[linux-2.6-block.git] / drivers / net / bonding / bond_procfs.c

#include <linux/proc_fs.h>
#include <linux/export.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
#include <net/bonding.h>

#include "bonding_priv.h"

static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
	__acquires(RCU)
{
	struct bonding *bond = seq->private;
	struct list_head *iter;
	struct slave *slave;
	loff_t off = 0;

	rcu_read_lock();

	if (*pos == 0)
		return SEQ_START_TOKEN;

	bond_for_each_slave_rcu(bond, slave, iter)
		if (++off == *pos)
			return slave;

	return NULL;
}

static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
{
	struct bonding *bond = seq->private;
	struct list_head *iter;
	struct slave *slave;
	bool found = false;

	++*pos;
	if (v == SEQ_START_TOKEN)
		return bond_first_slave_rcu(bond);

	bond_for_each_slave_rcu(bond, slave, iter) {
		if (found)
			return slave;
		if (slave == v)
			found = true;
	}

	return NULL;
}

static void bond_info_seq_stop(struct seq_file *seq, void *v)
	__releases(RCU)
{
	rcu_read_unlock();
}

static void bond_info_show_master(struct seq_file *seq)
{
	struct bonding *bond = seq->private;
	const struct bond_opt_value *optval;
	struct slave *curr, *primary;
	int i;

	curr = rcu_dereference(bond->curr_active_slave);

	seq_printf(seq, "Bonding Mode: %s",
		   bond_mode_name(BOND_MODE(bond)));

	if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
	    bond->params.fail_over_mac) {
		optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
					  bond->params.fail_over_mac);
		seq_printf(seq, " (fail_over_mac %s)", optval->string);
	}

	seq_printf(seq, "\n");

	if (bond_mode_uses_xmit_hash(bond)) {
		optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
					  bond->params.xmit_policy);
		seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
			   optval->string, bond->params.xmit_policy);
	}

	if (bond_uses_primary(bond)) {
		primary = rcu_dereference(bond->primary_slave);
		seq_printf(seq, "Primary Slave: %s",
			   primary ? primary->dev->name : "None");
		if (primary) {
			optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
						  bond->params.primary_reselect);
			seq_printf(seq, " (primary_reselect %s)",
				   optval->string);
		}

		seq_printf(seq, "\nCurrently Active Slave: %s\n",
			   (curr) ? curr->dev->name : "None");
	}

	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
		   "up" : "down");
	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
	seq_printf(seq, "Up Delay (ms): %d\n",
		   bond->params.updelay * bond->params.miimon);
	seq_printf(seq, "Down Delay (ms): %d\n",
		   bond->params.downdelay * bond->params.miimon);


	/* ARP information */
	if (bond->params.arp_interval > 0) {
		int printed = 0;
		seq_printf(seq, "ARP Polling Interval (ms): %d\n",
				bond->params.arp_interval);

		seq_printf(seq, "ARP IP target/s (n.n.n.n form):");

		for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
			if (!bond->params.arp_targets[i])
				break;
			if (printed)
				seq_printf(seq, ",");
			seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
			printed = 1;
		}
		seq_printf(seq, "\n");
	}

	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
		struct ad_info ad_info;

		seq_puts(seq, "\n802.3ad info\n");
		seq_printf(seq, "LACP rate: %s\n",
			   (bond->params.lacp_fast) ? "fast" : "slow");
		seq_printf(seq, "Min links: %d\n", bond->params.min_links);
		optval = bond_opt_get_val(BOND_OPT_AD_SELECT,
					  bond->params.ad_select);
		seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
			   optval->string);

		if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
			seq_printf(seq, "bond %s has no active aggregator\n",
				   bond->dev->name);
		} else {
			seq_printf(seq, "Active Aggregator Info:\n");

			seq_printf(seq, "\tAggregator ID: %d\n",
				   ad_info.aggregator_id);
			seq_printf(seq, "\tNumber of ports: %d\n",
				   ad_info.ports);
			seq_printf(seq, "\tActor Key: %d\n",
				   ad_info.actor_key);
			seq_printf(seq, "\tPartner Key: %d\n",
				   ad_info.partner_key);
			seq_printf(seq, "\tPartner Mac Address: %pM\n",
				   ad_info.partner_system);
		}
	}
}

static void bond_info_show_slave(struct seq_file *seq,
				 const struct slave *slave)
{
	struct bonding *bond = seq->private;

