[Click] FromHost lockup

[Roman Chertov]

Hello Joonwoo,
    I think I have solved the problem.  I have followed the 
documentation  for netdevice and also looked at the behavior of e1000 
during hard_xmit.  I have attached the patch which has solved the 
problem for me.  Basically, instead of stopping and starting 
netif_queue, I use NETDEV return values to signal Linux what to do.

Roman

Joonwoo Park wrote:
> Hi Roman,
> 
> Have you solved this problem?
> Actually I had similar problem like this, my problem is when polling
> is running, if I do ifdown and ifup, ToDevice task never wake up
> again.
> But something I cannot understand is it occurs on only some version of
> e1000 hardware.
> I am using recent e1000-7.6.15.5 on linux-.2.6.24.7 with polling mode.
> 
> Thanks,
> Joonwoo
> 
> 2008/9/1 Roman Chertov <rchertov at cs.ucsb.edu>:
>> Hello,
>>    I am having some interesting lockup issues with FromHost element.  I
>> am currently using 2.6.24 kernel that Joonwoo made a patch for.  The
>> fake device locks up and it appears that fl_tx never gets called to
>> schedule the run_task, hence no packets get transmitted.  It is as if
>> the netif_wake_queue does not wake up the queue and leaves it in the
>> blocked state.  I am curious if anybody encountered such an issue before.
>>
>> Roman
>> _______________________________________________
>> click mailing list
>> click at amsterdam.lcs.mit.edu
>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
>>
> 

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