Greg Kroah-Hartman | b244131 | 2017-11-01 15:07:57 +0100 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0 |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 2 | #include <linux/kmod.h> |
| 3 | #include <linux/netdevice.h> |
| 4 | #include <linux/etherdevice.h> |
| 5 | #include <linux/rtnetlink.h> |
| 6 | #include <linux/net_tstamp.h> |
| 7 | #include <linux/wireless.h> |
| 8 | #include <net/wext.h> |
| 9 | |
| 10 | /* |
| 11 | * Map an interface index to its name (SIOCGIFNAME) |
| 12 | */ |
| 13 | |
| 14 | /* |
| 15 | * We need this ioctl for efficient implementation of the |
| 16 | * if_indextoname() function required by the IPv6 API. Without |
| 17 | * it, we would have to search all the interfaces to find a |
| 18 | * match. --pb |
| 19 | */ |
| 20 | |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 21 | static int dev_ifname(struct net *net, struct ifreq *ifr) |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 22 | { |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 23 | ifr->ifr_name[IFNAMSIZ-1] = 0; |
| 24 | return netdev_get_name(net, ifr->ifr_name, ifr->ifr_ifindex); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 25 | } |
| 26 | |
| 27 | static gifconf_func_t *gifconf_list[NPROTO]; |
| 28 | |
| 29 | /** |
| 30 | * register_gifconf - register a SIOCGIF handler |
| 31 | * @family: Address family |
| 32 | * @gifconf: Function handler |
| 33 | * |
| 34 | * Register protocol dependent address dumping routines. The handler |
| 35 | * that is passed must not be freed or reused until it has been replaced |
| 36 | * by another handler. |
| 37 | */ |
| 38 | int register_gifconf(unsigned int family, gifconf_func_t *gifconf) |
| 39 | { |
| 40 | if (family >= NPROTO) |
| 41 | return -EINVAL; |
| 42 | gifconf_list[family] = gifconf; |
| 43 | return 0; |
| 44 | } |
| 45 | EXPORT_SYMBOL(register_gifconf); |
| 46 | |
| 47 | /* |
| 48 | * Perform a SIOCGIFCONF call. This structure will change |
| 49 | * size eventually, and there is nothing I can do about it. |
| 50 | * Thus we will need a 'compatibility mode'. |
| 51 | */ |
| 52 | |
Al Viro | 36fd633 | 2017-06-26 13:19:16 -0400 | [diff] [blame] | 53 | int dev_ifconf(struct net *net, struct ifconf *ifc, int size) |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 54 | { |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 55 | struct net_device *dev; |
| 56 | char __user *pos; |
| 57 | int len; |
| 58 | int total; |
| 59 | int i; |
| 60 | |
| 61 | /* |
| 62 | * Fetch the caller's info block. |
| 63 | */ |
| 64 | |
Al Viro | 36fd633 | 2017-06-26 13:19:16 -0400 | [diff] [blame] | 65 | pos = ifc->ifc_buf; |
| 66 | len = ifc->ifc_len; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 67 | |
| 68 | /* |
| 69 | * Loop over the interfaces, and write an info block for each. |
| 70 | */ |
| 71 | |
| 72 | total = 0; |
| 73 | for_each_netdev(net, dev) { |
| 74 | for (i = 0; i < NPROTO; i++) { |
| 75 | if (gifconf_list[i]) { |
| 76 | int done; |
| 77 | if (!pos) |
Al Viro | 36fd633 | 2017-06-26 13:19:16 -0400 | [diff] [blame] | 78 | done = gifconf_list[i](dev, NULL, 0, size); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 79 | else |
| 80 | done = gifconf_list[i](dev, pos + total, |
Al Viro | 36fd633 | 2017-06-26 13:19:16 -0400 | [diff] [blame] | 81 | len - total, size); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 82 | if (done < 0) |
| 83 | return -EFAULT; |
| 84 | total += done; |
| 85 | } |
| 86 | } |
| 87 | } |
| 88 | |
| 89 | /* |
