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_cleanup; 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; 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 ctx->reply_data->dev = NULL; 573 if (ret < 0) 574 genlmsg_cancel(skb, ehdr); 575 else 576 genlmsg_end(skb, ehdr); 577 return ret; 578 } 579 580 /* Default ->dumpit() handler for GET requests. */ 581 static int ethnl_default_dumpit(struct sk_buff *skb, 582 struct netlink_callback *cb) 583 { 584 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 585 struct net *net = sock_net(skb->sk); 586 struct net_device *dev; 587 int ret = 0; 588 589 rcu_read_lock(); 590 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 591 dev_hold(dev); 592 rcu_read_unlock(); 593 594 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 595 596 rcu_read_lock(); 597 dev_put(dev); 598 599 if (ret < 0 && ret != -EOPNOTSUPP) { 600 if (likely(skb->len)) 601 ret = skb->len; 602 break; 603 } 604 ret = 0; 605 } 606 rcu_read_unlock(); 607 608 return ret; 609 } 610 611 /* generic ->start() handler for GET requests */ 612 static int ethnl_default_start(struct netlink_callback *cb) 613 { 614 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 615 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 616 struct ethnl_reply_data *reply_data; 617 const struct ethnl_request_ops *ops; 618 struct ethnl_req_info *req_info; 619 struct genlmsghdr *ghdr; 620 int ret; 621 622 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 623 624 ghdr = nlmsg_data(cb->nlh); 625 ops = ethnl_default_requests[ghdr->cmd]; 626 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 627 return -EOPNOTSUPP; 628 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 629 if (!req_info) 630 return -ENOMEM; 631 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 632 if (!reply_data) { 633 ret = -ENOMEM; 634 goto free_req_info; 635 } 636 637 ret = ethnl_default_parse(req_info, &info->info, ops, false); 638 if (req_info->dev) { 639 /* We ignore device specification in dump requests but as the 640 * same parser as for non-dump (doit) requests is used, it 641 * would take reference to the device if it finds one 642 */ 643 netdev_put(req_info->dev, &req_info->dev_tracker); 644 req_info->dev = NULL; 645 } 646 if (ret < 0) 647 goto free_reply_data; 648 649 ctx->ops = ops; 650 ctx->req_info = req_info; 651 ctx->reply_data = reply_data; 652 ctx->pos_ifindex = 0; 653 654 return 0; 655 656 free_reply_data: 657 kfree(reply_data); 658 free_req_info: 659 kfree(req_info); 660 661 return ret; 662 } 663 664 /* default ->done() handler for GET requests */ 665 static int ethnl_default_done(struct netlink_callback *cb) 666 { 667 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 668 669 kfree(ctx->reply_data); 670 kfree(ctx->req_info); 671 672 return 0; 673 } 674 675 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 676 { 677 const struct ethnl_request_ops *ops; 678 struct ethnl_req_info req_info = {}; 679 const u8 cmd = info->genlhdr->cmd; 680 struct net_device *dev; 681 int ret; 682 683 ops = ethnl_default_requests[cmd]; 684 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 685 return -EOPNOTSUPP; 686 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 687 return -EINVAL; 688 689 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr], 690 genl_info_net(info), info->extack, 691 true); 692 if (ret < 0) 693 return ret; 694 695 if (ops->set_validate) { 696 ret = ops->set_validate(&req_info, info); 697 /* 0 means nothing to do */ 698 if (ret <= 0) 699 goto out_dev; 700 } 701 702 dev = req_info.dev; 703 704 rtnl_lock(); 705 netdev_lock_ops(dev); 706 dev->cfg_pending = kmemdup(dev->cfg, sizeof(*dev->cfg), 707 GFP_KERNEL_ACCOUNT); 708 if (!dev->cfg_pending) { 709 ret = -ENOMEM; 710 goto out_tie_cfg; 711 } 712 713 ret = ethnl_ops_begin(dev); 714 if (ret < 0) 715 goto out_free_cfg; 716 717 ret = ops->set(&req_info, info); 718 if (ret < 