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ixgbe_dcb_nl.c
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linux-6.19.14/drivers/net/ethernet/intel/ixgbe/ixgbe_dcb_nl.c
1// SPDX-License-Identifier: GPL-2.0 2/* Copyright(c) 1999 - 2024 Intel Corporation. */ 3 4#include "ixgbe.h" 5#include <linux/dcbnl.h> 6#include "ixgbe_dcb_82598.h" 7#include "ixgbe_dcb_82599.h" 8#include "ixgbe_sriov.h" 9 10/* Callbacks for DCB netlink in the kernel */ 11#define BIT_PFC 0x02 12#define BIT_PG_RX 0x04 13#define BIT_PG_TX 0x08 14#define BIT_APP_UPCHG 0x10 15 16/* Responses for the DCB_C_SET_ALL command */ 17#define DCB_HW_CHG_RST 0 /* DCB configuration changed with reset */ 18#define DCB_NO_HW_CHG 1 /* DCB configuration did not change */ 19#define DCB_HW_CHG 2 /* DCB configuration changed, no reset */ 20 21static int ixgbe_copy_dcb_cfg(struct ixgbe_adapter *adapter, int tc_max) 22{ 23 struct ixgbe_dcb_config *scfg = &adapter->temp_dcb_cfg; 24 struct ixgbe_dcb_config *dcfg = &adapter->dcb_cfg; 25 struct tc_configuration *src = NULL; 26 struct tc_configuration *dst = NULL; 27 int i, j; 28 int tx = DCB_TX_CONFIG; 29 int rx = DCB_RX_CONFIG; 30 int changes = 0; 31#ifdef IXGBE_FCOE 32 struct dcb_app app = { 33 .selector = DCB_APP_IDTYPE_ETHTYPE, 34 .protocol = ETH_P_FCOE, 35 }; 36 u8 up = dcb_getapp(adapter->netdev, &app); 37 38 if (up && !(up & BIT(adapter->fcoe.up))) 39 changes |= BIT_APP_UPCHG; 40#endif 41 42 for (i = DCB_PG_ATTR_TC_0; i < tc_max + DCB_PG_ATTR_TC_0; i++) { 43 src = &scfg->tc_config[i - DCB_PG_ATTR_TC_0]; 44 dst = &dcfg->tc_config[i - DCB_PG_ATTR_TC_0]; 45 46 if (dst->path[tx].prio_type != src->path[tx].prio_type) { 47 dst->path[tx].prio_type = src->path[tx].prio_type; 48 changes |= BIT_PG_TX; 49 } 50 51 if (dst->path[tx].bwg_id != src->path[tx].bwg_id) { 52 dst->path[tx].bwg_id = src->path[tx].bwg_id; 53 changes |= BIT_PG_TX; 54 } 55 56 if (dst->path[tx].bwg_percent != src->path[tx].bwg_percent) { 57 dst->path[tx].bwg_percent = src->path[tx].bwg_percent; 58 changes |= BIT_PG_TX; 59 } 60 61 if (dst->path[tx].up_to_tc_bitmap != 62 src->path[tx].up_to_tc_bitmap) { 63 dst->path[tx].up_to_tc_bitmap = 64 src->path[tx].up_to_tc_bitmap; 65 changes |= (BIT_PG_TX | BIT_PFC | BIT_APP_UPCHG); 66 } 67 68 if (dst->path[rx].prio_type != src->path[rx].prio_type) { 69 dst->path[rx].prio_type = src->path[rx].prio_type; 70 changes |= BIT_PG_RX; 71 } 72 73 if (dst->path[rx].bwg_id != src->path[rx].bwg_id) { 74 dst->path[rx].bwg_id = src->path[rx].bwg_id; 75 changes |= BIT_PG_RX; 76 } 77 78 if (dst->path[rx].bwg_percent != src->path[rx].bwg_percent) { 79 dst->path[rx].bwg_percent = src->path[rx].bwg_percent; 80 changes |= BIT_PG_RX; 81 } 82 83 if (dst->path[rx].up_to_tc_bitmap != 84 src->path[rx].up_to_tc_bitmap) { 85 dst->path[rx].up_to_tc_bitmap = 86 src->path[rx].up_to_tc_bitmap; 87 changes |= (BIT_PG_RX | BIT_PFC | BIT_APP_UPCHG); 88 } 89 } 90 91 for (i = DCB_PG_ATTR_BW_ID_0; i < DCB_PG_ATTR_BW_ID_MAX; i++) { 92 j = i - DCB_PG_ATTR_BW_ID_0; 93 if (dcfg->bw_percentage[tx][j] != scfg->bw_percentage[tx][j]) { 94 dcfg->bw_percentage[tx][j] = scfg->bw_percentage[tx][j]; 95 changes |= BIT_PG_TX; 96 } 97 if (dcfg->bw_percentage[rx][j] != scfg->bw_percentage[rx][j]) { 98 dcfg->bw_percentage[rx][j] = scfg->bw_percentage[rx][j]; 99 changes |= BIT_PG_RX; 100 } 101 } 102 103 for (i = DCB_PFC_UP_ATTR_0; i < DCB_PFC_UP_ATTR_MAX; i++) { 104 j = i - DCB_PFC_UP_ATTR_0; 105 if (dcfg->tc_config[j].dcb_pfc != scfg->tc_config[j].dcb_pfc) { 106 dcfg->tc_config[j].dcb_pfc = scfg->tc_config[j].dcb_pfc; 107 changes |= BIT_PFC; 108 } 109 } 110 111 if (dcfg->pfc_mode_enable != scfg->pfc_mode_enable) { 112 dcfg->pfc_mode_enable = scfg->pfc_mode_enable; 113 changes |= BIT_PFC; 114 } 115 116 return changes; 117} 118 119static u8 ixgbe_dcbnl_get_state(struct net_device *netdev) 120{ 121 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 122 123 return !!(adapter->flags & IXGBE_FLAG_DCB_ENABLED); 124} 125 126static u8 ixgbe_dcbnl_set_state(struct net_device *netdev, u8 state) 127{ 128 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 129 130 /* Fail command if not in CEE mode */ 131 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) 132 return 1; 133 134 /* verify there is something to do, if not then exit */ 135 if (!state == !(adapter->flags & IXGBE_FLAG_DCB_ENABLED)) 136 return 0; 137 138 return !!ixgbe_setup_tc(netdev, 139 state ? adapter->dcb_cfg.num_tcs.pg_tcs : 0); 140} 141 142static void ixgbe_dcbnl_get_perm_hw_addr(struct net_device *netdev, 143 u8 *perm_addr) 144{ 145 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 146 int i, j; 147 148 memset(perm_addr, 0xff, MAX_ADDR_LEN); 149 150 for (i = 0; i < netdev->addr_len; i++) 151 perm_addr[i] = adapter->hw.mac.perm_addr[i]; 152 153 switch (adapter->hw.mac.type) { 154 case ixgbe_mac_82599EB: 155 case ixgbe_mac_X540: 156 case ixgbe_mac_X550: 157 case ixgbe_mac_e610: 158 for (j = 0; j < netdev->addr_len; j++, i++) 159 perm_addr[i] = adapter->hw.mac.san_addr[j]; 160 break; 161 default: 162 break; 163 } 164} 165 166static void ixgbe_dcbnl_set_pg_tc_cfg_tx(struct net_device *netdev, int tc, 167 u8 prio, u8 bwg_id, u8 bw_pct, 168 u8 up_map) 169{ 170 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 171 172 if (prio != DCB_ATTR_VALUE_UNDEFINED) 173 adapter->temp_dcb_cfg.tc_config[tc].path[0].prio_type = prio; 174 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED) 175 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_id = bwg_id; 176 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED) 177 adapter->temp_dcb_cfg.tc_config[tc].path[0].bwg_percent = 178 bw_pct; 179 if (up_map != DCB_ATTR_VALUE_UNDEFINED) 180 adapter->temp_dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap = 181 up_map; 182} 183 184static void ixgbe_dcbnl_set_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id, 185 