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mchain.h
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mchain.h
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/*
* Copyright (c) 2000, 2001 Boris Popov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Boris Popov.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: src/sys/sys/mchain.h,v 1.1.2.1 2001/05/18 11:01:23 bp Exp $
*/
#ifndef _SYS_MCHAIN_H_
#define _SYS_MCHAIN_H_
#ifndef _SYS_TYPES_H_
#include <sys/types.h>
#endif
#include <machine/endian.h>
/*
* This macros probably belongs to the endian.h
*/
#if _BYTE_ORDER == _LITTLE_ENDIAN
#define htoles(x) ((u_int16_t)(x))
#define letohs(x) ((u_int16_t)(x))
#define htolel(x) ((u_int32_t)(x))
#define letohl(x) ((u_int32_t)(x))
#define htoleq(x) ((int64_t)(x))
#define letohq(x) ((int64_t)(x))
#define htobes(x) (__htons(x))
#define betohs(x) (__ntohs(x))
#define htobel(x) (__htonl(x))
#define betohl(x) (__ntohl(x))
static __inline int64_t
htobeq(int64_t x)
{
return (int64_t)__htonl((u_int32_t)(x >> 32)) |
(int64_t)__htonl((u_int32_t)(x & 0xffffffff)) << 32;
}
static __inline int64_t
betohq(int64_t x)
{
return (int64_t)__ntohl((u_int32_t)(x >> 32)) |
(int64_t)__ntohl((u_int32_t)(x & 0xffffffff)) << 32;
}
#else /* (BYTE_ORDER == LITTLE_ENDIAN) */
#error "Macros for Big-Endians are incomplete"
/*
#define htoles(x) ((u_int16_t)(x))
#define letohs(x) ((u_int16_t)(x))
#define htolel(x) ((u_int32_t)(x))
#define letohl(x) ((u_int32_t)(x))
*/
#endif /* (BYTE_ORDER == LITTLE_ENDIAN) */
#ifdef _KERNEL
/*
* Type of copy for mb_{put|get}_mem()
*/
#define MB_MSYSTEM 0 /* use bcopy() */
#define MB_MUSER 1 /* use copyin()/copyout() */
#define MB_MINLINE 2 /* use an inline copy loop */
#define MB_MZERO 3 /* bzero(), mb_put_mem only */
#define MB_MCUSTOM 4 /* use an user defined function */
struct mbuf;
struct mbchain;
struct uio;
typedef int mb_copy_t(struct mbchain *mbp, c_caddr_t src, caddr_t dst, size_t len);
struct mbchain {
struct mbuf * mb_top; /* head of mbufs chain */
struct mbuf * mb_cur; /* current mbuf */
int mb_mleft; /* free space in the current mbuf */
int mb_count; /* total number of bytes */
mb_copy_t * mb_copy; /* user defined copy function */
void * mb_udata; /* user data */
};
struct mdchain {
struct mbuf * md_top; /* head of mbufs chain */
struct mbuf * md_cur; /* current mbuf */
u_char * md_pos; /* offset in the current mbuf */
};
int m_fixhdr(struct mbuf *m);
int mb_init(struct mbchain *mbp);
void mb_initm(struct mbchain *mbp, struct mbuf *m);
void mb_done(struct mbchain *mbp);
struct mbuf *mb_detach(struct mbchain *mbp);
int mb_fixhdr(struct mbchain *mbp);
caddr_t mb_reserve(struct mbchain *mbp, int size);
int mb_put_uint8(struct mbchain *mbp, u_int8_t x);
int mb_put_uint16be(struct mbchain *mbp, u_int16_t x);
int mb_put_uint16le(struct mbchain *mbp, u_int16_t x);
int mb_put_uint32be(struct mbchain *mbp, u_int32_t x);
int mb_put_uint32le(struct mbchain *mbp, u_int32_t x);
int mb_put_int64be(struct mbchain *mbp, int64_t x);
int mb_put_int64le(struct mbchain *mbp, int64_t x);
int mb_put_mem(struct mbchain *mbp, c_caddr_t source, int size, int type);
int mb_put_mbuf(struct mbchain *mbp, struct mbuf *m);
int mb_put_uio(struct mbchain *mbp, struct uio *uiop, int size);
int md_init(struct mdchain *mdp);
void md_initm(struct mdchain *mbp, struct mbuf *m);
void md_done(struct mdchain *mdp);
void md_append_record(struct mdchain *mdp, struct mbuf *top);
int md_next_record(struct mdchain *mdp);
int md_get_uint8(struct mdchain *mdp, u_int8_t *x);
int md_get_uint16(struct mdchain *mdp, u_int16_t *x);
int md_get_uint16le(struct mdchain *mdp, u_int16_t *x);
int md_get_uint16be(struct mdchain *mdp, u_int16_t *x);
int md_get_uint32(struct mdchain *mdp, u_int32_t *x);
int md_get_uint32be(struct mdchain *mdp, u_int32_t *x);
int md_get_uint32le(struct mdchain *mdp, u_int32_t *x);
int md_get_int64(struct mdchain *mdp, int64_t *x);
int md_get_int64be(struct mdchain *mdp, int64_t *x);
int md_get_int64le(struct mdchain *mdp, int64_t *x);
int md_get_mem(struct mdchain *mdp, caddr_t target, int size, int type);
int md_get_mbuf(struct mdchain *mdp, int size, struct mbuf **m);
int md_get_uio(struct mdchain *mdp, struct uio *uiop, int size);
#endif /* ifdef _KERNEL */
#endif /* !_SYS_MCHAIN_H_ */