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/if_bridge.h>
21 #define BR_HASH_BITS 8
22 #define BR_HASH_SIZE (1 << BR_HASH_BITS)
24 #define BR_HOLD_TIME (1*HZ)
26 #define BR_PORT_BITS 10
27 #define BR_MAX_PORTS (1<<BR_PORT_BITS)
29 #define BR_PORT_DEBOUNCE (HZ/10)
31 #define BR_VERSION "2.2"
33 typedef struct bridge_id bridge_id;
34 typedef struct mac_addr mac_addr;
35 typedef __u16 port_id;
39 unsigned char prio[2];
40 unsigned char addr[6];
45 unsigned char addr[6];
48 struct net_bridge_fdb_entry
50 struct hlist_node hlist;
51 struct net_bridge_port *dst;
55 unsigned long ageing_timer;
57 unsigned char is_local;
58 unsigned char is_static;
61 struct net_bridge_port
63 struct net_bridge *br;
64 struct net_device *dev;
65 struct list_head list;
71 unsigned char topology_change_ack;
72 unsigned char config_pending;
74 port_id designated_port;
75 bridge_id designated_root;
76 bridge_id designated_bridge;
80 struct timer_list forward_delay_timer;
81 struct timer_list hold_timer;
82 struct timer_list message_age_timer;
84 struct delayed_work carrier_check;
91 struct list_head port_list;
92 struct net_device *dev;
93 struct net_device_stats statistics;
95 struct hlist_head hash[BR_HASH_SIZE];
96 struct list_head age_list;
97 unsigned long feature_mask;
100 bridge_id designated_root;
103 unsigned long max_age;
104 unsigned long hello_time;
105 unsigned long forward_delay;
106 unsigned long bridge_max_age;
107 unsigned long ageing_time;
108 unsigned long bridge_hello_time;
109 unsigned long bridge_forward_delay;
111 u8 group_addr[ETH_ALEN];
113 unsigned char stp_enabled;
114 unsigned char topology_change;
115 unsigned char topology_change_detected;
117 struct timer_list hello_timer;
118 struct timer_list tcn_timer;
119 struct timer_list topology_change_timer;
120 struct timer_list gc_timer;
121 struct kobject ifobj;
124 extern struct notifier_block br_device_notifier;
125 extern const u8 br_group_address[ETH_ALEN];
127 /* called under bridge lock */
128 static inline int br_is_root_bridge(const struct net_bridge *br)
130 return !memcmp(&br->bridge_id, &br->designated_root, 8);
135 extern void br_dev_setup(struct net_device *dev);
136 extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
139 extern void br_fdb_init(void);
140 extern void br_fdb_fini(void);
141 extern void br_fdb_changeaddr(struct net_bridge_port *p,
142 const unsigned char *newaddr);
143 extern void br_fdb_cleanup(unsigned long arg);
144 extern void br_fdb_delete_by_port(struct net_bridge *br,
145 const struct net_bridge_port *p, int do_all);
146 extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
147 const unsigned char *addr);
148 extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
149 unsigned char *addr);
150 extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
151 extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
152 unsigned long count, unsigned long off);
153 extern int br_fdb_insert(struct net_bridge *br,
154 struct net_bridge_port *source,
155 const unsigned char *addr);
156 extern void br_fdb_update(struct net_bridge *br,
157 struct net_bridge_port *source,
158 const unsigned char *addr);
161 extern void br_deliver(const struct net_bridge_port *to,
162 struct sk_buff *skb);
163 extern int br_dev_queue_push_xmit(struct sk_buff *skb);
164 extern void br_forward(const struct net_bridge_port *to,
165 struct sk_buff *skb);
166 extern int br_forward_finish(struct sk_buff *skb);
167 extern void br_flood_deliver(struct net_bridge *br,
170 extern void br_flood_forward(struct net_bridge *br,
175 extern int br_add_bridge(const char *name);
176 extern int br_del_bridge(const char *name);
177 extern void br_cleanup_bridges(void);
178 extern int br_add_if(struct net_bridge *br,
179 struct net_device *dev);
180 extern int br_del_if(struct net_bridge *br,
181 struct net_device *dev);
182 extern int br_min_mtu(const struct net_bridge *br);
183 extern void br_features_recompute(struct net_bridge *br);
186 extern int br_handle_frame_finish(struct sk_buff *skb);
187 extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
190 extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
191 extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
194 #ifdef CONFIG_BRIDGE_NETFILTER
195 extern int br_netfilter_init(void);
196 extern void br_netfilter_fini(void);
198 #define br_netfilter_init() (0)
199 #define br_netfilter_fini() do { } while(0)
203 extern void br_log_state(const struct net_bridge_port *p);
204 extern struct net_bridge_port *br_get_port(struct net_bridge *br,
206 extern void br_init_port(struct net_bridge_port *p);
207 extern void br_become_designated_port(struct net_bridge_port *p);
210 extern void br_stp_enable_bridge(struct net_bridge *br);
211 extern void br_stp_disable_bridge(struct net_bridge *br);
212 extern void br_stp_enable_port(struct net_bridge_port *p);
213 extern void br_stp_disable_port(struct net_bridge_port *p);
214 extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
215 extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
216 extern void br_stp_set_bridge_priority(struct net_bridge *br,
218 extern void br_stp_set_port_priority(struct net_bridge_port *p,
220 extern void br_stp_set_path_cost(struct net_bridge_port *p,
222 extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
225 extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
226 struct packet_type *pt, struct net_device *orig_dev);
229 extern void br_stp_timer_init(struct net_bridge *br);
230 extern void br_stp_port_timer_init(struct net_bridge_port *p);
231 extern unsigned long br_timer_value(const struct timer_list *timer);
234 extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
235 unsigned char *addr);
236 extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
240 extern void br_netlink_init(void);
241 extern void br_netlink_fini(void);
242 extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
246 extern struct sysfs_ops brport_sysfs_ops;
247 extern int br_sysfs_addif(struct net_bridge_port *p);
250 extern int br_sysfs_addbr(struct net_device *dev);
251 extern void br_sysfs_delbr(struct net_device *dev);
255 #define br_sysfs_addif(p) (0)
256 #define br_sysfs_addbr(dev) (0)
257 #define br_sysfs_delbr(dev) do { } while(0)
258 #endif /* CONFIG_SYSFS */