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windows-nt/Source/XPSP1/NT/net/nwlink/spx/spxpkt.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1989-1993 Microsoft Corporation
Module Name:
spxpkt.c
Abstract:
This module contains code that builds various spx packets.
Author:
Nikhil Kamkolkar (nikhilk) 11-November-1993
Environment:
Kernel mode
Revision History:
--*/
#include "precomp.h"
#pragma hdrstop
// Define module number for event logging entries
#define FILENUM SPXPKT
VOID
SpxPktBuildCr(
IN PSPX_CONN_FILE pSpxConnFile,
IN PSPX_ADDR pSpxAddr,
IN OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN BOOLEAN fSpx2
)
/*++
Routine Description:
NOTE: If *ppPkt is NULL, we allocate a packet. If not, we just
recreate the data and don't update the packet's state.
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pCrPkt;
PSPX_SEND_RESD pSendResd;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PNDIS_BUFFER pNdisMacHdr, pNdisIpxHdr;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
if (*ppPkt == NULL) {
SpxAllocSendPacket(SpxDevice, &pCrPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
DBGPRINT(CONNECT, ERR,
("SpxConnHandleConnReq: Could not allocate ndis packet\n"));
return;
}
} else {
pCrPkt = *ppPkt;
}
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pCrPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pCrPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
NdisQueryPacket(pCrPkt, NULL, NULL, &pNdisMacHdr, NULL);
pNdisIpxHdr = NDIS_BUFFER_LINKAGE(pNdisMacHdr);
if (!fSpx2)
{
NdisAdjustBufferLength(pNdisIpxHdr, MIN_IPXSPX_HDRSIZE);
}
SpxBuildIpxHdr(
pIpxSpxHdr,
MIN_IPXSPX_HDRSIZE,
pSpxConnFile->scf_RemAddr,
pSpxAddr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl = (SPX_CC_SYS | SPX_CC_ACK |
(fSpx2 ? (SPX_CC_SPX2 | SPX_CC_NEG) : 0));
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = 0xFFFF;
pIpxSpxHdr->hdr_SeqNum = 0;
pIpxSpxHdr->hdr_AckNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
// Initialize
if (*ppPkt == NULL) {
pSendResd = (PSPX_SEND_RESD)(pCrPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_CR;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_Len = pSendResd->sr_HdrLen = MIN_IPXSPX_HDRSIZE;
*ppPkt = pCrPkt;
}
return;
}
VOID
SpxPktBuildCrAck(
IN PSPX_CONN_FILE pSpxConnFile,
IN PSPX_ADDR pSpxAddr,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN BOOLEAN fNeg,
IN BOOLEAN fSpx2
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pCrAckPkt;
PSPX_SEND_RESD pSendResd;
PIPXSPX_HDR pIpxSpxHdr;
NDIS_STATUS ndisStatus;
USHORT hdrLen;
PNDIS_BUFFER pNdisMacHdr, pNdisIpxHdr;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
*ppPkt = NULL;
SpxAllocSendPacket(SpxDevice, &pCrAckPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
DBGPRINT(CONNECT, ERR,
("SpxConnHandleConnReq: Could not allocate ndis packet\n"));
return;
}
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pCrAckPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pCrAckPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
hdrLen = (SPX2_CONN(pSpxConnFile) ? MIN_IPXSPX2_HDRSIZE : MIN_IPXSPX_HDRSIZE);
NdisQueryPacket(pCrAckPkt, NULL, NULL, &pNdisMacHdr, NULL);
pNdisIpxHdr = NDIS_BUFFER_LINKAGE(pNdisMacHdr);
if (!SPX2_CONN(pSpxConnFile))
{
NdisAdjustBufferLength(pNdisIpxHdr, MIN_IPXSPX_HDRSIZE);
}
SpxBuildIpxHdr(
pIpxSpxHdr,
hdrLen,
pSpxConnFile->scf_RemAddr,
pSpxAddr->sa_Socket);
pIpxSpxHdr->hdr_ConnCtrl =
(SPX_CC_SYS |
(fSpx2 ? SPX_CC_SPX2 : 0) |
(fNeg ? SPX_CC_NEG : 0));
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
pIpxSpxHdr->hdr_SeqNum = 0;
pIpxSpxHdr->hdr_AckNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
if (SPX2_CONN(pSpxConnFile))
{
DBGPRINT(CONNECT, DBG,
("SpxConnBuildCrAck: Spx2 packet size %d.%lx\n",
pSpxConnFile->scf_MaxPktSize));
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
}
pSendResd = (PSPX_SEND_RESD)(pCrAckPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_CRACK;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_Len = pSendResd->sr_HdrLen = hdrLen;
*ppPkt = pCrAckPkt;
return;
}
VOID
SpxPktBuildSn(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
PSPX_SEND_RESD pSendResd;
PNDIS_BUFFER pBuf;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PBYTE pData;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
do
{
*ppPkt = NULL;
// Allocate a ndis packet for the cr.
