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nldev.c
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linux-6.19.14/drivers/infiniband/core/nldev.c
1/* 2 * Copyright (c) 2017 Mellanox Technologies. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. Neither the names of the copyright holders nor the names of its 13 * contributors may be used to endorse or promote products derived from 14 * this software without specific prior written permission. 15 * 16 * Alternatively, this software may be distributed under the terms of the 17 * GNU General Public License ("GPL") version 2 as published by the Free 18 * Software Foundation. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 30 * POSSIBILITY OF SUCH DAMAGE. 31 */ 32 33#include <linux/module.h> 34#include <linux/pid.h> 35#include <linux/pid_namespace.h> 36#include <linux/mutex.h> 37#include <net/netlink.h> 38#include <rdma/rdma_cm.h> 39#include <rdma/rdma_netlink.h> 40 41#include "core_priv.h" 42#include "cma_priv.h" 43#include "restrack.h" 44#include "uverbs.h" 45 46/* 47 * This determines whether a non-privileged user is allowed to specify a 48 * controlled QKEY or not, when true non-privileged user is allowed to specify 49 * a controlled QKEY. 50 */ 51static bool privileged_qkey; 52 53typedef int (*res_fill_func_t)(struct sk_buff*, bool, 54 struct rdma_restrack_entry*, uint32_t); 55 56/* 57 * Sort array elements by the netlink attribute name 58 */ 59static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = { 60 [RDMA_NLDEV_ATTR_CHARDEV] = { .type = NLA_U64 }, 61 [RDMA_NLDEV_ATTR_CHARDEV_ABI] = { .type = NLA_U64 }, 62 [RDMA_NLDEV_ATTR_CHARDEV_NAME] = { .type = NLA_NUL_STRING, 63 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 64 [RDMA_NLDEV_ATTR_CHARDEV_TYPE] = { .type = NLA_NUL_STRING, 65 .len = RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE }, 66 [RDMA_NLDEV_ATTR_DEV_DIM] = { .type = NLA_U8 }, 67 [RDMA_NLDEV_ATTR_DEV_INDEX] = { .type = NLA_U32 }, 68 [RDMA_NLDEV_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, 69 .len = IB_DEVICE_NAME_MAX }, 70 [RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 }, 71 [RDMA_NLDEV_ATTR_DEV_PROTOCOL] = { .type = NLA_NUL_STRING, 72 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 73 [RDMA_NLDEV_ATTR_DRIVER] = { .type = NLA_NESTED }, 74 [RDMA_NLDEV_ATTR_DRIVER_ENTRY] = { .type = NLA_NESTED }, 75 [RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE] = { .type = NLA_U8 }, 76 [RDMA_NLDEV_ATTR_DRIVER_STRING] = { .type = NLA_NUL_STRING, 77 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 78 [RDMA_NLDEV_ATTR_DRIVER_S32] = { .type = NLA_S32 }, 79 [RDMA_NLDEV_ATTR_DRIVER_S64] = { .type = NLA_S64 }, 80 [RDMA_NLDEV_ATTR_DRIVER_U32] = { .type = NLA_U32 }, 81 [RDMA_NLDEV_ATTR_DRIVER_U64] = { .type = NLA_U64 }, 82 [RDMA_NLDEV_ATTR_FW_VERSION] = { .type = NLA_NUL_STRING, 83 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 84 [RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 }, 85 [RDMA_NLDEV_ATTR_LINK_TYPE] = { .type = NLA_NUL_STRING, 86 .len = IFNAMSIZ }, 87 [RDMA_NLDEV_ATTR_LMC] = { .type = NLA_U8 }, 88 [RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 }, 89 [RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING, 90 .len = IFNAMSIZ }, 91 [RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 }, 92 [RDMA_NLDEV_ATTR_PORT_INDEX] = { .type = NLA_U32 }, 93 [RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 }, 94 [RDMA_NLDEV_ATTR_PORT_STATE] = { .type = NLA_U8 }, 95 [RDMA_NLDEV_ATTR_RES_CM_ID] = { .type = NLA_NESTED }, 96 [RDMA_NLDEV_ATTR_RES_CM_IDN] = { .type = NLA_U32 }, 97 [RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY] = { .type = NLA_NESTED }, 98 [RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED }, 99 [RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 }, 100 [RDMA_NLDEV_ATTR_RES_CQN] = { .type = NLA_U32 }, 101 [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED }, 102 [RDMA_NLDEV_ATTR_RES_CTX] = { .type = NLA_NESTED }, 103 [RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 }, 104 [RDMA_NLDEV_ATTR_RES_CTX_ENTRY] = { .type = NLA_NESTED }, 105 [RDMA_NLDEV_ATTR_RES_DST_ADDR] = { 106 .len = sizeof(struct __kernel_sockaddr_storage) }, 107 [RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 }, 108 [RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING, 109 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 110 [RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 }, 111 [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 }, 112 [RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 }, 113 [RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED }, 114 [RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 }, 115 [RDMA_NLDEV_ATTR_RES_MRN] = { .type = NLA_U32 }, 116 [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED }, 117 [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 }, 118 [RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED }, 119 [RDMA_NLDEV_ATTR_RES_PDN] = { .type = NLA_U32 }, 120 [RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED }, 121 [RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 }, 122 [RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 }, 123 [RDMA_NLDEV_ATTR_RES_PS] = { .type = NLA_U32 }, 124 [RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED }, 125 [RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED }, 126 [RDMA_NLDEV_ATTR_RES_RAW] = { .type = NLA_BINARY }, 127 [RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 }, 128 [RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 }, 129 [RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 }, 130 [RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 }, 131 [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = { 132 .len = sizeof(struct __kernel_sockaddr_storage) }, 133 [RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 }, 134 [RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED }, 135 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED }, 136 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]= { .type = NLA_U64 }, 137 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING, 138 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 139 [RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 }, 140 [RDMA_NLDEV_ATTR_RES_SUBTYPE] = { .type = NLA_NUL_STRING, 141 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 142 [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 }, 143 [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 }, 144 [RDMA_NLDEV_ATTR_RES_SRQ] = { .type = NLA_NESTED }, 145 [RDMA_NLDEV_ATTR_RES_SRQN] = { .type = NLA_U32 }, 146 [RDMA_NLDEV_ATTR_RES_SRQ_ENTRY] = { .type = NLA_NESTED }, 147 [RDMA_NLDEV_ATTR_MIN_RANGE] = { .type = NLA_U32 }, 148 [RDMA_NLDEV_ATTR_MAX_RANGE] = { .type = NLA_U32 }, 149 [RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 }, 150 [RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 }, 151 [RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 }, 152 [RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 }, 153 [RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 }, 154 [RDMA_NLDEV_ATTR_STAT_COUNTER] = { .type = NLA_NESTED }, 155 [RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = { .type = NLA_NESTED }, 156 [RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = { .type = NLA_U32 }, 157 [RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = { .type = NLA_NESTED }, 158 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = { .type = NLA_NESTED }, 159 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = { .type = NLA_NUL_STRING }, 160 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = { .type = NLA_U64 }, 161 [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 }, 162 [RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 }, 163 [RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 }, 164 [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 }, 165 [RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK] = { .type = NLA_U8 }, 166 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX] = { .type = NLA_U32 }, 167 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC] = { .type = NLA_U8 }, 168 [RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE] = { .type = NLA_U8 }, 169 [RDMA_NLDEV_ATTR_DRIVER_DETAILS] = { .type = NLA_U8 }, 170 [RDMA_NLDEV_ATTR_DEV_TYPE] = { .type = NLA_U8 }, 171 [RDMA_NLDEV_ATTR_PARENT_NAME] = { .type = NLA_NUL_STRING }, 172 [RDMA_NLDEV_ATTR_NAME_ASSIGN_TYPE] = { .type = NLA_U8 }, 173 [RDMA_NLDEV_ATTR_EVENT_TYPE] = { .type = NLA_U8 }, 174 [RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENABLED] = { .type = NLA_U8 }, 175}; 176 177static int put_driver_name_print_type(struct sk_buff *msg, const char *name, 178 enum rdma_nldev_print_type print_type) 179{ 180 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name)) 181 return -EMSGSIZE; 182 if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC && 183 nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type)) 184 return -EMSGSIZE; 185 186 return 0; 187} 188 189static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, 190 enum rdma_nldev_print_type print_type, 191 u32 value) 192{ 193 if (put_driver_name_print_type(msg, name, print_type)) 194 return -EMSGSIZE; 195 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value)) 196 return -EMSGSIZE; 197 198 return 0; 199} 200 201static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, 202 enum rdma_nldev_print_type print_type, 203 u64 value) 204{ 205 if (put_driver_name_print_type(msg, name, print_type)) 206 return -EMSGSIZE; 207 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value, 208 RDMA_NLDEV_ATTR_PAD)) 209 return -EMSGSIZE; 210 211 return 0; 212} 213 214int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name, 215 const char *str) 216{ 217 if (put_driver_name_print_type(msg, name, 218 RDMA_NLDEV_PRINT_TYPE_UNSPEC)) 219 return -EMSGSIZE; 220 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, str)) 221 return -EMSGSIZE; 222 223 return 0; 224} 225EXPORT_SYMBOL(rdma_nl_put_driver_string); 226 227int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value) 228{ 229 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC, 230 value); 231} 232EXPORT_SYMBOL(rdma_nl_put_driver_u32); 233 234int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name, 235 u32 value) 236{ 237 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX, 238 value); 239} 240EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex); 241 242int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value) 243{ 244 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC, 245 value); 246} 247EXPORT_SYMBOL(rdma_nl_put_driver_u64); 248 249int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value) 