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NetBSD/sys/netinet/in_pcb.h

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/* $NetBSD: in_pcb.h,v 1.69 2020/09/08 14:12:57 christos Exp $ */
/*
* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
* 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. Neither the name of the project 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 PROJECT 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 PROJECT 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.
*/
/*
* 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. 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
*/
#ifndef _NETINET_IN_PCB_H_
#define _NETINET_IN_PCB_H_
#include <sys/types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_pcb_hdr.h>
#include <netinet/ip.h>
struct ip_moptions;
struct mbuf;
/*
* 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_hdr inp_head;
#define inp_hash inp_head.inph_hash
#define inp_queue inp_head.inph_queue
#define inp_af inp_head.inph_af
#define inp_ppcb inp_head.inph_ppcb
#define inp_state inp_head.inph_state
#define inp_portalgo inp_head.inph_portalgo
#define inp_socket inp_head.inph_socket
#define inp_table inp_head.inph_table
#define inp_sp inp_head.inph_sp
struct route inp_route; /* placeholder for routing entry */
u_int16_t inp_fport; /* foreign port */
u_int16_t inp_lport; /* local port */
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 */
int inp_errormtu; /* MTU of last xmit status = EMSGSIZE */
uint8_t inp_ip_minttl;
bool inp_bindportonsend;
struct in_addr inp_prefsrcip; /* preferred src IP when wild */
pcb_overudp_cb_t inp_overudp_cb;
void *inp_overudp_arg;
};
#define inp_faddr inp_ip.ip_dst
#define inp_laddr inp_ip.ip_src
/* flags in inp_flags: */
#define INP_RECVOPTS 0x0001 /* receive incoming IP options */
#define INP_RECVRETOPTS 0x0002 /* receive IP options for reply */
#define INP_RECVDSTADDR 0x0004 /* receive IP dst address */
#define INP_HDRINCL 0x0008 /* user supplies entire IP header */
#define INP_HIGHPORT 0x0010 /* (unused; FreeBSD compat) */
#define INP_LOWPORT 0x0020 /* user wants "low" port binding */
#define INP_ANONPORT 0x0040 /* port chosen for user */
#define INP_RECVIF 0x0080 /* receive incoming interface */
/* XXX should move to an UDP control block */
#define INP_ESPINUDP 0x0100 /* ESP over UDP for NAT-T */
#define INP_ESPINUDP_NON_IKE 0x0200 /* ESP over UDP for NAT-T */
#define INP_NOHEADER 0x0400 /* Kernel removes IP header
* before feeding a packet
* to the raw socket user.
* The socket user will
* not supply an IP header.
* Cancels INP_HDRINCL.
*/
#define INP_RECVTTL 0x0800 /* receive incoming IP TTL */
#define INP_RECVPKTINFO 0x1000 /* receive IP dst if/addr */
#define INP_BINDANY 0x2000 /* allow bind to any address */
#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
INP_RECVIF|INP_RECVTTL|INP_RECVPKTINFO)
#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
#define inp_lock(inp) solock((inp)->inp_socket)
#define inp_unlock(inp) sounlock((inp)->inp_socket)
#define inp_locked(inp) solocked((inp)->inp_socket)
#ifdef _KERNEL
#include <sys/kauth.h>
#include <sys/queue.h>
struct inpcbtable;
struct lwp;
struct rtentry;
struct sockaddr_in;
struct socket;
struct vestigial_inpcb;
void in_losing(struct inpcb *);
int in_pcballoc(struct socket *, void *);
int in_pcbbindableaddr(const struct inpcb *, struct sockaddr_in *,
kauth_cred_t);
int in_pcbbind(void *, struct sockaddr_in *, struct lwp *);
int in_pcbconnect(void *, struct sockaddr_in *, struct lwp *);
void in_pcbdetach(void *);
void in_pcbdisconnect(void *);
void in_pcbinit(struct inpcbtable *, int, int);
struct inpcb *
in_pcblookup_port(struct inpcbtable *,
struct in_addr, u_int, int, struct vestigial_inpcb *);
struct inpcb *
in_pcblookup_bind(struct inpcbtable *,
struct in_addr, u_int);
struct inpcb *
in_pcblookup_connect(struct inpcbtable *,
struct in_addr, u_int, struct in_addr, u_int,
struct vestigial_inpcb *);
int in_pcbnotify(struct inpcbtable *, struct in_addr, u_int,
struct in_addr, u_int, int, void (*)(struct inpcb *, int));
void in_pcbnotifyall(struct inpcbtable *, struct in_addr, int,
void (*)(struct inpcb *, int));
void in_pcbpurgeif0(struct inpcbtable *, struct ifnet *);
void in_pcbpurgeif(struct inpcbtable *, struct ifnet *);
void in_purgeifmcast(struct ip_moptions *, struct ifnet *);
void in_pcbstate(struct inpcb *, int);
void in_rtchange(struct inpcb *, int);
void in_setpeeraddr(struct inpcb *, struct sockaddr_in *);
void in_setsockaddr(struct inpcb *, struct sockaddr_in *);
struct rtentry *
in_pcbrtentry(struct inpcb *);
void in_pcbrtentry_unref(struct rtentry *, struct inpcb *);
static inline void
in_pcb_register_overudp_cb(struct inpcb *inp, pcb_overudp_cb_t cb, void *arg)
{
inp->inp_overudp_cb = cb;
inp->inp_overudp_arg = arg;
}
#endif /* _KERNEL */
#endif /* !_NETINET_IN_PCB_H_ */
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