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
break;
}
CTEAssert(pSpxConnFile->scf_MaxPktSize != 0);
DBGPRINT(SEND, DBG,
("SpxPktBuildSn: Data size %lx\n", pSpxConnFile->scf_MaxPktSize));
if ((pData =
SpxAllocateMemory(
pSpxConnFile->scf_MaxPktSize - MIN_IPXSPX2_HDRSIZE)) == NULL)
{
SpxPktSendRelease(pPkt);
break;
}
// Build ndis buffer desc
NdisAllocateBuffer(
&ndisStatus,
&pBuf,
SpxDevice->dev_NdisBufferPoolHandle,
pData,
pSpxConnFile->scf_MaxPktSize - MIN_IPXSPX2_HDRSIZE);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
SpxPktSendRelease(pPkt);
SpxFreeMemory(pData);
break;
}
// Chain at back.
NdisChainBufferAtBack(
pPkt,
pBuf);
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
SpxBuildIpxHdr(
pIpxSpxHdr,
pSpxConnFile->scf_MaxPktSize,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl = ( SPX_CC_SYS | SPX_CC_ACK |
SPX_CC_NEG | SPX_CC_SPX2);
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
pIpxSpxHdr->hdr_SeqNum = 0;
pIpxSpxHdr->hdr_AckNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
// Init the data part to indicate no neg values
*(UNALIGNED ULONG *)pData = 0;
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_SN;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = (State | SPX_SENDPKT_FREEDATA);
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_HdrLen = MIN_IPXSPX2_HDRSIZE;
pSendResd->sr_Len = pSpxConnFile->scf_MaxPktSize;
*ppPkt = pPkt;
} while (FALSE);
return;
}
VOID
SpxPktBuildSnAck(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PSPX_SEND_RESD pSendResd;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
do
{
*ppPkt = NULL;
// Allocate a ndis packet for the cr.
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
break;
}
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
SpxBuildIpxHdr(
pIpxSpxHdr,
MIN_IPXSPX2_HDRSIZE,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl = (SPX_CC_SYS | SPX_CC_NEG | SPX_CC_SPX2);
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
pIpxSpxHdr->hdr_SeqNum = 0;
pIpxSpxHdr->hdr_AckNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_SNACK;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_Len = pSendResd->sr_HdrLen = MIN_IPXSPX2_HDRSIZE;
*ppPkt = pPkt;
} while (FALSE);
return;
}
VOID
SpxPktBuildSs(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
PSPX_SEND_RESD pSendResd;
PNDIS_BUFFER pBuf;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PBYTE pData;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
do
{
*ppPkt = NULL;
// Allocate a ndis packet for the cr.
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
break;
}
CTEAssert(pSpxConnFile->scf_MaxPktSize != 0);
DBGPRINT(SEND, DBG,
("SpxPktBuildSs: Data size %lx\n", pSpxConnFile->scf_MaxPktSize));
if ((pData =
SpxAllocateMemory(
pSpxConnFile->scf_MaxPktSize - MIN_IPXSPX2_HDRSIZE)) == NULL)
{
SpxPktSendRelease(pPkt);
break;
}
// Build ndis buffer desc
NdisAllocateBuffer(
&ndisStatus,
&pBuf,
SpxDevice->dev_NdisBufferPoolHandle,
pData,
pSpxConnFile->scf_MaxPktSize - MIN_IPXSPX2_HDRSIZE);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
SpxPktSendRelease(pPkt);
SpxFreeMemory(pData);
break;
}
// Chain at back.
