Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Device handling code | |
4 | * Linux ethernet bridge | |
5 | * | |
6 | * Authors: | |
7 | * Lennert Buytenhek <buytenh@gnu.org> | |
1da177e4 LT |
8 | */ |
9 | ||
10 | #include <linux/kernel.h> | |
11 | #include <linux/netdevice.h> | |
c06ee961 | 12 | #include <linux/netpoll.h> |
4505a3ef | 13 | #include <linux/etherdevice.h> |
edb5e46f | 14 | #include <linux/ethtool.h> |
c06ee961 | 15 | #include <linux/list.h> |
ea2d9b41 | 16 | #include <linux/netfilter_bridge.h> |
4505a3ef | 17 | |
7c0f6ba6 | 18 | #include <linux/uaccess.h> |
1da177e4 LT |
19 | #include "br_private.h" |
20 | ||
161f65ba VY |
21 | #define COMMON_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA | \ |
22 | NETIF_F_GSO_MASK | NETIF_F_HW_CSUM) | |
23 | ||
1a4ba64d PNA |
24 | const struct nf_br_ops __rcu *nf_br_ops __read_mostly; |
25 | EXPORT_SYMBOL_GPL(nf_br_ops); | |
26 | ||
eeaf61d8 | 27 | /* net device transmit always called with BH disabled */ |
6fef4c0c | 28 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev) |
1da177e4 LT |
29 | { |
30 | struct net_bridge *br = netdev_priv(dev); | |
1da177e4 | 31 | struct net_bridge_fdb_entry *dst; |
c4fcb78c | 32 | struct net_bridge_mdb_entry *mdst; |
8f84985f | 33 | struct pcpu_sw_netstats *brstats = this_cpu_ptr(br->stats); |
1a4ba64d | 34 | const struct nf_br_ops *nf_ops; |
a580c76d | 35 | u8 state = BR_STATE_FORWARDING; |
31a4562d | 36 | const unsigned char *dest; |
78851988 | 37 | u16 vid = 0; |
1da177e4 | 38 | |
fd65e5a9 NA |
39 | memset(skb->cb, 0, sizeof(struct br_input_skb_cb)); |
40 | ||
c03307ea | 41 | rcu_read_lock(); |
1a4ba64d PNA |
42 | nf_ops = rcu_dereference(nf_br_ops); |
43 | if (nf_ops && nf_ops->br_dev_xmit_hook(skb)) { | |
c03307ea | 44 | rcu_read_unlock(); |
ea2d9b41 BDS |
45 | return NETDEV_TX_OK; |
46 | } | |
ea2d9b41 | 47 | |
406818ff | 48 | u64_stats_update_begin(&brstats->syncp); |
14bb4789 | 49 | brstats->tx_packets++; |
50 | brstats->tx_bytes += skb->len; | |
406818ff | 51 | u64_stats_update_end(&brstats->syncp); |
6088a539 | 52 | |
f1c2eddf | 53 | br_switchdev_frame_unmark(skb); |
14bb4789 | 54 | BR_INPUT_SKB_CB(skb)->brdev = dev; |
3c171f49 | 55 | BR_INPUT_SKB_CB(skb)->frag_max_size = 0; |
1da177e4 | 56 | |
459a98ed | 57 | skb_reset_mac_header(skb); |
1da177e4 LT |
58 | skb_pull(skb, ETH_HLEN); |
59 | ||
a580c76d | 60 | if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid, &state)) |
12464bb8 TM |
61 | goto out; |
62 | ||
057658cb | 63 | if (IS_ENABLED(CONFIG_INET) && |
823d81b0 NA |
64 | (eth_hdr(skb)->h_proto == htons(ETH_P_ARP) || |
65 | eth_hdr(skb)->h_proto == htons(ETH_P_RARP)) && | |
c69c2cd4 | 66 | br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED)) { |
057658cb | 67 | br_do_proxy_suppress_arp(skb, br, vid, NULL); |
ed842fae RP |
68 | } else if (IS_ENABLED(CONFIG_IPV6) && |
69 | skb->protocol == htons(ETH_P_IPV6) && | |
c69c2cd4 | 70 | br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED) && |
ed842fae RP |
71 | pskb_may_pull(skb, sizeof(struct ipv6hdr) + |
