VPP-362 Implement dumping of LISP adjacencies
[vpp.git] / vnet / vnet / lisp-cp / control.c
index 9b86da5..8dc4207 100644 (file)
  * limitations under the License.
  */
 
+#include <vlibmemory/api.h>
 #include <vnet/lisp-cp/control.h>
 #include <vnet/lisp-cp/packets.h>
 #include <vnet/lisp-cp/lisp_msg_serdes.h>
 #include <vnet/lisp-gpe/lisp_gpe.h>
+#include <vnet/lisp-gpe/lisp_gpe_fwd_entry.h>
+#include <vnet/lisp-gpe/lisp_gpe_tenant.h>
+#include <vnet/fib/fib_entry.h>
+#include <vnet/fib/fib_table.h>
+
+typedef struct
+{
+  u8 is_resend;
+  gid_address_t seid;
+  gid_address_t deid;
+  u8 smr_invoked;
+} map_request_args_t;
+
+u8
+vnet_lisp_get_map_request_mode (void)
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  return lcm->map_request_mode;
+}
+
+static int
+queue_map_request (gid_address_t * seid, gid_address_t * deid,
+                  u8 smr_invoked, u8 is_resend);
 
 ip_interface_address_t *
-ip_interface_get_first_interface_address (ip_lookup_main_t *lm, u32 sw_if_index,
-                                          u8 loop)
+ip_interface_get_first_interface_address (ip_lookup_main_t * lm,
+                                         u32 sw_if_index, u8 loop)
 {
   vnet_main_t *vnm = vnet_get_main ();
-  vnet_sw_interface_t * swif = vnet_get_sw_interface (vnm, sw_if_index);
+  vnet_sw_interface_t *swif = vnet_get_sw_interface (vnm, sw_if_index);
   if (loop && swif->flags & VNET_SW_INTERFACE_FLAG_UNNUMBERED)
     sw_if_index = swif->unnumbered_sw_if_index;
   u32 ia =
-      (vec_len((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
-          vec_elt((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
-          (u32) ~0;
-  return pool_elt_at_index((lm)->if_address_pool, ia);
+    (vec_len ((lm)->if_address_pool_index_by_sw_if_index) > (sw_if_index)) ?
+    vec_elt ((lm)->if_address_pool_index_by_sw_if_index, (sw_if_index)) :
+    (u32) ~ 0;
+  return pool_elt_at_index ((lm)->if_address_pool, ia);
 }
 
 void *
 ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
-                                u8 version)
+                               u8 version)
 {
-  ip_interface_address_t * ia;
+  ip_interface_address_t *ia;
 
   ia = ip_interface_get_first_interface_address (lm, sw_if_index, 1);
   if (!ia)
@@ -47,10 +71,10 @@ ip_interface_get_first_address (ip_lookup_main_t * lm, u32 sw_if_index,
 
 int
 ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
-                                   u8 version, ip_address_t * result)
+                                  u8 version, ip_address_t * result)
 {
-  ip_lookup_main_t * lm;
-  void * addr;
+  ip_lookup_main_t *lm;
+  void *addr;
 
   lm = (version == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
   addr = ip_interface_get_first_address (lm, sw_if_index, version);
@@ -61,37 +85,36 @@ ip_interface_get_first_ip_address (lisp_cp_main_t * lcm, u32 sw_if_index,
   return 1;
 }
 
-static u32
-ip_fib_lookup_with_table (lisp_cp_main_t * lcm, u32 fib_index,
-                          ip_address_t * dst)
+/**
+ * convert from a LISP address to a FIB prefix
+ */
+void
+ip_address_to_fib_prefix (const ip_address_t * addr, fib_prefix_t * prefix)
 {
-  if (ip_addr_version (dst) == IP4)
-      return ip4_fib_lookup_with_table (lcm->im4, fib_index, &ip_addr_v4(dst),
-                                        0);
+  if (addr->version == IP4)
+    {
+      prefix->fp_len = 32;
+      prefix->fp_proto = FIB_PROTOCOL_IP4;
+      memset (&prefix->fp_addr.pad, 0, sizeof (prefix->fp_addr.pad));
+      memcpy (&prefix->fp_addr.ip4, &addr->ip, sizeof (prefix->fp_addr.ip4));
+    }
   else
-      return ip6_fib_lookup_with_table (lcm->im6, fib_index, &ip_addr_v6(dst));
+    {
+      prefix->fp_len = 128;
+      prefix->fp_proto = FIB_PROTOCOL_IP6;
+      memcpy (&prefix->fp_addr.ip6, &addr->ip, sizeof (prefix->fp_addr.ip6));
+    }
 }
 
-u32
-ip_fib_get_egress_iface_for_dst_with_lm (lisp_cp_main_t * lcm,
-                                         ip_address_t * dst,
-                                         ip_lookup_main_t * lm)
+/**
+ * convert from a LISP to a FIB prefix
+ */
+void
+ip_prefix_to_fib_prefix (const ip_prefix_t * ip_prefix,
+                        fib_prefix_t * fib_prefix)
 {
-  u32 adj_index;
-  ip_adjacency_t * adj;
-
-  adj_index = ip_fib_lookup_with_table (lcm, 0, dst);
-  adj = ip_get_adjacency (lm, adj_index);
-
-  if (adj == 0)
-    return ~0;
-
-  /* we only want outgoing routes */
-  if (adj->lookup_next_index != IP_LOOKUP_NEXT_ARP
-      && adj->lookup_next_index != IP_LOOKUP_NEXT_REWRITE)
-    return ~0;
-
-  return adj->rewrite_header.sw_if_index;
+  ip_address_to_fib_prefix (&ip_prefix->addr, fib_prefix);
+  fib_prefix->fp_len = ip_prefix->len;
 }
 
 /**
@@ -101,12 +124,14 @@ ip_fib_get_egress_iface_for_dst_with_lm (lisp_cp_main_t * lcm,
 u32
 ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
 {
-  ip_lookup_main_t * lm;
+  fib_node_index_t fei;
+  fib_prefix_t prefix;
 
-  lm = ip_addr_version (dst) == IP4 ?
-      &lcm->im4->lookup_main : &lcm->im6->lookup_main;
+  ip_address_to_fib_prefix (dst, &prefix);
 
-  return ip_fib_get_egress_iface_for_dst_with_lm (lcm, dst, lm);
+  fei = fib_table_lookup (0, &prefix);
+
+  return (fib_entry_get_resolving_interface (fei));
 }
 
 /**
@@ -115,21 +140,21 @@ ip_fib_get_egress_iface_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst)
  */
 int
 ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
-                                    ip_address_t * result)
+                                   ip_address_t * result)
 {
   u32 si;
-  ip_lookup_main_t * lm;
-  void * addr = 0;
+  ip_lookup_main_t *lm;
+  void *addr = 0;
   u8 ipver;
 
-  ASSERT(result != 0);
+  ASSERT (result != 0);
 
-  ipver = ip_addr_version(dst);
+  ipver = ip_addr_version (dst);
 
   lm = (ipver == IP4) ? &lcm->im4->lookup_main : &lcm->im6->lookup_main;
-  si = ip_fib_get_egress_iface_for_dst_with_lm (lcm, dst, lm);
+  si = ip_fib_get_egress_iface_for_dst (lcm, dst);
 
-  if ((u32) ~0 == si)
+  if ((u32) ~ 0 == si)
     return 0;
 
   /* find the first ip address */
@@ -144,61 +169,42 @@ ip_fib_get_first_egress_ip_for_dst (lisp_cp_main_t * lcm, ip_address_t * dst,
 static int
 dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
 {
-  uword * dp_table, * intf;
-  vnet_lisp_gpe_add_del_iface_args_t _ai, *ai = &_ai;
+  uword *dp_table;
 
   if (!is_l2)
     {
-      dp_table = hash_get(lcm->table_id_by_vni, vni);
+      dp_table = hash_get (lcm->table_id_by_vni, vni);
 
       if (!dp_table)
-        {
-          clib_warning("vni %d not associated to a vrf!", vni);
-          return VNET_API_ERROR_INVALID_VALUE;
-        }
+       {
+         clib_warning ("vni %d not associated to a vrf!", vni);
+         return VNET_API_ERROR_INVALID_VALUE;
+       }
     }
   else
     {
-      dp_table = hash_get(lcm->bd_id_by_vni, vni);
+      dp_table = hash_get (lcm->bd_id_by_vni, vni);
       if (!dp_table)
-        {
-          clib_warning("vni %d not associated to a bridge domain!", vni);
-          return VNET_API_ERROR_INVALID_VALUE;
-        }
+       {
+         clib_warning ("vni %d not associated to a bridge domain!", vni);
+         return VNET_API_ERROR_INVALID_VALUE;
+       }
     }
 
-  intf = hash_get(is_l2 ? lcm->l2_dp_intf_by_vni :lcm->dp_intf_by_vni, vni);
-
   /* enable/disable data-plane interface */
   if (is_add)
     {
-      /* create interface */
-      if (!intf)
-        {
-          ai->is_add = 1;
-          ai->vni = vni;
-          ai->is_l2 = is_l2;
-          ai->dp_table = dp_table[0];
-
-          vnet_lisp_gpe_add_del_iface (ai, 0);
-
-          /* keep track of vnis for which interfaces have been created */
-          hash_set(lcm->dp_intf_by_vni, vni, 1);
-        }
+      if (is_l2)
+       lisp_gpe_tenant_l2_iface_add_or_lock (vni, dp_table[0]);
+      else
+       lisp_gpe_tenant_l3_iface_add_or_lock (vni, dp_table[0]);
     }
   else
     {
-      if (intf == 0)
-        {
-          clib_warning("interface for vni %d doesn't exist!", vni);
-          return VNET_API_ERROR_INVALID_VALUE;
-        }
-
-      ai->is_add = 0;
-      ai->vni = vni;
-      ai->dp_table = dp_table[0];
-      vnet_lisp_gpe_add_del_iface (ai, 0);
-      hash_unset(lcm->dp_intf_by_vni, vni);
+      if (is_l2)
+       lisp_gpe_tenant_l2_iface_unlock (vni);
+      else
+       lisp_gpe_tenant_l3_iface_unlock (vni);
     }
 
   return 0;
@@ -207,30 +213,30 @@ dp_add_del_iface (lisp_cp_main_t * lcm, u32 vni, u8 is_l2, u8 is_add)
 static void
 dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
 {
-  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
-  fwd_entry_t * fe = 0;
-  uword * feip = 0;
-  memset(a, 0, sizeof(*a));
+  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+  fwd_entry_t *fe = 0;
+  uword *feip = 0;
+  memset (a, 0, sizeof (*a));
 
-  feip = hash_get(lcm->fwd_entry_by_mapping_index, dst_map_index);
+  feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
   if (!feip)
     return;
 
-  fe = pool_elt_at_index(lcm->fwd_entry_pool, feip[0]);
+  fe = pool_elt_at_index (lcm->fwd_entry_pool, feip[0]);
 
   /* delete dp fwd entry */
   u32 sw_if_index;
   a->is_add = 0;
-  a->rmt_loc = fe->dst_loc;
-  a->lcl_loc = fe->src_loc;
-  a->vni = gid_address_vni(&a->rmt_eid);
-  gid_address_copy(&a->rmt_eid, &fe->deid);
+  a->locator_pairs = fe->locator_pairs;
+  a->vni = gid_address_vni (&fe->reid);
+  gid_address_copy (&a->rmt_eid, &fe->reid);
 
   vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
 
   /* delete entry in fwd table */
-  hash_unset(lcm->fwd_entry_by_mapping_index, dst_map_index);
-  pool_put(lcm->fwd_entry_pool, fe);
+  hash_unset (lcm->fwd_entry_by_mapping_index, dst_map_index);
+  vec_free (fe->locator_pairs);
+  pool_put (lcm->fwd_entry_pool, fe);
 }
 
 /**
@@ -239,134 +245,185 @@ dp_del_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
  *
  */
 static u32
-get_locator_pair (lisp_cp_main_t* lcm, mapping_t * lcl_map, mapping_t * rmt_map,
-                  ip_address_t * lcl_loc, ip_address_t * rmt_loc)
-{
-  u32 i, minp = ~0, limitp = 0, li, check_index = 0, done = 0, esi;
-  locator_set_t * rmt_ls, * lcl_ls;
-  ip_address_t _lcl, * lcl = &_lcl;
-  locator_t * l, * rmt = 0;
-  uword * checked = 0;
-
-  rmt_ls = pool_elt_at_index(lcm->locator_set_pool, rmt_map->locator_set_index);
-  lcl_ls = pool_elt_at_index(lcm->locator_set_pool, lcl_map->locator_set_index);
-
-  if (!rmt_ls || vec_len(rmt_ls->locator_indices) == 0)
+get_locator_pairs (lisp_cp_main_t * lcm, mapping_t * lcl_map,
+                  mapping_t * rmt_map, locator_pair_t ** locator_pairs)
+{
+  u32 i, limitp = 0, li, found = 0, esi;
+  locator_set_t *rmt_ls, *lcl_ls;
+  ip_address_t _lcl_addr, *lcl_addr = &_lcl_addr;
+  locator_t *lp, *rmt = 0;
+  uword *checked = 0;
+  locator_pair_t pair;
+
+  rmt_ls =
+    pool_elt_at_index (lcm->locator_set_pool, rmt_map->locator_set_index);
+  lcl_ls =
+    pool_elt_at_index (lcm->locator_set_pool, lcl_map->locator_set_index);
+
+  if (!rmt_ls || vec_len (rmt_ls->locator_indices) == 0)
     return 0;
 
-  while (!done)
+  while (1)
     {
       rmt = 0;
 
       /* find unvisited remote locator with best priority */
-      for (i = 0; i < vec_len(rmt_ls->locator_indices); i++)
-        {
-          if (0 != hash_get(checked, i))
-            continue;
+      for (i = 0; i < vec_len (rmt_ls->locator_indices); i++)
+       {
+         if (0 != hash_get (checked, i))
+           continue;
+
+         li = vec_elt (rmt_ls->locator_indices, i);
+         lp = pool_elt_at_index (lcm->locator_pool, li);
+
+         /* we don't support non-IP locators for now */
+         if (gid_address_type (&lp->address) != GID_ADDR_IP_PREFIX)
+           continue;
+
+         if ((found && lp->priority == limitp)
+             || (!found && lp->priority >= limitp))
+           {
+             rmt = lp;
+
+             /* don't search for locators with lower priority and don't
+              * check this locator again*/
+             limitp = lp->priority;
+             hash_set (checked, i, 1);
+             break;
+           }
+       }
+      /* check if a local locator with a route to remote locator exists */
+      if (rmt != 0)
+       {
+         /* find egress sw_if_index for rmt locator */
+         esi =
+           ip_fib_get_egress_iface_for_dst (lcm,
+                                            &gid_address_ip (&rmt->address));
+         if ((u32) ~ 0 == esi)
+           continue;
+
+         for (i = 0; i < vec_len (lcl_ls->locator_indices); i++)
+           {
+             li = vec_elt (lcl_ls->locator_indices, i);
+             locator_t *sl = pool_elt_at_index (lcm->locator_pool, li);
+
+             /* found local locator with the needed sw_if_index */
+             if (sl->sw_if_index == esi)
+               {
+                 /* and it has an address */
+                 if (0 == ip_interface_get_first_ip_address (lcm,
+                                                             sl->sw_if_index,
+                                                             gid_address_ip_version
+                                                             (&rmt->address),
+                                                             lcl_addr))
+                   continue;
+
+                 memset (&pair, 0, sizeof (pair));
+                 ip_address_copy (&pair.rmt_loc,
+                                  &gid_address_ip (&rmt->address));
+                 ip_address_copy (&pair.lcl_loc, lcl_addr);
+                 pair.weight = rmt->weight;
+                 vec_add1 (locator_pairs[0], pair);
+                 found = 1;
+               }
+           }
+       }
+      else
+       break;
+    }
 
-          li = vec_elt(rmt_ls->locator_indices, i);
-          l = pool_elt_at_index(lcm->locator_pool, li);
+  hash_free (checked);
+  return found;
+}
 
-          /* we don't support non-IP locators for now */
-          if (gid_address_type(&l->address) != GID_ADDR_IP_PREFIX)
-            continue;
+static void
+gid_address_sd_to_flat (gid_address_t * dst, gid_address_t * src,
+                       fid_address_t * fid)
+{
+  ASSERT (GID_ADDR_SRC_DST == gid_address_type (src));
 
-          if (l->priority < minp && l->priority >= limitp)
-            {
-              minp = l->priority;
-              rmt = l;
-              check_index = i;
-            }
-        }
-      /* check if a local locator with a route to remote locator exists */
-      if (rmt != 0)
-        {
-          esi = ip_fib_get_egress_iface_for_dst (
-              lcm, &gid_address_ip(&rmt->address));
-          if ((u32) ~0 == esi)
-            continue;
+  dst[0] = src[0];
 
-          for (i = 0; i < vec_len(lcl_ls->locator_indices); i++)
-            {
-              li = vec_elt (lcl_ls->locator_indices, i);
-              locator_t * sl = pool_elt_at_index (lcm->locator_pool, li);
-
-              /* found local locator */
-              if (sl->sw_if_index == esi)
-                {
-                  if (0 == ip_interface_get_first_ip_address (lcm,
-                             sl->sw_if_index,
-                             gid_address_ip_version(&rmt->address), lcl))
-                    continue;
-
-                  ip_address_copy(rmt_loc, &gid_address_ip(&rmt->address));
-                  ip_address_copy(lcl_loc, lcl);
-                  done = 2;
-                }
-            }
-
-          /* skip this remote locator in next searches */
-          limitp = minp;
-          hash_set(checked, check_index, 1);
-        }
-      else
-        done = 1;
+  switch (fid_addr_type (fid))
+    {
+    case FID_ADDR_IP_PREF:
+      gid_address_type (dst) = GID_ADDR_IP_PREFIX;
+      gid_address_ippref (dst) = fid_addr_ippref (fid);
+      break;
+    case FID_ADDR_MAC:
+      gid_address_type (dst) = GID_ADDR_MAC;
+      mac_copy (gid_address_mac (dst), fid_addr_mac (fid));
+      break;
+    default:
+      clib_warning ("Unsupported fid type %d!", fid_addr_type (fid));
+      break;
     }
-  hash_free(checked);
-  return (done == 2) ? 1 : 0;
 }
 
 static void
-dp_add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index)
+dp_add_fwd_entry (lisp_cp_main_t * lcm, u32 src_map_index, u32 dst_map_index)
 {
-  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, * a = &_a;
-  mapping_t * src_map, * dst_map;
+  vnet_lisp_gpe_add_del_fwd_entry_args_t _a, *a = &_a;
+  mapping_t *src_map, *dst_map;
   u32 sw_if_index;
-  uword * feip = 0, * dpid;
-  fwd_entry_tfe;
-  u8 type;
+  uword *feip = 0, *dpid;
+  fwd_entry_t *fe;
+  u8 type, is_src_dst = 0;
 
-  memset (a, 0, sizeof(*a));
+  memset (a, 0, sizeof (*a));
 
   /* remove entry if it already exists */
   feip = hash_get (lcm->fwd_entry_by_mapping_index, dst_map_index);
   if (feip)
     dp_del_fwd_entry (lcm, src_map_index, dst_map_index);
 
-  src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
+  if (lcm->lisp_pitr)
+    src_map = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
+  else
+    src_map = pool_elt_at_index (lcm->mapping_pool, src_map_index);
   dst_map = pool_elt_at_index (lcm->mapping_pool, dst_map_index);
 
   /* insert data plane forwarding entry */
   a->is_add = 1;
 
-  gid_address_copy (&a->rmt_eid, &dst_map->eid);
-  a->vni = gid_address_vni(&a->rmt_eid);
+  if (GID_ADDR_SRC_DST == gid_address_type (&dst_map->eid))
+    {
+      gid_address_sd_to_flat (&a->rmt_eid, &dst_map->eid,
+                             &gid_address_sd_dst (&dst_map->eid));
+      gid_address_sd_to_flat (&a->lcl_eid, &dst_map->eid,
+                             &gid_address_sd_src (&dst_map->eid));
+      is_src_dst = 1;
+    }
+  else
+    gid_address_copy (&a->rmt_eid, &dst_map->eid);
+
+  a->vni = gid_address_vni (&a->rmt_eid);
 
