601 lines
15 KiB
C
601 lines
15 KiB
C
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/*++
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Copyright (c) 1999 Microsoft Corporation
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Module Name:
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pkt.c
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Abstract:
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ARP1394 ARP control packet management.
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Revision History:
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Who When What
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-------- -------- ----------------------------------------------
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josephj 07-01-99 Created
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Notes:
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--*/
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#include <precomp.h>
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//
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// File-specific debugging defaults.
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//
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#define TM_CURRENT TM_PKT
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//=========================================================================
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// L O C A L P R O T O T Y P E S
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//=========================================================================
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NDIS_STATUS
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arpAllocateControlPacketPool(
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PARP1394_INTERFACE pIF, // LOCKIN LOCKOUT
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UINT MaxBufferSize,
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PRM_STACK_RECORD pSR
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)
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/*++
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Routine Description:
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Allocate & initialize the packet pool used for allocating control packets.
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Control packets are used for ARP and MCAP. This routine MUST be called
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BEFORE the first call to arpAllocateControlPacket.
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Arguments:
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pIF - The interface in which to allocate the pool. Only one such pool
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is allocated per interface and it occupies a specific field of
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pIF.
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MaxBufferSize - Maximum data size of packets to be allocated using this
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pool. Attempts to allocate a packet
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(using arpAllocateControlPacket) with a size larger than
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MaxBufferSize will fail.
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Return Value:
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NDIS_STATUS_SUCCESS on success.
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Ndis error code on failure.
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--*/
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{
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NDIS_STATUS Status;
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NDIS_HANDLE PacketPool=NULL;
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NDIS_HANDLE BufferPool=NULL;
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ENTER("arpAllocateControlPacketPool", 0x71579254)
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RM_ASSERT_OBJLOCKED(&pIF->Hdr, pSR);
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ASSERT(pIF->arp.PacketPool == NULL);
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ASSERT(pIF->arp.BufferPool == NULL);
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ASSERT(pIF->arp.NumOutstandingPackets == 0);
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do
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{
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// Allocate the NDIS Packet Pool
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//
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NdisAllocatePacketPool(
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&Status,
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&PacketPool,
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ARP1394_MAX_PROTOCOL_PKTS,
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sizeof(struct PCCommon)
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);
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if (FAIL(Status))
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{
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PacketPool = NULL;
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break;
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}
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// Allocate the NDIS Buffer Pool
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//
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NdisAllocateBufferPool(
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&Status,
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&BufferPool,
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ARP1394_MAX_PROTOCOL_PKTS
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);
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if (FAIL(Status))
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{
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BufferPool = NULL;
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break;
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}
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//
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// We could allocate a lookaside list for the Protocol data, but we
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// choose to use NdisAllocateMemoryWithTag on demand instead. Protocol pkts
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// are not high-frequency things; plus we don't have support for lookaside
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// lists on win98 (although we could easily implement our own for
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// win98, so that's not really an excuse).
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//
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pIF->arp.MaxBufferSize = MaxBufferSize;
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// (DBG only) Add associations for the packet pool and buffer pool.
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// These associations must be removed before the interface is deallocated.
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//
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DBG_ADDASSOC(
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&pIF->Hdr, // pObject
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PacketPool, // Instance1
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NULL, // Instance2
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ARPASSOC_IF_PROTOPKTPOOL, // AssociationID
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" Proto Packet Pool 0x%p\n",// szFormat
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pSR
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);
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DBG_ADDASSOC(
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&pIF->Hdr, // pObject
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BufferPool, // Instance1
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NULL, // Instance2
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ARPASSOC_IF_PROTOBUFPOOL, // AssociationID
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" Proto Buffer Pool 0x%p\n",// szFormat
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pSR
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);
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pIF->arp.PacketPool = PacketPool;
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pIF->arp.BufferPool = BufferPool;
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PacketPool = NULL;
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BufferPool = NULL;
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} while (FALSE);
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if (FAIL(Status))
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{
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if (PacketPool != NULL)
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{
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NdisFreePacketPool(PacketPool);
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}
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if (BufferPool != NULL)
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{
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NdisFreeBufferPool(BufferPool);
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}
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}
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else
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{
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ASSERT(PacketPool == NULL && BufferPool == NULL);
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}
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return Status;
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}
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VOID
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arpFreeControlPacketPool(
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PARP1394_INTERFACE pIF, // LOCKIN LOCKOUT
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PRM_STACK_RECORD pSR
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)
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/*++
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Routine Description:
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Free the previously allocated control packet pool. MUST be called AFTER the last
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call to arpFreeControlPacket. See arpAllocateControlPacketPool for more details.
