/*
  PIM for Quagga
  Copyright (C) 2008  Everton da Silva Marques

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful, but
  WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  General Public License for more details.
  
  You should have received a copy of the GNU General Public License
  along with this program; see the file COPYING; if not, write to the
  Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
  MA 02110-1301 USA
  
  $QuaggaId: $Format:%an, %ai, %h$ $
*/

#include <sys/ioctl.h>

#include <zebra.h>

#include "command.h"
#include "if.h"
#include "prefix.h"

#include "pimd.h"
#include "pim_cmd.h"
#include "pim_iface.h"
#include "pim_vty.h"
#include "pim_mroute.h"
#include "pim_str.h"
#include "pim_igmpv3.h"
#include "pim_sock.h"
#include "pim_time.h"
#include "pim_util.h"
#include "pim_oil.h"
#include "pim_neighbor.h"
#include "pim_pim.h"
#include "pim_ifchannel.h"
#include "pim_hello.h"
#include "pim_msg.h"
#include "pim_upstream.h"
#include "pim_rpf.h"
#include "pim_macro.h"
#include "pim_ssmpingd.h"

static struct cmd_node pim_global_node = {
  PIM_NODE,
  "",
  1 /* vtysh ? yes */
};

static struct cmd_node interface_node = {
  INTERFACE_NODE,
  "%s(config-if)# ",
  1 /* vtysh ? yes */
};

static void pim_if_membership_clear(struct interface *ifp)
{
  struct pim_interface *pim_ifp;

  pim_ifp = ifp->info;
  zassert(pim_ifp);

  if (PIM_IF_TEST_PIM(pim_ifp->options) &&
      PIM_IF_TEST_IGMP(pim_ifp->options)) {
    return;
  }

  pim_ifchannel_membership_clear(ifp);
}

/*
  When PIM is disabled on interface, IGMPv3 local membership
  information is not injected into PIM interface state.

  The function pim_if_membership_refresh() fetches all IGMPv3 local
  membership information into PIM. It is intented to be called
  whenever PIM is enabled on the interface in order to collect missed
  local membership information.
 */
static void pim_if_membership_refresh(struct interface *ifp)
{
  struct pim_interface *pim_ifp;
  struct listnode      *sock_node;
  struct igmp_sock     *igmp;

  pim_ifp = ifp->info;
  zassert(pim_ifp);

  if (!PIM_IF_TEST_PIM(pim_ifp->options))
    return;
  if (!PIM_IF_TEST_IGMP(pim_ifp->options))
    return;

  /*
    First clear off membership from all PIM (S,G) entries on the
    interface
  */

  pim_ifchannel_membership_clear(ifp);

  /*
    Then restore PIM (S,G) membership from all IGMPv3 (S,G) entries on
    the interface
  */

  /* scan igmp sockets */
  for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
    struct listnode   *grpnode;
    struct igmp_group *grp;
    
    /* scan igmp groups */
    for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, grpnode, grp)) {
      struct listnode    *srcnode;
      struct igmp_source *src;
      
      /* scan group sources */
      for (ALL_LIST_ELEMENTS_RO(grp->group_source_list, srcnode, src)) {

	if (IGMP_SOURCE_TEST_FORWARDING(src->source_flags)) {
	  pim_ifchannel_local_membership_add(ifp,
					     src->source_addr,
					     grp->group_addr);
	}
	
      } /* scan group sources */
    } /* scan igmp groups */
  } /* scan igmp sockets */

  /*
    Finally delete every PIM (S,G) entry lacking all state info
   */

  pim_ifchannel_delete_on_noinfo(ifp);

}

static void pim_show_assert(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();

  vty_out(vty,
	  "Interface Address         Source          Group           State  Winner          Uptime   Timer%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *ch_node;
    struct pim_ifchannel *ch;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) {
      char ch_src_str[100];
      char ch_grp_str[100];
      char winner_str[100];
      char uptime[10];
      char timer[10];

      pim_inet4_dump("<ch_src?>", ch->source_addr,
		     ch_src_str, sizeof(ch_src_str));
      pim_inet4_dump("<ch_grp?>", ch->group_addr,
		     ch_grp_str, sizeof(ch_grp_str));
      pim_inet4_dump("<assrt_win?>", ch->ifassert_winner,
		     winner_str, sizeof(winner_str));

      pim_time_uptime(uptime, sizeof(uptime), now - ch->ifassert_creation);
      pim_time_timer_to_mmss(timer, sizeof(timer),
			     ch->t_ifassert_timer);

      vty_out(vty, "%-9s %-15s %-15s %-15s %-6s %-15s %-8s %-5s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      ch_src_str,
	      ch_grp_str,
	      pim_ifchannel_ifassert_name(ch->ifassert_state),
	      winner_str,
	      uptime,
	      timer,
	      VTY_NEWLINE);
    } /* scan interface channels */
  } /* scan interfaces */
}

static void pim_show_assert_internal(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;

  vty_out(vty,
	  "CA:   CouldAssert%s"
	  "ECA:  Evaluate CouldAssert%s"
	  "ATD:  AssertTrackingDesired%s"
	  "eATD: Evaluate AssertTrackingDesired%s%s",
	  VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);

  vty_out(vty,
	  "Interface Address         Source          Group           CA  eCA ATD eATD%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *ch_node;
    struct pim_ifchannel *ch;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) {
      char ch_src_str[100];
      char ch_grp_str[100];

      pim_inet4_dump("<ch_src?>", ch->source_addr,
		     ch_src_str, sizeof(ch_src_str));
      pim_inet4_dump("<ch_grp?>", ch->group_addr,
		     ch_grp_str, sizeof(ch_grp_str));
      vty_out(vty, "%-9s %-15s %-15s %-15s %-3s %-3s %-3s %-4s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      ch_src_str,
	      ch_grp_str,
	      PIM_IF_FLAG_TEST_COULD_ASSERT(ch->flags) ? "yes" : "no",
	      pim_macro_ch_could_assert_eval(ch) ? "yes" : "no",
	      PIM_IF_FLAG_TEST_ASSERT_TRACKING_DESIRED(ch->flags) ? "yes" : "no",
	      pim_macro_assert_tracking_desired_eval(ch) ? "yes" : "no",
	      VTY_NEWLINE);
    } /* scan interface channels */
  } /* scan interfaces */
}

static void pim_show_assert_metric(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  
  vty_out(vty,
	  "Interface Address         Source          Group           RPT Pref Metric Address        %s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *ch_node;
    struct pim_ifchannel *ch;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) {
      char ch_src_str[100];
      char ch_grp_str[100];
      char addr_str[100];
      struct pim_assert_metric am;

      am = pim_macro_spt_assert_metric(&ch->upstream->rpf, pim_ifp->primary_address);

      pim_inet4_dump("<ch_src?>", ch->source_addr,
		     ch_src_str, sizeof(ch_src_str));
      pim_inet4_dump("<ch_grp?>", ch->group_addr,
		     ch_grp_str, sizeof(ch_grp_str));
      pim_inet4_dump("<addr?>", am.ip_address,
		     addr_str, sizeof(addr_str));

      vty_out(vty, "%-9s %-15s %-15s %-15s %-3s %4u %6u %-15s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      ch_src_str,
	      ch_grp_str,
	      am.rpt_bit_flag ? "yes" : "no",
	      am.metric_preference,
	      am.route_metric,
	      addr_str,
	      VTY_NEWLINE);
    } /* scan interface channels */
  } /* scan interfaces */
}

static void pim_show_assert_winner_metric(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  
  vty_out(vty,
	  "Interface Address         Source          Group           RPT Pref Metric Address        %s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *ch_node;
    struct pim_ifchannel *ch;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) {
      char ch_src_str[100];
      char ch_grp_str[100];
      char addr_str[100];
      struct pim_assert_metric *am;
      char pref_str[5];
      char metr_str[7];

      am = &ch->ifassert_winner_metric;

      pim_inet4_dump("<ch_src?>", ch->source_addr,
		     ch_src_str, sizeof(ch_src_str));
      pim_inet4_dump("<ch_grp?>", ch->group_addr,
		     ch_grp_str, sizeof(ch_grp_str));
      pim_inet4_dump("<addr?>", am->ip_address,
		     addr_str, sizeof(addr_str));

      if (am->metric_preference == PIM_ASSERT_METRIC_PREFERENCE_MAX)
	snprintf(pref_str, sizeof(pref_str), "INFI");
      else
	snprintf(pref_str, sizeof(pref_str), "%4u", am->metric_preference);

      if (am->route_metric == PIM_ASSERT_ROUTE_METRIC_MAX)
	snprintf(metr_str, sizeof(metr_str), "INFI");
      else
	snprintf(metr_str, sizeof(metr_str), "%6u", am->route_metric);

      vty_out(vty, "%-9s %-15s %-15s %-15s %-3s %-4s %-6s %-15s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      ch_src_str,
	      ch_grp_str,
	      am->rpt_bit_flag ? "yes" : "no",
	      pref_str,
	      metr_str,
	      addr_str,
	      VTY_NEWLINE);
    } /* scan interface channels */
  } /* scan interfaces */
}

static void pim_show_membership(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;

  vty_out(vty,
	  "Interface Address         Source          Group           Membership%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *ch_node;
    struct pim_ifchannel *ch;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) {
      char ch_src_str[100];
      char ch_grp_str[100];

      pim_inet4_dump("<ch_src?>", ch->source_addr,
		     ch_src_str, sizeof(ch_src_str));
      pim_inet4_dump("<ch_grp?>", ch->group_addr,
		     ch_grp_str, sizeof(ch_grp_str));

      vty_out(vty, "%-9s %-15s %-15s %-15s %-10s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      ch_src_str,
	      ch_grp_str,
	      ch->local_ifmembership == PIM_IFMEMBERSHIP_NOINFO ?
	      "NOINFO" : "INCLUDE",
	      VTY_NEWLINE);
    } /* scan interface channels */
  } /* scan interfaces */

}

static void igmp_show_interfaces(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();

  vty_out(vty,
	  "Interface Address         ifIndex Socket Uptime   Multi Broad MLoop AllMu Prmsc Del%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct listnode *sock_node;
    struct igmp_sock *igmp;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char uptime[10];
      int mloop;

      pim_time_uptime(uptime, sizeof(uptime), now - igmp->sock_creation);

      mloop = pim_socket_mcastloop_get(igmp->fd);
      
      vty_out(vty, "%-9s %-15s %7d %6d %8s %5s %5s %5s %5s %5s %3s%s",
	      ifp->name,
	      inet_ntoa(igmp->ifaddr),
	      ifp->ifindex,
	      igmp->fd,
	      uptime,
	      if_is_multicast(ifp) ? "yes" : "no",
	      if_is_broadcast(ifp) ? "yes" : "no",
	      (mloop < 0) ? "?" : (mloop ? "yes" : "no"),
	      (ifp->flags & IFF_ALLMULTI) ? "yes" : "no",
	      (ifp->flags & IFF_PROMISC) ? "yes" : "no",
	      PIM_IF_IS_DELETED(ifp) ? "yes" : "no",
	      VTY_NEWLINE);
    }
  }
}

static void show_interface_address(struct vty *vty)
{
  struct listnode  *ifpnode;
  struct interface *ifp;
  
  vty_out(vty,
	  "Interface Primary         Secondary      %s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifpnode, ifp)) {
    struct listnode  *ifcnode;
    struct connected *ifc;
    struct in_addr    pri_addr;
    char pri_addr_str[100];

    pri_addr = pim_find_primary_addr(ifp);

    pim_inet4_dump("<pri?>", pri_addr, pri_addr_str, sizeof(pri_addr_str));
    
    for (ALL_LIST_ELEMENTS_RO(ifp->connected, ifcnode, ifc)) {
      char sec_addr_str[100];
      struct prefix *p = ifc->address;

      if (p->family != AF_INET)
	continue;

      if (p->u.prefix4.s_addr == pri_addr.s_addr) {
	sec_addr_str[0] = '\0';
      }
      else {
	pim_inet4_dump("<sec?>", p->u.prefix4, sec_addr_str, sizeof(sec_addr_str));
      }
    
      vty_out(vty, "%-9s %-15s %-15s%s",
	      ifp->name,
	      pri_addr_str,
	      sec_addr_str,
	      VTY_NEWLINE);
    }
  }
}

static void pim_show_dr(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();

  vty_out(vty,
	  "NonPri: Number of neighbors missing DR Priority hello option%s%s",
	  VTY_NEWLINE, VTY_NEWLINE);
  
  vty_out(vty, "Interface Address         DR              Uptime   Elections NonPri%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    char dr_str[100];
    char dr_uptime[10];

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    pim_time_uptime(dr_uptime, sizeof(dr_uptime),
		    now - pim_ifp->pim_dr_election_last);

    pim_inet4_dump("<dr?>", pim_ifp->pim_dr_addr,
		   dr_str, sizeof(dr_str));

    vty_out(vty, "%-9s %-15s %-15s %8s %9d %6d%s",
	    ifp->name,
	    inet_ntoa(ifaddr),
	    dr_str,
	    dr_uptime,
	    pim_ifp->pim_dr_election_count,
	    pim_ifp->pim_dr_num_nondrpri_neighbors,
	    VTY_NEWLINE);
  }
}

static void pim_show_hello(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();
  
  vty_out(vty, "Interface Address         Period Timer StatStart Recv Rfail Send Sfail%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    char hello_period[10];
    char hello_timer[10];
    char stat_uptime[10];

