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; |
1a4ba64d | 33 | const struct nf_br_ops *nf_ops; |
a580c76d | 34 | u8 state = BR_STATE_FORWARDING; |
31a4562d | 35 | const unsigned char *dest; |
78851988 | 36 | u16 vid = 0; |
1da177e4 | 37 | |
fd65e5a9 NA |
38 | memset(skb->cb, 0, sizeof(struct br_input_skb_cb)); |
39 | ||
c03307ea | 40 | rcu_read_lock(); |
1a4ba64d PNA |
41 | nf_ops = rcu_dereference(nf_br_ops); |
42 | if (nf_ops && nf_ops->br_dev_xmit_hook(skb)) { | |
c03307ea | 43 | rcu_read_unlock(); |
ea2d9b41 BDS |
44 | return NETDEV_TX_OK; |
45 | } | |
ea2d9b41 | 46 | |
7609ecb2 | 47 | dev_sw_netstats_tx_add(dev, 1, skb->len); |
6088a539 | 48 | |
f1c2eddf | 49 | br_switchdev_frame_unmark(skb); |
14bb4789 | 50 | BR_INPUT_SKB_CB(skb)->brdev = dev; |
3c171f49 | 51 | BR_INPUT_SKB_CB(skb)->frag_max_size = 0; |
1da177e4 | 52 | |
459a98ed | 53 | skb_reset_mac_header(skb); |
1da177e4 LT |
54 | skb_pull(skb, ETH_HLEN); |
55 | ||
a580c76d | 56 | if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid, &state)) |
12464bb8 TM |
57 | goto out; |
58 | ||
057658cb | 59 | if (IS_ENABLED(CONFIG_INET) && |
823d81b0 NA |
60 | (eth_hdr(skb)->h_proto == htons(ETH_P_ARP) || |
61 | eth_hdr(skb)->h_proto == htons(ETH_P_RARP)) && | |
c69c2cd4 | 62 | br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED)) { |
057658cb | 63 | br_do_proxy_suppress_arp(skb, br, vid, NULL); |
ed842fae RP |
64 | } else if (IS_ENABLED(CONFIG_IPV6) && |
65 | skb->protocol == htons(ETH_P_IPV6) && | |
c69c2cd4 | 66 | br_opt_get(br, BROPT_NEIGH_SUPPRESS_ENABLED) && |
ed842fae RP |
67 | pskb_may_pull(skb, sizeof(struct ipv6hdr) + |
68 | sizeof(struct nd_msg)) && | |
69 | ipv6_hdr(skb)->nexthdr == IPPROTO_ICMPV6) { | |
70 | struct nd_msg *msg, _msg; | |
71 | ||
72 | msg = br_is_nd_neigh_msg(skb, &_msg); | |
73 | if (msg) | |
74 | br_do_suppress_nd(skb, br, vid, NULL, msg); | |
057658cb RP |
75 | } |
76 | ||
31a4562d | 77 | dest = eth_hdr(skb)->h_dest; |
37b090e6 | 78 | if (is_broadcast_ether_addr(dest)) { |
8addd5e7 | 79 | br_flood(br, skb, BR_PKT_BROADCAST, false, true); |
37b090e6 | 80 | } else if (is_multicast_ether_addr(dest)) { |
91d2c34a | 81 | if (unlikely(netpoll_tx_running(dev))) { |
8addd5e7 | 82 | br_flood(br, skb, BR_PKT_MULTICAST, false, true); |
91d2c34a HX |
83 | goto out; |
84 | } | |
06499098 | 85 | if (br_multicast_rcv(br, NULL, skb, vid)) { |
6d1d1d39 | 86 | kfree_skb(skb); |
c4fcb78c | 87 | goto out; |
6d1d1d39 | 88 | } |
c4fcb78c | 89 | |
fbca58a2 | 90 | mdst = br_mdb_get(br, skb, vid); |
b00589af | 91 | if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) && |
955062b0 | 92 | br_multicast_querier_exists(br, eth_hdr(skb), mdst)) |
37b090e6 | 93 | br_multicast_flood(mdst, skb, false, true); |
c4fcb78c | 94 | else |
8addd5e7 | 95 | br_flood(br, skb, BR_PKT_MULTICAST, false, true); |
bfd0aeac | 96 | } else if ((dst = br_fdb_find_rcu(br, dest, vid)) != NULL) { |
37b090e6 NA |
97 | br_forward(dst->dst, skb, false, true); |
98 | } else { | |
8addd5e7 | 99 | br_flood(br, skb, BR_PKT_UNICAST, false, true); |
37b090e6 | 100 | } |
c4fcb78c | 101 | out: |