250{ 251 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX, 252 value); 253} 254EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex); 255 256bool rdma_nl_get_privileged_qkey(void) 257{ 258 return privileged_qkey; 259} 260EXPORT_SYMBOL(rdma_nl_get_privileged_qkey); 261 262static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device) 263{ 264 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index)) 265 return -EMSGSIZE; 266 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, 267 dev_name(&device->dev))) 268 return -EMSGSIZE; 269 270 return 0; 271} 272 273static int fill_dev_info(struct sk_buff *msg, struct ib_device *device) 274{ 275 char fw[IB_FW_VERSION_NAME_MAX]; 276 int ret = 0; 277 u32 port; 278 279 if (fill_nldev_handle(msg, device)) 280 return -EMSGSIZE; 281 282 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device))) 283 return -EMSGSIZE; 284 285 BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64)); 286 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, 287 device->attrs.device_cap_flags, 288 RDMA_NLDEV_ATTR_PAD)) 289 return -EMSGSIZE; 290 291 ib_get_device_fw_str(device, fw); 292 /* Device without FW has strlen(fw) = 0 */ 293 if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw)) 294 return -EMSGSIZE; 295 296 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID, 297 be64_to_cpu(device->node_guid), 298 RDMA_NLDEV_ATTR_PAD)) 299 return -EMSGSIZE; 300 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID, 301 be64_to_cpu(device->attrs.sys_image_guid), 302 RDMA_NLDEV_ATTR_PAD)) 303 return -EMSGSIZE; 304 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type)) 305 return -EMSGSIZE; 306 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, device->use_cq_dim)) 307 return -EMSGSIZE; 308 309 if (device->type && 310 nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_TYPE, device->type)) 311 return -EMSGSIZE; 312 313 if (device->parent && 314 nla_put_string(msg, RDMA_NLDEV_ATTR_PARENT_NAME, 315 dev_name(&device->parent->dev))) 316 return -EMSGSIZE; 317 318 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_NAME_ASSIGN_TYPE, 319 device->name_assign_type)) 320 return -EMSGSIZE; 321 322 /* 323 * Link type is determined on first port and mlx4 device 324 * which can potentially have two different link type for the same 325 * IB device is considered as better to be avoided in the future, 326 */ 327 port = rdma_start_port(device); 328 if (rdma_cap_opa_mad(device, port)) 329 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "opa"); 330 else if (rdma_protocol_ib(device, port)) 331 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "ib"); 332 else if (rdma_protocol_iwarp(device, port)) 333 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "iw"); 334 else if (rdma_protocol_roce(device, port)) 335 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "roce"); 336 else if (rdma_protocol_usnic(device, port)) 337 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, 338 "usnic"); 339 return ret; 340} 341 342static int fill_port_info(struct sk_buff *msg, 343 struct ib_device *device, u32 port, 344 const struct net *net) 345{ 346 struct net_device *netdev = NULL; 347 struct ib_port_attr attr; 348 int ret; 349 u64 cap_flags = 0; 350 351 if (fill_nldev_handle(msg, device)) 352 return -EMSGSIZE; 353 354 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) 355 return -EMSGSIZE; 356 357 ret = ib_query_port(device, port, &attr); 358 if (ret) 359 return ret; 360 361 if (rdma_protocol_ib(device, port)) { 362 BUILD_BUG_ON((sizeof(attr.port_cap_flags) + 363 sizeof(attr.port_cap_flags2)) > sizeof(u64)); 364 cap_flags = attr.port_cap_flags | 365 ((u64)attr.port_cap_flags2 << 32); 366 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, 367 cap_flags, RDMA_NLDEV_ATTR_PAD)) 368 return -EMSGSIZE; 369 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX, 370 attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD)) 371 return -EMSGSIZE; 372 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid)) 373 return -EMSGSIZE; 374 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid)) 375 return -EMSGSIZE; 376 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc)) 377 return -EMSGSIZE; 378 } 379 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state)) 380 return -EMSGSIZE; 381 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state)) 382 return -EMSGSIZE; 383 384 netdev = ib_device_get_netdev(device, port); 385 if (netdev && net_eq(dev_net(netdev), net)) { 386 ret = nla_put_u32(msg, 387 RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex); 388 if (ret) 389 goto out; 390 ret = nla_put_string(msg, 391 RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name); 392 } 393 394out: 395 dev_put(netdev); 396 return ret; 397} 398 399static int fill_res_info_entry(struct sk_buff *msg, 400 const char *name, u64 curr) 401{ 402 struct nlattr *entry_attr; 403 404 entry_attr = nla_nest_start_noflag(msg, 405 RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY); 406 if (!entry_attr) 407 return -EMSGSIZE; 408 409 if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name)) 410 goto err; 411 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr, 412 RDMA_NLDEV_ATTR_PAD)) 413 goto err; 414 415 nla_nest_end(msg, entry_attr); 416 return 0; 417 418err: 419 nla_nest_cancel(msg, entry_attr); 420 return -EMSGSIZE; 421} 422 423static int fill_res_info(struct sk_buff *msg, struct ib_device *device, 424 bool show_details) 425{ 426 static const char * const names[RDMA_RESTRACK_MAX] = { 427 [RDMA_RESTRACK_PD] = "pd", 428 [RDMA_RESTRACK_CQ] = "cq", 429 [RDMA_RESTRACK_QP] = "qp", 430 [RDMA_RESTRACK_CM_ID] = "cm_id", 431 [RDMA_RESTRACK_MR] = "mr", 432 [RDMA_RESTRACK_CTX] = "ctx", 433 [RDMA_RESTRACK_SRQ] = "srq", 434 }; 435 436 struct nlattr *table_attr; 437 int ret, i, curr; 438 439 if (fill_nldev_handle(msg, device)) 440 return -EMSGSIZE; 441 442 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_RES_SUMMARY); 443 if (!table_attr) 444 return -EMSGSIZE; 445 446 for (i = 0; i < RDMA_RESTRACK_MAX; i++) { 447 if (!names[i]) 448 continue; 449 curr = rdma_restrack_count(device, i, show_details); 450 ret = fill_res_info_entry(msg, names[i], curr); 451 if (ret) 452 goto err; 453 } 454 455 nla_nest_end(msg, table_attr); 456 return 0; 457 458err: 459 nla_nest_cancel(msg, table_attr); 460 return ret; 461} 462 463static int fill_res_name_pid(struct sk_buff *msg, 464 struct rdma_restrack_entry *res) 465{ 466 int err = 0; 467 468 /* 469 * For user resources, user is should read /proc/PID/comm to get the 470 * name of the task file. 471 */ 472 if (rdma_is_kernel_res(res)) { 473 err = nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME, 474 res->kern_name); 475 } else { 476 pid_t pid; 477 478 pid = task_pid_vnr(res->task); 479 /* 480 * Task is dead and in zombie state. 481 * There is no need to print PID anymore. 482 */ 483 if (pid) 484 /* 485 * This part is racy, task can be killed and PID will 486 * be zero right here but it is ok, next query won't 487 * return PID. We don't promise real-time reflection 488 * of SW objects. 489 */ 490 err = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID, pid); 491 } 492 493 return err ? -EMSGSIZE : 0; 494} 495 496static int fill_res_qp_entry_query(struct sk_buff *msg, 497 struct rdma_restrack_entry *res, 498 struct ib_device *dev, 499 struct ib_qp *qp) 500{ 501 struct ib_qp_init_attr qp_init_attr; 502 struct ib_qp_attr qp_attr; 503 int ret; 504 505 ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr); 506 if (ret) 507 return ret; 508 509 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) { 510 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN, 511 qp_attr.dest_qp_num)) 512 goto err; 513 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN, 514 qp_attr.rq_psn)) 515 goto err; 516 } 517 518 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn)) 519 goto err; 520 521 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC || 522 qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) { 523 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE, 524 qp_attr.path_mig_state)) 525 goto err; 526 } 527 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type)) 528 goto err; 529 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state)) 530 goto err; 531 532 if (dev->ops.fill_res_qp_entry) 533 return dev->ops.fill_res_qp_entry(msg, qp); 534 return 0; 535 536err: return -EMSGSIZE; 537} 538 539static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin, 540 struct rdma_restrack_entry *res, uint32_t port) 541{ 542 struct ib_qp *qp = container_of(res, struct ib_qp, res); 543 struct ib_device *dev = qp->device; 544 int ret; 545 546 if (port && port != qp->port) 547 return -EAGAIN; 548 549 /* In create_qp() port is not set yet */ 550 if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port)) 551 return -EMSGSIZE; 552 553 ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num); 554 if (ret) 555 return -EMSGSIZE; 556 557 if (!rdma_is_kernel_res(res) && 558 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id)) 559 return -EMSGSIZE; 560 561 ret = fill_res_name_pid(msg, res); 562 if (ret) 563 return -EMSGSIZE; 564 565 return fill_res_qp_entry_query(msg, res, dev, qp); 566} 567 568static int fill_res_qp_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 569 struct rdma_restrack_entry *res, uint32_t port) 570{ 571 struct ib_qp *qp = container_of(res, struct ib_qp, res); 572 struct ib_device *dev = qp->device; 573 574 if (port && port != qp->port) 575 return -EAGAIN; 576 if (!dev->ops.fill_res_qp_entry_raw) 577 return -EINVAL; 578 return dev->ops.fill_res_qp_entry_raw(msg, qp); 579} 580 581static int fill_res_cm_id_entry(struct sk_buff *msg, bool has_cap_net_admin, 582 struct rdma_restrack_entry *res, uint32_t port) 583{ 584 struct rdma_id_private *id_priv = 585 container_of(res, struct rdma_id_private, res); 586 struct ib_device *dev = id_priv->id.device; 587 struct rdma_cm_id *cm_id = &id_priv->id; 588 589 if (port && port != cm_id->port_num) 590 return -EAGAIN; 591 592 if (cm_id->port_num && 593 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num)) 594 goto err; 595 596 if (id_priv->qp_num) { 597 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num)) 598 goto err; 599 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type)) 600 goto err; 601 } 602 603 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps)) 604 goto err; 605 606 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state)) 607 goto err; 608 609 if (cm_id->route.addr.src_addr.ss_family && 610 nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR, 611 sizeof(cm_id->route.addr.src_addr), 612 &cm_id->route.addr.src_addr)) 613 goto err; 614 if (cm_id->route.addr.dst_addr.ss_family && 615 nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR, 616 sizeof(cm_id->route.addr.dst_addr), 617 &cm_id->route.addr.dst_addr)) 618 goto err; 619 620 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CM_IDN, res->id)) 621 goto err; 622 623 if (fill_res_name_pid(msg, res)) 624 goto err; 625 626 if (dev->ops.fill_res_cm_id_entry) 627 return dev->ops.fill_res_cm_id_entry(msg, cm_id); 628 return 0; 629 630err: return -EMSGSIZE; 631} 632 633static int fill_res_cq_entry(struct sk_buff *msg, bool has_cap_net_admin, 634 struct rdma_restrack_entry *res, uint32_t port) 635{ 636 struct ib_cq *cq = container_of(res, struct ib_cq, res); 637 struct ib_device *dev = cq->device; 638 639 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe)) 640 return -EMSGSIZE; 641 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, 642 atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD)) 643 return -EMSGSIZE; 644 645 /* Poll context is only valid for kernel CQs */ 646 if (rdma_is_kernel_res(res) && 647 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx)) 648 return -EMSGSIZE; 649 650 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL))) 651 return -EMSGSIZE; 652 653 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id)) 654 return -EMSGSIZE; 655 if (!rdma_is_kernel_res(res) && 656 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, 657 cq->uobject->uevent.uobject.context->res.id)) 658 return -EMSGSIZE; 659 660 if (fill_res_name_pid(msg, res)) 661 return -EMSGSIZE; 662 663 return (dev->ops.fill_res_cq_entry) ? 