284 lines
7.2 KiB
C
284 lines
7.2 KiB
C
#include <linux/proc_fs.h>
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#include <linux/export.h>
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#include <net/net_namespace.h>
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#include <net/netns/generic.h>
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#include "bonding.h"
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static void *bond_info_seq_start(struct seq_file *seq, loff_t *pos)
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__acquires(RCU)
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__acquires(&bond->lock)
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{
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struct bonding *bond = seq->private;
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loff_t off = 0;
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struct slave *slave;
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int i;
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/* make sure the bond won't be taken away */
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rcu_read_lock();
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read_lock(&bond->lock);
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if (*pos == 0)
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return SEQ_START_TOKEN;
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bond_for_each_slave(bond, slave, i) {
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if (++off == *pos)
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return slave;
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}
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return NULL;
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}
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static void *bond_info_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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struct bonding *bond = seq->private;
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struct slave *slave = v;
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++*pos;
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if (v == SEQ_START_TOKEN)
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return bond->first_slave;
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slave = slave->next;
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return (slave == bond->first_slave) ? NULL : slave;
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}
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static void bond_info_seq_stop(struct seq_file *seq, void *v)
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__releases(&bond->lock)
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__releases(RCU)
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{
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struct bonding *bond = seq->private;
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read_unlock(&bond->lock);
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rcu_read_unlock();
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}
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static void bond_info_show_master(struct seq_file *seq)
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{
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struct bonding *bond = seq->private;
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struct slave *curr;
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int i;
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read_lock(&bond->curr_slave_lock);
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curr = bond->curr_active_slave;
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read_unlock(&bond->curr_slave_lock);
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seq_printf(seq, "Bonding Mode: %s",
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bond_mode_name(bond->params.mode));
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if (bond->params.mode == BOND_MODE_ACTIVEBACKUP &&
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bond->params.fail_over_mac)
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seq_printf(seq, " (fail_over_mac %s)",
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fail_over_mac_tbl[bond->params.fail_over_mac].modename);
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seq_printf(seq, "\n");
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if (bond->params.mode == BOND_MODE_XOR ||
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bond->params.mode == BOND_MODE_8023AD) {
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seq_printf(seq, "Transmit Hash Policy: %s (%d)\n",
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xmit_hashtype_tbl[bond->params.xmit_policy].modename,
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bond->params.xmit_policy);
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}
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if (USES_PRIMARY(bond->params.mode)) {
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seq_printf(seq, "Primary Slave: %s",
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(bond->primary_slave) ?
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bond->primary_slave->dev->name : "None");
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if (bond->primary_slave)
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seq_printf(seq, " (primary_reselect %s)",
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pri_reselect_tbl[bond->params.primary_reselect].modename);
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seq_printf(seq, "\nCurrently Active Slave: %s\n",
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(curr) ? curr->dev->name : "None");
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}
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seq_printf(seq, "MII Status: %s\n", netif_carrier_ok(bond->dev) ?
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"up" : "down");
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seq_printf(seq, "MII Polling Interval (ms): %d\n", bond->params.miimon);
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seq_printf(seq, "Up Delay (ms): %d\n",
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bond->params.updelay * bond->params.miimon);
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seq_printf(seq, "Down Delay (ms): %d\n",
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bond->params.downdelay * bond->params.miimon);
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/* ARP information */
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if (bond->params.arp_interval > 0) {
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int printed = 0;
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seq_printf(seq, "ARP Polling Interval (ms): %d\n",
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bond->params.arp_interval);
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seq_printf(seq, "ARP IP target/s (n.n.n.n form):");
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for (i = 0; (i < BOND_MAX_ARP_TARGETS); i++) {
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if (!bond->params.arp_targets[i])
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break;
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if (printed)
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seq_printf(seq, ",");
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seq_printf(seq, " %pI4", &bond->params.arp_targets[i]);
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printed = 1;
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}
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seq_printf(seq, "\n");
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}
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if (bond->params.mode == BOND_MODE_8023AD) {
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struct ad_info ad_info;
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seq_puts(seq, "\n802.3ad info\n");
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seq_printf(seq, "LACP rate: %s\n",
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(bond->params.lacp_fast) ? "fast" : "slow");
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seq_printf(seq, "Min links: %d\n", bond->params.min_links);
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seq_printf(seq, "Aggregator selection policy (ad_select): %s\n",
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ad_select_tbl[bond->params.ad_select].modename);
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if (bond_3ad_get_active_agg_info(bond, &ad_info)) {
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seq_printf(seq, "bond %s has no active aggregator\n",
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bond->dev->name);
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} else {
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seq_printf(seq, "Active Aggregator Info:\n");
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seq_printf(seq, "\tAggregator ID: %d\n",
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ad_info.aggregator_id);
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seq_printf(seq, "\tNumber of ports: %d\n",
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ad_info.ports);
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seq_printf(seq, "\tActor Key: %d\n",