eeaf61d8 | 102 | rcu_read_unlock(); |
6ed10654 | 103 | return NETDEV_TX_OK; |
1da177e4 LT |
104 | } |
105 | ||
845e0ebb CW |
106 | static struct lock_class_key bridge_netdev_addr_lock_key; |
107 | ||
108 | static void br_set_lockdep_class(struct net_device *dev) | |
109 | { | |
110 | lockdep_set_class(&dev->addr_list_lock, &bridge_netdev_addr_lock_key); | |
111 | } | |
112 | ||
bb900b27 | 113 | static int br_dev_init(struct net_device *dev) |
114 | { | |
115 | struct net_bridge *br = netdev_priv(dev); | |
5be5a2df | 116 | int err; |
bb900b27 | 117 | |
7609ecb2 HK |
118 | dev->tstats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats); |
119 | if (!dev->tstats) | |
bb900b27 | 120 | return -ENOMEM; |
121 | ||
eb793583 NA |
122 | err = br_fdb_hash_init(br); |
123 | if (err) { | |
7609ecb2 | 124 | free_percpu(dev->tstats); |
eb793583 NA |
125 | return err; |
126 | } | |
127 | ||
19e3a9c9 NA |
128 | err = br_mdb_hash_init(br); |
129 | if (err) { | |
7609ecb2 | 130 | free_percpu(dev->tstats); |
19e3a9c9 NA |
131 | br_fdb_hash_fini(br); |
132 | return err; | |
133 | } | |
134 | ||
5be5a2df | 135 | err = br_vlan_init(br); |
1080ab95 | 136 | if (err) { |
7609ecb2 | 137 | free_percpu(dev->tstats); |
19e3a9c9 | 138 | br_mdb_hash_fini(br); |
eb793583 | 139 | br_fdb_hash_fini(br); |
1080ab95 NA |
140 | return err; |
141 | } | |
142 | ||
143 | err = br_multicast_init_stats(br); | |
144 | if (err) { | |
7609ecb2 | 145 | free_percpu(dev->tstats); |
1080ab95 | 146 | br_vlan_flush(br); |
19e3a9c9 | 147 | br_mdb_hash_fini(br); |
eb793583 | 148 | br_fdb_hash_fini(br); |
1080ab95 | 149 | } |
5be5a2df | 150 | |
845e0ebb | 151 | br_set_lockdep_class(dev); |
5be5a2df | 152 | return err; |
bb900b27 | 153 | } |
154 | ||
b6fe0440 IS |
155 | static void br_dev_uninit(struct net_device *dev) |
156 | { | |
157 | struct net_bridge *br = netdev_priv(dev); | |
158 | ||
b1b9d366 | 159 | br_multicast_dev_del(br); |
b6fe0440 IS |
160 | br_multicast_uninit_stats(br); |
161 | br_vlan_flush(br); | |
19e3a9c9 | 162 | br_mdb_hash_fini(br); |
eb793583 | 163 | br_fdb_hash_fini(br); |
7609ecb2 | 164 | free_percpu(dev->tstats); |
b6fe0440 IS |
165 | } |
166 | ||
1da177e4 LT |
167 | static int br_dev_open(struct net_device *dev) |
168 | { | |
81d35307 | 169 | struct net_bridge *br = netdev_priv(dev); |
1da177e4 | 170 | |
c4d27ef9 | 171 | netdev_update_features(dev); |
81d35307 SH |
172 | netif_start_queue(dev); |
173 | br_stp_enable_bridge(br); | |
3fe2d7c7 | 174 | br_multicast_open(br); |
1da177e4 | 175 | |
851d0a73 JH |
176 | if (br_opt_get(br, BROPT_MULTICAST_ENABLED)) |
177 | br_multicast_join_snoopers(br); | |
178 | ||
1da177e4 LT |
179 | return 0; |
180 | } | |
181 | ||
182 | static void br_dev_set_multicast_list(struct net_device *dev) | |
183 | { | |
184 | } | |
185 | ||
2796d0c6 VY |
186 | static void br_dev_change_rx_flags(struct net_device *dev, int change) |
187 | { | |
188 | if (change & IFF_PROMISC) | |
189 | br_manage_promisc(netdev_priv(dev)); | |
190 | } | |
191 | ||
1da177e4 LT |
192 | static int br_dev_stop(struct net_device *dev) |
193 | { | |
3fe2d7c7 HX |
