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sched: Call skb_get_hash_perturb in sch_hhf

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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>
This commit is contained in:
Tom Herbert 2015-05-01 11:30:14 -07:00 committed by David S. Miller
parent 342db22182
commit f969777ac3
1 changed files with 1 additions and 18 deletions
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19
net/sched/sch_hhf.c
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@ -9,7 +9,6 @@
#include <linux/module.h>
#include <linux/skbuff.h>
#include <linux/vmalloc.h>
#include <net/flow_keys.h>
#include <net/pkt_sched.h>
#include <net/sock.h>
@ -176,22 +175,6 @@ static u32 hhf_time_stamp(void)
return jiffies;
}
static unsigned int skb_hash(const struct hhf_sched_data *q,
const struct sk_buff *skb)
{
struct flow_keys keys;
unsigned int hash;
if (skb->sk && skb->sk->sk_hash)
return skb->sk->sk_hash;
skb_flow_dissect(skb, &keys);
hash = jhash_3words((__force u32)keys.dst,
(__force u32)keys.src ^ keys.ip_proto,
(__force u32)keys.ports, q->perturbation);
return hash;
}
/* Looks up a heavy-hitter flow in a chaining list of table T. */
static struct hh_flow_state *seek_list(const u32 hash,
struct list_head *head,
@ -280,7 +263,7 @@ static enum wdrr_bucket_idx hhf_classify(struct sk_buff *skb, struct Qdisc *sch)
}
/* Get hashed flow-id of the skb. */
hash = skb_hash(q, skb);
hash = skb_get_hash_perturb(skb, q->perturbation);
/* Check if this packet belongs to an already established HH flow. */
flow_pos = hash & HHF_BIT_MASK;