thr3ads.net - Linux Virtualization - [PATCH RFC 4/4] crypto: stm32: convert to the new crypto engine API [Nov 2017]

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Corentin Labbe

2017-Nov-29 08:41 UTC

[PATCH RFC 0/4] crypto: engine - Permit to enqueue all async requests

Hello

The current crypto_engine support only ahash and ablkcipher.
My first patch which try to add skcipher was Nacked, it will add too many
functions
and adding other algs(aead, asymetric_key) will make the situation worst.

This patchset remove all algs specific stuff and now only process generic
crypto_async_request.

The requests handler function pointer are now moved out of struct engine and
are now stored directly in a crypto_engine_reqctx.

The original proposal of Herbert [1] cannot be done completly since the
crypto_engine
could only dequeue crypto_async_request and it is impossible to access any
request_ctx
without knowing the underlying request type.

So I do something near that was requested: adding crypto_engine_reqctx in TFM
context.
Note that the current implementation expect that crypto_engine_reqctx
is the first member of the context.

The first patch convert the crypto engine with the new way,
while the following patchs convert the 3 existing users of crypto_engine.
Note that this split break bisection, so probably the final commit will be all
merged.

The 3 latest patch were compile tested only, but the first is tested
successfully
with my new sun8i-ce driver.

Regards

[1] https://www.mail-archive.com/linux-kernel at vger.kernel.org/msg1474434.html

Corentin Labbe (4):
  crypto: engine - Permit to enqueue all async requests
  crypto: omap: convert to new crypto engine API
  crypto: virtio: convert to new crypto engine API
  crypto: stm32: convert to the new crypto engine API

 crypto/crypto_engine.c                       | 188 ++++++---------------------
 drivers/crypto/omap-aes.c                    |  21 ++-
 drivers/crypto/omap-aes.h                    |   3 +
 drivers/crypto/omap-des.c                    |  24 +++-
 drivers/crypto/stm32/stm32-hash.c            |  22 +++-
 drivers/crypto/virtio/virtio_crypto_algs.c   |  15 ++-
 drivers/crypto/virtio/virtio_crypto_common.h |   2 +-
 drivers/crypto/virtio/virtio_crypto_core.c   |   3 -
 include/crypto/engine.h                      |  46 +++----
 9 files changed, 122 insertions(+), 202 deletions(-)

-- 
2.13.6

Corentin Labbe

2017-Nov-29 08:41 UTC

head link

[PATCH RFC 1/4] crypto: engine - Permit to enqueue all async requests

The crypto engine could actually only enqueue hash and ablkcipher request.
This patch permit it to enqueue any type of crypto_async_request.

Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
---
 crypto/crypto_engine.c  | 188 +++++++++++-------------------------------------
 include/crypto/engine.h |  46 +++++-------
 2 files changed, 60 insertions(+), 174 deletions(-)

diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
index 61e7c4e02fd2..f7c4c4c1f41b 100644
--- a/crypto/crypto_engine.c
+++ b/crypto/crypto_engine.c
@@ -34,11 +34,10 @@ static void crypto_pump_requests(struct crypto_engine
*engine,
 				 bool in_kthread)
 {
 	struct crypto_async_request *async_req, *backlog;
-	struct ahash_request *hreq;
-	struct ablkcipher_request *breq;
 	unsigned long flags;
 	bool was_busy = false;
-	int ret, rtype;
+	int ret;
+	struct crypto_engine_reqctx *enginectx;
 
 	spin_lock_irqsave(&engine->queue_lock, flags);
 
@@ -94,7 +93,6 @@ static void crypto_pump_requests(struct crypto_engine *engine,
 
 	spin_unlock_irqrestore(&engine->queue_lock, flags);
 
-	rtype = crypto_tfm_alg_type(engine->cur_req->tfm);
 	/* Until here we get the request need to be encrypted successfully */
 	if (!was_busy && engine->prepare_crypt_hardware) {
 		ret = engine->prepare_crypt_hardware(engine);
@@ -104,57 +102,31 @@ static void crypto_pump_requests(struct crypto_engine
*engine,
 		}
 	}
 
-	switch (rtype) {
-	case CRYPTO_ALG_TYPE_AHASH:
-		hreq = ahash_request_cast(engine->cur_req);
-		if (engine->prepare_hash_request) {
-			ret = engine->prepare_hash_request(engine, hreq);
-			if (ret) {
-				dev_err(engine->dev, "failed to prepare request: %d\n",
-					ret);
-				goto req_err;
-			}
-			engine->cur_req_prepared = true;
-		}
-		ret = engine->hash_one_request(engine, hreq);
-		if (ret) {
-			dev_err(engine->dev, "failed to hash one request from
queue\n");
-			goto req_err;
-		}
-		return;
-	case CRYPTO_ALG_TYPE_ABLKCIPHER:
-		breq = ablkcipher_request_cast(engine->cur_req);
-		if (engine->prepare_cipher_request) {
-			ret = engine->prepare_cipher_request(engine, breq);
-			if (ret) {
-				dev_err(engine->dev, "failed to prepare request: %d\n",
-					ret);
-				goto req_err;
-			}
-			engine->cur_req_prepared = true;
-		}
-		ret = engine->cipher_one_request(engine, breq);
+	enginectx = crypto_tfm_ctx(async_req->tfm);
+
+	if (enginectx->op.prepare_request) {
+		ret = enginectx->op.prepare_request(engine, async_req);
 		if (ret) {
-			dev_err(engine->dev, "failed to cipher one request from
queue\n");
+			dev_err(engine->dev, "failed to prepare request: %d\n",
+				ret);
 			goto req_err;
 		}
-		return;
-	default:
-		dev_err(engine->dev, "failed to prepare request of unknown
type\n");
-		return;
+		engine->cur_req_prepared = true;
+	}
+	if (!enginectx->op.do_one_request) {
+		dev_err(engine->dev, "failed to do request\n");
+		ret = -EINVAL;
+		goto req_err;
+	}
+	ret = enginectx->op.do_one_request(engine, async_req);
+	if (ret) {
+		dev_err(engine->dev, "failed to hash one request from queue\n");
+		goto req_err;
 	}
+	return;
 
 req_err:
-	switch (rtype) {
-	case CRYPTO_ALG_TYPE_AHASH:
-		hreq = ahash_request_cast(engine->cur_req);
-		crypto_finalize_hash_request(engine, hreq, ret);
-		break;
-	case CRYPTO_ALG_TYPE_ABLKCIPHER:
-		breq = ablkcipher_request_cast(engine->cur_req);
-		crypto_finalize_cipher_request(engine, breq, ret);
-		break;
-	}
+	crypto_finalize_request(engine, async_req, ret);
 	return;
 
 out:
@@ -170,59 +142,16 @@ static void crypto_pump_work(struct kthread_work *work)
 }
 
 /**
- * crypto_transfer_cipher_request - transfer the new request into the
- * enginequeue
+ * crypto_transfer_request - transfer the new request into the engine queue
  * @engine: the hardware engine
  * @req: the request need to be listed into the engine queue
  */
-int crypto_transfer_cipher_request(struct crypto_engine *engine,
-				   struct ablkcipher_request *req,
-				   bool need_pump)
+int crypto_transfer_request(struct crypto_engine *engine,
+			    struct crypto_async_request *req, bool need_pump)
 {
 	unsigned long flags;
 	int ret;
 
