1368 lines
43 KiB
C
1368 lines
43 KiB
C
/*++
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Copyright (c) 1989-1993 Microsoft Corporation
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Module Name:
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spxmem.c
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Abstract:
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This module contains code which implements the memory allocation wrappers.
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Author:
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Nikhil Kamkolkar (nikhilk) 11-November-1993
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Jameel Hyder (jameelh) Initial Version
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Environment:
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Kernel mode
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Revision History:
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--*/
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#include "precomp.h"
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#pragma hdrstop
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#ifdef ALLOC_PRAGMA
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#pragma alloc_text( INIT, SpxInitMemorySystem)
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#pragma alloc_text( PAGE, SpxDeInitMemorySystem)
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#endif
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#if !defined SPX_OWN_PACKETS
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typedef struct NdisResEntry {
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struct NdisResEntry *nre_next;
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NDIS_HANDLE nre_handle;
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uchar *nre_buffer;
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} NdisResEntry;
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NdisResEntry *SendPacketPoolList = NULL;
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SLIST_HEADER SendPacketList;
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NdisResEntry *RecvPacketPoolList = NULL;
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SLIST_HEADER RecvPacketList;
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DEFINE_LOCK_STRUCTURE(SendHeaderLock);
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DEFINE_LOCK_STRUCTURE(RecvHeaderLock);
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uint CurrentSendPacketCount = 0;
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uint CurrentRecvPacketCount = 0;
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uint MaxPacketCount = 0x0ffffff;
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#define PACKET_GROW_COUNT 16
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#endif // SPX_OWN_PACKETS
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// Define module number for event logging entries
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#define FILENUM SPXMEM
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// Globals for this module
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// Some block sizes (like NDISSEND/NDISRECV are filled in after binding with IPX)
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USHORT spxBlkSize[NUM_BLKIDS] = // Size of each block
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{
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sizeof(BLK_HDR)+sizeof(TIMERLIST), // BLKID_TIMERLIST
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0, // BLKID_NDISSEND
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0 // BLKID_NDISRECV
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};
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USHORT spxChunkSize[NUM_BLKIDS] = // Size of each Chunk
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{
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512-BC_OVERHEAD, // BLKID_TIMERLIST
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512-BC_OVERHEAD, // BLKID_NDISSEND
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512-BC_OVERHEAD // BLKID_NDISRECV
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};
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// Filled in after binding with IPX
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// Reference for below.
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// ( 512-BC_OVERHEAD-sizeof(BLK_CHUNK))/
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// (sizeof(BLK_HDR)+sizeof(TIMERLIST)), // BLKID_TIMERLIST
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USHORT spxNumBlks[NUM_BLKIDS] = // Number of blocks per chunk
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{
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( 512-BC_OVERHEAD-sizeof(BLK_CHUNK))/
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(sizeof(BLK_HDR)+sizeof(TIMERLIST)), // BLKID_TIMERLIST
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0, // BLKID_NDISSEND
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0 // BLKID_NDISRECV
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};
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CTELock spxBPLock[NUM_BLKIDS] = { 0 };
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PBLK_CHUNK spxBPHead[NUM_BLKIDS] = { 0 };
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NTSTATUS
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SpxInitMemorySystem(
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IN PDEVICE pSpxDevice
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)
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/*++
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Routine Description:
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!!! MUST BE CALLED AFTER BINDING TO IPX!!!
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Arguments:
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Return Value:
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--*/
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{
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LONG i;
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NDIS_STATUS ndisStatus;
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// Try to allocate the ndis buffer pool.
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NdisAllocateBufferPool(
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&ndisStatus,
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&pSpxDevice->dev_NdisBufferPoolHandle,
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20);
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if (ndisStatus != NDIS_STATUS_SUCCESS)
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return(STATUS_INSUFFICIENT_RESOURCES);
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for (i = 0; i < NUM_BLKIDS; i++)
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CTEInitLock (&spxBPLock[i]);
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// Set the sizes in the block id info arrays.
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for (i = 0; i < NUM_BLKIDS; i++)
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{
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switch (i)
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{
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case BLKID_NDISSEND:
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#ifdef SPX_OWN_PACKETS
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spxBlkSize[i] = sizeof(BLK_HDR) +
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sizeof(SPX_SEND_RESD) +
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NDIS_PACKET_SIZE +
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IpxMacHdrNeeded +
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MIN_IPXSPX2_HDRSIZE;
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#else
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spxBlkSize[i] = sizeof(PNDIS_PACKET);
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#endif
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//
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// Round the block size up to the next 8-byte boundary.
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//
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spxBlkSize[i] = QWORDSIZEBLOCK(spxBlkSize[i]);
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// Set number blocks
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spxNumBlks[i] = ( 512-BC_OVERHEAD-sizeof(BLK_CHUNK))/spxBlkSize[i];
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break;
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case BLKID_NDISRECV:
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#ifdef SPX_OWN_PACKETS
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spxBlkSize[i] = sizeof(BLK_HDR) +
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sizeof(SPX_RECV_RESD) +
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NDIS_PACKET_SIZE;
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#else
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spxBlkSize[i] = sizeof(PNDIS_PACKET);
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#endif
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//
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// Round the block size up to the next 8-byte boundary.