664 dev->ops.fill_res_cq_entry(msg, cq) : 0; 665} 666 667static int fill_res_cq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 668 struct rdma_restrack_entry *res, uint32_t port) 669{ 670 struct ib_cq *cq = container_of(res, struct ib_cq, res); 671 struct ib_device *dev = cq->device; 672 673 if (!dev->ops.fill_res_cq_entry_raw) 674 return -EINVAL; 675 return dev->ops.fill_res_cq_entry_raw(msg, cq); 676} 677 678static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin, 679 struct rdma_restrack_entry *res, uint32_t port) 680{ 681 struct ib_mr *mr = container_of(res, struct ib_mr, res); 682 struct ib_device *dev = mr->pd->device; 683 684 if (has_cap_net_admin) { 685 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey)) 686 return -EMSGSIZE; 687 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey)) 688 return -EMSGSIZE; 689 } 690 691 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length, 692 RDMA_NLDEV_ATTR_PAD)) 693 return -EMSGSIZE; 694 695 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) 696 return -EMSGSIZE; 697 698 if (!rdma_is_kernel_res(res) && 699 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id)) 700 return -EMSGSIZE; 701 702 if (fill_res_name_pid(msg, res)) 703 return -EMSGSIZE; 704 705 return (dev->ops.fill_res_mr_entry) ? 706 dev->ops.fill_res_mr_entry(msg, mr) : 707 0; 708} 709 710static int fill_res_mr_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 711 struct rdma_restrack_entry *res, uint32_t port) 712{ 713 struct ib_mr *mr = container_of(res, struct ib_mr, res); 714 struct ib_device *dev = mr->pd->device; 715 716 if (!dev->ops.fill_res_mr_entry_raw) 717 return -EINVAL; 718 return dev->ops.fill_res_mr_entry_raw(msg, mr); 719} 720 721static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin, 722 struct rdma_restrack_entry *res, uint32_t port) 723{ 724 struct ib_pd *pd = container_of(res, struct ib_pd, res); 725 726 if (has_cap_net_admin) { 727 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY, 728 pd->local_dma_lkey)) 729 goto err; 730 if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) && 731 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY, 732 pd->unsafe_global_rkey)) 733 goto err; 734 } 735 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, 736 atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD)) 737 goto err; 738 739 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, res->id)) 740 goto err; 741 742 if (!rdma_is_kernel_res(res) && 743 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, 744 pd->uobject->context->res.id)) 745 goto err; 746 747 return fill_res_name_pid(msg, res); 748 749err: return -EMSGSIZE; 750} 751 752static int fill_res_ctx_entry(struct sk_buff *msg, bool has_cap_net_admin, 753 struct rdma_restrack_entry *res, uint32_t port) 754{ 755 struct ib_ucontext *ctx = container_of(res, struct ib_ucontext, res); 756 757 if (rdma_is_kernel_res(res)) 758 return 0; 759 760 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, ctx->res.id)) 761 return -EMSGSIZE; 762 763 return fill_res_name_pid(msg, res); 764} 765 766static int fill_res_range_qp_entry(struct sk_buff *msg, uint32_t min_range, 767 uint32_t max_range) 768{ 769 struct nlattr *entry_attr; 770 771 if (!min_range) 772 return 0; 773 774 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY); 775 if (!entry_attr) 776 return -EMSGSIZE; 777 778 if (min_range == max_range) { 779 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, min_range)) 780 goto err; 781 } else { 782 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MIN_RANGE, min_range)) 783 goto err; 784 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MAX_RANGE, max_range)) 785 goto err; 786 } 787 nla_nest_end(msg, entry_attr); 788 return 0; 789 790err: 791 nla_nest_cancel(msg, entry_attr); 792 return -EMSGSIZE; 793} 794 795static int fill_res_srq_qps(struct sk_buff *msg, struct ib_srq *srq) 796{ 797 uint32_t min_range = 0, prev = 0; 798 struct rdma_restrack_entry *res; 799 struct rdma_restrack_root *rt; 800 struct nlattr *table_attr; 801 struct ib_qp *qp = NULL; 802 unsigned long id = 0; 803 804 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP); 805 if (!table_attr) 806 return -EMSGSIZE; 807 808 rt = &srq->device->res[RDMA_RESTRACK_QP]; 809 xa_lock(&rt->xa); 810 xa_for_each(&rt->xa, id, res) { 811 if (!rdma_restrack_get(res)) 812 continue; 813 814 qp = container_of(res, struct ib_qp, res); 815 if (!qp->srq || (qp->srq->res.id != srq->res.id)) { 816 rdma_restrack_put(res); 817 continue; 818 } 819 820 if (qp->qp_num < prev) 821 /* qp_num should be ascending */ 822 goto err_loop; 823 824 if (min_range == 0) { 825 min_range = qp->qp_num; 826 } else if (qp->qp_num > (prev + 1)) { 827 if (fill_res_range_qp_entry(msg, min_range, prev)) 828 goto err_loop; 829 830 min_range = qp->qp_num; 831 } 832 prev = qp->qp_num; 833 rdma_restrack_put(res); 834 } 835 836 xa_unlock(&rt->xa); 837 838 if (fill_res_range_qp_entry(msg, min_range, prev)) 839 goto err; 840 841 nla_nest_end(msg, table_attr); 842 return 0; 843 844err_loop: 845 rdma_restrack_put(res); 846 xa_unlock(&rt->xa); 847err: 848 nla_nest_cancel(msg, table_attr); 849 return -EMSGSIZE; 850} 851 852static int fill_res_srq_entry(struct sk_buff *msg, bool has_cap_net_admin, 853 struct rdma_restrack_entry *res, uint32_t port) 854{ 855 struct ib_srq *srq = container_of(res, struct ib_srq, res); 856 struct ib_device *dev = srq->device; 857 858 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SRQN, srq->res.id)) 859 goto err; 860 861 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, srq->srq_type)) 862 goto err; 863 864 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, srq->pd->res.id)) 865 goto err; 866 867 if (ib_srq_has_cq(srq->srq_type)) { 868 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, 869 srq->ext.cq->res.id)) 870 goto err; 871 } 872 873 if (fill_res_srq_qps(msg, srq)) 874 goto err; 875 876 if (fill_res_name_pid(msg, res)) 877 goto err; 878 879 if (dev->ops.fill_res_srq_entry) 880 return dev->ops.fill_res_srq_entry(msg, srq); 881 882 return 0; 883 884err: 885 return -EMSGSIZE; 886} 887 888static int fill_res_srq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 889 struct rdma_restrack_entry *res, uint32_t port) 890{ 891 struct ib_srq *srq = container_of(res, struct ib_srq, res); 892 struct ib_device *dev = srq->device; 893 894 if (!dev->ops.fill_res_srq_entry_raw) 895 return -EINVAL; 896 return dev->ops.fill_res_srq_entry_raw(msg, srq); 897} 898 899static int fill_stat_counter_mode(struct sk_buff *msg, 900 struct rdma_counter *counter) 901{ 902 struct rdma_counter_mode *m = &counter->mode; 903 904 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode)) 905 return -EMSGSIZE; 906 907 if (m->mode == RDMA_COUNTER_MODE_AUTO) { 908 if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) && 909 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type)) 910 return -EMSGSIZE; 911 912 if ((m->mask & RDMA_COUNTER_MASK_PID) && 913 fill_res_name_pid(msg, &counter->res)) 914 return -EMSGSIZE; 915 } 916 917 return 0; 918} 919 920static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn) 921{ 922 struct nlattr *entry_attr; 923 924 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY); 925 if (!entry_attr) 926 return -EMSGSIZE; 927 928 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) 929 goto err; 930 931 nla_nest_end(msg, entry_attr); 932 return 0; 933 934err: 935 nla_nest_cancel(msg, entry_attr); 936 return -EMSGSIZE; 937} 938 939static int fill_stat_counter_qps(struct sk_buff *msg, 940 struct rdma_counter *counter) 941{ 942 struct rdma_restrack_entry *res; 943 struct rdma_restrack_root *rt; 944 struct nlattr *table_attr; 945 struct ib_qp *qp = NULL; 946 unsigned long id = 0; 947 int ret = 0; 948 949 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP); 950 if (!table_attr) 951 return -EMSGSIZE; 952 953 rt = &counter->device->res[RDMA_RESTRACK_QP]; 954 xa_lock(&rt->xa); 955 xa_for_each(&rt->xa, id, res) { 956 qp = container_of(res, struct ib_qp, res); 957 if (!qp->counter || (qp->counter->id != counter->id)) 958 continue; 959 960 ret = fill_stat_counter_qp_entry(msg, qp->qp_num); 961 if (ret) 962 goto err; 963 } 964 965 xa_unlock(&rt->xa); 966 nla_nest_end(msg, table_attr); 967 return 0; 968 969err: 970 xa_unlock(&rt->xa); 971 nla_nest_cancel(msg, table_attr); 972 return ret; 973} 974 975int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name, 976 u64 value) 977{ 978 struct nlattr *entry_attr; 979 980 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY); 981 if (!entry_attr) 982 return -EMSGSIZE; 983 984 if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, 985 name)) 986 goto err; 987 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE, 988 value, RDMA_NLDEV_ATTR_PAD)) 989 goto err; 990 991 nla_nest_end(msg, entry_attr); 992 return 0; 993 994err: 995 nla_nest_cancel(msg, entry_attr); 996 return -EMSGSIZE; 997} 998EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry); 999 1000static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin, 1001 struct rdma_restrack_entry *res, uint32_t port) 1002{ 1003 struct ib_mr *mr = container_of(res, struct