| 90 | * All done. Write the updated control block back to the caller. |
| 91 | */ |
Al Viro | 36fd633 | 2017-06-26 13:19:16 -0400 | [diff] [blame] | 92 | ifc->ifc_len = total; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 93 | |
| 94 | /* |
| 95 | * Both BSD and Solaris return 0 here, so we do too. |
| 96 | */ |
Al Viro | 36fd633 | 2017-06-26 13:19:16 -0400 | [diff] [blame] | 97 | return 0; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 98 | } |
| 99 | |
| 100 | /* |
| 101 | * Perform the SIOCxIFxxx calls, inside rcu_read_lock() |
| 102 | */ |
| 103 | static int dev_ifsioc_locked(struct net *net, struct ifreq *ifr, unsigned int cmd) |
| 104 | { |
| 105 | int err; |
| 106 | struct net_device *dev = dev_get_by_name_rcu(net, ifr->ifr_name); |
| 107 | |
| 108 | if (!dev) |
| 109 | return -ENODEV; |
| 110 | |
| 111 | switch (cmd) { |
| 112 | case SIOCGIFFLAGS: /* Get interface flags */ |
| 113 | ifr->ifr_flags = (short) dev_get_flags(dev); |
| 114 | return 0; |
| 115 | |
| 116 | case SIOCGIFMETRIC: /* Get the metric on the interface |
| 117 | (currently unused) */ |
| 118 | ifr->ifr_metric = 0; |
| 119 | return 0; |
| 120 | |
| 121 | case SIOCGIFMTU: /* Get the MTU of a device */ |
| 122 | ifr->ifr_mtu = dev->mtu; |
| 123 | return 0; |
| 124 | |
| 125 | case SIOCGIFHWADDR: |
| 126 | if (!dev->addr_len) |
Fabian Frederick | 54aeba7 | 2014-11-17 22:23:17 +0100 | [diff] [blame] | 127 | memset(ifr->ifr_hwaddr.sa_data, 0, |
| 128 | sizeof(ifr->ifr_hwaddr.sa_data)); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 129 | else |
| 130 | memcpy(ifr->ifr_hwaddr.sa_data, dev->dev_addr, |
Fabian Frederick | 54aeba7 | 2014-11-17 22:23:17 +0100 | [diff] [blame] | 131 | min(sizeof(ifr->ifr_hwaddr.sa_data), |
| 132 | (size_t)dev->addr_len)); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 133 | ifr->ifr_hwaddr.sa_family = dev->type; |
| 134 | return 0; |
| 135 | |
| 136 | case SIOCGIFSLAVE: |
| 137 | err = -EINVAL; |
| 138 | break; |
| 139 | |
| 140 | case SIOCGIFMAP: |
| 141 | ifr->ifr_map.mem_start = dev->mem_start; |
| 142 | ifr->ifr_map.mem_end = dev->mem_end; |
| 143 | ifr->ifr_map.base_addr = dev->base_addr; |
| 144 | ifr->ifr_map.irq = dev->irq; |
| 145 | ifr->ifr_map.dma = dev->dma; |
| 146 | ifr->ifr_map.port = dev->if_port; |
| 147 | return 0; |
| 148 | |
| 149 | case SIOCGIFINDEX: |
| 150 | ifr->ifr_ifindex = dev->ifindex; |
| 151 | return 0; |
| 152 | |
| 153 | case SIOCGIFTXQLEN: |
| 154 | ifr->ifr_qlen = dev->tx_queue_len; |
| 155 | return 0; |
| 156 | |
| 157 | default: |
| 158 | /* dev_ioctl() should ensure this case |
| 159 | * is never reached |
| 160 | */ |
| 161 | WARN_ON(1); |
| 162 | err = -ENOTTY; |
| 163 | break; |
| 164 | |
| 165 | } |
| 166 | return err; |
| 167 | } |
| 168 | |
| 169 | static int net_hwtstamp_validate(struct ifreq *ifr) |
| 170 | { |
| 171 | struct hwtstamp_config cfg; |
| 172 | enum hwtstamp_tx_types tx_type; |
| 173 | enum hwtstamp_rx_filters rx_filter; |
| 174 | int tx_type_valid = 0; |
| 175 | int rx_filter_valid = 0; |
| 176 | |
| 177 | if (copy_from_user(&cfg, ifr->ifr_data, sizeof(cfg))) |
| 178 | return -EFAULT; |
| 179 | |
| 180 | if (cfg.flags) /* reserved for future extensions */ |
| 181 | return -EINVAL; |
| 182 | |
| 183 | tx_type = cfg.tx_type; |
| 184 | rx_filter = cfg.rx_filter; |
| 185 | |
| 186 | switch (tx_type) { |
| 187 | case HWTSTAMP_TX_OFF: |
| 188 | case HWTSTAMP_TX_ON: |
| 189 | case HWTSTAMP_TX_ONESTEP_SYNC: |
| 190 | tx_type_valid = 1; |
| 191 | break; |
| 192 | } |
