BMC/Intel-BMC/linux.git/drivers/s390/net, branch dev-4.4

qeth: initialize net_device with carrier off

2016-09-15T06:27:42+00:00

[ Upstream commit e5ebe63214d44d4dcf43df02edf3613e04d671b9 ] /sys/class/net//operstate for an active qeth network interface offen shows "unknown", which translates to "state UNKNOWN in output of "ip link show". It is caused by a missing initialization of the __LINK_STATE_NOCARRIER bit in the net_device state field. This patch adds a netif_carrier_off() invocation when creating the net_device for a qeth device. Signed-off-by: Ursula Braun Acked-by: Hendrik Brueckner Reference-ID: Bugzilla 133209 Signed-off-by: David S. Miller Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman

qeth: delete napi struct when removing a qeth device

2016-08-10T09:49:28+00:00

commit 7831b4ff0d926e0deeaabef9db8800ed069a2757 upstream. A qeth_card contains a napi_struct linked to the net_device during device probing. This struct must be deleted when removing the qeth device, otherwise Panic on oops can occur when qeth devices are repeatedly removed and added. Fixes: a1c3ed4c9ca ("qeth: NAPI support for l2 and l3 discipline") Signed-off-by: Ursula Braun Tested-by: Alexander Klein Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman

s390/qeth: optimize MAC handling in rx_mode callback

2015-10-07T11:52:04+00:00

In layer2 mode of the qeth driver, MAC address lists from struct net_device require mapping to the OSA-card. The existing implementation is inefficient for lists with more than several MAC addresses, since for every ndo_set_rx_mode callback it removes all MAC addresses first, and then registers the current MAC address list. This patch changes implementation of ndo_set_rx_mode callback in qeth, only performing hardware registration/removal for new/deleted addresses. To shorten lookup of MAC addresses registered addresses are kept in a hashtable instead of a linear list. Signed-off-by: Lakhvich Dmitriy Signed-off-by: Ursula Braun Reviewed-by: Eugene Crosser Reviewed-by: Thomas Richter Tested-by: Christian Borntraeger Signed-off-by: David S. Miller

s390/qeth: switch to napi_gro_receive

2015-10-07T11:52:04+00:00

Add support for GRO (generic receive offload) in the layer 2 part of device driver qeth. This results in a performance improvement when GRO and RX is turned on. Signed-off-by: Thomas Richter Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

s390/iucv: do not use arrays as argument

2015-09-21T23:03:04+00:00

The iucv code uses arrays as arguments. Even though this does not really cause a problem, it could be misleading, since the compiler turns array arguments into just a pointer argument. To be more precise this patch changes the array arguments into pointers. Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

qeth: add layer 2 RX/TX checksum offloading

2015-09-21T23:03:04+00:00

Checksum offloading for send and receive is already supported for layer 3 (IP layer). This patch adds support for RX and TX hardware checksum offloading for layer 2 (MAC layer). The hardware calculates the checksum for IP UDP and TCP packets. This patch moves the hardware checksum offloading setup to the set of common functions in qeth_core_main.c. Layer 2 and layer 3 now simply call the same common functions. Also note that TX checksum offloading is always enabled. The device driver relies on the TCP/IP stack to make use of this feature. Signed-off-by: Thomas Richter Signed-off-by: Ursula Braun Reviewed-by: Eugene Crosser Signed-off-by: David S. Miller

qeth: move OSA portname into deprecated status

2015-09-21T23:03:04+00:00

An OSA-Express port name was required to identify a shared OSA port. All operating system instances that shared the port had to use the same port name. This requirement no longer applies. Signed-off-by: Ursula Braun Signed-off-by: David S. Miller

qeth: no write permission for readonly sysattr

2015-09-21T23:03:04+00:00

User is not allowed to write into bridge_state sysfs file. Fixed attribute not mislead the user Signed-off-by: Lakhvich Dmitriy Signed-off-by: Ursula Braun Reported-by: Peter Oberparleiter Reviewed-by: Eugene Crosser Reviewed-by: Thomas Richter Signed-off-by: David S. Miller

qeth: remove extraneous length from %pM format

2015-09-21T23:03:03+00:00

Length specifier in the %pM format is not supported (at least, not documented). Remove it, and also an extraneous '&' for the array. Signed-off-by: Eugene Crosser Signed-off-by: Ursula Braun Suggested-by: Joe Perches Signed-off-by: David S. Miller

s390: remove unneeded variables

2015-08-07T07:57:01+00:00

This patch remove unneeded variables used to store return values. These issues were detected with the Coccinelle script: scripts/coccinelle/misc/returnvar.cocci [heiko.carstens@de.ibm.com]: make qeth_l[2/3]_stop() return void Signed-off-by: Peter Senna Tschudin Signed-off-by: Heiko Carstens Signed-off-by: Martin Schwidefsky