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