From: Daniel Borkmann <dborkman@redhat.com>
Date: Wed, 28 Aug 2013 20:13:10 +0000 (+0200)
Subject: net: packet: use reciprocal_divide in fanout_demux_hash
X-Git-Tag: v3.12-rc1~132^2~148
X-Git-Url: http://pileus.org/git/?a=commitdiff_plain;h=f55d112e529386af3667fac3a507132a361b2154;p=~andy%2Flinux

net: packet: use reciprocal_divide in fanout_demux_hash

Instead of hard-coding reciprocal_divide function, use the inline
function from reciprocal_div.h.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index bee9bfdc8d0..2e8286b47c2 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -1135,7 +1135,7 @@ static unsigned int fanout_demux_hash(struct packet_fanout *f,
 				      struct sk_buff *skb,
 				      unsigned int num)
 {
-	return (((u64)skb->rxhash) * num) >> 32;
+	return reciprocal_divide(skb->rxhash, num);
 }
 
 static unsigned int fanout_demux_lb(struct packet_fanout *f,