cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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br_private_stp.h (1766B)

      1/* SPDX-License-Identifier: GPL-2.0-or-later */
      2/*
      3 *	Linux ethernet bridge
      4 *
      5 *	Authors:
      6 *	Lennert Buytenhek		<buytenh@gnu.org>
      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
     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
     28struct br_config_bpdu {
     29	unsigned int	topology_change:1;
     30	unsigned int	topology_change_ack:1;
     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 */
     42static 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 */
     50void br_become_root_bridge(struct net_bridge *br);
     51void br_config_bpdu_generation(struct net_bridge *);
     52void br_configuration_update(struct net_bridge *);
     53void br_port_state_selection(struct net_bridge *);
     54void br_received_config_bpdu(struct net_bridge_port *p,
     55			     const struct br_config_bpdu *bpdu);
     56void br_received_tcn_bpdu(struct net_bridge_port *p);
     57void br_transmit_config(struct net_bridge_port *p);
     58void br_transmit_tcn(struct net_bridge *br);
     59void br_topology_change_detection(struct net_bridge *br);
     60void __br_set_topology_change(struct net_bridge *br, unsigned char val);
     61
     62/* br_stp_bpdu.c */
     63void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
     64void br_send_tcn_bpdu(struct net_bridge_port *);
     65
     66#endif