sk(4), 3C940 unknown reason hang

[Michael Vince]

Interestingly I just put on 5.3Beta 7 on an AMD64 based machine

and my sk0 interface hangs when I do some file transfers over to the
machine via scp
I just put an intel pci card in to fix the problem


Rong-En Fan wrote:

>[I'm not on list, so please CC me thanks]
>
>Hi,
>
>It is a 4.10-RELEASE-p2 on IBM e225 (Dual P3-1G) and have a 3COM
>3C940 installed on. Since it's installed one year ago, it has
>3 or 4 times unknown reason network hang (no console messages)
>and I have changed 3C940 to another one. The situation is still
>the same. The solution is just `ifconfig down up' then sk(4)
>goes back to work. It's our main nfs server and this problem
>really annoying. I look at the cvsweb, seems no major problem
>fix for RELENG_4 (HEAD fixs a LOR, and I suppose it's only for
>5.x and HEAD). Is there any known problems? (I can't find one
>similar to me on -net and -stable).
>
>The recently once happened this morning, according to mrtg,
>it has a high network traffic (both in and out). Not sure
>if it is related.
>
>Here is the dmesg:
>
>skc0: <3Com 3C940 Gigabit Ethernet> port 0x2100-0x21ff mem
>0xfeb78000-0xfeb7bfff irq 5 at device 9.0 on pci0
>skc0: 3Com Gigabit NIC (3C2000)
>sk0: <Marvell Semiconductor, Inc. Yukon> on skc0
>sk0: Ethernet address: 00:0a:5e:19:b6:3c
>
>Any suggestion and kernel debugging I would like to try.
>
>Regards,
>Rong-En Fan
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>