ib_mr, res); 1004 struct ib_device *dev = mr->pd->device; 1005 1006 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) 1007 goto err; 1008 1009 if (dev->ops.fill_stat_mr_entry) 1010 return dev->ops.fill_stat_mr_entry(msg, mr); 1011 return 0; 1012 1013err: 1014 return -EMSGSIZE; 1015} 1016 1017static int fill_stat_counter_hwcounters(struct sk_buff *msg, 1018 struct rdma_counter *counter) 1019{ 1020 struct rdma_hw_stats *st = counter->stats; 1021 struct nlattr *table_attr; 1022 int i; 1023 1024 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 1025 if (!table_attr) 1026 return -EMSGSIZE; 1027 1028 mutex_lock(&st->lock); 1029 for (i = 0; i < st->num_counters; i++) { 1030 if (test_bit(i, st->is_disabled)) 1031 continue; 1032 if (rdma_nl_stat_hwcounter_entry(msg, st->descs[i].name, 1033 st->value[i])) 1034 goto err; 1035 } 1036 mutex_unlock(&st->lock); 1037 1038 nla_nest_end(msg, table_attr); 1039 return 0; 1040 1041err: 1042 mutex_unlock(&st->lock); 1043 nla_nest_cancel(msg, table_attr); 1044 return -EMSGSIZE; 1045} 1046 1047static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin, 1048 struct rdma_restrack_entry *res, 1049 uint32_t port) 1050{ 1051 struct rdma_counter *counter = 1052 container_of(res, struct rdma_counter, res); 1053 1054 if (port && port != counter->port) 1055 return -EAGAIN; 1056 1057 /* Dump it even query failed */ 1058 rdma_counter_query_stats(counter); 1059 1060 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) || 1061 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) || 1062 fill_stat_counter_mode(msg, counter) || 1063 fill_stat_counter_qps(msg, counter) || 1064 fill_stat_counter_hwcounters(msg, counter)) 1065 return -EMSGSIZE; 1066 1067 return 0; 1068} 1069 1070static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1071 struct netlink_ext_ack *extack) 1072{ 1073 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1074 struct ib_device *device; 1075 struct sk_buff *msg; 1076 u32 index; 1077 int err; 1078 1079 err = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1080 nldev_policy, NL_VALIDATE_LIBERAL, extack); 1081 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1082 return -EINVAL; 1083 1084 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1085 1086 device = ib_device_get_by_index(sock_net(skb->sk), index); 1087 if (!device) 1088 return -EINVAL; 1089 1090 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1091 if (!msg) { 1092 err = -ENOMEM; 1093 goto err; 1094 } 1095 1096 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1097 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1098 0, 0); 1099 if (!nlh) { 1100 err = -EMSGSIZE; 1101 goto err_free; 1102 } 1103 1104 err = fill_dev_info(msg, device); 1105 if (err) 1106 goto err_free; 1107 1108 nlmsg_end(msg, nlh); 1109 1110 ib_device_put(device); 1111 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1112 1113err_free: 1114 nlmsg_free(msg); 1115err: 1116 ib_device_put(device); 1117 return err; 1118} 1119 1120static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1121 struct netlink_ext_ack *extack) 1122{ 1123 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1124 struct ib_device *device; 1125 u32 index; 1126 int err; 1127 1128 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1129 nldev_policy, extack); 1130 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1131 return -EINVAL; 1132 1133 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1134 device = ib_device_get_by_index(sock_net(skb->sk), index); 1135 if (!device) 1136 return -EINVAL; 1137 1138 if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) { 1139 char name[IB_DEVICE_NAME_MAX] = {}; 1140 1141 nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 1142 IB_DEVICE_NAME_MAX); 1143 if (strlen(name) == 0) { 1144 err = -EINVAL; 1145 goto done; 1146 } 1147 err = ib_device_rename(device, name); 1148 goto done; 1149 } 1150 1151 if (tb[RDMA_NLDEV_NET_NS_FD]) { 1152 u32 ns_fd; 1153 1154 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]); 1155 err = ib_device_set_netns_put(skb, device, ns_fd); 1156 goto put_done; 1157 } 1158 1159 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) { 1160 u8 use_dim; 1161 1162 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]); 1163 err = ib_device_set_dim(device, use_dim); 1164 goto done; 1165 } 1166 1167done: 1168 ib_device_put(device); 1169put_done: 1170 return err; 1171} 1172 1173static int _nldev_get_dumpit(struct ib_device *device, 1174 struct sk_buff *skb, 1175 struct netlink_callback *cb, 1176 unsigned int idx) 1177{ 1178 int start = cb->args[0]; 1179 struct nlmsghdr *nlh; 1180 1181 if (idx < start) 1182 return 0; 1183 1184 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1185 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1186 0, NLM_F_MULTI); 1187 1188 if (!nlh || fill_dev_info(skb, device)) { 1189 nlmsg_cancel(skb, nlh); 1190 goto out; 1191 } 1192 1193 nlmsg_end(skb, nlh); 1194 1195 idx++; 1196 1197out: cb->args[0] = idx; 1198 return skb->len; 1199} 1200 1201static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) 1202{ 1203 /* 1204 * There is no need to take lock, because 1205 * we are relying on ib_core's locking. 1206 */ 1207 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb); 1208} 1209 1210static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1211 struct netlink_ext_ack *extack) 1212{ 1213 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1214 struct ib_device *device; 1215 struct sk_buff *msg; 1216 u32 index; 1217 u32 port; 1218 int err; 1219 1220 err = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1221 nldev_policy, NL_VALIDATE_LIBERAL, extack); 1222 if (err || 1223 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 1224 !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1225 return -EINVAL; 1226 1227 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1228 device = ib_device_get_by_index(sock_net(skb->sk), index); 1229 if (!device) 1230 return -EINVAL; 1231 1232 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1233 if (!rdma_is_port_valid(device, port)) { 1234 err = -EINVAL; 1235 goto err; 1236 } 1237 1238 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1239 if (!msg) { 1240 err = -ENOMEM; 1241 goto err; 1242 } 1243 1244 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1245 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1246 0, 0); 1247 if (!nlh) { 1248 err = -EMSGSIZE; 1249 goto err_free; 1250 } 1251 1252 err = fill_port_info(msg, device, port, sock_net(skb->sk)); 1253 if (err) 1254 goto err_free; 1255 1256 nlmsg_end(msg, nlh); 1257 ib_device_put(device); 1258 1259 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1260 1261err_free: 1262 nlmsg_free(msg); 1263err: 1264 ib_device_put(device); 1265 return err; 1266} 1267 1268static int nldev_port_get_dumpit(struct sk_buff *skb, 1269 struct netlink_callback *cb) 1270{ 1271 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1272 struct ib_device *device; 1273 int start = cb->args[0]; 1274 struct nlmsghdr *nlh; 1275 u32 idx = 0; 1276 u32 ifindex; 1277 int err; 1278 unsigned int p; 1279 1280 err = __nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1281 nldev_policy, NL_VALIDATE_LIBERAL, NULL); 1282 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1283 return -EINVAL; 1284 1285 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1286 device = ib_device_get_by_index(sock_net(skb->sk), ifindex); 1287 if (!device) 1288 return -EINVAL; 1289 1290 rdma_for_each_port (device, p) { 1291 /* 1292 * The dumpit function returns all information from specific 1293 * index. This specific index is taken from the netlink 1294 * messages request sent by user and it is available 1295 * in cb->args[0]. 1296 * 1297 * Usually, the user doesn't fill this field and it causes 1298 * to return everything. 1299 * 1300 */ 1301 if (idx < start) { 1302 idx++; 1303 continue; 1304 } 1305 1306 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, 1307 cb->nlh->nlmsg_seq, 1308 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1309 RDMA_NLDEV_CMD_PORT_GET), 1310 0, NLM_F_MULTI); 1311 1312 if (!nlh || fill_port_info(skb, device, p, sock_net(skb->sk))) { 1313 nlmsg_cancel(skb, nlh); 1314 goto out; 1315 } 1316 idx++; 1317 nlmsg_end(skb, nlh); 1318 } 1319 1320out: 1321 ib_device_put(device); 1322 cb->args[0] = idx; 1323 return skb->len; 1324} 1325 1326static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1327 struct netlink_ext_ack *extack) 1328{ 1329 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1330 bool show_details = false; 1331 struct ib_device *device; 1332 struct sk_buff *msg; 1333 u32 index; 1334 int ret; 1335 1336 ret = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1337 nldev_policy, NL_VALIDATE_LIBERAL, extack); 1338 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1339 return -EINVAL; 1340 1341 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1342 device = ib_device_get_by_index(sock_net(skb->sk), index); 1343 if (!device) 1344 return -EINVAL; 1345 1346 if (tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]) 1347 show_details = nla_get_u8(tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]); 1348 1349 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1350 if (!msg) { 1351 ret = -ENOMEM; 1352 goto err; 1353 } 1354 1355 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1356 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1357 0, 0); 1358 if (!nlh) { 1359 ret = -EMSGSIZE; 1360 goto err_free; 1361 } 1362 1363 ret = fill_res_info(msg, device, show_details); 1364 if (ret) 1365 goto err_free; 1366 1367 nlmsg_end(msg, nlh); 1368 ib_device_put(device); 1369 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1370 1371err_free: 1372 nlmsg_free(msg); 1373err: 1374 ib_device_put(device); 1375 return ret; 1376} 1377 1378static int _nldev_res_get_dumpit(struct ib_device *device, 1379 struct sk_buff *skb, 1380 struct netlink_callback *cb, 1381 unsigned int idx) 1382{ 1383 int start = cb->args[0]; 1384 struct nlmsghdr *nlh; 1385 1386 if (idx < start) 1387 return 0; 1388 1389 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1390 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1391 0, NLM_F_MULTI); 1392 1393 if (!nlh || fill_res_info(skb, device, false)) { 1394 nlmsg_cancel(skb, nlh); 1395 goto out; 1396 } 1397 nlmsg_end(skb, nlh); 1398 1399 idx++; 1400 1401out: 1402 cb->args[0] = idx; 1403 return skb->len; 1404} 1405 1406static int nldev_res_get_dumpit(struct sk_buff *skb, 1407 struct netlink_callback *cb) 1408{ 1409 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb); 1410} 1411 1412struct nldev_fill_res_entry { 1413 enum rdma_nldev_attr nldev_attr; 1414 u8 flags; 1415 u32 entry; 1416 u32 id; 1417}; 1418 