diff options
Diffstat (limited to 'target/linux/generic/files/crypto/ocf/ep80579/icp_common.c')
| -rw-r--r-- | target/linux/generic/files/crypto/ocf/ep80579/icp_common.c | 773 |
1 files changed, 0 insertions, 773 deletions
diff --git a/target/linux/generic/files/crypto/ocf/ep80579/icp_common.c b/target/linux/generic/files/crypto/ocf/ep80579/icp_common.c deleted file mode 100644 index 5d46c0adc6..0000000000 --- a/target/linux/generic/files/crypto/ocf/ep80579/icp_common.c +++ /dev/null @@ -1,773 +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 Intel® QuickAssist Integrated Accelerator to do the - * crypto. - * - * This driver requires the ICP Access Library that is available from Intel in - * order to operate. - */ - -#include "icp_ocf.h" - -#define ICP_OCF_COMP_NAME "ICP_OCF" -#define ICP_OCF_VER_MAIN (2) -#define ICP_OCF_VER_MJR (1) -#define ICP_OCF_VER_MNR (0) - -#define MAX_DEREG_RETRIES (100) -#define DEFAULT_DEREG_RETRIES (10) -#define DEFAULT_DEREG_DELAY_IN_JIFFIES (10) - -/* This defines the maximum number of sessions possible between OCF - and the OCF EP80579 Driver. If set to zero, there is no limit. */ -#define DEFAULT_OCF_TO_DRV_MAX_SESSION_COUNT (0) -#define NUM_SUPPORTED_CAPABILITIES (21) - -/*Slab zone names*/ -#define ICP_SESSION_DATA_NAME "icp_ocf.SesDat" -#define ICP_OP_DATA_NAME "icp_ocf.OpDat" -#define ICP_DH_NAME "icp_ocf.DH" -#define ICP_MODEXP_NAME "icp_ocf.ModExp" -#define ICP_RSA_DECRYPT_NAME "icp_ocf.RSAdec" -#define ICP_RSA_PKEY_NAME "icp_ocf.RSApk" -#define ICP_DSA_SIGN_NAME "icp_ocf.DSAsg" -#define ICP_DSA_VER_NAME "icp_ocf.DSAver" -#define ICP_RAND_VAL_NAME "icp_ocf.DSArnd" -#define ICP_FLAT_BUFF_NAME "icp_ocf.FB" - -/*Slabs zones*/ -icp_kmem_cache drvSessionData_zone = NULL; -icp_kmem_cache drvOpData_zone = NULL; -icp_kmem_cache drvDH_zone = NULL; -icp_kmem_cache drvLnModExp_zone = NULL; -icp_kmem_cache drvRSADecrypt_zone = NULL; -icp_kmem_cache drvRSAPrivateKey_zone = NULL; -icp_kmem_cache drvDSARSSign_zone = NULL; -icp_kmem_cache drvDSARSSignKValue_zone = NULL; -icp_kmem_cache drvDSAVerify_zone = NULL; - -/*Slab zones for flatbuffers and bufferlist*/ -icp_kmem_cache drvFlatBuffer_zone = NULL; - -static inline int icp_cache_null_check(void) -{ - return (drvSessionData_zone && drvOpData_zone - && drvDH_zone && drvLnModExp_zone && drvRSADecrypt_zone - && drvRSAPrivateKey_zone && drvDSARSSign_zone - && drvDSARSSign_zone && drvDSARSSignKValue_zone - && drvDSAVerify_zone && drvFlatBuffer_zone); -} - -/*Function to free all allocated slab caches before exiting the module*/ -static void icp_ocfDrvFreeCaches(void); - -int32_t icp_ocfDrvDriverId = INVALID_DRIVER_ID; - -/* Module parameter - gives the number of times LAC deregistration shall be - re-tried */ -int num_dereg_retries = DEFAULT_DEREG_RETRIES; - -/* Module parameter - gives the delay time in jiffies before a LAC session - shall be attempted to be deregistered again */ -int dereg_retry_delay_in_jiffies = DEFAULT_DEREG_DELAY_IN_JIFFIES; - -/* Module parameter - gives the maximum number of sessions possible between - OCF and the OCF EP80579 Driver. If set to zero, there is no limit.