[mirror_ubuntu-focal-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");
	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	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");
	160	seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
	161	seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
	162	seq_printf(seq, "Link Failure Count: %u\n",
	163	slave->link_failure_count);
	164
	165	seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
	166
	167	if (bond->params.mode == BOND_MODE_8023AD) {
	168	const struct aggregator *agg
	169	= SLAVE_AD_INFO(slave).port.aggregator;
	170
	171	if (agg)
	172	seq_printf(seq, "Aggregator ID: %d\n",
	173	agg->aggregator_identifier);
	174	else
	175	seq_puts(seq, "Aggregator ID: N/A\n");
	176	}
	177	seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
	178	}
	179
	180	static int bond_info_seq_show(struct seq_file seq, void v)
	181	{
	182	if (v == SEQ_START_TOKEN) {
	183	seq_printf(seq, "%s\n", bond_version);
	184	bond_info_show_master(seq);
	185	} else
	186	bond_info_show_slave(seq, v);
	187
	188	return 0;
	189	}
	190
	191	static const struct seq_operations bond_info_seq_ops = {
	192	.start = bond_info_seq_start,
193	.next = bond_info_seq_next,
194	.stop = bond_info_seq_stop,
195	.show = bond_info_seq_show,
196	};
197
198	static int bond_info_open(struct inode inode, struct file file)
199	{
200	struct seq_file *seq;
201	struct proc_dir_entry *proc;
202	int res;
203
204	res = seq_open(file, &bond_info_seq_ops);
205	if (!res) {
206	/* recover the pointer buried in proc_dir_entry data */
207	seq = file->private_data;
208	proc = PDE(inode);
209	seq->private = proc->data;
210	}
211
212	return res;
213	}
214
215	static const struct file_operations bond_info_fops = {
216	.owner = THIS_MODULE,
217	.open = bond_info_open,
218	.read = seq_read,
219	.llseek = seq_lseek,
220	.release = seq_release,
221	};
222
223	void bond_create_proc_entry(struct bonding *bond)
224	{
225	struct net_device *bond_dev = bond->dev;
226	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
227
228	if (bn->proc_dir) {
229	bond->proc_entry = proc_create_data(bond_dev->name,
230	S_IRUGO, bn->proc_dir,
231	&bond_info_fops, bond);
232	if (bond->proc_entry == NULL)
233	pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
234	DRV_NAME, bond_dev->name);
235	else
236	memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
237	}
238	}
239
240	void bond_remove_proc_entry(struct bonding *bond)
241	{
242	struct net_device *bond_dev = bond->dev;
243	struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
244
245	if (bn->proc_dir && bond->proc_entry) {
246	remove_proc_entry(bond->proc_file_name, bn->proc_dir);
247	memset(bond->proc_file_name, 0, IFNAMSIZ);
248	bond->proc_entry = NULL;
249	}
250	}
251
252	/* Create the bonding directory under /proc/net, if doesn't exist yet.
253	* Caller must hold rtnl_lock.
254	*/
255	void __net_init bond_create_proc_dir(struct bond_net *bn)
256	{
257	if (!bn->proc_dir) {
258	bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
259	if (!bn->proc_dir)
260	pr_warning("Warning: cannot create /proc/net/%s\n",
261	DRV_NAME);
262	}
263	}
264
265	/* Destroy the bonding directory under /proc/net, if empty.
266	* Caller must hold rtnl_lock.
267	*/
268	void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
269	{
270	if (bn->proc_dir) {
271	remove_proc_entry(DRV_NAME, bn->net->proc_net);
272	bn->proc_dir = NULL;
273	}
274	}