First commit SR MPLS

Change-Id: I961685a2a0e4c314049444c64eb6ccf877c278dd
Signed-off-by: Pablo Camarillo <pcamaril@cisco.com>

1 files changed, 0 insertions, 1492 deletions

diff --git a/src/vnet/sr/sr_localsid.c b/src/vnet/sr/sr_localsid.c
deleted file mode 100755
index 32fc5f823ef..00000000000
--- a/src/vnet/sr/sr_localsid.c
+++ /dev/null
@@ -1,1492 +0,0 @@
-/*
- * sr_localsid.c: ipv6 segment routing Endpoint behaviors
- *
- * Copyright (c) 2016 Cisco and/or its affiliates.
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at:
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-/**
- * @file
- * @brief Processing of packets with a SRH
- *
- * CLI to define new Segment Routing End processing functions.
- * Graph node to support such functions.
- *
- * Each function associates an SRv6 segment (IPv6 address) with an specific
- * Segment Routing function.
- *
- */
-
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vnet/sr/sr.h>
-#include <vnet/ip/ip.h>
-#include <vnet/sr/sr_packet.h>
-#include <vnet/ip/ip6_packet.h>
-#include <vnet/fib/ip6_fib.h>
-#include <vnet/dpo/dpo.h>
-#include <vnet/adj/adj.h>
-
-#include <vppinfra/error.h>
-#include <vppinfra/elog.h>
-
-/**
- * @brief Dynamically added SR localsid DPO type
- */
-static dpo_type_t sr_localsid_dpo_type;
-static dpo_type_t sr_localsid_d_dpo_type;
-
-/**
- * @brief SR localsid add/del
- *
- * Function to add or delete SR LocalSIDs.
- *
- * @param is_del Boolean of whether its a delete instruction
- * @param localsid_addr IPv6 address of the localsid
- * @param is_decap Boolean of whether decapsulation is allowed in this function
- * @param behavior Type of behavior (function) for this localsid
- * @param sw_if_index Only for L2/L3 xconnect. OIF. In VRF variant the fib_table.
- * @param vlan_index Only for L2 xconnect. Outgoing VLAN tag.
- * @param fib_table  FIB table in which we should install the localsid entry
- * @param nh_addr Next Hop IPv4/IPv6 address. Only for L2/L3 xconnect.
- *
- * @return 0 on success, error otherwise.
- */
-int
-sr_cli_localsid (char is_del, ip6_address_t * localsid_addr,
-		 char end_psp, u8 behavior, u32 sw_if_index, u32 vlan_index,
-		 u32 fib_table, ip46_address_t * nh_addr, void *ls_plugin_mem)
-{
-  ip6_sr_main_t *sm = &sr_main;
-  uword *p;
-  int rv;
-
-  ip6_sr_localsid_t *ls = 0;
-
-  dpo_id_t dpo = DPO_INVALID;
-
-  /* Search for the item */
-  p = mhash_get (&sm->sr_localsids_index_hash, localsid_addr);
-
-  if (p)
-    {
-      if (is_del)
-	{
-	  /* Retrieve localsid */
-	  ls = pool_elt_at_index (sm->localsids, p[0]);
-	  /* Delete FIB entry */
-	  fib_prefix_t pfx = {
-	    .fp_proto = FIB_PROTOCOL_IP6,
-	    .fp_len = 128,
-	    .fp_addr = {
-			.ip6 = *localsid_addr,
-			}
-	  };
-
-	  fib_table_entry_delete (fib_table_find (FIB_PROTOCOL_IP6,
-						  fib_table),
-				  &pfx, FIB_SOURCE_SR);
-
-	  /* In case it is a Xconnect iface remove the (OIF, NHOP) adj */
-	  if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX6
-	      || ls->behavior == SR_BEHAVIOR_DX4)
-	    adj_unlock (ls->nh_adj);
-
-	  if (ls->behavior >= SR_BEHAVIOR_LAST)
-	    {
-	      sr_localsid_fn_registration_t *plugin = 0;
-	      plugin = pool_elt_at_index (sm->plugin_functions,
-					  ls->behavior - SR_BEHAVIOR_LAST);
-
-	      /* Callback plugin removal function */
-	      rv = plugin->removal (ls);
-	    }
-
-	  /* Delete localsid registry */
-	  pool_put (sm->localsids, ls);
-	  mhash_unset (&sm->sr_localsids_index_hash, localsid_addr, NULL);
