/*
 * 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
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<div class='path'>path: <a href='/cgit.cgi/linux/net-next.git/log/?id=1f5e29ce7989eb75652774004b962ee1eb6e56ca&amp;showmsg=1'>root</a>/<a href='/cgit.cgi/linux/net-next.git/log/include?id=1f5e29ce7989eb75652774004b962ee1eb6e56ca&amp;showmsg=1'>include</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/crypto?id=1f5e29ce7989eb75652774004b962ee1eb6e56ca&amp;showmsg=1'>crypto</a>/<a href='/cgit.cgi/linux/net-next.git/log/include/crypto/null.h?id=1f5e29ce7989eb75652774004b962ee1eb6e56ca&amp;showmsg=1'>null.h</a></div><div class='content'><table class='list nowrap'><tr class='nohover'><th class='left'>Age</th><th class='left'>Commit message (<a href='/cgit.cgi/linux/net-next.git/log/include/crypto/null.h?id=1f5e29ce7989eb75652774004b962ee1eb6e56ca'>Collapse</a>)</th><th class='left'>Author</th><th class='left'>Files</th><th class='left'>Lines</th></tr>