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net: phylib: add link_change_notify callback to phy device

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Add a notify callback to inform phy drivers when the core is about to
do its link adjustment. No change for drivers that do not implement
this callback.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Mack 2014-06-18 11:01:41 +02:00 committed by David S. Miller
parent 916c1689a0
commit 2b8f2a28ea
2 changed files with 12 additions and 0 deletions
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3
drivers/net/phy/phy.c
View File

@ -720,6 +720,9 @@ void phy_state_machine(struct work_struct *work)
mutex_lock(&phydev->lock);
if (phydev->drv->link_change_notify)
phydev->drv->link_change_notify(phydev);
switch (phydev->state) {
case PHY_DOWN:
case PHY_STARTING:

9
include/linux/phy.h
View File

@ -536,6 +536,15 @@ struct phy_driver {
/* See set_wol, but for checking whether Wake on LAN is enabled. */
void (*get_wol)(struct phy_device *dev, struct ethtool_wolinfo *wol);
/*
* Called to inform a PHY device driver when the core is about to
* change the link state. This callback is supposed to be used as
* fixup hook for drivers that need to take action when the link
* state changes. Drivers are by no means allowed to mess with the
* PHY device structure in their implementations.
*/
void (*link_change_notify)(struct phy_device *dev);
struct device_driver driver;
};
#define to_phy_driver(d) container_of(d, struct phy_driver, driver)