Acked-by: Sairam Venugopal <vsai...@vmware.com>
On 3/24/17, 1:51 PM, "ovs-dev-boun...@openvswitch.org on behalf of Anand Kumar"
<ovs-dev-boun...@openvswitch.org on behalf of kumaran...@vmware.com> wrote:
>This patch adds support for Fragmenting NBL based on the MRU value.
>MRU value is updated only for Ipv4 fragments, if it is non zero, then
>fragment the NBL and send out the new NBL to the vnic.
>
>Signed-off-by: Anand Kumar <kumaran...@vmware.com>
>---
>v5->v6: No Change
>v4->v5:
> - Use MRU information in the _OVS_BUFFER_CONTEXT to fragment NBL.
>v3->v4: No Change
>v2->v3:
> - Updated log message
>v1->v2: No change
>---
> datapath-windows/ovsext/Actions.c | 27 +++++++++++++++++++++++++++
> 1 file changed, 27 insertions(+)
>
>diff --git a/datapath-windows/ovsext/Actions.c
>b/datapath-windows/ovsext/Actions.c
>index cbc7640..a68679c 100644
>--- a/datapath-windows/ovsext/Actions.c
>+++ b/datapath-windows/ovsext/Actions.c
>@@ -34,6 +34,7 @@
> #include "Vport.h"
> #include "Vxlan.h"
> #include "Geneve.h"
>+#include "IpFragment.h"
>
> #ifdef OVS_DBG_MOD
> #undef OVS_DBG_MOD
>@@ -864,6 +865,8 @@ OvsOutputForwardingCtx(OvsForwardingContext *ovsFwdCtx)
> NDIS_STATUS status = STATUS_SUCCESS;
> POVS_SWITCH_CONTEXT switchContext = ovsFwdCtx->switchContext;
> PCWSTR dropReason;
>+ PNET_BUFFER_LIST fragNbl = NULL;
>+ POVS_BUFFER_CONTEXT ctx;
>
> /*
> * Handle the case where the some of the destination ports are tunneled
>@@ -909,6 +912,30 @@ OvsOutputForwardingCtx(OvsForwardingContext *ovsFwdCtx)
> goto dropit;
> }
>
>+ ctx =
>(POVS_BUFFER_CONTEXT)NET_BUFFER_LIST_CONTEXT_DATA_START(ovsFwdCtx->curNbl);
>+ if (ctx->mru != 0) {
>+ /* Fragment nbl based on mru. If it returns NULL then the original
>+ * reassembled NBL is sent out to the VIF which will be dropped if
>+ * the packet size is more than VIF MTU.
>+ */
>+ fragNbl = OvsFragmentNBL(ovsFwdCtx->switchContext,
>+ ovsFwdCtx->curNbl,
>+ &(ovsFwdCtx->layers),
>+ ctx->mru, 0, TRUE);
>+ if (fragNbl != NULL) {
>+ OvsCompleteNBLForwardingCtx(ovsFwdCtx,
>+ L"Dropped since fragmenting NBL");
>+ status = OvsInitForwardingCtx(ovsFwdCtx,
>+ ovsFwdCtx->switchContext,
>+ fragNbl,
>+ ovsFwdCtx->srcVportNo,
>+ ovsFwdCtx->sendFlags,
>+
>NET_BUFFER_LIST_SWITCH_FORWARDING_DETAIL(fragNbl),
>+ ovsFwdCtx->completionList,
>+ &ovsFwdCtx->layers, FALSE);
>+ }
>+ }
>+
> OvsSendNBLIngress(ovsFwdCtx->switchContext, ovsFwdCtx->curNbl,
> ovsFwdCtx->sendFlags);
> /* End this pipeline by resetting the corresponding context. */
>--
>2.9.3.windows.1
>
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