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