static int pim_zebra_if_address_del(int command, struct zclient *client,
zebra_size_t length)
{
struct connected *c;
struct prefix *p;
zassert(command == ZEBRA_INTERFACE_ADDRESS_DELETE);
/*
zebra api notifies address adds/dels events by using the same call
interface_add_read below, see comments in lib/zclient.c
zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_DELETE, ...)
will remove address from interface list by calling
connected_delete_by_prefix()
*/
c = zebra_interface_address_read(command, client->ibuf);
if (!c)
return 0;
p = c->address;
if (p->family != AF_INET)
return 0;
if (PIM_DEBUG_ZEBRA) {
char buf[BUFSIZ];
prefix2str(p, buf, BUFSIZ);
zlog_debug("%s: %s disconnected IP address %s flags %u %s",
__PRETTY_FUNCTION__,
c->ifp->name, buf, c->flags,
CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) ? "secondary" : "primary");
#ifdef PIM_DEBUG_IFADDR_DUMP
dump_if_address(c->ifp);
#endif
}
pim_if_addr_del(c, 0);
return 0;
}
static int pim_zebra_if_address_add(int command, struct zclient *zclient,
zebra_size_t length, vrf_id_t vrf_id)
{
struct connected *c;
struct prefix *p;
/*
zebra api notifies address adds/dels events by using the same call
interface_add_read below, see comments in lib/zclient.c
zebra_interface_address_read(ZEBRA_INTERFACE_ADDRESS_ADD, ...)
will add address to interface list by calling
connected_add_by_prefix()
*/
c = zebra_interface_address_read(command, zclient->ibuf, vrf_id);
if (!c)
return 0;
p = c->address;
if (p->family != AF_INET)
return 0;
if (PIM_DEBUG_ZEBRA) {
char buf[BUFSIZ];
prefix2str(p, buf, BUFSIZ);
zlog_debug("%s: %s connected IP address %s flags %u %s",
__PRETTY_FUNCTION__,
c->ifp->name, buf, c->flags,
CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY) ? "secondary" : "primary");
#ifdef PIM_DEBUG_IFADDR_DUMP
dump_if_address(c->ifp);
#endif
}
if (!CHECK_FLAG(c->flags, ZEBRA_IFA_SECONDARY)) {
/* trying to add primary address */
struct in_addr primary_addr = pim_find_primary_addr(c->ifp);
if (primary_addr.s_addr != p->u.prefix4.s_addr) {
if (PIM_DEBUG_ZEBRA) {
/* but we had a primary address already */
char buf[BUFSIZ];
char old[100];
prefix2str(p, buf, BUFSIZ);
pim_inet4_dump("<old?>", primary_addr, old, sizeof(old));
zlog_warn("%s: %s primary addr old=%s: forcing secondary flag on new=%s",
__PRETTY_FUNCTION__,
c->ifp->name, old, buf);
}
SET_FLAG(c->flags, ZEBRA_IFA_SECONDARY);
}
}
pim_if_addr_add(c);
return 0;
}
