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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 | ||
30 | typedef struct bridge_id bridge_id; | |
31 | typedef struct mac_addr mac_addr; | |
32 | typedef __u16 port_id; | |
33 | ||
34 | struct bridge_id | |
35 | { | |
36 | unsigned char prio[2]; | |
37 | unsigned char addr[6]; | |
38 | }; | |
39 | ||
40 | struct mac_addr | |
41 | { | |
42 | unsigned char addr[6]; | |
43 | }; | |
44 | ||
45 | struct 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 | ||
58 | struct 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 | ||
84 | struct 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 | ||
118 | extern struct notifier_block br_device_notifier; | |
119 | extern const unsigned char bridge_ula[6]; | |
120 | ||
121 | /* called under bridge lock */ | |
122 | static 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 */ | |
129 | extern void br_dev_setup(struct net_device *dev); | |
130 | extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); | |
131 | ||
132 | /* br_fdb.c */ | |
133 | extern void br_fdb_init(void); | |
134 | extern void br_fdb_fini(void); | |
135 | extern void br_fdb_changeaddr(struct net_bridge_port *p, | |
136 | const unsigned char *newaddr); | |
137 | extern void br_fdb_cleanup(unsigned long arg); | |
138 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
139 | struct net_bridge_port *p); | |
140 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, | |
141 | const unsigned char *addr); | |
142 | extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, | |
143 | unsigned char *addr); | |
144 | extern void br_fdb_put(struct net_bridge_fdb_entry *ent); | |
145 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, | |
146 | unsigned long count, unsigned long off); | |
147 | extern int br_fdb_insert(struct net_bridge *br, | |
148 | struct net_bridge_port *source, | |
149 | const unsigned char *addr); | |
150 | extern void br_fdb_update(struct net_bridge *br, | |
151 | struct net_bridge_port *source, | |
152 | const unsigned char *addr); | |
153 | ||
154 | /* br_forward.c */ | |
155 | extern void br_deliver(const struct net_bridge_port *to, | |
156 | struct sk_buff *skb); | |
157 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
158 | extern void br_forward(const struct net_bridge_port *to, | |
159 | struct sk_buff *skb); | |
160 | extern int br_forward_finish(struct sk_buff *skb); | |
161 | extern void br_flood_deliver(struct net_bridge *br, | |
162 | struct sk_buff *skb, | |
163 | int clone); | |
164 | extern void br_flood_forward(struct net_bridge *br, | |
165 | struct sk_buff *skb, | |
166 | int clone); | |
167 | ||
168 | /* br_if.c */ | |
169 | extern int br_add_bridge(const char *name); | |
170 | extern int br_del_bridge(const char *name); | |
171 | extern void br_cleanup_bridges(void); | |
172 | extern int br_add_if(struct net_bridge *br, | |
173 | struct net_device *dev); | |
174 | extern int br_del_if(struct net_bridge *br, | |
175 | struct net_device *dev); | |
176 | extern int br_min_mtu(const struct net_bridge *br); | |
177 | ||
178 | /* br_input.c */ | |
179 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
180 | extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb); | |
181 | ||
182 | /* br_ioctl.c */ | |
183 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
184 | extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg); | |
185 | ||
186 | /* br_netfilter.c */ | |
187 | extern int br_netfilter_init(void); | |
188 | extern void br_netfilter_fini(void); | |
189 | ||
190 | /* br_stp.c */ | |
191 | extern void br_log_state(const struct net_bridge_port *p); | |
192 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
193 | u16 port_no); | |
194 | extern void br_init_port(struct net_bridge_port *p); | |
195 | extern void br_become_designated_port(struct net_bridge_port *p); | |
196 | ||
197 | /* br_stp_if.c */ | |
198 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
199 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
200 | extern void br_stp_enable_port(struct net_bridge_port *p); | |
201 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
202 | extern void br_stp_recalculate_bridge_id(struct net_bridge *br); | |
203 | extern void br_stp_set_bridge_priority(struct net_bridge *br, | |
204 | u16 newprio); | |
205 | extern void br_stp_set_port_priority(struct net_bridge_port *p, | |
206 | u8 newprio); | |
207 | extern void br_stp_set_path_cost(struct net_bridge_port *p, | |
208 | u32 path_cost); | |
209 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
210 | ||
211 | /* br_stp_bpdu.c */ | |
212 | extern int br_stp_handle_bpdu(struct sk_buff *skb); | |
213 | ||
214 | /* br_stp_timer.c */ | |
215 | extern void br_stp_timer_init(struct net_bridge *br); | |
216 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
217 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
218 | ||
219 | /* br.c */ | |
220 | extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, | |
221 | unsigned char *addr); | |
222 | extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); | |
223 | ||
224 | ||
225 | #ifdef CONFIG_SYSFS | |
226 | /* br_sysfs_if.c */ | |
227 | extern int br_sysfs_addif(struct net_bridge_port *p); | |
228 | extern void br_sysfs_removeif(struct net_bridge_port *p); | |
229 | extern void br_sysfs_freeif(struct net_bridge_port *p); | |
230 | ||
231 | /* br_sysfs_br.c */ | |
232 | extern int br_sysfs_addbr(struct net_device *dev); | |
233 | extern 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 |