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| author |   Tom Herbert <therbert@google.com> | 2011-08-14 19:46:29 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-08-17 20:06:03 -0700 |
| commit | c6865cb3cc6f3c2857fa4c6f5fda2945d70b1e84 (patch) | |
| tree | 2c575583ebc973f56714d5ab6751b8745972fd6f /fs/fcntl.c | |
| parent | rps: Infrastructure in __skb_get_rxhash for deep inspection (diff) | |
| download | linux-dev-c6865cb3cc6f3c2857fa4c6f5fda2945d70b1e84.tar.xz linux-dev-c6865cb3cc6f3c2857fa4c6f5fda2945d70b1e84.zip | |
rps: Inspect GRE encapsulated packets to get flow hash
Crack open GRE packets in __skb_get_rxhash to compute 4-tuple hash on
in encapsulated packet. Note that this is used only when the
__skb_get_rxhash is taken, in particular only when the device does
not compute provide the rxhash (ie. feature is disabled).
This was tested by creating a single GRE tunnel between two 16 core
AMD machines. 200 netperf TCP_RR streams were ran with 1 byte
request and response size.
Without patch: 157497 tps, 50/90/99% latencies 1250/1292/1364 usecs
With patch: 325896 tps, 50/90/99% latencies 603/848/1169
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'fs/fcntl.c')
0 files changed, 0 insertions, 0 deletions