blob: bee4f300d0c82a4adead252b43949ba3b9e84026 [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)
Wang Chen524ad0a2008-11-12 23:39:10 -080025#define to_bridge(cd) ((struct net_bridge *)netdev_priv(to_net_dev(cd)))
Linus Torvalds1da177e2005-04-16 15:20:36 -070026
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,
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070032 int (*set)(struct net_bridge *, unsigned long))
Linus Torvalds1da177e2005-04-16 15:20:36 -070033{
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;
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070037 int err;
Linus Torvalds1da177e2005-04-16 15:20:36 -070038
39 if (!capable(CAP_NET_ADMIN))
40 return -EPERM;
41
42 val = simple_strtoul(buf, &endp, 0);
43 if (endp == buf)
44 return -EINVAL;
45
46 spin_lock_bh(&br->lock);
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070047 err = (*set)(br, val);
Linus Torvalds1da177e2005-04-16 15:20:36 -070048 spin_unlock_bh(&br->lock);
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070049 return err ? err : len;
Linus Torvalds1da177e2005-04-16 15:20:36 -070050}
51
52
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070053static ssize_t show_forward_delay(struct device *d,
54 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070055{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070056 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->forward_delay));
58}
59
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070060static int set_forward_delay(struct net_bridge *br, unsigned long val)
Linus Torvalds1da177e2005-04-16 15:20:36 -070061{
62 unsigned long delay = clock_t_to_jiffies(val);
63 br->forward_delay = delay;
64 if (br_is_root_bridge(br))
65 br->bridge_forward_delay = delay;
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070066 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070067}
68
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070069static ssize_t store_forward_delay(struct device *d,
70 struct device_attribute *attr,
71 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -070072{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070073 return store_bridge_parm(d, buf, len, set_forward_delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -070074}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070075static DEVICE_ATTR(forward_delay, S_IRUGO | S_IWUSR,
76 show_forward_delay, store_forward_delay);
Linus Torvalds1da177e2005-04-16 15:20:36 -070077
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070078static ssize_t show_hello_time(struct device *d, struct device_attribute *attr,
79 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -070080{
81 return sprintf(buf, "%lu\n",
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070082 jiffies_to_clock_t(to_bridge(d)->hello_time));
Linus Torvalds1da177e2005-04-16 15:20:36 -070083}
84
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070085static int set_hello_time(struct net_bridge *br, unsigned long val)
Linus Torvalds1da177e2005-04-16 15:20:36 -070086{
87 unsigned long t = clock_t_to_jiffies(val);
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070088
89 if (t < HZ)
90 return -EINVAL;
91
Linus Torvalds1da177e2005-04-16 15:20:36 -070092 br->hello_time = t;
93 if (br_is_root_bridge(br))
94 br->bridge_hello_time = t;
Stephen Hemminger8d4698f72008-09-08 13:44:40 -070095 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -070096}
97
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -070098static ssize_t store_hello_time(struct device *d,
99 struct device_attribute *attr, const char *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700100 size_t len)
101{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700102 return store_bridge_parm(d, buf, len, set_hello_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700103}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700104static DEVICE_ATTR(hello_time, S_IRUGO | S_IWUSR, show_hello_time,
105 store_hello_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700106
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700107static ssize_t show_max_age(struct device *d, struct device_attribute *attr,
108 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109{
110 return sprintf(buf, "%lu\n",
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700111 jiffies_to_clock_t(to_bridge(d)->max_age));
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112}
113
Stephen Hemminger8d4698f72008-09-08 13:44:40 -0700114static int set_max_age(struct net_bridge *br, unsigned long val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115{
116 unsigned long t = clock_t_to_jiffies(val);
117 br->max_age = t;
118 if (br_is_root_bridge(br))
119 br->bridge_max_age = t;
Stephen Hemminger8d4698f72008-09-08 13:44:40 -0700120 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700121}
122
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700123static ssize_t store_max_age(struct device *d, struct device_attribute *attr,
124 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700125{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700126 return store_bridge_parm(d, buf, len, set_max_age);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700127}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700128static DEVICE_ATTR(max_age, S_IRUGO | S_IWUSR, show_max_age, store_max_age);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700130static ssize_t show_ageing_time(struct device *d,
131 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700133 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134 return sprintf(buf, "%lu\n", jiffies_to_clock_t(br->ageing_time));
135}
136
Stephen Hemminger8d4698f72008-09-08 13:44:40 -0700137static int set_ageing_time(struct net_bridge *br, unsigned long val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700138{
139 br->ageing_time = clock_t_to_jiffies(val);
