blob: 099c753c4213ae814b51bf4e149eeb4f79836224 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * net-sysfs.c - network device class and attributes
3 *
4 * Copyright (c) 2003 Stephen Hemminger <shemminger@osdl.org>
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +09005 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07006 * 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 Dunlap4fc268d2006-01-11 12:17:47 -080012#include <linux/capability.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070013#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>
Johannes Berg8f1546c2009-09-28 15:26:43 +020019#include <net/wext.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070020
Pavel Emelyanov342709e2007-10-23 21:14:45 -070021#include "net-sysfs.h"
22
Eric W. Biederman8b41d182007-09-26 22:02:53 -070023#ifdef CONFIG_SYSFS
Linus Torvalds1da177e2005-04-16 15:20:36 -070024static const char fmt_hex[] = "%#x\n";
David S. Millerd1102b52005-05-29 20:28:25 -070025static const char fmt_long_hex[] = "%#lx\n";
Linus Torvalds1da177e2005-04-16 15:20:36 -070026static const char fmt_dec[] = "%d\n";
27static const char fmt_ulong[] = "%lu\n";
28
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +090029static inline int dev_isalive(const struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070030{
Stephen Hemmingerfe9925b2006-05-06 17:56:03 -070031 return dev->reg_state <= NETREG_REGISTERED;
Linus Torvalds1da177e2005-04-16 15:20:36 -070032}
33
34/* use same locking rules as GIF* ioctl's */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070035static ssize_t netdev_show(const struct device *dev,
36 struct device_attribute *attr, char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -070037 ssize_t (*format)(const struct net_device *, char *))
38{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070039 struct net_device *net = to_net_dev(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -070040 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) \
52static ssize_t format_##field(const struct net_device *net, char *buf) \
53{ \
54 return sprintf(buf, format_string, net->field); \
55} \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070056static ssize_t show_##field(struct device *dev, \
57 struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -070058{ \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070059 return netdev_show(dev, attr, buf, format_##field); \
Linus Torvalds1da177e2005-04-16 15:20:36 -070060}
61
62
63/* use same locking and permission rules as SIF* ioctl's */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070064static ssize_t netdev_store(struct device *dev, struct device_attribute *attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -070065 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
Stephen Hemminger5a5990d2009-02-26 06:49:24 +000080 if (!rtnl_trylock())
Eric W. Biederman336ca572009-05-13 16:57:25 +000081 return restart_syscall();
Stephen Hemminger5a5990d2009-02-26 06:49:24 +000082
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 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
David Woodhouse9d296722008-04-20 16:07:43 -070092NETDEVICE_SHOW(dev_id, fmt_hex);
Kay Sieversfd586ba2005-12-19 01:42:56 +010093NETDEVICE_SHOW(addr_len, fmt_dec);
94NETDEVICE_SHOW(iflink, fmt_dec);
95NETDEVICE_SHOW(ifindex, fmt_dec);
96NETDEVICE_SHOW(features, fmt_long_hex);
97NETDEVICE_SHOW(type, fmt_dec);
Stefan Rompfb00055a2006-03-20 17:09:11 -080098NETDEVICE_SHOW(link_mode, fmt_dec);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
100/* use same locking rules as GIFHWADDR ioctl's */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700101static ssize_t show_address(struct device *dev, struct device_attribute *attr,
102 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103{
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))
Michael Chan7ffc49a2007-12-24 21:28:09 -0800109 ret = sysfs_format_mac(buf, net->dev_addr, net->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700110 read_unlock(&dev_base_lock);
