[thirdparty/kernel/linux.git] / drivers / net / bonding / bond_procfs.c

// SPDX-License-Identifier: GPL-2.0
#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 (capable(CAP_NET_ADMIN)) {
			seq_printf(seq, "System priority: %d\n",
				   BOND_AD_INFO(bond).system.sys_priority);
			seq_printf(seq, "System MAC address: %pM\n",
				   &BOND_AD_INFO(bond).system.sys_mac_addr);

			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: %*phC\n",
		   slave->dev->addr_len, 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);

			if (capable(CAP_NET_ADMIN)) {
				seq_puts(seq, "details actor lacp pdu:\n");
				seq_printf(seq, "    system priority: %d\n",
					   port->actor_system_priority);
				seq_printf(seq, "    system mac address: %pM\n",
					   &port->actor_system);
				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, "    system mac address: %pM\n",
					   &port->partner_oper.system);
				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
b2441318	1	// SPDX-License-Identifier: GPL-2.0
bd33acc3	2	#include <linux/proc_fs.h>
ee40fa06	3	#include <linux/export.h>
bd33acc3 AW	4	#include <net/net_namespace.h>
bd33acc3 AW	5	#include <net/netns/generic.h>
1ef8019b	6	#include <net/bonding.h>
bd33acc3	7
73b5a6f2	8	#include "bonding_priv.h"
bd33acc3	9
bd33acc3 AW	10	static void bond_info_seq_start(struct seq_file seq, loff_t *pos)
bd33acc3 AW	11	__acquires(RCU)
bd33acc3 AW	12	{
bd33acc3 AW	13	struct bonding *bond = seq->private;
9caff1e7	14	struct list_head *iter;
bd33acc3	15	struct slave *slave;
9caff1e7	16	loff_t off = 0;
bd33acc3	17
bd33acc3	18	rcu_read_lock();
bd33acc3 AW	19
	20	if (*pos == 0)
	21	return SEQ_START_TOKEN;
	22
e9fe8efe	23	bond_for_each_slave_rcu(bond, slave, iter)
bd33acc3 AW	24	if (++off == *pos)
bd33acc3 AW	25	return slave;
bd33acc3 AW	26
	27	return NULL;
	28	}
	29
	30	static void bond_info_seq_next(struct seq_file seq, void v, loff_t pos)
	31	{
	32	struct bonding *bond = seq->private;
f9650845 VF	33	struct list_head *iter;
	34	struct slave *slave;
	35	bool found = false;
bd33acc3 AW	36
	37	++*pos;
	38	if (v == SEQ_START_TOKEN)
e9fe8efe	39	return bond_first_slave_rcu(bond);
bd33acc3	40
e9fe8efe	41	bond_for_each_slave_rcu(bond, slave, iter) {
f9650845 VF	42	if (found)
	43	return slave;
	44	if (slave == v)
	45	found = true;
	46	}
	47
	48	return NULL;
bd33acc3 AW	49	}
	50
	51	static void bond_info_seq_stop(struct seq_file seq, void v)
bd33acc3 AW	52	__releases(RCU)
bd33acc3 AW	53	{
bd33acc3 AW	54	rcu_read_unlock();
	55	}
	56
	57	static void bond_info_show_master(struct seq_file *seq)
	58	{
	59	struct bonding *bond = seq->private;
28f084cc	60	const struct bond_opt_value *optval;
059b47e8	61	struct slave curr, primary;
bd33acc3 AW	62	int i;
bd33acc3 AW	63
4335d60e	64	curr = rcu_dereference(bond->curr_active_slave);
bd33acc3 AW	65
bd33acc3 AW	66	seq_printf(seq, "Bonding Mode: %s",
01844098	67	bond_mode_name(BOND_MODE(bond)));
bd33acc3	68
01844098	69	if (BOND_MODE(bond) == BOND_MODE_ACTIVEBACKUP &&
1df6b6aa NA	70	bond->params.fail_over_mac) {
	71	optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
	72	bond->params.fail_over_mac);
	73	seq_printf(seq, " (fail_over_mac %s)", optval->string);
	74	}
bd33acc3 AW	75
	76	seq_printf(seq, "\n");
	77
d7021325	78	if (bond_mode_uses_xmit_hash(bond)) {
a4b32ce7 NA	79	optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
a4b32ce7 NA	80	bond->params.xmit_policy);
bd33acc3	81	seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
a4b32ce7	82	optval->string, bond->params.xmit_policy);
bd33acc3 AW	83	}
bd33acc3 AW	84
ec0865a9	85	if (bond_uses_primary(bond)) {
059b47e8	86	primary = rcu_dereference(bond->primary_slave);
bd33acc3	87	seq_printf(seq, "Primary Slave: %s",
059b47e8 NA	88	primary ? primary->dev->name : "None");
059b47e8 NA	89	if (primary) {
388d3a6d NA	90	optval = bond_opt_get_val(BOND_OPT_PRIMARY_RESELECT,
388d3a6d NA	91	bond->params.primary_reselect);
bd33acc3	92	seq_printf(seq, " (primary_reselect %s)",
388d3a6d NA	93	optval->string);
388d3a6d NA	94	}
