mbuf.h

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/******************************************************************************
 *
 *  (C)Copyright 1998,1999 SysKonnect,
 *  a business unit of Schneider & Koch & Co. Datensysteme GmbH.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

#ifndef _MBUF_
#define _MBUF_

#define M_SIZE  4504

#ifndef MAX_MBUF
#define MAX_MBUF    4
#endif

#ifndef NO_STD_MBUF
#define sm_next         m_next
#define sm_off          m_off
#define sm_len          m_len
#define sm_data         m_data
#define SMbuf           Mbuf
#define mtod        smtod
#define mtodoff     smtodoff
#endif

struct s_mbuf {
    struct s_mbuf   *sm_next ;      /* low level linked list */
    short       sm_off ;            /* offset in m_data */
    u_int       sm_len ;            /* len of data */
#ifdef  PCI
    int     sm_use_count ;
#endif
    char        sm_data[M_SIZE] ;
} ;

typedef struct s_mbuf SMbuf ;

/* mbuf head, to typed data */
#define smtod(x,t)  ((t)((x)->sm_data + (x)->sm_off))
#define smtodoff(x,t,o) ((t)((x)->sm_data + (o)))

#endif  /* _MBUF_ */