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Commit e19ab121 authored by Herbert Xu's avatar Herbert Xu
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crypto: qat - Convert to new AEAD interface 

This patch converts qat to the new AEAD interface.  IV generation
has been removed since it's equivalent to a software implementation.
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
Tested-by: default avatarTadeusz Struk <tadeusz.struk@intel.com>
parent c1359495
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Inline Side-by-side
Showing with 123 additions and 204 deletions
drivers/crypto/qat/qat_common/qat_algs.c
View file @ e19ab121
......@@ -53,7 +53,6 @@
#include <crypto/hash.h>
#include <crypto/algapi.h>
#include <crypto/authenc.h>
#include <crypto/rng.h>
#include <linux/dma-mapping.h>
#include "adf_accel_devices.h"
#include "adf_transport.h"
......@@ -113,9 +112,6 @@ struct qat_alg_aead_ctx {
struct crypto_shash *hash_tfm;
enum icp_qat_hw_auth_algo qat_hash_alg;
struct qat_crypto_instance *inst;
struct crypto_tfm *tfm;
uint8_t salt[AES_BLOCK_SIZE];
spinlock_t lock; /* protects qat_alg_aead_ctx struct */
};
struct qat_alg_ablkcipher_ctx {
......@@ -273,11 +269,11 @@ static void qat_alg_init_common_hdr(struct icp_qat_fw_comn_req_hdr *header)
ICP_QAT_FW_LA_NO_UPDATE_STATE);
}
static int qat_alg_aead_init_enc_session(struct qat_alg_aead_ctx *ctx,
static int qat_alg_aead_init_enc_session(struct crypto_aead *aead_tfm,
int alg,
struct crypto_authenc_keys *keys)
{
struct crypto_aead *aead_tfm = __crypto_aead_cast(ctx->tfm);
struct qat_alg_aead_ctx *ctx = crypto_aead_ctx(aead_tfm);
unsigned int digestsize = crypto_aead_crt(aead_tfm)->authsize;
struct qat_enc *enc_ctx = &ctx->enc_cd->qat_enc_cd;
struct icp_qat_hw_cipher_algo_blk *cipher = &enc_ctx->cipher;
......@@ -353,11 +349,11 @@ static int qat_alg_aead_init_enc_session(struct qat_alg_aead_ctx *ctx,
return 0;
}
static int qat_alg_aead_init_dec_session(struct qat_alg_aead_ctx *ctx,
static int qat_alg_aead_init_dec_session(struct crypto_aead *aead_tfm,
int alg,
struct crypto_authenc_keys *keys)
{
struct crypto_aead *aead_tfm = __crypto_aead_cast(ctx->tfm);
struct qat_alg_aead_ctx *ctx = crypto_aead_ctx(aead_tfm);
unsigned int digestsize = crypto_aead_crt(aead_tfm)->authsize;
struct qat_dec *dec_ctx = &ctx->dec_cd->qat_dec_cd;
struct icp_qat_hw_auth_algo_blk *hash = &dec_ctx->hash;
......@@ -510,30 +506,27 @@ static int qat_alg_validate_key(int key_len, int *alg)
return 0;
}
static int qat_alg_aead_init_sessions(struct qat_alg_aead_ctx *ctx,
static int qat_alg_aead_init_sessions(struct crypto_aead *tfm,
const uint8_t *key, unsigned int keylen)
{
struct crypto_authenc_keys keys;
int alg;
if (crypto_rng_get_bytes(crypto_default_rng, ctx->salt, AES_BLOCK_SIZE))
return -EFAULT;
if (crypto_authenc_extractkeys(&keys, key, keylen))
goto bad_key;
if (qat_alg_validate_key(keys.enckeylen, &alg))
goto bad_key;
if (qat_alg_aead_init_enc_session(ctx, alg, &keys))
