| /*************************************************************************** |
| * |
| * This file is provided under a dual BSD/GPLv2 license. When using or |
| * redistributing this file, you may do so under either license. |
| * |
| * GPL LICENSE SUMMARY |
| * |
| * Copyright(c) 2007,2008,2009 Intel Corporation. All rights reserved. |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of version 2 of the GNU General Public License as |
| * published by the Free Software Foundation. |
| * |
| * This program is distributed in the hope that it will be useful, but |
| * WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| * General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. |
| * The full GNU General Public License is included in this distribution |
| * in the file called LICENSE.GPL. |
| * |
| * Contact Information: |
| * Intel Corporation |
| * |
| * BSD LICENSE |
| * |
| * Copyright(c) 2007,2008,2009 Intel Corporation. All rights reserved. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in |
| * the documentation and/or other materials provided with the |
| * distribution. |
| * * Neither the name of Intel Corporation nor the names of its |
| * contributors may be used to endorse or promote products derived |
| * from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| * |
| * |
| * version: Security.L.1.0.2-229 |
| * |
| ***************************************************************************/ |
| /* |
| * An OCF module that uses the API for IntelĀ® QuickAssist Technology to do the |
| * cryptography. |
| * |
| * This driver requires the ICP Access Library that is available from Intel in |
| * order to operate. |
| */ |
| |
| #include "icp_ocf.h" |
| |
| /*This is the call back function for all symmetric cryptographic processes. |
| Its main functionality is to free driver crypto operation structure and to |
| call back to OCF*/ |
| static void |
| icp_ocfDrvSymCallBack(void *callbackTag, |
| CpaStatus status, |
| const CpaCySymOp operationType, |
| void *pOpData, |
| CpaBufferList * pDstBuffer, CpaBoolean verifyResult); |
| |
| /*This function is used to extract crypto processing information from the OCF |
| inputs, so as that it may be passed onto LAC*/ |
| static int |
| icp_ocfDrvProcessDataSetup(struct icp_drvOpData *drvOpData, |
| struct cryptodesc *crp_desc); |
| |
| /*This function checks whether the crp_desc argument pertains to a digest or a |
| cipher operation*/ |
| static int icp_ocfDrvAlgCheck(struct cryptodesc *crp_desc); |
| |
| /*This function copies all the passed in session context information and stores |
| it in a LAC context structure*/ |
| static int |
| icp_ocfDrvAlgorithmSetup(struct cryptoini *cri, |
| CpaCySymSessionSetupData * lacSessCtx); |
| |
| /*This function is used to free an OCF->OCF_DRV session object*/ |
| static void icp_ocfDrvFreeOCFSession(struct icp_drvSessionData *sessionData); |
| |
| /*max IOV buffs supported in a UIO structure*/ |
| #define NUM_IOV_SUPPORTED (1) |
| |
| /* Name : icp_ocfDrvSymCallBack |
| * |
| * Description : When this function returns it signifies that the LAC |
| * component has completed the relevant symmetric operation. |
| * |
| * Notes : The callbackTag is a pointer to an icp_drvOpData. This memory |
| * object was passed to LAC for the cryptographic processing and contains all |
| * the relevant information for cleaning up buffer handles etc. so that the |
| * OCF EP80579 Driver portion of this crypto operation can be fully completed. |
| */ |
| static void |
| icp_ocfDrvSymCallBack(void *callbackTag, |
| CpaStatus status, |
| const CpaCySymOp operationType, |
| void *pOpData, |
| CpaBufferList * pDstBuffer, CpaBoolean verifyResult) |
| { |
| struct cryptop *crp = NULL; |
| struct icp_drvOpData *temp_drvOpData = |
| (struct icp_drvOpData *)callbackTag; |
| uint64_t *tempBasePtr = NULL; |
| uint32_t tempLen = 0; |
| |
| if (NULL == temp_drvOpData) { |
| DPRINTK("%s(): The callback from the LAC component" |
| " has failed due to Null userOpaque data" |
| "(status == %d).\n", __FUNCTION__, status); |
| DPRINTK("%s(): Unable to call OCF back! \n", __FUNCTION__); |
| return; |
| } |
| |
| crp = temp_drvOpData->crp; |
| crp->crp_etype = ICP_OCF_DRV_NO_CRYPTO_PROCESS_ERROR; |
| |
| if (NULL == pOpData) { |
| DPRINTK("%s(): The callback from the LAC component" |
| " has failed due to Null Symmetric Op data" |
| "(status == %d).\n", __FUNCTION__, status); |
| crp->crp_etype = ECANCELED; |
| crypto_done(crp); |
