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authorFlorian Fainelli <f.fainelli@gmail.com>2014-09-24 17:05:18 -0700
committerDavid S. Miller <davem@davemloft.net>2014-09-28 17:14:08 -0400
commitb2f2af21e37f6d12bd735c27da8942331aa9b3d7 (patch)
tree7273e1535a2000d8fb2c651e0e058e39018504b2 /net/dsa/slave.c
parentf7f1de51edbdd53b09061d12758cacd9901c363e (diff)
downloadop-kernel-dev-b2f2af21e37f6d12bd735c27da8942331aa9b3d7.zip
op-kernel-dev-b2f2af21e37f6d12bd735c27da8942331aa9b3d7.tar.gz
net: dsa: allow enabling and disable switch ports
Whenever a per-port network device is used/unused, invoke the switch driver port_enable/port_disable callbacks to allow saving as much power as possible by disabling unused parts of the switch (RX/TX logic, memory arrays, PHYs...). We supply a PHY device argument to make sure the switch driver can act on the PHY device if needed (like putting/taking the PHY out of deep low power mode). Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/dsa/slave.c')
-rw-r--r--net/dsa/slave.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 4392e98..182d30a 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -62,6 +62,7 @@ static int dsa_slave_open(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct net_device *master = p->parent->dst->master_netdev;
+ struct dsa_switch *ds = p->parent;
int err;
if (!(master->flags & IFF_UP))
@@ -84,11 +85,20 @@ static int dsa_slave_open(struct net_device *dev)
goto clear_allmulti;
}
+ if (ds->drv->port_enable) {
+ err = ds->drv->port_enable(ds, p->port, p->phy);
+ if (err)
+ goto clear_promisc;
+ }
+
if (p->phy)
phy_start(p->phy);
return 0;
+clear_promisc:
+ if (dev->flags & IFF_PROMISC)
+ dev_set_promiscuity(master, 0);
clear_allmulti:
if (dev->flags & IFF_ALLMULTI)
dev_set_allmulti(master, -1);
@@ -103,6 +113,7 @@ static int dsa_slave_close(struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct net_device *master = p->parent->dst->master_netdev;
+ struct dsa_switch *ds = p->parent;
if (p->phy)
phy_stop(p->phy);
@@ -117,6 +128,9 @@ static int dsa_slave_close(struct net_device *dev)
if (!ether_addr_equal(dev->dev_addr, master->dev_addr))
dev_uc_del(master, dev->dev_addr);
+ if (ds->drv->port_disable)
+ ds->drv->port_disable(ds, p->port, p->phy);
+
return 0;
}
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