72 | sizeof(struct nd_msg)) && | |
73 | ipv6_hdr(skb)->nexthdr == IPPROTO_ICMPV6) { | |
74 | struct nd_msg *msg, _msg; | |
75 | ||
76 | msg = br_is_nd_neigh_msg(skb, &_msg); | |
77 | if (msg) | |
78 | br_do_suppress_nd(skb, br, vid, NULL, msg); | |
057658cb RP |
79 | } |
80 | ||
31a4562d | 81 | dest = eth_hdr(skb)->h_dest; |
37b090e6 | 82 | if (is_broadcast_ether_addr(dest)) { |
8addd5e7 | 83 | br_flood(br, skb, BR_PKT_BROADCAST, false, true); |
37b090e6 | 84 | } else if (is_multicast_ether_addr(dest)) { |
91d2c34a | 85 | if (unlikely(netpoll_tx_running(dev))) { |
8addd5e7 | 86 | br_flood(br, skb, BR_PKT_MULTICAST, false, true); |
91d2c34a HX |
87 | goto out; |
88 | } | |
06499098 | 89 | if (br_multicast_rcv(br, NULL, skb, vid)) { |
6d1d1d39 | 90 | kfree_skb(skb); |
c4fcb78c | 91 | goto out; |
6d1d1d39 | 92 | } |
c4fcb78c | 93 | |
fbca58a2 | 94 | mdst = br_mdb_get(br, skb, vid); |
b00589af | 95 | if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) && |
cc0fdd80 | 96 | br_multicast_querier_exists(br, eth_hdr(skb))) |
37b090e6 | 97 | br_multicast_flood(mdst, skb, false, true); |
c4fcb78c | 98 | else |
8addd5e7 | 99 | br_flood(br, skb, BR_PKT_MULTICAST, false, true); |
bfd0aeac | 100 | } else if ((dst = br_fdb_find_rcu(br, dest, vid)) != NULL) { |
37b090e6 NA |
101 | br_forward(dst->dst, skb, false, true); |
102 | } else { | |
8addd5e7 | 103 | br_flood(br, skb, BR_PKT_UNICAST, false, true); |
37b090e6 | 104 | } |
c4fcb78c | 105 | out: |
eeaf61d8 | 106 | rcu_read_unlock(); |
6ed10654 | 107 | return NETDEV_TX_OK; |
1da177e4 LT |
108 | } |
109 | ||
845e0ebb CW |
110 | static struct lock_class_key bridge_netdev_addr_lock_key; |
111 | ||
112 | static void br_set_lockdep_class(struct net_device *dev) | |
113 | { | |
114 | lockdep_set_class(&dev->addr_list_lock, &bridge_netdev_addr_lock_key); | |
115 | } | |
116 | ||
bb900b27 | 117 | static int br_dev_init(struct net_device *dev) |
118 | { | |
119 | struct net_bridge *br = netdev_priv(dev); | |
5be5a2df | 120 | int err; |
bb900b27 | 121 | |
1c213bd2 | 122 | br->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
bb900b27 | 123 | if (!br->stats) |
124 | return -ENOMEM; | |
125 | ||
eb793583 NA |
126 | err = br_fdb_hash_init(br); |
127 | if (err) { | |
128 | free_percpu(br->stats); | |
129 | return err; | |
130 | } | |
131 | ||
19e3a9c9 NA |
132 | err = br_mdb_hash_init(br); |
133 | if (err) { | |
134 | free_percpu(br->stats); | |
135 | br_fdb_hash_fini(br); | |
136 | return err; | |
137 | } | |
138 | ||
5be5a2df | 139 | err = br_vlan_init(br); |
1080ab95 | 140 | if (err) { |
5be5a2df | 141 | free_percpu(br->stats); |
19e3a9c9 | 142 | br_mdb_hash_fini(br); |
eb793583 | 143 | br_fdb_hash_fini(br); |
1080ab95 NA |
144 | return err; |
145 | } | |
146 | ||
147 | err = br_multicast_init_stats(br); | |
148 | if (err) { | |
149 | free_percpu(br->stats); | |
150 | br_vlan_flush(br); | |
19e3a9c9 | 151 | br_mdb_hash_fini(br); |
eb793583 | 152 | br_fdb_hash_fini(br); |
1080ab95 | 153 | } |
5be5a2df | 154 | |
845e0ebb | 155 | br_set_lockdep_class(dev); |