| return; |
| } |
| |
| if (NULL == pDstBuffer) { |
| DPRINTK("%s(): The callback from the LAC component" |
| " has failed due to Null Dst Bufferlist data" |
| "(status == %d).\n", __FUNCTION__, status); |
| crp->crp_etype = ECANCELED; |
| crypto_done(crp); |
| return; |
| } |
| |
| if (CPA_STATUS_SUCCESS == status) { |
| |
| if (temp_drvOpData->bufferType == ICP_CRYPTO_F_PACKET_BUF) { |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvBufferListToPacketBuff(pDstBuffer, |
| (icp_packet_buffer_t |
| **) |
| & (crp->crp_buf))) { |
| EPRINTK("%s(): BufferList to SkBuff " |
| "conversion error.\n", __FUNCTION__); |
| crp->crp_etype = EPERM; |
| } |
| } else { |
| icp_ocfDrvBufferListToPtrAndLen(pDstBuffer, |
| (void **)&tempBasePtr, |
| &tempLen); |
| crp->crp_olen = (int)tempLen; |
| } |
| |
| } else { |
| DPRINTK("%s(): The callback from the LAC component has failed" |
| "(status == %d).\n", __FUNCTION__, status); |
| |
| crp->crp_etype = ECANCELED; |
| } |
| |
| if (temp_drvOpData->numBufferListArray > |
| ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS) { |
| icp_kfree(pDstBuffer->pBuffers); |
| } |
| icp_ocfDrvFreeMetaData(pDstBuffer); |
| ICP_CACHE_FREE(drvOpData_zone, temp_drvOpData); |
| |
| /* Invoke the OCF callback function */ |
| crypto_done(crp); |
| |
| return; |
| } |
| |
| /* Name : icp_ocfDrvNewSession |
| * |
| * Description : This function will create a new Driver<->OCF session |
| * |
| * Notes : LAC session registration happens during the first perform call. |
| * That is the first time we know all information about a given session. |
| */ |
| int icp_ocfDrvNewSession(icp_device_t dev, uint32_t * sid, |
| struct cryptoini *cri) |
| { |
| struct icp_drvSessionData *sessionData = NULL; |
| uint32_t delete_session = 0; |
| |
| /* The SID passed in should be our driver ID. We can return the */ |
| /* local ID (LID) which is a unique identifier which we can use */ |
| /* to differentiate between the encrypt/decrypt LAC session handles */ |
| if (NULL == sid) { |
| EPRINTK("%s(): Invalid input parameters - NULL sid.\n", |
| __FUNCTION__); |
| return EINVAL; |
| } |
| |
| if (NULL == cri) { |
| EPRINTK("%s(): Invalid input parameters - NULL cryptoini.\n", |
| __FUNCTION__); |
| return EINVAL; |
| } |
| |
| if (icp_ocfDrvDriverId != *sid) { |
| EPRINTK("%s(): Invalid input parameters - bad driver ID\n", |
| __FUNCTION__); |
| EPRINTK("\t sid = 0x08%p \n \t cri = 0x08%p \n", sid, cri); |
| return EINVAL; |
| } |
| |
| sessionData = icp_kmem_cache_zalloc(drvSessionData_zone, ICP_M_NOWAIT); |
| if (NULL == sessionData) { |
| DPRINTK("%s():No memory for Session Data\n", __FUNCTION__); |
| return ENOMEM; |
| } |
| |
| /*ENTER CRITICAL SECTION */ |
| icp_spin_lockbh_lock(&icp_ocfDrvSymSessInfoListSpinlock); |
| /*put this check in the spinlock so no new sessions can be added to the |
| linked list when we are exiting */ |
| if (CPA_TRUE == icp_atomic_read(&icp_ocfDrvIsExiting)) { |
| delete_session++; |
| |
| } else if (NO_OCF_TO_DRV_MAX_SESSIONS != max_sessions) { |
| if (icp_atomic_read(&num_ocf_to_drv_registered_sessions) >= |
| (max_sessions - |
| icp_atomic_read(&lac_session_failed_dereg_count))) { |
| delete_session++; |
| } else { |
| icp_atomic_inc(&num_ocf_to_drv_registered_sessions); |
| /* Add to session data linked list */ |
| ICP_LIST_ADD(sessionData, &icp_ocfDrvGlobalSymListHead, |
| listNode); |
| } |
| |
| } else if (NO_OCF_TO_DRV_MAX_SESSIONS == max_sessions) { |
| ICP_LIST_ADD(sessionData, &icp_ocfDrvGlobalSymListHead, |
| listNode); |
| } |
| |
| sessionData->inUse = ICP_SESSION_INITIALISED; |
| |
| /*EXIT CRITICAL SECTION */ |
| icp_spin_lockbh_unlock(&icp_ocfDrvSymSessInfoListSpinlock); |
| |
| if (delete_session) { |
| DPRINTK("%s():No Session handles available\n", __FUNCTION__); |
| ICP_CACHE_FREE(drvSessionData_zone, sessionData); |
| return EPERM; |
| } |
| |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvAlgorithmSetup(cri, &(sessionData->lacSessCtx))) { |
| DPRINTK("%s():algorithm not supported\n", __FUNCTION__); |
| icp_ocfDrvFreeOCFSession(sessionData); |
| return EINVAL; |
| } |
| |
| if (cri->cri_next) { |
| if (cri->cri_next->cri_next != NULL) { |
| DPRINTK("%s():only two chained algorithms supported\n", |
| __FUNCTION__); |
| icp_ocfDrvFreeOCFSession(sessionData); |
| return EPERM; |
| } |
| |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvAlgorithmSetup(cri->cri_next, |
| &(sessionData->lacSessCtx))) { |
