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#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;
}
}
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