if (qat_alg_aead_init_enc_session(tfm, alg, &keys))
goto error;
if (qat_alg_aead_init_dec_session(ctx, alg, &keys))
if (qat_alg_aead_init_dec_session(tfm, alg, &keys))
goto error;
return 0;
bad_key:
crypto_tfm_set_flags(ctx->tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
crypto_aead_set_flags(tfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
error:
return -EFAULT;
......@@ -562,7 +555,6 @@ static int qat_alg_aead_setkey(struct crypto_aead *tfm, const uint8_t *key,
struct qat_alg_aead_ctx *ctx = crypto_aead_ctx(tfm);
struct device *dev;
spin_lock(&ctx->lock);
if (ctx->enc_cd) {
/* rekeying */
dev = &GET_DEV(ctx->inst->accel_dev);
......@@ -576,7 +568,6 @@ static int qat_alg_aead_setkey(struct crypto_aead *tfm, const uint8_t *key,
struct qat_crypto_instance *inst =
qat_crypto_get_instance_node(node);
if (!inst) {
spin_unlock(&ctx->lock);
return -EINVAL;
}
......@@ -586,19 +577,16 @@ static int qat_alg_aead_setkey(struct crypto_aead *tfm, const uint8_t *key,
&ctx->enc_cd_paddr,
GFP_ATOMIC);
if (!ctx->enc_cd) {
spin_unlock(&ctx->lock);
return -ENOMEM;
}
ctx->dec_cd = dma_zalloc_coherent(dev, sizeof(*ctx->dec_cd),
&ctx->dec_cd_paddr,
GFP_ATOMIC);
if (!ctx->dec_cd) {
spin_unlock(&ctx->lock);
goto out_free_enc;
}
}
spin_unlock(&ctx->lock);
if (qat_alg_aead_init_sessions(ctx, key, keylen))
if (qat_alg_aead_init_sessions(tfm, key, keylen))
goto out_free_all;
return 0;
......@@ -649,22 +637,20 @@ static void qat_alg_free_bufl(struct qat_crypto_instance *inst,
}
static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
struct scatterlist *assoc, int assoclen,
struct scatterlist *sgl,
struct scatterlist *sglout, uint8_t *iv,
uint8_t ivlen,
struct scatterlist *sglout,
struct qat_crypto_request *qat_req)
{
struct device *dev = &GET_DEV(inst->accel_dev);
int i, bufs = 0, sg_nctr = 0;
int n = sg_nents(sgl), assoc_n = sg_nents(assoc);
int i, sg_nctr = 0;
int n = sg_nents(sgl);
struct qat_alg_buf_list *bufl;
struct qat_alg_buf_list *buflout = NULL;
dma_addr_t blp;
dma_addr_t bloutp = 0;
struct scatterlist *sg;
size_t sz_out, sz = sizeof(struct qat_alg_buf_list) +
((1 + n + assoc_n) * sizeof(struct qat_alg_buf));
((1 + n) * sizeof(struct qat_alg_buf));
if (unlikely(!n))
return -EINVAL;
......@@ -678,35 +664,8 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
if (unlikely(dma_mapping_error(dev, blp)))
goto err;
for_each_sg(assoc, sg, assoc_n, i) {
if (!sg->length)
continue;
if (!(assoclen > 0))
break;
bufl->bufers[bufs].addr =
dma_map_single(dev, sg_virt(sg),
min_t(int, assoclen, sg->length),
DMA_BIDIRECTIONAL);
bufl->bufers[bufs].len = min_t(int, assoclen, sg->length);
if (unlikely(dma_mapping_error(dev, bufl->bufers[bufs].addr)))
goto err;
bufs++;
assoclen -= sg->length;
}
if (ivlen) {
bufl->bufers[bufs].addr = dma_map_single(dev, iv, ivlen,
DMA_BIDIRECTIONAL);
bufl->bufers[bufs].len = ivlen;
if (unlikely(dma_mapping_error(dev, bufl->bufers[bufs].addr)))
goto err;
bufs++;
}
for_each_sg(sgl, sg, n, i) {
int y = sg_nctr + bufs;
int y = sg_nctr;
if (!sg->length)
