This source file includes following definitions.
- __ntohl
- __constant_ntohl
- __ntohs
- __constant_ntohs
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18 #ifndef _LINUX_IN_H
19 #define _LINUX_IN_H
20
21
22
23 enum {
24 IPPROTO_IP = 0,
25 IPPROTO_ICMP = 1,
26 IPPROTO_IGMP = 2,
27 IPPROTO_TCP = 6,
28 IPPROTO_EGP = 8,
29 IPPROTO_PUP = 12,
30 IPPROTO_UDP = 17,
31 IPPROTO_IDP = 22,
32
33 IPPROTO_RAW = 255,
34 IPPROTO_MAX
35 };
36
37
38
39 struct in_addr {
40 unsigned long int s_addr;
41 };
42
43
44
45 struct ip_mreq
46 {
47 struct in_addr imr_multiaddr;
48 struct in_addr imr_interface;
49 };
50
51
52
53 #define __SOCK_SIZE__ 16
54 struct sockaddr_in {
55 short int sin_family;
56 unsigned short int sin_port;
57 struct in_addr sin_addr;
58
59
60 unsigned char __pad[__SOCK_SIZE__ - sizeof(short int) -
61 sizeof(unsigned short int) - sizeof(struct in_addr)];
62 };
63 #define sin_zero __pad
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69
70
71 #define IN_CLASSA(a) ((((long int) (a)) & 0x80000000) == 0)
72 #define IN_CLASSA_NET 0xff000000
73 #define IN_CLASSA_NSHIFT 24
74 #define IN_CLASSA_HOST (0xffffffff & ~IN_CLASSA_NET)
75 #define IN_CLASSA_MAX 128
76
77 #define IN_CLASSB(a) ((((long int) (a)) & 0xc0000000) == 0x80000000)
78 #define IN_CLASSB_NET 0xffff0000
79 #define IN_CLASSB_NSHIFT 16
80 #define IN_CLASSB_HOST (0xffffffff & ~IN_CLASSB_NET)
81 #define IN_CLASSB_MAX 65536
82
83 #define IN_CLASSC(a) ((((long int) (a)) & 0xc0000000) == 0xc0000000)
84 #define IN_CLASSC_NET 0xffffff00
85 #define IN_CLASSC_NSHIFT 8
86 #define IN_CLASSC_HOST (0xffffffff & ~IN_CLASSC_NET)
87
88 #define IN_CLASSD(a) ((((long int) (a)) & 0xf0000000) == 0xe0000000)
89 #define IN_MULTICAST(a) IN_CLASSD(a)
90
91 #define IN_EXPERIMENTAL(a) ((((long int) (a)) & 0xe0000000) == 0xe0000000)
92 #define IN_BADCLASS(a) ((((long int) (a)) & 0xf0000000) == 0xf0000000)
93
94
95 #define INADDR_ANY ((unsigned long int) 0x00000000)
96
97
98 #define INADDR_BROADCAST ((unsigned long int) 0xffffffff)
99
100
101 #define INADDR_NONE 0xffffffff
102
103
104 #define IN_LOOPBACKNET 127
105
106
107 #define INADDR_LOOPBACK 0x7f000001
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112
113
114
115 #if 0
116 # define IP_OPTIONS 1
117 #endif
118 #define IP_HDRINCL 2
119
120
121
122 #undef ntohl
123 #undef ntohs
124 #undef htonl
125 #undef htons
126
127 extern unsigned long int ntohl(unsigned long int);
128 extern unsigned short int ntohs(unsigned short int);
129 extern unsigned long int htonl(unsigned long int);
130 extern unsigned short int htons(unsigned short int);
131
132 extern __inline__ unsigned long int
133 __ntohl(unsigned long int x)
134 {
135 __asm__("xchgb %b0,%h0\n\t"
136 "rorl $16,%0\n\t"
137 "xchgb %b0,%h0"
138 :"=q" (x)
139 : "0" (x));
140 return x;
141 }
142
143 extern __inline__ unsigned long int
144 __constant_ntohl(unsigned long int x)
145 {
146 return (((x & 0x000000ffU) << 24) |
147 ((x & 0x0000ff00U) << 8) |
148 ((x & 0x00ff0000U) >> 8) |
149 ((x & 0xff000000U) >> 24));
150 }
151
152 extern __inline__ unsigned short int
153 __ntohs(unsigned short int x)
154 {
155 __asm__("xchgb %b0,%h0"
156 : "=q" (x)
157 : "0" (x));
158 return x;
159 }
160
161 extern __inline__ unsigned short int
162 __constant_ntohs(unsigned short int x)
163 {
164 return (((x & 0x00ff) << 8) |
165 ((x & 0xff00) >> 8));
166 }
167
168 #define __htonl(x) __ntohl(x)
169 #define __htons(x) __ntohs(x)
170 #define __constant_htonl(x) __constant_ntohl(x)
171 #define __constant_htons(x) __constant_ntohs(x)
172
173 #ifdef __OPTIMIZE__
174 # define ntohl(x) \
175 (__builtin_constant_p((long)(x)) ? \
176 __constant_ntohl((x)) : \
177 __ntohl((x)))
178 # define ntohs(x) \
179 (__builtin_constant_p((short)(x)) ? \
180 __constant_ntohs((x)) : \
181 __ntohs((x)))
182 # define htonl(x) \
183 (__builtin_constant_p((long)(x)) ? \
184 __constant_htonl((x)) : \
185 __htonl((x)))
186 # define htons(x) \
187 (__builtin_constant_p((short)(x)) ? \
188 __constant_htons((x)) : \
189 __htons((x)))
190 #endif
191
192 #endif