Add support for MAP-T CE (VPP-1058)

Change-Id: Ib99058323c50f20fcdb44185aee027c5c6ef8c91
Signed-off-by: Juraj Sloboda <jsloboda@cisco.com>

1 files changed, 241 insertions, 106 deletions

diff --git a/src/vnet/map/ip6_map_t.c b/src/vnet/map/ip6_map_t.c
index a6314c66ee6..05bac1d429d 100644
--- a/src/vnet/map/ip6_map_t.c
+++ b/src/vnet/map/ip6_map_t.c
@@ -101,27 +101,49 @@ ip6_map_fragment_get (ip6_header_t * ip6, ip6_frag_hdr_t * frag,
 typedef struct
 {
   map_domain_t *d;
-  u16 sender_port;
+  u16 id;
 } icmp6_to_icmp_ctx_t;
 
 static int
 ip6_to_ip4_set_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4, void *arg)
 {
   icmp6_to_icmp_ctx_t *ctx = arg;
-  u32 ip4_sadr;
+  map_main_t *mm = &map_main;
 
-  //Security check
-  //Note that this prevents an intermediate IPv6 router from answering the request
-  ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags);
-  if (ip6->src_address.as_u64[0] !=
-      map_get_pfx_net (ctx->d, ip4_sadr, ctx->sender_port)
-      || ip6->src_address.as_u64[1] != map_get_sfx_net (ctx->d, ip4_sadr,
-							ctx->sender_port))
-    return -1;
-
-  ip4->dst_address.as_u32 =
-    ip6_map_t_embedded_address (ctx->d, &ip6->dst_address);
-  ip4->src_address.as_u32 = ip4_sadr;
+  if (mm->is_ce)
+    {
+      u32 ip4_dadr;
+
+      //Security check
+      //Note that this prevents an intermediate IPv6 router from answering the request
+      ip4_dadr = map_get_ip4 (&ip6->dst_address, ctx->d->flags);
+      if (ip6->dst_address.as_u64[0] !=
+	  map_get_pfx_net (ctx->d, ip4_dadr, ctx->id)
+	  || ip6->dst_address.as_u64[1] != map_get_sfx_net (ctx->d, ip4_dadr,
+							    ctx->id))
+	return -1;
+
+      ip4->src_address.as_u32 =
+	ip6_map_t_embedded_address (ctx->d, &ip6->src_address);
+      ip4->dst_address.as_u32 = ip4_dadr;
+    }
+  else
+    {
+      u32 ip4_sadr;
+
+      //Security check
+      //Note that this prevents an intermediate IPv6 router from answering the request
+      ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags);
+      if (ip6->src_address.as_u64[0] !=
+	  map_get_pfx_net (ctx->d, ip4_sadr, ctx->id)
+	  || ip6->src_address.as_u64[1] != map_get_sfx_net (ctx->d, ip4_sadr,
+							    ctx->id))
+	return -1;
+
+      ip4->dst_address.as_u32 =
+	ip6_map_t_embedded_address (ctx->d, &ip6->dst_address);
+      ip4->src_address.as_u32 = ip4_sadr;
+    }
 
   return 0;
 }
@@ -131,20 +153,42 @@ ip6_to_ip4_set_inner_icmp_cb (ip6_header_t * ip6, ip4_header_t * ip4,
 			      void *arg)
 {
   icmp6_to_icmp_ctx_t *ctx = arg;
-  u32 inner_ip4_dadr;
+  map_main_t *mm = &map_main;
 
