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Subject[Patch V5 1/7] crypto: Multi-buffer encryption infrastructure support
Date
In this patch, the infrastructure needed to support multibuffer
encryption implementation is added:

a) Enhance mcryptd daemon to support skcipher requests.

b) Add multi-buffer simd skcipher helper which presents the
top-level algorithm as an skcipher.

b) Update configuration to include multi-buffer encryption build
support.

For an introduction to the multi-buffer implementation, please see
http://www.intel.com/content/www/us/en/communications/communications-ia-multi-buffer-paper.html

Originally-by: Chandramouli Narayanan <mouli_7982@yahoo.com>
Signed-off-by: Megha Dey <megha.dey@linux.intel.com>
Acked-by: Tim Chen <tim.c.chen@linux.intel.com>
---
crypto/Kconfig | 15 +++
crypto/mcryptd.c | 298 +++++++++++++++++++++++++++++++++++++++++
crypto/simd.c | 164 +++++++++++++++++++++++
include/crypto/internal/simd.h | 3 +
include/crypto/mcryptd.h | 35 +++++
5 files changed, 515 insertions(+)

diff --git a/crypto/Kconfig b/crypto/Kconfig
index aac4bc9..d172459 100644
--- a/crypto/Kconfig
+++ b/crypto/Kconfig
@@ -1008,6 +1008,21 @@ config CRYPTO_AES_NI_INTEL
ECB, CBC, LRW, PCBC, XTS. The 64 bit version has additional
acceleration for CTR.

+config CRYPTO_AES_CBC_MB
+ tristate "AES CBC algorithm (x86_64 Multi-Buffer, Experimental)"
+ depends on X86 && 64BIT
+ select CRYPTO_SIMD
+ select CRYPTO_MCRYPTD
+ help
+ AES CBC encryption implemented using multi-buffer technique.
+ This algorithm computes on multiple data lanes concurrently with
+ SIMD instructions for better throughput. It should only be used
+ when we expect many concurrent crypto requests to keep all the
+ data lanes filled to realize the performance benefit. If the data
+ lanes are unfilled, a flush operation will be initiated after some
+ delay to process the exisiting crypto jobs, adding some extra
+ latency to low load case.
+
config CRYPTO_AES_SPARC64
tristate "AES cipher algorithms (SPARC64)"
depends on SPARC64
diff --git a/crypto/mcryptd.c b/crypto/mcryptd.c
index 4e64726..4e4830e 100644
--- a/crypto/mcryptd.c
+++ b/crypto/mcryptd.c
@@ -273,6 +273,266 @@ static inline bool mcryptd_check_internal(struct rtattr **tb, u32 *type,
return false;
}

