[dpdk-dev] [PATCH v2 1/3] crypto/aesni_gcm: fix J0 padding bytes for GCM

[Arek Kusztal]

This commit fixes pre-counter block (J0) padding by clearing
four most significant bytes before setting initial counter value.

Fixes: b2bb3597470c ("crypto/aesni_gcm: move pre-counter block to driver")

Signed-off-by: Arek Kusztal <arkadiuszx.kusz...@intel.com>
---
 drivers/crypto/aesni_gcm/aesni_gcm_pmd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c 
b/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
index dba5e15..af3d60f 100644
--- a/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
+++ b/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
@@ -40,6 +40,7 @@
 #include <rte_vdev.h>
 #include <rte_malloc.h>
 #include <rte_cpuflags.h>
+#include <rte_byteorder.h>
 
 #include "aesni_gcm_pmd_private.h"
 
@@ -241,7 +242,8 @@ process_gcm_crypto_op(struct aesni_gcm_qp *qp, struct 
rte_crypto_sym_op *op,
         * to set BE LSB to 1, driver expects that 16B is allocated
         */
        if (op->cipher.iv.length == 12) {
-               op->cipher.iv.data[15] = 1;
+               uint32_t *iv_padd = (uint32_t *)&op->cipher.iv.data[12];
+               *iv_padd = rte_bswap32(1);
        }
 
        if (op->auth.aad.length != 12 && op->auth.aad.length != 8 &&
-- 
2.1.0