static void pim_if_addr_del_pim(struct connected *ifc)
{
struct pim_interface *pim_ifp = ifc->ifp->info;
if (ifc->address->family != AF_INET) {
/* non-IPv4 address */
return;
}
if (!pim_ifp) {
/* PIM not enabled on interface */
return;
}
if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) {
/* Interface keeps a valid primary address */
return;
}
if (pim_ifp->pim_sock_fd < 0) {
/* Interface does not hold a valid socket any longer */
return;
}
/*
pim_sock_delete() closes the socket, stops read and timer threads,
and kills all neighbors.
*/
pim_sock_delete(ifc->ifp, "last address has been removed from interface");
}
static void pim_msdp_sa_peer_ip_set(struct pim_msdp_sa *sa,
struct pim_msdp_peer *mp, struct in_addr rp)
{
struct pim_msdp_peer *old_mp;
/* optimize the "no change" case as it will happen
* frequently/periodically */
if (mp && (sa->peer.s_addr == mp->peer.s_addr)) {
return;
}
/* any time the peer ip changes also update the rp address */
if (PIM_INADDR_ISNOT_ANY(sa->peer)) {
old_mp = pim_msdp_peer_find(sa->pim, sa->peer);
if (old_mp && old_mp->sa_cnt) {
--old_mp->sa_cnt;
}
}
if (mp) {
++mp->sa_cnt;
sa->peer = mp->peer;
} else {
sa->peer.s_addr = PIM_NET_INADDR_ANY;
}
sa->rp = rp;
}
void pim_if_addr_add(struct connected *ifc)
{
struct pim_interface *pim_ifp;
struct interface *ifp;
struct in_addr ifaddr;
zassert(ifc);
ifp = ifc->ifp;
zassert(ifp);
pim_ifp = ifp->info;
if (!pim_ifp)
return;
if (!if_is_operative(ifp))
return;
/* if (PIM_DEBUG_ZEBRA) */ {
char buf[BUFSIZ];
prefix2str(ifc->address, buf, BUFSIZ);
zlog_debug("%s: %s ifindex=%d connected IP address %s %s",
__PRETTY_FUNCTION__,
ifp->name, ifp->ifindex, buf,
CHECK_FLAG(ifc->flags, ZEBRA_IFA_SECONDARY) ?
"secondary" : "primary");
}
ifaddr = ifc->address->u.prefix4;
detect_address_change(ifp, 0, __PRETTY_FUNCTION__);
if (PIM_IF_TEST_IGMP(pim_ifp->options)) {
struct igmp_sock *igmp;
/* lookup IGMP socket */
igmp = pim_igmp_sock_lookup_ifaddr(pim_ifp->igmp_socket_list,
ifaddr);
if (!igmp) {
/* if addr new, add IGMP socket */
pim_igmp_sock_add(pim_ifp->igmp_socket_list, ifaddr, ifp);
}
} /* igmp */
if (PIM_IF_TEST_PIM(pim_ifp->options)) {
/* Interface has a valid primary address ? */
if (PIM_INADDR_ISNOT_ANY(pim_ifp->primary_address)) {
/* Interface has a valid socket ? */
if (pim_ifp->pim_sock_fd < 0) {
if (pim_sock_add(ifp)) {
zlog_warn("Failure creating PIM socket for interface %s",
ifp->name);
}
}
}
} /* pim */
if (PIM_MROUTE_IS_ENABLED) {
/*
PIM or IGMP is enabled on interface, and there is at least one
address assigned, then try to create a vif_index.
*/
if (pim_ifp->mroute_vif_index < 0) {
pim_if_add_vif(ifp);
}
}
}
