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 /** 361 * struct ethnl_perphy_dump_ctx - context for dumpit() PHY-aware callbacks 362 * @ethnl_ctx: generic ethnl context 363 * @ifindex: For Filtered DUMP requests, the ifindex of the targeted netdev 364 * @pos_phyindex: iterator position for multi-msg DUMP 365 */ 366 struct ethnl_perphy_dump_ctx { 367 struct ethnl_dump_ctx ethnl_ctx; 368 unsigned int ifindex; 369 unsigned long pos_phyindex; 370 }; 371 372 static const struct ethnl_request_ops * 373 ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { 374 [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, 375 [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, 376 [ETHTOOL_MSG_LINKINFO_SET] = ðnl_linkinfo_request_ops, 377 [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, 378 [ETHTOOL_MSG_LINKMODES_SET] = ðnl_linkmodes_request_ops, 379 [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, 380 [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, 381 [ETHTOOL_MSG_DEBUG_SET] = ðnl_debug_request_ops, 382 [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, 383 [ETHTOOL_MSG_WOL_SET] = ðnl_wol_request_ops, 384 [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, 385 [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, 386 [ETHTOOL_MSG_PRIVFLAGS_SET] = ðnl_privflags_request_ops, 387 [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, 388 [ETHTOOL_MSG_RINGS_SET] = ðnl_rings_request_ops, 389 [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, 390 [ETHTOOL_MSG_CHANNELS_SET] = ðnl_channels_request_ops, 391 [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, 392 [ETHTOOL_MSG_COALESCE_SET] = ðnl_coalesce_request_ops, 393 [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, 394 [ETHTOOL_MSG_PAUSE_SET] = ðnl_pause_request_ops, 395 [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, 396 [ETHTOOL_MSG_EEE_SET] = ðnl_eee_request_ops, 397 [ETHTOOL_MSG_FEC_GET] = ðnl_fec_request_ops, 398 [ETHTOOL_MSG_FEC_SET] = ðnl_fec_request_ops, 399 [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, 400 [ETHTOOL_MSG_MODULE_EEPROM_GET] = ðnl_module_eeprom_request_ops, 401 [ETHTOOL_MSG_STATS_GET] = ðnl_stats_request_ops, 402 [ETHTOOL_MSG_PHC_VCLOCKS_GET] = ðnl_phc_vclocks_request_ops, 403 [ETHTOOL_MSG_MODULE_GET] = ðnl_module_request_ops, 404 [ETHTOOL_MSG_MODULE_SET] = ðnl_module_request_ops, 405 [ETHTOOL_MSG_PSE_GET] = ðnl_pse_request_ops, 406 [ETHTOOL_MSG_PSE_SET] = ðnl_pse_request_ops, 407 [ETHTOOL_MSG_RSS_GET] = ðnl_rss_request_ops, 408 [ETHTOOL_MSG_PLCA_GET_CFG] = ðnl_plca_cfg_request_ops, 409 [ETHTOOL_MSG_PLCA_SET_CFG] = ðnl_plca_cfg_request_ops, 410 [ETHTOOL_MSG_PLCA_GET_STATUS] = ðnl_plca_status_request_ops, 411 [ETHTOOL_MSG_MM_GET] = ðnl_mm_request_ops, 412 [ETHTOOL_MSG_MM_SET] = ðnl_mm_request_ops, 413 [ETHTOOL_MSG_TSCONFIG_GET] = ðnl_tsconfig_request_ops, 414 [ETHTOOL_MSG_TSCONFIG_SET] = ðnl_tsconfig_request_ops, 415 [ETHTOOL_MSG_PHY_GET] = ðnl_phy_request_ops, 416 }; 417 418 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) 419 { 420 return (struct ethnl_dump_ctx *)cb->ctx; 421 } 422 423 static struct ethnl_perphy_dump_ctx * 424 ethnl_perphy_dump_context(struct netlink_callback *cb) 425 { 426 return (struct ethnl_perphy_dump_ctx *)cb->ctx; 427 } 428 429 /** 430 * ethnl_default_parse() - Parse request message 431 * @req_info: pointer to structure to put data into 432 * @info: genl_info from the request 433 * @request_ops: struct request_ops for request type 434 * @require_dev: fail if no device identified in header 435 * 436 * Parse universal request header and call request specific ->parse_request() 437 * callback (if defined) to parse the rest of the message. 438 * 439 * Return: 0 on success or negative error code 440 */ 441 static int ethnl_default_parse(struct ethnl_req_info *req_info, 442 const struct genl_info *info, 443 const struct ethnl_request_ops *request_ops, 444 bool require_dev) 445 { 446 struct nlattr **tb = info->attrs; 447 int ret; 448 449 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], 450 genl_info_net(info), info->extack, 451 require_dev); 452 if (ret < 0) 453 return ret; 454 455 if (request_ops->parse_request) { 456 ret = request_ops->parse_request(req_info, tb, info->extack); 457 if (ret < 0) 458 return ret; 459 } 460 461 return 0; 462 } 463 464 /** 465 * ethnl_init_reply_data() - Initialize reply data for GET request 466 * @reply_data: pointer to embedded struct ethnl_reply_data 467 * @ops: instance of struct ethnl_request_ops describing the layout 468 * @dev: network device to initialize the reply for 469 * 470 * Fills the reply data part with zeros and sets the dev member. Must be called 471 * before calling the ->fill_reply() callback (for each iteration when handling 472 * dump requests). 