-  //Security check of inner packet
-  inner_ip4_dadr = map_get_ip4 (&ip6->dst_address, ctx->d->flags);
-  if (ip6->dst_address.as_u64[0] !=
-      map_get_pfx_net (ctx->d, inner_ip4_dadr, ctx->sender_port)
-      || ip6->dst_address.as_u64[1] != map_get_sfx_net (ctx->d,
-							inner_ip4_dadr,
-							ctx->sender_port))
-    return -1;
-
-  ip4->dst_address.as_u32 = inner_ip4_dadr;
-  ip4->src_address.as_u32 =
-    ip6_map_t_embedded_address (ctx->d, &ip6->src_address);
+  if (mm->is_ce)
+    {
+      u32 inner_ip4_sadr;
+
+      //Security check of inner packet
+      inner_ip4_sadr = map_get_ip4 (&ip6->src_address, ctx->d->flags);
+      if (ip6->src_address.as_u64[0] !=
+	  map_get_pfx_net (ctx->d, inner_ip4_sadr, ctx->id)
+	  || ip6->src_address.as_u64[1] != map_get_sfx_net (ctx->d,
+							    inner_ip4_sadr,
+							    ctx->id))
+	return -1;
+
+      ip4->src_address.as_u32 = inner_ip4_sadr;
+      ip4->dst_address.as_u32 =
+	ip6_map_t_embedded_address (ctx->d, &ip6->dst_address);
+    }
+  else
+    {
+      u32 inner_ip4_dadr;
+
+      //Security check of inner packet
+      inner_ip4_dadr = map_get_ip4 (&ip6->dst_address, ctx->d->flags);
+      if (ip6->dst_address.as_u64[0] !=
+	  map_get_pfx_net (ctx->d, inner_ip4_dadr, ctx->id)
+	  || ip6->dst_address.as_u64[1] != map_get_sfx_net (ctx->d,
+							    inner_ip4_dadr,
+							    ctx->id))
+	return -1;
+
+      ip4->dst_address.as_u32 = inner_ip4_dadr;
+      ip4->src_address.as_u32 =
+	ip6_map_t_embedded_address (ctx->d, &ip6->src_address);
+    }
 
   return 0;
 }
@@ -176,6 +220,7 @@ ip6_map_t_icmp (vlib_main_t * vm,
 	  u16 len0;
 	  icmp6_to_icmp_ctx_t ctx0;
 	  ip6_header_t *ip60;
+	  icmp46_header_t *icmp0;
 
 	  pi0 = to_next[0] = from[0];
 	  from += 1;
@@ -188,12 +233,16 @@ ip6_map_t_icmp (vlib_main_t * vm,
 	  p0 = vlib_get_buffer (vm, pi0);
 	  ip60 = vlib_buffer_get_current (p0);
 	  len0 = clib_net_to_host_u16 (ip60->payload_length);
+	  icmp0 = (icmp46_header_t *) (ip60 + 1);
 	  d0 =
 	    pool_elt_at_index (map_main.domains,
 			       vnet_buffer (p0)->map_t.map_domain_index);
-	  ctx0.sender_port = ip6_get_port (ip60, 0, p0->current_length);
+
+	  ctx0.id =
+	    ip6_get_port (ip60, icmp0->type == ICMP6_echo_request,
+			  p0->current_length);
 	  ctx0.d = d0;
-	  if (ctx0.sender_port == 0)
+	  if (ctx0.id == 0)
 	    {
 	      // In case of 1:1 mapping, we don't care about the port
 	      if (!(d0->ea_bits_len == 0 && d0->rules))
@@ -492,22 +541,30 @@ ip6_map_t_tcp_udp (vlib_main_t * vm,
 
