Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Bit sliced AES using NEON instructions
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  * Copyright (C) 2016 - 2017 Linaro Ltd <ard.biesheuvel@linaro.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) #include <asm/neon.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <asm/simd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <crypto/aes.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <crypto/ctr.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <crypto/internal/simd.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) #include <crypto/internal/skcipher.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) #include <crypto/scatterwalk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) #include <crypto/xts.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) MODULE_AUTHOR("Ard Biesheuvel <ard.biesheuvel@linaro.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) MODULE_ALIAS_CRYPTO("ecb(aes)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) MODULE_ALIAS_CRYPTO("cbc(aes)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) MODULE_ALIAS_CRYPTO("ctr(aes)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) MODULE_ALIAS_CRYPTO("xts(aes)");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) asmlinkage void aesbs_convert_key(u8 out[], u32 const rk[], int rounds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) asmlinkage void aesbs_ecb_encrypt(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 				  int rounds, int blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) asmlinkage void aesbs_ecb_decrypt(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 				  int rounds, int blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) asmlinkage void aesbs_cbc_decrypt(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 				  int rounds, int blocks, u8 iv[]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) asmlinkage void aesbs_ctr_encrypt(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 				  int rounds, int blocks, u8 iv[], u8 final[]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) asmlinkage void aesbs_xts_encrypt(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 				  int rounds, int blocks, u8 iv[]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) asmlinkage void aesbs_xts_decrypt(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) 				  int rounds, int blocks, u8 iv[]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) /* borrowed from aes-neon-blk.ko */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) asmlinkage void neon_aes_ecb_encrypt(u8 out[], u8 const in[], u32 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 				     int rounds, int blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) asmlinkage void neon_aes_cbc_encrypt(u8 out[], u8 const in[], u32 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 				     int rounds, int blocks, u8 iv[]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) asmlinkage void neon_aes_xts_encrypt(u8 out[], u8 const in[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 				     u32 const rk1[], int rounds, int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 				     u32 const rk2[], u8 iv[], int first);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) asmlinkage void neon_aes_xts_decrypt(u8 out[], u8 const in[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 				     u32 const rk1[], int rounds, int bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) 				     u32 const rk2[], u8 iv[], int first);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) struct aesbs_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	u8	rk[13 * (8 * AES_BLOCK_SIZE) + 32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 	int	rounds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) } __aligned(AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) struct aesbs_cbc_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 	struct aesbs_ctx	key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 	u32			enc[AES_MAX_KEYLENGTH_U32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) struct aesbs_xts_ctx {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) 	struct aesbs_ctx	key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	u32			twkey[AES_MAX_KEYLENGTH_U32];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) 	struct crypto_aes_ctx	cts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) static int aesbs_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) 			unsigned int key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	struct aesbs_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	struct crypto_aes_ctx rk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 	err = aes_expandkey(&rk, in_key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 	ctx->rounds = 6 + key_len / 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 	kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	aesbs_convert_key(ctx->rk, rk.key_enc, ctx->rounds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) static int __ecb_crypt(struct skcipher_request *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 		       void (*fn)(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 				  int rounds, int blocks))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	struct aesbs_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	while (walk.nbytes >= AES_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 		unsigned int blocks = walk.nbytes / AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		if (walk.nbytes < walk.total)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			blocks = round_down(blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 					    walk.stride / AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 		kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 		fn(walk.dst.virt.addr, walk.src.virt.addr, ctx->rk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 		   ctx->rounds, blocks);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 		kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 		err = skcipher_walk_done(&walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 					 walk.nbytes - blocks * AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) static int ecb_encrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) 	return __ecb_crypt(req, aesbs_ecb_encrypt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static int ecb_decrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	return __ecb_crypt(req, aesbs_ecb_decrypt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static int aesbs_cbc_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 			    unsigned int key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	struct aesbs_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	struct crypto_aes_ctx rk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 	err = aes_expandkey(&rk, in_key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 	ctx->key.rounds = 6 + key_len / 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 	memcpy(ctx->enc, rk.key_enc, sizeof(ctx->enc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 	kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 	aesbs_convert_key(ctx->key.rk, rk.key_enc, ctx->key.rounds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 	kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 	memzero_explicit(&rk, sizeof(rk));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) static int cbc_encrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 	struct aesbs_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	while (walk.nbytes >= AES_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		unsigned int blocks = walk.nbytes / AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 		/* fall back to the non-bitsliced NEON implementation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 		kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		neon_aes_cbc_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 				     ctx->enc, ctx->key.rounds, blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 				     walk.iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 		kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 		err = skcipher_walk_done(&walk, walk.nbytes % AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) static int cbc_decrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 	struct aesbs_cbc_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 	while (walk.nbytes >= AES_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 		unsigned int blocks = walk.nbytes / AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 		if (walk.nbytes < walk.total)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 			blocks = round_down(blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 					    walk.stride / AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 		kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 		aesbs_cbc_decrypt(walk.dst.virt.addr, walk.src.