5be5a2df | 156 | return err; |
bb900b27 | 157 | } |
158 | ||
b6fe0440 IS |
159 | static void br_dev_uninit(struct net_device *dev) |
160 | { | |
161 | struct net_bridge *br = netdev_priv(dev); | |
162 | ||
b1b9d366 | 163 | br_multicast_dev_del(br); |
b6fe0440 IS |
164 | br_multicast_uninit_stats(br); |
165 | br_vlan_flush(br); | |
19e3a9c9 | 166 | br_mdb_hash_fini(br); |
eb793583 | 167 | br_fdb_hash_fini(br); |
b6fe0440 IS |
168 | free_percpu(br->stats); |
169 | } | |
170 | ||
1da177e4 LT |
171 | static int br_dev_open(struct net_device *dev) |
172 | { | |
81d35307 | 173 | struct net_bridge *br = netdev_priv(dev); |
1da177e4 | 174 | |
c4d27ef9 | 175 | netdev_update_features(dev); |
81d35307 SH |
176 | netif_start_queue(dev); |
177 | br_stp_enable_bridge(br); | |
3fe2d7c7 | 178 | br_multicast_open(br); |
1da177e4 LT |
179 | |
180 | return 0; | |
181 | } | |
182 | ||
183 | static void br_dev_set_multicast_list(struct net_device *dev) | |
184 | { | |
185 | } | |
186 | ||
2796d0c6 VY |
187 | static void br_dev_change_rx_flags(struct net_device *dev, int change) |
188 | { | |
189 | if (change & IFF_PROMISC) | |
190 | br_manage_promisc(netdev_priv(dev)); | |
191 | } | |
192 | ||
1da177e4 LT |
193 | static int br_dev_stop(struct net_device *dev) |
194 | { | |
3fe2d7c7 HX |
195 | struct net_bridge *br = netdev_priv(dev); |
196 | ||
197 | br_stp_disable_bridge(br); | |
198 | br_multicast_stop(br); | |
1da177e4 LT |
199 | |
200 | netif_stop_queue(dev); | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
bc1f4470 | 205 | static void br_get_stats64(struct net_device *dev, |
206 | struct rtnl_link_stats64 *stats) | |
14bb4789 | 207 | { |
208 | struct net_bridge *br = netdev_priv(dev); | |
14bb4789 | 209 | |
7a30ecc9 | 210 | netdev_stats_to_stats64(stats, &dev->stats); |
f3f04f0f | 211 | dev_fetch_sw_netstats(stats, br->stats); |
14bb4789 | 212 | } |
213 | ||
1da177e4 LT |
214 | static int br_change_mtu(struct net_device *dev, int new_mtu) |
215 | { | |
4adf0af6 | 216 | struct net_bridge *br = netdev_priv(dev); |
f40aa233 | 217 | |
1da177e4 | 218 | dev->mtu = new_mtu; |
4adf0af6 | 219 | |
804b854d | 220 | /* this flag will be cleared if the MTU was automatically adjusted */ |
3341d917 | 221 | br_opt_toggle(br, BROPT_MTU_SET_BY_USER, true); |
34666d46 | 222 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
4adf0af6 | 223 | /* remember the MTU in the rtable for PMTU */ |
defb3519 | 224 | dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu); |
4adf0af6 SW |
225 | #endif |
226 | ||
1da177e4 LT |
227 | return 0; |
228 | } | |
229 | ||
ffe1d49c | 230 | /* Allow setting mac address to any valid ethernet address. */ |
4505a3ef SH |
231 | static int br_set_mac_address(struct net_device *dev, void *p) |
232 | { | |
233 | struct net_bridge *br = netdev_priv(dev); | |
234 | struct sockaddr *addr = p; | |
ffe1d49c SH |
235 | |
236 | if (!is_valid_ether_addr(addr->sa_data)) | |
7ca1e11a | 237 | return -EADDRNOTAVAIL; |
4505a3ef | 238 | |
c4b4c421 NA |
239 | /* dev_set_mac_addr() can be called by a master device on bridge's |