   /* get vrf or bd_index associated to vni */
-  type = gid_address_type(&dst_map->eid);
+  type = gid_address_type (&a->rmt_eid);
   if (GID_ADDR_IP_PREFIX == type)
     {
-      dpid = hash_get(lcm->table_id_by_vni, a->vni);
+      dpid = hash_get (lcm->table_id_by_vni, a->vni);
       if (!dpid)
-        {
-          clib_warning("vni %d not associated to a vrf!", a->vni);
-          return;
-        }
+       {
+         clib_warning ("vni %d not associated to a vrf!", a->vni);
+         return;
+       }
       a->table_id = dpid[0];
     }
   else if (GID_ADDR_MAC == type)
     {
-      dpid = hash_get(lcm->bd_id_by_vni, a->vni);
+      dpid = hash_get (lcm->bd_id_by_vni, a->vni);
       if (!dpid)
-        {
-          clib_warning("vni %d not associated to a bridge domain !", a->vni);
-          return;
-        }
+       {
+         clib_warning ("vni %d not associated to a bridge domain !", a->vni);
+         return;
+       }
       a->bd_id = dpid[0];
     }
 
   /* find best locator pair that 1) verifies LISP policy 2) are connected */
-  if (0 == get_locator_pair (lcm, src_map, dst_map, &a->lcl_loc, &a->rmt_loc))
+  if (0 == get_locator_pairs (lcm, src_map, dst_map, &a->locator_pairs))
     {
       /* negative entry */
       a->is_negative = 1;
@@ -374,110 +431,193 @@ dp_add_fwd_entry (lisp_cp_main_t* lcm, u32 src_map_index, u32 dst_map_index)
     }
 
   /* TODO remove */
-  u8 ipver = ip_prefix_version(&gid_address_ippref(&a->rmt_eid));
+  u8 ipver = ip_prefix_version (&gid_address_ippref (&a->rmt_eid));
   a->decap_next_index = (ipver == IP4) ?
-          LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT;
+    LISP_GPE_INPUT_NEXT_IP4_INPUT : LISP_GPE_INPUT_NEXT_IP6_INPUT;
 
   vnet_lisp_gpe_add_del_fwd_entry (a, &sw_if_index);
 
   /* add tunnel to fwd entry table XXX check return value from DP insertion */
   pool_get (lcm->fwd_entry_pool, fe);
-  fe->dst_loc = a->rmt_loc;
-  fe->src_loc = a->lcl_loc;
-  gid_address_copy (&fe->deid, &a->rmt_eid);
+  fe->locator_pairs = a->locator_pairs;
+  gid_address_copy (&fe->reid, &a->rmt_eid);
+  gid_address_copy (&fe->leid, &src_map->eid);
+  fe->is_src_dst = is_src_dst;
   hash_set (lcm->fwd_entry_by_mapping_index, dst_map_index,
-            fe - lcm->fwd_entry_pool);
+           fe - lcm->fwd_entry_pool);
 }
 
+/**
+ * Returns vector of adjacencies.
+ *
+ * The caller must free the vector returned by this function.
+ *
+ * @param vni virtual network identifier
+ * @return vector of adjacencies
+ */
+lisp_adjacency_t *
+vnet_lisp_adjacencies_get_by_vni (u32 vni)
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  fwd_entry_t *fwd;
+  lisp_adjacency_t *adjs = 0, adj;
+
+  /* *INDENT-OFF* */
+  pool_foreach(fwd, lcm->fwd_entry_pool,
+  ({
+    if (gid_address_vni (&fwd->reid) != vni)
+      continue;
+
+    gid_address_copy (&adj.reid, &fwd->reid);
+    gid_address_copy (&adj.leid, &fwd->leid);
+    vec_add1 (adjs, adj);
+  }));
+  /* *INDENT-ON* */
+
+  return adjs;
+}
+
+static clib_error_t *
+lisp_show_adjacencies_command_fn (vlib_main_t * vm,
+                                 unformat_input_t * input,
+                                 vlib_cli_command_t * cmd)
+{
+  lisp_adjacency_t *adjs, *adj;
+  vlib_cli_output (vm, "%s %40s\n", "leid", "reid");
+  unformat_input_t _line_input, *line_input = &_line_input;
+  u32 vni = ~0;
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
+
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (line_input, "vni %d", &vni))
+       ;
+      else
+       {
+         vlib_cli_output (vm, "parse error: '%U'",
+                          format_unformat_error, line_input);
+         return 0;
+       }
+    }
+
+  if (~0 == vni)
+    {
+      vlib_cli_output (vm, "error: no vni specified!");
+      return 0;
+    }
+
+  adjs = vnet_lisp_adjacencies_get_by_vni (vni);
+
+  vec_foreach (adj, adjs)
+  {
+    vlib_cli_output (vm, "%U %40U\n", format_gid_address, &adj->leid,
+                    format_gid_address, &adj->reid);
+  }
+  vec_free (adjs);
+
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_show_adjacencies_command) = {
+    .path = "show lisp adjacencies",
+    .short_help = "show lisp adjacencies",
+    .function = lisp_show_adjacencies_command_fn,
+};
+/* *INDENT-ON* */
+
 /**
  * Add/remove mapping to/from map-cache. Overwriting not allowed.
  */
 int
 vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
-                             u32 * map_index_result)
+                            u32 * map_index_result)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  u32 mi, * map_indexp, map_index, i;
-  mapping_t * m, * old_map;
-  u32 ** eid_indexes;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  u32 mi, *map_indexp, map_index, i;
+  mapping_t *m, *old_map;
+  u32 **eid_indexes;
 
   mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &a->eid);
   old_map = mi != ~0 ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
   if (a->is_add)
     {
       /* TODO check if overwriting and take appropriate actions */
-      if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid,
-                                                     &a->eid))
-        {
-          clib_warning ("eid %U found in the eid-table", format_gid_address,
-                       &a->eid);
-          return VNET_API_ERROR_VALUE_EXIST;
-        }
-
-      pool_get(lcm->mapping_pool, m);
+      if (mi != GID_LOOKUP_MISS && !gid_address_cmp (&old_map->eid, &a->eid))
+       {
+         clib_warning ("eid %U found in the eid-table", format_gid_address,
+                       &a->eid);
+         return VNET_API_ERROR_VALUE_EXIST;
+       }
+
+      pool_get (lcm->mapping_pool, m);
       gid_address_copy (&m->eid, &a->eid);
       m->locator_set_index = a->locator_set_index;
       m->ttl = a->ttl;
       m->action = a->action;
       m->local = a->local;
+      m->is_static = a->is_static;
 
       map_index = m - lcm->mapping_pool;
       gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, map_index,
-                              1);
+                             1);
 
-      if (pool_is_free_index(lcm->locator_set_pool, a->locator_set_index))
-        {
-          clib_warning("Locator set with index %d doesn't exist",
-                       a->locator_set_index);
-          return VNET_API_ERROR_INVALID_VALUE;
-        }
+      if (pool_is_free_index (lcm->locator_set_pool, a->locator_set_index))
+       {
+         clib_warning ("Locator set with index %d doesn't exist",
+                       a->locator_set_index);
+         return VNET_API_ERROR_INVALID_VALUE;
+       }
 
       /* add eid to list of eids supported by locator-set */
       vec_validate (lcm->locator_set_to_eids, a->locator_set_index);
-      eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids,
-                                     a->locator_set_index);
-      vec_add1(eid_indexes[0], map_index);
+      eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
+                                     a->locator_set_index);
+      vec_add1 (eid_indexes[0], map_index);
 
       if (a->local)
-        {
-          /* mark as local */
-          vec_add1(lcm->local_mappings_indexes, map_index);
-        }
+       {
+         /* mark as local */
+         vec_add1 (lcm->local_mappings_indexes, map_index);
+       }
       map_index_result[0] = map_index;
     }
   else
     {
       if (mi == GID_LOOKUP_MISS)
-        {
-          clib_warning("eid %U not found in the eid-table", format_gid_address,
-                       &a->eid);
-          return VNET_API_ERROR_INVALID_VALUE;
-        }
+       {
+         clib_warning ("eid %U not found in the eid-table",
+                       format_gid_address, &a->eid);
+         return VNET_API_ERROR_INVALID_VALUE;
+       }
 
       /* clear locator-set to eids binding */
-      eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids,
-                                     a->locator_set_index);
-      for (i = 0; i < vec_len(eid_indexes[0]); i++)
-        {
-          map_indexp = vec_elt_at_index(eid_indexes[0], i);
-          if (map_indexp[0] == mi)
-              break;
-        }
-      vec_del1(eid_indexes[0], i);
+      eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids,
+                                     a->locator_set_index);
+      for (i = 0; i < vec_len (eid_indexes[0]); i++)
+       {
+         map_indexp = vec_elt_at_index (eid_indexes[0], i);
+         if (map_indexp[0] == mi)
+           break;
+       }
+      vec_del1 (eid_indexes[0], i);
 
       /* remove local mark if needed */
-      m = pool_elt_at_index(lcm->mapping_pool, mi);
+      m = pool_elt_at_index (lcm->mapping_pool, mi);
       if (m->local)
-        {
-          u32 k, * lm_indexp;
-          for (k = 0; k < vec_len(lcm->local_mappings_indexes); k++)
-            {
-              lm_indexp = vec_elt_at_index(lcm->local_mappings_indexes, k);
-              if (lm_indexp[0] == mi)
-                break;
-            }
-          vec_del1(lcm->local_mappings_indexes, k);
-        }
+       {
+         u32 k, *lm_indexp;
+         for (k = 0; k < vec_len (lcm->local_mappings_indexes); k++)
+           {
+             lm_indexp = vec_elt_at_index (lcm->local_mappings_indexes, k);
+             if (lm_indexp[0] == mi)
+               break;
+           }
+         vec_del1 (lcm->local_mappings_indexes, k);
+       }
 
       /* remove mapping from dictionary */
       gid_dictionary_add_del (&lcm->mapping_index_by_gid, &a->eid, 0, 0);
@@ -493,13 +633,13 @@ vnet_lisp_map_cache_add_del (vnet_lisp_add_del_mapping_args_t * a,
  */
 int
 vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
-                                 u32 * map_index_result)
+                                u32 * map_index_result)
 {
-  uword * dp_table = 0;
+  uword *dp_table = 0;
   u32 vni;
   u8 type;
 
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
 
   if (vnet_lisp_enable_disable_status () == 0)
     {
@@ -507,17 +647,17 @@ vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
       return VNET_API_ERROR_LISP_DISABLED;
     }
 
-  vni = gid_address_vni(&a->eid);
-  type = gid_address_type(&a->eid);
+  vni = gid_address_vni (&a->eid);
+  type = gid_address_type (&a->eid);
   if (GID_ADDR_IP_PREFIX == type)
-    dp_table = hash_get(lcm->table_id_by_vni, vni);
+    dp_table = hash_get (lcm->table_id_by_vni, vni);
   else if (GID_ADDR_MAC == type)
-    dp_table = hash_get(lcm->bd_id_by_vni, vni);
+    dp_table = hash_get (lcm->bd_id_by_vni, vni);
 
   if (!dp_table)
     {
-      clib_warning("vni %d not associated to a %s!", vni,
-                   GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
+      clib_warning ("vni %d not associated to a %s!", vni,
+                   GID_ADDR_IP_PREFIX == type ? "vrf" : "bd");
       return VNET_API_ERROR_INVALID_VALUE;
     }
 
@@ -527,18 +667,18 @@ vnet_lisp_add_del_local_mapping (vnet_lisp_add_del_mapping_args_t * a,
 
 static clib_error_t *
 lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                                   vlib_cli_command_t * cmd)
+                                  vlib_cli_command_t * cmd)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  unformat_input_t _line_input, * line_input = &_line_input;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1;
   gid_address_t eid;
-  gid_address_t * eids = 0;
-  clib_error_t * error = 0;
-  u8 * locator_set_name = 0;
+  gid_address_t *eids = 0;
+  clib_error_t *error = 0;
+  u8 *locator_set_name = 0;
   u32 locator_set_index = 0, map_index = 0;
-  uword * p;
-  vnet_lisp_add_del_mapping_args_t _a, * a = &_a;
+  uword *p;
+  vnet_lisp_add_del_mapping_args_t _a, *a = &_a;
   int rv = 0;
   u32 vni = 0;
 
@@ -546,75 +686,78 @@ lisp_add_del_local_eid_command_fn (vlib_main_t * vm, unformat_input_t * input,
   memset (a, 0, sizeof (*a));
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "add"))
-        is_add = 1;
+       is_add = 1;
       else if (unformat (line_input, "del"))
-        is_add = 0;
+       is_add = 0;
       else if (unformat (line_input, "eid %U", unformat_gid_address, &eid))
-        ;
+       ;
       else if (unformat (line_input, "vni %d", &vni))
-        gid_address_vni (&eid) = vni;
+       gid_address_vni (&eid) = vni;
       else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name))
-        {
-          p = hash_get_mem(lcm->locator_set_index_by_name, locator_set_name);
-          if (!p)
-            {
-              error = clib_error_return(0, "locator-set %s doesn't exist",
-                                        locator_set_name);
-              goto done;
-            }
-          locator_set_index = p[0];
-        }
+       {
+         p = hash_get_mem (lcm->locator_set_index_by_name, locator_set_name);
+         if (!p)
+           {
+             error = clib_error_return (0, "locator-set %s doesn't exist",
+                                        locator_set_name);
+             goto done;
+           }
+         locator_set_index = p[0];
+       }
       else
-        {
-          error = unformat_parse_error(line_input);
-          goto done;
-        }
+       {
+         error = unformat_parse_error (line_input);
+         goto done;
+       }
     }
   /* XXX treat batch configuration */
 
-  if (GID_ADDR_SRC_DST == gid_address_type(&eid))
+  if (GID_ADDR_SRC_DST == gid_address_type (&eid))
     {
-      error = clib_error_return(0, "src/dst is not supported for local EIDs!");
+      error =
+       clib_error_return (0, "src/dst is not supported for local EIDs!");
       goto done;
     }
 
-  gid_address_copy(&a->eid, &eid);
+  gid_address_copy (&a->eid, &eid);
   a->is_add = is_add;
   a->locator_set_index = locator_set_index;
   a->local = 1;
 
   rv = vnet_lisp_add_del_local_mapping (a, &map_index);
   if (0 != rv)
-   {
-      error = clib_error_return(0, "failed to %s local mapping!",
-                                is_add ? "add" : "delete");
-   }
- done:
-  vec_free(eids);
+    {
+      error = clib_error_return (0, "failed to %s local mapping!",
+                                is_add ? "add" : "delete");
+    }
+done:
+  vec_free (eids);
   if (locator_set_name)
     vec_free (locator_set_name);
   gid_address_free (&a->eid);
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_add_del_local_eid_command) = {
     .path = "lisp eid-table",
     .short_help = "lisp eid-table add/del [vni <vni>] eid <eid> "
       "locator-set <locator-set>",
     .function = lisp_add_del_local_eid_command_fn,
 };
+/* *INDENT-ON* */
 
 int
 vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
-  uword * dp_idp, * vnip, ** dp_table_by_vni, ** vni_by_dp_table;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  uword *dp_idp, *vnip, **dp_table_by_vni, **vni_by_dp_table;
 
   if (vnet_lisp_enable_disable_status () == 0)
     {
@@ -637,11 +780,11 @@ vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
   if (is_add)
     {
       if (dp_idp || vnip)
-        {
-          clib_warning ("vni %d or vrf %d already used in vrf/vni "
-                        "mapping!", vni, dp_id);
-          return -1;
-        }
+       {
+         clib_warning ("vni %d or vrf %d already used in vrf/vni "
+                       "mapping!", vni, dp_id);
+         return -1;
+       }
       hash_set (dp_table_by_vni[0], vni, dp_id);
       hash_set (vni_by_dp_table[0], dp_id, vni);
 
@@ -651,11 +794,11 @@ vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
   else
     {
       if (!dp_idp || !vnip)
-        {
-          clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
-                        "mapping!", vni, dp_id);
-          return -1;
-        }
+       {
+         clib_warning ("vni %d or vrf %d not used in any vrf/vni! "
+                       "mapping!", vni, dp_id);
+         return -1;
+       }
       hash_unset (dp_table_by_vni[0], vni);
       hash_unset (vni_by_dp_table[0], dp_id);
 
@@ -668,63 +811,64 @@ vnet_lisp_eid_table_map (u32 vni, u32 dp_id, u8 is_l2, u8 is_add)
 
 static clib_error_t *
 lisp_eid_table_map_command_fn (vlib_main_t * vm,
-                               unformat_input_t * input,
-                               vlib_cli_command_t * cmd)
+                              unformat_input_t * input,
+                              vlib_cli_command_t * cmd)
 {
   u8 is_add = 1, is_l2 = 0;
   u32 vni = 0, dp_id = 0;
-  unformat_input_t _line_input, * line_input = &_line_input;
+  unformat_input_t _line_input, *line_input = &_line_input;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "del"))
-        is_add = 0;
+       is_add = 0;
       else if (unformat (line_input, "vni %d", &vni))
-        ;
+       ;
       else if (unformat (line_input, "vrf %d", &dp_id))
-        ;
+       ;
       else if (unformat (line_input, "bd %d", &dp_id))
-        is_l2 = 1;
+       is_l2 = 1;
       else
-        {
-          return unformat_parse_error (line_input);
-        }
+       {
+         return unformat_parse_error (line_input);
+       }
     }
   vnet_lisp_eid_table_map (vni, dp_id, is_l2, is_add);
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_eid_table_map_command) = {
     .path = "lisp eid-table map",
     .short_help = "lisp eid-table map [del] vni <vni> vrf <vrf> | bd <bdi>",
     .function = lisp_eid_table_map_command_fn,
 };
-
+/* *INDENT-ON* */
 
 /* return 0 if the two locator sets are identical 1 otherwise */
 static u8
-compare_locators (lisp_cp_main_t *lcm, u32 * old_ls_indexes,
-                  locator_t * new_locators)
+compare_locators (lisp_cp_main_t * lcm, u32 * old_ls_indexes,
+                 locator_t * new_locators)
 {
   u32 i, old_li;
-  locator_t * old_loc, * new_loc;
+  locator_t *old_loc, *new_loc;
 
-  if (vec_len (old_ls_indexes) != vec_len(new_locators))
+  if (vec_len (old_ls_indexes) != vec_len (new_locators))
     return 1;
 
-  for (i = 0; i < vec_len(new_locators); i++)
+  for (i = 0; i < vec_len (new_locators); i++)
     {
-      old_li = vec_elt(old_ls_indexes, i);
-      old_loc = pool_elt_at_index(lcm->locator_pool, old_li);
+      old_li = vec_elt (old_ls_indexes, i);
+      old_loc = pool_elt_at_index (lcm->locator_pool, old_li);
 
-      new_loc = vec_elt_at_index(new_locators, i);
+      new_loc = vec_elt_at_index (new_locators, i);
 
       if (locator_cmp (old_loc, new_loc))
-        return 1;
+       return 1;
     }
   return 0;
 }
@@ -738,20 +882,22 @@ compare_locators (lisp_cp_main_t *lcm, u32 * old_ls_indexes,
  * @param is_add add mapping if non-zero, delete otherwise
  * @param res_map_index the map-index that was created/updated/removed. It is
  *                      set to ~0 if no action is taken.
+ * @param is_static used for distinguishing between statically learned
+                    remote mappings and mappings obtained from MR
  * @return return code
  */
 int
 vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
-                           u8 authoritative, u32 ttl, u8 is_add,
-                           u32 * res_map_index)
+                          u8 authoritative, u32 ttl, u8 is_add, u8 is_static,
+                          u32 * res_map_index)
 {
-  vnet_lisp_add_del_mapping_args_t _m_args, * m_args = &_m_args;
-  vnet_lisp_add_del_locator_set_args_t _ls_args, * ls_args = &_ls_args;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  vnet_lisp_add_del_mapping_args_t _m_args, *m_args = &_m_args;
+  vnet_lisp_add_del_locator_set_args_t _ls_args, *ls_args = &_ls_args;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
   u32 mi, ls_index = 0, dst_map_index;
-  mapping_t * old_map;
+  mapping_t *old_map;
 
