120 lines
3.9 KiB
C
120 lines
3.9 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
struct mbuf {
|
|
size_t m_size; /* size allocated (excluding header) */
|
|
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 : NULL)
|
|
|
|
#define CONST_MBUF_CTOP(bp) \
|
|
((bp) ? (const u_char *)((bp)+1) + (bp)->m_offset : NULL)
|
|
|
|
#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 int 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, size_t);
|
|
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 *);
|