datapath-windows: Add Geneve support

Signed-off-by: Yin Lin <linyi@vmware.com>
Acked-by: Nithin Raju <nithin@vmware.com>
Signed-off-by: Gurucharan Shetty <guru@ovn.org>

1 files changed, 121 insertions, 0 deletions

diff --git a/datapath-windows/ovsext/Geneve.h b/datapath-windows/ovsext/Geneve.h
new file mode 100644
index 000000000..057f80a05
--- /dev/null
+++ b/datapath-windows/ovsext/Geneve.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2016 VMware, Inc.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+
+#ifndef __GENEVE_H_
+#define __GENEVE_H_ 1
+
+#include "NetProto.h"
+typedef struct _OVS_GENEVE_VPORT {
+    UINT16 dstPort;
+    UINT64 filterID;
+    UINT64 ipId;
+    /*
+     * To be filled
+     */
+} OVS_GENEVE_VPORT, *POVS_GENEVE_VPORT;
+
+/* Geneve Header:
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |Ver|  Opt Len  |O|C|    Rsvd.  |          Protocol Type        |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |        Virtual Network Identifier (VNI)       |    Reserved   |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |                    Variable Length Options                    |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Option Header:
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |          Option Class         |      Type     |R|R|R| Length  |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *  |                      Variable Option Data                     |
+ *  +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ */
+typedef struct GeneveHdr {
+    /* Length of options fields in int32 excluding the common header */
+    UINT32   optLen : 6;
+    /* Version. */
+    UINT32   version:2;
+    /* Reserved. */
+    UINT32   reserved1 : 6;
+    /* Critical options present */
+    UINT32   critical : 1;
+    /* This packet contains a control message instead of a data payload */
+    UINT32   oam:1;
+    /* Protocol Type. */
+    UINT32   protocol:16;
+    /* VNI */
+    UINT32   vni:24;
+    /* Reserved. */
+    UINT32   reserved2:8;
+} GeneveHdr;
+
+typedef struct GeneveOptionHdr {
+    /* Namespace for the 'type' field. */
+    UINT32   optionClass:16;
+    /* Format of data contained in the option. */
+    UINT32   type:8;
+    /* Reserved. */
+    UINT32   reserved:3;
+    /* Length of option in int32 excluding the option header. */
+    UINT32   length:5;
+} GeneveOptionHdr;
+
+#define GENEVE_CRIT_OPT_TYPE (1 << 7)
+
+NTSTATUS OvsInitGeneveTunnel(POVS_VPORT_ENTRY vport,
+                             UINT16 udpDestPort);
+
+VOID OvsCleanupGeneveTunnel(POVS_VPORT_ENTRY vport);
+
+
+NDIS_STATUS OvsEncapGeneve(POVS_VPORT_ENTRY vport,
+                           PNET_BUFFER_LIST curNbl,
+                           OvsIPv4TunnelKey *tunKey,
+                           POVS_SWITCH_CONTEXT switchContext,
+                           POVS_PACKET_HDR_INFO layers,
+                           PNET_BUFFER_LIST *newNbl);
+
+NDIS_STATUS OvsDecapGeneve(POVS_SWITCH_CONTEXT switchContext,
+                           PNET_BUFFER_LIST curNbl,
+                           OvsIPv4TunnelKey *tunKey,
+                           PNET_BUFFER_LIST *newNbl);
+
+static __inline UINT32
+OvsGetGeneveTunHdrMinSize(VOID)
+{
+    /* XXX: Can L2 include VLAN at all? */
+    return sizeof (EthHdr) + sizeof (IPHdr) + sizeof (UDPHdr) +
+           sizeof (GeneveHdr);
+}
+
+static __inline UINT32
+OvsGetGeneveTunHdrMaxSize(VOID)
+{
+    /* XXX: Can L2 include VLAN at all? */
+    return OvsGetGeneveTunHdrMinSize() + TUN_OPT_MAX_LEN;
+}
+
+#define GENEVE_UDP_PORT 6081
+#define GENEVE_UDP_PORT_NBO 0xC117
+#define GENEVE_VER 0
+#define GENEVE_DEFAULT_TTL 64
+#define GENEVE_ID_IS_VALID(geneveID) (0 < (geneveID) && (vxlanID) <= 0xffffff)
+#define GENEVE_TUNNELID_TO_VNI(_tID)   (UINT32)(((UINT64)(_tID)) >> 40)
+#define GENEVE_VNI_TO_TUNNELID(_vni) (((UINT64)(_vni)) << 40)
+#define ETH_P_TEB_NBO       0x5865          /* Trans Ether Bridging */
+
+#endif /* __GENEVE_H_ */