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authorErik Hugne <erik.hugne@ericsson.com>2015-01-22 17:10:32 +0100
committerDavid S. Miller <davem@davemloft.net>2015-01-26 16:58:09 -0800
commit08bfc9cb76e26d2489c401fb1d2de58d06fd1ded (patch)
treea8de79af22702cfac387c99f3190b31b6534310e
parent3fa9cacd697eb26d99c59a8479d8a1b3d6311182 (diff)
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 <ying.xue@windriver.com> Signed-off-by: Erik Hugne <erik.hugne@ericsson.com> Reviewed-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/core/flow_dissector.c14
1 files changed, 14 insertions, 0 deletions
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 @@ ipv6:
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 */