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List:       linux-bridge
Subject:    [Bridge] Re: Bridge - Fiber Gig to Copper Gig card, crash
From:       Lennert Buytenhek <buytenh () gnu ! org>
Date:       2002-06-23 20:50:37
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Hi,

Somewhat more information would be useful, like a backtrace,
perhaps a guess of which line it crashes on, etc.


cheers,
Lennert


On Mon, Jun 03, 2002 at 11:58:15AM -0400, Kunal Trivedi wrote:

> Hi Lennert,
> I am not sure whether it is driver issue or something else. Here is the
> scenario.
> 
> **** NOTE: This is stock kernel without any modifications.
> 
> brctl addbr aUser
> brctl addif aUser eth1 (Intel Fiber Gig card - e1000 driver)
> brctl addif aUser eth2 (BroadComm copper gig card -- This is onboard card
> on Dell 2550 Poweredge Server - tg3 driver)
> 
> If I send DNS queury packet (ping www.cmu.edu), after putting pkt on wire
> (eth2 side) it gets crashed in 'dev_queue_xmit' function.
> 
> I think packet flows as following.
> 	br_handle_frame_finish()
> 	dst != NULL
> 		br_forward(dst->dst, skb)
> 
> 	__br_forward
> 	__br_forward_finish
> 	__br_queue_push_xmit
> 	dev_queue_xmit
> 
> I don't know, where exactly in dev_queue_xmit. I can send you image and
> other OOPS addresses.
> 
> Unfortunately, I can't compile bridge in kernel. I have to compile as
> module. I hope this will NOT be a problem in debugging.
> 
> Please let me know.
> 
> Many Thanks,
> -Kunal
> 
> ----------------------------
> Kunal Trivedi (412-268-1255)
> Network Development
> Carnegie Mellon University
> 
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