include/net/mpls.h

   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
  14 struct mpls_shim_hdr {
  15         __be32 label_stack_entry;
  16 };
  17
  18 static 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
  24 static 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