| 193 | |
| 194 | switch (rx_filter) { |
| 195 | case HWTSTAMP_FILTER_NONE: |
| 196 | case HWTSTAMP_FILTER_ALL: |
| 197 | case HWTSTAMP_FILTER_SOME: |
| 198 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: |
| 199 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: |
| 200 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: |
| 201 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: |
| 202 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: |
| 203 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: |
| 204 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: |
| 205 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: |
| 206 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: |
| 207 | case HWTSTAMP_FILTER_PTP_V2_EVENT: |
| 208 | case HWTSTAMP_FILTER_PTP_V2_SYNC: |
| 209 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: |
Miroslav Lichvar | b8210a9 | 2017-05-19 17:52:35 +0200 | [diff] [blame] | 210 | case HWTSTAMP_FILTER_NTP_ALL: |
Miroslav Lichvar | e341257 | 2017-05-19 17:52:36 +0200 | [diff] [blame] | 211 | rx_filter_valid = 1; |
Miroslav Lichvar | b8210a9 | 2017-05-19 17:52:35 +0200 | [diff] [blame] | 212 | break; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 213 | } |
| 214 | |
| 215 | if (!tx_type_valid || !rx_filter_valid) |
| 216 | return -ERANGE; |
| 217 | |
| 218 | return 0; |
| 219 | } |
| 220 | |
| 221 | /* |
| 222 | * Perform the SIOCxIFxxx calls, inside rtnl_lock() |
| 223 | */ |
| 224 | static int dev_ifsioc(struct net *net, struct ifreq *ifr, unsigned int cmd) |
| 225 | { |
| 226 | int err; |
| 227 | struct net_device *dev = __dev_get_by_name(net, ifr->ifr_name); |
| 228 | const struct net_device_ops *ops; |
| 229 | |
| 230 | if (!dev) |
| 231 | return -ENODEV; |
| 232 | |
| 233 | ops = dev->netdev_ops; |
| 234 | |
| 235 | switch (cmd) { |
| 236 | case SIOCSIFFLAGS: /* Set interface flags */ |
| 237 | return dev_change_flags(dev, ifr->ifr_flags); |
| 238 | |
| 239 | case SIOCSIFMETRIC: /* Set the metric on the interface |
| 240 | (currently unused) */ |
| 241 | return -EOPNOTSUPP; |
| 242 | |
| 243 | case SIOCSIFMTU: /* Set the MTU of a device */ |
| 244 | return dev_set_mtu(dev, ifr->ifr_mtu); |
| 245 | |
| 246 | case SIOCSIFHWADDR: |
WANG Cong | 0254e0c | 2017-07-26 15:22:06 -0700 | [diff] [blame] | 247 | if (dev->addr_len > sizeof(struct sockaddr)) |
| 248 | return -EINVAL; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 249 | return dev_set_mac_address(dev, &ifr->ifr_hwaddr); |
| 250 | |
| 251 | case SIOCSIFHWBROADCAST: |
| 252 | if (ifr->ifr_hwaddr.sa_family != dev->type) |
| 253 | return -EINVAL; |
| 254 | memcpy(dev->broadcast, ifr->ifr_hwaddr.sa_data, |
Fabian Frederick | 54aeba7 | 2014-11-17 22:23:17 +0100 | [diff] [blame] | 255 | min(sizeof(ifr->ifr_hwaddr.sa_data), |
| 256 | (size_t)dev->addr_len)); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 257 | call_netdevice_notifiers(NETDEV_CHANGEADDR, dev); |
| 258 | return 0; |
| 259 | |
| 260 | case SIOCSIFMAP: |
| 261 | if (ops->ndo_set_config) { |
| 262 | if (!netif_device_present(dev)) |
| 263 | return -ENODEV; |
| 264 | return ops->ndo_set_config(dev, &ifr->ifr_map); |
| 265 | } |
| 266 | return -EOPNOTSUPP; |
| 267 | |
| 268 | case SIOCADDMULTI: |
| 269 | if (!ops->ndo_set_rx_mode || |
| 270 | ifr->ifr_hwaddr.sa_family != AF_UNSPEC) |
| 271 | return -EINVAL; |
| 272 | if (!netif_device_present(dev)) |
| 273 | return -ENODEV; |
| 274 | return dev_mc_add_global(dev, ifr->ifr_hwaddr.sa_data); |
