| /* | |
| * Support for Intel AES-NI instructions. This file contains glue | |
| * code, the real AES implementation is in intel-aes_asm.S. | |
| * | |
| * Copyright (C) 2008, Intel Corp. | |
| * Author: Huang Ying <ying.huang@intel.com> | |
| * | |
| * Added RFC4106 AES-GCM support for 128-bit keys under the AEAD | |
| * interface for 64-bit kernels. | |
| * Authors: Adrian Hoban <adrian.hoban@intel.com> | |
| * Gabriele Paoloni <gabriele.paoloni@intel.com> | |
| * Tadeusz Struk (tadeusz.struk@intel.com) | |
| * Aidan O'Mahony (aidan.o.mahony@intel.com) | |
| * Copyright (c) 2010, Intel Corporation. | |
| * | |
| * This program is free software; you can redistribute it and/or modify | |
| * it under the terms of the GNU General Public License as published by | |
| * the Free Software Foundation; either version 2 of the License, or | |
| * (at your option) any later version. | |
| */ | |
| #include <linux/hardirq.h> | |
| #include <linux/types.h> | |
| #include <linux/crypto.h> | |
| #include <linux/module.h> | |
| #include <linux/err.h> | |
| #include <crypto/algapi.h> | |
| #include <crypto/aes.h> | |
| #include <crypto/cryptd.h> | |
| #include <crypto/ctr.h> | |
| #include <crypto/b128ops.h> | |
| #include <crypto/lrw.h> | |
| #include <crypto/xts.h> | |
| #include <asm/cpu_device_id.h> | |
| #include <asm/fpu/api.h> | |
| #include <asm/crypto/aes.h> | |
| #include <crypto/ablk_helper.h> | |
| #include <crypto/scatterwalk.h> | |
| #include <crypto/internal/aead.h> | |
| #include <linux/workqueue.h> | |
| #include <linux/spinlock.h> | |
| #ifdef CONFIG_X86_64 | |
| #include <asm/crypto/glue_helper.h> | |
| #endif | |
| #define AESNI_ALIGN 16 | |
| #define AES_BLOCK_MASK (~(AES_BLOCK_SIZE - 1)) | |
| #define RFC4106_HASH_SUBKEY_SIZE 16 | |
| /* This data is stored at the end of the crypto_tfm struct. | |
| * It's a type of per "session" data storage location. | |
| * This needs to be 16 byte aligned. | |
| */ | |
| struct aesni_rfc4106_gcm_ctx { | |
| u8 hash_subkey[16] __attribute__ ((__aligned__(AESNI_ALIGN))); | |
| struct crypto_aes_ctx aes_key_expanded | |
| __attribute__ ((__aligned__(AESNI_ALIGN))); | |
| u8 nonce[4]; | |
| }; | |
| struct aesni_lrw_ctx { | |
| struct lrw_table_ctx lrw_table; | |
| u8 raw_aes_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
| }; | |
| struct aesni_xts_ctx { | |
| u8 raw_tweak_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
| u8 raw_crypt_ctx[sizeof(struct crypto_aes_ctx) + AESNI_ALIGN - 1]; | |
| }; | |
| asmlinkage int aesni_set_key(struct crypto_aes_ctx *ctx, const u8 *in_key, | |
| unsigned int key_len); | |
| asmlinkage void aesni_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in); | |
| asmlinkage void aesni_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in); | |
| asmlinkage void aesni_ecb_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len); | |
| asmlinkage void aesni_ecb_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len); | |
| asmlinkage void aesni_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len, u8 *iv); | |
| asmlinkage void aesni_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len, u8 *iv); | |
| int crypto_fpu_init(void); | |
| void crypto_fpu_exit(void); | |
| #define AVX_GEN2_OPTSIZE 640 | |
| #define AVX_GEN4_OPTSIZE 4096 | |
| #ifdef CONFIG_X86_64 | |
| static void (*aesni_ctr_enc_tfm)(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len, u8 *iv); | |
| asmlinkage void aesni_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len, u8 *iv); | |
| asmlinkage void aesni_xts_crypt8(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, bool enc, u8 *iv); | |
| /* asmlinkage void aesni_gcm_enc() | |
| * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
| * u8 *out, Ciphertext output. Encrypt in-place is allowed. | |
| * const u8 *in, Plaintext input | |
| * unsigned long plaintext_len, Length of data in bytes for encryption. | |
| * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
| * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
| * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
| * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
| * const u8 *aad, Additional Authentication Data (AAD) | |
| * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this | |
| * is going to be 8 or 12 bytes | |
| * u8 *auth_tag, Authenticated Tag output. | |
| * unsigned long auth_tag_len), Authenticated Tag Length in bytes. | |
| * Valid values are 16 (most likely), 12 or 8. | |
| */ | |
| asmlinkage void aesni_gcm_enc(void *ctx, u8 *out, | |
| const u8 *in, unsigned long plaintext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| /* asmlinkage void aesni_gcm_dec() | |
| * void *ctx, AES Key schedule. Starts on a 16 byte boundary. | |
| * u8 *out, Plaintext output. Decrypt in-place is allowed. | |
| * const u8 *in, Ciphertext input | |
| * unsigned long ciphertext_len, Length of data in bytes for decryption. | |
| * u8 *iv, Pre-counter block j0: 4 byte salt (from Security Association) | |
| * concatenated with 8 byte Initialisation Vector (from IPSec ESP | |
| * Payload) concatenated with 0x00000001. 16-byte aligned pointer. | |
| * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
| * const u8 *aad, Additional Authentication Data (AAD) | |
| * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this is going | |
| * to be 8 or 12 bytes | |
| * u8 *auth_tag, Authenticated Tag output. | |
| * unsigned long auth_tag_len) Authenticated Tag Length in bytes. | |
| * Valid values are 16 (most likely), 12 or 8. | |
