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![Stephan Mueller](/assets/img/avatar_default.png)
The mcryptd is used as a wrapper around internal ciphers. Therefore, the mcryptd must process the internal cipher by marking mcryptd as internal if the underlying cipher is an internal cipher. Signed-off-by: Stephan Mueller <smueller@chronox.de> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
727 lines
18 KiB
C
727 lines
18 KiB
C
/*
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* Software multibuffer async crypto daemon.
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*
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* Copyright (c) 2014 Tim Chen <tim.c.chen@linux.intel.com>
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*
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* Adapted from crypto daemon.
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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#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/mcryptd.h>
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#include <crypto/crypto_wq.h>
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#include <linux/err.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/list.h>
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#include <linux/module.h>
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#include <linux/scatterlist.h>
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/hardirq.h>
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#define MCRYPTD_MAX_CPU_QLEN 100
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#define MCRYPTD_BATCH 9
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static void *mcryptd_alloc_instance(struct crypto_alg *alg, unsigned int head,
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unsigned int tail);
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struct mcryptd_flush_list {
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struct list_head list;
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struct mutex lock;
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};
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static struct mcryptd_flush_list __percpu *mcryptd_flist;
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struct hashd_instance_ctx {
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struct crypto_shash_spawn spawn;
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struct mcryptd_queue *queue;
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};
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static void mcryptd_queue_worker(struct work_struct *work);
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void mcryptd_arm_flusher(struct mcryptd_alg_cstate *cstate, unsigned long delay)
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{
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struct mcryptd_flush_list *flist;
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if (!cstate->flusher_engaged) {
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/* put the flusher on the flush list */
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flist = per_cpu_ptr(mcryptd_flist, smp_processor_id());
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mutex_lock(&flist->lock);
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list_add_tail(&cstate->flush_list, &flist->list);
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cstate->flusher_engaged = true;
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cstate->next_flush = jiffies + delay;
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queue_delayed_work_on(smp_processor_id(), kcrypto_wq,
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&cstate->flush, delay);
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mutex_unlock(&flist->lock);
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}
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}
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EXPORT_SYMBOL(mcryptd_arm_flusher);
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static int mcryptd_init_queue(struct mcryptd_queue *queue,
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unsigned int max_cpu_qlen)
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{
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int cpu;
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struct mcryptd_cpu_queue *cpu_queue;
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queue->cpu_queue = alloc_percpu(struct mcryptd_cpu_queue);
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pr_debug("mqueue:%p mcryptd_cpu_queue %p\n", queue, queue->cpu_queue);
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if (!queue->cpu_queue)
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return -ENOMEM;
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for_each_possible_cpu(cpu) {
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cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
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pr_debug("cpu_queue #%d %p\n", cpu, queue->cpu_queue);
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crypto_init_queue(&cpu_queue->queue, max_cpu_qlen);
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INIT_WORK(&cpu_queue->work, mcryptd_queue_worker);
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}
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return 0;
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}
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static void mcryptd_fini_queue(struct mcryptd_queue *queue)
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{
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int cpu;
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struct mcryptd_cpu_queue *cpu_queue;
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for_each_possible_cpu(cpu) {
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cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
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BUG_ON(cpu_queue->queue.qlen);
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}
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free_percpu(queue->cpu_queue);
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}
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static int mcryptd_enqueue_request(struct mcryptd_queue *queue,
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struct crypto_async_request *request,
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struct mcryptd_hash_request_ctx *rctx)
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{
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int cpu, err;
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struct mcryptd_cpu_queue *cpu_queue;
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cpu = get_cpu();
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cpu_queue = this_cpu_ptr(queue->cpu_queue);
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rctx->tag.cpu = cpu;
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err = crypto_enqueue_request(&cpu_queue->queue, request);
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pr_debug("enqueue request: cpu %d cpu_queue %p request %p\n",
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cpu, cpu_queue, request);
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queue_work_on(cpu, kcrypto_wq, &cpu_queue->work);
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put_cpu();
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return err;
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}
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/*
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* Try to opportunisticlly flush the partially completed jobs if
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* crypto daemon is the only task running.