| 275 | |
| 276 | case SIOCDELMULTI: |
| 277 | if (!ops->ndo_set_rx_mode || |
| 278 | ifr->ifr_hwaddr.sa_family != AF_UNSPEC) |
| 279 | return -EINVAL; |
| 280 | if (!netif_device_present(dev)) |
| 281 | return -ENODEV; |
| 282 | return dev_mc_del_global(dev, ifr->ifr_hwaddr.sa_data); |
| 283 | |
| 284 | case SIOCSIFTXQLEN: |
| 285 | if (ifr->ifr_qlen < 0) |
| 286 | return -EINVAL; |
Xin Long | 823038c | 2017-10-16 19:43:15 +0800 | [diff] [blame] | 287 | if (dev->tx_queue_len ^ ifr->ifr_qlen) { |
Cong Wang | 3f76df1 | 2018-06-29 13:42:48 -0700 | [diff] [blame] | 288 | err = dev_change_tx_queue_len(dev, ifr->ifr_qlen); |
| 289 | if (err) |
Xin Long | 823038c | 2017-10-16 19:43:15 +0800 | [diff] [blame] | 290 | return err; |
Xin Long | 823038c | 2017-10-16 19:43:15 +0800 | [diff] [blame] | 291 | } |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 292 | return 0; |
| 293 | |
| 294 | case SIOCSIFNAME: |
| 295 | ifr->ifr_newname[IFNAMSIZ-1] = '\0'; |
| 296 | return dev_change_name(dev, ifr->ifr_newname); |
| 297 | |
| 298 | case SIOCSHWTSTAMP: |
| 299 | err = net_hwtstamp_validate(ifr); |
| 300 | if (err) |
| 301 | return err; |
| 302 | /* fall through */ |
| 303 | |
| 304 | /* |
| 305 | * Unknown or private ioctl |
| 306 | */ |
| 307 | default: |
| 308 | if ((cmd >= SIOCDEVPRIVATE && |
| 309 | cmd <= SIOCDEVPRIVATE + 15) || |
| 310 | cmd == SIOCBONDENSLAVE || |
| 311 | cmd == SIOCBONDRELEASE || |
| 312 | cmd == SIOCBONDSETHWADDR || |
| 313 | cmd == SIOCBONDSLAVEINFOQUERY || |
| 314 | cmd == SIOCBONDINFOQUERY || |
| 315 | cmd == SIOCBONDCHANGEACTIVE || |
| 316 | cmd == SIOCGMIIPHY || |
| 317 | cmd == SIOCGMIIREG || |
| 318 | cmd == SIOCSMIIREG || |
| 319 | cmd == SIOCBRADDIF || |
| 320 | cmd == SIOCBRDELIF || |
| 321 | cmd == SIOCSHWTSTAMP || |
Ben Hutchings | fd468c7 | 2013-11-14 01:19:29 +0000 | [diff] [blame] | 322 | cmd == SIOCGHWTSTAMP || |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 323 | cmd == SIOCWANDEV) { |
| 324 | err = -EOPNOTSUPP; |
| 325 | if (ops->ndo_do_ioctl) { |
| 326 | if (netif_device_present(dev)) |
| 327 | err = ops->ndo_do_ioctl(dev, ifr, cmd); |
| 328 | else |
| 329 | err = -ENODEV; |
| 330 | } |
| 331 | } else |
| 332 | err = -EINVAL; |
| 333 | |
| 334 | } |
| 335 | return err; |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * dev_load - load a network module |
| 340 | * @net: the applicable net namespace |
| 341 | * @name: name of interface |
| 342 | * |
| 343 | * If a network interface is not present and the process has suitable |
| 344 | * privileges this function loads the module. If module loading is not |
| 345 | * available in this kernel then it becomes a nop. |
| 346 | */ |
| 347 | |
| 348 | void dev_load(struct net *net, const char *name) |
| 349 | { |
| 350 | struct net_device *dev; |
| 351 | int no_module; |
| 352 | |
| 353 | rcu_read_lock(); |
| 354 | dev = dev_get_by_name_rcu(net, name); |
| 355 | rcu_read_unlock(); |
| 356 | |
| 357 | no_module = !dev; |
| 358 | if (no_module && capable(CAP_NET_ADMIN)) |
| 359 | no_module = request_module("netdev-%s", name); |
Daniel Borkmann | e020836 | 2014-09-02 23:30:05 +0200 | [diff] [blame] | 360 | if (no_module && capable(CAP_SYS_MODULE)) |
| 361 | request_module("%s", name); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 362 | } |
| 363 | EXPORT_SYMBOL(dev_load); |
| 364 | |
| 365 | /* |
| 366 | * This function handles all "interface"-type I/O control requests. The actual |
| 367 | * 'doing' part of this is dev_ifsioc above. |
