From owner-freebsd-bugs  Fri May 24 17:26:57 1996
Return-Path: owner-bugs
Received: (from root@localhost)
          by freefall.freebsd.org (8.7.5/8.7.3) id RAA22589
          for bugs-outgoing; Fri, 24 May 1996 17:26:57 -0700 (PDT)
Received: from gw1.att.com (gw1.att.com [192.20.239.133])
          by freefall.freebsd.org (8.7.5/8.7.3) with SMTP id RAA22580
          for <bugs@freebsd.org>; Fri, 24 May 1996 17:26:52 -0700 (PDT)
Received: from aloft.UUCP by ig1.att.att.com id AA04438; Fri, 24 May 96 20:18:32 EDT
From: gtc@aloft.att.com (gary.corcoran)
To: bugs@freebsd.org, mevans@candle.com
Received: from aloft (aloft.cnet.att.com) by aluxpo (4.1/DCS-aluxpo-M4.3)
	id AA21490; Fri, 24 May 96 20:21:19 EDT
Received: from stargazer (stargazer.cnet.att.com) by aloft (4.1/DCS-aloft-M5.1)
	id AA23022; Fri, 24 May 96 20:21:25 EDT
Received: by stargazer (4.1/DCS-aloft_client-S2.1)
	id AA18200; Fri, 24 May 96 20:21:22 EDT
Date: Fri, 24 May 96 20:21:22 EDT
Original-From: aluxpo!aloft!gtc (gary.corcoran)
Message-Id: <9605250021.AA18200@stargazer>
Original-To: freebsd.org!bugs, candle.com!mevans
Subject: Re:  3c509 transmit hang
Sender: owner-bugs@freebsd.org
X-Loop: FreeBSD.org
Precedence: bulk


Mike,

>	Discovered a defect in pci/if_vx.c leading to a permanent hang
>when transmitting large quantities of data (such as ftp).  The
>flag requesting a transmit-complete interrupt is not being set
>in the output packet prefix.  According to the 3com 3c5x9
>technical reference, bit 15 of the length word is the "request
>transmit-complete flag".  Adding the bit to the outw sending the
>length prefix corrects the hang condition.

Do you know/could you check  if this bug is also in the non-PCI (ISA/EISA)
3c5x9 driver?  Sorry I don't recall the file name offhand, and I'm not at
my system now.

>	I'd send in a diff, but I've migrated this driver backward to
>2.1, so it would regress other changes in current.  Please let
>me know if there's a more suitable way to provide this
>information.

If this bug *is* in the ISA/EISA 3c5x9 driver, I run 2.1R, and would
appreciate receiving a diff for the fix against the 2.1R source code,
if you have it.

Thanks,
Gary

Gary Corcoran
gtc@aloft.att.com