-  if (vnet_lisp_enable_disable_status() == 0)
+  if (vnet_lisp_enable_disable_status () == 0)
     {
       clib_warning ("LISP is disabled!");
       return VNET_API_ERROR_LISP_DISABLED;
@@ -766,61 +912,71 @@ vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
   ls_args->locators = rlocs;
 
   mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, eid);
-  old_map = ((u32) ~0 != mi) ? pool_elt_at_index(lcm->mapping_pool, mi) : 0;
+  old_map = ((u32) ~ 0 != mi) ? pool_elt_at_index (lcm->mapping_pool, mi) : 0;
 
   if (is_add)
     {
       /* overwrite: if mapping already exists, decide if locators should be
        * updated and be done */
       if (old_map && gid_address_cmp (&old_map->eid, eid) == 0)
-        {
-          locator_set_t * old_ls;
-
-          /* update mapping attributes */
-          old_map->action = action;
-          old_map->authoritative = authoritative;
-          old_map->ttl = ttl;
-
-          old_ls = pool_elt_at_index(lcm->locator_set_pool,
-                                     old_map->locator_set_index);
-          if (compare_locators (lcm, old_ls->locator_indices,
-                                ls_args->locators))
-            {
-              /* set locator-set index to overwrite */
-              ls_args->is_add = 1;
-              ls_args->index = old_map->locator_set_index;
-              vnet_lisp_add_del_locator_set (ls_args, 0);
-              if (res_map_index)
-                res_map_index[0] = mi;
-            }
-        }
+       {
+         if (!is_static && (old_map->is_static || old_map->local))
+           {
+             /* do not overwrite local or static remote mappings */
+             clib_warning ("mapping %U rejected due to collision with local "
+                           "or static remote mapping!", format_gid_address,
+                           &eid);
+             return 0;
+           }
+
+         locator_set_t *old_ls;
+
+         /* update mapping attributes */
+         old_map->action = action;
+         old_map->authoritative = authoritative;
+         old_map->ttl = ttl;
+
+         old_ls = pool_elt_at_index (lcm->locator_set_pool,
+                                     old_map->locator_set_index);
+         if (compare_locators (lcm, old_ls->locator_indices,
+                               ls_args->locators))
+           {
+             /* set locator-set index to overwrite */
+             ls_args->is_add = 1;
+             ls_args->index = old_map->locator_set_index;
+             vnet_lisp_add_del_locator_set (ls_args, 0);
+             if (res_map_index)
+               res_map_index[0] = mi;
+           }
+       }
       /* new mapping */
       else
-        {
-          ls_args->is_add = 1;
-          ls_args->index = ~0;
+       {
+         ls_args->is_add = 1;
+         ls_args->index = ~0;
 
-          vnet_lisp_add_del_locator_set (ls_args, &ls_index);
+         vnet_lisp_add_del_locator_set (ls_args, &ls_index);
 
-          /* add mapping */
-          gid_address_copy (&m_args->eid, eid);
-          m_args->is_add = 1;
-          m_args->action = action;
-          m_args->locator_set_index = ls_index;
-          vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
+         /* add mapping */
+         gid_address_copy (&m_args->eid, eid);
+         m_args->is_add = 1;
+         m_args->action = action;
+         m_args->locator_set_index = ls_index;
+         m_args->is_static = is_static;
+         vnet_lisp_map_cache_add_del (m_args, &dst_map_index);
 
-          if (res_map_index)
-            res_map_index[0] = dst_map_index;
-        }
+         if (res_map_index)
+           res_map_index[0] = dst_map_index;
+       }
     }
   else
     {
       if (old_map == 0 || gid_address_cmp (&old_map->eid, eid) != 0)
-        {
-          clib_warning("cannot delete mapping for eid %U", format_gid_address,
-                       eid);
-          return -1;
-        }
+       {
+         clib_warning ("cannot delete mapping for eid %U",
+                       format_gid_address, eid);
+         return -1;
+       }
 
       m_args->is_add = 0;
       gid_address_copy (&m_args->eid, eid);
@@ -836,7 +992,7 @@ vnet_lisp_add_del_mapping (gid_address_t * eid, locator_t * rlocs, u8 action,
 
       /* return old mapping index */
       if (res_map_index)
-        res_map_index[0] = mi;
+       res_map_index[0] = mi;
     }
 
   /* success */
@@ -847,39 +1003,41 @@ int
 vnet_lisp_clear_all_remote_adjacencies (void)
 {
   int rv = 0;
-  u32 mi, * map_indices = 0, * map_indexp;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
-  vnet_lisp_add_del_mapping_args_t _dm_args, * dm_args = &_dm_args;
-  vnet_lisp_add_del_locator_set_args_t _ls, * ls = &_ls;
+  u32 mi, *map_indices = 0, *map_indexp;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  vnet_lisp_add_del_mapping_args_t _dm_args, *dm_args = &_dm_args;
+  vnet_lisp_add_del_locator_set_args_t _ls, *ls = &_ls;
 
+  /* *INDENT-OFF* */
   pool_foreach_index (mi, lcm->mapping_pool,
-    ({
-      vec_add1 (map_indices, mi);
-    }));
+  ({
+    vec_add1 (map_indices, mi);
+  }));
+  /* *INDENT-ON* */
 
   vec_foreach (map_indexp, map_indices)
-    {
-      mapping_t * map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
-      if (!map->local)
-        {
-          dp_del_fwd_entry (lcm, 0, map_indexp[0]);
-
-          dm_args->is_add = 0;
-          gid_address_copy (&dm_args->eid, &map->eid);
-          dm_args->locator_set_index = map->locator_set_index;
-
-          /* delete mapping associated to fwd entry */
-          vnet_lisp_map_cache_add_del (dm_args, 0);
-
-          ls->is_add = 0;
-          ls->local = 0;
-          ls->index = map->locator_set_index;
-          /* delete locator set */
-          rv = vnet_lisp_add_del_locator_set (ls, 0);
-          if (rv != 0)
-            goto cleanup;
-        }
-    }
+  {
+    mapping_t *map = pool_elt_at_index (lcm->mapping_pool, map_indexp[0]);
+    if (!map->local)
+      {
+       dp_del_fwd_entry (lcm, 0, map_indexp[0]);
+
+       dm_args->is_add = 0;
+       gid_address_copy (&dm_args->eid, &map->eid);
+       dm_args->locator_set_index = map->locator_set_index;
+
+       /* delete mapping associated to fwd entry */
+       vnet_lisp_map_cache_add_del (dm_args, 0);
+
+       ls->is_add = 0;
+       ls->local = 0;
+       ls->index = map->locator_set_index;
+       /* delete locator set */
+       rv = vnet_lisp_add_del_locator_set (ls, 0);
+       if (rv != 0)
+         goto cleanup;
+      }
+  }
 
 cleanup:
   if (map_indices)
@@ -894,7 +1052,7 @@ cleanup:
  */
 int
 lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid,
-                        gid_address_t * remote_eid, u8 is_add)
+                       gid_address_t * remote_eid, u8 is_add)
 {
   u32 local_mi, remote_mi = ~0;
 
@@ -904,11 +1062,12 @@ lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid,
       return VNET_API_ERROR_LISP_DISABLED;
     }
 
-  remote_mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, remote_eid);
+  remote_mi = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid,
+                                       remote_eid, local_eid);
   if (GID_LOOKUP_MISS == remote_mi)
     {
-      clib_warning("Remote eid %U not found. Cannot add adjacency!",
-                   format_gid_address, remote_eid);
+      clib_warning ("Remote eid %U not found. Cannot add adjacency!",
+                   format_gid_address, remote_eid);
 
       return -1;
     }
@@ -921,16 +1080,16 @@ lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid,
       /* check if source eid has an associated mapping. If pitr mode is on,
        * just use the pitr's mapping */
       local_mi = lcm->lisp_pitr ? lcm->pitr_map_index :
-              gid_dictionary_lookup (&lcm->mapping_index_by_gid, local_eid);
+       gid_dictionary_lookup (&lcm->mapping_index_by_gid, local_eid);
 
 
       if (GID_LOOKUP_MISS == local_mi)
-        {
-          clib_warning("Local eid %U not found. Cannot add adjacency!",
-                       format_gid_address, local_eid);
+       {
+         clib_warning ("Local eid %U not found. Cannot add adjacency!",
+                       format_gid_address, local_eid);
 
-          return -1;
-        }
+         return -1;
+       }
 
       /* update forwarding */
       dp_add_fwd_entry (lcm, local_mi, remote_mi);
@@ -944,8 +1103,8 @@ lisp_add_del_adjacency (lisp_cp_main_t * lcm, gid_address_t * local_eid,
 int
 vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
-  return lisp_add_del_adjacency(lcm, &a->seid, &a->deid, a->is_add);
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  return lisp_add_del_adjacency (lcm, &a->leid, &a->reid, a->is_add);
 }
 
 /**
@@ -958,63 +1117,70 @@ vnet_lisp_add_del_adjacency (vnet_lisp_add_del_adjacency_args_t * a)
  */
 static clib_error_t *
 lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm,
-                                        unformat_input_t * input,
-                                        vlib_cli_command_t * cmd)
+                                       unformat_input_t * input,
+                                       vlib_cli_command_t * cmd)
 {
-  clib_error_t * error = 0;
-  unformat_input_t _line_input, * line_input = &_line_input;
+  clib_error_t *error = 0;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1, del_all = 0;
-  locator_t rloc, * rlocs = 0, * curr_rloc = 0;
+  locator_t rloc, *rlocs = 0, *curr_rloc = 0;
   gid_address_t eid;
   u8 eid_set = 0;
   u32 vni, action = ~0, p, w;
   int rv;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
-  memset(&eid, 0, sizeof(eid));
-  memset(&rloc, 0, sizeof(rloc));
+  memset (&eid, 0, sizeof (eid));
+  memset (&rloc, 0, sizeof (rloc));
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "del-all"))
-        del_all = 1;
+       del_all = 1;
       else if (unformat (line_input, "del"))
-        is_add = 0;
+       is_add = 0;
       else if (unformat (line_input, "add"))
-        ;
-      else if (unformat (line_input, "%U", unformat_gid_address, &eid))
-        eid_set = 1;
+       ;
+      else if (unformat (line_input, "eid %U", unformat_gid_address, &eid))
+       eid_set = 1;
       else if (unformat (line_input, "vni %u", &vni))
-        {
-          gid_address_vni (&eid) = vni;
-        }
+       {
+         gid_address_vni (&eid) = vni;
+       }
       else if (unformat (line_input, "p %d w %d", &p, &w))
-        {
-          if (!curr_rloc)
-            {
-              clib_warning ("No RLOC configured for setting priority/weight!");
-              goto done;
-            }
-          curr_rloc->priority = p;
-          curr_rloc->weight = w;
-        }
+       {
+         if (!curr_rloc)
+           {
+             clib_warning
+               ("No RLOC configured for setting priority/weight!");
+             goto done;
+           }
+         curr_rloc->priority = p;
+         curr_rloc->weight = w;
+       }
       else if (unformat (line_input, "rloc %U", unformat_ip_address,
-                         &rloc.address))
-        {
-          vec_add1 (rlocs, rloc);
-          curr_rloc = &rlocs[vec_len (rlocs) - 1];
-        }
+                        &gid_address_ip (&rloc.address)))
+       {
+         /* since rloc is stored in ip prefix we need to set prefix length */
+         ip_prefix_t *pref = &gid_address_ippref (&rloc.address);
+
+         u8 version = gid_address_ip_version (&rloc.address);
+         ip_prefix_len (pref) = ip_address_max_len (version);
+
+         vec_add1 (rlocs, rloc);
+         curr_rloc = &rlocs[vec_len (rlocs) - 1];
+       }
       else if (unformat (line_input, "action %U",
-                         unformat_negative_mapping_action, &action))
-        ;
+                        unformat_negative_mapping_action, &action))
+       ;
       else
-        {
-          clib_warning ("parse error");
-          goto done;
-        }
+       {
+         clib_warning ("parse error");
+         goto done;
+       }
     }
 
   if (!eid_set)
@@ -1025,14 +1191,11 @@ lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm,
 
   if (!del_all)
     {
-
-
-      if (is_add && (~0 == action)
-          && 0 == vec_len (rlocs))
-        {
-          clib_warning ("no action set for negative map-reply!");
-          goto done;
-        }
+      if (is_add && (~0 == action) && 0 == vec_len (rlocs))
+       {
+         clib_warning ("no action set for negative map-reply!");
+         goto done;
+       }
     }
   else
     {
@@ -1040,25 +1203,26 @@ lisp_add_del_remote_mapping_command_fn (vlib_main_t * vm,
       goto done;
     }
 
-  /* TODO build src/dst with seid*/
+  /* TODO build src/dst with seid */
 
   /* if it's a delete, clean forwarding */
   if (!is_add)
     {
-      lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+      lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
       rv = lisp_add_del_adjacency (lcm, 0, &eid, /* is_add */ 0);
       if (rv)
-        {
-          goto done;
-        }
+       {
+         goto done;
+       }
     }
 
   /* add as static remote mapping, i.e., not authoritative and infinite
    * ttl */
-  rv = vnet_lisp_add_del_mapping (&eid, rlocs, action, 0, ~0, is_add, 0);
+  rv = vnet_lisp_add_del_mapping (&eid, rlocs, action, 0, ~0, is_add,
+                                 1 /* is_static */ , 0);
 
   if (rv)
-    clib_warning("failed to %s remote mapping!", is_add ? "add" : "delete");
+    clib_warning ("failed to %s remote mapping!", is_add ? "add" : "delete");
 
 done:
   vec_free (rlocs);
@@ -1066,174 +1230,251 @@ done:
   return error;
 }
 
-VLIB_CLI_COMMAND (lisp_add_del_remote_mapping_command) = {
-    .path = "lisp remote-mapping",
-    .short_help = "lisp remote-mapping add|del [del-all] vni <vni> "
-     "eid <est-eid> [action <no-action|natively-forward|"
-     "send-map-request|drop>] rloc <dst-locator> p <prio> w <weight> "
-     "[rloc <dst-locator> ... ]",
-    .function = lisp_add_del_remote_mapping_command_fn,
-};
+VLIB_CLI_COMMAND (lisp_add_del_remote_mapping_command) =
+{
+.path = "lisp remote-mapping",.short_help =
+    "lisp remote-mapping add|del [del-all] vni <vni> "
+    "eid <est-eid> [action <no-action|natively-forward|"
+    "send-map-request|drop>] rloc <dst-locator> p <prio> w <weight> "
+    "[rloc <dst-locator> ... ]",.function =
+    lisp_add_del_remote_mapping_command_fn,};
 
 /**
  * Handler for add/del adjacency CLI.
  */
 static clib_error_t *
 lisp_add_del_adjacency_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                                   vlib_cli_command_t * cmd)
+                                  vlib_cli_command_t * cmd)
 {
-  clib_error_t * error = 0;
-  unformat_input_t _line_input, * line_input = &_line_input;
-  vnet_lisp_add_del_adjacency_args_t _a, * a = &_a;
+  clib_error_t *error = 0;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  vnet_lisp_add_del_adjacency_args_t _a, *a = &_a;
   u8 is_add = 1;
-  locator_t rloc, * rlocs = 0;
-  ip_prefix_t * deid_ippref, * seid_ippref;
-  gid_address_t seid, deid;
-  u8 * dmac = gid_address_mac (&deid);
-  u8 * smac = gid_address_mac (&seid);
-  u8 deid_set = 0, seid_set = 0;
-  u8 * s = 0;
-  u32 vni, action = ~0;
+  ip_prefix_t *reid_ippref, *leid_ippref;
+  gid_address_t leid, reid;
+  u8 *dmac = gid_address_mac (&reid);
+  u8 *smac = gid_address_mac (&leid);
+  u8 reid_set = 0, leid_set = 0;
+  u32 vni;
   int rv;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
-  memset(&deid, 0, sizeof(deid));
-  memset(&seid, 0, sizeof(seid));
-  memset(&rloc, 0, sizeof(rloc));
+  memset (&reid, 0, sizeof (reid));
+  memset (&leid, 0, sizeof (leid));
 
-  seid_ippref = &gid_address_ippref(&seid);
-  deid_ippref = &gid_address_ippref(&deid);
+  leid_ippref = &gid_address_ippref (&leid);
+  reid_ippref = &gid_address_ippref (&reid);
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "del"))
-        is_add = 0;
+       is_add = 0;
       else if (unformat (line_input, "add"))
-        ;
-      else if (unformat (line_input, "deid %U",
-                         unformat_ip_prefix, deid_ippref))
-        {
-          gid_address_type (&deid) = GID_ADDR_IP_PREFIX;
-          deid_set = 1;
-        }
-      else if (unformat (line_input, "deid %U",
-                         unformat_mac_address, dmac))
-        {
-          gid_address_type (&deid) = GID_ADDR_MAC;
-          deid_set = 1;
-        }
+       ;
+      else if (unformat (line_input, "reid %U",
+                        unformat_ip_prefix, reid_ippref))
+       {
+         gid_address_type (&reid) = GID_ADDR_IP_PREFIX;
+         reid_set = 1;
+       }
+      else if (unformat (line_input, "reid %U", unformat_mac_address, dmac))
+       {
+         gid_address_type (&reid) = GID_ADDR_MAC;
+         reid_set = 1;
+       }
       else if (unformat (line_input, "vni %u", &vni))
-        {
-          gid_address_vni (&seid) = vni;
-          gid_address_vni (&deid) = vni;
-        }
-      else if (unformat (line_input, "seid %U",
-                         unformat_ip_prefix, seid_ippref))
-        {
-          gid_address_type (&seid) = GID_ADDR_IP_PREFIX;
-          seid_set = 1;
-        }
-      else if (unformat (line_input, "seid %U",
-                         unformat_mac_address, smac))
-        {
-          gid_address_type (&seid) = GID_ADDR_MAC;
-          seid_set = 1;
-        }
+       {
+         gid_address_vni (&leid) = vni;
+         gid_address_vni (&reid) = vni;
+       }
+      else if (unformat (line_input, "leid %U",
+                        unformat_ip_prefix, leid_ippref))
+       {
+         gid_address_type (&leid) = GID_ADDR_IP_PREFIX;
+         leid_set = 1;
+       }
+      else if (unformat (line_input, "leid %U", unformat_mac_address, smac))
+       {
+         gid_address_type (&leid) = GID_ADDR_MAC;
+         leid_set = 1;
+       }
       else
-        {
-          clib_warning ("parse error");
-          goto done;
-        }
+       {
+         clib_warning ("parse error");
+         goto done;
+       }
     }
 
-  if (!deid_set)
+  if (!reid_set || !leid_set)
     {
-      clib_warning ("missing deid!");
+      clib_warning ("missing remote or local eid!");
       goto done;
     }
 
-  if (GID_ADDR_IP_PREFIX == gid_address_type (&deid))
+  if ((gid_address_type (&leid) != gid_address_type (&reid))
+      || (gid_address_type (&reid) == GID_ADDR_IP_PREFIX
+         && ip_prefix_version (reid_ippref)
+         != ip_prefix_version (leid_ippref)))
     {
-      /* if seid not set, make sure the ip version is the same as that
-       * of the deid. This ensures the seid to be configured will be
-       * either 0/0 or ::/0 */
-      if (!seid_set)
-        ip_prefix_version(seid_ippref) = ip_prefix_version(deid_ippref);
-
-      if (is_add &&
-          (ip_prefix_version (deid_ippref)
-           != ip_prefix_version(seid_ippref)))
-        {
-          clib_warning ("source and destination EIDs are not"
-                        " in the same IP family!");
-          goto done;
-        }
+      clib_warning ("remote and local EIDs are of different types!");
+      return error;
     }
 
-  if (is_add && (~0 == action)
-      && 0 == vec_len (rlocs))
-    {
-      clib_warning ("no action set for negative map-reply!");
-      goto done;
-    }
-
-  memset(a, 0, sizeof(a[0]));
-  gid_address_copy (&a->seid, &deid);
-  gid_address_copy (&a->deid, &seid);
+  memset (a, 0, sizeof (a[0]));
+  gid_address_copy (&a->leid, &leid);
+  gid_address_copy (&a->reid, &reid);
 
   a->is_add = is_add;
   rv = vnet_lisp_add_del_adjacency (a);
 
   if (rv)
-    clib_warning("failed to %s adjacency!", is_add ? "add" : "delete");
+    clib_warning ("failed to %s adjacency!", is_add ? "add" : "delete");
 
 done:
   unformat_free (line_input);
-  if (s)
-    vec_free (s);
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_add_del_adjacency_command) = {
     .path = "lisp adjacency",
-    .short_help = "lisp adjacency add|del vni <vni>"
-     "deid <dest-eid> seid <src-eid> [action <no-action|natively-forward|"
-     "send-map-request|drop>] rloc <dst-locator> [rloc <dst-locator> ... ]",
+    .short_help = "lisp adjacency add|del vni <vni> reid <remote-eid> "
+      "leid <local-eid>",
     .function = lisp_add_del_adjacency_command_fn,
 };
+/* *INDENT-ON* */
 
