[dpdk-dev] [PATCH v2] net/mlx5: fix adjust priority for drop queue

[Nelio Laranjeiro]

Drop queue should also adjust their priority according the most specific
layer in the pattern they are matching to avoid dropping all the traffic.

Fixes: 8086cf08b2f0 ("net/mlx5: handle RSS hash configuration in RSS flow")

Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro at 6wind.com>

---

Changes in v2:

 * Reorder the if, else if, else statement to improve readability
---
 drivers/net/mlx5/mlx5_flow.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index 26cf593af..f392f1f65 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -1174,9 +1174,17 @@ priv_flow_convert(struct priv *priv,
 	 * Last step. Complete missing specification to reach the RSS
 	 * configuration.
 	 */
-	if (parser->queues_n > 1) {
+	if (parser->drop) {
+		/*
+		 * Drop queue priority needs to be adjusted to
+		 * their most specific layer priority.
+		 */
+		parser->drop_q.ibv_attr->priority =
+			attr->priority +
+			hash_rxq_init[parser->layer].flow_priority;
+	} else if (parser->queues_n > 1) {
 		priv_flow_convert_finalise(priv, parser);
-	} else if (!parser->drop) {
+	} else {
 		/*
 		 * Action queue have their priority overridden with
 		 * Ethernet priority, this priority needs to be adjusted to
-- 
2.11.0