+static int mcryptd_enqueue_skcipher_request(struct mcryptd_queue *queue,
+ struct crypto_async_request *request,
+ struct mcryptd_skcipher_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;
+}
+
+static int mcryptd_skcipher_setkey(struct crypto_skcipher *parent,
+ const u8 *key, unsigned int keylen)
+{
+ struct mcryptd_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 mcryptd_skcipher_complete(struct skcipher_request *req, int err)
+{
+ struct mcryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req);
+
+ local_bh_disable();
+ rctx->complete(&req->base, err);
+ local_bh_enable();
+}
+
+static void mcryptd_skcipher_encrypt(struct crypto_async_request *base,
+ int err)
+{
+ struct skcipher_request *req = skcipher_request_cast(base);
+ struct mcryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct mcryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct crypto_skcipher *child = ctx->child;
+ struct skcipher_request subreq;
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ /* set up the skcipher request to work on */
+ skcipher_request_set_tfm(&subreq, child);
+ skcipher_request_set_callback(&subreq,
+ CRYPTO_TFM_REQ_MAY_SLEEP, 0, 0);
+ skcipher_request_set_crypt(&subreq, req->src, req->dst,
+ req->cryptlen, req->iv);
+
+ /*
+ * pass addr of descriptor stored in the request context
+ * so that the callee can get to the request context
+ */
+ rctx->desc = subreq;
+ err = crypto_skcipher_encrypt(&rctx->desc);
+
+ if (err) {
+ req->base.complete = rctx->complete;
+ goto out;
+ }
+ return;
+
+out:
+ mcryptd_skcipher_complete(req, err);
+}
+
+static void mcryptd_skcipher_decrypt(struct crypto_async_request *base,
+ int err)
+{
+ struct skcipher_request *req = skcipher_request_cast(base);
+ struct mcryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct mcryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm);
+ struct crypto_skcipher *child = ctx->child;
+ struct skcipher_request subreq;
+
+ if (unlikely(err == -EINPROGRESS))
+ goto out;
+
+ /* set up the skcipher request to work on */
+ 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);
+
+ /*
+ * pass addr of descriptor stored in the request context
+ * so that the callee can get to the request context
+ */
+ rctx->desc = subreq;
+ err = crypto_skcipher_decrypt(&rctx->desc);
+
+ if (err) {
+ req->base.complete = rctx->complete;
+ goto out;
+ }
+ return;
+
+out:
+ mcryptd_skcipher_complete(req, err);
+}
+
+static int mcryptd_skcipher_enqueue(struct skcipher_request *req,
+ crypto_completion_t complete)
+{
+ struct mcryptd_skcipher_request_ctx *rctx =
+ skcipher_request_ctx(req);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct mcryptd_queue *queue;
+
+ queue = mcryptd_get_queue(crypto_skcipher_tfm(tfm));
+ rctx->complete = req->base.complete;
+ req->base.complete = complete;
+
+ return mcryptd_enqueue_skcipher_request(queue, &req->base, rctx);
+}
+
+static int mcryptd_skcipher_encrypt_enqueue(struct skcipher_request *req)
+{
+ return mcryptd_skcipher_enqueue(req, mcryptd_skcipher_encrypt);
+}
+
+static int mcryptd_skcipher_decrypt_enqueue(struct skcipher_request *req)
+{
+ return mcryptd_skcipher_enqueue(req, mcryptd_skcipher_decrypt);
+}
+
+static int mcryptd_skcipher_init_tfm(struct crypto_skcipher *tfm)
+{
+ struct skcipher_instance *inst = skcipher_alg_instance(tfm);
+ struct mskcipherd_instance_ctx *ictx = skcipher_instance_ctx(inst);
+ struct crypto_skcipher_spawn *spawn = &ictx->spawn;
+ struct mcryptd_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 mcryptd_skcipher_request_ctx));
+ return 0;
+}
+
+static void mcryptd_skcipher_exit_tfm(struct crypto_skcipher *tfm)
+{
+ struct mcryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm);
+
+ crypto_free_skcipher(ctx->child);
+}
+
+static void mcryptd_skcipher_free(struct skcipher_instance *inst)
+{
+ struct mskcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst);
+
+ crypto_drop_skcipher(&ctx->spawn);
+}
+
+static int mcryptd_init_instance(struct crypto_instance *inst,
+ struct crypto_alg *alg)
+{
+ if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
+ "mcryptd(%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;
+}
+
+static int mcryptd_create_skcipher(struct crypto_template *tmpl,
+ struct rtattr **tb,
+ struct mcryptd_queue *queue)
+{
+ struct mskcipherd_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;
+
+ mcryptd_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 = mcryptd_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 mcryptd_skcipher_ctx);
+
+ inst->alg.init = mcryptd_skcipher_init_tfm;
+ inst->alg.exit = mcryptd_skcipher_exit_tfm;
+
+ inst->alg.setkey = mcryptd_skcipher_setkey;
+ inst->alg.encrypt = mcryptd_skcipher_encrypt_enqueue;
+ inst->alg.decrypt = mcryptd_skcipher_decrypt_enqueue;
+
+ inst->free = mcryptd_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;
+}
+
static int mcryptd_hash_init_tfm(struct crypto_tfm *tfm)
{
struct crypto_instance *inst = crypto_tfm_alg_instance(tfm);
@@ -564,6 +824,8 @@ static int mcryptd_create(struct crypto_template *tmpl, struct rtattr **tb)
return PTR_ERR(algt);

switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) {
+ case CRYPTO_ALG_TYPE_BLKCIPHER:
+ return mcryptd_create_skcipher(tmpl, tb, &mqueue);
case CRYPTO_ALG_TYPE_DIGEST:
return mcryptd_create_hash(tmpl, tb, &mqueue);
break;
@@ -595,6 +857,42 @@ static void mcryptd_free(struct crypto_instance *inst)
.module = THIS_MODULE,
};

+struct mcryptd_skcipher *mcryptd_alloc_skcipher(const char *alg_name,
+ u32 type, u32 mask)
+{
+ char cryptd_alg_name[CRYPTO_MAX_ALG_NAME];
+ struct crypto_skcipher *tfm;
+
+ if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME,
+ "mcryptd(%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);
+ }
+
+ return container_of(tfm, struct mcryptd_skcipher, base);
+}
+EXPORT_SYMBOL_GPL(mcryptd_alloc_skcipher);
+
+struct crypto_skcipher *mcryptd_skcipher_child(
+ struct mcryptd_skcipher *tfm)
+{
+ struct mcryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base);
+
+ return ctx->child;
+}
+EXPORT_SYMBOL_GPL(mcryptd_skcipher_child);
+
+void mcryptd_free_skcipher(struct mcryptd_skcipher *tfm)
+{
+ crypto_free_skcipher(&tfm->base);
+}
+EXPORT_SYMBOL_GPL(mcryptd_free_skcipher);
+
struct mcryptd_ahash *mcryptd_alloc_ahash(const char *alg_name,
u32 type, u32 mask)
{
diff --git a/crypto/simd.c b/crypto/simd.c
index 8820337..6757d44 100644
--- a/crypto/simd.c
+++ b/crypto/simd.c
@@ -28,11 +28,14 @@
#include <crypto/cryptd.h>
#include <crypto/internal/simd.h>
#include <crypto/internal/skcipher.h>
+#include <crypto/mcryptd.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/preempt.h>
#include <asm/simd.h>

+static struct mcryptd_alg_state cbc_mb_alg_state;
+
struct simd_skcipher_alg {
const char *ialg_name;
struct skcipher_alg alg;
@@ -42,6 +45,10 @@ struct simd_skcipher_ctx {
struct cryptd_skcipher *cryptd_tfm;
};

+struct simd_skcipher_ctx_mb {
+ struct mcryptd_skcipher *mcryptd_tfm;
+};
+
static int simd_skcipher_setkey(struct crypto_skcipher *tfm, const u8 *key,
unsigned int key_len)
{
@@ -203,6 +210,163 @@ struct simd_skcipher_alg *simd_skcipher_create_compat(const char *algname,
}
EXPORT_SYMBOL_GPL(simd_skcipher_create_compat);

