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 6705d35b17c..7e60466f571 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;
+}