crypto/dpaa_sec: fix chained FD length in raw datapath

[ upstream commit b5e761f ]

DPAA sec raw driver is calculating the wrong lengths while
creating the FD for chain.
This patch fixes lengths for chain FD.

Fixes: 78156d3 ("crypto/dpaa_sec: support authonly and chain with raw API")

Signed-off-by: Gagandeep Singh <g.singh@nxp.com>
Acked-by: Akhil Goyal <gakhil@marvell.com>

drivers/crypto/dpaa_sec/dpaa_sec_raw_dp.c

@@ -1,5 +1,5 @@
 /* SPDX-License-Identifier: BSD-3-Clause
- * Copyright 2021 NXP
+ * Copyright 2021-2022 NXP
  */
 
 #include <rte_byteorder.h>
@@ -397,15 +397,17 @@ build_dpaa_raw_dp_chain_fd(uint8_t *drv_ctx,
 	unsigned int i;
 	uint16_t auth_hdr_len = ofs.ofs.cipher.head -
 				ofs.ofs.auth.head;
-	uint16_t auth_tail_len = ofs.ofs.auth.tail;
-	uint32_t auth_only_len = (auth_tail_len << 16) | auth_hdr_len;
+	uint16_t auth_tail_len;
+	uint32_t auth_only_len;
 	int data_len = 0, auth_len = 0, cipher_len = 0;
 
 	for (i = 0; i < sgl->num; i++)
 		data_len += sgl->vec[i].len;
 
 	cipher_len = data_len - ofs.ofs.cipher.head - ofs.ofs.cipher.tail;
 	auth_len = data_len - ofs.ofs.auth.head - ofs.ofs.auth.tail;
+	auth_tail_len = auth_len - cipher_len - auth_hdr_len;
+	auth_only_len = (auth_tail_len << 16) | auth_hdr_len;
 
 	if (sgl->num > MAX_SG_ENTRIES) {
 		DPAA_SEC_DP_ERR("Cipher-Auth: Max sec segs supported is %d",
@@ -448,6 +450,7 @@ build_dpaa_raw_dp_chain_fd(uint8_t *drv_ctx,
 			qm_sg_entry_set64(sg, dest_sgl->vec[i].iova);
 			sg->length = dest_sgl->vec[i].len;
 		}
+		sg->length -= ofs.ofs.cipher.tail;
 	} else {
 		qm_sg_entry_set64(sg, sgl->vec[0].iova);
 		sg->length = sgl->vec[0].len - ofs.ofs.cipher.head;
@@ -460,6 +463,7 @@ build_dpaa_raw_dp_chain_fd(uint8_t *drv_ctx,
 			qm_sg_entry_set64(sg, sgl->vec[i].iova);
 			sg->length = sgl->vec[i].len;
 		}
+		sg->length -= ofs.ofs.cipher.tail;
 	}
 
 	if (is_encode(ses)) {