date and time created 88/12/14 15:29:27 by sklower

[unix-history] / usr / src / sys / netinet / in_pcb.h

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 *	@(#)in_pcb.h	7.3 (Berkeley) %G%
 */

/*
 * Common structure pcb for internet protocol implementation.
 * Here are stored pointers to local and foreign host table
 * entries, local and foreign socket numbers, and pointers
 * up (to a socket structure) and down (to a protocol-specific)
 * control block.
 */
struct inpcb {
	struct	inpcb *inp_next,*inp_prev;
					/* pointers to other pcb's */
	struct	inpcb *inp_head;	/* pointer back to chain of inpcb's
					   for this protocol */
	struct	in_addr inp_faddr;	/* foreign host table entry */
	u_short	inp_fport;		/* foreign port */
	struct	in_addr inp_laddr;	/* local host table entry */
	u_short	inp_lport;		/* local port */
	struct	socket *inp_socket;	/* back pointer to socket */
	caddr_t	inp_ppcb;		/* pointer to per-protocol pcb */
	struct	route inp_route;	/* placeholder for routing entry */
	struct	mbuf *inp_options;	/* IP options */
};

#define	INPLOOKUP_WILDCARD	1
#define	INPLOOKUP_SETLOCAL	2

#define	sotoinpcb(so)	((struct inpcb *)(so)->so_pcb)

#ifdef KERNEL
struct	inpcb *in_pcblookup();
#endif