/* * 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 $ * $DragonFly: src/sys/sys/mchain.h,v 1.4 2006/05/20 02:42:13 dillon Exp $ */ #ifndef _SYS_MCHAIN_H_ #define _SYS_MCHAIN_H_ #ifndef _SYS_TYPES_H_ #include #endif #ifndef _MACHINE_ENDIAN_H_ #include #endif /* * 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, int 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_ */