cvs commit: src/sys/compat/ndis subr_ndis.c subr_ntoskrnl.c

[Bill Paul]

wpaul       2003/12/12 14:35:13 PST

  FreeBSD src repository

  Modified files:
    sys/compat/ndis      subr_ndis.c subr_ntoskrnl.c 
  Log:
  Implement some more NDIS and ntoskrnl API calls:
  
  subr_ndis.c: NdisGetCurrentSystemTime() which, according to the
  Microsoft documentation returns "the number of 100 nanosecond
  intervals since January 1, 1601." I have no idea what's so special
  about that epoch or why they chose 100 nanosecond ticks. I don't
  know the proper offset to convert nanotime() from the UNIX epoch
  to January 1, 1601, so for now I'm just doing the unit convertion
  to 100s of nanoseconds.
  
  subr_ntoskrnl.c: memcpy(), memset(), ExInterlockedPopEntrySList(),
  ExInterlockedPushEntrySList().
  
  The latter two are different from InterlockedPopEntrySList()
  and InterlockedPushEntrySList() in that they accept a spinlock to
  hold while executing, whereas the non-Ex routines use a lock
  internal to ntoskrnl. I also modified ExInitializePagedLookasideList()
  and ExInitializeNPagedLookasideList() to initialize mutex locks
  within the lookaside structures. It seems that in NDIS 5.0,
  the lookaside allocate/free routines ExInterlockedPopEntrySList()
  and ExInterlockedPushEntrySList(), which require the use of the
  per-lookaside spinlock, whereas in NDIS 5.1, the per-lookaside
  spinlock is deprecated. We need to support both cases.
  
  Note that I appear to be doing something wrong with
  ExInterlockedPopEntrySList() and ExInterlockedPushEntrySList():
  they don't appear to obtain proper pointers to their arguments,
  so I'm probably doing something wrong in terms of their calling
  convention (they're declared to be FASTCALL in Widnows, and I'm
  not sure what that means for gcc). It happens that in my stub
  lookaside implementation, they don't need to do any work anyway,
  so for now I've hacked them to always return NULL, which avoids
  corrupting the stack. I need to do this right though.
  
  Revision  Changes    Path
  1.3       +17 -0     src/sys/compat/ndis/subr_ndis.c
  1.2       +62 -0     src/sys/compat/ndis/subr_ntoskrnl.c