From: David Miller <davem@davemloft.net>
To: eric@nelint.com
Cc: netdev@vger.kernel.org, linux@arm.linux.org.uk, andrew@lunn.ch,
fugang.duan@nxp.com, otavio@ossystems.com.br,
edumazet@google.com, troy.kisky@boundarydevices.com,
u.kleine-koenig@pengutronix.de
Subject: Re: [PATCH 0/3] net: fec: updates to align IP header
Date: Tue, 27 Sep 2016 07:40:06 -0400 (EDT) [thread overview]
Message-ID: <20160927.074006.1952862778935087880.davem@davemloft.net> (raw)
In-Reply-To: <1474728139-9335-1-git-send-email-eric@nelint.com>
From: Eric Nelson <eric@nelint.com>
Date: Sat, 24 Sep 2016 07:42:16 -0700
> This patch series is the outcome of investigation into very high
> numbers of alignment faults on kernel 4.1.33 from the linux-fslc
> tree:
> https://github.com/freescale/linux-fslc/tree/4.1-1.0.x-imx
>
> The first two patches remove support for the receive accelerator (RACC) from
> the i.MX25 and i.MX27 SoCs which don't support the function.
>
> The third patch enables hardware alignment of the ethernet packet payload
> (and especially the IP header) to prevent alignment faults in the IP stack.
>
> Testing on i.MX6UL on the 4.1.33 kernel showed that this patch removed
> on the order of 70k alignment faults during a 100MiB transfer using
> wget.
>
> Testing on an i.MX6Q (SABRE Lite) board on net-next (4.8.0-rc7) showed
> a much more modest improvement from 10's of faults, and it's not clear
> why that's the case.
Series applied and queued up for -stable.
next prev parent reply other threads:[~2016-09-27 11:40 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-09-23 16:43 Alignment issues with freescale FEC driver Eric Nelson
2016-09-23 16:54 ` Eric Dumazet
2016-09-23 17:19 ` Eric Nelson
2016-09-23 17:33 ` Eric Nelson
2016-09-23 18:13 ` Andrew Lunn
2016-09-23 18:30 ` Russell King - ARM Linux
2016-09-23 18:39 ` Eric Nelson
2016-09-23 18:35 ` Eric Nelson
2016-09-24 2:45 ` David Miller
2016-09-24 5:13 ` Andy Duan
2016-09-24 14:42 ` [PATCH 0/3] net: fec: updates to align IP header Eric Nelson
2016-09-24 14:42 ` [PATCH 1/3] net: fec: remove QUIRK_HAS_RACC from i.mx25 Eric Nelson
2016-09-24 14:42 ` [PATCH 2/3] net: fec: remove QUIRK_HAS_RACC from i.mx27 Eric Nelson
2016-09-24 14:42 ` [PATCH 3/3] net: fec: align IP header in hardware Eric Nelson
2016-09-26 9:26 ` David Laight
2016-09-26 18:39 ` Eric Nelson
2016-09-28 16:42 ` David Laight
2016-09-28 17:14 ` Eric Nelson
2016-09-28 17:25 ` Russell King - ARM Linux
2016-09-28 18:01 ` Eric Nelson
2016-09-29 11:07 ` David Laight
2016-09-30 13:27 ` Eric Nelson
2016-09-30 13:49 ` David Laight
2016-09-30 14:16 ` Eric Nelson
2016-10-01 19:52 ` Russell King - ARM Linux
2016-10-03 16:42 ` David Laight
2016-10-03 18:48 ` Eric Nelson
2016-10-08 2:44 ` Andy Duan
2016-09-24 15:09 ` [PATCH 0/3] net: fec: updates to align IP header Andy Duan
2016-09-24 15:29 ` Eric Nelson
2016-09-27 11:40 ` David Miller [this message]
2016-09-24 2:43 ` Alignment issues with freescale FEC driver David Miller
2016-09-24 12:27 ` Eric Nelson
2016-09-23 17:37 ` Russell King - ARM Linux
2016-09-23 18:26 ` Eric Nelson
2016-09-23 18:37 ` Russell King - ARM Linux
2016-09-23 18:49 ` Eric Nelson
2016-09-23 20:22 ` Uwe Kleine-König
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