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crypto/cryptd.c
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/* * Software async crypto daemon. * * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> * * This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #include <crypto/algapi.h> |
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#include <crypto/internal/hash.h> |
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#include <crypto/cryptd.h> |
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#include <crypto/crypto_wq.h> |
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#include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> |
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#include <linux/list.h> #include <linux/module.h> |
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#include <linux/scatterlist.h> #include <linux/sched.h> #include <linux/slab.h> |
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#define CRYPTD_MAX_CPU_QLEN 100 |
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|
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struct cryptd_cpu_queue { |
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struct crypto_queue queue; |
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struct work_struct work; }; struct cryptd_queue { struct cryptd_cpu_queue *cpu_queue; |
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}; struct cryptd_instance_ctx { struct crypto_spawn spawn; |
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struct cryptd_queue *queue; |
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}; |
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struct hashd_instance_ctx { struct crypto_shash_spawn spawn; struct cryptd_queue *queue; }; |
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struct cryptd_blkcipher_ctx { struct crypto_blkcipher *child; }; struct cryptd_blkcipher_request_ctx { crypto_completion_t complete; }; |
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struct cryptd_hash_ctx { |
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struct crypto_shash *child; |
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}; struct cryptd_hash_request_ctx { crypto_completion_t complete; |
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struct shash_desc desc; |
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}; |
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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 = per_cpu_ptr(queue->cpu_queue, cpu); 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_queue *cryptd_get_queue(struct crypto_tfm *tfm) |
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{ struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
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return ictx->queue; |
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} static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, const u8 *key, unsigned int keylen) { struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(parent); struct crypto_blkcipher *child = ctx->child; int err; crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); crypto_blkcipher_set_flags(child, crypto_ablkcipher_get_flags(parent) & CRYPTO_TFM_REQ_MASK); err = crypto_blkcipher_setkey(child, key, keylen); crypto_ablkcipher_set_flags(parent, crypto_blkcipher_get_flags(child) & CRYPTO_TFM_RES_MASK); return err; } static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, struct crypto_blkcipher *child, int err, int (*crypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int len)) { struct cryptd_blkcipher_request_ctx *rctx; struct blkcipher_desc desc; rctx = ablkcipher_request_ctx(req); |
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if (unlikely(err == -EINPROGRESS)) goto out; |
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desc.tfm = child; desc.info = req->info; desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; err = crypt(&desc, req->dst, req->src, req->nbytes); req->base.complete = rctx->complete; |
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out: |
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local_bh_disable(); |
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rctx->complete(&req->base, err); |
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local_bh_enable(); } static void cryptd_blkcipher_encrypt(struct crypto_async_request *req, int err) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); struct crypto_blkcipher *child = ctx->child; cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, crypto_blkcipher_crt(child)->encrypt); } static void cryptd_blkcipher_decrypt(struct crypto_async_request *req, int err) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); struct crypto_blkcipher *child = ctx->child; cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, crypto_blkcipher_crt(child)->decrypt); } static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, crypto_completion_t complete) { struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); |
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struct cryptd_queue *queue; |
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queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm)); |
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rctx->complete = req->base.complete; req->base.complete = complete; |
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return cryptd_enqueue_request(queue, &req->base); |
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} static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) { return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_encrypt); } static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request *req) { return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_decrypt); } static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_spawn *spawn = &ictx->spawn; struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); struct crypto_blkcipher *cipher; cipher = crypto_spawn_blkcipher(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); ctx->child = cipher; tfm->crt_ablkcipher.reqsize = sizeof(struct cryptd_blkcipher_request_ctx); return 0; } static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); |
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crypto_free_blkcipher(ctx->child); } |
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static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, unsigned int tail) |
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{ |
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char *p; |
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struct crypto_instance *inst; |
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int err; |
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p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); if (!p) return ERR_PTR(-ENOMEM); inst = (void *)(p + head); |
