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switchdev: convert STP update to switchdev attr set

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STP update is just a settable port attribute, so convert
switchdev_port_stp_update to an attr set.

For DSA, the prepare phase is skipped and STP updates are only done in the
commit phase.  This is because currently the DSA drivers don't need to
allocate any memory for STP updates and the STP update will not fail to HW
(unless something horrible goes wrong on the MDIO bus, in which case the
prepare phase wouldn't have been able to predict anyway).

Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Scott Feldman
2015-05-10 09:47:51 -07:00
committed by David S. Miller
parent c4f20321d9
commit 3563606258
5 changed files with 31 additions and 50 deletions
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20
net/dsa/slave.c
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@@ -345,6 +345,24 @@ static int dsa_slave_stp_update(struct net_device *dev, u8 state)
return ret;
}
static int dsa_slave_port_attr_set(struct net_device *dev,
struct switchdev_attr *attr)
{
int ret = 0;
switch (attr->id) {
case SWITCHDEV_ATTR_PORT_STP_STATE:
if (attr->trans == SWITCHDEV_TRANS_COMMIT)
ret = dsa_slave_stp_update(dev, attr->stp_state);
break;
default:
ret = -EOPNOTSUPP;
break;
}
return ret;
}
static int dsa_slave_bridge_port_join(struct net_device *dev,
struct net_device *br)
{
@@ -683,7 +701,7 @@ static const struct net_device_ops dsa_slave_netdev_ops = {
static const struct switchdev_ops dsa_slave_switchdev_ops = {
.switchdev_port_attr_get = dsa_slave_port_attr_get,
.switchdev_port_stp_update = dsa_slave_stp_update,
.switchdev_port_attr_set = dsa_slave_port_attr_set,
};
static void dsa_slave_adjust_link(struct net_device *dev)