bd33acc3 AW	95
	96	seq_printf(seq, "\nCurrently Active Slave: %s\n",
	97	(curr) ? curr->dev->name : "None");
	98	}
	99
	100	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
	101	"up" : "down");
	102	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
	103	seq_printf(seq, "Up Delay (ms): %d\n",
	104	bond->params.updelay * bond->params.miimon);
	105	seq_printf(seq, "Down Delay (ms): %d\n",
	106	bond->params.downdelay * bond->params.miimon);
	107
	108
	109	/* ARP information */
	110	if (bond->params.arp_interval > 0) {
	111	int printed = 0;
	112	seq_printf(seq, "ARP Polling Interval (ms): %d\n",
	113	bond->params.arp_interval);
	114
	115	seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
	116
	117	for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
	118	if (!bond->params.arp_targets[i])
	119	break;
	120	if (printed)
	121	seq_printf(seq, ",");
	122	seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
	123	printed = 1;
	124	}
	125	seq_printf(seq, "\n");
	126	}
	127
01844098	128	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
bd33acc3 AW	129	struct ad_info ad_info;
	130
	131	seq_puts(seq, "\n802.3ad info\n");
	132	seq_printf(seq, "LACP rate: %s\n",
	133	(bond->params.lacp_fast) ? "fast" : "slow");
655f8919	134	seq_printf(seq, "Min links: %d\n", bond->params.min_links);
9e5f5eeb NA	135	optval = bond_opt_get_val(BOND_OPT_AD_SELECT,
9e5f5eeb NA	136	bond->params.ad_select);
bd33acc3	137	seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
9e5f5eeb	138	optval->string);
4cd6b475 MB	139	if (capable(CAP_NET_ADMIN)) {
	140	seq_printf(seq, "System priority: %d\n",
	141	BOND_AD_INFO(bond).system.sys_priority);
	142	seq_printf(seq, "System MAC address: %pM\n",
	143	&BOND_AD_INFO(bond).system.sys_mac_addr);
	144
	145	if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
	146	seq_printf(seq,
	147	"bond %s has no active aggregator\n",
	148	bond->dev->name);
	149	} else {
	150	seq_printf(seq, "Active Aggregator Info:\n");
	151
	152	seq_printf(seq, "\tAggregator ID: %d\n",
	153	ad_info.aggregator_id);
	154	seq_printf(seq, "\tNumber of ports: %d\n",
	155	ad_info.ports);
	156	seq_printf(seq, "\tActor Key: %d\n",
	157	ad_info.actor_key);
	158	seq_printf(seq, "\tPartner Key: %d\n",
	159	ad_info.partner_key);
	160	seq_printf(seq, "\tPartner Mac Address: %pM\n",
	161	ad_info.partner_system);
	162	}
bd33acc3 AW	163	}
	164	}
	165	}
	166
	167	static void bond_info_show_slave(struct seq_file *seq,
	168	const struct slave *slave)
	169	{
	170	struct bonding *bond = seq->private;
	171
	172	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
df2bcc4a	173	seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
589665f5	174	if (slave->speed == SPEED_UNKNOWN)
98f41f69 WP	175	seq_printf(seq, "Speed: %s\n", "Unknown");
	176	else
	177	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	178
589665f5	179	if (slave->duplex == DUPLEX_UNKNOWN)
98f41f69 WP	180	seq_printf(seq, "Duplex: %s\n", "Unknown");
	181	else
	182	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	183
bd33acc3 AW	184	seq_printf(seq, "Link Failure Count: %u\n",
	185	slave->link_failure_count);
	186
faeeb317 JW	187	seq_printf(seq, "Permanent HW addr: %*phC\n",
faeeb317 JW	188	slave->dev->addr_len, slave->perm_hwaddr);
14c9551a	189	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
bd33acc3	190
01844098	191	if (BOND_MODE(bond) == BOND_MODE_8023AD) {
14c9551a MB	192	const struct port *port = &SLAVE_AD_INFO(slave)->port;
14c9551a MB	193	const struct aggregator *agg = port->aggregator;
bd33acc3	194
14c9551a	195	if (agg) {
bd33acc3 AW	196	seq_printf(seq, "Aggregator ID: %d\n",
bd33acc3 AW	197	agg->aggregator_identifier);
14c9551a MB	198	seq_printf(seq, "Actor Churn State: %s\n",
	199	bond_3ad_churn_desc(port->sm_churn_actor_state));
	200	seq_printf(seq, "Partner Churn State: %s\n",
	201	bond_3ad_churn_desc(port->sm_churn_partner_state));
	202	seq_printf(seq, "Actor Churned Count: %d\n",
	203	port->churn_actor_count);
	204	seq_printf(seq, "Partner Churned Count: %d\n",
