| Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2014 Nicira, Inc. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or |
| 5 | * modify it under the terms of version 2 of the GNU General Public |
| 6 | * License as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, but |
| 9 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 11 | * General Public License for more details. |
| 12 | */ |
| 13 | |
| 14 | #ifndef _NET_MPLS_H |
| 15 | #define _NET_MPLS_H 1 |
| 16 | |
| 17 | #include <linux/if_ether.h> |
| 18 | #include <linux/netdevice.h> |
| 19 | |
| 20 | #define MPLS_HLEN 4 |
| 21 | |
| Jiri Benc | 9095e10 | 2016-09-30 19:08:06 +0200 | [diff] [blame] | 22 | struct mpls_shim_hdr { |
| 23 | __be32 label_stack_entry; |
| 24 | }; |
| 25 | |
| Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 26 | static inline bool eth_p_mpls(__be16 eth_type) |
| 27 | { |
| 28 | return eth_type == htons(ETH_P_MPLS_UC) || |
| 29 | eth_type == htons(ETH_P_MPLS_MC); |
| 30 | } |
| 31 | |
| Jiri Benc | 9095e10 | 2016-09-30 19:08:06 +0200 | [diff] [blame] | 32 | static inline struct mpls_shim_hdr *mpls_hdr(const struct sk_buff *skb) |
| 33 | { |
| 34 | return (struct mpls_shim_hdr *)skb_network_header(skb); |
| 35 | } |
| Simon Horman | 25cd9ba | 2014-10-06 05:05:13 -0700 | [diff] [blame] | 36 | #endif |