| */ | |
| asmlinkage void aesni_gcm_dec(void *ctx, u8 *out, | |
| const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| #ifdef CONFIG_AS_AVX | |
| asmlinkage void aes_ctr_enc_128_avx_by8(const u8 *in, u8 *iv, | |
| void *keys, u8 *out, unsigned int num_bytes); | |
| asmlinkage void aes_ctr_enc_192_avx_by8(const u8 *in, u8 *iv, | |
| void *keys, u8 *out, unsigned int num_bytes); | |
| asmlinkage void aes_ctr_enc_256_avx_by8(const u8 *in, u8 *iv, | |
| void *keys, u8 *out, unsigned int num_bytes); | |
| /* | |
| * asmlinkage void aesni_gcm_precomp_avx_gen2() | |
| * gcm_data *my_ctx_data, context data | |
| * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
| */ | |
| asmlinkage void aesni_gcm_precomp_avx_gen2(void *my_ctx_data, u8 *hash_subkey); | |
| asmlinkage void aesni_gcm_enc_avx_gen2(void *ctx, u8 *out, | |
| const u8 *in, unsigned long plaintext_len, u8 *iv, | |
| const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| asmlinkage void aesni_gcm_dec_avx_gen2(void *ctx, u8 *out, | |
| const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
| const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| static void aesni_gcm_enc_avx(void *ctx, u8 *out, | |
| const u8 *in, unsigned long plaintext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len) | |
| { | |
| struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; | |
| if ((plaintext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)){ | |
| aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } else { | |
| aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
| aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } | |
| } | |
| static void aesni_gcm_dec_avx(void *ctx, u8 *out, | |
| const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len) | |
| { | |
| struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; | |
| if ((ciphertext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) { | |
| aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } else { | |
| aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
| aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } | |
| } | |
| #endif | |
| #ifdef CONFIG_AS_AVX2 | |
| /* | |
| * asmlinkage void aesni_gcm_precomp_avx_gen4() | |
| * gcm_data *my_ctx_data, context data | |
| * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary. | |
| */ | |
| asmlinkage void aesni_gcm_precomp_avx_gen4(void *my_ctx_data, u8 *hash_subkey); | |
| asmlinkage void aesni_gcm_enc_avx_gen4(void *ctx, u8 *out, | |
| const u8 *in, unsigned long plaintext_len, u8 *iv, | |
| const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| asmlinkage void aesni_gcm_dec_avx_gen4(void *ctx, u8 *out, | |
| const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
| const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| static void aesni_gcm_enc_avx2(void *ctx, u8 *out, | |
| const u8 *in, unsigned long plaintext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len) | |
| { | |
| struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; | |
| if ((plaintext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) { | |
| aesni_gcm_enc(ctx, out, in, plaintext_len, iv, hash_subkey, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } else if (plaintext_len < AVX_GEN4_OPTSIZE) { | |
| aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
| aesni_gcm_enc_avx_gen2(ctx, out, in, plaintext_len, iv, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } else { | |
| aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
| aesni_gcm_enc_avx_gen4(ctx, out, in, plaintext_len, iv, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } | |
| } | |
| static void aesni_gcm_dec_avx2(void *ctx, u8 *out, | |
| const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len) | |
| { | |
| struct crypto_aes_ctx *aes_ctx = (struct crypto_aes_ctx*)ctx; | |
| if ((ciphertext_len < AVX_GEN2_OPTSIZE) || (aes_ctx-> key_length != AES_KEYSIZE_128)) { | |
| aesni_gcm_dec(ctx, out, in, ciphertext_len, iv, hash_subkey, | |
| aad, aad_len, auth_tag, auth_tag_len); | |
| } else if (ciphertext_len < AVX_GEN4_OPTSIZE) { | |
| aesni_gcm_precomp_avx_gen2(ctx, hash_subkey); | |
| aesni_gcm_dec_avx_gen2(ctx, out, in, ciphertext_len, iv, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } else { | |
| aesni_gcm_precomp_avx_gen4(ctx, hash_subkey); | |
| aesni_gcm_dec_avx_gen4(ctx, out, in, ciphertext_len, iv, aad, | |
| aad_len, auth_tag, auth_tag_len); | |
| } | |
| } | |
| #endif | |
| static void (*aesni_gcm_enc_tfm)(void *ctx, u8 *out, | |
| const u8 *in, unsigned long plaintext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| static void (*aesni_gcm_dec_tfm)(void *ctx, u8 *out, | |
| const u8 *in, unsigned long ciphertext_len, u8 *iv, | |
| u8 *hash_subkey, const u8 *aad, unsigned long aad_len, | |
| u8 *auth_tag, unsigned long auth_tag_len); | |
| static inline struct | |
| aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm) | |
| { | |
| unsigned long align = AESNI_ALIGN; | |
| if (align <= crypto_tfm_ctx_alignment()) | |
| align = 1; | |
| return PTR_ALIGN(crypto_aead_ctx(tfm), align); | |
| } | |
| #endif | |
| static inline struct crypto_aes_ctx *aes_ctx(void *raw_ctx) | |
| { | |
| unsigned long addr = (unsigned long)raw_ctx; | |
| unsigned long align = AESNI_ALIGN; | |
| if (align <= crypto_tfm_ctx_alignment()) | |
| align = 1; | |
| return (struct crypto_aes_ctx *)ALIGN(addr, align); | |
| } | |
| static int aes_set_key_common(struct crypto_tfm *tfm, void *raw_ctx, | |
| const u8 *in_key, unsigned int key_len) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(raw_ctx); | |