-	  return 1;
-	}
-      else			/* create with function already existing; complain */
-	return -1;
-    }
-  else
-    /* delete; localsid does not exist; complain */
-  if (is_del)
-    return -2;
-
-  /* Check whether there exists a FIB entry with such address */
-  fib_prefix_t pfx = {
-    .fp_proto = FIB_PROTOCOL_IP6,
-    .fp_len = 128,
-  };
-
-  pfx.fp_addr.as_u64[0] = localsid_addr->as_u64[0];
-  pfx.fp_addr.as_u64[1] = localsid_addr->as_u64[1];
-
-  /* Lookup the FIB index associated to the table id provided */
-  u32 fib_index = fib_table_find (FIB_PROTOCOL_IP6, fib_table);
-  if (fib_index == ~0)
-    return -3;
-
-  /* Lookup the localsid in such FIB table */
-  fib_node_index_t fei = fib_table_lookup_exact_match (fib_index, &pfx);
-  if (FIB_NODE_INDEX_INVALID != fei)
-    return -4;			//There is an entry for such address (the localsid addr)
-
-  /* Create a new localsid registry */
-  pool_get (sm->localsids, ls);
-  memset (ls, 0, sizeof (*ls));
-
-  clib_memcpy (&ls->localsid, localsid_addr, sizeof (ip6_address_t));
-  ls->end_psp = end_psp;
-  ls->behavior = behavior;
-  ls->nh_adj = (u32) ~ 0;
-  ls->fib_table = fib_table;
-  switch (behavior)
-    {
-    case SR_BEHAVIOR_END:
-      break;
-    case SR_BEHAVIOR_X:
-      ls->sw_if_index = sw_if_index;
-      clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
-      break;
-    case SR_BEHAVIOR_DX4:
-      ls->sw_if_index = sw_if_index;
-      clib_memcpy (&ls->next_hop.ip4, &nh_addr->ip4, sizeof (ip4_address_t));
-      break;
-    case SR_BEHAVIOR_DX6:
-      ls->sw_if_index = sw_if_index;
-      clib_memcpy (&ls->next_hop.ip6, &nh_addr->ip6, sizeof (ip6_address_t));
-      break;
-    case SR_BEHAVIOR_DT6:
-      ls->vrf_index = sw_if_index;
-      break;
-    case SR_BEHAVIOR_DX2:
-      ls->sw_if_index = sw_if_index;
-      ls->vlan_index = vlan_index;
-      break;
-    }
-
-  /* Figure out the adjacency magic for Xconnect variants */
-  if (ls->behavior == SR_BEHAVIOR_X || ls->behavior == SR_BEHAVIOR_DX4
-      || ls->behavior == SR_BEHAVIOR_DX6)
-    {
-      adj_index_t nh_adj_index = ADJ_INDEX_INVALID;
-
-      /* Retrieve the adjacency corresponding to the (OIF, next_hop) */
-      if (ls->behavior == SR_BEHAVIOR_DX6 || ls->behavior == SR_BEHAVIOR_X)
-	nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP6, VNET_LINK_IP6,
-					    nh_addr, sw_if_index);
-
-      else if (ls->behavior == SR_BEHAVIOR_DX4)
-	nh_adj_index = adj_nbr_add_or_lock (FIB_PROTOCOL_IP4, VNET_LINK_IP4,
-					    nh_addr, sw_if_index);
-
-      /* Check for ADJ creation error. If so panic */
-      if (nh_adj_index == ADJ_INDEX_INVALID)
-	{
-	  pool_put (sm->localsids, ls);
-	  return -5;
-	}
-
-      ls->nh_adj = nh_adj_index;
-    }
-
-  /* Set DPO */
-  if (ls->behavior == SR_BEHAVIOR_END || ls->behavior == SR_BEHAVIOR_X)
-    dpo_set (&dpo, sr_localsid_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
-  else if (ls->behavior > SR_BEHAVIOR_D_FIRST
-	   && ls->behavior < SR_BEHAVIOR_LAST)
-    dpo_set (&dpo, sr_localsid_d_dpo_type, DPO_PROTO_IP6, ls - sm->localsids);
-  else if (ls->behavior >= SR_BEHAVIOR_LAST)
-    {
-      sr_localsid_fn_registration_t *plugin = 0;
-      plugin = pool_elt_at_index (sm->plugin_functions,
-				  ls->behavior - SR_BEHAVIOR_LAST);
-      /* Copy the unformat memory result */
-      ls->plugin_mem = ls_plugin_mem;
-      /* Callback plugin creation function */
