1 // SPDX-License-Identifier: GPL-2.0
4 #include <linux/netdevice.h>
5 #include <net/rtnetlink.h>
9 static const struct nla_policy dsa_policy[IFLA_DSA_MAX + 1] = {
10 [IFLA_DSA_MASTER] = { .type = NLA_U32 },
13 static int dsa_changelink(struct net_device *dev, struct nlattr *tb[],
14 struct nlattr *data[],
15 struct netlink_ext_ack *extack)
22 if (data[IFLA_DSA_MASTER]) {
23 u32 ifindex = nla_get_u32(data[IFLA_DSA_MASTER]);
24 struct net_device *master;
26 master = __dev_get_by_index(dev_net(dev), ifindex);
30 err = dsa_slave_change_master(dev, master, extack);
38 static size_t dsa_get_size(const struct net_device *dev)
40 return nla_total_size(sizeof(u32)) + /* IFLA_DSA_MASTER */
44 static int dsa_fill_info(struct sk_buff *skb, const struct net_device *dev)
46 struct net_device *master = dsa_slave_to_master(dev);
48 if (nla_put_u32(skb, IFLA_DSA_MASTER, master->ifindex))
54 struct rtnl_link_ops dsa_link_ops __read_mostly = {
56 .priv_size = sizeof(struct dsa_port),
57 .maxtype = IFLA_DSA_MAX,
59 .changelink = dsa_changelink,
60 .get_size = dsa_get_size,
61 .fill_info = dsa_fill_info,