[mirror_frr.git] / bgpd / bgp_mplsvpn.c

/* MPLS-VPN
 * Copyright (C) 2000 Kunihiro Ishiguro <kunihiro@zebra.org>
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra 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, or (at your option) any
 * later version.
 *
 * GNU Zebra 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
 */

#include <zebra.h>

#include "command.h"
#include "prefix.h"
#include "log.h"
#include "memory.h"
#include "stream.h"
#include "queue.h"
#include "filter.h"
#include "lib/json.h"

#include "bgpd/bgpd.h"
#include "bgpd/bgp_table.h"
#include "bgpd/bgp_route.h"
#include "bgpd/bgp_attr.h"
#include "bgpd/bgp_label.h"
#include "bgpd/bgp_mplsvpn.h"
#include "bgpd/bgp_packet.h"
#include "bgpd/bgp_vty.h"
#include "bgpd/bgp_vpn.h"

#if ENABLE_BGP_VNC
#include "bgpd/rfapi/rfapi_backend.h"
#endif

extern int
argv_find_and_parse_vpnvx(struct cmd_token **argv, int argc, int *index, afi_t *afi)
{
  int ret = 0;
  if (argv_find (argv, argc, "vpnv4", index))
    {
      ret = 1;
      if (afi)
        *afi = AFI_IP;
    }
  else if (argv_find (argv, argc, "vpnv6", index))
    {
      ret = 1;
      if (afi)
        *afi = AFI_IP6;
    }
   return ret;
}

u_int16_t
decode_rd_type (u_char *pnt)
{
  u_int16_t v;
  
  v = ((u_int16_t) *pnt++ << 8);
#if ENABLE_BGP_VNC
  /*
   * VNC L2 stores LHI in lower byte, so omit it
   */
  if (v != RD_TYPE_VNC_ETH)
    v |= (u_int16_t) *pnt;
#else                           /* duplicate code for clarity */
  v |= (u_int16_t) *pnt;
#endif

  return v;
}

void
encode_rd_type (u_int16_t v, u_char *pnt)
{
  *((u_int16_t *)pnt) = htons(v);
}

u_int32_t
decode_label (mpls_label_t *label_pnt)
{
  u_int32_t l;
  u_char *pnt = (u_char *) label_pnt;

  l = ((u_int32_t) *pnt++ << 12);
  l |= (u_int32_t) *pnt++ << 4;
  l |= (u_int32_t) ((*pnt & 0xf0) >> 4);
  return l;
}

void
encode_label(mpls_label_t label,
             mpls_label_t *label_pnt)
{
    u_char *pnt = (u_char *) label_pnt;
    if (pnt == NULL)
        return;
    *pnt++ = (label>>12) & 0xff;
    *pnt++ = (label>>4) & 0xff;
    *pnt++ = ((label<<4)+1) & 0xff; /* S=1 */
}

/* type == RD_TYPE_AS */
void
decode_rd_as (u_char *pnt, struct rd_as *rd_as)
{
  rd_as->as = (u_int16_t) *pnt++ << 8;
  rd_as->as |= (u_int16_t) *pnt++;
  
  rd_as->val = ((u_int32_t) *pnt++ << 24);
  rd_as->val |= ((u_int32_t) *pnt++ << 16);
  rd_as->val |= ((u_int32_t) *pnt++ << 8);
  rd_as->val |= (u_int32_t) *pnt;
}

/* type == RD_TYPE_AS4 */
void
decode_rd_as4 (u_char *pnt, struct rd_as *rd_as)
{
  rd_as->as  = (u_int32_t) *pnt++ << 24;
  rd_as->as |= (u_int32_t) *pnt++ << 16;
  rd_as->as |= (u_int32_t) *pnt++ << 8;
  rd_as->as |= (u_int32_t) *pnt++;

  rd_as->val  = ((u_int16_t) *pnt++ << 8);
  rd_as->val |= (u_int16_t) *pnt;
}

/* type == RD_TYPE_IP */
void
decode_rd_ip (u_char *pnt, struct rd_ip *rd_ip)
{
  memcpy (&rd_ip->ip, pnt, 4);
  pnt += 4;
  
  rd_ip->val = ((u_int16_t) *pnt++ << 8);
  rd_ip->val |= (u_int16_t) *pnt;
}

#if ENABLE_BGP_VNC
/* type == RD_TYPE_VNC_ETH */
void
decode_rd_vnc_eth (u_char *pnt, struct rd_vnc_eth *rd_vnc_eth)
{
  rd_vnc_eth->type = RD_TYPE_VNC_ETH;
  rd_vnc_eth->local_nve_id = pnt[1];
  memcpy (rd_vnc_eth->macaddr.octet, pnt + 2, ETHER_ADDR_LEN);
}
#endif

