/*
// Copyright (c) 2010-2017 Intel Corporation
//
// 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.
*/

#ifndef _PROX_LUA_TYPES_H_
#define _PROX_LUA_TYPES_H_

#include <inttypes.h>
#include <rte_ether.h>
#include <rte_hash.h>

#include "prox_compat.h"
#include "ip6_addr.h"

struct lua_State;
struct ip4_subnet;
struct ip6_subnet;
struct next_hop;
struct rte_lpm;
struct rte_lpm6;
struct next_hop6;
struct rte_acl_ctx;
struct qinq_gre_map;

#define MAX_HOP_INDEX  128
enum l4gen_peer {PEER_SERVER, PEER_CLIENT};

static const char *l4gen_peer_to_str(enum l4gen_peer peer)
{
	return peer == PEER_SERVER? "server" : "client";
}

struct peer_data {
	uint8_t *hdr;
	uint32_t hdr_len;
	uint8_t *content;
};

struct peer_action {
	enum l4gen_peer   peer;
	uint32_t          beg;
	uint32_t          len;
};

struct lpm4 {
	uint32_t n_free_rules;
	uint32_t n_used_rules;
	struct next_hop *next_hops;
	struct rte_lpm *rte_lpm;
};

struct lpm6 {
	struct rte_lpm6 *rte_lpm6;
	struct next_hop6 *next_hops;
	uint32_t n_free_rules;
	uint32_t n_used_rules;
};

struct ipv6_tun_binding_entry {
	struct ipv6_addr        endpoint_addr;  // IPv6 local addr
	prox_rte_ether_addr       next_hop_mac;   // mac addr of next hop towards lwB4
	uint32_t                public_ipv4;    // Public IPv4 address
	uint16_t                public_port;    // Public base port (together with port mask, defines the Port Set)
} __attribute__((__packed__)) __attribute__((__aligned__(2)));

struct ipv6_tun_binding_table {
	uint32_t                num_binding_entries;
	struct ipv6_tun_binding_entry entry[0];
};

struct cpe_table_entry {
	uint32_t port_idx;
	uint32_t gre_id;
	uint32_t svlan;
	uint32_t cvlan;
	uint32_t ip;
	prox_rte_ether_addr eth_addr;
	uint32_t user;
};

struct cpe_table_data {
	uint32_t               n_entries;
	struct cpe_table_entry entries[0];
};

struct val_mask {
	uint32_t val;
	uint32_t mask;
};

struct val_range {
	uint32_t beg;
	uint32_t end;
};

enum acl_action {ACL_NOT_SET, ACL_ALLOW, ACL_DROP, ACL_RATE_LIMIT};

const char *get_lua_to_errors(void);

enum lua_place {STACK, TABLE, GLOBAL};
int lua_getfrom(struct lua_State *L, enum lua_place from, const char *name);

int lua_to_port(struct lua_State *L, enum lua_place from, const char *name, uint16_t *port);
int lua_to_ip(struct lua_State *L, enum lua_place from, const char *name, uint32_t *ip);
int lua_to_ip6(struct lua_State *L, enum lua_place from, const char *name, uint8_t *ip);
int lua_to_mac(struct lua_State *L, enum lua_place from, const char *name, prox_rte_ether_addr *mac);
int lua_to_cidr(struct lua_State *L, enum lua_place from, const char *name, struct ip4_subnet *cidr);
int lua_to_cidr6(struct lua_State *L, enum lua_place from, const char *name, struct ip6_subnet *cidr);
int lua_to_int(struct lua_State *L, enum lua_place from, const char *name, uint32_t *val);
int lua_to_double(struct lua_State *L, enum lua_place from, const char *name, double *val);
int lua_to_string(struct lua_State *L, enum lua_place from, const char *name, char *dst, size_t size);
int lua_to_val_mask(struct lua_State *L, enum lua_place from, const char *name, struct val_mask *val_mask);
int lua_to_val_range(struct lua_State *L, enum lua_place from, const char *name, struct val_range *val_range);
int lua_to_action(struct lua_State *L, enum lua_place from, const char *name, enum acl_action *action);
int lua_to_dscp(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, uint8_t **dscp);
int lua_to_user_table(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, uint16_t **user_table);
int lua_to_lpm4(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct lpm4 **lpm);
int lua_to_routes4(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct lpm4 *lpm);
int lua_to_next_hop(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct next_hop **nh);
int lua_to_lpm6(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct lpm6 **lpm);
int lua_to_ip6_tun_binding(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct ipv6_tun_binding_table **data);
int lua_to_qinq_gre_map(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct qinq_gre_map **qinq_gre_map);
int lua_to_cpe_table_data(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct cpe_table_data **data);
int lua_to_rules(struct lua_State *L, enum lua_place from, const char *name, struct rte_acl_ctx *ctx, uint32_t* n_max_rules, int use_qinq, uint16_t qinq_tag);
int lua_to_routes4_entry(struct lua_State *L, enum lua_place from, const char *name, struct ip4_subnet *cidr, uint32_t *nh_idx);
int lua_to_next_hop6(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct next_hop6 **nh);
int lua_to_routes6(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct lpm6 *lpm);
int lua_to_tuples(struct lua_State *L, enum lua_place from, const char *name, uint8_t socket, struct rte_hash **lookup_hash, uint8_t **out_if);

#endif /* _PROX_LUA_TYPES_H_ */