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 typedef int (*res_fill_func_t)(struct sk_buff*, bool, 47 struct rdma_restrack_entry*, uint32_t); 48 49 /* 50 * Sort array elements by the netlink attribute name 51 */ 52 static const struct nla_policy nldev_policy[RDMA_NLDEV_ATTR_MAX] = { 53 [RDMA_NLDEV_ATTR_CHARDEV] = { .type = NLA_U64 }, 54 [RDMA_NLDEV_ATTR_CHARDEV_ABI] = { .type = NLA_U64 }, 55 [RDMA_NLDEV_ATTR_CHARDEV_NAME] = { .type = NLA_NUL_STRING, 56 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 57 [RDMA_NLDEV_ATTR_CHARDEV_TYPE] = { .type = NLA_NUL_STRING, 58 .len = RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE }, 59 [RDMA_NLDEV_ATTR_DEV_DIM] = { .type = NLA_U8 }, 60 [RDMA_NLDEV_ATTR_DEV_INDEX] = { .type = NLA_U32 }, 61 [RDMA_NLDEV_ATTR_DEV_NAME] = { .type = NLA_NUL_STRING, 62 .len = IB_DEVICE_NAME_MAX }, 63 [RDMA_NLDEV_ATTR_DEV_NODE_TYPE] = { .type = NLA_U8 }, 64 [RDMA_NLDEV_ATTR_DEV_PROTOCOL] = { .type = NLA_NUL_STRING, 65 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 66 [RDMA_NLDEV_ATTR_DRIVER] = { .type = NLA_NESTED }, 67 [RDMA_NLDEV_ATTR_DRIVER_ENTRY] = { .type = NLA_NESTED }, 68 [RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE] = { .type = NLA_U8 }, 69 [RDMA_NLDEV_ATTR_DRIVER_STRING] = { .type = NLA_NUL_STRING, 70 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 71 [RDMA_NLDEV_ATTR_DRIVER_S32] = { .type = NLA_S32 }, 72 [RDMA_NLDEV_ATTR_DRIVER_S64] = { .type = NLA_S64 }, 73 [RDMA_NLDEV_ATTR_DRIVER_U32] = { .type = NLA_U32 }, 74 [RDMA_NLDEV_ATTR_DRIVER_U64] = { .type = NLA_U64 }, 75 [RDMA_NLDEV_ATTR_FW_VERSION] = { .type = NLA_NUL_STRING, 76 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 77 [RDMA_NLDEV_ATTR_LID] = { .type = NLA_U32 }, 78 [RDMA_NLDEV_ATTR_LINK_TYPE] = { .type = NLA_NUL_STRING, 79 .len = IFNAMSIZ }, 80 [RDMA_NLDEV_ATTR_LMC] = { .type = NLA_U8 }, 81 [RDMA_NLDEV_ATTR_NDEV_INDEX] = { .type = NLA_U32 }, 82 [RDMA_NLDEV_ATTR_NDEV_NAME] = { .type = NLA_NUL_STRING, 83 .len = IFNAMSIZ }, 84 [RDMA_NLDEV_ATTR_NODE_GUID] = { .type = NLA_U64 }, 85 [RDMA_NLDEV_ATTR_PORT_INDEX] = { .type = NLA_U32 }, 86 [RDMA_NLDEV_ATTR_PORT_PHYS_STATE] = { .type = NLA_U8 }, 87 [RDMA_NLDEV_ATTR_PORT_STATE] = { .type = NLA_U8 }, 88 [RDMA_NLDEV_ATTR_RES_CM_ID] = { .type = NLA_NESTED }, 89 [RDMA_NLDEV_ATTR_RES_CM_IDN] = { .type = NLA_U32 }, 90 [RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY] = { .type = NLA_NESTED }, 91 [RDMA_NLDEV_ATTR_RES_CQ] = { .type = NLA_NESTED }, 92 [RDMA_NLDEV_ATTR_RES_CQE] = { .type = NLA_U32 }, 93 [RDMA_NLDEV_ATTR_RES_CQN] = { .type = NLA_U32 }, 94 [RDMA_NLDEV_ATTR_RES_CQ_ENTRY] = { .type = NLA_NESTED }, 95 [RDMA_NLDEV_ATTR_RES_CTX] = { .type = NLA_NESTED }, 96 [RDMA_NLDEV_ATTR_RES_CTXN] = { .type = NLA_U32 }, 97 [RDMA_NLDEV_ATTR_RES_CTX_ENTRY] = { .type = NLA_NESTED }, 98 [RDMA_NLDEV_ATTR_RES_DST_ADDR] = { 99 .len = sizeof(struct __kernel_sockaddr_storage) }, 100 [RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 }, 101 [RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING, 102 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 103 [RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 }, 104 [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 }, 105 [RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 }, 106 [RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED }, 107 [RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 }, 108 [RDMA_NLDEV_ATTR_RES_MRN] = { .type = NLA_U32 }, 109 [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED }, 110 [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 }, 111 [RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED }, 112 [RDMA_NLDEV_ATTR_RES_PDN] = { .type = NLA_U32 }, 113 [RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED }, 114 [RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 }, 115 [RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 }, 116 [RDMA_NLDEV_ATTR_RES_PS] = { .type = NLA_U32 }, 117 [RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED }, 118 [RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED }, 119 [RDMA_NLDEV_ATTR_RES_RAW] = { .type = NLA_BINARY }, 120 [RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 }, 121 [RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 }, 122 [RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 }, 123 [RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 }, 124 [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = { 125 .len = sizeof(struct __kernel_sockaddr_storage) }, 126 [RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 }, 127 [RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED }, 128 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED }, 129 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]= { .type = NLA_U64 }, 130 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING, 131 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 132 [RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 }, 133 [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 }, 134 [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 }, 135 [RDMA_NLDEV_ATTR_RES_SRQ] = { .type = NLA_NESTED }, 136 [RDMA_NLDEV_ATTR_RES_SRQN] = { .type = NLA_U32 }, 137 [RDMA_NLDEV_ATTR_RES_SRQ_ENTRY] = { .type = NLA_NESTED }, 138 [RDMA_NLDEV_ATTR_MIN_RANGE] = { .type = NLA_U32 }, 139 [RDMA_NLDEV_ATTR_MAX_RANGE] = { .type = NLA_U32 }, 140 [RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 }, 141 [RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 }, 142 [RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 }, 143 [RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 }, 144 [RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 }, 145 [RDMA_NLDEV_ATTR_STAT_COUNTER] = { .type = NLA_NESTED }, 146 [RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = { .type = NLA_NESTED }, 147 [RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = { .type = NLA_U32 }, 148 [RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = { .type = NLA_NESTED }, 149 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = { .type = NLA_NESTED }, 150 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = { .type = NLA_NUL_STRING }, 151 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = { .type = NLA_U64 }, 152 [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 }, 153 [RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 }, 154 [RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 }, 155 [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 }, 156 [RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK] = { .type = NLA_U8 }, 157 }; 158 159 static int put_driver_name_print_type(struct sk_buff *msg, const char *name, 160 enum rdma_nldev_print_type print_type) 161 { 162 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name)) 163 return -EMSGSIZE; 164 if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC && 165 nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type)) 166 return -EMSGSIZE; 167 168 return 0; 169 } 170 171 static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, 172 enum rdma_nldev_print_type print_type, 173 u32 value) 174 { 175 if (put_driver_name_print_type(msg, name, print_type)) 176 return -EMSGSIZE; 177 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value)) 178 return -EMSGSIZE; 179 180 return 0; 181 } 182 183 static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, 184 enum rdma_nldev_print_type print_type, 185 u64 value) 186 { 187 if (put_driver_name_print_type(msg, name, print_type)) 188 return -EMSGSIZE; 189 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value, 190 RDMA_NLDEV_ATTR_PAD)) 191 return -EMSGSIZE; 192 193 return 0; 194 } 195 196 int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name, 197 const char *str) 198 { 199 if (put_driver_name_print_type(msg, name, 200 RDMA_NLDEV_PRINT_TYPE_UNSPEC)) 201 return -EMSGSIZE; 202 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, str)) 203 return -EMSGSIZE; 204 205 return 0; 206 } 207 EXPORT_SYMBOL(rdma_nl_put_driver_string); 208 209 int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value) 210 { 211 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC, 212 value); 213 } 214 EXPORT_SYMBOL(rdma_nl_put_driver_u32); 215 216 int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name, 217 u32 value) 218 { 219 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX, 220 value); 221 } 222 EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex); 223 224 int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value) 225 { 226 