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 err = ib_device_rename(device, name); 922 goto done; 923 } 924 925 if (tb[RDMA_NLDEV_NET_NS_FD]) { 926 u32 ns_fd; 927 928 ns_fd = nla_get_u32(tb[RDMA_NLDEV_NET_NS_FD]); 929 err = ib_device_set_netns_put(skb, device, ns_fd); 930 goto put_done; 931 } 932 933 if (tb[RDMA_NLDEV_ATTR_DEV_DIM]) { 934 u8 use_dim; 935 936 use_dim = nla_get_u8(tb[RDMA_NLDEV_ATTR_DEV_DIM]); 937 err = ib_device_set_dim(device, use_dim); 938 goto done; 939 } 940 941 done: 942 ib_device_put(device); 943 put_done: 944 return err; 945 } 946 947 static int _nldev_get_dumpit(struct ib_device *device, 948 struct sk_buff *skb, 949 struct netlink_callback *cb, 950 unsigned int idx) 951 { 952 int start = cb->args[0]; 953 struct nlmsghdr *nlh; 954 955 if (idx < start) 956 return 0; 957 958 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 959 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 960 0, NLM_F_MULTI); 961 962 if (fill_dev_info(skb, device)) { 963 nlmsg_cancel(skb, nlh); 964 goto out; 965 } 966 967 nlmsg_end(skb, nlh); 968 969 idx++; 970 971 out: cb->args[0] = idx; 972 return skb->len; 973 } 974 975 static int nldev_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb) 976 { 977 /* 978 * There is no need to take lock, because 979 * we are relying on ib_core's locking. 980 */ 981 return ib_enum_all_devs(_nldev_get_dumpit, skb, cb); 982 } 983 984 static int nldev_port_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 985 struct netlink_ext_ack *extack) 986 { 987 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 988 struct ib_device *device; 989 struct sk_buff *msg; 990 u32 index; 991 u32 port; 992 int err; 993 994 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 995 nldev_policy, extack); 996 if (err || 997 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 998 !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 999 return -EINVAL; 1000 1001 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1002 device = ib_device_get_by_index(sock_net(skb->sk), index); 1003 if (!device) 1004 return -EINVAL; 1005 1006 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1007 if (!rdma_is_port_valid(device, port)) { 1008 err = -EINVAL; 1009 goto err; 1010 } 1011 1012 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1013 if (!msg) { 1014 err = -ENOMEM; 1015 goto err; 1016 } 1017 1018 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1019 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_GET), 1020 0, 0); 1021 1022 err = fill_port_info(msg, device, port, sock_net(skb->sk)); 1023 if (err) 1024 goto err_free; 1025 1026 nlmsg_end(msg, nlh); 1027 ib_device_put(device); 1028 1029 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1030 1031 err_free: 1032 nlmsg_free(msg); 1033 err: 1034 ib_device_put(device); 1035 return err; 1036 } 1037 1038 static int nldev_port_get_dumpit(struct sk_buff *skb, 1039 struct netlink_callback *cb) 1040 { 1041 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1042 struct ib_device *device; 1043 int start = cb->args[0]; 1044 struct nlmsghdr *nlh; 1045 u32 idx = 0; 1046 u32 ifindex; 1047 int err; 1048 unsigned int p; 1049 1050 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1051 nldev_policy, NULL); 1052 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1053 return -EINVAL; 1054 1055 ifindex = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1056 device = ib_device_get_by_index(sock_net(skb->sk), ifindex); 1057 if (!device) 1058 return -EINVAL; 1059 1060 rdma_for_each_port (device, p) { 1061 /* 1062 * The dumpit function returns all information from specific 1063 * index. This specific index is taken from the netlink 1064 * messages request sent by user and it is available 1065 * in cb->args[0]. 1066 * 1067 * Usually, the user doesn't fill this field and it causes 1068 * to return everything. 