| DPRINTK("%s():second algorithm not supported\n", |
| __FUNCTION__); |
| icp_ocfDrvFreeOCFSession(sessionData); |
| return EINVAL; |
| } |
| |
| sessionData->lacSessCtx.symOperation = |
| CPA_CY_SYM_OP_ALGORITHM_CHAINING; |
| } |
| |
| *sid = (uint32_t) sessionData; |
| |
| return ICP_OCF_DRV_STATUS_SUCCESS; |
| } |
| |
| /* Name : icp_ocfDrvAlgorithmSetup |
| * |
| * Description : This function builds the session context data from the |
| * information supplied through OCF. Algorithm chain order and whether the |
| * session is Encrypt/Decrypt can only be found out at perform time however, so |
| * the session is registered with LAC at that time. |
| */ |
| static int |
| icp_ocfDrvAlgorithmSetup(struct cryptoini *cri, |
| CpaCySymSessionSetupData * lacSessCtx) |
| { |
| |
| lacSessCtx->sessionPriority = CPA_CY_PRIORITY_NORMAL; |
| |
| switch (cri->cri_alg) { |
| |
| case CRYPTO_NULL_CBC: |
| DPRINTK("%s(): NULL CBC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_CIPHER; |
| lacSessCtx->cipherSetupData.cipherAlgorithm = |
| CPA_CY_SYM_CIPHER_NULL; |
| lacSessCtx->cipherSetupData.cipherKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->cipherSetupData.pCipherKey = cri->cri_key; |
| break; |
| |
| case CRYPTO_DES_CBC: |
| DPRINTK("%s(): DES CBC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_CIPHER; |
| lacSessCtx->cipherSetupData.cipherAlgorithm = |
| CPA_CY_SYM_CIPHER_DES_CBC; |
| lacSessCtx->cipherSetupData.cipherKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->cipherSetupData.pCipherKey = cri->cri_key; |
| break; |
| |
| case CRYPTO_3DES_CBC: |
| DPRINTK("%s(): 3DES CBC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_CIPHER; |
| lacSessCtx->cipherSetupData.cipherAlgorithm = |
| CPA_CY_SYM_CIPHER_3DES_CBC; |
| lacSessCtx->cipherSetupData.cipherKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->cipherSetupData.pCipherKey = cri->cri_key; |
| break; |
| |
| case CRYPTO_AES_CBC: |
| DPRINTK("%s(): AES CBC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_CIPHER; |
| lacSessCtx->cipherSetupData.cipherAlgorithm = |
| CPA_CY_SYM_CIPHER_AES_CBC; |
| lacSessCtx->cipherSetupData.cipherKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->cipherSetupData.pCipherKey = cri->cri_key; |
| break; |
| |
| case CRYPTO_ARC4: |
| DPRINTK("%s(): ARC4\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_CIPHER; |
| lacSessCtx->cipherSetupData.cipherAlgorithm = |
| CPA_CY_SYM_CIPHER_ARC4; |
| lacSessCtx->cipherSetupData.cipherKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->cipherSetupData.pCipherKey = cri->cri_key; |
| break; |
| |
| case CRYPTO_SHA1: |
| DPRINTK("%s(): SHA1\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = CPA_CY_SYM_HASH_SHA1; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA1_DIGEST_SIZE_IN_BYTES); |
| |
| break; |
| |
| case CRYPTO_SHA1_HMAC: |
| DPRINTK("%s(): SHA1_HMAC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = CPA_CY_SYM_HASH_SHA1; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA1_DIGEST_SIZE_IN_BYTES); |
| lacSessCtx->hashSetupData.authModeSetupData.authKey = |
| cri->cri_key; |
| lacSessCtx->hashSetupData.authModeSetupData.authKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->hashSetupData.authModeSetupData.aadLenInBytes = 0; |
| |
| break; |
| |
| case CRYPTO_SHA2_256: |
| DPRINTK("%s(): SHA256\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = |
| CPA_CY_SYM_HASH_SHA256; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA256_DIGEST_SIZE_IN_BYTES); |
| |
| break; |
| |
| case CRYPTO_SHA2_256_HMAC: |
| DPRINTK("%s(): SHA256_HMAC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = |
| CPA_CY_SYM_HASH_SHA256; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA256_DIGEST_SIZE_IN_BYTES); |
| lacSessCtx->hashSetupData.authModeSetupData.authKey = |
| cri->cri_key; |
| lacSessCtx->hashSetupData.authModeSetupData.authKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->hashSetupData.authModeSetupData.aadLenInBytes = 0; |
| |
| break; |
| |
| case CRYPTO_SHA2_384: |
| DPRINTK("%s(): SHA384\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = |
| CPA_CY_SYM_HASH_SHA384; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA384_DIGEST_SIZE_IN_BYTES); |
| |
| break; |
| |
| case CRYPTO_SHA2_384_HMAC: |
| DPRINTK("%s(): SHA384_HMAC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = |
| CPA_CY_SYM_HASH_SHA384; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA384_DIGEST_SIZE_IN_BYTES); |
| lacSessCtx->hashSetupData.authModeSetupData.authKey = |
