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/* 
 * Copyright (c) 1982, 1986, 1990, 1993 
 *	The Regents of the University of California.  All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. All advertising materials mentioning features or use of this software 
 *    must display the following acknowledgement: 
 *	This product includes software developed by the University of 
 *	California, Berkeley and its contributors. 
 * 4. Neither the name of the University nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 * 
 *	@(#)in_pcb.h	8.1 (Berkeley) 6/10/93 
 */ 
 
/* 
 * 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 */ 
	int	inp_flags;		/* generic IP/datagram flags */ 
	struct	ip inp_ip;		/* header prototype; should have more */ 
	struct	mbuf *inp_options;	/* IP options */ 
	struct	ip_moptions *inp_moptions; /* IP multicast options */ 
}; 
 
/* flags in inp_flags: */ 
#define	INP_RECVOPTS		0x01	/* receive incoming IP options */ 
#define	INP_RECVRETOPTS		0x02	/* receive IP options for reply */ 
#define	INP_RECVDSTADDR		0x04	/* receive IP dst address */ 
#define	INP_CONTROLOPTS		(INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR) 
#define	INP_HDRINCL		0x08	/* user supplies entire IP header */ 
 
#define	INPLOOKUP_WILDCARD	1 
#define	INPLOOKUP_SETLOCAL	2 
 
#define	sotoinpcb(so)	((struct inpcb *)(so)->so_pcb) 
 
#ifdef KERNEL 
int	 in_losing __P((struct inpcb *)); 
int	 in_pcballoc __P((struct socket *, struct inpcb *)); 
int	 in_pcbbind __P((struct inpcb *, struct mbuf *)); 
int	 in_pcbconnect __P((struct inpcb *, struct mbuf *)); 
int	 in_pcbdetach __P((struct inpcb *)); 
int	 in_pcbdisconnect __P((struct inpcb *)); 
struct inpcb * 
	 in_pcblookup __P((struct inpcb *, 
	    struct in_addr, u_int, struct in_addr, u_int, int)); 
int	 in_pcbnotify __P((struct inpcb *, struct sockaddr *, 
	    u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int))); 
void	 in_rtchange __P((struct inpcb *, int)); 
int	 in_setpeeraddr __P((struct inpcb *, struct mbuf *)); 
int	 in_setsockaddr __P((struct inpcb *, struct mbuf *)); 
#endif