Revert "crypto: caam - add IPsec ESN support"

This reverts commit 891104ed008e8646c7860fe5bc70b0aac55dcc6c.

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/caam/caamalg.c b/drivers/crypto/caam/caamalg.c
index b2a0a07..cf268b1 100644 (file)
--- a/drivers/crypto/caam/caamalg.c
+++ b/drivers/crypto/caam/caamalg.c
@@ -1650,11 +1650,7 @@ struct caam_alg_template {
 };
 
 static struct caam_alg_template driver_algs[] = {
-       /*
-        * single-pass ipsec_esp descriptor
-        * authencesn(*,*) is also registered, although not present
-        * explicitly here.
-        */
+       /* single-pass ipsec_esp descriptor */
        {
                .name = "authenc(hmac(md5),cbc(aes))",
                .driver_name = "authenc-hmac-md5-cbc-aes-caam",
@@ -2217,9 +2213,7 @@ static int __init caam_algapi_init(void)
        for (i = 0; i < ARRAY_SIZE(driver_algs); i++) {
                /* TODO: check if h/w supports alg */
                struct caam_crypto_alg *t_alg;
-               bool done = false;
 
-authencesn:
                t_alg = caam_alg_alloc(ctrldev, &driver_algs[i]);
                if (IS_ERR(t_alg)) {
                        err = PTR_ERR(t_alg);
@@ -2233,25 +2227,8 @@ authencesn:
                        dev_warn(ctrldev, "%s alg registration failed\n",
                                t_alg->crypto_alg.cra_driver_name);
                        kfree(t_alg);
-               } else {
+               } else
                        list_add_tail(&t_alg->entry, &priv->alg_list);
-                       if (driver_algs[i].type == CRYPTO_ALG_TYPE_AEAD &&
-                           !memcmp(driver_algs[i].name, "authenc", 7) &&
-                           !done) {
-                               char *name;
-
-                               name = driver_algs[i].name;
-                               memmove(name + 10, name + 7, strlen(name) - 7);
-                               memcpy(name + 7, "esn", 3);
-
-                               name = driver_algs[i].driver_name;
-                               memmove(name + 10, name + 7, strlen(name) - 7);
-                               memcpy(name + 7, "esn", 3);
-
-                               done = true;
-                               goto authencesn;
-                       }
-               }
        }
        if (!list_empty(&priv->alg_list))
                dev_info(ctrldev, "%s algorithms registered in /proc/crypto\n",

diff --git a/drivers/crypto/caam/compat.h b/drivers/crypto/caam/compat.h
index cf15e78..762aeff 100644 (file)
--- a/drivers/crypto/caam/compat.h
+++ b/drivers/crypto/caam/compat.h
@@ -23,7 +23,6 @@
 #include <linux/types.h>
 #include <linux/debugfs.h>
 #include <linux/circ_buf.h>
-#include <linux/string.h>
 #include <net/xfrm.h>
 
 #include <crypto/algapi.h>