[mirror_ubuntu-bionic-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;
	loff_t off = 0;
	struct slave *slave;
	int i;

	/* 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, i) {
		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 slave *slave = v;

	++*pos;
	if (v == SEQ_START_TOKEN)
		return bond->first_slave;

	slave = slave->next;

	return (slave == bond->first_slave) ? NULL : slave;
}

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 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)
		seq_printf(seq, " (fail_over_mac %s)",
		   fail_over_mac_tbl[bond->params.fail_over_mac].modename);

	seq_printf(seq, "\n");

	if (bond->params.mode == BOND_MODE_XOR ||
		bond->params.mode == BOND_MODE_8023AD) {
		seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
			xmit_hashtype_tbl[bond->params.xmit_policy].modename,
			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 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)
{
	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;
	13	loff_t off = 0;
	14	struct slave *slave;
	15	int i;
	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
	24	bond_for_each_slave(bond, slave, i) {
	25	if (++off == *pos)
	26	return slave;
	27	}
	28
	29	return NULL;
	30	}
	31
	32	static void bond_info_seq_next(struct seq_file seq, void v, loff_t pos)
	33	{
	34	struct bonding *bond = seq->private;
	35	struct slave *slave = v;
	36
	37	++*pos;
	38	if (v == SEQ_START_TOKEN)
	39	return bond->first_slave;
	40
	41	slave = slave->next;
	42
	43	return (slave == bond->first_slave) ? NULL : slave;
	44	}
	45
	46	static void bond_info_seq_stop(struct seq_file seq, void v)
	47	__releases(&bond->lock)
	48	__releases(RCU)
	49	{
	50	struct bonding *bond = seq->private;
	51
	52	read_unlock(&bond->lock);
	53	rcu_read_unlock();
	54	}
	55
	56	static void bond_info_show_master(struct seq_file *seq)
	57	{
	58	struct bonding *bond = seq->private;
	59	struct slave *curr;
	60	int i;
	61
	62	read_lock(&bond->curr_slave_lock);
	63	curr = bond->curr_active_slave;
	64	read_unlock(&bond->curr_slave_lock);
	65
	66	seq_printf(seq, "Bonding Mode: %s",
	67	bond_mode_name(bond->params.mode));
	68
	69	if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
	70	bond->params.fail_over_mac)
	71	seq_printf(seq, " (fail_over_mac %s)",
72	fail_over_mac_tbl[bond->params.fail_over_mac].modename);
73
74	seq_printf(seq, "\n");
75
76	if (bond->params.mode == BOND_MODE_XOR \|\|
77	bond->params.mode == BOND_MODE_8023AD) {
78	seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
79	xmit_hashtype_tbl[bond->params.xmit_policy].modename,
80	bond->params.xmit_policy);
81	}
82
83	if (USES_PRIMARY(bond->params.mode)) {
84	seq_printf(seq, "Primary Slave: %s",
85	(bond->primary_slave) ?
86	bond->primary_slave->dev->name : "None");
87	if (bond->primary_slave)
88	seq_printf(seq, " (primary_reselect %s)",
89	pri_reselect_tbl[bond->params.primary_reselect].modename);
90
91	seq_printf(seq, "\nCurrently Active Slave: %s\n",
92	(curr) ? curr->dev->name : "None");
93	}
94
95	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
96	"up" : "down");
97	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
98	seq_printf(seq, "Up Delay (ms): %d\n",
99	bond->params.updelay * bond->params.miimon);
100	seq_printf(seq, "Down Delay (ms): %d\n",
101	bond->params.downdelay * bond->params.miimon);
102
103
104	/* ARP information */
105	if (bond->params.arp_interval > 0) {
106	int printed = 0;
107	seq_printf(seq, "ARP Polling Interval (ms): %d\n",
108	bond->params.arp_interval);
109
110	seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
111
112	for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
113	if (!bond->params.arp_targets[i])
114	break;
115	if (printed)
116	seq_printf(seq, ",");
117	seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
118	printed = 1;
119	}
120	seq_printf(seq, "\n");
121	}
122
123	if (bond->params.mode == BOND_MODE_8023AD) {
124	struct ad_info ad_info;
125
126	seq_puts(seq, "\n802.3ad info\n");
127	seq_printf(seq, "LACP rate: %s\n",
128	(bond->params.lacp_fast) ? "fast" : "slow");
655f8919	129	seq_printf(seq, "Min links: %d\n", bond->params.min_links);
bd33acc3 AW	130	seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
	131	ad_select_tbl[bond->params.ad_select].modename);
	132
	133	if (bond_3ad_get_active_agg_info(bond, &ad_info)) {
	134	seq_printf(seq, "bond %s has no active aggregator\n",
	135	bond->dev->name);
	136	} else {
	137	seq_printf(seq, "Active Aggregator Info:\n");
	138
