[dpdk-dev] [PATCH v3 01/10] net/bnxt: handle flow create failure

Ajit Khaparde ajit.khaparde at broadcom.com
Tue Jan 14 06:14:26 CET 2020


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

If flow create fails due to not enough filter resources,
driver does not populate the rte_flow_error using
rte_flow_error_set().

Since "rte_errno" could have garbage value and is not relaiable,
it could cause a segfault in the stack in port_flow_complain().

Fix it to set rte_flow_error using rte_flow_error_set()
when flow create fails due to not enough filter resources.

Signed-off-by: Kalesh AP <kalesh-anakkur.purayil at broadcom.com>
Reviewed-by: Ajit Khaparde <ajit.khaparde at broadcom.com>
---
 drivers/net/bnxt/bnxt_flow.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/bnxt/bnxt_flow.c b/drivers/net/bnxt/bnxt_flow.c
index cde1fa41c..5564c5363 100644
--- a/drivers/net/bnxt/bnxt_flow.c
+++ b/drivers/net/bnxt/bnxt_flow.c
@@ -1702,7 +1702,9 @@ bnxt_flow_create(struct rte_eth_dev *dev,
 
 	filter = bnxt_get_unused_filter(bp);
 	if (filter == NULL) {
-		PMD_DRV_LOG(ERR, "Not enough resources for a new flow.\n");
+		rte_flow_error_set(error, ENOSPC,
+				   RTE_FLOW_ERROR_TYPE_HANDLE, NULL,
+				   "Not enough resources for a new flow");
 		goto free_flow;
 	}
 
-- 
2.21.0 (Apple Git-122.2)



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