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