1 /* $NetBSD: ocryptodev.c,v 1.2 2009/03/26 01:52:24 mrg 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 2009/03/26 01:52:24 mrg 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/ocryptodev.h> 96 #include <opencrypto/xform.h> 97 98 static int ocryptodev_op(struct csession *, struct ocrypt_op *, 99 struct lwp *); 100 static int ocryptodev_mop(struct fcrypt *, struct ocrypt_n_op *, int, 101 struct lwp *); 102 static int ocryptodev_session(struct fcrypt *, struct osession_op *); 103 static int ocryptodev_msession(struct fcrypt *, struct osession_n_op *, int); 104 105 int 106 ocryptof_ioctl(struct file *fp, u_long cmd, void *data) 107 { 108 struct fcrypt *fcr = fp->f_data; 109 struct csession *cse; 110 struct osession_op *osop; 111 struct osession_n_op *osnop; 112 struct ocrypt_op *ocop; 113 struct ocrypt_mop *omop; 114 struct ocrypt_n_op *ocnop; 115 struct ocrypt_sgop *osgop; 116 117 int error = 0; 118 119 switch (cmd) { 120 case OCIOCGSESSION: 121 osop = (struct osession_op *)data; 122 error = ocryptodev_session(fcr, osop); 123 break; 124 case CIOCNGSESSION: 125 osgop = (struct ocrypt_sgop *)data; 126 osnop = kmem_alloc((osgop->count * 127 sizeof(struct osession_n_op)), KM_SLEEP); 128 error = copyin(osgop->sessions, osnop, osgop->count * 129 sizeof(struct osession_n_op)); 130 if (error) { 131 goto mbail; 132 } 133 134 error = ocryptodev_msession(fcr, osnop, osgop->count); 135 if (error) { 136 goto mbail; 137 } 138 139 error = copyout(osnop, osgop->sessions, osgop->count * 140 sizeof(struct osession_n_op)); 141 mbail: 142 kmem_free(osnop, osgop->count * sizeof(struct osession_n_op)); 143 break; 144 case OCIOCCRYPT: 145 mutex_spin_enter(&crypto_mtx); 146 ocop = (struct ocrypt_op *)data; 147 cse = cryptodev_csefind(fcr, ocop->ses); 148 mutex_spin_exit(&crypto_mtx); 149 if (cse == NULL) { 150 DPRINTF(("csefind failed\n")); 151 return EINVAL; 152 } 153 error = ocryptodev_op(cse, ocop, curlwp); 154 DPRINTF(("ocryptodev_op error = %d\n", error)); 155 break; 156 case OCIOCNCRYPTM: 157 omop = (struct ocrypt_mop *)data; 158 ocnop = kmem_alloc((omop->count * sizeof(struct ocrypt_n_op)), 159 KM_SLEEP); 160 error = copyin(omop->reqs, ocnop, 161 (omop->count * sizeof(struct ocrypt_n_op))); 162 if(!error) { 163 error = ocryptodev_mop(fcr, ocnop, omop->count, curlwp); 164 if (!error) { 165 error = copyout(ocnop, omop->reqs, 166 (omop->count * sizeof(struct ocrypt_n_op))); 167 } 168 } 169 kmem_free(ocnop, (omop->count * sizeof(struct ocrypt_n_op))); 170 break; 171 default: 172 DPRINTF(("invalid ioctl cmd 0x%lx\n", cmd)); 173 return EINVAL; 174 } 175 return error; 176 } 177 178 179 static int 180 ocryptodev_op(struct csession *cse, struct ocrypt_op *ocop, struct lwp *l) 181 { 182 struct crypt_op cop; 183 184 cop.ses = ocop->ses; 185 cop.op = ocop->op; 186 cop.flags = ocop->flags; 187 cop.len = ocop->len; 188 cop.src = ocop->src; 189 cop.dst = ocop->dst; 190 cop.mac = ocop->mac; 191 cop.iv = ocop->iv; 192 cop.dst_len = 0; 193 194 return cryptodev_op(cse, &cop, l); 195 }; 196 197 static int 198 ocryptodev_mop(struct fcrypt *fcr, 199 struct ocrypt_n_op *ocnop, 200 int count, struct lwp *l) 201 { 202 int res; 203 204 struct crypt_n_op cnop; 205 206 cnop.ses = ocnop->ses; 207 cnop.op = ocnop->op; 208 cnop.flags = ocnop->flags; 209 cnop.len = ocnop->len; 210 cnop.reqid = ocnop->reqid; 211 cnop.status = ocnop->status; 212 cnop.opaque = ocnop->opaque; 213 cnop.keylen = ocnop->keylen; 214 cnop.key = ocnop->key; 215 cnop.mackeylen = ocnop->mackeylen; 216 cnop.mackey = ocnop->mackey; 217 cnop.src = ocnop->src; 218 cnop.dst = ocnop->dst; 219 cnop.mac = ocnop->mac; 220 cnop.iv = ocnop->iv; 221 cnop.dst_len = 0; 222 res = cryptodev_mop(fcr, &cnop, count, l); 223 ocnop->reqid = cnop.reqid; 224 ocnop->status = cnop.status; 225 226 return res; 227 }; 228 229 230 static int 231 ocryptodev_session(struct fcrypt *fcr, struct osession_op *osop) 232 { 233 struct session_op sop; 234 int res; 235 236 sop.cipher = osop->cipher; 237 sop.mac = osop->mac; 238 sop.comp_alg = 0; 239 sop.keylen = osop->keylen; 240 sop.key = osop->key; 241 sop.mackeylen = osop->mackeylen; 242 sop.mackey = osop->mackey; 243 res = cryptodev_session(fcr, &sop); 244 osop->ses = sop.ses; 245 return res; 246 247 } 248 249 static int 250 ocryptodev_msession(struct fcrypt *fcr, struct osession_n_op *osn_ops, 251 int count) 252 { 253 int i; 254 255 for (i = 0; i < count; i++, osn_ops++) { 256 struct osession_op os_op; 257 os_op.cipher = osn_ops->cipher; 258 os_op.mac = osn_ops->mac; 259 os_op.keylen = osn_ops->keylen; 260 os_op.key = osn_ops->key; 261 os_op.mackeylen = osn_ops->mackeylen; 262 os_op.mackey = osn_ops->mackey; 263 264 osn_ops->status = ocryptodev_session(fcr, &os_op); 265 osn_ops->ses = os_op.ses; 266 } 267 268 return 0; 269 } 270