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 #include <linux/phy_link_topology.h> 8 9 static struct genl_family ethtool_genl_family; 10 11 static bool ethnl_ok __read_mostly; 12 static u32 ethnl_bcast_seq; 13 14 #define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \ 15 ETHTOOL_FLAG_OMIT_REPLY) 16 #define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS) 17 18 const struct nla_policy ethnl_header_policy[] = { 19 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 20 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 21 .len = ALTIFNAMSIZ - 1 }, 22 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 23 ETHTOOL_FLAGS_BASIC), 24 [ETHTOOL_A_HEADER_PHY_INDEX] = NLA_POLICY_MIN(NLA_U32, 1), 25 }; 26 27 const struct nla_policy ethnl_header_policy_stats[] = { 28 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 29 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 30 .len = ALTIFNAMSIZ - 1 }, 31 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 32 ETHTOOL_FLAGS_STATS), 33 [ETHTOOL_A_HEADER_PHY_INDEX] = NLA_POLICY_MIN(NLA_U32, 1), 34 }; 35 36 int ethnl_ops_begin(struct net_device *dev) 37 { 38 int ret; 39 40 if (!dev) 41 return -ENODEV; 42 43 if (dev->dev.parent) 44 pm_runtime_get_sync(dev->dev.parent); 45 46 if (!netif_device_present(dev) || 47 dev->reg_state == NETREG_UNREGISTERING) { 48 ret = -ENODEV; 49 goto err; 50 } 51 52 if (dev->ethtool_ops->begin) { 53 ret = dev->ethtool_ops->begin(dev); 54 if (ret) 55 goto err; 56 } 57 58 return 0; 59 err: 60 if (dev->dev.parent) 61 pm_runtime_put(dev->dev.parent); 62 63 return ret; 64 } 65 66 void ethnl_ops_complete(struct net_device *dev) 67 { 68 if (dev->ethtool_ops->complete) 69 dev->ethtool_ops->complete(dev); 70 71 if (dev->dev.parent) 72 pm_runtime_put(dev->dev.parent); 73 } 74 75 /** 76 * ethnl_parse_header_dev_get() - parse request header 77 * @req_info: structure to put results into 78 * @header: nest attribute with request header 79 * @net: request netns 80 * @extack: netlink extack for error reporting 81 * @require_dev: fail if no device identified in header 82 * 83 * Parse request header in nested attribute @nest and puts results into 84 * the structure pointed to by @req_info. Extack from @info is used for error 85 * reporting. If req_info->dev is not null on return, reference to it has 86 * been taken. If error is returned, *req_info is null initialized and no 87 * reference is held. 88 * 89 * Return: 0 on success or negative error code 90 */ 91 int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, 92 const struct nlattr *header, struct net *net, 93 struct netlink_ext_ack *extack, bool require_dev) 94 { 95 struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)]; 96 const struct nlattr *devname_attr; 97 struct phy_device *phydev = NULL; 98 struct net_device *dev = NULL; 99 u32 flags = 0; 100 int ret; 101 102 if (!header) { 103 if (!require_dev) 104 return 0; 105 NL_SET_ERR_MSG(extack, "request header missing"); 106 return -EINVAL; 107 } 108 /* No validation here, command policy should have a nested policy set 109 * for the header, therefore validation should have already been done. 110 */ 111 ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header, 112 NULL, extack); 113 if (ret < 0) 114 return ret; 115 if (tb[ETHTOOL_A_HEADER_FLAGS]) 116 flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); 117 118 devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; 119 if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { 120 u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); 121 122 dev = netdev_get_by_index(net, ifindex, &req_info->dev_tracker, 123 GFP_KERNEL); 124 if (!dev) { 125 NL_SET_ERR_MSG_ATTR(extack, 126 tb[ETHTOOL_A_HEADER_DEV_INDEX], 127 "no device matches ifindex"); 128 return -ENODEV; 129 } 130 /* if both ifindex and ifname are passed, they must match */ 131 if (devname_attr && 132 strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { 133 netdev_put(dev, &req_info->dev_tracker); 134 NL_SET_ERR_MSG_ATTR(extack, header, 135 "ifindex and name do not match"); 136 return -ENODEV; 137 } 138 } else if (devname_attr) { 139 dev = netdev_get_by_name(net, nla_data(devname_attr), 140 &req_info->dev_tracker, GFP_KERNEL); 141 if (!dev) { 142 NL_SET_ERR_MSG_ATTR(extack, devname_attr, 143 "no device matches name"); 144 return -ENODEV; 145 } 146 } else if (require_dev) { 147 NL_SET_ERR_MSG_ATTR(extack, header, 148 "neither ifindex nor name specified"); 149 return -EINVAL; 150 } 151 152 if (dev) { 153 if (tb[ETHTOOL_A_HEADER_PHY_INDEX]) { 154 u32 phy_index = nla_get_u32(tb[ETHTOOL_A_HEADER_PHY_INDEX]); 155 156 phydev = phy_link_topo_get_phy(&dev->link_topo, 157 phy_index); 158 if (!phydev) { 159 NL_SET_ERR_MSG_ATTR(extack, header, 160 "no phy matches phy index"); 161 return -EINVAL; 162 } 163 } else { 164 /* If we need a PHY but no phy index is specified, fallback 165 * to dev->phydev 166 */ 167 phydev = dev->phydev; 168 } 169 } 170 171 req_info->phydev = phydev; 172 req_info->dev = dev; 173 req_info->flags = flags; 174 return 0; 175 } 176 177 /** 178 * ethnl_fill_reply_header() - Put common header into a reply message 179 * @skb: skb with the message 180 * @dev: network device to describe in header 181 * @attrtype: attribute type to use for the nest 182 * 183 * Create a nested attribute with attributes describing given network device. 