Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Device handling code |
| 3 | * Linux ethernet bridge |
| 4 | * |
| 5 | * Authors: |
| 6 | * Lennert Buytenhek <buytenh@gnu.org> |
| 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 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 | |
| 14 | #include <linux/kernel.h> |
| 15 | #include <linux/netdevice.h> |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 16 | #include <linux/netpoll.h> |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 17 | #include <linux/etherdevice.h> |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 18 | #include <linux/ethtool.h> |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 19 | #include <linux/list.h> |
Bart De Schuymer | ea2d9b4 | 2010-04-15 12:14:51 +0200 | [diff] [blame] | 20 | #include <linux/netfilter_bridge.h> |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 21 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | #include <asm/uaccess.h> |
| 23 | #include "br_private.h" |
| 24 | |
Vlad Yasevich | 161f65b | 2013-05-22 07:49:34 +0000 | [diff] [blame] | 25 | #define COMMON_FEATURES (NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_HIGHDMA | \ |
| 26 | NETIF_F_GSO_MASK | NETIF_F_HW_CSUM) |
| 27 | |
stephen hemminger | eeaf61d | 2010-07-27 08:26:30 +0000 | [diff] [blame] | 28 | /* net device transmit always called with BH disabled */ |
Stephen Hemminger | 6fef4c0 | 2009-08-31 19:50:41 +0000 | [diff] [blame] | 29 | netdev_tx_t br_dev_xmit(struct sk_buff *skb, struct net_device *dev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 30 | { |
| 31 | struct net_bridge *br = netdev_priv(dev); |
| 32 | const unsigned char *dest = skb->data; |
| 33 | struct net_bridge_fdb_entry *dst; |
Herbert Xu | c4fcb78 | 2010-02-27 19:41:48 +0000 | [diff] [blame] | 34 | struct net_bridge_mdb_entry *mdst; |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 35 | struct pcpu_sw_netstats *brstats = this_cpu_ptr(br->stats); |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 36 | u16 vid = 0; |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 37 | |
Stephen Hemminger | c03307e | 2012-08-14 08:19:33 -0700 | [diff] [blame] | 38 | rcu_read_lock(); |
Bart De Schuymer | ea2d9b4 | 2010-04-15 12:14:51 +0200 | [diff] [blame] | 39 | #ifdef CONFIG_BRIDGE_NETFILTER |
| 40 | if (skb->nf_bridge && (skb->nf_bridge->mask & BRNF_BRIDGED_DNAT)) { |
| 41 | br_nf_pre_routing_finish_bridge_slow(skb); |
Stephen Hemminger | c03307e | 2012-08-14 08:19:33 -0700 | [diff] [blame] | 42 | rcu_read_unlock(); |
Bart De Schuymer | ea2d9b4 | 2010-04-15 12:14:51 +0200 | [diff] [blame] | 43 | return NETDEV_TX_OK; |
| 44 | } |
| 45 | #endif |
| 46 | |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 47 | u64_stats_update_begin(&brstats->syncp); |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 48 | brstats->tx_packets++; |
| 49 | brstats->tx_bytes += skb->len; |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 50 | u64_stats_update_end(&brstats->syncp); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 51 | |
Vlad Yasevich | 7885198 | 2013-02-13 12:00:14 +0000 | [diff] [blame] | 52 | if (!br_allowed_ingress(br, br_get_vlan_info(br), skb, &vid)) |
Vlad Yasevich | a37b85c | 2013-02-13 12:00:10 +0000 | [diff] [blame] | 53 | goto out; |
| 54 | |
Herbert Xu | 6088a53 | 2010-02-27 19:41:42 +0000 | [diff] [blame] | 55 | BR_INPUT_SKB_CB(skb)->brdev = dev; |
