423 lines
12 KiB
C
423 lines
12 KiB
C
|
// SPDX-License-Identifier: GPL-2.0
|
||
|
|
/*
|
||
|
|
* sun8i-ce-hash.c - hardware cryptographic offloader for
|
||
|
|
* Allwinner H3/A64/H5/H2+/H6/R40 SoC
|
||
|
|
*
|
||
|
|
* Copyright (C) 2015-2020 Corentin Labbe <clabbe@baylibre.com>
|
||
|
|
*
|
||
|
|
* This file add support for MD5 and SHA1/SHA224/SHA256/SHA384/SHA512.
|
||
|
|
*
|
||
|
|
* You could find the datasheet in Documentation/arm/sunxi.rst
|
||
|
|
*/
|
||
|
|
#include <linux/bottom_half.h>
|
||
|
|
#include <linux/dma-mapping.h>
|
||
|
|
#include <linux/pm_runtime.h>
|
||
|
|
#include <linux/scatterlist.h>
|
||
|
|
#include <crypto/internal/hash.h>
|
||
|
|
#include <crypto/sha1.h>
|
||
|
|
#include <crypto/sha2.h>
|
||
|
|
#include <crypto/md5.h>
|
||
|
|
#include "sun8i-ce.h"
|
||
|
|
|
||
|
|
int sun8i_ce_hash_crainit(struct crypto_tfm *tfm)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *op = crypto_tfm_ctx(tfm);
|
||
|
|
struct ahash_alg *alg = __crypto_ahash_alg(tfm->__crt_alg);
|
||
|
|
struct sun8i_ce_alg_template *algt;
|
||
|
|
int err;
|
||
|
|
|
||
|
|
memset(op, 0, sizeof(struct sun8i_ce_hash_tfm_ctx));
|
||
|
|
|
||
|
|
algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
|
||
|
|
op->ce = algt->ce;
|
||
|
|
|
||
|
|
op->enginectx.op.do_one_request = sun8i_ce_hash_run;
|
||
|
|
op->enginectx.op.prepare_request = NULL;
|
||
|
|
op->enginectx.op.unprepare_request = NULL;
|
||
|
|
|
||
|
|
/* FALLBACK */
|
||
|
|
op->fallback_tfm = crypto_alloc_ahash(crypto_tfm_alg_name(tfm), 0,
|
||
|
|
CRYPTO_ALG_NEED_FALLBACK);
|
||
|
|
if (IS_ERR(op->fallback_tfm)) {
|
||
|
|
dev_err(algt->ce->dev, "Fallback driver could no be loaded\n");
|
||
|
|
return PTR_ERR(op->fallback_tfm);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (algt->alg.hash.halg.statesize < crypto_ahash_statesize(op->fallback_tfm))
|
||
|
|
algt->alg.hash.halg.statesize = crypto_ahash_statesize(op->fallback_tfm);
|
||
|
|
|
||
|
|
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm),
|
||
|
|
sizeof(struct sun8i_ce_hash_reqctx) +
|
||
|
|
crypto_ahash_reqsize(op->fallback_tfm));
|
||
|
|
|
||
|
|
dev_info(op->ce->dev, "Fallback for %s is %s\n",
|
||
|
|
crypto_tfm_alg_driver_name(tfm),
|
||
|
|
crypto_tfm_alg_driver_name(&op->fallback_tfm->base));
|
||
|
|
err = pm_runtime_get_sync(op->ce->dev);
|
||
|
|
if (err < 0)
|
||
|
|
goto error_pm;
|
||
|
|
return 0;
|
||
|
|
error_pm:
|
||
|
|
pm_runtime_put_noidle(op->ce->dev);
|
||
|
|
crypto_free_ahash(op->fallback_tfm);
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void sun8i_ce_hash_craexit(struct crypto_tfm *tfm)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_tfm_ctx(tfm);
|
||
|
|
|
||
|
|
crypto_free_ahash(tfmctx->fallback_tfm);
|
||
|
|
pm_runtime_put_sync_suspend(tfmctx->ce->dev);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_init(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
|
||
|
|
memset(rctx, 0, sizeof(struct sun8i_ce_hash_reqctx));
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
|
||
|
|
return crypto_ahash_init(&rctx->fallback_req);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_export(struct ahash_request *areq, void *out)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
|
||
|
|