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    pim_time_timer_to_mmss(hello_timer, sizeof(hello_timer), pim_ifp->t_pim_hello_timer);
    pim_time_mmss(hello_period, sizeof(hello_period), pim_ifp->pim_hello_period);
    pim_time_uptime(stat_uptime, sizeof(stat_uptime), now - pim_ifp->pim_ifstat_start);

    vty_out(vty, "%-9s %-15s %6s %5s %9s %4u %5u %4u %5u%s",
	    ifp->name,
	    inet_ntoa(ifaddr),
	    hello_period,
	    hello_timer,
	    stat_uptime,
	    pim_ifp->pim_ifstat_hello_recv,
	    pim_ifp->pim_ifstat_hello_recvfail,
	    pim_ifp->pim_ifstat_hello_sent,
	    pim_ifp->pim_ifstat_hello_sendfail,
	    VTY_NEWLINE);
  }
}

static void pim_show_interfaces(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();

  vty_out(vty, "Interface Address         ifIndex Socket Uptime   Multi Broad MLoop AllMu Prmsc Del%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    char uptime[10];
    int mloop;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    pim_time_uptime(uptime, sizeof(uptime), now - pim_ifp->pim_sock_creation);

    mloop = pim_socket_mcastloop_get(pim_ifp->pim_sock_fd);
      
    vty_out(vty, "%-9s %-15s %7d %6d %8s %5s %5s %5s %5s %5s %3s%s",
	    ifp->name,
	    inet_ntoa(ifaddr),
	    ifp->ifindex,
	    pim_ifp->pim_sock_fd,
	    uptime,
	    if_is_multicast(ifp) ? "yes" : "no",
	    if_is_broadcast(ifp) ? "yes" : "no",
	    (mloop < 0) ? "?" : (mloop ? "yes" : "no"),
	    (ifp->flags & IFF_ALLMULTI) ? "yes" : "no",
	    (ifp->flags & IFF_PROMISC) ? "yes" : "no",
	    PIM_IF_IS_DELETED(ifp) ? "yes" : "no",
	    VTY_NEWLINE);
  }
}

static void pim_show_join(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();

  vty_out(vty,
	  "Interface Address         Source          Group           State  Uptime   Expire Prune%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *ch_node;
    struct pim_ifchannel *ch;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, ch_node, ch)) {
      char ch_src_str[100];
      char ch_grp_str[100];
      char uptime[10];
      char expire[10];
      char prune[10];

      pim_inet4_dump("<ch_src?>", ch->source_addr,
		     ch_src_str, sizeof(ch_src_str));
      pim_inet4_dump("<ch_grp?>", ch->group_addr,
		     ch_grp_str, sizeof(ch_grp_str));

      pim_time_uptime(uptime, sizeof(uptime), now - ch->ifjoin_creation);
      pim_time_timer_to_mmss(expire, sizeof(expire),
			     ch->t_ifjoin_expiry_timer);
      pim_time_timer_to_mmss(prune, sizeof(prune),
			     ch->t_ifjoin_prune_pending_timer);

      vty_out(vty, "%-9s %-15s %-15s %-15s %-6s %8s %-6s %5s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      ch_src_str,
	      ch_grp_str,
	      pim_ifchannel_ifjoin_name(ch->ifjoin_state),
	      uptime,
	      expire,
	      prune,
	      VTY_NEWLINE);
    } /* scan interface channels */
  } /* scan interfaces */

}

static void pim_show_neighbors(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;
  time_t            now;
  
  now = pim_time_monotonic_sec();

  vty_out(vty,
	  "Recv flags: H=holdtime L=lan_prune_delay P=dr_priority G=generation_id A=address_list%s"
	  "            T=can_disable_join_suppression%s%s",
	  VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);

  vty_out(vty, "Interface Address         Neighbor        Uptime   Timer Holdt DrPri GenId    Recv  %s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *neighnode;
    struct pim_neighbor *neigh;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, neigh)) {
      char uptime[10];
      char holdtime[10];
      char expire[10];
      char neigh_src_str[100];
      char recv[7];

      pim_inet4_dump("<src?>", neigh->source_addr,
		     neigh_src_str, sizeof(neigh_src_str));
      pim_time_uptime(uptime, sizeof(uptime), now - neigh->creation);
      pim_time_mmss(holdtime, sizeof(holdtime), neigh->holdtime);
      pim_time_timer_to_mmss(expire, sizeof(expire), neigh->t_expire_timer);

      recv[0] = PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_HOLDTIME)                     ? 'H' : ' ';
      recv[1] = PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_LAN_PRUNE_DELAY)              ? 'L' : ' ';
      recv[2] = PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_DR_PRIORITY)                  ? 'P' : ' ';
      recv[3] = PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_GENERATION_ID)                ? 'G' : ' ';
      recv[4] = PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_ADDRESS_LIST)                 ? 'A' : ' ';
      recv[5] = PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION) ? 'T' : ' ';
      recv[6] = '\0';

      vty_out(vty, "%-9s %-15s %-15s %8s %5s %5s %5u %08x %6s%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      neigh_src_str,
	      uptime,
	      expire,
	      holdtime,
	      neigh->dr_priority,
	      neigh->generation_id,
	      recv,
	      VTY_NEWLINE);
    }


  }
}

static void pim_show_lan_prune_delay(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;

  vty_out(vty,
	  "PrDly=propagation_delay (msec)           OvInt=override_interval (msec)%s"
	  "HiDly=highest_propagation_delay (msec)   HiInt=highest_override_interval (msec)%s"
	  "NoDly=number_of_non_lan_delay_neighbors%s"
	  "T=t_bit LPD=lan_prune_delay_hello_option%s%s",
	  VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);

  vty_out(vty, "Interface Address         PrDly OvInt NoDly HiDly HiInt T Neighbor        LPD PrDly OvInt T%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *neighnode;
    struct pim_neighbor *neigh;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, neigh)) {
      char neigh_src_str[100];

      pim_inet4_dump("<src?>", neigh->source_addr,
		     neigh_src_str, sizeof(neigh_src_str));

      vty_out(vty, "%-9s %-15s %5u %5u %5u %5u %5u %1u %-15s %-3s %5u %5u %1u%s",
	      ifp->name,
	      inet_ntoa(ifaddr),
	      pim_ifp->pim_propagation_delay_msec,
	      pim_ifp->pim_override_interval_msec,
	      pim_ifp->pim_number_of_nonlandelay_neighbors,
	      pim_ifp->pim_neighbors_highest_propagation_delay_msec,
	      pim_ifp->pim_neighbors_highest_override_interval_msec,
	      PIM_FORCE_BOOLEAN(PIM_IF_TEST_PIM_CAN_DISABLE_JOIN_SUPRESSION(pim_ifp->options)),
	      neigh_src_str,
	      PIM_OPTION_IS_SET(neigh->hello_options, PIM_OPTION_MASK_LAN_PRUNE_DELAY) ? "yes" : "no",
	      neigh->propagation_delay_msec,
	      neigh->override_interval_msec,
	      PIM_FORCE_BOOLEAN(PIM_OPTION_IS_SET(neigh->hello_options,
						  PIM_OPTION_MASK_CAN_DISABLE_JOIN_SUPPRESSION)),
	      VTY_NEWLINE);
    }

  }
}

static void pim_show_jp_override_interval(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;

  vty_out(vty,
	  "EffPDelay=effective_propagation_delay (msec)%s"
	  "EffOvrInt=override_interval (msec)%s"
	  "JPOvrInt=jp_override_interval (msec)%s%s",
	  VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);

  vty_out(vty, "Interface Address         LAN_Delay EffPDelay EffOvrInt JPOvrInt%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    vty_out(vty, "%-9s %-15s %-9s %9u %9u %8u%s",
	    ifp->name,
	    inet_ntoa(ifaddr),
	    pim_if_lan_delay_enabled(ifp) ? "enabled" : "disabled",
	    pim_if_effective_propagation_delay_msec(ifp),
	    pim_if_effective_override_interval_msec(ifp),
	    pim_if_jp_override_interval_msec(ifp),
	    VTY_NEWLINE);
  }
}

static void pim_show_neighbors_secondary(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;

  vty_out(vty, "Interface Address         Neighbor        Secondary      %s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct listnode *neighnode;
    struct pim_neighbor *neigh;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    if (pim_ifp->pim_sock_fd < 0)
      continue;

    ifaddr = pim_ifp->primary_address;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_neighbor_list, neighnode, neigh)) {
      char neigh_src_str[100];
      struct listnode *prefix_node;
      struct prefix *p;

      if (!neigh->prefix_list)
	continue;

      pim_inet4_dump("<src?>", neigh->source_addr,
		     neigh_src_str, sizeof(neigh_src_str));

      for (ALL_LIST_ELEMENTS_RO(neigh->prefix_list, prefix_node, p)) {
	char neigh_sec_str[100];

	if (p->family != AF_INET)
	  continue;

	pim_inet4_dump("<src?>", p->u.prefix4,
		       neigh_sec_str, sizeof(neigh_sec_str));

	vty_out(vty, "%-9s %-15s %-15s %-15s%s",
		ifp->name,
		inet_ntoa(ifaddr),
		neigh_src_str,
		neigh_sec_str,
		VTY_NEWLINE);
      }
    }
  }
}

static void pim_show_upstream(struct vty *vty)
{
  struct listnode     *upnode;
  struct pim_upstream *up;
  time_t               now;

  now = pim_time_monotonic_sec();

  vty_out(vty, "Source          Group           State Uptime   JoinTimer RefCnt%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(qpim_upstream_list, upnode, up)) {
      char src_str[100];
      char grp_str[100];
      char uptime[10];
      char join_timer[10];

      pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
      pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
      pim_time_uptime(uptime, sizeof(uptime), now - up->state_transition);
      pim_time_timer_to_hhmmss(join_timer, sizeof(join_timer), up->t_join_timer);

      vty_out(vty, "%-15s %-15s %-5s %-8s %-9s %6d%s",
	      src_str,
	      grp_str,
	      up->join_state == PIM_UPSTREAM_JOINED ? "Jnd" : "NtJnd",
	      uptime,
	      join_timer,
	      up->ref_count,
	      VTY_NEWLINE);
  }
}

static void pim_show_join_desired(struct vty *vty)
{
  struct listnode      *ifnode;
  struct listnode      *chnode;
  struct interface     *ifp;
  struct pim_interface *pim_ifp;
  struct pim_ifchannel *ch;
  struct in_addr        me_ifaddr;
  char src_str[100];
  char grp_str[100];

  vty_out(vty,
	  "Interface Source          Group           LostAssert Joins PimInclude JoinDesired EvalJD%s",
	  VTY_NEWLINE);

  /* scan all interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    pim_ifp = ifp->info;
    if (!pim_ifp)
      continue;

    me_ifaddr = pim_ifp->primary_address;

    /* scan per-interface (S,G) state */
    for (ALL_LIST_ELEMENTS_RO(pim_ifp->pim_ifchannel_list, chnode, ch)) {
      struct pim_upstream *up = ch->upstream;

      pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
      pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));

      vty_out(vty, "%-9s %-15s %-15s %-10s %-5s %-10s %-11s %-6s%s",
	      ifp->name,
	      src_str,
	      grp_str,
	      pim_macro_ch_lost_assert(ch) ? "yes" : "no",
	      pim_macro_chisin_joins(ch) ? "yes" : "no",
	      pim_macro_chisin_pim_include(ch) ? "yes" : "no",
	      PIM_UPSTREAM_FLAG_TEST_DR_JOIN_DESIRED(up->flags) ? "yes" : "no",
	      pim_upstream_evaluate_join_desired(up) ? "yes" : "no",
	      VTY_NEWLINE);
    }
  }
}

static void pim_show_upstream_rpf(struct vty *vty)
{
  struct listnode     *upnode;
  struct pim_upstream *up;

  vty_out(vty,
	  "Source          Group           RpfIface RibNextHop      RpfAddress     %s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(qpim_upstream_list, upnode, up)) {
    char src_str[100];
    char grp_str[100];
    char rpf_nexthop_str[100];
    char rpf_addr_str[100];
    struct pim_rpf *rpf;
    const char *rpf_ifname;
    
    rpf = &up->rpf;
    
    pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
    pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
    pim_inet4_dump("<nexthop?>", rpf->source_nexthop.mrib_nexthop_addr, rpf_nexthop_str, sizeof(rpf_nexthop_str));
    pim_inet4_dump("<rpf?>", rpf->rpf_addr, rpf_addr_str, sizeof(rpf_addr_str));
    
    rpf_ifname = rpf->source_nexthop.interface ? rpf->source_nexthop.interface->name : "<ifname?>";
    
    vty_out(vty, "%-15s %-15s %-8s %-15s %-15s%s",
	    src_str,
	    grp_str,
	    rpf_ifname,
	    rpf_nexthop_str,
	    rpf_addr_str,
	    VTY_NEWLINE);
  }
}

static void show_rpf_refresh_stats(struct vty *vty, time_t now)
{
  char refresh_uptime[10];

  pim_time_uptime(refresh_uptime, sizeof(refresh_uptime), now - qpim_rpf_cache_refresh_last);

  vty_out(vty, 
	  "RPF Cache Refresh Delay:    %ld msecs%s"
	  "RPF Cache Refresh Timer:    %ld msecs%s"
	  "RPF Cache Refresh Requests: %lld%s"
	  "RPF Cache Refresh Events:   %lld%s"
	  "RPF Cache Refresh Last:     %s%s",
	  qpim_rpf_cache_refresh_delay_msec, VTY_NEWLINE,
	  pim_time_timer_remain_msec(qpim_rpf_cache_refresher), VTY_NEWLINE,
	  qpim_rpf_cache_refresh_requests, VTY_NEWLINE,
	  qpim_rpf_cache_refresh_events, VTY_NEWLINE,
	  refresh_uptime, VTY_NEWLINE);
}

static void pim_show_rpf(struct vty *vty)
{
  struct listnode     *up_node;
  struct pim_upstream *up;
  time_t               now = pim_time_monotonic_sec();

  show_rpf_refresh_stats(vty, now);

  vty_out(vty, "%s", VTY_NEWLINE);

  vty_out(vty,
	  "Source          Group           RpfIface RpfAddress      RibNextHop      Metric Pref%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(qpim_upstream_list, up_node, up)) {
    char src_str[100];
    char grp_str[100];
    char rpf_addr_str[100];
    char rib_nexthop_str[100];
    const char *rpf_ifname;
    struct pim_rpf  *rpf = &up->rpf;
    
    pim_inet4_dump("<src?>", up->source_addr, src_str, sizeof(src_str));
    pim_inet4_dump("<grp?>", up->group_addr, grp_str, sizeof(grp_str));
    pim_inet4_dump("<rpf?>", rpf->rpf_addr, rpf_addr_str, sizeof(rpf_addr_str));
    pim_inet4_dump("<nexthop?>", rpf->source_nexthop.mrib_nexthop_addr, rib_nexthop_str, sizeof(rib_nexthop_str));
    
    rpf_ifname = rpf->source_nexthop.interface ? rpf->source_nexthop.interface->name : "<ifname?>";
    
    vty_out(vty, "%-15s %-15s %-8s %-15s %-15s %6d %4d%s",
	    src_str,
	    grp_str,
	    rpf_ifname,
	    rpf_addr_str,
	    rib_nexthop_str,
	    rpf->source_nexthop.mrib_route_metric,
	    rpf->source_nexthop.mrib_metric_preference,
	    VTY_NEWLINE);
  }
}

static void igmp_show_querier(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;

  vty_out(vty, "Interface Address         Querier StartCount Query-Timer Other-Timer%s", VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp = ifp->info;
    struct listnode  *sock_node;
    struct igmp_sock *igmp;
    
    if (!pim_ifp)
      continue;

    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char query_hhmmss[10];
      char other_hhmmss[10];

      pim_time_timer_to_hhmmss(query_hhmmss, sizeof(query_hhmmss), igmp->t_igmp_query_timer);
      pim_time_timer_to_hhmmss(other_hhmmss, sizeof(other_hhmmss), igmp->t_other_querier_timer);

      vty_out(vty, "%-9s %-15s %-7s %10d %11s %11s%s",
	      ifp->name,
	      inet_ntoa(igmp->ifaddr),
	      igmp->t_igmp_query_timer ? "THIS" : "OTHER",
	      igmp->startup_query_count,
	      query_hhmmss,
	      other_hhmmss,
	      VTY_NEWLINE);
    }
  }
}

static void igmp_show_groups(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  time_t            now;

  now = pim_time_monotonic_sec();

  vty_out(vty, "Interface Address         Group           Mode Timer    Srcs V Uptime  %s", VTY_NEWLINE);

