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/*
* 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 union _OVS_FWD_INFO *POVS_FWD_INFO;
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;
/* Length of option in int32 excluding the option header. */
UINT32 length:5;
/* Reserved. */
UINT32 reserved:3;
} 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,
OvsIPTunnelKey *tunKey,
POVS_SWITCH_CONTEXT switchContext,
POVS_PACKET_HDR_INFO layers,
PNET_BUFFER_LIST *newNbl,
POVS_FWD_INFO switchFwdInfo);
NDIS_STATUS OvsDecapGeneve(POVS_SWITCH_CONTEXT switchContext,
PNET_BUFFER_LIST curNbl,
OvsIPTunnelKey *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;
}
static __inline UINT32
OvsGetGeneveIPv6TunHdrMinSize(VOID)
{
/* XXX: Can L2 include VLAN at all? */
return sizeof (EthHdr) + sizeof (IPv6Hdr) + sizeof (UDPHdr) +
sizeof (GeneveHdr);
}
static __inline UINT32
OvsGetGeneveIPv6TunHdrMaxSize(VOID)
{
/* XXX: Can L2 include VLAN at all? */
return OvsGetGeneveIPv6TunHdrMinSize() + TUN_OPT_MAX_LEN;
}
static __inline UINT32
OvsGetGeneveTunHdrSizeFromLayers(POVS_PACKET_HDR_INFO layers)
{
return layers->l7Offset + sizeof(GeneveHdr);
}
#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_ */
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