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