![](/media/cache/profiles/68a15b5278e4f7c4c056df9d5f1d3b1f.jpg.50x50_q85.jpg)
This is an OSC library for the mbed, created to be compatible with Recotana\'s OSCClass library (http://recotana.com) for the Arduino with Ethernet shield. I have also used parts of the OSC Transceiver(Sender/Receiver) code by xshige. It has many limitations, but it works for simple things (check comments on the mbedOSC.h). It will be evolving. written by: Alvaro Cassinelli, 7.10.2011
EthernetNetIf/LPC2368/lwip/include/lwip/dhcp.h
- Committer:
- mbedalvaro
- Date:
- 2011-10-15
- Revision:
- 0:f76708a93fb3
File content as of revision 0:f76708a93fb3:
/** @file */ #ifndef __LWIP_DHCP_H__ #define __LWIP_DHCP_H__ #include "lwip/opt.h" #if LWIP_DHCP /* don't build if not configured for use in lwipopts.h */ #include "lwip/netif.h" #include "lwip/udp.h" #ifdef __cplusplus extern "C" { #endif /** period (in seconds) of the application calling dhcp_coarse_tmr() */ #define DHCP_COARSE_TIMER_SECS 60 /** period (in milliseconds) of the application calling dhcp_coarse_tmr() */ #define DHCP_COARSE_TIMER_MSECS (DHCP_COARSE_TIMER_SECS * 1000UL) /** period (in milliseconds) of the application calling dhcp_fine_tmr() */ #define DHCP_FINE_TIMER_MSECS 500 #define DHCP_CHADDR_LEN 16U #define DHCP_SNAME_LEN 64U #define DHCP_FILE_LEN 128U struct dhcp { /** transaction identifier of last sent request */ u32_t xid; /** our connection to the DHCP server */ struct udp_pcb *pcb; /** incoming msg */ struct dhcp_msg *msg_in; /** current DHCP state machine state */ u8_t state; /** retries of current request */ u8_t tries; #if LWIP_DHCP_AUTOIP_COOP u8_t autoip_coop_state; #endif u8_t subnet_mask_given; struct pbuf *p_out; /* pbuf of outcoming msg */ struct dhcp_msg *msg_out; /* outgoing msg */ u16_t options_out_len; /* outgoing msg options length */ u16_t request_timeout; /* #ticks with period DHCP_FINE_TIMER_SECS for request timeout */ u16_t t1_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for renewal time */ u16_t t2_timeout; /* #ticks with period DHCP_COARSE_TIMER_SECS for rebind time */ ip_addr_t server_ip_addr; /* dhcp server address that offered this lease */ ip_addr_t offered_ip_addr; ip_addr_t offered_sn_mask; ip_addr_t offered_gw_addr; u32_t offered_t0_lease; /* lease period (in seconds) */ u32_t offered_t1_renew; /* recommended renew time (usually 50% of lease period) */ u32_t offered_t2_rebind; /* recommended rebind time (usually 66% of lease period) */ /* @todo: LWIP_DHCP_BOOTP_FILE configuration option? integrate with possible TFTP-client for booting? */ #if LWIP_DHCP_BOOTP_FILE ip_addr_t offered_si_addr; char boot_file_name[DHCP_FILE_LEN]; #endif /* LWIP_DHCP_BOOTPFILE */ }; /* MUST be compiled with "pack structs" or equivalent! */ #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/bpstruct.h" #endif PACK_STRUCT_BEGIN /** minimum set of fields of any DHCP message */ struct dhcp_msg { PACK_STRUCT_FIELD(u8_t op); PACK_STRUCT_FIELD(u8_t htype); PACK_STRUCT_FIELD(u8_t hlen); PACK_STRUCT_FIELD(u8_t hops); PACK_STRUCT_FIELD(u32_t xid); PACK_STRUCT_FIELD(u16_t secs); PACK_STRUCT_FIELD(u16_t flags); PACK_STRUCT_FIELD(ip_addr_p_t ciaddr); PACK_STRUCT_FIELD(ip_addr_p_t yiaddr); PACK_STRUCT_FIELD(ip_addr_p_t siaddr); PACK_STRUCT_FIELD(ip_addr_p_t giaddr); PACK_STRUCT_FIELD(u8_t chaddr[DHCP_CHADDR_LEN]); PACK_STRUCT_FIELD(u8_t sname[DHCP_SNAME_LEN]); PACK_STRUCT_FIELD(u8_t file[DHCP_FILE_LEN]); PACK_STRUCT_FIELD(u32_t cookie); #define DHCP_MIN_OPTIONS_LEN 68U /** make sure user does not configure this too small */ #if ((defined(DHCP_OPTIONS_LEN)) && (DHCP_OPTIONS_LEN < DHCP_MIN_OPTIONS_LEN)) # undef DHCP_OPTIONS_LEN #endif /** allow this to be configured in lwipopts.h, but not too small */ #if (!defined(DHCP_OPTIONS_LEN)) /** set this to be sufficient for your options in outgoing DHCP msgs */ # define DHCP_OPTIONS_LEN DHCP_MIN_OPTIONS_LEN #endif PACK_STRUCT_FIELD(u8_t options[DHCP_OPTIONS_LEN]); } PACK_STRUCT_STRUCT; PACK_STRUCT_END #ifdef