NdisChainBufferAtBack(
pPkt,
pBuf);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
SpxBuildIpxHdr(
pIpxSpxHdr,
pSpxConnFile->scf_MaxPktSize,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl =
(SPX_CC_SYS | SPX_CC_ACK | SPX_CC_SPX2 |
((pSpxConnFile->scf_Flags & SPX_CONNFILE_NEG) ? SPX_CC_NEG : 0));
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
pIpxSpxHdr->hdr_SeqNum = 0;
pIpxSpxHdr->hdr_AckNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
// Init the data part to indicate no neg values
*(UNALIGNED ULONG *)pData = 0;
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_SS;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = (State | SPX_SENDPKT_FREEDATA);
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_HdrLen = MIN_IPXSPX2_HDRSIZE;
pSendResd->sr_Len = pSpxConnFile->scf_MaxPktSize;
*ppPkt = pPkt;
} while (FALSE);
return;
}
VOID
SpxPktBuildSsAck(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PSPX_SEND_RESD pSendResd;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
do
{
*ppPkt = NULL;
// Allocate a ndis packet for the cr.
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
break;
}
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
SpxBuildIpxHdr(
pIpxSpxHdr,
MIN_IPXSPX2_HDRSIZE,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl =
(SPX_CC_SYS | SPX_CC_SPX2 |
((pSpxConnFile->scf_Flags & SPX_CONNFILE_NEG) ? SPX_CC_NEG : 0));
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
pIpxSpxHdr->hdr_SeqNum = 0;
pIpxSpxHdr->hdr_AckNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_SSACK;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_Len = pSendResd->sr_HdrLen = MIN_IPXSPX2_HDRSIZE;
*ppPkt = pPkt;
} while (FALSE);
return;
}
VOID
SpxPktBuildRr(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT SeqNum,
IN USHORT State
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
PSPX_SEND_RESD pSendResd;
PNDIS_BUFFER pBuf;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PBYTE pData;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
do
{
*ppPkt = NULL;
// Allocate a ndis packet for the cr.
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
break;
}
if ((pData =
SpxAllocateMemory(
pSpxConnFile->scf_MaxPktSize - MIN_IPXSPX2_HDRSIZE)) == NULL)
{
SpxPktSendRelease(pPkt);
break;
}
// Build ndis buffer desc
NdisAllocateBuffer(
&ndisStatus,
&pBuf,
SpxDevice->dev_NdisBufferPoolHandle,
pData,
pSpxConnFile->scf_MaxPktSize - MIN_IPXSPX2_HDRSIZE);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
SpxPktSendRelease(pPkt);
SpxFreeMemory(pData);
break;
}
// Chain at back.
NdisChainBufferAtBack(
pPkt,
pBuf);
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
SpxBuildIpxHdr(
pIpxSpxHdr,
pSpxConnFile->scf_MaxPktSize,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl = ( SPX_CC_SYS | SPX_CC_ACK |
SPX_CC_NEG | SPX_CC_SPX2);
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
// For a renegotiate request, we use the sequence number of
// the first waiting data packet. Passed in.
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
SeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AckNum,
pSpxConnFile->scf_RecvSeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
// Init the data part to indicate no neg values
*(UNALIGNED ULONG *)pData = 0;
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_RR;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = (State | SPX_SENDPKT_FREEDATA);
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_SeqNum = SeqNum;
pSendResd->sr_HdrLen = MIN_IPXSPX2_HDRSIZE;
pSendResd->sr_Len = pSpxConnFile->scf_MaxPktSize;
*ppPkt = pPkt;
} while (FALSE);
return;
}
VOID
SpxPktBuildRrAck(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN USHORT MaxPktSize
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
PSPX_SEND_RESD pSendResd;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
do
{
*ppPkt = NULL;
// Allocate a ndis packet for the cr.
