[B.A.T.M.A.N.] [RFC 3/5] batman-adv: ELP - exporting neighbor list via debugfs

Marek Lindner
2012-03-22T21:51:13Z

From: Linus Luessing <linus.luessing@web.de>

Lists all neighbours and their tq/rq values detected and measured by the Echo
Location Protocol (ELP).

Developed by Linus during a 6 months trainee study period in Ascom (Switzerland)
AG.

Signed-off-by: Linus Luessing <linus.luessing@web.de>
Signed-off-by: Marek Lindner <lindner_marek@yahoo.de>
---
bat_debugfs.c | 16 +++++++++++++
bat_v_elp.c | 67 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 83 insertions(+), 0 deletions(-)

diff --git a/bat_debugfs.c b/bat_debugfs.c
index 3b588f8..5365554 100644
--- a/bat_debugfs.c
+++ b/bat_debugfs.c
@@ -227,6 +227,16 @@ static int bat_algorithms_open(struct inode *inode, struct file *file)
return single_open(file, bat_algo_seq_print_text, NULL);
}

+#ifdef CONFIG_BATMAN_ADV_BATMAN_V
+int bat_v_elp_seq_print_text(struct seq_file *seq, void *offset);
+
+static int neighbors_open(struct inode *inode, struct file *file)
+{
+ struct net_device *net_dev = (struct net_device *)inode->i_private;
+ return single_open(file, bat_v_elp_seq_print_text, net_dev);
+}
+#endif
+
static int originators_open(struct inode *inode, struct file *file)
{
struct net_device *net_dev = (struct net_device *)inode->i_private;
@@ -283,6 +293,9 @@ struct bat_debuginfo bat_debuginfo_##_name = { \
};

static BAT_DEBUGINFO(routing_algos, S_IRUGO, bat_algorithms_open);
+#ifdef CONFIG_BATMAN_ADV_BATMAN_V
+static BAT_DEBUGINFO(neighbors, S_IRUGO, neighbors_open);
+#endif
static BAT_DEBUGINFO(originators, S_IRUGO, originators_open);
static BAT_DEBUGINFO(gateways, S_IRUGO, gateways_open);
static BAT_DEBUGINFO(transtable_global, S_IRUGO, transtable_global_open);
@@ -293,6 +306,9 @@ static BAT_DEBUGINFO(transtable_local, S_IRUGO, transtable_local_open);
static BAT_DEBUGINFO(vis_data, S_IRUGO, vis_data_open);

static struct bat_debuginfo *mesh_debuginfos[] = {
+#ifdef CONFIG_BATMAN_ADV_BATMAN_V
+ &bat_debuginfo_neighbors,
+#endif
&bat_debuginfo_originators,
&bat_debuginfo_gateways,
&bat_debuginfo_transtable_global,
diff --git a/bat_v_elp.c b/bat_v_elp.c
index e252c04..9232f28 100644
--- a/bat_v_elp.c
+++ b/bat_v_elp.c
@@ -394,6 +394,73 @@ out:
return NET_RX_SUCCESS;
}

+static void bat_v_elp_seq_print_neigh(struct seq_file *seq,
+ struct hard_iface *hard_iface,
+ struct neigh_node *neigh_node)
+{
+ int last_secs, last_msecs;
+
+ last_secs = jiffies_to_msecs(jiffies - neigh_node->last_seen) / 1000;
+ last_msecs = jiffies_to_msecs(jiffies - neigh_node->last_seen) % 1000;
+
+ seq_printf(seq, "%pM %4i.%03is (%3i,%3i) [%10s]\n",
+ neigh_node->addr, last_secs, last_msecs, neigh_node->tq,
+ neigh_node->rq, hard_iface->net_dev->name);
+}
+
+int bat_v_elp_seq_print_text(struct seq_file *seq, void *offset)
+{
+ struct net_device *net_dev = (struct net_device *)seq->private;
+ struct bat_priv *bat_priv = netdev_priv(net_dev);
+ struct hard_iface *hard_iface, *primary_if;
+ struct neigh_node *neigh_node;
+ struct hlist_node *node;
+ int ret = 0, batman_count = 0;
+
+ primary_if = 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 != IF_ACTIVE) {
+ ret = seq_printf(seq, "BATMAN mesh %s "
+ "disabled - primary interface not active\n",
+ net_dev->name);
+ goto out;
+ }
+
+ seq_printf(seq, "[B.A.T.M.A.N. adv %s, MainIF/MAC: %s/%pM (%s)]\n",
+ SOURCE_VERSION, primary_if->net_dev->name,
+ primary_if->net_dev->dev_addr, net_dev->name);
+ seq_printf(seq, " %-15s %s (%s/%i) [%10s]\n",
+ "Neighbor", "last-seen", "#TQ,#RQ", TQ_MAX_VALUE, "IF");
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(hard_iface, &hardif_list, list) {
+ if (hard_iface->soft_iface != net_dev)
+ continue;
+
+ hlist_for_each_entry_rcu(neigh_node, node,
+ &hard_iface->neigh_list, list) {
+ bat_v_elp_seq_print_neigh(seq, hard_iface, neigh_node);
+ batman_count++;
+ }
+ }
+ rcu_read_unlock();
+
+ if (batman_count == 0)
+ seq_printf(seq, "No batman nodes in range ...\n");
+
+out:
+ if (primary_if)
+ hardif_free_ref(primary_if);
+ return ret;
+}
+
static struct bat_algo_ops batman_v __read_mostly = {
.name = "BATMAN V",
.bat_iface_enable = bat_v_elp_iface_enable,
--
1.7.9.1