194 | struct net_bridge *br = netdev_priv(dev); |
195 | ||
196 | br_stp_disable_bridge(br); | |
197 | br_multicast_stop(br); | |
1da177e4 | 198 | |
851d0a73 JH |
199 | if (br_opt_get(br, BROPT_MULTICAST_ENABLED)) |
200 | br_multicast_leave_snoopers(br); | |
201 | ||
1da177e4 LT |
202 | netif_stop_queue(dev); |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | static int br_change_mtu(struct net_device *dev, int new_mtu) | |
208 | { | |
4adf0af6 | 209 | struct net_bridge *br = netdev_priv(dev); |
f40aa233 | 210 | |
1da177e4 | 211 | dev->mtu = new_mtu; |
4adf0af6 | 212 | |
804b854d | 213 | /* this flag will be cleared if the MTU was automatically adjusted */ |
3341d917 | 214 | br_opt_toggle(br, BROPT_MTU_SET_BY_USER, true); |
34666d46 | 215 | #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER) |
4adf0af6 | 216 | /* remember the MTU in the rtable for PMTU */ |
defb3519 | 217 | dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu); |
4adf0af6 SW |
218 | #endif |
219 | ||
1da177e4 LT |
220 | return 0; |
221 | } | |
222 | ||
ffe1d49c | 223 | /* Allow setting mac address to any valid ethernet address. */ |
4505a3ef SH |
224 | static int br_set_mac_address(struct net_device *dev, void *p) |
225 | { | |
226 | struct net_bridge *br = netdev_priv(dev); | |
227 | struct sockaddr *addr = p; | |
ffe1d49c SH |
228 | |
229 | if (!is_valid_ether_addr(addr->sa_data)) | |
7ca1e11a | 230 | return -EADDRNOTAVAIL; |
4505a3ef | 231 | |
c4b4c421 NA |
232 | /* dev_set_mac_addr() can be called by a master device on bridge's |
233 | * NETDEV_UNREGISTER, but since it's being destroyed do nothing | |
234 | */ | |
235 | if (dev->reg_state != NETREG_REGISTERED) | |
236 | return -EBUSY; | |
237 | ||
4505a3ef | 238 | spin_lock_bh(&br->lock); |
9a7b6ef9 | 239 | if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) { |
a3ebb7ef | 240 | /* Mac address will be changed in br_stp_change_bridge_id(). */ |
43598813 | 241 | br_stp_change_bridge_id(br, addr->sa_data); |
242 | } | |
4505a3ef SH |
243 | spin_unlock_bh(&br->lock); |
244 | ||
ffe1d49c | 245 | return 0; |
4505a3ef SH |
246 | } |
247 | ||
edb5e46f SH |
248 | static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
249 | { | |
7826d43f JP |
250 | strlcpy(info->driver, "bridge", sizeof(info->driver)); |
251 | strlcpy(info->version, BR_VERSION, sizeof(info->version)); | |
252 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); | |
253 | strlcpy(info->bus_info, "N/A", sizeof(info->bus_info)); | |
edb5e46f SH |
254 | } |
255 | ||
542575fe MS |
256 | static int br_get_link_ksettings(struct net_device *dev, |
257 | struct ethtool_link_ksettings *cmd) | |
258 | { | |
259 | struct net_bridge *br = netdev_priv(dev); | |
260 | struct net_bridge_port *p; | |
261 | ||
262 | cmd->base.duplex = DUPLEX_UNKNOWN; | |
263 | cmd->base.port = PORT_OTHER; | |
264 | cmd->base.speed = SPEED_UNKNOWN; | |
265 | ||
266 | list_for_each_entry(p, &br->port_list, list) { | |
267 | struct ethtool_link_ksettings ecmd; | |
268 | struct net_device *pdev = p->dev; | |
269 | ||
270 | if (!netif_running(pdev) || !netif_oper_up(pdev)) | |
271 | continue; | |
