cvs commit: src/sys/pci if_rl.c

[Pyun YongHyeon]

yongari     2008-04-17 04:16:50 UTC

  FreeBSD src repository

  Modified files:        (Branch: RELENG_7)
    sys/pci              if_rl.c 
  Log:
  MFC if_rl.c, rev 1.174 to RELENG_7.
    It seems that RealTek 8129/8139 chip reports invalid length of
    received frame under certain conditions. wpaul said the length
    0xfff0 is special meaning that indicates hardware is in the
    process of copying a packet into host memory. But it seems
    there are other cases that hardware is busy or stuck in bad
    situation even if the received frame length is not 0xfff0.
    To work-around this condition, add a check that verifys that
    recevied frame length is in valid range. If received length is out
    of range reinitialize hardware to recover from stuck condition.
  
  Revision   Changes    Path
  1.170.2.3  +5 -3      src/sys/pci/if_rl.c