1069 * 1070 */ 1071 if (idx < start) { 1072 idx++; 1073 continue; 1074 } 1075 1076 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, 1077 cb->nlh->nlmsg_seq, 1078 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1079 RDMA_NLDEV_CMD_PORT_GET), 1080 0, NLM_F_MULTI); 1081 1082 if (fill_port_info(skb, device, p, sock_net(skb->sk))) { 1083 nlmsg_cancel(skb, nlh); 1084 goto out; 1085 } 1086 idx++; 1087 nlmsg_end(skb, nlh); 1088 } 1089 1090 out: 1091 ib_device_put(device); 1092 cb->args[0] = idx; 1093 return skb->len; 1094 } 1095 1096 static int nldev_res_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1097 struct netlink_ext_ack *extack) 1098 { 1099 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1100 struct ib_device *device; 1101 struct sk_buff *msg; 1102 u32 index; 1103 int ret; 1104 1105 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1106 nldev_policy, extack); 1107 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1108 return -EINVAL; 1109 1110 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1111 device = ib_device_get_by_index(sock_net(skb->sk), index); 1112 if (!device) 1113 return -EINVAL; 1114 1115 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1116 if (!msg) { 1117 ret = -ENOMEM; 1118 goto err; 1119 } 1120 1121 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1122 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1123 0, 0); 1124 1125 ret = fill_res_info(msg, device); 1126 if (ret) 1127 goto err_free; 1128 1129 nlmsg_end(msg, nlh); 1130 ib_device_put(device); 1131 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1132 1133 err_free: 1134 nlmsg_free(msg); 1135 err: 1136 ib_device_put(device); 1137 return ret; 1138 } 1139 1140 static int _nldev_res_get_dumpit(struct ib_device *device, 1141 struct sk_buff *skb, 1142 struct netlink_callback *cb, 1143 unsigned int idx) 1144 { 1145 int start = cb->args[0]; 1146 struct nlmsghdr *nlh; 1147 1148 if (idx < start) 1149 return 0; 1150 1151 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1152 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, RDMA_NLDEV_CMD_RES_GET), 1153 0, NLM_F_MULTI); 1154 1155 if (fill_res_info(skb, device)) { 1156 nlmsg_cancel(skb, nlh); 1157 goto out; 1158 } 1159 nlmsg_end(skb, nlh); 1160 1161 idx++; 1162 1163 out: 1164 cb->args[0] = idx; 1165 return skb->len; 1166 } 1167 1168 static int nldev_res_get_dumpit(struct sk_buff *skb, 1169 struct netlink_callback *cb) 1170 { 1171 return ib_enum_all_devs(_nldev_res_get_dumpit, skb, cb); 1172 } 1173 1174 struct nldev_fill_res_entry { 1175 enum rdma_nldev_attr nldev_attr; 1176 enum rdma_nldev_command nldev_cmd; 1177 u8 flags; 1178 u32 entry; 1179 u32 id; 1180 }; 1181 1182 enum nldev_res_flags { 1183 NLDEV_PER_DEV = 1 << 0, 1184 }; 1185 1186 static const struct nldev_fill_res_entry fill_entries[RDMA_RESTRACK_MAX] = { 1187 [RDMA_RESTRACK_QP] = { 1188 .nldev_cmd = RDMA_NLDEV_CMD_RES_QP_GET, 1189 .nldev_attr = RDMA_NLDEV_ATTR_RES_QP, 1190 .entry = RDMA_NLDEV_ATTR_RES_QP_ENTRY, 1191 .id = RDMA_NLDEV_ATTR_RES_LQPN, 1192 }, 1193 [RDMA_RESTRACK_CM_ID] = { 1194 .nldev_cmd = RDMA_NLDEV_CMD_RES_CM_ID_GET, 1195 .nldev_attr = RDMA_NLDEV_ATTR_RES_CM_ID, 1196 .entry = RDMA_NLDEV_ATTR_RES_CM_ID_ENTRY, 1197 .id = RDMA_NLDEV_ATTR_RES_CM_IDN, 1198 }, 1199 [RDMA_RESTRACK_CQ] = { 1200 .nldev_cmd = RDMA_NLDEV_CMD_RES_CQ_GET, 1201 .nldev_attr = RDMA_NLDEV_ATTR_RES_CQ, 1202 .flags = NLDEV_PER_DEV, 1203 .entry = RDMA_NLDEV_ATTR_RES_CQ_ENTRY, 1204 .id = RDMA_NLDEV_ATTR_RES_CQN, 1205 }, 1206 [RDMA_RESTRACK_MR] = { 1207 .nldev_cmd = RDMA_NLDEV_CMD_RES_MR_GET, 1208 .nldev_attr = RDMA_NLDEV_ATTR_RES_MR, 1209 .flags = NLDEV_PER_DEV, 1210 .entry = RDMA_NLDEV_ATTR_RES_MR_ENTRY, 1211 .id = RDMA_NLDEV_ATTR_RES_MRN, 1212 }, 1213 [RDMA_RESTRACK_PD] = { 1214 .nldev_cmd = RDMA_NLDEV_CMD_RES_PD_GET, 1215 .nldev_attr = RDMA_NLDEV_ATTR_RES_PD, 1216 .flags = NLDEV_PER_DEV, 1217 .entry = RDMA_NLDEV_ATTR_RES_PD_ENTRY, 1218 .id = RDMA_NLDEV_ATTR_RES_PDN, 1219 }, 1220 [RDMA_RESTRACK_COUNTER] = { 1221 .nldev_cmd = RDMA_NLDEV_CMD_STAT_GET, 1222 .nldev_attr = RDMA_NLDEV_ATTR_STAT_COUNTER, 1223 .entry = RDMA_NLDEV_ATTR_STAT_COUNTER_ENTRY, 1224 .id = RDMA_NLDEV_ATTR_STAT_COUNTER_ID, 1225 }, 1226 }; 1227 1228 static int res_get_common_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1229 struct netlink_ext_ack *extack, 1230 enum rdma_restrack_type res_type, 1231 res_fill_func_t fill_func) 1232 { 1233 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1234 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1235 struct rdma_restrack_entry *res; 1236 struct ib_device *device; 1237 u32 index, id, port = 0; 1238 bool has_cap_net_admin; 1239 struct sk_buff *msg; 1240 int ret; 1241 1242 ret = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1243 nldev_policy, extack); 1244 if (ret || !