1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <net/sock.h> 4 #include <linux/ethtool_netlink.h> 5 #include <linux/pm_runtime.h> 6 #include "netlink.h" 7 8 static struct genl_family ethtool_genl_family; 9 10 static bool ethnl_ok __read_mostly; 11 static u32 ethnl_bcast_seq; 12 13 #define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \ 14 ETHTOOL_FLAG_OMIT_REPLY) 15 #define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS) 16 17 const struct nla_policy ethnl_header_policy[] = { 18 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 19 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 20 .len = ALTIFNAMSIZ - 1 }, 21 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 22 ETHTOOL_FLAGS_BASIC), 23 }; 24 25 const struct nla_policy ethnl_header_policy_stats[] = { 26 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 27 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 28 .len = ALTIFNAMSIZ - 1 }, 29 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 30 ETHTOOL_FLAGS_STATS), 31 }; 32 33 int ethnl_ops_begin(struct net_device *dev) 34 { 35 int ret; 36 37 if (!dev) 38 return -ENODEV; 39 40 if (dev->dev.parent) 41 pm_runtime_get_sync(dev->dev.parent); 42 43 if (!netif_device_present(dev) || 44 dev->reg_state == NETREG_UNREGISTERING) { 45 ret = -ENODEV; 46 goto err; 47 } 48 49 if (dev->ethtool_ops->begin) { 50 ret = dev->ethtool_ops->begin(dev); 51 if (ret) 52 goto err; 53 } 54 55 return 0; 56 err: 57 if (dev->dev.parent) 58 pm_runtime_put(dev->dev.parent); 59 60 return ret; 61 } 62 63 void ethnl_ops_complete(struct net_device *dev) 64 { 65 if (dev->ethtool_ops->complete) 66 dev->ethtool_ops->complete(dev); 67 68 if (dev->dev.parent) 69 pm_runtime_put(dev->dev.parent); 70 } 71 72 /** 73 * ethnl_parse_header_dev_get() - parse request header 74 * @req_info: structure to put results into 75 * @header: nest attribute with request header 76 * @net: request netns 77 * @extack: netlink extack for error reporting 78 * @require_dev: fail if no device identified in header 79 * 80 * Parse request header in nested attribute @nest and puts results into 81 * the structure pointed to by @req_info. Extack from @info is used for error 82 * reporting. If req_info->dev is not null on return, reference to it has 83 * been taken. If error is returned, *req_info is null initialized and no 84 * reference is held. 85 * 86 * Return: 0 on success or negative error code 87 */ 88 int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, 89 const struct nlattr *header, struct net *net, 90 struct netlink_ext_ack *extack, bool require_dev) 91 { 92 struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)]; 93 const struct nlattr *devname_attr; 94 struct net_device *dev = NULL; 95 u32 flags = 0; 96 int ret; 97 98 if (!header) { 99 if (!require_dev) 100 return 0; 101 NL_SET_ERR_MSG(extack, "request header missing"); 102 return -EINVAL; 103 } 104 /* No validation here, command policy should have a nested policy set 105 * for the header, therefore validation should have already been done. 106 */ 107 ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header, 108 NULL, extack); 109 if (ret < 0) 110 return ret; 111 if (tb[ETHTOOL_A_HEADER_FLAGS]) 112 flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); 113 114 devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; 115 if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { 116 u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); 117 118 dev = netdev_get_by_index(net, ifindex, &req_info->dev_tracker, 119 GFP_KERNEL); 120 if (!dev) { 121 NL_SET_ERR_MSG_ATTR(extack, 122 tb[ETHTOOL_A_HEADER_DEV_INDEX], 123 "no device matches ifindex"); 124 return -ENODEV; 125 } 126 /* if both ifindex and ifname are passed, they must match */ 127 if (devname_attr && 128 strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { 129 netdev_put(dev, &req_info->dev_tracker); 130 NL_SET_ERR_MSG_ATTR(extack, header, 131 "ifindex and name do not match"); 132 return -ENODEV; 133 } 134 } else if (devname_attr) { 135 dev = netdev_get_by_name(net, nla_data(devname_attr), 136 &req_info->dev_tracker, GFP_KERNEL); 137 if (!dev) { 138 NL_SET_ERR_MSG_ATTR(extack, devname_attr, 139 "no device matches name"); 140 return -ENODEV; 141 } 142 } else if (require_dev) { 143 NL_SET_ERR_MSG_ATTR(extack, header, 144 "neither ifindex nor name specified"); 145 return -EINVAL; 146 } 147 148 req_info->dev = dev; 149 req_info->flags = flags; 150 return 0; 151 } 152 153 /** 154 * ethnl_fill_reply_header() - Put common header into a reply message 155 * @skb: skb with the message 156 * @dev: network device to describe in header 157 * @attrtype: attribute type to use for the nest 158 * 159 * Create a nested attribute with attributes describing given network device. 