Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Linux ethernet bridge | |
3 | * | |
4 | * Authors: | |
5 | * Lennert Buytenhek <buytenh@gnu.org> | |
6 | * | |
1da177e4 LT |
7 | * This program is free software; you can redistribute it and/or |
8 | * modify it under the terms of the GNU General Public License | |
9 | * as published by the Free Software Foundation; either version | |
10 | * 2 of the License, or (at your option) any later version. | |
11 | */ | |
12 | ||
13 | #ifndef _BR_PRIVATE_H | |
14 | #define _BR_PRIVATE_H | |
15 | ||
16 | #include <linux/netdevice.h> | |
1da177e4 | 17 | #include <linux/if_bridge.h> |
4adf0af6 | 18 | #include <net/route.h> |
1da177e4 LT |
19 | |
20 | #define BR_HASH_BITS 8 | |
21 | #define BR_HASH_SIZE (1 << BR_HASH_BITS) | |
22 | ||
23 | #define BR_HOLD_TIME (1*HZ) | |
24 | ||
25 | #define BR_PORT_BITS 10 | |
26 | #define BR_MAX_PORTS (1<<BR_PORT_BITS) | |
27 | ||
9cde0708 SH |
28 | #define BR_VERSION "2.3" |
29 | ||
30 | /* Path to usermode spanning tree program */ | |
31 | #define BR_STP_PROG "/sbin/bridge-stp" | |
8cbb512e | 32 | |
1da177e4 LT |
33 | typedef struct bridge_id bridge_id; |
34 | typedef struct mac_addr mac_addr; | |
35 | typedef __u16 port_id; | |
36 | ||
37 | struct bridge_id | |
38 | { | |
39 | unsigned char prio[2]; | |
40 | unsigned char addr[6]; | |
41 | }; | |
42 | ||
43 | struct mac_addr | |
44 | { | |
45 | unsigned char addr[6]; | |
46 | }; | |
47 | ||
48 | struct net_bridge_fdb_entry | |
49 | { | |
50 | struct hlist_node hlist; | |
51 | struct net_bridge_port *dst; | |
52 | ||
53 | struct rcu_head rcu; | |
1da177e4 LT |
54 | unsigned long ageing_timer; |
55 | mac_addr addr; | |
56 | unsigned char is_local; | |
57 | unsigned char is_static; | |
58 | }; | |
59 | ||
60 | struct net_bridge_port | |
61 | { | |
62 | struct net_bridge *br; | |
63 | struct net_device *dev; | |
64 | struct list_head list; | |
65 | ||
66 | /* STP */ | |
67 | u8 priority; | |
68 | u8 state; | |
69 | u16 port_no; | |
70 | unsigned char topology_change_ack; | |
71 | unsigned char config_pending; | |
72 | port_id port_id; | |
73 | port_id designated_port; | |
74 | bridge_id designated_root; | |
75 | bridge_id designated_bridge; | |
76 | u32 path_cost; | |
77 | u32 designated_cost; | |
78 | ||
79 | struct timer_list forward_delay_timer; | |
80 | struct timer_list hold_timer; | |
81 | struct timer_list message_age_timer; | |
82 | struct kobject kobj; | |
83 | struct rcu_head rcu; | |
3982d3d2 FA |
84 | |
85 | unsigned long flags; | |
86 | #define BR_HAIRPIN_MODE 0x00000001 | |
1da177e4 LT |
87 | }; |
88 | ||
89 | struct net_bridge | |
90 | { | |
91 | spinlock_t lock; | |
92 | struct list_head port_list; | |
93 | struct net_device *dev; | |
1da177e4 LT |
94 | spinlock_t hash_lock; |
95 | struct hlist_head hash[BR_HASH_SIZE]; | |
96 | struct list_head age_list; | |
edb5e46f | 97 | unsigned long feature_mask; |
4adf0af6 SW |
98 | #ifdef CONFIG_BRIDGE_NETFILTER |
99 | struct rtable fake_rtable; | |
100 | #endif | |
92c0574f SH |
101 | unsigned long flags; |
102 | #define BR_SET_MAC_ADDR 0x00000001 | |
1da177e4 LT |
103 | |
104 | /* STP */ | |
105 | bridge_id designated_root; | |
106 | bridge_id bridge_id; | |
107 | u32 root_path_cost; | |
108 | unsigned long max_age; | |
109 | unsigned long hello_time; | |
110 | unsigned long forward_delay; | |
111 | unsigned long bridge_max_age; | |
112 | unsigned long ageing_time; | |
113 | unsigned long bridge_hello_time; | |
114 | unsigned long bridge_forward_delay; | |
115 | ||
fda93d92 | 116 | u8 group_addr[ETH_ALEN]; |
1da177e4 | 117 | u16 root_port; |
9cde0708 SH |