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC, 227 value); 228 } 229 EXPORT_SYMBOL(rdma_nl_put_driver_u64); 230 231 int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value) 232 { 233 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX, 234 value); 235 } 236 EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex); 237 238 static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device) 239 { 240 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index)) 241 return -EMSGSIZE; 242 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, 243 dev_name(&device->dev))) 244 return -EMSGSIZE; 245 246 return 0; 247 } 248 249 static int fill_dev_info(struct sk_buff *msg, struct ib_device *device) 250 { 251 char fw[IB_FW_VERSION_NAME_MAX]; 252 int ret = 0; 253 u32 port; 254 255 if (fill_nldev_handle(msg, device)) 256 return -EMSGSIZE; 257 258 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device))) 259 return -EMSGSIZE; 260 261 BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64)); 262 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, 263 device->attrs.device_cap_flags, 264 RDMA_NLDEV_ATTR_PAD)) 265 return -EMSGSIZE; 266 267 ib_get_device_fw_str(device, fw); 268 /* Device without FW has strlen(fw) = 0 */ 269 if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw)) 270 return -EMSGSIZE; 271 272 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID, 273 be64_to_cpu(device->node_guid), 274 RDMA_NLDEV_ATTR_PAD)) 275 return -EMSGSIZE; 276 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID, 277 be64_to_cpu(device->attrs.sys_image_guid), 278 RDMA_NLDEV_ATTR_PAD)) 279 return -EMSGSIZE; 280 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type)) 281 return -EMSGSIZE; 282 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, device->use_cq_dim)) 283 return -EMSGSIZE; 284 285 /* 286 * Link type is determined on first port and mlx4 device 287 * which can potentially have two different link type for the same 288 * IB device is considered as better to be avoided in the future, 289 */ 290 port = rdma_start_port(device); 291 if (rdma_cap_opa_mad(device, port)) 292 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "opa"); 293 else if (rdma_protocol_ib(device, port)) 294 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "ib"); 295 else if (rdma_protocol_iwarp(device, port)) 296 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "iw"); 297 else if (rdma_protocol_roce(device, port)) 298 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "roce"); 299 else if (rdma_protocol_usnic(device, port)) 300 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, 301 "usnic"); 302 return ret; 303 } 304 305 static int fill_port_info(struct sk_buff *msg, 306 struct ib_device *device, u32 port, 307 const struct net *net) 308 { 309 struct net_device *netdev = NULL; 310 struct ib_port_attr attr; 311 int ret; 312 u64 cap_flags = 0; 313 314 if (fill_nldev_handle(msg, device)) 315 return -EMSGSIZE; 316 317 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) 318 return -EMSGSIZE; 319 320 ret = ib_query_port(device, port, &attr); 321 if (ret) 322 return ret; 323 324 if (rdma_protocol_ib(device, port)) { 325 BUILD_BUG_ON((sizeof(attr.port_cap_flags) + 326 sizeof(attr.port_cap_flags2)) > sizeof(u64)); 327 cap_flags = attr.port_cap_flags | 328 ((u64)attr.port_cap_flags2 << 32); 329 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, 330 cap_flags, RDMA_NLDEV_ATTR_PAD)) 331 return -EMSGSIZE; 332 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX, 333 attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD)) 334 return -EMSGSIZE; 335 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid)) 336 return -EMSGSIZE; 337 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid)) 338 return -EMSGSIZE; 339 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc)) 340 return -EMSGSIZE; 341 } 342 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state)) 343 return -EMSGSIZE; 344 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state)) 345 return -EMSGSIZE; 346 347 netdev = ib_device_get_netdev(device, port); 348 if (netdev && net_eq(dev_net(netdev), net)) { 349 ret = nla_put_u32(msg, 350 RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex); 351 if (ret) 352 goto out; 353 ret = nla_put_string(msg, 354 RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name); 355 } 356 357 out: 358 if (netdev) 359 dev_put(netdev); 360 return ret; 361 } 362 363 static int fill_res_info_entry(struct sk_buff *msg, 364 const char *name, u64 curr) 365 { 366 struct nlattr *entry_attr; 367 368 entry_attr = nla_nest_start_noflag(msg, 369 RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY); 370 if (!entry_attr) 371 return -EMSGSIZE; 372 373 if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name)) 374 goto err; 375 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr, 376 RDMA_NLDEV_ATTR_PAD)) 377 goto err; 378 379 nla_nest_end(msg, entry_attr); 380 return 0; 381 382 err: 383 nla_nest_cancel(msg, entry_attr); 384 return -EMSGSIZE; 385 } 386 387 static int fill_res_info(struct sk_buff *msg, struct ib_device *device) 388 { 389 static const char * const names[RDMA_RESTRACK_MAX] = { 390 [RDMA_RESTRACK_PD] = "pd", 391 [RDMA_RESTRACK_CQ] = "cq", 392 [RDMA_RESTRACK_QP] = "qp", 393 [RDMA_RESTRACK_CM_ID] = "cm_id", 394 [RDMA_RESTRACK_MR] = "mr", 395 [RDMA_RESTRACK_CTX] = "ctx", 396 [RDMA_RESTRACK_SRQ] = "srq", 397 }; 398 399 struct nlattr *table_attr; 400 int ret, i, curr; 401 402 if (fill_nldev_handle(msg, device)) 403 return -EMSGSIZE; 404 405 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_RES_SUMMARY); 406 if (!table_attr) 407 return -EMSGSIZE; 408 409 for (i = 0; i < RDMA_RESTRACK_MAX; i++) { 410 if (!names[i]) 411 continue; 412 curr = rdma_restrack_count(device, i); 413 ret = fill_res_info_entry(msg, names[i], curr); 414 if (ret) 415 goto err; 416 } 417 418 nla_nest_end(msg, table_attr); 419 return 0; 420 421 err: 422 nla_nest_cancel(msg, table_attr); 423 return ret; 424 } 425 426 static int fill_res_name_pid(struct sk_buff *msg, 427 struct rdma_restrack_entry *res) 428 { 429 int err = 0; 430 431 /* 432 * For user resources, user is should read /proc/PID/comm to get the 433 * name of the task file. 434 */ 435 if (rdma_is_kernel_res(res)) { 436 err = nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME, 437 res->kern_name); 438 } else { 439 pid_t pid; 440 441 pid = task_pid_vnr(res->task); 442 /* 443 * Task is dead and in zombie state. 444 * There is no need to print PID anymore. 445 */ 446 if (pid) 447 /* 448 * This part is racy, task can be killed and PID will 449 * be zero right here but it is ok, next query won't 450 * return PID. We don't promise real-time reflection 451 * of SW objects. 452 */ 453 err = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID, pid); 454 } 455 456 return err ? -EMSGSIZE : 0; 457 } 458 459 static int fill_res_qp_entry_query(struct sk_buff *msg, 460 struct rdma_restrack_entry *res, 461 struct ib_device *dev, 462 struct ib_qp *qp) 463 { 464 struct ib_qp_init_attr qp_init_attr; 465 struct ib_qp_attr qp_attr; 466 int ret; 467 468 ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr); 469 if (ret) 470 return ret; 471 472 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) { 473 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN, 474 qp_attr.dest_qp_num)) 475 goto err; 476 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN, 477 qp_attr.rq_psn)) 478 goto err; 479 } 480 481 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn)) 482 goto err; 483 484 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC || 485 qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) { 486 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE, 487 qp_attr.path_mig_state)) 488 goto err; 489 } 490 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type)) 491 goto err; 492 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state)) 493 goto err; 494 495 if (dev->ops.fill_res_qp_entry) 496 return dev->ops.fill_res_qp_entry(msg, qp); 497 return 0; 498 499 err: return -EMSGSIZE; 500 } 501 502 static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin, 503 struct rdma_restrack_entry *res, uint32_t port) 504 { 505 struct ib_qp *qp = container_of(res, struct ib_qp, res); 506 struct ib_device *dev = qp->device; 507 int ret; 508 509 if (port && port != qp->port) 510 return -EAGAIN; 511 512 /* In create_qp() port is not set yet */ 513 if (qp->port && nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp->port)) 514 return -EINVAL; 515 516 ret = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num); 517 if (ret) 518 return -EMSGSIZE; 519 520 if (!rdma_is_kernel_res(res) && 521 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id)) 522 return -EMSGSIZE; 523 524 ret = fill_res_name_pid(msg, res); 525 if (ret) 526 return -EMSGSIZE; 527 528 return fill_res_qp_entry_query(msg, res, dev, qp); 529 } 530 531 static int fill_res_qp_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 532 struct rdma_restrack_entry *res, uint32_t port) 533 { 534 struct ib_qp *qp = container_of(res, struct ib_qp, res); 535 struct ib_device *dev = qp->device; 536 537 if (port && port != qp->port) 538 return -EAGAIN; 539 if (!dev->ops.fill_res_qp_entry_raw) 540 return -EINVAL; 541 return dev->ops.fill_res_qp_entry_raw(msg, qp); 542 } 543 544 static int fill_res_cm_id_entry(struct sk_buff *msg, bool has_cap_net_admin, 545 struct rdma_restrack_entry *res, uint32_t port) 546 { 547 struct rdma_id_private *id_priv = 548 container_of(res, struct rdma_id_private, res); 549 struct ib_device *dev = id_priv->id.device; 550 struct rdma_cm_id *cm_id = &id_priv->id; 551 552 if (port && port != cm_id->port_num) 553 return 0; 554 555 if (cm_id->port_num && 556 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num)) 557 goto err; 558 559 if (id_priv->qp_num) { 560 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num)) 561 goto err; 562 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type)) 563 goto err; 564 } 565 566 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps)) 567 goto err; 568 569 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state)) 570 goto err; 571 572 if (cm_id->route.addr.src_addr.ss_family && 573 nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR, 574 sizeof(cm_id->route.addr.src_addr), 575 &cm_id->route.addr.src_addr)) 576 goto err; 577 if (cm_id->route.addr.dst_addr.ss_family && 578 nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR, 579 sizeof(cm_id->route.addr.dst_addr), 580 &cm_id->route.addr.dst_addr)) 581 goto err; 582 583 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CM_IDN, res->id)) 584 goto err; 585 586 if (fill_res_name_pid(msg, res)) 587 goto err; 588 589 if (dev->ops.fill_res_cm_id_entry) 590 return dev->ops.fill_res_cm_id_entry(msg, cm_id); 591 return 0; 592 593 err: return -EMSGSIZE; 594 } 595 596 static int fill_res_cq_entry(struct sk_buff *msg, bool has_cap_net_admin, 597 struct rdma_restrack_entry *res, uint32_t port) 598 { 599 struct ib_cq *cq = container_of(res, struct ib_cq, res); 600 struct ib_device *dev = cq->device; 601 602 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe)) 603 return -EMSGSIZE; 604 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, 605 atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD)) 606 return -EMSGSIZE; 607 608 /* Poll context is only valid for kernel CQs */ 609 if (rdma_is_kernel_res(res) && 610 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx)) 611 return -EMSGSIZE; 612 613 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL))) 614 return -EMSGSIZE; 615 616 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id)) 617 return -EMSGSIZE; 618 if (!rdma_is_kernel_res(res) && 619 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, 620 cq->uobject->uevent.uobject.context->res.id)) 621 return -EMSGSIZE; 622 623 if (fill_res_name_pid(msg, res)) 624 return -EMSGSIZE; 625 626 return (dev->ops.fill_res_cq_entry) ? 627 dev->ops.fill_res_cq_entry(msg, cq) : 0; 628 } 629 630 static int fill_res_cq_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 631 struct rdma_restrack_entry *res, uint32_t port) 632 { 633 struct ib_cq *cq = container_of(res, struct ib_cq, res); 634 struct ib_device *dev = cq->device; 635 636 if (!dev->ops.fill_res_cq_entry_raw) 637 return -EINVAL; 638 return dev->ops.fill_res_cq_entry_raw(msg, cq); 639 } 640 641 static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin, 642 struct rdma_restrack_entry *res, uint32_t port) 643 { 644 struct ib_mr *mr = container_of(res, struct ib_mr, res); 645 struct ib_device *dev = mr->pd->device; 646 647 if (has_cap_net_admin) { 648 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey)) 649 return -EMSGSIZE; 650 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey)) 651 return -EMSGSIZE; 652 } 653 654 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length, 655 RDMA_NLDEV_ATTR_PAD)) 656 return -EMSGSIZE; 657 658 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) 659 return -EMSGSIZE; 660 661 if (!rdma_is_kernel_res(res) && 662 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id)) 663 return -EMSGSIZE; 664 665 if (fill_res_name_pid(msg, res)) 666 return -EMSGSIZE; 667 668 return (dev->ops.fill_res_mr_entry) ? 669 dev->ops.fill_res_mr_entry(msg, mr) : 670 0; 671 } 672 673 static int fill_res_mr_raw_entry(struct sk_buff *msg, bool has_cap_net_admin, 674 struct rdma_restrack_entry *res, uint32_t port) 675 { 676 struct ib_mr *mr = container_of(res, struct ib_mr, res); 677 struct ib_device *dev = mr->pd->device; 678 679 if (!dev->ops.fill_res_mr_entry_raw) 680 return -EINVAL; 681 return dev->ops.fill_res_mr_entry_raw(msg, mr); 682 } 683 684 static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin, 685 struct rdma_restrack_entry *res, uint32_t port) 686 { 687 struct ib_pd *pd = container_of(res, struct ib_pd, res); 688 689 if (has_cap_net_admin) { 690 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY, 691 pd->local_dma_lkey)) 692 goto err; 693 if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) && 694 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY, 695 pd->unsafe_global_rkey)) 696 goto err; 697 } 698 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, 699 atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD)) 700 goto err; 701 702 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, res->id)) 703 goto err; 704 705 if (!rdma_is_kernel_res(res) && 706 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, 707 pd->uobject->context->res.id)) 708 goto err; 709 710 return fill_res_name_pid(msg, res); 711 712 err: return -EMSGSIZE; 713 } 714 715 static int fill_res_ctx_entry(struct sk_buff *msg, bool has_cap_net_admin, 716 struct rdma_restrack_entry *res, uint32_t port) 717 { 718 struct ib_ucontext *ctx = container_of(res, struct ib_ucontext, res); 719 720 if (rdma_is_kernel_res(res)) 721 return 0; 722 723 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, ctx->res.id)) 724 return -EMSGSIZE; 725 726 return fill_res_name_pid(msg, res); 727 } 728 729 static int fill_res_range_qp_entry(struct sk_buff *msg, uint32_t min_range, 730 uint32_t max_range) 731 { 732 struct nlattr *entry_attr; 733 734 if (!min_range) 735 return 0; 736 737 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY); 738 if (!entry_attr) 739 return -EMSGSIZE; 740 741 if (min_range == max_range) { 742 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, min_range)) 743 goto err; 744 } else { 745 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MIN_RANGE, min_range)) 746 goto err; 747 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_MAX_RANGE, max_range)) 748 goto err; 749 } 750 nla_nest_end(msg, entry_attr); 751 return 0; 752 753 err: 754 nla_nest_cancel(msg, entry_attr); 755 return -EMSGSIZE; 756 } 757 758 static int fill_res_srq_qps(struct sk_buff *msg, struct ib_srq *srq) 759 { 760 uint32_t min_range = 0, prev = 0; 761 struct rdma_restrack_entry *res; 762 struct rdma_restrack_root *rt; 763 struct nlattr *table_attr; 764 struct ib_qp *qp = NULL; 765 unsigned long id = 0; 766 767 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP); 768 if (!table_attr) 769 return -EMSGSIZE; 770 771 rt = &srq->device->res[RDMA_RESTRACK_QP]; 772 xa_lock(&rt->xa); 773 xa_for_each(&rt->xa, id, res) { 774 if (!rdma_restrack_get(res)) 775 continue; 776 777 qp = container_of(res, struct ib_qp, res); 778 if (!qp->srq || (qp->srq->res.id != srq->res.id)) { 779 rdma_restrack_put(res); 780 continue; 781 } 782 783 if (qp->qp_num < prev) 784 /* qp_num should be ascending */ 785 goto err_loop; 786 787 if (min_range == 0) { 788 min_range = qp->qp_num; 789 } else if (qp->qp_num > (prev + 1)) { 790 if (fill_res_range_qp_entry(msg, min_range, prev)) 791 goto err_loop; 792 793 min_range = qp->qp_num; 794 } 795 prev = qp->qp_num; 796 rdma_restrack_put(res); 797 } 798 799 xa_unlock(&rt->xa); 800 801 if (fill_res_range_qp_entry(msg, min_range, prev)) 802 goto err; 803 804 nla_nest_end(msg, table_attr); 805 return 0; 806 807 err_loop: 808 rdma_restrack_put(res); 809 xa_unlock(&rt->xa); 