linux/net/dsa, branch v4.11

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2017-02-11T07:31:11Z

net: dsa: Fix duplicate object rule

2017-02-09T22:11:09Z

While adding switch.o to the list of DSA object files, we essentially duplicated the previous obj-y line and just added switch.o, remove the duplicate. Fixes: f515f192ab4f ("net: dsa: add switch notifier") Signed-off-by: Florian Fainelli Reviewed-by: Vivien Didelot Signed-off-by: David S. Miller

net: dsa: Do not destroy invalid network devices

2017-02-08T19:50:51Z

dsa_slave_create() can fail, and dsa_user_port_unapply() will properly check for the network device not being NULL before attempting to destroy it. We were not setting the slave network device as NULL if dsa_slave_create() failed, so we would later on be calling dsa_slave_destroy() on a now free'd and unitialized network device, causing crashes in dsa_slave_destroy(). Fixes: 83c0afaec7b7 ("net: dsa: Add new binding implementation") Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller

net: dsa: Do not clobber PHY link outside of state machine

2017-02-07T18:48:22Z

Calling phy_read_status() means that we may call into genphy_read_status() which in turn will use genphy_update_link() which can make changes to phydev->link outside of the state machine's state transitions. This is an invalid behavior that is now caught as of 811a919135b9 ("phy state machine: failsafe leave invalid RUNNING state") Reported-by: Zefir Kurtisi Signed-off-by: Florian Fainelli Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: dsa: Add support for platform data

2017-02-07T15:51:45Z

Allow drivers to use the new DSA API with platform data. Most of the code in net/dsa/dsa2.c does not rely so much on device_nodes and can get the same information from platform_data instead. We purposely do not support distributed configurations with platform data, so drivers should be providing a pointer to a 'struct dsa_chip_data' structure if they wish to communicate per-port layout. Multiple CPUs port could potentially be supported and dsa_chip_data is extended to receive up to one reference to an upstream network device per port described by a dsa_chip_data structure. dsa_dev_to_net_device() increments the network device's reference count, so we intentionally call dev_put() to be consistent with the DT-enabled path, until we have a generic notifier based solution. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller

net: dsa: Rename and export dev_to_net_device()

2017-02-07T15:51:45Z

In preparation for using this function in net/dsa/dsa2.c, rename the function to make its scope DSA specific, and export it. Signed-off-by: Florian Fainelli Signed-off-by: David S. Miller

net: dsa: introduce bridge notifier

2017-02-06T21:53:29Z

A slave device will now notify the switch fabric once its port is bridged or unbridged, instead of calling directly its switch operations. This code allows propagating cross-chip bridging events in the fabric. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller

net: dsa: add switch notifier

2017-02-06T21:53:29Z

Add a notifier block per DSA switch, registered against a notifier head in the switch fabric they belong to. This infrastructure will allow to propagate fabric-wide events such as port bridging, VLAN configuration, etc. If a DSA switch driver cares about cross-chip configuration, such events can be caught. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller

net: dsa: change state setter scope

2017-02-06T21:53:29Z

The scope of the functions inside net/dsa/slave.c must be the slave net_device pointer. Change to state setter helper accordingly to simplify callers. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller

net: dsa: rollback bridging on error

2017-02-06T21:53:28Z

When an error is returned during the bridging of a port in a NETDEV_CHANGEUPPER event, net/core/dev.c rolls back the operation. Be consistent and unassign dp->bridge_dev when this happens. In the meantime, add comments to document this behavior. Signed-off-by: Vivien Didelot Signed-off-by: David S. Miller