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authorVivien Didelot <vivien.didelot@savoirfairelinux.com>2016-03-13 16:21:34 -0400
committerDavid S. Miller <davem@davemloft.net>2016-03-14 16:05:32 -0400
commit6debb68a2d1acd1f5eca1d9d1c79a54dc998b6d6 (patch)
treed5cd4d18aca824a81c59800c3b29edbca623a488 /net
parent16bfa7024eba5e36aff38ba62086b9027373007d (diff)
downloadop-kernel-dev-6debb68a2d1acd1f5eca1d9d1c79a54dc998b6d6.zip
op-kernel-dev-6debb68a2d1acd1f5eca1d9d1c79a54dc998b6d6.tar.gz
net: dsa: refine netdev event notifier
Rework the netdev event handler, similar to what the Mellanox Spectrum driver does, to easily welcome more events later (for example NETDEV_PRECHANGEUPPER) and use netdev helpers (such as netif_is_bridge_master). Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Acked-by: Jiri Pirko <jiri@mellanox.com> Acked-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net')
-rw-r--r--net/dsa/slave.c54
1 files changed, 30 insertions, 24 deletions
diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 8e00f1d..a575f03 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -451,7 +451,7 @@ static int dsa_slave_bridge_port_join(struct net_device *dev,
if (ds->drv->port_bridge_join)
ret = ds->drv->port_bridge_join(ds, p->port, br);
- return ret;
+ return ret == -EOPNOTSUPP ? 0 : ret;
}
static void dsa_slave_bridge_port_leave(struct net_device *dev)
@@ -1143,40 +1143,46 @@ static bool dsa_slave_dev_check(struct net_device *dev)
return dev->netdev_ops == &dsa_slave_netdev_ops;
}
-static int dsa_slave_master_changed(struct net_device *dev)
+static int dsa_slave_port_upper_event(struct net_device *dev,
+ unsigned long event, void *ptr)
{
- struct net_device *master = netdev_master_upper_dev_get(dev);
- struct dsa_slave_priv *p = netdev_priv(dev);
+ struct netdev_notifier_changeupper_info *info = ptr;
+ struct net_device *upper = info->upper_dev;
int err = 0;
- if (master && master->rtnl_link_ops &&
- !strcmp(master->rtnl_link_ops->kind, "bridge"))
- err = dsa_slave_bridge_port_join(dev, master);
- else if (dsa_port_is_bridged(p))
- dsa_slave_bridge_port_leave(dev);
+ switch (event) {
+ case NETDEV_CHANGEUPPER:
+ if (netif_is_bridge_master(upper)) {
+ if (info->linking)
+ err = dsa_slave_bridge_port_join(dev, upper);
+ else
+ dsa_slave_bridge_port_leave(dev);
+ }
- return err;
+ break;
+ }
+
+ return notifier_from_errno(err);
}
-int dsa_slave_netdevice_event(struct notifier_block *unused,
- unsigned long event, void *ptr)
+static int dsa_slave_port_event(struct net_device *dev, unsigned long event,
+ void *ptr)
{
- struct net_device *dev;
- int err = 0;
-
switch (event) {
case NETDEV_CHANGEUPPER:
- dev = netdev_notifier_info_to_dev(ptr);
- if (!dsa_slave_dev_check(dev))
- goto out;
+ return dsa_slave_port_upper_event(dev, event, ptr);
+ }
- err = dsa_slave_master_changed(dev);
- if (err && err != -EOPNOTSUPP)
- netdev_warn(dev, "failed to reflect master change\n");
+ return NOTIFY_DONE;
+}
- break;
- }
+int dsa_slave_netdevice_event(struct notifier_block *unused,
+ unsigned long event, void *ptr)
+{
+ struct net_device *dev = netdev_notifier_info_to_dev(ptr);
+
+ if (dsa_slave_dev_check(dev))
+ return dsa_slave_port_event(dev, event, ptr);
-out:
return NOTIFY_DONE;
}
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