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| author | Tom Herbert <therbert@google.com> | 2014-11-06 18:06:01 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-06 21:59:55 -0500 |
| commit | 5c91ae08e4500ebc8efd584c8b87c4040d5393ea (patch) | |
| tree | 9410a4b74a22553c71df13e81a52425da31a1a7e /net/ipv4/tcp_input.c | |
| parent | a1f5313cc4325a1e0feb3dd1a20fca1844dce72b (diff) | |
| download | linux-5c91ae08e4500ebc8efd584c8b87c4040d5393ea.tar.bz2 | |
vxlan: Fix to enable UDP checksums on interface
Add definition to vxlan nla_policy for UDP checksum. This is necessary
to enable UDP checksums on VXLAN.
In some instances, enabling UDP checksums can improve performance on
receive for devices that return legacy checksum-unnecessary for UDP/IP.
Also, UDP checksum provides some protection against VNI corruption.
Testing:
Ran 200 instances of TCP_STREAM and TCP_RR on bnx2x.
TCP_STREAM
IPv4, without UDP checksums
14.41% TX CPU utilization
25.71% RX CPU utilization
9083.4 Mbps
IPv4, with UDP checksums
13.99% TX CPU utilization
13.40% RX CPU utilization
9095.65 Mbps
TCP_RR
IPv4, without UDP checksums
94.08% TX CPU utilization
156/248/462 90/95/99% latencies
1.12743e+06 tps
IPv4, with UDP checksums
94.43% TX CPU utilization
158/250/462 90/95/99% latencies
1.13345e+06 tps
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_input.c')
0 files changed, 0 insertions, 0 deletions