1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <net/netdev_lock.h> 4 #include <net/netdev_queues.h> 5 #include <net/sock.h> 6 #include <linux/ethtool_netlink.h> 7 #include <linux/phy_link_topology.h> 8 #include <linux/pm_runtime.h> 9 10 #include "common.h" 11 #include "module_fw.h" 12 #include "netlink.h" 13 14 static struct genl_family ethtool_genl_family; 15 16 static bool ethnl_ok __read_mostly; 17 18 /* Serializes broadcast notification sequence allocation with the multicast 19 * send, so that userspace observes nlmsg_seq monotonic in receive order 20 * regardless of which lock the caller holds (rtnl or instance lock). 21 */ 22 static DEFINE_MUTEX(ethnl_bcast_lock); 23 static u32 ethnl_bcast_seq; 24 25 #define ETHTOOL_FLAGS_BASIC (ETHTOOL_FLAG_COMPACT_BITSETS | \ 26 ETHTOOL_FLAG_OMIT_REPLY) 27 #define ETHTOOL_FLAGS_STATS (ETHTOOL_FLAGS_BASIC | ETHTOOL_FLAG_STATS) 28 29 const struct nla_policy ethnl_header_policy[] = { 30 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 31 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 32 .len = ALTIFNAMSIZ - 1 }, 33 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 34 ETHTOOL_FLAGS_BASIC), 35 }; 36 37 const struct nla_policy ethnl_header_policy_stats[] = { 38 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 39 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 40 .len = ALTIFNAMSIZ - 1 }, 41 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 42 ETHTOOL_FLAGS_STATS), 43 }; 44 45 const struct nla_policy ethnl_header_policy_phy[] = { 46 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 47 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 48 .len = ALTIFNAMSIZ - 1 }, 49 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 50 ETHTOOL_FLAGS_BASIC), 51 [ETHTOOL_A_HEADER_PHY_INDEX] = NLA_POLICY_MIN(NLA_U32, 1), 52 }; 53 54 const struct nla_policy ethnl_header_policy_phy_stats[] = { 55 [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, 56 [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, 57 .len = ALTIFNAMSIZ - 1 }, 58 [ETHTOOL_A_HEADER_FLAGS] = NLA_POLICY_MASK(NLA_U32, 59 ETHTOOL_FLAGS_STATS), 60 [ETHTOOL_A_HEADER_PHY_INDEX] = NLA_POLICY_MIN(NLA_U32, 1), 61 }; 62 63 int ethnl_sock_priv_set(struct sk_buff *skb, struct net *net, u32 portid, 64 enum ethnl_sock_type type) 65 { 66 struct ethnl_sock_priv *sk_priv; 67 68 sk_priv = genl_sk_priv_get(ðtool_genl_family, NETLINK_CB(skb).sk); 69 if (IS_ERR(sk_priv)) 70 return PTR_ERR(sk_priv); 71 72 sk_priv->net = net; 73 sk_priv->portid = portid; 74 sk_priv->type = type; 75 76 return 0; 77 } 78 79 static void ethnl_sock_priv_destroy(void *priv) 80 { 81 struct ethnl_sock_priv *sk_priv = priv; 82 83 switch (sk_priv->type) { 84 case ETHTOOL_SOCK_TYPE_MODULE_FW_FLASH: 85 ethnl_module_fw_flash_sock_destroy(sk_priv); 86 break; 87 default: 88 break; 89 } 90 } 91 92 int ethnl_ops_begin(struct net_device *dev) 93 { 94 int ret; 95 96 if (!dev) 97 return -ENODEV; 98 99 if (dev->dev.parent) 100 pm_runtime_get_sync(dev->dev.parent); 101 102 netdev_assert_locked_ops_compat(dev); 103 104 if (!netif_device_present(dev) || 105 dev->reg_state >= NETREG_UNREGISTERING) { 106 ret = -ENODEV; 107 goto err; 108 } 109 110 if (dev->ethtool_ops->begin) { 111 ret = dev->ethtool_ops->begin(dev); 112 if (ret) 113 goto err; 114 } 115 116 return 0; 117 err: 118 if (dev->dev.parent) 119 pm_runtime_put(dev->dev.parent); 120 121 return ret; 122 } 123 124 void ethnl_ops_complete(struct net_device *dev) 125 { 126 if (dev->ethtool_ops->complete) 127 dev->ethtool_ops->complete(dev); 128 129 if (dev->dev.parent) 130 pm_runtime_put(dev->dev.parent); 131 } 132 133 /** 134 * ethnl_parse_header_dev_get() - parse request header 135 * @req_info: structure to put results into 136 * @header: nest attribute with request header 137 * @net: request netns 138 * @extack: netlink extack for error reporting 139 * @require_dev: fail if no device identified in header 140 * 141 * Parse request header in nested attribute @nest and puts results into 142 * the structure pointed to by @req_info. Extack from @info is used for error 143 * reporting. If req_info->dev is not null on return, reference to it has 144 * been taken. If error is returned, *req_info is null initialized and no 145 * reference is held. 146 * 147 * Return: 0 on success or negative error code 148 */ 149 int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, 150 const struct nlattr *header, struct net *net, 151 struct netlink_ext_ack *extack, bool require_dev) 152 { 153 struct nlattr *tb[ARRAY_SIZE(ethnl_header_policy_phy)]; 154 const struct nlattr *devname_attr; 155 struct net_device *dev = NULL; 156 u32 flags = 0; 157 int ret; 158 159 if (!header) { 160 if (!require_dev) 161 return 0; 162 NL_SET_ERR_MSG(extack, "request header missing"); 163 return -EINVAL; 164 } 165 /* No validation here, command policy should have a nested policy set 166 * for the header, therefore validation should have already been done. 167 */ 168 ret = nla_parse_nested(tb, ARRAY_SIZE(ethnl_header_policy_phy) - 1, header, 169 NULL, extack); 170 if (ret < 0) 171 return ret; 172 if (tb[ETHTOOL_A_HEADER_FLAGS]) 173 flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); 174 175 devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; 176 if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { 177 u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); 178 179 dev = netdev_get_by_index(net, ifindex, &req_info->dev_tracker, 180 GFP_KERNEL); 181 if (!dev) { 182 NL_SET_ERR_MSG_ATTR(extack, 183 tb[ETHTOOL_A_HEADER_DEV_INDEX], 184 "no device matches ifindex"); 185 return -ENODEV; 186 } 187 /* if both ifindex and ifname are passed, they must match */ 188 if (devname_attr && 189 strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { 190 netdev_put(dev, &req_info->dev_tracker); 191 NL_SET_ERR_MSG_ATTR(extack, header, 192 "ifindex and name do not match"); 193 return -ENODEV; 194 } 195 } else if (devname_attr) { 196 dev = netdev_get_by_name(net, nla_data(devname_attr), 197 &req_info->dev_tracker, GFP_KERNEL); 198 if (!dev) { 199 NL_SET_ERR_MSG_ATTR(extack, devname_attr, 200 "no device matches name"); 201 return -ENODEV; 202 } 203 } else if (require_dev) { 204 NL_SET_ERR_MSG_ATTR(extack, header, 205 "neither ifindex nor name specified"); 206 return -EINVAL; 207 } 208 209 if (tb[ETHTOOL_A_HEADER_PHY_INDEX]) { 210 if (dev) { 211 req_info->phy_index = nla_get_u32(tb[ETHTOOL_A_HEADER_PHY_INDEX]); 212 } else { 213 NL_SET_ERR_MSG_ATTR(extack, header, 214 "phy_index set without a netdev"); 215 return -EINVAL; 216 } 217 } 218 219 req_info->dev = dev; 220 req_info->flags = flags; 221 return 0; 222 } 223 224 struct phy_device *ethnl_req_get_phydev(const struct ethnl_req_info *req_info, 225 struct nlattr **tb, unsigned int header, 226 struct netlink_ext_ack *extack) 227 { 228 struct phy_device *phydev; 229 230 if (!req_info->dev) 231 return NULL; 232 233 /* If there is no PHY in sight there's no need for assert locking */ 234 if (!phy_link_topo_empty(req_info->dev)) 235 ASSERT_RTNL(); 236 237 if (!req_info->phy_index) 238 return req_info->dev->phydev; 239 240 phydev = phy_link_topo_get_phy(req_info->dev, req_info->phy_index); 241 if (!phydev && tb) { 242 NL_SET_ERR_MSG_ATTR(extack, tb[header], 243 "no phy matching phyindex"); 244 return ERR_PTR(-ENODEV); 245 } 246 247 return phydev; 248 } 249 250 /** 251 * ethnl_fill_reply_header() - Put common header into a reply message 252 * @skb: skb with the message 253 * @dev: network device to describe in header 254 * @attrtype: attribute type to use for the nest 255 * 256 * Create a nested attribute with attributes describing given network device. 257 * 258 * Return: 0 on success, error value (-EMSGSIZE only) on error 259 */ 260 int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, 261 u16 attrtype) 262 { 263 struct nlattr *nest; 264 265 if (!dev) 266 return 0; 267 nest = nla_nest_start(skb, attrtype); 268 if (!nest) 269 return -EMSGSIZE; 270 271 if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || 272 nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) 273 goto nla_put_failure; 274 /* If more attributes are put into reply header, ethnl_header_size() 275 * must be updated to account for them. 276 */ 277 278 nla_nest_end(skb, nest); 279 return 0; 280 281 nla_put_failure: 282 nla_nest_cancel(skb, nest); 283 return -EMSGSIZE; 284 } 285 286 /** 287 * ethnl_reply_init() - Create skb for a reply and fill device identification 288 * @payload: payload length (without netlink and genetlink header) 289 * @dev: device the reply is about (may be null) 290 * @cmd: ETHTOOL_MSG_* message type for reply 291 * @hdr_attrtype: attribute type for common header 292 * @info: genetlink info of the received packet we respond to 293 * @ehdrp: place to store payload pointer returned by genlmsg_new() 294 * 295 * Return: pointer to allocated skb on success, NULL on error 296 */ 297 struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, 298 u16 hdr_attrtype, struct genl_info *info, 299 void **ehdrp) 300 { 301 struct sk_buff *skb; 302 303 skb = genlmsg_new(payload, GFP_KERNEL); 304 if (!skb) 305 goto err; 306 *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); 307 if (!*ehdrp) 308 goto err_free; 309 310 if (dev) { 311 int ret; 312 313 ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); 314 if (ret < 0) 315 goto err_free; 316 } 317 return skb; 318 319 err_free: 320 nlmsg_free(skb); 321 err: 322 if (info) 323 GENL_SET_ERR_MSG(info, "failed to setup reply message"); 324 return NULL; 325 } 326 327 void *ethnl_dump_put(struct sk_buff *skb, struct netlink_callback *cb, u8 cmd) 328 { 329 return genlmsg_put(skb, NETLINK_CB(cb->skb).portid, cb->nlh->nlmsg_seq, 330 ðtool_genl_family, 0, cmd); 331 } 332 333 void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) 334 { 335 return genlmsg_put(skb, 0, 0, ðtool_genl_family, 0, cmd); 336 } 337 338 void *ethnl_unicast_put(struct sk_buff *skb, u32 portid, u32 seq, u8 cmd) 339 { 340 return genlmsg_put(skb, portid, seq, ðtool_genl_family, 0, cmd); 341 } 342 343 int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) 344 { 345 struct nlmsghdr *nlh = nlmsg_hdr(skb); 346 int ret; 347 348 mutex_lock(ðnl_bcast_lock); 349 nlh->nlmsg_seq = ++ethnl_bcast_seq; 350 ret = genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, 351 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); 352 mutex_unlock(ðnl_bcast_lock); 353 return ret; 354 } 355 356 /* GET request helpers */ 357 358 /** 359 * struct ethnl_dump_ctx - context structure for generic dumpit() callback 360 * @ops: request ops of currently processed message type 361 * @req_info: parsed request header of processed request 362 * @reply_data: data needed to compose the reply 363 * @pos_ifindex: saved iteration position - ifindex 364 * 365 * These parameters are kept in struct netlink_callback as context preserved 366 * between iterations. They are initialized by ethnl_default_start() and used 367 * in ethnl_default_dumpit() and ethnl_default_done(). 368 */ 369 struct ethnl_dump_ctx { 370 const struct ethnl_request_ops *ops; 371 struct ethnl_req_info *req_info; 372 struct ethnl_reply_data *reply_data; 373 unsigned long pos_ifindex; 374 }; 375 376 /** 377 * struct ethnl_perphy_dump_ctx - context for dumpit() PHY-aware callbacks 378 * @ethnl_ctx: generic ethnl context 379 * @ifindex: For Filtered DUMP requests, the ifindex of the targeted netdev 380 * @pos_phyindex: iterator position for multi-msg DUMP 381 */ 382 struct ethnl_perphy_dump_ctx { 383 struct ethnl_dump_ctx ethnl_ctx; 384 unsigned int ifindex; 385 unsigned long pos_phyindex; 386 }; 387 388 static const struct ethnl_request_ops * 389 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { 390 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, 391 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, 392 [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops, 393 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, 394 [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops, 395 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, 396 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, 397 [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops, 398 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, 399 [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops, 400 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, 401 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, 402 [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops, 403 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, 404 [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops, 405 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, 406 [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops, 407 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, 408 [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops, 409 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, 410 [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops, 411 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, 412 [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops, 413 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops, 414 [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops, 415 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, 416 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops, 417 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops, 418 [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops, 419 [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops, 420 [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops, 421 [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops, 422 [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops, 423 [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops, 424 [ETHTOOL_MSG_RSS_SET] = ðnl_rss_request_ops, 425 [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops, 426 [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops, 427 [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops, 428 [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops, 429 [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops, 430 [ETHTOOL_MSG_TSCONFIG_GET] = ðnl_tsconfig_request_ops, 431 [ETHTOOL_MSG_TSCONFIG_SET] = ðnl_tsconfig_request_ops, 432 [ETHTOOL_MSG_PHY_GET] = ðnl_phy_request_ops, 433 [ETHTOOL_MSG_MSE_GET] = ðnl_mse_request_ops, 434 }; 435 436 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) 437 { 438 return (struct ethnl_dump_ctx *)cb->ctx; 439 } 440 441 static struct ethnl_perphy_dump_ctx * 442 ethnl_perphy_dump_context(struct netlink_callback *cb) 443 { 444 return (struct ethnl_perphy_dump_ctx *)cb->ctx; 445 } 446 447 /** 448 * ethnl_default_parse() - Parse request message 449 * @req_info: pointer to structure to put data into 450 * @info: genl_info from the request 451 * @request_ops: struct request_ops for request type 452 * @require_dev: fail if no device identified in header 453 * 454 * Parse universal request header and call request specific ->parse_request() 455 * callback (if defined) to parse the rest of the message. 456 * 457 * Return: 0 on success or negative error code 458 */ 459 static int ethnl_default_parse(struct ethnl_req_info *req_info, 460 const struct genl_info *info, 461 const struct ethnl_request_ops *request_ops, 462 bool require_dev) 463 { 464 struct nlattr **tb = info->attrs; 465 int ret; 466 467 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], 468 genl_info_net(info), info->extack, 469 require_dev); 470 if (ret < 0) 471 return ret; 472 473 if (request_ops->parse_request) { 474 ret = request_ops->parse_request(req_info, info, tb, 475 info->extack); 476 if (ret < 0) 477 goto err_dev; 478 } 479 480 return 0; 481 482 err_dev: 483 netdev_put(req_info->dev, &req_info->dev_tracker); 484 req_info->dev = NULL; 485 return ret; 486 } 487 488 /** 489 * ethnl_init_reply_data() - Initialize reply data for GET request 490 * @reply_data: pointer to embedded struct ethnl_reply_data 491 * @ops: instance of struct ethnl_request_ops describing the layout 492 * @dev: network device to initialize the reply for 493 * 494 * Fills the reply data part with zeros and sets the dev member. Must be called 495 * before calling the ->fill_reply() callback (for each iteration when handling 496 * dump requests). 497 */ 498 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, 499 const struct ethnl_request_ops *ops, 500 struct net_device *dev) 501 { 502 memset(reply_data, 0, ops->reply_data_size); 503 reply_data->dev = dev; 504 } 505 506 /* default ->doit() handler for GET type requests */ 507 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) 508 { 509 struct ethnl_reply_data *reply_data = NULL; 510 struct ethnl_req_info *req_info = NULL; 511 const u8 cmd = info->genlhdr->cmd; 512 const struct ethnl_request_ops *ops; 513 bool need_rtnl = false; 514 int hdr_len, reply_len; 515 struct sk_buff *rskb; 516 void *reply_payload; 517 int ret; 518 519 ops = ethnl_default_requests[cmd]; 520 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 521 return -EOPNOTSUPP; 522 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 523 return -EINVAL; 524 525 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 526 if (!req_info) 527 return -ENOMEM; 528 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 529 if (!reply_data) { 530 kfree(req_info); 531 return -ENOMEM; 532 } 533 534 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); 535 if (ret < 0) 536 goto err_free; 537 ethnl_init_reply_data(reply_data, ops, req_info->dev); 538 539 if (req_info->dev) { 540 need_rtnl = !netdev_need_ops_lock(req_info->dev) || 541 ethtool_nl_msg_needs_rtnl(req_info->dev, cmd); 542 if (need_rtnl) 543 rtnl_lock(); 544 netdev_lock_ops(req_info->dev); 545 } 546 ret = ops->prepare_data(req_info, reply_data, info); 547 if (req_info->dev) { 548 netdev_unlock_ops(req_info->dev); 549 if (need_rtnl) 550 rtnl_unlock(); 551 } 552 if (ret < 0) 553 goto err_dev; 554 ret = ops->reply_size(req_info, reply_data); 555 if (ret < 0) 556 goto err_cleanup; 557 reply_len = ret; 558 ret = -ENOMEM; 559 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), 560 req_info->dev, ops->reply_cmd, 561 ops->hdr_attr, info, &reply_payload); 562 if (!rskb) 563 goto err_cleanup; 564 hdr_len = rskb->len; 565 ret = ops->fill_reply(rskb, req_info, reply_data); 566 if (ret < 0) 567 goto err_msg; 568 WARN_ONCE(rskb->len - hdr_len > reply_len, 569 "ethnl cmd %d: calculated reply length %d, but consumed %d\n", 570 cmd, reply_len, rskb->len - hdr_len); 571 if (ops->cleanup_data) 572 ops->cleanup_data(reply_data); 573 574 genlmsg_end(rskb, reply_payload); 575 netdev_put(req_info->dev, &req_info->dev_tracker); 576 kfree(reply_data); 577 kfree(req_info); 578 return genlmsg_reply(rskb, info); 579 580 err_msg: 581 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); 