184 * 185 * Return: 0 on success, error value (-EMSGSIZE only) on error 186 */ 187 int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, 188 u16 attrtype) 189 { 190 struct nlattr *nest; 191 192 if (!dev) 193 return 0; 194 nest = nla_nest_start(skb, attrtype); 195 if (!nest) 196 return -EMSGSIZE; 197 198 if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || 199 nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) 200 goto nla_put_failure; 201 /* If more attributes are put into reply header, ethnl_header_size() 202 * must be updated to account for them. 203 */ 204 205 nla_nest_end(skb, nest); 206 return 0; 207 208 nla_put_failure: 209 nla_nest_cancel(skb, nest); 210 return -EMSGSIZE; 211 } 212 213 /** 214 * ethnl_reply_init() - Create skb for a reply and fill device identification 215 * @payload: payload length (without netlink and genetlink header) 216 * @dev: device the reply is about (may be null) 217 * @cmd: ETHTOOL_MSG_* message type for reply 218 * @hdr_attrtype: attribute type for common header 219 * @info: genetlink info of the received packet we respond to 220 * @ehdrp: place to store payload pointer returned by genlmsg_new() 221 * 222 * Return: pointer to allocated skb on success, NULL on error 223 */ 224 struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, 225 u16 hdr_attrtype, struct genl_info *info, 226 void **ehdrp) 227 { 228 struct sk_buff *skb; 229 230 skb = genlmsg_new(payload, GFP_KERNEL); 231 if (!skb) 232 goto err; 233 *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); 234 if (!*ehdrp) 235 goto err_free; 236 237 if (dev) { 238 int ret; 239 240 ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); 241 if (ret < 0) 242 goto err_free; 243 } 244 return skb; 245 246 err_free: 247 nlmsg_free(skb); 248 err: 249 if (info) 250 GENL_SET_ERR_MSG(info, "failed to setup reply message"); 251 return NULL; 252 } 253 254 void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd) 255 { 256 return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 257 ðtool_genl_family, 0, cmd); 258 } 259 260 void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) 261 { 262 return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0, 263 cmd); 264 } 265 266 int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) 267 { 268 return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, 269 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); 270 } 271 272 /* GET request helpers */ 273 274 /** 275 * struct ethnl_dump_ctx - context structure for generic dumpit() callback 276 * @ops: request ops of currently processed message type 277 * @req_info: parsed request header of processed request 278 * @reply_data: data needed to compose the reply 279 * @pos_ifindex: saved iteration position - ifindex 280 * 281 * These parameters are kept in struct netlink_callback as context preserved 282 * between iterations. They are initialized by ethnl_default_start() and used 283 * in ethnl_default_dumpit() and ethnl_default_done(). 284 */ 285 struct ethnl_dump_ctx { 286 const struct ethnl_request_ops *ops; 287 struct ethnl_req_info *req_info; 288 struct ethnl_reply_data *reply_data; 289 unsigned long pos_ifindex; 290 }; 291 292 static const struct ethnl_request_ops * 293 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { 294 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, 295 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, 296 [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops, 297 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, 298 [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops, 299 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, 300 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, 301 [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops, 302 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, 303 [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops, 304 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, 305 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, 306 [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops, 307 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, 308 [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops, 309 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, 310 [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops, 311 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, 312 [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops, 313 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, 314 [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops, 315 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, 316 [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops, 317 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops, 318 [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops, 319 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, 320 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops, 321 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops, 322 [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops, 323 [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops, 324 [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops, 325 [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops, 326 [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops, 327 [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops, 328 [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops, 329 [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops, 330 [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops, 331 [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops, 332 [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops, 333 }; 334 335 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) 336 { 337 return (struct ethnl_dump_ctx *)cb->ctx; 338 } 339 340 /** 341 * ethnl_default_parse() - Parse request message 342 * @req_info: pointer to structure to put data into 343 * @info: genl_info from the request 344 * @request_ops: struct request_ops for request type 345 * @require_dev: fail if no device identified in header 346 * 347 * Parse universal request header and call request specific ->parse_request() 348 * callback (if defined) to parse the rest of the message. 349 * 350 * Return: 0 on success or negative error code 351 */ 352 static int ethnl_default_parse(struct ethnl_req_info *req_info, 353 const struct genl_info *info, 354 const struct ethnl_request_ops *request_ops, 355 bool require_dev) 356 { 357 struct nlattr **tb = info->attrs; 358 int ret; 359 360 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], 361 genl_info_net(info), info->extack, 362 require_dev); 363 if (ret < 0) 364 return ret; 365 366 if (request_ops->parse_request) { 367 ret = request_ops->parse_request(req_info, tb, info->extack); 368 if (ret < 0) 369 return ret; 370 } 371 372 return 0; 373 } 374 375 /** 376 * ethnl_init_reply_data() - Initialize reply data for GET request 377 * @reply_data: pointer to embedded struct ethnl_reply_data 378 * @ops: instance of struct ethnl_request_ops describing the layout 379 * @dev: network device to initialize the reply for 380 * 381 * Fills the reply data part with zeros and sets the dev member. Must be called 382 * before calling the ->fill_reply() callback (for each iteration when handling 383 * dump requests). 384 */ 385 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, 386 const struct ethnl_request_ops *ops, 387 struct net_device *dev) 388 { 389 memset(reply_data, 0, ops->reply_data_size); 390 reply_data->dev = dev; 391 } 392 393 /* default ->doit() handler for GET type requests */ 394 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) 395 { 396 struct ethnl_reply_data *reply_data = NULL; 397 struct ethnl_req_info *req_info = NULL; 398 const u8 cmd = info->genlhdr->cmd; 399 const struct ethnl_request_ops *ops; 400 int hdr_len, reply_len; 401 struct sk_buff *rskb; 402 void *reply_payload; 403 int ret; 404 405 ops = ethnl_default_requests[cmd]; 406 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 407 return -EOPNOTSUPP; 408 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 409 return -EINVAL; 410 411 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 412 if (!req_info) 413 return -ENOMEM; 414 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 415 if (!reply_data) { 416 kfree(req_info); 417 return -ENOMEM; 418 } 419 420 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); 421 if (ret < 0) 422 goto err_dev; 423 ethnl_init_reply_data(reply_data, ops, req_info->dev); 424 425 rtnl_lock(); 426 ret = ops->prepare_data(req_info, reply_data, info); 427 rtnl_unlock(); 428 if (ret < 0) 429 goto err_cleanup; 430 ret = ops->reply_size(req_info, reply_data); 