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105 lines
2.3 KiB
105 lines
2.3 KiB
/* SPDX-License-Identifier: GPL-2.0-or-later */ |
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/* |
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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, <[email protected]> |
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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 == 0); |
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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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