+int
+vnet_lisp_set_map_request_mode (u8 mode)
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+  if (vnet_lisp_enable_disable_status () == 0)
+    {
+      clib_warning ("LISP is disabled!");
+      return VNET_API_ERROR_LISP_DISABLED;
+    }
+
+  if (mode >= _MR_MODE_MAX)
+    {
+      clib_warning ("Invalid LISP map request mode %d!", mode);
+      return VNET_API_ERROR_INVALID_ARGUMENT;
+    }
+
+  lcm->map_request_mode = mode;
+  return 0;
+}
 
 static clib_error_t *
-lisp_show_map_resolvers_command_fn (vlib_main_t * vm,
-                                    unformat_input_t * input,
-                                    vlib_cli_command_t * cmd)
+lisp_map_request_mode_command_fn (vlib_main_t * vm,
+                                 unformat_input_t * input,
+                                 vlib_cli_command_t * cmd)
+{
+  unformat_input_t _i, *i = &_i;
+  map_request_mode_t mr_mode = _MR_MODE_MAX;
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, i))
+    return 0;
+
+  while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+    {
+      if (unformat (i, "dst-only"))
+       mr_mode = MR_MODE_DST_ONLY;
+      else if (unformat (i, "src-dst"))
+       mr_mode = MR_MODE_SRC_DST;
+      else
+       {
+         clib_warning ("parse error '%U'", format_unformat_error, i);
+         goto done;
+       }
+    }
+
+  if (_MR_MODE_MAX == mr_mode)
+    {
+      clib_warning ("No LISP map request mode entered!");
+      return 0;
+    }
+
+  vnet_lisp_set_map_request_mode (mr_mode);
+done:
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_map_request_mode_command) = {
+    .path = "lisp map-request mode",
+    .short_help = "lisp map-request mode dst-only|src-dst",
+    .function = lisp_map_request_mode_command_fn,
+};
+/* *INDENT-ON* */
+
+static u8 *
+format_lisp_map_request_mode (u8 * s, va_list * args)
 {
-  ip_address_t * addr;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  u32 mode = va_arg (*args, u32);
 
-  vec_foreach (addr, lcm->map_resolvers)
+  switch (mode)
     {
-      vlib_cli_output (vm, "%U", format_ip_address, addr);
+    case 0:
+      return format (0, "dst-only");
+    case 1:
+      return format (0, "src-dst");
     }
   return 0;
 }
 
+static clib_error_t *
+lisp_show_map_request_mode_command_fn (vlib_main_t * vm,
+                                      unformat_input_t * input,
+                                      vlib_cli_command_t * cmd)
+{
+  vlib_cli_output (vm, "map-request mode: %U", format_lisp_map_request_mode,
+                  vnet_lisp_get_map_request_mode ());
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (lisp_show_map_request_mode_command) = {
+    .path = "show lisp map-request mode",
+    .short_help = "show lisp map-request mode",
+    .function = lisp_show_map_request_mode_command_fn,
+};
+/* *INDENT-ON* */
+
+static clib_error_t *
+lisp_show_map_resolvers_command_fn (vlib_main_t * vm,
+                                   unformat_input_t * input,
+                                   vlib_cli_command_t * cmd)
+{
+  map_resolver_t *mr;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+  vec_foreach (mr, lcm->map_resolvers)
+  {
+    vlib_cli_output (vm, "%U", format_ip_address, &mr->address);
+  }
+  return 0;
+}
+
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_show_map_resolvers_command) = {
     .path = "show lisp map-resolvers",
     .short_help = "show lisp map-resolvers",
     .function = lisp_show_map_resolvers_command_fn,
 };
+/* *INDENT-ON* */
 
 int
 vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
   u32 locator_set_index = ~0;
-  mapping_t * m;
-  uword * p;
+  mapping_t *m;
+  uword *p;
 
   if (vnet_lisp_enable_disable_status () == 0)
     {
@@ -1272,28 +1513,28 @@ vnet_lisp_pitr_set_locator_set (u8 * locator_set_name, u8 is_add)
 
 static clib_error_t *
 lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm,
-                                      unformat_input_t * input,
-                                      vlib_cli_command_t * cmd)
+                                     unformat_input_t * input,
+                                     vlib_cli_command_t * cmd)
 {
   u8 locator_name_set = 0;
-  u8 * locator_set_name = 0;
+  u8 *locator_set_name = 0;
   u8 is_add = 1;
-  unformat_input_t _line_input, * line_input = &_line_input;
-  clib_error_t * error = 0;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  clib_error_t *error = 0;
   int rv = 0;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "ls %_%v%_", &locator_set_name))
-        locator_name_set = 1;
+       locator_name_set = 1;
       else if (unformat (line_input, "disable"))
-        is_add = 0;
+       is_add = 0;
       else
-        return clib_error_return (0, "parse error");
+       return clib_error_return (0, "parse error");
     }
 
   if (!locator_name_set)
@@ -1304,8 +1545,8 @@ lisp_pitr_set_locator_set_command_fn (vlib_main_t * vm,
   rv = vnet_lisp_pitr_set_locator_set (locator_set_name, is_add);
   if (0 != rv)
     {
-      error = clib_error_return(0, "failed to %s pitr!",
-                                is_add ? "add" : "delete");
+      error = clib_error_return (0, "failed to %s pitr!",
+                                is_add ? "add" : "delete");
     }
 
 done:
@@ -1314,118 +1555,128 @@ done:
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_pitr_set_locator_set_command) = {
     .path = "lisp pitr",
     .short_help = "lisp pitr [disable] ls <locator-set-name>",
     .function = lisp_pitr_set_locator_set_command_fn,
 };
+/* *INDENT-ON* */
 
 static clib_error_t *
 lisp_show_pitr_command_fn (vlib_main_t * vm,
-                           unformat_input_t * input,
-                           vlib_cli_command_t * cmd)
+                          unformat_input_t * input, vlib_cli_command_t * cmd)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
-  mapping_t * m;
-  locator_set_t * ls;
-  u8 * tmp_str = 0;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  mapping_t *m;
+  locator_set_t *ls;
+  u8 *tmp_str = 0;
 
   vlib_cli_output (vm, "%=20s%=16s",
-                   "pitr", lcm->lisp_pitr ? "locator-set" : "");
+                  "pitr", lcm->lisp_pitr ? "locator-set" : "");
 
-  if (!lcm->lisp_pitr) {
-    vlib_cli_output (vm, "%=20s", "disable");
-    return 0;
-  }
+  if (!lcm->lisp_pitr)
+    {
+      vlib_cli_output (vm, "%=20s", "disable");
+      return 0;
+    }
 
-  if (~0 == lcm->pitr_map_index) {
-    tmp_str = format(0, "N/A");
-  } else {
-    m = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
-    if (~0 != m->locator_set_index) {
-      ls = pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
-      tmp_str = format(0, "%s", ls->name);
-    } else {
-      tmp_str = format(0, "N/A");
+  if (~0 == lcm->pitr_map_index)
+    {
+      tmp_str = format (0, "N/A");
     }
-  }
-  vec_add1(tmp_str, 0);
+  else
+    {
+      m = pool_elt_at_index (lcm->mapping_pool, lcm->pitr_map_index);
+      if (~0 != m->locator_set_index)
+       {
+         ls =
+           pool_elt_at_index (lcm->locator_set_pool, m->locator_set_index);
+         tmp_str = format (0, "%s", ls->name);
+       }
+      else
+       {
+         tmp_str = format (0, "N/A");
+       }
+    }
+  vec_add1 (tmp_str, 0);
 
-  vlib_cli_output (vm, "%=20s%=16s",
-                   "enable", tmp_str);
+  vlib_cli_output (vm, "%=20s%=16s", "enable", tmp_str);
 
-  vec_free(tmp_str);
+  vec_free (tmp_str);
 
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_show_pitr_command) = {
     .path = "show lisp pitr",
     .short_help = "Show pitr",
     .function = lisp_show_pitr_command_fn,
 };
+/* *INDENT-ON* */
 
 static u8 *
 format_eid_entry (u8 * s, va_list * args)
 {
-  vnet_main_t * vnm = va_arg (*args, vnet_main_t *);
-  lisp_cp_main_t * lcm = va_arg (*args, lisp_cp_main_t *);
-  mapping_t * mapit = va_arg (*args, mapping_t *);
-  locator_set_t * ls = va_arg (*args, locator_set_t *);
-  gid_address_t * gid = &mapit->eid;
+  vnet_main_t *vnm = va_arg (*args, vnet_main_t *);
+  lisp_cp_main_t *lcm = va_arg (*args, lisp_cp_main_t *);
+  mapping_t *mapit = va_arg (*args, mapping_t *);
+  locator_set_t *ls = va_arg (*args, locator_set_t *);
+  gid_address_t *gid = &mapit->eid;
   u32 ttl = mapit->ttl;
   u8 aut = mapit->authoritative;
-  u32 * loc_index;
+  u32 *loc_index;
   u8 first_line = 1;
-  u8 * loc;
+  u8 *loc;
 
-  u8 * type = ls->local ? format(0, "local(%s)", ls->name)
-                        : format(0, "remote");
+  u8 *type = ls->local ? format (0, "local(%s)", ls->name)
+    : format (0, "remote");
 
   if (vec_len (ls->locator_indices) == 0)
     {
       s = format (s, "%-35U%-30s%-20u%-u", format_gid_address, gid,
-                                           type, ttl, aut);
+                 type, ttl, aut);
     }
   else
     {
       vec_foreach (loc_index, ls->locator_indices)
-        {
-          locator_t * l = pool_elt_at_index (lcm->locator_pool, loc_index[0]);
-          if (l->local)
-            loc = format (0, "%U", format_vnet_sw_if_index_name, vnm,
-                          l->sw_if_index);
-          else
-            loc = format (0, "%U", format_ip_address,
-                          &gid_address_ip (&l->address));
-
-          if (first_line)
-            {
-              s = format (s, "%-35U%-20s%-30v%-20u%-u\n", format_gid_address,
-                          gid, type, loc, ttl, aut);
-              first_line = 0;
-            }
-          else
-            s = format (s, "%55s%v\n", "", loc);
-        }
+      {
+       locator_t *l = pool_elt_at_index (lcm->locator_pool, loc_index[0]);
+       if (l->local)
+         loc = format (0, "%U", format_vnet_sw_if_index_name, vnm,
+                       l->sw_if_index);
+       else
+         loc = format (0, "%U", format_ip_address,
+                       &gid_address_ip (&l->address));
+
+       if (first_line)
+         {
+           s = format (s, "%-35U%-20s%-30v%-20u%-u\n", format_gid_address,
+                       gid, type, loc, ttl, aut);
+           first_line = 0;
+         }
+       else
+         s = format (s, "%55s%v\n", "", loc);
+      }
     }
   return s;
 }
 
 static clib_error_t *
 lisp_show_eid_table_command_fn (vlib_main_t * vm,
-                                unformat_input_t * input,
-                                vlib_cli_command_t * cmd)
+                               unformat_input_t * input,
+                               vlib_cli_command_t * cmd)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  mapping_t * mapit;
-  unformat_input_t _line_input, * line_input = &_line_input;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  mapping_t *mapit;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u32 mi;
   gid_address_t eid;
   u8 print_all = 1;
   u8 filter = 0;
 
-  memset (&eid, 0, sizeof(eid));
+  memset (&eid, 0, sizeof (eid));
 
   /* Get a line of input. */
   if (!unformat_user (input, unformat_line_input, line_input))
@@ -1434,21 +1685,22 @@ lisp_show_eid_table_command_fn (vlib_main_t * vm,
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "eid %U", unformat_gid_address, &eid))
-        print_all = 0;
+       print_all = 0;
       else if (unformat (line_input, "local"))
-        filter = 1;
-      else if (unformat(line_input, "remote"))
-        filter = 2;
+       filter = 1;
+      else if (unformat (line_input, "remote"))
+       filter = 2;
       else
-        return clib_error_return (0, "parse error: '%U'",
-                                  format_unformat_error, line_input);
+       return clib_error_return (0, "parse error: '%U'",
+                                 format_unformat_error, line_input);
     }
 
   vlib_cli_output (vm, "%-35s%-20s%-30s%-20s%-s",
-                   "EID", "type", "locators", "ttl", "autoritative");
+                  "EID", "type", "locators", "ttl", "autoritative");
 
   if (print_all)
     {
+      /* *INDENT-OFF* */
       pool_foreach (mapit, lcm->mapping_pool,
       ({
         locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool,
@@ -1461,35 +1713,38 @@ lisp_show_eid_table_command_fn (vlib_main_t * vm,
         vlib_cli_output (vm, "%U", format_eid_entry, lcm->vnet_main,
                          lcm, mapit, ls);
       }));
+      /* *INDENT-ON* */
     }
   else
     {
       mi = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &eid);
-      if ((u32)~0 == mi)
-        return 0;
+      if ((u32) ~ 0 == mi)
+       return 0;
 
       mapit = pool_elt_at_index (lcm->mapping_pool, mi);
-      locator_set_t * ls = pool_elt_at_index (lcm->locator_set_pool,
-                                              mapit->locator_set_index);
+      locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool,
+                                            mapit->locator_set_index);
 
       if (filter && !((1 == filter && ls->local) ||
-        (2 == filter && !ls->local)))
-        {
-          return 0;
-        }
+                     (2 == filter && !ls->local)))
+       {
+         return 0;
+       }
 
       vlib_cli_output (vm, "%U,", format_eid_entry, lcm->vnet_main,
-                       lcm, mapit, ls);
+                      lcm, mapit, ls);
     }
 
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_cp_show_eid_table_command) = {
     .path = "show lisp eid-table",
     .short_help = "Shows EID table",
     .function = lisp_show_eid_table_command_fn,
 };
+/* *INDENT-ON* */
 
 /* cleans locator to locator-set data and removes locators not part of
  * any locator-set */
@@ -1497,37 +1752,37 @@ static void
 clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
 {
   u32 i, j, *loc_indexp, *ls_indexp, **ls_indexes, *to_be_deleted = 0;
-  locator_set_t * ls = pool_elt_at_index(lcm->locator_set_pool, lsi);
-  for (i = 0; i < vec_len(ls->locator_indices); i++)
-    {
-      loc_indexp = vec_elt_at_index(ls->locator_indices, i);
-      ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
-                                    loc_indexp[0]);
-      for (j = 0; j < vec_len(ls_indexes[0]); j++)
-        {
-          ls_indexp = vec_elt_at_index(ls_indexes[0], j);
-          if (ls_indexp[0] == lsi)
-            break;
-        }
-
-      /* delete index for removed locator-set*/
-      vec_del1(ls_indexes[0], j);
+  locator_set_t *ls = pool_elt_at_index (lcm->locator_set_pool, lsi);
+  for (i = 0; i < vec_len (ls->locator_indices); i++)
+    {
+      loc_indexp = vec_elt_at_index (ls->locator_indices, i);
+      ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
+                                    loc_indexp[0]);
+      for (j = 0; j < vec_len (ls_indexes[0]); j++)
+       {
+         ls_indexp = vec_elt_at_index (ls_indexes[0], j);
+         if (ls_indexp[0] == lsi)
+           break;
+       }
+
+      /* delete index for removed locator-set */
+      vec_del1 (ls_indexes[0], j);
 
       /* delete locator if it's part of no locator-set */
       if (vec_len (ls_indexes[0]) == 0)
-        {
-          pool_put_index (lcm->locator_pool, loc_indexp[0]);
-          vec_add1 (to_be_deleted, i);
-        }
+       {
+         pool_put_index (lcm->locator_pool, loc_indexp[0]);
+         vec_add1 (to_be_deleted, i);
+       }
     }
 
   if (to_be_deleted)
     {
       for (i = 0; i < vec_len (to_be_deleted); i++)
-        {
-          loc_indexp = vec_elt_at_index (to_be_deleted, i);
-          vec_del1 (ls->locator_indices, loc_indexp[0]);
-        }
+       {
+         loc_indexp = vec_elt_at_index (to_be_deleted, i);
+         vec_del1 (ls->locator_indices, loc_indexp[0]);
+       }
       vec_free (to_be_deleted);
     }
 }
@@ -1535,15 +1790,15 @@ clean_locator_to_locator_set (lisp_cp_main_t * lcm, u32 lsi)
 static inline uword *
 get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
 
-  ASSERT(a != NULL);
-  ASSERT(p != NULL);
+  ASSERT (a != NULL);
+  ASSERT (p != NULL);
 
   /* find locator-set */
   if (a->local)
     {
-      p = hash_get_mem(lcm->locator_set_index_by_name, a->name);
+      p = hash_get_mem (lcm->locator_set_index_by_name, a->name);
     }
   else
     {
@@ -1555,57 +1810,56 @@ get_locator_set_index (vnet_lisp_add_del_locator_set_args_t * a, uword * p)
 
 static inline int
 is_locator_in_locator_set (lisp_cp_main_t * lcm, locator_set_t * ls,
-                           locator_t * loc)
+                          locator_t * loc)
 {
-  locator_t * itloc;
-  u32 * locit;
+  locator_t *itloc;
+  u32 *locit;
 
-  ASSERT(ls != NULL);
-  ASSERT(loc != NULL);
+  ASSERT (ls != NULL);
+  ASSERT (loc != NULL);
 
-  vec_foreach(locit, ls->locator_indices)
-    {
-      itloc = pool_elt_at_index(lcm->locator_pool, locit[0]);
-      if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
-          (!ls->local && !gid_address_cmp(&itloc->address, &loc->address)))
-        {
-          clib_warning("Duplicate locator");
-          return VNET_API_ERROR_VALUE_EXIST;
-        }
-    }
+  vec_foreach (locit, ls->locator_indices)
+  {
+    itloc = pool_elt_at_index (lcm->locator_pool, locit[0]);
+    if ((ls->local && itloc->sw_if_index == loc->sw_if_index) ||
+       (!ls->local && !gid_address_cmp (&itloc->address, &loc->address)))
+      {
+       clib_warning ("Duplicate locator");
+       return VNET_API_ERROR_VALUE_EXIST;
+      }
+  }
 
   return 0;
 }
 
 static inline void
-remove_locator_from_locator_set (locator_set_t * ls, u32 * locit, u32 ls_index,
-                                 u32 loc_id)
+remove_locator_from_locator_set (locator_set_t * ls, u32 * locit,
+                                u32 ls_index, u32 loc_id)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  u32 ** ls_indexes = NULL;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  u32 **ls_indexes = NULL;
 
-  ASSERT(ls != NULL);
-  ASSERT(locit != NULL);
+  ASSERT (ls != NULL);
+  ASSERT (locit != NULL);
 
-  ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
-                                locit[0]);
-  pool_put_index(lcm->locator_pool, locit[0]);
-  vec_del1(ls->locator_indices, loc_id);
-  vec_del1(ls_indexes[0], ls_index);
+  ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets, locit[0]);
+  pool_put_index (lcm->locator_pool, locit[0]);
+  vec_del1 (ls->locator_indices, loc_id);
+  vec_del1 (ls_indexes[0], ls_index);
 }
 
 int
 vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
-                           locator_set_t * ls, u32 * ls_result)
+                          locator_set_t * ls, u32 * ls_result)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  locator_t * loc = NULL, *itloc = NULL;
-  uword _p = (u32)~0, * p = &_p;
-  u32 loc_index = ~0, ls_index = ~0, * locit = NULL, ** ls_indexes = NULL;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  locator_t *loc = NULL, *itloc = NULL;
+  uword _p = (u32) ~ 0, *p = &_p;
+  u32 loc_index = ~0, ls_index = ~0, *locit = NULL, **ls_indexes = NULL;
   u32 loc_id = ~0;
   int ret = 0;
 
-  ASSERT(a != NULL);
+  ASSERT (a != NULL);
 
   if (vnet_lisp_enable_disable_status () == 0)
     {
@@ -1613,89 +1867,86 @@ vnet_lisp_add_del_locator (vnet_lisp_add_del_locator_set_args_t * a,
       return VNET_API_ERROR_LISP_DISABLED;
     }
 
