ocryptodev.c revision 1.2.16.1
1 /* $NetBSD: ocryptodev.c,v 1.2.16.1 2011/03/05 15:10:48 bouyer Exp $ */ 2 /* $FreeBSD: src/sys/opencrypto/cryptodev.c,v 1.4.2.4 2003/06/03 00:09:02 sam Exp $ */ 3 /* $OpenBSD: cryptodev.c,v 1.53 2002/07/10 22:21:30 mickey Exp $ */ 4 5 /*- 6 * Copyright (c) 2008 The NetBSD Foundation, Inc. 7 * All rights reserved. 8 * 9 * This code is derived from software contributed to The NetBSD Foundation 10 * by Coyote Point Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 2001 Theo de Raadt 36 * 37 * Redistribution and use in source and binary forms, with or without 38 * modification, are permitted provided that the following conditions 39 * are met: 40 * 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. The name of the author may not be used to endorse or promote products 47 * derived from this software without specific prior written permission. 48 * 49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 50 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 51 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 52 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 53 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 54 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 55 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 56 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 57 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 58 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 59 * 60 * Effort sponsored in part by the Defense Advanced Research Projects 61 * Agency (DARPA) and Air Force Research Laboratory, Air Force 62 * Materiel Command, USAF, under agreement number F30602-01-2-0537. 63 * 64 */ 65 66 /* 67 * Implement backward compatibility IOCTLs in this module. 68 * 69 */ 70 71 #include <sys/cdefs.h> 72 __KERNEL_RCSID(0, "$NetBSD: ocryptodev.c,v 1.2.16.1 2011/03/05 15:10:48 bouyer Exp $"); 73 74 #include <sys/param.h> 75 #include <sys/systm.h> 76 #include <sys/kmem.h> 77 #include <sys/malloc.h> 78 #include <sys/mbuf.h> 79 #include <sys/pool.h> 80 #include <sys/sysctl.h> 81 #include <sys/file.h> 82 #include <sys/filedesc.h> 83 #include <sys/errno.h> 84 #include <sys/md5.h> 85 #include <sys/sha1.h> 86 #include <sys/conf.h> 87 #include <sys/device.h> 88 #include <sys/kauth.h> 89 #include <sys/select.h> 90 #include <sys/poll.h> 91 #include <sys/atomic.h> 92 93 #include "opt_ocf.h" 94 #include <opencrypto/cryptodev.h> 95 #include <opencrypto/cryptodev_internal.h> 96 #include <opencrypto/ocryptodev.h> 97 #include <opencrypto/xform.h> 98 99 static int ocryptodev_op(struct csession *, struct ocrypt_op *, 100 struct lwp *); 101 static int ocryptodev_mop(struct fcrypt *, struct ocrypt_n_op *, int, 102 struct lwp *); 103 static int ocryptodev_session(struct fcrypt *, struct osession_op *); 104 static int ocryptodev_msession(struct fcrypt *, struct osession_n_op *, int); 105 106 int 107 ocryptof_ioctl(struct file *fp, u_long cmd, void *data) 108 { 109 struct fcrypt *fcr = fp->f_data; 110 struct csession *cse; 111 struct osession_op *osop; 112 struct osession_n_op *osnop; 113 struct ocrypt_op *ocop; 114 struct ocrypt_mop *omop; 115 struct ocrypt_n_op *ocnop; 116 struct ocrypt_sgop *osgop; 117 118 int error = 0; 119 120 switch (cmd) { 121 case OCIOCGSESSION: 122 osop = (struct osession_op *)data; 123 error = ocryptodev_session(fcr, osop); 124 break; 125 case CIOCNGSESSION: 126 osgop = (struct ocrypt_sgop *)data; 127 osnop = kmem_alloc((osgop->count * 128 sizeof(struct osession_n_op)), KM_SLEEP); 129 error = copyin(osgop->sessions, osnop, osgop->count * 130 sizeof(struct osession_n_op)); 131 if (error) { 132 goto mbail; 133 } 134 135 error = ocryptodev_msession(fcr, osnop, osgop->count); 136 if (error) { 137 goto mbail; 138 } 139 140 error = copyout(osnop, osgop->sessions, osgop->count * 141 sizeof(struct osession_n_op)); 142 mbail: 143 kmem_free(osnop, osgop->count * sizeof(struct osession_n_op)); 144 break; 145 case OCIOCCRYPT: 146 mutex_spin_enter(&crypto_mtx); 147 ocop = (struct ocrypt_op *)data; 148 cse = cryptodev_csefind(fcr, ocop->ses); 149 mutex_spin_exit(&crypto_mtx); 150 if (cse == NULL) { 151 DPRINTF(("csefind failed\n")); 152 return EINVAL; 153 } 154 error = ocryptodev_op(cse, ocop, curlwp); 155 DPRINTF(("ocryptodev_op error = %d\n", error)); 156 break; 157 case OCIOCNCRYPTM: 158 omop = (struct ocrypt_mop *)data; 159 ocnop = kmem_alloc((omop->count * sizeof(struct ocrypt_n_op)), 160 KM_SLEEP); 161 error = copyin(omop->reqs, ocnop, 162 (omop->count * sizeof(struct ocrypt_n_op))); 163 if(!error) { 164 error = ocryptodev_mop(fcr, ocnop, omop->count, curlwp); 165 if (!error) { 166 error = copyout(ocnop, omop->reqs, 167 (omop->count * sizeof(struct ocrypt_n_op))); 168 } 169 } 170 kmem_free(ocnop, (omop->count * sizeof(struct ocrypt_n_op))); 171 break; 172 default: 173 DPRINTF(("invalid ioctl cmd 0x%lx\n", cmd)); 174 return EINVAL; 175 } 176 return error; 177 } 178 179 180 static int 181 ocryptodev_op(struct csession *cse, struct ocrypt_op *ocop, struct lwp *l) 182 { 183 struct crypt_op cop; 184 185 cop.ses = ocop->ses; 186 cop.op = ocop->op; 187 cop.flags = ocop->flags; 188 cop.len = ocop->len; 189 cop.src = ocop->src; 190 cop.dst = ocop->dst; 191 cop.mac = ocop->mac; 192 cop.iv = ocop->iv; 193 cop.dst_len = 0; 194 195 return cryptodev_op(cse, &cop, l); 196 }; 197 198 static int 199 ocryptodev_mop(struct fcrypt *fcr, 200 struct ocrypt_n_op *ocnop, 201 int count, struct lwp *l) 202 { 203 int res; 204 205 struct crypt_n_op cnop; 206 207 cnop.ses = ocnop->ses; 208 cnop.op = ocnop->op; 209 cnop.flags = ocnop->flags; 210 cnop.len = ocnop->len; 211 cnop.reqid = ocnop->reqid; 212 cnop.status = ocnop->status; 213 cnop.opaque = ocnop->opaque; 214 cnop.keylen = ocnop->keylen; 215 cnop.key = ocnop->key; 216 cnop.mackeylen = ocnop->mackeylen; 217 cnop.mackey = ocnop->mackey; 218 cnop.src = ocnop->src; 219 cnop.dst = ocnop->dst; 220 cnop.mac = ocnop->mac; 221 cnop.iv = ocnop->iv; 222 cnop.dst_len = 0; 223 res = cryptodev_mop(fcr, &cnop, count, l); 224 ocnop->reqid = cnop.reqid; 225 ocnop->status = cnop.status; 226 227 return res; 228 }; 229 230 231 static int 232 ocryptodev_session(struct fcrypt *fcr, struct osession_op *osop) 233 { 234 struct session_op sop; 235 int res; 236 237 sop.cipher = osop->cipher; 238 sop.mac = osop->mac; 239 sop.comp_alg = 0; 240 sop.keylen = osop->keylen; 241 sop.key = osop->key; 242 sop.mackeylen = osop->mackeylen; 243 sop.mackey = osop->mackey; 244 res = cryptodev_session(fcr, &sop); 245 osop->ses = sop.ses; 246 return res; 247 248 } 249 250 static int 251 ocryptodev_msession(struct fcrypt *fcr, struct osession_n_op *osn_ops, 252 int count) 253 { 254 int i; 255 256 for (i = 0; i < count; i++, osn_ops++) { 257 struct osession_op os_op; 258 os_op.cipher = osn_ops->cipher; 259 os_op.mac = osn_ops->mac; 260 os_op.keylen = osn_ops->keylen; 261 os_op.key = osn_ops->key; 262 os_op.mackeylen = osn_ops->mackeylen; 263 os_op.mackey = osn_ops->mackey; 264 265 osn_ops->status = ocryptodev_session(fcr, &os_op); 266 osn_ops->ses = os_op.ses; 267 } 268 269 return 0; 270 } 271
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