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/*
* Ouroboros - Copyright (C) 2016 - 2024
*
* IPCP definitions and policies
*
* Dimitri Staessens <dimitri@ouroboros.rocks>
* Sander Vrijders <sander@ouroboros.rocks>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1 as published by the Free Software Foundation.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., http://www.fsf.org/about/contact/.
*/
#ifndef OUROBOROS_IPCP_H
#define OUROBOROS_IPCP_H
#include <stdint.h>
#include <unistd.h>
#include <stdbool.h>
#include <sys/types.h>
#define IPCP_NAME_SIZE 255
#define LAYER_NAME_SIZE 255
#define DEV_NAME_SIZE 255
enum ipcp_state {
IPCP_INIT = 0,
IPCP_BOOT,
IPCP_OPERATIONAL,
IPCP_BOOTSTRAPPED,
IPCP_ENROLLED,
IPCP_SHUTDOWN,
IPCP_NULL
};
enum ipcp_type { /* IRMd uses order to select an IPCP for flow allocation. */
IPCP_LOCAL = 0,
IPCP_UNICAST,
IPCP_BROADCAST,
IPCP_ETH_LLC,
IPCP_ETH_DIX,
IPCP_UDP,
IPCP_INVALID
};
struct ipcp_info {
enum ipcp_type type;
pid_t pid;
char name[IPCP_NAME_SIZE + 1];
enum ipcp_state state;
};
/* Unicast IPCP components. */
#define DT_COMP "Data Transfer"
#define MGMT_COMP "Management"
/* Unicast IPCP policies */
enum pol_addr_auth {
ADDR_AUTH_FLAT_RANDOM = 0,
ADDR_AUTH_INVALID
};
enum pol_routing {
ROUTING_LINK_STATE = 0,
ROUTING_LINK_STATE_LFA,
ROUTING_LINK_STATE_ECMP,
ROUTING_INVALID
};
enum pol_cong_avoid {
CA_NONE = 0,
CA_MB_ECN,
CA_INVALID
};
struct dt_config {
uint8_t addr_size;
uint8_t eid_size;
uint8_t max_ttl;
enum pol_routing routing_type;
};
/* IPCP configuration */
struct uni_config {
struct dt_config dt;
enum pol_addr_auth addr_auth_type;
enum pol_cong_avoid cong_avoid;
};
struct eth_config {
char dev[DEV_NAME_SIZE + 1];
uint16_t ethertype; /* DIX only*/
};
struct udp_config {
uint32_t ip_addr;
uint32_t dns_addr;
uint16_t port;
};
/* Layers */
enum pol_dir_hash {
DIR_HASH_SHA3_224,
DIR_HASH_SHA3_256,
DIR_HASH_SHA3_384,
DIR_HASH_SHA3_512,
DIR_HASH_INVALID
};
struct layer_info {
char name[LAYER_NAME_SIZE + 1];
enum pol_dir_hash dir_hash_algo;
};
/* Structure to configure the first IPCP */
struct ipcp_config {
struct layer_info layer_info;
enum ipcp_type type;
union {
struct uni_config unicast;
struct udp_config udp;
struct eth_config eth;
};
};
/* default configurations */
static const struct ipcp_config local_default_conf = {
.type = IPCP_LOCAL,
.layer_info = {
.dir_hash_algo = DIR_HASH_SHA3_256
}
};
static const struct ipcp_config eth_dix_default_conf = {
.type = IPCP_ETH_DIX,
.layer_info = {
.dir_hash_algo = DIR_HASH_SHA3_256
},
.eth = {
.ethertype=0xA000,
}
};
static const struct ipcp_config eth_llc_default_conf = {
.type = IPCP_ETH_LLC,
.layer_info = {
.dir_hash_algo = DIR_HASH_SHA3_256
}
};
static const struct ipcp_config udp_default_conf = {
.type = IPCP_UDP,
.udp = {
.port = 3435
}
};
static const struct ipcp_config uni_default_conf = {
.type = IPCP_UNICAST,
.layer_info = {
.dir_hash_algo = DIR_HASH_SHA3_256
},
.unicast = {
.dt = {
.addr_size = 4,
.eid_size = 8,
.max_ttl = 60,
.routing_type = ROUTING_LINK_STATE
},
.addr_auth_type = ADDR_AUTH_FLAT_RANDOM,
.cong_avoid = CA_MB_ECN
}
};
static const struct ipcp_config bc_default_conf = {
.type = IPCP_BROADCAST
};
#endif /* OUROBOROS_IPCP_H */
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