continue;
......@@ -719,7 +678,7 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
goto err;
sg_nctr++;
}
bufl->num_bufs = sg_nctr + bufs;
bufl->num_bufs = sg_nctr;
qat_req->buf.bl = bufl;
qat_req->buf.blp = blp;
qat_req->buf.sz = sz;
......@@ -729,7 +688,7 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
n = sg_nents(sglout);
sz_out = sizeof(struct qat_alg_buf_list) +
((1 + n + assoc_n) * sizeof(struct qat_alg_buf));
((1 + n) * sizeof(struct qat_alg_buf));
sg_nctr = 0;
buflout = kzalloc_node(sz_out, GFP_ATOMIC,
dev_to_node(&GET_DEV(inst->accel_dev)));
......@@ -739,14 +698,8 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
if (unlikely(dma_mapping_error(dev, bloutp)))
goto err;
bufers = buflout->bufers;
/* For out of place operation dma map only data and
* reuse assoc mapping and iv */
for (i = 0; i < bufs; i++) {
bufers[i].len = bufl->bufers[i].len;
bufers[i].addr = bufl->bufers[i].addr;
}
for_each_sg(sglout, sg, n, i) {
int y = sg_nctr + bufs;
int y = sg_nctr;
if (!sg->length)
continue;
......@@ -759,7 +712,7 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
bufers[y].len = sg->length;
sg_nctr++;
}
buflout->num_bufs = sg_nctr + bufs;
buflout->num_bufs = sg_nctr;
buflout->num_mapped_bufs = sg_nctr;
qat_req->buf.blout = buflout;
qat_req->buf.bloutp = bloutp;
......@@ -773,7 +726,7 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
err:
dev_err(dev, "Failed to map buf for dma\n");
sg_nctr = 0;
for (i = 0; i < n + bufs; i++)
for (i = 0; i < n; i++)
if (!dma_mapping_error(dev, bufl->bufers[i].addr))
dma_unmap_single(dev, bufl->bufers[i].addr,
bufl->bufers[i].len,
......@@ -784,7 +737,7 @@ static int qat_alg_sgl_to_bufl(struct qat_crypto_instance *inst,
kfree(bufl);
if (sgl != sglout && buflout) {
n = sg_nents(sglout);
for (i = bufs; i < n + bufs; i++)
for (i = 0; i < n; i++)
if (!dma_mapping_error(dev, buflout->bufers[i].addr))
dma_unmap_single(dev, buflout->bufers[i].addr,
buflout->bufers[i].len,
......@@ -847,9 +800,7 @@ static int qat_alg_aead_dec(struct aead_request *areq)
int digst_size = crypto_aead_crt(aead_tfm)->authsize;
int ret, ctr = 0;
ret = qat_alg_sgl_to_bufl(ctx->inst, areq->assoc, areq->assoclen,
areq->src, areq->dst, areq->iv,
AES_BLOCK_SIZE, qat_req);
ret = qat_alg_sgl_to_bufl(ctx->inst, areq->src, areq->dst, qat_req);
if (unlikely(ret))
return ret;
......@@ -863,12 +814,11 @@ static int qat_alg_aead_dec(struct aead_request *areq)
qat_req->req.comn_mid.dest_data_addr = qat_req->buf.bloutp;
cipher_param = (void *)&qat_req->req.serv_specif_rqpars;
cipher_param->cipher_length = areq->cryptlen - digst_size;
cipher_param->cipher_offset = areq->assoclen + AES_BLOCK_SIZE;
cipher_param->cipher_offset = areq->assoclen;
memcpy(cipher_param->u.cipher_IV_array, areq->iv, AES_BLOCK_SIZE);
auth_param = (void *)((uint8_t *)cipher_param + sizeof(*cipher_param));
auth_param->auth_off = 0;
auth_param->auth_len = areq->assoclen +
cipher_param->cipher_length + AES_BLOCK_SIZE;
auth_param->auth_len = areq->assoclen + cipher_param->cipher_length;