  /* scan interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp = ifp->info;
    struct listnode  *sock_node;
    struct igmp_sock *igmp;
    
    if (!pim_ifp)
      continue;
    
    /* scan igmp sockets */
    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char ifaddr_str[100];
      struct listnode *grpnode;
      struct igmp_group *grp;

      pim_inet4_dump("<ifaddr?>", igmp->ifaddr, ifaddr_str, sizeof(ifaddr_str));

      /* scan igmp groups */
      for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, grpnode, grp)) {
	char group_str[100];
	char hhmmss[10];
	char uptime[10];

	pim_inet4_dump("<group?>", grp->group_addr, group_str, sizeof(group_str));
	pim_time_timer_to_hhmmss(hhmmss, sizeof(hhmmss), grp->t_group_timer);
	pim_time_uptime(uptime, sizeof(uptime), now - grp->group_creation);

	vty_out(vty, "%-9s %-15s %-15s %4s %8s %4d %d %8s%s",
		ifp->name,
		ifaddr_str,
		group_str,
		grp->group_filtermode_isexcl ? "EXCL" : "INCL",
		hhmmss,
		grp->group_source_list ? listcount(grp->group_source_list) : 0,
		igmp_group_compat_mode(igmp, grp),
		uptime,
		VTY_NEWLINE);

      } /* scan igmp groups */
    } /* scan igmp sockets */
  } /* scan interfaces */
}

static void igmp_show_group_retransmission(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  time_t            now;

  now = pim_time_monotonic_sec();

  vty_out(vty, "Interface Address         Group           RetTimer Counter RetSrcs%s", VTY_NEWLINE);

  /* scan interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp = ifp->info;
    struct listnode  *sock_node;
    struct igmp_sock *igmp;
    
    if (!pim_ifp)
      continue;
    
    /* scan igmp sockets */
    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char ifaddr_str[100];
      struct listnode *grpnode;
      struct igmp_group *grp;

      pim_inet4_dump("<ifaddr?>", igmp->ifaddr, ifaddr_str, sizeof(ifaddr_str));

      /* scan igmp groups */
      for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, grpnode, grp)) {
	char group_str[100];
	char grp_retr_mmss[10];
	struct listnode    *src_node;
	struct igmp_source *src;
	int grp_retr_sources = 0;

	pim_inet4_dump("<group?>", grp->group_addr, group_str, sizeof(group_str));
	pim_time_timer_to_mmss(grp_retr_mmss, sizeof(grp_retr_mmss), grp->t_group_query_retransmit_timer);


	/* count group sources with retransmission state */
	for (ALL_LIST_ELEMENTS_RO(grp->group_source_list, src_node, src)) {
	  if (src->source_query_retransmit_count > 0) {
	    ++grp_retr_sources;
	  }
	}

	vty_out(vty, "%-9s %-15s %-15s %-8s %7d %7d%s",
		ifp->name,
		ifaddr_str,
		group_str,
		grp_retr_mmss,
		grp->group_specific_query_retransmit_count,
		grp_retr_sources,
		VTY_NEWLINE);

      } /* scan igmp groups */
    } /* scan igmp sockets */
  } /* scan interfaces */
}

static void igmp_show_parameters(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;

  vty_out(vty,
	  "QRV: Robustness Variable             SQI: Startup Query Interval%s"
	  "QQI: Query Interval                  OQPI: Other Querier Present Interval%s"
	  "QRI: Query Response Interval         LMQT: Last Member Query Time%s"
	  "GMI: Group Membership Interval       OHPI: Older Host Present Interval%s%s",
	  VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE, VTY_NEWLINE);

  vty_out(vty,
	  "Interface Address         QRV QQI QRI   GMI   SQI OQPI  LMQT  OHPI %s",
	  VTY_NEWLINE);

  /* scan interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp = ifp->info;
    struct listnode  *sock_node;
    struct igmp_sock *igmp;
    
    if (!pim_ifp)
      continue;
    
    /* scan igmp sockets */
    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char ifaddr_str[100];
      long gmi_dsec;  /* Group Membership Interval */
      long oqpi_dsec; /* Other Querier Present Interval */
      int  sqi;
      long lmqt_dsec;
      long ohpi_dsec;
      long qri_dsec;

      pim_inet4_dump("<ifaddr?>", igmp->ifaddr, ifaddr_str, sizeof(ifaddr_str));

      gmi_dsec = PIM_IGMP_GMI_MSEC(igmp->querier_robustness_variable,
				   igmp->querier_query_interval,
				   pim_ifp->igmp_query_max_response_time_dsec) / 100;

      sqi = PIM_IGMP_SQI(pim_ifp->igmp_default_query_interval);

      oqpi_dsec = PIM_IGMP_OQPI_MSEC(igmp->querier_robustness_variable,
				     igmp->querier_query_interval,
				     pim_ifp->igmp_query_max_response_time_dsec) / 100;

      lmqt_dsec = PIM_IGMP_LMQT_MSEC(pim_ifp->igmp_query_max_response_time_dsec,
				     igmp->querier_robustness_variable) / 100;

      ohpi_dsec = PIM_IGMP_OHPI_DSEC(igmp->querier_robustness_variable,
				     igmp->querier_query_interval,
				     pim_ifp->igmp_query_max_response_time_dsec);

      qri_dsec = pim_ifp->igmp_query_max_response_time_dsec;

      vty_out(vty,
	      "%-9s %-15s %3d %3d %3ld.%ld %3ld.%ld %3d %3ld.%ld %3ld.%ld %3ld.%ld%s",
	      ifp->name,
	      ifaddr_str,
	      igmp->querier_robustness_variable,
	      igmp->querier_query_interval,
	      qri_dsec / 10, qri_dsec % 10,
	      gmi_dsec / 10, gmi_dsec % 10,
	      sqi,
	      oqpi_dsec / 10, oqpi_dsec % 10,
	      lmqt_dsec / 10, lmqt_dsec % 10,
	      ohpi_dsec / 10, ohpi_dsec % 10,
	      VTY_NEWLINE);

    } /* scan igmp sockets */
  } /* scan interfaces */
}

static void igmp_show_sources(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  time_t            now;

  now = pim_time_monotonic_sec();

  vty_out(vty, "Interface Address         Group           Source          Timer Fwd Uptime  %s", VTY_NEWLINE);

  /* scan interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp = ifp->info;
    struct listnode  *sock_node;
    struct igmp_sock *igmp;
    
    if (!pim_ifp)
      continue;
    
    /* scan igmp sockets */
    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char ifaddr_str[100];
      struct listnode   *grpnode;
      struct igmp_group *grp;

      pim_inet4_dump("<ifaddr?>", igmp->ifaddr, ifaddr_str, sizeof(ifaddr_str));

      /* scan igmp groups */
      for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, grpnode, grp)) {
	char group_str[100];
	struct listnode    *srcnode;
	struct igmp_source *src;

	pim_inet4_dump("<group?>", grp->group_addr, group_str, sizeof(group_str));
	
	/* scan group sources */
	for (ALL_LIST_ELEMENTS_RO(grp->group_source_list, srcnode, src)) {
	  char source_str[100];
	  char mmss[10];
	  char uptime[10];

	  pim_inet4_dump("<source?>", src->source_addr, source_str, sizeof(source_str));

	  pim_time_timer_to_mmss(mmss, sizeof(mmss), src->t_source_timer);

	  pim_time_uptime(uptime, sizeof(uptime), now - src->source_creation);

	  vty_out(vty, "%-9s %-15s %-15s %-15s %5s %3s %8s%s",
		  ifp->name,
		  ifaddr_str,
		  group_str,
		  source_str,
		  mmss,
		  IGMP_SOURCE_TEST_FORWARDING(src->source_flags) ? "Y" : "N",
		  uptime,
		  VTY_NEWLINE);
	  
	} /* scan group sources */
      } /* scan igmp groups */
    } /* scan igmp sockets */
  } /* scan interfaces */
}

static void igmp_show_source_retransmission(struct vty *vty)
{
  struct listnode  *ifnode;
  struct interface *ifp;
  time_t            now;

  now = pim_time_monotonic_sec();

  vty_out(vty, "Interface Address         Group           Source          Counter%s", VTY_NEWLINE);

  /* scan interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp = ifp->info;
    struct listnode  *sock_node;
    struct igmp_sock *igmp;
    
    if (!pim_ifp)
      continue;
    
    /* scan igmp sockets */
    for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
      char ifaddr_str[100];
      struct listnode   *grpnode;
      struct igmp_group *grp;

      pim_inet4_dump("<ifaddr?>", igmp->ifaddr, ifaddr_str, sizeof(ifaddr_str));

      /* scan igmp groups */
      for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, grpnode, grp)) {
	char group_str[100];
	struct listnode    *srcnode;
	struct igmp_source *src;

	pim_inet4_dump("<group?>", grp->group_addr, group_str, sizeof(group_str));
	
	/* scan group sources */
	for (ALL_LIST_ELEMENTS_RO(grp->group_source_list, srcnode, src)) {
	  char source_str[100];

	  pim_inet4_dump("<source?>", src->source_addr, source_str, sizeof(source_str));

	  vty_out(vty, "%-9s %-15s %-15s %-15s %7d%s",
		  ifp->name,
		  ifaddr_str,
		  group_str,
		  source_str,
		  src->source_query_retransmit_count,
		  VTY_NEWLINE);
	  
	} /* scan group sources */
      } /* scan igmp groups */
    } /* scan igmp sockets */
  } /* scan interfaces */
}

static void clear_igmp_interfaces()
{
  struct listnode  *ifnode;
  struct listnode  *ifnextnode;
  struct interface *ifp;

  for (ALL_LIST_ELEMENTS(iflist, ifnode, ifnextnode, ifp)) {
    pim_if_addr_del_all_igmp(ifp);
  }

  for (ALL_LIST_ELEMENTS(iflist, ifnode, ifnextnode, ifp)) {
    pim_if_addr_add_all(ifp);
  }
}

static void clear_pim_interfaces()
{
  struct listnode  *ifnode;
  struct listnode  *ifnextnode;
  struct interface *ifp;

  for (ALL_LIST_ELEMENTS(iflist, ifnode, ifnextnode, ifp)) {
    if (ifp->info) {
      pim_neighbor_delete_all(ifp, "interface cleared");
    }
  }
}

static void clear_interfaces()
{
  clear_igmp_interfaces();
  clear_pim_interfaces();
}

DEFUN (pim_interface,
       pim_interface_cmd,
       "interface IFNAME",
       "Select an interface to configure\n"
       "Interface's name\n")
{
  struct interface *ifp;
  const char *ifname = argv[0];
  size_t sl;

  sl = strlen(ifname);
  if (sl > INTERFACE_NAMSIZ) {
    vty_out(vty, "%% Interface name %s is invalid: length exceeds "
	    "%d characters%s",
	    ifname, INTERFACE_NAMSIZ, VTY_NEWLINE);
    return CMD_WARNING;
  }

  ifp = if_lookup_by_name_len(ifname, sl);
  if (!ifp) {
    vty_out(vty, "%% Interface %s does not exist%s", ifname, VTY_NEWLINE);

    /* Returning here would prevent pimd from booting when there are
       interface commands in pimd.conf, since all interfaces are
       unknown at pimd boot time (the zebra daemon has not been
       contacted for interface discovery). */
    
    ifp = if_get_by_name_len(ifname, sl);
    if (!ifp) {
      vty_out(vty, "%% Could not create interface %s%s", ifname, VTY_NEWLINE);
      return CMD_WARNING;
    }
  }

  vty->index = ifp;
  vty->node = INTERFACE_NODE;

  return CMD_SUCCESS;
}

DEFUN (clear_ip_interfaces,
       clear_ip_interfaces_cmd,
       "clear ip interfaces",
       CLEAR_STR
       IP_STR
       "Reset interfaces\n")
{
  clear_interfaces();

  return CMD_SUCCESS;
}

DEFUN (clear_ip_igmp_interfaces,
       clear_ip_igmp_interfaces_cmd,
       "clear ip igmp interfaces",
       CLEAR_STR
       IP_STR
       CLEAR_IP_IGMP_STR
       "Reset IGMP interfaces\n")
{
  clear_igmp_interfaces();

  return CMD_SUCCESS;
}

DEFUN (clear_ip_pim_interfaces,
       clear_ip_pim_interfaces_cmd,
       "clear ip pim interfaces",
       CLEAR_STR
       IP_STR
       CLEAR_IP_PIM_STR
       "Reset PIM interfaces\n")
{
  clear_pim_interfaces();

