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1// SPDX-License-Identifier: GPL-2.0-or-later2/* Sysfs attributes of bond slaves3 *4 * Copyright (c) 2014 Scott Feldman <sfeldma@cumulusnetworks.com>5 */6 7#include <linux/capability.h>8#include <linux/kernel.h>9#include <linux/netdevice.h>10 11#include <net/bonding.h>12 13struct slave_attribute {14 struct attribute attr;15 ssize_t (*show)(struct slave *, char *);16};17 18#define SLAVE_ATTR_RO(_name) \19const struct slave_attribute slave_attr_##_name = __ATTR_RO(_name)20 21static ssize_t state_show(struct slave *slave, char *buf)22{23 switch (bond_slave_state(slave)) {24 case BOND_STATE_ACTIVE:25 return sysfs_emit(buf, "active\n");26 case BOND_STATE_BACKUP:27 return sysfs_emit(buf, "backup\n");28 default:29 return sysfs_emit(buf, "UNKNOWN\n");30 }31}32static SLAVE_ATTR_RO(state);33 34static ssize_t mii_status_show(struct slave *slave, char *buf)35{36 return sysfs_emit(buf, "%s\n", bond_slave_link_status(slave->link));37}38static SLAVE_ATTR_RO(mii_status);39 40static ssize_t link_failure_count_show(struct slave *slave, char *buf)41{42 return sysfs_emit(buf, "%d\n", slave->link_failure_count);43}44static SLAVE_ATTR_RO(link_failure_count);45 46static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)47{48 return sysfs_emit(buf, "%*phC\n",49 slave->dev->addr_len,50 slave->perm_hwaddr);51}52static SLAVE_ATTR_RO(perm_hwaddr);53 54static ssize_t queue_id_show(struct slave *slave, char *buf)55{56 return sysfs_emit(buf, "%d\n", READ_ONCE(slave->queue_id));57}58static SLAVE_ATTR_RO(queue_id);59 60static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)61{62 const struct aggregator *agg;63 64 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {65 agg = SLAVE_AD_INFO(slave)->port.aggregator;66 if (agg)67 return sysfs_emit(buf, "%d\n",68 agg->aggregator_identifier);69 }70 71 return sysfs_emit(buf, "N/A\n");72}73static SLAVE_ATTR_RO(ad_aggregator_id);74 75static ssize_t ad_actor_oper_port_state_show(struct slave *slave, char *buf)76{77 const struct port *ad_port;78 79 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {80 ad_port = &SLAVE_AD_INFO(slave)->port;81 if (ad_port->aggregator)82 return sysfs_emit(buf, "%u\n",83 ad_port->actor_oper_port_state);84 }85 86 return sysfs_emit(buf, "N/A\n");87}88static SLAVE_ATTR_RO(ad_actor_oper_port_state);89 90static ssize_t ad_partner_oper_port_state_show(struct slave *slave, char *buf)91{92 const struct port *ad_port;93 94 if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {95 ad_port = &SLAVE_AD_INFO(slave)->port;96 if (ad_port->aggregator)97 return sysfs_emit(buf, "%u\n",98 ad_port->partner_oper.port_state);99 }100 101 return sysfs_emit(buf, "N/A\n");102}103static SLAVE_ATTR_RO(ad_partner_oper_port_state);104 105static const struct attribute *slave_attrs[] = {106 &slave_attr_state.attr,107 &slave_attr_mii_status.attr,108 &slave_attr_link_failure_count.attr,109 &slave_attr_perm_hwaddr.attr,110 &slave_attr_queue_id.attr,111 &slave_attr_ad_aggregator_id.attr,112 &slave_attr_ad_actor_oper_port_state.attr,113 &slave_attr_ad_partner_oper_port_state.attr,114 NULL115};116 117#define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr)118 119static ssize_t slave_show(struct kobject *kobj,120 struct attribute *attr, char *buf)121{122 struct slave_attribute *slave_attr = to_slave_attr(attr);123 struct slave *slave = to_slave(kobj);124 125 return slave_attr->show(slave, buf);126}127 128const struct sysfs_ops slave_sysfs_ops = {129 .show = slave_show,130};131 132int bond_sysfs_slave_add(struct slave *slave)133{134 return sysfs_create_files(&slave->kobj, slave_attrs);135}136 137void bond_sysfs_slave_del(struct slave *slave)138{139 sysfs_remove_files(&slave->kobj, slave_attrs);140}141