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 "module_fw.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 }; 25 26 const struct nla_policy ethnl_header_policy_stats[] = { 27 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 28 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 29 .len = ALTIFNAMSIZ - 1 }, 30 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 31 ETHTOOL_FLAGS_STATS), 32 }; 33 34 int ethnl_sock_priv_set(struct sk_buff *skb, struct net_device *dev, u32 portid, 35 enum ethnl_sock_type type) 36 { 37 struct ethnl_sock_priv *sk_priv; 38 39 sk_priv = genl_sk_priv_get(ðtool_genl_family, NETLINK_CB(skb).sk); 40 if (IS_ERR(sk_priv)) 41 return PTR_ERR(sk_priv); 42 43 sk_priv->dev = dev; 44 sk_priv->portid = portid; 45 sk_priv->type = type; 46 47 return 0; 48 } 49 50 static void ethnl_sock_priv_destroy(void *priv) 51 { 52 struct ethnl_sock_priv *sk_priv = priv; 53 54 switch (sk_priv->type) { 55 case ETHTOOL_SOCK_TYPE_MODULE_FW_FLASH: 56 ethnl_module_fw_flash_sock_destroy(sk_priv); 57 break; 58 default: 59 break; 60 } 61 } 62 63 int ethnl_ops_begin(struct net_device *dev) 64 { 65 int ret; 66 67 if (!dev) 68 return -ENODEV; 69 70 if (dev->dev.parent) 71 pm_runtime_get_sync(dev->dev.parent); 72 73 if (!netif_device_present(dev) || 74 dev->reg_state == NETREG_UNREGISTERING) { 75 ret = -ENODEV; 76 goto err; 77 } 78 79 if (dev->ethtool_ops->begin) { 80 ret = dev->ethtool_ops->begin(dev); 81 if (ret) 82 goto err; 83 } 84 85 return 0; 86 err: 87 if (dev->dev.parent) 88 pm_runtime_put(dev->dev.parent); 89 90 return ret; 91 } 92 93 void ethnl_ops_complete(struct net_device *dev) 94 { 95 if (dev->ethtool_ops->complete) 96 dev->ethtool_ops->complete(dev); 97 98 if (dev->dev.parent) 99 pm_runtime_put(dev->dev.parent); 100 } 101 102 /** 103 * ethnl_parse_header_dev_get() - parse request header 104 * @req_info: structure to put results into 105 * @header: nest attribute with request header 106 * @net: request netns 107 * @extack: netlink extack for error reporting 108 * @require_dev: fail if no device identified in header 109 * 110 * Parse request header in nested attribute @nest and puts results into 111 * the structure pointed to by @req_info. Extack from @info is used for error 112 * reporting. If req_info->dev is not null on return, reference to it has 113 * been taken. If error is returned, *req_info is null initialized and no 114 * reference is held. 115 * 116 * Return: 0 on success or negative error code 117 */ 118 int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, 119 const struct nlattr *header, struct net *net, 120 struct netlink_ext_ack *extack, bool require_dev) 121 { 122 struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy)]; 123 const struct nlattr *devname_attr; 124 struct net_device *dev = NULL; 125 u32 flags = 0; 126 int ret; 127 128 if (!header) { 129 if (!require_dev) 130 return 0; 131 NL_SET_ERR_MSG(extack, "request header missing"); 132 return -EINVAL; 133 } 134 /* No validation here, command policy should have a nested policy set 135 * for the header, therefore validation should have already been done. 136 */ 137 ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy) - 1, header, 138 NULL, extack); 139 if (ret < 0) 140 return ret; 141 if (tb[ETHTOOL_A_HEADER_FLAGS]) 142 flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); 143 144 devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; 145 if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { 146 u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); 147 148 dev = netdev_get_by_index(net, ifindex, &req_info->dev_tracker, 149 GFP_KERNEL); 150 if (!dev) { 151 NL_SET_ERR_MSG_ATTR(extack, 152 tb[ETHTOOL_A_HEADER_DEV_INDEX], 153 "no device matches ifindex"); 154 return -ENODEV; 155 } 156 /* if both ifindex and ifname are passed, they must match */ 157 if (devname_attr && 158 strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { 159 netdev_put(dev, &req_info->dev_tracker); 160 NL_SET_ERR_MSG_ATTR(extack, header, 161 "ifindex and name do not match"); 162 return -ENODEV; 163 } 164 } else if (devname_attr) { 165 dev = netdev_get_by_name(net, nla_data(devname_attr), 166 &req_info->dev_tracker, GFP_KERNEL); 167 if (!dev) { 168 NL_SET_ERR_MSG_ATTR(extack, devname_attr, 169 "no device matches name"); 170 return -ENODEV; 171 } 172 } else if (require_dev) { 173 NL_SET_ERR_MSG_ATTR(extack, header, 174 "neither ifindex nor name specified"); 175 return -EINVAL; 176 } 177 178 req_info->dev = dev; 179 req_info->flags = flags; 180 return 0; 181 } 182 183 /** 184 * ethnl_fill_reply_header() - Put common header into a reply message 185 * @skb: skb with the message 186 * @dev: network device to describe in header 187 * @attrtype: attribute type to use for the nest 188 * 189 * Create a nested attribute with attributes describing given network device. 