sys/netinet6/in6_pcb.h

   1 /*      $NetBSD: in6_pcb.h,v 1.33 2009/04/20 18:14:30 elad 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
  70 /*
  71  * Common structure pcb for internet protocol implementation.
  72  * Here are stored pointers to local and foreign host table
  73  * entries, local and foreign socket numbers, and pointers
  74  * up (to a socket structure) and down (to a protocol-specific)
  75  * control block.
  76  */
  77 struct icmp6_filter;
  78
  79 struct  in6pcb {
  80         struct inpcb_hdr in6p_head;
  81 #define in6p_hash       in6p_head.inph_hash
  82 #define in6p_queue      in6p_head.inph_queue
  83 #define in6p_af         in6p_head.inph_af
  84 #define in6p_ppcb       in6p_head.inph_ppcb
  85 #define in6p_state      in6p_head.inph_state
  86 #define in6p_socket     in6p_head.inph_socket
  87 #define in6p_table      in6p_head.inph_table
  88 #define in6p_sp         in6p_head.inph_sp
  89         struct  route in6p_route;       /* placeholder for routing entry */
  90         u_int16_t in6p_fport;           /* foreign port */
  91         u_int16_t in6p_lport;           /* local port */
  92         u_int32_t in6p_flowinfo;        /* priority and flowlabel */
  93         int     in6p_flags;             /* generic IP6/datagram flags */
  94         int     in6p_hops;              /* default hop limit */
  95         struct  ip6_hdr in6p_ip6;       /* header prototype */
  96         struct  mbuf *in6p_options;   /* IP6 options */
  97         struct  ip6_pktopts *in6p_outputopts; /* IP6 options for outgoing packets */
  98         struct  ip6_moptions *in6p_moptions; /* IP6 multicast options */
  99         struct icmp6_filter *in6p_icmp6filt;
 100         int     in6p_cksum;             /* IPV6_CHECKSUM setsockopt */
 101 };
 102
 103 #define in6p_faddr      in6p_ip6.ip6_dst
 104 #define in6p_laddr      in6p_ip6.ip6_src
 105
 106 /* states in inp_state: */
 107 #define IN6P_ATTACHED           INP_ATTACHED
 108 #define IN6P_BOUND              INP_BOUND
 109 #define IN6P_CONNECTED          INP_CONNECTED
 110
 111 /*
 112  * Flags in in6p_flags
 113  * We define KAME's original flags in higher 16 bits as much as possible
 114  * for compatibility with *bsd*s.
 115  */
 116 #define IN6P_RECVOPTS           0x001000 /* receive incoming IP6 options */
 117 #define IN6P_RECVRETOPTS        0x002000 /* receive IP6 options for reply */
 118 #define IN6P_RECVDSTADDR        0x004000 /* receive IP6 dst address */
 119 #define IN6P_IPV6_V6ONLY        0x008000 /* restrict AF_INET6 socket for v6 */
 120 #define IN6P_PKTINFO            0x010000 /* receive IP6 dst and I/F */
 121 #define IN6P_HOPLIMIT           0x020000 /* receive hoplimit */
 122 #define IN6P_HOPOPTS            0x040000 /* receive hop-by-hop options */
 123 #define IN6P_DSTOPTS            0x080000 /* receive dst options after rthdr */
 124 #define IN6P_RTHDR              0x100000 /* receive routing header */
 125 #define IN6P_RTHDRDSTOPTS       0x200000 /* receive dstoptions before rthdr */
 126 #define IN6P_TCLASS             0x400000 /* traffic class */
 127
 128 #define IN6P_HIGHPORT           0x1000000 /* user wants "high" port binding */
 129 #define IN6P_LOWPORT            0x2000000 /* user wants "low" port binding */
 130 #define IN6P_ANONPORT           0x4000000 /* port chosen for user */
 131 #define IN6P_FAITH              0x8000000 /* accept FAITH'ed connections */
 132
 133 #define IN6P_RFC2292            0x40000000 /* RFC2292 */
 134 #define IN6P_MTU                0x80000000 /* use minimum MTU */
 135
 136 #define IN6P_CONTROLOPTS        (IN6P_PKTINFO|IN6P_HOPLIMIT|IN6P_HOPOPTS|\
 137                                  IN6P_DSTOPTS|IN6P_RTHDR|IN6P_RTHDRDSTOPTS|\
 138                                  IN6P_TCLASS|IN6P_RFC2292|\
 139                                  IN6P_MTU)
 140
 141 /* compute hash value for foreign and local in6_addr and port */
 142 #define IN6_HASH(faddr, fport, laddr, lport)                    \
 143         (((faddr)->s6_addr32[0] ^ (faddr)->s6_addr32[1] ^       \
 144           (faddr)->s6_addr32[2] ^ (faddr)->s6_addr32[3] ^       \
 145           (laddr)->s6_addr32[0] ^ (laddr)->s6_addr32[1] ^       \
 146           (laddr)->s6_addr32[2] ^ (laddr)->s6_addr32[3])        \
 147          + (fport) + (lport))
 148
 149 #define sotoin6pcb(so)  ((struct in6pcb *)(so)->so_pcb)
 150
 151 #ifdef _KERNEL
 152 void    in6_losing(struct in6pcb *);
 153 void    in6_pcbinit(struct inpcbtable *, int, int);
 154 int     in6_pcballoc(struct socket *, void *);
 155 int     in6_pcbbind(void *, struct mbuf *, struct lwp *);
 156 int     in6_pcbconnect(void *, struct mbuf *, struct lwp *);
 157 void    in6_pcbdetach(struct in6pcb *);
 158 void    in6_pcbdisconnect(struct in6pcb *);
 159 struct  in6pcb *in6_pcblookup_port(struct inpcbtable *, struct in6_addr *,
 160         u_int, int);
 161 int     in6_pcbnotify(struct inpcbtable *, const struct sockaddr *,
 162         u_int, const struct sockaddr *, u_int, int, void *,
 163         void (*)(struct in6pcb *, int));
 164 void    in6_pcbpurgeif0(struct inpcbtable *, struct ifnet *);
 165 void    in6_pcbpurgeif(struct inpcbtable *, struct ifnet *);
 166 void    in6_pcbstate(struct in6pcb *, int);
 167 void    in6_rtchange(struct in6pcb *, int);
 168 void    in6_setpeeraddr(struct in6pcb *, struct mbuf *);
 169 void    in6_setsockaddr(struct in6pcb *, struct mbuf *);
 170
 171 /* in in6_src.c */
 172 int     in6_selecthlim(struct in6pcb *, struct ifnet *);
 173 int     in6_pcbsetport(struct sockaddr_in6 *, struct in6pcb *, struct lwp *);
 174
 175 extern struct rtentry *
 176         in6_pcbrtentry(struct in6pcb *);
 177 extern struct in6pcb *in6_pcblookup_connect(struct inpcbtable *,
 178         const struct in6_addr *, u_int, const struct in6_addr *, u_int, int);
 179 extern struct in6pcb *in6_pcblookup_bind(struct inpcbtable *,
 180         const struct in6_addr *, u_int, int);
 181 #endif /* _KERNEL */
 182
 183 #endif /* !_NETINET6_IN6_PCB_H_ */