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_stp.h,v 1.3 2001/02/05 06:03:47 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_STP_H
16#define _BR_PRIVATE_STP_H
17
18#define BPDU_TYPE_CONFIG 0
19#define BPDU_TYPE_TCN 0x80
20
21struct br_config_bpdu
22{
23 unsigned topology_change:1;
24 unsigned topology_change_ack:1;
25 bridge_id root;
26 int root_path_cost;
27 bridge_id bridge_id;
28 port_id port_id;
29 int message_age;
30 int max_age;
31 int hello_time;
32 int forward_delay;
33};
34
35/* called under bridge lock */
36static inline int br_is_designated_port(const struct net_bridge_port *p)
37{
38 return !memcmp(&p->designated_bridge, &p->br->bridge_id, 8) &&
39 (p->designated_port == p->port_id);
40}
41
42
43/* br_stp.c */
44extern void br_become_root_bridge(struct net_bridge *br);
45extern void br_config_bpdu_generation(struct net_bridge *);
46extern void br_configuration_update(struct net_bridge *);
47extern void br_port_state_selection(struct net_bridge *);
48extern void br_received_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu);
49extern void br_received_tcn_bpdu(struct net_bridge_port *p);
50extern void br_transmit_config(struct net_bridge_port *p);
51extern void br_transmit_tcn(struct net_bridge *br);
52extern void br_topology_change_detection(struct net_bridge *br);
53
54/* br_stp_bpdu.c */
55extern void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
56extern void br_send_tcn_bpdu(struct net_bridge_port *);
57
58#endif