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net: dsa: add switch notifier

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Add a notifier block per DSA switch, registered against a notifier head
in the switch fabric they belong to.

This infrastructure will allow to propagate fabric-wide events such as
port bridging, VLAN configuration, etc. If a DSA switch driver cares
about cross-chip configuration, such events can be caught.

Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vivien Didelot 2017-02-03 13:20:20 -05:00 • committed by David S. Miller
parent c5d35cb32c
commit f515f192ab
6 changed files with 77 additions and 0 deletions
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6
net/dsa/dsa2.c
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@ -294,6 +294,10 @@ static int dsa_ds_apply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
if (err < 0)
return err;
err = dsa_switch_register_notifier(ds);
if (err)
return err;
if (ds->ops->set_addr) {
err = ds->ops->set_addr(ds, dst->master_netdev->dev_addr);
if (err < 0)
@ -364,6 +368,8 @@ static void dsa_ds_unapply(struct dsa_switch_tree *dst, struct dsa_switch *ds)
if (ds->slave_mii_bus && ds->ops->phy_read)
mdiobus_unregister(ds->slave_mii_bus);
dsa_switch_unregister_notifier(ds);
}
static int dsa_dst_apply(struct dsa_switch_tree *dst)