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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> * |
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* Added AEAD support to cryptd. * Authors: Tadeusz Struk (tadeusz.struk@intel.com) * Adrian Hoban <adrian.hoban@intel.com> * Gabriele Paoloni <gabriele.paoloni@intel.com> * Aidan O'Mahony (aidan.o.mahony@intel.com) * Copyright (c) 2010, Intel Corporation. * |
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* 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/internal/aead.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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struct cryptd_cpu_queue { |
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struct crypto_queue queue; |
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struct work_struct work; }; struct cryptd_queue { |
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struct cryptd_cpu_queue __percpu *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 aead_instance_ctx { struct crypto_aead_spawn aead_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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struct cryptd_aead_ctx { struct crypto_aead *child; }; struct cryptd_aead_request_ctx { crypto_completion_t complete; }; |
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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(); |
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cpu_queue = this_cpu_ptr(queue->cpu_queue); |
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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); |
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/* * 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(). local_bh_disable/enable is used to prevent * cryptd_enqueue_request() being accessed from software interrupts. */ local_bh_disable(); |
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preempt_disable(); backlog = crypto_get_backlog(&cpu_queue->queue); req = crypto_dequeue_request(&cpu_queue->queue); preempt_enable(); |
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local_bh_enable(); |
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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, |
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crypto_completion_t compl) |
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{ 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; |
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req->base.complete = compl; |
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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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|
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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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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, |
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crypto_completion_t compl) |
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{ 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; |
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req->base.complete = compl; |
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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); |
b8a28251c [CRYPTO] cryptd: ... |
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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); } |
6fba00d17 crypto: cryptd - ... |
533 534 535 536 537 538 539 540 541 542 543 544 545 |
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); } |
9cd899a32 crypto: cryptd - ... |
546 547 |
static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) |
b8a28251c [CRYPTO] cryptd: ... |
548 |
{ |
46309d893 crypto: cryptd - ... |
549 |
struct hashd_instance_ctx *ctx; |
0b535adfb crypto: cryptd - ... |
550 |
struct ahash_instance *inst; |
46309d893 crypto: cryptd - ... |
551 |
struct shash_alg *salg; |
b8a28251c [CRYPTO] cryptd: ... |
552 |
struct crypto_alg *alg; |
46309d893 crypto: cryptd - ... |
553 |
int err; |
b8a28251c [CRYPTO] cryptd: ... |
554 |
|
46309d893 crypto: cryptd - ... |
555 556 |
salg = shash_attr_alg(tb[1], 0, 0); if (IS_ERR(salg)) |
9cd899a32 crypto: cryptd - ... |
557 |
return PTR_ERR(salg); |
b8a28251c [CRYPTO] cryptd: ... |
558 |
|
46309d893 crypto: cryptd - ... |
559 |
alg = &salg->base; |
0b535adfb crypto: cryptd - ... |
560 561 |
inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), sizeof(*ctx)); |
05ed8758f crypto: cryptd - ... |
562 |
err = PTR_ERR(inst); |
b8a28251c [CRYPTO] cryptd: ... |
563 564 |
if (IS_ERR(inst)) goto out_put_alg; |
0b535adfb crypto: cryptd - ... |
565 |
ctx = ahash_instance_ctx(inst); |
46309d893 crypto: cryptd - ... |
566 |
ctx->queue = queue; |
0b535adfb crypto: cryptd - ... |
567 568 |
err = crypto_init_shash_spawn(&ctx->spawn, salg, ahash_crypto_instance(inst)); |
46309d893 crypto: cryptd - ... |
569 570 |
if (err) goto out_free_inst; |
0b535adfb crypto: cryptd - ... |
571 |
inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC; |
b8a28251c [CRYPTO] cryptd: ... |
572 |
|
0b535adfb crypto: cryptd - ... |
573 574 |
