1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/****************************************************************************** 3 * 4 * (C)Copyright 1998,1999 SysKonnect, 5 * a business unit of Schneider & Koch & Co. Datensysteme GmbH. 6 * 7 * The information in this file is provided "AS IS" without warranty. 8 * 9 ******************************************************************************/ 10 11#ifndef _MBUF_ 12#define _MBUF_ 13 14#define M_SIZE 4504 15 16#ifndef MAX_MBUF 17#define MAX_MBUF 4 18#endif 19 20#ifndef NO_STD_MBUF 21#define sm_next m_next 22#define sm_off m_off 23#define sm_len m_len 24#define sm_data m_data 25#define SMbuf Mbuf 26#define mtod smtod 27#define mtodoff smtodoff 28#endif 29 30struct s_mbuf { 31 struct s_mbuf *sm_next ; /* low level linked list */ 32 short sm_off ; /* offset in m_data */ 33 u_int sm_len ; /* len of data */ 34#ifdef PCI 35 int sm_use_count ; 36#endif 37 char sm_data[M_SIZE] ; 38} ; 39 40typedef struct s_mbuf SMbuf ; 41 42/* mbuf head, to typed data */ 43#define smtod(x,t) ((t)((x)->sm_data + (x)->sm_off)) 44#define smtodoff(x,t,o) ((t)((x)->sm_data + (o))) 45 46#endif /* _MBUF_ */ 47