| cri->cri_key; |
| lacSessCtx->hashSetupData.authModeSetupData.authKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->hashSetupData.authModeSetupData.aadLenInBytes = 0; |
| |
| break; |
| |
| case CRYPTO_SHA2_512: |
| DPRINTK("%s(): SHA512\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = |
| CPA_CY_SYM_HASH_SHA512; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA512_DIGEST_SIZE_IN_BYTES); |
| |
| break; |
| |
| case CRYPTO_SHA2_512_HMAC: |
| DPRINTK("%s(): SHA512_HMAC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = |
| CPA_CY_SYM_HASH_SHA512; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_SHA512_DIGEST_SIZE_IN_BYTES); |
| lacSessCtx->hashSetupData.authModeSetupData.authKey = |
| cri->cri_key; |
| lacSessCtx->hashSetupData.authModeSetupData.authKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->hashSetupData.authModeSetupData.aadLenInBytes = 0; |
| |
| break; |
| |
| case CRYPTO_MD5: |
| DPRINTK("%s(): MD5\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = CPA_CY_SYM_HASH_MD5; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_PLAIN; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_MD5_DIGEST_SIZE_IN_BYTES); |
| |
| break; |
| |
| case CRYPTO_MD5_HMAC: |
| DPRINTK("%s(): MD5_HMAC\n", __FUNCTION__); |
| lacSessCtx->symOperation = CPA_CY_SYM_OP_HASH; |
| lacSessCtx->hashSetupData.hashAlgorithm = CPA_CY_SYM_HASH_MD5; |
| lacSessCtx->hashSetupData.hashMode = CPA_CY_SYM_HASH_MODE_AUTH; |
| lacSessCtx->hashSetupData.digestResultLenInBytes = |
| (cri->cri_mlen ? |
| cri->cri_mlen : ICP_MD5_DIGEST_SIZE_IN_BYTES); |
| lacSessCtx->hashSetupData.authModeSetupData.authKey = |
| cri->cri_key; |
| lacSessCtx->hashSetupData.authModeSetupData.authKeyLenInBytes = |
| cri->cri_klen / NUM_BITS_IN_BYTE; |
| lacSessCtx->hashSetupData.authModeSetupData.aadLenInBytes = 0; |
| |
| break; |
| |
| default: |
| DPRINTK("%s(): ALG Setup FAIL\n", __FUNCTION__); |
| return ICP_OCF_DRV_STATUS_FAIL; |
| } |
| |
| return ICP_OCF_DRV_STATUS_SUCCESS; |
| } |
| |
| /* Name : icp_ocfDrvFreeOCFSession |
| * |
| * Description : This function deletes all existing Session data representing |
| * the Cryptographic session established between OCF and this driver. This |
| * also includes freeing the memory allocated for the session context. The |
| * session object is also removed from the session linked list. |
| */ |
| static void icp_ocfDrvFreeOCFSession(struct icp_drvSessionData *sessionData) |
| { |
| |
| sessionData->inUse = ICP_SESSION_DEREGISTERED; |
| |
| /*ENTER CRITICAL SECTION */ |
| icp_spin_lockbh_lock(&icp_ocfDrvSymSessInfoListSpinlock); |
| |
| if (CPA_TRUE == icp_atomic_read(&icp_ocfDrvIsExiting)) { |
| /*If the Driver is exiting, allow that process to |
| handle any deletions */ |
| /*EXIT CRITICAL SECTION */ |
| icp_spin_lockbh_unlock(&icp_ocfDrvSymSessInfoListSpinlock); |
| return; |
| } |
| |
| icp_atomic_dec(&num_ocf_to_drv_registered_sessions); |
| |
| ICP_LIST_DEL(sessionData, listNode); |
| |
| /*EXIT CRITICAL SECTION */ |
| icp_spin_lockbh_unlock(&icp_ocfDrvSymSessInfoListSpinlock); |
| |
| if (NULL != sessionData->sessHandle) { |
| icp_kfree(sessionData->sessHandle); |
| } |
| ICP_CACHE_FREE(drvSessionData_zone, sessionData); |
| } |
| |
| /* Name : icp_ocfDrvFreeLACSession |
| * |
| * Description : This attempts to deregister a LAC session. If it fails, the |
| * deregistation retry function is called. |
| */ |
| int icp_ocfDrvFreeLACSession(icp_device_t dev, uint64_t sid) |
| { |
| CpaCySymSessionCtx sessionToDeregister = NULL; |
| struct icp_drvSessionData *sessionData = NULL; |
| CpaStatus lacStatus = CPA_STATUS_SUCCESS; |
| int retval = 0; |
| |
| sessionData = (struct icp_drvSessionData *)CRYPTO_SESID2LID(sid); |
| if (NULL == sessionData) { |
| EPRINTK("%s(): OCF Free session called with Null Session ID.\n", |
| __FUNCTION__); |
| return EINVAL; |
| } |
| |
| sessionToDeregister = sessionData->sessHandle; |
| |
| if ((ICP_SESSION_INITIALISED != sessionData->inUse) && |
| (ICP_SESSION_RUNNING != sessionData->inUse) && |
| (ICP_SESSION_DEREGISTERED != sessionData->inUse)) { |
| DPRINTK("%s() Session not initialised.\n", __FUNCTION__); |
| return EINVAL; |
| } |
| |
| if (ICP_SESSION_RUNNING == sessionData->inUse) { |
| lacStatus = cpaCySymRemoveSession(CPA_INSTANCE_HANDLE_SINGLE, |
| sessionToDeregister); |
| if (CPA_STATUS_RETRY == lacStatus) { |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvDeregRetry(&sessionToDeregister)) { |
