blob: 04eea2f4b80f2cbad170d4d636976d87fb419f09 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Device handling code
3 * Linux ethernet bridge
4 *
5 * Authors:
6 * Lennert Buytenhek <buytenh@gnu.org>
7 *
Linus Torvalds1da177e2005-04-16 15:20:36 -07008 * 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
14#include <linux/kernel.h>
15#include <linux/netdevice.h>
WANG Congc06ee962010-05-06 00:48:24 -070016#include <linux/netpoll.h>
Stephen Hemminger4505a3e2005-12-21 18:51:49 -080017#include <linux/etherdevice.h>
Stephen Hemmingeredb5e462005-12-21 19:00:58 -080018#include <linux/ethtool.h>
WANG Congc06ee962010-05-06 00:48:24 -070019#include <linux/list.h>
Bart De Schuymerea2d9b42010-04-15 12:14:51 +020020#include <linux/netfilter_bridge.h>
Stephen Hemminger4505a3e2005-12-21 18:51:49 -080021
Linus Torvalds1da177e2005-04-16 15:20:36 -070022#include <asm/uaccess.h>
23#include "br_private.h"
24
Vlad Yasevich161f65b2013-05-22 07:49:34 +000025#define COMMON_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA | \
26 NETIF_F_GSO_MASK | NETIF_F_HW_CSUM)
27
Pablo Neira Ayuso1a4ba642015-03-10 10:27:18 +010028const struct nf_br_ops __rcu *nf_br_ops __read_mostly;
29EXPORT_SYMBOL_GPL(nf_br_ops);
30
Nikolay Aleksandrovc6894de2016-01-15 19:03:54 +010031static struct lock_class_key bridge_netdev_addr_lock_key;
32
stephen hemmingereeaf61d2010-07-27 08:26:30 +000033/* net device transmit always called with BH disabled */
Stephen Hemminger6fef4c02009-08-31 19:50:41 +000034netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev)
Linus Torvalds1da177e2005-04-16 15:20:36 -070035{
36 struct net_bridge *br = netdev_priv(dev);
37 const unsigned char *dest = skb->data;
38 struct net_bridge_fdb_entry *dst;
Herbert Xuc4fcb782010-02-27 19:41:48 +000039 struct net_bridge_mdb_entry *mdst;
Li RongQing8f849852014-01-04 13:57:59 +080040 struct pcpu_sw_netstats *brstats = this_cpu_ptr(br->stats);
Pablo Neira Ayuso1a4ba642015-03-10 10:27:18 +010041 const struct nf_br_ops *nf_ops;
Vlad Yasevich78851982013-02-13 12:00:14 +000042 u16 vid = 0;
stephen hemminger14bb4782010-03-02 13:32:09 +000043
Stephen Hemmingerc03307e2012-08-14 08:19:33 -070044 rcu_read_lock();
Pablo Neira Ayuso1a4ba642015-03-10 10:27:18 +010045 nf_ops = rcu_dereference(nf_br_ops);
46 if (nf_ops && nf_ops->br_dev_xmit_hook(skb)) {
Stephen Hemmingerc03307e2012-08-14 08:19:33 -070047 rcu_read_unlock();
Bart De Schuymerea2d9b42010-04-15 12:14:51 +020048 return NETDEV_TX_OK;
49 }
Bart De Schuymerea2d9b42010-04-15 12:14:51 +020050
Ido Schimmelb5a3ae82017-09-01 12:22:25 +030051#ifdef CONFIG_NET_SWITCHDEV
52 skb->offload_fwd_mark = 0;
53#endif
Herbert Xu6088a532010-02-27 19:41:42 +000054 BR_INPUT_SKB_CB(skb)->brdev = dev;
55
Arnaldo Carvalho de Melo459a98e2007-03-19 15:30:44 -070056 skb_reset_mac_header(skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -070057 skb_pull(skb, ETH_HLEN);
58
Ashish Sharmad4577812011-10-07 17:54:16 -070059 u64_stats_update_begin(&brstats->syncp);
60 brstats->tx_packets++;
61 /* Exclude ETH_HLEN from byte stats for consistency with Rx chain */
62 brstats->tx_bytes += skb->len;
63 u64_stats_update_end(&brstats->syncp);
64
Nikolay Aleksandrov907b1e62015-10-12 21:47:02 +020065 if (!br_allowed_ingress(br, br_vlan_group_rcu(br), skb, &vid))
Toshiaki Makita12464bb2014-03-27 21:46:55 +090066 goto out;
67
Nikolay Aleksandrov37b090e2016-07-14 06:10:02 +030068 if (is_broadcast_ether_addr(dest)) {