int
bgp_nlri_parse_vpn (struct peer *peer, struct attr *attr,
                    struct bgp_nlri *packet)
{
  u_char *pnt;
  u_char *lim;
  struct prefix p;
  int psize = 0;
  int prefixlen;
  u_int16_t type;
  struct rd_as rd_as;
  struct rd_ip rd_ip;
  struct prefix_rd prd;
  mpls_label_t label;
  afi_t afi;
  safi_t safi;
  int addpath_encoded;
  u_int32_t addpath_id;

  /* Check peer status. */
  if (peer->status != Established)
    return 0;
  
  /* Make prefix_rd */
  prd.family = AF_UNSPEC;
  prd.prefixlen = 64;

  pnt = packet->nlri;
  lim = pnt + packet->length;
  afi = packet->afi;
  safi = packet->safi;
  addpath_id = 0;

  addpath_encoded = (CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_RX_ADV) &&
                     CHECK_FLAG (peer->af_cap[afi][safi], PEER_CAP_ADDPATH_AF_TX_RCV));

#define VPN_PREFIXLEN_MIN_BYTES (3 + 8) /* label + RD */
  for (; pnt < lim; pnt += psize)
    {
      /* Clear prefix structure. */
      memset (&p, 0, sizeof (struct prefix));

      if (addpath_encoded)
        {

          /* When packet overflow occurs return immediately. */
          if (pnt + BGP_ADDPATH_ID_LEN > lim)
            return -1;

          addpath_id = ntohl(*((uint32_t*) pnt));
          pnt += BGP_ADDPATH_ID_LEN;
        }

      /* Fetch prefix length. */
      prefixlen = *pnt++;
      p.family = afi2family (packet->afi);
      psize = PSIZE (prefixlen);

      if (prefixlen < VPN_PREFIXLEN_MIN_BYTES*8)
	{
	  zlog_err ("%s [Error] Update packet error / VPN (prefix length %d less than VPN min length)",
	            peer->host, prefixlen);
	  return -1;
	}

      /* sanity check against packet data */
      if ((pnt + psize) > lim)
        {
          zlog_err ("%s [Error] Update packet error / VPN (prefix length %d exceeds packet size %u)",
                    peer->host,
                    prefixlen, (uint)(lim-pnt));
          return -1;
        }
      
      /* sanity check against storage for the IP address portion */
      if ((psize - VPN_PREFIXLEN_MIN_BYTES) > (ssize_t) sizeof(p.u))
        {
          zlog_err ("%s [Error] Update packet error / VPN (psize %d exceeds storage size %zu)",
                    peer->host,
                    prefixlen - VPN_PREFIXLEN_MIN_BYTES*8, sizeof(p.u));
          return -1;
        }
      
      /* Sanity check against max bitlen of the address family */
      if ((psize - VPN_PREFIXLEN_MIN_BYTES) > prefix_blen (&p))
        {
          zlog_err ("%s [Error] Update packet error / VPN (psize %d exceeds family (%u) max byte len %u)",
                    peer->host,
                    prefixlen - VPN_PREFIXLEN_MIN_BYTES*8, 
                    p.family, prefix_blen (&p));
          return -1;
        }
      
      /* Copy label to prefix. */
      memcpy(&label, pnt, BGP_LABEL_BYTES);
      bgp_set_valid_label(&label);

      /* Copy routing distinguisher to rd. */
      memcpy (&prd.val, pnt + BGP_LABEL_BYTES, 8);

      /* Decode RD type. */
      type = decode_rd_type (pnt + BGP_LABEL_BYTES);

      switch (type)
        {
        case RD_TYPE_AS:
          decode_rd_as (pnt + 5, &rd_as);
          break;

        case RD_TYPE_AS4:
          decode_rd_as4 (pnt + 5, &rd_as);
          break;

        case RD_TYPE_IP:
          decode_rd_ip (pnt + 5, &rd_ip);
          break;