| /* the retry function increments the |
| dereg failed count */ |
| DPRINTK("%s(): LAC failed to deregister the " |
| "session. (localSessionId= %p)\n", |
| __FUNCTION__, sessionToDeregister); |
| retval = EPERM; |
| } |
| |
| } else if (CPA_STATUS_SUCCESS != lacStatus) { |
| DPRINTK("%s(): LAC failed to deregister the session. " |
| "localSessionId= %p, lacStatus = %d\n", |
| __FUNCTION__, sessionToDeregister, lacStatus); |
| icp_atomic_inc(&lac_session_failed_dereg_count); |
| retval = EPERM; |
| } |
| } else { |
| DPRINTK("%s() Session not registered with LAC.\n", |
| __FUNCTION__); |
| } |
| |
| icp_ocfDrvFreeOCFSession(sessionData); |
| return retval; |
| |
| } |
| |
| /* Name : icp_ocfDrvAlgCheck |
| * |
| * Description : This function checks whether the cryptodesc argument pertains |
| * to a sym or hash function |
| */ |
| static int icp_ocfDrvAlgCheck(struct cryptodesc *crp_desc) |
| { |
| |
| if (crp_desc->crd_alg == CRYPTO_3DES_CBC || |
| crp_desc->crd_alg == CRYPTO_AES_CBC || |
| crp_desc->crd_alg == CRYPTO_DES_CBC || |
| crp_desc->crd_alg == CRYPTO_NULL_CBC || |
| crp_desc->crd_alg == CRYPTO_ARC4) { |
| return ICP_OCF_DRV_ALG_CIPHER; |
| } |
| |
| return ICP_OCF_DRV_ALG_HASH; |
| } |
| |
| /* Name : icp_ocfDrvSymProcess |
| * |
| * Description : This function will map symmetric functionality calls from OCF |
| * to the LAC API. It will also allocate memory to store the session context. |
| * |
| * Notes: If it is the first perform call for a given session, then a LAC |
| * session is registered. After the session is registered, no checks as |
| * to whether session paramaters have changed (e.g. alg chain order) are |
| * done. |
| */ |
| int icp_ocfDrvSymProcess(icp_device_t dev, struct cryptop *crp, int hint) |
| { |
| struct icp_drvSessionData *sessionData = NULL; |
| struct icp_drvOpData *drvOpData = NULL; |
| CpaStatus lacStatus = CPA_STATUS_SUCCESS; |
| Cpa32U sessionCtxSizeInBytes = 0; |
| |
| if (NULL == crp) { |
| DPRINTK("%s(): Invalid input parameters, cryptop is NULL\n", |
| __FUNCTION__); |
| return EINVAL; |
| } |
| |
| if (NULL == crp->crp_desc) { |
| DPRINTK("%s(): Invalid input parameters, no crp_desc attached " |
| "to crp\n", __FUNCTION__); |
| crp->crp_etype = EINVAL; |
| return EINVAL; |
| } |
| |
| if (NULL == crp->crp_buf) { |
| DPRINTK("%s(): Invalid input parameters, no buffer attached " |
| "to crp\n", __FUNCTION__); |
| crp->crp_etype = EINVAL; |
| return EINVAL; |
| } |
| |
| if (CPA_TRUE == icp_atomic_read(&icp_ocfDrvIsExiting)) { |
| crp->crp_etype = EFAULT; |
| return EFAULT; |
| } |
| |
| sessionData = (struct icp_drvSessionData *) |
| (CRYPTO_SESID2LID(crp->crp_sid)); |
| if (NULL == sessionData) { |
| DPRINTK("%s(): Invalid input parameters, Null Session ID \n", |
| __FUNCTION__); |
| crp->crp_etype = EINVAL; |
| return EINVAL; |
| } |
| |
| /*If we get a request against a deregisted session, cancel operation*/ |
| if (ICP_SESSION_DEREGISTERED == sessionData->inUse) { |
| DPRINTK("%s(): Session ID %d was deregistered \n", |
| __FUNCTION__, (int)(CRYPTO_SESID2LID(crp->crp_sid))); |
| crp->crp_etype = EFAULT; |
| return EFAULT; |
| } |
| |
| /*If none of the session states are set, then the session structure was either |
| not initialised properly or we are reading from a freed memory area (possible |
| due to OCF batch mode not removing queued requests against deregistered |
| sessions*/ |
| if (ICP_SESSION_INITIALISED != sessionData->inUse && |
| ICP_SESSION_RUNNING != sessionData->inUse) { |
| DPRINTK("%s(): Session - ID %d - not properly initialised or " |
| "memory freed back to the kernel \n", |
| __FUNCTION__, (int)(CRYPTO_SESID2LID(crp->crp_sid))); |
| crp->crp_etype = EINVAL; |
| return EINVAL; |
| } |
| |
| /*For the below checks, remember error checking is already done in LAC. |
| We're not validating inputs subsequent to registration */ |
| if (sessionData->inUse == ICP_SESSION_INITIALISED) { |
| DPRINTK("%s(): Initialising session\n", __FUNCTION__); |
| |
| if (NULL != crp->crp_desc->crd_next) { |
| if (ICP_OCF_DRV_ALG_CIPHER == |
| icp_ocfDrvAlgCheck(crp->crp_desc)) { |
| |
| sessionData->lacSessCtx.algChainOrder = |
| CPA_CY_SYM_ALG_CHAIN_ORDER_CIPHER_THEN_HASH; |
| |
| if (crp->crp_desc->crd_flags & CRD_F_ENCRYPT) { |
| sessionData->lacSessCtx.cipherSetupData. |
| cipherDirection = |
| CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT; |
| } else { |
| sessionData->lacSessCtx.cipherSetupData. |
| cipherDirection = |
| CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT; |
| } |
| } else { |
| sessionData->lacSessCtx.algChainOrder = |
| CPA_CY_SYM_ALG_CHAIN_ORDER_HASH_THEN_CIPHER; |
| |
| if (crp->crp_desc->crd_next->crd_flags & |
| CRD_F_ENCRYPT) { |
| sessionData->lacSessCtx.cipherSetupData. |
| cipherDirection = |
| CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT; |
| } else { |
| sessionData->lacSessCtx.cipherSetupData. |
| cipherDirection = |
| CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT; |
| } |
| |
| } |
| |
| } else if (ICP_OCF_DRV_ALG_CIPHER == |
| icp_ocfDrvAlgCheck(crp->crp_desc)) { |
| if (crp->crp_desc->crd_flags & CRD_F_ENCRYPT) { |
| sessionData->lacSessCtx.cipherSetupData. |
| cipherDirection = |
| CPA_CY_SYM_CIPHER_DIRECTION_ENCRYPT; |
| } else { |
| sessionData->lacSessCtx.cipherSetupData. |
| cipherDirection = |
| CPA_CY_SYM_CIPHER_DIRECTION_DECRYPT; |
| } |
| |
| } |
| |
| /*No action required for standalone Auth here */ |
| |
| /* Allocate memory for SymSessionCtx before the Session Registration */ |
| lacStatus = |
| cpaCySymSessionCtxGetSize(CPA_INSTANCE_HANDLE_SINGLE, |
| &(sessionData->lacSessCtx), |
| &sessionCtxSizeInBytes); |
| if (CPA_STATUS_SUCCESS != lacStatus) { |
| EPRINTK("%s(): cpaCySymSessionCtxGetSize failed - %d\n", |
| __FUNCTION__, lacStatus); |
| crp->crp_etype = EINVAL; |
| return EINVAL; |
| } |
| sessionData->sessHandle = |
| icp_kmalloc(sessionCtxSizeInBytes, ICP_M_NOWAIT); |
| if (NULL == sessionData->sessHandle) { |
| EPRINTK |
| ("%s(): Failed to get memory for SymSessionCtx\n", |
| __FUNCTION__); |
| crp->crp_etype = ENOMEM; |
| return ENOMEM; |
| } |
| |
| lacStatus = cpaCySymInitSession(CPA_INSTANCE_HANDLE_SINGLE, |
| icp_ocfDrvSymCallBack, |
| &(sessionData->lacSessCtx), |
| sessionData->sessHandle); |
| |
| if (CPA_STATUS_SUCCESS != lacStatus) { |
| EPRINTK("%s(): cpaCySymInitSession failed -%d \n", |
| __FUNCTION__, lacStatus); |
| crp->crp_etype = EFAULT; |
| return EFAULT; |
| } |
| |
| sessionData->inUse = ICP_SESSION_RUNNING; |
| } |
| |
| drvOpData = icp_kmem_cache_zalloc(drvOpData_zone, ICP_M_NOWAIT); |
| if (NULL == drvOpData) { |
| EPRINTK("%s():Failed to get memory for drvOpData\n", |
| __FUNCTION__); |
| crp->crp_etype = ENOMEM; |
| return ENOMEM; |
| } |
| |
| drvOpData->lacOpData.pSessionCtx = sessionData->sessHandle; |
| drvOpData->digestSizeInBytes = sessionData->lacSessCtx.hashSetupData. |
| digestResultLenInBytes; |
| drvOpData->crp = crp; |
| |
| /* Set the default buffer list array memory allocation */ |
| drvOpData->srcBuffer.pBuffers = drvOpData->bufferListArray; |
| drvOpData->numBufferListArray = ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS; |
| |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvProcessDataSetup(drvOpData, drvOpData->crp->crp_desc)) { |
| crp->crp_etype = EINVAL; |
| goto err; |
| } |
| |
| if (drvOpData->crp->crp_desc->crd_next != NULL) { |
| if (icp_ocfDrvProcessDataSetup(drvOpData, drvOpData->crp-> |
| crp_desc->crd_next)) { |
| crp->crp_etype = EINVAL; |
| goto err; |
| } |
| |
| } |
| |
| /* |
| * Allocate buffer list array memory if the data fragment is more than |
| * the default number (ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS) and not |
| * calculated already |
| */ |
| if (crp->crp_flags & ICP_CRYPTO_F_PACKET_BUF) { |
| if (NULL == drvOpData->lacOpData.pDigestResult) { |
| drvOpData->numBufferListArray = |
| icp_ocfDrvGetPacketBuffFrags((icp_packet_buffer_t *) |
| crp->crp_buf); |
| } |
| |
| if (ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS < |
| drvOpData->numBufferListArray) { |
| DPRINTK("%s() numBufferListArray more than default\n", |
| __FUNCTION__); |
| drvOpData->srcBuffer.pBuffers = NULL; |
| drvOpData->srcBuffer.pBuffers = |
| icp_kmalloc(drvOpData->numBufferListArray * |
| sizeof(CpaFlatBuffer), ICP_M_NOWAIT); |
| if (NULL == drvOpData->srcBuffer.pBuffers) { |
| EPRINTK("%s() Failed to get memory for " |
| "pBuffers\n", __FUNCTION__); |
| ICP_CACHE_FREE(drvOpData_zone, drvOpData); |
| crp->crp_etype = ENOMEM; |
| return ENOMEM; |
| } |
| } |
| } |
| |
| /* |
| * Check the type of buffer structure we got and convert it into |
| * CpaBufferList format. |
| */ |
| if (crp->crp_flags & ICP_CRYPTO_F_PACKET_BUF) { |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvPacketBuffToBufferList((icp_packet_buffer_t *) |
| crp->crp_buf, |
| &(drvOpData->srcBuffer))) { |
| EPRINTK("%s():Failed to translate from packet buffer " |
| "to bufferlist\n", __FUNCTION__); |