Nikolay Aleksandrov8addd5e2016-08-31 15:36:51 +020069 br_flood(br, skb, BR_PKT_BROADCAST, false, true);
Nikolay Aleksandrov37b090e2016-07-14 06:10:02 +030070 } else if (is_multicast_ether_addr(dest)) {
Herbert Xu91d2c342010-06-10 16:12:50 +000071 if (unlikely(netpoll_tx_running(dev))) {
Nikolay Aleksandrov8addd5e2016-08-31 15:36:51 +020072 br_flood(br, skb, BR_PKT_MULTICAST, false, true);
Herbert Xu91d2c342010-06-10 16:12:50 +000073 goto out;
74 }
Vlad Yasevich06499092013-10-28 15:45:07 -040075 if (br_multicast_rcv(br, NULL, skb, vid)) {
Herbert Xu6d1d1d32010-07-29 01:12:31 +000076 kfree_skb(skb);
Herbert Xuc4fcb782010-02-27 19:41:48 +000077 goto out;
Herbert Xu6d1d1d32010-07-29 01:12:31 +000078 }
Herbert Xuc4fcb782010-02-27 19:41:48 +000079
Cong Wangfbca58a2013-03-07 03:05:33 +000080 mdst = br_mdb_get(br, skb, vid);
Linus Lüssingb00589a2013-08-01 01:06:20 +020081 if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) &&
Linus Lüssingcc0fdd82013-08-30 17:28:17 +020082 br_multicast_querier_exists(br, eth_hdr(skb)))
Nikolay Aleksandrov37b090e2016-07-14 06:10:02 +030083 br_multicast_flood(mdst, skb, false, true);
Herbert Xuc4fcb782010-02-27 19:41:48 +000084 else
Nikolay Aleksandrov8addd5e2016-08-31 15:36:51 +020085 br_flood(br, skb, BR_PKT_MULTICAST, false, true);
Nikolay Aleksandrov37b090e2016-07-14 06:10:02 +030086 } else if ((dst = __br_fdb_get(br, dest, vid)) != NULL) {
87 br_forward(dst->dst, skb, false, true);
88 } else {
Nikolay Aleksandrov8addd5e2016-08-31 15:36:51 +020089 br_flood(br, skb, BR_PKT_UNICAST, false, true);
Nikolay Aleksandrov37b090e2016-07-14 06:10:02 +030090 }
Herbert Xuc4fcb782010-02-27 19:41:48 +000091out:
stephen hemmingereeaf61d2010-07-27 08:26:30 +000092 rcu_read_unlock();
Patrick McHardy6ed10652009-06-23 06:03:08 +000093 return NETDEV_TX_OK;
Linus Torvalds1da177e2005-04-16 15:20:36 -070094}
95
Nikolay Aleksandrovc6894de2016-01-15 19:03:54 +010096static void br_set_lockdep_class(struct net_device *dev)
97{
98 lockdep_set_class(&dev->addr_list_lock, &bridge_netdev_addr_lock_key);
99}
100
stephen hemmingerbb900b22011-04-04 14:03:32 +0000101static int br_dev_init(struct net_device *dev)
102{
103 struct net_bridge *br = netdev_priv(dev);
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400104 int err;
stephen hemmingerbb900b22011-04-04 14:03:32 +0000105
WANG Cong1c213bd2014-02-13 11:46:28 -0800106 br->stats = netdev_alloc_pcpu_stats(struct pcpu_sw_netstats);
stephen hemmingerbb900b22011-04-04 14:03:32 +0000107 if (!br->stats)
108 return -ENOMEM;
109
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400110 err = br_vlan_init(br);
Nikolay Aleksandrov1080ab92016-06-28 16:57:06 +0200111 if (err) {
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400112 free_percpu(br->stats);
Nikolay Aleksandrov1080ab92016-06-28 16:57:06 +0200113 return err;
114 }
115
116 err = br_multicast_init_stats(br);
117 if (err) {
118 free_percpu(br->stats);
119 br_vlan_flush(br);
120 }
Nikolay Aleksandrovc6894de2016-01-15 19:03:54 +0100121 br_set_lockdep_class(dev);
Vlad Yasevich5be5a2d2014-10-03 11:29:18 -0400122
123 return err;
stephen hemmingerbb900b22011-04-04 14:03:32 +0000124}
125
Linus Torvalds1da177e2005-04-16 15:20:36 -0700126static int br_dev_open(struct net_device *dev)
127{
Stephen Hemminger81d35302005-05-29 14:15:17 -0700128 struct net_bridge *br = netdev_priv(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700129
Michał Mirosławc4d27ef2011-04-22 06:31:16 +0000130 netdev_update_features(dev);