-      rv = plugin->creation (ls);
-      if (rv)
-	{
-	  pool_put (sm->localsids, ls);
-	  return -6;
-	}
-      dpo_set (&dpo, plugin->dpo, DPO_PROTO_IP6, ls - sm->localsids);
-    }
-
-  /* Set hash key for searching localsid by address */
-  mhash_set (&sm->sr_localsids_index_hash, localsid_addr, ls - sm->localsids,
-	     NULL);
-
-  fib_table_entry_special_dpo_add (fib_index, &pfx, FIB_SOURCE_SR,
-				   FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
-  dpo_reset (&dpo);
-
-  /* Set counter to zero */
-  vlib_validate_combined_counter (&(sm->sr_ls_valid_counters),
-				  ls - sm->localsids);
-  vlib_validate_combined_counter (&(sm->sr_ls_invalid_counters),
-				  ls - sm->localsids);
-
-  vlib_zero_combined_counter (&(sm->sr_ls_valid_counters),
-			      ls - sm->localsids);
-  vlib_zero_combined_counter (&(sm->sr_ls_invalid_counters),
-			      ls - sm->localsids);
-
-  return 0;
-}
-
-/**
- * @brief SR LocalSID CLI function.
- *
- * @see sr_cli_localsid
- */
-static clib_error_t *
-sr_cli_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
-			    vlib_cli_command_t * cmd)
-{
-  vnet_main_t *vnm = vnet_get_main ();
-  ip6_sr_main_t *sm = &sr_main;
-  u32 sw_if_index = (u32) ~ 0, vlan_index = (u32) ~ 0, fib_index = 0;
-  int is_del = 0;
-  int end_psp = 0;
-  ip6_address_t resulting_address;
-  ip46_address_t next_hop;
-  char address_set = 0;
-  char behavior = 0;
-  void *ls_plugin_mem = 0;
-
-  int rv;
-
-  memset (&resulting_address, 0, sizeof (ip6_address_t));
-  ip46_address_reset (&next_hop);
-
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (input, "del"))
-	is_del = 1;
-      else if (!address_set
-	       && unformat (input, "address %U", unformat_ip6_address,
-			    &resulting_address))
-	address_set = 1;
-      else if (!address_set
-	       && unformat (input, "addr %U", unformat_ip6_address,
-			    &resulting_address))
-	address_set = 1;
-      else if (unformat (input, "fib-table %u", &fib_index));
-      else if (vlan_index == (u32) ~ 0
-	       && unformat (input, "vlan %u", &vlan_index));
-      else if (!behavior && unformat (input, "behavior"))
-	{
-	  if (unformat (input, "end.x %U %U",
-			unformat_vnet_sw_interface, vnm, &sw_if_index,
-			unformat_ip6_address, &next_hop.ip6))
-	    behavior = SR_BEHAVIOR_X;
-	  else if (unformat (input, "end.dx6 %U %U",
-			     unformat_vnet_sw_interface, vnm, &sw_if_index,
-			     unformat_ip6_address, &next_hop.ip6))
-	    behavior = SR_BEHAVIOR_DX6;
-	  else if (unformat (input, "end.dx4 %U %U",
-			     unformat_vnet_sw_interface, vnm, &sw_if_index,
-			     unformat_ip4_address, &next_hop.ip4))
-	    behavior = SR_BEHAVIOR_DX4;
-	  else if (unformat (input, "end.dx2 %U",
-			     unformat_vnet_sw_interface, vnm, &sw_if_index))
-	    behavior = SR_BEHAVIOR_DX2;
-	  else if (unformat (input, "end.dt6 %u", &sw_if_index))
-	    behavior = SR_BEHAVIOR_DT6;
-	  else if (unformat (input, "end.dt4 %u", &sw_if_index))
-	    behavior = SR_BEHAVIOR_DT4;
-	  else
-	    {
-	      /* Loop over all the plugin behavior format functions */
-	      sr_localsid_fn_registration_t *plugin = 0, **vec_plugins = 0;
-	      sr_localsid_fn_registration_t **plugin_it = 0;
-
-	      /* Create a vector out of the plugin pool as recommended */
-        /* *INDENT-OFF* */
-        pool_foreach (plugin, sm->plugin_functions,
-        {
-          vec_add1 (vec_plugins, plugin);
-        });
-        /* *INDENT-ON* */
-
-	      vec_foreach (plugin_it, vec_plugins)