190 * 191 * Return: 0 on success, error value (-EMSGSIZE only) on error 192 */ 193 int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, 194 u16 attrtype) 195 { 196 struct nlattr *nest; 197 198 if (!dev) 199 return 0; 200 nest = nla_nest_start(skb, attrtype); 201 if (!nest) 202 return -EMSGSIZE; 203 204 if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || 205 nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) 206 goto nla_put_failure; 207 /* If more attributes are put into reply header, ethnl_header_size() 208 * must be updated to account for them. 209 */ 210 211 nla_nest_end(skb, nest); 212 return 0; 213 214 nla_put_failure: 215 nla_nest_cancel(skb, nest); 216 return -EMSGSIZE; 217 } 218 219 /** 220 * ethnl_reply_init() - Create skb for a reply and fill device identification 221 * @payload: payload length (without netlink and genetlink header) 222 * @dev: device the reply is about (may be null) 223 * @cmd: ETHTOOL_MSG_* message type for reply 224 * @hdr_attrtype: attribute type for common header 225 * @info: genetlink info of the received packet we respond to 226 * @ehdrp: place to store payload pointer returned by genlmsg_new() 227 * 228 * Return: pointer to allocated skb on success, NULL on error 229 */ 230 struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, 231 u16 hdr_attrtype, struct genl_info *info, 232 void **ehdrp) 233 { 234 struct sk_buff *skb; 235 236 skb = genlmsg_new(payload, GFP_KERNEL); 237 if (!skb) 238 goto err; 239 *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); 240 if (!*ehdrp) 241 goto err_free; 242 243 if (dev) { 244 int ret; 245 246 ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); 247 if (ret < 0) 248 goto err_free; 249 } 250 return skb; 251 252 err_free: 253 nlmsg_free(skb); 254 err: 255 if (info) 256 GENL_SET_ERR_MSG(info, "failed to setup reply message"); 257 return NULL; 258 } 259 260 void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd) 261 { 262 return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 263 ðtool_genl_family, 0, cmd); 264 } 265 266 void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) 267 { 268 return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0, 269 cmd); 270 } 271 272 void *ethnl_unicast_put(struct sk_buff *skb, u32 portid, u32 seq, u8 cmd) 273 { 274 return genlmsg_put(skb, portid, seq, ðtool_genl_family, 0, cmd); 275 } 276 277 int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) 278 { 279 return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, 280 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); 281 } 282 283 /* GET request helpers */ 284 285 /** 286 * struct ethnl_dump_ctx - context structure for generic dumpit() callback 287 * @ops: request ops of currently processed message type 288 * @req_info: parsed request header of processed request 289 * @reply_data: data needed to compose the reply 290 * @pos_ifindex: saved iteration position - ifindex 291 * 292 * These parameters are kept in struct netlink_callback as context preserved 293 * between iterations. They are initialized by ethnl_default_start() and used 294 * in ethnl_default_dumpit() and ethnl_default_done(). 295 */ 296 struct ethnl_dump_ctx { 297 const struct ethnl_request_ops *ops; 298 struct ethnl_req_info *req_info; 299 struct ethnl_reply_data *reply_data; 300 unsigned long pos_ifindex; 301 }; 302 303 static const struct ethnl_request_ops * 304 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { 305 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, 306 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, 307 [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops, 308 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, 309 [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops, 310 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, 311 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, 312 [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops, 313 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, 314 [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops, 315 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, 316 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, 317 [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops, 318 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, 319 [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops, 320 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, 321 [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops, 322 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, 