	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
	seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
	if (slave->speed == SPEED_UNKNOWN)
		seq_printf(seq, "Speed: %s\n", "Unknown");
	else
		seq_printf(seq, "Speed: %d Mbps\n", slave->speed);

	if (slave->duplex == DUPLEX_UNKNOWN)
		seq_printf(seq, "Duplex: %s\n", "Unknown");
	else
		seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");

	seq_printf(seq, "Link Failure Count: %u\n",
		   slave->link_failure_count);

	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);

	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
		const struct port *port = &SLAVE_AD_INFO(slave)->port;
		const struct aggregator *agg = port->aggregator;

		if (agg) {
			seq_printf(seq, "Aggregator ID: %d\n",
				   agg->aggregator_identifier);
			seq_printf(seq, "Actor Churn State: %s\n",
				   bond_3ad_churn_desc(port->sm_churn_actor_state));
			seq_printf(seq, "Partner Churn State: %s\n",
				   bond_3ad_churn_desc(port->sm_churn_partner_state));
			seq_printf(seq, "Actor Churned Count: %d\n",
				   port->churn_actor_count);
			seq_printf(seq, "Partner Churned Count: %d\n",
				   port->churn_partner_count);

			seq_puts(seq, "details actor lacp pdu:\n");
			seq_printf(seq, "    system priority: %d\n",
				   port->actor_system_priority);
			seq_printf(seq, "    port key: %d\n",
				   port->actor_oper_port_key);
			seq_printf(seq, "    port priority: %d\n",
				   port->actor_port_priority);
			seq_printf(seq, "    port number: %d\n",
				   port->actor_port_number);
			seq_printf(seq, "    port state: %d\n",
				   port->actor_oper_port_state);

			seq_puts(seq, "details partner lacp pdu:\n");
			seq_printf(seq, "    system priority: %d\n",
				   port->partner_oper.system_priority);
			seq_printf(seq, "    oper key: %d\n",
				   port->partner_oper.key);
			seq_printf(seq, "    port priority: %d\n",
				   port->partner_oper.port_priority);
			seq_printf(seq, "    port number: %d\n",
				   port->partner_oper.port_number);
			seq_printf(seq, "    port state: %d\n",
				   port->partner_oper.port_state);
		} else {
			seq_puts(seq, "Aggregator ID: N/A\n");
		}
	}
}

static int bond_info_seq_show(struct seq_file *seq, void *v)
{
	if (v == SEQ_START_TOKEN) {
		seq_printf(seq, "%s\n", bond_version);
		bond_info_show_master(seq);
	} else
		bond_info_show_slave(seq, v);

	return 0;
}

static const struct seq_operations bond_info_seq_ops = {
	.start = bond_info_seq_start,
	.next  = bond_info_seq_next,
	.stop  = bond_info_seq_stop,
	.show  = bond_info_seq_show,
};

static int bond_info_open(struct inode *inode, struct file *file)
{
	struct seq_file *seq;
	int res;

	res = seq_open(file, &bond_info_seq_ops);
	if (!res) {
		/* recover the pointer buried in proc_dir_entry data */
		seq = file->private_data;
		seq->private = PDE_DATA(inode);
	}

	return res;
}

static const struct file_operations bond_info_fops = {
	.owner   = THIS_MODULE,
	.open    = bond_info_open,
	.read    = seq_read,
	.llseek  = seq_lseek,
	.release = seq_release,
};

void bond_create_proc_entry(struct bonding *bond)
{
	struct net_device *bond_dev = bond->dev;
	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);

	if (bn->proc_dir) {
		bond->proc_entry = proc_create_data(bond_dev->name,
						    S_IRUGO, bn->proc_dir,
						    &bond_info_fops, bond);
		if (bond->proc_entry == NULL)
			netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",
				    DRV_NAME, bond_dev->name);
		else
			memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
	}
}

void bond_remove_proc_entry(struct bonding *bond)
{
	struct net_device *bond_dev = bond->dev;
	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);

	if (bn->proc_dir && bond->proc_entry) {
		remove_proc_entry(bond->proc_file_name, bn->proc_dir);
		memset(bond->proc_file_name, 0, IFNAMSIZ);
		bond->proc_entry = NULL;
	}
}

