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25a958e9bf
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@13288 3c298f89-4303-0410-b956-a3cf2f4a3e73
364 lines
12 KiB
C
364 lines
12 KiB
C
/***************************************************************************
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*
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* This file is provided under a dual BSD/GPLv2 license. When using or
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* redistributing this file, you may do so under either license.
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*
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* GPL LICENSE SUMMARY
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*
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* Copyright(c) 2007,2008 Intel Corporation. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of version 2 of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
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* The full GNU General Public License is included in this distribution
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* in the file called LICENSE.GPL.
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*
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* Contact Information:
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* Intel Corporation
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*
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* BSD LICENSE
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*
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* Copyright(c) 2007,2008 Intel Corporation. All rights reserved.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*
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* version: Security.L.1.0.130
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*
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***************************************************************************/
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/*
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* OCF drv driver header file for the Intel ICP processor.
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*/
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#ifndef ICP_OCF_H
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#define ICP_OCF_H
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#include <linux/crypto.h>
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#include <linux/delay.h>
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#include <linux/skbuff.h>
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#include "cryptodev.h"
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#include "uio.h"
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#include "cpa.h"
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#include "cpa_cy_im.h"
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#include "cpa_cy_sym.h"
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#include "cpa_cy_rand.h"
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#include "cpa_cy_dh.h"
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#include "cpa_cy_rsa.h"
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#include "cpa_cy_ln.h"
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#include "cpa_cy_common.h"
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#include "cpa_cy_dsa.h"
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#define NUM_BITS_IN_BYTE (8)
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#define NUM_BITS_IN_BYTE_MINUS_ONE (NUM_BITS_IN_BYTE -1)
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#define INVALID_DRIVER_ID (-1)
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#define RETURN_RAND_NUM_GEN_FAILED (-1)
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/*This is define means only one operation can be chained to another
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(resulting in one chain of two operations)*/
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#define MAX_NUM_OF_CHAINED_OPS (1)
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/*This is the max block cipher initialisation vector*/
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#define MAX_IV_LEN_IN_BYTES (20)
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/*This is used to check whether the OCF to this driver session limit has
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been disabled*/
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#define NO_OCF_TO_DRV_MAX_SESSIONS (0)
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/*OCF values mapped here*/
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#define ICP_SHA1_DIGEST_SIZE_IN_BYTES (SHA1_HASH_LEN)
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#define ICP_SHA256_DIGEST_SIZE_IN_BYTES (SHA2_256_HASH_LEN)
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#define ICP_SHA384_DIGEST_SIZE_IN_BYTES (SHA2_384_HASH_LEN)
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#define ICP_SHA512_DIGEST_SIZE_IN_BYTES (SHA2_512_HASH_LEN)
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#define ICP_MD5_DIGEST_SIZE_IN_BYTES (MD5_HASH_LEN)
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#define ARC4_COUNTER_LEN (ARC4_BLOCK_LEN)
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#define OCF_REGISTRATION_STATUS_SUCCESS (0)
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#define OCF_ZERO_FUNCTIONALITY_REGISTERED (0)
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#define ICP_OCF_DRV_NO_CRYPTO_PROCESS_ERROR (0)
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#define ICP_OCF_DRV_STATUS_SUCCESS (0)
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#define ICP_OCF_DRV_STATUS_FAIL (1)
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/*Turn on/off debug options*/
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#define ICP_OCF_PRINT_DEBUG_MESSAGES (0)
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#define ICP_OCF_PRINT_KERN_ALERT (1)
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#define ICP_OCF_PRINT_KERN_ERRS (1)
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/*DSA Prime Q size in bytes (as defined in the standard) */
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#define DSA_RS_SIGN_PRIMEQ_SIZE_IN_BYTES (20)
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/*MACRO DEFINITIONS*/
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#define BITS_TO_BYTES(bytes, bits) \
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bytes = (bits + NUM_BITS_IN_BYTE_MINUS_ONE) / NUM_BITS_IN_BYTE
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#define ICP_CACHE_CREATE(cache_ID, cache_name) \
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kmem_cache_create(cache_ID, sizeof(cache_name),0, \
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SLAB_HWCACHE_ALIGN, NULL, NULL);
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#define ICP_CACHE_NULL_CHECK(slab_zone) \
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{ \
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if(NULL == slab_zone){ \
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icp_ocfDrvFreeCaches(); \
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EPRINTK("%s() line %d: Not enough memory!\n", \
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__FUNCTION__, __LINE__); \
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return ENOMEM; \
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} \
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}
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#define ICP_CACHE_DESTROY(slab_zone) \
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{ \
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if(NULL != slab_zone){ \
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kmem_cache_destroy(slab_zone); \