323 [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops, 324 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, 325 [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops, 326 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, 327 [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops, 328 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops, 329 [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops, 330 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, 331 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops, 332 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops, 333 [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops, 334 [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops, 335 [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops, 336 [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops, 337 [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops, 338 [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops, 339 [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops, 340 [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops, 341 [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops, 342 [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops, 343 [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops, 344 }; 345 346 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) 347 { 348 return (struct ethnl_dump_ctx *)cb->ctx; 349 } 350 351 /** 352 * ethnl_default_parse() - Parse request message 353 * @req_info: pointer to structure to put data into 354 * @info: genl_info from the request 355 * @request_ops: struct request_ops for request type 356 * @require_dev: fail if no device identified in header 357 * 358 * Parse universal request header and call request specific ->parse_request() 359 * callback (if defined) to parse the rest of the message. 360 * 361 * Return: 0 on success or negative error code 362 */ 363 static int ethnl_default_parse(struct ethnl_req_info *req_info, 364 const struct genl_info *info, 365 const struct ethnl_request_ops *request_ops, 366 bool require_dev) 367 { 368 struct nlattr **tb = info->attrs; 369 int ret; 370 371 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], 372 genl_info_net(info), info->extack, 373 require_dev); 374 if (ret < 0) 375 return ret; 376 377 if (request_ops->parse_request) { 378 ret = request_ops->parse_request(req_info, tb, info->extack); 379 if (ret < 0) 380 return ret; 381 } 382 383 return 0; 384 } 385 386 /** 387 * ethnl_init_reply_data() - Initialize reply data for GET request 388 * @reply_data: pointer to embedded struct ethnl_reply_data 389 * @ops: instance of struct ethnl_request_ops describing the layout 390 * @dev: network device to initialize the reply for 391 * 392 * Fills the reply data part with zeros and sets the dev member. Must be called 393 * before calling the ->fill_reply() callback (for each iteration when handling 394 * dump requests). 395 */ 396 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, 397 const struct ethnl_request_ops *ops, 398 struct net_device *dev) 399 { 400 memset(reply_data, 0, ops->reply_data_size); 401 reply_data->dev = dev; 402 } 403 404 /* default ->doit() handler for GET type requests */ 405 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) 406 { 407 struct ethnl_reply_data *reply_data = NULL; 408 struct ethnl_req_info *req_info = NULL; 409 const u8 cmd = info->genlhdr->cmd; 410 const struct ethnl_request_ops *ops; 411 int hdr_len, reply_len; 412 struct sk_buff *rskb; 413 void *reply_payload; 414 int ret; 415 416 ops = ethnl_default_requests[cmd]; 417 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 418 return -EOPNOTSUPP; 419 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 420 return -EINVAL; 421 422 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 423 if (!req_info) 424 return -ENOMEM; 425 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 426 if (!reply_data) { 427 kfree(req_info); 428 return -ENOMEM; 429 } 430 431 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); 432 if (ret < 0) 433 goto err_dev; 434 ethnl_init_reply_data(reply_data, ops, req_info->dev); 435 436 rtnl_lock(); 437 ret = ops->prepare_data(req_info, reply_data, info); 438 rtnl_unlock(); 439 if (ret < 0) 440 goto err_cleanup; 441 ret = ops->reply_size(req_info, reply_data); 442 if (ret < 0) 443 goto err_cleanup; 444 reply_len = ret; 445 ret = -ENOMEM; 446 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), 447 req_info->dev, ops->reply_cmd, 448 ops->hdr_attr, info, &reply_payload); 449 if (!rskb) 450 goto err_cleanup; 451 hdr_len = rskb->len; 452 ret = ops->fill_reply(rskb, req_info, reply_data); 