_CONFNET Struct Reference
[Network Configuration, Network Configuration]

#include <sys/confnet.h>

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Detailed Description

Network configuration structure.

Applications may directly access the global variable confnet to read or modify the current network configuration.

Data Fields
u_char	cd_size
	Size of this structure.
char	cd_name [9]
	Magic cookie.
u_char	cdn_mac [6]
	Ethernet MAC address.
u_long	cdn_ip_addr
	Last used IP address.
u_long	cdn_ip_mask
	IP netmask.
u_long	cdn_gateway
	Default route.
u_long	cdn_cip_addr
	Configured IP address.

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Field Documentation

u_char _CONFNET::cd_size

Size of this structure. Used by Nut/Net to verify, that the structure contents is valid after reading it from non-volatile memory.

char _CONFNET::cd_name[9]

Magic cookie. Contains the device name of the network interface.

u_char _CONFNET::cdn_mac[6]

Ethernet MAC address. Unique Ethernet address of the network interface. Examples: tcps/tcps.c.

u_long _CONFNET::cdn_ip_addr

Last used IP address. Each time Nut/Net receives an IP address during boot, it will store the address in here. If no fixed IP address has been configured (cdn_cip_addr contains 0.0.0.0) and if no DHCP server is available, then Nut/Net will use this one, if it is not 0.0.0.0. Examples: ftpd/ftpserv.c, httpd/httpserv.c, inetq/inetq.c, logtime/logtime.c, and tcps/tcps.c.

u_long _CONFNET::cdn_ip_mask

IP netmask. The netmask is used to determine which machines are available in the local network. Examples: ftpd/ftpserv.c, and httpd/httpserv.c.

u_long _CONFNET::cdn_gateway

Default route. Nut/Net will redirect IP packets to this node, if the target IP is not located in the local network. Examples: logtime/logtime.c.

u_long _CONFNET::cdn_cip_addr

Configured IP address. If this address is set to 0.0.0.0, Nut/Net will try to obtain one from the DHCP server.

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