810 err: 811 nla_nest_cancel(msg, table_attr); 812 return -EMSGSIZE; 813 } 814 815 static int fill_res_srq_entry(struct sk_buff *msg, bool has_cap_net_admin, 816 struct rdma_restrack_entry *res, uint32_t port) 817 { 818 struct ib_srq *srq = container_of(res, struct ib_srq, res); 819 820 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SRQN, srq->res.id)) 821 goto err; 822 823 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, srq->srq_type)) 824 goto err; 825 826 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, srq->pd->res.id)) 827 goto err; 828 829 if (ib_srq_has_cq(srq->srq_type)) { 830 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, 831 srq->ext.cq->res.id)) 832 goto err; 833 } 834 835 if (fill_res_srq_qps(msg, srq)) 836 goto err; 837 838 return fill_res_name_pid(msg, res); 839 840 err: 841 return -EMSGSIZE; 842 } 843 844 static int fill_stat_counter_mode(struct sk_buff *msg, 845 struct rdma_counter *counter) 846 { 847 struct rdma_counter_mode *m = &counter->mode; 848 849 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode)) 850 return -EMSGSIZE; 851 852 if (m->mode == RDMA_COUNTER_MODE_AUTO) { 853 if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) && 854 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type)) 855 return -EMSGSIZE; 856 857 if ((m->mask & RDMA_COUNTER_MASK_PID) && 858 fill_res_name_pid(msg, &counter->res)) 859 return -EMSGSIZE; 860 } 861 862 return 0; 863 } 864 865 static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn) 866 { 867 struct nlattr *entry_attr; 868 869 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY); 870 if (!entry_attr) 871 return -EMSGSIZE; 872 873 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) 874 goto err; 875 876 nla_nest_end(msg, entry_attr); 877 return 0; 878 879 err: 880 nla_nest_cancel(msg, entry_attr); 881 return -EMSGSIZE; 882 } 883 884 static int fill_stat_counter_qps(struct sk_buff *msg, 885 struct rdma_counter *counter) 886 { 887 struct rdma_restrack_entry *res; 888 struct rdma_restrack_root *rt; 889 struct nlattr *table_attr; 890 struct ib_qp *qp = NULL; 891 unsigned long id = 0; 892 int ret = 0; 893 894 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP); 895 896 rt = &counter->device->res[RDMA_RESTRACK_QP]; 897 xa_lock(&rt->xa); 898 xa_for_each(&rt->xa, id, res) { 899 qp = container_of(res, struct ib_qp, res); 900 if (!qp->counter || (qp->counter->id != counter->id)) 901 continue; 902 903 ret = fill_stat_counter_qp_entry(msg, qp->qp_num); 904 if (ret) 905 goto err; 906 } 907 908 xa_unlock(&rt->xa); 909 nla_nest_end(msg, table_attr); 910 return 0; 911 912 err: 913 xa_unlock(&rt->xa); 914 nla_nest_cancel(msg, table_attr); 915 return ret; 916 } 917 918 int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name, 919 u64 value) 920 { 921 struct nlattr *entry_attr; 922 923 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY); 924 if (!entry_attr) 925 return -EMSGSIZE; 926 927 if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, 928 name)) 929 goto err; 930 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE, 931 value, RDMA_NLDEV_ATTR_PAD)) 932 goto err; 933 934 nla_nest_end(msg, entry_attr); 935 return 0; 936 937 err: 938 nla_nest_cancel(msg, entry_attr); 939 return -EMSGSIZE; 940 } 941 EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry); 942 943 static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin, 944 struct rdma_restrack_entry *res, uint32_t port) 945 { 946 struct ib_mr *mr = container_of(res, struct ib_mr, res); 947 struct ib_device *dev = mr->pd->device; 948 949 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) 950 goto err; 951 952 if (dev->ops.fill_stat_mr_entry) 953 return dev->ops.fill_stat_mr_entry(msg, mr); 954 return 0; 955 956 err: 957 return -EMSGSIZE; 958 } 959 960 static int fill_stat_counter_hwcounters(struct sk_buff *msg, 961 struct rdma_counter *counter) 962 { 963 struct rdma_hw_stats *st = counter->stats; 964 struct nlattr *table_attr; 965 int i; 966 967 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 968 if (!table_attr) 969 return -EMSGSIZE; 970 971 for (i = 0; i < st->num_counters; i++) 972 if (rdma_nl_stat_hwcounter_entry(msg, st->names[i], st->value[i])) 973 goto err; 974 975 nla_nest_end(msg, table_attr); 976 return 0; 977 978 err: 979 nla_nest_cancel(msg, table_attr); 980 return -EMSGSIZE; 981 } 982 983 static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin, 984 struct rdma_restrack_entry *res, 985 uint32_t port) 986 { 987 struct rdma_counter *counter = 988 container_of(res, struct rdma_counter, res); 989 990 if (port && port != counter->port) 991 return -EAGAIN; 992 993 /* Dump it even query failed */ 994 rdma_counter_query_stats(counter); 995 996 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) || 997 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) || 998 fill_stat_counter_mode(msg, counter) || 999 fill_stat_counter_qps(msg, counter) || 1000 fill_stat_counter_hwcounters(msg, counter)) 1001 return -EMSGSIZE; 1002 1003 return 0; 1004 } 1005 1006 static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1007 struct netlink_ext_ack *extack) 1008 { 1009 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1010 struct ib_device *device; 1011 struct sk_buff *msg; 1012 u32 index; 1013 int err; 1014 1015 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1016 nldev_policy, extack); 1017 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1018 return -EINVAL; 1019 1020 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1021 1022 device = ib_device_get_by_index(sock_net(skb->sk), index); 1023 if (!device) 1024 return -EINVAL; 1025 1026 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1027 if (!msg) { 1028 err = -ENOMEM; 1029 goto err; 1030 } 1031 1032 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1033 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1034 0, 0); 1035 1036 err = fill_dev_info(msg, device); 1037 if (err) 1038 goto err_free; 1039 1040 nlmsg_end(msg, nlh); 1041 1042 ib_device_put(device); 1043 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1044 1045 err_free: 1046 nlmsg_free(msg); 1047 err: 1048 ib_device_put(device); 1049 return err; 1050 } 1051 1052 static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1053 struct netlink_ext_ack *extack) 1054 { 1055 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1056 struct ib_device *device; 1057 u32 index; 1058 int err; 1059 1060 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1061 nldev_policy, extack); 1062 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1063 return -EINVAL; 1064 1065 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1066 device = ib_device_get_by_index(sock_net(skb->sk), index); 1067 if (!device) 1068 return -EINVAL; 1069 1070 if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) { 1071 char name[IB_DEVICE_NAME_MAX] = {}; 1072 1073 nla_strscpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 1074 IB_DEVICE_NAME_MAX); 1075 if (strlen(name) == 0) { 1076 err = -EINVAL; 1077 goto done; 1078 } 1079 err = ib_device_rename(device, name); 1080 goto done; 1081 } 1082 1083 if (tb[RDMA_NLDEV_NET_NS_FD]) { 1084 u32 ns_fd; 1085 1086 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]); 1087 err = ib_device_set_netns_put(skb, device, ns_fd); 1088 goto put_done; 1089 } 1090 1091 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) { 1092 u8 use_dim; 1093 1094 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]); 1095 err = ib_device_set_dim(device, use_dim); 1096 goto done; 1097 } 1098 1099 done: 1100 ib_device_put(device); 1101 put_done: 1102 return err; 1103 } 1104 1105 static int _nldev_get_dumpit(struct ib_device *device, 1106 struct sk_buff *skb, 1107 struct netlink_callback *cb, 1108 unsigned int idx) 1109 { 1110 int start = cb->args[0]; 1111 struct nlmsghdr *nlh; 1112 1113 if (idx < start) 1114 return 0; 1115 1116 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1117 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1118 0, NLM_F_MULTI); 1119 1120 if (fill_dev_info(skb, device)) { 1121 nlmsg_cancel(skb, nlh); 1122 goto out; 1123 } 1124 1125 nlmsg_end(skb, nlh); 1126 1127 idx++; 1128 1129 out: cb->args[0] = idx; 1130 return skb->len; 1131 } 1132 1133 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) 1134 { 1135 /* 1136 * There is no need to take lock, because 1137 * we are relying on ib_core's locking. 