static void pim_vxlan_term_mr_oif_add(struct pim_vxlan_sg *vxlan_sg)
{
if (vxlan_sg->flags & PIM_VXLAN_SGF_OIF_INSTALLED)
return;
if (PIM_DEBUG_VXLAN)
zlog_debug("vxlan SG %s term-oif %s add",
vxlan_sg->sg_str, vxlan_sg->term_oif->name);
if (pim_ifchannel_local_membership_add(vxlan_sg->term_oif,
&vxlan_sg->sg)) {
vxlan_sg->flags |= PIM_VXLAN_SGF_OIF_INSTALLED;
} else {
zlog_warn("vxlan SG %s term-oif %s add failed",
vxlan_sg->sg_str, vxlan_sg->term_oif->name);
}
}
void igmp_source_forward_start(struct igmp_source *source)
{
struct igmp_group *group;
int result;
if (PIM_DEBUG_IGMP_TRACE) {
char source_str[100];
char group_str[100];
pim_inet4_dump("<source?>", source->source_addr, source_str, sizeof(source_str));
pim_inet4_dump("<group?>", source->source_group->group_addr, group_str, sizeof(group_str));
zlog_debug("%s: (S,G)=(%s,%s) igmp_sock=%d oif=%s fwd=%d",
__PRETTY_FUNCTION__,
source_str, group_str,
source->source_group->group_igmp_sock->fd,
source->source_group->group_igmp_sock->interface->name,
IGMP_SOURCE_TEST_FORWARDING(source->source_flags));
}
/* Prevent IGMP interface from installing multicast route multiple
times */
if (IGMP_SOURCE_TEST_FORWARDING(source->source_flags)) {
return;
}
group = source->source_group;
if (!source->source_channel_oil) {
struct pim_interface *pim_oif;
int input_iface_vif_index = fib_lookup_if_vif_index(source->source_addr);
if (input_iface_vif_index < 1) {
char source_str[100];
pim_inet4_dump("<source?>", source->source_addr, source_str, sizeof(source_str));
zlog_warn("%s %s: could not find input interface for source %s",
__FILE__, __PRETTY_FUNCTION__,
source_str);
return;
}
/*
Protect IGMP against adding looped MFC entries created by both
source and receiver attached to the same interface. See TODO
T22.
*/
pim_oif = source->source_group->group_igmp_sock->interface->info;
if (!pim_oif) {
zlog_warn("%s: multicast not enabled on oif=%s ?",
__PRETTY_FUNCTION__,
source->source_group->group_igmp_sock->interface->name);
return;
}
if (pim_oif->mroute_vif_index < 1) {
zlog_warn("%s %s: oif=%s vif_index=%d < 1",
__FILE__, __PRETTY_FUNCTION__,
source->source_group->group_igmp_sock->interface->name,
pim_oif->mroute_vif_index);
return;
}
if (input_iface_vif_index == pim_oif->mroute_vif_index) {
/* ignore request for looped MFC entry */
if (PIM_DEBUG_IGMP_TRACE) {
char source_str[100];
char group_str[100];
pim_inet4_dump("<source?>", source->source_addr, source_str, sizeof(source_str));
pim_inet4_dump("<group?>", source->source_group->group_addr, group_str, sizeof(group_str));
zlog_debug("%s: ignoring request for looped MFC entry (S,G)=(%s,%s): igmp_sock=%d oif=%s vif_index=%d",
__PRETTY_FUNCTION__,
source_str, group_str,
source->source_group->group_igmp_sock->fd,
source->source_group->group_igmp_sock->interface->name,
input_iface_vif_index);
}
return;
}
source->source_channel_oil = pim_channel_oil_add(group->group_addr,
source->source_addr,
input_iface_vif_index);
if (!source->source_channel_oil) {
char group_str[100];
char source_str[100];
pim_inet4_dump("<group?>", group->group_addr, group_str, sizeof(group_str));
pim_inet4_dump("<source?>", source->source_addr, source_str, sizeof(source_str));
zlog_warn("%s %s: could not create OIL for channel (S,G)=(%s,%s)",
__FILE__, __PRETTY_FUNCTION__,
source_str, group_str);
return;
}
}
result = add_oif(source->source_channel_oil,
group->group_igmp_sock->interface,
PIM_OIF_FLAG_PROTO_IGMP);
if (result) {
zlog_warn("%s: add_oif() failed with return=%d",
__func__, result);
return;
}
/*
Feed IGMPv3-gathered local membership information into PIM
per-interface (S,G) state.
*/
pim_ifchannel_local_membership_add(group->group_igmp_sock->interface,
source->source_addr, group->group_addr);
IGMP_SOURCE_DO_FORWARDING(source->source_flags);
}