2 * Copyright (c) 2000, 2001 Boris Popov
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Boris Popov.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * $FreeBSD: src/sys/sys/mchain.h,v 1.1.2.1 2001/05/18 11:01:23 bp Exp $
33 * $DragonFly: src/sys/sys/mchain.h,v 1.3 2004/09/23 16:11:47 joerg Exp $
35 #ifndef _SYS_MCHAIN_H_
36 #define _SYS_MCHAIN_H_
38 #include <machine/endian.h>
41 * This macros probably belongs to the endian.h
43 #if _BYTE_ORDER == _LITTLE_ENDIAN
45 #define htoles(x) ((u_int16_t)(x))
46 #define letohs(x) ((u_int16_t)(x))
47 #define htolel(x) ((u_int32_t)(x))
48 #define letohl(x) ((u_int32_t)(x))
49 #define htoleq(x) ((int64_t)(x))
50 #define letohq(x) ((int64_t)(x))
52 #define htobes(x) (htons(x))
53 #define betohs(x) (ntohs(x))
54 #define htobel(x) (htonl(x))
55 #define betohl(x) (ntohl(x))
57 static __inline int64_t
60 return (int64_t)htonl((u_int32_t)(x >> 32)) |
61 (int64_t)htonl((u_int32_t)(x & 0xffffffff)) << 32;
64 static __inline int64_t
67 return (int64_t)ntohl((u_int32_t)(x >> 32)) |
68 (int64_t)ntohl((u_int32_t)(x & 0xffffffff)) << 32;
71 #else /* (BYTE_ORDER == LITTLE_ENDIAN) */
73 #error "Macros for Big-Endians are incomplete"
76 #define htoles(x) ((u_int16_t)(x))
77 #define letohs(x) ((u_int16_t)(x))
78 #define htolel(x) ((u_int32_t)(x))
79 #define letohl(x) ((u_int32_t)(x))
81 #endif /* (BYTE_ORDER == LITTLE_ENDIAN) */
87 * Type of copy for mb_{put|get}_mem()
89 #define MB_MSYSTEM 0 /* use bcopy() */
90 #define MB_MUSER 1 /* use copyin()/copyout() */
91 #define MB_MINLINE 2 /* use an inline copy loop */
92 #define MB_MZERO 3 /* bzero(), mb_put_mem only */
93 #define MB_MCUSTOM 4 /* use an user defined function */
98 typedef int mb_copy_t(struct mbchain *mbp, c_caddr_t src, caddr_t dst, int len);
101 struct mbuf * mb_top; /* head of mbufs chain */
102 struct mbuf * mb_cur; /* current mbuf */
103 int mb_mleft; /* free space in the current mbuf */
104 int mb_count; /* total number of bytes */
105 mb_copy_t * mb_copy; /* user defined copy function */
106 void * mb_udata; /* user data */
110 struct mbuf * md_top; /* head of mbufs chain */
111 struct mbuf * md_cur; /* current mbuf */
112 u_char * md_pos; /* offset in the current mbuf */
115 int m_fixhdr(struct mbuf *m);
117 int mb_init(struct mbchain *mbp);
118 void mb_initm(struct mbchain *mbp, struct mbuf *m);
119 void mb_done(struct mbchain *mbp);
120 struct mbuf *mb_detach(struct mbchain *mbp);
121 int mb_fixhdr(struct mbchain *mbp);
122 caddr_t mb_reserve(struct mbchain *mbp, int size);
124 int mb_put_uint8(struct mbchain *mbp, u_int8_t x);
125 int mb_put_uint16be(struct mbchain *mbp, u_int16_t x);
126 int mb_put_uint16le(struct mbchain *mbp, u_int16_t x);
127 int mb_put_uint32be(struct mbchain *mbp, u_int32_t x);
128 int mb_put_uint32le(struct mbchain *mbp, u_int32_t x);
129 int mb_put_int64be(struct mbchain *mbp, int64_t x);
130 int mb_put_int64le(struct mbchain *mbp, int64_t x);
131 int mb_put_mem(struct mbchain *mbp, c_caddr_t source, int size, int type);
132 int mb_put_mbuf(struct mbchain *mbp, struct mbuf *m);
133 int mb_put_uio(struct mbchain *mbp, struct uio *uiop, int size);
135 int md_init(struct mdchain *mdp);
136 void md_initm(struct mdchain *mbp, struct mbuf *m);
137 void md_done(struct mdchain *mdp);
138 void md_append_record(struct mdchain *mdp, struct mbuf *top);
139 int md_next_record(struct mdchain *mdp);
140 int md_get_uint8(struct mdchain *mdp, u_int8_t *x);
141 int md_get_uint16(struct mdchain *mdp, u_int16_t *x);
142 int md_get_uint16le(struct mdchain *mdp, u_int16_t *x);
143 int md_get_uint16be(struct mdchain *mdp, u_int16_t *x);
144 int md_get_uint32(struct mdchain *mdp, u_int32_t *x);
145 int md_get_uint32be(struct mdchain *mdp, u_int32_t *x);
146 int md_get_uint32le(struct mdchain *mdp, u_int32_t *x);
147 int md_get_int64(struct mdchain *mdp, int64_t *x);
148 int md_get_int64be(struct mdchain *mdp, int64_t *x);
149 int md_get_int64le(struct mdchain *mdp, int64_t *x);
150 int md_get_mem(struct mdchain *mdp, caddr_t target, int size, int type);
151 int md_get_mbuf(struct mdchain *mdp, int size, struct mbuf **m);
152 int md_get_uio(struct mdchain *mdp, struct uio *uiop, int size);
154 #endif /* ifdef _KERNEL */
156 #endif /* !_SYS_MCHAIN_H_ */