1138 */ 1139 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb); 1140 } 1141 1142 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1143 struct netlink_ext_ack *extack) 1144 { 1145 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1146 struct ib_device *device; 1147 struct sk_buff *msg; 1148 u32 index; 1149 u32 port; 1150 int err; 1151 1152 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1153 nldev_policy, extack); 1154 if (err || 1155 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 1156 !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1157 return -EINVAL; 1158 1159 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1160 device = ib_device_get_by_index(sock_net(skb->sk), index); 1161 if (!device) 1162 return -EINVAL; 1163 1164 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1165 if (!rdma_is_port_valid(device, port)) { 1166 err = -EINVAL; 1167 goto err; 1168 } 1169 1170 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1171 if (!msg) { 1172 err = -ENOMEM; 1173 goto err; 1174 } 1175 1176 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1177 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1178 0, 0); 1179 1180 err = fill_port_info(msg, device, port, sock_net(skb->sk)); 1181 if (err) 1182 goto err_free; 1183 1184 nlmsg_end(msg, nlh); 1185 ib_device_put(device); 1186 1187 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1188 1189 err_free: 1190 nlmsg_free(msg); 1191 err: 1192 ib_device_put(device); 1193 return err; 1194 } 1195 1196 static int nldev_port_get_dumpit(struct sk_buff *skb, 1197 struct netlink_callback *cb) 1198 { 1199 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1200 struct ib_device *device; 1201 int start = cb->args[0]; 1202 struct nlmsghdr *nlh; 1203 u32 idx = 0; 1204 u32 ifindex; 1205 int err; 1206 unsigned int p; 1207 1208 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1209 nldev_policy, NULL); 1210 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1211 return -EINVAL; 1212 1213 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1214 device = ib_device_get_by_index(sock_net(skb->sk), ifindex); 1215 if (!device) 1216 return -EINVAL; 1217 1218 rdma_for_each_port (device, p) { 1219 /* 1220 * The dumpit function returns all information from specific 1221 * index. This specific index is taken from the netlink 1222 * messages request sent by user and it is available 1223 * in cb->args[0]. 1224 * 1225 * Usually, the user doesn't fill this field and it causes 1226 * to return everything. 1227 * 1228 */ 1229 if (idx < start) { 1230 idx++; 1231 continue; 1232 } 1233 1234 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, 1235 cb->nlh->nlmsg_seq, 1236 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1237 RDMA_NLDEV_CMD_PORT_GET), 1238 0, NLM_F_MULTI); 1239 1240 if (fill_port_info(skb, device, p, sock_net(skb->sk))) { 1241 nlmsg_cancel(skb, nlh); 1242 goto out; 1243 } 1244 idx++; 1245 nlmsg_end(skb, nlh); 1246 } 1247 1248 out: 1249 ib_device_put(device); 1250 cb->args[0] = idx; 1251 return skb->len; 1252 } 1253 1254 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1255 struct netlink_ext_ack *extack) 1256 { 1257 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1258 struct ib_device *device; 1259 struct sk_buff *msg; 1260 u32 index; 1261 int ret; 1262 1263 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1264 nldev_policy, extack); 1265 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1266 return -EINVAL; 1267 1268 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1269 device = ib_device_get_by_index(sock_net(skb->sk), index); 1270 if (!device) 1271 return -EINVAL; 1272 1273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1274 if (!msg) { 1275 ret = -ENOMEM; 1276 goto err; 1277 } 1278 1279 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1280 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1281 0, 0); 1282 1283 ret = fill_res_info(msg, device); 1284 if (ret) 1285 goto err_free; 1286 1287 nlmsg_end(msg, nlh); 1288 ib_device_put(device); 1289 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1290 1291 err_free: 1292 nlmsg_free(msg); 1293 err: 1294 ib_device_put(device); 1295 return ret; 1296 } 1297 1298 static int _nldev_res_get_dumpit(struct ib_device *device, 1299 struct sk_buff *skb, 1300 struct netlink_callback *cb, 1301 unsigned int idx) 1302 { 1303 int start = cb->args[0]; 1304 struct nlmsghdr *nlh; 1305 1306 if (idx < start) 1307 return 0; 1308 1309 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1310 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1311 0, NLM_F_MULTI); 1312 1313 if (fill_res_info(skb, device)) { 1314 nlmsg_cancel(skb, nlh); 1315 goto out; 1316 } 1317 nlmsg_end(skb, nlh); 1318 1319 idx++; 1320 1321 out: 1322 cb->args[0] = idx; 1323 return skb->len; 1324 } 1325 1326 static int nldev_res_get_dumpit(struct sk_buff *skb, 1327 struct netlink_callback *cb) 1328 { 1329 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb); 1330 } 1331 1332 struct nldev_fill_res_entry { 1333 enum rdma_nldev_attr nldev_attr; 1334 u8 flags; 1335 u32 entry; 1336 u32 id; 1337 }; 1338 1339 enum nldev_res_flags { 1340 NLDEV_PER_DEV = 1 << 0, 1341 }; 1342 1343 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = { 1344 [RDMA_RESTRACK_QP] = { 1345 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP, 1346 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY, 1347 .id = RDMA_NLDEV_ATTR_RES_LQPN, 1348 }, 1349 [RDMA_RESTRACK_CM_ID] = { 1350 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID, 1351 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY, 1352 .id = RDMA_NLDEV_ATTR_RES_CM_IDN, 1353 }, 1354 [RDMA_RESTRACK_CQ] = { 1355 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ, 1356 .flags = NLDEV_PER_DEV, 1357 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY, 1358 .id = RDMA_NLDEV_ATTR_RES_CQN, 1359 }, 1360 [RDMA_RESTRACK_MR] = { 1361 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR, 1362 .flags = NLDEV_PER_DEV, 1363 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY, 1364 .id = RDMA_NLDEV_ATTR_RES_MRN, 1365 }, 1366 [RDMA_RESTRACK_PD] = { 1367 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD, 1368 .flags = NLDEV_PER_DEV, 1369 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY, 1370 .id = RDMA_NLDEV_ATTR_RES_PDN, 1371 }, 1372 [RDMA_RESTRACK_COUNTER] = { 1373 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER, 1374 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, 1375 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID, 1376 }, 1377 [RDMA_RESTRACK_CTX] = { 1378 .nldev_attr = RDMA_NLDEV_ATTR_RES_CTX, 1379 .flags = NLDEV_PER_DEV, 1380 .entry = RDMA_NLDEV_ATTR_RES_CTX_ENTRY, 1381 .id = RDMA_NLDEV_ATTR_RES_CTXN, 1382 }, 1383 [RDMA_RESTRACK_SRQ] = { 1384 .nldev_attr = RDMA_NLDEV_ATTR_RES_SRQ, 1385 .flags = NLDEV_PER_DEV, 1386 .entry = RDMA_NLDEV_ATTR_RES_SRQ_ENTRY, 1387 .id = RDMA_NLDEV_ATTR_RES_SRQN, 1388 }, 1389 1390 }; 1391 1392 static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1393 struct netlink_ext_ack *extack, 1394 enum rdma_restrack_type res_type, 1395 res_fill_func_t fill_func) 1396 { 1397 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1398 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1399 struct rdma_restrack_entry *res; 1400 struct ib_device *device; 1401 u32 index, id, port = 0; 1402 bool has_cap_net_admin; 1403 struct sk_buff *msg; 1404 int ret; 1405 1406 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1407 nldev_policy, extack); 1408 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id]) 1409 return -EINVAL; 1410 1411 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1412 device = ib_device_get_by_index(sock_net(skb->sk), index); 1413 if (!device) 1414 return -EINVAL; 1415 1416 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1417 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1418 if (!rdma_is_port_valid(device, port)) { 1419 ret = -EINVAL; 1420 goto err; 1421 } 1422 } 1423 1424 if ((port && fe->flags & NLDEV_PER_DEV) || 1425 (!port && ~fe->flags & NLDEV_PER_DEV)) { 1426 ret = -EINVAL; 1427 goto err; 1428 } 1429 1430 id = nla_get_u32(tb[fe->id]); 1431 res = rdma_restrack_get_byid(device, res_type, id); 1432 if (IS_ERR(res)) { 1433 ret = PTR_ERR(res); 1434 goto err; 1435 } 1436 1437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1438 if (!msg) { 1439 ret = -ENOMEM; 1440 goto err_get; 1441 } 1442 1443 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1444 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1445 RDMA_NL_GET_OP(nlh->nlmsg_type)), 1446 0, 0); 1447 1448 if (fill_nldev_handle(msg, device)) { 1449 ret = -EMSGSIZE; 1450 goto err_free; 1451 } 1452 1453 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN); 1454 1455 ret = fill_func(msg, has_cap_net_admin, res, port); 1456 if (ret) 1457 goto err_free; 1458 1459 rdma_restrack_put(res); 1460 nlmsg_end(msg, nlh); 1461 ib_device_put(device); 1462 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1463 1464 err_free: 1465 nlmsg_free(msg); 1466 err_get: 1467 rdma_restrack_put(res); 1468 err: 1469 ib_device_put(device); 1470 return ret; 1471 } 1472 1473 static int res_get_common_dumpit(struct sk_buff *skb, 1474 struct netlink_callback *cb, 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 rdma_restrack_root *rt; 1482 int err, ret = 0, idx = 0; 1483 struct nlattr *table_attr; 1484 struct nlattr *entry_attr; 1485 struct ib_device *device; 1486 int start = cb->args[0]; 1487 bool has_cap_net_admin; 1488 struct nlmsghdr *nlh; 1489 unsigned long id; 1490 u32 index, port = 0; 1491 bool filled = false; 1492 1493 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1494 nldev_policy, NULL); 1495 /* 1496 * Right now, we are expecting the device index to get res information, 1497 * but it is possible to extend this code to return all devices in 1498 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX. 1499 * if it doesn't exist, we will iterate over all devices. 