__IXGBE_RX_3K_BUFFER, &ring->state)) 4562 rxdctl |= IXGBE_MAX_2K_FRAME_BUILD_SKB | 4563 IXGBE_RXDCTL_RLPML_EN; 4564#endif 4565 } 4566 4567 ring->rx_offset = ixgbe_rx_offset(ring); 4568 4569 if (ring->xsk_pool && hw->mac.type != ixgbe_mac_82599EB) { 4570 u32 xsk_buf_len = xsk_pool_get_rx_frame_size(ring->xsk_pool); 4571 4572 rxdctl &= ~(IXGBE_RXDCTL_RLPMLMASK | 4573 IXGBE_RXDCTL_RLPML_EN); 4574 rxdctl |= xsk_buf_len | IXGBE_RXDCTL_RLPML_EN; 4575 4576 ring->rx_buf_len = xsk_buf_len; 4577 } 4578 4579 /* initialize rx_buffer_info */ 4580 memset(ring->rx_buffer_info, 0, 4581 sizeof(struct ixgbe_rx_buffer) * ring->count); 4582 4583 /* initialize Rx descriptor 0 */ 4584 rx_desc = IXGBE_RX_DESC(ring, 0); 4585 rx_desc->wb.upper.length = 0; 4586 4587 /* enable receive descriptor ring */ 4588 rxdctl |= IXGBE_RXDCTL_ENABLE; 4589 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 4590 4591 ixgbe_rx_desc_queue_enable(adapter, ring); 4592 if (ring->xsk_pool) 4593 ixgbe_alloc_rx_buffers_zc(ring, ixgbe_desc_unused(ring)); 4594 else 4595 ixgbe_alloc_rx_buffers(ring, ixgbe_desc_unused(ring)); 4596} 4597 4598static void ixgbe_setup_psrtype(struct ixgbe_adapter *adapter) 4599{ 4600 struct ixgbe_hw *hw = &adapter->hw; 4601 int rss_i = adapter->ring_feature[RING_F_RSS].indices; 4602 u16 pool = adapter->num_rx_pools; 4603 4604 /* PSRTYPE must be initialized in non 82598 adapters */ 4605 u32 psrtype = IXGBE_PSRTYPE_TCPHDR | 4606 IXGBE_PSRTYPE_UDPHDR | 4607 IXGBE_PSRTYPE_IPV4HDR | 4608 IXGBE_PSRTYPE_L2HDR | 4609 IXGBE_PSRTYPE_IPV6HDR; 4610 4611 if (hw->mac.type == ixgbe_mac_82598EB) 4612 return; 4613 4614 if (rss_i > 3) 4615 psrtype |= 2u << 29; 4616 else if (rss_i > 1) 4617 psrtype |= 1u << 29; 4618 4619 while (pool--) 4620 IXGBE_WRITE_REG(hw, IXGBE_PSRTYPE(VMDQ_P(pool)), psrtype); 4621} 4622 4623static void ixgbe_configure_virtualization(struct ixgbe_adapter *adapter) 4624{ 4625 struct ixgbe_hw *hw = &adapter->hw; 4626 u16 pool = adapter->num_rx_pools; 4627 u32 reg_offset, vf_shift, vmolr; 4628 u32 gcr_ext, vmdctl; 4629 int i; 4630 4631 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 4632 return; 4633 4634 vmdctl = IXGBE_READ_REG(hw, IXGBE_VT_CTL); 4635 vmdctl |= IXGBE_VMD_CTL_VMDQ_EN; 4636 vmdctl &= ~IXGBE_VT_CTL_POOL_MASK; 4637 vmdctl |= VMDQ_P(0) << IXGBE_VT_CTL_POOL_SHIFT; 4638 vmdctl |= IXGBE_VT_CTL_REPLEN; 4639 IXGBE_WRITE_REG(hw, IXGBE_VT_CTL, vmdctl); 4640 4641 /* accept untagged packets until a vlan tag is 4642 * specifically set for the VMDQ queue/pool 4643 */ 4644 vmolr = IXGBE_VMOLR_AUPE; 4645 while (pool--) 4646 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(pool)), vmolr); 4647 4648 vf_shift = VMDQ_P(0) % 32; 4649 reg_offset = (VMDQ_P(0) >= 32) ? 1 : 0; 4650 4651 /* Enable only the PF's pool for Tx/Rx */ 4652 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset), GENMASK(31, vf_shift)); 4653 IXGBE_WRITE_REG(hw, IXGBE_VFRE(reg_offset ^ 1), reg_offset - 1); 4654 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset), GENMASK(31, vf_shift)); 4655 IXGBE_WRITE_REG(hw, IXGBE_VFTE(reg_offset ^ 1), reg_offset - 1); 4656 if (adapter->bridge_mode == BRIDGE_MODE_VEB) 4657 IXGBE_WRITE_REG(hw, IXGBE_PFDTXGSWC, IXGBE_PFDTXGSWC_VT_LBEN); 4658 4659 /* Map PF MAC address in RAR Entry 0 to first pool following VFs */ 4660 hw->mac.ops.set_vmdq(hw, 0, VMDQ_P(0)); 4661 4662 /* clear VLAN promisc flag so VFTA will be updated if necessary */ 4663 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 4664 4665 /* 4666 * Set up VF register offsets for selected VT Mode, 4667 * i.e. 32 or 64 VFs for SR-IOV 4668 */ 4669 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 4670 case IXGBE_82599_VMDQ_8Q_MASK: 4671 gcr_ext = IXGBE_GCR_EXT_VT_MODE_16; 4672 break; 4673 case IXGBE_82599_VMDQ_4Q_MASK: 4674 gcr_ext = IXGBE_GCR_EXT_VT_MODE_32; 4675 break; 4676 default: 4677 gcr_ext = IXGBE_GCR_EXT_VT_MODE_64; 4678 break; 4679 } 4680 4681 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext); 4682 4683 for (i = 0; i < adapter->num_vfs; i++) { 4684 /* configure spoof checking */ 4685 ixgbe_ndo_set_vf_spoofchk(adapter->netdev, i, 4686 adapter->vfinfo[i].spoofchk_enabled); 4687 4688 /* Enable/Disable RSS query feature */ 4689 ixgbe_ndo_set_vf_rss_query_en(adapter->netdev, i, 4690 adapter->vfinfo[i].rss_query_enabled); 4691 } 4692} 4693 4694static void ixgbe_set_rx_buffer_len(struct ixgbe_adapter *adapter) 4695{ 4696 struct ixgbe_hw *hw = &adapter->hw; 4697 struct net_device *netdev = adapter->netdev; 4698 int max_frame = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 4699 struct ixgbe_ring *rx_ring; 4700 int i; 4701 u32 mhadd, hlreg0; 4702 4703#ifdef IXGBE_FCOE 4704 /* adjust max frame to be able to do baby jumbo for FCoE */ 4705 if ((adapter->flags & IXGBE_FLAG_FCOE_ENABLED) && 4706 (max_frame < IXGBE_FCOE_JUMBO_FRAME_SIZE)) 4707 max_frame = IXGBE_FCOE_JUMBO_FRAME_SIZE; 4708 4709#endif /* IXGBE_FCOE */ 4710 4711 /* adjust max frame to be at least the size of a standard frame */ 4712 if (max_frame < (ETH_FRAME_LEN + ETH_FCS_LEN)) 4713 max_frame = (ETH_FRAME_LEN + ETH_FCS_LEN); 4714 4715 mhadd = IXGBE_READ_REG(hw, IXGBE_MHADD); 4716 if (max_frame != (mhadd >> IXGBE_MHADD_MFS_SHIFT)) { 4717 mhadd &= ~IXGBE_MHADD_MFS_MASK; 4718 mhadd |= max_frame << IXGBE_MHADD_MFS_SHIFT; 4719 4720 IXGBE_WRITE_REG(hw, IXGBE_MHADD, mhadd); 4721 } 4722 4723 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0); 4724 /* set jumbo enable since MHADD.MFS is keeping size locked at max_frame */ 4725 hlreg0 |= IXGBE_HLREG0_JUMBOEN; 4726 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0); 4727 4728 /* 4729 * Setup the HW Rx Head and Tail Descriptor Pointers and 4730 * the Base and Length of the Rx Descriptor Ring 4731 */ 4732 for (i = 0; i < adapter->num_rx_queues; i++) { 4733 rx_ring = adapter->rx_ring[i]; 4734 4735 clear_ring_rsc_enabled(rx_ring); 4736 clear_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4737 clear_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4738 4739 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4740 set_ring_rsc_enabled(rx_ring); 4741 4742 if (test_bit(__IXGBE_RX_FCOE, &rx_ring->state)) 4743 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4744 4745 if (adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) 4746 continue; 4747 4748 set_bit(__IXGBE_RX_BUILD_SKB_ENABLED, &rx_ring->state); 4749 4750#if (PAGE_SIZE < 8192) 4751 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 4752 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4753 4754 if (IXGBE_2K_TOO_SMALL_WITH_PADDING || 4755 (max_frame > (ETH_FRAME_LEN + ETH_FCS_LEN))) 4756 set_bit(__IXGBE_RX_3K_BUFFER, &rx_ring->state); 4757#endif 4758 } 4759} 4760 4761static void ixgbe_setup_rdrxctl(struct ixgbe_adapter *adapter) 4762{ 4763 struct ixgbe_hw *hw = &adapter->hw; 4764 u32 rdrxctl = IXGBE_READ_REG(hw, IXGBE_RDRXCTL); 4765 4766 switch (hw->mac.type) { 4767 case ixgbe_mac_82598EB: 4768 /* 4769 * For VMDq support of different descriptor types or 4770 * buffer sizes through the use of multiple SRRCTL 4771 * registers, RDRXCTL.MVMEN must be set to 1 4772 * 4773 * also, the manual doesn't mention it clearly but DCA hints 4774 * will only use queue 0's tags unless this bit is set. Side 4775 * effects of setting this bit are only that SRRCTL must be 4776 * fully programmed [0..15] 4777 */ 4778 rdrxctl |= IXGBE_RDRXCTL_MVMEN; 4779 break; 4780 case ixgbe_mac_X550: 4781 case ixgbe_mac_X550EM_x: 4782 case ixgbe_mac_x550em_a: 4783 case ixgbe_mac_e610: 4784 if (adapter->num_vfs) 4785 rdrxctl |= IXGBE_RDRXCTL_PSP; 4786 fallthrough; 4787 case ixgbe_mac_82599EB: 4788 case ixgbe_mac_X540: 4789 /* Disable RSC for ACK packets */ 4790 IXGBE_WRITE_REG(hw, IXGBE_RSCDBU, 4791 (IXGBE_RSCDBU_RSCACKDIS | IXGBE_READ_REG(hw, IXGBE_RSCDBU))); 4792 rdrxctl &= ~IXGBE_RDRXCTL_RSCFRSTSIZE; 4793 /* hardware requires some bits to be set by default */ 4794 rdrxctl |= (IXGBE_RDRXCTL_RSCACKC | IXGBE_RDRXCTL_FCOE_WRFIX); 4795 rdrxctl |= IXGBE_RDRXCTL_CRCSTRIP; 4796 break; 4797 default: 4798 /* We should do nothing since we don't know this hardware */ 4799 return; 4800 } 4801 4802 IXGBE_WRITE_REG(hw, IXGBE_RDRXCTL, rdrxctl); 4803} 4804 4805/** 4806 * ixgbe_configure_rx - Configure 8259x Receive Unit after Reset 4807 * @adapter: board private structure 4808 * 4809 * Configure the Rx unit of the MAC after a reset. 4810 **/ 4811static void ixgbe_configure_rx(struct ixgbe_adapter *adapter) 4812{ 4813 struct ixgbe_hw *hw = &adapter->hw; 4814 int i; 4815 u32 rxctrl, rfctl; 4816 4817 /* disable receives while setting up the descriptors */ 4818 hw->mac.ops.disable_rx(hw); 4819 4820 ixgbe_setup_psrtype(adapter); 4821 ixgbe_setup_rdrxctl(adapter); 4822 4823 /* RSC Setup */ 4824 rfctl = IXGBE_READ_REG(hw, IXGBE_RFCTL); 4825 rfctl &= ~IXGBE_RFCTL_RSC_DIS; 4826 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) 4827 rfctl |= IXGBE_RFCTL_RSC_DIS; 4828 4829 /* disable NFS filtering */ 4830 rfctl |= (IXGBE_RFCTL_NFSW_DIS | IXGBE_RFCTL_NFSR_DIS); 4831 IXGBE_WRITE_REG(hw, IXGBE_RFCTL, rfctl); 4832 4833 /* Program registers for the distribution of queues */ 4834 ixgbe_setup_mrqc(adapter); 4835 4836 /* set_rx_buffer_len must be called before ring initialization */ 4837 ixgbe_set_rx_buffer_len(adapter); 4838 4839 /* 4840 * Setup the HW Rx Head and Tail Descriptor Pointers and 4841 * the Base and Length of the Rx Descriptor Ring 4842 */ 4843 for (i = 0; i < adapter->num_rx_queues; i++) 4844 ixgbe_configure_rx_ring(adapter, adapter->rx_ring[i]); 4845 4846 rxctrl = IXGBE_READ_REG(hw, IXGBE_RXCTRL); 4847 /* disable drop enable for 82598 parts */ 4848 if (hw->mac.type == ixgbe_mac_82598EB) 4849 rxctrl |= IXGBE_RXCTRL_DMBYPS; 4850 4851 /* enable all receives */ 4852 rxctrl |= IXGBE_RXCTRL_RXEN; 4853 hw->mac.ops.enable_rx_dma(hw, rxctrl); 4854} 4855 4856static int ixgbe_vlan_rx_add_vid(struct net_device *netdev, 4857 __be16 proto, u16 vid) 4858{ 4859 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 4860 struct ixgbe_hw *hw = &adapter->hw; 4861 4862 /* add VID to filter table */ 4863 if (!vid || !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4864 hw->mac.ops.set_vfta(&adapter->hw, vid, VMDQ_P(0), true, !!vid); 4865 4866 set_bit(vid, adapter->active_vlans); 4867 4868 return 0; 4869} 4870 4871static int ixgbe_find_vlvf_entry(struct ixgbe_hw *hw, u32 vlan) 4872{ 4873 u32 vlvf; 4874 int idx; 4875 4876 /* short cut the special case */ 4877 if (vlan == 0) 4878 return 0; 4879 4880 /* Search for the vlan id in the VLVF entries */ 4881 for (idx = IXGBE_VLVF_ENTRIES; --idx;) { 4882 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(idx)); 4883 if ((vlvf & VLAN_VID_MASK) == vlan) 4884 break; 4885 } 4886 4887 return idx; 4888} 4889 4890void ixgbe_update_pf_promisc_vlvf(struct ixgbe_adapter *adapter, u32 vid) 4891{ 4892 struct ixgbe_hw *hw = &adapter->hw; 4893 u32 bits, word; 4894 int idx; 4895 4896 idx = ixgbe_find_vlvf_entry(hw, vid); 4897 if (!idx) 4898 return; 4899 4900 /* See if any other pools are set for this VLAN filter 4901 * entry other than the PF. 4902 */ 4903 word = idx * 2 + (VMDQ_P(0) / 32); 4904 bits = ~BIT(VMDQ_P(0) % 32); 4905 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 4906 4907 /* Disable the filter so this falls into the default pool. */ 4908 if (!bits && !IXGBE_READ_REG(hw, IXGBE_VLVFB(word ^ 1))) { 4909 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4910 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), 0); 4911 IXGBE_WRITE_REG(hw, IXGBE_VLVF(idx), 0); 4912 } 4913} 4914 4915static int ixgbe_vlan_rx_kill_vid(struct net_device *netdev, 4916 __be16 proto, u16 vid) 4917{ 4918 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 4919 struct ixgbe_hw *hw = &adapter->hw; 4920 4921 /* remove VID from filter table */ 4922 if (vid && !(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 4923 hw->mac.ops.set_vfta(hw, vid, VMDQ_P(0), false, true); 4924 4925 clear_bit(vid, adapter->active_vlans); 4926 4927 return 0; 4928} 4929 4930/** 4931 * ixgbe_vlan_strip_disable - helper to disable hw vlan stripping 4932 * @adapter: driver data 4933 */ 4934static void ixgbe_vlan_strip_disable(struct ixgbe_adapter *adapter) 4935{ 4936 struct ixgbe_hw *hw = &adapter->hw; 4937 u32 vlnctrl; 4938 int i, j; 4939 4940 switch (hw->mac.type) { 4941 case ixgbe_mac_82598EB: 4942 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4943 vlnctrl &= ~IXGBE_VLNCTRL_VME; 4944 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4945 break; 4946 case ixgbe_mac_82599EB: 4947 case ixgbe_mac_X540: 4948 case ixgbe_mac_X550: 4949 case ixgbe_mac_X550EM_x: 4950 case ixgbe_mac_x550em_a: 4951 case ixgbe_mac_e610: 4952 for (i = 0; i < adapter->num_rx_queues; i++) { 4953 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4954 4955 if (!netif_is_ixgbe(ring->netdev)) 4956 continue; 4957 4958 j = ring->reg_idx; 4959 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4960 vlnctrl &= ~IXGBE_RXDCTL_VME; 4961 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 4962 } 4963 break; 4964 default: 4965 break; 4966 } 4967} 4968 4969/** 4970 * ixgbe_vlan_strip_enable - helper to enable hw vlan stripping 4971 * @adapter: driver data 4972 */ 4973static void ixgbe_vlan_strip_enable(struct ixgbe_adapter *adapter) 4974{ 4975 struct ixgbe_hw *hw = &adapter->hw; 4976 u32 vlnctrl; 4977 int i, j; 4978 4979 switch (hw->mac.type) { 4980 case ixgbe_mac_82598EB: 4981 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 4982 vlnctrl |= IXGBE_VLNCTRL_VME; 4983 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 4984 break; 4985 case ixgbe_mac_82599EB: 4986 case ixgbe_mac_X540: 4987 case ixgbe_mac_X550: 4988 case ixgbe_mac_X550EM_x: 4989 case ixgbe_mac_x550em_a: 4990 case ixgbe_mac_e610: 4991 for (i = 0; i < adapter->num_rx_queues; i++) { 4992 struct ixgbe_ring *ring = adapter->rx_ring[i]; 4993 4994 if (!netif_is_ixgbe(ring->netdev)) 4995 continue; 4996 4997 j = ring->reg_idx; 4998 vlnctrl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(j)); 4999 vlnctrl |= IXGBE_RXDCTL_VME; 5000 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(j), vlnctrl); 5001 } 5002 break; 5003 default: 5004 break; 5005 } 5006} 5007 5008static void ixgbe_vlan_promisc_enable(struct ixgbe_adapter *adapter) 5009{ 5010 struct ixgbe_hw *hw = &adapter->hw; 5011 u32 vlnctrl, i; 5012 5013 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 5014 5015 if (adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) { 5016 /* For VMDq and SR-IOV we must leave VLAN filtering enabled */ 5017 vlnctrl |= IXGBE_VLNCTRL_VFE; 5018 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 5019 } else { 5020 vlnctrl &= ~IXGBE_VLNCTRL_VFE; 5021 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 5022 return; 5023 } 5024 5025 /* Nothing to do for 82598 */ 5026 if (hw->mac.type == ixgbe_mac_82598EB) 5027 return; 5028 5029 /* We are already in VLAN promisc, nothing to do */ 5030 if (adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC) 5031 return; 5032 5033 /* Set flag so we don't redo unnecessary work */ 5034 adapter->flags2 |= IXGBE_FLAG2_VLAN_PROMISC; 5035 5036 /* Add PF to all active pools */ 5037 for (i = IXGBE_VLVF_ENTRIES; --i;) { 5038 u32 reg_offset = IXGBE_VLVFB(i * 2 + VMDQ_P(0) / 32); 5039 u32 vlvfb = IXGBE_READ_REG(hw, reg_offset); 5040 5041 vlvfb |= BIT(VMDQ_P(0) % 32); 5042 IXGBE_WRITE_REG(hw, reg_offset, vlvfb); 5043 } 5044 5045 /* Set all bits in the VLAN filter table array */ 5046 for (i = hw->mac.vft_size; i--;) 5047 IXGBE_WRITE_REG(hw, IXGBE_VFTA(i), ~0U); 5048} 5049 5050#define VFTA_BLOCK_SIZE 8 5051static void ixgbe_scrub_vfta(struct ixgbe_adapter *adapter, u32 vfta_offset) 5052{ 5053 struct ixgbe_hw *hw = &adapter->hw; 5054 u32 vfta[VFTA_BLOCK_SIZE] = { 0 }; 5055 u32 vid_start = vfta_offset * 32; 5056 u32 vid_end = vid_start + (VFTA_BLOCK_SIZE * 32); 5057 u32 i, vid, word, bits; 5058 5059 for (i = IXGBE_VLVF_ENTRIES; --i;) { 5060 u32 vlvf = IXGBE_READ_REG(hw, IXGBE_VLVF(i)); 5061 5062 /* pull VLAN ID from VLVF */ 5063 vid = vlvf & VLAN_VID_MASK; 5064 5065 /* only concern ourselves with a certain range */ 5066 if (vid < vid_start || vid >= vid_end) 5067 continue; 5068 5069 if (vlvf) { 5070 /* record VLAN ID in VFTA */ 5071 vfta[(vid - vid_start) / 32] |= BIT(vid % 32); 5072 5073 /* if PF is part of this then continue */ 5074 if (test_bit(vid, adapter->active_vlans)) 5075 continue; 5076 } 5077 5078 /* remove PF from the pool */ 5079 word = i * 2 + VMDQ_P(0) / 32; 5080 bits = ~BIT(VMDQ_P(0) % 32); 5081 bits &= IXGBE_READ_REG(hw, IXGBE_VLVFB(word)); 5082 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(word), bits); 5083 } 5084 5085 /* extract values from active_vlans and write back to VFTA */ 5086 for (i = VFTA_BLOCK_SIZE; i--;) { 5087 vid = (vfta_offset + i) * 32; 5088 word = vid / BITS_PER_LONG; 5089 bits = vid % BITS_PER_LONG; 5090 5091 vfta[i] |= adapter->active_vlans[word] >> bits; 5092 5093 IXGBE_WRITE_REG(hw, IXGBE_VFTA(vfta_offset + i), vfta[i]); 5094 } 5095} 5096 5097static void ixgbe_vlan_promisc_disable(struct ixgbe_adapter *adapter) 5098{ 5099 struct ixgbe_hw *hw = &adapter->hw; 5100 u32 vlnctrl, i; 5101 5102 /* Set VLAN filtering to enabled */ 5103 vlnctrl = IXGBE_READ_REG(hw, IXGBE_VLNCTRL); 5104 vlnctrl |= IXGBE_VLNCTRL_VFE; 5105 IXGBE_WRITE_REG(hw, IXGBE_VLNCTRL, vlnctrl); 5106 5107 if (!(adapter->flags & IXGBE_FLAG_VMDQ_ENABLED) || 5108 hw->mac.type == ixgbe_mac_82598EB) 5109 return; 5110 5111 /* We are not in VLAN promisc, nothing to do */ 5112 if (!(adapter->flags2 & IXGBE_FLAG2_VLAN_PROMISC)) 5113 return; 5114 5115 /* Set flag so we don't redo unnecessary work */ 5116 adapter->flags2 &= ~IXGBE_FLAG2_VLAN_PROMISC; 5117 5118 for (i = 0; i < hw->mac.vft_size; i += VFTA_BLOCK_SIZE) 5119 ixgbe_scrub_vfta(adapter, i); 5120} 5121 5122static void ixgbe_restore_vlan(struct ixgbe_adapter *adapter) 5123{ 5124 u16 vid = 1; 5125 5126 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), 0); 5127 5128 for_each_set_bit_from(vid, adapter->active_vlans, VLAN_N_VID) 5129 ixgbe_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); 5130} 5131 5132/** 5133 * ixgbe_write_mc_addr_list - write multicast addresses to MTA 5134 * @netdev: network interface device structure 5135 * 5136 * Writes multicast address list to the MTA hash table. 5137 * Returns: -ENOMEM on failure 5138 * 0 on no addresses written 5139 * X on writing X addresses to MTA 5140 **/ 5141static int ixgbe_write_mc_addr_list(struct net_device *netdev) 5142{ 5143 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5144 struct ixgbe_hw *hw = &adapter->hw; 5145 5146 if (!netif_running(netdev)) 5147 return 0; 5148 5149 if (hw->mac.ops.update_mc_addr_list) 5150 hw->mac.ops.update_mc_addr_list(hw, netdev); 5151 else 5152 return -ENOMEM; 5153 5154#ifdef CONFIG_PCI_IOV 5155 ixgbe_restore_vf_multicasts(adapter); 5156#endif 5157 5158 return netdev_mc_count(netdev); 5159} 5160 5161#ifdef CONFIG_PCI_IOV 5162void ixgbe_full_sync_mac_table(struct ixgbe_adapter *adapter) 5163{ 5164 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5165 struct ixgbe_hw *hw = &adapter->hw; 5166 int i; 5167 5168 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5169 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 5170 5171 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 5172 hw->mac.ops.set_rar(hw, i, 5173 mac_table->addr, 5174 mac_table->pool, 5175 IXGBE_RAH_AV); 5176 else 5177 hw->mac.ops.clear_rar(hw, i); 5178 } 5179} 5180 5181#endif 5182static void ixgbe_sync_mac_table(struct ixgbe_adapter *adapter) 5183{ 5184 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5185 struct ixgbe_hw *hw = &adapter->hw; 5186 int i; 5187 5188 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5189 if (!(mac_table->state & IXGBE_MAC_STATE_MODIFIED)) 5190 continue; 5191 5192 mac_table->state &= ~IXGBE_MAC_STATE_MODIFIED; 5193 5194 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 5195 hw->mac.ops.set_rar(hw, i, 5196 mac_table->addr, 5197 mac_table->pool, 5198 IXGBE_RAH_AV); 5199 else 5200 hw->mac.ops.clear_rar(hw, i); 5201 } 5202} 5203 5204static void ixgbe_flush_sw_mac_table(struct ixgbe_adapter *adapter) 5205{ 5206 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5207 struct ixgbe_hw *hw = &adapter->hw; 5208 int i; 5209 5210 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5211 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 5212 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 5213 } 5214 5215 ixgbe_sync_mac_table(adapter); 5216} 5217 5218static int ixgbe_available_rars(struct ixgbe_adapter *adapter, u16 pool) 5219{ 5220 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5221 struct ixgbe_hw *hw = &adapter->hw; 5222 int i, count = 0; 5223 5224 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5225 /* do not count default RAR as available */ 5226 if (mac_table->state & IXGBE_MAC_STATE_DEFAULT) 5227 continue; 5228 5229 /* only count unused and addresses that belong to us */ 5230 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) { 5231 if (mac_table->pool != pool) 5232 continue; 5233 } 5234 5235 count++; 5236 } 5237 5238 return count; 5239} 5240 5241/* this function destroys the first RAR entry */ 5242static void ixgbe_mac_set_default_filter(struct ixgbe_adapter *adapter) 5243{ 5244 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5245 struct ixgbe_hw *hw = &adapter->hw; 5246 5247 memcpy(&mac_table->addr, hw->mac.addr, ETH_ALEN); 5248 mac_table->pool = VMDQ_P(0); 5249 5250 mac_table->state = IXGBE_MAC_STATE_DEFAULT | IXGBE_MAC_STATE_IN_USE; 5251 5252 hw->mac.ops.set_rar(hw, 0, mac_table->addr, mac_table->pool, 5253 IXGBE_RAH_AV); 5254} 5255 5256int ixgbe_add_mac_filter(struct ixgbe_adapter *adapter, 5257 const u8 *addr, u16 pool) 5258{ 5259 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5260 struct ixgbe_hw *hw = &adapter->hw; 5261 int i; 5262 5263 if (is_zero_ether_addr(addr)) 5264 return -EINVAL; 5265 5266 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5267 if (mac_table->state & IXGBE_MAC_STATE_IN_USE) 5268 continue; 5269 5270 ether_addr_copy(mac_table->addr, addr); 5271 mac_table->pool = pool; 5272 5273 mac_table->state |= IXGBE_MAC_STATE_MODIFIED | 5274 IXGBE_MAC_STATE_IN_USE; 5275 5276 ixgbe_sync_mac_table(adapter); 5277 5278 return i; 5279 } 5280 5281 return -ENOMEM; 5282} 5283 5284int ixgbe_del_mac_filter(struct ixgbe_adapter *adapter, 5285 const u8 *addr, u16 pool) 5286{ 5287 struct ixgbe_mac_addr *mac_table = &adapter->mac_table[0]; 5288 struct ixgbe_hw *hw = &adapter->hw; 5289 int i; 5290 5291 if (is_zero_ether_addr(addr)) 5292 return -EINVAL; 5293 5294 /* search table for addr, if found clear IN_USE flag and sync */ 5295 for (i = 0; i < hw->mac.num_rar_entries; i++, mac_table++) { 5296 /* we can only delete an entry if it is in use */ 5297 if (!(mac_table->state & IXGBE_MAC_STATE_IN_USE)) 5298 continue; 5299 /* we only care about entries that belong to the given pool */ 5300 if (mac_table->pool != pool) 5301 continue; 5302 /* we only care about a specific MAC address */ 5303 if (!ether_addr_equal(addr, mac_table->addr)) 5304 continue; 5305 5306 mac_table->state |= IXGBE_MAC_STATE_MODIFIED; 5307 mac_table->state &= ~IXGBE_MAC_STATE_IN_USE; 5308 5309 ixgbe_sync_mac_table(adapter); 5310 5311 return 0; 5312 } 5313 5314 return -ENOMEM; 5315} 5316 5317static int ixgbe_uc_sync(struct net_device *netdev, const unsigned char *addr) 5318{ 5319 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5320 int ret; 5321 5322 ret = ixgbe_add_mac_filter(adapter, addr, VMDQ_P(0)); 5323 5324 return min_t(int, ret, 0); 5325} 5326 5327static int ixgbe_uc_unsync(struct net_device *netdev, const unsigned char *addr) 5328{ 5329 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5330 5331 ixgbe_del_mac_filter(adapter, addr, VMDQ_P(0)); 5332 5333 return 0; 5334} 5335 5336/** 5337 * ixgbe_set_rx_mode - Unicast, Multicast and Promiscuous mode set 5338 * @netdev: network interface device structure 5339 * 5340 * The set_rx_method entry point is called whenever the unicast/multicast 5341 * address list or the network interface flags are updated. This routine is 5342 * responsible for configuring the hardware for proper unicast, multicast and 5343 * promiscuous mode. 5344 **/ 5345void ixgbe_set_rx_mode(struct net_device *netdev) 5346{ 5347 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 5348 struct ixgbe_hw *hw = &adapter->hw; 5349 u32 fctrl, vmolr = IXGBE_VMOLR_BAM | IXGBE_VMOLR_AUPE; 5350 netdev_features_t features = netdev->features; 5351 int count; 5352 5353 /* Check for Promiscuous and All Multicast modes */ 5354 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 5355 5356 /* set all bits that we expect to always be set */ 5357 fctrl &= ~IXGBE_FCTRL_SBP; /* disable store-bad-packets */ 5358 fctrl |= IXGBE_FCTRL_BAM; 5359 fctrl |= IXGBE_FCTRL_DPF; /* discard pause frames when FC enabled */ 5360 fctrl |= IXGBE_FCTRL_PMCF; 5361 5362 /* clear the bits we are changing the status of */ 5363 fctrl &= ~(IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 5364 if (netdev->flags & IFF_PROMISC) { 5365 hw->addr_ctrl.user_set_promisc = true; 5366 fctrl |= (IXGBE_FCTRL_UPE | IXGBE_FCTRL_MPE); 5367 vmolr |= IXGBE_VMOLR_MPE; 5368 features &= ~NETIF_F_HW_VLAN_CTAG_FILTER; 5369 } else { 5370 if (netdev->flags & IFF_ALLMULTI) { 5371 fctrl |= IXGBE_FCTRL_MPE; 5372 vmolr |= IXGBE_VMOLR_MPE; 5373 } 5374 hw->addr_ctrl.user_set_promisc = false; 5375 } 5376 5377 /* 5378 * Write addresses to available RAR registers, if there is not 5379 * sufficient space to store all the addresses then enable 5380 * unicast promiscuous mode 5381 */ 5382 if (__dev_uc_sync(netdev, ixgbe_uc_sync, ixgbe_uc_unsync)) { 5383 fctrl |= IXGBE_FCTRL_UPE; 5384 vmolr |= IXGBE_VMOLR_ROPE; 5385 } 5386 5387 /* Write addresses to the MTA, if the attempt fails 5388 * then we should just turn on promiscuous mode so 5389 * that we can at least receive multicast traffic 5390 */ 5391 count = ixgbe_write_mc_addr_list(netdev); 5392 if (count < 0) { 5393 fctrl |= IXGBE_FCTRL_MPE; 5394 vmolr |= IXGBE_VMOLR_MPE; 5395 } else if (count) { 5396 vmolr |= IXGBE_VMOLR_ROMPE; 5397 } 5398 5399 if (hw->mac.type != ixgbe_mac_82598EB) { 5400 vmolr |= IXGBE_READ_REG(hw, IXGBE_VMOLR(VMDQ_P(0))) & 5401 ~(IXGBE_VMOLR_MPE | IXGBE_VMOLR_ROMPE | 5402 IXGBE_VMOLR_ROPE); 5403 IXGBE_WRITE_REG(hw, IXGBE_VMOLR(VMDQ_P(0)), vmolr); 5404 } 5405 5406 /* This is useful for sniffing bad packets. */ 5407 if (features & NETIF_F_RXALL) { 5408 /* UPE and MPE will be handled by normal PROMISC logic 5409 * in e1000e_set_rx_mode */ 5410 fctrl |= (IXGBE_FCTRL_SBP | /* Receive bad packets */ 5411 IXGBE_FCTRL_BAM | /* RX All Bcast Pkts */ 5412 IXGBE_FCTRL_PMCF); /* RX All MAC Ctrl Pkts */ 5413 5414 fctrl &= ~(IXGBE_FCTRL_DPF); 5415 /* NOTE: VLAN filtering is disabled by setting PROMISC */ 5416 } 5417 5418 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 5419 5420 if (features & NETIF_F_HW_VLAN_CTAG_RX) 5421 ixgbe_vlan_strip_enable(adapter); 5422 else 5423 ixgbe_vlan_strip_disable(adapter); 5424 5425 if (features & NETIF_F_HW_VLAN_CTAG_FILTER) 5426 ixgbe_vlan_promisc_disable(adapter); 5427 else 5428 ixgbe_vlan_promisc_enable(adapter); 5429} 5430 5431static void ixgbe_napi_enable_all(struct ixgbe_adapter *adapter) 5432{ 5433 int q_idx; 5434 5435 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 5436 napi_enable(&adapter->q_vector[q_idx]->napi); 5437} 5438 5439static void ixgbe_napi_disable_all(struct ixgbe_adapter *adapter) 5440{ 5441 int q_idx; 5442 5443 for (q_idx = 0; q_idx < adapter->num_q_vectors; q_idx++) 5444 napi_disable(&adapter->q_vector[q_idx]->napi); 5445} 5446 5447static int ixgbe_udp_tunnel_sync(struct net_device *dev, unsigned int table) 5448{ 5449 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 5450 struct ixgbe_hw *hw = &adapter->hw; 5451 struct udp_tunnel_info ti; 5452 5453 udp_tunnel_nic_get_port(dev, table, 0, &ti); 5454 if (ti.type == UDP_TUNNEL_TYPE_VXLAN) 5455 adapter->vxlan_port = ti.port; 5456 else 5457 adapter->geneve_port = ti.port; 5458 5459 IXGBE_WRITE_REG(hw, IXGBE_VXLANCTRL, 5460 ntohs(adapter->vxlan_port) | 5461 ntohs(adapter->geneve_port) << 5462 IXGBE_VXLANCTRL_GENEVE_UDPPORT_SHIFT); 5463 return 0; 5464} 5465 5466static const struct udp_tunnel_nic_info ixgbe_udp_tunnels_x550 = { 5467 .sync_table = ixgbe_udp_tunnel_sync, 5468 .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY, 5469 .tables = { 5470 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, 5471 }, 5472}; 5473 5474static const struct udp_tunnel_nic_info ixgbe_udp_tunnels_x550em_a = { 5475 .sync_table = ixgbe_udp_tunnel_sync, 5476 .flags = UDP_TUNNEL_NIC_INFO_IPV4_ONLY, 5477 .tables = { 5478 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_VXLAN, }, 5479 { .n_entries = 1, .tunnel_types = UDP_TUNNEL_TYPE_GENEVE, }, 5480 }, 5481}; 5482 5483#ifdef CONFIG_IXGBE_DCB 5484/** 5485 * ixgbe_configure_dcb - Configure DCB hardware 5486 * @adapter: ixgbe adapter struct 5487 * 5488 * This is called by the driver on open to configure the DCB hardware. 5489 * This is also called by the gennetlink interface when reconfiguring 5490 * the DCB state. 5491 */ 5492static void ixgbe_configure_dcb(struct ixgbe_adapter *adapter) 5493{ 5494 struct ixgbe_hw *hw = &adapter->hw; 5495 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 5496 5497 if (!