+static int simd_skcipher_setkey_mb(struct crypto_skcipher *tfm, const u8 *key,
+ unsigned int key_len)
+{
+ struct simd_skcipher_ctx_mb *ctx = crypto_skcipher_ctx(tfm);
+ struct crypto_skcipher *child = &ctx->mcryptd_tfm->base;
+ int err;
+
+ crypto_skcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK);
+ crypto_skcipher_set_flags(child, crypto_skcipher_get_flags(tfm) &
+ CRYPTO_TFM_REQ_MASK);
+ err = crypto_skcipher_setkey(child, key, key_len);
+ crypto_skcipher_set_flags(tfm, crypto_skcipher_get_flags(child) &
+ CRYPTO_TFM_RES_MASK);
+ return err;
+}
+
+static int simd_skcipher_decrypt_mb(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct simd_skcipher_ctx_mb *ctx = crypto_skcipher_ctx(tfm);
+ struct skcipher_request *subreq;
+ struct crypto_skcipher *child;
+
+ subreq = skcipher_request_ctx(req);
+ *subreq = *req;
+
+ child = &ctx->mcryptd_tfm->base;
+
+ skcipher_request_set_tfm(subreq, child);
+
+ return crypto_skcipher_decrypt(subreq);
+}
+
+static int simd_skcipher_encrypt_mb(struct skcipher_request *req)
+{
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct simd_skcipher_ctx_mb *ctx = crypto_skcipher_ctx(tfm);
+ struct skcipher_request *subreq;
+ struct crypto_skcipher *child;
+
+ subreq = skcipher_request_ctx(req);
+ *subreq = *req;
+
+ child = &ctx->mcryptd_tfm->base;
+
+ skcipher_request_set_tfm(subreq, child);
+
+ return crypto_skcipher_encrypt(subreq);
+}
+
+static void simd_skcipher_exit_mb(struct crypto_skcipher *tfm)
+{
+ struct simd_skcipher_ctx_mb *ctx = crypto_skcipher_ctx(tfm);
+
+ mcryptd_free_skcipher(ctx->mcryptd_tfm);
+}
+
+static int simd_skcipher_init_mb(struct crypto_skcipher *tfm)
+{
+ struct simd_skcipher_ctx_mb *ctx = crypto_skcipher_ctx(tfm);
+ struct mcryptd_skcipher *mcryptd_tfm;
+ struct simd_skcipher_alg *salg;
+ struct skcipher_alg *alg;
+ unsigned reqsize;
+ struct mcryptd_skcipher_ctx *mctx;
+
+ alg = crypto_skcipher_alg(tfm);
+ salg = container_of(alg, struct simd_skcipher_alg, alg);
+
+ mcryptd_tfm = mcryptd_alloc_skcipher(salg->ialg_name,
+ CRYPTO_ALG_INTERNAL,
+ CRYPTO_ALG_INTERNAL);
+ if (IS_ERR(mcryptd_tfm))
+ return PTR_ERR(mcryptd_tfm);
+
+ mctx = crypto_skcipher_ctx(&mcryptd_tfm->base);
+
+ mctx->alg_state = &cbc_mb_alg_state;
+ ctx->mcryptd_tfm = mcryptd_tfm;
+
+ reqsize = sizeof(struct skcipher_request);
+ reqsize += crypto_skcipher_reqsize(&mcryptd_tfm->base);
+
+ crypto_skcipher_set_reqsize(tfm, reqsize);
+
+ return 0;
+}
+
+struct simd_skcipher_alg *simd_skcipher_create_compat_mb(const char *algname,
+ const char *drvname,
+ const char *basename)
+{
+ struct simd_skcipher_alg *salg;
+ struct crypto_skcipher *tfm;
+ struct skcipher_alg *ialg;
+ struct skcipher_alg *alg;
+ int err;
+
+ tfm = crypto_alloc_skcipher(basename, CRYPTO_ALG_INTERNAL,
+ CRYPTO_ALG_INTERNAL | CRYPTO_ALG_ASYNC);
+ if (IS_ERR(tfm))
+ return ERR_CAST(tfm);
+
+ ialg = crypto_skcipher_alg(tfm);
+
+ salg = kzalloc(sizeof(*salg), GFP_KERNEL);
+ if (!salg) {
+ salg = ERR_PTR(-ENOMEM);
+ goto out_put_tfm;
+ }
+
+ salg->ialg_name = basename;
+ alg = &salg->alg;
+
+ err = -ENAMETOOLONG;
+ if (snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", algname) >=
+ CRYPTO_MAX_ALG_NAME)
+ goto out_free_salg;
+
