Viewing file: mpls.h (943 B) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (c) 2014 Nicira, Inc. */
#ifndef _NET_MPLS_H #define _NET_MPLS_H 1
#include <linux/if_ether.h> #include <linux/netdevice.h> #include <linux/mpls.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); }
static inline struct mpls_shim_hdr mpls_entry_encode(u32 label, unsigned int ttl, unsigned int tc, bool bos) { struct mpls_shim_hdr result;
result.label_stack_entry = cpu_to_be32((label << MPLS_LS_LABEL_SHIFT) | (tc << MPLS_LS_TC_SHIFT) | (bos ? (1 << MPLS_LS_S_SHIFT) : 0) | (ttl << MPLS_LS_TTL_SHIFT)); return result; }
#endif
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