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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; |
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memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); inst->alg.cra_priority = alg->cra_priority + 50; inst->alg.cra_blocksize = alg->cra_blocksize; inst->alg.cra_alignmask = alg->cra_alignmask; out: |
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return p; |
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out_free_inst: |
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kfree(p); p = ERR_PTR(err); |
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goto out; } |
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static int cryptd_create_blkcipher(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) |
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{ |
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struct cryptd_instance_ctx *ctx; |
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struct crypto_instance *inst; struct crypto_alg *alg; |
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int err; |
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alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, |
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CRYPTO_ALG_TYPE_MASK); |
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if (IS_ERR(alg)) |
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return PTR_ERR(alg); |
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inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
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err = PTR_ERR(inst); |
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if (IS_ERR(inst)) goto out_put_alg; |
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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; |
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inst->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
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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; |
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inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; |
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inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); inst->alg.cra_init = cryptd_blkcipher_init_tfm; inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; |
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err = crypto_register_instance(tmpl, inst); if (err) { crypto_drop_spawn(&ctx->spawn); out_free_inst: kfree(inst); } |
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out_put_alg: crypto_mod_put(alg); |
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return err; |
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} |
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static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
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struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_shash_spawn *spawn = &ictx->spawn; |
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struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
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struct crypto_shash *hash; |
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hash = crypto_spawn_shash(spawn); if (IS_ERR(hash)) return PTR_ERR(hash); |
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ctx->child = hash; |
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crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), sizeof(struct cryptd_hash_request_ctx) + crypto_shash_descsize(hash)); |
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return 0; } static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
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|
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crypto_free_shash(ctx->child); |
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} static int cryptd_hash_setkey(struct crypto_ahash *parent, const u8 *key, unsigned int keylen) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); |
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struct crypto_shash *child = ctx->child; |
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int err; |
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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); |
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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); |
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struct cryptd_queue *queue = cryptd_get_queue(crypto_ahash_tfm(tfm)); |
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rctx->complete = req->base.complete; req->base.complete = complete; |
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return cryptd_enqueue_request(queue, &req->base); |
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} static void cryptd_hash_init(struct crypto_async_request *req_async, int err) { |
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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; |
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if (unlikely(err == -EINPROGRESS)) goto out; |
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desc->tfm = child; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
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|
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err = crypto_shash_init(desc); |
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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) { |
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struct ahash_request *req = ahash_request_cast(req_async); |
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struct cryptd_hash_request_ctx *rctx; |
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rctx = ahash_request_ctx(req); if (unlikely(err == -EINPROGRESS)) goto out; |
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err = shash_ahash_update(req, &rctx->desc); |
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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) { |
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struct ahash_request *req = ahash_request_cast(req_async); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
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if (unlikely(err == -EINPROGRESS)) goto out; |
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err = crypto_shash_final(&rctx->desc, req->result); |
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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); } |
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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); } |
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static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) { |
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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; |
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if (unlikely(err == -EINPROGRESS)) goto out; |
