Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * net-sysfs.c - network device class and attributes | |
3 | * | |
4 | * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org> | |
4ec93edb | 5 | * |
1da177e4 LT |
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 | ||
4fc268d2 | 12 | #include <linux/capability.h> |
1da177e4 LT |
13 | #include <linux/kernel.h> |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/if_arp.h> | |
16 | #include <net/sock.h> | |
17 | #include <linux/rtnetlink.h> | |
18 | #include <linux/wireless.h> | |
6dd214b5 | 19 | #include <net/iw_handler.h> |
1da177e4 | 20 | |
342709ef PE |
21 | #include "net-sysfs.h" |
22 | ||
8b41d188 | 23 | #ifdef CONFIG_SYSFS |
1da177e4 | 24 | static const char fmt_hex[] = "%#x\n"; |
d1102b59 | 25 | static const char fmt_long_hex[] = "%#lx\n"; |
1da177e4 LT |
26 | static const char fmt_dec[] = "%d\n"; |
27 | static const char fmt_ulong[] = "%lu\n"; | |
28 | ||
4ec93edb | 29 | static inline int dev_isalive(const struct net_device *dev) |
1da177e4 | 30 | { |
fe9925b5 | 31 | return dev->reg_state <= NETREG_REGISTERED; |
1da177e4 LT |
32 | } |
33 | ||
34 | /* use same locking rules as GIF* ioctl's */ | |
43cb76d9 GKH |
35 | static ssize_t netdev_show(const struct device *dev, |
36 | struct device_attribute *attr, char *buf, | |
1da177e4 LT |
37 | ssize_t (*format)(const struct net_device *, char *)) |
38 | { | |
43cb76d9 | 39 | struct net_device *net = to_net_dev(dev); |
1da177e4 LT |
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 | } \ | |
43cb76d9 GKH |
56 | static ssize_t show_##field(struct device *dev, \ |
57 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 58 | { \ |
43cb76d9 | 59 | return netdev_show(dev, attr, buf, format_##field); \ |
1da177e4 LT |
60 | } |
61 | ||
62 | ||
63 | /* use same locking and permission rules as SIF* ioctl's */ | |
43cb76d9 | 64 | static ssize_t netdev_store(struct device *dev, struct device_attribute *attr, |
1da177e4 LT |
65 | const char *buf, size_t len, |
66 | int (*set)(struct net_device *, unsigned long)) | |
67 | { | |
68 | struct net_device *net = to_net_dev(dev); | |
69 | char *endp; | |
70 | unsigned long new; | |
71 | int ret = -EINVAL; | |
72 | ||
73 | if (!capable(CAP_NET_ADMIN)) | |
74 | return -EPERM; | |
75 | ||
76 | new = simple_strtoul(buf, &endp, 0); | |
77 | if (endp == buf) | |
78 | goto err; | |
79 | ||
5a5990d3 SH |
80 | if (!rtnl_trylock()) |
81 | return -ERESTARTSYS; | |
82 | ||
1da177e4 LT |
83 | if (dev_isalive(net)) { |
84 | if ((ret = (*set)(net, new)) == 0) | |
85 | ret = len; | |
86 | } | |
87 | rtnl_unlock(); | |
88 | err: | |
89 | return ret; | |
90 | } | |
91 | ||
9d29672c | 92 | NETDEVICE_SHOW(dev_id, fmt_hex); |
fd586bac KS |
93 | NETDEVICE_SHOW(addr_len, fmt_dec); |
94 | NETDEVICE_SHOW(iflink, fmt_dec); | |
95 | NETDEVICE_SHOW(ifindex, fmt_dec); | |
96 | NETDEVICE_SHOW(features, fmt_long_hex); | |
97 | NETDEVICE_SHOW(type, fmt_dec); | |
b00055aa | 98 | NETDEVICE_SHOW(link_mode, fmt_dec); |
1da177e4 LT |
99 | |
100 | /* use same locking rules as GIFHWADDR ioctl's */ | |
43cb76d9 GKH |
101 | static ssize_t show_address(struct device *dev, struct device_attribute *attr, |
102 | char *buf) | |
1da177e4 LT |
103 | { |
104 | struct net_device *net = to_net_dev(dev); | |
