Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-only |
| 2 | |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 3 | #include <net/sock.h> |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 4 | #include <linux/ethtool_netlink.h> |
| 5 | #include "netlink.h" |
| 6 | |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 7 | static struct genl_family ethtool_genl_family; |
| 8 | |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 9 | static bool ethnl_ok __read_mostly; |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 10 | static u32 ethnl_bcast_seq; |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 11 | |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 12 | static const struct nla_policy ethnl_header_policy[ETHTOOL_A_HEADER_MAX + 1] = { |
| 13 | [ETHTOOL_A_HEADER_UNSPEC] = { .type = NLA_REJECT }, |
| 14 | [ETHTOOL_A_HEADER_DEV_INDEX] = { .type = NLA_U32 }, |
| 15 | [ETHTOOL_A_HEADER_DEV_NAME] = { .type = NLA_NUL_STRING, |
| 16 | .len = ALTIFNAMSIZ - 1 }, |
| 17 | [ETHTOOL_A_HEADER_FLAGS] = { .type = NLA_U32 }, |
| 18 | }; |
| 19 | |
| 20 | /** |
Michal Kubecek | 9813054 | 2020-03-12 21:07:38 +0100 | [diff] [blame] | 21 | * ethnl_parse_header_dev_get() - parse request header |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 22 | * @req_info: structure to put results into |
| 23 | * @header: nest attribute with request header |
| 24 | * @net: request netns |
| 25 | * @extack: netlink extack for error reporting |
| 26 | * @require_dev: fail if no device identified in header |
| 27 | * |
| 28 | * Parse request header in nested attribute @nest and puts results into |
| 29 | * the structure pointed to by @req_info. Extack from @info is used for error |
| 30 | * reporting. If req_info->dev is not null on return, reference to it has |
| 31 | * been taken. If error is returned, *req_info is null initialized and no |
| 32 | * reference is held. |
| 33 | * |
| 34 | * Return: 0 on success or negative error code |
| 35 | */ |
Michal Kubecek | 9813054 | 2020-03-12 21:07:38 +0100 | [diff] [blame] | 36 | int ethnl_parse_header_dev_get(struct ethnl_req_info *req_info, |
| 37 | const struct nlattr *header, struct net *net, |
| 38 | struct netlink_ext_ack *extack, bool require_dev) |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 39 | { |
| 40 | struct nlattr *tb[ETHTOOL_A_HEADER_MAX + 1]; |
| 41 | const struct nlattr *devname_attr; |
| 42 | struct net_device *dev = NULL; |
Michal Kubecek | 2363d73 | 2020-03-15 18:17:53 +0100 | [diff] [blame] | 43 | u32 flags = 0; |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 44 | int ret; |
| 45 | |
| 46 | if (!header) { |
| 47 | NL_SET_ERR_MSG(extack, "request header missing"); |
| 48 | return -EINVAL; |
| 49 | } |
| 50 | ret = nla_parse_nested(tb, ETHTOOL_A_HEADER_MAX, header, |
| 51 | ethnl_header_policy, extack); |
| 52 | if (ret < 0) |
| 53 | return ret; |
Michal Kubecek | 2363d73 | 2020-03-15 18:17:53 +0100 | [diff] [blame] | 54 | if (tb[ETHTOOL_A_HEADER_FLAGS]) { |
| 55 | flags = nla_get_u32(tb[ETHTOOL_A_HEADER_FLAGS]); |
| 56 | if (flags & ~ETHTOOL_FLAG_ALL) { |
| 57 | NL_SET_ERR_MSG_ATTR(extack, tb[ETHTOOL_A_HEADER_FLAGS], |
| 58 | "unrecognized request flags"); |
| 59 | nl_set_extack_cookie_u32(extack, ETHTOOL_FLAG_ALL); |
| 60 | return -EOPNOTSUPP; |
| 61 | } |
| 62 | } |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 63 | |
Michal Kubecek | 2363d73 | 2020-03-15 18:17:53 +0100 | [diff] [blame] | 64 | devname_attr = tb[ETHTOOL_A_HEADER_DEV_NAME]; |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 65 | if (tb[ETHTOOL_A_HEADER_DEV_INDEX]) { |
| 66 | u32 ifindex = nla_get_u32(tb[ETHTOOL_A_HEADER_DEV_INDEX]); |
| 67 | |
| 68 | dev = dev_get_by_index(net, ifindex); |
| 69 | if (!dev) { |
| 70 | NL_SET_ERR_MSG_ATTR(extack, |
| 71 | tb[ETHTOOL_A_HEADER_DEV_INDEX], |
| 72 | "no device matches ifindex"); |
| 73 | return -ENODEV; |
| 74 | } |
| 75 | /* if both ifindex and ifname are passed, they must match */ |
| 76 | if (devname_attr && |
| 77 | strncmp(dev->name, nla_data(devname_attr), IFNAMSIZ)) { |
| 78 | dev_put(dev); |
| 79 | NL_SET_ERR_MSG_ATTR(extack, header, |
| 80 | "ifindex and name do not match"); |
| 81 | return -ENODEV; |
| 82 | } |
| 83 | } else if (devname_attr) { |
| 84 | dev = dev_get_by_name(net, nla_data(devname_attr)); |
| 85 | if (!dev) { |
| 86 | NL_SET_ERR_MSG_ATTR(extack, devname_attr, |
| 87 | "no device matches name"); |
| 88 | return -ENODEV; |
| 89 | } |
| 90 | } else if (require_dev) { |
| 91 | NL_SET_ERR_MSG_ATTR(extack, header, |
| 92 | "neither ifindex nor name specified"); |
| 93 | return -EINVAL; |
| 94 | } |
| 95 | |
| 96 | if (dev && !netif_device_present(dev)) { |
| 97 | dev_put(dev); |
| 98 | NL_SET_ERR_MSG(extack, "device not present"); |
| 99 | return -ENODEV; |
| 100 | } |
| 101 | |
| 102 | req_info->dev = dev; |
