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_CTXN] = { .type = NLA_U32 }, 96 [RDMA_NLDEV_ATTR_RES_DST_ADDR] = { 97 .len = sizeof(struct __kernel_sockaddr_storage) }, 98 [RDMA_NLDEV_ATTR_RES_IOVA] = { .type = NLA_U64 }, 99 [RDMA_NLDEV_ATTR_RES_KERN_NAME] = { .type = NLA_NUL_STRING, 100 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 101 [RDMA_NLDEV_ATTR_RES_LKEY] = { .type = NLA_U32 }, 102 [RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY] = { .type = NLA_U32 }, 103 [RDMA_NLDEV_ATTR_RES_LQPN] = { .type = NLA_U32 }, 104 [RDMA_NLDEV_ATTR_RES_MR] = { .type = NLA_NESTED }, 105 [RDMA_NLDEV_ATTR_RES_MRLEN] = { .type = NLA_U64 }, 106 [RDMA_NLDEV_ATTR_RES_MRN] = { .type = NLA_U32 }, 107 [RDMA_NLDEV_ATTR_RES_MR_ENTRY] = { .type = NLA_NESTED }, 108 [RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE] = { .type = NLA_U8 }, 109 [RDMA_NLDEV_ATTR_RES_PD] = { .type = NLA_NESTED }, 110 [RDMA_NLDEV_ATTR_RES_PDN] = { .type = NLA_U32 }, 111 [RDMA_NLDEV_ATTR_RES_PD_ENTRY] = { .type = NLA_NESTED }, 112 [RDMA_NLDEV_ATTR_RES_PID] = { .type = NLA_U32 }, 113 [RDMA_NLDEV_ATTR_RES_POLL_CTX] = { .type = NLA_U8 }, 114 [RDMA_NLDEV_ATTR_RES_PS] = { .type = NLA_U32 }, 115 [RDMA_NLDEV_ATTR_RES_QP] = { .type = NLA_NESTED }, 116 [RDMA_NLDEV_ATTR_RES_QP_ENTRY] = { .type = NLA_NESTED }, 117 [RDMA_NLDEV_ATTR_RES_RKEY] = { .type = NLA_U32 }, 118 [RDMA_NLDEV_ATTR_RES_RQPN] = { .type = NLA_U32 }, 119 [RDMA_NLDEV_ATTR_RES_RQ_PSN] = { .type = NLA_U32 }, 120 [RDMA_NLDEV_ATTR_RES_SQ_PSN] = { .type = NLA_U32 }, 121 [RDMA_NLDEV_ATTR_RES_SRC_ADDR] = { 122 .len = sizeof(struct __kernel_sockaddr_storage) }, 123 [RDMA_NLDEV_ATTR_RES_STATE] = { .type = NLA_U8 }, 124 [RDMA_NLDEV_ATTR_RES_SUMMARY] = { .type = NLA_NESTED }, 125 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY] = { .type = NLA_NESTED }, 126 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR]= { .type = NLA_U64 }, 127 [RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME]= { .type = NLA_NUL_STRING, 128 .len = RDMA_NLDEV_ATTR_EMPTY_STRING }, 129 [RDMA_NLDEV_ATTR_RES_TYPE] = { .type = NLA_U8 }, 130 [RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY]= { .type = NLA_U32 }, 131 [RDMA_NLDEV_ATTR_RES_USECNT] = { .type = NLA_U64 }, 132 [RDMA_NLDEV_ATTR_SM_LID] = { .type = NLA_U32 }, 133 [RDMA_NLDEV_ATTR_SUBNET_PREFIX] = { .type = NLA_U64 }, 134 [RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK] = { .type = NLA_U32 }, 135 [RDMA_NLDEV_ATTR_STAT_MODE] = { .type = NLA_U32 }, 136 [RDMA_NLDEV_ATTR_STAT_RES] = { .type = NLA_U32 }, 137 [RDMA_NLDEV_ATTR_STAT_COUNTER] = { .type = NLA_NESTED }, 138 [RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY] = { .type = NLA_NESTED }, 139 [RDMA_NLDEV_ATTR_STAT_COUNTER_ID] = { .type = NLA_U32 }, 140 [RDMA_NLDEV_ATTR_STAT_HWCOUNTERS] = { .type = NLA_NESTED }, 141 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY] = { .type = NLA_NESTED }, 142 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME] = { .type = NLA_NUL_STRING }, 143 [RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE] = { .type = NLA_U64 }, 144 [RDMA_NLDEV_ATTR_SYS_IMAGE_GUID] = { .type = NLA_U64 }, 145 [RDMA_NLDEV_ATTR_UVERBS_DRIVER_ID] = { .type = NLA_U32 }, 146 [RDMA_NLDEV_NET_NS_FD] = { .type = NLA_U32 }, 147 [RDMA_NLDEV_SYS_ATTR_NETNS_MODE] = { .type = NLA_U8 }, 148 }; 149 150 static int put_driver_name_print_type(struct sk_buff *msg, const char *name, 151 enum rdma_nldev_print_type print_type) 152 { 153 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, name)) 154 return -EMSGSIZE; 155 if (print_type != RDMA_NLDEV_PRINT_TYPE_UNSPEC && 156 nla_put_u8(msg, RDMA_NLDEV_ATTR_DRIVER_PRINT_TYPE, print_type)) 157 return -EMSGSIZE; 158 159 return 0; 160 } 161 162 static int _rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, 163 enum rdma_nldev_print_type print_type, 164 u32 value) 165 { 166 if (put_driver_name_print_type(msg, name, print_type)) 167 return -EMSGSIZE; 168 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DRIVER_U32, value)) 169 return -EMSGSIZE; 170 171 return 0; 172 } 173 174 static int _rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, 175 enum rdma_nldev_print_type print_type, 176 u64 value) 177 { 178 if (put_driver_name_print_type(msg, name, print_type)) 179 return -EMSGSIZE; 180 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_DRIVER_U64, value, 181 RDMA_NLDEV_ATTR_PAD)) 182 return -EMSGSIZE; 183 184 return 0; 185 } 186 187 int rdma_nl_put_driver_string(struct sk_buff *msg, const char *name, 188 const char *str) 189 { 190 if (put_driver_name_print_type(msg, name, 191 RDMA_NLDEV_PRINT_TYPE_UNSPEC)) 192 return -EMSGSIZE; 193 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DRIVER_STRING, str)) 194 return -EMSGSIZE; 195 196 return 0; 197 } 198 EXPORT_SYMBOL(rdma_nl_put_driver_string); 199 200 int rdma_nl_put_driver_u32(struct sk_buff *msg, const char *name, u32 value) 201 { 202 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC, 203 value); 204 } 205 EXPORT_SYMBOL(rdma_nl_put_driver_u32); 206 207 int rdma_nl_put_driver_u32_hex(struct sk_buff *msg, const char *name, 208 u32 value) 209 { 210 return _rdma_nl_put_driver_u32(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX, 211 value); 212 } 213 EXPORT_SYMBOL(rdma_nl_put_driver_u32_hex); 214 215 int rdma_nl_put_driver_u64(struct sk_buff *msg, const char *name, u64 value) 216 { 217 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_UNSPEC, 218 value); 219 } 220 EXPORT_SYMBOL(rdma_nl_put_driver_u64); 221 222 int rdma_nl_put_driver_u64_hex(struct sk_buff *msg, const char *name, u64 value) 223 { 224 return _rdma_nl_put_driver_u64(msg, name, RDMA_NLDEV_PRINT_TYPE_HEX, 225 value); 226 } 227 EXPORT_SYMBOL(rdma_nl_put_driver_u64_hex); 228 229 static int fill_nldev_handle(struct sk_buff *msg, struct ib_device *device) 230 { 231 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_DEV_INDEX, device->index)) 232 return -EMSGSIZE; 233 if (nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_NAME, 234 dev_name(&device->dev))) 235 return -EMSGSIZE; 236 237 return 0; 238 } 239 240 static int fill_dev_info(struct sk_buff *msg, struct ib_device *device) 241 { 242 char fw[IB_FW_VERSION_NAME_MAX]; 243 int ret = 0; 244 u8 port; 245 246 if (fill_nldev_handle(msg, device)) 247 return -EMSGSIZE; 248 249 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, rdma_end_port(device))) 250 return -EMSGSIZE; 251 252 BUILD_BUG_ON(sizeof(device->attrs.device_cap_flags) != sizeof(u64)); 253 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, 254 device->attrs.device_cap_flags, 255 RDMA_NLDEV_ATTR_PAD)) 256 return -EMSGSIZE; 257 258 ib_get_device_fw_str(device, fw); 259 /* Device without FW has strlen(fw) = 0 */ 260 if (strlen(fw) && nla_put_string(msg, RDMA_NLDEV_ATTR_FW_VERSION, fw)) 261 return -EMSGSIZE; 262 263 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_NODE_GUID, 264 be64_to_cpu(device->node_guid), 265 RDMA_NLDEV_ATTR_PAD)) 266 return -EMSGSIZE; 267 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SYS_IMAGE_GUID, 268 be64_to_cpu(device->attrs.sys_image_guid), 269 RDMA_NLDEV_ATTR_PAD)) 270 return -EMSGSIZE; 271 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_NODE_TYPE, device->node_type)) 272 return -EMSGSIZE; 273 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, device->use_cq_dim)) 274 return -EMSGSIZE; 275 276 /* 277 * Link type is determined on first port and mlx4 device 278 * which can potentially have two different link type for the same 279 * IB device is considered as better to be