105 | ssize_t ret = -EINVAL; | |
106 | ||
107 | read_lock(&dev_base_lock); | |
108 | if (dev_isalive(net)) | |
7ffc49a6 | 109 | ret = sysfs_format_mac(buf, net->dev_addr, net->addr_len); |
1da177e4 LT |
110 | read_unlock(&dev_base_lock); |
111 | return ret; | |
112 | } | |
113 | ||
43cb76d9 GKH |
114 | static ssize_t show_broadcast(struct device *dev, |
115 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
116 | { |
117 | struct net_device *net = to_net_dev(dev); | |
118 | if (dev_isalive(net)) | |
7ffc49a6 | 119 | return sysfs_format_mac(buf, net->broadcast, net->addr_len); |
1da177e4 LT |
120 | return -EINVAL; |
121 | } | |
122 | ||
43cb76d9 GKH |
123 | static ssize_t show_carrier(struct device *dev, |
124 | struct device_attribute *attr, char *buf) | |
1da177e4 LT |
125 | { |
126 | struct net_device *netdev = to_net_dev(dev); | |
127 | if (netif_running(netdev)) { | |
128 | return sprintf(buf, fmt_dec, !!netif_carrier_ok(netdev)); | |
129 | } | |
130 | return -EINVAL; | |
131 | } | |
132 | ||
43cb76d9 GKH |
133 | static ssize_t show_dormant(struct device *dev, |
134 | struct device_attribute *attr, char *buf) | |
b00055aa SR |
135 | { |
136 | struct net_device *netdev = to_net_dev(dev); | |
137 | ||
138 | if (netif_running(netdev)) | |
139 | return sprintf(buf, fmt_dec, !!netif_dormant(netdev)); | |
140 | ||
141 | return -EINVAL; | |
142 | } | |
143 | ||
144 | static const char *operstates[] = { | |
145 | "unknown", | |
146 | "notpresent", /* currently unused */ | |
147 | "down", | |
148 | "lowerlayerdown", | |
149 | "testing", /* currently unused */ | |
150 | "dormant", | |
151 | "up" | |
152 | }; | |
153 | ||
43cb76d9 GKH |
154 | static ssize_t show_operstate(struct device *dev, |
155 | struct device_attribute *attr, char *buf) | |
b00055aa SR |
156 | { |
157 | const struct net_device *netdev = to_net_dev(dev); | |
158 | unsigned char operstate; | |
159 | ||
160 | read_lock(&dev_base_lock); | |
161 | operstate = netdev->operstate; | |
162 | if (!netif_running(netdev)) | |
163 | operstate = IF_OPER_DOWN; | |
164 | read_unlock(&dev_base_lock); | |
165 | ||
e3a5cd9e | 166 | if (operstate >= ARRAY_SIZE(operstates)) |
b00055aa SR |
167 | return -EINVAL; /* should not happen */ |
168 | ||
169 | return sprintf(buf, "%s\n", operstates[operstate]); | |
170 | } | |
171 | ||
1da177e4 LT |
172 | /* read-write attributes */ |
173 | NETDEVICE_SHOW(mtu, fmt_dec); | |
174 | ||
175 | static int change_mtu(struct net_device *net, unsigned long new_mtu) | |
176 | { | |
177 | return dev_set_mtu(net, (int) new_mtu); | |
178 | } | |
179 | ||
43cb76d9 GKH |
180 | static ssize_t store_mtu(struct device *dev, struct device_attribute *attr, |
181 | const char *buf, size_t len) | |
1da177e4 | 182 | { |
43cb76d9 | 183 | return netdev_store(dev, attr, buf, len, change_mtu); |
1da177e4 LT |
184 | } |
185 | ||
1da177e4 LT |
186 | NETDEVICE_SHOW(flags, fmt_hex); |
187 | ||
188 | static int change_flags(struct net_device *net, unsigned long new_flags) | |
189 | { | |
190 | return dev_change_flags(net, (unsigned) new_flags); | |
191 | } | |
192 | ||
43cb76d9 GKH |
193 | static ssize_t store_flags(struct device *dev, struct device_attribute *attr, |
194 | const char *buf, size_t len) | |
1da177e4 | 195 | { |
43cb76d9 | 196 | return netdev_store(dev, attr, buf, len, change_flags); |