 static_always_inline void
 ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60,
-		    map_domain_t * d0, i32 * src_port0,
+		    map_domain_t * d0, i32 * map_port0,
 		    u8 * error0, ip6_mapt_next_t * next0,
 		    u32 l4_len0, ip6_frag_hdr_t * frag0)
 {
+  map_main_t *mm = &map_main;
+  u32 port_offset;
+
+  if (mm->is_ce)
+    port_offset = 2;
+  else
+    port_offset = 0;
+
   if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
 		     ip6_frag_hdr_offset (frag0)))
     {
       *next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
       if (d0->ea_bits_len == 0 && d0->rules)
 	{
-	  *src_port0 = 0;
+	  *map_port0 = 0;
 	}
       else
 	{
-	  *src_port0 = ip6_map_fragment_get (ip60, frag0, d0);
-	  *error0 = (*src_port0 != -1) ? *error0 : MAP_ERROR_FRAGMENT_DROPPED;
+	  *map_port0 = ip6_map_fragment_get (ip60, frag0, d0);
+	  *error0 = (*map_port0 != -1) ? *error0 : MAP_ERROR_FRAGMENT_DROPPED;
 	}
     }
   else
@@ -519,9 +576,11 @@ ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60,
       vnet_buffer (p0)->map_t.checksum_offset =
 	vnet_buffer (p0)->map_t.v6.l4_offset + 16;
       *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
-      *src_port0 =
+      *map_port0 =
 	(i32) *
-	((u16 *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+	((u16 *)
+	 u8_ptr_add (ip60,
+		     vnet_buffer (p0)->map_t.v6.l4_offset + port_offset));
     }
   else
     if (PREDICT_TRUE
@@ -532,9 +591,11 @@ ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60,
       vnet_buffer (p0)->map_t.checksum_offset =
 	vnet_buffer (p0)->map_t.v6.l4_offset + 6;
       *next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
-      *src_port0 =
+      *map_port0 =
 	(i32) *
-	((u16 *) u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+	((u16 *)
+	 u8_ptr_add (ip60,
+		     vnet_buffer (p0)->map_t.v6.l4_offset + port_offset));
     }
   else if (vnet_buffer (p0)->map_t.v6.l4_protocol == IP_PROTOCOL_ICMP6)
     {
@@ -543,7 +604,7 @@ ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60,
       *next0 = IP6_MAPT_NEXT_MAPT_ICMP;
       if (d0->ea_bits_len == 0 && d0->rules)
 	{
-	  *src_port0 = 0;
+	  *map_port0 = 0;
 	}
       else
 	if (((icmp46_header_t *)
@@ -555,7 +616,7 @@ ip6_map_t_classify (vlib_buffer_t * p0, ip6_header_t * ip60,
 			    vnet_buffer (p0)->map_t.v6.l4_offset))->code ==
 	    ICMP6_echo_request)
 	{
-	  *src_port0 =
+	  *map_port0 =
 	    (i32) *
 	    ((u16 *)
 	     u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset + 6));
@@ -574,6 +635,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
   u32 n_left_from, *from, next_index, *to_next, n_left_to_next;
   vlib_node_runtime_t *error_node =
     vlib_node_get_runtime (vm, ip6_map_t_node.index);
+  map_main_t *mm = &map_main;
   vlib_combined_counter_main_t *cm = map_main.domain_counters;
   u32 thread_index = vlib_get_thread_index ();
 
@@ -593,10 +655,9 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	  u8 error0, error1;
 	  ip6_mapt_next_t next0, next1;
 	  u32 l4_len0, l4_len1;
-	  i32 src_port0, src_port1;
+	  i32 map_port0, map_port1;
 	  map_domain_t *d0, *d1;
 	  ip6_frag_hdr_t *frag0, *frag1;
-	  u32 saddr0, saddr1;
 	  next0 = next1 = 0;	//Because compiler whines
 
 	  pi0 = to_next[0] = from[0];
@@ -614,29 +675,67 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	  ip60 = vlib_buffer_get_current (p0);
 	  ip61 = vlib_buffer_get_current (p1);
 
