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net: dsa: allow drivers to do link adjustment

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Whenever libphy determines that the link status of a given PHY/port has
changed, allow to call into the switch driver link adjustment callback
so proper actions can be taken care of by the switch driver upon link
notification.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-08-27 17:04:53 -07:00 • committed by David S. Miller
commit ec9436baed
2 changed files with 11 additions and 0 deletions
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7
include/net/dsa.h
View file

@ -16,6 +16,7 @@
#include <linux/timer.h> #include <linux/timer.h>
#include <linux/workqueue.h> #include <linux/workqueue.h>
#include <linux/of.h> #include <linux/of.h>
#include <linux/phy.h>
#define DSA_MAX_SWITCHES 4 #define DSA_MAX_SWITCHES 4
#define DSA_MAX_PORTS 12 #define DSA_MAX_PORTS 12
@ -181,6 +182,12 @@ struct dsa_switch_driver {
*/ */
void (*poll_link)(struct dsa_switch *ds); void (*poll_link)(struct dsa_switch *ds);
/*
* Link state adjustment (called from libphy)
*/
void (*adjust_link)(struct dsa_switch *ds, int port,
struct phy_device *phydev);
/* /*
* ethtool hardware statistics. * ethtool hardware statistics.
*/ */

4
net/dsa/slave.c
View file

@ -333,6 +333,7 @@ static const struct dsa_device_ops notag_netdev_ops = {
static void dsa_slave_adjust_link(struct net_device *dev) static void dsa_slave_adjust_link(struct net_device *dev)
{ {
struct dsa_slave_priv *p = netdev_priv(dev); struct dsa_slave_priv *p = netdev_priv(dev);
struct dsa_switch *ds = p->parent;
unsigned int status_changed = 0; unsigned int status_changed = 0;
if (p->old_link != p->phy->link) { if (p->old_link != p->phy->link) {
@ -350,6 +351,9 @@ static void dsa_slave_adjust_link(struct net_device *dev)
p->old_pause = p->phy->pause; p->old_pause = p->phy->pause;
} }
if (ds->drv->adjust_link && status_changed)
ds->drv->adjust_link(ds, p->port, p->phy);
if (status_changed) if (status_changed)
phy_print_status(p->phy); phy_print_status(p->phy);
} }