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crypto/cryptd.c
36.3 KB
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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. * */ |
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#include <crypto/internal/hash.h> |
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#include <crypto/internal/aead.h> |
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#include <crypto/internal/skcipher.h> |
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#include <crypto/cryptd.h> |
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#include <crypto/crypto_wq.h> |
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#include <linux/atomic.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 1000 |
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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 skcipherd_instance_ctx { struct crypto_skcipher_spawn spawn; struct cryptd_queue *queue; }; |
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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 { |
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atomic_t refcnt; |
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struct crypto_blkcipher *child; }; struct cryptd_blkcipher_request_ctx { crypto_completion_t complete; }; |
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struct cryptd_skcipher_ctx { atomic_t refcnt; struct crypto_skcipher *child; }; struct cryptd_skcipher_request_ctx { crypto_completion_t complete; }; |
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struct cryptd_hash_ctx { |
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atomic_t refcnt; |
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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 { |
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atomic_t refcnt; |
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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; |
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atomic_t *refcnt; bool may_backlog; |
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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); |
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refcnt = crypto_tfm_ctx(request->tfm); may_backlog = request->flags & CRYPTO_TFM_REQ_MAY_BACKLOG; if (err == -EBUSY && !may_backlog) goto out_put_cpu; |
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queue_work_on(cpu, kcrypto_wq, &cpu_queue->work); |
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if (!atomic_read(refcnt)) goto out_put_cpu; |
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atomic_inc(refcnt); out_put_cpu: |
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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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} |
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static inline void cryptd_check_internal(struct rtattr **tb, u32 *type, u32 *mask) { struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) return; |
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*type |= algt->type & CRYPTO_ALG_INTERNAL; *mask |= algt->mask & CRYPTO_ALG_INTERNAL; |
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} |
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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; |
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struct cryptd_blkcipher_ctx *ctx; struct crypto_ablkcipher *tfm; |
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struct blkcipher_desc desc; |
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int refcnt; |
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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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tfm = crypto_ablkcipher_reqtfm(req); ctx = crypto_ablkcipher_ctx(tfm); refcnt = atomic_read(&ctx->refcnt); |
