| Message ID | 1415325961-23053-1-git-send-email-therbert@google.com |
|---|---|
| State | Accepted, archived |
| Delegated to: | David Miller |
| Headers | show |
From: Tom Herbert <therbert@google.com> Date: Thu, 6 Nov 2014 18:06:01 -0800 > 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: ... > Signed-off-by: Tom Herbert <therbert@google.com> Applied, thanks Tom. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c index ca30982..0ab4114 100644 --- a/drivers/net/vxlan.c +++ b/drivers/net/vxlan.c @@ -2233,6 +2233,9 @@ static const struct nla_policy vxlan_policy[IFLA_VXLAN_MAX + 1] = { [IFLA_VXLAN_L2MISS] = { .type = NLA_U8 }, [IFLA_VXLAN_L3MISS] = { .type = NLA_U8 }, [IFLA_VXLAN_PORT] = { .type = NLA_U16 }, + [IFLA_VXLAN_UDP_CSUM] = { .type = NLA_U8 }, + [IFLA_VXLAN_UDP_ZERO_CSUM6_TX] = { .type = NLA_U8 }, + [IFLA_VXLAN_UDP_ZERO_CSUM6_RX] = { .type = NLA_U8 }, }; static int vxlan_validate(struct nlattr *tb[], struct nlattr *data[])
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> --- drivers/net/vxlan.c | 3 +++ 1 file changed, 3 insertions(+)