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 30 struct 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 40 typedef 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