net/mlx5e: Fix VF representors reporting zero counters to "ip -s" command

Although vf_vport entry of struct mlx5e_stats is never updated, its
values are mistakenly copied to the caller structure in the VF
representor .ndo_get_stat_64 callback mlx5e_rep_get_stats(). Remove
redundant entry and use the updated one, rep_stats, instead.

Fixes: 64b68e3 ("net/mlx5: Refactor and expand rep vport stat group")
Reviewed-by: Patrisious Haddad <phaddad@nvidia.com>
Signed-off-by: Amir Tzin <amirtz@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>

Author: Amir Tzin

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

@@ -701,7 +701,7 @@ mlx5e_rep_get_stats(struct net_device *dev, struct rtnl_link_stats64 *stats)
 
 	/* update HW stats in background for next time */
 	mlx5e_queue_update_stats(priv);
-	memcpy(stats, &priv->stats.vf_vport, sizeof(*stats));
+	mlx5e_stats_copy_rep_stats(stats, &priv->stats.rep_stats);
 }
 
 static int mlx5e_rep_change_mtu(struct net_device *netdev, int new_mtu)

drivers/net/ethernet/mellanox/mlx5/core/en_stats.h

@@ -484,11 +484,20 @@ struct mlx5e_stats {
 	struct mlx5e_vnic_env_stats vnic;
 	struct mlx5e_vport_stats vport;
 	struct mlx5e_pport_stats pport;
-	struct rtnl_link_stats64 vf_vport;
 	struct mlx5e_pcie_stats pcie;
 	struct mlx5e_rep_stats rep_stats;
 };
 
+static inline void mlx5e_stats_copy_rep_stats(struct rtnl_link_stats64 *vf_vport,
+					      struct mlx5e_rep_stats *rep_stats)
+{
+	memset(vf_vport, 0, sizeof(*vf_vport));
+	vf_vport->rx_packets = rep_stats->vport_rx_packets;
+	vf_vport->tx_packets = rep_stats->vport_tx_packets;
+	vf_vport->rx_bytes = rep_stats->vport_rx_bytes;
+	vf_vport->tx_bytes = rep_stats->vport_tx_bytes;
+}
+
 extern mlx5e_stats_grp_t mlx5e_nic_stats_grps[];
 unsigned int mlx5e_nic_stats_grps_num(struct mlx5e_priv *priv);
 

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

@@ -4972,7 +4972,8 @@ static int scan_tc_matchall_fdb_actions(struct mlx5e_priv *priv,
 			if (err)
 				return err;
 
-			rpriv->prev_vf_vport_stats = priv->stats.vf_vport;
+			mlx5e_stats_copy_rep_stats(&rpriv->prev_vf_vport_stats,
+						   &priv->stats.rep_stats);
 			break;
 		default:
 			NL_SET_ERR_MSG_MOD(extack, "mlx5 supports only police action for matchall");
@@ -5012,7 +5013,7 @@ void mlx5e_tc_stats_matchall(struct mlx5e_priv *priv,
 	u64 dbytes;
 	u64 dpkts;
 
-	cur_stats = priv->stats.vf_vport;
+	mlx5e_stats_copy_rep_stats(&cur_stats, &priv->stats.rep_stats);
 	dpkts = cur_stats.rx_packets - rpriv->prev_vf_vport_stats.rx_packets;
 	dbytes = cur_stats.rx_bytes - rpriv->prev_vf_vport_stats.rx_bytes;
 	rpriv->prev_vf_vport_stats = cur_stats;