431 if (ret < 0) 432 goto err_cleanup; 433 reply_len = ret; 434 ret = -ENOMEM; 435 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), 436 req_info->dev, ops->reply_cmd, 437 ops->hdr_attr, info, &reply_payload); 438 if (!rskb) 439 goto err_cleanup; 440 hdr_len = rskb->len; 441 ret = ops->fill_reply(rskb, req_info, reply_data); 442 if (ret < 0) 443 goto err_msg; 444 WARN_ONCE(rskb->len - hdr_len > reply_len, 445 "ethnl cmd %d: calculated reply length %d, but consumed %d\n", 446 cmd, reply_len, rskb->len - hdr_len); 447 if (ops->cleanup_data) 448 ops->cleanup_data(reply_data); 449 450 genlmsg_end(rskb, reply_payload); 451 netdev_put(req_info->dev, &req_info->dev_tracker); 452 kfree(reply_data); 453 kfree(req_info); 454 return genlmsg_reply(rskb, info); 455 456 err_msg: 457 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); 458 nlmsg_free(rskb); 459 err_cleanup: 460 if (ops->cleanup_data) 461 ops->cleanup_data(reply_data); 462 err_dev: 463 netdev_put(req_info->dev, &req_info->dev_tracker); 464 kfree(reply_data); 465 kfree(req_info); 466 return ret; 467 } 468 469 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, 470 const struct ethnl_dump_ctx *ctx, 471 const struct genl_info *info) 472 { 473 void *ehdr; 474 int ret; 475 476 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 477 ðtool_genl_family, NLM_F_MULTI, 478 ctx->ops->reply_cmd); 479 if (!ehdr) 480 return -EMSGSIZE; 481 482 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); 483 rtnl_lock(); 484 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); 485 rtnl_unlock(); 486 if (ret < 0) 487 goto out; 488 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); 489 if (ret < 0) 490 goto out; 491 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); 492 493 out: 494 if (ctx->ops->cleanup_data) 495 ctx->ops->cleanup_data(ctx->reply_data); 496 ctx->reply_data->dev = NULL; 497 if (ret < 0) 498 genlmsg_cancel(skb, ehdr); 499 else 500 genlmsg_end(skb, ehdr); 501 return ret; 502 } 503 504 /* Default ->dumpit() handler for GET requests. Device iteration copied from 505 * rtnl_dump_ifinfo(); we have to be more careful about device hashtable 506 * persistence as we cannot guarantee to hold RTNL lock through the whole 507 * function as rtnetnlink does. 508 */ 509 static int ethnl_default_dumpit(struct sk_buff *skb, 510 struct netlink_callback *cb) 511 { 512 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 513 struct net *net = sock_net(skb->sk); 514 struct net_device *dev; 515 int ret = 0; 516 517 rtnl_lock(); 518 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 519 dev_hold(dev); 520 rtnl_unlock(); 521 522 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 523 524 rtnl_lock(); 525 dev_put(dev); 526 527 if (ret < 0 && ret != -EOPNOTSUPP) { 528 if (likely(skb->len)) 529 ret = skb->len; 530 break; 531 } 532 ret = 0; 533 } 534 rtnl_unlock(); 535 536 return ret; 537 } 538 539 /* generic ->start() handler for GET requests */ 540 static int ethnl_default_start(struct netlink_callback *cb) 541 { 542 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 543 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 544 struct ethnl_reply_data *reply_data; 545 const struct ethnl_request_ops *ops; 546 struct ethnl_req_info *req_info; 547 struct genlmsghdr *ghdr; 548 int ret; 549 550 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 551 552 ghdr = nlmsg_data(cb->nlh); 553 ops = ethnl_default_requests[ghdr->cmd]; 554 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 555 return -EOPNOTSUPP; 556 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 557 if (!req_info) 558 return -ENOMEM; 559 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 560 if (!reply_data) { 561 ret = -ENOMEM; 562 goto free_req_info; 563 } 564 565 ret = ethnl_default_parse(req_info, &info->info, ops, false); 566 if (req_info->dev) { 567 /* We ignore device specification in dump requests but as the 568 * same parser as for non-dump (doit) requests is used, it 569 * would take reference to the device if it finds one 570 */ 571 netdev_put(req_info->dev, &req_info->dev_tracker); 572 req_info->dev = NULL; 573 } 574 if (ret < 0) 575 goto free_reply_data; 576 577 ctx->ops = ops; 578 ctx->req_info = req_info; 579 ctx->reply_data = reply_data; 580 ctx->pos_ifindex = 0; 581 582 return 0; 583 584 free_reply_data: 585 kfree(reply_data); 586 free_req_info: 587 kfree(req_info); 588 589 return ret; 590 } 591 592 /* default ->done() handler for GET requests */ 593 static int ethnl_default_done(struct netlink_callback *cb) 594 { 595 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 596 597 kfree(ctx->reply_data); 598 kfree(ctx->req_info); 599 600 return 0; 