*/ -int max_sessions = DEFAULT_OCF_TO_DRV_MAX_SESSION_COUNT; - -/* This is set when the module is removed from the system, no further - processing can take place if this is set */ -icp_atomic_t icp_ocfDrvIsExiting = ICP_ATOMIC_INIT(0); - -/* This is used to show how many lac sessions were not deregistered*/ -icp_atomic_t lac_session_failed_dereg_count = ICP_ATOMIC_INIT(0); - -/* This is used to track the number of registered sessions between OCF and - * and the OCF EP80579 driver, when max_session is set to value other than - * zero. This ensures that the max_session set for the OCF and the driver - * is equal to the LAC registered sessions */ -icp_atomic_t num_ocf_to_drv_registered_sessions = ICP_ATOMIC_INIT(0); - -/* Head of linked list used to store session data */ -icp_drvSessionListHead_t icp_ocfDrvGlobalSymListHead; -icp_drvSessionListHead_t icp_ocfDrvGlobalSymListHead_FreeMemList; - -icp_spinlock_t icp_ocfDrvSymSessInfoListSpinlock; - -/*Below pointer is only used in linux, FreeBSD uses the name to -create its own variable name*/ -icp_workqueue *icp_ocfDrvFreeLacSessionWorkQ = NULL; -ICP_WORKQUEUE_DEFINE_THREAD(icp_ocfDrvFreeLacSessionWorkQ); - -struct icp_drvBuffListInfo defBuffListInfo; - -/* Name : icp_ocfDrvInit - * - * Description : This function will register all the symmetric and asymmetric - * functionality that will be accelerated by the hardware. It will also - * get a unique driver ID from the OCF and initialise all slab caches - */ -ICP_MODULE_INIT_FUNC(icp_ocfDrvInit) -{ - int ocfStatus = 0; - - IPRINTK("=== %s ver %d.%d.%d ===\n", ICP_OCF_COMP_NAME, - ICP_OCF_VER_MAIN, ICP_OCF_VER_MJR, ICP_OCF_VER_MNR); - - if (MAX_DEREG_RETRIES < num_dereg_retries) { - EPRINTK("Session deregistration retry count set to greater " - "than %d", MAX_DEREG_RETRIES); - icp_module_return_code(EINVAL); - } - - /* Initialize and Start the Cryptographic component */ - if (CPA_STATUS_SUCCESS != - cpaCyStartInstance(CPA_INSTANCE_HANDLE_SINGLE)) { - EPRINTK("Failed to initialize and start the instance " - "of the Cryptographic component.\n"); - return icp_module_return_code(EINVAL); - } - - icp_spin_lock_init(&icp_ocfDrvSymSessInfoListSpinlock); - - /* Set the default size of BufferList to allocate */ - memset(&defBuffListInfo, 0, sizeof(struct icp_drvBuffListInfo)); - if (ICP_OCF_DRV_STATUS_SUCCESS != - icp_ocfDrvBufferListMemInfo(ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS, - &defBuffListInfo)) { - EPRINTK("Failed to get bufferlist memory info.\n"); - return icp_module_return_code(ENOMEM); - } - - /*Register OCF EP80579 Driver with OCF */ - icp_ocfDrvDriverId = ICP_CRYPTO_GET_DRIVERID(); - - if (icp_ocfDrvDriverId < 0) { - EPRINTK("%s : ICP driver failed to register with OCF!\n", - __FUNCTION__); - return icp_module_return_code(ENODEV); - } - - /*Create all the slab caches used by the OCF EP80579 Driver */ - drvSessionData_zone = - ICP_CACHE_CREATE(ICP_SESSION_DATA_NAME, struct icp_drvSessionData); - - /* - * Allocation of the OpData includes the allocation space for meta data. - * The memory after the opData structure is reserved for this meta data. - */ - drvOpData_zone = - icp_kmem_cache_create(ICP_OP_DATA_NAME, - sizeof(struct icp_drvOpData) + - defBuffListInfo.metaSize, - ICP_KERNEL_CACHE_ALIGN, - ICP_KERNEL_CACHE_NOINIT); - - drvDH_zone = ICP_CACHE_CREATE(ICP_DH_NAME, CpaCyDhPhase1KeyGenOpData); - - drvLnModExp_zone = - ICP_CACHE_CREATE(ICP_MODEXP_NAME, CpaCyLnModExpOpData); - - drvRSADecrypt_zone = - ICP_CACHE_CREATE(ICP_RSA_DECRYPT_NAME, CpaCyRsaDecryptOpData); - - drvRSAPrivateKey_zone = - ICP_CACHE_CREATE(ICP_RSA_PKEY_NAME, CpaCyRsaPrivateKey); - - drvDSARSSign_zone = - ICP_CACHE_CREATE(ICP_DSA_SIGN_NAME, CpaCyDsaRSSignOpData); - - /*too awkward to use a macro here */ - drvDSARSSignKValue_zone = - ICP_CACHE_CREATE(ICP_RAND_VAL_NAME, - DSA_RS_SIGN_PRIMEQ_SIZE_IN_BYTES); - - drvDSAVerify_zone = - ICP_CACHE_CREATE(ICP_DSA_VER_NAME, CpaCyDsaVerifyOpData); - - drvFlatBuffer_zone = - ICP_CACHE_CREATE(ICP_FLAT_BUFF_NAME, CpaFlatBuffer); - - if (0 == icp_cache_null_check()) { - icp_ocfDrvFreeCaches(); - EPRINTK("%s() line %d: Not enough memory!