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slab_zone = NULL; \
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} \
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}
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#define ICP_REGISTER_SYM_FUNCTIONALITY_WITH_OCF(alg) \
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{ \
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if(OCF_REGISTRATION_STATUS_SUCCESS == \
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crypto_register(icp_ocfDrvDriverId, \
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alg, \
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0, \
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0)) { \
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ocfStatus++; \
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} \
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}
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#define ICP_REGISTER_ASYM_FUNCTIONALITY_WITH_OCF(alg) \
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{ \
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if(OCF_REGISTRATION_STATUS_SUCCESS == \
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crypto_kregister(icp_ocfDrvDriverId, \
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alg, \
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0)){ \
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ocfStatus++; \
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} \
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}
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#if ICP_OCF_PRINT_DEBUG_MESSAGES == 1
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#define DPRINTK(args...) \
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{ \
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printk(args); \
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}
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#else //ICP_OCF_PRINT_DEBUG_MESSAGES == 1
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#define DPRINTK(args...)
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#endif //ICP_OCF_PRINT_DEBUG_MESSAGES == 1
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#if ICP_OCF_PRINT_KERN_ALERT == 1
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#define APRINTK(args...) \
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{ \
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printk(KERN_ALERT args); \
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}
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#else //ICP_OCF_PRINT_KERN_ALERT == 1
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#define APRINTK(args...)
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#endif //ICP_OCF_PRINT_KERN_ALERT == 1
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#if ICP_OCF_PRINT_KERN_ERRS == 1
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#define EPRINTK(args...) \
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{ \
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printk(KERN_ERR args); \
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}
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#else //ICP_OCF_PRINT_KERN_ERRS == 1
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#define EPRINTK(args...)
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#endif //ICP_OCF_PRINT_KERN_ERRS == 1
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#define IPRINTK(args...) \
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{ \
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printk(KERN_INFO args); \
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}
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/*END OF MACRO DEFINITIONS*/
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typedef enum {
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ICP_OCF_DRV_ALG_CIPHER = 0,
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ICP_OCF_DRV_ALG_HASH
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} icp_ocf_drv_alg_type_t;
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/* These are all defined in icp_common.c */
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extern atomic_t lac_session_failed_dereg_count;
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extern atomic_t icp_ocfDrvIsExiting;
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extern atomic_t num_ocf_to_drv_registered_sessions;
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/*These are use inputs used in icp_sym.c and icp_common.c
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They are instantiated in icp_common.c*/
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extern int max_sessions;
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extern int32_t icp_ocfDrvDriverId;
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extern struct list_head icp_ocfDrvGlobalSymListHead;
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extern struct list_head icp_ocfDrvGlobalSymListHead_FreeMemList;
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extern struct workqueue_struct *icp_ocfDrvFreeLacSessionWorkQ;
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extern spinlock_t icp_ocfDrvSymSessInfoListSpinlock;
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extern rwlock_t icp_kmem_cache_destroy_alloc_lock;
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/*Slab zones for symettric functionality, instantiated in icp_common.c*/
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extern struct kmem_cache *drvSessionData_zone;
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extern struct kmem_cache *drvOpData_zone;
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/*Slabs zones for asymettric functionality, instantiated in icp_common.c*/
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extern struct kmem_cache *drvDH_zone;
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extern struct kmem_cache *drvLnModExp_zone;
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extern struct kmem_cache *drvRSADecrypt_zone;
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extern struct kmem_cache *drvRSAPrivateKey_zone;
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extern struct kmem_cache *drvDSARSSign_zone;
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extern struct kmem_cache *drvDSARSSignKValue_zone;
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extern struct kmem_cache *drvDSAVerify_zone;
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/*Slab zones for flatbuffers and bufferlist*/
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extern struct kmem_cache *drvFlatBuffer_zone;
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#define ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS (16)
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struct icp_drvBuffListInfo {
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Cpa16U numBuffers;
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Cpa32U metaSize;
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Cpa32U metaOffset;
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Cpa32U buffListSize;
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};
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extern struct icp_drvBuffListInfo defBuffListInfo;
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/*
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* This struct is used to keep a reference to the relevant node in the list
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* of sessionData structs, to the buffer type required by OCF and to the OCF
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* provided crp struct that needs to be returned. All this info is needed in
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* the callback function.