avoided in the future, 280 */ 281 port = rdma_start_port(device); 282 if (rdma_cap_opa_mad(device, port)) 283 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "opa"); 284 else if (rdma_protocol_ib(device, port)) 285 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "ib"); 286 else if (rdma_protocol_iwarp(device, port)) 287 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "iw"); 288 else if (rdma_protocol_roce(device, port)) 289 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, "roce"); 290 else if (rdma_protocol_usnic(device, port)) 291 ret = nla_put_string(msg, RDMA_NLDEV_ATTR_DEV_PROTOCOL, 292 "usnic"); 293 return ret; 294 } 295 296 static int fill_port_info(struct sk_buff *msg, 297 struct ib_device *device, u32 port, 298 const struct net *net) 299 { 300 struct net_device *netdev = NULL; 301 struct ib_port_attr attr; 302 int ret; 303 u64 cap_flags = 0; 304 305 if (fill_nldev_handle(msg, device)) 306 return -EMSGSIZE; 307 308 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) 309 return -EMSGSIZE; 310 311 ret = ib_query_port(device, port, &attr); 312 if (ret) 313 return ret; 314 315 if (rdma_protocol_ib(device, port)) { 316 BUILD_BUG_ON((sizeof(attr.port_cap_flags) + 317 sizeof(attr.port_cap_flags2)) > sizeof(u64)); 318 cap_flags = attr.port_cap_flags | 319 ((u64)attr.port_cap_flags2 << 32); 320 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CAP_FLAGS, 321 cap_flags, RDMA_NLDEV_ATTR_PAD)) 322 return -EMSGSIZE; 323 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_SUBNET_PREFIX, 324 attr.subnet_prefix, RDMA_NLDEV_ATTR_PAD)) 325 return -EMSGSIZE; 326 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_LID, attr.lid)) 327 return -EMSGSIZE; 328 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_SM_LID, attr.sm_lid)) 329 return -EMSGSIZE; 330 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_LMC, attr.lmc)) 331 return -EMSGSIZE; 332 } 333 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_STATE, attr.state)) 334 return -EMSGSIZE; 335 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_PORT_PHYS_STATE, attr.phys_state)) 336 return -EMSGSIZE; 337 338 netdev = ib_device_get_netdev(device, port); 339 if (netdev && net_eq(dev_net(netdev), net)) { 340 ret = nla_put_u32(msg, 341 RDMA_NLDEV_ATTR_NDEV_INDEX, netdev->ifindex); 342 if (ret) 343 goto out; 344 ret = nla_put_string(msg, 345 RDMA_NLDEV_ATTR_NDEV_NAME, netdev->name); 346 } 347 348 out: 349 if (netdev) 350 dev_put(netdev); 351 return ret; 352 } 353 354 static int fill_res_info_entry(struct sk_buff *msg, 355 const char *name, u64 curr) 356 { 357 struct nlattr *entry_attr; 358 359 entry_attr = nla_nest_start_noflag(msg, 360 RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY); 361 if (!entry_attr) 362 return -EMSGSIZE; 363 364 if (nla_put_string(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_NAME, name)) 365 goto err; 366 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_SUMMARY_ENTRY_CURR, curr, 367 RDMA_NLDEV_ATTR_PAD)) 368 goto err; 369 370 nla_nest_end(msg, entry_attr); 371 return 0; 372 373 err: 374 nla_nest_cancel(msg, entry_attr); 375 return -EMSGSIZE; 376 } 377 378 static int fill_res_info(struct sk_buff *msg, struct ib_device *device) 379 { 380 static const char * const names[RDMA_RESTRACK_MAX] = { 381 [RDMA_RESTRACK_PD] = "pd", 382 [RDMA_RESTRACK_CQ] = "cq", 383 [RDMA_RESTRACK_QP] = "qp", 384 [RDMA_RESTRACK_CM_ID] = "cm_id", 385 [RDMA_RESTRACK_MR] = "mr", 386 [RDMA_RESTRACK_CTX] = "ctx", 387 }; 388 389 struct nlattr *table_attr; 390 int ret, i, curr; 391 392 if (fill_nldev_handle(msg, device)) 393 return -EMSGSIZE; 394 395 table_attr = nla_nest_start_noflag(msg, RDMA_NLDEV_ATTR_RES_SUMMARY); 396 if (!table_attr) 397 return -EMSGSIZE; 398 399 for (i = 0; i < RDMA_RESTRACK_MAX; i++) { 400 if (!names[i]) 401 continue; 402 curr = rdma_restrack_count(device, i); 403 ret = fill_res_info_entry(msg, names[i], curr); 404 if (ret) 405 goto err; 406 } 407 408 nla_nest_end(msg, table_attr); 409 return 0; 410 411 err: 412 nla_nest_cancel(msg, table_attr); 413 return ret; 414 } 415 416 static int fill_res_name_pid(struct sk_buff *msg, 417 struct rdma_restrack_entry *res) 418 { 419 int err = 0; 420 421 /* 422 * For user resources, user is should read /proc/PID/comm to get the 423 * name of the task file. 424 */ 425 if (rdma_is_kernel_res(res)) { 426 err = nla_put_string(msg, RDMA_NLDEV_ATTR_RES_KERN_NAME, 427 res->kern_name); 428 } else { 429 pid_t pid; 430 431 pid = task_pid_vnr(res->task); 432 /* 433 * Task is dead and in zombie state. 434 * There is no need to print PID anymore. 435 */ 436 if (pid) 437 /* 438 * This part is racy, task can be killed and PID will 439 * be zero right here but it is ok, next query won't 440 * return PID. We don't promise real-time reflection 441 * of SW objects. 442 */ 443 err = nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PID, pid); 444 } 445 446 return err ? -EMSGSIZE : 0; 447 } 448 449 static bool fill_res_entry(struct ib_device *dev, struct sk_buff *msg, 450 struct rdma_restrack_entry *res) 451 { 452 if (!dev->ops.fill_res_entry) 453 return false; 454 return dev->ops.fill_res_entry(msg, res); 455 } 456 457 static bool fill_stat_entry(struct ib_device *dev, struct sk_buff *msg, 458 struct rdma_restrack_entry *res) 459 { 460 if (!dev->ops.fill_stat_entry) 461 return false; 462 return dev->ops.fill_stat_entry(msg, res); 463 } 464 465 static int fill_res_qp_entry(struct sk_buff *msg, bool has_cap_net_admin, 466 struct rdma_restrack_entry *res, uint32_t port) 467 { 468 struct ib_qp *qp = container_of(res, struct ib_qp, res); 469 struct ib_device *dev = qp->device; 470 struct ib_qp_init_attr qp_init_attr; 471 struct ib_qp_attr qp_attr; 472 int ret; 473 474 ret = ib_query_qp(qp, &qp_attr, 0, &qp_init_attr); 475 if (ret) 476 return ret; 477 478 if (port && port != qp_attr.port_num) 479 return -EAGAIN; 480 481 /* In create_qp() port is not set yet */ 482 if (qp_attr.port_num && 483 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, qp_attr.port_num)) 484 goto err; 485 486 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qp->qp_num)) 487 goto err; 488 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC) { 489 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQPN, 490 qp_attr.dest_qp_num)) 491 goto err; 492 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RQ_PSN, 493 qp_attr.rq_psn)) 494 goto err; 495 } 496 497 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_SQ_PSN, qp_attr.sq_psn)) 498 goto err; 499 500 if (qp->qp_type == IB_QPT_RC || qp->qp_type == IB_QPT_UC || 501 qp->qp_type == IB_QPT_XRC_INI || qp->qp_type == IB_QPT_XRC_TGT) { 502 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_PATH_MIG_STATE, 503 qp_attr.path_mig_state)) 504 goto err; 505 } 506 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, qp->qp_type)) 507 goto err; 508 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, qp_attr.qp_state)) 509 goto err; 510 511 if (!rdma_is_kernel_res(res) && 512 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, qp->pd->res.id)) 513 goto err; 514 515 if (fill_res_name_pid(msg, res)) 516 goto err; 517 518 if (fill_res_entry(dev, msg, res)) 519 goto err; 520 521 return 0; 522 523 err: return -EMSGSIZE; 524 } 525 526 static int fill_res_cm_id_entry(struct sk_buff *msg, bool has_cap_net_admin, 527 struct rdma_restrack_entry *res, uint32_t port) 528 { 529 struct rdma_id_private *id_priv = 530 container_of(res, struct rdma_id_private, res); 531 struct ib_device *dev = id_priv->id.device; 532 struct