| u32 *flags = &tfm->crt_flags; | |
| int err; | |
| if (key_len != AES_KEYSIZE_128 && key_len != AES_KEYSIZE_192 && | |
| key_len != AES_KEYSIZE_256) { | |
| *flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; | |
| return -EINVAL; | |
| } | |
| if (!irq_fpu_usable()) | |
| err = crypto_aes_expand_key(ctx, in_key, key_len); | |
| else { | |
| kernel_fpu_begin(); | |
| err = aesni_set_key(ctx, in_key, key_len); | |
| kernel_fpu_end(); | |
| } | |
| return err; | |
| } | |
| static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, | |
| unsigned int key_len) | |
| { | |
| return aes_set_key_common(tfm, crypto_tfm_ctx(tfm), in_key, key_len); | |
| } | |
| static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
| if (!irq_fpu_usable()) | |
| crypto_aes_encrypt_x86(ctx, dst, src); | |
| else { | |
| kernel_fpu_begin(); | |
| aesni_enc(ctx, dst, src); | |
| kernel_fpu_end(); | |
| } | |
| } | |
| static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
| if (!irq_fpu_usable()) | |
| crypto_aes_decrypt_x86(ctx, dst, src); | |
| else { | |
| kernel_fpu_begin(); | |
| aesni_dec(ctx, dst, src); | |
| kernel_fpu_end(); | |
| } | |
| } | |
| static void __aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
| aesni_enc(ctx, dst, src); | |
| } | |
| static void __aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(tfm)); | |
| aesni_dec(ctx, dst, src); | |
| } | |
| static int ecb_encrypt(struct blkcipher_desc *desc, | |
| struct scatterlist *dst, struct scatterlist *src, | |
| unsigned int nbytes) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
| struct blkcipher_walk walk; | |
| int err; | |
| blkcipher_walk_init(&walk, dst, src, nbytes); | |
| err = blkcipher_walk_virt(desc, &walk); | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| while ((nbytes = walk.nbytes)) { | |
| aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
| nbytes & AES_BLOCK_MASK); | |
| nbytes &= AES_BLOCK_SIZE - 1; | |
| err = blkcipher_walk_done(desc, &walk, nbytes); | |
| } | |
| kernel_fpu_end(); | |
| return err; | |
| } | |
| static int ecb_decrypt(struct blkcipher_desc *desc, | |
| struct scatterlist *dst, struct scatterlist *src, | |
| unsigned int nbytes) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
| struct blkcipher_walk walk; | |
| int err; | |
| blkcipher_walk_init(&walk, dst, src, nbytes); | |
| err = blkcipher_walk_virt(desc, &walk); | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| while ((nbytes = walk.nbytes)) { | |
| aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
| nbytes & AES_BLOCK_MASK); | |
| nbytes &= AES_BLOCK_SIZE - 1; | |
| err = blkcipher_walk_done(desc, &walk, nbytes); | |
| } | |
| kernel_fpu_end(); | |
| return err; | |
| } | |
| static int cbc_encrypt(struct blkcipher_desc *desc, | |
| struct scatterlist *dst, struct scatterlist *src, | |
| unsigned int nbytes) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
| struct blkcipher_walk walk; | |
| int err; | |
| blkcipher_walk_init(&walk, dst, src, nbytes); | |
| err = blkcipher_walk_virt(desc, &walk); | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| while ((nbytes = walk.nbytes)) { | |
| aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
| nbytes & AES_BLOCK_MASK, walk.iv); | |
| nbytes &= AES_BLOCK_SIZE - 1; | |
| err = blkcipher_walk_done(desc, &walk, nbytes); | |
| } | |
| kernel_fpu_end(); | |
| return err; | |
| } | |
| static int cbc_decrypt(struct blkcipher_desc *desc, | |
| struct scatterlist *dst, struct scatterlist *src, | |
| unsigned int nbytes) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
| struct blkcipher_walk walk; | |
| int err; | |
| blkcipher_walk_init(&walk, dst, src, nbytes); | |
| err = blkcipher_walk_virt(desc, &walk); | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| while ((nbytes = walk.nbytes)) { | |
| aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
| nbytes & AES_BLOCK_MASK, walk.iv); | |
| nbytes &= AES_BLOCK_SIZE - 1; | |
| err = blkcipher_walk_done(desc, &walk, nbytes); | |
| } | |
| kernel_fpu_end(); | |
| return err; | |
| } | |
| #ifdef CONFIG_X86_64 | |
| static void ctr_crypt_final(struct crypto_aes_ctx *ctx, | |
| struct blkcipher_walk *walk) | |
| { | |
| u8 *ctrblk = walk->iv; | |
| u8 keystream[AES_BLOCK_SIZE]; | |
| u8 *src = walk->src.virt.addr; | |
| u8 *dst = walk->dst.virt.addr; | |
| unsigned int nbytes = walk->nbytes; | |
| aesni_enc(ctx, keystream, ctrblk); | |
| crypto_xor(keystream, src, nbytes); | |
| memcpy(dst, keystream, nbytes); | |
| crypto_inc(ctrblk, AES_BLOCK_SIZE); | |
| } | |
| #ifdef CONFIG_AS_AVX | |
| static void aesni_ctr_enc_avx_tfm(struct crypto_aes_ctx *ctx, u8 *out, | |
| const u8 *in, unsigned int len, u8 *iv) | |
| { | |
| /* | |
| * based on key length, override with the by8 version | |
| * of ctr mode encryption/decryption for improved performance | |
| * aes_set_key_common() ensures that key length is one of | |
| * {128,192,256} | |
| */ | |
| if (ctx->key_length == AES_KEYSIZE_128) | |
| aes_ctr_enc_128_avx_by8(in, iv, (void *)ctx, out, len); | |
| else if (ctx->key_length == AES_KEYSIZE_192) | |
| aes_ctr_enc_192_avx_by8(in, iv, (void *)ctx, out, len); | |
| else | |
| aes_ctr_enc_256_avx_by8(in, iv, (void *)ctx, out, len); | |
| } | |
| #endif | |
| static int ctr_crypt(struct blkcipher_desc *desc, | |
| struct scatterlist *dst, struct scatterlist *src, | |
| unsigned int nbytes) | |
| { | |
| struct crypto_aes_ctx *ctx = aes_ctx(crypto_blkcipher_ctx(desc->tfm)); | |