-	      {
-		if (unformat
-		    (input, "%U", (*plugin_it)->ls_unformat, &ls_plugin_mem))
-		  {
-		    behavior = (*plugin_it)->sr_localsid_function_number;
-		    break;
-		  }
-	      }
-	    }
-
-	  if (!behavior)
-	    {
-	      if (unformat (input, "end"))
-		behavior = SR_BEHAVIOR_END;
-	      else
-		break;
-	    }
-	}
-      else if (!end_psp && unformat (input, "psp"))
-	end_psp = 1;
-      else
-	break;
-    }
-
-  if (!behavior && end_psp)
-    behavior = SR_BEHAVIOR_END;
-
-  if (!address_set)
-    return clib_error_return (0,
-			      "Error: SRv6 LocalSID address is mandatory.");
-  if (!is_del && !behavior)
-    return clib_error_return (0,
-			      "Error: SRv6 LocalSID behavior is mandatory.");
-  if (vlan_index != (u32) ~ 0)
-    return clib_error_return (0,
-			      "Error: SRv6 End.DX2 with rewrite VLAN tag not supported by now.");
-  if (end_psp && !(behavior == SR_BEHAVIOR_END || behavior == SR_BEHAVIOR_X))
-    return clib_error_return (0,
-			      "Error: SRv6 PSP only compatible with End and End.X");
-
-  rv = sr_cli_localsid (is_del, &resulting_address, end_psp, behavior,
-			sw_if_index, vlan_index, fib_index, &next_hop,
-			ls_plugin_mem);
-
-  switch (rv)
-    {
-    case 0:
-      break;
-    case 1:
-      return 0;
-    case -1:
-      return clib_error_return (0,
-				"Identical localsid already exists. Requested localsid not created.");
-    case -2:
-      return clib_error_return (0,
-				"The requested localsid could not be deleted. SR localsid not found");
-    case -3:
-      return clib_error_return (0, "FIB table %u does not exist", fib_index);
-    case -4:
-      return clib_error_return (0, "There is already one FIB entry for the"
-				"requested localsid non segment routing related");
-    case -5:
-      return clib_error_return (0,
-				"Could not create ARP/ND entry for such next_hop. Internal error.");
-    case -6:
-      return clib_error_return (0,
-				"Error on the plugin based localsid creation.");
-    default:
-      return clib_error_return (0, "BUG: sr localsid returns %d", rv);
-    }
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (sr_localsid_command, static) = {
-  .path = "sr localsid",
-  .short_help = "sr localsid (del) address XX:XX::YY:YY"
-      "(fib-table 8) behavior STRING",
-  .long_help =
-    "Create SR LocalSID and binds it to a particular behavior\n"
-    "Arguments:\n"
-    "\tlocalSID IPv6_addr(128b)   LocalSID IPv6 address\n"
-    "\t(fib-table X)              Optional. VRF where to install SRv6 localsid\n"
-    "\tbehavior STRING            Specifies the behavior\n"
-    "\n\tBehaviors:\n"
-    "\tEnd\t-> Endpoint.\n"
-    "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
-    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
-    "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
-    "\t\tParameters: '<iface>'\n"
-    "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
-    "\t\tParameters: '<iface> <ip6_next_hop>'\n"
-    "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
-    "\t\tParameters: '<iface> <ip4_next_hop>'\n"
-    "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
-    "\t\tParameters: '<ip6_fib_table>'\n"
-    "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
-    "\t\tParameters: '<ip4_fib_table>'\n",
-  .function = sr_cli_localsid_command_fn,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief CLI function to 'show' all SR LocalSIDs on console.
