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Annotation of XNU/bsd/net/netbuf.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* 
        !            23:  * Copyright (C) 1990 by NeXT, Inc., All Rights Reserved
        !            24:  *
        !            25:  */
        !            26: 
        !            27: /* 
        !            28:  * Network Buffer API (for kernel use only)
        !            29:  *
        !            30:  * HISTORY
        !            31:  * 09-Apr-90  Bradley Taylor (btaylor) at NeXT, Inc.
        !            32:  *     Created. 
        !            33:  */
        !            34: #ifndef _NETBUF_
        !            35: #define _NETBUF_
        !            36: 
        !            37: typedef struct { char opaque[1]; } *netbuf_t;
        !            38: 
        !            39: #ifdef KERNEL
        !            40: 
        !            41: extern char *nb_map(netbuf_t nb);
        !            42: extern netbuf_t nb_alloc(unsigned size);
        !            43: extern netbuf_t nb_alloc_wrapper(void *data, unsigned size,
        !            44:                                 void freefunc(void *), void *freefunc_arg);
        !            45: 
        !            46: extern void nb_free(netbuf_t nb);
        !            47: extern void nb_free_wrapper(netbuf_t nb);
        !            48: extern unsigned nb_size(netbuf_t nb);
        !            49: extern int nb_read(netbuf_t nb, unsigned offset, unsigned size, void *target);
        !            50: extern int nb_write(netbuf_t nb, unsigned offset, unsigned size, void *source);
        !            51: extern int nb_shrink_top(netbuf_t nb, unsigned size);
        !            52: extern int nb_grow_top(netbuf_t nb, unsigned size);
        !            53: extern int nb_shrink_bot(netbuf_t nb, unsigned size);
        !            54: extern int nb_grow_bot(netbuf_t nb, unsigned size);
        !            55: 
        !            56: #endif /* KERNEL */
        !            57: #endif /* _NETBUF_ */

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