1/****************************************************************************** 2 * 3 * (C)Copyright 1998,1999 SysKonnect, 4 * a business unit of Schneider & Koch & Co. Datensysteme GmbH. 5 * 6 * This program is free software; you can redistribute it and/or modify 7 * it under the terms of the GNU General Public License as published by 8 * the Free Software Foundation; either version 2 of the License, or 9 * (at your option) any later version. 10 * 11 * The information in this file is provided "AS IS" without warranty. 12 * 13 ******************************************************************************/ 14 15#ifndef _MBUF_ 16#define _MBUF_ 17 18#define M_SIZE 4504 19 20#ifndef MAX_MBUF 21#define MAX_MBUF 4 22#endif 23 24#ifndef NO_STD_MBUF 25#define sm_next m_next 26#define sm_off m_off 27#define sm_len m_len 28#define sm_data m_data 29#define SMbuf Mbuf 30#define mtod smtod 31#define mtodoff smtodoff 32#endif 33 34struct s_mbuf { 35 struct s_mbuf *sm_next ; /* low level linked list */ 36 short sm_off ; /* offset in m_data */ 37 u_int sm_len ; /* len of data */ 38#ifdef PCI 39 int sm_use_count ; 40#endif 41 char sm_data[M_SIZE] ; 42} ; 43 44typedef struct s_mbuf SMbuf ; 45 46/* mbuf head, to typed data */ 47#define smtod(x,t) ((t)((x)->sm_data + (x)->sm_off)) 48#define smtodoff(x,t,o) ((t)((x)->sm_data + (o))) 49 50#endif /* _MBUF_ */ 51