Collaboration diagram for DHCP:

Macros
#define	LWIP_DHCP 0

#define	DHCP_DOES_ARP_CHECK ((LWIP_DHCP) && (LWIP_ARP))

#define	LWIP_DHCP_CHECK_LINK_UP 0

#define	LWIP_DHCP_BOOTP_FILE 0

#define	LWIP_DHCP_GET_NTP_SRV 0

#define	LWIP_DHCP_MAX_NTP_SERVERS 1

#define	LWIP_DHCP_MAX_DNS_SERVERS DNS_MAX_SERVERS

Detailed Description

Macro Definition Documentation

◆ LWIP_DHCP

#define LWIP_DHCP 0

LWIP_DHCP==1: Enable DHCP module.

◆ DHCP_DOES_ARP_CHECK

#define DHCP_DOES_ARP_CHECK ((LWIP_DHCP) && (LWIP_ARP))

DHCP_DOES_ARP_CHECK==1: Do an ARP check on the offered address.

◆ LWIP_DHCP_CHECK_LINK_UP

#define LWIP_DHCP_CHECK_LINK_UP 0

LWIP_DHCP_CHECK_LINK_UP==1: dhcp_start() only really starts if the netif has NETIF_FLAG_LINK_UP set in its flags. As this is only an optimization and netif drivers might not set this flag, the default is off. If enabled, netif_set_link_up() must be called to continue dhcp starting.

◆ LWIP_DHCP_BOOTP_FILE

#define LWIP_DHCP_BOOTP_FILE 0

LWIP_DHCP_BOOTP_FILE==1: Store offered_si_addr and boot_file_name.

◆ LWIP_DHCP_GET_NTP_SRV

#define LWIP_DHCP_GET_NTP_SRV 0

LWIP_DHCP_GETS_NTP==1: Request NTP servers with discover/select. For each response packet, an callback is called, which has to be provided by the port: void dhcp_set_ntp_servers(u8_t num_ntp_servers, ip_addr_t* ntp_server_addrs);

◆ LWIP_DHCP_MAX_NTP_SERVERS

#define LWIP_DHCP_MAX_NTP_SERVERS 1

The maximum of NTP servers requested

◆ LWIP_DHCP_MAX_DNS_SERVERS

#define LWIP_DHCP_MAX_DNS_SERVERS DNS_MAX_SERVERS

LWIP_DHCP_MAX_DNS_SERVERS > 0: Request DNS servers with discover/select. DHCP servers received in the response are passed to DNS via dns_setserver() (up to the maximum limit defined here).

Macros