111 return ret;
112}
113
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700114static ssize_t show_broadcast(struct device *dev,
115 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700116{
117 struct net_device *net = to_net_dev(dev);
118 if (dev_isalive(net))
Michael Chan7ffc49a2007-12-24 21:28:09 -0800119 return sysfs_format_mac(buf, net->broadcast, net->addr_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 return -EINVAL;
121}
122
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700123static ssize_t show_carrier(struct device *dev,
124 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125{
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
Andy Gospodarekd519e172009-10-02 09:26:12 +0000133static ssize_t show_speed(struct device *dev,
134 struct device_attribute *attr, char *buf)
135{
136 struct net_device *netdev = to_net_dev(dev);
137 int ret = -EINVAL;
138
139 if (!rtnl_trylock())
140 return restart_syscall();
141
Eric Dumazetac5e3af2009-10-26 01:23:33 +0000142 if (netif_running(netdev) &&
143 netdev->ethtool_ops &&
144 netdev->ethtool_ops->get_settings) {
Andy Gospodarekd519e172009-10-02 09:26:12 +0000145 struct ethtool_cmd cmd = { ETHTOOL_GSET };
146
147 if (!netdev->ethtool_ops->get_settings(netdev, &cmd))
148 ret = sprintf(buf, fmt_dec, ethtool_cmd_speed(&cmd));
149 }
150 rtnl_unlock();
151 return ret;
152}
153
154static ssize_t show_duplex(struct device *dev,
155 struct device_attribute *attr, char *buf)
156{
157 struct net_device *netdev = to_net_dev(dev);
158 int ret = -EINVAL;
159
160 if (!rtnl_trylock())
161 return restart_syscall();
162
Eric Dumazetac5e3af2009-10-26 01:23:33 +0000163 if (netif_running(netdev) &&
164 netdev->ethtool_ops &&
165 netdev->ethtool_ops->get_settings) {
Andy Gospodarekd519e172009-10-02 09:26:12 +0000166 struct ethtool_cmd cmd = { ETHTOOL_GSET };
167
168 if (!netdev->ethtool_ops->get_settings(netdev, &cmd))
169 ret = sprintf(buf, "%s\n", cmd.duplex ? "full" : "half");
170 }
171 rtnl_unlock();
172 return ret;
173}
174
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700175static ssize_t show_dormant(struct device *dev,
176 struct device_attribute *attr, char *buf)
Stefan Rompfb00055a2006-03-20 17:09:11 -0800177{
178 struct net_device *netdev = to_net_dev(dev);
179
180 if (netif_running(netdev))
181 return sprintf(buf, fmt_dec, !!netif_dormant(netdev));
182
183 return -EINVAL;
184}
185
Jan Engelhardt36cbd3d2009-08-05 10:42:58 -0700186static const char *const operstates[] = {
Stefan Rompfb00055a2006-03-20 17:09:11 -0800187 "unknown",
188 "notpresent", /* currently unused */
189 "down",
190 "lowerlayerdown",
191 "testing", /* currently unused */
192 "dormant",
193 "up"
194};
195
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700196static ssize_t show_operstate(struct device *dev,
197 struct device_attribute *attr, char *buf)
Stefan Rompfb00055a2006-03-20 17:09:11 -0800198{
199 const struct net_device *netdev = to_net_dev(dev);
200 unsigned char operstate;
201
202 read_lock(&dev_base_lock);
203 operstate = netdev->operstate;
204 if (!netif_running(netdev))
205 operstate = IF_OPER_DOWN;
206 read_unlock(&dev_base_lock);
207
Adrian Bunke3a5cd92006-04-05 22:19:47 -0700208 if (operstate >= ARRAY_SIZE(operstates))
Stefan Rompfb00055a2006-03-20 17:09:11 -0800209 return -EINVAL; /* should not happen */
210
211 return sprintf(buf, "%s\n", operstates[operstate]);
212}
213
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214/* read-write attributes */
215NETDEVICE_SHOW(mtu, fmt_dec);
216
217static int change_mtu(struct net_device *net, unsigned long new_mtu)
218{
219 return dev_set_mtu(net, (int) new_mtu);
220}
221
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700222static ssize_t store_mtu(struct device *dev, struct device_attribute *attr,
223 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700225 return netdev_store(dev, attr, buf, len, change_mtu);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226}
227
