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in_pcb.h revision 1.6 
      1 /*
      2  * Copyright (c) 1982, 1986, 1990, 1993
      3  *	The Regents of the University of California.  All rights reserved.
      4  *
      5  * Redistribution and use in source and binary forms, with or without
      6  * modification, are permitted provided that the following conditions
      7  * are met:
      8  * 1. Redistributions of source code must retain the above copyright
      9  *    notice, this list of conditions and the following disclaimer.
     10  * 2. Redistributions in binary form must reproduce the above copyright
     11  *    notice, this list of conditions and the following disclaimer in the
     12  *    documentation and/or other materials provided with the distribution.
     13  * 3. All advertising materials mentioning features or use of this software
     14  *    must display the following acknowledgement:
     15  *	This product includes software developed by the University of
     16  *	California, Berkeley and its contributors.
     17  * 4. Neither the name of the University nor the names of its contributors
     18  *    may be used to endorse or promote products derived from this software
     19  *    without specific prior written permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     31  * SUCH DAMAGE.
     32  *
     33  *	from: @(#)in_pcb.h	8.1 (Berkeley) 6/10/93
     34  *	$Id: in_pcb.h,v 1.6 1994/05/13 06:06:10 mycroft Exp $
     35  */
     36 
     37 /*
     38  * Common structure pcb for internet protocol implementation.
     39  * Here are stored pointers to local and foreign host table
     40  * entries, local and foreign socket numbers, and pointers
     41  * up (to a socket structure) and down (to a protocol-specific)
     42  * control block.
     43  */
     44 struct inpcb {
     45 	struct	inpcb *inp_next,*inp_prev;
     46 					/* pointers to other pcb's */
     47 	struct	inpcb *inp_head;	/* pointer back to chain of inpcb's
     48 					   for this protocol */
     49 	struct	in_addr inp_faddr;	/* foreign host table entry */
     50 	u_short	inp_fport;		/* foreign port */
     51 	struct	in_addr inp_laddr;	/* local host table entry */
     52 	u_short	inp_lport;		/* local port */
     53 	struct	socket *inp_socket;	/* back pointer to socket */
     54 	caddr_t	inp_ppcb;		/* pointer to per-protocol pcb */
     55 	struct	route inp_route;	/* placeholder for routing entry */
     56 	int	inp_flags;		/* generic IP/datagram flags */
     57 	struct	ip inp_ip;		/* header prototype; should have more */
     58 	struct	mbuf *inp_options;	/* IP options */
     59 	struct	ip_moptions *inp_moptions; /* IP multicast options */
     60 };
     61 
     62 /* flags in inp_flags: */
     63 #define	INP_RECVOPTS		0x01	/* receive incoming IP options */
     64 #define	INP_RECVRETOPTS		0x02	/* receive IP options for reply */
     65 #define	INP_RECVDSTADDR		0x04	/* receive IP dst address */
     66 #define	INP_CONTROLOPTS		(INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
     67 #define	INP_HDRINCL		0x08	/* user supplies entire IP header */
     68 
     69 #define	INPLOOKUP_WILDCARD	1
     70 #define	INPLOOKUP_SETLOCAL	2
     71 
     72 #define	sotoinpcb(so)	((struct inpcb *)(so)->so_pcb)
     73 
     74 #ifdef KERNEL
     75 int	 in_losing __P((struct inpcb *));
     76 int	 in_pcballoc __P((struct socket *, struct inpcb *));
     77 int	 in_pcbbind __P((struct inpcb *, struct mbuf *));
     78 int	 in_pcbconnect __P((struct inpcb *, struct mbuf *));
     79 int	 in_pcbdetach __P((struct inpcb *));
     80 int	 in_pcbdisconnect __P((struct inpcb *));
     81 struct inpcb *
     82 	 in_pcblookup __P((struct inpcb *,
     83 	    struct in_addr, u_int, struct in_addr, u_int, int));
     84 int	 in_pcbnotify __P((struct inpcb *, struct sockaddr *,
     85 	    u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
     86 void	 in_rtchange __P((struct inpcb *, int));
     87 int	 in_setpeeraddr __P((struct inpcb *, struct mbuf *));
     88 int	 in_setsockaddr __P((struct inpcb *, struct mbuf *));
     89 #endif
     90