/* Create the bonding directory under /proc/net, if doesn't exist yet.
 * Caller must hold rtnl_lock.
 */
void __net_init bond_create_proc_dir(struct bond_net *bn)
{
	if (!bn->proc_dir) {
		bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
		if (!bn->proc_dir)
			pr_warn("Warning: Cannot create /proc/net/%s\n",
				DRV_NAME);
	}
}

/* Destroy the bonding directory under /proc/net, if empty.
 * Caller must hold rtnl_lock.
 */
void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
{
	if (bn->proc_dir) {
		remove_proc_entry(DRV_NAME, bn->net->proc_net);
		bn->proc_dir = NULL;
	}
}
Commit	Line	Data
bd33acc3	1	#include <linux/proc_fs.h>
ee40fa06	2	#include <linux/export.h>
bd33acc3 AW	3	#include <net/net_namespace.h>
bd33acc3 AW	4	#include <net/netns/generic.h>
1ef8019b	5	#include <net/bonding.h>
bd33acc3	6
73b5a6f2	7	#include "bonding_priv.h"
bd33acc3	8
bd33acc3 AW	9	static void bond_info_seq_start(struct seq_file seq, loff_t *pos)
bd33acc3 AW	10	__acquires(RCU)
bd33acc3 AW	11	{
bd33acc3 AW	12	struct bonding *bond = seq->private;
9caff1e7	13	struct list_head *iter;
bd33acc3	14	struct slave *slave;
9caff1e7	15	loff_t off = 0;
bd33acc3	16
bd33acc3	17	rcu_read_lock();
bd33acc3 AW	18
	19	if (*pos == 0)
	20	return SEQ_START_TOKEN;
	21
e9fe8efe	22	bond_for_each_slave_rcu(bond, slave, iter)
bd33acc3 AW	23	if (++off == *pos)
bd33acc3 AW	24	return slave;
bd33acc3 AW	25
	26	return NULL;
	27	}
	28
	29	static void bond_info_seq_next(struct seq_file seq, void v, loff_t pos)
	30	{
	31	struct bonding *bond = seq->private;
f9650845 VF	32	struct list_head *iter;
	33	struct slave *slave;
	34	bool found = false;
bd33acc3 AW	35
	36	++*pos;
	37	if (v == SEQ_START_TOKEN)
e9fe8efe	38	return bond_first_slave_rcu(bond);
bd33acc3	39
e9fe8efe	40	bond_for_each_slave_rcu(bond, slave, iter) {
f9650845 VF	41	if (found)
	42	return slave;
	43	if (slave == v)
	44	found = true;
	45	}
	46
	47	return NULL;
bd33acc3 AW	48	}
	49
	50	static void bond_info_seq_stop(struct seq_file seq, void v)
bd33acc3 AW	51	__releases(RCU)
bd33acc3 AW	52	{
bd33acc3 AW	53	rcu_read_unlock();
	54	}
	55
	56	static void bond_info_show_master(struct seq_file *seq)
	57	{
	58	struct bonding *bond = seq->private;
28f084cc	59	const struct bond_opt_value *optval;
059b47e8	60	struct slave curr, primary;
bd33acc3 AW	61	int i;
bd33acc3 AW	62
4335d60e	63	curr = rcu_dereference(bond->curr_active_slave);
bd33acc3 AW	64
bd33acc3 AW	65	seq_printf(seq, "Bonding Mode: %s",
01844098	66	bond_mode_name(BOND_MODE(bond)));
bd33acc3	67
01844098	68	if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
1df6b6aa NA	69	bond->params.fail_over_mac) {
	70	optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
	71	bond->params.fail_over_mac);
	72	seq_printf(seq, " (fail_over_mac %s)", optval->string);
	73	}
bd33acc3 AW	74
	75	seq_printf(seq, "\n");
	76
d7021325	77	if (bond_mode_uses_xmit_hash(bond)) {
a4b32ce7 NA	78	optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
a4b32ce7 NA	79	bond->params.xmit_policy);
bd33acc3	80	seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
a4b32ce7	81	optval->string, bond->params.xmit_policy);
bd33acc3 AW	82	}
bd33acc3 AW	83
ec0865a9	84	if (bond_uses_primary(bond)) {
059b47e8	85	primary = rcu_dereference(bond->primary_slave);
bd33acc3	86	seq_printf(seq, "Primary Slave: %s",
059b47e8 NA	87	primary ? primary->dev->name : "None");
059b47e8 NA	88	if (primary) {
388d3a6d NA	89	optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
388d3a6d NA	90	bond->params.primary_reselect);
bd33acc3	91	seq_printf(seq, " (primary_reselect %s)",
388d3a6d NA	92	optval->string);
388d3a6d NA	93	}
bd33acc3 AW	94
	95	seq_printf(seq, "\nCurrently Active Slave: %s\n",
	96	(curr) ? curr->dev->name : "None");