1419enum nldev_res_flags { 1420 NLDEV_PER_DEV = 1 << 0, 1421}; 1422 1423static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = { 1424 [RDMA_RESTRACK_QP] = { 1425 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP, 1426 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY, 1427 .id = RDMA_NLDEV_ATTR_RES_LQPN, 1428 }, 1429 [RDMA_RESTRACK_CM_ID] = { 1430 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID, 1431 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY, 1432 .id = RDMA_NLDEV_ATTR_RES_CM_IDN, 1433 }, 1434 [RDMA_RESTRACK_CQ] = { 1435 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ, 1436 .flags = NLDEV_PER_DEV, 1437 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY, 1438 .id = RDMA_NLDEV_ATTR_RES_CQN, 1439 }, 1440 [RDMA_RESTRACK_MR] = { 1441 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR, 1442 .flags = NLDEV_PER_DEV, 1443 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY, 1444 .id = RDMA_NLDEV_ATTR_RES_MRN, 1445 }, 1446 [RDMA_RESTRACK_PD] = { 1447 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD, 1448 .flags = NLDEV_PER_DEV, 1449 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY, 1450 .id = RDMA_NLDEV_ATTR_RES_PDN, 1451 }, 1452 [RDMA_RESTRACK_COUNTER] = { 1453 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER, 1454 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, 1455 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID, 1456 }, 1457 [RDMA_RESTRACK_CTX] = { 1458 .nldev_attr = RDMA_NLDEV_ATTR_RES_CTX, 1459 .flags = NLDEV_PER_DEV, 1460 .entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY, 1461 .id = RDMA_NLDEV_ATTR_RES_CTXN, 1462 }, 1463 [RDMA_RESTRACK_SRQ] = { 1464 .nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ, 1465 .flags = NLDEV_PER_DEV, 1466 .entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY, 1467 .id = RDMA_NLDEV_ATTR_RES_SRQN, 1468 }, 1469 1470}; 1471 1472static noinline_for_stack int 1473res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1474 struct netlink_ext_ack *extack, 1475 enum rdma_restrack_type res_type, 1476 res_fill_func_t fill_func) 1477{ 1478 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1479 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1480 struct rdma_restrack_entry *res; 1481 struct ib_device *device; 1482 u32 index, id, port = 0; 1483 bool has_cap_net_admin; 1484 struct sk_buff *msg; 1485 int ret; 1486 1487 ret = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1488 nldev_policy, NL_VALIDATE_LIBERAL, extack); 1489 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id]) 1490 return -EINVAL; 1491 1492 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1493 device = ib_device_get_by_index(sock_net(skb->sk), index); 1494 if (!device) 1495 return -EINVAL; 1496 1497 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1498 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1499 if (!rdma_is_port_valid(device, port)) { 1500 ret = -EINVAL; 1501 goto err; 1502 } 1503 } 1504 1505 if ((port && fe->flags & NLDEV_PER_DEV) || 1506 (!port && ~fe->flags & NLDEV_PER_DEV)) { 1507 ret = -EINVAL; 1508 goto err; 1509 } 1510 1511 id = nla_get_u32(tb[fe->id]); 1512 res = rdma_restrack_get_byid(device, res_type, id); 1513 if (IS_ERR(res)) { 1514 ret = PTR_ERR(res); 1515 goto err; 1516 } 1517 1518 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1519 if (!msg) { 1520 ret = -ENOMEM; 1521 goto err_get; 1522 } 1523 1524 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1525 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1526 RDMA_NL_GET_OP(nlh->nlmsg_type)), 1527 0, 0); 1528 1529 if (!nlh || fill_nldev_handle(msg, device)) { 1530 ret = -EMSGSIZE; 1531 goto err_free; 1532 } 1533 1534 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN); 1535 1536 ret = fill_func(msg, has_cap_net_admin, res, port); 1537 if (ret) 1538 goto err_free; 1539 1540 rdma_restrack_put(res); 1541 nlmsg_end(msg, nlh); 1542 ib_device_put(device); 1543 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1544 1545err_free: 1546 nlmsg_free(msg); 1547err_get: 1548 rdma_restrack_put(res); 1549err: 1550 ib_device_put(device); 1551 return ret; 1552} 1553 1554static int res_get_common_dumpit(struct sk_buff *skb, 1555 struct netlink_callback *cb, 1556 enum rdma_restrack_type res_type, 1557 res_fill_func_t fill_func) 1558{ 1559 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1560 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1561 struct rdma_restrack_entry *res; 1562 struct rdma_restrack_root *rt; 1563 int err, ret = 0, idx = 0; 1564 bool show_details = false; 1565 struct nlattr *table_attr; 1566 struct nlattr *entry_attr; 1567 struct ib_device *device; 1568 int start = cb->args[0]; 1569 bool has_cap_net_admin; 1570 struct nlmsghdr *nlh; 1571 unsigned long id; 1572 u32 index, port = 0; 1573 bool filled = false; 1574 1575 err = __nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1576 nldev_policy, NL_VALIDATE_LIBERAL, NULL); 1577 /* 1578 * Right now, we are expecting the device index to get res information, 1579 * but it is possible to extend this code to return all devices in 1580 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX. 1581 * if it doesn't exist, we will iterate over all devices. 1582 * 1583 * But it is not needed for now. 1584 */ 1585 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1586 return -EINVAL; 1587 1588 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1589 device = ib_device_get_by_index(sock_net(skb->sk), index); 1590 if (!device) 1591 return -EINVAL; 1592 1593 if (tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]) 1594 show_details = nla_get_u8(tb[RDMA_NLDEV_ATTR_DRIVER_DETAILS]); 1595 1596 /* 1597 * If no PORT_INDEX is supplied, we will return all QPs from that device 1598 */ 1599 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1600 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1601 if (!rdma_is_port_valid(device, port)) { 1602 ret = -EINVAL; 1603 goto err_index; 1604 } 1605 } 1606 1607 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1608 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1609 RDMA_NL_GET_OP(cb->nlh->nlmsg_type)), 1610 0, NLM_F_MULTI); 1611 1612 if (!nlh || fill_nldev_handle(skb, device)) { 1613 ret = -EMSGSIZE; 1614 goto err; 1615 } 1616 1617 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr); 1618 if (!table_attr) { 1619 ret = -EMSGSIZE; 1620 goto err; 1621 } 1622 1623 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN); 1624 1625 rt = &device->res[res_type]; 1626 xa_lock(&rt->xa); 1627 /* 1628 * FIXME: if the skip ahead is something common this loop should 1629 * use xas_for_each & xas_pause to optimize, we can have a lot of 1630 * objects. 1631 */ 1632 xa_for_each(&rt->xa, id, res) { 1633 if (xa_get_mark(&rt->xa, res->id, RESTRACK_DD) && !show_details) 1634 goto next; 1635 1636 if (idx < start || !rdma_restrack_get(res)) 1637 goto next; 1638 1639 xa_unlock(&rt->xa); 1640 1641 filled = true; 1642 1643 entry_attr = nla_nest_start_noflag(skb, fe->entry); 1644 if (!entry_attr) { 1645 ret = -EMSGSIZE; 1646 rdma_restrack_put(res); 1647 goto msg_full; 1648 } 1649 1650 ret = fill_func(skb, has_cap_net_admin, res, port); 1651 1652 rdma_restrack_put(res); 1653 1654 if (ret) { 1655 nla_nest_cancel(skb, entry_attr); 1656 if (ret == -EMSGSIZE) 1657 goto msg_full; 1658 if (ret == -EAGAIN) 1659 goto again; 1660 goto res_err; 1661 } 1662 nla_nest_end(skb, entry_attr); 1663again: xa_lock(&rt->xa); 1664next: idx++; 1665 } 1666 xa_unlock(&rt->xa); 1667 1668msg_full: 1669 nla_nest_end(skb, table_attr); 1670 nlmsg_end(skb, nlh); 1671 cb->args[0] = idx; 1672 1673 /* 1674 * No more entries to fill, cancel the message and 1675 * return 0 to mark end of dumpit. 1676 */ 1677 if (!filled) 1678 goto err; 1679 1680 ib_device_put(device); 1681 return skb->len; 1682 1683res_err: 1684 nla_nest_cancel(skb, table_attr); 1685 1686err: 1687 nlmsg_cancel(skb, nlh); 1688 1689err_index: 1690 ib_device_put(device); 1691 return ret; 1692} 1693 1694#define RES_GET_FUNCS(name, type) \ 1695 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \ 1696 struct netlink_callback *cb) \ 1697 { \ 1698 return res_get_common_dumpit(skb, cb, type, \ 1699 fill_res_##name##_entry); \ 1700 } \ 1701 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \ 1702 struct nlmsghdr *nlh, \ 1703 struct netlink_ext_ack *extack) \ 1704 { \ 1705 return res_get_common_doit(skb, nlh, extack, type, \ 1706 fill_res_##name##_entry); \ 1707 } 1708 1709RES_GET_FUNCS(qp, RDMA_RESTRACK_QP); 1710RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP); 1711RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID); 1712RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ); 1713RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ); 1714RES_GET_FUNCS(pd, RDMA_RESTRACK_PD); 1715RES_GET_FUNCS(mr, RDMA_RESTRACK_MR); 1716RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR); 1717RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER); 1718RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX); 1719RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ); 1720RES_GET_FUNCS(srq_raw, RDMA_RESTRACK_SRQ); 1721 1722static LIST_HEAD(link_ops); 1723static DECLARE_RWSEM(link_ops_rwsem); 1724 1725static const struct rdma_link_ops *link_ops_get(const char *type) 1726{ 1727 const struct rdma_link_ops *ops; 1728 1729 list_for_each_entry(ops, &link_ops, list) { 1730 if (!strcmp(ops->type, type)) 1731 goto out; 1732 } 1733 ops = NULL; 1734out: 1735 return ops; 1736} 1737 1738void rdma_link_register(struct rdma_link_ops *ops) 1739{ 1740 down_write(&link_ops_rwsem); 1741 if (WARN_ON_ONCE(link_ops_get(ops->type))) 1742 goto out; 1743 list_add(&ops->list, &link_ops); 1744out: 1745 up_write(&link_ops_rwsem); 1746} 1747EXPORT_SYMBOL(rdma_link_register); 1748 1749void rdma_link_unregister(struct rdma_link_ops *ops) 1750{ 1751 down_write(&link_ops_rwsem); 1752 list_del(&ops->list); 1753 up_write(&link_ops_rwsem); 1754} 1755EXPORT_SYMBOL(rdma_link_unregister); 1756 1757static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, 1758 struct netlink_ext_ack *extack) 1759{ 1760 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1761 char ibdev_name[IB_DEVICE_NAME_MAX]; 1762 const struct rdma_link_ops *ops; 1763 char ndev_name[IFNAMSIZ]; 1764 struct net_device *ndev; 1765 char type[IFNAMSIZ]; 1766 int err; 1767 1768 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1769 nldev_policy, extack); 1770 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] || 1771 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME]) 1772 return -EINVAL; 1773 1774 nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 1775 sizeof(ibdev_name)); 1776 if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0) 1777 return -EINVAL; 1778 1779 nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type)); 1780 nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME], 1781 sizeof(ndev_name)); 1782 1783 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name); 1784 if (!ndev) 1785 return -ENODEV; 1786 1787 down_read(&link_ops_rwsem); 1788 ops = link_ops_get(type); 1789#ifdef CONFIG_MODULES 1790 if (!ops) { 1791 up_read(&link_ops_rwsem); 1792 request_module("rdma-link-%s", type); 1793 down_read(&link_ops_rwsem); 1794 ops = link_ops_get(type); 1795 } 1796#endif 1797 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL; 1798 up_read(&link_ops_rwsem); 1799 dev_put(ndev); 1800 1801 return err; 1802} 1803 1804static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, 1805 struct netlink_ext_ack *extack) 1806{ 1807 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1808 struct ib_device *device; 1809 u32 index; 1810 int err; 1811 1812 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1813 nldev_policy, extack); 1814 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1815 return -EINVAL; 1816 1817 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1818 device = ib_device_get_by_index(sock_net(skb->sk), index); 1819 if (!device) 1820 return -EINVAL; 1821 1822 if (!