net: ndo_bridge_setlink: Add extack

Drivers may not be able to implement a VLAN addition or reconfiguration.
In those cases it's desirable to explain to the user that it was
rejected (and why).

To that end, add extack argument to ndo_bridge_setlink. Adapt all users
to that change.

Following patches will use the new argument in the bridge driver.

Signed-off-by: Petr Machata <petrm@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 4 insertions, 2 deletions

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index c9c0407a7ee0..3b6e551f9e69 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -4332,7 +4332,8 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
                         goto out;
                 }
 
-                err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags);
+                err = br_dev->netdev_ops->ndo_bridge_setlink(dev, nlh, flags,
+                                                             extack);
                 if (err)
                         goto out;
 
@@ -4344,7 +4345,8 @@ static int rtnl_bridge_setlink(struct sk_buff *skb, struct nlmsghdr *nlh,
                         err = -EOPNOTSUPP;
                 else
                         err = dev->netdev_ops->ndo_bridge_setlink(dev, nlh,
-                                                                  flags);
+                                                                  flags,
+                                                                  extack);
                 if (!err) {
                         flags &= ~BRIDGE_FLAGS_SELF;