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2874c5fd | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
1da177e4 LT |
2 | /* |
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. | |
6 | * | |
7 | * Definitions of the Internet Protocol. | |
8 | * | |
9 | * Version: @(#)in.h 1.0.1 04/21/93 | |
10 | * | |
11 | * Authors: Original taken from the GNU Project <netinet/in.h> file. | |
12 | * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> | |
1da177e4 LT |
13 | */ |
14 | #ifndef _LINUX_IN_H | |
15 | #define _LINUX_IN_H | |
16 | ||
2658fa80 | 17 | |
e760702e | 18 | #include <linux/errno.h> |
607ca46e | 19 | #include <uapi/linux/in.h> |
e760702e CG |
20 | |
21 | static inline int proto_ports_offset(int proto) | |
22 | { | |
23 | switch (proto) { | |
24 | case IPPROTO_TCP: | |
25 | case IPPROTO_UDP: | |
26 | case IPPROTO_DCCP: | |
27 | case IPPROTO_ESP: /* SPI */ | |
28 | case IPPROTO_SCTP: | |
29 | case IPPROTO_UDPLITE: | |
30 | return 0; | |
31 | case IPPROTO_AH: /* SPI */ | |
32 | return 4; | |
33 | default: | |
34 | return -EINVAL; | |
35 | } | |
36 | } | |
37 | ||
2658fa80 JP |
38 | static inline bool ipv4_is_loopback(__be32 addr) |
39 | { | |
40 | return (addr & htonl(0xff000000)) == htonl(0x7f000000); | |
41 | } | |
42 | ||
43 | static inline bool ipv4_is_multicast(__be32 addr) | |
44 | { | |
45 | return (addr & htonl(0xf0000000)) == htonl(0xe0000000); | |
46 | } | |
47 | ||
48 | static inline bool ipv4_is_local_multicast(__be32 addr) | |
49 | { | |
50 | return (addr & htonl(0xffffff00)) == htonl(0xe0000000); | |
51 | } | |
52 | ||
1e637c74 | 53 | static inline bool ipv4_is_lbcast(__be32 addr) |
2658fa80 | 54 | { |
1e637c74 | 55 | /* limited broadcast */ |
0ff9663c | 56 | return addr == htonl(INADDR_BROADCAST); |
2658fa80 JP |
57 | } |
58 | ||
4b3087c7 LL |
59 | static inline bool ipv4_is_all_snoopers(__be32 addr) |
60 | { | |
61 | return addr == htonl(INADDR_ALLSNOOPERS_GROUP); | |
62 | } | |
63 | ||
2658fa80 JP |
64 | static inline bool ipv4_is_zeronet(__be32 addr) |
65 | { | |
96125bf9 | 66 | return (addr == 0); |
2658fa80 JP |
67 | } |
68 | ||
c7dc89c0 | 69 | /* Special-Use IPv4 Addresses (RFC3330) */ |
2658fa80 JP |
70 | |
71 | static inline bool ipv4_is_private_10(__be32 addr) | |
72 | { | |
73 | return (addr & htonl(0xff000000)) == htonl(0x0a000000); | |
74 | } | |
75 | ||
76 | static inline bool ipv4_is_private_172(__be32 addr) | |
77 | { | |
78 | return (addr & htonl(0xfff00000)) == htonl(0xac100000); | |
79 | } | |
80 | ||
81 | static inline bool ipv4_is_private_192(__be32 addr) | |
82 | { | |
83 | return (addr & htonl(0xffff0000)) == htonl(0xc0a80000); | |
84 | } | |
85 | ||
86 | static inline bool ipv4_is_linklocal_169(__be32 addr) | |
87 | { | |
88 | return (addr & htonl(0xffff0000)) == htonl(0xa9fe0000); | |
89 | } | |
90 | ||
91 | static inline bool ipv4_is_anycast_6to4(__be32 addr) | |
92 | { | |
93 | return (addr & htonl(0xffffff00)) == htonl(0xc0586300); | |
94 | } | |
95 | ||
96 | static inline bool ipv4_is_test_192(__be32 addr) | |
97 | { | |
98 | return (addr & htonl(0xffffff00)) == htonl(0xc0000200); | |
99 | } | |
100 | ||
101 | static inline bool ipv4_is_test_198(__be32 addr) | |
102 | { | |
103 | return (addr & htonl(0xfffe0000)) == htonl(0xc6120000); | |
104 | } | |
1da177e4 | 105 | #endif /* _LINUX_IN_H */ |