]>
Commit | Line | Data |
---|---|---|
2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * Linux ethernet bridge | |
4 | * | |
5 | * Authors: | |
6 | * Lennert Buytenhek <buytenh@gnu.org> | |
1da177e4 LT |
7 | */ |
8 | ||
9 | #ifndef _BR_PRIVATE_STP_H | |
10 | #define _BR_PRIVATE_STP_H | |
11 | ||
12 | #define BPDU_TYPE_CONFIG 0 | |
13 | #define BPDU_TYPE_TCN 0x80 | |
14 | ||
14f98f25 | 15 | /* IEEE 802.1D-1998 timer values */ |
16 | #define BR_MIN_HELLO_TIME (1*HZ) | |
17 | #define BR_MAX_HELLO_TIME (10*HZ) | |
18 | ||
19 | #define BR_MIN_FORWARD_DELAY (2*HZ) | |
20 | #define BR_MAX_FORWARD_DELAY (30*HZ) | |
21 | ||
22 | #define BR_MIN_MAX_AGE (6*HZ) | |
23 | #define BR_MAX_MAX_AGE (40*HZ) | |
24 | ||
25 | #define BR_MIN_PATH_COST 1 | |
26 | #define BR_MAX_PATH_COST 65535 | |
27 | ||
95c96174 ED |
28 | struct br_config_bpdu { |
29 | unsigned int topology_change:1; | |
30 | unsigned int topology_change_ack:1; | |
1da177e4 LT |
31 | bridge_id root; |
32 | int root_path_cost; | |
33 | bridge_id bridge_id; | |
34 | port_id port_id; | |
35 | int message_age; | |
36 | int max_age; | |
37 | int hello_time; | |
38 | int forward_delay; | |
39 | }; | |
40 | ||
41 | /* called under bridge lock */ | |
42 | static inline int br_is_designated_port(const struct net_bridge_port *p) | |
43 | { | |
44 | return !memcmp(&p->designated_bridge, &p->br->bridge_id, 8) && | |
45 | (p->designated_port == p->port_id); | |
46 | } | |
47 | ||
48 | ||
49 | /* br_stp.c */ | |
348662a1 JP |
50 | void br_become_root_bridge(struct net_bridge *br); |
51 | void br_config_bpdu_generation(struct net_bridge *); | |
52 | void br_configuration_update(struct net_bridge *); | |
53 | void br_port_state_selection(struct net_bridge *); | |
54 | void br_received_config_bpdu(struct net_bridge_port *p, | |
55 | const struct br_config_bpdu *bpdu); | |
56 | void br_received_tcn_bpdu(struct net_bridge_port *p); | |
57 | void br_transmit_config(struct net_bridge_port *p); | |
58 | void br_transmit_tcn(struct net_bridge *br); | |
59 | void br_topology_change_detection(struct net_bridge *br); | |
8384b5f5 | 60 | void __br_set_topology_change(struct net_bridge *br, unsigned char val); |
1da177e4 LT |
61 | |
62 | /* br_stp_bpdu.c */ | |
348662a1 JP |
63 | void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *); |
64 | void br_send_tcn_bpdu(struct net_bridge_port *); | |
1da177e4 LT |
65 | |
66 | #endif |