diff options
| -rw-r--r-- | include/net/dsa.h | 6 | ||||
| -rw-r--r-- | net/dsa/slave.c | 12 |
2 files changed, 18 insertions, 0 deletions
diff --git a/include/net/dsa.h b/include/net/dsa.h index 04e93bafb7bd..4e60d2610f20 100644 --- a/include/net/dsa.h +++ b/include/net/dsa.h @@ -537,6 +537,12 @@ struct dsa_switch_ops { struct ethtool_regs *regs, void *p); /* + * Upper device tracking. + */ + int (*port_prechangeupper)(struct dsa_switch *ds, int port, + struct netdev_notifier_changeupper_info *info); + + /* * Bridge integration */ int (*set_ageing_time)(struct dsa_switch *ds, unsigned int msecs); diff --git a/net/dsa/slave.c b/net/dsa/slave.c index c6806eef906f..59c80052e950 100644 --- a/net/dsa/slave.c +++ b/net/dsa/slave.c @@ -2032,10 +2032,22 @@ static int dsa_slave_netdevice_event(struct notifier_block *nb, switch (event) { case NETDEV_PRECHANGEUPPER: { struct netdev_notifier_changeupper_info *info = ptr; + struct dsa_switch *ds; + struct dsa_port *dp; + int err; if (!dsa_slave_dev_check(dev)) return dsa_prevent_bridging_8021q_upper(dev, ptr); + dp = dsa_slave_to_port(dev); + ds = dp->ds; + + if (ds->ops->port_prechangeupper) { + err = ds->ops->port_prechangeupper(ds, dp->index, info); + if (err) + return notifier_from_errno(err); + } + if (is_vlan_dev(info->upper_dev)) return dsa_slave_check_8021q_upper(dev, ptr); break; |