PACK_STRUCT_USE_INCLUDES # include "arch/epstruct.h" #endif void dhcp_set_struct(struct netif *netif, struct dhcp *dhcp); /** start DHCP configuration */ err_t dhcp_start(struct netif *netif); /** enforce early lease renewal (not needed normally)*/ err_t dhcp_renew(struct netif *netif); /** release the DHCP lease, usually called before dhcp_stop()*/ err_t dhcp_release(struct netif *netif); /** stop DHCP configuration */ void dhcp_stop(struct netif *netif); /** inform server of our manual IP address */ void dhcp_inform(struct netif *netif); /** Handle a possible change in the network configuration */ void dhcp_network_changed(struct netif *netif); /** if enabled, check whether the offered IP address is not in use, using ARP */ #if DHCP_DOES_ARP_CHECK void dhcp_arp_reply(struct netif *netif, ip_addr_t *addr); #endif /** to be called every minute */ void dhcp_coarse_tmr(void); /** to be called every half second */ void dhcp_fine_tmr(void); /** DHCP message item offsets and length */ #define DHCP_OP_OFS 0 #define DHCP_HTYPE_OFS 1 #define DHCP_HLEN_OFS 2 #define DHCP_HOPS_OFS 3 #define DHCP_XID_OFS 4 #define DHCP_SECS_OFS 8 #define DHCP_FLAGS_OFS 10 #define DHCP_CIADDR_OFS 12 #define DHCP_YIADDR_OFS 16 #define DHCP_SIADDR_OFS 20 #define DHCP_GIADDR_OFS 24 #define DHCP_CHADDR_OFS 28 #define DHCP_SNAME_OFS 44 #define DHCP_FILE_OFS 108 #define DHCP_MSG_LEN 236 #define DHCP_COOKIE_OFS DHCP_MSG_LEN #define DHCP_OPTIONS_OFS (DHCP_MSG_LEN + 4) #define DHCP_CLIENT_PORT 68 #define DHCP_SERVER_PORT 67 /** DHCP client states */ #define DHCP_OFF 0 #define DHCP_REQUESTING 1 #define DHCP_INIT 2 #define DHCP_REBOOTING 3 #define DHCP_REBINDING 4 #define DHCP_RENEWING 5 #define DHCP_SELECTING 6 #define DHCP_INFORMING 7 #define DHCP_CHECKING 8 #define DHCP_PERMANENT 9 #define DHCP_BOUND 10 /** not yet implemented #define DHCP_RELEASING 11 */ #define DHCP_BACKING_OFF 12 /** AUTOIP cooperatation flags */ #define DHCP_AUTOIP_COOP_STATE_OFF 0 #define DHCP_AUTOIP_COOP_STATE_ON 1 #define DHCP_BOOTREQUEST 1 #define DHCP_BOOTREPLY 2 /** DHCP message types */ #define DHCP_DISCOVER 1 #define DHCP_OFFER 2 #define DHCP_REQUEST 3 #define DHCP_DECLINE 4 #define DHCP_ACK 5 #define DHCP_NAK 6 #define DHCP_RELEASE 7 #define DHCP_INFORM 8 /** DHCP hardware type, currently only ethernet is supported */ #define DHCP_HTYPE_ETH 1 #define DHCP_MAGIC_COOKIE 0x63825363UL /* This is a list of options for BOOTP and DHCP, see RFC 2132 for descriptions */ /** BootP options */ #define DHCP_OPTION_PAD 0 #define DHCP_OPTION_SUBNET_MASK 1 /* RFC 2132 3.3 */ #define DHCP_OPTION_ROUTER 3 #define DHCP_OPTION_DNS_SERVER 6 #define DHCP_OPTION_HOSTNAME 12 #define DHCP_OPTION_IP_TTL 23 #define DHCP_OPTION_MTU 26 #define DHCP_OPTION_BROADCAST 28 #define DHCP_OPTION_TCP_TTL 37 #define DHCP_OPTION_END 255 /** DHCP options */ #define DHCP_OPTION_REQUESTED_IP 50 /* RFC 2132 9.1, requested IP address */ #define DHCP_OPTION_LEASE_TIME 51 /* RFC 2132 9.2, time in seconds, in 4 bytes */ #define DHCP_OPTION_OVERLOAD 52 /* RFC2132 9.3, use file and/or sname field for options */ #define DHCP_OPTION_MESSAGE_TYPE 53 /* RFC 2132 9.6, important for DHCP */ #define DHCP_OPTION_MESSAGE_TYPE_LEN 1 #define DHCP_OPTION_SERVER_ID 54 /* RFC 2132 9.7, server IP address */ #define DHCP_OPTION_PARAMETER_REQUEST_LIST 55 /* RFC 2132 9.8, requested option types */ #define DHCP_OPTION_MAX_MSG_SIZE 57 /* RFC 2132 9.10, message size accepted >= 576 */ #define DHCP_OPTION_MAX_MSG_SIZE_LEN 2 #define DHCP_OPTION_T1 58 /* T1 renewal time */ #define DHCP_OPTION_T2 59 /* T2 rebinding time */ #define DHCP_OPTION_US 60 #define DHCP_OPTION_CLIENT_ID 61 #define DHCP_OPTION_TFTP_SERVERNAME 66 #define DHCP_OPTION_BOOTFILE 67 /** possible combinations of overloading the file and sname fields with options */ #define DHCP_OVERLOAD_NONE 0 #define DHCP_OVERLOAD_FILE 1 #define DHCP_OVERLOAD_SNAME 2 #define DHCP_OVERLOAD_SNAME_FILE 3 #ifdef __cplusplus } #endif #endif /* LWIP_DHCP */ #endif /*__LWIP_DHCP_H__*/