Date: Wed, 17 Jan 2007 13:58:32 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-stable@freebsd.org Cc: Mike Andrews <mandrews@bit0.com>, Jack Vogel <jfvogel@gmail.com> Subject: Re: 6.2-RELEASE em0 watchdog timeouts -- sometimes (w/ partial workaround) Message-ID: <200701171358.33120.jhb@freebsd.org> In-Reply-To: <2a41acea0701161907v5bf56c6evf5eef7fdb2311eb3@mail.gmail.com> References: <20070116123019.I46509@bit0.com> <20070117025927.GA25196@icarus.home.lan> <2a41acea0701161907v5bf56c6evf5eef7fdb2311eb3@mail.gmail.com>
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On Tuesday 16 January 2007 22:07, Jack Vogel wrote: > On 1/16/07, Jeremy Chadwick <koitsu@freebsd.org> wrote: > > On Tue, Jan 16, 2007 at 10:53:04AM -0800, Jack Vogel wrote: > > > There are some management related issues with this NIC, first if you > > > have not done so make a DOS bootable device, and run this app I > > > am enclosing, it fixes the prom setting that is wrong on some devices. > > > It will do no harm, and it may solve things. > > > > Jack, > > > > Can you expand on what this application changes in the PROM? I have > > an Intel motherboard which suffers from similar to what the OP has > > reported (em0 watchdog timeouts), and was curious what the utility > > does before firing up the board and trying it. Others may be curious > > to know, too. > > Hmmm, I'm rusty on this, its now been a year or more since I was > first involved in the details, so I may need to amend this later :) > > But from memory, the issue is the value programmed into the MANC > register by the PROM, I don't remember what bit it was, but one bit > is mistakenly set, it causes the hardware to incorrectly intercept some > packets. > > I was snowbound today, but I'll doublecheck on the detail tomorrow > and amend if needed. > > Everyone note that this ONLY effects an 82573 NIC, so make sure of > that before anything else. Is this the IPMI/ASF stuff? If so, you can also work around it by adding 'net.inet.ip.portrange.lowlast=665' to /etc/sysctl.conf. -- John Baldwin
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