601 } 602 603 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 604 { 605 const struct ethnl_request_ops *ops; 606 struct ethnl_req_info req_info = {}; 607 const u8 cmd = info->genlhdr->cmd; 608 int ret; 609 610 ops = ethnl_default_requests[cmd]; 611 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 612 return -EOPNOTSUPP; 613 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 614 return -EINVAL; 615 616 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr], 617 genl_info_net(info), info->extack, 618 true); 619 if (ret < 0) 620 return ret; 621 622 if (ops->set_validate) { 623 ret = ops->set_validate(&req_info, info); 624 /* 0 means nothing to do */ 625 if (ret <= 0) 626 goto out_dev; 627 } 628 629 rtnl_lock(); 630 ret = ethnl_ops_begin(req_info.dev); 631 if (ret < 0) 632 goto out_rtnl; 633 634 ret = ops->set(&req_info, info); 635 if (ret <= 0) 636 goto out_ops; 637 ethtool_notify(req_info.dev, ops->set_ntf_cmd, NULL); 638 639 ret = 0; 640 out_ops: 641 ethnl_ops_complete(req_info.dev); 642 out_rtnl: 643 rtnl_unlock(); 644 out_dev: 645 ethnl_parse_header_dev_put(&req_info); 646 return ret; 647 } 648 649 static const struct ethnl_request_ops * 650 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 651 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 652 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 653 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 654 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 655 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 656 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 657 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 658 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 659 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 660 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 661 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 662 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 663 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 664 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 665 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 666 }; 667 668 /* default notification handler */ 669 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 670 const void *data) 671 { 672 struct ethnl_reply_data *reply_data; 673 const struct ethnl_request_ops *ops; 674 struct ethnl_req_info *req_info; 675 struct genl_info info; 676 struct sk_buff *skb; 677 void *reply_payload; 678 int reply_len; 679 int ret; 680 681 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 682 683 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 684 !ethnl_default_notify_ops[cmd], 685 "unexpected notification type %u\n", cmd)) 686 return; 687 ops = ethnl_default_notify_ops[cmd]; 688 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 689 if (!req_info) 690 return; 691 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 692 if (!reply_data) { 693 kfree(req_info); 694 return; 695 } 696 697 req_info->dev = dev; 698 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 699 700 ethnl_init_reply_data(reply_data, ops, dev); 701 ret = ops->prepare_data(req_info, reply_data, &info); 702 if (ret < 0) 703 goto err_cleanup; 704 ret = ops->reply_size(req_info, reply_data); 705 if (ret < 0) 706 goto err_cleanup; 707 reply_len = ret + ethnl_reply_header_size(); 708 skb = genlmsg_new(reply_len, GFP_KERNEL); 709 if (!skb) 710 goto err_cleanup; 711 reply_payload = ethnl_bcastmsg_put(skb, cmd); 712 if (!reply_payload) 713 goto err_skb; 714 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 715 if (ret < 0) 716 goto err_msg; 717 ret = ops->fill_reply(skb, req_info, reply_data); 718 if (ret < 0) 719 goto err_msg; 720 if (ops->cleanup_data) 721 ops->cleanup_data(reply_data); 722 723 genlmsg_end(skb, reply_payload); 724 kfree(reply_data); 725 kfree(req_info); 726 ethnl_multicast(skb, dev); 727 return; 728 729 err_msg: 730 WARN_ONCE(ret == -EMSGSIZE, 731 "calculated message payload length (%d) not sufficient\n", 732 reply_len); 733 err_skb: 734 nlmsg_free(skb); 735 err_cleanup: 736 if (ops->cleanup_data) 737 ops->cleanup_data(reply_data); 738 kfree(reply_data); 739 kfree(req_info); 740 return; 741 } 742 743 /* notifications */ 744 745 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 746 const void *data); 747 748 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 749 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 750 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 751 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 752 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 753 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 754 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 