mlxsw: spectrum: qdiscs: Move qdisc's declarations to its designated file

Move all the qdisc related data from the spectrum.h to spectrum_qdisc.c.
Create an init and fini functions for the qdiscs.
Signed-off-by: Nogah Frankel <nogahf@mellanox.com>
Reviewed-by: Yuval Mintz <yuvalm@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlxsw/spectrum.c

@@ -3085,6 +3085,13 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 		goto err_port_fids_init;
 	}
 
+	err = mlxsw_sp_tc_qdisc_init(mlxsw_sp_port);
+	if (err) {
+		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to initialize TC qdiscs\n",
+			mlxsw_sp_port->local_port);
+		goto err_port_qdiscs_init;
+	}
+
 	mlxsw_sp_port_vlan = mlxsw_sp_port_vlan_get(mlxsw_sp_port, 1);
 	if (IS_ERR(mlxsw_sp_port_vlan)) {
 		dev_err(mlxsw_sp->bus_info->dev, "Port %d: Failed to create VID 1\n",
@@ -3113,6 +3120,8 @@ static int mlxsw_sp_port_create(struct mlxsw_sp *mlxsw_sp, u8 local_port,
 	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
 	mlxsw_sp_port_vlan_put(mlxsw_sp_port_vlan);
 err_port_vlan_get:
+	mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port);
+err_port_qdiscs_init:
 	mlxsw_sp_port_fids_fini(mlxsw_sp_port);
 err_port_fids_init:
 	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
@@ -3148,6 +3157,7 @@ static void mlxsw_sp_port_remove(struct mlxsw_sp *mlxsw_sp, u8 local_port)
 	mlxsw_sp->ports[local_port] = NULL;
 	mlxsw_sp_port_switchdev_fini(mlxsw_sp_port);
 	mlxsw_sp_port_vlan_flush(mlxsw_sp_port);
+	mlxsw_sp_tc_qdisc_fini(mlxsw_sp_port);
 	mlxsw_sp_port_fids_fini(mlxsw_sp_port);
 	mlxsw_sp_port_dcb_fini(mlxsw_sp_port);
 	mlxsw_sp_port_swid_set(mlxsw_sp_port, MLXSW_PORT_SWID_DISABLED_PORT);

drivers/net/ethernet/mellanox/mlxsw/spectrum.h

@@ -204,29 +204,6 @@ struct mlxsw_sp_port_vlan {
 	struct list_head bridge_vlan_node;
 };
 
-enum mlxsw_sp_qdisc_type {
-	MLXSW_SP_QDISC_NO_QDISC,
-	MLXSW_SP_QDISC_RED,
-};
-
-struct mlxsw_sp_qdisc {
-	u32 handle;
-	enum mlxsw_sp_qdisc_type type;
-	struct red_stats xstats_base;
-	union {
-		struct {
-			u64 tail_drop_base;
-			u64 ecn_base;
-			u64 wred_drop_base;
-		} red;
-	} xstats;
-
-	u64 tx_bytes;
-	u64 tx_packets;
-	u64 drops;
-	u64 overlimits;
-};
-
 /* No need an internal lock; At worse - miss a single periodic iteration */
 struct mlxsw_sp_port_xstats {
 	u64 ecn;
@@ -269,7 +246,7 @@ struct mlxsw_sp_port {
 	} periodic_hw_stats;
 	struct mlxsw_sp_port_sample *sample;
 	struct list_head vlans_list;
-	struct mlxsw_sp_qdisc root_qdisc;
+	struct mlxsw_sp_qdisc *root_qdisc;
 	unsigned acl_rule_count;
 };
 
@@ -584,6 +561,8 @@ int mlxsw_sp_flower_stats(struct mlxsw_sp_port *mlxsw_sp_port, bool ingress,
 			  struct tc_cls_flower_offload *f);
 
 /* spectrum_qdisc.c */
+int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port);
+void mlxsw_sp_tc_qdisc_fini(struct mlxsw_sp_port *mlxsw_sp_port);
 int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
 			  struct tc_red_qopt_offload *p);
 

drivers/net/ethernet/mellanox/mlxsw/spectrum_qdisc.c

@@ -41,6 +41,28 @@
 #include "spectrum.h"
 #include "reg.h"
 
+enum mlxsw_sp_qdisc_type {
+	MLXSW_SP_QDISC_NO_QDISC,
+	MLXSW_SP_QDISC_RED,
+};
+
+struct mlxsw_sp_qdisc {
+	u32 handle;
+	enum mlxsw_sp_qdisc_type type;
+	struct red_stats xstats_base;
+	union {
+		struct {
+			u64 tail_drop_base;
+			u64 ecn_base;
+			u64 wred_drop_base;
+		} red;
+	} xstats;
+	u64 tx_bytes;
+	u64 tx_packets;
+	u64 drops;
+	u64 overlimits;
+};
+
 static int
 mlxsw_sp_tclass_congestion_enable(struct mlxsw_sp_port *mlxsw_sp_port,
 				  int tclass_num, u32 min, u32 max,
@@ -251,7 +273,7 @@ int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
 	if (p->parent != TC_H_ROOT)
 		return -EOPNOTSUPP;
 
-	mlxsw_sp_qdisc = &mlxsw_sp_port->root_qdisc;
+	mlxsw_sp_qdisc = mlxsw_sp_port->root_qdisc;
 	tclass_num = MLXSW_SP_PORT_DEFAULT_TCLASS;
 
 	switch (p->command) {
@@ -274,3 +296,18 @@ int mlxsw_sp_setup_tc_red(struct mlxsw_sp_port *mlxsw_sp_port,
 		return -EOPNOTSUPP;
 	}
 }
+
+int mlxsw_sp_tc_qdisc_init(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+	mlxsw_sp_port->root_qdisc = kzalloc(sizeof(*mlxsw_sp_port->root_qdisc),
+					    GFP_KERNEL);
+	if (!mlxsw_sp_port->root_qdisc)
+		return -ENOMEM;
+
+	return 0;
+}
+
+void mlxsw_sp_tc_qdisc_fini(struct mlxsw_sp_port *mlxsw_sp_port)
+{
+	kfree(mlxsw_sp_port->root_qdisc);
+}