batman-adv: export single hop neighbor list via debugfs

[deliverable/linux.git] / net / batman-adv / bat_iv_ogm.c

diff --git a/net/batman-adv/bat_iv_ogm.c b/net/batman-adv/bat_iv_ogm.c
index 912d9c36fb1c9e63d1358bd044f5a0218f2f4d77..1efdb5ccfb234f3648fa537d78f756c1c93fc319 100644 (file)
--- a/net/batman-adv/bat_iv_ogm.c
+++ b/net/batman-adv/bat_iv_ogm.c
@@ -1861,6 +1861,58 @@ next:
                seq_puts(seq, "No batman nodes in range ...\n");
 }
 
+/**
+ * batadv_iv_hardif_neigh_print - print a single hop neighbour node
+ * @seq: neighbour table seq_file struct
+ * @hardif_neigh: hardif neighbour information
+ */
+static void
+batadv_iv_hardif_neigh_print(struct seq_file *seq,
+                            struct batadv_hardif_neigh_node *hardif_neigh)
+{
+       int last_secs, last_msecs;
+
+       last_secs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen) / 1000;
+       last_msecs = jiffies_to_msecs(jiffies - hardif_neigh->last_seen) % 1000;
+
+       seq_printf(seq, "   %10s   %pM %4i.%03is\n",
+                  hardif_neigh->if_incoming->net_dev->name,
+                  hardif_neigh->addr, last_secs, last_msecs);
+}
+
+/**
+ * batadv_iv_ogm_neigh_print - print the single hop neighbour list
+ * @bat_priv: the bat priv with all the soft interface information
+ * @seq: neighbour table seq_file struct
+ */
+static void batadv_iv_neigh_print(struct batadv_priv *bat_priv,
+                                 struct seq_file *seq)
+{
+       struct net_device *net_dev = (struct net_device *)seq->private;
+       struct batadv_hardif_neigh_node *hardif_neigh;
+       struct batadv_hard_iface *hard_iface;
+       int batman_count = 0;
+
+       seq_printf(seq, "   %10s        %-13s %s\n",
+                  "IF", "Neighbor", "last-seen");
+
+       rcu_read_lock();
+       list_for_each_entry_rcu(hard_iface, &batadv_hardif_list, list) {
+               if (hard_iface->soft_iface != net_dev)
+                       continue;
+
+               hlist_for_each_entry_rcu(hardif_neigh,
+                                        &hard_iface->neigh_list, list) {
+                       batadv_iv_hardif_neigh_print(seq, hardif_neigh);
+                       batman_count++;
+               }
+       }
+       rcu_read_unlock();
+
+       if (batman_count == 0)
+               seq_puts(seq, "No batman nodes in range ...\n");
+}
+
 /**
  * batadv_iv_ogm_neigh_cmp - compare the metrics of two neighbors
  * @neigh1: the first neighbor object of the comparison
@@ -1954,6 +2006,7 @@ static struct batadv_algo_ops batadv_batman_iv __read_mostly = {
        .bat_ogm_emit = batadv_iv_ogm_emit,
        .bat_neigh_cmp = batadv_iv_ogm_neigh_cmp,
        .bat_neigh_is_equiv_or_better = batadv_iv_ogm_neigh_is_eob,
+       .bat_neigh_print = batadv_iv_neigh_print,
        .bat_orig_print = batadv_iv_ogm_orig_print,
        .bat_orig_free = batadv_iv_ogm_orig_free,
        .bat_orig_add_if = batadv_iv_ogm_orig_add_if,