\n", - __FUNCTION__, __LINE__); - return ENOMEM; - } - - /* Register the ICP symmetric crypto support. */ - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_NULL_CBC, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_DES_CBC, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_3DES_CBC, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_AES_CBC, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_ARC4, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_MD5, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_MD5_HMAC, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA1, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA1_HMAC, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA2_256, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA2_256_HMAC, - ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA2_384, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA2_384_HMAC, - ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA2_512, ocfStatus); - ICP_REG_SYM_WITH_OCF(icp_ocfDrvDriverId, CRYPTO_SHA2_512_HMAC, - ocfStatus); - - /* Register the ICP asymmetric algorithm support */ - ICP_REG_ASYM_WITH_OCF(icp_ocfDrvDriverId, CRK_DH_COMPUTE_KEY, - ocfStatus); - ICP_REG_ASYM_WITH_OCF(icp_ocfDrvDriverId, CRK_MOD_EXP, ocfStatus); - ICP_REG_ASYM_WITH_OCF(icp_ocfDrvDriverId, CRK_MOD_EXP_CRT, ocfStatus); - ICP_REG_ASYM_WITH_OCF(icp_ocfDrvDriverId, CRK_DSA_SIGN, ocfStatus); - ICP_REG_ASYM_WITH_OCF(icp_ocfDrvDriverId, CRK_DSA_VERIFY, ocfStatus); - - /* Register the ICP random number generator support */ - ICP_REG_RAND_WITH_OCF(icp_ocfDrvDriverId, - icp_ocfDrvReadRandom, NULL, ocfStatus); - - if (OCF_ZERO_FUNCTIONALITY_REGISTERED == ocfStatus) { - DPRINTK("%s: Failed to register any device capabilities\n", - __FUNCTION__); - icp_ocfDrvFreeCaches(); - icp_ocfDrvDriverId = INVALID_DRIVER_ID; - return icp_module_return_code(ECANCELED); - } - - DPRINTK("%s: Registered %d of %d device capabilities\n", - __FUNCTION__, ocfStatus, NUM_SUPPORTED_CAPABILITIES); - - /*Session data linked list used during module exit */ - ICP_INIT_LIST_HEAD(&icp_ocfDrvGlobalSymListHead); - ICP_INIT_LIST_HEAD(&icp_ocfDrvGlobalSymListHead_FreeMemList); - - ICP_WORKQUEUE_CREATE(icp_ocfDrvFreeLacSessionWorkQ, "icpwq"); - if (ICP_WORKQUEUE_NULL_CHECK(icp_ocfDrvFreeLacSessionWorkQ)) { - EPRINTK("%s: Failed to create single " - "thread workqueue\n", __FUNCTION__); - icp_ocfDrvFreeCaches(); - icp_ocfDrvDriverId = INVALID_DRIVER_ID; - return icp_module_return_code(ENOMEM); - } - - return icp_module_return_code(0); -} - -/* Name : icp_ocfDrvExit - * - * Description : This function will deregister all the symmetric sessions - * registered with the LAC component. It will also deregister all symmetric - * and asymmetric functionality that can be accelerated by the hardware via OCF - * and random number generation if it is enabled. - */ -ICP_MODULE_EXIT_FUNC(icp_ocfDrvExit) -{ - CpaStatus lacStatus = CPA_STATUS_SUCCESS; - struct icp_drvSessionData *sessionData = NULL; - struct icp_drvSessionData *tempSessionData = NULL; - int i, remaining_delay_time_in_jiffies = 0; - - /* For FreeBSD the invariant macro below makes function to return */ - /* with EBUSY value in the case of any session which has been regi- */ - /* stered with LAC not being deregistered. */ - /* The Linux implementation is empty since it is purely to compensate */ - /* for a limitation of the FreeBSD 7.1 Opencrypto framework. */ - - ICP_MODULE_EXIT_INV(); - - /* There is a possibility of a process or new session command being */ - /* sent before this variable is incremented. The aim of this variable */ - /* is to stop a loop of calls creating a deadlock situation which */ - /* would prevent the driver from exiting. */ - icp_atomic_set(&icp_ocfDrvIsExiting, 1); - - /*Existing sessions will be routed to another driver after these calls */ - crypto_unregister_all(icp_ocfDrvDriverId); - crypto_runregister_all(icp_ocfDrvDriverId); - - if (ICP_WORKQUEUE_NULL_CHECK(icp_ocfDrvFreeLacSessionWorkQ)) { - DPRINTK("%s: workqueue already " - "destroyed, therefore module exit " - " function already called. Exiting.\n", __FUNCTION__); - return ICP_MODULE_EXIT_FUNC_RETURN_VAL; - } - /*If any sessions are waiting to be deregistered, do that. This also - flushes the work queue */ - ICP_WORKQUEUE_DESTROY(icp_ocfDrvFreeLacSessionWorkQ); - - /*ENTER CRITICAL SECTION */ - icp_spin_lockbh_lock(&icp_ocfDrvSymSessInfoListSpinlock); - - ICP_LIST_FOR_EACH_ENTRY_SAFE(tempSessionData, sessionData, - &icp_ocfDrvGlobalSymListHead, listNode) { - for (i = 0; i < num_dereg_retries; i++) { - /*No harm if bad input - LAC will handle error cases */ - if (ICP_SESSION_RUNNING == tempSessionData->inUse) { - lacStatus = - cpaCySymRemoveSession - (CPA_INSTANCE_HANDLE_SINGLE, - tempSessionData->sessHandle); - if (CPA_STATUS_SUCCESS == lacStatus) { - /* Succesfully deregistered */ - break; - } else if (CPA_STATUS_RETRY != lacStatus) { - icp_atomic_inc - (&lac_session_failed_dereg_count); - break; - } - - /*schedule_timout returns the time left for completion if - * this task is set to TASK_INTERRUPTIBLE */ - remaining_delay_time_in_jiffies = - dereg_retry_delay_in_jiffies; - while (0 > remaining_delay_time_in_jiffies) { - remaining_delay_time_in_jiffies = - icp_schedule_timeout - (&icp_ocfDrvSymSessInfoListSpinlock, - remaining_delay_time_in_jiffies); - } - - DPRINTK - ("%s(): Retry %d to deregistrate the session\n", - __FUNCTION__, i); - } - } - - /*remove from current list */ - ICP_LIST_DEL(tempSessionData, listNode); - /*add to free mem linked list */ - ICP_LIST_ADD(tempSessionData, - &icp_ocfDrvGlobalSymListHead_FreeMemList, - listNode); - - } - - /*EXIT CRITICAL SECTION */ - icp_spin_lockbh_unlock(&icp_ocfDrvSymSessInfoListSpinlock); - - /*set back to initial values */ - sessionData = NULL; - /*still have a reference in our list! */ - tempSessionData = NULL; - /*free memory */ - - ICP_LIST_FOR_EACH_ENTRY_SAFE(tempSessionData, sessionData, - &icp_ocfDrvGlobalSymListHead_FreeMemList, - listNode) { - - ICP_LIST_DEL(tempSessionData, listNode); - /* Free allocated CpaCySymSessionCtx */ - if (NULL != tempSessionData->sessHandle) { - icp_kfree(tempSessionData->sessHandle); - } - memset(tempSessionData, 0, sizeof(struct icp_drvSessionData)); - ICP_CACHE_FREE(drvSessionData_zone, tempSessionData); - } - - if (0 != icp_atomic_read(&lac_session_failed_dereg_count)) { - DPRINTK("%s(): %d LAC sessions were not deregistered " - "correctly. This is not a clean exit! \n", - __FUNCTION__, - icp_atomic_read(&lac_session_failed_dereg_count)); - } - - icp_ocfDrvFreeCaches(); - icp_ocfDrvDriverId = INVALID_DRIVER_ID; - - icp_spin_lock_destroy(&icp_ocfDrvSymSessInfoListSpinlock); - - /* Shutdown the Cryptographic component */ - lacStatus = cpaCyStopInstance(CPA_INSTANCE_HANDLE_SINGLE); - if (CPA_STATUS_SUCCESS != lacStatus) { - DPRINTK("%s(): Failed to stop instance of the " - "Cryptographic component.