tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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#define BR_PORT_DEBOUNCE (HZ/10)
31
32#define BR_VERSION "2.1"
33
34typedef struct bridge_id bridge_id;
35typedef struct mac_addr mac_addr;
36typedef __u16 port_id;
37
38struct bridge_id
39{
40 unsigned char prio[2];
41 unsigned char addr[6];
42};
43
44struct mac_addr
45{
46 unsigned char addr[6];
47};
48
49struct net_bridge_fdb_entry
50{
51 struct hlist_node hlist;
52 struct net_bridge_port *dst;
53
54 struct rcu_head rcu;
55 atomic_t use_count;
56 unsigned long ageing_timer;
57 mac_addr addr;
58 unsigned char is_local;
59 unsigned char is_static;
60};
61
62struct net_bridge_port
63{
64 struct net_bridge *br;
65 struct net_device *dev;
66 struct list_head list;
67
68 /* STP */
69 u8 priority;
70 u8 state;
71 u16 port_no;
72 unsigned char topology_change_ack;
73 unsigned char config_pending;
74 port_id port_id;
75 port_id designated_port;
76 bridge_id designated_root;
77 bridge_id designated_bridge;
78 u32 path_cost;
79 u32 designated_cost;
80
81 struct timer_list forward_delay_timer;
82 struct timer_list hold_timer;
83 struct timer_list message_age_timer;
84 struct kobject kobj;
85 struct work_struct carrier_check;
86 struct rcu_head rcu;
87};
88
89struct net_bridge
90{
91 spinlock_t lock;
92 struct list_head port_list;
93 struct net_device *dev;
94 struct net_device_stats statistics;
95 spinlock_t hash_lock;
96 struct hlist_head hash[BR_HASH_SIZE];
97 struct list_head age_list;
98 unsigned long feature_mask;
99
100 /* STP */
101 bridge_id designated_root;
102 bridge_id bridge_id;
103 u32 root_path_cost;
104 unsigned long max_age;
105 unsigned long hello_time;
106 unsigned long forward_delay;
107 unsigned long bridge_max_age;
108 unsigned long ageing_time;
109 unsigned long bridge_hello_time;
110 unsigned long bridge_forward_delay;
111
112 u8 group_addr[ETH_ALEN];
113 u16 root_port;
114 unsigned char stp_enabled;
115 unsigned char topology_change;
116 unsigned char topology_change_detected;
117
118 struct timer_list hello_timer;
119 struct timer_list tcn_timer;
120 struct timer_list topology_change_timer;
121 struct timer_list gc_timer;
122 struct kobject ifobj;
123};
124
125extern struct notifier_block br_device_notifier;
126extern const u8 br_group_address[ETH_ALEN];
127
128/* called under bridge lock */
129static inline int br_is_root_bridge(const struct net_bridge *br)
130{
131 return !memcmp(&br->bridge_id, &br->designated_root, 8);
132}
133
134
135/* br_device.c */
136extern void br_dev_setup(struct net_device *dev);
137extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
138
139/* br_fdb.c */
140extern void br_fdb_init(void);
141extern void br_fdb_fini(void);
142extern void br_fdb_changeaddr(struct net_bridge_port *p,
143 const unsigned char *newaddr);
144extern void br_fdb_cleanup(unsigned long arg);
145extern void br_fdb_delete_by_port(struct net_bridge *br,
146 struct net_bridge_port *p);
147extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
148 const unsigned char *addr);
149extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
150 unsigned char *addr);
151extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
152extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
153 unsigned long count, unsigned long off);
154extern int br_fdb_insert(struct net_bridge *br,
155 struct net_bridge_port *source,
156 const unsigned char *addr);
157extern void br_fdb_update(struct net_bridge *br,
158 struct net_bridge_port *source,
159 const unsigned char *addr);
160
161/* br_forward.c */
162extern void br_deliver(const struct net_bridge_port *to,
163 struct sk_buff *skb);
164extern int br_dev_queue_push_xmit(struct sk_buff *skb);
165extern void br_forward(const struct net_bridge_port *to,
166 struct sk_buff *skb);
167extern int br_forward_finish(struct sk_buff *skb);
168extern void br_flood_deliver(struct net_bridge *br,
169 struct sk_buff *skb,
170 int clone);
171extern void br_flood_forward(struct net_bridge *br,
172 struct sk_buff *skb,
173 int clone);
174
175/* br_if.c */
176extern int br_add_bridge(const char *name);
177extern int br_del_bridge(const char *name);
178extern void br_cleanup_bridges(void);
179extern int br_add_if(struct net_bridge *br,
180 struct net_device *dev);
181extern int br_del_if(struct net_bridge *br,
182 struct net_device *dev);
183extern int br_min_mtu(const struct net_bridge *br);
184extern void br_features_recompute(struct net_bridge *br);
185
186/* br_input.c */
187extern int br_handle_frame_finish(struct sk_buff *skb);
188extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb);
189
190/* br_ioctl.c */
191extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
192extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
193
194/* br_netfilter.c */
195extern int br_netfilter_init(void);
196extern void br_netfilter_fini(void);
197
198/* br_stp.c */
199extern void br_log_state(const struct net_bridge_port *p);
200extern struct net_bridge_port *br_get_port(struct net_bridge *br,
201 u16 port_no);
202extern void br_init_port(struct net_bridge_port *p);
203extern void br_become_designated_port(struct net_bridge_port *p);
204
205/* br_stp_if.c */
206extern void br_stp_enable_bridge(struct net_bridge *br);
207extern void br_stp_disable_bridge(struct net_bridge *br);
208extern void br_stp_enable_port(struct net_bridge_port *p);
209extern void br_stp_disable_port(struct net_bridge_port *p);
210extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
211extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
212extern void br_stp_set_bridge_priority(struct net_bridge *br,
213 u16 newprio);
214extern void br_stp_set_port_priority(struct net_bridge_port *p,
215 u8 newprio);
216extern void br_stp_set_path_cost(struct net_bridge_port *p,
217 u32 path_cost);
218extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);
219
220/* br_stp_bpdu.c */
221extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
222 struct packet_type *pt, struct net_device *orig_dev);
223
224/* br_stp_timer.c */
225extern void br_stp_timer_init(struct net_bridge *br);
226extern void br_stp_port_timer_init(struct net_bridge_port *p);
227extern unsigned long br_timer_value(const struct timer_list *timer);
228
229/* br.c */
230extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
231 unsigned char *addr);
232extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);
233
234
235#ifdef CONFIG_SYSFS
236/* br_sysfs_if.c */
237extern struct sysfs_ops brport_sysfs_ops;
238extern int br_sysfs_addif(struct net_bridge_port *p);
239
240/* br_sysfs_br.c */
241extern int br_sysfs_addbr(struct net_device *dev);
242extern void br_sysfs_delbr(struct net_device *dev);
243
244#else
245
246#define br_sysfs_addif(p) (0)
247#define br_sysfs_addbr(dev) (0)
248#define br_sysfs_delbr(dev) do { } while(0)
249#endif /* CONFIG_SYSFS */
250
251#endif