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/*
* Copyright (c) 2014, 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 __OFFLOAD_H_
#define __OFFLOAD_H_ 1
typedef union _OVS_PACKET_HDR_INFO *POVS_PACKET_HDR_INFO;
UINT16 CalculateChecksum(UINT8 *ptr, UINT16 length, UINT16 initial);
UINT16 CopyAndCalculateChecksum(UINT8 *dst, UINT8 *src, UINT16 length,
UINT16 initial);
UINT16 IPChecksum(UINT8 *ipHdr, UINT16 length, UINT16 initial);
UINT16 IPPseudoChecksum(UINT32 *src, UINT32 *dst, UINT8 protocol,
UINT16 totalLength);
UINT16 IPv6PseudoChecksum(UINT32 *src, UINT32 *dst, UINT8 protocol,
UINT16 totalLength);
UINT16 ChecksumUpdate32(UINT16 oldSum, UINT32 prev, UINT32 newValue);
UINT16 ChecksumUpdate16(UINT16 oldSum, UINT16 prev, UINT16 newValue);
UINT16 CalculateChecksumNB(const PNET_BUFFER nb, UINT16 csumDataLen,
UINT32 offset);
NDIS_STATUS OvsValidateIPChecksum(PNET_BUFFER_LIST curNbl,
POVS_PACKET_HDR_INFO hdrInfo);
NDIS_STATUS OvsValidateUDPChecksum(PNET_BUFFER_LIST curNbl,
BOOLEAN udpCsumZero);
NDIS_STATUS
OvsCalculateUDPChecksum(PNET_BUFFER_LIST curNbl,
PNET_BUFFER curNb,
EthHdr *ethHdr,
UDPHdr *udpHdr,
UINT32 packetLength,
POVS_PACKET_HDR_INFO layers);
ULONG OVSGetTcpMSS(PNET_BUFFER_LIST nbl);
NDIS_STATUS OvsApplySWChecksumOnNB(POVS_PACKET_HDR_INFO layers,
PNET_BUFFER_LIST nbl,
PNDIS_TCP_IP_CHECKSUM_NET_BUFFER_LIST_INFO
csumInfo);
#endif /* __OFFLOAD_H_ */
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