mirror of https://gitee.com/openkylin/linux.git
145 lines
3.4 KiB
C
145 lines
3.4 KiB
C
/* Sysfs attributes of bond slaves
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*
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* Copyright (c) 2014 Scott Feldman <sfeldma@cumulusnetworks.com>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/capability.h>
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#include <linux/kernel.h>
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#include <linux/netdevice.h>
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#include "bonding.h"
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struct slave_attribute {
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struct attribute attr;
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ssize_t (*show)(struct slave *, char *);
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};
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#define SLAVE_ATTR(_name, _mode, _show) \
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const struct slave_attribute slave_attr_##_name = { \
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.attr = {.name = __stringify(_name), \
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.mode = _mode }, \
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.show = _show, \
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};
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#define SLAVE_ATTR_RO(_name) \
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SLAVE_ATTR(_name, S_IRUGO, _name##_show)
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static ssize_t state_show(struct slave *slave, char *buf)
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{
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switch (bond_slave_state(slave)) {
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case BOND_STATE_ACTIVE:
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return sprintf(buf, "active\n");
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case BOND_STATE_BACKUP:
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return sprintf(buf, "backup\n");
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default:
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return sprintf(buf, "UNKONWN\n");
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}
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}
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static SLAVE_ATTR_RO(state);
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static ssize_t mii_status_show(struct slave *slave, char *buf)
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{
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return sprintf(buf, "%s\n", bond_slave_link_status(slave->link));
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}
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static SLAVE_ATTR_RO(mii_status);
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static ssize_t link_failure_count_show(struct slave *slave, char *buf)
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{
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return sprintf(buf, "%d\n", slave->link_failure_count);
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}
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static SLAVE_ATTR_RO(link_failure_count);
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static ssize_t perm_hwaddr_show(struct slave *slave, char *buf)
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{
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return sprintf(buf, "%pM\n", slave->perm_hwaddr);
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}
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static SLAVE_ATTR_RO(perm_hwaddr);
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static ssize_t queue_id_show(struct slave *slave, char *buf)
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{
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return sprintf(buf, "%d\n", slave->queue_id);
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}
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static SLAVE_ATTR_RO(queue_id);
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static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf)
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{
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const struct aggregator *agg;
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if (BOND_MODE(slave->bond) == BOND_MODE_8023AD) {
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agg = SLAVE_AD_INFO(slave)->port.aggregator;
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if (agg)
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return sprintf(buf, "%d\n",
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agg->aggregator_identifier);
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}
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return sprintf(buf, "N/A\n");
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}
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static SLAVE_ATTR_RO(ad_aggregator_id);
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static const struct slave_attribute *slave_attrs[] = {
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&slave_attr_state,
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&slave_attr_mii_status,
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&slave_attr_link_failure_count,
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&slave_attr_perm_hwaddr,
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&slave_attr_queue_id,
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&slave_attr_ad_aggregator_id,
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NULL
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};
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#define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr)
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#define to_slave(obj) container_of(obj, struct slave, kobj)
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static ssize_t slave_show(struct kobject *kobj,
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struct attribute *attr, char *buf)
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{
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struct slave_attribute *slave_attr = to_slave_attr(attr);
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struct slave *slave = to_slave(kobj);
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return slave_attr->show(slave, buf);
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}
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static const struct sysfs_ops slave_sysfs_ops = {
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.show = slave_show,
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};
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static struct kobj_type slave_ktype = {
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#ifdef CONFIG_SYSFS
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.sysfs_ops = &slave_sysfs_ops,
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#endif
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};
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int bond_sysfs_slave_add(struct slave *slave)
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{
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const struct slave_attribute **a;
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int err;
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err = kobject_init_and_add(&slave->kobj, &slave_ktype,
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&(slave->dev->dev.kobj), "bonding_slave");
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if (err)
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return err;
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for (a = slave_attrs; *a; ++a) {
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err = sysfs_create_file(&slave->kobj, &((*a)->attr));
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if (err) {
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kobject_put(&slave->kobj);
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return err;
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}
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}
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return 0;
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}
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void bond_sysfs_slave_del(struct slave *slave)
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{
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const struct slave_attribute **a;
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for (a = slave_attrs; *a; ++a)
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sysfs_remove_file(&slave->kobj, &((*a)->attr));
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kobject_put(&slave->kobj);
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}
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