From mboxrd@z Thu Jan 1 00:00:00 1970 From: Changli Gao Subject: [PATCH] net_sched: cls_flow: add key rxhash Date: Sun, 22 Aug 2010 00:23:15 +0800 Message-ID: <1282407795-3449-1-git-send-email-xiaosuo@gmail.com> Cc: "David S. Miller" , netdev@vger.kernel.org, Changli Gao To: Jamal Hadi Salim Return-path: Received: from mail-pv0-f174.google.com ([74.125.83.174]:42235 "EHLO mail-pv0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751373Ab0HUQXk (ORCPT ); Sat, 21 Aug 2010 12:23:40 -0400 Received: by pvg2 with SMTP id 2so1662758pvg.19 for ; Sat, 21 Aug 2010 09:23:40 -0700 (PDT) Sender: netdev-owner@vger.kernel.org List-ID: We can use rxhash to classify the traffic into flows. As rxhash maybe supplied by NIC or RPS, it is cheaper. Signed-off-by: Changli Gao --- include/linux/pkt_cls.h | 1 + net/sched/cls_flow.c | 7 +++++++ 2 files changed, 8 insertions(+) diff --git a/include/linux/pkt_cls.h b/include/linux/pkt_cls.h index 7f6ba86..defbde2 100644 --- a/include/linux/pkt_cls.h +++ b/include/linux/pkt_cls.h @@ -332,6 +332,7 @@ enum { FLOW_KEY_SKUID, FLOW_KEY_SKGID, FLOW_KEY_VLAN_TAG, + FLOW_KEY_RXHASH, __FLOW_KEY_MAX, }; diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c index cd709f1..5b271a1 100644 --- a/net/sched/cls_flow.c +++ b/net/sched/cls_flow.c @@ -306,6 +306,11 @@ static u32 flow_get_vlan_tag(const struct sk_buff *skb) return tag & VLAN_VID_MASK; } +static u32 flow_get_rxhash(struct sk_buff *skb) +{ + return skb_get_rxhash(skb); +} + static u32 flow_key_get(struct sk_buff *skb, int key) { switch (key) { @@ -343,6 +348,8 @@ static u32 flow_key_get(struct sk_buff *skb, int key) return flow_get_skgid(skb); case FLOW_KEY_VLAN_TAG: return flow_get_vlan_tag(skb); + case FLOW_KEY_RXHASH: + return flow_get_rxhash(skb); default: WARN_ON(1); return 0;