net: add netlink_ext_ack argument to rtnl_link_ops.slave_changelink

Add support for extended error reporting.
Signed-off-by: NMatthias Schiffer <mschiffer@universe-factory.net>
Acked-by: NDavid Ahern <dsahern@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/bonding/bond_netlink.c

@@ -132,7 +132,8 @@ static int bond_validate(struct nlattr *tb[], struct nlattr *data[],
 
 static int bond_slave_changelink(struct net_device *bond_dev,
 				 struct net_device *slave_dev,
-				 struct nlattr *tb[], struct nlattr *data[])
+				 struct nlattr *tb[], struct nlattr *data[],
+				 struct netlink_ext_ack *extack)
 {
 	struct bonding *bond = netdev_priv(bond_dev);
 	struct bond_opt_value newval;

include/net/rtnetlink.h

@@ -95,7 +95,8 @@ struct rtnl_link_ops {
 	int			(*slave_changelink)(struct net_device *dev,
 						    struct net_device *slave_dev,
 						    struct nlattr *tb[],
-						    struct nlattr *data[]);
+						    struct nlattr *data[],
+						    struct netlink_ext_ack *extack);
 	size_t			(*get_slave_size)(const struct net_device *dev,
 						  const struct net_device *slave_dev);
 	int			(*fill_slave_info)(struct sk_buff *skb,

net/bridge/br_netlink.c

@@ -897,7 +897,8 @@ static int br_validate(struct nlattr *tb[], struct nlattr *data[],
 static int br_port_slave_changelink(struct net_device *brdev,
 				    struct net_device *dev,
 				    struct nlattr *tb[],
-				    struct nlattr *data[])
+				    struct nlattr *data[],
+				    struct netlink_ext_ack *extack)
 {
 	struct net_bridge *br = netdev_priv(brdev);
 	int ret;

net/core/rtnetlink.c

@@ -2631,7 +2631,8 @@ static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh,
 					return -EOPNOTSUPP;
 
 				err = m_ops->slave_changelink(master_dev, dev,
-							      tb, slave_data);
+							      tb, slave_data,
+							      extack);
 				if (err < 0)
 					return err;
 				status |= DO_SETLINK_NOTIFY;