582 nlmsg_free(rskb); 583 err_cleanup: 584 if (ops->cleanup_data) 585 ops->cleanup_data(reply_data); 586 err_dev: 587 netdev_put(req_info->dev, &req_info->dev_tracker); 588 err_free: 589 kfree(reply_data); 590 kfree(req_info); 591 return ret; 592 } 593 594 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, 595 const struct ethnl_dump_ctx *ctx, 596 const struct genl_info *info) 597 { 598 bool need_rtnl; 599 void *ehdr; 600 int ret; 601 602 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 603 ðtool_genl_family, NLM_F_MULTI, 604 ctx->ops->reply_cmd); 605 if (!ehdr) 606 return -EMSGSIZE; 607 608 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); 609 need_rtnl = !netdev_need_ops_lock(dev) || 610 ethtool_nl_msg_needs_rtnl(dev, ctx->ops->request_cmd); 611 if (need_rtnl) 612 rtnl_lock(); 613 netdev_lock_ops(dev); 614 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); 615 netdev_unlock_ops(dev); 616 if (need_rtnl) 617 rtnl_unlock(); 618 if (ret < 0) 619 goto out_cancel; 620 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); 621 if (ret < 0) 622 goto out; 623 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); 624 625 out: 626 if (ctx->ops->cleanup_data) 627 ctx->ops->cleanup_data(ctx->reply_data); 628 out_cancel: 629 ctx->reply_data->dev = NULL; 630 if (ret < 0) 631 genlmsg_cancel(skb, ehdr); 632 else 633 genlmsg_end(skb, ehdr); 634 return ret; 635 } 636 637 /* Default ->dumpit() handler for GET requests. */ 638 static int ethnl_default_dumpit(struct sk_buff *skb, 639 struct netlink_callback *cb) 640 { 641 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 642 struct net *net = sock_net(skb->sk); 643 netdevice_tracker dev_tracker; 644 struct net_device *dev; 645 int ret = 0; 646 647 rcu_read_lock(); 648 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 649 netdev_hold(dev, &dev_tracker, GFP_ATOMIC); 650 rcu_read_unlock(); 651 652 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 653 654 rcu_read_lock(); 655 netdev_put(dev, &dev_tracker); 656 657 if (ret < 0 && ret != -EOPNOTSUPP) { 658 if (likely(skb->len)) 659 ret = skb->len; 660 break; 661 } 662 ret = 0; 663 } 664 rcu_read_unlock(); 665 666 return ret; 667 } 668 669 /* generic ->start() handler for GET requests */ 670 static int ethnl_default_start(struct netlink_callback *cb) 671 { 672 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 673 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 674 struct ethnl_reply_data *reply_data; 675 const struct ethnl_request_ops *ops; 676 struct ethnl_req_info *req_info; 677 struct genlmsghdr *ghdr; 678 int ret; 679 680 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 681 682 ghdr = nlmsg_data(cb->nlh); 683 ops = ethnl_default_requests[ghdr->cmd]; 684 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 685 return -EOPNOTSUPP; 686 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 687 if (!req_info) 688 return -ENOMEM; 689 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 690 if (!reply_data) { 691 ret = -ENOMEM; 692 goto free_req_info; 693 } 694 695 ret = ethnl_default_parse(req_info, &info->info, ops, false); 696 if (ret < 0) 697 goto free_reply_data; 698 if (req_info->dev) { 699 /* We ignore device specification in dump requests but as the 700 * same parser as for non-dump (doit) requests is used, it 701 * would take reference to the device if it finds one 702 */ 703 netdev_put(req_info->dev, &req_info->dev_tracker); 704 req_info->dev = NULL; 705 } 706 707 ctx->ops = ops; 708 ctx->req_info = req_info; 709 ctx->reply_data = reply_data; 710 ctx->pos_ifindex = 0; 711 712 return 0; 713 714 free_reply_data: 715 kfree(reply_data); 716 free_req_info: 717 kfree(req_info); 718 719 return ret; 720 } 721 722 /* per-PHY ->start() handler for GET requests */ 723 static int ethnl_perphy_start(struct netlink_callback *cb) 724 { 725 struct ethnl_perphy_dump_ctx *phy_ctx = ethnl_perphy_dump_context(cb); 726 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 727 struct ethnl_dump_ctx *ctx = &phy_ctx->ethnl_ctx; 728 struct ethnl_reply_data *reply_data; 729 const struct ethnl_request_ops *ops; 730 struct ethnl_req_info *req_info; 731 struct genlmsghdr *ghdr; 732 int ret; 733 734 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 735 736 ghdr = nlmsg_data(cb->nlh); 737 ops = ethnl_default_requests[ghdr->cmd]; 738 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 739 return -EOPNOTSUPP; 740 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 741 if (!req_info) 742 return -ENOMEM; 743 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 744 if (!reply_data) { 745 ret = -ENOMEM; 746 goto free_req_info; 747 } 748 749 /* Unlike per-dev dump, don't ignore dev. The dump handler 750 * will notice it and dump PHYs from given dev. We only keep track of 751 * the dev's ifindex, .dumpit() will grab and release the netdev itself. 752 */ 753 ret = ethnl_default_parse(req_info, &info->info, ops, false); 754 if (ret < 0) 755 goto free_reply_data; 756 if (req_info->dev) { 757 phy_ctx->ifindex = req_info->dev->ifindex; 758 netdev_put(req_info->dev, &req_info->dev_tracker); 759 req_info->dev = NULL; 760 } 761 762 ctx->ops = ops; 763 ctx->req_info = req_info; 764 ctx->reply_data = reply_data; 765 ctx->pos_ifindex = 0; 766 767 return 0; 768 769 free_reply_data: 770 kfree(reply_data); 771 free_req_info: 772 kfree(req_info); 773 774 return ret; 775 } 776 777 static int ethnl_perphy_dump_one_dev(struct sk_buff *skb, 778 struct ethnl_perphy_dump_ctx *ctx, 779 const struct genl_info *info) 780 { 781 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 782 struct net_device *dev = ethnl_ctx->req_info->dev; 783 struct phy_device_node *pdn; 784 int ret; 785 786 if (!dev->link_topo) 787 return 0; 788 789 xa_for_each_start(&dev->link_topo->phys, ctx->pos_phyindex, pdn, 790 ctx->pos_phyindex) { 791 ethnl_ctx->req_info->phy_index = ctx->pos_phyindex; 792 793 /* We can re-use the original dump_one as ->prepare_data in 794 * commands use ethnl_req_get_phydev(), which gets the PHY from 795 * the req_info->phy_index 796 */ 797 ret = ethnl_default_dump_one(skb, dev, ethnl_ctx, info); 798 if (ret) 799 return ret; 800 } 801 802 ctx->pos_phyindex = 0; 803 804 return 0; 805 } 806 807 static int ethnl_perphy_dump_all_dev(struct sk_buff *skb, 808 struct