Linus Torvalds1da177e2005-04-16 15:20:36 -0700228NETDEVICE_SHOW(flags, fmt_hex);
229
230static int change_flags(struct net_device *net, unsigned long new_flags)
231{
232 return dev_change_flags(net, (unsigned) new_flags);
233}
234
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700235static ssize_t store_flags(struct device *dev, struct device_attribute *attr,
236 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700238 return netdev_store(dev, attr, buf, len, change_flags);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239}
240
Linus Torvalds1da177e2005-04-16 15:20:36 -0700241NETDEVICE_SHOW(tx_queue_len, fmt_ulong);
242
243static int change_tx_queue_len(struct net_device *net, unsigned long new_len)
244{
245 net->tx_queue_len = new_len;
246 return 0;
247}
248
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700249static ssize_t store_tx_queue_len(struct device *dev,
250 struct device_attribute *attr,
251 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700253 return netdev_store(dev, attr, buf, len, change_tx_queue_len);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254}
255
Stephen Hemminger0b815a12008-09-22 21:28:11 -0700256static ssize_t store_ifalias(struct device *dev, struct device_attribute *attr,
257 const char *buf, size_t len)
258{
259 struct net_device *netdev = to_net_dev(dev);
260 size_t count = len;
261 ssize_t ret;
262
263 if (!capable(CAP_NET_ADMIN))
264 return -EPERM;
265
266 /* ignore trailing newline */
267 if (len > 0 && buf[len - 1] == '\n')
268 --count;
269
Eric W. Biederman336ca572009-05-13 16:57:25 +0000270 if (!rtnl_trylock())
271 return restart_syscall();
Stephen Hemminger0b815a12008-09-22 21:28:11 -0700272 ret = dev_set_alias(netdev, buf, count);
273 rtnl_unlock();
274
275 return ret < 0 ? ret : len;
276}
277
278static ssize_t show_ifalias(struct device *dev,
279 struct device_attribute *attr, char *buf)
280{
281 const struct net_device *netdev = to_net_dev(dev);
282 ssize_t ret = 0;
283
Eric W. Biederman336ca572009-05-13 16:57:25 +0000284 if (!rtnl_trylock())
285 return restart_syscall();
Stephen Hemminger0b815a12008-09-22 21:28:11 -0700286 if (netdev->ifalias)
287 ret = sprintf(buf, "%s\n", netdev->ifalias);
288 rtnl_unlock();
289 return ret;
290}
291
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700292static struct device_attribute net_class_attributes[] = {
Kay Sieversfd586ba2005-12-19 01:42:56 +0100293 __ATTR(addr_len, S_IRUGO, show_addr_len, NULL),
David Woodhouse9d296722008-04-20 16:07:43 -0700294 __ATTR(dev_id, S_IRUGO, show_dev_id, NULL),
Stephen Hemminger0b815a12008-09-22 21:28:11 -0700295 __ATTR(ifalias, S_IRUGO | S_IWUSR, show_ifalias, store_ifalias),
Kay Sieversfd586ba2005-12-19 01:42:56 +0100296 __ATTR(iflink, S_IRUGO, show_iflink, NULL),
297 __ATTR(ifindex, S_IRUGO, show_ifindex, NULL),
298 __ATTR(features, S_IRUGO, show_features, NULL),
299 __ATTR(type, S_IRUGO, show_type, NULL),
Stefan Rompfb00055a2006-03-20 17:09:11 -0800300 __ATTR(link_mode, S_IRUGO, show_link_mode, NULL),
Kay Sieversfd586ba2005-12-19 01:42:56 +0100301 __ATTR(address, S_IRUGO, show_address, NULL),
302 __ATTR(broadcast, S_IRUGO, show_broadcast, NULL),
303 __ATTR(carrier, S_IRUGO, show_carrier, NULL),
Andy Gospodarekd519e172009-10-02 09:26:12 +0000304 __ATTR(speed, S_IRUGO, show_speed, NULL),
305 __ATTR(duplex, S_IRUGO, show_duplex, NULL),
Stefan Rompfb00055a2006-03-20 17:09:11 -0800306 __ATTR(dormant, S_IRUGO, show_dormant, NULL),
307 __ATTR(operstate, S_IRUGO, show_operstate, NULL),
Kay Sieversfd586ba2005-12-19 01:42:56 +0100308 __ATTR(mtu, S_IRUGO | S_IWUSR, show_mtu, store_mtu),
309 __ATTR(flags, S_IRUGO | S_IWUSR, show_flags, store_flags),
310 __ATTR(tx_queue_len, S_IRUGO | S_IWUSR, show_tx_queue_len,
311 store_tx_queue_len),
Kay Sieversfd586ba2005-12-19 01:42:56 +0100312 {}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313};
314
315/* Show a given an attribute in the statistics group */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700316static ssize_t netstat_show(const struct device *d,
