From: Fugang Duan <b38611@freescale.com>
To: <b20596@freescale.com>, <davem@davemloft.net>
Cc: <ezequiel.garcia@free-electrons.com>, <netdev@vger.kernel.org>,
<shawn.guo@linaro.org>, <bhutchings@solarflare.com>,
<b38611@freescale.com>, <stephen@networkplumber.org>
Subject: [PATCH v1 0/6] *** net: fec: Enable Software TSO to improve the tx performance ***
Date: Fri, 30 May 2014 10:05:46 +0800 [thread overview]
Message-ID: <1401415552-2263-1-git-send-email-b38611@freescale.com> (raw)
Add SG and software TSO support for FEC.
This feature allows to improve outbound throughput performance.
Tested on imx6dl sabresd board, running iperf tcp tests shows:
* 82% improvement comparing with NO SG & TSO patch
$ ethtool -K eth0 sg on
$ ethtool -K eth0 tso on
[ 3] local 10.192.242.108 port 35388 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 181 MBytes 506 Mbits/sec
$ ethtool -K eth0 sg off
$ ethtool -K eth0 tso off
[ 3] local 10.192.242.108 port 52618 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 99.5 MBytes 278 Mbits/sec
FEC HW support IP header and TCP/UDP hw checksum, support multi buffer descriptor transfer
one frame, but don't support HW TSO, so FEC bandwidth is limited to this.
The patch set just enable TSO feature. Test on imx6dl sabresd board, there have 82% improvement.
The software TSO also tested on imx6sx platform, the cpu loading reduce from 100% to 52% with the
same Bandwidth, later, i will send some patch let FEC support imx6sx platform.
Fugang Duan (6):
net: fec: Factorize the .xmit transmit function
net: fec: Enable IP header hardware checksum
net: fec: Factorize feature setting
net: fec: Increase buffer descriptor entry number
net: fec: Add Scatter/gather support
net: fec: Add software TSO support
drivers/net/ethernet/freescale/fec.h | 12 +-
drivers/net/ethernet/freescale/fec_main.c | 510 +++++++++++++++++++++++-----
2 files changed, 427 insertions(+), 95 deletions(-)
--
1.7.8
next reply other threads:[~2014-05-30 3:27 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-30 2:05 Fugang Duan [this message]
2014-05-30 2:05 ` [PATCH v1 1/6] net: fec: Factorize the .xmit transmit function Fugang Duan
2014-05-30 2:05 ` [PATCH v1 2/6] net: fec: Enable IP header hardware checksum Fugang Duan
2014-05-30 2:05 ` [PATCH v1 3/6] net: fec: Factorize feature setting Fugang Duan
2014-05-30 2:05 ` [PATCH v1 4/6] net: fec: Increase buffer descriptor entry number Fugang Duan
2014-05-30 9:10 ` David Laight
2014-05-30 9:42 ` fugang.duan
2014-05-30 13:13 ` Eric Dumazet
2014-05-30 14:01 ` ezequiel.garcia
2014-05-30 14:54 ` Eric Dumazet
2014-05-30 15:08 ` fugang.duan
2014-05-30 15:34 ` David Laight
2014-05-30 15:52 ` fugang.duan
2014-05-30 15:58 ` Eric Dumazet
2014-05-30 16:35 ` ezequiel.garcia
2014-05-30 15:40 ` Eric Dumazet
2014-05-30 15:46 ` fugang.duan
2014-05-30 2:05 ` [PATCH v1 5/6] net: fec: Add Scatter/gather support Fugang Duan
2014-05-30 4:37 ` Eric Dumazet
2014-05-30 4:48 ` fugang.duan
2014-05-30 14:26 ` Frank.Li
2014-05-30 2:05 ` [PATCH v1 6/6] net: fec: Add software TSO support Fugang Duan
2014-05-30 6:30 ` Eric Dumazet
2014-05-30 7:16 ` fugang.duan
2014-05-30 16:21 ` Eric Dumazet
2014-06-01 0:55 ` fugang.duan
2014-06-01 1:39 ` Eric Dumazet
2014-06-01 2:25 ` fugang.duan
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