/* Hey Emacs use -*- mode: C -*- */
/*
 * Copyright (c) 2020 Intel and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

option version = "0.0.3";
import "vnet/ethernet/ethernet_types.api";
import "vnet/ip/ip_types.api";

enum flow_type
{
  FLOW_TYPE_ETHERNET = 1,
  FLOW_TYPE_IP4,
  FLOW_TYPE_IP6,
  FLOW_TYPE_IP4_L2TPV3OIP,
  FLOW_TYPE_IP4_IPSEC_ESP,
  FLOW_TYPE_IP4_IPSEC_AH,
  FLOW_TYPE_IP4_N_TUPLE,
  FLOW_TYPE_IP6_N_TUPLE,
  FLOW_TYPE_IP4_N_TUPLE_TAGGED,
  FLOW_TYPE_IP6_N_TUPLE_TAGGED,
  FLOW_TYPE_IP4_VXLAN,
  FLOW_TYPE_IP6_VXLAN,
  FLOW_TYPE_IP4_GTPC,
  FLOW_TYPE_IP4_GTPU,
};

enum flow_action
{
  FLOW_ACTION_COUNT = 1,
  FLOW_ACTION_MARK = 2,
  FLOW_ACTION_BUFFER_ADVANCE = 4,
  FLOW_ACTION_REDIRECT_TO_NODE = 8,
  FLOW_ACTION_REDIRECT_TO_QUEUE = 16,
  FLOW_ACTION_DROP = 64,
};

typedef ip_port_and_mask
{
  u16 port;
  u16 mask;
};

typedef ip_prot_and_mask
{
  vl_api_ip_proto_t prot;
  u8 mask;
};

typedef flow_ethernet
{
  i32 foo;
  vl_api_mac_address_t src_addr;
  vl_api_mac_address_t dst_addr;
  u16 type;
};

typedef flow_ip4
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
};

typedef flow_ip6
{
  i32 foo;
  vl_api_ip6_address_and_mask_t src_addr;
  vl_api_ip6_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
};

typedef flow_ip4_n_tuple
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
};

typedef flow_ip6_n_tuple
{
  i32 foo;
  vl_api_ip6_address_and_mask_t src_addr;
  vl_api_ip6_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
};

typedef flow_ip4_n_tuple_tagged
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
};

typedef flow_ip6_n_tuple_tagged
{
  i32 foo;
  vl_api_ip6_address_and_mask_t src_addr;
  vl_api_ip6_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
};

typedef flow_ip4_l2tpv3oip
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  u32 session_id;
};

typedef flow_ip4_ipsec_esp
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  u32 spi;
};

typedef flow_ip4_ipsec_ah
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  u32 spi;
};

typedef flow_ip4_vxlan
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
  u32 vni;
};

typedef flow_ip6_vxlan
{
  i32 foo;
  vl_api_ip6_address_and_mask_t src_addr;
  vl_api_ip6_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
  u32 vni;
};

typedef flow_ip4_gtpc
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
  u32 teid;
};

typedef flow_ip4_gtpu
{
  i32 foo;
  vl_api_ip4_address_and_mask_t src_addr;
  vl_api_ip4_address_and_mask_t dst_addr;
  vl_api_ip_prot_and_mask_t protocol;
  vl_api_ip_port_and_mask_t src_port;
  vl_api_ip_port_and_mask_t dst_port;
  u32 teid;
};

union flow
{
  vl_api_flow_ethernet_t ethernet;
  vl_api_flow_ip4_t ip4;
  vl_api_flow_ip6_t ip6;
  vl_api_flow_ip4_l2tpv3oip_t ip4_l2tpv3oip;
  vl_api_flow_ip4_ipsec_esp_t ip4_ipsec_esp;
  vl_api_flow_ip4_ipsec_ah_t ip4_ipsec_ah;
  vl_api_flow_ip4_n_tuple_t ip4_n_tuple;
  vl_api_flow_ip6_n_tuple_t ip6_n_tuple;
  vl_api_flow_ip4_n_tuple_tagged_t ip4_n_tuple_tagged;
  vl_api_flow_ip6_n_tuple_tagged_t ip6_n_tuple_tagged;
  vl_api_flow_ip4_vxlan_t ip4_vxlan;
  vl_api_flow_ip6_vxlan_t ip6_vxlan;
  vl_api_flow_ip4_gtpc_t ip4_gtpc;
  vl_api_flow_ip4_gtpu_t ip4_gtpu;
};

/* main flow struct */
typedef flow_rule
{
  /* flow type */
  vl_api_flow_type_t type;
  
  /* flow index */
  u32 index;
  
  /* bitmap of flow actions (FLOW_ACTION_*) */
  vl_api_flow_action_t actions;

  /* flow id for VNET_FLOW_ACTION_MARK */
  u32 mark_flow_id;

  /* node index and next index for FLOW_ACTION_REDIRECT_TO_NODE */
  u32 redirect_node_index;
  u32 redirect_device_input_next_index;

  /* queue for FLOW_ACTION_REDIRECT_TO_QUEUE */
  u32 redirect_queue;

  /* buffer offset for FLOW_ACTION_BUFFER_ADVANCE */
  i32 buffer_advance;
  
  /* flow enum */
  vl_api_flow_t flow;
};