| 1 | /*************************************************************************** |
| 2 | * |
| 3 | * This file is provided under a dual BSD/GPLv2 license. When using or |
| 4 | * redistributing this file, you may do so under either license. |
| 5 | * |
| 6 | * GPL LICENSE SUMMARY |
| 7 | * |
| 8 | * Copyright(c) 2007,2008 Intel Corporation. All rights reserved. |
| 9 | * |
| 10 | * This program is free software; you can redistribute it and/or modify |
| 11 | * it under the terms of version 2 of the GNU General Public License as |
| 12 | * published by the Free Software Foundation. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, but |
| 15 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 17 | * General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| 22 | * The full GNU General Public License is included in this distribution |
| 23 | * in the file called LICENSE.GPL. |
| 24 | * |
| 25 | * Contact Information: |
| 26 | * Intel Corporation |
| 27 | * |
| 28 | * BSD LICENSE |
| 29 | * |
| 30 | * Copyright(c) 2007,2008 Intel Corporation. All rights reserved. |
| 31 | * All rights reserved. |
| 32 | * |
| 33 | * Redistribution and use in source and binary forms, with or without |
| 34 | * modification, are permitted provided that the following conditions |
| 35 | * are met: |
| 36 | * |
| 37 | * * Redistributions of source code must retain the above copyright |
| 38 | * notice, this list of conditions and the following disclaimer. |
| 39 | * * Redistributions in binary form must reproduce the above copyright |
| 40 | * notice, this list of conditions and the following disclaimer in |
| 41 | * the documentation and/or other materials provided with the |
| 42 | * distribution. |
| 43 | * * Neither the name of Intel Corporation nor the names of its |
| 44 | * contributors may be used to endorse or promote products derived |
| 45 | * from this software without specific prior written permission. |
| 46 | * |
| 47 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 48 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 49 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 50 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 51 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 52 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 53 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 54 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 55 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 56 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 57 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 58 | * |
| 59 | * |
| 60 | * version: Security.L.1.0.130 |
| 61 | * |
| 62 | ***************************************************************************/ |
| 63 | |
| 64 | /* |
| 65 | * OCF drv driver header file for the Intel ICP processor. |
| 66 | */ |
| 67 | |
| 68 | #ifndef ICP_OCF_H |
| 69 | #define ICP_OCF_H |
| 70 | |
| 71 | #include <linux/crypto.h> |
| 72 | #include <linux/delay.h> |
| 73 | #include <linux/skbuff.h> |
| 74 | |
| 75 | #include "cryptodev.h" |
| 76 | #include "uio.h" |
| 77 | |
| 78 | #include "cpa.h" |
| 79 | #include "cpa_cy_im.h" |
| 80 | #include "cpa_cy_sym.h" |
| 81 | #include "cpa_cy_rand.h" |
| 82 | #include "cpa_cy_dh.h" |
| 83 | #include "cpa_cy_rsa.h" |
| 84 | #include "cpa_cy_ln.h" |
| 85 | #include "cpa_cy_common.h" |
| 86 | #include "cpa_cy_dsa.h" |
| 87 | |
| 88 | #define NUM_BITS_IN_BYTE (8) |
| 89 | #define NUM_BITS_IN_BYTE_MINUS_ONE (NUM_BITS_IN_BYTE -1) |
| 90 | #define INVALID_DRIVER_ID (-1) |
