Initial import

1 files changed, 784 insertions, 0 deletions

diff --git a/drivers/net/bonding/bond_sysfs.c b/drivers/net/bonding/bond_sysfs.c
new file mode 100644
index 000000000..7e9e151d4
--- /dev/null
+++ b/drivers/net/bonding/bond_sysfs.c
@@ -0,0 +1,784 @@
+/*
+ * Copyright(c) 2004-2005 Intel Corporation. All rights reserved.
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, see <http://www.gnu.org/licenses/>.
+ *
+ * The full GNU General Public License is included in this distribution in the
+ * file called LICENSE.
+ *
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/sched.h>
+#include <linux/fs.h>
+#include <linux/types.h>
+#include <linux/string.h>
+#include <linux/netdevice.h>
+#include <linux/inetdevice.h>
+#include <linux/in.h>
+#include <linux/sysfs.h>
+#include <linux/ctype.h>
+#include <linux/inet.h>
+#include <linux/rtnetlink.h>
+#include <linux/etherdevice.h>
+#include <net/net_namespace.h>
+#include <net/netns/generic.h>
+#include <linux/nsproxy.h>
+
+#include <net/bonding.h>
+
+#define to_dev(obj)	container_of(obj, struct device, kobj)
+#define to_bond(cd)	((struct bonding *)(netdev_priv(to_net_dev(cd))))
+
+/* "show" function for the bond_masters attribute.
+ * The class parameter is ignored.
+ */
+static ssize_t bonding_show_bonds(struct class *cls,
+				  struct class_attribute *attr,
+				  char *buf)
+{
+	struct bond_net *bn =
+		container_of(attr, struct bond_net, class_attr_bonding_masters);
+	int res = 0;
+	struct bonding *bond;
+
+	rtnl_lock();
+
+	list_for_each_entry(bond, &bn->dev_list, bond_list) {
+		if (res > (PAGE_SIZE - IFNAMSIZ)) {
+			/* not enough space for another interface name */
+			if ((PAGE_SIZE - res) > 10)
+				res = PAGE_SIZE - 10;
+			res += sprintf(buf + res, "++more++ ");
+			break;
+		}
+		res += sprintf(buf + res, "%s ", bond->dev->name);
+	}
+	if (res)
+		buf[res-1] = '\n'; /* eat the leftover space */
+
+	rtnl_unlock();
+	return res;
+}
+
+static struct net_device *bond_get_by_name(struct bond_net *bn, const char *ifname)
+{
+	struct bonding *bond;
+
+	list_for_each_entry(bond, &bn->dev_list, bond_list) {
+		if (strncmp(bond->dev->name, ifname, IFNAMSIZ) == 0)
+			return bond->dev;
+	}
+	return NULL;
+}
+
+/* "store" function for the bond_masters attribute.  This is what
+ * creates and deletes entire bonds.
+ *
+ * The class parameter is ignored.
+ */
+static ssize_t bonding_store_bonds(struct class *cls,
+				   struct class_attribute *attr,
+				   const char *buffer, size_t count)
+{
+	struct bond_net *bn =
+		container_of(attr, struct bond_net, class_attr_bonding_masters);
+	char command[IFNAMSIZ + 1] = {0, };
+	char *ifname;
+	int rv, res = count;
+
+	sscanf(buffer, "%16s", command); /* IFNAMSIZ*/
+	ifname = command + 1;
+	if ((strlen(command) <= 1) ||
+	    !dev_valid_name(ifname))
+		goto err_no_cmd;
+
+	if (command[0] == '+') {
+		pr_info("%s is being created...\n", ifname);
+		rv = bond_create(bn->net, ifname);
+		if (rv) {
+			if (rv == -EEXIST)
+				pr_info("%s already exists\n", ifname);
+			else
+				pr_info("%s creation failed\n", ifname);
+			res = rv;
+		}
+	} else if (command[0] == '-') {
+		struct net_device *bond_dev;
+
+		rtnl_lock();
+		bond_dev = bond_get_by_name(bn, ifname);
+		if (bond_dev) {
+			pr_info("%s is being deleted...\n", ifname);
+			unregister_netdevice(bond_dev);
+		} else {
+			pr_err("unable to delete non-existent %s\n", ifname);
+			res = -ENODEV;
+		}
+		rtnl_unlock();
+	} else
+		goto err_no_cmd;
+
+	/* Always return either count or an error.  If you return 0, you'll
+	 * get called forever, which is bad.
