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 }; 398 399 static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) 400 { 401 return (struct ethnl_dump_ctx *)cb->ctx; 402 } 403 404 /** 405 * ethnl_default_parse() - Parse request message 406 * @req_info: pointer to structure to put data into 407 * @info: genl_info from the request 408 * @request_ops: struct request_ops for request type 409 * @require_dev: fail if no device identified in header 410 * 411 * Parse universal request header and call request specific ->parse_request() 412 * callback (if defined) to parse the rest of the message. 413 * 414 * Return: 0 on success or negative error code 415 */ 416 static int ethnl_default_parse(struct ethnl_req_info *req_info, 417 const struct genl_info *info, 418 const struct ethnl_request_ops *request_ops, 419 bool require_dev) 420 { 421 struct nlattr **tb = info->attrs; 422 int ret; 423 424 ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], 425 genl_info_net(info), info->extack, 426 require_dev); 427 if (ret < 0) 428 return ret; 429 430 if (request_ops->parse_request) { 431 ret = request_ops->parse_request(req_info, tb, info->extack); 432 if (ret < 0) 433 return ret; 434 } 435 436 return 0; 437 } 438 439 /** 440 * ethnl_init_reply_data() - Initialize reply data for GET request 441 * @reply_data: pointer to embedded struct ethnl_reply_data 442 * @ops: instance of struct ethnl_request_ops describing the layout 443 * @dev: network device to initialize the reply for 444 * 445 * Fills the reply data part with zeros and sets the dev member. Must be called 446 * before calling the ->fill_reply() callback (for each iteration when handling 447 * dump requests). 448 */ 449 static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, 450 const struct ethnl_request_ops *ops, 451 struct net_device *dev) 452 { 453 memset(reply_data, 0, ops->reply_data_size); 454 reply_data->dev = dev; 455 } 456 457 /* default ->doit() handler for GET type requests */ 458 static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) 459 { 460 struct ethnl_reply_data *reply_data = NULL; 461 struct ethnl_req_info *req_info = NULL; 462 const u8 cmd = info->genlhdr->cmd; 463 const struct ethnl_request_ops *ops; 464 int hdr_len, reply_len; 465 struct sk_buff *rskb; 466 void *reply_payload; 467 int ret; 468 469 ops = ethnl_default_requests[cmd]; 470 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 471 return -EOPNOTSUPP; 472 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 473 return -EINVAL; 474 475 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 476 if (!req_info) 477 return -ENOMEM; 478 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 479 if (!reply_data) { 480 kfree(req_info); 481 return -ENOMEM; 482 } 483 484 ret = ethnl_default_parse(req_info, info, ops, !ops->allow_nodev_do); 485 if (ret < 0) 486 goto err_dev; 487 ethnl_init_reply_data(reply_data, ops, req_info->dev); 488 489 rtnl_lock(); 490 ret = ops->prepare_data(req_info, reply_data, info); 491 rtnl_unlock(); 492 if (ret < 0) 493 goto err_cleanup; 494 ret = ops->reply_size(req_info, reply_data); 495 if (ret < 0) 496 goto err_cleanup; 497 reply_len = ret; 498 ret = -ENOMEM; 499 rskb = ethnl_reply_init(reply_len + ethnl_reply_header_size(), 500 req_info->dev, ops->reply_cmd, 501 ops->hdr_attr, info, &reply_payload); 502 if (!rskb) 503 goto err_cleanup; 504 hdr_len = rskb->len; 505 ret = ops->fill_reply(rskb, req_info, reply_data); 506 if (ret < 0) 507 goto err_msg; 508 WARN_ONCE(rskb->len - hdr_len > reply_len, 509 "ethnl cmd %d: calculated reply length %d, but consumed %d\n", 510 cmd, reply_len, rskb->len - hdr_len); 511 if (ops->cleanup_data) 512 ops->cleanup_data(reply_data); 513 514 genlmsg_end(rskb, reply_payload); 515 netdev_put(req_info->dev, &req_info->dev_tracker); 516 kfree(reply_data); 517 kfree(req_info); 518 return genlmsg_reply(rskb, info); 519 520 err_msg: 521 WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); 522 nlmsg_free(rskb); 523 err_cleanup: 524 if (ops->cleanup_data) 525 ops->cleanup_data(reply_data); 526 err_dev: 527 netdev_put(req_info->dev, &req_info->dev_tracker); 528 kfree(reply_data); 529 kfree(req_info); 530 return ret; 531 } 532 533 static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, 534 const struct ethnl_dump_ctx *ctx, 535 const struct genl_info *info) 536 { 537 void *ehdr; 538 int ret; 539 540 ehdr = genlmsg_put(skb, info->snd_portid, info->snd_seq, 541 ðtool_genl_family, NLM_F_MULTI, 542 ctx->ops->reply_cmd); 543 if (!ehdr) 544 return -EMSGSIZE; 545 546 ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); 547 rtnl_lock(); 548 ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, info); 549 rtnl_unlock(); 550 if (ret < 0) 551 goto out; 552 ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); 553 if (ret < 0) 554 goto out; 555 ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); 556 557 out: 558 if (ctx->ops->cleanup_data) 559 ctx->ops->cleanup_data(ctx->reply_data); 560 ctx->reply_data->dev = NULL; 561 if (ret < 0) 562 genlmsg_cancel(skb, ehdr); 563 else 564 genlmsg_end(skb, ehdr); 565 return ret; 566 } 567 568 /* Default ->dumpit() handler for GET requests. */ 569 static int ethnl_default_dumpit(struct sk_buff *skb, 570 struct netlink_callback *cb) 571 { 572 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 573 struct net *net = sock_net(skb->sk); 574 struct net_device *dev; 575 int ret = 0; 576 577 rcu_read_lock(); 578 for_each_netdev_dump(net, dev, ctx->pos_ifindex) { 579 dev_hold(dev); 580 rcu_read_unlock(); 581 582 ret = ethnl_default_dump_one(skb, dev, ctx, genl_info_dump(cb)); 583 584 rcu_read_lock(); 585 dev_put(dev); 586 587 if (ret < 0 && ret != -EOPNOTSUPP) { 588 if (likely(skb->len)) 589 ret = skb->len; 590 break; 591 } 592 ret = 0; 593 } 594 rcu_read_unlock(); 595 596 return ret; 597 } 598 599 /* generic ->start() handler for GET requests */ 600 static int ethnl_default_start(struct netlink_callback *cb) 601 { 602 const struct genl_dumpit_info *info = genl_dumpit_info(cb); 603 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 604 struct ethnl_reply_data *reply_data; 605 const struct ethnl_request_ops *ops; 606 struct ethnl_req_info *req_info; 607 struct genlmsghdr *ghdr; 608 int ret; 609 610 BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); 611 612 ghdr = nlmsg_data(cb->nlh); 613 ops = ethnl_default_requests[ghdr->cmd]; 614 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) 615 return -EOPNOTSUPP; 616 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 617 if (!req_info) 618 return -ENOMEM; 619 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 620 if (!reply_data) { 621 ret = -ENOMEM; 622 goto free_req_info; 623 } 624 625 ret = ethnl_default_parse(req_info, &info->info, ops, false); 626 if (req_info->dev) { 627 /* We