ethnl_perphy_dump_ctx *ctx, 809 const struct genl_info *info) 810 { 811 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 812 struct net *net = sock_net(skb->sk); 813 netdevice_tracker dev_tracker; 814 struct net_device *dev; 815 int ret = 0; 816 817 rcu_read_lock(); 818 for_each_netdev_dump(net, dev, ethnl_ctx->pos_ifindex) { 819 netdev_hold(dev, &dev_tracker, GFP_ATOMIC); 820 rcu_read_unlock(); 821 822 /* per-PHY commands use ethnl_req_get_phydev(), which needs the 823 * net_device in the req_info 824 */ 825 ethnl_ctx->req_info->dev = dev; 826 ret = ethnl_perphy_dump_one_dev(skb, ctx, info); 827 828 rcu_read_lock(); 829 netdev_put(dev, &dev_tracker); 830 ethnl_ctx->req_info->dev = NULL; 831 832 if (ret < 0 && ret != -EOPNOTSUPP) { 833 if (likely(skb->len)) 834 ret = skb->len; 835 break; 836 } 837 ret = 0; 838 } 839 rcu_read_unlock(); 840 841 return ret; 842 } 843 844 /* per-PHY ->dumpit() handler for GET requests. */ 845 static int ethnl_perphy_dumpit(struct sk_buff *skb, 846 struct netlink_callback *cb) 847 { 848 struct ethnl_perphy_dump_ctx *ctx = ethnl_perphy_dump_context(cb); 849 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 850 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 851 int ret = 0; 852 853 if (ctx->ifindex) { 854 netdevice_tracker dev_tracker; 855 struct net_device *dev; 856 857 dev = netdev_get_by_index(genl_info_net(&info->info), 858 ctx->ifindex, &dev_tracker, 859 GFP_KERNEL); 860 if (!dev) 861 return -ENODEV; 862 863 ethnl_ctx->req_info->dev = dev; 864 ret = ethnl_perphy_dump_one_dev(skb, ctx, genl_info_dump(cb)); 865 866 if (ret < 0 && ret != -EOPNOTSUPP && likely(skb->len)) 867 ret = skb->len; 868 869 netdev_put(dev, &dev_tracker); 870 } else { 871 ret = ethnl_perphy_dump_all_dev(skb, ctx, genl_info_dump(cb)); 872 } 873 874 return ret; 875 } 876 877 /* per-PHY ->done() handler for GET requests */ 878 static int ethnl_perphy_done(struct netlink_callback *cb) 879 { 880 struct ethnl_perphy_dump_ctx *ctx = ethnl_perphy_dump_context(cb); 881 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 882 883 kfree(ethnl_ctx->reply_data); 884 kfree(ethnl_ctx->req_info); 885 886 return 0; 887 } 888 889 /* default ->done() handler for GET requests */ 890 static int ethnl_default_done(struct netlink_callback *cb) 891 { 892 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 893 894 kfree(ctx->reply_data); 895 kfree(ctx->req_info); 896 897 return 0; 898 } 899 900 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 901 { 902 const struct ethnl_request_ops *ops; 903 const u8 cmd = info->genlhdr->cmd; 904 struct ethnl_req_info *req_info; 905 struct net_device *dev; 906 bool need_rtnl; 907 int ret; 908 909 ops = ethnl_default_requests[cmd]; 910 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 911 return -EOPNOTSUPP; 912 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 913 return -EINVAL; 914 915 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 916 if (!req_info) 917 return -ENOMEM; 918 919 ret = ethnl_default_parse(req_info, info, ops, true); 920 if (ret < 0) 921 goto out_free_req; 922 923 if (ops->set_validate) { 924 ret = ops->set_validate(req_info, info); 925 /* 0 means nothing to do */ 926 if (ret <= 0) 927 goto out_dev; 928 } 929 930 dev = req_info->dev; 931 need_rtnl = !netdev_need_ops_lock(dev) || 932 ethtool_nl_msg_needs_rtnl(dev, cmd); 933 934 if (need_rtnl) 935 rtnl_lock(); 936 netdev_lock_ops(dev); 937 dev->cfg_pending = kmemdup(dev->cfg, sizeof(*dev->cfg), 938 GFP_KERNEL_ACCOUNT); 939 if (!dev->cfg_pending) { 940 ret = -ENOMEM; 941 goto out_tie_cfg; 942 } 943 944 ret = ethnl_ops_begin(dev); 945 if (ret < 0) 946 goto out_free_cfg; 947 948 ret = ops->set(req_info, info); 949 if (ret < 0) 950 goto out_ops; 951 952 swap(dev->cfg, dev->cfg_pending); 953 if (!ret) 954 goto out_ops; 955 ethnl_notify(dev, ops->set_ntf_cmd, req_info); 956 957 ret = 0; 958 out_ops: 959 ethnl_ops_complete(dev); 960 out_free_cfg: 961 kfree(dev->cfg_pending); 962 out_tie_cfg: 963 dev->cfg_pending = dev->cfg; 964 netdev_unlock_ops(dev); 965 if (need_rtnl) 966 rtnl_unlock(); 967 out_dev: 968 ethnl_parse_header_dev_put(req_info); 969 out_free_req: 970 kfree(req_info); 971 return ret; 972 } 973 974 static const struct ethnl_request_ops * 975 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 976 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 977 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 978 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 979 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 980 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 981 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 982 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 983 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 984 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 985 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 986 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 987 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 988 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 989 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 990 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 991 [ETHTOOL_MSG_RSS_NTF] = ðnl_rss_request_ops, 992 [ETHTOOL_MSG_RSS_CREATE_NTF] = ðnl_rss_request_ops, 993 }; 994 995 /* default notification handler */ 996 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 997 const struct ethnl_req_info *orig_req_info) 998 { 999 struct ethnl_reply_data *reply_data; 1000 const struct ethnl_request_ops *ops; 1001 struct ethnl_req_info *req_info; 1002 struct genl_info info; 1003 struct sk_buff *skb; 1004 void *reply_payload; 1005 int reply_len; 1006 int ret; 1007 1008 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 1009 1010 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 1011 !ethnl_default_notify_ops[cmd], 1012 "unexpected notification type %u\n", cmd)) 1013 return; 1014 ops = ethnl_default_notify_ops[cmd]; 1015 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 1016 if (!req_info) 1017 return; 1018 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 1019 if (!reply_data) { 1020 kfree(req_info); 1021 return; 1022 } 1023 1024 req_info->dev = dev; 1025 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 1026 if (orig_req_info) { 1027 