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//
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spxBlkSize[i] = QWORDSIZEBLOCK(spxBlkSize[i]);
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// Set number blocks
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spxNumBlks[i] = ( 512-BC_OVERHEAD-sizeof(BLK_CHUNK))/spxBlkSize[i];
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break;
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default:
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break;
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}
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}
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SpxTimerScheduleEvent((TIMER_ROUTINE)spxBPAgePool,
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BLOCK_POOL_TIMER,
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NULL);
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return STATUS_SUCCESS;
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}
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VOID
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SpxDeInitMemorySystem(
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IN PDEVICE pSpxDevice
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)
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/*++
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Routine Description:
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Arguments:
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Return Value:
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--*/
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{
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LONG i, j, NumBlksPerChunk;
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PBLK_CHUNK pChunk, pFree;
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for (i = 0; i < NUM_BLKIDS; i++)
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{
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NumBlksPerChunk = spxNumBlks[i];
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for (pChunk = spxBPHead[i];
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pChunk != NULL; )
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{
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DBGPRINT(RESOURCES, ERR,
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("SpxInitMemorySystem: Freeing %lx\n", pChunk));
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CTEAssert (pChunk->bc_NumFrees == NumBlksPerChunk);
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if ((pChunk->bc_BlkId == BLKID_NDISSEND) ||
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(pChunk->bc_BlkId == BLKID_NDISRECV))
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{
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PBLK_HDR pBlkHdr;
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// We need to free the Ndis stuff for these guys
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for (j = 0, pBlkHdr = pChunk->bc_FreeHead;
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j < NumBlksPerChunk;
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j++, pBlkHdr = pBlkHdr->bh_Next)
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{
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PNDIS_PACKET pNdisPkt;
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PNDIS_BUFFER pNdisBuffer;
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#ifdef SPX_OWN_PACKETS
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// Only need to free the ndis buffer.
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pNdisPkt = (PNDIS_PACKET)((PBYTE)pBlkHdr + sizeof(BLK_HDR));
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if (pChunk->bc_BlkId == BLKID_NDISSEND)
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{
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NdisUnchainBufferAtFront(pNdisPkt, &pNdisBuffer);
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if (pNdisBuffer == NULL)
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{
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// Something is terribly awry.
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KeBugCheck(0);
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}
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NdisFreeBuffer(pNdisBuffer);
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//
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// Free the second MDL also
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//
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NdisUnchainBufferAtFront(pNdisPkt, &pNdisBuffer);
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if (pNdisBuffer == NULL)
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{
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// Something is terribly awry.
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KeBugCheck(0);
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}
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NdisFreeBuffer(pNdisBuffer);
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}
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#else
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/* // Need to free both the packet and the buffer.
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pNdisPkt = (PNDIS_PACKET *)((PBYTE)pBlkHdr + sizeof(BLK_HDR));
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if (pChunk->bc_BlkId == BLKID_NDISSEND)
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{
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NdisUnchainBufferAtFront(*pNdisPkt, &pNdisBuffer);
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if (pNdisBuffer == NULL)
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{
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// Something is terribly awry.
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KeBugCheck(0);
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}
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NdisFreeBuffer(pNdisBuffer);
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}
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NdisFreePacket(*pNdisPkt);
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*/
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#endif
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}
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}
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pFree = pChunk;
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pChunk = pChunk->bc_Next;
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#ifndef SPX_OWN_PACKETS
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/*
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// Free the ndis packet pool in chunk
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NdisFreePacketPool((NDIS_HANDLE)pFree->bc_ChunkCtx); */
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#endif
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SpxFreeMemory(pFree);
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}
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}
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// Free up the ndis buffer pool
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NdisFreeBufferPool(
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pSpxDevice->dev_NdisBufferPoolHandle);
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return;
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}
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PVOID
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SpxAllocMem(
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#ifdef TRACK_MEMORY_USAGE
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IN ULONG Size,
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IN ULONG FileLine
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#else
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IN ULONG Size
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#endif // TRACK_MEMORY_USAGE
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)
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/*++
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Routine Description:
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Allocate a block of non-paged memory. This is just a wrapper over ExAllocPool.
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Allocation failures are error-logged. We always allocate a ULONG more than
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the specified size to accomodate the size. This is used by SpxFreeMemory
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to update the statistics.
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Arguments:
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Return Value:
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--*/
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{
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PBYTE pBuf;
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BOOLEAN zeroed;
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// round up the size so that we can put a signature at the end
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// that is on a LARGE_INTEGER boundary
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zeroed = ((Size & ZEROED_MEMORY_TAG) == ZEROED_MEMORY_TAG);
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Size = QWORDSIZEBLOCK(Size & ~ZEROED_MEMORY_TAG);
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// Do the actual memory allocation. Allocate eight extra bytes so
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// that we can store the size of the allocation for the free routine
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// and still keep the buffer quadword aligned.
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if ((pBuf = ExAllocatePoolWithTag(NonPagedPool, Size + sizeof(LARGE_INTEGER)
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#if DBG
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+ sizeof(ULONG)
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#endif
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,SPX_TAG)) == NULL)
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{
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DBGPRINT(RESOURCES, FATAL,
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("SpxAllocMemory: failed - size %lx\n", Size));
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TMPLOGERR();
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return NULL;
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}
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// Save the size of this block in the four extra bytes we allocated.
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*((PULONG)pBuf) = (Size + sizeof(LARGE_INTEGER));
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// Return a pointer to the memory after the size longword.
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pBuf += sizeof(LARGE_INTEGER);
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#if DBG
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*((PULONG)(pBuf+Size)) = SPX_MEMORY_SIGNATURE;
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DBGPRINT(RESOURCES, INFO,
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("SpxAllocMemory: %p Allocated %lx bytes @%p\n",
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_ReturnAddress(), Size, pBuf));
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#endif
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SpxTrackMemoryUsage((PVOID)(pBuf - sizeof(LARGE_INTEGER)), TRUE, FileLine);
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if (zeroed)
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RtlZeroMemory(pBuf, Size);
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return (pBuf);
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}
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VOID
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SpxFreeMemory(
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IN PVOID pBuf
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)
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/*++
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Routine Description:
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Free the block of memory allocated via SpxAllocMemory. This is
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a wrapper around ExFreePool.
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Arguments:
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Return Value:
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--*/
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{
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PULONG pRealBuffer;
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// Get a pointer to the block allocated by ExAllocatePool --
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// we allocate a LARGE_INTEGER at the front.