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Arguments:
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pIF - The interface in which to free the pool.
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--*/
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{
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NDIS_HANDLE PacketPool;
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NDIS_HANDLE BufferPool;
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ENTER("arpFreeControlPacketPool", 0x3c3acf47)
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// Make sure the IF is locked.
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//
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RM_ASSERT_OBJLOCKED(&pIF->Hdr, pSR);
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// Make sure that there are no outstanding allocated packets.
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//
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ASSERT(pIF->arp.NumOutstandingPackets == 0);
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PacketPool = pIF->arp.PacketPool;
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BufferPool = pIF->arp.BufferPool;
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pIF->arp.PacketPool = NULL;
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pIF->arp.BufferPool = NULL;
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// (DBG only) Remove associations for the control and packet pools.
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//
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DBG_DELASSOC(
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&pIF->Hdr, // pObject
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PacketPool, // Instance1
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NULL, // Instance2
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ARPASSOC_IF_PROTOPKTPOOL, // AssociationID
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pSR
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);
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DBG_DELASSOC(
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&pIF->Hdr, // pObject
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BufferPool, // Instance1
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NULL, // Instance2
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ARPASSOC_IF_PROTOBUFPOOL, // AssociationID
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pSR
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);
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// Free the buffer and packet pools
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//
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NdisFreeBufferPool(BufferPool);
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NdisFreePacketPool(PacketPool);
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}
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NDIS_STATUS
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arpAllocateControlPacket(
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IN PARP1394_INTERFACE pIF,
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IN UINT cbBufferSize,
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IN UINT PktFlags,
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OUT PNDIS_PACKET *ppNdisPacket,
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OUT PVOID *ppvData,
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PRM_STACK_RECORD pSR
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)
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/*++
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Routine Description:
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Allocate a control packet from the interfaces control packet pool. Also
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allocate and chain a SINGLE buffer of size cbBufferSize and return a pointer to
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this buffer in *ppvData.
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NOTE1: The packet and associated buffer MUST be freed
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by a subsequent call to arpFreeControlPacket -- do not free the packet & buffer
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by directly calling ndis apis.
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NOTE2: cbBufferSize must be <= the max-buffer-size specified when
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creating the pool (see arpAllocateControlPacketPool for details).
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Arguments:
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pIF - Interface whose control packet pool to use.
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cbBufferSize - size of the control packet.
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ppNdisPacket - Location to set to point to the allocated pkt.
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ppvData - Location to set to point to the packet data (single buffer).
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Return Value:
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NDIS_STATUS_SUCCESS on success.
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NDIS_STATUS_RESOURCES if buffers or pkts are currently not available.
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Other ndis error on other kinds of failures.
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--*/
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{
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NDIS_STATUS Status;
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PNDIS_PACKET pNdisPacket = NULL;
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PNDIS_BUFFER pNdisBuffer = NULL;
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PVOID pvData = NULL;
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ENTER("arpAllocateControlPacket", 0x8ccce6ea)
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//
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// NOTE: we don't care if pIF is locked or not.
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//
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pNdisPacket = NULL;
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pvData = NULL;
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do
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{
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// Allocate space for the packet data.
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// TODO: here is where we could use a lookaside list instead
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// of NdisAllocateMemoryWithTag.
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//
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{
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if (cbBufferSize > pIF->arp.MaxBufferSize)
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{
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ASSERT(FALSE);
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Status = NDIS_STATUS_RESOURCES;
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break;
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}
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NdisAllocateMemoryWithTag(
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&pvData,
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cbBufferSize,
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MTAG_PKT
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);
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if (pvData == NULL)
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{
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Status = NDIS_STATUS_RESOURCES;
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break;
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}
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}
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// Allocate a buffer.
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//
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NdisAllocateBuffer(
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&Status,
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&pNdisBuffer,
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pIF->arp.BufferPool,
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pvData,
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cbBufferSize
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);
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if (FAIL(Status))
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{
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pNdisBuffer = NULL;
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break;
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}
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// Allocate a packet
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//
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NdisAllocatePacket(
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&Status,
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&pNdisPacket,
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pIF->arp.PacketPool
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);
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if (FAIL(Status))
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{
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pNdisPacket = NULL;
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break;
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}
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// Identify the packet as belonging to us (ARP).
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//
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{
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struct PacketContext *PC;
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PC = (struct PacketContext *)pNdisPacket->ProtocolReserved;
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PC->pc_common.pc_owner = PACKET_OWNER_LINK;
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PC->pc_common.pc_flags = (UCHAR)PktFlags; // ARP1394_PACKET_FLAGS_CONTROL;
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}
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// Link the packet and buffer.
