[linux.git] / include / net / mpls.h

/*
 * Copyright (c) 2014 Nicira, Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of version 2 of the GNU General Public
 * License as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * General Public License for more details.
 */

#ifndef _NET_MPLS_H
#define _NET_MPLS_H 1

#include <linux/if_ether.h>
#include <linux/netdevice.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);
}
#endif
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
9095e10e JB	22	struct mpls_shim_hdr {
	23	__be32 label_stack_entry;
	24	};
	25
25cd9ba0 SH	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
9095e10e JB	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	}
25cd9ba0	36	#endif