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pRealBuffer = ((PULONG)pBuf - 2);
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SpxTrackMemoryUsage(pRealBuffer, FALSE, 0);
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#if DBG
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// Check the signature at the end
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if (*(PULONG)((PCHAR)pRealBuffer + *(PULONG)pRealBuffer)
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!= SPX_MEMORY_SIGNATURE)
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{
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DBGPRINT(RESOURCES, FATAL,
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("SpxFreeMemory: Memory overrun on block %lx\n", pRealBuffer));
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DBGBRK(FATAL);
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}
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*(PULONG)((PCHAR)pRealBuffer + *(PULONG)pRealBuffer) = 0;
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#endif
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#if DBG
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*pRealBuffer = 0;
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#endif
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// Free the pool and return.
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ExFreePool(pRealBuffer);
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}
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#ifdef TRACK_MEMORY_USAGE
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#define MAX_PTR_COUNT 4*1024
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#define MAX_MEM_USERS 512
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CTELock spxMemTrackLock = {0};
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CTELockHandle lockHandle = {0};
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struct
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{
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PVOID mem_Ptr;
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ULONG mem_FileLine;
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} spxMemPtrs[MAX_PTR_COUNT] = {0};
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struct
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{
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ULONG mem_FL;
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ULONG mem_Count;
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} spxMemUsage[MAX_MEM_USERS] = {0};
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VOID
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SpxTrackMemoryUsage(
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IN PVOID pMem,
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IN BOOLEAN Alloc,
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IN ULONG FileLine
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)
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/*++
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Routine Description:
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Keep track of memory usage by storing and clearing away pointers as and
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when they are allocated or freed. This helps in keeping track of memory
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leaks.
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Arguments:
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Return Value:
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--*/
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{
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static int i = 0;
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int j, k;
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CTEGetLock (&spxMemTrackLock, &lockHandle);
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if (Alloc)
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{
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for (j = 0; j < MAX_PTR_COUNT; i++, j++)
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{
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i = i & (MAX_PTR_COUNT-1);
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if (spxMemPtrs[i].mem_Ptr == NULL)
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{
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spxMemPtrs[i].mem_Ptr = pMem;
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spxMemPtrs[i++].mem_FileLine = FileLine;
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break;
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}
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}
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for (k = 0; k < MAX_MEM_USERS; k++)
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{
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if (spxMemUsage[k].mem_FL == FileLine)
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{
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spxMemUsage[k].mem_Count ++;
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break;
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}
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}
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if (k == MAX_MEM_USERS)
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{
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for (k = 0; k < MAX_MEM_USERS; k++)
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{
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if (spxMemUsage[k].mem_FL == 0)
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{
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spxMemUsage[k].mem_FL = FileLine;
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spxMemUsage[k].mem_Count = 1;
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break;
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}
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}
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}
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if (k == MAX_MEM_USERS)
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{
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DBGPRINT(RESOURCES, ERR,
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("SpxTrackMemoryUsage: Out of space on spxMemUsage !!!\n"));
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DBGBRK(FATAL);
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}
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}
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else
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{
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for (j = 0, k = i; j < MAX_PTR_COUNT; j++, k--)
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{
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k = k & (MAX_PTR_COUNT-1);
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if (spxMemPtrs[k].mem_Ptr == pMem)
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{
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spxMemPtrs[k].mem_Ptr = 0;
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spxMemPtrs[k].mem_FileLine = 0;
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break;
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}
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}
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}
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CTEFreeLock (&spxMemTrackLock, lockHandle);
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if (j == MAX_PTR_COUNT)
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{
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DBGPRINT(RESOURCES, ERR,
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("SpxTrackMemoryUsage: %s\n", Alloc ? "Table Full" : "Can't find"));
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DBGBRK(FATAL);
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}
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}
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#endif // TRACK_MEMORY_USAGE
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PVOID
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SpxBPAllocBlock(
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IN BLKID BlockId
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)
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/*++
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Routine Description:
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Alloc a block of memory from the block pool package. This is written to speed up
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operations where a lot of small fixed size allocations/frees happen. Going to
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ExAllocPool() in these cases is expensive.
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Arguments:
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Return Value:
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--*/
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{
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PBLK_HDR pBlk = NULL;
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PBLK_CHUNK pChunk, *ppChunkHead;
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USHORT BlkSize;
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CTELockHandle lockHandle;
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PSPX_SEND_RESD pSendResd;
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PSPX_RECV_RESD pRecvResd;
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PNDIS_PACKET pNdisPkt;
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PNDIS_BUFFER pNdisBuffer;
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PNDIS_BUFFER pNdisIpxSpxBuffer;
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CTEAssert (BlockId < NUM_BLKIDS);
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if (BlockId < NUM_BLKIDS)
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{
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BlkSize = spxBlkSize[BlockId];
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ppChunkHead = &spxBPHead[BlockId];
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|
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CTEGetLock(&spxBPLock[BlockId], &lockHandle);
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for (pChunk = *ppChunkHead;
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pChunk != NULL;
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pChunk = pChunk->bc_Next)
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{
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CTEAssert(pChunk->bc_BlkId == BlockId);
|
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if (pChunk->bc_NumFrees > 0)
|
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{
|
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DBGPRINT(SYSTEM, INFO,
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("SpxBPAllocBlock: Found space in Chunk %lx\n", pChunk));
|
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#ifdef PROFILING
|
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InterlockedIncrement( &SpxStatistics.stat_NumBPHits);
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#endif
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break;
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}
|
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}
|
|
|
|
if (pChunk == NULL)
|
|
{
|
|
DBGPRINT(SYSTEM, INFO,
|
|
("SpxBPAllocBlock: Allocating a new chunk for Id %d\n", BlockId));
|
|
|
|
#ifdef PROFILING
|
|
InterlockedIncrement( &SpxStatistics.stat_NumBPMisses);
|
|
#endif
|
|
pChunk = SpxAllocateMemory(spxChunkSize[BlockId]);
|
|
if (pChunk != NULL)
|
|
{
|
|
LONG i, j;
|
|
PBLK_HDR pBlkHdr;
|
|
USHORT NumBlksPerChunk;
|
|
|
|
NumBlksPerChunk = spxNumBlks[BlockId];
|
|
pChunk->bc_NumFrees = NumBlksPerChunk;
|
|
pChunk->bc_BlkId = BlockId;
|
|
pChunk->bc_FreeHead = (PBLK_HDR)((PBYTE)pChunk + sizeof(BLK_CHUNK));
|
|
|
|
DBGPRINT(SYSTEM, INFO,
|
|
("SpxBPAllocBlock: Initializing chunk %lx\n", pChunk));
|
|
|
|
// Initialize the blocks in the chunk
|
|
for (i = 0, pBlkHdr = pChunk->bc_FreeHead;
|
|
i < NumBlksPerChunk;
|
|
i++, pBlkHdr = pBlkHdr->bh_Next)
|
|
{
|
|
NDIS_STATUS ndisStatus;
|
|
|
|
pBlkHdr->bh_Next = (PBLK_HDR)((PBYTE)pBlkHdr + BlkSize);
|
|
if (BlockId == BLKID_NDISSEND)
|
|
{
|
|
PBYTE pHdrMem;
|
|
|
|
#ifdef SPX_OWN_PACKETS
|
|
// Point to the ndis packet,initialize it.
