in_pcb.h revision 24570 
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 *	@(#)in_pcb.h	8.1 (Berkeley) 6/10/93
34 * $Id: in_pcb.h,v 1.19 1997/03/03 09:23:34 davidg Exp $
35 */
36
37#ifndef _NETINET_IN_PCB_H_
38#define _NETINET_IN_PCB_H_
39
40#include <sys/queue.h>
41
42/*
43 * Common structure pcb for internet protocol implementation.
44 * Here are stored pointers to local and foreign host table
45 * entries, local and foreign socket numbers, and pointers
46 * up (to a socket structure) and down (to a protocol-specific)
47 * control block.
48 */
49LIST_HEAD(inpcbhead, inpcb);
50
51struct inpcb {
52	LIST_ENTRY(inpcb) inp_list;		/* list for all PCBs of this proto */
53	LIST_ENTRY(inpcb) inp_hash;		/* hash list */
54	struct	inpcbinfo *inp_pcbinfo;	/* PCB list info */
55	struct	in_addr inp_faddr;	/* foreign host table entry */
56	struct	in_addr inp_laddr;	/* local host table entry */
57	u_short	inp_fport;		/* foreign port */
58	u_short	inp_lport;		/* local port */
59	caddr_t	inp_ppcb;		/* pointer to per-protocol pcb */
60	struct	socket *inp_socket;	/* back pointer to socket */
61	struct	mbuf *inp_options;	/* IP options */
62	struct	route inp_route;	/* placeholder for routing entry */
63	int	inp_flags;		/* generic IP/datagram flags */
64	u_char	inp_ip_tos;		/* type of service proto */
65	u_char	inp_ip_ttl;		/* time to live proto */
66	u_char	inp_ip_p;		/* protocol proto */
67	u_char	pad[1];			/* alignment */
68	struct	ip_moptions *inp_moptions; /* IP multicast options */
69#if 0 /* Someday, perhaps... */
70	struct	ip inp_ip;		/* header prototype; should have more */
71#endif
72};
73
74struct inpcbinfo {
75	struct inpcbhead *listhead;
76	struct inpcbhead *hashbase;
77	unsigned long hashmask;
78	unsigned short lastport;
79	unsigned short lastlow;
80	unsigned short lasthi;
81};
82
83#define INP_PCBHASH(faddr, lport, fport, mask) \
84	(((faddr) ^ ((faddr) >> 16) ^ (lport) ^ (fport)) & (mask))
85
86/* flags in inp_flags: */
87#define	INP_RECVOPTS		0x01	/* receive incoming IP options */
88#define	INP_RECVRETOPTS		0x02	/* receive IP options for reply */
89#define	INP_RECVDSTADDR		0x04	/* receive IP dst address */
90#define	INP_HDRINCL		0x08	/* user supplies entire IP header */
91#define	INP_HIGHPORT		0x10	/* user wants "high" port binding */
92#define	INP_LOWPORT		0x20	/* user wants "low" port binding */
93#define	INP_ANONPORT		0x40	/* port chosen for user */
94#define	INP_RECVIF		0x80	/* receive incoming interface */
95#define	INP_CONTROLOPTS		(INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
96					INP_RECVIF)
97
98#define	INPLOOKUP_WILDCARD	1
99
100#define	sotoinpcb(so)	((struct inpcb *)(so)->so_pcb)
101
102#ifdef KERNEL
103void	 in_losing __P((struct inpcb *));
104int	 in_pcballoc __P((struct socket *, struct inpcbinfo *));
105int	 in_pcbbind __P((struct inpcb *, struct mbuf *));
106int	 in_pcbconnect __P((struct inpcb *, struct mbuf *));
107void	 in_pcbdetach __P((struct inpcb *));
108void	 in_pcbdisconnect __P((struct inpcb *));
109int	 in_pcbladdr __P((struct inpcb *, struct mbuf *,
110	    struct sockaddr_in **));
111struct inpcb *
112	 in_pcblookup __P((struct inpcbinfo *,
113	    struct in_addr, u_int, struct in_addr, u_int, int));
114struct inpcb *
115	 in_pcblookuphash __P((struct inpcbinfo *,
116	    struct in_addr, u_int, struct in_addr, u_int, int));
117void	 in_pcbnotify __P((struct inpcbhead *, struct sockaddr *,
118	    u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
119void	 in_pcbrehash __P((struct inpcb *));
120int	 in_setpeeraddr __P((struct socket *so, struct mbuf *nam));
121int	 in_setsockaddr __P((struct socket *so, struct mbuf *nam));
122#endif
123
124#endif
125