Release 4.8 crypto/mcryptd.c

Directory: crypto
/*
 * Software multibuffer async crypto daemon.
 *
 * Copyright (c) 2014 Tim Chen <tim.c.chen@linux.intel.com>
 *
 * Adapted from crypto daemon.
 *
 * 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>
#include <crypto/internal/hash.h>
#include <crypto/internal/aead.h>
#include <crypto/mcryptd.h>
#include <crypto/crypto_wq.h>
#include <linux/err.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/module.h>
#include <linux/scatterlist.h>
#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/hardirq.h>


#define MCRYPTD_MAX_CPU_QLEN 100

#define MCRYPTD_BATCH 9

static void *mcryptd_alloc_instance(struct crypto_alg *alg, unsigned int head,
				   unsigned int tail);


struct mcryptd_flush_list {
	
struct list_head list;
	
struct mutex lock;
};


static struct mcryptd_flush_list __percpu *mcryptd_flist;


struct hashd_instance_ctx {
	
struct crypto_ahash_spawn spawn;
	
struct mcryptd_queue *queue;
};

static void mcryptd_queue_worker(struct work_struct *work);



void mcryptd_arm_flusher(struct mcryptd_alg_cstate *cstate, unsigned long delay)
{
	struct mcryptd_flush_list *flist;

	if (!cstate->flusher_engaged) {
		/* put the flusher on the flush list */
		flist = per_cpu_ptr(mcryptd_flist, smp_processor_id());
		mutex_lock(&flist->lock);
		list_add_tail(&cstate->flush_list, &flist->list);
		cstate->flusher_engaged = true;
		cstate->next_flush = jiffies + delay;
		queue_delayed_work_on(smp_processor_id(), kcrypto_wq,
			&cstate->flush, delay);
		mutex_unlock(&flist->lock);
	}
}
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EXPORT_SYMBOL(mcryptd_arm_flusher);



static int mcryptd_init_queue(struct mcryptd_queue *queue,
			     unsigned int max_cpu_qlen)
{
	int cpu;
	struct mcryptd_cpu_queue *cpu_queue;

	queue->cpu_queue = alloc_percpu(struct mcryptd_cpu_queue);
	pr_debug("mqueue:%p mcryptd_cpu_queue %p\n", queue, queue->cpu_queue);
	if (!queue->cpu_queue)
		return -ENOMEM;
	for_each_possible_cpu(cpu) {
		cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu);
		pr_debug("cpu_queue #%d %p\n", cpu, queue->cpu_queue);
		crypto_init_queue(&cpu_queue->queue, max_cpu_qlen);
		INIT_WORK(&cpu_queue->work, mcryptd_queue_worker);
	}
	return 0;
}

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static void mcryptd_fini_queue(struct mcryptd_queue *queue)
{
	int cpu;
	struct mcryptd_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);
}

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static int mcryptd_enqueue_request(struct mcryptd_queue *queue,
				  struct crypto_async_request *request,
				  struct mcryptd_hash_request_ctx *rctx)
{
	int cpu, err;
	struct mcryptd_cpu_queue *cpu_queue;

	cpu = get_cpu();
	cpu_queue = this_cpu_ptr(queue->cpu_queue);
	rctx->tag.cpu = cpu;

	err = crypto_enqueue_request(&cpu_queue->queue, request);
	pr_debug("enqueue request: cpu %d cpu_queue %p request %p\n",
		 cpu, cpu_queue, request);
	queue_work_on(cpu, kcrypto_wq, &cpu_queue->work);
	put_cpu();

	return err;
}

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/*
 * Try to opportunisticlly flush the partially completed jobs if
 * crypto daemon is the only task running.
 */


static void mcryptd_opportunistic_flush(void)
{
	struct mcryptd_flush_list *flist;
	struct mcryptd_alg_cstate *cstate;

	flist = per_cpu_ptr(mcryptd_flist, smp_processor_id());
	while (single_task_running()) {
		mutex_lock(&flist->lock);
		cstate = list_first_entry_or_null(&flist->list,
				struct mcryptd_alg_cstate, flush_list);
		if (!cstate || !cstate->flusher_engaged) {
			mutex_unlock(&flist->lock);
			return;
		}
		list_del(&cstate->flush_list);
		cstate->flusher_engaged = false;
		mutex_unlock(&flist->lock);
		cstate->alg_state->flusher(cstate);
	}
}

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/*
 * Called in workqueue context, do one real cryption work (via
 * req->complete) and reschedule itself if there are more work to
 * do.
 */


static void mcryptd_queue_worker(struct work_struct *work)
{
	struct mcryptd_cpu_queue *cpu_queue;
	struct crypto_async_request *req, *backlog;
	int i;