|
|
pNdisPkt = (PNDIS_PACKET)((PBYTE)pBlkHdr + sizeof(BLK_HDR));
|
|
NdisReinitializePacket(pNdisPkt);
|
|
|
|
// Allocate a ndis buffer descriptor describing hdr memory
|
|
// and queue it in.
|
|
pHdrMem = (PBYTE)pNdisPkt +
|
|
NDIS_PACKET_SIZE +
|
|
sizeof(SPX_SEND_RESD);
|
|
|
|
NdisAllocateBuffer(
|
|
&ndisStatus,
|
|
&pNdisBuffer,
|
|
SpxDevice->dev_NdisBufferPoolHandle,
|
|
pHdrMem,
|
|
IpxMacHdrNeeded);
|
|
|
|
if (ndisStatus != NDIS_STATUS_SUCCESS)
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Link the buffer descriptor into the packet descriptor
|
|
NdisChainBufferAtBack(
|
|
pNdisPkt,
|
|
pNdisBuffer);
|
|
|
|
|
|
NdisAllocateBuffer(
|
|
&ndisStatus,
|
|
&pNdisIpxSpxBuffer,
|
|
SpxDevice->dev_NdisBufferPoolHandle,
|
|
pHdrMem + IpxMacHdrNeeded,
|
|
MIN_IPXSPX2_HDRSIZE);
|
|
|
|
if (ndisStatus != NDIS_STATUS_SUCCESS)
|
|
{
|
|
break;
|
|
}
|
|
|
|
// Link the buffer descriptor into the packet descriptor
|
|
NdisChainBufferAtBack(
|
|
pNdisPkt,
|
|
pNdisIpxSpxBuffer);
|
|
|
|
|
|
|
|
pSendResd = (PSPX_SEND_RESD)pNdisPkt->ProtocolReserved;
|
|
|
|
//#else
|
|
// Allocate a ndis packet pool for this chunk
|
|
// NdisAllocatePacketPool();
|
|
// etc.
|
|
|
|
|
|
|
|
// Initialize elements of the protocol reserved structure.
|
|
pSendResd->sr_Id = IDENTIFIER_SPX;
|
|
pSendResd->sr_Reserved1 = NULL;
|
|
pSendResd->sr_Reserved2 = NULL;
|
|
pSendResd->sr_State = SPX_SENDPKT_IDLE;
|
|
#endif
|
|
}
|
|
else if (BlockId == BLKID_NDISRECV)
|
|
{
|
|
#ifdef SPX_OWN_PACKETS
|
|
// Point to the ndis packet,initialize it.
|
|
pNdisPkt = (PNDIS_PACKET)((PBYTE)pBlkHdr + sizeof(BLK_HDR));
|
|
NdisReinitializePacket(pNdisPkt);
|
|
|
|
pRecvResd = (PSPX_RECV_RESD)pNdisPkt->ProtocolReserved;
|
|
|
|
//#else
|
|
// Allocate a ndis packet pool for this chunk
|
|
// NdisAllocatePacketPool();
|
|
// etc.
|
|
|
|
|
|
// Initialize elements of the protocol reserved structure.
|
|
pRecvResd->rr_Id = IDENTIFIER_SPX;
|
|
pRecvResd->rr_State = SPX_RECVPKT_IDLE;
|
|
#endif
|
|
}
|
|
}
|
|
|
|
if (i != NumBlksPerChunk)
|
|
{
|
|
// This has to be a failure from Ndis for send blocks!!!
|
|
// Undo a bunch of stuff
|
|
CTEAssert (BlockId == BLKID_NDISSEND);
|
|
pBlkHdr = pChunk->bc_FreeHead;
|
|
for (j = 0, pBlkHdr = pChunk->bc_FreeHead;
|
|
j < i; j++, pBlkHdr = pBlkHdr->bh_Next)
|
|
{
|
|
NdisUnchainBufferAtFront(
|
|
(PNDIS_PACKET)((PBYTE)pBlkHdr + sizeof(BLK_HDR)),
|
|
&pNdisBuffer);
|
|
|
|
CTEAssert(pNdisBuffer != NULL);
|
|
NdisFreeBuffer(pNdisBuffer);
|
|
|
|
NdisUnchainBufferAtFront(
|
|
(PNDIS_PACKET)((PBYTE)pBlkHdr + sizeof(BLK_HDR)),
|
|
&pNdisIpxSpxBuffer);
|
|
|
|
if (pNdisIpxSpxBuffer)
|
|
{
|
|
NdisFreeBuffer(pNdisIpxSpxBuffer);
|
|
}
|
|
}
|
|
|
|
SpxFreeMemory(pChunk);
|
|
pChunk = NULL;
|
|
}
|
|
else
|
|
{
|
|
// Successfully initialized the chunk, link it in
|
|
pChunk->bc_Next = *ppChunkHead;
|
|
*ppChunkHead = pChunk;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (pChunk != NULL)
|
|
{
|
|
CTEAssert(pChunk->bc_BlkId == BlockId);
|
|
DBGPRINT(RESOURCES, INFO,
|
|
("SpxBPAllocBlock: Allocating a block out of chunk %lx(%d) for Id %d\n",
|
|
pChunk, pChunk->bc_NumFrees, BlockId));
|
|
|
|
pChunk->bc_NumFrees --;
|
|
pChunk->bc_Age = 0; // Reset age
|
|
pBlk = pChunk->bc_FreeHead;
|
|
pChunk->bc_FreeHead = pBlk->bh_Next;
|
|
pBlk->bh_pChunk = pChunk;
|
|
|
|
// Skip the block header!