Michal Kubecek | 2363d73 | 2020-03-15 18:17:53 +0100 | [diff] [blame] | 103 | req_info->flags = flags; |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 104 | return 0; |
| 105 | } |
| 106 | |
| 107 | /** |
| 108 | * ethnl_fill_reply_header() - Put common header into a reply message |
| 109 | * @skb: skb with the message |
| 110 | * @dev: network device to describe in header |
| 111 | * @attrtype: attribute type to use for the nest |
| 112 | * |
| 113 | * Create a nested attribute with attributes describing given network device. |
| 114 | * |
| 115 | * Return: 0 on success, error value (-EMSGSIZE only) on error |
| 116 | */ |
| 117 | int ethnl_fill_reply_header(struct sk_buff *skb, struct net_device *dev, |
| 118 | u16 attrtype) |
| 119 | { |
| 120 | struct nlattr *nest; |
| 121 | |
| 122 | if (!dev) |
| 123 | return 0; |
| 124 | nest = nla_nest_start(skb, attrtype); |
| 125 | if (!nest) |
| 126 | return -EMSGSIZE; |
| 127 | |
| 128 | if (nla_put_u32(skb, ETHTOOL_A_HEADER_DEV_INDEX, (u32)dev->ifindex) || |
| 129 | nla_put_string(skb, ETHTOOL_A_HEADER_DEV_NAME, dev->name)) |
| 130 | goto nla_put_failure; |
| 131 | /* If more attributes are put into reply header, ethnl_header_size() |
| 132 | * must be updated to account for them. |
| 133 | */ |
| 134 | |
| 135 | nla_nest_end(skb, nest); |
| 136 | return 0; |
| 137 | |
| 138 | nla_put_failure: |
| 139 | nla_nest_cancel(skb, nest); |
| 140 | return -EMSGSIZE; |
| 141 | } |
| 142 | |
| 143 | /** |
| 144 | * ethnl_reply_init() - Create skb for a reply and fill device identification |
Michal Kubecek | d2c4b44 | 2020-01-26 23:11:01 +0100 | [diff] [blame] | 145 | * @payload: payload length (without netlink and genetlink header) |
| 146 | * @dev: device the reply is about (may be null) |
| 147 | * @cmd: ETHTOOL_MSG_* message type for reply |
| 148 | * @hdr_attrtype: attribute type for common header |
| 149 | * @info: genetlink info of the received packet we respond to |
| 150 | * @ehdrp: place to store payload pointer returned by genlmsg_new() |
Michal Kubecek | 041b1c5 | 2019-12-27 15:55:23 +0100 | [diff] [blame] | 151 | * |
| 152 | * Return: pointer to allocated skb on success, NULL on error |
| 153 | */ |
| 154 | struct sk_buff *ethnl_reply_init(size_t payload, struct net_device *dev, u8 cmd, |
| 155 | u16 hdr_attrtype, struct genl_info *info, |
| 156 | void **ehdrp) |
| 157 | { |
| 158 | struct sk_buff *skb; |
| 159 | |
| 160 | skb = genlmsg_new(payload, GFP_KERNEL); |
| 161 | if (!skb) |
| 162 | goto err; |
| 163 | *ehdrp = genlmsg_put_reply(skb, info, ðtool_genl_family, 0, cmd); |
| 164 | if (!*ehdrp) |
| 165 | goto err_free; |
| 166 | |
| 167 | if (dev) { |
| 168 | int ret; |
| 169 | |
| 170 | ret = ethnl_fill_reply_header(skb, dev, hdr_attrtype); |
| 171 | if (ret < 0) |
| 172 | goto err_free; |
| 173 | } |
| 174 | return skb; |
| 175 | |
| 176 | err_free: |
| 177 | nlmsg_free(skb); |
| 178 | err: |
| 179 | if (info) |
| 180 | GENL_SET_ERR_MSG(info, "failed to setup reply message"); |
| 181 | return NULL; |
| 182 | } |
| 183 | |
Andrew Lunn | 0df960f | 2020-05-10 21:12:35 +0200 | [diff] [blame] | 184 | void *ethnl_bcastmsg_put(struct sk_buff *skb, u8 cmd) |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 185 | { |
| 186 | return genlmsg_put(skb, 0, ++ethnl_bcast_seq, ðtool_genl_family, 0, |
| 187 | cmd); |
| 188 | } |
| 189 | |
Andrew Lunn | 0df960f | 2020-05-10 21:12:35 +0200 | [diff] [blame] | 190 | int ethnl_multicast(struct sk_buff *skb, struct net_device *dev) |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 191 | { |
| 192 | return genlmsg_multicast_netns(ðtool_genl_family, dev_net(dev), skb, |
| 193 | 0, ETHNL_MCGRP_MONITOR, GFP_KERNEL); |
| 194 | } |
| 195 | |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 196 | /* GET request helpers */ |
| 197 | |
| 198 | /** |
| 199 | * struct ethnl_dump_ctx - context structure for generic dumpit() callback |
Michal Kubecek | d2c4b44 | 2020-01-26 23:11:01 +0100 | [diff] [blame] | 200 | * @ops: request ops of currently processed message type |
| 201 | * @req_info: parsed request header of processed request |
| 202 | * @reply_data: data needed to compose the reply |
| 203 | * @pos_hash: saved iteration position - hashbucket |
| 204 | * @pos_idx: saved iteration position - index |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 205 | * |
| 206 | * These parameters are kept in struct netlink_callback as context preserved |
| 207 | * between iterations. They are initialized by ethnl_default_start() and used |
| 208 | * in ethnl_default_dumpit() and ethnl_default_done(). |
| 209 | */ |
| 210 | struct ethnl_dump_ctx { |
| 211 | const struct ethnl_request_ops *ops; |
| 212 | struct ethnl_req_info *req_info; |
| 213 | struct ethnl_reply_data *reply_data; |
| 214 | int pos_hash; |
| 215 | int pos_idx; |
| 216 | }; |
| 217 | |
| 218 | static const struct ethnl_request_ops * |
| 219 | ethnl_default_requests[__ETHTOOL_MSG_USER_CNT] = { |