	/*
         * Need to loop through more than once for multi-buffer to
         * be effective.
         */

	cpu_queue = container_of(work, struct mcryptd_cpu_queue, work);
	i = 0;
	while (i < MCRYPTD_BATCH || single_task_running()) {
		/*
                 * preempt_disable/enable is used to prevent
                 * being preempted by mcryptd_enqueue_request()
                 */
		local_bh_disable();
		preempt_disable();
		backlog = crypto_get_backlog(&cpu_queue->queue);
		req = crypto_dequeue_request(&cpu_queue->queue);
		preempt_enable();
		local_bh_enable();

		if (!req) {
			mcryptd_opportunistic_flush();
			return;
		}

		if (backlog)
			backlog->complete(backlog, -EINPROGRESS);
		req->complete(req, 0);
		if (!cpu_queue->queue.qlen)
			return;
		++i;
	}
	if (cpu_queue->queue.qlen)
		queue_work(kcrypto_wq, &cpu_queue->work);
}

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void mcryptd_flusher(struct work_struct *__work)
{
	struct	mcryptd_alg_cstate	*alg_cpu_state;
	struct	mcryptd_alg_state	*alg_state;
	struct	mcryptd_flush_list	*flist;
	int	cpu;

	cpu = smp_processor_id();
	alg_cpu_state = container_of(to_delayed_work(__work),
				     struct mcryptd_alg_cstate, flush);
	alg_state = alg_cpu_state->alg_state;
	if (alg_cpu_state->cpu != cpu)
		pr_debug("mcryptd error: work on cpu %d, should be cpu %d\n",
				cpu, alg_cpu_state->cpu);

	if (alg_cpu_state->flusher_engaged) {
		flist = per_cpu_ptr(mcryptd_flist, cpu);
		mutex_lock(&flist->lock);
		list_del(&alg_cpu_state->flush_list);
		alg_cpu_state->flusher_engaged = false;
		mutex_unlock(&flist->lock);
		alg_state->flusher(alg_cpu_state);
	}
}
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EXPORT_SYMBOL_GPL(mcryptd_flusher);



static inline struct mcryptd_queue *mcryptd_get_queue(struct crypto_tfm *tfm)
{
	struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
	struct mcryptd_instance_ctx *ictx = crypto_instance_ctx(inst);

	return ictx->queue;
}

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static void *mcryptd_alloc_instance(struct crypto_alg *alg, unsigned int head,
				   unsigned int tail)
{
	char *p;
	struct crypto_instance *inst;
	int err;

	p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL);
	if (!p)
		return ERR_PTR(-ENOMEM);

	inst = (void *)(p + head);

	err = -ENAMETOOLONG;
	if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
		    "mcryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME)
		goto out_free_inst;

	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:
	return p;

out_free_inst:
	kfree(p);
	p = ERR_PTR(err);
	goto out;
}

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static inline void mcryptd_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;
	if ((algt->type & CRYPTO_ALG_INTERNAL))
		*type |= CRYPTO_ALG_INTERNAL;
	if ((algt->mask & CRYPTO_ALG_INTERNAL))
		*mask |= CRYPTO_ALG_INTERNAL;
}

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static int mcryptd_hash_init_tfm(struct crypto_tfm *tfm)
{
	struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
	struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst);
	struct crypto_ahash_spawn *spawn = &ictx->spawn;
	struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);
	struct crypto_ahash *hash;

	hash = crypto_spawn_ahash(spawn);
	if (IS_ERR(hash))
		return PTR_ERR(hash);

	ctx->child = hash;
	crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
				 sizeof(struct mcryptd_hash_request_ctx) +
				 crypto_ahash_reqsize(hash));
	return 0;
}

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Total 104 100.00% 2 100.00%



static void mcryptd_hash_exit_tfm(struct crypto_tfm *tfm)
{
	struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm);

	crypto_free_ahash(ctx->child);
}

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static int mcryptd_hash_setkey(struct crypto_ahash *parent,
				   const u8 *key, unsigned int keylen)
{
	struct mcryptd_hash_ctx *ctx   = crypto_ahash_ctx(parent);
	struct crypto_ahash *child = ctx->child;
	int err;

	crypto_ahash_clear_flags(child, CRYPTO_TFM_REQ_MASK);
	crypto_ahash_set_flags(child, crypto_ahash_get_flags(parent) &
				      CRYPTO_TFM_REQ_MASK);
	err = crypto_ahash_setkey(child, key, keylen);
	crypto_ahash_set_flags(parent, crypto_ahash_get_flags(child) &
				       CRYPTO_TFM_RES_MASK);
	return err;
}

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static int mcryptd_hash_enqueue(struct ahash_request *req,
				crypto_completion_t complete)
{
	int ret;

