1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * Glue Code for x86_64/AVX2/AES-NI assembler optimized version of Camellia 4 * 5 * Copyright © 2013 Jussi Kivilinna <jussi.kivilinna@mbnet.fi> 6 */ 7 8 #include <asm/crypto/camellia.h> 9 #include <asm/crypto/glue_helper.h> 10 #include <crypto/algapi.h> 11 #include <crypto/internal/simd.h> 12 #include <linux/crypto.h> 13 #include <linux/err.h> 14 #include <linux/module.h> 15 #include <linux/types.h> 16 17 #define CAMELLIA_AESNI_PARALLEL_BLOCKS 16 18 #define CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS 32 19 20 /* 32-way AVX2/AES-NI parallel cipher functions */ 21 asmlinkage void camellia_ecb_enc_32way(const void *ctx, u8 *dst, const u8 *src); 22 asmlinkage void camellia_ecb_dec_32way(const void *ctx, u8 *dst, const u8 *src); 23 24 asmlinkage void camellia_cbc_dec_32way(const void *ctx, u8 *dst, const u8 *src); 25 asmlinkage void camellia_ctr_32way(const void *ctx, u8 *dst, const u8 *src, 26 le128 *iv); 27 28 static const struct common_glue_ctx camellia_enc = { 29 .num_funcs = 4, 30 .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS, 31 32 .funcs = { { 33 .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, 34 .fn_u = { .ecb = camellia_ecb_enc_32way } 35 }, { 36 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS, 37 .fn_u = { .ecb = camellia_ecb_enc_16way } 38 }, { 39 .num_blocks = 2, 40 .fn_u = { .ecb = camellia_enc_blk_2way } 41 }, { 42 .num_blocks = 1, 43 .fn_u = { .ecb = camellia_enc_blk } 44 } } 45 }; 46 47 static const struct common_glue_ctx camellia_ctr = { 48 .num_funcs = 4, 49 .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS, 50 51 .funcs = { { 52 .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, 53 .fn_u = { .ctr = camellia_ctr_32way } 54 }, { 55 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS, 56 .fn_u = { .ctr = camellia_ctr_16way } 57 }, { 58 .num_blocks = 2, 59 .fn_u = { .ctr = camellia_crypt_ctr_2way } 60 }, { 61 .num_blocks = 1, 62 .fn_u = { .ctr = camellia_crypt_ctr } 63 } } 64 }; 65 66 static const struct common_glue_ctx camellia_dec = { 67 .num_funcs = 4, 68 .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS, 69 70 .funcs = { { 71 .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, 72 .fn_u = { .ecb = camellia_ecb_dec_32way } 73 }, { 74 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS, 75 .fn_u = { .ecb = camellia_ecb_dec_16way } 76 }, { 77 .num_blocks = 2, 78 .fn_u = { .ecb = camellia_dec_blk_2way } 79 }, { 80 .num_blocks = 1, 81 .fn_u = { .ecb = camellia_dec_blk } 82 } } 83 }; 84 85 static const struct common_glue_ctx camellia_dec_cbc = { 86 .num_funcs = 4, 87 .fpu_blocks_limit = CAMELLIA_AESNI_PARALLEL_BLOCKS, 88 89 .funcs = { { 90 .num_blocks = CAMELLIA_AESNI_AVX2_PARALLEL_BLOCKS, 91 .fn_u = { .cbc = camellia_cbc_dec_32way } 92 }, { 93 .num_blocks = CAMELLIA_AESNI_PARALLEL_BLOCKS, 94 .fn_u = { .cbc = camellia_cbc_dec_16way } 95 }, { 96 .num_blocks = 2, 97 .fn_u = { .cbc = camellia_decrypt_cbc_2way } 98 }, { 99 .num_blocks = 1, 100 .fn_u = { .cbc = camellia_dec_blk } 101 } } 102 }; 103 104 static int camellia_setkey(struct crypto_skcipher *tfm, const u8 *key, 105 unsigned int keylen) 106 { 107 return __camellia_setkey(crypto_skcipher_ctx(tfm), key, keylen); 108 } 109 110 static int ecb_encrypt(struct skcipher_request *req) 111 { 112 return