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_interface,
       show_ip_igmp_interface_cmd,
       "show ip igmp interface",
       SHOW_STR
       IP_STR
       IGMP_STR
       "IGMP interface information\n")
{
  igmp_show_interfaces(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_groups,
       show_ip_igmp_groups_cmd,
       "show ip igmp groups",
       SHOW_STR
       IP_STR
       IGMP_STR
       IGMP_GROUP_STR)
{
  igmp_show_groups(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_groups_retransmissions,
       show_ip_igmp_groups_retransmissions_cmd,
       "show ip igmp groups retransmissions",
       SHOW_STR
       IP_STR
       IGMP_STR
       IGMP_GROUP_STR
       "IGMP group retransmissions\n")
{
  igmp_show_group_retransmission(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_parameters,
       show_ip_igmp_parameters_cmd,
       "show ip igmp parameters",
       SHOW_STR
       IP_STR
       IGMP_STR
       "IGMP parameters information\n")
{
  igmp_show_parameters(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_sources,
       show_ip_igmp_sources_cmd,
       "show ip igmp sources",
       SHOW_STR
       IP_STR
       IGMP_STR
       IGMP_SOURCE_STR)
{
  igmp_show_sources(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_sources_retransmissions,
       show_ip_igmp_sources_retransmissions_cmd,
       "show ip igmp sources retransmissions",
       SHOW_STR
       IP_STR
       IGMP_STR
       IGMP_SOURCE_STR
       "IGMP source retransmissions\n")
{
  igmp_show_source_retransmission(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_igmp_querier,
       show_ip_igmp_querier_cmd,
       "show ip igmp querier",
       SHOW_STR
       IP_STR
       IGMP_STR
       "IGMP querier information\n")
{
  igmp_show_querier(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_address,
       show_ip_pim_address_cmd,
       "show ip pim address",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface address\n")
{
  show_interface_address(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_assert,
       show_ip_pim_assert_cmd,
       "show ip pim assert",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface assert\n")
{
  pim_show_assert(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_assert_internal,
       show_ip_pim_assert_internal_cmd,
       "show ip pim assert-internal",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface internal assert state\n")
{
  pim_show_assert_internal(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_assert_metric,
       show_ip_pim_assert_metric_cmd,
       "show ip pim assert-metric",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface assert metric\n")
{
  pim_show_assert_metric(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_assert_winner_metric,
       show_ip_pim_assert_winner_metric_cmd,
       "show ip pim assert-winner-metric",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface assert winner metric\n")
{
  pim_show_assert_winner_metric(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_dr,
       show_ip_pim_dr_cmd,
       "show ip pim designated-router",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface designated router\n")
{
  pim_show_dr(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_hello,
       show_ip_pim_hello_cmd,
       "show ip pim hello",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface hello information\n")
{
  pim_show_hello(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_interface,
       show_ip_pim_interface_cmd,
       "show ip pim interface",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface information\n")
{
  pim_show_interfaces(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_join,
       show_ip_pim_join_cmd,
       "show ip pim join",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface join information\n")
{
  pim_show_join(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_lan_prune_delay,
       show_ip_pim_lan_prune_delay_cmd,
       "show ip pim lan-prune-delay",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM neighbors LAN prune delay parameters\n")
{
  pim_show_lan_prune_delay(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_local_membership,
       show_ip_pim_local_membership_cmd,
       "show ip pim local-membership",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface local-membership\n")
{
  pim_show_membership(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_jp_override_interval,
       show_ip_pim_jp_override_interval_cmd,
       "show ip pim jp-override-interval",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM interface J/P override interval\n")
{
  pim_show_jp_override_interval(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_neighbor,
       show_ip_pim_neighbor_cmd,
       "show ip pim neighbor",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM neighbor information\n")
{
  pim_show_neighbors(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_secondary,
       show_ip_pim_secondary_cmd,
       "show ip pim secondary",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM neighbor addresses\n")
{
  pim_show_neighbors_secondary(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_upstream,
       show_ip_pim_upstream_cmd,
       "show ip pim upstream",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM upstream information\n")
{
  pim_show_upstream(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_upstream_join_desired,
       show_ip_pim_upstream_join_desired_cmd,
       "show ip pim upstream-join-desired",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM upstream join-desired\n")
{
  pim_show_join_desired(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_upstream_rpf,
       show_ip_pim_upstream_rpf_cmd,
       "show ip pim upstream-rpf",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM upstream source rpf\n")
{
  pim_show_upstream_rpf(vty);

  return CMD_SUCCESS;
}

DEFUN (show_ip_pim_rpf,
       show_ip_pim_rpf_cmd,
       "show ip pim rpf",
       SHOW_STR
       IP_STR
       PIM_STR
       "PIM cached source rpf information\n")
{
  pim_show_rpf(vty);

  return CMD_SUCCESS;
}

static void show_multicast_interfaces(struct vty *vty)
{
  struct listnode  *node;
  struct interface *ifp;

  vty_out(vty, "%s", VTY_NEWLINE);
  
  vty_out(vty, "Interface Address         ifi Vif  PktsIn PktsOut    BytesIn   BytesOut%s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(iflist, node, ifp)) {
    struct pim_interface *pim_ifp;
    struct in_addr ifaddr;
    struct sioc_vif_req vreq;

    pim_ifp = ifp->info;
    
    if (!pim_ifp)
      continue;

    memset(&vreq, 0, sizeof(vreq));
    vreq.vifi = pim_ifp->mroute_vif_index;

    if (ioctl(qpim_mroute_socket_fd, SIOCGETVIFCNT, &vreq)) {
      int e = errno;
      vty_out(vty,
	      "ioctl(SIOCGETVIFCNT=%d) failure for interface %s vif_index=%d: errno=%d: %s%s",
	      SIOCGETVIFCNT,
	      ifp->name,
	      pim_ifp->mroute_vif_index,
	      e,
	      safe_strerror(e),
	      VTY_NEWLINE);	      
      continue;
    }

    ifaddr = pim_ifp->primary_address;

    vty_out(vty, "%-9s %-15s %3d %3d %7lu %7lu %10lu %10lu%s",
	    ifp->name,
	    inet_ntoa(ifaddr),
	    ifp->ifindex,
	    pim_ifp->mroute_vif_index,
	    vreq.icount,
	    vreq.ocount,
	    vreq.ibytes,
	    vreq.obytes,
	    VTY_NEWLINE);
  }
}

DEFUN (show_ip_multicast,
       show_ip_multicast_cmd,
       "show ip multicast",
       SHOW_STR
       IP_STR
       "Multicast global information\n")
{
  time_t now = pim_time_monotonic_sec();

  if (PIM_MROUTE_IS_ENABLED) {
    char uptime[10];

    vty_out(vty, "Mroute socket descriptor: %d%s",
	    qpim_mroute_socket_fd,
	    VTY_NEWLINE);

    pim_time_uptime(uptime, sizeof(uptime), now - qpim_mroute_socket_creation);
    vty_out(vty, "Mroute socket uptime: %s%s",
	    uptime,
	    VTY_NEWLINE);
  }
  else {
    vty_out(vty, "Multicast disabled%s",
	    VTY_NEWLINE);
  }

  vty_out(vty, "%s", VTY_NEWLINE);
  vty_out(vty, "Current highest VifIndex: %d%s",
	  qpim_mroute_oif_highest_vif_index,
	  VTY_NEWLINE);
  vty_out(vty, "Maximum highest VifIndex: %d%s",
	  MAXVIFS - 1,
	  VTY_NEWLINE);

  vty_out(vty, "%s", VTY_NEWLINE);
  vty_out(vty, "Upstream Join Timer: %d secs%s",
	  qpim_t_periodic,
	  VTY_NEWLINE);
  vty_out(vty, "Join/Prune Holdtime: %d secs%s",
	  PIM_JP_HOLDTIME,
	  VTY_NEWLINE);

  vty_out(vty, "%s", VTY_NEWLINE);

  show_rpf_refresh_stats(vty, now);

  show_multicast_interfaces(vty);
  
  return CMD_SUCCESS;
}

static void show_mroute(struct vty *vty)
{
  struct listnode    *node;
  struct channel_oil *c_oil;
  time_t              now;

  vty_out(vty, "Proto: I=IGMP P=PIM%s%s", VTY_NEWLINE, VTY_NEWLINE);
  
  vty_out(vty, "Source          Group           Proto Input iVifI Output oVifI TTL Uptime  %s",
	  VTY_NEWLINE);

  now = pim_time_monotonic_sec();

  for (ALL_LIST_ELEMENTS_RO(qpim_channel_oil_list, node, c_oil)) {
    char group_str[100]; 
    char source_str[100];
    int oif_vif_index;

    pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, sizeof(group_str));
    pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, sizeof(source_str));
    
    for (oif_vif_index = 0; oif_vif_index < MAXVIFS; ++oif_vif_index) {
      struct interface *ifp_in;
      struct interface *ifp_out;
      char oif_uptime[10];
      int ttl;
      char proto[5];

      ttl = c_oil->oil.mfcc_ttls[oif_vif_index];
      if (ttl < 1)
	continue;

      ifp_in  = pim_if_find_by_vif_index(c_oil->oil.mfcc_parent);
      ifp_out = pim_if_find_by_vif_index(oif_vif_index);

      pim_time_uptime(oif_uptime, sizeof(oif_uptime), now - c_oil->oif_creation[oif_vif_index]);

      proto[0] = '\0';
      if (c_oil->oif_flags[oif_vif_index] & PIM_OIF_FLAG_PROTO_PIM) {
	strcat(proto, "P");
      }
      if (c_oil->oif_flags[oif_vif_index] & PIM_OIF_FLAG_PROTO_IGMP) {
	strcat(proto, "I");
      }

      vty_out(vty, "%-15s %-15s %-5s %-5s %5d %-6s %5d %3d %8s %s",
	      source_str,
	      group_str,
	      proto,
	      ifp_in ? ifp_in->name : "<iif?>",
	      c_oil->oil.mfcc_parent,
	      ifp_out ? ifp_out->name : "<oif?>",
	      oif_vif_index,
	      ttl,
	      oif_uptime,
	      VTY_NEWLINE);
    }
  }
}

DEFUN (show_ip_mroute,
       show_ip_mroute_cmd,
       "show ip mroute",
       SHOW_STR
       IP_STR
       MROUTE_STR)
{
  show_mroute(vty);
  return CMD_SUCCESS;
}

static void show_mroute_count(struct vty *vty)
{
  struct listnode    *node;
  struct channel_oil *c_oil;

  vty_out(vty, "%s", VTY_NEWLINE);
  
  vty_out(vty, "Source          Group           Packets      Bytes WrongIf  %s",
	  VTY_NEWLINE);

  for (ALL_LIST_ELEMENTS_RO(qpim_channel_oil_list, node, c_oil)) {
    char group_str[100]; 
    char source_str[100];
    struct sioc_sg_req sgreq;

    memset(&sgreq, 0, sizeof(sgreq));
    sgreq.src = c_oil->oil.mfcc_origin;
    sgreq.grp = c_oil->oil.mfcc_mcastgrp;

    pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, sizeof(group_str));
    pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, sizeof(source_str));

    if (ioctl(qpim_mroute_socket_fd, SIOCGETSGCNT, &sgreq)) {
      int e = errno;
      vty_out(vty,
	      "ioctl(SIOCGETSGCNT=%d) failure for (S,G)=(%s,%s): errno=%d: %s%s",
	      SIOCGETSGCNT,
	      source_str,
	      group_str,
	      e,
	      safe_strerror(e),
	      VTY_NEWLINE);	      
      continue;
    }
    
    vty_out(vty, "%-15s %-15s %7ld %10ld %7ld %s",
	    source_str,
	    group_str,
	    sgreq.pktcnt,
	    sgreq.bytecnt,
	    sgreq.wrong_if,
	    VTY_NEWLINE);

  }
}

DEFUN (show_ip_mroute_count,
       show_ip_mroute_count_cmd,
       "show ip mroute count",
       SHOW_STR
       IP_STR
       MROUTE_STR
       "Route and packet count data\n")
{
  show_mroute_count(vty);
  return CMD_SUCCESS;
}

DEFUN (show_ip_route,
       show_ip_route_cmd,
       "show ip route A.B.C.D",
       SHOW_STR
       IP_STR
       ROUTE_STR
       "Unicast address\n")
{
  struct in_addr addr;
  const char *addr_str;
  struct pim_nexthop nexthop;
  char nexthop_addr_str[100];
  int result;

  addr_str = argv[0];
  result = inet_pton(AF_INET, addr_str, &addr);
  if (result <= 0) {
    vty_out(vty, "Bad unicast address %s: errno=%d: %s%s",
	    addr_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  if (pim_nexthop_lookup(&nexthop, addr)) {
    vty_out(vty, "Failure querying RIB nexthop for unicast address %s%s",
	    addr_str, VTY_NEWLINE);
    return CMD_WARNING;
  }

  vty_out(vty, "Address         NextHop         Interface Metric Preference%s",
	  VTY_NEWLINE);

  pim_inet4_dump("<nexthop?>", nexthop.mrib_nexthop_addr,
		 nexthop_addr_str, sizeof(nexthop_addr_str));

  vty_out(vty, "%-15s %-15s %-9s %6d %10d%s",
	  addr_str,
	  nexthop_addr_str,
	  nexthop.interface ? nexthop.interface->name : "<ifname?>",
	  nexthop.mrib_route_metric,
	  nexthop.mrib_metric_preference,
	  VTY_NEWLINE);

  return CMD_SUCCESS;
}

static void show_ssmpingd(struct vty *vty)
{
  struct listnode      *node;
  struct ssmpingd_sock *ss;
  time_t                now;

  vty_out(vty, "Source          Socket Uptime  Requests%s",
	  VTY_NEWLINE);

  if (!qpim_ssmpingd_list)
    return;

  now = pim_time_monotonic_sec();

  for (ALL_LIST_ELEMENTS_RO(qpim_ssmpingd_list, node, ss)) {
    char source_str[100];
    char ss_uptime[10];

    pim_inet4_dump("<src?>", ss->source_addr, source_str, sizeof(source_str));
    pim_time_uptime(ss_uptime, sizeof(ss_uptime), now - ss->creation);

    vty_out(vty, "%-15s %6d %8s %8lld%s",
	    source_str,
	    ss->sock_fd,
	    ss_uptime,
	    ss->requests,
	    VTY_NEWLINE);
  }
}

DEFUN (show_ip_ssmpingd,
       show_ip_ssmpingd_cmd,
       "show ip ssmpingd",
       SHOW_STR
       IP_STR
       SHOW_SSMPINGD_STR)
{
  show_ssmpingd(vty);
  return CMD_SUCCESS;
}

static void mroute_add_all()
{
  struct listnode    *node;
  struct channel_oil *c_oil;

  for (ALL_LIST_ELEMENTS_RO(qpim_channel_oil_list, node, c_oil)) {
    if (pim_mroute_add(&c_oil->oil)) {
      /* just log warning */
      char source_str[100];
      char group_str[100]; 
      pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, sizeof(source_str));
      pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, sizeof(group_str));
      zlog_warn("%s %s: (S,G)=(%s,%s) failure writing MFC",
		__FILE__, __PRETTY_FUNCTION__,
		source_str, group_str);
    }
  }
}

static void mroute_del_all()
{
  struct listnode    *node;
  struct channel_oil *c_oil;

  for (ALL_LIST_ELEMENTS_RO(qpim_channel_oil_list, node, c_oil)) {
    if (pim_mroute_del(&c_oil->oil)) {
      /* just log warning */
      char source_str[100];
      char group_str[100]; 
      pim_inet4_dump("<source?>", c_oil->oil.mfcc_origin, source_str, sizeof(source_str));
      pim_inet4_dump("<group?>", c_oil->oil.mfcc_mcastgrp, group_str, sizeof(group_str));
      zlog_warn("%s %s: (S,G)=(%s,%s) failure clearing MFC",
		__FILE__, __PRETTY_FUNCTION__,
		source_str, group_str);
    }
  }
}

DEFUN (ip_multicast_routing,
       ip_multicast_routing_cmd,
       PIM_CMD_IP_MULTICAST_ROUTING,
       IP_STR
       "Enable IP multicast forwarding\n")
{
  pim_mroute_socket_enable();
  pim_if_add_vif_all();
  mroute_add_all();
  return CMD_SUCCESS;
}

DEFUN (no_ip_multicast_routing,
       no_ip_multicast_routing_cmd,
       PIM_CMD_NO " " PIM_CMD_IP_MULTICAST_ROUTING,
       NO_STR
       IP_STR
       "Global IP configuration subcommands\n"
       "Enable IP multicast forwarding\n")
{
  mroute_del_all();
  pim_if_del_vif_all();
  pim_mroute_socket_disable();
  return CMD_SUCCESS;
}