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desc->tfm = child; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
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err = shash_ahash_digest(req, desc); |
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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); } |
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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); } |
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static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) |
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{ |
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struct hashd_instance_ctx *ctx; |
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struct ahash_instance *inst; |
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struct shash_alg *salg; |
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struct crypto_alg *alg; |
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int err; |
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salg = shash_attr_alg(tb[1], 0, 0); if (IS_ERR(salg)) |
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return PTR_ERR(salg); |
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alg = &salg->base; |
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inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), sizeof(*ctx)); |
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err = PTR_ERR(inst); |
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if (IS_ERR(inst)) goto out_put_alg; |
0b535adfb crypto: cryptd - ... |
539 |
ctx = ahash_instance_ctx(inst); |
46309d893 crypto: cryptd - ... |
540 |
ctx->queue = queue; |
0b535adfb crypto: cryptd - ... |
541 542 |
err = crypto_init_shash_spawn(&ctx->spawn, salg, ahash_crypto_instance(inst)); |
46309d893 crypto: cryptd - ... |
543 544 |
if (err) goto out_free_inst; |
0b535adfb crypto: cryptd - ... |
545 |
inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC; |
b8a28251c [CRYPTO] cryptd: ... |
546 |
|
0b535adfb crypto: cryptd - ... |
547 548 |
inst->alg.halg.digestsize = salg->digestsize; inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
b8a28251c [CRYPTO] cryptd: ... |
549 |
|
0b535adfb crypto: cryptd - ... |
550 551 |
inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
b8a28251c [CRYPTO] cryptd: ... |
552 |
|
0b535adfb crypto: cryptd - ... |
553 554 555 |
inst->alg.init = cryptd_hash_init_enqueue; inst->alg.update = cryptd_hash_update_enqueue; inst->alg.final = cryptd_hash_final_enqueue; |
6fba00d17 crypto: cryptd - ... |
556 557 558 |
inst->alg.finup = cryptd_hash_finup_enqueue; inst->alg.export = cryptd_hash_export; inst->alg.import = cryptd_hash_import; |
0b535adfb crypto: cryptd - ... |
559 560 |
inst->alg.setkey = cryptd_hash_setkey; inst->alg.digest = cryptd_hash_digest_enqueue; |
b8a28251c [CRYPTO] cryptd: ... |
561 |
|
0b535adfb crypto: cryptd - ... |
562 |
err = ahash_register_instance(tmpl, inst); |
9cd899a32 crypto: cryptd - ... |
563 564 565 566 567 |
if (err) { crypto_drop_shash(&ctx->spawn); out_free_inst: kfree(inst); } |
b8a28251c [CRYPTO] cryptd: ... |
568 569 |
out_put_alg: crypto_mod_put(alg); |
9cd899a32 crypto: cryptd - ... |
570 |
return err; |
b8a28251c [CRYPTO] cryptd: ... |
571 |
} |
254eff771 crypto: cryptd - ... |
572 |
static struct cryptd_queue queue; |
124b53d02 [CRYPTO] cryptd: ... |
573 |
|
9cd899a32 crypto: cryptd - ... |
574 |
static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d02 [CRYPTO] cryptd: ... |
575 576 577 578 579 |
{ struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) |
9cd899a32 crypto: cryptd - ... |
580 |
return PTR_ERR(algt); |
124b53d02 [CRYPTO] cryptd: ... |
581 582 583 |
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_BLKCIPHER: |
9cd899a32 crypto: cryptd - ... |
584 |
return cryptd_create_blkcipher(tmpl, tb, &queue); |
b8a28251c [CRYPTO] cryptd: ... |
585 |
case CRYPTO_ALG_TYPE_DIGEST: |
9cd899a32 crypto: cryptd - ... |
586 |
return cryptd_create_hash(tmpl, tb, &queue); |
124b53d02 [CRYPTO] cryptd: ... |
587 |
} |
9cd899a32 crypto: cryptd - ... |
588 |
return -EINVAL; |
124b53d02 [CRYPTO] cryptd: ... |
589 590 591 592 593 |
} static void cryptd_free(struct crypto_instance *inst) { struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
0b535adfb crypto: cryptd - ... |
594 595 596 597 598 599 600 601 |
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; } |
124b53d02 [CRYPTO] cryptd: ... |
602 603 604 605 606 607 608 |
crypto_drop_spawn(&ctx->spawn); kfree(inst); } static struct crypto_template cryptd_tmpl = { .name = "cryptd", |
9cd899a32 crypto: cryptd - ... |
609 |
.create = cryptd_create, |
124b53d02 [CRYPTO] cryptd: ... |
610 611 612 |
.free = cryptd_free, .module = THIS_MODULE, }; |
1cac2cbc7 crypto: cryptd - ... |
613 614 615 616 |
struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
505fd21d6 crypto: cryptd - ... |
617 |
struct crypto_tfm *tfm; |
1cac2cbc7 crypto: cryptd - ... |
618 619 620 621 |
if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) return ERR_PTR(-EINVAL); |
505fd21d6 crypto: cryptd - ... |
622 623 624 625 626 |
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); |
1cac2cbc7 crypto: cryptd - ... |
627 628 |
if (IS_ERR(tfm)) return ERR_CAST(tfm); |
505fd21d6 crypto: cryptd - ... |
629 630 |
if (tfm->__crt_alg->cra_module != THIS_MODULE) { crypto_free_tfm(tfm); |
1cac2cbc7 crypto: cryptd - ... |
631 632 |
return ERR_PTR(-EINVAL); } |
505fd21d6 crypto: cryptd - ... |
633 |
return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
1cac2cbc7 crypto: cryptd - ... |
634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 |
} EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); return ctx->child; } EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) { crypto_free_ablkcipher(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); |
ace136636 crypto: cryptd - ... |
649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 |
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); void cryptd_free_ahash(struct cryptd_ahash *tfm) { crypto_free_ahash(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
124b53d02 [CRYPTO] cryptd: ... |
683 684 685 |
static int __init cryptd_init(void) { int err; |
254eff771 crypto: cryptd - ... |
686 |
err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
124b53d02 [CRYPTO] cryptd: ... |
687 688 689 690 691 |
if (err) return err; err = crypto_register_template(&cryptd_tmpl); if (err) |
254eff771 crypto: cryptd - ... |
692 |
cryptd_fini_queue(&queue); |
124b53d02 [CRYPTO] cryptd: ... |
693 694 695 696 697 698 |
return err; } static void __exit cryptd_exit(void) { |
254eff771 crypto: cryptd - ... |
699 |
cryptd_fini_queue(&queue); |
124b53d02 [CRYPTO] cryptd: ... |
700 701 702 703 704 705 706 707 |
crypto_unregister_template(&cryptd_tmpl); } module_init(cryptd_init); module_exit(cryptd_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Software async crypto daemon"); |