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 				  ctx->key.rk, ctx->key.rounds, blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 				  walk.iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 		kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 		err = skcipher_walk_done(&walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 					 walk.nbytes - blocks * AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) static int ctr_encrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 	struct aesbs_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	u8 buf[AES_BLOCK_SIZE];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	while (walk.nbytes > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 		unsigned int blocks = walk.nbytes / AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 		u8 *final = (walk.total % AES_BLOCK_SIZE) ? buf : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 		if (walk.nbytes < walk.total) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) 			blocks = round_down(blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) 					    walk.stride / AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 			final = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 		kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 		aesbs_ctr_encrypt(walk.dst.virt.addr, walk.src.virt.addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 				  ctx->rk, ctx->rounds, blocks, walk.iv, final);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 		kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		if (final) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 			u8 *dst = walk.dst.virt.addr + blocks * AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 			u8 *src = walk.src.virt.addr + blocks * AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 			crypto_xor_cpy(dst, src, final,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) 				       walk.total % AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 			err = skcipher_walk_done(&walk, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) 			break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) 		err = skcipher_walk_done(&walk,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 					 walk.nbytes - blocks * AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static int aesbs_xts_setkey(struct crypto_skcipher *tfm, const u8 *in_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 			    unsigned int key_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) 	struct aesbs_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 	struct crypto_aes_ctx rk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) 	int err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) 	err = xts_verify_key(tfm, in_key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) 	key_len /= 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) 	err = aes_expandkey(&ctx->cts, in_key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) 	err = aes_expandkey(&rk, in_key + key_len, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) 	memcpy(ctx->twkey, rk.key_enc, sizeof(ctx->twkey));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) 	return aesbs_setkey(tfm, in_key, key_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) static int __xts_crypt(struct skcipher_request *req, bool encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) 		       void (*fn)(u8 out[], u8 const in[], u8 const rk[],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) 				  int rounds, int blocks, u8 iv[]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) 	struct aesbs_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) 	int tail = req->cryptlen % (8 * AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) 	struct scatterlist sg_src[2], sg_dst[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) 	struct skcipher_request subreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) 	struct scatterlist *src, *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) 	struct skcipher_walk walk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) 	int nbytes, err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) 	int first = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) 	u8 *out, *in;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) 	if (req->cryptlen < AES_BLOCK_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) 	/* ensure that the cts tail is covered by a single step */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) 	if (unlikely(tail > 0 && tail < AES_BLOCK_SIZE)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) 		int xts_blocks = DIV_ROUND_UP(req->cryptlen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) 					      AES_BLOCK_SIZE) - 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) 		skcipher_request_set_tfm(&subreq, tfm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) 		skcipher_request_set_callback(&subreq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) 					      skcipher_request_flags(req),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) 					      NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) 		skcipher_request_set_crypt(&subreq, req->src, req->dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) 					   xts_blocks * AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) 					   req->iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) 		req = &subreq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) 		tail = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) 	while (walk.nbytes >= AES_BLOCK_SIZE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) 		unsigned int blocks = walk.nbytes / AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) 		if (walk.nbytes < walk.total || walk.nbytes % AES_BLOCK_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) 			blocks = round_down(blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) 					    walk.stride / AES_BLOCK_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) 		out = walk.dst.virt.addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) 		in = walk.src.virt.addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) 		nbytes = walk.nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) 		kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) 		if (likely(blocks > 6)) { /* plain NEON is faster otherwise */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) 			if (first)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) 				neon_aes_ecb_encrypt(walk.iv, walk.iv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) 						     ctx->twkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) 						     ctx->key.rounds, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) 			first = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) 			