net/mlx5: Use flow steering infrastructure for mlx5_en

Expose the new flow steering API and remove the old
one.

Few changes are required:

1. The Ethernet flow steering follows the existing implementation, but uses
the new steering API. The old flow steering implementation is removed.

2. Move the E-switch FDB management to use the new API.

3. When driver is loaded call to mlx5_init_fs which initialize
the flow steering tree structure, open namespaces for NIC receive
and for E-switch FDB.

4. Call to mlx5_cleanup_fs when the driver is unloaded.

Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Moni Shoua <monis@mellanox.com>
Signed-off-by: Matan Barak <matanb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/mellanox/mlx5/core/Makefile

@@ -3,6 +3,6 @@ obj-$(CONFIG_MLX5_CORE)		+= mlx5_core.o
 mlx5_core-y :=	main.o cmd.o debugfs.o fw.o eq.o uar.o pagealloc.o \
 		health.o mcg.o cq.o srq.o alloc.o qp.o port.o mr.o pd.o   \
 		mad.o transobj.o vport.o sriov.o fs_cmd.o fs_core.o
-mlx5_core-$(CONFIG_MLX5_CORE_EN) += wq.o flow_table.o eswitch.o \
+mlx5_core-$(CONFIG_MLX5_CORE_EN) += wq.o eswitch.o \
 		en_main.o en_flow_table.o en_ethtool.o en_tx.o en_rx.o \
 		en_txrx.o

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

@@ -64,6 +64,8 @@
 #define MLX5E_UPDATE_STATS_INTERVAL    200 /* msecs */
 #define MLX5E_SQ_BF_BUDGET             16
 
+#define MLX5E_NUM_MAIN_GROUPS 9
+
 static const char vport_strings[][ETH_GSTRING_LEN] = {
 	/* vport statistics */
 	"rx_packets",
@@ -442,7 +444,7 @@ enum mlx5e_rqt_ix {
 struct mlx5e_eth_addr_info {
 	u8  addr[ETH_ALEN + 2];
 	u32 tt_vec;
-	u32 ft_ix[MLX5E_NUM_TT]; /* flow table index per traffic type */
+	struct mlx5_flow_rule *ft_rule[MLX5E_NUM_TT];
 };
 
 #define MLX5E_ETH_ADDR_HASH_SIZE (1 << BITS_PER_BYTE)
@@ -466,15 +468,22 @@ enum {
 
 struct mlx5e_vlan_db {
 	unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
-	u32           active_vlans_ft_ix[VLAN_N_VID];
-	u32           untagged_rule_ft_ix;
-	u32           any_vlan_rule_ft_ix;
+	struct mlx5_flow_rule	*active_vlans_rule[VLAN_N_VID];
+	struct mlx5_flow_rule	*untagged_rule;
+	struct mlx5_flow_rule	*any_vlan_rule;
 	bool          filter_disabled;
 };
 
 struct mlx5e_flow_table {
-	void *vlan;
-	void *main;
+	int num_groups;
+	struct mlx5_flow_table		*t;
+	struct mlx5_flow_group		**g;
+};
+
+struct mlx5e_flow_tables {
+	struct mlx5_flow_namespace	*ns;
+	struct mlx5e_flow_table		vlan;
+	struct mlx5e_flow_table		main;
 };
 
 struct mlx5e_priv {
@@ -497,7 +506,7 @@ struct mlx5e_priv {
 	u32                        rqtn[MLX5E_NUM_RQT];
 	u32                        tirn[MLX5E_NUM_TT];
 
-	struct mlx5e_flow_table    ft;
+	struct mlx5e_flow_tables   fts;
 	struct mlx5e_eth_addr_db   eth_addr;
 	struct mlx5e_vlan_db       vlan;