Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Linux ethernet bridge |
| 3 | * |
| 4 | * Authors: |
| 5 | * Lennert Buytenhek <buytenh@gnu.org> |
| 6 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * This program is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU General Public License |
| 9 | * as published by the Free Software Foundation; either version |
| 10 | * 2 of the License, or (at your option) any later version. |
| 11 | */ |
| 12 | |
| 13 | #ifndef _BR_PRIVATE_H |
| 14 | #define _BR_PRIVATE_H |
| 15 | |
| 16 | #include <linux/netdevice.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | #include <linux/if_bridge.h> |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 18 | #include <net/route.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | |
| 20 | #define BR_HASH_BITS 8 |
| 21 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) |
| 22 | |
| 23 | #define BR_HOLD_TIME (1*HZ) |
| 24 | |
| 25 | #define BR_PORT_BITS 10 |
| 26 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) |
| 27 | |
Stephen Hemminger | 9cde070 | 2007-03-21 14:22:44 -0700 | [diff] [blame] | 28 | #define BR_VERSION "2.3" |
| 29 | |
| 30 | /* Path to usermode spanning tree program */ |
| 31 | #define BR_STP_PROG "/sbin/bridge-stp" |
Stephen Hemminger | 8cbb512 | 2005-12-21 19:01:30 -0800 | [diff] [blame] | 32 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 33 | typedef struct bridge_id bridge_id; |
| 34 | typedef struct mac_addr mac_addr; |
| 35 | typedef __u16 port_id; |
| 36 | |
| 37 | struct bridge_id |
| 38 | { |
| 39 | unsigned char prio[2]; |
| 40 | unsigned char addr[6]; |
| 41 | }; |
| 42 | |
| 43 | struct mac_addr |
| 44 | { |
| 45 | unsigned char addr[6]; |
| 46 | }; |
| 47 | |
| 48 | struct net_bridge_fdb_entry |
| 49 | { |
| 50 | struct hlist_node hlist; |
| 51 | struct net_bridge_port *dst; |
| 52 | |
| 53 | struct rcu_head rcu; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 54 | unsigned long ageing_timer; |
| 55 | mac_addr addr; |
| 56 | unsigned char is_local; |
| 57 | unsigned char is_static; |
| 58 | }; |
| 59 | |
| 60 | struct net_bridge_port |
| 61 | { |
| 62 | struct net_bridge *br; |
| 63 | struct net_device *dev; |
| 64 | struct list_head list; |
| 65 | |
| 66 | /* STP */ |
| 67 | u8 priority; |
| 68 | u8 state; |
| 69 | u16 port_no; |
| 70 | unsigned char topology_change_ack; |
| 71 | unsigned char config_pending; |
| 72 | port_id port_id; |
| 73 | port_id designated_port; |
| 74 | bridge_id designated_root; |
| 75 | bridge_id designated_bridge; |
| 76 | u32 path_cost; |
| 77 | u32 designated_cost; |
| 78 | |
| 79 | struct timer_list forward_delay_timer; |
| 80 | struct timer_list hold_timer; |
| 81 | struct timer_list message_age_timer; |
| 82 | struct kobject kobj; |
| 83 | struct rcu_head rcu; |
Fischer, Anna | 3982d3d | 2009-08-13 06:55:16 +0000 | [diff] [blame] | 84 | |
| 85 | unsigned long flags; |
| 86 | #define BR_HAIRPIN_MODE 0x00000001 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 87 | }; |
| 88 | |
| 89 | struct net_bridge |
| 90 | { |
| 91 | spinlock_t lock; |
| 92 | struct list_head port_list; |
| 93 | struct net_device *dev; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 94 | spinlock_t hash_lock; |
| 95 | struct hlist_head hash[BR_HASH_SIZE]; |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 96 | unsigned long feature_mask; |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 97 | #ifdef CONFIG_BRIDGE_NETFILTER |
| 98 | struct rtable fake_rtable; |
| 99 | #endif |
Stephen Hemminger | 92c0574 | 2008-06-17 16:10:06 -0700 | [diff] [blame] | 100 | unsigned long flags; |
| 101 | #define BR_SET_MAC_ADDR 0x00000001 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 102 | |
| 103 | /* STP */ |
| 104 | bridge_id designated_root; |
| 105 | bridge_id bridge_id; |
| 106 | u32 root_path_cost; |
| 107 | unsigned long max_age; |
| 108 | unsigned long hello_time; |
| 109 | unsigned long forward_delay; |
| 110 | unsigned long bridge_max_age; |
| 111 | unsigned long ageing_time; |
| 112 | unsigned long bridge_hello_time; |
| 113 | unsigned long bridge_forward_delay; |
| 114 | |
Stephen Hemminger | fda93d9 | 2006-03-20 22:59:21 -0800 | [diff] [blame] | 115 | u8 group_addr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 116 | u16 root_port; |
Stephen Hemminger | 9cde070 | 2007-03-21 14:22:44 -0700 | [diff] [blame] | 117 | |
| 118 | enum { |
| 119 | BR_NO_STP, /* no spanning tree */ |
| 120 | BR_KERNEL_STP, /* old STP in kernel */ |
| 121 | BR_USER_STP, /* new RSTP in userspace */ |