Stephen Hemminger81d35302005-05-29 14:15:17 -0700131 netif_start_queue(dev);
132 br_stp_enable_bridge(br);
Herbert Xu3fe2d7c2010-02-28 00:49:38 -0800133 br_multicast_open(br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
135 return 0;
136}
137
138static void br_dev_set_multicast_list(struct net_device *dev)
139{
140}
141
Vlad Yasevich2796d0c2014-05-16 09:59:20 -0400142static void br_dev_change_rx_flags(struct net_device *dev, int change)
143{
144 if (change & IFF_PROMISC)
145 br_manage_promisc(netdev_priv(dev));
146}
147
Linus Torvalds1da177e2005-04-16 15:20:36 -0700148static int br_dev_stop(struct net_device *dev)
149{
Herbert Xu3fe2d7c2010-02-28 00:49:38 -0800150 struct net_bridge *br = netdev_priv(dev);
151
152 br_stp_disable_bridge(br);
153 br_multicast_stop(br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700154
155 netif_stop_queue(dev);
156
157 return 0;
158}
159
Eric Dumazet28172732010-07-07 14:58:56 -0700160static struct rtnl_link_stats64 *br_get_stats64(struct net_device *dev,
161 struct rtnl_link_stats64 *stats)
stephen hemminger14bb4782010-03-02 13:32:09 +0000162{
163 struct net_bridge *br = netdev_priv(dev);
Li RongQing8f849852014-01-04 13:57:59 +0800164 struct pcpu_sw_netstats tmp, sum = { 0 };
stephen hemminger14bb4782010-03-02 13:32:09 +0000165 unsigned int cpu;
166
167 for_each_possible_cpu(cpu) {
Eric Dumazet406818f2010-06-23 13:00:48 -0700168 unsigned int start;
Li RongQing8f849852014-01-04 13:57:59 +0800169 const struct pcpu_sw_netstats *bstats
stephen hemminger14bb4782010-03-02 13:32:09 +0000170 = per_cpu_ptr(br->stats, cpu);
Eric Dumazet406818f2010-06-23 13:00:48 -0700171 do {
Eric W. Biederman57a77442014-03-13 21:26:42 -0700172 start = u64_stats_fetch_begin_irq(&bstats->syncp);
Eric Dumazet406818f2010-06-23 13:00:48 -0700173 memcpy(&tmp, bstats, sizeof(tmp));
Eric W. Biederman57a77442014-03-13 21:26:42 -0700174 } while (u64_stats_fetch_retry_irq(&bstats->syncp, start));
Eric Dumazet406818f2010-06-23 13:00:48 -0700175 sum.tx_bytes += tmp.tx_bytes;
176 sum.tx_packets += tmp.tx_packets;
177 sum.rx_bytes += tmp.rx_bytes;
178 sum.rx_packets += tmp.rx_packets;
stephen hemminger14bb4782010-03-02 13:32:09 +0000179 }
180
181 stats->tx_bytes = sum.tx_bytes;
182 stats->tx_packets = sum.tx_packets;
183 stats->rx_bytes = sum.rx_bytes;
184 stats->rx_packets = sum.rx_packets;
185
186 return stats;
187}
188
Linus Torvalds1da177e2005-04-16 15:20:36 -0700189static int br_change_mtu(struct net_device *dev, int new_mtu)
190{
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700191 struct net_bridge *br = netdev_priv(dev);
192 if (new_mtu < 68 || new_mtu > br_min_mtu(br))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193 return -EINVAL;
194
195 dev->mtu = new_mtu;
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700196
Pablo Neira Ayuso34666d42014-09-18 11:29:03 +0200197#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700198 /* remember the MTU in the rtable for PMTU */
David S. Millerdefb3512010-12-08 21:16:57 -0800199 dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu);
Simon Wunderlich4adf0af2008-07-30 16:27:55 -0700200#endif
201
Linus Torvalds1da177e2005-04-16 15:20:36 -0700202 return 0;
203}
204
Stephen Hemmingerffe1d492007-04-09 11:49:58 -0700205/* Allow setting mac address to any valid ethernet address. */
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800206static int br_set_mac_address(struct net_device *dev, void *p)
207{
208 struct net_bridge *br = netdev_priv(dev);
