Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * net-sysfs.c - network device class and attributes |
| 3 | * |
| 4 | * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License |
| 8 | * as published by the Free Software Foundation; either version |
| 9 | * 2 of the License, or (at your option) any later version. |
| 10 | */ |
| 11 | |
Randy Dunlap | 4fc268d | 2006-01-11 12:17:47 -0800 | [diff] [blame] | 12 | #include <linux/capability.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | #include <linux/config.h> |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/netdevice.h> |
| 16 | #include <linux/if_arp.h> |
| 17 | #include <net/sock.h> |
| 18 | #include <linux/rtnetlink.h> |
| 19 | #include <linux/wireless.h> |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 20 | #include <net/iw_handler.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | |
| 22 | #define to_class_dev(obj) container_of(obj,struct class_device,kobj) |
| 23 | #define to_net_dev(class) container_of(class, struct net_device, class_dev) |
| 24 | |
| 25 | static const char fmt_hex[] = "%#x\n"; |
David S. Miller | d1102b5 | 2005-05-29 20:28:25 -0700 | [diff] [blame] | 26 | static const char fmt_long_hex[] = "%#lx\n"; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | static const char fmt_dec[] = "%d\n"; |
| 28 | static const char fmt_ulong[] = "%lu\n"; |
| 29 | |
| 30 | static inline int dev_isalive(const struct net_device *dev) |
| 31 | { |
| 32 | return dev->reg_state == NETREG_REGISTERED; |
| 33 | } |
| 34 | |
| 35 | /* use same locking rules as GIF* ioctl's */ |
| 36 | static ssize_t netdev_show(const struct class_device *cd, char *buf, |
| 37 | ssize_t (*format)(const struct net_device *, char *)) |
| 38 | { |
| 39 | struct net_device *net = to_net_dev(cd); |
| 40 | ssize_t ret = -EINVAL; |
| 41 | |
| 42 | read_lock(&dev_base_lock); |
| 43 | if (dev_isalive(net)) |
| 44 | ret = (*format)(net, buf); |
| 45 | read_unlock(&dev_base_lock); |
| 46 | |
| 47 | return ret; |
| 48 | } |
| 49 | |
| 50 | /* generate a show function for simple field */ |
| 51 | #define NETDEVICE_SHOW(field, format_string) \ |
| 52 | static ssize_t format_##field(const struct net_device *net, char *buf) \ |
| 53 | { \ |
| 54 | return sprintf(buf, format_string, net->field); \ |
| 55 | } \ |
| 56 | static ssize_t show_##field(struct class_device *cd, char *buf) \ |
| 57 | { \ |
| 58 | return netdev_show(cd, buf, format_##field); \ |
| 59 | } |
| 60 | |
| 61 | |
| 62 | /* use same locking and permission rules as SIF* ioctl's */ |
| 63 | static ssize_t netdev_store(struct class_device *dev, |
| 64 | const char *buf, size_t len, |
| 65 | int (*set)(struct net_device *, unsigned long)) |
| 66 | { |
| 67 | struct net_device *net = to_net_dev(dev); |
| 68 | char *endp; |
| 69 | unsigned long new; |
| 70 | int ret = -EINVAL; |
| 71 | |
| 72 | if (!capable(CAP_NET_ADMIN)) |
| 73 | return -EPERM; |
| 74 | |
| 75 | new = simple_strtoul(buf, &endp, 0); |
| 76 | if (endp == buf) |
| 77 | goto err; |
| 78 | |
| 79 | rtnl_lock(); |
| 80 | if (dev_isalive(net)) { |
| 81 | if ((ret = (*set)(net, new)) == 0) |
| 82 | ret = len; |
| 83 | } |
| 84 | rtnl_unlock(); |
| 85 | err: |
| 86 | return ret; |
| 87 | } |
| 88 | |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 89 | NETDEVICE_SHOW(addr_len, fmt_dec); |
