110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions of the Internet Protocol.
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*
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* Version: @(#)in.h 1.0.1 04/21/93
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*
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* Authors: Original taken from the GNU Project <netinet/in.h> file.
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _LINUX_IN_H
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#define _LINUX_IN_H
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#include <linux/errno.h>
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#include <uapi/linux/in.h>
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static inline int proto_ports_offset(int proto)
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{
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switch (proto) {
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case IPPROTO_TCP:
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case IPPROTO_UDP:
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case IPPROTO_DCCP:
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case IPPROTO_ESP: /* SPI */
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case IPPROTO_SCTP:
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case IPPROTO_UDPLITE:
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return 0;
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case IPPROTO_AH: /* SPI */
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return 4;
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default:
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return -EINVAL;
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}
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}
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static inline bool ipv4_is_loopback(__be32 addr)
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{
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return (addr & htonl(0xff000000)) == htonl(0x7f000000);
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}
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static inline bool ipv4_is_multicast(__be32 addr)
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{
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return (addr & htonl(0xf0000000)) == htonl(0xe0000000);
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}
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static inline bool ipv4_is_local_multicast(__be32 addr)
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{
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return (addr & htonl(0xffffff00)) == htonl(0xe0000000);
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}
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static inline bool ipv4_is_lbcast(__be32 addr)
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{
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/* limited broadcast */
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return addr == htonl(INADDR_BROADCAST);
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}
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static inline bool ipv4_is_all_snoopers(__be32 addr)
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{
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return addr == htonl(INADDR_ALLSNOOPERS_GROUP);
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}
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static inline bool ipv4_is_zeronet(__be32 addr)
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{
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return (addr & htonl(0xff000000)) == htonl(0x00000000);
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}
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/* Special-Use IPv4 Addresses (RFC3330) */
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static inline bool ipv4_is_private_10(__be32 addr)
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{
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return (addr & htonl(0xff000000)) == htonl(0x0a000000);
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}
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static inline bool ipv4_is_private_172(__be32 addr)
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{
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return (addr & htonl(0xfff00000)) == htonl(0xac100000);
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}
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static inline bool ipv4_is_private_192(__be32 addr)
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{
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return (addr & htonl(0xffff0000)) == htonl(0xc0a80000);
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}
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static inline bool ipv4_is_linklocal_169(__be32 addr)
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{
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return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000);
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}
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static inline bool ipv4_is_anycast_6to4(__be32 addr)
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{
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return (addr & htonl(0xffffff00)) == htonl(0xc0586300);
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}
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static inline bool ipv4_is_test_192(__be32 addr)
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{
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return (addr & htonl(0xffffff00)) == htonl(0xc0000200);
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}
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static inline bool ipv4_is_test_198(__be32 addr)
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{
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return (addr & htonl(0xfffe0000)) == htonl(0xc6120000);
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}
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#endif /* _LINUX_IN_H */
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