(status == %d)\n", - __FUNCTION__, lacStatus); - } - - return ICP_MODULE_EXIT_FUNC_RETURN_VAL; -} - -/* Name : icp_ocfDrvFreeCaches - * - * Description : This function deregisters all slab caches - */ -static void icp_ocfDrvFreeCaches(void) -{ - icp_atomic_set(&icp_ocfDrvIsExiting, 1); - - /*Sym Zones */ - ICP_CACHE_DESTROY(drvSessionData_zone); - ICP_CACHE_DESTROY(drvOpData_zone); - - /*Asym zones */ - ICP_CACHE_DESTROY(drvDH_zone); - ICP_CACHE_DESTROY(drvLnModExp_zone); - ICP_CACHE_DESTROY(drvRSADecrypt_zone); - ICP_CACHE_DESTROY(drvRSAPrivateKey_zone); - ICP_CACHE_DESTROY(drvDSARSSignKValue_zone); - ICP_CACHE_DESTROY(drvDSARSSign_zone); - ICP_CACHE_DESTROY(drvDSAVerify_zone); - - /*FlatBuffer and BufferList Zones */ - ICP_CACHE_DESTROY(drvFlatBuffer_zone); - -} - -/* Name : icp_ocfDrvDeregRetry - * - * Description : This function will try to farm the session deregistration - * off to a work queue. If it fails, nothing more can be done and it - * returns an error - */ -int icp_ocfDrvDeregRetry(CpaCySymSessionCtx sessionToDeregister) -{ - struct icp_ocfDrvFreeLacSession *workstore = NULL; - - DPRINTK("%s(): Retry - Deregistering session (%p)\n", - __FUNCTION__, sessionToDeregister); - - /*make sure the session is not available to be allocated during this - process */ - icp_atomic_inc(&lac_session_failed_dereg_count); - - /*Farm off to work queue */ - workstore = - icp_kmalloc(sizeof(struct icp_ocfDrvFreeLacSession), ICP_M_NOWAIT); - if (NULL == workstore) { - DPRINTK("%s(): unable to free session - no memory available " - "for work queue\n", __FUNCTION__); - return ENOMEM; - } - - workstore->sessionToDeregister = sessionToDeregister; - - icp_init_work(&(workstore->work), - icp_ocfDrvDeferedFreeLacSessionTaskFn, workstore); - - ICP_WORKQUEUE_ENQUEUE(icp_ocfDrvFreeLacSessionWorkQ, - &(workstore->work)); - - return ICP_OCF_DRV_STATUS_SUCCESS; - -} - -/* Name : icp_ocfDrvDeferedFreeLacSessionProcess - * - * Description : This function will retry (module input parameter) - * 'num_dereg_retries' times to deregister any symmetric session that recieves a - * CPA_STATUS_RETRY message from the LAC component. This function is run in - * Thread context because it is called from a worker thread - */ -void icp_ocfDrvDeferedFreeLacSessionProcess(void *arg) -{ - struct icp_ocfDrvFreeLacSession *workstore = NULL; - CpaCySymSessionCtx sessionToDeregister = NULL; - int i = 0; - int remaining_delay_time_in_jiffies = 0; - CpaStatus lacStatus = CPA_STATUS_SUCCESS; - - workstore = (struct icp_ocfDrvFreeLacSession *)arg; - if (NULL == workstore) { - DPRINTK("%s() function called with null parameter \n", - __FUNCTION__); - return; - } - - sessionToDeregister = workstore->sessionToDeregister; - icp_kfree(workstore); - - /*if exiting, give deregistration one more blast only */ - if (icp_atomic_read(&icp_ocfDrvIsExiting) == CPA_TRUE) { - lacStatus = cpaCySymRemoveSession(CPA_INSTANCE_HANDLE_SINGLE, - sessionToDeregister); - - if (lacStatus != CPA_STATUS_SUCCESS) { - DPRINTK("%s() Failed to Dereg LAC session %p " - "during module exit\n", __FUNCTION__, - sessionToDeregister); - return; - } - - icp_atomic_dec(&lac_session_failed_dereg_count); - return; - } - - for (i = 0; i <= num_dereg_retries; i++) { - lacStatus = cpaCySymRemoveSession(CPA_INSTANCE_HANDLE_SINGLE, - sessionToDeregister); - - if (lacStatus == CPA_STATUS_SUCCESS) { - icp_atomic_dec(&lac_session_failed_dereg_count); - return; - } - if (lacStatus != CPA_STATUS_RETRY) { - DPRINTK("%s() Failed to deregister session - lacStatus " - " = %d", __FUNCTION__, lacStatus); - break; - } - - /*schedule_timout returns the time left for completion if this - task is set to TASK_INTERRUPTIBLE */ - remaining_delay_time_in_jiffies = dereg_retry_delay_in_jiffies; - while (0 < remaining_delay_time_in_jiffies) { - remaining_delay_time_in_jiffies = - icp_schedule_timeout(NULL, - remaining_delay_time_in_jiffies); - } - - } - - DPRINTK("%s(): Unable to deregister session\n", __FUNCTION__); - DPRINTK("%s(): Number of unavailable LAC sessions = %d\n", __FUNCTION__, - icp_atomic_read(&lac_session_failed_dereg_count)); -} - -/* Name : icp_ocfDrvPtrAndLenToFlatBuffer - * - * Description : This function converts a "pointer and length" buffer - * structure to Fredericksburg Flat Buffer (CpaFlatBuffer) format. - * - * This function assumes that the data passed in are valid. - */ -inline void -icp_ocfDrvPtrAndLenToFlatBuffer(void *pData, uint32_t len, - CpaFlatBuffer * pFlatBuffer) -{ - pFlatBuffer->pData = pData; - pFlatBuffer->dataLenInBytes = len; -} - -/* Name : icp_ocfDrvPtrAndLenToBufferList - * - * Description : This function converts a "pointer and length" buffer - * structure to Fredericksburg Scatter/Gather Buffer (CpaBufferList) format. - * - * This function assumes that the data passed in are valid. - */ -inline void -icp_ocfDrvPtrAndLenToBufferList(void *pDataIn, uint32_t length, - CpaBufferList * pBufferList) -{ - pBufferList->numBuffers = 1; - pBufferList->pBuffers->pData = pDataIn; - pBufferList->pBuffers->dataLenInBytes = length; -} - -/* Name : icp_ocfDrvBufferListToPtrAndLen - * - * Description : This function converts Fredericksburg Scatter/Gather Buffer - * (CpaBufferList) format to a "pointer and length" buffer structure. - * - * This function assumes that the data passed in are valid. - */ -inline void -icp_ocfDrvBufferListToPtrAndLen(CpaBufferList * pBufferList, - void **ppDataOut, uint32_t * pLength) -{ - *ppDataOut = pBufferList->pBuffers->pData; - *pLength = pBufferList->pBuffers->dataLenInBytes; -} - -/* Name : icp_ocfDrvBufferListMemInfo - * - * Description : This function will set the number of flat buffers in - * bufferlist, the size of memory to allocate for the pPrivateMetaData - * member of the CpaBufferList. - */ -int -icp_ocfDrvBufferListMemInfo(uint16_t numBuffers, - struct icp_drvBuffListInfo *buffListInfo) -{ - buffListInfo->numBuffers = numBuffers; - - if (CPA_STATUS_SUCCESS != - cpaCyBufferListGetMetaSize(CPA_INSTANCE_HANDLE_SINGLE, - buffListInfo->numBuffers, - &(buffListInfo->metaSize))) { - EPRINTK("%s() Failed to get buffer list meta size.