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !fe->id || !tb[fe->id]) 1245 return -EINVAL; 1246 1247 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1248 device = ib_device_get_by_index(sock_net(skb->sk), index); 1249 if (!device) 1250 return -EINVAL; 1251 1252 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1253 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1254 if (!rdma_is_port_valid(device, port)) { 1255 ret = -EINVAL; 1256 goto err; 1257 } 1258 } 1259 1260 if ((port && fe->flags & NLDEV_PER_DEV) || 1261 (!port && ~fe->flags & NLDEV_PER_DEV)) { 1262 ret = -EINVAL; 1263 goto err; 1264 } 1265 1266 id = nla_get_u32(tb[fe->id]); 1267 res = rdma_restrack_get_byid(device, res_type, id); 1268 if (IS_ERR(res)) { 1269 ret = PTR_ERR(res); 1270 goto err; 1271 } 1272 1273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1274 if (!msg) { 1275 ret = -ENOMEM; 1276 goto err_get; 1277 } 1278 1279 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1280 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, fe->nldev_cmd), 1281 0, 0); 1282 1283 if (fill_nldev_handle(msg, device)) { 1284 ret = -EMSGSIZE; 1285 goto err_free; 1286 } 1287 1288 has_cap_net_admin = netlink_capable(skb, CAP_NET_ADMIN); 1289 1290 ret = fill_func(msg, has_cap_net_admin, res, port); 1291 1292 rdma_restrack_put(res); 1293 if (ret) 1294 goto err_free; 1295 1296 nlmsg_end(msg, nlh); 1297 ib_device_put(device); 1298 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1299 1300 err_free: 1301 nlmsg_free(msg); 1302 err_get: 1303 rdma_restrack_put(res); 1304 err: 1305 ib_device_put(device); 1306 return ret; 1307 } 1308 1309 static int res_get_common_dumpit(struct sk_buff *skb, 1310 struct netlink_callback *cb, 1311 enum rdma_restrack_type res_type, 1312 res_fill_func_t fill_func) 1313 { 1314 const struct nldev_fill_res_entry *fe = &fill_entries[res_type]; 1315 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1316 struct rdma_restrack_entry *res; 1317 struct rdma_restrack_root *rt; 1318 int err, ret = 0, idx = 0; 1319 struct nlattr *table_attr; 1320 struct nlattr *entry_attr; 1321 struct ib_device *device; 1322 int start = cb->args[0]; 1323 bool has_cap_net_admin; 1324 struct nlmsghdr *nlh; 1325 unsigned long id; 1326 u32 index, port = 0; 1327 bool filled = false; 1328 1329 err = nlmsg_parse_deprecated(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1330 nldev_policy, NULL); 1331 /* 1332 * Right now, we are expecting the device index to get res information, 1333 * but it is possible to extend this code to return all devices in 1334 * one shot by checking the existence of RDMA_NLDEV_ATTR_DEV_INDEX. 1335 * if it doesn't exist, we will iterate over all devices. 1336 * 1337 * But it is not needed for now. 1338 */ 1339 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1340 return -EINVAL; 1341 1342 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1343 device = ib_device_get_by_index(sock_net(skb->sk), index); 1344 if (!device) 1345 return -EINVAL; 1346 1347 /* 1348 * If no PORT_INDEX is supplied, we will return all QPs from that device 1349 */ 1350 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1351 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1352 if (!rdma_is_port_valid(device, port)) { 1353 ret = -EINVAL; 1354 goto err_index; 1355 } 1356 } 1357 1358 nlh = nlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 1359 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, fe->nldev_cmd), 1360 0, NLM_F_MULTI); 1361 1362 if (fill_nldev_handle(skb, device)) { 1363 ret = -EMSGSIZE; 1364 goto err; 1365 } 1366 1367 table_attr = nla_nest_start_noflag(skb, fe->nldev_attr); 1368 if (!table_attr) { 1369 ret = -EMSGSIZE; 1370 goto err; 1371 } 1372 1373 has_cap_net_admin = netlink_capable(cb->skb, CAP_NET_ADMIN); 1374 1375 rt = &device->res[res_type]; 1376 xa_lock(&rt->xa); 1377 /* 1378 * FIXME: if the skip ahead is something common this loop should 1379 * use xas_for_each & xas_pause to optimize, we can have a lot of 1380 * objects. 