473 */ 474 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, 475 const struct ethnl_request_ops *ops, 476 struct net_device *dev) 477 { 478 memset(reply_data, 0, ops->reply_data_size); 479 reply_data->dev = dev; 480 } 481 482 /* default ->doit() handler for GET type requests */ 483 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) 484 { 485 struct ethnl_reply_data *reply_data = NULL; 486 struct ethnl_req_info *req_info = NULL; 487 const u8 cmd = info->genlhdr->cmd; 488 const struct ethnl_request_ops *ops; 489 int hdr_len, reply_len; 490 struct sk_buff *rskb; 491 void *reply_payload; 492 int ret; 493 494 ops = ethnl_default_requests[cmd]; 495 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 496 return -EOPNOTSUPP; 497 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 498 return -EINVAL; 499 500 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 501 if (!req_info) 502 return -ENOMEM; 503 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 504 if (!reply_data) { 505 kfree(req_info); 506 return -ENOMEM; 507 } 508 509 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); 510 if (ret < 0) 511 goto err_dev; 512 ethnl_init_reply_data(reply_data, ops, req_info->dev); 513 514 rtnl_lock(); 515 if (req_info->dev) 516 netdev_lock_ops(req_info->dev); 517 ret = ops->prepare_data(req_info, reply_data, info); 518 if (req_info->dev) 519 netdev_unlock_ops(req_info->dev); 520 rtnl_unlock(); 521 if (ret < 0) 522 goto err_dev; 523 ret = ops->reply_size(req_info, reply_data); 524 if (ret < 0) 525 goto err_cleanup; 526 reply_len = ret; 527 ret = -ENOMEM; 528 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), 529 req_info->dev, ops->reply_cmd, 530 ops->hdr_attr, info, &reply_payload); 531 if (!rskb) 532 goto err_cleanup; 533 hdr_len = rskb->len; 534 ret = ops->fill_reply(rskb, req_info, reply_data); 535 if (ret < 0) 536 goto err_msg; 537 WARN_ONCE(rskb->len - hdr_len > reply_len, 538 "ethnl cmd %d: calculated reply length %d, but consumed %d\n", 539 cmd, reply_len, rskb->len - hdr_len); 540 if (ops->cleanup_data) 541 ops->cleanup_data(reply_data); 542 543 genlmsg_end(rskb, reply_payload); 544 netdev_put(req_info->dev, &req_info->dev_tracker); 545 kfree(reply_data); 546 kfree(req_info); 547 return genlmsg_reply(rskb, info); 548 549 err_msg: 550 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); 551 nlmsg_free(rskb); 552 err_cleanup: 553 if (ops->cleanup_data) 554 ops->cleanup_data(reply_data); 555 err_dev: 556 netdev_put(req_info->dev, &req_info->dev_tracker); 557 kfree(reply_data); 558 kfree(req_info); 559 return ret; 560 } 561 562 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, 563 const struct ethnl_dump_ctx *ctx, 564 const struct genl_info *info) 565 { 566 void *ehdr; 567 int ret; 568 569 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 570 ðtool_genl_family, NLM_F_MULTI, 571 ctx->ops->reply_cmd); 572 if (!ehdr) 573 return -EMSGSIZE; 574 575 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); 576 rtnl_lock(); 577 netdev_lock_ops(dev); 578 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); 579 netdev_unlock_ops(dev); 580 rtnl_unlock(); 581 if (ret < 0) 582 goto out_cancel; 583 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); 584 if (ret < 0) 585 goto out; 586 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); 587 588 out: 589 if (ctx->ops->cleanup_data) 590 ctx->ops->cleanup_data(ctx->reply_data); 591 out_cancel: 592 ctx->reply_data->dev = NULL; 593 if (ret < 0) 594 genlmsg_cancel(skb, ehdr); 595 else 596 genlmsg_end(skb, ehdr); 597 return ret; 598 } 599 600 /* Default ->dumpit() handler for GET requests. */ 601 static int ethnl_default_dumpit(struct sk_buff *skb, 602 struct netlink_callback *cb) 603 { 604 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 605 struct net *net = sock_net(skb->sk); 606 netdevice_tracker dev_tracker; 607 struct net_device *dev; 608 int ret = 0; 609 610 rcu_read_lock(); 611 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 612 netdev_hold(dev, &dev_tracker, GFP_ATOMIC); 613 rcu_read_unlock(); 614 615 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 616 617 rcu_read_lock(); 618 netdev_put(dev, &dev_tracker); 619 620 if (ret < 0 && ret != -EOPNOTSUPP) { 621 if (likely(skb->len)) 622 ret = skb->len; 623 break; 624 } 625 ret = 0; 626 } 627 rcu_read_unlock(); 628 629 return ret; 630 } 631 