[mirror_ubuntu-bionic-kernel.git] / drivers / net / bonding / bond_procfs.c

#include <linux/proc_fs.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 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",
		   (slave->link == BOND_LINK_UP) ?  "up" : "down");
	if (slave->speed == -1)
		seq_printf(seq, "Speed: %s\n", "Unknown");
	else
		seq_printf(seq, "Speed: %d Mbps\n", slave->speed);

	if (slave->duplex == -1)
		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;
	struct proc_dir_entry *proc;
	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;
		proc = PDE(inode);
		seq->private = proc->data;
	}

	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 AW	1	#include <linux/proc_fs.h>
	2	#include <net/net_namespace.h>
	3	#include <net/netns/generic.h>
	4	#include "bonding.h"
	5
	6
bd33acc3 AW	7	static void bond_info_seq_start(struct seq_file seq, loff_t *pos)
	8	__acquires(RCU)
	9	__acquires(&bond->lock)
	10	{
	11	struct bonding *bond = seq->private;
	12	loff_t off = 0;
	13	struct slave *slave;
	14	int i;
	15
	16	/* make sure the bond won't be taken away */
	17	rcu_read_lock();
	18	read_lock(&bond->lock);
	19
	20	if (*pos == 0)
	21	return SEQ_START_TOKEN;
	22
	23	bond_for_each_slave(bond, slave, i) {
	24	if (++off == *pos)
	25	return slave;
	26	}
	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;
	34	struct slave *slave = v;
	35
	36	++*pos;
	37	if (v == SEQ_START_TOKEN)
	38	return bond->first_slave;
	39
	40	slave = slave->next;
	41
	42	return (slave == bond->first_slave) ? NULL : slave;
	43	}
	44
	45	static void bond_info_seq_stop(struct seq_file seq, void v)
	46	__releases(&bond->lock)
	47	__releases(RCU)
	48	{
	49	struct bonding *bond = seq->private;
	50
	51	read_unlock(&bond->lock);
	52	rcu_read_unlock();
	53	}
	54
	55	static void bond_info_show_master(struct seq_file *seq)
	56	{
	57	struct bonding *bond = seq->private;
	58	struct slave *curr;
	59	int i;
	60
	61	read_lock(&bond->curr_slave_lock);
	62	curr = bond->curr_active_slave;
	63	read_unlock(&bond->curr_slave_lock);
	64
	65	seq_printf(seq, "Bonding Mode: %s",
	66	bond_mode_name(bond->params.mode));
	67
	68	if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
	69	bond->params.fail_over_mac)
	70	seq_printf(seq, " (fail_over_mac %s)",
71	fail_over_mac_tbl[bond->params.fail_over_mac].modename);
72
73	seq_printf(seq, "\n");
74
75	if (bond->params.mode == BOND_MODE_XOR \|\|
76	bond->params.mode == BOND_MODE_8023AD) {
77	seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
78	xmit_hashtype_tbl[bond->params.xmit_policy].modename,
79	bond->params.xmit_policy);
80	}
81
82	if (USES_PRIMARY(bond->params.mode)) {
83	seq_printf(seq, "Primary Slave: %s",
84	(bond->primary_slave) ?
85	bond->primary_slave->dev->name : "None");
86	if (bond->primary_slave)
87	seq_printf(seq, " (primary_reselect %s)",
88	pri_reselect_tbl[bond->params.primary_reselect].modename);
89
90	seq_printf(seq, "\nCurrently Active Slave: %s\n",
91	(curr) ? curr->dev->name : "None");
92	}
93
94	seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
95	"up" : "down");
96	seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
97	seq_printf(seq, "Up Delay (ms): %d\n",
98	bond->params.updelay * bond->params.miimon);
99	seq_printf(seq, "Down Delay (ms): %d\n",
100	bond->params.downdelay * bond->params.miimon);
101
102
103	/* ARP information */
104	if (bond->params.arp_interval > 0) {
105	int printed = 0;
106	seq_printf(seq, "ARP Polling Interval (ms): %d\n",
107	bond->params.arp_interval);
108
109	seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
110
111	for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
112	if (!bond->params.arp_targets[i])
113	break;
114	if (printed)
115	seq_printf(seq, ",");
116	seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
117	printed = 1;
118	}
119	seq_printf(seq, "\n");
120	}
121
122	if (bond->params.mode == BOND_MODE_8023AD) {
123	struct ad_info ad_info;
124
125	seq_puts(seq, "\n802.3ad info\n");
126	seq_printf(seq, "LACP rate: %s\n",
127	(bond->params.lacp_fast) ? "fast" : "slow");
655f8919	128	seq_printf(seq, "Min links: %d\n", bond->params.min_links);
bd33acc3 AW	129	seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
	130	ad_select_tbl[bond->params.ad_select].modename);
	131
	132	if (bond_3ad_get_active_agg_info(bond, &ad_info)) {