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local_bh_disable(); |
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rctx->complete(&req->base, err); |
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local_bh_enable(); |
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if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) crypto_free_ablkcipher(tfm); |
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} 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 int cryptd_init_instance(struct crypto_instance *inst, struct crypto_alg *alg) { if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) return -ENAMETOOLONG; 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; return 0; } |
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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 = cryptd_init_instance(inst, alg); if (err) |
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goto out_free_inst; |
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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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u32 type = CRYPTO_ALG_TYPE_BLKCIPHER; u32 mask = CRYPTO_ALG_TYPE_MASK; |
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int err; |
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cryptd_check_internal(tb, &type, &mask); alg = crypto_get_attr_alg(tb, 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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type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; if (alg->cra_flags & CRYPTO_ALG_INTERNAL) type |= CRYPTO_ALG_INTERNAL; inst->alg.cra_flags = type; |
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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_skcipher_setkey(struct crypto_skcipher *parent, const u8 *key, unsigned int keylen) { struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(parent); struct crypto_skcipher *child = ctx->child; int err; crypto_skcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); crypto_skcipher_set_flags(child, crypto_skcipher_get_flags(parent) & CRYPTO_TFM_REQ_MASK); err = crypto_skcipher_setkey(child, key, keylen); crypto_skcipher_set_flags(parent, crypto_skcipher_get_flags(child) & CRYPTO_TFM_RES_MASK); return err; } static void cryptd_skcipher_complete(struct skcipher_request *req, int err) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); int refcnt = atomic_read(&ctx->refcnt); local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) crypto_free_skcipher(tfm); } static void cryptd_skcipher_encrypt(struct crypto_async_request *base, int err) { struct skcipher_request *req = skcipher_request_cast(base); struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); struct crypto_skcipher *child = ctx->child; SKCIPHER_REQUEST_ON_STACK(subreq, child); if (unlikely(err == -EINPROGRESS)) goto out; skcipher_request_set_tfm(subreq, child); skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL); skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, req->iv); err = crypto_skcipher_encrypt(subreq); skcipher_request_zero(subreq); req->base.complete = rctx->complete; out: cryptd_skcipher_complete(req, err); } static void cryptd_skcipher_decrypt(struct crypto_async_request *base, int err) { struct skcipher_request *req = skcipher_request_cast(base); struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); struct crypto_skcipher *child = ctx->child; SKCIPHER_REQUEST_ON_STACK(subreq, child); if (unlikely(err == -EINPROGRESS)) goto out; skcipher_request_set_tfm(subreq, child); skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL); skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, req->iv); err = crypto_skcipher_decrypt(subreq); skcipher_request_zero(subreq); req->base.complete = rctx->complete; out: cryptd_skcipher_complete(req, err); } static int cryptd_skcipher_enqueue(struct skcipher_request *req, crypto_completion_t compl) { struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct cryptd_queue *queue; queue = cryptd_get_queue(crypto_skcipher_tfm(tfm)); rctx->complete = req->base.complete; req->base.complete = compl; return cryptd_enqueue_request(queue, &req->base); } static int cryptd_skcipher_encrypt_enqueue(struct skcipher_request *req) { return cryptd_skcipher_enqueue(req, cryptd_skcipher_encrypt); } static int cryptd_skcipher_decrypt_enqueue(struct skcipher_request *req) { return cryptd_skcipher_enqueue(req, cryptd_skcipher_decrypt); } static int cryptd_skcipher_init_tfm(struct crypto_skcipher *tfm) { struct skcipher_instance *inst = skcipher_alg_instance(tfm); struct skcipherd_instance_ctx *ictx = skcipher_instance_ctx(inst); struct crypto_skcipher_spawn *spawn = &ictx->spawn; struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); struct crypto_skcipher *cipher; cipher = crypto_spawn_skcipher(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); ctx->child = cipher; crypto_skcipher_set_reqsize( tfm, sizeof(struct cryptd_skcipher_request_ctx)); return 0; } static void cryptd_skcipher_exit_tfm(struct crypto_skcipher *tfm) { struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); crypto_free_skcipher(ctx->child); } static void cryptd_skcipher_free(struct skcipher_instance *inst) { struct skcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst); crypto_drop_skcipher(&ctx->spawn); } static int cryptd_create_skcipher(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) { struct skcipherd_instance_ctx *ctx; struct skcipher_instance *inst; struct skcipher_alg *alg; const char *name; u32 type; u32 mask; int err; type = 0; mask = CRYPTO_ALG_ASYNC; cryptd_check_internal(tb, &type, &mask); name = crypto_attr_alg_name(tb[1]); if (IS_ERR(name)) return PTR_ERR(name); inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) return -ENOMEM; ctx = skcipher_instance_ctx(inst); ctx->queue = queue; crypto_set_skcipher_spawn(&ctx->spawn, skcipher_crypto_instance(inst)); err = crypto_grab_skcipher(&ctx->spawn, name, type, mask); if (err) goto out_free_inst; alg = crypto_spawn_skcipher_alg(&ctx->spawn); err = cryptd_init_instance(skcipher_crypto_instance(inst), &alg->base); if (err) goto out_drop_skcipher; inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); inst->alg.ivsize = crypto_skcipher_alg_ivsize(alg); inst->alg.chunksize = crypto_skcipher_alg_chunksize(alg); inst->alg.min_keysize = crypto_skcipher_alg_min_keysize(alg); inst->alg.max_keysize = crypto_skcipher_alg_max_keysize(alg); inst->alg.base.cra_ctxsize = sizeof(struct cryptd_skcipher_ctx); inst->alg.init = cryptd_skcipher_init_tfm; inst->alg.exit = cryptd_skcipher_exit_tfm; inst->alg.setkey = cryptd_skcipher_setkey; inst->alg.encrypt = cryptd_skcipher_encrypt_enqueue; inst->alg.decrypt = cryptd_skcipher_decrypt_enqueue; inst->free = cryptd_skcipher_free; err = skcipher_register_instance(tmpl, inst); if (err) { out_drop_skcipher: crypto_drop_skcipher(&ctx->spawn); out_free_inst: kfree(inst); } return err; } |
b8a28251c
|
629 630 631 |
static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
46309d893
|
632 633 |
struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_shash_spawn *spawn = &ictx->spawn; |
b8a28251c
|
634 |
struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
46309d893
|
635 |
struct crypto_shash *hash; |
b8a28251c
|
636 |
|
46309d893
|
637 638 639 |
hash = crypto_spawn_shash(spawn); if (IS_ERR(hash)) return PTR_ERR(hash); |
b8a28251c
|
640 |
|
46309d893
|
641 |
ctx->child = hash; |
0d6669e2b
|
642 643 644 |
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), sizeof(struct cryptd_hash_request_ctx) + crypto_shash_descsize(hash)); |
b8a28251c
|
645 646 647 648 649 650 |
return 0; } static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
b8a28251c
|
651 |
|
46309d893
|
652 |
crypto_free_shash(ctx->child); |
b8a28251c
|
653 654 655 656 657 658 |
