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//==========================================================================

//

//      include/netinet/in_pcb.h

//

//      

//

//==========================================================================

//####BSDCOPYRIGHTBEGIN####

//

// -------------------------------------------

//

// Portions of this software may have been derived from OpenBSD or other sources,

// and are covered by the appropriate copyright disclaimers included herein.

//

// -------------------------------------------

//

//####BSDCOPYRIGHTEND####

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    gthomas

// Contributors: gthomas

// Date:         2000-01-10

// Purpose:      

// Description:  

//              

//

//####DESCRIPTIONEND####

//

//==========================================================================

/*      $OpenBSD: in_pcb.h,v 1.19 1999/12/12 12:10:43 itojun Exp $      */

/*      $NetBSD: in_pcb.h,v 1.14 1996/02/13 23:42:00 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. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *      This product includes software developed by the University of

 *      California, Berkeley and its contributors.

 * 4. 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/queue.h>

#if 0   /*KAME IPSEC*/

#include <netinet6/ipsec.h>

#endif

#include <netinet6/ip6.h>

#include <netinet6/ip6_var.h>

#include <netinet6/icmp6.h>

#include <netinet/ip_ipsp.h>

union inpaddru {

        struct in6_addr iau_addr6;

        struct {

                uint8_t pad[12];

                struct in_addr inaddr;  /* easier transition */

        } iau_a4u;

};

/*

 * 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 {

        LIST_ENTRY(inpcb) inp_hash;

        CIRCLEQ_ENTRY(inpcb) inp_queue;

        struct    inpcbtable *inp_table;

        union     inpaddru inp_faddru;          /* Foreign address. */

        union     inpaddru inp_laddru;          /* Local address. */

#define inp_faddr       inp_faddru.iau_a4u.inaddr

#define inp_faddr6      inp_faddru.iau_addr6

#define inp_laddr       inp_laddru.iau_a4u.inaddr

#define inp_laddr6      inp_laddru.iau_addr6

        u_int16_t inp_fport;            /* foreign port */

        u_int16_t inp_lport;            /* local port */

        struct    socket *inp_socket;   /* back pointer to socket */

        caddr_t   inp_ppcb;             /* pointer to per-protocol pcb */

        union {                         /* Route (notice increased size). */

                struct route ru_route;

                struct route_in6 ru_route6;

        } inp_ru;

#define inp_route       inp_ru.ru_route

#define inp_route6      inp_ru.ru_route6

        int       inp_flags;            /* generic IP/datagram flags */

        union {                         /* Header prototype. */

                struct ip hu_ip;

                struct ip6_hdr hu_ipv6;

        } inp_hu;

#define inp_ip          inp_hu.hu_ip

#define inp_ipv6        inp_hu.hu_ipv6

        struct    mbuf *inp_options;    /* IP options */

        struct ip6_pktopts *inp_outputopts6; /* IP6 options for outgoing packets */

        int inp_hops;

        union {

                struct ip_moptions *mou_mo;    /* IPv4 multicast options */

                struct ip6_moptions *mou_mo6; /* IPv6 multicast options */

        } inp_mou;

#define inp_moptions inp_mou.mou_mo

#define inp_moptions6 inp_mou.mou_mo6

        u_char    inp_seclevel[3];      /* Only the first 3 are used for now */

#define SL_AUTH           0             /* Authentication level */

#define SL_ESP_TRANS      1             /* ESP transport level */

#define SL_ESP_NETWORK    2             /* ESP network (encapsulation) level */

        u_int8_t  inp_secrequire:4,     /* Condensed State from above */

                  inp_secresult:4;      /* Result from Key Management */

#define SR_FAILED         1             /* Negotiation failed permanently */

#define SR_SUCCESS        2             /* SA successfully established */

#define SR_WAIT           3             /* Waiting for SA */

        TAILQ_ENTRY(inpcb) inp_tdb_next;

        struct tdb     *inp_tdb;        /* If tdb_dst matches our dst, use */

        int     inp_fflowinfo;          /* Foreign flowlabel & priority */

        int     inp_csumoffset;

        struct  icmp6_filter *inp_icmp6filt;

#if 0 /*KAME IPSEC*/

        struct secpolicy *inp_sp;       /* security policy. It may not be

                                         * used according to policy selection.

                                         */

#endif

};

struct inpcbtable {

        CIRCLEQ_HEAD(, inpcb) inpt_queue;

        LIST_HEAD(inpcbhead, inpcb) *inpt_hashtbl;

        u_long    inpt_hash;

        u_int16_t inpt_lastport;

};

/* flags in inp_flags: */

#define INP_RECVOPTS    0x001   /* receive incoming IP options */

#define INP_RECVRETOPTS 0x002   /* receive IP options for reply */

#define INP_RECVDSTADDR 0x004   /* receive IP dst address */

#define INP_RXDSTOPTS   INP_RECVOPTS

#define INP_RXHOPOPTS   INP_RECVRETOPTS

#define INP_RXINFO      INP_RECVDSTADDR

#define INP_RXSRCRT     0x010

#define INP_HOPLIMIT    0x020

#define INP_CONTROLOPTS (INP_RECVOPTS|INP_RECVRETOPTS|INP_RECVDSTADDR| \

            INP_RXSRCRT|INP_HOPLIMIT)

#define INP_HDRINCL     0x008   /* user supplies entire IP header */

#define INP_HIGHPORT    0x010   /* user wants "high" port binding */

#define INP_LOWPORT     0x020   /* user wants "low" port binding */

/*

 * These flags' values should be determined by either the transport

 * protocol at PRU_BIND, PRU_LISTEN, PRU_CONNECT, etc, or by in_pcb*().