272 | ||
273 | if (__ethtool_get_link_ksettings(pdev, &ecmd)) | |
274 | continue; | |
275 | ||
276 | if (ecmd.base.speed == (__u32)SPEED_UNKNOWN) | |
277 | continue; | |
278 | ||
279 | if (cmd->base.speed == (__u32)SPEED_UNKNOWN || | |
280 | cmd->base.speed < ecmd.base.speed) | |
281 | cmd->base.speed = ecmd.base.speed; | |
282 | } | |
283 | ||
284 | return 0; | |
285 | } | |
286 | ||
c8f44aff MM |
287 | static netdev_features_t br_fix_features(struct net_device *dev, |
288 | netdev_features_t features) | |
edb5e46f SH |
289 | { |
290 | struct net_bridge *br = netdev_priv(dev); | |
291 | ||
c4d27ef9 | 292 | return br_features_recompute(br, features); |
361ff8a6 JG |
293 | } |
294 | ||
c06ee961 | 295 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a | 296 | static void br_poll_controller(struct net_device *br_dev) |
c06ee961 | 297 | { |
c06ee961 WC |
298 | } |
299 | ||
91d2c34a | 300 | static void br_netpoll_cleanup(struct net_device *dev) |
c06ee961 | 301 | { |
91d2c34a | 302 | struct net_bridge *br = netdev_priv(dev); |
4e3828c4 | 303 | struct net_bridge_port *p; |
c06ee961 | 304 | |
4e3828c4 | 305 | list_for_each_entry(p, &br->port_list, list) |
91d2c34a | 306 | br_netpoll_disable(p); |
c06ee961 WC |
307 | } |
308 | ||
a8779ec1 | 309 | static int __br_netpoll_enable(struct net_bridge_port *p) |
dbe17307 CW |
310 | { |
311 | struct netpoll *np; | |
312 | int err; | |
313 | ||
a8779ec1 | 314 | np = kzalloc(sizeof(*p->np), GFP_KERNEL); |
dbe17307 CW |
315 | if (!np) |
316 | return -ENOMEM; | |
317 | ||
a8779ec1 | 318 | err = __netpoll_setup(np, p->dev); |
dbe17307 CW |
319 | if (err) { |
320 | kfree(np); | |
321 | return err; | |
322 | } | |
323 | ||
324 | p->np = np; | |
325 | return err; | |
326 | } | |
327 | ||
a8779ec1 | 328 | int br_netpoll_enable(struct net_bridge_port *p) |
dbe17307 CW |
329 | { |
330 | if (!p->br->dev->npinfo) | |
331 | return 0; | |
332 | ||
a8779ec1 | 333 | return __br_netpoll_enable(p); |
dbe17307 CW |
334 | } |
335 | ||
a8779ec1 | 336 | static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni) |
c06ee961 | 337 | { |
cfb478da | 338 | struct net_bridge *br = netdev_priv(dev); |
4e3828c4 | 339 | struct net_bridge_port *p; |
91d2c34a | 340 | int err = 0; |
c06ee961 | 341 | |
4e3828c4 | 342 | list_for_each_entry(p, &br->port_list, list) { |
91d2c34a HX |
343 | if (!p->dev) |
344 | continue; | |
a8779ec1 | 345 | err = __br_netpoll_enable(p); |
91d2c34a HX |
346 | if (err) |
347 | goto fail; | |
c06ee961 | 348 | } |
91d2c34a HX |
349 | |
350 | out: | |
351 | return err; | |
352 | ||
353 | fail: | |
354 | br_netpoll_cleanup(dev); | |
355 | goto out; | |
c06ee961 WC |
356 | } |
357 | ||
91d2c34a | 358 | void br_netpoll_disable(struct net_bridge_port *p) |
c06ee961 | 359 | { |
91d2c34a HX |
360 | struct netpoll *np = p->np; |
361 | ||
362 | if (!np) | |
363 | return; | |
364 | ||
365 | p->np = NULL; | |
366 | ||
c9fbd71f | 367 | __netpoll_free(np); |
c06ee961 WC |
368 | } |
369 | ||
370 | #endif | |
371 | ||
33eaf2a6 DA |
372 | static int br_add_slave(struct net_device *dev, struct net_device *slave_dev, |
