Release 4.7 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



static inline bool eth_p_mpls(__be16 eth_type)
{
	return eth_type == htons(ETH_P_MPLS_UC) ||
		eth_type == htons(ETH_P_MPLS_MC);
}

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/*
 * For non-MPLS skbs this will correspond to the network header.
 * For MPLS skbs it will be before the network_header as the MPLS
 * label stack lies between the end of the mac header and the network
 * header. That is, for MPLS skbs the end of the mac header
 * is the top of the MPLS label stack.
 */


static inline unsigned char *skb_mpls_header(struct sk_buff *skb)
{
	return skb_mac_header(skb) + skb->mac_len;
}
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#endif
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Directory: include/net

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