+++ /dev/null
-/***************************************************************************
- *
- * 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;
-}
projects / openwrt / svn-archive / archive.git / blobdiff