} static int cryptd_hash_setkey(struct crypto_ahash *parent, const u8 *key, unsigned int keylen) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); |
46309d893
|
659 |
struct crypto_shash *child = ctx->child; |
b8a28251c
|
660 |
int err; |
46309d893
|
661 662 663 664 665 666 |
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); |
b8a28251c
|
667 668 669 670 |
return err; } static int cryptd_hash_enqueue(struct ahash_request *req, |
3e3dc25fe
|
671 |
crypto_completion_t compl) |
b8a28251c
|
672 673 674 |
{ struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
254eff771
|
675 676 |
struct cryptd_queue *queue = cryptd_get_queue(crypto_ahash_tfm(tfm)); |
b8a28251c
|
677 678 |
rctx->complete = req->base.complete; |
3e3dc25fe
|
679 |
req->base.complete = compl; |
b8a28251c
|
680 |
|
254eff771
|
681 |
return cryptd_enqueue_request(queue, &req->base); |
b8a28251c
|
682 |
} |
81760ea6a
|
683 684 685 686 687 688 689 690 691 692 693 694 695 696 |
static void cryptd_hash_complete(struct ahash_request *req, int err) { struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); int refcnt = atomic_read(&ctx->refcnt); local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) crypto_free_ahash(tfm); } |
b8a28251c
|
697 698 |
static void cryptd_hash_init(struct crypto_async_request *req_async, int err) { |
46309d893
|
699 700 701 702 703 |
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; |
b8a28251c
|
704 705 706 |
if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893
|
707 708 |
desc->tfm = child; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
b8a28251c
|
709 |
|
46309d893
|
710 |
err = crypto_shash_init(desc); |
b8a28251c
|
711 712 713 714 |
req->base.complete = rctx->complete; out: |
81760ea6a
|
715 |
cryptd_hash_complete(req, err); |
b8a28251c
|
716 717 718 719 720 721 722 723 724 |
} 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) { |
46309d893
|
725 |
struct ahash_request *req = ahash_request_cast(req_async); |
b8a28251c
|
726 |
struct cryptd_hash_request_ctx *rctx; |
b8a28251c
|
727 728 729 730 731 |
rctx = ahash_request_ctx(req); if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893
|
732 |
err = shash_ahash_update(req, &rctx->desc); |
b8a28251c
|
733 734 735 736 |
req->base.complete = rctx->complete; out: |
81760ea6a
|
737 |
cryptd_hash_complete(req, err); |
b8a28251c
|
738 739 740 741 742 743 744 745 746 |
} 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) { |
46309d893
|
747 748 |
struct ahash_request *req = ahash_request_cast(req_async); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
b8a28251c
|
749 750 751 |
if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893
|
752 |
err = crypto_shash_final(&rctx->desc, req->result); |
b8a28251c
|
753 754 755 756 |
req->base.complete = rctx->complete; out: |
81760ea6a
|
757 |
cryptd_hash_complete(req, err); |
b8a28251c
|
758 759 760 761 762 763 |
} static int cryptd_hash_final_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_final); } |
6fba00d17
|
764 765 766 767 768 769 770 771 772 773 774 775 776 |
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: |
81760ea6a
|
777 |
cryptd_hash_complete(req, err); |
6fba00d17
|
778 779 780 781 782 783 |
} static int cryptd_hash_finup_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_finup); } |
b8a28251c
|
784 785 |
static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) { |
46309d893
|
786 787 788 789 790 |
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; |
b8a28251c
|
791 792 793 |
if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893
|
794 795 |
desc->tfm = child; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
b8a28251c
|
796 |
|
46309d893
|
797 |
err = shash_ahash_digest(req, desc); |
b8a28251c
|
798 799 800 801 |
req->base.complete = rctx->complete; out: |
81760ea6a
|
802 |
cryptd_hash_complete(req, err); |
b8a28251c
|
803 804 805 806 807 808 |
} static int cryptd_hash_digest_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_digest); } |
