Revert "crypto: talitos - add IPsec ESN support"

This reverts commit e763eb699be723fb41af818118068c6b3afdaf8d.

Current IPsec ESN implementation for authencesn(cbc(aes), hmac(sha))
(separate encryption and integrity algorithms) does not conform
to RFC4303.

ICV is generated by hashing the sequence
SPI, SeqNum-High, SeqNum-Low, IV, Payload
instead of
SPI, SeqNum-Low, IV, Payload, SeqNum-High.

Cc: <stable@vger.kernel.org> # 3.8, 3.7
Reported-by: Chaoxing Lin <Chaoxing.Lin@ultra-3eti.com>
Signed-off-by: Horia Geanta <horia.geanta@freescale.com>
Reviewed-by: Kim Phillips <kim.phillips@freescale.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index 09b184a..5b2b5e6 100644 (file)
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -38,7 +38,6 @@
 #include <linux/spinlock.h>
 #include <linux/rtnetlink.h>
 #include <linux/slab.h>
-#include <linux/string.h>
 
 #include <crypto/algapi.h>
 #include <crypto/aes.h>
@@ -1974,11 +1973,7 @@ struct talitos_alg_template {
 };
 
 static struct talitos_alg_template driver_algs[] = {
-       /*
-        * AEAD algorithms. These use a single-pass ipsec_esp descriptor.
-        * authencesn(*,*) is also registered, although not present
-        * explicitly here.
-        */
+       /* AEAD algorithms.  These use a single-pass ipsec_esp descriptor */
        {       .type = CRYPTO_ALG_TYPE_AEAD,
                .alg.crypto = {
                        .cra_name = "authenc(hmac(sha1),cbc(aes))",
@@ -2820,9 +2815,7 @@ static int talitos_probe(struct platform_device *ofdev)
                if (hw_supports(dev, driver_algs[i].desc_hdr_template)) {
                        struct talitos_crypto_alg *t_alg;
                        char *name = NULL;
-                       bool authenc = false;
 
-authencesn:
                        t_alg = talitos_alg_alloc(dev, &driver_algs[i]);
                        if (IS_ERR(t_alg)) {
                                err = PTR_ERR(t_alg);
@@ -2837,8 +2830,6 @@ authencesn:
                                err = crypto_register_alg(
                                                &t_alg->algt.alg.crypto);
                                name = t_alg->algt.alg.crypto.cra_driver_name;
-                               authenc = authenc ? !authenc :
-                                         !(bool)memcmp(name, "authenc", 7);
                                break;
                        case CRYPTO_ALG_TYPE_AHASH:
                                err = crypto_register_ahash(
@@ -2851,25 +2842,8 @@ authencesn:
                                dev_err(dev, "%s alg registration failed\n",
                                        name);
                                kfree(t_alg);
-                       } else {
+                       } else
                                list_add_tail(&t_alg->entry, &priv->alg_list);
-                               if (authenc) {
-                                       struct crypto_alg *alg =
-                                               &driver_algs[i].alg.crypto;
-
-                                       name = alg->cra_name;
-                                       memmove(name + 10, name + 7,
-                                               strlen(name) - 7);
-                                       memcpy(name + 7, "esn", 3);
-
-                                       name = alg->cra_driver_name;
-                                       memmove(name + 10, name + 7,
-                                               strlen(name) - 7);
-                                       memcpy(name + 7, "esn", 3);
-
-                                       goto authencesn;
-                               }
-                       }
                }
        }
        if (!list_empty(&priv->alg_list))