1/* $NetBSD: in6_pcb.h,v 1.50 2018/11/22 04:48:34 knakahara Exp $ */
2/* $KAME: in6_pcb.h,v 1.45 2001/02/09 05:59:46 itojun Exp $ */
3
4/*
5 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33/*
34 * Copyright (c) 1982, 1986, 1990, 1993
35 * The Regents of the University of California. All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions and the following disclaimer.
42 * 2. Redistributions in binary form must reproduce the above copyright
43 * notice, this list of conditions and the following disclaimer in the
44 * documentation and/or other materials provided with the distribution.
45 * 3. Neither the name of the University nor the names of its contributors
46 * may be used to endorse or promote products derived from this software
47 * without specific prior written permission.
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 * @(#)in_pcb.h 8.1 (Berkeley) 6/10/93
62 */
63
64#ifndef _NETINET6_IN6_PCB_H_
65#define _NETINET6_IN6_PCB_H_
66
67#include <sys/queue.h>
68#include <netinet/in_pcb_hdr.h>
69#include <netinet/ip6.h>
70
71/*
72 * Common structure pcb for internet protocol implementation.
73 * Here are stored pointers to local and foreign host table
74 * entries, local and foreign socket numbers, and pointers
75 * up (to a socket structure) and down (to a protocol-specific)
76 * control block.
77 */
78struct icmp6_filter;
79
80struct in6pcb {
81 struct inpcb_hdr in6p_head;
82#define in6p_hash in6p_head.inph_hash
83#define in6p_queue in6p_head.inph_queue
84#define in6p_af in6p_head.inph_af
85#define in6p_ppcb in6p_head.inph_ppcb
86#define in6p_state in6p_head.inph_state
87#define in6p_portalgo in6p_head.inph_portalgo
88#define in6p_socket in6p_head.inph_socket
89#define in6p_table in6p_head.inph_table
90#define in6p_sp in6p_head.inph_sp
91 struct route in6p_route; /* placeholder for routing entry */
92 u_int16_t in6p_fport; /* foreign port */
93 u_int16_t in6p_lport; /* local port */
94 u_int32_t in6p_flowinfo; /* priority and flowlabel */
95 int in6p_flags; /* generic IP6/datagram flags */
96 int in6p_hops; /* default hop limit */
97 struct ip6_hdr in6p_ip6; /* header prototype */
98 struct mbuf *in6p_options; /* IP6 options */
99 struct ip6_pktopts *in6p_outputopts; /* IP6 options for outgoing packets */
100 struct ip6_moptions *in6p_moptions; /* IP6 multicast options */
101 struct icmp6_filter *in6p_icmp6filt;
102 int in6p_cksum; /* IPV6_CHECKSUM setsockopt */
103 bool in6p_bindportonsend;
104 struct ip_moptions *in6p_v4moptions;/* IP4 multicast options */
105};
106
107#define in6p_faddr in6p_ip6.ip6_dst
108#define in6p_laddr in6p_ip6.ip6_src
109
110#define in6p_lock(in6p) solock((in6p)->in6p_socket)
111#define in6p_unlock(in6p) sounlock((in6p)->in6p_socket)
112#define in6p_locked(in6p) solocked((in6p)->in6p_socket)
113
114/* states in inp_state: */
115#define IN6P_ATTACHED INP_ATTACHED
116#define IN6P_BOUND INP_BOUND
117#define IN6P_CONNECTED INP_CONNECTED
118
119/*
120 * Flags in in6p_flags
121 * We define KAME's original flags in higher 16 bits as much as possible
122 * for compatibility with *bsd*s.