ignore device specification in dump requests but as the 628 * same parser as for non-dump (doit) requests is used, it 629 * would take reference to the device if it finds one 630 */ 631 netdev_put(req_info->dev, &req_info->dev_tracker); 632 req_info->dev = NULL; 633 } 634 if (ret < 0) 635 goto free_reply_data; 636 637 ctx->ops = ops; 638 ctx->req_info = req_info; 639 ctx->reply_data = reply_data; 640 ctx->pos_ifindex = 0; 641 642 return 0; 643 644 free_reply_data: 645 kfree(reply_data); 646 free_req_info: 647 kfree(req_info); 648 649 return ret; 650 } 651 652 /* default ->done() handler for GET requests */ 653 static int ethnl_default_done(struct netlink_callback *cb) 654 { 655 struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); 656 657 kfree(ctx->reply_data); 658 kfree(ctx->req_info); 659 660 return 0; 661 } 662 663 static int ethnl_default_set_doit(struct sk_buff *skb, struct genl_info *info) 664 { 665 const struct ethnl_request_ops *ops; 666 struct ethnl_req_info req_info = {}; 667 const u8 cmd = info->genlhdr->cmd; 668 int ret; 669 670 ops = ethnl_default_requests[cmd]; 671 if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) 672 return -EOPNOTSUPP; 673 if (GENL_REQ_ATTR_CHECK(info, ops->hdr_attr)) 674 return -EINVAL; 675 676 ret = ethnl_parse_header_dev_get(&req_info, info->attrs[ops->hdr_attr], 677 genl_info_net(info), info->extack, 678 true); 679 if (ret < 0) 680 return ret; 681 682 if (ops->set_validate) { 683 ret = ops->set_validate(&req_info, info); 684 /* 0 means nothing to do */ 685 if (ret <= 0) 686 goto out_dev; 687 } 688 689 rtnl_lock(); 690 ret = ethnl_ops_begin(req_info.dev); 691 if (ret < 0) 692 goto out_rtnl; 693 694 ret = ops->set(&req_info, info); 695 if (ret <= 0) 696 goto out_ops; 697 ethtool_notify(req_info.dev, ops->set_ntf_cmd, NULL); 698 699 ret = 0; 700 out_ops: 701 ethnl_ops_complete(req_info.dev); 702 out_rtnl: 703 rtnl_unlock(); 704 out_dev: 705 ethnl_parse_header_dev_put(&req_info); 706 return ret; 707 } 708 709 static const struct ethnl_request_ops * 710 ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { 711 [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, 712 [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, 713 [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, 714 [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, 715 [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, 716 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, 717 [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, 718 [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, 719 [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, 720 [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, 721 [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, 722 [ETHTOOL_MSG_FEC_NTF] = ðnl_fec_request_ops, 723 [ETHTOOL_MSG_MODULE_NTF] = ðnl_module_request_ops, 724 [ETHTOOL_MSG_PLCA_NTF] = ðnl_plca_cfg_request_ops, 725 [ETHTOOL_MSG_MM_NTF] = ðnl_mm_request_ops, 726 }; 727 728 /* default notification handler */ 729 static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, 730 const void *data) 731 { 732 struct ethnl_reply_data *reply_data; 733 const struct ethnl_request_ops *ops; 734 struct ethnl_req_info *req_info; 735 struct genl_info info; 736 struct sk_buff *skb; 737 void *reply_payload; 738 int reply_len; 739 int ret; 740 741 genl_info_init_ntf(&info, ðtool_genl_family, cmd); 742 743 