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*/
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static void mcryptd_opportunistic_flush(void)
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{
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struct mcryptd_flush_list *flist;
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struct mcryptd_alg_cstate *cstate;
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flist = per_cpu_ptr(mcryptd_flist, smp_processor_id());
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while (single_task_running()) {
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mutex_lock(&flist->lock);
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if (list_empty(&flist->list)) {
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mutex_unlock(&flist->lock);
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return;
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}
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cstate = list_entry(flist->list.next,
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struct mcryptd_alg_cstate, flush_list);
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if (!cstate->flusher_engaged) {
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mutex_unlock(&flist->lock);
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return;
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}
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list_del(&cstate->flush_list);
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cstate->flusher_engaged = false;
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mutex_unlock(&flist->lock);
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cstate->alg_state->flusher(cstate);
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}
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}
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/*
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* Called in workqueue context, do one real cryption work (via
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* req->complete) and reschedule itself if there are more work to
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* do.
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*/
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static void mcryptd_queue_worker(struct work_struct *work)
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{
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struct mcryptd_cpu_queue *cpu_queue;
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struct crypto_async_request *req, *backlog;
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int i;
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/*
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* Need to loop through more than once for multi-buffer to
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* be effective.
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*/
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cpu_queue = container_of(work, struct mcryptd_cpu_queue, work);
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i = 0;
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while (i < MCRYPTD_BATCH || single_task_running()) {
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/*
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* preempt_disable/enable is used to prevent
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* being preempted by mcryptd_enqueue_request()
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*/
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local_bh_disable();
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preempt_disable();
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backlog = crypto_get_backlog(&cpu_queue->queue);
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req = crypto_dequeue_request(&cpu_queue->queue);
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preempt_enable();
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local_bh_enable();
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if (!req) {
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mcryptd_opportunistic_flush();
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return;
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}
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if (backlog)
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backlog->complete(backlog, -EINPROGRESS);
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req->complete(req, 0);
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if (!cpu_queue->queue.qlen)
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return;
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++i;
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}
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if (cpu_queue->queue.qlen)
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queue_work(kcrypto_wq, &cpu_queue->work);
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}
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void mcryptd_flusher(struct work_struct *__work)
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{
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struct mcryptd_alg_cstate *alg_cpu_state;
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struct mcryptd_alg_state *alg_state;
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struct mcryptd_flush_list *flist;
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int cpu;
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cpu = smp_processor_id();
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alg_cpu_state = container_of(to_delayed_work(__work),
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struct mcryptd_alg_cstate, flush);
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alg_state = alg_cpu_state->alg_state;
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if (alg_cpu_state->cpu != cpu)
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pr_debug("mcryptd error: work on cpu %d, should be cpu %d\n",
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cpu, alg_cpu_state->cpu);
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if (alg_cpu_state->flusher_engaged) {
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flist = per_cpu_ptr(mcryptd_flist, cpu);
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mutex_lock(&flist->lock);
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list_del(&alg_cpu_state->flush_list);
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alg_cpu_state->flusher_engaged = false;
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mutex_unlock(&flist->lock);
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alg_state->flusher(alg_cpu_state);
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}
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}
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EXPORT_SYMBOL_GPL(mcryptd_flusher);
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static inline struct mcryptd_queue *mcryptd_get_queue(struct crypto_tfm *tfm)
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{
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struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