| 368 | */ |
| 369 | |
| 370 | /** |
| 371 | * dev_ioctl - network device ioctl |
| 372 | * @net: the applicable net namespace |
| 373 | * @cmd: command to issue |
| 374 | * @arg: pointer to a struct ifreq in user space |
| 375 | * |
| 376 | * Issue ioctl functions to devices. This is normally called by the |
| 377 | * user space syscall interfaces but can sometimes be useful for |
| 378 | * other purposes. The return value is the return from the syscall if |
| 379 | * positive or a negative errno code on error. |
| 380 | */ |
| 381 | |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 382 | int dev_ioctl(struct net *net, unsigned int cmd, struct ifreq *ifr, bool *need_copyout) |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 383 | { |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 384 | int ret; |
| 385 | char *colon; |
| 386 | |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 387 | if (need_copyout) |
| 388 | *need_copyout = true; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 389 | if (cmd == SIOCGIFNAME) |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 390 | return dev_ifname(net, ifr); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 391 | |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 392 | ifr->ifr_name[IFNAMSIZ-1] = 0; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 393 | |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 394 | colon = strchr(ifr->ifr_name, ':'); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 395 | if (colon) |
| 396 | *colon = 0; |
| 397 | |
| 398 | /* |
| 399 | * See which interface the caller is talking about. |
| 400 | */ |
| 401 | |
| 402 | switch (cmd) { |
| 403 | /* |
| 404 | * These ioctl calls: |
| 405 | * - can be done by all. |
| 406 | * - atomic and do not require locking. |
| 407 | * - return a value |
| 408 | */ |
| 409 | case SIOCGIFFLAGS: |
| 410 | case SIOCGIFMETRIC: |
| 411 | case SIOCGIFMTU: |
| 412 | case SIOCGIFHWADDR: |
| 413 | case SIOCGIFSLAVE: |
| 414 | case SIOCGIFMAP: |
| 415 | case SIOCGIFINDEX: |
| 416 | case SIOCGIFTXQLEN: |
Paul Moore | b51f26b | 2018-03-06 17:27:44 -0500 | [diff] [blame] | 417 | dev_load(net, ifr->ifr_name); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 418 | rcu_read_lock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 419 | ret = dev_ifsioc_locked(net, ifr, cmd); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 420 | rcu_read_unlock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 421 | if (colon) |
| 422 | *colon = ':'; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 423 | return ret; |
| 424 | |
| 425 | case SIOCETHTOOL: |
Paul Moore | b51f26b | 2018-03-06 17:27:44 -0500 | [diff] [blame] | 426 | dev_load(net, ifr->ifr_name); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 427 | rtnl_lock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 428 | ret = dev_ethtool(net, ifr); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 429 | rtnl_unlock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 430 | if (colon) |
| 431 | *colon = ':'; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 432 | return ret; |
| 433 | |
| 434 | /* |
| 435 | * These ioctl calls: |
| 436 | * - require superuser power. |
| 437 | * - require strict serialization. |
| 438 | * - return a value |
| 439 | */ |
| 440 | case SIOCGMIIPHY: |
| 441 | case SIOCGMIIREG: |
| 442 | case SIOCSIFNAME: |
