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Date: Sat, 16 Mar 1996 16:29:36 -0800 (PST)
From: Peter Wemm <peter>
Message-Id: <199603170029.QAA10118@freefall.freebsd.org>
To: CVS-committers, cvs-all, cvs-sys
Subject: cvs commit:  src/sys/i386/isa/ic hd64570.h src/sys/i386/isa if_ar.c if_arregs.h
Sender: owner-cvs-sys@FreeBSD.ORG
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peter       96/03/16 16:29:36

  Modified:    sys/i386/isa  if_ar.c if_arregs.h
               sys/i386/isa/ic  hd64570.h
  Log:
  Changes to the Digi/Arnet SYNC driver:
  
  1. Create 2 x 8k transmit buffer blocks in place of the 16k block previously.
     With this change the speed as tested with ttcp on a 2Mbit link went up
     from 206kbyte/s to 236kbyte/s.
  2. Change the rest of the functions to also have the definition of the
     return value on a sepperate line.
  3. Remove some unused variables.
  4. Add code to recover from DMA underruns.
  5. Reorder ar_get_packets() to handle errors better.
  6. Only allocate a mbuf cluster if the data is more than the mbuf.
  
  (and in a second diff in addition to the above)
  7. Stops the occasional DMA underruns that occurred when 2 channels
     are running at 2Mbit/s.
  
  Submitted by: John Hay <jhay@mikom.csir.co.za>
  
  Revision  Changes    Path
  1.7       +275 -163  src/sys/i386/isa/if_ar.c
  1.2       +2 -1      src/sys/i386/isa/if_arregs.h
  1.2       +7 -1      src/sys/i386/isa/ic/hd64570.h