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37 lines
1011 B
C
37 lines
1011 B
C
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/*
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* Copyright (C) 1990 by NeXT, Inc., All Rights Reserved
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*
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*/
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/*
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* Network Buffer API (for kernel use only)
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*
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* HISTORY
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* 09-Apr-90 Bradley Taylor (btaylor) at NeXT, Inc.
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* Created.
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*/
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#ifndef _NETBUF_
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#define _NETBUF_
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typedef struct { char opaque[1]; } *netbuf_t;
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#ifdef KERNEL
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extern char *nb_map(netbuf_t nb);
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extern netbuf_t nb_alloc(unsigned size);
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extern netbuf_t nb_alloc_wrapper(void *data, unsigned size,
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void freefunc(void *), void *freefunc_arg);
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extern void nb_free(netbuf_t nb);
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extern void nb_free_wrapper(netbuf_t nb);
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extern unsigned nb_size(netbuf_t nb);
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extern int nb_read(netbuf_t nb, unsigned offset, unsigned size, void *target);
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extern int nb_write(netbuf_t nb, unsigned offset, unsigned size, void *source);
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extern int nb_shrink_top(netbuf_t nb, unsigned size);
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extern int nb_grow_top(netbuf_t nb, unsigned size);
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extern int nb_shrink_bot(netbuf_t nb, unsigned size);
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extern int nb_grow_bot(netbuf_t nb, unsigned size);
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#endif /* KERNEL */
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#endif /* _NETBUF_ */
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