1 /*
2 * Linux ethernet bridge
3 *
4 * Authors:
5 * Lennert Buytenhek <buytenh@gnu.org>
6 *
7 * $Id: br_private.h,v 1.3 2000/05/05 02:17:17 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 #include "br_private_timer.h"
22
23 #define BR_HASH_BITS 8
24 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25
26 #define BR_HOLD_TIME (1*HZ)
27
28 typedef struct bridge_id bridge_id;
29 typedef struct mac_addr mac_addr;
30 typedef __u16 port_id;
31
32 struct bridge_id
33 {
34 unsigned char prio[2];
35 unsigned char addr[6];
36 };
37
38 struct mac_addr
39 {
40 unsigned char addr[6];
41 unsigned char pad[2];
42 };
43
44 struct net_bridge_fdb_entry
45 {
46 struct net_bridge_fdb_entry *next_hash;
47 struct net_bridge_fdb_entry **pprev_hash;
48 atomic_t use_count;
49 mac_addr addr;
50 struct net_bridge_port *dst;
51 unsigned long ageing_timer;
52 unsigned is_local:1;
53 unsigned is_static:1;
54 };
55
56 struct net_bridge_port
57 {
58 struct net_bridge_port *next;
59 struct net_bridge *br;
60 struct net_device *dev;
61 int port_no;
62
63 /* STP */
64 port_id port_id;
65 int state;
66 int path_cost;
67 bridge_id designated_root;
68 int designated_cost;
69 bridge_id designated_bridge;
70 port_id designated_port;
71 unsigned topology_change_ack:1;
72 unsigned config_pending:1;
73 int priority;
74
75 struct br_timer forward_delay_timer;
76 struct br_timer hold_timer;
77 struct br_timer message_age_timer;
78 };
79
80 struct net_bridge
81 {
82 struct net_bridge *next;
83 rwlock_t lock;
84 struct net_bridge_port *port_list;
85 struct net_device dev;
86 struct net_device_stats statistics;
87 rwlock_t hash_lock;
88 struct net_bridge_fdb_entry *hash[BR_HASH_SIZE];
89 struct timer_list tick;
90
91 /* STP */
92 bridge_id designated_root;
93 int root_path_cost;
94 int root_port;
95 int max_age;
96 int hello_time;
97 int forward_delay;
98 bridge_id bridge_id;
99 int bridge_max_age;
100 int bridge_hello_time;
101 int bridge_forward_delay;
102 unsigned stp_enabled:1;
103 unsigned topology_change:1;
104 unsigned topology_change_detected:1;
105
106 struct br_timer hello_timer;
107 struct br_timer tcn_timer;
108 struct br_timer topology_change_timer;
109 struct br_timer gc_timer;
110
111 int ageing_time;
112 int gc_interval;
113 };
114
115 struct notifier_block br_device_notifier;
116 unsigned char bridge_ula[6];
117
118 /* br.c */
119 void br_dec_use_count(void);
120 void br_inc_use_count(void);
121
122 /* br_device.c */
123 void br_dev_setup(struct net_device *dev);
124
125 /* br_fdb.c */
126 void br_fdb_changeaddr(struct net_bridge_port *p,
127 unsigned char *newaddr);
128 void br_fdb_cleanup(struct net_bridge *br);
129 void br_fdb_delete_by_port(struct net_bridge *br,
130 struct net_bridge_port *p);
131 struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
132 unsigned char *addr);
133 void br_fdb_put(struct net_bridge_fdb_entry *ent);
134 int br_fdb_get_entries(struct net_bridge *br,
135 unsigned char *_buf,
136 int maxnum,
137 int offset);
138 void br_fdb_insert(struct net_bridge *br,
139 struct net_bridge_port *source,
140 unsigned char *addr,
141 int is_local);
142
143 /* br_forward.c */
144 void br_forward(struct net_bridge_port *to,
145 struct sk_buff *skb);
146 void br_flood(struct net_bridge *br,
147 struct sk_buff *skb,
148 int clone);
149
150 /* br_if.c */
151 int br_add_bridge(char *name);
152 int br_del_bridge(char *name);
153 int br_add_if(struct net_bridge *br,
154 struct net_device *dev);
155 int br_del_if(struct net_bridge *br,
156 struct net_device *dev);
157 int br_get_bridge_ifindices(int *indices,
158 int num);
159 void br_get_port_ifindices(struct net_bridge *br,
160 int *ifindices);
161
162 /* br_input.c */
163 void br_handle_frame(struct sk_buff *skb);
164
165 /* br_ioctl.c */
166 void br_call_ioctl_atomic(void (*fn)(void));
167 int br_ioctl(struct net_bridge *br,
168 unsigned int cmd,
169 unsigned long arg0,
170 unsigned long arg1,
171 unsigned long arg2);
172 int br_ioctl_deviceless_stub(unsigned long arg);
173
174 /* br_stp.c */
175 int br_is_root_bridge(struct net_bridge *br);
176 struct net_bridge_port *br_get_port(struct net_bridge *br,
177 int port_no);
178 void br_init_port(struct net_bridge_port *p);
179 port_id br_make_port_id(struct net_bridge_port *p);
180 void br_become_designated_port(struct net_bridge_port *p);
181
182 /* br_stp_if.c */
183 void br_stp_enable_bridge(struct net_bridge *br);
184 void br_stp_disable_bridge(struct net_bridge *br);
185 void br_stp_enable_port(struct net_bridge_port *p);
186 void br_stp_disable_port(struct net_bridge_port *p);
187 void br_stp_recalculate_bridge_id(struct net_bridge *br);
188 void br_stp_set_bridge_priority(struct net_bridge *br,
189 int newprio);
190 void br_stp_set_port_priority(struct net_bridge_port *p,
191 int newprio);
192 void br_stp_set_path_cost(struct net_bridge_port *p,
193 int path_cost);
194
195 /* br_stp_bpdu.c */
196 void br_stp_handle_bpdu(struct sk_buff *skb);
197
198 #endif
199
This page was automatically generated by the
LXR engine.
Visit the LXR main site for more
information.