if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || 744 !ethnl_default_notify_ops[cmd], 745 "unexpected notification type %u\n", cmd)) 746 return; 747 ops = ethnl_default_notify_ops[cmd]; 748 req_info = kzalloc(ops->req_info_size, GFP_KERNEL); 749 if (!req_info) 750 return; 751 reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); 752 if (!reply_data) { 753 kfree(req_info); 754 return; 755 } 756 757 req_info->dev = dev; 758 req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; 759 760 ethnl_init_reply_data(reply_data, ops, dev); 761 ret = ops->prepare_data(req_info, reply_data, &info); 762 if (ret < 0) 763 goto err_cleanup; 764 ret = ops->reply_size(req_info, reply_data); 765 if (ret < 0) 766 goto err_cleanup; 767 reply_len = ret + ethnl_reply_header_size(); 768 skb = genlmsg_new(reply_len, GFP_KERNEL); 769 if (!skb) 770 goto err_cleanup; 771 reply_payload = ethnl_bcastmsg_put(skb, cmd); 772 if (!reply_payload) 773 goto err_skb; 774 ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); 775 if (ret < 0) 776 goto err_msg; 777 ret = ops->fill_reply(skb, req_info, reply_data); 778 if (ret < 0) 779 goto err_msg; 780 if (ops->cleanup_data) 781 ops->cleanup_data(reply_data); 782 783 genlmsg_end(skb, reply_payload); 784 kfree(reply_data); 785 kfree(req_info); 786 ethnl_multicast(skb, dev); 787 return; 788 789 err_msg: 790 WARN_ONCE(ret == -EMSGSIZE, 791 "calculated message payload length (%d) not sufficient\n", 792 reply_len); 793 err_skb: 794 nlmsg_free(skb); 795 err_cleanup: 796 if (ops->cleanup_data) 797 ops->cleanup_data(reply_data); 798 kfree(reply_data); 799 kfree(req_info); 800 return; 801 } 802 803 /* notifications */ 804 805 typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, 806 const void *data); 807 808 static const ethnl_notify_handler_t ethnl_notify_handlers[] = { 809 [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, 810 [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, 811 [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, 812 [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, 813 [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, 814 [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, 815 [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, 816 [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, 817 [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, 818 [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, 819 [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, 820 [ETHTOOL_MSG_FEC_NTF] = ethnl_default_notify, 821 [ETHTOOL_MSG_MODULE_NTF] = ethnl_default_notify, 822 [ETHTOOL_MSG_PLCA_NTF] = ethnl_default_notify, 823 [ETHTOOL_MSG_MM_NTF] = ethnl_default_notify, 824 }; 825 826 void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) 827 { 828 if (unlikely(!ethnl_ok)) 829 return; 830 ASSERT_RTNL(); 831 832 if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && 833 ethnl_notify_handlers[cmd])) 834 ethnl_notify_handlers[cmd](dev, cmd, data); 835 else 836 WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", 837 cmd, netdev_name(dev)); 838 } 839 EXPORT_SYMBOL(ethtool_notify); 840 841 static void ethnl_notify_features(struct netdev_notifier_info *info) 842 { 843 struct net_device *dev = netdev_notifier_info_to_dev(info); 844 845 ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); 846 } 847 848 static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, 