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)  *	Sysfs attributes of bridge ports
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *	Linux ethernet bridge
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  *	Authors:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  *	Stephen Hemminger		<shemminger@osdl.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <linux/if_bridge.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <linux/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/sched/signal.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) #include "br_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) struct brport_attribute {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	struct attribute	attr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	ssize_t (*show)(struct net_bridge_port *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) 	int (*store)(struct net_bridge_port *, unsigned long);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 	int (*store_raw)(struct net_bridge_port *, char *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) #define BRPORT_ATTR_RAW(_name, _mode, _show, _store)			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) const struct brport_attribute brport_attr_##_name = {			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 	.attr		= {.name = __stringify(_name),			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 			   .mode = _mode },				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 	.show		= _show,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	.store_raw	= _store,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) #define BRPORT_ATTR(_name, _mode, _show, _store)		\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) const struct brport_attribute brport_attr_##_name = { 	        \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 	.attr = {.name = __stringify(_name), 			\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 		 .mode = _mode },				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) 	.show	= _show,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 	.store	= _store,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) #define BRPORT_ATTR_FLAG(_name, _mask)				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) static ssize_t show_##_name(struct net_bridge_port *p, char *buf) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) {								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 	return sprintf(buf, "%d\n", !!(p->flags & _mask));	\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) }								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) static int store_##_name(struct net_bridge_port *p, unsigned long v) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) {								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 	return store_flag(p, v, _mask);				\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) }								\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) static BRPORT_ATTR(_name, 0644,					\
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 		   show_##_name, store_##_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) static int store_flag(struct net_bridge_port *p, unsigned long v,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 		      unsigned long mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	unsigned long flags = p->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	if (v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		flags |= mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 		flags &= ~mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 	if (flags != p->flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 		err = br_switchdev_set_port_flag(p, flags, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 		p->flags = flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 		br_port_flags_change(p, mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) static ssize_t show_path_cost(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	return sprintf(buf, "%d\n", p->path_cost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) static BRPORT_ATTR(path_cost, 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		   show_path_cost, br_stp_set_path_cost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) static ssize_t show_priority(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	return sprintf(buf, "%d\n", p->priority);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) static BRPORT_ATTR(priority, 0644,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 			 show_priority, br_stp_set_port_priority);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) static ssize_t show_designated_root(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 	return br_show_bridge_id(buf, &p->designated_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) static BRPORT_ATTR(designated_root, 0444, show_designated_root, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) static ssize_t show_designated_bridge(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	return br_show_bridge_id(buf, &p->designated_bridge);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static BRPORT_ATTR(designated_bridge, 0444, show_designated_bridge, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static ssize_t show_designated_port(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 	return sprintf(buf, "%d\n", p->designated_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) static BRPORT_ATTR(designated_port, 0444, show_designated_port, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static ssize_t show_designated_cost(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	return sprintf(buf, "%d\n", p->designated_cost);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static BRPORT_ATTR(designated_cost, 0444, show_designated_cost, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static ssize_t show_port_id(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 	return sprintf(buf, "0x%x\n", p->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static BRPORT_ATTR(port_id, 0444, show_port_id, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static ssize_t show_port_no(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 	return sprintf(buf, "0x%x\n", p->port_no);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) static BRPORT_ATTR(port_no, 0444, show_port_no, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) static ssize_t show_change_ack(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 	return sprintf(buf, "%d\n", p->topology_change_ack);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) static BRPORT_ATTR(change_ack, 0444, show_change_ack, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) static ssize_t show_config_pending(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	return sprintf(buf, "%d\n", p->config_pending);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) static BRPORT_ATTR(config_pending, 0444, show_config_pending, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) static ssize_t show_port_state(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	return sprintf(buf, "%d\n", p->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) static