diff options
Diffstat (limited to 'net/bridge/br_private_stp.h')
| -rw-r--r-- | net/bridge/br_private_stp.h | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/net/bridge/br_private_stp.h b/net/bridge/br_private_stp.h new file mode 100644 index 0000000..8b650f7 --- /dev/null +++ b/net/bridge/br_private_stp.h @@ -0,0 +1,56 @@ +/* + * Linux ethernet bridge + * + * Authors: + * Lennert Buytenhek <buytenh@gnu.org> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#ifndef _BR_PRIVATE_STP_H +#define _BR_PRIVATE_STP_H + +#define BPDU_TYPE_CONFIG 0 +#define BPDU_TYPE_TCN 0x80 + +struct br_config_bpdu +{ + unsigned topology_change:1; + unsigned topology_change_ack:1; + bridge_id root; + int root_path_cost; + bridge_id bridge_id; + port_id port_id; + int message_age; + int max_age; + int hello_time; + int forward_delay; +}; + +/* called under bridge lock */ +static inline int br_is_designated_port(const struct net_bridge_port *p) +{ + return !memcmp(&p->designated_bridge, &p->br->bridge_id, 8) && + (p->designated_port == p->port_id); +} + + +/* br_stp.c */ +extern void br_become_root_bridge(struct net_bridge *br); +extern void br_config_bpdu_generation(struct net_bridge *); +extern void br_configuration_update(struct net_bridge *); +extern void br_port_state_selection(struct net_bridge *); +extern void br_received_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu); +extern void br_received_tcn_bpdu(struct net_bridge_port *p); +extern void br_transmit_config(struct net_bridge_port *p); +extern void br_transmit_tcn(struct net_bridge *br); +extern void br_topology_change_detection(struct net_bridge *br); + +/* br_stp_bpdu.c */ +extern void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *); +extern void br_send_tcn_bpdu(struct net_bridge_port *); + +#endif |