	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
	struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
	struct mcryptd_queue *queue =
		mcryptd_get_queue(crypto_ahash_tfm(tfm));

	rctx->complete = req->base.complete;
	req->base.complete = complete;

	ret = mcryptd_enqueue_request(queue, &req->base, rctx);

	return ret;
}

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static void mcryptd_hash_init(struct crypto_async_request *req_async, int err)
{
	struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
	struct crypto_ahash *child = ctx->child;
	struct ahash_request *req = ahash_request_cast(req_async);
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
	struct ahash_request *desc = &rctx->areq;

	if (unlikely(err == -EINPROGRESS))
		goto out;

	ahash_request_set_tfm(desc, child);
	ahash_request_set_callback(desc, CRYPTO_TFM_REQ_MAY_SLEEP,
						rctx->complete, req_async);

	rctx->out = req->result;
	err = crypto_ahash_init(desc);

out:
	local_bh_disable();
	rctx->complete(&req->base, err);
	local_bh_enable();
}

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static int mcryptd_hash_init_enqueue(struct ahash_request *req)
{
	return mcryptd_hash_enqueue(req, mcryptd_hash_init);
}

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static void mcryptd_hash_update(struct crypto_async_request *req_async, int err)
{
	struct ahash_request *req = ahash_request_cast(req_async);
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);

	if (unlikely(err == -EINPROGRESS))
		goto out;

	rctx->out = req->result;
	err = ahash_mcryptd_update(&rctx->areq);
	if (err) {
		req->base.complete = rctx->complete;
		goto out;
	}

	return;
out:
	local_bh_disable();
	rctx->complete(&req->base, err);
	local_bh_enable();
}

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static int mcryptd_hash_update_enqueue(struct ahash_request *req)
{
	return mcryptd_hash_enqueue(req, mcryptd_hash_update);
}

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static void mcryptd_hash_final(struct crypto_async_request *req_async, int err)
{
	struct ahash_request *req = ahash_request_cast(req_async);
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);

	if (unlikely(err == -EINPROGRESS))
		goto out;

	rctx->out = req->result;
	err = ahash_mcryptd_final(&rctx->areq);
	if (err) {
		req->base.complete = rctx->complete;
		goto out;
	}

	return;
out:
	local_bh_disable();
	rctx->complete(&req->base, err);
	local_bh_enable();
}

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static int mcryptd_hash_final_enqueue(struct ahash_request *req)
{
	return mcryptd_hash_enqueue(req, mcryptd_hash_final);
}

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static void mcryptd_hash_finup(struct crypto_async_request *req_async, int err)
{
	struct ahash_request *req = ahash_request_cast(req_async);
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);

	if (unlikely(err == -EINPROGRESS))
		goto out;
	rctx->out = req->result;
	err = ahash_mcryptd_finup(&rctx->areq);

	if (err) {
		req->base.complete = rctx->complete;
		goto out;
	}

	return;
out:
	local_bh_disable();
	rctx->complete(&req->base, err);
	local_bh_enable();
}

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static int mcryptd_hash_finup_enqueue(struct ahash_request *req)
{
	return mcryptd_hash_enqueue(req, mcryptd_hash_finup);
}

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static void mcryptd_hash_digest(struct crypto_async_request *req_async, int err)
{
	struct mcryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm);
	struct crypto_ahash *child = ctx->child;
	struct ahash_request *req = ahash_request_cast(req_async);
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
	struct ahash_request *desc = &rctx->areq;

	if (unlikely(err == -EINPROGRESS))
		goto out;

	ahash_request_set_tfm(desc, child);
	ahash_request_set_callback(desc, CRYPTO_TFM_REQ_MAY_SLEEP,
						rctx->complete, req_async);

	rctx->out = req->result;
	err = ahash_mcryptd_digest(desc);

out:
	local_bh_disable();
	rctx->complete(&req->base, err);
	local_bh_enable();
}

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static int mcryptd_hash_digest_enqueue(struct ahash_request *req)
{
	return mcryptd_hash_enqueue(req, mcryptd_hash_digest);
}

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static int mcryptd_hash_export(struct ahash_request *req, void *out)
{
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);

	return crypto_ahash_export(&rctx->areq, out);
}

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megha dey megha dey 2 5.56% 1 50.00%
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static int mcryptd_hash_import(struct ahash_request *req, const void *in)
{
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);

	return crypto_ahash_import(&rctx->areq, in);
}

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megha dey megha dey 2 5.41% 1 50.00%
Total 37 100.00% 2 100.00%



static int mcryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb,
			      struct mcryptd_queue *queue)
{
	struct hashd_instance_ctx *ctx;
	struct ahash_instance *inst;
	struct hash_alg_common *halg;
	struct crypto_alg *alg;
	u32 type = 0;
	u32 mask = 0;
	int err;