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
break;
}
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
SpxBuildIpxHdr(
pIpxSpxHdr,
MIN_IPXSPX2_HDRSIZE,
pSpxConnFile->scf_RemAckAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl = (SPX_CC_SYS | SPX_CC_NEG | SPX_CC_SPX2);
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
pSpxConnFile->scf_SendSeqNum);
// For the RrAck, ack number will be the appropriate number
// for the last data packet received.
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AckNum,
pSpxConnFile->scf_RenegAckAckNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
MaxPktSize);
DBGPRINT(SEND, DBG3,
("SpxPktBuildRrAck: SEQ %lx ACKNUM %lx ALLOCNUM %lx MAXPKT %lx\n",
pSpxConnFile->scf_SendSeqNum,
pSpxConnFile->scf_RenegAckAckNum,
pSpxConnFile->scf_SentAllocNum,
MaxPktSize));
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_RRACK;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_Len = pSendResd->sr_HdrLen = MIN_IPXSPX2_HDRSIZE;
*ppPkt = pPkt;
} while (FALSE);
return;
}
VOID
SpxPktBuildDisc(
IN PSPX_CONN_FILE pSpxConnFile,
IN PREQUEST pRequest,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN UCHAR DataType
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSPX_SEND_RESD pSendResd;
PNDIS_PACKET pDiscPkt;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
USHORT hdrLen;
PNDIS_BUFFER pNdisMacHdr, pNdisIpxHdr;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
*ppPkt = NULL;
SpxAllocSendPacket(SpxDevice, &pDiscPkt, &ndisStatus);
if (ndisStatus == NDIS_STATUS_SUCCESS)
{
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pDiscPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pDiscPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
hdrLen = SPX2_CONN(pSpxConnFile) ? MIN_IPXSPX2_HDRSIZE : MIN_IPXSPX_HDRSIZE;
NdisQueryPacket(pDiscPkt, NULL, NULL, &pNdisMacHdr, NULL);
pNdisIpxHdr = NDIS_BUFFER_LINKAGE(pNdisMacHdr);
if (!SPX2_CONN(pSpxConnFile))
{
NdisAdjustBufferLength(pNdisIpxHdr, MIN_IPXSPX_HDRSIZE);
}
SpxBuildIpxHdr(
pIpxSpxHdr,
hdrLen,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl =
(SPX_CC_ACK |
(SPX2_CONN(pSpxConnFile) ? SPX_CC_SPX2 : 0) |
((DataType == SPX2_DT_IDISC) ? 0 : SPX_CC_EOM));
pIpxSpxHdr->hdr_DataType = DataType;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId =
*((UNALIGNED USHORT *)&pSpxConnFile->scf_RemConnId);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
pSpxConnFile->scf_SendSeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AckNum,
pSpxConnFile->scf_RecvSeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
if (SPX2_CONN(pSpxConnFile))
{
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
}
pSendResd = (PSPX_SEND_RESD)(pDiscPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_State = State;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_Type =
((DataType == SPX2_DT_IDISC) ? SPX_TYPE_IDISC : SPX_TYPE_ORDREL);
pSendResd->sr_Next = NULL;
pSendResd->sr_Request = pRequest;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Offset = 0;
pSendResd->sr_SeqNum = pSpxConnFile->scf_SendSeqNum;
pSendResd->sr_Len =
pSendResd->sr_HdrLen = hdrLen;
*ppPkt = pDiscPkt;
}
return;
}
VOID
SpxPktBuildProbe(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN BOOLEAN fSpx2