Michal Kubecek | 71921690 | 2019-12-27 15:55:43 +0100 | [diff] [blame] | 220 | [ETHTOOL_MSG_STRSET_GET] = ðnl_strset_request_ops, |
Michal Kubecek | 459e0b8 | 2019-12-27 15:55:48 +0100 | [diff] [blame] | 221 | [ETHTOOL_MSG_LINKINFO_GET] = ðnl_linkinfo_request_ops, |
Michal Kubecek | f625aa9 | 2019-12-27 15:56:08 +0100 | [diff] [blame] | 222 | [ETHTOOL_MSG_LINKMODES_GET] = ðnl_linkmodes_request_ops, |
Michal Kubecek | 3d2b847 | 2019-12-27 15:56:23 +0100 | [diff] [blame] | 223 | [ETHTOOL_MSG_LINKSTATE_GET] = ðnl_linkstate_request_ops, |
Michal Kubecek | 6a94b8c | 2020-01-26 23:11:04 +0100 | [diff] [blame] | 224 | [ETHTOOL_MSG_DEBUG_GET] = ðnl_debug_request_ops, |
Michal Kubecek | 51ea22b | 2020-01-26 23:11:13 +0100 | [diff] [blame] | 225 | [ETHTOOL_MSG_WOL_GET] = ðnl_wol_request_ops, |
Michal Kubecek | 0524399 | 2020-03-12 21:07:48 +0100 | [diff] [blame] | 226 | [ETHTOOL_MSG_FEATURES_GET] = ðnl_features_request_ops, |
Michal Kubecek | e16c338 | 2020-03-12 21:08:08 +0100 | [diff] [blame] | 227 | [ETHTOOL_MSG_PRIVFLAGS_GET] = ðnl_privflags_request_ops, |
Michal Kubecek | e4a1717 | 2020-03-12 21:08:23 +0100 | [diff] [blame] | 228 | [ETHTOOL_MSG_RINGS_GET] = ðnl_rings_request_ops, |
Michal Kubecek | 0c84979 | 2020-03-12 21:08:38 +0100 | [diff] [blame] | 229 | [ETHTOOL_MSG_CHANNELS_GET] = ðnl_channels_request_ops, |
Michal Kubecek | 2172754 | 2020-03-28 00:01:08 +0100 | [diff] [blame] | 230 | [ETHTOOL_MSG_COALESCE_GET] = ðnl_coalesce_request_ops, |
Michal Kubecek | 7f59fb3 | 2020-03-28 00:01:23 +0100 | [diff] [blame] | 231 | [ETHTOOL_MSG_PAUSE_GET] = ðnl_pause_request_ops, |
Michal Kubecek | b7eeefe | 2020-03-28 00:01:38 +0100 | [diff] [blame] | 232 | [ETHTOOL_MSG_EEE_GET] = ðnl_eee_request_ops, |
Michal Kubecek | 5b071c5 | 2020-03-28 00:01:58 +0100 | [diff] [blame] | 233 | [ETHTOOL_MSG_TSINFO_GET] = ðnl_tsinfo_request_ops, |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 234 | }; |
| 235 | |
| 236 | static struct ethnl_dump_ctx *ethnl_dump_context(struct netlink_callback *cb) |
| 237 | { |
| 238 | return (struct ethnl_dump_ctx *)cb->ctx; |
| 239 | } |
| 240 | |
| 241 | /** |
| 242 | * ethnl_default_parse() - Parse request message |
| 243 | * @req_info: pointer to structure to put data into |
| 244 | * @nlhdr: pointer to request message header |
| 245 | * @net: request netns |
| 246 | * @request_ops: struct request_ops for request type |
| 247 | * @extack: netlink extack for error reporting |
| 248 | * @require_dev: fail if no device identified in header |
| 249 | * |
| 250 | * Parse universal request header and call request specific ->parse_request() |
| 251 | * callback (if defined) to parse the rest of the message. |
| 252 | * |
| 253 | * Return: 0 on success or negative error code |
| 254 | */ |
| 255 | static int ethnl_default_parse(struct ethnl_req_info *req_info, |
| 256 | const struct nlmsghdr *nlhdr, struct net *net, |
| 257 | const struct ethnl_request_ops *request_ops, |
| 258 | struct netlink_ext_ack *extack, bool require_dev) |
| 259 | { |
| 260 | struct nlattr **tb; |
| 261 | int ret; |
| 262 | |
| 263 | tb = kmalloc_array(request_ops->max_attr + 1, sizeof(tb[0]), |
| 264 | GFP_KERNEL); |
| 265 | if (!tb) |
| 266 | return -ENOMEM; |
| 267 | |
| 268 | ret = nlmsg_parse(nlhdr, GENL_HDRLEN, tb, request_ops->max_attr, |
| 269 | request_ops->request_policy, extack); |
| 270 | if (ret < 0) |
| 271 | goto out; |
Michal Kubecek | 9813054 | 2020-03-12 21:07:38 +0100 | [diff] [blame] | 272 | ret = ethnl_parse_header_dev_get(req_info, tb[request_ops->hdr_attr], |
| 273 | net, extack, require_dev); |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 274 | if (ret < 0) |
| 275 | goto out; |
| 276 | |
| 277 | if (request_ops->parse_request) { |
| 278 | ret = request_ops->parse_request(req_info, tb, extack); |
| 279 | if (ret < 0) |
| 280 | goto out; |
| 281 | } |
| 282 | |
| 283 | ret = 0; |
| 284 | out: |
| 285 | kfree(tb); |
| 286 | return ret; |
| 287 | } |
| 288 | |
| 289 | /** |
| 290 | * ethnl_init_reply_data() - Initialize reply data for GET request |
Michal Kubecek | d2c4b44 | 2020-01-26 23:11:01 +0100 | [diff] [blame] | 291 | * @reply_data: pointer to embedded struct ethnl_reply_data |
| 292 | * @ops: instance of struct ethnl_request_ops describing the layout |
| 293 | * @dev: network device to initialize the reply for |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 294 | * |
| 295 | * Fills the reply data part with zeros and sets the dev member. Must be called |
| 296 | * before calling the ->fill_reply() callback (for each iteration when handling |
| 297 | * dump requests). |
| 298 | */ |
| 299 | static void ethnl_init_reply_data(struct ethnl_reply_data *reply_data, |
| 300 | const struct ethnl_request_ops *ops, |
| 301 | struct net_device *dev) |
| 302 | { |
| 303 | memset(reply_data, 0, ops->reply_data_size); |
| 304 | reply_data->dev = dev; |
| 305 | } |
| 306 | |
| 307 | /* default ->doit() handler for GET type requests */ |