632 /* generic ->start() handler for GET requests */ 633 static int ethnl_default_start(struct netlink_callback *cb) 634 { 635 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 636 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 637 struct ethnl_reply_data *reply_data; 638 const struct ethnl_request_ops *ops; 639 struct ethnl_req_info *req_info; 640 struct genlmsghdr *ghdr; 641 int ret; 642 643 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 644 645 ghdr = nlmsg_data(cb->nlh); 646 ops = ethnl_default_requests[ghdr->cmd]; 647 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 648 return -EOPNOTSUPP; 649 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 650 if (!req_info) 651 return -ENOMEM; 652 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 653 if (!reply_data) { 654 ret = -ENOMEM; 655 goto free_req_info; 656 } 657 658 ret = ethnl_default_parse(req_info, &info->info, ops, false); 659 if (req_info->dev) { 660 /* We ignore device specification in dump requests but as the 661 * same parser as for non-dump (doit) requests is used, it 662 * would take reference to the device if it finds one 663 */ 664 netdev_put(req_info->dev, &req_info->dev_tracker); 665 req_info->dev = NULL; 666 } 667 if (ret < 0) 668 goto free_reply_data; 669 670 ctx->ops = ops; 671 ctx->req_info = req_info; 672 ctx->reply_data = reply_data; 673 ctx->pos_ifindex = 0; 674 675 return 0; 676 677 free_reply_data: 678 kfree(reply_data); 679 free_req_info: 680 kfree(req_info); 681 682 return ret; 683 } 684 685 /* per-PHY ->start() handler for GET requests */ 686 static int ethnl_perphy_start(struct netlink_callback *cb) 687 { 688 struct ethnl_perphy_dump_ctx *phy_ctx = ethnl_perphy_dump_context(cb); 689 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 690 struct ethnl_dump_ctx *ctx = &phy_ctx->ethnl_ctx; 691 struct ethnl_reply_data *reply_data; 692 const struct ethnl_request_ops *ops; 693 struct ethnl_req_info *req_info; 694 struct genlmsghdr *ghdr; 695 int ret; 696 697 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 698 699 ghdr = nlmsg_data(cb->nlh); 700 ops = ethnl_default_requests[ghdr->cmd]; 701 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 702 return -EOPNOTSUPP; 703 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 704 if (!req_info) 705 return -ENOMEM; 706 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 707 if (!reply_data) { 708 ret = -ENOMEM; 709 goto free_req_info; 710 } 711 712 /* Unlike per-dev dump, don't ignore dev. The dump handler 713 * will notice it and dump PHYs from given dev. We only keep track of 714 * the dev's ifindex, .dumpit() will grab and release the netdev itself. 715 */ 716 ret = ethnl_default_parse(req_info, &info->info, ops, false); 717 if (req_info->dev) { 718 phy_ctx->ifindex = req_info->dev->ifindex; 719 netdev_put(req_info->dev, &req_info->dev_tracker); 720 req_info->dev = NULL; 721 } 722 if (ret < 0) 723 goto free_reply_data; 724 725 ctx->ops = ops; 726 ctx->req_info = req_info; 727 ctx->reply_data = reply_data; 728 ctx->pos_ifindex = 0; 729 730 return 0; 731 732 free_reply_data: 733 kfree(reply_data); 734 free_req_info: 735 kfree(req_info); 736 737 return ret; 738 } 739 740 static int ethnl_perphy_dump_one_dev(struct sk_buff *skb, 741 struct ethnl_perphy_dump_ctx *ctx, 742 const struct genl_info *info) 743 { 744 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 745 struct net_device *dev = ethnl_ctx->req_info->dev; 746 struct phy_device_node *pdn; 747 int ret; 748 749 if (!dev->link_topo) 750 return 0; 751 752 xa_for_each_start(&dev->link_topo->phys, ctx->pos_phyindex, pdn, 753 ctx->pos_phyindex) { 754 ethnl_ctx->req_info->phy_index = ctx->pos_phyindex; 755 756 /* We can re-use the original dump_one as ->prepare_data in 757 * commands use ethnl_req_get_phydev(), which gets the PHY from 758 * the req_info->phy_index 759 */ 760 ret = ethnl_default_dump_one(skb, dev, ethnl_ctx, info); 761 if (ret) 762 return ret; 763 } 764 765 ctx->pos_phyindex = 0; 766 767 return 0; 768 } 769 770 static int ethnl_perphy_dump_all_dev(struct sk_buff *skb, 771 struct ethnl_perphy_dump_ctx *ctx, 772 const struct genl_info *info) 773 { 774 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 775 struct net *net = sock_net(skb->sk); 776 netdevice_tracker dev_tracker; 777 struct net_device *dev; 778 int ret = 0; 779 780 rcu_read_lock(); 781 for_each_netdev_dump(net, dev, ethnl_ctx->pos_ifindex) { 782 netdev_hold(dev, &dev_tracker, GFP_ATOMIC); 783 rcu_read_unlock(); 784 785 /* per-PHY commands use ethnl_req_get_phydev(), which needs