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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 Hemminger9cde0702007-03-21 14:22:44 -070029#define BR_VERSION "2.3"
30
31/* Path to usermode spanning tree program */
32#define BR_STP_PROG "/sbin/bridge-stp"
Stephen Hemminger8cbb5122005-12-21 19:01:30 -080033
Linus Torvalds1da177e2005-04-16 15:20:36 -070034typedef struct bridge_id bridge_id;
35typedef struct mac_addr mac_addr;
36typedef __u16 port_id;
37
38struct bridge_id
39{
40 unsigned char prio[2];
41 unsigned char addr[6];
42};
43
44struct mac_addr
45{
46 unsigned char addr[6];
47};
48
49struct net_bridge_fdb_entry
50{
51 struct hlist_node hlist;
52 struct net_bridge_port *dst;
53
54 struct rcu_head rcu;
55 atomic_t use_count;
56 unsigned long ageing_timer;
57 mac_addr addr;
58 unsigned char is_local;
59 unsigned char is_static;
60};
61
62struct net_bridge_port
63{
64 struct net_bridge *br;
65 struct net_device *dev;
66 struct list_head list;
67
68 /* STP */
69 u8 priority;
70 u8 state;
71 u16 port_no;
72 unsigned char topology_change_ack;
73 unsigned char config_pending;
74 port_id port_id;
75 port_id designated_port;
76 bridge_id designated_root;
77 bridge_id designated_bridge;
78 u32 path_cost;
79 u32 designated_cost;
80
81 struct timer_list forward_delay_timer;
82 struct timer_list hold_timer;
83 struct timer_list message_age_timer;
84 struct kobject kobj;
85 struct rcu_head rcu;
86};
87
88struct net_bridge
89{
90 spinlock_t lock;
91 struct list_head port_list;
92 struct net_device *dev;
93 struct net_device_stats statistics;
94 spinlock_t hash_lock;
95 struct hlist_head hash[BR_HASH_SIZE];
96 struct list_head age_list;
Stephen Hemmingeredb5e462005-12-21 19:00:58 -080097 unsigned long feature_mask;
Linus Torvalds1da177e2005-04-16 15:20:36 -070098
99 /* STP */
100 bridge_id designated_root;
101 bridge_id bridge_id;
102 u32 root_path_cost;
103 unsigned long max_age;
104 unsigned long hello_time;
105 unsigned long forward_delay;
106 unsigned long bridge_max_age;
107 unsigned long ageing_time;
108 unsigned long bridge_hello_time;
109 unsigned long bridge_forward_delay;
110
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800111 u8 group_addr[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700112 u16 root_port;
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700113
114 enum {
115 BR_NO_STP, /* no spanning tree */
116 BR_KERNEL_STP, /* old STP in kernel */
117 BR_USER_STP, /* new RSTP in userspace */
118 } stp_enabled;
119
Linus Torvalds1da177e2005-04-16 15:20:36 -0700120 unsigned char topology_change;
121 unsigned char topology_change_detected;
122
123 struct timer_list hello_timer;
124 struct timer_list tcn_timer;
125 struct timer_list topology_change_timer;
126 struct timer_list gc_timer;
127 struct kobject ifobj;
128};
129
130extern struct notifier_block br_device_notifier;
Stephen Hemmingerfda93d92006-03-20 22:59:21 -0800131extern const u8 br_group_address[ETH_ALEN];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700132
133/* called under bridge lock */
134static inline int br_is_root_bridge(const struct net_bridge *br)
135{
136 return !memcmp(&br->bridge_id, &br->designated_root, 8);
137}
138
Linus Torvalds1da177e2005-04-16 15:20:36 -0700139/* br_device.c */
140extern void br_dev_setup(struct net_device *dev);
141extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
142
143/* br_fdb.c */
Akinobu Mita87a596e2007-04-07 18:57:07 +0900144extern int br_fdb_init(void);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700145extern void br_fdb_fini(void);
Stephen Hemminger9cf63742007-04-09 12:57:54 -0700146extern void br_fdb_flush(struct net_bridge *br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700147extern void br_fdb_changeaddr(struct net_bridge_port *p,
148 const unsigned char *newaddr);
149extern void br_fdb_cleanup(unsigned long arg);
150extern void br_fdb_delete_by_port(struct net_bridge *br,
Stephen Hemminger1a620692006-10-12 14:45:38 -0700151 const struct net_bridge_port *p, int do_all);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700152extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
153 const unsigned char *addr);
154extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
155 unsigned char *addr);
156extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900157extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
Linus Torvalds1da177e2005-04-16 15:20:36 -0700158 unsigned long count, unsigned long off);
159extern int br_fdb_insert(struct net_bridge *br,
160 struct net_bridge_port *source,
161 const unsigned char *addr);
162extern void br_fdb_update(struct net_bridge *br,
163 struct net_bridge_port *source,
164 const unsigned char *addr);
165
166/* br_forward.c */
167extern void br_deliver(const struct net_bridge_port *to,
168 struct sk_buff *skb);