317 struct device_attribute *attr, char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 unsigned long offset)
319{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700320 struct net_device *dev = to_net_dev(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 ssize_t ret = -EINVAL;
322
Pavel Emelyanovdf1b86c2007-11-30 00:42:42 +1100323 WARN_ON(offset > sizeof(struct net_device_stats) ||
324 offset % sizeof(unsigned long) != 0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700325
326 read_lock(&dev_base_lock);
Pavel Emelyanov96e74082008-05-21 14:12:46 -0700327 if (dev_isalive(dev)) {
Stephen Hemmingereeda3fd2008-11-19 21:40:23 -0800328 const struct net_device_stats *stats = dev_get_stats(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700329 ret = sprintf(buf, fmt_ulong,
330 *(unsigned long *)(((u8 *) stats) + offset));
Pavel Emelyanov96e74082008-05-21 14:12:46 -0700331 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700332 read_unlock(&dev_base_lock);
333 return ret;
334}
335
336/* generate a read-only statistics attribute */
337#define NETSTAT_ENTRY(name) \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700338static ssize_t show_##name(struct device *d, \
339 struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700340{ \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700341 return netstat_show(d, attr, buf, \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 offsetof(struct net_device_stats, name)); \
343} \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700344static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345
346NETSTAT_ENTRY(rx_packets);
347NETSTAT_ENTRY(tx_packets);
348NETSTAT_ENTRY(rx_bytes);
349NETSTAT_ENTRY(tx_bytes);
350NETSTAT_ENTRY(rx_errors);
351NETSTAT_ENTRY(tx_errors);
352NETSTAT_ENTRY(rx_dropped);
353NETSTAT_ENTRY(tx_dropped);
354NETSTAT_ENTRY(multicast);
355NETSTAT_ENTRY(collisions);
356NETSTAT_ENTRY(rx_length_errors);
357NETSTAT_ENTRY(rx_over_errors);
358NETSTAT_ENTRY(rx_crc_errors);
359NETSTAT_ENTRY(rx_frame_errors);
360NETSTAT_ENTRY(rx_fifo_errors);
361NETSTAT_ENTRY(rx_missed_errors);
362NETSTAT_ENTRY(tx_aborted_errors);
363NETSTAT_ENTRY(tx_carrier_errors);
364NETSTAT_ENTRY(tx_fifo_errors);
365NETSTAT_ENTRY(tx_heartbeat_errors);
366NETSTAT_ENTRY(tx_window_errors);
367NETSTAT_ENTRY(rx_compressed);
368NETSTAT_ENTRY(tx_compressed);
369
370static struct attribute *netstat_attrs[] = {
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700371 &dev_attr_rx_packets.attr,
372 &dev_attr_tx_packets.attr,
373 &dev_attr_rx_bytes.attr,
374 &dev_attr_tx_bytes.attr,
375 &dev_attr_rx_errors.attr,
376 &dev_attr_tx_errors.attr,
377 &dev_attr_rx_dropped.attr,
378 &dev_attr_tx_dropped.attr,
379 &dev_attr_multicast.attr,
380 &dev_attr_collisions.attr,
381 &dev_attr_rx_length_errors.attr,
382 &dev_attr_rx_over_errors.attr,
383 &dev_attr_rx_crc_errors.attr,
384 &dev_attr_rx_frame_errors.attr,
385 &dev_attr_rx_fifo_errors.attr,
386 &dev_attr_rx_missed_errors.attr,
387 &dev_attr_tx_aborted_errors.attr,
388 &dev_attr_tx_carrier_errors.attr,
389 &dev_attr_tx_fifo_errors.attr,
390 &dev_attr_tx_heartbeat_errors.attr,
391 &dev_attr_tx_window_errors.attr,
392 &dev_attr_rx_compressed.attr,
393 &dev_attr_tx_compressed.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 NULL
395};
396
397
398static struct attribute_group netstat_group = {
399 .name = "statistics",
400 .attrs = netstat_attrs,
401};
402
Johannes Berg22bb1be2008-07-10 11:16:47 +0200403#ifdef CONFIG_WIRELESS_EXT_SYSFS
Linus Torvalds1da177e2005-04-16 15:20:36 -0700404/* helper function that does all the locking etc for wireless stats */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700405static ssize_t wireless_show(struct device *d, char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 ssize_t (*format)(const struct iw_statistics *,
407 char *))
408{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700409 struct net_device *dev = to_net_dev(d);
Johannes Berg8f1546c2009-09-28 15:26:43 +0200410 const struct iw_statistics *iw;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700411 ssize_t ret = -EINVAL;