-  p = get_locator_set_index(a, p);
+  p = get_locator_set_index (a, p);
   if (!p)
     {
-      clib_warning("locator-set %v doesn't exist", a->name);
+      clib_warning ("locator-set %v doesn't exist", a->name);
       return VNET_API_ERROR_INVALID_ARGUMENT;
     }
 
   if (ls == 0)
     {
-      ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
+      ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
       if (!ls)
-        {
-          clib_warning("locator-set %d to be overwritten doesn't exist!",
-                       p[0]);
-          return VNET_API_ERROR_INVALID_ARGUMENT;
-        }
+       {
+         clib_warning ("locator-set %d to be overwritten doesn't exist!",
+                       p[0]);
+         return VNET_API_ERROR_INVALID_ARGUMENT;
+       }
     }
 
   if (a->is_add)
     {
+      if (ls_result)
+       ls_result[0] = p[0];
 
-        if (ls_result)
-          ls_result[0] = p[0];
-
-        /* allocate locators */
-        vec_foreach (itloc, a->locators)
-          {
-            ret = is_locator_in_locator_set(lcm, ls, itloc);
-            if (0 != ret)
-              {
-                return ret;
-              }
-
-            pool_get(lcm->locator_pool, loc);
-            loc[0] = itloc[0];
-            loc_index = loc - lcm->locator_pool;
-
-            vec_add1(ls->locator_indices, loc_index);
-
-            vec_validate (lcm->locator_to_locator_sets, loc_index);
-            ls_indexes = vec_elt_at_index(lcm->locator_to_locator_sets,
-                                          loc_index);
-            vec_add1(ls_indexes[0], ls_index);
-          }
-      }
-    else
+      /* allocate locators */
+      vec_foreach (itloc, a->locators)
       {
-        ls_index = p[0];
+       ret = is_locator_in_locator_set (lcm, ls, itloc);
+       if (0 != ret)
+         {
+           return ret;
+         }
+
+       pool_get (lcm->locator_pool, loc);
+       loc[0] = itloc[0];
+       loc_index = loc - lcm->locator_pool;
+
+       vec_add1 (ls->locator_indices, loc_index);
+
+       vec_validate (lcm->locator_to_locator_sets, loc_index);
+       ls_indexes = vec_elt_at_index (lcm->locator_to_locator_sets,
+                                      loc_index);
+       vec_add1 (ls_indexes[0], p[0]);
+      }
+    }
+  else
+    {
+      ls_index = p[0];
 
-        itloc = a->locators;
-        loc_id = 0;
-        vec_foreach (locit, ls->locator_indices)
-          {
-            loc = pool_elt_at_index(lcm->locator_pool, locit[0]);
-
-            if (loc->local && loc->sw_if_index == itloc->sw_if_index)
-              {
-                remove_locator_from_locator_set(ls, locit,
-                                                ls_index, loc_id);
-              }
-            if (0 == loc->local &&
-                !gid_address_cmp(&loc->address, &itloc->address))
-              {
-                remove_locator_from_locator_set(ls, locit,
-                                                ls_index, loc_id);
-              }
-
-            loc_id++;
-          }
+      itloc = a->locators;
+      loc_id = 0;
+      vec_foreach (locit, ls->locator_indices)
+      {
+       loc = pool_elt_at_index (lcm->locator_pool, locit[0]);
+
+       if (loc->local && loc->sw_if_index == itloc->sw_if_index)
+         {
+           remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
+         }
+       if (0 == loc->local &&
+           !gid_address_cmp (&loc->address, &itloc->address))
+         {
+           remove_locator_from_locator_set (ls, locit, ls_index, loc_id);
+         }
+
+       loc_id++;
       }
+    }
 
   return 0;
 }
 
 int
 vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
-                               u32 * ls_result)
+                              u32 * ls_result)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  locator_set_t * ls;
-  uword _p = (u32)~0, * p = &_p;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  locator_set_t *ls;
+  uword _p = (u32) ~ 0, *p = &_p;
   u32 ls_index;
-  u32 ** eid_indexes;
+  u32 **eid_indexes;
   int ret = 0;
 
   if (vnet_lisp_enable_disable_status () == 0)
@@ -1706,115 +1957,123 @@ vnet_lisp_add_del_locator_set (vnet_lisp_add_del_locator_set_args_t * a,
 
   if (a->is_add)
     {
-      p = get_locator_set_index(a, p);
+      p = get_locator_set_index (a, p);
 
       /* overwrite */
-      if (p && p[0] != (u32)~0)
-        {
-          ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
-          if (!ls)
-            {
-              clib_warning("locator-set %d to be overwritten doesn't exist!",
-                           p[0]);
-              return -1;
-            }
-
-          /* clean locator to locator-set vectors and remove locators if
-           * they're not part of another locator-set */
-          clean_locator_to_locator_set (lcm, p[0]);
-
-          /* remove locator indices from locator set */
-          vec_free(ls->locator_indices);
-
-          ls_index = p[0];
-
-          if (ls_result)
-            ls_result[0] = p[0];
-        }
+      if (p && p[0] != (u32) ~ 0)
+       {
+         ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
+         if (!ls)
+           {
+             clib_warning ("locator-set %d to be overwritten doesn't exist!",
+                           p[0]);
+             return -1;
+           }
+
+         /* clean locator to locator-set vectors and remove locators if
+          * they're not part of another locator-set */
+         clean_locator_to_locator_set (lcm, p[0]);
+
+         /* remove locator indices from locator set */
+         vec_free (ls->locator_indices);
+
+         ls_index = p[0];
+
+         if (ls_result)
+           ls_result[0] = p[0];
+       }
       /* new locator-set */
       else
-        {
-          pool_get(lcm->locator_set_pool, ls);
-          memset(ls, 0, sizeof(*ls));
-          ls_index = ls - lcm->locator_set_pool;
-
-          if (a->local)
-            {
-              ls->name = vec_dup(a->name);
-
-              if (!lcm->locator_set_index_by_name)
-                lcm->locator_set_index_by_name = hash_create_vec(
-                    /* size */0, sizeof(ls->name[0]), sizeof(uword));
-              hash_set_mem(lcm->locator_set_index_by_name, ls->name, ls_index);
-
-              /* mark as local locator-set */
-              vec_add1(lcm->local_locator_set_indexes, ls_index);
-            }
-          ls->local = a->local;
-          if (ls_result)
-            ls_result[0] = ls_index;
-        }
-
-      ret = vnet_lisp_add_del_locator(a, ls, NULL);
+       {
+         pool_get (lcm->locator_set_pool, ls);
+         memset (ls, 0, sizeof (*ls));
+         ls_index = ls - lcm->locator_set_pool;
+
+         if (a->local)
+           {
+             ls->name = vec_dup (a->name);
+
+             if (!lcm->locator_set_index_by_name)
+               lcm->locator_set_index_by_name = hash_create_vec (
+                                                                  /* size */
+                                                                  0,
+                                                                  sizeof
+                                                                  (ls->name
+                                                                   [0]),
+                                                                  sizeof
+                                                                  (uword));
+             hash_set_mem (lcm->locator_set_index_by_name, ls->name,
+                           ls_index);
+
+             /* mark as local locator-set */
+             vec_add1 (lcm->local_locator_set_indexes, ls_index);
+           }
+         ls->local = a->local;
+         if (ls_result)
+           ls_result[0] = ls_index;
+       }
+
+      ret = vnet_lisp_add_del_locator (a, ls, NULL);
       if (0 != ret)
-        {
-          return ret;
-        }
+       {
+         return ret;
+       }
     }
   else
     {
-      p = get_locator_set_index(a, p);
+      p = get_locator_set_index (a, p);
       if (!p)
-        {
-          clib_warning("locator-set %v doesn't exists", a->name);
-          return -1;
-        }
+       {
+         clib_warning ("locator-set %v doesn't exists", a->name);
+         return -1;
+       }
 
-      ls = pool_elt_at_index(lcm->locator_set_pool, p[0]);
+      ls = pool_elt_at_index (lcm->locator_set_pool, p[0]);
       if (!ls)
-        {
-          clib_warning("locator-set with index %d doesn't exists", p[0]);
-          return -1;
-        }
+       {
+         clib_warning ("locator-set with index %d doesn't exists", p[0]);
+         return -1;
+       }
 
       if (lcm->mreq_itr_rlocs == p[0])
-        {
-          clib_warning ("Can't delete the locator-set used to constrain "
-                        "the itr-rlocs in map-requests!");
-          return -1;
-        }
-
-      if (vec_len(lcm->locator_set_to_eids) != 0)
-      {
-          eid_indexes = vec_elt_at_index(lcm->locator_set_to_eids, p[0]);
-          if (vec_len(eid_indexes[0]) != 0)
-          {
-              clib_warning ("Can't delete a locator that supports a mapping!");
-              return -1;
-          }
-      }
+       {
+         clib_warning ("Can't delete the locator-set used to constrain "
+                       "the itr-rlocs in map-requests!");
+         return -1;
+       }
+
+      if (vec_len (lcm->locator_set_to_eids) != 0)
+       {
+         eid_indexes = vec_elt_at_index (lcm->locator_set_to_eids, p[0]);
+         if (vec_len (eid_indexes[0]) != 0)
+           {
+             clib_warning
+               ("Can't delete a locator that supports a mapping!");
+             return -1;
+           }
+       }
 
       /* clean locator to locator-sets data */
       clean_locator_to_locator_set (lcm, p[0]);
 
       if (ls->local)
-        {
-          u32 it, lsi;
-
-          vec_foreach_index(it, lcm->local_locator_set_indexes)
-          {
-            lsi = vec_elt(lcm->local_locator_set_indexes, it);
-            if (lsi == p[0])
-              {
-                vec_del1(lcm->local_locator_set_indexes, it);
-                break;
-              }
-          }
-          hash_unset_mem(lcm->locator_set_index_by_name, ls->name);
-        }
-      vec_free(ls->name);
-      vec_free(ls->locator_indices);
-      pool_put(lcm->locator_set_pool, ls);
+       {
+         u32 it, lsi;
+
+         vec_foreach_index (it, lcm->local_locator_set_indexes)
+         {
+           lsi = vec_elt (lcm->local_locator_set_indexes, it);
+           if (lsi == p[0])
+             {
+               vec_del1 (lcm->local_locator_set_indexes, it);
+               break;
+             }
+         }
+         hash_unset_mem (lcm->locator_set_index_by_name, ls->name);
+       }
+      vec_free (ls->name);
+      vec_free (ls->locator_indices);
+      pool_put (lcm->locator_set_pool, ls);
     }
   return 0;
 }
@@ -1823,35 +2082,36 @@ clib_error_t *
 vnet_lisp_enable_disable (u8 is_enable)
 {
   u32 vni, dp_table;
-  clib_error_t * error = 0;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
-  vnet_lisp_gpe_enable_disable_args_t _a, * a = &_a;
+  clib_error_t *error = 0;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  vnet_lisp_gpe_enable_disable_args_t _a, *a = &_a;
 
   a->is_en = is_enable;
   error = vnet_lisp_gpe_enable_disable (a);
   if (error)
     {
       return clib_error_return (0, "failed to %s data-plane!",
-                                a->is_en ? "enable" : "disable");
+                               a->is_en ? "enable" : "disable");
     }
 
   if (is_enable)
     {
       /* enable all l2 and l3 ifaces */
+
+      /* *INDENT-OFF* */
       hash_foreach(vni, dp_table, lcm->table_id_by_vni, ({
         dp_add_del_iface(lcm, vni, 0, 1);
       }));
-
       hash_foreach(vni, dp_table, lcm->bd_id_by_vni, ({
         dp_add_del_iface(lcm, vni, /* is_l2 */ 1, 1);
       }));
+      /* *INDENT-ON* */
     }
   else
     {
       /* clear interface table */
-      hash_free(lcm->dp_intf_by_vni);
-      hash_free(lcm->fwd_entry_by_mapping_index);
-      pool_free(lcm->fwd_entry_pool);
+      hash_free (lcm->fwd_entry_by_mapping_index);
+      pool_free (lcm->fwd_entry_pool);
     }
 
   /* update global flag */
@@ -1862,137 +2122,180 @@ vnet_lisp_enable_disable (u8 is_enable)
 
 static clib_error_t *
 lisp_enable_disable_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                                vlib_cli_command_t * cmd)
+                               vlib_cli_command_t * cmd)
 {
-  unformat_input_t _line_input, * line_input = &_line_input;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_enabled = 0;
   u8 is_set = 0;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "enable"))
-        {
-          is_set = 1;
-          is_enabled = 1;
-        }
+       {
+         is_set = 1;
+         is_enabled = 1;
+       }
       else if (unformat (line_input, "disable"))
-        is_set = 1;
+       is_set = 1;
       else
-        {
-          return clib_error_return (0, "parse error: '%U'",
-                                   format_unformat_error, line_input);
-        }
+       {
+         return clib_error_return (0, "parse error: '%U'",
+                                   format_unformat_error, line_input);
+       }
     }
 
   if (!is_set)
-      return clib_error_return (0, "state not set");
+    return clib_error_return (0, "state not set");
 
   return vnet_lisp_enable_disable (is_enabled);
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_cp_enable_disable_command) = {
     .path = "lisp",
     .short_help = "lisp [enable|disable]",
     .function = lisp_enable_disable_command_fn,
 };
+/* *INDENT-ON* */
 
 u8
 vnet_lisp_enable_disable_status (void)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
   return lcm->is_enabled;
 }
 
 static u8 *
 format_lisp_status (u8 * s, va_list * args)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
   return format (s, "%s", lcm->is_enabled ? "enabled" : "disabled");
 }
 
 static clib_error_t *
 lisp_show_status_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                             vlib_cli_command_t * cmd)
+                            vlib_cli_command_t * cmd)
 {
-  u8 * msg = 0;
+  u8 *msg = 0;
   msg = format (msg, "feature: %U\ngpe: %U\n",
-                format_lisp_status, format_vnet_lisp_gpe_status);
+               format_lisp_status, format_vnet_lisp_gpe_status);
   vlib_cli_output (vm, "%v", msg);
   vec_free (msg);
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_show_status_command) = {
     .path = "show lisp status",
     .short_help = "show lisp status",
     .function = lisp_show_status_command_fn,
 };
+/* *INDENT-ON* */
 
 static clib_error_t *
-lisp_show_eid_table_map_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                                    vlib_cli_command_t * cmd)
+lisp_show_eid_table_map_command_fn (vlib_main_t * vm,
+                                   unformat_input_t * input,
+                                   vlib_cli_command_t * cmd)
 {
-  hash_pair_t * p;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main ();
+  hash_pair_t *p;
+  unformat_input_t _line_input, *line_input = &_line_input;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  uword *vni_table = 0;
+  u8 is_l2 = 0;
+
+  /* Get a line of input. */
+  if (!unformat_user (input, unformat_line_input, line_input))
+    return 0;
 
-  vlib_cli_output (vm, "%=10s%=10s", "VNI", "VRF");
-  hash_foreach_pair (p, lcm->table_id_by_vni,
+  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
-      vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]);
-    });
+      if (unformat (line_input, "l2"))
+       {
+         vni_table = lcm->bd_id_by_vni;
+         is_l2 = 1;
+       }
+      else if (unformat (line_input, "l3"))
+       {
+         vni_table = lcm->table_id_by_vni;
+         is_l2 = 0;
+       }
+      else
+       return clib_error_return (0, "parse error: '%U'",
+                                 format_unformat_error, line_input);
+    }
+
+  if (!vni_table)
+    {
+      vlib_cli_output (vm, "Error: expected l2|l3 param!\n");
+      return 0;
+    }
+
+  vlib_cli_output (vm, "%=10s%=10s", "VNI", is_l2 ? "BD" : "VRF");
+
+  /* *INDENT-OFF* */
+  hash_foreach_pair (p, vni_table,
+  ({
+    vlib_cli_output (vm, "%=10d%=10d", p->key, p->value[0]);
+  }));
+  /* *INDENT-ON* */
+
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_show_eid_table_map_command) = {
     .path = "show lisp eid-table map",
-    .short_help = "show lisp eid-table vni to vrf mappings",
+    .short_help = "show lisp eid-table l2|l3",
     .function = lisp_show_eid_table_map_command_fn,
 };
+/* *INDENT-ON* */
 
 static clib_error_t *
-lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                                     vlib_cli_command_t * cmd)
+lisp_add_del_locator_set_command_fn (vlib_main_t * vm,
+                                    unformat_input_t * input,
+                                    vlib_cli_command_t * cmd)
 {
-  lisp_gpe_main_t * lgm = &lisp_gpe_main;
-  vnet_main_t * vnm = lgm->vnet_main;
-  unformat_input_t _line_input, * line_input = &_line_input;
+  lisp_gpe_main_t *lgm = &lisp_gpe_main;
+  vnet_main_t *vnm = lgm->vnet_main;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1;
-  clib_error_t * error = 0;
-  u8 * locator_set_name = 0;
-  locator_t locator, * locators = 0;
-  vnet_lisp_add_del_locator_set_args_t _a, * a = &_a;
+  clib_error_t *error = 0;
+  u8 *locator_set_name = 0;
+  locator_t locator, *locators = 0;
+  vnet_lisp_add_del_locator_set_args_t _a, *a = &_a;
   u32 ls_index = 0;
   int rv = 0;
 
-  memset(&locator, 0, sizeof(locator));
-  memset(a, 0, sizeof(a[0]));
+  memset (&locator, 0, sizeof (locator));
+  memset (a, 0, sizeof (a[0]));
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "add %_%v%_", &locator_set_name))
-        is_add = 1;
+       is_add = 1;
       else if (unformat (line_input, "del %_%v%_", &locator_set_name))
-        is_add = 0;
+       is_add = 0;
       else if (unformat (line_input, "iface %U p %d w %d",
-                         unformat_vnet_sw_interface, vnm, &locator.sw_if_index,
-                         &locator.priority, &locator.weight))
-        {
-          locator.local = 1;
-          vec_add1(locators, locator);
-        }
+                        unformat_vnet_sw_interface, vnm,
+                        &locator.sw_if_index, &locator.priority,
+                        &locator.weight))
+       {
+         locator.local = 1;
+         vec_add1 (locators, locator);
+       }
       else
-        {
-          error = unformat_parse_error(line_input);
-          goto done;
-        }
+       {
+         error = unformat_parse_error (line_input);
+         goto done;
+       }
     }
 
   a->name = locator_set_name;
@@ -2000,120 +2303,128 @@ lisp_add_del_locator_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
   a->is_add = is_add;
   a->local = 1;
 
-  rv = vnet_lisp_add_del_locator_set(a, &ls_index);
+  rv = vnet_lisp_add_del_locator_set (a, &ls_index);
   if (0 != rv)
     {
-      error = clib_error_return(0, "failed to %s locator-set!",
-                                is_add ? "add" : "delete");
+      error = clib_error_return (0, "failed to %s locator-set!",
+                                is_add ? "add" : "delete");
     }
 
- done:
-  vec_free(locators);
+done:
+  vec_free (locators);
   if (locator_set_name)
     vec_free (locator_set_name);
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_cp_add_del_locator_set_command) = {
     .path = "lisp locator-set",
     .short_help = "lisp locator-set add/del <name> [iface <iface-name> "
         "p <priority> w <weight>]",
     .function = lisp_add_del_locator_set_command_fn,
 };
+/* *INDENT-ON* */
 
 static clib_error_t *
-lisp_add_del_locator_in_set_command_fn (vlib_main_t * vm, unformat_input_t * input,
-                                     vlib_cli_command_t * cmd)
+lisp_add_del_locator_in_set_command_fn (vlib_main_t * vm,
+                                       unformat_input_t * input,
+                                       vlib_cli_command_t * cmd)
 {
-  lisp_gpe_main_t * lgm = &lisp_gpe_main;
-  vnet_main_t * vnm = lgm->vnet_main;
-  unformat_input_t _line_input, * line_input = &_line_input;
+  lisp_gpe_main_t *lgm = &lisp_gpe_main;
+  vnet_main_t *vnm = lgm->vnet_main;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1;
-  clib_error_t * error = 0;
-  u8 * locator_set_name = 0;
+  clib_error_t *error = 0;
+  u8 *locator_set_name = 0;
   u8 locator_set_name_set = 0;
-  locator_t locator, * locators = 0;
-  vnet_lisp_add_del_locator_set_args_t _a, * a = &_a;
+  locator_t locator, *locators = 0;
+  vnet_lisp_add_del_locator_set_args_t _a, *a = &_a;
   u32 ls_index = 0;
 
