sys/netinet/in_pcb.h

   1 /*      $NetBSD: in_pcb.h,v 1.46 2009/07/16 04:09:51 minskim Exp $      */
   2
   3 /*
   4  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the project nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 /*
  33  * Copyright (c) 1982, 1986, 1990, 1993
  34  *      The Regents of the University of California.  All rights reserved.
  35  *
  36  * Redistribution and use in source and binary forms, with or without
  37  * modification, are permitted provided that the following conditions
  38  * are met:
  39  * 1. Redistributions of source code must retain the above copyright
  40  *    notice, this list of conditions and the following disclaimer.
  41  * 2. Redistributions in binary form must reproduce the above copyright
  42  *    notice, this list of conditions and the following disclaimer in the
  43  *    documentation and/or other materials provided with the distribution.
  44  * 3. Neither the name of the University nor the names of its contributors
  45  *    may be used to endorse or promote products derived from this software
  46  *    without specific prior written permission.
  47  *
  48  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  49  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  50  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  51  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  52  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  53  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  54  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  55  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  56  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  57  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  58  * SUCH DAMAGE.
  59  *
  60  *      @(#)in_pcb.h    8.1 (Berkeley) 6/10/93
  61  */
  62
  63 #ifndef _NETINET_IN_PCB_H_
  64 #define _NETINET_IN_PCB_H_
  65
  66 #include <sys/queue.h>
  67 #include <netinet/in_pcb_hdr.h>
  68
  69 /*
  70  * Common structure pcb for internet protocol implementation.
  71  * Here are stored pointers to local and foreign host table
  72  * entries, local and foreign socket numbers, and pointers
  73  * up (to a socket structure) and down (to a protocol-specific)
  74  * control block.
  75  */
  76 struct inpcb {
  77         struct inpcb_hdr inp_head;
  78 #define inp_hash        inp_head.inph_hash
  79 #define inp_queue       inp_head.inph_queue
  80 #define inp_af          inp_head.inph_af
  81 #define inp_ppcb        inp_head.inph_ppcb
  82 #define inp_state       inp_head.inph_state
  83 #define inp_socket      inp_head.inph_socket
  84 #define inp_table       inp_head.inph_table
  85 #define inp_sp          inp_head.inph_sp
  86         struct    route inp_route;      /* placeholder for routing entry */
  87         u_int16_t inp_fport;            /* foreign port */
  88         u_int16_t inp_lport;            /* local port */
  89         int       inp_flags;            /* generic IP/datagram flags */
  90         struct    ip inp_ip;            /* header prototype; should have more */
  91         struct    mbuf *inp_options;    /* IP options */
  92         struct    ip_moptions *inp_moptions; /* IP multicast options */
  93         int       inp_errormtu;         /* MTU of last xmit status = EMSGSIZE */
  94         uint8_t   inp_ip_minttl;
  95 };
  96
  97 #define inp_faddr       inp_ip.ip_dst
  98 #define inp_laddr       inp_ip.ip_src
  99
 100 /* flags in inp_flags: */
 101 #define INP_RECVOPTS            0x01    /* receive incoming IP options */
 102 #define INP_RECVRETOPTS         0x02    /* receive IP options for reply */
 103 #define INP_RECVDSTADDR         0x04    /* receive IP dst address */
 104 #define INP_HDRINCL             0x08    /* user supplies entire IP header */
 105 #define INP_HIGHPORT            0x10    /* (unused; FreeBSD compat) */
 106 #define INP_LOWPORT             0x20    /* user wants "low" port binding */
 107 #define INP_ANONPORT            0x40    /* port chosen for user */
 108 #define INP_RECVIF              0x80    /* receive incoming interface */
 109 /* XXX should move to an UDP control block */
 110 #define INP_ESPINUDP            0x100   /* ESP over UDP for NAT-T */
 111 #define INP_ESPINUDP_NON_IKE    0x200   /* ESP over UDP for NAT-T */
 112 #define INP_ESPINUDP_ALL        (INP_ESPINUDP|INP_ESPINUDP_NON_IKE)
 113 #define INP_NOHEADER            0x400   /* Kernel removes IP header
 114                                          * before feeding a packet
 115                                          * to the raw socket user.
 116                                          * The socket user will
 117                                          * not supply an IP header.
 118                                          * Cancels INP_HDRINCL.
 119                                          */
 120 #define INP_RECVTTL             0x800   /* receive incoming IP TTL */
 121 #define INP_CONTROLOPTS         (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR|\
 122                                 INP_RECVIF|INP_RECVTTL)
 123
 124 #define sotoinpcb(so)           ((struct inpcb *)(so)->so_pcb)
 125
 126 #ifdef _KERNEL
 127 void    in_losing(struct inpcb *);
 128 int     in_pcballoc(struct socket *, void *);
 129 int     in_pcbbind(void *, struct mbuf *, struct lwp *);
 130 int     in_pcbconnect(void *, struct mbuf *, struct lwp *);
 131 void    in_pcbdetach(void *);
 132 void    in_pcbdisconnect(void *);
 133 void    in_pcbinit(struct inpcbtable *, int, int);
 134 struct inpcb *
 135         in_pcblookup_port(struct inpcbtable *,
 136             struct in_addr, u_int, int);
 137 struct inpcb *
 138         in_pcblookup_bind(struct inpcbtable *,
 139             struct in_addr, u_int);
 140 struct inpcb *
 141         in_pcblookup_connect(struct inpcbtable *,
 142             struct in_addr, u_int, struct in_addr, u_int);
 143 int     in_pcbnotify(struct inpcbtable *, struct in_addr, u_int,
 144             struct in_addr, u_int, int, void (*)(struct inpcb *, int));
 145 void    in_pcbnotifyall(struct inpcbtable *, struct in_addr, int,
 146             void (*)(struct inpcb *, int));
 147 void    in_pcbpurgeif0(struct inpcbtable *, struct ifnet *);
 148 void    in_pcbpurgeif(struct inpcbtable *, struct ifnet *);
 149 void    in_pcbstate(struct inpcb *, int);
 150 void    in_rtchange(struct inpcb *, int);
 151 void    in_setpeeraddr(struct inpcb *, struct mbuf *);
 152 void    in_setsockaddr(struct inpcb *, struct mbuf *);
 153 struct rtentry *
 154         in_pcbrtentry(struct inpcb *);
 155 extern struct sockaddr_in *in_selectsrc(struct sockaddr_in *,
 156         struct route *, int, struct ip_moptions *, int *);
 157 #endif
 158
 159 #endif /* !_NETINET_IN_PCB_H_ */