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Linux-2.6.12-rc2
[linux-2.6-block.git] / net / bridge / br_private.h
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1da177e4
LT		 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>
19#include <linux/miscdevice.h>
20#include <linux/if_bridge.h>
21
22#define BR_HASH_BITS 8
23#define BR_HASH_SIZE (1 << BR_HASH_BITS)
24
25#define BR_HOLD_TIME (1*HZ)
26
27#define BR_PORT_BITS 10
28#define BR_MAX_PORTS (1<<BR_PORT_BITS)
29
30typedef struct bridge_id bridge_id;
31typedef struct mac_addr mac_addr;
32typedef __u16 port_id;
33
34struct bridge_id
35{
36 unsigned char prio[2];
37 unsigned char addr[6];
38};
39
40struct mac_addr
41{
42 unsigned char addr[6];
43};
44
45struct net_bridge_fdb_entry
46{
47 struct hlist_node hlist;
48 struct net_bridge_port *dst;
49
50 struct rcu_head rcu;
51 atomic_t use_count;
52 unsigned long ageing_timer;
53 mac_addr addr;
54 unsigned char is_local;
55 unsigned char is_static;
56};
57
58struct net_bridge_port
59{
60 struct net_bridge *br;
61 struct net_device *dev;
62 struct list_head list;
63
64 /* STP */
65 u8 priority;
66 u8 state;
67 u16 port_no;
68 unsigned char topology_change_ack;
69 unsigned char config_pending;
70 port_id port_id;
71 port_id designated_port;
72 bridge_id designated_root;
73 bridge_id designated_bridge;
74 u32 path_cost;
75 u32 designated_cost;
76
77 struct timer_list forward_delay_timer;
78 struct timer_list hold_timer;
79 struct timer_list message_age_timer;
80 struct kobject kobj;
81 struct rcu_head rcu;
82};
83
84struct net_bridge
85{
86 spinlock_t lock;
87 struct list_head port_list;
88 struct net_device *dev;
89 struct net_device_stats statistics;
90 spinlock_t hash_lock;
91 struct hlist_head hash[BR_HASH_SIZE];
92 struct list_head age_list;
93
94 /* STP */
95 bridge_id designated_root;
96 bridge_id bridge_id;
97 u32 root_path_cost;
98 unsigned long max_age;
99 unsigned long hello_time;
100 unsigned long forward_delay;
101 unsigned long bridge_max_age;
102 unsigned long ageing_time;
103 unsigned long bridge_hello_time;
104 unsigned long bridge_forward_delay;
105
106 u16 root_port;
107 unsigned char stp_enabled;
108 unsigned char topology_change;
109 unsigned char topology_change_detected;
110
111 struct timer_list hello_timer;
112 struct timer_list tcn_timer;
113 struct timer_list topology_change_timer;
114 struct timer_list gc_timer;
115 struct kobject ifobj;
116};
117
118extern struct notifier_block br_device_notifier;
119extern const unsigned char bridge_ula[6];
120
121/* called under bridge lock */
122static inline int br_is_root_bridge(const struct net_bridge *br)
123{
124 return !memcmp(&br->bridge_id, &br->designated_root, 8);
125}
126
127
128/* br_device.c */
129extern void br_dev_setup(struct net_device *dev);
130extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
131
132/* br_fdb.c */
133extern void br_fdb_init(void);
134extern void br_fdb_fini(void);
135extern void br_fdb_changeaddr(struct net_bridge_port *p,
136 const unsigned char *newaddr);
137extern void br_fdb_cleanup(unsigned long arg);
138extern void br_fdb_delete_by_port(struct net_bridge *br,
139 struct net_bridge_port *p);
140extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
141 const unsigned char *addr);
142extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
143 unsigned char *addr);
144extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
145extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
146 unsigned long count, unsigned long off);
147extern int br_fdb_insert(struct net_bridge *br,
148 struct net_bridge_port *source,
149 const unsigned char *addr);
150extern void br_fdb_update(struct net_bridge *br,
151 struct net_bridge_port *source,
152 const unsigned char *addr);
153
154/* br_forward.c */
155extern void br_deliver(const struct net_bridge_port *to,
156 struct sk_buff *skb);
157extern int br_dev_queue_push_xmit(struct sk_buff *skb);
158extern void br_forward(const struct net_bridge_port *to,
159 struct sk_buff *skb);
160extern int br_forward_finish(struct sk_buff *skb);
161extern void br_flood_deliver(struct net_bridge *br,
162 struct sk_buff *skb,
163 int clone);
164extern void br_flood_forward(struct net_bridge *br,
165 struct sk_buff *skb,
166 int clone);
167
168/* br_if.c */
169extern int br_add_bridge(const char *name);
170extern int br_del_bridge(const char *name);
171extern void br_cleanup_bridges(void);
172extern int br_add_if(struct net_bridge *br,
173 struct net_device *dev);
174extern int br_del_if(struct net_bridge *br,
175 struct net_device *dev);
176extern int br_min_mtu(const struct net_bridge *br);
177
178/* br_input.c */
179extern int br_handle_frame_finish(struct sk_buff *skb);
180extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
181
182/* br_ioctl.c */
183extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
184extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
185
186/* br_netfilter.c */
187extern int br_netfilter_init(void);
188extern void br_netfilter_fini(void);
189
190/* br_stp.c */
191extern void br_log_state(const struct net_bridge_port *p);
192extern struct net_bridge_port *br_get_port(struct net_bridge *br,
193 u16 port_no);
194extern void br_init_port(struct net_bridge_port *p);
195extern void br_become_designated_port(struct net_bridge_port *p);
196
197/* br_stp_if.c */
198extern void br_stp_enable_bridge(struct net_bridge *br);
199extern void br_stp_disable_bridge(struct net_bridge *br);
200extern void br_stp_enable_port(struct net_bridge_port *p);
201extern void br_stp_disable_port(struct net_bridge_port *p);
202extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
203extern void br_stp_set_bridge_priority(struct net_bridge *br,
204 u16 newprio);
205extern void br_stp_set_port_priority(struct net_bridge_port *p,
206 u8 newprio);
207extern void br_stp_set_path_cost(struct net_bridge_port *p,
208 u32 path_cost);
209extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
210
211/* br_stp_bpdu.c */
212extern int br_stp_handle_bpdu(struct sk_buff *skb);
213
214/* br_stp_timer.c */
215extern void br_stp_timer_init(struct net_bridge *br);
216extern void br_stp_port_timer_init(struct net_bridge_port *p);
217extern unsigned long br_timer_value(const struct timer_list *timer);
218
219/* br.c */
220extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
221 unsigned char *addr);
222extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
223
224
225#ifdef CONFIG_SYSFS
226/* br_sysfs_if.c */
227extern int br_sysfs_addif(struct net_bridge_port *p);
228extern void br_sysfs_removeif(struct net_bridge_port *p);
229extern void br_sysfs_freeif(struct net_bridge_port *p);
230
231/* br_sysfs_br.c */
232extern int br_sysfs_addbr(struct net_device *dev);
233extern void br_sysfs_delbr(struct net_device *dev);
234
235#else
236
237#define br_sysfs_addif(p) (0)
238#define br_sysfs_removeif(p) do { } while(0)
239#define br_sysfs_freeif(p) kfree(p)
240#define br_sysfs_addbr(dev) (0)
241#define br_sysfs_delbr(dev) do { } while(0)
242#endif /* CONFIG_SYSFS */
243
244#endif
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