6fba00d17
|
809 810 811 812 813 814 815 816 817 |
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) { |
0bd222359
|
818 819 820 821 822 823 |
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); struct shash_desc *desc = cryptd_shash_desc(req); desc->tfm = ctx->child; desc->flags = req->base.flags; |
6fba00d17
|
824 |
|
0bd222359
|
825 |
return crypto_shash_import(desc, in); |
6fba00d17
|
826 |
} |
9cd899a32
|
827 828 |
static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) |
b8a28251c
|
829 |
{ |
46309d893
|
830 |
struct hashd_instance_ctx *ctx; |
0b535adfb
|
831 |
struct ahash_instance *inst; |
46309d893
|
832 |
struct shash_alg *salg; |
b8a28251c
|
833 |
struct crypto_alg *alg; |
466a7b9e3
|
834 835 |
u32 type = 0; u32 mask = 0; |
46309d893
|
836 |
int err; |
b8a28251c
|
837 |
|
466a7b9e3
|
838 839 840 |
cryptd_check_internal(tb, &type, &mask); salg = shash_attr_alg(tb[1], type, mask); |
46309d893
|
841 |
if (IS_ERR(salg)) |
9cd899a32
|
842 |
return PTR_ERR(salg); |
b8a28251c
|
843 |
|
46309d893
|
844 |
alg = &salg->base; |
0b535adfb
|
845 846 |
inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), sizeof(*ctx)); |
05ed8758f
|
847 |
err = PTR_ERR(inst); |
b8a28251c
|
848 849 |
if (IS_ERR(inst)) goto out_put_alg; |
0b535adfb
|
850 |
ctx = ahash_instance_ctx(inst); |
46309d893
|
851 |
ctx->queue = queue; |
0b535adfb
|
852 853 |
err = crypto_init_shash_spawn(&ctx->spawn, salg, ahash_crypto_instance(inst)); |
46309d893
|
854 855 |
if (err) goto out_free_inst; |
466a7b9e3
|
856 857 858 859 |
type = CRYPTO_ALG_ASYNC; if (alg->cra_flags & CRYPTO_ALG_INTERNAL) type |= CRYPTO_ALG_INTERNAL; inst->alg.halg.base.cra_flags = type; |
b8a28251c
|
860 |
|
0b535adfb
|
861 |
inst->alg.halg.digestsize = salg->digestsize; |
1a0783402
|
862 |
inst->alg.halg.statesize = salg->statesize; |
0b535adfb
|
863 |
inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
b8a28251c
|
864 |
|
0b535adfb
|
865 866 |
inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
b8a28251c
|
867 |
|
0b535adfb
|
868 869 870 |
inst->alg.init = cryptd_hash_init_enqueue; inst->alg.update = cryptd_hash_update_enqueue; inst->alg.final = cryptd_hash_final_enqueue; |
6fba00d17
|
871 872 873 |
inst->alg.finup = cryptd_hash_finup_enqueue; inst->alg.export = cryptd_hash_export; inst->alg.import = cryptd_hash_import; |
0b535adfb
|
874 875 |
inst->alg.setkey = cryptd_hash_setkey; inst->alg.digest = cryptd_hash_digest_enqueue; |
b8a28251c
|
876 |
|
0b535adfb
|
877 |
err = ahash_register_instance(tmpl, inst); |
9cd899a32
|
878 879 880 881 882 |
if (err) { crypto_drop_shash(&ctx->spawn); out_free_inst: kfree(inst); } |
b8a28251c
|
883 884 |
out_put_alg: crypto_mod_put(alg); |
9cd899a32
|
885 |
return err; |
b8a28251c
|
886 |
} |
92b9876bd
|
887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 |
static int cryptd_aead_setkey(struct crypto_aead *parent, const u8 *key, unsigned int keylen) { struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); struct crypto_aead *child = ctx->child; return crypto_aead_setkey(child, key, keylen); } static int cryptd_aead_setauthsize(struct crypto_aead *parent, unsigned int authsize) { struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); struct crypto_aead *child = ctx->child; return crypto_aead_setauthsize(child, authsize); } |
298c926c6
|
904 905 906 907 908 909 |
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; |
81760ea6a
|
910 |
struct cryptd_aead_ctx *ctx; |
ec9f2006f
|
911 |
crypto_completion_t compl; |
81760ea6a
|
912 913 |
struct crypto_aead *tfm; int refcnt; |
ec9f2006f
|
914 |
|
298c926c6
|
915 |
rctx = aead_request_ctx(req); |
ec9f2006f
|
916 |
compl = rctx->complete; |
298c926c6
|
917 |
|
31bd44e76
|
918 |
tfm = crypto_aead_reqtfm(req); |
298c926c6
|
919 920 921 922 |
if (unlikely(err == -EINPROGRESS)) goto out; aead_request_set_tfm(req, child); err = crypt( req ); |
81760ea6a
|
923 |
|
298c926c6
|
924 |
