1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 * Copyright (c) 2014 Nicira, Inc.
 4 */
 5
 6#ifndef _NET_MPLS_H
 7#define _NET_MPLS_H 1
 8
 9#include <linux/if_ether.h>
10#include <linux/netdevice.h>
11
12#define MPLS_HLEN 4
13
14struct mpls_shim_hdr {
15	__be32 label_stack_entry;
16};
17
18static inline bool eth_p_mpls(__be16 eth_type)
19{
20	return eth_type == htons(ETH_P_MPLS_UC) ||
21		eth_type == htons(ETH_P_MPLS_MC);
22}
23
24static inline struct mpls_shim_hdr *mpls_hdr(const struct sk_buff *skb)
25{
26	return (struct mpls_shim_hdr *)skb_network_header(skb);
27}
28#endif