+	 */
+	return res;
+
+err_no_cmd:
+	pr_err("no command found in bonding_masters - use +ifname or -ifname\n");
+	return -EPERM;
+}
+
+/* class attribute for bond_masters file.  This ends up in /sys/class/net */
+static const struct class_attribute class_attr_bonding_masters = {
+	.attr = {
+		.name = "bonding_masters",
+		.mode = S_IWUSR | S_IRUGO,
+	},
+	.show = bonding_show_bonds,
+	.store = bonding_store_bonds,
+};
+
+/* Generic "store" method for bonding sysfs option setting */
+static ssize_t bonding_sysfs_store_option(struct device *d,
+					  struct device_attribute *attr,
+					  const char *buffer, size_t count)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_option *opt;
+	int ret;
+
+	opt = bond_opt_get_by_name(attr->attr.name);
+	if (WARN_ON(!opt))
+		return -ENOENT;
+	ret = bond_opt_tryset_rtnl(bond, opt->id, (char *)buffer);
+	if (!ret)
+		ret = count;
+
+	return ret;
+}
+
+/* Show the slaves in the current bond. */
+static ssize_t bonding_show_slaves(struct device *d,
+				   struct device_attribute *attr, char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	struct list_head *iter;
+	struct slave *slave;
+	int res = 0;
+
+	if (!rtnl_trylock())
+		return restart_syscall();
+
+	bond_for_each_slave(bond, slave, iter) {
+		if (res > (PAGE_SIZE - IFNAMSIZ)) {
+			/* not enough space for another interface name */
+			if ((PAGE_SIZE - res) > 10)
+				res = PAGE_SIZE - 10;
+			res += sprintf(buf + res, "++more++ ");
+			break;
+		}
+		res += sprintf(buf + res, "%s ", slave->dev->name);
+	}
+
+	rtnl_unlock();
+
+	if (res)
+		buf[res-1] = '\n'; /* eat the leftover space */
+
+	return res;
+}
+static DEVICE_ATTR(slaves, S_IRUGO | S_IWUSR, bonding_show_slaves,
+		   bonding_sysfs_store_option);
+
+/* Show the bonding mode. */
+static ssize_t bonding_show_mode(struct device *d,
+				 struct device_attribute *attr, char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_MODE, BOND_MODE(bond));
+
+	return sprintf(buf, "%s %d\n", val->string, BOND_MODE(bond));
+}
+static DEVICE_ATTR(mode, S_IRUGO | S_IWUSR,
+		   bonding_show_mode, bonding_sysfs_store_option);
+
+/* Show the bonding transmit hash method. */
+static ssize_t bonding_show_xmit_hash(struct device *d,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_XMIT_HASH, bond->params.xmit_policy);
+
+	return sprintf(buf, "%s %d\n", val->string, bond->params.xmit_policy);
+}
+static DEVICE_ATTR(xmit_hash_policy, S_IRUGO | S_IWUSR,
+		   bonding_show_xmit_hash, bonding_sysfs_store_option);
+
+/* Show arp_validate. */
+static ssize_t bonding_show_arp_validate(struct device *d,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_ARP_VALIDATE,
+			       bond->params.arp_validate);
+
+	return sprintf(buf, "%s %d\n", val->string, bond->params.arp_validate);
+}
+static DEVICE_ATTR(arp_validate, S_IRUGO | S_IWUSR, bonding_show_arp_validate,
+		   bonding_sysfs_store_option);
+
+/* Show arp_all_targets. */
+static ssize_t bonding_show_arp_all_targets(struct device *d,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_ARP_ALL_TARGETS,
+			       bond->params.arp_all_targets);
+	return sprintf(buf, "%s %d\n",
+		       val->string, bond->params.arp_all_targets);
+}
+static DEVICE_ATTR(arp_all_targets, S_IRUGO | S_IWUSR,
+		   bonding_show_arp_all_targets, bonding_sysfs_store_option);
+
+/* Show fail_over_mac. */
+static ssize_t bonding_show_fail_over_mac(struct device *d,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
+			       bond->params.fail_over_mac);
+
