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authorPatrick McHardy <kaber@trash.net>2006-08-13 18:06:02 -0700
committerDavid S. Miller <davem@davemloft.net>2006-08-13 18:06:02 -0700
commit1c7628bd7a458faf7c96ef521f6d3a5ea9b106b8 (patch)
tree45c4a21ee032a813df08dd4e4dc47b0a14fa571d /net/ipv4
parent97c802a113989800430a981b6f36b14c62163d37 (diff)
[NETFILTER]: xt_hashlimit: fix limit off-by-one
Hashlimit doesn't account for the first packet, which is inconsistent with the limit match. Reported by ryan.castellucci@gmail.com, netfilter bugzilla #500. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/netfilter/ipt_hashlimit.c11
1 files changed, 4 insertions, 7 deletions
diff --git a/net/ipv4/netfilter/ipt_hashlimit.c b/net/ipv4/netfilter/ipt_hashlimit.c
index 6b662449e82..3bd2368e1fc 100644
--- a/net/ipv4/netfilter/ipt_hashlimit.c
+++ b/net/ipv4/netfilter/ipt_hashlimit.c
@@ -454,15 +454,12 @@ hashlimit_match(const struct sk_buff *skb,
dh->rateinfo.credit_cap = user2credits(hinfo->cfg.avg *
hinfo->cfg.burst);
dh->rateinfo.cost = user2credits(hinfo->cfg.avg);
-
- spin_unlock_bh(&hinfo->lock);
- return 1;
+ } else {
+ /* update expiration timeout */
+ dh->expires = now + msecs_to_jiffies(hinfo->cfg.expire);
+ rateinfo_recalc(dh, now);
}
- /* update expiration timeout */
- dh->expires = now + msecs_to_jiffies(hinfo->cfg.expire);
-
- rateinfo_recalc(dh, now);
if (dh->rateinfo.credit >= dh->rateinfo.cost) {
/* We're underlimit. */
dh->rateinfo.credit -= dh->rateinfo.cost;