240 | * NETDEV_UNREGISTER, but since it's being destroyed do nothing | |
241 | */ | |
242 | if (dev->reg_state != NETREG_REGISTERED) | |
243 | return -EBUSY; | |
244 | ||
4505a3ef | 245 | spin_lock_bh(&br->lock); |
9a7b6ef9 | 246 | if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) { |
a3ebb7ef | 247 | /* Mac address will be changed in br_stp_change_bridge_id(). */ |
43598813 | 248 | br_stp_change_bridge_id(br, addr->sa_data); |
249 | } | |
4505a3ef SH |
250 | spin_unlock_bh(&br->lock); |
251 | ||
ffe1d49c | 252 | return 0; |
4505a3ef SH |
253 | } |
254 | ||
edb5e46f SH |
255 | static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
256 | { | |
7826d43f JP |
257 | strlcpy(info->driver, "bridge", sizeof(info->driver)); |
258 | strlcpy(info->version, BR_VERSION, sizeof(info->version)); | |
259 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
260 | strlcpy(info->bus_info, "N/A", sizeof(info->bus_info)); | |
edb5e46f SH |
261 | } |
262 | ||
542575fe MS |
263 | static int br_get_link_ksettings(struct net_device *dev, |
264 | struct ethtool_link_ksettings *cmd) | |
265 | { | |
266 | struct net_bridge *br = netdev_priv(dev); | |
267 | struct net_bridge_port *p; | |
268 | ||
269 | cmd->base.duplex = DUPLEX_UNKNOWN; | |
270 | cmd->base.port = PORT_OTHER; | |
271 | cmd->base.speed = SPEED_UNKNOWN; | |
272 | ||
273 | list_for_each_entry(p, &br->port_list, list) { | |
274 | struct ethtool_link_ksettings ecmd; | |
275 | struct net_device *pdev = p->dev; | |
276 | ||
277 | if (!netif_running(pdev) || !netif_oper_up(pdev)) | |
278 | continue; | |
279 | ||
280 | if (__ethtool_get_link_ksettings(pdev, &ecmd)) | |
281 | continue; | |
282 | ||
283 | if (ecmd.base.speed == (__u32)SPEED_UNKNOWN) | |
284 | continue; | |
285 | ||
286 | if (cmd->base.speed == (__u32)SPEED_UNKNOWN || | |
287 | cmd->base.speed < ecmd.base.speed) | |
288 | cmd->base.speed = ecmd.base.speed; | |
289 | } | |
290 | ||
291 | return 0; | |
292 | } | |
293 | ||
c8f44aff MM |
294 | static netdev_features_t br_fix_features(struct net_device *dev, |
295 | netdev_features_t features) | |
edb5e46f SH |
296 | { |
297 | struct net_bridge *br = netdev_priv(dev); | |
298 | ||
c4d27ef9 | 299 | return br_features_recompute(br, features); |
361ff8a6 JG |
300 | } |
301 | ||
c06ee961 | 302 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a | 303 | static void br_poll_controller(struct net_device *br_dev) |
c06ee961 | 304 | { |
c06ee961 WC |
305 | } |
306 | ||
91d2c34a | 307 | static void br_netpoll_cleanup(struct net_device *dev) |
c06ee961 | 308 | { |
91d2c34a | 309 | struct net_bridge *br = netdev_priv(dev); |
4e3828c4 | 310 | struct net_bridge_port *p; |
c06ee961 | 311 | |
4e3828c4 | 312 | list_for_each_entry(p, &br->port_list, list) |
91d2c34a | 313 | br_netpoll_disable(p); |
c06ee961 WC |
314 | } |
315 | ||
a8779ec1 | 316 | static int __br_netpoll_enable(struct net_bridge_port *p) |
dbe17307 CW |
317 | { |
318 | struct netpoll *np; | |
319 | int err; | |
320 | ||
a8779ec1 | 321 | np = kzalloc(sizeof(*p->np), GFP_KERNEL); |
