linux-stable.git/net/dsa, branch v4.8

net: dsa: support switchdev ageing time attr

2016-07-20T02:42:01+00:00

Add a new function for DSA drivers to handle the switchdev
SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME attribute.

The ageing time is passed as milliseconds.

Also because we can have multiple logical bridges on top of a physical
switch and ageing time are switch-wide, call the driver function with
the fastest ageing time in use on the chip instead of the requested one.

Signed-off-by: Vivien Didelot 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: dsa: Fix non static symbol warning

2016-07-12T18:34:30+00:00

Fixes the following sparse warning:

net/dsa/dsa2.c:680:6: warning:
 symbol '_dsa_unregister_switch' was not declared. Should it be static?

Signed-off-by: Wei Yongjun 
Signed-off-by: David S. Miller

net: dsa: initialize the routing table

2016-07-09T03:59:49+00:00

The routing table of every switch in a tree is currently initialized to
all zeros. This is an issue since 0 is a valid port number.

Add a DSA_RTABLE_NONE=-1 constant to initialize the signed values of the
routing table pointing to other switches.

This fixes the device mapping of the mv88e6xxx driver where the port
pointing to the switch itself and to non-existent switches was wrongly
configured to be 0. It is now set to the expected 0xf value.

Signed-off-by: Vivien Didelot 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: dsa: Initialize CPU port ethtool ops per tree

2016-06-08T18:23:42+00:00

Now that we can properly support multiple distinct trees in the system,
using a global variable: dsa_cpu_port_ethtool_ops is getting clobbered
as soon as the second switch tree gets probed, and we don't want that.

We need to move this to be dynamically allocated, and since we can't
really be comparing addresses anymore to determine first time
initialization versus any other times, just move this to dsa.c and
dsa2.c where the remainder of the dst/ds initialization happens.

The operations teardown restores the master netdev's ethtool_ops to its
original ethtool_ops pointer (typically within the Ethernet driver)

Signed-off-by: Florian Fainelli 
Reviewed-by: Andrew Lunn 
Signed-off-by: David S. Miller

net: dsa: Add initialization helper for CPU port ethtool_ops

2016-06-08T18:23:42+00:00

Add a helper function: dsa_cpu_port_ethtool_init() which initializes a
custom ethtool_ops structure with custom DSA ethtool operations for CPU
ports. This is a preliminary change to move the initialization outside
of net/dsa/slave.c.

Reviewed-by: Vivien Didelot 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: dsa: Provide a slave MII bus if needed

2016-06-08T18:23:41+00:00

Mimic what net/dsa/dsa.c does and provide a slave MII bus by default
which will be created if the driver implements a phy_read method.

Reviewed-by: Andrew Lunn 
Reviewed-by: Vivien Didelot 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: dsa: Initialize ds->enabled_port_mask and ds->phys_mii_mask

2016-06-08T18:23:41+00:00

Some drivers rely on these two bitmasks to contain the correct values
for them to successfully probe and initialize at drv->setup() time,
calculate correct values to put in both masks as early as possible in
dsa_get_ports_dn().

Reviewed-by: Andrew Lunn 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: dsa: Provide unique DSA slave MII bus names

2016-06-08T18:23:41+00:00

In case we have multiples trees and switches with the same index, we
need to add another discriminating id: the switch tree.

Reviewed-by: Andrew Lunn 
Reviewed-by: Vivien Didelot 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: dsa: Add new binding implementation

2016-06-04T21:29:55+00:00

The existing DSA binding has a number of limitations and problems. The
main problem is that it cannot represent a switch as a linux device,
hanging off some bus. It is limited to one CPU port. The DSA platform
device is artificial, and does not really represent hardware.

Implement a new binding which can be embedded into any type of node on
a bus to represent one switch device, and its links to other switches.

Signed-off-by: Andrew Lunn 
Signed-off-by: Florian Fainelli 
Signed-off-by: David S. Miller

net: dsa: Make mdio bus optional

2016-06-04T21:29:54+00:00

The switch may want to instantiate its own MDIO bus. Only do it
centrally if the switch has not already created one, and the read op
is implemented.

Signed-off-by: Andrew Lunn 
Reviewed-by: Florian Fainelli 
Signed-off-by: David S. Miller