1381 */ 1382 xa_for_each(&rt->xa, id, res) { 1383 if (idx < start || !rdma_restrack_get(res)) 1384 goto next; 1385 1386 xa_unlock(&rt->xa); 1387 1388 filled = true; 1389 1390 entry_attr = nla_nest_start_noflag(skb, fe->entry); 1391 if (!entry_attr) { 1392 ret = -EMSGSIZE; 1393 rdma_restrack_put(res); 1394 goto msg_full; 1395 } 1396 1397 ret = fill_func(skb, has_cap_net_admin, res, port); 1398 1399 rdma_restrack_put(res); 1400 1401 if (ret) { 1402 nla_nest_cancel(skb, entry_attr); 1403 if (ret == -EMSGSIZE) 1404 goto msg_full; 1405 if (ret == -EAGAIN) 1406 goto again; 1407 goto res_err; 1408 } 1409 nla_nest_end(skb, entry_attr); 1410 again: xa_lock(&rt->xa); 1411 next: idx++; 1412 } 1413 xa_unlock(&rt->xa); 1414 1415 msg_full: 1416 nla_nest_end(skb, table_attr); 1417 nlmsg_end(skb, nlh); 1418 cb->args[0] = idx; 1419 1420 /* 1421 * No more entries to fill, cancel the message and 1422 * return 0 to mark end of dumpit. 1423 */ 1424 if (!filled) 1425 goto err; 1426 1427 ib_device_put(device); 1428 return skb->len; 1429 1430 res_err: 1431 nla_nest_cancel(skb, table_attr); 1432 1433 err: 1434 nlmsg_cancel(skb, nlh); 1435 1436 err_index: 1437 ib_device_put(device); 1438 return ret; 1439 } 1440 1441 #define RES_GET_FUNCS(name, type) \ 1442 static int nldev_res_get_##name##_dumpit(struct sk_buff *skb, \ 1443 struct netlink_callback *cb) \ 1444 { \ 1445 return res_get_common_dumpit(skb, cb, type, \ 1446 fill_res_##name##_entry); \ 1447 } \ 1448 static int nldev_res_get_##name##_doit(struct sk_buff *skb, \ 1449 struct nlmsghdr *nlh, \ 1450 struct netlink_ext_ack *extack) \ 1451 { \ 1452 return res_get_common_doit(skb, nlh, extack, type, \ 1453 fill_res_##name##_entry); \ 1454 } 1455 1456 RES_GET_FUNCS(qp, RDMA_RESTRACK_QP); 1457 RES_GET_FUNCS(cm_id, RDMA_RESTRACK_CM_ID); 1458 RES_GET_FUNCS(cq, RDMA_RESTRACK_CQ); 1459 RES_GET_FUNCS(pd, RDMA_RESTRACK_PD); 1460 RES_GET_FUNCS(mr, RDMA_RESTRACK_MR); 1461 RES_GET_FUNCS(counter, RDMA_RESTRACK_COUNTER); 1462 1463 static LIST_HEAD(link_ops); 1464 static DECLARE_RWSEM(link_ops_rwsem); 1465 1466 static const struct rdma_link_ops *link_ops_get(const char *type) 1467 { 1468 const struct rdma_link_ops *ops; 1469 1470 list_for_each_entry(ops, &link_ops, list) { 1471 if (!strcmp(ops->type, type)) 1472 goto out; 1473 } 1474 ops = NULL; 1475 out: 1476 return ops; 1477 } 1478 1479 void rdma_link_register(struct rdma_link_ops *ops) 1480 { 1481 down_write(&link_ops_rwsem); 1482 if (WARN_ON_ONCE(link_ops_get(ops->type))) 1483 goto out; 1484 list_add(&ops->list, &link_ops); 1485 out: 1486 up_write(&link_ops_rwsem); 1487 } 1488 EXPORT_SYMBOL(rdma_link_register); 1489 1490 void rdma_link_unregister(struct rdma_link_ops *ops) 1491 { 1492 down_write(&link_ops_rwsem); 1493 list_del(&ops->list); 1494 up_write(&link_ops_rwsem); 1495 } 1496 EXPORT_SYMBOL(rdma_link_unregister); 1497 1498 static int nldev_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, 1499 struct netlink_ext_ack *extack) 1500 { 1501 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1502 char ibdev_name[IB_DEVICE_NAME_MAX]; 1503 const struct rdma_link_ops *ops; 1504 char ndev_name[IFNAMSIZ]; 1505 struct net_device *ndev; 1506 char type[IFNAMSIZ]; 1507 int err; 1508 1509 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1510 nldev_policy, extack); 1511 if (err || !tb[RDMA_NLDEV_ATTR_DEV_NAME] || 1512 !tb[RDMA_NLDEV_ATTR_LINK_TYPE] || !tb[RDMA_NLDEV_ATTR_NDEV_NAME]) 1513 return -EINVAL; 1514 1515 nla_strlcpy(ibdev_name, tb[RDMA_NLDEV_ATTR_DEV_NAME], 1516 sizeof(ibdev_name)); 1517 if (strchr(ibdev_name, '%')) 1518 return -EINVAL; 1519 1520 nla_strlcpy(type, tb[RDMA_NLDEV_ATTR_LINK_TYPE], sizeof(type)); 1521 nla_strlcpy(ndev_name, tb[RDMA_NLDEV_ATTR_NDEV_NAME], 1522 sizeof(ndev_name)); 1523 1524 ndev = dev_get_by_name(sock_net(skb->sk), ndev_name); 1525 if (!ndev) 1526 return -ENODEV; 1527 1528 down_read(&link_ops_rwsem); 1529 ops = link_ops_get(type); 1530 #ifdef CONFIG_MODULES 1531 if (!ops) { 1532 up_read(&link_ops_rwsem); 1533 request_module("rdma-link-%s", type); 1534 down_read(&link_ops_rwsem); 1535 ops = link_ops_get(type); 1536 } 1537 #endif 1538 err = ops ? ops->newlink(ibdev_name, ndev) : -EINVAL; 1539 up_read(&link_ops_rwsem); 1540 dev_put(ndev); 1541 1542 return err; 1543 } 1544 1545 static int nldev_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, 1546 struct netlink_ext_ack *extack) 1547 { 1548 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1549 struct ib_device *device; 1550 u32 index; 1551 int err; 1552 1553 err = nlmsg_parse_deprecated(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1554 nldev_policy, extack); 1555 if (err || !tb[RDMA_NLDEV_ATTR_DEV_INDEX]) 1556 return -EINVAL; 1557 1558 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1559 device = ib_device_get_by_index(sock_net(skb->sk), index); 1560 if (!device) 1561 return -EINVAL; 1562 1563 if (!