netdev - Re: KS8695: possible NAPI issue

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Message-ID: <1267798077.2576.17.camel@myhost>
Date:	Fri, 05 Mar 2010 22:07:57 +0800
From:	"Figo.zhang" <figo1802@...il.com>
To:	Yegor Yefremov <yegorslists@...glemail.com>
Cc:	Dick Hollenbeck <dick@...tplc.com>, netdev@...r.kernel.org,
	zealcook@...il.com
Subject: Re: KS8695: possible NAPI issue


> 
> My tests look like following:
> 
> 1. system start
> 2. ping one host: O.K.
> 3. nc -l -p 5000 > /var/test (about 1Mb): O.K.
> 4. ping the same host: failed
1. type "arp" command, see the arp is exit or expire?
2. at this point, see is it still have RX interrpt and receive packet in
ks8695_rx()? (in some watchpoint add printk). 

> 
> and even if the fourth test succeeds, if I then send a file from other
> host the next ping or any other communication fails. I just tried to
> make some SSH sessions. It goes without a problem till I issue a ping
> after that.
> 
> If I test the system with nuttcp I have no problem.
> 
> Do you have any idea how to debug this? If I remove the NAPI support I
> have no problem with the same kernel and environment. I'd really like
> to get the whole stuff working.
> 
> Regards,
> Yegor


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