re(4) watchdog timeouts after a short time

[Sepherosa Ziehau]

On Thu, Dec 4, 2008 at 8:04 AM, Joe Talbott <josepht at cstone.net> wrote:
> On Wed, Dec 03, 2008 at 11:34:31AM +0800, Sepherosa Ziehau wrote:
>> On Wed, Dec 3, 2008 at 11:24 AM, Joe Talbott <josepht at cstone.net> wrote:
>> > On Wed, Dec 03, 2008 at 09:16:28AM +0800, Sepherosa Ziehau wrote:
>> >> On Wed, Dec 3, 2008 at 7:00 AM, Joe Talbott <josepht at cstone.net> wrote:
>> >> > I upgraded my 2.1-DEVELOPMENT box from 2.1-DEVELOPMENT from several
>> >> > months ago and my re(4) a RTL8101E card only works for a few seconds
>> >> > after boot.  After which I get watchdog timeouts and am unable to ping
>> >> > a remote host.  I was unable to get any information from tcpdump.
>> >> > Here is the relevant verbose dmesg output and sysctl output.  I have
>> >> > tried disabling rx/tx csum and vlan{mtu,hwtagging} all to no avail.  Let
>> >> > me know what further info is needed.
>> >> >
>> >> > re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
>> >> >        options=1b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING>
>> >> >        inet6 fe80::2a0:d1ff:fe60:25a3%re0 prefixlen 64 scopeid 0x1
>> >> >        inet x.x.x.x netmask 0xffffffc0 broadcast x.x.x.x
>> >> >        ether 00:a0:d1:60:25:a3
>> >> >        media: Ethernet autoselect (100baseTX <full-duplex>)
>> >> >        status: active
>> >>
>> >> Does sysctl hw.re0.imtype=0 help?
>> >
>> > I failed to mention I tried that as well.  It did not work.
>>
>> Try the attached patch.
>
> That works.  I'm not sure if that needs be removed for all cards to I
> made this patch.  Also I'm not sure if the 8102 cards need this or
> not.  Thanks for your help on this.

Thank you for testing.  I think we should not set max read request
size on all 10/100 only NICs.  Please test following patch:
http://leaf.dragonflybsd.org/~sephe/re.diff

Best Regards,
sephe

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