1da177e4 LT |
197 | } |
198 | ||
1da177e4 LT |
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 | ||
43cb76d9 GKH |
207 | static ssize_t store_tx_queue_len(struct device *dev, |
208 | struct device_attribute *attr, | |
209 | const char *buf, size_t len) | |
1da177e4 | 210 | { |
43cb76d9 | 211 | return netdev_store(dev, attr, buf, len, change_tx_queue_len); |
1da177e4 LT |
212 | } |
213 | ||
0b815a1a SH |
214 | static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr, |
215 | const char *buf, size_t len) | |
216 | { | |
217 | struct net_device *netdev = to_net_dev(dev); | |
218 | size_t count = len; | |
219 | ssize_t ret; | |
220 | ||
221 | if (!capable(CAP_NET_ADMIN)) | |
222 | return -EPERM; | |
223 | ||
224 | /* ignore trailing newline */ | |
225 | if (len > 0 && buf[len - 1] == '\n') | |
226 | --count; | |
227 | ||
228 | rtnl_lock(); | |
229 | ret = dev_set_alias(netdev, buf, count); | |
230 | rtnl_unlock(); | |
231 | ||
232 | return ret < 0 ? ret : len; | |
233 | } | |
234 | ||
235 | static ssize_t show_ifalias(struct device *dev, | |
236 | struct device_attribute *attr, char *buf) | |
237 | { | |
238 | const struct net_device *netdev = to_net_dev(dev); | |
239 | ssize_t ret = 0; | |
240 | ||
241 | rtnl_lock(); | |
242 | if (netdev->ifalias) | |
243 | ret = sprintf(buf, "%s\n", netdev->ifalias); | |
244 | rtnl_unlock(); | |
245 | return ret; | |
246 | } | |
247 | ||
43cb76d9 | 248 | static struct device_attribute net_class_attributes[] = { |
fd586bac | 249 | __ATTR(addr_len, S_IRUGO, show_addr_len, NULL), |
9d29672c | 250 | __ATTR(dev_id, S_IRUGO, show_dev_id, NULL), |
0b815a1a | 251 | __ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias), |
fd586bac KS |
252 | __ATTR(iflink, S_IRUGO, show_iflink, NULL), |
253 | __ATTR(ifindex, S_IRUGO, show_ifindex, NULL), | |
254 | __ATTR(features, S_IRUGO, show_features, NULL), | |
255 | __ATTR(type, S_IRUGO, show_type, NULL), | |
b00055aa | 256 | __ATTR(link_mode, S_IRUGO, show_link_mode, NULL), |
fd586bac KS |
257 | __ATTR(address, S_IRUGO, show_address, NULL), |
258 | __ATTR(broadcast, S_IRUGO, show_broadcast, NULL), | |
259 | __ATTR(carrier, S_IRUGO, show_carrier, NULL), | |
b00055aa SR |
260 | __ATTR(dormant, S_IRUGO, show_dormant, NULL), |
261 | __ATTR(operstate, S_IRUGO, show_operstate, NULL), | |
fd586bac KS |
262 | __ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu), |
263 | __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags), | |
264 | __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len, | |
265 | store_tx_queue_len), | |
fd586bac | 266 | {} |
1da177e4 LT |
267 | }; |
268 | ||
269 | /* Show a given an attribute in the statistics group */ | |
43cb76d9 GKH |
270 | static ssize_t netstat_show(const struct device *d, |
271 | struct device_attribute *attr, char *buf, | |
1da177e4 LT |
272 | unsigned long offset) |
273 | { | |
43cb76d9 | 274 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
275 | ssize_t ret = -EINVAL; |
276 | ||
df1b86c5 PE |
277 | WARN_ON(offset > sizeof(struct net_device_stats) || |
278 | offset % sizeof(unsigned long) != 0); | |
1da177e4 LT |
279 | |
280 | read_lock(&dev_base_lock); | |
96e74088 | 281 | if (dev_isalive(dev)) { |
eeda3fd6 | 282 | const struct net_device_stats *stats = dev_get_stats(dev); |