-	spin_lock_irqsave(&engine->queue_lock, flags);
-
-	if (!engine->running) {
-		spin_unlock_irqrestore(&engine->queue_lock, flags);
-		return -ESHUTDOWN;
-	}
-
-	ret = ablkcipher_enqueue_request(&engine->queue, req);
-
-	if (!engine->busy && need_pump)
-		kthread_queue_work(engine->kworker, &engine->pump_requests);
-
-	spin_unlock_irqrestore(&engine->queue_lock, flags);
-	return ret;
-}
-EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request);
-
-/**
- * crypto_transfer_cipher_request_to_engine - transfer one request to list
- * into the engine queue
- * @engine: the hardware engine
- * @req: the request need to be listed into the engine queue
- */
-int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine,
-					     struct ablkcipher_request *req)
-{
-	return crypto_transfer_cipher_request(engine, req, true);
-}
-EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request_to_engine);
-
-/**
- * crypto_transfer_hash_request - transfer the new request into the
- * enginequeue
- * @engine: the hardware engine
- * @req: the request need to be listed into the engine queue
- */
-int crypto_transfer_hash_request(struct crypto_engine *engine,
-				 struct ahash_request *req, bool need_pump)
-{
-	unsigned long flags;
-	int ret;
 
 	spin_lock_irqsave(&engine->queue_lock, flags);
 
@@ -231,7 +160,7 @@ int crypto_transfer_hash_request(struct crypto_engine
*engine,
 		return -ESHUTDOWN;
 	}
 
-	ret = ahash_enqueue_request(&engine->queue, req);
+	ret = crypto_enqueue_request(&engine->queue, req);
 
 	if (!engine->busy && need_pump)
 		kthread_queue_work(engine->kworker, &engine->pump_requests);
@@ -239,80 +168,45 @@ int crypto_transfer_hash_request(struct crypto_engine
*engine,
 	spin_unlock_irqrestore(&engine->queue_lock, flags);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(crypto_transfer_hash_request);
+EXPORT_SYMBOL_GPL(crypto_transfer_request);
 
 /**
- * crypto_transfer_hash_request_to_engine - transfer one request to list
+ * crypto_transfer_request_to_engine - transfer one request to list
  * into the engine queue
  * @engine: the hardware engine
  * @req: the request need to be listed into the engine queue
  */
-int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
-					   struct ahash_request *req)
-{
-	return crypto_transfer_hash_request(engine, req, true);
-}
-EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine);
-
-/**
- * crypto_finalize_cipher_request - finalize one request if the request is done
- * @engine: the hardware engine
- * @req: the request need to be finalized
- * @err: error number
- */
-void crypto_finalize_cipher_request(struct crypto_engine *engine,
-				    struct ablkcipher_request *req, int err)
+int crypto_transfer_request_to_engine(struct crypto_engine *engine,
+				      struct crypto_async_request *req)
 {
-	unsigned long flags;
-	bool finalize_cur_req = false;
-	int ret;
-
-	spin_lock_irqsave(&engine->queue_lock, flags);
-	if (engine->cur_req == &req->base)
-		finalize_cur_req = true;
-	spin_unlock_irqrestore(&engine->queue_lock, flags);
-
-	if (finalize_cur_req) {
-		if (engine->cur_req_prepared &&
-		    engine->unprepare_cipher_request) {
-			ret = engine->unprepare_cipher_request(engine, req);
-			if (ret)
-				dev_err(engine->dev, "failed to unprepare request\n");
-		}
-		spin_lock_irqsave(&engine->queue_lock, flags);
-		engine->cur_req = NULL;
-		engine->cur_req_prepared = false;
-		spin_unlock_irqrestore(&engine->queue_lock, flags);
-	}
-
-	req->base.complete(&req->base, err);
-
-	kthread_queue_work(engine->kworker, &engine->pump_requests);
+	return crypto_transfer_request(engine, req, true);
 }
-EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request);
+EXPORT_SYMBOL_GPL(crypto_transfer_request_to_engine);
 
 /**
- * crypto_finalize_hash_request - finalize one request if the request is done
+ * crypto_finalize_request - finalize one request if the request is done
  * @engine: the hardware engine
  * @req: the request need to be finalized
  * @err: error number
  */
-void crypto_finalize_hash_request(struct crypto_engine *engine,
-				  struct ahash_request *req, int err)
+void crypto_finalize_request(struct crypto_engine *engine,
+			     struct crypto_async_request *req, int err)
 {
 	unsigned long flags;
 	bool finalize_cur_req = false;
 	int ret;
+	struct crypto_engine_reqctx *enginectx;
 
 	spin_lock_irqsave(&engine->queue_lock, flags);
-	if (engine->cur_req == &req->base)
+	if (engine->cur_req == req)
 		finalize_cur_req = true;
 	spin_unlock_irqrestore(&engine->queue_lock, flags);
 
 	if (finalize_cur_req) {
+		enginectx = crypto_tfm_ctx(req->tfm);
 		if (engine->cur_req_prepared &&
-		    engine->unprepare_hash_request) {
-			ret = engine->unprepare_hash_request(engine, req);
+		    enginectx->op.unprepare_request) {
+			ret = enginectx->op.unprepare_request(engine, req);
 			if (ret)
 				dev_err(engine->dev, "failed to unprepare request\n");
 		}
@@ -322,11 +216,11 @@ void crypto_finalize_hash_request(struct crypto_engine
*engine,
 		spin_unlock_irqrestore(&engine->queue_lock, flags);
 	}
 
-	req->base.complete(&req->base, err);
+	req->complete(req, err);
 
 	kthread_queue_work(engine->kworker, &engine->pump_requests);
 }
-EXPORT_SYMBOL_GPL(crypto_finalize_hash_request);
+EXPORT_SYMBOL_GPL(crypto_finalize_request);
 
 /**
  * crypto_engine_start - start the hardware engine
diff --git a/include/crypto/engine.h b/include/crypto/engine.h
index dd04c1699b51..2e45db45849b 100644
--- a/include/crypto/engine.h
+++ b/include/crypto/engine.h
@@ -17,7 +17,6 @@
 #include <linux/kernel.h>
 #include <linux/kthread.h>
 #include <crypto/algapi.h>
-#include <crypto/hash.h>
 
 #define ENGINE_NAME_LEN	30
 /*
@@ -65,19 +64,6 @@ struct crypto_engine {
 	int (*prepare_crypt_hardware)(struct crypto_engine *engine);
 	int (*unprepare_crypt_hardware)(struct crypto_engine *engine);
 
-	int (*prepare_cipher_request)(struct crypto_engine *engine,
-				      struct ablkcipher_request *req);
-	int (*unprepare_cipher_request)(struct crypto_engine *engine,
-					struct ablkcipher_request *req);
-	int (*prepare_hash_request)(struct crypto_engine *engine,
-				    struct ahash_request *req);
-	int (*unprepare_hash_request)(struct crypto_engine *engine,
-				      struct ahash_request *req);
-	int (*cipher_one_request)(struct crypto_engine *engine,
-				  struct ablkcipher_request *req);
-	int (*hash_one_request)(struct crypto_engine *engine,
-				struct ahash_request *req);
-
 	struct kthread_worker           *kworker;
 	struct kthread_work             pump_requests;
 