DEFUN (ip_ssmpingd,
       ip_ssmpingd_cmd,
       "ip ssmpingd [A.B.C.D]",
       IP_STR
       CONF_SSMPINGD_STR
       "Source address\n")
{
  int result;
  struct in_addr source_addr;
  const char *source_str = (argc > 0) ? argv[0] : "0.0.0.0";

  result = inet_pton(AF_INET, source_str, &source_addr);
  if (result <= 0) {
    vty_out(vty, "%% Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  result = pim_ssmpingd_start(source_addr);
  if (result) {
    vty_out(vty, "%% Failure starting ssmpingd for source %s: %d%s",
	    source_str, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

DEFUN (no_ip_ssmpingd,
       no_ip_ssmpingd_cmd,
       "no ip ssmpingd [A.B.C.D]",
       NO_STR
       IP_STR
       CONF_SSMPINGD_STR
       "Source address\n")
{
  int result;
  struct in_addr source_addr;
  const char *source_str = (argc > 0) ? argv[0] : "0.0.0.0";

  result = inet_pton(AF_INET, source_str, &source_addr);
  if (result <= 0) {
    vty_out(vty, "%% Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  result = pim_ssmpingd_stop(source_addr);
  if (result) {
    vty_out(vty, "%% Failure stopping ssmpingd for source %s: %d%s",
	    source_str, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

DEFUN (interface_ip_igmp,
       interface_ip_igmp_cmd,
       "ip igmp",
       IP_STR
       IFACE_IGMP_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp) {
    pim_ifp = pim_if_new(ifp, 1 /* igmp=true */, 0 /* pim=false */);
    if (!pim_ifp) {
      vty_out(vty, "Could not enable IGMP on interface %s%s",
	      ifp->name, VTY_NEWLINE);
      return CMD_WARNING;
    }
  }
  else {
    PIM_IF_DO_IGMP(pim_ifp->options);
  }

  pim_if_addr_add_all(ifp);
  pim_if_membership_refresh(ifp);

  return CMD_SUCCESS;
}

DEFUN (interface_no_ip_igmp,
       interface_no_ip_igmp_cmd,
       "no ip igmp",
       NO_STR
       IP_STR
       IFACE_IGMP_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;

  ifp = vty->index;
  pim_ifp = ifp->info;
  if (!pim_ifp)
    return CMD_SUCCESS;

  PIM_IF_DONT_IGMP(pim_ifp->options);

  pim_if_membership_clear(ifp);

  pim_if_addr_del_all(ifp);

  if (!PIM_IF_TEST_PIM(pim_ifp->options)) {
    pim_if_delete(ifp);
  }

  return CMD_SUCCESS;
}

DEFUN (interface_ip_igmp_join,
       interface_ip_igmp_join_cmd,
       "ip igmp join A.B.C.D A.B.C.D",
       IP_STR
       IFACE_IGMP_STR
       "IGMP join multicast group\n"
       "Multicast group address\n"
       "Source address\n")
{
  struct interface *ifp;
  const char *group_str;
  const char *source_str;
  struct in_addr group_addr;
  struct in_addr source_addr;
  int result;

  ifp = vty->index;

  /* Group address */
  group_str = argv[0];
  result = inet_pton(AF_INET, group_str, &group_addr);
  if (result <= 0) {
    vty_out(vty, "Bad group address %s: errno=%d: %s%s",
	    group_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Source address */
  source_str = argv[1];
  result = inet_pton(AF_INET, source_str, &source_addr);
  if (result <= 0) {
    vty_out(vty, "Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  result = pim_if_igmp_join_add(ifp, group_addr, source_addr);
  if (result) {
    vty_out(vty, "%% Failure joining IGMP group %s source %s on interface %s: %d%s",
	    group_str, source_str, ifp->name, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

DEFUN (interface_no_ip_igmp_join,
       interface_no_ip_igmp_join_cmd,
       "no ip igmp join A.B.C.D A.B.C.D",
       NO_STR
       IP_STR
       IFACE_IGMP_STR
       "IGMP join multicast group\n"
       "Multicast group address\n"
       "Source address\n")
{
  struct interface *ifp;
  const char *group_str;
  const char *source_str;
  struct in_addr group_addr;
  struct in_addr source_addr;
  int result;

  ifp = vty->index;

  /* Group address */
  group_str = argv[0];
  result = inet_pton(AF_INET, group_str, &group_addr);
  if (result <= 0) {
    vty_out(vty, "Bad group address %s: errno=%d: %s%s",
	    group_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Source address */
  source_str = argv[1];
  result = inet_pton(AF_INET, source_str, &source_addr);
  if (result <= 0) {
    vty_out(vty, "Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  result = pim_if_igmp_join_del(ifp, group_addr, source_addr);
  if (result) {
    vty_out(vty, "%% Failure leaving IGMP group %s source %s on interface %s: %d%s",
	    group_str, source_str, ifp->name, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

/*
  CLI reconfiguration affects the interface level (struct pim_interface).
  This function propagates the reconfiguration to every active socket
  for that interface.
 */
static void igmp_sock_query_interval_reconfig(struct igmp_sock *igmp)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;

  zassert(igmp);

  /* other querier present? */

  if (igmp->t_other_querier_timer)
    return;

  /* this is the querier */

  zassert(igmp->interface);
  zassert(igmp->interface->info);

  ifp = igmp->interface;
  pim_ifp = ifp->info;

  if (PIM_DEBUG_IGMP_TRACE) {
    char ifaddr_str[100];
    pim_inet4_dump("<ifaddr?>", igmp->ifaddr, ifaddr_str, sizeof(ifaddr_str));
    zlog_debug("%s: Querier %s on %s reconfig query_interval=%d",
	       __PRETTY_FUNCTION__,
	       ifaddr_str,
	       ifp->name,
	       pim_ifp->igmp_default_query_interval);
  }

  /*
    igmp_startup_mode_on() will reset QQI:

    igmp->querier_query_interval = pim_ifp->igmp_default_query_interval;
  */
  igmp_startup_mode_on(igmp);
}

static void igmp_sock_query_reschedule(struct igmp_sock *igmp)
{
  if (igmp->t_igmp_query_timer) {
    /* other querier present */
    zassert(igmp->t_igmp_query_timer);
    zassert(!igmp->t_other_querier_timer);

    pim_igmp_general_query_off(igmp);
    pim_igmp_general_query_on(igmp);

    zassert(igmp->t_igmp_query_timer);
    zassert(!igmp->t_other_querier_timer);
  }
  else {
    /* this is the querier */

    zassert(!igmp->t_igmp_query_timer);
    zassert(igmp->t_other_querier_timer);

    pim_igmp_other_querier_timer_off(igmp);
    pim_igmp_other_querier_timer_on(igmp);

    zassert(!igmp->t_igmp_query_timer);
    zassert(igmp->t_other_querier_timer);
  }
}

static void change_query_interval(struct pim_interface *pim_ifp,
				  int query_interval)
{
  struct listnode  *sock_node;
  struct igmp_sock *igmp;

  pim_ifp->igmp_default_query_interval = query_interval;

  for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
    igmp_sock_query_interval_reconfig(igmp);
    igmp_sock_query_reschedule(igmp);
  }
}

static void change_query_max_response_time(struct pim_interface *pim_ifp,
					   int query_max_response_time_dsec)
{
  struct listnode  *sock_node;
  struct igmp_sock *igmp;

  pim_ifp->igmp_query_max_response_time_dsec = query_max_response_time_dsec;

  /*
    Below we modify socket/group/source timers in order to quickly
    reflect the change. Otherwise, those timers would eventually catch
    up.
   */

  /* scan all sockets */
  for (ALL_LIST_ELEMENTS_RO(pim_ifp->igmp_socket_list, sock_node, igmp)) {
    struct listnode   *grp_node;
    struct igmp_group *grp;

    /* reschedule socket general query */
    igmp_sock_query_reschedule(igmp);

    /* scan socket groups */
    for (ALL_LIST_ELEMENTS_RO(igmp->igmp_group_list, grp_node, grp)) {
      struct listnode    *src_node;
      struct igmp_source *src;

      /* reset group timers for groups in EXCLUDE mode */
      if (grp->group_filtermode_isexcl) {
	igmp_group_reset_gmi(grp);
      }

      /* scan group sources */
      for (ALL_LIST_ELEMENTS_RO(grp->group_source_list, src_node, src)) {

	/* reset source timers for sources with running timers */
	if (src->t_source_timer) {
	  igmp_source_reset_gmi(igmp, grp, src);
	}
      }
    }
  }
}

#define IGMP_QUERY_INTERVAL_MIN (1)
#define IGMP_QUERY_INTERVAL_MAX (1800)

DEFUN (interface_ip_igmp_query_interval,
       interface_ip_igmp_query_interval_cmd,
       PIM_CMD_IP_IGMP_QUERY_INTERVAL " <1-1800>",
       IP_STR
       IFACE_IGMP_STR
       IFACE_IGMP_QUERY_INTERVAL_STR
       "Query interval in seconds\n")
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;
  int query_interval;
  int query_interval_dsec;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp) {
    vty_out(vty,
	    "IGMP not enabled on interface %s. Please enable IGMP first.%s",
	    ifp->name,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  query_interval = atoi(argv[0]);
  query_interval_dsec = 10 * query_interval;

  /*
    It seems we don't need to check bounds since command.c does it
    already, but we verify them anyway for extra safety.
  */
  if (query_interval < IGMP_QUERY_INTERVAL_MIN) {
    vty_out(vty, "General query interval %d lower than minimum %d%s",
	    query_interval,
	    IGMP_QUERY_INTERVAL_MIN,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }
  if (query_interval > IGMP_QUERY_INTERVAL_MAX) {
    vty_out(vty, "General query interval %d higher than maximum %d%s",
	    query_interval,
	    IGMP_QUERY_INTERVAL_MAX,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  if (query_interval_dsec <= pim_ifp->igmp_query_max_response_time_dsec) {
    vty_out(vty,
	    "Can't set general query interval %d dsec <= query max response time %d dsec.%s",
	    query_interval_dsec, pim_ifp->igmp_query_max_response_time_dsec,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  change_query_interval(pim_ifp, query_interval);

  return CMD_SUCCESS;
}

DEFUN (interface_no_ip_igmp_query_interval,
       interface_no_ip_igmp_query_interval_cmd,
       PIM_CMD_NO " " PIM_CMD_IP_IGMP_QUERY_INTERVAL,
       NO_STR
       IP_STR
       IFACE_IGMP_STR
       IFACE_IGMP_QUERY_INTERVAL_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;
  int default_query_interval_dsec;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp)
    return CMD_SUCCESS;

  default_query_interval_dsec = IGMP_GENERAL_QUERY_INTERVAL * 10;

  if (default_query_interval_dsec <= pim_ifp->igmp_query_max_response_time_dsec) {
    vty_out(vty,
	    "Can't set default general query interval %d dsec <= query max response time %d dsec.%s",
	    default_query_interval_dsec, pim_ifp->igmp_query_max_response_time_dsec,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  change_query_interval(pim_ifp, IGMP_GENERAL_QUERY_INTERVAL);

  return CMD_SUCCESS;
}

#define IGMP_QUERY_MAX_RESPONSE_TIME_MIN (1)
#define IGMP_QUERY_MAX_RESPONSE_TIME_MAX (25)

DEFUN (interface_ip_igmp_query_max_response_time,
       interface_ip_igmp_query_max_response_time_cmd,
       PIM_CMD_IP_IGMP_QUERY_MAX_RESPONSE_TIME " <1-25>",
       IP_STR
       IFACE_IGMP_STR
       IFACE_IGMP_QUERY_MAX_RESPONSE_TIME_STR
       "Query response value in seconds\n")
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;
  int query_max_response_time;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp) {
    vty_out(vty,
	    "IGMP not enabled on interface %s. Please enable IGMP first.%s",
	    ifp->name,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  query_max_response_time = atoi(argv[0]);

  /*
    It seems we don't need to check bounds since command.c does it
    already, but we verify them anyway for extra safety.
  */
  if (query_max_response_time < IGMP_QUERY_MAX_RESPONSE_TIME_MIN) {
    vty_out(vty, "Query max response time %d sec lower than minimum %d sec%s",
	    query_max_response_time,
	    IGMP_QUERY_MAX_RESPONSE_TIME_MIN,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }
  if (query_max_response_time > IGMP_QUERY_MAX_RESPONSE_TIME_MAX) {
    vty_out(vty, "Query max response time %d sec higher than maximum %d sec%s",
	    query_max_response_time,
	    IGMP_QUERY_MAX_RESPONSE_TIME_MAX,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  if (query_max_response_time >= pim_ifp->igmp_default_query_interval) {
    vty_out(vty,
	    "Can't set query max response time %d sec >= general query interval %d sec%s",
	    query_max_response_time, pim_ifp->igmp_default_query_interval,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  change_query_max_response_time(pim_ifp, 10 * query_max_response_time);

  return CMD_SUCCESS;
}

DEFUN (interface_no_ip_igmp_query_max_response_time,
       interface_no_ip_igmp_query_max_response_time_cmd,
       PIM_CMD_NO " " PIM_CMD_IP_IGMP_QUERY_MAX_RESPONSE_TIME,
       NO_STR
       IP_STR
       IFACE_IGMP_STR
       IFACE_IGMP_QUERY_MAX_RESPONSE_TIME_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;
  int default_query_interval_dsec;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp)
    return CMD_SUCCESS;

  default_query_interval_dsec = 10 * pim_ifp->igmp_default_query_interval;

  if (IGMP_QUERY_MAX_RESPONSE_TIME_DSEC >= default_query_interval_dsec) {
    vty_out(vty,
	    "Can't set default query max response time %d dsec >= general query interval %d dsec.%s",
	    IGMP_QUERY_MAX_RESPONSE_TIME_DSEC, default_query_interval_dsec,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  change_query_max_response_time(pim_ifp, IGMP_QUERY_MAX_RESPONSE_TIME_DSEC);

  return CMD_SUCCESS;
}

#define IGMP_QUERY_MAX_RESPONSE_TIME_MIN_DSEC (10)
#define IGMP_QUERY_MAX_RESPONSE_TIME_MAX_DSEC (250)

DEFUN (interface_ip_igmp_query_max_response_time_dsec,
       interface_ip_igmp_query_max_response_time_dsec_cmd,
       PIM_CMD_IP_IGMP_QUERY_MAX_RESPONSE_TIME_DSEC " <10-250>",
       IP_STR
       IFACE_IGMP_STR
       IFACE_IGMP_QUERY_MAX_RESPONSE_TIME_DSEC_STR
       "Query response value in deciseconds\n")
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;
  int query_max_response_time_dsec;
  int default_query_interval_dsec;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp) {
    vty_out(vty,
	    "IGMP not enabled on interface %s. Please enable IGMP first.%s",
	    ifp->name,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  query_max_response_time_dsec = atoi(argv[0]);

