net/mlx5: E-Switch, Introduce HCA cap and E-Switch vport context

BugLink: http://bugs.launchpad.net/bugs/1540435

E-Switch vport context is unlike NIC vport context, managed by the
E-Switch manager or vport_group_manager and not by the NIC(VF) driver.

The E-Switch manager can access (read/modify) any of its vports
E-Switch context.

Currently E-Switch vport context includes only clietnt and server
vlan insertion and striping data (for later support of VST mode).
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
(cherry picked from commit d6666753)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

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

@@ -173,6 +173,17 @@ int mlx5_query_hca_caps(struct mlx5_core_dev *dev)
 			return err;
 	}
 
+	if (MLX5_CAP_GEN(dev, vport_group_manager)) {
+		err = mlx5_core_get_caps(dev, MLX5_CAP_ESWITCH,
+					 HCA_CAP_OPMOD_GET_CUR);
+		if (err)
+			return err;
+		err = mlx5_core_get_caps(dev, MLX5_CAP_ESWITCH,
+					 HCA_CAP_OPMOD_GET_MAX);
+		if (err)
+			return err;
+	}
+
 	return 0;
 }
 

include/linux/mlx5/device.h

@@ -1145,6 +1145,7 @@ enum mlx5_cap_type {
 	MLX5_CAP_EOIB_OFFLOADS,
 	MLX5_CAP_FLOW_TABLE,
 	MLX5_CAP_ESWITCH_FLOW_TABLE,
+	MLX5_CAP_ESWITCH,
 	/* NUM OF CAP Types */
 	MLX5_CAP_NUM
 };
@@ -1196,6 +1197,14 @@ enum mlx5_cap_type {
 #define MLX5_CAP_ESW_FLOWTABLE_FDB_MAX(mdev, cap) \
 	MLX5_CAP_ESW_FLOWTABLE_MAX(mdev, flow_table_properties_nic_esw_fdb.cap)
 
+#define MLX5_CAP_ESW(mdev, cap) \
+	MLX5_GET(e_switch_cap, \
+		 mdev->hca_caps_cur[MLX5_CAP_ESWITCH], cap)
+
+#define MLX5_CAP_ESW_MAX(mdev, cap) \
+	MLX5_GET(e_switch_cap, \
+		 mdev->hca_caps_max[MLX5_CAP_ESWITCH], cap)
+
 #define MLX5_CAP_ODP(mdev, cap)\
 	MLX5_GET(odp_cap, mdev->hca_caps_cur[MLX5_CAP_ODP], cap)
 

include/linux/mlx5/mlx5_ifc.h

@@ -459,6 +459,17 @@ struct mlx5_ifc_flow_table_eswitch_cap_bits {
 	u8      reserved_1[0x7800];
 };
 
+struct mlx5_ifc_e_switch_cap_bits {
+	u8         vport_svlan_strip[0x1];
+	u8         vport_cvlan_strip[0x1];
+	u8         vport_svlan_insert[0x1];
+	u8         vport_cvlan_insert_if_not_exist[0x1];
+	u8         vport_cvlan_insert_overwrite[0x1];
+	u8         reserved_0[0x1b];
+
+	u8         reserved_1[0x7e0];
+};
+
 struct mlx5_ifc_per_protocol_networking_offload_caps_bits {
 	u8         csum_cap[0x1];
 	u8         vlan_cap[0x1];
@@ -1860,6 +1871,7 @@ union mlx5_ifc_hca_cap_union_bits {
 	struct mlx5_ifc_per_protocol_networking_offload_caps_bits per_protocol_networking_offload_caps;
 	struct mlx5_ifc_flow_table_nic_cap_bits flow_table_nic_cap;
 	struct mlx5_ifc_flow_table_eswitch_cap_bits flow_table_eswitch_cap;
+	struct mlx5_ifc_e_switch_cap_bits e_switch_cap;
 	u8         reserved_0[0x8000];
 };
 
@@ -2305,6 +2317,26 @@ struct mlx5_ifc_hca_vport_context_bits {
 	u8         reserved_6[0xca0];
 };
 
+struct mlx5_ifc_esw_vport_context_bits {
+	u8         reserved_0[0x3];
+	u8         vport_svlan_strip[0x1];
+	u8         vport_cvlan_strip[0x1];
+	u8         vport_svlan_insert[0x1];
+	u8         vport_cvlan_insert[0x2];
+	u8         reserved_1[0x18];
+
+	u8         reserved_2[0x20];
+
+	u8         svlan_cfi[0x1];
+	u8         svlan_pcp[0x3];
+	u8         svlan_id[0xc];
+	u8         cvlan_cfi[0x1];
+	u8         cvlan_pcp[0x3];
+	u8         cvlan_id[0xc];
+
+	u8         reserved_3[0x7a0];
+};
+
 enum {
 	MLX5_EQC_STATUS_OK                = 0x0,
 	MLX5_EQC_STATUS_EQ_WRITE_FAILURE  = 0xa,
@@ -3743,6 +3775,64 @@ struct mlx5_ifc_query_flow_group_in_bits {
 	u8         reserved_5[0x120];
 };
 
+struct mlx5_ifc_query_esw_vport_context_out_bits {
+	u8         status[0x8];
+	u8         reserved_0[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_1[0x40];
+
+	struct mlx5_ifc_esw_vport_context_bits esw_vport_context;
+};
+
+struct mlx5_ifc_query_esw_vport_context_in_bits {
+	u8         opcode[0x10];
+	u8         reserved_0[0x10];
+
+	u8         reserved_1[0x10];
+	u8         op_mod[0x10];
+
+	u8         other_vport[0x1];
+	u8         reserved_2[0xf];
+	u8         vport_number[0x10];
+
+	u8         reserved_3[0x20];
+};
+
+struct mlx5_ifc_modify_esw_vport_context_out_bits {
+	u8         status[0x8];
+	u8         reserved_0[0x18];
+
+	u8         syndrome[0x20];
+
+	u8         reserved_1[0x40];
+};
+
+struct mlx5_ifc_esw_vport_context_fields_select_bits {
+	u8         reserved[0x1c];
+	u8         vport_cvlan_insert[0x1];
+	u8         vport_svlan_insert[0x1];
+	u8         vport_cvlan_strip[0x1];
+	u8         vport_svlan_strip[0x1];
+};
+
+struct mlx5_ifc_modify_esw_vport_context_in_bits {
+	u8         opcode[0x10];
+	u8         reserved_0[0x10];
+
+	u8         reserved_1[0x10];
+	u8         op_mod[0x10];
+
+	u8         other_vport[0x1];
+	u8         reserved_2[0xf];
+	u8         vport_number[0x10];
+
+	struct mlx5_ifc_esw_vport_context_fields_select_bits field_select;
+
+	struct mlx5_ifc_esw_vport_context_bits esw_vport_context;
+};
+
 struct mlx5_ifc_query_eq_out_bits {
 	u8         status[0x8];
 	u8         reserved_0[0x18];