blob: 9cf0538d1717e4b633c6bc2e732bd64582b1ca42 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Sysfs attributes of bridge ports
3 * Linux ethernet bridge
4 *
5 * Authors:
6 * Stephen Hemminger <shemminger@osdl.org>
7 *
8 * This program is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU General Public License
10 * as published by the Free Software Foundation; either version
11 * 2 of the License, or (at your option) any later version.
12 */
13
Randy Dunlap4fc268d2006-01-11 12:17:47 -080014#include <linux/capability.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070015#include <linux/kernel.h>
16#include <linux/netdevice.h>
17#include <linux/if_bridge.h>
18#include <linux/rtnetlink.h>
19#include <linux/spinlock.h>
20#include <linux/times.h>
21
22#include "br_private.h"
23
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070024#define to_dev(obj) container_of(obj, struct device, kobj)
Linus Torvalds1da177e2005-04-16 15:20:36 -070025#define to_bridge(cd) ((struct net_bridge *)(to_net_dev(cd)->priv))
26
27/*
28 * Common code for storing bridge parameters.
29 */
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070030static ssize_t store_bridge_parm(struct device *d,
Linus Torvalds1da177e2005-04-16 15:20:36 -070031 const char *buf, size_t len,
32 void (*set)(struct net_bridge *, unsigned long))
33{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070034 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -070035 char *endp;
36 unsigned long val;
37
38 if (!capable(CAP_NET_ADMIN))
39 return -EPERM;
40
41 val = simple_strtoul(buf, &endp, 0);
42 if (endp == buf)
43 return -EINVAL;
44
45 spin_lock_bh(&br->lock);
46 (*set)(br, val);
47 spin_unlock_bh(&br->lock);
48 return len;
49}
50
51
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070052static ssize_t show_forward_delay(struct device *d,
53 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070054{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070055 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -070056 return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay));
57}
58
59static void set_forward_delay(struct net_bridge *br, unsigned long val)
60{
61 unsigned long delay = clock_t_to_jiffies(val);
62 br->forward_delay = delay;
63 if (br_is_root_bridge(br))
64 br->bridge_forward_delay = delay;
65}
66
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070067static ssize_t store_forward_delay(struct device *d,
68 struct device_attribute *attr,
69 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070070{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070071 return store_bridge_parm(d, buf, len, set_forward_delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -070072}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070073static DEVICE_ATTR(forward_delay, S_IRUGO | S_IWUSR,
74 show_forward_delay, store_forward_delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -070075
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070076static ssize_t show_hello_time(struct device *d, struct device_attribute *attr,
77 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070078{
79 return sprintf(buf, "%lu\n",
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070080 jiffies_to_clock_t(to_bridge(d)->hello_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -070081}
82
83static void set_hello_time(struct net_bridge *br, unsigned long val)
84{
85 unsigned long t = clock_t_to_jiffies(val);
86 br->hello_time = t;
87 if (br_is_root_bridge(br))
88 br->bridge_hello_time = t;
89}
90
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070091static ssize_t store_hello_time(struct device *d,
92 struct device_attribute *attr, const char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -070093 size_t len)
94{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070095 return store_bridge_parm(d, buf, len, set_hello_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -070096}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070097static DEVICE_ATTR(hello_time, S_IRUGO | S_IWUSR, show_hello_time,
98 store_hello_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -070099
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700100static ssize_t show_max_age(struct device *d, struct device_attribute *attr,
101 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700102{
103 return sprintf(buf, "%lu\n",
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700104 jiffies_to_clock_t(to_bridge(d)->max_age));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700105}
106
107static void set_max_age(struct net_bridge *br, unsigned long val)
108{
109 unsigned long t = clock_t_to_jiffies(val);
110 br->max_age = t;
111 if (br_is_root_bridge(br))
112 br->bridge_max_age = t;
113}
114
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700115static ssize_t store_max_age(struct device *d, struct device_attribute *attr,
116 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700117{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700118 return store_bridge_parm(d, buf, len, set_max_age);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700119}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700120static DEVICE_ATTR(max_age, S_IRUGO | S_IWUSR, show_max_age, store_max_age);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700122static ssize_t show_ageing_time(struct device *d,
123 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700124{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700125 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126 return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time));