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PSPX_SEND_RESD pSendResd;
PNDIS_PACKET pProbe;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
USHORT hdrLen;
PNDIS_BUFFER pNdisMacHdr, pNdisIpxHdr;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
*ppPkt = NULL;
SpxAllocSendPacket(SpxDevice, &pProbe, &ndisStatus);
if (ndisStatus == NDIS_STATUS_SUCCESS)
{
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pProbe, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pProbe +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
hdrLen = (fSpx2 ? MIN_IPXSPX2_HDRSIZE : MIN_IPXSPX_HDRSIZE);
NdisQueryPacket(pProbe, NULL, NULL, &pNdisMacHdr, NULL);
pNdisIpxHdr = NDIS_BUFFER_LINKAGE(pNdisMacHdr);
if (!fSpx2)
{
NdisAdjustBufferLength(pNdisIpxHdr, MIN_IPXSPX_HDRSIZE);
}
SpxBuildIpxHdr(
pIpxSpxHdr,
hdrLen,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl = (SPX_CC_SYS | SPX_CC_ACK |
(fSpx2 ? SPX_CC_SPX2 : 0));
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId =
*((UNALIGNED USHORT *)&pSpxConnFile->scf_RemConnId);
if (fSpx2)
{
pIpxSpxHdr->hdr_SeqNum = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
}
else
{
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
pSpxConnFile->scf_SendSeqNum);
}
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AckNum,
pSpxConnFile->scf_RecvSeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
pSendResd = (PSPX_SEND_RESD)(pProbe->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = SPX_TYPE_PROBE;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_Next = NULL;
pSendResd->sr_Request = NULL;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Len =
pSendResd->sr_HdrLen = (fSpx2 ? MIN_IPXSPX2_HDRSIZE
: MIN_IPXSPX_HDRSIZE);
*ppPkt = pProbe;
}
return;
}
VOID
SpxPktBuildData(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN USHORT Length
)
/*++
Routine Description:
Handles zero length sends.
Arguments:
Return Value:
--*/
{
PNDIS_BUFFER pNdisBuffer;
PSPX_SEND_RESD pSendResd;
PNDIS_PACKET pDataPkt;
NDIS_STATUS ndisStatus;
PIPXSPX_HDR pIpxSpxHdr;
USHORT hdrLen;
PNDIS_BUFFER pNdisMacHdr, pNdisIpxHdr;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
*ppPkt = NULL;
SpxAllocSendPacket(SpxDevice, &pDataPkt, &ndisStatus);
if (ndisStatus == NDIS_STATUS_SUCCESS)
{
// Make a ndis buffer descriptor for the data if present.
if (Length > 0)
{
SpxCopyBufferChain(
&ndisStatus,
&pNdisBuffer,
SpxDevice->dev_NdisBufferPoolHandle,
REQUEST_TDI_BUFFER(pSpxConnFile->scf_ReqPkt),
pSpxConnFile->scf_ReqPktOffset,
Length);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
// Free the send packet
SpxPktSendRelease(pDataPkt);
return;
}
// Chain this in the packet
NdisChainBufferAtBack(pDataPkt, pNdisBuffer);
}
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pDataPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pDataPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
hdrLen = SPX2_CONN(pSpxConnFile) ? MIN_IPXSPX2_HDRSIZE : MIN_IPXSPX_HDRSIZE;
Length += hdrLen;
NdisQueryPacket(pDataPkt, NULL, NULL, &pNdisMacHdr, NULL);
pNdisIpxHdr = NDIS_BUFFER_LINKAGE(pNdisMacHdr);
if (!SPX2_CONN(pSpxConnFile))
{
NdisAdjustBufferLength(pNdisIpxHdr, MIN_IPXSPX_HDRSIZE);
}
SpxBuildIpxHdr(
pIpxSpxHdr,
Length,
pSpxConnFile->scf_RemAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
// Build SPX Header.