the 786 * net_device in the req_info 787 */ 788 ethnl_ctx->req_info->dev = dev; 789 ret = ethnl_perphy_dump_one_dev(skb, ctx, info); 790 791 rcu_read_lock(); 792 netdev_put(dev, &dev_tracker); 793 ethnl_ctx->req_info->dev = NULL; 794 795 if (ret < 0 && ret != -EOPNOTSUPP) { 796 if (likely(skb->len)) 797 ret = skb->len; 798 break; 799 } 800 ret = 0; 801 } 802 rcu_read_unlock(); 803 804 return ret; 805 } 806 807 /* per-PHY ->dumpit() handler for GET requests. */ 808 static int ethnl_perphy_dumpit(struct sk_buff *skb, 809 struct netlink_callback *cb) 810 { 811 struct ethnl_perphy_dump_ctx *ctx = ethnl_perphy_dump_context(cb); 812 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 813 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 814 int ret = 0; 815 816 if (ctx->ifindex) { 817 netdevice_tracker dev_tracker; 818 struct net_device *dev; 819 820 dev = netdev_get_by_index(genl_info_net(&info->info), 821 ctx->ifindex, &dev_tracker, 822 GFP_KERNEL); 823 if (!dev) 824 return -ENODEV; 825 826 ethnl_ctx->req_info->dev = dev; 827 ret = ethnl_perphy_dump_one_dev(skb, ctx, genl_info_dump(cb)); 828 829 if (ret < 0 && ret != -EOPNOTSUPP && likely(skb->len)) 830 ret = skb->len; 831 832 netdev_put(dev, &dev_tracker); 833 } else { 834 ret = ethnl_perphy_dump_all_dev(skb, ctx, genl_info_dump(cb)); 835 } 836 837 return ret; 838 } 839 840 /* per-PHY ->done() handler for GET requests */ 841 static int ethnl_perphy_done(struct netlink_callback *cb) 842 { 843 struct ethnl_perphy_dump_ctx *ctx = ethnl_perphy_dump_context(cb); 844 struct ethnl_dump_ctx *ethnl_ctx = &ctx->ethnl_ctx; 845 846 kfree(ethnl_ctx->reply_data); 847 kfree(ethnl_ctx->req_info); 848 849 return 0; 850 } 851 852 /* default ->done() handler for GET requests */ 853 static int ethnl_default_done(struct netlink_callback *cb) 854 { 855 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 856 857 kfree(ctx->reply_data); 858 kfree(ctx->req_info); 859 860 return 0; 861 } 862 863 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 864 { 865 const struct ethnl_request_ops *ops; 866 struct ethnl_req_info req_info = {}; 867 const u8 cmd = info->genlhdr->cmd; 868 struct net_device *dev; 869 int ret; 870 871 ops = ethnl_default_requests[cmd]; 872 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 873 return -EOPNOTSUPP; 874 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 875 return -EINVAL; 876 877 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr], 878 genl_info_net(info), info->extack, 879 true); 880 if (ret < 0) 881 return ret; 882 883 if (ops->set_validate) { 884 ret = ops->set_validate(&req_info, info); 885 /* 0 means nothing to do */ 886 if (ret <= 0) 887 goto out_dev; 888 } 889 890 dev = req_info.dev; 891 892 rtnl_lock(); 893 netdev_lock_ops(dev); 894 dev->cfg_pending = kmemdup(dev->cfg, sizeof(*dev->cfg), 895 GFP_KERNEL_ACCOUNT); 896 if (!dev->cfg_pending) { 897 ret = -ENOMEM; 898 goto out_tie_cfg; 899 } 900 901 ret = ethnl_ops_begin(dev); 902 if (ret < 0) 903 goto out_free_cfg; 904 905 ret = ops->set(&req_info, info); 906 if (ret < 0) 907 goto out_ops; 908 909 swap(dev->cfg, dev->cfg_pending); 910 if (!ret) 911 goto out_ops; 912 ethtool_notify(dev, ops->set_ntf_cmd, NULL); 913 914 ret = 0; 915 out_ops: 916 ethnl_ops_complete(dev); 917 out_free_cfg: 918 kfree(dev->cfg_pending); 919 out_tie_cfg: 920 dev->cfg_pending = dev->cfg; 921 netdev_unlock_ops(dev); 922 rtnl_unlock(); 923 out_dev: 924 ethnl_parse_header_dev_put(&req_info); 925 return ret; 926 } 927 928 static const struct ethnl_request_ops * 929 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 930 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 931 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 932 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 933 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 934 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 935 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 936 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 937 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 938 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 939 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 940 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 941 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 942 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 943 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 944 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 945 }; 946 947 /* default notification handler */ 948 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 