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