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 | * |
| 7 | * $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $ |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or |
| 10 | * modify it under the terms of the GNU General Public License |
| 11 | * as published by the Free Software Foundation; either version |
| 12 | * 2 of the License, or (at your option) any later version. |
| 13 | */ |
| 14 | |
| 15 | #ifndef _BR_PRIVATE_H |
| 16 | #define _BR_PRIVATE_H |
| 17 | |
| 18 | #include <linux/netdevice.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 19 | #include <linux/if_bridge.h> |
| 20 | |
| 21 | #define BR_HASH_BITS 8 |
| 22 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) |
| 23 | |
| 24 | #define BR_HOLD_TIME (1*HZ) |
| 25 | |
| 26 | #define BR_PORT_BITS 10 |
| 27 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) |
| 28 | |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 29 | #define BR_VERSION "2.2" |
Stephen Hemminger | 8cbb512 | 2005-12-21 19:01:30 -0800 | [diff] [blame] | 30 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 31 | typedef struct bridge_id bridge_id; |
| 32 | typedef struct mac_addr mac_addr; |
| 33 | typedef __u16 port_id; |
| 34 | |
| 35 | struct bridge_id |
| 36 | { |
| 37 | unsigned char prio[2]; |
| 38 | unsigned char addr[6]; |
| 39 | }; |
| 40 | |
| 41 | struct mac_addr |
| 42 | { |
| 43 | unsigned char addr[6]; |
| 44 | }; |
| 45 | |
| 46 | struct net_bridge_fdb_entry |
| 47 | { |
| 48 | struct hlist_node hlist; |
| 49 | struct net_bridge_port *dst; |
| 50 | |
| 51 | struct rcu_head rcu; |
| 52 | atomic_t use_count; |
| 53 | unsigned long ageing_timer; |
| 54 | mac_addr addr; |
| 55 | unsigned char is_local; |
| 56 | unsigned char is_static; |
| 57 | }; |
| 58 | |
| 59 | struct net_bridge_port |
| 60 | { |
| 61 | struct net_bridge *br; |
| 62 | struct net_device *dev; |
| 63 | struct list_head list; |
| 64 | |
| 65 | /* STP */ |
| 66 | u8 priority; |
| 67 | u8 state; |
| 68 | u16 port_no; |
| 69 | unsigned char topology_change_ack; |
| 70 | unsigned char config_pending; |
| 71 | port_id port_id; |
| 72 | port_id designated_port; |
| 73 | bridge_id designated_root; |
| 74 | bridge_id designated_bridge; |
| 75 | u32 path_cost; |
| 76 | u32 designated_cost; |
| 77 | |
| 78 | struct timer_list forward_delay_timer; |
| 79 | struct timer_list hold_timer; |
| 80 | struct timer_list message_age_timer; |
| 81 | struct kobject kobj; |
| 82 | struct rcu_head rcu; |
| 83 | }; |
| 84 | |
| 85 | struct net_bridge |
| 86 | { |
| 87 | spinlock_t lock; |
| 88 | struct list_head port_list; |
| 89 | struct net_device *dev; |
| 90 | struct net_device_stats statistics; |
| 91 | spinlock_t hash_lock; |
| 92 | struct hlist_head hash[BR_HASH_SIZE]; |
| 93 | struct list_head age_list; |
Stephen Hemminger | edb5e46 | 2005-12-21 19:00:58 -0800 | [diff] [blame] | 94 | unsigned long feature_mask; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 95 | |
| 96 | /* STP */ |
| 97 | bridge_id designated_root; |
| 98 | bridge_id bridge_id; |
| 99 | u32 root_path_cost; |
| 100 | unsigned long max_age; |
| 101 | unsigned long hello_time; |
| 102 | unsigned long forward_delay; |
| 103 | unsigned long bridge_max_age; |
| 104 | unsigned long ageing_time; |
| 105 | unsigned long bridge_hello_time; |
| 106 | unsigned long bridge_forward_delay; |
| 107 | |
Stephen Hemminger | fda93d9 | 2006-03-20 22:59:21 -0800 | [diff] [blame] | 108 | u8 group_addr[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 109 | u16 root_port; |
| 110 | unsigned char stp_enabled; |
| 111 | unsigned char topology_change; |
| 112 | unsigned char topology_change_detected; |
| 113 | |
| 114 | struct timer_list hello_timer; |
| 115 | struct timer_list tcn_timer; |
| 116 | struct timer_list topology_change_timer; |
| 117 | struct timer_list gc_timer; |