| 91 | #define RETURN_RAND_NUM_GEN_FAILED (-1) |
| 92 | |
| 93 | /*This is define means only one operation can be chained to another |
| 94 | (resulting in one chain of two operations)*/ |
| 95 | #define MAX_NUM_OF_CHAINED_OPS (1) |
| 96 | /*This is the max block cipher initialisation vector*/ |
| 97 | #define MAX_IV_LEN_IN_BYTES (20) |
| 98 | /*This is used to check whether the OCF to this driver session limit has |
| 99 | been disabled*/ |
| 100 | #define NO_OCF_TO_DRV_MAX_SESSIONS (0) |
| 101 | |
| 102 | /*OCF values mapped here*/ |
| 103 | #define ICP_SHA1_DIGEST_SIZE_IN_BYTES (SHA1_HASH_LEN) |
| 104 | #define ICP_SHA256_DIGEST_SIZE_IN_BYTES (SHA2_256_HASH_LEN) |
| 105 | #define ICP_SHA384_DIGEST_SIZE_IN_BYTES (SHA2_384_HASH_LEN) |
| 106 | #define ICP_SHA512_DIGEST_SIZE_IN_BYTES (SHA2_512_HASH_LEN) |
| 107 | #define ICP_MD5_DIGEST_SIZE_IN_BYTES (MD5_HASH_LEN) |
| 108 | #define ARC4_COUNTER_LEN (ARC4_BLOCK_LEN) |
| 109 | |
| 110 | #define OCF_REGISTRATION_STATUS_SUCCESS (0) |
| 111 | #define OCF_ZERO_FUNCTIONALITY_REGISTERED (0) |
| 112 | #define ICP_OCF_DRV_NO_CRYPTO_PROCESS_ERROR (0) |
| 113 | #define ICP_OCF_DRV_STATUS_SUCCESS (0) |
| 114 | #define ICP_OCF_DRV_STATUS_FAIL (1) |
| 115 | |
| 116 | /*Turn on/off debug options*/ |
| 117 | #define ICP_OCF_PRINT_DEBUG_MESSAGES (0) |
| 118 | #define ICP_OCF_PRINT_KERN_ALERT (1) |
| 119 | #define ICP_OCF_PRINT_KERN_ERRS (1) |
| 120 | |
| 121 | /*DSA Prime Q size in bytes (as defined in the standard) */ |
| 122 | #define DSA_RS_SIGN_PRIMEQ_SIZE_IN_BYTES (20) |
| 123 | |
| 124 | /*MACRO DEFINITIONS*/ |
| 125 | |
| 126 | #define BITS_TO_BYTES(bytes, bits) \ |
| 127 | bytes = (bits + NUM_BITS_IN_BYTE_MINUS_ONE) / NUM_BITS_IN_BYTE |
| 128 | |
| 129 | #define ICP_CACHE_CREATE(cache_ID, cache_name) \ |
| 130 | kmem_cache_create(cache_ID, sizeof(cache_name),0, \ |
| 131 | SLAB_HWCACHE_ALIGN, NULL, NULL); |
| 132 | |
| 133 | #define ICP_CACHE_NULL_CHECK(slab_zone) \ |
| 134 | { \ |
| 135 | if(NULL == slab_zone){ \ |
| 136 | icp_ocfDrvFreeCaches(); \ |
| 137 | EPRINTK("%s() line %d: Not enough memory!\n", \ |
| 138 | __FUNCTION__, __LINE__); \ |
| 139 | return ENOMEM; \ |
| 140 | } \ |
| 141 | } |
| 142 | |
| 143 | #define ICP_CACHE_DESTROY(slab_zone) \ |
| 144 | { \ |
| 145 | if(NULL != slab_zone){ \ |
| 146 | kmem_cache_destroy(slab_zone); \ |
| 147 | slab_zone = NULL; \ |
| 148 | } \ |
| 149 | } |
| 150 | |
| 151 | #define ICP_REGISTER_SYM_FUNCTIONALITY_WITH_OCF(alg) \ |
| 152 | { \ |
| 153 | if(OCF_REGISTRATION_STATUS_SUCCESS == \ |
| 154 | crypto_register(icp_ocfDrvDriverId, \ |
| 155 | alg, \ |
| 156 | 0, \ |
| 157 | 0)) { \ |
| 158 | ocfStatus++; \ |
| 159 | } \ |
| 160 | } |
| 161 | |
| 162 | #define ICP_REGISTER_ASYM_FUNCTIONALITY_WITH_OCF(alg) \ |
| 163 | { \ |
| 164 | if(OCF_REGISTRATION_STATUS_SUCCESS == \ |
| 165 | crypto_kregister(icp_ocfDrvDriverId, \ |
| 166 | alg, \ |
| 167 | 0)){ \ |
| 168 | ocfStatus++; \ |
| 169 | } \ |
| 170 | } |
| 171 | |
| 172 | #if ICP_OCF_PRINT_DEBUG_MESSAGES == 1 |
| 173 | #define DPRINTK(args...) \ |
| 174 | { \ |
| 175 | printk(args); \ |
| 176 | } |
| 177 | |
| 178 | #else //ICP_OCF_PRINT_DEBUG_MESSAGES == 1 |
| 179 | |
| 180 | #define DPRINTK(args...) |
| 181 | |
| 182 | #endif //ICP_OCF_PRINT_DEBUG_MESSAGES == 1 |
| 183 | |
| 184 | #if ICP_OCF_PRINT_KERN_ALERT == 1 |
| 185 | #define APRINTK(args...) \ |
| 186 | { \ |
| 187 | printk(KERN_ALERT args); \ |
| 188 | } |
| 189 | |
| 190 | #else //ICP_OCF_PRINT_KERN_ALERT == 1 |
| 191 | |
| 192 | #define APRINTK(args...) |
| 193 | |
| 194 | #endif //ICP_OCF_PRINT_KERN_ALERT == 1 |