(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) { 5498 if (hw->mac.type == ixgbe_mac_82598EB) 5499 netif_set_tso_max_size(adapter->netdev, 65536); 5500 return; 5501 } 5502 5503 if (hw->mac.type == ixgbe_mac_82598EB) 5504 netif_set_tso_max_size(adapter->netdev, 32768); 5505 5506#ifdef IXGBE_FCOE 5507 if (adapter->netdev->fcoe_mtu) 5508 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); 5509#endif 5510 5511 /* reconfigure the hardware */ 5512 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) { 5513 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5514 DCB_TX_CONFIG); 5515 ixgbe_dcb_calculate_tc_credits(hw, &adapter->dcb_cfg, max_frame, 5516 DCB_RX_CONFIG); 5517 ixgbe_dcb_hw_config(hw, &adapter->dcb_cfg); 5518 } else if (adapter->ixgbe_ieee_ets && adapter->ixgbe_ieee_pfc) { 5519 ixgbe_dcb_hw_ets(&adapter->hw, 5520 adapter->ixgbe_ieee_ets, 5521 max_frame); 5522 ixgbe_dcb_hw_pfc_config(&adapter->hw, 5523 adapter->ixgbe_ieee_pfc->pfc_en, 5524 adapter->ixgbe_ieee_ets->prio_tc); 5525 } 5526 5527 /* Enable RSS Hash per TC */ 5528 if (hw->mac.type != ixgbe_mac_82598EB) { 5529 u32 msb = 0; 5530 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices - 1; 5531 5532 while (rss_i) { 5533 msb++; 5534 rss_i >>= 1; 5535 } 5536 5537 /* write msb to all 8 TCs in one write */ 5538 IXGBE_WRITE_REG(hw, IXGBE_RQTC, msb * 0x11111111); 5539 } 5540} 5541#endif 5542 5543/* Additional bittime to account for IXGBE framing */ 5544#define IXGBE_ETH_FRAMING 20 5545 5546/** 5547 * ixgbe_hpbthresh - calculate high water mark for flow control 5548 * 5549 * @adapter: board private structure to calculate for 5550 * @pb: packet buffer to calculate 5551 */ 5552static int ixgbe_hpbthresh(struct ixgbe_adapter *adapter, int pb) 5553{ 5554 struct ixgbe_hw *hw = &adapter->hw; 5555 struct net_device *dev = adapter->netdev; 5556 int link, tc, kb, marker; 5557 u32 dv_id, rx_pba; 5558 5559 /* Calculate max LAN frame size */ 5560 tc = link = dev->mtu + ETH_HLEN + ETH_FCS_LEN + IXGBE_ETH_FRAMING; 5561 5562#ifdef IXGBE_FCOE 5563 /* FCoE traffic class uses FCOE jumbo frames */ 5564 if (dev->fcoe_mtu && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE && 5565 (pb == ixgbe_fcoe_get_tc(adapter))) 5566 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5567#endif 5568 5569 /* Calculate delay value for device */ 5570 switch (hw->mac.type) { 5571 case ixgbe_mac_X540: 5572 case ixgbe_mac_X550: 5573 case ixgbe_mac_X550EM_x: 5574 case ixgbe_mac_x550em_a: 5575 case ixgbe_mac_e610: 5576 dv_id = IXGBE_DV_X540(link, tc); 5577 break; 5578 default: 5579 dv_id = IXGBE_DV(link, tc); 5580 break; 5581 } 5582 5583 /* Loopback switch introduces additional latency */ 5584 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 5585 dv_id += IXGBE_B2BT(tc); 5586 5587 /* Delay value is calculated in bit times convert to KB */ 5588 kb = IXGBE_BT2KB(dv_id); 5589 rx_pba = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(pb)) >> 10; 5590 5591 marker = rx_pba - kb; 5592 5593 /* It is possible that the packet buffer is not large enough 5594 * to provide required headroom. In this case throw an error 5595 * to user and a do the best we can. 5596 */ 5597 if (marker < 0) { 5598 e_warn(drv, "Packet Buffer(%i) can not provide enough" 5599 "headroom to support flow control." 5600 "Decrease MTU or number of traffic classes\n", pb); 5601 marker = tc + 1; 5602 } 5603 5604 return marker; 5605} 5606 5607/** 5608 * ixgbe_lpbthresh - calculate low water mark for flow control 5609 * 5610 * @adapter: board private structure to calculate for 5611 * @pb: packet buffer to calculate 5612 */ 5613static int ixgbe_lpbthresh(struct ixgbe_adapter *adapter, int pb) 5614{ 5615 struct ixgbe_hw *hw = &adapter->hw; 5616 struct net_device *dev = adapter->netdev; 5617 int tc; 5618 u32 dv_id; 5619 5620 /* Calculate max LAN frame size */ 5621 tc = dev->mtu + ETH_HLEN + ETH_FCS_LEN; 5622 5623#ifdef IXGBE_FCOE 5624 /* FCoE traffic class uses FCOE jumbo frames */ 5625 if (dev->fcoe_mtu && tc < IXGBE_FCOE_JUMBO_FRAME_SIZE && 5626 (pb == netdev_get_prio_tc_map(dev, adapter->fcoe.up))) 5627 tc = IXGBE_FCOE_JUMBO_FRAME_SIZE; 5628#endif 5629 5630 /* Calculate delay value for device */ 5631 switch (hw->mac.type) { 5632 case ixgbe_mac_X540: 5633 case ixgbe_mac_X550: 5634 case ixgbe_mac_X550EM_x: 5635 case ixgbe_mac_x550em_a: 5636 case ixgbe_mac_e610: 5637 dv_id = IXGBE_LOW_DV_X540(tc); 5638 break; 5639 default: 5640 dv_id = IXGBE_LOW_DV(tc); 5641 break; 5642 } 5643 5644 /* Delay value is calculated in bit times convert to KB */ 5645 return IXGBE_BT2KB(dv_id); 5646} 5647 5648/* 5649 * ixgbe_pbthresh_setup - calculate and setup high low water marks 5650 */ 5651static void ixgbe_pbthresh_setup(struct ixgbe_adapter *adapter) 5652{ 5653 struct ixgbe_hw *hw = &adapter->hw; 5654 int num_tc = adapter->hw_tcs; 5655 int i; 5656 5657 if (!num_tc) 5658 num_tc = 1; 5659 5660 for (i = 0; i < num_tc; i++) { 5661 hw->fc.high_water[i] = ixgbe_hpbthresh(adapter, i); 5662 hw->fc.low_water[i] = ixgbe_lpbthresh(adapter, i); 5663 5664 /* Low water marks must not be larger than high water marks */ 5665 if (hw->fc.low_water[i] > hw->fc.high_water[i]) 5666 hw->fc.low_water[i] = 0; 5667 } 5668 5669 for (; i < MAX_TRAFFIC_CLASS; i++) 5670 hw->fc.high_water[i] = 0; 5671} 5672 5673static void ixgbe_configure_pb(struct ixgbe_adapter *adapter) 5674{ 5675 struct ixgbe_hw *hw = &adapter->hw; 5676 int hdrm; 5677 u8 tc = adapter->hw_tcs; 5678 5679 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE || 5680 adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 5681 hdrm = 32 << adapter->fdir_pballoc; 5682 else 5683 hdrm = 0; 5684 5685 hw->mac.ops.set_rxpba(hw, tc, hdrm, PBA_STRATEGY_EQUAL); 5686 ixgbe_pbthresh_setup(adapter); 5687} 5688 5689static void ixgbe_fdir_filter_restore(struct ixgbe_adapter *adapter) 5690{ 5691 struct ixgbe_hw *hw = &adapter->hw; 5692 struct hlist_node *node2; 5693 struct ixgbe_fdir_filter *filter; 5694 u8 queue; 5695 5696 spin_lock(&adapter->fdir_perfect_lock); 5697 5698 if (!hlist_empty(&adapter->fdir_filter_list)) 5699 ixgbe_fdir_set_input_mask_82599(hw, &adapter->fdir_mask); 5700 5701 hlist_for_each_entry_safe(filter, node2, 5702 &adapter->fdir_filter_list, fdir_node) { 5703 if (filter->action == IXGBE_FDIR_DROP_QUEUE) { 5704 queue = IXGBE_FDIR_DROP_QUEUE; 5705 } else { 5706 u32 ring = ethtool_get_flow_spec_ring(filter->action); 5707 u8 vf = ethtool_get_flow_spec_ring_vf(filter->action); 5708 5709 if (!vf && (ring >= adapter->num_rx_queues)) { 5710 e_err(drv, "FDIR restore failed without VF, ring: %u\n", 5711 ring); 5712 continue; 5713 } else if (vf && 5714 ((vf > adapter->num_vfs) || 5715 ring >= adapter->num_rx_queues_per_pool)) { 5716 e_err(drv, "FDIR restore failed with VF, vf: %hhu, ring: %u\n", 5717 vf, ring); 5718 continue; 5719 } 5720 5721 /* Map the ring onto the absolute queue index */ 5722 if (!vf) 5723 queue = adapter->rx_ring[ring]->reg_idx; 5724 else 5725 queue = ((vf - 1) * 5726 adapter->num_rx_queues_per_pool) + ring; 5727 } 5728 5729 ixgbe_fdir_write_perfect_filter_82599(hw, 5730 &filter->filter, filter->sw_idx, queue); 5731 } 5732 5733 spin_unlock(&adapter->fdir_perfect_lock); 5734} 5735 5736/** 5737 * ixgbe_clean_rx_ring - Free Rx Buffers per Queue 5738 * @rx_ring: ring to free buffers from 5739 **/ 5740static void ixgbe_clean_rx_ring(struct ixgbe_ring *rx_ring) 5741{ 5742 u16 i = rx_ring->next_to_clean; 5743 struct ixgbe_rx_buffer *rx_buffer = &rx_ring->rx_buffer_info[i]; 5744 5745 if (rx_ring->xsk_pool) { 5746 ixgbe_xsk_clean_rx_ring(rx_ring); 5747 goto skip_free; 5748 } 5749 5750 /* Free all the Rx ring sk_buffs */ 5751 while (i != rx_ring->next_to_alloc) { 5752 if (rx_buffer->skb) { 5753 struct sk_buff *skb = rx_buffer->skb; 5754 if (IXGBE_CB(skb)->page_released) 5755 dma_unmap_page_attrs(rx_ring->dev, 5756 IXGBE_CB(skb)->dma, 5757 ixgbe_rx_pg_size(rx_ring), 5758 DMA_FROM_DEVICE, 5759 IXGBE_RX_DMA_ATTR); 5760 dev_kfree_skb(skb); 5761 } 5762 5763 /* Invalidate cache lines that may have been written to by 5764 * device so that we avoid corrupting memory. 5765 */ 5766 dma_sync_single_range_for_cpu(rx_ring->dev, 5767 rx_buffer->dma, 5768 rx_buffer->page_offset, 5769 ixgbe_rx_bufsz(rx_ring), 5770 DMA_FROM_DEVICE); 5771 5772 /* free resources associated with mapping */ 5773 dma_unmap_page_attrs(rx_ring->dev, rx_buffer->dma, 5774 ixgbe_rx_pg_size(rx_ring), 5775 DMA_FROM_DEVICE, 5776 IXGBE_RX_DMA_ATTR); 5777 __page_frag_cache_drain(rx_buffer->page, 5778 rx_buffer->pagecnt_bias); 5779 5780 i++; 5781 rx_buffer++; 5782 if (i == rx_ring->count) { 5783 i = 0; 5784 rx_buffer = rx_ring->rx_buffer_info; 5785 } 5786 } 5787 5788skip_free: 5789 rx_ring->next_to_alloc = 0; 5790 rx_ring->next_to_clean = 0; 5791 rx_ring->next_to_use = 0; 5792} 5793 5794static int ixgbe_fwd_ring_up(struct ixgbe_adapter *adapter, 5795 struct ixgbe_fwd_adapter *accel) 5796{ 5797 u16 rss_i = adapter->ring_feature[RING_F_RSS].indices; 5798 int num_tc = netdev_get_num_tc(adapter->netdev); 5799 struct net_device *vdev = accel->netdev; 5800 int i, baseq, err; 5801 5802 baseq = accel->pool * adapter->num_rx_queues_per_pool; 5803 netdev_dbg(vdev, "pool %i:%i queues %i:%i\n", 5804 accel->pool, adapter->num_rx_pools, 5805 baseq, baseq + adapter->num_rx_queues_per_pool); 5806 5807 accel->rx_base_queue = baseq; 5808 accel->tx_base_queue = baseq; 5809 5810 /* record configuration for macvlan interface in vdev */ 5811 for (i = 0; i < num_tc; i++) 5812 netdev_bind_sb_channel_queue(adapter->netdev, vdev, 5813 i, rss_i, baseq + (rss_i * i)); 5814 5815 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5816 adapter->rx_ring[baseq + i]->netdev = vdev; 5817 5818 /* Guarantee all rings are updated before we update the 5819 * MAC address filter. 5820 */ 5821 wmb(); 5822 5823 /* ixgbe_add_mac_filter will return an index if it succeeds, so we 5824 * need to only treat it as an error value if it is negative. 5825 */ 5826 err = ixgbe_add_mac_filter(adapter, vdev->dev_addr, 5827 VMDQ_P(accel->pool)); 5828 if (err >= 0) 5829 return 0; 5830 5831 /* if we cannot add the MAC rule then disable the offload */ 5832 macvlan_release_l2fw_offload(vdev); 5833 5834 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) 5835 adapter->rx_ring[baseq + i]->netdev = NULL; 5836 5837 netdev_err(vdev, "L2FW offload disabled due to L2 filter error\n"); 5838 5839 /* unbind the queues and drop the subordinate channel config */ 5840 netdev_unbind_sb_channel(adapter->netdev, vdev); 5841 netdev_set_sb_channel(vdev, 0); 5842 5843 clear_bit(accel->pool, adapter->fwd_bitmask); 5844 kfree(accel); 5845 5846 return err; 5847} 5848 5849static int ixgbe_macvlan_up(struct net_device *vdev, 5850 struct netdev_nested_priv *priv) 5851{ 5852 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 5853 struct ixgbe_fwd_adapter *accel; 5854 5855 if (!netif_is_macvlan(vdev)) 5856 return 0; 5857 5858 accel = macvlan_accel_priv(vdev); 5859 if (!accel) 5860 return 0; 5861 5862 ixgbe_fwd_ring_up(adapter, accel); 5863 5864 return 0; 5865} 5866 5867static void ixgbe_configure_dfwd(struct ixgbe_adapter *adapter) 5868{ 5869 struct netdev_nested_priv priv = { 5870 .data = (void *)adapter, 5871 }; 5872 5873 netdev_walk_all_upper_dev_rcu(adapter->netdev, 5874 ixgbe_macvlan_up, &priv); 5875} 5876 5877static void ixgbe_configure(struct ixgbe_adapter *adapter) 5878{ 5879 struct ixgbe_hw *hw = &adapter->hw; 5880 5881 ixgbe_configure_pb(adapter); 5882#ifdef CONFIG_IXGBE_DCB 5883 ixgbe_configure_dcb(adapter); 5884#endif 5885 /* 5886 * We must restore virtualization before VLANs or else 5887 * the VLVF registers will not be populated 5888 */ 5889 ixgbe_configure_virtualization(adapter); 5890 5891 ixgbe_set_rx_mode(adapter->netdev); 5892 ixgbe_restore_vlan(adapter); 5893 ixgbe_ipsec_restore(adapter); 5894 5895 switch (hw->mac.type) { 5896 case ixgbe_mac_82599EB: 5897 case ixgbe_mac_X540: 5898 hw->mac.ops.disable_rx_buff(hw); 5899 break; 5900 default: 5901 break; 5902 } 5903 5904 if (adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE) { 5905 ixgbe_init_fdir_signature_82599(&adapter->hw, 5906 adapter->fdir_pballoc); 5907 } else if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) { 5908 ixgbe_init_fdir_perfect_82599(&adapter->hw, 5909 adapter->fdir_pballoc); 5910 ixgbe_fdir_filter_restore(adapter); 5911 } 5912 5913 switch (hw->mac.type) { 5914 case ixgbe_mac_82599EB: 5915 case ixgbe_mac_X540: 5916 hw->mac.ops.enable_rx_buff(hw); 5917 break; 5918 default: 5919 break; 5920 } 5921 5922#ifdef CONFIG_IXGBE_DCA 5923 /* configure DCA */ 5924 if (adapter->flags & IXGBE_FLAG_DCA_CAPABLE) 5925 ixgbe_setup_dca(adapter); 5926#endif /* CONFIG_IXGBE_DCA */ 5927 5928#ifdef IXGBE_FCOE 5929 /* configure FCoE L2 filters, redirection table, and Rx control */ 5930 ixgbe_configure_fcoe(adapter); 5931 5932#endif /* IXGBE_FCOE */ 5933 ixgbe_configure_tx(adapter); 5934 ixgbe_configure_rx(adapter); 5935 ixgbe_configure_dfwd(adapter); 5936} 5937 5938/** 5939 * ixgbe_enable_link_status_events - enable link status events 5940 * @adapter: pointer to the adapter structure 5941 * @mask: event mask to be set 5942 * 5943 * Enables link status events by invoking ixgbe_configure_lse() 5944 * 5945 * Return: the exit code of the operation. 5946 */ 5947static int ixgbe_enable_link_status_events(struct ixgbe_adapter *adapter, 5948 u16 mask) 5949{ 5950 int err; 5951 5952 err = ixgbe_configure_lse(&adapter->hw, true, mask); 5953 if (err) 5954 return err; 5955 5956 adapter->lse_mask = mask; 5957 return 0; 5958} 5959 5960/** 5961 * ixgbe_disable_link_status_events - disable link status events 5962 * @adapter: pointer to the adapter structure 5963 * 5964 * Disables link status events by invoking ixgbe_configure_lse() 5965 * 5966 * Return: the exit code of the operation. 5967 */ 5968static int ixgbe_disable_link_status_events(struct ixgbe_adapter *adapter) 5969{ 5970 int err; 5971 5972 err = ixgbe_configure_lse(&adapter->hw, false, adapter->lse_mask); 5973 if (err) 5974 return err; 5975 5976 adapter->lse_mask = 0; 5977 return 0; 5978} 5979 5980/** 5981 * ixgbe_sfp_link_config - set up SFP+ link 5982 * @adapter: pointer to private adapter struct 5983 **/ 5984static void ixgbe_sfp_link_config(struct ixgbe_adapter *adapter) 5985{ 5986 /* 5987 * We are assuming the worst case scenario here, and that 5988 * is that an SFP was inserted/removed after the reset 5989 * but before SFP detection was enabled. As such the best 5990 * solution is to just start searching as soon as we start 5991 */ 5992 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 5993 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 5994 5995 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 5996 adapter->sfp_poll_time = 0; 5997} 5998 5999/** 6000 * ixgbe_non_sfp_link_config - set up non-SFP+ link 6001 * @hw: pointer to private hardware struct 6002 * 6003 * Configure non-SFP link. 6004 * 6005 * Return: 0 on success, negative on failure 6006 **/ 6007static int ixgbe_non_sfp_link_config(struct ixgbe_hw *hw) 6008{ 6009 struct ixgbe_adapter *adapter = container_of(hw, struct ixgbe_adapter, 6010 hw); 6011 u16 mask = ~((u16)(IXGBE_ACI_LINK_EVENT_UPDOWN | 6012 IXGBE_ACI_LINK_EVENT_MEDIA_NA | 6013 IXGBE_ACI_LINK_EVENT_MODULE_QUAL_FAIL | 6014 IXGBE_ACI_LINK_EVENT_PHY_FW_LOAD_FAIL)); 6015 bool autoneg, link_up = false; 6016 int ret = -EIO; 6017 u32 speed; 6018 6019 if (hw->mac.ops.check_link) 6020 ret = hw->mac.ops.check_link(hw, &speed, &link_up, false); 6021 6022 if (ret) 6023 return ret; 6024 6025 speed = hw->phy.autoneg_advertised; 6026 if (!speed && hw->mac.ops.get_link_capabilities) { 6027 ret = hw->mac.ops.get_link_capabilities(hw, &speed, 6028 &autoneg); 6029 /* remove NBASE-T speeds from default autonegotiation 6030 * to accommodate broken network switches in the field 6031 * which cannot cope with advertised NBASE-T speeds 6032 */ 6033 speed &= ~(IXGBE_LINK_SPEED_5GB_FULL | 6034 IXGBE_LINK_SPEED_2_5GB_FULL); 6035 } 6036 6037 if (ret) 6038 return ret; 6039 6040 if (hw->mac.ops.setup_link) { 6041 if (adapter->hw.mac.type == ixgbe_mac_e610) { 6042 ret = ixgbe_enable_link_status_events(adapter, mask); 6043 if (ret) 6044 return ret; 6045 } 6046 ret = hw->mac.ops.setup_link(hw, speed, link_up); 6047 } 6048 6049 return ret; 6050} 6051 6052/** 6053 * ixgbe_check_media_subtask - check for media 6054 * @adapter: pointer to adapter structure 6055 * 6056 * If media is available then initialize PHY user configuration. Configure the 6057 * PHY if the interface is up. 6058 */ 6059static void ixgbe_check_media_subtask(struct ixgbe_adapter *adapter) 6060{ 6061 struct ixgbe_hw *hw = &adapter->hw; 6062 6063 /* No need to check for media if it's already present */ 6064 if (!(adapter->flags2 & IXGBE_FLAG2_NO_MEDIA)) 6065 return; 6066 6067 /* Refresh link info and check if media is present */ 6068 if (ixgbe_update_link_info(hw)) 6069 return; 6070 6071 ixgbe_check_link_cfg_err(adapter, hw->link.link_info.link_cfg_err); 6072 6073 if (hw->link.link_info.link_info & IXGBE_ACI_MEDIA_AVAILABLE) { 6074 /* PHY settings are reset on media insertion, reconfigure 6075 * PHY to preserve settings. 6076 */ 6077 if (!(ixgbe_non_sfp_link_config(&adapter->hw))) 6078 adapter->flags2 &= ~IXGBE_FLAG2_NO_MEDIA; 6079 6080 /* A Link Status Event will be generated; the event handler 6081 * will complete bringing the interface up 6082 */ 6083 } 6084} 6085 6086/** 6087 * ixgbe_clear_vf_stats_counters - Clear out VF stats after reset 6088 * @adapter: board private structure 6089 * 6090 * On a reset we need to clear out the VF stats or accounting gets 6091 * messed up because they're not clear on read. 6092 **/ 6093static void ixgbe_clear_vf_stats_counters(struct ixgbe_adapter *adapter) 6094{ 6095 struct ixgbe_hw *hw = &adapter->hw; 6096 int i; 6097 6098 for (i = 0; i < adapter->num_vfs; i++) { 6099 adapter->vfinfo[i].last_vfstats.gprc = 6100 IXGBE_READ_REG(hw, IXGBE_PVFGPRC(i)); 6101 adapter->vfinfo[i].saved_rst_vfstats.gprc += 6102 adapter->vfinfo[i].vfstats.gprc; 6103 adapter->vfinfo[i].vfstats.gprc = 0; 6104 adapter->vfinfo[i].last_vfstats.gptc = 6105 IXGBE_READ_REG(hw, IXGBE_PVFGPTC(i)); 6106 adapter->vfinfo[i].saved_rst_vfstats.gptc += 6107 adapter->vfinfo[i].vfstats.gptc; 6108 adapter->vfinfo[i].vfstats.gptc = 0; 6109 adapter->vfinfo[i].last_vfstats.gorc = 6110 IXGBE_READ_REG(hw, IXGBE_PVFGORC_LSB(i)); 6111 adapter->vfinfo[i].saved_rst_vfstats.gorc += 6112 adapter->vfinfo[i].vfstats.gorc; 6113 adapter->vfinfo[i].vfstats.gorc = 0; 6114 adapter->vfinfo[i].last_vfstats.gotc = 6115 IXGBE_READ_REG(hw, IXGBE_PVFGOTC_LSB(i)); 6116 adapter->vfinfo[i].saved_rst_vfstats.gotc += 6117 adapter->vfinfo[i].vfstats.gotc; 6118 adapter->vfinfo[i].vfstats.gotc = 0; 6119 adapter->vfinfo[i].last_vfstats.mprc = 6120 IXGBE_READ_REG(hw, IXGBE_PVFMPRC(i)); 6121 adapter->vfinfo[i].saved_rst_vfstats.mprc += 6122 adapter->vfinfo[i].vfstats.mprc; 6123 adapter->vfinfo[i].vfstats.mprc = 0; 6124 } 6125} 6126 6127static void ixgbe_setup_gpie(struct ixgbe_adapter *adapter) 6128{ 6129 struct ixgbe_hw *hw = &adapter->hw; 6130 u32 gpie = 0; 6131 6132 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) { 6133 gpie = IXGBE_GPIE_MSIX_MODE | IXGBE_GPIE_PBA_SUPPORT | 6134 IXGBE_GPIE_OCD; 6135 gpie |= IXGBE_GPIE_EIAME; 6136 /* 6137 * use EIAM to auto-mask when MSI-X interrupt is asserted 6138 * this saves a register write for every interrupt 6139 */ 6140 switch (hw->mac.type) { 6141 case ixgbe_mac_82598EB: 6142 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 6143 break; 6144 case ixgbe_mac_82599EB: 6145 case ixgbe_mac_X540: 6146 case ixgbe_mac_X550: 6147 case ixgbe_mac_X550EM_x: 6148 case ixgbe_mac_x550em_a: 6149 case ixgbe_mac_e610: 6150 default: 6151 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(0), 0xFFFFFFFF); 6152 IXGBE_WRITE_REG(hw, IXGBE_EIAM_EX(1), 0xFFFFFFFF); 6153 break; 6154 } 6155 } else { 6156 /* legacy interrupts, use EIAM to auto-mask when reading EICR, 6157 * specifically only auto mask tx and rx interrupts */ 6158 IXGBE_WRITE_REG(hw, IXGBE_EIAM, IXGBE_EICS_RTX_QUEUE); 6159 } 6160 6161 /* XXX: to interrupt immediately for EICS writes, enable this */ 6162 /* gpie |= IXGBE_GPIE_EIMEN; */ 6163 6164 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 6165 gpie &= ~IXGBE_GPIE_VTMODE_MASK; 6166 6167 switch (adapter->ring_feature[RING_F_VMDQ].mask) { 6168 case IXGBE_82599_VMDQ_8Q_MASK: 6169 gpie |= IXGBE_GPIE_VTMODE_16; 6170 break; 6171 case IXGBE_82599_VMDQ_4Q_MASK: 6172 gpie |= IXGBE_GPIE_VTMODE_32; 6173 break; 6174 default: 6175 gpie |= IXGBE_GPIE_VTMODE_64; 6176 break; 6177 } 6178 } 6179 6180 /* Enable Thermal over heat sensor interrupt */ 6181 if (adapter->flags2 & IXGBE_FLAG2_TEMP_SENSOR_CAPABLE) { 6182 switch (adapter->hw.mac.type) { 6183 case ixgbe_mac_82599EB: 6184 gpie |= IXGBE_SDP0_GPIEN_8259X; 6185 break; 6186 default: 6187 break; 6188 } 6189 } 6190 6191 /* Enable fan failure interrupt */ 6192 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) 6193 gpie |= IXGBE_SDP1_GPIEN(hw); 6194 6195 switch (hw->mac.type) { 6196 case ixgbe_mac_82599EB: 6197 gpie |= IXGBE_SDP1_GPIEN_8259X | IXGBE_SDP2_GPIEN_8259X; 6198 break; 6199 case ixgbe_mac_X550EM_x: 6200 case ixgbe_mac_x550em_a: 6201 gpie |= IXGBE_SDP0_GPIEN_X540; 6202 break; 6203 default: 6204 break; 6205 } 6206 6207 IXGBE_WRITE_REG(hw, IXGBE_GPIE, gpie); 6208} 6209 6210static void ixgbe_up_complete(struct ixgbe_adapter *adapter) 6211{ 6212 struct ixgbe_hw *hw = &adapter->hw; 6213 int err; 6214 u32 ctrl_ext; 6215 6216 ixgbe_get_hw_control(adapter); 6217 ixgbe_setup_gpie(adapter); 6218 6219 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 6220 ixgbe_configure_msix(adapter); 6221 else 6222 ixgbe_configure_msi_and_legacy(adapter); 6223 6224 /* enable the optics for 82599 SFP+ fiber */ 6225 if (hw->mac.ops.enable_tx_laser) 6226 hw->mac.ops.enable_tx_laser(hw); 6227 6228 if (hw->phy.ops.set_phy_power) 6229 hw->phy.ops.set_phy_power(hw, true); 6230 6231 smp_mb__before_atomic(); 6232 clear_bit(__IXGBE_DOWN, &adapter->state); 6233 ixgbe_napi_enable_all(adapter); 6234 6235 if (ixgbe_is_sfp(hw)) { 6236 ixgbe_sfp_link_config(adapter); 6237 } else { 6238 err = ixgbe_non_sfp_link_config(hw); 6239 if (err) 6240 e_err(probe, "link_config FAILED %d\n", err); 6241 } 6242 6243 /* clear any pending interrupts, may auto mask */ 6244 IXGBE_READ_REG(hw, IXGBE_EICR); 6245 ixgbe_irq_enable(adapter, true, true); 6246 6247 /* 6248 * If this adapter has a fan, check to see if we had a failure 6249 * before we enabled the interrupt. 6250 */ 6251 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 6252 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 6253 if (esdp & IXGBE_ESDP_SDP1) 6254 e_crit(drv, "Fan has stopped, replace the adapter\n"); 6255 } 6256 6257 /* bring the link up in the watchdog, this could race with our first 6258 * link up interrupt but shouldn't be a problem */ 6259 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 6260 adapter->link_check_timeout = jiffies; 6261 mod_timer(&adapter->service_timer, jiffies); 6262 6263 ixgbe_clear_vf_stats_counters(adapter); 6264 /* Set PF Reset Done bit so PF/VF Mail Ops can work */ 6265 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT); 6266 ctrl_ext |= IXGBE_CTRL_EXT_PFRSTD; 6267 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext); 6268 6269 /* update setting rx tx for all active vfs */ 6270 ixgbe_set_all_vfs(adapter); 6271} 6272 6273void ixgbe_reinit_locked(struct ixgbe_adapter *adapter) 6274{ 6275 /* put off any impending NetWatchDogTimeout */ 6276 netif_trans_update(adapter->netdev); 6277 6278 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) 6279 usleep_range(1000, 2000); 6280 if (adapter->hw.phy.type == ixgbe_phy_fw) 6281 ixgbe_watchdog_link_is_down(adapter); 6282 ixgbe_down(adapter); 6283 /* 6284 * If SR-IOV enabled then wait a bit before bringing the adapter 6285 * back up to give the VFs time to respond to the reset. The 6286 * two second wait is based upon the watchdog timer cycle in 6287 * the VF driver. 6288 */ 6289 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 6290 msleep(2000); 6291 ixgbe_up(adapter); 6292 6293 /* E610 has no FW event to notify all PFs of an EMPR reset, so 6294 * refresh the FW version here to pick up any new FW version after 6295 * a hardware reset (e.g. EMPR triggered by another PF's devlink 6296 * reload). ixgbe_refresh_fw_version() updates both hw->flash and 6297 * adapter->eeprom_id so ethtool -i reports the correct string. 6298 */ 6299 if (adapter->hw.mac.type == ixgbe_mac_e610) 6300 (void)ixgbe_refresh_fw_version(adapter); 6301 6302 clear_bit(__IXGBE_RESETTING, &adapter->state); 6303} 6304 6305void ixgbe_up(struct ixgbe_adapter *adapter) 6306{ 6307 /* hardware has been reset, we need to reload some things */ 6308 ixgbe_configure(adapter); 6309 6310 ixgbe_up_complete(adapter); 6311} 6312 6313static unsigned long ixgbe_get_completion_timeout(struct ixgbe_adapter *adapter) 6314{ 6315 u16 devctl2; 6316 6317 pcie_capability_read_word(adapter->pdev, PCI_EXP_DEVCTL2, &devctl2); 6318 6319 switch (devctl2 & IXGBE_PCIDEVCTRL2_TIMEO_MASK) { 6320 case IXGBE_PCIDEVCTRL2_17_34s: 6321 case IXGBE_PCIDEVCTRL2_4_8s: 6322 /* For now we cap the upper limit on delay to 2 seconds 6323 * as we end up going up to 34 seconds of delay in worst 6324 * case timeout value. 6325 */ 6326 case IXGBE_PCIDEVCTRL2_1_2s: 6327 return 2000000ul; /* 2.0 s */ 6328 case IXGBE_PCIDEVCTRL2_260_520ms: 6329 return 520000ul; /* 520 ms */ 6330 case IXGBE_PCIDEVCTRL2_65_130ms: 6331 return 130000ul; /* 130 ms */ 6332 case IXGBE_PCIDEVCTRL2_16_32ms: 6333 return 32000ul; /* 32 ms */ 6334 case IXGBE_PCIDEVCTRL2_1_2ms: 6335 return 2000ul; /* 2 ms */ 6336 case IXGBE_PCIDEVCTRL2_50_100us: 6337 return 100ul; /* 100 us */ 6338 case IXGBE_PCIDEVCTRL2_16_32ms_def: 6339 return 32000ul; /* 32 ms */ 6340 default: 6341 break; 6342 } 6343 6344 /* We shouldn't need to hit this path, but just in case default as 6345 * though completion timeout is not supported and support 32ms. 6346 */ 6347 return 32000ul; 6348} 6349 6350void ixgbe_disable_rx(struct ixgbe_adapter *adapter) 6351{ 6352 unsigned long wait_delay, delay_interval; 6353 struct ixgbe_hw *hw = &adapter->hw; 6354 int i, wait_loop; 6355 u32 rxdctl; 6356 6357 /* disable receives */ 6358 hw->mac.ops.disable_rx(hw); 6359 6360 if (ixgbe_removed(hw->hw_addr)) 6361 return; 6362 6363 /* disable all enabled Rx queues */ 6364 for (i = 0; i < adapter->num_rx_queues; i++) { 6365 struct ixgbe_ring *ring = adapter->rx_ring[i]; 6366 u8 reg_idx = ring->reg_idx; 6367 6368 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 6369 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 6370 rxdctl |= IXGBE_RXDCTL_SWFLSH; 6371 6372 /* write value back with RXDCTL.ENABLE bit cleared */ 6373 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 6374 } 6375 6376 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 6377 if (hw->mac.type == ixgbe_mac_82598EB && 6378 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 6379 return; 6380 6381 /* Determine our minimum delay interval. We will increase this value 6382 * with each subsequent test. This way if the device returns quickly 6383 * we should spend as little time as possible waiting, however as 6384 * the time increases we will wait for larger periods of time. 6385 * 6386 * The trick here is that we increase the interval using the 6387 * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result 6388 * of that wait is that it totals up to 100x whatever interval we 6389 * choose. Since our minimum wait is 100us we can just divide the 6390 * total timeout by 100 to get our minimum delay interval. 6391 */ 6392 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 6393 6394 wait_loop = IXGBE_MAX_RX_DESC_POLL; 6395 wait_delay = delay_interval; 6396 6397 while (wait_loop--) { 6398 usleep_range(wait_delay, wait_delay + 10); 6399 wait_delay += delay_interval * 2; 6400 rxdctl = 0; 6401 6402 /* OR together the reading of all the active RXDCTL registers, 6403 * and then test the result. We need the disable to complete 6404 * before we start freeing the memory and invalidating the 6405 * DMA mappings. 6406 */ 6407 for (i = 0; i < adapter->num_rx_queues; i++) { 6408 struct ixgbe_ring *ring = adapter->rx_ring[i]; 6409 u8 reg_idx = ring->reg_idx; 6410 6411 rxdctl |= IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 6412 } 6413 6414 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 6415 return; 6416 } 6417 6418 e_err(drv, 6419 "RXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); 6420} 6421 6422void ixgbe_disable_tx(struct ixgbe_adapter *adapter) 6423{ 6424 unsigned long wait_delay, delay_interval; 6425 struct ixgbe_hw *hw = &adapter->hw; 6426 int i, wait_loop; 6427 u32 txdctl; 6428 6429 if (ixgbe_removed(hw->hw_addr)) 6430 return; 6431 6432 /* disable all enabled Tx queues */ 6433 for (i = 0; i < adapter->num_tx_queues; i++) { 6434 struct ixgbe_ring *ring = adapter->tx_ring[i]; 6435 u8 reg_idx = ring->reg_idx; 6436 6437 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 6438 } 6439 6440 /* disable all enabled XDP Tx queues */ 6441 for (i = 0; i < adapter->num_xdp_queues; i++) { 6442 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 6443 u8 reg_idx = ring->reg_idx; 6444 6445 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 6446 } 6447 6448 /* If the link is not up there shouldn't be much in the way of 6449 * pending transactions. Those that are left will be flushed out 6450 * when the reset logic goes through the flush sequence to clean out 6451 * the pending Tx transactions. 6452 */ 6453 if (!(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 6454 goto dma_engine_disable; 6455 6456 /* Determine our minimum delay interval. We will increase this value 6457 * with each subsequent test. This way if the device returns quickly 6458 * we should spend as little time as possible waiting, however as 6459 * the time increases we will wait for larger periods of time. 6460 * 6461 * The trick here is that we increase the interval using the 6462 * following pattern: 1x 3x 5x 7x 9x 11x 13x 15x 17x 19x. The result 6463 * of that wait is that it totals up to 100x whatever interval we 6464 * choose. Since our minimum wait is 100us we can just divide the 6465 * total timeout by 100 to get our minimum delay interval. 6466 */ 6467 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 6468 6469 wait_loop = IXGBE_MAX_RX_DESC_POLL; 6470 wait_delay = delay_interval; 6471 6472 while (wait_loop--) { 6473 usleep_range(wait_delay, wait_delay + 10); 6474 wait_delay += delay_interval * 2; 6475 txdctl = 0; 6476 6477 /* OR together the reading of all the active TXDCTL registers, 6478 * and then test the result. We need the disable to complete 6479 * before we start freeing the memory and invalidating the 6480 * DMA mappings. 6481 */ 6482 for (i = 0; i < adapter->num_tx_queues; i++) { 6483 struct ixgbe_ring *ring = adapter->tx_ring[i]; 6484 u8 reg_idx = ring->reg_idx; 6485 6486 txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 6487 } 6488 for (i = 0; i < adapter->num_xdp_queues; i++) { 6489 struct ixgbe_ring *ring = adapter->xdp_ring[i]; 6490 u8 reg_idx = ring->reg_idx; 6491 6492 txdctl |= IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 6493 } 6494 6495 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 6496 goto dma_engine_disable; 6497 } 6498 6499 e_err(drv, 6500 "TXDCTL.ENABLE for one or more queues not cleared within the polling period\n"); 6501 6502dma_engine_disable: 6503 /* Disable the Tx DMA engine on 82599 and later MAC */ 6504 switch (hw->mac.type) { 6505 case ixgbe_mac_82599EB: 6506 case ixgbe_mac_X540: 6507 case ixgbe_mac_X550: 6508 case ixgbe_mac_X550EM_x: 6509 case ixgbe_mac_x550em_a: 6510 case ixgbe_mac_e610: 6511 IXGBE_WRITE_REG(hw, IXGBE_DMATXCTL, 6512 (IXGBE_READ_REG(hw, IXGBE_DMATXCTL) & 6513 ~IXGBE_DMATXCTL_TE)); 6514 fallthrough; 6515 default: 6516 break; 6517 } 6518} 6519 6520void ixgbe_reset(struct ixgbe_adapter *adapter) 6521{ 6522 struct ixgbe_hw *hw = &adapter->hw; 6523 struct net_device *netdev = adapter->netdev; 6524 int err; 6525 6526 if (ixgbe_removed(hw->hw_addr)) 6527 return; 6528 /* lock SFP init bit to prevent race conditions with the watchdog */ 6529 while (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 6530 usleep_range(1000, 2000); 6531 6532 /* clear all SFP and link config related flags while holding SFP_INIT */ 6533 adapter->flags2 &= ~(IXGBE_FLAG2_SEARCH_FOR_SFP | 6534 IXGBE_FLAG2_SFP_NEEDS_RESET); 6535 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 6536 6537 err = hw->mac.ops.init_hw(hw); 6538 switch (err) { 6539 case 0: 6540 case -ENOENT: 6541 case -EOPNOTSUPP: 6542 break; 6543 case -EALREADY: 6544 e_dev_err("primary disable timed out\n"); 6545 break; 6546 case -EACCES: 6547 /* We are running on a pre-production device, log a warning */ 6548 e_dev_warn("This device is a pre-production adapter/LOM. " 6549 "Please be aware there may be issues associated with " 6550 "your hardware. If you are experiencing problems " 6551 "please contact your Intel or hardware " 6552 "representative who provided you with this " 6553 "hardware.