/*
 * DHCP definitions
 * Copyright (c) 2014-2017, Qualcomm Atheros, Inc.
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#ifndef DHCP_H
#define DHCP_H

#include <netinet/ip.h>
#if __FAVOR_BSD
#include <netinet/udp.h>
#else
#define __FAVOR_BSD 1
#include <netinet/udp.h>
#undef __FAVOR_BSD
#endif

#define DHCP_SERVER_PORT 67
#define DHCP_CLIENT_PORT 68

struct dhcp_data {
	u8 op;
	u8 htype;
	u8 hlen;
	u8 hops;
	be32 xid;
	be16 secs;
	be16 flags;
	be32 client_ip;
	be32 your_ip;
	be32 server_ip;
	be32 relay_ip;
	u8 hw_addr[16];
	u8 serv_name[64];
	u8 boot_file[128];
} STRUCT_PACKED;

struct bootp_pkt {
	struct iphdr iph;
	struct udphdr udph;
	u8 op;
	u8 htype;
	u8 hlen;
	u8 hops;
	be32 xid;
	be16 secs;
	be16 flags;
	be32 client_ip;
	be32 your_ip;
	be32 server_ip;
	be32 relay_ip;
	u8 hw_addr[16];
	u8 serv_name[64];
	u8 boot_file[128];
	u8 exten[312];
} STRUCT_PACKED;