+	return sprintf(buf, "%s %d\n", val->string, bond->params.fail_over_mac);
+}
+static DEVICE_ATTR(fail_over_mac, S_IRUGO | S_IWUSR,
+		   bonding_show_fail_over_mac, bonding_sysfs_store_option);
+
+/* Show the arp timer interval. */
+static ssize_t bonding_show_arp_interval(struct device *d,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.arp_interval);
+}
+static DEVICE_ATTR(arp_interval, S_IRUGO | S_IWUSR,
+		   bonding_show_arp_interval, bonding_sysfs_store_option);
+
+/* Show the arp targets. */
+static ssize_t bonding_show_arp_targets(struct device *d,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	int i, res = 0;
+
+	for (i = 0; i < BOND_MAX_ARP_TARGETS; i++) {
+		if (bond->params.arp_targets[i])
+			res += sprintf(buf + res, "%pI4 ",
+				       &bond->params.arp_targets[i]);
+	}
+	if (res)
+		buf[res-1] = '\n'; /* eat the leftover space */
+
+	return res;
+}
+static DEVICE_ATTR(arp_ip_target, S_IRUGO | S_IWUSR,
+		   bonding_show_arp_targets, bonding_sysfs_store_option);
+
+/* Show the up and down delays. */
+static ssize_t bonding_show_downdelay(struct device *d,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.downdelay * bond->params.miimon);
+}
+static DEVICE_ATTR(downdelay, S_IRUGO | S_IWUSR,
+		   bonding_show_downdelay, bonding_sysfs_store_option);
+
+static ssize_t bonding_show_updelay(struct device *d,
+				    struct device_attribute *attr,
+				    char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.updelay * bond->params.miimon);
+
+}
+static DEVICE_ATTR(updelay, S_IRUGO | S_IWUSR,
+		   bonding_show_updelay, bonding_sysfs_store_option);
+
+/* Show the LACP interval. */
+static ssize_t bonding_show_lacp(struct device *d,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_LACP_RATE, bond->params.lacp_fast);
+
+	return sprintf(buf, "%s %d\n", val->string, bond->params.lacp_fast);
+}
+static DEVICE_ATTR(lacp_rate, S_IRUGO | S_IWUSR,
+		   bonding_show_lacp, bonding_sysfs_store_option);
+
+static ssize_t bonding_show_min_links(struct device *d,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%u\n", bond->params.min_links);
+}
+static DEVICE_ATTR(min_links, S_IRUGO | S_IWUSR,
+		   bonding_show_min_links, bonding_sysfs_store_option);
+
+static ssize_t bonding_show_ad_select(struct device *d,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_AD_SELECT, bond->params.ad_select);
+
+	return sprintf(buf, "%s %d\n", val->string, bond->params.ad_select);
+}
+static DEVICE_ATTR(ad_select, S_IRUGO | S_IWUSR,
+		   bonding_show_ad_select, bonding_sysfs_store_option);
+
+/* Show and set the number of peer notifications to send after a failover event. */
+static ssize_t bonding_show_num_peer_notif(struct device *d,
+					   struct device_attribute *attr,
+					   char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	return sprintf(buf, "%d\n", bond->params.num_peer_notif);
+}
+
+static ssize_t bonding_store_num_peer_notif(struct device *d,
+					    struct device_attribute *attr,
+					    const char *buf, size_t count)
+{
+	struct bonding *bond = to_bond(d);
+	int ret;
+
+	ret = bond_opt_tryset_rtnl(bond, BOND_OPT_NUM_PEER_NOTIF, (char *)buf);
+	if (!ret)
+		ret = count;
+
+	return ret;
+}
+static DEVICE_ATTR(num_grat_arp, S_IRUGO | S_IWUSR,
+		   bonding_show_num_peer_notif, bonding_store_num_peer_notif);
+static DEVICE_ATTR(num_unsol_na, S_IRUGO | S_IWUSR,
+		   bonding_show_num_peer_notif, bonding_store_num_peer_notif);
+
+/* Show the MII monitor interval. */
+static ssize_t bonding_show_miimon(struct device *d,
