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/6.0/sys/netkey/keydb.h 139823 2005-01-07 01:45:51Z imp $       */
    2 /*      $KAME: keydb.h,v 1.24 2003/09/07 15:12:10 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 #ifndef _NETKEY_KEYDB_H_
   34 #define _NETKEY_KEYDB_H_
   35 
   36 #ifdef _KERNEL
   37 
   38 #include <netkey/key_var.h>
   39 
   40 #ifndef _SOCKADDR_UNION_DEFINED
   41 #define _SOCKADDR_UNION_DEFINED
   42 /*
   43  * The union of all possible address formats we handle.
   44  */
   45 union sockaddr_union {
   46         struct sockaddr         sa;
   47         struct sockaddr_in      sin;
   48         struct sockaddr_in6     sin6;
   49 };
   50 #endif /* _SOCKADDR_UNION_DEFINED */
   51 
   52 /* Security Assocciation Index */
   53 /* NOTE: Ensure to be same address family */
   54 struct secasindex {
   55         struct sockaddr_storage src;    /* srouce address for SA */
   56         struct sockaddr_storage dst;    /* destination address for SA */
   57         u_int16_t proto;                /* IPPROTO_ESP or IPPROTO_AH */
   58         u_int8_t mode;                  /* mode of protocol, see ipsec.h */
   59         u_int32_t reqid;                /* reqid id who owned this SA */
   60                                         /* see IPSEC_MANUAL_REQID_MAX. */
   61 };
   62 
   63 /* Security Association Data Base */
   64 struct secashead {
   65         LIST_ENTRY(secashead) chain;
   66 
   67         struct secasindex saidx;
   68 
   69         struct sadb_ident *idents;      /* source identity */
   70         struct sadb_ident *identd;      /* destination identity */
   71                                         /* XXX I don't know how to use them. */
   72 
   73         u_int8_t state;                 /* MATURE or DEAD. */
   74         LIST_HEAD(_satree, secasvar) savtree[SADB_SASTATE_MAX+1];
   75                                         /* SA chain */
   76                                         /* The first of this list is newer SA */
   77 
   78         union {
   79                 struct route sau_route;
   80                 struct route_in6 sau_route6;
   81         } sa_u;
   82 #define sa_route sa_u.sau_route
   83 };
   84 
   85 /* Security Association */
   86 struct secasvar {
   87         TAILQ_ENTRY(secasvar) tailq;
   88         LIST_ENTRY(secasvar) chain;
   89         LIST_ENTRY(secasvar) spihash;
   90 
   91         int refcnt;                     /* reference count */
   92         u_int8_t state;                 /* Status of this Association */
   93 
   94         u_int8_t alg_auth;              /* Authentication Algorithm Identifier*/
   95         u_int8_t alg_enc;               /* Cipher Algorithm Identifier */
   96         u_int32_t spi;                  /* SPI Value, network byte order */
   97         u_int32_t flags;                /* holder for SADB_KEY_FLAGS */
   98 
   99         struct sadb_key *key_auth;      /* Key for Authentication */
  100         struct sadb_key *key_enc;       /* Key for Encryption */
  101         caddr_t iv;                     /* Initilization Vector */
  102         u_int ivlen;                    /* length of IV */
  103         void *sched;                    /* intermediate encryption key */
  104         size_t schedlen;
  105 
  106         struct secreplay *replay;       /* replay prevention */
  107         long created;                   /* for lifetime */
  108 
  109         struct sadb_lifetime *lft_c;    /* CURRENT lifetime, it's constant. */
  110         struct sadb_lifetime *lft_h;    /* HARD lifetime */
  111         struct sadb_lifetime *lft_s;    /* SOFT lifetime */
  112 
  113         u_int64_t seq;                  /* sequence number */
  114         pid_t pid;                      /* message's pid */
  115 
  116         struct secashead *sah;          /* back pointer to the secashead */
  117 
  118         u_int32_t id;                   /* SA id */
  119 };
  120 
  121 /* replay prevention */
  122 struct secreplay {
  123         u_int64_t count;
  124         u_int wsize;            /* window size, i.g. 4 bytes */
  125         u_int64_t seq;          /* used by sender */
  126         u_int64_t lastseq;      /* used by receiver */
  127         u_int8_t *bitmap;       /* used by receiver */
  128         int overflow;           /* what round does the counter take. */
  129 };
  130 
  131 /* socket table due to send PF_KEY messages. */
  132 struct secreg {
  133         LIST_ENTRY(secreg) chain;
  134 
  135         struct socket *so;
  136 };
  137 
  138 #ifndef IPSEC_NONBLOCK_ACQUIRE
  139 /* acquiring list table. */
  140 struct secacq {
  141         LIST_ENTRY(secacq) chain;
  142 
  143         struct secasindex saidx;
  144 
  145         u_int32_t seq;          /* sequence number */
  146         long created;           /* for lifetime */
  147         int count;              /* for lifetime */
  148 };
  149 #endif
  150 
  151 /* Sensitivity Level Specification */
  152 /* nothing */
  153 
  154 #define SADB_KILL_INTERVAL      600     /* six seconds */
  155 
  156 struct key_cb {
  157         int key_count;
  158         int any_count;
  159 };
  160 
  161 /* secpolicy */
  162 struct secpolicy;
  163 struct secpolicyindex;
  164 extern struct secpolicy *keydb_newsecpolicy(void);
  165 extern u_int32_t keydb_newspid(void);
  166 extern void keydb_delsecpolicy(struct secpolicy *);
  167 extern int keydb_setsecpolicyindex
  168         (struct secpolicy *, struct secpolicyindex *);
  169 /* secashead */
  170 extern struct secashead *keydb_newsecashead(void);
  171 extern void keydb_delsecashead(struct secashead *);
  172 /* secasvar */
  173 extern struct secasvar *keydb_newsecasvar(void);
  174 extern void keydb_delsecasvar(struct secasvar *);
  175 /* secreplay */
  176 extern struct secreplay *keydb_newsecreplay(size_t);
  177 extern void keydb_delsecreplay(struct secreplay *);
  178 /* secreg */
  179 extern struct secreg *keydb_newsecreg(void);
  180 extern void keydb_delsecreg(struct secreg *);
  181 
  182 #endif /* _KERNEL */
  183 
  184 #endif /* _NETKEY_KEYDB_H_ */

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