| 56 | |
Arnaldo Carvalho de Melo | 459a98e | 2007-03-19 15:30:44 -0700 | [diff] [blame] | 57 | skb_reset_mac_header(skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | skb_pull(skb, ETH_HLEN); |
| 59 | |
Herbert Xu | 4466146 | 2011-07-05 13:58:33 +0000 | [diff] [blame] | 60 | if (is_broadcast_ether_addr(dest)) |
Vlad Yasevich | 867a594 | 2013-06-05 10:08:01 -0400 | [diff] [blame] | 61 | br_flood_deliver(br, skb, false); |
Herbert Xu | 4466146 | 2011-07-05 13:58:33 +0000 | [diff] [blame] | 62 | else if (is_multicast_ether_addr(dest)) { |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 63 | if (unlikely(netpoll_tx_running(dev))) { |
Vlad Yasevich | 867a594 | 2013-06-05 10:08:01 -0400 | [diff] [blame] | 64 | br_flood_deliver(br, skb, false); |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 65 | goto out; |
| 66 | } |
Vlad Yasevich | 0649909 | 2013-10-28 15:45:07 -0400 | [diff] [blame] | 67 | if (br_multicast_rcv(br, NULL, skb, vid)) { |
Herbert Xu | 6d1d1d3 | 2010-07-29 01:12:31 +0000 | [diff] [blame] | 68 | kfree_skb(skb); |
Herbert Xu | c4fcb78 | 2010-02-27 19:41:48 +0000 | [diff] [blame] | 69 | goto out; |
Herbert Xu | 6d1d1d3 | 2010-07-29 01:12:31 +0000 | [diff] [blame] | 70 | } |
Herbert Xu | c4fcb78 | 2010-02-27 19:41:48 +0000 | [diff] [blame] | 71 | |
Cong Wang | fbca58a | 2013-03-07 03:05:33 +0000 | [diff] [blame] | 72 | mdst = br_mdb_get(br, skb, vid); |
Linus Lüssing | b00589a | 2013-08-01 01:06:20 +0200 | [diff] [blame] | 73 | if ((mdst || BR_INPUT_SKB_CB_MROUTERS_ONLY(skb)) && |
Linus Lüssing | cc0fdd8 | 2013-08-30 17:28:17 +0200 | [diff] [blame] | 74 | br_multicast_querier_exists(br, eth_hdr(skb))) |
Herbert Xu | c4fcb78 | 2010-02-27 19:41:48 +0000 | [diff] [blame] | 75 | br_multicast_deliver(mdst, skb); |
| 76 | else |
Vlad Yasevich | 867a594 | 2013-06-05 10:08:01 -0400 | [diff] [blame] | 77 | br_flood_deliver(br, skb, false); |
Vlad Yasevich | 2ba071e | 2013-02-13 12:00:16 +0000 | [diff] [blame] | 78 | } else if ((dst = __br_fdb_get(br, dest, vid)) != NULL) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 79 | br_deliver(dst->dst, skb); |
| 80 | else |
Vlad Yasevich | 867a594 | 2013-06-05 10:08:01 -0400 | [diff] [blame] | 81 | br_flood_deliver(br, skb, true); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Herbert Xu | c4fcb78 | 2010-02-27 19:41:48 +0000 | [diff] [blame] | 83 | out: |
stephen hemminger | eeaf61d | 2010-07-27 08:26:30 +0000 | [diff] [blame] | 84 | rcu_read_unlock(); |
Patrick McHardy | 6ed1065 | 2009-06-23 06:03:08 +0000 | [diff] [blame] | 85 | return NETDEV_TX_OK; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 86 | } |
| 87 | |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 88 | static int br_dev_init(struct net_device *dev) |
| 89 | { |
| 90 | struct net_bridge *br = netdev_priv(dev); |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 91 | int i; |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 92 | |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 93 | br->stats = alloc_percpu(struct pcpu_sw_netstats); |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 94 | if (!br->stats) |
| 95 | return -ENOMEM; |
| 96 | |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 97 | for_each_possible_cpu(i) { |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 98 | struct pcpu_sw_netstats *br_dev_stats; |
