From bc43a62f4128348b52af50ae75c84ba772c17e29 Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Thu, 13 Jul 2017 16:20:21 +0200 Subject: socket: Allow disabling multicast loop on socket creation This introduces a new flag OSMO_SOCK_F_NO_MCAST_LOOP, which can be used to disable the looping back of multicast packets transmitted throug this socket to other local sockets on the machine. As this looping-back is active by default, a single option to deviate from the default is deemed sufficient. Change-Id: I24a5b1ebc3f84d2d5d4734e54df50efaea26490b --- include/osmocom/core/socket.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'include/osmocom/core/socket.h') diff --git a/include/osmocom/core/socket.h b/include/osmocom/core/socket.h index 6db436ae..695e1d7e 100644 --- a/include/osmocom/core/socket.h +++ b/include/osmocom/core/socket.h @@ -20,6 +20,8 @@ struct osmo_fd; #define OSMO_SOCK_F_BIND (1 << 1) /*! switch socket to non-blocking mode */ #define OSMO_SOCK_F_NONBLOCK (1 << 2) +/*! disable multiast loop (IP_MULTICAST_LOOP) */ +#define OSMO_SOCK_F_NO_MCAST_LOOP (1 << 3) int osmo_sock_init(uint16_t family, uint16_t type, uint8_t proto, const char *host, uint16_t port, unsigned int flags); -- cgit v1.2.3