[dpdk-dev] [PATCH v3 1/2] compress/qat: overflow catch for stateless compression

[Artur Trybula]

This patch adds out-of-space recoverable feature for stateless
compression scenario to QuickAssist compressdev driver

Signed-off-by: Artur Trybula <arturx.tryb...@intel.com>
---
 drivers/compress/qat/qat_comp.c | 28 +++++++++++++++++++++++++---
 1 file changed, 25 insertions(+), 3 deletions(-)

diff --git a/drivers/compress/qat/qat_comp.c b/drivers/compress/qat/qat_comp.c
index 8717b7432..533e34f6b 100644
--- a/drivers/compress/qat/qat_comp.c
+++ b/drivers/compress/qat/qat_comp.c
@@ -324,10 +324,32 @@ qat_comp_process_response(void **op, uint8_t *resp, void 
*op_cookie,
                    (!cmp_err_code && xlat_err_code == ERR_CODE_OVERFLOW_ERROR)
                                ||
                    (cmp_err_code == ERR_CODE_OVERFLOW_ERROR &&
-                    xlat_err_code == ERR_CODE_OVERFLOW_ERROR))
-                       rx_op->status =
+                    xlat_err_code == ERR_CODE_OVERFLOW_ERROR)){
+
+                       struct icp_qat_fw_resp_comp_pars *comp_resp =
+         (struct icp_qat_fw_resp_comp_pars *)&resp_msg->comp_resp_pars;
+
+                       /* handle recoverable out-of-buffer condition */
+                       /* in stateless compression scenario */
+                       if (comp_resp->input_byte_counter) {
+                               if ((qat_xform->qat_comp_request_type
+                               == QAT_COMP_REQUEST_FIXED_COMP_STATELESS) ||
+                                   (qat_xform->qat_comp_request_type
+                               == QAT_COMP_REQUEST_DYNAMIC_COMP_STATELESS)) {
+
+                                       rx_op->status =
+                               RTE_COMP_OP_STATUS_OUT_OF_SPACE_RECOVERABLE;
+                                       rx_op->consumed =
+                                               comp_resp->input_byte_counter;
+                                       rx_op->produced =
+                                               comp_resp->output_byte_counter;
+                               } else
+                                       rx_op->status =
+                               RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
+                       } else
+                               rx_op->status =
                                RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
-               else
+               } else
                        rx_op->status = RTE_COMP_OP_STATUS_ERROR;
 
                ++(*dequeue_err_count);
-- 
2.17.1