return crypto_ahash_export(&rctx->fallback_req, out);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_import(struct ahash_request *areq, const void *in)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
|
||
|
|
return crypto_ahash_import(&rctx->fallback_req, in);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_final(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
|
||
|
|
struct sun8i_ce_alg_template *algt;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags &
|
||
|
|
CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
rctx->fallback_req.result = areq->result;
|
||
|
|
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
|
||
|
|
algt->stat_fb++;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return crypto_ahash_final(&rctx->fallback_req);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_update(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags &
|
||
|
|
CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
rctx->fallback_req.nbytes = areq->nbytes;
|
||
|
|
rctx->fallback_req.src = areq->src;
|
||
|
|
|
||
|
|
return crypto_ahash_update(&rctx->fallback_req);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_finup(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
|
||
|
|
struct sun8i_ce_alg_template *algt;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags &
|
||
|
|
CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
|
||
|
|
rctx->fallback_req.nbytes = areq->nbytes;
|
||
|
|
rctx->fallback_req.src = areq->src;
|
||
|
|
rctx->fallback_req.result = areq->result;
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
|
||
|
|
algt->stat_fb++;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return crypto_ahash_finup(&rctx->fallback_req);
|
||
|
|
}
|
||
|
|
|
||
|
|
static int sun8i_ce_hash_digest_fb(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct sun8i_ce_hash_tfm_ctx *tfmctx = crypto_ahash_ctx(tfm);
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
|
||
|
|
struct sun8i_ce_alg_template *algt;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
ahash_request_set_tfm(&rctx->fallback_req, tfmctx->fallback_tfm);
|
||
|
|
rctx->fallback_req.base.flags = areq->base.flags &
|
||
|
|
CRYPTO_TFM_REQ_MAY_SLEEP;
|
||
|
|
|
||
|
|
rctx->fallback_req.nbytes = areq->nbytes;
|
||
|
|
rctx->fallback_req.src = areq->src;
|
||
|
|
rctx->fallback_req.result = areq->result;
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
|
||
|
|
algt->stat_fb++;
|
||
|
|
#endif
|
||
|
|
|
||
|
|
return crypto_ahash_digest(&rctx->fallback_req);
|
||
|
|
}
|
||
|
|
|
||
|
|
static bool sun8i_ce_hash_need_fallback(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct scatterlist *sg;
|
||
|
|
|
||
|
|
if (areq->nbytes == 0)
|
||
|
|
return true;
|
||
|
|
/* we need to reserve one SG for padding one */
|
||
|
|
if (sg_nents(areq->src) > MAX_SG - 1)
|
||
|
|
return true;
|
||
|
|
sg = areq->src;
|
||
|
|
while (sg) {
|
||
|
|
if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
|
||
|
|
return true;
|
||
|
|
sg = sg_next(sg);
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_digest(struct ahash_request *areq)
|
||
|
|
{
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct sun8i_ce_alg_template *algt;
|
||
|
|
struct sun8i_ce_dev *ce;
|
||
|
|
struct crypto_engine *engine;
|
||
|
|
struct scatterlist *sg;
|