out: |
81760ea6a
|
925 926 |
ctx = crypto_aead_ctx(tfm); refcnt = atomic_read(&ctx->refcnt); |
298c926c6
|
927 |
local_bh_disable(); |
ec9f2006f
|
928 |
compl(&req->base, err); |
298c926c6
|
929 |
local_bh_enable(); |
81760ea6a
|
930 931 932 |
if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) crypto_free_aead(tfm); |
298c926c6
|
933 934 935 936 937 938 939 940 941 |
} 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); |
ba3749a71
|
942 |
cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->encrypt); |
298c926c6
|
943 944 945 946 947 948 949 950 951 |
} 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); |
ba3749a71
|
952 |
cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->decrypt); |
298c926c6
|
953 954 955 |
} static int cryptd_aead_enqueue(struct aead_request *req, |
3e3dc25fe
|
956 |
crypto_completion_t compl) |
298c926c6
|
957 958 959 960 961 962 |
{ 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
|
963 |
req->base.complete = compl; |
298c926c6
|
964 965 966 967 968 969 970 971 972 973 974 975 |
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 ); } |
f614e546f
|
976 |
static int cryptd_aead_init_tfm(struct crypto_aead *tfm) |
298c926c6
|
977 |
{ |
f614e546f
|
978 979 |
struct aead_instance *inst = aead_alg_instance(tfm); struct aead_instance_ctx *ictx = aead_instance_ctx(inst); |
298c926c6
|
980 |
struct crypto_aead_spawn *spawn = &ictx->aead_spawn; |
f614e546f
|
981 |
struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
298c926c6
|
982 983 984 985 986 |
struct crypto_aead *cipher; cipher = crypto_spawn_aead(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); |
298c926c6
|
987 |
ctx->child = cipher; |
ec9f2006f
|
988 989 990 |
crypto_aead_set_reqsize( tfm, max((unsigned)sizeof(struct cryptd_aead_request_ctx), crypto_aead_reqsize(cipher))); |
298c926c6
|
991 992 |
return 0; } |
f614e546f
|
993 |
static void cryptd_aead_exit_tfm(struct crypto_aead *tfm) |
298c926c6
|
994 |
{ |
f614e546f
|
995 |
struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
298c926c6
|
996 997 998 999 1000 1001 1002 1003 |
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; |
f614e546f
|
1004 1005 |
struct aead_instance *inst; struct aead_alg *alg; |
9b8c456e0
|
1006 1007 |
const char *name; u32 type = 0; |
ec9f2006f
|
1008 |
u32 mask = CRYPTO_ALG_ASYNC; |
298c926c6
|
1009 |
int err; |
466a7b9e3
|
1010 |
cryptd_check_internal(tb, &type, &mask); |
9b8c456e0
|
1011 1012 1013 |
name = crypto_attr_alg_name(tb[1]); if (IS_ERR(name)) return PTR_ERR(name); |
298c926c6
|
1014 |
|
9b8c456e0
|
1015 1016 1017 |
inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); if (!inst) return -ENOMEM; |
298c926c6
|
1018 |
|
f614e546f
|
1019 |
ctx = aead_instance_ctx(inst); |
298c926c6
|
1020 |
ctx->queue = queue; |
f614e546f
|
1021 |
crypto_set_aead_spawn(&ctx->aead_spawn, aead_crypto_instance(inst)); |
9b8c456e0
|
1022 |
err = crypto_grab_aead(&ctx->aead_spawn, name, type, mask); |
298c926c6
|
1023 1024 |
if (err) goto out_free_inst; |
f614e546f
|
1025 1026 |
alg = crypto_spawn_aead_alg(&ctx->aead_spawn); err = cryptd_init_instance(aead_crypto_instance(inst), &alg->base); |
9b8c456e0
|
1027 1028 |
if (err) goto out_drop_aead; |
f614e546f
|
1029 |
inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
5e4b8c1fc
|
1030 |
(alg->base.cra_flags & CRYPTO_ALG_INTERNAL); |
f614e546f
|
1031 |
inst->alg.base.cra_ctxsize = sizeof(struct cryptd_aead_ctx); |
298c926c6
|
1032 |
|
f614e546f
|
1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 |
inst->alg.ivsize = crypto_aead_alg_ivsize(alg); inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); inst->alg.init = cryptd_aead_init_tfm; inst->alg.exit = cryptd_aead_exit_tfm; inst->alg.setkey = cryptd_aead_setkey; inst->alg.setauthsize = cryptd_aead_setauthsize; inst->alg.encrypt = cryptd_aead_encrypt_enqueue; inst->alg.decrypt = cryptd_aead_decrypt_enqueue; err = aead_register_instance(tmpl, inst); |