949 const void *data) 950 { 951 struct ethnl_reply_data *reply_data; 952 const struct ethnl_request_ops *ops; 953 struct ethnl_req_info *req_info; 954 struct genl_info info; 955 struct sk_buff *skb; 956 void *reply_payload; 957 int reply_len; 958 int ret; 959 960 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 961 962 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 963 !ethnl_default_notify_ops[cmd], 964 "unexpected notification type %u\n", cmd)) 965 return; 966 ops = ethnl_default_notify_ops[cmd]; 967 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 968 if (!req_info) 969 return; 970 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 971 if (!reply_data) { 972 kfree(req_info); 973 return; 974 } 975 976 req_info->dev = dev; 977 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 978 979 netdev_ops_assert_locked(dev); 980 981 ethnl_init_reply_data(reply_data, ops, dev); 982 ret = ops->prepare_data(req_info, reply_data, &info); 983 if (ret < 0) 984 goto err_rep; 985 ret = ops->reply_size(req_info, reply_data); 986 if (ret < 0) 987 goto err_cleanup; 988 reply_len = ret + ethnl_reply_header_size(); 989 skb = genlmsg_new(reply_len, GFP_KERNEL); 990 if (!skb) 991 goto err_cleanup; 992 reply_payload = ethnl_bcastmsg_put(skb, cmd); 993 if (!reply_payload) 994 goto err_skb; 995 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 996 if (ret < 0) 997 goto err_msg; 998 ret = ops->fill_reply(skb, req_info, reply_data); 999 if (ret < 0) 1000 goto err_msg; 1001 if (ops->cleanup_data) 1002 ops->cleanup_data(reply_data); 1003 1004 genlmsg_end(skb, reply_payload); 1005 kfree(reply_data); 1006 kfree(req_info); 1007 ethnl_multicast(skb, dev); 1008 return; 1009 1010 err_msg: 1011 WARN_ONCE(ret == -EMSGSIZE, 1012 "calculated message payload length (%d) not sufficient\n", 1013 reply_len); 1014 err_skb: 1015 nlmsg_free(skb); 1016 err_cleanup: 1017 if (ops->cleanup_data) 1018 ops->cleanup_data(reply_data); 1019 err_rep: 1020 kfree(reply_data); 1021 kfree(req_info); 1022 return; 1023 } 1024 1025 /* notifications */ 1026 1027 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 1028 const void *data); 1029 1030 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 1031 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 1032 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 1033 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 1034 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 1035 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 1036 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 1037 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 1038 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 1039 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 1040 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 1041 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 1042 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 1043 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 1044 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 1045 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 1046 }; 1047 1048 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) 1049 { 1050 if (unlikely(!ethnl_ok)) 1051 return; 1052 ASSERT_RTNL(); 1053 1054 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 1055 ethnl_notify_handlers[cmd])) 1056 ethnl_notify_handlers[cmd](dev, cmd, data); 1057 else 1058 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 1059 cmd, netdev_name(dev)); 1060 } 1061 EXPORT_SYMBOL(ethtool_notify); 1062 1063 static void ethnl_notify_features(struct netdev_notifier_info *info) 1064 { 1065 struct net_device *dev = netdev_notifier_info_to_dev(info); 1066 1067 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); 1068 } 1069 1070 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 1071 void *ptr) 1072 { 1073 struct netdev_notifier_info *info = ptr; 1074 struct netlink_ext_ack *extack; 1075 struct net_device *dev; 1076 1077 dev = netdev_notifier_info_to_dev(info); 1078 extack = netdev_notifier_info_to_extack(info); 1079 1080 switch (event) { 1081 case NETDEV_FEAT_CHANGE: 1082 ethnl_notify_features(ptr); 1083 break; 1084 case NETDEV_PRE_UP: 1085 if (dev->ethtool->module_fw_flash_in_progress) { 1086 NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware"); 1087 return NOTIFY_BAD; 1088 } 1089 } 1090 1091 return NOTIFY_DONE; 1092 } 1093 1094 static struct notifier_block ethnl_netdev_notifier = { 1095 .notifier_call = ethnl_netdev_event, 1096 }; 1097 1098 /* genetlink setup */ 1099 1100 static const