1da177e4 LT |
283 | ret = sprintf(buf, fmt_ulong, |
284 | *(unsigned long *)(((u8 *) stats) + offset)); | |
96e74088 | 285 | } |
1da177e4 LT |
286 | read_unlock(&dev_base_lock); |
287 | return ret; | |
288 | } | |
289 | ||
290 | /* generate a read-only statistics attribute */ | |
291 | #define NETSTAT_ENTRY(name) \ | |
43cb76d9 GKH |
292 | static ssize_t show_##name(struct device *d, \ |
293 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 294 | { \ |
43cb76d9 | 295 | return netstat_show(d, attr, buf, \ |
1da177e4 LT |
296 | offsetof(struct net_device_stats, name)); \ |
297 | } \ | |
43cb76d9 | 298 | static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL) |
1da177e4 LT |
299 | |
300 | NETSTAT_ENTRY(rx_packets); | |
301 | NETSTAT_ENTRY(tx_packets); | |
302 | NETSTAT_ENTRY(rx_bytes); | |
303 | NETSTAT_ENTRY(tx_bytes); | |
304 | NETSTAT_ENTRY(rx_errors); | |
305 | NETSTAT_ENTRY(tx_errors); | |
306 | NETSTAT_ENTRY(rx_dropped); | |
307 | NETSTAT_ENTRY(tx_dropped); | |
308 | NETSTAT_ENTRY(multicast); | |
309 | NETSTAT_ENTRY(collisions); | |
310 | NETSTAT_ENTRY(rx_length_errors); | |
311 | NETSTAT_ENTRY(rx_over_errors); | |
312 | NETSTAT_ENTRY(rx_crc_errors); | |
313 | NETSTAT_ENTRY(rx_frame_errors); | |
314 | NETSTAT_ENTRY(rx_fifo_errors); | |
315 | NETSTAT_ENTRY(rx_missed_errors); | |
316 | NETSTAT_ENTRY(tx_aborted_errors); | |
317 | NETSTAT_ENTRY(tx_carrier_errors); | |
318 | NETSTAT_ENTRY(tx_fifo_errors); | |
319 | NETSTAT_ENTRY(tx_heartbeat_errors); | |
320 | NETSTAT_ENTRY(tx_window_errors); | |
321 | NETSTAT_ENTRY(rx_compressed); | |
322 | NETSTAT_ENTRY(tx_compressed); | |
323 | ||
324 | static struct attribute *netstat_attrs[] = { | |
43cb76d9 GKH |
325 | &dev_attr_rx_packets.attr, |
326 | &dev_attr_tx_packets.attr, | |
327 | &dev_attr_rx_bytes.attr, | |
328 | &dev_attr_tx_bytes.attr, | |
329 | &dev_attr_rx_errors.attr, | |
330 | &dev_attr_tx_errors.attr, | |
331 | &dev_attr_rx_dropped.attr, | |
332 | &dev_attr_tx_dropped.attr, | |
333 | &dev_attr_multicast.attr, | |
334 | &dev_attr_collisions.attr, | |
335 | &dev_attr_rx_length_errors.attr, | |
336 | &dev_attr_rx_over_errors.attr, | |
337 | &dev_attr_rx_crc_errors.attr, | |
338 | &dev_attr_rx_frame_errors.attr, | |
339 | &dev_attr_rx_fifo_errors.attr, | |
340 | &dev_attr_rx_missed_errors.attr, | |
341 | &dev_attr_tx_aborted_errors.attr, | |
342 | &dev_attr_tx_carrier_errors.attr, | |
343 | &dev_attr_tx_fifo_errors.attr, | |
344 | &dev_attr_tx_heartbeat_errors.attr, | |
345 | &dev_attr_tx_window_errors.attr, | |
346 | &dev_attr_rx_compressed.attr, | |
347 | &dev_attr_tx_compressed.attr, | |
1da177e4 LT |
348 | NULL |
349 | }; | |
350 | ||
351 | ||
352 | static struct attribute_group netstat_group = { | |
353 | .name = "statistics", | |
354 | .attrs = netstat_attrs, | |
355 | }; | |
356 | ||
22bb1be4 | 357 | #ifdef CONFIG_WIRELESS_EXT_SYSFS |
1da177e4 | 358 | /* helper function that does all the locking etc for wireless stats */ |
43cb76d9 | 359 | static ssize_t wireless_show(struct device *d, char *buf, |
1da177e4 LT |
360 | ssize_t (*format)(const struct iw_statistics *, |
361 | char *)) | |
362 | { | |
43cb76d9 | 363 | struct net_device *dev = to_net_dev(d); |
6dd214b5 | 364 | const struct iw_statistics *iw = NULL; |
1da177e4 | 365 | ssize_t ret = -EINVAL; |
