diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/ep80579/icp_sym.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/ep80579/icp_sym.c | 1153 |
1 files changed, 0 insertions, 1153 deletions
diff --git a/target/linux/generic/files/crypto/ocf/ep80579/icp_sym.c b/target/linux/generic/files/crypto/ocf/ep80579/icp_sym.c deleted file mode 100644 index e1c71484a6..0000000000 --- a/target/linux/generic/files/crypto/ocf/ep80579/icp_sym.c +++ /dev/null @@ -1,1153 +0,0 @@ -/*************************************************************************** - * - * 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 Intel® 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; -} |