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crypto/aesni_gcm: remove unneeded J0 calculation

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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>
This commit is contained in:
Pablo de Lara 2018-08-14 01:53:30 +01:00 committed by Akhil Goyal
parent d0fe8c48a4
commit c7c29f1058
1 changed files with 0 additions and 9 deletions
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9
drivers/crypto/aesni_gcm/aesni_gcm_pmd.c
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@ -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,