| 195 | |
| 196 | #if ICP_OCF_PRINT_KERN_ERRS == 1 |
| 197 | #define EPRINTK(args...) \ |
| 198 | { \ |
| 199 | printk(KERN_ERR args); \ |
| 200 | } |
| 201 | |
| 202 | #else //ICP_OCF_PRINT_KERN_ERRS == 1 |
| 203 | |
| 204 | #define EPRINTK(args...) |
| 205 | |
| 206 | #endif //ICP_OCF_PRINT_KERN_ERRS == 1 |
| 207 | |
| 208 | #define IPRINTK(args...) \ |
| 209 | { \ |
| 210 | printk(KERN_INFO args); \ |
| 211 | } |
| 212 | |
| 213 | /*END OF MACRO DEFINITIONS*/ |
| 214 | |
| 215 | typedef enum { |
| 216 | ICP_OCF_DRV_ALG_CIPHER = 0, |
| 217 | ICP_OCF_DRV_ALG_HASH |
| 218 | } icp_ocf_drv_alg_type_t; |
| 219 | |
| 220 | /* These are all defined in icp_common.c */ |
| 221 | extern atomic_t lac_session_failed_dereg_count; |
| 222 | extern atomic_t icp_ocfDrvIsExiting; |
| 223 | extern atomic_t num_ocf_to_drv_registered_sessions; |
| 224 | |
| 225 | /*These are use inputs used in icp_sym.c and icp_common.c |
| 226 | They are instantiated in icp_common.c*/ |
| 227 | extern int max_sessions; |
| 228 | |
| 229 | extern int32_t icp_ocfDrvDriverId; |
| 230 | extern struct list_head icp_ocfDrvGlobalSymListHead; |
| 231 | extern struct list_head icp_ocfDrvGlobalSymListHead_FreeMemList; |
| 232 | extern struct workqueue_struct *icp_ocfDrvFreeLacSessionWorkQ; |
| 233 | extern spinlock_t icp_ocfDrvSymSessInfoListSpinlock; |
| 234 | extern rwlock_t icp_kmem_cache_destroy_alloc_lock; |
| 235 | |
| 236 | /*Slab zones for symettric functionality, instantiated in icp_common.c*/ |
| 237 | extern struct kmem_cache *drvSessionData_zone; |
| 238 | extern struct kmem_cache *drvOpData_zone; |
| 239 | |
| 240 | /*Slabs zones for asymettric functionality, instantiated in icp_common.c*/ |
| 241 | extern struct kmem_cache *drvDH_zone; |
| 242 | extern struct kmem_cache *drvLnModExp_zone; |
| 243 | extern struct kmem_cache *drvRSADecrypt_zone; |
| 244 | extern struct kmem_cache *drvRSAPrivateKey_zone; |
| 245 | extern struct kmem_cache *drvDSARSSign_zone; |
| 246 | extern struct kmem_cache *drvDSARSSignKValue_zone; |
| 247 | extern struct kmem_cache *drvDSAVerify_zone; |
| 248 | |
| 249 | /*Slab zones for flatbuffers and bufferlist*/ |
| 250 | extern struct kmem_cache *drvFlatBuffer_zone; |
| 251 | |
| 252 | #define ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS (16) |
| 253 | |
| 254 | struct icp_drvBuffListInfo { |
| 255 | Cpa16U numBuffers; |
| 256 | Cpa32U metaSize; |
| 257 | Cpa32U metaOffset; |
| 258 | Cpa32U buffListSize; |
| 259 | }; |
| 260 | extern struct icp_drvBuffListInfo defBuffListInfo; |
| 261 | |
| 262 | /* |
| 263 | * This struct is used to keep a reference to the relevant node in the list |
| 264 | * of sessionData structs, to the buffer type required by OCF and to the OCF |
| 265 | * provided crp struct that needs to be returned. All this info is needed in |
| 266 | * the callback function. |
| 267 | * |
| 268 | * IV can sometimes be stored in non-contiguous memory (e.g. skbuff |
| 269 | * linked/frag list, therefore a contiguous memory space for the IV data must be |
| 270 | * created and passed to LAC |
| 271 | * |
| 272 | */ |
| 273 | struct icp_drvOpData { |
| 274 | CpaCySymOpData lacOpData; |
| 275 | uint32_t digestSizeInBytes; |
| 276 | struct cryptop *crp; |
| 277 | uint8_t bufferType; |
| 278 | uint8_t ivData[MAX_IV_LEN_IN_BYTES]; |
| 279 | uint16_t numBufferListArray; |
| 280 | CpaBufferList srcBuffer; |
| 281 | CpaFlatBuffer bufferListArray[ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS]; |
| 282 | CpaBoolean verifyResult; |
| 283 | }; |