u8 bw_pct) 186{ 187 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 188 189 adapter->temp_dcb_cfg.bw_percentage[0][bwg_id] = bw_pct; 190} 191 192static void ixgbe_dcbnl_set_pg_tc_cfg_rx(struct net_device *netdev, int tc, 193 u8 prio, u8 bwg_id, u8 bw_pct, 194 u8 up_map) 195{ 196 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 197 198 if (prio != DCB_ATTR_VALUE_UNDEFINED) 199 adapter->temp_dcb_cfg.tc_config[tc].path[1].prio_type = prio; 200 if (bwg_id != DCB_ATTR_VALUE_UNDEFINED) 201 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_id = bwg_id; 202 if (bw_pct != DCB_ATTR_VALUE_UNDEFINED) 203 adapter->temp_dcb_cfg.tc_config[tc].path[1].bwg_percent = 204 bw_pct; 205 if (up_map != DCB_ATTR_VALUE_UNDEFINED) 206 adapter->temp_dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap = 207 up_map; 208} 209 210static void ixgbe_dcbnl_set_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id, 211 u8 bw_pct) 212{ 213 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 214 215 adapter->temp_dcb_cfg.bw_percentage[1][bwg_id] = bw_pct; 216} 217 218static void ixgbe_dcbnl_get_pg_tc_cfg_tx(struct net_device *netdev, int tc, 219 u8 *prio, u8 *bwg_id, u8 *bw_pct, 220 u8 *up_map) 221{ 222 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 223 224 *prio = adapter->dcb_cfg.tc_config[tc].path[0].prio_type; 225 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[0].bwg_id; 226 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[0].bwg_percent; 227 *up_map = adapter->dcb_cfg.tc_config[tc].path[0].up_to_tc_bitmap; 228} 229 230static void ixgbe_dcbnl_get_pg_bwg_cfg_tx(struct net_device *netdev, int bwg_id, 231 u8 *bw_pct) 232{ 233 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 234 235 *bw_pct = adapter->dcb_cfg.bw_percentage[0][bwg_id]; 236} 237 238static void ixgbe_dcbnl_get_pg_tc_cfg_rx(struct net_device *netdev, int tc, 239 u8 *prio, u8 *bwg_id, u8 *bw_pct, 240 u8 *up_map) 241{ 242 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 243 244 *prio = adapter->dcb_cfg.tc_config[tc].path[1].prio_type; 245 *bwg_id = adapter->dcb_cfg.tc_config[tc].path[1].bwg_id; 246 *bw_pct = adapter->dcb_cfg.tc_config[tc].path[1].bwg_percent; 247 *up_map = adapter->dcb_cfg.tc_config[tc].path[1].up_to_tc_bitmap; 248} 249 250static void ixgbe_dcbnl_get_pg_bwg_cfg_rx(struct net_device *netdev, int bwg_id, 251 u8 *bw_pct) 252{ 253 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 254 255 *bw_pct = adapter->dcb_cfg.bw_percentage[1][bwg_id]; 256} 257 258static void ixgbe_dcbnl_set_pfc_cfg(struct net_device *netdev, int priority, 259 u8 setting) 260{ 261 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 262 263 adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc = setting; 264 if (adapter->temp_dcb_cfg.tc_config[priority].dcb_pfc != 265 adapter->dcb_cfg.tc_config[priority].dcb_pfc) 266 adapter->temp_dcb_cfg.pfc_mode_enable = true; 267} 268 269static void ixgbe_dcbnl_get_pfc_cfg(struct