4ec93edb | 366 | |
1da177e4 | 367 | read_lock(&dev_base_lock); |
6dd214b5 | 368 | if (dev_isalive(dev)) { |
e71a4783 SH |
369 | if (dev->wireless_handlers && |
370 | dev->wireless_handlers->get_wireless_stats) | |
6dd214b5 | 371 | iw = dev->wireless_handlers->get_wireless_stats(dev); |
6dd214b5 AB |
372 | if (iw != NULL) |
373 | ret = (*format)(iw, buf); | |
374 | } | |
1da177e4 LT |
375 | read_unlock(&dev_base_lock); |
376 | ||
377 | return ret; | |
378 | } | |
379 | ||
380 | /* show function template for wireless fields */ | |
381 | #define WIRELESS_SHOW(name, field, format_string) \ | |
382 | static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \ | |
383 | { \ | |
384 | return sprintf(buf, format_string, iw->field); \ | |
385 | } \ | |
43cb76d9 GKH |
386 | static ssize_t show_iw_##name(struct device *d, \ |
387 | struct device_attribute *attr, char *buf) \ | |
1da177e4 | 388 | { \ |
43cb76d9 | 389 | return wireless_show(d, buf, format_iw_##name); \ |
1da177e4 | 390 | } \ |
43cb76d9 | 391 | static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL) |
1da177e4 LT |
392 | |
393 | WIRELESS_SHOW(status, status, fmt_hex); | |
394 | WIRELESS_SHOW(link, qual.qual, fmt_dec); | |
395 | WIRELESS_SHOW(level, qual.level, fmt_dec); | |
396 | WIRELESS_SHOW(noise, qual.noise, fmt_dec); | |
397 | WIRELESS_SHOW(nwid, discard.nwid, fmt_dec); | |
398 | WIRELESS_SHOW(crypt, discard.code, fmt_dec); | |
399 | WIRELESS_SHOW(fragment, discard.fragment, fmt_dec); | |
400 | WIRELESS_SHOW(misc, discard.misc, fmt_dec); | |
401 | WIRELESS_SHOW(retries, discard.retries, fmt_dec); | |
402 | WIRELESS_SHOW(beacon, miss.beacon, fmt_dec); | |
403 | ||
404 | static struct attribute *wireless_attrs[] = { | |
43cb76d9 GKH |
405 | &dev_attr_status.attr, |
406 | &dev_attr_link.attr, | |
407 | &dev_attr_level.attr, | |
408 | &dev_attr_noise.attr, | |
409 | &dev_attr_nwid.attr, | |
410 | &dev_attr_crypt.attr, | |
411 | &dev_attr_fragment.attr, | |
412 | &dev_attr_retries.attr, | |
413 | &dev_attr_misc.attr, | |
414 | &dev_attr_beacon.attr, | |
1da177e4 LT |
415 | NULL |
416 | }; | |
417 | ||
418 | static struct attribute_group wireless_group = { | |
419 | .name = "wireless", | |
420 | .attrs = wireless_attrs, | |
421 | }; | |
422 | #endif | |
423 | ||
8b41d188 EB |
424 | #endif /* CONFIG_SYSFS */ |
425 | ||
1da177e4 | 426 | #ifdef CONFIG_HOTPLUG |
7eff2e7a | 427 | static int netdev_uevent(struct device *d, struct kobj_uevent_env *env) |
1da177e4 | 428 | { |
43cb76d9 | 429 | struct net_device *dev = to_net_dev(d); |
7eff2e7a | 430 | int retval; |
1da177e4 | 431 | |
09bb5217 DL |
432 | if (!net_eq(dev_net(dev), &init_net)) |
433 | return 0; | |
434 | ||
312c004d | 435 | /* pass interface to uevent. */ |
7eff2e7a | 436 | retval = add_uevent_var(env, "INTERFACE=%s", dev->name); |
bf62456e ER |
437 | if (retval) |
438 | goto exit; | |
ca2f37db JT |
439 | |
440 | /* pass ifindex to uevent. | |
441 | * ifindex is useful as it won't change (interface name may change) | |
442 | * and is what RtNetlink uses natively. */ | |
7eff2e7a | 443 | retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex); |
1da177e4 | 444 | |
bf62456e | 445 | exit: |
bf62456e | 446 | return retval; |
1da177e4 LT |
447 | } |
448 | #endif | |
449 | ||
450 | /* | |
