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    • Vipul Pandya's avatar
      cxgb4: Add T4 filter support · f2b7e78d
      Vipul Pandya authored
      
      
      The T4 architecture is capable of filtering ingress packets at line rate
      using the rule in TCAM. If packet hits a rule in the TCAM then it can be either
      dropped or passed to the receive queues based on a rule settings.
      
      This patch adds framework for managing filters and to use T4's filter
      capabilities. It constructs a Firmware Filter Work Request which writes the
      filter at a specified index to get the work done. It hosts shadow copy of
      ingress filter entry to check field size limitations and save memory in the
      case where the filter table is large.
      Signed-off-by: default avatarVipul Pandya <vipul@chelsio.com>
      Signed-off-by: default avatarRoland Dreier <roland@purestorage.com>
      f2b7e78d
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