755 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 756 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 757 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 758 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 759 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 760 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 761 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 762 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 763 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 764 }; 765 766 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) 767 { 768 if (unlikely(!ethnl_ok)) 769 return; 770 ASSERT_RTNL(); 771 772 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 773 ethnl_notify_handlers[cmd])) 774 ethnl_notify_handlers[cmd](dev, cmd, data); 775 else 776 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 777 cmd, netdev_name(dev)); 778 } 779 EXPORT_SYMBOL(ethtool_notify); 780 781 static void ethnl_notify_features(struct netdev_notifier_info *info) 782 { 783 struct net_device *dev = netdev_notifier_info_to_dev(info); 784 785 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); 786 } 787 788 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 789 void *ptr) 790 { 791 switch (event) { 792 case NETDEV_FEAT_CHANGE: 793 ethnl_notify_features(ptr); 794 break; 795 } 796 797 return NOTIFY_DONE; 798 } 799 800 static struct notifier_block ethnl_netdev_notifier = { 801 .notifier_call = ethnl_netdev_event, 802 }; 803 804 /* genetlink setup */ 805 806 static const struct genl_ops ethtool_genl_ops[] = { 807 { 808 .cmd = ETHTOOL_MSG_STRSET_GET, 809 .doit = ethnl_default_doit, 810 .start = ethnl_default_start, 811 .dumpit = ethnl_default_dumpit, 812 .done = ethnl_default_done, 813 .policy = ethnl_strset_get_policy, 814 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 815 }, 816 { 817 .cmd = ETHTOOL_MSG_LINKINFO_GET, 818 .doit = ethnl_default_doit, 819 .start = ethnl_default_start, 820 .dumpit = ethnl_default_dumpit, 821 .done = ethnl_default_done, 822 .policy = ethnl_linkinfo_get_policy, 823 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 824 }, 825 { 826 .cmd = ETHTOOL_MSG_LINKINFO_SET, 827 .flags = GENL_UNS_ADMIN_PERM, 828 .doit = ethnl_default_set_doit, 829 .policy = ethnl_linkinfo_set_policy, 830 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 831 }, 832 { 833 .cmd = ETHTOOL_MSG_LINKMODES_GET, 834 .doit = ethnl_default_doit, 835 .start = ethnl_default_start, 836 .dumpit = ethnl_default_dumpit, 837 .done = ethnl_default_done, 838 .policy = ethnl_linkmodes_get_policy, 839 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 840 }, 841 { 842 .cmd = ETHTOOL_MSG_LINKMODES_SET, 843 .flags = GENL_UNS_ADMIN_PERM, 844 .doit = ethnl_default_set_doit, 845 .policy = ethnl_linkmodes_set_policy, 846 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 847 }, 848 { 849 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 850 .doit = ethnl_default_doit, 851 .start = ethnl_default_start, 852 .dumpit = ethnl_default_dumpit, 853 .done = ethnl_default_done, 854 .policy = ethnl_linkstate_get_policy, 855 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 856 }, 857 { 858 .cmd = ETHTOOL_MSG_DEBUG_GET, 859 .doit = ethnl_default_doit, 860 .start = ethnl_default_start, 861 .dumpit = ethnl_default_dumpit, 862 .done = ethnl_default_done, 863 .policy = ethnl_debug_get_policy, 864 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 865 }, 866 { 867 .cmd = ETHTOOL_MSG_DEBUG_SET, 868 .flags = GENL_UNS_ADMIN_PERM, 869 .doit = ethnl_default_set_doit, 870 .policy = ethnl_debug_set_policy, 871 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 872 }, 873 { 874 .cmd = ETHTOOL_MSG_WOL_GET, 875 .flags = GENL_UNS_ADMIN_PERM, 876 .doit = ethnl_default_doit, 877 .start = ethnl_default_start, 878 .dumpit = ethnl_default_dumpit, 879 .done = ethnl_default_done, 880 .policy = ethnl_wol_get_policy, 881 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 882 }, 883 { 884 .cmd = ETHTOOL_MSG_WOL_SET, 885 .flags = GENL_UNS_ADMIN_PERM, 886 .doit = ethnl_default_set_doit, 887 .policy = ethnl_wol_set_policy, 888 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 889 }, 890 { 891 .cmd = ETHTOOL_MSG_FEATURES_GET, 892 .doit = ethnl_default_doit, 893 .start = ethnl_default_start, 894 .dumpit = ethnl_default_dumpit, 895 .done = ethnl_default_done, 896 .policy = ethnl_features_get_policy, 897 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 898 }, 899 { 900 .cmd = ETHTOOL_MSG_FEATURES_SET, 901 .flags = GENL_UNS_ADMIN_PERM, 902 .doit = ethnl_set_features, 903 .policy = ethnl_features_set_policy, 904 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 905 }, 906 { 907 