#if ENABLE_BGP_VNC
	case RD_TYPE_VNC_ETH:
	    break;
#endif

	default:
	  zlog_err ("Unknown RD type %d", type);
          break;  /* just report */
      }

      p.prefixlen = prefixlen - VPN_PREFIXLEN_MIN_BYTES*8;/* exclude label & RD */
      memcpy (&p.u.prefix, pnt + VPN_PREFIXLEN_MIN_BYTES, 
              psize - VPN_PREFIXLEN_MIN_BYTES);

      if (attr)
        {
          bgp_update (peer, &p, addpath_id, attr, packet->afi, SAFI_MPLS_VPN,
                      ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, &label, 0, NULL);
        }
      else
        {
          bgp_withdraw (peer, &p, addpath_id, attr, packet->afi, SAFI_MPLS_VPN,
                        ZEBRA_ROUTE_BGP, BGP_ROUTE_NORMAL, &prd, &label, NULL);
        }
    }
  /* Packet length consistency check. */
  if (pnt != lim)
    {
      zlog_err ("%s [Error] Update packet error / VPN (%zu data remaining after parsing)",
                peer->host, lim - pnt);
      return -1;
    }

  return 0;
#undef VPN_PREFIXLEN_MIN_BYTES
}

int
str2prefix_rd (const char *str, struct prefix_rd *prd)
{
  int ret; /* ret of called functions */
  int lret; /* local ret, of this func */
  char *p;
  char *p2;
  struct stream *s = NULL;
  char *half = NULL;
  struct in_addr addr;

  s = stream_new (8);

  prd->family = AF_UNSPEC;
  prd->prefixlen = 64;

  lret = 0;
  p = strchr (str, ':');
  if (! p)
    goto out;

  if (! all_digit (p + 1))
    goto out;

  half = XMALLOC (MTYPE_TMP, (p - str) + 1);
  memcpy (half, str, (p - str));
  half[p - str] = '\0';

  p2 = strchr (str, '.');

  if (! p2)
    {
      unsigned long as_val;

      if (! all_digit (half))
        goto out;

      as_val = atol(half);
      if (as_val > 0xffff)
        {
          stream_putw (s, RD_TYPE_AS4);
          stream_putl (s, as_val);
          stream_putw (s, atol (p + 1));
        }
      else
        {
          stream_putw (s, RD_TYPE_AS);
          stream_putw (s, as_val);
          stream_putl (s, atol (p + 1));
        }
    }
  else
    {
      ret = inet_aton (half, &addr);
      if (! ret)
        goto out;

      stream_putw (s, RD_TYPE_IP);
      stream_put_in_addr (s, &addr);
      stream_putw (s, atol (p + 1));
    }
  memcpy (prd->val, s->data, 8);
  lret = 1;

out:
  if (s)
    stream_free (s);
  if (half)
    XFREE(MTYPE_TMP, half);
  return lret;
}

char *
prefix_rd2str (struct prefix_rd *prd, char *buf, size_t size)
{
  u_char *pnt;
  u_int16_t type;
  struct rd_as rd_as;
  struct rd_ip rd_ip;

  if (size < RD_ADDRSTRLEN)
    return NULL;

  pnt = prd->val;

  type = decode_rd_type (pnt);

  if (type == RD_TYPE_AS)
    {
      decode_rd_as (pnt + 2, &rd_as);
      snprintf (buf, size, "%u:%d", rd_as.as, rd_as.val);
      return buf;
    }
  else if (type == RD_TYPE_AS4)
    {
      decode_rd_as4 (pnt + 2, &rd_as);
      snprintf (buf, size, "%u:%d", rd_as.as, rd_as.val);
      return buf;
    }
  else if (type == RD_TYPE_IP)
    {
      decode_rd_ip (pnt + 2, &rd_ip);
      snprintf (buf, size, "%s:%d", inet_ntoa (rd_ip.ip), rd_ip.val);
      return buf;
    }
#if ENABLE_BGP_VNC
  else if (type == RD_TYPE_VNC_ETH)
    {
      snprintf(buf, size, "LHI:%d, %02x:%02x:%02x:%02x:%02x:%02x",
	    *(pnt+1),	/* LHI */
	    *(pnt+2),	/* MAC[0] */
	    *(pnt+3),
	    *(pnt+4),
	    *(pnt+5),
	    *(pnt+6),
	    *(pnt+7));

      return buf;
    }
#endif
  return NULL;
}

/* For testing purpose, static route of MPLS-VPN. */
DEFUN (vpnv4_network,
       vpnv4_network_cmd,
       "network A.B.C.D/M rd ASN:nn_or_IP-address:nn <tag|label> (0-1048575)",
       "Specify a network to announce via BGP\n"
       "IPv4 prefix\n"
       "Specify Route Distinguisher\n"
       "VPN Route Distinguisher\n"
       "VPN NLRI label (tag)\n"
       "VPN NLRI label (tag)\n"
       "Label value\n")
{
  int idx_ipv4_prefixlen = 1;
  int idx_ext_community = 3;
  int idx_label = 5;
  return bgp_static_set_safi (AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg, argv[idx_ext_community]->arg,
                              argv[idx_label]->arg, NULL, 0, NULL, NULL, NULL, NULL);
}