	139	seq_printf(seq, "\tAggregator ID: %d\n",
	140	ad_info.aggregator_id);
	141	seq_printf(seq, "\tNumber of ports: %d\n",
	142	ad_info.ports);
	143	seq_printf(seq, "\tActor Key: %d\n",
	144	ad_info.actor_key);
	145	seq_printf(seq, "\tPartner Key: %d\n",
	146	ad_info.partner_key);
	147	seq_printf(seq, "\tPartner Mac Address: %pM\n",
	148	ad_info.partner_system);
	149	}
	150	}
	151	}
	152
df2bcc4a AW	153	static const char *bond_slave_link_status(s8 link)
	154	{
	155	static const char * const status[] = {
	156	[BOND_LINK_UP] = "up",
	157	[BOND_LINK_FAIL] = "going down",
	158	[BOND_LINK_DOWN] = "down",
	159	[BOND_LINK_BACK] = "going back",
	160	};
	161
	162	return status[link];
	163	}
	164
bd33acc3 AW	165	static void bond_info_show_slave(struct seq_file *seq,
	166	const struct slave *slave)
	167	{
	168	struct bonding *bond = seq->private;
	169
	170	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
df2bcc4a	171	seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
589665f5	172	if (slave->speed == SPEED_UNKNOWN)
98f41f69 WP	173	seq_printf(seq, "Speed: %s\n", "Unknown");
	174	else
	175	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	176
589665f5	177	if (slave->duplex == DUPLEX_UNKNOWN)
98f41f69 WP	178	seq_printf(seq, "Duplex: %s\n", "Unknown");
	179	else
	180	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	181
bd33acc3 AW	182	seq_printf(seq, "Link Failure Count: %u\n",
	183	slave->link_failure_count);
	184
	185	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
	186
	187	if (bond->params.mode == BOND_MODE_8023AD) {
	188	const struct aggregator *agg
	189	= SLAVE_AD_INFO(slave).port.aggregator;
	190
	191	if (agg)
	192	seq_printf(seq, "Aggregator ID: %d\n",
	193	agg->aggregator_identifier);
	194	else
	195	seq_puts(seq, "Aggregator ID: N/A\n");
	196	}
	197	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
	198	}
	199
	200	static int bond_info_seq_show(struct seq_file seq, void v)
	201	{
	202	if (v == SEQ_START_TOKEN) {
	203	seq_printf(seq, "%s\n", bond_version);
	204	bond_info_show_master(seq);
	205	} else
	206	bond_info_show_slave(seq, v);
	207
	208	return 0;
	209	}
	210
	211	static const struct seq_operations bond_info_seq_ops = {
	212	.start = bond_info_seq_start,
	213	.next = bond_info_seq_next,
	214	.stop = bond_info_seq_stop,
	215	.show = bond_info_seq_show,
	216	};
	217
	218	static int bond_info_open(struct inode inode, struct file file)
	219	{
	220	struct seq_file *seq;
bd33acc3 AW	221	int res;
	222
	223	res = seq_open(file, &bond_info_seq_ops);
	224	if (!res) {
	225	/* recover the pointer buried in proc_dir_entry data */
	226	seq = file->private_data;
d9dda78b	227	seq->private = PDE_DATA(inode);
bd33acc3 AW	228	}
	229
	230	return res;
	231	}
	232
	233	static const struct file_operations bond_info_fops = {
	234	.owner = THIS_MODULE,
	235	.open = bond_info_open,
	236	.read = seq_read,
	237	.llseek = seq_lseek,
	238	.release = seq_release,
	239	};
	240
	241	void bond_create_proc_entry(struct bonding *bond)
	242	{
	243	struct net_device *bond_dev = bond->dev;
	244	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	245
	246	if (bn->proc_dir) {
	247	bond->proc_entry = proc_create_data(bond_dev->name,
	248	S_IRUGO, bn->proc_dir,
	249	&bond_info_fops, bond);
	250	if (bond->proc_entry == NULL)
	251	pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
	252	DRV_NAME, bond_dev->name);
	253	else
	254	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
	255	}
	256	}
	257
	258	void bond_remove_proc_entry(struct bonding *bond)
	259	{
	260	struct net_device *bond_dev = bond->dev;
	261	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	262
	263	if (bn->proc_dir && bond->proc_entry) {
	264	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
	265	memset(bond->proc_file_name, 0, IFNAMSIZ);
	266	bond->proc_entry = NULL;
	267	}
	268	}
	269
	270	/* Create the bonding directory under /proc/net, if doesn't exist yet.
	271	* Caller must hold rtnl_lock.
	272	*/
	273	void __net_init bond_create_proc_dir(struct bond_net *bn)
	274	{
	275	if (!bn->proc_dir) {
	276	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
	277	if (!bn->proc_dir)
	278	pr_warning("Warning: cannot create /proc/net/%s\n",
	279	DRV_NAME);
	280	}
	281	}
	282
	283	/* Destroy the bonding directory under /proc/net, if empty.
	284	* Caller must hold rtnl_lock.
	285	*/
	286	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
	287	{
	288	if (bn->proc_dir) {
	289	remove_proc_entry(DRV_NAME, bn->net->proc_net);
	290	bn->proc_dir = NULL;
	291	}
292	}