net/mlx5: Consider tx_enabled in all modes on remap

[ Upstream commit dc798b4c ]

The tx_enabled lag event field is used to determine whether a slave is
active.
Current logic uses this value only if the mode is active-backup.

However, LACP mode, although considered a load balancing mode, can mark
a slave as inactive in certain situations (e.g., LACP timeout).

This fix takes the tx_enabled value into account when remapping, with
no respect to the LAG mode (this should not affect the behavior in XOR
mode, since in this mode both slaves are marked as active).

Fixes: 7907f23a (net/mlx5: Implement RoCE LAG feature)
Signed-off-by: Aviv Heller <avivh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/net/ethernet/mellanox/mlx5/core/lag.c

@@ -157,22 +157,17 @@ static bool mlx5_lag_is_bonded(struct mlx5_lag *ldev)
 static void mlx5_infer_tx_affinity_mapping(struct lag_tracker *tracker,
 					   u8 *port1, u8 *port2)
 {
-	if (tracker->tx_type == NETDEV_LAG_TX_TYPE_ACTIVEBACKUP) {
-		if (tracker->netdev_state[0].tx_enabled) {
 	*port1 = 1;
-			*port2 = 1;
-		} else {
-			*port1 = 2;
 	*port2 = 2;
-		}
-	} else {
-		*port1 = 1;
-		*port2 = 2;
-		if (!tracker->netdev_state[0].link_up)
+	if (!tracker->netdev_state[0].tx_enabled ||
+	    !tracker->netdev_state[0].link_up) {
 		*port1 = 2;
-		else if (!tracker->netdev_state[1].link_up)
-			*port2 = 1;
+		return;
 	}
+
+	if (!tracker->netdev_state[1].tx_enabled ||
+	    !tracker->netdev_state[1].link_up)
+		*port2 = 1;
 }
 
 static void mlx5_activate_lag(struct mlx5_lag *ldev,