0) 719 goto out_ops; 720 721 swap(dev->cfg, dev->cfg_pending); 722 if (!ret) 723 goto out_ops; 724 ethtool_notify(dev, ops->set_ntf_cmd, NULL); 725 726 ret = 0; 727 out_ops: 728 ethnl_ops_complete(dev); 729 out_free_cfg: 730 kfree(dev->cfg_pending); 731 out_tie_cfg: 732 dev->cfg_pending = dev->cfg; 733 netdev_unlock_ops(dev); 734 rtnl_unlock(); 735 out_dev: 736 ethnl_parse_header_dev_put(&req_info); 737 return ret; 738 } 739 740 static const struct ethnl_request_ops * 741 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 742 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 743 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 744 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 745 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 746 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 747 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 748 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 749 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 750 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 751 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 752 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 753 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 754 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 755 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 756 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 757 }; 758 759 /* default notification handler */ 760 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 761 const void *data) 762 { 763 struct ethnl_reply_data *reply_data; 764 const struct ethnl_request_ops *ops; 765 struct ethnl_req_info *req_info; 766 struct genl_info info; 767 struct sk_buff *skb; 768 void *reply_payload; 769 int reply_len; 770 int ret; 771 772 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 773 774 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 775 !ethnl_default_notify_ops[cmd], 776 "unexpected notification type %u\n", cmd)) 777 return; 778 ops = ethnl_default_notify_ops[cmd]; 779 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 780 if (!req_info) 781 return; 782 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 783 if (!reply_data) { 784 kfree(req_info); 785 return; 786 } 787 788 req_info->dev = dev; 789 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 790 791 netdev_ops_assert_locked(dev); 792 793 ethnl_init_reply_data(reply_data, ops, dev); 794 ret = ops->prepare_data(req_info, reply_data, &info); 795 if (ret < 0) 796 goto err_cleanup; 797 ret = ops->reply_size(req_info, reply_data); 798 if (ret < 0) 799 goto err_cleanup; 800 reply_len = ret + ethnl_reply_header_size(); 801 skb = genlmsg_new(reply_len, GFP_KERNEL); 802 if (!skb) 803 goto err_cleanup; 804 reply_payload = ethnl_bcastmsg_put(skb, cmd); 805 if (!reply_payload) 806 goto err_skb; 807 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 808 if (ret < 0) 809 goto err_msg; 810 ret = ops->fill_reply(skb, req_info, reply_data); 811 if (ret < 0) 812 goto err_msg; 813 if (ops->cleanup_data) 814 ops->cleanup_data(reply_data); 815 816 genlmsg_end(skb, reply_payload); 817 kfree(reply_data); 818 kfree(req_info); 819 ethnl_multicast(skb, dev); 820 return; 821 822 err_msg: 823 WARN_ONCE(ret == -EMSGSIZE, 824 "calculated message payload length (%d) not sufficient\n", 825 reply_len); 826 err_skb: 827 nlmsg_free(skb); 828 err_cleanup: 829 if (ops->cleanup_data) 830 ops->cleanup_data(reply_data); 831 kfree(reply_data); 832 kfree(req_info); 833 return; 834 } 835 836 /* notifications */ 837 838 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 839 const void *data); 840 841 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 842 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 843 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 844 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 845 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 