net/mlx5e: Move Q counters allocation and drop RQ to init_rx

Not all profiles query the HW Q counters in update_stats() callback.
HW Q couners are limited per device and in case of representors all
their Q counters are allocated on the parent PF device.
Avoid reundant allocation of HW Q counters by moving the allocation
to init_rx profile callback.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

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

@@ -898,6 +898,12 @@ void mlx5e_destroy_mdev_resources(struct mlx5_core_dev *mdev);
 int mlx5e_refresh_tirs(struct mlx5e_priv *priv, bool enable_uc_lb);
 
 /* common netdev helpers */
+void mlx5e_create_q_counters(struct mlx5e_priv *priv);
+void mlx5e_destroy_q_counters(struct mlx5e_priv *priv);
+int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
+		       struct mlx5e_rq *drop_rq);
+void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq);
+
 int mlx5e_create_indirect_rqt(struct mlx5e_priv *priv);
 
 int mlx5e_create_indirect_tirs(struct mlx5e_priv *priv);

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

@@ -3049,8 +3049,8 @@ static int mlx5e_alloc_drop_cq(struct mlx5_core_dev *mdev,
 	return mlx5e_alloc_cq_common(mdev, param, cq);
 }
 
-static int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
-			      struct mlx5e_rq *drop_rq)
+int mlx5e_open_drop_rq(struct mlx5e_priv *priv,
+		       struct mlx5e_rq *drop_rq)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	struct mlx5e_cq_param cq_param = {};
@@ -3094,7 +3094,7 @@ err_free_cq:
 	return err;
 }
 
-static void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq)
+void mlx5e_close_drop_rq(struct mlx5e_rq *drop_rq)
 {
 	mlx5e_destroy_rq(drop_rq);
 	mlx5e_free_rq(drop_rq);
@@ -4726,7 +4726,7 @@ static void mlx5e_build_nic_netdev(struct net_device *netdev)
 	mlx5e_tls_build_netdev(priv);
 }
 
-static void mlx5e_create_q_counters(struct mlx5e_priv *priv)
+void mlx5e_create_q_counters(struct mlx5e_priv *priv)
 {
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int err;
@@ -4744,7 +4744,7 @@ static void mlx5e_create_q_counters(struct mlx5e_priv *priv)
 	}
 }
 
-static void mlx5e_destroy_q_counters(struct mlx5e_priv *priv)
+void mlx5e_destroy_q_counters(struct mlx5e_priv *priv)
 {
 	if (priv->q_counter)
 		mlx5_core_dealloc_q_counter(priv->mdev, priv->q_counter);
@@ -4783,9 +4783,17 @@ static int mlx5e_init_nic_rx(struct mlx5e_priv *priv)
 	struct mlx5_core_dev *mdev = priv->mdev;
 	int err;
 
+	mlx5e_create_q_counters(priv);
+
+	err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
+	if (err) {
+		mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
+		goto err_destroy_q_counters;
+	}
+
 	err = mlx5e_create_indirect_rqt(priv);
 	if (err)
-		return err;
+		goto err_close_drop_rq;
 
 	err = mlx5e_create_direct_rqts(priv);
 	if (err)
@@ -4821,6 +4829,10 @@ err_destroy_direct_rqts:
 	mlx5e_destroy_direct_rqts(priv);
 err_destroy_indirect_rqts:
 	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
+err_close_drop_rq:
+	mlx5e_close_drop_rq(&priv->drop_rq);
+err_destroy_q_counters:
+	mlx5e_destroy_q_counters(priv);
 	return err;
 }
 
@@ -4832,6 +4844,8 @@ static void mlx5e_cleanup_nic_rx(struct mlx5e_priv *priv)
 	mlx5e_destroy_indirect_tirs(priv);
 	mlx5e_destroy_direct_rqts(priv);
 	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
+	mlx5e_close_drop_rq(&priv->drop_rq);
+	mlx5e_destroy_q_counters(priv);
 }
 
 static int mlx5e_init_nic_tx(struct mlx5e_priv *priv)
@@ -4975,7 +4989,6 @@ err_cleanup_nic:
 
 int mlx5e_attach_netdev(struct mlx5e_priv *priv)
 {
-	struct mlx5_core_dev *mdev = priv->mdev;
 	const struct mlx5e_profile *profile;
 	int err;
 
@@ -4986,28 +4999,16 @@ int mlx5e_attach_netdev(struct mlx5e_priv *priv)
 	if (err)
 		goto out;
 
