linux.git/net/dsa/slave.c, 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: 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 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: Refactor selection of tag ops into a function

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

Replace the two switch statements with an array lookup, and store the
result in the dsa tree structure. The drivers no longer need to know
the selected tag protocol, so remove it from the dsa switch structure.

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

net: dsa: Move port device node into port structure

2016-06-04T21:29:53+00:00

Move the port device node structure into the port structure, from the
chip data. This information is needed in the next step of implementing
the new binding.

The chip data structure is used while parsing the whole old binding,
before the individual switch structures exist. With the new bindings,
this is reversed, the switches exist first, and the interconnections
between the switches is derived from the individual switch
bindings. Thus this chip data structure becomes unneeded.

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

net: dsa: Add a ports structure and use it in the switch structure

2016-06-04T21:29:53+00:00

There are going to be more per-port members added to the switch
structure. So add a port structure and move the netdev into it.

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

net: dsa: slave: Remove MDIO address from switch MDIO bus name

2016-06-04T21:29:52+00:00

The DSA layer should no longer assume the switch is connected to an
MDIO bus. As a result, we cannot use the address on the MDIO bus when
forming the name of the switches internal MDIO bus for its builtin and
possibly external PHYs. The switch index is sufficient to make the
name unique, so drop the MDIO address.

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

net: dsa: slave: chip data is optional, don't dereference NULL

2016-06-04T21:29:52+00:00

The new binding does not make use of dsa_chip_data, a.k.a cd.  When
retrieving the size of the EEPROM attached to a switch, don't assume
there is a cd attached to the switch structure.

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