+ if (snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
+ drvname) >= CRYPTO_MAX_ALG_NAME)
+ goto out_free_salg;
+
+ alg->base.cra_flags = CRYPTO_ALG_ASYNC;
+ alg->base.cra_priority = ialg->base.cra_priority;
+ alg->base.cra_blocksize = ialg->base.cra_blocksize;
+ alg->base.cra_alignmask = ialg->base.cra_alignmask;
+ alg->base.cra_module = ialg->base.cra_module;
+ alg->base.cra_ctxsize = sizeof(struct simd_skcipher_ctx_mb);
+
+ alg->ivsize = ialg->ivsize;
+ alg->chunksize = ialg->chunksize;
+ alg->min_keysize = ialg->min_keysize;
+ alg->max_keysize = ialg->max_keysize;
+
+ alg->init = simd_skcipher_init_mb;
+ alg->exit = simd_skcipher_exit_mb;
+
+ alg->setkey = simd_skcipher_setkey_mb;
+ alg->encrypt = simd_skcipher_encrypt_mb;
+ alg->decrypt = simd_skcipher_decrypt_mb;
+
+ err = crypto_register_skcipher(alg);
+ if (err)
+ goto out_free_salg;
+
+out_put_tfm:
+ crypto_free_skcipher(tfm);
+ return salg;
+
+out_free_salg:
+ kfree(salg);
+ salg = ERR_PTR(err);
+ goto out_put_tfm;
+}
+EXPORT_SYMBOL_GPL(simd_skcipher_create_compat_mb);
+
struct simd_skcipher_alg *simd_skcipher_create(const char *algname,
const char *basename)
{
diff --git a/include/crypto/internal/simd.h b/include/crypto/internal/simd.h
index 4295099..2c518a6 100644
--- a/include/crypto/internal/simd.h
+++ b/include/crypto/internal/simd.h
@@ -10,6 +10,9 @@
struct simd_skcipher_alg *simd_skcipher_create_compat(const char *algname,
const char *drvname,
const char *basename);
+struct simd_skcipher_alg *simd_skcipher_create_compat_mb(const char *algname,
+ const char *drvname,
+ const char *basename);
struct simd_skcipher_alg *simd_skcipher_create(const char *algname,
const char *basename);
void simd_skcipher_free(struct simd_skcipher_alg *alg);
diff --git a/include/crypto/mcryptd.h b/include/crypto/mcryptd.h
index 4a53c0d..5b17ce6 100644
--- a/include/crypto/mcryptd.h
+++ b/include/crypto/mcryptd.h
@@ -13,6 +13,28 @@
#include <linux/crypto.h>
#include <linux/kernel.h>
#include <crypto/hash.h>
+#include <crypto/b128ops.h>
+#include <crypto/internal/skcipher.h>
+#include <crypto/internal/hash.h>
+
+struct mskcipherd_instance_ctx {
+ struct crypto_skcipher_spawn spawn;
+ struct mcryptd_queue *queue;
+};
+
+struct mcryptd_skcipher_ctx {
+ struct crypto_skcipher *child;
+ struct mcryptd_alg_state *alg_state;
+};
+
+struct mcryptd_skcipher {
+ struct crypto_skcipher base;
+};
+
+struct mcryptd_skcipher *mcryptd_alloc_skcipher(const char *alg_name,
+ u32 type, u32 mask);
+struct crypto_skcipher *mcryptd_skcipher_child(struct mcryptd_skcipher *tfm);
+void mcryptd_free_skcipher(struct mcryptd_skcipher *tfm);

struct mcryptd_ahash {
struct crypto_ahash base;
@@ -62,6 +84,19 @@ struct mcryptd_hash_request_ctx {
struct ahash_request areq;
};

+struct mcryptd_skcipher_request_ctx {
+ struct list_head waiter;
+ crypto_completion_t complete;
+ struct mcryptd_tag tag;
+ struct skcipher_walk walk;
+ u8 flag;
+ int nbytes;
+ int error;
+ struct skcipher_request desc;
+ void *job;
+ u128 seq_iv;
+};
+
struct mcryptd_ahash *mcryptd_alloc_ahash(const char *alg_name,
u32 type, u32 mask);
struct crypto_ahash *mcryptd_ahash_child(struct mcryptd_ahash *tfm);
--
1.9.1
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