From 5c89b171e28fb9b1a60992ea65e226273b474c5a Mon Sep 17 00:00:00 2001 From: Pravin B Shelar Date: Wed, 4 Dec 2013 11:26:44 -0800 Subject: [PATCH] datapath: lisp: Use skb rxhash for source port. Rather than using complete flow hash, we can use skb->rxhash for calculating source port. Similar calculation is done by vxlan. Signed-off-by: Pravin B Shelar Acked-by: Jesse Gross --- datapath/vport-lisp.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-) diff --git a/datapath/vport-lisp.c b/datapath/vport-lisp.c index e4e603fbb..c2698ae9d 100644 --- a/datapath/vport-lisp.c +++ b/datapath/vport-lisp.c @@ -165,12 +165,17 @@ static __be64 instance_id_to_tunnel_id(__u8 *iid) */ static u16 get_src_port(struct sk_buff *skb) { - int low; - int high; + u32 hash = skb_get_rxhash(skb); unsigned int range; - struct sw_flow_key *pkt_key = OVS_CB(skb)->pkt_key; - u32 hash = jhash2((const u32 *)pkt_key, - sizeof(*pkt_key) / sizeof(u32), 0); + int high; + int low; + + if (!hash) { + struct sw_flow_key *pkt_key = OVS_CB(skb)->pkt_key; + + hash = jhash2((const u32 *)pkt_key, + sizeof(*pkt_key) / sizeof(u32), 0); + } inet_get_local_port_range(&low, &high); range = (high - low) + 1; -- 2.47.0