| 308 | static int ethnl_default_doit(struct sk_buff *skb, struct genl_info *info) |
| 309 | { |
| 310 | struct ethnl_reply_data *reply_data = NULL; |
| 311 | struct ethnl_req_info *req_info = NULL; |
| 312 | const u8 cmd = info->genlhdr->cmd; |
| 313 | const struct ethnl_request_ops *ops; |
| 314 | struct sk_buff *rskb; |
| 315 | void *reply_payload; |
| 316 | int reply_len; |
| 317 | int ret; |
| 318 | |
| 319 | ops = ethnl_default_requests[cmd]; |
| 320 | if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", cmd)) |
| 321 | return -EOPNOTSUPP; |
| 322 | req_info = kzalloc(ops->req_info_size, GFP_KERNEL); |
| 323 | if (!req_info) |
| 324 | return -ENOMEM; |
| 325 | reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); |
| 326 | if (!reply_data) { |
| 327 | kfree(req_info); |
| 328 | return -ENOMEM; |
| 329 | } |
| 330 | |
| 331 | ret = ethnl_default_parse(req_info, info->nlhdr, genl_info_net(info), ops, |
| 332 | info->extack, !ops->allow_nodev_do); |
| 333 | if (ret < 0) |
| 334 | goto err_dev; |
| 335 | ethnl_init_reply_data(reply_data, ops, req_info->dev); |
| 336 | |
| 337 | rtnl_lock(); |
| 338 | ret = ops->prepare_data(req_info, reply_data, info); |
| 339 | rtnl_unlock(); |
| 340 | if (ret < 0) |
| 341 | goto err_cleanup; |
Dan Carpenter | d97772d | 2020-01-08 08:41:25 +0300 | [diff] [blame] | 342 | ret = ops->reply_size(req_info, reply_data); |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 343 | if (ret < 0) |
| 344 | goto err_cleanup; |
Michal Kubecek | 7c87e32 | 2020-05-10 21:04:09 +0200 | [diff] [blame] | 345 | reply_len = ret + ethnl_reply_header_size(); |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 346 | ret = -ENOMEM; |
| 347 | rskb = ethnl_reply_init(reply_len, req_info->dev, ops->reply_cmd, |
| 348 | ops->hdr_attr, info, &reply_payload); |
| 349 | if (!rskb) |
| 350 | goto err_cleanup; |
| 351 | ret = ops->fill_reply(rskb, req_info, reply_data); |
| 352 | if (ret < 0) |
| 353 | goto err_msg; |
| 354 | if (ops->cleanup_data) |
| 355 | ops->cleanup_data(reply_data); |
| 356 | |
| 357 | genlmsg_end(rskb, reply_payload); |
| 358 | if (req_info->dev) |
| 359 | dev_put(req_info->dev); |
| 360 | kfree(reply_data); |
| 361 | kfree(req_info); |
| 362 | return genlmsg_reply(rskb, info); |
| 363 | |
| 364 | err_msg: |
| 365 | WARN_ONCE(ret == -EMSGSIZE, "calculated message payload length (%d) not sufficient\n", reply_len); |
| 366 | nlmsg_free(rskb); |
| 367 | err_cleanup: |
| 368 | if (ops->cleanup_data) |
| 369 | ops->cleanup_data(reply_data); |
| 370 | err_dev: |
| 371 | if (req_info->dev) |
| 372 | dev_put(req_info->dev); |
| 373 | kfree(reply_data); |
| 374 | kfree(req_info); |
| 375 | return ret; |
| 376 | } |
| 377 | |
| 378 | static int ethnl_default_dump_one(struct sk_buff *skb, struct net_device *dev, |
| 379 | const struct ethnl_dump_ctx *ctx) |
| 380 | { |
| 381 | int ret; |
| 382 | |
| 383 | ethnl_init_reply_data(ctx->reply_data, ctx->ops, dev); |
| 384 | rtnl_lock(); |
| 385 | ret = ctx->ops->prepare_data(ctx->req_info, ctx->reply_data, NULL); |
| 386 | rtnl_unlock(); |
| 387 | if (ret < 0) |
| 388 | goto out; |
| 389 | ret = ethnl_fill_reply_header(skb, dev, ctx->ops->hdr_attr); |
| 390 | if (ret < 0) |
| 391 | goto out; |
| 392 | ret = ctx->ops->fill_reply(skb, ctx->req_info, ctx->reply_data); |
| 393 | |
| 394 | out: |
| 395 | if (ctx->ops->cleanup_data) |
| 396 | ctx->ops->cleanup_data(ctx->reply_data); |
| 397 | ctx->reply_data->dev = NULL; |
| 398 | return ret; |
| 399 | } |
| 400 | |
| 401 | /* Default ->dumpit() handler for GET requests. Device iteration copied from |
| 402 | * rtnl_dump_ifinfo(); we have to be more careful about device hashtable |
| 403 | * persistence as we cannot guarantee to hold RTNL lock through the whole |
| 404 | * function as rtnetnlink does. |
| 405 | */ |
| 406 | static int ethnl_default_dumpit(struct sk_buff *skb, |
| 407 | struct netlink_callback *cb) |
| 408 | { |
| 409 | struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); |
| 410 | struct net *net = sock_net(skb->sk); |
| 411 | int s_idx = ctx->pos_idx; |
| 412 | int h, idx = 0; |
| 413 | int ret = 0; |
| 414 | void *ehdr; |
| 415 | |
| 416 | rtnl_lock(); |
| 417 | for (h = ctx->pos_hash; h < NETDEV_HASHENTRIES; h++, s_idx = 0) { |
| 418 | struct hlist_head *head; |
| 419 | struct net_device *dev; |
| 420 | unsigned int seq; |
| 421 | |
| 422 | head = &net->dev_index_head[h]; |
| 423 | |
| 424 | restart_chain: |
| 425 | seq = net->dev_base_seq; |
| 426 | cb->seq = seq; |
| 427 | idx = 0; |
| 428 | hlist_for_each_entry(dev, head, index_hlist) { |
| 429 | if (idx < s_idx) |
| 430 | goto cont; |
| 431 | dev_hold(dev); |
| 432 | rtnl_unlock(); |
| 433 | |
| 434 | ehdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, |
| 435 | cb->nlh->nlmsg_seq, |
| 436 | ðtool_genl_family, 0, |
| 437 | ctx->ops->reply_cmd); |
| 438 | if (!ehdr) { |
| 439 | dev_put(dev); |