|
|
pBlk++;
|
|
}
|
|
|
|
CTEFreeLock(&spxBPLock[BlockId], lockHandle);
|
|
}
|
|
|
|
return pBlk;
|
|
}
|
|
|
|
|
|
|
|
VOID
|
|
SpxBPFreeBlock(
|
|
IN PVOID pBlock,
|
|
IN BLKID BlockId
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Return a block to its owning chunk.
|
|
|
|
Arguments:
|
|
|
|
|
|
Return Value:
|
|
|
|
|
|
--*/
|
|
{
|
|
PBLK_CHUNK pChunk;
|
|
PBLK_HDR pBlkHdr = (PBLK_HDR)((PCHAR)pBlock - sizeof(BLK_HDR));
|
|
CTELockHandle lockHandle;
|
|
|
|
CTEGetLock(&spxBPLock[BlockId], &lockHandle);
|
|
|
|
for (pChunk = spxBPHead[BlockId];
|
|
pChunk != NULL;
|
|
pChunk = pChunk->bc_Next)
|
|
{
|
|
CTEAssert(pChunk->bc_BlkId == BlockId);
|
|
if (pBlkHdr->bh_pChunk == pChunk)
|
|
{
|
|
DBGPRINT(SYSTEM, INFO,
|
|
("SpxBPFreeBlock: Returning Block %lx to chunk %lx for Id %d\n",
|
|
pBlkHdr, pChunk, BlockId));
|
|
|
|
CTEAssert (pChunk->bc_NumFrees < spxNumBlks[BlockId]);
|
|
pChunk->bc_NumFrees ++;
|
|
pBlkHdr->bh_Next = pChunk->bc_FreeHead;
|
|
pChunk->bc_FreeHead = pBlkHdr;
|
|
break;
|
|
}
|
|
}
|
|
CTEAssert ((pChunk != NULL) && (pChunk->bc_FreeHead == pBlkHdr));
|
|
|
|
CTEFreeLock(&spxBPLock[BlockId], lockHandle);
|
|
return;
|
|
}
|
|
|
|
|
|
|
|
|
|
ULONG
|
|
spxBPAgePool(
|
|
IN PVOID Context,
|
|
IN BOOLEAN TimerShuttingDown
|
|
)
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Age out the block pool of unused blocks
|
|
|
|
Arguments:
|
|
|
|
|
|
Return Value:
|
|
|
|
|
|
--*/
|
|
{
|
|
PBLK_CHUNK pChunk, *ppChunk, pFree = NULL;
|
|
LONG i, j, NumBlksPerChunk;
|
|
CTELockHandle lockHandle;
|
|
PNDIS_PACKET pNdisPkt;
|
|
PNDIS_BUFFER pNdisBuffer;
|
|
|
|
if (TimerShuttingDown)
|
|
{
|
|
return TIMER_DONT_REQUEUE;
|
|
}
|
|
|
|
for (i = 0; i < NUM_BLKIDS; i++)
|
|
{
|
|
NumBlksPerChunk = spxNumBlks[i];
|
|
CTEGetLock(&spxBPLock[i], &lockHandle);
|
|
|
|
for (ppChunk = &spxBPHead[i];
|
|
(pChunk = *ppChunk) != NULL; )
|
|
{
|
|
if ((pChunk->bc_NumFrees == NumBlksPerChunk) &&
|
|
(++(pChunk->bc_Age) >= MAX_BLOCK_POOL_AGE))
|
|
{
|
|
DBGPRINT(SYSTEM, INFO,
|
|
("spxBPAgePool: freeing Chunk %lx, Id %d\n",
|
|
pChunk, pChunk->bc_BlkId));
|
|
|
|
*ppChunk = pChunk->bc_Next;
|
|
#ifdef PROFILING
|
|
InterlockedIncrement( &SpxStatistics.stat_NumBPAge);
|
|
#endif
|
|
if (pChunk->bc_BlkId == BLKID_NDISSEND)
|
|
{
|
|
PBLK_HDR pBlkHdr;
|
|
|
|
// We need to free Ndis stuff for these guys
|
|
pBlkHdr = pChunk->bc_FreeHead;
|
|
|
|
for (j = 0, pBlkHdr = pChunk->bc_FreeHead;
|
|
j < NumBlksPerChunk;
|
|
j++, pBlkHdr = pBlkHdr->bh_Next)
|
|
{
|
|
|
|
pNdisPkt = (PNDIS_PACKET)((PBYTE)pBlkHdr + sizeof(BLK_HDR));
|
|
|
|
NdisUnchainBufferAtFront(
|
|
pNdisPkt,
|
|
&pNdisBuffer);
|
|
|
|
NdisFreeBuffer(pNdisBuffer);
|
|
|
|
NdisUnchainBufferAtFront(
|
|
pNdisPkt,
|
|
&pNdisBuffer);
|
|
|
|
NdisFreeBuffer(pNdisBuffer);
|
|
|
|
}
|
|
}
|
|
|
|
SpxFreeMemory(pChunk);
|
|
}
|
|
else
|
|
{
|
|
ppChunk = &pChunk->bc_Next;
|
|
}
|
|
}
|
|
CTEFreeLock(&spxBPLock[i], lockHandle);
|
|
}
|
|
|
|
return TIMER_REQUEUE_CUR_VALUE;
|
|
}
|
|
|
|
#if !defined SPX_OWN_PACKETS
|
|
//
|
|
// GrowSPXSendPacketsList
|
|
// Called when we dont have any free packets in the SendPacketsList.