| struct blkcipher_walk walk; | |
| int err; | |
| blkcipher_walk_init(&walk, dst, src, nbytes); | |
| err = blkcipher_walk_virt_block(desc, &walk, AES_BLOCK_SIZE); | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) { | |
| aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr, | |
| nbytes & AES_BLOCK_MASK, walk.iv); | |
| nbytes &= AES_BLOCK_SIZE - 1; | |
| err = blkcipher_walk_done(desc, &walk, nbytes); | |
| } | |
| if (walk.nbytes) { | |
| ctr_crypt_final(ctx, &walk); | |
| err = blkcipher_walk_done(desc, &walk, 0); | |
| } | |
| kernel_fpu_end(); | |
| return err; | |
| } | |
| #endif | |
| static int ablk_ecb_init(struct crypto_tfm *tfm) | |
| { | |
| return ablk_init_common(tfm, "__driver-ecb-aes-aesni"); | |
| } | |
| static int ablk_cbc_init(struct crypto_tfm *tfm) | |
| { | |
| return ablk_init_common(tfm, "__driver-cbc-aes-aesni"); | |
| } | |
| #ifdef CONFIG_X86_64 | |
| static int ablk_ctr_init(struct crypto_tfm *tfm) | |
| { | |
| return ablk_init_common(tfm, "__driver-ctr-aes-aesni"); | |
| } | |
| #endif | |
| #if IS_ENABLED(CONFIG_CRYPTO_PCBC) | |
| static int ablk_pcbc_init(struct crypto_tfm *tfm) | |
| { | |
| return ablk_init_common(tfm, "fpu(pcbc(__driver-aes-aesni))"); | |
| } | |
| #endif | |
| static void lrw_xts_encrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) | |
| { | |
| aesni_ecb_enc(ctx, blks, blks, nbytes); | |
| } | |
| static void lrw_xts_decrypt_callback(void *ctx, u8 *blks, unsigned int nbytes) | |
| { | |
| aesni_ecb_dec(ctx, blks, blks, nbytes); | |
| } | |
| static int lrw_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
| unsigned int keylen) | |
| { | |
| struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
| int err; | |
| err = aes_set_key_common(tfm, ctx->raw_aes_ctx, key, | |
| keylen - AES_BLOCK_SIZE); | |
| if (err) | |
| return err; | |
| return lrw_init_table(&ctx->lrw_table, key + keylen - AES_BLOCK_SIZE); | |
| } | |
| static void lrw_aesni_exit_tfm(struct crypto_tfm *tfm) | |
| { | |
| struct aesni_lrw_ctx *ctx = crypto_tfm_ctx(tfm); | |
| lrw_free_table(&ctx->lrw_table); | |
| } | |
| static int lrw_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
| struct scatterlist *src, unsigned int nbytes) | |
| { | |
| struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
| be128 buf[8]; | |
| struct lrw_crypt_req req = { | |
| .tbuf = buf, | |
| .tbuflen = sizeof(buf), | |
| .table_ctx = &ctx->lrw_table, | |
| .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
| .crypt_fn = lrw_xts_encrypt_callback, | |
| }; | |
| int ret; | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
| kernel_fpu_end(); | |
| return ret; | |
| } | |
| static int lrw_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
| struct scatterlist *src, unsigned int nbytes) | |
| { | |
| struct aesni_lrw_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
| be128 buf[8]; | |
| struct lrw_crypt_req req = { | |
| .tbuf = buf, | |
| .tbuflen = sizeof(buf), | |
| .table_ctx = &ctx->lrw_table, | |
| .crypt_ctx = aes_ctx(ctx->raw_aes_ctx), | |
| .crypt_fn = lrw_xts_decrypt_callback, | |
| }; | |
| int ret; | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| ret = lrw_crypt(desc, dst, src, nbytes, &req); | |
| kernel_fpu_end(); | |
| return ret; | |
| } | |
| static int xts_aesni_setkey(struct crypto_tfm *tfm, const u8 *key, | |
| unsigned int keylen) | |
| { | |
| struct aesni_xts_ctx *ctx = crypto_tfm_ctx(tfm); | |
| int err; | |
| err = xts_check_key(tfm, key, keylen); | |
| if (err) | |
| return err; | |
| /* first half of xts-key is for crypt */ | |
| err = aes_set_key_common(tfm, ctx->raw_crypt_ctx, key, keylen / 2); | |
| if (err) | |
| return err; | |
| /* second half of xts-key is for tweak */ | |
| return aes_set_key_common(tfm, ctx->raw_tweak_ctx, key + keylen / 2, | |
| keylen / 2); | |
| } | |
| static void aesni_xts_tweak(void *ctx, u8 *out, const u8 *in) | |
| { | |
| aesni_enc(ctx, out, in); | |
| } | |
| #ifdef CONFIG_X86_64 | |
| static void aesni_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
| { | |
| glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_enc)); | |
| } | |
| static void aesni_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
| { | |
| glue_xts_crypt_128bit_one(ctx, dst, src, iv, GLUE_FUNC_CAST(aesni_dec)); | |
| } | |
| static void aesni_xts_enc8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
| { | |
| aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, true, (u8 *)iv); | |
| } | |
| static void aesni_xts_dec8(void *ctx, u128 *dst, const u128 *src, le128 *iv) | |
| { | |
| aesni_xts_crypt8(ctx, (u8 *)dst, (const u8 *)src, false, (u8 *)iv); | |
| } | |
| static const struct common_glue_ctx aesni_enc_xts = { | |
| .num_funcs = 2, | |
| .fpu_blocks_limit = 1, | |
| .funcs = { { | |
| .num_blocks = 8, | |
| .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc8) } | |
| }, { | |
| .num_blocks = 1, | |
| .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_enc) } | |
| } } | |
| }; | |
| static const struct common_glue_ctx aesni_dec_xts = { | |
| .num_funcs = 2, | |
| .fpu_blocks_limit = 1, | |
| .funcs = { { | |
| .num_blocks = 8, | |
| .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec8) } | |
| }, { | |
| .num_blocks = 1, | |
| .fn_u = { .xts = GLUE_XTS_FUNC_CAST(aesni_xts_dec) } | |
| } } | |
| }; | |
| static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
| struct scatterlist *src, unsigned int nbytes) | |
| { | |
| struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
| return glue_xts_crypt_128bit(&aesni_enc_xts, desc, dst, src, nbytes, | |