\n"); 6554 break; 6555 default: 6556 e_dev_err("Hardware Error: %d\n", err); 6557 } 6558 6559 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 6560 6561 /* flush entries out of MAC table */ 6562 ixgbe_flush_sw_mac_table(adapter); 6563 __dev_uc_unsync(netdev, NULL); 6564 6565 /* do not flush user set addresses */ 6566 ixgbe_mac_set_default_filter(adapter); 6567 6568 /* update SAN MAC vmdq pool selection */ 6569 if (hw->mac.san_mac_rar_index) 6570 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 6571 6572 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 6573 ixgbe_ptp_reset(adapter); 6574 6575 if (hw->phy.ops.set_phy_power) { 6576 if (!netif_running(adapter->netdev) && !adapter->wol) 6577 hw->phy.ops.set_phy_power(hw, false); 6578 else 6579 hw->phy.ops.set_phy_power(hw, true); 6580 } 6581} 6582 6583/** 6584 * ixgbe_clean_tx_ring - Free Tx Buffers 6585 * @tx_ring: ring to be cleaned 6586 **/ 6587static void ixgbe_clean_tx_ring(struct ixgbe_ring *tx_ring) 6588{ 6589 u16 i = tx_ring->next_to_clean; 6590 struct ixgbe_tx_buffer *tx_buffer = &tx_ring->tx_buffer_info[i]; 6591 6592 if (tx_ring->xsk_pool) { 6593 ixgbe_xsk_clean_tx_ring(tx_ring); 6594 goto out; 6595 } 6596 6597 while (i != tx_ring->next_to_use) { 6598 union ixgbe_adv_tx_desc *eop_desc, *tx_desc; 6599 6600 /* Free all the Tx ring sk_buffs */ 6601 if (ring_is_xdp(tx_ring)) 6602 xdp_return_frame(tx_buffer->xdpf); 6603 else 6604 dev_kfree_skb_any(tx_buffer->skb); 6605 6606 /* unmap skb header data */ 6607 dma_unmap_single(tx_ring->dev, 6608 dma_unmap_addr(tx_buffer, dma), 6609 dma_unmap_len(tx_buffer, len), 6610 DMA_TO_DEVICE); 6611 6612 /* check for eop_desc to determine the end of the packet */ 6613 eop_desc = tx_buffer->next_to_watch; 6614 tx_desc = IXGBE_TX_DESC(tx_ring, i); 6615 6616 /* unmap remaining buffers */ 6617 while (tx_desc != eop_desc) { 6618 tx_buffer++; 6619 tx_desc++; 6620 i++; 6621 if (unlikely(i == tx_ring->count)) { 6622 i = 0; 6623 tx_buffer = tx_ring->tx_buffer_info; 6624 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 6625 } 6626 6627 /* unmap any remaining paged data */ 6628 if (dma_unmap_len(tx_buffer, len)) 6629 dma_unmap_page(tx_ring->dev, 6630 dma_unmap_addr(tx_buffer, dma), 6631 dma_unmap_len(tx_buffer, len), 6632 DMA_TO_DEVICE); 6633 } 6634 6635 /* move us one more past the eop_desc for start of next pkt */ 6636 tx_buffer++; 6637 i++; 6638 if (unlikely(i == tx_ring->count)) { 6639 i = 0; 6640 tx_buffer = tx_ring->tx_buffer_info; 6641 } 6642 } 6643 6644 /* reset BQL for queue */ 6645 if (!ring_is_xdp(tx_ring)) 6646 netdev_tx_reset_queue(txring_txq(tx_ring)); 6647 6648out: 6649 /* reset next_to_use and next_to_clean */ 6650 tx_ring->next_to_use = 0; 6651 tx_ring->next_to_clean = 0; 6652} 6653 6654/** 6655 * ixgbe_clean_all_rx_rings - Free Rx Buffers for all queues 6656 * @adapter: board private structure 6657 **/ 6658static void ixgbe_clean_all_rx_rings(struct ixgbe_adapter *adapter) 6659{ 6660 int i; 6661 6662 for (i = 0; i < adapter->num_rx_queues; i++) 6663 ixgbe_clean_rx_ring(adapter->rx_ring[i]); 6664} 6665 6666/** 6667 * ixgbe_clean_all_tx_rings - Free Tx Buffers for all queues 6668 * @adapter: board private structure 6669 **/ 6670static void ixgbe_clean_all_tx_rings(struct ixgbe_adapter *adapter) 6671{ 6672 int i; 6673 6674 for (i = 0; i < adapter->num_tx_queues; i++) 6675 ixgbe_clean_tx_ring(adapter->tx_ring[i]); 6676 for (i = 0; i < adapter->num_xdp_queues; i++) 6677 ixgbe_clean_tx_ring(adapter->xdp_ring[i]); 6678} 6679 6680static void ixgbe_fdir_filter_exit(struct ixgbe_adapter *adapter) 6681{ 6682 struct hlist_node *node2; 6683 struct ixgbe_fdir_filter *filter; 6684 6685 spin_lock(&adapter->fdir_perfect_lock); 6686 6687 hlist_for_each_entry_safe(filter, node2, 6688 &adapter->fdir_filter_list, fdir_node) { 6689 hlist_del(&filter->fdir_node); 6690 kfree(filter); 6691 } 6692 adapter->fdir_filter_count = 0; 6693 6694 spin_unlock(&adapter->fdir_perfect_lock); 6695} 6696 6697void ixgbe_down(struct ixgbe_adapter *adapter) 6698{ 6699 struct net_device *netdev = adapter->netdev; 6700 struct ixgbe_hw *hw = &adapter->hw; 6701 int i; 6702 6703 /* signal that we are down to the interrupt handler */ 6704 if (test_and_set_bit(__IXGBE_DOWN, &adapter->state)) 6705 return; /* do nothing if already down */ 6706 6707 /* Shut off incoming Tx traffic */ 6708 netif_tx_stop_all_queues(netdev); 6709 6710 /* call carrier off first to avoid false dev_watchdog timeouts */ 6711 netif_carrier_off(netdev); 6712 netif_tx_disable(netdev); 6713 6714 /* Disable Rx */ 6715 ixgbe_disable_rx(adapter); 6716 6717 /* synchronize_rcu() needed for pending XDP buffers to drain */ 6718 if (adapter->xdp_ring[0]) 6719 synchronize_rcu(); 6720 6721 ixgbe_irq_disable(adapter); 6722 6723 ixgbe_napi_disable_all(adapter); 6724 6725 clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 6726 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 6727 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 6728 6729 timer_delete_sync(&adapter->service_timer); 6730 6731 if (adapter->num_vfs) { 6732 /* Clear EITR Select mapping */ 6733 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EITRSEL, 0); 6734 6735 /* Mark all the VFs as inactive */ 6736 for (i = 0 ; i < adapter->num_vfs; i++) 6737 adapter->vfinfo[i].clear_to_send = false; 6738 6739 /* update setting rx tx for all active vfs */ 6740 ixgbe_set_all_vfs(adapter); 6741 } 6742 6743 /* disable transmits in the hardware now that interrupts are off */ 6744 ixgbe_disable_tx(adapter); 6745 6746 if (!pci_channel_offline(adapter->pdev)) 6747 ixgbe_reset(adapter); 6748 6749 /* power down the optics for 82599 SFP+ fiber */ 6750 if (hw->mac.ops.disable_tx_laser) 6751 hw->mac.ops.disable_tx_laser(hw); 6752 6753 ixgbe_clean_all_tx_rings(adapter); 6754 ixgbe_clean_all_rx_rings(adapter); 6755 if (adapter->hw.mac.type == ixgbe_mac_e610) 6756 ixgbe_disable_link_status_events(adapter); 6757} 6758 6759/** 6760 * ixgbe_set_eee_capable - helper function to determine EEE support on X550 6761 * @adapter: board private structure 6762 */ 6763static void ixgbe_set_eee_capable(struct ixgbe_adapter *adapter) 6764{ 6765 struct ixgbe_hw *hw = &adapter->hw; 6766 6767 switch (hw->device_id) { 6768 case IXGBE_DEV_ID_X550EM_A_1G_T: 6769 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6770 if (!hw->phy.eee_speeds_supported) 6771 break; 6772 adapter->flags2 |= IXGBE_FLAG2_EEE_CAPABLE; 6773 if (!hw->phy.eee_speeds_advertised) 6774 break; 6775 adapter->flags2 |= IXGBE_FLAG2_EEE_ENABLED; 6776 break; 6777 default: 6778 adapter->flags2 &= ~IXGBE_FLAG2_EEE_CAPABLE; 6779 adapter->flags2 &= ~IXGBE_FLAG2_EEE_ENABLED; 6780 break; 6781 } 6782} 6783 6784/** 6785 * ixgbe_tx_timeout - Respond to a Tx Hang 6786 * @netdev: network interface device structure 6787 * @txqueue: queue number that timed out 6788 **/ 6789static void ixgbe_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue) 6790{ 6791 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 6792 6793 /* Do the reset outside of interrupt context */ 6794 ixgbe_tx_timeout_reset(adapter); 6795} 6796 6797#ifdef CONFIG_IXGBE_DCB 6798static void ixgbe_init_dcb(struct ixgbe_adapter *adapter) 6799{ 6800 struct ixgbe_hw *hw = &adapter->hw; 6801 struct tc_configuration *tc; 6802 int j; 6803 6804 switch (hw->mac.type) { 6805 case ixgbe_mac_82598EB: 6806 case ixgbe_mac_82599EB: 6807 adapter->dcb_cfg.num_tcs.pg_tcs = MAX_TRAFFIC_CLASS; 6808 adapter->dcb_cfg.num_tcs.pfc_tcs = MAX_TRAFFIC_CLASS; 6809 break; 6810 case ixgbe_mac_X540: 6811 case ixgbe_mac_X550: 6812 case ixgbe_mac_e610: 6813 adapter->dcb_cfg.num_tcs.pg_tcs = X540_TRAFFIC_CLASS; 6814 adapter->dcb_cfg.num_tcs.pfc_tcs = X540_TRAFFIC_CLASS; 6815 break; 6816 case ixgbe_mac_X550EM_x: 6817 case ixgbe_mac_x550em_a: 6818 default: 6819 adapter->dcb_cfg.num_tcs.pg_tcs = DEF_TRAFFIC_CLASS; 6820 adapter->dcb_cfg.num_tcs.pfc_tcs = DEF_TRAFFIC_CLASS; 6821 break; 6822 } 6823 6824 /* Configure DCB traffic classes */ 6825 for (j = 0; j < MAX_TRAFFIC_CLASS; j++) { 6826 tc = &adapter->dcb_cfg.tc_config[j]; 6827 tc->path[DCB_TX_CONFIG].bwg_id = 0; 6828 tc->path[DCB_TX_CONFIG].bwg_percent = 12 + (j & 1); 6829 tc->path[DCB_RX_CONFIG].bwg_id = 0; 6830 tc->path[DCB_RX_CONFIG].bwg_percent = 12 + (j & 1); 6831 tc->dcb_pfc = pfc_disabled; 6832 } 6833 6834 /* Initialize default user to priority mapping, UPx->TC0 */ 6835 tc = &adapter->dcb_cfg.tc_config[0]; 6836 tc->path[DCB_TX_CONFIG].up_to_tc_bitmap = 0xFF; 6837 tc->path[DCB_RX_CONFIG].up_to_tc_bitmap = 0xFF; 6838 6839 adapter->dcb_cfg.bw_percentage[DCB_TX_CONFIG][0] = 100; 6840 adapter->dcb_cfg.bw_percentage[DCB_RX_CONFIG][0] = 100; 6841 adapter->dcb_cfg.pfc_mode_enable = false; 6842 adapter->dcb_set_bitmap = 0x00; 6843 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 6844 adapter->dcbx_cap = DCB_CAP_DCBX_HOST | DCB_CAP_DCBX_VER_CEE; 6845 memcpy(&adapter->temp_dcb_cfg, &adapter->dcb_cfg, 6846 sizeof(adapter->temp_dcb_cfg)); 6847} 6848#endif 6849 6850/** 6851 * ixgbe_sw_init - Initialize general software structures (struct ixgbe_adapter) 6852 * @adapter: board private structure to initialize 6853 * @ii: pointer to ixgbe_info for device 6854 * 6855 * ixgbe_sw_init initializes the Adapter private data structure. 6856 * Fields are initialized based on PCI device information and 6857 * OS network device settings (MTU size). 6858 **/ 6859static int ixgbe_sw_init(struct ixgbe_adapter *adapter, 6860 const struct ixgbe_info *ii) 6861{ 6862 struct ixgbe_hw *hw = &adapter->hw; 6863 struct pci_dev *pdev = adapter->pdev; 6864 unsigned int rss, fdir; 6865 u32 fwsm; 6866 int i; 6867 6868 /* PCI config space info */ 6869 6870 hw->vendor_id = pdev->vendor; 6871 hw->device_id = pdev->device; 6872 hw->revision_id = pdev->revision; 6873 hw->subsystem_vendor_id = pdev->subsystem_vendor; 6874 hw->subsystem_device_id = pdev->subsystem_device; 6875 6876 hw->mac.max_link_up_time = IXGBE_LINK_UP_TIME; 6877 6878 /* get_invariants needs the device IDs */ 6879 ii->get_invariants(hw); 6880 6881 /* Set common capability flags and settings */ 6882 rss = min_t(int, ixgbe_max_rss_indices(adapter), num_online_cpus()); 6883 adapter->ring_feature[RING_F_RSS].limit = rss; 6884 adapter->flags2 |= IXGBE_FLAG2_RSC_CAPABLE; 6885 adapter->max_q_vectors = MAX_Q_VECTORS_82599; 6886 adapter->atr_sample_rate = 20; 6887 fdir = min_t(int, IXGBE_MAX_FDIR_INDICES, num_online_cpus()); 6888 adapter->ring_feature[RING_F_FDIR].limit = fdir; 6889 adapter->fdir_pballoc = IXGBE_FDIR_PBALLOC_64K; 6890 adapter->ring_feature[RING_F_VMDQ].limit = 1; 6891#ifdef CONFIG_IXGBE_DCA 6892 adapter->flags |= IXGBE_FLAG_DCA_CAPABLE; 6893#endif 6894#ifdef CONFIG_IXGBE_DCB 6895 adapter->flags |= IXGBE_FLAG_DCB_CAPABLE; 6896 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 6897#endif 6898#ifdef IXGBE_FCOE 6899 adapter->flags |= IXGBE_FLAG_FCOE_CAPABLE; 6900 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6901#ifdef CONFIG_IXGBE_DCB 6902 /* Default traffic class to use for FCoE */ 6903 adapter->fcoe.up = IXGBE_FCOE_DEFTC; 6904#endif /* CONFIG_IXGBE_DCB */ 6905#endif /* IXGBE_FCOE */ 6906 6907 /* initialize static ixgbe jump table entries */ 6908 adapter->jump_tables[0] = kzalloc(sizeof(*adapter->jump_tables[0]), 6909 GFP_KERNEL); 6910 if (!adapter->jump_tables[0]) 6911 return -ENOMEM; 6912 adapter->jump_tables[0]->mat = ixgbe_ipv4_fields; 6913 6914 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) 6915 adapter->jump_tables[i] = NULL; 6916 6917 adapter->mac_table = kcalloc(hw->mac.num_rar_entries, 6918 sizeof(struct ixgbe_mac_addr), 6919 GFP_KERNEL); 6920 if (!adapter->mac_table) 6921 return -ENOMEM; 6922 6923 if (ixgbe_init_rss_key(adapter)) 6924 return -ENOMEM; 6925 6926 adapter->af_xdp_zc_qps = bitmap_zalloc(IXGBE_MAX_XDP_QS, GFP_KERNEL); 6927 if (!adapter->af_xdp_zc_qps) 6928 return -ENOMEM; 6929 6930 /* Set MAC specific capability flags and exceptions */ 6931 switch (hw->mac.type) { 6932 case ixgbe_mac_82598EB: 6933 adapter->flags2 &= ~IXGBE_FLAG2_RSC_CAPABLE; 6934 6935 if (hw->device_id == IXGBE_DEV_ID_82598AT) 6936 adapter->flags |= IXGBE_FLAG_FAN_FAIL_CAPABLE; 6937 6938 adapter->max_q_vectors = MAX_Q_VECTORS_82598; 6939 adapter->ring_feature[RING_F_FDIR].limit = 0; 6940 adapter->atr_sample_rate = 0; 6941 adapter->fdir_pballoc = 0; 6942#ifdef IXGBE_FCOE 6943 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6944 adapter->flags &= ~IXGBE_FLAG_FCOE_ENABLED; 6945#ifdef CONFIG_IXGBE_DCB 6946 adapter->fcoe.up = 0; 6947#endif /* IXGBE_DCB */ 6948#endif /* IXGBE_FCOE */ 6949 break; 6950 case ixgbe_mac_82599EB: 6951 if (hw->device_id == IXGBE_DEV_ID_82599_T3_LOM) 6952 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6953 break; 6954 case ixgbe_mac_X540: 6955 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 6956 if (fwsm & IXGBE_FWSM_TS_ENABLED) 6957 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6958 break; 6959 case ixgbe_mac_x550em_a: 6960 switch (hw->device_id) { 6961 case IXGBE_DEV_ID_X550EM_A_1G_T: 6962 case IXGBE_DEV_ID_X550EM_A_1G_T_L: 6963 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6964 break; 6965 default: 6966 break; 6967 } 6968 fallthrough; 6969 case ixgbe_mac_X550EM_x: 6970#ifdef CONFIG_IXGBE_DCB 6971 adapter->flags &= ~IXGBE_FLAG_DCB_CAPABLE; 6972#endif 6973#ifdef IXGBE_FCOE 6974 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 6975#ifdef CONFIG_IXGBE_DCB 6976 adapter->fcoe.up = 0; 6977#endif /* IXGBE_DCB */ 6978#endif /* IXGBE_FCOE */ 6979 fallthrough; 6980 case ixgbe_mac_X550: 6981 if (hw->mac.type == ixgbe_mac_X550) 6982 adapter->flags2 |= IXGBE_FLAG2_TEMP_SENSOR_CAPABLE; 6983#ifdef CONFIG_IXGBE_DCA 6984 adapter->flags &= ~IXGBE_FLAG_DCA_CAPABLE; 6985#endif 6986 break; 6987 default: 6988 break; 6989 } 6990 6991 /* Make sure the SWFW semaphore is in a valid state */ 6992 if (hw->mac.ops.init_swfw_sync) 6993 hw->mac.ops.init_swfw_sync(hw); 6994 6995 if (hw->mac.type == ixgbe_mac_e610) 6996 mutex_init(&hw->aci.lock); 6997 6998#ifdef IXGBE_FCOE 6999 /* FCoE support exists, always init the FCoE lock */ 7000 spin_lock_init(&adapter->fcoe.lock); 7001 7002#endif 7003 /* n-tuple support exists, always init our spinlock */ 7004 spin_lock_init(&adapter->fdir_perfect_lock); 7005 7006 /* init spinlock to avoid concurrency of VF resources */ 7007 spin_lock_init(&adapter->vfs_lock); 7008 7009#ifdef CONFIG_IXGBE_DCB 7010 ixgbe_init_dcb(adapter); 7011#endif 7012 ixgbe_init_ipsec_offload(adapter); 7013 7014 /* default flow control settings */ 7015 hw->fc.requested_mode = ixgbe_fc_full; 7016 hw->fc.current_mode = ixgbe_fc_full; /* init for ethtool output */ 7017 ixgbe_pbthresh_setup(adapter); 7018 hw->fc.pause_time = IXGBE_DEFAULT_FCPAUSE; 7019 hw->fc.send_xon = true; 7020 hw->fc.disable_fc_autoneg = ixgbe_device_supports_autoneg_fc(hw); 7021 7022#ifdef CONFIG_PCI_IOV 7023 if (max_vfs > 0) 7024 e_dev_warn("Enabling SR-IOV VFs using the max_vfs module parameter is deprecated - please use the pci sysfs interface instead.\n"); 7025 7026 /* assign number of SR-IOV VFs */ 7027 if (hw->mac.type != ixgbe_mac_82598EB) { 7028 if (max_vfs > IXGBE_MAX_VFS_DRV_LIMIT) { 7029 max_vfs = 0; 7030 e_dev_warn("max_vfs parameter out of range. Not assigning any SR-IOV VFs\n"); 7031 } 7032 } 7033#endif /* CONFIG_PCI_IOV */ 7034 7035 /* enable itr by default in dynamic mode */ 7036 adapter->rx_itr_setting = 1; 7037 adapter->tx_itr_setting = 1; 7038 7039 /* set default ring sizes */ 7040 adapter->tx_ring_count = IXGBE_DEFAULT_TXD; 7041 adapter->rx_ring_count = IXGBE_DEFAULT_RXD; 7042 7043 /* set default work limits */ 7044 adapter->tx_work_limit = IXGBE_DEFAULT_TX_WORK; 7045 7046 /* initialize eeprom parameters */ 7047 if (hw->eeprom.ops.init_params(hw)) { 7048 e_dev_err("EEPROM initialization failed\n"); 7049 return -EIO; 7050 } 7051 7052 /* PF holds first pool slot */ 7053 set_bit(0, adapter->fwd_bitmask); 7054 set_bit(__IXGBE_DOWN, &adapter->state); 7055 7056 /* enable locking for XDP_TX if we have more CPUs than queues */ 7057 if (nr_cpu_ids > IXGBE_MAX_XDP_QS) 7058 static_branch_enable(&ixgbe_xdp_locking_key); 7059 7060 return 0; 7061} 7062 7063/** 7064 * ixgbe_setup_tx_resources - allocate Tx resources (Descriptors) 7065 * @tx_ring: tx descriptor ring (for a specific queue) to setup 7066 * 7067 * Return 0 on success, negative on failure 7068 **/ 7069int ixgbe_setup_tx_resources(struct ixgbe_ring *tx_ring) 7070{ 7071 struct device *dev = tx_ring->dev; 7072 int orig_node = dev_to_node(dev); 7073 int ring_node = NUMA_NO_NODE; 7074 int size; 7075 7076 size = sizeof(struct ixgbe_tx_buffer) * tx_ring->count; 7077 7078 if (tx_ring->q_vector) 7079 ring_node = tx_ring->q_vector->numa_node; 7080 7081 tx_ring->tx_buffer_info = vmalloc_node(size, ring_node); 7082 if (!tx_ring->tx_buffer_info) 7083 tx_ring->tx_buffer_info = vmalloc(size); 7084 if (!tx_ring->tx_buffer_info) 7085 goto err; 7086 7087 /* round up to nearest 4K */ 7088 tx_ring->size = tx_ring->count * sizeof(union ixgbe_adv_tx_desc); 7089 tx_ring->size = ALIGN(tx_ring->size, 4096); 7090 7091 set_dev_node(dev, ring_node); 7092 tx_ring->desc = dma_alloc_coherent(dev, 7093 tx_ring->size, 7094 &tx_ring->dma, 7095 GFP_KERNEL); 7096 set_dev_node(dev, orig_node); 7097 if (!tx_ring->desc) 7098 tx_ring->desc = dma_alloc_coherent(dev, tx_ring->size, 7099 &tx_ring->dma, GFP_KERNEL); 7100 if (!tx_ring->desc) 7101 goto err; 7102 7103 tx_ring->next_to_use = 0; 7104 tx_ring->next_to_clean = 0; 7105 return 0; 7106 7107err: 7108 vfree(tx_ring->tx_buffer_info); 7109 tx_ring->tx_buffer_info = NULL; 7110 dev_err(dev, "Unable to allocate memory for the Tx descriptor ring\n"); 7111 return -ENOMEM; 7112} 7113 7114/** 7115 * ixgbe_setup_all_tx_resources - allocate all queues Tx resources 7116 * @adapter: board private structure 7117 * 7118 * If this function returns with an error, then it's possible one or 7119 * more of the rings is populated (while the rest are not). It is the 7120 * callers duty to clean those orphaned rings. 7121 * 7122 * Return 0 on success, negative on failure 7123 **/ 7124static int ixgbe_setup_all_tx_resources(struct ixgbe_adapter *adapter) 7125{ 7126 int i, j = 0, err = 0; 7127 7128 for (i = 0; i < adapter->num_tx_queues; i++) { 7129 err = ixgbe_setup_tx_resources(adapter->tx_ring[i]); 7130 if (!err) 7131 continue; 7132 7133 e_err(probe, "Allocation for Tx Queue %u failed\n", i); 7134 goto err_setup_tx; 7135 } 7136 for (j = 0; j < adapter->num_xdp_queues; j++) { 7137 err = ixgbe_setup_tx_resources(adapter->xdp_ring[j]); 7138 if (!err) 7139 continue; 7140 7141 e_err(probe, "Allocation for Tx Queue %u failed\n", j); 7142 goto err_setup_tx; 7143 } 7144 7145 return 0; 7146err_setup_tx: 7147 /* rewind the index freeing the rings as we go */ 7148 while (j--) 7149 ixgbe_free_tx_resources(adapter->xdp_ring[j]); 7150 while (i--) 7151 ixgbe_free_tx_resources(adapter->tx_ring[i]); 7152 return err; 7153} 7154 7155static int ixgbe_rx_napi_id(struct ixgbe_ring *rx_ring) 7156{ 7157 struct ixgbe_q_vector *q_vector = rx_ring->q_vector; 7158 7159 return q_vector ? q_vector->napi.napi_id : 0; 7160} 7161 7162/** 7163 * ixgbe_setup_rx_resources - allocate Rx resources (Descriptors) 7164 * @adapter: pointer to ixgbe_adapter 7165 * @rx_ring: rx descriptor ring (for a specific queue) to setup 7166 * 7167 * Returns 0 on success, negative on failure 7168 **/ 7169int ixgbe_setup_rx_resources(struct ixgbe_adapter *adapter, 7170 struct ixgbe_ring *rx_ring) 7171{ 7172 struct device *dev = rx_ring->dev; 7173 int orig_node = dev_to_node(dev); 7174 int ring_node = NUMA_NO_NODE; 7175 int size; 7176 7177 size = sizeof(struct ixgbe_rx_buffer) * rx_ring->count; 7178 7179 if (rx_ring->q_vector) 7180 ring_node = rx_ring->q_vector->numa_node; 7181 7182 rx_ring->rx_buffer_info = vmalloc_node(size, ring_node); 7183 if (!rx_ring->rx_buffer_info) 7184 rx_ring->rx_buffer_info = vmalloc(size); 7185 if (!rx_ring->rx_buffer_info) 7186 goto err; 7187 7188 /* Round up to nearest 4K */ 7189 rx_ring->size = rx_ring->count * sizeof(union ixgbe_adv_rx_desc); 7190 rx_ring->size = ALIGN(rx_ring->size, 4096); 7191 7192 set_dev_node(dev, ring_node); 7193 rx_ring->desc = dma_alloc_coherent(dev, 7194 rx_ring->size, 7195 &rx_ring->dma, 7196 GFP_KERNEL); 7197 set_dev_node(dev, orig_node); 7198 if (!rx_ring->desc) 7199 rx_ring->desc = dma_alloc_coherent(dev, rx_ring->size, 7200 &rx_ring->dma, GFP_KERNEL); 7201 if (!rx_ring->desc) 7202 goto err; 7203 7204 rx_ring->next_to_clean = 0; 7205 rx_ring->next_to_use = 0; 7206 7207 /* XDP RX-queue info */ 7208 if (xdp_rxq_info_reg(&rx_ring->xdp_rxq, adapter->netdev, 7209 rx_ring->queue_index, ixgbe_rx_napi_id(rx_ring)) < 0) 7210 goto err; 7211 7212 WRITE_ONCE(rx_ring->xdp_prog, adapter->xdp_prog); 7213 7214 return 0; 7215err: 7216 vfree(rx_ring->rx_buffer_info); 7217 rx_ring->rx_buffer_info = NULL; 7218 dev_err(dev, "Unable to allocate memory for the Rx descriptor ring\n"); 7219 return -ENOMEM; 7220} 7221 7222/** 7223 * ixgbe_setup_all_rx_resources - allocate all queues Rx resources 7224 * @adapter: board private structure 7225 * 7226 * If this function returns with an error, then it's possible one or 7227 * more of the rings is populated (while the rest are not). It is the 7228 * callers duty to clean those orphaned rings. 7229 * 7230 * Return 0 on success, negative on failure 7231 **/ 7232static int ixgbe_setup_all_rx_resources(struct ixgbe_adapter *adapter) 7233{ 7234 int i, err = 0; 7235 7236 for (i = 0; i < adapter->num_rx_queues; i++) { 7237 err = ixgbe_setup_rx_resources(adapter, adapter->rx_ring[i]); 7238 if (!err) 7239 continue; 7240 7241 e_err(probe, "Allocation for Rx Queue %u failed\n", i); 7242 goto err_setup_rx; 7243 } 7244 7245#ifdef IXGBE_FCOE 7246 err = ixgbe_setup_fcoe_ddp_resources(adapter); 7247 if (!err) 7248#endif 7249 return 0; 7250err_setup_rx: 7251 /* rewind the index freeing the rings as we go */ 7252 while (i--) 7253 ixgbe_free_rx_resources(adapter->rx_ring[i]); 7254 return err; 7255} 7256 7257/** 7258 * ixgbe_free_tx_resources - Free Tx Resources per Queue 7259 * @tx_ring: Tx descriptor ring for a specific queue 7260 * 7261 * Free all transmit software resources 7262 **/ 7263void ixgbe_free_tx_resources(struct ixgbe_ring *tx_ring) 7264{ 7265 ixgbe_clean_tx_ring(tx_ring); 7266 7267 vfree(tx_ring->tx_buffer_info); 7268 tx_ring->tx_buffer_info = NULL; 7269 7270 /* if not set, then don't free */ 7271 if (!tx_ring->desc) 7272 return; 7273 7274 dma_free_coherent(tx_ring->dev, tx_ring->size, 7275 tx_ring->desc, tx_ring->dma); 7276 7277 tx_ring->desc = NULL; 7278} 7279 7280/** 7281 * ixgbe_free_all_tx_resources - Free Tx Resources for All Queues 7282 * @adapter: board private structure 7283 * 7284 * Free all transmit software resources 7285 **/ 7286static void ixgbe_free_all_tx_resources(struct ixgbe_adapter *adapter) 7287{ 7288 int i; 7289 7290 for (i = 0; i < adapter->num_tx_queues; i++) 7291 if (adapter->tx_ring[i]->desc) 7292 ixgbe_free_tx_resources(adapter->tx_ring[i]); 7293 for (i = 0; i < adapter->num_xdp_queues; i++) 7294 if (adapter->xdp_ring[i]->desc) 7295 ixgbe_free_tx_resources(adapter->xdp_ring[i]); 7296} 7297 7298/** 7299 * ixgbe_free_rx_resources - Free Rx Resources 7300 * @rx_ring: ring to clean the resources from 7301 * 7302 * Free all receive software resources 7303 **/ 7304void ixgbe_free_rx_resources(struct ixgbe_ring *rx_ring) 7305{ 7306 ixgbe_clean_rx_ring(rx_ring); 7307 7308 rx_ring->xdp_prog = NULL; 7309 xdp_rxq_info_unreg(&rx_ring->xdp_rxq); 7310 vfree(rx_ring->rx_buffer_info); 7311 rx_ring->rx_buffer_info = NULL; 7312 7313 /* if not set, then don't free */ 7314 if (!rx_ring->desc) 7315 return; 7316 7317 dma_free_coherent(rx_ring->dev, rx_ring->size, 7318 rx_ring->desc, rx_ring->dma); 7319 7320 rx_ring->desc = NULL; 7321} 7322 7323/** 7324 * ixgbe_free_all_rx_resources - Free Rx Resources for All Queues 7325 * @adapter: board private structure 7326 * 7327 * Free all receive software resources 7328 **/ 7329static void ixgbe_free_all_rx_resources(struct ixgbe_adapter *adapter) 7330{ 7331 int i; 7332 7333#ifdef IXGBE_FCOE 7334 ixgbe_free_fcoe_ddp_resources(adapter); 7335 7336#endif 7337 for (i = 0; i < adapter->num_rx_queues; i++) 7338 if (adapter->rx_ring[i]->desc) 7339 ixgbe_free_rx_resources(adapter->rx_ring[i]); 7340} 7341 7342/** 7343 * ixgbe_max_xdp_frame_size - returns the maximum allowed frame size for XDP 7344 * @adapter: device handle, pointer to adapter 7345 */ 7346static int ixgbe_max_xdp_frame_size(struct ixgbe_adapter *adapter) 7347{ 7348 if (PAGE_SIZE >= 8192 || adapter->flags2 & IXGBE_FLAG2_RX_LEGACY) 7349 return IXGBE_RXBUFFER_2K; 7350 else 7351 return IXGBE_RXBUFFER_3K; 7352} 7353 7354/** 7355 * ixgbe_change_mtu - Change the Maximum Transfer Unit 7356 * @netdev: network interface device structure 7357 * @new_mtu: new value for maximum frame size 7358 * 7359 * Returns 0 on success, negative on failure 7360 **/ 7361static int ixgbe_change_mtu(struct net_device *netdev, int new_mtu) 7362{ 7363 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 7364 7365 if (ixgbe_enabled_xdp_adapter(adapter)) { 7366 int new_frame_size = new_mtu + IXGBE_PKT_HDR_PAD; 7367 7368 if (new_frame_size > ixgbe_max_xdp_frame_size(adapter)) { 7369 e_warn(probe, "Requested MTU size is not supported with XDP\n"); 7370 return -EINVAL; 7371 } 7372 } 7373 7374 /* 7375 * For 82599EB we cannot allow legacy VFs to enable their receive 7376 * paths when MTU greater than 1500 is configured. So display a 7377 * warning that legacy VFs will be disabled. 7378 */ 7379 if ((adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) && 7380 (adapter->hw.mac.type == ixgbe_mac_82599EB) && 7381 (new_mtu > ETH_DATA_LEN)) 7382 e_warn(probe, "Setting MTU > 1500 will disable legacy VFs\n"); 7383 7384 netdev_dbg(netdev, "changing MTU from %d to %d\n", 7385 netdev->mtu, new_mtu); 7386 7387 /* must set new MTU before calling down or up */ 7388 WRITE_ONCE(netdev->mtu, new_mtu); 7389 7390 if (netif_running(netdev)) 7391 ixgbe_reinit_locked(adapter); 7392 7393 return 0; 7394} 7395 7396/** 7397 * ixgbe_open - Called when a network interface is made active 7398 * @netdev: network interface device structure 7399 * 7400 * Returns 0 on success, negative value on failure 7401 * 7402 * The open entry point is called when a network interface is made 7403 * active by the system (IFF_UP). At this point all resources needed 7404 * for transmit and receive operations are allocated, the interrupt 7405 * handler is registered with the OS, the watchdog timer is started, 7406 * and the stack is notified that the interface is ready. 7407 **/ 7408int ixgbe_open(struct net_device *netdev) 7409{ 7410 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 7411 struct ixgbe_hw *hw = &adapter->hw; 7412 int err, queues; 7413 7414 /* disallow open during test */ 7415 if (test_bit(__IXGBE_TESTING, &adapter->state)) 7416 return -EBUSY; 7417 7418 netif_carrier_off(netdev); 7419 7420 /* allocate transmit descriptors */ 7421 err = ixgbe_setup_all_tx_resources(adapter); 7422 if (err) 7423 goto err_setup_tx; 7424 7425 /* allocate receive descriptors */ 7426 err = ixgbe_setup_all_rx_resources(adapter); 7427 if (err) 7428 goto err_setup_rx; 7429 7430 ixgbe_configure(adapter); 7431 7432 err = ixgbe_request_irq(adapter); 7433 if (err) 7434 goto err_req_irq; 7435 7436 /* Notify the stack of the actual queue counts. */ 7437 queues = adapter->num_tx_queues; 7438 err = netif_set_real_num_tx_queues(netdev, queues); 7439 if (err) 7440 goto err_set_queues; 7441 7442 queues = adapter->num_rx_queues; 7443 err = netif_set_real_num_rx_queues(netdev, queues); 7444 if (err) 7445 goto err_set_queues; 7446 7447 ixgbe_ptp_init(adapter); 7448 7449 ixgbe_up_complete(adapter); 7450 7451 udp_tunnel_nic_reset_ntf(netdev); 7452 if (adapter->hw.mac.type == ixgbe_mac_e610) { 7453 int err = ixgbe_update_link_info(&adapter->hw); 7454 7455 if (err) 7456 e_dev_err("Failed to update link info, err %d.\n", err); 7457 7458 ixgbe_check_link_cfg_err(adapter, 7459 adapter->hw.link.link_info.link_cfg_err); 7460 7461 err = ixgbe_non_sfp_link_config(&adapter->hw); 7462 if (err) 7463 e_dev_err("Link setup failed, err %d.\n", err); 7464 } 7465 7466 return 0; 7467 7468err_set_queues: 7469 ixgbe_free_irq(adapter); 7470err_req_irq: 7471 ixgbe_free_all_rx_resources(adapter); 7472 if (hw->phy.ops.set_phy_power && !adapter->wol) 7473 hw->phy.ops.set_phy_power(&adapter->hw, false); 7474err_setup_rx: 7475 ixgbe_free_all_tx_resources(adapter); 7476err_setup_tx: 7477 ixgbe_reset(adapter); 7478 7479 return err; 7480} 7481 7482static void ixgbe_close_suspend(struct ixgbe_adapter *adapter) 7483{ 7484 ixgbe_ptp_suspend(adapter); 7485 7486 if (adapter->hw.phy.ops.enter_lplu) { 7487 adapter->hw.phy.reset_disable = true; 7488 ixgbe_down(adapter); 7489 adapter->hw.phy.ops.enter_lplu(&adapter->hw); 7490 adapter->hw.phy.reset_disable = false; 7491 } else { 7492 ixgbe_down(adapter); 7493 } 7494 7495 ixgbe_free_irq(adapter); 7496 7497 ixgbe_free_all_tx_resources(adapter); 7498 ixgbe_free_all_rx_resources(adapter); 7499} 7500 7501/** 7502 * ixgbe_close - Disables a network interface 7503 * @netdev: network interface device structure 7504 * 7505 * Returns 0, this is not allowed to fail 7506 * 7507 * The close entry point is called when an interface is de-activated 7508 * by the OS. The hardware is still under the drivers control, but 7509 * needs to be disabled. A global MAC reset is issued to stop the 7510 * hardware, and all transmit and receive resources are freed. 