209 struct sockaddr *addr = p;
Stephen Hemmingerffe1d492007-04-09 11:49:58 -0700210
211 if (!is_valid_ether_addr(addr->sa_data))
Danny Kukawka7ca1e112012-02-21 02:07:52 +0000212 return -EADDRNOTAVAIL;
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800213
214 spin_lock_bh(&br->lock);
Joe Perches9a7b6ef92012-05-08 18:56:49 +0000215 if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) {
Toshiaki Makitaa3ebb7e2014-02-07 16:48:20 +0900216 /* Mac address will be changed in br_stp_change_bridge_id(). */
stephen hemminger43598812011-12-08 07:17:49 +0000217 br_stp_change_bridge_id(br, addr->sa_data);
218 }
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800219 spin_unlock_bh(&br->lock);
220
Stephen Hemmingerffe1d492007-04-09 11:49:58 -0700221 return 0;
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800222}
223
Stephen Hemmingeredb5e462005-12-21 19:00:58 -0800224static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info)
225{
Jiri Pirko7826d432013-01-06 00:44:26 +0000226 strlcpy(info->driver, "bridge", sizeof(info->driver));
227 strlcpy(info->version, BR_VERSION, sizeof(info->version));
228 strlcpy(info->fw_version, "N/A", sizeof(info->fw_version));
229 strlcpy(info->bus_info, "N/A", sizeof(info->bus_info));
Stephen Hemmingeredb5e462005-12-21 19:00:58 -0800230}
231
Michał Mirosławc8f44af2011-11-15 15:29:55 +0000232static netdev_features_t br_fix_features(struct net_device *dev,
233 netdev_features_t features)
Stephen Hemmingeredb5e462005-12-21 19:00:58 -0800234{
235 struct net_bridge *br = netdev_priv(dev);
236
Michał Mirosławc4d27ef2011-04-22 06:31:16 +0000237 return br_features_recompute(br, features);
Jesse Gross361ff8a2010-10-20 13:56:08 +0000238}
239
WANG Congc06ee962010-05-06 00:48:24 -0700240#ifdef CONFIG_NET_POLL_CONTROLLER
WANG Congc06ee962010-05-06 00:48:24 -0700241static void br_poll_controller(struct net_device *br_dev)
242{
WANG Congc06ee962010-05-06 00:48:24 -0700243}
244
Herbert Xu91d2c342010-06-10 16:12:50 +0000245static void br_netpoll_cleanup(struct net_device *dev)
WANG Congc06ee962010-05-06 00:48:24 -0700246{
stephen hemmingercfb478d2010-05-10 09:31:08 +0000247 struct net_bridge *br = netdev_priv(dev);
Amerigo Wang4e3828c2012-08-10 01:24:44 +0000248 struct net_bridge_port *p;
WANG Congc06ee962010-05-06 00:48:24 -0700249
Amerigo Wang4e3828c2012-08-10 01:24:44 +0000250 list_for_each_entry(p, &br->port_list, list)
Herbert Xu91d2c342010-06-10 16:12:50 +0000251 br_netpoll_disable(p);
WANG Congc06ee962010-05-06 00:48:24 -0700252}
253
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700254static int __br_netpoll_enable(struct net_bridge_port *p)
stephen hemmingercfb478d2010-05-10 09:31:08 +0000255{
Herbert Xu91d2c342010-06-10 16:12:50 +0000256 struct netpoll *np;
stephen hemminger93d8bf92013-07-24 11:51:41 -0700257 int err;
258
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700259 np = kzalloc(sizeof(*p->np), GFP_KERNEL);
Herbert Xu91d2c342010-06-10 16:12:50 +0000260 if (!np)
stephen hemminger93d8bf92013-07-24 11:51:41 -0700261 return -ENOMEM;
Herbert Xu91d2c342010-06-10 16:12:50 +0000262
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700263 err = __netpoll_setup(np, p->dev);
Herbert Xu91d2c342010-06-10 16:12:50 +0000264 if (err) {
265 kfree(np);
stephen hemminger93d8bf92013-07-24 11:51:41 -0700266 return err;
stephen hemmingercfb478d2010-05-10 09:31:08 +0000267 }
Herbert Xu91d2c342010-06-10 16:12:50 +0000268
269 p->np = np;
