bonding: add sysfs /slave dir for bond slave devices. (07699f9a) · Commits · e / devices / android_kernel_samsung_universal8890

drivers/net/bonding/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -4,7 +4,7 @@

		obj-$(CONFIG_BONDING) += bonding.o

		bonding-objs := bond_main.o bond_3ad.o bond_alb.o bond_sysfs.o bond_debugfs.o bond_netlink.o bond_options.o
		bonding-objs := bond_main.o bond_3ad.o bond_alb.o bond_sysfs.o bond_sysfs_slave.o bond_debugfs.o bond_netlink.o bond_options.o

		proc-$(CONFIG_PROC_FS) += bond_procfs.o
		bonding-objs += $(proc-y)

drivers/net/bonding/bond_main.c

+27 −0

Original line number	Diff line number	Diff line
		@@ -466,6 +466,22 @@ static void bond_update_speed_duplex(struct slave *slave)
		return;
		}

		const char *bond_slave_link_status(s8 link)
		{
		switch (link) {
		case BOND_LINK_UP:
		return "up";
		case BOND_LINK_FAIL:
		return "going down";
		case BOND_LINK_DOWN:
		return "down";
		case BOND_LINK_BACK:
		return "going back";
		default:
		return "unknown";
		}
		}

		/*
		* if <dev> supports MII link status reporting, check its link status.
		*
		@@ -1576,6 +1592,12 @@ int bond_enslave(struct net_device bond_dev, struct net_device slave_dev)
		goto err_unregister;
		}

		res = bond_sysfs_slave_add(new_slave);
		if (res) {
		pr_debug("Error %d calling bond_sysfs_slave_add\n", res);
		goto err_upper_unlink;
		}

		bond->slave_cnt++;
		bond_compute_features(bond);
		bond_set_carrier(bond);
		@@ -1595,6 +1617,9 @@ int bond_enslave(struct net_device bond_dev, struct net_device slave_dev)
		return 0;

		/* Undo stages on error */
		err_upper_unlink:
		bond_upper_dev_unlink(bond_dev, slave_dev);

		err_unregister:
		netdev_rx_handler_unregister(slave_dev);

		@@ -1687,6 +1712,8 @@ static int __bond_release_one(struct net_device *bond_dev,
		/* release the slave from its bond */
		bond->slave_cnt--;

		bond_sysfs_slave_del(slave);

		bond_upper_dev_unlink(bond_dev, slave_dev);
		/* unregister rx_handler early so bond_handle_frame wouldn't be called
		* for this slave anymore.

drivers/net/bonding/bond_procfs.c

+0 −12

Original line number	Diff line number	Diff line
		@@ -159,18 +159,6 @@ static void bond_info_show_master(struct seq_file *seq)
		}
		}

		static const char *bond_slave_link_status(s8 link)
		{
		static const char * const status[] = {
		[BOND_LINK_UP] = "up",
		[BOND_LINK_FAIL] = "going down",
		[BOND_LINK_DOWN] = "down",
		[BOND_LINK_BACK] = "going back",
		};

		return status[link];
		}

		static void bond_info_show_slave(struct seq_file *seq,
		const struct slave *slave)
		{

drivers/net/bonding/bond_sysfs_slave.c

0 → 100644

+144 −0

Original line number	Diff line number	Diff line
		/* Sysfs attributes of bond slaves
		*
		* Copyright (c) 2014 Scott Feldman <sfeldma@cumulusnetworks.com>
		*
		* 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 <linux/capability.h>
		#include <linux/kernel.h>
		#include <linux/netdevice.h>

		#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);
		}

drivers/net/bonding/bonding.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -203,6 +203,7 @@ struct slave {
		#ifdef CONFIG_NET_POLL_CONTROLLER
		struct netpoll *np;
		#endif
		struct kobject kobj;
		};

		/*
		@@ -421,6 +422,8 @@ int bond_create(struct net net, const char name);
		int bond_create_sysfs(struct bond_net *net);
		void bond_destroy_sysfs(struct bond_net *net);
		void bond_prepare_sysfs_group(struct bonding *bond);
		int bond_sysfs_slave_add(struct slave *slave);
		void bond_sysfs_slave_del(struct slave *slave);
		int bond_enslave(struct net_device bond_dev, struct net_device slave_dev);
		int bond_release(struct net_device bond_dev, struct net_device slave_dev);
		int bond_xmit_hash(struct bonding bond, struct sk_buff skb, int count);
		@@ -469,6 +472,7 @@ int bond_option_lacp_rate_set(struct bonding *bond, int lacp_rate);
		int bond_option_ad_select_set(struct bonding *bond, int ad_select);
		struct net_device bond_option_active_slave_get_rcu(struct bonding bond);
		struct net_device bond_option_active_slave_get(struct bonding bond);
		const char *bond_slave_link_status(s8 link);

		struct bond_net {
		struct net * net; /* Associated network namespace */