net/null: fix Rx and Tx queue state

[ upstream commit 9b4b368ef7b9a00978e80fb2ee0beadde10a02de ]

The DPDK framework reports the queue state, which is stored in
dev->data->tx_queue_state and dev->data->rx_queue_state. The
state is maintained by the driver. Users may determine whether
a queue participates in packet forwarding based on the state.
Therefore, the driver needs to modify the queue state in time
according to the actual situation.

Fixes: 9ad9ff4 ("ethdev: add queue state in queried queue information")

Signed-off-by: Jie Hai <haijie1@huawei.com>
Acked-by: Ferruh Yigit <ferruh.yigit@amd.com>

drivers/net/null/rte_eth_null.c

@@ -186,21 +186,36 @@ eth_dev_configure(struct rte_eth_dev *dev __rte_unused)
 static int
 eth_dev_start(struct rte_eth_dev *dev)
 {
+	uint16_t i;
+
 	if (dev == NULL)
 		return -EINVAL;
 
 	dev->data->dev_link.link_status = RTE_ETH_LINK_UP;
+
+	for (i = 0; i < dev->data->nb_rx_queues; i++)
+		dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
+	for (i = 0; i < dev->data->nb_tx_queues; i++)
+		dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STARTED;
+
 	return 0;
 }
 
 static int
 eth_dev_stop(struct rte_eth_dev *dev)
 {
+	uint16_t i;
+
 	if (dev == NULL)
 		return 0;
 
 	dev->data->dev_link.link_status = RTE_ETH_LINK_DOWN;
 
+	for (i = 0; i < dev->data->nb_rx_queues; i++)
+		dev->data->rx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
+	for (i = 0; i < dev->data->nb_tx_queues; i++)
+		dev->data->tx_queue_state[i] = RTE_ETH_QUEUE_STATE_STOPPED;
+
 	return 0;
 }