From: Eric Biggers <ebiggers@kernel.org>
To: linux-crypto@vger.kernel.org, Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Breno Leitão" <leitao@debian.org>,
"Paulo Flabiano Smorigo" <pfsmorigo@gmail.com>,
"Nayna Jain" <nayna@linux.ibm.com>,
linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 3/4] crypto: nx - convert AES-CBC to skcipher API
Date: Sat, 12 Oct 2019 21:39:17 -0700 [thread overview]
Message-ID: <20191013043918.337113-4-ebiggers@kernel.org> (raw)
In-Reply-To: <20191013043918.337113-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Convert the PowerPC Nest (NX) implementation of AES-CBC from the
deprecated "blkcipher" API to the "skcipher" API. This is needed in
order for the blkcipher API to be removed.
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
drivers/crypto/nx/nx-aes-cbc.c | 78 ++++++++++++++--------------------
drivers/crypto/nx/nx.c | 11 ++---
drivers/crypto/nx/nx.h | 4 +-
3 files changed, 41 insertions(+), 52 deletions(-)
diff --git a/drivers/crypto/nx/nx-aes-cbc.c b/drivers/crypto/nx/nx-aes-cbc.c
index 482a203a9260..92e921eceed7 100644
--- a/drivers/crypto/nx/nx-aes-cbc.c
+++ b/drivers/crypto/nx/nx-aes-cbc.c
@@ -18,11 +18,11 @@
#include "nx.h"
-static int cbc_aes_nx_set_key(struct crypto_tfm *tfm,
- const u8 *in_key,
- unsigned int key_len)
+static int cbc_aes_nx_set_key(struct crypto_skcipher *tfm,
+ const u8 *in_key,
+ unsigned int key_len)
{
- struct nx_crypto_ctx *nx_ctx = crypto_tfm_ctx(tfm);
+ struct nx_crypto_ctx *nx_ctx = crypto_skcipher_ctx(tfm);
struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
nx_ctx_init(nx_ctx, HCOP_FC_AES);
@@ -50,13 +50,11 @@ static int cbc_aes_nx_set_key(struct crypto_tfm *tfm,
return 0;
}
-static int cbc_aes_nx_crypt(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes,
- int enc)
+static int cbc_aes_nx_crypt(struct skcipher_request *req,
+ int enc)
{
- struct nx_crypto_ctx *nx_ctx = crypto_blkcipher_ctx(desc->tfm);
+ struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+ struct nx_crypto_ctx *nx_ctx = crypto_skcipher_ctx(tfm);
struct nx_csbcpb *csbcpb = nx_ctx->csbcpb;
unsigned long irq_flags;
unsigned int processed = 0, to_process;
@@ -70,9 +68,9 @@ static int cbc_aes_nx_crypt(struct blkcipher_desc *desc,
NX_CPB_FDM(csbcpb) &= ~NX_FDM_ENDE_ENCRYPT;
do {
- to_process = nbytes - processed;
+ to_process = req->cryptlen - processed;
- rc = nx_build_sg_lists(nx_ctx, desc->info, dst, src,
+ rc = nx_build_sg_lists(nx_ctx, req->iv, req->dst, req->src,
&to_process, processed,
csbcpb->cpb.aes_cbc.iv);
if (rc)
@@ -84,56 +82,46 @@ static int cbc_aes_nx_crypt(struct blkcipher_desc *desc,
}
rc = nx_hcall_sync(nx_ctx, &nx_ctx->op,
- desc->flags & CRYPTO_TFM_REQ_MAY_SLEEP);
+ req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP);
if (rc)
goto out;
- memcpy(desc->info, csbcpb->cpb.aes_cbc.cv, AES_BLOCK_SIZE);
+ memcpy(req->iv, csbcpb->cpb.aes_cbc.cv, AES_BLOCK_SIZE);
