X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fcryptd.c;h=ef71318976c730c109ee2adc15a1f5cc5cabb705;hb=3be2264be3c00865116f997dc53ebcc90fe7fc4b;hp=ad58f513ba8b8d20089f7470e73c8da4859900eb;hpb=9cd899a32f611eb6328014f1d9e0ba31977812d9;p=safe%2Fjmp%2Flinux-2.6

diff --git a/crypto/cryptd.c b/crypto/cryptd.c
index ad58f51..ef71318 100644
--- a/crypto/cryptd.c
+++ b/crypto/cryptd.c
@@ -31,7 +31,7 @@ struct cryptd_cpu_queue {
 };
 
 struct cryptd_queue {
-	struct cryptd_cpu_queue *cpu_queue;
+	struct cryptd_cpu_queue __percpu *cpu_queue;
 };
 
 struct cryptd_instance_ctx {
@@ -99,7 +99,7 @@ static int cryptd_enqueue_request(struct cryptd_queue *queue,
 	struct cryptd_cpu_queue *cpu_queue;
 
 	cpu = get_cpu();
-	cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
+	cpu_queue = this_cpu_ptr(queue->cpu_queue);
 	err = crypto_enqueue_request(&cpu_queue->queue, request);
 	queue_work_on(cpu, kcrypto_wq, &cpu_queue->work);
 	put_cpu();
@@ -255,17 +255,18 @@ static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm)
 	crypto_free_blkcipher(ctx->child);
 }
 
-static struct crypto_instance *cryptd_alloc_instance(struct crypto_alg *alg,
-						     unsigned int tail)
+static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head,
+				   unsigned int tail)
 {
+	char *p;
 	struct crypto_instance *inst;
 	int err;
 
-	inst = kzalloc(sizeof(*inst) + tail, GFP_KERNEL);
-	if (!inst) {
-		inst = ERR_PTR(-ENOMEM);
-		goto out;
-	}
+	p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL);
+	if (!p)
+		return ERR_PTR(-ENOMEM);
+
+	inst = (void *)(p + head);
 
 	err = -ENAMETOOLONG;
 	if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
@@ -279,11 +280,11 @@ static struct crypto_instance *cryptd_alloc_instance(struct crypto_alg *alg,
 	inst->alg.cra_alignmask = alg->cra_alignmask;
 
 out:
-	return inst;
+	return p;
 
 out_free_inst:
-	kfree(inst);
-	inst = ERR_PTR(err);
+	kfree(p);
+	p = ERR_PTR(err);
 	goto out;
 }
 
@@ -301,7 +302,8 @@ static int cryptd_create_blkcipher(struct crypto_template *tmpl,
 	if (IS_ERR(alg))
 		return PTR_ERR(alg);
 
-	inst = cryptd_alloc_instance(alg, sizeof(*ctx));
+	inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx));
+	err = PTR_ERR(inst);
 	if (IS_ERR(inst))
 		goto out_put_alg;
 
@@ -476,6 +478,29 @@ static int cryptd_hash_final_enqueue(struct ahash_request *req)
 	return cryptd_hash_enqueue(req, cryptd_hash_final);
 }
 
+static void cryptd_hash_finup(struct crypto_async_request *req_async, int err)
+{
+	struct ahash_request *req = ahash_request_cast(req_async);
+	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+
+	if (unlikely(err == -EINPROGRESS))
+		goto out;
+
+	err = shash_ahash_finup(req, &rctx->desc);
+
+	req->base.complete = rctx->complete;
+
+out:
+	local_bh_disable();
+	rctx->complete(&req->base, err);
+	local_bh_enable();
+}
+
+static int cryptd_hash_finup_enqueue(struct ahash_request *req)
+{
+	return cryptd_hash_enqueue(req, cryptd_hash_finup);
+}
+
 static void cryptd_hash_digest(struct crypto_async_request *req_async, int err)
 {
 	struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
@@ -505,11 +530,25 @@ static int cryptd_hash_digest_enqueue(struct ahash_request *req)
 	return cryptd_hash_enqueue(req, cryptd_hash_digest);
 }
 
+static int cryptd_hash_export(struct ahash_request *req, void *out)
+{
+	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+
+	return crypto_shash_export(&rctx->desc, out);
+}
+
+static int cryptd_hash_import(struct ahash_request *req, const void *in)
+{
+	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+
+	return crypto_shash_import(&rctx->desc, in);
+}
+
 static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
 			      struct cryptd_queue *queue)
 {
 	struct hashd_instance_ctx *ctx;
-	struct crypto_instance *inst;
+	struct ahash_instance *inst;
 	struct shash_alg *salg;
 	struct crypto_alg *alg;
 	int err;
@@ -519,33 +558,38 @@ static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
 		return PTR_ERR(salg);
 
 	alg = &salg->base;
-	inst = cryptd_alloc_instance(alg, sizeof(*ctx));
+	inst = cryptd_alloc_instance(alg, ahash_instance_headroom(),
+				     sizeof(*ctx));
+	err = PTR_ERR(inst);
 	if (IS_ERR(inst))
 		goto out_put_alg;
 
-	ctx = crypto_instance_ctx(inst);
+	ctx = ahash_instance_ctx(inst);
 	ctx->queue = queue;
 
-	err = crypto_init_shash_spawn(&ctx->spawn, salg, inst);
+	err = crypto_init_shash_spawn(&ctx->spawn, salg,
+				      ahash_crypto_instance(inst));
 	if (err)
 		goto out_free_inst;
 
-	inst->alg.cra_flags = CRYPTO_ALG_TYPE_AHASH | CRYPTO_ALG_ASYNC;
-	inst->alg.cra_type = &crypto_ahash_type;
+	inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC;
 
-	inst->alg.cra_ahash.digestsize = salg->digestsize;
-	inst->alg.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
+	inst->alg.halg.digestsize = salg->digestsize;
+	inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx);
 
-	inst->alg.cra_init = cryptd_hash_init_tfm;
-	inst->alg.cra_exit = cryptd_hash_exit_tfm;
+	inst->alg.halg.base.cra_init = cryptd_hash_init_tfm;
+	inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm;
 
-	inst->alg.cra_ahash.init   = cryptd_hash_init_enqueue;
-	inst->alg.cra_ahash.update = cryptd_hash_update_enqueue;
-	inst->alg.cra_ahash.final  = cryptd_hash_final_enqueue;
-	inst->alg.cra_ahash.setkey = cryptd_hash_setkey;
-	inst->alg.cra_ahash.digest = cryptd_hash_digest_enqueue;
+	inst->alg.init   = cryptd_hash_init_enqueue;
+	inst->alg.update = cryptd_hash_update_enqueue;
+	inst->alg.final  = cryptd_hash_final_enqueue;
+	inst->alg.finup  = cryptd_hash_finup_enqueue;
+	inst->alg.export = cryptd_hash_export;
+	inst->alg.import = cryptd_hash_import;
+	inst->alg.setkey = cryptd_hash_setkey;
+	inst->alg.digest = cryptd_hash_digest_enqueue;
 
-	err = crypto_register_instance(tmpl, inst);
+	err = ahash_register_instance(tmpl, inst);
 	if (err) {
 		crypto_drop_shash(&ctx->spawn);
 out_free_inst:
@@ -580,6 +624,14 @@ static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb)
 static void cryptd_free(struct crypto_instance *inst)
 {
 	struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst);
+	struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst);
+
+	switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) {
+	case CRYPTO_ALG_TYPE_AHASH:
+		crypto_drop_shash(&hctx->spawn);
+		kfree(ahash_instance(inst));
+		return;
+	}
 
 	crypto_drop_spawn(&ctx->spawn);
 	kfree(inst);
@@ -630,6 +682,48 @@ void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm)
 }
 EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher);
 
+struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name,
+					u32 type, u32 mask)
+{
+	char cryptd_alg_name[CRYPTO_MAX_ALG_NAME];
+	struct crypto_ahash *tfm;
+
+	if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME,
+		     "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME)
+		return ERR_PTR(-EINVAL);
+	tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask);
+	if (IS_ERR(tfm))
+		return ERR_CAST(tfm);
+	if (tfm->base.__crt_alg->cra_module != THIS_MODULE) {
+		crypto_free_ahash(tfm);
+		return ERR_PTR(-EINVAL);
+	}
+
+	return __cryptd_ahash_cast(tfm);
+}
+EXPORT_SYMBOL_GPL(cryptd_alloc_ahash);
+
+struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm)
+{
+	struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base);
+
+	return ctx->child;
+}
+EXPORT_SYMBOL_GPL(cryptd_ahash_child);
+
+struct shash_desc *cryptd_shash_desc(struct ahash_request *req)
+{
+	struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
+	return &rctx->desc;
+}
+EXPORT_SYMBOL_GPL(cryptd_shash_desc);
+
+void cryptd_free_ahash(struct cryptd_ahash *tfm)
+{
+	crypto_free_ahash(&tfm->base);
+}
+EXPORT_SYMBOL_GPL(cryptd_free_ahash);
+
 static int __init cryptd_init(void)
 {
 	int err;