* [PATCH resend] netfilter: remove modulo operations
@ 2010-11-12 15:59 Changli Gao
2010-11-12 16:35 ` Patrick McHardy
0 siblings, 1 reply; 2+ messages in thread
From: Changli Gao @ 2010-11-12 15:59 UTC (permalink / raw)
To: Patrick McHardy; +Cc: netfilter-devel, Eric Dumazet, Changli Gao
Signed-off-by: Changli Gao <xiaosuo@gmail.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
---
net/netfilter/xt_NFQUEUE.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/net/netfilter/xt_NFQUEUE.c b/net/netfilter/xt_NFQUEUE.c
index 039cce1..3962770 100644
--- a/net/netfilter/xt_NFQUEUE.c
+++ b/net/netfilter/xt_NFQUEUE.c
@@ -72,10 +72,12 @@ nfqueue_tg_v1(struct sk_buff *skb, const struct xt_action_param *par)
if (info->queues_total > 1) {
if (par->family == NFPROTO_IPV4)
- queue = hash_v4(skb) % info->queues_total + queue;
+ queue = (((u64) hash_v4(skb) * info->queues_total) >>
+ 32) + queue;
#if defined(CONFIG_IP6_NF_IPTABLES) || defined(CONFIG_IP6_NF_IPTABLES_MODULE)
else if (par->family == NFPROTO_IPV6)
- queue = hash_v6(skb) % info->queues_total + queue;
+ queue = (((u64) hash_v6(skb) * info->queues_total) >>
+ 32) + queue;
#endif
}
return NF_QUEUE_NR(queue);
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2010-11-12 15:59 [PATCH resend] netfilter: remove modulo operations Changli Gao
2010-11-12 16:35 ` Patrick McHardy
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