[PATCH 1/2] net/mlx5: fix miss LRO validation in RxQ setup

[Michael Baum <michaelba@nvidia.com>]

The mlx5_rx_queue_setup() gets from user the LRO offload.

When LRO is configured, the LRO flag in rxq_data is set to 1.

This patch adds validation to make sure the LRO is supported.

Fixes: 17ed314 ("net/mlx5: allow LRO per Rx queue")
Cc: matan@mellanox.com
Cc: stable@dpdk.org

Signed-off-by: Michael Baum <michaelba@nvidia.com>
Acked-by: Matan Azrad <matan@nvidia.com>
---
 drivers/net/mlx5/mlx5_rxq.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/net/mlx5/mlx5_rxq.c b/drivers/net/mlx5/mlx5_rxq.c
index 981c296f29..a2d03f9f67 100644
--- a/drivers/net/mlx5/mlx5_rxq.c
+++ b/drivers/net/mlx5/mlx5_rxq.c
@@ -842,6 +842,14 @@ mlx5_rx_queue_setup(struct rte_eth_dev *dev, uint16_t idx, uint16_t desc,
 			    dev->data->dev_conf.rxmode.offloads;
 	bool is_extmem = false;
 
+	if ((offloads & RTE_ETH_RX_OFFLOAD_TCP_LRO) &&
+	    !priv->sh->dev_cap.lro_supported) {
+		DRV_LOG(ERR,
+			"Port %u queue %u LRO is configured but not supported.",
+			dev->data->port_id, idx);
+		rte_errno = EINVAL;
+		return -rte_errno;
+	}
 	if (mp) {
 		/*
 		 * The parameters should be checked on rte_eth_dev layer.
-- 
2.25.1