req_info->phy_index = orig_req_info->phy_index; 1028 memcpy(&req_info[1], &orig_req_info[1], 1029 ops->req_info_size - sizeof(*req_info)); 1030 } 1031 1032 netdev_assert_locked_ops_compat(dev); 1033 1034 ethnl_init_reply_data(reply_data, ops, dev); 1035 ret = ops->prepare_data(req_info, reply_data, &info); 1036 if (ret < 0) 1037 goto err_rep; 1038 ret = ops->reply_size(req_info, reply_data); 1039 if (ret < 0) 1040 goto err_cleanup; 1041 reply_len = ret + ethnl_reply_header_size(); 1042 skb = genlmsg_new(reply_len, GFP_KERNEL); 1043 if (!skb) 1044 goto err_cleanup; 1045 reply_payload = ethnl_bcastmsg_put(skb, cmd); 1046 if (!reply_payload) 1047 goto err_skb; 1048 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 1049 if (ret < 0) 1050 goto err_msg; 1051 ret = ops->fill_reply(skb, req_info, reply_data); 1052 if (ret < 0) 1053 goto err_msg; 1054 if (ops->cleanup_data) 1055 ops->cleanup_data(reply_data); 1056 1057 genlmsg_end(skb, reply_payload); 1058 kfree(reply_data); 1059 kfree(req_info); 1060 ethnl_multicast(skb, dev); 1061 return; 1062 1063 err_msg: 1064 WARN_ONCE(ret == -EMSGSIZE, 1065 "calculated message payload length (%d) not sufficient\n", 1066 reply_len); 1067 err_skb: 1068 nlmsg_free(skb); 1069 err_cleanup: 1070 if (ops->cleanup_data) 1071 ops->cleanup_data(reply_data); 1072 err_rep: 1073 kfree(reply_data); 1074 kfree(req_info); 1075 return; 1076 } 1077 1078 /* notifications */ 1079 1080 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 1081 const struct ethnl_req_info *req_info); 1082 1083 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 1084 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 1085 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 1086 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 1087 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 1088 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 1089 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 1090 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 1091 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 1092 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 1093 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 1094 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 1095 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 1096 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 1097 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 1098 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 1099 [ETHTOOL_MSG_RSS_NTF] = ethnl_default_notify, 1100 [ETHTOOL_MSG_RSS_CREATE_NTF] = ethnl_default_notify, 1101 }; 1102 1103 void ethnl_notify(struct net_device *dev, unsigned int cmd, 1104 const struct ethnl_req_info *req_info) 1105 { 1106 if (unlikely(!ethnl_ok)) 1107 return; 1108 netdev_assert_locked_ops_compat(dev); 1109 1110 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 1111 ethnl_notify_handlers[cmd])) 1112 ethnl_notify_handlers[cmd](dev, cmd, req_info); 1113 else 1114 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 1115 cmd, netdev_name(dev)); 1116 } 1117 1118 void ethtool_notify(struct net_device *dev, unsigned int cmd) 1119 { 1120 ethnl_notify(dev, cmd, NULL); 1121 } 1122 EXPORT_SYMBOL(ethtool_notify); 1123 1124 static void ethnl_notify_features(struct netdev_notifier_info *info) 1125 { 1126 struct net_device *dev = netdev_notifier_info_to_dev(info); 1127 1128 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF); 1129 } 1130 1131 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 1132 void *ptr) 1133 { 1134 struct netdev_notifier_info *info = ptr; 1135 struct netlink_ext_ack *extack; 1136 struct net_device *dev; 1137 1138 dev = netdev_notifier_info_to_dev(info); 1139 extack = netdev_notifier_info_to_extack(info); 1140 1141 switch (event) { 1142 case NETDEV_FEAT_CHANGE: 1143 ethnl_notify_features(ptr); 1144 break; 1145 case NETDEV_PRE_UP: 1146 if (dev->ethtool->module_fw_flash_in_progress) { 1147 NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware"); 1148 return NOTIFY_BAD; 1149 } 1150 } 1151 1152 return NOTIFY_DONE; 1153 } 1154 1155 static struct notifier_block ethnl_netdev_notifier = { 1156 .notifier_call = ethnl_netdev_event, 1157 }; 1158 1159 /* genetlink setup */ 1160 1161 static const struct genl_ops ethtool_genl_ops[] = { 1162 { 1163 .cmd = ETHTOOL_MSG_STRSET_GET, 1164 .doit = ethnl_default_doit, 1165 .start = ethnl_default_start, 1166 .dumpit = ethnl_default_dumpit, 1167 .done = ethnl_default_done, 1168 .policy = ethnl_strset_get_policy, 1169 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 1170 }, 1171 { 1172 .cmd = ETHTOOL_MSG_LINKINFO_GET, 1173 .doit = ethnl_default_doit, 1174 .start = ethnl_default_start, 1175 .dumpit = ethnl_default_dumpit, 1176 .done = ethnl_default_done, 1177 .policy = ethnl_linkinfo_get_policy, 1178 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 1179 }, 1180 { 1181 .cmd = ETHTOOL_MSG_LINKINFO_SET, 1182 .flags = GENL_UNS_ADMIN_PERM, 1183 .doit = ethnl_default_set_doit, 1184 .policy = ethnl_linkinfo_set_policy, 1185 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 1186 }, 1187 { 1188 .cmd = ETHTOOL_MSG_LINKMODES_GET, 1189 .doit = ethnl_default_doit, 1190 .start = ethnl_default_start, 1191 .dumpit = ethnl_default_dumpit, 1192 .done = ethnl_default_done, 1193 .policy = ethnl_linkmodes_get_policy, 1194 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 1195 }, 1196 { 1197 .cmd = ETHTOOL_MSG_LINKMODES_SET, 1198 .flags = GENL_UNS_ADMIN_PERM, 1199 .doit = ethnl_default_set_doit, 1200 .policy = ethnl_linkmodes_set_policy, 1201 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 1202 }, 1203 { 1204 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 1205 .doit = ethnl_default_doit, 1206 .start = ethnl_default_start, 1207 .dumpit = ethnl_default_dumpit, 1208 .done = ethnl_default_done, 1209 .policy = ethnl_linkstate_get_policy, 1210 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 1211 }, 1212 { 1213 .cmd = ETHTOOL_MSG_DEBUG_GET, 1214 .doit = ethnl_default_doit, 1215 .start = ethnl_default_start, 1216 .dumpit = ethnl_default_dumpit, 1217 .done = ethnl_default_done, 1218 .policy = ethnl_debug_get_policy, 1219 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 1220 }, 1221 { 1222 .cmd = ETHTOOL_MSG_DEBUG_SET, 1223 .flags = GENL_UNS_ADMIN_PERM, 