From: arnd@arndb.de (Arnd Bergmann)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 3/3] net: hisilicon: new hip04 ethernet driver
Date: Tue, 25 Mar 2014 18:57:21 +0100 [thread overview]
Message-ID: <4392030.XayIa35sfH@wuerfel> (raw)
In-Reply-To: <CAGVrzcZNM2gUHqq2m2jcaqs-AoWKo_DszYu5ozs2vTR6kFY0kA@mail.gmail.com>
On Tuesday 25 March 2014 10:16:28 Florian Fainelli wrote:
>
> Ok, well that's really unfortunate, to achieve the best of everything,
> the workaround should probably look like:
>
> - keep reclaiming TX buffers in ndo_start_xmit() in case you push more
> packets to the NICs than your timer can free
> - reclaim TX buffers in NAPI poll() context for "symetrical" workloads
> where e.g: TCP ACKs received allow you to complete TX buffers
> - have a timer like you suggest which should help with transmit only
> workloads at a slow rate
Yes, that is what I was thinking, but with orphaning the tx skbs,
we can probably be a little smarter. Note that in order to check
the state of the queue, we have to do a read from uncached memory,
since the hardware also doesn't support cache coherent DMA.
We don't want to do that too often.
Arnd
next prev parent reply other threads:[~2014-03-25 17:57 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-03-24 14:14 [PATCH v3 0/3] add hisilicon hip04 ethernet driver Zhangfei Gao
2014-03-24 14:14 ` [PATCH 1/3] Documentation: add Device tree bindings for Hisilicon hip04 ethernet Zhangfei Gao
2014-03-24 14:14 ` [PATCH 2/3] net: hisilicon: new hip04 MDIO driver Zhangfei Gao
2014-03-24 14:14 ` [PATCH 3/3] net: hisilicon: new hip04 ethernet driver Zhangfei Gao
2014-03-24 15:18 ` Arnd Bergmann
2014-03-25 4:06 ` Zhangfei Gao
2014-03-25 8:12 ` Arnd Bergmann
2014-03-25 17:00 ` Florian Fainelli
2014-03-25 17:05 ` Arnd Bergmann
2014-03-25 17:16 ` Florian Fainelli
2014-03-25 17:57 ` Arnd Bergmann [this message]
2014-03-26 9:55 ` David Laight
2014-03-25 17:17 ` David Laight
2014-03-25 17:21 ` Eric Dumazet
2014-03-25 17:54 ` Arnd Bergmann
2014-03-27 12:53 ` zhangfei
2014-03-24 16:32 ` Florian Fainelli
2014-03-24 17:23 ` Arnd Bergmann
2014-03-24 17:35 ` Florian Fainelli
2014-03-27 6:27 ` Zhangfei Gao
-- strict thread matches above, loose matches on Subject: below --
2014-04-05 4:35 [PATCH v7 0/3] add hisilicon " Zhangfei Gao
2014-04-05 4:35 ` [PATCH 3/3] net: hisilicon: new " Zhangfei Gao
2014-04-07 18:53 ` David Miller
2014-04-08 8:07 ` zhangfei
2014-04-08 8:30 ` David Laight
2014-04-08 9:42 ` Arnd Bergmann
2014-04-08 14:47 ` zhangfei
2014-04-18 13:17 ` zhangfei
2014-04-07 18:56 ` David Miller
2014-04-04 15:16 [PATCH v6 0/3] add hisilicon " Zhangfei Gao
2014-04-04 15:16 ` [PATCH 3/3] net: hisilicon: new " Zhangfei Gao
2014-04-01 13:27 [PATCH v5 0/3] add hisilicon " Zhangfei Gao
2014-04-01 13:27 ` [PATCH 3/3] net: hisilicon: new " Zhangfei Gao
2014-04-02 9:21 ` Arnd Bergmann
2014-04-02 9:51 ` zhangfei
2014-04-02 15:24 ` Arnd Bergmann
2014-04-02 10:04 ` David Laight
2014-04-02 15:49 ` Arnd Bergmann
2014-04-03 6:24 ` Zhangfei Gao
2014-04-03 8:35 ` Arnd Bergmann
2014-04-03 15:22 ` David Miller
2014-04-03 15:38 ` zhangfei
2014-04-03 15:27 ` Russell King - ARM Linux
2014-04-03 15:42 ` David Laight
2014-04-03 15:50 ` Russell King - ARM Linux
2014-04-03 17:57 ` Arnd Bergmann
2014-04-04 6:52 ` Zhangfei Gao
2014-03-28 15:35 [PATCH v4 0/3] add hisilicon " Zhangfei Gao
2014-03-28 15:36 ` [PATCH 3/3] net: hisilicon: new " Zhangfei Gao
2014-03-21 15:09 [PATCH v2 0/3] add hisilicon " Zhangfei Gao
2014-03-21 15:09 ` [PATCH 3/3] net: hisilicon: new " Zhangfei Gao
2014-03-21 15:27 ` Arnd Bergmann
2014-03-22 1:18 ` zhangfei
2014-03-22 8:08 ` Arnd Bergmann
2014-03-18 8:40 [PATCH 0/3] add hisilicon " Zhangfei Gao
2014-03-18 8:40 ` [PATCH 3/3] net: hisilicon: new " Zhangfei Gao
2014-03-18 10:46 ` Russell King - ARM Linux
2014-03-20 9:51 ` Zhangfei Gao
2014-03-24 14:17 ` Rob Herring
2014-03-26 14:22 ` Zhangfei Gao
2014-03-18 11:25 ` Arnd Bergmann
2014-03-20 14:00 ` Zhangfei Gao
2014-03-20 14:31 ` Arnd Bergmann
2014-03-21 5:19 ` Zhangfei Gao
2014-03-21 7:37 ` Arnd Bergmann
2014-03-21 7:56 ` Zhangfei Gao
2014-03-24 8:17 ` Zhangfei Gao
2014-03-24 10:02 ` Arnd Bergmann
2014-03-24 13:23 ` Zhangfei Gao
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