[mirror_ubuntu-focal-kernel.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 "bonding.h"


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

	/* make sure the bond won't be taken away */
	rcu_read_lock();
	read_lock(&bond->lock);

	if (*pos == 0)
		return SEQ_START_TOKEN;

	bond_for_each_slave(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(bond);

	if (bond_is_last_slave(bond, v))
		return NULL;

	bond_for_each_slave(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(&bond->lock)
	__releases(RCU)
{
	struct bonding *bond = seq->private;

	read_unlock(&bond->lock);
	rcu_read_unlock();
}

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

	read_lock(&bond->curr_slave_lock);
	curr = bond->curr_active_slave;
	read_unlock(&bond->curr_slave_lock);

	seq_printf(seq, "Bonding Mode: %s",
		   bond_mode_name(bond->params.mode));

	if (bond->params.mode == 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->params.mode == BOND_MODE_XOR ||
		bond->params.mode == BOND_MODE_8023AD) {
		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 (USES_PRIMARY(bond->params.mode)) {
		seq_printf(seq, "Primary Slave: %s",
			   (bond->primary_slave) ?
			   bond->primary_slave->dev->name : "None");
		if (bond->primary_slave)
			seq_printf(seq, " (primary_reselect %s)",
		   pri_reselect_tbl[bond->params.primary_reselect].modename);

		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->params.mode == 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);
		seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
			   ad_select_tbl[bond->params.ad_select].modename);

		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);

	if (bond->params.mode == BOND_MODE_8023AD) {
		const struct aggregator *agg
			= SLAVE_AD_INFO(slave).port.aggregator;

		if (agg)
			seq_printf(seq, "Aggregator ID: %d\n",
				   agg->aggregator_identifier);
		else
			seq_puts(seq, "Aggregator ID: N/A\n");
	}
	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
}

