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crypto/dpaa2_sec: fix offset calculation for GCM

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In case of gcm, output buffer should have aad space
before the actual buffer which needs to be written.
CAAM will not write into the aad anything, it will skip
auth_only_len (aad) and write the buffer afterwards.

Fixes: 37f96eb01b ("crypto/dpaa2_sec: support scatter gather")
Cc: stable@dpdk.org

Signed-off-by: Akhil Goyal <akhil.goyal@nxp.com>
This commit is contained in:
Akhil Goyal 2019-03-27 11:53:32 +00:00
parent fd4f22fbd8
commit a5e05ab643
1 changed files with 4 additions and 4 deletions
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8
drivers/crypto/dpaa2_sec/dpaa2_sec_dpseci.c
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@ -236,8 +236,8 @@ build_authenc_gcm_sg_fd(dpaa2_sec_session *sess,
/* Configure Output SGE for Encap/Decap */
DPAA2_SET_FLE_ADDR(sge, DPAA2_MBUF_VADDR_TO_IOVA(mbuf));
DPAA2_SET_FLE_OFFSET(sge, mbuf->data_off + sym_op->aead.data.offset -
auth_only_len);
DPAA2_SET_FLE_OFFSET(sge, mbuf->data_off +
RTE_ALIGN_CEIL(auth_only_len, 16) - auth_only_len);
sge->length = mbuf->data_len - sym_op->aead.data.offset + auth_only_len;
mbuf = mbuf->next;
@ -400,8 +400,8 @@ build_authenc_gcm_fd(dpaa2_sec_session *sess,
/* Configure Output SGE for Encap/Decap */
DPAA2_SET_FLE_ADDR(sge, DPAA2_MBUF_VADDR_TO_IOVA(dst));
DPAA2_SET_FLE_OFFSET(sge, sym_op->aead.data.offset +
dst->data_off - auth_only_len);
DPAA2_SET_FLE_OFFSET(sge, dst->data_off +
RTE_ALIGN_CEIL(auth_only_len, 16) - auth_only_len);
sge->length = sym_op->aead.data.length + auth_only_len;
if (sess->dir == DIR_ENC) {