1224 .doit = ethnl_default_set_doit, 1225 .policy = ethnl_debug_set_policy, 1226 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 1227 }, 1228 { 1229 .cmd = ETHTOOL_MSG_WOL_GET, 1230 .flags = GENL_UNS_ADMIN_PERM, 1231 .doit = ethnl_default_doit, 1232 .start = ethnl_default_start, 1233 .dumpit = ethnl_default_dumpit, 1234 .done = ethnl_default_done, 1235 .policy = ethnl_wol_get_policy, 1236 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 1237 }, 1238 { 1239 .cmd = ETHTOOL_MSG_WOL_SET, 1240 .flags = GENL_UNS_ADMIN_PERM, 1241 .doit = ethnl_default_set_doit, 1242 .policy = ethnl_wol_set_policy, 1243 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 1244 }, 1245 { 1246 .cmd = ETHTOOL_MSG_FEATURES_GET, 1247 .doit = ethnl_default_doit, 1248 .start = ethnl_default_start, 1249 .dumpit = ethnl_default_dumpit, 1250 .done = ethnl_default_done, 1251 .policy = ethnl_features_get_policy, 1252 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 1253 }, 1254 { 1255 .cmd = ETHTOOL_MSG_FEATURES_SET, 1256 .flags = GENL_UNS_ADMIN_PERM, 1257 .doit = ethnl_set_features, 1258 .policy = ethnl_features_set_policy, 1259 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 1260 }, 1261 { 1262 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 1263 .doit = ethnl_default_doit, 1264 .start = ethnl_default_start, 1265 .dumpit = ethnl_default_dumpit, 1266 .done = ethnl_default_done, 1267 .policy = ethnl_privflags_get_policy, 1268 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 1269 }, 1270 { 1271 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 1272 .flags = GENL_UNS_ADMIN_PERM, 1273 .doit = ethnl_default_set_doit, 1274 .policy = ethnl_privflags_set_policy, 1275 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 1276 }, 1277 { 1278 .cmd = ETHTOOL_MSG_RINGS_GET, 1279 .doit = ethnl_default_doit, 1280 .start = ethnl_default_start, 1281 .dumpit = ethnl_default_dumpit, 1282 .done = ethnl_default_done, 1283 .policy = ethnl_rings_get_policy, 1284 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 1285 }, 1286 { 1287 .cmd = ETHTOOL_MSG_RINGS_SET, 1288 .flags = GENL_UNS_ADMIN_PERM, 1289 .doit = ethnl_default_set_doit, 1290 .policy = ethnl_rings_set_policy, 1291 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 1292 }, 1293 { 1294 .cmd = ETHTOOL_MSG_CHANNELS_GET, 1295 .doit = ethnl_default_doit, 1296 .start = ethnl_default_start, 1297 .dumpit = ethnl_default_dumpit, 1298 .done = ethnl_default_done, 1299 .policy = ethnl_channels_get_policy, 1300 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 1301 }, 1302 { 1303 .cmd = ETHTOOL_MSG_CHANNELS_SET, 1304 .flags = GENL_UNS_ADMIN_PERM, 1305 .doit = ethnl_default_set_doit, 1306 .policy = ethnl_channels_set_policy, 1307 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 1308 }, 1309 { 1310 .cmd = ETHTOOL_MSG_COALESCE_GET, 1311 .doit = ethnl_default_doit, 1312 .start = ethnl_default_start, 1313 .dumpit = ethnl_default_dumpit, 1314 .done = ethnl_default_done, 1315 .policy = ethnl_coalesce_get_policy, 1316 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 1317 }, 1318 { 1319 .cmd = ETHTOOL_MSG_COALESCE_SET, 1320 .flags = GENL_UNS_ADMIN_PERM, 1321 .doit = ethnl_default_set_doit, 1322 .policy = ethnl_coalesce_set_policy, 1323 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 1324 }, 1325 { 1326 .cmd = ETHTOOL_MSG_PAUSE_GET, 1327 .doit = ethnl_default_doit, 1328 .start = ethnl_default_start, 1329 .dumpit = ethnl_default_dumpit, 1330 .done = ethnl_default_done, 1331 .policy = ethnl_pause_get_policy, 1332 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 1333 }, 1334 { 1335 .cmd = ETHTOOL_MSG_PAUSE_SET, 1336 .flags = GENL_UNS_ADMIN_PERM, 1337 .doit = ethnl_default_set_doit, 1338 .policy = ethnl_pause_set_policy, 1339 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 1340 }, 1341 { 1342 .cmd = ETHTOOL_MSG_EEE_GET, 1343 .doit = ethnl_default_doit, 1344 .start = ethnl_default_start, 1345 .dumpit = ethnl_default_dumpit, 1346 .done = ethnl_default_done, 1347 .policy = ethnl_eee_get_policy, 1348 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 1349 }, 1350 { 1351 .cmd = ETHTOOL_MSG_EEE_SET, 1352 .flags = GENL_UNS_ADMIN_PERM, 1353 .doit = ethnl_default_set_doit, 1354 .policy = ethnl_eee_set_policy, 1355 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 1356 }, 1357 { 1358 .cmd = ETHTOOL_MSG_TSINFO_GET, 1359 .doit = ethnl_default_doit, 1360 .start = ethnl_tsinfo_start, 1361 .dumpit = ethnl_tsinfo_dumpit, 1362 .done = ethnl_tsinfo_done, 1363 .policy = ethnl_tsinfo_get_policy, 1364 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 1365 }, 1366 { 1367 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 1368 .flags = GENL_UNS_ADMIN_PERM, 1369 .doit = ethnl_act_cable_test, 1370 .policy = ethnl_cable_test_act_policy, 1371 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 1372 }, 1373 { 1374 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 1375 .flags = GENL_UNS_ADMIN_PERM, 1376 .doit = ethnl_act_cable_test_tdr, 1377 .policy = ethnl_cable_test_tdr_act_policy, 1378 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 1379 }, 1380 { 1381 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1382 .doit = ethnl_tunnel_info_doit, 1383 .start = ethnl_tunnel_info_start, 1384 .dumpit = ethnl_tunnel_info_dumpit, 1385 .policy = ethnl_tunnel_info_get_policy, 1386 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1387 }, 1388 { 1389 .cmd = ETHTOOL_MSG_FEC_GET, 1390 .doit = ethnl_default_doit, 1391 .start = ethnl_default_start, 1392 .dumpit = ethnl_default_dumpit, 1393 .done = ethnl_default_done, 1394 .policy = ethnl_fec_get_policy, 1395 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1396 }, 1397 { 1398 .cmd = ETHTOOL_MSG_FEC_SET, 1399 .flags = GENL_UNS_ADMIN_PERM, 1400 .doit = ethnl_default_set_doit, 1401 .policy = ethnl_fec_set_policy, 1402 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1403 }, 1404 { 1405 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1406 .flags = GENL_UNS_ADMIN_PERM, 1407 .doit = ethnl_default_doit, 1408 .start = ethnl_default_start, 1409 .dumpit = ethnl_default_dumpit, 1410 .done = ethnl_default_done, 1411 .policy = ethnl_module_eeprom_get_policy, 1412 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1413 }, 1414 { 1415 .cmd = ETHTOOL_MSG_STATS_GET, 