+				   struct device_attribute *attr,
+				   char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.miimon);
+}
+static DEVICE_ATTR(miimon, S_IRUGO | S_IWUSR,
+		   bonding_show_miimon, bonding_sysfs_store_option);
+
+/* Show the primary slave. */
+static ssize_t bonding_show_primary(struct device *d,
+				    struct device_attribute *attr,
+				    char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	struct slave *primary;
+	int count = 0;
+
+	rcu_read_lock();
+	primary = rcu_dereference(bond->primary_slave);
+	if (primary)
+		count = sprintf(buf, "%s\n", primary->dev->name);
+	rcu_read_unlock();
+
+	return count;
+}
+static DEVICE_ATTR(primary, S_IRUGO | S_IWUSR,
+		   bonding_show_primary, bonding_sysfs_store_option);
+
+/* Show the primary_reselect flag. */
+static ssize_t bonding_show_primary_reselect(struct device *d,
+					     struct device_attribute *attr,
+					     char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	const struct bond_opt_value *val;
+
+	val = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
+			       bond->params.primary_reselect);
+
+	return sprintf(buf, "%s %d\n",
+		       val->string, bond->params.primary_reselect);
+}
+static DEVICE_ATTR(primary_reselect, S_IRUGO | S_IWUSR,
+		   bonding_show_primary_reselect, bonding_sysfs_store_option);
+
+/* Show the use_carrier flag. */
+static ssize_t bonding_show_carrier(struct device *d,
+				    struct device_attribute *attr,
+				    char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.use_carrier);
+}
+static DEVICE_ATTR(use_carrier, S_IRUGO | S_IWUSR,
+		   bonding_show_carrier, bonding_sysfs_store_option);
+
+
+/* Show currently active_slave. */
+static ssize_t bonding_show_active_slave(struct device *d,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	struct net_device *slave_dev;
+	int count = 0;
+
+	rcu_read_lock();
+	slave_dev = bond_option_active_slave_get_rcu(bond);
+	if (slave_dev)
+		count = sprintf(buf, "%s\n", slave_dev->name);
+	rcu_read_unlock();
+
+	return count;
+}
+static DEVICE_ATTR(active_slave, S_IRUGO | S_IWUSR,
+		   bonding_show_active_slave, bonding_sysfs_store_option);
+
+/* Show link status of the bond interface. */
+static ssize_t bonding_show_mii_status(struct device *d,
+				       struct device_attribute *attr,
+				       char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	bool active = !!rcu_access_pointer(bond->curr_active_slave);
+
+	return sprintf(buf, "%s\n", active ? "up" : "down");
+}
+static DEVICE_ATTR(mii_status, S_IRUGO, bonding_show_mii_status, NULL);
+
+/* Show current 802.3ad aggregator ID. */
+static ssize_t bonding_show_ad_aggregator(struct device *d,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	int count = 0;
+	struct bonding *bond = to_bond(d);
+
+	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
+		struct ad_info ad_info;
+		count = sprintf(buf, "%d\n",
+				bond_3ad_get_active_agg_info(bond, &ad_info)
+				?  0 : ad_info.aggregator_id);
+	}
+
+	return count;
+}
+static DEVICE_ATTR(ad_aggregator, S_IRUGO, bonding_show_ad_aggregator, NULL);
+
+
+/* Show number of active 802.3ad ports. */
+static ssize_t bonding_show_ad_num_ports(struct device *d,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	int count = 0;
+	struct bonding *bond = to_bond(d);
+
+	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
+		struct ad_info ad_info;
+		count = sprintf(buf, "%d\n",
+				bond_3ad_get_active_agg_info(bond, &ad_info)
+				?  0 : ad_info.ports);
+	}
+
+	return count;