  /*
    It seems we don't need to check bounds since command.c does it
    already, but we verify them anyway for extra safety.
  */
  if (query_max_response_time_dsec < IGMP_QUERY_MAX_RESPONSE_TIME_MIN_DSEC) {
    vty_out(vty, "Query max response time %d dsec lower than minimum %d dsec%s",
	    query_max_response_time_dsec,
	    IGMP_QUERY_MAX_RESPONSE_TIME_MIN_DSEC,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }
  if (query_max_response_time_dsec > IGMP_QUERY_MAX_RESPONSE_TIME_MAX_DSEC) {
    vty_out(vty, "Query max response time %d dsec higher than maximum %d dsec%s",
	    query_max_response_time_dsec,
	    IGMP_QUERY_MAX_RESPONSE_TIME_MAX_DSEC,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  default_query_interval_dsec = 10 * pim_ifp->igmp_default_query_interval;

  if (query_max_response_time_dsec >= default_query_interval_dsec) {
    vty_out(vty,
	    "Can't set query max response time %d dsec >= general query interval %d dsec%s",
	    query_max_response_time_dsec, default_query_interval_dsec,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  change_query_max_response_time(pim_ifp, query_max_response_time_dsec);

  return CMD_SUCCESS;
}

DEFUN (interface_no_ip_igmp_query_max_response_time_dsec,
       interface_no_ip_igmp_query_max_response_time_dsec_cmd,
       PIM_CMD_NO " " PIM_CMD_IP_IGMP_QUERY_MAX_RESPONSE_TIME_DSEC,
       NO_STR
       IP_STR
       IFACE_IGMP_STR
       IFACE_IGMP_QUERY_MAX_RESPONSE_TIME_DSEC_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;
  int default_query_interval_dsec;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp)
    return CMD_SUCCESS;

  default_query_interval_dsec = 10 * pim_ifp->igmp_default_query_interval;

  if (IGMP_QUERY_MAX_RESPONSE_TIME_DSEC >= default_query_interval_dsec) {
    vty_out(vty,
	    "Can't set default query max response time %d dsec >= general query interval %d dsec.%s",
	    IGMP_QUERY_MAX_RESPONSE_TIME_DSEC, default_query_interval_dsec,
	    VTY_NEWLINE);
    return CMD_WARNING;
  }

  change_query_max_response_time(pim_ifp, IGMP_QUERY_MAX_RESPONSE_TIME_DSEC);

  return CMD_SUCCESS;
}

DEFUN (interface_ip_pim_ssm,
       interface_ip_pim_ssm_cmd,
       "ip pim ssm",
       IP_STR
       PIM_STR
       IFACE_PIM_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;

  ifp = vty->index;
  pim_ifp = ifp->info;

  if (!pim_ifp) {
    pim_ifp = pim_if_new(ifp, 0 /* igmp=false */, 1 /* pim=true */);
    if (!pim_ifp) {
      vty_out(vty, "Could not enable PIM on interface%s", VTY_NEWLINE);
      return CMD_WARNING;
    }
  }
  else {
    PIM_IF_DO_PIM(pim_ifp->options);
  }

  pim_if_addr_add_all(ifp);
  pim_if_membership_refresh(ifp);

  return CMD_SUCCESS;
}

DEFUN (interface_no_ip_pim_ssm,
       interface_no_ip_pim_ssm_cmd,
       "no ip pim ssm",
       NO_STR
       IP_STR
       PIM_STR
       IFACE_PIM_STR)
{
  struct interface *ifp;
  struct pim_interface *pim_ifp;

  ifp = vty->index;
  pim_ifp = ifp->info;
  if (!pim_ifp)
    return CMD_SUCCESS;

  PIM_IF_DONT_PIM(pim_ifp->options);

  pim_if_membership_clear(ifp);

  /*
    pim_if_addr_del_all() removes all sockets from
    pim_ifp->igmp_socket_list.
   */
  pim_if_addr_del_all(ifp);

  /*
    pim_sock_delete() removes all neighbors from
    pim_ifp->pim_neighbor_list.
   */
  pim_sock_delete(ifp, "pim unconfigured on interface");

  if (!PIM_IF_TEST_IGMP(pim_ifp->options)) {
    pim_if_delete(ifp);
  }

  return CMD_SUCCESS;
}

DEFUN (debug_igmp,
       debug_igmp_cmd,
       "debug igmp",
       DEBUG_STR
       DEBUG_IGMP_STR)
{
  PIM_DO_DEBUG_IGMP_EVENTS;
  PIM_DO_DEBUG_IGMP_PACKETS;
  PIM_DO_DEBUG_IGMP_TRACE;
  return CMD_SUCCESS;
}

DEFUN (no_debug_igmp,
       no_debug_igmp_cmd,
       "no debug igmp",
       NO_STR
       DEBUG_STR
       DEBUG_IGMP_STR)
{
  PIM_DONT_DEBUG_IGMP_EVENTS;
  PIM_DONT_DEBUG_IGMP_PACKETS;
  PIM_DONT_DEBUG_IGMP_TRACE;
  return CMD_SUCCESS;
}

ALIAS (no_debug_igmp,
       undebug_igmp_cmd,
       "undebug igmp",
       UNDEBUG_STR
       DEBUG_IGMP_STR)

DEFUN (debug_igmp_events,
       debug_igmp_events_cmd,
       "debug igmp events",
       DEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_EVENTS_STR)
{
  PIM_DO_DEBUG_IGMP_EVENTS;
  return CMD_SUCCESS;
}

DEFUN (no_debug_igmp_events,
       no_debug_igmp_events_cmd,
       "no debug igmp events",
       NO_STR
       DEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_EVENTS_STR)
{
  PIM_DONT_DEBUG_IGMP_EVENTS;
  return CMD_SUCCESS;
}

ALIAS (no_debug_igmp_events,
       undebug_igmp_events_cmd,
       "undebug igmp events",
       UNDEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_EVENTS_STR)

DEFUN (debug_igmp_packets,
       debug_igmp_packets_cmd,
       "debug igmp packets",
       DEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_PACKETS_STR)
{
  PIM_DO_DEBUG_IGMP_PACKETS;
  return CMD_SUCCESS;
}

DEFUN (no_debug_igmp_packets,
       no_debug_igmp_packets_cmd,
       "no debug igmp packets",
       NO_STR
       DEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_PACKETS_STR)
{
  PIM_DONT_DEBUG_IGMP_PACKETS;
  return CMD_SUCCESS;
}

ALIAS (no_debug_igmp_packets,
       undebug_igmp_packets_cmd,
       "undebug igmp packets",
       UNDEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_PACKETS_STR)

DEFUN (debug_igmp_trace,
       debug_igmp_trace_cmd,
       "debug igmp trace",
       DEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_TRACE_STR)
{
  PIM_DO_DEBUG_IGMP_TRACE;
  return CMD_SUCCESS;
}

DEFUN (no_debug_igmp_trace,
       no_debug_igmp_trace_cmd,
       "no debug igmp trace",
       NO_STR
       DEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_TRACE_STR)
{
  PIM_DONT_DEBUG_IGMP_TRACE;
  return CMD_SUCCESS;
}

ALIAS (no_debug_igmp_trace,
       undebug_igmp_trace_cmd,
       "undebug igmp trace",
       UNDEBUG_STR
       DEBUG_IGMP_STR
       DEBUG_IGMP_TRACE_STR)

DEFUN (debug_pim,
       debug_pim_cmd,
       "debug pim",
       DEBUG_STR
       DEBUG_PIM_STR)
{
  PIM_DO_DEBUG_PIM_EVENTS;
  PIM_DO_DEBUG_PIM_PACKETS;
  PIM_DO_DEBUG_PIM_TRACE;
  return CMD_SUCCESS;
}

DEFUN (no_debug_pim,
       no_debug_pim_cmd,
       "no debug pim",
       NO_STR
       DEBUG_STR
       DEBUG_PIM_STR)
{
  PIM_DONT_DEBUG_PIM_EVENTS;
  PIM_DONT_DEBUG_PIM_PACKETS;
  PIM_DONT_DEBUG_PIM_TRACE;
  return CMD_SUCCESS;
}

ALIAS (no_debug_pim,
       undebug_pim_cmd,
       "undebug pim",
       UNDEBUG_STR
       DEBUG_PIM_STR)

DEFUN (debug_pim_events,
       debug_pim_events_cmd,
       "debug pim events",
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_EVENTS_STR)
{
  PIM_DO_DEBUG_PIM_EVENTS;
  return CMD_SUCCESS;
}

DEFUN (no_debug_pim_events,
       no_debug_pim_events_cmd,
       "no debug pim events",
       NO_STR
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_EVENTS_STR)
{
  PIM_DONT_DEBUG_PIM_EVENTS;
  return CMD_SUCCESS;
}

ALIAS (no_debug_pim_events,
       undebug_pim_events_cmd,
       "undebug pim events",
       UNDEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_EVENTS_STR)

DEFUN (debug_pim_packets,
       debug_pim_packets_cmd,
       "debug pim packets",
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_PACKETS_STR)
{
  PIM_DO_DEBUG_PIM_PACKETS;
  return CMD_SUCCESS;
}

DEFUN (no_debug_pim_packets,
       no_debug_pim_packets_cmd,
       "no debug pim packets",
       NO_STR
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_PACKETS_STR)
{
  PIM_DONT_DEBUG_PIM_PACKETS;
  return CMD_SUCCESS;
}

ALIAS (no_debug_pim_packets,
       undebug_pim_packets_cmd,
       "undebug pim packets",
       UNDEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_PACKETS_STR)

DEFUN (debug_pim_trace,
       debug_pim_trace_cmd,
       "debug pim trace",
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_TRACE_STR)
{
  PIM_DO_DEBUG_PIM_TRACE;
  return CMD_SUCCESS;
}

DEFUN (no_debug_pim_trace,
       no_debug_pim_trace_cmd,
       "no debug pim trace",
       NO_STR
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_TRACE_STR)
{
  PIM_DONT_DEBUG_PIM_TRACE;
  return CMD_SUCCESS;
}

ALIAS (no_debug_pim_trace,
       undebug_pim_trace_cmd,
       "undebug pim trace",
       UNDEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_TRACE_STR)

DEFUN (debug_ssmpingd,
       debug_ssmpingd_cmd,
       "debug ssmpingd",
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_SSMPINGD_STR)
{
  PIM_DO_DEBUG_SSMPINGD;
  return CMD_SUCCESS;
}

DEFUN (no_debug_ssmpingd,
       no_debug_ssmpingd_cmd,
       "no debug ssmpingd",
       NO_STR
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_SSMPINGD_STR)
{
  PIM_DONT_DEBUG_SSMPINGD;
  return CMD_SUCCESS;
}

ALIAS (no_debug_ssmpingd,
       undebug_ssmpingd_cmd,
       "undebug ssmpingd",
       UNDEBUG_STR
       DEBUG_PIM_STR
       DEBUG_SSMPINGD_STR)

DEFUN (debug_pim_zebra,
       debug_pim_zebra_cmd,
       "debug pim zebra",
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_ZEBRA_STR)
{
  PIM_DO_DEBUG_ZEBRA;
  return CMD_SUCCESS;
}

DEFUN (no_debug_pim_zebra,
       no_debug_pim_zebra_cmd,
       "no debug pim zebra",
       NO_STR
       DEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_ZEBRA_STR)
{
  PIM_DONT_DEBUG_ZEBRA;
  return CMD_SUCCESS;
}

ALIAS (no_debug_pim_zebra,
       undebug_pim_zebra_cmd,
       "undebug pim zebra",
       UNDEBUG_STR
       DEBUG_PIM_STR
       DEBUG_PIM_ZEBRA_STR)

DEFUN (show_debugging,
       show_debugging_cmd,
       "show debugging",
       SHOW_STR
       "State of each debugging option\n")
{
  pim_debug_config_write(vty);
  return CMD_SUCCESS;
}

static struct igmp_sock *find_igmp_sock_by_fd(int fd)
{
  struct listnode  *ifnode;
  struct interface *ifp;

  /* scan all interfaces */
  for (ALL_LIST_ELEMENTS_RO(iflist, ifnode, ifp)) {
    struct pim_interface *pim_ifp;
    struct igmp_sock     *igmp;
    
    if (!ifp->info)
      continue;

    pim_ifp = ifp->info;

    /* lookup igmp socket under current interface */
    igmp = igmp_sock_lookup_by_fd(pim_ifp->igmp_socket_list, fd);
    if (igmp)
      return igmp;
  }

  return 0;
}

DEFUN (test_igmp_receive_report,
       test_igmp_receive_report_cmd,
       "test igmp receive report <0-65535> A.B.C.D <1-6> .LINE",
       "Test\n"
       "Test IGMP protocol\n"
       "Test IGMP message\n"
       "Test IGMP report\n"
       "Socket\n"
       "IGMP group address\n"
       "Record type\n"
       "Sources\n")
{
  char              buf[1000];
  char             *igmp_msg;
  struct ip        *ip_hdr;
  size_t            ip_hlen; /* ip header length in bytes */
  int               ip_msg_len;
  int               igmp_msg_len;
  const char       *socket;
  int               socket_fd;
  const char       *grp_str;
  struct in_addr    grp_addr;
  const char       *record_type_str;
  int               record_type;
  const char       *src_str;
  int               result;
  struct igmp_sock *igmp;
  char             *group_record;
  int               num_sources;
  struct in_addr   *sources;
  struct in_addr   *src_addr;
  int               argi;

  socket = argv[0];
  socket_fd = atoi(socket);
  igmp = find_igmp_sock_by_fd(socket_fd);
  if (!igmp) {
    vty_out(vty, "Could not find IGMP socket %s: fd=%d%s",
	    socket, socket_fd, VTY_NEWLINE);
    return CMD_WARNING;
  }

  grp_str = argv[1];
  result = inet_pton(AF_INET, grp_str, &grp_addr);
  if (result <= 0) {
    vty_out(vty, "Bad group address %s: errno=%d: %s%s",
	    grp_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  record_type_str = argv[2];
  record_type = atoi(record_type_str);

  /*
    Tweak IP header
   */
  ip_hdr = (struct ip *) buf;
  ip_hdr->ip_p = PIM_IP_PROTO_IGMP;
  ip_hlen = PIM_IP_HEADER_MIN_LEN; /* ip header length in bytes */
  ip_hdr->ip_hl = ip_hlen >> 2;    /* ip header length in 4-byte words */
  ip_hdr->ip_src = igmp->ifaddr;
  ip_hdr->ip_dst = igmp->ifaddr;

  /*
    Build IGMP v3 report message
   */
  igmp_msg = buf + ip_hlen;
  group_record = igmp_msg + IGMP_V3_REPORT_GROUPPRECORD_OFFSET;
  *igmp_msg = PIM_IGMP_V3_MEMBERSHIP_REPORT; /* type */
  *(uint16_t *)      (igmp_msg + IGMP_V3_CHECKSUM_OFFSET) = 0; /* for computing checksum */
  *(uint16_t *)      (igmp_msg + IGMP_V3_REPORT_NUMGROUPS_OFFSET) = htons(1); /* one group record */
  *(uint8_t  *)      (group_record + IGMP_V3_GROUP_RECORD_TYPE_OFFSET) = record_type;
  *(struct in_addr *)(group_record + IGMP_V3_GROUP_RECORD_GROUP_OFFSET) = grp_addr;