| crp->crp_etype = EINVAL; |
| goto err; |
| } |
| |
| drvOpData->bufferType = ICP_CRYPTO_F_PACKET_BUF; |
| } else if (crp->crp_flags & CRYPTO_F_IOV) { |
| /* OCF only supports IOV of one entry. */ |
| if (NUM_IOV_SUPPORTED == |
| ((struct uio *)(crp->crp_buf))->uio_iovcnt) { |
| |
| icp_ocfDrvPtrAndLenToBufferList(((struct uio *)(crp-> |
| crp_buf))-> |
| uio_iov[0].iov_base, |
| ((struct uio *)(crp-> |
| crp_buf))-> |
| uio_iov[0].iov_len, |
| &(drvOpData-> |
| srcBuffer)); |
| |
| drvOpData->bufferType = CRYPTO_F_IOV; |
| |
| } else { |
| DPRINTK("%s():Unable to handle IOVs with lengths of " |
| "greater than one!\n", __FUNCTION__); |
| crp->crp_etype = EINVAL; |
| goto err; |
| } |
| |
| } else { |
| icp_ocfDrvPtrAndLenToBufferList(crp->crp_buf, |
| crp->crp_ilen, |
| &(drvOpData->srcBuffer)); |
| |
| drvOpData->bufferType = CRYPTO_BUF_CONTIG; |
| } |
| |
| /* Allocate srcBuffer's private meta data */ |
| if (ICP_OCF_DRV_STATUS_SUCCESS != |
| icp_ocfDrvAllocMetaData(&(drvOpData->srcBuffer), drvOpData)) { |
| EPRINTK("%s() icp_ocfDrvAllocMetaData failed\n", __FUNCTION__); |
| memset(&(drvOpData->lacOpData), 0, sizeof(CpaCySymOpData)); |
| crp->crp_etype = EINVAL; |
| goto err; |
| } |
| |
| /* Perform "in-place" crypto operation */ |
| lacStatus = cpaCySymPerformOp(CPA_INSTANCE_HANDLE_SINGLE, |
| (void *)drvOpData, |
| &(drvOpData->lacOpData), |
| &(drvOpData->srcBuffer), |
| &(drvOpData->srcBuffer), |
| &(drvOpData->verifyResult)); |
| if (CPA_STATUS_RETRY == lacStatus) { |
| DPRINTK("%s(): cpaCySymPerformOp retry, lacStatus = %d\n", |
| __FUNCTION__, lacStatus); |
| memset(&(drvOpData->lacOpData), 0, sizeof(CpaCySymOpData)); |
| crp->crp_etype = ERESTART; |
| goto err; |
| } |
| if (CPA_STATUS_SUCCESS != lacStatus) { |
| EPRINTK("%s(): cpaCySymPerformOp failed, lacStatus = %d\n", |
| __FUNCTION__, lacStatus); |
| memset(&(drvOpData->lacOpData), 0, sizeof(CpaCySymOpData)); |
| crp->crp_etype = EINVAL; |
| goto err; |
| } |
| |
| return 0; //OCF success status value |
| |
| err: |
| if (drvOpData->numBufferListArray > ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS) { |
| icp_kfree(drvOpData->srcBuffer.pBuffers); |
| } |
| icp_ocfDrvFreeMetaData(&(drvOpData->srcBuffer)); |
| ICP_CACHE_FREE(drvOpData_zone, drvOpData); |
| |
| return crp->crp_etype; |
| } |
| |
| /* Name : icp_ocfDrvProcessDataSetup |
| * |
| * Description : This function will setup all the cryptographic operation data |
| * that is required by LAC to execute the operation. |
| */ |
| static int icp_ocfDrvProcessDataSetup(struct icp_drvOpData *drvOpData, |
| struct cryptodesc *crp_desc) |
| { |
| CpaCyRandGenOpData randGenOpData; |
| CpaFlatBuffer randData; |
| |
| drvOpData->lacOpData.packetType = CPA_CY_SYM_PACKET_TYPE_FULL; |
| |
| /* Convert from the cryptop to the ICP LAC crypto parameters */ |
| switch (crp_desc->crd_alg) { |
| case CRYPTO_NULL_CBC: |
| drvOpData->lacOpData. |
| cryptoStartSrcOffsetInBytes = crp_desc->crd_skip; |
| drvOpData->lacOpData. |
| messageLenToCipherInBytes = crp_desc->crd_len; |
| drvOpData->verifyResult = CPA_FALSE; |
| drvOpData->lacOpData.ivLenInBytes = NULL_BLOCK_LEN; |
| break; |
| case CRYPTO_DES_CBC: |
| drvOpData->lacOpData. |
| cryptoStartSrcOffsetInBytes = crp_desc->crd_skip; |
| drvOpData->lacOpData. |
| messageLenToCipherInBytes = crp_desc->crd_len; |
| drvOpData->verifyResult = CPA_FALSE; |
| drvOpData->lacOpData.ivLenInBytes = DES_BLOCK_LEN; |
| break; |
| case CRYPTO_3DES_CBC: |
| drvOpData->lacOpData. |
| cryptoStartSrcOffsetInBytes = crp_desc->crd_skip; |
| drvOpData->lacOpData. |
| messageLenToCipherInBytes = crp_desc->crd_len; |
| drvOpData->verifyResult = CPA_FALSE; |
| drvOpData->lacOpData.ivLenInBytes = DES3_BLOCK_LEN; |
| break; |
| case CRYPTO_ARC4: |
| drvOpData->lacOpData. |
| cryptoStartSrcOffsetInBytes = crp_desc->crd_skip; |
| drvOpData->lacOpData. |
| messageLenToCipherInBytes = crp_desc->crd_len; |
| drvOpData->verifyResult = CPA_FALSE; |
| drvOpData->lacOpData.ivLenInBytes = ARC4_COUNTER_LEN; |
| break; |
| case CRYPTO_AES_CBC: |
| drvOpData->lacOpData. |
| cryptoStartSrcOffsetInBytes = crp_desc->crd_skip; |
| drvOpData->lacOpData. |
| messageLenToCipherInBytes = crp_desc->crd_len; |
| drvOpData->verifyResult = CPA_FALSE; |
| drvOpData->lacOpData.ivLenInBytes = RIJNDAEL128_BLOCK_LEN; |
| break; |
| case CRYPTO_SHA1: |
| case CRYPTO_SHA1_HMAC: |
| case CRYPTO_SHA2_256: |
| case CRYPTO_SHA2_256_HMAC: |
| case CRYPTO_SHA2_384: |
| case CRYPTO_SHA2_384_HMAC: |