127}
128
129static void set_ageing_time(struct net_bridge *br, unsigned long val)
130{
131 br->ageing_time = clock_t_to_jiffies(val);
132}
133
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700134static ssize_t store_ageing_time(struct device *d,
135 struct device_attribute *attr,
136 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700137{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700138 return store_bridge_parm(d, buf, len, set_ageing_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700140static DEVICE_ATTR(ageing_time, S_IRUGO | S_IWUSR, show_ageing_time,
141 store_ageing_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700142
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700143static ssize_t show_stp_state(struct device *d,
144 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700146 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147 return sprintf(buf, "%d\n", br->stp_enabled);
148}
149
Linus Torvalds1da177e2005-04-16 15:20:36 -0700150
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700151static ssize_t store_stp_state(struct device *d,
152 struct device_attribute *attr, const char *buf,
153 size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154{
Stephen Hemminger17120882007-08-14 13:21:34 -0700155 struct net_bridge *br = to_bridge(d);
156 char *endp;
157 unsigned long val;
158
159 if (!capable(CAP_NET_ADMIN))
160 return -EPERM;
161
162 val = simple_strtoul(buf, &endp, 0);
163 if (endp == buf)
164 return -EINVAL;
165
166 rtnl_lock();
167 br_stp_set_enabled(br, val);
168 rtnl_unlock();
169
Al Viro35b426c2007-08-19 04:51:26 +0100170 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700171}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700172static DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state,
173 store_stp_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700174
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700175static ssize_t show_priority(struct device *d, struct device_attribute *attr,
176 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700177{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700178 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700179 return sprintf(buf, "%d\n",
180 (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]);
181}
182
183static void set_priority(struct net_bridge *br, unsigned long val)
184{
185 br_stp_set_bridge_priority(br, (u16) val);
186}
187
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700188static ssize_t store_priority(struct device *d, struct device_attribute *attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 const char *buf, size_t len)
190{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700191 return store_bridge_parm(d, buf, len, set_priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700193static DEVICE_ATTR(priority, S_IRUGO | S_IWUSR, show_priority, store_priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700195static ssize_t show_root_id(struct device *d, struct device_attribute *attr,
196 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700198 return br_show_bridge_id(buf, &to_bridge(d)->designated_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700200static DEVICE_ATTR(root_id, S_IRUGO, show_root_id, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700201
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700202static ssize_t show_bridge_id(struct device *d, struct device_attribute *attr,
203 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700205 return br_show_bridge_id(buf, &to_bridge(d)->bridge_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700206}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700207static DEVICE_ATTR(bridge_id, S_IRUGO, show_bridge_id, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700209static ssize_t show_root_port(struct device *d, struct device_attribute *attr,
210 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700211{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700212 return sprintf(buf, "%d\n", to_bridge(d)->root_port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700213}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700214static DEVICE_ATTR(root_port, S_IRUGO, show_root_port, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700216static ssize_t show_root_path_cost(struct device *d,
217 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700218{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700219 return sprintf(buf, "%d\n", to_bridge(d)->root_path_cost);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700220}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700221static DEVICE_ATTR(root_path_cost, S_IRUGO, show_root_path_cost, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700223static ssize_t show_topology_change(struct device *d,
224 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700226 return sprintf(buf, "%d\n", to_bridge(d)->topology_change);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700227}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700228static DEVICE_ATTR(topology_change, S_IRUGO, show_topology_change, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700230static ssize_t show_topology_change_detected(struct device *d,
231 struct device_attribute *attr,
232 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700234 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700235 return sprintf(buf, "%d\n", br->topology_change_detected);