-	  saddr0 = 0;		/* TODO */
-	  saddr1 = 0;		/* TODO */
-	  /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
-
-	  d0 = ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
-				   (ip4_address_t *) & saddr0,
-				   &vnet_buffer (p0)->map_t.map_domain_index,
-				   &error0);
-	  d1 =
-	    ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX],
-				(ip4_address_t *) & saddr1,
-				&vnet_buffer (p1)->map_t.map_domain_index,
-				&error1);
-
-	  saddr0 = map_get_ip4 (&ip60->src_address, d0->flags);
-	  saddr1 = map_get_ip4 (&ip61->src_address, d1->flags);
-
-	  vnet_buffer (p0)->map_t.v6.saddr = saddr0;
-	  vnet_buffer (p1)->map_t.v6.saddr = saddr1;
-	  vnet_buffer (p0)->map_t.v6.daddr =
-	    ip6_map_t_embedded_address (d0, &ip60->dst_address);
-	  vnet_buffer (p1)->map_t.v6.daddr =
-	    ip6_map_t_embedded_address (d1, &ip61->dst_address);
+	  if (mm->is_ce)
+	    {
+	      u32 daddr0, daddr1;
+	      daddr0 = 0;	/* TODO */
+	      daddr1 = 0;	/* TODO */
+	      /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
+
+	      daddr0 = map_get_ip4 (&ip60->dst_address, 0 /*TODO*/);
+	      daddr1 = map_get_ip4 (&ip61->dst_address, 0 /*TODO*/);
+	      d0 =
+		ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+				    (ip4_address_t *) & daddr0,
+				    &vnet_buffer (p0)->map_t.map_domain_index,
+				    &error0);
+	      d1 =
+		ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX],
+				    (ip4_address_t *) & daddr1,
+				    &vnet_buffer (p1)->map_t.map_domain_index,
+				    &error1);
+
+	      daddr0 = map_get_ip4 (&ip60->dst_address, d0->flags);
+	      daddr1 = map_get_ip4 (&ip61->dst_address, d1->flags);
+
+	      vnet_buffer (p0)->map_t.v6.daddr = daddr0;
+	      vnet_buffer (p1)->map_t.v6.daddr = daddr1;
+	      vnet_buffer (p0)->map_t.v6.saddr =
+		ip6_map_t_embedded_address (d0, &ip60->src_address);
+	      vnet_buffer (p1)->map_t.v6.saddr =
+		ip6_map_t_embedded_address (d1, &ip61->src_address);
+	    }
+	  else
+	    {
+	      u32 saddr0, saddr1;
+	      saddr0 = 0;	/* TODO */
+	      saddr1 = 0;	/* TODO */
+	      /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
+
+	      saddr0 = map_get_ip4 (&ip60->src_address, 0 /*TODO*/);
+	      saddr1 = map_get_ip4 (&ip61->src_address, 0 /*TODO*/);
+	      d0 =
+		ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+				    (ip4_address_t *) & saddr0,
+				    &vnet_buffer (p0)->map_t.map_domain_index,
+				    &error0);
+	      d1 =
+		ip6_map_get_domain (vnet_buffer (p1)->ip.adj_index[VLIB_TX],
+				    (ip4_address_t *) & saddr1,
+				    &vnet_buffer (p1)->map_t.map_domain_index,
+				    &error1);
+
+	      saddr0 = map_get_ip4 (&ip60->src_address, d0->flags);
+	      saddr1 = map_get_ip4 (&ip61->src_address, d1->flags);
+
+	      vnet_buffer (p0)->map_t.v6.saddr = saddr0;
+	      vnet_buffer (p1)->map_t.v6.saddr = saddr1;
+	      vnet_buffer (p0)->map_t.v6.daddr =
+		ip6_map_t_embedded_address (d0, &ip60->dst_address);
+	      vnet_buffer (p1)->map_t.v6.daddr =
+		ip6_map_t_embedded_address (d1, &ip61->dst_address);
+	    }
+
 	  vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
 	  vnet_buffer (p1)->map_t.mtu = d1->mtu ? d1->mtu : ~0;
 
@@ -664,7 +763,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	      next1 = IP6_MAPT_NEXT_DROP;
 	    }
 
-	  src_port0 = src_port1 = -1;
+	  map_port0 = map_port1 = -1;
 	  l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) +
 	    sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset;
 	  l4_len1 = (u32) clib_net_to_host_u16 (ip61->payload_length) +
@@ -678,33 +777,33 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 					   vnet_buffer (p1)->map_t.
 					   v6.frag_offset);
 
-	  ip6_map_t_classify (p0, ip60, d0, &src_port0, &error0, &next0,
+	  ip6_map_t_classify (p0, ip60, d0, &map_port0, &error0, &next0,
 			      l4_len0, frag0);
-	  ip6_map_t_classify (p1, ip61, d1, &src_port1, &error1, &next1,
+	  ip6_map_t_classify (p1, ip61, d1, &map_port1, &error1, &next1,
 			      l4_len1, frag1);
 
 	  if (PREDICT_FALSE
-	      ((src_port0 != -1)
+	      ((map_port0 != -1)
 	       && (ip60->src_address.as_u64[0] !=
 		   map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr,
-				    src_port0)
+				    map_port0)
 		   || ip60->src_address.as_u64[1] != map_get_sfx_net (d0,
 								      vnet_buffer
 								      (p0)->map_t.v6.saddr,
-								      src_port0))))
+								      map_port0))))
 	    {
 	      error0 = MAP_ERROR_SEC_CHECK;
 	    }
 
 	  if (PREDICT_FALSE
-	      ((src_port1 != -1)
+	      ((map_port1 != -1)
 	       && (ip61->src_address.as_u64[0] !=
 		   map_get_pfx_net (d1, vnet_buffer (p1)->map_t.v6.saddr,
-				    src_port1)
+				    map_port1)
 		   || ip61->src_address.as_u64[1] != map_get_sfx_net (d1,
 								      vnet_buffer
 								      (p1)->map_t.v6.saddr,
-								      src_port1))))
+								      map_port1))))
 	    {
 	      error1 = MAP_ERROR_SEC_CHECK;
 	    }
@@ -715,7 +814,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 							       vnet_buffer
 							       (p0)->map_t.
 							       v6.frag_offset)))
-	      && (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
+	      && (map_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
 	      && (error0 == MAP_ERROR_NONE))
 	    {
 	      ip6_map_fragment_cache (ip60,
@@ -723,7 +822,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 								     vnet_buffer
 								     (p0)->map_t.
 								     v6.frag_offset),
-				      d0, src_port0);
+				      d0, map_port0);
 	    }
 