BRPORT_ATTR(state, 0444, show_port_state, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) static ssize_t show_message_age_timer(struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 					    char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	return sprintf(buf, "%ld\n", br_timer_value(&p->message_age_timer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) static BRPORT_ATTR(message_age_timer, 0444, show_message_age_timer, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static ssize_t show_forward_delay_timer(struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 					    char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	return sprintf(buf, "%ld\n", br_timer_value(&p->forward_delay_timer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static BRPORT_ATTR(forward_delay_timer, 0444, show_forward_delay_timer, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) static ssize_t show_hold_timer(struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 					    char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 	return sprintf(buf, "%ld\n", br_timer_value(&p->hold_timer));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static BRPORT_ATTR(hold_timer, 0444, show_hold_timer, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) static int store_flush(struct net_bridge_port *p, unsigned long v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 	br_fdb_delete_by_port(p->br, p, 0, 0); // Don't delete local entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) static BRPORT_ATTR(flush, 0200, NULL, store_flush);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) static ssize_t show_group_fwd_mask(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	return sprintf(buf, "%#x\n", p->group_fwd_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) static int store_group_fwd_mask(struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 				unsigned long v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	if (v & BR_GROUPFWD_MACPAUSE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	p->group_fwd_mask = v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static BRPORT_ATTR(group_fwd_mask, 0644, show_group_fwd_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		   store_group_fwd_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) static ssize_t show_backup_port(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 	struct net_bridge_port *backup_p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 	int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 	rcu_read_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	backup_p = rcu_dereference(p->backup_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	if (backup_p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 		ret = sprintf(buf, "%s\n", backup_p->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	rcu_read_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static int store_backup_port(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	struct net_device *backup_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	char *nl = strchr(buf, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	if (nl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		*nl = '\0';
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	if (strlen(buf) > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		backup_dev = __dev_get_by_name(dev_net(p->dev), buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		if (!backup_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 			return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 	return nbp_backup_change(p, backup_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static BRPORT_ATTR_RAW(backup_port, 0644, show_backup_port, store_backup_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) BRPORT_ATTR_FLAG(hairpin_mode, BR_HAIRPIN_MODE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) BRPORT_ATTR_FLAG(bpdu_guard, BR_BPDU_GUARD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLOCK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) BRPORT_ATTR_FLAG(learning, BR_LEARNING);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) BRPORT_ATTR_FLAG(unicast_flood, BR_FLOOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) BRPORT_ATTR_FLAG(proxyarp, BR_PROXYARP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) BRPORT_ATTR_FLAG(proxyarp_wifi, BR_PROXYARP_WIFI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) BRPORT_ATTR_FLAG(multicast_flood, BR_MCAST_FLOOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) BRPORT_ATTR_FLAG(broadcast_flood, BR_BCAST_FLOOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) BRPORT_ATTR_FLAG(neigh_suppress, BR_NEIGH_SUPPRESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) BRPORT_ATTR_FLAG(isolated, BR_ISOLATED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) static ssize_t show_multicast_router(struct net_bridge_port *p, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 	return sprintf(buf, "%d\n", p->multicast_router);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) static int store_multicast_router(struct net_bridge_port *p,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 				      unsigned long v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	return br_multicast_set_port_router(p, v);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static BRPORT_ATTR(multicast_router, 0644, show_multicast_router,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 		   store_multicast_router);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) BRPORT_ATTR_FLAG(multicast_fast_leave, BR_MULTICAST_FAST_LEAVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) BRPORT_ATTR_FLAG(multicast_to_unicast, BR_MULTICAST_TO_UNICAST);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) static const struct brport_attribute *brport_attrs[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 	&brport_attr_path_cost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	&brport_attr_priority,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	&brport_attr_port_id,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	&brport_attr_port_no,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 	&brport_attr_designated_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 	&brport_attr_designated_bridge,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	&brport_attr_designated_port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	&brport_attr_designated_cost,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 	&brport_attr_state,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 	&brport_attr_change_ack,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	&brport_attr_config_pending,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 	&brport_attr_message_age_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	&brport_attr_forward_delay_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) 	&brport_attr_hold_timer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 	&brport_attr_flush,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) 	&brport_attr_hairpin_mode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 	