1416 .doit = ethnl_default_doit, 1417 .start = ethnl_default_start, 1418 .dumpit = ethnl_default_dumpit, 1419 .done = ethnl_default_done, 1420 .policy = ethnl_stats_get_policy, 1421 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1422 }, 1423 { 1424 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1425 .doit = ethnl_default_doit, 1426 .start = ethnl_default_start, 1427 .dumpit = ethnl_default_dumpit, 1428 .done = ethnl_default_done, 1429 .policy = ethnl_phc_vclocks_get_policy, 1430 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1431 }, 1432 { 1433 .cmd = ETHTOOL_MSG_MODULE_GET, 1434 .doit = ethnl_default_doit, 1435 .start = ethnl_default_start, 1436 .dumpit = ethnl_default_dumpit, 1437 .done = ethnl_default_done, 1438 .policy = ethnl_module_get_policy, 1439 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1440 }, 1441 { 1442 .cmd = ETHTOOL_MSG_MODULE_SET, 1443 .flags = GENL_UNS_ADMIN_PERM, 1444 .doit = ethnl_default_set_doit, 1445 .policy = ethnl_module_set_policy, 1446 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1447 }, 1448 { 1449 .cmd = ETHTOOL_MSG_PSE_GET, 1450 .doit = ethnl_default_doit, 1451 .start = ethnl_perphy_start, 1452 .dumpit = ethnl_perphy_dumpit, 1453 .done = ethnl_perphy_done, 1454 .policy = ethnl_pse_get_policy, 1455 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1456 }, 1457 { 1458 .cmd = ETHTOOL_MSG_PSE_SET, 1459 .flags = GENL_UNS_ADMIN_PERM, 1460 .doit = ethnl_default_set_doit, 1461 .policy = ethnl_pse_set_policy, 1462 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1463 }, 1464 { 1465 .cmd = ETHTOOL_MSG_RSS_GET, 1466 .doit = ethnl_default_doit, 1467 .start = ethnl_rss_dump_start, 1468 .dumpit = ethnl_rss_dumpit, 1469 .policy = ethnl_rss_get_policy, 1470 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1471 }, 1472 { 1473 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1474 .doit = ethnl_default_doit, 1475 .start = ethnl_perphy_start, 1476 .dumpit = ethnl_perphy_dumpit, 1477 .done = ethnl_perphy_done, 1478 .policy = ethnl_plca_get_cfg_policy, 1479 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1480 }, 1481 { 1482 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1483 .flags = GENL_UNS_ADMIN_PERM, 1484 .doit = ethnl_default_set_doit, 1485 .policy = ethnl_plca_set_cfg_policy, 1486 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1487 }, 1488 { 1489 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1490 .doit = ethnl_default_doit, 1491 .start = ethnl_perphy_start, 1492 .dumpit = ethnl_perphy_dumpit, 1493 .done = ethnl_perphy_done, 1494 .policy = ethnl_plca_get_status_policy, 1495 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1496 }, 1497 { 1498 .cmd = ETHTOOL_MSG_MM_GET, 1499 .doit = ethnl_default_doit, 1500 .start = ethnl_default_start, 1501 .dumpit = ethnl_default_dumpit, 1502 .done = ethnl_default_done, 1503 .policy = ethnl_mm_get_policy, 1504 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1505 }, 1506 { 1507 .cmd = ETHTOOL_MSG_MM_SET, 1508 .flags = GENL_UNS_ADMIN_PERM, 1509 .doit = ethnl_default_set_doit, 1510 .policy = ethnl_mm_set_policy, 1511 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1512 }, 1513 { 1514 .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT, 1515 .flags = GENL_UNS_ADMIN_PERM, 1516 .doit = ethnl_act_module_fw_flash, 1517 .policy = ethnl_module_fw_flash_act_policy, 1518 .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1, 1519 }, 1520 { 1521 .cmd = ETHTOOL_MSG_PHY_GET, 1522 .doit = ethnl_default_doit, 1523 .start = ethnl_perphy_start, 1524 .dumpit = ethnl_perphy_dumpit, 1525 .done = ethnl_perphy_done, 1526 .policy = ethnl_phy_get_policy, 1527 .maxattr = ARRAY_SIZE(ethnl_phy_get_policy) - 1, 1528 }, 1529 { 1530 .cmd = ETHTOOL_MSG_TSCONFIG_GET, 1531 .doit = ethnl_default_doit, 1532 .start = ethnl_default_start, 1533 .dumpit = ethnl_default_dumpit, 1534 .done = ethnl_default_done, 1535 .policy = ethnl_tsconfig_get_policy, 1536 .maxattr = ARRAY_SIZE(ethnl_tsconfig_get_policy) - 1, 1537 }, 1538 { 1539 .cmd = ETHTOOL_MSG_TSCONFIG_SET, 1540 .flags = GENL_UNS_ADMIN_PERM, 1541 .doit = ethnl_default_set_doit, 1542 .policy = ethnl_tsconfig_set_policy, 1543 .maxattr = ARRAY_SIZE(ethnl_tsconfig_set_policy) - 1, 1544 }, 1545 { 1546 .cmd = ETHTOOL_MSG_RSS_SET, 1547 .flags = GENL_UNS_ADMIN_PERM, 1548 .doit = ethnl_default_set_doit, 1549 .policy = ethnl_rss_set_policy, 1550 .maxattr = ARRAY_SIZE(ethnl_rss_set_policy) - 1, 1551 }, 1552 { 1553 .cmd = ETHTOOL_MSG_RSS_CREATE_ACT, 1554 .flags = GENL_UNS_ADMIN_PERM, 1555 .doit = ethnl_rss_create_doit, 1556 .policy = ethnl_rss_create_policy, 1557 .maxattr = ARRAY_SIZE(ethnl_rss_create_policy) - 1, 1558 }, 1559 { 1560 .cmd = ETHTOOL_MSG_RSS_DELETE_ACT, 1561 .flags = GENL_UNS_ADMIN_PERM, 1562 .doit = ethnl_rss_delete_doit, 1563 .policy = ethnl_rss_delete_policy, 1564 .maxattr = ARRAY_SIZE(ethnl_rss_delete_policy) - 1, 1565 }, 1566 { 1567 .cmd = ETHTOOL_MSG_MSE_GET, 1568 .doit = ethnl_default_doit, 1569 .start = ethnl_perphy_start, 1570 .dumpit = ethnl_perphy_dumpit, 1571 .done = ethnl_perphy_done, 1572 .policy = ethnl_mse_get_policy, 1573 .maxattr = ARRAY_SIZE(ethnl_mse_get_policy) - 1, 1574 }, 1575 }; 1576 1577 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1578 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1579 }; 1580 1581 static struct genl_family ethtool_genl_family __ro_after_init = { 1582 .name = ETHTOOL_GENL_NAME, 1583 .version = ETHTOOL_GENL_VERSION, 1584 .netnsok = true, 1585 .parallel_ops = true, 1586 .ops = ethtool_genl_ops, 1587 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1588 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1589 .mcgrps = ethtool_nl_mcgrps, 1590 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1591 .sock_priv_size = sizeof(struct ethnl_sock_priv), 1592 .sock_priv_destroy = ethnl_sock_priv_destroy, 1593 }; 1594 1595 /* module setup */ 1596 1597 static int __init ethnl_init(void) 1598 { 1599 int ret; 1600 1601 ret = genl_register_family(ðtool_genl_family); 1602 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1603 return ret; 1604 ethnl_ok = true; 1605 1606 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1607 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1608 return ret; 1609 } 1610 1611 subsys_initcall(ethnl_init); 1612