|
|
//
|
|
// Allocate a packet pool, allocate all the packets for that pool and
|
|
// store these on a list.
|
|
//
|
|
// Returns: Pointer to newly allocated packet, or NULL if this faild.
|
|
//
|
|
PNDIS_PACKET
|
|
GrowSPXSendPacketList(void)
|
|
{
|
|
NdisResEntry *NewEntry;
|
|
NDIS_STATUS Status;
|
|
PNDIS_PACKET Packet, ReturnPacket;
|
|
uint i;
|
|
CTELockHandle Handle;
|
|
|
|
CTEGetLock(&SendHeaderLock, &Handle);
|
|
|
|
if (CurrentSendPacketCount >= MaxPacketCount)
|
|
goto failure;
|
|
|
|
// First, allocate a tracking structure.
|
|
NewEntry = CTEAllocMem(sizeof(NdisResEntry));
|
|
if (NewEntry == NULL)
|
|
goto failure;
|
|
|
|
NewEntry->nre_handle = (void *) NDIS_PACKET_POOL_TAG_FOR_NWLNKSPX;
|
|
|
|
// Got a tracking structure. Now allocate a packet pool.
|
|
NdisAllocatePacketPoolEx(
|
|
&Status,
|
|
&NewEntry->nre_handle,
|
|
PACKET_GROW_COUNT,
|
|
0,
|
|
sizeof(SPX_SEND_RESD)
|
|
);
|
|
|
|
if (Status != NDIS_STATUS_SUCCESS) {
|
|
CTEFreeMem(NewEntry);
|
|
goto failure;
|
|
}
|
|
|
|
NdisSetPacketPoolProtocolId(NewEntry->nre_handle,NDIS_PROTOCOL_ID_IPX);
|
|
|
|
// We've allocated the pool. Now initialize the packets, and link them
|
|
// on the free list.
|
|
ReturnPacket = NULL;
|
|
|
|
// Link the new NDIS resource tracker entry onto the list.
|
|
NewEntry->nre_next = SendPacketPoolList;
|
|
SendPacketPoolList = NewEntry;
|
|
CurrentSendPacketCount += PACKET_GROW_COUNT;
|
|
CTEFreeLock(&SendHeaderLock, Handle);
|
|
|
|
for (i = 0; i < PACKET_GROW_COUNT; i++) {
|
|
SPX_SEND_RESD *SendReserved;
|
|
|
|
NdisAllocatePacket(&Status, &Packet, NewEntry->nre_handle);
|
|
if (Status != NDIS_STATUS_SUCCESS) {
|
|
CTEAssert(FALSE);
|
|
break;
|
|
}
|
|
|
|
CTEMemSet(Packet->ProtocolReserved, 0, sizeof(SPX_SEND_RESD));
|
|
SendReserved = (SPX_SEND_RESD *)Packet->ProtocolReserved;
|
|
// store whatever's required in the reserved section.
|
|
|
|
if (i != 0) {
|
|
(void)SpxFreeSendPacket(SpxDevice, Packet);
|
|
} else
|
|
ReturnPacket = Packet;
|
|
|
|
}
|
|
|
|
// We've put all but the first one on the list. Return the first one.
|
|
return ReturnPacket;
|
|
|
|
failure:
|
|
CTEFreeLock(&SendHeaderLock, Handle);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
//
|
|
// GrowSPXRecvPacketsList
|
|
// Called when we dont have any free packets in the RecvPacketsList.
|
|
//
|
|
// Allocate a packet pool, allocate all the packets for that pool and
|
|
// store these on a list.
|
|
//
|
|
// Returns: Pointer to newly allocated packet, or NULL if this faild.
|
|
//
|
|
PNDIS_PACKET
|
|
GrowSPXRecvPacketList(void)
|
|
{
|
|
NdisResEntry *NewEntry;
|
|
NDIS_STATUS Status;
|
|
PNDIS_PACKET Packet, ReturnPacket;
|
|
uint i;
|
|
CTELockHandle Handle;
|
|
|
|
CTEGetLock(&RecvHeaderLock, &Handle);
|
|
|
|
if (CurrentRecvPacketCount >= MaxPacketCount)
|
|
goto failure;
|
|
|
|
// First, allocate a tracking structure.
|
|
NewEntry = CTEAllocMem(sizeof(NdisResEntry));
|
|
if (NewEntry == NULL)
|
|
goto failure;
|
|
|
|
NewEntry->nre_handle = (void *) NDIS_PACKET_POOL_TAG_FOR_NWLNKSPX;
|
|
|
|
// Got a tracking structure. Now allocate a packet pool.
|
|
NdisAllocatePacketPoolEx(
|
|
&Status,
|
|
&NewEntry->nre_handle,
|
|
PACKET_GROW_COUNT,
|
|
0,
|
|
sizeof(SPX_RECV_RESD)
|
|
);
|
|
|
|
if (Status != NDIS_STATUS_SUCCESS) {
|
|
CTEFreeMem(NewEntry);
|
|
goto failure;
|
|
}
|
|
|
|
NdisSetPacketPoolProtocolId(NewEntry->nre_handle,NDIS_PROTOCOL_ID_IPX);
|
|
|
|
// We've allocated the pool. Now initialize the packets, and link them
|
|
// on the free list.
|
|
ReturnPacket = NULL;
|
|
|
|
// Link the new NDIS resource tracker entry onto the list.
