Commit | Line | Data |
---|---|---|
25cd9ba0 SH |
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 | ||
22 | static inline bool eth_p_mpls(__be16 eth_type) | |
23 | { | |
24 | return eth_type == htons(ETH_P_MPLS_UC) || | |
25 | eth_type == htons(ETH_P_MPLS_MC); | |
26 | } | |
27 | ||
28 | /* | |
29 | * For non-MPLS skbs this will correspond to the network header. | |
30 | * For MPLS skbs it will be before the network_header as the MPLS | |
31 | * label stack lies between the end of the mac header and the network | |
32 | * header. That is, for MPLS skbs the end of the mac header | |
33 | * is the top of the MPLS label stack. | |
34 | */ | |
35 | static inline unsigned char *skb_mpls_header(struct sk_buff *skb) | |
36 | { | |
37 | return skb_mac_header(skb) + skb->mac_len; | |
38 | } | |
39 | #endif |