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  1. Aug 10, 2012
  2. Aug 09, 2012
    • Jo-Philipp Wich's avatar
      Fix hard reset of alix/soekris hardware under heavy NIC load · c8a01662
      Jo-Philipp Wich authored
      The following patch corrects a hard reset that occurs on alix and
      soekris net5501 hardware. Specifically, this is an issue with the via
      rhine NIC driver. Under periods of extreme load, the via rhine driver
      can cause a reset of the entire system. When this happens no output is
      seen on the console, the device simply reboots. This was reported in the
      following ticket:
      
      Consistent crash on Soekris NET5501
      https://dev.openwrt.org/ticket/11882
      
      
      
      I was able to reproduce the problem locally with numerous alix 2d13
      platforms. Under heavy 64 byte frame size load from a Smartbits traffic
      generator, the alix hardware will hard reset in under 5 minutes. The
      same hardware, under the same load, on FreeBSD 9.0 does not reset.
      
      The patch below backports most of the via rhine changes from kernel 3.5.
      With OpenWrt trunk being on kernel 3.3.8, it seemed prudent to bring
      these changes in to avoid this serious issue.
      
      I've tested this heavily in my test environment and was able to keep the
      device stable under load for extended periods of time without any resets.
      
      Also, a nice side effect of this change is that it significantly raises
      the performance the platform. Without this patch the alix 2d13 can move
      approximately 29,000 packets per second at 64 byte frame sizes. After
      this patch the alix can move 52,000 packets per second at 64 byte frame
      sizes.
      
      I put this patch under the x86 patches as those are the only platforms
      with via rhine hardware that I'm aware of. If it needs to go some place
      else please let me know.
      
      Thanks,
      Adam
      
      Signed-off-by: default avatarAdam Gensler <openwrt@kristenandadam.net>
      
      SVN-Revision: 33072
      c8a01662
    • Florian Fainelli's avatar
      nuport-mac: use dma_mapping_error() instead of checking pointers · 47380a43
      Florian Fainelli authored
      Thanks Gabor for spotting this
      
      SVN-Revision: 33071
      47380a43
  3. Aug 08, 2012
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