[ovs-dev] [PATCH] datapath-windows: Add LSOv2 support for VXLAN
Alin Serdean
aserdean at cloudbasesolutions.com
Fri Dec 11 17:27:46 UTC 2015
This patch adds LSO version 2 support for the windows datapath.
(https://msdn.microsoft.com/en-us/library/windows/hardware/ff568840%28v=vs.85%29.aspx)
Tested using psping and iperf3.
Signed-off-by: Alin Gabriel Serdean <aserdean at cloudbasesolutions.com>
---
datapath-windows/ovsext/Vxlan.c | 19 ++++++++++++++++---
1 file changed, 16 insertions(+), 3 deletions(-)
diff --git a/datapath-windows/ovsext/Vxlan.c b/datapath-windows/ovsext/Vxlan.c
index c0611da..8187c77 100644
--- a/datapath-windows/ovsext/Vxlan.c
+++ b/datapath-windows/ovsext/Vxlan.c
@@ -190,6 +190,7 @@ OvsDoEncapVxlan(POVS_VPORT_ENTRY vport,
POVS_VXLAN_VPORT vportVxlan;
UINT32 headRoom = OvsGetVxlanTunHdrSize();
UINT32 packetLength;
+ ULONG mss = 0;
/*
* XXX: the assumption currently is that the NBL is owned by OVS, and
@@ -204,12 +205,24 @@ OvsDoEncapVxlan(POVS_VPORT_ENTRY vport,
tsoInfo.Value = NET_BUFFER_LIST_INFO(curNbl,
TcpLargeSendNetBufferListInfo);
- OVS_LOG_TRACE("MSS %u packet len %u", tsoInfo.LsoV1Transmit.MSS,
+ switch (tsoInfo.Transmit.Type) {
+ case NDIS_TCP_LARGE_SEND_OFFLOAD_V1_TYPE:
+ mss = tsoInfo.LsoV1Transmit.MSS;
+ break;
+ case NDIS_TCP_LARGE_SEND_OFFLOAD_V2_TYPE:
+ mss = tsoInfo.LsoV2Transmit.MSS;
+ break;
+ default:
+ OVS_LOG_ERROR("Unknown LSO transmit type:%d",
+ tsoInfo.Transmit.Type);
+ return NDIS_STATUS_FAILURE;
+ }
+ OVS_LOG_TRACE("MSS %u packet len %u", mss,
packetLength);
- if (tsoInfo.LsoV1Transmit.MSS) {
+ if (mss) {
OVS_LOG_TRACE("l4Offset %d", layers->l4Offset);
*newNbl = OvsTcpSegmentNBL(switchContext, curNbl, layers,
- tsoInfo.LsoV1Transmit.MSS, headRoom);
+ mss, headRoom);
if (*newNbl == NULL) {
OVS_LOG_ERROR("Unable to segment NBL");
return NDIS_STATUS_FAILURE;
--
1.9.5.msysgit.0
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