846 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 847 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 848 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 849 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 850 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 851 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 852 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 853 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 854 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 855 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 856 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 857 }; 858 859 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) 860 { 861 if (unlikely(!ethnl_ok)) 862 return; 863 ASSERT_RTNL(); 864 865 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 866 ethnl_notify_handlers[cmd])) 867 ethnl_notify_handlers[cmd](dev, cmd, data); 868 else 869 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 870 cmd, netdev_name(dev)); 871 } 872 EXPORT_SYMBOL(ethtool_notify); 873 874 static void ethnl_notify_features(struct netdev_notifier_info *info) 875 { 876 struct net_device *dev = netdev_notifier_info_to_dev(info); 877 878 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); 879 } 880 881 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 882 void *ptr) 883 { 884 struct netdev_notifier_info *info = ptr; 885 struct netlink_ext_ack *extack; 886 struct net_device *dev; 887 888 dev = netdev_notifier_info_to_dev(info); 889 extack = netdev_notifier_info_to_extack(info); 890 891 switch (event) { 892 case NETDEV_FEAT_CHANGE: 893 ethnl_notify_features(ptr); 894 break; 895 case NETDEV_PRE_UP: 896 if (dev->ethtool->module_fw_flash_in_progress) { 897 NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware"); 898 return NOTIFY_BAD; 899 } 900 } 901 902 return NOTIFY_DONE; 903 } 904 905 static struct notifier_block ethnl_netdev_notifier = { 906 .notifier_call = ethnl_netdev_event, 907 }; 908 909 /* genetlink setup */ 910 911 static const struct genl_ops ethtool_genl_ops[] = { 912 { 913 .cmd = ETHTOOL_MSG_STRSET_GET, 914 .doit = ethnl_default_doit, 915 .start = ethnl_default_start, 916 .dumpit = ethnl_default_dumpit, 917 .done = ethnl_default_done, 918 .policy = ethnl_strset_get_policy, 919 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 920 }, 921 { 922 .cmd = ETHTOOL_MSG_LINKINFO_GET, 923 .doit = ethnl_default_doit, 924 .start = ethnl_default_start, 925 .dumpit = ethnl_default_dumpit, 926 .done = ethnl_default_done, 927 .policy = ethnl_linkinfo_get_policy, 928 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 929 }, 930 { 931 .cmd = ETHTOOL_MSG_LINKINFO_SET, 932 .flags = GENL_UNS_ADMIN_PERM, 933 .doit = ethnl_default_set_doit, 934 .policy = ethnl_linkinfo_set_policy, 935 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 936 }, 937 { 938 .cmd = ETHTOOL_MSG_LINKMODES_GET, 939 .doit = ethnl_default_doit, 940 .start = ethnl_default_start, 941 .dumpit = ethnl_default_dumpit, 942 .done = ethnl_default_done, 943 .policy = ethnl_linkmodes_get_policy, 944 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 945 }, 946 { 947 .cmd = ETHTOOL_MSG_LINKMODES_SET, 948 .flags = GENL_UNS_ADMIN_PERM, 949 .doit = ethnl_default_set_doit, 950 .policy = ethnl_linkmodes_set_policy, 951 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 952 }, 953 { 954 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 955 .doit = ethnl_default_doit, 956 .start = ethnl_default_start, 957 .dumpit = ethnl_default_dumpit, 958 .done = ethnl_default_done, 959 .policy = ethnl_linkstate_get_policy, 960 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 961 }, 962 { 963 .cmd = ETHTOOL_MSG_DEBUG_GET, 964 .doit = ethnl_default_doit, 965 .start = ethnl_default_start, 966 .dumpit = ethnl_default_dumpit, 967 .done = ethnl_default_done, 968 .policy = ethnl_debug_get_policy, 969 