| /* SPDX-License-Identifier: GPL-2.0-or-later */ |
| /* |
| * INET An implementation of the TCP/IP protocol suite for the LINUX |
| * operating system. INET is implemented using the BSD Socket |
| * interface as the means of communication with the user level. |
| * |
| * Definitions for the IP protocol. |
| * |
| * Version: @(#)ip.h 1.0.2 04/28/93 |
| * |
| * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> |
| */ |
| #ifndef _LINUX_IP_H |
| #define _LINUX_IP_H |
| |
| #include <linux/skbuff.h> |
| #include <uapi/linux/ip.h> |
| |
| static inline struct iphdr *ip_hdr(const struct sk_buff *skb) |
| { |
| return (struct iphdr *)skb_network_header(skb); |
| } |
| |
| static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb) |
| { |
| return (struct iphdr *)skb_inner_network_header(skb); |
| } |
| |
| static inline struct iphdr *ipip_hdr(const struct sk_buff *skb) |
| { |
| return (struct iphdr *)skb_transport_header(skb); |
| } |
| |
| static inline unsigned int ip_transport_len(const struct sk_buff *skb) |
| { |
| return ntohs(ip_hdr(skb)->tot_len) - skb_network_header_len(skb); |
| } |
| #endif /* _LINUX_IP_H */ |
