projects / linux-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 */ |