Commit | Line | Data |
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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
3 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
4 | * operating system. INET is implemented using the BSD Socket | |
5 | * interface as the means of communication with the user level. | |
6 | * | |
7 | * Definitions for the IP protocol. | |
8 | * | |
9 | * Version: @(#)ip.h 1.0.2 04/28/93 | |
10 | * | |
11 | * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
1da177e4 LT |
12 | */ |
13 | #ifndef _LINUX_IP_H | |
14 | #define _LINUX_IP_H | |
1da177e4 | 15 | |
eddc9ec5 | 16 | #include <linux/skbuff.h> |
607ca46e | 17 | #include <uapi/linux/ip.h> |
eddc9ec5 ACM |
18 | |
19 | static inline struct iphdr *ip_hdr(const struct sk_buff *skb) | |
20 | { | |
21 | return (struct iphdr *)skb_network_header(skb); | |
22 | } | |
b0061ce4 | 23 | |
6a674e9c JG |
24 | static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb) |
25 | { | |
26 | return (struct iphdr *)skb_inner_network_header(skb); | |
27 | } | |
28 | ||
b0061ce4 ACM |
29 | static inline struct iphdr *ipip_hdr(const struct sk_buff *skb) |
30 | { | |
9c70220b | 31 | return (struct iphdr *)skb_transport_header(skb); |
b0061ce4 | 32 | } |
ba5ea614 LL |
33 | |
34 | static inline unsigned int ip_transport_len(const struct sk_buff *skb) | |
35 | { | |
36 | return ntohs(ip_hdr(skb)->tot_len) - skb_network_header_len(skb); | |
37 | } | |
1da177e4 | 38 | #endif /* _LINUX_IP_H */ |