From 08bfc9cb76e26d2489c401fb1d2de58d06fd1ded Mon Sep 17 00:00:00 2001 From: Erik Hugne Date: Thu, 22 Jan 2015 17:10:32 +0100 Subject: [PATCH] flow_dissector: add tipc support The flows are hashed on the sending node address, which allows us to spread out the TIPC link processing to RPS enabled cores. There is no point to include the destination address in the hash as that will always be the same for all inbound links. We have experimented with a 3-tuple hash over [srcnode, sport, dport], but this showed to give slightly lower performance because of increased lock contention when the same link was handled by multiple cores. Signed-off-by: Ying Xue Signed-off-by: Erik Hugne Reviewed-by: Jon Maloy Signed-off-by: David S. Miller --- net/core/flow_dissector.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 45084938c403..beb83d1ac1c6 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -178,6 +178,20 @@ bool __skb_flow_dissect(const struct sk_buff *skb, struct flow_keys *flow, return false; } } + case htons(ETH_P_TIPC): { + struct { + __be32 pre[3]; + __be32 srcnode; + } *hdr, _hdr; + hdr = __skb_header_pointer(skb, nhoff, sizeof(_hdr), data, hlen, &_hdr); + if (!hdr) + return false; + flow->src = hdr->srcnode; + flow->dst = 0; + flow->n_proto = proto; + flow->thoff = (u16)nhoff; + return true; + } case htons(ETH_P_FCOE): flow->thoff = (u16)(nhoff + FCOE_HEADER_LEN); /* fall through */ -- GitLab