cvs commit: src/sys/dev/dc if_dc.c

[Marius Strobl]

marius      2008-08-23 20:57:48 UTC

  FreeBSD src repository

  Modified files:
    sys/dev/dc           if_dc.c 
  Log:
  SVN rev 182079 on 2008-08-23 20:57:48Z by marius
  
  - Use m_collapse(9) instead of m_defrag(9) if possible. This results
    in a noticeable reduction in system time spent.
  - If bus_dmamap_load_mbuf_sg(9) fails with EFBIG and we already have
    defragmented the mbuf chain, don't bother to defragment and load it
    a second time just yet as it's likely to fail again anyway.
  
  MFC after:      3 days
  
  Revision  Changes    Path
  1.196     +27 -18    src/sys/dev/dc/if_dc.c