From f9c799a00e705b1420b214628c2bb2a30bf491d9 Mon Sep 17 00:00:00 2001 From: Ondrej Zajicek Date: Fri, 4 Sep 2009 11:06:51 +0200 Subject: Temporary OSPFv3 development commit (changing multicast support). --- sysdep/bsd/sysio.h | 51 +++++++++++++++++++++++++++++---------------------- 1 file changed, 29 insertions(+), 22 deletions(-) (limited to 'sysdep/bsd') diff --git a/sysdep/bsd/sysio.h b/sysdep/bsd/sysio.h index b0ec456e..80f8f942 100644 --- a/sysdep/bsd/sysio.h +++ b/sysdep/bsd/sysio.h @@ -27,48 +27,55 @@ set_inaddr(struct in_addr * ia, ip_addr a) } static inline char * -sysio_mcast_setup(sock * s) +sysio_setup_multicast(sock *s) { - u8 zero = 0; - u8 one = 1; + struct in_addr m; + u8 zero = 0; + u8 ttl = s->ttl; - if (ipa_nonzero(s->daddr)) { + if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_LOOP, &zero, sizeof(zero)) < 0) + return "IP_MULTICAST_LOOP"; - if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_LOOP, &zero, sizeof(zero)) < 0) - return "IP_MULTICAST_LOOP"; + if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_TTL, &ttl, sizeof(ttl)) < 0) + return "IP_MULTICAST_TTL"; + + /* This defines where should we send _outgoing_ multicasts */ + set_inaddr(&m, s->iface->addr->ip); + if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0) + return "IP_MULTICAST_IF"; - if (setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_TTL, &one, sizeof(one)) < 0) - return "IP_MULTICAST_TTL"; - } return NULL; } static inline char * -sysio_mcast_join(sock * s) +sysio_join_group(sock *s, ip_addr maddr) { - struct in_addr m; struct ip_mreq mreq; - char *err; - - set_inaddr(&m, s->iface->addr->ip ); bzero(&mreq, sizeof(mreq)); set_inaddr(&mreq.imr_interface, s->iface->addr->ip); - set_inaddr(&mreq.imr_multiaddr, s->daddr); + set_inaddr(&mreq.imr_multiaddr, maddr); /* And this one sets interface for _receiving_ multicasts from */ - if (ipa_nonzero(s->daddr) && - setsockopt(s->fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) + if (setsockopt(s->fd, IPPROTO_IP, IP_ADD_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) return "IP_ADD_MEMBERSHIP"; + return NULL; +} - /* This defines where should we send _outgoing_ multicasts */ - if (ipa_nonzero(s->daddr) && setsockopt(s->fd, IPPROTO_IP, IP_MULTICAST_IF, &m, sizeof(m)) < 0) - return "IP_MULTICAST_IF"; +static inline char * +sysio_leave_group(sock *s, ip_addr maddr) +{ + struct ip_mreq mreq; - if (err = sysio_mcast_setup(s)) - return err; + bzero(&mreq, sizeof(mreq)); + set_inaddr(&mreq.imr_interface, s->iface->addr->ip); + set_inaddr(&mreq.imr_multiaddr, maddr); + + /* And this one sets interface for _receiving_ multicasts from */ + if (setsockopt(s->fd, IPPROTO_IP, IP_DROP_MEMBERSHIP, &mreq, sizeof(mreq)) < 0) + return "IP_DROP_MEMBERSHIP"; return NULL; } -- cgit v1.2.3