net: fec: Add Scatter/gather support
Add Scatter/gather support for FEC.
This feature allows to improve outbound throughput performance.
Tested on imx6dl sabresd board:
Running iperf tests shows a 55.4% improvement.
$ ethtool -K eth0 sg off
$ iperf -c 10.192.242.167 -t 3 &
[ 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
$ ethtool -K eth0 sg on
$ iperf -c 10.192.242.167 -t 3 &
[ 3] local 10.192.242.108 port 52617 connected with 10.192.242.167 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0- 3.0 sec 154 MBytes 432 Mbits/sec
CC: Li Frank <B20596@freescale.com>
Signed-off-by: Fugang Duan <B38611@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 files changed