849 void *ptr) 850 { 851 struct netdev_notifier_info *info = ptr; 852 struct netlink_ext_ack *extack; 853 struct net_device *dev; 854 855 dev = netdev_notifier_info_to_dev(info); 856 extack = netdev_notifier_info_to_extack(info); 857 858 switch (event) { 859 case NETDEV_FEAT_CHANGE: 860 ethnl_notify_features(ptr); 861 break; 862 case NETDEV_PRE_UP: 863 if (dev->ethtool->module_fw_flash_in_progress) { 864 NL_SET_ERR_MSG(extack, "Can't set port up while flashing module firmware"); 865 return NOTIFY_BAD; 866 } 867 } 868 869 return NOTIFY_DONE; 870 } 871 872 static struct notifier_block ethnl_netdev_notifier = { 873 .notifier_call = ethnl_netdev_event, 874 }; 875 876 /* genetlink setup */ 877 878 static const struct genl_ops ethtool_genl_ops[] = { 879 { 880 .cmd = ETHTOOL_MSG_STRSET_GET, 881 .doit = ethnl_default_doit, 882 .start = ethnl_default_start, 883 .dumpit = ethnl_default_dumpit, 884 .done = ethnl_default_done, 885 .policy = ethnl_strset_get_policy, 886 .maxattr = ARRAY_SIZE(ethnl_strset_get_policy) - 1, 887 }, 888 { 889 .cmd = ETHTOOL_MSG_LINKINFO_GET, 890 .doit = ethnl_default_doit, 891 .start = ethnl_default_start, 892 .dumpit = ethnl_default_dumpit, 893 .done = ethnl_default_done, 894 .policy = ethnl_linkinfo_get_policy, 895 .maxattr = ARRAY_SIZE(ethnl_linkinfo_get_policy) - 1, 896 }, 897 { 898 .cmd = ETHTOOL_MSG_LINKINFO_SET, 899 .flags = GENL_UNS_ADMIN_PERM, 900 .doit = ethnl_default_set_doit, 901 .policy = ethnl_linkinfo_set_policy, 902 .maxattr = ARRAY_SIZE(ethnl_linkinfo_set_policy) - 1, 903 }, 904 { 905 .cmd = ETHTOOL_MSG_LINKMODES_GET, 906 .doit = ethnl_default_doit, 907 .start = ethnl_default_start, 908 .dumpit = ethnl_default_dumpit, 909 .done = ethnl_default_done, 910 .policy = ethnl_linkmodes_get_policy, 911 .maxattr = ARRAY_SIZE(ethnl_linkmodes_get_policy) - 1, 912 }, 913 { 914 .cmd = ETHTOOL_MSG_LINKMODES_SET, 915 .flags = GENL_UNS_ADMIN_PERM, 916 .doit = ethnl_default_set_doit, 917 .policy = ethnl_linkmodes_set_policy, 918 .maxattr = ARRAY_SIZE(ethnl_linkmodes_set_policy) - 1, 919 }, 920 { 921 .cmd = ETHTOOL_MSG_LINKSTATE_GET, 922 .doit = ethnl_default_doit, 923 .start = ethnl_default_start, 924 .dumpit = ethnl_default_dumpit, 925 .done = ethnl_default_done, 926 .policy = ethnl_linkstate_get_policy, 927 .maxattr = ARRAY_SIZE(ethnl_linkstate_get_policy) - 1, 928 }, 929 { 930 .cmd = ETHTOOL_MSG_DEBUG_GET, 931 .doit = ethnl_default_doit, 932 .start = ethnl_default_start, 933 .dumpit = ethnl_default_dumpit, 934 .done = ethnl_default_done, 935 .policy = ethnl_debug_get_policy, 936 .maxattr = ARRAY_SIZE(ethnl_debug_get_policy) - 1, 937 }, 938 { 939 .cmd = ETHTOOL_MSG_DEBUG_SET, 940 .flags = GENL_UNS_ADMIN_PERM, 941 .doit = ethnl_default_set_doit, 942 .policy = ethnl_debug_set_policy, 943 .maxattr = ARRAY_SIZE(ethnl_debug_set_policy) - 1, 944 }, 945 { 946 .cmd = ETHTOOL_MSG_WOL_GET, 947 .flags = GENL_UNS_ADMIN_PERM, 948 .doit = ethnl_default_doit, 949 .start = ethnl_default_start, 950 .dumpit = ethnl_default_dumpit, 951 .done = ethnl_default_done, 952 .policy = ethnl_wol_get_policy, 953 .maxattr = ARRAY_SIZE(ethnl_wol_get_policy) - 1, 954 }, 955 { 956 .cmd = ETHTOOL_MSG_WOL_SET, 957 .flags = GENL_UNS_ADMIN_PERM, 958 .doit = ethnl_default_set_doit, 959 .policy = ethnl_wol_set_policy, 960 .maxattr = ARRAY_SIZE(ethnl_wol_set_policy) - 1, 961 }, 962 { 963 .cmd = ETHTOOL_MSG_FEATURES_GET, 964 .doit = ethnl_default_doit, 965 .start = ethnl_default_start, 966 .dumpit = ethnl_default_dumpit, 967 .done = ethnl_default_done, 968 .policy = ethnl_features_get_policy, 969 .maxattr = ARRAY_SIZE(ethnl_features_get_policy) - 1, 970 }, 971 { 972 .cmd = ETHTOOL_MSG_FEATURES_SET, 973 .flags = GENL_UNS_ADMIN_PERM, 974 .doit = ethnl_set_features, 975 .policy = ethnl_features_set_policy, 976 .maxattr = ARRAY_SIZE(ethnl_features_set_policy) - 1, 977 }, 978 { 979 .