@@ -85,19 +71,25 @@ struct crypto_engine {
 	struct crypto_async_request	*cur_req;
 };
 
-int crypto_transfer_cipher_request(struct crypto_engine *engine,
-				   struct ablkcipher_request *req,
-				   bool need_pump);
-int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine,
-					     struct ablkcipher_request *req);
-int crypto_transfer_hash_request(struct crypto_engine *engine,
-				 struct ahash_request *req, bool need_pump);
-int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
-					   struct ahash_request *req);
-void crypto_finalize_cipher_request(struct crypto_engine *engine,
-				    struct ablkcipher_request *req, int err);
-void crypto_finalize_hash_request(struct crypto_engine *engine,
-				  struct ahash_request *req, int err);
+struct crypto_engine_op {
+	int (*prepare_request)(struct crypto_engine *engine,
+			       struct crypto_async_request *areq);
+	int (*unprepare_request)(struct crypto_engine *engine,
+				 struct crypto_async_request *areq);
+	int (*do_one_request)(struct crypto_engine *engine,
+			      struct crypto_async_request *areq);
+};
+
+struct crypto_engine_reqctx {
+	struct crypto_engine_op op;
+};
+
+int crypto_transfer_request(struct crypto_engine *engine,
+			    struct crypto_async_request *req, bool need_pump);
+int crypto_transfer_request_to_engine(struct crypto_engine *engine,
+				      struct crypto_async_request *req);
+void crypto_finalize_request(struct crypto_engine *engine,
+			     struct crypto_async_request *req, int err);
 int crypto_engine_start(struct crypto_engine *engine);
 int crypto_engine_stop(struct crypto_engine *engine);
 struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt);
-- 
2.13.6

Corentin Labbe

2017-Nov-29 08:41 UTC

head link

[PATCH RFC 2/4] crypto: omap: convert to new crypto engine API

This patch convert the driver to the new crypto engine API.

Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
---
 drivers/crypto/omap-aes.c | 21 +++++++++++++++------
 drivers/crypto/omap-aes.h |  3 +++
 drivers/crypto/omap-des.c | 24 ++++++++++++++++++------
 3 files changed, 36 insertions(+), 12 deletions(-)

diff --git a/drivers/crypto/omap-aes.c b/drivers/crypto/omap-aes.c
index fbec0a2e76dd..4a31bbfca9a4 100644
--- a/drivers/crypto/omap-aes.c
+++ b/drivers/crypto/omap-aes.c
@@ -388,7 +388,7 @@ static void omap_aes_finish_req(struct omap_aes_dev *dd, int
err)
 
 	pr_debug("err: %d\n", err);
 
-	crypto_finalize_cipher_request(dd->engine, req, err);
+	crypto_finalize_request(dd->engine, &req->base, err);
 
 	pm_runtime_mark_last_busy(dd->dev);
 	pm_runtime_put_autosuspend(dd->dev);
@@ -408,14 +408,15 @@ static int omap_aes_handle_queue(struct omap_aes_dev *dd,
 				 struct ablkcipher_request *req)
 {
 	if (req)
-		return crypto_transfer_cipher_request_to_engine(dd->engine, req);
+		return crypto_transfer_request_to_engine(dd->engine, &req->base);
 
 	return 0;
 }
 
 static int omap_aes_prepare_req(struct crypto_engine *engine,
-				struct ablkcipher_request *req)
+				struct crypto_async_request *areq)
 {
+	struct ablkcipher_request *req = ablkcipher_request_cast(areq);
 	struct omap_aes_ctx *ctx = crypto_ablkcipher_ctx(
 			crypto_ablkcipher_reqtfm(req));
 	struct omap_aes_reqctx *rctx = ablkcipher_request_ctx(req);
@@ -468,8 +469,9 @@ static int omap_aes_prepare_req(struct crypto_engine
*engine,
 }
 
 static int omap_aes_crypt_req(struct crypto_engine *engine,
-			      struct ablkcipher_request *req)
+			      struct crypto_async_request *areq)
 {
+	struct ablkcipher_request *req = ablkcipher_request_cast(areq);
 	struct omap_aes_reqctx *rctx = ablkcipher_request_ctx(req);
 	struct omap_aes_dev *dd = rctx->dd;
 
@@ -601,6 +603,11 @@ static int omap_aes_ctr_decrypt(struct ablkcipher_request
*req)
 	return omap_aes_crypt(req, FLAGS_CTR);
 }
 
+static int omap_aes_prepare_req(struct crypto_engine *engine,
+				struct crypto_async_request *req);
+static int omap_aes_crypt_req(struct crypto_engine *engine,
+			      struct crypto_async_request *req);
+
 static int omap_aes_cra_init(struct crypto_tfm *tfm)
 {
 	const char *name = crypto_tfm_alg_name(tfm);
@@ -616,6 +623,10 @@ static int omap_aes_cra_init(struct crypto_tfm *tfm)
 
 	tfm->crt_ablkcipher.reqsize = sizeof(struct omap_aes_reqctx);
 
+	ctx->enginectx.op.prepare_request = omap_aes_prepare_req;
+	ctx->enginectx.op.unprepare_request = NULL;
+	ctx->enginectx.op.do_one_request = omap_aes_crypt_req;
+
 	return 0;
 }
 
@@ -1119,8 +1130,6 @@ static int omap_aes_probe(struct platform_device *pdev)
 		goto err_engine;
 	}
 
-	dd->engine->prepare_cipher_request = omap_aes_prepare_req;
-	dd->engine->cipher_one_request = omap_aes_crypt_req;
 	err = crypto_engine_start(dd->engine);
 	if (err)
 		goto err_engine;
diff --git a/drivers/crypto/omap-aes.h b/drivers/crypto/omap-aes.h
index 8906342e2b9a..f6ce94907ade 100644
--- a/drivers/crypto/omap-aes.h
+++ b/drivers/crypto/omap-aes.h
@@ -13,6 +13,8 @@
 #ifndef __OMAP_AES_H__
 #define __OMAP_AES_H__
 
+#include <crypto/engine.h>
+
 #define DST_MAXBURST			4
 #define DMA_MIN				(DST_MAXBURST * sizeof(u32))
 
@@ -95,6 +97,7 @@ struct omap_aes_gcm_result {
 };
 
 struct omap_aes_ctx {
+	struct crypto_engine_reqctx enginectx;
 	int		keylen;
 	u32		key[AES_KEYSIZE_256 / sizeof(u32)];
 	u8		nonce[4];
diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index ebc5c0f11f03..94212248159e 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -86,6 +86,7 @@
 #define FLAGS_OUT_DATA_ST_SHIFT	10
 
 struct omap_des_ctx {
+	struct crypto_engine_reqctx enginectx;
 	struct omap_des_dev *dd;
 
 	int		keylen;
@@ -498,7 +499,7 @@ static void omap_des_finish_req(struct omap_des_dev *dd, int
err)
 
 	pr_debug("err: %d\n", err);
 