dbe17307 CW |
322 | if (!np) |
323 | return -ENOMEM; | |
324 | ||
a8779ec1 | 325 | err = __netpoll_setup(np, p->dev); |
dbe17307 CW |
326 | if (err) { |
327 | kfree(np); | |
328 | return err; | |
329 | } | |
330 | ||
331 | p->np = np; | |
332 | return err; | |
333 | } | |
334 | ||
a8779ec1 | 335 | int br_netpoll_enable(struct net_bridge_port *p) |
dbe17307 CW |
336 | { |
337 | if (!p->br->dev->npinfo) | |
338 | return 0; | |
339 | ||
a8779ec1 | 340 | return __br_netpoll_enable(p); |
dbe17307 CW |
341 | } |
342 | ||
a8779ec1 | 343 | static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni) |
c06ee961 | 344 | { |
cfb478da | 345 | struct net_bridge *br = netdev_priv(dev); |
4e3828c4 | 346 | struct net_bridge_port *p; |
91d2c34a | 347 | int err = 0; |
c06ee961 | 348 | |
4e3828c4 | 349 | list_for_each_entry(p, &br->port_list, list) { |
91d2c34a HX |
350 | if (!p->dev) |
351 | continue; | |
a8779ec1 | 352 | err = __br_netpoll_enable(p); |
91d2c34a HX |
353 | if (err) |
354 | goto fail; | |
c06ee961 | 355 | } |
91d2c34a HX |
356 | |
357 | out: | |
358 | return err; | |
359 | ||
360 | fail: | |
361 | br_netpoll_cleanup(dev); | |
362 | goto out; | |
c06ee961 WC |
363 | } |
364 | ||
91d2c34a | 365 | void br_netpoll_disable(struct net_bridge_port *p) |
c06ee961 | 366 | { |
91d2c34a HX |
367 | struct netpoll *np = p->np; |
368 | ||
369 | if (!np) | |
370 | return; | |
371 | ||
372 | p->np = NULL; | |
373 | ||
c9fbd71f | 374 | __netpoll_free(np); |
c06ee961 WC |
375 | } |
376 | ||
377 | #endif | |
378 | ||
33eaf2a6 DA |
379 | static int br_add_slave(struct net_device *dev, struct net_device *slave_dev, |
380 | struct netlink_ext_ack *extack) | |
afc6151a JP |
381 | |
382 | { | |
383 | struct net_bridge *br = netdev_priv(dev); | |
384 | ||
ca752be0 | 385 | return br_add_if(br, slave_dev, extack); |
afc6151a JP |
386 | } |
387 | ||
388 | static int br_del_slave(struct net_device *dev, struct net_device *slave_dev) | |
389 | { | |
390 | struct net_bridge *br = netdev_priv(dev); | |
391 | ||
392 | return br_del_if(br, slave_dev); | |
393 | } | |
394 | ||
a2dbb882 | 395 | static const struct ethtool_ops br_ethtool_ops = { |
542575fe MS |
396 | .get_drvinfo = br_getinfo, |
397 | .get_link = ethtool_op_get_link, | |
398 | .get_link_ksettings = br_get_link_ksettings, | |
edb5e46f SH |
399 | }; |
400 | ||
a2dbb882 SH |
401 | static const struct net_device_ops br_netdev_ops = { |
402 | .ndo_open = br_dev_open, | |
403 | .ndo_stop = br_dev_stop, | |
bb900b27 | 404 | .ndo_init = br_dev_init, |
b6fe0440 | 405 | .ndo_uninit = br_dev_uninit, |
00829823 | 406 | .ndo_start_xmit = br_dev_xmit, |
406818ff | 407 | .ndo_get_stats64 = br_get_stats64, |
00829823 | 408 | .ndo_set_mac_address = br_set_mac_address, |
afc4b13d | 409 | .ndo_set_rx_mode = br_dev_set_multicast_list, |
2796d0c6 | 410 | .ndo_change_rx_flags = br_dev_change_rx_flags, |
00829823 SH |
411 | .ndo_change_mtu = br_change_mtu, |
412 | .ndo_do_ioctl = br_dev_ioctl, | |
c06ee961 | 413 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a | 414 | .ndo_netpoll_setup = br_netpoll_setup, |