| 122 | } stp_enabled; |
| 123 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 124 | unsigned char topology_change; |
| 125 | unsigned char topology_change_detected; |
| 126 | |
| 127 | struct timer_list hello_timer; |
| 128 | struct timer_list tcn_timer; |
| 129 | struct timer_list topology_change_timer; |
| 130 | struct timer_list gc_timer; |
Greg Kroah-Hartman | 43b98c4 | 2007-12-17 15:54:39 -0400 | [diff] [blame] | 131 | struct kobject *ifobj; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 132 | }; |
| 133 | |
| 134 | extern struct notifier_block br_device_notifier; |
Stephen Hemminger | fda93d9 | 2006-03-20 22:59:21 -0800 | [diff] [blame] | 135 | extern const u8 br_group_address[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 136 | |
| 137 | /* called under bridge lock */ |
| 138 | static inline int br_is_root_bridge(const struct net_bridge *br) |
| 139 | { |
| 140 | return !memcmp(&br->bridge_id, &br->designated_root, 8); |
| 141 | } |
| 142 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | /* br_device.c */ |
| 144 | extern void br_dev_setup(struct net_device *dev); |
Stephen Hemminger | 6fef4c0 | 2009-08-31 19:50:41 +0000 | [diff] [blame] | 145 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
| 146 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
| 148 | /* br_fdb.c */ |
Akinobu Mita | 87a596e | 2007-04-07 18:57:07 +0900 | [diff] [blame] | 149 | extern int br_fdb_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 150 | extern void br_fdb_fini(void); |
Stephen Hemminger | 9cf6374 | 2007-04-09 12:57:54 -0700 | [diff] [blame] | 151 | extern void br_fdb_flush(struct net_bridge *br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 152 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
| 153 | const unsigned char *newaddr); |
| 154 | extern void br_fdb_cleanup(unsigned long arg); |
| 155 | extern void br_fdb_delete_by_port(struct net_bridge *br, |
Stephen Hemminger | 1a62069 | 2006-10-12 14:45:38 -0700 | [diff] [blame] | 156 | const struct net_bridge_port *p, int do_all); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 157 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
| 158 | const unsigned char *addr); |
Michał Mirosław | da67829 | 2009-06-05 05:35:28 +0000 | [diff] [blame] | 159 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
YOSHIFUJI Hideaki | 9d6f229 | 2007-02-09 23:24:35 +0900 | [diff] [blame] | 160 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 161 | unsigned long count, unsigned long off); |
| 162 | extern int br_fdb_insert(struct net_bridge *br, |
| 163 | struct net_bridge_port *source, |
| 164 | const unsigned char *addr); |
| 165 | extern void br_fdb_update(struct net_bridge *br, |
| 166 | struct net_bridge_port *source, |
| 167 | const unsigned char *addr); |
| 168 | |
| 169 | /* br_forward.c */ |
| 170 | extern void br_deliver(const struct net_bridge_port *to, |
| 171 | struct sk_buff *skb); |
| 172 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); |
| 173 | extern void br_forward(const struct net_bridge_port *to, |
| 174 | struct sk_buff *skb); |
| 175 | extern int br_forward_finish(struct sk_buff *skb); |
Herbert Xu | e081e1e | 2007-09-16 16:20:48 -0700 | [diff] [blame] | 176 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
| 177 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 178 | |
| 179 | /* br_if.c */ |
Stephen Hemminger | 269def7 | 2007-02-22 01:10:18 -0800 | [diff] [blame] | 180 | extern void br_port_carrier_check(struct net_bridge_port *p); |
Alexey Dobriyan | 4aa678b | 2008-09-08 16:19:58 -0700 | [diff] [blame] | 181 | extern int br_add_bridge(struct net *net, const char *name); |
| 182 | extern int br_del_bridge(struct net *net, const char *name); |
Alexey Dobriyan | 712d695 | 2008-09-08 16:20:18 -0700 | [diff] [blame] | 183 | extern void br_net_exit(struct net *net); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 184 | extern int br_add_if(struct net_bridge *br, |
| 185 | struct net_device *dev); |
| 186 | extern int br_del_if(struct net_bridge *br, |
| 187 | struct net_device *dev); |
| 188 | extern int br_min_mtu(const struct net_bridge *br); |
Stephen Hemminger | 81d3530 | 2005-05-29 14:15:17 -0700 | [diff] [blame] | 189 | extern void br_features_recompute(struct net_bridge *br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 190 | |
| 191 | /* br_input.c */ |
| 192 | extern int br_handle_frame_finish(struct sk_buff *skb); |
Stephen Hemminger | 6229e36 | 2007-03-21 13:38:47 -0700 | [diff] [blame] | 193 | extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, |
