Re: msk0 interface stops working when downloading

Good to know about the GB switch vs 100MB switch. 

But rather than downgrade my switch, I went ahead and bought a NIC and installed it and will just ignore the onboard Marvel one until it someday works :) 

--Andy

On Nov 29, 2010, at 11:03 AM, Gary Gatten wrote:

> 
> 
> -----Original Message-----
> From: owner-freebsd-questions_at_freebsd.org [mailto:owner-freebsd-questions_at_freebsd.org] On Behalf Of John Baldwin
> Sent: Monday, November 29, 2010 8:54 AM
> To: freebsd-current_at_freebsd.org
> Cc: Andrew Moran; freebsd-questions_at_freebsd.org
> Subject: Re: msk0 interface stops working when downloading
> 
> On Tuesday, November 23, 2010 6:25:06 pm Andrew Moran 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 http://us.shuttle.com/J1_4100.aspx).   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]
> 
> When I've seen this on my netbook I did a tcpdump on another machien on the 
> same hub and found that my msk0 device was spewing an endless stream of pause 
> frames.  I've only had this problem with a gigE switch, it works fine for me 
> on a 10/100 switch.
> 
> -- 
> John Baldwin
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> 
> 
> " When I've seen this on my netbook I did a tcpdump on another machien on the same hub and found that my msk0 device was spewing an endless stream of pause frames. "
> 
> If there's an option to disable Ethernet flow control, (commonly used on Gig stuff) perhaps disabling it will prevent the unwanted "spewing".  Unwaanted spewing is always bad.
> 
> 
> 
> 
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