#define DHCP_MAGIC 0x63825363

/*
 * IANA DHCP/BOOTP registry
 * http://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameters.xhtml
*/
enum dhcp_options {
	DHCP_OPT_PAD = 0,
	DHCP_OPT_SUBNET_MASK = 1,
	DHCP_OPT_TIME_OFFSET = 2,
	DHCP_OPT_ROUTER = 3,
	DHCP_OPT_TIME_SERVER = 4,
	DHCP_OPT_NAME_SERVER = 5,
	DHCP_OPT_DOMAIN_NAME_SERVER = 6,
	DHCP_OPT_LOG_SERVER = 7,
	DHCP_OPT_QUOTES_SERVER = 8,
	DHCP_OPT_LPR_SERVER = 9,
	DHCP_OPT_IMPRESS_SERVER = 10,
	DHCP_OPT_RLP_SERVER = 11,
	DHCP_OPT_HOSTNAME = 12,
	DHCP_OPT_BOOT_FILE_SIZE = 13,
	DHCP_OPT_MERIT_DUMP_FILE = 14,
	DHCP_OPT_DOMAIN_NAME = 15,
	DHCP_OPT_SWAP_SERVER = 16,
	DHCP_OPT_ROOT_PATH = 17,
	DHCP_OPT_EXTENSION_PATH = 18,
	DHCP_OPT_FORWARD = 19,
	DHCP_OPT_SRC_RTE = 20,
	DHCP_OPT_POLICY_FILTER = 21,
	DHCP_OPT_MAX_DG_ASSEMBLY = 22,
	DHCP_OPT_DEFAULT_IP_TTL = 23,
	DHCP_OPT_MTU_TIMEOUT = 24,
	DHCP_OPT_MTU_PLATEAU = 25,
	DHCP_OPT_MTU_INTERFACE = 26,
	DHCP_OPT_ALL_SUBNETS_LOCAL = 27,
	DHCP_OPT_BROADCAST_ADDRESS = 28,
	DHCP_OPT_MASK_DISCOVERY = 29,
	DHCP_OPT_MASK_SUPPLIER = 30,
	DHCP_OPT_ROUTER_DISCOVERY = 31,
	DHCP_OPT_ROUTER_SOLICITATION_ADDRESS = 32,
	DHCP_OPT_STATIC_ROUTE = 33,
	DHCP_OPT_TRAILERS = 34,
	DHCP_OPT_ARP_TIMEOUT = 35,
	DHCP_OPT_ETHERNET = 36,
	DHCP_OPT_TCP_DEFAULT_TTL = 37,
	DHCP_OPT_TCP_KEEPALIVE_INTERVAL = 38,
	DHCP_OPT_TCP_KEEPALIVE_GARBAGE = 39,
	DHCP_OPT_NIS_DOMAIN = 40,
	DHCP_OPT_NIS_SERVERS = 41,
	DHCP_OPT_NTP_SERVERS = 42,
	DHCP_OPT_VENDOR_SPECIFIC = 43,
	DHCP_OPT_NETBIOS_NAME_SERVER = 44,
	DHCP_OPT_NETBIOS_DISTRIBUTION_SERVER = 45,
	DHCP_OPT_NETBIOS_NODE_TYPE = 46,
	DHCP_OPT_NETBIOS_SCOPE = 47,
	DHCP_OPT_FONT_SERVER = 48,
	DHCP_OPT_DISPLAY_MANAGER = 49,
	DHCP_OPT_REQUESTED_IP_ADDRESS = 50,
	DHCP_OPT_IP_ADDRESS_LEASE_TIME = 51,
	DHCP_OPT_OVERLOAD = 52,
	DHCP_OPT_MSG_TYPE = 53,
	DHCP_OPT_SERVER_ID = 54,
	DHCP_OPT_PARAMETER_REQ_LIST = 55,
	DHCP_OPT_MESSAGE = 56,
	DHCP_OPT_MAX_MESSAGE_SIZE = 57,
	DHCP_OPT_RENEWAL_TIME = 58,
	DHCP_OPT_REBINDING_TIME = 59,
	DHCP_OPT_VENDOR_CLASS_ID = 60,
	DHCP_OPT_CLIENT_ID = 61,
	DHCP_OPT_NETWARE_IP_DOMAIN = 62,
	DHCP_OPT_NETWARE_IP_OPTION = 63,
	DHCP_OPT_NIS_V3_DOMAIN = 64,
	DHCP_OPT_NIS_V3_SERVERS = 65,
	DHCP_OPT_TFTP_SERVER_NAME = 66,
	DHCP_OPT_BOOT_FILE_NAME = 67,
	DHCP_OPT_HOME_AGENT_ADDRESSES = 68,
	DHCP_OPT_SMTP_SERVER = 69,
	DHCP_OPT_POP3_SERVER = 70,
	DHCP_OPT_NNTP_SERVER = 71,
	DHCP_OPT_WWW_SERVER = 72,
	DHCP_OPT_FINGER_SERVER = 73,
	DHCP_OPT_IRC_SERVER = 74,
	DHCP_OPT_STREETTALK_SERVER = 75,
	DHCP_OPT_STDA_SERVER = 76,
	DHCP_OPT_USER_CLASS = 77,
	DHCP_OPT_DIRECTORY_AGENT = 78,
	DHCP_OPT_SERVICE_SCOPE = 79,
	DHCP_OPT_RAPID_COMMIT = 80,
	DHCP_OPT_CLIENT_FQDN = 81,
	DHCP_OPT_RELAY_AGENT_INFO = 82,
	DHCP_OPT_ISNS = 83,
	DHCP_OPT_NDS_SERVERS = 85,
	DHCP_OPT_NDS_TREE_NAME = 86,
	DHCP_OPT_NDS_CONTEXT = 87,
	DHCP_OPT_BCMCS_CONTROLLER_DOMAIN_NAME_LIST = 88,
	DHCP_OPT_BCMCS_CONTROLLER_IPV4_ADDRESS = 89,
	DHCP_OPT_AUTHENTICATION = 90,
	DHCP_OPT_CLIENT_LAST_TRANSACTION_TIME = 91,
	DHCP_OPT_ASSOCIATED_IP = 92,
	DHCP_OPT_CLIENT_SYSYEM = 93,
	DHCP_OPT_CLIENT_NDI = 94,
	DHCP_OPT_LDAP = 95,
	DHCP_OPT_UUID_GUID = 97,
	DHCP_OPT_USER_AUTH = 98,
	DHCP_OPT_GEOCONF_CIVIC = 99,
	DHCP_OPT_PCODE = 100,
	DHCP_OPT_TCODE = 101,
	DHCP_OPT_NETINFO_ADDRESS = 112,
	DHCP_OPT_NETINFO_TAG = 113,
	DHCP_OPT_URL = 114,
	DHCP_OPT_AUTO_CONFIG = 116,
	DHCP_OPT_NAME_SERVICE_SEARCH = 117,
	DHCP_OPT_SUBNET_SELECTION = 118,
	DHCP_OPT_DOMAIN_SEARCH = 119,
	DHCP_OPT_SIP_SERVERS_DCP = 120,
	DHCP_OPT_CLASSLESS_STATIC_ROUTE = 121,
	DHCP_OPT_CCC = 122,
	DHCP_OPT_GEOCONF = 123,
	DHCP_OPT_V_I_VENDOR_CLASS = 124,
	DHCP_OPT_V_I_VENDOR_SPECIFIC_INFO = 125,
	DHCP_OPT_PANA_AGENT = 136,
	DHCP_OPT_V4_LOST = 137,
	DHCP_OPT_CAPWAP_AC_V4 = 138,
	DHCP_OPT_IPV4_ADDRESS_MOS = 139,
	DHCP_OPT_IPV4_FQDN_MOS = 140,
	DHCP_OPT_SIP_UA_CONF = 141,
	DHCP_OPT_IPV4_ADDRESS_ANDSF = 142,
	DHCP_OPT_GEOLOC = 144,
	DHCP_OPT_FORCERENEW_NONCE_CAPABLE = 145,
	DHCP_OPT_RDNSS_SELECTION = 146,
	DHCP_OPT_TFTP_SERVER_ADDRESS = 150,
	DHCP_OPT_STATUS_CODE = 151,
	DHCP_OPT_BASE_TIME = 152,
	DHCP_OPT_START_TIME_OF_STATE = 153,
	DHCP_OPT_QUERY_START_TIME = 154,
	DHCP_OPT_QUERY_END_TIME = 155,
	DHCP_OPT_STATE = 156,
	DHCP_OPT_DATA_SOURCE = 157,
	DHCP_OPT_V4_PCP_SERVER = 158,
	DHCP_OPT_V4_PORTPARAMS = 159,
	DHCP_OPT_CAPTIVE_PORTAL = 160,
	DHCP_OPT_CONF_FILE = 209,
	DHCP_OPT_PATH_PREFIX = 210,
	DHCP_OPT_REBOOT_TIME = 211,
	DHCP_OPT_6RD = 212,
	DHCP_OPT_V4_ACCESS_DOMAIN = 213,
	DHCP_OPT_SUBNET_ALLOCATION = 220,
	DHCP_OPT_VSS = 221,
	DHCP_OPT_END = 255
};