DEFUN (vpnv4_network_route_map,
       vpnv4_network_route_map_cmd,
       "network A.B.C.D/M rd ASN:nn_or_IP-address:nn <tag|label> (0-1048575) route-map WORD",
       "Specify a network to announce via BGP\n"
       "IPv4 prefix\n"
       "Specify Route Distinguisher\n"
       "VPN Route Distinguisher\n"
       "VPN NLRI label (tag)\n"
       "VPN NLRI label (tag)\n"
       "Label value\n"
       "route map\n"
       "route map name\n")
{
  int idx_ipv4_prefixlen = 1;
  int idx_ext_community = 3;
  int idx_label = 5;
  int idx_word_2 = 7;
  return bgp_static_set_safi (AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg, argv[idx_ext_community]->arg, argv[idx_label]->arg,
                              argv[idx_word_2]->arg, 0, NULL, NULL, NULL, NULL);
}

/* For testing purpose, static route of MPLS-VPN. */
DEFUN (no_vpnv4_network,
       no_vpnv4_network_cmd,
       "no network A.B.C.D/M rd ASN:nn_or_IP-address:nn <tag|label> (0-1048575)",
       NO_STR
       "Specify a network to announce via BGP\n"
       "IPv4 prefix\n"
       "Specify Route Distinguisher\n"
       "VPN Route Distinguisher\n"
       "VPN NLRI label (tag)\n"
       "VPN NLRI label (tag)\n"
       "Label value\n")
{
  int idx_ipv4_prefixlen = 2;
  int idx_ext_community = 4;
  int idx_label = 6;
  return bgp_static_unset_safi (AFI_IP, SAFI_MPLS_VPN, vty, argv[idx_ipv4_prefixlen]->arg,
                                argv[idx_ext_community]->arg, argv[idx_label]->arg,
                                0, NULL, NULL, NULL);
}

DEFUN (vpnv6_network,
       vpnv6_network_cmd,
       "network X:X::X:X/M rd ASN:nn_or_IP-address:nn <tag|label> (0-1048575) [route-map WORD]",
       "Specify a network to announce via BGP\n"
       "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n"
       "Specify Route Distinguisher\n"
       "VPN Route Distinguisher\n"
       "VPN NLRI label (tag)\n"
       "VPN NLRI label (tag)\n"
       "Label value\n"
       "route map\n"
       "route map name\n")
{
  int idx_ipv6_prefix = 1;
  int idx_ext_community = 3;
  int idx_label = 5;
  int idx_word_2 = 7;
  if (argc == 8)
    return bgp_static_set_safi (AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, argv[idx_ext_community]->arg, argv[idx_label]->arg, argv[idx_word_2]->arg, 0, NULL, NULL, NULL, NULL);
  else
    return bgp_static_set_safi (AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, argv[idx_ext_community]->arg, argv[idx_label]->arg, NULL, 0, NULL, NULL, NULL, NULL);
}

/* For testing purpose, static route of MPLS-VPN. */
DEFUN (no_vpnv6_network,
       no_vpnv6_network_cmd,
       "no network X:X::X:X/M rd ASN:nn_or_IP-address:nn <tag|label> (0-1048575)",
       NO_STR
       "Specify a network to announce via BGP\n"
       "IPv6 prefix <network>/<length>, e.g., 3ffe::/16\n"
       "Specify Route Distinguisher\n"
       "VPN Route Distinguisher\n"
       "VPN NLRI label (tag)\n"
       "VPN NLRI label (tag)\n"
       "Label value\n")
{
  int idx_ipv6_prefix = 2;
  int idx_ext_community = 4;
  int idx_label = 6;
  return bgp_static_unset_safi (AFI_IP6, SAFI_MPLS_VPN, vty, argv[idx_ipv6_prefix]->arg, argv[idx_ext_community]->arg, argv[idx_label]->arg, 0, NULL, NULL, NULL);
}

int
bgp_show_mpls_vpn (struct vty *vty, afi_t afi, struct prefix_rd *prd,
		   enum bgp_show_type type, void *output_arg, int tags, u_char use_json)
{
  struct bgp *bgp;
  struct bgp_table *table;
  struct bgp_node *rn;
  struct bgp_node *rm;
  struct bgp_info *ri;
  int rd_header;
  int header = 1;
  unsigned long output_count = 0;
  unsigned long total_count  = 0;
  json_object *json = NULL;
  json_object *json_mroute = NULL;
  json_object *json_nroute = NULL;
  json_object *json_array = NULL;
  json_object *json_scode = NULL;
  json_object *json_ocode = NULL;

