[NETFILTER]: xt_hashlimit should use time_after_eq()

In order to avoid jiffies wraparound and its effect, special care must
be taken
when doing comparisons ...

Signed-off-by: Eric Dumazet <[email protected]>
Acked-by: Patrick McHardy <[email protected]>
Signed-off-by: David S. Miller <[email protected]>

diff --git a/net/netfilter/xt_hashlimit.c b/net/netfilter/xt_hashlimit.c
index 19103678bf2079bb3b4c3c937a6992744711bca1..2ef44d8560c154d944ea66e28e6505bc77c6222e 100644 (file)
--- a/net/netfilter/xt_hashlimit.c
+++ b/net/netfilter/xt_hashlimit.c
@@ -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,