/* SPDX-License-Identifier: GPL-2.0-only *//* * Copyright (c) 2014 Nicira, Inc. */ #ifndef _NET_MPLS_H#define _NET_MPLS_H 1 #include <linux/if_ether.h>#include <linux/netdevice.h>#include <linux/mpls.h> #define MPLS_HLEN 4 struct mpls_shim_hdr {	__be32 label_stack_entry;}; static inline bool eth_p_mpls(__be16 eth_type){	return eth_type == htons(ETH_P_MPLS_UC) ||		eth_type == htons(ETH_P_MPLS_MC);} static inline struct mpls_shim_hdr *mpls_hdr(const struct sk_buff *skb){	return (struct mpls_shim_hdr *)skb_network_header(skb);} static inline struct mpls_shim_hdr mpls_entry_encode(u32 label,						     unsigned int ttl,						     unsigned int tc,						     bool bos){	struct mpls_shim_hdr result; 	result.label_stack_entry =		cpu_to_be32((label << MPLS_LS_LABEL_SHIFT) |			    (tc << MPLS_LS_TC_SHIFT) |			    (bos ? (1 << MPLS_LS_S_SHIFT) : 0) |			    (ttl << MPLS_LS_TTL_SHIFT));	return result;} #endif