net/mlx5: Introduce access functions to modify/query vport promisc mode

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

Those functions are needed to notify the upcoming SR-IOV
E-Switch(FDB) manager(PF), of the NIC vport (vf) promisc mode changes.

Preperation for ethernet sriov and l2 table management.
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 d82b7318)
Signed-off-by: Tim Gardner <tim.gardner@canonical.com>

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

@@ -576,3 +576,65 @@ int mlx5_query_hca_vport_node_guid(struct mlx5_core_dev *dev,
 	return err;
 }
 EXPORT_SYMBOL_GPL(mlx5_query_hca_vport_node_guid);
+
+int mlx5_query_nic_vport_promisc(struct mlx5_core_dev *mdev,
+				 u32 vport,
+				 int *promisc_uc,
+				 int *promisc_mc,
+				 int *promisc_all)
+{
+	u32 *out;
+	int outlen = MLX5_ST_SZ_BYTES(query_nic_vport_context_out);
+	int err;
+
+	out = kzalloc(outlen, GFP_KERNEL);
+	if (!out)
+		return -ENOMEM;
+
+	err = mlx5_query_nic_vport_context(mdev, vport, out, outlen);
+	if (err)
+		goto out;
+
+	*promisc_uc = MLX5_GET(query_nic_vport_context_out, out,
+			       nic_vport_context.promisc_uc);
+	*promisc_mc = MLX5_GET(query_nic_vport_context_out, out,
+			       nic_vport_context.promisc_mc);
+	*promisc_all = MLX5_GET(query_nic_vport_context_out, out,
+				nic_vport_context.promisc_all);
+
+out:
+	kfree(out);
+	return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_query_nic_vport_promisc);
+
+int mlx5_modify_nic_vport_promisc(struct mlx5_core_dev *mdev,
+				  int promisc_uc,
+				  int promisc_mc,
+				  int promisc_all)
+{
+	void *in;
+	int inlen = MLX5_ST_SZ_BYTES(modify_nic_vport_context_in);
+	int err;
+
+	in = mlx5_vzalloc(inlen);
+	if (!in) {
+		mlx5_core_err(mdev, "failed to allocate inbox\n");
+		return -ENOMEM;
+	}
+
+	MLX5_SET(modify_nic_vport_context_in, in, field_select.promisc, 1);
+	MLX5_SET(modify_nic_vport_context_in, in,
+		 nic_vport_context.promisc_uc, promisc_uc);
+	MLX5_SET(modify_nic_vport_context_in, in,
+		 nic_vport_context.promisc_mc, promisc_mc);
+	MLX5_SET(modify_nic_vport_context_in, in,
+		 nic_vport_context.promisc_all, promisc_all);
+
+	err = mlx5_modify_nic_vport_context(mdev, in, inlen);
+
+	kvfree(in);
+
+	return err;
+}
+EXPORT_SYMBOL_GPL(mlx5_modify_nic_vport_promisc);

include/linux/mlx5/mlx5_ifc.h

@@ -2147,16 +2147,31 @@ struct mlx5_ifc_nic_vport_context_bits {
 	u8         reserved_0[0x1f];
 	u8         roce_en[0x1];
 
-	u8         reserved_1[0x760];
+	u8         arm_change_event[0x1];
+	u8         reserved_1[0x1a];
+	u8         event_on_mtu[0x1];
+	u8         event_on_promisc_change[0x1];
+	u8         event_on_vlan_change[0x1];
+	u8         event_on_mc_address_change[0x1];
+	u8         event_on_uc_address_change[0x1];
 
-	u8         reserved_2[0x5];
+	u8         reserved_2[0xf0];
+
+	u8         mtu[0x10];
+
+	u8         reserved_3[0x640];
+
+	u8         promisc_uc[0x1];
+	u8         promisc_mc[0x1];
+	u8         promisc_all[0x1];
+	u8         reserved_4[0x2];
 	u8         allowed_list_type[0x3];
-	u8         reserved_3[0xc];
+	u8         reserved_5[0xc];
 	u8         allowed_list_size[0xc];
 
 	struct mlx5_ifc_mac_address_layout_bits permanent_address;
 
-	u8         reserved_4[0x20];
+	u8         reserved_6[0x20];
 
 	u8         current_uc_mac_address[0][0x40];
 };
@@ -4235,7 +4250,10 @@ struct mlx5_ifc_modify_nic_vport_context_out_bits {
 };
 
 struct mlx5_ifc_modify_nic_vport_field_select_bits {
-	u8         reserved_0[0x1c];
+	u8         reserved_0[0x19];
+	u8         mtu[0x1];
+	u8         change_event[0x1];
+	u8         promisc[0x1];
 	u8         permanent_address[0x1];
 	u8         addresses_list[0x1];
 	u8         roce_en[0x1];

include/linux/mlx5/vport.h

@@ -68,5 +68,14 @@ int mlx5_modify_nic_vport_mac_list(struct mlx5_core_dev *dev,
 				   enum mlx5_list_type list_type,
 				   u8 addr_list[][ETH_ALEN],
 				   int list_size);
+int mlx5_query_nic_vport_promisc(struct mlx5_core_dev *mdev,
+				 u32 vport,
+				 int *promisc_uc,
+				 int *promisc_mc,
+				 int *promisc_all);
+int mlx5_modify_nic_vport_promisc(struct mlx5_core_dev *mdev,
+				  int promisc_uc,
+				  int promisc_mc,
+				  int promisc_all);
 
 #endif /* __MLX5_VPORT_H__ */