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 908 .doit = ethnl_default_doit, 909 .start = ethnl_default_start, 910 .dumpit = ethnl_default_dumpit, 911 .done = ethnl_default_done, 912 .policy = ethnl_privflags_get_policy, 913 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 914 }, 915 { 916 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 917 .flags = GENL_UNS_ADMIN_PERM, 918 .doit = ethnl_default_set_doit, 919 .policy = ethnl_privflags_set_policy, 920 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 921 }, 922 { 923 .cmd = ETHTOOL_MSG_RINGS_GET, 924 .doit = ethnl_default_doit, 925 .start = ethnl_default_start, 926 .dumpit = ethnl_default_dumpit, 927 .done = ethnl_default_done, 928 .policy = ethnl_rings_get_policy, 929 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 930 }, 931 { 932 .cmd = ETHTOOL_MSG_RINGS_SET, 933 .flags = GENL_UNS_ADMIN_PERM, 934 .doit = ethnl_default_set_doit, 935 .policy = ethnl_rings_set_policy, 936 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 937 }, 938 { 939 .cmd = ETHTOOL_MSG_CHANNELS_GET, 940 .doit = ethnl_default_doit, 941 .start = ethnl_default_start, 942 .dumpit = ethnl_default_dumpit, 943 .done = ethnl_default_done, 944 .policy = ethnl_channels_get_policy, 945 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 946 }, 947 { 948 .cmd = ETHTOOL_MSG_CHANNELS_SET, 949 .flags = GENL_UNS_ADMIN_PERM, 950 .doit = ethnl_default_set_doit, 951 .policy = ethnl_channels_set_policy, 952 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 953 }, 954 { 955 .cmd = ETHTOOL_MSG_COALESCE_GET, 956 .doit = ethnl_default_doit, 957 .start = ethnl_default_start, 958 .dumpit = ethnl_default_dumpit, 959 .done = ethnl_default_done, 960 .policy = ethnl_coalesce_get_policy, 961 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 962 }, 963 { 964 .cmd = ETHTOOL_MSG_COALESCE_SET, 965 .flags = GENL_UNS_ADMIN_PERM, 966 .doit = ethnl_default_set_doit, 967 .policy = ethnl_coalesce_set_policy, 968 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 969 }, 970 { 971 .cmd = ETHTOOL_MSG_PAUSE_GET, 972 .doit = ethnl_default_doit, 973 .start = ethnl_default_start, 974 .dumpit = ethnl_default_dumpit, 975 .done = ethnl_default_done, 976 .policy = ethnl_pause_get_policy, 977 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 978 }, 979 { 980 .cmd = ETHTOOL_MSG_PAUSE_SET, 981 .flags = GENL_UNS_ADMIN_PERM, 982 .doit = ethnl_default_set_doit, 983 .policy = ethnl_pause_set_policy, 984 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 985 }, 986 { 987 .cmd = ETHTOOL_MSG_EEE_GET, 988 .doit = ethnl_default_doit, 989 .start = ethnl_default_start, 990 .dumpit = ethnl_default_dumpit, 991 .done = ethnl_default_done, 992 .policy = ethnl_eee_get_policy, 993 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 994 }, 995 { 996 .cmd = ETHTOOL_MSG_EEE_SET, 997 .flags = GENL_UNS_ADMIN_PERM, 998 .doit = ethnl_default_set_doit, 999 .policy = ethnl_eee_set_policy, 1000 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 1001 }, 1002 { 1003 .cmd = ETHTOOL_MSG_TSINFO_GET, 1004 .doit = ethnl_default_doit, 1005 .start = ethnl_default_start, 1006 .dumpit = ethnl_default_dumpit, 1007 .done = ethnl_default_done, 1008 .policy = ethnl_tsinfo_get_policy, 1009 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 1010 }, 1011 { 1012 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 1013 .flags = GENL_UNS_ADMIN_PERM, 1014 .doit = ethnl_act_cable_test, 1015 .policy = ethnl_cable_test_act_policy, 1016 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 1017 }, 1018 { 1019 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 1020 .flags = GENL_UNS_ADMIN_PERM, 1021 .doit = ethnl_act_cable_test_tdr, 1022 .policy = ethnl_cable_test_tdr_act_policy, 1023 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 1024 }, 1025 { 1026 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1027 .doit = ethnl_tunnel_info_doit, 1028 .start = ethnl_tunnel_info_start, 1029 .dumpit = ethnl_tunnel_info_dumpit, 1030 .policy = ethnl_tunnel_info_get_policy, 1031 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1032 }, 1033 { 1034 .cmd = ETHTOOL_MSG_FEC_GET, 1035 .doit = ethnl_default_doit, 1036 .start = ethnl_default_start, 1037 .dumpit = ethnl_default_dumpit, 1038 .done = ethnl_default_done, 1039 .policy = ethnl_fec_get_policy, 1040 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1041 }, 1042 { 1043 .cmd = ETHTOOL_MSG_FEC_SET, 1044 .flags = GENL_UNS_ADMIN_PERM, 1045 .doit = ethnl_default_set_doit, 1046 .policy = ethnl_fec_set_policy, 1047 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1048 }, 1049 { 1050 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1051 .flags = GENL_UNS_ADMIN_PERM, 