-	mlx5e_create_q_counters(priv);
-
-	err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
-	if (err) {
-		mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
-		goto err_destroy_q_counters;
-	}
-
 	err = profile->init_rx(priv);
 	if (err)
-		goto err_close_drop_rq;
+		goto err_cleanup_tx;
 
 	if (profile->enable)
 		profile->enable(priv);
 
 	return 0;
 
-err_close_drop_rq:
-	mlx5e_close_drop_rq(&priv->drop_rq);
-
-err_destroy_q_counters:
-	mlx5e_destroy_q_counters(priv);
+err_cleanup_tx:
 	profile->cleanup_tx(priv);
 
 out:
@@ -5025,8 +5026,6 @@ void mlx5e_detach_netdev(struct mlx5e_priv *priv)
 	flush_workqueue(priv->wq);
 
 	profile->cleanup_rx(priv);
-	mlx5e_close_drop_rq(&priv->drop_rq);
-	mlx5e_destroy_q_counters(priv);
 	profile->cleanup_tx(priv);
 	cancel_delayed_work_sync(&priv->update_stats_work);
 }

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

@@ -999,14 +999,21 @@ static int mlx5e_init_rep_rx(struct mlx5e_priv *priv)
 	struct mlx5_eswitch *esw = priv->mdev->priv.eswitch;
 	struct mlx5e_rep_priv *rpriv = priv->ppriv;
 	struct mlx5_eswitch_rep *rep = rpriv->rep;
+	struct mlx5_core_dev *mdev = priv->mdev;
 	struct mlx5_flow_handle *flow_rule;
 	int err;
 
 	mlx5e_init_l2_addr(priv);
 
+	err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
+	if (err) {
+		mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
+		return err;
+	}
+
 	err = mlx5e_create_direct_rqts(priv);
 	if (err)
-		return err;
+		goto err_close_drop_rq;
 
 	err = mlx5e_create_direct_tirs(priv);
 	if (err)
@@ -1027,6 +1034,8 @@ err_destroy_direct_tirs:
 	mlx5e_destroy_direct_tirs(priv);
 err_destroy_direct_rqts:
 	mlx5e_destroy_direct_rqts(priv);
+err_close_drop_rq:
+	mlx5e_close_drop_rq(&priv->drop_rq);
 	return err;
 }
 
@@ -1037,6 +1046,7 @@ static void mlx5e_cleanup_rep_rx(struct mlx5e_priv *priv)
 	mlx5_del_flow_rules(rpriv->vport_rx_rule);
 	mlx5e_destroy_direct_tirs(priv);
 	mlx5e_destroy_direct_rqts(priv);
+	mlx5e_close_drop_rq(&priv->drop_rq);
 }
 
 static int mlx5e_init_rep_tx(struct mlx5e_priv *priv)

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

@@ -349,11 +349,20 @@ static void mlx5i_destroy_flow_steering(struct mlx5e_priv *priv)
 
 static int mlx5i_init_rx(struct mlx5e_priv *priv)
 {
+	struct mlx5_core_dev *mdev = priv->mdev;
 	int err;
 
+	mlx5e_create_q_counters(priv);
+
+	err = mlx5e_open_drop_rq(priv, &priv->drop_rq);
+	if (err) {
+		mlx5_core_err(mdev, "open drop rq failed, %d\n", err);
+		goto err_destroy_q_counters;
+	}
+
 	err = mlx5e_create_indirect_rqt(priv);
 	if (err)
-		return err;
+		goto err_close_drop_rq;
 
 	err = mlx5e_create_direct_rqts(priv);
 	if (err)
@@ -381,6 +390,10 @@ err_destroy_direct_rqts:
 	mlx5e_destroy_direct_rqts(priv);
 err_destroy_indirect_rqts:
 	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
+err_close_drop_rq:
+	mlx5e_close_drop_rq(&priv->drop_rq);
+err_destroy_q_counters:
+	mlx5e_destroy_q_counters(priv);
 	return err;
 }
 
@@ -391,6 +404,8 @@ static void mlx5i_cleanup_rx(struct mlx5e_priv *priv)
 	mlx5e_destroy_indirect_tirs(priv);
 	mlx5e_destroy_direct_rqts(priv);
 	mlx5e_destroy_rqt(priv, &priv->indir_rqt);
+	mlx5e_close_drop_rq(&priv->drop_rq);
+	mlx5e_destroy_q_counters(priv);
 }
 
 static const struct mlx5e_profile mlx5i_nic_profile = {