atomic_inc(&(nx_ctx->stats->aes_ops));
atomic64_add(csbcpb->csb.processed_byte_count,
&(nx_ctx->stats->aes_bytes));
processed += to_process;
- } while (processed < nbytes);
+ } while (processed < req->cryptlen);
out:
spin_unlock_irqrestore(&nx_ctx->lock, irq_flags);
return rc;
}
-static int cbc_aes_nx_encrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes)
+static int cbc_aes_nx_encrypt(struct skcipher_request *req)
{
- return cbc_aes_nx_crypt(desc, dst, src, nbytes, 1);
+ return cbc_aes_nx_crypt(req, 1);
}
-static int cbc_aes_nx_decrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes)
+static int cbc_aes_nx_decrypt(struct skcipher_request *req)
{
- return cbc_aes_nx_crypt(desc, dst, src, nbytes, 0);
+ return cbc_aes_nx_crypt(req, 0);
}
-struct crypto_alg nx_cbc_aes_alg = {
- .cra_name = "cbc(aes)",
- .cra_driver_name = "cbc-aes-nx",
- .cra_priority = 300,
- .cra_flags = CRYPTO_ALG_TYPE_BLKCIPHER,
- .cra_blocksize = AES_BLOCK_SIZE,
- .cra_ctxsize = sizeof(struct nx_crypto_ctx),
- .cra_type = &crypto_blkcipher_type,
- .cra_alignmask = 0xf,
- .cra_module = THIS_MODULE,
- .cra_init = nx_crypto_ctx_aes_cbc_init,
- .cra_exit = nx_crypto_ctx_exit,
- .cra_blkcipher = {
- .min_keysize = AES_MIN_KEY_SIZE,
- .max_keysize = AES_MAX_KEY_SIZE,
- .ivsize = AES_BLOCK_SIZE,
- .setkey = cbc_aes_nx_set_key,
- .encrypt = cbc_aes_nx_encrypt,
- .decrypt = cbc_aes_nx_decrypt,
- }
+struct skcipher_alg nx_cbc_aes_alg = {
+ .base.cra_name = "cbc(aes)",
+ .base.cra_driver_name = "cbc-aes-nx",
+ .base.cra_priority = 300,
+ .base.cra_blocksize = AES_BLOCK_SIZE,
+ .base.cra_ctxsize = sizeof(struct nx_crypto_ctx),
+ .base.cra_alignmask = 0xf,
+ .base.cra_module = THIS_MODULE,
+ .init = nx_crypto_ctx_aes_cbc_init,
+ .exit = nx_crypto_ctx_skcipher_exit,
+ .min_keysize = AES_MIN_KEY_SIZE,
+ .max_keysize = AES_MAX_KEY_SIZE,
+ .ivsize = AES_BLOCK_SIZE,
+ .setkey = cbc_aes_nx_set_key,
+ .encrypt = cbc_aes_nx_encrypt,
+ .decrypt = cbc_aes_nx_decrypt,
};
diff --git a/drivers/crypto/nx/nx.c b/drivers/crypto/nx/nx.c
index 4b97081e7486..8e5367776ca0 100644
--- a/drivers/crypto/nx/nx.c
+++ b/drivers/crypto/nx/nx.c
@@ -589,7 +589,7 @@ static int nx_register_algs(void)
if (rc)
goto out;
- rc = nx_register_alg(&nx_cbc_aes_alg, NX_FC_AES, NX_MODE_AES_CBC);
+ rc = nx_register_skcipher(&nx_cbc_aes_alg, NX_FC_AES, NX_MODE_AES_CBC);
if (rc)
goto out_unreg_ecb;
@@ -647,7 +647,7 @@ static int nx_register_algs(void)
out_unreg_ctr3686:
nx_unregister_alg(&nx_ctr3686_aes_alg, NX_FC_AES, NX_MODE_AES_CTR);
out_unreg_cbc:
- nx_unregister_alg(&nx_cbc_aes_alg, NX_FC_AES, NX_MODE_AES_CBC);
+ nx_unregister_skcipher(&nx_cbc_aes_alg, NX_FC_AES, NX_MODE_AES_CBC);
out_unreg_ecb:
nx_unregister_skcipher(&nx_ecb_aes_alg, NX_FC_AES, NX_MODE_AES_ECB);
out:
@@ -722,9 +722,9 @@ int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm)
NX_MODE_AES_CTR);
}