Paul Moore | b51f26b | 2018-03-06 17:27:44 -0500 | [diff] [blame] | 443 | dev_load(net, ifr->ifr_name); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 444 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
| 445 | return -EPERM; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 446 | rtnl_lock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 447 | ret = dev_ifsioc(net, ifr, cmd); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 448 | rtnl_unlock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 449 | if (colon) |
| 450 | *colon = ':'; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 451 | return ret; |
| 452 | |
| 453 | /* |
| 454 | * These ioctl calls: |
| 455 | * - require superuser power. |
| 456 | * - require strict serialization. |
| 457 | * - do not return a value |
| 458 | */ |
| 459 | case SIOCSIFMAP: |
| 460 | case SIOCSIFTXQLEN: |
| 461 | if (!capable(CAP_NET_ADMIN)) |
| 462 | return -EPERM; |
| 463 | /* fall through */ |
| 464 | /* |
| 465 | * These ioctl calls: |
| 466 | * - require local superuser power. |
| 467 | * - require strict serialization. |
| 468 | * - do not return a value |
| 469 | */ |
| 470 | case SIOCSIFFLAGS: |
| 471 | case SIOCSIFMETRIC: |
| 472 | case SIOCSIFMTU: |
| 473 | case SIOCSIFHWADDR: |
| 474 | case SIOCSIFSLAVE: |
| 475 | case SIOCADDMULTI: |
| 476 | case SIOCDELMULTI: |
| 477 | case SIOCSIFHWBROADCAST: |
| 478 | case SIOCSMIIREG: |
| 479 | case SIOCBONDENSLAVE: |
| 480 | case SIOCBONDRELEASE: |
| 481 | case SIOCBONDSETHWADDR: |
| 482 | case SIOCBONDCHANGEACTIVE: |
| 483 | case SIOCBRADDIF: |
| 484 | case SIOCBRDELIF: |
| 485 | case SIOCSHWTSTAMP: |
| 486 | if (!ns_capable(net->user_ns, CAP_NET_ADMIN)) |
| 487 | return -EPERM; |
| 488 | /* fall through */ |
| 489 | case SIOCBONDSLAVEINFOQUERY: |
| 490 | case SIOCBONDINFOQUERY: |
Paul Moore | b51f26b | 2018-03-06 17:27:44 -0500 | [diff] [blame] | 491 | dev_load(net, ifr->ifr_name); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 492 | rtnl_lock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 493 | ret = dev_ifsioc(net, ifr, cmd); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 494 | rtnl_unlock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 495 | if (need_copyout) |
| 496 | *need_copyout = false; |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 497 | return ret; |
| 498 | |
| 499 | case SIOCGIFMEM: |
| 500 | /* Get the per device memory space. We can add this but |
| 501 | * currently do not support it */ |
| 502 | case SIOCSIFMEM: |
| 503 | /* Set the per device memory buffer space. |
| 504 | * Not applicable in our case */ |
| 505 | case SIOCSIFLINK: |
| 506 | return -ENOTTY; |
| 507 | |
| 508 | /* |
| 509 | * Unknown or private ioctl. |
| 510 | */ |
| 511 | default: |
| 512 | if (cmd == SIOCWANDEV || |
Ben Hutchings | fd468c7 | 2013-11-14 01:19:29 +0000 | [diff] [blame] | 513 | cmd == SIOCGHWTSTAMP || |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 514 | (cmd >= SIOCDEVPRIVATE && |
| 515 | cmd <= SIOCDEVPRIVATE + 15)) { |
Paul Moore | b51f26b | 2018-03-06 17:27:44 -0500 | [diff] [blame] | 516 | dev_load(net, ifr->ifr_name); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 517 | rtnl_lock(); |
Al Viro | 44c02a2 | 2017-10-05 12:59:44 -0400 | [diff] [blame] | 518 | ret = dev_ifsioc(net, ifr, cmd); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 519 | rtnl_unlock(); |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 520 | return ret; |
| 521 | } |
Cong Wang | 96b45cb | 2013-02-15 22:20:46 +0000 | [diff] [blame] | 522 | return -ENOTTY; |
| 523 | } |
| 524 | } |