236}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700237static DEVICE_ATTR(topology_change_detected, S_IRUGO,
238 show_topology_change_detected, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700239
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700240static ssize_t show_hello_timer(struct device *d,
241 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700243 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 return sprintf(buf, "%ld\n", br_timer_value(&br->hello_timer));
245}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700246static DEVICE_ATTR(hello_timer, S_IRUGO, show_hello_timer, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700248static ssize_t show_tcn_timer(struct device *d, struct device_attribute *attr,
249 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700251 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 return sprintf(buf, "%ld\n", br_timer_value(&br->tcn_timer));
253}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700254static DEVICE_ATTR(tcn_timer, S_IRUGO, show_tcn_timer, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700256static ssize_t show_topology_change_timer(struct device *d,
257 struct device_attribute *attr,
258 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700260 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261 return sprintf(buf, "%ld\n", br_timer_value(&br->topology_change_timer));
262}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700263static DEVICE_ATTR(topology_change_timer, S_IRUGO, show_topology_change_timer,
264 NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700266static ssize_t show_gc_timer(struct device *d, struct device_attribute *attr,
267 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700268{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700269 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270 return sprintf(buf, "%ld\n", br_timer_value(&br->gc_timer));
271}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700272static DEVICE_ATTR(gc_timer, S_IRUGO, show_gc_timer, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700274static ssize_t show_group_addr(struct device *d,
275 struct device_attribute *attr, char *buf)
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800276{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700277 struct net_bridge *br = to_bridge(d);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800278 return sprintf(buf, "%x:%x:%x:%x:%x:%x\n",
279 br->group_addr[0], br->group_addr[1],
280 br->group_addr[2], br->group_addr[3],
281 br->group_addr[4], br->group_addr[5]);
282}
283
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700284static ssize_t store_group_addr(struct device *d,
285 struct device_attribute *attr,
286 const char *buf, size_t len)
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800287{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700288 struct net_bridge *br = to_bridge(d);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800289 unsigned new_addr[6];
290 int i;
291
292 if (!capable(CAP_NET_ADMIN))
293 return -EPERM;
294
295 if (sscanf(buf, "%x:%x:%x:%x:%x:%x",
296 &new_addr[0], &new_addr[1], &new_addr[2],
297 &new_addr[3], &new_addr[4], &new_addr[5]) != 6)
298 return -EINVAL;
299
300 /* Must be 01:80:c2:00:00:0X */
301 for (i = 0; i < 5; i++)
302 if (new_addr[i] != br_group_address[i])
303 return -EINVAL;
304
305 if (new_addr[5] & ~0xf)
306 return -EINVAL;
307
308 if (new_addr[5] == 1 /* 802.3x Pause address */
309 || new_addr[5] == 2 /* 802.3ad Slow protocols */
310 || new_addr[5] == 3) /* 802.1X PAE address */
311 return -EINVAL;
312
313 spin_lock_bh(&br->lock);
314 for (i = 0; i < 6; i++)
315 br->group_addr[i] = new_addr[i];
316 spin_unlock_bh(&br->lock);
317 return len;
318}
319
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700320static DEVICE_ATTR(group_addr, S_IRUGO | S_IWUSR,
321 show_group_addr, store_group_addr);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800322
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700323static ssize_t store_flush(struct device *d,
324 struct device_attribute *attr,
325 const char *buf, size_t len)
326{
327 struct net_bridge *br = to_bridge(d);
328
329 if (!capable(CAP_NET_ADMIN))
330 return -EPERM;
331
332 br_fdb_flush(br);
333 return len;
334}
335static DEVICE_ATTR(flush, S_IWUSR, NULL, store_flush);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800336
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337static struct attribute *bridge_attrs[] = {
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700338 &dev_attr_forward_delay.attr,
339 &dev_attr_hello_time.attr,
340 &dev_attr_max_age.attr,
341 &dev_attr_ageing_time.attr,
342 &dev_attr_stp_state.attr,
343 &dev_attr_priority.attr,
344 &dev_attr_bridge_id.attr,
345 &dev_attr_root_id.attr,
346 &dev_attr_root_path_cost.attr,
347 &dev_attr_root_port.attr,
348 &dev_attr_topology_change.attr,
349 &dev_attr_topology_change_detected.attr,
350 &dev_attr_hello_timer.attr,
351 &dev_attr_tcn_timer.attr,
352 &dev_attr_topology_change_timer.attr,
353 &dev_attr_gc_timer.attr,
354 &dev_attr_group_addr.attr,
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700355 &dev_attr_flush.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700356 NULL
357};
358
359static struct attribute_group bridge_group = {
360 .name = SYSFS_BRIDGE_ATTR,
361 .attrs = bridge_attrs,
362};
363
364/*
365 * Export the forwarding information table as a binary file
366 * The records are struct __fdb_entry.