1500 * 1501 * But it is not needed for now. 1502 */ 1503 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1504 return -EINVAL; 1505 1506 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1507 device = ib_device_get_by_index(sock_net(skb->sk), index); 1508 if (!device) 1509 return -EINVAL; 1510 1511 /* 1512 * If no PORT_INDEX is supplied, we will return all QPs from that device 1513 */ 1514 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1515 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1516 if (!rdma_is_port_valid(device, port)) { 1517 ret = -EINVAL; 1518 goto err_index; 1519 } 1520 } 1521 1522 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1523 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1524 RDMA_NL_GET_OP(cb->nlh->nlmsg_type)), 1525 0, NLM_F_MULTI); 1526 1527 if (fill_nldev_handle(skb, device)) { 1528 ret = -EMSGSIZE; 1529 goto err; 1530 } 1531 1532 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr); 1533 if (!table_attr) { 1534 ret = -EMSGSIZE; 1535 goto err; 1536 } 1537 1538 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN); 1539 1540 rt = &device->res[res_type]; 1541 xa_lock(&rt->xa); 1542 /* 1543 * FIXME: if the skip ahead is something common this loop should 1544 * use xas_for_each & xas_pause to optimize, we can have a lot of 1545 * objects. 1546 */ 1547 xa_for_each(&rt->xa, id, res) { 1548 if (idx < start || !rdma_restrack_get(res)) 1549 goto next; 1550 1551 xa_unlock(&rt->xa); 1552 1553 filled = true; 1554 1555 entry_attr = nla_nest_start_noflag(skb, fe->entry); 1556 if (!entry_attr) { 1557 ret = -EMSGSIZE; 1558 rdma_restrack_put(res); 1559 goto msg_full; 1560 } 1561 1562 ret = fill_func(skb, has_cap_net_admin, res, port); 1563 1564 rdma_restrack_put(res); 1565 1566 if (ret) { 1567 nla_nest_cancel(skb, entry_attr); 1568 if (ret == -EMSGSIZE) 1569 goto msg_full; 1570 if (ret == -EAGAIN) 1571 goto again; 1572 goto res_err; 1573 } 1574 nla_nest_end(skb, entry_attr); 1575 again: xa_lock(&rt->xa); 1576 next: idx++; 1577 } 1578 xa_unlock(&rt->xa); 1579 1580 msg_full: 1581 nla_nest_end(skb, table_attr); 1582 nlmsg_end(skb, nlh); 1583 cb->args[0] = idx; 1584 1585 /* 1586 * No more entries to fill, cancel the message and 1587 * return 0 to mark end of dumpit. 1588 */ 1589 if (!filled) 1590 goto err; 1591 1592 ib_device_put(device); 1593 return skb->len; 1594 1595 res_err: 1596 nla_nest_cancel(skb, table_attr); 1597 1598 err: 1599 nlmsg_cancel(skb, nlh); 1600 1601 err_index: 1602 ib_device_put(device); 1603 return ret; 1604 } 1605 1606 #define RES_GET_FUNCS(name, type) \ 1607 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \ 1608 struct netlink_callback *cb) \ 1609 { \ 1610 return res_get_common_dumpit(skb, cb, type, \ 1611 fill_res_##name##_entry); \ 1612 } \ 1613 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \ 1614 struct nlmsghdr *nlh, \ 1615 struct netlink_ext_ack *extack) \ 1616 { \ 1617 return res_get_common_doit(skb, nlh, extack, type, \ 1618 fill_res_##name##_entry); \ 1619 } 1620 1621 RES_GET_FUNCS(qp, RDMA_RESTRACK_QP); 1622 RES_GET_FUNCS(qp_raw, RDMA_RESTRACK_QP); 1623 RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID); 1624 RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ); 1625 RES_GET_FUNCS(cq_raw, RDMA_RESTRACK_CQ); 1626 RES_GET_FUNCS(pd, RDMA_RESTRACK_PD); 1627 RES_GET_FUNCS(mr, RDMA_RESTRACK_MR); 1628 RES_GET_FUNCS(mr_raw, RDMA_RESTRACK_MR); 1629 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER); 1630 RES_GET_FUNCS(ctx, RDMA_RESTRACK_CTX); 1631 RES_GET_FUNCS(srq, RDMA_RESTRACK_SRQ); 1632 1633 static LIST_HEAD(link_ops); 1634 static DECLARE_RWSEM(link_ops_rwsem); 1635 1636 static const struct rdma_link_ops *link_ops_get(const char *type) 1637 { 1638 const struct rdma_link_ops *ops; 1639 1640 list_for_each_entry(ops, &link_ops, list) { 1641 if (!strcmp(ops->type, type)) 1642 goto out; 1643 } 1644 ops = NULL; 1645 out: 1646 return ops; 1647 } 1648 1649 void rdma_link_register(struct rdma_link_ops *ops) 1650 { 1651 down_write(&link_ops_rwsem); 1652 if (WARN_ON_ONCE(link_ops_get(ops->type))) 1653 goto out; 1654 list_add(&ops->list, &link_ops); 1655 out: 1656 up_write(&link_ops_rwsem); 1657 } 1658 EXPORT_SYMBOL(rdma_link_register); 1659 1660 void rdma_link_unregister(struct rdma_link_ops *ops) 1661 { 1662 down_write(&link_ops_rwsem); 1663 list_del(&ops->list); 1664 up_write(&link_ops_rwsem); 1665 } 1666 EXPORT_SYMBOL(rdma_link_unregister); 1667 1668 static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, 1669 struct netlink_ext_ack *extack) 1670 { 1671 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1672 char ibdev_name[IB_DEVICE_NAME_MAX]; 1673 const struct rdma_link_ops *ops; 1674 char ndev_name[IFNAMSIZ]; 1675 struct net_device *ndev; 1676 char type[IFNAMSIZ]; 1677 int err; 1678 1679 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1680 nldev_policy, extack); 1681 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] || 1682 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME]) 1683 return -EINVAL; 1684 1685 nla_strscpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 1686 sizeof(ibdev_name)); 1687 if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0) 1688 return -EINVAL; 1689 1690 nla_strscpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type)); 1691 nla_strscpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME], 1692 sizeof(ndev_name)); 1693 1694 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name); 1695 if (!ndev) 1696 return -ENODEV; 1697 1698 down_read(&link_ops_rwsem); 1699 ops = link_ops_get(type); 1700 #ifdef CONFIG_MODULES 1701 if (!ops) { 1702 up_read(&link_ops_rwsem); 1703 request_module("rdma-link-%s", type); 1704 down_read(&link_ops_rwsem); 1705 ops = link_ops_get(type); 1706 } 1707 #endif 1708 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL; 1709 up_read(&link_ops_rwsem); 1710 dev_put(ndev); 1711 1712 return err; 1713 } 1714 1715 static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, 1716 struct netlink_ext_ack *extack) 1717 { 1718 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1719 struct ib_device *device; 1720 u32 index; 1721 int err; 1722 1723 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1724 nldev_policy, extack); 1725 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1726 return -EINVAL; 1727 1728 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1729 device = ib_device_get_by_index(sock_net(skb->sk), index); 1730 if (!device) 1731 return -EINVAL; 1732 1733 if (!