This is a note to let you know that I've just added the patch titled
crypto: vmx - Use skcipher for cbc fallback
to the 4.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
crypto-vmx-use-skcipher-for-cbc-fallback.patch
and it can be found in the queue-4.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From c96d0a1c47abd5c4fa544dcedb5fac4d020ac58b Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@xxxxxxxxxxxxxxxxxx>
Date: Wed, 1 Mar 2017 10:58:20 -0300
Subject: crypto: vmx - Use skcipher for cbc fallback
From: Paulo Flabiano Smorigo <pfsmorigo@xxxxxxxxxxxxxxxxxx>
commit c96d0a1c47abd5c4fa544dcedb5fac4d020ac58b upstream.
Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/crypto/vmx/aes_cbc.c | 47 +++++++++++++++++++++----------------------
1 file changed, 24 insertions(+), 23 deletions(-)
--- a/drivers/crypto/vmx/aes_cbc.c
+++ b/drivers/crypto/vmx/aes_cbc.c
@@ -27,11 +27,12 @@
#include <asm/switch_to.h>
#include <crypto/aes.h>
#include <crypto/scatterwalk.h>
+#include <crypto/skcipher.h>
#include "aesp8-ppc.h"
struct p8_aes_cbc_ctx {
- struct crypto_blkcipher *fallback;
+ struct crypto_skcipher *fallback;
struct aes_key enc_key;
struct aes_key dec_key;
};
@@ -39,7 +40,7 @@ struct p8_aes_cbc_ctx {
static int p8_aes_cbc_init(struct crypto_tfm *tfm)
{
const char *alg;
- struct crypto_blkcipher *fallback;
+ struct crypto_skcipher *fallback;
struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm);
if (!(alg = crypto_tfm_alg_name(tfm))) {
@@ -47,8 +48,9 @@ static int p8_aes_cbc_init(struct crypto
return -ENOENT;
}
- fallback =
- crypto_alloc_blkcipher(alg, 0, CRYPTO_ALG_NEED_FALLBACK);
+ fallback = crypto_alloc_skcipher(alg, 0,
+ CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK);
+
if (IS_ERR(fallback)) {
printk(KERN_ERR
"Failed to allocate transformation for '%s': %ld\n",
@@ -56,11 +58,12 @@ static int p8_aes_cbc_init(struct crypto
return PTR_ERR(fallback);
}
printk(KERN_INFO "Using '%s' as fallback implementation.\n",
- crypto_tfm_alg_driver_name((struct crypto_tfm *) fallback));
+ crypto_skcipher_driver_name(fallback));
+
- crypto_blkcipher_set_flags(
+ crypto_skcipher_set_flags(
fallback,
- crypto_blkcipher_get_flags((struct crypto_blkcipher *)tfm));
+ crypto_skcipher_get_flags((struct crypto_skcipher *)tfm));
ctx->fallback = fallback;
return 0;
@@ -71,7 +74,7 @@ static void p8_aes_cbc_exit(struct crypt
struct p8_aes_cbc_ctx *ctx = crypto_tfm_ctx(tfm);
if (ctx->fallback) {
- crypto_free_blkcipher(ctx->fallback);
+ crypto_free_skcipher(ctx->fallback);
ctx->fallback = NULL;
}
}
@@ -91,7 +94,7 @@ static int p8_aes_cbc_setkey(struct cryp
pagefault_enable();
preempt_enable();
- ret += crypto_blkcipher_setkey(ctx->fallback, key, keylen);
+ ret += crypto_skcipher_setkey(ctx->fallback, key, keylen);
return ret;
}
@@ -103,15 +106,14 @@ static int p8_aes_cbc_encrypt(struct blk
struct blkcipher_walk walk;
struct p8_aes_cbc_ctx *ctx =
crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm));
- struct blkcipher_desc fallback_desc = {
- .tfm = ctx->fallback,
- .info = desc->info,
- .flags = desc->flags
- };
if (in_interrupt()) {
- ret = crypto_blkcipher_encrypt(&fallback_desc, dst, src,
- nbytes);
+ SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback);
+ skcipher_request_set_tfm(req, ctx->fallback);
+ skcipher_request_set_callback(req, desc->flags, NULL, NULL);
+ skcipher_request_set_crypt(req, src, dst, nbytes, desc->info);
+ ret = crypto_skcipher_encrypt(req);
+ skcipher_request_zero(req);
} else {
preempt_disable();
pagefault_disable();
@@ -144,15 +146,14 @@ static int p8_aes_cbc_decrypt(struct blk
struct blkcipher_walk walk;
struct p8_aes_cbc_ctx *ctx =
crypto_tfm_ctx(crypto_blkcipher_tfm(desc->tfm));
- struct blkcipher_desc fallback_desc = {
- .tfm = ctx->fallback,
- .info = desc->info,
- .flags = desc->flags
- };
if (in_interrupt()) {
- ret = crypto_blkcipher_decrypt(&fallback_desc, dst, src,
- nbytes);
+ SKCIPHER_REQUEST_ON_STACK(req, ctx->fallback);
+ skcipher_request_set_tfm(req, ctx->fallback);
+ skcipher_request_set_callback(req, desc->flags, NULL, NULL);
+ skcipher_request_set_crypt(req, src, dst, nbytes, desc->info);
+ ret = crypto_skcipher_decrypt(req);
+ skcipher_request_zero(req);
} else {
preempt_disable();
pagefault_disable();
Patches currently in stable-queue which might be from pfsmorigo@xxxxxxxxxxxxxxxxxx are
queue-4.10/crypto-vmx-use-skcipher-for-xts-fallback.patch
queue-4.10/crypto-vmx-use-skcipher-for-cbc-fallback.patch