367 *
368 * Returns the number of bytes read.
369 */
Zhang Rui91a69022007-06-09 13:57:22 +0800370static ssize_t brforward_read(struct kobject *kobj,
371 struct bin_attribute *bin_attr,
372 char *buf, loff_t off, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700374 struct device *dev = to_dev(kobj);
375 struct net_bridge *br = to_bridge(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 int n;
377
378 /* must read whole records */
379 if (off % sizeof(struct __fdb_entry) != 0)
380 return -EINVAL;
381
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900382 n = br_fdb_fillbuf(br, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 count / sizeof(struct __fdb_entry),
384 off / sizeof(struct __fdb_entry));
385
386 if (n > 0)
387 n *= sizeof(struct __fdb_entry);
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900388
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 return n;
390}
391
392static struct bin_attribute bridge_forward = {
393 .attr = { .name = SYSFS_BRIDGE_FDB,
Tejun Heo7b595752007-06-14 03:45:17 +0900394 .mode = S_IRUGO, },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 .read = brforward_read,
396};
397
398/*
399 * Add entries in sysfs onto the existing network class device
400 * for the bridge.
401 * Adds a attribute group "bridge" containing tuning parameters.
402 * Binary attribute containing the forward table
403 * Sub directory to hold links to interfaces.
404 *
405 * Note: the ifobj exists only to be a subdirectory
406 * to hold links. The ifobj exists in same data structure
407 * as it's parent the bridge so reference counting works.
408 */
409int br_sysfs_addbr(struct net_device *dev)
410{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700411 struct kobject *brobj = &dev->dev.kobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700412 struct net_bridge *br = netdev_priv(dev);
413 int err;
414
415 err = sysfs_create_group(brobj, &bridge_group);
416 if (err) {
417 pr_info("%s: can't create group %s/%s\n",
418 __FUNCTION__, dev->name, bridge_group.name);
419 goto out1;
420 }
421
422 err = sysfs_create_bin_file(brobj, &bridge_forward);
423 if (err) {
Randy Dunlap1842c4b2006-10-25 23:07:37 -0700424 pr_info("%s: can't create attribute file %s/%s\n",
Linus Torvalds1da177e2005-04-16 15:20:36 -0700425 __FUNCTION__, dev->name, bridge_forward.attr.name);
426 goto out2;
427 }
428
Greg Kroah-Hartman43b98c42007-12-17 15:54:39 -0400429 br->ifobj = kobject_create_and_add(SYSFS_BRIDGE_PORT_SUBDIR, brobj);
430 if (!br->ifobj) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 pr_info("%s: can't add kobject (directory) %s/%s\n",
Greg Kroah-Hartman43b98c42007-12-17 15:54:39 -0400432 __FUNCTION__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700433 goto out3;
434 }
435 return 0;
436 out3:
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700437 sysfs_remove_bin_file(&dev->dev.kobj, &bridge_forward);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700438 out2:
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700439 sysfs_remove_group(&dev->dev.kobj, &bridge_group);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700440 out1:
441 return err;
442
443}
444
445void br_sysfs_delbr(struct net_device *dev)
446{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700447 struct kobject *kobj = &dev->dev.kobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700448 struct net_bridge *br = netdev_priv(dev);
449
Greg Kroah-Hartman78a2d902007-12-20 08:13:05 -0800450 kobject_put(br->ifobj);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 sysfs_remove_bin_file(kobj, &bridge_forward);
452 sysfs_remove_group(kobj, &bridge_group);
453}