batman-adv: B.A.T.M.A.N. V - implement bat_orig_print API

Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch>

diff --git a/net/batman-adv/bat_v.c b/net/batman-adv/bat_v.c
index 953c0d150231ffd7a88654b35992f5b428bc05fa..a90117c9a861ea2c8ed14016e50c6a3e176ad4dc 100644 (file)
--- a/net/batman-adv/bat_v.c
+++ b/net/batman-adv/bat_v.c
@@ -22,11 +22,17 @@
 #include <linux/bug.h>
 #include <linux/cache.h>
 #include <linux/init.h>
+#include <linux/jiffies.h>
+#include <linux/netdevice.h>
+#include <linux/rculist.h>
+#include <linux/rcupdate.h>
+#include <linux/seq_file.h>
 #include <linux/types.h>
 #include <linux/workqueue.h>
 
 #include "bat_v_elp.h"
 #include "bat_v_ogm.h"
+#include "hash.h"
 #include "originator.h"
 #include "packet.h"
 
@@ -81,6 +87,104 @@ static void batadv_v_ogm_emit(struct batadv_forw_packet *forw_packet)
 {
 }
 
+/**
+ * batadv_v_orig_print_neigh - print neighbors for the originator table
+ * @orig_node: the orig_node for which the neighbors are printed
+ * @if_outgoing: outgoing interface for these entries
+ * @seq: debugfs table seq_file struct
+ *
+ * Must be called while holding an rcu lock.
+ */
+static void
+batadv_v_orig_print_neigh(struct batadv_orig_node *orig_node,
+                         struct batadv_hard_iface *if_outgoing,
+                         struct seq_file *seq)
+{
+       struct batadv_neigh_node *neigh_node;
+       struct batadv_neigh_ifinfo *n_ifinfo;
+
+       hlist_for_each_entry_rcu(neigh_node, &orig_node->neigh_list, list) {
+               n_ifinfo = batadv_neigh_ifinfo_get(neigh_node, if_outgoing);
+               if (!n_ifinfo)
+                       continue;
+
+               seq_printf(seq, " %pM (%9u.%1u)",
+                          neigh_node->addr,
+                          n_ifinfo->bat_v.throughput / 10,
+                          n_ifinfo->bat_v.throughput % 10);
+
+               batadv_neigh_ifinfo_put(n_ifinfo);
+       }
+}
+
+/**
+ * batadv_v_orig_print - print the originator table
+ * @bat_priv: the bat priv with all the soft interface information
+ * @seq: debugfs table seq_file struct
+ * @if_outgoing: the outgoing interface for which this should be printed
+ */
+static void batadv_v_orig_print(struct batadv_priv *bat_priv,
+                               struct seq_file *seq,
+                               struct batadv_hard_iface *if_outgoing)
+{
+       struct batadv_neigh_node *neigh_node;
+       struct batadv_hashtable *hash = bat_priv->orig_hash;
+       int last_seen_msecs, last_seen_secs;
+       struct batadv_orig_node *orig_node;
+       struct batadv_neigh_ifinfo *n_ifinfo;
+       unsigned long last_seen_jiffies;
+       struct hlist_head *head;
+       int batman_count = 0;
+       u32 i;
+
+       seq_printf(seq, "  %-15s %s (%11s) %17s [%10s]: %20s ...\n",
+                  "Originator", "last-seen", "throughput", "Nexthop",
+                  "outgoingIF", "Potential nexthops");
+
+       for (i = 0; i < hash->size; i++) {
+               head = &hash->table[i];
+
+               rcu_read_lock();
+               hlist_for_each_entry_rcu(orig_node, head, hash_entry) {
+                       neigh_node = batadv_orig_router_get(orig_node,
+                                                           if_outgoing);
+                       if (!neigh_node)
+                               continue;
+
+                       n_ifinfo = batadv_neigh_ifinfo_get(neigh_node,
+                                                          if_outgoing);
+                       if (!n_ifinfo)
+                               goto next;
+
+                       last_seen_jiffies = jiffies - orig_node->last_seen;
+                       last_seen_msecs = jiffies_to_msecs(last_seen_jiffies);
+                       last_seen_secs = last_seen_msecs / 1000;
+                       last_seen_msecs = last_seen_msecs % 1000;
+
+                       seq_printf(seq, "%pM %4i.%03is (%9u.%1u) %pM [%10s]:",
+                                  orig_node->orig, last_seen_secs,
+                                  last_seen_msecs,
+                                  n_ifinfo->bat_v.throughput / 10,
+                                  n_ifinfo->bat_v.throughput % 10,
+                                  neigh_node->addr,
+                                  neigh_node->if_incoming->net_dev->name);
+
+                       batadv_v_orig_print_neigh(orig_node, if_outgoing, seq);
+                       seq_puts(seq, "\n");
+                       batman_count++;
+
+next:
+                       batadv_neigh_node_put(neigh_node);
+                       if (n_ifinfo)
+                               batadv_neigh_ifinfo_put(n_ifinfo);
+               }
+               rcu_read_unlock();
+       }
+
+       if (batman_count == 0)
+               seq_puts(seq, "No batman nodes in range ...\n");
+}
+
 static int batadv_v_neigh_cmp(struct batadv_neigh_node *neigh1,
                              struct batadv_hard_iface *if_outgoing1,
                              struct batadv_neigh_node *neigh2,
@@ -123,6 +227,7 @@ static struct batadv_algo_ops batadv_batman_v __read_mostly = {
        .bat_hardif_neigh_init = batadv_v_hardif_neigh_init,
        .bat_ogm_emit = batadv_v_ogm_emit,
        .bat_ogm_schedule = batadv_v_ogm_schedule,
+       .bat_orig_print = batadv_v_orig_print,
        .bat_neigh_cmp = batadv_v_neigh_cmp,
        .bat_neigh_is_similar_or_better = batadv_v_neigh_is_sob,
 };