160 * 161 * Return: 0 on success, error value (-EMSGSIZE only) on error 162 */ 163 int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, 164 u16 attrtype) 165 { 166 struct nlattr *nest; 167 168 if (!dev) 169 return 0; 170 nest = nla_nest_start(skb, attrtype); 171 if (!nest) 172 return -EMSGSIZE; 173 174 if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || 175 nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) 176 goto nla_put_failure; 177 /* If more attributes are put into reply header, ethnl_header_size() 178 * must be updated to account for them. 179 */ 180 181 nla_nest_end(skb, nest); 182 return 0; 183 184 nla_put_failure: 185 nla_nest_cancel(skb, nest); 186 return -EMSGSIZE; 187 } 188 189 /** 190 * ethnl_reply_init() - Create skb for a reply and fill device identification 191 * @payload: payload length (without netlink and genetlink header) 192 * @dev: device the reply is about (may be null) 193 * @cmd: ETHTOOL_MSG_* message type for reply 194 * @hdr_attrtype: attribute type for common header 195 * @info: genetlink info of the received packet we respond to 196 * @ehdrp: place to store payload pointer returned by genlmsg_new() 197 * 198 * Return: pointer to allocated skb on success, NULL on error 199 */ 200 struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, 201 u16 hdr_attrtype, struct genl_info *info, 202 void **ehdrp) 203 { 204 struct sk_buff *skb; 205 206 skb = genlmsg_new(payload, GFP_KERNEL); 207 if (!skb) 208 goto err; 209 *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); 210 if (!*ehdrp) 211 goto err_free; 212 213 if (dev) { 214 int ret; 215 216 ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); 217 if (ret < 0) 218 goto err_free; 219 } 220 return skb; 221 222 err_free: 223 nlmsg_free(skb); 224 err: 225 if (info) 226 GENL_SET_ERR_MSG(info, "failed to setup reply message"); 227 return NULL; 228 } 229 230 void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd) 231 { 232 return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 233 ðtool_genl_family, 0, cmd); 234 } 235 236 void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) 237 { 238 return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0, 239 cmd); 240 } 241 242 int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) 243 { 244 return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, 245 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); 246 } 247 248 /* GET request helpers */ 249 250 /** 251 * struct ethnl_dump_ctx - context structure for generic dumpit() callback 252 * @ops: request ops of currently processed message type 253 * @req_info: parsed request header of processed request 254 * @reply_data: data needed to compose the reply 255 * @pos_ifindex: saved iteration position - ifindex 256 * 257 * These parameters are kept in struct netlink_callback as context preserved 258 * between iterations. They are initialized by ethnl_default_start() and used 259 * in ethnl_default_dumpit() and ethnl_default_done(). 260 */ 261 struct ethnl_dump_ctx { 262 const struct ethnl_request_ops *ops; 263 struct ethnl_req_info *req_info; 264 struct ethnl_reply_data *reply_data; 265 unsigned long pos_ifindex; 266 }; 267 268 static const struct ethnl_request_ops * 269 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { 270 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, 271 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, 272 [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops, 273 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, 274 [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops, 275 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, 276 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, 277 [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops, 278 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, 279 [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops, 280 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, 281 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, 282 [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops, 283 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, 284 [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops, 285 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, 286 [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops, 287 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, 288 [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops, 289 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, 290 [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops, 291 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, 292 [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops, 293 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops, 294 [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops, 295 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, 296 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops, 297 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops, 298 [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops, 299 [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops, 300 [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops, 301 [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops, 302 [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops, 303 [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops, 304 [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops, 305 [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops, 306 [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops, 307 [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops, 308 [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops, 309 }; 310 311 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) 312 { 313 return (struct ethnl_dump_ctx *)cb->ctx; 314 } 315 316 /** 317 * ethnl_default_parse() - Parse request message 318 * @req_info: pointer to structure to put data into 319 * @info: genl_info from the request 320 * @request_ops: struct request_ops for request type 321 * @require_dev: fail if no device identified in header 322 * 323 * Parse universal request header and call request specific ->parse_request() 324 * callback (if defined) to parse the rest of the message. 325 * 326 * Return: 0 on success or negative error code 327 */ 328 static int ethnl_default_parse(struct ethnl_req_info *req_info, 329 const struct genl_info *info, 330 const struct ethnl_request_ops *request_ops, 331 bool require_dev) 332 { 333 struct nlattr **tb = info->attrs; 334 int ret; 335 336 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], 337 genl_info_net(info), info->extack, 338 require_dev); 339 if (ret < 0) 340 return ret; 341 342 if (request_ops->parse_request) { 343 ret = request_ops->parse_request(req_info, tb, info->extack); 344 if (ret < 0) 345 return ret; 346 } 347 348 return 0; 349 } 350 351 /** 352 * ethnl_init_reply_data() - Initialize reply data for GET request 353 * @reply_data: pointer to embedded struct ethnl_reply_data 354 * @ops: instance of struct ethnl_request_ops describing the layout 355 * @dev: network device to initialize the reply for 356 * 357 * Fills the reply data part with zeros and sets the dev member. Must be called 358 * before calling the ->fill_reply() callback (for each iteration when handling 359 * dump requests). 360 */ 361 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, 362 const struct ethnl_request_ops *ops, 363 struct net_device *dev) 364 { 365 memset(reply_data, 0, ops->reply_data_size); 366 reply_data->dev = dev; 367 } 368 369 /* default ->doit() handler for GET type requests */ 370 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) 371 { 372 struct ethnl_reply_data *reply_data = NULL; 373 struct ethnl_req_info *req_info = NULL; 374 const u8 cmd = info->genlhdr->cmd; 375 const struct ethnl_request_ops *ops; 376 int hdr_len, reply_len; 377 struct sk_buff *rskb; 378 void *reply_payload; 379 int ret; 380 381 ops = ethnl_default_requests[cmd]; 382 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 383 return -EOPNOTSUPP; 384 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 385 return -EINVAL; 386 387 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 388 if (!req_info) 389 return -ENOMEM; 390 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 391 if (!reply_data) { 392 kfree(req_info); 393 return -ENOMEM; 394 } 395 396 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); 397 if (ret < 0) 398 goto err_dev; 399 ethnl_init_reply_data(reply_data, ops, req_info->dev); 400 401 rtnl_lock(); 402 ret = ops->prepare_data(req_info, reply_data, info); 403 rtnl_unlock(); 404 if (ret < 0) 405 goto err_cleanup; 406 ret = ops->reply_size(req_info, reply_data); 407 if (ret < 0) 408 goto err_cleanup; 409 reply_len = ret; 410 ret = -ENOMEM; 411 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), 412 req_info->dev, ops->reply_cmd, 413 ops->hdr_attr, info, &reply_payload); 414 if (!rskb) 415 goto err_cleanup; 