	mcryptd_check_internal(tb, &type, &mask);

	halg = ahash_attr_alg(tb[1], type, mask);
	if (IS_ERR(halg))
		return PTR_ERR(halg);

	alg = &halg->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_ahash_spawn(&ctx->spawn, halg,
				      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 = halg->digestsize;
	inst->alg.halg.statesize = halg->statesize;
	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_ahash(&ctx->spawn);
out_free_inst:
		kfree(inst);
	}

out_put_alg:
	crypto_mod_put(alg);
	return err;
}

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megha dey megha dey 12 3.20% 1 25.00%
rui wang rui wang 11 2.93% 1 25.00%
Total 375 100.00% 4 100.00%


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;
}

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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_ahash(&hctx->spawn);
		kfree(ahash_instance(inst));
		return;
	default:
		crypto_drop_spawn(&ctx->spawn);
		kfree(inst);
	}
}

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Total 77 100.00% 2 100.00%


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);
}
Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 107 100.00% 1 100.00%
Total 107 100.00% 1 100.00%


EXPORT_SYMBOL_GPL(mcryptd_alloc_ahash);



int ahash_mcryptd_digest(struct ahash_request *desc)
{
	int err;

	err = crypto_ahash_init(desc) ?:
	      ahash_mcryptd_finup(desc);

	return err;
}

Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 26 89.66% 1 50.00%
megha dey megha dey 3 10.34% 1 50.00%
Total 29 100.00% 2 100.00%



int ahash_mcryptd_update(struct ahash_request *desc)
{
	/* alignment is to be done by multi-buffer crypto algorithm if needed */

	return crypto_ahash_update(desc);
}

Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 15 88.24% 1 50.00%
megha dey megha dey 2 11.76% 1 50.00%
Total 17 100.00% 2 100.00%



int ahash_mcryptd_finup(struct ahash_request *desc)
{
	/* alignment is to be done by multi-buffer crypto algorithm if needed */

	return crypto_ahash_finup(desc);
}

Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 15 88.24% 1 50.00%
megha dey megha dey 2 11.76% 1 50.00%
Total 17 100.00% 2 100.00%



int ahash_mcryptd_final(struct ahash_request *desc)
{
	/* alignment is to be done by multi-buffer crypto algorithm if needed */

	return crypto_ahash_final(desc);
}

Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 15 88.24% 1 50.00%
megha dey megha dey 2 11.76% 1 50.00%
Total 17 100.00% 2 100.00%



struct crypto_ahash *mcryptd_ahash_child(struct mcryptd_ahash *tfm)
{
	struct mcryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base);

	return ctx->child;
}
Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 29 96.67% 1 50.00%
megha dey megha dey 1 3.33% 1 50.00%
Total 30 100.00% 2 100.00%


EXPORT_SYMBOL_GPL(mcryptd_ahash_child);



struct ahash_request *mcryptd_ahash_desc(struct ahash_request *req)
{
	struct mcryptd_hash_request_ctx *rctx = ahash_request_ctx(req);
	return &rctx->areq;
}
Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 25 89.29% 1 50.00%
megha dey megha dey 3 10.71% 1 50.00%
Total 28 100.00% 2 100.00%


EXPORT_SYMBOL_GPL(mcryptd_ahash_desc);



void mcryptd_free_ahash(struct mcryptd_ahash *tfm)
{
	crypto_free_ahash(&tfm->base);
}
Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 18 100.00% 1 100.00%
Total 18 100.00% 1 100.00%


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;
}

Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 110 100.00% 1 100.00%
Total 110 100.00% 1 100.00%



static void __exit mcryptd_exit(void)
{
	mcryptd_fini_queue(&mqueue);
	crypto_unregister_template(&mcryptd_tmpl);
	free_percpu(mcryptd_flist);
}

Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 26 100.00% 1 100.00%
Total 26 100.00% 1 100.00%


subsys_initcall(mcryptd_init);

module_exit(mcryptd_exit);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("Software async multibuffer crypto daemon");
MODULE_ALIAS_CRYPTO("mcryptd");
Overall Contributors
Person Tokens Prop Commits CommitProp
tim chen tim chen 2947 92.04% 1 14.29%
megha dey megha dey 122 3.81% 1 14.29%
stephan mueller stephan mueller 111 3.47% 1 14.29%
rui wang rui wang 11 0.34% 1 14.29%
kees cook kees cook 5 0.16% 1 14.29%
geliang tang geliang tang 5 0.16% 1 14.29%
fengguang wu fengguang wu 1 0.03% 1 14.29%
Total 3202 100.00% 7 100.00%
  Directory: crypto

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
tim chen	tim chen	97	100.00%	1	100.00%
	Total	97	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.8 crypto/mcryptd.c

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