(device->attrs.device_cap_flags & IB_DEVICE_ALLOW_USER_UNREG)) { 1734 ib_device_put(device); 1735 return -EINVAL; 1736 } 1737 1738 ib_unregister_device_and_put(device); 1739 return 0; 1740 } 1741 1742 static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh, 1743 struct netlink_ext_ack *extack) 1744 { 1745 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1746 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE]; 1747 struct ib_client_nl_info data = {}; 1748 struct ib_device *ibdev = NULL; 1749 struct sk_buff *msg; 1750 u32 index; 1751 int err; 1752 1753 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy, 1754 extack); 1755 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE]) 1756 return -EINVAL; 1757 1758 nla_strscpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE], 1759 sizeof(client_name)); 1760 1761 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) { 1762 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1763 ibdev = ib_device_get_by_index(sock_net(skb->sk), index); 1764 if (!ibdev) 1765 return -EINVAL; 1766 1767 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1768 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1769 if (!rdma_is_port_valid(ibdev, data.port)) { 1770 err = -EINVAL; 1771 goto out_put; 1772 } 1773 } else { 1774 data.port = -1; 1775 } 1776 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1777 return -EINVAL; 1778 } 1779 1780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1781 if (!msg) { 1782 err = -ENOMEM; 1783 goto out_put; 1784 } 1785 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1786 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1787 RDMA_NLDEV_CMD_GET_CHARDEV), 1788 0, 0); 1789 1790 data.nl_msg = msg; 1791 err = ib_get_client_nl_info(ibdev, client_name, &data); 1792 if (err) 1793 goto out_nlmsg; 1794 1795 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV, 1796 huge_encode_dev(data.cdev->devt), 1797 RDMA_NLDEV_ATTR_PAD); 1798 if (err) 1799 goto out_data; 1800 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi, 1801 RDMA_NLDEV_ATTR_PAD); 1802 if (err) 1803 goto out_data; 1804 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME, 1805 dev_name(data.cdev))) { 1806 err = -EMSGSIZE; 1807 goto out_data; 1808 } 1809 1810 nlmsg_end(msg, nlh); 1811 put_device(data.cdev); 1812 if (ibdev) 1813 ib_device_put(ibdev); 1814 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1815 1816 out_data: 1817 put_device(data.cdev); 1818 out_nlmsg: 1819 nlmsg_free(msg); 1820 out_put: 1821 if (ibdev) 1822 ib_device_put(ibdev); 1823 return err; 1824 } 1825 1826 static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1827 struct netlink_ext_ack *extack) 1828 { 1829 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1830 struct sk_buff *msg; 1831 int err; 1832 1833 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1834 nldev_policy, extack); 1835 if (err) 1836 return err; 1837 1838 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1839 if (!msg) 1840 return -ENOMEM; 1841 1842 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1843 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1844 RDMA_NLDEV_CMD_SYS_GET), 1845 0, 0); 1846 1847 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, 1848 (u8)ib_devices_shared_netns); 1849 if (err) { 1850 nlmsg_free(msg); 1851 return err; 1852 } 1853 1854 /* 1855 * Copy-on-fork is supported. 1856 * See commits: 1857 * 70e806e4e645 ("mm: Do early cow for pinned pages during fork() for ptes") 1858 * 4eae4efa2c29 ("hugetlb: do early cow when page pinned on src mm") 1859 * for more details. Don't backport this without them. 1860 * 1861 * Return value ignored on purpose, assume copy-on-fork is not 1862 * supported in case of failure. 1863 */ 1864 nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_COPY_ON_FORK, 1); 1865 1866 nlmsg_end(msg, nlh); 1867 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1868 } 1869 1870 static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1871 struct netlink_ext_ack *extack) 1872 { 1873 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1874 u8 enable; 1875 int err; 1876 1877 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1878 nldev_policy, extack); 1879 if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) 1880 return -EINVAL; 1881 1882 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]); 1883 /* Only 0 and 1 are supported */ 1884 if (enable > 1) 1885 return -EINVAL; 1886 1887 err = rdma_compatdev_set(enable); 1888 return err; 1889 } 1890 1891 static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1892 struct netlink_ext_ack *extack) 1893 { 1894 u32 index, port, mode, mask = 0, qpn, cntn = 0; 1895 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1896 struct ib_device *device; 1897 struct sk_buff *msg; 1898 int ret; 1899 1900 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1901 nldev_policy, extack); 1902 /* Currently only counter for QP is supported */ 1903 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 1904 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 1905 !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || !tb[RDMA_NLDEV_ATTR_STAT_MODE]) 1906 return -EINVAL; 1907 1908 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 1909 return -EINVAL; 1910 1911 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1912 device = ib_device_get_by_index(sock_net(skb->sk), index); 1913 if (!device) 1914 return -EINVAL; 1915 1916 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1917 if (!rdma_is_port_valid(device, port)) { 1918 ret = -EINVAL; 1919 goto err; 1920 } 1921 1922 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1923 if (!msg) { 1924 ret = -ENOMEM; 1925 goto err; 1926 } 1927 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1928 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1929 RDMA_NLDEV_CMD_STAT_SET), 1930 0, 0); 1931 1932 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]); 1933 if (mode == RDMA_COUNTER_MODE_AUTO) { 1934 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]) 1935 mask = nla_get_u32( 1936 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]); 1937 ret = rdma_counter_set_auto_mode(device, port, mask, extack); 1938 if (ret) 1939 goto err_msg; 1940 } else { 1941 if (!tb[RDMA_NLDEV_ATTR_RES_LQPN]) 1942 goto err_msg; 1943 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 1944 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) { 1945 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 1946 ret = rdma_counter_bind_qpn(device, port, qpn, cntn); 1947 } else { 1948 ret = rdma_counter_bind_qpn_alloc(device, port, 1949 qpn, &cntn); 1950 } 1951 if (ret) 1952 goto err_msg; 1953 1954 if (fill_nldev_handle(msg, device) || 1955 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 1956 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 1957 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 1958 ret = -EMSGSIZE; 1959 goto err_fill; 1960 } 1961 } 1962 1963 nlmsg_end(msg, nlh); 1964 ib_device_put(device); 1965 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1966 1967 err_fill: 1968 rdma_counter_unbind_qpn(device, port, qpn, cntn); 1969 err_msg: 1970 nlmsg_free(msg); 1971 err: 1972 ib_device_put(device); 1973 return ret; 1974 } 1975 1976 static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1977 struct netlink_ext_ack *extack) 1978 { 1979 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1980 struct ib_device *device; 1981 struct sk_buff *msg; 1982 u32 index, port, qpn, cntn; 1983 int ret; 1984 1985 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1986 nldev_policy, extack); 1987 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 1988 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || 1989 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] || 1990 !tb[RDMA_NLDEV_ATTR_RES_LQPN]) 1991 return -EINVAL; 1992 1993 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 1994 return -EINVAL; 1995 1996 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1997 device = ib_device_get_by_index(sock_net(skb->sk), index); 1998 if (!device) 1999 return -EINVAL; 2000 2001 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2002 if (!rdma_is_port_valid(device, port)) { 2003 ret = -EINVAL; 2004 goto err; 2005 } 2006 2007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2008 if (!msg) { 2009 ret = -ENOMEM; 2010 goto err; 2011 } 2012 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2013 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2014 RDMA_NLDEV_CMD_STAT_SET), 2015 0, 0); 2016 2017 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 2018 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 2019 if (fill_nldev_handle(msg, device) || 2020 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 2021 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 2022 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 2023 ret = -EMSGSIZE; 2024 goto err_fill; 2025 } 2026 2027 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn); 2028 if (ret) 2029 goto err_fill; 2030 2031 nlmsg_end(msg, nlh); 2032 ib_device_put(device); 2033 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2034 2035 err_fill: 2036 nlmsg_free(msg); 2037 err: 2038 ib_device_put(device); 2039 return ret; 2040 } 2041 2042 static int stat_get_doit_default_counter(struct sk_buff *skb, 2043 struct nlmsghdr *nlh, 2044 