+}
+static DEVICE_ATTR(ad_num_ports, S_IRUGO, bonding_show_ad_num_ports, NULL);
+
+
+/* Show current 802.3ad actor key. */
+static ssize_t bonding_show_ad_actor_key(struct device *d,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	int count = 0;
+	struct bonding *bond = to_bond(d);
+
+	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
+		struct ad_info ad_info;
+		count = sprintf(buf, "%d\n",
+				bond_3ad_get_active_agg_info(bond, &ad_info)
+				?  0 : ad_info.actor_key);
+	}
+
+	return count;
+}
+static DEVICE_ATTR(ad_actor_key, S_IRUGO, bonding_show_ad_actor_key, NULL);
+
+
+/* Show current 802.3ad partner key. */
+static ssize_t bonding_show_ad_partner_key(struct device *d,
+					   struct device_attribute *attr,
+					   char *buf)
+{
+	int count = 0;
+	struct bonding *bond = to_bond(d);
+
+	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
+		struct ad_info ad_info;
+		count = sprintf(buf, "%d\n",
+				bond_3ad_get_active_agg_info(bond, &ad_info)
+				?  0 : ad_info.partner_key);
+	}
+
+	return count;
+}
+static DEVICE_ATTR(ad_partner_key, S_IRUGO, bonding_show_ad_partner_key, NULL);
+
+
+/* Show current 802.3ad partner mac. */
+static ssize_t bonding_show_ad_partner_mac(struct device *d,
+					   struct device_attribute *attr,
+					   char *buf)
+{
+	int count = 0;
+	struct bonding *bond = to_bond(d);
+
+	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
+		struct ad_info ad_info;
+		if (!bond_3ad_get_active_agg_info(bond, &ad_info))
+			count = sprintf(buf, "%pM\n", ad_info.partner_system);
+	}
+
+	return count;
+}
+static DEVICE_ATTR(ad_partner_mac, S_IRUGO, bonding_show_ad_partner_mac, NULL);
+
+/* Show the queue_ids of the slaves in the current bond. */
+static ssize_t bonding_show_queue_id(struct device *d,
+				     struct device_attribute *attr,
+				     char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	struct list_head *iter;
+	struct slave *slave;
+	int res = 0;
+
+	if (!rtnl_trylock())
+		return restart_syscall();
+
+	bond_for_each_slave(bond, slave, iter) {
+		if (res > (PAGE_SIZE - IFNAMSIZ - 6)) {
+			/* not enough space for another interface_name:queue_id pair */
+			if ((PAGE_SIZE - res) > 10)
+				res = PAGE_SIZE - 10;
+			res += sprintf(buf + res, "++more++ ");
+			break;
+		}
+		res += sprintf(buf + res, "%s:%d ",
+			       slave->dev->name, slave->queue_id);
+	}
+	if (res)
+		buf[res-1] = '\n'; /* eat the leftover space */
+
+	rtnl_unlock();
+
+	return res;
+}
+static DEVICE_ATTR(queue_id, S_IRUGO | S_IWUSR, bonding_show_queue_id,
+		   bonding_sysfs_store_option);
+
+
+/* Show the all_slaves_active flag. */
+static ssize_t bonding_show_slaves_active(struct device *d,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.all_slaves_active);
+}
+static DEVICE_ATTR(all_slaves_active, S_IRUGO | S_IWUSR,
+		   bonding_show_slaves_active, bonding_sysfs_store_option);
+
+/* Show the number of IGMP membership reports to send on link failure */
+static ssize_t bonding_show_resend_igmp(struct device *d,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.resend_igmp);
+}
+static DEVICE_ATTR(resend_igmp, S_IRUGO | S_IWUSR,
+		   bonding_show_resend_igmp, bonding_sysfs_store_option);
+
+
+static ssize_t bonding_show_lp_interval(struct device *d,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct bonding *bond = to_bond(d);
+
+	return sprintf(buf, "%d\n", bond->params.lp_interval);
+}
+static DEVICE_ATTR(lp_interval, S_IRUGO | S_IWUSR,
+		   bonding_show_lp_interval, bonding_sysfs_store_option);
