From 37d204a120a49c83775f1b3a5deab1446398760d Mon Sep 17 00:00:00 2001 From: Harald Welte Date: Thu, 13 Jul 2017 16:33:16 +0200 Subject: socket: Add new OSMO_SOCK_F_NO_MCAST_ALL option Using this option at socket creation, the caller can request disabling the IP_MULTICAST_ALL socket option. Change-Id: I5ab5de45c0b64ceb3636ea98245a23defa24ffd4 --- src/socket.c | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'src') diff --git a/src/socket.c b/src/socket.c index c7d081c3..ca50b6f4 100644 --- a/src/socket.c +++ b/src/socket.c @@ -132,6 +132,16 @@ static int osmo_sock_init_tail(int fd, uint16_t type, unsigned int flags) } } + if (flags & OSMO_SOCK_F_NO_MCAST_ALL) { + rc = osmo_sock_mcast_all_set(fd, false); + if (rc < 0) { + LOGP(DLGLOBAL, LOGL_ERROR, "unable to disable receive of all multicast: %s\n", + strerror(errno)); + /* do not abort here, as this is just an + * optional additional optimization that only + * exists on Linux only */ + } + } return 0; } -- cgit v1.2.3