||
|
|
int nr_sgs, e, i;
|
||
|
|
|
||
|
|
if (sun8i_ce_hash_need_fallback(areq))
|
||
|
|
return sun8i_ce_hash_digest_fb(areq);
|
||
|
|
|
||
|
|
nr_sgs = sg_nents(areq->src);
|
||
|
|
if (nr_sgs > MAX_SG - 1)
|
||
|
|
return sun8i_ce_hash_digest_fb(areq);
|
||
|
|
|
||
|
|
for_each_sg(areq->src, sg, nr_sgs, i) {
|
||
|
|
if (sg->length % 4 || !IS_ALIGNED(sg->offset, sizeof(u32)))
|
||
|
|
return sun8i_ce_hash_digest_fb(areq);
|
||
|
|
}
|
||
|
|
|
||
|
|
algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
|
||
|
|
ce = algt->ce;
|
||
|
|
|
||
|
|
e = sun8i_ce_get_engine_number(ce);
|
||
|
|
rctx->flow = e;
|
||
|
|
engine = ce->chanlist[e].engine;
|
||
|
|
|
||
|
|
return crypto_transfer_hash_request_to_engine(engine, areq);
|
||
|
|
}
|
||
|
|
|
||
|
|
int sun8i_ce_hash_run(struct crypto_engine *engine, void *breq)
|
||
|
|
{
|
||
|
|
struct ahash_request *areq = container_of(breq, struct ahash_request, base);
|
||
|
|
struct crypto_ahash *tfm = crypto_ahash_reqtfm(areq);
|
||
|
|
struct ahash_alg *alg = __crypto_ahash_alg(tfm->base.__crt_alg);
|
||
|
|
struct sun8i_ce_hash_reqctx *rctx = ahash_request_ctx(areq);
|
||
|
|
struct sun8i_ce_alg_template *algt;
|
||
|
|
struct sun8i_ce_dev *ce;
|
||
|
|
struct sun8i_ce_flow *chan;
|
||
|
|
struct ce_task *cet;
|
||
|
|
struct scatterlist *sg;
|
||
|
|
int nr_sgs, flow, err;
|
||
|
|
unsigned int len;
|
||
|
|
u32 common;
|
||
|
|
u64 byte_count;
|
||
|
|
__le32 *bf;
|
||
|
|
void *buf = NULL;
|
||
|
|
int j, i, todo;
|
||
|
|
int nbw = 0;
|
||
|
|
u64 fill, min_fill;
|
||
|
|
__be64 *bebits;
|
||
|
|
__le64 *lebits;
|
||
|
|
void *result = NULL;
|
||
|
|
u64 bs;
|
||
|
|
int digestsize;
|
||
|
|
dma_addr_t addr_res, addr_pad;
|
||
|
|
|
||
|
|
algt = container_of(alg, struct sun8i_ce_alg_template, alg.hash);
|
||
|
|
ce = algt->ce;
|
||
|
|
|
||
|
|
bs = algt->alg.hash.halg.base.cra_blocksize;
|
||
|
|
digestsize = algt->alg.hash.halg.digestsize;
|
||
|
|
if (digestsize == SHA224_DIGEST_SIZE)
|
||
|
|
digestsize = SHA256_DIGEST_SIZE;
|
||
|
|
if (digestsize == SHA384_DIGEST_SIZE)
|
||
|
|
digestsize = SHA512_DIGEST_SIZE;
|
||
|
|
|
||
|
|
/* the padding could be up to two block. */
|
||
|
|
buf = kzalloc(bs * 2, GFP_KERNEL | GFP_DMA);
|
||
|
|
if (!buf) {
|
||
|
|
err = -ENOMEM;
|
||
|
|
goto theend;
|
||
|
|
}
|
||
|
|
bf = (__le32 *)buf;
|
||
|
|
|
||
|
|
result = kzalloc(digestsize, GFP_KERNEL | GFP_DMA);
|
||
|
|
if (!result) {
|
||
|
|
err = -ENOMEM;
|
||
|
|
goto theend;
|
||
|
|
}
|
||
|
|
|
||
|
|
flow = rctx->flow;
|
||
|
|
chan = &ce->chanlist[flow];
|
||
|
|
|
||
|
|
#ifdef CONFIG_CRYPTO_DEV_SUN8I_CE_DEBUG
|
||
|
|
algt->stat_req++;
|
||
|
|
#endif
|
||
|
|
dev_dbg(ce->dev, "%s %s len=%d\n", __func__, crypto_tfm_alg_name(areq->base.tfm), areq->nbytes);
|
||
|
|
|
||
|
|
cet = chan->tl;
|
||
|
|
memset(cet, 0, sizeof(struct ce_task));
|
||
|
|
|
||
|
|
cet->t_id = cpu_to_le32(flow);
|
||
|
|
common = ce->variant->alg_hash[algt->ce_algo_id];
|
||
|
|
common |= CE_COMM_INT;
|
||
|
|
cet->t_common_ctl = cpu_to_le32(common);
|
||
|
|
|
||
|
|
cet->t_sym_ctl = 0;
|
||
|
|
cet->t_asym_ctl = 0;
|
||
|
|
|
||
|
|
nr_sgs = dma_map_sg(ce->dev, areq->src, sg_nents(areq->src), DMA_TO_DEVICE);
|
||
|
|
if (nr_sgs <= 0 || nr_sgs > MAX_SG) {
|
||
|
|
