[mirror_ubuntu-artful-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 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 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;
	68	struct slave *curr;
	69	int i;
	70
	71	read_lock(&bond->curr_slave_lock);
	72	curr = bond->curr_active_slave;
	73	read_unlock(&bond->curr_slave_lock);
	74
	75	seq_printf(seq, "Bonding Mode: %s",
	76	bond_mode_name(bond->params.mode));
	77
	78	if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
	79	bond->params.fail_over_mac)
	80	seq_printf(seq, " (fail_over_mac %s)",
	81	fail_over_mac_tbl[bond->params.fail_over_mac].modename);
	82
	83	seq_printf(seq, "\n");
	84
	85	if (bond->params.mode == BOND_MODE_XOR \|\|
	86	bond->params.mode == BOND_MODE_8023AD) {
	87	seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
	88	xmit_hashtype_tbl[bond->params.xmit_policy].modename,
	89	bond->params.xmit_policy);
	90	}
	91
	92	if (USES_PRIMARY(bond->params.mode)) {
	93	seq_printf(seq, "Primary Slave: %s",
	94	(bond->primary_slave) ?
	95	bond->primary_slave->dev->name : "None");
	96	if (bond->primary_slave)
	97	seq_printf(seq, " (primary_reselect %s)",
	98	pri_reselect_tbl[bond->params.primary_reselect].modename);
	99
	100	seq_printf(seq, "\nCurrently Active Slave: %s\n",
	101	(curr) ? curr->dev->name : "None");
	102	}
	103
	104	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
	105	"up" : "down");
	106	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
	107	seq_printf(seq, "Up Delay (ms): %d\n",
	108	bond->params.updelay * bond->params.miimon);
	109	seq_printf(seq, "Down Delay (ms): %d\n",
	110	bond->params.downdelay * bond->params.miimon);
	111
	112
	113	/* ARP information */
	114	if (bond->params.arp_interval > 0) {
	115	int printed = 0;
	116	seq_printf(seq, "ARP Polling Interval (ms): %d\n",
117	bond->params.arp_interval);
118
119	seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
120
121	for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
122	if (!bond->params.arp_targets[i])
123	break;
124	if (printed)
125	seq_printf(seq, ",");
126	seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
127	printed = 1;
128	}
129	seq_printf(seq, "\n");
130	}
131
132	if (bond->params.mode == BOND_MODE_8023AD) {
133	struct ad_info ad_info;
134
135	seq_puts(seq, "\n802.3ad info\n");
136	seq_printf(seq, "LACP rate: %s\n",
137	(bond->params.lacp_fast) ? "fast" : "slow");
655f8919	138	seq_printf(seq, "Min links: %d\n", bond->params.min_links);
bd33acc3 AW	139	seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
	140	ad_select_tbl[bond->params.ad_select].modename);
	141
318debd8	142	if (__bond_3ad_get_active_agg_info(bond, &ad_info)) {
bd33acc3 AW	143	seq_printf(seq, "bond %s has no active aggregator\n",
	144	bond->dev->name);
	145	} else {
	146	seq_printf(seq, "Active Aggregator Info:\n");
	147
	148	seq_printf(seq, "\tAggregator ID: %d\n",
	149	ad_info.aggregator_id);
	150	seq_printf(seq, "\tNumber of ports: %d\n",
	151	ad_info.ports);
	152	seq_printf(seq, "\tActor Key: %d\n",
	153	ad_info.actor_key);
	154	seq_printf(seq, "\tPartner Key: %d\n",
	155	ad_info.partner_key);
	156	seq_printf(seq, "\tPartner Mac Address: %pM\n",
	157	ad_info.partner_system);
	158	}
	159	}
	160	}
	161
	162	static void bond_info_show_slave(struct seq_file *seq,
	163	const struct slave *slave)
	164	{
	165	struct bonding *bond = seq->private;
	166
	167	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
df2bcc4a	168	seq_printf(seq, "MII Status: %s\n", bond_slave_link_status(slave->link));
