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Message-Id: <20110412143549.730291946@clark.kroah.org>
Date: Tue, 12 Apr 2011 07:34:06 -0700
From: Greg KH <gregkh@...e.de>
To: linux-kernel@...r.kernel.org, stable@...nel.org
Cc: stable-review@...nel.org, torvalds@...ux-foundation.org,
akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
Adrian Hoban <adrian.hoban@...el.com>,
Aidan OMahony <aidan.o.mahony@...el.com>,
Gabriele Paoloni <gabriele.paoloni@...el.com>,
Tadeusz Struk <tadeusz.struk@...el.com>,
Herbert Xu <herbert@...dor.apana.org.au>
Subject: [017/105] crypto: aesni-intel - fixed problem with packets that are not multiple of 64bytes
2.6.38-stable review patch. If anyone has any objections, please let us know.
------------------
From: Tadeusz Struk <tadeusz.struk@...el.com>
commit 60af520cf264ea26b2af3a6871bbd71850522aea upstream.
This patch fixes problem with packets that are not multiple of 64bytes.
Signed-off-by: Adrian Hoban <adrian.hoban@...el.com>
Signed-off-by: Aidan O'Mahony <aidan.o.mahony@...el.com>
Signed-off-by: Gabriele Paoloni <gabriele.paoloni@...el.com>
Signed-off-by: Tadeusz Struk <tadeusz.struk@...el.com>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...e.de>
---
arch/x86/crypto/aesni-intel_asm.S | 5 ++++-
arch/x86/crypto/aesni-intel_glue.c | 14 ++++++++++++--
2 files changed, 16 insertions(+), 3 deletions(-)
--- a/arch/x86/crypto/aesni-intel_asm.S
+++ b/arch/x86/crypto/aesni-intel_asm.S
@@ -1612,6 +1612,7 @@ _zero_cipher_left_encrypt:
movdqa SHUF_MASK(%rip), %xmm10
PSHUFB_XMM %xmm10, %xmm0
+
ENCRYPT_SINGLE_BLOCK %xmm0, %xmm1 # Encrypt(K, Yn)
sub $16, %r11
add %r13, %r11
@@ -1634,7 +1635,9 @@ _zero_cipher_left_encrypt:
# GHASH computation for the last <16 byte block
sub %r13, %r11
add $16, %r11
- PSHUFB_XMM %xmm10, %xmm1
+
+ movdqa SHUF_MASK(%rip), %xmm10
+ PSHUFB_XMM %xmm10, %xmm0
# shuffle xmm0 back to output as ciphertext
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -828,9 +828,15 @@ static int rfc4106_init(struct crypto_tf
struct cryptd_aead *cryptd_tfm;
struct aesni_rfc4106_gcm_ctx *ctx = (struct aesni_rfc4106_gcm_ctx *)
PTR_ALIGN((u8 *)crypto_tfm_ctx(tfm), AESNI_ALIGN);
+ struct crypto_aead *cryptd_child;
+ struct aesni_rfc4106_gcm_ctx *child_ctx;
cryptd_tfm = cryptd_alloc_aead("__driver-gcm-aes-aesni", 0, 0);
if (IS_ERR(cryptd_tfm))
return PTR_ERR(cryptd_tfm);
+
+ cryptd_child = cryptd_aead_child(cryptd_tfm);
+ child_ctx = aesni_rfc4106_gcm_ctx_get(cryptd_child);
+ memcpy(child_ctx, ctx, sizeof(*ctx));
ctx->cryptd_tfm = cryptd_tfm;
tfm->crt_aead.reqsize = sizeof(struct aead_request)
+ crypto_aead_reqsize(&cryptd_tfm->base);
@@ -925,6 +931,9 @@ static int rfc4106_set_key(struct crypto
int ret = 0;
struct crypto_tfm *tfm = crypto_aead_tfm(parent);
struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(parent);
+ struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
+ struct aesni_rfc4106_gcm_ctx *child_ctx =
+ aesni_rfc4106_gcm_ctx_get(cryptd_child);
u8 *new_key_mem = NULL;
if (key_len < 4) {
@@ -968,6 +977,7 @@ static int rfc4106_set_key(struct crypto
goto exit;
}
ret = rfc4106_set_hash_subkey(ctx->hash_subkey, key, key_len);
+ memcpy(child_ctx, ctx, sizeof(*ctx));
exit:
kfree(new_key_mem);
return ret;
@@ -999,7 +1009,6 @@ static int rfc4106_encrypt(struct aead_r
int ret;
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm);
- struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
if (!irq_fpu_usable()) {
struct aead_request *cryptd_req =
@@ -1008,6 +1017,7 @@ static int rfc4106_encrypt(struct aead_r
aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base);
return crypto_aead_encrypt(cryptd_req);
} else {
+ struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
kernel_fpu_begin();
ret = cryptd_child->base.crt_aead.encrypt(req);
kernel_fpu_end();
@@ -1020,7 +1030,6 @@ static int rfc4106_decrypt(struct aead_r
int ret;
struct crypto_aead *tfm = crypto_aead_reqtfm(req);
struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm);
- struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
if (!irq_fpu_usable()) {
struct aead_request *cryptd_req =
@@ -1029,6 +1038,7 @@ static int rfc4106_decrypt(struct aead_r
aead_request_set_tfm(cryptd_req, &ctx->cryptd_tfm->base);
return crypto_aead_decrypt(cryptd_req);
} else {
+ struct crypto_aead *cryptd_child = cryptd_aead_child(ctx->cryptd_tfm);
kernel_fpu_begin();
ret = cryptd_child->base.crt_aead.decrypt(req);
kernel_fpu_end();
--
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