net_device *netdev, int priority, 270 u8 *setting) 271{ 272 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 273 274 *setting = adapter->dcb_cfg.tc_config[priority].dcb_pfc; 275} 276 277static void ixgbe_dcbnl_devreset(struct net_device *dev) 278{ 279 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 280 281 while (test_and_set_bit(__IXGBE_RESETTING, &adapter->state)) 282 usleep_range(1000, 2000); 283 284 if (netif_running(dev)) 285 dev->netdev_ops->ndo_stop(dev); 286 287 ixgbe_clear_interrupt_scheme(adapter); 288 ixgbe_init_interrupt_scheme(adapter); 289 290 if (netif_running(dev)) 291 dev->netdev_ops->ndo_open(dev); 292 293 clear_bit(__IXGBE_RESETTING, &adapter->state); 294} 295 296static u8 ixgbe_dcbnl_set_all(struct net_device *netdev) 297{ 298 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 299 struct ixgbe_dcb_config *dcb_cfg = &adapter->dcb_cfg; 300 struct ixgbe_hw *hw = &adapter->hw; 301 int ret = DCB_NO_HW_CHG; 302 int i; 303 304 /* Fail command if not in CEE mode */ 305 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) 306 return DCB_NO_HW_CHG; 307 308 adapter->dcb_set_bitmap |= ixgbe_copy_dcb_cfg(adapter, 309 MAX_TRAFFIC_CLASS); 310 if (!adapter->dcb_set_bitmap) 311 return DCB_NO_HW_CHG; 312 313 if (adapter->dcb_set_bitmap & (BIT_PG_TX|BIT_PG_RX)) { 314 u16 refill[MAX_TRAFFIC_CLASS], max[MAX_TRAFFIC_CLASS]; 315 u8 bwg_id[MAX_TRAFFIC_CLASS], prio_type[MAX_TRAFFIC_CLASS]; 316 /* Priority to TC mapping in CEE case default to 1:1 */ 317 u8 prio_tc[MAX_USER_PRIORITY]; 318 int max_frame = adapter->netdev->mtu + ETH_HLEN + ETH_FCS_LEN; 319 320#ifdef IXGBE_FCOE 321 if (adapter->netdev->fcoe_mtu) 322 max_frame = max(max_frame, IXGBE_FCOE_JUMBO_FRAME_SIZE); 323#endif 324 325 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame, 326 DCB_TX_CONFIG); 327 ixgbe_dcb_calculate_tc_credits(hw, dcb_cfg, max_frame, 328 DCB_RX_CONFIG); 329 330 ixgbe_dcb_unpack_refill(dcb_cfg, DCB_TX_CONFIG, refill); 331 ixgbe_dcb_unpack_max(dcb_cfg, max); 332 ixgbe_dcb_unpack_bwgid(dcb_cfg, DCB_TX_CONFIG, bwg_id); 333 ixgbe_dcb_unpack_prio(dcb_cfg, DCB_TX_CONFIG, prio_type); 334 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc); 335 336 ixgbe_dcb_hw_ets_config(hw, refill, max, bwg_id, 337 prio_type, prio_tc); 338 339 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) 340 netdev_set_prio_tc_map(netdev, i, prio_tc[i]); 341 342 ret = DCB_HW_CHG_RST; 343 } 344 345 if (adapter->dcb_set_bitmap & BIT_PFC) { 346 if (dcb_cfg->pfc_mode_enable) { 347 u8 pfc_en; 348 u8 prio_tc[MAX_USER_PRIORITY]; 349 350 ixgbe_dcb_unpack_map(dcb_cfg, DCB_TX_CONFIG, prio_tc); 351 ixgbe_dcb_unpack_pfc(dcb_cfg, &pfc_en); 352 ixgbe_dcb_hw_pfc_config(hw, pfc_en, prio_tc); 353 } else { 354 hw->mac.ops.fc_enable(hw); 355 } 356 357 ixgbe_set_rx_drop_en(adapter); 358 359 ret = DCB_HW_CHG; 360 } 361 362#ifdef IXGBE_FCOE 363 /* Reprogram FCoE hardware offloads when the traffic class 364 * FCoE is using changes. This happens if the APP info 365 * changes or the up2tc mapping is updated. 