-	crypto_finalize_cipher_request(dd->engine, req, err);
+	crypto_finalize_request(dd->engine, &req->base, err);
 
 	pm_runtime_mark_last_busy(dd->dev);
 	pm_runtime_put_autosuspend(dd->dev);
@@ -520,14 +521,15 @@ static int omap_des_handle_queue(struct omap_des_dev *dd,
 				 struct ablkcipher_request *req)
 {
 	if (req)
-		return crypto_transfer_cipher_request_to_engine(dd->engine, req);
+		return crypto_transfer_request_to_engine(dd->engine, &req->base);
 
 	return 0;
 }
 
 static int omap_des_prepare_req(struct crypto_engine *engine,
-				struct ablkcipher_request *req)
+				struct crypto_async_request *areq)
 {
+	struct ablkcipher_request *req = ablkcipher_request_cast(areq);
 	struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
 			crypto_ablkcipher_reqtfm(req));
 	struct omap_des_dev *dd = omap_des_find_dev(ctx);
@@ -582,8 +584,9 @@ static int omap_des_prepare_req(struct crypto_engine
*engine,
 }
 
 static int omap_des_crypt_req(struct crypto_engine *engine,
-			      struct ablkcipher_request *req)
+			      struct crypto_async_request *areq)
 {
+	struct ablkcipher_request *req = ablkcipher_request_cast(areq);
 	struct omap_des_ctx *ctx = crypto_ablkcipher_ctx(
 			crypto_ablkcipher_reqtfm(req));
 	struct omap_des_dev *dd = omap_des_find_dev(ctx);
@@ -695,12 +698,23 @@ static int omap_des_cbc_decrypt(struct ablkcipher_request
*req)
 	return omap_des_crypt(req, FLAGS_CBC);
 }
 
+static int omap_des_prepare_req(struct crypto_engine *engine,
+				struct crypto_async_request *areq);
+static int omap_des_crypt_req(struct crypto_engine *engine,
+			      struct crypto_async_request *areq);
+
 static int omap_des_cra_init(struct crypto_tfm *tfm)
 {
+	struct omap_des_ctx *ctx = crypto_tfm_ctx(tfm);
+
 	pr_debug("enter\n");
 
 	tfm->crt_ablkcipher.reqsize = sizeof(struct omap_des_reqctx);
 
+	ctx->enginectx.op.prepare_request = omap_des_prepare_req;
+	ctx->enginectx.op.unprepare_request = NULL;
+	ctx->enginectx.op.do_one_request = omap_des_crypt_req;
+
 	return 0;
 }
 
@@ -1046,8 +1060,6 @@ static int omap_des_probe(struct platform_device *pdev)
 		goto err_engine;
 	}
 
-	dd->engine->prepare_cipher_request = omap_des_prepare_req;
-	dd->engine->cipher_one_request = omap_des_crypt_req;
 	err = crypto_engine_start(dd->engine);
 	if (err)
 		goto err_engine;
-- 
2.13.6

Corentin Labbe

2017-Nov-29 08:41 UTC

head link

[PATCH RFC 3/4] crypto: virtio: convert to new crypto engine API

This patch convert the driver to the new crypto engine API.

Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
---
 drivers/crypto/virtio/virtio_crypto_algs.c   | 15 ++++++++++-----
 drivers/crypto/virtio/virtio_crypto_common.h |  2 +-
 drivers/crypto/virtio/virtio_crypto_core.c   |  3 ---
 3 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/drivers/crypto/virtio/virtio_crypto_algs.c
b/drivers/crypto/virtio/virtio_crypto_algs.c
index abe8c15450df..a2ac7a08247f 100644
--- a/drivers/crypto/virtio/virtio_crypto_algs.c
+++ b/drivers/crypto/virtio/virtio_crypto_algs.c
@@ -29,6 +29,7 @@
 
 
 struct virtio_crypto_ablkcipher_ctx {
+	struct crypto_engine_reqctx enginectx;
 	struct virtio_crypto *vcrypto;
 	struct crypto_tfm *tfm;
 
@@ -491,7 +492,7 @@ static int virtio_crypto_ablkcipher_encrypt(struct
ablkcipher_request *req)
 	vc_sym_req->ablkcipher_req = req;
 	vc_sym_req->encrypt = true;
 
-	return crypto_transfer_cipher_request_to_engine(data_vq->engine, req);
+	return crypto_transfer_request_to_engine(data_vq->engine,
&req->base);
 }
 
 static int virtio_crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
@@ -511,7 +512,7 @@ static int virtio_crypto_ablkcipher_decrypt(struct
ablkcipher_request *req)
 	vc_sym_req->ablkcipher_req = req;
 	vc_sym_req->encrypt = false;
 
-	return crypto_transfer_cipher_request_to_engine(data_vq->engine, req);
+	return crypto_transfer_request_to_engine(data_vq->engine,
&req->base);
 }
 
 static int virtio_crypto_ablkcipher_init(struct crypto_tfm *tfm)
@@ -521,6 +522,9 @@ static int virtio_crypto_ablkcipher_init(struct crypto_tfm
*tfm)
 	tfm->crt_ablkcipher.reqsize = sizeof(struct virtio_crypto_sym_request);
 	ctx->tfm = tfm;
 
+	ctx->enginectx.op.do_one_request = virtio_crypto_ablkcipher_crypt_req;
+	ctx->enginectx.op.prepare_request = NULL;
+	ctx->enginectx.op.unprepare_request = NULL;
 	return 0;
 }
 
@@ -539,8 +543,9 @@ static void virtio_crypto_ablkcipher_exit(struct crypto_tfm
*tfm)
 
 int virtio_crypto_ablkcipher_crypt_req(
 	struct crypto_engine *engine,
-	struct ablkcipher_request *req)
+	struct crypto_async_request *areq)
 {
+	struct ablkcipher_request *req = ablkcipher_request_cast(areq);
 	struct virtio_crypto_sym_request *vc_sym_req  				ablkcipher_request_ctx(req);
 	struct virtio_crypto_request *vc_req = &vc_sym_req->base;
@@ -561,8 +566,8 @@ static void virtio_crypto_ablkcipher_finalize_req(
 	struct ablkcipher_request *req,
 	int err)
 {
-	crypto_finalize_cipher_request(vc_sym_req->base.dataq->engine,
-					req, err);
+	crypto_finalize_request(vc_sym_req->base.dataq->engine,
+				&req->base, err);
 	kzfree(vc_sym_req->iv);
 	virtcrypto_clear_request(&vc_sym_req->base);
 }
diff --git a/drivers/crypto/virtio/virtio_crypto_common.h
b/drivers/crypto/virtio/virtio_crypto_common.h
index e976539a05d9..0d51f6ce226d 100644
--- a/drivers/crypto/virtio/virtio_crypto_common.h
+++ b/drivers/crypto/virtio/virtio_crypto_common.h
@@ -108,7 +108,7 @@ int virtcrypto_dev_start(struct virtio_crypto *vcrypto);
 void virtcrypto_dev_stop(struct virtio_crypto *vcrypto);
 int virtio_crypto_ablkcipher_crypt_req(
 	struct crypto_engine *engine,
-	struct ablkcipher_request *req);
+	struct crypto_async_request *req);
 
 void
 virtcrypto_clear_request(struct virtio_crypto_request *vc_req);
diff --git a/drivers/crypto/virtio/virtio_crypto_core.c
b/drivers/crypto/virtio/virtio_crypto_core.c
index ff1410a32c2b..83326986c113 100644
--- a/drivers/crypto/virtio/virtio_crypto_core.c
+++ b/drivers/crypto/virtio/virtio_crypto_core.c
@@ -111,9 +111,6 @@ static int virtcrypto_find_vqs(struct virtio_crypto *vi)
 			ret = -ENOMEM;
 			goto err_engine;
 		}
-
-		vi->data_vq[i].engine->cipher_one_request -		
virtio_crypto_ablkcipher_crypt_req;
 	}
 
 	kfree(names);
-- 
2.13.6

Corentin Labbe

2017-Nov-29 08:41 UTC

head link

[PATCH RFC 4/4] crypto: stm32: convert to the new crypto engine API

This patch convert the driver to the new crypto engine API.

Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
---
 drivers/crypto/stm32/stm32-hash.c | 22 +++++++++++++++-------
 1 file changed, 15 insertions(+), 7 deletions(-)

diff --git a/drivers/crypto/stm32/stm32-hash.c
b/drivers/crypto/stm32/stm32-hash.c
index 4ca4a264a833..e3f9f7b04ce2 100644
--- a/drivers/crypto/stm32/stm32-hash.c
+++ b/drivers/crypto/stm32/stm32-hash.c
@@ -122,6 +122,7 @@ enum stm32_hash_data_format {
 #define HASH_DMA_THRESHOLD		50
 
 struct stm32_hash_ctx {
+	struct crypto_engine_reqctx enginectx;
 	struct stm32_hash_dev	*hdev;
 	unsigned long		flags;
 
@@ -811,7 +812,7 @@ static void stm32_hash_finish_req(struct ahash_request *req,
int err)
 		rctx->flags |= HASH_FLAGS_ERRORS;
 	}
 
-	crypto_finalize_hash_request(hdev->engine, req, err);
+	crypto_finalize_request(hdev->engine, &req->base, err);
 }
 
 static int stm32_hash_hw_init(struct stm32_hash_dev *hdev,
@@ -828,15 +829,21 @@ static int stm32_hash_hw_init(struct stm32_hash_dev *hdev,
 	return 0;
 }
 
+static int stm32_hash_one_request(struct crypto_engine *engine,
+				  struct crypto_async_request *areq);
+static int stm32_hash_prepare_req(struct crypto_engine *engine,
+				  struct crypto_async_request *areq);
+
 static int stm32_hash_handle_queue(struct stm32_hash_dev *hdev,
 				   struct ahash_request *req)
 {
-	return crypto_transfer_hash_request_to_engine(hdev->engine, req);
+	return crypto_transfer_request_to_engine(hdev->engine, &req->base);
 }
 
 static int stm32_hash_prepare_req(struct crypto_engine *engine,
-				  struct ahash_request *req)
+				  struct crypto_async_request *areq)
 {
+	struct ahash_request *req = ahash_request_cast(areq);
 	struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
 	struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
 	struct stm32_hash_request_ctx *rctx;
@@ -855,8 +862,9 @@ static int stm32_hash_prepare_req(struct crypto_engine
*engine,
 }
 
 static int stm32_hash_one_request(struct crypto_engine *engine,
-				  struct ahash_request *req)
+				  struct crypto_async_request *areq)
 {
+	struct ahash_request *req = ahash_request_cast(areq);
 	struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
 	struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
 	struct stm32_hash_request_ctx *rctx;
@@ -1033,6 +1041,9 @@ static int stm32_hash_cra_init_algs(struct crypto_tfm
*tfm,
 	if (algs_hmac_name)
 		ctx->flags |= HASH_FLAGS_HMAC;
 
+	ctx->enginectx.op.do_one_request = stm32_hash_one_request;
+	ctx->enginectx.op.prepare_request = stm32_hash_prepare_req;
+	ctx->enginectx.op.unprepare_request = NULL;
 	return 0;
 }
 
@@ -1493,9 +1504,6 @@ static int stm32_hash_probe(struct platform_device *pdev)
 		goto err_engine;
 	}
 
-	hdev->engine->prepare_hash_request = stm32_hash_prepare_req;
-	hdev->engine->hash_one_request = stm32_hash_one_request;
-
 	ret = crypto_engine_start(hdev->engine);
 	if (ret)
 		goto err_engine_start;
-- 
2.13.6

Fabien DESSENNE

2017-Dec-06 10:59 UTC

head link

[PATCH RFC 0/4] crypto: engine - Permit to enqueue all async requests

Hi Corentin,


I am fine with this proposal: it is generic enough and I have been able 
to test and run the crypto engine with aead_request without changing any 
single line of code.

This is what I need to be able to send the AEAD extension of the 
stm32-cryp driver (successfully tested with your engine upgrade proposal).


I have also tested the stm32-hash patch.

Note that stm32-cryp (new driver applied by Herbert recently 
[https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=9e054ec21ef8344345b28603fb272fe999f735db])
would also need to be converted to the new crypto engine API : this is a 
trivial patch.

Thank you for your proposal, I hope that this proposal is fine for 
Herbert too.

BR


Fabien


On 29/11/17 09:41, Corentin Labbe wrote:> Hello
>
> The current crypto_engine support only ahash and ablkcipher.
> My first patch which try to add skcipher was Nacked, it will add too many
functions
> and adding other algs(aead, asymetric_key) will make the situation worst.
>
> This patchset remove all algs specific stuff and now only process generic
crypto_async_request.
>
> The requests handler function pointer are now moved out of struct engine
and
> are now stored directly in a crypto_engine_reqctx.
>
> The original proposal of Herbert [1] cannot be done completly since the
crypto_engine
> could only dequeue crypto_async_request and it is impossible to access any
request_ctx
> without knowing the underlying request type.
>
> So I do something near that was requested: adding crypto_engine_reqctx in
TFM context.
> Note that the current implementation expect that crypto_engine_reqctx
> is the first member of the context.
>
> The first patch convert the crypto engine with the new way,
> while the following patchs convert the 3 existing users of crypto_engine.
> Note that this split break bisection, so probably the final commit will be
all merged.
>
> The 3 latest patch were compile tested only, but the first is tested
successfully
> with my new sun8i-ce driver.
>
> Regards
>
> [1] https://www.mail-archive.com/linux-kernel at
vger.kernel.org/msg1474434.html
>
> Corentin Labbe (4):
>    crypto: engine - Permit to enqueue all async requests
>    crypto: omap: convert to new crypto engine API
>    crypto: virtio: convert to new crypto engine API
>    crypto: stm32: convert to the new crypto engine API
>
>   crypto/crypto_engine.c                       | 188
++++++---------------------
>   drivers/crypto/omap-aes.c                    |  21 ++-
>   drivers/crypto/omap-aes.h                    |   3 +
>   drivers/crypto/omap-des.c                    |  24 +++-
>   drivers/crypto/stm32/stm32-hash.c            |  22 +++-
>   drivers/crypto/virtio/virtio_crypto_algs.c   |  15 ++-
>   drivers/crypto/virtio/virtio_crypto_common.h |   2 +-
>   drivers/crypto/virtio/virtio_crypto_core.c   |   3 -
>   include/crypto/engine.h                      |  46 +++----
>   9 files changed, 122 insertions(+), 202 deletions(-)
>