John Stultz | 827da44 | 2013-10-07 15:51:58 -0700 | [diff] [blame] | 99 | br_dev_stats = per_cpu_ptr(br->stats, i); |
| 100 | u64_stats_init(&br_dev_stats->syncp); |
| 101 | } |
| 102 | |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 103 | return 0; |
| 104 | } |
| 105 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 106 | static int br_dev_open(struct net_device *dev) |
| 107 | { |
Stephen Hemminger | 81d3530 | 2005-05-29 14:15:17 -0700 | [diff] [blame] | 108 | struct net_bridge *br = netdev_priv(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | |
Michał Mirosław | c4d27ef | 2011-04-22 06:31:16 +0000 | [diff] [blame] | 110 | netdev_update_features(dev); |
Stephen Hemminger | 81d3530 | 2005-05-29 14:15:17 -0700 | [diff] [blame] | 111 | netif_start_queue(dev); |
| 112 | br_stp_enable_bridge(br); |
Herbert Xu | 3fe2d7c | 2010-02-28 00:49:38 -0800 | [diff] [blame] | 113 | br_multicast_open(br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 114 | |
| 115 | return 0; |
| 116 | } |
| 117 | |
| 118 | static void br_dev_set_multicast_list(struct net_device *dev) |
| 119 | { |
| 120 | } |
| 121 | |
| 122 | static int br_dev_stop(struct net_device *dev) |
| 123 | { |
Herbert Xu | 3fe2d7c | 2010-02-28 00:49:38 -0800 | [diff] [blame] | 124 | struct net_bridge *br = netdev_priv(dev); |
| 125 | |
| 126 | br_stp_disable_bridge(br); |
| 127 | br_multicast_stop(br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
| 129 | netif_stop_queue(dev); |
| 130 | |
| 131 | return 0; |
| 132 | } |
| 133 | |
Eric Dumazet | 2817273 | 2010-07-07 14:58:56 -0700 | [diff] [blame] | 134 | static struct rtnl_link_stats64 *br_get_stats64(struct net_device *dev, |
| 135 | struct rtnl_link_stats64 *stats) |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 136 | { |
| 137 | struct net_bridge *br = netdev_priv(dev); |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 138 | struct pcpu_sw_netstats tmp, sum = { 0 }; |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 139 | unsigned int cpu; |
| 140 | |
| 141 | for_each_possible_cpu(cpu) { |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 142 | unsigned int start; |
Li RongQing | 8f84985 | 2014-01-04 13:57:59 +0800 | [diff] [blame] | 143 | const struct pcpu_sw_netstats *bstats |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 144 | = per_cpu_ptr(br->stats, cpu); |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 145 | do { |
Kevin Groeneveld | e390648 | 2012-07-21 06:30:50 +0000 | [diff] [blame] | 146 | start = u64_stats_fetch_begin_bh(&bstats->syncp); |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 147 | memcpy(&tmp, bstats, sizeof(tmp)); |
Kevin Groeneveld | e390648 | 2012-07-21 06:30:50 +0000 | [diff] [blame] | 148 | } while (u64_stats_fetch_retry_bh(&bstats->syncp, start)); |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 149 | sum.tx_bytes += tmp.tx_bytes; |
| 150 | sum.tx_packets += tmp.tx_packets; |
| 151 | sum.rx_bytes += tmp.rx_bytes; |
| 152 | sum.rx_packets += tmp.rx_packets; |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 153 | } |
| 154 | |
| 155 | stats->tx_bytes = sum.tx_bytes; |
| 156 | stats->tx_packets = sum.tx_packets; |
| 157 | stats->rx_bytes = sum.rx_bytes; |
| 158 | stats->rx_packets = sum.rx_packets; |
| 159 | |
| 160 | return stats; |
| 161 | } |