| 90 | NETDEVICE_SHOW(iflink, fmt_dec); |
| 91 | NETDEVICE_SHOW(ifindex, fmt_dec); |
| 92 | NETDEVICE_SHOW(features, fmt_long_hex); |
| 93 | NETDEVICE_SHOW(type, fmt_dec); |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 94 | NETDEVICE_SHOW(link_mode, fmt_dec); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | /* use same locking rules as GIFHWADDR ioctl's */ |
| 97 | static ssize_t format_addr(char *buf, const unsigned char *addr, int len) |
| 98 | { |
| 99 | int i; |
| 100 | char *cp = buf; |
| 101 | |
| 102 | for (i = 0; i < len; i++) |
| 103 | cp += sprintf(cp, "%02x%c", addr[i], |
| 104 | i == (len - 1) ? '\n' : ':'); |
| 105 | return cp - buf; |
| 106 | } |
| 107 | |
| 108 | static ssize_t show_address(struct class_device *dev, char *buf) |
| 109 | { |
| 110 | struct net_device *net = to_net_dev(dev); |
| 111 | ssize_t ret = -EINVAL; |
| 112 | |
| 113 | read_lock(&dev_base_lock); |
| 114 | if (dev_isalive(net)) |
| 115 | ret = format_addr(buf, net->dev_addr, net->addr_len); |
| 116 | read_unlock(&dev_base_lock); |
| 117 | return ret; |
| 118 | } |
| 119 | |
| 120 | static ssize_t show_broadcast(struct class_device *dev, char *buf) |
| 121 | { |
| 122 | struct net_device *net = to_net_dev(dev); |
| 123 | if (dev_isalive(net)) |
| 124 | return format_addr(buf, net->broadcast, net->addr_len); |
| 125 | return -EINVAL; |
| 126 | } |
| 127 | |
| 128 | static ssize_t show_carrier(struct class_device *dev, char *buf) |
| 129 | { |
| 130 | struct net_device *netdev = to_net_dev(dev); |
| 131 | if (netif_running(netdev)) { |
| 132 | return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev)); |
| 133 | } |
| 134 | return -EINVAL; |
| 135 | } |
| 136 | |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 137 | static ssize_t show_dormant(struct class_device *dev, char *buf) |
| 138 | { |
| 139 | struct net_device *netdev = to_net_dev(dev); |
| 140 | |
| 141 | if (netif_running(netdev)) |
| 142 | return sprintf(buf, fmt_dec, !!netif_dormant(netdev)); |
| 143 | |
| 144 | return -EINVAL; |
| 145 | } |
| 146 | |
| 147 | static const char *operstates[] = { |
| 148 | "unknown", |
| 149 | "notpresent", /* currently unused */ |
| 150 | "down", |
| 151 | "lowerlayerdown", |
| 152 | "testing", /* currently unused */ |
| 153 | "dormant", |
| 154 | "up" |
| 155 | }; |
| 156 | |
| 157 | static ssize_t show_operstate(struct class_device *dev, char *buf) |
| 158 | { |
| 159 | const struct net_device *netdev = to_net_dev(dev); |
| 160 | unsigned char operstate; |
| 161 | |
| 162 | read_lock(&dev_base_lock); |
| 163 | operstate = netdev->operstate; |
| 164 | if (!netif_running(netdev)) |
| 165 | operstate = IF_OPER_DOWN; |
| 166 | read_unlock(&dev_base_lock); |
| 167 | |
Adrian Bunk | e3a5cd9 | 2006-04-05 22:19:47 -0700 | [diff] [blame] | 168 | if (operstate >= ARRAY_SIZE(operstates)) |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 169 | return -EINVAL; /* should not happen */ |
| 170 | |
| 171 | return sprintf(buf, "%s\n", operstates[operstate]); |
| 172 | } |
| 173 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 174 | /* read-write attributes */ |
| 175 | NETDEVICE_SHOW(mtu, fmt_dec); |
| 176 | |
| 177 | static int change_mtu(struct net_device *net, unsigned long new_mtu) |
| 178 | { |
| 179 | return dev_set_mtu(net, (int) new_mtu); |
| 180 | } |
| 181 | |