  bgp = bgp_get_default ();
  if (bgp == NULL)
    {
      if (!use_json)
        vty_out (vty, "No BGP process is configured\n");
      return CMD_WARNING;
    }

  if (use_json)
    {
      json_scode = json_object_new_object();
      json_ocode = json_object_new_object();
      json = json_object_new_object();
      json_mroute = json_object_new_object();
      json_nroute = json_object_new_object();

      json_object_string_add(json_scode, "suppressed", "s");
      json_object_string_add(json_scode, "damped", "d");
      json_object_string_add(json_scode, "history", "h");
      json_object_string_add(json_scode, "valid", "*");
      json_object_string_add(json_scode, "best", ">");
      json_object_string_add(json_scode, "internal", "i");

      json_object_string_add(json_ocode, "igp", "i");
      json_object_string_add(json_ocode, "egp", "e");
      json_object_string_add(json_ocode, "incomplete", "?");
    }

  if ((afi != AFI_IP) && (afi != AFI_IP6))
    {
      vty_out (vty, "Afi %d not supported\n", afi);
      return CMD_WARNING;
    }

  for (rn = bgp_table_top (bgp->rib[afi][SAFI_MPLS_VPN]); rn; rn = bgp_route_next (rn))
    {
      if (prd && memcmp (rn->p.u.val, prd->val, 8) != 0)
	continue;

      if ((table = rn->info) != NULL)
	{
	  rd_header = 1;

	  for (rm = bgp_table_top (table); rm; rm = bgp_route_next (rm))
	    {
	      total_count++;
              if (use_json)
                json_array = json_object_new_array();
              else
                json_array = NULL;

              for (ri = rm->info; ri; ri = ri->next)
	        {
		  if (type == bgp_show_type_neighbor)
		    {
		      union sockunion *su = output_arg;

		      if (ri->peer->su_remote == NULL || ! sockunion_same(ri->peer->su_remote, su))
		        continue;
                    }
		  if (header)
		    {
                      if (use_json)
                        {
                          if (!tags)
                            {
                              json_object_int_add(json, "bgpTableVersion", 0);
                              json_object_string_add(json, "bgpLocalRouterId", inet_ntoa (bgp->router_id));
                              json_object_object_add(json, "bgpStatusCodes", json_scode);
                              json_object_object_add(json, "bgpOriginCodes", json_ocode);
                            }
                        }
                      else
                        {
		          if (tags)
		            vty_out (vty, V4_HEADER_TAG);
		          else
		            {
		              vty_out (vty, "BGP table version is 0, local router ID is %s\n",
		                       inet_ntoa(bgp->router_id));
		              vty_out (vty,
                                         "Status codes: s suppressed, d damped, h history, * valid, > best, i - internal\n");
		              vty_out (vty, "Origin codes: i - IGP, e - EGP, ? - incomplete%s\n",
		                       VTYNL);
		              vty_out (vty, V4_HEADER);
		            }
                        }
		      header = 0;
		    }

		  if (rd_header)
		    {
		      u_int16_t type;
		      struct rd_as rd_as;
		      struct rd_ip rd_ip = {0};
#if ENABLE_BGP_VNC
                      struct rd_vnc_eth rd_vnc_eth = {0};
#endif
		      u_char *pnt;

		      pnt = rn->p.u.val;

	              /* Decode RD type. */
		      type = decode_rd_type (pnt);
		      /* Decode RD value. */
		      if (type == RD_TYPE_AS)
		        decode_rd_as (pnt + 2, &rd_as);
		      else if (type == RD_TYPE_AS4)
		        decode_rd_as4 (pnt + 2, &rd_as);
		      else if (type == RD_TYPE_IP)
		        decode_rd_ip (pnt + 2, &rd_ip);
#if ENABLE_BGP_VNC
                      else if (type == RD_TYPE_VNC_ETH)
                        decode_rd_vnc_eth (pnt, &rd_vnc_eth);
#endif

                      if (use_json)
                        {
                          char buffer[BUFSIZ];
                          if (type == RD_TYPE_AS || type == RD_TYPE_AS4)
                            sprintf (buffer, "%u:%d", rd_as.as, rd_as.val);
                          else if (type == RD_TYPE_IP)
                            sprintf (buffer, "%s:%d", inet_ntoa (rd_ip.ip), rd_ip.val);
                          json_object_string_add(json_nroute, "routeDistinguisher", buffer);
                        }
                      else
                        {
		          vty_out (vty, "Route Distinguisher: ");

