diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.14/022-0002-crypto-crypto4xx-performance-optimizations.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.14/022-0002-crypto-crypto4xx-performance-optimizations.patch | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/target/linux/apm821xx/patches-4.14/022-0002-crypto-crypto4xx-performance-optimizations.patch b/target/linux/apm821xx/patches-4.14/022-0002-crypto-crypto4xx-performance-optimizations.patch new file mode 100644 index 0000000000..f1035be52f --- /dev/null +++ b/target/linux/apm821xx/patches-4.14/022-0002-crypto-crypto4xx-performance-optimizations.patch @@ -0,0 +1,159 @@ +From a8d79d7bfb14f471914017103ee2329a74e5e89d Mon Sep 17 00:00:00 2001 +From: Christian Lamparter <chunkeey@gmail.com> +Date: Thu, 19 Apr 2018 18:41:51 +0200 +Subject: crypto: crypto4xx - performance optimizations + +This patch provides a cheap 2MiB/s+ (~ 6%) performance +improvement over the current code. This is because the +compiler can now optimize several endian swap memcpy. + +Signed-off-by: Christian Lamparter <chunkeey@gmail.com> +Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> +--- + drivers/crypto/amcc/crypto4xx_alg.c | 32 +++++++++++++++++++------------- + drivers/crypto/amcc/crypto4xx_core.c | 22 +++++++++++----------- + drivers/crypto/amcc/crypto4xx_core.h | 6 ++++-- + 3 files changed, 34 insertions(+), 26 deletions(-) + +--- a/drivers/crypto/amcc/crypto4xx_alg.c ++++ b/drivers/crypto/amcc/crypto4xx_alg.c +@@ -74,32 +74,38 @@ static void set_dynamic_sa_command_1(str + sa->sa_command_1.bf.copy_hdr = cp_hdr; + } + +-int crypto4xx_encrypt(struct ablkcipher_request *req) ++static inline int crypto4xx_crypt(struct ablkcipher_request *req, ++ const unsigned int ivlen, bool decrypt) + { + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); +- unsigned int ivlen = crypto_ablkcipher_ivsize( +- crypto_ablkcipher_reqtfm(req)); + __le32 iv[ivlen]; + + if (ivlen) + crypto4xx_memcpy_to_le32(iv, req->info, ivlen); + + return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst, +- req->nbytes, iv, ivlen, ctx->sa_out, ctx->sa_len, 0); ++ req->nbytes, iv, ivlen, decrypt ? ctx->sa_in : ctx->sa_out, ++ ctx->sa_len, 0); + } + +-int crypto4xx_decrypt(struct ablkcipher_request *req) ++int crypto4xx_encrypt_noiv(struct ablkcipher_request *req) + { +- struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); +- unsigned int ivlen = crypto_ablkcipher_ivsize( +- crypto_ablkcipher_reqtfm(req)); +- __le32 iv[ivlen]; ++ return crypto4xx_crypt(req, 0, false); ++} + +- if (ivlen) +- crypto4xx_memcpy_to_le32(iv, req->info, ivlen); ++int crypto4xx_encrypt_iv(struct ablkcipher_request *req) ++{ ++ return crypto4xx_crypt(req, AES_IV_SIZE, false); ++} + +- return crypto4xx_build_pd(&req->base, ctx, req->src, req->dst, +- req->nbytes, iv, ivlen, ctx->sa_in, ctx->sa_len, 0); ++int crypto4xx_decrypt_noiv(struct ablkcipher_request *req) ++{ ++ return crypto4xx_crypt(req, 0, true); ++} ++ ++int crypto4xx_decrypt_iv(struct ablkcipher_request *req) ++{ ++ return crypto4xx_crypt(req, AES_IV_SIZE, true); + } + + /** +--- a/drivers/crypto/amcc/crypto4xx_core.c ++++ b/drivers/crypto/amcc/crypto4xx_core.c +@@ -580,7 +580,7 @@ static void crypto4xx_aead_done(struct c + struct scatterlist *dst = pd_uinfo->dest_va; + size_t cp_len = crypto_aead_authsize( + crypto_aead_reqtfm(aead_req)); +- u32 icv[cp_len]; ++ u32 icv[AES_BLOCK_SIZE]; + int err = 0; + + if (pd_uinfo->using_sd) { +@@ -595,7 +595,7 @@ static void crypto4xx_aead_done(struct c + if (pd_uinfo->sa_va->sa_command_0.bf.dir == DIR_OUTBOUND) { + /* append icv at the end */ + crypto4xx_memcpy_from_le32(icv, pd_uinfo->sr_va->save_digest, +- cp_len); ++ sizeof(icv)); + + scatterwalk_map_and_copy(icv, dst, aead_req->cryptlen, + cp_len, 1); +@@ -605,7 +605,7 @@ static void crypto4xx_aead_done(struct c + aead_req->assoclen + aead_req->cryptlen - + cp_len, cp_len, 0); + +- crypto4xx_memcpy_from_le32(icv, icv, cp_len); ++ crypto4xx_memcpy_from_le32(icv, icv, sizeof(icv)); + + if (crypto_memneq(icv, pd_uinfo->sr_va->save_digest, cp_len)) + err = -EBADMSG; +@@ -1122,8 +1122,8 @@ static struct crypto4xx_alg_common crypt + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_IV_SIZE, + .setkey = crypto4xx_setkey_aes_cbc, +- .encrypt = crypto4xx_encrypt, +- .decrypt = crypto4xx_decrypt, ++ .encrypt = crypto4xx_encrypt_iv, ++ .decrypt = crypto4xx_decrypt_iv, + } + } + }}, +@@ -1146,8 +1146,8 @@ static struct crypto4xx_alg_common crypt + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_IV_SIZE, + .setkey = crypto4xx_setkey_aes_cfb, +- .encrypt = crypto4xx_encrypt, +- .decrypt = crypto4xx_decrypt, ++ .encrypt = crypto4xx_encrypt_iv, ++ .decrypt = crypto4xx_decrypt_iv, + } + } + } }, +@@ -1195,8 +1195,8 @@ static struct crypto4xx_alg_common crypt + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .setkey = crypto4xx_setkey_aes_ecb, +- .encrypt = crypto4xx_encrypt, +- .decrypt = crypto4xx_decrypt, ++ .encrypt = crypto4xx_encrypt_noiv, ++ .decrypt = crypto4xx_decrypt_noiv, + } + } + } }, +@@ -1219,8 +1219,8 @@ static struct crypto4xx_alg_common crypt + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_IV_SIZE, + .setkey = crypto4xx_setkey_aes_ofb, +- .encrypt = crypto4xx_encrypt, +- .decrypt = crypto4xx_decrypt, ++ .encrypt = crypto4xx_encrypt_iv, ++ .decrypt = crypto4xx_decrypt_iv, + } + } + } }, +--- a/drivers/crypto/amcc/crypto4xx_core.h ++++ b/drivers/crypto/amcc/crypto4xx_core.h +@@ -168,8 +168,10 @@ int crypto4xx_setkey_aes_ofb(struct cryp + const u8 *key, unsigned int keylen); + int crypto4xx_setkey_rfc3686(struct crypto_ablkcipher *cipher, + const u8 *key, unsigned int keylen); +-int crypto4xx_encrypt(struct ablkcipher_request *req); +-int crypto4xx_decrypt(struct ablkcipher_request *req); ++int crypto4xx_encrypt_iv(struct ablkcipher_request *req); ++int crypto4xx_decrypt_iv(struct ablkcipher_request *req); ++int crypto4xx_encrypt_noiv(struct ablkcipher_request *req); ++int crypto4xx_decrypt_noiv(struct ablkcipher_request *req); + int crypto4xx_rfc3686_encrypt(struct ablkcipher_request *req); + int crypto4xx_rfc3686_decrypt(struct ablkcipher_request *req); + int crypto4xx_sha1_alg_init(struct crypto_tfm *tfm); |