netdev - Re: netdevice queueing / sendmsg issue?

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Message-ID: <m3fy36ncqt.fsf@maximus.localdomain>
Date:	Sun, 29 Jul 2007 23:03:54 +0200
From:	Krzysztof Halasa <khc@...waw.pl>
To:	David Miller <davem@...emloft.net>
Cc:	netdev@...r.kernel.org
Subject: Re: netdevice queueing / sendmsg issue?

David Miller <davem@...emloft.net> writes:

> Software interrupts might be getting lost, dev_kfree_skb_irq() has to
> queue the kfree_skb() to soft IRQ.
>
> Therefore, dev_kfree_skb_irq() will only work properly from hardware
> interrupt context, where we will return and thus run the scheduled
> software interrupt.
>
> So some things to check out are whether the driver is invoking
> dev_kfree_skb_irq() in the right context, whether ARM might have some
> software interrupt processing preculiarity, etc.

I see. I call dev_kfree_skb_irq() from hardware IRQ handler, so
the main suspect is soft IRQ processing. Should be easy now.

Thanks.
-- 
Krzysztof Halasa
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