FilterAttach中分配NetBufferListPool

最新推荐文章于 2024-10-30 00:10:48 发布

原创最新推荐文章于 2024-10-30 00:10:48 发布 · 432 阅读

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//
      // Allocate UserSendNetBufferListPool
      //
        NdisZeroMemory(&PoolParameters, sizeof(NET_BUFFER_LIST_POOL_PARAMETERS));

        PoolParameters.Header.Type = NDIS_OBJECT_TYPE_DEFAULT;
        PoolParameters.Header.Revision = NET_BUFFER_LIST_POOL_PARAMETERS_REVISION_1;
        PoolParameters.Header.Size = sizeof(PoolParameters);
        PoolParameters.ProtocolId = NDIS_PROTOCOL_ID_DEFAULT;
        PoolParameters.ContextSize = sizeof(SEND_NETBUFLIST_RSVD);
        PoolParameters.fAllocateNetBuffer = TRUE;
        PoolParameters.PoolTag = FILTER_ALLOC_TAG;

        pFilter->UserSendNetBufferListPool = NdisAllocateNetBufferListPool(
                                                         pFilter->FilterHandle,
                                                         &PoolParameters);

        if (pFilter->UserSendNetBufferListPool != NULL)
        {
         DEBUGP(DL_ERROR, ("Successfully to allocate send net buffer list pool.\n"));
        }else{
		 DEBUGP(DL_ERROR, ("Failed to allocate send net buffer list pool.\n"));
         Status = NDIS_STATUS_RESOURCES;
         break;
        }

我一直分配不成功，而且网上问了 BlueScreen when calling NdisAllocatedNetBufferListPool()，甚至高手贴出代码了，我也不成功，结果发现ContextSize有问题：一查，The ContextSize must be a multiple of the value defined by MEMORY_ALLOCATION_ALIGNMENT. 所以结构：SEND_NETBUFLIST_RSVD

//
//Define SEND_NETBUFLIST_RSVD
//
typedef struct _SEND_NETBUFLIST_RSVD   
{
   ULONG                  IsMyPacket;
   NDIS_HANDLE            pFilter;
}SEND_NETBUFLIST_RSVD,*PSEND_NETBUFLIST_RSVD;

所以sizeof(SEND_NETBUFLIST_RSVD)的值必须是MEMORY_ALLOCATION_ALIGNMENT的倍数。而MEMORY_ALLOCATION_ALIGNMENT的值似乎是8？