7511 **/ 7512int ixgbe_close(struct net_device *netdev) 7513{ 7514 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 7515 7516 ixgbe_ptp_stop(adapter); 7517 7518 if (netif_device_present(netdev)) 7519 ixgbe_close_suspend(adapter); 7520 7521 ixgbe_fdir_filter_exit(adapter); 7522 7523 ixgbe_release_hw_control(adapter); 7524 7525 return 0; 7526} 7527 7528static int ixgbe_resume(struct device *dev_d) 7529{ 7530 struct pci_dev *pdev = to_pci_dev(dev_d); 7531 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 7532 struct net_device *netdev = adapter->netdev; 7533 u32 err; 7534 7535 adapter->hw.hw_addr = adapter->io_addr; 7536 7537 err = pci_enable_device_mem(pdev); 7538 if (err) { 7539 e_dev_err("Cannot enable PCI device from suspend\n"); 7540 return err; 7541 } 7542 smp_mb__before_atomic(); 7543 clear_bit(__IXGBE_DISABLED, &adapter->state); 7544 pci_set_master(pdev); 7545 7546 device_wakeup_disable(dev_d); 7547 7548 ixgbe_reset(adapter); 7549 7550 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 7551 7552 rtnl_lock(); 7553 err = ixgbe_init_interrupt_scheme(adapter); 7554 if (!err && netif_running(netdev)) 7555 err = ixgbe_open(netdev); 7556 7557 7558 if (!err) 7559 netif_device_attach(netdev); 7560 rtnl_unlock(); 7561 7562 return err; 7563} 7564 7565static int __ixgbe_shutdown(struct pci_dev *pdev, bool *enable_wake) 7566{ 7567 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 7568 struct net_device *netdev = adapter->netdev; 7569 struct ixgbe_hw *hw = &adapter->hw; 7570 u32 ctrl; 7571 u32 wufc = adapter->wol; 7572 7573 rtnl_lock(); 7574 netif_device_detach(netdev); 7575 7576 if (netif_running(netdev)) 7577 ixgbe_close_suspend(adapter); 7578 7579 ixgbe_clear_interrupt_scheme(adapter); 7580 rtnl_unlock(); 7581 7582 if (hw->mac.ops.stop_link_on_d3) 7583 hw->mac.ops.stop_link_on_d3(hw); 7584 7585 if (wufc) { 7586 u32 fctrl; 7587 7588 ixgbe_set_rx_mode(netdev); 7589 7590 /* enable the optics for 82599 SFP+ fiber as we can WoL */ 7591 if (hw->mac.ops.enable_tx_laser) 7592 hw->mac.ops.enable_tx_laser(hw); 7593 7594 /* enable the reception of multicast packets */ 7595 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 7596 fctrl |= IXGBE_FCTRL_MPE; 7597 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl); 7598 7599 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL); 7600 ctrl |= IXGBE_CTRL_GIO_DIS; 7601 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl); 7602 7603 IXGBE_WRITE_REG(hw, IXGBE_WUFC, wufc); 7604 } else { 7605 IXGBE_WRITE_REG(hw, IXGBE_WUC, 0); 7606 IXGBE_WRITE_REG(hw, IXGBE_WUFC, 0); 7607 } 7608 7609 switch (hw->mac.type) { 7610 case ixgbe_mac_82598EB: 7611 pci_wake_from_d3(pdev, false); 7612 break; 7613 case ixgbe_mac_82599EB: 7614 case ixgbe_mac_X540: 7615 case ixgbe_mac_X550: 7616 case ixgbe_mac_X550EM_x: 7617 case ixgbe_mac_x550em_a: 7618 case ixgbe_mac_e610: 7619 pci_wake_from_d3(pdev, !!wufc); 7620 break; 7621 default: 7622 break; 7623 } 7624 7625 *enable_wake = !!wufc; 7626 if (hw->phy.ops.set_phy_power && !*enable_wake) 7627 hw->phy.ops.set_phy_power(hw, false); 7628 7629 ixgbe_release_hw_control(adapter); 7630 7631 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 7632 pci_disable_device(pdev); 7633 7634 return 0; 7635} 7636 7637static int ixgbe_suspend(struct device *dev_d) 7638{ 7639 struct pci_dev *pdev = to_pci_dev(dev_d); 7640 int retval; 7641 bool wake; 7642 7643 retval = __ixgbe_shutdown(pdev, &wake); 7644 7645 device_set_wakeup_enable(dev_d, wake); 7646 7647 return retval; 7648} 7649 7650static void ixgbe_shutdown(struct pci_dev *pdev) 7651{ 7652 bool wake; 7653 7654 __ixgbe_shutdown(pdev, &wake); 7655 7656 if (system_state == SYSTEM_POWER_OFF) { 7657 pci_wake_from_d3(pdev, wake); 7658 pci_set_power_state(pdev, PCI_D3hot); 7659 } 7660} 7661 7662/** 7663 * ixgbe_update_stats - Update the board statistics counters. 7664 * @adapter: board private structure 7665 **/ 7666void ixgbe_update_stats(struct ixgbe_adapter *adapter) 7667{ 7668 struct net_device *netdev = adapter->netdev; 7669 struct ixgbe_hw *hw = &adapter->hw; 7670 struct ixgbe_hw_stats *hwstats = &adapter->stats; 7671 u64 total_mpc = 0; 7672 u32 i, missed_rx = 0, mpc, bprc, lxon, lxoff, xon_off_tot; 7673 u64 non_eop_descs = 0, restart_queue = 0, tx_busy = 0; 7674 u64 alloc_rx_page_failed = 0, alloc_rx_buff_failed = 0; 7675 u64 alloc_rx_page = 0; 7676 u64 bytes = 0, packets = 0, hw_csum_rx_error = 0; 7677 7678 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7679 test_bit(__IXGBE_RESETTING, &adapter->state)) 7680 return; 7681 7682 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) { 7683 u64 rsc_count = 0; 7684 u64 rsc_flush = 0; 7685 for (i = 0; i < adapter->num_rx_queues; i++) { 7686 rsc_count += adapter->rx_ring[i]->rx_stats.rsc_count; 7687 rsc_flush += adapter->rx_ring[i]->rx_stats.rsc_flush; 7688 } 7689 adapter->rsc_total_count = rsc_count; 7690 adapter->rsc_total_flush = rsc_flush; 7691 } 7692 7693 for (i = 0; i < adapter->num_rx_queues; i++) { 7694 struct ixgbe_ring *rx_ring = READ_ONCE(adapter->rx_ring[i]); 7695 7696 if (!rx_ring) 7697 continue; 7698 non_eop_descs += rx_ring->rx_stats.non_eop_descs; 7699 alloc_rx_page += rx_ring->rx_stats.alloc_rx_page; 7700 alloc_rx_page_failed += rx_ring->rx_stats.alloc_rx_page_failed; 7701 alloc_rx_buff_failed += rx_ring->rx_stats.alloc_rx_buff_failed; 7702 hw_csum_rx_error += rx_ring->rx_stats.csum_err; 7703 bytes += rx_ring->stats.bytes; 7704 packets += rx_ring->stats.packets; 7705 } 7706 adapter->non_eop_descs = non_eop_descs; 7707 adapter->alloc_rx_page = alloc_rx_page; 7708 adapter->alloc_rx_page_failed = alloc_rx_page_failed; 7709 adapter->alloc_rx_buff_failed = alloc_rx_buff_failed; 7710 adapter->hw_csum_rx_error = hw_csum_rx_error; 7711 netdev->stats.rx_bytes = bytes; 7712 netdev->stats.rx_packets = packets; 7713 7714 bytes = 0; 7715 packets = 0; 7716 /* gather some stats to the adapter struct that are per queue */ 7717 for (i = 0; i < adapter->num_tx_queues; i++) { 7718 struct ixgbe_ring *tx_ring = READ_ONCE(adapter->tx_ring[i]); 7719 7720 if (!tx_ring) 7721 continue; 7722 restart_queue += tx_ring->tx_stats.restart_queue; 7723 tx_busy += tx_ring->tx_stats.tx_busy; 7724 bytes += tx_ring->stats.bytes; 7725 packets += tx_ring->stats.packets; 7726 } 7727 for (i = 0; i < adapter->num_xdp_queues; i++) { 7728 struct ixgbe_ring *xdp_ring = READ_ONCE(adapter->xdp_ring[i]); 7729 7730 if (!xdp_ring) 7731 continue; 7732 restart_queue += xdp_ring->tx_stats.restart_queue; 7733 tx_busy += xdp_ring->tx_stats.tx_busy; 7734 bytes += xdp_ring->stats.bytes; 7735 packets += xdp_ring->stats.packets; 7736 } 7737 adapter->restart_queue = restart_queue; 7738 adapter->tx_busy = tx_busy; 7739 netdev->stats.tx_bytes = bytes; 7740 netdev->stats.tx_packets = packets; 7741 7742 hwstats->crcerrs += IXGBE_READ_REG(hw, IXGBE_CRCERRS); 7743 7744 /* 8 register reads */ 7745 for (i = 0; i < 8; i++) { 7746 /* for packet buffers not used, the register should read 0 */ 7747 mpc = IXGBE_READ_REG(hw, IXGBE_MPC(i)); 7748 missed_rx += mpc; 7749 hwstats->mpc[i] += mpc; 7750 total_mpc += hwstats->mpc[i]; 7751 hwstats->pxontxc[i] += IXGBE_READ_REG(hw, IXGBE_PXONTXC(i)); 7752 hwstats->pxofftxc[i] += IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i)); 7753 switch (hw->mac.type) { 7754 case ixgbe_mac_82598EB: 7755 hwstats->rnbc[i] += IXGBE_READ_REG(hw, IXGBE_RNBC(i)); 7756 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC(i)); 7757 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC(i)); 7758 hwstats->pxonrxc[i] += 7759 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i)); 7760 break; 7761 case ixgbe_mac_82599EB: 7762 case ixgbe_mac_X540: 7763 case ixgbe_mac_X550: 7764 case ixgbe_mac_X550EM_x: 7765 case ixgbe_mac_x550em_a: 7766 case ixgbe_mac_e610: 7767 hwstats->pxonrxc[i] += 7768 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i)); 7769 break; 7770 default: 7771 break; 7772 } 7773 } 7774 7775 /*16 register reads */ 7776 for (i = 0; i < 16; i++) { 7777 hwstats->qptc[i] += IXGBE_READ_REG(hw, IXGBE_QPTC(i)); 7778 hwstats->qprc[i] += IXGBE_READ_REG(hw, IXGBE_QPRC(i)); 7779 if (hw->mac.type == ixgbe_mac_82599EB || 7780 hw->mac.type == ixgbe_mac_X540 || 7781 hw->mac.type == ixgbe_mac_X550 || 7782 hw->mac.type == ixgbe_mac_X550EM_x || 7783 hw->mac.type == ixgbe_mac_x550em_a || 7784 hw->mac.type == ixgbe_mac_e610) { 7785 hwstats->qbtc[i] += IXGBE_READ_REG(hw, IXGBE_QBTC_L(i)); 7786 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i)); /* to clear */ 7787 hwstats->qbrc[i] += IXGBE_READ_REG(hw, IXGBE_QBRC_L(i)); 7788 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i)); /* to clear */ 7789 } 7790 } 7791 7792 hwstats->gprc += IXGBE_READ_REG(hw, IXGBE_GPRC); 7793 /* work around hardware counting issue */ 7794 hwstats->gprc -= missed_rx; 7795 7796 ixgbe_update_xoff_received(adapter); 7797 7798 /* 82598 hardware only has a 32 bit counter in the high register */ 7799 switch (hw->mac.type) { 7800 case ixgbe_mac_82598EB: 7801 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXC); 7802 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCH); 7803 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCH); 7804 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORH); 7805 break; 7806 case ixgbe_mac_X540: 7807 case ixgbe_mac_X550: 7808 case ixgbe_mac_X550EM_x: 7809 case ixgbe_mac_x550em_a: 7810 case ixgbe_mac_e610: 7811 /* OS2BMC stats are X540 and later */ 7812 hwstats->o2bgptc += IXGBE_READ_REG(hw, IXGBE_O2BGPTC); 7813 hwstats->o2bspc += IXGBE_READ_REG(hw, IXGBE_O2BSPC); 7814 hwstats->b2ospc += IXGBE_READ_REG(hw, IXGBE_B2OSPC); 7815 hwstats->b2ogprc += IXGBE_READ_REG(hw, IXGBE_B2OGPRC); 7816 fallthrough; 7817 case ixgbe_mac_82599EB: 7818 for (i = 0; i < 16; i++) 7819 adapter->hw_rx_no_dma_resources += 7820 IXGBE_READ_REG(hw, IXGBE_QPRDC(i)); 7821 hwstats->gorc += IXGBE_READ_REG(hw, IXGBE_GORCL); 7822 IXGBE_READ_REG(hw, IXGBE_GORCH); /* to clear */ 7823 hwstats->gotc += IXGBE_READ_REG(hw, IXGBE_GOTCL); 7824 IXGBE_READ_REG(hw, IXGBE_GOTCH); /* to clear */ 7825 hwstats->tor += IXGBE_READ_REG(hw, IXGBE_TORL); 7826 IXGBE_READ_REG(hw, IXGBE_TORH); /* to clear */ 7827 hwstats->lxonrxc += IXGBE_READ_REG(hw, IXGBE_LXONRXCNT); 7828 hwstats->fdirmatch += IXGBE_READ_REG(hw, IXGBE_FDIRMATCH); 7829 hwstats->fdirmiss += IXGBE_READ_REG(hw, IXGBE_FDIRMISS); 7830#ifdef IXGBE_FCOE 7831 hwstats->fccrc += IXGBE_READ_REG(hw, IXGBE_FCCRC); 7832 hwstats->fcoerpdc += IXGBE_READ_REG(hw, IXGBE_FCOERPDC); 7833 hwstats->fcoeprc += IXGBE_READ_REG(hw, IXGBE_FCOEPRC); 7834 hwstats->fcoeptc += IXGBE_READ_REG(hw, IXGBE_FCOEPTC); 7835 hwstats->fcoedwrc += IXGBE_READ_REG(hw, IXGBE_FCOEDWRC); 7836 hwstats->fcoedwtc += IXGBE_READ_REG(hw, IXGBE_FCOEDWTC); 7837 /* Add up per cpu counters for total ddp aloc fail */ 7838 if (adapter->fcoe.ddp_pool) { 7839 struct ixgbe_fcoe *fcoe = &adapter->fcoe; 7840 struct ixgbe_fcoe_ddp_pool *ddp_pool; 7841 unsigned int cpu; 7842 u64 noddp = 0, noddp_ext_buff = 0; 7843 for_each_possible_cpu(cpu) { 7844 ddp_pool = per_cpu_ptr(fcoe->ddp_pool, cpu); 7845 noddp += ddp_pool->noddp; 7846 noddp_ext_buff += ddp_pool->noddp_ext_buff; 7847 } 7848 hwstats->fcoe_noddp = noddp; 7849 hwstats->fcoe_noddp_ext_buff = noddp_ext_buff; 7850 } 7851#endif /* IXGBE_FCOE */ 7852 break; 7853 default: 7854 break; 7855 } 7856 bprc = IXGBE_READ_REG(hw, IXGBE_BPRC); 7857 hwstats->bprc += bprc; 7858 hwstats->mprc += IXGBE_READ_REG(hw, IXGBE_MPRC); 7859 if (hw->mac.type == ixgbe_mac_82598EB) 7860 hwstats->mprc -= bprc; 7861 hwstats->roc += IXGBE_READ_REG(hw, IXGBE_ROC); 7862 hwstats->prc64 += IXGBE_READ_REG(hw, IXGBE_PRC64); 7863 hwstats->prc127 += IXGBE_READ_REG(hw, IXGBE_PRC127); 7864 hwstats->prc255 += IXGBE_READ_REG(hw, IXGBE_PRC255); 7865 hwstats->prc511 += IXGBE_READ_REG(hw, IXGBE_PRC511); 7866 hwstats->prc1023 += IXGBE_READ_REG(hw, IXGBE_PRC1023); 7867 hwstats->prc1522 += IXGBE_READ_REG(hw, IXGBE_PRC1522); 7868 hwstats->rlec += IXGBE_READ_REG(hw, IXGBE_RLEC); 7869 lxon = IXGBE_READ_REG(hw, IXGBE_LXONTXC); 7870 hwstats->lxontxc += lxon; 7871 lxoff = IXGBE_READ_REG(hw, IXGBE_LXOFFTXC); 7872 hwstats->lxofftxc += lxoff; 7873 hwstats->gptc += IXGBE_READ_REG(hw, IXGBE_GPTC); 7874 hwstats->mptc += IXGBE_READ_REG(hw, IXGBE_MPTC); 7875 /* 7876 * 82598 errata - tx of flow control packets is included in tx counters 7877 */ 7878 xon_off_tot = lxon + lxoff; 7879 hwstats->gptc -= xon_off_tot; 7880 hwstats->mptc -= xon_off_tot; 7881 hwstats->gotc -= (xon_off_tot * (ETH_ZLEN + ETH_FCS_LEN)); 7882 hwstats->ruc += IXGBE_READ_REG(hw, IXGBE_RUC); 7883 hwstats->rfc += IXGBE_READ_REG(hw, IXGBE_RFC); 7884 hwstats->rjc += IXGBE_READ_REG(hw, IXGBE_RJC); 7885 hwstats->tpr += IXGBE_READ_REG(hw, IXGBE_TPR); 7886 hwstats->ptc64 += IXGBE_READ_REG(hw, IXGBE_PTC64); 7887 hwstats->ptc64 -= xon_off_tot; 7888 hwstats->ptc127 += IXGBE_READ_REG(hw, IXGBE_PTC127); 7889 hwstats->ptc255 += IXGBE_READ_REG(hw, IXGBE_PTC255); 7890 hwstats->ptc511 += IXGBE_READ_REG(hw, IXGBE_PTC511); 7891 hwstats->ptc1023 += IXGBE_READ_REG(hw, IXGBE_PTC1023); 7892 hwstats->ptc1522 += IXGBE_READ_REG(hw, IXGBE_PTC1522); 7893 hwstats->bptc += IXGBE_READ_REG(hw, IXGBE_BPTC); 7894 7895 /* Fill out the OS statistics structure */ 7896 netdev->stats.multicast = hwstats->mprc; 7897 7898 /* Rx Errors */ 7899 netdev->stats.rx_errors = hwstats->crcerrs + hwstats->rlec; 7900 netdev->stats.rx_dropped = 0; 7901 netdev->stats.rx_length_errors = hwstats->rlec; 7902 netdev->stats.rx_crc_errors = hwstats->crcerrs; 7903 netdev->stats.rx_missed_errors = total_mpc; 7904 7905 /* VF Stats Collection - skip while resetting because these 7906 * are not clear on read and otherwise you'll sometimes get 7907 * crazy values. 7908 */ 7909 if (!test_bit(__IXGBE_RESETTING, &adapter->state)) { 7910 for (i = 0; i < adapter->num_vfs; i++) { 7911 UPDATE_VF_COUNTER_32bit(IXGBE_PVFGPRC(i), 7912 adapter->vfinfo[i].last_vfstats.gprc, 7913 adapter->vfinfo[i].vfstats.gprc); 7914 UPDATE_VF_COUNTER_32bit(IXGBE_PVFGPTC(i), 7915 adapter->vfinfo[i].last_vfstats.gptc, 7916 adapter->vfinfo[i].vfstats.gptc); 7917 UPDATE_VF_COUNTER_36bit(IXGBE_PVFGORC_LSB(i), 7918 IXGBE_PVFGORC_MSB(i), 7919 adapter->vfinfo[i].last_vfstats.gorc, 7920 adapter->vfinfo[i].vfstats.gorc); 7921 UPDATE_VF_COUNTER_36bit(IXGBE_PVFGOTC_LSB(i), 7922 IXGBE_PVFGOTC_MSB(i), 7923 adapter->vfinfo[i].last_vfstats.gotc, 7924 adapter->vfinfo[i].vfstats.gotc); 7925 UPDATE_VF_COUNTER_32bit(IXGBE_PVFMPRC(i), 7926 adapter->vfinfo[i].last_vfstats.mprc, 7927 adapter->vfinfo[i].vfstats.mprc); 7928 } 7929 } 7930} 7931 7932/** 7933 * ixgbe_fdir_reinit_subtask - worker thread to reinit FDIR filter table 7934 * @adapter: pointer to the device adapter structure 7935 **/ 7936static void ixgbe_fdir_reinit_subtask(struct ixgbe_adapter *adapter) 7937{ 7938 struct ixgbe_hw *hw = &adapter->hw; 7939 int i; 7940 7941 if (!(adapter->flags2 & IXGBE_FLAG2_FDIR_REQUIRES_REINIT)) 7942 return; 7943 7944 adapter->flags2 &= ~IXGBE_FLAG2_FDIR_REQUIRES_REINIT; 7945 7946 /* if interface is down do nothing */ 7947 if (test_bit(__IXGBE_DOWN, &adapter->state)) 7948 return; 7949 7950 /* do nothing if we are not using signature filters */ 7951 if (!(adapter->flags & IXGBE_FLAG_FDIR_HASH_CAPABLE)) 7952 return; 7953 7954 adapter->fdir_overflow++; 7955 7956 if (ixgbe_reinit_fdir_tables_82599(hw) == 0) { 7957 for (i = 0; i < adapter->num_tx_queues; i++) 7958 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7959 &(adapter->tx_ring[i]->state)); 7960 for (i = 0; i < adapter->num_xdp_queues; i++) 7961 set_bit(__IXGBE_TX_FDIR_INIT_DONE, 7962 &adapter->xdp_ring[i]->state); 7963 /* re-enable flow director interrupts */ 7964 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMS_FLOW_DIR); 7965 } else { 7966 e_err(probe, "failed to finish FDIR re-initialization, " 7967 "ignored adding FDIR ATR filters\n"); 7968 } 7969} 7970 7971/** 7972 * ixgbe_check_hang_subtask - check for hung queues and dropped interrupts 7973 * @adapter: pointer to the device adapter structure 7974 * 7975 * This function serves two purposes. First it strobes the interrupt lines 7976 * in order to make certain interrupts are occurring. Secondly it sets the 7977 * bits needed to check for TX hangs. As a result we should immediately 7978 * determine if a hang has occurred. 7979 */ 7980static void ixgbe_check_hang_subtask(struct ixgbe_adapter *adapter) 7981{ 7982 struct ixgbe_hw *hw = &adapter->hw; 7983 u64 eics = 0; 7984 int i; 7985 7986 /* If we're down, removing or resetting, just bail */ 7987 if (test_bit(__IXGBE_DOWN, &adapter->state) || 7988 test_bit(__IXGBE_REMOVING, &adapter->state) || 7989 test_bit(__IXGBE_RESETTING, &adapter->state)) 7990 return; 7991 7992 /* Force detection of hung controller */ 7993 if (netif_carrier_ok(adapter->netdev)) 7994 for (i = 0; i < adapter->num_tx_queues; i++) 7995 set_check_for_tx_hang(adapter->tx_ring[i]); 7996 7997 if (!(adapter->flags & IXGBE_FLAG_MSIX_ENABLED)) { 7998 /* 7999 * for legacy and MSI interrupts don't set any bits 8000 * that are enabled for EIAM, because this operation 8001 * would set *both* EIMS and EICS for any bit in EIAM 8002 */ 8003 IXGBE_WRITE_REG(hw, IXGBE_EICS, 8004 (IXGBE_EICS_TCP_TIMER | IXGBE_EICS_OTHER)); 8005 } else { 8006 /* get one bit for every active tx/rx interrupt vector */ 8007 for (i = 0; i < adapter->num_q_vectors; i++) { 8008 struct ixgbe_q_vector *qv = adapter->q_vector[i]; 8009 if (qv->rx.ring || qv->tx.ring) 8010 eics |= BIT_ULL(i); 8011 } 8012 } 8013 8014 /* Cause software interrupt to ensure rings are cleaned */ 8015 ixgbe_irq_rearm_queues(adapter, eics); 8016} 8017 8018/** 8019 * ixgbe_watchdog_update_link - update the link status 8020 * @adapter: pointer to the device adapter structure 8021 **/ 8022static void ixgbe_watchdog_update_link(struct ixgbe_adapter *adapter) 8023{ 8024 struct ixgbe_hw *hw = &adapter->hw; 8025 u32 link_speed = adapter->link_speed; 8026 bool link_up = adapter->link_up; 8027 bool pfc_en = adapter->dcb_cfg.pfc_mode_enable; 8028 8029 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE)) 8030 return; 8031 8032 if (hw->mac.ops.check_link) { 8033 hw->mac.ops.check_link(hw, &link_speed, &link_up, false); 8034 } else { 8035 /* always assume link is up, if no check link function */ 8036 link_speed = IXGBE_LINK_SPEED_10GB_FULL; 8037 link_up = true; 8038 } 8039 8040 if (adapter->ixgbe_ieee_pfc) 8041 pfc_en |= !!(adapter->ixgbe_ieee_pfc->pfc_en); 8042 8043 if (link_up && !((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && pfc_en)) { 8044 hw->mac.ops.fc_enable(hw); 8045 ixgbe_set_rx_drop_en(adapter); 8046 } 8047 8048 if (link_up || 8049 time_after(jiffies, (adapter->link_check_timeout + 8050 IXGBE_TRY_LINK_TIMEOUT))) { 8051 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_UPDATE; 8052 IXGBE_WRITE_REG(hw, IXGBE_EIMS, IXGBE_EIMC_LSC); 8053 IXGBE_WRITE_FLUSH(hw); 8054 } 8055 8056 adapter->link_up = link_up; 8057 adapter->link_speed = link_speed; 8058} 8059 8060static void ixgbe_update_default_up(struct ixgbe_adapter *adapter) 8061{ 8062#ifdef CONFIG_IXGBE_DCB 8063 struct net_device *netdev = adapter->netdev; 8064 struct dcb_app app = { 8065 .selector = IEEE_8021QAZ_APP_SEL_ETHERTYPE, 8066 .protocol = 0, 8067 }; 8068 u8 up = 0; 8069 8070 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE) 8071 up = dcb_ieee_getapp_mask(netdev, &app); 8072 8073 adapter->default_up = (up > 1) ? (ffs(up) - 1) : 0; 8074#endif 8075} 8076 8077/** 8078 * ixgbe_watchdog_link_is_up - update netif_carrier status and 8079 * print link up message 8080 * @adapter: pointer to the device adapter structure 8081 **/ 8082static void ixgbe_watchdog_link_is_up(struct ixgbe_adapter *adapter) 8083{ 8084 struct net_device *netdev = adapter->netdev; 8085 struct ixgbe_hw *hw = &adapter->hw; 8086 u32 link_speed = adapter->link_speed; 8087 const char *speed_str; 8088 bool flow_rx, flow_tx; 8089 8090 /* only continue if link was previously down */ 8091 if (netif_carrier_ok(netdev)) 8092 return; 8093 8094 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 8095 8096 switch (hw->mac.type) { 8097 case ixgbe_mac_82598EB: { 8098 u32 frctl = IXGBE_READ_REG(hw, IXGBE_FCTRL); 8099 u32 rmcs = IXGBE_READ_REG(hw, IXGBE_RMCS); 8100 flow_rx = !!(frctl & IXGBE_FCTRL_RFCE); 8101 flow_tx = !!(rmcs & IXGBE_RMCS_TFCE_802_3X); 8102 } 8103 break; 8104 case ixgbe_mac_X540: 8105 case ixgbe_mac_X550: 8106 case ixgbe_mac_X550EM_x: 8107 case ixgbe_mac_x550em_a: 8108 case ixgbe_mac_e610: 8109 case ixgbe_mac_82599EB: { 8110 u32 mflcn = IXGBE_READ_REG(hw, IXGBE_MFLCN); 8111 u32 fccfg = IXGBE_READ_REG(hw, IXGBE_FCCFG); 8112 flow_rx = !!(mflcn & IXGBE_MFLCN_RFCE); 8113 flow_tx = !!(fccfg & IXGBE_FCCFG_TFCE_802_3X); 8114 } 8115 break; 8116 default: 8117 flow_tx = false; 8118 flow_rx = false; 8119 break; 8120 } 8121 8122 adapter->last_rx_ptp_check = jiffies; 8123 8124 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 8125 ixgbe_ptp_start_cyclecounter(adapter); 8126 8127 switch (link_speed) { 8128 case IXGBE_LINK_SPEED_10GB_FULL: 8129 speed_str = "10 Gbps"; 8130 break; 8131 case IXGBE_LINK_SPEED_5GB_FULL: 8132 speed_str = "5 Gbps"; 8133 break; 8134 case IXGBE_LINK_SPEED_2_5GB_FULL: 8135 speed_str = "2.5 Gbps"; 8136 break; 8137 case IXGBE_LINK_SPEED_1GB_FULL: 8138 speed_str = "1 Gbps"; 8139 break; 8140 case IXGBE_LINK_SPEED_100_FULL: 8141 speed_str = "100 Mbps"; 8142 break; 8143 case IXGBE_LINK_SPEED_10_FULL: 8144 speed_str = "10 Mbps"; 8145 break; 8146 default: 8147 speed_str = "unknown speed"; 8148 break; 8149 } 8150 e_info(drv, "NIC Link is Up %s, Flow Control: %s\n", speed_str, 8151 ((flow_rx && flow_tx) ? "RX/TX" : 8152 (flow_rx ? "RX" : 8153 (flow_tx ? "TX" : "None")))); 8154 8155 netif_carrier_on(netdev); 8156 ixgbe_check_vf_rate_limit(adapter); 8157 8158 if (adapter->num_vfs && hw->mac.ops.enable_mdd) 8159 hw->mac.ops.enable_mdd(hw); 8160 8161 /* enable transmits */ 8162 netif_tx_wake_all_queues(adapter->netdev); 8163 8164 /* update the default user priority for VFs */ 8165 ixgbe_update_default_up(adapter); 8166 8167 /* ping all the active vfs to let them know link has changed */ 8168 ixgbe_ping_all_vfs(adapter); 8169} 8170 8171/** 8172 * ixgbe_watchdog_link_is_down - update netif_carrier status and 8173 * print link down message 8174 * @adapter: pointer to the adapter structure 8175 **/ 8176static void ixgbe_watchdog_link_is_down(struct ixgbe_adapter *adapter) 8177{ 8178 struct net_device *netdev = adapter->netdev; 8179 struct ixgbe_hw *hw = &adapter->hw; 8180 8181 adapter->link_up = false; 8182 adapter->link_speed = 0; 8183 8184 /* only continue if link was up previously */ 8185 if (!netif_carrier_ok(netdev)) 8186 return; 8187 8188 adapter->link_down_events++; 8189 8190 /* poll for SFP+ cable when link is down */ 8191 if (ixgbe_is_sfp(hw) && hw->mac.type == ixgbe_mac_82598EB) 8192 adapter->flags2 |= IXGBE_FLAG2_SEARCH_FOR_SFP; 8193 8194 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) 8195 ixgbe_ptp_start_cyclecounter(adapter); 8196 8197 e_info(drv, "NIC Link is Down\n"); 8198 netif_carrier_off(netdev); 8199 8200 /* ping all the active vfs to let them know link has changed */ 8201 ixgbe_ping_all_vfs(adapter); 8202} 8203 8204static bool ixgbe_ring_tx_pending(struct ixgbe_adapter *adapter) 8205{ 8206 int i; 8207 8208 for (i = 0; i < adapter->num_tx_queues; i++) { 8209 struct ixgbe_ring *tx_ring = adapter->tx_ring[i]; 8210 8211 if (tx_ring->next_to_use != tx_ring->next_to_clean) 8212 return true; 8213 } 8214 8215 return false; 8216} 8217 8218static bool ixgbe_vf_tx_pending(struct ixgbe_adapter *adapter) 8219{ 8220 struct ixgbe_hw *hw = &adapter->hw; 8221 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 8222 u32 q_per_pool = __ALIGN_MASK(1, ~vmdq->mask); 8223 8224 int i, j; 8225 8226 if (!adapter->num_vfs) 8227 return false; 8228 8229 /* resetting the PF is only needed for MAC before X550 */ 8230 if (hw->mac.type >= ixgbe_mac_X550) 8231 return false; 8232 8233 for (i = 0; i < adapter->num_vfs; i++) { 8234 for (j = 0; j < q_per_pool; j++) { 8235 u32 h, t; 8236 8237 h = IXGBE_READ_REG(hw, IXGBE_PVFTDHN(q_per_pool, i, j)); 8238 t = IXGBE_READ_REG(hw, IXGBE_PVFTDTN(q_per_pool, i, j)); 8239 8240 if (h != t) 8241 return true; 8242 } 8243 } 8244 8245 return false; 8246} 8247 8248/** 8249 * ixgbe_watchdog_flush_tx - flush queues on link down 8250 * @adapter: pointer to the device adapter structure 8251 **/ 8252static void ixgbe_watchdog_flush_tx(struct ixgbe_adapter *adapter) 8253{ 8254 if (!netif_carrier_ok(adapter->netdev)) { 8255 if (ixgbe_ring_tx_pending(adapter) || 8256 ixgbe_vf_tx_pending(adapter)) { 8257 /* We've lost link, so the controller stops DMA, 8258 * but we've got queued Tx work that's never going 8259 * to get done, so reset controller to flush Tx. 8260 * (Do the reset outside of interrupt context). 8261 */ 8262 e_warn(drv, "initiating reset to clear Tx work after link loss\n"); 8263 set_bit(__IXGBE_RESET_REQUESTED, &adapter->state); 8264 } 8265 } 8266} 8267 8268#ifdef CONFIG_PCI_IOV 8269static void ixgbe_bad_vf_abort(struct ixgbe_adapter *adapter, u32 vf) 8270{ 8271 struct ixgbe_hw *hw = &adapter->hw; 8272 8273 if (adapter->hw.mac.type == ixgbe_mac_82599EB && 8274 adapter->flags2 & IXGBE_FLAG2_AUTO_DISABLE_VF) { 8275 adapter->vfinfo[vf].primary_abort_count++; 8276 if (adapter->vfinfo[vf].primary_abort_count == 8277 IXGBE_PRIMARY_ABORT_LIMIT) { 8278 ixgbe_set_vf_link_state(adapter, vf, 8279 IFLA_VF_LINK_STATE_DISABLE); 8280 adapter->vfinfo[vf].primary_abort_count = 0; 8281 8282 e_info(drv, 8283 "Malicious Driver Detection event detected on PF %d VF %d MAC: %pM mdd-disable-vf=on", 8284 hw->bus.func, vf, 8285 adapter->vfinfo[vf].vf_mac_addresses); 8286 } 8287 } 8288} 8289 8290static void ixgbe_check_for_bad_vf(struct ixgbe_adapter *adapter) 8291{ 8292 struct ixgbe_hw *hw = &adapter->hw; 8293 struct pci_dev *pdev = adapter->pdev; 8294 unsigned int vf; 8295 u32 gpc; 8296 8297 if (!(netif_carrier_ok(adapter->netdev))) 8298 return; 8299 8300 gpc = IXGBE_READ_REG(hw, IXGBE_TXDGPC); 8301 if (gpc) /* If incrementing then no need for the check below */ 8302 return; 8303 /* Check to see if a bad DMA write target from an errant or 8304 * malicious VF has caused a PCIe error. If so then we can 8305 * issue a VFLR to the offending VF(s) and then resume without 8306 * requesting a full slot reset. 8307 */ 8308 8309 if (!pdev) 8310 return; 8311 8312 /* check status reg for all VFs owned by this PF */ 8313 for (vf = 0; vf < adapter->num_vfs; ++vf) { 8314 struct pci_dev *vfdev = adapter->vfinfo[vf].vfdev; 8315 u16 status_reg; 8316 8317 if (!vfdev) 8318 continue; 8319 pci_read_config_word(vfdev, PCI_STATUS, &status_reg); 8320 if (status_reg != IXGBE_FAILED_READ_CFG_WORD && 8321 status_reg & PCI_STATUS_REC_MASTER_ABORT) { 8322 ixgbe_bad_vf_abort(adapter, vf); 8323 pcie_flr(vfdev); 8324 } 8325 } 8326} 8327 8328static void ixgbe_spoof_check(struct ixgbe_adapter *adapter) 8329{ 8330 u32 ssvpc; 8331 8332 /* Do not perform spoof check for 82598 or if not in IOV mode */ 8333 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 8334 adapter->num_vfs == 0) 8335 return; 8336 8337 ssvpc = IXGBE_READ_REG(&adapter->hw, IXGBE_SSVPC); 8338 8339 /* 8340 * ssvpc register is cleared on read, if zero then no 8341 * spoofed packets in the last interval. 8342 */ 8343 if (!ssvpc) 8344 return; 8345 8346 e_warn(drv, "%u Spoofed packets detected\n", ssvpc); 8347} 8348#else 8349static void ixgbe_spoof_check(struct ixgbe_adapter __always_unused *adapter) 8350{ 8351} 8352 8353static void 8354ixgbe_check_for_bad_vf(struct ixgbe_adapter __always_unused *adapter) 8355{ 8356} 8357#endif /* CONFIG_PCI_IOV */ 8358 8359 8360/** 8361 * ixgbe_watchdog_subtask - check and bring link up 8362 * @adapter: pointer to the device adapter structure 8363 **/ 8364static void ixgbe_watchdog_subtask(struct ixgbe_adapter *adapter) 8365{ 8366 /* if interface is down, removing or resetting, do nothing */ 8367 if (test_bit(__IXGBE_DOWN, &adapter->state) || 8368 test_bit(__IXGBE_REMOVING, &adapter->state) || 8369 test_bit(__IXGBE_RESETTING, &adapter->state)) 8370 return; 8371 8372 ixgbe_watchdog_update_link(adapter); 8373 8374 if (adapter->link_up) 8375 ixgbe_watchdog_link_is_up(adapter); 8376 else 8377 ixgbe_watchdog_link_is_down(adapter); 8378 8379 ixgbe_check_for_bad_vf(adapter); 8380 ixgbe_spoof_check(adapter); 8381 ixgbe_update_stats(adapter); 8382 8383 ixgbe_watchdog_flush_tx(adapter); 8384} 8385 8386/** 8387 * ixgbe_sfp_detection_subtask - poll for SFP+ cable 8388 * @adapter: the ixgbe adapter structure 8389 **/ 8390static void ixgbe_sfp_detection_subtask(struct ixgbe_adapter *adapter) 8391{ 8392 struct ixgbe_hw *hw = &adapter->hw; 8393 int err; 8394 8395 /* not searching for SFP so there is nothing to do here */ 8396 if (!(adapter->flags2 & IXGBE_FLAG2_SEARCH_FOR_SFP) && 8397 !(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 8398 return; 8399 8400 if (adapter->sfp_poll_time && 8401 time_after(adapter->sfp_poll_time, jiffies)) 8402 return; /* If not yet time to poll for SFP */ 8403 8404 /* someone else is in init, wait until next service event */ 8405 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 8406 return; 8407 8408 adapter->sfp_poll_time = jiffies + IXGBE_SFP_POLL_JIFFIES - 1; 8409 8410 err = hw->phy.ops.identify_sfp(hw); 8411 if (err == -EOPNOTSUPP) 8412 goto sfp_out; 8413 8414 if (err == -ENOENT) { 8415 /* If no cable is present, then we need to reset 8416 * the next time we find a good cable. */ 8417 adapter->flags2 |= IXGBE_FLAG2_SFP_NEEDS_RESET; 8418 } 8419 8420 /* exit on error */ 8421 if (err) 8422 goto sfp_out; 8423 8424 /* exit if reset not needed */ 8425 if (!(adapter->flags2 & IXGBE_FLAG2_SFP_NEEDS_RESET)) 8426 goto sfp_out; 8427 8428 adapter->flags2 &= ~IXGBE_FLAG2_SFP_NEEDS_RESET; 8429 8430 /* 8431 * A module may be identified correctly, but the EEPROM may not have 8432 * support for that module. setup_sfp() will fail in that case, so 8433 * we should not allow that module to load. 8434 */ 8435 if (hw->mac.type == ixgbe_mac_82598EB) 8436 err = hw->phy.ops.reset(hw); 8437 else 8438 err = hw->mac.ops.setup_sfp(hw); 8439 8440 if (err == -EOPNOTSUPP) 8441 goto sfp_out; 8442 8443 adapter->flags |= IXGBE_FLAG_NEED_LINK_CONFIG; 8444 e_info(probe, "detected SFP+: %d\n", hw->phy.sfp_type); 8445 8446sfp_out: 8447 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 8448 8449 if (err == -EOPNOTSUPP && 8450 adapter->netdev->reg_state == NETREG_REGISTERED) { 8451 e_dev_err("failed to initialize because an unsupported " 8452 "SFP+ module type was detected.\n"); 8453 e_dev_err("Reload the driver after installing a " 8454 "supported module.\n"); 8455 unregister_netdev(adapter->netdev); 8456 } 8457} 8458 8459/** 8460 * ixgbe_sfp_link_config_subtask - set up link SFP after module install 8461 * @adapter: the ixgbe adapter structure 8462 **/ 8463static void ixgbe_sfp_link_config_subtask(struct ixgbe_adapter *adapter) 8464{ 8465 struct ixgbe_hw *hw = &adapter->hw; 8466 u32 cap_speed; 8467 u32 speed; 8468 bool autoneg = false; 8469 8470 if (!