		          if (type == RD_TYPE_AS || type == RD_TYPE_AS4)
		            vty_out (vty, "%u:%d", rd_as.as, rd_as.val);
		          else if (type == RD_TYPE_IP)
		            vty_out (vty, "%s:%d", inet_ntoa (rd_ip.ip), rd_ip.val);
#if ENABLE_BGP_VNC
                          else if (type == RD_TYPE_VNC_ETH)
                            vty_out (vty, "%u:%02x:%02x:%02x:%02x:%02x:%02x", 
                                     rd_vnc_eth.local_nve_id, 
                                     rd_vnc_eth.macaddr.octet[0],
                                     rd_vnc_eth.macaddr.octet[1],
                                     rd_vnc_eth.macaddr.octet[2],
                                     rd_vnc_eth.macaddr.octet[3],
                                     rd_vnc_eth.macaddr.octet[4],
                                     rd_vnc_eth.macaddr.octet[5]);
#endif
		          vty_out (vty, VTYNL);
                        }
		      rd_header = 0;
		    }
	          if (tags)
		    route_vty_out_tag (vty, &rm->p, ri, 0, SAFI_MPLS_VPN, json_array);
	          else
		    route_vty_out (vty, &rm->p, ri, 0, SAFI_MPLS_VPN, json_array);
		  output_count++;
                }

              if (use_json)
                {
                  struct prefix *p;
                  char buf_a[BUFSIZ];
                  char buf_b[BUFSIZ];
                  p = &rm->p;
                  sprintf(buf_a, "%s/%d", inet_ntop (p->family, &p->u.prefix, buf_b, BUFSIZ), p->prefixlen);
                  json_object_object_add(json_mroute, buf_a, json_array);
                }
	    }

          if (use_json)
            {
              struct prefix *p;
              char buf_a[BUFSIZ];
              char buf_b[BUFSIZ];
              p = &rn->p;
              sprintf(buf_a, "%s/%d", inet_ntop (p->family, &p->u.prefix, buf_b, BUFSIZ), p->prefixlen);
              json_object_object_add(json_nroute, buf_a, json_mroute);
            }
        }
    }

  if (use_json)
    {
      json_object_object_add(json, "routes", json_nroute);
      vty_out (vty, "%s\n",
                 json_object_to_json_string_ext(json, JSON_C_TO_STRING_PRETTY));
      json_object_free(json);
    }
  else
    {
      if (output_count == 0)
	vty_out (vty, "No prefixes displayed, %ld exist\n", total_count);
      else
	vty_out (vty, "%sDisplayed %ld routes and %ld total paths\n",
		 VTYNL, output_count, total_count);
    }

  return CMD_SUCCESS;
}

DEFUN (show_bgp_ip_vpn_all_rd,
       show_bgp_ip_vpn_all_rd_cmd,
       "show bgp "BGP_AFI_CMD_STR" vpn all [rd ASN:nn_or_IP-address:nn] [json]",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display VPN NLRI specific information\n"
       "Display information for a route distinguisher\n"
       "VPN Route Distinguisher\n"
       JSON_STR)
{
  int idx_rd = 5;
  int ret;
  struct prefix_rd prd;
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_afi (argv, argc, &idx, &afi))
    {
      if (argc >= 7 &&  argv[idx_rd]->arg)
        {
          ret = str2prefix_rd (argv[idx_rd]->arg, &prd);
          if (! ret)
            {
              vty_out (vty, "%% Malformed Route Distinguisher\n");
              return CMD_WARNING;
            }
          return bgp_show_mpls_vpn (vty, afi, &prd, bgp_show_type_normal, NULL, 0, use_json (argc, argv));
        }
      else
        {
          return bgp_show_mpls_vpn (vty, afi, NULL, bgp_show_type_normal, NULL, 0, use_json (argc, argv));
        }
    }
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_rd,
       show_ip_bgp_vpn_rd_cmd,
       "show [ip] bgp "BGP_AFI_CMD_STR" vpn rd ASN:nn_or_IP-address:nn",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_AFI_HELP_STR
       "Address Family modifier\n"
       "Display information for a route distinguisher\n"
       "VPN Route Distinguisher\n")
{
  int idx_ext_community = argc-1;
  int ret;
  struct prefix_rd prd;
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    {
      ret = str2prefix_rd (argv[idx_ext_community]->arg, &prd);
      if (! ret)
        {
          vty_out (vty, "%% Malformed Route Distinguisher\n");
          return CMD_WARNING;
        }
      return bgp_show_mpls_vpn (vty, afi, &prd, bgp_show_type_normal, NULL, 0, 0);
    }
  return CMD_SUCCESS;
 }