| 440 | ret = -EMSGSIZE; |
| 441 | goto out; |
| 442 | } |
| 443 | ret = ethnl_default_dump_one(skb, dev, ctx); |
| 444 | dev_put(dev); |
| 445 | if (ret < 0) { |
| 446 | genlmsg_cancel(skb, ehdr); |
| 447 | if (ret == -EOPNOTSUPP) |
| 448 | goto lock_and_cont; |
| 449 | if (likely(skb->len)) |
| 450 | ret = skb->len; |
| 451 | goto out; |
| 452 | } |
| 453 | genlmsg_end(skb, ehdr); |
| 454 | lock_and_cont: |
| 455 | rtnl_lock(); |
| 456 | if (net->dev_base_seq != seq) { |
| 457 | s_idx = idx + 1; |
| 458 | goto restart_chain; |
| 459 | } |
| 460 | cont: |
| 461 | idx++; |
| 462 | } |
| 463 | |
| 464 | } |
| 465 | rtnl_unlock(); |
| 466 | |
| 467 | out: |
| 468 | ctx->pos_hash = h; |
| 469 | ctx->pos_idx = idx; |
| 470 | nl_dump_check_consistent(cb, nlmsg_hdr(skb)); |
| 471 | |
| 472 | return ret; |
| 473 | } |
| 474 | |
| 475 | /* generic ->start() handler for GET requests */ |
| 476 | static int ethnl_default_start(struct netlink_callback *cb) |
| 477 | { |
| 478 | struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); |
| 479 | struct ethnl_reply_data *reply_data; |
| 480 | const struct ethnl_request_ops *ops; |
| 481 | struct ethnl_req_info *req_info; |
| 482 | struct genlmsghdr *ghdr; |
| 483 | int ret; |
| 484 | |
| 485 | BUILD_BUG_ON(sizeof(*ctx) > sizeof(cb->ctx)); |
| 486 | |
| 487 | ghdr = nlmsg_data(cb->nlh); |
| 488 | ops = ethnl_default_requests[ghdr->cmd]; |
| 489 | if (WARN_ONCE(!ops, "cmd %u has no ethnl_request_ops\n", ghdr->cmd)) |
| 490 | return -EOPNOTSUPP; |
| 491 | req_info = kzalloc(ops->req_info_size, GFP_KERNEL); |
| 492 | if (!req_info) |
| 493 | return -ENOMEM; |
| 494 | reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); |
| 495 | if (!reply_data) { |
Dan Carpenter | a6dd048 | 2020-01-08 08:39:48 +0300 | [diff] [blame] | 496 | ret = -ENOMEM; |
| 497 | goto free_req_info; |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 498 | } |
| 499 | |
| 500 | ret = ethnl_default_parse(req_info, cb->nlh, sock_net(cb->skb->sk), ops, |
| 501 | cb->extack, false); |
| 502 | if (req_info->dev) { |
| 503 | /* We ignore device specification in dump requests but as the |
| 504 | * same parser as for non-dump (doit) requests is used, it |
| 505 | * would take reference to the device if it finds one |
| 506 | */ |
| 507 | dev_put(req_info->dev); |
| 508 | req_info->dev = NULL; |
| 509 | } |
| 510 | if (ret < 0) |
Dan Carpenter | a6dd048 | 2020-01-08 08:39:48 +0300 | [diff] [blame] | 511 | goto free_reply_data; |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 512 | |
| 513 | ctx->ops = ops; |
| 514 | ctx->req_info = req_info; |
| 515 | ctx->reply_data = reply_data; |
| 516 | ctx->pos_hash = 0; |
| 517 | ctx->pos_idx = 0; |
| 518 | |
| 519 | return 0; |
Dan Carpenter | a6dd048 | 2020-01-08 08:39:48 +0300 | [diff] [blame] | 520 | |
| 521 | free_reply_data: |
| 522 | kfree(reply_data); |
| 523 | free_req_info: |
| 524 | kfree(req_info); |
| 525 | |
| 526 | return ret; |
Michal Kubecek | 728480f | 2019-12-27 15:55:38 +0100 | [diff] [blame] | 527 | } |
| 528 | |
| 529 | /* default ->done() handler for GET requests */ |
| 530 | static int ethnl_default_done(struct netlink_callback *cb) |
| 531 | { |
| 532 | struct ethnl_dump_ctx *ctx = ethnl_dump_context(cb); |
| 533 | |
| 534 | kfree(ctx->reply_data); |
| 535 | kfree(ctx->req_info); |
| 536 | |
| 537 | return 0; |
| 538 | } |
| 539 | |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 540 | static const struct ethnl_request_ops * |
| 541 | ethnl_default_notify_ops[ETHTOOL_MSG_KERNEL_MAX + 1] = { |
Michal Kubecek | 7328673 | 2019-12-27 15:56:03 +0100 | [diff] [blame] | 542 | [ETHTOOL_MSG_LINKINFO_NTF] = ðnl_linkinfo_request_ops, |
Michal Kubecek | 1b1b184 | 2019-12-27 15:56:18 +0100 | [diff] [blame] | 543 | [ETHTOOL_MSG_LINKMODES_NTF] = ðnl_linkmodes_request_ops, |
Michal Kubecek | 0bda7af | 2020-01-26 23:11:10 +0100 | [diff] [blame] | 544 | [ETHTOOL_MSG_DEBUG_NTF] = ðnl_debug_request_ops, |
Michal Kubecek | 67bffa7 | 2020-01-26 23:11:19 +0100 | [diff] [blame] | 545 | [ETHTOOL_MSG_WOL_NTF] = ðnl_wol_request_ops, |
Michal Kubecek | 9c6451e | 2020-03-12 21:08:03 +0100 | [diff] [blame] | 546 | [ETHTOOL_MSG_FEATURES_NTF] = ðnl_features_request_ops, |
Michal Kubecek | 111dcba | 2020-03-12 21:08:18 +0100 | [diff] [blame] | 547 | [ETHTOOL_MSG_PRIVFLAGS_NTF] = ðnl_privflags_request_ops, |
Michal Kubecek | bc9d1c9 | 2020-03-12 21:08:33 +0100 | [diff] [blame] | 548 | [ETHTOOL_MSG_RINGS_NTF] = ðnl_rings_request_ops, |
Michal Kubecek | 546379b | 2020-03-12 21:08:48 +0100 | [diff] [blame] | 549 | [ETHTOOL_MSG_CHANNELS_NTF] = ðnl_channels_request_ops, |
Michal Kubecek | 0cf3eac | 2020-03-28 00:01:18 +0100 | [diff] [blame] | 550 | [ETHTOOL_MSG_COALESCE_NTF] = ðnl_coalesce_request_ops, |
Michal Kubecek | bf37faa | 2020-03-28 00:01:33 +0100 | [diff] [blame] | 551 | [ETHTOOL_MSG_PAUSE_NTF] = ðnl_pause_request_ops, |