298c926c6
|
1044 |
if (err) { |
9b8c456e0
|
1045 1046 |
out_drop_aead: crypto_drop_aead(&ctx->aead_spawn); |
298c926c6
|
1047 1048 1049 |
out_free_inst: kfree(inst); } |
298c926c6
|
1050 1051 |
return err; } |
254eff771
|
1052 |
static struct cryptd_queue queue; |
124b53d02
|
1053 |
|
9cd899a32
|
1054 |
static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d02
|
1055 1056 1057 1058 1059 |
{ struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) |
9cd899a32
|
1060 |
return PTR_ERR(algt); |
124b53d02
|
1061 1062 1063 |
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_BLKCIPHER: |
4e0958d19
|
1064 1065 1066 1067 1068 |
if ((algt->type & CRYPTO_ALG_TYPE_MASK) == CRYPTO_ALG_TYPE_BLKCIPHER) return cryptd_create_blkcipher(tmpl, tb, &queue); return cryptd_create_skcipher(tmpl, tb, &queue); |
b8a28251c
|
1069 |
case CRYPTO_ALG_TYPE_DIGEST: |
9cd899a32
|
1070 |
return cryptd_create_hash(tmpl, tb, &queue); |
298c926c6
|
1071 1072 |
case CRYPTO_ALG_TYPE_AEAD: return cryptd_create_aead(tmpl, tb, &queue); |
124b53d02
|
1073 |
} |
9cd899a32
|
1074 |
return -EINVAL; |
124b53d02
|
1075 1076 1077 1078 1079 |
} static void cryptd_free(struct crypto_instance *inst) { struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
0b535adfb
|
1080 |
struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
298c926c6
|
1081 |
struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
0b535adfb
|
1082 1083 1084 1085 1086 1087 |
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
|
1088 |
case CRYPTO_ALG_TYPE_AEAD: |
f614e546f
|
1089 1090 |
crypto_drop_aead(&aead_ctx->aead_spawn); kfree(aead_instance(inst)); |
298c926c6
|
1091 1092 1093 1094 |
return; default: crypto_drop_spawn(&ctx->spawn); kfree(inst); |
0b535adfb
|
1095 |
} |
124b53d02
|
1096 1097 1098 1099 |
} static struct crypto_template cryptd_tmpl = { .name = "cryptd", |
9cd899a32
|
1100 |
.create = cryptd_create, |
124b53d02
|
1101 1102 1103 |
.free = cryptd_free, .module = THIS_MODULE, }; |
1cac2cbc7
|
1104 1105 1106 1107 |
struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
81760ea6a
|
1108 |
struct cryptd_blkcipher_ctx *ctx; |
505fd21d6
|
1109 |
struct crypto_tfm *tfm; |
1cac2cbc7
|
1110 1111 1112 1113 |
if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) return ERR_PTR(-EINVAL); |
c012a79d0
|
1114 |
type = crypto_skcipher_type(type); |
505fd21d6
|
1115 1116 1117 |
mask &= ~CRYPTO_ALG_TYPE_MASK; mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); tfm = crypto_alloc_base(cryptd_alg_name, type, mask); |
1cac2cbc7
|
1118 1119 |
if (IS_ERR(tfm)) return ERR_CAST(tfm); |
505fd21d6
|
1120 1121 |
if (tfm->__crt_alg->cra_module != THIS_MODULE) { crypto_free_tfm(tfm); |
1cac2cbc7
|
1122 1123 |
return ERR_PTR(-EINVAL); } |
81760ea6a
|
1124 1125 |
ctx = crypto_tfm_ctx(tfm); atomic_set(&ctx->refcnt, 1); |
505fd21d6
|
1126 |
return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
1cac2cbc7
|
1127 1128 1129 1130 1131 1132 1133 1134 1135 |
} 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); |
81760ea6a
|
1136 1137 1138 1139 1140 1141 1142 |
bool cryptd_ablkcipher_queued(struct cryptd_ablkcipher *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); return atomic_read(&ctx->refcnt) - 1; } EXPORT_SYMBOL_GPL(cryptd_ablkcipher_queued); |
1cac2cbc7
|
1143 1144 |
void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) { |
81760ea6a
|
1145 1146 1147 1148 |
struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); if (atomic_dec_and_test(&ctx->refcnt)) crypto_free_ablkcipher(&tfm->base); |
1cac2cbc7
|
1149 1150 |
} EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); |
4e0958d19
|
1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 |