Herbert Xu91d2c342010-06-10 16:12:50 +0000270 return err;
271}
272
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700273int br_netpoll_enable(struct net_bridge_port *p)
Cong Wangdbe17302014-02-06 15:00:52 -0800274{
275 if (!p->br->dev->npinfo)
276 return 0;
277
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700278 return __br_netpoll_enable(p);
Cong Wangdbe17302014-02-06 15:00:52 -0800279}
280
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700281static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni)
Cong Wangdbe17302014-02-06 15:00:52 -0800282{
283 struct net_bridge *br = netdev_priv(dev);
284 struct net_bridge_port *p;
285 int err = 0;
286
287 list_for_each_entry(p, &br->port_list, list) {
288 if (!p->dev)
289 continue;
Eric W. Biedermana8779ec2014-03-27 15:36:38 -0700290 err = __br_netpoll_enable(p);
Cong Wangdbe17302014-02-06 15:00:52 -0800291 if (err)
292 goto fail;
293 }
294
295out:
296 return err;
297
298fail:
299 br_netpoll_cleanup(dev);
300 goto out;
301}
302
Herbert Xu91d2c342010-06-10 16:12:50 +0000303void br_netpoll_disable(struct net_bridge_port *p)
304{
305 struct netpoll *np = p->np;
306
307 if (!np)
308 return;
309
310 p->np = NULL;
311
Neil Horman2cde6ac2013-02-11 10:25:30 +0000312 __netpoll_free_async(np);
WANG Congc06ee962010-05-06 00:48:24 -0700313}
314
315#endif
316
Jiri Pirkoafc61512011-02-13 09:33:42 +0000317static int br_add_slave(struct net_device *dev, struct net_device *slave_dev)
318
319{
320 struct net_bridge *br = netdev_priv(dev);
321
322 return br_add_if(br, slave_dev);
323}
324
325static int br_del_slave(struct net_device *dev, struct net_device *slave_dev)
326{
327 struct net_bridge *br = netdev_priv(dev);
328
329 return br_del_if(br, slave_dev);
330}
331
Stephen Hemmingera2dbb882008-11-19 21:49:00 -0800332static const struct ethtool_ops br_ethtool_ops = {
Stephen Hemmingere4119a42008-08-15 19:51:07 -0700333 .get_drvinfo = br_getinfo,
334 .get_link = ethtool_op_get_link,
Stephen Hemmingeredb5e462005-12-21 19:00:58 -0800335};
336
Stephen Hemmingera2dbb882008-11-19 21:49:00 -0800337static const struct net_device_ops br_netdev_ops = {
338 .ndo_open = br_dev_open,
339 .ndo_stop = br_dev_stop,
stephen hemmingerbb900b22011-04-04 14:03:32 +0000340 .ndo_init = br_dev_init,
Stephen Hemminger00829822008-11-20 20:14:53 -0800341 .ndo_start_xmit = br_dev_xmit,
Eric Dumazet406818f2010-06-23 13:00:48 -0700342 .ndo_get_stats64 = br_get_stats64,
Stephen Hemminger00829822008-11-20 20:14:53 -0800343 .ndo_set_mac_address = br_set_mac_address,
Jiri Pirkoafc4b132011-08-16 06:29:01 +0000344 .ndo_set_rx_mode = br_dev_set_multicast_list,
Vlad Yasevich2796d0c2014-05-16 09:59:20 -0400345 .ndo_change_rx_flags = br_dev_change_rx_flags,
Stephen Hemminger00829822008-11-20 20:14:53 -0800346 .ndo_change_mtu = br_change_mtu,
347 .ndo_do_ioctl = br_dev_ioctl,
WANG Congc06ee962010-05-06 00:48:24 -0700348#ifdef CONFIG_NET_POLL_CONTROLLER
Herbert Xu91d2c342010-06-10 16:12:50 +0000349 .ndo_netpoll_setup = br_netpoll_setup,
WANG Congc06ee962010-05-06 00:48:24 -0700350 .ndo_netpoll_cleanup = br_netpoll_cleanup,
351 .ndo_poll_controller = br_poll_controller,
352#endif
Jiri Pirkoafc61512011-02-13 09:33:42 +0000353 .ndo_add_slave = br_add_slave,
354 .ndo_del_slave = br_del_slave,
Michał Mirosławc4d27ef2011-04-22 06:31:16 +0000355 .ndo_fix_features = br_fix_features,
Jiri Pirko18bfb922016-07-05 11:27:38 +0200356 .ndo_neigh_construct = netdev_default_l2upper_neigh_construct,
