[dpdk-dev] [PATCH 4/5] net/bnxt: fix to set flow error when filter create fails

[Kalesh A P <kalesh-anakkur.purayil@broadcom.com>]

From: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>

If set_em_filter/set_ntuple_filter cmds fails for some reason,
driver is not filling the "rte_flow_error" string buffer.
Same is the case when flow create fails due to an already
existing mark id for the new flow id created.
This leads to a crash in testpmd while trying to print the
error message.

Fixes: 5c1171c97216 ("net/bnxt: refactor filter/flow")
Fixes: 9db66782bd06 ("net/bnxt: fix supporting zero mark ID with RSS action")
Cc: stable@dpdk.org

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Reviewed-by: Ajit Kumar Khaparde <ajit.khaparde@broadcom.com>
---
 drivers/net/bnxt/bnxt_flow.c | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

diff --git a/drivers/net/bnxt/bnxt_flow.c b/drivers/net/bnxt/bnxt_flow.c
index 19bc66a..499dcdf 100644
--- a/drivers/net/bnxt/bnxt_flow.c
+++ b/drivers/net/bnxt/bnxt_flow.c
@@ -1786,12 +1786,24 @@ bnxt_flow_create(struct rte_eth_dev *dev,
 		filter->enables |=
 			HWRM_CFA_EM_FLOW_ALLOC_INPUT_ENABLES_L2_FILTER_ID;
 		ret = bnxt_hwrm_set_em_filter(bp, filter->dst_id, filter);
+		if (ret != 0) {
+			rte_flow_error_set(error, -ret,
+					   RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+					   "Failed to create EM filter");
+			goto free_filter;
+		}
 	}
 
 	if (filter->filter_type == HWRM_CFA_NTUPLE_FILTER) {
 		filter->enables |=
 			HWRM_CFA_NTUPLE_FILTER_ALLOC_INPUT_ENABLES_L2_FILTER_ID;
 		ret = bnxt_hwrm_set_ntuple_filter(bp, filter->dst_id, filter);
+		if (ret != 0) {
+			rte_flow_error_set(error, -ret,
+					   RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+					   "Failed to create ntuple filter");
+			goto free_filter;
+		}
 	}
 
 	vnic = find_matching_vnic(bp, filter);
@@ -1817,10 +1829,10 @@ bnxt_flow_create(struct rte_eth_dev *dev,
 			 */
 			flow_id = filter->flow_id & BNXT_FLOW_ID_MASK;
 			if (bp->mark_table[flow_id].valid) {
-				PMD_DRV_LOG(ERR,
-					    "Entry for Mark id 0x%x occupied"
-					    " flow id 0x%x\n",
-					    filter->mark, filter->flow_id);
+				rte_flow_error_set(error, EEXIST,
+						   RTE_FLOW_ERROR_TYPE_HANDLE,
+						   NULL,
+						   "Flow with mark id exists");
 				goto free_filter;
 			}
 			bp->mark_table[flow_id].valid = true;
-- 
2.10.1