| 162 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 163 | static int br_change_mtu(struct net_device *dev, int new_mtu) |
| 164 | { |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 165 | struct net_bridge *br = netdev_priv(dev); |
| 166 | if (new_mtu < 68 || new_mtu > br_min_mtu(br)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 167 | return -EINVAL; |
| 168 | |
| 169 | dev->mtu = new_mtu; |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 170 | |
| 171 | #ifdef CONFIG_BRIDGE_NETFILTER |
| 172 | /* remember the MTU in the rtable for PMTU */ |
David S. Miller | defb351 | 2010-12-08 21:16:57 -0800 | [diff] [blame] | 173 | dst_metric_set(&br->fake_rtable.dst, RTAX_MTU, new_mtu); |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 174 | #endif |
| 175 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | return 0; |
| 177 | } |
| 178 | |
Stephen Hemminger | ffe1d49 | 2007-04-09 11:49:58 -0700 | [diff] [blame] | 179 | /* Allow setting mac address to any valid ethernet address. */ |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 180 | static int br_set_mac_address(struct net_device *dev, void *p) |
| 181 | { |
| 182 | struct net_bridge *br = netdev_priv(dev); |
| 183 | struct sockaddr *addr = p; |
Stephen Hemminger | ffe1d49 | 2007-04-09 11:49:58 -0700 | [diff] [blame] | 184 | |
| 185 | if (!is_valid_ether_addr(addr->sa_data)) |
Danny Kukawka | 7ca1e11 | 2012-02-21 02:07:52 +0000 | [diff] [blame] | 186 | return -EADDRNOTAVAIL; |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 187 | |
| 188 | spin_lock_bh(&br->lock); |
Joe Perches | 9a7b6ef9 | 2012-05-08 18:56:49 +0000 | [diff] [blame] | 189 | if (!ether_addr_equal(dev->dev_addr, addr->sa_data)) { |
stephen hemminger | 4359881 | 2011-12-08 07:17:49 +0000 | [diff] [blame] | 190 | memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN); |
| 191 | br_fdb_change_mac_address(br, addr->sa_data); |
| 192 | br_stp_change_bridge_id(br, addr->sa_data); |
| 193 | } |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 194 | spin_unlock_bh(&br->lock); |
| 195 | |
Stephen Hemminger | ffe1d49 | 2007-04-09 11:49:58 -0700 | [diff] [blame] | 196 | return 0; |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 197 | } |
| 198 | |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 199 | static void br_getinfo(struct net_device *dev, struct ethtool_drvinfo *info) |
| 200 | { |
Jiri Pirko | 7826d43 | 2013-01-06 00:44:26 +0000 | [diff] [blame] | 201 | strlcpy(info->driver, "bridge", sizeof(info->driver)); |
| 202 | strlcpy(info->version, BR_VERSION, sizeof(info->version)); |
| 203 | strlcpy(info->fw_version, "N/A", sizeof(info->fw_version)); |
| 204 | strlcpy(info->bus_info, "N/A", sizeof(info->bus_info)); |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 205 | } |
| 206 | |
Michał Mirosław | c8f44af | 2011-11-15 15:29:55 +0000 | [diff] [blame] | 207 | static netdev_features_t br_fix_features(struct net_device *dev, |
| 208 | netdev_features_t features) |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 209 | { |
| 210 | struct net_bridge *br = netdev_priv(dev); |
| 211 | |
Michał Mirosław | c4d27ef | 2011-04-22 06:31:16 +0000 | [diff] [blame] | 212 | return br_features_recompute(br, features); |
Jesse Gross | 361ff8a | 2010-10-20 13:56:08 +0000 | [diff] [blame] | 213 | } |