416 hdr_len = rskb->len; 417 ret = ops->fill_reply(rskb, req_info, reply_data); 418 if (ret < 0) 419 goto err_msg; 420 WARN_ONCE(rskb->len - hdr_len > reply_len, 421 "ethnl cmd %d: calculated reply length %d, but consumed %d\n", 422 cmd, reply_len, rskb->len - hdr_len); 423 if (ops->cleanup_data) 424 ops->cleanup_data(reply_data); 425 426 genlmsg_end(rskb, reply_payload); 427 netdev_put(req_info->dev, &req_info->dev_tracker); 428 kfree(reply_data); 429 kfree(req_info); 430 return genlmsg_reply(rskb, info); 431 432 err_msg: 433 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); 434 nlmsg_free(rskb); 435 err_cleanup: 436 if (ops->cleanup_data) 437 ops->cleanup_data(reply_data); 438 err_dev: 439 netdev_put(req_info->dev, &req_info->dev_tracker); 440 kfree(reply_data); 441 kfree(req_info); 442 return ret; 443 } 444 445 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, 446 const struct ethnl_dump_ctx *ctx, 447 const struct genl_info *info) 448 { 449 void *ehdr; 450 int ret; 451 452 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 453 ðtool_genl_family, NLM_F_MULTI, 454 ctx->ops->reply_cmd); 455 if (!ehdr) 456 return -EMSGSIZE; 457 458 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); 459 rtnl_lock(); 460 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); 461 rtnl_unlock(); 462 if (ret < 0) 463 goto out; 464 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); 465 if (ret < 0) 466 goto out; 467 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); 468 469 out: 470 if (ctx->ops->cleanup_data) 471 ctx->ops->cleanup_data(ctx->reply_data); 472 ctx->reply_data->dev = NULL; 473 if (ret < 0) 474 genlmsg_cancel(skb, ehdr); 475 else 476 genlmsg_end(skb, ehdr); 477 return ret; 478 } 479 480 /* Default ->dumpit() handler for GET requests. Device iteration copied from 481 * rtnl_dump_ifinfo(); we have to be more careful about device hashtable 482 * persistence as we cannot guarantee to hold RTNL lock through the whole 483 * function as rtnetnlink does. 484 */ 485 static int ethnl_default_dumpit(struct sk_buff *skb, 486 struct netlink_callback *cb) 487 { 488 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 489 struct net *net = sock_net(skb->sk); 490 struct net_device *dev; 491 int ret = 0; 492 493 rtnl_lock(); 494 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 495 dev_hold(dev); 496 rtnl_unlock(); 497 498 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 499 500 rtnl_lock(); 501 dev_put(dev); 502 503 if (ret < 0 && ret != -EOPNOTSUPP) { 504 if (likely(skb->len)) 505 ret = skb->len; 506 break; 507 } 508 } 509 rtnl_unlock(); 510 511 return ret; 512 } 513 514 /* generic ->start() handler for GET requests */ 515 static int ethnl_default_start(struct netlink_callback *cb) 516 { 517 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 518 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 519 struct ethnl_reply_data *reply_data; 520 const struct ethnl_request_ops *ops; 521 struct ethnl_req_info *req_info; 522 struct genlmsghdr *ghdr; 523 int ret; 524 525 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 526 527 ghdr = nlmsg_data(cb->nlh); 528 ops = ethnl_default_requests[ghdr->cmd]; 529 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 530 return -EOPNOTSUPP; 531 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 532 if (!req_info) 533 return -ENOMEM; 534 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 535 if (!reply_data) { 536 ret = -ENOMEM; 537 goto free_req_info; 538 } 539 540 ret = ethnl_default_parse(req_info, &info->info, ops, false); 541 if (req_info->dev) { 542 /* We ignore device specification in dump requests but as the 543 * same parser as for non-dump (doit) requests is used, it 544 * would take reference to the device if it finds one 545 */ 546 netdev_put(req_info->dev, &req_info->dev_tracker); 547 req_info->dev = NULL; 548 } 549 if (ret < 0) 550 goto free_reply_data; 551 552 ctx->ops = ops; 553 ctx->req_info = req_info; 554 ctx->reply_data = reply_data; 555 ctx->pos_ifindex = 0; 556 557 return 0; 558 559 free_reply_data: 560 kfree(reply_data); 561 free_req_info: 562 kfree(req_info); 563 564 return ret; 565 } 566 567 /* default ->done() handler for GET requests */ 568 static int ethnl_default_done(struct netlink_callback *cb) 569 { 570 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 571 572 kfree(ctx->reply_data); 573 kfree(ctx->req_info); 574 575 return 0; 576 } 577 578 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 579 { 580 const struct ethnl_request_ops *ops; 581 struct ethnl_req_info req_info = {}; 582 