2 * Linux ethernet bridge
5 * Lennert Buytenhek <buytenh@gnu.org>
7 * $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $
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.
18 #include <linux/netdevice.h>
19 #include <linux/miscdevice.h>
20 #include <linux/if_bridge.h>
22 #define BR_HASH_BITS 8
23 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
25 #define BR_HOLD_TIME (1*HZ)
27 #define BR_PORT_BITS 10
28 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
30 typedef struct bridge_id bridge_id;
31 typedef struct mac_addr mac_addr;
32 typedef __u16 port_id;
36 unsigned char prio[2];
37 unsigned char addr[6];
42 unsigned char addr[6];
45 struct net_bridge_fdb_entry
47 struct hlist_node hlist;
48 struct net_bridge_port *dst;
49 struct list_head age_list;
51 unsigned long ageing_timer;
53 unsigned char is_local;
54 unsigned char is_static;
57 struct net_bridge_port
59 struct net_bridge *br;
60 struct net_device *dev;
61 struct list_head list;
67 unsigned char topology_change_ack;
68 unsigned char config_pending;
70 port_id designated_port;
71 bridge_id designated_root;
72 bridge_id designated_bridge;
76 struct timer_list forward_delay_timer;
77 struct timer_list hold_timer;
78 struct timer_list message_age_timer;
86 struct list_head port_list;
87 struct net_device *dev;
88 struct net_device_stats statistics;
90 struct hlist_head hash[BR_HASH_SIZE];
91 struct list_head age_list;
94 bridge_id designated_root;
97 unsigned long max_age;
98 unsigned long hello_time;
99 unsigned long forward_delay;
100 unsigned long bridge_max_age;
101 unsigned long ageing_time;
102 unsigned long bridge_hello_time;
103 unsigned long bridge_forward_delay;
106 unsigned char stp_enabled;
107 unsigned char topology_change;
108 unsigned char topology_change_detected;
110 struct timer_list hello_timer;
111 struct timer_list tcn_timer;
112 struct timer_list topology_change_timer;
113 struct timer_list gc_timer;
114 struct kobject ifobj;
117 extern struct notifier_block br_device_notifier;
118 extern const unsigned char bridge_ula[6];
120 /* called under bridge lock */
121 static inline int br_is_root_bridge(const struct net_bridge *br)
123 return !memcmp(&br->bridge_id, &br->designated_root, 8);
128 extern void br_dev_setup(struct net_device *dev);
129 extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
132 extern void br_fdb_init(void);
133 extern void br_fdb_fini(void);
134 extern void br_fdb_changeaddr(struct net_bridge_port *p,
135 const unsigned char *newaddr);
136 extern void br_fdb_cleanup(unsigned long arg);
137 extern void br_fdb_delete_by_port(struct net_bridge *br,
138 struct net_bridge_port *p);
139 extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
140 unsigned char *addr);
141 extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
142 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
143 unsigned long count, unsigned long off);
144 extern int br_fdb_insert(struct net_bridge *br,
145 struct net_bridge_port *source,
146 const unsigned char *addr,
150 extern void br_deliver(const struct net_bridge_port *to,
151 struct sk_buff *skb);
152 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
153 extern void br_forward(const struct net_bridge_port *to,
154 struct sk_buff *skb);
155 extern int br_forward_finish(struct sk_buff *skb);
156 extern void br_flood_deliver(struct net_bridge *br,
159 extern void br_flood_forward(struct net_bridge *br,
164 extern int br_add_bridge(const char *name);
165 extern int br_del_bridge(const char *name);
166 extern void br_cleanup_bridges(void);
167 extern int br_add_if(struct net_bridge *br,
168 struct net_device *dev);
169 extern int br_del_if(struct net_bridge *br,
170 struct net_device *dev);
171 extern int br_min_mtu(const struct net_bridge *br);
174 extern int br_handle_frame_finish(struct sk_buff *skb);
175 extern int br_handle_frame(struct sk_buff *skb);
178 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
179 extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
182 extern int br_netfilter_init(void);
183 extern void br_netfilter_fini(void);
186 extern void br_log_state(const struct net_bridge_port *p);
187 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
189 extern void br_init_port(struct net_bridge_port *p);
190 extern void br_become_designated_port(struct net_bridge_port *p);
193 extern void br_stp_enable_bridge(struct net_bridge *br);
194 extern void br_stp_disable_bridge(struct net_bridge *br);
195 extern void br_stp_enable_port(struct net_bridge_port *p);
196 extern void br_stp_disable_port(struct net_bridge_port *p);
197 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
198 extern void br_stp_set_bridge_priority(struct net_bridge *br,
200 extern void br_stp_set_port_priority(struct net_bridge_port *p,
202 extern void br_stp_set_path_cost(struct net_bridge_port *p,
204 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
207 extern int br_stp_handle_bpdu(struct sk_buff *skb);
210 extern void br_stp_timer_init(struct net_bridge *br);
211 extern void br_stp_port_timer_init(struct net_bridge_port *p);
212 extern unsigned long br_timer_value(const struct timer_list *timer);
216 extern int br_sysfs_addif(struct net_bridge_port *p);
217 extern void br_sysfs_removeif(struct net_bridge_port *p);
218 extern void br_sysfs_freeif(struct net_bridge_port *p);
221 extern int br_sysfs_addbr(struct net_device *dev);
222 extern void br_sysfs_delbr(struct net_device *dev);
226 #define br_sysfs_addif(p) (0)
227 #define br_sysfs_removeif(p) do { } while(0)
228 #define br_sysfs_freeif(p) kfree(p)
229 #define br_sysfs_addbr(dev) (0)
230 #define br_sysfs_delbr(dev) do { } while(0)
231 #endif /* CONFIG_SYSFS */