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struct mcryptd_instance_ctx *ictx = crypto_instance_ctx(inst);
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return ictx->queue;
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}
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static void *mcryptd_alloc_instance(struct crypto_alg *alg, unsigned int head,
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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);
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if (!p)
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return ERR_PTR(-ENOMEM);
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inst = (void *)(p + head);
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err = -ENAMETOOLONG;
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if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
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"mcryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
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goto out_free_inst;
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memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME);
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inst->alg.cra_priority = alg->cra_priority + 50;
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inst->alg.cra_blocksize = alg->cra_blocksize;
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inst->alg.cra_alignmask = alg->cra_alignmask;
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out:
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return p;
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out_free_inst:
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kfree(p);
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p = ERR_PTR(err);
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goto out;
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}
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static inline void mcryptd_check_internal(struct rtattr **tb, u32 *type,
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u32 *mask)
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{
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struct crypto_attr_type *algt;
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algt = crypto_get_attr_type(tb);
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if (IS_ERR(algt))
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return;
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if ((algt->type & CRYPTO_ALG_INTERNAL))
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*type |= CRYPTO_ALG_INTERNAL;
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if ((algt->mask & CRYPTO_ALG_INTERNAL))
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*mask |= CRYPTO_ALG_INTERNAL;
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}
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static int mcryptd_hash_init_tfm(struct crypto_tfm *tfm)
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{
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struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
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struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst);
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struct crypto_shash_spawn *spawn = &ictx->spawn;
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struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
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struct crypto_shash *hash;
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hash = crypto_spawn_shash(spawn);
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if (IS_ERR(hash))
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return PTR_ERR(hash);
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ctx->child = hash;
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crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
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sizeof(struct mcryptd_hash_request_ctx) +
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crypto_shash_descsize(hash));
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return 0;
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}
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static void mcryptd_hash_exit_tfm(struct crypto_tfm *tfm)
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{
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struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
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crypto_free_shash(ctx->child);
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}
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static int mcryptd_hash_setkey(struct crypto_ahash *parent,
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const u8 *key, unsigned int keylen)
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{
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struct mcryptd_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);
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crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) &
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CRYPTO_TFM_REQ_MASK);
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err = crypto_shash_setkey(child, key, keylen);
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crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) &
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CRYPTO_TFM_RES_MASK);
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return err;
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}
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static int mcryptd_hash_enqueue(struct ahash_request *req,
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crypto_completion_t complete)
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{
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int ret;
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
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struct mcryptd_queue *queue =
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mcryptd_get_queue(crypto_ahash_tfm(tfm));
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rctx->complete = req->base.complete;
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req->base.complete = complete;
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ret = mcryptd_enqueue_request(queue, &req->base, rctx);
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return ret;
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}
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static void mcryptd_hash_init(struct crypto_async_request *req_async, int err)
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{
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struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
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struct crypto_shash *child = ctx->child;
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struct ahash_request *req = ahash_request_cast(req_async);
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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struct shash_desc *desc = &rctx->desc;
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if (unlikely(err == -EINPROGRESS))