366 */ 367 if (adapter->dcb_set_bitmap & BIT_APP_UPCHG) { 368 struct dcb_app app = { 369 .selector = DCB_APP_IDTYPE_ETHTYPE, 370 .protocol = ETH_P_FCOE, 371 }; 372 u8 up = dcb_getapp(netdev, &app); 373 374 adapter->fcoe.up = ffs(up) - 1; 375 ixgbe_dcbnl_devreset(netdev); 376 ret = DCB_HW_CHG_RST; 377 } 378#endif 379 380 adapter->dcb_set_bitmap = 0x00; 381 return ret; 382} 383 384static u8 ixgbe_dcbnl_getcap(struct net_device *netdev, int capid, u8 *cap) 385{ 386 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 387 388 switch (capid) { 389 case DCB_CAP_ATTR_PG: 390 *cap = true; 391 break; 392 case DCB_CAP_ATTR_PFC: 393 *cap = true; 394 break; 395 case DCB_CAP_ATTR_UP2TC: 396 *cap = false; 397 break; 398 case DCB_CAP_ATTR_PG_TCS: 399 *cap = 0x80; 400 break; 401 case DCB_CAP_ATTR_PFC_TCS: 402 *cap = 0x80; 403 break; 404 case DCB_CAP_ATTR_GSP: 405 *cap = true; 406 break; 407 case DCB_CAP_ATTR_BCN: 408 *cap = false; 409 break; 410 case DCB_CAP_ATTR_DCBX: 411 *cap = adapter->dcbx_cap; 412 break; 413 default: 414 *cap = false; 415 break; 416 } 417 418 return 0; 419} 420 421static int ixgbe_dcbnl_getnumtcs(struct net_device *netdev, int tcid, u8 *num) 422{ 423 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 424 425 if (adapter->flags & IXGBE_FLAG_DCB_ENABLED) { 426 switch (tcid) { 427 case DCB_NUMTCS_ATTR_PG: 428 *num = adapter->dcb_cfg.num_tcs.pg_tcs; 429 break; 430 case DCB_NUMTCS_ATTR_PFC: 431 *num = adapter->dcb_cfg.num_tcs.pfc_tcs; 432 break; 433 default: 434 return -EINVAL; 435 } 436 } else { 437 return -EINVAL; 438 } 439 440 return 0; 441} 442 443static int ixgbe_dcbnl_setnumtcs(struct net_device *netdev, int tcid, u8 num) 444{ 445 return -EINVAL; 446} 447 448static u8 ixgbe_dcbnl_getpfcstate(struct net_device *netdev) 449{ 450 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 451 452 return adapter->dcb_cfg.pfc_mode_enable; 453} 454 455static void ixgbe_dcbnl_setpfcstate(struct net_device *netdev, u8 state) 456{ 457 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 458 459 adapter->temp_dcb_cfg.pfc_mode_enable = state; 460} 461 462/** 463 * ixgbe_dcbnl_getapp - retrieve the DCBX application user priority 464 * @netdev : the corresponding netdev 465 * @idtype : identifies the id as ether type or TCP/UDP port number 466 * @id: id is either ether type or TCP/UDP port number 467 * 468 * Returns : on success, returns a non-zero 802.1p user priority bitmap 469 * otherwise returns -EINVAL as the invalid user priority bitmap to indicate an 470 * error. 