const u8 cmd = info->genlhdr->cmd; 583 int ret; 584 585 ops = ethnl_default_requests[cmd]; 586 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 587 return -EOPNOTSUPP; 588 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 589 return -EINVAL; 590 591 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr], 592 genl_info_net(info), info->extack, 593 true); 594 if (ret < 0) 595 return ret; 596 597 if (ops->set_validate) { 598 ret = ops->set_validate(&req_info, info); 599 /* 0 means nothing to do */ 600 if (ret <= 0) 601 goto out_dev; 602 } 603 604 rtnl_lock(); 605 ret = ethnl_ops_begin(req_info.dev); 606 if (ret < 0) 607 goto out_rtnl; 608 609 ret = ops->set(&req_info, info); 610 if (ret <= 0) 611 goto out_ops; 612 ethtool_notify(req_info.dev, ops->set_ntf_cmd, NULL); 613 614 ret = 0; 615 out_ops: 616 ethnl_ops_complete(req_info.dev); 617 out_rtnl: 618 rtnl_unlock(); 619 out_dev: 620 ethnl_parse_header_dev_put(&req_info); 621 return ret; 622 } 623 624 static const struct ethnl_request_ops * 625 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 626 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 627 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 628 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 629 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 630 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 631 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 632 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 633 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 634 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 635 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 636 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 637 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 638 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 639 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 640 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 641 }; 642 643 /* default notification handler */ 644 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 645 const void *data) 646 { 647 struct ethnl_reply_data *reply_data; 648 const struct ethnl_request_ops *ops; 649 struct ethnl_req_info *req_info; 650 struct genl_info info; 651 struct sk_buff *skb; 652 void *reply_payload; 653 int reply_len; 654 int ret; 655 656 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 657 658 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 659 !ethnl_default_notify_ops[cmd], 660 "unexpected notification type %u\n", cmd)) 661 return; 662 ops = ethnl_default_notify_ops[cmd]; 663 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 664 if (!req_info) 665 return; 666 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 667 if (!reply_data) { 668 kfree(req_info); 669 return; 670 } 671 672 req_info->dev = dev; 673 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 674 675 ethnl_init_reply_data(reply_data, ops, dev); 676 ret = ops->prepare_data(req_info, reply_data, &info); 677 if (ret < 0) 678 goto err_cleanup; 679 ret = ops->reply_size(req_info, reply_data); 680 if (ret < 0) 681 goto err_cleanup; 682 reply_len = ret + ethnl_reply_header_size(); 683 skb = genlmsg_new(reply_len, GFP_KERNEL); 684 if (!skb) 685 goto err_cleanup; 686 reply_payload = ethnl_bcastmsg_put(skb, cmd); 687 if (!reply_payload) 688 goto err_skb; 689 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 690 if (ret < 0) 691 goto err_msg; 692 ret = ops->fill_reply(skb, req_info, reply_data); 693 if (ret < 0) 694 goto err_msg; 695 if (ops->cleanup_data) 696 ops->cleanup_data(reply_data); 697 698 genlmsg_end(skb, reply_payload); 699 kfree(reply_data); 700 kfree(req_info); 701 ethnl_multicast(skb, dev); 702 return; 703 704 err_msg: 705 WARN_ONCE(ret == -EMSGSIZE, 706 "calculated message payload length (%d) not sufficient\n", 707 reply_len); 708 err_skb: 709 nlmsg_free(skb); 710 err_cleanup: 711 if (ops->cleanup_data) 712 ops->cleanup_data(reply_data); 713 kfree(reply_data); 714 kfree(req_info); 715 return; 716 } 717 718 /* notifications */ 719 720 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 721 const void *data); 722 723 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 724 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 725 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 726 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 727 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 728 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 729 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 730 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 