4ec93edb | 451 | * netdev_release -- destroy and free a dead device. |
43cb76d9 | 452 | * Called when last reference to device kobject is gone. |
1da177e4 | 453 | */ |
43cb76d9 | 454 | static void netdev_release(struct device *d) |
1da177e4 | 455 | { |
43cb76d9 | 456 | struct net_device *dev = to_net_dev(d); |
1da177e4 LT |
457 | |
458 | BUG_ON(dev->reg_state != NETREG_RELEASED); | |
459 | ||
0b815a1a | 460 | kfree(dev->ifalias); |
1da177e4 LT |
461 | kfree((char *)dev - dev->padded); |
462 | } | |
463 | ||
464 | static struct class net_class = { | |
465 | .name = "net", | |
43cb76d9 | 466 | .dev_release = netdev_release, |
8b41d188 | 467 | #ifdef CONFIG_SYSFS |
43cb76d9 | 468 | .dev_attrs = net_class_attributes, |
8b41d188 | 469 | #endif /* CONFIG_SYSFS */ |
1da177e4 | 470 | #ifdef CONFIG_HOTPLUG |
43cb76d9 | 471 | .dev_uevent = netdev_uevent, |
1da177e4 LT |
472 | #endif |
473 | }; | |
474 | ||
9093bbb2 SH |
475 | /* Delete sysfs entries but hold kobject reference until after all |
476 | * netdev references are gone. | |
477 | */ | |
8b41d188 | 478 | void netdev_unregister_kobject(struct net_device * net) |
1da177e4 | 479 | { |
9093bbb2 SH |
480 | struct device *dev = &(net->dev); |
481 | ||
482 | kobject_get(&dev->kobj); | |
3891845e EB |
483 | |
484 | if (dev_net(net) != &init_net) | |
485 | return; | |
486 | ||
9093bbb2 | 487 | device_del(dev); |
1da177e4 LT |
488 | } |
489 | ||
490 | /* Create sysfs entries for network device. */ | |
8b41d188 | 491 | int netdev_register_kobject(struct net_device *net) |
1da177e4 | 492 | { |
43cb76d9 | 493 | struct device *dev = &(net->dev); |
fe9925b5 | 494 | struct attribute_group **groups = net->sysfs_groups; |
1da177e4 | 495 | |
43cb76d9 GKH |
496 | dev->class = &net_class; |
497 | dev->platform_data = net; | |
498 | dev->groups = groups; | |
1da177e4 | 499 | |
fe9925b5 | 500 | BUILD_BUG_ON(BUS_ID_SIZE < IFNAMSIZ); |
a2205472 | 501 | dev_set_name(dev, "%s", net->name); |
1da177e4 | 502 | |
8b41d188 | 503 | #ifdef CONFIG_SYSFS |
96e74088 | 504 | *groups++ = &netstat_group; |
1da177e4 | 505 | |
22bb1be4 | 506 | #ifdef CONFIG_WIRELESS_EXT_SYSFS |
baef1865 | 507 | if (net->wireless_handlers && net->wireless_handlers->get_wireless_stats) |
fe9925b5 | 508 | *groups++ = &wireless_group; |
1da177e4 | 509 | #endif |
8b41d188 | 510 | #endif /* CONFIG_SYSFS */ |
1da177e4 | 511 | |
3891845e EB |
512 | if (dev_net(net) != &init_net) |
513 | return 0; | |
514 | ||
43cb76d9 | 515 | return device_add(dev); |
1da177e4 LT |
516 | } |
517 | ||
b8a9787e JV |
518 | int netdev_class_create_file(struct class_attribute *class_attr) |
519 | { | |
520 | return class_create_file(&net_class, class_attr); | |
521 | } | |
522 | ||
523 | void netdev_class_remove_file(struct class_attribute *class_attr) | |
524 | { | |
525 | class_remove_file(&net_class, class_attr); | |
526 | } | |
527 | ||
528 | EXPORT_SYMBOL(netdev_class_create_file); | |
529 | EXPORT_SYMBOL(netdev_class_remove_file); | |
530 | ||
aaf8cdc3 DL |
531 | void netdev_initialize_kobject(struct net_device *net) |
532 | { | |
533 | struct device *device = &(net->dev); | |
534 | device_initialize(device); | |
535 | } | |
536 | ||
8b41d188 | 537 | int netdev_kobject_init(void) |
1da177e4 LT |
538 | { |
539 | return class_register(&net_class); | |
540 | } |