|
|
NewEntry->nre_next = RecvPacketPoolList;
|
|
RecvPacketPoolList = NewEntry;
|
|
CurrentRecvPacketCount += PACKET_GROW_COUNT;
|
|
CTEFreeLock(&RecvHeaderLock, Handle);
|
|
|
|
for (i = 0; i < PACKET_GROW_COUNT; i++) {
|
|
SPX_RECV_RESD *RecvReserved;
|
|
|
|
NdisAllocatePacket(&Status, &Packet, NewEntry->nre_handle);
|
|
if (Status != NDIS_STATUS_SUCCESS) {
|
|
CTEAssert(FALSE);
|
|
break;
|
|
}
|
|
|
|
CTEMemSet(Packet->ProtocolReserved, 0, sizeof(SPX_RECV_RESD));
|
|
RecvReserved = (SPX_RECV_RESD *)Packet->ProtocolReserved;
|
|
// store whatever's required in the reserved section.
|
|
|
|
if (i != 0) {
|
|
(void)SpxFreeRecvPacket(SpxDevice, Packet);
|
|
} else
|
|
ReturnPacket = Packet;
|
|
|
|
}
|
|
|
|
// We've put all but the first one on the list. Return the first one.
|
|
return ReturnPacket;
|
|
|
|
failure:
|
|
CTEFreeLock(&RecvHeaderLock, Handle);
|
|
return NULL;
|
|
|
|
}
|
|
|
|
PNDIS_PACKET
|
|
SpxAllocSendPacket(
|
|
IN PDEVICE _Device,
|
|
OUT NDIS_PACKET **_SendPacket,
|
|
OUT NDIS_STATUS *_Status)
|
|
|
|
{
|
|
PSINGLE_LIST_ENTRY Link;
|
|
SPX_SEND_RESD *Common, *pSendResd;
|
|
PNDIS_BUFFER pNdisIpxMacBuffer, pNdisIpxSpxBuffer;
|
|
NDIS_STATUS ndisStatus;
|
|
PUCHAR pHdrMem = NULL;
|
|
|
|
Link = ExInterlockedPopEntrySList(&SendPacketList, &SendHeaderLock);
|
|
|
|
if (Link != NULL) {
|
|
|
|
Common = STRUCT_OF(SPX_SEND_RESD, Link, Linkage);
|
|
(*_SendPacket) = STRUCT_OF(NDIS_PACKET, Common, ProtocolReserved);
|
|
|
|
(*_Status) = NDIS_STATUS_SUCCESS;
|
|
|
|
} else {
|
|
|
|
(*_SendPacket) = GrowSPXSendPacketList();
|
|
(*_Status) = NDIS_STATUS_SUCCESS;
|
|
|
|
if (NULL == *_SendPacket) {
|
|
DBGPRINT(NDIS, DBG, ("Couldn't grow packets allocated...\r\n"));
|
|
(*_Status) = NDIS_STATUS_RESOURCES;
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
//
|
|
// Now add the NdisBuffers to the packet.
|
|
// 1. IPX MAC HDR
|
|
// 2. IPX/SPX Hdr
|
|
// 3. Chain these
|
|
//
|
|
|
|
if (NDIS_STATUS_SUCCESS == (*_Status)) {
|
|
|
|
//
|
|
// First allocate the memory
|
|
//
|
|
pHdrMem = SpxAllocateMemory(IpxMacHdrNeeded + MIN_IPXSPX2_HDRSIZE);
|
|
|
|
if (NULL == pHdrMem) {
|
|
DBGPRINT(NDIS, DBG, ("Cannot allocate non paged pool for sendpacket\n"));
|
|
(*_Status) = NDIS_STATUS_RESOURCES;
|
|
goto failure;
|
|
}
|
|
|
|
NdisAllocateBuffer(
|
|
&ndisStatus,
|
|
&pNdisIpxMacBuffer,
|
|
SpxDevice->dev_NdisBufferPoolHandle,
|
|
pHdrMem,
|
|
IpxMacHdrNeeded);
|
|
|
|
if (ndisStatus != NDIS_STATUS_SUCCESS)
|
|
{
|
|
|
|
if (NULL != pHdrMem) {
|
|
SpxFreeMemory(pHdrMem);
|
|
pHdrMem = NULL;
|
|
}
|
|
|
|
DBGPRINT(NDIS, DBG, ("NdisallocateBuffer failed\r\n", ndisStatus));
|
|
goto failure;
|
|
}
|
|
|
|
// Link the buffer descriptor into the packet descriptor
|
|
NdisChainBufferAtBack(
|
|
(*_SendPacket),
|
|
pNdisIpxMacBuffer);
|
|
|
|
|
|
NdisAllocateBuffer(
|
|
&ndisStatus,
|
|
&pNdisIpxSpxBuffer,
|
|
SpxDevice->dev_NdisBufferPoolHandle,
|
|
pHdrMem + IpxMacHdrNeeded,
|
|
MIN_IPXSPX2_HDRSIZE);
|
|
|
|
if (ndisStatus != NDIS_STATUS_SUCCESS)
|
|
{
|
|
DBGPRINT(NDIS, DBG, ("NdisallocateBuffer failed\r\n", ndisStatus));
|
|
goto failure;
|
|
}
|
|
|
|
// Link the buffer descriptor into the packet descriptor
|
|
NdisChainBufferAtBack(
|
|
(*_SendPacket),
|
|
pNdisIpxSpxBuffer);
|
|
|
|
pSendResd = (PSPX_SEND_RESD)(*_SendPacket)->ProtocolReserved;
|
|
|
|
// Initialize elements of the protocol reserved structure.
