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/*
* Copyright (c) 2014 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 __FLOW_H_
#define __FLOW_H_ 1
#include "precomp.h"
#include "Switch.h"
#include "User.h"
#include "NetProto.h"
#include "Datapath.h"
typedef struct _OvsFlow {
LIST_ENTRY ListEntry; // In Datapath's flowTable.
OvsFlowKey key;
UINT64 hash;
UINT32 actionsLen;
UINT8 tcpFlags;
UINT64 used;
UINT64 packetCount;
UINT64 byteCount;
UINT32 userActionsLen; // used for flow query
UINT32 actionBufferLen; // used for flow reuse
NL_ATTR actions[1];
} OvsFlow;
typedef struct _OvsLayers {
UINT32 l3Ofs; // IPv4, IPv6, ARP, or other L3 header.
UINT32 l4Ofs; // TCP, UDP, SCTP, ICMP, ICMPv6, or other L4 header.
UINT32 l7Ofs; // L4 protocol's payload.
} OvsLayers;
extern UINT64 ovsTimeIncrementPerTick;
NDIS_STATUS OvsDeleteFlowTable(OVS_DATAPATH *datapath);
NDIS_STATUS OvsAllocateFlowTable(OVS_DATAPATH *datapath,
POVS_SWITCH_CONTEXT switchContext);
NDIS_STATUS OvsGetFlowMetadata(OvsFlowKey *key,
PNL_ATTR *keyAttrs);
NDIS_STATUS OvsExtractLayers(const NET_BUFFER_LIST *packet,
POVS_PACKET_HDR_INFO layers);
NDIS_STATUS OvsExtractFlow(const NET_BUFFER_LIST *pkt, UINT32 inPort,
OvsFlowKey *flow, POVS_PACKET_HDR_INFO layers,
OvsIPTunnelKey *tunKey);
OvsFlow* OvsLookupFlow(OVS_DATAPATH *datapath, const OvsFlowKey *key,
UINT64 *hash, BOOLEAN hashValid);
OvsFlow* OvsLookupFlowRecirc(OVS_DATAPATH *datapath,
const OvsFlowKey *key,
UINT64 *hash);
UINT64 OvsHashFlow(const OvsFlowKey *key);
VOID OvsFlowUsed(OvsFlow *flow, const NET_BUFFER_LIST *pkt,
const POVS_PACKET_HDR_INFO layers);
NTSTATUS OvsDumpFlowIoctl(PVOID inputBuffer, UINT32 inputLength,
PVOID outputBuffer, UINT32 outputLength,
UINT32 *replyLen);
NTSTATUS OvsPutFlowIoctl(PVOID inputBuffer, UINT32 inputLength,
struct OvsFlowStats *stats);
NTSTATUS OvsGetFlowIoctl(PVOID inputBuffer, PVOID outputBuffer);
NTSTATUS OvsFlushFlowIoctl(UINT32 dpNo);
NTSTATUS OvsFlowNlCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
UINT32 *replyLen);
NTSTATUS OvsFlowNlGetCmdHandler(POVS_USER_PARAMS_CONTEXT usrParamsCtx,
UINT32 *replyLen);
NTSTATUS MapFlowKeyToNlKey(PNL_BUFFER nlBuf, OvsFlowKey *flowKey,
UINT16 keyType, UINT16 tunKeyType);
NTSTATUS MapFlowTunKeyToNlKey(PNL_BUFFER nlBuf, OvsIPTunnelKey *tunKey,
UINT16 tunKeyType);
VOID MapTunAttrToFlowPut(PNL_ATTR *keyAttrs, PNL_ATTR *tunAttrs,
OvsFlowKey *destKey);
UINT32 OvsFlowKeyAttrSize(void);
UINT32 OvsTunKeyAttrSize(void);
NTSTATUS
OvsTunnelAttrToIPTunnelKey(PNL_ATTR attr, OvsIPTunnelKey *tunKey);
UINT16 OvsGetFlowIPL2Offset(const OvsIPTunnelKey *tunKey);
/* Flags for tunneling */
#define OVS_TNL_F_DONT_FRAGMENT (1 << 0)
#define OVS_TNL_F_CSUM (1 << 1)
#define OVS_TNL_F_KEY (1 << 2)
#define OVS_TNL_F_OAM (1 << 3)
#define OVS_TNL_F_CRT_OPT (1 << 4)
#define OVS_TNL_F_GENEVE_OPT (1 << 5)
#define OVS_TNL_F_VXLAN_OPT (1 << 6)
#define OVS_TNL_HAS_OPTIONS (OVS_TNL_F_GENEVE_OPT | OVS_TNL_F_VXLAN_OPT)
#endif /* __FLOW_H_ */
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