struct genl_ops ethtool_genl_ops[] = { 1101 { 1102 .cmd = ETHTOOL_MSG_STRSET_GET, 1103 .doit = ethnl_default_doit, 1104 .start = ethnl_default_start, 1105 .dumpit = ethnl_default_dumpit, 1106 .done = ethnl_default_done, 1107 .policy = ethnl_strset_get_policy, 1108 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 1109 }, 1110 { 1111 .cmd = ETHTOOL_MSG_LINKINFO_GET, 1112 .doit = ethnl_default_doit, 1113 .start = ethnl_default_start, 1114 .dumpit = ethnl_default_dumpit, 1115 .done = ethnl_default_done, 1116 .policy = ethnl_linkinfo_get_policy, 1117 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 1118 }, 1119 { 1120 .cmd = ETHTOOL_MSG_LINKINFO_SET, 1121 .flags = GENL_UNS_ADMIN_PERM, 1122 .doit = ethnl_default_set_doit, 1123 .policy = ethnl_linkinfo_set_policy, 1124 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 1125 }, 1126 { 1127 .cmd = ETHTOOL_MSG_LINKMODES_GET, 1128 .doit = ethnl_default_doit, 1129 .start = ethnl_default_start, 1130 .dumpit = ethnl_default_dumpit, 1131 .done = ethnl_default_done, 1132 .policy = ethnl_linkmodes_get_policy, 1133 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 1134 }, 1135 { 1136 .cmd = ETHTOOL_MSG_LINKMODES_SET, 1137 .flags = GENL_UNS_ADMIN_PERM, 1138 .doit = ethnl_default_set_doit, 1139 .policy = ethnl_linkmodes_set_policy, 1140 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 1141 }, 1142 { 1143 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 1144 .doit = ethnl_default_doit, 1145 .start = ethnl_default_start, 1146 .dumpit = ethnl_default_dumpit, 1147 .done = ethnl_default_done, 1148 .policy = ethnl_linkstate_get_policy, 1149 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 1150 }, 1151 { 1152 .cmd = ETHTOOL_MSG_DEBUG_GET, 1153 .doit = ethnl_default_doit, 1154 .start = ethnl_default_start, 1155 .dumpit = ethnl_default_dumpit, 1156 .done = ethnl_default_done, 1157 .policy = ethnl_debug_get_policy, 1158 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 1159 }, 1160 { 1161 .cmd = ETHTOOL_MSG_DEBUG_SET, 1162 .flags = GENL_UNS_ADMIN_PERM, 1163 .doit = ethnl_default_set_doit, 1164 .policy = ethnl_debug_set_policy, 1165 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 1166 }, 1167 { 1168 .cmd = ETHTOOL_MSG_WOL_GET, 1169 .flags = GENL_UNS_ADMIN_PERM, 1170 .doit = ethnl_default_doit, 1171 .start = ethnl_default_start, 1172 .dumpit = ethnl_default_dumpit, 1173 .done = ethnl_default_done, 1174 .policy = ethnl_wol_get_policy, 1175 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 1176 }, 1177 { 1178 .cmd = ETHTOOL_MSG_WOL_SET, 1179 .flags = GENL_UNS_ADMIN_PERM, 1180 .doit = ethnl_default_set_doit, 1181 .policy = ethnl_wol_set_policy, 1182 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 1183 }, 1184 { 1185 .cmd = ETHTOOL_MSG_FEATURES_GET, 1186 .doit = ethnl_default_doit, 1187 .start = ethnl_default_start, 1188 .dumpit = ethnl_default_dumpit, 1189 .done = ethnl_default_done, 1190 .policy = ethnl_features_get_policy, 1191 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 1192 }, 1193 { 1194 .cmd = ETHTOOL_MSG_FEATURES_SET, 1195 .flags = GENL_UNS_ADMIN_PERM, 1196 .doit = ethnl_set_features, 1197 .policy = ethnl_features_set_policy, 1198 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 1199 }, 1200 { 1201 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 1202 .doit = ethnl_default_doit, 1203 .start = ethnl_default_start, 1204 .dumpit = ethnl_default_dumpit, 1205 .done = ethnl_default_done, 1206 .policy = ethnl_privflags_get_policy, 1207 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 1208 }, 1209 { 1210 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 1211 .flags = GENL_UNS_ADMIN_PERM, 1212 .doit = ethnl_default_set_doit, 1213 .policy = ethnl_privflags_set_policy, 1214 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 1215 }, 1216 { 1217 .cmd = ETHTOOL_MSG_RINGS_GET, 1218 .doit = ethnl_default_doit, 1219 .start = ethnl_default_start, 1220 .dumpit = ethnl_default_dumpit, 1221 .done = ethnl_default_done, 1222 .policy = ethnl_rings_get_policy, 1223 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 1224 }, 1225 { 1226 .cmd = ETHTOOL_MSG_RINGS_SET, 1227 .flags = GENL_UNS_ADMIN_PERM, 1228 .doit = ethnl_default_set_doit, 1229 .policy = ethnl_rings_set_policy, 1230 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 1231 }, 1232 { 1233 .cmd = ETHTOOL_MSG_CHANNELS_GET, 1234 .doit = ethnl_default_doit, 1235 .start = ethnl_default_start, 1236 .dumpit = ethnl_default_dumpit, 1237 .done = ethnl_default_done, 1238 .policy = ethnl_channels_get_policy, 1239 