[dpdk-dev] [PATCH] crypto/qat: fix IV zero physical address

[Arek Kusztal]

This commit fixes zero physical address when IV not set

Fixes: 1703e94ac5ce ("qat: add driver for QuickAssist devices")

Signed-off-by: Arek Kusztal <arkadiuszx.kusz...@intel.com>
---
 drivers/crypto/qat/qat_crypto.c | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/drivers/crypto/qat/qat_crypto.c b/drivers/crypto/qat/qat_crypto.c
index b9baf36..362eb9d 100644
--- a/drivers/crypto/qat/qat_crypto.c
+++ b/drivers/crypto/qat/qat_crypto.c
@@ -971,17 +971,24 @@ qat_write_hw_desc_entry(struct rte_crypto_op *op, uint8_t 
*out_msg,
                }
 
                /* copy IV into request if it fits */
-               if (op->sym->cipher.iv.length && (op->sym->cipher.iv.length <=
-                               sizeof(cipher_param->u.cipher_IV_array))) {
-                       rte_memcpy(cipher_param->u.cipher_IV_array,
-                                       op->sym->cipher.iv.data,
-                                       op->sym->cipher.iv.length);
-               } else {
-                       ICP_QAT_FW_LA_CIPH_IV_FLD_FLAG_SET(
-                                       qat_req->comn_hdr.serv_specif_flags,
-                                       ICP_QAT_FW_CIPH_IV_64BIT_PTR);
-                       cipher_param->u.s.cipher_IV_ptr =
-                                       op->sym->cipher.iv.phys_addr;
+               /*
+                * If IV length is zero do not copy anything but still
+                * use request descriptor embedded IV
+                *
+                */
+               if (op->sym->cipher.iv.length) {
+                       if (op->sym->cipher.iv.length <=
+                                       
sizeof(cipher_param->u.cipher_IV_array)) {
+                               rte_memcpy(cipher_param->u.cipher_IV_array,
+                                               op->sym->cipher.iv.data,
+                                               op->sym->cipher.iv.length);
+                       } else {
+                               ICP_QAT_FW_LA_CIPH_IV_FLD_FLAG_SET(
+                                               
qat_req->comn_hdr.serv_specif_flags,
+                                               ICP_QAT_FW_CIPH_IV_64BIT_PTR);
+                               cipher_param->u.s.cipher_IV_ptr =
+                                               op->sym->cipher.iv.phys_addr;
+                       }
                }
                min_ofs = cipher_ofs;
        }
-- 
2.1.0