178189Sbrian/*- 278189Sbrian * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> 378189Sbrian * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> 478189Sbrian * Internet Initiative Japan, Inc (IIJ) 578189Sbrian * All rights reserved. 66059Samurai * 778189Sbrian * Redistribution and use in source and binary forms, with or without 878189Sbrian * modification, are permitted provided that the following conditions 978189Sbrian * are met: 1078189Sbrian * 1. Redistributions of source code must retain the above copyright 1178189Sbrian * notice, this list of conditions and the following disclaimer. 1278189Sbrian * 2. Redistributions in binary form must reproduce the above copyright 1378189Sbrian * notice, this list of conditions and the following disclaimer in the 1478189Sbrian * documentation and/or other materials provided with the distribution. 156059Samurai * 1678189Sbrian * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1778189Sbrian * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1878189Sbrian * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1978189Sbrian * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2078189Sbrian * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2178189Sbrian * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2278189Sbrian * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2378189Sbrian * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2478189Sbrian * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2578189Sbrian * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2678189Sbrian * SUCH DAMAGE. 276059Samurai * 2850479Speter * $FreeBSD$ 296059Samurai */ 306059Samurai 316059Samuraistruct mbuf { 3254912Sbrian size_t m_size; /* size allocated (excluding header) */ 33134789Sbrian u_short m_offset; /* offset from header end to start position */ 3454912Sbrian size_t m_len; /* available byte count in buffer */ 3554912Sbrian short m_type; /* MB_* below */ 3654912Sbrian struct mbuf *m_next; /* link to next mbuf */ 3754912Sbrian struct mbuf *m_nextpkt; /* link to next packet */ 38131327Sbrian unsigned long priv; /* private data - holds HDLC escape count */ 3938472Sbrian /* buffer space is malloc()d directly after the header */ 406059Samurai}; 416059Samurai 426059Samuraistruct mqueue { 436059Samurai struct mbuf *top; 446059Samurai struct mbuf *last; 4554912Sbrian size_t len; 466059Samurai}; 476059Samurai 4846828Sbrian#define MBUF_CTOP(bp) \ 49134789Sbrian ((bp) ? (u_char *)((bp)+1) + (bp)->m_offset : (u_char *)bp) 506059Samurai 5146828Sbrian#define CONST_MBUF_CTOP(bp) \ 52134789Sbrian ((bp) ? (const u_char *)((bp)+1) + (bp)->m_offset : (const u_char *)bp) 5346828Sbrian 5447695Sbrian#define MB_IPIN 0 5547695Sbrian#define MB_IPOUT 1 5681634Sbrian#define MB_IPV6IN 2 5781634Sbrian#define MB_IPV6OUT 3 5881634Sbrian#define MB_NATIN 4 5981634Sbrian#define MB_NATOUT 5 6081634Sbrian#define MB_MPIN 6 6181634Sbrian#define MB_MPOUT 7 6281634Sbrian#define MB_VJIN 8 6381634Sbrian#define MB_VJOUT 9 6481634Sbrian#define MB_ICOMPDIN 10 6581634Sbrian#define MB_ICOMPDOUT 11 6681634Sbrian#define MB_COMPDIN 12 6781634Sbrian#define MB_COMPDOUT 13 6881634Sbrian#define MB_LQRIN 14 6981634Sbrian#define MB_LQROUT 15 7081634Sbrian#define MB_ECHOIN 16 7181634Sbrian#define MB_ECHOOUT 17 7281634Sbrian#define MB_PROTOIN 18 7381634Sbrian#define MB_PROTOOUT 19 7481634Sbrian#define MB_ACFIN 20 7581634Sbrian#define MB_ACFOUT 21 7681634Sbrian#define MB_SYNCIN 22 7781634Sbrian#define MB_SYNCOUT 23 7881634Sbrian#define MB_HDLCIN 24 7981634Sbrian#define MB_HDLCOUT 25 8081634Sbrian#define MB_ASYNCIN 26 8181634Sbrian#define MB_ASYNCOUT 27 8281634Sbrian#define MB_CBCPIN 28 8381634Sbrian#define MB_CBCPOUT 29 8481634Sbrian#define MB_CHAPIN 30 8581634Sbrian#define MB_CHAPOUT 31 8681634Sbrian#define MB_PAPIN 32 8781634Sbrian#define MB_PAPOUT 33 8881634Sbrian#define MB_CCPIN 34 8981634Sbrian#define MB_CCPOUT 35 9081634Sbrian#define MB_IPCPIN 36 9181634Sbrian#define MB_IPCPOUT 37 9281634Sbrian#define MB_IPV6CPIN 38 9381634Sbrian#define MB_IPV6CPOUT 39 9481634Sbrian#define MB_LCPIN 40 9581634Sbrian#define MB_LCPOUT 41 9681634Sbrian#define MB_UNKNOWN 42 9747695Sbrian#define MB_MAX MB_UNKNOWN 986059Samurai 9968596Sbrian#define M_MAXLEN (4352 - sizeof(struct mbuf)) /* > HDLCSIZE */ 10054913Sbrian 10136285Sbrianstruct cmdargs; 10236285Sbrian 103134789Sbrianextern size_t m_length(struct mbuf *); 10454912Sbrianextern struct mbuf *m_get(size_t, int); 10554912Sbrianextern struct mbuf *m_free(struct mbuf *); 10654912Sbrianextern void m_freem(struct mbuf *); 10746686Sbrianextern void mbuf_Write(struct mbuf *, const void *, size_t); 10846686Sbrianextern struct mbuf *mbuf_Read(struct mbuf *, void *, size_t); 10946686Sbrianextern size_t mbuf_View(struct mbuf *, void *, size_t); 110134789Sbrianextern struct mbuf *m_prepend(struct mbuf *, const void *, size_t, u_short); 11154912Sbrianextern struct mbuf *m_adj(struct mbuf *, ssize_t); 11254912Sbrianextern struct mbuf *m_pullup(struct mbuf *); 11354912Sbrianextern void m_settype(struct mbuf *, int); 11455353Sbrianextern struct mbuf *m_append(struct mbuf *, const void *, size_t); 11554912Sbrian 11636285Sbrianextern int mbuf_Show(struct cmdargs const *); 11754912Sbrian 11854912Sbrianextern void m_enqueue(struct mqueue *, struct mbuf *); 11954912Sbrianextern struct mbuf *m_dequeue(struct mqueue *); 120