| 214 | |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 215 | #ifdef CONFIG_NET_POLL_CONTROLLER |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 216 | static void br_poll_controller(struct net_device *br_dev) |
| 217 | { |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 218 | } |
| 219 | |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 220 | static void br_netpoll_cleanup(struct net_device *dev) |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 221 | { |
stephen hemminger | cfb478d | 2010-05-10 09:31:08 +0000 | [diff] [blame] | 222 | struct net_bridge *br = netdev_priv(dev); |
Amerigo Wang | 4e3828c | 2012-08-10 01:24:44 +0000 | [diff] [blame] | 223 | struct net_bridge_port *p; |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 224 | |
Amerigo Wang | 4e3828c | 2012-08-10 01:24:44 +0000 | [diff] [blame] | 225 | list_for_each_entry(p, &br->port_list, list) |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 226 | br_netpoll_disable(p); |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 227 | } |
| 228 | |
Amerigo Wang | 47be03a2 | 2012-08-10 01:24:37 +0000 | [diff] [blame] | 229 | static int br_netpoll_setup(struct net_device *dev, struct netpoll_info *ni, |
| 230 | gfp_t gfp) |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 231 | { |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 232 | struct net_bridge *br = netdev_priv(dev); |
Amerigo Wang | 4e3828c | 2012-08-10 01:24:44 +0000 | [diff] [blame] | 233 | struct net_bridge_port *p; |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 234 | int err = 0; |
| 235 | |
Amerigo Wang | 4e3828c | 2012-08-10 01:24:44 +0000 | [diff] [blame] | 236 | list_for_each_entry(p, &br->port_list, list) { |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 237 | if (!p->dev) |
| 238 | continue; |
Amerigo Wang | 47be03a2 | 2012-08-10 01:24:37 +0000 | [diff] [blame] | 239 | err = br_netpoll_enable(p, gfp); |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 240 | if (err) |
| 241 | goto fail; |
| 242 | } |
| 243 | |
| 244 | out: |
| 245 | return err; |
| 246 | |
| 247 | fail: |
| 248 | br_netpoll_cleanup(dev); |
| 249 | goto out; |
stephen hemminger | cfb478d | 2010-05-10 09:31:08 +0000 | [diff] [blame] | 250 | } |
| 251 | |
Amerigo Wang | 47be03a2 | 2012-08-10 01:24:37 +0000 | [diff] [blame] | 252 | int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) |
stephen hemminger | cfb478d | 2010-05-10 09:31:08 +0000 | [diff] [blame] | 253 | { |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 254 | struct netpoll *np; |
stephen hemminger | 93d8bf9 | 2013-07-24 11:51:41 -0700 | [diff] [blame] | 255 | int err; |
| 256 | |
| 257 | if (!p->br->dev->npinfo) |
| 258 | return 0; |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 259 | |
Amerigo Wang | 47be03a2 | 2012-08-10 01:24:37 +0000 | [diff] [blame] | 260 | np = kzalloc(sizeof(*p->np), gfp); |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 261 | if (!np) |
stephen hemminger | 93d8bf9 | 2013-07-24 11:51:41 -0700 | [diff] [blame] | 262 | return -ENOMEM; |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 263 | |
Amerigo Wang | 47be03a2 | 2012-08-10 01:24:37 +0000 | [diff] [blame] | 264 | err = __netpoll_setup(np, p->dev, gfp); |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 265 | if (err) { |
| 266 | kfree(np); |
stephen hemminger | 93d8bf9 | 2013-07-24 11:51:41 -0700 | [diff] [blame] | 267 | return err; |
