qeth: do not turn on SG per default
authorUrsula Braun <ubraun@linux.vnet.ibm.com>
Thu, 15 Sep 2016 12:39:26 +0000 (14:39 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 16 Sep 2016 08:29:14 +0000 (04:29 -0400)
commit5722963a8e83309dad831cf6968c4c805aa342c0
tree2beaafe88328f1c6baa4a5872b17886d4393f293
parent243f750fc6f5d8e4dec984a9a785941c67452b8f
qeth: do not turn on SG per default

According to recent performance measurements, turning on net_device
feature NETIF_F_SG only behaves well, but turning on feature
NETIF_F_GSO shows bad results. Since the kernel activates NETIF_F_GSO
automatically as soon as the driver configures feature NETIF_F_SG, qeth
should not activate feature NETIF_F_SG per default, until the qeth
problems with NETIF_F_GSO are solved.

Signed-off-by: Ursula Braun <ubraun@linux.vnet.ibm.com>
Reviewed-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/s390/net/qeth_l2_main.c
drivers/s390/net/qeth_l3_main.c