Stephen Hemminger8d4698f72008-09-08 13:44:40 -0700140 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700141}
142
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700143static ssize_t store_ageing_time(struct device *d,
144 struct device_attribute *attr,
145 const char *buf, size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700146{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700147 return store_bridge_parm(d, buf, len, set_ageing_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700149static DEVICE_ATTR(ageing_time, S_IRUGO | S_IWUSR, show_ageing_time,
150 store_ageing_time);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700151
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700152static ssize_t show_stp_state(struct device *d,
153 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700155 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700156 return sprintf(buf, "%d\n", br->stp_enabled);
157}
158
Linus Torvalds1da177e2005-04-16 15:20:36 -0700159
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700160static ssize_t store_stp_state(struct device *d,
161 struct device_attribute *attr, const char *buf,
162 size_t len)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700163{
Stephen Hemminger17120882007-08-14 13:21:34 -0700164 struct net_bridge *br = to_bridge(d);
165 char *endp;
166 unsigned long val;
167
168 if (!capable(CAP_NET_ADMIN))
169 return -EPERM;
170
171 val = simple_strtoul(buf, &endp, 0);
172 if (endp == buf)
173 return -EINVAL;
174
Eric W. Biedermanaf38f292009-05-13 17:00:41 +0000175 if (!rtnl_trylock())
176 return restart_syscall();
Stephen Hemminger17120882007-08-14 13:21:34 -0700177 br_stp_set_enabled(br, val);
178 rtnl_unlock();
179
Al Viro35b426c2007-08-19 04:51:26 +0100180 return len;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700181}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700182static DEVICE_ATTR(stp_state, S_IRUGO | S_IWUSR, show_stp_state,
183 store_stp_state);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700184
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700185static ssize_t show_priority(struct device *d, struct device_attribute *attr,
186 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700187{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700188 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189 return sprintf(buf, "%d\n",
190 (br->bridge_id.prio[0] << 8) | br->bridge_id.prio[1]);
191}
192
Stephen Hemminger8d4698f72008-09-08 13:44:40 -0700193static int set_priority(struct net_bridge *br, unsigned long val)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194{
195 br_stp_set_bridge_priority(br, (u16) val);
Stephen Hemminger8d4698f72008-09-08 13:44:40 -0700196 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700197}
198
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700199static ssize_t store_priority(struct device *d, struct device_attribute *attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700200 const char *buf, size_t len)
201{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700202 return store_bridge_parm(d, buf, len, set_priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700204static DEVICE_ATTR(priority, S_IRUGO | S_IWUSR, show_priority, store_priority);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700205
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700206static ssize_t show_root_id(struct device *d, struct device_attribute *attr,
207 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700208{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700209 return br_show_bridge_id(buf, &to_bridge(d)->designated_root);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700210}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700211static DEVICE_ATTR(root_id, S_IRUGO, show_root_id, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700212
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700213static ssize_t show_bridge_id(struct device *d, struct device_attribute *attr,
214 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700215{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700216 return br_show_bridge_id(buf, &to_bridge(d)->bridge_id);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700217}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700218static DEVICE_ATTR(bridge_id, S_IRUGO, show_bridge_id, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700220static ssize_t show_root_port(struct device *d, struct device_attribute *attr,
221 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700223 return sprintf(buf, "%d\n", to_bridge(d)->root_port);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700224}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700225static DEVICE_ATTR(root_port, S_IRUGO, show_root_port, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700226
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700227static ssize_t show_root_path_cost(struct device *d,
228 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700229{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700230 return sprintf(buf, "%d\n", to_bridge(d)->root_path_cost);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700231}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700232static DEVICE_ATTR(root_path_cost, S_IRUGO, show_root_path_cost, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700233
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700234static ssize_t show_topology_change(struct device *d,
235 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700237 return sprintf(buf, "%d\n", to_bridge(d)->topology_change);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700238}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700239static DEVICE_ATTR(topology_change, S_IRUGO, show_topology_change, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700240
