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