inst->alg.halg.digestsize = salg->digestsize; inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
b8a28251c [CRYPTO] cryptd: ... |
575 |
|
0b535adfb crypto: cryptd - ... |
576 577 |
inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
b8a28251c [CRYPTO] cryptd: ... |
578 |
|
0b535adfb crypto: cryptd - ... |
579 580 581 |
inst->alg.init = cryptd_hash_init_enqueue; inst->alg.update = cryptd_hash_update_enqueue; inst->alg.final = cryptd_hash_final_enqueue; |
6fba00d17 crypto: cryptd - ... |
582 583 584 |
inst->alg.finup = cryptd_hash_finup_enqueue; inst->alg.export = cryptd_hash_export; inst->alg.import = cryptd_hash_import; |
0b535adfb crypto: cryptd - ... |
585 586 |
inst->alg.setkey = cryptd_hash_setkey; inst->alg.digest = cryptd_hash_digest_enqueue; |
b8a28251c [CRYPTO] cryptd: ... |
587 |
|
0b535adfb crypto: cryptd - ... |
588 |
err = ahash_register_instance(tmpl, inst); |
9cd899a32 crypto: cryptd - ... |
589 590 591 592 593 |
if (err) { crypto_drop_shash(&ctx->spawn); out_free_inst: kfree(inst); } |
b8a28251c [CRYPTO] cryptd: ... |
594 595 |
out_put_alg: crypto_mod_put(alg); |
9cd899a32 crypto: cryptd - ... |
596 |
return err; |
b8a28251c [CRYPTO] cryptd: ... |
597 |
} |
298c926c6 crypto: cryptd - ... |
598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 |
static void cryptd_aead_crypt(struct aead_request *req, struct crypto_aead *child, int err, int (*crypt)(struct aead_request *req)) { struct cryptd_aead_request_ctx *rctx; rctx = aead_request_ctx(req); if (unlikely(err == -EINPROGRESS)) goto out; aead_request_set_tfm(req, child); err = crypt( req ); req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) { struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); struct crypto_aead *child = ctx->child; struct aead_request *req; req = container_of(areq, struct aead_request, base); cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->encrypt); } static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) { struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); struct crypto_aead *child = ctx->child; struct aead_request *req; req = container_of(areq, struct aead_request, base); cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->decrypt); } static int cryptd_aead_enqueue(struct aead_request *req, |
3e3dc25fe crypto: Resolve s... |
638 |
crypto_completion_t compl) |
298c926c6 crypto: cryptd - ... |
639 640 641 642 643 644 |
{ struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); struct crypto_aead *tfm = crypto_aead_reqtfm(req); struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); rctx->complete = req->base.complete; |
3e3dc25fe crypto: Resolve s... |
645 |
req->base.complete = compl; |
298c926c6 crypto: cryptd - ... |
646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 |
return cryptd_enqueue_request(queue, &req->base); } static int cryptd_aead_encrypt_enqueue(struct aead_request *req) { return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); } static int cryptd_aead_decrypt_enqueue(struct aead_request *req) { return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); } static int cryptd_aead_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct aead_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_aead_spawn *spawn = &ictx->aead_spawn; struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); struct crypto_aead *cipher; cipher = crypto_spawn_aead(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); crypto_aead_set_flags(cipher, CRYPTO_TFM_REQ_MAY_SLEEP); ctx->child = cipher; tfm->crt_aead.reqsize = sizeof(struct cryptd_aead_request_ctx); return 0; } static void cryptd_aead_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); crypto_free_aead(ctx->child); } static int cryptd_create_aead(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) { struct aead_instance_ctx *ctx; struct crypto_instance *inst; struct crypto_alg *alg; int err; alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_AEAD, CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return PTR_ERR(alg); inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); err = PTR_ERR(inst); if (IS_ERR(inst)) goto out_put_alg; ctx = crypto_instance_ctx(inst); ctx->queue = queue; err = crypto_init_spawn(&ctx->aead_spawn.base, alg, inst, CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); if (err) goto out_free_inst; inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC; inst->alg.cra_type = alg->cra_type; inst->alg.cra_ctxsize = sizeof(struct cryptd_aead_ctx); inst->alg.cra_init = cryptd_aead_init_tfm; inst->alg.cra_exit = cryptd_aead_exit_tfm; inst->alg.cra_aead.setkey = alg->cra_aead.setkey; inst->alg.cra_aead.setauthsize = alg->cra_aead.setauthsize; inst->alg.cra_aead.geniv = alg->cra_aead.geniv; inst->alg.cra_aead.ivsize = alg->cra_aead.ivsize; inst->alg.cra_aead.maxauthsize = alg->cra_aead.maxauthsize; inst->alg.cra_aead.encrypt = cryptd_aead_encrypt_enqueue; inst->alg.cra_aead.decrypt = cryptd_aead_decrypt_enqueue; inst->alg.cra_aead.givencrypt = alg->cra_aead.givencrypt; inst->alg.cra_aead.givdecrypt = alg->cra_aead.givdecrypt; err = crypto_register_instance(tmpl, inst); if (err) { crypto_drop_spawn(&ctx->aead_spawn.base); out_free_inst: kfree(inst); } out_put_alg: crypto_mod_put(alg); return err; } |