-  memset(&locator, 0, sizeof(locator));
-  memset(a, 0, sizeof(a[0]));
+  memset (&locator, 0, sizeof (locator));
+  memset (a, 0, sizeof (a[0]));
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "add"))
-        is_add = 1;
+       is_add = 1;
       else if (unformat (line_input, "del"))
-        is_add = 0;
-      else if (unformat(line_input, "locator-set %_%v%_", &locator_set_name))
-        locator_set_name_set = 1;
+       is_add = 0;
+      else if (unformat (line_input, "locator-set %_%v%_", &locator_set_name))
+       locator_set_name_set = 1;
       else if (unformat (line_input, "iface %U p %d w %d",
-                         unformat_vnet_sw_interface, vnm, &locator.sw_if_index,
-                         &locator.priority, &locator.weight))
-        {
-          locator.local = 1;
-          vec_add1(locators, locator);
-        }
+                        unformat_vnet_sw_interface, vnm,
+                        &locator.sw_if_index, &locator.priority,
+                        &locator.weight))
+       {
+         locator.local = 1;
+         vec_add1 (locators, locator);
+       }
       else
-        {
-          error = unformat_parse_error(line_input);
-          goto done;
-        }
+       {
+         error = unformat_parse_error (line_input);
+         goto done;
+       }
     }
 
   if (!locator_set_name_set)
     {
-      error = clib_error_return(0, "locator_set name not set!");
+      error = clib_error_return (0, "locator_set name not set!");
       goto done;
-  }
+    }
 
   a->name = locator_set_name;
   a->locators = locators;
   a->is_add = is_add;
   a->local = 1;
 
-  vnet_lisp_add_del_locator(a, 0, &ls_index);
+  vnet_lisp_add_del_locator (a, 0, &ls_index);
 
- done:
-  vec_free(locators);
+done:
+  vec_free (locators);
   vec_free (locator_set_name);
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_cp_add_del_locator_in_set_command) = {
     .path = "lisp locator",
     .short_help = "lisp locator add/del locator-set <name> iface <iface-name> "
                   "p <priority> w <weight>",
     .function = lisp_add_del_locator_in_set_command_fn,
 };
+/* *INDENT-ON* */
 
 static clib_error_t *
 lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm,
-                                      unformat_input_t * input,
-                                      vlib_cli_command_t * cmd)
+                                     unformat_input_t * input,
+                                     vlib_cli_command_t * cmd)
 {
-  locator_set_t * lsit;
-  locator_t * loc;
-  u32 * locit;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
+  locator_set_t *lsit;
+  locator_t *loc;
+  u32 *locit;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
 
-  vlib_cli_output (vm, "%=20s%=16s%=16s%=16s", "Locator-set", "Locator",
-                   "Priority", "Weight");
+  vlib_cli_output (vm, "%s%=16s%=16s%=16s", "Locator-set", "Locator",
+                  "Priority", "Weight");
+
+  /* *INDENT-OFF* */
   pool_foreach (lsit, lcm->locator_set_pool,
   ({
     u8 * msg = 0;
     int next_line = 0;
     if (lsit->local)
       {
-        msg = format (msg, "%=16v", lsit->name);
+        msg = format (msg, "%v", lsit->name);
       }
     else
       {
-        msg = format (msg, "%=16s", "remote");
+        msg = format (msg, "<%s-%d>", "remote", lsit - lcm->locator_set_pool);
       }
     vec_foreach (locit, lsit->locator_indices)
       {
@@ -2134,21 +2445,40 @@ lisp_cp_show_locator_sets_command_fn (vlib_main_t * vm,
     vlib_cli_output (vm, "%v", msg);
     vec_free (msg);
   }));
+  /* *INDENT-ON* */
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_cp_show_locator_sets_command) = {
     .path = "show lisp locator-set",
     .short_help = "Shows locator-sets",
     .function = lisp_cp_show_locator_sets_command_fn,
 };
+/* *INDENT-ON* */
+
+static map_resolver_t *
+get_map_resolver (ip_address_t * a)
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  map_resolver_t *mr;
+
+  vec_foreach (mr, lcm->map_resolvers)
+  {
+    if (!ip_address_cmp (&mr->address, a))
+      {
+       return mr;
+      }
+  }
+  return 0;
+}
 
 int
 vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  ip_address_t * addr;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
   u32 i;
+  map_resolver_t _mr, *mr = &_mr;
 
   if (vnet_lisp_enable_disable_status () == 0)
     {
@@ -2158,66 +2488,73 @@ vnet_lisp_add_del_map_resolver (vnet_lisp_add_del_map_resolver_args_t * a)
 
   if (a->is_add)
     {
-      vec_foreach(addr, lcm->map_resolvers)
-        {
-          if (!ip_address_cmp (addr, &a->address))
-            {
-              clib_warning("map-resolver %U already exists!", format_ip_address,
-                           &a->address);
-              return -1;
-            }
-        }
-      vec_add1(lcm->map_resolvers, a->address);
+
+      if (get_map_resolver (&a->address))
+       {
+         clib_warning ("map-resolver %U already exists!", format_ip_address,
+                       &a->address);
+         return -1;
+       }
+
+      memset (mr, 0, sizeof (*mr));
+      ip_address_copy (&mr->address, &a->address);
+      vec_add1 (lcm->map_resolvers, *mr);
+
+      if (vec_len (lcm->map_resolvers) == 1)
+       lcm->do_map_resolver_election = 1;
     }
   else
     {
-      for (i = 0; i < vec_len(lcm->map_resolvers); i++)
-        {
-          addr = vec_elt_at_index(lcm->map_resolvers, i);
-          if (!ip_address_cmp (addr, &a->address))
-            {
-              vec_delete(lcm->map_resolvers, 1, i);
-              break;
-            }
-        }
+      for (i = 0; i < vec_len (lcm->map_resolvers); i++)
+       {
+         mr = vec_elt_at_index (lcm->map_resolvers, i);
+         if (!ip_address_cmp (&mr->address, &a->address))
+           {
+             if (!ip_address_cmp (&mr->address, &lcm->active_map_resolver))
+               lcm->do_map_resolver_election = 1;
+
+             vec_del1 (lcm->map_resolvers, i);
+             break;
+           }
+       }
     }
   return 0;
 }
 
 static clib_error_t *
 lisp_add_del_map_resolver_command_fn (vlib_main_t * vm,
-                                      unformat_input_t * input,
-                                      vlib_cli_command_t * cmd)
+                                     unformat_input_t * input,
+                                     vlib_cli_command_t * cmd)
 {
-  unformat_input_t _line_input, * line_input = &_line_input;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1, addr_set = 0;
   ip_address_t ip_addr;
-  clib_error_t * error = 0;
+  clib_error_t *error = 0;
   int rv = 0;
-  vnet_lisp_add_del_map_resolver_args_t _a, * a = &_a;
+  vnet_lisp_add_del_map_resolver_args_t _a, *a = &_a;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "add"))
-        is_add = 1;
+       is_add = 1;
       else if (unformat (line_input, "del"))
-        is_add = 0;
+       is_add = 0;
       else if (unformat (line_input, "%U", unformat_ip_address, &ip_addr))
-        addr_set = 1;
+       addr_set = 1;
       else
-        {
-          error = unformat_parse_error(line_input);
-          goto done;
-        }
+       {
+         error = unformat_parse_error (line_input);
+         goto done;
+       }
     }
 
   if (!addr_set)
     {
-      error = clib_error_return(0, "Map-resolver address must be set!");
+      error = clib_error_return (0, "Map-resolver address must be set!");
       goto done;
     }
 
@@ -2226,40 +2563,42 @@ lisp_add_del_map_resolver_command_fn (vlib_main_t * vm,
   rv = vnet_lisp_add_del_map_resolver (a);
   if (0 != rv)
     {
-      error = clib_error_return(0, "failed to %s map-resolver!",
-                                is_add ? "add" : "delete");
+      error = clib_error_return (0, "failed to %s map-resolver!",
+                                is_add ? "add" : "delete");
     }
 
- done:
+done:
   return error;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_add_del_map_resolver_command) = {
     .path = "lisp map-resolver",
     .short_help = "lisp map-resolver add/del <ip_address>",
     .function = lisp_add_del_map_resolver_command_fn,
 };
+/* *INDENT-ON* */
 
 int
 vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  uword * p = 0;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  uword *p = 0;
 
   if (vnet_lisp_enable_disable_status () == 0)
     {
-      clib_warning("LISP is disabled!");
+      clib_warning ("LISP is disabled!");
       return VNET_API_ERROR_LISP_DISABLED;
     }
 
   if (a->is_add)
     {
-      p = hash_get_mem(lcm->locator_set_index_by_name, a->locator_set_name);
+      p = hash_get_mem (lcm->locator_set_index_by_name, a->locator_set_name);
       if (!p)
-        {
-          clib_warning("locator-set %v doesn't exist", a->locator_set_name);
-          return VNET_API_ERROR_INVALID_ARGUMENT;
-        }
+       {
+         clib_warning ("locator-set %v doesn't exist", a->locator_set_name);
+         return VNET_API_ERROR_INVALID_ARGUMENT;
+       }
 
       lcm->mreq_itr_rlocs = p[0];
     }
@@ -2273,31 +2612,31 @@ vnet_lisp_add_del_mreq_itr_rlocs (vnet_lisp_add_del_mreq_itr_rloc_args_t * a)
 
 static clib_error_t *
 lisp_add_del_mreq_itr_rlocs_command_fn (vlib_main_t * vm,
-                                        unformat_input_t * input,
-                                        vlib_cli_command_t * cmd)
+                                       unformat_input_t * input,
+                                       vlib_cli_command_t * cmd)
 {
-  unformat_input_t _line_input, * line_input = &_line_input;
+  unformat_input_t _line_input, *line_input = &_line_input;
   u8 is_add = 1;
-  u8 * locator_set_name = 0;
-  clib_error_t * error = 0;
+  u8 *locator_set_name = 0;
+  clib_error_t *error = 0;
   int rv = 0;
-  vnet_lisp_add_del_mreq_itr_rloc_args_t _a, * a = &_a;
+  vnet_lisp_add_del_mreq_itr_rloc_args_t _a, *a = &_a;
 
   /* Get a line of input. */
-  if (! unformat_user (input, unformat_line_input, line_input))
+  if (!unformat_user (input, unformat_line_input, line_input))
     return 0;
 
   while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
     {
       if (unformat (line_input, "del"))
-        is_add = 0;
-      else if (unformat (line_input, "add %s", &locator_set_name))
-        is_add = 1;
+       is_add = 0;
+      else if (unformat (line_input, "add %_%v%_", &locator_set_name))
+       is_add = 1;
       else
-        {
-          error = unformat_parse_error(line_input);
-          goto done;
-        }
+       {
+         error = unformat_parse_error (line_input);
+         goto done;
+       }
     }
 
   a->is_add = is_add;
@@ -2305,30 +2644,32 @@ lisp_add_del_mreq_itr_rlocs_command_fn (vlib_main_t * vm,
   rv = vnet_lisp_add_del_mreq_itr_rlocs (a);
   if (0 != rv)
     {
-      error = clib_error_return(0, "failed to %s map-request itr-rlocs!",
-                                is_add ? "add" : "delete");
+      error = clib_error_return (0, "failed to %s map-request itr-rlocs!",
+                                is_add ? "add" : "delete");
     }
 
-  vec_free(locator_set_name);
+  vec_free (locator_set_name);
 
- done:
+done:
   return error;
 
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_add_del_map_request_command) = {
     .path = "lisp map-request itr-rlocs",
     .short_help = "lisp map-request itr-rlocs add/del <locator_set_name>",
     .function = lisp_add_del_mreq_itr_rlocs_command_fn,
 };
+/* *INDENT-ON* */
 
 static clib_error_t *
 lisp_show_mreq_itr_rlocs_command_fn (vlib_main_t * vm,
-                                    unformat_input_t * input,
-                                    vlib_cli_command_t * cmd)
+                                    unformat_input_t * input,
+                                    vlib_cli_command_t * cmd)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  locator_set_t * loc_set;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  locator_set_t *loc_set;
 
   vlib_cli_output (vm, "%=20s", "itr-rlocs");
 
@@ -2344,18 +2685,20 @@ lisp_show_mreq_itr_rlocs_command_fn (vlib_main_t * vm,
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (lisp_show_map_request_command) = {
     .path = "show lisp map-request itr-rlocs",
     .short_help = "Shows map-request itr-rlocs",
     .function = lisp_show_mreq_itr_rlocs_command_fn,
 };
+/* *INDENT-ON* */
 
 /* Statistics (not really errors) */
 #define foreach_lisp_cp_lookup_error           \
 _(DROP, "drop")                                \
 _(MAP_REQUESTS_SENT, "map-request sent")
 
-static char * lisp_cp_lookup_error_strings[] = {
+static char *lisp_cp_lookup_error_strings[] = {
 #define _(sym,string) string,
   foreach_lisp_cp_lookup_error
 #undef _
@@ -2364,7 +2707,7 @@ static char * lisp_cp_lookup_error_strings[] = {
 typedef enum
 {
 #define _(sym,str) LISP_CP_LOOKUP_ERROR_##sym,
-    foreach_lisp_cp_lookup_error
+  foreach_lisp_cp_lookup_error
 #undef _
     LISP_CP_LOOKUP_N_ERROR,
 } lisp_cp_lookup_error_t;
@@ -2372,8 +2715,6 @@ typedef enum
 typedef enum
 {
   LISP_CP_LOOKUP_NEXT_DROP,
-  LISP_CP_LOOKUP_NEXT_IP4_LOOKUP,
-  LISP_CP_LOOKUP_NEXT_IP6_LOOKUP,
   LISP_CP_LOOKUP_N_NEXT,
 } lisp_cp_lookup_next_t;
 
@@ -2388,61 +2729,68 @@ format_lisp_cp_lookup_trace (u8 * s, va_list * args)
 {
   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  lisp_cp_lookup_trace_t * t = va_arg (*args, lisp_cp_lookup_trace_t *);
+  lisp_cp_lookup_trace_t *t = va_arg (*args, lisp_cp_lookup_trace_t *);
 
   s = format (s, "LISP-CP-LOOKUP: map-resolver: %U destination eid %U",
-              format_ip_address, &t->map_resolver_ip, format_gid_address,
-              &t->dst_eid);
+             format_ip_address, &t->map_resolver_ip, format_gid_address,
+             &t->dst_eid);
   return s;
 }
 
 int
 get_mr_and_local_iface_ip (lisp_cp_main_t * lcm, ip_address_t * mr_ip,
-                           ip_address_t * sloc)
+                          ip_address_t * sloc)
 {
-  ip_address_t * mrit;
+  map_resolver_t *mrit;
+  ip_address_t *a;
 
-  if (vec_len(lcm->map_resolvers) == 0)
+  if (vec_len (lcm->map_resolvers) == 0)
     {
-      clib_warning("No map-resolver configured");
+      clib_warning ("No map-resolver configured");
       return 0;
     }
 
   /* find the first mr ip we have a route to and the ip of the
    * iface that has a route to it */
-  vec_foreach(mrit, lcm->map_resolvers)
-    {
-      if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, mrit, sloc)) {
-          ip_address_copy(mr_ip, mrit);
-          return 1;
+  vec_foreach (mrit, lcm->map_resolvers)
+  {
+    a = &mrit->address;
+    if (0 != ip_fib_get_first_egress_ip_for_dst (lcm, a, sloc))
+      {
+       ip_address_copy (mr_ip, a);
+
+       /* also update globals */
+       return 1;
       }
-    }
+  }
 
-  clib_warning("Can't find map-resolver and local interface ip!");
+  clib_warning ("Can't find map-resolver and local interface ip!");
   return 0;
 }
 
 static gid_address_t *
 build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
 {
-  void * addr;
+  void *addr;
   u32 i;
-  locator_t * loc;
-  u32 * loc_indexp;
-  ip_interface_address_t * ia = 0;
-  gid_address_t gid_data, * gid = &gid_data;
-  gid_address_t * rlocs = 0;
-  ip_prefix_t * ippref = &gid_address_ippref (gid);
-  ip_address_t * rloc = &ip_prefix_addr (ippref);
+  locator_t *loc;
+  u32 *loc_indexp;
+  ip_interface_address_t *ia = 0;
+  gid_address_t gid_data, *gid = &gid_data;
+  gid_address_t *rlocs = 0;
+  ip_prefix_t *ippref = &gid_address_ippref (gid);
+  ip_address_t *rloc = &ip_prefix_addr (ippref);
 
   memset (gid, 0, sizeof (gid[0]));
   gid_address_type (gid) = GID_ADDR_IP_PREFIX;
-  for (i = 0; i < vec_len(loc_set->locator_indices); i++)
+  for (i = 0; i < vec_len (loc_set->locator_indices); i++)
     {
-      loc_indexp = vec_elt_at_index(loc_set->locator_indices, i);
+      loc_indexp = vec_elt_at_index (loc_set->locator_indices, i);
       loc = pool_elt_at_index (lcm->locator_pool, loc_indexp[0]);
 
       /* Add ipv4 locators first TODO sort them */
+
+      /* *INDENT-OFF* */
       foreach_ip_interface_address (&lcm->im4->lookup_main, ia,
                                    loc->sw_if_index, 1 /* unnumbered */,
       ({
@@ -2463,20 +2811,23 @@ build_itr_rloc_list (lisp_cp_main_t * lcm, locator_set_t * loc_set)
         ip_prefix_normalize (ippref);
         vec_add1 (rlocs, gid[0]);
       }));
+      /* *INDENT-ON* */
+
     }
   return rlocs;
 }
 
 static vlib_buffer_t *
-build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
-                                gid_address_t * seid, gid_address_t * deid,
-                                locator_set_t * loc_set, ip_address_t * mr_ip,
-                                ip_address_t * sloc, u8 is_smr_invoked,
-                                u64 *nonce_res, u32 * bi_res)
+build_encapsulated_map_request (lisp_cp_main_t * lcm,
+                               gid_address_t * seid, gid_address_t * deid,
+                               locator_set_t * loc_set, ip_address_t * mr_ip,
+                               ip_address_t * sloc, u8 is_smr_invoked,
+                               u64 * nonce_res, u32 * bi_res)
 {
-  vlib_buffer_t * b;
+  vlib_buffer_t *b;
   u32 bi;
-  gid_address_t * rlocs = 0;
+  gid_address_t *rlocs = 0;
+  vlib_main_t *vm = lcm->vlib_main;
 
   if (vlib_buffer_alloc (vm, &bi, 1) != 1)
     {
@@ -2492,56 +2843,121 @@ build_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
   /* get rlocs */
   rlocs = build_itr_rloc_list (lcm, loc_set);
 
-  /* put lisp msg */
-  lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked, nonce_res);
+  if (MR_MODE_SRC_DST == lcm->map_request_mode)
+    {
+      gid_address_t sd;
+      memset (&sd, 0, sizeof (sd));
+      build_src_dst (&sd, seid, deid);
+      lisp_msg_put_mreq (lcm, b, seid, &sd, rlocs, is_smr_invoked, nonce_res);
+    }
+  else
+    {
+      /* put lisp msg */
+      lisp_msg_put_mreq (lcm, b, seid, deid, rlocs, is_smr_invoked,
+                        nonce_res);
+    }
 
   /* push ecm: udp-ip-lisp */
   lisp_msg_push_ecm (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, seid, deid);
 
   /* push outer ip header */
   pkt_push_udp_and_ip (vm, b, LISP_CONTROL_PORT, LISP_CONTROL_PORT, sloc,
-                       mr_ip);
+                      mr_ip);
 
   bi_res[0] = bi;
 