731 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 732 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 733 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 734 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 735 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 736 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 737 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 738 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 739 }; 740 741 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) 742 { 743 if (unlikely(!ethnl_ok)) 744 return; 745 ASSERT_RTNL(); 746 747 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 748 ethnl_notify_handlers[cmd])) 749 ethnl_notify_handlers[cmd](dev, cmd, data); 750 else 751 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 752 cmd, netdev_name(dev)); 753 } 754 EXPORT_SYMBOL(ethtool_notify); 755 756 static void ethnl_notify_features(struct netdev_notifier_info *info) 757 { 758 struct net_device *dev = netdev_notifier_info_to_dev(info); 759 760 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); 761 } 762 763 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 764 void *ptr) 765 { 766 switch (event) { 767 case NETDEV_FEAT_CHANGE: 768 ethnl_notify_features(ptr); 769 break; 770 } 771 772 return NOTIFY_DONE; 773 } 774 775 static struct notifier_block ethnl_netdev_notifier = { 776 .notifier_call = ethnl_netdev_event, 777 }; 778 779 /* genetlink setup */ 780 781 static const struct genl_ops ethtool_genl_ops[] = { 782 { 783 .cmd = ETHTOOL_MSG_STRSET_GET, 784 .doit = ethnl_default_doit, 785 .start = ethnl_default_start, 786 .dumpit = ethnl_default_dumpit, 787 .done = ethnl_default_done, 788 .policy = ethnl_strset_get_policy, 789 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 790 }, 791 { 792 .cmd = ETHTOOL_MSG_LINKINFO_GET, 793 .doit = ethnl_default_doit, 794 .start = ethnl_default_start, 795 .dumpit = ethnl_default_dumpit, 796 .done = ethnl_default_done, 797 .policy = ethnl_linkinfo_get_policy, 798 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 799 }, 800 { 801 .cmd = ETHTOOL_MSG_LINKINFO_SET, 802 .flags = GENL_UNS_ADMIN_PERM, 803 .doit = ethnl_default_set_doit, 804 .policy = ethnl_linkinfo_set_policy, 805 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 806 }, 807 { 808 .cmd = ETHTOOL_MSG_LINKMODES_GET, 809 .doit = ethnl_default_doit, 810 .start = ethnl_default_start, 811 .dumpit = ethnl_default_dumpit, 812 .done = ethnl_default_done, 813 .policy = ethnl_linkmodes_get_policy, 814 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 815 }, 816 { 817 .cmd = ETHTOOL_MSG_LINKMODES_SET, 818 .flags = GENL_UNS_ADMIN_PERM, 819 .doit = ethnl_default_set_doit, 820 .policy = ethnl_linkmodes_set_policy, 821 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 822 }, 823 { 824 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 825 .doit = ethnl_default_doit, 826 .start = ethnl_default_start, 827 .dumpit = ethnl_default_dumpit, 828 .done = ethnl_default_done, 829 .policy = ethnl_linkstate_get_policy, 830 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 831 }, 832 { 833 .cmd = ETHTOOL_MSG_DEBUG_GET, 834 .doit = ethnl_default_doit, 835 .start = ethnl_default_start, 836 .dumpit = ethnl_default_dumpit, 837 .done = ethnl_default_done, 838 .policy = ethnl_debug_get_policy, 839 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 840 }, 841 { 842 .cmd = ETHTOOL_MSG_DEBUG_SET, 843 .flags = GENL_UNS_ADMIN_PERM, 844 .doit = ethnl_default_set_doit, 845 .policy = ethnl_debug_set_policy, 846 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 847 }, 848 { 849 .cmd = ETHTOOL_MSG_WOL_GET, 850 .flags = GENL_UNS_ADMIN_PERM, 851 .doit = ethnl_default_doit, 852 .start = ethnl_default_start, 853 .dumpit = ethnl_default_dumpit, 854 .done = ethnl_default_done, 855 .policy = ethnl_wol_get_policy, 856 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 857 }, 858 { 859 .cmd = ETHTOOL_MSG_WOL_SET, 860 .flags = GENL_UNS_ADMIN_PERM, 861 .doit = ethnl_default_set_doit, 862 .policy = ethnl_wol_set_policy, 863 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 864 }, 865 { 866 .cmd = ETHTOOL_MSG_FEATURES_GET, 867 .doit = ethnl_default_doit, 868 .start = ethnl_default_start, 869 .dumpit = ethnl_default_dumpit, 870 .done = ethnl_default_done, 871 .policy = ethnl_features_get_policy, 872 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 873 }, 874 { 875 .cmd = ETHTOOL_MSG_FEATURES_SET, 876 .flags = GENL_UNS_ADMIN_PERM, 877 .doit = ethnl_set_features, 878 .policy = ethnl_features_set_policy, 879 