do {
ret = adf_send_message(ctx->inst->sym_tx, (uint32_t *)msg);
} while (ret == -EAGAIN && ctr++ < 10);
......@@ -880,8 +830,7 @@ static int qat_alg_aead_dec(struct aead_request *areq)
return -EINPROGRESS;
}
static int qat_alg_aead_enc_internal(struct aead_request *areq, uint8_t *iv,
int enc_iv)
static int qat_alg_aead_enc(struct aead_request *areq)
{
struct crypto_aead *aead_tfm = crypto_aead_reqtfm(areq);
struct crypto_tfm *tfm = crypto_aead_tfm(aead_tfm);
......@@ -890,11 +839,10 @@ static int qat_alg_aead_enc_internal(struct aead_request *areq, uint8_t *iv,
struct icp_qat_fw_la_cipher_req_params *cipher_param;
struct icp_qat_fw_la_auth_req_params *auth_param;
struct icp_qat_fw_la_bulk_req *msg;
uint8_t *iv = areq->iv;
int ret, ctr = 0;
ret = qat_alg_sgl_to_bufl(ctx->inst, areq->assoc, areq->assoclen,
areq->src, areq->dst, iv, AES_BLOCK_SIZE,
qat_req);
ret = qat_alg_sgl_to_bufl(ctx->inst, areq->src, areq->dst, qat_req);
if (unlikely(ret))
return ret;
......@@ -909,16 +857,12 @@ static int qat_alg_aead_enc_internal(struct aead_request *areq, uint8_t *iv,
cipher_param = (void *)&qat_req->req.serv_specif_rqpars;
auth_param = (void *)((uint8_t *)cipher_param + sizeof(*cipher_param));
if (enc_iv) {
cipher_param->cipher_length = areq->cryptlen + AES_BLOCK_SIZE;
cipher_param->cipher_offset = areq->assoclen;
} else {
memcpy(cipher_param->u.cipher_IV_array, iv, AES_BLOCK_SIZE);
cipher_param->cipher_length = areq->cryptlen;
cipher_param->cipher_offset = areq->assoclen + AES_BLOCK_SIZE;
}
cipher_param->cipher_offset = areq->assoclen;
auth_param->auth_off = 0;
auth_param->auth_len = areq->assoclen + areq->cryptlen + AES_BLOCK_SIZE;
auth_param->auth_len = areq->assoclen + areq->cryptlen;
do {
ret = adf_send_message(ctx->inst->sym_tx, (uint32_t *)msg);
......@@ -931,25 +875,6 @@ static int qat_alg_aead_enc_internal(struct aead_request *areq, uint8_t *iv,
return -EINPROGRESS;
}
static int qat_alg_aead_enc(struct aead_request *areq)
{
return qat_alg_aead_enc_internal(areq, areq->iv, 0);
}
static int qat_alg_aead_genivenc(struct aead_givcrypt_request *req)
{
struct crypto_aead *aead_tfm = crypto_aead_reqtfm(&req->areq);
struct crypto_tfm *tfm = crypto_aead_tfm(aead_tfm);
struct qat_alg_aead_ctx *ctx = crypto_tfm_ctx(tfm);
__be64 seq;
memcpy(req->giv, ctx->salt, AES_BLOCK_SIZE);
seq = cpu_to_be64(req->seq);
memcpy(req->giv + AES_BLOCK_SIZE - sizeof(uint64_t),
&seq, sizeof(uint64_t));
return qat_alg_aead_enc_internal(&req->areq, req->giv, 1);
}
static int qat_alg_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
const uint8_t *key,
unsigned int keylen)
......@@ -1021,8 +946,7 @@ static int qat_alg_ablkcipher_encrypt(struct ablkcipher_request *req)
struct icp_qat_fw_la_bulk_req *msg;
int ret, ctr = 0;
ret = qat_alg_sgl_to_bufl(ctx->inst, NULL, 0, req->src, req->dst,
NULL, 0, qat_req);
ret = qat_alg_sgl_to_bufl(ctx->inst, req->src, req->dst, qat_req);
if (unlikely(ret))
return ret;
......@@ -1059,8 +983,7 @@ static int qat_alg_ablkcipher_decrypt(struct ablkcipher_request *req)