Michal Kubecek | 6c5bc8f | 2020-03-28 00:01:48 +0100 | [diff] [blame] | 552 | [ETHTOOL_MSG_EEE_NTF] = ðnl_eee_request_ops, |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 553 | }; |
| 554 | |
| 555 | /* default notification handler */ |
| 556 | static void ethnl_default_notify(struct net_device *dev, unsigned int cmd, |
| 557 | const void *data) |
| 558 | { |
| 559 | struct ethnl_reply_data *reply_data; |
| 560 | const struct ethnl_request_ops *ops; |
| 561 | struct ethnl_req_info *req_info; |
| 562 | struct sk_buff *skb; |
| 563 | void *reply_payload; |
| 564 | int reply_len; |
| 565 | int ret; |
| 566 | |
| 567 | if (WARN_ONCE(cmd > ETHTOOL_MSG_KERNEL_MAX || |
| 568 | !ethnl_default_notify_ops[cmd], |
| 569 | "unexpected notification type %u\n", cmd)) |
| 570 | return; |
| 571 | ops = ethnl_default_notify_ops[cmd]; |
| 572 | req_info = kzalloc(ops->req_info_size, GFP_KERNEL); |
| 573 | if (!req_info) |
| 574 | return; |
| 575 | reply_data = kmalloc(ops->reply_data_size, GFP_KERNEL); |
| 576 | if (!reply_data) { |
| 577 | kfree(req_info); |
| 578 | return; |
| 579 | } |
| 580 | |
| 581 | req_info->dev = dev; |
| 582 | req_info->flags |= ETHTOOL_FLAG_COMPACT_BITSETS; |
| 583 | |
| 584 | ethnl_init_reply_data(reply_data, ops, dev); |
| 585 | ret = ops->prepare_data(req_info, reply_data, NULL); |
| 586 | if (ret < 0) |
| 587 | goto err_cleanup; |
Dan Carpenter | d97772d | 2020-01-08 08:41:25 +0300 | [diff] [blame] | 588 | ret = ops->reply_size(req_info, reply_data); |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 589 | if (ret < 0) |
| 590 | goto err_cleanup; |
Michal Kubecek | 7c87e32 | 2020-05-10 21:04:09 +0200 | [diff] [blame] | 591 | reply_len = ret + ethnl_reply_header_size(); |
Michal Kubecek | 5cf2a54 | 2019-12-27 15:55:58 +0100 | [diff] [blame] | 592 | ret = -ENOMEM; |
| 593 | skb = genlmsg_new(reply_len, GFP_KERNEL); |
| 594 | if (!skb) |
| 595 | goto err_cleanup; |
| 596 | reply_payload = ethnl_bcastmsg_put(skb, cmd); |
| 597 | if (!reply_payload) |
| 598 | goto err_skb; |
| 599 | ret = ethnl_fill_reply_header(skb, dev, ops->hdr_attr); |
| 600 | if (ret < 0) |
| 601 | goto err_msg; |
| 602 | ret = ops->fill_reply(skb, req_info, reply_data); |
| 603 | if (ret < 0) |
| 604 | goto err_msg; |
| 605 | if (ops->cleanup_data) |
| 606 | ops->cleanup_data(reply_data); |
| 607 | |
| 608 | genlmsg_end(skb, reply_payload); |
| 609 | kfree(reply_data); |
| 610 | kfree(req_info); |
| 611 | ethnl_multicast(skb, dev); |
| 612 | return; |
| 613 | |
| 614 | err_msg: |
| 615 | WARN_ONCE(ret == -EMSGSIZE, |
| 616 | "calculated message payload length (%d) not sufficient\n", |
| 617 | reply_len); |
| 618 | err_skb: |
| 619 | nlmsg_free(skb); |
| 620 | err_cleanup: |
| 621 | if (ops->cleanup_data) |
| 622 | ops->cleanup_data(reply_data); |
| 623 | kfree(reply_data); |
| 624 | kfree(req_info); |
| 625 | return; |
| 626 | } |
| 627 | |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 628 | /* notifications */ |
| 629 | |
| 630 | typedef void (*ethnl_notify_handler_t)(struct net_device *dev, unsigned int cmd, |
| 631 | const void *data); |
| 632 | |
| 633 | static const ethnl_notify_handler_t ethnl_notify_handlers[] = { |
Michal Kubecek | 7328673 | 2019-12-27 15:56:03 +0100 | [diff] [blame] | 634 | [ETHTOOL_MSG_LINKINFO_NTF] = ethnl_default_notify, |
Michal Kubecek | 1b1b184 | 2019-12-27 15:56:18 +0100 | [diff] [blame] | 635 | [ETHTOOL_MSG_LINKMODES_NTF] = ethnl_default_notify, |
Michal Kubecek | 0bda7af | 2020-01-26 23:11:10 +0100 | [diff] [blame] | 636 | [ETHTOOL_MSG_DEBUG_NTF] = ethnl_default_notify, |
Michal Kubecek | 67bffa7 | 2020-01-26 23:11:19 +0100 | [diff] [blame] | 637 | [ETHTOOL_MSG_WOL_NTF] = ethnl_default_notify, |
Michal Kubecek | 9c6451e | 2020-03-12 21:08:03 +0100 | [diff] [blame] | 638 | [ETHTOOL_MSG_FEATURES_NTF] = ethnl_default_notify, |
Michal Kubecek | 111dcba | 2020-03-12 21:08:18 +0100 | [diff] [blame] | 639 | [ETHTOOL_MSG_PRIVFLAGS_NTF] = ethnl_default_notify, |
Michal Kubecek | bc9d1c9 | 2020-03-12 21:08:33 +0100 | [diff] [blame] | 640 | [ETHTOOL_MSG_RINGS_NTF] = ethnl_default_notify, |
Michal Kubecek | 546379b | 2020-03-12 21:08:48 +0100 | [diff] [blame] | 641 | [ETHTOOL_MSG_CHANNELS_NTF] = ethnl_default_notify, |
Michal Kubecek | 0cf3eac | 2020-03-28 00:01:18 +0100 | [diff] [blame] | 642 | [ETHTOOL_MSG_COALESCE_NTF] = ethnl_default_notify, |
Michal Kubecek | bf37faa | 2020-03-28 00:01:33 +0100 | [diff] [blame] | 643 | [ETHTOOL_MSG_PAUSE_NTF] = ethnl_default_notify, |
Michal Kubecek | 6c5bc8f | 2020-03-28 00:01:48 +0100 | [diff] [blame] | 644 | [ETHTOOL_MSG_EEE_NTF] = ethnl_default_notify, |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 645 | }; |
| 646 | |
| 647 | void ethtool_notify(struct net_device *dev, unsigned int cmd, const void *data) |
| 648 | { |
| 649 | if (unlikely(!ethnl_ok)) |
| 650 | return; |
| 651 | ASSERT_RTNL(); |
| 652 | |
| 653 | if (likely(cmd < ARRAY_SIZE(ethnl_notify_handlers) && |
