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in_pcb.h
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1997-02-28
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/* $OpenBSD: in_pcb.h,v 1.4 1997/02/28 04:03:48 angelos Exp $ */
/* $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 christos Exp $ */
/*
* 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
*/
#include <sys/queue.h>
/*
* 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 {
LIST_ENTRY(inpcb) inp_hash;
CIRCLEQ_ENTRY(inpcb) inp_queue;
struct inpcbtable *inp_table;
struct in_addr inp_faddr; /* foreign host table entry */
struct in_addr inp_laddr; /* local host table entry */
u_int16_t inp_fport; /* foreign port */
u_int16_t 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 */
u_char inp_seclevel[4]; /* Only the first 3 are used for now */
#define SL_AUTH 0 /* Authentication level */
#define SL_ESP_TRANS 1 /* ESP transport level */
#define SL_ESP_NETWORK 2 /* ESP network (encapsulation) level */
};
struct inpcbtable {
CIRCLEQ_HEAD(, inpcb) inpt_queue;
LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl;
u_long inpt_hash;
u_int16_t inpt_lastport;
};
/* 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 INP_HIGHPORT 0x10 /* user wants "high" port binding */
#define INP_LOWPORT 0x20 /* user wants "low" port binding */
#define INPLOOKUP_WILDCARD 1
#define INPLOOKUP_SETLOCAL 2
#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
#ifdef _KERNEL
void in_losing __P((struct inpcb *));
int in_pcballoc __P((struct socket *, void *));
int in_pcbbind __P((void *, struct mbuf *));
int in_pcbconnect __P((void *, struct mbuf *));
void in_pcbdetach __P((void *));
void in_pcbdisconnect __P((void *));
struct inpcb *
in_pcbhashlookup __P((struct inpcbtable *, struct in_addr,
u_int, struct in_addr, u_int));
void in_pcbinit __P((struct inpcbtable *, int));
struct inpcb *
in_pcblookup __P((struct inpcbtable *,
struct in_addr, u_int, struct in_addr, u_int, int));
void in_pcbnotify __P((struct inpcbtable *, struct sockaddr *,
u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));
void in_pcbnotifyall __P((struct inpcbtable *, struct sockaddr *,
int, void (*)(struct inpcb *, int)));
void in_pcbrehash __P((struct inpcb *));
void in_rtchange __P((struct inpcb *, int));
void in_setpeeraddr __P((struct inpcb *, struct mbuf *));
void in_setsockaddr __P((struct inpcb *, struct mbuf *));
#endif