rdma_cm_id *cm_id = &id_priv->id; 533 534 if (port && port != cm_id->port_num) 535 return 0; 536 537 if (cm_id->port_num && 538 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, cm_id->port_num)) 539 goto err; 540 541 if (id_priv->qp_num) { 542 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, id_priv->qp_num)) 543 goto err; 544 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, cm_id->qp_type)) 545 goto err; 546 } 547 548 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PS, cm_id->ps)) 549 goto err; 550 551 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_STATE, id_priv->state)) 552 goto err; 553 554 if (cm_id->route.addr.src_addr.ss_family && 555 nla_put(msg, RDMA_NLDEV_ATTR_RES_SRC_ADDR, 556 sizeof(cm_id->route.addr.src_addr), 557 &cm_id->route.addr.src_addr)) 558 goto err; 559 if (cm_id->route.addr.dst_addr.ss_family && 560 nla_put(msg, RDMA_NLDEV_ATTR_RES_DST_ADDR, 561 sizeof(cm_id->route.addr.dst_addr), 562 &cm_id->route.addr.dst_addr)) 563 goto err; 564 565 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CM_IDN, res->id)) 566 goto err; 567 568 if (fill_res_name_pid(msg, res)) 569 goto err; 570 571 if (fill_res_entry(dev, msg, res)) 572 goto err; 573 574 return 0; 575 576 err: return -EMSGSIZE; 577 } 578 579 static int fill_res_cq_entry(struct sk_buff *msg, bool has_cap_net_admin, 580 struct rdma_restrack_entry *res, uint32_t port) 581 { 582 struct ib_cq *cq = container_of(res, struct ib_cq, res); 583 struct ib_device *dev = cq->device; 584 585 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQE, cq->cqe)) 586 goto err; 587 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, 588 atomic_read(&cq->usecnt), RDMA_NLDEV_ATTR_PAD)) 589 goto err; 590 591 /* Poll context is only valid for kernel CQs */ 592 if (rdma_is_kernel_res(res) && 593 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_POLL_CTX, cq->poll_ctx)) 594 goto err; 595 596 if (nla_put_u8(msg, RDMA_NLDEV_ATTR_DEV_DIM, (cq->dim != NULL))) 597 goto err; 598 599 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CQN, res->id)) 600 goto err; 601 if (!rdma_is_kernel_res(res) && 602 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, 603 cq->uobject->uevent.uobject.context->res.id)) 604 goto err; 605 606 if (fill_res_name_pid(msg, res)) 607 goto err; 608 609 if (fill_res_entry(dev, msg, res)) 610 goto err; 611 612 return 0; 613 614 err: return -EMSGSIZE; 615 } 616 617 static int fill_res_mr_entry(struct sk_buff *msg, bool has_cap_net_admin, 618 struct rdma_restrack_entry *res, uint32_t port) 619 { 620 struct ib_mr *mr = container_of(res, struct ib_mr, res); 621 struct ib_device *dev = mr->pd->device; 622 623 if (has_cap_net_admin) { 624 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_RKEY, mr->rkey)) 625 goto err; 626 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LKEY, mr->lkey)) 627 goto err; 628 } 629 630 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_MRLEN, mr->length, 631 RDMA_NLDEV_ATTR_PAD)) 632 goto err; 633 634 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) 635 goto err; 636 637 if (!rdma_is_kernel_res(res) && 638 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, mr->pd->res.id)) 639 goto err; 640 641 if (fill_res_name_pid(msg, res)) 642 goto err; 643 644 if (fill_res_entry(dev, msg, res)) 645 goto err; 646 647 return 0; 648 649 err: return -EMSGSIZE; 650 } 651 652 static int fill_res_pd_entry(struct sk_buff *msg, bool has_cap_net_admin, 653 struct rdma_restrack_entry *res, uint32_t port) 654 { 655 struct ib_pd *pd = container_of(res, struct ib_pd, res); 656 struct ib_device *dev = pd->device; 657 658 if (has_cap_net_admin) { 659 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LOCAL_DMA_LKEY, 660 pd->local_dma_lkey)) 661 goto err; 662 if ((pd->flags & IB_PD_UNSAFE_GLOBAL_RKEY) && 663 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_UNSAFE_GLOBAL_RKEY, 664 pd->unsafe_global_rkey)) 665 goto err; 666 } 667 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_RES_USECNT, 668 atomic_read(&pd->usecnt), RDMA_NLDEV_ATTR_PAD)) 669 goto err; 670 671 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_PDN, res->id)) 672 goto err; 673 674 if (!rdma_is_kernel_res(res) && 675 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_CTXN, 676 pd->uobject->context->res.id)) 677 goto err; 678 679 if (fill_res_name_pid(msg, res)) 680 goto err; 681 682 if (fill_res_entry(dev, msg, res)) 683 goto err; 684 685 return 0; 686 687 err: return -EMSGSIZE; 688 } 689 690 static int fill_stat_counter_mode(struct sk_buff *msg, 691 struct rdma_counter *counter) 692 { 693 struct rdma_counter_mode *m = &counter->mode; 694 695 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, m->mode)) 696 return -EMSGSIZE; 697 698 if (m->mode == RDMA_COUNTER_MODE_AUTO) 699 if ((m->mask & RDMA_COUNTER_MASK_QP_TYPE) && 700 nla_put_u8(msg, RDMA_NLDEV_ATTR_RES_TYPE, m->param.qp_type)) 701 return -EMSGSIZE; 702 703 return 0; 704 } 705 706 static int fill_stat_counter_qp_entry(struct sk_buff *msg, u32 qpn) 707 { 708 struct nlattr *entry_attr; 709 710 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP_ENTRY); 711 if (!entry_attr) 712 return -EMSGSIZE; 713 714 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) 715 goto err; 716 717 nla_nest_end(msg, entry_attr); 718 return 0; 719 720 err: 721 nla_nest_cancel(msg, entry_attr); 722 return -EMSGSIZE; 723 } 724 725 static int fill_stat_counter_qps(struct sk_buff *msg, 726 struct rdma_counter *counter) 727 { 728 struct rdma_restrack_entry *res; 729 struct rdma_restrack_root *rt; 730 struct nlattr *table_attr; 731 struct ib_qp *qp = NULL; 732 unsigned long id = 0; 733 int ret = 0; 734 735 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_RES_QP); 736 737 rt = &counter->device->res[RDMA_RESTRACK_QP]; 738 xa_lock(&rt->xa); 739 xa_for_each(&rt->xa, id, res) { 740 qp = container_of(res, struct ib_qp, res); 741 if (qp->qp_type == IB_QPT_RAW_PACKET && !capable(CAP_NET_RAW)) 742 continue; 743 744 if (!qp->counter || (qp->counter->id != counter->id)) 745 continue; 746 747 ret = fill_stat_counter_qp_entry(msg, qp->qp_num); 748 if (ret) 749 goto err; 750 } 751 752 xa_unlock(&rt->xa); 753 nla_nest_end(msg, table_attr); 754 return 0; 755 756 err: 757 xa_unlock(&rt->xa); 758 nla_nest_cancel(msg, table_attr); 759 return ret; 760 } 761 762 int rdma_nl_stat_hwcounter_entry(struct sk_buff *msg, const char *name, 763 u64 value) 764 { 765 struct nlattr *entry_attr; 766 767 entry_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY); 768 if (!entry_attr) 769 return -EMSGSIZE; 770 771 if (nla_put_string(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_NAME, 772 name)) 773 goto err; 774 if (nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTER_ENTRY_VALUE, 775 value, RDMA_NLDEV_ATTR_PAD)) 776 goto err; 777 778 nla_nest_end(msg, entry_attr); 779 return 0; 780 781 err: 782 nla_nest_cancel(msg, entry_attr); 783 return -EMSGSIZE; 784 } 785 EXPORT_SYMBOL(rdma_nl_stat_hwcounter_entry); 786 787 static int fill_stat_mr_entry(struct sk_buff *msg, bool has_cap_net_admin, 788 struct rdma_restrack_entry *res, uint32_t port) 789 { 790 struct ib_mr *mr = container_of(res, struct ib_mr, res); 791 struct ib_device *dev = mr->pd->device; 792 793 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_MRN, res->id)) 794 goto err; 795 796 if (fill_stat_entry(dev, msg, res)) 797 goto err; 798 799 return 0; 800 801 err: 802 return -EMSGSIZE; 803 } 804 805 static int fill_stat_counter_hwcounters(struct sk_buff *msg, 806 struct rdma_counter *counter) 807 { 808 struct rdma_hw_stats *st = counter->stats; 809 struct nlattr *table_attr; 810 int i; 811 812 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 813 if (!table_attr) 814 return -EMSGSIZE; 815 816 for (i = 0; i < st->num_counters; i++) 817 if (rdma_nl_stat_hwcounter_entry(msg, st->names[i], st->value[i])) 818 goto err; 819 820 nla_nest_end(msg, table_attr); 821 return 0; 822 823 err: 824 nla_nest_cancel(msg, table_attr); 825 return -EMSGSIZE; 826 } 827 828 static int fill_res_counter_entry(struct sk_buff *msg, bool has_cap_net_admin, 829 struct rdma_restrack_entry *res, 830 uint32_t port) 831 { 832 struct rdma_counter *counter = 833 container_of(res, struct rdma_counter, res); 834 835 if (port && port != counter->port) 836 return -EAGAIN; 837 838 /* Dump it even query failed */ 839 rdma_counter_query_stats(counter); 840 841 if (nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, counter->port) || 842 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, counter->id) || 843 fill_res_name_pid(msg, &counter->res) || 844 fill_stat_counter_mode(msg, counter) || 845 fill_stat_counter_qps(msg, counter) || 846 fill_stat_counter_hwcounters(msg, counter)) 847 return -EMSGSIZE; 848 849 return 0; 850 } 851 852 static int nldev_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 853 struct netlink_ext_ack *extack) 854 { 855 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 856 struct ib_device *device; 857 struct sk_buff *msg; 858 u32 index; 859 int err; 860 861 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 862 nldev_policy, extack); 863 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 864 return -EINVAL; 865 866 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 867 868 device = ib_device_get_by_index(sock_net(skb->sk), index); 869 if (!device) 870 return -EINVAL; 871 872 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 873 if (!msg) { 874 err = -ENOMEM; 875 goto err; 876 } 877 878 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 879 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 880 0, 0); 881 882 err = fill_dev_info(msg, device); 883 if (err) 884 goto err_free; 885 886 nlmsg_end(msg, nlh); 887 888 ib_device_put(device); 889 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 890 891 err_free: 892 nlmsg_free(msg); 893 err: 894 ib_device_put(device); 895 return err; 896 } 897 898 static int nldev_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 899 struct netlink_ext_ack *extack) 900 { 901 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 902 struct ib_device *device; 903 u32 index; 904 int err; 905 906 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 907 nldev_policy, extack); 908 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 909 return -EINVAL; 910 911 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 912 device = ib_device_get_by_index(sock_net(skb->sk), index); 913 if (!device) 914 return -EINVAL; 915 916 if (tb[RDMA_NLDEV_ATTR_DEV_NAME]) { 917 char name[IB_DEVICE_NAME_MAX] = {}; 918 919 nla_strlcpy(name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 920 IB_DEVICE_NAME_MAX); 921 if (strlen(name) == 0) { 922 err = -EINVAL; 923 goto done; 924 } 925 err = ib_device_rename(device, name); 926 goto done; 927 } 928 929 if (tb[RDMA_NLDEV_NET_NS_FD]) { 930 u32 ns_fd; 931 932 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]); 933 err = ib_device_set_netns_put(skb, device, ns_fd); 934 goto put_done; 935 } 936 937 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) { 938 u8 use_dim; 939 940 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]); 941 err = ib_device_set_dim(device, use_dim); 942 goto done; 943 } 944 945 done: 946 ib_device_put(device); 947 put_done: 948 return err; 949 } 950 951 static int _nldev_get_dumpit(struct ib_device *device, 952 struct sk_buff *skb, 953 struct netlink_callback *cb, 954 unsigned int idx) 955 { 956 int start = cb->args[0]; 957 struct nlmsghdr *nlh; 958 959 if (idx < start) 960 return 0; 961 962 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 963 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 964 0, NLM_F_MULTI); 965 966 if (fill_dev_info(skb, device)) { 967 nlmsg_cancel(skb, nlh); 968 goto out; 969 } 970 971 nlmsg_end(skb, nlh); 972 973 idx++; 974 975 out: cb->args[0] = idx; 976 return skb->len; 977 } 978 979 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) 980 { 981 /* 982 * There is no need to take lock, because 983 * we are relying on ib_core's locking. 984 */ 985 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb); 986 } 987 988 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 989 struct netlink_ext_ack *extack) 990 { 991 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 992 struct ib_device *device; 993 struct sk_buff *msg; 994 u32 index; 995 u32 port; 996 int err; 997 998 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 999 nldev_policy, extack); 1000 if (err || 1001 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 1002 !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1003 return -EINVAL; 1004 1005 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1006 device = ib_device_get_by_index(sock_net(skb->sk), index); 1007 if (!device) 1008 return -EINVAL; 1009 1010 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1011 if (!rdma_is_port_valid(device, port)) { 1012 err = -EINVAL; 1013 goto err; 1014 } 1015 1016 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1017 if (!msg) { 1018 err = -ENOMEM; 1019 goto err; 1020 } 1021 1022 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1023 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1024 0, 0); 1025 1026 err = fill_port_info(msg, device, port, sock_net(skb->sk)); 1027 if (err) 1028 goto err_free; 1029 1030 nlmsg_end(msg, nlh); 1031 ib_device_put(device); 1032 1033 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1034 1035 err_free: 1036 nlmsg_free(msg); 1037 err: 1038 ib_device_put(device); 1039 return err; 1040 } 1041 1042 static int nldev_port_get_dumpit(struct sk_buff *skb, 1043 struct netlink_callback *cb) 1044 { 1045 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1046 struct ib_device *device; 1047 int start = cb->args[0]; 1048 struct nlmsghdr *nlh; 1049 u32 idx = 0; 1050 u32 ifindex; 1051 int err; 1052 unsigned int p; 1053 1054 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1055 nldev_policy, NULL); 1056 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1057 return -EINVAL; 1058 1059 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1060 device = ib_device_get_by_index(sock_net(skb->sk), ifindex); 1061 if (!device) 1062 return -EINVAL; 1063 1064 rdma_for_each_port (device, p) { 1065 /* 1066 * The dumpit function returns all information from specific 1067 * index. This specific index is taken from the netlink 1068 * messages request sent by user and it is available 1069 * in cb->args[0]. 1070 * 1071 * Usually, the user doesn't fill this field and it causes 1072 * to return everything. 