linux-kernel - RE: [PATCH] [NET]: Fix Ooops of napi net_rx

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Message-ID: <36D9DB17C6DE9E40B059440DB8D95F5203F82FC3@orsmsx418.amr.corp.intel.com>
Date:	Tue, 11 Dec 2007 15:12:10 -0800
From:	"Brandeburg, Jesse" <jesse.brandeburg@...el.com>
To:	"Joonwoo Park" <joonwpark81@...il.com>,
	"David Miller" <davem@...emloft.net>
Cc:	<netdev@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<herbert@...dor.apana.org.au>,
	"Kok, Auke-jan H" <auke-jan.h.kok@...el.com>
Subject: RE: [PATCH] [NET]: Fix Ooops of napi net_rx_action.

Joonwoo Park wrote:
>     /* If no Tx and not enough Rx work done, exit the polling mode */
>     if ((!tx_cleaned && (work_done == 0)) ||
>        !netif_running(poll_dev)) {
> quit_polling:
>         if (likely(adapter->itr_setting & 3))
>             e1000_set_itr(adapter);
>         netif_rx_complete(poll_dev, napi);
>         e1000_irq_enable(adapter);

all drivers using NAPI in 2.6.24+ (NNAPI??) must return zero here, after
calling netif_rx_complete.  netif_rx_complete plus work_done != 0 causes
a bug.

>     }
> 
>     return work_done;
> }
> 
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