bridge: implement rtnl_link_ops->slave_changelink

Allow rtnetlink users to set port info via IFLA_INFO_SLAVE_DATA attr

Signed-off-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 16 insertions, 2 deletions

diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 80d23471743f..05aeea1222a7 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -276,7 +276,7 @@ static int br_afspec(struct net_bridge *br,
         return err;
 }
 
-static const struct nla_policy ifla_brport_policy[IFLA_BRPORT_MAX + 1] = {
+static const struct nla_policy br_port_policy[IFLA_BRPORT_MAX + 1] = {
         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
@@ -382,7 +382,7 @@ int br_setlink(struct net_device *dev, struct nlmsghdr *nlh)
         if (p && protinfo) {
                 if (protinfo->nla_type & NLA_F_NESTED) {
                         err = nla_parse_nested(tb, IFLA_BRPORT_MAX,
-                                               protinfo, ifla_brport_policy);
+                                               protinfo, br_port_policy);
                         if (err)
                                 return err;
 
@@ -461,6 +461,16 @@ static int br_dev_newlink(struct net *src_net, struct net_device *dev,
         return register_netdevice(dev);
 }
 
+static int br_port_slave_changelink(struct net_device *brdev,
+                                    struct net_device *dev,
+                                    struct nlattr *tb[],
+                                    struct nlattr *data[])
+{
+        if (!data)
+                return 0;
+        return br_setport(br_port_get_rtnl(dev), data);
+}
+
 static int br_port_fill_slave_info(struct sk_buff *skb,
                                    const struct net_device *brdev,
                                    const struct net_device *dev)
@@ -504,6 +514,10 @@ struct rtnl_link_ops br_link_ops __read_mostly = {
         .validate               = br_validate,
         .newlink                = br_dev_newlink,
         .dellink                = br_dev_delete,
+
+        .slave_maxtype          = IFLA_BRPORT_MAX,
+        .slave_policy           = br_port_policy,
+        .slave_changelink       = br_port_slave_changelink,
         .get_slave_size         = br_port_get_slave_size,
         .fill_slave_info        = br_port_fill_slave_info,
 };