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Annotation of kernel/bsd/net/netbuf.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
                      3:  *
                      4:  * @APPLE_LICENSE_HEADER_START@
                      5:  * 
                      6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
                      7:  * Reserved.  This file contains Original Code and/or Modifications of
                      8:  * Original Code as defined in and that are subject to the Apple Public
                      9:  * Source License Version 1.1 (the "License").  You may not use this file
                     10:  * except in compliance with the License.  Please obtain a copy of the
                     11:  * License at http://www.apple.com/publicsource and read it before using
                     12:  * this file.
                     13:  * 
                     14:  * The Original Code and all software distributed under the License are
                     15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
                     16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
                     17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
                     18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
                     19:  * License for the specific language governing rights and limitations
                     20:  * under the License.
                     21:  * 
                     22:  * @APPLE_LICENSE_HEADER_END@
                     23:  */
                     24: 
                     25: /* 
                     26:  * Copyright (C) 1990 by NeXT, Inc., All Rights Reserved
                     27:  *
                     28:  */
                     29: 
                     30: /* 
                     31:  * Network Buffer API (for kernel use only)
                     32:  *
                     33:  * HISTORY
                     34:  * 09-Apr-90  Bradley Taylor (btaylor) at NeXT, Inc.
                     35:  *     Created. 
                     36:  */
                     37: #ifndef _NETBUF_
                     38: #define _NETBUF_
                     39: 
                     40: typedef struct { char opaque[1]; } *netbuf_t;
                     41: 
                     42: #ifdef KERNEL
                     43: 
                     44: extern char *nb_map(netbuf_t nb);
                     45: extern netbuf_t nb_alloc(unsigned size);
                     46: extern netbuf_t nb_alloc_wrapper(void *data, unsigned size,
                     47:                                 void freefunc(void *), void *freefunc_arg);
                     48: 
                     49: extern void nb_free(netbuf_t nb);
                     50: extern void nb_free_wrapper(netbuf_t nb);
                     51: extern unsigned nb_size(netbuf_t nb);
                     52: extern int nb_read(netbuf_t nb, unsigned offset, unsigned size, void *target);
                     53: extern int nb_write(netbuf_t nb, unsigned offset, unsigned size, void *source);
                     54: extern int nb_shrink_top(netbuf_t nb, unsigned size);
                     55: extern int nb_grow_top(netbuf_t nb, unsigned size);
                     56: extern int nb_shrink_bot(netbuf_t nb, unsigned size);
                     57: extern int nb_grow_bot(netbuf_t nb, unsigned size);
                     58: 
                     59: #endif /* KERNEL */
                     60: #endif /* _NETBUF_ */

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