pIpxSpxHdr->hdr_ConnCtrl =
(((State & SPX_SENDPKT_ACKREQ) ? SPX_CC_ACK : 0) |
((State & SPX_SENDPKT_EOM) ? SPX_CC_EOM : 0) |
(SPX2_CONN(pSpxConnFile) ? SPX_CC_SPX2 : 0));
pIpxSpxHdr->hdr_DataType = pSpxConnFile->scf_DataType;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId =
*((UNALIGNED USHORT *)&pSpxConnFile->scf_RemConnId);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
pSpxConnFile->scf_SendSeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AckNum,
pSpxConnFile->scf_RecvSeqNum);
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
if (SPX2_CONN(pSpxConnFile))
{
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
}
pSendResd = (PSPX_SEND_RESD)(pDataPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_State = State;
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_Type = SPX_TYPE_DATA;
pSendResd->sr_Next = NULL;
pSendResd->sr_Request = pSpxConnFile->scf_ReqPkt;
pSendResd->sr_Offset = pSpxConnFile->scf_ReqPktOffset;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_SeqNum = pSpxConnFile->scf_SendSeqNum;
pSendResd->sr_Len = Length;
pSendResd->sr_HdrLen = hdrLen;
if (State & SPX_SENDPKT_ACKREQ)
{
KeQuerySystemTime((PLARGE_INTEGER)&pSendResd->sr_SentTime);
}
CTEAssert(pSendResd->sr_Len <= pSpxConnFile->scf_MaxPktSize);
*ppPkt = pDataPkt;
// Ok, allocation succeeded. Increment send seq.
pSpxConnFile->scf_SendSeqNum++;
}
return;
}
VOID
SpxCopyBufferChain(
OUT PNDIS_STATUS Status,
OUT PNDIS_BUFFER * TargetChain,
IN NDIS_HANDLE PoolHandle,
IN PNDIS_BUFFER SourceChain,
IN UINT Offset,
IN UINT Length
)
/*++
Routine Description:
Creates a TargetBufferChain from the SourceBufferChain. The copy begins at
the 'Offset' location in the source chain. It copies 'Length' bytes. It also
handles Length = 0. If we run out of source chain before copying length amount
of bytes or run out of memory to create any more buffers for the target chain,
we clean up the partial chain created so far.
Arguments:
Status - Status of the request.
TargetChain - Pointer to the allocated buffer descriptor.
PoolHandle - Handle that is used to specify the pool.
SourceChain - Pointer to the descriptor of the source memory.
Offset - The Offset in the sources memory from which the copy is to
begin
Length - Number of Bytes to copy.
Return Value:
None.
--*/
{
UINT BytesBeforeCurBuffer = 0;
PNDIS_BUFFER CurBuffer = SourceChain;
UINT BytesLeft;
UINT AvailableBytes;
PNDIS_BUFFER NewNdisBuffer, StartTargetChain;
CTEAssert( SourceChain );
// First of all find the source buffer that contains data that starts at
// Offset.
NdisQueryBuffer( CurBuffer, NULL, &AvailableBytes );
while ( BytesBeforeCurBuffer + AvailableBytes <= Offset ) {
BytesBeforeCurBuffer += AvailableBytes;
CurBuffer = CurBuffer->Next;
if ( CurBuffer ) {
NdisQueryBuffer( CurBuffer, NULL, &AvailableBytes );
} else {
break;
}
}
if ( ! CurBuffer ) {
*Status = STATUS_UNSUCCESSFUL;
return;
}
//
// Copy the first buffer. This takes care of Length = 0.
//
BytesLeft = Length;
//
// ( Offset - BytesBeforeCurBuffer ) gives us the offset within this buffer.
//
AvailableBytes -= ( Offset - BytesBeforeCurBuffer );
if ( AvailableBytes > BytesLeft ) {
AvailableBytes = BytesLeft;
}
NdisCopyBuffer(
Status,
&NewNdisBuffer,
PoolHandle,
CurBuffer,
Offset - BytesBeforeCurBuffer,
AvailableBytes);
if ( *Status != NDIS_STATUS_SUCCESS ) {
return;
}
StartTargetChain = NewNdisBuffer;
BytesLeft -= AvailableBytes;
//
// Did the first buffer have enough data. If so, we r done.
//
if ( ! BytesLeft ) {
*TargetChain = StartTargetChain;
return;
}
//
// Now follow the Mdl chain and copy more buffers.
//
CurBuffer = CurBuffer->Next;
NdisQueryBuffer( CurBuffer, NULL, &AvailableBytes );
while ( CurBuffer ) {
if ( AvailableBytes > BytesLeft ) {
AvailableBytes = BytesLeft;
}
NdisCopyBuffer(
Status,
&(NDIS_BUFFER_LINKAGE(NewNdisBuffer)),
PoolHandle,
CurBuffer,
0,
AvailableBytes);
if ( *Status != NDIS_STATUS_SUCCESS ) {
//
// ran out of resources. put back what we've used in this call and
// return the error.
