27007c6576
the file which is compiled with SSE disabled. The functions set up the FPU context for kernel, and compiler optimizations which could lead to use of XMM registers before the fpu_kern_enter(9) is called or after fpu_kern_leave(9), panic the machine. Discussed with: jmg Sponsored by: The FreeBSD Foundation MFC after: 1 week
105 lines
3.9 KiB
C
105 lines
3.9 KiB
C
/*-
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* Copyright (c) 2010 Konstantin Belousov <kib@FreeBSD.org>
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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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _AESNI_H_
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#define _AESNI_H_
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#include <sys/types.h>
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#include <sys/malloc.h>
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#include <sys/queue.h>
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#include <opencrypto/cryptodev.h>
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#if defined(__amd64__) || (defined(__i386__) && !defined(PC98))
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#include <machine/cpufunc.h>
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#include <machine/cputypes.h>
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#include <machine/md_var.h>
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#include <machine/specialreg.h>
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#endif
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#if defined(__i386__)
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#include <machine/npx.h>
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#elif defined(__amd64__)
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#include <machine/fpu.h>
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#endif
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#define AES128_ROUNDS 10
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#define AES192_ROUNDS 12
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#define AES256_ROUNDS 14
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#define AES_SCHED_LEN ((AES256_ROUNDS + 1) * AES_BLOCK_LEN)
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struct aesni_session {
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uint8_t enc_schedule[AES_SCHED_LEN] __aligned(16);
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uint8_t dec_schedule[AES_SCHED_LEN] __aligned(16);
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uint8_t xts_schedule[AES_SCHED_LEN] __aligned(16);
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uint8_t iv[AES_BLOCK_LEN];
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int algo;
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int rounds;
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/* uint8_t *ses_ictx; */
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/* uint8_t *ses_octx; */
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/* int ses_mlen; */
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int used;
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uint32_t id;
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TAILQ_ENTRY(aesni_session) next;
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struct fpu_kern_ctx *fpu_ctx;
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};
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/*
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* Internal functions, implemented in assembler.
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*/
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void aesni_set_enckey(const uint8_t *userkey,
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uint8_t *encrypt_schedule /*__aligned(16)*/, int number_of_rounds);
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void aesni_set_deckey(const uint8_t *encrypt_schedule /*__aligned(16)*/,
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uint8_t *decrypt_schedule /*__aligned(16)*/, int number_of_rounds);
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/*
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* Slightly more public interfaces.
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*/
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void aesni_encrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to,
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const uint8_t iv[AES_BLOCK_LEN]);
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void aesni_decrypt_cbc(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, uint8_t *buf, const uint8_t iv[AES_BLOCK_LEN]);
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void aesni_encrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to);
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void aesni_decrypt_ecb(int rounds, const void *key_schedule /*__aligned(16)*/,
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size_t len, const uint8_t *from, uint8_t *to);
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void aesni_encrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
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const void *tweak_schedule /*__aligned(16)*/, size_t len,
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const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]);
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void aesni_decrypt_xts(int rounds, const void *data_schedule /*__aligned(16)*/,
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const void *tweak_schedule /*__aligned(16)*/, size_t len,
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const uint8_t *from, uint8_t *to, const uint8_t iv[AES_BLOCK_LEN]);
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int aesni_cipher_setup_common(struct aesni_session *ses, const uint8_t *key,
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int keylen);
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uint8_t *aesni_cipher_alloc(struct cryptodesc *enccrd, struct cryptop *crp,
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int *allocated);
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#endif /* _AESNI_H_ */
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