Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3)  *	Linux ethernet bridge
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5)  *	Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6)  *	Lennert Buytenhek		<buytenh@gnu.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #ifndef _BR_PRIVATE_STP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #define _BR_PRIVATE_STP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #define BPDU_TYPE_CONFIG 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #define BPDU_TYPE_TCN 0x80
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* IEEE 802.1D-1998 timer values */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define BR_MIN_HELLO_TIME	(1*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #define BR_MAX_HELLO_TIME	(10*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #define BR_MIN_FORWARD_DELAY	(2*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define BR_MAX_FORWARD_DELAY	(30*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define BR_MIN_MAX_AGE		(6*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define BR_MAX_MAX_AGE		(40*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define BR_MIN_PATH_COST	1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #define BR_MAX_PATH_COST	65535
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) struct br_config_bpdu {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	unsigned int	topology_change:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	unsigned int	topology_change_ack:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 	bridge_id	root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	int		root_path_cost;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 	bridge_id	bridge_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	port_id		port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	int		message_age;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	int		max_age;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	int		hello_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	int		forward_delay;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* called under bridge lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static inline int br_is_designated_port(const struct net_bridge_port *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	return !memcmp(&p->designated_bridge, &p->br->bridge_id, 8) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 		(p->designated_port == p->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) /* br_stp.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) void br_become_root_bridge(struct net_bridge *br);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) void br_config_bpdu_generation(struct net_bridge *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) void br_configuration_update(struct net_bridge *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) void br_port_state_selection(struct net_bridge *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void br_received_config_bpdu(struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 			     const struct br_config_bpdu *bpdu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) void br_received_tcn_bpdu(struct net_bridge_port *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void br_transmit_config(struct net_bridge_port *p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) void br_transmit_tcn(struct net_bridge *br);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) void br_topology_change_detection(struct net_bridge *br);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) void __br_set_topology_change(struct net_bridge *br, unsigned char val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) /* br_stp_bpdu.c */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) void br_send_tcn_bpdu(struct net_bridge_port *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) #endif