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    SubjectRe: WARNING: at net/sched/sch_generic.c:219 dev_watchdog+0xfe/0x17e() with tg3 network
    On Wed, Nov 26, 2008 at 02:54:21PM -0800, Matt Carlson wrote:
    > > I've run a new test on a switch I have here at home (another el-cheapo,
    > > non-manageable 100 Mbps, netgear this time). Unfortunately I cannot
    > > reproduce the problem at all. I have disabled FC on my laptop, it did
    > > not have any effect.
    > Disabling FC should have a positive effect, not a negative one. It
    > might be the case that the switch does not advertise nor support FC. If
    > that is true, you might not be able to repro the problem no matter what
    > you did (if your problem is what I think it is). Can you check your
    > link messages and see if it really is negotiated to off? (I see the
    > message above, but I don't think that is with the current switch.)

    yes the switch does advertuse FC :

    willy@wtap:~$ dmesg|grep eth0
    eth0: Tigon3 [partno(BMC5705mA3) rev 3003 PHY(5705)] (PCI:33MHz:32-bit) 10/100/1000Base-T Ethernet 00:0d:9d:91:ef:24
    eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] WireSpeed[0] TSOcap[1]
    eth0: dma_rwctrl[763f0000] dma_mask[64-bit]
    tg3: eth0: Link is up at 100 Mbps, full duplex.
    tg3: eth0: Flow control is on for TX and on for RX.

    > > I have disabled auto-neg and manually forced the
    > > speed to 100/Full on my laptop, and could not reproduce the problem
    > > either (though the speed was much lower due to the switch obviously
    > > negociating 100/Half when not seeing my NWay frames).
    > Yes. If you force the link, both sides must be forced. The switch
    > rightly assumes HD when bringing the link up.

    I know ;-) but not seeing the problem, I started to suspect that the other
    switch was a little bit ill and tried to reproduce some problems I might
    incidently have been encountering on it.


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