forked from Minki/linux
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
|
/*
|
||
|
|
* 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);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* 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;
|
||
|
|
}
|
||
|
|
#endif
|