fn(out, in, ctx->key.rk, ctx->key.rounds, blocks,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) 			   walk.iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) 			out += blocks * AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) 			in += blocks * AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) 			nbytes -= blocks * AES_BLOCK_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) 		if (walk.nbytes == walk.total && nbytes > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) 			goto xts_tail;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) 		kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) 		err = skcipher_walk_done(&walk, nbytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) 	if (err || likely(!tail))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) 	/* handle ciphertext stealing */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) 	dst = src = scatterwalk_ffwd(sg_src, req->src, req->cryptlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) 	if (req->dst != req->src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) 		dst = scatterwalk_ffwd(sg_dst, req->dst, req->cryptlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) 	skcipher_request_set_crypt(req, src, dst, AES_BLOCK_SIZE + tail,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) 				   req->iv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) 	err = skcipher_walk_virt(&walk, req, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) 	if (err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) 		return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) 	out = walk.dst.virt.addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) 	in = walk.src.virt.addr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) 	nbytes = walk.nbytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) 	kernel_neon_begin();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) xts_tail:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) 	if (encrypt)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) 		neon_aes_xts_encrypt(out, in, ctx->cts.key_enc, ctx->key.rounds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) 				     nbytes, ctx->twkey, walk.iv, first ?: 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) 		neon_aes_xts_decrypt(out, in, ctx->cts.key_dec, ctx->key.rounds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) 				     nbytes, ctx->twkey, walk.iv, first ?: 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) 	kernel_neon_end();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) 	return skcipher_walk_done(&walk, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static int xts_encrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) 	return __xts_crypt(req, true, aesbs_xts_encrypt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) static int xts_decrypt(struct skcipher_request *req)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) 	return __xts_crypt(req, false, aesbs_xts_decrypt);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) static struct skcipher_alg aes_algs[] = { {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) 	.base.cra_name		= "ecb(aes)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) 	.base.cra_driver_name	= "ecb-aes-neonbs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) 	.base.cra_priority	= 250,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) 	.base.cra_blocksize	= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) 	.base.cra_ctxsize	= sizeof(struct aesbs_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) 	.base.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) 	.min_keysize		= AES_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) 	.max_keysize		= AES_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) 	.walksize		= 8 * AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) 	.setkey			= aesbs_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) 	.encrypt		= ecb_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) 	.decrypt		= ecb_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) 	.base.cra_name		= "cbc(aes)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) 	.base.cra_driver_name	= "cbc-aes-neonbs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) 	.base.cra_priority	= 250,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) 	.base.cra_blocksize	= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) 	.base.cra_ctxsize	= sizeof(struct aesbs_cbc_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) 	.base.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) 	.min_keysize		= AES_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) 	.max_keysize		= AES_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) 	.walksize		= 8 * AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) 	.ivsize			= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) 	.setkey			= aesbs_cbc_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) 	.encrypt		= cbc_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) 	.decrypt		= cbc_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) 	.base.cra_name		= "ctr(aes)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) 	.base.cra_driver_name	= "ctr-aes-neonbs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) 	.base.cra_priority	= 250,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) 	.base.cra_blocksize	= 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) 	.base.cra_ctxsize	= sizeof(struct aesbs_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) 	.base.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) 	.min_keysize		= AES_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) 	.max_keysize		= AES_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) 	.chunksize		= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) 	.walksize		= 8 * AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) 	.ivsize			= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) 	.setkey			= aesbs_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) 	.encrypt		= ctr_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) 	.decrypt		= ctr_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }, {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) 	.base.cra_name		= "xts(aes)",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) 	.base.cra_driver_name	= "xts-aes-neonbs",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) 	.base.cra_priority	= 250,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) 	.base.cra_blocksize	= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) 	.base.cra_ctxsize	= sizeof(struct aesbs_xts_ctx),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) 	.base.cra_module	= THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) 	.min_keysize		= 2 * AES_MIN_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) 	.max_keysize		= 2 * AES_MAX_KEY_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) 	.walksize		= 8 * AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) 	.ivsize			= AES_BLOCK_SIZE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) 	.setkey			= aesbs_xts_setkey,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) 	.encrypt		= xts_encrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) 	.decrypt		= xts_decrypt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) } };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) static void aes_exit(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) 	crypto_unregister_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) static int __init aes_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) 	if (!cpu_have_named_feature(ASIMD))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) 	return crypto_register_skciphers(aes_algs, ARRAY_SIZE(aes_algs));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) module_init(aes_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) module_exit(aes_exit);