471 */ 472static int ixgbe_dcbnl_getapp(struct net_device *netdev, u8 idtype, u16 id) 473{ 474 struct ixgbe_adapter *adapter = ixgbe_from_netdev(netdev); 475 struct dcb_app app = { 476 .selector = idtype, 477 .protocol = id, 478 }; 479 480 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_CEE)) 481 return -EINVAL; 482 483 return dcb_getapp(netdev, &app); 484} 485 486static int ixgbe_dcbnl_ieee_getets(struct net_device *dev, 487 struct ieee_ets *ets) 488{ 489 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 490 struct ieee_ets *my_ets = adapter->ixgbe_ieee_ets; 491 492 ets->ets_cap = adapter->dcb_cfg.num_tcs.pg_tcs; 493 494 /* No IEEE PFC settings available */ 495 if (!my_ets) 496 return 0; 497 498 ets->cbs = my_ets->cbs; 499 memcpy(ets->tc_tx_bw, my_ets->tc_tx_bw, sizeof(ets->tc_tx_bw)); 500 memcpy(ets->tc_rx_bw, my_ets->tc_rx_bw, sizeof(ets->tc_rx_bw)); 501 memcpy(ets->tc_tsa, my_ets->tc_tsa, sizeof(ets->tc_tsa)); 502 memcpy(ets->prio_tc, my_ets->prio_tc, sizeof(ets->prio_tc)); 503 return 0; 504} 505 506static int ixgbe_dcbnl_ieee_setets(struct net_device *dev, 507 struct ieee_ets *ets) 508{ 509 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 510 int max_frame = dev->mtu + ETH_HLEN + ETH_FCS_LEN; 511 int i, err; 512 __u8 max_tc = 0; 513 __u8 map_chg = 0; 514 515 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)) 516 return -EINVAL; 517 518 if (!adapter->ixgbe_ieee_ets) { 519 adapter->ixgbe_ieee_ets = kmalloc(sizeof(struct ieee_ets), 520 GFP_KERNEL); 521 if (!adapter->ixgbe_ieee_ets) 522 return -ENOMEM; 523 524 /* initialize UP2TC mappings to invalid value */ 525 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) 526 adapter->ixgbe_ieee_ets->prio_tc[i] = 527 IEEE_8021QAZ_MAX_TCS; 528 /* if possible update UP2TC mappings from HW */ 529 ixgbe_dcb_read_rtrup2tc(&adapter->hw, 530 adapter->ixgbe_ieee_ets->prio_tc); 531 } 532 533 for (i = 0; i < IEEE_8021QAZ_MAX_TCS; i++) { 534 if (ets->prio_tc[i] > max_tc) 535 max_tc = ets->prio_tc[i]; 536 if (ets->prio_tc[i] != adapter->ixgbe_ieee_ets->prio_tc[i]) 537 map_chg = 1; 538 } 539 540 memcpy(adapter->ixgbe_ieee_ets, ets, sizeof(*adapter->ixgbe_ieee_ets)); 541 542 if (max_tc) 543 max_tc++; 544 545 if (max_tc > adapter->dcb_cfg.num_tcs.pg_tcs) 546 return -EINVAL; 547 548 if (max_tc != adapter->hw_tcs) { 549 err = ixgbe_setup_tc(dev, max_tc); 550 if (err) 551 return err; 552 } else if (map_chg) { 553 ixgbe_dcbnl_devreset(dev); 554 } 555 556 return ixgbe_dcb_hw_ets(&adapter->hw, ets, max_frame); 557} 558 559static int ixgbe_dcbnl_ieee_getpfc(struct net_device *dev, 560 struct ieee_pfc *pfc) 561{ 562 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 563 struct ieee_pfc *my_pfc = adapter->ixgbe_ieee_pfc; 564 int i; 565 566 pfc->pfc_cap = adapter->dcb_cfg.num_tcs.pfc_tcs; 567 568 /* No IEEE PFC settings available */ 569 if (!my_pfc) 570 return 0; 571 572 pfc->pfc_en = my_pfc->pfc_en; 573 pfc->mbc = my_pfc->mbc; 574 pfc->delay = my_pfc->delay; 575 576 for (i = 0; i < MAX_TRAFFIC_CLASS; i++) { 577 pfc->requests[i] = adapter->stats.pxoffrxc[i]; 578 pfc->indications[i] = adapter->stats.pxofftxc[i]; 579 } 580 581 return 0; 582} 583 584static int ixgbe_dcbnl_ieee_setpfc(struct net_device *dev, 585 struct ieee_pfc *pfc) 