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authorRoopa Prabhu <roopa@cumulusnetworks.com>2015-03-21 20:27:28 +0300
committerDavid S. Miller <davem@davemloft.net>2015-03-23 23:44:56 +0300
commit558d51fa2f400774ffe3ea76a0df7c1cf92bc598 (patch)
tree9babb941db8b5e62efa883c79e8dd64f9b8e4dad /net/switchdev
parent08b4b8ea799d27c5dd28e8cb9188d2e88e58d294 (diff)
downloadlinux-558d51fa2f400774ffe3ea76a0df7c1cf92bc598.tar.xz
switchdev: fix stp update API to work with layered netdevices
make it same as the netdev_switch_port_bridge_setlink/dellink api (ie traverse lowerdevs to get to the switch port). removes "WARN_ON(!ops->ndo_switch_parent_id_get)" because direct bridge ports can be stacked netdevices (like bonds and team of switch ports) which may not implement this ndo. v2 to v3: - remove changes to bond and team. Bring back the transparently following lowerdevs like i initially had for setlink/getlink (http://www.spinics.net/lists/netdev/msg313436.html) dave and scott feldman also seem to prefer it be that way and move to non-transparent way of doing things if we see a problem down the lane. v3 to v4: - fix ret initialization v4 to v5: - return err on first failure (scott feldman) v5 to v6: - change variable name (err) and initialize to -EOPNOTSUPP (scott feldman). Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com> Acked-by: Scott Feldman <sfeldma@gmail.com> Acked-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/switchdev')
-rw-r--r--net/switchdev/switchdev.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index c9bfa004abed..46568b85c333 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -47,11 +47,20 @@ EXPORT_SYMBOL_GPL(netdev_switch_parent_id_get);
int netdev_switch_port_stp_update(struct net_device *dev, u8 state)
{
const struct swdev_ops *ops = dev->swdev_ops;
+ struct net_device *lower_dev;
+ struct list_head *iter;
+ int err = -EOPNOTSUPP;
- if (!ops || !ops->swdev_port_stp_update)
- return -EOPNOTSUPP;
- WARN_ON(!ops->swdev_parent_id_get);
- return ops->swdev_port_stp_update(dev, state);
+ if (ops && ops->swdev_port_stp_update)
+ return ops->swdev_port_stp_update(dev, state);
+
+ netdev_for_each_lower_dev(dev, lower_dev, iter) {
+ err = netdev_switch_port_stp_update(lower_dev, state);
+ if (err && err != -EOPNOTSUPP)
+ return err;
+ }
+
+ return err;
}
EXPORT_SYMBOL_GPL(netdev_switch_port_stp_update);