Fabien DESSENNE

2017-Dec-06 11:02 UTC

head link

[PATCH RFC 1/4] crypto: engine - Permit to enqueue all async requests

On 29/11/17 09:41, Corentin Labbe wrote:> The crypto engine could actually only enqueue hash and ablkcipher request.
> This patch permit it to enqueue any type of crypto_async_request.
>
> Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
> ---
>   crypto/crypto_engine.c  | 188
+++++++++++-------------------------------------
>   include/crypto/engine.h |  46 +++++-------
>   2 files changed, 60 insertions(+), 174 deletions(-)
>
> diff --git a/crypto/crypto_engine.c b/crypto/crypto_engine.c
> index 61e7c4e02fd2..f7c4c4c1f41b 100644
> --- a/crypto/crypto_engine.c
> +++ b/crypto/crypto_engine.c
> @@ -34,11 +34,10 @@ static void crypto_pump_requests(struct crypto_engine
*engine,
>   				 bool in_kthread)
>   {
>   	struct crypto_async_request *async_req, *backlog;
> -	struct ahash_request *hreq;
> -	struct ablkcipher_request *breq;
>   	unsigned long flags;
>   	bool was_busy = false;
> -	int ret, rtype;
> +	int ret;
> +	struct crypto_engine_reqctx *enginectx;
>   
>   	spin_lock_irqsave(&engine->queue_lock, flags);
>   
> @@ -94,7 +93,6 @@ static void crypto_pump_requests(struct crypto_engine
*engine,
>   
>   	spin_unlock_irqrestore(&engine->queue_lock, flags);
>   
> -	rtype = crypto_tfm_alg_type(engine->cur_req->tfm);
>   	/* Until here we get the request need to be encrypted successfully */
>   	if (!was_busy && engine->prepare_crypt_hardware) {
>   		ret = engine->prepare_crypt_hardware(engine);
> @@ -104,57 +102,31 @@ static void crypto_pump_requests(struct crypto_engine
*engine,
>   		}
>   	}
>   
> -	switch (rtype) {
> -	case CRYPTO_ALG_TYPE_AHASH:
> -		hreq = ahash_request_cast(engine->cur_req);
> -		if (engine->prepare_hash_request) {
> -			ret = engine->prepare_hash_request(engine, hreq);
> -			if (ret) {
> -				dev_err(engine->dev, "failed to prepare request: %d\n",
> -					ret);
> -				goto req_err;
> -			}
> -			engine->cur_req_prepared = true;
> -		}
> -		ret = engine->hash_one_request(engine, hreq);
> -		if (ret) {
> -			dev_err(engine->dev, "failed to hash one request from
queue\n");
> -			goto req_err;
> -		}
> -		return;
> -	case CRYPTO_ALG_TYPE_ABLKCIPHER:
> -		breq = ablkcipher_request_cast(engine->cur_req);
> -		if (engine->prepare_cipher_request) {
> -			ret = engine->prepare_cipher_request(engine, breq);
> -			if (ret) {
> -				dev_err(engine->dev, "failed to prepare request: %d\n",
> -					ret);
> -				goto req_err;
> -			}
> -			engine->cur_req_prepared = true;
> -		}
> -		ret = engine->cipher_one_request(engine, breq);
> +	enginectx = crypto_tfm_ctx(async_req->tfm);
> +
> +	if (enginectx->op.prepare_request) {
> +		ret = enginectx->op.prepare_request(engine, async_req);
>   		if (ret) {
> -			dev_err(engine->dev, "failed to cipher one request from
queue\n");
> +			dev_err(engine->dev, "failed to prepare request: %d\n",
> +				ret);
>   			goto req_err;
>   		}
> -		return;
> -	default:
> -		dev_err(engine->dev, "failed to prepare request of unknown
type\n");
> -		return;
> +		engine->cur_req_prepared = true;
> +	}
> +	if (!enginectx->op.do_one_request) {
> +		dev_err(engine->dev, "failed to do request\n");
> +		ret = -EINVAL;
> +		goto req_err;
> +	}
> +	ret = enginectx->op.do_one_request(engine, async_req);
> +	if (ret) {
> +		dev_err(engine->dev, "failed to hash one request from
queue\n");
> +		goto req_err;
>   	}
> +	return;
>   
>   req_err:
> -	switch (rtype) {
> -	case CRYPTO_ALG_TYPE_AHASH:
> -		hreq = ahash_request_cast(engine->cur_req);
> -		crypto_finalize_hash_request(engine, hreq, ret);
> -		break;
> -	case CRYPTO_ALG_TYPE_ABLKCIPHER:
> -		breq = ablkcipher_request_cast(engine->cur_req);
> -		crypto_finalize_cipher_request(engine, breq, ret);
> -		break;
> -	}
> +	crypto_finalize_request(engine, async_req, ret);
>   	return;
>   
>   out:
> @@ -170,59 +142,16 @@ static void crypto_pump_work(struct kthread_work
*work)
>   }
>   
>   /**
> - * crypto_transfer_cipher_request - transfer the new request into the
> - * enginequeue
> + * crypto_transfer_request - transfer the new request into the engine
queue
>    * @engine: the hardware engine
>    * @req: the request need to be listed into the engine queue
>    */
> -int crypto_transfer_cipher_request(struct crypto_engine *engine,
> -				   struct ablkcipher_request *req,
> -				   bool need_pump)
> +int crypto_transfer_request(struct crypto_engine *engine,
> +			    struct crypto_async_request *req, bool need_pump)
>   {
>   	unsigned long flags;
>   	int ret;
>   
> -	spin_lock_irqsave(&engine->queue_lock, flags);
> -
> -	if (!engine->running) {
> -		spin_unlock_irqrestore(&engine->queue_lock, flags);
> -		return -ESHUTDOWN;
> -	}
> -
> -	ret = ablkcipher_enqueue_request(&engine->queue, req);
> -
> -	if (!engine->busy && need_pump)
> -		kthread_queue_work(engine->kworker, &engine->pump_requests);
> -
> -	spin_unlock_irqrestore(&engine->queue_lock, flags);
> -	return ret;
> -}
> -EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request);
> -
> -/**
> - * crypto_transfer_cipher_request_to_engine - transfer one request to list
> - * into the engine queue
> - * @engine: the hardware engine
> - * @req: the request need to be listed into the engine queue
> - */
> -int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine,
> -					     struct ablkcipher_request *req)
> -{
> -	return crypto_transfer_cipher_request(engine, req, true);
> -}
> -EXPORT_SYMBOL_GPL(crypto_transfer_cipher_request_to_engine);
> -
> -/**
> - * crypto_transfer_hash_request - transfer the new request into the
> - * enginequeue
> - * @engine: the hardware engine
> - * @req: the request need to be listed into the engine queue
> - */
> -int crypto_transfer_hash_request(struct crypto_engine *engine,
> -				 struct ahash_request *req, bool need_pump)
> -{
> -	unsigned long flags;
> -	int ret;
>   
>   	spin_lock_irqsave(&engine->queue_lock, flags);
>   
> @@ -231,7 +160,7 @@ int crypto_transfer_hash_request(struct crypto_engine
*engine,
>   		return -ESHUTDOWN;
>   	}
>   
> -	ret = ahash_enqueue_request(&engine->queue, req);
> +	ret = crypto_enqueue_request(&engine->queue, req);
>   
>   	if (!engine->busy && need_pump)
>   		kthread_queue_work(engine->kworker, &engine->pump_requests);
> @@ -239,80 +168,45 @@ int crypto_transfer_hash_request(struct crypto_engine
*engine,
>   	spin_unlock_irqrestore(&engine->queue_lock, flags);
>   	return ret;
>   }
> -EXPORT_SYMBOL_GPL(crypto_transfer_hash_request);
> +EXPORT_SYMBOL_GPL(crypto_transfer_request);
>   
>   /**
> - * crypto_transfer_hash_request_to_engine - transfer one request to list
> + * crypto_transfer_request_to_engine - transfer one request to list