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goto out;
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desc->tfm = child;
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desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP;
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err = crypto_shash_init(desc);
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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();
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}
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static int mcryptd_hash_init_enqueue(struct ahash_request *req)
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{
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return mcryptd_hash_enqueue(req, mcryptd_hash_init);
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}
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static void mcryptd_hash_update(struct crypto_async_request *req_async, int err)
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{
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struct ahash_request *req = ahash_request_cast(req_async);
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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if (unlikely(err == -EINPROGRESS))
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goto out;
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err = shash_ahash_mcryptd_update(req, &rctx->desc);
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if (err) {
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req->base.complete = rctx->complete;
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goto out;
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}
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return;
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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();
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}
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static int mcryptd_hash_update_enqueue(struct ahash_request *req)
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{
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return mcryptd_hash_enqueue(req, mcryptd_hash_update);
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}
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static void mcryptd_hash_final(struct crypto_async_request *req_async, int err)
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{
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struct ahash_request *req = ahash_request_cast(req_async);
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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if (unlikely(err == -EINPROGRESS))
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goto out;
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err = shash_ahash_mcryptd_final(req, &rctx->desc);
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if (err) {
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req->base.complete = rctx->complete;
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goto out;
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}
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return;
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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();
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}
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static int mcryptd_hash_final_enqueue(struct ahash_request *req)
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{
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return mcryptd_hash_enqueue(req, mcryptd_hash_final);
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}
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static void mcryptd_hash_finup(struct crypto_async_request *req_async, int err)
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{
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struct ahash_request *req = ahash_request_cast(req_async);
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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if (unlikely(err == -EINPROGRESS))
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goto out;
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err = shash_ahash_mcryptd_finup(req, &rctx->desc);
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if (err) {
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req->base.complete = rctx->complete;
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goto out;
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}
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return;
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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();
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}
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static int mcryptd_hash_finup_enqueue(struct ahash_request *req)
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{
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return mcryptd_hash_enqueue(req, mcryptd_hash_finup);
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}
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static void mcryptd_hash_digest(struct crypto_async_request *req_async, int err)
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{
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struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
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struct crypto_shash *child = ctx->child;
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struct ahash_request *req = ahash_request_cast(req_async);
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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struct shash_desc *desc = &rctx->desc;
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if (unlikely(err == -EINPROGRESS))
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goto out;
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desc->tfm = child;
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desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; /* check this again */
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err = shash_ahash_mcryptd_digest(req, desc);
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if (err) {
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req->base.complete = rctx->complete;
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goto out;
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}
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return;
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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();
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}
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static int mcryptd_hash_digest_enqueue(struct ahash_request *req)
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{
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return mcryptd_hash_enqueue(req, mcryptd_hash_digest);
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}
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static int mcryptd_hash_export(struct ahash_request *req, void *out)
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{