1073 * 1074 */ 1075 if (idx < start) { 1076 idx++; 1077 continue; 1078 } 1079 1080 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, 1081 cb->nlh->nlmsg_seq, 1082 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1083 RDMA_NLDEV_CMD_PORT_GET), 1084 0, NLM_F_MULTI); 1085 1086 if (fill_port_info(skb, device, p, sock_net(skb->sk))) { 1087 nlmsg_cancel(skb, nlh); 1088 goto out; 1089 } 1090 idx++; 1091 nlmsg_end(skb, nlh); 1092 } 1093 1094 out: 1095 ib_device_put(device); 1096 cb->args[0] = idx; 1097 return skb->len; 1098 } 1099 1100 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1101 struct netlink_ext_ack *extack) 1102 { 1103 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1104 struct ib_device *device; 1105 struct sk_buff *msg; 1106 u32 index; 1107 int ret; 1108 1109 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1110 nldev_policy, extack); 1111 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1112 return -EINVAL; 1113 1114 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1115 device = ib_device_get_by_index(sock_net(skb->sk), index); 1116 if (!device) 1117 return -EINVAL; 1118 1119 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1120 if (!msg) { 1121 ret = -ENOMEM; 1122 goto err; 1123 } 1124 1125 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1126 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1127 0, 0); 1128 1129 ret = fill_res_info(msg, device); 1130 if (ret) 1131 goto err_free; 1132 1133 nlmsg_end(msg, nlh); 1134 ib_device_put(device); 1135 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1136 1137 err_free: 1138 nlmsg_free(msg); 1139 err: 1140 ib_device_put(device); 1141 return ret; 1142 } 1143 1144 static int _nldev_res_get_dumpit(struct ib_device *device, 1145 struct sk_buff *skb, 1146 struct netlink_callback *cb, 1147 unsigned int idx) 1148 { 1149 int start = cb->args[0]; 1150 struct nlmsghdr *nlh; 1151 1152 if (idx < start) 1153 return 0; 1154 1155 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1156 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1157 0, NLM_F_MULTI); 1158 1159 if (fill_res_info(skb, device)) { 1160 nlmsg_cancel(skb, nlh); 1161 goto out; 1162 } 1163 nlmsg_end(skb, nlh); 1164 1165 idx++; 1166 1167 out: 1168 cb->args[0] = idx; 1169 return skb->len; 1170 } 1171 1172 static int nldev_res_get_dumpit(struct sk_buff *skb, 1173 struct netlink_callback *cb) 1174 { 1175 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb); 1176 } 1177 1178 struct nldev_fill_res_entry { 1179 enum rdma_nldev_attr nldev_attr; 1180 enum rdma_nldev_command nldev_cmd; 1181 u8 flags; 1182 u32 entry; 1183 u32 id; 1184 }; 1185 1186 enum nldev_res_flags { 1187 NLDEV_PER_DEV = 1 << 0, 1188 }; 1189 1190 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = { 1191 [RDMA_RESTRACK_QP] = { 1192 .nldev_cmd = RDMA_NLDEV_CMD_RES_QP_GET, 1193 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP, 1194 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY, 1195 .id = RDMA_NLDEV_ATTR_RES_LQPN, 1196 }, 1197 [RDMA_RESTRACK_CM_ID] = { 1198 .nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET, 1199 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID, 1200 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY, 1201 .id = RDMA_NLDEV_ATTR_RES_CM_IDN, 1202 }, 1203 [RDMA_RESTRACK_CQ] = { 1204 .nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET, 1205 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ, 1206 .flags = NLDEV_PER_DEV, 1207 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY, 1208 .id = RDMA_NLDEV_ATTR_RES_CQN, 1209 }, 1210 [RDMA_RESTRACK_MR] = { 1211 .nldev_cmd = RDMA_NLDEV_CMD_RES_MR_GET, 1212 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR, 1213 .flags = NLDEV_PER_DEV, 1214 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY, 1215 .id = RDMA_NLDEV_ATTR_RES_MRN, 1216 }, 1217 [RDMA_RESTRACK_PD] = { 1218 .nldev_cmd = RDMA_NLDEV_CMD_RES_PD_GET, 1219 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD, 1220 .flags = NLDEV_PER_DEV, 1221 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY, 1222 .id = RDMA_NLDEV_ATTR_RES_PDN, 1223 }, 1224 [RDMA_RESTRACK_COUNTER] = { 1225 .nldev_cmd = RDMA_NLDEV_CMD_STAT_GET, 1226 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER, 1227 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, 1228 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID, 1229 }, 1230 }; 1231 1232 static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1233 struct netlink_ext_ack *extack, 1234 enum rdma_restrack_type res_type, 1235 res_fill_func_t fill_func) 1236 { 1237 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1238 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1239 struct rdma_restrack_entry *res; 1240 struct ib_device *device; 1241 u32 index, id, port = 0; 1242 bool has_cap_net_admin; 1243 struct sk_buff *msg; 1244 int ret; 1245 1246 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1247 nldev_policy, extack); 1248 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id]) 1249 return -EINVAL; 1250 1251 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1252 device = ib_device_get_by_index(sock_net(skb->sk), index); 1253 if (!device) 1254 return -EINVAL; 1255 1256 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1257 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1258 if (!rdma_is_port_valid(device, port)) { 1259 ret = -EINVAL; 1260 goto err; 1261 } 1262 } 1263 1264 if ((port && fe->flags & NLDEV_PER_DEV) || 1265 (!port && ~fe->flags & NLDEV_PER_DEV)) { 1266 ret = -EINVAL; 1267 goto err; 1268 } 1269 1270 id = nla_get_u32(tb[fe->id]); 1271 res = rdma_restrack_get_byid(device, res_type, id); 1272 if (IS_ERR(res)) { 1273 ret = PTR_ERR(res); 1274 goto err; 1275 } 1276 1277 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1278 if (!msg) { 1279 ret = -ENOMEM; 1280 goto err_get; 1281 } 1282 1283 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1284 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, fe->nldev_cmd), 1285 0, 0); 1286 1287 if (fill_nldev_handle(msg, device)) { 1288 ret = -EMSGSIZE; 1289 goto err_free; 1290 } 1291 1292 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN); 1293 1294 ret = fill_func(msg, has_cap_net_admin, res, port); 1295 if (ret) 1296 goto err_free; 1297 1298 rdma_restrack_put(res); 1299 nlmsg_end(msg, nlh); 1300 ib_device_put(device); 1301 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1302 1303 err_free: 1304 nlmsg_free(msg); 1305 err_get: 1306 rdma_restrack_put(res); 1307 err: 1308 ib_device_put(device); 1309 return ret; 1310 } 1311 1312 static int res_get_common_dumpit(struct sk_buff *skb, 1313 struct netlink_callback *cb, 1314 enum rdma_restrack_type res_type, 1315 res_fill_func_t fill_func) 1316 { 1317 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1318 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1319 struct rdma_restrack_entry *res; 1320 struct rdma_restrack_root *rt; 1321 int err, ret = 0, idx = 0; 1322 struct nlattr *table_attr; 1323 struct nlattr *entry_attr; 1324 struct ib_device *device; 1325 int start = cb->args[0]; 1326 bool has_cap_net_admin; 1327 struct nlmsghdr *nlh; 1328 unsigned long id; 1329 u32 index, port = 0; 1330 bool filled = false; 1331 1332 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1333 nldev_policy, NULL); 1334 /* 1335 * Right now, we are expecting the device index to get res information, 1336 * but it is possible to extend this code to return all devices in 1337 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX. 1338 * if it doesn't exist, we will iterate over all devices. 