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[BRIDGE]: filter packets in learning state
[deliverable/linux.git] / net / bridge / br_private.h
CommitLineData
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
4433f420
SH		 30#define BR_PORT_DEBOUNCE (HZ/10)
31
1da177e4
LT		 32typedef struct bridge_id bridge_id;
33typedef struct mac_addr mac_addr;
34typedef __u16 port_id;
35
36struct bridge_id
37{
38 unsigned char prio[2];
39 unsigned char addr[6];
40};
41
42struct mac_addr
43{
44 unsigned char addr[6];
45};
46
47struct net_bridge_fdb_entry
48{
49 struct hlist_node hlist;
50 struct net_bridge_port *dst;
51
52 struct rcu_head rcu;
53 atomic_t use_count;
54 unsigned long ageing_timer;
55 mac_addr addr;
56 unsigned char is_local;
57 unsigned char is_static;
58};
59
60struct 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;
4433f420 83 struct work_struct carrier_check;
1da177e4
LT		 84 struct rcu_head rcu;
85};
86
87struct net_bridge
88{
89 spinlock_t lock;
90 struct list_head port_list;
91 struct net_device *dev;
92 struct net_device_stats statistics;
93 spinlock_t hash_lock;
94 struct hlist_head hash[BR_HASH_SIZE];
95 struct list_head age_list;
96
97 /* STP */
98 bridge_id designated_root;
99 bridge_id bridge_id;
100 u32 root_path_cost;
101 unsigned long max_age;
102 unsigned long hello_time;
103 unsigned long forward_delay;
104 unsigned long bridge_max_age;
105 unsigned long ageing_time;
106 unsigned long bridge_hello_time;
107 unsigned long bridge_forward_delay;
108
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
121extern struct notifier_block br_device_notifier;
122extern const unsigned char bridge_ula[6];
123
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,
142 struct net_bridge_port *p);
143extern 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);
148extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
149 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 */
172extern int br_add_bridge(const char *name);
173extern int br_del_bridge(const char *name);
174extern void br_cleanup_bridges(void);
175extern int br_add_if(struct net_bridge *br,
176 struct net_device *dev);
177extern int br_del_if(struct net_bridge *br,
178 struct net_device *dev);
179extern int br_min_mtu(const struct net_bridge *br);
81d35307 180extern void br_features_recompute(struct net_bridge *br);
1da177e4
LT		 181
182/* br_input.c */
183extern int br_handle_frame_finish(struct sk_buff *skb);
184extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
185
186/* br_ioctl.c */
187extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
188extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
189
190/* br_netfilter.c */
191extern int br_netfilter_init(void);
192extern void br_netfilter_fini(void);
193
194/* br_stp.c */
195extern void br_log_state(const struct net_bridge_port *p);
196extern struct net_bridge_port *br_get_port(struct net_bridge *br,
197 u16 port_no);
198extern void br_init_port(struct net_bridge_port *p);
199extern void br_become_designated_port(struct net_bridge_port *p);
200
201/* br_stp_if.c */
202extern void br_stp_enable_bridge(struct net_bridge *br);
203extern void br_stp_disable_bridge(struct net_bridge *br);
204extern void br_stp_enable_port(struct net_bridge_port *p);
205extern void br_stp_disable_port(struct net_bridge_port *p);
206extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef 207extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
1da177e4
LT		 208extern void br_stp_set_bridge_priority(struct net_bridge *br,
209 u16 newprio);
210extern void br_stp_set_port_priority(struct net_bridge_port *p,
211 u8 newprio);
212extern void br_stp_set_path_cost(struct net_bridge_port *p,
213 u32 path_cost);
214extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
215
216/* br_stp_bpdu.c */
217extern int br_stp_handle_bpdu(struct sk_buff *skb);
218
219/* br_stp_timer.c */
220extern void br_stp_timer_init(struct net_bridge *br);
221extern void br_stp_port_timer_init(struct net_bridge_port *p);
222extern unsigned long br_timer_value(const struct timer_list *timer);
223
224/* br.c */
225extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
226 unsigned char *addr);
227extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
228
229
230#ifdef CONFIG_SYSFS
231/* br_sysfs_if.c */
232extern int br_sysfs_addif(struct net_bridge_port *p);
233extern void br_sysfs_removeif(struct net_bridge_port *p);
234extern void br_sysfs_freeif(struct net_bridge_port *p);
235
236/* br_sysfs_br.c */
237extern int br_sysfs_addbr(struct net_device *dev);
238extern void br_sysfs_delbr(struct net_device *dev);
239
240#else
241
242#define br_sysfs_addif(p) (0)
243#define br_sysfs_removeif(p) do { } while(0)
244#define br_sysfs_freeif(p) kfree(p)
245#define br_sysfs_addbr(dev) (0)
246#define br_sysfs_delbr(dev) do { } while(0)
247#endif /* CONFIG_SYSFS */
248
249#endif
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