[dpdk-dev] [PATCH v3 03/11] net/mlx5: fix RSS flow action bounds check

[Adrien Mazarguil <adrien.mazarguil@6wind.com>]

The number of queues provided by the application is not checked against
parser's supported maximum.

Fixes: 3d821d6fea40 ("net/mlx5: support RSS action flow rule")
Cc: stable@dpdk.org
Cc: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>

Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
Acked-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
---
 drivers/net/mlx5/mlx5_flow.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow.c b/drivers/net/mlx5/mlx5_flow.c
index e6af3243d..f051fbef5 100644
--- a/drivers/net/mlx5/mlx5_flow.c
+++ b/drivers/net/mlx5/mlx5_flow.c
@@ -16,6 +16,7 @@
 #pragma GCC diagnostic error "-Wpedantic"
 #endif
 
+#include <rte_common.h>
 #include <rte_ethdev_driver.h>
 #include <rte_flow.h>
 #include <rte_flow_driver.h>
@@ -713,6 +714,14 @@ mlx5_flow_convert_actions(struct rte_eth_dev *dev,
 					return -rte_errno;
 				}
 			}
+			if (rss->num > RTE_DIM(parser->queues)) {
+				rte_flow_error_set(error, EINVAL,
+						   RTE_FLOW_ERROR_TYPE_ACTION,
+						   actions,
+						   "too many queues for RSS"
+						   " context");
+				return -rte_errno;
+			}
 			for (n = 0; n < rss->num; ++n) {
 				if (rss->queue[n] >= priv->rxqs_n) {
 					rte_flow_error_set(error, EINVAL,
-- 
2.11.0