| 654 | ethnl_notify_handlers[cmd])) |
| 655 | ethnl_notify_handlers[cmd](dev, cmd, data); |
| 656 | else |
| 657 | WARN_ONCE(1, "notification %u not implemented (dev=%s)\n", |
| 658 | cmd, netdev_name(dev)); |
| 659 | } |
| 660 | EXPORT_SYMBOL(ethtool_notify); |
| 661 | |
Michal Kubecek | 9c6451e | 2020-03-12 21:08:03 +0100 | [diff] [blame] | 662 | static void ethnl_notify_features(struct netdev_notifier_info *info) |
| 663 | { |
| 664 | struct net_device *dev = netdev_notifier_info_to_dev(info); |
| 665 | |
| 666 | ethtool_notify(dev, ETHTOOL_MSG_FEATURES_NTF, NULL); |
| 667 | } |
| 668 | |
| 669 | static int ethnl_netdev_event(struct notifier_block *this, unsigned long event, |
| 670 | void *ptr) |
| 671 | { |
| 672 | switch (event) { |
| 673 | case NETDEV_FEAT_CHANGE: |
| 674 | ethnl_notify_features(ptr); |
| 675 | break; |
| 676 | } |
| 677 | |
| 678 | return NOTIFY_DONE; |
| 679 | } |
| 680 | |
| 681 | static struct notifier_block ethnl_netdev_notifier = { |
| 682 | .notifier_call = ethnl_netdev_event, |
| 683 | }; |
| 684 | |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 685 | /* genetlink setup */ |
| 686 | |
| 687 | static const struct genl_ops ethtool_genl_ops[] = { |
Michal Kubecek | 71921690 | 2019-12-27 15:55:43 +0100 | [diff] [blame] | 688 | { |
| 689 | .cmd = ETHTOOL_MSG_STRSET_GET, |
| 690 | .doit = ethnl_default_doit, |
| 691 | .start = ethnl_default_start, |
| 692 | .dumpit = ethnl_default_dumpit, |
| 693 | .done = ethnl_default_done, |
| 694 | }, |
Michal Kubecek | 459e0b8 | 2019-12-27 15:55:48 +0100 | [diff] [blame] | 695 | { |
| 696 | .cmd = ETHTOOL_MSG_LINKINFO_GET, |
| 697 | .doit = ethnl_default_doit, |
| 698 | .start = ethnl_default_start, |
| 699 | .dumpit = ethnl_default_dumpit, |
| 700 | .done = ethnl_default_done, |
| 701 | }, |
Michal Kubecek | a53f3d4 | 2019-12-27 15:55:53 +0100 | [diff] [blame] | 702 | { |
| 703 | .cmd = ETHTOOL_MSG_LINKINFO_SET, |
| 704 | .flags = GENL_UNS_ADMIN_PERM, |
| 705 | .doit = ethnl_set_linkinfo, |
| 706 | }, |
Michal Kubecek | f625aa9 | 2019-12-27 15:56:08 +0100 | [diff] [blame] | 707 | { |
| 708 | .cmd = ETHTOOL_MSG_LINKMODES_GET, |
| 709 | .doit = ethnl_default_doit, |
| 710 | .start = ethnl_default_start, |
| 711 | .dumpit = ethnl_default_dumpit, |
| 712 | .done = ethnl_default_done, |
| 713 | }, |
Michal Kubecek | bfbcfe2 | 2019-12-27 15:56:13 +0100 | [diff] [blame] | 714 | { |
| 715 | .cmd = ETHTOOL_MSG_LINKMODES_SET, |
| 716 | .flags = GENL_UNS_ADMIN_PERM, |
| 717 | .doit = ethnl_set_linkmodes, |
| 718 | }, |
Michal Kubecek | 3d2b847 | 2019-12-27 15:56:23 +0100 | [diff] [blame] | 719 | { |
| 720 | .cmd = ETHTOOL_MSG_LINKSTATE_GET, |
| 721 | .doit = ethnl_default_doit, |
| 722 | .start = ethnl_default_start, |
| 723 | .dumpit = ethnl_default_dumpit, |
| 724 | .done = ethnl_default_done, |
| 725 | }, |
Michal Kubecek | 6a94b8c | 2020-01-26 23:11:04 +0100 | [diff] [blame] | 726 | { |
| 727 | .cmd = ETHTOOL_MSG_DEBUG_GET, |
| 728 | .doit = ethnl_default_doit, |
| 729 | .start = ethnl_default_start, |
| 730 | .dumpit = ethnl_default_dumpit, |
| 731 | .done = ethnl_default_done, |
| 732 | }, |
Michal Kubecek | e54d04e | 2020-01-26 23:11:07 +0100 | [diff] [blame] | 733 | { |
| 734 | .cmd = ETHTOOL_MSG_DEBUG_SET, |
| 735 | .flags = GENL_UNS_ADMIN_PERM, |
| 736 | .doit = ethnl_set_debug, |
| 737 | }, |
Michal Kubecek | 51ea22b | 2020-01-26 23:11:13 +0100 | [diff] [blame] | 738 | { |
| 739 | .cmd = ETHTOOL_MSG_WOL_GET, |
| 740 | .flags = GENL_UNS_ADMIN_PERM, |
| 741 | .doit = ethnl_default_doit, |
| 742 | .start = ethnl_default_start, |
| 743 | .dumpit = ethnl_default_dumpit, |
| 744 | .done = ethnl_default_done, |
| 745 | }, |
Michal Kubecek | 8d425b1 | 2020-01-26 23:11:16 +0100 | [diff] [blame] | 746 | { |
| 747 | .cmd = ETHTOOL_MSG_WOL_SET, |
| 748 | .flags = GENL_UNS_ADMIN_PERM, |
| 749 | .doit = ethnl_set_wol, |
| 750 | }, |
Michal Kubecek | 0524399 | 2020-03-12 21:07:48 +0100 | [diff] [blame] | 751 | { |
| 752 | .cmd = ETHTOOL_MSG_FEATURES_GET, |
| 753 | .doit = ethnl_default_doit, |
| 754 | .start = ethnl_default_start, |
| 755 | .dumpit = ethnl_default_dumpit, |
| 756 | .done = ethnl_default_done, |
| 757 | }, |
Michal Kubecek | 0980bfc | 2020-03-12 21:07:58 +0100 | [diff] [blame] | 758 | { |
| 759 | .cmd = ETHTOOL_MSG_FEATURES_SET, |
| 760 | .flags = GENL_UNS_ADMIN_PERM, |
| 761 | .doit = ethnl_set_features, |
| 762 | }, |
Michal Kubecek | e16c338 | 2020-03-12 21:08:08 +0100 | [diff] [blame] | 763 | { |
| 764 | .cmd = ETHTOOL_MSG_PRIVFLAGS_GET, |
| 765 | .doit = ethnl_default_doit, |
| 766 | .start = ethnl_default_start, |
| 767 | .dumpit = ethnl_default_dumpit, |
| 768 | .done = ethnl_default_done, |
| 769 | }, |
Michal Kubecek | f265d79 | 2020-03-12 21:08:13 +0100 | [diff] [blame] | 770 | { |
| 771 | .cmd = ETHTOOL_MSG_PRIVFLAGS_SET, |
| 772 | .flags = GENL_UNS_ADMIN_PERM, |
| 773 | .doit = ethnl_set_privflags, |
| 774 | }, |