stephen hemminger | cfb478d | 2010-05-10 09:31:08 +0000 | [diff] [blame] | 268 | } |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 269 | |
| 270 | p->np = np; |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 271 | return err; |
| 272 | } |
| 273 | |
| 274 | void br_netpoll_disable(struct net_bridge_port *p) |
| 275 | { |
| 276 | struct netpoll *np = p->np; |
| 277 | |
| 278 | if (!np) |
| 279 | return; |
| 280 | |
| 281 | p->np = NULL; |
| 282 | |
Neil Horman | 2cde6ac | 2013-02-11 10:25:30 +0000 | [diff] [blame] | 283 | __netpoll_free_async(np); |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 284 | } |
| 285 | |
| 286 | #endif |
| 287 | |
Jiri Pirko | afc6151 | 2011-02-13 09:33:42 +0000 | [diff] [blame] | 288 | static int br_add_slave(struct net_device *dev, struct net_device *slave_dev) |
| 289 | |
| 290 | { |
| 291 | struct net_bridge *br = netdev_priv(dev); |
| 292 | |
| 293 | return br_add_if(br, slave_dev); |
| 294 | } |
| 295 | |
| 296 | static int br_del_slave(struct net_device *dev, struct net_device *slave_dev) |
| 297 | { |
| 298 | struct net_bridge *br = netdev_priv(dev); |
| 299 | |
| 300 | return br_del_if(br, slave_dev); |
| 301 | } |
| 302 | |
Stephen Hemminger | a2dbb88 | 2008-11-19 21:49:00 -0800 | [diff] [blame] | 303 | static const struct ethtool_ops br_ethtool_ops = { |
Stephen Hemminger | e4119a4 | 2008-08-15 19:51:07 -0700 | [diff] [blame] | 304 | .get_drvinfo = br_getinfo, |
| 305 | .get_link = ethtool_op_get_link, |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 306 | }; |
| 307 | |
Stephen Hemminger | a2dbb88 | 2008-11-19 21:49:00 -0800 | [diff] [blame] | 308 | static const struct net_device_ops br_netdev_ops = { |
| 309 | .ndo_open = br_dev_open, |
| 310 | .ndo_stop = br_dev_stop, |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 311 | .ndo_init = br_dev_init, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 312 | .ndo_start_xmit = br_dev_xmit, |
Eric Dumazet | 406818f | 2010-06-23 13:00:48 -0700 | [diff] [blame] | 313 | .ndo_get_stats64 = br_get_stats64, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 314 | .ndo_set_mac_address = br_set_mac_address, |
Jiri Pirko | afc4b13 | 2011-08-16 06:29:01 +0000 | [diff] [blame] | 315 | .ndo_set_rx_mode = br_dev_set_multicast_list, |
Stephen Hemminger | 0082982 | 2008-11-20 20:14:53 -0800 | [diff] [blame] | 316 | .ndo_change_mtu = br_change_mtu, |
| 317 | .ndo_do_ioctl = br_dev_ioctl, |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 318 | #ifdef CONFIG_NET_POLL_CONTROLLER |
Herbert Xu | 91d2c34 | 2010-06-10 16:12:50 +0000 | [diff] [blame] | 319 | .ndo_netpoll_setup = br_netpoll_setup, |
WANG Cong | c06ee96 | 2010-05-06 00:48:24 -0700 | [diff] [blame] | 320 | .ndo_netpoll_cleanup = br_netpoll_cleanup, |
| 321 | .ndo_poll_controller = br_poll_controller, |
| 322 | #endif |
Jiri Pirko | afc6151 | 2011-02-13 09:33:42 +0000 | [diff] [blame] | 323 | .ndo_add_slave = br_add_slave, |
| 324 | .ndo_del_slave = br_del_slave, |
Michał Mirosław | c4d27ef | 2011-04-22 06:31:16 +0000 | [diff] [blame] | 325 | .ndo_fix_features = br_fix_features, |
John Fastabend | 7716202 | 2012-04-15 06:43:56 +0000 | [diff] [blame] | 326 | .ndo_fdb_add = br_fdb_add, |
| 327 | .ndo_fdb_del = br_fdb_delete, |
| 328 | .ndo_fdb_dump = br_fdb_dump, |
John Fastabend | e5a55a8 | 2012-10-24 08:12:57 +0000 | [diff] [blame] | 329 | .ndo_bridge_getlink = br_getlink, |