| 182 | static ssize_t store_mtu(struct class_device *dev, const char *buf, size_t len) |
| 183 | { |
| 184 | return netdev_store(dev, buf, len, change_mtu); |
| 185 | } |
| 186 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | NETDEVICE_SHOW(flags, fmt_hex); |
| 188 | |
| 189 | static int change_flags(struct net_device *net, unsigned long new_flags) |
| 190 | { |
| 191 | return dev_change_flags(net, (unsigned) new_flags); |
| 192 | } |
| 193 | |
| 194 | static ssize_t store_flags(struct class_device *dev, const char *buf, size_t len) |
| 195 | { |
| 196 | return netdev_store(dev, buf, len, change_flags); |
| 197 | } |
| 198 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | NETDEVICE_SHOW(tx_queue_len, fmt_ulong); |
| 200 | |
| 201 | static int change_tx_queue_len(struct net_device *net, unsigned long new_len) |
| 202 | { |
| 203 | net->tx_queue_len = new_len; |
| 204 | return 0; |
| 205 | } |
| 206 | |
| 207 | static ssize_t store_tx_queue_len(struct class_device *dev, const char *buf, size_t len) |
| 208 | { |
| 209 | return netdev_store(dev, buf, len, change_tx_queue_len); |
| 210 | } |
| 211 | |
Stephen Hemminger | 699a411 | 2005-06-08 14:55:42 -0700 | [diff] [blame] | 212 | NETDEVICE_SHOW(weight, fmt_dec); |
| 213 | |
| 214 | static int change_weight(struct net_device *net, unsigned long new_weight) |
| 215 | { |
| 216 | net->weight = new_weight; |
| 217 | return 0; |
| 218 | } |
| 219 | |
| 220 | static ssize_t store_weight(struct class_device *dev, const char *buf, size_t len) |
| 221 | { |
| 222 | return netdev_store(dev, buf, len, change_weight); |
| 223 | } |
| 224 | |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 225 | static struct class_device_attribute net_class_attributes[] = { |
| 226 | __ATTR(addr_len, S_IRUGO, show_addr_len, NULL), |
| 227 | __ATTR(iflink, S_IRUGO, show_iflink, NULL), |
| 228 | __ATTR(ifindex, S_IRUGO, show_ifindex, NULL), |
| 229 | __ATTR(features, S_IRUGO, show_features, NULL), |
| 230 | __ATTR(type, S_IRUGO, show_type, NULL), |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 231 | __ATTR(link_mode, S_IRUGO, show_link_mode, NULL), |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 232 | __ATTR(address, S_IRUGO, show_address, NULL), |
| 233 | __ATTR(broadcast, S_IRUGO, show_broadcast, NULL), |
| 234 | __ATTR(carrier, S_IRUGO, show_carrier, NULL), |
Stefan Rompf | b00055a | 2006-03-20 17:09:11 -0800 | [diff] [blame] | 235 | __ATTR(dormant, S_IRUGO, show_dormant, NULL), |
| 236 | __ATTR(operstate, S_IRUGO, show_operstate, NULL), |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 237 | __ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu), |
| 238 | __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags), |
| 239 | __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, |
| 240 | store_tx_queue_len), |
| 241 | __ATTR(weight, S_IRUGO | S_IWUSR, show_weight, store_weight), |
| 242 | {} |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | }; |
| 244 | |
| 245 | /* Show a given an attribute in the statistics group */ |
| 246 | static ssize_t netstat_show(const struct class_device *cd, char *buf, |
| 247 | unsigned long offset) |
| 248 | { |
| 249 | struct net_device *dev = to_net_dev(cd); |
| 250 | struct net_device_stats *stats; |
| 251 | ssize_t ret = -EINVAL; |
| 252 | |
| 253 | if (offset > sizeof(struct net_device_stats) || |
