igmp group structure - there is a list of groups for each interface these should really be linked from the interface, but if we keep them separate we will not affect the lwip original code too much More...

#include <igmp.h>

Data Fields
struct igmp_group *	next
	next link
struct netif *	netif
	interface on which the group is active
ip_addr_t	group_address
	multicast address
u8_t	last_reporter_flag
	signifies we were the last person to report
u8_t	group_state
	current state of the group
u16_t	timer
	timer for reporting, negative is OFF
u8_t	use
	counter of simultaneous uses

Detailed Description

igmp group structure - there is a list of groups for each interface these should really be linked from the interface, but if we keep them separate we will not affect the lwip original code too much

There will be a group for the all systems group address but this will not run the state machine as it is used to kick off reports from all the other groups

Definition at line 72 of file LPC1768/lwip/include/ipv4/lwip/igmp.h.