| #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; |
| } |
| } |