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700241static ssize_t show_topology_change_detected(struct device *d,
242 struct device_attribute *attr,
243 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700245 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246 return sprintf(buf, "%d\n", br->topology_change_detected);
247}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700248static DEVICE_ATTR(topology_change_detected, S_IRUGO,
249 show_topology_change_detected, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700251static ssize_t show_hello_timer(struct device *d,
252 struct device_attribute *attr, char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700254 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 return sprintf(buf, "%ld\n", br_timer_value(&br->hello_timer));
256}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700257static DEVICE_ATTR(hello_timer, S_IRUGO, show_hello_timer, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700258
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700259static ssize_t show_tcn_timer(struct device *d, struct device_attribute *attr,
260 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700261{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700262 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700263 return sprintf(buf, "%ld\n", br_timer_value(&br->tcn_timer));
264}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700265static DEVICE_ATTR(tcn_timer, S_IRUGO, show_tcn_timer, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700266
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700267static ssize_t show_topology_change_timer(struct device *d,
268 struct device_attribute *attr,
269 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700271 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700272 return sprintf(buf, "%ld\n", br_timer_value(&br->topology_change_timer));
273}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700274static DEVICE_ATTR(topology_change_timer, S_IRUGO, show_topology_change_timer,
275 NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700277static ssize_t show_gc_timer(struct device *d, struct device_attribute *attr,
278 char *buf)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700280 struct net_bridge *br = to_bridge(d);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 return sprintf(buf, "%ld\n", br_timer_value(&br->gc_timer));
282}
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700283static DEVICE_ATTR(gc_timer, S_IRUGO, show_gc_timer, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700285static ssize_t show_group_addr(struct device *d,
286 struct device_attribute *attr, char *buf)
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 return sprintf(buf, "%x:%x:%x:%x:%x:%x\n",
290 br->group_addr[0], br->group_addr[1],
291 br->group_addr[2], br->group_addr[3],
292 br->group_addr[4], br->group_addr[5]);
293}
294
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700295static ssize_t store_group_addr(struct device *d,
296 struct device_attribute *attr,
297 const char *buf, size_t len)
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800298{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700299 struct net_bridge *br = to_bridge(d);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800300 unsigned new_addr[6];
301 int i;
302
303 if (!capable(CAP_NET_ADMIN))
304 return -EPERM;
305
306 if (sscanf(buf, "%x:%x:%x:%x:%x:%x",
307 &new_addr[0], &new_addr[1], &new_addr[2],
308 &new_addr[3], &new_addr[4], &new_addr[5]) != 6)
309 return -EINVAL;
310
311 /* Must be 01:80:c2:00:00:0X */
312 for (i = 0; i < 5; i++)
313 if (new_addr[i] != br_group_address[i])
314 return -EINVAL;
315
316 if (new_addr[5] & ~0xf)
317 return -EINVAL;
318
Joe Perchesf64f9e72009-11-29 16:55:45 -0800319 if (new_addr[5] == 1 || /* 802.3x Pause address */
320 new_addr[5] == 2 || /* 802.3ad Slow protocols */
321 new_addr[5] == 3) /* 802.1X PAE address */
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800322 return -EINVAL;
323
324 spin_lock_bh(&br->lock);
325 for (i = 0; i < 6; i++)
326 br->group_addr[i] = new_addr[i];
327 spin_unlock_bh(&br->lock);
328 return len;
329}
330
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700331static DEVICE_ATTR(group_addr, S_IRUGO | S_IWUSR,
332 show_group_addr, store_group_addr);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800333
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700334static ssize_t store_flush(struct device *d,
335 struct device_attribute *attr,
336 const char *buf, size_t len)
337{
338 struct net_bridge *br = to_bridge(d);
339
340 if (!capable(CAP_NET_ADMIN))
341 return -EPERM;
342
343 br_fdb_flush(br);
344 return len;
345}
346static DEVICE_ATTR(flush, S_IWUSR, NULL, store_flush);
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800347
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348static struct attribute *bridge_attrs[] = {
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700349 &dev_attr_forward_delay.attr,
350 &dev_attr_hello_time.attr,
351 &dev_attr_max_age.attr,
352 &dev_attr_ageing_time.attr,
353 &dev_attr_stp_state.attr,
354 &dev_attr_priority.attr,
355 &dev_attr_bridge_id.attr,
356 &dev_attr_root_id.attr,
357 &dev_attr_root_path_cost.attr,
358 &dev_attr_root_port.attr,
359 &dev_attr_topology_change.attr,
360 &dev_attr_topology_change_detected.attr,
361 &dev_attr_hello_timer.attr,
362 &dev_attr_tcn_timer.attr,
363 &dev_attr_topology_change_timer.attr,
364 &dev_attr_gc_timer.attr,
365 &dev_attr_group_addr.attr,
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700366 &dev_attr_flush.attr,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700367 NULL
368};
369
370static struct attribute_group bridge_group = {
371 .name = SYSFS_BRIDGE_ATTR,
372 .attrs = bridge_attrs,
373};
374
375/*
376 * Export the forwarding information table as a binary file
377 * The records are struct __fdb_entry.
