| /* SPDX-License-Identifier: GPL-2.0-only */ |
| * Copyright (c) 2014 Nicira, Inc. |
| #include <linux/if_ether.h> |
| #include <linux/netdevice.h> |
| __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, |
| 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)); |