-  vec_free(rlocs);
+  vec_free (rlocs);
   return b;
 }
 
 static void
-send_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
-                               gid_address_t * seid, gid_address_t * deid,
-                               u8 is_smr_invoked)
+reset_pending_mr_counters (pending_map_request_t * r)
 {
-  u32 next_index, bi = 0, * to_next, map_index;
-  vlib_buffer_t * b;
-  vlib_frame_t * f;
+  r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
+  r->retries_num = 0;
+}
+
+static int
+elect_map_resolver (lisp_cp_main_t * lcm)
+{
+  map_resolver_t *mr;
+
+  vec_foreach (mr, lcm->map_resolvers)
+  {
+    if (!mr->is_down)
+      {
+       ip_address_copy (&lcm->active_map_resolver, &mr->address);
+       lcm->do_map_resolver_election = 0;
+       return 1;
+      }
+  }
+  return 0;
+}
+
+#define send_encapsulated_map_request(lcm, seid, deid, smr) \
+  _send_encapsulated_map_request(lcm, seid, deid, smr, 0)
+
+#define resend_encapsulated_map_request(lcm, seid, deid, smr) \
+  _send_encapsulated_map_request(lcm, seid, deid, smr, 1)
+
+static int
+_send_encapsulated_map_request (lisp_cp_main_t * lcm,
+                               gid_address_t * seid, gid_address_t * deid,
+                               u8 is_smr_invoked, u8 is_resend)
+{
+  map_resolver_t *mr;
+  u32 next_index, bi = 0, *to_next, map_index;
+  vlib_buffer_t *b;
+  vlib_frame_t *f;
   u64 nonce = 0;
-  locator_set_t * loc_set;
-  mapping_t * map;
-  pending_map_request_t * pmr;
-  ip_address_t mr_ip, sloc;
+  locator_set_t *loc_set;
+  mapping_t *map;
+  pending_map_request_t *pmr, *duplicate_pmr = 0;
+  ip_address_t sloc;
   u32 ls_index;
 
+  ASSERT (*lcm->pending_map_request_lock);
+
+  /* if there is already a pending request remember it */
+
+  /* *INDENT-OFF* */
+  pool_foreach(pmr, lcm->pending_map_requests_pool,
+  ({
+    if (!gid_address_cmp (&pmr->src, seid)
+        && !gid_address_cmp (&pmr->dst, deid))
+      {
+        duplicate_pmr = pmr;
+        break;
+      }
+  }));
+  /* *INDENT-ON* */
+
+  if (!is_resend && duplicate_pmr)
+    {
+      /* don't send the request if there is a pending map request already */
+      return 0;
+    }
+
   /* get locator-set for seid */
   if (!lcm->lisp_pitr)
     {
       map_index = gid_dictionary_lookup (&lcm->mapping_index_by_gid, seid);
       if (map_index == ~0)
-        {
-          clib_warning("No local mapping found in eid-table for %U!",
-                       format_gid_address, seid);
-          return;
-        }
+       {
+         clib_warning ("No local mapping found in eid-table for %U!",
+                       format_gid_address, seid);
+         return -1;
+       }
 
       map = pool_elt_at_index (lcm->mapping_pool, map_index);
 
       if (!map->local)
-        {
-          clib_warning("Mapping found for src eid %U is not marked as local!",
-                       format_gid_address, seid);
-          return;
-        }
+       {
+         clib_warning
+           ("Mapping found for src eid %U is not marked as local!",
+            format_gid_address, seid);
+         return -1;
+       }
       ls_index = map->locator_set_index;
     }
   else
@@ -2559,84 +2975,110 @@ send_encapsulated_map_request (vlib_main_t * vm, lisp_cp_main_t *lcm,
 
   loc_set = pool_elt_at_index (lcm->locator_set_pool, ls_index);
 
-  /* get local iface ip to use in map-request */
-  if (0 == get_mr_and_local_iface_ip (lcm, &mr_ip, &sloc))
-    return;
+  while (lcm->do_map_resolver_election
+        | (0 == ip_fib_get_first_egress_ip_for_dst (lcm,
+                                                    &lcm->active_map_resolver,
+                                                    &sloc)))
+    {
+      if (0 == elect_map_resolver (lcm))
+       /* all Mrs are down */
+       {
+         if (duplicate_pmr)
+           duplicate_pmr->to_be_removed = 1;
+
+         /* restart MR checking by marking all of them up */
+         vec_foreach (mr, lcm->map_resolvers) mr->is_down = 0;
+
+         return -1;
+       }
+    }
 
   /* build the encapsulated map request */
-  b = build_encapsulated_map_request (vm, lcm, seid, deid, loc_set, &mr_ip,
-                                      &sloc, is_smr_invoked, &nonce, &bi);
+  b = build_encapsulated_map_request (lcm, seid, deid, loc_set,
+                                     &lcm->active_map_resolver,
+                                     &sloc, is_smr_invoked, &nonce, &bi);
 
   if (!b)
-    return;
+    return -1;
 
   /* set fib index to default and lookup node */
-  vnet_buffer(b)->sw_if_index[VLIB_TX] = 0;
-  next_index = (ip_addr_version(&mr_ip) == IP4) ?
-      ip4_lookup_node.index : ip6_lookup_node.index;
+  vnet_buffer (b)->sw_if_index[VLIB_TX] = 0;
+  next_index = (ip_addr_version (&lcm->active_map_resolver) == IP4) ?
+    ip4_lookup_node.index : ip6_lookup_node.index;
 
-  f = vlib_get_frame_to_node (vm, next_index);
+  f = vlib_get_frame_to_node (lcm->vlib_main, next_index);
 
   /* Enqueue the packet */
   to_next = vlib_frame_vector_args (f);
   to_next[0] = bi;
   f->n_vectors = 1;
-  vlib_put_frame_to_node (vm, next_index, f);
+  vlib_put_frame_to_node (lcm->vlib_main, next_index, f);
+
+  if (duplicate_pmr)
+    /* if there is a pending request already update it */
+    {
+      if (clib_fifo_elts (duplicate_pmr->nonces) >= PENDING_MREQ_QUEUE_LEN)
+       {
+         /* remove the oldest nonce */
+         u64 CLIB_UNUSED (tmp), *nonce_del;
+         nonce_del = clib_fifo_head (duplicate_pmr->nonces);
+         hash_unset (lcm->pending_map_requests_by_nonce, nonce_del[0]);
+         clib_fifo_sub1 (duplicate_pmr->nonces, tmp);
+       }
+
+      clib_fifo_add1 (duplicate_pmr->nonces, nonce);
+      hash_set (lcm->pending_map_requests_by_nonce, nonce,
+               duplicate_pmr - lcm->pending_map_requests_pool);
+    }
+  else
+    {
+      /* add map-request to pending requests table */
+      pool_get (lcm->pending_map_requests_pool, pmr);
+      memset (pmr, 0, sizeof (*pmr));
+      gid_address_copy (&pmr->src, seid);
+      gid_address_copy (&pmr->dst, deid);
+      clib_fifo_add1 (pmr->nonces, nonce);
+      pmr->is_smr_invoked = is_smr_invoked;
+      reset_pending_mr_counters (pmr);
+      hash_set (lcm->pending_map_requests_by_nonce, nonce,
+               pmr - lcm->pending_map_requests_pool);
+    }
 
-  /* add map-request to pending requests table */
-  pool_get(lcm->pending_map_requests_pool, pmr);
-  gid_address_copy (&pmr->src, seid);
-  gid_address_copy (&pmr->dst, deid);
-  hash_set(lcm->pending_map_requests_by_nonce, nonce,
-           pmr - lcm->pending_map_requests_pool);
+  return 0;
 }
 
 static void
-get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t *dst)
+get_src_and_dst_ip (void *hdr, ip_address_t * src, ip_address_t * dst)
 {
-  ip4_header_t * ip4 = hdr;
-  ip6_header_t * ip6;
+  ip4_header_t *ip4 = hdr;
+  ip6_header_t *ip6;
 
   if ((ip4->ip_version_and_header_length & 0xF0) == 0x40)
     {
-      ip_address_set(src, &ip4->src_address, IP4);
-      ip_address_set(dst, &ip4->dst_address, IP4);
+      ip_address_set (src, &ip4->src_address, IP4);
+      ip_address_set (dst, &ip4->dst_address, IP4);
     }
   else
     {
       ip6 = hdr;
-      ip_address_set(src, &ip6->src_address, IP6);
-      ip_address_set(dst, &ip6->dst_address, IP6);
+      ip_address_set (src, &ip6->src_address, IP6);
+      ip_address_set (dst, &ip6->dst_address, IP6);
     }
 }
 
 static u32
 lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
-                             u8 version)
+                            u8 version)
 {
-  uword * vnip;
-  u32 vni = ~0, table_id = ~0, fib_index;
+  uword *vnip;
+  u32 vni = ~0, table_id = ~0;
 
-  if (version == IP4)
-    {
-      ip4_fib_t * fib;
-      ip4_main_t * im4 = &ip4_main;
-      fib_index = vec_elt (im4->fib_index_by_sw_if_index,
-                           vnet_buffer (b)->sw_if_index[VLIB_RX]);
-      fib = find_ip4_fib_by_table_index_or_id (im4, fib_index,
-                                               IP4_ROUTE_FLAG_FIB_INDEX);
-      table_id = fib->table_id;
-    }
-  else
-    {
-      ip6_fib_t * fib;
-      ip6_main_t * im6 = &ip6_main;
-      fib_index = vec_elt (im6->fib_index_by_sw_if_index,
-                           vnet_buffer (b)->sw_if_index[VLIB_RX]);
-      fib = find_ip6_fib_by_table_index_or_id (im6, fib_index,
-                                               IP6_ROUTE_FLAG_FIB_INDEX);
-      table_id = fib->table_id;
-    }
+  table_id = fib_table_get_table_id_for_sw_if_index ((version ==
+                                                     IP4 ? FIB_PROTOCOL_IP4 :
+                                                     FIB_PROTOCOL_IP6),
+                                                    vnet_buffer
+                                                    (b)->sw_if_index
+                                                    [VLIB_RX]);
 
   vnip = hash_get (lcm->vni_by_table_id, table_id);
   if (vnip)
@@ -2650,52 +3092,54 @@ lisp_get_vni_from_buffer_ip (lisp_cp_main_t * lcm, vlib_buffer_t * b,
 always_inline u32
 lisp_get_vni_from_buffer_eth (lisp_cp_main_t * lcm, vlib_buffer_t * b)
 {
-  uword * vnip;
+  uword *vnip;
   u32 vni = ~0;
   u32 sw_if_index0;
 
-  l2input_main_t * l2im = &l2input_main;
-  l2_input_config_t * config;
-  l2_bridge_domain_t * bd_config;
+  l2input_main_t *l2im = &l2input_main;
+  l2_input_config_t *config;
+  l2_bridge_domain_t *bd_config;
 
-  sw_if_index0 = vnet_buffer(b)->sw_if_index[VLIB_RX];
-  config = vec_elt_at_index(l2im->configs, sw_if_index0);
+  sw_if_index0 = vnet_buffer (b)->sw_if_index[VLIB_RX];
+  config = vec_elt_at_index (l2im->configs, sw_if_index0);
   bd_config = vec_elt_at_index (l2im->bd_configs, config->bd_index);
 
   vnip = hash_get (lcm->vni_by_bd_id, bd_config->bd_id);
   if (vnip)
     vni = vnip[0];
   else
-    clib_warning("bridge domain %d is not mapped to any vni!",
-                 config->bd_index);
+    clib_warning ("bridge domain %d is not mapped to any vni!",
+                 config->bd_index);
 
   return vni;
 }
 
 always_inline void
-get_src_and_dst_eids_from_buffer (lisp_cp_main_t *lcm, vlib_buffer_t * b,
-                                  gid_address_t * src, gid_address_t * dst)
+get_src_and_dst_eids_from_buffer (lisp_cp_main_t * lcm, vlib_buffer_t * b,
+                                 gid_address_t * src, gid_address_t * dst)
 {
   u32 vni = 0;
   u16 type;
 
-  type = vnet_buffer(b)->lisp.overlay_afi;
+  memset (src, 0, sizeof (*src));
+  memset (dst, 0, sizeof (*dst));
+  type = vnet_buffer (b)->lisp.overlay_afi;
 
   if (LISP_AFI_IP == type || LISP_AFI_IP6 == type)
     {
-      ip4_header_t * ip;
+      ip4_header_t *ip;
       u8 version, preflen;
 
-      gid_address_type(src) = GID_ADDR_IP_PREFIX;
-      gid_address_type(dst) = GID_ADDR_IP_PREFIX;
+      gid_address_type (src) = GID_ADDR_IP_PREFIX;
+      gid_address_type (dst) = GID_ADDR_IP_PREFIX;
 
       ip = vlib_buffer_get_current (b);
-      get_src_and_dst_ip (ip, &gid_address_ip(src), &gid_address_ip(dst));
+      get_src_and_dst_ip (ip, &gid_address_ip (src), &gid_address_ip (dst));
 
-      version = gid_address_ip_version(src);
+      version = gid_address_ip_version (src);
       preflen = ip_address_max_len (version);
-      gid_address_ippref_len(src) = preflen;
-      gid_address_ippref_len(dst) = preflen;
+      gid_address_ippref_len (src) = preflen;
+      gid_address_ippref_len (dst) = preflen;
 
       vni = lisp_get_vni_from_buffer_ip (lcm, b, version);
       gid_address_vni (dst) = vni;
@@ -2703,14 +3147,14 @@ get_src_and_dst_eids_from_buffer (lisp_cp_main_t *lcm, vlib_buffer_t * b,
     }
   else if (LISP_AFI_MAC == type)
     {
-      ethernet_header_t * eh;
+      ethernet_header_t *eh;
 
       eh = vlib_buffer_get_current (b);
 
-      gid_address_type(src) = GID_ADDR_MAC;
-      gid_address_type(dst) = GID_ADDR_MAC;
-      mac_copy(&gid_address_mac(src), eh->src_address);
-      mac_copy(&gid_address_mac(dst), eh->dst_address);
+      gid_address_type (src) = GID_ADDR_MAC;
+      gid_address_type (dst) = GID_ADDR_MAC;
+      mac_copy (&gid_address_mac (src), eh->src_address);
+      mac_copy (&gid_address_mac (dst), eh->dst_address);
 
       /* get vni */
       vni = lisp_get_vni_from_buffer_eth (lcm, b);
@@ -2721,11 +3165,12 @@ get_src_and_dst_eids_from_buffer (lisp_cp_main_t *lcm, vlib_buffer_t * b,
 }
 
 static uword
-lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
-              vlib_frame_t * from_frame)
+lisp_cp_lookup_inline (vlib_main_t * vm,
+                      vlib_node_runtime_t * node,
+                      vlib_frame_t * from_frame, int overlay)
 {
-  u32 * from, * to_next_drop, di, si;
-  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main();
+  u32 *from, *to_next_drop, di, si;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
   u32 pkts_mapped = 0;
   uword n_left_from, n_left_to_next_drop;
 
@@ -2735,87 +3180,110 @@ lisp_cp_lookup (vlib_main_t * vm, vlib_node_runtime_t * node,
   while (n_left_from > 0)
     {
       vlib_get_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
-                           to_next_drop, n_left_to_next_drop);
+                          to_next_drop, n_left_to_next_drop);
 
       while (n_left_from > 0 && n_left_to_next_drop > 0)
-        {
-          u32 pi0;
-          vlib_buffer_t * b0;
-          gid_address_t src, dst;
-
-          pi0 = from[0];
-          from += 1;
-          n_left_from -= 1;
-          to_next_drop[0] = pi0;
-          to_next_drop += 1;
-          n_left_to_next_drop -= 1;
-
-          b0 = vlib_get_buffer (vm, pi0);
-          b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
-
-          /* src/dst eid pair */
-          get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst);
-
-          /* if we have remote mapping for destination already in map-chache
-             add forwarding tunnel directly. If not send a map-request */
-          di = gid_dictionary_lookup (&lcm->mapping_index_by_gid, &dst);
-          if (~0 != di)
-            {
-              mapping_t * m =  vec_elt_at_index (lcm->mapping_pool, di);
-              /* send a map-request also in case of negative mapping entry
-                with corresponding action */
-              if (m->action == LISP_SEND_MAP_REQUEST)
-                {
-                  /* send map-request */
-                  send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
-                  pkts_mapped++;
-                }
-              else
-                {
-                  si =  gid_dictionary_lookup (&lcm->mapping_index_by_gid,
-                                               &src);
-                  if (~0 != si)
-                    {
-                      dp_add_fwd_entry (lcm, si, di);
-                    }
-                }
-            }
-          else
-            {
-              /* send map-request */
-              send_encapsulated_map_request (vm, lcm, &src, &dst, 0);
-              pkts_mapped++;
-            }
-
-          if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
-            {
-              lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
-                                                          sizeof(*tr));
-
-              memset(tr, 0, sizeof(*tr));
-              gid_address_copy (&tr->dst_eid, &dst);
-              if (vec_len(lcm->map_resolvers) > 0)
-                {
-                  clib_memcpy (&tr->map_resolver_ip,
-                               vec_elt_at_index(lcm->map_resolvers, 0),
-                               sizeof(ip_address_t));
-                }
-            }
-          gid_address_free (&dst);
-          gid_address_free (&src);
-        }
-
-      vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP, n_left_to_next_drop);
+       {
+         u32 pi0;
+         vlib_buffer_t *b0;
+         gid_address_t src, dst;
+
+         pi0 = from[0];
+         from += 1;
+         n_left_from -= 1;
+         to_next_drop[0] = pi0;
+         to_next_drop += 1;
+         n_left_to_next_drop -= 1;
+
+         b0 = vlib_get_buffer (vm, pi0);
+         b0->error = node->errors[LISP_CP_LOOKUP_ERROR_DROP];
+         vnet_buffer (b0)->lisp.overlay_afi = overlay;
+
+         /* src/dst eid pair */
+         get_src_and_dst_eids_from_buffer (lcm, b0, &src, &dst);
+
+         /* if we have remote mapping for destination already in map-chache
+            add forwarding tunnel directly. If not send a map-request */
+         di = gid_dictionary_sd_lookup (&lcm->mapping_index_by_gid, &dst,
+                                        &src);
+         if (~0 != di)
+           {
+             mapping_t *m = vec_elt_at_index (lcm->mapping_pool, di);
+             /* send a map-request also in case of negative mapping entry
+                with corresponding action */
+             if (m->action == LISP_SEND_MAP_REQUEST)
+               {
+                 /* send map-request */
+                 queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
+                                    0 /* is_resend */ );
+                 pkts_mapped++;
+               }
+             else
+               {
+                 si = gid_dictionary_lookup (&lcm->mapping_index_by_gid,
+                                             &src);
+                 if (~0 != si)
+                   {
+                     dp_add_fwd_entry (lcm, si, di);
+                   }
+               }
+           }
+         else
+           {
+             /* send map-request */
+             queue_map_request (&src, &dst, 0 /* smr_invoked */ ,
+                                0 /* is_resend */ );
+             pkts_mapped++;
+           }
+
+         if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+           {
+             lisp_cp_lookup_trace_t *tr = vlib_add_trace (vm, node, b0,
+                                                          sizeof (*tr));
+
+             memset (tr, 0, sizeof (*tr));
+             gid_address_copy (&tr->dst_eid, &dst);
+             ip_address_copy (&tr->map_resolver_ip,
+                              &lcm->active_map_resolver);
+           }
+         gid_address_free (&dst);
+         gid_address_free (&src);
+       }
+
+      vlib_put_next_frame (vm, node, LISP_CP_LOOKUP_NEXT_DROP,
+                          n_left_to_next_drop);
     }
   vlib_node_increment_counter (vm, node->node_index,
-                               LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
-                               pkts_mapped);
+                              LISP_CP_LOOKUP_ERROR_MAP_REQUESTS_SENT,
+                              pkts_mapped);
   return from_frame->n_vectors;
 }
 
-VLIB_REGISTER_NODE (lisp_cp_lookup_node) = {
-  .function = lisp_cp_lookup,
-  .name = "lisp-cp-lookup",
+static uword
+lisp_cp_lookup_ip4 (vlib_main_t * vm,
+                   vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP));
+}
+
+static uword
+lisp_cp_lookup_ip6 (vlib_main_t * vm,
+                   vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_IP6));
+}
+
+static uword
+lisp_cp_lookup_l2 (vlib_main_t * vm,
+                  vlib_node_runtime_t * node, vlib_frame_t * from_frame)
+{
+  return (lisp_cp_lookup_inline (vm, node, from_frame, LISP_AFI_MAC));
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_ip4_node) = {
+  .function = lisp_cp_lookup_ip4,
+  .name = "lisp-cp-lookup-ip4",
   .vector_size = sizeof (u32),
   .format_trace = format_lisp_cp_lookup_trace,
   .type = VLIB_NODE_TYPE_INTERNAL,
@@ -2827,17 +3295,54 @@ VLIB_REGISTER_NODE (lisp_cp_lookup_node) = {
 