| XTS_TWEAK_CAST(aesni_xts_tweak), | |
| aes_ctx(ctx->raw_tweak_ctx), | |
| aes_ctx(ctx->raw_crypt_ctx)); | |
| } | |
| static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
| struct scatterlist *src, unsigned int nbytes) | |
| { | |
| struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
| return glue_xts_crypt_128bit(&aesni_dec_xts, desc, dst, src, nbytes, | |
| XTS_TWEAK_CAST(aesni_xts_tweak), | |
| aes_ctx(ctx->raw_tweak_ctx), | |
| aes_ctx(ctx->raw_crypt_ctx)); | |
| } | |
| #else | |
| static int xts_encrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
| struct scatterlist *src, unsigned int nbytes) | |
| { | |
| struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
| be128 buf[8]; | |
| struct xts_crypt_req req = { | |
| .tbuf = buf, | |
| .tbuflen = sizeof(buf), | |
| .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
| .tweak_fn = aesni_xts_tweak, | |
| .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), | |
| .crypt_fn = lrw_xts_encrypt_callback, | |
| }; | |
| int ret; | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| ret = xts_crypt(desc, dst, src, nbytes, &req); | |
| kernel_fpu_end(); | |
| return ret; | |
| } | |
| static int xts_decrypt(struct blkcipher_desc *desc, struct scatterlist *dst, | |
| struct scatterlist *src, unsigned int nbytes) | |
| { | |
| struct aesni_xts_ctx *ctx = crypto_blkcipher_ctx(desc->tfm); | |
| be128 buf[8]; | |
| struct xts_crypt_req req = { | |
| .tbuf = buf, | |
| .tbuflen = sizeof(buf), | |
| .tweak_ctx = aes_ctx(ctx->raw_tweak_ctx), | |
| .tweak_fn = aesni_xts_tweak, | |
| .crypt_ctx = aes_ctx(ctx->raw_crypt_ctx), | |
| .crypt_fn = lrw_xts_decrypt_callback, | |
| }; | |
| int ret; | |
| desc->flags &= ~CRYPTO_TFM_REQ_MAY_SLEEP; | |
| kernel_fpu_begin(); | |
| ret = xts_crypt(desc, dst, src, nbytes, &req); | |
| kernel_fpu_end(); | |
| return ret; | |
| } | |
| #endif | |
| #ifdef CONFIG_X86_64 | |
| static int rfc4106_init(struct crypto_aead *aead) | |
| { | |
| struct cryptd_aead *cryptd_tfm; | |
| struct cryptd_aead **ctx = crypto_aead_ctx(aead); | |
| cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", | |
| CRYPTO_ALG_INTERNAL, | |
| CRYPTO_ALG_INTERNAL); | |
| if (IS_ERR(cryptd_tfm)) | |
| return PTR_ERR(cryptd_tfm); | |
| *ctx = cryptd_tfm; | |
| crypto_aead_set_reqsize(aead, crypto_aead_reqsize(&cryptd_tfm->base)); | |
| return 0; | |
| } | |
| static void rfc4106_exit(struct crypto_aead *aead) | |
| { | |
| struct cryptd_aead **ctx = crypto_aead_ctx(aead); | |
| cryptd_free_aead(*ctx); | |
| } | |
| static int | |
| rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len) | |
| { | |
| struct crypto_cipher *tfm; | |
| int ret; | |
| tfm = crypto_alloc_cipher("aes", 0, 0); | |
| if (IS_ERR(tfm)) | |
| return PTR_ERR(tfm); | |
| ret = crypto_cipher_setkey(tfm, key, key_len); | |
| if (ret) | |
| goto out_free_cipher; | |
| /* Clear the data in the hash sub key container to zero.*/ | |
| /* We want to cipher all zeros to create the hash sub key. */ | |
| memset(hash_subkey, 0, RFC4106_HASH_SUBKEY_SIZE); | |
| crypto_cipher_encrypt_one(tfm, hash_subkey, hash_subkey); | |
| out_free_cipher: | |
| crypto_free_cipher(tfm); | |
| return ret; | |
| } | |
| static int common_rfc4106_set_key(struct crypto_aead *aead, const u8 *key, | |
| unsigned int key_len) | |
| { | |
| struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(aead); | |
| if (key_len < 4) { | |
| crypto_aead_set_flags(aead, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
| return -EINVAL; | |
| } | |
| /*Account for 4 byte nonce at the end.*/ | |
| key_len -= 4; | |
| memcpy(ctx->nonce, key + key_len, sizeof(ctx->nonce)); | |
| return aes_set_key_common(crypto_aead_tfm(aead), | |
| &ctx->aes_key_expanded, key, key_len) ?: | |
| rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len); | |
| } | |
| static int rfc4106_set_key(struct crypto_aead *parent, const u8 *key, | |
| unsigned int key_len) | |
| { | |
| struct cryptd_aead **ctx = crypto_aead_ctx(parent); | |
| struct cryptd_aead *cryptd_tfm = *ctx; | |
| return crypto_aead_setkey(&cryptd_tfm->base, key, key_len); | |
| } | |
| static int common_rfc4106_set_authsize(struct crypto_aead *aead, | |
| unsigned int authsize) | |
| { | |
| switch (authsize) { | |
| case 8: | |
| case 12: | |
| case 16: | |
| break; | |
| default: | |
| return -EINVAL; | |
| } | |
| return 0; | |
| } | |
| /* This is the Integrity Check Value (aka the authentication tag length and can | |
| * be 8, 12 or 16 bytes long. */ | |
| static int rfc4106_set_authsize(struct crypto_aead *parent, | |
| unsigned int authsize) | |
| { | |
| struct cryptd_aead **ctx = crypto_aead_ctx(parent); | |
| struct cryptd_aead *cryptd_tfm = *ctx; | |
| return crypto_aead_setauthsize(&cryptd_tfm->base, authsize); | |
| } | |
| static int helper_rfc4106_encrypt(struct aead_request *req) | |
| { | |
| u8 one_entry_in_sg = 0; | |
| u8 *src, *dst, *assoc; | |
| __be32 counter = cpu_to_be32(1); | |
| struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
| struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
| void *aes_ctx = &(ctx->aes_key_expanded); | |
| unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
| u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN))); | |
| struct scatter_walk src_sg_walk; | |
| struct scatter_walk dst_sg_walk = {}; | |
| unsigned int i; | |
| /* Assuming we are supporting rfc4106 64-bit extended */ | |
| /* sequence numbers We need to have the AAD length equal */ | |
| /* to 16 or 20 bytes */ | |
| if (unlikely(req->assoclen != 16 && req->assoclen != 20)) | |
| return -EINVAL; | |
| /* IV below built */ | |
| for (i = 0; i < 4; i++) | |
| *(iv+i) = ctx->nonce[i]; | |
| for (i = 0; i < 8; i++) | |
| *(iv+4+i) = req->iv[i]; | |
| *((__be32 *)(iv+12)) = counter; | |
| if (sg_is_last(req->src) && | |
| req->src->offset + req->src->length <= PAGE_SIZE && | |
| sg_is_last(req->dst) && | |
| req->dst->offset + req->dst->length <= PAGE_SIZE) { | |
| one_entry_in_sg = 1; | |
| scatterwalk_start(&src_sg_walk, req->src); | |
| assoc = scatterwalk_map(&src_sg_walk); | |
| src = assoc + req->assoclen; | |
| dst = src; | |
| if (unlikely(req->src != req->dst)) { | |
| scatterwalk_start(&dst_sg_walk, req->dst); | |
| dst = scatterwalk_map(&dst_sg_walk) + req->assoclen; | |
| } | |
| } else { | |
| /* Allocate memory for src, dst, assoc */ | |
| assoc = kmalloc(req->cryptlen + auth_tag_len + req->assoclen, | |
| GFP_ATOMIC); | |
| if (unlikely(!assoc)) | |
| return -ENOMEM; | |
| scatterwalk_map_and_copy(assoc, req->src, 0, | |
| req->assoclen + req->cryptlen, 0); | |
| src = assoc + req->assoclen; | |
| dst = src; | |
| } | |
| kernel_fpu_begin(); | |
| aesni_gcm_enc_tfm(aes_ctx, dst, src, req->cryptlen, iv, | |
| ctx->hash_subkey, assoc, req->assoclen - 8, | |
| dst + req->cryptlen, auth_tag_len); | |
| kernel_fpu_end(); | |
| /* The authTag (aka the Integrity Check Value) needs to be written | |
| * back to the packet. */ | |
| if (one_entry_in_sg) { | |
| if (unlikely(req->src != req->dst)) { | |
| scatterwalk_unmap(dst - req->assoclen); | |
| scatterwalk_advance(&dst_sg_walk, req->dst->length); | |
| scatterwalk_done(&dst_sg_walk, 1, 0); | |
| } | |
| scatterwalk_unmap(assoc); | |
| scatterwalk_advance(&src_sg_walk, req->src->length); | |
| scatterwalk_done(&src_sg_walk, req->src == req->dst, 0); | |
| } else { | |
| scatterwalk_map_and_copy(dst, req->dst, req->assoclen, | |
| req->cryptlen + auth_tag_len, 1); | |
| kfree(assoc); | |
| } | |
| return 0; | |
| } | |
| static int helper_rfc4106_decrypt(struct aead_request *req) | |
| { | |
| u8 one_entry_in_sg = 0; | |
| u8 *src, *dst, *assoc; | |
| unsigned long tempCipherLen = 0; | |
| __be32 counter = cpu_to_be32(1); | |
| int retval = 0; | |
| struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
| struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm); | |
| void *aes_ctx = &(ctx->aes_key_expanded); | |
| unsigned long auth_tag_len = crypto_aead_authsize(tfm); | |
| u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN))); | |
| u8 authTag[16]; | |
| struct scatter_walk src_sg_walk; | |
| struct scatter_walk dst_sg_walk = {}; | |
| unsigned int i; | |
| if (unlikely(req->assoclen != 16 && req->assoclen != 20)) | |
| return -EINVAL; | |
| /* Assuming we are supporting rfc4106 64-bit extended */ | |
| /* sequence numbers We need to have the AAD length */ | |
| /* equal to 16 or 20 bytes */ | |
| tempCipherLen = (unsigned long)(req->cryptlen - auth_tag_len); | |
| /* IV below built */ | |
| for (i = 0; i < 4; i++) | |
| *(iv+i) = ctx->nonce[i]; | |
| for (i = 0; i < 8; i++) | |
| *(iv+4+i) = req->iv[i]; | |
| *((__be32 *)(iv+12)) = counter; | |
| if (sg_is_last(req->src) && | |
| req->src->offset + req->src->length <= PAGE_SIZE && | |
| sg_is_last(req->dst) && | |
| req->dst->offset + req->dst->length <= PAGE_SIZE) { | |
| one_entry_in_sg = 1; | |
| scatterwalk_start(&src_sg_walk, req->src); | |
| assoc = scatterwalk_map(&src_sg_walk); | |
| src = assoc + req->assoclen; | |
| dst = src; | |
| if (unlikely(req->src != req->dst)) { | |
| scatterwalk_start(&dst_sg_walk, req->dst); | |
| dst = scatterwalk_map(&dst_sg_walk) + req->assoclen; | |
| } | |
| } else { | |
| /* Allocate memory for src, dst, assoc */ | |
| assoc = kmalloc(req->cryptlen + req->assoclen, GFP_ATOMIC); | |
| if (!assoc) | |
| return -ENOMEM; | |
| scatterwalk_map_and_copy(assoc, req->src, 0, | |
| req->assoclen + req->cryptlen, 0); | |
| src = assoc + req->assoclen; | |
| dst = src; | |
| } | |
| kernel_fpu_begin(); | |
| aesni_gcm_dec_tfm(aes_ctx, dst, src, tempCipherLen, iv, | |
| ctx->hash_subkey, assoc, req->assoclen - 8, | |
| authTag, auth_tag_len); | |
| kernel_fpu_end(); | |
| /* Compare generated tag with passed in tag. */ | |
| retval = crypto_memneq(src + tempCipherLen, authTag, auth_tag_len) ? | |
| -EBADMSG : 0; | |
| if (one_entry_in_sg) { | |
| if (unlikely(req->src != req->dst)) { | |
| scatterwalk_unmap(dst - req->assoclen); | |
| scatterwalk_advance(&dst_sg_walk, req->dst->length); | |
| scatterwalk_done(&dst_sg_walk, 1, 0); | |
| } | |
| scatterwalk_unmap(assoc); | |
| scatterwalk_advance(&src_sg_walk, req->src->length); | |
| scatterwalk_done(&src_sg_walk, req->src == req->dst, 0); | |
| } else { | |
| scatterwalk_map_and_copy(dst, req->dst, req->assoclen, | |
| tempCipherLen, 1); | |
| kfree(assoc); | |
| } | |
| return retval; | |
| } | |
| static int rfc4106_encrypt(struct aead_request *req) | |
| { | |
| struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
| struct cryptd_aead **ctx = crypto_aead_ctx(tfm); | |
| struct cryptd_aead *cryptd_tfm = *ctx; | |
| tfm = &cryptd_tfm->base; | |
| if (irq_fpu_usable() && (!in_atomic() || | |
| !cryptd_aead_queued(cryptd_tfm))) | |
| tfm = cryptd_aead_child(cryptd_tfm); | |
| aead_request_set_tfm(req, tfm); | |
| return crypto_aead_encrypt(req); | |
| } | |
| static int rfc4106_decrypt(struct aead_request *req) | |
| { | |
| struct crypto_aead *tfm = crypto_aead_reqtfm(req); | |
| struct cryptd_aead **ctx = crypto_aead_ctx(tfm); | |
| struct cryptd_aead *cryptd_tfm = *ctx; | |
| tfm = &cryptd_tfm->base; | |
| if (irq_fpu_usable() && (!in_atomic() || | |
| !cryptd_aead_queued(cryptd_tfm))) | |
| tfm = cryptd_aead_child(cryptd_tfm); | |
| aead_request_set_tfm(req, tfm); | |
| return crypto_aead_decrypt(req); | |
| } | |
| #endif | |
| static struct crypto_alg aesni_algs[] = { { | |
| .cra_name = "aes", | |
| .cra_driver_name = "aes-aesni", | |
| .cra_priority = 300, | |
| .cra_flags = CRYPTO_ALG_TYPE_CIPHER, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
| AESNI_ALIGN - 1, | |
| .cra_alignmask = 0, | |
| .cra_module = THIS_MODULE, | |
| .cra_u = { | |
| .cipher = { | |
| .cia_min_keysize = AES_MIN_KEY_SIZE, | |
| .cia_max_keysize = AES_MAX_KEY_SIZE, | |
| .cia_setkey = aes_set_key, | |
| .cia_encrypt = aes_encrypt, | |
| .cia_decrypt = aes_decrypt | |
| } | |
| } | |
| }, { | |
| .cra_name = "__aes-aesni", | |
| .cra_driver_name = "__driver-aes-aesni", | |
| .cra_priority = 0, | |
| .cra_flags = CRYPTO_ALG_TYPE_CIPHER | CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
| AESNI_ALIGN - 1, | |
| .cra_alignmask = 0, | |
| .cra_module = THIS_MODULE, | |
| .cra_u = { | |
| .cipher = { | |
| .cia_min_keysize = AES_MIN_KEY_SIZE, | |
| .cia_max_keysize = AES_MAX_KEY_SIZE, | |
| .cia_setkey = aes_set_key, | |
| .cia_encrypt = __aes_encrypt, | |
| .cia_decrypt = __aes_decrypt | |
| } | |
| } | |
| }, { | |
| .cra_name = "__ecb-aes-aesni", | |
| .cra_driver_name = "__driver-ecb-aes-aesni", | |
| .cra_priority = 0, | |
| .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | | |
| CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
| AESNI_ALIGN - 1, | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_blkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_u = { | |
| .blkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .setkey = aes_set_key, | |
| .encrypt = ecb_encrypt, | |
| .decrypt = ecb_decrypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "__cbc-aes-aesni", | |
| .cra_driver_name = "__driver-cbc-aes-aesni", | |
| .cra_priority = 0, | |
| .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | | |
| CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
| AESNI_ALIGN - 1, | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_blkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_u = { | |
| .blkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .setkey = aes_set_key, | |
| .encrypt = cbc_encrypt, | |
| .decrypt = cbc_decrypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "ecb(aes)", | |
| .cra_driver_name = "ecb-aes-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct async_helper_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_ablkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_init = ablk_ecb_init, | |
| .cra_exit = ablk_exit, | |
| .cra_u = { | |
| .ablkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .setkey = ablk_set_key, | |
| .encrypt = ablk_encrypt, | |
| .decrypt = ablk_decrypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "cbc(aes)", | |
| .cra_driver_name = "cbc-aes-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct async_helper_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_ablkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_init = ablk_cbc_init, | |
| .cra_exit = ablk_exit, | |
| .cra_u = { | |
| .ablkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = ablk_set_key, | |
| .encrypt = ablk_encrypt, | |
| .decrypt = ablk_decrypt, | |
| }, | |
| }, | |
| #ifdef CONFIG_X86_64 | |
| }, { | |
| .cra_name = "__ctr-aes-aesni", | |
| .cra_driver_name = "__driver-ctr-aes-aesni", | |
| .cra_priority = 0, | |
| .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | | |
| CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = 1, | |
| .cra_ctxsize = sizeof(struct crypto_aes_ctx) + | |
| AESNI_ALIGN - 1, | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_blkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_u = { | |
| .blkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = aes_set_key, | |
| .encrypt = ctr_crypt, | |
| .decrypt = ctr_crypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "ctr(aes)", | |
| .cra_driver_name = "ctr-aes-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = 1, | |
| .cra_ctxsize = sizeof(struct async_helper_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_ablkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_init = ablk_ctr_init, | |
| .cra_exit = ablk_exit, | |
| .cra_u = { | |
| .ablkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = ablk_set_key, | |
| .encrypt = ablk_encrypt, | |
| .decrypt = ablk_encrypt, | |
| .geniv = "chainiv", | |
| }, | |
| }, | |
| #endif | |
| #if IS_ENABLED(CONFIG_CRYPTO_PCBC) | |
| }, { | |
| .cra_name = "pcbc(aes)", | |
| .cra_driver_name = "pcbc-aes-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct async_helper_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_ablkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_init = ablk_pcbc_init, | |
| .cra_exit = ablk_exit, | |
| .cra_u = { | |
| .ablkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = ablk_set_key, | |
| .encrypt = ablk_encrypt, | |
| .decrypt = ablk_decrypt, | |
| }, | |
| }, | |
| #endif | |
| }, { | |
| .cra_name = "__lrw-aes-aesni", | |
| .cra_driver_name = "__driver-lrw-aes-aesni", | |
| .cra_priority = 0, | |
| .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | | |
| CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct aesni_lrw_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_blkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_exit = lrw_aesni_exit_tfm, | |
| .cra_u = { | |
| .blkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = lrw_aesni_setkey, | |
| .encrypt = lrw_encrypt, | |
| .decrypt = lrw_decrypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "__xts-aes-aesni", | |
| .cra_driver_name = "__driver-xts-aes-aesni", | |
| .cra_priority = 0, | |
| .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | | |
| CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct aesni_xts_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_blkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_u = { | |
| .blkcipher = { | |
| .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
| .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = xts_aesni_setkey, | |
| .encrypt = xts_encrypt, | |
| .decrypt = xts_decrypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "lrw(aes)", | |
| .cra_driver_name = "lrw-aes-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct async_helper_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_ablkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_init = ablk_init, | |
| .cra_exit = ablk_exit, | |
| .cra_u = { | |
| .ablkcipher = { | |
| .min_keysize = AES_MIN_KEY_SIZE + AES_BLOCK_SIZE, | |
| .max_keysize = AES_MAX_KEY_SIZE + AES_BLOCK_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = ablk_set_key, | |
| .encrypt = ablk_encrypt, | |
| .decrypt = ablk_decrypt, | |
| }, | |
| }, | |
| }, { | |
| .cra_name = "xts(aes)", | |
| .cra_driver_name = "xts-aes-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = AES_BLOCK_SIZE, | |
| .cra_ctxsize = sizeof(struct async_helper_ctx), | |
| .cra_alignmask = 0, | |
| .cra_type = &crypto_ablkcipher_type, | |
| .cra_module = THIS_MODULE, | |
| .cra_init = ablk_init, | |
| .cra_exit = ablk_exit, | |
| .cra_u = { | |
| .ablkcipher = { | |
| .min_keysize = 2 * AES_MIN_KEY_SIZE, | |
| .max_keysize = 2 * AES_MAX_KEY_SIZE, | |
| .ivsize = AES_BLOCK_SIZE, | |
| .setkey = ablk_set_key, | |
| .encrypt = ablk_encrypt, | |
| .decrypt = ablk_decrypt, | |
| }, | |
| }, | |
| } }; | |
| #ifdef CONFIG_X86_64 | |
| static struct aead_alg aesni_aead_algs[] = { { | |
| .setkey = common_rfc4106_set_key, | |
| .setauthsize = common_rfc4106_set_authsize, | |
| .encrypt = helper_rfc4106_encrypt, | |
| .decrypt = helper_rfc4106_decrypt, | |
| .ivsize = 8, | |
| .maxauthsize = 16, | |
| .base = { | |
| .cra_name = "__gcm-aes-aesni", | |
| .cra_driver_name = "__driver-gcm-aes-aesni", | |
| .cra_flags = CRYPTO_ALG_INTERNAL, | |
| .cra_blocksize = 1, | |
| .cra_ctxsize = sizeof(struct aesni_rfc4106_gcm_ctx), | |
| .cra_alignmask = AESNI_ALIGN - 1, | |
| .cra_module = THIS_MODULE, | |
| }, | |
| }, { | |
| .init = rfc4106_init, | |
| .exit = rfc4106_exit, | |
| .setkey = rfc4106_set_key, | |
| .setauthsize = rfc4106_set_authsize, | |
| .encrypt = rfc4106_encrypt, | |
| .decrypt = rfc4106_decrypt, | |
| .ivsize = 8, | |
| .maxauthsize = 16, | |
| .base = { | |
| .cra_name = "rfc4106(gcm(aes))", | |
| .cra_driver_name = "rfc4106-gcm-aesni", | |
| .cra_priority = 400, | |
| .cra_flags = CRYPTO_ALG_ASYNC, | |
| .cra_blocksize = 1, | |
| .cra_ctxsize = sizeof(struct cryptd_aead *), | |
| .cra_module = THIS_MODULE, | |
| }, | |
| } }; | |
| #else | |
| static struct aead_alg aesni_aead_algs[0]; | |
| #endif | |
| static const struct x86_cpu_id aesni_cpu_id[] = { | |
| X86_FEATURE_MATCH(X86_FEATURE_AES), | |
| {} | |
| }; | |
| MODULE_DEVICE_TABLE(x86cpu, aesni_cpu_id); | |
| static int __init aesni_init(void) | |
| { | |
| int err; | |
| if (!x86_match_cpu(aesni_cpu_id)) | |
| return -ENODEV; | |
| #ifdef CONFIG_X86_64 | |
| #ifdef CONFIG_AS_AVX2 | |
| if (boot_cpu_has(X86_FEATURE_AVX2)) { | |
| pr_info("AVX2 version of gcm_enc/dec engaged.\n"); | |
| aesni_gcm_enc_tfm = aesni_gcm_enc_avx2; | |
| aesni_gcm_dec_tfm = aesni_gcm_dec_avx2; | |
| } else | |
| #endif | |
| #ifdef CONFIG_AS_AVX | |
| if (boot_cpu_has(X86_FEATURE_AVX)) { | |
| pr_info("AVX version of gcm_enc/dec engaged.\n"); | |
| aesni_gcm_enc_tfm = aesni_gcm_enc_avx; | |
| aesni_gcm_dec_tfm = aesni_gcm_dec_avx; | |
| } else | |
| #endif | |
| { | |
| pr_info("SSE version of gcm_enc/dec engaged.\n"); | |
| aesni_gcm_enc_tfm = aesni_gcm_enc; | |
| aesni_gcm_dec_tfm = aesni_gcm_dec; | |
| } | |
| aesni_ctr_enc_tfm = aesni_ctr_enc; | |
| #ifdef CONFIG_AS_AVX | |
| if (boot_cpu_has(X86_FEATURE_AVX)) { | |
| /* optimize performance of ctr mode encryption transform */ | |
| aesni_ctr_enc_tfm = aesni_ctr_enc_avx_tfm; | |
| pr_info("AES CTR mode by8 optimization enabled\n"); | |
| } | |
| #endif | |
| #endif | |
| err = crypto_fpu_init(); | |
| if (err) | |
| return err; | |
| err = crypto_register_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); | |
| if (err) | |
| goto fpu_exit; | |
| err = crypto_register_aeads(aesni_aead_algs, | |
| ARRAY_SIZE(aesni_aead_algs)); | |
| if (err) | |
| goto unregister_algs; | |
| return err; | |
| unregister_algs: | |
| crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); | |
| fpu_exit: | |
| crypto_fpu_exit(); | |
| return err; | |
| } | |
| static void __exit aesni_exit(void) | |
| { | |
| crypto_unregister_aeads(aesni_aead_algs, ARRAY_SIZE(aesni_aead_algs)); | |
| crypto_unregister_algs(aesni_algs, ARRAY_SIZE(aesni_algs)); | |
| crypto_fpu_exit(); | |
| } | |
| late_initcall(aesni_init); | |
| module_exit(aesni_exit); | |
| MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm, Intel AES-NI instructions optimized"); | |
| MODULE_LICENSE("GPL"); | |
| MODULE_ALIAS_CRYPTO("aes"); |