Michal Kubecek | e4a1717 | 2020-03-12 21:08:23 +0100 | [diff] [blame] | 775 | { |
| 776 | .cmd = ETHTOOL_MSG_RINGS_GET, |
| 777 | .doit = ethnl_default_doit, |
| 778 | .start = ethnl_default_start, |
| 779 | .dumpit = ethnl_default_dumpit, |
| 780 | .done = ethnl_default_done, |
| 781 | }, |
Michal Kubecek | 2fc2929 | 2020-03-12 21:08:28 +0100 | [diff] [blame] | 782 | { |
| 783 | .cmd = ETHTOOL_MSG_RINGS_SET, |
| 784 | .flags = GENL_UNS_ADMIN_PERM, |
| 785 | .doit = ethnl_set_rings, |
| 786 | }, |
Michal Kubecek | 0c84979 | 2020-03-12 21:08:38 +0100 | [diff] [blame] | 787 | { |
| 788 | .cmd = ETHTOOL_MSG_CHANNELS_GET, |
| 789 | .doit = ethnl_default_doit, |
| 790 | .start = ethnl_default_start, |
| 791 | .dumpit = ethnl_default_dumpit, |
| 792 | .done = ethnl_default_done, |
| 793 | }, |
Michal Kubecek | e19c591 | 2020-03-12 21:08:43 +0100 | [diff] [blame] | 794 | { |
| 795 | .cmd = ETHTOOL_MSG_CHANNELS_SET, |
| 796 | .flags = GENL_UNS_ADMIN_PERM, |
| 797 | .doit = ethnl_set_channels, |
| 798 | }, |
Michal Kubecek | 2172754 | 2020-03-28 00:01:08 +0100 | [diff] [blame] | 799 | { |
| 800 | .cmd = ETHTOOL_MSG_COALESCE_GET, |
| 801 | .doit = ethnl_default_doit, |
| 802 | .start = ethnl_default_start, |
| 803 | .dumpit = ethnl_default_dumpit, |
| 804 | .done = ethnl_default_done, |
| 805 | }, |
Michal Kubecek | 9881418 | 2020-03-28 00:01:13 +0100 | [diff] [blame] | 806 | { |
| 807 | .cmd = ETHTOOL_MSG_COALESCE_SET, |
| 808 | .flags = GENL_UNS_ADMIN_PERM, |
| 809 | .doit = ethnl_set_coalesce, |
| 810 | }, |
Michal Kubecek | 7f59fb3 | 2020-03-28 00:01:23 +0100 | [diff] [blame] | 811 | { |
| 812 | .cmd = ETHTOOL_MSG_PAUSE_GET, |
| 813 | .doit = ethnl_default_doit, |
| 814 | .start = ethnl_default_start, |
| 815 | .dumpit = ethnl_default_dumpit, |
| 816 | .done = ethnl_default_done, |
| 817 | }, |
Michal Kubecek | 3ab8799 | 2020-03-28 00:01:28 +0100 | [diff] [blame] | 818 | { |
| 819 | .cmd = ETHTOOL_MSG_PAUSE_SET, |
| 820 | .flags = GENL_UNS_ADMIN_PERM, |
| 821 | .doit = ethnl_set_pause, |
| 822 | }, |
Michal Kubecek | b7eeefe | 2020-03-28 00:01:38 +0100 | [diff] [blame] | 823 | { |
| 824 | .cmd = ETHTOOL_MSG_EEE_GET, |
| 825 | .doit = ethnl_default_doit, |
| 826 | .start = ethnl_default_start, |
| 827 | .dumpit = ethnl_default_dumpit, |
| 828 | .done = ethnl_default_done, |
| 829 | }, |
Michal Kubecek | fd77be7 | 2020-03-28 00:01:43 +0100 | [diff] [blame] | 830 | { |
| 831 | .cmd = ETHTOOL_MSG_EEE_SET, |
| 832 | .flags = GENL_UNS_ADMIN_PERM, |
| 833 | .doit = ethnl_set_eee, |
| 834 | }, |
Michal Kubecek | 5b071c5 | 2020-03-28 00:01:58 +0100 | [diff] [blame] | 835 | { |
| 836 | .cmd = ETHTOOL_MSG_TSINFO_GET, |
| 837 | .doit = ethnl_default_doit, |
| 838 | .start = ethnl_default_start, |
| 839 | .dumpit = ethnl_default_dumpit, |
| 840 | .done = ethnl_default_done, |
| 841 | }, |
Andrew Lunn | 11ca3c42 | 2020-05-10 21:12:33 +0200 | [diff] [blame] | 842 | { |
| 843 | .cmd = ETHTOOL_MSG_CABLE_TEST_ACT, |
| 844 | .flags = GENL_UNS_ADMIN_PERM, |
| 845 | .doit = ethnl_act_cable_test, |
| 846 | }, |
Andrew Lunn | 1a644de | 2020-05-27 00:21:38 +0200 | [diff] [blame] | 847 | { |
| 848 | .cmd = ETHTOOL_MSG_CABLE_TEST_TDR_ACT, |
| 849 | .flags = GENL_UNS_ADMIN_PERM, |
| 850 | .doit = ethnl_act_cable_test_tdr, |
| 851 | }, |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 852 | }; |
| 853 | |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 854 | static const struct genl_multicast_group ethtool_nl_mcgrps[] = { |
| 855 | [ETHNL_MCGRP_MONITOR] = { .name = ETHTOOL_MCGRP_MONITOR_NAME }, |
| 856 | }; |
| 857 | |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 858 | static struct genl_family ethtool_genl_family = { |
| 859 | .name = ETHTOOL_GENL_NAME, |
| 860 | .version = ETHTOOL_GENL_VERSION, |
| 861 | .netnsok = true, |
| 862 | .parallel_ops = true, |
| 863 | .ops = ethtool_genl_ops, |
| 864 | .n_ops = ARRAY_SIZE(ethtool_genl_ops), |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 865 | .mcgrps = ethtool_nl_mcgrps, |
| 866 | .n_mcgrps = ARRAY_SIZE(ethtool_nl_mcgrps), |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 867 | }; |
| 868 | |
| 869 | /* module setup */ |
| 870 | |
| 871 | static int __init ethnl_init(void) |
| 872 | { |
| 873 | int ret; |
| 874 | |
| 875 | ret = genl_register_family(ðtool_genl_family); |
| 876 | if (WARN(ret < 0, "ethtool: genetlink family registration failed")) |
| 877 | return ret; |
Michal Kubecek | 6b08d6c | 2019-12-27 15:55:33 +0100 | [diff] [blame] | 878 | ethnl_ok = true; |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 879 | |
Michal Kubecek | 9c6451e | 2020-03-12 21:08:03 +0100 | [diff] [blame] | 880 | ret = register_netdevice_notifier(ðnl_netdev_notifier); |
| 881 | WARN(ret < 0, "ethtool: net device notifier registration failed"); |
| 882 | return ret; |
Michal Kubecek | 2b4a899 | 2019-12-27 15:55:18 +0100 | [diff] [blame] | 883 | } |
| 884 | |
| 885 | subsys_initcall(ethnl_init); |