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authorDuan Jiong <duanj.fnst@cn.fujitsu.com>2014-02-27 17:14:41 +0800
committerDavid S. Miller <davem@davemloft.net>2014-02-27 18:21:17 -0500
commitfeff9ab2e7fa773b6a3965f77375fe89f7fd85cf (patch)
treea8b1f2cc3069397a30b39abc5e56613686334b4f /net
parent352063c839ba9605a3b9ebbc1906f32ec5d8e269 (diff)
downloadlinux-feff9ab2e7fa773b6a3965f77375fe89f7fd85cf.tar.gz
neigh: recompute reachabletime before returning from neigh_periodic_work()
If the neigh table's entries is less than gc_thresh1, the function will return directly, and the reachabletime will not be recompute, so the reachabletime can be guessed. Signed-off-by: Duan Jiong <duanj.fnst@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/core/neighbour.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c
index e1aa0f36cfe..e16129019c6 100644
--- a/net/core/neighbour.c
+++ b/net/core/neighbour.c
@@ -766,9 +766,6 @@ static void neigh_periodic_work(struct work_struct *work)
nht = rcu_dereference_protected(tbl->nht,
lockdep_is_held(&tbl->lock));
- if (atomic_read(&tbl->entries) < tbl->gc_thresh1)
- goto out;
-
/*
* periodically recompute ReachableTime from random function
*/
@@ -781,6 +778,9 @@ static void neigh_periodic_work(struct work_struct *work)
neigh_rand_reach_time(NEIGH_VAR(p, BASE_REACHABLE_TIME));
}
+ if (atomic_read(&tbl->entries) < tbl->gc_thresh1)
+ goto out;
+
for (i = 0 ; i < (1 << nht->hash_shift); i++) {
np = &nht->hash_buckets[i];