| 254 | offset % sizeof(unsigned long) != 0) |
| 255 | WARN_ON(1); |
| 256 | |
| 257 | read_lock(&dev_base_lock); |
| 258 | if (dev_isalive(dev) && dev->get_stats && |
| 259 | (stats = (*dev->get_stats)(dev))) |
| 260 | ret = sprintf(buf, fmt_ulong, |
| 261 | *(unsigned long *)(((u8 *) stats) + offset)); |
| 262 | |
| 263 | read_unlock(&dev_base_lock); |
| 264 | return ret; |
| 265 | } |
| 266 | |
| 267 | /* generate a read-only statistics attribute */ |
| 268 | #define NETSTAT_ENTRY(name) \ |
| 269 | static ssize_t show_##name(struct class_device *cd, char *buf) \ |
| 270 | { \ |
| 271 | return netstat_show(cd, buf, \ |
| 272 | offsetof(struct net_device_stats, name)); \ |
| 273 | } \ |
| 274 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) |
| 275 | |
| 276 | NETSTAT_ENTRY(rx_packets); |
| 277 | NETSTAT_ENTRY(tx_packets); |
| 278 | NETSTAT_ENTRY(rx_bytes); |
| 279 | NETSTAT_ENTRY(tx_bytes); |
| 280 | NETSTAT_ENTRY(rx_errors); |
| 281 | NETSTAT_ENTRY(tx_errors); |
| 282 | NETSTAT_ENTRY(rx_dropped); |
| 283 | NETSTAT_ENTRY(tx_dropped); |
| 284 | NETSTAT_ENTRY(multicast); |
| 285 | NETSTAT_ENTRY(collisions); |
| 286 | NETSTAT_ENTRY(rx_length_errors); |
| 287 | NETSTAT_ENTRY(rx_over_errors); |
| 288 | NETSTAT_ENTRY(rx_crc_errors); |
| 289 | NETSTAT_ENTRY(rx_frame_errors); |
| 290 | NETSTAT_ENTRY(rx_fifo_errors); |
| 291 | NETSTAT_ENTRY(rx_missed_errors); |
| 292 | NETSTAT_ENTRY(tx_aborted_errors); |
| 293 | NETSTAT_ENTRY(tx_carrier_errors); |
| 294 | NETSTAT_ENTRY(tx_fifo_errors); |
| 295 | NETSTAT_ENTRY(tx_heartbeat_errors); |
| 296 | NETSTAT_ENTRY(tx_window_errors); |
| 297 | NETSTAT_ENTRY(rx_compressed); |
| 298 | NETSTAT_ENTRY(tx_compressed); |
| 299 | |
| 300 | static struct attribute *netstat_attrs[] = { |
| 301 | &class_device_attr_rx_packets.attr, |
| 302 | &class_device_attr_tx_packets.attr, |
| 303 | &class_device_attr_rx_bytes.attr, |
| 304 | &class_device_attr_tx_bytes.attr, |
| 305 | &class_device_attr_rx_errors.attr, |
| 306 | &class_device_attr_tx_errors.attr, |
| 307 | &class_device_attr_rx_dropped.attr, |
| 308 | &class_device_attr_tx_dropped.attr, |
| 309 | &class_device_attr_multicast.attr, |
| 310 | &class_device_attr_collisions.attr, |
| 311 | &class_device_attr_rx_length_errors.attr, |
| 312 | &class_device_attr_rx_over_errors.attr, |
| 313 | &class_device_attr_rx_crc_errors.attr, |
| 314 | &class_device_attr_rx_frame_errors.attr, |
| 315 | &class_device_attr_rx_fifo_errors.attr, |
| 316 | &class_device_attr_rx_missed_errors.attr, |
| 317 | &class_device_attr_tx_aborted_errors.attr, |
| 318 | &class_device_attr_tx_carrier_errors.attr, |
| 319 | &class_device_attr_tx_fifo_errors.attr, |
| 320 | &class_device_attr_tx_heartbeat_errors.attr, |
| 321 | &class_device_attr_tx_window_errors.attr, |
| 322 | &class_device_attr_rx_compressed.attr, |
| 323 | &class_device_attr_tx_compressed.attr, |
| 324 | NULL |
| 325 | }; |
| 326 | |
| 327 | |
| 328 | static struct attribute_group netstat_group = { |
| 329 | .name = "statistics", |
| 330 | .attrs = netstat_attrs, |
| 331 | }; |
| 332 | |
| 333 | #ifdef WIRELESS_EXT |
| 334 | /* helper function that does all the locking etc for wireless stats */ |
| 335 | static ssize_t wireless_show(struct class_device *cd, char *buf, |
| 336 | ssize_t (*format)(const struct iw_statistics *, |
| 337 | char *)) |
