200 lines
7.9 KiB
C
200 lines
7.9 KiB
C
/* $NetBSD: in_pcb.h,v 1.69 2020/09/08 14:12:57 christos Exp $ */
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/*
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* Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* Copyright (c) 1982, 1986, 1990, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
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*/
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#ifndef _NETINET_IN_PCB_H_
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#define _NETINET_IN_PCB_H_
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#include <sys/types.h>
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#include <net/route.h>
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#include <netinet/in.h>
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#include <netinet/in_pcb_hdr.h>
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#include <netinet/ip.h>
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struct ip_moptions;
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struct mbuf;
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/*
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* Common structure pcb for internet protocol implementation.
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* Here are stored pointers to local and foreign host table
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* entries, local and foreign socket numbers, and pointers
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* up (to a socket structure) and down (to a protocol-specific)
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* control block.
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*/
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struct inpcb {
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struct inpcb_hdr inp_head;
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#define inp_hash inp_head.inph_hash
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#define inp_queue inp_head.inph_queue
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#define inp_af inp_head.inph_af
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#define inp_ppcb inp_head.inph_ppcb
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#define inp_state inp_head.inph_state
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#define inp_portalgo inp_head.inph_portalgo
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#define inp_socket inp_head.inph_socket
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#define inp_table inp_head.inph_table
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#define inp_sp inp_head.inph_sp
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struct route inp_route; /* placeholder for routing entry */
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u_int16_t inp_fport; /* foreign port */
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u_int16_t inp_lport; /* local port */
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int inp_flags; /* generic IP/datagram flags */
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struct ip inp_ip; /* header prototype; should have more */
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struct mbuf *inp_options; /* IP options */
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struct ip_moptions *inp_moptions; /* IP multicast options */
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int inp_errormtu; /* MTU of last xmit status = EMSGSIZE */
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uint8_t inp_ip_minttl;
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bool inp_bindportonsend;
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struct in_addr inp_prefsrcip; /* preferred src IP when wild */
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pcb_overudp_cb_t inp_overudp_cb;
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void *inp_overudp_arg;
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};
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#define inp_faddr inp_ip.ip_dst
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#define inp_laddr inp_ip.ip_src
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/* flags in inp_flags: */
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#define INP_RECVOPTS 0x0001 /* receive incoming IP options */
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#define INP_RECVRETOPTS 0x0002 /* receive IP options for reply */
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#define INP_RECVDSTADDR 0x0004 /* receive IP dst address */
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#define INP_HDRINCL 0x0008 /* user supplies entire IP header */
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#define INP_HIGHPORT 0x0010 /* (unused; FreeBSD compat) */
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#define INP_LOWPORT 0x0020 /* user wants "low" port binding */
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#define INP_ANONPORT 0x0040 /* port chosen for user */
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#define INP_RECVIF 0x0080 /* receive incoming interface */
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/* XXX should move to an UDP control block */
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#define INP_ESPINUDP 0x0100 /* ESP over UDP for NAT-T */
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#define INP_ESPINUDP_NON_IKE 0x0200 /* ESP over UDP for NAT-T */
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#define INP_NOHEADER 0x0400 /* Kernel removes IP header
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* before feeding a packet
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* to the raw socket user.
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* The socket user will
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* not supply an IP header.
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* Cancels INP_HDRINCL.
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*/
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#define INP_RECVTTL 0x0800 /* receive incoming IP TTL */
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#define INP_RECVPKTINFO 0x1000 /* receive IP dst if/addr */
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#define INP_BINDANY 0x2000 /* allow bind to any address */
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#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
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INP_RECVIF|INP_RECVTTL|INP_RECVPKTINFO)
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#define sotoinpcb(so) ((struct inpcb *)(so)->so_pcb)
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#define inp_lock(inp) solock((inp)->inp_socket)
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#define inp_unlock(inp) sounlock((inp)->inp_socket)
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#define inp_locked(inp) solocked((inp)->inp_socket)
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#ifdef _KERNEL
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#include <sys/kauth.h>
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#include <sys/queue.h>
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struct inpcbtable;
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struct lwp;
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struct rtentry;
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struct sockaddr_in;
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struct socket;
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struct vestigial_inpcb;
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void in_losing(struct inpcb *);
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int in_pcballoc(struct socket *, void *);
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int in_pcbbindableaddr(const struct inpcb *, struct sockaddr_in *,
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kauth_cred_t);
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int in_pcbbind(void *, struct sockaddr_in *, struct lwp *);
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int in_pcbconnect(void *, struct sockaddr_in *, struct lwp *);
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void in_pcbdetach(void *);
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void in_pcbdisconnect(void *);
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void in_pcbinit(struct inpcbtable *, int, int);
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struct inpcb *
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in_pcblookup_port(struct inpcbtable *,
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struct in_addr, u_int, int, struct vestigial_inpcb *);
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struct inpcb *
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in_pcblookup_bind(struct inpcbtable *,
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struct in_addr, u_int);
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struct inpcb *
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in_pcblookup_connect(struct inpcbtable *,
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struct in_addr, u_int, struct in_addr, u_int,
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struct vestigial_inpcb *);
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int in_pcbnotify(struct inpcbtable *, struct in_addr, u_int,
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struct in_addr, u_int, int, void (*)(struct inpcb *, int));
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void in_pcbnotifyall(struct inpcbtable *, struct in_addr, int,
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void (*)(struct inpcb *, int));
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void in_pcbpurgeif0(struct inpcbtable *, struct ifnet *);
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void in_pcbpurgeif(struct inpcbtable *, struct ifnet *);
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void in_purgeifmcast(struct ip_moptions *, struct ifnet *);
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void in_pcbstate(struct inpcb *, int);
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void in_rtchange(struct inpcb *, int);
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void in_setpeeraddr(struct inpcb *, struct sockaddr_in *);
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void in_setsockaddr(struct inpcb *, struct sockaddr_in *);
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struct rtentry *
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in_pcbrtentry(struct inpcb *);
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void in_pcbrtentry_unref(struct rtentry *, struct inpcb *);
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static inline void
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in_pcb_register_overudp_cb(struct inpcb *inp, pcb_overudp_cb_t cb, void *arg)
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{
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inp->inp_overudp_cb = cb;
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inp->inp_overudp_arg = arg;
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}
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#endif /* _KERNEL */
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#endif /* !_NETINET_IN_PCB_H_ */
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