| 284 | /*Values used to derisk chances of performs being called against |
| 285 | deregistered sessions (for which the slab page has been reclaimed) |
| 286 | This is not a fix - since page frames are reclaimed from a slab, one cannot |
| 287 | rely on that memory not being re-used by another app.*/ |
| 288 | typedef enum { |
| 289 | ICP_SESSION_INITIALISED = 0x5C5C5C, |
| 290 | ICP_SESSION_RUNNING = 0x005C00, |
| 291 | ICP_SESSION_DEREGISTERED = 0xC5C5C5 |
| 292 | } usage_derisk; |
| 293 | |
| 294 | /* |
| 295 | This is the OCF<->OCF_DRV session object: |
| 296 | |
| 297 | 1.The first member is a listNode. These session objects are added to a linked |
| 298 | list in order to make it easier to remove them all at session exit time. |
| 299 | 2.The second member is used to give the session object state and derisk the |
| 300 | possibility of OCF batch calls executing against a deregistered session (as |
| 301 | described above). |
| 302 | 3.The third member is a LAC<->OCF_DRV session handle (initialised with the first |
| 303 | perform request for that session). |
| 304 | 4.The fourth is the LAC session context. All the parameters for this structure |
| 305 | are only known when the first perform request for this session occurs. That is |
| 306 | why the OCF Tolapai Driver only registers a new LAC session at perform time |
| 307 | */ |
| 308 | struct icp_drvSessionData { |
| 309 | struct list_head listNode; |
| 310 | usage_derisk inUse; |
| 311 | CpaCySymSessionCtx sessHandle; |
| 312 | CpaCySymSessionSetupData lacSessCtx; |
| 313 | }; |
| 314 | |
| 315 | /* This struct is required for deferred session |
| 316 | deregistration as a work queue function can |
| 317 | only have one argument*/ |
| 318 | struct icp_ocfDrvFreeLacSession { |
| 319 | CpaCySymSessionCtx sessionToDeregister; |
| 320 | struct work_struct work; |
| 321 | }; |
| 322 | |
| 323 | int icp_ocfDrvNewSession(device_t dev, uint32_t * sild, struct cryptoini *cri); |
| 324 | |
| 325 | int icp_ocfDrvFreeLACSession(device_t dev, uint64_t sid); |
| 326 | |
| 327 | int icp_ocfDrvSymProcess(device_t dev, struct cryptop *crp, int hint); |
| 328 | |
| 329 | int icp_ocfDrvPkeProcess(device_t dev, struct cryptkop *krp, int hint); |
| 330 | |
| 331 | int icp_ocfDrvReadRandom(void *arg, uint32_t * buf, int maxwords); |
| 332 | |
| 333 | int icp_ocfDrvDeregRetry(CpaCySymSessionCtx sessionToDeregister); |
| 334 | |
| 335 | int icp_ocfDrvSkBuffToBufferList(struct sk_buff *skb, |
| 336 | CpaBufferList * bufferList); |
| 337 | |
| 338 | int icp_ocfDrvBufferListToSkBuff(CpaBufferList * bufferList, |
| 339 | struct sk_buff **skb); |
| 340 | |
| 341 | void icp_ocfDrvPtrAndLenToFlatBuffer(void *pData, uint32_t len, |
| 342 | CpaFlatBuffer * pFlatBuffer); |
| 343 | |
| 344 | void icp_ocfDrvPtrAndLenToBufferList(void *pDataIn, uint32_t length, |
| 345 | CpaBufferList * pBufferList); |
| 346 | |
| 347 | void icp_ocfDrvBufferListToPtrAndLen(CpaBufferList * pBufferList, |
| 348 | void **ppDataOut, uint32_t * pLength); |
| 349 | |
| 350 | int icp_ocfDrvBufferListMemInfo(uint16_t numBuffers, |
| 351 | struct icp_drvBuffListInfo *buffListInfo); |
| 352 | |
| 353 | uint16_t icp_ocfDrvGetSkBuffFrags(struct sk_buff *pSkb); |
| 354 | |
| 355 | void icp_ocfDrvFreeFlatBuffer(CpaFlatBuffer * pFlatBuffer); |
| 356 | |
| 357 | int icp_ocfDrvAllocMetaData(CpaBufferList * pBufferList, |
| 358 | const struct icp_drvOpData *pOpData); |
| 359 | |
| 360 | void icp_ocfDrvFreeMetaData(CpaBufferList * pBufferList); |
| 361 | |
| 362 | #endif |
| 363 | /* ICP_OCF_H */ |
| 364 | |
