net/nfp: free HW ring memzone on queue release

[ upstream commit 15174c4 ]

During Rx/Tx queue setup, memory is reserved for the hardware rings.
This memory zone should subsequently be freed in the queue release
logic. This commit also adds a call to the release logic in the
dev_close() callback so that the ring memzone may be freed during port
close too.

Fixes: b812daa ("nfp: add Rx and Tx")

Signed-off-by: Heinrich Kuhn <heinrich.kuhn@corigine.com>
Signed-off-by: Simon Horman <simon.horman@corigine.com>

drivers/net/nfp/nfp_ethdev.c

@@ -302,11 +302,13 @@ nfp_net_close(struct rte_eth_dev *dev)
 	for (i = 0; i < dev->data->nb_tx_queues; i++) {
 		this_tx_q = (struct nfp_net_txq *)dev->data->tx_queues[i];
 		nfp_net_reset_tx_queue(this_tx_q);
+		nfp_net_tx_queue_release(dev, i);
 	}
 
 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
 		this_rx_q = (struct nfp_net_rxq *)dev->data->rx_queues[i];
 		nfp_net_reset_rx_queue(this_rx_q);
+		nfp_net_rx_queue_release(dev, i);
 	}
 
 	/* Cancel possible impending LSC work here before releasing the port*/

drivers/net/nfp/nfp_ethdev_vf.c

@@ -219,11 +219,13 @@ nfp_netvf_close(struct rte_eth_dev *dev)
 	for (i = 0; i < dev->data->nb_tx_queues; i++) {
 		this_tx_q =  (struct nfp_net_txq *)dev->data->tx_queues[i];
 		nfp_net_reset_tx_queue(this_tx_q);
+		nfp_net_tx_queue_release(dev, i);
 	}
 
 	for (i = 0; i < dev->data->nb_rx_queues; i++) {
 		this_rx_q =  (struct nfp_net_rxq *)dev->data->rx_queues[i];
 		nfp_net_reset_rx_queue(this_rx_q);
+		nfp_net_rx_queue_release(dev, i);
 	}
 
 	rte_intr_disable(pci_dev->intr_handle);

drivers/net/nfp/nfp_rxtx.c

@@ -470,6 +470,7 @@ nfp_net_rx_queue_release(struct rte_eth_dev *dev, uint16_t queue_idx)
 
 	if (rxq) {
 		nfp_net_rx_queue_release_mbufs(rxq);
+		rte_eth_dma_zone_free(dev, "rx_ring", queue_idx);
 		rte_free(rxq->rxbufs);
 		rte_free(rxq);
 	}
@@ -660,6 +661,7 @@ nfp_net_tx_queue_release(struct rte_eth_dev *dev, uint16_t queue_idx)
 
 	if (txq) {
 		nfp_net_tx_queue_release_mbufs(txq);
+		rte_eth_dma_zone_free(dev, "tx_ring", queue_idx);
 		rte_free(txq->txbufs);
 		rte_free(txq);
 	}