1339 * 1340 * But it is not needed for now. 1341 */ 1342 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1343 return -EINVAL; 1344 1345 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1346 device = ib_device_get_by_index(sock_net(skb->sk), index); 1347 if (!device) 1348 return -EINVAL; 1349 1350 /* 1351 * If no PORT_INDEX is supplied, we will return all QPs from that device 1352 */ 1353 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1354 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1355 if (!rdma_is_port_valid(device, port)) { 1356 ret = -EINVAL; 1357 goto err_index; 1358 } 1359 } 1360 1361 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1362 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, fe->nldev_cmd), 1363 0, NLM_F_MULTI); 1364 1365 if (fill_nldev_handle(skb, device)) { 1366 ret = -EMSGSIZE; 1367 goto err; 1368 } 1369 1370 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr); 1371 if (!table_attr) { 1372 ret = -EMSGSIZE; 1373 goto err; 1374 } 1375 1376 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN); 1377 1378 rt = &device->res[res_type]; 1379 xa_lock(&rt->xa); 1380 /* 1381 * FIXME: if the skip ahead is something common this loop should 1382 * use xas_for_each & xas_pause to optimize, we can have a lot of 1383 * objects. 1384 */ 1385 xa_for_each(&rt->xa, id, res) { 1386 if (idx < start || !rdma_restrack_get(res)) 1387 goto next; 1388 1389 xa_unlock(&rt->xa); 1390 1391 filled = true; 1392 1393 entry_attr = nla_nest_start_noflag(skb, fe->entry); 1394 if (!entry_attr) { 1395 ret = -EMSGSIZE; 1396 rdma_restrack_put(res); 1397 goto msg_full; 1398 } 1399 1400 ret = fill_func(skb, has_cap_net_admin, res, port); 1401 1402 rdma_restrack_put(res); 1403 1404 if (ret) { 1405 nla_nest_cancel(skb, entry_attr); 1406 if (ret == -EMSGSIZE) 1407 goto msg_full; 1408 if (ret == -EAGAIN) 1409 goto again; 1410 goto res_err; 1411 } 1412 nla_nest_end(skb, entry_attr); 1413 again: xa_lock(&rt->xa); 1414 next: idx++; 1415 } 1416 xa_unlock(&rt->xa); 1417 1418 msg_full: 1419 nla_nest_end(skb, table_attr); 1420 nlmsg_end(skb, nlh); 1421 cb->args[0] = idx; 1422 1423 /* 1424 * No more entries to fill, cancel the message and 1425 * return 0 to mark end of dumpit. 1426 */ 1427 if (!filled) 1428 goto err; 1429 1430 ib_device_put(device); 1431 return skb->len; 1432 1433 res_err: 1434 nla_nest_cancel(skb, table_attr); 1435 1436 err: 1437 nlmsg_cancel(skb, nlh); 1438 1439 err_index: 1440 ib_device_put(device); 1441 return ret; 1442 } 1443 1444 #define RES_GET_FUNCS(name, type) \ 1445 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \ 1446 struct netlink_callback *cb) \ 1447 { \ 1448 return res_get_common_dumpit(skb, cb, type, \ 1449 fill_res_##name##_entry); \ 1450 } \ 1451 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \ 1452 struct nlmsghdr *nlh, \ 1453 struct netlink_ext_ack *extack) \ 1454 { \ 1455 return res_get_common_doit(skb, nlh, extack, type, \ 1456 fill_res_##name##_entry); \ 1457 } 1458 1459 RES_GET_FUNCS(qp, RDMA_RESTRACK_QP); 1460 RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID); 1461 RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ); 1462 RES_GET_FUNCS(pd, RDMA_RESTRACK_PD); 1463 RES_GET_FUNCS(mr, RDMA_RESTRACK_MR); 1464 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER); 1465 1466 static LIST_HEAD(link_ops); 1467 static DECLARE_RWSEM(link_ops_rwsem); 1468 1469 static const struct rdma_link_ops *link_ops_get(const char *type) 1470 { 1471 const struct rdma_link_ops *ops; 1472 1473 list_for_each_entry(ops, &link_ops, list) { 1474 if (!strcmp(ops->type, type)) 1475 goto out; 1476 } 1477 ops = NULL; 1478 out: 1479 return ops; 1480 } 1481 1482 void rdma_link_register(struct rdma_link_ops *ops) 1483 { 1484 down_write(&link_ops_rwsem); 1485 if (WARN_ON_ONCE(link_ops_get(ops->type))) 1486 goto out; 1487 list_add(&ops->list, &link_ops); 1488 out: 1489 up_write(&link_ops_rwsem); 1490 } 1491 EXPORT_SYMBOL(rdma_link_register); 1492 1493 void rdma_link_unregister(struct rdma_link_ops *ops) 1494 { 1495 down_write(&link_ops_rwsem); 1496 list_del(&ops->list); 1497 up_write(&link_ops_rwsem); 1498 } 1499 EXPORT_SYMBOL(rdma_link_unregister); 1500 1501 static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, 1502 struct netlink_ext_ack *extack) 1503 { 1504 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1505 char ibdev_name[IB_DEVICE_NAME_MAX]; 1506 const struct rdma_link_ops *ops; 1507 char ndev_name[IFNAMSIZ]; 1508 struct net_device *ndev; 1509 char type[IFNAMSIZ]; 1510 int err; 1511 1512 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1513 nldev_policy, extack); 1514 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] || 1515 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME]) 1516 return -EINVAL; 1517 1518 nla_strlcpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 1519 sizeof(ibdev_name)); 1520 if (strchr(ibdev_name, '%') || strlen(ibdev_name) == 0) 1521 return -EINVAL; 1522 1523 nla_strlcpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type)); 1524 nla_strlcpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME], 1525 sizeof(ndev_name)); 1526 1527 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name); 1528 if (!ndev) 1529 return -ENODEV; 1530 1531 down_read(&link_ops_rwsem); 1532 ops = link_ops_get(type); 1533 #ifdef CONFIG_MODULES 1534 if (!ops) { 1535 up_read(&link_ops_rwsem); 1536 request_module("rdma-link-%s", type); 1537 down_read(&link_ops_rwsem); 1538 ops = link_ops_get(type); 1539 } 1540 #endif 1541 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL; 1542 up_read(&link_ops_rwsem); 1543 dev_put(ndev); 1544 1545 return err; 1546 } 1547 1548 static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, 1549 struct netlink_ext_ack *extack) 1550 { 1551 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1552 struct ib_device *device; 1553 u32 index; 1554 int err; 1555 1556 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1557 nldev_policy, extack); 1558 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1559 return -EINVAL; 1560 1561 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1562 device = ib_device_get_by_index(sock_net(skb->sk), index); 1563 if (!device) 1564 return -EINVAL; 1565 1566 if (!(device->attrs.device_cap_flags & IB_DEVICE_ALLOW_USER_UNREG)) { 1567 ib_device_put(device); 1568 return -EINVAL; 1569 } 1570 1571 ib_unregister_device_and_put(device); 1572 return 0; 1573 } 1574 1575 static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh, 1576 struct netlink_ext_ack *extack) 1577 { 1578 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1579 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE]; 1580 struct ib_client_nl_info data = {}; 1581 struct ib_device *ibdev = NULL; 1582 struct sk_buff *msg; 1583 u32 index; 1584 int err; 1585 1586 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy, 1587 extack); 1588 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE]) 1589 return -EINVAL; 1590 1591 nla_strlcpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE], 1592 sizeof(client_name)); 1593 1594 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) { 1595 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1596 ibdev = ib_device_get_by_index(sock_net(skb->sk), index); 1597 if (!ibdev) 1598 return -EINVAL; 1599 1600 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1601 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1602 if (!rdma_is_port_valid(ibdev, data.port)) { 1603 err = -EINVAL; 1604 goto out_put; 1605 } 1606 } else { 1607 data.port = -1; 1608 } 1609 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1610 return -EINVAL; 1611 } 1612 1613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1614 if (!msg) { 1615 err = -ENOMEM; 1616 goto out_put; 1617 } 1618 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1619 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1620 RDMA_NLDEV_CMD_GET_CHARDEV), 1621 0, 0); 1622 1623 data.nl_msg = msg; 1624 err = ib_get_client_nl_info(ibdev, client_name, &data); 