struct netlink_ext_ack *extack, 2045 struct nlattr *tb[]) 2046 { 2047 struct rdma_hw_stats *stats; 2048 struct nlattr *table_attr; 2049 struct ib_device *device; 2050 int ret, num_cnts, i; 2051 struct sk_buff *msg; 2052 u32 index, port; 2053 u64 v; 2054 2055 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 2056 return -EINVAL; 2057 2058 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2059 device = ib_device_get_by_index(sock_net(skb->sk), index); 2060 if (!device) 2061 return -EINVAL; 2062 2063 if (!device->ops.alloc_hw_port_stats || !device->ops.get_hw_stats) { 2064 ret = -EINVAL; 2065 goto err; 2066 } 2067 2068 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2069 stats = ib_get_hw_stats_port(device, port); 2070 if (!stats) { 2071 ret = -EINVAL; 2072 goto err; 2073 } 2074 2075 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2076 if (!msg) { 2077 ret = -ENOMEM; 2078 goto err; 2079 } 2080 2081 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2082 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2083 RDMA_NLDEV_CMD_STAT_GET), 2084 0, 0); 2085 2086 if (fill_nldev_handle(msg, device) || 2087 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { 2088 ret = -EMSGSIZE; 2089 goto err_msg; 2090 } 2091 2092 mutex_lock(&stats->lock); 2093 2094 num_cnts = device->ops.get_hw_stats(device, stats, port, 0); 2095 if (num_cnts < 0) { 2096 ret = -EINVAL; 2097 goto err_stats; 2098 } 2099 2100 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 2101 if (!table_attr) { 2102 ret = -EMSGSIZE; 2103 goto err_stats; 2104 } 2105 for (i = 0; i < num_cnts; i++) { 2106 v = stats->value[i] + 2107 rdma_counter_get_hwstat_value(device, port, i); 2108 if (rdma_nl_stat_hwcounter_entry(msg, stats->names[i], v)) { 2109 ret = -EMSGSIZE; 2110 goto err_table; 2111 } 2112 } 2113 nla_nest_end(msg, table_attr); 2114 2115 mutex_unlock(&stats->lock); 2116 nlmsg_end(msg, nlh); 2117 ib_device_put(device); 2118 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2119 2120 err_table: 2121 nla_nest_cancel(msg, table_attr); 2122 err_stats: 2123 mutex_unlock(&stats->lock); 2124 err_msg: 2125 nlmsg_free(msg); 2126 err: 2127 ib_device_put(device); 2128 return ret; 2129 } 2130 2131 static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh, 2132 struct netlink_ext_ack *extack, struct nlattr *tb[]) 2133 2134 { 2135 static enum rdma_nl_counter_mode mode; 2136 static enum rdma_nl_counter_mask mask; 2137 struct ib_device *device; 2138 struct sk_buff *msg; 2139 u32 index, port; 2140 int ret; 2141 2142 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) 2143 return nldev_res_get_counter_doit(skb, nlh, extack); 2144 2145 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] || 2146 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 2147 return -EINVAL; 2148 2149 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 2150 device = ib_device_get_by_index(sock_net(skb->sk), index); 2151 if (!device) 2152 return -EINVAL; 2153 2154 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 2155 if (!rdma_is_port_valid(device, port)) { 2156 ret = -EINVAL; 2157 goto err; 2158 } 2159 2160 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2161 if (!msg) { 2162 ret = -ENOMEM; 2163 goto err; 2164 } 2165 2166 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 2167 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 2168 RDMA_NLDEV_CMD_STAT_GET), 2169 0, 0); 2170 2171 ret = rdma_counter_get_mode(device, port, &mode, &mask); 2172 if (ret) 2173 goto err_msg; 2174 2175 if (fill_nldev_handle(msg, device) || 2176 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 2177 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) { 2178 ret = -EMSGSIZE; 2179 goto err_msg; 2180 } 2181 2182 if ((mode == RDMA_COUNTER_MODE_AUTO) && 2183 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) { 2184 ret = -EMSGSIZE; 2185 goto err_msg; 2186 } 2187 2188 nlmsg_end(msg, nlh); 2189 ib_device_put(device); 2190 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2191 2192 err_msg: 2193 nlmsg_free(msg); 2194 err: 2195 ib_device_put(device); 2196 return ret; 2197 } 2198 2199 static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2200 struct netlink_ext_ack *extack) 2201 { 2202 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2203 int ret; 2204 2205 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2206 nldev_policy, extack); 2207 if (ret) 2208 return -EINVAL; 2209 2210 if (!tb[RDMA_NLDEV_ATTR_STAT_RES]) 2211 return stat_get_doit_default_counter(skb, nlh, extack, tb); 2212 2213 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2214 case RDMA_NLDEV_ATTR_RES_QP: 2215 ret = stat_get_doit_qp(skb, nlh, extack, tb); 2216 break; 2217 case RDMA_NLDEV_ATTR_RES_MR: 2218 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR, 2219 fill_stat_mr_entry); 2220 break; 2221 default: 2222 ret = -EINVAL; 2223 break; 2224 } 2225 2226 return ret; 2227 } 2228 2229 static int nldev_stat_get_dumpit(struct sk_buff *skb, 2230 struct netlink_callback *cb) 2231 { 2232 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2233 int ret; 2234 2235 ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2236 nldev_policy, NULL); 2237 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES]) 2238 return -EINVAL; 2239 2240 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2241 case RDMA_NLDEV_ATTR_RES_QP: 2242 ret = nldev_res_get_counter_dumpit(skb, cb); 2243 break; 2244 case RDMA_NLDEV_ATTR_RES_MR: 2245 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR, 2246 fill_stat_mr_entry); 2247 break; 2248 default: 2249 ret = -EINVAL; 2250 break; 2251 } 2252 2253 return ret; 2254 } 2255 2256 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { 2257 [RDMA_NLDEV_CMD_GET] = { 2258 .doit = nldev_get_doit, 2259 .dump = nldev_get_dumpit, 2260 }, 2261 [RDMA_NLDEV_CMD_GET_CHARDEV] = { 2262 .doit = nldev_get_chardev, 2263 }, 2264 [RDMA_NLDEV_CMD_SET] = { 2265 .doit = nldev_set_doit, 2266 .flags = RDMA_NL_ADMIN_PERM, 2267 }, 2268 [RDMA_NLDEV_CMD_NEWLINK] = { 2269 .doit = nldev_newlink, 2270 .flags = RDMA_NL_ADMIN_PERM, 2271 }, 2272 [RDMA_NLDEV_CMD_DELLINK] = { 2273 .doit = nldev_dellink, 2274 .flags = RDMA_NL_ADMIN_PERM, 2275 }, 2276 [RDMA_NLDEV_CMD_PORT_GET] = { 2277 .doit = nldev_port_get_doit, 2278 .dump = nldev_port_get_dumpit, 2279 }, 2280 [RDMA_NLDEV_CMD_RES_GET] = { 2281 .doit = nldev_res_get_doit, 2282 .dump = nldev_res_get_dumpit, 2283 }, 2284 [RDMA_NLDEV_CMD_RES_QP_GET] = { 2285 .doit = nldev_res_get_qp_doit, 2286 .dump = nldev_res_get_qp_dumpit, 2287 }, 2288 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = { 2289 .doit = nldev_res_get_cm_id_doit, 2290 .dump = nldev_res_get_cm_id_dumpit, 2291 }, 2292 [RDMA_NLDEV_CMD_RES_CQ_GET] = { 2293 .doit = nldev_res_get_cq_doit, 2294 .dump = nldev_res_get_cq_dumpit, 2295 }, 2296 [RDMA_NLDEV_CMD_RES_MR_GET] = { 2297 .doit = nldev_res_get_mr_doit, 2298 .dump = nldev_res_get_mr_dumpit, 2299 }, 2300 [RDMA_NLDEV_CMD_RES_PD_GET] = { 2301 .doit = nldev_res_get_pd_doit, 2302 .dump = nldev_res_get_pd_dumpit, 2303 }, 2304 [RDMA_NLDEV_CMD_RES_CTX_GET] = { 2305 .doit = nldev_res_get_ctx_doit, 2306 .dump = nldev_res_get_ctx_dumpit, 2307 }, 2308 [RDMA_NLDEV_CMD_RES_SRQ_GET] = { 2309 .doit = nldev_res_get_srq_doit, 2310 .dump = nldev_res_get_srq_dumpit, 2311 }, 2312 [RDMA_NLDEV_CMD_SYS_GET] = { 2313 .doit = nldev_sys_get_doit, 2314 }, 2315 [RDMA_NLDEV_CMD_SYS_SET] = { 2316 .doit = nldev_set_sys_set_doit, 2317 }, 2318 [RDMA_NLDEV_CMD_STAT_SET] = { 2319 .doit = nldev_stat_set_doit, 2320 .flags = RDMA_NL_ADMIN_PERM, 2321 }, 2322 [RDMA_NLDEV_CMD_STAT_GET] = { 2323 .doit = nldev_stat_get_doit, 2324 .dump = nldev_stat_get_dumpit, 2325 }, 2326 [RDMA_NLDEV_CMD_STAT_DEL] = { 2327 .doit = nldev_stat_del_doit, 2328 .flags = RDMA_NL_ADMIN_PERM, 2329 }, 2330 [RDMA_NLDEV_CMD_RES_QP_GET_RAW] = { 2331 .doit = nldev_res_get_qp_raw_doit, 2332 .dump = nldev_res_get_qp_raw_dumpit, 2333 .flags = RDMA_NL_ADMIN_PERM, 2334 }, 2335 [RDMA_NLDEV_CMD_RES_CQ_GET_RAW] = { 2336 .doit = nldev_res_get_cq_raw_doit, 2337 .dump = nldev_res_get_cq_raw_dumpit, 2338 .flags = RDMA_NL_ADMIN_PERM, 2339 }, 2340 [RDMA_NLDEV_CMD_RES_MR_GET_RAW] = { 2341 .doit = nldev_res_get_mr_raw_doit, 2342 .dump = nldev_res_get_mr_raw_dumpit, 2343 .flags = RDMA_NL_ADMIN_PERM, 2344 }, 2345 }; 2346 2347 void __init nldev_init(void) 2348 { 2349 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table); 2350 } 2351 2352 void __exit nldev_exit(void) 2353 { 2354 rdma_nl_unregister(RDMA_NL_NLDEV); 2355 } 2356 2357 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5); 2358