169extern int br_dev_queue_push_xmit(struct sk_buff *skb);
170extern void br_forward(const struct net_bridge_port *to,
171 struct sk_buff *skb);
172extern int br_forward_finish(struct sk_buff *skb);
173extern void br_flood_deliver(struct net_bridge *br,
174 struct sk_buff *skb,
175 int clone);
176extern void br_flood_forward(struct net_bridge *br,
177 struct sk_buff *skb,
178 int clone);
179
180/* br_if.c */
Stephen Hemminger269def72007-02-22 01:10:18 -0800181extern void br_port_carrier_check(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700182extern int br_add_bridge(const char *name);
183extern int br_del_bridge(const char *name);
184extern void br_cleanup_bridges(void);
185extern int br_add_if(struct net_bridge *br,
186 struct net_device *dev);
187extern int br_del_if(struct net_bridge *br,
188 struct net_device *dev);
189extern int br_min_mtu(const struct net_bridge *br);
Stephen Hemminger81d35302005-05-29 14:15:17 -0700190extern void br_features_recompute(struct net_bridge *br);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191
192/* br_input.c */
193extern int br_handle_frame_finish(struct sk_buff *skb);
Stephen Hemminger6229e362007-03-21 13:38:47 -0700194extern struct sk_buff *br_handle_frame(struct net_bridge_port *p,
195 struct sk_buff *skb);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700196
197/* br_ioctl.c */
198extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
199extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
200
201/* br_netfilter.c */
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700202#ifdef CONFIG_BRIDGE_NETFILTER
Linus Torvalds1da177e2005-04-16 15:20:36 -0700203extern int br_netfilter_init(void);
204extern void br_netfilter_fini(void);
Stephen Hemmingerc0909712006-05-25 15:59:33 -0700205#else
206#define br_netfilter_init() (0)
207#define br_netfilter_fini() do { } while(0)
208#endif
Linus Torvalds1da177e2005-04-16 15:20:36 -0700209
210/* br_stp.c */
211extern void br_log_state(const struct net_bridge_port *p);
212extern struct net_bridge_port *br_get_port(struct net_bridge *br,
YOSHIFUJI Hideaki9d6f2292007-02-09 23:24:35 +0900213 u16 port_no);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214extern void br_init_port(struct net_bridge_port *p);
215extern void br_become_designated_port(struct net_bridge_port *p);
216
217/* br_stp_if.c */
218extern void br_stp_enable_bridge(struct net_bridge *br);
219extern void br_stp_disable_bridge(struct net_bridge *br);
Stephen Hemminger9cde0702007-03-21 14:22:44 -0700220extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700221extern void br_stp_enable_port(struct net_bridge_port *p);
222extern void br_stp_disable_port(struct net_bridge_port *p);
223extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
Stephen Hemminger4505a3e2005-12-21 18:51:49 -0800224extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700225extern void br_stp_set_bridge_priority(struct net_bridge *br,
226 u16 newprio);
227extern void br_stp_set_port_priority(struct net_bridge_port *p,
228 u8 newprio);
229extern void br_stp_set_path_cost(struct net_bridge_port *p,
230 u32 path_cost);
231extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
232
233/* br_stp_bpdu.c */
Stephen Hemmingercf0f02d2006-03-20 22:59:06 -0800234extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
235 struct packet_type *pt, struct net_device *orig_dev);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700236
237/* br_stp_timer.c */
238extern void br_stp_timer_init(struct net_bridge *br);
239extern void br_stp_port_timer_init(struct net_bridge_port *p);
240extern unsigned long br_timer_value(const struct timer_list *timer);
241
242/* br.c */
243extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
244 unsigned char *addr);
245extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
246
247
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700248/* br_netlink.c */
Thomas Graf32fe21c2007-03-22 11:59:03 -0700249extern int br_netlink_init(void);
Stephen Hemminger11dc1f32006-05-25 16:00:12 -0700250extern void br_netlink_fini(void);
251extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
252
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253#ifdef CONFIG_SYSFS
254/* br_sysfs_if.c */
Stephen Hemmingerbab1dee2006-02-09 17:10:12 -0800255extern struct sysfs_ops brport_sysfs_ops;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256extern int br_sysfs_addif(struct net_bridge_port *p);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257
258/* br_sysfs_br.c */
259extern int br_sysfs_addbr(struct net_device *dev);
260extern void br_sysfs_delbr(struct net_device *dev);
261
262#else
263
264#define br_sysfs_addif(p) (0)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700265#define br_sysfs_addbr(dev) (0)
266#define br_sysfs_delbr(dev) do { } while(0)
267#endif /* CONFIG_SYSFS */
268
269#endif