	97	}
	98
	99	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
	100	"up" : "down");
	101	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
	102	seq_printf(seq, "Up Delay (ms): %d\n",
	103	bond->params.updelay * bond->params.miimon);
	104	seq_printf(seq, "Down Delay (ms): %d\n",
	105	bond->params.downdelay * bond->params.miimon);
	106
	107
	108	/* ARP information */
	109	if (bond->params.arp_interval > 0) {
	110	int printed = 0;
	111	seq_printf(seq, "ARP Polling Interval (ms): %d\n",
	112	bond->params.arp_interval);
	113
	114	seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
	115
	116	for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
	117	if (!bond->params.arp_targets[i])
	118	break;
	119	if (printed)
	120	seq_printf(seq, ",");
	121	seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
	122	printed = 1;
	123	}
	124	seq_printf(seq, "\n");
	125	}
	126
01844098	127	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
bd33acc3 AW	128	struct ad_info ad_info;
	129
	130	seq_puts(seq, "\n802.3ad info\n");
	131	seq_printf(seq, "LACP rate: %s\n",
	132	(bond->params.lacp_fast) ? "fast" : "slow");
655f8919	133	seq_printf(seq, "Min links: %d\n", bond->params.min_links);
9e5f5eeb NA	134	optval = bond_opt_get_val(BOND_OPT_AD_SELECT,
9e5f5eeb NA	135	bond->params.ad_select);
bd33acc3	136	seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
9e5f5eeb	137	optval->string);
bd33acc3	138
318debd8	139	if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
bd33acc3 AW	140	seq_printf(seq, "bond %s has no active aggregator\n",
	141	bond->dev->name);
	142	} else {
	143	seq_printf(seq, "Active Aggregator Info:\n");
	144
	145	seq_printf(seq, "\tAggregator ID: %d\n",
	146	ad_info.aggregator_id);
	147	seq_printf(seq, "\tNumber of ports: %d\n",
	148	ad_info.ports);
	149	seq_printf(seq, "\tActor Key: %d\n",
	150	ad_info.actor_key);
	151	seq_printf(seq, "\tPartner Key: %d\n",
	152	ad_info.partner_key);
	153	seq_printf(seq, "\tPartner Mac Address: %pM\n",
	154	ad_info.partner_system);
	155	}
	156	}
	157	}
	158
	159	static void bond_info_show_slave(struct seq_file *seq,
	160	const struct slave *slave)
	161	{
	162	struct bonding *bond = seq->private;
	163
	164	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
df2bcc4a	165	seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
589665f5	166	if (slave->speed == SPEED_UNKNOWN)
98f41f69 WP	167	seq_printf(seq, "Speed: %s\n", "Unknown");
	168	else
	169	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	170
589665f5	171	if (slave->duplex == DUPLEX_UNKNOWN)
98f41f69 WP	172	seq_printf(seq, "Duplex: %s\n", "Unknown");
	173	else
	174	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	175
bd33acc3 AW	176	seq_printf(seq, "Link Failure Count: %u\n",
	177	slave->link_failure_count);
	178
	179	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
14c9551a	180	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
bd33acc3	181
01844098	182	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
14c9551a MB	183	const struct port *port = &SLAVE_AD_INFO(slave)->port;
14c9551a MB	184	const struct aggregator *agg = port->aggregator;
bd33acc3	185
14c9551a	186	if (agg) {
bd33acc3 AW	187	seq_printf(seq, "Aggregator ID: %d\n",
bd33acc3 AW	188	agg->aggregator_identifier);
14c9551a MB	189	seq_printf(seq, "Actor Churn State: %s\n",
	190	bond_3ad_churn_desc(port->sm_churn_actor_state));
	191	seq_printf(seq, "Partner Churn State: %s\n",
	192	bond_3ad_churn_desc(port->sm_churn_partner_state));
	193	seq_printf(seq, "Actor Churned Count: %d\n",
	194	port->churn_actor_count);
	195	seq_printf(seq, "Partner Churned Count: %d\n",
	196	port->churn_partner_count);
	197
	198	seq_puts(seq, "details actor lacp pdu:\n");
