[NETFILTER]: xt_hashlimit should use time_after_eq()
authorEric Dumazet <dada1@cosmosbay.com>
Wed, 12 Dec 2007 19:11:28 +0000 (11:11 -0800)
committerDavid S. Miller <davem@sunset.davemloft.net>
Fri, 14 Dec 2007 21:54:36 +0000 (13:54 -0800)
In order to avoid jiffies wraparound and its effect, special care must
be taken
when doing comparisons ...

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Acked-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/netfilter/xt_hashlimit.c

index 1910367..2ef44d8 100644 (file)
@@ -240,7 +240,7 @@ static bool select_all(const struct xt_hashlimit_htable *ht,
 static bool select_gc(const struct xt_hashlimit_htable *ht,
                      const struct dsthash_ent *he)
 {
-       return jiffies >= he->expires;
+       return time_after_eq(jiffies, he->expires);
 }
 
 static void htable_selective_cleanup(struct xt_hashlimit_htable *ht,