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006e9a4088
Move platform specific Linux headers under include/os/linux/. Update the build system accordingly to detect the platform. This lays some of the initial groundwork to supporting building for other platforms. As part of this change it was necessary to create both a user and kernel space sys/simd.h header which can be included in either context. No functional change, the source has been refactored and the relevant #include's updated. Reviewed-by: Jorgen Lundman <lundman@lundman.net> Reviewed-by: Igor Kozhukhov <igor@dilos.org> Signed-off-by: Matthew Macy <mmacy@FreeBSD.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #9198
125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#if defined(__x86_64) && defined(HAVE_AES)
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#include <sys/simd.h>
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#include <sys/types.h>
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/* These functions are used to execute AES-NI instructions: */
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extern int rijndael_key_setup_enc_intel(uint32_t rk[],
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const uint32_t cipherKey[], uint64_t keyBits);
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extern int rijndael_key_setup_dec_intel(uint32_t rk[],
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const uint32_t cipherKey[], uint64_t keyBits);
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extern void aes_encrypt_intel(const uint32_t rk[], int Nr,
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const uint32_t pt[4], uint32_t ct[4]);
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extern void aes_decrypt_intel(const uint32_t rk[], int Nr,
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const uint32_t ct[4], uint32_t pt[4]);
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#include <aes/aes_impl.h>
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/*
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* Expand the 32-bit AES cipher key array into the encryption and decryption
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* key schedules.
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*
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* Parameters:
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* key AES key schedule to be initialized
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* keyarr32 User key
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* keyBits AES key size (128, 192, or 256 bits)
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*/
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static void
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aes_aesni_generate(aes_key_t *key, const uint32_t *keyarr32, int keybits)
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{
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kfpu_begin();
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key->nr = rijndael_key_setup_enc_intel(&(key->encr_ks.ks32[0]),
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keyarr32, keybits);
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key->nr = rijndael_key_setup_dec_intel(&(key->decr_ks.ks32[0]),
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keyarr32, keybits);
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kfpu_end();
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}
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/*
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* Encrypt one block of data. The block is assumed to be an array
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* of four uint32_t values, so copy for alignment (and byte-order
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* reversal for little endian systems might be necessary on the
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* input and output byte streams.
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* The size of the key schedule depends on the number of rounds
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* (which can be computed from the size of the key), i.e. 4*(Nr + 1).
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*
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* Parameters:
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* rk Key schedule, of aes_ks_t (60 32-bit integers)
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* Nr Number of rounds
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* pt Input block (plain text)
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* ct Output block (crypto text). Can overlap with pt
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*/
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static void
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aes_aesni_encrypt(const uint32_t rk[], int Nr, const uint32_t pt[4],
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uint32_t ct[4])
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{
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kfpu_begin();
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aes_encrypt_intel(rk, Nr, pt, ct);
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kfpu_end();
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}
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/*
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* Decrypt one block of data. The block is assumed to be an array
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* of four uint32_t values, so copy for alignment (and byte-order
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* reversal for little endian systems might be necessary on the
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* input and output byte streams.
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* The size of the key schedule depends on the number of rounds
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* (which can be computed from the size of the key), i.e. 4*(Nr + 1).
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*
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* Parameters:
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* rk Key schedule, of aes_ks_t (60 32-bit integers)
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* Nr Number of rounds
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* ct Input block (crypto text)
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* pt Output block (plain text). Can overlap with pt
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*/
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static void
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aes_aesni_decrypt(const uint32_t rk[], int Nr, const uint32_t ct[4],
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uint32_t pt[4])
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{
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kfpu_begin();
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aes_decrypt_intel(rk, Nr, ct, pt);
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kfpu_end();
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}
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static boolean_t
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aes_aesni_will_work(void)
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{
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return (kfpu_allowed() && zfs_aes_available());
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}
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const aes_impl_ops_t aes_aesni_impl = {
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.generate = &aes_aesni_generate,
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.encrypt = &aes_aesni_encrypt,
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.decrypt = &aes_aesni_decrypt,
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.is_supported = &aes_aesni_will_work,
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.needs_byteswap = B_FALSE,
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.name = "aesni"
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};
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#endif /* defined(__x86_64) && defined(HAVE_AES) */
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