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Diffstat (limited to 'src/mbuf.h')
| -rw-r--r-- | src/mbuf.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/src/mbuf.h b/src/mbuf.h new file mode 100644 index 0000000..abc7c06 --- /dev/null +++ b/src/mbuf.h @@ -0,0 +1,119 @@ +/*- + * Copyright (c) 1996 - 2001 Brian Somers <brian@Awfulhak.org> + * based on work by Toshiharu OHNO <tony-o@iij.ad.jp> + * Internet Initiative Japan, Inc (IIJ) + * 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. + * + * 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/usr.sbin/ppp/mbuf.h,v 1.29.26.1 2010/12/21 17:10:29 kensmith Exp $ + */ + +struct mbuf { + size_t m_size; /* size allocated (excluding header) */ + u_short m_offset; /* offset from header end to start position */ + size_t m_len; /* available byte count in buffer */ + short m_type; /* MB_* below */ + struct mbuf *m_next; /* link to next mbuf */ + struct mbuf *m_nextpkt; /* link to next packet */ + unsigned long priv; /* private data - holds HDLC escape count */ + /* buffer space is malloc()d directly after the header */ +}; + +struct mqueue { + struct mbuf *top; + struct mbuf *last; + size_t len; +}; + +#define MBUF_CTOP(bp) \ + ((bp) ? (u_char *)((bp)+1) + (bp)->m_offset : (u_char *)bp) + +#define CONST_MBUF_CTOP(bp) \ + ((bp) ? (const u_char *)((bp)+1) + (bp)->m_offset : (const u_char *)bp) + +#define MB_IPIN 0 +#define MB_IPOUT 1 +#define MB_IPV6IN 2 +#define MB_IPV6OUT 3 +#define MB_NATIN 4 +#define MB_NATOUT 5 +#define MB_MPIN 6 +#define MB_MPOUT 7 +#define MB_VJIN 8 +#define MB_VJOUT 9 +#define MB_ICOMPDIN 10 +#define MB_ICOMPDOUT 11 +#define MB_COMPDIN 12 +#define MB_COMPDOUT 13 +#define MB_LQRIN 14 +#define MB_LQROUT 15 +#define MB_ECHOIN 16 +#define MB_ECHOOUT 17 +#define MB_PROTOIN 18 +#define MB_PROTOOUT 19 +#define MB_ACFIN 20 +#define MB_ACFOUT 21 +#define MB_SYNCIN 22 +#define MB_SYNCOUT 23 +#define MB_HDLCIN 24 +#define MB_HDLCOUT 25 +#define MB_ASYNCIN 26 +#define MB_ASYNCOUT 27 +#define MB_CBCPIN 28 +#define MB_CBCPOUT 29 +#define MB_CHAPIN 30 +#define MB_CHAPOUT 31 +#define MB_PAPIN 32 +#define MB_PAPOUT 33 +#define MB_CCPIN 34 +#define MB_CCPOUT 35 +#define MB_IPCPIN 36 +#define MB_IPCPOUT 37 +#define MB_IPV6CPIN 38 +#define MB_IPV6CPOUT 39 +#define MB_LCPIN 40 +#define MB_LCPOUT 41 +#define MB_UNKNOWN 42 +#define MB_MAX MB_UNKNOWN + +#define M_MAXLEN (4352 - sizeof(struct mbuf)) /* > HDLCSIZE */ + +struct cmdargs; + +extern size_t m_length(struct mbuf *); +extern struct mbuf *m_get(size_t, int); +extern struct mbuf *m_free(struct mbuf *); +extern void m_freem(struct mbuf *); +extern void mbuf_Write(struct mbuf *, const void *, size_t); +extern struct mbuf *mbuf_Read(struct mbuf *, void *, size_t); +extern size_t mbuf_View(struct mbuf *, void *, size_t); +extern struct mbuf *m_prepend(struct mbuf *, const void *, size_t, u_short); +extern struct mbuf *m_adj(struct mbuf *, ssize_t); +extern struct mbuf *m_pullup(struct mbuf *); +extern void m_settype(struct mbuf *, int); +extern struct mbuf *m_append(struct mbuf *, const void *, size_t); + +extern int mbuf_Show(struct cmdargs const *); + +extern void m_enqueue(struct mqueue *, struct mbuf *); +extern struct mbuf *m_dequeue(struct mqueue *); |