[Bridge] Re: tg3 bridge problems

Gergely Madarasz gorgo at broadband.hu
Tue Jan 11 01:16:42 PST 2005


On Mon, Jan 10, 2005 at 03:43:56PM -0500, Neil Horman wrote:
> Gergely Madarasz wrote:
> >On Mon, Jan 10, 2005 at 02:53:10PM -0500, Neil Horman wrote:
> >
> >>Gergely Madarasz wrote:
> >>
> >>>On Mon, Jan 10, 2005 at 02:41:34PM -0500, Neil Horman wrote:
> >>>>Gergely Madarasz wrote:
> >>>>
> >>>>I've got a tg3 card here.  I'll try re-create it as soon as I have 
> >>>>time. 
> >>>
> >>>
> >>>Sounds great, but I expect it will not occur with a random tg3 card,
> >>>explained above... 
> >>>
> >>
> >>Mmmmm....post your lspci -vvv entry for your broken tg3 card?
> >
> >
> >on the ibm x346:
> >
> >0000:05:00.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5721 
> >Gigabit Ethernet PCI Express (rev 01)
> > ...
> >
> >The other one looks the same, just bus 06 instead of 05 and different
> >Region 0 and Address lines. 
> >
> >Same problem, other machine (ibm x326):
> >
> >0000:02:01.0 Ethernet controller: Broadcom Corporation NetXtreme BCM5704 
> >Gigabit Ethernet (rev 03)
> > ...
> >
> >Greg
> 
> Crud, you're right, I've got a completely different tg3 card.  I'll 
> still try to get a bridge set up to recreate, but it won't tell us much 
> if the problem doesn't re-create.  Can you put a printk in right before 
> netif_receive_skb in tg3_rx to print out the source mac address of any 
> received frames,  we should be able to search for any MACs == 
> 01-80-C2-00-00-00, and determine for sure if the hardware is eating the 
> frame, or something else is dropping it prematurely.

I went for an easier way (couldn't figure printing macs fast enough :),
I'm just printing out if there is a packet received in tg3_rx, and running
tethereal meanwhile. After checking the output for several minutes I'm
sure that every packet received by tg3_rx is accounted for in tethereal,
which means the incoming bpdu's are eaten by the hardware...

Greg



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