core: add stat to track unresolved discards in neighbor cache

[linux-2.6-omap-h63xx.git] / net / core / neighbour.c

diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index 65f01f71b3f34ceb0498cf5149a220fd4f178ad1..f62c8af85d389eed79b8f8fb4c86d24d476707b0 100644 (file)
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -930,6 +930,7 @@ int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
                                buff = neigh->arp_queue.next;
                                __skb_unlink(buff, &neigh->arp_queue);
                                kfree_skb(buff);
+                               NEIGH_CACHE_STAT_INC(neigh->tbl, unres_discards);
                        }
                        __skb_queue_tail(&neigh->arp_queue, skb);
                }
@@ -2462,12 +2463,12 @@ static int neigh_stat_seq_show(struct seq_file *seq, void *v)
        struct neigh_statistics *st = v;
 
        if (v == SEQ_START_TOKEN) {
-               seq_printf(seq, "entries  allocs destroys hash_grows  lookups hits  res_failed  rcv_probes_mcast rcv_probes_ucast  periodic_gc_runs forced_gc_runs\n");
+               seq_printf(seq, "entries  allocs destroys hash_grows  lookups hits  res_failed  rcv_probes_mcast rcv_probes_ucast  periodic_gc_runs forced_gc_runs unresolved_discards\n");
                return 0;
        }
 
        seq_printf(seq, "%08x  %08lx %08lx %08lx  %08lx %08lx  %08lx  "
-                       "%08lx %08lx  %08lx %08lx\n",
+                       "%08lx %08lx  %08lx %08lx %08lx\n",
                   atomic_read(&tbl->entries),
 
                   st->allocs,
@@ -2483,7 +2484,8 @@ static int neigh_stat_seq_show(struct seq_file *seq, void *v)
                   st->rcv_probes_ucast,
 
                   st->periodic_gc_runs,
-                  st->forced_gc_runs
+                  st->forced_gc_runs,
+                  st->unres_discards
                   );
 
        return 0;