   .next_nodes = {
       [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
-      [LISP_CP_LOOKUP_NEXT_IP4_LOOKUP] = "ip4-lookup",
-      [LISP_CP_LOOKUP_NEXT_IP6_LOOKUP] = "ip6-lookup",
   },
 };
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_ip6_node) = {
+  .function = lisp_cp_lookup_ip6,
+  .name = "lisp-cp-lookup-ip6",
+  .vector_size = sizeof (u32),
+  .format_trace = format_lisp_cp_lookup_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = LISP_CP_LOOKUP_N_ERROR,
+  .error_strings = lisp_cp_lookup_error_strings,
+
+  .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
+
+  .next_nodes = {
+      [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
+  },
+};
+/* *INDENT-ON* */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_cp_lookup_l2_node) = {
+  .function = lisp_cp_lookup_l2,
+  .name = "lisp-cp-lookup-l2",
+  .vector_size = sizeof (u32),
+  .format_trace = format_lisp_cp_lookup_trace,
+  .type = VLIB_NODE_TYPE_INTERNAL,
+
+  .n_errors = LISP_CP_LOOKUP_N_ERROR,
+  .error_strings = lisp_cp_lookup_error_strings,
+
+  .n_next_nodes = LISP_CP_LOOKUP_N_NEXT,
+
+  .next_nodes = {
+      [LISP_CP_LOOKUP_NEXT_DROP] = "error-drop",
+  },
+};
+/* *INDENT-ON* */
 
 /* lisp_cp_input statistics */
 #define foreach_lisp_cp_input_error                     \
 _(DROP, "drop")                                         \
 _(MAP_REPLIES_RECEIVED, "map-replies received")
 
-static char * lisp_cp_input_error_strings[] = {
+static char *lisp_cp_input_error_strings[] = {
 #define _(sym,string) string,
   foreach_lisp_cp_input_error
 #undef _
@@ -2846,7 +3351,7 @@ static char * lisp_cp_input_error_strings[] = {
 typedef enum
 {
 #define _(sym,str) LISP_CP_INPUT_ERROR_##sym,
-    foreach_lisp_cp_input_error
+  foreach_lisp_cp_input_error
 #undef _
     LISP_CP_INPUT_N_ERROR,
 } lisp_cp_input_error_t;
@@ -2868,94 +3373,111 @@ format_lisp_cp_input_trace (u8 * s, va_list * args)
 {
   CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
   CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
-  CLIB_UNUSED(lisp_cp_input_trace_t * t) = va_arg (*args, lisp_cp_input_trace_t *);
+  CLIB_UNUSED (lisp_cp_input_trace_t * t) =
+    va_arg (*args, lisp_cp_input_trace_t *);
 
   s = format (s, "LISP-CP-INPUT: TODO");
   return s;
 }
 
-void
-process_map_reply (lisp_cp_main_t * lcm, vlib_buffer_t * b)
+void *
+process_map_reply (void *arg)
 {
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  vlib_buffer_t *b = arg;
   u32 len = 0, i, ttl, dst_map_index = 0;
-  void * h;
-  pending_map_request_t * pmr;
+  void *h;
+  pending_map_request_t *pmr;
   locator_t probed;
-  map_reply_hdr_t * mrep_hdr;
-  u64 nonce;
+  map_reply_hdr_t *mrep_hdr;
+  u64 nonce, *noncep;
   gid_address_t deid;
-  uword * pmr_index;
+  uword *pmr_index;
   u8 authoritative, action;
-  locator_t * locators = 0, * loc;
+  locator_t *locators = 0, *loc;
 
   mrep_hdr = vlib_buffer_get_current (b);
 
+  lisp_pending_map_request_lock (lcm);
+
   /* Check pending requests table and nonce */
-  nonce = MREP_NONCE(mrep_hdr);
-  pmr_index = hash_get(lcm->pending_map_requests_by_nonce, nonce);
+  nonce = MREP_NONCE (mrep_hdr);
+  pmr_index = hash_get (lcm->pending_map_requests_by_nonce, nonce);
   if (!pmr_index)
     {
-      clib_warning("No pending map-request entry with nonce %lu!", nonce);
-      return;
+      clib_warning ("No pending map-request entry with nonce %lu!", nonce);
+      goto done;
     }
-  pmr = pool_elt_at_index(lcm->pending_map_requests_pool, pmr_index[0]);
+  pmr = pool_elt_at_index (lcm->pending_map_requests_pool, pmr_index[0]);
 
-  vlib_buffer_pull (b, sizeof(*mrep_hdr));
+  vlib_buffer_pull (b, sizeof (*mrep_hdr));
 
-  for (i = 0; i < MREP_REC_COUNT(mrep_hdr); i++)
+  for (i = 0; i < MREP_REC_COUNT (mrep_hdr); i++)
     {
-
       h = vlib_buffer_get_current (b);
-      ttl = clib_net_to_host_u32 (MAP_REC_TTL(h));
-      action = MAP_REC_ACTION(h);
-      authoritative = MAP_REC_AUTH(h);
+      ttl = clib_net_to_host_u32 (MAP_REC_TTL (h));
+      action = MAP_REC_ACTION (h);
+      authoritative = MAP_REC_AUTH (h);
 
       len = lisp_msg_parse_mapping_record (b, &deid, &locators, &probed);
       if (len == ~0)
-        {
-          clib_warning ("Failed to parse mapping record!");
-          vec_foreach (loc, locators)
-            {
-              locator_free (loc);
-            }
-          vec_free(locators);
-          return;
-        }
+       {
+         clib_warning ("Failed to parse mapping record!");
+         vec_foreach (loc, locators)
+         {
+           locator_free (loc);
+         }
+         vec_free (locators);
+         goto done;
+       }
 
       /* insert/update mappings cache */
-      vnet_lisp_add_del_mapping (&deid, locators, action, authoritative, ttl, 1,
-                                 &dst_map_index);
+      vnet_lisp_add_del_mapping (&deid, locators, action, authoritative, ttl,
+                                1, 0 /* is_static */ , &dst_map_index);
 
-      /* try to program forwarding only if mapping saved or updated*/
-      if ((u32) ~0 != dst_map_index)
-        lisp_add_del_adjacency (lcm, &pmr->src, &deid, 1);
+      /* try to program forwarding only if mapping saved or updated */
+      if ((u32) ~ 0 != dst_map_index)
+       lisp_add_del_adjacency (lcm, &pmr->src, &deid, 1);
 
-      vec_free(locators);
+      vec_free (locators);
     }
 
   /* remove pending map request entry */
-  hash_unset(lcm->pending_map_requests_by_nonce, nonce);
-  pool_put(lcm->pending_map_requests_pool, pmr);
+
+  /* *INDENT-OFF* */
+  clib_fifo_foreach (noncep, pmr->nonces, ({
+    hash_unset(lcm->pending_map_requests_by_nonce, noncep[0]);
+  }));
+  /* *INDENT-ON* */
+
+  clib_fifo_free (pmr->nonces);
+  pool_put (lcm->pending_map_requests_pool, pmr);
+
+done:
+  lisp_pending_map_request_unlock (lcm);
+  return 0;
 }
 
 void
-process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b)
+process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm,
+                    vlib_buffer_t * b)
 {
-  map_request_hdr_t * mreq_hdr;
+  map_request_hdr_t *mreq_hdr;
   gid_address_t src, dst;
 //  u64 nonce;
   u32 i, len = 0;
-  gid_address_t * itr_rlocs = 0, * rloc;
+  gid_address_t *itr_rlocs = 0, *rloc;
 
   mreq_hdr = vlib_buffer_get_current (b);
-  vlib_buffer_pull (b, sizeof(*mreq_hdr));
+  vlib_buffer_pull (b, sizeof (*mreq_hdr));
 
 //  nonce = MREQ_NONCE(mreq_hdr);
 
-  if (!MREQ_SMR(mreq_hdr)) {
-      clib_warning("Only SMR Map-Requests supported for now!");
+  if (!MREQ_SMR (mreq_hdr))
+    {
+      clib_warning ("Only SMR Map-Requests supported for now!");
       return;
-  }
+    }
 
   /* parse src eid */
   len = lisp_msg_parse_addr (b, &src);
@@ -2963,38 +3485,54 @@ process_map_request (vlib_main_t * vm, lisp_cp_main_t * lcm, vlib_buffer_t * b)
     return;
 
   /* for now we don't do anything with the itr's rlocs */
-  len = lisp_msg_parse_itr_rlocs (b, &itr_rlocs, MREQ_ITR_RLOC_COUNT(mreq_hdr) + 1);
+  len =
+    lisp_msg_parse_itr_rlocs (b, &itr_rlocs,
+                             MREQ_ITR_RLOC_COUNT (mreq_hdr) + 1);
   if (len == ~0)
     return;
 
   /* TODO: RLOCs are currently unused, so free them for now */
   vec_foreach (rloc, itr_rlocs)
-    {
-      gid_address_free (rloc);
-    }
+  {
+    gid_address_free (rloc);
+  }
 
   /* parse eid records and send SMR-invoked map-requests */
-  for (i = 0; i < MREQ_REC_COUNT(mreq_hdr); i++)
+  for (i = 0; i < MREQ_REC_COUNT (mreq_hdr); i++)
     {
-      memset(&dst, 0, sizeof(dst));
+      memset (&dst, 0, sizeof (dst));
       len = lisp_msg_parse_eid_rec (b, &dst);
       if (len == ~0)
-        {
-          clib_warning("Can't parse map-request EID-record");
-          return;
-        }
+       {
+         clib_warning ("Can't parse map-request EID-record");
+         return;
+       }
       /* send SMR-invoked map-requests */
-      send_encapsulated_map_request (vm, lcm, &dst, &src, /* invoked */ 1);
+      queue_map_request (&dst, &src, 1 /* invoked */ , 0 /* resend */ );
     }
 }
 
+static void
+queue_map_reply (vlib_buffer_t * b)
+{
+  vlib_buffer_t *a = clib_mem_alloc (sizeof (a[0]) + b->current_length);
+
+  clib_memcpy (a->data, b->data + b->current_data, b->current_length);
+  a->current_length = b->current_length;
+  a->current_data = 0;
+
+  vl_api_rpc_call_main_thread (process_map_reply, (u8 *) a, sizeof (a[0])
+                              + a->current_length);
+  clib_mem_free (a);
+}
+
 static uword
 lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
-               vlib_frame_t * from_frame)
+              vlib_frame_t * from_frame)
 {
-  u32 n_left_from, * from, * to_next_drop;
+  u32 n_left_from, *from, *to_next_drop;
   lisp_msg_type_e type;
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
 
   from = vlib_frame_vector_args (from_frame);
   n_left_from = from_frame->n_vectors;
@@ -3005,48 +3543,50 @@ lisp_cp_input (vlib_main_t * vm, vlib_node_runtime_t * node,
       u32 n_left_to_next_drop;
 
       vlib_get_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
-                           to_next_drop, n_left_to_next_drop);
+                          to_next_drop, n_left_to_next_drop);
       while (n_left_from > 0 && n_left_to_next_drop > 0)
-        {
-          u32 bi0;
-          vlib_buffer_t * b0;
-
-          bi0 = from[0];
-          from += 1;
-          n_left_from -= 1;
-          to_next_drop[0] = bi0;
-          to_next_drop += 1;
-          n_left_to_next_drop -= 1;
-
-          b0 = vlib_get_buffer (vm, bi0);
-
-          type = lisp_msg_type(vlib_buffer_get_current (b0));
-          switch (type)
-            {
-            case LISP_MAP_REPLY:
-              process_map_reply (lcm, b0);
-              break;
-            case LISP_MAP_REQUEST:
-              process_map_request(vm, lcm, b0);
-              break;
-            default:
-              clib_warning("Unsupported LISP message type %d", type);
-              break;
-            }
-
-          b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
-
-          if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
-            {
-
-            }
-        }
-
-      vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP, n_left_to_next_drop);
+       {
+         u32 bi0;
+         vlib_buffer_t *b0;
+
+         bi0 = from[0];
+         from += 1;
+         n_left_from -= 1;
+         to_next_drop[0] = bi0;
+         to_next_drop += 1;
+         n_left_to_next_drop -= 1;
+
+         b0 = vlib_get_buffer (vm, bi0);
+
+         type = lisp_msg_type (vlib_buffer_get_current (b0));
+         switch (type)
+           {
+           case LISP_MAP_REPLY:
+             queue_map_reply (b0);
+             break;
+           case LISP_MAP_REQUEST:
+             process_map_request (vm, lcm, b0);
+             break;
+           default:
+             clib_warning ("Unsupported LISP message type %d", type);
+             break;
+           }
+
+         b0->error = node->errors[LISP_CP_INPUT_ERROR_DROP];
+
+         if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+           {
+
+           }
+       }
+
+      vlib_put_next_frame (vm, node, LISP_CP_INPUT_NEXT_DROP,
+                          n_left_to_next_drop);
     }
   return from_frame->n_vectors;
 }
 
+/* *INDENT-OFF* */
 VLIB_REGISTER_NODE (lisp_cp_input_node) = {
   .function = lisp_cp_input,
   .name = "lisp-cp-input",
@@ -3063,12 +3603,13 @@ VLIB_REGISTER_NODE (lisp_cp_input_node) = {
       [LISP_CP_INPUT_NEXT_DROP] = "error-drop",
   },
 };
+/* *INDENT-ON* */
 
 clib_error_t *
-lisp_cp_init (vlib_main_t *vm)
+lisp_cp_init (vlib_main_t * vm)
 {
-  lisp_cp_main_t * lcm = vnet_lisp_cp_get_main();
-  clib_error_t * error = 0;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  clib_error_t *error = 0;
 
   if ((error = vlib_call_init_function (vm, lisp_gpe_init)))
     return error;
@@ -3076,22 +3617,200 @@ lisp_cp_init (vlib_main_t *vm)
   lcm->im4 = &ip4_main;
   lcm->im6 = &ip6_main;
   lcm->vlib_main = vm;
-  lcm->vnet_main = vnet_get_main();
+  lcm->vnet_main = vnet_get_main ();
   lcm->mreq_itr_rlocs = ~0;
   lcm->lisp_pitr = 0;
+  memset (&lcm->active_map_resolver, 0, sizeof (lcm->active_map_resolver));
 
+  lcm->pending_map_request_lock =
+    clib_mem_alloc_aligned (CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES);
+
+  lcm->pending_map_request_lock[0] = 0;
   gid_dictionary_init (&lcm->mapping_index_by_gid);
+  lcm->do_map_resolver_election = 1;
+  lcm->map_request_mode = MR_MODE_DST_ONLY;
 
   /* default vrf mapped to vni 0 */
-  hash_set(lcm->table_id_by_vni, 0, 0);
-  hash_set(lcm->vni_by_table_id, 0, 0);
+  hash_set (lcm->table_id_by_vni, 0, 0);
+  hash_set (lcm->vni_by_table_id, 0, 0);
 
   udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp,
-                         lisp_cp_input_node.index, 1 /* is_ip4 */);
+                        lisp_cp_input_node.index, 1 /* is_ip4 */ );
   udp_register_dst_port (vm, UDP_DST_PORT_lisp_cp6,
-                         lisp_cp_input_node.index, 0 /* is_ip4 */);
+                        lisp_cp_input_node.index, 0 /* is_ip4 */ );
 
   return 0;
 }
 
-VLIB_INIT_FUNCTION(lisp_cp_init);
+static void *
+send_map_request_thread_fn (void *arg)
+{
+  map_request_args_t *a = arg;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+  if (a->is_resend)
+    /* if resending, we already have the lock */
+    resend_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
+  else
+    {
+      /* get lock before sending map-request */
+      lisp_pending_map_request_lock (lcm);
+      send_encapsulated_map_request (lcm, &a->seid, &a->deid, a->smr_invoked);
+      lisp_pending_map_request_unlock (lcm);
+    }
+
+
+  return 0;
+}
+
+static int
+queue_map_request (gid_address_t * seid, gid_address_t * deid,
+                  u8 smr_invoked, u8 is_resend)
+{
+  map_request_args_t a;
+
+  a.is_resend = is_resend;
+  gid_address_copy (&a.seid, seid);
+  gid_address_copy (&a.deid, deid);
+  a.smr_invoked = smr_invoked;
+
+  vl_api_rpc_call_main_thread (send_map_request_thread_fn,
+                              (u8 *) & a, sizeof (a));
+  return 0;
+}
+
+/**
+ * Take an action with a pending map request depending on expiration time
+ * and re-try counters.
+ */
+static void
+update_pending_request (pending_map_request_t * r, f64 dt)
+{
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+  map_resolver_t *mr;
+
+  if (r->time_to_expire - dt < 0)
+    /* it's time to decide what to do with this pending request */
+    {
+      if (r->retries_num >= NUMBER_OF_RETRIES)
+       /* too many retries -> assume current map resolver is not available */
+       {
+         mr = get_map_resolver (&lcm->active_map_resolver);
+         if (!mr)
+           {
+             clib_warning ("Map resolver %U not found - probably deleted "
+                           "by the user recently.", format_ip_address,
+                           &lcm->active_map_resolver);
+           }
+         else
+           {
+             clib_warning ("map resolver %U is unreachable, ignoring",
+                           format_ip_address, &lcm->active_map_resolver);
+
+             /* mark current map resolver unavailable so it won't be
+              * selected next time */
+             mr->is_down = 1;
+             mr->last_update = vlib_time_now (lcm->vlib_main);
+           }
+
+         reset_pending_mr_counters (r);
+         elect_map_resolver (lcm);
+
+         /* try to find a next eligible map resolver and re-send */
+         queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
+                            1 /* resend */ );
+       }
+      else
+       {
+         /* try again */
+         queue_map_request (&r->src, &r->dst, r->is_smr_invoked,
+                            1 /* resend */ );
+         r->retries_num++;
+         r->time_to_expire = PENDING_MREQ_EXPIRATION_TIME;
+       }
+    }
+  else
+    r->time_to_expire -= dt;
+}
+
+static void
+remove_dead_pending_map_requests (lisp_cp_main_t * lcm)
+{
+  u64 *nonce;
+  pending_map_request_t *pmr;
+  u32 *to_be_removed = 0, *pmr_index;
+
+  ASSERT (*lcm->pending_map_request_lock);
+
+  /* *INDENT-OFF* */
+  pool_foreach (pmr, lcm->pending_map_requests_pool,
+  ({
+    if (pmr->to_be_removed)
+      {
+        clib_fifo_foreach (nonce, pmr->nonces, ({
+          hash_unset (lcm->pending_map_requests_by_nonce, nonce[0]);
+        }));
+
+        vec_add1 (to_be_removed, pmr - lcm->pending_map_requests_pool);
+      }
+  }));
+  /* *INDENT-ON* */
+
+  vec_foreach (pmr_index, to_be_removed)
+    pool_put_index (lcm->pending_map_requests_by_nonce, pmr_index[0]);
+
+  vec_free (to_be_removed);
+}
+
+static uword
+send_map_resolver_service (vlib_main_t * vm,
+                          vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+  f64 period = 2.0;
+  pending_map_request_t *pmr;
+  lisp_cp_main_t *lcm = vnet_lisp_cp_get_main ();
+
+  while (1)
+    {
+      vlib_process_wait_for_event_or_clock (vm, period);
+
+      /* currently no signals are expected - just wait for clock */
+      (void) vlib_process_get_events (vm, 0);
+
+      lisp_pending_map_request_lock (lcm);
+
+      /* *INDENT-OFF* */
+      pool_foreach (pmr, lcm->pending_map_requests_pool,
+      ({
+        if (!pmr->to_be_removed)
+          update_pending_request (pmr, period);
+      }));
+      /* *INDENT-ON* */
+
+      remove_dead_pending_map_requests (lcm);
+
+      lisp_pending_map_request_unlock (lcm);
+    }
+
+  /* unreachable */
+  return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (lisp_retry_service_node,static) = {
+    .function = send_map_resolver_service,
+    .type = VLIB_NODE_TYPE_PROCESS,
+    .name = "lisp-retry-service",
+    .process_log2_n_stack_bytes = 16,
+};
+/* *INDENT-ON* */
+
+VLIB_INIT_FUNCTION (lisp_cp_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */