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in_pcb.h revision 1.16 
      1 /*	$NetBSD: in_pcb.h,v 1.16 1996/09/09 14:51:13 mycroft Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1982, 1986, 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)in_pcb.h	8.1 (Berkeley) 6/10/93
     36  */
     37 
     38 #include <sys/queue.h>
     39 
     40 /*
     41  * Common structure pcb for internet protocol implementation.
     42  * Here are stored pointers to local and foreign host table
     43  * entries, local and foreign socket numbers, and pointers
     44  * up (to a socket structure) and down (to a protocol-specific)
     45  * control block.
     46  */
     47 struct inpcb {
     48 	LIST_ENTRY(inpcb) inp_hash;
     49 	CIRCLEQ_ENTRY(inpcb) inp_queue;
     50 	struct	  inpcbtable *inp_table;
     51 	struct	  in_addr inp_faddr;	/* foreign host table entry */
     52 	struct	  in_addr inp_laddr;	/* local host table entry */
     53 	u_int16_t inp_fport;		/* foreign port */
     54 	u_int16_t inp_lport;		/* local port */
     55 	struct	  socket *inp_socket;	/* back pointer to socket */
     56 	caddr_t	  inp_ppcb;		/* pointer to per-protocol pcb */
     57 	struct	  route inp_route;	/* placeholder for routing entry */
     58 	int	  inp_flags;		/* generic IP/datagram flags */
     59 	struct	  ip inp_ip;		/* header prototype; should have more */
     60 	struct	  mbuf *inp_options;	/* IP options */
     61 	struct	  ip_moptions *inp_moptions; /* IP multicast options */
     62 };
     63 
     64 struct inpcbtable {
     65 	CIRCLEQ_HEAD(, inpcb) inpt_queue;
     66 	LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl;
     67 	u_long	  inpt_hash;
     68 	u_int16_t inpt_lastport;
     69 };
     70 
     71 /* flags in inp_flags: */
     72 #define	INP_RECVOPTS		0x01	/* receive incoming IP options */
     73 #define	INP_RECVRETOPTS		0x02	/* receive IP options for reply */
     74 #define	INP_RECVDSTADDR		0x04	/* receive IP dst address */
     75 #define	INP_CONTROLOPTS		(INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR)
     76 #define	INP_HDRINCL		0x08	/* user supplies entire IP header */
     77 
     78 #define	INPLOOKUP_WILDCARD	1
     79 #define	INPLOOKUP_SETLOCAL	2
     80 
     81 #define	sotoinpcb(so)		((struct inpcb *)(so)->so_pcb)
     82 
     83 #ifdef _KERNEL
     84 void	 in_losing __P((struct inpcb *));
     85 int	 in_pcballoc __P((struct socket *, void *));
     86 int	 in_pcbbind __P((void *, struct mbuf *, struct proc *));
     87 int	 in_pcbconnect __P((void *, struct mbuf *));
     88 void	 in_pcbdetach __P((void *));
     89 void	 in_pcbdisconnect __P((void *));
     90 struct inpcb *
     91 	 in_pcbhashlookup __P((struct inpcbtable *,
     92 	    struct in_addr, u_int, struct in_addr, u_int));
     93 void	 in_pcbinit __P((struct inpcbtable *, int));
     94 struct inpcb *
     95 	 in_pcblookup __P((struct inpcbtable *,
     96 	    struct in_addr, u_int, struct in_addr, u_int, int));
     97 void	 in_pcbnotify __P((struct inpcbtable *, struct in_addr, u_int,
     98 	    struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
     99 void	 in_pcbnotifyall __P((struct inpcbtable *, struct in_addr, int,
    100 	    void (*)(struct inpcb *, int)));
    101 void	 in_pcbrehash __P((struct inpcb *));
    102 void	 in_rtchange __P((struct inpcb *, int));
    103 void	 in_setpeeraddr __P((struct inpcb *, struct mbuf *));
    104 void	 in_setsockaddr __P((struct inpcb *, struct mbuf *));
    105 #endif
    106