//
while ( StartTargetChain != NULL) {
NewNdisBuffer = NDIS_BUFFER_LINKAGE( StartTargetChain );
NdisFreeBuffer ( StartTargetChain );
StartTargetChain = NewNdisBuffer;
}
return;
}
NewNdisBuffer = NDIS_BUFFER_LINKAGE(NewNdisBuffer);
BytesLeft -= AvailableBytes;
if ( ! BytesLeft ) {
*TargetChain = StartTargetChain;
return;
}
CurBuffer = CurBuffer->Next;
NdisQueryBuffer( CurBuffer, NULL, &AvailableBytes );
}
//
// Ran out of source chain. This should not happen.
//
CTEAssert( FALSE );
// For Retail build we clean up anyways.
while ( StartTargetChain != NULL) {
NewNdisBuffer = NDIS_BUFFER_LINKAGE( StartTargetChain );
NdisFreeBuffer ( StartTargetChain );
StartTargetChain = NewNdisBuffer;
}
*Status = STATUS_UNSUCCESSFUL;
return;
}
VOID
SpxPktBuildAck(
IN PSPX_CONN_FILE pSpxConnFile,
OUT PNDIS_PACKET * ppPkt,
IN USHORT State,
IN BOOLEAN fBuildNack,
IN USHORT NumToResend
)
/*++
Routine Description:
Arguments:
Return Value:
--*/
{
PNDIS_PACKET pPkt;
PSPX_SEND_RESD pSendResd;
PIPXSPX_HDR pIpxSpxHdr;
NDIS_STATUS ndisStatus;
USHORT hdrLen;
PNDIS_BUFFER pNdisMacHdr, pNdisIpxHdr;
PNDIS_BUFFER NdisBuf, NdisBuf2;
ULONG BufLen = 0;
BOOLEAN fSpx2 = SPX_CONN_FLAG(pSpxConnFile, SPX_CONNFILE_SPX2);
*ppPkt = NULL;
SpxAllocSendPacket(SpxDevice, &pPkt, &ndisStatus);
if (ndisStatus != NDIS_STATUS_SUCCESS)
{
DBGPRINT(SEND, ERR,
("SpxPktBuildAck: Could not allocate ndis packet\n"));
return;
}
//
// Get the MDL that points to the IPX/SPX header. (the second one)
//
NdisQueryPacket(pPkt, NULL, NULL, &NdisBuf, NULL);
NdisGetNextBuffer(NdisBuf, &NdisBuf2);
NdisQueryBuffer(NdisBuf2, (PUCHAR) &pIpxSpxHdr, &BufLen);
#if OWN_PKT_POOLS
pIpxSpxHdr = (PIPXSPX_HDR)((PBYTE)pPkt +
NDIS_PACKET_SIZE +
sizeof(SPX_SEND_RESD) +
IpxInclHdrOffset);
#endif
hdrLen = SPX2_CONN(pSpxConnFile) ? MIN_IPXSPX2_HDRSIZE : MIN_IPXSPX_HDRSIZE;
NdisQueryPacket(pPkt, NULL, NULL, &pNdisMacHdr, NULL);
pNdisIpxHdr = NDIS_BUFFER_LINKAGE(pNdisMacHdr);
if (!fSpx2)
{
NdisAdjustBufferLength(pNdisIpxHdr, MIN_IPXSPX_HDRSIZE);
}
// Send where data came from
SpxBuildIpxHdr(
pIpxSpxHdr,
hdrLen,
pSpxConnFile->scf_RemAckAddr,
pSpxConnFile->scf_AddrFile->saf_Addr->sa_Socket);
pIpxSpxHdr->hdr_ConnCtrl = (SPX_CC_SYS | (fSpx2 ? SPX_CC_SPX2 : 0));
pIpxSpxHdr->hdr_DataType = 0;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SrcConnId,
pSpxConnFile->scf_LocalConnId);
pIpxSpxHdr->hdr_DestConnId = pSpxConnFile->scf_RemConnId;
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AckNum,
pSpxConnFile->scf_RecvSeqNum);
if (fSpx2)
{
pIpxSpxHdr->hdr_SeqNum = 0;
if (fBuildNack)
{