 	  if (PREDICT_FALSE (vnet_buffer (p1)->map_t.v6.frag_offset &&
@@ -732,7 +831,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 							       vnet_buffer
 							       (p1)->map_t.
 							       v6.frag_offset)))
-	      && (src_port1 != -1) && (d1->ea_bits_len != 0 || !d1->rules)
+	      && (map_port1 != -1) && (d1->ea_bits_len != 0 || !d1->rules)
 	      && (error1 == MAP_ERROR_NONE))
 	    {
 	      ip6_map_fragment_cache (ip61,
@@ -740,7 +839,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 								     vnet_buffer
 								     (p1)->map_t.
 								     v6.frag_offset),
-				      d1, src_port1);
+				      d1, map_port1);
 	    }
 
 	  if (PREDICT_TRUE
@@ -782,11 +881,11 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	  ip6_header_t *ip60;
 	  u8 error0;
 	  u32 l4_len0;
-	  i32 src_port0;
+	  i32 map_port0;
 	  map_domain_t *d0;
 	  ip6_frag_hdr_t *frag0;
+	  u32 port_offset;
 	  ip6_mapt_next_t next0 = 0;
-	  u32 saddr;
 
 	  pi0 = to_next[0] = from[0];
 	  from += 1;
@@ -798,21 +897,53 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	  p0 = vlib_get_buffer (vm, pi0);
 	  ip60 = vlib_buffer_get_current (p0);
 
-	  //Save saddr in a different variable to not overwrite ip.adj_index
-	  saddr = 0;		/* TODO */
-	  /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
-
-	  d0 = ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
-				   (ip4_address_t *) & saddr,
-				   &vnet_buffer (p0)->map_t.map_domain_index,
-				   &error0);
-
-	  saddr = map_get_ip4 (&ip60->src_address, d0->flags);
+	  if (mm->is_ce)
+	    {
+	      u32 daddr;
+	      //Save daddr in a different variable to not overwrite ip.adj_index
+	      daddr = 0;	/* TODO */
+	      /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
+
+	      daddr = map_get_ip4 (&ip60->dst_address, 0 /*TODO*/);
+	      d0 =
+		ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+				    (ip4_address_t *) & daddr,
+				    &vnet_buffer (p0)->map_t.map_domain_index,
+				    &error0);
+
+	      daddr = map_get_ip4 (&ip60->dst_address, d0->flags);
+
+	      //FIXME: What if d0 is null
+	      vnet_buffer (p0)->map_t.v6.daddr = daddr;
+	      vnet_buffer (p0)->map_t.v6.saddr =
+		ip6_map_t_embedded_address (d0, &ip60->src_address);
+
+	      port_offset = 2;
+	    }
+	  else
+	    {
+	      u32 saddr;
+	      //Save saddr in a different variable to not overwrite ip.adj_index
+	      saddr = 0;	/* TODO */
+	      /* NOTE: ip6_map_get_domain currently doesn't utilize second argument */
+
+	      saddr = map_get_ip4 (&ip60->src_address, 0 /*TODO*/);
+	      d0 =
+		ip6_map_get_domain (vnet_buffer (p0)->ip.adj_index[VLIB_TX],
+				    (ip4_address_t *) & saddr,
+				    &vnet_buffer (p0)->map_t.map_domain_index,
+				    &error0);
+
+	      saddr = map_get_ip4 (&ip60->src_address, d0->flags);
+
+	      //FIXME: What if d0 is null
+	      vnet_buffer (p0)->map_t.v6.saddr = saddr;
+	      vnet_buffer (p0)->map_t.v6.daddr =
+		ip6_map_t_embedded_address (d0, &ip60->dst_address);
+
+	      port_offset = 0;
+	    }
 