 */

#define INP_IPV6        0x100   /* sotopf(inp->inp_socket) == PF_INET6 */

#define INP_IPV6_UNDEC  0x200   /* PCB is PF_INET6, but listens for V4/V6 */

#define INP_IPV6_MAPPED 0x400   /* PF_INET6 PCB which is connected to

                                 * an IPv4 host, or is bound to

                                 * an IPv4 address (specified with

                                 * the mapped form of v6 addresses) */

#define INP_IPV6_MCAST  0x800   /* Set if inp_moptions points to ipv6 ones */

#if 1   /*KAME*/

/* flags in in6p_flags */

#define IN6P_RECVOPTS   INP_RECVOPTS    /* receive incoming IP6 options */

#define IN6P_RECVRETOPTS INP_RECVRETOPTS /* receive IP6 options for reply */

#define IN6P_RECVDSTADDR INP_RECVDSTADDR /* receive IP6 dst address */

#define IN6P_HIGHPORT   INP_HIGHPORT    /* user wants "high" port binding */

#define IN6P_LOWPORT    INP_LOWPORT     /* user wants "low" port binding */

#define IN6P_ANONPORT   0x40            /* port chosen for user */

#define IN6P_FAITH      0x80            /* accept FAITH'ed connections */

#define IN6P_PKTINFO    0x010000

#define IN6P_HOPLIMIT   0x020000

#define IN6P_NEXTHOP    0x040000

#define IN6P_HOPOPTS    0x080000

#define IN6P_DSTOPTS    0x100000

#define IN6P_RTHDR      0x200000

#define IN6P_CONTROLOPTS        (0x3f0000 | IN6P_RECVOPTS | IN6P_RECVRETOPTS | IN6P_RECVDSTADDR)

#endif

#define INPLOOKUP_WILDCARD      1

#define INPLOOKUP_SETLOCAL      2

#define INPLOOKUP_IPV6          4

#define sotoinpcb(so)   ((struct inpcb *)(so)->so_pcb)

/* macros for handling bitmap of ports not to allocate dynamically */

#define DP_MAPBITS      (sizeof(u_int32_t) * NBBY)

#define DP_MAPSIZE      (howmany(IPPORT_RESERVED/2, DP_MAPBITS))

#define DP_SET(m, p)    ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] |= (1 << ((p) % DP_MAPBITS)))

#define DP_CLR(m, p)    ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] &= ~(1 << ((p) % DP_MAPBITS)))

#define DP_ISSET(m, p)  ((m)[((p) - IPPORT_RESERVED/2) / DP_MAPBITS] & (1 << ((p) % DP_MAPBITS)))

/* default values for baddynamicports [see ip_init()] */

#define DEFBADDYNAMICPORTS_TCP  { 749, 750, 751, 760, 761, 871, 0 }

#define DEFBADDYNAMICPORTS_UDP  { 750, 751, 0 }

struct baddynamicports {

        u_int32_t tcp[DP_MAPSIZE];

        u_int32_t udp[DP_MAPSIZE];

};

#ifdef _KERNEL

#define sotopf(so)  (so->so_proto->pr_domain->dom_family)

void     in_losing __P((struct inpcb *));

int      in_pcballoc __P((struct socket *, void *));

int      in_pcbbind __P((void *, struct mbuf *));

int      in_pcbconnect __P((void *, struct mbuf *));

void     in_pcbdetach __P((void *));

void     in_pcbdisconnect __P((void *));

struct inpcb *

         in_pcbhashlookup __P((struct inpcbtable *, struct in_addr,

                               u_int, struct in_addr, u_int));

#ifdef INET6

struct inpcb *

         in6_pcbhashlookup __P((struct inpcbtable *, struct in6_addr *,

                               u_int, struct in6_addr *, u_int));

int      in6_pcbbind __P((struct inpcb *, struct mbuf *));

int      in6_pcbconnect __P((struct inpcb *, struct mbuf *));

int      in6_setsockaddr __P((struct inpcb *, struct mbuf *));

int      in6_setpeeraddr __P((struct inpcb *, struct mbuf *));

#endif /* INET6 */

void     in_pcbinit __P((struct inpcbtable *, int));

struct inpcb *

         in_pcblookup __P((struct inpcbtable *, void *, u_int, void *,

            u_int, int));

void     in_pcbnotify __P((struct inpcbtable *, struct sockaddr *,

            u_int, struct in_addr, u_int, int, void (*)(struct inpcb *, int)));

void     in_pcbnotifyall __P((struct inpcbtable *, struct sockaddr *,

            int, void (*)(struct inpcb *, int)));

void     in_pcbrehash __P((struct inpcb *));

void     in_rtchange __P((struct inpcb *, int));

void     in_setpeeraddr __P((struct inpcb *, struct mbuf *));

void     in_setsockaddr __P((struct inpcb *, struct mbuf *));

int      in_baddynamic __P((u_int16_t, u_int16_t));

extern struct sockaddr_in *in_selectsrc __P((struct sockaddr_in *,

        struct route *, int, struct ip_moptions *, int *));

/* INET6 stuff */

int     in6_pcbnotify __P((struct inpcbtable *, struct sockaddr *,

                           u_int, struct in6_addr *, u_int, int,

                           void (*)(struct inpcb *, int)));

struct  in6_addr *in6_selectsrc __P((struct sockaddr_in6 *,

                                     struct ip6_pktopts *,

                                     struct ip6_moptions *,

                                     struct route_in6 *,

                                     struct in6_addr *, int *));

int     in6_selecthlim __P((struct inpcb *, struct ifnet *));

#endif

#endif // _NETINET_IN_PCB_H_