	133	seq_printf(seq, "bond %s has no active aggregator\n",
	134	bond->dev->name);
	135	} else {
	136	seq_printf(seq, "Active Aggregator Info:\n");
	137
	138	seq_printf(seq, "\tAggregator ID: %d\n",
	139	ad_info.aggregator_id);
	140	seq_printf(seq, "\tNumber of ports: %d\n",
	141	ad_info.ports);
	142	seq_printf(seq, "\tActor Key: %d\n",
	143	ad_info.actor_key);
	144	seq_printf(seq, "\tPartner Key: %d\n",
	145	ad_info.partner_key);
	146	seq_printf(seq, "\tPartner Mac Address: %pM\n",
	147	ad_info.partner_system);
	148	}
	149	}
	150	}
	151
	152	static void bond_info_show_slave(struct seq_file *seq,
	153	const struct slave *slave)
	154	{
	155	struct bonding *bond = seq->private;
	156
	157	seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
	158	seq_printf(seq, "MII Status: %s\n",
	159	(slave->link == BOND_LINK_UP) ? "up" : "down");
98f41f69 WP	160	if (slave->speed == -1)
	161	seq_printf(seq, "Speed: %s\n", "Unknown");
	162	else
	163	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	164
	165	if (slave->duplex == -1)
	166	seq_printf(seq, "Duplex: %s\n", "Unknown");
	167	else
	168	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	169
bd33acc3 AW	170	seq_printf(seq, "Link Failure Count: %u\n",
	171	slave->link_failure_count);
	172
	173	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
	174
	175	if (bond->params.mode == BOND_MODE_8023AD) {
	176	const struct aggregator *agg
	177	= SLAVE_AD_INFO(slave).port.aggregator;
	178
	179	if (agg)
	180	seq_printf(seq, "Aggregator ID: %d\n",
	181	agg->aggregator_identifier);
	182	else
	183	seq_puts(seq, "Aggregator ID: N/A\n");
	184	}
	185	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
	186	}
	187
	188	static int bond_info_seq_show(struct seq_file seq, void v)
	189	{
	190	if (v == SEQ_START_TOKEN) {
	191	seq_printf(seq, "%s\n", bond_version);
	192	bond_info_show_master(seq);
	193	} else
	194	bond_info_show_slave(seq, v);
	195
	196	return 0;
	197	}
	198
	199	static const struct seq_operations bond_info_seq_ops = {
	200	.start = bond_info_seq_start,
	201	.next = bond_info_seq_next,
	202	.stop = bond_info_seq_stop,
	203	.show = bond_info_seq_show,
	204	};
	205
	206	static int bond_info_open(struct inode inode, struct file file)
	207	{
	208	struct seq_file *seq;
	209	struct proc_dir_entry *proc;
	210	int res;
	211
	212	res = seq_open(file, &bond_info_seq_ops);
	213	if (!res) {
	214	/* recover the pointer buried in proc_dir_entry data */
	215	seq = file->private_data;
	216	proc = PDE(inode);
	217	seq->private = proc->data;
	218	}
	219
	220	return res;
	221	}
	222
	223	static const struct file_operations bond_info_fops = {
	224	.owner = THIS_MODULE,
	225	.open = bond_info_open,
	226	.read = seq_read,
	227	.llseek = seq_lseek,
	228	.release = seq_release,
	229	};
	230
	231	void bond_create_proc_entry(struct bonding *bond)
	232	{
	233	struct net_device *bond_dev = bond->dev;
234	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
235
236	if (bn->proc_dir) {
237	bond->proc_entry = proc_create_data(bond_dev->name,
238	S_IRUGO, bn->proc_dir,
239	&bond_info_fops, bond);
240	if (bond->proc_entry == NULL)
241	pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
242	DRV_NAME, bond_dev->name);
243	else
244	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
245	}
246	}
247
248	void bond_remove_proc_entry(struct bonding *bond)
249	{
250	struct net_device *bond_dev = bond->dev;
251	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
252
253	if (bn->proc_dir && bond->proc_entry) {
254	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
255	memset(bond->proc_file_name, 0, IFNAMSIZ);
256	bond->proc_entry = NULL;
257	}
258	}
259
260	/* Create the bonding directory under /proc/net, if doesn't exist yet.
261	* Caller must hold rtnl_lock.
262	*/
263	void __net_init bond_create_proc_dir(struct bond_net *bn)
264	{
265	if (!bn->proc_dir) {
266	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
267	if (!bn->proc_dir)
268	pr_warning("Warning: cannot create /proc/net/%s\n",
269	DRV_NAME);
270	}
271	}
272
273	/* Destroy the bonding directory under /proc/net, if empty.
274	* Caller must hold rtnl_lock.
275	*/
276	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
277	{
278	if (bn->proc_dir) {
279	remove_proc_entry(DRV_NAME, bn->net->proc_net);
280	bn->proc_dir = NULL;
281	}
282	}