1625 if (err) 1626 goto out_nlmsg; 1627 1628 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV, 1629 huge_encode_dev(data.cdev->devt), 1630 RDMA_NLDEV_ATTR_PAD); 1631 if (err) 1632 goto out_data; 1633 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi, 1634 RDMA_NLDEV_ATTR_PAD); 1635 if (err) 1636 goto out_data; 1637 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME, 1638 dev_name(data.cdev))) { 1639 err = -EMSGSIZE; 1640 goto out_data; 1641 } 1642 1643 nlmsg_end(msg, nlh); 1644 put_device(data.cdev); 1645 if (ibdev) 1646 ib_device_put(ibdev); 1647 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1648 1649 out_data: 1650 put_device(data.cdev); 1651 out_nlmsg: 1652 nlmsg_free(msg); 1653 out_put: 1654 if (ibdev) 1655 ib_device_put(ibdev); 1656 return err; 1657 } 1658 1659 static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1660 struct netlink_ext_ack *extack) 1661 { 1662 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1663 struct sk_buff *msg; 1664 int err; 1665 1666 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1667 nldev_policy, extack); 1668 if (err) 1669 return err; 1670 1671 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1672 if (!msg) 1673 return -ENOMEM; 1674 1675 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1676 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1677 RDMA_NLDEV_CMD_SYS_GET), 1678 0, 0); 1679 1680 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, 1681 (u8)ib_devices_shared_netns); 1682 if (err) { 1683 nlmsg_free(msg); 1684 return err; 1685 } 1686 nlmsg_end(msg, nlh); 1687 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1688 } 1689 1690 static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1691 struct netlink_ext_ack *extack) 1692 { 1693 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1694 u8 enable; 1695 int err; 1696 1697 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1698 nldev_policy, extack); 1699 if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) 1700 return -EINVAL; 1701 1702 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]); 1703 /* Only 0 and 1 are supported */ 1704 if (enable > 1) 1705 return -EINVAL; 1706 1707 err = rdma_compatdev_set(enable); 1708 return err; 1709 } 1710 1711 static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1712 struct netlink_ext_ack *extack) 1713 { 1714 u32 index, port, mode, mask = 0, qpn, cntn = 0; 1715 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1716 struct ib_device *device; 1717 struct sk_buff *msg; 1718 int ret; 1719 1720 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1721 nldev_policy, extack); 1722 /* Currently only counter for QP is supported */ 1723 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 1724 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 1725 !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || !tb[RDMA_NLDEV_ATTR_STAT_MODE]) 1726 return -EINVAL; 1727 1728 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 1729 return -EINVAL; 1730 1731 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1732 device = ib_device_get_by_index(sock_net(skb->sk), index); 1733 if (!device) 1734 return -EINVAL; 1735 1736 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1737 if (!rdma_is_port_valid(device, port)) { 1738 ret = -EINVAL; 1739 goto err; 1740 } 1741 1742 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1743 if (!msg) { 1744 ret = -ENOMEM; 1745 goto err; 1746 } 1747 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1748 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1749 RDMA_NLDEV_CMD_STAT_SET), 1750 0, 0); 1751 1752 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]); 1753 if (mode == RDMA_COUNTER_MODE_AUTO) { 1754 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]) 1755 mask = nla_get_u32( 1756 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]); 1757 1758 ret = rdma_counter_set_auto_mode(device, port, 1759 mask ? true : false, mask); 1760 if (ret) 1761 goto err_msg; 1762 } else { 1763 if (!tb[RDMA_NLDEV_ATTR_RES_LQPN]) 1764 goto err_msg; 1765 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 1766 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) { 1767 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 1768 ret = rdma_counter_bind_qpn(device, port, qpn, cntn); 1769 } else { 1770 ret = rdma_counter_bind_qpn_alloc(device, port, 1771 qpn, &cntn); 1772 } 1773 if (ret) 1774 goto err_msg; 1775 1776 if (fill_nldev_handle(msg, device) || 1777 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 1778 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 1779 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 1780 ret = -EMSGSIZE; 1781 goto err_fill; 1782 } 1783 } 1784 1785 nlmsg_end(msg, nlh); 1786 ib_device_put(device); 1787 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1788 1789 err_fill: 1790 rdma_counter_unbind_qpn(device, port, qpn, cntn); 1791 err_msg: 1792 nlmsg_free(msg); 1793 err: 1794 ib_device_put(device); 1795 return ret; 1796 } 1797 1798 static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1799 struct netlink_ext_ack *extack) 1800 { 1801 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1802 struct ib_device *device; 1803 struct sk_buff *msg; 1804 u32 index, port, qpn, cntn; 1805 int ret; 1806 1807 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1808 nldev_policy, extack); 1809 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 1810 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || 1811 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] || 1812 !tb[RDMA_NLDEV_ATTR_RES_LQPN]) 1813 return -EINVAL; 1814 1815 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 1816 return -EINVAL; 1817 1818 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1819 device = ib_device_get_by_index(sock_net(skb->sk), index); 1820 if (!device) 1821 return -EINVAL; 1822 1823 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1824 if (!rdma_is_port_valid(device, port)) { 1825 ret = -EINVAL; 1826 goto err; 1827 } 1828 1829 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1830 if (!msg) { 1831 ret = -ENOMEM; 1832 goto err; 1833 } 1834 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1835 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1836 RDMA_NLDEV_CMD_STAT_SET), 1837 0, 0); 1838 1839 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 1840 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 1841 if (fill_nldev_handle(msg, device) || 1842 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 1843 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 1844 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 1845 ret = -EMSGSIZE; 1846 goto err_fill; 1847 } 1848 1849 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn); 1850 if (ret) 1851 goto err_fill; 1852 1853 nlmsg_end(msg, nlh); 1854 ib_device_put(device); 1855 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1856 1857 err_fill: 1858 nlmsg_free(msg); 1859 err: 1860 ib_device_put(device); 1861 return ret; 1862 } 1863 1864 static int stat_get_doit_default_counter(struct sk_buff *skb, 1865 struct nlmsghdr *nlh, 1866 struct netlink_ext_ack *extack, 1867 struct nlattr *tb[]) 1868 { 1869 struct rdma_hw_stats *stats; 1870 struct nlattr *table_attr; 1871 struct ib_device *device; 1872 int ret, num_cnts, i; 1873 struct sk_buff *msg; 1874 u32 index, port; 1875 u64 v; 1876 1877 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1878 return -EINVAL; 1879 1880 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1881 