sched: Call skb_get_hash_perturb in sch_fq_codel
Call skb_get_hash_perturb instead of doing skb_flow_dissect and then jhash by hand. Signed-off-by: Tom Herbert <tom@herbertland.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -23,7 +23,6 @@
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#include <linux/vmalloc.h>
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#include <linux/vmalloc.h>
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#include <net/netlink.h>
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#include <net/netlink.h>
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#include <net/pkt_sched.h>
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#include <net/pkt_sched.h>
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#include <net/flow_keys.h>
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#include <net/codel.h>
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#include <net/codel.h>
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/* Fair Queue CoDel.
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/* Fair Queue CoDel.
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@ -68,15 +67,9 @@ struct fq_codel_sched_data {
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};
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};
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static unsigned int fq_codel_hash(const struct fq_codel_sched_data *q,
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static unsigned int fq_codel_hash(const struct fq_codel_sched_data *q,
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const struct sk_buff *skb)
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struct sk_buff *skb)
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{
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{
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struct flow_keys keys;
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u32 hash = skb_get_hash_perturb(skb, q->perturbation);
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unsigned int hash;
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skb_flow_dissect(skb, &keys);
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hash = jhash_3words((__force u32)keys.dst,
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(__force u32)keys.src ^ keys.ip_proto,
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(__force u32)keys.ports, q->perturbation);
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return reciprocal_scale(hash, q->flows_cnt);
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return reciprocal_scale(hash, q->flows_cnt);
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}
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}
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