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, 980 .doit = ethnl_default_doit, 981 .start = ethnl_default_start, 982 .dumpit = ethnl_default_dumpit, 983 .done = ethnl_default_done, 984 .policy = ethnl_privflags_get_policy, 985 .maxattr = ARRAY_SIZE(ethnl_privflags_get_policy) - 1, 986 }, 987 { 988 .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, 989 .flags = GENL_UNS_ADMIN_PERM, 990 .doit = ethnl_default_set_doit, 991 .policy = ethnl_privflags_set_policy, 992 .maxattr = ARRAY_SIZE(ethnl_privflags_set_policy) - 1, 993 }, 994 { 995 .cmd = ETHTOOL_MSG_RINGS_GET, 996 .doit = ethnl_default_doit, 997 .start = ethnl_default_start, 998 .dumpit = ethnl_default_dumpit, 999 .done = ethnl_default_done, 1000 .policy = ethnl_rings_get_policy, 1001 .maxattr = ARRAY_SIZE(ethnl_rings_get_policy) - 1, 1002 }, 1003 { 1004 .cmd = ETHTOOL_MSG_RINGS_SET, 1005 .flags = GENL_UNS_ADMIN_PERM, 1006 .doit = ethnl_default_set_doit, 1007 .policy = ethnl_rings_set_policy, 1008 .maxattr = ARRAY_SIZE(ethnl_rings_set_policy) - 1, 1009 }, 1010 { 1011 .cmd = ETHTOOL_MSG_CHANNELS_GET, 1012 .doit = ethnl_default_doit, 1013 .start = ethnl_default_start, 1014 .dumpit = ethnl_default_dumpit, 1015 .done = ethnl_default_done, 1016 .policy = ethnl_channels_get_policy, 1017 .maxattr = ARRAY_SIZE(ethnl_channels_get_policy) - 1, 1018 }, 1019 { 1020 .cmd = ETHTOOL_MSG_CHANNELS_SET, 1021 .flags = GENL_UNS_ADMIN_PERM, 1022 .doit = ethnl_default_set_doit, 1023 .policy = ethnl_channels_set_policy, 1024 .maxattr = ARRAY_SIZE(ethnl_channels_set_policy) - 1, 1025 }, 1026 { 1027 .cmd = ETHTOOL_MSG_COALESCE_GET, 1028 .doit = ethnl_default_doit, 1029 .start = ethnl_default_start, 1030 .dumpit = ethnl_default_dumpit, 1031 .done = ethnl_default_done, 1032 .policy = ethnl_coalesce_get_policy, 1033 .maxattr = ARRAY_SIZE(ethnl_coalesce_get_policy) - 1, 1034 }, 1035 { 1036 .cmd = ETHTOOL_MSG_COALESCE_SET, 1037 .flags = GENL_UNS_ADMIN_PERM, 1038 .doit = ethnl_default_set_doit, 1039 .policy = ethnl_coalesce_set_policy, 1040 .maxattr = ARRAY_SIZE(ethnl_coalesce_set_policy) - 1, 1041 }, 1042 { 1043 .cmd = ETHTOOL_MSG_PAUSE_GET, 1044 .doit = ethnl_default_doit, 1045 .start = ethnl_default_start, 1046 .dumpit = ethnl_default_dumpit, 1047 .done = ethnl_default_done, 1048 .policy = ethnl_pause_get_policy, 1049 .maxattr = ARRAY_SIZE(ethnl_pause_get_policy) - 1, 1050 }, 1051 { 1052 .cmd = ETHTOOL_MSG_PAUSE_SET, 1053 .flags = GENL_UNS_ADMIN_PERM, 1054 .doit = ethnl_default_set_doit, 1055 .policy = ethnl_pause_set_policy, 1056 .maxattr = ARRAY_SIZE(ethnl_pause_set_policy) - 1, 1057 }, 1058 { 1059 .cmd = ETHTOOL_MSG_EEE_GET, 1060 .doit = ethnl_default_doit, 1061 .start = ethnl_default_start, 1062 .dumpit = ethnl_default_dumpit, 1063 .done = ethnl_default_done, 1064 .policy = ethnl_eee_get_policy, 1065 .maxattr = ARRAY_SIZE(ethnl_eee_get_policy) - 1, 1066 }, 1067 { 1068 .cmd = ETHTOOL_MSG_EEE_SET, 1069 .flags = GENL_UNS_ADMIN_PERM, 1070 .doit = ethnl_default_set_doit, 1071 .policy = ethnl_eee_set_policy, 1072 .maxattr = ARRAY_SIZE(ethnl_eee_set_policy) - 1, 1073 }, 1074 { 1075 .cmd = ETHTOOL_MSG_TSINFO_GET, 1076 .doit = ethnl_default_doit, 1077 .start = ethnl_default_start, 1078 .dumpit = ethnl_default_dumpit, 1079 .done = ethnl_default_done, 1080 .policy = ethnl_tsinfo_get_policy, 1081 .maxattr = ARRAY_SIZE(ethnl_tsinfo_get_policy) - 1, 1082 }, 1083 { 1084 .