\n", - __FUNCTION__); - return ICP_OCF_DRV_STATUS_FAIL; - } - - return ICP_OCF_DRV_STATUS_SUCCESS; -} - -/* Name : icp_ocfDrvFreeFlatBuffer - * - * Description : This function will deallocate flat buffer. - */ -inline void icp_ocfDrvFreeFlatBuffer(CpaFlatBuffer * pFlatBuffer) -{ - if (pFlatBuffer != NULL) { - memset(pFlatBuffer, 0, sizeof(CpaFlatBuffer)); - ICP_CACHE_FREE(drvFlatBuffer_zone, pFlatBuffer); - } -} - -/* Name : icp_ocfDrvAllocMetaData - * - * Description : This function will allocate memory for the - * pPrivateMetaData member of CpaBufferList. - */ -inline int -icp_ocfDrvAllocMetaData(CpaBufferList * pBufferList, - struct icp_drvOpData *pOpData) -{ - Cpa32U metaSize = 0; - - if (pBufferList->numBuffers <= ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS) { - uint8_t *pOpDataStartAddr = (uint8_t *) pOpData; - - if (0 == defBuffListInfo.metaSize) { - pBufferList->pPrivateMetaData = NULL; - return ICP_OCF_DRV_STATUS_SUCCESS; - } - /* - * The meta data allocation has been included as part of the - * op data. It has been pre-allocated in memory just after the - * icp_drvOpData structure. - */ - pBufferList->pPrivateMetaData = (void *)(pOpDataStartAddr + - sizeof(struct - icp_drvOpData)); - } else { - if (CPA_STATUS_SUCCESS != - cpaCyBufferListGetMetaSize(CPA_INSTANCE_HANDLE_SINGLE, - pBufferList->numBuffers, - &metaSize)) { - EPRINTK("%s() Failed to get buffer list meta size.\n", - __FUNCTION__); - return ICP_OCF_DRV_STATUS_FAIL; - } - - if (0 == metaSize) { - pBufferList->pPrivateMetaData = NULL; - return ICP_OCF_DRV_STATUS_SUCCESS; - } - - pBufferList->pPrivateMetaData = - icp_kmalloc(metaSize, ICP_M_NOWAIT); - } - if (NULL == pBufferList->pPrivateMetaData) { - EPRINTK("%s() Failed to allocate pPrivateMetaData.\n", - __FUNCTION__); - return ICP_OCF_DRV_STATUS_FAIL; - } - - return ICP_OCF_DRV_STATUS_SUCCESS; -} - -/* Name : icp_ocfDrvFreeMetaData - * - * Description : This function will deallocate pPrivateMetaData memory. - */ -inline void icp_ocfDrvFreeMetaData(CpaBufferList * pBufferList) -{ - if (NULL == pBufferList->pPrivateMetaData) { - return; - } - - /* - * Only free the meta data if the BufferList has more than - * ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS number of buffers. - * Otherwise, the meta data shall be freed when the icp_drvOpData is - * freed. - */ - if (ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS < pBufferList->numBuffers) { - icp_kfree(pBufferList->pPrivateMetaData); - } -} - -/* Module declaration, init and exit functions */ -ICP_DECLARE_MODULE(icp_ocf, icp_ocfDrvInit, icp_ocfDrvExit); -ICP_MODULE_DESCRIPTION("OCF Driver for Intel Quick Assist crypto acceleration"); -ICP_MODULE_VERSION(icp_ocf, ICP_OCF_VER_MJR); -ICP_MODULE_LICENSE("Dual BSD/GPL"); -ICP_MODULE_AUTHOR("Intel"); - -/* Module parameters */ -ICP_MODULE_PARAM_INT(icp_ocf, num_dereg_retries, - "Number of times to retry LAC Sym Session Deregistration. " - "Default 10, Max 100"); -ICP_MODULE_PARAM_INT(icp_ocf, dereg_retry_delay_in_jiffies, "Delay in jiffies " - "(added to a schedule() function call) before a LAC Sym " - "Session Dereg is retried. Default 10"); -ICP_MODULE_PARAM_INT(icp_ocf, max_sessions, - "This sets the maximum number of sessions " - "between OCF and this driver. If this value is set to zero," - "max session count checking is disabled. Default is zero(0)"); - -/* Module dependencies */ -#define MODULE_MIN_VER 1 -#define CRYPTO_MAX_VER 3 -#define LAC_MAX_VER 2 - -ICP_MODULE_DEPEND(icp_ocf, crypto, MODULE_MIN_VER, MODULE_MIN_VER, - CRYPTO_MAX_VER); -ICP_MODULE_DEPEND(icp_ocf, cryptodev, MODULE_MIN_VER, MODULE_MIN_VER, - CRYPTO_MAX_VER); -ICP_MODULE_DEPEND(icp_ocf, icp_crypto, MODULE_MIN_VER, MODULE_MIN_VER, - LAC_MAX_VER); |