dev_err(ce->dev, "Invalid sg number %d\n", nr_sgs);
|
||
|
|
err = -EINVAL;
|
||
|
|
goto theend;
|
||
|
|
}
|
||
|
|
|
||
|
|
len = areq->nbytes;
|
||
|
|
for_each_sg(areq->src, sg, nr_sgs, i) {
|
||
|
|
cet->t_src[i].addr = cpu_to_le32(sg_dma_address(sg));
|
||
|
|
todo = min(len, sg_dma_len(sg));
|
||
|
|
cet->t_src[i].len = cpu_to_le32(todo / 4);
|
||
|
|
len -= todo;
|
||
|
|
}
|
||
|
|
if (len > 0) {
|
||
|
|
dev_err(ce->dev, "remaining len %d\n", len);
|
||
|
|
err = -EINVAL;
|
||
|
|
goto theend;
|
||
|
|
}
|
||
|
|
addr_res = dma_map_single(ce->dev, result, digestsize, DMA_FROM_DEVICE);
|
||
|
|
cet->t_dst[0].addr = cpu_to_le32(addr_res);
|
||
|
|
cet->t_dst[0].len = cpu_to_le32(digestsize / 4);
|
||
|
|
if (dma_mapping_error(ce->dev, addr_res)) {
|
||
|
|
dev_err(ce->dev, "DMA map dest\n");
|
||
|
|
err = -EINVAL;
|
||
|
|
goto theend;
|
||
|
|
}
|
||
|
|
|
||
|
|
byte_count = areq->nbytes;
|
||
|
|
j = 0;
|
||
|
|
bf[j++] = cpu_to_le32(0x80);
|
||
|
|
|
||
|
|
if (bs == 64) {
|
||
|
|
fill = 64 - (byte_count % 64);
|
||
|
|
min_fill = 2 * sizeof(u32) + (nbw ? 0 : sizeof(u32));
|
||
|
|
} else {
|
||
|
|
fill = 128 - (byte_count % 128);
|
||
|
|
min_fill = 4 * sizeof(u32) + (nbw ? 0 : sizeof(u32));
|
||
|
|
}
|
||
|
|
|
||
|
|
if (fill < min_fill)
|
||
|
|
fill += bs;
|
||
|
|
|
||
|
|
j += (fill - min_fill) / sizeof(u32);
|
||
|
|
|
||
|
|
switch (algt->ce_algo_id) {
|
||
|
|
case CE_ID_HASH_MD5:
|
||
|
|
lebits = (__le64 *)&bf[j];
|
||
|
|
*lebits = cpu_to_le64(byte_count << 3);
|
||
|
|
j += 2;
|
||
|
|
break;
|
||
|
|
case CE_ID_HASH_SHA1:
|
||
|
|
case CE_ID_HASH_SHA224:
|
||
|
|
case CE_ID_HASH_SHA256:
|
||
|
|
bebits = (__be64 *)&bf[j];
|
||
|
|
*bebits = cpu_to_be64(byte_count << 3);
|
||
|
|
j += 2;
|
||
|
|
break;
|
||
|
|
case CE_ID_HASH_SHA384:
|
||
|
|
case CE_ID_HASH_SHA512:
|
||
|
|
bebits = (__be64 *)&bf[j];
|
||
|
|
*bebits = cpu_to_be64(byte_count >> 61);
|
||
|
|
j += 2;
|
||
|
|
bebits = (__be64 *)&bf[j];
|
||
|
|
*bebits = cpu_to_be64(byte_count << 3);
|
||
|
|
j += 2;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
addr_pad = dma_map_single(ce->dev, buf, j * 4, DMA_TO_DEVICE);
|
||
|
|
cet->t_src[i].addr = cpu_to_le32(addr_pad);
|
||
|
|
cet->t_src[i].len = cpu_to_le32(j);
|
||
|
|
if (dma_mapping_error(ce->dev, addr_pad)) {
|
||
|
|
dev_err(ce->dev, "DMA error on padding SG\n");
|
||
|
|
err = -EINVAL;
|
||
|
|
goto theend;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (ce->variant->hash_t_dlen_in_bits)
|
||
|
|
cet->t_dlen = cpu_to_le32((areq->nbytes + j * 4) * 8);
|
||
|
|
else
|
||
|
|
cet->t_dlen = cpu_to_le32(areq->nbytes / 4 + j);
|
||
|
|
|
||
|
|
chan->timeout = areq->nbytes;
|
||
|
|
|
||
|
|
err = sun8i_ce_run_task(ce, flow, crypto_tfm_alg_name(areq->base.tfm));
|
||
|
|
|
||
|
|
dma_unmap_single(ce->dev, addr_pad, j * 4, DMA_TO_DEVICE);
|
||
|
|
dma_unmap_sg(ce->dev, areq->src, sg_nents(areq->src),
|
||
|
|
DMA_TO_DEVICE);
|
||
|
|
dma_unmap_single(ce->dev, addr_res, digestsize, DMA_FROM_DEVICE);
|
||
|
|
|
||
|
|
|
||
|
|
memcpy(areq->result, result, algt->alg.hash.halg.digestsize);
|
||
|
|
theend:
|
||
|
|
kfree(buf);
|
||
|
|
kfree(result);
|
||
|
|
local_bh_disable();
|
||
|
|
crypto_finalize_hash_request(engine, breq, err);
|
||
|
|
local_bh_enable();
|
||
|
|
return 0;
|
||
|
|
}
|