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)
			pr_warning("Warning: 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_warning("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>
	4	#include <net/netns/generic.h>
	5	#include "bonding.h"
	6
	7
bd33acc3 AW	8	static void bond_info_seq_start(struct seq_file seq, loff_t *pos)
	9	__acquires(RCU)
	10	__acquires(&bond->lock)
	11	{
	12	struct bonding *bond = seq->private;
9caff1e7	13	struct list_head *iter;
bd33acc3	14	struct slave *slave;
9caff1e7	15	loff_t off = 0;
bd33acc3 AW	16
	17	/* make sure the bond won't be taken away */
	18	rcu_read_lock();
	19	read_lock(&bond->lock);
	20
	21	if (*pos == 0)
	22	return SEQ_START_TOKEN;
	23
9caff1e7	24	bond_for_each_slave(bond, slave, iter)
bd33acc3 AW	25	if (++off == *pos)
bd33acc3 AW	26	return slave;
bd33acc3 AW	27
	28	return NULL;
	29	}
	30
	31	static void bond_info_seq_next(struct seq_file seq, void v, loff_t pos)
	32	{
	33	struct bonding *bond = seq->private;
f9650845 VF	34	struct list_head *iter;
	35	struct slave *slave;
	36	bool found = false;
bd33acc3 AW	37
	38	++*pos;
	39	if (v == SEQ_START_TOKEN)
dec1e90e	40	return bond_first_slave(bond);
bd33acc3	41
f9650845	42	if (bond_is_last_slave(bond, v))
dec1e90e	43	return NULL;
bd33acc3	44
f9650845 VF	45	bond_for_each_slave(bond, slave, iter) {
	46	if (found)
	47	return slave;
	48	if (slave == v)
	49	found = true;
	50	}
	51
	52	return NULL;
bd33acc3 AW	53	}
	54
	55	static void bond_info_seq_stop(struct seq_file seq, void v)
	56	__releases(&bond->lock)
	57	__releases(RCU)
	58	{
	59	struct bonding *bond = seq->private;
	60
	61	read_unlock(&bond->lock);
	62	rcu_read_unlock();
	63	}
	64
	65	static void bond_info_show_master(struct seq_file *seq)
	66	{
	67	struct bonding *bond = seq->private;
a4b32ce7	68	struct bond_opt_value *optval;
bd33acc3 AW	69	struct slave *curr;
	70	int i;
	71
	72	read_lock(&bond->curr_slave_lock);
	73	curr = bond->curr_active_slave;
	74	read_unlock(&bond->curr_slave_lock);
	75
	76	seq_printf(seq, "Bonding Mode: %s",
	77	bond_mode_name(bond->params.mode));
	78
	79	if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
1df6b6aa NA	80	bond->params.fail_over_mac) {
	81	optval = bond_opt_get_val(BOND_OPT_FAIL_OVER_MAC,
	82	bond->params.fail_over_mac);
	83	seq_printf(seq, " (fail_over_mac %s)", optval->string);
	84	}
bd33acc3 AW	85
	86	seq_printf(seq, "\n");
	87
	88	if (bond->params.mode == BOND_MODE_XOR \|\|
	89	bond->params.mode == BOND_MODE_8023AD) {
a4b32ce7 NA	90	optval = bond_opt_get_val(BOND_OPT_XMIT_HASH,
a4b32ce7 NA	91	bond->params.xmit_policy);
bd33acc3	92	seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
a4b32ce7	93	optval->string, bond->params.xmit_policy);
bd33acc3 AW	94	}
	95
	96	if (USES_PRIMARY(bond->params.mode)) {
	97	seq_printf(seq, "Primary Slave: %s",
	98	(bond->primary_slave) ?
	99	bond->primary_slave->dev->name : "None");
	100	if (bond->primary_slave)
	101	seq_printf(seq, " (primary_reselect %s)",
	102	pri_reselect_tbl[bond->params.primary_reselect].modename);
	103
	104	seq_printf(seq, "\nCurrently Active Slave: %s\n",
	105	(curr) ? curr->dev->name : "None");
	106	}
	107
	108	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
	109	"up" : "down");
	110	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
	111	seq_printf(seq, "Up Delay (ms): %d\n",
	112	bond->params.updelay * bond->params.miimon);
	113	seq_printf(seq, "Down Delay (ms): %d\n",
	114	bond->params.downdelay * bond->params.miimon);
	115
	116
	117	/* ARP information */
	118	if (bond->params.arp_interval > 0) {
	119	int printed = 0;
	120	seq_printf(seq, "ARP Polling Interval (ms): %d\n",
	121	bond->params.arp_interval);
	122
	123	seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
	124
	125	for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
	126	if (!bond->params.arp_targets[i])
	127	break;
	128	if (printed)
	129	seq_printf(seq, ",");
	130	seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
	131	printed = 1;
	132	}
	133	seq_printf(seq, "\n");
	134	}
	135
	136	if (bond->params.mode == BOND_MODE_8023AD) {
	137	struct ad_info ad_info;
	138
	139	seq_puts(seq, "\n802.3ad info\n");
	140	seq_printf(seq, "LACP rate: %s\n",
	141	(bond->params.lacp_fast) ? "fast" : "slow");