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900412
Eric W. Biedermanb8afe642010-02-19 13:23:47 +0000413 if (!rtnl_trylock())
414 return restart_syscall();
Andrey Borzenkov6dd214b2006-01-09 20:51:28 -0800415 if (dev_isalive(dev)) {
Johannes Berg8f1546c2009-09-28 15:26:43 +0200416 iw = get_wireless_stats(dev);
417 if (iw)
Andrey Borzenkov6dd214b2006-01-09 20:51:28 -0800418 ret = (*format)(iw, buf);
419 }
Johannes Berga160ee62009-10-05 02:22:23 -0700420 rtnl_unlock();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421
422 return ret;
423}
424
425/* show function template for wireless fields */
426#define WIRELESS_SHOW(name, field, format_string) \
427static ssize_t format_iw_##name(const struct iw_statistics *iw, char *buf) \
428{ \
429 return sprintf(buf, format_string, iw->field); \
430} \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700431static ssize_t show_iw_##name(struct device *d, \
432 struct device_attribute *attr, char *buf) \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433{ \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700434 return wireless_show(d, buf, format_iw_##name); \
Linus Torvalds1da177e2005-04-16 15:20:36 -0700435} \
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700436static DEVICE_ATTR(name, S_IRUGO, show_iw_##name, NULL)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437
438WIRELESS_SHOW(status, status, fmt_hex);
439WIRELESS_SHOW(link, qual.qual, fmt_dec);
440WIRELESS_SHOW(level, qual.level, fmt_dec);
441WIRELESS_SHOW(noise, qual.noise, fmt_dec);
442WIRELESS_SHOW(nwid, discard.nwid, fmt_dec);
443WIRELESS_SHOW(crypt, discard.code, fmt_dec);
444WIRELESS_SHOW(fragment, discard.fragment, fmt_dec);
445WIRELESS_SHOW(misc, discard.misc, fmt_dec);
446WIRELESS_SHOW(retries, discard.retries, fmt_dec);
447WIRELESS_SHOW(beacon, miss.beacon, fmt_dec);
448
449static struct attribute *wireless_attrs[] = {
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700450 &dev_attr_status.attr,
451 &dev_attr_link.attr,
452 &dev_attr_level.attr,
453 &dev_attr_noise.attr,
454 &dev_attr_nwid.attr,
455 &dev_attr_crypt.attr,
456 &dev_attr_fragment.attr,
457 &dev_attr_retries.attr,
458 &dev_attr_misc.attr,
459 &dev_attr_beacon.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700460 NULL
461};
462
463static struct attribute_group wireless_group = {
464 .name = "wireless",
465 .attrs = wireless_attrs,
466};
467#endif
468
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700469#endif /* CONFIG_SYSFS */
470
Linus Torvalds1da177e2005-04-16 15:20:36 -0700471#ifdef CONFIG_HOTPLUG
Kay Sievers7eff2e72007-08-14 15:15:12 +0200472static int netdev_uevent(struct device *d, struct kobj_uevent_env *env)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700474 struct net_device *dev = to_net_dev(d);
Kay Sievers7eff2e72007-08-14 15:15:12 +0200475 int retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700476
Daniel Lezcano09bb5212008-11-25 16:46:37 -0800477 if (!net_eq(dev_net(dev), &init_net))
478 return 0;
479
Kay Sievers312c0042005-11-16 09:00:00 +0100480 /* pass interface to uevent. */
Kay Sievers7eff2e72007-08-14 15:15:12 +0200481 retval = add_uevent_var(env, "INTERFACE=%s", dev->name);
Eric Rannaudbf624562007-03-30 22:23:12 -0700482 if (retval)
483 goto exit;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700484
Jean Tourrilhesca2f37d2007-03-07 10:49:30 -0800485 /* pass ifindex to uevent.
486 * ifindex is useful as it won't change (interface name may change)
487 * and is what RtNetlink uses natively. */
Kay Sievers7eff2e72007-08-14 15:15:12 +0200488 retval = add_uevent_var(env, "IFINDEX=%d", dev->ifindex);
Jean Tourrilhesca2f37d2007-03-07 10:49:30 -0800489
Eric Rannaudbf624562007-03-30 22:23:12 -0700490exit:
Eric Rannaudbf624562007-03-30 22:23:12 -0700491 return retval;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700492}
493#endif
494
495/*
YOSHIFUJI Hideaki4ec93ed2007-02-09 23:24:36 +0900496 * netdev_release -- destroy and free a dead device.