>    * into the engine queue
>    * @engine: the hardware engine
>    * @req: the request need to be listed into the engine queue
>    */
> -int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
> -					   struct ahash_request *req)
> -{
> -	return crypto_transfer_hash_request(engine, req, true);
> -}
> -EXPORT_SYMBOL_GPL(crypto_transfer_hash_request_to_engine);
> -
> -/**
> - * crypto_finalize_cipher_request - finalize one request if the request is
done
> - * @engine: the hardware engine
> - * @req: the request need to be finalized
> - * @err: error number
> - */
> -void crypto_finalize_cipher_request(struct crypto_engine *engine,
> -				    struct ablkcipher_request *req, int err)
> +int crypto_transfer_request_to_engine(struct crypto_engine *engine,
> +				      struct crypto_async_request *req)
>   {
> -	unsigned long flags;
> -	bool finalize_cur_req = false;
> -	int ret;
> -
> -	spin_lock_irqsave(&engine->queue_lock, flags);
> -	if (engine->cur_req == &req->base)
> -		finalize_cur_req = true;
> -	spin_unlock_irqrestore(&engine->queue_lock, flags);
> -
> -	if (finalize_cur_req) {
> -		if (engine->cur_req_prepared &&
> -		    engine->unprepare_cipher_request) {
> -			ret = engine->unprepare_cipher_request(engine, req);
> -			if (ret)
> -				dev_err(engine->dev, "failed to unprepare request\n");
> -		}
> -		spin_lock_irqsave(&engine->queue_lock, flags);
> -		engine->cur_req = NULL;
> -		engine->cur_req_prepared = false;
> -		spin_unlock_irqrestore(&engine->queue_lock, flags);
> -	}
> -
> -	req->base.complete(&req->base, err);
> -
> -	kthread_queue_work(engine->kworker, &engine->pump_requests);
> +	return crypto_transfer_request(engine, req, true);
>   }
> -EXPORT_SYMBOL_GPL(crypto_finalize_cipher_request);
> +EXPORT_SYMBOL_GPL(crypto_transfer_request_to_engine);
>   
>   /**
> - * crypto_finalize_hash_request - finalize one request if the request is
done
> + * crypto_finalize_request - finalize one request if the request is done
>    * @engine: the hardware engine
>    * @req: the request need to be finalized
>    * @err: error number
>    */
> -void crypto_finalize_hash_request(struct crypto_engine *engine,
> -				  struct ahash_request *req, int err)
> +void crypto_finalize_request(struct crypto_engine *engine,
> +			     struct crypto_async_request *req, int err)
>   {
>   	unsigned long flags;
>   	bool finalize_cur_req = false;
>   	int ret;
> +	struct crypto_engine_reqctx *enginectx;
>   
>   	spin_lock_irqsave(&engine->queue_lock, flags);
> -	if (engine->cur_req == &req->base)
> +	if (engine->cur_req == req)
>   		finalize_cur_req = true;
>   	spin_unlock_irqrestore(&engine->queue_lock, flags);
>   
>   	if (finalize_cur_req) {
> +		enginectx = crypto_tfm_ctx(req->tfm);
>   		if (engine->cur_req_prepared &&
> -		    engine->unprepare_hash_request) {
> -			ret = engine->unprepare_hash_request(engine, req);
> +		    enginectx->op.unprepare_request) {
> +			ret = enginectx->op.unprepare_request(engine, req);
>   			if (ret)
>   				dev_err(engine->dev, "failed to unprepare request\n");
>   		}
> @@ -322,11 +216,11 @@ void crypto_finalize_hash_request(struct
crypto_engine *engine,
>   		spin_unlock_irqrestore(&engine->queue_lock, flags);
>   	}
>   
> -	req->base.complete(&req->base, err);
> +	req->complete(req, err);
>   
>   	kthread_queue_work(engine->kworker, &engine->pump_requests);
>   }
> -EXPORT_SYMBOL_GPL(crypto_finalize_hash_request);
> +EXPORT_SYMBOL_GPL(crypto_finalize_request);
>   
>   /**
>    * crypto_engine_start - start the hardware engine
> diff --git a/include/crypto/engine.h b/include/crypto/engine.h
> index dd04c1699b51..2e45db45849b 100644
> --- a/include/crypto/engine.h
> +++ b/include/crypto/engine.h
> @@ -17,7 +17,6 @@
>   #include <linux/kernel.h>
>   #include <linux/kthread.h>
>   #include <crypto/algapi.h>
> -#include <crypto/hash.h>
>   
>   #define ENGINE_NAME_LEN	30
>   /*
> @@ -65,19 +64,6 @@ struct crypto_engine {
You also need to remove these 6 functions from the comment header of 
that structure
>   	int (*prepare_crypt_hardware)(struct crypto_engine *engine);
>   	int (*unprepare_crypt_hardware)(struct crypto_engine *engine);
>   
> -	int (*prepare_cipher_request)(struct crypto_engine *engine,
> -				      struct ablkcipher_request *req);
> -	int (*unprepare_cipher_request)(struct crypto_engine *engine,
> -					struct ablkcipher_request *req);
> -	int (*prepare_hash_request)(struct crypto_engine *engine,
> -				    struct ahash_request *req);
> -	int (*unprepare_hash_request)(struct crypto_engine *engine,
> -				      struct ahash_request *req);
> -	int (*cipher_one_request)(struct crypto_engine *engine,
> -				  struct ablkcipher_request *req);
> -	int (*hash_one_request)(struct crypto_engine *engine,
> -				struct ahash_request *req);
> -
>   	struct kthread_worker           *kworker;
>   	struct kthread_work             pump_requests;
>   
> @@ -85,19 +71,25 @@ struct crypto_engine {
>   	struct crypto_async_request	*cur_req;
>   };
>   
> -int crypto_transfer_cipher_request(struct crypto_engine *engine,
> -				   struct ablkcipher_request *req,
> -				   bool need_pump);
> -int crypto_transfer_cipher_request_to_engine(struct crypto_engine *engine,
> -					     struct ablkcipher_request *req);
> -int crypto_transfer_hash_request(struct crypto_engine *engine,
> -				 struct ahash_request *req, bool need_pump);
> -int crypto_transfer_hash_request_to_engine(struct crypto_engine *engine,
> -					   struct ahash_request *req);
> -void crypto_finalize_cipher_request(struct crypto_engine *engine,
> -				    struct ablkcipher_request *req, int err);
> -void crypto_finalize_hash_request(struct crypto_engine *engine,
> -				  struct ahash_request *req, int err);
> +struct crypto_engine_op {
> +	int (*prepare_request)(struct crypto_engine *engine,
> +			       struct crypto_async_request *areq);
> +	int (*unprepare_request)(struct crypto_engine *engine,
> +				 struct crypto_async_request *areq);
> +	int (*do_one_request)(struct crypto_engine *engine,
> +			      struct crypto_async_request *areq);
> +};
> +
> +struct crypto_engine_reqctx {
> +	struct crypto_engine_op op;
> +};
> +
> +int crypto_transfer_request(struct crypto_engine *engine,
> +			    struct crypto_async_request *req, bool need_pump);
> +int crypto_transfer_request_to_engine(struct crypto_engine *engine,
> +				      struct crypto_async_request *req);
> +void crypto_finalize_request(struct crypto_engine *engine,
> +			     struct crypto_async_request *req, int err);
>   int crypto_engine_start(struct crypto_engine *engine);
>   int crypto_engine_stop(struct crypto_engine *engine);
>   struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool
rt);