#ifdef KEEP_OLD_VPN_COMMANDS
DEFUN (show_ip_bgp_vpn_all,
       show_ip_bgp_vpn_all_cmd,
       "show [ip] bgp <vpnv4|vpnv6>",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR)
{
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    return bgp_show_mpls_vpn (vty, afi, NULL, bgp_show_type_normal, NULL, 0, 0);
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_all_tags,
       show_ip_bgp_vpn_all_tags_cmd,
       "show [ip] bgp <vpnv4|vpnv6> all tags",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display information about all VPNv4/VPNV6 NLRIs\n"
       "Display BGP tags for prefixes\n")
{
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    return bgp_show_mpls_vpn (vty, afi, NULL, bgp_show_type_normal, NULL,  1, 0);
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_rd_tags,
       show_ip_bgp_vpn_rd_tags_cmd,
       "show [ip] bgp <vpnv4|vpnv6> rd ASN:nn_or_IP-address:nn tags",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display information for a route distinguisher\n"
       "VPN Route Distinguisher\n"
       "Display BGP tags for prefixes\n")
{
  int idx_ext_community = 5;
  int ret;
  struct prefix_rd prd;
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    {
      ret = str2prefix_rd (argv[idx_ext_community]->arg, &prd);
      if (! ret)
        {
          vty_out (vty, "%% Malformed Route Distinguisher\n");
          return CMD_WARNING;
        }
      return bgp_show_mpls_vpn (vty, afi, &prd, bgp_show_type_normal, NULL, 1, 0);
    }
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_all_neighbor_routes,
       show_ip_bgp_vpn_all_neighbor_routes_cmd,
       "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D routes [json]",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display information about all VPNv4/VPNv6 NLRIs\n"
       "Detailed information on TCP and BGP neighbor connections\n"
       "Neighbor to display information about\n"
       "Display routes learned from neighbor\n"
       JSON_STR)
{
  int idx_ipv4 = 6;
  union sockunion su;
  struct peer *peer;
  int ret;
  u_char uj = use_json(argc, argv);
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    {
      ret = str2sockunion (argv[idx_ipv4]->arg, &su);
      if (ret < 0)
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "Malformed address");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "Malformed address: %s\n", argv[idx_ipv4]->arg);
          return CMD_WARNING;
        }

      peer = peer_lookup (NULL, &su);
      if (! peer || ! peer->afc[afi][SAFI_MPLS_VPN])
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "No such neighbor or address family");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "%% No such neighbor or address family\n");
          return CMD_WARNING;
        }

      return bgp_show_mpls_vpn (vty, afi, NULL, bgp_show_type_neighbor, &su, 0, uj);
    }
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_rd_neighbor_routes,
       show_ip_bgp_vpn_rd_neighbor_routes_cmd,
       "show [ip] bgp <vpnv4|vpnv6> rd ASN:nn_or_IP-address:nn neighbors A.B.C.D routes [json]",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display information for a route distinguisher\n"
       "VPN Route Distinguisher\n"
       "Detailed information on TCP and BGP neighbor connections\n"
       "Neighbor to display information about\n"
       "Display routes learned from neighbor\n"
       JSON_STR)
{
  int idx_ext_community = 5;
  int idx_ipv4 = 7;
  int ret;
  union sockunion su;
  struct peer *peer;
  struct prefix_rd prd;
  u_char uj = use_json(argc, argv);
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    {
      ret = str2prefix_rd (argv[idx_ext_community]->arg, &prd);
      if (! ret)
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "Malformed Route Distinguisher");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "%% Malformed Route Distinguisher\n");
          return CMD_WARNING;
        }

      ret = str2sockunion (argv[idx_ipv4]->arg, &su);
      if (ret < 0)
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "Malformed address");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "Malformed address: %s\n",
                       argv[idx_ext_community]->arg);
          return CMD_WARNING;
        }

      peer = peer_lookup (NULL, &su);
      if (! peer || ! peer->afc[afi][SAFI_MPLS_VPN])
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "No such neighbor or address family");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "%% No such neighbor or address family\n");
          return CMD_WARNING;
        }

