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| author | David Ahern <dsahern@gmail.com> | 2018-12-11 18:57:22 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-12-14 15:44:47 -0800 |
| commit | 758a7f0b32ab890831d321145c3fe72bb85c0350 (patch) | |
| tree | 36eec8034afa8e82b1c1c90617322768c7b7d0fe /net/core/neighbour.c | |
| parent | 9c29a2f55ec05cc8b525ee3b2d75d3cd37911123 (diff) | |
| download | lwn-758a7f0b32ab890831d321145c3fe72bb85c0350.tar.gz lwn-758a7f0b32ab890831d321145c3fe72bb85c0350.zip | |
neighbor: Fix state check in neigh_forced_gc
PERMANENT entries are not on the gc_list so the state check is now
redundant. Also, the move to not purge entries until after 5 seconds
should not apply to FAILED entries; those can be removed immediately
to make way for newer ones. This restores the previous logic prior to
the gc_list.
Fixes: 58956317c8de ("neighbor: Improve garbage collection")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index 010784123bc1..acaa1a64150d 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -204,7 +204,6 @@ static int neigh_forced_gc(struct neigh_table *tbl) unsigned long tref = jiffies - 5 * HZ; u8 flags = NTF_EXT_LEARNED; struct neighbour *n, *tmp; - u8 state = NUD_PERMANENT; int shrunk = 0; NEIGH_CACHE_STAT_INC(tbl, forced_gc_runs); @@ -216,8 +215,8 @@ static int neigh_forced_gc(struct neigh_table *tbl) bool remove = false; write_lock(&n->lock); - if (!(n->nud_state & state) && !(n->flags & flags) && - time_after(tref, n->updated)) + if ((n->nud_state == NUD_FAILED) || + (!(n->flags & flags) && time_after(tref, n->updated))) remove = true; write_unlock(&n->lock); |