X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=crypto%2Fcryptd.c;h=704c141153236917288ee7a09c12ce8b037754d8;hb=4e46aa083853a84c770e00b03746bdeaf5c5aeff;hp=3ff4e1f0f0328d9acb023628e4233b0b1acd607e;hpb=124b53d020622ffa24e27406f2373d5a3debd0d3;p=safe%2Fjmp%2Flinux-2.6 diff --git a/crypto/cryptd.c b/crypto/cryptd.c index 3ff4e1f..704c141 100644 --- a/crypto/cryptd.c +++ b/crypto/cryptd.c @@ -11,30 +11,37 @@ */ #include +#include +#include +#include #include #include #include -#include #include #include -#include #include #include #include -#include -#define CRYPTD_MAX_QLEN 100 +#define CRYPTD_MAX_CPU_QLEN 100 -struct cryptd_state { - spinlock_t lock; - struct mutex mutex; +struct cryptd_cpu_queue { struct crypto_queue queue; - struct task_struct *task; + struct work_struct work; +}; + +struct cryptd_queue { + struct cryptd_cpu_queue *cpu_queue; }; struct cryptd_instance_ctx { struct crypto_spawn spawn; - struct cryptd_state *state; + struct cryptd_queue *queue; +}; + +struct hashd_instance_ctx { + struct crypto_shash_spawn spawn; + struct cryptd_queue *queue; }; struct cryptd_blkcipher_ctx { @@ -45,12 +52,94 @@ struct cryptd_blkcipher_request_ctx { crypto_completion_t complete; }; +struct cryptd_hash_ctx { + struct crypto_shash *child; +}; + +struct cryptd_hash_request_ctx { + crypto_completion_t complete; + struct shash_desc desc; +}; + +static void cryptd_queue_worker(struct work_struct *work); + +static int cryptd_init_queue(struct cryptd_queue *queue, + unsigned int max_cpu_qlen) +{ + int cpu; + struct cryptd_cpu_queue *cpu_queue; + + queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); + if (!queue->cpu_queue) + return -ENOMEM; + for_each_possible_cpu(cpu) { + cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); + crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); + INIT_WORK(&cpu_queue->work, cryptd_queue_worker); + } + return 0; +} + +static void cryptd_fini_queue(struct cryptd_queue *queue) +{ + int cpu; + struct cryptd_cpu_queue *cpu_queue; + + for_each_possible_cpu(cpu) { + cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); + BUG_ON(cpu_queue->queue.qlen); + } + free_percpu(queue->cpu_queue); +} + +static int cryptd_enqueue_request(struct cryptd_queue *queue, + struct crypto_async_request *request) +{ + int cpu, err; + struct cryptd_cpu_queue *cpu_queue; + + cpu = get_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(); + + return err; +} + +/* Called in workqueue context, do one real cryption work (via + * req->complete) and reschedule itself if there are more work to + * do. */ +static void cryptd_queue_worker(struct work_struct *work) +{ + struct cryptd_cpu_queue *cpu_queue; + struct crypto_async_request *req, *backlog; + + cpu_queue = container_of(work, struct cryptd_cpu_queue, work); + /* Only handle one request at a time to avoid hogging crypto + * workqueue. preempt_disable/enable is used to prevent + * being preempted by cryptd_enqueue_request() */ + preempt_disable(); + backlog = crypto_get_backlog(&cpu_queue->queue); + req = crypto_dequeue_request(&cpu_queue->queue); + preempt_enable(); + + if (!req) + return; + + if (backlog) + backlog->complete(backlog, -EINPROGRESS); + req->complete(req, 0); + + if (cpu_queue->queue.qlen) + queue_work(kcrypto_wq, &cpu_queue->work); +} -static inline struct cryptd_state *cryptd_get_state(struct crypto_tfm *tfm) +static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); - return ictx->state; + return ictx->queue; } static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, @@ -82,10 +171,8 @@ static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, rctx = ablkcipher_request_ctx(req); - if (unlikely(err == -EINPROGRESS)) { - rctx->complete(&req->base, err); - return; - } + if (unlikely(err == -EINPROGRESS)) + goto out; desc.tfm = child; desc.info = req->info; @@ -95,8 +182,9 @@ static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, req->base.complete = rctx->complete; +out: local_bh_disable(); - req->base.complete(&req->base, err); + rctx->complete(&req->base, err); local_bh_enable(); } @@ -123,19 +211,13 @@ static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, { struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); - struct cryptd_state *state = - cryptd_get_state(crypto_ablkcipher_tfm(tfm)); - int err; + struct cryptd_queue *queue; + queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm)); rctx->complete = req->base.complete; req->base.complete = complete; - spin_lock_bh(&state->lock); - err = ablkcipher_enqueue_request(crypto_ablkcipher_alg(tfm), req); - spin_unlock_bh(&state->lock); - - wake_up_process(state->task); - return err; + return cryptd_enqueue_request(queue, &req->base); } static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) @@ -169,42 +251,28 @@ static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); - struct cryptd_state *state = cryptd_get_state(tfm); - int active; - - mutex_lock(&state->mutex); - active = ablkcipher_tfm_in_queue(__crypto_ablkcipher_cast(tfm)); - mutex_unlock(&state->mutex); - - BUG_ON(active); crypto_free_blkcipher(ctx->child); } -static struct crypto_instance *cryptd_alloc_instance(struct crypto_alg *alg, - struct cryptd_state *state) +static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, + unsigned int tail) { + char *p; struct crypto_instance *inst; - struct cryptd_instance_ctx *ctx; int err; - inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); - if (IS_ERR(inst)) - 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, "cryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto out_free_inst; - ctx = crypto_instance_ctx(inst); - err = crypto_init_spawn(&ctx->spawn, alg, inst, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); - if (err) - goto out_free_inst; - - ctx->state = state; - memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); inst->alg.cra_priority = alg->cra_priority + 50; @@ -212,36 +280,50 @@ 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; } -static struct crypto_instance *cryptd_alloc_blkcipher( - struct rtattr **tb, struct cryptd_state *state) +static int cryptd_create_blkcipher(struct crypto_template *tmpl, + struct rtattr **tb, + struct cryptd_queue *queue) { + struct cryptd_instance_ctx *ctx; struct crypto_instance *inst; struct crypto_alg *alg; + int err; alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, - CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); + CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) - return ERR_PTR(PTR_ERR(alg)); + return PTR_ERR(alg); - inst = cryptd_alloc_instance(alg, state); + inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); + err = PTR_ERR(inst); if (IS_ERR(inst)) goto out_put_alg; - inst->alg.cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER | CRYPTO_ALG_ASYNC; + ctx = crypto_instance_ctx(inst); + ctx->queue = queue; + + err = crypto_init_spawn(&ctx->spawn, alg, inst, + CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); + if (err) + goto out_free_inst; + + inst->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; inst->alg.cra_type = &crypto_ablkcipher_type; inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; + inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; + inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); inst->alg.cra_init = cryptd_blkcipher_init_tfm; @@ -251,34 +333,305 @@ static struct crypto_instance *cryptd_alloc_blkcipher( inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; - inst->alg.cra_ablkcipher.queue = &state->queue; + err = crypto_register_instance(tmpl, inst); + if (err) { + crypto_drop_spawn(&ctx->spawn); +out_free_inst: + kfree(inst); + } + +out_put_alg: + crypto_mod_put(alg); + return err; +} + +static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) +{ + struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); + struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); + struct crypto_shash_spawn *spawn = &ictx->spawn; + struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); + struct crypto_shash *hash; + + hash = crypto_spawn_shash(spawn); + if (IS_ERR(hash)) + return PTR_ERR(hash); + + ctx->child = hash; + crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), + sizeof(struct cryptd_hash_request_ctx) + + crypto_shash_descsize(hash)); + return 0; +} + +static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) +{ + struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); + + crypto_free_shash(ctx->child); +} + +static int cryptd_hash_setkey(struct crypto_ahash *parent, + const u8 *key, unsigned int keylen) +{ + struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); + struct crypto_shash *child = ctx->child; + int err; + + crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); + crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & + CRYPTO_TFM_REQ_MASK); + err = crypto_shash_setkey(child, key, keylen); + crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & + CRYPTO_TFM_RES_MASK); + return err; +} + +static int cryptd_hash_enqueue(struct ahash_request *req, + crypto_completion_t complete) +{ + struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); + struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); + struct cryptd_queue *queue = + cryptd_get_queue(crypto_ahash_tfm(tfm)); + + rctx->complete = req->base.complete; + req->base.complete = complete; + + return cryptd_enqueue_request(queue, &req->base); +} + +static void cryptd_hash_init(struct crypto_async_request *req_async, int err) +{ + struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); + struct crypto_shash *child = ctx->child; + struct ahash_request *req = ahash_request_cast(req_async); + struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); + struct shash_desc *desc = &rctx->desc; + + if (unlikely(err == -EINPROGRESS)) + goto out; + + desc->tfm = child; + desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; + + err = crypto_shash_init(desc); + + req->base.complete = rctx->complete; + +out: + local_bh_disable(); + rctx->complete(&req->base, err); + local_bh_enable(); +} + +static int cryptd_hash_init_enqueue(struct ahash_request *req) +{ + return cryptd_hash_enqueue(req, cryptd_hash_init); +} + +static void cryptd_hash_update(struct crypto_async_request *req_async, int err) +{ + struct ahash_request *req = ahash_request_cast(req_async); + struct cryptd_hash_request_ctx *rctx; + + rctx = ahash_request_ctx(req); + + if (unlikely(err == -EINPROGRESS)) + goto out; + + err = shash_ahash_update(req, &rctx->desc); + + req->base.complete = rctx->complete; + +out: + local_bh_disable(); + rctx->complete(&req->base, err); + local_bh_enable(); +} + +static int cryptd_hash_update_enqueue(struct ahash_request *req) +{ + return cryptd_hash_enqueue(req, cryptd_hash_update); +} + +static void cryptd_hash_final(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 = crypto_shash_final(&rctx->desc, req->result); + + req->base.complete = rctx->complete; + +out: + local_bh_disable(); + rctx->complete(&req->base, err); + local_bh_enable(); +} + +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); + struct crypto_shash *child = ctx->child; + struct ahash_request *req = ahash_request_cast(req_async); + struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); + struct shash_desc *desc = &rctx->desc; + + if (unlikely(err == -EINPROGRESS)) + goto out; + + desc->tfm = child; + desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; + + err = shash_ahash_digest(req, desc); + + req->base.complete = rctx->complete; + +out: + local_bh_disable(); + rctx->complete(&req->base, err); + local_bh_enable(); +} + +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 ahash_instance *inst; + struct shash_alg *salg; + struct crypto_alg *alg; + int err; + + salg = shash_attr_alg(tb[1], 0, 0); + if (IS_ERR(salg)) + return PTR_ERR(salg); + + alg = &salg->base; + inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), + sizeof(*ctx)); + err = PTR_ERR(inst); + if (IS_ERR(inst)) + goto out_put_alg; + + ctx = ahash_instance_ctx(inst); + ctx->queue = queue; + + err = crypto_init_shash_spawn(&ctx->spawn, salg, + ahash_crypto_instance(inst)); + if (err) + goto out_free_inst; + + inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC; + + inst->alg.halg.digestsize = salg->digestsize; + inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); + + inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; + inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; + + 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 = ahash_register_instance(tmpl, inst); + if (err) { + crypto_drop_shash(&ctx->spawn); +out_free_inst: + kfree(inst); + } out_put_alg: crypto_mod_put(alg); - return inst; + return err; } -static struct cryptd_state state; +static struct cryptd_queue queue; -static struct crypto_instance *cryptd_alloc(struct rtattr **tb) +static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) { struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) - return ERR_PTR(PTR_ERR(algt)); + return PTR_ERR(algt); switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_BLKCIPHER: - return cryptd_alloc_blkcipher(tb, &state); + return cryptd_create_blkcipher(tmpl, tb, &queue); + case CRYPTO_ALG_TYPE_DIGEST: + return cryptd_create_hash(tmpl, tb, &queue); } - return ERR_PTR(-EINVAL); + return -EINVAL; } 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); @@ -286,85 +639,109 @@ static void cryptd_free(struct crypto_instance *inst) static struct crypto_template cryptd_tmpl = { .name = "cryptd", - .alloc = cryptd_alloc, + .create = cryptd_create, .free = cryptd_free, .module = THIS_MODULE, }; -static inline int cryptd_create_thread(struct cryptd_state *state, - int (*fn)(void *data), const char *name) +struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, + u32 type, u32 mask) { - spin_lock_init(&state->lock); - mutex_init(&state->mutex); - crypto_init_queue(&state->queue, CRYPTD_MAX_QLEN); - - state->task = kthread_create(fn, state, name); - if (IS_ERR(state->task)) - return PTR_ERR(state->task); + char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; + struct crypto_tfm *tfm; + + if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, + "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) + return ERR_PTR(-EINVAL); + type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); + type |= CRYPTO_ALG_TYPE_BLKCIPHER; + mask &= ~CRYPTO_ALG_TYPE_MASK; + mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); + tfm = crypto_alloc_base(cryptd_alg_name, type, mask); + if (IS_ERR(tfm)) + return ERR_CAST(tfm); + if (tfm->__crt_alg->cra_module != THIS_MODULE) { + crypto_free_tfm(tfm); + return ERR_PTR(-EINVAL); + } - return 0; + return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); } +EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); -static inline void cryptd_stop_thread(struct cryptd_state *state) +struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) { - BUG_ON(state->queue.qlen); - kthread_stop(state->task); + struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); + return ctx->child; } +EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); -static int cryptd_thread(void *data) +void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) { - struct cryptd_state *state = data; - int stop; - - do { - struct crypto_async_request *req, *backlog; - - mutex_lock(&state->mutex); - __set_current_state(TASK_INTERRUPTIBLE); + crypto_free_ablkcipher(&tfm->base); +} +EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); - spin_lock_bh(&state->lock); - backlog = crypto_get_backlog(&state->queue); - req = crypto_dequeue_request(&state->queue); - spin_unlock_bh(&state->lock); +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); + } - stop = kthread_should_stop(); + return __cryptd_ahash_cast(tfm); +} +EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); - if (stop || req) { - __set_current_state(TASK_RUNNING); - if (req) { - if (backlog) - backlog->complete(backlog, - -EINPROGRESS); - req->complete(req, 0); - } - } +struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) +{ + struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); - mutex_unlock(&state->mutex); + return ctx->child; +} +EXPORT_SYMBOL_GPL(cryptd_ahash_child); - schedule(); - } while (!stop); +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); - return 0; +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; - err = cryptd_create_thread(&state, cryptd_thread, "cryptd"); + err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); if (err) return err; err = crypto_register_template(&cryptd_tmpl); if (err) - kthread_stop(state.task); + cryptd_fini_queue(&queue); return err; } static void __exit cryptd_exit(void) { - cryptd_stop_thread(&state); + cryptd_fini_queue(&queue); crypto_unregister_template(&cryptd_tmpl); }