| 330 | .ndo_bridge_setlink = br_setlink, |
Vlad Yasevich | 407af32 | 2013-02-13 12:00:12 +0000 | [diff] [blame] | 331 | .ndo_bridge_dellink = br_dellink, |
Stephen Hemminger | a2dbb88 | 2008-11-19 21:49:00 -0800 | [diff] [blame] | 332 | }; |
| 333 | |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 334 | static void br_dev_free(struct net_device *dev) |
| 335 | { |
| 336 | struct net_bridge *br = netdev_priv(dev); |
| 337 | |
| 338 | free_percpu(br->stats); |
| 339 | free_netdev(dev); |
| 340 | } |
| 341 | |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 342 | static struct device_type br_type = { |
| 343 | .name = "bridge", |
| 344 | }; |
| 345 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 346 | void br_dev_setup(struct net_device *dev) |
| 347 | { |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 348 | struct net_bridge *br = netdev_priv(dev); |
| 349 | |
Danny Kukawka | 7ce5d22 | 2012-02-15 06:45:40 +0000 | [diff] [blame] | 350 | eth_hw_addr_random(dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | ether_setup(dev); |
| 352 | |
Stephen Hemminger | a2dbb88 | 2008-11-19 21:49:00 -0800 | [diff] [blame] | 353 | dev->netdev_ops = &br_netdev_ops; |
stephen hemminger | 14bb478 | 2010-03-02 13:32:09 +0000 | [diff] [blame] | 354 | dev->destructor = br_dev_free; |
YOSHIFUJI Hideaki | 9d6f229 | 2007-02-09 23:24:35 +0900 | [diff] [blame] | 355 | SET_ETHTOOL_OPS(dev, &br_ethtool_ops); |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 356 | SET_NETDEV_DEVTYPE(dev, &br_type); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 357 | dev->tx_queue_len = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 358 | dev->priv_flags = IFF_EBRIDGE; |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 359 | |
Vlad Yasevich | 161f65b | 2013-05-22 07:49:34 +0000 | [diff] [blame] | 360 | dev->features = COMMON_FEATURES | NETIF_F_LLTX | NETIF_F_NETNS_LOCAL | |
| 361 | NETIF_F_HW_VLAN_CTAG_TX; |
| 362 | dev->hw_features = COMMON_FEATURES | NETIF_F_HW_VLAN_CTAG_TX; |
| 363 | dev->vlan_features = COMMON_FEATURES; |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 364 | |
| 365 | br->dev = dev; |
| 366 | spin_lock_init(&br->lock); |
| 367 | INIT_LIST_HEAD(&br->port_list); |
| 368 | spin_lock_init(&br->hash_lock); |
| 369 | |
| 370 | br->bridge_id.prio[0] = 0x80; |
| 371 | br->bridge_id.prio[1] = 0x00; |
| 372 | |
Ben Hutchings | 2bc8005 | 2012-11-01 09:12:02 +0000 | [diff] [blame] | 373 | memcpy(br->group_addr, eth_reserved_addr_base, ETH_ALEN); |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 374 | |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 375 | br->stp_enabled = BR_NO_STP; |
stephen hemminger | 515853c | 2011-10-03 18:14:46 +0000 | [diff] [blame] | 376 | br->group_fwd_mask = BR_GROUPFWD_DEFAULT; |
| 377 | |
stephen hemminger | bb900b2 | 2011-04-04 14:03:32 +0000 | [diff] [blame] | 378 | br->designated_root = br->bridge_id; |
| 379 | br->bridge_max_age = br->max_age = 20 * HZ; |
| 380 | br->bridge_hello_time = br->hello_time = 2 * HZ; |
| 381 | br->bridge_forward_delay = br->forward_delay = 15 * HZ; |
| 382 | br->ageing_time = 300 * HZ; |
| 383 | |
| 384 | br_netfilter_rtable_init(br); |
| 385 | br_stp_timer_init(br); |
| 386 | br_multicast_init(br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 387 | } |