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 880 }, 881 { 882 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 883 .doit = ethnl_default_doit, 884 .start = ethnl_default_start, 885 .dumpit = ethnl_default_dumpit, 886 .done = ethnl_default_done, 887 .policy = ethnl_privflags_get_policy, 888 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 889 }, 890 { 891 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 892 .flags = GENL_UNS_ADMIN_PERM, 893 .doit = ethnl_default_set_doit, 894 .policy = ethnl_privflags_set_policy, 895 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 896 }, 897 { 898 .cmd = ETHTOOL_MSG_RINGS_GET, 899 .doit = ethnl_default_doit, 900 .start = ethnl_default_start, 901 .dumpit = ethnl_default_dumpit, 902 .done = ethnl_default_done, 903 .policy = ethnl_rings_get_policy, 904 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 905 }, 906 { 907 .cmd = ETHTOOL_MSG_RINGS_SET, 908 .flags = GENL_UNS_ADMIN_PERM, 909 .doit = ethnl_default_set_doit, 910 .policy = ethnl_rings_set_policy, 911 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 912 }, 913 { 914 .cmd = ETHTOOL_MSG_CHANNELS_GET, 915 .doit = ethnl_default_doit, 916 .start = ethnl_default_start, 917 .dumpit = ethnl_default_dumpit, 918 .done = ethnl_default_done, 919 .policy = ethnl_channels_get_policy, 920 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 921 }, 922 { 923 .cmd = ETHTOOL_MSG_CHANNELS_SET, 924 .flags = GENL_UNS_ADMIN_PERM, 925 .doit = ethnl_default_set_doit, 926 .policy = ethnl_channels_set_policy, 927 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 928 }, 929 { 930 .cmd = ETHTOOL_MSG_COALESCE_GET, 931 .doit = ethnl_default_doit, 932 .start = ethnl_default_start, 933 .dumpit = ethnl_default_dumpit, 934 .done = ethnl_default_done, 935 .policy = ethnl_coalesce_get_policy, 936 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 937 }, 938 { 939 .cmd = ETHTOOL_MSG_COALESCE_SET, 940 .flags = GENL_UNS_ADMIN_PERM, 941 .doit = ethnl_default_set_doit, 942 .policy = ethnl_coalesce_set_policy, 943 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 944 }, 945 { 946 .cmd = ETHTOOL_MSG_PAUSE_GET, 947 .doit = ethnl_default_doit, 948 .start = ethnl_default_start, 949 .dumpit = ethnl_default_dumpit, 950 .done = ethnl_default_done, 951 .policy = ethnl_pause_get_policy, 952 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 953 }, 954 { 955 .cmd = ETHTOOL_MSG_PAUSE_SET, 956 .flags = GENL_UNS_ADMIN_PERM, 957 .doit = ethnl_default_set_doit, 958 .policy = ethnl_pause_set_policy, 959 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 960 }, 961 { 962 .cmd = ETHTOOL_MSG_EEE_GET, 963 .doit = ethnl_default_doit, 964 .start = ethnl_default_start, 965 .dumpit = ethnl_default_dumpit, 966 .done = ethnl_default_done, 967 .policy = ethnl_eee_get_policy, 968 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 969 }, 970 { 971 .cmd = ETHTOOL_MSG_EEE_SET, 972 .flags = GENL_UNS_ADMIN_PERM, 973 .doit = ethnl_default_set_doit, 974 .policy = ethnl_eee_set_policy, 975 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 976 }, 977 { 978 .cmd = ETHTOOL_MSG_TSINFO_GET, 979 .doit = ethnl_default_doit, 980 .start = ethnl_default_start, 981 .dumpit = ethnl_default_dumpit, 982 .done = ethnl_default_done, 983 .policy = ethnl_tsinfo_get_policy, 984 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 985 }, 986 { 987 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 988 .flags = GENL_UNS_ADMIN_PERM, 989 .doit = ethnl_act_cable_test, 990 .policy = ethnl_cable_test_act_policy, 991 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 992 }, 993 { 994 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 995 .flags = GENL_UNS_ADMIN_PERM, 996 .doit = ethnl_act_cable_test_tdr, 997 .policy = ethnl_cable_test_tdr_act_policy, 998 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 999 }, 1000 { 1001 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1002 .doit = ethnl_tunnel_info_doit, 1003 .start = ethnl_tunnel_info_start, 1004 .dumpit = ethnl_tunnel_info_dumpit, 1005 .policy = ethnl_tunnel_info_get_policy, 1006 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1007 }, 1008 { 1009 .cmd = ETHTOOL_MSG_FEC_GET, 1010 .doit = ethnl_default_doit, 1011 .start = ethnl_default_start, 1012 .dumpit = ethnl_default_dumpit, 1013 .done = ethnl_default_done, 1014 .policy = ethnl_fec_get_policy, 1015 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1016 }, 1017 { 1018 .cmd = ETHTOOL_MSG_FEC_SET, 1019 .flags = GENL_UNS_ADMIN_PERM, 1020 .doit = ethnl_default_set_doit, 1021 .policy = ethnl_fec_set_policy, 1022 