@@ -34,6 +34,7 @@
#include "Vport.h"
#include "Vxlan.h"
#include "Geneve.h"
+#include "IpFragment.h"
#ifdef OVS_DBG_MOD
#undef OVS_DBG_MOD
@@ -873,6 +874,7 @@ OvsOutputForwardingCtx(OvsForwardingContext *ovsFwdCtx)
NDIS_STATUS status = STATUS_SUCCESS;
POVS_SWITCH_CONTEXT switchContext = ovsFwdCtx->switchContext;
PCWSTR dropReason;
+ PNET_BUFFER_LIST fragNbl = NULL;
/*
* Handle the case where the some of the destination ports are tunneled
@@ -918,6 +920,30 @@ OvsOutputForwardingCtx(OvsForwardingContext *ovsFwdCtx)
goto dropit;
}
+ if (ovsFwdCtx->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),
+ ovsFwdCtx->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->mru,
+ ovsFwdCtx->completionList,
+ &ovsFwdCtx->layers, FALSE);
+ }
+ }
+
OvsSendNBLIngress(ovsFwdCtx->switchContext, ovsFwdCtx->curNbl,
ovsFwdCtx->sendFlags);
/* End this pipeline by resetting the corresponding context. */
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 <kumaranand@vmware.com> --- v4->v3: No Change v2->v3: - Updated log message v1->v2: No change datapath-windows/ovsext/Actions.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) ---