Stephen Hemminger wrote:

>On Tue, 09 Nov 2004 11:40:26 -0700
>"Jeff V. Merkey" <jmerkey@drdos.com> wrote:
>
>  
>
>>Patrick McHardy wrote:
>>
>>    
>>
>>>Jeff V. Merkey wrote:
>>>
>>>      
>>>
>>>>Running dual gigabit interfaces at 196 MB/S (megabytes/second) on 
>>>>receive, 12 CLK interacket gap time, 1500 bytes payload
>>>>at 65000 packets per second per gigabit interface, and retransmitting 
>>>>received packets at 130 MB/S out of a third gigabit interface
>>>>with skb, RCU locks in dev_queue_xmit breaks and enters the following 
>>>>state:
>>>>
>>>>Nov  8 15:38:08 ds kernel: Badness in local_bh_enable at 
>>>>kernel/softirq.c:141
>>>>Nov  8 15:38:08 ds kernel:  [<40107d1e>] dump_stack+0x1e/0x30
>>>>Nov  8 15:38:08 ds kernel:  [<401218b0>] local_bh_enable+0x70/0x80
>>>>Nov  8 15:38:08 ds kernel:  [<402c5bbb>] dev_queue_xmit+0x11b/0x250
>>>>Nov  8 15:38:08 ds kernel:  [<f8981cb7>] xmit_skb+0x17/0x20 [dsfs]
>>>>Nov  8 15:38:08 ds kernel:  [<f8981f8e>] xmit_packet+0x2e/0x80 [dsfs]
>>>>Nov  8 15:38:08 ds kernel:  [<f89820eb>] regen_data+0x10b/0x290 [dsfs]
>>>>        
>>>>
>>>There is no such function in the 2.6.9 kernel.
>>>      
>>>
>>Check /include/linux for local_bh_enable and /net/core/dev.c .
>>
>>Jeff
>>
>>    
>>
>>>Regards
>>>Patrick
>>>      
>>>
>
>Patrick is asking about the function regen_data which doesn't exist in the
>standard kernel.
>-
>
>  
>

Code for regen_data cuntion attached. This code provides the example of 
the calls into linux that cause
the RCU locks to fail in dev_queue_xmit. The remainder of this module is 
not open source and
proprietary.

Jeff