|
|
pSendResd->sr_Id = IDENTIFIER_SPX;
|
|
pSendResd->sr_Reserved1 = NULL;
|
|
pSendResd->sr_Reserved2 = NULL;
|
|
pSendResd->sr_State = SPX_SENDPKT_IDLE;
|
|
|
|
return (*_SendPacket);
|
|
}
|
|
|
|
failure:
|
|
|
|
SpxFreeSendPacket(SpxDevice, (*_SendPacket));
|
|
(*_Status) = NDIS_STATUS_RESOURCES;
|
|
return NULL;
|
|
|
|
}
|
|
|
|
PNDIS_PACKET
|
|
SpxAllocRecvPacket(
|
|
IN PDEVICE _Device,
|
|
OUT NDIS_PACKET **_RecvPacket,
|
|
OUT NDIS_STATUS *_Status)
|
|
{
|
|
|
|
PSINGLE_LIST_ENTRY Link;
|
|
SPX_RECV_RESD *Common, *pRecvResd;
|
|
|
|
Link = ExInterlockedPopEntrySList(
|
|
&RecvPacketList,
|
|
&RecvHeaderLock
|
|
);
|
|
|
|
if (Link != NULL) {
|
|
Common = STRUCT_OF(SPX_RECV_RESD, Link, Linkage);
|
|
//PC = STRUCT_OF(PacketContext, Common, pc_common);
|
|
(*_RecvPacket) = STRUCT_OF(NDIS_PACKET, Common, ProtocolReserved);
|
|
|
|
(*_Status) = NDIS_STATUS_SUCCESS;
|
|
} else {
|
|
|
|
(*_RecvPacket) = GrowSPXRecvPacketList();
|
|
(*_Status) = NDIS_STATUS_SUCCESS;
|
|
if (NULL == *_RecvPacket) {
|
|
DBGPRINT(NDIS, DBG, ("Couldn't grow packets allocated...\r\n"));
|
|
(*_Status) = NDIS_STATUS_RESOURCES;
|
|
}
|
|
}
|
|
|
|
if ((*_Status) == NDIS_STATUS_SUCCESS) {
|
|
|
|
pRecvResd = (PSPX_RECV_RESD)(*_RecvPacket)->ProtocolReserved;
|
|
// Initialize elements of the protocol reserved structure.
|
|
pRecvResd->rr_Id = IDENTIFIER_SPX;
|
|
pRecvResd->rr_State = SPX_RECVPKT_IDLE;
|
|
|
|
}
|
|
|
|
return (*_RecvPacket);
|
|
}
|
|
|
|
//* SpxFreeSendPacket - Free an SPX packet when we're done with it.
|
|
//
|
|
// Called when a send completes and a packet needs to be freed. We look at the
|
|
// packet, decide what to do with it, and free the appropriate components.
|
|
//
|
|
// Entry: Packet - Packet to be freed.
|
|
//
|
|
//
|
|
void
|
|
SpxFreeSendPacket(PDEVICE _Device,
|
|
PNDIS_PACKET _Packet)
|
|
{
|
|
|
|
PNDIS_BUFFER NextBuffer, Buffer;
|
|
SPX_SEND_RESD *Context = (SPX_SEND_RESD *)_Packet->ProtocolReserved;
|
|
PVOID Header = NULL;
|
|
ULONG Length = 0;
|
|
|
|
DBGPRINT(NDIS, DBG,
|
|
("SpxFreeSendPacket\n"));
|
|
|
|
NdisQueryPacket(_Packet, NULL, NULL, &Buffer, NULL);
|
|
|
|
if (NULL != Buffer) {
|
|
NdisQueryBuffer(Buffer, &Header, &Length);
|
|
//KdPrint(("Pointer = %x Length = %x", Header, Length));
|
|
|
|
if (Header != NULL && Length > 0) {
|
|
//KdPrint(("Freed buffer"));
|
|
SpxFreeMemory(Header);
|
|
}
|
|
}
|
|
|
|
while (Buffer != (PNDIS_BUFFER)NULL) {
|
|
NdisGetNextBuffer(Buffer, &NextBuffer);
|
|
NdisFreeBuffer(Buffer);
|
|
Buffer = NextBuffer;
|
|
}
|
|
|
|
NdisReinitializePacket(_Packet);
|
|
|
|
ExInterlockedPushEntrySList(
|
|
&SendPacketList,
|
|
STRUCT_OF(SINGLE_LIST_ENTRY, &(Context->Linkage), Next),
|
|
&SendHeaderLock
|
|
);
|
|
|
|
return;
|
|
}
|
|
|
|
|
|
//* SpxFreeRecvPacket - Free an SPX packet when we're done with it.
|
|
//
|
|
// Called when a recv completes and a packet needs to be freed. We look at the
|
|
// packet, decide what to do with it, and free the appropriate components.
|
|
//
|
|
// Entry: Packet - Packet to be freed.
|
|
//
|
|
//
|
|
|
|
void
|
|
SpxFreeRecvPacket(PDEVICE _Device,
|
|
PNDIS_PACKET _Packet)
|
|
{
|
|
PNDIS_BUFFER NextBuffer, Buffer;
|
|
SPX_RECV_RESD *Context = (SPX_RECV_RESD *)_Packet->ProtocolReserved;
|
|
|
|
DBGPRINT(NDIS, DBG,
|
|
("SpxFreeRecvPacket\n"));
|
|
|
|
NdisQueryPacket(_Packet, NULL, NULL, &Buffer, NULL);
|
|
|
|
while (Buffer != (PNDIS_BUFFER)NULL) {
|
|
NdisGetNextBuffer(Buffer, &NextBuffer);
|
|
NdisFreeBuffer(Buffer);
|
|
Buffer = NextBuffer;
|
|
}
|
|
|
|
NdisReinitializePacket(_Packet);
|
|
|
|
ExInterlockedPushEntrySList(
|
|
&RecvPacketList,
|
|
STRUCT_OF(SINGLE_LIST_ENTRY, &(Context->Linkage), Next),
|
|
&RecvHeaderLock
|
|
);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
void
|
|
SpxReInitSendPacket(PNDIS_PACKET _Packet)
|
|
{
|
|
DBGPRINT(NDIS, DBG,
|
|
("SpxReInitSendPacket\n"));
|
|
}
|
|
|
|
void
|
|
SpxReInitRecvPacket(PNDIS_PACKET _Packet)
|
|
{
|
|
DBGPRINT(NDIS, DBG,
|
|
("SpxReInitRecvPacket\n"));
|
|
}
|
|
|
|
|
|
#endif //SPX_OWN_PACKETS
|
|
|
|
|