From 07699f9a7c8d1002e07011d5aa382cd63241eea8 Mon Sep 17 00:00:00 2001 From: "sfeldma@cumulusnetworks.com" Date: Thu, 16 Jan 2014 22:57:49 -0800 Subject: bonding: add sysfs /slave dir for bond slave devices. MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Add sub-directory under /sys/class/net//slave with read-only attributes for slave. Directory only appears when is a slave. $ tree /sys/class/net/eth2/slave/ /sys/class/net/eth2/slave/ ├── ad_aggregator_id ├── link_failure_count ├── mii_status ├── perm_hwaddr ├── queue_id └── state $ cat /sys/class/net/eth2/slave/* 2 0 up 40:02:10:ef:06:01 0 active Signed-off-by: Scott Feldman Signed-off-by: David S. Miller --- drivers/net/bonding/bond_sysfs_slave.c | 144 +++++++++++++++++++++++++++++++++ 1 file changed, 144 insertions(+) create mode 100644 drivers/net/bonding/bond_sysfs_slave.c (limited to 'drivers/net/bonding/bond_sysfs_slave.c') diff --git a/drivers/net/bonding/bond_sysfs_slave.c b/drivers/net/bonding/bond_sysfs_slave.c new file mode 100644 index 000000000000..7cb97de3cf63 --- /dev/null +++ b/drivers/net/bonding/bond_sysfs_slave.c @@ -0,0 +1,144 @@ +/* Sysfs attributes of bond slaves + * + * Copyright (c) 2014 Scott Feldman + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + */ + +#include +#include +#include + +#include "bonding.h" + +struct slave_attribute { + struct attribute attr; + ssize_t (*show)(struct slave *, char *); +}; + +#define SLAVE_ATTR(_name, _mode, _show) \ +const struct slave_attribute slave_attr_##_name = { \ + .attr = {.name = __stringify(_name), \ + .mode = _mode }, \ + .show = _show, \ +}; +#define SLAVE_ATTR_RO(_name) \ + SLAVE_ATTR(_name, S_IRUGO, _name##_show) + +static ssize_t state_show(struct slave *slave, char *buf) +{ + switch (bond_slave_state(slave)) { + case BOND_STATE_ACTIVE: + return sprintf(buf, "active\n"); + case BOND_STATE_BACKUP: + return sprintf(buf, "backup\n"); + default: + return sprintf(buf, "UNKONWN\n"); + } +} +static SLAVE_ATTR_RO(state); + +static ssize_t mii_status_show(struct slave *slave, char *buf) +{ + return sprintf(buf, "%s\n", bond_slave_link_status(slave->link)); +} +static SLAVE_ATTR_RO(mii_status); + +static ssize_t link_failure_count_show(struct slave *slave, char *buf) +{ + return sprintf(buf, "%d\n", slave->link_failure_count); +} +static SLAVE_ATTR_RO(link_failure_count); + +static ssize_t perm_hwaddr_show(struct slave *slave, char *buf) +{ + return sprintf(buf, "%pM\n", slave->perm_hwaddr); +} +static SLAVE_ATTR_RO(perm_hwaddr); + +static ssize_t queue_id_show(struct slave *slave, char *buf) +{ + return sprintf(buf, "%d\n", slave->queue_id); +} +static SLAVE_ATTR_RO(queue_id); + +static ssize_t ad_aggregator_id_show(struct slave *slave, char *buf) +{ + const struct aggregator *agg; + + if (slave->bond->params.mode == BOND_MODE_8023AD) { + agg = SLAVE_AD_INFO(slave).port.aggregator; + if (agg) + return sprintf(buf, "%d\n", + agg->aggregator_identifier); + } + + return sprintf(buf, "N/A\n"); +} +static SLAVE_ATTR_RO(ad_aggregator_id); + +static const struct slave_attribute *slave_attrs[] = { + &slave_attr_state, + &slave_attr_mii_status, + &slave_attr_link_failure_count, + &slave_attr_perm_hwaddr, + &slave_attr_queue_id, + &slave_attr_ad_aggregator_id, + NULL +}; + +#define to_slave_attr(_at) container_of(_at, struct slave_attribute, attr) +#define to_slave(obj) container_of(obj, struct slave, kobj) + +static ssize_t slave_show(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct slave_attribute *slave_attr = to_slave_attr(attr); + struct slave *slave = to_slave(kobj); + + return slave_attr->show(slave, buf); +} + +const struct sysfs_ops slave_sysfs_ops = { + .show = slave_show, +}; + +static struct kobj_type slave_ktype = { +#ifdef CONFIG_SYSFS + .sysfs_ops = &slave_sysfs_ops, +#endif +}; + +int bond_sysfs_slave_add(struct slave *slave) +{ + const struct slave_attribute **a; + int err; + + err = kobject_init_and_add(&slave->kobj, &slave_ktype, + &(slave->dev->dev.kobj), "slave"); + if (err) + return err; + + for (a = slave_attrs; *a; ++a) { + err = sysfs_create_file(&slave->kobj, &((*a)->attr)); + if (err) { + kobject_del(&slave->kobj); + return err; + } + } + + return 0; +} + +void bond_sysfs_slave_del(struct slave *slave) +{ + const struct slave_attribute **a; + + for (a = slave_attrs; *a; ++a) + sysfs_remove_file(&slave->kobj, &((*a)->attr)); + + kobject_del(&slave->kobj); +} -- cgit v1.2.3