	205	port->churn_partner_count);
	206
4cd6b475 MB	207	if (capable(CAP_NET_ADMIN)) {
	208	seq_puts(seq, "details actor lacp pdu:\n");
	209	seq_printf(seq, " system priority: %d\n",
	210	port->actor_system_priority);
	211	seq_printf(seq, " system mac address: %pM\n",
	212	&port->actor_system);
	213	seq_printf(seq, " port key: %d\n",
	214	port->actor_oper_port_key);
	215	seq_printf(seq, " port priority: %d\n",
	216	port->actor_port_priority);
	217	seq_printf(seq, " port number: %d\n",
	218	port->actor_port_number);
	219	seq_printf(seq, " port state: %d\n",
	220	port->actor_oper_port_state);
	221
	222	seq_puts(seq, "details partner lacp pdu:\n");
	223	seq_printf(seq, " system priority: %d\n",
	224	port->partner_oper.system_priority);
	225	seq_printf(seq, " system mac address: %pM\n",
	226	&port->partner_oper.system);
	227	seq_printf(seq, " oper key: %d\n",
	228	port->partner_oper.key);
	229	seq_printf(seq, " port priority: %d\n",
	230	port->partner_oper.port_priority);
	231	seq_printf(seq, " port number: %d\n",
	232	port->partner_oper.port_number);
	233	seq_printf(seq, " port state: %d\n",
	234	port->partner_oper.port_state);
	235	}
14c9551a	236	} else {
bd33acc3	237	seq_puts(seq, "Aggregator ID: N/A\n");
14c9551a	238	}
bd33acc3	239	}
bd33acc3 AW	240	}
	241
	242	static int bond_info_seq_show(struct seq_file seq, void v)
	243	{
	244	if (v == SEQ_START_TOKEN) {
	245	seq_printf(seq, "%s\n", bond_version);
	246	bond_info_show_master(seq);
	247	} else
	248	bond_info_show_slave(seq, v);
	249
	250	return 0;
	251	}
	252
	253	static const struct seq_operations bond_info_seq_ops = {
	254	.start = bond_info_seq_start,
	255	.next = bond_info_seq_next,
	256	.stop = bond_info_seq_stop,
	257	.show = bond_info_seq_show,
	258	};
	259
	260	static int bond_info_open(struct inode inode, struct file file)
	261	{
	262	struct seq_file *seq;
bd33acc3 AW	263	int res;
	264
	265	res = seq_open(file, &bond_info_seq_ops);
	266	if (!res) {
	267	/* recover the pointer buried in proc_dir_entry data */
	268	seq = file->private_data;
d9dda78b	269	seq->private = PDE_DATA(inode);
bd33acc3 AW	270	}
	271
	272	return res;
	273	}
	274
	275	static const struct file_operations bond_info_fops = {
	276	.owner = THIS_MODULE,
	277	.open = bond_info_open,
	278	.read = seq_read,
	279	.llseek = seq_lseek,
	280	.release = seq_release,
	281	};
	282
	283	void bond_create_proc_entry(struct bonding *bond)
	284	{
	285	struct net_device *bond_dev = bond->dev;
	286	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	287
	288	if (bn->proc_dir) {
	289	bond->proc_entry = proc_create_data(bond_dev->name,
	290	S_IRUGO, bn->proc_dir,
	291	&bond_info_fops, bond);
	292	if (bond->proc_entry == NULL)
c735ee6c VF	293	netdev_warn(bond_dev, "Cannot create /proc/net/%s/%s\n",
c735ee6c VF	294	DRV_NAME, bond_dev->name);
bd33acc3 AW	295	else
	296	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
	297	}
	298	}
	299
	300	void bond_remove_proc_entry(struct bonding *bond)
	301	{
	302	struct net_device *bond_dev = bond->dev;
	303	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	304
	305	if (bn->proc_dir && bond->proc_entry) {
	306	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
	307	memset(bond->proc_file_name, 0, IFNAMSIZ);
	308	bond->proc_entry = NULL;
	309	}
	310	}
	311
	312	/* Create the bonding directory under /proc/net, if doesn't exist yet.
	313	* Caller must hold rtnl_lock.
	314	*/
	315	void __net_init bond_create_proc_dir(struct bond_net *bn)
	316	{
	317	if (!bn->proc_dir) {
	318	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
	319	if (!bn->proc_dir)
90194264	320	pr_warn("Warning: Cannot create /proc/net/%s\n",
91565ebb	321	DRV_NAME);
bd33acc3 AW	322	}
	323	}
	324
	325	/* Destroy the bonding directory under /proc/net, if empty.
	326	* Caller must hold rtnl_lock.
	327	*/
	328	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
	329	{
	330	if (bn->proc_dir) {
	331	remove_proc_entry(DRV_NAME, bn->net->proc_net);
	332	bn->proc_dir = NULL;
	333	}
	334	}