1052 .doit = ethnl_default_doit, 1053 .start = ethnl_default_start, 1054 .dumpit = ethnl_default_dumpit, 1055 .done = ethnl_default_done, 1056 .policy = ethnl_module_eeprom_get_policy, 1057 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1058 }, 1059 { 1060 .cmd = ETHTOOL_MSG_STATS_GET, 1061 .doit = ethnl_default_doit, 1062 .start = ethnl_default_start, 1063 .dumpit = ethnl_default_dumpit, 1064 .done = ethnl_default_done, 1065 .policy = ethnl_stats_get_policy, 1066 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1067 }, 1068 { 1069 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1070 .doit = ethnl_default_doit, 1071 .start = ethnl_default_start, 1072 .dumpit = ethnl_default_dumpit, 1073 .done = ethnl_default_done, 1074 .policy = ethnl_phc_vclocks_get_policy, 1075 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1076 }, 1077 { 1078 .cmd = ETHTOOL_MSG_MODULE_GET, 1079 .doit = ethnl_default_doit, 1080 .start = ethnl_default_start, 1081 .dumpit = ethnl_default_dumpit, 1082 .done = ethnl_default_done, 1083 .policy = ethnl_module_get_policy, 1084 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1085 }, 1086 { 1087 .cmd = ETHTOOL_MSG_MODULE_SET, 1088 .flags = GENL_UNS_ADMIN_PERM, 1089 .doit = ethnl_default_set_doit, 1090 .policy = ethnl_module_set_policy, 1091 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1092 }, 1093 { 1094 .cmd = ETHTOOL_MSG_PSE_GET, 1095 .doit = ethnl_default_doit, 1096 .start = ethnl_default_start, 1097 .dumpit = ethnl_default_dumpit, 1098 .done = ethnl_default_done, 1099 .policy = ethnl_pse_get_policy, 1100 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1101 }, 1102 { 1103 .cmd = ETHTOOL_MSG_PSE_SET, 1104 .flags = GENL_UNS_ADMIN_PERM, 1105 .doit = ethnl_default_set_doit, 1106 .policy = ethnl_pse_set_policy, 1107 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1108 }, 1109 { 1110 .cmd = ETHTOOL_MSG_RSS_GET, 1111 .doit = ethnl_default_doit, 1112 .policy = ethnl_rss_get_policy, 1113 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1114 }, 1115 { 1116 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1117 .doit = ethnl_default_doit, 1118 .start = ethnl_default_start, 1119 .dumpit = ethnl_default_dumpit, 1120 .done = ethnl_default_done, 1121 .policy = ethnl_plca_get_cfg_policy, 1122 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1123 }, 1124 { 1125 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1126 .flags = GENL_UNS_ADMIN_PERM, 1127 .doit = ethnl_default_set_doit, 1128 .policy = ethnl_plca_set_cfg_policy, 1129 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1130 }, 1131 { 1132 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1133 .doit = ethnl_default_doit, 1134 .start = ethnl_default_start, 1135 .dumpit = ethnl_default_dumpit, 1136 .done = ethnl_default_done, 1137 .policy = ethnl_plca_get_status_policy, 1138 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1139 }, 1140 { 1141 .cmd = ETHTOOL_MSG_MM_GET, 1142 .doit = ethnl_default_doit, 1143 .start = ethnl_default_start, 1144 .dumpit = ethnl_default_dumpit, 1145 .done = ethnl_default_done, 1146 .policy = ethnl_mm_get_policy, 1147 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1148 }, 1149 { 1150 .cmd = ETHTOOL_MSG_MM_SET, 1151 .flags = GENL_UNS_ADMIN_PERM, 1152 .doit = ethnl_default_set_doit, 1153 .policy = ethnl_mm_set_policy, 1154 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1155 }, 1156 { 1157 .cmd = ETHTOOL_MSG_PHY_GET, 1158 .doit = ethnl_phy_doit, 1159 .start = ethnl_phy_start, 1160 .dumpit = ethnl_phy_dumpit, 1161 .done = ethnl_phy_done, 1162 .policy = ethnl_phy_get_policy, 1163 .maxattr = ARRAY_SIZE(ethnl_phy_get_policy) - 1, 1164 }, 1165 }; 1166 1167 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1168 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1169 }; 1170 1171 static struct genl_family ethtool_genl_family __ro_after_init = { 1172 .name = ETHTOOL_GENL_NAME, 1173 .version = ETHTOOL_GENL_VERSION, 1174 .netnsok = true, 1175 .parallel_ops = true, 1176 .ops = ethtool_genl_ops, 1177 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1178 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1179 .mcgrps = ethtool_nl_mcgrps, 1180 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1181 }; 1182 1183 /* module setup */ 1184 1185 static int __init ethnl_init(void) 1186 { 1187 int ret; 1188 1189 ret = genl_register_family(ðtool_genl_family); 1190 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1191 return ret; 1192 ethnl_ok = true; 1193 1194 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1195 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1196 return ret; 1197 } 1198 1199 subsys_initcall(ethnl_init); 1200