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// SPDX-License-Identifier: GPL-2.0
/* Copyright 2022 NXP
*/
#include <linux/netdevice.h>
#include <net/rtnetlink.h>
#include "dsa_priv.h"
static const struct nla_policy dsa_policy[IFLA_DSA_MAX + 1] = {
[IFLA_DSA_MASTER] = { .type = NLA_U32 },
};
static int dsa_changelink(struct net_device *dev, struct nlattr *tb[],
struct nlattr *data[],
struct netlink_ext_ack *extack)
{
int err;
if (!data)
return 0;
if (data[IFLA_DSA_MASTER]) {
u32 ifindex = nla_get_u32(data[IFLA_DSA_MASTER]);
struct net_device *master;
master = __dev_get_by_index(dev_net(dev), ifindex);
if (!master)
return -EINVAL;
err = dsa_slave_change_master(dev, master, extack);
if (err)
return err;
}
return 0;
}
static size_t dsa_get_size(const struct net_device *dev)
{
return nla_total_size(sizeof(u32)) + /* IFLA_DSA_MASTER */
0;
}
static int dsa_fill_info(struct sk_buff *skb, const struct net_device *dev)
{
struct net_device *master = dsa_slave_to_master(dev);
if (nla_put_u32(skb, IFLA_DSA_MASTER, master->ifindex))
return -EMSGSIZE;
return 0;
}
struct rtnl_link_ops dsa_link_ops __read_mostly = {
.kind = "dsa",
.priv_size = sizeof(struct dsa_port),
.maxtype = IFLA_DSA_MAX,
.policy = dsa_policy,
.changelink = dsa_changelink,
.get_size = dsa_get_size,
.fill_info = dsa_fill_info,
.netns_refund = true,
};
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