357 .ndo_neigh_destroy = netdev_default_l2upper_neigh_destroy,
John Fastabend77162022012-04-15 06:43:56 +0000358 .ndo_fdb_add = br_fdb_add,
359 .ndo_fdb_del = br_fdb_delete,
360 .ndo_fdb_dump = br_fdb_dump,
John Fastabende5a55a82012-10-24 08:12:57 +0000361 .ndo_bridge_getlink = br_getlink,
362 .ndo_bridge_setlink = br_setlink,
Vlad Yasevich407af322013-02-13 12:00:12 +0000363 .ndo_bridge_dellink = br_dellink,
Toshiaki Makita66780532015-07-31 15:03:26 +0900364 .ndo_features_check = passthru_features_check,
Stephen Hemmingera2dbb882008-11-19 21:49:00 -0800365};
366
stephen hemminger14bb4782010-03-02 13:32:09 +0000367static void br_dev_free(struct net_device *dev)
368{
369 struct net_bridge *br = netdev_priv(dev);
370
371 free_percpu(br->stats);
372 free_netdev(dev);
373}
374
stephen hemmingerbb900b22011-04-04 14:03:32 +0000375static struct device_type br_type = {
376 .name = "bridge",
377};
378
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379void br_dev_setup(struct net_device *dev)
380{
stephen hemmingerbb900b22011-04-04 14:03:32 +0000381 struct net_bridge *br = netdev_priv(dev);
382
Danny Kukawka7ce5d222012-02-15 06:45:40 +0000383 eth_hw_addr_random(dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 ether_setup(dev);
385
Stephen Hemmingera2dbb882008-11-19 21:49:00 -0800386 dev->netdev_ops = &br_netdev_ops;
stephen hemminger14bb4782010-03-02 13:32:09 +0000387 dev->destructor = br_dev_free;
Wilfried Klaebe7ad24ea2014-05-11 00:12:32 +0000388 dev->ethtool_ops = &br_ethtool_ops;
stephen hemmingerbb900b22011-04-04 14:03:32 +0000389 SET_NETDEV_DEVTYPE(dev, &br_type);
Phil Sutterccecb2a2015-08-18 10:30:37 +0200390 dev->priv_flags = IFF_EBRIDGE | IFF_NO_QUEUE;
Stephen Hemmingeredb5e462005-12-21 19:00:58 -0800391
Vlad Yasevich161f65b2013-05-22 07:49:34 +0000392 dev->features = COMMON_FEATURES | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL |
Toshiaki Makita1c5abb62014-06-10 20:59:22 +0900393 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_STAG_TX;
394 dev->hw_features = COMMON_FEATURES | NETIF_F_HW_VLAN_CTAG_TX |
395 NETIF_F_HW_VLAN_STAG_TX;
Vlad Yasevich161f65b2013-05-22 07:49:34 +0000396 dev->vlan_features = COMMON_FEATURES;
stephen hemmingerbb900b22011-04-04 14:03:32 +0000397
398 br->dev = dev;
399 spin_lock_init(&br->lock);
400 INIT_LIST_HEAD(&br->port_list);
401 spin_lock_init(&br->hash_lock);
402
403 br->bridge_id.prio[0] = 0x80;
404 br->bridge_id.prio[1] = 0x00;
405
Joe Perchese5a727f2014-02-23 00:05:25 -0800406 ether_addr_copy(br->group_addr, eth_reserved_addr_base);
stephen hemmingerbb900b22011-04-04 14:03:32 +0000407
stephen hemmingerbb900b22011-04-04 14:03:32 +0000408 br->stp_enabled = BR_NO_STP;
stephen hemminger515853c2011-10-03 18:14:46 +0000409 br->group_fwd_mask = BR_GROUPFWD_DEFAULT;
Toshiaki Makitaf2808d22014-06-10 20:59:24 +0900410 br->group_fwd_mask_required = BR_GROUPFWD_DEFAULT;
stephen hemminger515853c2011-10-03 18:14:46 +0000411
stephen hemmingerbb900b22011-04-04 14:03:32 +0000412 br->designated_root = br->bridge_id;
413 br->bridge_max_age = br->max_age = 20 * HZ;
414 br->bridge_hello_time = br->hello_time = 2 * HZ;
415 br->bridge_forward_delay = br->forward_delay = 15 * HZ;
Scott Feldmana79e88d2015-09-23 08:39:16 -0700416 br->ageing_time = BR_DEFAULT_AGEING_TIME;
stephen hemmingerbb900b22011-04-04 14:03:32 +0000417
418 br_netfilter_rtable_init(br);
419 br_stp_timer_init(br);
420 br_multicast_init(br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421}