(adapter->flags & IXGBE_FLAG_NEED_LINK_CONFIG)) 8471 return; 8472 8473 /* someone else is in init, wait until next service event */ 8474 if (test_and_set_bit(__IXGBE_IN_SFP_INIT, &adapter->state)) 8475 return; 8476 8477 adapter->flags &= ~IXGBE_FLAG_NEED_LINK_CONFIG; 8478 8479 hw->mac.ops.get_link_capabilities(hw, &cap_speed, &autoneg); 8480 8481 /* advertise highest capable link speed */ 8482 if (!autoneg && (cap_speed & IXGBE_LINK_SPEED_10GB_FULL)) 8483 speed = IXGBE_LINK_SPEED_10GB_FULL; 8484 else 8485 speed = cap_speed & (IXGBE_LINK_SPEED_10GB_FULL | 8486 IXGBE_LINK_SPEED_1GB_FULL); 8487 8488 if (hw->mac.ops.setup_link) 8489 hw->mac.ops.setup_link(hw, speed, true); 8490 8491 adapter->flags |= IXGBE_FLAG_NEED_LINK_UPDATE; 8492 adapter->link_check_timeout = jiffies; 8493 clear_bit(__IXGBE_IN_SFP_INIT, &adapter->state); 8494} 8495 8496/** 8497 * ixgbe_service_timer - Timer Call-back 8498 * @t: pointer to timer_list structure 8499 **/ 8500static void ixgbe_service_timer(struct timer_list *t) 8501{ 8502 struct ixgbe_adapter *adapter = timer_container_of(adapter, t, 8503 service_timer); 8504 unsigned long next_event_offset; 8505 8506 /* poll faster when waiting for link */ 8507 if (adapter->flags & IXGBE_FLAG_NEED_LINK_UPDATE) 8508 next_event_offset = HZ / 10; 8509 else 8510 next_event_offset = HZ * 2; 8511 8512 /* Reset the timer */ 8513 mod_timer(&adapter->service_timer, next_event_offset + jiffies); 8514 8515 ixgbe_service_event_schedule(adapter); 8516} 8517 8518static void ixgbe_phy_interrupt_subtask(struct ixgbe_adapter *adapter) 8519{ 8520 struct ixgbe_hw *hw = &adapter->hw; 8521 bool overtemp; 8522 8523 if (!(adapter->flags2 & IXGBE_FLAG2_PHY_INTERRUPT)) 8524 return; 8525 8526 adapter->flags2 &= ~IXGBE_FLAG2_PHY_INTERRUPT; 8527 8528 if (!hw->phy.ops.handle_lasi) 8529 return; 8530 8531 hw->phy.ops.handle_lasi(&adapter->hw, &overtemp); 8532 if (overtemp) 8533 e_crit(drv, "%s\n", ixgbe_overheat_msg); 8534} 8535 8536static void ixgbe_reset_subtask(struct ixgbe_adapter *adapter) 8537{ 8538 if (!test_and_clear_bit(__IXGBE_RESET_REQUESTED, &adapter->state)) 8539 return; 8540 8541 rtnl_lock(); 8542 /* If we're already down, removing or resetting, just bail */ 8543 if (test_bit(__IXGBE_DOWN, &adapter->state) || 8544 test_bit(__IXGBE_REMOVING, &adapter->state) || 8545 test_bit(__IXGBE_RESETTING, &adapter->state)) { 8546 rtnl_unlock(); 8547 return; 8548 } 8549 8550 ixgbe_dump(adapter); 8551 netdev_err(adapter->netdev, "Reset adapter\n"); 8552 adapter->tx_timeout_count++; 8553 8554 ixgbe_reinit_locked(adapter); 8555 rtnl_unlock(); 8556} 8557 8558static int ixgbe_check_fw_api_mismatch(struct ixgbe_adapter *adapter) 8559{ 8560 struct ixgbe_hw *hw = &adapter->hw; 8561 8562 if (hw->mac.type != ixgbe_mac_e610) 8563 return 0; 8564 8565 if (hw->mac.ops.get_fw_ver && hw->mac.ops.get_fw_ver(hw)) 8566 return 0; 8567 8568 if (hw->api_maj_ver > IXGBE_FW_API_VER_MAJOR) { 8569 e_dev_err("The driver for the device stopped because the NVM image is newer than expected. You must install the most recent version of the network driver.\n"); 8570 8571 adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH; 8572 return -EOPNOTSUPP; 8573 } else if (hw->api_maj_ver == IXGBE_FW_API_VER_MAJOR && 8574 hw->api_min_ver > IXGBE_FW_API_VER_MINOR + IXGBE_FW_API_VER_DIFF_ALLOWED) { 8575 e_dev_info("The driver for the device detected a newer version of the NVM image than expected. Please install the most recent version of the network driver.\n"); 8576 adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH; 8577 } else if (hw->api_maj_ver < IXGBE_FW_API_VER_MAJOR || 8578 hw->api_min_ver < IXGBE_FW_API_VER_MINOR - IXGBE_FW_API_VER_DIFF_ALLOWED) { 8579 e_dev_info("The driver for the device detected an older version of the NVM image than expected. Please update the NVM image.\n"); 8580 adapter->flags2 |= IXGBE_FLAG2_API_MISMATCH; 8581 } 8582 8583 return 0; 8584} 8585 8586/** 8587 * ixgbe_check_fw_error - Check firmware for errors 8588 * @adapter: the adapter private structure 8589 * 8590 * Check firmware errors in register FWSM 8591 */ 8592static bool ixgbe_check_fw_error(struct ixgbe_adapter *adapter) 8593{ 8594 struct ixgbe_hw *hw = &adapter->hw; 8595 u32 fwsm; 8596 int err; 8597 8598 /* read fwsm.ext_err_ind register and log errors */ 8599 fwsm = IXGBE_READ_REG(hw, IXGBE_FWSM(hw)); 8600 8601 /* skip if E610's FW is reloading, warning in that case may be misleading */ 8602 if (fwsm & IXGBE_FWSM_EXT_ERR_IND_MASK || 8603 (!(fwsm & IXGBE_FWSM_FW_VAL_BIT) && !(hw->mac.type == ixgbe_mac_e610))) 8604 e_dev_warn("Warning firmware error detected FWSM: 0x%08X\n", 8605 fwsm); 8606 8607 if (hw->mac.ops.fw_recovery_mode && hw->mac.ops.fw_recovery_mode(hw)) { 8608 e_dev_err("Firmware recovery mode detected. Limiting functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware recovery mode.\n"); 8609 return true; 8610 } 8611 if (!(adapter->flags2 & IXGBE_FLAG2_API_MISMATCH)) { 8612 err = ixgbe_check_fw_api_mismatch(adapter); 8613 if (err) 8614 return true; 8615 } 8616 8617 /* return here if FW rollback mode has been already detected */ 8618 if (adapter->flags2 & IXGBE_FLAG2_FW_ROLLBACK) 8619 return false; 8620 8621 if (hw->mac.ops.fw_rollback_mode && hw->mac.ops.fw_rollback_mode(hw)) { 8622 struct ixgbe_nvm_info *nvm_info = &adapter->hw.flash.nvm; 8623 char ver_buff[64] = ""; 8624 8625 if (hw->mac.ops.get_fw_ver && hw->mac.ops.get_fw_ver(hw)) 8626 goto no_version; 8627 8628 if (hw->mac.ops.get_nvm_ver && 8629 hw->mac.ops.get_nvm_ver(hw, nvm_info)) 8630 goto no_version; 8631 8632 snprintf(ver_buff, sizeof(ver_buff), 8633 "Current version is NVM:%x.%x.%x, FW:%d.%d. ", 8634 nvm_info->major, nvm_info->minor, nvm_info->eetrack, 8635 hw->fw_maj_ver, hw->fw_maj_ver); 8636no_version: 8637 e_dev_warn("Firmware rollback mode detected. %sDevice may exhibit limited functionality. Refer to the Intel(R) Ethernet Adapters and Devices User Guide for details on firmware rollback mode.", 8638 ver_buff); 8639 8640 adapter->flags2 |= IXGBE_FLAG2_FW_ROLLBACK; 8641 } 8642 8643 return false; 8644} 8645 8646static void ixgbe_recovery_service_task(struct work_struct *work) 8647{ 8648 struct ixgbe_adapter *adapter = container_of(work, 8649 struct ixgbe_adapter, 8650 service_task); 8651 8652 ixgbe_handle_fw_event(adapter); 8653 ixgbe_service_event_complete(adapter); 8654 8655 mod_timer(&adapter->service_timer, jiffies + msecs_to_jiffies(100)); 8656} 8657 8658/** 8659 * ixgbe_service_task - manages and runs subtasks 8660 * @work: pointer to work_struct containing our data 8661 **/ 8662static void ixgbe_service_task(struct work_struct *work) 8663{ 8664 struct ixgbe_adapter *adapter = container_of(work, 8665 struct ixgbe_adapter, 8666 service_task); 8667 if (ixgbe_removed(adapter->hw.hw_addr)) { 8668 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 8669 rtnl_lock(); 8670 ixgbe_down(adapter); 8671 rtnl_unlock(); 8672 } 8673 ixgbe_service_event_complete(adapter); 8674 return; 8675 } 8676 if (ixgbe_check_fw_error(adapter)) { 8677 if (!test_bit(__IXGBE_DOWN, &adapter->state)) { 8678 if (adapter->mii_bus) { 8679 mdiobus_unregister(adapter->mii_bus); 8680 adapter->mii_bus = NULL; 8681 } 8682 unregister_netdev(adapter->netdev); 8683 } 8684 ixgbe_service_event_complete(adapter); 8685 return; 8686 } 8687 if (adapter->hw.mac.type == ixgbe_mac_e610) { 8688 if (adapter->flags2 & IXGBE_FLAG2_FW_ASYNC_EVENT) 8689 ixgbe_handle_fw_event(adapter); 8690 ixgbe_check_media_subtask(adapter); 8691 } 8692 ixgbe_reset_subtask(adapter); 8693 ixgbe_phy_interrupt_subtask(adapter); 8694 ixgbe_sfp_detection_subtask(adapter); 8695 ixgbe_sfp_link_config_subtask(adapter); 8696 ixgbe_check_overtemp_subtask(adapter); 8697 ixgbe_watchdog_subtask(adapter); 8698 ixgbe_fdir_reinit_subtask(adapter); 8699 ixgbe_check_hang_subtask(adapter); 8700 8701 if (test_bit(__IXGBE_PTP_RUNNING, &adapter->state)) { 8702 ixgbe_ptp_overflow_check(adapter); 8703 if (adapter->flags & IXGBE_FLAG_RX_HWTSTAMP_IN_REGISTER) 8704 ixgbe_ptp_rx_hang(adapter); 8705 ixgbe_ptp_tx_hang(adapter); 8706 } 8707 8708 ixgbe_service_event_complete(adapter); 8709} 8710 8711static int ixgbe_tso(struct ixgbe_ring *tx_ring, 8712 struct ixgbe_tx_buffer *first, 8713 u8 *hdr_len, 8714 struct ixgbe_ipsec_tx_data *itd) 8715{ 8716 u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; 8717 struct sk_buff *skb = first->skb; 8718 union { 8719 struct iphdr *v4; 8720 struct ipv6hdr *v6; 8721 unsigned char *hdr; 8722 } ip; 8723 union { 8724 struct tcphdr *tcp; 8725 struct udphdr *udp; 8726 unsigned char *hdr; 8727 } l4; 8728 u32 paylen, l4_offset; 8729 u32 fceof_saidx = 0; 8730 int err; 8731 8732 if (skb->ip_summed != CHECKSUM_PARTIAL) 8733 return 0; 8734 8735 if (!skb_is_gso(skb)) 8736 return 0; 8737 8738 err = skb_cow_head(skb, 0); 8739 if (err < 0) 8740 return err; 8741 8742 if (eth_p_mpls(first->protocol)) 8743 ip.hdr = skb_inner_network_header(skb); 8744 else 8745 ip.hdr = skb_network_header(skb); 8746 l4.hdr = skb_checksum_start(skb); 8747 8748 /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ 8749 type_tucmd = (skb_shinfo(skb)->gso_type & SKB_GSO_UDP_L4) ? 8750 IXGBE_ADVTXD_TUCMD_L4T_UDP : IXGBE_ADVTXD_TUCMD_L4T_TCP; 8751 8752 /* initialize outer IP header fields */ 8753 if (ip.v4->version == 4) { 8754 unsigned char *csum_start = skb_checksum_start(skb); 8755 unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); 8756 int len = csum_start - trans_start; 8757 8758 /* IP header will have to cancel out any data that 8759 * is not a part of the outer IP header, so set to 8760 * a reverse csum if needed, else init check to 0. 8761 */ 8762 ip.v4->check = (skb_shinfo(skb)->gso_type & SKB_GSO_PARTIAL) ? 8763 csum_fold(csum_partial(trans_start, 8764 len, 0)) : 0; 8765 type_tucmd |= IXGBE_ADVTXD_TUCMD_IPV4; 8766 8767 ip.v4->tot_len = 0; 8768 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8769 IXGBE_TX_FLAGS_CSUM | 8770 IXGBE_TX_FLAGS_IPV4; 8771 } else { 8772 ip.v6->payload_len = 0; 8773 first->tx_flags |= IXGBE_TX_FLAGS_TSO | 8774 IXGBE_TX_FLAGS_CSUM; 8775 } 8776 8777 /* determine offset of inner transport header */ 8778 l4_offset = l4.hdr - skb->data; 8779 8780 /* remove payload length from inner checksum */ 8781 paylen = skb->len - l4_offset; 8782 8783 if (type_tucmd & IXGBE_ADVTXD_TUCMD_L4T_TCP) { 8784 /* compute length of segmentation header */ 8785 *hdr_len = (l4.tcp->doff * 4) + l4_offset; 8786 csum_replace_by_diff(&l4.tcp->check, 8787 (__force __wsum)htonl(paylen)); 8788 } else { 8789 /* compute length of segmentation header */ 8790 *hdr_len = sizeof(*l4.udp) + l4_offset; 8791 csum_replace_by_diff(&l4.udp->check, 8792 (__force __wsum)htonl(paylen)); 8793 } 8794 8795 /* update gso size and bytecount with header size */ 8796 first->gso_segs = skb_shinfo(skb)->gso_segs; 8797 first->bytecount += (first->gso_segs - 1) * *hdr_len; 8798 8799 /* mss_l4len_id: use 0 as index for TSO */ 8800 mss_l4len_idx = (*hdr_len - l4_offset) << IXGBE_ADVTXD_L4LEN_SHIFT; 8801 mss_l4len_idx |= skb_shinfo(skb)->gso_size << IXGBE_ADVTXD_MSS_SHIFT; 8802 8803 fceof_saidx |= itd->sa_idx; 8804 type_tucmd |= itd->flags | itd->trailer_len; 8805 8806 /* vlan_macip_lens: HEADLEN, MACLEN, VLAN tag */ 8807 vlan_macip_lens = l4.hdr - ip.hdr; 8808 vlan_macip_lens |= (ip.hdr - skb->data) << IXGBE_ADVTXD_MACLEN_SHIFT; 8809 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8810 8811 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 8812 mss_l4len_idx); 8813 8814 return 1; 8815} 8816 8817static void ixgbe_tx_csum(struct ixgbe_ring *tx_ring, 8818 struct ixgbe_tx_buffer *first, 8819 struct ixgbe_ipsec_tx_data *itd) 8820{ 8821 struct sk_buff *skb = first->skb; 8822 u32 vlan_macip_lens = 0; 8823 u32 fceof_saidx = 0; 8824 u32 type_tucmd = 0; 8825 8826 if (skb->ip_summed != CHECKSUM_PARTIAL) { 8827csum_failed: 8828 if (!(first->tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | 8829 IXGBE_TX_FLAGS_CC))) 8830 return; 8831 goto no_csum; 8832 } 8833 8834 switch (skb->csum_offset) { 8835 case offsetof(struct tcphdr, check): 8836 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_TCP; 8837 fallthrough; 8838 case offsetof(struct udphdr, check): 8839 break; 8840 case offsetof(struct sctphdr, checksum): 8841 /* validate that this is actually an SCTP request */ 8842 if (skb_csum_is_sctp(skb)) { 8843 type_tucmd = IXGBE_ADVTXD_TUCMD_L4T_SCTP; 8844 break; 8845 } 8846 fallthrough; 8847 default: 8848 skb_checksum_help(skb); 8849 goto csum_failed; 8850 } 8851 8852 /* update TX checksum flag */ 8853 first->tx_flags |= IXGBE_TX_FLAGS_CSUM; 8854 vlan_macip_lens = skb_checksum_start_offset(skb) - 8855 skb_network_offset(skb); 8856no_csum: 8857 /* vlan_macip_lens: MACLEN, VLAN tag */ 8858 vlan_macip_lens |= skb_network_offset(skb) << IXGBE_ADVTXD_MACLEN_SHIFT; 8859 vlan_macip_lens |= first->tx_flags & IXGBE_TX_FLAGS_VLAN_MASK; 8860 8861 fceof_saidx |= itd->sa_idx; 8862 type_tucmd |= itd->flags | itd->trailer_len; 8863 8864 ixgbe_tx_ctxtdesc(tx_ring, vlan_macip_lens, fceof_saidx, type_tucmd, 0); 8865} 8866 8867#define IXGBE_SET_FLAG(_input, _flag, _result) \ 8868 ((_flag <= _result) ? \ 8869 ((u32)(_input & _flag) * (_result / _flag)) : \ 8870 ((u32)(_input & _flag) / (_flag / _result))) 8871 8872static u32 ixgbe_tx_cmd_type(struct sk_buff *skb, u32 tx_flags) 8873{ 8874 /* set type for advanced descriptor with frame checksum insertion */ 8875 u32 cmd_type = IXGBE_ADVTXD_DTYP_DATA | 8876 IXGBE_ADVTXD_DCMD_DEXT | 8877 IXGBE_ADVTXD_DCMD_IFCS; 8878 8879 /* set HW vlan bit if vlan is present */ 8880 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_HW_VLAN, 8881 IXGBE_ADVTXD_DCMD_VLE); 8882 8883 /* set segmentation enable bits for TSO/FSO */ 8884 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSO, 8885 IXGBE_ADVTXD_DCMD_TSE); 8886 8887 /* set timestamp bit if present */ 8888 cmd_type |= IXGBE_SET_FLAG(tx_flags, IXGBE_TX_FLAGS_TSTAMP, 8889 IXGBE_ADVTXD_MAC_TSTAMP); 8890 8891 /* insert frame checksum */ 8892 cmd_type ^= IXGBE_SET_FLAG(skb->no_fcs, 1, IXGBE_ADVTXD_DCMD_IFCS); 8893 8894 return cmd_type; 8895} 8896 8897static void ixgbe_tx_olinfo_status(union ixgbe_adv_tx_desc *tx_desc, 8898 u32 tx_flags, unsigned int paylen) 8899{ 8900 u32 olinfo_status = paylen << IXGBE_ADVTXD_PAYLEN_SHIFT; 8901 8902 /* enable L4 checksum for TSO and TX checksum offload */ 8903 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8904 IXGBE_TX_FLAGS_CSUM, 8905 IXGBE_ADVTXD_POPTS_TXSM); 8906 8907 /* enable IPv4 checksum for TSO */ 8908 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8909 IXGBE_TX_FLAGS_IPV4, 8910 IXGBE_ADVTXD_POPTS_IXSM); 8911 8912 /* enable IPsec */ 8913 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8914 IXGBE_TX_FLAGS_IPSEC, 8915 IXGBE_ADVTXD_POPTS_IPSEC); 8916 8917 /* 8918 * Check Context must be set if Tx switch is enabled, which it 8919 * always is for case where virtual functions are running 8920 */ 8921 olinfo_status |= IXGBE_SET_FLAG(tx_flags, 8922 IXGBE_TX_FLAGS_CC, 8923 IXGBE_ADVTXD_CC); 8924 8925 tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); 8926} 8927 8928static int __ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8929{ 8930 if (!netif_subqueue_try_stop(tx_ring->netdev, tx_ring->queue_index, 8931 ixgbe_desc_unused(tx_ring), size)) 8932 return -EBUSY; 8933 8934 ++tx_ring->tx_stats.restart_queue; 8935 return 0; 8936} 8937 8938static inline int ixgbe_maybe_stop_tx(struct ixgbe_ring *tx_ring, u16 size) 8939{ 8940 if (likely(ixgbe_desc_unused(tx_ring) >= size)) 8941 return 0; 8942 8943 return __ixgbe_maybe_stop_tx(tx_ring, size); 8944} 8945 8946static int ixgbe_tx_map(struct ixgbe_ring *tx_ring, 8947 struct ixgbe_tx_buffer *first, 8948 const u8 hdr_len) 8949{ 8950 struct sk_buff *skb = first->skb; 8951 struct ixgbe_tx_buffer *tx_buffer; 8952 union ixgbe_adv_tx_desc *tx_desc; 8953 skb_frag_t *frag; 8954 dma_addr_t dma; 8955 unsigned int data_len, size; 8956 u32 tx_flags = first->tx_flags; 8957 u32 cmd_type = ixgbe_tx_cmd_type(skb, tx_flags); 8958 u16 i = tx_ring->next_to_use; 8959 8960 tx_desc = IXGBE_TX_DESC(tx_ring, i); 8961 8962 ixgbe_tx_olinfo_status(tx_desc, tx_flags, skb->len - hdr_len); 8963 8964 size = skb_headlen(skb); 8965 data_len = skb->data_len; 8966 8967#ifdef IXGBE_FCOE 8968 if (tx_flags & IXGBE_TX_FLAGS_FCOE) { 8969 if (data_len < sizeof(struct fcoe_crc_eof)) { 8970 size -= sizeof(struct fcoe_crc_eof) - data_len; 8971 data_len = 0; 8972 } else { 8973 data_len -= sizeof(struct fcoe_crc_eof); 8974 } 8975 } 8976 8977#endif 8978 dma = dma_map_single(tx_ring->dev, skb->data, size, DMA_TO_DEVICE); 8979 8980 tx_buffer = first; 8981 8982 for (frag = &skb_shinfo(skb)->frags[0];; frag++) { 8983 if (dma_mapping_error(tx_ring->dev, dma)) 8984 goto dma_error; 8985 8986 /* record length, and DMA address */ 8987 dma_unmap_len_set(tx_buffer, len, size); 8988 dma_unmap_addr_set(tx_buffer, dma, dma); 8989 8990 tx_desc->read.buffer_addr = cpu_to_le64(dma); 8991 8992 while (unlikely(size > IXGBE_MAX_DATA_PER_TXD)) { 8993 tx_desc->read.cmd_type_len = 8994 cpu_to_le32(cmd_type ^ IXGBE_MAX_DATA_PER_TXD); 8995 8996 i++; 8997 tx_desc++; 8998 if (i == tx_ring->count) { 8999 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 9000 i = 0; 9001 } 9002 tx_desc->read.olinfo_status = 0; 9003 9004 dma += IXGBE_MAX_DATA_PER_TXD; 9005 size -= IXGBE_MAX_DATA_PER_TXD; 9006 9007 tx_desc->read.buffer_addr = cpu_to_le64(dma); 9008 } 9009 9010 if (likely(!data_len)) 9011 break; 9012 9013 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type ^ size); 9014 9015 i++; 9016 tx_desc++; 9017 if (i == tx_ring->count) { 9018 tx_desc = IXGBE_TX_DESC(tx_ring, 0); 9019 i = 0; 9020 } 9021 tx_desc->read.olinfo_status = 0; 9022 9023#ifdef IXGBE_FCOE 9024 size = min_t(unsigned int, data_len, skb_frag_size(frag)); 9025#else 9026 size = skb_frag_size(frag); 9027#endif 9028 data_len -= size; 9029 9030 dma = skb_frag_dma_map(tx_ring->dev, frag, 0, size, 9031 DMA_TO_DEVICE); 9032 9033 tx_buffer = &tx_ring->tx_buffer_info[i]; 9034 } 9035 9036 /* write last descriptor with RS and EOP bits */ 9037 cmd_type |= size | IXGBE_TXD_CMD; 9038 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 9039 9040 netdev_tx_sent_queue(txring_txq(tx_ring), first->bytecount); 9041 9042 /* set the timestamp */ 9043 first->time_stamp = jiffies; 9044 9045 skb_tx_timestamp(skb); 9046 9047 /* 9048 * Force memory writes to complete before letting h/w know there 9049 * are new descriptors to fetch. (Only applicable for weak-ordered 9050 * memory model archs, such as IA-64). 9051 * 9052 * We also need this memory barrier to make certain all of the 9053 * status bits have been updated before next_to_watch is written. 9054 */ 9055 wmb(); 9056 9057 /* set next_to_watch value indicating a packet is present */ 9058 first->next_to_watch = tx_desc; 9059 9060 i++; 9061 if (i == tx_ring->count) 9062 i = 0; 9063 9064 tx_ring->next_to_use = i; 9065 9066 ixgbe_maybe_stop_tx(tx_ring, DESC_NEEDED); 9067 9068 if (netif_xmit_stopped(txring_txq(tx_ring)) || !netdev_xmit_more()) { 9069 writel(i, tx_ring->tail); 9070 } 9071 9072 return 0; 9073dma_error: 9074 dev_err(tx_ring->dev, "TX DMA map failed\n"); 9075 9076 /* clear dma mappings for failed tx_buffer_info map */ 9077 for (;;) { 9078 tx_buffer = &tx_ring->tx_buffer_info[i]; 9079 if (dma_unmap_len(tx_buffer, len)) 9080 dma_unmap_page(tx_ring->dev, 9081 dma_unmap_addr(tx_buffer, dma), 9082 dma_unmap_len(tx_buffer, len), 9083 DMA_TO_DEVICE); 9084 dma_unmap_len_set(tx_buffer, len, 0); 9085 if (tx_buffer == first) 9086 break; 9087 if (i == 0) 9088 i += tx_ring->count; 9089 i--; 9090 } 9091 9092 dev_kfree_skb_any(first->skb); 9093 first->skb = NULL; 9094 9095 tx_ring->next_to_use = i; 9096 9097 return -1; 9098} 9099 9100static void ixgbe_atr(struct ixgbe_ring *ring, 9101 struct ixgbe_tx_buffer *first) 9102{ 9103 struct ixgbe_q_vector *q_vector = ring->q_vector; 9104 union ixgbe_atr_hash_dword input = { .dword = 0 }; 9105 union ixgbe_atr_hash_dword common = { .dword = 0 }; 9106 union { 9107 unsigned char *network; 9108 struct iphdr *ipv4; 9109 struct ipv6hdr *ipv6; 9110 } hdr; 9111 struct tcphdr *th; 9112 unsigned int hlen; 9113 struct sk_buff *skb; 9114 __be16 vlan_id; 9115 int l4_proto; 9116 9117 /* if ring doesn't have a interrupt vector, cannot perform ATR */ 9118 if (!q_vector) 9119 return; 9120 9121 /* do nothing if sampling is disabled */ 9122 if (!ring->atr_sample_rate) 9123 return; 9124 9125 ring->atr_count++; 9126 9127 /* currently only IPv4/IPv6 with TCP is supported */ 9128 if ((first->protocol != htons(ETH_P_IP)) && 9129 (first->protocol != htons(ETH_P_IPV6))) 9130 return; 9131 9132 /* snag network header to get L4 type and address */ 9133 skb = first->skb; 9134 hdr.network = skb_network_header(skb); 9135 if (unlikely(hdr.network <= skb->data)) 9136 return; 9137 if (skb->encapsulation && 9138 first->protocol == htons(ETH_P_IP) && 9139 hdr.ipv4->protocol == IPPROTO_UDP) { 9140 struct ixgbe_adapter *adapter = q_vector->adapter; 9141 9142 if (unlikely(skb_tail_pointer(skb) < hdr.network + 9143 vxlan_headroom(0))) 9144 return; 9145 9146 /* verify the port is recognized as VXLAN */ 9147 if (adapter->vxlan_port && 9148 udp_hdr(skb)->dest == adapter->vxlan_port) 9149 hdr.network = skb_inner_network_header(skb); 9150 9151 if (adapter->geneve_port && 9152 udp_hdr(skb)->dest == adapter->geneve_port) 9153 hdr.network = skb_inner_network_header(skb); 9154 } 9155 9156 /* Make sure we have at least [minimum IPv4 header + TCP] 9157 * or [IPv6 header] bytes 9158 */ 9159 if (unlikely(skb_tail_pointer(skb) < hdr.network + 40)) 9160 return; 9161 9162 /* Currently only IPv4/IPv6 with TCP is supported */ 9163 switch (hdr.ipv4->version) { 9164 case IPVERSION: 9165 /* access ihl as u8 to avoid unaligned access on ia64 */ 9166 hlen = (hdr.network[0] & 0x0F) << 2; 9167 l4_proto = hdr.ipv4->protocol; 9168 break; 9169 case 6: 9170 hlen = hdr.network - skb->data; 9171 l4_proto = ipv6_find_hdr(skb, &hlen, IPPROTO_TCP, NULL, NULL); 9172 hlen -= hdr.network - skb->data; 9173 break; 9174 default: 9175 return; 9176 } 9177 9178 if (l4_proto != IPPROTO_TCP) 9179 return; 9180 9181 if (unlikely(skb_tail_pointer(skb) < hdr.network + 9182 hlen + sizeof(struct tcphdr))) 9183 return; 9184 9185 th = (struct tcphdr *)(hdr.network + hlen); 9186 9187 /* skip this packet since the socket is closing */ 9188 if (th->fin) 9189 return; 9190 9191 /* sample on all syn packets or once every atr sample count */ 9192 if (!th->syn && (ring->atr_count < ring->atr_sample_rate)) 9193 return; 9194 9195 /* reset sample count */ 9196 ring->atr_count = 0; 9197 9198 vlan_id = htons(first->tx_flags >> IXGBE_TX_FLAGS_VLAN_SHIFT); 9199 9200 /* 9201 * src and dst are inverted, think how the receiver sees them 9202 * 9203 * The input is broken into two sections, a non-compressed section 9204 * containing vm_pool, vlan_id, and flow_type. The rest of the data 9205 * is XORed together and stored in the compressed dword. 9206 */ 9207 input.formatted.vlan_id = vlan_id; 9208 9209 /* 9210 * since src port and flex bytes occupy the same word XOR them together 9211 * and write the value to source port portion of compressed dword 9212 */ 9213 if (first->tx_flags & (IXGBE_TX_FLAGS_SW_VLAN | IXGBE_TX_FLAGS_HW_VLAN)) 9214 common.port.src ^= th->dest ^ htons(ETH_P_8021Q); 9215 else 9216 common.port.src ^= th->dest ^ first->protocol; 9217 common.port.dst ^= th->source; 9218 9219 switch (hdr.ipv4->version) { 9220 case IPVERSION: 9221 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV4; 9222 common.ip ^= hdr.ipv4->saddr ^ hdr.ipv4->daddr; 9223 break; 9224 case 6: 9225 input.formatted.flow_type = IXGBE_ATR_FLOW_TYPE_TCPV6; 9226 common.ip ^= hdr.ipv6->saddr.s6_addr32[0] ^ 9227 hdr.ipv6->saddr.s6_addr32[1] ^ 9228 hdr.ipv6->saddr.s6_addr32[2] ^ 9229 hdr.ipv6->saddr.s6_addr32[3] ^ 9230 hdr.ipv6->daddr.s6_addr32[0] ^ 9231 hdr.ipv6->daddr.s6_addr32[1] ^ 9232 hdr.ipv6->daddr.s6_addr32[2] ^ 9233 hdr.ipv6->daddr.s6_addr32[3]; 9234 break; 9235 default: 9236 break; 9237 } 9238 9239 if (hdr.network != skb_network_header(skb)) 9240 input.formatted.flow_type |= IXGBE_ATR_L4TYPE_TUNNEL_MASK; 9241 9242 /* This assumes the Rx queue and Tx queue are bound to the same CPU */ 9243 ixgbe_fdir_add_signature_filter_82599(&q_vector->adapter->hw, 9244 input, common, ring->queue_index); 9245} 9246 9247#ifdef IXGBE_FCOE 9248static u16 ixgbe_select_queue(struct net_device *dev, struct sk_buff *skb, 9249 struct net_device *sb_dev) 9250{ 9251 struct ixgbe_adapter *adapter; 9252 struct ixgbe_ring_feature *f; 9253 int txq; 9254 9255 if (sb_dev) { 9256 u8 tc = netdev_get_prio_tc_map(dev, skb->priority); 9257 struct net_device *vdev = sb_dev; 9258 9259 txq = vdev->tc_to_txq[tc].offset; 9260 txq += reciprocal_scale(skb_get_hash(skb), 9261 vdev->tc_to_txq[tc].count); 9262 9263 return txq; 9264 } 9265 9266 /* 9267 * only execute the code below if protocol is FCoE 9268 * or FIP and we have FCoE enabled on the adapter 9269 */ 9270 switch (vlan_get_protocol(skb)) { 9271 case htons(ETH_P_FCOE): 9272 case htons(ETH_P_FIP): 9273 adapter = ixgbe_from_netdev(dev); 9274 9275 if (!sb_dev && (adapter->flags & IXGBE_FLAG_FCOE_ENABLED)) 9276 break; 9277 fallthrough; 9278 default: 9279 return netdev_pick_tx(dev, skb, sb_dev); 9280 } 9281 9282 f = &adapter->ring_feature[RING_F_FCOE]; 9283 9284 txq = skb_rx_queue_recorded(skb) ? skb_get_rx_queue(skb) : 9285 smp_processor_id(); 9286 9287 while (txq >= f->indices) 9288 txq -= f->indices; 9289 9290 return txq + f->offset; 9291} 9292 9293#endif 9294int ixgbe_xmit_xdp_ring(struct ixgbe_ring *ring, 9295 struct xdp_frame *xdpf) 9296{ 9297 struct skb_shared_info *sinfo = xdp_get_shared_info_from_frame(xdpf); 9298 u8 nr_frags = unlikely(xdp_frame_has_frags(xdpf)) ? sinfo->nr_frags : 0; 9299 u16 i = 0, index = ring->next_to_use; 9300 struct ixgbe_tx_buffer *tx_head = &ring->tx_buffer_info[index]; 9301 struct ixgbe_tx_buffer *tx_buff = tx_head; 9302 union ixgbe_adv_tx_desc *tx_desc = IXGBE_TX_DESC(ring, index); 9303 u32 cmd_type, len = xdpf->len; 9304 void *data = xdpf->data; 9305 9306 if (unlikely(ixgbe_desc_unused(ring) < 1 + nr_frags)) 9307 return IXGBE_XDP_CONSUMED; 9308 9309 tx_head->bytecount = xdp_get_frame_len(xdpf); 9310 tx_head->gso_segs = 1; 9311 tx_head->xdpf = xdpf; 9312 9313 tx_desc->read.olinfo_status = 9314 cpu_to_le32(tx_head->bytecount << IXGBE_ADVTXD_PAYLEN_SHIFT); 9315 9316 for (;;) { 9317 dma_addr_t dma; 9318 9319 dma = dma_map_single(ring->dev, data, len, DMA_TO_DEVICE); 9320 if (dma_mapping_error(ring->dev, dma)) 9321 goto unmap; 9322 9323 dma_unmap_len_set(tx_buff, len, len); 9324 dma_unmap_addr_set(tx_buff, dma, dma); 9325 9326 cmd_type = IXGBE_ADVTXD_DTYP_DATA | IXGBE_ADVTXD_DCMD_DEXT | 9327 IXGBE_ADVTXD_DCMD_IFCS | len; 9328 tx_desc->read.cmd_type_len = cpu_to_le32(cmd_type); 9329 tx_desc->read.buffer_addr = cpu_to_le64(dma); 9330 tx_buff->protocol = 0; 9331 9332 if (++index == ring->count) 9333 index = 0; 9334 9335 if (i == nr_frags) 9336 break; 9337 9338 tx_buff = &ring->tx_buffer_info[index]; 9339 tx_desc = IXGBE_TX_DESC(ring, index); 9340 tx_desc->read.olinfo_status = 0; 9341 9342 data = skb_frag_address(&sinfo->frags[i]); 9343 len = skb_frag_size(&sinfo->frags[i]); 9344 i++; 9345 } 9346 /* put descriptor type bits */ 9347 tx_desc->read.cmd_type_len |= cpu_to_le32(IXGBE_TXD_CMD); 9348 9349 /* Avoid any potential race with xdp_xmit and cleanup */ 9350 smp_wmb(); 9351 9352 tx_head->next_to_watch = tx_desc; 9353 ring->next_to_use = index; 9354 9355 return IXGBE_XDP_TX; 9356 9357unmap: 9358 for (;;) { 9359 tx_buff = &ring->tx_buffer_info[index]; 9360 if (dma_unmap_len(tx_buff, len)) 9361 dma_unmap_page(ring->dev, dma_unmap_addr(tx_buff, dma), 9362 dma_unmap_len(tx_buff, len), 9363 DMA_TO_DEVICE); 9364 dma_unmap_len_set(tx_buff, len, 0); 9365 if (tx_buff == tx_head) 9366 break; 9367 9368 if (!index) 9369 index += ring->count; 9370 index--; 9371 } 9372 9373 return IXGBE_XDP_CONSUMED; 9374} 9375 9376netdev_tx_t ixgbe_xmit_frame_ring(struct sk_buff *skb, 9377 struct ixgbe_adapter *adapter, 9378 struct ixgbe_ring *tx_ring) 9379{ 9380 struct ixgbe_tx_buffer *first; 9381 int tso; 9382 u32 tx_flags = 0; 9383 unsigned short f; 9384 u16 count = TXD_USE_COUNT(skb_headlen(skb)); 9385 struct ixgbe_ipsec_tx_data ipsec_tx = { 0 }; 9386 __be16 protocol = skb->protocol; 9387 u8 hdr_len = 0; 9388 9389 /* 9390 * need: 1 descriptor per page * PAGE_SIZE/IXGBE_MAX_DATA_PER_TXD, 9391 * + 1 desc for skb_headlen/IXGBE_MAX_DATA_PER_TXD, 9392 * + 2 desc gap to keep tail from touching head, 9393 * + 1 desc for context descriptor, 9394 * otherwise try next time 9395 */ 9396 for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) 9397 count += TXD_USE_COUNT(skb_frag_size( 9398 &skb_shinfo(skb)->frags[f])); 9399 9400 if (ixgbe_maybe_stop_tx(tx_ring, count + 3)) { 9401 tx_ring->tx_stats.tx_busy++; 9402 return NETDEV_TX_BUSY; 9403 } 9404 9405 /* record the location of the first descriptor for this packet */ 9406 first = &tx_ring->tx_buffer_info[tx_ring->next_to_use]; 9407 first->skb = skb; 9408 first->bytecount = skb->len; 9409 first->gso_segs = 1; 9410 9411 /* if we have a HW VLAN tag being added default to the HW one */ 9412 if (skb_vlan_tag_present(skb)) { 9413 tx_flags |= skb_vlan_tag_get(skb) << IXGBE_TX_FLAGS_VLAN_SHIFT; 9414 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 9415 /* else if it is a SW VLAN check the next protocol and store the tag */ 9416 } else if (protocol == htons(ETH_P_8021Q)) { 9417 struct vlan_hdr *vhdr, _vhdr; 9418 vhdr = skb_header_pointer(skb, ETH_HLEN, sizeof(_vhdr), &_vhdr); 9419 if (!vhdr) 9420 goto out_drop; 9421 9422 tx_flags |= ntohs(vhdr->h_vlan_TCI) << 9423 IXGBE_TX_FLAGS_VLAN_SHIFT; 9424 tx_flags |= IXGBE_TX_FLAGS_SW_VLAN; 9425 } 9426 protocol = vlan_get_protocol(skb); 9427 9428 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP) && 9429 adapter->ptp_clock) { 9430 if (adapter->tstamp_config.tx_type == HWTSTAMP_TX_ON && 9431 !test_and_set_bit_lock(__IXGBE_PTP_TX_IN_PROGRESS, 9432 &adapter->state)) { 9433 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; 9434 tx_flags |= IXGBE_TX_FLAGS_TSTAMP; 9435 9436 /* schedule check for Tx timestamp */ 9437 adapter->ptp_tx_skb = skb_get(skb); 9438 adapter->ptp_tx_start = jiffies; 9439 schedule_work(&adapter->ptp_tx_work); 9440 } else { 9441 adapter->tx_hwtstamp_skipped++; 9442 } 9443 } 9444 9445#ifdef CONFIG_PCI_IOV 9446 /* 9447 * Use the l2switch_enable flag - would be false if the DMA 9448 * Tx switch had been disabled. 