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 970 }, 971 { 972 .cmd = ETHTOOL_MSG_DEBUG_SET, 973 .flags = GENL_UNS_ADMIN_PERM, 974 .doit = ethnl_default_set_doit, 975 .policy = ethnl_debug_set_policy, 976 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 977 }, 978 { 979 .cmd = ETHTOOL_MSG_WOL_GET, 980 .flags = GENL_UNS_ADMIN_PERM, 981 .doit = ethnl_default_doit, 982 .start = ethnl_default_start, 983 .dumpit = ethnl_default_dumpit, 984 .done = ethnl_default_done, 985 .policy = ethnl_wol_get_policy, 986 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 987 }, 988 { 989 .cmd = ETHTOOL_MSG_WOL_SET, 990 .flags = GENL_UNS_ADMIN_PERM, 991 .doit = ethnl_default_set_doit, 992 .policy = ethnl_wol_set_policy, 993 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 994 }, 995 { 996 .cmd = ETHTOOL_MSG_FEATURES_GET, 997 .doit = ethnl_default_doit, 998 .start = ethnl_default_start, 999 .dumpit = ethnl_default_dumpit, 1000 .done = ethnl_default_done, 1001 .policy = ethnl_features_get_policy, 1002 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 1003 }, 1004 { 1005 .cmd = ETHTOOL_MSG_FEATURES_SET, 1006 .flags = GENL_UNS_ADMIN_PERM, 1007 .doit = ethnl_set_features, 1008 .policy = ethnl_features_set_policy, 1009 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 1010 }, 1011 { 1012 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 1013 .doit = ethnl_default_doit, 1014 .start = ethnl_default_start, 1015 .dumpit = ethnl_default_dumpit, 1016 .done = ethnl_default_done, 1017 .policy = ethnl_privflags_get_policy, 1018 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 1019 }, 1020 { 1021 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 1022 .flags = GENL_UNS_ADMIN_PERM, 1023 .doit = ethnl_default_set_doit, 1024 .policy = ethnl_privflags_set_policy, 1025 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 1026 }, 1027 { 1028 .cmd = ETHTOOL_MSG_RINGS_GET, 1029 .doit = ethnl_default_doit, 1030 .start = ethnl_default_start, 1031 .dumpit = ethnl_default_dumpit, 1032 .done = ethnl_default_done, 1033 .policy = ethnl_rings_get_policy, 1034 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 1035 }, 1036 { 1037 .cmd = ETHTOOL_MSG_RINGS_SET, 1038 .flags = GENL_UNS_ADMIN_PERM, 1039 .doit = ethnl_default_set_doit, 1040 .policy = ethnl_rings_set_policy, 1041 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 1042 }, 1043 { 1044 .cmd = ETHTOOL_MSG_CHANNELS_GET, 1045 .doit = ethnl_default_doit, 1046 .start = ethnl_default_start, 1047 .dumpit = ethnl_default_dumpit, 1048 .done = ethnl_default_done, 1049 .policy = ethnl_channels_get_policy, 1050 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 1051 }, 1052 { 1053 .cmd = ETHTOOL_MSG_CHANNELS_SET, 1054 .flags = GENL_UNS_ADMIN_PERM, 1055 .doit = ethnl_default_set_doit, 1056 .policy = ethnl_channels_set_policy, 1057 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 1058 }, 1059 { 1060 .cmd = ETHTOOL_MSG_COALESCE_GET, 1061 .doit = ethnl_default_doit, 1062 .start = ethnl_default_start, 1063 .dumpit = ethnl_default_dumpit, 1064 .done = ethnl_default_done, 1065 .policy = ethnl_coalesce_get_policy, 1066 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 1067 }, 1068 { 1069 .cmd = ETHTOOL_MSG_COALESCE_SET, 1070 .flags = GENL_UNS_ADMIN_PERM, 1071 .doit = ethnl_default_set_doit, 1072 .policy = ethnl_coalesce_set_policy, 1073 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 1074 }, 1075 { 1076 .cmd = ETHTOOL_MSG_PAUSE_GET, 1077 .doit = ethnl_default_doit, 1078 .start = ethnl_default_start, 1079 .dumpit = ethnl_default_dumpit, 1080 .done = ethnl_default_done, 1081 .policy = ethnl_pause_get_policy, 1082 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 1083 }, 1084 { 1085 .cmd = ETHTOOL_MSG_PAUSE_SET, 1086 .flags = GENL_UNS_ADMIN_PERM, 1087 .doit = ethnl_default_set_doit, 1088 .policy = ethnl_pause_set_policy, 1089 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 1090 }, 