453 if (ret < 0) 454 goto err_msg; 455 WARN_ONCE(rskb->len - hdr_len > reply_len, 456 "ethnl cmd %d: calculated reply length %d, but consumed %d\n", 457 cmd, reply_len, rskb->len - hdr_len); 458 if (ops->cleanup_data) 459 ops->cleanup_data(reply_data); 460 461 genlmsg_end(rskb, reply_payload); 462 netdev_put(req_info->dev, &req_info->dev_tracker); 463 kfree(reply_data); 464 kfree(req_info); 465 return genlmsg_reply(rskb, info); 466 467 err_msg: 468 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); 469 nlmsg_free(rskb); 470 err_cleanup: 471 if (ops->cleanup_data) 472 ops->cleanup_data(reply_data); 473 err_dev: 474 netdev_put(req_info->dev, &req_info->dev_tracker); 475 kfree(reply_data); 476 kfree(req_info); 477 return ret; 478 } 479 480 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, 481 const struct ethnl_dump_ctx *ctx, 482 const struct genl_info *info) 483 { 484 void *ehdr; 485 int ret; 486 487 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 488 ðtool_genl_family, NLM_F_MULTI, 489 ctx->ops->reply_cmd); 490 if (!ehdr) 491 return -EMSGSIZE; 492 493 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); 494 rtnl_lock(); 495 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); 496 rtnl_unlock(); 497 if (ret < 0) 498 goto out; 499 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); 500 if (ret < 0) 501 goto out; 502 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); 503 504 out: 505 if (ctx->ops->cleanup_data) 506 ctx->ops->cleanup_data(ctx->reply_data); 507 ctx->reply_data->dev = NULL; 508 if (ret < 0) 509 genlmsg_cancel(skb, ehdr); 510 else 511 genlmsg_end(skb, ehdr); 512 return ret; 513 } 514 515 /* Default ->dumpit() handler for GET requests. */ 516 static int ethnl_default_dumpit(struct sk_buff *skb, 517 struct netlink_callback *cb) 518 { 519 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 520 struct net *net = sock_net(skb->sk); 521 struct net_device *dev; 522 int ret = 0; 523 524 rcu_read_lock(); 525 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 526 dev_hold(dev); 527 rcu_read_unlock(); 528 529 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 530 531 rcu_read_lock(); 532 dev_put(dev); 533 534 if (ret < 0 && ret != -EOPNOTSUPP) { 535 if (likely(skb->len)) 536 ret = skb->len; 537 break; 538 } 539 ret = 0; 540 } 541 rcu_read_unlock(); 542 543 return ret; 544 } 545 546 /* generic ->start() handler for GET requests */ 547 static int ethnl_default_start(struct netlink_callback *cb) 548 { 549 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 550 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 551 struct ethnl_reply_data *reply_data; 552 const struct ethnl_request_ops *ops; 553 struct ethnl_req_info *req_info; 554 struct genlmsghdr *ghdr; 555 int ret; 556 557 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 558 559 ghdr = nlmsg_data(cb->nlh); 560 ops = ethnl_default_requests[ghdr->cmd]; 561 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 562 return -EOPNOTSUPP; 563 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 564 if (!req_info) 565 return -ENOMEM; 566 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 567 if (!reply_data) { 568 ret = -ENOMEM; 569 goto free_req_info; 570 } 571 572 ret = ethnl_default_parse(req_info, &info->info, ops, false); 573 if (req_info->dev) { 574 /* We ignore device specification in dump requests but as the 575 * same parser as for non-dump (doit) requests is used, it 576 * would take reference to the device if it finds one 577 */ 578 netdev_put(req_info->dev, &req_info->dev_tracker); 579 req_info->dev = NULL; 580 } 581 if (ret < 0) 582 goto free_reply_data; 583 584 ctx->ops = ops; 585 ctx->req_info = req_info; 586 ctx->reply_data = reply_data; 587 ctx->pos_ifindex = 0; 588 589 return 0; 590 591 free_reply_data: 592 kfree(reply_data); 593 free_req_info: 594 kfree(req_info); 595 596 return ret; 597 } 598 599 /* default ->done() handler for GET requests */ 600 static int ethnl_default_done(struct netlink_callback *cb) 601 { 602 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 603 604 kfree(ctx->reply_data); 605 kfree(ctx->req_info); 606 607 return 0; 608 } 609 610 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 611 { 612 const struct ethnl_request_ops *ops; 613 struct ethnl_req_info req_info = {}; 614 const u8 cmd = info->genlhdr->cmd; 615 int ret; 616 617 ops = ethnl_default_requests[cmd]; 618 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 619 return -EOPNOTSUPP; 620 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 621 return -EINVAL; 622 623 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr], 624 genl_info_net(info), info->extack, 625 true); 626 if (ret < 0) 627 return ret; 628 629 if (ops->set_validate) { 630 ret = ops->set_validate(&req_info, info); 631 /* 0 means nothing to do */ 632 if (ret <= 0) 633 goto out_dev; 634 } 635 636 rtnl_lock(); 637 ret = ethnl_ops_begin(req_info.dev); 638 if (ret < 0) 639 goto out_rtnl; 640 641 ret = ops->set(&req_info, info); 642 if (ret <= 0) 643 goto out_ops; 644 ethtool_notify(req_info.dev, ops->set_ntf_cmd, NULL); 645 646 ret = 0; 647 out_ops: 648 ethnl_ops_complete(req_info.dev); 649 out_rtnl: 650 rtnl_unlock(); 651 out_dev: 652 ethnl_parse_header_dev_put(&req_info); 653 return ret; 654 } 655 656 static const struct ethnl_request_ops * 657 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 658 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 659 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 660 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 661 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 662 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 663 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 664 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 665 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 666 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 667 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 668 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 669 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 670 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 671 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 672 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 673 }; 674 675 /* default notification handler */ 676 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 677 const void *data) 678 { 679 struct ethnl_reply_data *reply_data; 680 const struct ethnl_request_ops *ops; 681 struct ethnl_req_info *req_info; 682 struct genl_info info; 683 struct sk_buff *skb; 684 void *reply_payload; 685 int reply_len; 686 int ret; 687 688 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 689 690 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 691 !ethnl_default_notify_ops[cmd], 692 "unexpected notification type %u\n", cmd)) 693 return; 694 ops = ethnl_default_notify_ops[cmd]; 695 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 696 if (!req_info) 697 return; 698 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 699 if (!reply_data) { 700 kfree(req_info); 701 return; 702 } 703 704 req_info->dev = dev; 705 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 706 707 ethnl_init_reply_data(reply_data, ops, dev); 708 ret = ops->prepare_data(req_info, reply_data, &info); 709 if (ret < 0) 710 goto err_cleanup; 711 ret = ops->reply_size(req_info, reply_data); 712 if (ret < 0) 713 goto err_cleanup; 714 reply_len = ret + ethnl_reply_header_size(); 715 skb = genlmsg_new(reply_len, GFP_KERNEL); 716 if (!skb) 717 goto err_cleanup; 718 reply_payload = ethnl_bcastmsg_put(skb, cmd); 719 if (!reply_payload) 720 goto err_skb; 721 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 722 if (ret < 0) 723 goto err_msg; 724 ret = ops->fill_reply(skb, req_info, reply_data); 725 if (ret < 0) 726 goto err_msg; 727 if (ops->cleanup_data) 728 ops->cleanup_data(reply_data); 729 730 genlmsg_end(skb, reply_payload); 731 kfree(reply_data); 732 kfree(req_info); 733 ethnl_multicast(skb, dev); 734 return; 735 736 err_msg: 737 WARN_ONCE(ret == -EMSGSIZE, 738 "calculated message payload length (%d) not sufficient\n", 739 reply_len); 740 err_skb: 741 nlmsg_free(skb); 742 err_cleanup: 743 if (ops->cleanup_data) 744 ops->cleanup_data(reply_data); 745 kfree(reply_data); 746 kfree(req_info); 747 return; 748 } 749 750 /* notifications */ 751 752 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 753 const void *data); 754 755 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 756 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 757 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 758 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 759 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 760 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 761 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 762 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 763 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 764 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 765 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 766 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 767 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 768 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 769 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 770 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 771 }; 772 773 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) 774 { 775 if (unlikely(!ethnl_ok)) 776 return; 777 ASSERT_RTNL(); 778 779 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 780 ethnl_notify_handlers[cmd])) 781 ethnl_notify_handlers[cmd](dev, cmd, data); 782 else 783 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 784 cmd, netdev_name(dev)); 785 } 786 EXPORT_SYMBOL(ethtool_notify); 787 788 static void ethnl_notify_features(struct netdev_notifier_info *info) 789 { 790 struct net_device *dev = netdev_notifier_info_to_dev(info); 791 792 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); 793 } 794 795 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 796 void *ptr) 797 { 798 struct netdev_notifier_info *info = ptr; 799 struct netlink_ext_ack *extack; 800 struct net_device *dev; 801 802 dev = netdev_notifier_info_to_dev(info); 803 extack = netdev_notifier_info_to_extack(info); 804 805 switch (event) { 806 case NETDEV_FEAT_CHANGE: 807 ethnl_notify_features(ptr); 808 break; 809 case NETDEV_PRE_UP: 810 if (dev->ethtool->module_fw_flash_in_progress) { 811 NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware"); 812 return NOTIFY_BAD; 813 } 814 } 815 816 return NOTIFY_DONE; 817 } 818 819 static struct notifier_block ethnl_netdev_notifier = { 820 .notifier_call = ethnl_netdev_event, 821 }; 822 823 /* genetlink setup */ 824 825 static const struct genl_ops ethtool_genl_ops[] = { 826 { 827 .cmd = ETHTOOL_MSG_STRSET_GET, 828 .doit = ethnl_default_doit, 829 .start = ethnl_default_start, 830 .dumpit = ethnl_default_dumpit, 831 .done = ethnl_default_done, 832 .policy = ethnl_strset_get_policy, 833 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 834 }, 835 { 836 .cmd = ETHTOOL_MSG_LINKINFO_GET, 837 .doit = ethnl_default_doit, 838 .start = ethnl_default_start, 839 .dumpit = ethnl_default_dumpit, 840 .done = ethnl_default_done, 841 .policy = ethnl_linkinfo_get_policy, 842 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 843 }, 844 { 845 .cmd = ETHTOOL_MSG_LINKINFO_SET, 846 .flags = GENL_UNS_ADMIN_PERM, 847 .doit = ethnl_default_set_doit, 848 .policy = ethnl_linkinfo_set_policy, 849 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 850 }, 851 { 852 .cmd = ETHTOOL_MSG_LINKMODES_GET, 853 .doit = ethnl_default_doit, 854 .start = ethnl_default_start, 855 .dumpit = ethnl_default_dumpit, 856 .done = ethnl_default_done, 857 .policy = ethnl_linkmodes_get_policy, 858 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 859 }, 860 { 861 .cmd = ETHTOOL_MSG_LINKMODES_SET, 862 .flags = GENL_UNS_ADMIN_PERM, 863 .doit = ethnl_default_set_doit, 864 .policy = ethnl_linkmodes_set_policy, 865 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 866 }, 867 { 868 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 869 .doit = ethnl_default_doit, 870 .start = ethnl_default_start, 871 .dumpit = ethnl_default_dumpit, 872 .done = ethnl_default_done, 873 .policy = ethnl_linkstate_get_policy, 874 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 875 }, 876 { 877 .cmd = ETHTOOL_MSG_DEBUG_GET, 878 .doit = ethnl_default_doit, 879 .start = ethnl_default_start, 880 .dumpit = ethnl_default_dumpit, 881 .done = ethnl_default_done, 882 .policy = ethnl_debug_get_policy, 883 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 884 }, 885 { 886 .cmd = ETHTOOL_MSG_DEBUG_SET, 887 .flags = GENL_UNS_ADMIN_PERM, 888 .doit = ethnl_default_set_doit, 889 .policy = ethnl_debug_set_policy, 890 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 891 }, 892 { 893 .cmd = ETHTOOL_MSG_WOL_GET, 894 .flags = GENL_UNS_ADMIN_PERM, 895 .doit = ethnl_default_doit, 896 .start = ethnl_default_start, 897 .dumpit = ethnl_default_dumpit, 898 .done = ethnl_default_done, 899 .policy = ethnl_wol_get_policy, 900 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 901 }, 902 { 903 .cmd = ETHTOOL_MSG_WOL_SET, 904 .flags = GENL_UNS_ADMIN_PERM, 905 .doit = ethnl_default_set_doit, 906 .policy = ethnl_wol_set_policy, 907 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 908 }, 909 { 910 .cmd = ETHTOOL_MSG_FEATURES_GET, 911 .doit = ethnl_default_doit, 912 .start = ethnl_default_start, 913 .dumpit = ethnl_default_dumpit, 914 .done = ethnl_default_done, 915 .policy = ethnl_features_get_policy, 916 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 917 }, 918 { 919 .cmd = ETHTOOL_MSG_FEATURES_SET, 920 .flags = GENL_UNS_ADMIN_PERM, 921 .doit = ethnl_set_features, 922 .policy = ethnl_features_set_policy, 923 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 924 }, 925 { 926 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 927 .doit = ethnl_default_doit, 928 .start = ethnl_default_start, 929 .dumpit = ethnl_default_dumpit, 930 .done = ethnl_default_done, 931 .policy = ethnl_privflags_get_policy, 932 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 933 }, 934 { 935 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 936 .flags = GENL_UNS_ADMIN_PERM, 937 .doit = ethnl_default_set_doit, 938 .policy = ethnl_privflags_set_policy, 939 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 940 }, 941 { 942 .cmd = ETHTOOL_MSG_RINGS_GET, 943 .doit = ethnl_default_doit, 944 .start = ethnl_default_start, 945 .dumpit = ethnl_default_dumpit, 946 .done = ethnl_default_done, 947 .policy = ethnl_rings_get_policy, 948 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 949 }, 950 { 951 .cmd = ETHTOOL_MSG_RINGS_SET, 952 .flags = GENL_UNS_ADMIN_PERM, 953 .doit = ethnl_default_set_doit, 954 .policy = ethnl_rings_set_policy, 955 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 956 }, 957 { 958 .cmd = ETHTOOL_MSG_CHANNELS_GET, 959 .doit = ethnl_default_doit, 960 .start = ethnl_default_start, 961 .dumpit = ethnl_default_dumpit, 962 .done = ethnl_default_done, 963 .policy = ethnl_channels_get_policy, 964 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 965 }, 966 { 967 .cmd = ETHTOOL_MSG_CHANNELS_SET, 968 .flags = GENL_UNS_ADMIN_PERM, 969 .doit = ethnl_default_set_doit, 970 .policy = ethnl_channels_set_policy, 971 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 972 }, 973 { 974 .cmd = ETHTOOL_MSG_COALESCE_GET, 975 .doit = ethnl_default_doit, 976 .start = ethnl_default_start, 977 .dumpit = ethnl_default_dumpit, 978 .done = ethnl_default_done, 979 .policy = ethnl_coalesce_get_policy, 980 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 981 }, 982 { 983 .cmd = ETHTOOL_MSG_COALESCE_SET, 984 .flags = GENL_UNS_ADMIN_PERM, 985 .doit = ethnl_default_set_doit, 986 .policy = ethnl_coalesce_set_policy, 987 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 988 }, 989 { 990 .cmd = ETHTOOL_MSG_PAUSE_GET, 991 .doit = ethnl_default_doit, 992 .start = ethnl_default_start, 993 .dumpit = ethnl_default_dumpit, 994 .done = ethnl_default_done, 995 .policy = ethnl_pause_get_policy, 996 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 997 }, 998 { 999 .cmd = ETHTOOL_MSG_PAUSE_SET, 1000 .flags = GENL_UNS_ADMIN_PERM, 1001 .doit = ethnl_default_set_doit, 1002 .policy = ethnl_pause_set_policy, 1003 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 1004 }, 1005 { 1006 .cmd = ETHTOOL_MSG_EEE_GET, 1007 .doit = ethnl_default_doit, 1008 .start = ethnl_default_start, 1009 .dumpit = ethnl_default_dumpit, 1010 .done = ethnl_default_done, 1011 .policy = ethnl_eee_get_policy, 1012 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 1013 }, 1014 { 1015 .cmd = ETHTOOL_MSG_EEE_SET, 1016 .flags = GENL_UNS_ADMIN_PERM, 1017 .doit = ethnl_default_set_doit, 1018 .policy = ethnl_eee_set_policy, 1019 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 1020 }, 1021 { 1022 .cmd = ETHTOOL_MSG_TSINFO_GET, 1023 .doit = ethnl_default_doit, 1024 .start = ethnl_default_start, 1025 .dumpit = ethnl_default_dumpit, 1026 .done = ethnl_default_done, 1027 .policy = ethnl_tsinfo_get_policy, 1028 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 1029 }, 1030 { 1031 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 1032 .flags = GENL_UNS_ADMIN_PERM, 1033 .doit = ethnl_act_cable_test, 1034 .policy = ethnl_cable_test_act_policy, 1035 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 1036 }, 1037 { 1038 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 1039 .flags = GENL_UNS_ADMIN_PERM, 1040 .doit = ethnl_act_cable_test_tdr, 1041 .policy = ethnl_cable_test_tdr_act_policy, 1042 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 1043 }, 1044 { 1045 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1046 .doit = ethnl_tunnel_info_doit, 1047 .start = ethnl_tunnel_info_start, 1048 .dumpit = ethnl_tunnel_info_dumpit, 1049 .policy = ethnl_tunnel_info_get_policy, 1050 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1051 }, 1052 { 1053 .cmd = ETHTOOL_MSG_FEC_GET, 1054 .doit = ethnl_default_doit, 1055 .start = ethnl_default_start, 1056 .dumpit = ethnl_default_dumpit, 1057 .done = ethnl_default_done, 1058 .policy = ethnl_fec_get_policy, 1059 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1060 }, 1061 { 1062 .cmd = ETHTOOL_MSG_FEC_SET, 1063 .flags = GENL_UNS_ADMIN_PERM, 1064 .doit = ethnl_default_set_doit, 1065 .policy = ethnl_fec_set_policy, 1066 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1067 }, 1068 { 1069 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1070 .flags = GENL_UNS_ADMIN_PERM, 1071 .doit = ethnl_default_doit, 1072 .start = ethnl_default_start, 1073 .dumpit = ethnl_default_dumpit, 