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From: Robert Watson <rwatson@FreeBSD.org>
Date: Thu, 15 May 2003 18:13:17 -0700 (PDT)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org,
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X-FreeBSD-CVS-Branch: HEAD
Subject: cvs commit: src/sys/dev/fxp if_fxp.c
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rwatson     2003/05/15 18:13:17 PDT

  FreeBSD src repository

  Modified files:
    sys/dev/fxp          if_fxp.c 
  Log:
  Add a tunable/sysctl "hw.fxp_noflow" which disables flow control support
  on if_fxp cards.  When flow control is enabled, if the operating system
  doesn't acknowledge the packet buffer filling, the card will begin to
  generate ethernet quench packets, but appears to get into a feedback
  loop of some sort, hosing local switches.  This is a temporary workaround
  for 5.1: the ability to configure flow control should probably be
  exposed by some or another management interface on ethernet link layer
  devices.
  
  Approved by:    re (bmah)
  Reviewed by:    mux
  
  Revision  Changes    Path
  1.179     +5 -1      src/sys/dev/fxp/if_fxp.c