crypto/aesni_gcm: remove unneeded J0 calculation

When IV size is 12, padding to 16 bytes is required
and the LSB must be set to 1, according to the spec.
However, the Multi-buffer library is already doing this,
so it is not necessary to do it in the PMD.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Marko Kovacevic <marko.kovacevic@intel.com>

diff --git a/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c b/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
index 752e0cd..4fba49e 100644 (file)
--- a/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
+++ b/drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
@@ -225,17 +225,8 @@ process_gcm_crypto_op(struct aesni_gcm_qp *qp, struct rte_crypto_op *op,
 
        iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
                                session->iv.offset);
-       /*
-        * GCM working in 12B IV mode => 16B pre-counter block we need
-        * to set BE LSB to 1, driver expects that 16B is allocated
-        */
-       if (session->iv.length == 12) {
-               uint32_t *iv_padd = (uint32_t *)&(iv_ptr[12]);
-               *iv_padd = rte_bswap32(1);
-       }
 
        if (session->op == AESNI_GCM_OP_AUTHENTICATED_ENCRYPTION) {
-
                qp->ops[session->key].init(&session->gdata_key,
                                &qp->gdata_ctx,
                                iv_ptr,