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From: Pyun YongHyeon <yongari@FreeBSD.org>
Date: Sat, 7 Nov 2009 01:01:33 +0000 (UTC)
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Subject: cvs commit: src/sys/dev/bge if_bge.c if_bgereg.h
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yongari     2009-11-07 01:01:33 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/bge          if_bge.c if_bgereg.h 
  Log:
  SVN rev 199011 on 2009-11-07 01:01:33Z by yongari
  
  Reimplement Rx buffer allocation to handle dma map load failure.
  Introduce two spare dma maps for standard buffer and jumbo buffer
  respectively. If loading a dma map failed reuse previously loaded
  dma map. This should fix unloaded dma map is used in case of dma
  map load failure. Also don't blindly unload dma map and defer
  dma map sync and unloading operation until we know dma map for new
  buffer is successfully loaded. This change saves unnecessary dma
  load/unload operation. Previously bge(4) tried to reuse mbuf
  with unloaded dma map which is really bad thing in bus_dma(9)
  perspective.
  While I'm here update if_iqdrops if we can't allocate Rx buffers.
  
  Revision  Changes    Path
  1.237     +86 -80    src/sys/dev/bge/if_bge.c
  1.89      +2 -0      src/sys/dev/bge/if_bgereg.h