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209 lines
6.3 KiB
209 lines
6.3 KiB
From 2f77690dcb96e525bc6b57bce4a0eaecaa2878d1 Mon Sep 17 00:00:00 2001
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From: Christian Lamparter <chunkeey@gmail.com>
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Date: Wed, 4 Oct 2017 01:00:14 +0200
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Subject: [PATCH 22/25] crypto: crypto4xx - simplify sa and state context
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acquisition
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Thanks to the big overhaul of crypto4xx_build_pd(), the request-local
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sa_in, sa_out and state_record allocation can be simplified.
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There's no need to setup any dma coherent memory anymore and
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much of the support code can be removed.
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Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
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Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
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---
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drivers/crypto/amcc/crypto4xx_alg.c | 27 +++++--------------
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drivers/crypto/amcc/crypto4xx_core.c | 50 ++++++------------------------------
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drivers/crypto/amcc/crypto4xx_core.h | 6 +----
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3 files changed, 15 insertions(+), 68 deletions(-)
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--- a/drivers/crypto/amcc/crypto4xx_alg.c
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+++ b/drivers/crypto/amcc/crypto4xx_alg.c
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@@ -122,20 +122,13 @@ static int crypto4xx_setkey_aes(struct c
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}
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/* Create SA */
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- if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr)
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+ if (ctx->sa_in || ctx->sa_out)
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crypto4xx_free_sa(ctx);
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rc = crypto4xx_alloc_sa(ctx, SA_AES128_LEN + (keylen-16) / 4);
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if (rc)
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return rc;
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- if (ctx->state_record_dma_addr == 0) {
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- rc = crypto4xx_alloc_state_record(ctx);
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- if (rc) {
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- crypto4xx_free_sa(ctx);
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- return rc;
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- }
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- }
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/* Setup SA */
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sa = ctx->sa_in;
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@@ -204,8 +197,8 @@ int crypto4xx_setkey_rfc3686(struct cryp
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if (rc)
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return rc;
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- crypto4xx_memcpy_to_le32(ctx->state_record->save_iv,
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- key + keylen - CTR_RFC3686_NONCE_SIZE, CTR_RFC3686_NONCE_SIZE);
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+ ctx->iv_nonce = cpu_to_le32p((u32 *)&key[keylen -
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+ CTR_RFC3686_NONCE_SIZE]);
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return 0;
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}
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@@ -214,7 +207,7 @@ int crypto4xx_rfc3686_encrypt(struct abl
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{
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struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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__le32 iv[AES_IV_SIZE / 4] = {
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- ctx->state_record->save_iv[0],
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+ ctx->iv_nonce,
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cpu_to_le32p((u32 *) req->info),
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cpu_to_le32p((u32 *) (req->info + 4)),
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cpu_to_le32(1) };
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@@ -228,7 +221,7 @@ int crypto4xx_rfc3686_decrypt(struct abl
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{
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struct crypto4xx_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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__le32 iv[AES_IV_SIZE / 4] = {
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- ctx->state_record->save_iv[0],
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+ ctx->iv_nonce,
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cpu_to_le32p((u32 *) req->info),
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cpu_to_le32p((u32 *) (req->info + 4)),
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cpu_to_le32(1) };
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@@ -255,21 +248,13 @@ static int crypto4xx_hash_alg_init(struc
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ctx->dev = my_alg->dev;
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/* Create SA */
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- if (ctx->sa_in_dma_addr || ctx->sa_out_dma_addr)
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+ if (ctx->sa_in || ctx->sa_out)
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crypto4xx_free_sa(ctx);
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rc = crypto4xx_alloc_sa(ctx, sa_len);
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if (rc)
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return rc;
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- if (ctx->state_record_dma_addr == 0) {
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- crypto4xx_alloc_state_record(ctx);
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- if (!ctx->state_record_dma_addr) {
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- crypto4xx_free_sa(ctx);
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- return -ENOMEM;
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- }
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- }
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-
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crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
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sizeof(struct crypto4xx_ctx));
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sa = (struct dynamic_sa_hash160 *)ctx->sa_in;
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--- a/drivers/crypto/amcc/crypto4xx_core.c
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+++ b/drivers/crypto/amcc/crypto4xx_core.c
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@@ -130,21 +130,17 @@ static void crypto4xx_hw_init(struct cry
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int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size)
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{
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- ctx->sa_in = dma_alloc_coherent(ctx->dev->core_dev->device, size * 4,
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- &ctx->sa_in_dma_addr, GFP_ATOMIC);
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+ ctx->sa_in = kzalloc(size * 4, GFP_ATOMIC);
