From: Alan Ott <alan-yzvJWuRpmD1zbRFIqnYvSA@public•gmane.org>
To: David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public•gmane.org>
Cc: netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public•gmane.org,
linux-zigbee-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public•gmane.org
Subject: Re: [PATCH 1/6] mac802154: Immediately retry sending failed packets
Date: Tue, 02 Apr 2013 21:59:37 -0400 [thread overview]
Message-ID: <515B8D09.9050304@signal11.us> (raw)
In-Reply-To: <20130402.215625.1555279506975246223.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
On 04/02/2013 09:56 PM, David Miller wrote:
> From: Alan Ott <alan-yzvJWuRpmD1zbRFIqnYvSA@public•gmane.org>
> Date: Tue, 02 Apr 2013 21:24:59 -0400
>
>> I like it for a couple of reasons.
>> 1. Most supported devices have only single packet output buffer, so
>> blocking in the driver is the most straight-forward way to handle it.
>> The alternative is to make each driver have a workqueue for xmit() (to
>> lift the blocking out from atomic context). This makes each driver simpler.
>>
>> 2. All of the flow control can be handled one time in the mac802154 layer.
> We have a perfectly working flow control mechanism in the generic
> networking queuing layer. Please use it instead of inventing things.
I'm pretty sure that's what I'm doing in [1]. When I say "flow control
can be handled," I mean managing calls to netif_stop_queue() and
netif_wake_queue(). Is there something else I should be doing instead?
> If it does not meet your needs, fix it, rather than go off and do
> your own thing. That way everyone benfits, not just you.
Fully agreed.
Alan.
[1] http://www.spinics.net/lists/netdev/msg231483.html
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next prev parent reply other threads:[~2013-04-03 1:59 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-02 18:47 [PATCH 0/6] 802.15.4 and 6LoWPAN Buffering Fixes Alan Ott
[not found] ` <1364928481-1813-1-git-send-email-alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-02 18:47 ` [PATCH 1/6] mac802154: Immediately retry sending failed packets Alan Ott
[not found] ` <1364928481-1813-2-git-send-email-alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-02 19:11 ` Alexander Smirnov
[not found] ` <CAJmB2rCr5ds11+iN=W5GCKsUgdfb57uKg+mH4NY4CWw6EFCTbg-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-02 20:28 ` Alan Ott
2013-04-02 21:28 ` Alan Ott
[not found] ` <515B4D79.40805-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-02 22:35 ` Alan Ott
2013-04-02 23:13 ` Werner Almesberger
2013-04-03 1:24 ` Alan Ott
2013-04-03 1:56 ` [Linux-zigbee-devel] " David Miller
[not found] ` <20130402.215625.1555279506975246223.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2013-04-03 1:59 ` Alan Ott [this message]
[not found] ` <515B8D09.9050304-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-03 2:03 ` David Miller
[not found] ` <20130402.220315.1782012687105065631.davem-fT/PcQaiUtIeIZ0/mPfg9Q@public.gmane.org>
2013-04-03 2:25 ` Alan Ott
[not found] ` <515B9318.8090101-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-03 2:30 ` David Miller
2013-04-03 2:57 ` [Linux-zigbee-devel] " Alan Ott
2013-04-03 2:38 ` Werner Almesberger
2013-04-02 18:47 ` [PATCH 2/6] mac802154: Move xmit_attemps to stack Alan Ott
2013-04-02 18:47 ` [PATCH 3/6] mac802154: Use netif flow control Alan Ott
2013-04-02 21:21 ` Sergei Shtylyov
2013-04-02 18:47 ` [PATCH 4/6] mac802154: Increase tx_buffer_len Alan Ott
2013-04-02 18:48 ` [PATCH 5/6] 6lowpan: handle dev_queue_xmit error code properly Alan Ott
[not found] ` <1364928481-1813-6-git-send-email-alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-02 19:21 ` Alexander Smirnov
[not found] ` <CAJmB2rB+9-gLV=SVvr4JUc2swjmTaWxD0gYM5VLw8PL1d455JA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-04-02 19:30 ` Alan Ott
2013-04-02 18:48 ` [PATCH 6/6] 6lowpan: return the dev_queue_xmit() return value from lowpan_xmit() Alan Ott
[not found] ` <1364928481-1813-7-git-send-email-alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-02 19:27 ` Alexander Smirnov
2013-04-03 14:00 ` [PATCH v2 0/4] 802.15.4 and 6LoWPAN Buffering Fixes Alan Ott
2013-04-03 14:00 ` [PATCH v2 1/4] mac802154: Do not try to resend failed packets Alan Ott
[not found] ` <1364997658-16498-1-git-send-email-alan-yzvJWuRpmD1zbRFIqnYvSA@public.gmane.org>
2013-04-03 14:00 ` [PATCH v2 2/4] mac802154: Use netif flow control Alan Ott
2013-04-03 14:00 ` [PATCH v2 3/4] mac802154: Increase tx_buffer_len Alan Ott
2013-04-03 14:00 ` [PATCH v2 4/4] 6lowpan: handle dev_queue_xmit() error code properly Alan Ott
2013-04-07 21:06 ` [PATCH v2 0/4] 802.15.4 and 6LoWPAN Buffering Fixes David Miller
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