(device->attrs.kernel_cap_flags & IBK_ALLOW_USER_UNREG)) { 1823 ib_device_put(device); 1824 return -EINVAL; 1825 } 1826 1827 ib_unregister_device_and_put(device); 1828 return 0; 1829} 1830 1831static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh, 1832 struct netlink_ext_ack *extack) 1833{ 1834 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1835 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE]; 1836 struct ib_client_nl_info data = {}; 1837 struct ib_device *ibdev = NULL; 1838 struct sk_buff *msg; 1839 u32 index; 1840 int err; 1841 1842 err = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy, 1843 NL_VALIDATE_LIBERAL, extack); 1844 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE]) 1845 return -EINVAL; 1846 1847 nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE], 1848 sizeof(client_name)); 1849 1850 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) { 1851 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1852 ibdev = ib_device_get_by_index(sock_net(skb->sk), index); 1853 if (!ibdev) 1854 return -EINVAL; 1855 1856 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1857 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1858 if (!rdma_is_port_valid(ibdev, data.port)) { 1859 err = -EINVAL; 1860 goto out_put; 1861 } 1862 } else { 1863 data.port = -1; 1864 } 1865 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1866 return -EINVAL; 1867 } 1868 1869 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1870 if (!msg) { 1871 err = -ENOMEM; 1872 goto out_put; 1873 } 1874 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1875 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1876 RDMA_NLDEV_CMD_GET_CHARDEV), 1877 0, 0); 1878 if (!nlh) { 1879 err = -EMSGSIZE; 1880 goto out_nlmsg; 1881 } 1882 1883 data.nl_msg = msg; 1884 err = ib_get_client_nl_info(ibdev, client_name, &data); 1885 if (err) 1886 goto out_nlmsg; 1887 1888 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV, 1889 huge_encode_dev(data.cdev->devt), 1890 RDMA_NLDEV_ATTR_PAD); 1891 if (err) 1892 goto out_data; 1893 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi, 1894 RDMA_NLDEV_ATTR_PAD); 1895 if (err) 1896 goto out_data; 1897 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME, 1898 dev_name(data.cdev))) { 1899 err = -EMSGSIZE; 1900 goto out_data; 1901 } 1902 1903 nlmsg_end(msg, nlh); 1904 put_device(data.cdev); 1905 if (ibdev) 1906 ib_device_put(ibdev); 1907 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1908 1909out_data: 1910 put_device(data.cdev); 1911out_nlmsg: 1912 nlmsg_free(msg); 1913out_put: 1914 if (ibdev) 1915 ib_device_put(ibdev); 1916 return err; 1917} 1918 1919static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1920 struct netlink_ext_ack *extack) 1921{ 1922 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1923 struct sk_buff *msg; 1924 int err; 1925 1926 err = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1927 nldev_policy, NL_VALIDATE_LIBERAL, extack); 1928 if (err) 1929 return err; 1930 1931 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1932 if (!msg) 1933 return -ENOMEM; 1934 1935 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1936 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1937 RDMA_NLDEV_CMD_SYS_GET), 1938 0, 0); 1939 if (!nlh) { 1940 nlmsg_free(msg); 1941 return -EMSGSIZE; 1942 } 1943 1944 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, 1945 (u8)ib_devices_shared_netns); 1946 if (err) { 1947 nlmsg_free(msg); 1948 return err; 1949 } 1950 1951 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE, 1952 (u8)privileged_qkey); 1953 if (err) { 1954 nlmsg_free(msg); 1955 return err; 1956 } 1957 1958 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_MONITOR_MODE, 1); 1959 if (err) { 1960 nlmsg_free(msg); 1961 return err; 1962 } 1963 /* 1964 * Copy-on-fork is supported. 1965 * See commits: 1966 * 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes") 1967 * 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm") 1968 * for more details. Don't backport this without them. 1969 * 1970 * Return value ignored on purpose, assume copy-on-fork is not 1971 * supported in case of failure. 1972 */ 1973 nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1); 1974 1975 nlmsg_end(msg, nlh); 1976 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1977} 1978 1979static int nldev_set_sys_set_netns_doit(struct nlattr *tb[]) 1980{ 1981 u8 enable; 1982 int err; 1983 1984 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]); 1985 /* Only 0 and 1 are supported */ 1986 if (enable > 1) 1987 return -EINVAL; 1988 1989 err = rdma_compatdev_set(enable); 1990 return err; 1991} 1992 1993static int nldev_set_sys_set_pqkey_doit(struct nlattr *tb[]) 1994{ 1995 u8 enable; 1996 1997 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE]); 1998 /* Only 0 and 1 are supported */ 1999 if (enable > 1) 2000 return -EINVAL; 2001 2002 privileged_qkey = enable; 2003 return 0; 2004} 2005 2006static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2007 struct netlink_ext_ack *extack) 2008{ 2009 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2010 int err; 2011 2012 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2013 nldev_policy, extack); 2014 if (err) 2015 return -EINVAL; 2016 2017 if (tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) 2018 return nldev_set_sys_set_netns_doit(tb); 2019 2020 if (tb[RDMA_NLDEV_SYS_ATTR_PRIVILEGED_QKEY_MODE]) 2021 return nldev_set_sys_set_pqkey_doit(tb); 2022 2023 return -EINVAL; 2024} 2025 2026 2027static int nldev_stat_set_mode_doit(struct sk_buff *msg, 2028 struct netlink_ext_ack *extack, 2029 struct nlattr *tb[], 2030 struct ib_device *device, u32 port) 2031{ 2032 u32 mode, mask = 0, qpn, cntn = 0; 2033 bool opcnt = false; 2034 int ret; 2035 2036 /* Currently only counter for QP is supported */ 2037 if (!tb[RDMA_NLDEV_ATTR_STAT_RES] || 2038 nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 2039 return -EINVAL; 2040 2041 if (tb[RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENABLED]) 2042 opcnt = !!nla_get_u8( 2043 tb[RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENABLED]); 2044 2045 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]); 2046 if (mode == RDMA_COUNTER_MODE_AUTO) { 2047 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]) 2048 mask = nla_get_u32( 2049 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]); 2050 return rdma_counter_set_auto_mode(device, port, mask, opcnt, 2051 extack); 2052 } 2053 2054 if (!tb[RDMA_NLDEV_ATTR_RES_LQPN]) 2055 return -EINVAL; 2056 2057 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 2058 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) { 2059 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 2060 ret = rdma_counter_bind_qpn(device, port, qpn, cntn); 2061 if (ret) 2062 return ret; 2063 } else { 2064 ret = rdma_counter_bind_qpn_alloc(device, port, qpn, &cntn); 2065 if (ret) 2066 return ret; 2067 } 2068 2069 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 2070 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 2071 ret = -EMSGSIZE; 2072 goto err_fill; 2073 } 2074 2075 return 0; 2076 2077err_fill: 2078 rdma_counter_unbind_qpn(device, port, qpn, cntn); 2079 return ret; 2080} 2081 2082static int nldev_stat_set_counter_dynamic_doit(struct nlattr *tb[], 2083 struct ib_device *device, 2084 u32 port) 2085{ 2086 struct rdma_hw_stats *stats; 2087 struct nlattr *entry_attr; 2088 unsigned long *target; 2089 int rem, i, ret = 0; 2090 u32 index; 2091 2092 stats = ib_get_hw_stats_port(device, port); 2093 if (!stats) 2094 return -EINVAL; 2095 2096 target = kcalloc(BITS_TO_LONGS(stats->num_counters), 2097 sizeof(*stats->is_disabled), GFP_KERNEL); 2098 if (!target) 2099 return -ENOMEM; 2100 2101 nla_for_each_nested(entry_attr, tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS], 2102 rem) { 2103 index = nla_get_u32(entry_attr); 2104 if ((index >= stats->num_counters) || 2105 !(stats->descs[index].flags & IB_STAT_FLAG_OPTIONAL)) { 2106 ret = -EINVAL; 2107 goto out; 2108 } 2109 2110 set_bit(index, target); 2111 } 2112 2113 for (i = 0; i < stats->num_counters; i++) { 2114 if (!(stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL)) 2115 continue; 2116 2117 ret = rdma_counter_modify(device, port, i, test_bit(i, target)); 2118 if (ret) 2119 goto out; 2120 } 2121 2122out: 2123 kfree(target); 2124 return ret; 2125} 2126 2127static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2128 struct netlink_ext_ack *extack) 2129{ 2130 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2131 struct ib_device *device; 2132 struct sk_buff *msg; 2133 u32 index, port; 2134 int ret; 2135 2136 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy, 2137 extack); 2138 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 2139 !