145 lines
2.2 KiB
C
145 lines
2.2 KiB
C
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/*++
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Copyright (c) 1997 Microsoft Corporation
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Module Name:
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D:\nt\private\ntos\tdi\rawwan\core\vc.c
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Abstract:
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Routines that manage NDIS VC objects.
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Revision History:
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Who When What
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-------- -------- ----------------------------------------------
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arvindm 05-05-97 Created
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Notes:
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--*/
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#include <precomp.h>
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#define _FILENUMBER ' CV'
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PRWAN_NDIS_VC
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RWanAllocateVc(
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IN PRWAN_NDIS_AF pAf,
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IN BOOLEAN IsOutgoing
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)
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/*++
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Routine Description:
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Allocate and initialize an NDIS VC endpoint on the specified
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Address Family. If it is an "outgoing" VC, we also request
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NDIS to allocate a handle for it.
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Arguments:
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pAf - Points to NDIS AF block
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IsOutgoing - This VC is for an outgoing call
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Return Value:
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Pointer to VC if successful, NULL otherwise.
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--*/
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{
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PRWAN_NDIS_VC pVc;
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NDIS_STATUS Status;
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RWAN_ALLOC_MEM(pVc, RWAN_NDIS_VC, sizeof(RWAN_NDIS_VC));
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if (pVc != NULL)
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{
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RWAN_ZERO_MEM(pVc, sizeof(RWAN_NDIS_VC));
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RWAN_SET_SIGNATURE(pVc, nvc);
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pVc->pNdisAf = pAf;
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pVc->MaxSendSize = 0; // Initialize.
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RWAN_INIT_LIST(&(pVc->NdisPartyList));
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if (IsOutgoing)
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{
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//
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// Request the Call manager and Miniport to create a VC.
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//
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Status = NdisCoCreateVc(
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pAf->pAdapter->NdisAdapterHandle,
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pAf->NdisAfHandle,
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(NDIS_HANDLE)pVc,
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&(pVc->NdisVcHandle)
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);
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if (Status == NDIS_STATUS_SUCCESS)
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{
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//
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// Add this VC to the list on the AF Block.
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//
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RWAN_ACQUIRE_AF_LOCK(pAf);
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RWAN_INSERT_TAIL_LIST(&(pAf->NdisVcList),
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&(pVc->VcLink));
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RWanReferenceAf(pAf); // New outgoing VC ref
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RWAN_RELEASE_AF_LOCK(pAf);
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}
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else
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{
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RWAN_FREE_MEM(pVc);
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pVc = NULL;
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}
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}
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else
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{
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//
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// Add this VC to the list on the AF Block.
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//
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RWAN_ACQUIRE_AF_LOCK(pAf);
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RWAN_INSERT_TAIL_LIST(&(pAf->NdisVcList),
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&(pVc->VcLink));
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RWanReferenceAf(pAf); // New incoming VC ref
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RWAN_RELEASE_AF_LOCK(pAf);
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}
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}
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return (pVc);
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}
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VOID
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RWanFreeVc(
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IN PRWAN_NDIS_VC pVc
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)
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/*++
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Routine Description:
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Free a VC structure.
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Arguments:
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pVc - Pointer to VC to be freed.
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Return Value:
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None
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--*/
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{
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RWAN_FREE_MEM(pVc);
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}
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