struct icp_qat_fw_la_bulk_req *msg;
int ret, ctr = 0;
ret = qat_alg_sgl_to_bufl(ctx->inst, NULL, 0, req->src, req->dst,
NULL, 0, qat_req);
ret = qat_alg_sgl_to_bufl(ctx->inst, req->src, req->dst, qat_req);
if (unlikely(ret))
return ret;
......@@ -1087,46 +1010,42 @@ static int qat_alg_ablkcipher_decrypt(struct ablkcipher_request *req)
return -EINPROGRESS;
}
static int qat_alg_aead_init(struct crypto_tfm *tfm,
static int qat_alg_aead_init(struct crypto_aead *tfm,
enum icp_qat_hw_auth_algo hash,
const char *hash_name)
{
struct qat_alg_aead_ctx *ctx = crypto_tfm_ctx(tfm);
struct qat_alg_aead_ctx *ctx = crypto_aead_ctx(tfm);
ctx->hash_tfm = crypto_alloc_shash(hash_name, 0, 0);
if (IS_ERR(ctx->hash_tfm))
return -EFAULT;
spin_lock_init(&ctx->lock);
return PTR_ERR(ctx->hash_tfm);
ctx->qat_hash_alg = hash;
crypto_aead_set_reqsize(__crypto_aead_cast(tfm),
sizeof(struct aead_request) +
crypto_aead_set_reqsize(tfm, sizeof(struct aead_request) +
sizeof(struct qat_crypto_request));
ctx->tfm = tfm;
return 0;
}
static int qat_alg_aead_sha1_init(struct crypto_tfm *tfm)
static int qat_alg_aead_sha1_init(struct crypto_aead *tfm)
{
return qat_alg_aead_init(tfm, ICP_QAT_HW_AUTH_ALGO_SHA1, "sha1");
}
static int qat_alg_aead_sha256_init(struct crypto_tfm *tfm)
static int qat_alg_aead_sha256_init(struct crypto_aead *tfm)
{
return qat_alg_aead_init(tfm, ICP_QAT_HW_AUTH_ALGO_SHA256, "sha256");
}
static int qat_alg_aead_sha512_init(struct crypto_tfm *tfm)
static int qat_alg_aead_sha512_init(struct crypto_aead *tfm)
{
return qat_alg_aead_init(tfm, ICP_QAT_HW_AUTH_ALGO_SHA512, "sha512");
}
static void qat_alg_aead_exit(struct crypto_tfm *tfm)
static void qat_alg_aead_exit(struct crypto_aead *tfm)
{
struct qat_alg_aead_ctx *ctx = crypto_tfm_ctx(tfm);
struct qat_alg_aead_ctx *ctx = crypto_aead_ctx(tfm);
struct qat_crypto_instance *inst = ctx->inst;
struct device *dev;
if (!IS_ERR(ctx->hash_tfm))
crypto_free_shash(ctx->hash_tfm);
if (!inst)
......@@ -1184,73 +1103,61 @@ static void qat_alg_ablkcipher_exit(struct crypto_tfm *tfm)
qat_crypto_put_instance(inst);
}
static struct crypto_alg qat_algs[] = { {
static struct aead_alg qat_aeads[] = { {
.base = {
.cra_name = "authenc(hmac(sha1),cbc(aes))",
.cra_driver_name = "qat_aes_cbc_hmac_sha1",
.cra_priority = 4001,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_AEAD_NEW,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct qat_alg_aead_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_aead_type,
.cra_module = THIS_MODULE,
.cra_init = qat_alg_aead_sha1_init,
.cra_exit = qat_alg_aead_exit,
.cra_u = {
.aead = {
},
.init = qat_alg_aead_sha1_init,
.exit = qat_alg_aead_exit,
.setkey = qat_alg_aead_setkey,
.decrypt = qat_alg_aead_dec,
.encrypt = qat_alg_aead_enc,
.givencrypt = qat_alg_aead_genivenc,
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA1_DIGEST_SIZE,
},
},
}, {
.base = {
.cra_name = "authenc(hmac(sha256),cbc(aes))",
.cra_driver_name = "qat_aes_cbc_hmac_sha256",
