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authorDaniel Borkmann <dborkman@redhat.com>2014-08-23 20:58:54 +0200
committerDavid S. Miller <davem@davemloft.net>2014-08-23 12:21:21 -0700
commit8fc54f68919298ff9689d980efb495707ef43f30 (patch)
treec8a0c89621a9e670be02764a357bb6e73ed7ab6c /net/sched/sch_fq_codel.c
parentnet: Allow raw buffers to be passed into the flow dissector. (diff)
downloadlinux-dev-8fc54f68919298ff9689d980efb495707ef43f30.tar.xz
linux-dev-8fc54f68919298ff9689d980efb495707ef43f30.zip
net: use reciprocal_scale() helper
Replace open codings of (((u64) <x> * <y>) >> 32) with reciprocal_scale(). Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Cc: Hannes Frederic Sowa <hannes@stressinduktion.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched/sch_fq_codel.c')
-rw-r--r--net/sched/sch_fq_codel.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sched/sch_fq_codel.c b/net/sched/sch_fq_codel.c
index 063b726bf1f8..cc56c8bb9bed 100644
--- a/net/sched/sch_fq_codel.c
+++ b/net/sched/sch_fq_codel.c
@@ -77,7 +77,8 @@ static unsigned int fq_codel_hash(const struct fq_codel_sched_data *q,
hash = jhash_3words((__force u32)keys.dst,
(__force u32)keys.src ^ keys.ip_proto,
(__force u32)keys.ports, q->perturbation);
- return ((u64)hash * q->flows_cnt) >> 32;
+
+ return reciprocal_scale(hash, q->flows_cnt);
}
static unsigned int fq_codel_classify(struct sk_buff *skb, struct Qdisc *sch,