struct cryptd_skcipher *cryptd_alloc_skcipher(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; struct cryptd_skcipher_ctx *ctx; struct crypto_skcipher *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_skcipher(cryptd_alg_name, type, mask); if (IS_ERR(tfm)) return ERR_CAST(tfm); if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { crypto_free_skcipher(tfm); return ERR_PTR(-EINVAL); } ctx = crypto_skcipher_ctx(tfm); atomic_set(&ctx->refcnt, 1); return container_of(tfm, struct cryptd_skcipher, base); } EXPORT_SYMBOL_GPL(cryptd_alloc_skcipher); struct crypto_skcipher *cryptd_skcipher_child(struct cryptd_skcipher *tfm) { struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); return ctx->child; } EXPORT_SYMBOL_GPL(cryptd_skcipher_child); bool cryptd_skcipher_queued(struct cryptd_skcipher *tfm) { struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); return atomic_read(&ctx->refcnt) - 1; } EXPORT_SYMBOL_GPL(cryptd_skcipher_queued); void cryptd_free_skcipher(struct cryptd_skcipher *tfm) { struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); if (atomic_dec_and_test(&ctx->refcnt)) crypto_free_skcipher(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_skcipher); |
ace136636
|
1202 1203 1204 1205 |
struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
81760ea6a
|
1206 |
struct cryptd_hash_ctx *ctx; |
ace136636
|
1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 |
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); } |
81760ea6a
|
1219 1220 |
ctx = crypto_ahash_ctx(tfm); atomic_set(&ctx->refcnt, 1); |
ace136636
|
1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 |
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
|
1232 1233 1234 1235 1236 1237 |
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); |
81760ea6a
|
1238 1239 1240 1241 1242 1243 1244 |
bool cryptd_ahash_queued(struct cryptd_ahash *tfm) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); return atomic_read(&ctx->refcnt) - 1; } EXPORT_SYMBOL_GPL(cryptd_ahash_queued); |
ace136636
|
1245 1246 |
void cryptd_free_ahash(struct cryptd_ahash *tfm) { |
81760ea6a
|
1247 1248 1249 1250 |
struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); if (atomic_dec_and_test(&ctx->refcnt)) crypto_free_ahash(&tfm->base); |
ace136636
|
1251 1252 |
} EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
298c926c6
|
1253 1254 1255 1256 |
struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
81760ea6a
|
1257 |
struct cryptd_aead_ctx *ctx; |
298c926c6
|
1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 |
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); } |
81760ea6a
|
1270 1271 1272 |
ctx = crypto_aead_ctx(tfm); atomic_set(&ctx->refcnt, 1); |
298c926c6
|
1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 |
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); |
81760ea6a
|
1284 1285 1286 1287 1288 1289 1290 |
bool cryptd_aead_queued(struct cryptd_aead *tfm) { struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); return atomic_read(&ctx->refcnt) - 1; } EXPORT_SYMBOL_GPL(cryptd_aead_queued); |
298c926c6
|
1291 1292 |
void cryptd_free_aead(struct cryptd_aead *tfm) { |
81760ea6a
|
1293 1294 1295 1296 |
struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); if (atomic_dec_and_test(&ctx->refcnt)) crypto_free_aead(&tfm->base); |
298c926c6
|
1297 1298 |
} EXPORT_SYMBOL_GPL(cryptd_free_aead); |
124b53d02
|
1299 1300 1301 |
static int __init cryptd_init(void) { int err; |
254eff771
|
1302 |
err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
124b53d02
|
1303 1304 1305 1306 1307 |
if (err) return err; err = crypto_register_template(&cryptd_tmpl); if (err) |
254eff771
|
1308 |
cryptd_fini_queue(&queue); |
124b53d02
|
1309 1310 1311 1312 1313 1314 |
return err; } static void __exit cryptd_exit(void) { |
254eff771
|
1315 |
cryptd_fini_queue(&queue); |
124b53d02
|
1316 1317 |
crypto_unregister_template(&cryptd_tmpl); } |
b2bac6acf
|
1318 |
subsys_initcall(cryptd_init); |
124b53d02
|
1319 1320 1321 1322 |
module_exit(cryptd_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Software async crypto daemon"); |
4943ba16b
|
1323 |
MODULE_ALIAS_CRYPTO("cryptd"); |