| 338 | { |
| 339 | struct net_device *dev = to_net_dev(cd); |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 340 | const struct iw_statistics *iw = NULL; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 341 | ssize_t ret = -EINVAL; |
| 342 | |
| 343 | read_lock(&dev_base_lock); |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 344 | if (dev_isalive(dev)) { |
| 345 | if(dev->wireless_handlers && |
| 346 | dev->wireless_handlers->get_wireless_stats) |
| 347 | iw = dev->wireless_handlers->get_wireless_stats(dev); |
| 348 | else if (dev->get_wireless_stats) |
| 349 | iw = dev->get_wireless_stats(dev); |
| 350 | if (iw != NULL) |
| 351 | ret = (*format)(iw, buf); |
| 352 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 353 | read_unlock(&dev_base_lock); |
| 354 | |
| 355 | return ret; |
| 356 | } |
| 357 | |
| 358 | /* show function template for wireless fields */ |
| 359 | #define WIRELESS_SHOW(name, field, format_string) \ |
| 360 | static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \ |
| 361 | { \ |
| 362 | return sprintf(buf, format_string, iw->field); \ |
| 363 | } \ |
| 364 | static ssize_t show_iw_##name(struct class_device *cd, char *buf) \ |
| 365 | { \ |
| 366 | return wireless_show(cd, buf, format_iw_##name); \ |
| 367 | } \ |
| 368 | static CLASS_DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL) |
| 369 | |
| 370 | WIRELESS_SHOW(status, status, fmt_hex); |
| 371 | WIRELESS_SHOW(link, qual.qual, fmt_dec); |
| 372 | WIRELESS_SHOW(level, qual.level, fmt_dec); |
| 373 | WIRELESS_SHOW(noise, qual.noise, fmt_dec); |
| 374 | WIRELESS_SHOW(nwid, discard.nwid, fmt_dec); |
| 375 | WIRELESS_SHOW(crypt, discard.code, fmt_dec); |
| 376 | WIRELESS_SHOW(fragment, discard.fragment, fmt_dec); |
| 377 | WIRELESS_SHOW(misc, discard.misc, fmt_dec); |
| 378 | WIRELESS_SHOW(retries, discard.retries, fmt_dec); |
| 379 | WIRELESS_SHOW(beacon, miss.beacon, fmt_dec); |
| 380 | |
| 381 | static struct attribute *wireless_attrs[] = { |
| 382 | &class_device_attr_status.attr, |
| 383 | &class_device_attr_link.attr, |
| 384 | &class_device_attr_level.attr, |
| 385 | &class_device_attr_noise.attr, |
| 386 | &class_device_attr_nwid.attr, |
| 387 | &class_device_attr_crypt.attr, |
| 388 | &class_device_attr_fragment.attr, |
| 389 | &class_device_attr_retries.attr, |
| 390 | &class_device_attr_misc.attr, |
| 391 | &class_device_attr_beacon.attr, |
| 392 | NULL |
| 393 | }; |
| 394 | |
| 395 | static struct attribute_group wireless_group = { |
| 396 | .name = "wireless", |
| 397 | .attrs = wireless_attrs, |
| 398 | }; |
| 399 | #endif |
| 400 | |
| 401 | #ifdef CONFIG_HOTPLUG |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 402 | static int netdev_uevent(struct class_device *cd, char **envp, |
| 403 | int num_envp, char *buf, int size) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 404 | { |
| 405 | struct net_device *dev = to_net_dev(cd); |
| 406 | int i = 0; |
| 407 | int n; |
| 408 | |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 409 | /* pass interface to uevent. */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 410 | envp[i++] = buf; |
| 411 | n = snprintf(buf, size, "INTERFACE=%s", dev->name) + 1; |
| 412 | buf += n; |
| 413 | size -= n; |
| 414 | |
| 415 | if ((size <= 0) || (i >= num_envp)) |
| 416 | return -ENOMEM; |
| 417 | |
