diff options
Diffstat (limited to 'target/linux/apm821xx/patches-4.14/020-0022-crypto-crypto4xx-simplify-sa-and-state-context-acqui.patch')
| -rw-r--r-- | target/linux/apm821xx/patches-4.14/020-0022-crypto-crypto4xx-simplify-sa-and-state-context-acqui.patch | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/target/linux/apm821xx/patches-4.14/020-0022-crypto-crypto4xx-simplify-sa-and-state-context-acqui.patch b/target/linux/apm821xx/patches-4.14/020-0022-crypto-crypto4xx-simplify-sa-and-state-context-acqui.patch new file mode 100644 index 0000000000..06ab798f5b --- /dev/null +++ b/target/linux/apm821xx/patches-4.14/020-0022-crypto-crypto4xx-simplify-sa-and-state-context-acqui.patch @@ -0,0 +1,209 @@ +From 2f77690dcb96e525bc6b57bce4a0eaecaa2878d1 Mon Sep 17 00:00:00 2001 +From: Christian Lamparter <chunkeey@gmail.com> +Date: Wed, 4 Oct 2017 01:00:14 +0200 +Subject: [PATCH 22/25] crypto: crypto4xx - simplify sa and state context + acquisition + +Thanks to the big overhaul of crypto4xx_build_pd(), the request-local +sa_in, sa_out and state_record allocation can be simplified. + +There's no need to setup any dma coherent memory anymore and +much of the support code can be removed. + +Signed-off-by: Christian Lamparter <chunkeey@gmail.com> +Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> +--- + drivers/crypto/amcc/crypto4xx_alg.c | 27 +++++-------------- + drivers/crypto/amcc/crypto4xx_core.c | 50 ++++++------------------------------ + drivers/crypto/amcc/crypto4xx_core.h | 6 +---- + 3 files changed, 15 insertions(+), 68 deletions(-) + +--- a/drivers/crypto/amcc/crypto4xx_alg.c ++++ b/drivers/crypto/amcc/crypto4xx_alg.c +@@ -122,20 +122,13 @@ static int crypto4xx_setkey_aes(struct c + } + + /* Create SA */ +- if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr) ++ if (ctx->sa_in || ctx->sa_out) + crypto4xx_free_sa(ctx); + + rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4); + if (rc) + return rc; + +- if (ctx->state_record_dma_addr == 0) { +- rc = crypto4xx_alloc_state_record(ctx); +- if (rc) { +- crypto4xx_free_sa(ctx); +- return rc; +- } +- } + /* Setup SA */ + sa = ctx->sa_in; + +@@ -203,8 +196,8 @@ int crypto4xx_setkey_rfc3686(struct cryp + if (rc) + return rc; + +- crypto4xx_memcpy_to_le32(ctx->state_record->save_iv, +- key + keylen - CTR_RFC3686_NONCE_SIZE, CTR_RFC3686_NONCE_SIZE); ++ ctx->iv_nonce = cpu_to_le32p((u32 *)&key[keylen - ++ CTR_RFC3686_NONCE_SIZE]); + + return 0; + } +@@ -213,7 +206,7 @@ int crypto4xx_rfc3686_encrypt(struct abl + { + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); + __le32 iv[AES_IV_SIZE / 4] = { +- ctx->state_record->save_iv[0], ++ ctx->iv_nonce, + cpu_to_le32p((u32 *) req->info), + cpu_to_le32p((u32 *) (req->info + 4)), + cpu_to_le32(1) }; +@@ -227,7 +220,7 @@ int crypto4xx_rfc3686_decrypt(struct abl + { + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm); + __le32 iv[AES_IV_SIZE / 4] = { +- ctx->state_record->save_iv[0], ++ ctx->iv_nonce, + cpu_to_le32p((u32 *) req->info), + cpu_to_le32p((u32 *) (req->info + 4)), + cpu_to_le32(1) }; +@@ -254,21 +247,13 @@ static int crypto4xx_hash_alg_init(struc + ctx->dev = my_alg->dev; + + /* Create SA */ +- if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr) ++ if (ctx->sa_in || ctx->sa_out) + crypto4xx_free_sa(ctx); + + rc = crypto4xx_alloc_sa(ctx, sa_len); + if (rc) + return rc; + +- if (ctx->state_record_dma_addr == 0) { +- crypto4xx_alloc_state_record(ctx); +- if (!ctx->state_record_dma_addr) { +- crypto4xx_free_sa(ctx); +- return -ENOMEM; +- } +- } +- + crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), + sizeof(struct crypto4xx_ctx)); + sa = (struct dynamic_sa_hash160 *)ctx->sa_in; +--- a/drivers/crypto/amcc/crypto4xx_core.c ++++ b/drivers/crypto/amcc/crypto4xx_core.c +@@ -130,21 +130,17 @@ static void crypto4xx_hw_init(struct cry + + int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size) + { +- ctx->sa_in = dma_alloc_coherent(ctx->dev->core_dev->device, size * 4, +- &ctx->sa_in_dma_addr, GFP_ATOMIC); ++ ctx->sa_in = kzalloc(size * 4, GFP_ATOMIC); + if (ctx->sa_in == NULL) + return -ENOMEM; + +- ctx->sa_out = dma_alloc_coherent(ctx->dev->core_dev->device, size * 4, +- &ctx->sa_out_dma_addr, GFP_ATOMIC); ++ ctx->sa_out = kzalloc(size * 4, GFP_ATOMIC); + if (ctx->sa_out == NULL) { +- dma_free_coherent(ctx->dev->core_dev->device, size * 4, +- ctx->sa_in, ctx->sa_in_dma_addr); ++ kfree(ctx->sa_in); ++ ctx->sa_in = NULL; + return -ENOMEM; + } + +- memset(ctx->sa_in, 0, size * 4); +- memset(ctx->sa_out, 0, size * 4); + ctx->sa_len = size; + + return 0; +@@ -152,40 +148,13 @@ int crypto4xx_alloc_sa(struct crypto4xx_ + + void crypto4xx_free_sa(struct crypto4xx_ctx *ctx) + { +- if (ctx->sa_in != NULL) +- dma_free_coherent(ctx->dev->core_dev->device, ctx->sa_len * 4, +- ctx->sa_in, ctx->sa_in_dma_addr); +- if (ctx->sa_out != NULL) +- dma_free_coherent(ctx->dev->core_dev->device, ctx->sa_len * 4, +- ctx->sa_out, ctx->sa_out_dma_addr); +- +- ctx->sa_in_dma_addr = 0; +- ctx->sa_out_dma_addr = 0; ++ kfree(ctx->sa_in); ++ ctx->sa_in = NULL; ++ kfree(ctx->sa_out); ++ ctx->sa_out = NULL; + ctx->sa_len = 0; + } + +-u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx) +-{ +- ctx->state_record = dma_alloc_coherent(ctx->dev->core_dev->device, +- sizeof(struct sa_state_record), +- &ctx->state_record_dma_addr, GFP_ATOMIC); +- if (!ctx->state_record_dma_addr) +- return -ENOMEM; +- memset(ctx->state_record, 0, sizeof(struct sa_state_record)); +- +- return 0; +-} +- +-static void crypto4xx_free_state_record(struct crypto4xx_ctx *ctx) +-{ +- if (ctx->state_record != NULL) +- dma_free_coherent(ctx->dev->core_dev->device, +- sizeof(struct sa_state_record), +- ctx->state_record, +- ctx->state_record_dma_addr); +- ctx->state_record_dma_addr = 0; +-} +- + /** + * alloc memory for the gather ring + * no need to alloc buf for the ring +@@ -883,8 +852,6 @@ static int crypto4xx_alg_init(struct cry + ctx->dev = amcc_alg->dev; + ctx->sa_in = NULL; + ctx->sa_out = NULL; +- ctx->sa_in_dma_addr = 0; +- ctx->sa_out_dma_addr = 0; + ctx->sa_len = 0; + + switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) { +@@ -905,7 +872,6 @@ static void crypto4xx_alg_exit(struct cr + struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm); + + crypto4xx_free_sa(ctx); +- crypto4xx_free_state_record(ctx); + } + + int crypto4xx_register_alg(struct crypto4xx_device *sec_dev, +--- a/drivers/crypto/amcc/crypto4xx_core.h ++++ b/drivers/crypto/amcc/crypto4xx_core.h +@@ -122,11 +122,8 @@ struct crypto4xx_core_device { + struct crypto4xx_ctx { + struct crypto4xx_device *dev; + struct dynamic_sa_ctl *sa_in; +- dma_addr_t sa_in_dma_addr; + struct dynamic_sa_ctl *sa_out; +- dma_addr_t sa_out_dma_addr; +- struct sa_state_record *state_record; +- dma_addr_t state_record_dma_addr; ++ __le32 iv_nonce; + u32 sa_len; + }; + +@@ -159,7 +156,6 @@ static inline struct crypto4xx_alg *cryp + int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size); + void crypto4xx_free_sa(struct crypto4xx_ctx *ctx); + void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx); +-u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx); + int crypto4xx_build_pd(struct crypto_async_request *req, + struct crypto4xx_ctx *ctx, + struct scatterlist *src, |