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1023 }, 1024 { 1025 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1026 .flags = GENL_UNS_ADMIN_PERM, 1027 .doit = ethnl_default_doit, 1028 .start = ethnl_default_start, 1029 .dumpit = ethnl_default_dumpit, 1030 .done = ethnl_default_done, 1031 .policy = ethnl_module_eeprom_get_policy, 1032 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1033 }, 1034 { 1035 .cmd = ETHTOOL_MSG_STATS_GET, 1036 .doit = ethnl_default_doit, 1037 .start = ethnl_default_start, 1038 .dumpit = ethnl_default_dumpit, 1039 .done = ethnl_default_done, 1040 .policy = ethnl_stats_get_policy, 1041 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1042 }, 1043 { 1044 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1045 .doit = ethnl_default_doit, 1046 .start = ethnl_default_start, 1047 .dumpit = ethnl_default_dumpit, 1048 .done = ethnl_default_done, 1049 .policy = ethnl_phc_vclocks_get_policy, 1050 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1051 }, 1052 { 1053 .cmd = ETHTOOL_MSG_MODULE_GET, 1054 .doit = ethnl_default_doit, 1055 .start = ethnl_default_start, 1056 .dumpit = ethnl_default_dumpit, 1057 .done = ethnl_default_done, 1058 .policy = ethnl_module_get_policy, 1059 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1060 }, 1061 { 1062 .cmd = ETHTOOL_MSG_MODULE_SET, 1063 .flags = GENL_UNS_ADMIN_PERM, 1064 .doit = ethnl_default_set_doit, 1065 .policy = ethnl_module_set_policy, 1066 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1067 }, 1068 { 1069 .cmd = ETHTOOL_MSG_PSE_GET, 1070 .doit = ethnl_default_doit, 1071 .start = ethnl_default_start, 1072 .dumpit = ethnl_default_dumpit, 1073 .done = ethnl_default_done, 1074 .policy = ethnl_pse_get_policy, 1075 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1076 }, 1077 { 1078 .cmd = ETHTOOL_MSG_PSE_SET, 1079 .flags = GENL_UNS_ADMIN_PERM, 1080 .doit = ethnl_default_set_doit, 1081 .policy = ethnl_pse_set_policy, 1082 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1083 }, 1084 { 1085 .cmd = ETHTOOL_MSG_RSS_GET, 1086 .doit = ethnl_default_doit, 1087 .policy = ethnl_rss_get_policy, 1088 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1089 }, 1090 { 1091 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1092 .doit = ethnl_default_doit, 1093 .start = ethnl_default_start, 1094 .dumpit = ethnl_default_dumpit, 1095 .done = ethnl_default_done, 1096 .policy = ethnl_plca_get_cfg_policy, 1097 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1098 }, 1099 { 1100 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1101 .flags = GENL_UNS_ADMIN_PERM, 1102 .doit = ethnl_default_set_doit, 1103 .policy = ethnl_plca_set_cfg_policy, 1104 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1105 }, 1106 { 1107 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1108 .doit = ethnl_default_doit, 1109 .start = ethnl_default_start, 1110 .dumpit = ethnl_default_dumpit, 1111 .done = ethnl_default_done, 1112 .policy = ethnl_plca_get_status_policy, 1113 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1114 }, 1115 { 1116 .cmd = ETHTOOL_MSG_MM_GET, 1117 .doit = ethnl_default_doit, 1118 .start = ethnl_default_start, 1119 .dumpit = ethnl_default_dumpit, 1120 .done = ethnl_default_done, 1121 .policy = ethnl_mm_get_policy, 1122 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1123 }, 1124 { 1125 .cmd = ETHTOOL_MSG_MM_SET, 1126 .flags = GENL_UNS_ADMIN_PERM, 1127 .doit = ethnl_default_set_doit, 1128 .policy = ethnl_mm_set_policy, 1129 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1130 }, 1131 }; 1132 1133 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1134 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1135 }; 1136 1137 static struct genl_family ethtool_genl_family __ro_after_init = { 1138 .name = ETHTOOL_GENL_NAME, 1139 .version = ETHTOOL_GENL_VERSION, 1140 .netnsok = true, 1141 .parallel_ops = true, 1142 .ops = ethtool_genl_ops, 1143 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1144 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1145 .mcgrps = ethtool_nl_mcgrps, 1146 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1147 }; 1148 1149 /* module setup */ 1150 1151 static int __init ethnl_init(void) 1152 { 1153 int ret; 1154 1155 ret = genl_register_family(ðtool_genl_family); 1156 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1157 return ret; 1158 ethnl_ok = true; 1159 1160 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1161 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1162 return ret; 1163 } 1164 1165 subsys_initcall(ethnl_init); 1166