bsd/netkey/keydb.c

   1 /*      $KAME: keydb.c,v 1.61 2000/03/25 07:24:13 sumikawa 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 #if (defined(__FreeBSD__) && __FreeBSD__ >= 3) || defined(__NetBSD__)
  33 #include "opt_inet.h"
  34 #ifdef __NetBSD__
  35 #include "opt_ipsec.h"
  36 #endif
  37 #endif
  38
  39 #include <sys/types.h>
  40 #include <sys/socket.h>
  41 #include <sys/param.h>
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/malloc.h>
  45 #include <sys/errno.h>
  46 #include <sys/queue.h>
  47
  48 #include <net/if.h>
  49 #include <net/route.h>
  50
  51 #include <netinet/in.h>
  52
  53 #include <net/pfkeyv2.h>
  54 #include <netkey/keydb.h>
  55 #include <netinet6/ipsec.h>
  56
  57 #include <net/net_osdep.h>
  58
  59 #if defined(__FreeBSD__) && __FreeBSD__ >= 3
  60 MALLOC_DEFINE(M_SECA, "key mgmt", "security associations, key management");
  61 #endif
  62
  63 static void keydb_delsecasvar __P((struct secasvar *));
  64
  65 /*
  66  * secpolicy management
  67  */
  68 struct secpolicy *
  69 keydb_newsecpolicy()
  70 {
  71         struct secpolicy *p;
  72
  73         p = (struct secpolicy *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT);
  74         if (!p)
  75                 return p;
  76         bzero(p, sizeof(*p));
  77         return p;
  78 }
  79
  80 void
  81 keydb_delsecpolicy(p)
  82         struct secpolicy *p;
  83 {
  84
  85         _FREE(p, M_SECA);
  86 }
  87
  88 /*
  89  * secashead management
  90  */
  91 struct secashead *
  92 keydb_newsecashead()
  93 {
  94         struct secashead *p;
  95         int i;
  96
  97         p = (struct secashead *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT);
  98         if (!p)
  99                 return p;
 100         bzero(p, sizeof(*p));
 101         for (i = 0; i < sizeof(p->savtree)/sizeof(p->savtree[0]); i++)
 102                 LIST_INIT(&p->savtree[i]);
 103         return p;
 104 }
 105
 106 void
 107 keydb_delsecashead(p)
 108         struct secashead *p;
 109 {
 110
 111         _FREE(p, M_SECA);
 112 }
 113
 114 /*
 115  * secasvar management (reference counted)
 116  */
 117 struct secasvar *
 118 keydb_newsecasvar()
 119 {
 120         struct secasvar *p;
 121
 122         p = (struct secasvar *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT);
 123         if (!p)
 124                 return p;
 125         bzero(p, sizeof(*p));
 126         p->refcnt = 1;
 127         return p;
 128 }
 129
 130 void
 131 keydb_refsecasvar(p)
 132         struct secasvar *p;
 133 {
 134         int s;
 135
 136 #ifdef __NetBSD__
 137         s = splsoftnet();
 138 #else
 139         s = splnet();
 140 #endif
 141         p->refcnt++;
 142         splx(s);
 143 }
 144
 145 void
 146 keydb_freesecasvar(p)
 147         struct secasvar *p;
 148 {
 149         int s;
 150
 151 #ifdef __NetBSD__
 152         s = splsoftnet();
 153 #else
 154         s = splnet();
 155 #endif
 156         p->refcnt--;
 157         if (p->refcnt == 0)
 158                 keydb_delsecasvar(p);
 159         splx(s);
 160 }
 161
 162 static void
 163 keydb_delsecasvar(p)
 164         struct secasvar *p;
 165 {
 166
 167         if (p->refcnt)
 168                 panic("keydb_delsecasvar called with refcnt != 0");
 169
 170         _FREE(p, M_SECA);
 171 }
 172
 173 /*
 174  * secreplay management
 175  */
 176 struct secreplay *
 177 keydb_newsecreplay(wsize)
 178         size_t wsize;
 179 {
 180         struct secreplay *p;
 181
 182         p = (struct secreplay *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT);
 183         if (!p)
 184                 return p;
 185
 186         bzero(p, sizeof(*p));
 187         if (wsize != 0) {
 188                 p->bitmap = (caddr_t)_MALLOC(wsize, M_SECA, M_NOWAIT);
 189                 if (!p->bitmap) {
 190                         _FREE(p, M_SECA);
 191                         return NULL;
 192                 }
 193                 bzero(p->bitmap, wsize);
 194         }
 195         p->wsize = wsize;
 196         return p;
 197 }
 198
 199 void
 200 keydb_delsecreplay(p)
 201         struct secreplay *p;
 202 {
 203
 204         if (p->bitmap)
 205                 _FREE(p->bitmap, M_SECA);
 206         _FREE(p, M_SECA);
 207 }
 208
 209 /*
 210  * secreg management
 211  */
 212 struct secreg *
 213 keydb_newsecreg()
 214 {
 215         struct secreg *p;
 216
 217         p = (struct secreg *)_MALLOC(sizeof(*p), M_SECA, M_NOWAIT);
 218         if (p)
 219                 bzero(p, sizeof(*p));
 220         return p;
 221 }
 222
 223 void
 224 keydb_delsecreg(p)
 225         struct secreg *p;
 226 {
 227
 228         _FREE(p, M_SECA);
 229 }