589665f5	169	if (slave->speed == SPEED_UNKNOWN)
98f41f69 WP	170	seq_printf(seq, "Speed: %s\n", "Unknown");
	171	else
	172	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	173
589665f5	174	if (slave->duplex == DUPLEX_UNKNOWN)
98f41f69 WP	175	seq_printf(seq, "Duplex: %s\n", "Unknown");
	176	else
	177	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	178
bd33acc3 AW	179	seq_printf(seq, "Link Failure Count: %u\n",
	180	slave->link_failure_count);
	181
	182	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
	183
	184	if (bond->params.mode == BOND_MODE_8023AD) {
	185	const struct aggregator *agg
	186	= SLAVE_AD_INFO(slave).port.aggregator;
	187
	188	if (agg)
	189	seq_printf(seq, "Aggregator ID: %d\n",
	190	agg->aggregator_identifier);
	191	else
	192	seq_puts(seq, "Aggregator ID: N/A\n");
	193	}
	194	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
	195	}
	196
	197	static int bond_info_seq_show(struct seq_file seq, void v)
	198	{
	199	if (v == SEQ_START_TOKEN) {
	200	seq_printf(seq, "%s\n", bond_version);
	201	bond_info_show_master(seq);
	202	} else
	203	bond_info_show_slave(seq, v);
	204
	205	return 0;
	206	}
	207
	208	static const struct seq_operations bond_info_seq_ops = {
	209	.start = bond_info_seq_start,
	210	.next = bond_info_seq_next,
	211	.stop = bond_info_seq_stop,
	212	.show = bond_info_seq_show,
	213	};
	214
	215	static int bond_info_open(struct inode inode, struct file file)
	216	{
	217	struct seq_file *seq;
bd33acc3 AW	218	int res;
	219
	220	res = seq_open(file, &bond_info_seq_ops);
	221	if (!res) {
	222	/* recover the pointer buried in proc_dir_entry data */
	223	seq = file->private_data;
d9dda78b	224	seq->private = PDE_DATA(inode);
bd33acc3 AW	225	}
	226
	227	return res;
	228	}
	229
	230	static const struct file_operations bond_info_fops = {
	231	.owner = THIS_MODULE,
	232	.open = bond_info_open,
	233	.read = seq_read,
	234	.llseek = seq_lseek,
	235	.release = seq_release,
	236	};
	237
	238	void bond_create_proc_entry(struct bonding *bond)
	239	{
	240	struct net_device *bond_dev = bond->dev;
	241	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	242
	243	if (bn->proc_dir) {
	244	bond->proc_entry = proc_create_data(bond_dev->name,
	245	S_IRUGO, bn->proc_dir,
	246	&bond_info_fops, bond);
	247	if (bond->proc_entry == NULL)
	248	pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
	249	DRV_NAME, bond_dev->name);
	250	else
	251	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
	252	}
	253	}
	254
	255	void bond_remove_proc_entry(struct bonding *bond)
	256	{
	257	struct net_device *bond_dev = bond->dev;
	258	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
	259
	260	if (bn->proc_dir && bond->proc_entry) {
	261	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
	262	memset(bond->proc_file_name, 0, IFNAMSIZ);
	263	bond->proc_entry = NULL;
	264	}
	265	}
	266
	267	/* Create the bonding directory under /proc/net, if doesn't exist yet.
	268	* Caller must hold rtnl_lock.
	269	*/
	270	void __net_init bond_create_proc_dir(struct bond_net *bn)
	271	{
	272	if (!bn->proc_dir) {
	273	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
	274	if (!bn->proc_dir)
	275	pr_warning("Warning: cannot create /proc/net/%s\n",
	276	DRV_NAME);
	277	}
	278	}
	279
	280	/* Destroy the bonding directory under /proc/net, if empty.
	281	* Caller must hold rtnl_lock.
	282	*/
	283	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
	284	{
	285	if (bn->proc_dir) {
	286	remove_proc_entry(DRV_NAME, bn->net->proc_net);
	287	bn->proc_dir = NULL;
	288	}
289	}