	199	seq_printf(seq, " system priority: %d\n",
	200	port->actor_system_priority);
	201	seq_printf(seq, " port key: %d\n",
	202	port->actor_oper_port_key);
	203	seq_printf(seq, " port priority: %d\n",
	204	port->actor_port_priority);
	205	seq_printf(seq, " port number: %d\n",
	206	port->actor_port_number);
	207	seq_printf(seq, " port state: %d\n",
	208	port->actor_oper_port_state);
	209
	210	seq_puts(seq, "details partner lacp pdu:\n");
	211	seq_printf(seq, " system priority: %d\n",
	212	port->partner_oper.system_priority);
	213	seq_printf(seq, " oper key: %d\n",
	214	port->partner_oper.key);
	215	seq_printf(seq, " port priority: %d\n",
	216	port->partner_oper.port_priority);
	217	seq_printf(seq, " port number: %d\n",
	218	port->partner_oper.port_number);
	219	seq_printf(seq, " port state: %d\n",
	220	port->partner_oper.port_state);
	221	} else {
bd33acc3	222	seq_puts(seq, "Aggregator ID: N/A\n");
14c9551a	223	}
bd33acc3	224	}
bd33acc3 AW	225	}
	226
	227	static int bond_info_seq_show(struct seq_file seq, void v)
	228	{
	229	if (v == SEQ_START_TOKEN) {
	230	seq_printf(seq, "%s\n", bond_version);
	231	bond_info_show_master(seq);
	232	} else
	233	bond_info_show_slave(seq, v);
	234
	235	return 0;
	236	}
	237
	238	static const struct seq_operations bond_info_seq_ops = {
	239	.start = bond_info_seq_start,
	240	.next = bond_info_seq_next,
	241	.stop = bond_info_seq_stop,
	242	.show = bond_info_seq_show,
	243	};
	244
	245	static int bond_info_open(struct inode inode, struct file file)
	246	{
	247	struct seq_file *seq;
bd33acc3 AW	248	int res;
	249
	250	res = seq_open(file, &bond_info_seq_ops);
	251	if (!res) {
	252	/* recover the pointer buried in proc_dir_entry data */
	253	seq = file->private_data;
d9dda78b	254	seq->private = PDE_DATA(inode);
bd33acc3 AW	255	}
	256
	257	return res;
	258	}
	259
	260	static const struct file_operations bond_info_fops = {
	261	.owner = THIS_MODULE,
	262	.open = bond_info_open,
	263	.read = seq_read,
	264	.llseek = seq_lseek,
	265	.release = seq_release,
	266	};
	267
	268	void bond_create_proc_entry(struct bonding *bond)
	269	{
	270	struct net_device *bond_dev = bond->dev;
	271	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	272
	273	if (bn->proc_dir) {
	274	bond->proc_entry = proc_create_data(bond_dev->name,
	275	S_IRUGO, bn->proc_dir,
	276	&bond_info_fops, bond);
	277	if (bond->proc_entry == NULL)
c735ee6c VF	278	netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",
c735ee6c VF	279	DRV_NAME, bond_dev->name);
bd33acc3 AW	280	else
	281	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
	282	}
	283	}
	284
	285	void bond_remove_proc_entry(struct bonding *bond)
	286	{
	287	struct net_device *bond_dev = bond->dev;
	288	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	289
	290	if (bn->proc_dir && bond->proc_entry) {
	291	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
	292	memset(bond->proc_file_name, 0, IFNAMSIZ);
	293	bond->proc_entry = NULL;
	294	}
	295	}
	296
	297	/* Create the bonding directory under /proc/net, if doesn't exist yet.
	298	* Caller must hold rtnl_lock.
	299	*/
	300	void __net_init bond_create_proc_dir(struct bond_net *bn)
	301	{
	302	if (!bn->proc_dir) {
	303	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
	304	if (!bn->proc_dir)
90194264	305	pr_warn("Warning: Cannot create /proc/net/%s\n",
91565ebb	306	DRV_NAME);
bd33acc3 AW	307	}
	308	}
	309
	310	/* Destroy the bonding directory under /proc/net, if empty.
	311	* Caller must hold rtnl_lock.
	312	*/
	313	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
	314	{
	315	if (bn->proc_dir) {
	316	remove_proc_entry(DRV_NAME, bn->net->proc_net);
	317	bn->proc_dir = NULL;
	318	}
	319	}