1139825Simp/*- 272980Sbp * Copyright (c) 2000, 2001 Boris Popov 372980Sbp * All rights reserved. 472980Sbp * 572980Sbp * Redistribution and use in source and binary forms, with or without 672980Sbp * modification, are permitted provided that the following conditions 772980Sbp * are met: 872980Sbp * 1. Redistributions of source code must retain the above copyright 972980Sbp * notice, this list of conditions and the following disclaimer. 1072980Sbp * 2. Redistributions in binary form must reproduce the above copyright 1172980Sbp * notice, this list of conditions and the following disclaimer in the 1272980Sbp * documentation and/or other materials provided with the distribution. 1372980Sbp * 1472980Sbp * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1572980Sbp * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1672980Sbp * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1772980Sbp * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 1872980Sbp * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 1972980Sbp * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2072980Sbp * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2172980Sbp * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2272980Sbp * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2372980Sbp * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2472980Sbp * SUCH DAMAGE. 2572980Sbp * 2672980Sbp * $FreeBSD$ 2772980Sbp */ 2872980Sbp#ifndef _SYS_MCHAIN_H_ 2972980Sbp#define _SYS_MCHAIN_H_ 3072980Sbp 3172980Sbp#ifdef _KERNEL 3272980Sbp 3372980Sbp/* 3472980Sbp * Type of copy for mb_{put|get}_mem() 3572980Sbp */ 3672980Sbp#define MB_MSYSTEM 0 /* use bcopy() */ 37111217Sbmilekic#define MB_MUSER 1 /* use copyin()/copyout() */ 38111217Sbmilekic#define MB_MINLINE 2 /* use an inline copy loop */ 3972980Sbp#define MB_MZERO 3 /* bzero(), mb_put_mem only */ 4072980Sbp#define MB_MCUSTOM 4 /* use an user defined function */ 4172980Sbp 4272980Sbpstruct mbuf; 4372980Sbpstruct mbchain; 4472980Sbp 45148517Simuratypedef int mb_copy_t(struct mbchain *mbp, c_caddr_t src, caddr_t dst, 46148517Simura size_t *srclen, size_t *dstlen); 4772980Sbp 4872980Sbpstruct mbchain { 4972980Sbp struct mbuf * mb_top; /* head of mbufs chain */ 5072980Sbp struct mbuf * mb_cur; /* current mbuf */ 5172980Sbp int mb_mleft; /* free space in the current mbuf */ 5272980Sbp int mb_count; /* total number of bytes */ 5372980Sbp mb_copy_t * mb_copy; /* user defined copy function */ 5472980Sbp void * mb_udata; /* user data */ 5572980Sbp}; 5672980Sbp 5772980Sbpstruct mdchain { 5872980Sbp struct mbuf * md_top; /* head of mbufs chain */ 5972980Sbp struct mbuf * md_cur; /* current mbuf */ 6072980Sbp u_char * md_pos; /* offset in the current mbuf */ 6172980Sbp}; 6272980Sbp 6372980Sbpint mb_init(struct mbchain *mbp); 6472980Sbpvoid mb_initm(struct mbchain *mbp, struct mbuf *m); 6572980Sbpvoid mb_done(struct mbchain *mbp); 6672980Sbpstruct mbuf *mb_detach(struct mbchain *mbp); 6772980Sbpint mb_fixhdr(struct mbchain *mbp); 6872980Sbpcaddr_t mb_reserve(struct mbchain *mbp, int size); 6972980Sbp 70227650Skevloint mb_put_padbyte(struct mbchain *mbp); 7172980Sbpint mb_put_uint8(struct mbchain *mbp, u_int8_t x); 7272980Sbpint mb_put_uint16be(struct mbchain *mbp, u_int16_t x); 7372980Sbpint mb_put_uint16le(struct mbchain *mbp, u_int16_t x); 7472980Sbpint mb_put_uint32be(struct mbchain *mbp, u_int32_t x); 7572980Sbpint mb_put_uint32le(struct mbchain *mbp, u_int32_t x); 7672980Sbpint mb_put_int64be(struct mbchain *mbp, int64_t x); 7772980Sbpint mb_put_int64le(struct mbchain *mbp, int64_t x); 7872980Sbpint mb_put_mem(struct mbchain *mbp, c_caddr_t source, int size, int type); 7972980Sbpint mb_put_mbuf(struct mbchain *mbp, struct mbuf *m); 8072980Sbpint mb_put_uio(struct mbchain *mbp, struct uio *uiop, int size); 8172980Sbp 8272980Sbpint md_init(struct mdchain *mdp); 8372980Sbpvoid md_initm(struct mdchain *mbp, struct mbuf *m); 8472980Sbpvoid md_done(struct mdchain *mdp); 8572980Sbpvoid md_append_record(struct mdchain *mdp, struct mbuf *top); 8672980Sbpint md_next_record(struct mdchain *mdp); 8772980Sbpint md_get_uint8(struct mdchain *mdp, u_int8_t *x); 8872980Sbpint md_get_uint16(struct mdchain *mdp, u_int16_t *x); 8972980Sbpint md_get_uint16le(struct mdchain *mdp, u_int16_t *x); 9072980Sbpint md_get_uint16be(struct mdchain *mdp, u_int16_t *x); 9172980Sbpint md_get_uint32(struct mdchain *mdp, u_int32_t *x); 9272980Sbpint md_get_uint32be(struct mdchain *mdp, u_int32_t *x); 9372980Sbpint md_get_uint32le(struct mdchain *mdp, u_int32_t *x); 9472980Sbpint md_get_int64(struct mdchain *mdp, int64_t *x); 9572980Sbpint md_get_int64be(struct mdchain *mdp, int64_t *x); 9672980Sbpint md_get_int64le(struct mdchain *mdp, int64_t *x); 9772980Sbpint md_get_mem(struct mdchain *mdp, caddr_t target, int size, int type); 9872980Sbpint md_get_mbuf(struct mdchain *mdp, int size, struct mbuf **m); 9972980Sbpint md_get_uio(struct mdchain *mdp, struct uio *uiop, int size); 10072980Sbp 10172980Sbp#endif /* ifdef _KERNEL */ 10272980Sbp 10372980Sbp#endif /* !_SYS_MCHAIN_H_ */ 104