655f8919	142	seq_printf(seq, "Min links: %d\n", bond->params.min_links);
bd33acc3 AW	143	seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
	144	ad_select_tbl[bond->params.ad_select].modename);
	145
318debd8	146	if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
bd33acc3 AW	147	seq_printf(seq, "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	}
	163	}
	164	}
	165
	166	static void bond_info_show_slave(struct seq_file *seq,
	167	const struct slave *slave)
	168	{
	169	struct bonding *bond = seq->private;
	170
	171	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
df2bcc4a	172	seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
589665f5	173	if (slave->speed == SPEED_UNKNOWN)
98f41f69 WP	174	seq_printf(seq, "Speed: %s\n", "Unknown");
	175	else
	176	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	177
589665f5	178	if (slave->duplex == DUPLEX_UNKNOWN)
98f41f69 WP	179	seq_printf(seq, "Duplex: %s\n", "Unknown");
	180	else
	181	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	182
bd33acc3 AW	183	seq_printf(seq, "Link Failure Count: %u\n",
	184	slave->link_failure_count);
	185
	186	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
	187
	188	if (bond->params.mode == BOND_MODE_8023AD) {
	189	const struct aggregator *agg
	190	= SLAVE_AD_INFO(slave).port.aggregator;
	191
	192	if (agg)
	193	seq_printf(seq, "Aggregator ID: %d\n",
	194	agg->aggregator_identifier);
	195	else
	196	seq_puts(seq, "Aggregator ID: N/A\n");
	197	}
	198	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
	199	}
	200
	201	static int bond_info_seq_show(struct seq_file seq, void v)
	202	{
	203	if (v == SEQ_START_TOKEN) {
	204	seq_printf(seq, "%s\n", bond_version);
	205	bond_info_show_master(seq);
	206	} else
	207	bond_info_show_slave(seq, v);
	208
	209	return 0;
	210	}
	211
	212	static const struct seq_operations bond_info_seq_ops = {
	213	.start = bond_info_seq_start,
	214	.next = bond_info_seq_next,
	215	.stop = bond_info_seq_stop,
	216	.show = bond_info_seq_show,
	217	};
	218
	219	static int bond_info_open(struct inode inode, struct file file)
	220	{
	221	struct seq_file *seq;
bd33acc3 AW	222	int res;
	223
	224	res = seq_open(file, &bond_info_seq_ops);
	225	if (!res) {
	226	/* recover the pointer buried in proc_dir_entry data */
	227	seq = file->private_data;
d9dda78b	228	seq->private = PDE_DATA(inode);
bd33acc3 AW	229	}
	230
	231	return res;
	232	}
	233
	234	static const struct file_operations bond_info_fops = {
	235	.owner = THIS_MODULE,
	236	.open = bond_info_open,
	237	.read = seq_read,
	238	.llseek = seq_lseek,
	239	.release = seq_release,
	240	};
	241
	242	void bond_create_proc_entry(struct bonding *bond)
	243	{
	244	struct net_device *bond_dev = bond->dev;
	245	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	246
	247	if (bn->proc_dir) {
	248	bond->proc_entry = proc_create_data(bond_dev->name,
	249	S_IRUGO, bn->proc_dir,
	250	&bond_info_fops, bond);
	251	if (bond->proc_entry == NULL)
	252	pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
	253	DRV_NAME, bond_dev->name);
	254	else
	255	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
	256	}
	257	}
	258
	259	void bond_remove_proc_entry(struct bonding *bond)
	260	{
	261	struct net_device *bond_dev = bond->dev;
	262	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	263
	264	if (bn->proc_dir && bond->proc_entry) {
	265	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
	266	memset(bond->proc_file_name, 0, IFNAMSIZ);
	267	bond->proc_entry = NULL;
	268	}
	269	}
	270
	271	/* Create the bonding directory under /proc/net, if doesn't exist yet.
	272	* Caller must hold rtnl_lock.
	273	*/
	274	void __net_init bond_create_proc_dir(struct bond_net *bn)
	275	{
	276	if (!bn->proc_dir) {
	277	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
	278	if (!bn->proc_dir)
	279	pr_warning("Warning: cannot create /proc/net/%s\n",
	280	DRV_NAME);
	281	}
	282	}
	283
	284	/* Destroy the bonding directory under /proc/net, if empty.
	285	* Caller must hold rtnl_lock.
	286	*/
	287	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
	288	{
	289	if (bn->proc_dir) {
	290	remove_proc_entry(DRV_NAME, bn->net->proc_net);
	291	bn->proc_dir = NULL;
	292	}
293	}