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, 1085 .flags = GENL_UNS_ADMIN_PERM, 1086 .doit = ethnl_act_cable_test, 1087 .policy = ethnl_cable_test_act_policy, 1088 .maxattr = ARRAY_SIZE(ethnl_cable_test_act_policy) - 1, 1089 }, 1090 { 1091 .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, 1092 .flags = GENL_UNS_ADMIN_PERM, 1093 .doit = ethnl_act_cable_test_tdr, 1094 .policy = ethnl_cable_test_tdr_act_policy, 1095 .maxattr = ARRAY_SIZE(ethnl_cable_test_tdr_act_policy) - 1, 1096 }, 1097 { 1098 .cmd = ETHTOOL_MSG_TUNNEL_INFO_GET, 1099 .doit = ethnl_tunnel_info_doit, 1100 .start = ethnl_tunnel_info_start, 1101 .dumpit = ethnl_tunnel_info_dumpit, 1102 .policy = ethnl_tunnel_info_get_policy, 1103 .maxattr = ARRAY_SIZE(ethnl_tunnel_info_get_policy) - 1, 1104 }, 1105 { 1106 .cmd = ETHTOOL_MSG_FEC_GET, 1107 .doit = ethnl_default_doit, 1108 .start = ethnl_default_start, 1109 .dumpit = ethnl_default_dumpit, 1110 .done = ethnl_default_done, 1111 .policy = ethnl_fec_get_policy, 1112 .maxattr = ARRAY_SIZE(ethnl_fec_get_policy) - 1, 1113 }, 1114 { 1115 .cmd = ETHTOOL_MSG_FEC_SET, 1116 .flags = GENL_UNS_ADMIN_PERM, 1117 .doit = ethnl_default_set_doit, 1118 .policy = ethnl_fec_set_policy, 1119 .maxattr = ARRAY_SIZE(ethnl_fec_set_policy) - 1, 1120 }, 1121 { 1122 .cmd = ETHTOOL_MSG_MODULE_EEPROM_GET, 1123 .flags = GENL_UNS_ADMIN_PERM, 1124 .doit = ethnl_default_doit, 1125 .start = ethnl_default_start, 1126 .dumpit = ethnl_default_dumpit, 1127 .done = ethnl_default_done, 1128 .policy = ethnl_module_eeprom_get_policy, 1129 .maxattr = ARRAY_SIZE(ethnl_module_eeprom_get_policy) - 1, 1130 }, 1131 { 1132 .cmd = ETHTOOL_MSG_STATS_GET, 1133 .doit = ethnl_default_doit, 1134 .start = ethnl_default_start, 1135 .dumpit = ethnl_default_dumpit, 1136 .done = ethnl_default_done, 1137 .policy = ethnl_stats_get_policy, 1138 .maxattr = ARRAY_SIZE(ethnl_stats_get_policy) - 1, 1139 }, 1140 { 1141 .cmd = ETHTOOL_MSG_PHC_VCLOCKS_GET, 1142 .doit = ethnl_default_doit, 1143 .start = ethnl_default_start, 1144 .dumpit = ethnl_default_dumpit, 1145 .done = ethnl_default_done, 1146 .policy = ethnl_phc_vclocks_get_policy, 1147 .maxattr = ARRAY_SIZE(ethnl_phc_vclocks_get_policy) - 1, 1148 }, 1149 { 1150 .cmd = ETHTOOL_MSG_MODULE_GET, 1151 .doit = ethnl_default_doit, 1152 .start = ethnl_default_start, 1153 .dumpit = ethnl_default_dumpit, 1154 .done = ethnl_default_done, 1155 .policy = ethnl_module_get_policy, 1156 .maxattr = ARRAY_SIZE(ethnl_module_get_policy) - 1, 1157 }, 1158 { 1159 .cmd = ETHTOOL_MSG_MODULE_SET, 1160 .flags = GENL_UNS_ADMIN_PERM, 1161 .doit = ethnl_default_set_doit, 1162 .policy = ethnl_module_set_policy, 1163 .maxattr = ARRAY_SIZE(ethnl_module_set_policy) - 1, 1164 }, 1165 { 1166 .cmd = ETHTOOL_MSG_PSE_GET, 1167 .doit = ethnl_default_doit, 1168 .start = ethnl_default_start, 1169 .dumpit = ethnl_default_dumpit, 1170 .done = ethnl_default_done, 1171 .policy = ethnl_pse_get_policy, 1172 .maxattr = ARRAY_SIZE(ethnl_pse_get_policy) - 1, 1173 }, 1174 { 1175 .cmd = ETHTOOL_MSG_PSE_SET, 1176 .flags = GENL_UNS_ADMIN_PERM, 1177 .doit = ethnl_default_set_doit, 1178 .policy = ethnl_pse_set_policy, 1179 .maxattr = ARRAY_SIZE(ethnl_pse_set_policy) - 1, 1180 }, 1181 { 1182 .cmd = ETHTOOL_MSG_RSS_GET, 1183 .doit = ethnl_default_doit, 1184 .start = ethnl_rss_dump_start, 1185 .dumpit = ethnl_rss_dumpit, 1186 .policy = ethnl_rss_get_policy, 1187 .maxattr = ARRAY_SIZE(ethnl_rss_get_policy) - 1, 1188 }, 1189 { 1190 .cmd = ETHTOOL_MSG_PLCA_GET_CFG, 1191 .doit = ethnl_default_doit, 1192 .start = ethnl_default_start, 1193 .dumpit = ethnl_default_dumpit, 1194 .done = ethnl_default_done, 1195 .policy = ethnl_plca_get_cfg_policy, 1196 .maxattr = ARRAY_SIZE(ethnl_plca_get_cfg_policy) - 1, 1197 }, 1198 { 1199 .cmd = ETHTOOL_MSG_PLCA_SET_CFG, 1200 .flags = GENL_UNS_ADMIN_PERM, 1201 .doit = ethnl_default_set_doit, 1202 .policy = ethnl_plca_set_cfg_policy, 1203 .maxattr = ARRAY_SIZE(ethnl_plca_set_cfg_policy) - 1, 1204 }, 1205 { 1206 .cmd = ETHTOOL_MSG_PLCA_GET_STATUS, 1207 .doit = ethnl_default_doit, 1208 .start = ethnl_default_start, 1209 .dumpit = ethnl_default_dumpit, 1210 .done = ethnl_default_done, 1211 .policy = ethnl_plca_get_status_policy, 1212 .maxattr = ARRAY_SIZE(ethnl_plca_get_status_policy) - 1, 1213 }, 1214 { 1215 .cmd = ETHTOOL_MSG_MM_GET, 1216 .doit = ethnl_default_doit, 1217 .start = ethnl_default_start, 1218 .dumpit = ethnl_default_dumpit, 1219 .done = ethnl_default_done, 1220 .policy = ethnl_mm_get_policy, 1221 .maxattr = ARRAY_SIZE(ethnl_mm_get_policy) - 1, 1222 }, 1223 { 1224 .cmd = ETHTOOL_MSG_MM_SET, 1225 .flags = GENL_UNS_ADMIN_PERM, 1226 .doit = ethnl_default_set_doit, 1227 .policy = ethnl_mm_set_policy, 1228 .maxattr = ARRAY_SIZE(ethnl_mm_set_policy) - 1, 1229 }, 1230 { 1231 .cmd = ETHTOOL_MSG_MODULE_FW_FLASH_ACT, 1232 .flags = GENL_UNS_ADMIN_PERM, 1233 .doit = ethnl_act_module_fw_flash, 1234 .policy = ethnl_module_fw_flash_act_policy, 1235 .maxattr = ARRAY_SIZE(ethnl_module_fw_flash_act_policy) - 1, 1236 }, 1237 { 1238 .cmd = ETHTOOL_MSG_PHY_GET, 1239 .doit = ethnl_phy_doit, 1240 .start = ethnl_phy_start, 1241 .dumpit = ethnl_phy_dumpit, 1242 .done = ethnl_phy_done, 1243 .policy = ethnl_phy_get_policy, 1244 .maxattr = ARRAY_SIZE(ethnl_phy_get_policy) - 1, 1245 }, 1246 }; 1247 1248 static const struct genl_multicast_group ethtool_nl_mcgrps[] = { 1249 [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, 1250 }; 1251 1252 static struct genl_family ethtool_genl_family __ro_after_init = { 1253 .name = ETHTOOL_GENL_NAME, 1254 .version = ETHTOOL_GENL_VERSION, 1255 .netnsok = true, 1256 .parallel_ops = true, 1257 .ops = ethtool_genl_ops, 1258 .n_ops = ARRAY_SIZE(ethtool_genl_ops), 1259 .resv_start_op = ETHTOOL_MSG_MODULE_GET + 1, 1260 .mcgrps = ethtool_nl_mcgrps, 1261 .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), 1262 .sock_priv_size = sizeof(struct ethnl_sock_priv), 1263 .sock_priv_destroy = ethnl_sock_priv_destroy, 1264 }; 1265 1266 /* module setup */ 1267 1268 static int __init ethnl_init(void) 1269 { 1270 int ret; 1271 1272 ret = genl_register_family(ðtool_genl_family); 1273 if (WARN(ret < 0, "ethtool: genetlink family registration failed")) 1274 return ret; 1275 ethnl_ok = true; 1276 1277 ret = register_netdevice_notifier(ðnl_netdev_notifier); 1278 WARN(ret < 0, "ethtool: net device notifier registration failed"); 1279 return ret; 1280 } 1281 1282 subsys_initcall(ethnl_init); 1283