Fabien DESSENNE

2017-Dec-06 11:03 UTC

head link

[PATCH RFC 4/4] crypto: stm32: convert to the new crypto engine API

Hi,


On 29/11/17 09:41, Corentin Labbe wrote:> This patch convert the driver to the new crypto engine API.
>
> Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
Tested-by: Fabien Dessenne <fabien.dessenne at st.com>
> ---
>   drivers/crypto/stm32/stm32-hash.c | 22 +++++++++++++++-------
>   1 file changed, 15 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/crypto/stm32/stm32-hash.c
b/drivers/crypto/stm32/stm32-hash.c
> index 4ca4a264a833..e3f9f7b04ce2 100644
> --- a/drivers/crypto/stm32/stm32-hash.c
> +++ b/drivers/crypto/stm32/stm32-hash.c
> @@ -122,6 +122,7 @@ enum stm32_hash_data_format {
>   #define HASH_DMA_THRESHOLD		50
>   
>   struct stm32_hash_ctx {
> +	struct crypto_engine_reqctx enginectx;
>   	struct stm32_hash_dev	*hdev;
>   	unsigned long		flags;
>   
> @@ -811,7 +812,7 @@ static void stm32_hash_finish_req(struct ahash_request
*req, int err)
>   		rctx->flags |= HASH_FLAGS_ERRORS;
>   	}
>   
> -	crypto_finalize_hash_request(hdev->engine, req, err);
> +	crypto_finalize_request(hdev->engine, &req->base, err);
>   }
>   
>   static int stm32_hash_hw_init(struct stm32_hash_dev *hdev,
> @@ -828,15 +829,21 @@ static int stm32_hash_hw_init(struct stm32_hash_dev
*hdev,
>   	return 0;
>   }
>   
> +static int stm32_hash_one_request(struct crypto_engine *engine,
> +				  struct crypto_async_request *areq);
> +static int stm32_hash_prepare_req(struct crypto_engine *engine,
> +				  struct crypto_async_request *areq);
> +
>   static int stm32_hash_handle_queue(struct stm32_hash_dev *hdev,
>   				   struct ahash_request *req)
>   {
> -	return crypto_transfer_hash_request_to_engine(hdev->engine, req);
> +	return crypto_transfer_request_to_engine(hdev->engine,
&req->base);
>   }
>   
>   static int stm32_hash_prepare_req(struct crypto_engine *engine,
> -				  struct ahash_request *req)
> +				  struct crypto_async_request *areq)
>   {
> +	struct ahash_request *req = ahash_request_cast(areq);
>   	struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
>   	struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
>   	struct stm32_hash_request_ctx *rctx;
> @@ -855,8 +862,9 @@ static int stm32_hash_prepare_req(struct crypto_engine
*engine,
>   }
>   
>   static int stm32_hash_one_request(struct crypto_engine *engine,
> -				  struct ahash_request *req)
> +				  struct crypto_async_request *areq)
>   {
> +	struct ahash_request *req = ahash_request_cast(areq);
>   	struct stm32_hash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req));
>   	struct stm32_hash_dev *hdev = stm32_hash_find_dev(ctx);
>   	struct stm32_hash_request_ctx *rctx;
> @@ -1033,6 +1041,9 @@ static int stm32_hash_cra_init_algs(struct crypto_tfm
*tfm,
>   	if (algs_hmac_name)
>   		ctx->flags |= HASH_FLAGS_HMAC;
>   
> +	ctx->enginectx.op.do_one_request = stm32_hash_one_request;
> +	ctx->enginectx.op.prepare_request = stm32_hash_prepare_req;
> +	ctx->enginectx.op.unprepare_request = NULL;
>   	return 0;
>   }
>   
> @@ -1493,9 +1504,6 @@ static int stm32_hash_probe(struct platform_device
*pdev)
>   		goto err_engine;
>   	}
>   
> -	hdev->engine->prepare_hash_request = stm32_hash_prepare_req;
> -	hdev->engine->hash_one_request = stm32_hash_one_request;
> -
>   	ret = crypto_engine_start(hdev->engine);
>   	if (ret)
>   		goto err_engine_start;

Corentin Labbe

2017-Dec-07 09:37 UTC

head link

[PATCH RFC 0/4] crypto: engine - Permit to enqueue all async requests

On Wed, Dec 06, 2017 at 10:59:47AM +0000, Fabien DESSENNE
wrote:> Hi Corentin,
> 
> 
> I am fine with this proposal: it is generic enough and I have been able 
> to test and run the crypto engine with aead_request without changing any 
> single line of code.
> 
> This is what I need to be able to send the AEAD extension of the 
> stm32-cryp driver (successfully tested with your engine upgrade proposal).
> 
> 
> I have also tested the stm32-hash patch.
> 
> Note that stm32-cryp (new driver applied by Herbert recently 
>
[https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git/commit/?id=9e054ec21ef8344345b28603fb272fe999f735db])
> would also need to be converted to the new crypto engine API : this is a 
> trivial patch.
Yes, patch for converting it is already done.
> 
> Thank you for your proposal, I hope that this proposal is fine for 
> Herbert too.
> 
Thanks for your test, I hope other maintainer will test it also.

Regards
Corentin Labbe

Herbert Xu

2017-Dec-22 06:57 UTC

head link

[PATCH RFC 1/4] crypto: engine - Permit to enqueue all async requests

On Wed, Nov 29, 2017 at 09:41:18AM +0100, Corentin Labbe
wrote:> The crypto engine could actually only enqueue hash and ablkcipher request.
> This patch permit it to enqueue any type of crypto_async_request.
> 
> Signed-off-by: Corentin Labbe <clabbe.montjoie at gmail.com>
This is going the wrong way.  We do not want to expose any of the
base types such as crypto_alg, crypto_async_request to end-users
and that includes drivers.  Only core API code should touch these
base types.

Cheers,
-- 
Email: Herbert Xu <herbert at gondor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt

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