+
+static ssize_t bonding_show_tlb_dynamic_lb(struct device *d,
+					   struct device_attribute *attr,
+					   char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	return sprintf(buf, "%d\n", bond->params.tlb_dynamic_lb);
+}
+static DEVICE_ATTR(tlb_dynamic_lb, S_IRUGO | S_IWUSR,
+		   bonding_show_tlb_dynamic_lb, bonding_sysfs_store_option);
+
+static ssize_t bonding_show_packets_per_slave(struct device *d,
+					      struct device_attribute *attr,
+					      char *buf)
+{
+	struct bonding *bond = to_bond(d);
+	unsigned int packets_per_slave = bond->params.packets_per_slave;
+
+	return sprintf(buf, "%u\n", packets_per_slave);
+}
+static DEVICE_ATTR(packets_per_slave, S_IRUGO | S_IWUSR,
+		   bonding_show_packets_per_slave, bonding_sysfs_store_option);
+
+static struct attribute *per_bond_attrs[] = {
+	&dev_attr_slaves.attr,
+	&dev_attr_mode.attr,
+	&dev_attr_fail_over_mac.attr,
+	&dev_attr_arp_validate.attr,
+	&dev_attr_arp_all_targets.attr,
+	&dev_attr_arp_interval.attr,
+	&dev_attr_arp_ip_target.attr,
+	&dev_attr_downdelay.attr,
+	&dev_attr_updelay.attr,
+	&dev_attr_lacp_rate.attr,
+	&dev_attr_ad_select.attr,
+	&dev_attr_xmit_hash_policy.attr,
+	&dev_attr_num_grat_arp.attr,
+	&dev_attr_num_unsol_na.attr,
+	&dev_attr_miimon.attr,
+	&dev_attr_primary.attr,
+	&dev_attr_primary_reselect.attr,
+	&dev_attr_use_carrier.attr,
+	&dev_attr_active_slave.attr,
+	&dev_attr_mii_status.attr,
+	&dev_attr_ad_aggregator.attr,
+	&dev_attr_ad_num_ports.attr,
+	&dev_attr_ad_actor_key.attr,
+	&dev_attr_ad_partner_key.attr,
+	&dev_attr_ad_partner_mac.attr,
+	&dev_attr_queue_id.attr,
+	&dev_attr_all_slaves_active.attr,
+	&dev_attr_resend_igmp.attr,
+	&dev_attr_min_links.attr,
+	&dev_attr_lp_interval.attr,
+	&dev_attr_packets_per_slave.attr,
+	&dev_attr_tlb_dynamic_lb.attr,
+	NULL,
+};
+
+static struct attribute_group bonding_group = {
+	.name = "bonding",
+	.attrs = per_bond_attrs,
+};
+
+/* Initialize sysfs.  This sets up the bonding_masters file in
+ * /sys/class/net.
+ */
+int bond_create_sysfs(struct bond_net *bn)
+{
+	int ret;
+
+	bn->class_attr_bonding_masters = class_attr_bonding_masters;
+	sysfs_attr_init(&bn->class_attr_bonding_masters.attr);
+
+	ret = netdev_class_create_file_ns(&bn->class_attr_bonding_masters,
+					  bn->net);
+	/* Permit multiple loads of the module by ignoring failures to
+	 * create the bonding_masters sysfs file.  Bonding devices
+	 * created by second or subsequent loads of the module will
+	 * not be listed in, or controllable by, bonding_masters, but
+	 * will have the usual "bonding" sysfs directory.
+	 *
+	 * This is done to preserve backwards compatibility for
+	 * initscripts/sysconfig, which load bonding multiple times to
+	 * configure multiple bonding devices.
+	 */
+	if (ret == -EEXIST) {
+		/* Is someone being kinky and naming a device bonding_master? */
+		if (__dev_get_by_name(bn->net,
+				      class_attr_bonding_masters.attr.name))
+			pr_err("network device named %s already exists in sysfs\n",
+			       class_attr_bonding_masters.attr.name);
+		ret = 0;
+	}
+
+	return ret;
+
+}
+
+/* Remove /sys/class/net/bonding_masters. */
+void bond_destroy_sysfs(struct bond_net *bn)
+{
+	netdev_class_remove_file_ns(&bn->class_attr_bonding_masters, bn->net);
+}
+
+/* Initialize sysfs for each bond.  This sets up and registers
+ * the 'bondctl' directory for each individual bond under /sys/class/net.
+ */
+void bond_prepare_sysfs_group(struct bonding *bond)
+{
+	bond->dev->sysfs_groups[0] = &bonding_group;
+}
+