9449 */ 9450 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 9451 tx_flags |= IXGBE_TX_FLAGS_CC; 9452 9453#endif 9454 /* DCB maps skb priorities 0-7 onto 3 bit PCP of VLAN tag. */ 9455 if ((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 9456 ((tx_flags & (IXGBE_TX_FLAGS_HW_VLAN | IXGBE_TX_FLAGS_SW_VLAN)) || 9457 (skb->priority != TC_PRIO_CONTROL))) { 9458 tx_flags &= ~IXGBE_TX_FLAGS_VLAN_PRIO_MASK; 9459 tx_flags |= (skb->priority & 0x7) << 9460 IXGBE_TX_FLAGS_VLAN_PRIO_SHIFT; 9461 if (tx_flags & IXGBE_TX_FLAGS_SW_VLAN) { 9462 struct vlan_ethhdr *vhdr; 9463 9464 if (skb_cow_head(skb, 0)) 9465 goto out_drop; 9466 vhdr = skb_vlan_eth_hdr(skb); 9467 vhdr->h_vlan_TCI = htons(tx_flags >> 9468 IXGBE_TX_FLAGS_VLAN_SHIFT); 9469 } else { 9470 tx_flags |= IXGBE_TX_FLAGS_HW_VLAN; 9471 } 9472 } 9473 9474 /* record initial flags and protocol */ 9475 first->tx_flags = tx_flags; 9476 first->protocol = protocol; 9477 9478#ifdef IXGBE_FCOE 9479 /* setup tx offload for FCoE */ 9480 if ((protocol == htons(ETH_P_FCOE)) && 9481 (tx_ring->netdev->features & (NETIF_F_FSO | NETIF_F_FCOE_CRC))) { 9482 tso = ixgbe_fso(tx_ring, first, &hdr_len); 9483 if (tso < 0) 9484 goto out_drop; 9485 9486 goto xmit_fcoe; 9487 } 9488 9489#endif /* IXGBE_FCOE */ 9490 9491#ifdef CONFIG_IXGBE_IPSEC 9492 if (xfrm_offload(skb) && 9493 !ixgbe_ipsec_tx(tx_ring, first, &ipsec_tx)) 9494 goto out_drop; 9495#endif 9496 tso = ixgbe_tso(tx_ring, first, &hdr_len, &ipsec_tx); 9497 if (tso < 0) 9498 goto out_drop; 9499 else if (!tso) 9500 ixgbe_tx_csum(tx_ring, first, &ipsec_tx); 9501 9502 /* add the ATR filter if ATR is on */ 9503 if (test_bit(__IXGBE_TX_FDIR_INIT_DONE, &tx_ring->state)) 9504 ixgbe_atr(tx_ring, first); 9505 9506#ifdef IXGBE_FCOE 9507xmit_fcoe: 9508#endif /* IXGBE_FCOE */ 9509 if (ixgbe_tx_map(tx_ring, first, hdr_len)) 9510 goto cleanup_tx_timestamp; 9511 9512 return NETDEV_TX_OK; 9513 9514out_drop: 9515 dev_kfree_skb_any(first->skb); 9516 first->skb = NULL; 9517cleanup_tx_timestamp: 9518 if (unlikely(tx_flags & IXGBE_TX_FLAGS_TSTAMP)) { 9519 dev_kfree_skb_any(adapter->ptp_tx_skb); 9520 adapter->ptp_tx_skb = NULL; 9521 cancel_work_sync(&adapter->ptp_tx_work); 9522 clear_bit_unlock(__IXGBE_PTP_TX_IN_PROGRESS, &adapter->state); 9523 } 9524 9525 return NETDEV_TX_OK; 9526} 9527 9528static netdev_tx_t __ixgbe_xmit_frame(struct sk_buff *skb, 9529 struct net_device *netdev, 9530 struct ixgbe_ring *ring) 9531{ 9532 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9533 struct ixgbe_ring *tx_ring; 9534 9535 /* 9536 * The minimum packet size for olinfo paylen is 17 so pad the skb 9537 * in order to meet this minimum size requirement. 9538 */ 9539 if (skb_put_padto(skb, 17)) 9540 return NETDEV_TX_OK; 9541 9542 tx_ring = ring ? ring : adapter->tx_ring[skb_get_queue_mapping(skb)]; 9543 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &tx_ring->state))) 9544 return NETDEV_TX_BUSY; 9545 9546 return ixgbe_xmit_frame_ring(skb, adapter, tx_ring); 9547} 9548 9549static netdev_tx_t ixgbe_xmit_frame(struct sk_buff *skb, 9550 struct net_device *netdev) 9551{ 9552 return __ixgbe_xmit_frame(skb, netdev, NULL); 9553} 9554 9555/** 9556 * ixgbe_set_mac - Change the Ethernet Address of the NIC 9557 * @netdev: network interface device structure 9558 * @p: pointer to an address structure 9559 * 9560 * Returns 0 on success, negative on failure 9561 **/ 9562static int ixgbe_set_mac(struct net_device *netdev, void *p) 9563{ 9564 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9565 struct ixgbe_hw *hw = &adapter->hw; 9566 struct sockaddr *addr = p; 9567 9568 if (!is_valid_ether_addr(addr->sa_data)) 9569 return -EADDRNOTAVAIL; 9570 9571 eth_hw_addr_set(netdev, addr->sa_data); 9572 memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); 9573 9574 ixgbe_mac_set_default_filter(adapter); 9575 9576 return 0; 9577} 9578 9579static int 9580ixgbe_mdio_read(struct net_device *netdev, int prtad, int devad, u16 addr) 9581{ 9582 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9583 struct ixgbe_hw *hw = &adapter->hw; 9584 u16 value; 9585 int rc; 9586 9587 if (adapter->mii_bus) { 9588 int regnum = addr; 9589 9590 if (devad != MDIO_DEVAD_NONE) 9591 return mdiobus_c45_read(adapter->mii_bus, prtad, 9592 devad, regnum); 9593 9594 return mdiobus_read(adapter->mii_bus, prtad, regnum); 9595 } 9596 9597 if (prtad != hw->phy.mdio.prtad) 9598 return -EINVAL; 9599 rc = hw->phy.ops.read_reg(hw, addr, devad, &value); 9600 if (!rc) 9601 rc = value; 9602 return rc; 9603} 9604 9605static int ixgbe_mdio_write(struct net_device *netdev, int prtad, int devad, 9606 u16 addr, u16 value) 9607{ 9608 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9609 struct ixgbe_hw *hw = &adapter->hw; 9610 9611 if (adapter->mii_bus) { 9612 int regnum = addr; 9613 9614 if (devad != MDIO_DEVAD_NONE) 9615 return mdiobus_c45_write(adapter->mii_bus, prtad, devad, 9616 regnum, value); 9617 9618 return mdiobus_write(adapter->mii_bus, prtad, regnum, value); 9619 } 9620 9621 if (prtad != hw->phy.mdio.prtad) 9622 return -EINVAL; 9623 return hw->phy.ops.write_reg(hw, addr, devad, value); 9624} 9625 9626static int ixgbe_ioctl(struct net_device *netdev, struct ifreq *req, int cmd) 9627{ 9628 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9629 9630 switch (cmd) { 9631 case SIOCGMIIPHY: 9632 if (!adapter->hw.phy.ops.read_reg) 9633 return -EOPNOTSUPP; 9634 fallthrough; 9635 default: 9636 return mdio_mii_ioctl(&adapter->hw.phy.mdio, if_mii(req), cmd); 9637 } 9638} 9639 9640/** 9641 * ixgbe_add_sanmac_netdev - Add the SAN MAC address to the corresponding 9642 * netdev->dev_addrs 9643 * @dev: network interface device structure 9644 * 9645 * Returns non-zero on failure 9646 **/ 9647static int ixgbe_add_sanmac_netdev(struct net_device *dev) 9648{ 9649 int err = 0; 9650 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9651 struct ixgbe_hw *hw = &adapter->hw; 9652 9653 if (is_valid_ether_addr(hw->mac.san_addr)) { 9654 rtnl_lock(); 9655 err = dev_addr_add(dev, hw->mac.san_addr, NETDEV_HW_ADDR_T_SAN); 9656 rtnl_unlock(); 9657 9658 /* update SAN MAC vmdq pool selection */ 9659 hw->mac.ops.set_vmdq_san_mac(hw, VMDQ_P(0)); 9660 } 9661 return err; 9662} 9663 9664/** 9665 * ixgbe_del_sanmac_netdev - Removes the SAN MAC address to the corresponding 9666 * netdev->dev_addrs 9667 * @dev: network interface device structure 9668 * 9669 * Returns non-zero on failure 9670 **/ 9671static int ixgbe_del_sanmac_netdev(struct net_device *dev) 9672{ 9673 int err = 0; 9674 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9675 struct ixgbe_mac_info *mac = &adapter->hw.mac; 9676 9677 if (is_valid_ether_addr(mac->san_addr)) { 9678 rtnl_lock(); 9679 err = dev_addr_del(dev, mac->san_addr, NETDEV_HW_ADDR_T_SAN); 9680 rtnl_unlock(); 9681 } 9682 return err; 9683} 9684 9685static void ixgbe_get_ring_stats64(struct rtnl_link_stats64 *stats, 9686 struct ixgbe_ring *ring) 9687{ 9688 u64 bytes, packets; 9689 unsigned int start; 9690 9691 if (ring) { 9692 do { 9693 start = u64_stats_fetch_begin(&ring->syncp); 9694 packets = ring->stats.packets; 9695 bytes = ring->stats.bytes; 9696 } while (u64_stats_fetch_retry(&ring->syncp, start)); 9697 stats->tx_packets += packets; 9698 stats->tx_bytes += bytes; 9699 } 9700} 9701 9702static void ixgbe_get_stats64(struct net_device *netdev, 9703 struct rtnl_link_stats64 *stats) 9704{ 9705 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9706 int i; 9707 9708 rcu_read_lock(); 9709 for (i = 0; i < adapter->num_rx_queues; i++) { 9710 struct ixgbe_ring *ring = READ_ONCE(adapter->rx_ring[i]); 9711 u64 bytes, packets; 9712 unsigned int start; 9713 9714 if (ring) { 9715 do { 9716 start = u64_stats_fetch_begin(&ring->syncp); 9717 packets = ring->stats.packets; 9718 bytes = ring->stats.bytes; 9719 } while (u64_stats_fetch_retry(&ring->syncp, start)); 9720 stats->rx_packets += packets; 9721 stats->rx_bytes += bytes; 9722 } 9723 } 9724 9725 for (i = 0; i < adapter->num_tx_queues; i++) { 9726 struct ixgbe_ring *ring = READ_ONCE(adapter->tx_ring[i]); 9727 9728 ixgbe_get_ring_stats64(stats, ring); 9729 } 9730 for (i = 0; i < adapter->num_xdp_queues; i++) { 9731 struct ixgbe_ring *ring = READ_ONCE(adapter->xdp_ring[i]); 9732 9733 ixgbe_get_ring_stats64(stats, ring); 9734 } 9735 rcu_read_unlock(); 9736 9737 /* following stats updated by ixgbe_watchdog_task() */ 9738 stats->multicast = netdev->stats.multicast; 9739 stats->rx_errors = netdev->stats.rx_errors; 9740 stats->rx_length_errors = netdev->stats.rx_length_errors; 9741 stats->rx_crc_errors = netdev->stats.rx_crc_errors; 9742 stats->rx_missed_errors = netdev->stats.rx_missed_errors; 9743} 9744 9745static int ixgbe_ndo_get_vf_stats(struct net_device *netdev, int vf, 9746 struct ifla_vf_stats *vf_stats) 9747{ 9748 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 9749 9750 if (vf < 0 || vf >= adapter->num_vfs) 9751 return -EINVAL; 9752 9753 vf_stats->rx_packets = adapter->vfinfo[vf].vfstats.gprc; 9754 vf_stats->rx_bytes = adapter->vfinfo[vf].vfstats.gorc; 9755 vf_stats->tx_packets = adapter->vfinfo[vf].vfstats.gptc; 9756 vf_stats->tx_bytes = adapter->vfinfo[vf].vfstats.gotc; 9757 vf_stats->multicast = adapter->vfinfo[vf].vfstats.mprc; 9758 9759 return 0; 9760} 9761 9762#ifdef CONFIG_IXGBE_DCB 9763/** 9764 * ixgbe_validate_rtr - verify 802.1Qp to Rx packet buffer mapping is valid. 9765 * @adapter: pointer to ixgbe_adapter 9766 * @tc: number of traffic classes currently enabled 9767 * 9768 * Configure a valid 802.1Qp to Rx packet buffer mapping ie confirm 9769 * 802.1Q priority maps to a packet buffer that exists. 9770 */ 9771static void ixgbe_validate_rtr(struct ixgbe_adapter *adapter, u8 tc) 9772{ 9773 struct ixgbe_hw *hw = &adapter->hw; 9774 u32 reg, rsave; 9775 int i; 9776 9777 /* 82598 have a static priority to TC mapping that can not 9778 * be changed so no validation is needed. 9779 */ 9780 if (hw->mac.type == ixgbe_mac_82598EB) 9781 return; 9782 9783 reg = IXGBE_READ_REG(hw, IXGBE_RTRUP2TC); 9784 rsave = reg; 9785 9786 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 9787 u8 up2tc = reg >> (i * IXGBE_RTRUP2TC_UP_SHIFT); 9788 9789 /* If up2tc is out of bounds default to zero */ 9790 if (up2tc > tc) 9791 reg &= ~(0x7 << IXGBE_RTRUP2TC_UP_SHIFT); 9792 } 9793 9794 if (reg != rsave) 9795 IXGBE_WRITE_REG(hw, IXGBE_RTRUP2TC, reg); 9796 9797 return; 9798} 9799 9800/** 9801 * ixgbe_set_prio_tc_map - Configure netdev prio tc map 9802 * @adapter: Pointer to adapter struct 9803 * 9804 * Populate the netdev user priority to tc map 9805 */ 9806static void ixgbe_set_prio_tc_map(struct ixgbe_adapter *adapter) 9807{ 9808 struct net_device *dev = adapter->netdev; 9809 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; 9810 struct ieee_ets *ets = adapter->ixgbe_ieee_ets; 9811 u8 prio; 9812 9813 for (prio = 0; prio < MAX_USER_PRIORITY; prio++) { 9814 u8 tc = 0; 9815 9816 if (adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE) 9817 tc = ixgbe_dcb_get_tc_from_up(dcb_cfg, 0, prio); 9818 else if (ets) 9819 tc = ets->prio_tc[prio]; 9820 9821 netdev_set_prio_tc_map(dev, prio, tc); 9822 } 9823} 9824 9825#endif /* CONFIG_IXGBE_DCB */ 9826static int ixgbe_reassign_macvlan_pool(struct net_device *vdev, 9827 struct netdev_nested_priv *priv) 9828{ 9829 struct ixgbe_adapter *adapter = (struct ixgbe_adapter *)priv->data; 9830 struct ixgbe_fwd_adapter *accel; 9831 int pool; 9832 9833 /* we only care about macvlans... */ 9834 if (!netif_is_macvlan(vdev)) 9835 return 0; 9836 9837 /* that have hardware offload enabled... */ 9838 accel = macvlan_accel_priv(vdev); 9839 if (!accel) 9840 return 0; 9841 9842 /* If we can relocate to a different bit do so */ 9843 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 9844 if (pool < adapter->num_rx_pools) { 9845 set_bit(pool, adapter->fwd_bitmask); 9846 accel->pool = pool; 9847 return 0; 9848 } 9849 9850 /* if we cannot find a free pool then disable the offload */ 9851 netdev_err(vdev, "L2FW offload disabled due to lack of queue resources\n"); 9852 macvlan_release_l2fw_offload(vdev); 9853 9854 /* unbind the queues and drop the subordinate channel config */ 9855 netdev_unbind_sb_channel(adapter->netdev, vdev); 9856 netdev_set_sb_channel(vdev, 0); 9857 9858 kfree(accel); 9859 9860 return 0; 9861} 9862 9863static void ixgbe_defrag_macvlan_pools(struct net_device *dev) 9864{ 9865 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9866 struct netdev_nested_priv priv = { 9867 .data = (void *)adapter, 9868 }; 9869 9870 /* flush any stale bits out of the fwd bitmask */ 9871 bitmap_clear(adapter->fwd_bitmask, 1, 63); 9872 9873 /* walk through upper devices reassigning pools */ 9874 netdev_walk_all_upper_dev_rcu(dev, ixgbe_reassign_macvlan_pool, 9875 &priv); 9876} 9877 9878/** 9879 * ixgbe_setup_tc - configure net_device for multiple traffic classes 9880 * 9881 * @dev: net device to configure 9882 * @tc: number of traffic classes to enable 9883 */ 9884int ixgbe_setup_tc(struct net_device *dev, u8 tc) 9885{ 9886 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 9887 struct ixgbe_hw *hw = &adapter->hw; 9888 9889 /* Hardware supports up to 8 traffic classes */ 9890 if (tc > adapter->dcb_cfg.num_tcs.pg_tcs) 9891 return -EINVAL; 9892 9893 if (hw->mac.type == ixgbe_mac_82598EB && tc && tc < MAX_TRAFFIC_CLASS) 9894 return -EINVAL; 9895 9896 /* Hardware has to reinitialize queues and interrupts to 9897 * match packet buffer alignment. Unfortunately, the 9898 * hardware is not flexible enough to do this dynamically. 9899 */ 9900 if (netif_running(dev)) 9901 ixgbe_close(dev); 9902 else 9903 ixgbe_reset(adapter); 9904 9905 ixgbe_clear_interrupt_scheme(adapter); 9906 9907#ifdef CONFIG_IXGBE_DCB 9908 if (tc) { 9909 if (adapter->xdp_prog) { 9910 e_warn(probe, "DCB is not supported with XDP\n"); 9911 9912 ixgbe_init_interrupt_scheme(adapter); 9913 if (netif_running(dev)) 9914 ixgbe_open(dev); 9915 return -EINVAL; 9916 } 9917 9918 netdev_set_num_tc(dev, tc); 9919 ixgbe_set_prio_tc_map(adapter); 9920 9921 adapter->hw_tcs = tc; 9922 adapter->flags |= IXGBE_FLAG_DCB_ENABLED; 9923 9924 if (adapter->hw.mac.type == ixgbe_mac_82598EB) { 9925 adapter->last_lfc_mode = adapter->hw.fc.requested_mode; 9926 adapter->hw.fc.requested_mode = ixgbe_fc_none; 9927 } 9928 } else { 9929 netdev_reset_tc(dev); 9930 9931 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 9932 adapter->hw.fc.requested_mode = adapter->last_lfc_mode; 9933 9934 adapter->flags &= ~IXGBE_FLAG_DCB_ENABLED; 9935 adapter->hw_tcs = tc; 9936 9937 adapter->temp_dcb_cfg.pfc_mode_enable = false; 9938 adapter->dcb_cfg.pfc_mode_enable = false; 9939 } 9940 9941 ixgbe_validate_rtr(adapter, tc); 9942 9943#endif /* CONFIG_IXGBE_DCB */ 9944 ixgbe_init_interrupt_scheme(adapter); 9945 9946 ixgbe_defrag_macvlan_pools(dev); 9947 9948 if (netif_running(dev)) 9949 return ixgbe_open(dev); 9950 9951 return 0; 9952} 9953 9954static int ixgbe_delete_clsu32(struct ixgbe_adapter *adapter, 9955 struct tc_cls_u32_offload *cls) 9956{ 9957 u32 hdl = cls->knode.handle; 9958 u32 uhtid = TC_U32_USERHTID(cls->knode.handle); 9959 u32 loc = cls->knode.handle & 0xfffff; 9960 int err = 0, i, j; 9961 struct ixgbe_jump_table *jump = NULL; 9962 9963 if (loc > IXGBE_MAX_HW_ENTRIES) 9964 return -EINVAL; 9965 9966 if ((uhtid != 0x800) && (uhtid >= IXGBE_MAX_LINK_HANDLE)) 9967 return -EINVAL; 9968 9969 /* Clear this filter in the link data it is associated with */ 9970 if (uhtid != 0x800) { 9971 jump = adapter->jump_tables[uhtid]; 9972 if (!jump) 9973 return -EINVAL; 9974 if (!test_bit(loc - 1, jump->child_loc_map)) 9975 return -EINVAL; 9976 clear_bit(loc - 1, jump->child_loc_map); 9977 } 9978 9979 /* Check if the filter being deleted is a link */ 9980 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 9981 jump = adapter->jump_tables[i]; 9982 if (jump && jump->link_hdl == hdl) { 9983 /* Delete filters in the hardware in the child hash 9984 * table associated with this link 9985 */ 9986 for (j = 0; j < IXGBE_MAX_HW_ENTRIES; j++) { 9987 if (!test_bit(j, jump->child_loc_map)) 9988 continue; 9989 spin_lock(&adapter->fdir_perfect_lock); 9990 err = ixgbe_update_ethtool_fdir_entry(adapter, 9991 NULL, 9992 j + 1); 9993 spin_unlock(&adapter->fdir_perfect_lock); 9994 clear_bit(j, jump->child_loc_map); 9995 } 9996 /* Remove resources for this link */ 9997 kfree(jump->input); 9998 kfree(jump->mask); 9999 kfree(jump); 10000 adapter->jump_tables[i] = NULL; 10001 return err; 10002 } 10003 } 10004 10005 spin_lock(&adapter->fdir_perfect_lock); 10006 err = ixgbe_update_ethtool_fdir_entry(adapter, NULL, loc); 10007 spin_unlock(&adapter->fdir_perfect_lock); 10008 return err; 10009} 10010 10011static int ixgbe_configure_clsu32_add_hnode(struct ixgbe_adapter *adapter, 10012 struct tc_cls_u32_offload *cls) 10013{ 10014 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 10015 10016 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 10017 return -EINVAL; 10018 10019 /* This ixgbe devices do not support hash tables at the moment 10020 * so abort when given hash tables. 10021 */ 10022 if (cls->hnode.divisor > 0) 10023 return -EINVAL; 10024 10025 set_bit(uhtid - 1, &adapter->tables); 10026 return 0; 10027} 10028 10029static int ixgbe_configure_clsu32_del_hnode(struct ixgbe_adapter *adapter, 10030 struct tc_cls_u32_offload *cls) 10031{ 10032 u32 uhtid = TC_U32_USERHTID(cls->hnode.handle); 10033 10034 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 10035 return -EINVAL; 10036 10037 clear_bit(uhtid - 1, &adapter->tables); 10038 return 0; 10039} 10040 10041#ifdef CONFIG_NET_CLS_ACT 10042struct upper_walk_data { 10043 struct ixgbe_adapter *adapter; 10044 u64 action; 10045 int ifindex; 10046 u8 queue; 10047}; 10048 10049static int get_macvlan_queue(struct net_device *upper, 10050 struct netdev_nested_priv *priv) 10051{ 10052 if (netif_is_macvlan(upper)) { 10053 struct ixgbe_fwd_adapter *vadapter = macvlan_accel_priv(upper); 10054 struct ixgbe_adapter *adapter; 10055 struct upper_walk_data *data; 10056 int ifindex; 10057 10058 data = (struct upper_walk_data *)priv->data; 10059 ifindex = data->ifindex; 10060 adapter = data->adapter; 10061 if (vadapter && upper->ifindex == ifindex) { 10062 data->queue = adapter->rx_ring[vadapter->rx_base_queue]->reg_idx; 10063 data->action = data->queue; 10064 return 1; 10065 } 10066 } 10067 10068 return 0; 10069} 10070 10071static int handle_redirect_action(struct ixgbe_adapter *adapter, int ifindex, 10072 u8 *queue, u64 *action) 10073{ 10074 struct ixgbe_ring_feature *vmdq = &adapter->ring_feature[RING_F_VMDQ]; 10075 unsigned int num_vfs = adapter->num_vfs, vf; 10076 struct netdev_nested_priv priv; 10077 struct upper_walk_data data; 10078 struct net_device *upper; 10079 10080 /* redirect to a SRIOV VF */ 10081 for (vf = 0; vf < num_vfs; ++vf) { 10082 upper = pci_get_drvdata(adapter->vfinfo[vf].vfdev); 10083 if (upper->ifindex == ifindex) { 10084 *queue = vf * __ALIGN_MASK(1, ~vmdq->mask); 10085 *action = vf + 1; 10086 *action <<= ETHTOOL_RX_FLOW_SPEC_RING_VF_OFF; 10087 return 0; 10088 } 10089 } 10090 10091 /* redirect to a offloaded macvlan netdev */ 10092 data.adapter = adapter; 10093 data.ifindex = ifindex; 10094 data.action = 0; 10095 data.queue = 0; 10096 priv.data = (void *)&data; 10097 if (netdev_walk_all_upper_dev_rcu(adapter->netdev, 10098 get_macvlan_queue, &priv)) { 10099 *action = data.action; 10100 *queue = data.queue; 10101 10102 return 0; 10103 } 10104 10105 return -EINVAL; 10106} 10107 10108static int parse_tc_actions(struct ixgbe_adapter *adapter, 10109 struct tcf_exts *exts, u64 *action, u8 *queue) 10110{ 10111 const struct tc_action *a; 10112 int i; 10113 10114 if (!tcf_exts_has_actions(exts)) 10115 return -EINVAL; 10116 10117 tcf_exts_for_each_action(i, a, exts) { 10118 /* Drop action */ 10119 if (is_tcf_gact_shot(a)) { 10120 *action = IXGBE_FDIR_DROP_QUEUE; 10121 *queue = IXGBE_FDIR_DROP_QUEUE; 10122 return 0; 10123 } 10124 10125 /* Redirect to a VF or a offloaded macvlan */ 10126 if (is_tcf_mirred_egress_redirect(a)) { 10127 struct net_device *dev = tcf_mirred_dev(a); 10128 10129 if (!dev) 10130 return -EINVAL; 10131 return handle_redirect_action(adapter, dev->ifindex, 10132 queue, action); 10133 } 10134 10135 return -EINVAL; 10136 } 10137 10138 return -EINVAL; 10139} 10140#else 10141static int parse_tc_actions(struct ixgbe_adapter *adapter, 10142 struct tcf_exts *exts, u64 *action, u8 *queue) 10143{ 10144 return -EINVAL; 10145} 10146#endif /* CONFIG_NET_CLS_ACT */ 10147 10148static int ixgbe_clsu32_build_input(struct ixgbe_fdir_filter *input, 10149 union ixgbe_atr_input *mask, 10150 struct tc_cls_u32_offload *cls, 10151 struct ixgbe_mat_field *field_ptr, 10152 struct ixgbe_nexthdr *nexthdr) 10153{ 10154 int i, j, off; 10155 __be32 val, m; 10156 bool found_entry = false, found_jump_field = false; 10157 10158 for (i = 0; i < cls->knode.sel->nkeys; i++) { 10159 off = cls->knode.sel->keys[i].off; 10160 val = cls->knode.sel->keys[i].val; 10161 m = cls->knode.sel->keys[i].mask; 10162 10163 for (j = 0; field_ptr[j].val; j++) { 10164 if (field_ptr[j].off == off) { 10165 field_ptr[j].val(input, mask, (__force u32)val, 10166 (__force u32)m); 10167 input->filter.formatted.flow_type |= 10168 field_ptr[j].type; 10169 found_entry = true; 10170 break; 10171 } 10172 } 10173 if (nexthdr) { 10174 if (nexthdr->off == cls->knode.sel->keys[i].off && 10175 nexthdr->val == 10176 (__force u32)cls->knode.sel->keys[i].val && 10177 nexthdr->mask == 10178 (__force u32)cls->knode.sel->keys[i].mask) 10179 found_jump_field = true; 10180 else 10181 continue; 10182 } 10183 } 10184 10185 if (nexthdr && !found_jump_field) 10186 return -EINVAL; 10187 10188 if (!found_entry) 10189 return 0; 10190 10191 mask->formatted.flow_type = IXGBE_ATR_L4TYPE_IPV6_MASK | 10192 IXGBE_ATR_L4TYPE_MASK; 10193 10194 if (input->filter.formatted.flow_type == IXGBE_ATR_FLOW_TYPE_IPV4) 10195 mask->formatted.flow_type &= IXGBE_ATR_L4TYPE_IPV6_MASK; 10196 10197 return 0; 10198} 10199 10200static int ixgbe_configure_clsu32(struct ixgbe_adapter *adapter, 10201 struct tc_cls_u32_offload *cls) 10202{ 10203 __be16 protocol = cls->common.protocol; 10204 u32 loc = cls->knode.handle & 0xfffff; 10205 struct ixgbe_hw *hw = &adapter->hw; 10206 struct ixgbe_mat_field *field_ptr; 10207 struct ixgbe_fdir_filter *input = NULL; 10208 union ixgbe_atr_input *mask = NULL; 10209 struct ixgbe_jump_table *jump = NULL; 10210 int i, err = -EINVAL; 10211 u8 queue; 10212 u32 uhtid, link_uhtid; 10213 10214 uhtid = TC_U32_USERHTID(cls->knode.handle); 10215 link_uhtid = TC_U32_USERHTID(cls->knode.link_handle); 10216 10217 /* At the moment cls_u32 jumps to network layer and skips past 10218 * L2 headers. The canonical method to match L2 frames is to use 10219 * negative values. However this is error prone at best but really 10220 * just broken because there is no way to "know" what sort of hdr 10221 * is in front of the network layer. Fix cls_u32 to support L2 10222 * headers when needed. 10223 */ 10224 if (protocol != htons(ETH_P_IP)) 10225 return err; 10226 10227 if (loc >= ((1024 << adapter->fdir_pballoc) - 2)) { 10228 e_err(drv, "Location out of range\n"); 10229 return err; 10230 } 10231 10232 /* cls u32 is a graph starting at root node 0x800. The driver tracks 10233 * links and also the fields used to advance the parser across each 10234 * link (e.g. nexthdr/eat parameters from 'tc'). This way we can map 10235 * the u32 graph onto the hardware parse graph denoted in ixgbe_model.h 10236 * To add support for new nodes update ixgbe_model.h parse structures 10237 * this function _should_ be generic try not to hardcode values here. 10238 */ 10239 if (uhtid == 0x800) { 10240 field_ptr = (adapter->jump_tables[0])->mat; 10241 } else { 10242 if (uhtid >= IXGBE_MAX_LINK_HANDLE) 10243 return err; 10244 if (!adapter->jump_tables[uhtid]) 10245 return err; 10246 field_ptr = (adapter->jump_tables[uhtid])->mat; 10247 } 10248 10249 if (!field_ptr) 10250 return err; 10251 10252 /* At this point we know the field_ptr is valid and need to either 10253 * build cls_u32 link or attach filter. Because adding a link to 10254 * a handle that does not exist is invalid and the same for adding 10255 * rules to handles that don't exist. 10256 */ 10257 10258 if (link_uhtid) { 10259 struct ixgbe_nexthdr *nexthdr = ixgbe_ipv4_jumps; 10260 10261 if (link_uhtid >= IXGBE_MAX_LINK_HANDLE) 10262 return err; 10263 10264 if (!test_bit(link_uhtid - 1, &adapter->tables)) 10265 return err; 10266 10267 /* Multiple filters as links to the same hash table are not 10268 * supported. To add a new filter with the same next header 10269 * but different match/jump conditions, create a new hash table 10270 * and link to it. 10271 */ 10272 if (adapter->jump_tables[link_uhtid] && 10273 (adapter->jump_tables[link_uhtid])->link_hdl) { 10274 e_err(drv, "Link filter exists for link: %x\n", 10275 link_uhtid); 10276 return err; 10277 } 10278 10279 for (i = 0; nexthdr[i].jump; i++) { 10280 if (nexthdr[i].o != cls->knode.sel->offoff || 10281 nexthdr[i].s != cls->knode.sel->offshift || 10282 nexthdr[i].m != 10283 (__force u32)cls->knode.sel->offmask) 10284 return err; 10285 10286 jump = kzalloc(sizeof(*jump), GFP_KERNEL); 10287 if (!jump) 10288 return -ENOMEM; 10289 input = kzalloc(sizeof(*input), GFP_KERNEL); 10290 if (!input) { 10291 err = -ENOMEM; 10292 goto free_jump; 10293 } 10294 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 10295 if (!mask) { 10296 err = -ENOMEM; 10297 goto free_input; 10298 } 10299 jump->input = input; 10300 jump->mask = mask; 10301 jump->link_hdl = cls->knode.handle; 10302 10303 err = ixgbe_clsu32_build_input(input, mask, cls, 10304 field_ptr, &nexthdr[i]); 10305 if (!err) { 10306 jump->mat = nexthdr[i].jump; 10307 adapter->jump_tables[link_uhtid] = jump; 10308 break; 10309 } else { 10310 kfree(mask); 10311 kfree(input); 10312 kfree(jump); 10313 } 10314 } 10315 return 0; 10316 } 10317 10318 input = kzalloc(sizeof(*input), GFP_KERNEL); 10319 if (!input) 10320 return -ENOMEM; 10321 mask = kzalloc(sizeof(*mask), GFP_KERNEL); 10322 if (!mask) { 10323 err = -ENOMEM; 10324 goto free_input; 10325 } 10326 10327 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) { 10328 if ((adapter->jump_tables[uhtid])->input) 10329 memcpy(input, (adapter->jump_tables[uhtid])->input, 10330 sizeof(*input)); 10331 if ((adapter->jump_tables[uhtid])->mask) 10332 memcpy(mask, (adapter->jump_tables[uhtid])->mask, 10333 sizeof(*mask)); 10334 10335 /* Lookup in all child hash tables if this location is already 10336 * filled with a filter 10337 */ 10338 for (i = 1; i < IXGBE_MAX_LINK_HANDLE; i++) { 10339 struct ixgbe_jump_table *link = adapter->jump_tables[i]; 10340 10341 if (link && (test_bit(loc - 1, link->child_loc_map))) { 10342 e_err(drv, "Filter exists in location: %x\n", 10343 loc); 10344 err = -EINVAL; 10345 goto err_out; 10346 } 10347 } 10348 } 10349 err = ixgbe_clsu32_build_input(input, mask, cls, field_ptr, NULL); 10350 if (err) 10351 goto err_out; 10352 10353 err = parse_tc_actions(adapter, cls->knode.exts, &input->action, 10354 &queue); 10355 if (err < 0) 10356 goto err_out; 10357 10358 input->sw_idx = loc; 10359 10360 spin_lock(&adapter->fdir_perfect_lock); 10361 10362 if (hlist_empty(&adapter->fdir_filter_list)) { 10363 memcpy(&adapter->fdir_mask, mask, sizeof(*mask)); 10364 err = ixgbe_fdir_set_input_mask_82599(hw, mask); 10365 if (err) 10366 goto err_out_w_lock; 10367 } else if (memcmp(&adapter->fdir_mask, mask, sizeof(*mask))) { 10368 err = -EINVAL; 10369 goto err_out_w_lock; 10370 } 10371 10372 ixgbe_atr_compute_perfect_hash_82599(&input->filter, mask); 10373 err = ixgbe_fdir_write_perfect_filter_82599(hw, &input->filter, 10374 input->sw_idx, queue); 10375 if (err) 10376 goto err_out_w_lock; 10377 10378 ixgbe_update_ethtool_fdir_entry(adapter, input, input->sw_idx); 10379 spin_unlock(&adapter->fdir_perfect_lock); 10380 10381 if ((uhtid != 0x800) && (adapter->jump_tables[uhtid])) 10382 set_bit(loc - 1, (adapter->jump_tables[uhtid])->child_loc_map); 10383 10384 kfree(mask); 10385 return err; 10386err_out_w_lock: 10387 spin_unlock(&adapter->fdir_perfect_lock); 10388err_out: 10389 kfree(mask); 10390free_input: 10391 kfree(input); 10392free_jump: 10393 kfree(jump); 10394 return err; 10395} 10396 10397static int ixgbe_setup_tc_cls_u32(struct ixgbe_adapter *adapter, 10398 struct tc_cls_u32_offload *cls_u32) 10399{ 10400 switch (cls_u32->command) { 10401 case TC_CLSU32_NEW_KNODE: 10402 case TC_CLSU32_REPLACE_KNODE: 10403 return ixgbe_configure_clsu32(adapter, cls_u32); 10404 case TC_CLSU32_DELETE_KNODE: 10405 return ixgbe_delete_clsu32(adapter, cls_u32); 10406 case TC_CLSU32_NEW_HNODE: 10407 case TC_CLSU32_REPLACE_HNODE: 10408 return ixgbe_configure_clsu32_add_hnode(adapter, cls_u32); 10409 case TC_CLSU32_DELETE_HNODE: 10410 return ixgbe_configure_clsu32_del_hnode(adapter, cls_u32); 10411 default: 10412 return -EOPNOTSUPP; 10413 } 10414} 10415 10416static int ixgbe_setup_tc_block_cb(enum tc_setup_type type, void *type_data, 10417 void *cb_priv) 10418{ 10419 struct ixgbe_adapter *adapter = cb_priv; 10420 10421 if (!tc_cls_can_offload_and_chain0(adapter->netdev, type_data)) 10422 return -EOPNOTSUPP; 10423 10424 switch (type) { 10425 case TC_SETUP_CLSU32: 10426 return ixgbe_setup_tc_cls_u32(adapter, type_data); 10427 default: 10428 return -EOPNOTSUPP; 10429 } 10430} 10431 10432static int ixgbe_setup_tc_mqprio(struct net_device *dev, 10433 struct tc_mqprio_qopt *mqprio) 10434{ 10435 mqprio->hw = TC_MQPRIO_HW_OFFLOAD_TCS; 10436 return ixgbe_setup_tc(dev, mqprio->num_tc); 10437} 10438 10439static LIST_HEAD(ixgbe_block_cb_list); 10440 10441static int __ixgbe_setup_tc(struct net_device *dev, enum tc_setup_type type, 10442 void *type_data) 10443{ 10444 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10445 10446 switch (type) { 10447 case TC_SETUP_BLOCK: 10448 return flow_block_cb_setup_simple(type_data, 10449 &ixgbe_block_cb_list, 10450 ixgbe_setup_tc_block_cb, 10451 adapter, adapter, true); 10452 case TC_SETUP_QDISC_MQPRIO: 10453 return ixgbe_setup_tc_mqprio(dev, type_data); 10454 default: 10455 return -EOPNOTSUPP; 10456 } 10457} 10458 10459#ifdef CONFIG_PCI_IOV 10460void ixgbe_sriov_reinit(struct ixgbe_adapter *adapter) 10461{ 10462 struct net_device *netdev = adapter->netdev; 10463 10464 rtnl_lock(); 10465 ixgbe_setup_tc(netdev, adapter->hw_tcs); 10466 rtnl_unlock(); 10467} 10468 10469#endif 10470void ixgbe_do_reset(struct net_device *netdev) 10471{ 10472 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 10473 10474 if (netif_running(netdev)) 10475 ixgbe_reinit_locked(adapter); 10476 else 10477 ixgbe_reset(adapter); 10478} 10479 10480static netdev_features_t ixgbe_fix_features(struct net_device *netdev, 10481 netdev_features_t features) 10482{ 10483 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 10484 10485 /* If Rx checksum is disabled, then RSC/LRO should also be disabled */ 10486 if (!(features & NETIF_F_RXCSUM)) 10487 features &= ~NETIF_F_LRO; 10488 10489 /* Turn off LRO if not RSC capable */ 10490 if (!(adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE)) 10491 features &= ~NETIF_F_LRO; 10492 10493 if (adapter->xdp_prog && (features & NETIF_F_LRO)) { 10494 e_dev_err("LRO is not supported with XDP\n"); 10495 features &= ~NETIF_F_LRO; 10496 } 10497 10498 return features; 10499} 10500 10501static void ixgbe_reset_l2fw_offload(struct ixgbe_adapter *adapter) 10502{ 10503 int rss = min_t(int, ixgbe_max_rss_indices(adapter), 10504 num_online_cpus()); 10505 10506 /* go back to full RSS if we're not running SR-IOV */ 10507 if (!adapter->ring_feature[RING_F_VMDQ].offset) 10508 adapter->flags &= ~(IXGBE_FLAG_VMDQ_ENABLED | 10509 IXGBE_FLAG_SRIOV_ENABLED); 10510 10511 adapter->ring_feature[RING_F_RSS].limit = rss; 10512 adapter->ring_feature[RING_F_VMDQ].limit = 1; 10513 10514 ixgbe_setup_tc(adapter->netdev, adapter->hw_tcs); 10515} 10516 10517static int ixgbe_set_features(struct net_device *netdev, 10518 netdev_features_t features) 10519{ 10520 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 10521 netdev_features_t changed = netdev->features ^ features; 10522 bool need_reset = false; 10523 10524 /* Make sure RSC matches LRO, reset if change */ 10525 if (!