586{ 587 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 588 struct ixgbe_hw *hw = &adapter->hw; 589 u8 *prio_tc; 590 int err; 591 592 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)) 593 return -EINVAL; 594 595 if (!adapter->ixgbe_ieee_pfc) { 596 adapter->ixgbe_ieee_pfc = kmalloc(sizeof(struct ieee_pfc), 597 GFP_KERNEL); 598 if (!adapter->ixgbe_ieee_pfc) 599 return -ENOMEM; 600 } 601 602 prio_tc = adapter->ixgbe_ieee_ets->prio_tc; 603 memcpy(adapter->ixgbe_ieee_pfc, pfc, sizeof(*adapter->ixgbe_ieee_pfc)); 604 605 /* Enable link flow control parameters if PFC is disabled */ 606 if (pfc->pfc_en) 607 err = ixgbe_dcb_hw_pfc_config(hw, pfc->pfc_en, prio_tc); 608 else 609 err = hw->mac.ops.fc_enable(hw); 610 611 ixgbe_set_rx_drop_en(adapter); 612 613 return err; 614} 615 616static int ixgbe_dcbnl_ieee_setapp(struct net_device *dev, 617 struct dcb_app *app) 618{ 619 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 620 int err; 621 622 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)) 623 return -EINVAL; 624 625 err = dcb_ieee_setapp(dev, app); 626 if (err) 627 return err; 628 629#ifdef IXGBE_FCOE 630 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE && 631 app->protocol == ETH_P_FCOE) { 632 u8 app_mask = dcb_ieee_getapp_mask(dev, app); 633 634 if (app_mask & BIT(adapter->fcoe.up)) 635 return 0; 636 637 adapter->fcoe.up = app->priority; 638 ixgbe_dcbnl_devreset(dev); 639 } 640#endif 641 642 /* VF devices should use default UP when available */ 643 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE && 644 app->protocol == 0) { 645 int vf; 646 647 adapter->default_up = app->priority; 648 649 for (vf = 0; vf < adapter->num_vfs; vf++) { 650 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 651 652 if (!vfinfo->pf_qos) 653 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 654 app->priority, vf); 655 } 656 } 657 658 return 0; 659} 660 661static int ixgbe_dcbnl_ieee_delapp(struct net_device *dev, 662 struct dcb_app *app) 663{ 664 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 665 int err; 666 667 if (!(adapter->dcbx_cap & DCB_CAP_DCBX_VER_IEEE)) 668 return -EINVAL; 669 670 err = dcb_ieee_delapp(dev, app); 671 672#ifdef IXGBE_FCOE 673 if (!err && app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE && 674 app->protocol == ETH_P_FCOE) { 675 u8 app_mask = dcb_ieee_getapp_mask(dev, app); 676 677 if (app_mask & BIT(adapter->fcoe.up)) 678 return 0; 679 680 adapter->fcoe.up = app_mask ? 681 ffs(app_mask) - 1 : IXGBE_FCOE_DEFTC; 682 ixgbe_dcbnl_devreset(dev); 683 } 684#endif 685 /* IF default priority is being removed clear VF default UP */ 686 if (app->selector == IEEE_8021QAZ_APP_SEL_ETHERTYPE && 687 app->protocol == 0 && adapter->default_up == app->priority) { 688 int vf; 689 long unsigned int app_mask = dcb_ieee_getapp_mask(dev, app); 690 int qos = app_mask ? find_first_bit(&app_mask, 8) : 0; 691 692 adapter->default_up = qos; 693 