The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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FreeBSD/Linux Kernel Cross Reference
sys/netkey/keydb.h

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    1 /*      $FreeBSD: releng/5.1/sys/netkey/keydb.h 108955 2003-01-08 17:59:24Z ume $       */
    2 /*      $KAME: keydb.h,v 1.14 2000/08/02 17:58:26 sakane 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 #ifndef _NETKEY_KEYDB_H_
   34 #define _NETKEY_KEYDB_H_
   35 
   36 #ifdef _KERNEL
   37 
   38 #include <netkey/key_var.h>
   39 
   40 /* Security Assocciation Index */
   41 /* NOTE: Ensure to be same address family */
   42 struct secasindex {
   43         struct sockaddr_storage src;    /* srouce address for SA */
   44         struct sockaddr_storage dst;    /* destination address for SA */
   45         u_int16_t proto;                /* IPPROTO_ESP or IPPROTO_AH */
   46         u_int8_t mode;                  /* mode of protocol, see ipsec.h */
   47         u_int32_t reqid;                /* reqid id who owned this SA */
   48                                         /* see IPSEC_MANUAL_REQID_MAX. */
   49 };
   50 
   51 /* Security Association Data Base */
   52 struct secashead {
   53         LIST_ENTRY(secashead) chain;
   54 
   55         struct secasindex saidx;
   56 
   57         struct sadb_ident *idents;      /* source identity */
   58         struct sadb_ident *identd;      /* destination identity */
   59                                         /* XXX I don't know how to use them. */
   60 
   61         u_int8_t state;                 /* MATURE or DEAD. */
   62         LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
   63                                         /* SA chain */
   64                                         /* The first of this list is newer SA */
   65 
   66         union {
   67                 struct route sau_route;
   68                 struct route_in6 sau_route6;
   69         } sa_u;
   70 #define sa_route sa_u.sau_route
   71 };
   72 
   73 /* Security Association */
   74 struct secasvar {
   75         LIST_ENTRY(secasvar) chain;
   76 
   77         int refcnt;                     /* reference count */
   78         u_int8_t state;                 /* Status of this Association */
   79 
   80         u_int8_t alg_auth;              /* Authentication Algorithm Identifier*/
   81         u_int8_t alg_enc;               /* Cipher Algorithm Identifier */
   82         u_int32_t spi;                  /* SPI Value, network byte order */
   83         u_int32_t flags;                /* holder for SADB_KEY_FLAGS */
   84 
   85         struct sadb_key *key_auth;      /* Key for Authentication */
   86         struct sadb_key *key_enc;       /* Key for Encryption */
   87         caddr_t iv;                     /* Initilization Vector */
   88         u_int ivlen;                    /* length of IV */
   89         void *sched;                    /* intermediate encryption key */
   90         size_t schedlen;
   91 
   92         struct secreplay *replay;       /* replay prevention */
   93         long created;                   /* for lifetime */
   94 
   95         struct sadb_lifetime *lft_c;    /* CURRENT lifetime, it's constant. */
   96         struct sadb_lifetime *lft_h;    /* HARD lifetime */
   97         struct sadb_lifetime *lft_s;    /* SOFT lifetime */
   98 
   99         u_int32_t seq;                  /* sequence number */
  100         pid_t pid;                      /* message's pid */
  101 
  102         struct secashead *sah;          /* back pointer to the secashead */
  103 };
  104 
  105 /* replay prevention */
  106 struct secreplay {
  107         u_int32_t count;
  108         u_int wsize;            /* window size, i.g. 4 bytes */
  109         u_int32_t seq;          /* used by sender */
  110         u_int32_t lastseq;      /* used by receiver */
  111         caddr_t bitmap;         /* used by receiver */
  112         int overflow;           /* overflow flag */
  113 };
  114 
  115 /* socket table due to send PF_KEY messages. */
  116 struct secreg {
  117         LIST_ENTRY(secreg) chain;
  118 
  119         struct socket *so;
  120 };
  121 
  122 #ifndef IPSEC_NONBLOCK_ACQUIRE
  123 /* acquiring list table. */
  124 struct secacq {
  125         LIST_ENTRY(secacq) chain;
  126 
  127         struct secasindex saidx;
  128 
  129         u_int32_t seq;          /* sequence number */
  130         long created;           /* for lifetime */
  131         int count;              /* for lifetime */
  132 };
  133 #endif
  134 
  135 /* Sensitivity Level Specification */
  136 /* nothing */
  137 
  138 #define SADB_KILL_INTERVAL      600     /* six seconds */
  139 
  140 struct key_cb {
  141         int key_count;
  142         int any_count;
  143 };
  144 
  145 /* secpolicy */
  146 extern struct secpolicy *keydb_newsecpolicy(void);
  147 extern void keydb_delsecpolicy(struct secpolicy *);
  148 /* secashead */
  149 extern struct secashead *keydb_newsecashead(void);
  150 extern void keydb_delsecashead(struct secashead *);
  151 /* secasvar */
  152 extern struct secasvar *keydb_newsecasvar(void);
  153 extern void keydb_refsecasvar(struct secasvar *);
  154 extern void keydb_freesecasvar(struct secasvar *);
  155 /* secreplay */
  156 extern struct secreplay *keydb_newsecreplay(size_t);
  157 extern void keydb_delsecreplay(struct secreplay *);
  158 /* secreg */
  159 extern struct secreg *keydb_newsecreg(void);
  160 extern void keydb_delsecreg(struct secreg *);
  161 
  162 #endif /* _KERNEL */
  163 
  164 #endif /* _NETKEY_KEYDB_H_ */

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