net: phy: Create sysfs reciprocal links for attached_dev/phydev
authorFlorian Fainelli <f.fainelli@gmail.com>
Thu, 25 May 2017 16:21:41 +0000 (09:21 -0700)
committerDavid S. Miller <davem@davemloft.net>
Fri, 26 May 2017 18:37:40 +0000 (14:37 -0400)
commit5568363f0cb358305b90ab3d3330f757943f6d0d
tree5ce5fec84fd49a6537238a6ea7b7cdcb63943455
parent9226976f9bad60e3eeb36a9d69341a584c87a0c3
net: phy: Create sysfs reciprocal links for attached_dev/phydev

There is currently no way for a program scanning /sys to know whether a
network device is attached to a particular PHY device, just like the PHY
device is not pointed back to its attached network device.

Create a symbolic link in the network device's namespace named "phydev"
which points to the PHY device and create a symbolic link in the PHY
device's namespace named "attached_dev" that points back to the network
device. These links are set up during phy_attach_direct() and removed
during phy_detach() for symetry.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
drivers/net/phy/phy_device.c