-/*
- * 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_
-
-/*
- * We know only that the first entry in the structure is a
- * pointer that isn't used while the netbuf is allocated.
- * (that is, until an nb_free() or an inet_queue() of course!)
- */
-typedef struct netbuf { struct netbuf *m_nextpkt; } *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_ */