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