enum dhcp_message_types {
	DHCPDISCOVER = 1,
	DHCPOFFER = 2,
	DHCPREQUEST = 3,
	DHCPDECLINE = 4,
	DHCPACK = 5,
	DHCPNAK = 6,
	DHCPRELEASE = 7,
	DHCPINFORM = 8,
	DHCPFORCERENEW = 9,
	DHCPLEASEQUERY = 10,
	DHCPLEASEUNASSIGNED = 11,
	DHCPLEASEUNKNOWN = 12,
	DHCPLEASEACTIVE = 13,
	DHCPBULKLEASEQUERY = 14,
	DHCPLEASEQUERYDONE = 15,
	DHCPACTIVELEASEQUERY = 16,
	DHCPLEASEQUERYSTATUS = 17,
	DHCPTLS = 18,
};

enum dhcp_relay_agent_suboptions {
	DHCP_RELAY_OPT_AGENT_CIRCUIT_ID = 1,
	DHCP_RELAY_OPT_AGENT_REMOTE_ID = 2,
	DHCP_RELAY_OPT_DOCSIS_DEVICE_CLASS = 4,
	DHCP_RELAY_OPT_LINK_SELECTION = 5,
	DHCP_RELAY_OPT_SUBSCRIBE_ID = 6,
	DHCP_RELAY_OPT_RADIUS_ATTRIBUTES = 7,
	DHCP_RELAY_OPT_AUTHENTICATION = 8,
	DHCP_RELAY_OPT_VEDOR_SPECIFIC = 9,
	DHCP_RELAY_OPT_RELAY_AGENT_FLAGS = 10,
	DHCP_RELAY_OPT_SERVER_ID_OVERRIDE = 11,
	DHCP_RELAY_OPT_RELAY_AGENT_ID = 12,
	DHCP_RELAY_OPT_ACCESS_TECHNOLOGY_TYPE = 13,
	DHCP_RELAY_OPT_ACCESS_NETWORK_NAME = 14,
	DHCP_RELAY_OPT_ACCESS_POINT_NAME = 15,
	DHCP_RELAY_OPT_ACCESS_POINT_BSSID = 16,
	DHCP_RELAY_OPT_OPERATOR_ID = 17,
	DHCP_RELAY_OPT_OPERATOR_REALM = 18,
	DHCP_RELAY_OPT_DHCPV4_VIRTUAL_SUBNET_SELECTION = 151,
	DHCP_RELAY_OPT_DHCPV4_VIRTUAL_SUBNET_SELECTION_CONTROL = 152,
};

enum access_technology_types {
	ACCESS_TECHNOLOGY_VIRTUAL = 1,
	ACCESS_TECHNOLOGY_PPP = 2,
	ACCESS_TECHNOLOGY_ETHERNET = 3,
	ACCESS_TECHNOLOGY_WLAN = 4,
	ACCESS_TECHNOLOGY_WIMAX = 5,
};

#endif /* DHCP_H */