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 1240 }, 1241 { 1242 .cmd = ETHTOOL_MSG_CHANNELS_SET, 1243 .flags = GENL_UNS_ADMIN_PERM, 1244 .doit = ethnl_default_set_doit, 1245 .policy = ethnl_channels_set_policy, 1246 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 1247 }, 1248 { 1249 .cmd = ETHTOOL_MSG_COALESCE_GET, 1250 .doit = ethnl_default_doit, 1251 .start = ethnl_default_start, 1252 .dumpit = ethnl_default_dumpit, 1253 .done = ethnl_default_done, 1254 .policy = ethnl_coalesce_get_policy, 1255 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 1256 }, 1257 { 1258 .cmd = ETHTOOL_MSG_COALESCE_SET, 1259 .flags = GENL_UNS_ADMIN_PERM, 1260 .doit = ethnl_default_set_doit, 1261 .policy = ethnl_coalesce_set_policy, 1262 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 1263 }, 1264 { 1265 .cmd = ETHTOOL_MSG_PAUSE_GET, 1266 .doit = ethnl_default_doit, 1267 .start = ethnl_default_start, 1268 .dumpit = ethnl_default_dumpit, 1269 .done = ethnl_default_done, 1270 .policy = ethnl_pause_get_policy, 1271 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 1272 }, 1273 { 1274 .cmd = ETHTOOL_MSG_PAUSE_SET, 1275 .flags = GENL_UNS_ADMIN_PERM, 1276 .doit = ethnl_default_set_doit, 1277 .policy = ethnl_pause_set_policy, 1278 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 1279 }, 1280 { 1281 .cmd = ETHTOOL_MSG_EEE_GET, 1282 .doit = ethnl_default_doit, 1283 .start = ethnl_default_start, 1284 .dumpit = ethnl_default_dumpit, 1285 .done = ethnl_default_done, 1286 .policy = ethnl_eee_get_policy, 1287 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 1288 }, 1289 { 1290 .cmd = ETHTOOL_MSG_EEE_SET, 1291 .flags = GENL_UNS_ADMIN_PERM, 1292 .doit = ethnl_default_set_doit, 1293 .policy = ethnl_eee_set_policy, 1294 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 1295 }, 1296 { 1297 .cmd = ETHTOOL_MSG_TSINFO_GET, 1298 .doit = ethnl_default_doit, 1299 .start = ethnl_tsinfo_start, 1300 .dumpit = ethnl_tsinfo_dumpit, 1301 .done = ethnl_tsinfo_done, 1302 .policy = ethnl_tsinfo_get_policy, 1303 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 1304 }, 1305 { 1306 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 1307 .flags = GENL_UNS_ADMIN_PERM, 1308 .doit = ethnl_act_cable_test, 1309 .policy = ethnl_cable_test_act_policy, 1310 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 1311 }, 1312 { 1313 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 1314 .flags = GENL_UNS_ADMIN_PERM, 1315 .doit = ethnl_act_cable_test_tdr, 1316 .policy = ethnl_cable_test_tdr_act_policy, 1317 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 1318 }, 1319 { 1320 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1321 .doit = ethnl_tunnel_info_doit, 1322 .start = ethnl_tunnel_info_start, 1323 .dumpit = ethnl_tunnel_info_dumpit, 1324 .policy = ethnl_tunnel_info_get_policy, 1325 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1326 }, 1327 { 1328 .cmd = ETHTOOL_MSG_FEC_GET, 1329 .doit = ethnl_default_doit, 1330 .start = ethnl_default_start, 1331 .dumpit = ethnl_default_dumpit, 1332 .done = ethnl_default_done, 1333 .policy = ethnl_fec_get_policy, 1334 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1335 }, 1336 { 1337 .cmd = ETHTOOL_MSG_FEC_SET, 1338 .flags = GENL_UNS_ADMIN_PERM, 1339 .doit = ethnl_default_set_doit, 1340 .policy = ethnl_fec_set_policy, 1341 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1342 }, 1343 { 1344 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1345 .flags = GENL_UNS_ADMIN_PERM, 1346 .doit = ethnl_default_doit, 1347 .start = ethnl_default_start, 1348 .dumpit = ethnl_default_dumpit, 1349 .done = ethnl_default_done, 1350 .policy = ethnl_module_eeprom_get_policy, 1351 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1352 }, 1353 { 1354 .cmd = ETHTOOL_MSG_STATS_GET, 1355 .doit = ethnl_default_doit, 1356 .start = ethnl_default_start, 1357 .dumpit = ethnl_default_dumpit, 1358 .done = ethnl_default_done, 1359 .policy = ethnl_stats_get_policy, 1360 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1361 }, 1362 { 1363 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1364 .doit = ethnl_default_doit, 1365 .start = ethnl_default_start, 1366 .dumpit = ethnl_default_dumpit, 1367 .done = ethnl_default_done, 1368 .policy = ethnl_phc_vclocks_get_policy, 1369 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1370 }, 1371 { 1372 .cmd = ETHTOOL_MSG_MODULE_GET, 1373 .doit = ethnl_default_doit, 1374 .start = ethnl_default_start, 1375 .dumpit = ethnl_default_dumpit, 1376 .done = ethnl_default_done, 1377 .policy = ethnl_module_get_policy, 1378 