cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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mpls.h (943B)

      1/* SPDX-License-Identifier: GPL-2.0-only */
      2/*
      3 * Copyright (c) 2014 Nicira, Inc.
      4 */
      5
      6#ifndef _NET_MPLS_H
      7#define _NET_MPLS_H 1
      8
      9#include <linux/if_ether.h>
     10#include <linux/netdevice.h>
     11#include <linux/mpls.h>
     12
     13#define MPLS_HLEN 4
     14
     15struct mpls_shim_hdr {
     16	__be32 label_stack_entry;
     17};
     18
     19static inline bool eth_p_mpls(__be16 eth_type)
     20{
     21	return eth_type == htons(ETH_P_MPLS_UC) ||
     22		eth_type == htons(ETH_P_MPLS_MC);
     23}
     24
     25static inline struct mpls_shim_hdr *mpls_hdr(const struct sk_buff *skb)
     26{
     27	return (struct mpls_shim_hdr *)skb_network_header(skb);
     28}
     29
     30static inline struct mpls_shim_hdr mpls_entry_encode(u32 label,
     31						     unsigned int ttl,
     32						     unsigned int tc,
     33						     bool bos)
     34{
     35	struct mpls_shim_hdr result;
     36
     37	result.label_stack_entry =
     38		cpu_to_be32((label << MPLS_LS_LABEL_SHIFT) |
     39			    (tc << MPLS_LS_TC_SHIFT) |
     40			    (bos ? (1 << MPLS_LS_S_SHIFT) : 0) |
     41			    (ttl << MPLS_LS_TTL_SHIFT));
     42	return result;
     43}
     44
     45#endif