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authorDaniel Borkmann <dborkman@redhat.com>2014-01-22 02:29:40 +0100
committerDavid S. Miller <davem@davemloft.net>2014-01-21 23:17:20 -0800
commit89770b0a69ee0e0e5e99c722192d535115f73778 (patch)
treea8c96a91c2417dc81f5ce08aa59ebcfd456e0335 /net/packet
parentf337db64af059c9a94278a8b0ab97d87259ff62f (diff)
downloadop-kernel-dev-89770b0a69ee0e0e5e99c722192d535115f73778.zip
op-kernel-dev-89770b0a69ee0e0e5e99c722192d535115f73778.tar.gz
net: introduce reciprocal_scale helper and convert users
As David Laight suggests, we shouldn't necessarily call this reciprocal_divide() when users didn't requested a reciprocal_value(); lets keep the basic idea and call it reciprocal_scale(). More background information on this topic can be found in [1]. Joint work with Hannes Frederic Sowa. [1] http://homepage.cs.uiowa.edu/~jones/bcd/divide.html Suggested-by: David Laight <david.laight@aculab.com> Cc: Jakub Zawadzki <darkjames-ws@darkjames.pl> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/af_packet.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index df3cbdd..9734616 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -88,7 +88,6 @@
#include <linux/virtio_net.h>
#include <linux/errqueue.h>
#include <linux/net_tstamp.h>
-#include <linux/reciprocal_div.h>
#include <linux/percpu.h>
#ifdef CONFIG_INET
#include <net/inet_common.h>
@@ -1262,7 +1261,7 @@ static unsigned int fanout_demux_hash(struct packet_fanout *f,
struct sk_buff *skb,
unsigned int num)
{
- return reciprocal_divide(skb->rxhash, num);
+ return reciprocal_scale(skb->rxhash, num);
}
static unsigned int fanout_demux_lb(struct packet_fanout *f,
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