| 194 | struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 195 | |
| 196 | /* br_ioctl.c */ |
| 197 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
Eric W. Biederman | 881d966 | 2007-09-17 11:56:21 -0700 | [diff] [blame] | 198 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 199 | |
| 200 | /* br_netfilter.c */ |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 201 | #ifdef CONFIG_BRIDGE_NETFILTER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 202 | extern int br_netfilter_init(void); |
| 203 | extern void br_netfilter_fini(void); |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 204 | extern void br_netfilter_rtable_init(struct net_bridge *); |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 205 | #else |
| 206 | #define br_netfilter_init() (0) |
| 207 | #define br_netfilter_fini() do { } while(0) |
Simon Wunderlich | 4adf0af | 2008-07-30 16:27:55 -0700 | [diff] [blame] | 208 | #define br_netfilter_rtable_init(x) |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 209 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 210 | |
| 211 | /* br_stp.c */ |
| 212 | extern void br_log_state(const struct net_bridge_port *p); |
| 213 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, |
YOSHIFUJI Hideaki | 9d6f229 | 2007-02-09 23:24:35 +0900 | [diff] [blame] | 214 | u16 port_no); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | extern void br_init_port(struct net_bridge_port *p); |
| 216 | extern void br_become_designated_port(struct net_bridge_port *p); |
| 217 | |
| 218 | /* br_stp_if.c */ |
| 219 | extern void br_stp_enable_bridge(struct net_bridge *br); |
| 220 | extern void br_stp_disable_bridge(struct net_bridge *br); |
Stephen Hemminger | 9cde070 | 2007-03-21 14:22:44 -0700 | [diff] [blame] | 221 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 222 | extern void br_stp_enable_port(struct net_bridge_port *p); |
| 223 | extern void br_stp_disable_port(struct net_bridge_port *p); |
| 224 | extern void br_stp_recalculate_bridge_id(struct net_bridge *br); |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 225 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
| 227 | u16 newprio); |
| 228 | extern void br_stp_set_port_priority(struct net_bridge_port *p, |
| 229 | u8 newprio); |
| 230 | extern void br_stp_set_path_cost(struct net_bridge_port *p, |
| 231 | u32 path_cost); |
| 232 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
| 233 | |
| 234 | /* br_stp_bpdu.c */ |
Patrick McHardy | 7c85fbf | 2008-07-05 21:25:56 -0700 | [diff] [blame] | 235 | struct stp_proto; |
| 236 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, |
| 237 | struct net_device *dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 238 | |
| 239 | /* br_stp_timer.c */ |
| 240 | extern void br_stp_timer_init(struct net_bridge *br); |
| 241 | extern void br_stp_port_timer_init(struct net_bridge_port *p); |
| 242 | extern unsigned long br_timer_value(const struct timer_list *timer); |
| 243 | |
| 244 | /* br.c */ |
Michał Mirosław | da67829 | 2009-06-05 05:35:28 +0000 | [diff] [blame] | 245 | #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) |
| 246 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); |
| 247 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 248 | |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 249 | /* br_netlink.c */ |
Thomas Graf | 32fe21c | 2007-03-22 11:59:03 -0700 | [diff] [blame] | 250 | extern int br_netlink_init(void); |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 251 | extern void br_netlink_fini(void); |
| 252 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); |
| 253 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 254 | #ifdef CONFIG_SYSFS |
| 255 | /* br_sysfs_if.c */ |
Stephen Hemminger | bab1dee | 2006-02-09 17:10:12 -0800 | [diff] [blame] | 256 | extern struct sysfs_ops brport_sysfs_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 257 | extern int br_sysfs_addif(struct net_bridge_port *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | |
| 259 | /* br_sysfs_br.c */ |
| 260 | extern int br_sysfs_addbr(struct net_device *dev); |
| 261 | extern void br_sysfs_delbr(struct net_device *dev); |
| 262 | |
| 263 | #else |
| 264 | |
| 265 | #define br_sysfs_addif(p) (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 266 | #define br_sysfs_addbr(dev) (0) |
| 267 | #define br_sysfs_delbr(dev) do { } while(0) |
| 268 | #endif /* CONFIG_SYSFS */ |
| 269 | |
| 270 | #endif |