c06ee961 WC |
415 | .ndo_netpoll_cleanup = br_netpoll_cleanup, |
416 | .ndo_poll_controller = br_poll_controller, | |
417 | #endif | |
afc6151a JP |
418 | .ndo_add_slave = br_add_slave, |
419 | .ndo_del_slave = br_del_slave, | |
c4d27ef9 | 420 | .ndo_fix_features = br_fix_features, |
77162022 JF |
421 | .ndo_fdb_add = br_fdb_add, |
422 | .ndo_fdb_del = br_fdb_delete, | |
423 | .ndo_fdb_dump = br_fdb_dump, | |
47674562 | 424 | .ndo_fdb_get = br_fdb_get, |
e5a55a89 JF |
425 | .ndo_bridge_getlink = br_getlink, |
426 | .ndo_bridge_setlink = br_setlink, | |
407af329 | 427 | .ndo_bridge_dellink = br_dellink, |
66780530 | 428 | .ndo_features_check = passthru_features_check, |
a2dbb882 SH |
429 | }; |
430 | ||
bb900b27 | 431 | static struct device_type br_type = { |
432 | .name = "bridge", | |
433 | }; | |
434 | ||
1da177e4 LT |
435 | void br_dev_setup(struct net_device *dev) |
436 | { | |
bb900b27 | 437 | struct net_bridge *br = netdev_priv(dev); |
438 | ||
7ce5d222 | 439 | eth_hw_addr_random(dev); |
1da177e4 LT |
440 | ether_setup(dev); |
441 | ||
a2dbb882 | 442 | dev->netdev_ops = &br_netdev_ops; |
cf124db5 | 443 | dev->needs_free_netdev = true; |
7ad24ea4 | 444 | dev->ethtool_ops = &br_ethtool_ops; |
bb900b27 | 445 | SET_NETDEV_DEVTYPE(dev, &br_type); |
ccecb2a4 | 446 | dev->priv_flags = IFF_EBRIDGE | IFF_NO_QUEUE; |
edb5e46f | 447 | |
161f65ba | 448 | dev->features = COMMON_FEATURES | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL | |
1c5abb6c TM |
449 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; |
450 | dev->hw_features = COMMON_FEATURES | NETIF_F_HW_VLAN_CTAG_TX | | |
451 | NETIF_F_HW_VLAN_STAG_TX; | |
161f65ba | 452 | dev->vlan_features = COMMON_FEATURES; |
bb900b27 | 453 | |
454 | br->dev = dev; | |
455 | spin_lock_init(&br->lock); | |
456 | INIT_LIST_HEAD(&br->port_list); | |
eb793583 | 457 | INIT_HLIST_HEAD(&br->fdb_list); |
65369933 HV |
458 | #if IS_ENABLED(CONFIG_BRIDGE_MRP) |
459 | INIT_LIST_HEAD(&br->mrp_list); | |
460 | #endif | |
bb900b27 | 461 | spin_lock_init(&br->hash_lock); |
462 | ||
463 | br->bridge_id.prio[0] = 0x80; | |
464 | br->bridge_id.prio[1] = 0x00; | |
465 | ||
05428729 | 466 | ether_addr_copy(br->group_addr, eth_stp_addr); |
bb900b27 | 467 | |
bb900b27 | 468 | br->stp_enabled = BR_NO_STP; |
515853cc | 469 | br->group_fwd_mask = BR_GROUPFWD_DEFAULT; |
f2808d22 | 470 | br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; |
515853cc | 471 | |
bb900b27 | 472 | br->designated_root = br->bridge_id; |
473 | br->bridge_max_age = br->max_age = 20 * HZ; | |
474 | br->bridge_hello_time = br->hello_time = 2 * HZ; | |
475 | br->bridge_forward_delay = br->forward_delay = 15 * HZ; | |
34d8acd8 | 476 | br->bridge_ageing_time = br->ageing_time = BR_DEFAULT_AGEING_TIME; |
91572088 | 477 | dev->max_mtu = ETH_MAX_MTU; |
bb900b27 | 478 | |
479 | br_netfilter_rtable_init(br); | |
480 | br_stp_timer_init(br); | |
481 | br_multicast_init(br); | |
f7cdee8a | 482 | INIT_DELAYED_WORK(&br->gc_work, br_fdb_cleanup); |
1da177e4 | 483 | } |