(device->attrs.device_cap_flags & IB_DEVICE_ALLOW_USER_UNREG)) { 1564 ib_device_put(device); 1565 return -EINVAL; 1566 } 1567 1568 ib_unregister_device_and_put(device); 1569 return 0; 1570 } 1571 1572 static int nldev_get_chardev(struct sk_buff *skb, struct nlmsghdr *nlh, 1573 struct netlink_ext_ack *extack) 1574 { 1575 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1576 char client_name[RDMA_NLDEV_ATTR_CHARDEV_TYPE_SIZE]; 1577 struct ib_client_nl_info data = {}; 1578 struct ib_device *ibdev = NULL; 1579 struct sk_buff *msg; 1580 u32 index; 1581 int err; 1582 1583 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, nldev_policy, 1584 extack); 1585 if (err || !tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE]) 1586 return -EINVAL; 1587 1588 nla_strlcpy(client_name, tb[RDMA_NLDEV_ATTR_CHARDEV_TYPE], 1589 sizeof(client_name)); 1590 1591 if (tb[RDMA_NLDEV_ATTR_DEV_INDEX]) { 1592 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1593 ibdev = ib_device_get_by_index(sock_net(skb->sk), index); 1594 if (!ibdev) 1595 return -EINVAL; 1596 1597 if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1598 data.port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1599 if (!rdma_is_port_valid(ibdev, data.port)) { 1600 err = -EINVAL; 1601 goto out_put; 1602 } 1603 } else { 1604 data.port = -1; 1605 } 1606 } else if (tb[RDMA_NLDEV_ATTR_PORT_INDEX]) { 1607 return -EINVAL; 1608 } 1609 1610 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1611 if (!msg) { 1612 err = -ENOMEM; 1613 goto out_put; 1614 } 1615 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1616 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1617 RDMA_NLDEV_CMD_GET_CHARDEV), 1618 0, 0); 1619 1620 data.nl_msg = msg; 1621 err = ib_get_client_nl_info(ibdev, client_name, &data); 1622 if (err) 1623 goto out_nlmsg; 1624 1625 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV, 1626 huge_encode_dev(data.cdev->devt), 1627 RDMA_NLDEV_ATTR_PAD); 1628 if (err) 1629 goto out_data; 1630 err = nla_put_u64_64bit(msg, RDMA_NLDEV_ATTR_CHARDEV_ABI, data.abi, 1631 RDMA_NLDEV_ATTR_PAD); 1632 if (err) 1633 goto out_data; 1634 if (nla_put_string(msg, RDMA_NLDEV_ATTR_CHARDEV_NAME, 1635 dev_name(data.cdev))) { 1636 err = -EMSGSIZE; 1637 goto out_data; 1638 } 1639 1640 nlmsg_end(msg, nlh); 1641 put_device(data.cdev); 1642 if (ibdev) 1643 ib_device_put(ibdev); 1644 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1645 1646 out_data: 1647 put_device(data.cdev); 1648 out_nlmsg: 1649 nlmsg_free(msg); 1650 out_put: 1651 if (ibdev) 1652 ib_device_put(ibdev); 1653 return err; 1654 } 1655 1656 static int nldev_sys_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1657 struct netlink_ext_ack *extack) 1658 { 1659 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1660 struct sk_buff *msg; 1661 int err; 1662 1663 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1664 nldev_policy, extack); 1665 if (err) 1666 return err; 1667 1668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1669 if (!msg) 1670 return -ENOMEM; 1671 1672 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1673 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1674 RDMA_NLDEV_CMD_SYS_GET), 1675 0, 0); 1676 1677 err = nla_put_u8(msg, RDMA_NLDEV_SYS_ATTR_NETNS_MODE, 1678 (u8)ib_devices_shared_netns); 1679 if (err) { 1680 nlmsg_free(msg); 1681 return err; 1682 } 1683 nlmsg_end(msg, nlh); 1684 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1685 } 1686 1687 static int nldev_set_sys_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1688 struct netlink_ext_ack *extack) 1689 { 1690 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1691 u8 enable; 1692 int err; 1693 1694 err = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1695 nldev_policy, extack); 1696 if (err || !tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]) 1697 return -EINVAL; 1698 1699 enable = nla_get_u8(tb[RDMA_NLDEV_SYS_ATTR_NETNS_MODE]); 1700 /* Only 0 and 1 are supported */ 1701 if (enable > 1) 1702 return -EINVAL; 1703 1704 err = rdma_compatdev_set(enable); 1705 return err; 1706 } 1707 1708 static int nldev_stat_set_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1709 struct netlink_ext_ack *extack) 1710 { 1711 u32 index, port, mode, mask = 0, qpn, cntn = 0; 1712 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1713 struct ib_device *device; 1714 struct sk_buff *msg; 1715 int ret; 1716 1717 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1718 nldev_policy, extack); 1719 /* Currently only counter for QP is supported */ 1720 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 1721 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || 1722 !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || !tb[RDMA_NLDEV_ATTR_STAT_MODE]) 1723 return -EINVAL; 1724 1725 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 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 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1734 if (!rdma_is_port_valid(device, port)) { 1735 ret = -EINVAL; 1736 goto err; 1737 } 1738 1739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1740 if (!msg) { 1741 ret = -ENOMEM; 1742 goto err; 1743 } 1744 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1745 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1746 RDMA_NLDEV_CMD_STAT_SET), 1747 0, 0); 1748 1749 mode = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_MODE]); 1750 if (mode == RDMA_COUNTER_MODE_AUTO) { 1751 if (tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]) 1752 mask = nla_get_u32( 1753 tb[RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK]); 1754 1755 ret = rdma_counter_set_auto_mode(device, port, 1756 mask ? true : false, mask); 1757 if (ret) 1758 goto err_msg; 1759 } else { 1760 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 1761 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) { 1762 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 1763 ret = rdma_counter_bind_qpn(device, port, qpn, cntn); 1764 } else { 1765 ret = rdma_counter_bind_qpn_alloc(device, port, 1766 qpn, &cntn); 1767 } 1768 if (ret) 1769 goto err_msg; 1770 1771 if (fill_nldev_handle(msg, device) || 1772 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 1773 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 1774 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 1775 ret = -EMSGSIZE; 1776 goto err_fill; 1777 } 1778 } 1779 1780 nlmsg_end(msg, nlh); 1781 ib_device_put(device); 1782 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1783 1784 err_fill: 1785 rdma_counter_unbind_qpn(device, port, qpn, cntn); 1786 err_msg: 1787 nlmsg_free(msg); 1788 err: 1789 ib_device_put(device); 1790 return ret; 1791 } 1792 1793 static int nldev_stat_del_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 1794 struct netlink_ext_ack *extack) 1795 { 1796 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 1797 struct ib_device *device; 1798 struct sk_buff *msg; 1799 u32 index, port, qpn, cntn; 1800 int ret; 1801 1802 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 1803 nldev_policy, extack); 1804 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES] || 1805 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX] || 1806 !tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID] || 1807 !tb[RDMA_NLDEV_ATTR_RES_LQPN]) 1808 return -EINVAL; 1809 1810 if (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES]) != RDMA_NLDEV_ATTR_RES_QP) 1811 return -EINVAL; 1812 1813 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1814 device = ib_device_get_by_index(sock_net(skb->sk), index); 1815 if (!device) 1816 return -EINVAL; 1817 1818 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1819 if (!rdma_is_port_valid(device, port)) { 1820 ret = -EINVAL; 1821 goto err; 1822 } 1823 1824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1825 if (!msg) { 1826 ret = -ENOMEM; 1827 goto err; 1828 } 1829 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1830 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1831 RDMA_NLDEV_CMD_STAT_SET), 1832 0, 0); 1833 1834 cntn = nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]); 1835 qpn = nla_get_u32(tb[RDMA_NLDEV_ATTR_RES_LQPN]); 1836 if (fill_nldev_handle(msg, device) || 1837 