.cra_priority = 4001,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_AEAD_NEW,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct qat_alg_aead_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_aead_type,
.cra_module = THIS_MODULE,
.cra_init = qat_alg_aead_sha256_init,
.cra_exit = qat_alg_aead_exit,
.cra_u = {
.aead = {
},
.init = qat_alg_aead_sha256_init,
.exit = qat_alg_aead_exit,
.setkey = qat_alg_aead_setkey,
.decrypt = qat_alg_aead_dec,
.encrypt = qat_alg_aead_enc,
.givencrypt = qat_alg_aead_genivenc,
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA256_DIGEST_SIZE,
},
},
}, {
.base = {
.cra_name = "authenc(hmac(sha512),cbc(aes))",
.cra_driver_name = "qat_aes_cbc_hmac_sha512",
.cra_priority = 4001,
.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC,
.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_AEAD_NEW,
.cra_blocksize = AES_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct qat_alg_aead_ctx),
.cra_alignmask = 0,
.cra_type = &crypto_aead_type,
.cra_module = THIS_MODULE,
.cra_init = qat_alg_aead_sha512_init,
.cra_exit = qat_alg_aead_exit,
.cra_u = {
.aead = {
},
.init = qat_alg_aead_sha512_init,
.exit = qat_alg_aead_exit,
.setkey = qat_alg_aead_setkey,
.decrypt = qat_alg_aead_dec,
.encrypt = qat_alg_aead_enc,
.givencrypt = qat_alg_aead_genivenc,
.ivsize = AES_BLOCK_SIZE,
.maxauthsize = SHA512_DIGEST_SIZE,
},
},
}, {
} };
static struct crypto_alg qat_algs[] = { {
.cra_name = "cbc(aes)",
.cra_driver_name = "qat_aes_cbc",
.cra_priority = 4001,
......@@ -1276,42 +1183,54 @@ static struct crypto_alg qat_algs[] = { {
int qat_algs_register(void)
{
int ret = 0;
int ret = 0, i;
mutex_lock(&algs_lock);
if (++active_devs == 1) {
int i;
if (++active_devs != 1)
goto unlock;
for (i = 0; i < ARRAY_SIZE(qat_algs); i++)
qat_algs[i].cra_flags =
(qat_algs[i].cra_type == &crypto_aead_type) ?
CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC :
CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
qat_algs[i].cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC;
ret = crypto_register_algs(qat_algs, ARRAY_SIZE(qat_algs));
}
if (ret)
goto unlock;
for (i = 0; i < ARRAY_SIZE(qat_aeads); i++)
qat_aeads[i].base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_AEAD_NEW;
ret = crypto_register_aeads(qat_aeads, ARRAY_SIZE(qat_aeads));
if (ret)
goto unreg_algs;
unlock:
mutex_unlock(&algs_lock);
return ret;
unreg_algs:
crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
goto unlock;
}
int qat_algs_unregister(void)
{
int ret = 0;
mutex_lock(&algs_lock);
if (--active_devs == 0)
ret = crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
if (--active_devs != 0)
goto unlock;
crypto_unregister_aeads(qat_aeads, ARRAY_SIZE(qat_aeads));
crypto_unregister_algs(qat_algs, ARRAY_SIZE(qat_algs));
unlock:
mutex_unlock(&algs_lock);
return ret;
return 0;
}
int qat_algs_init(void)
{
crypto_get_default_rng();
return 0;
}
void qat_algs_exit(void)
{
crypto_put_default_rng();
}
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