1074 .done = ethnl_default_done, 1075 .policy = ethnl_module_eeprom_get_policy, 1076 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1077 }, 1078 { 1079 .cmd = ETHTOOL_MSG_STATS_GET, 1080 .doit = ethnl_default_doit, 1081 .start = ethnl_default_start, 1082 .dumpit = ethnl_default_dumpit, 1083 .done = ethnl_default_done, 1084 .policy = ethnl_stats_get_policy, 1085 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1086 }, 1087 { 1088 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1089 .doit = ethnl_default_doit, 1090 .start = ethnl_default_start, 1091 .dumpit = ethnl_default_dumpit, 1092 .done = ethnl_default_done, 1093 .policy = ethnl_phc_vclocks_get_policy, 1094 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1095 }, 1096 { 1097 .cmd = ETHTOOL_MSG_MODULE_GET, 1098 .doit = ethnl_default_doit, 1099 .start = ethnl_default_start, 1100 .dumpit = ethnl_default_dumpit, 1101 .done = ethnl_default_done, 1102 .policy = ethnl_module_get_policy, 1103 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1104 }, 1105 { 1106 .cmd = ETHTOOL_MSG_MODULE_SET, 1107 .flags = GENL_UNS_ADMIN_PERM, 1108 .doit = ethnl_default_set_doit, 1109 .policy = ethnl_module_set_policy, 1110 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1111 }, 1112 { 1113 .cmd = ETHTOOL_MSG_PSE_GET, 1114 .doit = ethnl_default_doit, 1115 .start = ethnl_default_start, 1116 .dumpit = ethnl_default_dumpit, 1117 .done = ethnl_default_done, 1118 .policy = ethnl_pse_get_policy, 1119 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1120 }, 1121 { 1122 .cmd = ETHTOOL_MSG_PSE_SET, 1123 .flags = GENL_UNS_ADMIN_PERM, 1124 .doit = ethnl_default_set_doit, 1125 .policy = ethnl_pse_set_policy, 1126 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1127 }, 1128 { 1129 .cmd = ETHTOOL_MSG_RSS_GET, 1130 .doit = ethnl_default_doit, 1131 .policy = ethnl_rss_get_policy, 1132 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1133 }, 1134 { 1135 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1136 .doit = ethnl_default_doit, 1137 .start = ethnl_default_start, 1138 .dumpit = ethnl_default_dumpit, 1139 .done = ethnl_default_done, 1140 .policy = ethnl_plca_get_cfg_policy, 1141 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1142 }, 1143 { 1144 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1145 .flags = GENL_UNS_ADMIN_PERM, 1146 .doit = ethnl_default_set_doit, 1147 .policy = ethnl_plca_set_cfg_policy, 1148 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1149 }, 1150 { 1151 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1152 .doit = ethnl_default_doit, 1153 .start = ethnl_default_start, 1154 .dumpit = ethnl_default_dumpit, 1155 .done = ethnl_default_done, 1156 .policy = ethnl_plca_get_status_policy, 1157 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1158 }, 1159 { 1160 .cmd = ETHTOOL_MSG_MM_GET, 1161 .doit = ethnl_default_doit, 1162 .start = ethnl_default_start, 1163 .dumpit = ethnl_default_dumpit, 1164 .done = ethnl_default_done, 1165 .policy = ethnl_mm_get_policy, 1166 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1167 }, 1168 { 1169 .cmd = ETHTOOL_MSG_MM_SET, 1170 .flags = GENL_UNS_ADMIN_PERM, 1171 .doit = ethnl_default_set_doit, 1172 .policy = ethnl_mm_set_policy, 1173 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1174 }, 1175 { 1176 .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT, 1177 .flags = GENL_UNS_ADMIN_PERM, 1178 .doit = ethnl_act_module_fw_flash, 1179 .policy = ethnl_module_fw_flash_act_policy, 1180 .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1, 1181 }, 1182 }; 1183 1184 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1185 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1186 }; 1187 1188 static struct genl_family ethtool_genl_family __ro_after_init = { 1189 .name = ETHTOOL_GENL_NAME, 1190 .version = ETHTOOL_GENL_VERSION, 1191 .netnsok = true, 1192 .parallel_ops = true, 1193 .ops = ethtool_genl_ops, 1194 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1195 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1196 .mcgrps = ethtool_nl_mcgrps, 1197 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1198 .sock_priv_size = sizeof(struct ethnl_sock_priv), 1199 .sock_priv_destroy = ethnl_sock_priv_destroy, 1200 }; 1201 1202 /* module setup */ 1203 1204 static int __init ethnl_init(void) 1205 { 1206 int ret; 1207 1208 ret = genl_register_family(ðtool_genl_family); 1209 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1210 return ret; 1211 ethnl_ok = true; 1212 1213 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1214 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1215 return ret; 1216 } 1217 1218 subsys_initcall(ethnl_init); 1219