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*
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* IV can sometimes be stored in non-contiguous memory (e.g. skbuff
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* linked/frag list, therefore a contiguous memory space for the IV data must be
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* created and passed to LAC
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*
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*/
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struct icp_drvOpData {
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CpaCySymOpData lacOpData;
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uint32_t digestSizeInBytes;
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struct cryptop *crp;
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uint8_t bufferType;
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uint8_t ivData[MAX_IV_LEN_IN_BYTES];
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uint16_t numBufferListArray;
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CpaBufferList srcBuffer;
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CpaFlatBuffer bufferListArray[ICP_OCF_DRV_DEFAULT_BUFFLIST_ARRAYS];
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CpaBoolean verifyResult;
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};
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/*Values used to derisk chances of performs being called against
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deregistered sessions (for which the slab page has been reclaimed)
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This is not a fix - since page frames are reclaimed from a slab, one cannot
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rely on that memory not being re-used by another app.*/
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typedef enum {
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ICP_SESSION_INITIALISED = 0x5C5C5C,
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ICP_SESSION_RUNNING = 0x005C00,
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ICP_SESSION_DEREGISTERED = 0xC5C5C5
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} usage_derisk;
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/*
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This is the OCF<->OCF_DRV session object:
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1.The first member is a listNode. These session objects are added to a linked
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list in order to make it easier to remove them all at session exit time.
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2.The second member is used to give the session object state and derisk the
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possibility of OCF batch calls executing against a deregistered session (as
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described above).
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3.The third member is a LAC<->OCF_DRV session handle (initialised with the first
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perform request for that session).
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4.The fourth is the LAC session context. All the parameters for this structure
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are only known when the first perform request for this session occurs. That is
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why the OCF Tolapai Driver only registers a new LAC session at perform time
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*/
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struct icp_drvSessionData {
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struct list_head listNode;
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usage_derisk inUse;
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CpaCySymSessionCtx sessHandle;
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CpaCySymSessionSetupData lacSessCtx;
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};
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/* This struct is required for deferred session
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deregistration as a work queue function can
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only have one argument*/
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struct icp_ocfDrvFreeLacSession {
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CpaCySymSessionCtx sessionToDeregister;
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struct work_struct work;
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};
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int icp_ocfDrvNewSession(device_t dev, uint32_t * sild, struct cryptoini *cri);
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int icp_ocfDrvFreeLACSession(device_t dev, uint64_t sid);
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int icp_ocfDrvSymProcess(device_t dev, struct cryptop *crp, int hint);
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int icp_ocfDrvPkeProcess(device_t dev, struct cryptkop *krp, int hint);
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int icp_ocfDrvReadRandom(void *arg, uint32_t * buf, int maxwords);
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int icp_ocfDrvDeregRetry(CpaCySymSessionCtx sessionToDeregister);
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int icp_ocfDrvSkBuffToBufferList(struct sk_buff *skb,
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CpaBufferList * bufferList);
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int icp_ocfDrvBufferListToSkBuff(CpaBufferList * bufferList,
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struct sk_buff **skb);
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void icp_ocfDrvPtrAndLenToFlatBuffer(void *pData, uint32_t len,
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CpaFlatBuffer * pFlatBuffer);
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void icp_ocfDrvPtrAndLenToBufferList(void *pDataIn, uint32_t length,
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CpaBufferList * pBufferList);
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void icp_ocfDrvBufferListToPtrAndLen(CpaBufferList * pBufferList,
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void **ppDataOut, uint32_t * pLength);
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int icp_ocfDrvBufferListMemInfo(uint16_t numBuffers,
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struct icp_drvBuffListInfo *buffListInfo);
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uint16_t icp_ocfDrvGetSkBuffFrags(struct sk_buff *pSkb);
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void icp_ocfDrvFreeFlatBuffer(CpaFlatBuffer * pFlatBuffer);
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int icp_ocfDrvAllocMetaData(CpaBufferList * pBufferList,
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const struct icp_drvOpData *pOpData);
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void icp_ocfDrvFreeMetaData(CpaBufferList * pBufferList);
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#endif
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/* ICP_OCF_H */
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