1091 { 1092 .cmd = ETHTOOL_MSG_EEE_GET, 1093 .doit = ethnl_default_doit, 1094 .start = ethnl_default_start, 1095 .dumpit = ethnl_default_dumpit, 1096 .done = ethnl_default_done, 1097 .policy = ethnl_eee_get_policy, 1098 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 1099 }, 1100 { 1101 .cmd = ETHTOOL_MSG_EEE_SET, 1102 .flags = GENL_UNS_ADMIN_PERM, 1103 .doit = ethnl_default_set_doit, 1104 .policy = ethnl_eee_set_policy, 1105 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 1106 }, 1107 { 1108 .cmd = ETHTOOL_MSG_TSINFO_GET, 1109 .doit = ethnl_default_doit, 1110 .start = ethnl_tsinfo_start, 1111 .dumpit = ethnl_tsinfo_dumpit, 1112 .done = ethnl_tsinfo_done, 1113 .policy = ethnl_tsinfo_get_policy, 1114 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 1115 }, 1116 { 1117 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 1118 .flags = GENL_UNS_ADMIN_PERM, 1119 .doit = ethnl_act_cable_test, 1120 .policy = ethnl_cable_test_act_policy, 1121 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 1122 }, 1123 { 1124 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 1125 .flags = GENL_UNS_ADMIN_PERM, 1126 .doit = ethnl_act_cable_test_tdr, 1127 .policy = ethnl_cable_test_tdr_act_policy, 1128 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 1129 }, 1130 { 1131 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1132 .doit = ethnl_tunnel_info_doit, 1133 .start = ethnl_tunnel_info_start, 1134 .dumpit = ethnl_tunnel_info_dumpit, 1135 .policy = ethnl_tunnel_info_get_policy, 1136 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1137 }, 1138 { 1139 .cmd = ETHTOOL_MSG_FEC_GET, 1140 .doit = ethnl_default_doit, 1141 .start = ethnl_default_start, 1142 .dumpit = ethnl_default_dumpit, 1143 .done = ethnl_default_done, 1144 .policy = ethnl_fec_get_policy, 1145 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1146 }, 1147 { 1148 .cmd = ETHTOOL_MSG_FEC_SET, 1149 .flags = GENL_UNS_ADMIN_PERM, 1150 .doit = ethnl_default_set_doit, 1151 .policy = ethnl_fec_set_policy, 1152 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1153 }, 1154 { 1155 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1156 .flags = GENL_UNS_ADMIN_PERM, 1157 .doit = ethnl_default_doit, 1158 .start = ethnl_default_start, 1159 .dumpit = ethnl_default_dumpit, 1160 .done = ethnl_default_done, 1161 .policy = ethnl_module_eeprom_get_policy, 1162 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1163 }, 1164 { 1165 .cmd = ETHTOOL_MSG_STATS_GET, 1166 .doit = ethnl_default_doit, 1167 .start = ethnl_default_start, 1168 .dumpit = ethnl_default_dumpit, 1169 .done = ethnl_default_done, 1170 .policy = ethnl_stats_get_policy, 1171 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1172 }, 1173 { 1174 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1175 .doit = ethnl_default_doit, 1176 .start = ethnl_default_start, 1177 .dumpit = ethnl_default_dumpit, 1178 .done = ethnl_default_done, 1179 .policy = ethnl_phc_vclocks_get_policy, 1180 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1181 }, 1182 { 1183 .cmd = ETHTOOL_MSG_MODULE_GET, 1184 .doit = ethnl_default_doit, 1185 .start = ethnl_default_start, 1186 .dumpit = ethnl_default_dumpit, 1187 .done = ethnl_default_done, 1188 .policy = ethnl_module_get_policy, 1189 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1190 }, 1191 { 1192 .cmd = ETHTOOL_MSG_MODULE_SET, 1193 .flags = GENL_UNS_ADMIN_PERM, 1194 .doit = ethnl_default_set_doit, 1195 .policy = ethnl_module_set_policy, 1196 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1197 }, 1198 { 1199 .cmd = ETHTOOL_MSG_PSE_GET, 1200 .doit = ethnl_default_doit, 1201 .start = ethnl_default_start, 1202 .dumpit = ethnl_default_dumpit, 1203 .done = ethnl_default_done, 1204 .policy = ethnl_pse_get_policy, 1205 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1206 }, 1207 { 1208 .cmd = ETHTOOL_MSG_PSE_SET, 1209 .flags = GENL_UNS_ADMIN_PERM, 1210 .doit = ethnl_default_set_doit, 1211 .policy = ethnl_pse_set_policy, 1212 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1213 }, 1214 { 1215 .cmd = ETHTOOL_MSG_RSS_GET, 1216 .doit = ethnl_default_doit, 1217 .start = ethnl_rss_dump_start, 1218 .dumpit = ethnl_rss_dumpit, 1219 .policy = ethnl_rss_get_policy, 1220 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1221 }, 1222 { 1223 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1224 .doit = ethnl_default_doit, 1225 .start = ethnl_default_start, 1226 .dumpit = ethnl_default_dumpit, 1227 .done = ethnl_default_done, 1228 .policy = ethnl_plca_get_cfg_policy, 1229 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1230 }, 1231 { 1232 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1233 .flags = GENL_UNS_ADMIN_PERM, 1234 .doit = ethnl_default_set_doit, 1235 .policy = ethnl_plca_set_cfg_policy, 1236 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1237 }, 1238 { 1239 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1240 .doit = ethnl_default_doit, 1241 .start = ethnl_default_start, 1242 .dumpit = ethnl_default_dumpit, 1243 .done = ethnl_default_done, 1244 .policy = ethnl_plca_get_status_policy, 1245 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1246 }, 1247 { 1248 .cmd = ETHTOOL_MSG_MM_GET, 1249 .doit = ethnl_default_doit, 1250 .start = ethnl_default_start, 1251 .dumpit = ethnl_default_dumpit, 1252 .done = ethnl_default_done, 1253 .policy = ethnl_mm_get_policy, 1254 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1255 }, 1256 { 1257 .cmd = ETHTOOL_MSG_MM_SET, 1258 .flags = GENL_UNS_ADMIN_PERM, 1259 .doit = ethnl_default_set_doit, 1260 .policy = ethnl_mm_set_policy, 1261 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1262 }, 1263 { 1264 .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT, 1265 .flags = GENL_UNS_ADMIN_PERM, 1266 .doit = ethnl_act_module_fw_flash, 1267 .policy = ethnl_module_fw_flash_act_policy, 1268 .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1, 1269 }, 1270 { 1271 .cmd = ETHTOOL_MSG_PHY_GET, 1272 .doit = ethnl_phy_doit, 1273 .start = ethnl_phy_start, 1274 .dumpit = ethnl_phy_dumpit, 1275 .done = ethnl_phy_done, 1276 .policy = ethnl_phy_get_policy, 1277 .maxattr = ARRAY_SIZE(ethnl_phy_get_policy) - 1, 1278 }, 1279 { 1280 .cmd = ETHTOOL_MSG_TSCONFIG_GET, 1281 .doit = ethnl_default_doit, 1282 .start = ethnl_default_start, 1283 .dumpit = ethnl_default_dumpit, 1284 .done = ethnl_default_done, 1285 .policy = ethnl_tsconfig_get_policy, 1286 .maxattr = ARRAY_SIZE(ethnl_tsconfig_get_policy) - 1, 1287 }, 1288 { 1289 .cmd = ETHTOOL_MSG_TSCONFIG_SET, 1290 .flags = GENL_UNS_ADMIN_PERM, 1291 .doit = ethnl_default_set_doit, 1292 .policy = ethnl_tsconfig_set_policy, 1293 .maxattr = ARRAY_SIZE(ethnl_tsconfig_set_policy) - 1, 1294 }, 1295 }; 1296 1297 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1298 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1299 }; 1300 1301 static struct genl_family ethtool_genl_family __ro_after_init = { 1302 .name = ETHTOOL_GENL_NAME, 1303 .version = ETHTOOL_GENL_VERSION, 1304 .netnsok = true, 1305 .parallel_ops = true, 1306 .ops = ethtool_genl_ops, 1307 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1308 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1309 .mcgrps = ethtool_nl_mcgrps, 1310 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1311 .sock_priv_size = sizeof(struct ethnl_sock_priv), 1312 .sock_priv_destroy = ethnl_sock_priv_destroy, 1313 }; 1314 1315 /* module setup */ 1316 1317 static int __init ethnl_init(void) 1318 { 1319 int ret; 1320 1321 ret = genl_register_family(ðtool_genl_family); 1322 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1323 return ret; 1324 ethnl_ok = true; 1325 1326 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1327 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1328 return ret; 1329 } 1330 1331 subsys_initcall(ethnl_init); 1332