msk0 interface stops working when downloading

Garrett Cooper gcooper at
Wed Nov 24 00:10:08 UTC 2010

On Tue, Nov 23, 2010 at 3:25 PM, Andrew Moran <amoran at> wrote:
> Hey guys,
> After banging my head against this for a few hours, I've decided to ask for help.      I installed FreeBSD 8.1 amd64 on a Shuttle J1 4100 system (tech specs here   I installed from DVD and the install went fine.
> I notice when I pkg_add -r anything,  the network stops responding.
> Some details:
> 1) I can reproduce it 100% by downloading a large file.     low traffic like the SSH connection does not trigger it.   I think it's being triggered by traffic above a certain rate.
> 2) I can recover by restarting the network interfaces (/etc/rc.d/netif stop;  /etc/rc.d/netif start)
> 3) I see no errors in dmesg or /var/log/messages.  Nothing at all.
> 4) I've tried the following in /etc/sysctl.conf:
> net.inet.tcp.tso=0
> net.inet.tcp.inflight.enable=0
> and in /boot/loader.conf:
> hw.pci.enable_msix="0"
> hw.pci.enable_msi="0"
> hw.bce.tso_enable="0"
> But the problem persists.
> The interface is identified as:
> mskc0: <Marvell Yukon 88E8057 Gigabit Ethernet> port 0xe800-0xe8ff mem 0xfebfc000-0xfebfffff irq 17 at device 0.0 on pci2
> msk0: <Marvell Technology Group Ltd. Yukon Ultra 2 Id 0xba Rev 0x00> on mskc0
> msk0: Ethernet address: 80:ee:73:01:60:7d
> miibus0: <MII bus> on msk0
> e1000phy0: <Marvell 88E1149 Gigabit PHY> PHY 0 on miibus0
> e1000phy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT, 1000baseT-FDX, auto
> mskc0: [ITHREAD]
> Does anyone know what could be causing this or how I can resolve it?   Any help is appreciated, thanks.

    1. freebsd-stable is the proper list, not freebsd-current.
    2. I have a similar chipset (not the same though) that hasn't had
any issues for a while:

$ pciconf -lv | grep -A 3 msk
mskc0 at pci0:2:0:0:	class=0x020000 card=0x81f81043 chip=0x436411ab
rev=0x12 hdr=0x00
    vendor     = 'Marvell Semiconductor (Was: Galileo Technology Ltd)'
    device     = 'Yukon PCI-E Gigabit Ethernet Controller (88E8056)'
    class      = network
$ devinfo -v | grep -A 3 mskc0
            mskc0 pnpinfo vendor=0x11ab device=0x4364 subvendor=0x1043
subdevice=0x81f8 class=0x020000 at slot=0 function=0
                  e1000phy0 pnpinfo oui=0x5043 model=0xb rev=0x1 at phyno=0
$ uname -a
FreeBSD orangebox.local 9.0-CURRENT FreeBSD 9.0-CURRENT #0 r215607M:
Sat Nov 20 21:22:34 UTC 2010
gcooper at orangebox.local:/usr/obj/usr/src/sys/ORANGEBOX  amd64

    Sorry for not grabbing the full dmesg output, but unfortunately I
have BUS_DEBUG turned on for this test box, which blows out my syslog
buffer at boot :).
    I've CCed yongari@ for comment.

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