lwIP  2.1.0
Lightweight IP stack
Macros
Multicast
lwIP » Options (lwipopts.h) » Infrastructure

Macros

#define LWIP_MULTICAST_TX_OPTIONS   ((LWIP_IGMP || LWIP_IPV6_MLD) && (LWIP_UDP || LWIP_RAW))
 

Detailed Description

Macro Definition Documentation

◆ LWIP_MULTICAST_TX_OPTIONS

#define LWIP_MULTICAST_TX_OPTIONS   ((LWIP_IGMP || LWIP_IPV6_MLD) && (LWIP_UDP || LWIP_RAW))

LWIP_MULTICAST_TX_OPTIONS==1: Enable multicast TX support like the socket options IP_MULTICAST_TTL/IP_MULTICAST_IF/IP_MULTICAST_LOOP, as well as (currently only) core support for the corresponding IPv6 options.