glue_ecb_req_128bit(&camellia_enc, req); 113 } 114 115 static int ecb_decrypt(struct skcipher_request *req) 116 { 117 return glue_ecb_req_128bit(&camellia_dec, req); 118 } 119 120 static int cbc_encrypt(struct skcipher_request *req) 121 { 122 return glue_cbc_encrypt_req_128bit(camellia_enc_blk, req); 123 } 124 125 static int cbc_decrypt(struct skcipher_request *req) 126 { 127 return glue_cbc_decrypt_req_128bit(&camellia_dec_cbc, req); 128 } 129 130 static int ctr_crypt(struct skcipher_request *req) 131 { 132 return glue_ctr_req_128bit(&camellia_ctr, req); 133 } 134 135 static struct skcipher_alg camellia_algs[] = { 136 { 137 .base.cra_name = "__ecb(camellia)", 138 .base.cra_driver_name = "__ecb-camellia-aesni-avx2", 139 .base.cra_priority = 500, 140 .base.cra_flags = CRYPTO_ALG_INTERNAL, 141 .base.cra_blocksize = CAMELLIA_BLOCK_SIZE, 142 .base.cra_ctxsize = sizeof(struct camellia_ctx), 143 .base.cra_module = THIS_MODULE, 144 .min_keysize = CAMELLIA_MIN_KEY_SIZE, 145 .max_keysize = CAMELLIA_MAX_KEY_SIZE, 146 .setkey = camellia_setkey, 147 .encrypt = ecb_encrypt, 148 .decrypt = ecb_decrypt, 149 }, { 150 .base.cra_name = "__cbc(camellia)", 151 .base.cra_driver_name = "__cbc-camellia-aesni-avx2", 152 .base.cra_priority = 500, 153 .base.cra_flags = CRYPTO_ALG_INTERNAL, 154 .base.cra_blocksize = CAMELLIA_BLOCK_SIZE, 155 .base.cra_ctxsize = sizeof(struct camellia_ctx), 156 .base.cra_module = THIS_MODULE, 157 .min_keysize = CAMELLIA_MIN_KEY_SIZE, 158 .max_keysize = CAMELLIA_MAX_KEY_SIZE, 159 .ivsize = CAMELLIA_BLOCK_SIZE, 160 .setkey = camellia_setkey, 161 .encrypt = cbc_encrypt, 162 .decrypt = cbc_decrypt, 163 }, { 164 .base.cra_name = "__ctr(camellia)", 165 .base.cra_driver_name = "__ctr-camellia-aesni-avx2", 166 .base.cra_priority = 500, 167 .base.cra_flags = CRYPTO_ALG_INTERNAL, 168 .base.cra_blocksize = 1, 169 .base.cra_ctxsize = sizeof(struct camellia_ctx), 170 .base.cra_module = THIS_MODULE, 171 .min_keysize = CAMELLIA_MIN_KEY_SIZE, 172 .max_keysize = CAMELLIA_MAX_KEY_SIZE, 173 .ivsize = CAMELLIA_BLOCK_SIZE, 174 .chunksize = CAMELLIA_BLOCK_SIZE, 175 .setkey = camellia_setkey, 176 .encrypt = ctr_crypt, 177 .decrypt = ctr_crypt, 178 }, 179 }; 180 181 static struct simd_skcipher_alg *camellia_simd_algs[ARRAY_SIZE(camellia_algs)]; 182 183 static int __init camellia_aesni_init(void) 184 { 185 const char *feature_name; 186 187 if (!boot_cpu_has(X86_FEATURE_AVX) || 188 !boot_cpu_has(X86_FEATURE_AVX2) || 189 !boot_cpu_has(X86_FEATURE_AES) || 190 !boot_cpu_has(X86_FEATURE_OSXSAVE)) { 191 pr_info("AVX2 or AES-NI instructions are not detected.\n"); 192 return -ENODEV; 193 } 194 195 if (!cpu_has_xfeatures(XFEATURE_MASK_SSE | XFEATURE_MASK_YMM, 196 &feature_name)) { 197 pr_info("CPU feature '%s' is not supported.\n", feature_name); 198 return -ENODEV; 199 } 200 201 return simd_register_skciphers_compat(camellia_algs, 202 ARRAY_SIZE(camellia_algs), 203 camellia_simd_algs); 204 } 205 206 static void __exit camellia_aesni_fini(void) 207 { 208 simd_unregister_skciphers(camellia_algs, ARRAY_SIZE(camellia_algs), 209 camellia_simd_algs); 210 } 211 212 module_init(camellia_aesni_init); 213 module_exit(camellia_aesni_fini); 214 215 MODULE_LICENSE("GPL"); 216 MODULE_DESCRIPTION("Camellia Cipher Algorithm, AES-NI/AVX2 optimized"); 217 MODULE_ALIAS_CRYPTO("camellia"); 218 MODULE_ALIAS_CRYPTO("camellia-asm"); 219