spl->critical section conversion.
[dragonfly.git] / sys / netproto / key / keydb.c
CommitLineData
984263bc 1/* $FreeBSD: src/sys/netkey/keydb.c,v 1.1.2.1 2000/07/15 07:14:42 kris Exp $ */
68b13d6b 2/* $DragonFly: src/sys/netproto/key/keydb.c,v 1.7 2005/06/10 22:34:50 dillon Exp $ */
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3/* $KAME: keydb.c,v 1.64 2000/05/11 17:02:30 itojun Exp $ */
4
5/*
6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
7 * All rights reserved.
8 *
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
11 * are met:
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
17 * 3. Neither the name of the project nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#include "opt_inet.h"
35#include "opt_inet6.h"
36
7b95be2a 37#include <sys/param.h>
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38#include <sys/types.h>
39#include <sys/socket.h>
40#include <sys/param.h>
41#include <sys/systm.h>
42#include <sys/kernel.h>
43#include <sys/malloc.h>
44#include <sys/errno.h>
45#include <sys/queue.h>
68b13d6b 46#include <sys/thread2.h>
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47
48#include <net/if.h>
49#include <net/route.h>
50
51#include <netinet/in.h>
52
53#include <net/pfkeyv2.h>
1f2de5d4 54#include "keydb.h"
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55#include <netinet6/ipsec.h>
56
57#include <net/net_osdep.h>
58
59MALLOC_DEFINE(M_SECA, "key mgmt", "security associations, key management");
60
3e0c9cba 61static void keydb_delsecasvar (struct secasvar *);
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62
63/*
64 * secpolicy management
65 */
66struct secpolicy *
67keydb_newsecpolicy()
68{
69 struct secpolicy *p;
70
062eab50 71 p = malloc(sizeof(*p), M_SECA, M_INTWAIT | M_NULLOK);
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72 if (!p)
73 return p;
74 bzero(p, sizeof(*p));
75 return p;
76}
77
78void
79keydb_delsecpolicy(p)
80 struct secpolicy *p;
81{
82
83 free(p, M_SECA);
84}
85
86/*
87 * secashead management
88 */
89struct secashead *
90keydb_newsecashead()
91{
92 struct secashead *p;
93 int i;
94
062eab50 95 p = malloc(sizeof(*p), M_SECA, M_INTWAIT | M_NULLOK);
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96 if (!p)
97 return p;
98 bzero(p, sizeof(*p));
99 for (i = 0; i < sizeof(p->savtree)/sizeof(p->savtree[0]); i++)
100 LIST_INIT(&p->savtree[i]);
101 return p;
102}
103
104void
105keydb_delsecashead(p)
106 struct secashead *p;
107{
108
109 free(p, M_SECA);
110}
111
112/*
113 * secasvar management (reference counted)
114 */
115struct secasvar *
116keydb_newsecasvar()
117{
118 struct secasvar *p;
119
062eab50 120 p = malloc(sizeof(*p), M_SECA, M_INTWAIT | M_NULLOK);
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121 if (!p)
122 return p;
123 bzero(p, sizeof(*p));
124 p->refcnt = 1;
125 return p;
126}
127
128void
129keydb_refsecasvar(p)
130 struct secasvar *p;
131{
68b13d6b 132 crit_enter();
984263bc 133 p->refcnt++;
68b13d6b 134 crit_exit();
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135}
136
137void
138keydb_freesecasvar(p)
139 struct secasvar *p;
140{
68b13d6b 141 crit_enter();
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142 p->refcnt--;
143 /* negative refcnt will cause panic intentionally */
144 if (p->refcnt <= 0)
145 keydb_delsecasvar(p);
68b13d6b 146 crit_exit();
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147}
148
149static void
150keydb_delsecasvar(p)
151 struct secasvar *p;
152{
153
154 if (p->refcnt)
155 panic("keydb_delsecasvar called with refcnt != 0");
156
157 free(p, M_SECA);
158}
159
160/*
161 * secreplay management
162 */
163struct secreplay *
164keydb_newsecreplay(wsize)
165 size_t wsize;
166{
167 struct secreplay *p;
168
062eab50 169 p = malloc(sizeof(*p), M_SECA, M_INTWAIT | M_NULLOK);
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170 if (!p)
171 return p;
172
173 bzero(p, sizeof(*p));
174 if (wsize != 0) {
062eab50 175 p->bitmap = (caddr_t)malloc(wsize, M_SECA, M_INTWAIT | M_NULLOK);
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176 if (!p->bitmap) {
177 free(p, M_SECA);
178 return NULL;
179 }
180 bzero(p->bitmap, wsize);
181 }
182 p->wsize = wsize;
183 return p;
184}
185
186void
187keydb_delsecreplay(p)
188 struct secreplay *p;
189{
190
191 if (p->bitmap)
192 free(p->bitmap, M_SECA);
193 free(p, M_SECA);
194}
195
196/*
197 * secreg management
198 */
199struct secreg *
200keydb_newsecreg()
201{
202 struct secreg *p;
203
062eab50 204 p = malloc(sizeof(*p), M_SECA, M_INTWAIT | M_ZERO | M_NULLOK);
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205 return p;
206}
207
208void
209keydb_delsecreg(p)
210 struct secreg *p;
211{
212
213 free(p, M_SECA);
214}