118 | |
119 | enum { | |
120 | BR_NO_STP, /* no spanning tree */ | |
121 | BR_KERNEL_STP, /* old STP in kernel */ | |
122 | BR_USER_STP, /* new RSTP in userspace */ | |
123 | } stp_enabled; | |
124 | ||
1da177e4 LT |
125 | unsigned char topology_change; |
126 | unsigned char topology_change_detected; | |
127 | ||
128 | struct timer_list hello_timer; | |
129 | struct timer_list tcn_timer; | |
130 | struct timer_list topology_change_timer; | |
131 | struct timer_list gc_timer; | |
43b98c4a | 132 | struct kobject *ifobj; |
1da177e4 LT |
133 | }; |
134 | ||
135 | extern struct notifier_block br_device_notifier; | |
fda93d92 | 136 | extern const u8 br_group_address[ETH_ALEN]; |
1da177e4 LT |
137 | |
138 | /* called under bridge lock */ | |
139 | static inline int br_is_root_bridge(const struct net_bridge *br) | |
140 | { | |
141 | return !memcmp(&br->bridge_id, &br->designated_root, 8); | |
142 | } | |
143 | ||
1da177e4 LT |
144 | /* br_device.c */ |
145 | extern void br_dev_setup(struct net_device *dev); | |
6fef4c0c SH |
146 | extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, |
147 | struct net_device *dev); | |
1da177e4 LT |
148 | |
149 | /* br_fdb.c */ | |
87a596e0 | 150 | extern int br_fdb_init(void); |
1da177e4 | 151 | extern void br_fdb_fini(void); |
9cf63747 | 152 | extern void br_fdb_flush(struct net_bridge *br); |
1da177e4 LT |
153 | extern void br_fdb_changeaddr(struct net_bridge_port *p, |
154 | const unsigned char *newaddr); | |
155 | extern void br_fdb_cleanup(unsigned long arg); | |
156 | extern void br_fdb_delete_by_port(struct net_bridge *br, | |
1a620698 | 157 | const struct net_bridge_port *p, int do_all); |
1da177e4 LT |
158 | extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, |
159 | const unsigned char *addr); | |
da678292 | 160 | extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); |
9d6f229f | 161 | extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, |
1da177e4 LT |
162 | unsigned long count, unsigned long off); |
163 | extern int br_fdb_insert(struct net_bridge *br, | |
164 | struct net_bridge_port *source, | |
165 | const unsigned char *addr); | |
166 | extern void br_fdb_update(struct net_bridge *br, | |
167 | struct net_bridge_port *source, | |
168 | const unsigned char *addr); | |
169 | ||
170 | /* br_forward.c */ | |
171 | extern void br_deliver(const struct net_bridge_port *to, | |
172 | struct sk_buff *skb); | |
173 | extern int br_dev_queue_push_xmit(struct sk_buff *skb); | |
174 | extern void br_forward(const struct net_bridge_port *to, | |
175 | struct sk_buff *skb); | |
176 | extern int br_forward_finish(struct sk_buff *skb); | |
e081e1e3 HX |
177 | extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); |
178 | extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb); | |
1da177e4 LT |
179 | |
180 | /* br_if.c */ | |
269def7c | 181 | extern void br_port_carrier_check(struct net_bridge_port *p); |
4aa678ba AD |
182 | extern int br_add_bridge(struct net *net, const char *name); |
183 | extern int br_del_bridge(struct net *net, const char *name); | |
712d6954 | 184 | extern void br_net_exit(struct net *net); |
1da177e4 LT |
185 | extern int br_add_if(struct net_bridge *br, |
186 | struct net_device *dev); | |
187 | extern int br_del_if(struct net_bridge *br, | |
188 | struct net_device *dev); | |
189 | extern int br_min_mtu(const struct net_bridge *br); | |
81d35307 | 190 | extern void br_features_recompute(struct net_bridge *br); |
1da177e4 LT |
191 | |
192 | /* br_input.c */ | |
193 | extern int br_handle_frame_finish(struct sk_buff *skb); | |
6229e362 SH |
