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