373 | struct netlink_ext_ack *extack) | |
afc6151a JP |
374 | |
375 | { | |
376 | struct net_bridge *br = netdev_priv(dev); | |
377 | ||
ca752be0 | 378 | return br_add_if(br, slave_dev, extack); |
afc6151a JP |
379 | } |
380 | ||
381 | static int br_del_slave(struct net_device *dev, struct net_device *slave_dev) | |
382 | { | |
383 | struct net_bridge *br = netdev_priv(dev); | |
384 | ||
385 | return br_del_if(br, slave_dev); | |
386 | } | |
387 | ||
ec9d16ba PNA |
388 | static int br_fill_forward_path(struct net_device_path_ctx *ctx, |
389 | struct net_device_path *path) | |
390 | { | |
391 | struct net_bridge_fdb_entry *f; | |
392 | struct net_bridge_port *dst; | |
393 | struct net_bridge *br; | |
394 | ||
395 | if (netif_is_bridge_port(ctx->dev)) | |
396 | return -1; | |
397 | ||
398 | br = netdev_priv(ctx->dev); | |
bcf2766b FF |
399 | |
400 | br_vlan_fill_forward_path_pvid(br, ctx, path); | |
401 | ||
402 | f = br_fdb_find_rcu(br, ctx->daddr, path->bridge.vlan_id); | |
ec9d16ba PNA |
403 | if (!f || !f->dst) |
404 | return -1; | |
405 | ||
406 | dst = READ_ONCE(f->dst); | |
407 | if (!dst) | |
408 | return -1; | |
409 | ||
bcf2766b FF |
410 | if (br_vlan_fill_forward_path_mode(br, dst, path)) |
411 | return -1; | |
412 | ||
ec9d16ba PNA |
413 | path->type = DEV_PATH_BRIDGE; |
414 | path->dev = dst->br->dev; | |
415 | ctx->dev = dst->dev; | |
416 | ||
bcf2766b FF |
417 | switch (path->bridge.vlan_mode) { |
418 | case DEV_PATH_BR_VLAN_TAG: | |
419 | if (ctx->num_vlans >= ARRAY_SIZE(ctx->vlan)) | |
420 | return -ENOSPC; | |
421 | ctx->vlan[ctx->num_vlans].id = path->bridge.vlan_id; | |
422 | ctx->vlan[ctx->num_vlans].proto = path->bridge.vlan_proto; | |
423 | ctx->num_vlans++; | |
424 | break; | |
425 | case DEV_PATH_BR_VLAN_UNTAG: | |
426 | ctx->num_vlans--; | |
427 | break; | |
428 | case DEV_PATH_BR_VLAN_KEEP: | |
429 | break; | |
430 | } | |
431 | ||
ec9d16ba PNA |
432 | return 0; |
433 | } | |
434 | ||
a2dbb882 | 435 | static const struct ethtool_ops br_ethtool_ops = { |
542575fe MS |
436 | .get_drvinfo = br_getinfo, |
437 | .get_link = ethtool_op_get_link, | |
438 | .get_link_ksettings = br_get_link_ksettings, | |
edb5e46f SH |
439 | }; |
440 | ||
a2dbb882 SH |
441 | static const struct net_device_ops br_netdev_ops = { |
442 | .ndo_open = br_dev_open, | |
443 | .ndo_stop = br_dev_stop, | |
bb900b27 | 444 | .ndo_init = br_dev_init, |
b6fe0440 | 445 | .ndo_uninit = br_dev_uninit, |
00829823 | 446 | .ndo_start_xmit = br_dev_xmit, |
7609ecb2 | 447 | .ndo_get_stats64 = dev_get_tstats64, |
00829823 | 448 | .ndo_set_mac_address = br_set_mac_address, |
afc4b13d | 449 | .ndo_set_rx_mode = br_dev_set_multicast_list, |
2796d0c6 | 450 | .ndo_change_rx_flags = br_dev_change_rx_flags, |
00829823 SH |
451 | .ndo_change_mtu = br_change_mtu, |
452 | .ndo_do_ioctl = br_dev_ioctl, | |
c06ee961 | 453 | #ifdef CONFIG_NET_POLL_CONTROLLER |
91d2c34a | 454 | .ndo_netpoll_setup = br_netpoll_setup, |
c06ee961 WC |
455 | .ndo_netpoll_cleanup = br_netpoll_cleanup, |
456 | .ndo_poll_controller = br_poll_controller, | |
457 | #endif | |
afc6151a JP |
458 | .ndo_add_slave = br_add_slave, |