&brport_attr_bpdu_guard,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 	&brport_attr_root_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) 	&brport_attr_learning,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	&brport_attr_unicast_flood,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) #ifdef CONFIG_BRIDGE_IGMP_SNOOPING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	&brport_attr_multicast_router,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	&brport_attr_multicast_fast_leave,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	&brport_attr_multicast_to_unicast,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	&brport_attr_proxyarp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	&brport_attr_proxyarp_wifi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	&brport_attr_multicast_flood,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	&brport_attr_broadcast_flood,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 	&brport_attr_group_fwd_mask,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	&brport_attr_neigh_suppress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 	&brport_attr_isolated,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 	&brport_attr_backup_port,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	NULL
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) #define to_brport_attr(_at) container_of(_at, struct brport_attribute, attr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) static ssize_t brport_show(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 			   struct attribute *attr, char *buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 	struct brport_attribute *brport_attr = to_brport_attr(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 	struct net_bridge_port *p = kobj_to_brport(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 	if (!brport_attr->show)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 	return brport_attr->show(p, buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) static ssize_t brport_store(struct kobject *kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 			    struct attribute *attr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 			    const char *buf, size_t count)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	struct brport_attribute *brport_attr = to_brport_attr(attr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 	struct net_bridge_port *p = kobj_to_brport(kobj);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 	ssize_t ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 	unsigned long val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 	char *endp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 	if (!ns_capable(dev_net(p->dev)->user_ns, CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 	if (!rtnl_trylock())
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 		return restart_syscall();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 	if (brport_attr->store_raw) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 		char *buf_copy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 		buf_copy = kstrndup(buf, count, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 		if (!buf_copy) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 			ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 			goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 		spin_lock_bh(&p->br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 		ret = brport_attr->store_raw(p, buf_copy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 		spin_unlock_bh(&p->br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 		kfree(buf_copy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 	} else if (brport_attr->store) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		val = simple_strtoul(buf, &endp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 		if (endp == buf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 			goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 		spin_lock_bh(&p->br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 		ret = brport_attr->store(p, val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		spin_unlock_bh(&p->br->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 	if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 		br_ifinfo_notify(RTM_NEWLINK, NULL, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		ret = count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 	return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) const struct sysfs_ops brport_sysfs_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 	.show = brport_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	.store = brport_store,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359)  * Add sysfs entries to ethernet device added to a bridge.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)  * Creates a brport subdirectory with bridge attributes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361)  * Puts symlink in bridge's brif subdirectory
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) int br_sysfs_addif(struct net_bridge_port *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	struct net_bridge *br = p->br;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 	const struct brport_attribute **a;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 	err = sysfs_create_link(&p->kobj, &br->dev->dev.kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 				SYSFS_BRIDGE_PORT_LINK);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) 	for (a = brport_attrs; *a; ++a) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 		err = sysfs_create_file(&p->kobj, &((*a)->attr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) 		if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) 			return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 	strlcpy(p->sysfs_name, p->dev->name, IFNAMSIZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) 	return sysfs_create_link(br->ifobj, &p->kobj, p->sysfs_name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) /* Rename bridge's brif symlink */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) int br_sysfs_renameif(struct net_bridge_port *p)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	struct net_bridge *br = p->br;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	/* If a rename fails, the rollback will cause another
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	 * rename call with the existing name.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 	if (!strncmp(p->sysfs_name, p->dev->name, IFNAMSIZ))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 		return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	err = sysfs_rename_link(br->ifobj, &p->kobj,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 				p->sysfs_name, p->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 		netdev_notice(br->dev, "unable to rename link %s to %s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) 			      p->sysfs_name, p->dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 		strlcpy(p->sysfs_name, p->dev->name, IFNAMSIZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }