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authorSimon Wunderlich <simon.wunderlich@s2003.tu-chemnitz.de>2012-06-18 18:39:26 +0200
committerAntonio Quartulli <ordex@autistici.org>2012-08-23 14:02:41 +0200
commit536a23f119e35e58c762a219bafd398ba2ed7980 (patch)
treef3d5e962a364029ff97bffa5dcb8afe9e29b1191 /net/batman-adv/bridge_loop_avoidance.c
parentc70437289c989d865633486fc24c61441ba32b9e (diff)
batman-adv: Add the backbone gateway list to debugfs
This is especially useful if there are no claims yet, but we still want to know which gateways are using bridge loop avoidance in the network. Signed-off-by: Simon Wunderlich <siwu@hrz.tu-chemnitz.de> Signed-off-by: Antonio Quartulli <ordex@autistici.org>
Diffstat (limited to 'net/batman-adv/bridge_loop_avoidance.c')
-rw-r--r--net/batman-adv/bridge_loop_avoidance.c65
1 files changed, 65 insertions, 0 deletions
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 6705d35b17ce..7e60466f5718 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -1616,3 +1616,68 @@ out:
batadv_hardif_free_ref(primary_if);
return ret;
}
+
+int batadv_bla_backbone_table_seq_print_text(struct seq_file *seq, void *offset)
+{
+ struct net_device *net_dev = (struct net_device *)seq->private;
+ struct batadv_priv *bat_priv = netdev_priv(net_dev);
+ struct batadv_hashtable *hash = bat_priv->backbone_hash;
+ struct batadv_backbone_gw *backbone_gw;
+ struct batadv_hard_iface *primary_if;
+ struct hlist_node *node;
+ struct hlist_head *head;
+ int secs, msecs;
+ uint32_t i;
+ bool is_own;
+ int ret = 0;
+ uint8_t *primary_addr;
+
+ primary_if = batadv_primary_if_get_selected(bat_priv);
+ if (!primary_if) {
+ ret = seq_printf(seq,
+ "BATMAN mesh %s disabled - please specify interfaces to enable it\n",
+ net_dev->name);
+ goto out;
+ }
+
+ if (primary_if->if_status != BATADV_IF_ACTIVE) {
+ ret = seq_printf(seq,
+ "BATMAN mesh %s disabled - primary interface not active\n",
+ net_dev->name);
+ goto out;
+ }
+
+ primary_addr = primary_if->net_dev->dev_addr;
+ seq_printf(seq,
+ "Backbones announced for the mesh %s (orig %pM, group id %04x)\n",
+ net_dev->name, primary_addr,
+ ntohs(bat_priv->claim_dest.group));
+ seq_printf(seq, " %-17s %-5s %-9s (%-4s)\n",
+ "Originator", "VID", "last seen", "CRC");
+ for (i = 0; i < hash->size; i++) {
+ head = &hash->table[i];
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(backbone_gw, node, head, hash_entry) {
+ msecs = jiffies_to_msecs(jiffies -
+ backbone_gw->lasttime);
+ secs = msecs / 1000;
+ msecs = msecs % 1000;
+
+ is_own = batadv_compare_eth(backbone_gw->orig,
+ primary_addr);
+ if (is_own)
+ continue;
+
+ seq_printf(seq,
+ " * %pM on % 5d % 4i.%03is (%04x)\n",
+ backbone_gw->orig, backbone_gw->vid,
+ secs, msecs, backbone_gw->crc);
+ }
+ rcu_read_unlock();
+ }
+out:
+ if (primary_if)
+ batadv_hardif_free_ref(primary_if);
+ return ret;
+}