void pim_sock_reset(struct interface *ifp)
{
struct pim_interface *pim_ifp;
zassert(ifp);
zassert(ifp->info);
pim_ifp = ifp->info;
pim_ifp->primary_address = pim_find_primary_addr(ifp);
pim_ifp->pim_sock_fd = -1;
pim_ifp->pim_sock_creation = 0;
pim_ifp->t_pim_sock_read = 0;
pim_ifp->t_pim_hello_timer = 0;
pim_ifp->pim_hello_period = PIM_DEFAULT_HELLO_PERIOD;
pim_ifp->pim_default_holdtime = -1; /* unset: means 3.5 * pim_hello_period */
pim_ifp->pim_triggered_hello_delay = PIM_DEFAULT_TRIGGERED_HELLO_DELAY;
pim_ifp->pim_dr_priority = PIM_DEFAULT_DR_PRIORITY;
pim_ifp->pim_propagation_delay_msec = PIM_DEFAULT_PROPAGATION_DELAY_MSEC;
pim_ifp->pim_override_interval_msec = PIM_DEFAULT_OVERRIDE_INTERVAL_MSEC;
if (PIM_DEFAULT_CAN_DISABLE_JOIN_SUPPRESSION) {
PIM_IF_DO_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options);
}
else {
PIM_IF_DONT_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options);
}
/* neighbors without lan_delay */
pim_ifp->pim_number_of_nonlandelay_neighbors = 0;
pim_ifp->pim_neighbors_highest_propagation_delay_msec = 0;
pim_ifp->pim_neighbors_highest_override_interval_msec = 0;
/* DR Election */
pim_ifp->pim_dr_election_last = 0; /* timestamp */
pim_ifp->pim_dr_election_count = 0;
pim_ifp->pim_dr_election_changes = 0;
pim_ifp->pim_dr_num_nondrpri_neighbors = 0; /* neighbors without dr_pri */
pim_ifp->pim_dr_addr = pim_ifp->primary_address;
pim_ifstat_reset(ifp);
}
static int detect_primary_address_change(struct interface *ifp,
int force_prim_as_any,
const char *caller)
{
struct pim_interface *pim_ifp;
struct in_addr new_prim_addr;
int changed;
pim_ifp = ifp->info;
if (!pim_ifp)
return 0;
if (force_prim_as_any)
new_prim_addr = qpim_inaddr_any;
else
new_prim_addr = pim_find_primary_addr(ifp);
changed = new_prim_addr.s_addr != pim_ifp->primary_address.s_addr;
if (PIM_DEBUG_ZEBRA) {
char new_prim_str[100];
char old_prim_str[100];
pim_inet4_dump("<new?>", new_prim_addr, new_prim_str, sizeof(new_prim_str));
pim_inet4_dump("<old?>", pim_ifp->primary_address, old_prim_str, sizeof(old_prim_str));
zlog_debug("%s: old=%s new=%s on interface %s: %s",
__PRETTY_FUNCTION__,
old_prim_str, new_prim_str, ifp->name,
changed ? "changed" : "unchanged");
}
if (changed) {
struct in_addr old_addr = pim_ifp->primary_address;
pim_ifp->primary_address = new_prim_addr;
on_primary_address_change(ifp, caller, old_addr, new_prim_addr);
}
return changed;
}
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;
}