(features & NETIF_F_LRO)) { 10526 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 10527 need_reset = true; 10528 adapter->flags2 &= ~IXGBE_FLAG2_RSC_ENABLED; 10529 } else if ((adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) && 10530 !(adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED)) { 10531 if (adapter->rx_itr_setting == 1 || 10532 adapter->rx_itr_setting > IXGBE_MIN_RSC_ITR) { 10533 adapter->flags2 |= IXGBE_FLAG2_RSC_ENABLED; 10534 need_reset = true; 10535 } else if ((changed ^ features) & NETIF_F_LRO) { 10536 e_info(probe, "rx-usecs set too low, " 10537 "disabling RSC\n"); 10538 } 10539 } 10540 10541 /* 10542 * Check if Flow Director n-tuple support or hw_tc support was 10543 * enabled or disabled. If the state changed, we need to reset. 10544 */ 10545 if ((features & NETIF_F_NTUPLE) || (features & NETIF_F_HW_TC)) { 10546 /* turn off ATR, enable perfect filters and reset */ 10547 if (!(adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE)) 10548 need_reset = true; 10549 10550 adapter->flags &= ~IXGBE_FLAG_FDIR_HASH_CAPABLE; 10551 adapter->flags |= IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 10552 } else { 10553 /* turn off perfect filters, enable ATR and reset */ 10554 if (adapter->flags & IXGBE_FLAG_FDIR_PERFECT_CAPABLE) 10555 need_reset = true; 10556 10557 adapter->flags &= ~IXGBE_FLAG_FDIR_PERFECT_CAPABLE; 10558 10559 /* We cannot enable ATR if SR-IOV is enabled */ 10560 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED || 10561 /* We cannot enable ATR if we have 2 or more tcs */ 10562 (adapter->hw_tcs > 1) || 10563 /* We cannot enable ATR if RSS is disabled */ 10564 (adapter->ring_feature[RING_F_RSS].limit <= 1) || 10565 /* A sample rate of 0 indicates ATR disabled */ 10566 (!adapter->atr_sample_rate)) 10567 ; /* do nothing not supported */ 10568 else /* otherwise supported and set the flag */ 10569 adapter->flags |= IXGBE_FLAG_FDIR_HASH_CAPABLE; 10570 } 10571 10572 if (changed & NETIF_F_RXALL) 10573 need_reset = true; 10574 10575 netdev->features = features; 10576 10577 if ((changed & NETIF_F_HW_L2FW_DOFFLOAD) && adapter->num_rx_pools > 1) 10578 ixgbe_reset_l2fw_offload(adapter); 10579 else if (need_reset) 10580 ixgbe_do_reset(netdev); 10581 else if (changed & (NETIF_F_HW_VLAN_CTAG_RX | 10582 NETIF_F_HW_VLAN_CTAG_FILTER)) 10583 ixgbe_set_rx_mode(netdev); 10584 10585 return 1; 10586} 10587 10588static int ixgbe_ndo_fdb_add(struct ndmsg *ndm, struct nlattr *tb[], 10589 struct net_device *dev, 10590 const unsigned char *addr, u16 vid, 10591 u16 flags, bool *notified, 10592 struct netlink_ext_ack *extack) 10593{ 10594 /* guarantee we can provide a unique filter for the unicast address */ 10595 if (is_unicast_ether_addr(addr) || is_link_local_ether_addr(addr)) { 10596 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10597 u16 pool = VMDQ_P(0); 10598 10599 if (netdev_uc_count(dev) >= ixgbe_available_rars(adapter, pool)) 10600 return -ENOMEM; 10601 } 10602 10603 return ndo_dflt_fdb_add(ndm, tb, dev, addr, vid, flags); 10604} 10605 10606/** 10607 * ixgbe_configure_bridge_mode - set various bridge modes 10608 * @adapter: the private structure 10609 * @mode: requested bridge mode 10610 * 10611 * Configure some settings require for various bridge modes. 10612 **/ 10613static int ixgbe_configure_bridge_mode(struct ixgbe_adapter *adapter, 10614 __u16 mode) 10615{ 10616 struct ixgbe_hw *hw = &adapter->hw; 10617 unsigned int p, num_pools; 10618 u32 vmdctl; 10619 10620 switch (mode) { 10621 case BRIDGE_MODE_VEPA: 10622 /* disable Tx loopback, rely on switch hairpin mode */ 10623 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 0); 10624 10625 /* must enable Rx switching replication to allow multicast 10626 * packet reception on all VFs, and to enable source address 10627 * pruning. 10628 */ 10629 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 10630 vmdctl |= IXGBE_VT_CTL_REPLEN; 10631 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 10632 10633 /* enable Rx source address pruning. Note, this requires 10634 * replication to be enabled or else it does nothing. 10635 */ 10636 num_pools = adapter->num_vfs + adapter->num_rx_pools; 10637 for (p = 0; p < num_pools; p++) { 10638 if (hw->mac.ops.set_source_address_pruning) 10639 hw->mac.ops.set_source_address_pruning(hw, 10640 true, 10641 p); 10642 } 10643 break; 10644 case BRIDGE_MODE_VEB: 10645 /* enable Tx loopback for internal VF/PF communication */ 10646 IXGBE_WRITE_REG(&adapter->hw, IXGBE_PFDTXGSWC, 10647 IXGBE_PFDTXGSWC_VT_LBEN); 10648 10649 /* disable Rx switching replication unless we have SR-IOV 10650 * virtual functions 10651 */ 10652 vmdctl = IXGBE_READ_REG(hw, IXGBE_VMD_CTL); 10653 if (!adapter->num_vfs) 10654 vmdctl &= ~IXGBE_VT_CTL_REPLEN; 10655 IXGBE_WRITE_REG(hw, IXGBE_VMD_CTL, vmdctl); 10656 10657 /* disable Rx source address pruning, since we don't expect to 10658 * be receiving external loopback of our transmitted frames. 10659 */ 10660 num_pools = adapter->num_vfs + adapter->num_rx_pools; 10661 for (p = 0; p < num_pools; p++) { 10662 if (hw->mac.ops.set_source_address_pruning) 10663 hw->mac.ops.set_source_address_pruning(hw, 10664 false, 10665 p); 10666 } 10667 break; 10668 default: 10669 return -EINVAL; 10670 } 10671 10672 adapter->bridge_mode = mode; 10673 10674 e_info(drv, "enabling bridge mode: %s\n", 10675 mode == BRIDGE_MODE_VEPA ? "VEPA" : "VEB"); 10676 10677 return 0; 10678} 10679 10680static int ixgbe_ndo_bridge_setlink(struct net_device *dev, 10681 struct nlmsghdr *nlh, u16 flags, 10682 struct netlink_ext_ack *extack) 10683{ 10684 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10685 struct nlattr *attr, *br_spec; 10686 int rem; 10687 10688 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 10689 return -EOPNOTSUPP; 10690 10691 br_spec = nlmsg_find_attr(nlh, sizeof(struct ifinfomsg), IFLA_AF_SPEC); 10692 if (!br_spec) 10693 return -EINVAL; 10694 10695 nla_for_each_nested_type(attr, IFLA_BRIDGE_MODE, br_spec, rem) { 10696 __u16 mode = nla_get_u16(attr); 10697 int status = ixgbe_configure_bridge_mode(adapter, mode); 10698 10699 if (status) 10700 return status; 10701 10702 break; 10703 } 10704 10705 return 0; 10706} 10707 10708static int ixgbe_ndo_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq, 10709 struct net_device *dev, 10710 u32 filter_mask, int nlflags) 10711{ 10712 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10713 10714 if (!(adapter->flags & IXGBE_FLAG_SRIOV_ENABLED)) 10715 return 0; 10716 10717 return ndo_dflt_bridge_getlink(skb, pid, seq, dev, 10718 adapter->bridge_mode, 0, 0, nlflags, 10719 filter_mask, NULL); 10720} 10721 10722static void *ixgbe_fwd_add(struct net_device *pdev, struct net_device *vdev) 10723{ 10724 struct ixgbe_adapter *adapter = ixgbe_from_netdev(pdev); 10725 struct ixgbe_fwd_adapter *accel; 10726 int tcs = adapter->hw_tcs ? : 1; 10727 int pool, err; 10728 10729 if (adapter->xdp_prog) { 10730 e_warn(probe, "L2FW offload is not supported with XDP\n"); 10731 return ERR_PTR(-EINVAL); 10732 } 10733 10734 /* The hardware supported by ixgbe only filters on the destination MAC 10735 * address. In order to avoid issues we only support offloading modes 10736 * where the hardware can actually provide the functionality. 10737 */ 10738 if (!macvlan_supports_dest_filter(vdev)) 10739 return ERR_PTR(-EMEDIUMTYPE); 10740 10741 /* We need to lock down the macvlan to be a single queue device so that 10742 * we can reuse the tc_to_txq field in the macvlan netdev to represent 10743 * the queue mapping to our netdev. 10744 */ 10745 if (netif_is_multiqueue(vdev)) 10746 return ERR_PTR(-ERANGE); 10747 10748 pool = find_first_zero_bit(adapter->fwd_bitmask, adapter->num_rx_pools); 10749 if (pool == adapter->num_rx_pools) { 10750 u16 used_pools = adapter->num_vfs + adapter->num_rx_pools; 10751 u16 reserved_pools; 10752 10753 if (((adapter->flags & IXGBE_FLAG_DCB_ENABLED) && 10754 adapter->num_rx_pools >= (MAX_TX_QUEUES / tcs)) || 10755 adapter->num_rx_pools > IXGBE_MAX_MACVLANS) 10756 return ERR_PTR(-EBUSY); 10757 10758 /* Hardware has a limited number of available pools. Each VF, 10759 * and the PF require a pool. Check to ensure we don't 10760 * attempt to use more then the available number of pools. 10761 */ 10762 if (used_pools >= IXGBE_MAX_VF_FUNCTIONS) 10763 return ERR_PTR(-EBUSY); 10764 10765 /* Enable VMDq flag so device will be set in VM mode */ 10766 adapter->flags |= IXGBE_FLAG_VMDQ_ENABLED | 10767 IXGBE_FLAG_SRIOV_ENABLED; 10768 10769 /* Try to reserve as many queues per pool as possible, 10770 * we start with the configurations that support 4 queues 10771 * per pools, followed by 2, and then by just 1 per pool. 10772 */ 10773 if (used_pools < 32 && adapter->num_rx_pools < 16) 10774 reserved_pools = min_t(u16, 10775 32 - used_pools, 10776 16 - adapter->num_rx_pools); 10777 else if (adapter->num_rx_pools < 32) 10778 reserved_pools = min_t(u16, 10779 64 - used_pools, 10780 32 - adapter->num_rx_pools); 10781 else 10782 reserved_pools = 64 - used_pools; 10783 10784 10785 if (!reserved_pools) 10786 return ERR_PTR(-EBUSY); 10787 10788 adapter->ring_feature[RING_F_VMDQ].limit += reserved_pools; 10789 10790 /* Force reinit of ring allocation with VMDQ enabled */ 10791 err = ixgbe_setup_tc(pdev, adapter->hw_tcs); 10792 if (err) 10793 return ERR_PTR(err); 10794 10795 if (pool >= adapter->num_rx_pools) 10796 return ERR_PTR(-ENOMEM); 10797 } 10798 10799 accel = kzalloc(sizeof(*accel), GFP_KERNEL); 10800 if (!accel) 10801 return ERR_PTR(-ENOMEM); 10802 10803 set_bit(pool, adapter->fwd_bitmask); 10804 netdev_set_sb_channel(vdev, pool); 10805 accel->pool = pool; 10806 accel->netdev = vdev; 10807 10808 if (!netif_running(pdev)) 10809 return accel; 10810 10811 err = ixgbe_fwd_ring_up(adapter, accel); 10812 if (err) 10813 return ERR_PTR(err); 10814 10815 return accel; 10816} 10817 10818static void ixgbe_fwd_del(struct net_device *pdev, void *priv) 10819{ 10820 struct ixgbe_fwd_adapter *accel = priv; 10821 struct ixgbe_adapter *adapter = ixgbe_from_netdev(pdev); 10822 unsigned int rxbase = accel->rx_base_queue; 10823 unsigned int i; 10824 10825 /* delete unicast filter associated with offloaded interface */ 10826 ixgbe_del_mac_filter(adapter, accel->netdev->dev_addr, 10827 VMDQ_P(accel->pool)); 10828 10829 /* Allow remaining Rx packets to get flushed out of the 10830 * Rx FIFO before we drop the netdev for the ring. 10831 */ 10832 usleep_range(10000, 20000); 10833 10834 for (i = 0; i < adapter->num_rx_queues_per_pool; i++) { 10835 struct ixgbe_ring *ring = adapter->rx_ring[rxbase + i]; 10836 struct ixgbe_q_vector *qv = ring->q_vector; 10837 10838 /* Make sure we aren't processing any packets and clear 10839 * netdev to shut down the ring. 10840 */ 10841 if (netif_running(adapter->netdev)) 10842 napi_synchronize(&qv->napi); 10843 ring->netdev = NULL; 10844 } 10845 10846 /* unbind the queues and drop the subordinate channel config */ 10847 netdev_unbind_sb_channel(pdev, accel->netdev); 10848 netdev_set_sb_channel(accel->netdev, 0); 10849 10850 clear_bit(accel->pool, adapter->fwd_bitmask); 10851 kfree(accel); 10852} 10853 10854#define IXGBE_MAX_MAC_HDR_LEN 127 10855#define IXGBE_MAX_NETWORK_HDR_LEN 511 10856 10857static netdev_features_t 10858ixgbe_features_check(struct sk_buff *skb, struct net_device *dev, 10859 netdev_features_t features) 10860{ 10861 unsigned int network_hdr_len, mac_hdr_len; 10862 10863 /* Make certain the headers can be described by a context descriptor */ 10864 mac_hdr_len = skb_network_offset(skb); 10865 if (unlikely(mac_hdr_len > IXGBE_MAX_MAC_HDR_LEN)) 10866 return features & ~(NETIF_F_HW_CSUM | 10867 NETIF_F_SCTP_CRC | 10868 NETIF_F_GSO_UDP_L4 | 10869 NETIF_F_HW_VLAN_CTAG_TX | 10870 NETIF_F_TSO | 10871 NETIF_F_TSO6); 10872 10873 network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); 10874 if (unlikely(network_hdr_len > IXGBE_MAX_NETWORK_HDR_LEN)) 10875 return features & ~(NETIF_F_HW_CSUM | 10876 NETIF_F_SCTP_CRC | 10877 NETIF_F_GSO_UDP_L4 | 10878 NETIF_F_TSO | 10879 NETIF_F_TSO6); 10880 10881 /* We can only support IPV4 TSO in tunnels if we can mangle the 10882 * inner IP ID field, so strip TSO if MANGLEID is not supported. 10883 * IPsec offoad sets skb->encapsulation but still can handle 10884 * the TSO, so it's the exception. 10885 */ 10886 if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) { 10887#ifdef CONFIG_IXGBE_IPSEC 10888 if (!secpath_exists(skb)) 10889#endif 10890 features &= ~NETIF_F_TSO; 10891 } 10892 10893 return features; 10894} 10895 10896static int ixgbe_xdp_setup(struct net_device *dev, struct bpf_prog *prog) 10897{ 10898 int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; 10899 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10900 struct bpf_prog *old_prog; 10901 bool need_reset; 10902 int num_queues; 10903 10904 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) 10905 return -EINVAL; 10906 10907 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) 10908 return -EINVAL; 10909 10910 /* verify ixgbe ring attributes are sufficient for XDP */ 10911 for (i = 0; i < adapter->num_rx_queues; i++) { 10912 struct ixgbe_ring *ring = adapter->rx_ring[i]; 10913 10914 if (ring_is_rsc_enabled(ring)) 10915 return -EINVAL; 10916 10917 if (frame_size > ixgbe_rx_bufsz(ring)) 10918 return -EINVAL; 10919 } 10920 10921 /* if the number of cpus is much larger than the maximum of queues, 10922 * we should stop it and then return with ENOMEM like before. 10923 */ 10924 if (nr_cpu_ids > IXGBE_MAX_XDP_QS * 2) 10925 return -ENOMEM; 10926 10927 old_prog = xchg(&adapter->xdp_prog, prog); 10928 need_reset = (!!prog != !!old_prog); 10929 10930 /* If transitioning XDP modes reconfigure rings */ 10931 if (need_reset) { 10932 int err; 10933 10934 if (!prog) 10935 /* Wait until ndo_xsk_wakeup completes. */ 10936 synchronize_rcu(); 10937 err = ixgbe_setup_tc(dev, adapter->hw_tcs); 10938 10939 if (err) 10940 return -EINVAL; 10941 if (!prog) 10942 xdp_features_clear_redirect_target(dev); 10943 } else { 10944 for (i = 0; i < adapter->num_rx_queues; i++) { 10945 WRITE_ONCE(adapter->rx_ring[i]->xdp_prog, 10946 adapter->xdp_prog); 10947 } 10948 } 10949 10950 if (old_prog) 10951 bpf_prog_put(old_prog); 10952 10953 /* Kick start the NAPI context if there is an AF_XDP socket open 10954 * on that queue id. This so that receiving will start. 10955 */ 10956 if (need_reset && prog) { 10957 num_queues = min_t(int, adapter->num_rx_queues, 10958 adapter->num_xdp_queues); 10959 for (i = 0; i < num_queues; i++) 10960 if (adapter->xdp_ring[i]->xsk_pool) 10961 (void)ixgbe_xsk_wakeup(adapter->netdev, i, 10962 XDP_WAKEUP_RX); 10963 xdp_features_set_redirect_target(dev, true); 10964 } 10965 10966 return 0; 10967} 10968 10969static int ixgbe_xdp(struct net_device *dev, struct netdev_bpf *xdp) 10970{ 10971 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 10972 10973 switch (xdp->command) { 10974 case XDP_SETUP_PROG: 10975 return ixgbe_xdp_setup(dev, xdp->prog); 10976 case XDP_SETUP_XSK_POOL: 10977 return ixgbe_xsk_pool_setup(adapter, xdp->xsk.pool, 10978 xdp->xsk.queue_id); 10979 10980 default: 10981 return -EINVAL; 10982 } 10983} 10984 10985void ixgbe_xdp_ring_update_tail(struct ixgbe_ring *ring) 10986{ 10987 /* Force memory writes to complete before letting h/w know there 10988 * are new descriptors to fetch. 10989 */ 10990 wmb(); 10991 writel(ring->next_to_use, ring->tail); 10992} 10993 10994void ixgbe_xdp_ring_update_tail_locked(struct ixgbe_ring *ring) 10995{ 10996 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 10997 spin_lock(&ring->tx_lock); 10998 ixgbe_xdp_ring_update_tail(ring); 10999 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 11000 spin_unlock(&ring->tx_lock); 11001} 11002 11003static int ixgbe_xdp_xmit(struct net_device *dev, int n, 11004 struct xdp_frame **frames, u32 flags) 11005{ 11006 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 11007 struct ixgbe_ring *ring; 11008 int nxmit = 0; 11009 int i; 11010 11011 if (unlikely(test_bit(__IXGBE_DOWN, &adapter->state))) 11012 return -ENETDOWN; 11013 11014 if (!netif_carrier_ok(adapter->netdev) || 11015 !netif_running(adapter->netdev)) 11016 return -ENETDOWN; 11017 11018 if (unlikely(flags & ~XDP_XMIT_FLAGS_MASK)) 11019 return -EINVAL; 11020 11021 /* During program transitions its possible adapter->xdp_prog is assigned 11022 * but ring has not been configured yet. In this case simply abort xmit. 11023 */ 11024 ring = adapter->xdp_prog ? ixgbe_determine_xdp_ring(adapter) : NULL; 11025 if (unlikely(!ring)) 11026 return -ENXIO; 11027 11028 if (unlikely(test_bit(__IXGBE_TX_DISABLED, &ring->state))) 11029 return -ENXIO; 11030 11031 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 11032 spin_lock(&ring->tx_lock); 11033 11034 for (i = 0; i < n; i++) { 11035 struct xdp_frame *xdpf = frames[i]; 11036 int err; 11037 11038 err = ixgbe_xmit_xdp_ring(ring, xdpf); 11039 if (err != IXGBE_XDP_TX) 11040 break; 11041 nxmit++; 11042 } 11043 11044 if (unlikely(flags & XDP_XMIT_FLUSH)) 11045 ixgbe_xdp_ring_update_tail(ring); 11046 11047 if (static_branch_unlikely(&ixgbe_xdp_locking_key)) 11048 spin_unlock(&ring->tx_lock); 11049 11050 return nxmit; 11051} 11052 11053static const struct net_device_ops ixgbe_netdev_ops = { 11054 .ndo_open = ixgbe_open, 11055 .ndo_stop = ixgbe_close, 11056 .ndo_start_xmit = ixgbe_xmit_frame, 11057 .ndo_set_rx_mode = ixgbe_set_rx_mode, 11058 .ndo_validate_addr = eth_validate_addr, 11059 .ndo_set_mac_address = ixgbe_set_mac, 11060 .ndo_change_mtu = ixgbe_change_mtu, 11061 .ndo_tx_timeout = ixgbe_tx_timeout, 11062 .ndo_set_tx_maxrate = ixgbe_tx_maxrate, 11063 .ndo_vlan_rx_add_vid = ixgbe_vlan_rx_add_vid, 11064 .ndo_vlan_rx_kill_vid = ixgbe_vlan_rx_kill_vid, 11065 .ndo_eth_ioctl = ixgbe_ioctl, 11066 .ndo_set_vf_mac = ixgbe_ndo_set_vf_mac, 11067 .ndo_set_vf_vlan = ixgbe_ndo_set_vf_vlan, 11068 .ndo_set_vf_rate = ixgbe_ndo_set_vf_bw, 11069 .ndo_set_vf_spoofchk = ixgbe_ndo_set_vf_spoofchk, 11070 .ndo_set_vf_link_state = ixgbe_ndo_set_vf_link_state, 11071 .ndo_set_vf_rss_query_en = ixgbe_ndo_set_vf_rss_query_en, 11072 .ndo_set_vf_trust = ixgbe_ndo_set_vf_trust, 11073 .ndo_get_vf_config = ixgbe_ndo_get_vf_config, 11074 .ndo_get_vf_stats = ixgbe_ndo_get_vf_stats, 11075 .ndo_get_stats64 = ixgbe_get_stats64, 11076 .ndo_setup_tc = __ixgbe_setup_tc, 11077#ifdef IXGBE_FCOE 11078 .ndo_select_queue = ixgbe_select_queue, 11079 .ndo_fcoe_ddp_setup = ixgbe_fcoe_ddp_get, 11080 .ndo_fcoe_ddp_target = ixgbe_fcoe_ddp_target, 11081 .ndo_fcoe_ddp_done = ixgbe_fcoe_ddp_put, 11082 .ndo_fcoe_enable = ixgbe_fcoe_enable, 11083 .ndo_fcoe_disable = ixgbe_fcoe_disable, 11084 .ndo_fcoe_get_wwn = ixgbe_fcoe_get_wwn, 11085 .ndo_fcoe_get_hbainfo = ixgbe_fcoe_get_hbainfo, 11086#endif /* IXGBE_FCOE */ 11087 .ndo_set_features = ixgbe_set_features, 11088 .ndo_fix_features = ixgbe_fix_features, 11089 .ndo_fdb_add = ixgbe_ndo_fdb_add, 11090 .ndo_bridge_setlink = ixgbe_ndo_bridge_setlink, 11091 .ndo_bridge_getlink = ixgbe_ndo_bridge_getlink, 11092 .ndo_dfwd_add_station = ixgbe_fwd_add, 11093 .ndo_dfwd_del_station = ixgbe_fwd_del, 11094 .ndo_features_check = ixgbe_features_check, 11095 .ndo_bpf = ixgbe_xdp, 11096 .ndo_xdp_xmit = ixgbe_xdp_xmit, 11097 .ndo_xsk_wakeup = ixgbe_xsk_wakeup, 11098 .ndo_hwtstamp_get = ixgbe_ptp_hwtstamp_get, 11099 .ndo_hwtstamp_set = ixgbe_ptp_hwtstamp_set, 11100}; 11101 11102static void ixgbe_disable_txr_hw(struct ixgbe_adapter *adapter, 11103 struct ixgbe_ring *tx_ring) 11104{ 11105 unsigned long wait_delay, delay_interval; 11106 struct ixgbe_hw *hw = &adapter->hw; 11107 u8 reg_idx = tx_ring->reg_idx; 11108 int wait_loop; 11109 u32 txdctl; 11110 11111 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(reg_idx), IXGBE_TXDCTL_SWFLSH); 11112 11113 /* delay mechanism from ixgbe_disable_tx */ 11114 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 11115 11116 wait_loop = IXGBE_MAX_RX_DESC_POLL; 11117 wait_delay = delay_interval; 11118 11119 while (wait_loop--) { 11120 usleep_range(wait_delay, wait_delay + 10); 11121 wait_delay += delay_interval * 2; 11122 txdctl = IXGBE_READ_REG(hw, IXGBE_TXDCTL(reg_idx)); 11123 11124 if (!(txdctl & IXGBE_TXDCTL_ENABLE)) 11125 return; 11126 } 11127 11128 e_err(drv, "TXDCTL.ENABLE not cleared within the polling period\n"); 11129} 11130 11131static void ixgbe_disable_txr(struct ixgbe_adapter *adapter, 11132 struct ixgbe_ring *tx_ring) 11133{ 11134 set_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 11135 ixgbe_disable_txr_hw(adapter, tx_ring); 11136} 11137 11138static void ixgbe_disable_rxr_hw(struct ixgbe_adapter *adapter, 11139 struct ixgbe_ring *rx_ring) 11140{ 11141 unsigned long wait_delay, delay_interval; 11142 struct ixgbe_hw *hw = &adapter->hw; 11143 u8 reg_idx = rx_ring->reg_idx; 11144 int wait_loop; 11145 u32 rxdctl; 11146 11147 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 11148 rxdctl &= ~IXGBE_RXDCTL_ENABLE; 11149 rxdctl |= IXGBE_RXDCTL_SWFLSH; 11150 11151 /* write value back with RXDCTL.ENABLE bit cleared */ 11152 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(reg_idx), rxdctl); 11153 11154 /* RXDCTL.EN may not change on 82598 if link is down, so skip it */ 11155 if (hw->mac.type == ixgbe_mac_82598EB && 11156 !(IXGBE_READ_REG(hw, IXGBE_LINKS) & IXGBE_LINKS_UP)) 11157 return; 11158 11159 /* delay mechanism from ixgbe_disable_rx */ 11160 delay_interval = ixgbe_get_completion_timeout(adapter) / 100; 11161 11162 wait_loop = IXGBE_MAX_RX_DESC_POLL; 11163 wait_delay = delay_interval; 11164 11165 while (wait_loop--) { 11166 usleep_range(wait_delay, wait_delay + 10); 11167 wait_delay += delay_interval * 2; 11168 rxdctl = IXGBE_READ_REG(hw, IXGBE_RXDCTL(reg_idx)); 11169 11170 if (!(rxdctl & IXGBE_RXDCTL_ENABLE)) 11171 return; 11172 } 11173 11174 e_err(drv, "RXDCTL.ENABLE not cleared within the polling period\n"); 11175} 11176 11177static void ixgbe_reset_txr_stats(struct ixgbe_ring *tx_ring) 11178{ 11179 memset(&tx_ring->stats, 0, sizeof(tx_ring->stats)); 11180 memset(&tx_ring->tx_stats, 0, sizeof(tx_ring->tx_stats)); 11181} 11182 11183static void ixgbe_reset_rxr_stats(struct ixgbe_ring *rx_ring) 11184{ 11185 memset(&rx_ring->stats, 0, sizeof(rx_ring->stats)); 11186 memset(&rx_ring->rx_stats, 0, sizeof(rx_ring->rx_stats)); 11187} 11188 11189/** 11190 * ixgbe_irq_disable_single - Disable single IRQ vector 11191 * @adapter: adapter structure 11192 * @ring: ring index 11193 **/ 11194static void ixgbe_irq_disable_single(struct ixgbe_adapter *adapter, u32 ring) 11195{ 11196 struct ixgbe_hw *hw = &adapter->hw; 11197 u64 qmask = BIT_ULL(ring); 11198 u32 mask; 11199 11200 switch (adapter->hw.mac.type) { 11201 case ixgbe_mac_82598EB: 11202 mask = qmask & IXGBE_EIMC_RTX_QUEUE; 11203 IXGBE_WRITE_REG(&adapter->hw, IXGBE_EIMC, mask); 11204 break; 11205 case ixgbe_mac_82599EB: 11206 case ixgbe_mac_X540: 11207 case ixgbe_mac_X550: 11208 case ixgbe_mac_X550EM_x: 11209 case ixgbe_mac_x550em_a: 11210 mask = (qmask & 0xFFFFFFFF); 11211 if (mask) 11212 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(0), mask); 11213 mask = (qmask >> 32); 11214 if (mask) 11215 IXGBE_WRITE_REG(hw, IXGBE_EIMS_EX(1), mask); 11216 break; 11217 default: 11218 break; 11219 } 11220 IXGBE_WRITE_FLUSH(&adapter->hw); 11221 if (adapter->flags & IXGBE_FLAG_MSIX_ENABLED) 11222 synchronize_irq(adapter->msix_entries[ring].vector); 11223 else 11224 synchronize_irq(adapter->pdev->irq); 11225} 11226 11227/** 11228 * ixgbe_txrx_ring_disable - Disable Rx/Tx/XDP Tx rings 11229 * @adapter: adapter structure 11230 * @ring: ring index 11231 * 11232 * This function disables a certain Rx/Tx/XDP Tx ring. The function 11233 * assumes that the netdev is running. 11234 **/ 11235void ixgbe_txrx_ring_disable(struct ixgbe_adapter *adapter, int ring) 11236{ 11237 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 11238 11239 rx_ring = adapter->rx_ring[ring]; 11240 tx_ring = adapter->tx_ring[ring]; 11241 xdp_ring = adapter->xdp_ring[ring]; 11242 11243 ixgbe_irq_disable_single(adapter, ring); 11244 11245 /* Rx/Tx/XDP Tx share the same napi context. */ 11246 napi_disable(&rx_ring->q_vector->napi); 11247 11248 ixgbe_disable_txr(adapter, tx_ring); 11249 if (xdp_ring) 11250 ixgbe_disable_txr(adapter, xdp_ring); 11251 ixgbe_disable_rxr_hw(adapter, rx_ring); 11252 11253 if (xdp_ring) 11254 synchronize_rcu(); 11255 11256 ixgbe_clean_tx_ring(tx_ring); 11257 if (xdp_ring) 11258 ixgbe_clean_tx_ring(xdp_ring); 11259 ixgbe_clean_rx_ring(rx_ring); 11260 11261 ixgbe_reset_txr_stats(tx_ring); 11262 if (xdp_ring) 11263 ixgbe_reset_txr_stats(xdp_ring); 11264 ixgbe_reset_rxr_stats(rx_ring); 11265} 11266 11267/** 11268 * ixgbe_txrx_ring_enable - Enable Rx/Tx/XDP Tx rings 11269 * @adapter: adapter structure 11270 * @ring: ring index 11271 * 11272 * This function enables a certain Rx/Tx/XDP Tx ring. The function 11273 * assumes that the netdev is running. 11274 **/ 11275void ixgbe_txrx_ring_enable(struct ixgbe_adapter *adapter, int ring) 11276{ 11277 struct ixgbe_ring *rx_ring, *tx_ring, *xdp_ring; 11278 11279 rx_ring = adapter->rx_ring[ring]; 11280 tx_ring = adapter->tx_ring[ring]; 11281 xdp_ring = adapter->xdp_ring[ring]; 11282 11283 ixgbe_configure_tx_ring(adapter, tx_ring); 11284 if (xdp_ring) 11285 ixgbe_configure_tx_ring(adapter, xdp_ring); 11286 ixgbe_configure_rx_ring(adapter, rx_ring); 11287 11288 clear_bit(__IXGBE_TX_DISABLED, &tx_ring->state); 11289 if (xdp_ring) 11290 clear_bit(__IXGBE_TX_DISABLED, &xdp_ring->state); 11291 11292 /* Rx/Tx/XDP Tx share the same napi context. */ 11293 napi_enable(&rx_ring->q_vector->napi); 11294 ixgbe_irq_enable_queues(adapter, BIT_ULL(ring)); 11295 IXGBE_WRITE_FLUSH(&adapter->hw); 11296} 11297 11298/** 11299 * ixgbe_enumerate_functions - Get the number of ports this device has 11300 * @adapter: adapter structure 11301 * 11302 * This function enumerates the physical functions co-located on a single slot, 11303 * in order to determine how many ports a device has. This is most useful in 11304 * determining the required GT/s of PCIe bandwidth necessary for optimal 11305 * performance. 11306 **/ 11307static inline int ixgbe_enumerate_functions(struct ixgbe_adapter *adapter) 11308{ 11309 struct pci_dev *entry, *pdev = adapter->pdev; 11310 int physfns = 0; 11311 11312 /* Some cards can not use the generic count PCIe functions method, 11313 * because they are behind a parent switch, so we hardcode these with 11314 * the correct number of functions. 11315 */ 11316 if (ixgbe_pcie_from_parent(&adapter->hw)) 11317 physfns = 4; 11318 11319 list_for_each_entry(entry, &adapter->pdev->bus->devices, bus_list) { 11320 /* don't count virtual functions */ 11321 if (entry->is_virtfn) 11322 continue; 11323 11324 /* When the devices on the bus don't all match our device ID, 11325 * we can't reliably determine the correct number of 11326 * functions. This can occur if a function has been direct 11327 * attached to a virtual machine using VT-d, for example. In 11328 * this case, simply return -1 to indicate this. 11329 */ 11330 if ((entry->vendor != pdev->vendor) || 11331 (entry->device != pdev->device)) 11332 return -1; 11333 11334 physfns++; 11335 } 11336 11337 return physfns; 11338} 11339 11340/** 11341 * ixgbe_wol_supported - Check whether device supports WoL 11342 * @adapter: the adapter private structure 11343 * @device_id: the device ID 11344 * @subdevice_id: the subsystem device ID 11345 * 11346 * This function is used by probe and ethtool to determine 11347 * which devices have WoL support 11348 * 11349 **/ 11350bool ixgbe_wol_supported(struct ixgbe_adapter *adapter, u16 device_id, 11351 u16 subdevice_id) 11352{ 11353 struct ixgbe_hw *hw = &adapter->hw; 11354 u16 wol_cap = adapter->eeprom_cap & IXGBE_DEVICE_CAPS_WOL_MASK; 11355 11356 /* WOL not supported on 82598 */ 11357 if (hw->mac.type == ixgbe_mac_82598EB) 11358 return false; 11359 11360 /* check eeprom to see if WOL is enabled for X540 and newer */ 11361 if (hw->mac.type >= ixgbe_mac_X540) { 11362 if ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0_1) || 11363 ((wol_cap == IXGBE_DEVICE_CAPS_WOL_PORT0) && 11364 (hw->bus.func == 0))) 11365 return true; 11366 } 11367 11368 /* WOL is determined based on device IDs for 82599 MACs */ 11369 switch (device_id) { 11370 case IXGBE_DEV_ID_82599_SFP: 11371 /* Only these subdevices could supports WOL */ 11372 switch (subdevice_id) { 11373 case IXGBE_SUBDEV_ID_82599_560FLR: 11374 case IXGBE_SUBDEV_ID_82599_LOM_SNAP6: 11375 case IXGBE_SUBDEV_ID_82599_SFP_WOL0: 11376 case IXGBE_SUBDEV_ID_82599_SFP_2OCP: 11377 /* only support first port */ 11378 if (hw->bus.func != 0) 11379 break; 11380 fallthrough; 11381 case IXGBE_SUBDEV_ID_82599_SP_560FLR: 11382 case IXGBE_SUBDEV_ID_82599_SFP: 11383 case IXGBE_SUBDEV_ID_82599_RNDC: 11384 case IXGBE_SUBDEV_ID_82599_ECNA_DP: 11385 case IXGBE_SUBDEV_ID_82599_SFP_1OCP: 11386 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM1: 11387 case IXGBE_SUBDEV_ID_82599_SFP_LOM_OEM2: 11388 return true; 11389 } 11390 break; 11391 case IXGBE_DEV_ID_82599EN_SFP: 11392 /* Only these subdevices support WOL */ 11393 switch (subdevice_id) { 11394 case IXGBE_SUBDEV_ID_82599EN_SFP_OCP1: 11395 return true; 11396 } 11397 break; 11398 case IXGBE_DEV_ID_82599_COMBO_BACKPLANE: 11399 /* All except this subdevice support WOL */ 11400 if (subdevice_id != IXGBE_SUBDEV_ID_82599_KX4_KR_MEZZ) 11401 return true; 11402 break; 11403 case IXGBE_DEV_ID_82599_KX4: 11404 return true; 11405 default: 11406 break; 11407 } 11408 11409 return false; 11410} 11411 11412/** 11413 * ixgbe_set_fw_version_e610 - Set FW version specifically on E610 adapters 11414 * @adapter: the adapter private structure 11415 * 11416 * This function is used by probe and ethtool to determine the FW version to 11417 * format to display. The FW version is taken from the EEPROM/NVM. 11418 * 11419 */ 11420void ixgbe_set_fw_version_e610(struct ixgbe_adapter *adapter) 11421{ 11422 struct ixgbe_orom_info *orom = &adapter->hw.flash.orom; 11423 struct ixgbe_nvm_info *nvm = &adapter->hw.flash.nvm; 11424 11425 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11426 "%x.%02x 0x%x %d.%d.%d", nvm->major, nvm->minor, 11427 nvm->eetrack, orom->major, orom->build, orom->patch); 11428} 11429 11430/** 11431 * ixgbe_set_fw_version - Set FW version 11432 * @adapter: the adapter private structure 11433 * 11434 * This function is used by probe and ethtool to determine the FW version to 11435 * format to display. The FW version is taken from the EEPROM/NVM. 11436 */ 11437static void ixgbe_set_fw_version(struct ixgbe_adapter *adapter) 11438{ 11439 struct ixgbe_hw *hw = &adapter->hw; 11440 struct ixgbe_nvm_version nvm_ver; 11441 11442 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11443 ixgbe_set_fw_version_e610(adapter); 11444 return; 11445 } 11446 11447 ixgbe_get_oem_prod_version(hw, &nvm_ver); 11448 if (nvm_ver.oem_valid) { 11449 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11450 "%x.