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 1838 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_COUNTER_ID, cntn) || 1839 nla_put_u32(msg, RDMA_NLDEV_ATTR_RES_LQPN, qpn)) { 1840 ret = -EMSGSIZE; 1841 goto err_fill; 1842 } 1843 1844 ret = rdma_counter_unbind_qpn(device, port, qpn, cntn); 1845 if (ret) 1846 goto err_fill; 1847 1848 nlmsg_end(msg, nlh); 1849 ib_device_put(device); 1850 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1851 1852 err_fill: 1853 nlmsg_free(msg); 1854 err: 1855 ib_device_put(device); 1856 return ret; 1857 } 1858 1859 static int stat_get_doit_default_counter(struct sk_buff *skb, 1860 struct nlmsghdr *nlh, 1861 struct netlink_ext_ack *extack, 1862 struct nlattr *tb[]) 1863 { 1864 struct rdma_hw_stats *stats; 1865 struct nlattr *table_attr; 1866 struct ib_device *device; 1867 int ret, num_cnts, i; 1868 struct sk_buff *msg; 1869 u32 index, port; 1870 u64 v; 1871 1872 if (!tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1873 return -EINVAL; 1874 1875 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1876 device = ib_device_get_by_index(sock_net(skb->sk), index); 1877 if (!device) 1878 return -EINVAL; 1879 1880 if (!device->ops.alloc_hw_stats || !device->ops.get_hw_stats) { 1881 ret = -EINVAL; 1882 goto err; 1883 } 1884 1885 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1886 if (!rdma_is_port_valid(device, port)) { 1887 ret = -EINVAL; 1888 goto err; 1889 } 1890 1891 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1892 if (!msg) { 1893 ret = -ENOMEM; 1894 goto err; 1895 } 1896 1897 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1898 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1899 RDMA_NLDEV_CMD_STAT_GET), 1900 0, 0); 1901 1902 if (fill_nldev_handle(msg, device) || 1903 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port)) { 1904 ret = -EMSGSIZE; 1905 goto err_msg; 1906 } 1907 1908 stats = device->port_data ? device->port_data[port].hw_stats : NULL; 1909 if (stats == NULL) { 1910 ret = -EINVAL; 1911 goto err_msg; 1912 } 1913 mutex_lock(&stats->lock); 1914 1915 num_cnts = device->ops.get_hw_stats(device, stats, port, 0); 1916 if (num_cnts < 0) { 1917 ret = -EINVAL; 1918 goto err_stats; 1919 } 1920 1921 table_attr = nla_nest_start(msg, RDMA_NLDEV_ATTR_STAT_HWCOUNTERS); 1922 if (!table_attr) { 1923 ret = -EMSGSIZE; 1924 goto err_stats; 1925 } 1926 for (i = 0; i < num_cnts; i++) { 1927 v = stats->value[i] + 1928 rdma_counter_get_hwstat_value(device, port, i); 1929 if (rdma_nl_stat_hwcounter_entry(msg, stats->names[i], v)) { 1930 ret = -EMSGSIZE; 1931 goto err_table; 1932 } 1933 } 1934 nla_nest_end(msg, table_attr); 1935 1936 mutex_unlock(&stats->lock); 1937 nlmsg_end(msg, nlh); 1938 ib_device_put(device); 1939 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 1940 1941 err_table: 1942 nla_nest_cancel(msg, table_attr); 1943 err_stats: 1944 mutex_unlock(&stats->lock); 1945 err_msg: 1946 nlmsg_free(msg); 1947 err: 1948 ib_device_put(device); 1949 return ret; 1950 } 1951 1952 static int stat_get_doit_qp(struct sk_buff *skb, struct nlmsghdr *nlh, 1953 struct netlink_ext_ack *extack, struct nlattr *tb[]) 1954 1955 { 1956 static enum rdma_nl_counter_mode mode; 1957 static enum rdma_nl_counter_mask mask; 1958 struct ib_device *device; 1959 struct sk_buff *msg; 1960 u32 index, port; 1961 int ret; 1962 1963 if (tb[RDMA_NLDEV_ATTR_STAT_COUNTER_ID]) 1964 return nldev_res_get_counter_doit(skb, nlh, extack); 1965 1966 if (!tb[RDMA_NLDEV_ATTR_STAT_MODE] || 1967 !tb[RDMA_NLDEV_ATTR_DEV_INDEX] || !tb[RDMA_NLDEV_ATTR_PORT_INDEX]) 1968 return -EINVAL; 1969 1970 index = nla_get_u32(tb[RDMA_NLDEV_ATTR_DEV_INDEX]); 1971 device = ib_device_get_by_index(sock_net(skb->sk), index); 1972 if (!device) 1973 return -EINVAL; 1974 1975 port = nla_get_u32(tb[RDMA_NLDEV_ATTR_PORT_INDEX]); 1976 if (!rdma_is_port_valid(device, port)) { 1977 ret = -EINVAL; 1978 goto err; 1979 } 1980 1981 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 1982 if (!msg) { 1983 ret = -ENOMEM; 1984 goto err; 1985 } 1986 1987 nlh = nlmsg_put(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 1988 RDMA_NL_GET_TYPE(RDMA_NL_NLDEV, 1989 RDMA_NLDEV_CMD_STAT_GET), 1990 0, 0); 1991 1992 ret = rdma_counter_get_mode(device, port, &mode, &mask); 1993 if (ret) 1994 goto err_msg; 1995 1996 if (fill_nldev_handle(msg, device) || 