-int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm)
+int nx_crypto_ctx_aes_cbc_init(struct crypto_skcipher *tfm)
{
- return nx_crypto_ctx_init(crypto_tfm_ctx(tfm), NX_FC_AES,
+ return nx_crypto_ctx_init(crypto_skcipher_ctx(tfm), NX_FC_AES,
NX_MODE_AES_CBC);
}
@@ -817,7 +817,8 @@ static int nx_remove(struct vio_dev *viodev)
NX_FC_AES, NX_MODE_AES_GCM);
nx_unregister_alg(&nx_ctr3686_aes_alg,
NX_FC_AES, NX_MODE_AES_CTR);
- nx_unregister_alg(&nx_cbc_aes_alg, NX_FC_AES, NX_MODE_AES_CBC);
+ nx_unregister_skcipher(&nx_cbc_aes_alg, NX_FC_AES,
+ NX_MODE_AES_CBC);
nx_unregister_skcipher(&nx_ecb_aes_alg, NX_FC_AES,
NX_MODE_AES_ECB);
}
diff --git a/drivers/crypto/nx/nx.h b/drivers/crypto/nx/nx.h
index 1a839ef21c4f..2e1a3e5e65cb 100644
--- a/drivers/crypto/nx/nx.h
+++ b/drivers/crypto/nx/nx.h
@@ -146,7 +146,7 @@ int nx_crypto_ctx_aes_ccm_init(struct crypto_aead *tfm);
int nx_crypto_ctx_aes_gcm_init(struct crypto_aead *tfm);
int nx_crypto_ctx_aes_xcbc_init(struct crypto_tfm *tfm);
int nx_crypto_ctx_aes_ctr_init(struct crypto_tfm *tfm);
-int nx_crypto_ctx_aes_cbc_init(struct crypto_tfm *tfm);
+int nx_crypto_ctx_aes_cbc_init(struct crypto_skcipher *tfm);
int nx_crypto_ctx_aes_ecb_init(struct crypto_skcipher *tfm);
int nx_crypto_ctx_sha_init(struct crypto_tfm *tfm);
void nx_crypto_ctx_exit(struct crypto_tfm *tfm);
@@ -176,7 +176,7 @@ void nx_debugfs_fini(struct nx_crypto_driver *);
#define NX_PAGE_NUM(x) ((u64)(x) & 0xfffffffffffff000ULL)
-extern struct crypto_alg nx_cbc_aes_alg;
+extern struct skcipher_alg nx_cbc_aes_alg;
extern struct skcipher_alg nx_ecb_aes_alg;
extern struct aead_alg nx_gcm_aes_alg;
extern struct aead_alg nx_gcm4106_aes_alg;
--
2.23.0
next prev parent reply other threads:[~2019-10-13 4:43 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-13 4:39 [PATCH 0/4] crypto: nx - convert to skcipher API Eric Biggers
2019-10-13 4:39 ` [PATCH 1/4] crypto: nx - don't abuse blkcipher_desc to pass iv around Eric Biggers
2019-10-14 12:35 ` Ard Biesheuvel
2019-10-13 4:39 ` [PATCH 2/4] crypto: nx - convert AES-ECB to skcipher API Eric Biggers
2019-10-14 12:38 ` Ard Biesheuvel
2019-10-13 4:39 ` Eric Biggers [this message]
2019-10-14 12:39 ` [PATCH 3/4] crypto: nx - convert AES-CBC " Ard Biesheuvel
2019-10-13 4:39 ` [PATCH 4/4] crypto: nx - convert AES-CTR " Eric Biggers
2019-10-14 12:39 ` Ard Biesheuvel
2019-10-13 6:29 ` [PATCH 0/4] crypto: nx - convert " Ard Biesheuvel
2019-10-13 15:31 ` Ard Biesheuvel
2019-10-13 18:56 ` Eric Biggers
2019-10-13 19:48 ` Ard Biesheuvel
2019-10-18 8:06 ` Herbert Xu
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20191013043918.337113-4-ebiggers@kernel.org \
--to=ebiggers@kernel.org \
--cc=herbert@gondor.apana.org.au \
--cc=leitao@debian.org \
--cc=linux-crypto@vger.kernel.org \
--cc=linuxppc-dev@lists.ozlabs.org \
--cc=nayna@linux.ibm.com \
--cc=pfsmorigo@gmail.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).