194 | extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, |
195 | struct sk_buff *skb); | |
1da177e4 LT |
196 | |
197 | /* br_ioctl.c */ | |
198 | extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); | |
881d966b | 199 | extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); |
1da177e4 LT |
200 | |
201 | /* br_netfilter.c */ | |
c0909713 | 202 | #ifdef CONFIG_BRIDGE_NETFILTER |
1da177e4 LT |
203 | extern int br_netfilter_init(void); |
204 | extern void br_netfilter_fini(void); | |
4adf0af6 | 205 | extern void br_netfilter_rtable_init(struct net_bridge *); |
c0909713 SH |
206 | #else |
207 | #define br_netfilter_init() (0) | |
208 | #define br_netfilter_fini() do { } while(0) | |
4adf0af6 | 209 | #define br_netfilter_rtable_init(x) |
c0909713 | 210 | #endif |
1da177e4 LT |
211 | |
212 | /* br_stp.c */ | |
213 | extern void br_log_state(const struct net_bridge_port *p); | |
214 | extern struct net_bridge_port *br_get_port(struct net_bridge *br, | |
9d6f229f | 215 | u16 port_no); |
1da177e4 LT |
216 | extern void br_init_port(struct net_bridge_port *p); |
217 | extern void br_become_designated_port(struct net_bridge_port *p); | |
218 | ||
219 | /* br_stp_if.c */ | |
220 | extern void br_stp_enable_bridge(struct net_bridge *br); | |
221 | extern void br_stp_disable_bridge(struct net_bridge *br); | |
9cde0708 | 222 | extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); |
1da177e4 LT |
223 | extern void br_stp_enable_port(struct net_bridge_port *p); |
224 | extern void br_stp_disable_port(struct net_bridge_port *p); | |
225 | extern void br_stp_recalculate_bridge_id(struct net_bridge *br); | |
4505a3ef | 226 | extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); |
1da177e4 LT |
227 | extern void br_stp_set_bridge_priority(struct net_bridge *br, |
228 | u16 newprio); | |
229 | extern void br_stp_set_port_priority(struct net_bridge_port *p, | |
230 | u8 newprio); | |
231 | extern void br_stp_set_path_cost(struct net_bridge_port *p, | |
232 | u32 path_cost); | |
233 | extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); | |
234 | ||
235 | /* br_stp_bpdu.c */ | |
7c85fbf0 PM |
236 | struct stp_proto; |
237 | extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, | |
238 | struct net_device *dev); | |
1da177e4 LT |
239 | |
240 | /* br_stp_timer.c */ | |
241 | extern void br_stp_timer_init(struct net_bridge *br); | |
242 | extern void br_stp_port_timer_init(struct net_bridge_port *p); | |
243 | extern unsigned long br_timer_value(const struct timer_list *timer); | |
244 | ||
245 | /* br.c */ | |
da678292 MM |
246 | #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) |
247 | extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); | |
248 | #endif | |
1da177e4 | 249 | |
11dc1f36 | 250 | /* br_netlink.c */ |
32fe21c0 | 251 | extern int br_netlink_init(void); |
11dc1f36 SH |
252 | extern void br_netlink_fini(void); |
253 | extern void br_ifinfo_notify(int event, struct net_bridge_port *port); | |
254 | ||
1da177e4 LT |
255 | #ifdef CONFIG_SYSFS |
256 | /* br_sysfs_if.c */ | |
bab1deea | 257 | extern struct sysfs_ops brport_sysfs_ops; |
1da177e4 | 258 | extern int br_sysfs_addif(struct net_bridge_port *p); |
1da177e4 LT |
259 | |
260 | /* br_sysfs_br.c */ | |
261 | extern int br_sysfs_addbr(struct net_device *dev); | |
262 | extern void br_sysfs_delbr(struct net_device *dev); | |
263 | ||
264 | #else | |
265 | ||
266 | #define br_sysfs_addif(p) (0) | |
1da177e4 LT |
267 | #define br_sysfs_addbr(dev) (0) |
268 | #define br_sysfs_delbr(dev) do { } while(0) | |
269 | #endif /* CONFIG_SYSFS */ | |
270 | ||
271 | #endif |