  /* Scan LINE sources */
  sources = (struct in_addr *) (group_record + IGMP_V3_GROUP_RECORD_SOURCE_OFFSET);
  src_addr = sources;
  for (argi = 3; argi < argc; ++argi,++src_addr) {
    src_str = argv[argi];
    result = inet_pton(AF_INET, src_str, src_addr);
    if (result <= 0) {
      vty_out(vty, "Bad source address %s: errno=%d: %s%s",
	      src_str, errno, safe_strerror(errno), VTY_NEWLINE);
      return CMD_WARNING;
    }
  }
  num_sources = src_addr - sources;

  *(uint16_t *)(group_record + IGMP_V3_GROUP_RECORD_NUMSOURCES_OFFSET) = htons(num_sources);

  igmp_msg_len = IGMP_V3_MSG_MIN_SIZE + (num_sources << 4);   /* v3 report for one single group record */

  /* compute checksum */
  *(uint16_t *)(igmp_msg + IGMP_V3_CHECKSUM_OFFSET) = pim_inet_checksum(igmp_msg, igmp_msg_len);

  /* "receive" message */

  ip_msg_len = ip_hlen + igmp_msg_len;
  result = pim_igmp_packet(igmp, buf, ip_msg_len);
  if (result) {
    vty_out(vty, "pim_igmp_packet(len=%d) returned: %d%s",
	    ip_msg_len, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

DEFUN (test_pim_receive_hello,
       test_pim_receive_hello_cmd,
       "test pim receive hello INTERFACE A.B.C.D <0-65535> <0-65535> <0-65535> <0-32767> <0-65535> <0-1>[LINE]",
       "Test\n"
       "Test PIM protocol\n"
       "Test PIM message reception\n"
       "Test PIM hello reception from neighbor\n"
       "Interface\n"
       "Neighbor address\n"
       "Neighbor holdtime\n"
       "Neighbor DR priority\n"
       "Neighbor generation ID\n"
       "Neighbor propagation delay (msec)\n"
       "Neighbor override interval (msec)\n"
       "Neighbor LAN prune delay T-bit\n"
       "Neighbor secondary addresses\n")
{
  char              buf[1000];
  char             *pim_msg;
  struct ip        *ip_hdr;
  size_t            ip_hlen; /* ip header length in bytes */
  int               ip_msg_len;
  int               pim_tlv_size;
  int               pim_msg_size;
  const char       *neigh_str;
  struct in_addr    neigh_addr;
  const char       *ifname;
  struct interface *ifp;
  uint16_t          neigh_holdtime;
  uint16_t          neigh_propagation_delay;
  uint16_t          neigh_override_interval;
  int               neigh_can_disable_join_suppression;
  uint32_t          neigh_dr_priority;
  uint32_t          neigh_generation_id;
  int               argi;
  int               result;

  /* Find interface */
  ifname = argv[0];
  ifp = if_lookup_by_name(ifname);
  if (!ifp) {
    vty_out(vty, "No such interface name %s%s",
	    ifname, VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Neighbor address */
  neigh_str = argv[1];
  result = inet_pton(AF_INET, neigh_str, &neigh_addr);
  if (result <= 0) {
    vty_out(vty, "Bad neighbor address %s: errno=%d: %s%s",
	    neigh_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  neigh_holdtime                     = atoi(argv[2]);
  neigh_dr_priority                  = atoi(argv[3]);
  neigh_generation_id                = atoi(argv[4]);
  neigh_propagation_delay            = atoi(argv[5]);
  neigh_override_interval            = atoi(argv[6]);
  neigh_can_disable_join_suppression = atoi(argv[7]);

  /*
    Tweak IP header
   */
  ip_hdr = (struct ip *) buf;
  ip_hdr->ip_p = PIM_IP_PROTO_PIM;
  ip_hlen = PIM_IP_HEADER_MIN_LEN; /* ip header length in bytes */
  ip_hdr->ip_hl = ip_hlen >> 2;    /* ip header length in 4-byte words */
  ip_hdr->ip_src = neigh_addr;
  ip_hdr->ip_dst = qpim_all_pim_routers_addr;

  /*
    Build PIM hello message
  */
  pim_msg = buf + ip_hlen;

  /* Scan LINE addresses */
  for (argi = 8; argi < argc; ++argi) {
    const char *sec_str = argv[argi];
    struct in_addr sec_addr;
    result = inet_pton(AF_INET, sec_str, &sec_addr);
    if (result <= 0) {
      vty_out(vty, "Bad neighbor secondary address %s: errno=%d: %s%s",
	      sec_str, errno, safe_strerror(errno), VTY_NEWLINE);
      return CMD_WARNING;
    }

    vty_out(vty,
	    "FIXME WRITEME consider neighbor secondary address %s%s",
	    sec_str, VTY_NEWLINE);
  }

  pim_tlv_size = pim_hello_build_tlv(ifp->name,
				     pim_msg + PIM_PIM_MIN_LEN,
				     sizeof(buf) - ip_hlen - PIM_PIM_MIN_LEN,
				     neigh_holdtime,
				     neigh_dr_priority,
				     neigh_generation_id,
				     neigh_propagation_delay,
				     neigh_override_interval,
				     neigh_can_disable_join_suppression,
				     0 /* FIXME secondary address list */);
  if (pim_tlv_size < 0) {
    vty_out(vty, "pim_hello_build_tlv() returned failure: %d%s",
	    pim_tlv_size, VTY_NEWLINE);
    return CMD_WARNING;
  }

  pim_msg_size = pim_tlv_size + PIM_PIM_MIN_LEN;

  pim_msg_build_header(pim_msg, pim_msg_size,
		       PIM_MSG_TYPE_HELLO);

  /* "receive" message */

  ip_msg_len = ip_hlen + pim_msg_size;
  result = pim_pim_packet(ifp, buf, ip_msg_len);
  if (result) {
    vty_out(vty, "pim_pim_packet(len=%d) returned failure: %d%s",
	    ip_msg_len, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

DEFUN (test_pim_receive_assert,
       test_pim_receive_assert_cmd,
       "test pim receive assert INTERFACE A.B.C.D A.B.C.D A.B.C.D <0-65535> <0-65535> <0-1>",
       "Test\n"
       "Test PIM protocol\n"
       "Test PIM message reception\n"
       "Test reception of PIM assert\n"
       "Interface\n"
       "Neighbor address\n"
       "Assert multicast group address\n"
       "Assert unicast source address\n"
       "Assert metric preference\n"
       "Assert route metric\n"
       "Assert RPT bit flag\n")
{
  char              buf[1000];
  char             *buf_pastend = buf + sizeof(buf);
  char             *pim_msg;
  struct ip        *ip_hdr;
  size_t            ip_hlen; /* ip header length in bytes */
  int               ip_msg_len;
  int               pim_msg_size;
  const char       *neigh_str;
  struct in_addr    neigh_addr;
  const char       *group_str;
  struct in_addr    group_addr;
  const char       *source_str;
  struct in_addr    source_addr;
  const char       *ifname;
  struct interface *ifp;
  uint32_t          assert_metric_preference;
  uint32_t          assert_route_metric;
  uint32_t          assert_rpt_bit_flag;
  int               remain;
  int               result;

  /* Find interface */
  ifname = argv[0];
  ifp = if_lookup_by_name(ifname);
  if (!ifp) {
    vty_out(vty, "No such interface name %s%s",
	    ifname, VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Neighbor address */
  neigh_str = argv[1];
  result = inet_pton(AF_INET, neigh_str, &neigh_addr);
  if (result <= 0) {
    vty_out(vty, "Bad neighbor address %s: errno=%d: %s%s",
	    neigh_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Group address */
  group_str = argv[2];
  result = inet_pton(AF_INET, group_str, &group_addr);
  if (result <= 0) {
    vty_out(vty, "Bad group address %s: errno=%d: %s%s",
	    group_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Source address */
  source_str = argv[3];
  result = inet_pton(AF_INET, source_str, &source_addr);
  if (result <= 0) {
    vty_out(vty, "Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  assert_metric_preference = atoi(argv[4]);
  assert_route_metric      = atoi(argv[5]);
  assert_rpt_bit_flag      = atoi(argv[6]);

  remain = buf_pastend - buf;
  if (remain < (int) sizeof(struct ip)) {
    vty_out(vty, "No room for ip header: buf_size=%d < ip_header_size=%d%s",
	    remain, sizeof(struct ip), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /*
    Tweak IP header
   */
  ip_hdr = (struct ip *) buf;
  ip_hdr->ip_p = PIM_IP_PROTO_PIM;
  ip_hlen = PIM_IP_HEADER_MIN_LEN; /* ip header length in bytes */
  ip_hdr->ip_hl = ip_hlen >> 2;    /* ip header length in 4-byte words */
  ip_hdr->ip_src = neigh_addr;
  ip_hdr->ip_dst = qpim_all_pim_routers_addr;

  /*
    Build PIM assert message
  */
  pim_msg = buf + ip_hlen; /* skip ip header */

  pim_msg_size = pim_assert_build_msg(pim_msg, buf_pastend - pim_msg, ifp,
				      group_addr, source_addr,
				      assert_metric_preference,
				      assert_route_metric,
				      assert_rpt_bit_flag);
  if (pim_msg_size < 0) {
    vty_out(vty, "Failure building PIM assert message: size=%d%s",
	    pim_msg_size, VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* "receive" message */

  ip_msg_len = ip_hlen + pim_msg_size;
  result = pim_pim_packet(ifp, buf, ip_msg_len);
  if (result) {
    vty_out(vty, "pim_pim_packet(len=%d) returned failure: %d%s",
	    ip_msg_len, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

static int recv_joinprune(struct vty *vty,
			  const char *argv[],
			  int src_is_join)
{
  char              buf[1000];
  const char       *buf_pastend = buf + sizeof(buf);
  char             *pim_msg;
  char             *pim_msg_curr;
  int               pim_msg_size;
  struct ip        *ip_hdr;
  size_t            ip_hlen; /* ip header length in bytes */
  int               ip_msg_len;
  uint16_t          neigh_holdtime;
  const char       *neigh_dst_str;
  struct in_addr    neigh_dst_addr;
  const char       *neigh_src_str;
  struct in_addr    neigh_src_addr;
  const char       *group_str;
  struct in_addr    group_addr;
  const char       *source_str;
  struct in_addr    source_addr;
  const char       *ifname;
  struct interface *ifp;
  int               result;
  int               remain;
  uint16_t          num_joined;
  uint16_t          num_pruned;

  /* Find interface */
  ifname = argv[0];
  ifp = if_lookup_by_name(ifname);
  if (!ifp) {
    vty_out(vty, "No such interface name %s%s",
	    ifname, VTY_NEWLINE);
    return CMD_WARNING;
  }

  neigh_holdtime = atoi(argv[1]);

  /* Neighbor destination address */
  neigh_dst_str = argv[2];
  result = inet_pton(AF_INET, neigh_dst_str, &neigh_dst_addr);
  if (result <= 0) {
    vty_out(vty, "Bad neighbor destination address %s: errno=%d: %s%s",
	    neigh_dst_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Neighbor source address */
  neigh_src_str = argv[3];
  result = inet_pton(AF_INET, neigh_src_str, &neigh_src_addr);
  if (result <= 0) {
    vty_out(vty, "Bad neighbor source address %s: errno=%d: %s%s",
	    neigh_src_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Multicast group address */
  group_str = argv[4];
  result = inet_pton(AF_INET, group_str, &group_addr);
  if (result <= 0) {
    vty_out(vty, "Bad group address %s: errno=%d: %s%s",
	    group_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Multicast source address */
  source_str = argv[5];
  result = inet_pton(AF_INET, source_str, &source_addr);
  if (result <= 0) {
    vty_out(vty, "Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /*
    Tweak IP header
   */
  ip_hdr = (struct ip *) buf;
  ip_hdr->ip_p = PIM_IP_PROTO_PIM;
  ip_hlen = PIM_IP_HEADER_MIN_LEN; /* ip header length in bytes */
  ip_hdr->ip_hl = ip_hlen >> 2;    /* ip header length in 4-byte words */
  ip_hdr->ip_src = neigh_src_addr;
  ip_hdr->ip_dst = qpim_all_pim_routers_addr;

  /*
    Build PIM message
  */
  pim_msg = buf + ip_hlen;

  /* skip room for pim header */
  pim_msg_curr = pim_msg + PIM_MSG_HEADER_LEN;

  remain = buf_pastend - pim_msg_curr;
  pim_msg_curr = pim_msg_addr_encode_ipv4_ucast(pim_msg_curr,
						remain,
						neigh_dst_addr);
  if (!pim_msg_curr) {
    vty_out(vty, "Failure encoding destination address %s: space left=%d%s",
	    neigh_dst_str, remain, VTY_NEWLINE);
    return CMD_WARNING;
  }

  remain = buf_pastend - pim_msg_curr;
  if (remain < 4) {
    vty_out(vty, "Group will not fit: space left=%d%s",
	    remain, VTY_NEWLINE);
    return CMD_WARNING;
  }

  *pim_msg_curr = 0; /* reserved */
  ++pim_msg_curr;
  *pim_msg_curr = 1; /* number of groups */
  ++pim_msg_curr;
  *((uint16_t *) pim_msg_curr) = htons(neigh_holdtime);
  ++pim_msg_curr;
  ++pim_msg_curr;

  remain = buf_pastend - pim_msg_curr;
  pim_msg_curr = pim_msg_addr_encode_ipv4_group(pim_msg_curr,
						remain,
						group_addr);
  if (!pim_msg_curr) {
    vty_out(vty, "Failure encoding group address %s: space left=%d%s",
	    group_str, remain, VTY_NEWLINE);
    return CMD_WARNING;
  }

  remain = buf_pastend - pim_msg_curr;
  if (remain < 4) {
    vty_out(vty, "Sources will not fit: space left=%d%s",
	    remain, VTY_NEWLINE);
    return CMD_WARNING;
  }

  if (src_is_join) {
    num_joined = 1;
    num_pruned = 0;
  }
  else {
    num_joined = 0;
    num_pruned = 1;
  }

  /* number of joined sources */
  *((uint16_t *) pim_msg_curr) = htons(num_joined);
  ++pim_msg_curr;
  ++pim_msg_curr;

  /* number of pruned sources */
  *((uint16_t *) pim_msg_curr) = htons(num_pruned);
  ++pim_msg_curr;
  ++pim_msg_curr;

  remain = buf_pastend - pim_msg_curr;
  pim_msg_curr = pim_msg_addr_encode_ipv4_source(pim_msg_curr,
						 remain,
						 source_addr);
  if (!pim_msg_curr) {
    vty_out(vty, "Failure encoding source address %s: space left=%d%s",
	    source_str, remain, VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Add PIM header */

  pim_msg_size = pim_msg_curr - pim_msg;

  pim_msg_build_header(pim_msg, pim_msg_size,
		       PIM_MSG_TYPE_JOIN_PRUNE);