123 */
124#define IN6P_RECVOPTS 0x001000 /* receive incoming IP6 options */
125#define IN6P_RECVRETOPTS 0x002000 /* receive IP6 options for reply */
126#define IN6P_RECVDSTADDR 0x004000 /* receive IP6 dst address */
127#define IN6P_IPV6_V6ONLY 0x008000 /* restrict AF_INET6 socket for v6 */
128#define IN6P_PKTINFO 0x010000 /* receive IP6 dst and I/F */
129#define IN6P_HOPLIMIT 0x020000 /* receive hoplimit */
130#define IN6P_HOPOPTS 0x040000 /* receive hop-by-hop options */
131#define IN6P_DSTOPTS 0x080000 /* receive dst options after rthdr */
132#define IN6P_RTHDR 0x100000 /* receive routing header */
133#define IN6P_RTHDRDSTOPTS 0x200000 /* receive dstoptions before rthdr */
134#define IN6P_TCLASS 0x400000 /* traffic class */
135
136#define IN6P_HIGHPORT 0x1000000 /* user wants "high" port binding */
137#define IN6P_LOWPORT 0x2000000 /* user wants "low" port binding */
138#define IN6P_ANONPORT 0x4000000 /* port chosen for user */
139#define IN6P_FAITH 0x8000000 /* accept FAITH'ed connections */
140/* XXX should move to an UDP control block */
141#define IN6P_ESPINUDP INP_ESPINUDP /* ESP over UDP for NAT-T */
142
143#define IN6P_RFC2292 0x40000000 /* RFC2292 */
144#define IN6P_MTU 0x80000000 /* use minimum MTU */
145
146#define IN6P_CONTROLOPTS (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
147 IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
148 IN6P_TCLASS|IN6P_RFC2292|\
149 IN6P_MTU)
150
151#ifdef _KERNEL
152/* compute hash value for foreign and local in6_addr and port */
153#define IN6_HASH(faddr, fport, laddr, lport) \
154 (((faddr)->s6_addr32[0] ^ (faddr)->s6_addr32[1] ^ \
155 (faddr)->s6_addr32[2] ^ (faddr)->s6_addr32[3] ^ \
156 (laddr)->s6_addr32[0] ^ (laddr)->s6_addr32[1] ^ \
157 (laddr)->s6_addr32[2] ^ (laddr)->s6_addr32[3]) \
158 + (fport) + (lport))
159
160#define sotoin6pcb(so) ((struct in6pcb *)(so)->so_pcb)
161
162void in6_losing(struct in6pcb *);
163void in6_pcbinit(struct inpcbtable *, int, int);
164int in6_pcballoc(struct socket *, void *);
165int in6_pcbbind(void *, struct sockaddr_in6 *, struct lwp *);
166int in6_pcbconnect(void *, struct sockaddr_in6 *, struct lwp *);
167void in6_pcbdetach(struct in6pcb *);
168void in6_pcbdisconnect(struct in6pcb *);
169struct in6pcb *in6_pcblookup_port(struct inpcbtable *, struct in6_addr *,
170 u_int, int, struct vestigial_inpcb *);
171int in6_pcbnotify(struct inpcbtable *, const struct sockaddr *,
172 u_int, const struct sockaddr *, u_int, int, void *,
173 void (*)(struct in6pcb *, int));
174void in6_pcbpurgeif0(struct inpcbtable *, struct ifnet *);
175void in6_pcbpurgeif(struct inpcbtable *, struct ifnet *);
176void in6_pcbstate(struct in6pcb *, int);
177void in6_rtchange(struct in6pcb *, int);
178void in6_setpeeraddr(struct in6pcb *, struct sockaddr_in6 *);
179void in6_setsockaddr(struct in6pcb *, struct sockaddr_in6 *);
180
181/* in in6_src.c */
182int in6_selecthlim(struct in6pcb *, struct ifnet *);
183int in6_selecthlim_rt(struct in6pcb *);
184int in6_pcbsetport(struct sockaddr_in6 *, struct in6pcb *, struct lwp *);
185
186extern struct rtentry *
187 in6_pcbrtentry(struct in6pcb *);
188extern void
189 in6_pcbrtentry_unref(struct rtentry *, struct in6pcb *);
190extern struct in6pcb *in6_pcblookup_connect(struct inpcbtable *,
191 const struct in6_addr *, u_int, const struct in6_addr *, u_int, int,
192 struct vestigial_inpcb *);
193extern struct in6pcb *in6_pcblookup_bind(struct inpcbtable *,
194 const struct in6_addr *, u_int, int);
195#endif /* _KERNEL */
196
197#endif /* !_NETINET6_IN6_PCB_H_ */
198