| 118 | struct kobject ifobj; |
| 119 | }; |
| 120 | |
| 121 | extern struct notifier_block br_device_notifier; |
Stephen Hemminger | fda93d9 | 2006-03-20 22:59:21 -0800 | [diff] [blame] | 122 | extern const u8 br_group_address[ETH_ALEN]; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 123 | |
| 124 | /* called under bridge lock */ |
| 125 | static inline int br_is_root_bridge(const struct net_bridge *br) |
| 126 | { |
| 127 | return !memcmp(&br->bridge_id, &br->designated_root, 8); |
| 128 | } |
| 129 | |
| 130 | |
| 131 | /* br_device.c */ |
| 132 | extern void br_dev_setup(struct net_device *dev); |
| 133 | extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); |
| 134 | |
| 135 | /* br_fdb.c */ |
| 136 | extern void br_fdb_init(void); |
| 137 | extern void br_fdb_fini(void); |
| 138 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
| 139 | const unsigned char *newaddr); |
| 140 | extern void br_fdb_cleanup(unsigned long arg); |
| 141 | extern void br_fdb_delete_by_port(struct net_bridge *br, |
Stephen Hemminger | 1a62069 | 2006-10-12 14:45:38 -0700 | [diff] [blame] | 142 | const struct net_bridge_port *p, int do_all); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 143 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
| 144 | const unsigned char *addr); |
| 145 | extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, |
| 146 | unsigned char *addr); |
| 147 | extern void br_fdb_put(struct net_bridge_fdb_entry *ent); |
YOSHIFUJI Hideaki | 9d6f229 | 2007-02-09 23:24:35 +0900 | [diff] [blame] | 148 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 149 | unsigned long count, unsigned long off); |
| 150 | extern int br_fdb_insert(struct net_bridge *br, |
| 151 | struct net_bridge_port *source, |
| 152 | const unsigned char *addr); |
| 153 | extern void br_fdb_update(struct net_bridge *br, |
| 154 | struct net_bridge_port *source, |
| 155 | const unsigned char *addr); |
| 156 | |
| 157 | /* br_forward.c */ |
| 158 | extern void br_deliver(const struct net_bridge_port *to, |
| 159 | struct sk_buff *skb); |
| 160 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); |
| 161 | extern void br_forward(const struct net_bridge_port *to, |
| 162 | struct sk_buff *skb); |
| 163 | extern int br_forward_finish(struct sk_buff *skb); |
| 164 | extern void br_flood_deliver(struct net_bridge *br, |
| 165 | struct sk_buff *skb, |
| 166 | int clone); |
| 167 | extern void br_flood_forward(struct net_bridge *br, |
| 168 | struct sk_buff *skb, |
| 169 | int clone); |
| 170 | |
| 171 | /* br_if.c */ |
Stephen Hemminger | 269def7 | 2007-02-22 01:10:18 -0800 | [diff] [blame] | 172 | extern void br_port_carrier_check(struct net_bridge_port *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 173 | extern int br_add_bridge(const char *name); |
| 174 | extern int br_del_bridge(const char *name); |
| 175 | extern void br_cleanup_bridges(void); |
| 176 | extern int br_add_if(struct net_bridge *br, |
| 177 | struct net_device *dev); |
| 178 | extern int br_del_if(struct net_bridge *br, |
| 179 | struct net_device *dev); |
| 180 | extern int br_min_mtu(const struct net_bridge *br); |
Stephen Hemminger | 81d3530 | 2005-05-29 14:15:17 -0700 | [diff] [blame] | 181 | extern void br_features_recompute(struct net_bridge *br); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 182 | |
| 183 | /* br_input.c */ |
| 184 | extern int br_handle_frame_finish(struct sk_buff *skb); |
Stephen Hemminger | 6229e36 | 2007-03-21 13:38:47 -0700 | [diff] [blame^] | 185 | extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, |
| 186 | struct sk_buff *skb); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 187 | |
| 188 | /* br_ioctl.c */ |
| 189 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); |
| 190 | extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg); |