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//
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NdisChainBufferAtFront(pNdisPacket, pNdisBuffer);
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InterlockedIncrement(&pIF->arp.NumOutstandingPackets);
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*ppNdisPacket = pNdisPacket;
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*ppvData = pvData;
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pNdisPacket = NULL;
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pNdisBuffer = NULL;
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pvData = NULL;
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} while (FALSE);
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if (FAIL(Status))
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{
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if (pNdisPacket != NULL)
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{
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NdisFreePacket(pNdisPacket);
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}
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if (pNdisBuffer != NULL)
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{
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NdisFreeBuffer(pNdisBuffer);
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}
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if (pvData != NULL)
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{
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NdisFreeMemory(pvData, 0, 0);
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}
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}
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else
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{
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ASSERT(pNdisPacket == NULL
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&& pNdisBuffer == NULL
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&& pvData == NULL);
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}
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return Status;
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}
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VOID
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arpFreeControlPacket(
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PARP1394_INTERFACE pIF,
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PNDIS_PACKET pNdisPacket,
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PRM_STACK_RECORD pSR
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)
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/*++
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Routine Description:
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Free a packet previously allocated using arpAllocateControlPacket.
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Arguments:
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pIF - Interface whose control packet pool to use.
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--*/
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{
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PNDIS_BUFFER pNdisBuffer = NULL;
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PVOID pvData = NULL;
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ENTER("arpFreeControlPacket", 0x01e7fbc7)
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// (DBG only) Verify that this packet belongs to us.
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//
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#if DBG
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{
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struct PacketContext *PC;
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PC = (struct PacketContext *)pNdisPacket->ProtocolReserved;
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ASSERT(PC->pc_common.pc_owner == PACKET_OWNER_LINK);
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}
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#endif // DBG
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// Decrement the allocated packet count.
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//
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{
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LONG Count;
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Count = InterlockedDecrement(&pIF->arp.NumOutstandingPackets);
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ASSERT(Count >= 0);
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}
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// Extract the buffer and data
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//
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{
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UINT TotalLength;
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UINT BufferLength;
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NdisQueryPacket(
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pNdisPacket,
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NULL,
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NULL,
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&pNdisBuffer,
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&TotalLength
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);
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if (TotalLength > 0)
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{
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NdisQueryBuffer(
|
||
|
|
pNdisBuffer,
|
||
|
|
&pvData,
|
||
|
|
&BufferLength
|
||
|
|
);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
BufferLength = 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
// There should only be a single buffer!
|
||
|
|
//
|
||
|
|
ASSERT(TotalLength!=0 && TotalLength == BufferLength);
|
||
|
|
}
|
||
|
|
|
||
|
|
// Free the data
|
||
|
|
//
|
||
|
|
if (pvData != NULL)
|
||
|
|
{
|
||
|
|
NdisFreeMemory(pvData, 0, 0);
|
||
|
|
}
|
||
|
|
// Free the buffer
|
||
|
|
//
|
||
|
|
if (pNdisBuffer != NULL)
|
||
|
|
{
|
||
|
|
NdisFreeBuffer(pNdisBuffer);
|
||
|
|
}
|
||
|
|
// Free the packet
|
||
|
|
//
|
||
|
|
if (pNdisPacket != NULL)
|
||
|
|
{
|
||
|
|
NdisFreePacket(pNdisPacket);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
NDIS_STATUS
|
||
|
|
arpAllocateEthernetPools(
|
||
|
|
IN PARP1394_INTERFACE pIF,
|
||
|
|
IN PRM_STACK_RECORD pSR
|
||
|
|
)
|
||
|
|
{
|
||
|
|
NDIS_STATUS Status;
|
||
|
|
NDIS_HANDLE PacketPool=NULL;
|
||
|
|
NDIS_HANDLE BufferPool=NULL;
|
||
|
|
ENTER("arpAllocateEthernetPools", 0x9dc1d759)
|
||
|
|
|
||
|
|
RM_ASSERT_OBJLOCKED(&pIF->Hdr, pSR);
|
||
|
|
ASSERT(pIF->ethernet.PacketPool == NULL);
|
||
|
|
ASSERT(pIF->ethernet.BufferPool == NULL);
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
// Allocate the NDIS Packet Pool
|
||
|
|
//
|
||
|
|
NdisAllocatePacketPool(
|
||
|
|
&Status,
|
||
|
|
&PacketPool,
|
||
|
|
ARP1394_MAX_ETHERNET_PKTS,
|
||
|
|
sizeof(struct PCCommon)
|
||
|
|
);
|
||
|
|
|
||
|
|
if (FAIL(Status))
|
||
|
|
{
|
||
|
|
PacketPool = NULL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Allocate the NDIS Buffer Pool
|
||
|
|
//
|
||
|
|
NdisAllocateBufferPool(
|
||
|
|
&Status,
|
||
|
|
&BufferPool,
|
||
|
|
2*ARP1394_MAX_ETHERNET_PKTS // two buffers per packet.