-	  //FIXME: What if d0 is null
-	  vnet_buffer (p0)->map_t.v6.saddr = saddr;
-	  vnet_buffer (p0)->map_t.v6.daddr =
-	    ip6_map_t_embedded_address (d0, &ip60->dst_address);
 	  vnet_buffer (p0)->map_t.mtu = d0->mtu ? d0->mtu : ~0;
 
 	  if (PREDICT_FALSE (ip6_parse (ip60, p0->current_length,
@@ -827,7 +958,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	      next0 = IP6_MAPT_NEXT_DROP;
 	    }
 
-	  src_port0 = -1;
+	  map_port0 = -1;
 	  l4_len0 = (u32) clib_net_to_host_u16 (ip60->payload_length) +
 	    sizeof (*ip60) - vnet_buffer (p0)->map_t.v6.l4_offset;
 	  frag0 =
@@ -839,8 +970,8 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	  if (PREDICT_FALSE (vnet_buffer (p0)->map_t.v6.frag_offset &&
 			     ip6_frag_hdr_offset (frag0)))
 	    {
-	      src_port0 = ip6_map_fragment_get (ip60, frag0, d0);
-	      error0 = (src_port0 != -1) ? error0 : MAP_ERROR_FRAGMENT_MEMORY;
+	      map_port0 = ip6_map_fragment_get (ip60, frag0, d0);
+	      error0 = (map_port0 != -1) ? error0 : MAP_ERROR_FRAGMENT_MEMORY;
 	      next0 = IP6_MAPT_NEXT_MAPT_FRAGMENTED;
 	    }
 	  else
@@ -853,10 +984,12 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	      vnet_buffer (p0)->map_t.checksum_offset =
 		vnet_buffer (p0)->map_t.v6.l4_offset + 16;
 	      next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
-	      src_port0 =
+	      map_port0 =
 		(i32) *
 		((u16 *)
-		 u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+		 u8_ptr_add (ip60,
+			     vnet_buffer (p0)->map_t.v6.l4_offset +
+			     port_offset));
 	    }
 	  else
 	    if (PREDICT_TRUE
@@ -868,10 +1001,12 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 	      vnet_buffer (p0)->map_t.checksum_offset =
 		vnet_buffer (p0)->map_t.v6.l4_offset + 6;
 	      next0 = IP6_MAPT_NEXT_MAPT_TCP_UDP;
-	      src_port0 =
+	      map_port0 =
 		(i32) *
 		((u16 *)
-		 u8_ptr_add (ip60, vnet_buffer (p0)->map_t.v6.l4_offset));
+		 u8_ptr_add (ip60,
+			     vnet_buffer (p0)->map_t.v6.l4_offset +
+			     port_offset));
 	    }
 	  else if (vnet_buffer (p0)->map_t.v6.l4_protocol ==
 		   IP_PROTOCOL_ICMP6)
@@ -888,7 +1023,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 		      u8_ptr_add (ip60,
 				  vnet_buffer (p0)->map_t.v6.
 				  l4_offset))->code == ICMP6_echo_request)
-		src_port0 =
+		map_port0 =
 		  (i32) *
 		  ((u16 *)
 		   u8_ptr_add (ip60,
@@ -902,14 +1037,14 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 
 	  //Security check
 	  if (PREDICT_FALSE
-	      ((src_port0 != -1)
+	      ((!mm->is_ce) && (map_port0 != -1)
 	       && (ip60->src_address.as_u64[0] !=
 		   map_get_pfx_net (d0, vnet_buffer (p0)->map_t.v6.saddr,
-				    src_port0)
+				    map_port0)
 		   || ip60->src_address.as_u64[1] != map_get_sfx_net (d0,
 								      vnet_buffer
 								      (p0)->map_t.v6.saddr,
-								      src_port0))))
+								      map_port0))))
 	    {
 	      //Security check when src_port0 is not zero (non-first fragment, UDP or TCP)
 	      error0 = MAP_ERROR_SEC_CHECK;
@@ -922,7 +1057,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 							       vnet_buffer
 							       (p0)->map_t.
 							       v6.frag_offset)))
-	      && (src_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
+	      && (map_port0 != -1) && (d0->ea_bits_len != 0 || !d0->rules)
 	      && (error0 == MAP_ERROR_NONE))
 	    {
 	      ip6_map_fragment_cache (ip60,
@@ -930,7 +1065,7 @@ ip6_map_t (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * frame)
 								     vnet_buffer
 								     (p0)->map_t.
 								     v6.frag_offset),
-				      d0, src_port0);
+				      d0, map_port0);
 	    }
 
 	  if (PREDICT_TRUE