%x.%x", nvm_ver.oem_major, nvm_ver.oem_minor, 11451 nvm_ver.oem_release); 11452 return; 11453 } 11454 11455 ixgbe_get_etk_id(hw, &nvm_ver); 11456 ixgbe_get_orom_version(hw, &nvm_ver); 11457 11458 if (nvm_ver.or_valid) { 11459 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11460 "0x%08x, %d.%d.%d", nvm_ver.etk_id, nvm_ver.or_major, 11461 nvm_ver.or_build, nvm_ver.or_patch); 11462 return; 11463 } 11464 11465 /* Set ETrack ID format */ 11466 snprintf(adapter->eeprom_id, sizeof(adapter->eeprom_id), 11467 "0x%08x", nvm_ver.etk_id); 11468} 11469 11470/** 11471 * ixgbe_recovery_probe - Handle FW recovery mode during probe 11472 * @adapter: the adapter private structure 11473 * 11474 * Perform limited driver initialization when FW error is detected. 11475 * 11476 * Return: 0 on successful probe for E610, -EIO if recovery mode is detected 11477 * for non-E610 adapter, error status code on any other case. 11478 */ 11479static int ixgbe_recovery_probe(struct ixgbe_adapter *adapter) 11480{ 11481 struct pci_dev *pdev = adapter->pdev; 11482 struct ixgbe_hw *hw = &adapter->hw; 11483 int err = -EIO; 11484 11485 if (hw->mac.type != ixgbe_mac_e610) 11486 return err; 11487 11488 ixgbe_get_hw_control(adapter); 11489 err = ixgbe_get_flash_data(&adapter->hw); 11490 if (err) 11491 goto err_release_hw_control; 11492 11493 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 11494 INIT_WORK(&adapter->service_task, ixgbe_recovery_service_task); 11495 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 11496 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 11497 11498 if (hw->mac.ops.get_bus_info) 11499 hw->mac.ops.get_bus_info(hw); 11500 11501 pci_set_drvdata(pdev, adapter); 11502 /* We are creating devlink interface so NIC can be managed, 11503 * e.g. new NVM image loaded 11504 */ 11505 devl_lock(adapter->devlink); 11506 ixgbe_devlink_register_port(adapter); 11507 SET_NETDEV_DEVLINK_PORT(adapter->netdev, 11508 &adapter->devlink_port); 11509 ixgbe_devlink_init_regions(adapter); 11510 devl_register(adapter->devlink); 11511 devl_unlock(adapter->devlink); 11512 11513 return 0; 11514err_release_hw_control: 11515 ixgbe_release_hw_control(adapter); 11516 return err; 11517} 11518 11519/** 11520 * ixgbe_probe - Device Initialization Routine 11521 * @pdev: PCI device information struct 11522 * @ent: entry in ixgbe_pci_tbl 11523 * 11524 * Returns 0 on success, negative on failure 11525 * 11526 * ixgbe_probe initializes an adapter identified by a pci_dev structure. 11527 * The OS initialization, configuring of the adapter private structure, 11528 * and a hardware reset occur. 11529 **/ 11530static int ixgbe_probe(struct pci_dev *pdev, const struct pci_device_id *ent) 11531{ 11532 struct net_device *netdev; 11533 struct ixgbe_netdevice_priv *netdev_priv_wrapper; 11534 struct ixgbe_adapter *adapter = NULL; 11535 struct ixgbe_hw *hw; 11536 const struct ixgbe_info *ii = ixgbe_info_tbl[ent->driver_data]; 11537 unsigned int indices = MAX_TX_QUEUES; 11538 u8 part_str[IXGBE_PBANUM_LENGTH]; 11539 int i, err, expected_gts; 11540 bool disable_dev = false; 11541#ifdef IXGBE_FCOE 11542 u16 device_caps; 11543#endif 11544 u32 eec; 11545 11546 /* Catch broken hardware that put the wrong VF device ID in 11547 * the PCIe SR-IOV capability. 11548 */ 11549 if (pdev->is_virtfn) { 11550 WARN(1, KERN_ERR "%s (%hx:%hx) should not be a VF!\n", 11551 pci_name(pdev), pdev->vendor, pdev->device); 11552 return -EINVAL; 11553 } 11554 11555 err = pci_enable_device_mem(pdev); 11556 if (err) 11557 return err; 11558 11559 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 11560 if (err) { 11561 dev_err(&pdev->dev, 11562 "No usable DMA configuration, aborting\n"); 11563 goto err_dma; 11564 } 11565 11566 err = pci_request_mem_regions(pdev, ixgbe_driver_name); 11567 if (err) { 11568 dev_err(&pdev->dev, 11569 "pci_request_selected_regions failed 0x%x\n", err); 11570 goto err_pci_reg; 11571 } 11572 11573 pci_set_master(pdev); 11574 pci_save_state(pdev); 11575 11576 if (ii->mac == ixgbe_mac_82598EB) { 11577#ifdef CONFIG_IXGBE_DCB 11578 /* 8 TC w/ 4 queues per TC */ 11579 indices = 4 * MAX_TRAFFIC_CLASS; 11580#else 11581 indices = IXGBE_MAX_RSS_INDICES; 11582#endif 11583 } else if (ii->mac == ixgbe_mac_e610) { 11584 indices = IXGBE_MAX_RSS_INDICES_X550; 11585 } 11586 11587 adapter = ixgbe_allocate_devlink(&pdev->dev); 11588 if (IS_ERR(adapter)) { 11589 err = PTR_ERR(adapter); 11590 goto err_devlink; 11591 } 11592 11593 netdev = alloc_etherdev_mq(sizeof(*netdev_priv_wrapper), indices); 11594 if (!netdev) { 11595 err = -ENOMEM; 11596 goto err_alloc_etherdev; 11597 } 11598 11599 SET_NETDEV_DEV(netdev, &pdev->dev); 11600 11601 netdev_priv_wrapper = netdev_priv(netdev); 11602 netdev_priv_wrapper->adapter = adapter; 11603 11604 adapter->netdev = netdev; 11605 adapter->pdev = pdev; 11606 hw = &adapter->hw; 11607 hw->back = adapter; 11608 adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); 11609 11610 hw->hw_addr = ioremap(pci_resource_start(pdev, 0), 11611 pci_resource_len(pdev, 0)); 11612 adapter->io_addr = hw->hw_addr; 11613 if (!hw->hw_addr) { 11614 err = -EIO; 11615 goto err_ioremap; 11616 } 11617 11618 /* Setup hw api */ 11619 hw->mac.ops = *ii->mac_ops; 11620 hw->mac.type = ii->mac; 11621 hw->mvals = ii->mvals; 11622 if (ii->link_ops) 11623 hw->link.ops = *ii->link_ops; 11624 11625 /* EEPROM */ 11626 hw->eeprom.ops = *ii->eeprom_ops; 11627 eec = IXGBE_READ_REG(hw, IXGBE_EEC(hw)); 11628 if (ixgbe_removed(hw->hw_addr)) { 11629 err = -EIO; 11630 goto err_ioremap; 11631 } 11632 /* If EEPROM is valid (bit 8 = 1), use default otherwise use bit bang */ 11633 if (!(eec & BIT(8))) 11634 hw->eeprom.ops.read = &ixgbe_read_eeprom_bit_bang_generic; 11635 11636 /* PHY */ 11637 hw->phy.ops = *ii->phy_ops; 11638 hw->phy.sfp_type = ixgbe_sfp_type_unknown; 11639 /* ixgbe_identify_phy_generic will set prtad and mmds properly */ 11640 hw->phy.mdio.prtad = MDIO_PRTAD_NONE; 11641 hw->phy.mdio.mmds = 0; 11642 hw->phy.mdio.mode_support = MDIO_SUPPORTS_C45 | MDIO_EMULATE_C22; 11643 hw->phy.mdio.dev = netdev; 11644 hw->phy.mdio.mdio_read = ixgbe_mdio_read; 11645 hw->phy.mdio.mdio_write = ixgbe_mdio_write; 11646 11647 netdev->netdev_ops = &ixgbe_netdev_ops; 11648 ixgbe_set_ethtool_ops(netdev); 11649 netdev->watchdog_timeo = 5 * HZ; 11650 strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); 11651 11652 /* setup the private structure */ 11653 err = ixgbe_sw_init(adapter, ii); 11654 if (err) 11655 goto err_sw_init; 11656 11657 if (ixgbe_check_fw_error(adapter)) { 11658 err = ixgbe_recovery_probe(adapter); 11659 if (err) 11660 goto err_sw_init; 11661 11662 return 0; 11663 } 11664 11665 if (adapter->hw.mac.type == ixgbe_mac_e610) { 11666 err = ixgbe_get_caps(&adapter->hw); 11667 if (err) 11668 dev_err(&pdev->dev, "ixgbe_get_caps failed %d\n", err); 11669 11670 err = ixgbe_get_flash_data(&adapter->hw); 11671 if (err) 11672 goto err_sw_init; 11673 } 11674 11675 if (adapter->hw.mac.type == ixgbe_mac_82599EB) 11676 adapter->flags2 |= IXGBE_FLAG2_AUTO_DISABLE_VF; 11677 11678 switch (adapter->hw.mac.type) { 11679 case ixgbe_mac_X550: 11680 case ixgbe_mac_X550EM_x: 11681 case ixgbe_mac_e610: 11682 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550; 11683 break; 11684 case ixgbe_mac_x550em_a: 11685 netdev->udp_tunnel_nic_info = &ixgbe_udp_tunnels_x550em_a; 11686 break; 11687 default: 11688 break; 11689 } 11690 11691 /* Make it possible the adapter to be woken up via WOL */ 11692 switch (adapter->hw.mac.type) { 11693 case ixgbe_mac_82599EB: 11694 case ixgbe_mac_X540: 11695 case ixgbe_mac_X550: 11696 case ixgbe_mac_X550EM_x: 11697 case ixgbe_mac_x550em_a: 11698 case ixgbe_mac_e610: 11699 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 11700 break; 11701 default: 11702 break; 11703 } 11704 11705 /* 11706 * If there is a fan on this device and it has failed log the 11707 * failure. 11708 */ 11709 if (adapter->flags & IXGBE_FLAG_FAN_FAIL_CAPABLE) { 11710 u32 esdp = IXGBE_READ_REG(hw, IXGBE_ESDP); 11711 if (esdp & IXGBE_ESDP_SDP1) 11712 e_crit(probe, "Fan has stopped, replace the adapter\n"); 11713 } 11714 11715 if (allow_unsupported_sfp) 11716 hw->allow_unsupported_sfp = allow_unsupported_sfp; 11717 11718 /* reset_hw fills in the perm_addr as well */ 11719 hw->phy.reset_if_overtemp = true; 11720 err = hw->mac.ops.reset_hw(hw); 11721 hw->phy.reset_if_overtemp = false; 11722 ixgbe_set_eee_capable(adapter); 11723 if (err == -ENOENT) { 11724 err = 0; 11725 } else if (err == -EOPNOTSUPP) { 11726 e_dev_err("failed to load because an unsupported SFP+ or QSFP module type was detected.\n"); 11727 e_dev_err("Reload the driver after installing a supported module.\n"); 11728 goto err_sw_init; 11729 } else if (err) { 11730 e_dev_err("HW Init failed: %d\n", err); 11731 goto err_sw_init; 11732 } 11733 11734#ifdef CONFIG_PCI_IOV 11735 /* SR-IOV not supported on the 82598 */ 11736 if (adapter->hw.mac.type == ixgbe_mac_82598EB) 11737 goto skip_sriov; 11738 /* Mailbox */ 11739 ixgbe_init_mbx_params_pf(hw); 11740 hw->mbx.ops = ii->mbx_ops; 11741 pci_sriov_set_totalvfs(pdev, IXGBE_MAX_VFS_DRV_LIMIT); 11742 ixgbe_enable_sriov(adapter, max_vfs); 11743skip_sriov: 11744 11745#endif 11746 netdev->features = NETIF_F_SG | 11747 NETIF_F_TSO | 11748 NETIF_F_TSO6 | 11749 NETIF_F_RXHASH | 11750 NETIF_F_RXCSUM | 11751 NETIF_F_HW_CSUM; 11752 11753#define IXGBE_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ 11754 NETIF_F_GSO_GRE_CSUM | \ 11755 NETIF_F_GSO_IPXIP4 | \ 11756 NETIF_F_GSO_IPXIP6 | \ 11757 NETIF_F_GSO_UDP_TUNNEL | \ 11758 NETIF_F_GSO_UDP_TUNNEL_CSUM) 11759 11760 netdev->gso_partial_features = IXGBE_GSO_PARTIAL_FEATURES; 11761 netdev->features |= NETIF_F_GSO_PARTIAL | 11762 IXGBE_GSO_PARTIAL_FEATURES; 11763 11764 if (hw->mac.type >= ixgbe_mac_82599EB) 11765 netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_GSO_UDP_L4; 11766 11767#ifdef CONFIG_IXGBE_IPSEC 11768#define IXGBE_ESP_FEATURES (NETIF_F_HW_ESP | \ 11769 NETIF_F_HW_ESP_TX_CSUM | \ 11770 NETIF_F_GSO_ESP) 11771 11772 if (adapter->ipsec) 11773 netdev->features |= IXGBE_ESP_FEATURES; 11774#endif 11775 /* copy netdev features into list of user selectable features */ 11776 netdev->hw_features |= netdev->features | 11777 NETIF_F_HW_VLAN_CTAG_FILTER | 11778 NETIF_F_HW_VLAN_CTAG_RX | 11779 NETIF_F_HW_VLAN_CTAG_TX | 11780 NETIF_F_RXALL | 11781 NETIF_F_HW_L2FW_DOFFLOAD; 11782 11783 if (hw->mac.type >= ixgbe_mac_82599EB) 11784 netdev->hw_features |= NETIF_F_NTUPLE | 11785 NETIF_F_HW_TC; 11786 11787 netdev->features |= NETIF_F_HIGHDMA; 11788 11789 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; 11790 netdev->hw_enc_features |= netdev->vlan_features; 11791 netdev->mpls_features |= NETIF_F_SG | 11792 NETIF_F_TSO | 11793 NETIF_F_TSO6 | 11794 NETIF_F_HW_CSUM; 11795 netdev->mpls_features |= IXGBE_GSO_PARTIAL_FEATURES; 11796 11797 /* set this bit last since it cannot be part of vlan_features */ 11798 netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | 11799 NETIF_F_HW_VLAN_CTAG_RX | 11800 NETIF_F_HW_VLAN_CTAG_TX; 11801 11802 netdev->priv_flags |= IFF_UNICAST_FLT; 11803 netdev->priv_flags |= IFF_SUPP_NOFCS; 11804 11805 netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | 11806 NETDEV_XDP_ACT_XSK_ZEROCOPY; 11807 11808 /* MTU range: 68 - 9710 */ 11809 netdev->min_mtu = ETH_MIN_MTU; 11810 netdev->max_mtu = IXGBE_MAX_JUMBO_FRAME_SIZE - (ETH_HLEN + ETH_FCS_LEN); 11811 11812#ifdef CONFIG_IXGBE_DCB 11813 if (adapter->flags & IXGBE_FLAG_DCB_CAPABLE) 11814 netdev->dcbnl_ops = &ixgbe_dcbnl_ops; 11815#endif 11816 11817#ifdef IXGBE_FCOE 11818 if (adapter->flags & IXGBE_FLAG_FCOE_CAPABLE) { 11819 unsigned int fcoe_l; 11820 11821 if (hw->mac.ops.get_device_caps) { 11822 hw->mac.ops.get_device_caps(hw, &device_caps); 11823 if (device_caps & IXGBE_DEVICE_CAPS_FCOE_OFFLOADS) 11824 adapter->flags &= ~IXGBE_FLAG_FCOE_CAPABLE; 11825 } 11826 11827 11828 fcoe_l = min_t(int, IXGBE_FCRETA_SIZE, num_online_cpus()); 11829 adapter->ring_feature[RING_F_FCOE].limit = fcoe_l; 11830 11831 netdev->features |= NETIF_F_FSO | 11832 NETIF_F_FCOE_CRC; 11833 11834 netdev->vlan_features |= NETIF_F_FSO | 11835 NETIF_F_FCOE_CRC; 11836 } 11837#endif /* IXGBE_FCOE */ 11838 if (adapter->flags2 & IXGBE_FLAG2_RSC_CAPABLE) 11839 netdev->hw_features |= NETIF_F_LRO; 11840 if (adapter->flags2 & IXGBE_FLAG2_RSC_ENABLED) 11841 netdev->features |= NETIF_F_LRO; 11842 11843 /* make sure the EEPROM is good */ 11844 if (hw->eeprom.ops.validate_checksum(hw, NULL) < 0) { 11845 e_dev_err("The EEPROM Checksum Is Not Valid\n"); 11846 err = -EIO; 11847 goto err_sw_init; 11848 } 11849 11850 eth_platform_get_mac_address(&adapter->pdev->dev, 11851 adapter->hw.mac.perm_addr); 11852 11853 eth_hw_addr_set(netdev, hw->mac.perm_addr); 11854 11855 if (!is_valid_ether_addr(netdev->dev_addr)) { 11856 e_dev_err("invalid MAC address\n"); 11857 err = -EIO; 11858 goto err_sw_init; 11859 } 11860 11861 /* Set hw->mac.addr to permanent MAC address */ 11862 ether_addr_copy(hw->mac.addr, hw->mac.perm_addr); 11863 ixgbe_mac_set_default_filter(adapter); 11864 11865 timer_setup(&adapter->service_timer, ixgbe_service_timer, 0); 11866 11867 if (ixgbe_removed(hw->hw_addr)) { 11868 err = -EIO; 11869 goto err_sw_init; 11870 } 11871 INIT_WORK(&adapter->service_task, ixgbe_service_task); 11872 set_bit(__IXGBE_SERVICE_INITED, &adapter->state); 11873 clear_bit(__IXGBE_SERVICE_SCHED, &adapter->state); 11874 11875 err = ixgbe_init_interrupt_scheme(adapter); 11876 if (err) 11877 goto err_sw_init; 11878 11879 for (i = 0; i < adapter->num_rx_queues; i++) 11880 u64_stats_init(&adapter->rx_ring[i]->syncp); 11881 for (i = 0; i < adapter->num_tx_queues; i++) 11882 u64_stats_init(&adapter->tx_ring[i]->syncp); 11883 for (i = 0; i < adapter->num_xdp_queues; i++) 11884 u64_stats_init(&adapter->xdp_ring[i]->syncp); 11885 11886 /* WOL not supported for all devices */ 11887 adapter->wol = 0; 11888 hw->eeprom.ops.read(hw, 0x2c, &adapter->eeprom_cap); 11889 hw->wol_enabled = ixgbe_wol_supported(adapter, pdev->device, 11890 pdev->subsystem_device); 11891 if (hw->wol_enabled) 11892 adapter->wol = IXGBE_WUFC_MAG; 11893 11894 device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); 11895 11896 /* save off EEPROM version number */ 11897 ixgbe_set_fw_version(adapter); 11898 11899 /* pick up the PCI bus settings for reporting later */ 11900 if (ixgbe_pcie_from_parent(hw)) 11901 ixgbe_get_parent_bus_info(adapter); 11902 else 11903 hw->mac.ops.get_bus_info(hw); 11904 11905 /* calculate the expected PCIe bandwidth required for optimal 11906 * performance. Note that some older parts will never have enough 11907 * bandwidth due to being older generation PCIe parts. We clamp these 11908 * parts to ensure no warning is displayed if it can't be fixed. 11909 */ 11910 switch (hw->mac.type) { 11911 case ixgbe_mac_82598EB: 11912 expected_gts = min(ixgbe_enumerate_functions(adapter) * 10, 16); 11913 break; 11914 default: 11915 expected_gts = ixgbe_enumerate_functions(adapter) * 10; 11916 break; 11917 } 11918 11919 /* don't check link if we failed to enumerate functions */ 11920 if (expected_gts > 0) 11921 ixgbe_check_minimum_link(adapter, expected_gts); 11922 11923 err = hw->eeprom.ops.read_pba_string(hw, part_str, sizeof(part_str)); 11924 if (err) 11925 strscpy(part_str, "Unknown", sizeof(part_str)); 11926 if (ixgbe_is_sfp(hw) && hw->phy.sfp_type != ixgbe_sfp_type_not_present) 11927 e_dev_info("MAC: %d, PHY: %d, SFP+: %d, PBA No: %s\n", 11928 hw->mac.type, hw->phy.type, hw->phy.sfp_type, 11929 part_str); 11930 else 11931 e_dev_info("MAC: %d, PHY: %d, PBA No: %s\n", 11932 hw->mac.type, hw->phy.type, part_str); 11933 11934 e_dev_info("%pM\n", netdev->dev_addr); 11935 11936 /* reset the hardware with the new settings */ 11937 err = hw->mac.ops.start_hw(hw); 11938 if (err == -EACCES) { 11939 /* We are running on a pre-production device, log a warning */ 11940 e_dev_warn("This device is a pre-production adapter/LOM. " 11941 "Please be aware there may be issues associated " 11942 "with your hardware. If you are experiencing " 11943 "problems please contact your Intel or hardware " 11944 "representative who provided you with this " 11945 "hardware.\n"); 11946 } 11947 strcpy(netdev->name, "eth%d"); 11948 pci_set_drvdata(pdev, adapter); 11949 11950 devl_lock(adapter->devlink); 11951 ixgbe_devlink_register_port(adapter); 11952 SET_NETDEV_DEVLINK_PORT(adapter->netdev, &adapter->devlink_port); 11953 11954 err = register_netdev(netdev); 11955 if (err) 11956 goto err_register; 11957 11958 11959 /* power down the optics for 82599 SFP+ fiber */ 11960 if (hw->mac.ops.disable_tx_laser) 11961 hw->mac.ops.disable_tx_laser(hw); 11962 11963 /* carrier off reporting is important to ethtool even BEFORE open */ 11964 netif_carrier_off(netdev); 11965 11966#ifdef CONFIG_IXGBE_DCA 11967 if (dca_add_requester(&pdev->dev) == 0) { 11968 adapter->flags |= IXGBE_FLAG_DCA_ENABLED; 11969 ixgbe_setup_dca(adapter); 11970 } 11971#endif 11972 if (adapter->flags & IXGBE_FLAG_SRIOV_ENABLED) { 11973 e_info(probe, "IOV is enabled with %d VFs\n", adapter->num_vfs); 11974 for (i = 0; i < adapter->num_vfs; i++) 11975 ixgbe_vf_configuration(pdev, (i | 0x10000000)); 11976 } 11977 11978 /* firmware requires driver version to be 0xFFFFFFFF 11979 * since os does not support feature 11980 */ 11981 if (hw->mac.ops.set_fw_drv_ver) 11982 hw->mac.ops.set_fw_drv_ver(hw, 0xFF, 0xFF, 0xFF, 0xFF, 11983 sizeof(UTS_RELEASE) - 1, 11984 UTS_RELEASE); 11985 11986 /* add san mac addr to netdev */ 11987 ixgbe_add_sanmac_netdev(netdev); 11988 11989 e_dev_info("%s\n", ixgbe_default_device_descr); 11990 11991#ifdef CONFIG_IXGBE_HWMON 11992 if (ixgbe_sysfs_init(adapter)) 11993 e_err(probe, "failed to allocate sysfs resources\n"); 11994#endif /* CONFIG_IXGBE_HWMON */ 11995 11996 ixgbe_dbg_adapter_init(adapter); 11997 11998 /* setup link for SFP devices with MNG FW, else wait for IXGBE_UP */ 11999 if (ixgbe_mng_enabled(hw) && ixgbe_is_sfp(hw) && hw->mac.ops.setup_link) 12000 hw->mac.ops.setup_link(hw, 12001 IXGBE_LINK_SPEED_10GB_FULL | IXGBE_LINK_SPEED_1GB_FULL, 12002 true); 12003 12004 err = ixgbe_mii_bus_init(hw); 12005 if (err) 12006 goto err_netdev; 12007 12008 ixgbe_devlink_init_regions(adapter); 12009 devl_register(adapter->devlink); 12010 devl_unlock(adapter->devlink); 12011 12012 if (ixgbe_fwlog_init(hw)) 12013 e_dev_info("Firmware logging not supported\n"); 12014 12015 return 0; 12016 12017err_netdev: 12018 unregister_netdev(netdev); 12019err_register: 12020 devl_port_unregister(&adapter->devlink_port); 12021 devl_unlock(adapter->devlink); 12022 ixgbe_release_hw_control(adapter); 12023 ixgbe_clear_interrupt_scheme(adapter); 12024err_sw_init: 12025 if (hw->mac.type == ixgbe_mac_e610) 12026 mutex_destroy(&adapter->hw.aci.lock); 12027 ixgbe_disable_sriov(adapter); 12028 adapter->flags2 &= ~IXGBE_FLAG2_SEARCH_FOR_SFP; 12029 iounmap(adapter->io_addr); 12030 kfree(adapter->jump_tables[0]); 12031 kfree(adapter->mac_table); 12032 kfree(adapter->rss_key); 12033 bitmap_free(adapter->af_xdp_zc_qps); 12034err_ioremap: 12035 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 12036 free_netdev(netdev); 12037err_alloc_etherdev: 12038 devlink_free(adapter->devlink); 12039 pci_release_mem_regions(pdev); 12040err_devlink: 12041err_pci_reg: 12042err_dma: 12043 if (!adapter || disable_dev) 12044 pci_disable_device(pdev); 12045 return err; 12046} 12047 12048/** 12049 * ixgbe_remove - Device Removal Routine 12050 * @pdev: PCI device information struct 12051 * 12052 * ixgbe_remove is called by the PCI subsystem to alert the driver 12053 * that it should release a PCI device. This could be caused by a 12054 * Hot-Plug event, or because the driver is going to be removed from 12055 * memory. 12056 **/ 12057static void ixgbe_remove(struct pci_dev *pdev) 12058{ 12059 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 12060 struct net_device *netdev; 12061 bool disable_dev; 12062 int i; 12063 12064 /* if !adapter then we already cleaned up in probe */ 12065 if (!adapter) 12066 return; 12067 12068 netdev = adapter->netdev; 12069 devl_lock(adapter->devlink); 12070 devl_unregister(adapter->devlink); 12071 ixgbe_devlink_destroy_regions(adapter); 12072 ixgbe_fwlog_deinit(&adapter->hw); 12073 ixgbe_dbg_adapter_exit(adapter); 12074 12075 set_bit(__IXGBE_REMOVING, &adapter->state); 12076 cancel_work_sync(&adapter->service_task); 12077 12078 if (adapter->hw.mac.type == ixgbe_mac_e610) 12079 ixgbe_disable_link_status_events(adapter); 12080 12081 if (adapter->mii_bus) 12082 mdiobus_unregister(adapter->mii_bus); 12083 12084#ifdef CONFIG_IXGBE_DCA 12085 if (adapter->flags & IXGBE_FLAG_DCA_ENABLED) { 12086 adapter->flags &= ~IXGBE_FLAG_DCA_ENABLED; 12087 dca_remove_requester(&pdev->dev); 12088 IXGBE_WRITE_REG(&adapter->hw, IXGBE_DCA_CTRL, 12089 IXGBE_DCA_CTRL_DCA_DISABLE); 12090 } 12091 12092#endif 12093#ifdef CONFIG_IXGBE_HWMON 12094 ixgbe_sysfs_exit(adapter); 12095#endif /* CONFIG_IXGBE_HWMON */ 12096 12097 /* remove the added san mac */ 12098 ixgbe_del_sanmac_netdev(netdev); 12099 12100#ifdef CONFIG_PCI_IOV 12101 ixgbe_disable_sriov(adapter); 12102#endif 12103 if (netdev->reg_state == NETREG_REGISTERED) 12104 unregister_netdev(netdev); 12105 12106 devl_port_unregister(&adapter->devlink_port); 12107 devl_unlock(adapter->devlink); 12108 12109 ixgbe_stop_ipsec_offload(adapter); 12110 ixgbe_clear_interrupt_scheme(adapter); 12111 12112 ixgbe_release_hw_control(adapter); 12113 12114#ifdef CONFIG_DCB 12115 kfree(adapter->ixgbe_ieee_pfc); 12116 kfree(adapter->ixgbe_ieee_ets); 12117 12118#endif 12119 iounmap(adapter->io_addr); 12120 pci_release_mem_regions(pdev); 12121 12122 e_dev_info("complete\n"); 12123 12124 for (i = 0; i < IXGBE_MAX_LINK_HANDLE; i++) { 12125 if (adapter->jump_tables[i]) { 12126 kfree(adapter->jump_tables[i]->input); 12127 kfree(adapter->jump_tables[i]->mask); 12128 } 12129 kfree(adapter->jump_tables[i]); 12130 } 12131 12132 kfree(adapter->mac_table); 12133 kfree(adapter->rss_key); 12134 bitmap_free(adapter->af_xdp_zc_qps); 12135 disable_dev = !test_and_set_bit(__IXGBE_DISABLED, &adapter->state); 12136 free_netdev(netdev); 12137 12138 if (adapter->hw.mac.type == ixgbe_mac_e610) 12139 mutex_destroy(&adapter->hw.aci.lock); 12140 12141 if (disable_dev) 12142 pci_disable_device(pdev); 12143 12144 devlink_free(adapter->devlink); 12145} 12146 12147/** 12148 * ixgbe_io_error_detected - called when PCI error is detected 12149 * @pdev: Pointer to PCI device 12150 * @state: The current pci connection state 12151 * 12152 * This function is called after a PCI bus error affecting 12153 * this device has been detected. 12154 */ 12155static pci_ers_result_t ixgbe_io_error_detected(struct pci_dev *pdev, 12156 pci_channel_state_t state) 12157{ 12158 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 12159 struct net_device *netdev = adapter->netdev; 12160 12161#ifdef CONFIG_PCI_IOV 12162 struct ixgbe_hw *hw = &adapter->hw; 12163 struct pci_dev *bdev, *vfdev; 12164 u32 dw0, dw1, dw2, dw3; 12165 int vf, pos; 12166 u16 req_id, pf_func; 12167 12168 if (adapter->hw.mac.type == ixgbe_mac_82598EB || 12169 adapter->num_vfs == 0) 12170 goto skip_bad_vf_detection; 12171 12172 bdev = pdev->bus->self; 12173 while (bdev && (pci_pcie_type(bdev) != PCI_EXP_TYPE_ROOT_PORT)) 12174 bdev = bdev->bus->self; 12175 12176 if (!bdev) 12177 goto skip_bad_vf_detection; 12178 12179 pos = pci_find_ext_capability(bdev, PCI_EXT_CAP_ID_ERR); 12180 if (!pos) 12181 goto skip_bad_vf_detection; 12182 12183 dw0 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG); 12184 dw1 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 4); 12185 dw2 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 8); 12186 dw3 = ixgbe_read_pci_cfg_dword(hw, pos + PCI_ERR_HEADER_LOG + 12); 12187 if (ixgbe_removed(hw->hw_addr)) 12188 goto skip_bad_vf_detection; 12189 12190 req_id = dw1 >> 16; 12191 /* On the 82599 if bit 7 of the requestor ID is set then it's a VF */ 12192 if (!(req_id & 0x0080)) 12193 goto skip_bad_vf_detection; 12194 12195 pf_func = req_id & 0x01; 12196 if ((pf_func & 1) == (pdev->devfn & 1)) { 12197 unsigned int device_id; 12198 12199 vf = FIELD_GET(0x7F, req_id); 12200 e_dev_err("VF %d has caused a PCIe error\n", vf); 12201 e_dev_err("TLP: dw0: %8.8x\tdw1: %8.8x\tdw2: " 12202 "%8.8x\tdw3: %8.8x\n", 12203 dw0, dw1, dw2, dw3); 12204 switch (adapter->hw.mac.type) { 12205 case ixgbe_mac_82599EB: 12206 device_id = IXGBE_82599_VF_DEVICE_ID; 12207 break; 12208 case ixgbe_mac_X540: 12209 device_id = IXGBE_X540_VF_DEVICE_ID; 12210 break; 12211 case ixgbe_mac_X550: 12212 device_id = IXGBE_DEV_ID_X550_VF; 12213 break; 12214 case ixgbe_mac_X550EM_x: 12215 device_id = IXGBE_DEV_ID_X550EM_X_VF; 12216 break; 12217 case ixgbe_mac_x550em_a: 12218 device_id = IXGBE_DEV_ID_X550EM_A_VF; 12219 break; 12220 case ixgbe_mac_e610: 12221 device_id = IXGBE_DEV_ID_E610_VF; 12222 break; 12223 default: 12224 device_id = 0; 12225 break; 12226 } 12227 12228 /* Find the pci device of the offending VF */ 12229 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, device_id, NULL); 12230 while (vfdev) { 12231 if (vfdev->devfn == (req_id & 0xFF)) 12232 break; 12233 vfdev = pci_get_device(PCI_VENDOR_ID_INTEL, 12234 device_id, vfdev); 12235 } 12236 /* 12237 * There's a slim chance the VF could have been hot plugged, 12238 * so if it is no longer present we don't need to issue the 12239 * VFLR. Just clean up the AER in that case. 12240 */ 12241 if (vfdev) { 12242 pcie_flr(vfdev); 12243 /* Free device reference count */ 12244 pci_dev_put(vfdev); 12245 } 12246 } 12247 12248 /* 12249 * Even though the error may have occurred on the other port 12250 * we still need to increment the vf error reference count for 12251 * both ports because the I/O resume function will be called 12252 * for both of them. 12253 */ 12254 adapter->vferr_refcount++; 12255 12256 return PCI_ERS_RESULT_RECOVERED; 12257 12258skip_bad_vf_detection: 12259#endif /* CONFIG_PCI_IOV */ 12260 if (!test_bit(__IXGBE_SERVICE_INITED, &adapter->state)) 12261 return PCI_ERS_RESULT_DISCONNECT; 12262 12263 if (!netif_device_present(netdev)) 12264 return PCI_ERS_RESULT_DISCONNECT; 12265 12266 rtnl_lock(); 12267 netif_device_detach(netdev); 12268 12269 if (netif_running(netdev)) 12270 ixgbe_close_suspend(adapter); 12271 12272 if (state == pci_channel_io_perm_failure) { 12273 rtnl_unlock(); 12274 return PCI_ERS_RESULT_DISCONNECT; 12275 } 12276 12277 if (!test_and_set_bit(__IXGBE_DISABLED, &adapter->state)) 12278 pci_disable_device(pdev); 12279 rtnl_unlock(); 12280 12281 /* Request a slot reset. */ 12282 return PCI_ERS_RESULT_NEED_RESET; 12283} 12284 12285/** 12286 * ixgbe_io_slot_reset - called after the pci bus has been reset. 12287 * @pdev: Pointer to PCI device 12288 * 12289 * Restart the card from scratch, as if from a cold-boot. 12290 */ 12291static pci_ers_result_t ixgbe_io_slot_reset(struct pci_dev *pdev) 12292{ 12293 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 12294 pci_ers_result_t result; 12295 12296 if (pci_enable_device_mem(pdev)) { 12297 e_err(probe, "Cannot re-enable PCI device after reset.\n"); 12298 result = PCI_ERS_RESULT_DISCONNECT; 12299 } else { 12300 smp_mb__before_atomic(); 12301 clear_bit(__IXGBE_DISABLED, &adapter->state); 12302 adapter->hw.hw_addr = adapter->io_addr; 12303 pci_set_master(pdev); 12304 pci_restore_state(pdev); 12305 12306 pci_wake_from_d3(pdev, false); 12307 12308 ixgbe_reset(adapter); 12309 IXGBE_WRITE_REG(&adapter->hw, IXGBE_WUS, ~0); 12310 result = PCI_ERS_RESULT_RECOVERED; 12311 } 12312 12313 return result; 12314} 12315 12316/** 12317 * ixgbe_io_resume - called when traffic can start flowing again. 12318 * @pdev: Pointer to PCI device 12319 * 12320 * This callback is called when the error recovery driver tells us that 12321 * its OK to resume normal operation. 12322 */ 12323static void ixgbe_io_resume(struct pci_dev *pdev) 12324{ 12325 struct ixgbe_adapter *adapter = pci_get_drvdata(pdev); 12326 struct net_device *netdev = adapter->netdev; 12327 12328#ifdef CONFIG_PCI_IOV 12329 if (adapter->vferr_refcount) { 12330 e_info(drv, "Resuming after VF err\n"); 12331 adapter->vferr_refcount--; 12332 return; 12333 } 12334 12335#endif 12336 rtnl_lock(); 12337 if (netif_running(netdev)) 12338 ixgbe_open(netdev); 12339 12340 netif_device_attach(netdev); 12341 rtnl_unlock(); 12342} 12343 12344static const struct pci_error_handlers ixgbe_err_handler = { 12345 .error_detected = ixgbe_io_error_detected, 12346 .slot_reset = ixgbe_io_slot_reset, 12347 .resume = ixgbe_io_resume, 12348}; 12349 12350static DEFINE_SIMPLE_DEV_PM_OPS(ixgbe_pm_ops, ixgbe_suspend, ixgbe_resume); 12351 12352static struct pci_driver ixgbe_driver = { 12353 .name = ixgbe_driver_name, 12354 .id_table = ixgbe_pci_tbl, 12355 .probe = ixgbe_probe, 12356 .remove = ixgbe_remove, 12357 .driver.pm = pm_sleep_ptr(&ixgbe_pm_ops), 12358 .shutdown = ixgbe_shutdown, 12359 .sriov_configure = ixgbe_pci_sriov_configure, 12360 .err_handler = &ixgbe_err_handler 12361}; 12362 12363/** 12364 * ixgbe_init_module - Driver Registration Routine 12365 * 12366 * ixgbe_init_module is the first routine called when the driver is 12367 * loaded. All it does is register with the PCI subsystem. 12368 **/ 12369static int __init ixgbe_init_module(void) 12370{ 12371 int ret; 12372 pr_info("%s\n", ixgbe_driver_string); 12373 pr_info("%s\n", ixgbe_copyright); 12374 12375 ixgbe_wq = create_singlethread_workqueue(ixgbe_driver_name); 12376 if (!ixgbe_wq) { 12377 pr_err("%s: Failed to create workqueue\n", ixgbe_driver_name); 12378 return -ENOMEM; 12379 } 12380 12381 ixgbe_dbg_init(); 12382 12383 ret = pci_register_driver(&ixgbe_driver); 12384 if (ret) { 12385 destroy_workqueue(ixgbe_wq); 12386 ixgbe_dbg_exit(); 12387 return ret; 12388 } 12389 12390#ifdef CONFIG_IXGBE_DCA 12391 dca_register_notify(&dca_notifier); 12392#endif 12393 12394 return 0; 12395} 12396 12397module_init(ixgbe_init_module); 12398 12399/** 12400 * ixgbe_exit_module - Driver Exit Cleanup Routine 12401 * 12402 * ixgbe_exit_module is called just before the driver is removed 12403 * from memory. 12404 **/ 12405static void __exit ixgbe_exit_module(void) 12406{ 12407#ifdef CONFIG_IXGBE_DCA 12408 dca_unregister_notify(&dca_notifier); 12409#endif 12410 pci_unregister_driver(&ixgbe_driver); 12411 12412 ixgbe_dbg_exit(); 12413 if (ixgbe_wq) { 12414 destroy_workqueue(ixgbe_wq); 12415 ixgbe_wq = NULL; 12416 } 12417} 12418 12419#ifdef CONFIG_IXGBE_DCA 12420static int ixgbe_notify_dca(struct notifier_block *nb, unsigned long event, 12421 void *p) 12422{ 12423 int ret_val; 12424 12425 ret_val = driver_for_each_device(&ixgbe_driver.driver, NULL, &event, 12426 __ixgbe_notify_dca); 12427 12428 return ret_val ? NOTIFY_BAD : NOTIFY_DONE; 12429} 12430 12431#endif /* CONFIG_IXGBE_DCA */ 12432 12433module_exit(ixgbe_exit_module); 12434 12435/* ixgbe_main.c */
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