[PATCH v2 7/9] net/mlx5: fix next protocol validation after flex item

[Viacheslav Ovsiienko <viacheslavo@nvidia.com>]

On the flow validation some items may check the preceding protocols.
In case of flex item the next protocol is opaque (or can be multiple
ones) we should set neutral value and allow successful validation,
for example, for the combination of flex and following ESP items.

Fixes: a23e9b6e3ee9 ("net/mlx5: handle flex item in flows")
Cc: stable@dpdk.org

Signed-off-by: Viacheslav Ovsiienko <viacheslavo@nvidia.com>
---
 drivers/net/mlx5/mlx5_flow_dv.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_flow_dv.c b/drivers/net/mlx5/mlx5_flow_dv.c
index a51d4dd1a4..b18bb430d7 100644
--- a/drivers/net/mlx5/mlx5_flow_dv.c
+++ b/drivers/net/mlx5/mlx5_flow_dv.c
@@ -8196,6 +8196,8 @@ flow_dv_validate(struct rte_eth_dev *dev, const struct rte_flow_attr *attr,
 							 tunnel != 0, error);
 			if (ret < 0)
 				return ret;
+			/* Reset for next proto, it is unknown. */
+			next_protocol = 0xff;
 			break;
 		case RTE_FLOW_ITEM_TYPE_METER_COLOR:
 			ret = flow_dv_validate_item_meter_color(dev, items,
-- 
2.34.1