mirror of
https://github.com/torvalds/linux.git
synced 2024-12-05 02:23:16 +00:00
87cd83714f
This preserves the existing IFLA_DSA_MASTER which is part of the uAPI and creates an alias named IFLA_DSA_CONDUIT. Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com> Link: https://lore.kernel.org/r/20231023181729.1191071-3-florian.fainelli@broadcom.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
65 lines
1.4 KiB
C
65 lines
1.4 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/* Copyright 2022 NXP
|
|
*/
|
|
#include <linux/netdevice.h>
|
|
#include <net/rtnetlink.h>
|
|
|
|
#include "netlink.h"
|
|
#include "user.h"
|
|
|
|
static const struct nla_policy dsa_policy[IFLA_DSA_MAX + 1] = {
|
|
[IFLA_DSA_CONDUIT] = { .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_CONDUIT]) {
|
|
u32 ifindex = nla_get_u32(data[IFLA_DSA_CONDUIT]);
|
|
struct net_device *conduit;
|
|
|
|
conduit = __dev_get_by_index(dev_net(dev), ifindex);
|
|
if (!conduit)
|
|
return -EINVAL;
|
|
|
|
err = dsa_user_change_conduit(dev, conduit, 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_CONDUIT */
|
|
0;
|
|
}
|
|
|
|
static int dsa_fill_info(struct sk_buff *skb, const struct net_device *dev)
|
|
{
|
|
struct net_device *conduit = dsa_user_to_conduit(dev);
|
|
|
|
if (nla_put_u32(skb, IFLA_DSA_CONDUIT, conduit->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,
|
|
};
|