]>
git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/ip.h
1 /* SPDX-License-Identifier: GPL-2.0-or-later */
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.
7 * Definitions for the IP protocol.
9 * Version: @(#)ip.h 1.0.2 04/28/93
11 * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
16 #include <linux/skbuff.h>
17 #include <uapi/linux/ip.h>
19 static inline struct iphdr
*ip_hdr(const struct sk_buff
*skb
)
21 return (struct iphdr
*)skb_network_header(skb
);
24 static inline struct iphdr
*inner_ip_hdr(const struct sk_buff
*skb
)
26 return (struct iphdr
*)skb_inner_network_header(skb
);
29 static inline struct iphdr
*ipip_hdr(const struct sk_buff
*skb
)
31 return (struct iphdr
*)skb_transport_header(skb
);
34 static inline unsigned int ip_transport_len(const struct sk_buff
*skb
)
36 return ntohs(ip_hdr(skb
)->tot_len
) - skb_network_header_len(skb
);
38 #endif /* _LINUX_IP_H */