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From: Krzysztof Halasa <khc@pm.waw.pl>
To: David Miller <davem@davemloft.net>
Cc: netdev@vger.kernel.org
Subject: Re: netdevice queueing / sendmsg issue?
Date: Sun, 29 Jul 2007 23:03:54 +0200	[thread overview]
Message-ID: <m3fy36ncqt.fsf@maximus.localdomain> (raw)
In-Reply-To: <20070728.224959.74562336.davem@davemloft.net> (David Miller's message of "Sat, 28 Jul 2007 22:49:59 -0700 (PDT)")

David Miller <davem@davemloft.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

  reply	other threads:[~2007-07-29 21:03 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-28 22:25 netdevice queueing / sendmsg issue? Krzysztof Halasa
2007-07-29  5:49 ` David Miller
2007-07-29 21:03   ` Krzysztof Halasa [this message]
2007-08-03 22:18   ` Krzysztof Halasa

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