|
||
|
|
);
|
||
|
|
|
||
|
|
if (FAIL(Status))
|
||
|
|
{
|
||
|
|
BufferPool = NULL;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
// (DBG only) Add associations for the ethernet packet pool and buffer pool.
|
||
|
|
// These associations must be removed before the interface is deallocated.
|
||
|
|
//
|
||
|
|
DBG_ADDASSOC(
|
||
|
|
&pIF->Hdr, // pObject
|
||
|
|
PacketPool, // Instance1
|
||
|
|
NULL, // Instance2
|
||
|
|
ARPASSOC_IF_ETHPKTPOOL, // AssociationID
|
||
|
|
" Eth Packet Pool 0x%p\n",// szFormat
|
||
|
|
pSR
|
||
|
|
);
|
||
|
|
DBG_ADDASSOC(
|
||
|
|
&pIF->Hdr, // pObject
|
||
|
|
BufferPool, // Instance1
|
||
|
|
NULL, // Instance2
|
||
|
|
ARPASSOC_IF_ETHBUFPOOL, // AssociationID
|
||
|
|
" Eth Buffer Pool 0x%p\n",// szFormat
|
||
|
|
pSR
|
||
|
|
);
|
||
|
|
|
||
|
|
pIF->ethernet.PacketPool = PacketPool;
|
||
|
|
pIF->ethernet.BufferPool = BufferPool;
|
||
|
|
PacketPool = NULL;
|
||
|
|
BufferPool = NULL;
|
||
|
|
|
||
|
|
} while (FALSE);
|
||
|
|
|
||
|
|
if (FAIL(Status))
|
||
|
|
{
|
||
|
|
if (PacketPool != NULL)
|
||
|
|
{
|
||
|
|
NdisFreePacketPool(PacketPool);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (BufferPool != NULL)
|
||
|
|
{
|
||
|
|
NdisFreeBufferPool(BufferPool);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
ASSERT(PacketPool == NULL && BufferPool == NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
return Status;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
arpFreeEthernetPools(
|
||
|
|
IN PARP1394_INTERFACE pIF,
|
||
|
|
IN PRM_STACK_RECORD pSR
|
||
|
|
)
|
||
|
|
{
|
||
|
|
NDIS_HANDLE PacketPool;
|
||
|
|
NDIS_HANDLE BufferPool;
|
||
|
|
ENTER("arpFreeEthernetPools", 0x3e780760)
|
||
|
|
|
||
|
|
// Make sure the IF is locked.
|
||
|
|
//
|
||
|
|
RM_ASSERT_OBJLOCKED(&pIF->Hdr, pSR);
|
||
|
|
|
||
|
|
PacketPool = pIF->ethernet.PacketPool;
|
||
|
|
BufferPool = pIF->ethernet.BufferPool;
|
||
|
|
pIF->ethernet.PacketPool = NULL;
|
||
|
|
pIF->ethernet.BufferPool = NULL;
|
||
|
|
|
||
|
|
// (DBG only) Remove associations for the control and packet pools.
|
||
|
|
//
|
||
|
|
DBG_DELASSOC(
|
||
|
|
&pIF->Hdr, // pObject
|
||
|
|
PacketPool, // Instance1
|
||
|
|
NULL, // Instance2
|
||
|
|
ARPASSOC_IF_ETHPKTPOOL, // AssociationID
|
||
|
|
pSR
|
||
|
|
);
|
||
|
|
DBG_DELASSOC(
|
||
|
|
&pIF->Hdr, // pObject
|
||
|
|
BufferPool, // Instance1
|
||
|
|
NULL, // Instance2
|
||
|
|
ARPASSOC_IF_ETHBUFPOOL, // AssociationID
|
||
|
|
pSR
|
||
|
|
);
|
||
|
|
|
||
|
|
// Free the buffer and packet pools
|
||
|
|
//
|
||
|
|
NdisFreeBufferPool(BufferPool);
|
||
|
|
NdisFreePacketPool(PacketPool);
|
||
|
|
}
|