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ad_info.actor_key);
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seq_printf(seq, "\tPartner Key: %d\n",
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ad_info.partner_key);
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seq_printf(seq, "\tPartner Mac Address: %pM\n",
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ad_info.partner_system);
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}
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}
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}
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static void bond_info_show_slave(struct seq_file *seq,
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const struct slave *slave)
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{
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struct bonding *bond = seq->private;
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seq_printf(seq, "\nSlave Interface: %s\n", slave->dev->name);
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seq_printf(seq, "MII Status: %s\n",
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(slave->link == BOND_LINK_UP) ? "up" : "down");
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if (slave->speed == SPEED_UNKNOWN)
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seq_printf(seq, "Speed: %s\n", "Unknown");
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else
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seq_printf(seq, "Speed: %d Mbps\n", slave->speed);
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if (slave->duplex == DUPLEX_UNKNOWN)
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seq_printf(seq, "Duplex: %s\n", "Unknown");
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else
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seq_printf(seq, "Duplex: %s\n", slave->duplex ? "full" : "half");
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seq_printf(seq, "Link Failure Count: %u\n",
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slave->link_failure_count);
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seq_printf(seq, "Permanent HW addr: %pM\n", slave->perm_hwaddr);
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if (bond->params.mode == BOND_MODE_8023AD) {
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const struct aggregator *agg
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= SLAVE_AD_INFO(slave).port.aggregator;
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if (agg)
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seq_printf(seq, "Aggregator ID: %d\n",
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agg->aggregator_identifier);
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else
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seq_puts(seq, "Aggregator ID: N/A\n");
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}
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seq_printf(seq, "Slave queue ID: %d\n", slave->queue_id);
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}
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static int bond_info_seq_show(struct seq_file *seq, void *v)
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{
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if (v == SEQ_START_TOKEN) {
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seq_printf(seq, "%s\n", bond_version);
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bond_info_show_master(seq);
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} else
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bond_info_show_slave(seq, v);
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return 0;
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}
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static const struct seq_operations bond_info_seq_ops = {
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.start = bond_info_seq_start,
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.next = bond_info_seq_next,
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.stop = bond_info_seq_stop,
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.show = bond_info_seq_show,
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};
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static int bond_info_open(struct inode *inode, struct file *file)
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{
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struct seq_file *seq;
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struct proc_dir_entry *proc;
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int res;
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res = seq_open(file, &bond_info_seq_ops);
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if (!res) {
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/* recover the pointer buried in proc_dir_entry data */
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seq = file->private_data;
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proc = PDE(inode);
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seq->private = proc->data;
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}
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return res;
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}
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static const struct file_operations bond_info_fops = {
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.owner = THIS_MODULE,
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.open = bond_info_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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void bond_create_proc_entry(struct bonding *bond)
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{
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struct net_device *bond_dev = bond->dev;
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struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
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if (bn->proc_dir) {
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bond->proc_entry = proc_create_data(bond_dev->name,
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S_IRUGO, bn->proc_dir,
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&bond_info_fops, bond);
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if (bond->proc_entry == NULL)
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pr_warning("Warning: Cannot create /proc/net/%s/%s\n",
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DRV_NAME, bond_dev->name);
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else
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memcpy(bond->proc_file_name, bond_dev->name, IFNAMSIZ);
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}
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}
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void bond_remove_proc_entry(struct bonding *bond)
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{
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struct net_device *bond_dev = bond->dev;
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struct bond_net *bn = net_generic(dev_net(bond_dev), bond_net_id);
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if (bn->proc_dir && bond->proc_entry) {
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remove_proc_entry(bond->proc_file_name, bn->proc_dir);
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memset(bond->proc_file_name, 0, IFNAMSIZ);
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bond->proc_entry = NULL;
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}
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}
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/* Create the bonding directory under /proc/net, if doesn't exist yet.
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* Caller must hold rtnl_lock.
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*/
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void __net_init bond_create_proc_dir(struct bond_net *bn)
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{
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if (!bn->proc_dir) {
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bn->proc_dir = proc_mkdir(DRV_NAME, bn->net->proc_net);
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if (!bn->proc_dir)
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pr_warning("Warning: cannot create /proc/net/%s\n",
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DRV_NAME);
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}
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}
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/* Destroy the bonding directory under /proc/net, if empty.
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* Caller must hold rtnl_lock.
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*/
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void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
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{
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if (bn->proc_dir) {
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remove_proc_entry(DRV_NAME, bn->net->proc_net);
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bn->proc_dir = NULL;
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}
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}
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