diff options
Diffstat (limited to 'net/dsa/netlink.c')
-rw-r--r-- | net/dsa/netlink.c | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/net/dsa/netlink.c b/net/dsa/netlink.c new file mode 100644 index 0000000000..bd4bbaf851 --- /dev/null +++ b/net/dsa/netlink.c @@ -0,0 +1,64 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright 2022 NXP + */ +#include <linux/netdevice.h> +#include <net/rtnetlink.h> + +#include "netlink.h" +#include "slave.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, +}; |