net/ena: fix cleaning HW IO rings configuration

When queues are stopped release Tx buffers.
During start initialize array of empty Tx/Rx reqs with default values.

Fixes: df238f84c0a2 ("net/ena: recreate HW IO rings on start and stop")
Cc: stable@dpdk.org
Signed-off-by: Rafal Kozik <rk@semihalf.com>
Acked-by: Michal Krawczyk <mk@semihalf.com>

diff --git a/drivers/net/ena/ena_ethdev.c b/drivers/net/ena/ena_ethdev.c
index 05a4fbe..3690afe 100644 (file)
--- a/drivers/net/ena/ena_ethdev.c
+++ b/drivers/net/ena/ena_ethdev.c
@@ -1096,6 +1096,7 @@ static int ena_create_io_queue(struct ena_ring *ring)
                { ENA_ADMIN_PLACEMENT_POLICY_HOST,
                  0, 0, 0, 0, 0 };
        uint16_t ena_qid;
+       unsigned int i;
        int rc;
 
        adapter = ring->adapter;
@@ -1106,10 +1107,14 @@ static int ena_create_io_queue(struct ena_ring *ring)
                ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_TX;
                ctx.mem_queue_type = ena_dev->tx_mem_queue_type;
                ctx.queue_size = adapter->tx_ring_size;
+               for (i = 0; i < ring->ring_size; i++)
+                       ring->empty_tx_reqs[i] = i;
        } else {
                ena_qid = ENA_IO_RXQ_IDX(ring->id);
                ctx.direction = ENA_COM_IO_QUEUE_DIRECTION_RX;
                ctx.queue_size = adapter->rx_ring_size;
+               for (i = 0; i < ring->ring_size; i++)
+                       ring->empty_rx_reqs[i] = i;
        }
        ctx.qid = ena_qid;
        ctx.msix_vector = -1; /* interrupts not used */
@@ -1152,6 +1157,8 @@ static void ena_free_io_queues_all(struct ena_adapter *adapter)
        for (i = 0; i < nb_txq; ++i) {
                ena_qid = ENA_IO_TXQ_IDX(i);
                ena_com_destroy_io_queue(ena_dev, ena_qid);
+
+               ena_tx_queue_release_bufs(&adapter->tx_ring[i]);
        }
 
        for (i = 0; i < nb_rxq; ++i) {