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 2140 return -EINVAL; 2141 2142 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2143 device = ib_device_get_by_index(sock_net(skb->sk), index); 2144 if (!device) 2145 return -EINVAL; 2146 2147 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2148 if (!rdma_is_port_valid(device, port)) { 2149 ret = -EINVAL; 2150 goto err_put_device; 2151 } 2152 2153 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] && 2154 !tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) { 2155 ret = -EINVAL; 2156 goto err_put_device; 2157 } 2158 2159 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2160 if (!msg) { 2161 ret = -ENOMEM; 2162 goto err_put_device; 2163 } 2164 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2165 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2166 RDMA_NLDEV_CMD_STAT_SET), 2167 0, 0); 2168 if (!nlh || fill_nldev_handle(msg, device) || 2169 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { 2170 ret = -EMSGSIZE; 2171 goto err_free_msg; 2172 } 2173 2174 if (tb[RDMA_NLDEV_ATTR_STAT_MODE]) { 2175 ret = nldev_stat_set_mode_doit(msg, extack, tb, device, port); 2176 if (ret) 2177 goto err_free_msg; 2178 } 2179 2180 if (tb[RDMA_NLDEV_ATTR_STAT_HWCOUNTERS]) { 2181 ret = nldev_stat_set_counter_dynamic_doit(tb, device, port); 2182 if (ret) 2183 goto err_free_msg; 2184 } 2185 2186 nlmsg_end(msg, nlh); 2187 ib_device_put(device); 2188 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2189 2190err_free_msg: 2191 nlmsg_free(msg); 2192err_put_device: 2193 ib_device_put(device); 2194 return ret; 2195} 2196 2197static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2198 struct netlink_ext_ack *extack) 2199{ 2200 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2201 struct ib_device *device; 2202 struct sk_buff *msg; 2203 u32 index, port, qpn, cntn; 2204 int ret; 2205 2206 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2207 nldev_policy, extack); 2208 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 2209 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || 2210 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] || 2211 !tb[RDMA_NLDEV_ATTR_RES_LQPN]) 2212 return -EINVAL; 2213 2214 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 2215 return -EINVAL; 2216 2217 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2218 device = ib_device_get_by_index(sock_net(skb->sk), index); 2219 if (!device) 2220 return -EINVAL; 2221 2222 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2223 if (!rdma_is_port_valid(device, port)) { 2224 ret = -EINVAL; 2225 goto err; 2226 } 2227 2228 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2229 if (!msg) { 2230 ret = -ENOMEM; 2231 goto err; 2232 } 2233 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2234 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2235 RDMA_NLDEV_CMD_STAT_SET), 2236 0, 0); 2237 if (!nlh) { 2238 ret = -EMSGSIZE; 2239 goto err_fill; 2240 } 2241 2242 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 2243 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 2244 if (fill_nldev_handle(msg, device) || 2245 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 2246 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 2247 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 2248 ret = -EMSGSIZE; 2249 goto err_fill; 2250 } 2251 2252 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn); 2253 if (ret) 2254 goto err_fill; 2255 2256 nlmsg_end(msg, nlh); 2257 ib_device_put(device); 2258 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2259 2260err_fill: 2261 nlmsg_free(msg); 2262err: 2263 ib_device_put(device); 2264 return ret; 2265} 2266 2267static noinline_for_stack int 2268stat_get_doit_default_counter(struct sk_buff *skb, struct nlmsghdr *nlh, 2269 struct netlink_ext_ack *extack, 2270 struct nlattr *tb[]) 2271{ 2272 struct rdma_hw_stats *stats; 2273 struct nlattr *table_attr; 2274 struct ib_device *device; 2275 int ret, num_cnts, i; 2276 struct sk_buff *msg; 2277 u32 index, port; 2278 u64 v; 2279 2280 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 2281 return -EINVAL; 2282 2283 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2284 device = ib_device_get_by_index(sock_net(skb->sk), index); 2285 if (!device) 2286 return -EINVAL; 2287 2288 if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) { 2289 ret = -EINVAL; 2290 goto err; 2291 } 2292 2293 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2294 stats = ib_get_hw_stats_port(device, port); 2295 if (!stats) { 2296 ret = -EINVAL; 2297 goto err; 2298 } 2299 2300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2301 if (!msg) { 2302 ret = -ENOMEM; 2303 goto err; 2304 } 2305 2306 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2307 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2308 RDMA_NLDEV_CMD_STAT_GET), 2309 0, 0); 2310 2311 if (!nlh || fill_nldev_handle(msg, device) || 2312 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { 2313 ret = -EMSGSIZE; 2314 goto err_msg; 2315 } 2316 2317 mutex_lock(&stats->lock); 2318 2319 num_cnts = device->ops.get_hw_stats(device, stats, port, 0); 2320 if (num_cnts < 0) { 2321 ret = -EINVAL; 2322 goto err_stats; 2323 } 2324 2325 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 2326 if (!table_attr) { 2327 ret = -EMSGSIZE; 2328 goto err_stats; 2329 } 2330 for (i = 0; i < num_cnts; i++) { 2331 if (test_bit(i, stats->is_disabled)) 2332 continue; 2333 2334 v = stats->value[i] + 2335 rdma_counter_get_hwstat_value(device, port, i); 2336 if (rdma_nl_stat_hwcounter_entry(msg, 2337 stats->descs[i].name, v)) { 2338 ret = -EMSGSIZE; 2339 goto err_table; 2340 } 2341 } 2342 nla_nest_end(msg, table_attr); 2343 2344 mutex_unlock(&stats->lock); 2345 nlmsg_end(msg, nlh); 2346 ib_device_put(device); 2347 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2348 2349err_table: 2350 nla_nest_cancel(msg, table_attr); 2351err_stats: 2352 mutex_unlock(&stats->lock); 2353err_msg: 2354 nlmsg_free(msg); 2355err: 2356 ib_device_put(device); 2357 return ret; 2358} 2359 2360static noinline_for_stack int 2361stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh, 2362 struct netlink_ext_ack *extack, struct nlattr *tb[]) 2363 2364{ 2365 static enum rdma_nl_counter_mode mode; 2366 static enum rdma_nl_counter_mask mask; 2367 struct ib_device *device; 2368 struct sk_buff *msg; 2369 u32 index, port; 2370 bool opcnt; 2371 int ret; 2372 2373 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) 2374 return nldev_res_get_counter_doit(skb, nlh, extack); 2375 2376 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] || 2377 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 2378 return -EINVAL; 2379 2380 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2381 device = ib_device_get_by_index(sock_net(skb->sk), index); 2382 if (!device) 2383 return -EINVAL; 2384 2385 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2386 if (!rdma_is_port_valid(device, port)) { 2387 ret = -EINVAL; 2388 goto err; 2389 } 2390 2391 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2392 if (!msg) { 2393 ret = -ENOMEM; 2394 goto err; 2395 } 2396 2397 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2398 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2399 RDMA_NLDEV_CMD_STAT_GET), 2400 0, 0); 2401 if (!nlh) { 2402 ret = -EMSGSIZE; 2403 goto err_msg; 2404 } 2405 2406 ret = rdma_counter_get_mode(device, port, &mode, &mask, &opcnt); 2407 if (ret) 2408 goto err_msg; 2409 2410 if (fill_nldev_handle(msg, device) || 2411 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 2412 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) { 2413 ret = -EMSGSIZE; 2414 goto err_msg; 2415 } 2416 2417 if ((mode == RDMA_COUNTER_MODE_AUTO) && 2418 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) { 2419 ret = -EMSGSIZE; 2420 goto err_msg; 2421 } 2422 2423 if ((mode == RDMA_COUNTER_MODE_AUTO) && 2424 nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_OPCOUNTER_ENABLED, opcnt)) { 2425 ret = -EMSGSIZE; 2426 goto err_msg; 2427 } 2428 2429 nlmsg_end(msg, nlh); 2430 ib_device_put(device); 2431 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2432 2433err_msg: 2434 nlmsg_free(msg); 2435err: 2436 ib_device_put(device); 2437 return ret; 2438} 2439 2440static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2441 struct netlink_ext_ack *extack) 2442{ 2443 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2444 int ret; 2445 2446 ret = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2447 nldev_policy, NL_VALIDATE_LIBERAL, extack); 2448 if (ret) 2449 return -EINVAL; 2450 2451 if (!tb[RDMA_NLDEV_ATTR_STAT_RES]) 2452 return stat_get_doit_default_counter(skb, nlh, extack, tb); 2453 2454 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2455 case RDMA_NLDEV_ATTR_RES_QP: 2456 ret = stat_get_doit_qp(skb, nlh, extack, tb); 2457 break; 2458 case RDMA_NLDEV_ATTR_RES_MR: 2459 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR, 2460 fill_stat_mr_entry); 2461 break; 2462 default: 2463 ret = -EINVAL; 2464 break; 2465 } 2466 2467 return ret; 2468} 2469 2470static int nldev_stat_get_dumpit(struct sk_buff *skb, 2471 struct netlink_callback *cb) 2472{ 2473 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2474 int ret; 2475 2476 ret = __nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2477 nldev_policy, NL_VALIDATE_LIBERAL, NULL); 2478 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES]) 2479 return -EINVAL; 2480 2481 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2482 case RDMA_NLDEV_ATTR_RES_QP: 2483 ret = nldev_res_get_counter_dumpit(skb, cb); 2484 break; 2485 case RDMA_NLDEV_ATTR_RES_MR: 2486 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR, 2487 fill_stat_mr_entry); 2488 break; 2489 default: 2490 ret = -EINVAL; 2491 break; 2492 } 2493 2494 return ret; 2495} 2496 2497static int nldev_stat_get_counter_status_doit(struct sk_buff *skb, 2498 struct nlmsghdr *nlh, 2499 struct netlink_ext_ack *extack) 2500{ 2501 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX], *table, *entry; 2502 struct rdma_hw_stats *stats; 2503 struct ib_device *device; 2504 struct sk_buff *msg; 2505 u32 devid, port; 2506 int ret, i; 2507 2508 ret = __nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2509 nldev_policy, NL_VALIDATE_LIBERAL, extack); 2510 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 2511 !