device = ib_device_get_by_index(sock_net(skb->sk), index); 1882 if (!device) 1883 return -EINVAL; 1884 1885 if (!device->ops.alloc_hw_stats || !device->ops.get_hw_stats) { 1886 ret = -EINVAL; 1887 goto err; 1888 } 1889 1890 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1891 if (!rdma_is_port_valid(device, port)) { 1892 ret = -EINVAL; 1893 goto err; 1894 } 1895 1896 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1897 if (!msg) { 1898 ret = -ENOMEM; 1899 goto err; 1900 } 1901 1902 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1903 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1904 RDMA_NLDEV_CMD_STAT_GET), 1905 0, 0); 1906 1907 if (fill_nldev_handle(msg, device) || 1908 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { 1909 ret = -EMSGSIZE; 1910 goto err_msg; 1911 } 1912 1913 stats = device->port_data ? device->port_data[port].hw_stats : NULL; 1914 if (stats == NULL) { 1915 ret = -EINVAL; 1916 goto err_msg; 1917 } 1918 mutex_lock(&stats->lock); 1919 1920 num_cnts = device->ops.get_hw_stats(device, stats, port, 0); 1921 if (num_cnts < 0) { 1922 ret = -EINVAL; 1923 goto err_stats; 1924 } 1925 1926 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 1927 if (!table_attr) { 1928 ret = -EMSGSIZE; 1929 goto err_stats; 1930 } 1931 for (i = 0; i < num_cnts; i++) { 1932 v = stats->value[i] + 1933 rdma_counter_get_hwstat_value(device, port, i); 1934 if (rdma_nl_stat_hwcounter_entry(msg, stats->names[i], v)) { 1935 ret = -EMSGSIZE; 1936 goto err_table; 1937 } 1938 } 1939 nla_nest_end(msg, table_attr); 1940 1941 mutex_unlock(&stats->lock); 1942 nlmsg_end(msg, nlh); 1943 ib_device_put(device); 1944 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1945 1946 err_table: 1947 nla_nest_cancel(msg, table_attr); 1948 err_stats: 1949 mutex_unlock(&stats->lock); 1950 err_msg: 1951 nlmsg_free(msg); 1952 err: 1953 ib_device_put(device); 1954 return ret; 1955 } 1956 1957 static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh, 1958 struct netlink_ext_ack *extack, struct nlattr *tb[]) 1959 1960 { 1961 static enum rdma_nl_counter_mode mode; 1962 static enum rdma_nl_counter_mask mask; 1963 struct ib_device *device; 1964 struct sk_buff *msg; 1965 u32 index, port; 1966 int ret; 1967 1968 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) 1969 return nldev_res_get_counter_doit(skb, nlh, extack); 1970 1971 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] || 1972 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1973 return -EINVAL; 1974 1975 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1976 device = ib_device_get_by_index(sock_net(skb->sk), index); 1977 if (!device) 1978 return -EINVAL; 1979 1980 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1981 if (!rdma_is_port_valid(device, port)) { 1982 ret = -EINVAL; 1983 goto err; 1984 } 1985 1986 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1987 if (!msg) { 1988 ret = -ENOMEM; 1989 goto err; 1990 } 1991 1992 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1993 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1994 RDMA_NLDEV_CMD_STAT_GET), 1995 0, 0); 1996 1997 ret = rdma_counter_get_mode(device, port, &mode, &mask); 1998 if (ret) 1999 goto err_msg; 2000 2001 if (fill_nldev_handle(msg, device) || 2002 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 2003 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) { 2004 ret = -EMSGSIZE; 2005 goto err_msg; 2006 } 2007 2008 if ((mode == RDMA_COUNTER_MODE_AUTO) && 2009 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) { 2010 ret = -EMSGSIZE; 2011 goto err_msg; 2012 } 2013 2014 nlmsg_end(msg, nlh); 2015 ib_device_put(device); 2016 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2017 2018 err_msg: 2019 nlmsg_free(msg); 2020 err: 2021 ib_device_put(device); 2022 return ret; 2023 } 2024 2025 static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2026 struct netlink_ext_ack *extack) 2027 { 2028 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2029 int ret; 2030 2031 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2032 nldev_policy, extack); 2033 if (ret) 2034 return -EINVAL; 2035 2036 if (!tb[RDMA_NLDEV_ATTR_STAT_RES]) 2037 return stat_get_doit_default_counter(skb, nlh, extack, tb); 2038 2039 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2040 case RDMA_NLDEV_ATTR_RES_QP: 2041 ret = stat_get_doit_qp(skb, nlh, extack, tb); 2042 break; 2043 case RDMA_NLDEV_ATTR_RES_MR: 2044 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR, 2045 fill_stat_mr_entry); 2046 break; 2047 default: 2048 ret = -EINVAL; 2049 break; 2050 } 2051 2052 return ret; 2053 } 2054 2055 static int nldev_stat_get_dumpit(struct sk_buff *skb, 2056 struct netlink_callback *cb) 2057 { 2058 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2059 int ret; 2060 2061 ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2062 nldev_policy, NULL); 2063 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES]) 2064 return -EINVAL; 2065 2066 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2067 case RDMA_NLDEV_ATTR_RES_QP: 2068 ret = nldev_res_get_counter_dumpit(skb, cb); 2069 break; 2070 case RDMA_NLDEV_ATTR_RES_MR: 2071 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR, 2072 fill_stat_mr_entry); 2073 break; 2074 default: 2075 ret = -EINVAL; 2076 break; 2077 } 2078 2079 return ret; 2080 } 2081 2082 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { 2083 [RDMA_NLDEV_CMD_GET] = { 2084 .doit = nldev_get_doit, 2085 .dump = nldev_get_dumpit, 2086 }, 2087 [RDMA_NLDEV_CMD_GET_CHARDEV] = { 2088 .doit = nldev_get_chardev, 2089 }, 2090 [RDMA_NLDEV_CMD_SET] = { 2091 .doit = nldev_set_doit, 2092 .flags = RDMA_NL_ADMIN_PERM, 2093 }, 2094 [RDMA_NLDEV_CMD_NEWLINK] = { 2095 .doit = nldev_newlink, 2096 .flags = RDMA_NL_ADMIN_PERM, 2097 }, 2098 [RDMA_NLDEV_CMD_DELLINK] = { 2099 .doit = nldev_dellink, 2100 .flags = RDMA_NL_ADMIN_PERM, 2101 }, 2102 [RDMA_NLDEV_CMD_PORT_GET] = { 2103 .doit = nldev_port_get_doit, 2104 .dump = nldev_port_get_dumpit, 2105 }, 2106 [RDMA_NLDEV_CMD_RES_GET] = { 2107 .doit = nldev_res_get_doit, 2108 .dump = nldev_res_get_dumpit, 2109 }, 2110 [RDMA_NLDEV_CMD_RES_QP_GET] = { 2111 .doit = nldev_res_get_qp_doit, 2112 .dump = nldev_res_get_qp_dumpit, 2113 }, 2114 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = { 2115 .doit = nldev_res_get_cm_id_doit, 2116 .dump = nldev_res_get_cm_id_dumpit, 2117 }, 2118 [RDMA_NLDEV_CMD_RES_CQ_GET] = { 2119 .doit = nldev_res_get_cq_doit, 2120 .dump = nldev_res_get_cq_dumpit, 2121 }, 2122 [RDMA_NLDEV_CMD_RES_MR_GET] = { 2123 .doit = nldev_res_get_mr_doit, 2124 .dump = nldev_res_get_mr_dumpit, 2125 }, 2126 [RDMA_NLDEV_CMD_RES_PD_GET] = { 2127 .doit = nldev_res_get_pd_doit, 2128 .dump = nldev_res_get_pd_dumpit, 2129 }, 2130 [RDMA_NLDEV_CMD_SYS_GET] = { 2131 .doit = nldev_sys_get_doit, 2132 }, 2133 [RDMA_NLDEV_CMD_SYS_SET] = { 2134 .doit = nldev_set_sys_set_doit, 2135 }, 2136 [RDMA_NLDEV_CMD_STAT_SET] = { 2137 .doit = nldev_stat_set_doit, 2138 .flags = RDMA_NL_ADMIN_PERM, 2139 }, 2140 [RDMA_NLDEV_CMD_STAT_GET] = { 2141 .doit = nldev_stat_get_doit, 2142 .dump = nldev_stat_get_dumpit, 2143 }, 2144 [RDMA_NLDEV_CMD_STAT_DEL] = { 2145 .doit = nldev_stat_del_doit, 2146 .flags = RDMA_NL_ADMIN_PERM, 2147 }, 2148 }; 2149 2150 void __init nldev_init(void) 2151 { 2152 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table); 2153 } 2154 2155 void __exit nldev_exit(void) 2156 { 2157 rdma_nl_unregister(RDMA_NL_NLDEV); 2158 } 2159 2160 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5); 2161