1997 nla_put_u32(msg, RDMA_NLDEV_ATTR_PORT_INDEX, port) || 1998 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_MODE, mode)) { 1999 ret = -EMSGSIZE; 2000 goto err_msg; 2001 } 2002 2003 if ((mode == RDMA_COUNTER_MODE_AUTO) && 2004 nla_put_u32(msg, RDMA_NLDEV_ATTR_STAT_AUTO_MODE_MASK, mask)) { 2005 ret = -EMSGSIZE; 2006 goto err_msg; 2007 } 2008 2009 nlmsg_end(msg, nlh); 2010 ib_device_put(device); 2011 return rdma_nl_unicast(sock_net(skb->sk), msg, NETLINK_CB(skb).portid); 2012 2013 err_msg: 2014 nlmsg_free(msg); 2015 err: 2016 ib_device_put(device); 2017 return ret; 2018 } 2019 2020 static int nldev_stat_get_doit(struct sk_buff *skb, struct nlmsghdr *nlh, 2021 struct netlink_ext_ack *extack) 2022 { 2023 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2024 int ret; 2025 2026 ret = nlmsg_parse(nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2027 nldev_policy, extack); 2028 if (ret) 2029 return -EINVAL; 2030 2031 if (!tb[RDMA_NLDEV_ATTR_STAT_RES]) 2032 return stat_get_doit_default_counter(skb, nlh, extack, tb); 2033 2034 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2035 case RDMA_NLDEV_ATTR_RES_QP: 2036 ret = stat_get_doit_qp(skb, nlh, extack, tb); 2037 break; 2038 case RDMA_NLDEV_ATTR_RES_MR: 2039 ret = res_get_common_doit(skb, nlh, extack, RDMA_RESTRACK_MR, 2040 fill_stat_mr_entry); 2041 break; 2042 default: 2043 ret = -EINVAL; 2044 break; 2045 } 2046 2047 return ret; 2048 } 2049 2050 static int nldev_stat_get_dumpit(struct sk_buff *skb, 2051 struct netlink_callback *cb) 2052 { 2053 struct nlattr *tb[RDMA_NLDEV_ATTR_MAX]; 2054 int ret; 2055 2056 ret = nlmsg_parse(cb->nlh, 0, tb, RDMA_NLDEV_ATTR_MAX - 1, 2057 nldev_policy, NULL); 2058 if (ret || !tb[RDMA_NLDEV_ATTR_STAT_RES]) 2059 return -EINVAL; 2060 2061 switch (nla_get_u32(tb[RDMA_NLDEV_ATTR_STAT_RES])) { 2062 case RDMA_NLDEV_ATTR_RES_QP: 2063 ret = nldev_res_get_counter_dumpit(skb, cb); 2064 break; 2065 case RDMA_NLDEV_ATTR_RES_MR: 2066 ret = res_get_common_dumpit(skb, cb, RDMA_RESTRACK_MR, 2067 fill_stat_mr_entry); 2068 break; 2069 default: 2070 ret = -EINVAL; 2071 break; 2072 } 2073 2074 return ret; 2075 } 2076 2077 static const struct rdma_nl_cbs nldev_cb_table[RDMA_NLDEV_NUM_OPS] = { 2078 [RDMA_NLDEV_CMD_GET] = { 2079 .doit = nldev_get_doit, 2080 .dump = nldev_get_dumpit, 2081 }, 2082 [RDMA_NLDEV_CMD_GET_CHARDEV] = { 2083 .doit = nldev_get_chardev, 2084 }, 2085 [RDMA_NLDEV_CMD_SET] = { 2086 .doit = nldev_set_doit, 2087 .flags = RDMA_NL_ADMIN_PERM, 2088 }, 2089 [RDMA_NLDEV_CMD_NEWLINK] = { 2090 .doit = nldev_newlink, 2091 .flags = RDMA_NL_ADMIN_PERM, 2092 }, 2093 [RDMA_NLDEV_CMD_DELLINK] = { 2094 .doit = nldev_dellink, 2095 .flags = RDMA_NL_ADMIN_PERM, 2096 }, 2097 [RDMA_NLDEV_CMD_PORT_GET] = { 2098 .doit = nldev_port_get_doit, 2099 .dump = nldev_port_get_dumpit, 2100 }, 2101 [RDMA_NLDEV_CMD_RES_GET] = { 2102 .doit = nldev_res_get_doit, 2103 .dump = nldev_res_get_dumpit, 2104 }, 2105 [RDMA_NLDEV_CMD_RES_QP_GET] = { 2106 .doit = nldev_res_get_qp_doit, 2107 .dump = nldev_res_get_qp_dumpit, 2108 }, 2109 [RDMA_NLDEV_CMD_RES_CM_ID_GET] = { 2110 .doit = nldev_res_get_cm_id_doit, 2111 .dump = nldev_res_get_cm_id_dumpit, 2112 }, 2113 [RDMA_NLDEV_CMD_RES_CQ_GET] = { 2114 .doit = nldev_res_get_cq_doit, 2115 .dump = nldev_res_get_cq_dumpit, 2116 }, 2117 [RDMA_NLDEV_CMD_RES_MR_GET] = { 2118 .doit = nldev_res_get_mr_doit, 2119 .dump = nldev_res_get_mr_dumpit, 2120 }, 2121 [RDMA_NLDEV_CMD_RES_PD_GET] = { 2122 .doit = nldev_res_get_pd_doit, 2123 .dump = nldev_res_get_pd_dumpit, 2124 }, 2125 [RDMA_NLDEV_CMD_SYS_GET] = { 2126 .doit = nldev_sys_get_doit, 2127 }, 2128 [RDMA_NLDEV_CMD_SYS_SET] = { 2129 .doit = nldev_set_sys_set_doit, 2130 }, 2131 [RDMA_NLDEV_CMD_STAT_SET] = { 2132 .doit = nldev_stat_set_doit, 2133 .flags = RDMA_NL_ADMIN_PERM, 2134 }, 2135 [RDMA_NLDEV_CMD_STAT_GET] = { 2136 .doit = nldev_stat_get_doit, 2137 .dump = nldev_stat_get_dumpit, 2138 }, 2139 [RDMA_NLDEV_CMD_STAT_DEL] = { 2140 .doit = nldev_stat_del_doit, 2141 .flags = RDMA_NL_ADMIN_PERM, 2142 }, 2143 }; 2144 2145 void __init nldev_init(void) 2146 { 2147 rdma_nl_register(RDMA_NL_NLDEV, nldev_cb_table); 2148 } 2149 2150 void __exit nldev_exit(void) 2151 { 2152 rdma_nl_unregister(RDMA_NL_NLDEV); 2153 } 2154 2155 MODULE_ALIAS_RDMA_NETLINK(RDMA_NL_NLDEV, 5); 2156