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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return crypto_shash_export(&rctx->desc, out);
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}
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static int mcryptd_hash_import(struct ahash_request *req, const void *in)
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{
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struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
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return crypto_shash_import(&rctx->desc, in);
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}
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static int mcryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
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struct mcryptd_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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u32 type = 0;
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u32 mask = 0;
|
|
int err;
|
|
|
|
mcryptd_check_internal(tb, &type, &mask);
|
|
|
|
salg = shash_attr_alg(tb[1], type, mask);
|
|
if (IS_ERR(salg))
|
|
return PTR_ERR(salg);
|
|
|
|
alg = &salg->base;
|
|
pr_debug("crypto: mcryptd hash alg: %s\n", alg->cra_name);
|
|
inst = mcryptd_alloc_instance(alg, ahash_instance_headroom(),
|
|
sizeof(*ctx));
|
|
err = PTR_ERR(inst);
|
|
if (IS_ERR(inst))
|
|
goto out_put_alg;
|
|
|
|
ctx = ahash_instance_ctx(inst);
|
|
ctx->queue = queue;
|
|
|
|
err = crypto_init_shash_spawn(&ctx->spawn, salg,
|
|
ahash_crypto_instance(inst));
|
|
if (err)
|
|
goto out_free_inst;
|
|
|
|
type = CRYPTO_ALG_ASYNC;
|
|
if (alg->cra_flags & CRYPTO_ALG_INTERNAL)
|
|
type |= CRYPTO_ALG_INTERNAL;
|
|
inst->alg.halg.base.cra_flags = type;
|
|
|
|
inst->alg.halg.digestsize = salg->digestsize;
|
|
inst->alg.halg.base.cra_ctxsize = sizeof(struct mcryptd_hash_ctx);
|
|
|
|
inst->alg.halg.base.cra_init = mcryptd_hash_init_tfm;
|
|
inst->alg.halg.base.cra_exit = mcryptd_hash_exit_tfm;
|
|
|
|
inst->alg.init = mcryptd_hash_init_enqueue;
|
|
inst->alg.update = mcryptd_hash_update_enqueue;
|
|
inst->alg.final = mcryptd_hash_final_enqueue;
|
|
inst->alg.finup = mcryptd_hash_finup_enqueue;
|
|
inst->alg.export = mcryptd_hash_export;
|
|
inst->alg.import = mcryptd_hash_import;
|
|
inst->alg.setkey = mcryptd_hash_setkey;
|
|
inst->alg.digest = mcryptd_hash_digest_enqueue;
|
|
|
|
err = ahash_register_instance(tmpl, inst);
|
|
if (err) {
|
|
crypto_drop_shash(&ctx->spawn);
|
|
out_free_inst:
|
|
kfree(inst);
|
|
}
|
|
|
|
out_put_alg:
|
|
crypto_mod_put(alg);
|
|
return err;
|
|
}
|
|
|
|
static struct mcryptd_queue mqueue;
|
|
|
|
static int mcryptd_create(struct crypto_template *tmpl, struct rtattr **tb)
|
|
{
|
|
struct crypto_attr_type *algt;
|
|
|
|
algt = crypto_get_attr_type(tb);
|
|
if (IS_ERR(algt))
|
|
return PTR_ERR(algt);
|
|
|
|
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
|
|
case CRYPTO_ALG_TYPE_DIGEST:
|
|
return mcryptd_create_hash(tmpl, tb, &mqueue);
|
|
break;
|
|
}
|
|
|
|
return -EINVAL;
|
|
}
|
|
|
|
static void mcryptd_free(struct crypto_instance *inst)
|
|
{
|
|
struct mcryptd_instance_ctx *ctx = crypto_instance_ctx(inst);
|
|
struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst);
|
|
|
|
switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) {
|
|
case CRYPTO_ALG_TYPE_AHASH:
|
|
crypto_drop_shash(&hctx->spawn);
|
|
kfree(ahash_instance(inst));
|
|
return;
|
|
default:
|
|
crypto_drop_spawn(&ctx->spawn);
|
|
kfree(inst);
|
|
}
|
|
}
|
|
|
|
static struct crypto_template mcryptd_tmpl = {
|
|
.name = "mcryptd",
|
|
.create = mcryptd_create,
|
|
.free = mcryptd_free,
|
|
.module = THIS_MODULE,
|
|
};
|
|
|
|
struct mcryptd_ahash *mcryptd_alloc_ahash(const char *alg_name,
|
|
u32 type, u32 mask)
|
|
{
|
|
char mcryptd_alg_name[CRYPTO_MAX_ALG_NAME];
|
|
struct crypto_ahash *tfm;
|
|
|
|
if (snprintf(mcryptd_alg_name, CRYPTO_MAX_ALG_NAME,
|
|
"mcryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME)
|
|
return ERR_PTR(-EINVAL);
|
|
tfm = crypto_alloc_ahash(mcryptd_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 __mcryptd_ahash_cast(tfm);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mcryptd_alloc_ahash);
|
|
|
|
int shash_ahash_mcryptd_digest(struct ahash_request *req,
|
|
struct shash_desc *desc)
|
|
{
|
|
int err;
|
|
|
|
err = crypto_shash_init(desc) ?:
|
|
shash_ahash_mcryptd_finup(req, desc);
|
|
|
|
return err;
|
|
}
|
|
EXPORT_SYMBOL_GPL(shash_ahash_mcryptd_digest);
|
|
|
|
int shash_ahash_mcryptd_update(struct ahash_request *req,
|
|
struct shash_desc *desc)
|
|
{
|
|
struct crypto_shash *tfm = desc->tfm;
|
|
struct shash_alg *shash = crypto_shash_alg(tfm);
|
|
|
|
/* alignment is to be done by multi-buffer crypto algorithm if needed */
|
|
|
|
return shash->update(desc, NULL, 0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(shash_ahash_mcryptd_update);
|
|
|
|
int shash_ahash_mcryptd_finup(struct ahash_request *req,
|
|
struct shash_desc *desc)
|
|
{
|
|
struct crypto_shash *tfm = desc->tfm;
|
|
struct shash_alg *shash = crypto_shash_alg(tfm);
|
|
|
|
/* alignment is to be done by multi-buffer crypto algorithm if needed */
|
|
|
|
return shash->finup(desc, NULL, 0, req->result);
|
|
}
|
|
EXPORT_SYMBOL_GPL(shash_ahash_mcryptd_finup);
|
|
|
|
int shash_ahash_mcryptd_final(struct ahash_request *req,
|
|
struct shash_desc *desc)
|
|
{
|
|
struct crypto_shash *tfm = desc->tfm;
|
|
struct shash_alg *shash = crypto_shash_alg(tfm);
|
|
|
|
/* alignment is to be done by multi-buffer crypto algorithm if needed */
|
|
|
|
return shash->final(desc, req->result);
|
|
}
|
|
EXPORT_SYMBOL_GPL(shash_ahash_mcryptd_final);
|
|
|
|
struct crypto_shash *mcryptd_ahash_child(struct mcryptd_ahash *tfm)
|
|
{
|
|
struct mcryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base);
|
|
|
|
return ctx->child;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mcryptd_ahash_child);
|
|
|
|
struct shash_desc *mcryptd_shash_desc(struct ahash_request *req)
|
|
{
|
|
struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
|
|
return &rctx->desc;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mcryptd_shash_desc);
|
|
|
|
void mcryptd_free_ahash(struct mcryptd_ahash *tfm)
|
|
{
|
|
crypto_free_ahash(&tfm->base);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mcryptd_free_ahash);
|
|
|
|
|
|
static int __init mcryptd_init(void)
|
|
{
|
|
int err, cpu;
|
|
struct mcryptd_flush_list *flist;
|
|
|
|
mcryptd_flist = alloc_percpu(struct mcryptd_flush_list);
|
|
for_each_possible_cpu(cpu) {
|
|
flist = per_cpu_ptr(mcryptd_flist, cpu);
|
|
INIT_LIST_HEAD(&flist->list);
|
|
mutex_init(&flist->lock);
|
|
}
|
|
|
|
err = mcryptd_init_queue(&mqueue, MCRYPTD_MAX_CPU_QLEN);
|
|
if (err) {
|
|
free_percpu(mcryptd_flist);
|
|
return err;
|
|
}
|
|
|
|
err = crypto_register_template(&mcryptd_tmpl);
|
|
if (err) {
|
|
mcryptd_fini_queue(&mqueue);
|
|
free_percpu(mcryptd_flist);
|
|
}
|
|
|
|
return err;
|
|
}
|
|
|
|
static void __exit mcryptd_exit(void)
|
|
{
|
|
mcryptd_fini_queue(&mqueue);
|
|
crypto_unregister_template(&mcryptd_tmpl);
|
|
free_percpu(mcryptd_flist);
|
|
}
|
|
|
|
subsys_initcall(mcryptd_init);
|
|
module_exit(mcryptd_exit);
|
|
|
|
MODULE_LICENSE("GPL");
|
|
MODULE_DESCRIPTION("Software async multibuffer crypto daemon");
|
|
MODULE_ALIAS_CRYPTO("mcryptd");
|