net: ena: Destroy correct number of xdp queues upon failure

The ena_setup_and_create_all_xdp_queues() function freed all the
resources upon failure, after creating only xdp_num_queues queues,
instead of freeing just the created ones.

In this patch, the only resources that are freed, are the ones
allocated right before the failure occurs.

Fixes: 548c494 ("net: ena: Implement XDP_TX action")
Signed-off-by: Shahar Itzko <[email protected]>
Signed-off-by: David Arinzon <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>

Author: davidarinzon

drivers/net/ethernet/amazon/ena/ena_netdev.c

@@ -74,6 +74,8 @@ static void ena_unmap_tx_buff(struct ena_ring *tx_ring,
 			      struct ena_tx_buffer *tx_info);
 static int ena_create_io_tx_queues_in_range(struct ena_adapter *adapter,
 					    int first_index, int count);
+static void ena_free_all_io_tx_resources_in_range(struct ena_adapter *adapter,
+						  int first_index, int count);
 
 /* Increase a stat by cnt while holding syncp seqlock on 32bit machines */
 static void ena_increase_stat(u64 *statp, u64 cnt,
@@ -457,23 +459,22 @@ static void ena_init_all_xdp_queues(struct ena_adapter *adapter)
 
 static int ena_setup_and_create_all_xdp_queues(struct ena_adapter *adapter)
 {
+	u32 xdp_first_ring = adapter->xdp_first_ring;
+	u32 xdp_num_queues = adapter->xdp_num_queues;
 	int rc = 0;
 
-	rc = ena_setup_tx_resources_in_range(adapter, adapter->xdp_first_ring,
-					     adapter->xdp_num_queues);
+	rc = ena_setup_tx_resources_in_range(adapter, xdp_first_ring, xdp_num_queues);
 	if (rc)
 		goto setup_err;
 
-	rc = ena_create_io_tx_queues_in_range(adapter,
-					      adapter->xdp_first_ring,
-					      adapter->xdp_num_queues);
+	rc = ena_create_io_tx_queues_in_range(adapter, xdp_first_ring, xdp_num_queues);
 	if (rc)
 		goto create_err;
 
 	return 0;
 
 create_err:
-	ena_free_all_io_tx_resources(adapter);
+	ena_free_all_io_tx_resources_in_range(adapter, xdp_first_ring, xdp_num_queues);
 setup_err:
 	return rc;
 }