459 | .ndo_del_slave = br_del_slave, | |
c4d27ef9 | 460 | .ndo_fix_features = br_fix_features, |
77162022 JF |
461 | .ndo_fdb_add = br_fdb_add, |
462 | .ndo_fdb_del = br_fdb_delete, | |
463 | .ndo_fdb_dump = br_fdb_dump, | |
47674562 | 464 | .ndo_fdb_get = br_fdb_get, |
e5a55a89 JF |
465 | .ndo_bridge_getlink = br_getlink, |
466 | .ndo_bridge_setlink = br_setlink, | |
407af329 | 467 | .ndo_bridge_dellink = br_dellink, |
66780530 | 468 | .ndo_features_check = passthru_features_check, |
ec9d16ba | 469 | .ndo_fill_forward_path = br_fill_forward_path, |
a2dbb882 SH |
470 | }; |
471 | ||
bb900b27 | 472 | static struct device_type br_type = { |
473 | .name = "bridge", | |
474 | }; | |
475 | ||
1da177e4 LT |
476 | void br_dev_setup(struct net_device *dev) |
477 | { | |
bb900b27 | 478 | struct net_bridge *br = netdev_priv(dev); |
479 | ||
7ce5d222 | 480 | eth_hw_addr_random(dev); |
1da177e4 LT |
481 | ether_setup(dev); |
482 | ||
a2dbb882 | 483 | dev->netdev_ops = &br_netdev_ops; |
cf124db5 | 484 | dev->needs_free_netdev = true; |
7ad24ea4 | 485 | dev->ethtool_ops = &br_ethtool_ops; |
bb900b27 | 486 | SET_NETDEV_DEVTYPE(dev, &br_type); |
ccecb2a4 | 487 | dev->priv_flags = IFF_EBRIDGE | IFF_NO_QUEUE; |
edb5e46f | 488 | |
161f65ba | 489 | dev->features = COMMON_FEATURES | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL | |
1c5abb6c TM |
490 | NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX; |
491 | dev->hw_features = COMMON_FEATURES | NETIF_F_HW_VLAN_CTAG_TX | | |
492 | NETIF_F_HW_VLAN_STAG_TX; | |
161f65ba | 493 | dev->vlan_features = COMMON_FEATURES; |
bb900b27 | 494 | |
495 | br->dev = dev; | |
496 | spin_lock_init(&br->lock); | |
497 | INIT_LIST_HEAD(&br->port_list); | |
eb793583 | 498 | INIT_HLIST_HEAD(&br->fdb_list); |
90c628dd | 499 | INIT_HLIST_HEAD(&br->frame_type_list); |
65369933 | 500 | #if IS_ENABLED(CONFIG_BRIDGE_MRP) |
0169b820 | 501 | INIT_HLIST_HEAD(&br->mrp_list); |
f323aa54 HB |
502 | #endif |
503 | #if IS_ENABLED(CONFIG_BRIDGE_CFM) | |
504 | INIT_HLIST_HEAD(&br->mep_list); | |
65369933 | 505 | #endif |
bb900b27 | 506 | spin_lock_init(&br->hash_lock); |
507 | ||
508 | br->bridge_id.prio[0] = 0x80; | |
509 | br->bridge_id.prio[1] = 0x00; | |
510 | ||
05428729 | 511 | ether_addr_copy(br->group_addr, eth_stp_addr); |
bb900b27 | 512 | |
bb900b27 | 513 | br->stp_enabled = BR_NO_STP; |
515853cc | 514 | br->group_fwd_mask = BR_GROUPFWD_DEFAULT; |
f2808d22 | 515 | br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT; |
515853cc | 516 | |
bb900b27 | 517 | br->designated_root = br->bridge_id; |
518 | br->bridge_max_age = br->max_age = 20 * HZ; | |
519 | br->bridge_hello_time = br->hello_time = 2 * HZ; | |
520 | br->bridge_forward_delay = br->forward_delay = 15 * HZ; | |
34d8acd8 | 521 | br->bridge_ageing_time = br->ageing_time = BR_DEFAULT_AGEING_TIME; |
91572088 | 522 | dev->max_mtu = ETH_MAX_MTU; |
bb900b27 | 523 | |
524 | br_netfilter_rtable_init(br); | |
525 | br_stp_timer_init(br); | |
526 | br_multicast_init(br); | |
f7cdee8a | 527 | INIT_DELAYED_WORK(&br->gc_work, br_fdb_cleanup); |
1da177e4 | 528 | } |