  /*
    "Receive" message
  */

  ip_msg_len = ip_hlen + pim_msg_size;
  result = pim_pim_packet(ifp, buf, ip_msg_len);
  if (result) {
    vty_out(vty, "pim_pim_packet(len=%d) returned failure: %d%s",
	    ip_msg_len, result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

DEFUN (test_pim_receive_join,
       test_pim_receive_join_cmd,
       "test pim receive join INTERFACE <0-65535> A.B.C.D A.B.C.D A.B.C.D A.B.C.D",
       "Test\n"
       "Test PIM protocol\n"
       "Test PIM message reception\n"
       "Test PIM join reception from neighbor\n"
       "Interface\n"
       "Neighbor holdtime\n"
       "Upstream neighbor unicast destination address\n"
       "Downstream neighbor unicast source address\n"
       "Multicast group address\n"
       "Unicast source address\n")
{
  return recv_joinprune(vty, argv, 1 /* src_is_join=true */);
}

DEFUN (test_pim_receive_prune,
       test_pim_receive_prune_cmd,
       "test pim receive prune INTERFACE <0-65535> A.B.C.D A.B.C.D A.B.C.D A.B.C.D",
       "Test\n"
       "Test PIM protocol\n"
       "Test PIM message reception\n"
       "Test PIM prune reception from neighbor\n"
       "Interface\n"
       "Neighbor holdtime\n"
       "Upstream neighbor unicast destination address\n"
       "Downstream neighbor unicast source address\n"
       "Multicast group address\n"
       "Unicast source address\n")
{
  return recv_joinprune(vty, argv, 0 /* src_is_join=false */);
}

DEFUN (test_pim_receive_upcall,
       test_pim_receive_upcall_cmd,
       "test pim receive upcall (nocache|wrongvif|wholepkt) <0-65535> A.B.C.D A.B.C.D",
       "Test\n"
       "Test PIM protocol\n"
       "Test PIM message reception\n"
       "Test reception of kernel upcall\n"
       "NOCACHE kernel upcall\n"
       "WRONGVIF kernel upcall\n"
       "WHOLEPKT kernel upcall\n"
       "Input interface vif index\n"
       "Multicast group address\n"
       "Multicast source address\n")
{
  struct igmpmsg msg;
  const char *upcall_type;
  const char *group_str;
  const char *source_str;
  int result;

  upcall_type = argv[0];

  if (upcall_type[0] == 'n')
    msg.im_msgtype = IGMPMSG_NOCACHE;
  else if (upcall_type[1] == 'r')
    msg.im_msgtype = IGMPMSG_WRONGVIF;
  else if (upcall_type[1] == 'h')
    msg.im_msgtype = IGMPMSG_WHOLEPKT;
  else {
    vty_out(vty, "Unknown kernel upcall type: %s%s",
	    upcall_type, VTY_NEWLINE);
    return CMD_WARNING;
  }

  msg.im_vif = atoi(argv[1]);

  /* Group address */
  group_str = argv[2];
  result = inet_pton(AF_INET, group_str, &msg.im_dst);
  if (result <= 0) {
    vty_out(vty, "Bad group address %s: errno=%d: %s%s",
	    group_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  /* Source address */
  source_str = argv[3];
  result = inet_pton(AF_INET, source_str, &msg.im_src);
  if (result <= 0) {
    vty_out(vty, "Bad source address %s: errno=%d: %s%s",
	    source_str, errno, safe_strerror(errno), VTY_NEWLINE);
    return CMD_WARNING;
  }

  msg.im_mbz = 0; /* Must be zero */

  result = pim_mroute_msg(-1, (char *) &msg, sizeof(msg));
  if (result) {
    vty_out(vty, "pim_mroute_msg(len=%d) returned failure: %d%s",
	    sizeof(msg), result, VTY_NEWLINE);
    return CMD_WARNING;
  }

  return CMD_SUCCESS;
}

void pim_cmd_init()
{
  install_node (&pim_global_node, pim_global_config_write);       /* PIM_NODE */
  install_node (&interface_node, pim_interface_config_write); /* INTERFACE_NODE */

  install_element (CONFIG_NODE, &ip_multicast_routing_cmd);
  install_element (CONFIG_NODE, &no_ip_multicast_routing_cmd);
  install_element (CONFIG_NODE, &ip_ssmpingd_cmd);
  install_element (CONFIG_NODE, &no_ip_ssmpingd_cmd); 
#if 0
  install_element (CONFIG_NODE, &interface_cmd); /* from if.h */
#else
  install_element (CONFIG_NODE, &pim_interface_cmd);
#endif
  install_element (CONFIG_NODE, &no_interface_cmd); /* from if.h */

  install_default (INTERFACE_NODE);
  install_element (INTERFACE_NODE, &interface_ip_igmp_cmd);
  install_element (INTERFACE_NODE, &interface_no_ip_igmp_cmd); 
  install_element (INTERFACE_NODE, &interface_ip_igmp_join_cmd);
  install_element (INTERFACE_NODE, &interface_no_ip_igmp_join_cmd); 
  install_element (INTERFACE_NODE, &interface_ip_igmp_query_interval_cmd);
  install_element (INTERFACE_NODE, &interface_no_ip_igmp_query_interval_cmd); 
  install_element (INTERFACE_NODE, &interface_ip_igmp_query_max_response_time_cmd);
  install_element (INTERFACE_NODE, &interface_no_ip_igmp_query_max_response_time_cmd); 
  install_element (INTERFACE_NODE, &interface_ip_igmp_query_max_response_time_dsec_cmd);
  install_element (INTERFACE_NODE, &interface_no_ip_igmp_query_max_response_time_dsec_cmd); 
  install_element (INTERFACE_NODE, &interface_ip_pim_ssm_cmd);
  install_element (INTERFACE_NODE, &interface_no_ip_pim_ssm_cmd); 

  install_element (VIEW_NODE, &show_ip_igmp_interface_cmd);
  install_element (VIEW_NODE, &show_ip_igmp_parameters_cmd);
  install_element (VIEW_NODE, &show_ip_igmp_groups_cmd);
  install_element (VIEW_NODE, &show_ip_igmp_groups_retransmissions_cmd);
  install_element (VIEW_NODE, &show_ip_igmp_sources_cmd);
  install_element (VIEW_NODE, &show_ip_igmp_sources_retransmissions_cmd);
  install_element (VIEW_NODE, &show_ip_igmp_querier_cmd);
  install_element (VIEW_NODE, &show_ip_pim_assert_cmd);
  install_element (VIEW_NODE, &show_ip_pim_assert_internal_cmd);
  install_element (VIEW_NODE, &show_ip_pim_assert_metric_cmd);
  install_element (VIEW_NODE, &show_ip_pim_assert_winner_metric_cmd);
  install_element (VIEW_NODE, &show_ip_pim_dr_cmd);
  install_element (VIEW_NODE, &show_ip_pim_hello_cmd);
  install_element (VIEW_NODE, &show_ip_pim_interface_cmd);
  install_element (VIEW_NODE, &show_ip_pim_join_cmd);
  install_element (VIEW_NODE, &show_ip_pim_jp_override_interval_cmd);
  install_element (VIEW_NODE, &show_ip_pim_lan_prune_delay_cmd);
  install_element (VIEW_NODE, &show_ip_pim_local_membership_cmd);
  install_element (VIEW_NODE, &show_ip_pim_neighbor_cmd);
  install_element (VIEW_NODE, &show_ip_pim_rpf_cmd);
  install_element (VIEW_NODE, &show_ip_pim_secondary_cmd);
  install_element (VIEW_NODE, &show_ip_pim_upstream_cmd);
  install_element (VIEW_NODE, &show_ip_pim_upstream_join_desired_cmd);
  install_element (VIEW_NODE, &show_ip_pim_upstream_rpf_cmd);
  install_element (VIEW_NODE, &show_ip_multicast_cmd);
  install_element (VIEW_NODE, &show_ip_mroute_cmd);
  install_element (VIEW_NODE, &show_ip_mroute_count_cmd);
  install_element (VIEW_NODE, &show_ip_route_cmd);
  install_element (VIEW_NODE, &show_ip_ssmpingd_cmd);
  install_element (VIEW_NODE, &show_debugging_cmd);

  install_element (ENABLE_NODE, &clear_ip_interfaces_cmd);
  install_element (ENABLE_NODE, &clear_ip_igmp_interfaces_cmd);
  install_element (ENABLE_NODE, &clear_ip_pim_interfaces_cmd);

  install_element (ENABLE_NODE, &show_ip_igmp_interface_cmd);
  install_element (ENABLE_NODE, &show_ip_igmp_parameters_cmd);
  install_element (ENABLE_NODE, &show_ip_igmp_groups_cmd);
  install_element (ENABLE_NODE, &show_ip_igmp_groups_retransmissions_cmd);
  install_element (ENABLE_NODE, &show_ip_igmp_sources_cmd);
  install_element (ENABLE_NODE, &show_ip_igmp_sources_retransmissions_cmd);
  install_element (ENABLE_NODE, &show_ip_igmp_querier_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_address_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_assert_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_assert_internal_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_assert_metric_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_assert_winner_metric_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_dr_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_hello_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_interface_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_join_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_jp_override_interval_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_lan_prune_delay_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_local_membership_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_neighbor_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_rpf_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_secondary_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_upstream_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_upstream_join_desired_cmd);
  install_element (ENABLE_NODE, &show_ip_pim_upstream_rpf_cmd);
  install_element (ENABLE_NODE, &show_ip_multicast_cmd);
  install_element (ENABLE_NODE, &show_ip_mroute_cmd);
  install_element (ENABLE_NODE, &show_ip_mroute_count_cmd);
  install_element (ENABLE_NODE, &show_ip_route_cmd);
  install_element (ENABLE_NODE, &show_debugging_cmd);

  install_element (ENABLE_NODE, &test_igmp_receive_report_cmd);
  install_element (ENABLE_NODE, &test_pim_receive_assert_cmd);
  install_element (ENABLE_NODE, &test_pim_receive_hello_cmd);
  install_element (ENABLE_NODE, &test_pim_receive_join_cmd);
  install_element (ENABLE_NODE, &test_pim_receive_prune_cmd);
  install_element (ENABLE_NODE, &test_pim_receive_upcall_cmd);

  install_element (ENABLE_NODE, &debug_igmp_cmd);
  install_element (ENABLE_NODE, &no_debug_igmp_cmd);
  install_element (ENABLE_NODE, &undebug_igmp_cmd);
  install_element (ENABLE_NODE, &debug_igmp_events_cmd);
  install_element (ENABLE_NODE, &no_debug_igmp_events_cmd);
  install_element (ENABLE_NODE, &undebug_igmp_events_cmd);
  install_element (ENABLE_NODE, &debug_igmp_packets_cmd);
  install_element (ENABLE_NODE, &no_debug_igmp_packets_cmd);
  install_element (ENABLE_NODE, &undebug_igmp_packets_cmd);
  install_element (ENABLE_NODE, &debug_igmp_trace_cmd);
  install_element (ENABLE_NODE, &no_debug_igmp_trace_cmd);
  install_element (ENABLE_NODE, &undebug_igmp_trace_cmd);
  install_element (ENABLE_NODE, &debug_pim_cmd);
  install_element (ENABLE_NODE, &no_debug_pim_cmd);
  install_element (ENABLE_NODE, &undebug_pim_cmd);
  install_element (ENABLE_NODE, &debug_pim_events_cmd);
  install_element (ENABLE_NODE, &no_debug_pim_events_cmd);
  install_element (ENABLE_NODE, &undebug_pim_events_cmd);
  install_element (ENABLE_NODE, &debug_pim_packets_cmd);
  install_element (ENABLE_NODE, &no_debug_pim_packets_cmd);
  install_element (ENABLE_NODE, &undebug_pim_packets_cmd);
  install_element (ENABLE_NODE, &debug_pim_trace_cmd);
  install_element (ENABLE_NODE, &no_debug_pim_trace_cmd);
  install_element (ENABLE_NODE, &undebug_pim_trace_cmd);
  install_element (ENABLE_NODE, &debug_ssmpingd_cmd);
  install_element (ENABLE_NODE, &no_debug_ssmpingd_cmd);
  install_element (ENABLE_NODE, &undebug_ssmpingd_cmd);
  install_element (ENABLE_NODE, &debug_pim_zebra_cmd);
  install_element (ENABLE_NODE, &no_debug_pim_zebra_cmd);
  install_element (ENABLE_NODE, &undebug_pim_zebra_cmd);

  install_element (CONFIG_NODE, &debug_igmp_cmd);
  install_element (CONFIG_NODE, &no_debug_igmp_cmd);
  install_element (CONFIG_NODE, &undebug_igmp_cmd);
  install_element (CONFIG_NODE, &debug_igmp_events_cmd);
  install_element (CONFIG_NODE, &no_debug_igmp_events_cmd);
  install_element (CONFIG_NODE, &undebug_igmp_events_cmd);
  install_element (CONFIG_NODE, &debug_igmp_packets_cmd);
  install_element (CONFIG_NODE, &no_debug_igmp_packets_cmd);
  install_element (CONFIG_NODE, &undebug_igmp_packets_cmd);
  install_element (CONFIG_NODE, &debug_igmp_trace_cmd);
  install_element (CONFIG_NODE, &no_debug_igmp_trace_cmd);
  install_element (CONFIG_NODE, &undebug_igmp_trace_cmd);
  install_element (CONFIG_NODE, &debug_pim_cmd);
  install_element (CONFIG_NODE, &no_debug_pim_cmd);
  install_element (CONFIG_NODE, &undebug_pim_cmd);
  install_element (CONFIG_NODE, &debug_pim_events_cmd);
  install_element (CONFIG_NODE, &no_debug_pim_events_cmd);
  install_element (CONFIG_NODE, &undebug_pim_events_cmd);
  install_element (CONFIG_NODE, &debug_pim_packets_cmd);
  install_element (CONFIG_NODE, &no_debug_pim_packets_cmd);
  install_element (CONFIG_NODE, &undebug_pim_packets_cmd);
  install_element (CONFIG_NODE, &debug_pim_trace_cmd);
  install_element (CONFIG_NODE, &no_debug_pim_trace_cmd);
  install_element (CONFIG_NODE, &undebug_pim_trace_cmd);
  install_element (CONFIG_NODE, &debug_ssmpingd_cmd);
  install_element (CONFIG_NODE, &no_debug_ssmpingd_cmd);
  install_element (CONFIG_NODE, &undebug_ssmpingd_cmd);
  install_element (CONFIG_NODE, &debug_pim_zebra_cmd);
  install_element (CONFIG_NODE, &no_debug_pim_zebra_cmd);
  install_element (CONFIG_NODE, &undebug_pim_zebra_cmd);
}