From: Ming Lei <ming.lei@canonical.com>
Date: Thu, 25 Jul 2013 05:47:54 +0000 (+0800)
Subject: USBNET: increase max rx/tx qlen for improving USB3 thoughtput
X-Git-Tag: v3.12-rc1~132^2~452
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=452c447a497dce3c9faeb9ac7f2e1ff39232876b;p=pandora-kernel.git

USBNET: increase max rx/tx qlen for improving USB3 thoughtput

The default RX_QLEN()/TX_QLEN() didn't consider super speed
USB device, so only max 4 URBs are scheduled at the same time
for tx/rx, then USB3 NIC can't perform very well.

With this patch, both rx and tx thoughput are increased more than
100Mbps when doing iperf test on ax88179_178a USB 3.0 NIC.

Signed-off-by: Ming Lei <ming.lei@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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