re(4) watchdog timeouts after a short time

[Sepherosa Ziehau]

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.

Best Regards,
sephe

-- 
Live Free or Die
diff --git a/sys/dev/netif/re/if_re.c b/sys/dev/netif/re/if_re.c
index 5f29074..3d17eed 100644
--- a/sys/dev/netif/re/if_re.c
+++ b/sys/dev/netif/re/if_re.c
@@ -2639,8 +2639,10 @@ re_init(void *xsc)
 			pcie_set_max_readrq(sc->re_dev,
 				PCIEM_DEVCTL_MAX_READRQ_512);
 		} else {
+#if 0
 			pcie_set_max_readrq(sc->re_dev,
 				PCIEM_DEVCTL_MAX_READRQ_4096);
+#endif
 		}
 	}