rename target/linux/generic-2.6 to generic

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@21952 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 1153 insertions, 0 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
new file mode 100644
index 0000000000..e1c71484a6
--- /dev/null
+++ b/target/linux/generic/files/crypto/ocf/ep80579/icp_sym.c
@@ -0,0 +1,1153 @@
+/***************************************************************************
+ *
+ * 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;
+}