694 for (vf = 0; vf < adapter->num_vfs; vf++) { 695 struct vf_data_storage *vfinfo = &adapter->vfinfo[vf]; 696 697 if (!vfinfo->pf_qos) 698 ixgbe_set_vmvir(adapter, vfinfo->pf_vlan, 699 qos, vf); 700 } 701 } 702 703 return err; 704} 705 706static u8 ixgbe_dcbnl_getdcbx(struct net_device *dev) 707{ 708 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 709 return adapter->dcbx_cap; 710} 711 712static u8 ixgbe_dcbnl_setdcbx(struct net_device *dev, u8 mode) 713{ 714 struct ixgbe_adapter *adapter = ixgbe_from_netdev(dev); 715 struct ieee_ets ets = {0}; 716 struct ieee_pfc pfc = {0}; 717 int err = 0; 718 719 /* no support for LLD_MANAGED modes or CEE+IEEE */ 720 if ((mode & DCB_CAP_DCBX_LLD_MANAGED) || 721 ((mode & DCB_CAP_DCBX_VER_IEEE) && (mode & DCB_CAP_DCBX_VER_CEE)) || 722 !(mode & DCB_CAP_DCBX_HOST)) 723 return 1; 724 725 if (mode == adapter->dcbx_cap) 726 return 0; 727 728 adapter->dcbx_cap = mode; 729 730 /* ETS and PFC defaults */ 731 ets.ets_cap = 8; 732 pfc.pfc_cap = 8; 733 734 if (mode & DCB_CAP_DCBX_VER_IEEE) { 735 ixgbe_dcbnl_ieee_setets(dev, &ets); 736 ixgbe_dcbnl_ieee_setpfc(dev, &pfc); 737 } else if (mode & DCB_CAP_DCBX_VER_CEE) { 738 u8 mask = BIT_PFC | BIT_PG_TX | BIT_PG_RX | BIT_APP_UPCHG; 739 740 adapter->dcb_set_bitmap |= mask; 741 ixgbe_dcbnl_set_all(dev); 742 } else { 743 /* Drop into single TC mode strict priority as this 744 * indicates CEE and IEEE versions are disabled 745 */ 746 ixgbe_dcbnl_ieee_setets(dev, &ets); 747 ixgbe_dcbnl_ieee_setpfc(dev, &pfc); 748 err = ixgbe_setup_tc(dev, 0); 749 } 750 751 return err ? 1 : 0; 752} 753 754const struct dcbnl_rtnl_ops ixgbe_dcbnl_ops = { 755 .ieee_getets = ixgbe_dcbnl_ieee_getets, 756 .ieee_setets = ixgbe_dcbnl_ieee_setets, 757 .ieee_getpfc = ixgbe_dcbnl_ieee_getpfc, 758 .ieee_setpfc = ixgbe_dcbnl_ieee_setpfc, 759 .ieee_setapp = ixgbe_dcbnl_ieee_setapp, 760 .ieee_delapp = ixgbe_dcbnl_ieee_delapp, 761 .getstate = ixgbe_dcbnl_get_state, 762 .setstate = ixgbe_dcbnl_set_state, 763 .getpermhwaddr = ixgbe_dcbnl_get_perm_hw_addr, 764 .setpgtccfgtx = ixgbe_dcbnl_set_pg_tc_cfg_tx, 765 .setpgbwgcfgtx = ixgbe_dcbnl_set_pg_bwg_cfg_tx, 766 .setpgtccfgrx = ixgbe_dcbnl_set_pg_tc_cfg_rx, 767 .setpgbwgcfgrx = ixgbe_dcbnl_set_pg_bwg_cfg_rx, 768 .getpgtccfgtx = ixgbe_dcbnl_get_pg_tc_cfg_tx, 769 .getpgbwgcfgtx = ixgbe_dcbnl_get_pg_bwg_cfg_tx, 770 .getpgtccfgrx = ixgbe_dcbnl_get_pg_tc_cfg_rx, 771 .getpgbwgcfgrx = ixgbe_dcbnl_get_pg_bwg_cfg_rx, 772 .setpfccfg = ixgbe_dcbnl_set_pfc_cfg, 773 .getpfccfg = ixgbe_dcbnl_get_pfc_cfg, 774 .setall = ixgbe_dcbnl_set_all, 775 .getcap = ixgbe_dcbnl_getcap, 776 .getnumtcs = ixgbe_dcbnl_getnumtcs, 777 .setnumtcs = ixgbe_dcbnl_setnumtcs, 778 .getpfcstate = ixgbe_dcbnl_getpfcstate, 779 .setpfcstate = ixgbe_dcbnl_setpfcstate, 780 .getapp = ixgbe_dcbnl_getapp, 781 .getdcbx = ixgbe_dcbnl_getdcbx, 782 .setdcbx = ixgbe_dcbnl_setdcbx, 783};
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