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Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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 Torvalds1da177e2005-04-16 15:20:36 -070019#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 Hemminger11dc1f32006-05-25 16:00:12 -070029#define BR_VERSION "2.2"
Stephen Hemminger8cbb5122005-12-21 19:01:30 -080030
Linus Torvalds1da177e2005-04-16 15:20:36 -070031typedef struct bridge_id bridge_id;
32typedef struct mac_addr mac_addr;
33typedef __u16 port_id;
34
35struct bridge_id
36{
37 unsigned char prio[2];
38 unsigned char addr[6];
39};
40
41struct mac_addr
42{
43 unsigned char addr[6];
44};
45
46struct 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
59struct 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
85struct 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 Hemmingeredb5e462005-12-21 19:00:58 -080094 unsigned long feature_mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -070095
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 Hemmingerfda93d92006-03-20 22:59:21 -0800108 u8 group_addr[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109 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
121extern struct notifier_block br_device_notifier;
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800122extern const u8 br_group_address[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700123
124/* called under bridge lock */
125static 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 */
132extern void br_dev_setup(struct net_device *dev);
133extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
134
135/* br_fdb.c */
136extern void br_fdb_init(void);
137extern void br_fdb_fini(void);
138extern void br_fdb_changeaddr(struct net_bridge_port *p,
139 const unsigned char *newaddr);
140extern void br_fdb_cleanup(unsigned long arg);
141extern void br_fdb_delete_by_port(struct net_bridge *br,
Stephen Hemminger1a620692006-10-12 14:45:38 -0700142 const struct net_bridge_port *p, int do_all);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700143extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
144 const unsigned char *addr);
145extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
146 unsigned char *addr);
147extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900148extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700149 unsigned long count, unsigned long off);
150extern int br_fdb_insert(struct net_bridge *br,
151 struct net_bridge_port *source,
152 const unsigned char *addr);
153extern void br_fdb_update(struct net_bridge *br,
154 struct net_bridge_port *source,
155 const unsigned char *addr);
156
157/* br_forward.c */
158extern void br_deliver(const struct net_bridge_port *to,
159 struct sk_buff *skb);
160extern int br_dev_queue_push_xmit(struct sk_buff *skb);
161extern void br_forward(const struct net_bridge_port *to,
162 struct sk_buff *skb);
163extern int br_forward_finish(struct sk_buff *skb);
164extern void br_flood_deliver(struct net_bridge *br,
165 struct sk_buff *skb,
166 int clone);
167extern void br_flood_forward(struct net_bridge *br,
168 struct sk_buff *skb,
169 int clone);
170
171/* br_if.c */
Stephen Hemminger269def72007-02-22 01:10:18 -0800172extern void br_port_carrier_check(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700173extern int br_add_bridge(const char *name);
174extern int br_del_bridge(const char *name);
175extern void br_cleanup_bridges(void);
176extern int br_add_if(struct net_bridge *br,
177 struct net_device *dev);
178extern int br_del_if(struct net_bridge *br,
179 struct net_device *dev);
180extern int br_min_mtu(const struct net_bridge *br);
Stephen Hemminger81d35302005-05-29 14:15:17 -0700181extern void br_features_recompute(struct net_bridge *br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182
183/* br_input.c */
184extern int br_handle_frame_finish(struct sk_buff *skb);
185extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
186
187/* br_ioctl.c */
188extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
189extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
190
191/* br_netfilter.c */
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700192#ifdef CONFIG_BRIDGE_NETFILTER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700193extern int br_netfilter_init(void);
194extern void br_netfilter_fini(void);
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700195#else
196#define br_netfilter_init() (0)
197#define br_netfilter_fini() do { } while(0)
198#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700199
200/* br_stp.c */
201extern void br_log_state(const struct net_bridge_port *p);
202extern struct net_bridge_port *br_get_port(struct net_bridge *br,
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900203 u16 port_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700204extern void br_init_port(struct net_bridge_port *p);
205extern void br_become_designated_port(struct net_bridge_port *p);
206
207/* br_stp_if.c */
208extern void br_stp_enable_bridge(struct net_bridge *br);
209extern void br_stp_disable_bridge(struct net_bridge *br);
210extern void br_stp_enable_port(struct net_bridge_port *p);
211extern void br_stp_disable_port(struct net_bridge_port *p);
212extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800213extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214extern void br_stp_set_bridge_priority(struct net_bridge *br,
215 u16 newprio);
216extern void br_stp_set_port_priority(struct net_bridge_port *p,
217 u8 newprio);
218extern void br_stp_set_path_cost(struct net_bridge_port *p,
219 u32 path_cost);
220extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
221
222/* br_stp_bpdu.c */
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -0800223extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
224 struct packet_type *pt, struct net_device *orig_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225
226/* br_stp_timer.c */
227extern void br_stp_timer_init(struct net_bridge *br);
228extern void br_stp_port_timer_init(struct net_bridge_port *p);
229extern unsigned long br_timer_value(const struct timer_list *timer);
230
231/* br.c */
232extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
233 unsigned char *addr);
234extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
235
236
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700237/* br_netlink.c */
Thomas Graf32fe21c2007-03-22 11:59:03 -0700238extern int br_netlink_init(void);
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700239extern void br_netlink_fini(void);
240extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
241
Linus Torvalds1da177e2005-04-16 15:20:36 -0700242#ifdef CONFIG_SYSFS
243/* br_sysfs_if.c */
Stephen Hemmingerbab1dee2006-02-09 17:10:12 -0800244extern struct sysfs_ops brport_sysfs_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700245extern int br_sysfs_addif(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246
247/* br_sysfs_br.c */
248extern int br_sysfs_addbr(struct net_device *dev);
249extern void br_sysfs_delbr(struct net_device *dev);
250
251#else
252
253#define br_sysfs_addif(p) (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254#define br_sysfs_addbr(dev) (0)
255#define br_sysfs_delbr(dev) do { } while(0)
256#endif /* CONFIG_SYSFS */
257
258#endif