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
NumToResend);
}
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_NegSize,
pSpxConnFile->scf_MaxPktSize);
}
else
{
// Put current send seq number in packet for spx1
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_SeqNum,
pSpxConnFile->scf_SendSeqNum);
}
PUTSHORT2SHORT(
&pIpxSpxHdr->hdr_AllocNum,
pSpxConnFile->scf_SentAllocNum);
pSendResd = (PSPX_SEND_RESD)(pPkt->ProtocolReserved);
pSendResd->sr_Id = IDENTIFIER_SPX;
pSendResd->sr_Type = (fBuildNack ? SPX_TYPE_DATANACK : SPX_TYPE_DATAACK);
pSendResd->sr_Reserved1 = NULL;
pSendResd->sr_Reserved2 = NULL;
pSendResd->sr_State = State;
pSendResd->sr_ConnFile = pSpxConnFile;
pSendResd->sr_Request = NULL;
pSendResd->sr_Next = NULL;
pSendResd->sr_Len = pSendResd->sr_HdrLen = hdrLen;
*ppPkt = pPkt;
return;
}
VOID
SpxPktRecvRelease(
IN PNDIS_PACKET pPkt
)
{
((PSPX_RECV_RESD)(pPkt->ProtocolReserved))->rr_State = SPX_RECVPKT_IDLE;
SpxFreeRecvPacket(SpxDevice, pPkt);
return;
}
VOID
SpxPktSendRelease(
IN PNDIS_PACKET pPkt
)
{
PNDIS_BUFFER pBuf, pIpxSpxBuf, pFreeBuf;
UINT bufCount;
CTEAssert((((PSPX_SEND_RESD)(pPkt->ProtocolReserved))->sr_State &
SPX_SENDPKT_IPXOWNS) == 0);
NdisQueryPacket(pPkt, NULL, &bufCount, &pBuf, NULL);
// BufCount == 1 for only the header. That's ok, we just reset the length
// and free the packet to the buffer pools. Else we need to free user buffers
// before that.
NdisUnchainBufferAtFront(
pPkt,
&pBuf);
NdisUnchainBufferAtFront(
pPkt,
&pIpxSpxBuf);
//
// Set the header length to the max. that can be needed.
//
NdisAdjustBufferLength(pIpxSpxBuf, MIN_IPXSPX2_HDRSIZE);
while (bufCount-- > 2)
{
PBYTE pData;
ULONG dataLen;
NdisUnchainBufferAtBack(
pPkt,
&pFreeBuf);
// See if we free data associated with the buffer
if ((((PSPX_SEND_RESD)(pPkt->ProtocolReserved))->sr_State &
SPX_SENDPKT_FREEDATA) != 0)
{
NdisQueryBuffer(pFreeBuf, &pData, &dataLen);
CTEAssert(pData != NULL);
SpxFreeMemory(pData);
}
CTEAssert(pFreeBuf != NULL);
NdisFreeBuffer(pFreeBuf);
}
NdisReinitializePacket(pPkt);
// Initialize elements of the protocol reserved structure.
((PSPX_SEND_RESD)(pPkt->ProtocolReserved))->sr_Id = IDENTIFIER_SPX;
((PSPX_SEND_RESD)(pPkt->ProtocolReserved))->sr_State = SPX_SENDPKT_IDLE;
((PSPX_SEND_RESD)(pPkt->ProtocolReserved))->sr_Reserved1= NULL;
((PSPX_SEND_RESD)(pPkt->ProtocolReserved))->sr_Reserved2= NULL;
NdisChainBufferAtFront(
pPkt,
pBuf);
NdisChainBufferAtBack(
pPkt,
pIpxSpxBuf);
SpxFreeSendPacket(SpxDevice, pPkt);
return;
}
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