| 191 | |
| 192 | /* br_netfilter.c */ |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 193 | #ifdef CONFIG_BRIDGE_NETFILTER |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 194 | extern int br_netfilter_init(void); |
| 195 | extern void br_netfilter_fini(void); |
Stephen Hemminger | c090971 | 2006-05-25 15:59:33 -0700 | [diff] [blame] | 196 | #else |
| 197 | #define br_netfilter_init() (0) |
| 198 | #define br_netfilter_fini() do { } while(0) |
| 199 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 200 | |
| 201 | /* br_stp.c */ |
| 202 | extern void br_log_state(const struct net_bridge_port *p); |
| 203 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, |
YOSHIFUJI Hideaki | 9d6f229 | 2007-02-09 23:24:35 +0900 | [diff] [blame] | 204 | u16 port_no); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 205 | extern void br_init_port(struct net_bridge_port *p); |
| 206 | extern void br_become_designated_port(struct net_bridge_port *p); |
| 207 | |
| 208 | /* br_stp_if.c */ |
| 209 | extern void br_stp_enable_bridge(struct net_bridge *br); |
| 210 | extern void br_stp_disable_bridge(struct net_bridge *br); |
| 211 | extern void br_stp_enable_port(struct net_bridge_port *p); |
| 212 | extern void br_stp_disable_port(struct net_bridge_port *p); |
| 213 | extern void br_stp_recalculate_bridge_id(struct net_bridge *br); |
Stephen Hemminger | 4505a3e | 2005-12-21 18:51:49 -0800 | [diff] [blame] | 214 | 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] | 215 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
| 216 | u16 newprio); |
| 217 | extern void br_stp_set_port_priority(struct net_bridge_port *p, |
| 218 | u8 newprio); |
| 219 | extern void br_stp_set_path_cost(struct net_bridge_port *p, |
| 220 | u32 path_cost); |
| 221 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); |
| 222 | |
| 223 | /* br_stp_bpdu.c */ |
Stephen Hemminger | cf0f02d | 2006-03-20 22:59:06 -0800 | [diff] [blame] | 224 | extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev, |
| 225 | struct packet_type *pt, struct net_device *orig_dev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 226 | |
| 227 | /* br_stp_timer.c */ |
| 228 | extern void br_stp_timer_init(struct net_bridge *br); |
| 229 | extern void br_stp_port_timer_init(struct net_bridge_port *p); |
| 230 | extern unsigned long br_timer_value(const struct timer_list *timer); |
| 231 | |
| 232 | /* br.c */ |
| 233 | extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, |
| 234 | unsigned char *addr); |
| 235 | extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); |
| 236 | |
| 237 | |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 238 | /* br_netlink.c */ |
Thomas Graf | 32fe21c | 2007-03-22 11:59:03 -0700 | [diff] [blame] | 239 | extern int br_netlink_init(void); |
Stephen Hemminger | 11dc1f3 | 2006-05-25 16:00:12 -0700 | [diff] [blame] | 240 | extern void br_netlink_fini(void); |
| 241 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); |
| 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | #ifdef CONFIG_SYSFS |
| 244 | /* br_sysfs_if.c */ |
Stephen Hemminger | bab1dee | 2006-02-09 17:10:12 -0800 | [diff] [blame] | 245 | extern struct sysfs_ops brport_sysfs_ops; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 246 | extern int br_sysfs_addif(struct net_bridge_port *p); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | |
| 248 | /* br_sysfs_br.c */ |
| 249 | extern int br_sysfs_addbr(struct net_device *dev); |
| 250 | extern void br_sysfs_delbr(struct net_device *dev); |
| 251 | |
| 252 | #else |
| 253 | |
| 254 | #define br_sysfs_addif(p) (0) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 255 | #define br_sysfs_addbr(dev) (0) |
| 256 | #define br_sysfs_delbr(dev) do { } while(0) |
| 257 | #endif /* CONFIG_SYSFS */ |
| 258 | |
| 259 | #endif |