dhcp.h

#ifndef CLICKNET_DHCP_H
#define CLICKNET_DHCP_H
 
struct click_dhcp {
        uint8_t  op;           /* message type */
        uint8_t  htype;        /* hardware address type */
        uint8_t  hlen;         /* hardware address length */
        uint8_t  hops;         /* should be zero in client's message */
        uint32_t xid;          /* transaction id */
        uint16_t secs;         /* elapsed time in sec. from trying to boot */
        uint16_t flags;
        uint32_t ciaddr;       /* (previously allocated) client IP address */
        uint32_t yiaddr;       /* 'your' client IP address */
        uint32_t siaddr;       /* should be zero in client's messages */
        uint32_t giaddr;       /* should be zero in client's messages */
        uint8_t  chaddr[16];   /* client's hardware address */
        uint8_t  sname[64];    /* server host name, null terminated string */
        uint8_t  file[128];    /* boot file name, null terminated string */
        uint32_t magic;        /* magic cookie */
        uint8_t  options[312]; /* message options */
} CLICK_SIZE_PACKED_ATTRIBUTE;
 
 
#define ETH_10MB        1 /* htype */
#define ETH_10MB_LEN    6 /* hlen */
 
/* DHCP message OP code */
#define DHCP_BOOTREQUEST        1
#define DHCP_BOOTREPLY          2
 
/* DHCP Client State*/
enum dhcp_client_state {
        DHCP_CLIENT_INIT_STATE = 1,
        DHCP_CLIENT_SELECTING_STATE,
        DHCP_CLIENT_REQUESTING_STATE,
        DHCP_CLIENT_INIT_REBOOT,
        DHCP_CLIENT_REBOOTING,
        DHCP_CLIENT_BOUND,
        DHCP_CLIENT_RENEWING,
        DHCP_CLIENT_REBINDING
};
 
 
/* DHCP message type */
#define DHCP_DISCOVER           1
#define DHCP_OFFER              2
#define DHCP_REQUEST            3
#define DHCP_DECLINE            4
#define DHCP_ACK                5
#define DHCP_NACK               6
#define DHCP_RELEASE            7
#define DHCP_INFORM             8
 
#define DHCP_MAGIC 0x63538263
 
 
 
/* DHCP Option codes: */
#define DHO_PAD                         0
#define DHO_SUBNET_MASK                 1
#define DHO_TIME_OFFSET                 2
#define DHO_ROUTERS                     3
#define DHO_TIME_SERVERS                4
#define DHO_NAME_SERVERS                5
#define DHO_DOMAIN_NAME_SERVERS         6
#define DHO_LOG_SERVERS                 7
#define DHO_COOKIE_SERVERS              8
#define DHO_LPR_SERVERS                 9
#define DHO_IMPRESS_SERVERS             10
#define DHO_RESOURCE_LOCATION_SERVERS   11
#define DHO_HOST_NAME                   12
#define DHO_BOOT_SIZE                   13
#define DHO_MERIT_DUMP                  14
#define DHO_DOMAIN_NAME                 15
#define DHO_SWAP_SERVER                 16
#define DHO_ROOT_PATH                   17
#define DHO_EXTENSIONS_PATH             18
#define DHO_IP_FORWARDING               19
#define DHO_NON_LOCAL_SOURCE_ROUTING    20
#define DHO_POLICY_FILTER               21
#define DHO_MAX_DGRAM_REASSEMBLY        22
#define DHO_DEFAULT_IP_TTL              23
#define DHO_PATH_MTU_AGING_TIMEOUT      24
#define DHO_PATH_MTU_PLATEAU_TABLE      25
#define DHO_INTERFACE_MTU               26
#define DHO_ALL_SUBNETS_LOCAL           27
#define DHO_BROADCAST_ADDRESS           28
#define DHO_PERFORM_MASK_DISCOVERY      29
#define DHO_MASK_SUPPLIER               30
#define DHO_ROUTER_DISCOVERY            31
#define DHO_ROUTER_SOLICITATION_ADDRESS 32
#define DHO_STATIC_ROUTES               33
#define DHO_TRAILER_ENCAPSULATION       34
#define DHO_ARP_CACHE_TIMEOUT           35
#define DHO_IEEE802_3_ENCAPSULATION     36
#define DHO_DEFAULT_TCP_TTL             37
#define DHO_TCP_KEEPALIVE_INTERVAL      38
#define DHO_TCP_KEEPALIVE_GARBAGE       39
#define DHO_NIS_DOMAIN                  40
#define DHO_NIS_SERVERS                 41
#define DHO_NTP_SERVERS                 42
#define DHO_VENDOR_ENCAPSULATED_OPTIONS 43
#define DHO_NETBIOS_NAME_SERVERS        44
#define DHO_NETBIOS_DD_SERVER           45
#define DHO_NETBIOS_NODE_TYPE           46
#define DHO_NETBIOS_SCOPE               47
#define DHO_FONT_SERVERS                48
#define DHO_X_DISPLAY_MANAGER           49
#define DHO_DHCP_REQUESTED_ADDRESS      50
#define DHO_DHCP_LEASE_TIME             51
#define DHO_DHCP_OPTION_OVERLOAD        52
#define DHO_DHCP_MESSAGE_TYPE           53
#define DHO_DHCP_SERVER_IDENTIFIER      54
#define DHO_DHCP_PARAMETER_REQUEST_LIST 55
#define DHO_DHCP_MESSAGE                56
#define DHO_DHCP_MAX_MESSAGE_SIZE       57
#define DHO_DHCP_RENEWAL_TIME           58
#define DHO_DHCP_REBINDING_TIME         59
#define DHO_VENDOR_CLASS_IDENTIFIER     60
#define DHO_DHCP_CLIENT_IDENTIFIER      61
#define DHO_NWIP_DOMAIN_NAME            62
#define DHO_NWIP_SUBOPTIONS             63
#define DHO_USER_CLASS                  77
#define DHO_FQDN                        81
#define DHO_DHCP_AGENT_OPTIONS          82
#define DHO_SUBNET_SELECTION            118 /* RFC3011! */
#define DHO_END                         255
 
#endif /* CLICKNET_DHCP_H */