projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * INET An implementation of the TCP/IP protocol suite for the LINUX | |
| 3 | * operating system. INET is implemented using the BSD Socket | |
| 4 | * interface as the means of communication with the user level. | |
| 5 | * | |
| 6 | * Definitions of the Internet Protocol. | |
| 7 | * | |
| 8 | * Version: @(#)in.h 1.0.1 04/21/93 | |
| 9 | * | |
| 10 | * Authors: Original taken from the GNU Project <netinet/in.h> file. | |
| 11 | * Fred N. van Kempen, <[email protected]> | |
| 12 | * | |
| 13 | * This program is free software; you can redistribute it and/or | |
| 14 | * modify it under the terms of the GNU General Public License | |
| 15 | * as published by the Free Software Foundation; either version | |
| 16 | * 2 of the License, or (at your option) any later version. | |
| 17 | */ | |
| 18 | #ifndef _LINUX_IN_H | |
| 19 | #define _LINUX_IN_H | |
| 20 | ||
| 2658fa80 | 21 | |
| e760702e | 22 | #include <linux/errno.h> |
| 607ca46e | 23 | #include <uapi/linux/in.h> |
| e760702e CG |
24 | |
| 25 | static inline int proto_ports_offset(int proto) | |
| 26 | { | |
| 27 | switch (proto) { | |
| 28 | case IPPROTO_TCP: | |
| 29 | case IPPROTO_UDP: | |
| 30 | case IPPROTO_DCCP: | |
| 31 | case IPPROTO_ESP: /* SPI */ | |
| 32 | case IPPROTO_SCTP: | |
| 33 | case IPPROTO_UDPLITE: | |
| 34 | return 0; | |
| 35 | case IPPROTO_AH: /* SPI */ | |
| 36 | return 4; | |
| 37 | default: | |
| 38 | return -EINVAL; | |
| 39 | } | |
| 40 | } | |
| 41 | ||
| 2658fa80 JP |
42 | static inline bool ipv4_is_loopback(__be32 addr) |
| 43 | { | |
| 44 | return (addr & htonl(0xff000000)) == htonl(0x7f000000); | |
| 45 | } | |
| 46 | ||
| 47 | static inline bool ipv4_is_multicast(__be32 addr) | |
| 48 | { | |
| 49 | return (addr & htonl(0xf0000000)) == htonl(0xe0000000); | |
| 50 | } | |
| 51 | ||
| 52 | static inline bool ipv4_is_local_multicast(__be32 addr) | |
| 53 | { | |
| 54 | return (addr & htonl(0xffffff00)) == htonl(0xe0000000); | |
| 55 | } | |
| 56 | ||
| 1e637c74 | 57 | static inline bool ipv4_is_lbcast(__be32 addr) |
| 2658fa80 | 58 | { |
| 1e637c74 | 59 | /* limited broadcast */ |
| 0ff9663c | 60 | return addr == htonl(INADDR_BROADCAST); |
| 2658fa80 JP |
61 | } |
| 62 | ||
| 63 | static inline bool ipv4_is_zeronet(__be32 addr) | |
| 64 | { | |
| 65 | return (addr & htonl(0xff000000)) == htonl(0x00000000); | |
| 66 | } | |
| 67 | ||
| c7dc89c0 | 68 | /* Special-Use IPv4 Addresses (RFC3330) */ |
| 2658fa80 JP |
69 | |
| 70 | static inline bool ipv4_is_private_10(__be32 addr) | |
| 71 | { | |
| 72 | return (addr & htonl(0xff000000)) == htonl(0x0a000000); | |
| 73 | } | |
| 74 | ||
| 75 | static inline bool ipv4_is_private_172(__be32 addr) | |
| 76 | { | |
| 77 | return (addr & htonl(0xfff00000)) == htonl(0xac100000); | |
| 78 | } | |
| 79 | ||
| 80 | static inline bool ipv4_is_private_192(__be32 addr) | |
| 81 | { | |
| 82 | return (addr & htonl(0xffff0000)) == htonl(0xc0a80000); | |
| 83 | } | |
| 84 | ||
| 85 | static inline bool ipv4_is_linklocal_169(__be32 addr) | |
| 86 | { | |
| 87 | return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000); | |
| 88 | } | |
| 89 | ||
| 90 | static inline bool ipv4_is_anycast_6to4(__be32 addr) | |
| 91 | { | |
| 92 | return (addr & htonl(0xffffff00)) == htonl(0xc0586300); | |
| 93 | } | |
| 94 | ||
| 95 | static inline bool ipv4_is_test_192(__be32 addr) | |
| 96 | { | |
| 97 | return (addr & htonl(0xffffff00)) == htonl(0xc0000200); | |
| 98 | } | |
| 99 | ||
| 100 | static inline bool ipv4_is_test_198(__be32 addr) | |
| 101 | { | |
| 102 | return (addr & htonl(0xfffe0000)) == htonl(0xc6120000); | |
| 103 | } | |
| 1da177e4 | 104 | #endif /* _LINUX_IN_H */ |