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 2512 return -EINVAL; 2513 2514 devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2515 device = ib_device_get_by_index(sock_net(skb->sk), devid); 2516 if (!device) 2517 return -EINVAL; 2518 2519 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2520 if (!rdma_is_port_valid(device, port)) { 2521 ret = -EINVAL; 2522 goto err; 2523 } 2524 2525 stats = ib_get_hw_stats_port(device, port); 2526 if (!stats) { 2527 ret = -EINVAL; 2528 goto err; 2529 } 2530 2531 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2532 if (!msg) { 2533 ret = -ENOMEM; 2534 goto err; 2535 } 2536 2537 nlh = nlmsg_put( 2538 msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2539 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_STAT_GET_STATUS), 2540 0, 0); 2541 2542 ret = -EMSGSIZE; 2543 if (!nlh || fill_nldev_handle(msg, device) || 2544 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) 2545 goto err_msg; 2546 2547 table = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 2548 if (!table) 2549 goto err_msg; 2550 2551 mutex_lock(&stats->lock); 2552 for (i = 0; i < stats->num_counters; i++) { 2553 entry = nla_nest_start(msg, 2554 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY); 2555 if (!entry) 2556 goto err_msg_table; 2557 2558 if (nla_put_string(msg, 2559 RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, 2560 stats->descs[i].name) || 2561 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_INDEX, i)) 2562 goto err_msg_entry; 2563 2564 if ((stats->descs[i].flags & IB_STAT_FLAG_OPTIONAL) && 2565 (nla_put_u8(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_DYNAMIC, 2566 !test_bit(i, stats->is_disabled)))) 2567 goto err_msg_entry; 2568 2569 nla_nest_end(msg, entry); 2570 } 2571 mutex_unlock(&stats->lock); 2572 2573 nla_nest_end(msg, table); 2574 nlmsg_end(msg, nlh); 2575 ib_device_put(device); 2576 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2577 2578err_msg_entry: 2579 nla_nest_cancel(msg, entry); 2580err_msg_table: 2581 mutex_unlock(&stats->lock); 2582 nla_nest_cancel(msg, table); 2583err_msg: 2584 nlmsg_free(msg); 2585err: 2586 ib_device_put(device); 2587 return ret; 2588} 2589 2590static int nldev_newdev(struct sk_buff *skb, struct nlmsghdr *nlh, 2591 struct netlink_ext_ack *extack) 2592{ 2593 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2594 enum rdma_nl_dev_type type; 2595 struct ib_device *parent; 2596 char name[IFNAMSIZ] = {}; 2597 u32 parentid; 2598 int ret; 2599 2600 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2601 nldev_policy, extack); 2602 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 2603 !tb[RDMA_NLDEV_ATTR_DEV_NAME] || !tb[RDMA_NLDEV_ATTR_DEV_TYPE]) 2604 return -EINVAL; 2605 2606 nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME], sizeof(name)); 2607 type = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_TYPE]); 2608 parentid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2609 parent = ib_device_get_by_index(sock_net(skb->sk), parentid); 2610 if (!parent) 2611 return -EINVAL; 2612 2613 ret = ib_add_sub_device(parent, type, name); 2614 ib_device_put(parent); 2615 2616 return ret; 2617} 2618 2619static int nldev_deldev(struct sk_buff *skb, struct nlmsghdr *nlh, 2620 struct netlink_ext_ack *extack) 2621{ 2622 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2623 struct ib_device *device; 2624 u32 devid; 2625 int ret; 2626 2627 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2628 nldev_policy, extack); 2629 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 2630 return -EINVAL; 2631 2632 devid = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2633 device = ib_device_get_by_index(sock_net(skb->sk), devid); 2634 if (!device) 2635 return -EINVAL; 2636 2637 return ib_del_sub_device_and_put(device); 2638} 2639 2640static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { 2641 [RDMA_NLDEV_CMD_GET] = { 2642 .doit = nldev_get_doit, 2643 .dump = nldev_get_dumpit, 2644 }, 2645 [RDMA_NLDEV_CMD_GET_CHARDEV] = { 2646 .doit = nldev_get_chardev, 2647 }, 2648 [RDMA_NLDEV_CMD_SET] = { 2649 .doit = nldev_set_doit, 2650 .flags = RDMA_NL_ADMIN_PERM, 2651 }, 2652 [RDMA_NLDEV_CMD_NEWLINK] = { 2653 .doit = nldev_newlink, 2654 .flags = RDMA_NL_ADMIN_PERM, 2655 }, 2656 [RDMA_NLDEV_CMD_DELLINK] = { 2657 .doit = nldev_dellink, 2658 .flags = RDMA_NL_ADMIN_PERM, 2659 }, 2660 [RDMA_NLDEV_CMD_PORT_GET] = { 2661 .doit = nldev_port_get_doit, 2662 .dump = nldev_port_get_dumpit, 2663 }, 2664 [RDMA_NLDEV_CMD_RES_GET] = { 2665 .doit = nldev_res_get_doit, 2666 .dump = nldev_res_get_dumpit, 2667 }, 2668 [RDMA_NLDEV_CMD_RES_QP_GET] = { 2669 .doit = nldev_res_get_qp_doit, 2670 .dump = nldev_res_get_qp_dumpit, 2671 }, 2672 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = { 2673 .doit = nldev_res_get_cm_id_doit, 2674 .dump = nldev_res_get_cm_id_dumpit, 2675 }, 2676 [RDMA_NLDEV_CMD_RES_CQ_GET] = { 2677 .doit = nldev_res_get_cq_doit, 2678 .dump = nldev_res_get_cq_dumpit, 2679 }, 2680 [RDMA_NLDEV_CMD_RES_MR_GET] = { 2681 .doit = nldev_res_get_mr_doit, 2682 .dump = nldev_res_get_mr_dumpit, 2683 }, 2684 [RDMA_NLDEV_CMD_RES_PD_GET] = { 2685 .doit = nldev_res_get_pd_doit, 2686 .dump = nldev_res_get_pd_dumpit, 2687 }, 2688 [RDMA_NLDEV_CMD_RES_CTX_GET] = { 2689 .doit = nldev_res_get_ctx_doit, 2690 .dump = nldev_res_get_ctx_dumpit, 2691 }, 2692 [RDMA_NLDEV_CMD_RES_SRQ_GET] = { 2693 .doit = nldev_res_get_srq_doit, 2694 .dump = nldev_res_get_srq_dumpit, 2695 }, 2696 [RDMA_NLDEV_CMD_SYS_GET] = { 2697 .doit = nldev_sys_get_doit, 2698 }, 2699 [RDMA_NLDEV_CMD_SYS_SET] = { 2700 .doit = nldev_set_sys_set_doit, 2701 .flags = RDMA_NL_ADMIN_PERM, 2702 }, 2703 [RDMA_NLDEV_CMD_STAT_SET] = { 2704 .doit = nldev_stat_set_doit, 2705 .flags = RDMA_NL_ADMIN_PERM, 2706 }, 2707 [RDMA_NLDEV_CMD_STAT_GET] = { 2708 .doit = nldev_stat_get_doit, 2709 .dump = nldev_stat_get_dumpit, 2710 }, 2711 [RDMA_NLDEV_CMD_STAT_DEL] = { 2712 .doit = nldev_stat_del_doit, 2713 .flags = RDMA_NL_ADMIN_PERM, 2714 }, 2715 [RDMA_NLDEV_CMD_RES_QP_GET_RAW] = { 2716 .doit = nldev_res_get_qp_raw_doit, 2717 .dump = nldev_res_get_qp_raw_dumpit, 2718 .flags = RDMA_NL_ADMIN_PERM, 2719 }, 2720 [RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = { 2721 .doit = nldev_res_get_cq_raw_doit, 2722 .dump = nldev_res_get_cq_raw_dumpit, 2723 .flags = RDMA_NL_ADMIN_PERM, 2724 }, 2725 [RDMA_NLDEV_CMD_RES_MR_GET_RAW] = { 2726 .doit = nldev_res_get_mr_raw_doit, 2727 .dump = nldev_res_get_mr_raw_dumpit, 2728 .flags = RDMA_NL_ADMIN_PERM, 2729 }, 2730 [RDMA_NLDEV_CMD_RES_SRQ_GET_RAW] = { 2731 .doit = nldev_res_get_srq_raw_doit, 2732 .dump = nldev_res_get_srq_raw_dumpit, 2733 .flags = RDMA_NL_ADMIN_PERM, 2734 }, 2735 [RDMA_NLDEV_CMD_STAT_GET_STATUS] = { 2736 .doit = nldev_stat_get_counter_status_doit, 2737 }, 2738 [RDMA_NLDEV_CMD_NEWDEV] = { 2739 .doit = nldev_newdev, 2740 .flags = RDMA_NL_ADMIN_PERM, 2741 }, 2742 [RDMA_NLDEV_CMD_DELDEV] = { 2743 .doit = nldev_deldev, 2744 .flags = RDMA_NL_ADMIN_PERM, 2745 }, 2746}; 2747 2748static int fill_mon_netdev_rename(struct sk_buff *msg, 2749 struct ib_device *device, u32 port, 2750 const struct net *net) 2751{ 2752 struct net_device *netdev = ib_device_get_netdev(device, port); 2753 int ret = 0; 2754 2755 if (!netdev || !net_eq(dev_net(netdev), net)) 2756 goto out; 2757 2758 ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex); 2759 if (ret) 2760 goto out; 2761 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name); 2762out: 2763 dev_put(netdev); 2764 return ret; 2765} 2766 2767static int fill_mon_netdev_association(struct sk_buff *msg, 2768 struct ib_device *device, u32 port, 2769 const struct net *net) 2770{ 2771 struct net_device *netdev = ib_device_get_netdev(device, port); 2772 int ret = 0; 2773 2774 if (netdev && !net_eq(dev_net(netdev), net)) 2775 goto out; 2776 2777 ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index); 2778 if (ret) 2779 goto out; 2780 2781 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, 2782 dev_name(&device->dev)); 2783 if (ret) 2784 goto out; 2785 2786 ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port); 2787 if (ret) 2788 goto out; 2789 2790 if (netdev) { 2791 ret = nla_put_u32(msg, 2792 RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex); 2793 if (ret) 2794 goto out; 2795 2796 ret = nla_put_string(msg, 2797 RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name); 2798 } 2799 2800out: 2801 dev_put(netdev); 2802 return ret; 2803} 2804 2805static void rdma_nl_notify_err_msg(struct ib_device *device, u32 port_num, 2806 enum rdma_nl_notify_event_type type) 2807{ 2808 struct net_device *netdev; 2809 2810 switch (type) { 2811 case RDMA_REGISTER_EVENT: 2812 dev_warn_ratelimited(&device->dev, 2813 "Failed to send RDMA monitor register device event\n"); 2814 break; 2815 case RDMA_UNREGISTER_EVENT: 2816 dev_warn_ratelimited(&device->dev, 2817 "Failed to send RDMA monitor unregister device event\n"); 2818 break; 2819 case RDMA_NETDEV_ATTACH_EVENT: 2820 netdev = ib_device_get_netdev(device, port_num); 2821 dev_warn_ratelimited(&device->dev, 2822 "Failed to send RDMA monitor netdev attach event: port %d netdev %d\n", 2823 port_num, netdev->ifindex); 2824 dev_put(netdev); 2825 break; 2826 case RDMA_NETDEV_DETACH_EVENT: 2827 dev_warn_ratelimited(&device->dev, 2828 "Failed to send RDMA monitor netdev detach event: port %d\n", 2829 port_num); 2830 break; 2831 case RDMA_RENAME_EVENT: 2832 dev_warn_ratelimited(&device->dev, 2833 "Failed to send RDMA monitor rename device event\n"); 2834 break; 2835 2836 case RDMA_NETDEV_RENAME_EVENT: 2837 netdev = ib_device_get_netdev(device, port_num); 2838 dev_warn_ratelimited(&device->dev, 2839 "Failed to send RDMA monitor netdev rename event: port %d netdev %d\n", 2840 port_num, netdev->ifindex); 2841 dev_put(netdev); 2842 break; 2843 default: 2844 break; 2845 } 2846} 2847 2848int rdma_nl_notify_event(struct ib_device *device, u32 port_num, 2849 enum rdma_nl_notify_event_type type) 2850{ 2851 struct sk_buff *skb; 2852 int ret = -EMSGSIZE; 2853 struct net *net; 2854 void *nlh; 2855 2856 net = read_pnet(&device->coredev.rdma_net); 2857 if (!net) 2858 return -EINVAL; 2859 2860 skb = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2861 if (!skb) 2862 return -ENOMEM; 2863 nlh = nlmsg_put(skb, 0, 0, 2864 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_MONITOR), 2865 0, 0); 2866 if (!nlh) 2867 goto err_free; 2868 2869 switch (type) { 2870 case RDMA_REGISTER_EVENT: 2871 case RDMA_UNREGISTER_EVENT: 2872 case RDMA_RENAME_EVENT: 2873 ret = fill_nldev_handle(skb, device); 2874 if (ret) 2875 goto err_free; 2876 break; 2877 case RDMA_NETDEV_ATTACH_EVENT: 2878 case RDMA_NETDEV_DETACH_EVENT: 2879 ret = fill_mon_netdev_association(skb, device, port_num, net); 2880 if (ret) 2881 goto err_free; 2882 break; 2883 case RDMA_NETDEV_RENAME_EVENT: 2884 ret = fill_mon_netdev_rename(skb, device, port_num, net); 2885 if (ret) 2886 goto err_free; 2887 break; 2888 default: 2889 break; 2890 } 2891 2892 ret = nla_put_u8(skb, RDMA_NLDEV_ATTR_EVENT_TYPE, type); 2893 if (ret) 2894 goto err_free; 2895 2896 nlmsg_end(skb, nlh); 2897 ret = rdma_nl_multicast(net, skb, RDMA_NL_GROUP_NOTIFY, GFP_KERNEL); 2898 if (ret && ret != -ESRCH) { 2899 skb = NULL; /* skb is freed in the netlink send-op handling */ 2900 goto err_free; 2901 } 2902 return 0; 2903 2904err_free: 2905 rdma_nl_notify_err_msg(device, port_num, type); 2906 nlmsg_free(skb); 2907 return ret; 2908} 2909 2910void __init nldev_init(void) 2911{ 2912 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table); 2913} 2914 2915void nldev_exit(void) 2916{ 2917 rdma_nl_unregister(RDMA_NL_NLDEV); 2918} 2919 2920MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5);
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