+++ /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 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);
projects / openwrt.git / blobdiff