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700497 * Called when last reference to device kobject is gone.
Linus Torvalds1da177e2005-04-16 15:20:36 -0700498 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700499static void netdev_release(struct device *d)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700500{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700501 struct net_device *dev = to_net_dev(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700502
503 BUG_ON(dev->reg_state != NETREG_RELEASED);
504
Stephen Hemminger0b815a12008-09-22 21:28:11 -0700505 kfree(dev->ifalias);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700506 kfree((char *)dev - dev->padded);
507}
508
509static struct class net_class = {
510 .name = "net",
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700511 .dev_release = netdev_release,
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700512#ifdef CONFIG_SYSFS
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700513 .dev_attrs = net_class_attributes,
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700514#endif /* CONFIG_SYSFS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700515#ifdef CONFIG_HOTPLUG
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700516 .dev_uevent = netdev_uevent,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700517#endif
518};
519
Stephen Hemminger9093bbb2007-05-19 15:39:25 -0700520/* Delete sysfs entries but hold kobject reference until after all
521 * netdev references are gone.
522 */
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700523void netdev_unregister_kobject(struct net_device * net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700524{
Stephen Hemminger9093bbb2007-05-19 15:39:25 -0700525 struct device *dev = &(net->dev);
526
527 kobject_get(&dev->kobj);
Eric W. Biederman38918452008-10-27 17:51:47 -0700528
Octavian Purdila09ad9bc2009-11-25 15:14:13 -0800529 if (!net_eq(dev_net(net), &init_net))
Eric W. Biederman38918452008-10-27 17:51:47 -0700530 return;
531
Stephen Hemminger9093bbb2007-05-19 15:39:25 -0700532 device_del(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700533}
534
535/* Create sysfs entries for network device. */
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700536int netdev_register_kobject(struct net_device *net)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700537{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700538 struct device *dev = &(net->dev);
David Brownella4dbd672009-06-24 10:06:31 -0700539 const struct attribute_group **groups = net->sysfs_groups;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700540
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700541 dev->class = &net_class;
542 dev->platform_data = net;
543 dev->groups = groups;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700544
Stephen Hemmingera2205472009-03-09 13:51:55 +0000545 dev_set_name(dev, "%s", net->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700546
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700547#ifdef CONFIG_SYSFS
Eric W. Biederman0c509a62009-10-29 14:18:21 +0000548 /* Allow for a device specific group */
549 if (*groups)
550 groups++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700551
Eric W. Biederman0c509a62009-10-29 14:18:21 +0000552 *groups++ = &netstat_group;
Johannes Berg22bb1be2008-07-10 11:16:47 +0200553#ifdef CONFIG_WIRELESS_EXT_SYSFS
Johannes Berg3d23e342009-09-29 23:27:28 +0200554 if (net->ieee80211_ptr)
Stephen Hemmingerfe9925b2006-05-06 17:56:03 -0700555 *groups++ = &wireless_group;
Johannes Berg3d23e342009-09-29 23:27:28 +0200556#ifdef CONFIG_WIRELESS_EXT
557 else if (net->wireless_handlers)
558 *groups++ = &wireless_group;
559#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560#endif
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700561#endif /* CONFIG_SYSFS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700562
Octavian Purdila09ad9bc2009-11-25 15:14:13 -0800563 if (!net_eq(dev_net(net), &init_net))
Eric W. Biederman38918452008-10-27 17:51:47 -0700564 return 0;
565
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700566 return device_add(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700567}
568
Jay Vosburghb8a97872008-06-13 18:12:04 -0700569int netdev_class_create_file(struct class_attribute *class_attr)
570{
571 return class_create_file(&net_class, class_attr);
572}
573
574void netdev_class_remove_file(struct class_attribute *class_attr)
575{
576 class_remove_file(&net_class, class_attr);
577}
578
579EXPORT_SYMBOL(netdev_class_create_file);
580EXPORT_SYMBOL(netdev_class_remove_file);
581
Daniel Lezcanoaaf8cdc2008-05-02 17:00:58 -0700582void netdev_initialize_kobject(struct net_device *net)
583{
584 struct device *device = &(net->dev);
585 device_initialize(device);
586}
587
Eric W. Biederman8b41d182007-09-26 22:02:53 -0700588int netdev_kobject_init(void)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700589{
590 return class_register(&net_class);
591}