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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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28
net/switchdev/switchdev.c
View file

@ -187,34 +187,6 @@ int switchdev_port_attr_set(struct net_device *dev, struct switchdev_attr *attr)
}
EXPORT_SYMBOL_GPL(switchdev_port_attr_set);
/**
* switchdev_port_stp_update - Notify switch device port of STP
* state change
* @dev: port device
* @state: port STP state
*
* Notify switch device port of bridge port STP state change.
*/
int switchdev_port_stp_update(struct net_device *dev, u8 state)
{
const struct switchdev_ops *ops = dev->switchdev_ops;
struct net_device *lower_dev;
struct list_head *iter;
int err = -EOPNOTSUPP;
if (ops && ops->switchdev_port_stp_update)
return ops->switchdev_port_stp_update(dev, state);
netdev_for_each_lower_dev(dev, lower_dev, iter) {
err = switchdev_port_stp_update(lower_dev, state);
if (err && err != -EOPNOTSUPP)
return err;
}
return err;
}
EXPORT_SYMBOL_GPL(switchdev_port_stp_update);
static DEFINE_MUTEX(switchdev_mutex);
static RAW_NOTIFIER_HEAD(switchdev_notif_chain);