378 *
379 * Returns the number of bytes read.
380 */
Zhang Rui91a69022007-06-09 13:57:22 +0800381static ssize_t brforward_read(struct kobject *kobj,
382 struct bin_attribute *bin_attr,
383 char *buf, loff_t off, size_t count)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700385 struct device *dev = to_dev(kobj);
386 struct net_bridge *br = to_bridge(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 int n;
388
389 /* must read whole records */
390 if (off % sizeof(struct __fdb_entry) != 0)
391 return -EINVAL;
392
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900393 n = br_fdb_fillbuf(br, buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 count / sizeof(struct __fdb_entry),
395 off / sizeof(struct __fdb_entry));
396
397 if (n > 0)
398 n *= sizeof(struct __fdb_entry);
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 return n;
401}
402
403static struct bin_attribute bridge_forward = {
404 .attr = { .name = SYSFS_BRIDGE_FDB,
Tejun Heo7b595752007-06-14 03:45:17 +0900405 .mode = S_IRUGO, },
Linus Torvalds1da177e2005-04-16 15:20:36 -0700406 .read = brforward_read,
407};
408
409/*
410 * Add entries in sysfs onto the existing network class device
411 * for the bridge.
412 * Adds a attribute group "bridge" containing tuning parameters.
413 * Binary attribute containing the forward table
414 * Sub directory to hold links to interfaces.
415 *
416 * Note: the ifobj exists only to be a subdirectory
417 * to hold links. The ifobj exists in same data structure
418 * as it's parent the bridge so reference counting works.
419 */
420int br_sysfs_addbr(struct net_device *dev)
421{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700422 struct kobject *brobj = &dev->dev.kobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 struct net_bridge *br = netdev_priv(dev);
424 int err;
425
426 err = sysfs_create_group(brobj, &bridge_group);
427 if (err) {
428 pr_info("%s: can't create group %s/%s\n",
Harvey Harrison0dc47872008-03-05 20:47:47 -0800429 __func__, dev->name, bridge_group.name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700430 goto out1;
431 }
432
433 err = sysfs_create_bin_file(brobj, &bridge_forward);
434 if (err) {
Randy Dunlap1842c4b2006-10-25 23:07:37 -0700435 pr_info("%s: can't create attribute file %s/%s\n",
Harvey Harrison0dc47872008-03-05 20:47:47 -0800436 __func__, dev->name, bridge_forward.attr.name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700437 goto out2;
438 }
439
Greg Kroah-Hartman43b98c42007-12-17 15:54:39 -0400440 br->ifobj = kobject_create_and_add(SYSFS_BRIDGE_PORT_SUBDIR, brobj);
441 if (!br->ifobj) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 pr_info("%s: can't add kobject (directory) %s/%s\n",
Harvey Harrison0dc47872008-03-05 20:47:47 -0800443 __func__, dev->name, SYSFS_BRIDGE_PORT_SUBDIR);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700444 goto out3;
445 }
446 return 0;
447 out3:
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700448 sysfs_remove_bin_file(&dev->dev.kobj, &bridge_forward);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700449 out2:
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700450 sysfs_remove_group(&dev->dev.kobj, &bridge_group);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700451 out1:
452 return err;
453
454}
455
456void br_sysfs_delbr(struct net_device *dev)
457{
Greg Kroah-Hartman43cb76d2002-04-09 12:14:34 -0700458 struct kobject *kobj = &dev->dev.kobj;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700459 struct net_bridge *br = netdev_priv(dev);
460
Greg Kroah-Hartman78a2d902007-12-20 08:13:05 -0800461 kobject_put(br->ifobj);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700462 sysfs_remove_bin_file(kobj, &bridge_forward);
463 sysfs_remove_group(kobj, &bridge_group);
464}