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1379 }, 1380 { 1381 .cmd = ETHTOOL_MSG_MODULE_SET, 1382 .flags = GENL_UNS_ADMIN_PERM, 1383 .doit = ethnl_default_set_doit, 1384 .policy = ethnl_module_set_policy, 1385 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1386 }, 1387 { 1388 .cmd = ETHTOOL_MSG_PSE_GET, 1389 .doit = ethnl_default_doit, 1390 .start = ethnl_perphy_start, 1391 .dumpit = ethnl_perphy_dumpit, 1392 .done = ethnl_perphy_done, 1393 .policy = ethnl_pse_get_policy, 1394 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1395 }, 1396 { 1397 .cmd = ETHTOOL_MSG_PSE_SET, 1398 .flags = GENL_UNS_ADMIN_PERM, 1399 .doit = ethnl_default_set_doit, 1400 .policy = ethnl_pse_set_policy, 1401 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1402 }, 1403 { 1404 .cmd = ETHTOOL_MSG_RSS_GET, 1405 .doit = ethnl_default_doit, 1406 .start = ethnl_rss_dump_start, 1407 .dumpit = ethnl_rss_dumpit, 1408 .policy = ethnl_rss_get_policy, 1409 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1410 }, 1411 { 1412 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1413 .doit = ethnl_default_doit, 1414 .start = ethnl_perphy_start, 1415 .dumpit = ethnl_perphy_dumpit, 1416 .done = ethnl_perphy_done, 1417 .policy = ethnl_plca_get_cfg_policy, 1418 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1419 }, 1420 { 1421 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1422 .flags = GENL_UNS_ADMIN_PERM, 1423 .doit = ethnl_default_set_doit, 1424 .policy = ethnl_plca_set_cfg_policy, 1425 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1426 }, 1427 { 1428 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1429 .doit = ethnl_default_doit, 1430 .start = ethnl_perphy_start, 1431 .dumpit = ethnl_perphy_dumpit, 1432 .done = ethnl_perphy_done, 1433 .policy = ethnl_plca_get_status_policy, 1434 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1435 }, 1436 { 1437 .cmd = ETHTOOL_MSG_MM_GET, 1438 .doit = ethnl_default_doit, 1439 .start = ethnl_default_start, 1440 .dumpit = ethnl_default_dumpit, 1441 .done = ethnl_default_done, 1442 .policy = ethnl_mm_get_policy, 1443 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1444 }, 1445 { 1446 .cmd = ETHTOOL_MSG_MM_SET, 1447 .flags = GENL_UNS_ADMIN_PERM, 1448 .doit = ethnl_default_set_doit, 1449 .policy = ethnl_mm_set_policy, 1450 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1451 }, 1452 { 1453 .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT, 1454 .flags = GENL_UNS_ADMIN_PERM, 1455 .doit = ethnl_act_module_fw_flash, 1456 .policy = ethnl_module_fw_flash_act_policy, 1457 .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1, 1458 }, 1459 { 1460 .cmd = ETHTOOL_MSG_PHY_GET, 1461 .doit = ethnl_default_doit, 1462 .start = ethnl_perphy_start, 1463 .dumpit = ethnl_perphy_dumpit, 1464 .done = ethnl_perphy_done, 1465 .policy = ethnl_phy_get_policy, 1466 .maxattr = ARRAY_SIZE(ethnl_phy_get_policy) - 1, 1467 }, 1468 { 1469 .cmd = ETHTOOL_MSG_TSCONFIG_GET, 1470 .doit = ethnl_default_doit, 1471 .start = ethnl_default_start, 1472 .dumpit = ethnl_default_dumpit, 1473 .done = ethnl_default_done, 1474 .policy = ethnl_tsconfig_get_policy, 1475 .maxattr = ARRAY_SIZE(ethnl_tsconfig_get_policy) - 1, 1476 }, 1477 { 1478 .cmd = ETHTOOL_MSG_TSCONFIG_SET, 1479 .flags = GENL_UNS_ADMIN_PERM, 1480 .doit = ethnl_default_set_doit, 1481 .policy = ethnl_tsconfig_set_policy, 1482 .maxattr = ARRAY_SIZE(ethnl_tsconfig_set_policy) - 1, 1483 }, 1484 }; 1485 1486 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1487 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1488 }; 1489 1490 static struct genl_family ethtool_genl_family __ro_after_init = { 1491 .name = ETHTOOL_GENL_NAME, 1492 .version = ETHTOOL_GENL_VERSION, 1493 .netnsok = true, 1494 .parallel_ops = true, 1495 .ops = ethtool_genl_ops, 1496 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1497 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1498 .mcgrps = ethtool_nl_mcgrps, 1499 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1500 .sock_priv_size = sizeof(struct ethnl_sock_priv), 1501 .sock_priv_destroy = ethnl_sock_priv_destroy, 1502 }; 1503 1504 /* module setup */ 1505 1506 static int __init ethnl_init(void) 1507 { 1508 int ret; 1509 1510 ret = genl_register_family(ðtool_genl_family); 1511 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1512 return ret; 1513 ethnl_ok = true; 1514 1515 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1516 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1517 return ret; 1518 } 1519 1520 subsys_initcall(ethnl_init); 1521