datapath-windows: check for 'gOvsSwitchContext' in ValidateNetlinkCmd()

Signed-off-by: Nithin Raju <nithin@vmware.com>
Acked-by: Eitan Eliahu <eliahue@vmware.com>
Acked-by: Alin Gabriel Serdean <aserdean@cloudbasesolutions.com>
Signed-off-by: Ben Pfaff <blp@nicira.com>

diff --git a/datapath-windows/ovsext/Datapath.c b/datapath-windows/ovsext/Datapath.c
index 281c3f6..edb2bde 100644 (file)
--- a/datapath-windows/ovsext/Datapath.c
+++ b/datapath-windows/ovsext/Datapath.c
@@ -891,8 +891,8 @@ ValidateNetlinkCmd(UINT32 devOp,
             /* Validate the DP for commands that require a DP. */
             if (nlFamilyOps->cmds[i].validateDpIndex == TRUE) {
                 OvsAcquireCtrlLock();
-                if (ovsMsg->ovsHdr.dp_ifindex !=
-                    (INT)gOvsSwitchContext->dpNo) {
+                if (!gOvsSwitchContext || ovsMsg->ovsHdr.dp_ifindex !=
+                                          (INT)gOvsSwitchContext->dpNo) {
                     status = STATUS_INVALID_PARAMETER;
                     OvsReleaseCtrlLock();
                     goto done;