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if (ctx->sa_in == NULL)
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return -ENOMEM;
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- ctx->sa_out = dma_alloc_coherent(ctx->dev->core_dev->device, size * 4,
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- &ctx->sa_out_dma_addr, GFP_ATOMIC);
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+ ctx->sa_out = kzalloc(size * 4, GFP_ATOMIC);
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if (ctx->sa_out == NULL) {
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- dma_free_coherent(ctx->dev->core_dev->device, size * 4,
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- ctx->sa_in, ctx->sa_in_dma_addr);
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+ kfree(ctx->sa_in);
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+ ctx->sa_in = NULL;
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return -ENOMEM;
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}
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- memset(ctx->sa_in, 0, size * 4);
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- memset(ctx->sa_out, 0, size * 4);
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ctx->sa_len = size;
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return 0;
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@@ -152,40 +148,13 @@ int crypto4xx_alloc_sa(struct crypto4xx_
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void crypto4xx_free_sa(struct crypto4xx_ctx *ctx)
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{
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- if (ctx->sa_in != NULL)
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- dma_free_coherent(ctx->dev->core_dev->device, ctx->sa_len * 4,
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- ctx->sa_in, ctx->sa_in_dma_addr);
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- if (ctx->sa_out != NULL)
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- dma_free_coherent(ctx->dev->core_dev->device, ctx->sa_len * 4,
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- ctx->sa_out, ctx->sa_out_dma_addr);
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-
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- ctx->sa_in_dma_addr = 0;
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- ctx->sa_out_dma_addr = 0;
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+ kfree(ctx->sa_in);
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+ ctx->sa_in = NULL;
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+ kfree(ctx->sa_out);
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+ ctx->sa_out = NULL;
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ctx->sa_len = 0;
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}
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-u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx)
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-{
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- ctx->state_record = dma_alloc_coherent(ctx->dev->core_dev->device,
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- sizeof(struct sa_state_record),
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- &ctx->state_record_dma_addr, GFP_ATOMIC);
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- if (!ctx->state_record_dma_addr)
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- return -ENOMEM;
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- memset(ctx->state_record, 0, sizeof(struct sa_state_record));
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-
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- return 0;
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-}
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-
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-static void crypto4xx_free_state_record(struct crypto4xx_ctx *ctx)
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-{
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- if (ctx->state_record != NULL)
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- dma_free_coherent(ctx->dev->core_dev->device,
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- sizeof(struct sa_state_record),
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- ctx->state_record,
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- ctx->state_record_dma_addr);
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- ctx->state_record_dma_addr = 0;
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-}
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-
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/**
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* alloc memory for the gather ring
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* no need to alloc buf for the ring
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@@ -888,8 +857,6 @@ static int crypto4xx_alg_init(struct cry
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ctx->dev = amcc_alg->dev;
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ctx->sa_in = NULL;
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ctx->sa_out = NULL;
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- ctx->sa_in_dma_addr = 0;
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- ctx->sa_out_dma_addr = 0;
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ctx->sa_len = 0;
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switch (alg->cra_flags & CRYPTO_ALG_TYPE_MASK) {
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@@ -910,7 +877,6 @@ static void crypto4xx_alg_exit(struct cr
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struct crypto4xx_ctx *ctx = crypto_tfm_ctx(tfm);
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crypto4xx_free_sa(ctx);
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- crypto4xx_free_state_record(ctx);
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}
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int crypto4xx_register_alg(struct crypto4xx_device *sec_dev,
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--- a/drivers/crypto/amcc/crypto4xx_core.h
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+++ b/drivers/crypto/amcc/crypto4xx_core.h
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@@ -122,11 +122,8 @@ struct crypto4xx_core_device {
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struct crypto4xx_ctx {
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struct crypto4xx_device *dev;
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struct dynamic_sa_ctl *sa_in;
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- dma_addr_t sa_in_dma_addr;
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struct dynamic_sa_ctl *sa_out;
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- dma_addr_t sa_out_dma_addr;
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- struct sa_state_record *state_record;
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- dma_addr_t state_record_dma_addr;
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+ __le32 iv_nonce;
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u32 sa_len;
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};
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@@ -159,7 +156,6 @@ static inline struct crypto4xx_alg *cryp
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int crypto4xx_alloc_sa(struct crypto4xx_ctx *ctx, u32 size);
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void crypto4xx_free_sa(struct crypto4xx_ctx *ctx);
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void crypto4xx_free_ctx(struct crypto4xx_ctx *ctx);
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-u32 crypto4xx_alloc_state_record(struct crypto4xx_ctx *ctx);
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int crypto4xx_build_pd(struct crypto_async_request *req,
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struct crypto4xx_ctx *ctx,
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struct scatterlist *src,
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