From: Stephen Hemminger <stephen@networkplumber.org>
To: Michael Ma <make0818@gmail.com>
Cc: Linux Kernel Network Developers <netdev@vger.kernel.org>
Subject: Re: Why do we need tasklet in IFB?
Date: Fri, 28 Oct 2016 14:38:08 -0700 [thread overview]
Message-ID: <20161028143808.3134f296@xeon-e3> (raw)
In-Reply-To: <CAAmHdhz_g5_+Uqp47cPm3NQd=8=9tCecddQLVCfHbChx=Tjhcw@mail.gmail.com>
On Fri, 28 Oct 2016 14:36:27 -0700
Michael Ma <make0818@gmail.com> wrote:
> Hi -
>
> Currently IFB uses tasklet to process tx/rx on the interface that
> forwarded the packet to IFB. My understanding on why we're doing this
> is that since dev_queue_xmit() can be invoked in interrupt, we want to
> defer the processing of original tx/rx in case ifb_xmit() is called
> from interrupt.
dev_queue_xmit is only called from interrupt if doing netconsole.
next prev parent reply other threads:[~2016-10-28 21:37 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-28 21:36 Why do we need tasklet in IFB? Michael Ma
2016-10-28 21:38 ` Stephen Hemminger [this message]
[not found] ` <CAAmHdhxyrAQqKczaLyX8UmozdUdApbozM71vFv-j+YLnP1m21g@mail.gmail.com>
[not found] ` <20161028144803.4d3f5a2a@xeon-e3>
[not found] ` <CAAmHdhwWGygKtcNR2Bazh-TMoAahEaAf6N5CPWjnvun0BfUdLA@mail.gmail.com>
2016-10-31 18:02 ` Michael Ma
2016-10-31 18:02 ` Michael Ma
2016-10-31 18:10 ` David Miller
2016-11-01 11:38 ` Jamal Hadi Salim
2016-11-01 18:49 ` Michael Ma
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