254eff771 crypto: cryptd - ... |
735 |
static struct cryptd_queue queue; |
124b53d02 [CRYPTO] cryptd: ... |
736 |
|
9cd899a32 crypto: cryptd - ... |
737 |
static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d02 [CRYPTO] cryptd: ... |
738 739 740 741 742 |
{ struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) |
9cd899a32 crypto: cryptd - ... |
743 |
return PTR_ERR(algt); |
124b53d02 [CRYPTO] cryptd: ... |
744 745 746 |
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_BLKCIPHER: |
9cd899a32 crypto: cryptd - ... |
747 |
return cryptd_create_blkcipher(tmpl, tb, &queue); |
b8a28251c [CRYPTO] cryptd: ... |
748 |
case CRYPTO_ALG_TYPE_DIGEST: |
9cd899a32 crypto: cryptd - ... |
749 |
return cryptd_create_hash(tmpl, tb, &queue); |
298c926c6 crypto: cryptd - ... |
750 751 |
case CRYPTO_ALG_TYPE_AEAD: return cryptd_create_aead(tmpl, tb, &queue); |
124b53d02 [CRYPTO] cryptd: ... |
752 |
} |
9cd899a32 crypto: cryptd - ... |
753 |
return -EINVAL; |
124b53d02 [CRYPTO] cryptd: ... |
754 755 756 757 758 |
} static void cryptd_free(struct crypto_instance *inst) { struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
0b535adfb crypto: cryptd - ... |
759 |
struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
298c926c6 crypto: cryptd - ... |
760 |
struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
0b535adfb crypto: cryptd - ... |
761 762 763 764 765 766 |
switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_AHASH: crypto_drop_shash(&hctx->spawn); kfree(ahash_instance(inst)); return; |
298c926c6 crypto: cryptd - ... |
767 768 769 770 771 772 773 |
case CRYPTO_ALG_TYPE_AEAD: crypto_drop_spawn(&aead_ctx->aead_spawn.base); kfree(inst); return; default: crypto_drop_spawn(&ctx->spawn); kfree(inst); |
0b535adfb crypto: cryptd - ... |
774 |
} |
124b53d02 [CRYPTO] cryptd: ... |
775 776 777 778 |
} static struct crypto_template cryptd_tmpl = { .name = "cryptd", |
9cd899a32 crypto: cryptd - ... |
779 |
.create = cryptd_create, |
124b53d02 [CRYPTO] cryptd: ... |
780 781 782 |
.free = cryptd_free, .module = THIS_MODULE, }; |
1cac2cbc7 crypto: cryptd - ... |
783 784 785 786 |
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 - ... |
787 |
struct crypto_tfm *tfm; |
1cac2cbc7 crypto: cryptd - ... |
788 789 790 791 |
if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) return ERR_PTR(-EINVAL); |
505fd21d6 crypto: cryptd - ... |
792 793 794 795 796 |
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 - ... |
797 798 |
if (IS_ERR(tfm)) return ERR_CAST(tfm); |
505fd21d6 crypto: cryptd - ... |
799 800 |
if (tfm->__crt_alg->cra_module != THIS_MODULE) { crypto_free_tfm(tfm); |
1cac2cbc7 crypto: cryptd - ... |
801 802 |
return ERR_PTR(-EINVAL); } |
505fd21d6 crypto: cryptd - ... |
803 |
return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
1cac2cbc7 crypto: cryptd - ... |
804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 |
} 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 - ... |
819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 |
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); |
0e1227d35 crypto: ghash - A... |
847 848 849 850 851 852 |
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); |
ace136636 crypto: cryptd - ... |
853 854 855 856 857 |
void cryptd_free_ahash(struct cryptd_ahash *tfm) { crypto_free_ahash(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
298c926c6 crypto: cryptd - ... |
858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 |
struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; struct crypto_aead *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_aead(cryptd_alg_name, type, mask); if (IS_ERR(tfm)) return ERR_CAST(tfm); if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { crypto_free_aead(tfm); return ERR_PTR(-EINVAL); } return __cryptd_aead_cast(tfm); } EXPORT_SYMBOL_GPL(cryptd_alloc_aead); struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) { struct cryptd_aead_ctx *ctx; ctx = crypto_aead_ctx(&tfm->base); return ctx->child; } EXPORT_SYMBOL_GPL(cryptd_aead_child); void cryptd_free_aead(struct cryptd_aead *tfm) { crypto_free_aead(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_aead); |
124b53d02 [CRYPTO] cryptd: ... |
891 892 893 |
static int __init cryptd_init(void) { int err; |
254eff771 crypto: cryptd - ... |
894 |
err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
124b53d02 [CRYPTO] cryptd: ... |
895 896 897 898 899 |
if (err) return err; err = crypto_register_template(&cryptd_tmpl); if (err) |
254eff771 crypto: cryptd - ... |
900 |
cryptd_fini_queue(&queue); |
124b53d02 [CRYPTO] cryptd: ... |
901 902 903 904 905 906 |
return err; } static void __exit cryptd_exit(void) { |
254eff771 crypto: cryptd - ... |
907 |
cryptd_fini_queue(&queue); |
124b53d02 [CRYPTO] cryptd: ... |
908 909 |
crypto_unregister_template(&cryptd_tmpl); } |
b2bac6acf crypto: cryptd - ... |
910 |
subsys_initcall(cryptd_init); |
124b53d02 [CRYPTO] cryptd: ... |
911 912 913 914 |
module_exit(cryptd_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Software async crypto daemon"); |
4943ba16b crypto: include c... |
915 |
MODULE_ALIAS_CRYPTO("cryptd"); |