      return bgp_show_mpls_vpn (vty, afi, &prd, bgp_show_type_neighbor, &su, 0, uj);
    }
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_all_neighbor_advertised_routes,
       show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd,
       "show [ip] bgp <vpnv4|vpnv6> all neighbors A.B.C.D advertised-routes [json]",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display information about all VPNv4/VPNv6 NLRIs\n"
       "Detailed information on TCP and BGP neighbor connections\n"
       "Neighbor to display information about\n"
       "Display the routes advertised to a BGP neighbor\n"
       JSON_STR)
{
  int idx_ipv4 = 6;
  int ret;
  struct peer *peer;
  union sockunion su;
  u_char uj = use_json(argc, argv);
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    {
      ret = str2sockunion (argv[idx_ipv4]->arg, &su);
      if (ret < 0)
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "Malformed address");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "Malformed address: %s\n", argv[idx_ipv4]->arg);
          return CMD_WARNING;
        }
      peer = peer_lookup (NULL, &su);
      if (! peer || ! peer->afc[afi][SAFI_MPLS_VPN])
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "No such neighbor or address family");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "%% No such neighbor or address family\n");
          return CMD_WARNING;
        }
      return show_adj_route_vpn (vty, peer, NULL, AFI_IP, SAFI_MPLS_VPN, uj);
    }
  return CMD_SUCCESS;
}

DEFUN (show_ip_bgp_vpn_rd_neighbor_advertised_routes,
       show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd,
       "show [ip] bgp <vpnv4|vpnv6> rd ASN:nn_or_IP-address:nn neighbors A.B.C.D advertised-routes [json]",
       SHOW_STR
       IP_STR
       BGP_STR
       BGP_VPNVX_HELP_STR
       "Display information for a route distinguisher\n"
       "VPN Route Distinguisher\n"
       "Detailed information on TCP and BGP neighbor connections\n"
       "Neighbor to display information about\n"
       "Display the routes advertised to a BGP neighbor\n"
       JSON_STR)
{
  int idx_ext_community = 5;
  int idx_ipv4 = 7;
  int ret;
  struct peer *peer;
  struct prefix_rd prd;
  union sockunion su;
  u_char uj = use_json(argc, argv);
  afi_t afi;
  int idx = 0;

  if (argv_find_and_parse_vpnvx (argv, argc, &idx, &afi))
    {
      ret = str2sockunion (argv[idx_ipv4]->arg, &su);
      if (ret < 0)
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "Malformed address");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "Malformed address: %s\n",
                       argv[idx_ext_community]->arg);
          return CMD_WARNING;
        }
      peer = peer_lookup (NULL, &su);
      if (! peer || ! peer->afc[afi][SAFI_MPLS_VPN])
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "No such neighbor or address family");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "%% No such neighbor or address family\n");
          return CMD_WARNING;
        }

      ret = str2prefix_rd (argv[idx_ext_community]->arg, &prd);
      if (! ret)
        {
          if (uj)
            {
              json_object *json_no = NULL;
              json_no = json_object_new_object();
              json_object_string_add(json_no, "warning", "Malformed Route Distinguisher");
              vty_out (vty, "%s\n", json_object_to_json_string(json_no));
              json_object_free(json_no);
            }
          else
            vty_out (vty, "%% Malformed Route Distinguisher\n");
          return CMD_WARNING;
        }

      return show_adj_route_vpn (vty, peer, &prd, AFI_IP, SAFI_MPLS_VPN, uj);
    }
  return CMD_SUCCESS;
}
#endif /* KEEP_OLD_VPN_COMMANDS */

void
bgp_mplsvpn_init (void)
{
  install_element (BGP_VPNV4_NODE, &vpnv4_network_cmd);
  install_element (BGP_VPNV4_NODE, &vpnv4_network_route_map_cmd);
  install_element (BGP_VPNV4_NODE, &no_vpnv4_network_cmd);

  install_element (BGP_VPNV6_NODE, &vpnv6_network_cmd);
  install_element (BGP_VPNV6_NODE, &no_vpnv6_network_cmd);

  install_element (VIEW_NODE, &show_bgp_ip_vpn_all_rd_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_rd_cmd);
#ifdef KEEP_OLD_VPN_COMMANDS
  install_element (VIEW_NODE, &show_ip_bgp_vpn_all_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_all_tags_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_rd_tags_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_all_neighbor_routes_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_rd_neighbor_routes_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_all_neighbor_advertised_routes_cmd);
  install_element (VIEW_NODE, &show_ip_bgp_vpn_rd_neighbor_advertised_routes_cmd);
#endif /* KEEP_OLD_VPN_COMMANDS */
}