| 418 | envp[i] = NULL; |
| 419 | return 0; |
| 420 | } |
| 421 | #endif |
| 422 | |
| 423 | /* |
| 424 | * netdev_release -- destroy and free a dead device. |
| 425 | * Called when last reference to class_device kobject is gone. |
| 426 | */ |
| 427 | static void netdev_release(struct class_device *cd) |
| 428 | { |
| 429 | struct net_device *dev |
| 430 | = container_of(cd, struct net_device, class_dev); |
| 431 | |
| 432 | BUG_ON(dev->reg_state != NETREG_RELEASED); |
| 433 | |
| 434 | kfree((char *)dev - dev->padded); |
| 435 | } |
| 436 | |
| 437 | static struct class net_class = { |
| 438 | .name = "net", |
| 439 | .release = netdev_release, |
Kay Sievers | fd586ba | 2005-12-19 01:42:56 +0100 | [diff] [blame] | 440 | .class_dev_attrs = net_class_attributes, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 441 | #ifdef CONFIG_HOTPLUG |
Kay Sievers | 312c004 | 2005-11-16 09:00:00 +0100 | [diff] [blame] | 442 | .uevent = netdev_uevent, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 443 | #endif |
| 444 | }; |
| 445 | |
| 446 | void netdev_unregister_sysfs(struct net_device * net) |
| 447 | { |
| 448 | struct class_device * class_dev = &(net->class_dev); |
| 449 | |
| 450 | if (net->get_stats) |
| 451 | sysfs_remove_group(&class_dev->kobj, &netstat_group); |
| 452 | |
| 453 | #ifdef WIRELESS_EXT |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 454 | if (net->get_wireless_stats || (net->wireless_handlers && |
| 455 | net->wireless_handlers->get_wireless_stats)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 456 | sysfs_remove_group(&class_dev->kobj, &wireless_group); |
| 457 | #endif |
| 458 | class_device_del(class_dev); |
| 459 | |
| 460 | } |
| 461 | |
| 462 | /* Create sysfs entries for network device. */ |
| 463 | int netdev_register_sysfs(struct net_device *net) |
| 464 | { |
| 465 | struct class_device *class_dev = &(net->class_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 466 | int ret; |
| 467 | |
| 468 | class_dev->class = &net_class; |
| 469 | class_dev->class_data = net; |
| 470 | |
| 471 | strlcpy(class_dev->class_id, net->name, BUS_ID_SIZE); |
| 472 | if ((ret = class_device_register(class_dev))) |
| 473 | goto out; |
| 474 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 475 | if (net->get_stats && |
| 476 | (ret = sysfs_create_group(&class_dev->kobj, &netstat_group))) |
| 477 | goto out_unreg; |
| 478 | |
| 479 | #ifdef WIRELESS_EXT |
Andrey Borzenkov | 6dd214b | 2006-01-09 20:51:28 -0800 | [diff] [blame] | 480 | if (net->get_wireless_stats || (net->wireless_handlers && |
| 481 | net->wireless_handlers->get_wireless_stats)) { |
| 482 | ret = sysfs_create_group(&class_dev->kobj, &wireless_group); |
| 483 | if (ret) |
| 484 | goto out_cleanup; |
| 485 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | return 0; |
| 487 | out_cleanup: |
| 488 | if (net->get_stats) |
| 489 | sysfs_remove_group(&class_dev->kobj, &netstat_group); |
| 490 | #else |
| 491 | return 0; |
| 492 | #endif |
| 493 | |
| 494 | out_unreg: |
| 495 | printk(KERN_WARNING "%s: sysfs attribute registration failed %d\n", |
| 496 | net->name, ret); |
| 497 | class_device_unregister(class_dev); |
| 498 | out: |
| 499 | return ret; |
| 500 | } |
| 501 | |
| 502 | int netdev_sysfs_init(void) |
| 503 | { |
| 504 | return class_register(&net_class); |
| 505 | } |