| case CRYPTO_SHA2_512: |
| case CRYPTO_SHA2_512_HMAC: |
| case CRYPTO_MD5: |
| case CRYPTO_MD5_HMAC: |
| drvOpData->lacOpData. |
| hashStartSrcOffsetInBytes = crp_desc->crd_skip; |
| drvOpData->lacOpData. |
| messageLenToHashInBytes = crp_desc->crd_len; |
| drvOpData->lacOpData. |
| pDigestResult = |
| icp_ocfDrvDigestPointerFind(drvOpData, crp_desc); |
| |
| if (NULL == drvOpData->lacOpData.pDigestResult) { |
| DPRINTK("%s(): ERROR - could not calculate " |
| "Digest Result memory address\n", __FUNCTION__); |
| return ICP_OCF_DRV_STATUS_FAIL; |
| } |
| |
| drvOpData->lacOpData.digestVerify = CPA_FALSE; |
| break; |
| default: |
| DPRINTK("%s(): Crypto process error - algorithm not " |
| "found \n", __FUNCTION__); |
| return ICP_OCF_DRV_STATUS_FAIL; |
| } |
| |
| /* Figure out what the IV is supposed to be */ |
| if ((crp_desc->crd_alg == CRYPTO_DES_CBC) || |
| (crp_desc->crd_alg == CRYPTO_3DES_CBC) || |
| (crp_desc->crd_alg == CRYPTO_AES_CBC)) { |
| /*ARC4 doesn't use an IV */ |
| if (crp_desc->crd_flags & CRD_F_IV_EXPLICIT) { |
| /* Explicit IV provided to OCF */ |
| drvOpData->lacOpData.pIv = crp_desc->crd_iv; |
| } else { |
| /* IV is not explicitly provided to OCF */ |
| |
| /* Point the LAC OP Data IV pointer to our allocated |
| storage location for this session. */ |
| drvOpData->lacOpData.pIv = drvOpData->ivData; |
| |
| if ((crp_desc->crd_flags & CRD_F_ENCRYPT) && |
| ((crp_desc->crd_flags & CRD_F_IV_PRESENT) == 0)) { |
| |
| /* Encrypting - need to create IV */ |
| randGenOpData.generateBits = CPA_TRUE; |
| randGenOpData.lenInBytes = MAX_IV_LEN_IN_BYTES; |
| |
| icp_ocfDrvPtrAndLenToFlatBuffer((Cpa8U *) |
| drvOpData-> |
| ivData, |
| MAX_IV_LEN_IN_BYTES, |
| &randData); |
| |
| if (CPA_STATUS_SUCCESS != |
| cpaCyRandGen(CPA_INSTANCE_HANDLE_SINGLE, |
| NULL, NULL, |
| &randGenOpData, &randData)) { |
| DPRINTK("%s(): ERROR - Failed to" |
| " generate" |
| " Initialisation Vector\n", |
| __FUNCTION__); |
| return ICP_OCF_DRV_STATUS_FAIL; |
| } |
| |
| crypto_copyback(drvOpData->crp-> |
| crp_flags, |
| drvOpData->crp->crp_buf, |
| crp_desc->crd_inject, |
| drvOpData->lacOpData. |
| ivLenInBytes, |
| (caddr_t) (drvOpData->lacOpData. |
| pIv)); |
| } else { |
| /* Reading IV from buffer */ |
| crypto_copydata(drvOpData->crp-> |
| crp_flags, |
| drvOpData->crp->crp_buf, |
| crp_desc->crd_inject, |
| drvOpData->lacOpData. |
| ivLenInBytes, |
| (caddr_t) (drvOpData->lacOpData. |
| pIv)); |
| } |
| |
| } |
| |
| } |
| |
| return ICP_OCF_DRV_STATUS_SUCCESS; |
| } |
| |
| /* Name : icp_ocfDrvDigestPointerFind |
| * |
| * Description : This function is used to find the memory address of where the |
| * digest information shall be stored in. Input buffer types are an skbuff, iov |
| * or flat buffer. The address is found using the buffer data start address and |
| * an offset. |
| * |
| * Note: In the case of a linux skbuff, the digest address may exist within |
| * a memory space linked to from the start buffer. These linked memory spaces |
| * must be traversed by the data length offset in order to find the digest start |
| * address. Whether there is enough space for the digest must also be checked. |
| */ |
| uint8_t *icp_ocfDrvDigestPointerFind(struct icp_drvOpData * drvOpData, |
| struct cryptodesc * crp_desc) |
| { |
| |
| int offsetInBytes = crp_desc->crd_inject; |
| uint32_t digestSizeInBytes = drvOpData->digestSizeInBytes; |
| uint8_t *flat_buffer_base = NULL; |
| int flat_buffer_length = 0; |
| |
| if (drvOpData->crp->crp_flags & ICP_CRYPTO_F_PACKET_BUF) { |
| |
| return icp_ocfDrvPacketBufferDigestPointerFind(drvOpData, |
| offsetInBytes, |
| digestSizeInBytes); |
| |
| } else { |
| /* IOV or flat buffer */ |
| if (drvOpData->crp->crp_flags & CRYPTO_F_IOV) { |
| /*single IOV check has already been done */ |
| flat_buffer_base = ((struct uio *) |
| (drvOpData->crp->crp_buf))-> |
| uio_iov[0].iov_base; |
| flat_buffer_length = ((struct uio *) |
| (drvOpData->crp->crp_buf))-> |
| uio_iov[0].iov_len; |
| } else { |
| flat_buffer_base = (uint8_t *) drvOpData->crp->crp_buf; |
| flat_buffer_length = drvOpData->crp->crp_ilen; |
| } |
| |
| if (flat_buffer_length < (offsetInBytes + digestSizeInBytes)) { |
| DPRINTK("%s() Not enough space for Digest " |
| "(IOV/Flat Buffer) \n", __FUNCTION__); |
| return NULL; |
| } else { |
| return (uint8_t *) (flat_buffer_base + offsetInBytes); |
| } |
| } |
| DPRINTK("%s() Should not reach this point\n", __FUNCTION__); |
| return NULL; |
| } |