- */
-static clib_error_t *
-show_sr_localsid_command_fn (vlib_main_t * vm, unformat_input_t * input,
-			     vlib_cli_command_t * cmd)
-{
-  vnet_main_t *vnm = vnet_get_main ();
-  ip6_sr_main_t *sm = &sr_main;
-  ip6_sr_localsid_t **localsid_list = 0;
-  ip6_sr_localsid_t *ls;
-  int i;
-
-  vlib_cli_output (vm, "SRv6 - My LocalSID Table:");
-  vlib_cli_output (vm, "=========================");
-  /* *INDENT-OFF* */
-  pool_foreach (ls, sm->localsids, ({ vec_add1 (localsid_list, ls); }));
-  /* *INDENT-ON* */
-  for (i = 0; i < vec_len (localsid_list); i++)
-    {
-      ls = localsid_list[i];
-      switch (ls->behavior)
-	{
-	case SR_BEHAVIOR_END:
-	  vlib_cli_output (vm, "\tAddress: \t%U\n\tBehavior: \tEnd",
-			   format_ip6_address, &ls->localsid);
-	  break;
-	case SR_BEHAVIOR_X:
-	  vlib_cli_output (vm,
-			   "\tAddress: \t%U\n\tBehavior: \tX (Endpoint with Layer-3 cross-connect)"
-			   "\n\tIface:  \t%U\n\tNext hop: \t%U",
-			   format_ip6_address, &ls->localsid,
-			   format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
-			   format_ip6_address, &ls->next_hop.ip6);
-	  break;
-	case SR_BEHAVIOR_DX4:
-	  vlib_cli_output (vm,
-			   "\tAddress: \t%U\n\tBehavior: \tDX4 (Endpoint with decapsulation and IPv4 cross-connect)"
-			   "\n\tIface:  \t%U\n\tNext hop: \t%U",
-			   format_ip6_address, &ls->localsid,
-			   format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
-			   format_ip4_address, &ls->next_hop.ip4);
-	  break;
-	case SR_BEHAVIOR_DX6:
-	  vlib_cli_output (vm,
-			   "\tAddress: \t%U\n\tBehavior: \tDX6 (Endpoint with decapsulation and IPv6 cross-connect)"
-			   "\n\tIface:  \t%U\n\tNext hop: \t%U",
-			   format_ip6_address, &ls->localsid,
-			   format_vnet_sw_if_index_name, vnm, ls->sw_if_index,
-			   format_ip6_address, &ls->next_hop.ip6);
-	  break;
-	case SR_BEHAVIOR_DX2:
-	  if (ls->vlan_index == (u32) ~ 0)
-	    vlib_cli_output (vm,
-			     "\tAddress: \t%U\n\tBehavior: \tDX2 (Endpoint with decapulation and Layer-2 cross-connect)"
-			     "\n\tIface:  \t%U", format_ip6_address,
-			     &ls->localsid, format_vnet_sw_if_index_name, vnm,
-			     ls->sw_if_index);
-	  else
-	    vlib_cli_output (vm,
-			     "Unsupported yet. (DX2 with egress VLAN rewrite)");
-	  break;
-	case SR_BEHAVIOR_DT6:
-	  vlib_cli_output (vm,
-			   "\tAddress: \t%U\n\tBehavior: \tDT6 (Endpoint with decapsulation and specific IPv6 table lookup)"
-			   "\n\tTable: %u", format_ip6_address, &ls->localsid,
-			   ls->fib_table);
-	  break;
-	case SR_BEHAVIOR_DT4:
-	  vlib_cli_output (vm,
-			   "\tAddress: \t%U\n\tBehavior: \tDT4 (Endpoint with decapsulation and specific IPv4 table lookup)"
-			   "\n\tTable: \t%u", format_ip6_address,
-			   &ls->localsid, ls->fib_table);
-	  break;
-	default:
-	  if (ls->behavior >= SR_BEHAVIOR_LAST)
-	    {
-	      sr_localsid_fn_registration_t *plugin =
-		pool_elt_at_index (sm->plugin_functions,
-				   ls->behavior - SR_BEHAVIOR_LAST);
-
-	      vlib_cli_output (vm, "\tAddress: \t%U\n"
-			       "\tBehavior: \t%s (%s)\n\t%U",
-			       format_ip6_address, &ls->localsid,
-			       plugin->keyword_str, plugin->def_str,
-			       plugin->ls_format, ls->plugin_mem);
-	    }
-	  else
-	    //Should never get here...
-	    vlib_cli_output (vm, "Internal error");
-	  break;
-	}
-      if (ls->end_psp)
-	vlib_cli_output (vm, "\tPSP: \tTrue\n");
-
-      /* Print counters */
-      vlib_counter_t valid, invalid;
-      vlib_get_combined_counter (&(sm->sr_ls_valid_counters), i, &valid);
-      vlib_get_combined_counter (&(sm->sr_ls_invalid_counters), i, &invalid);
-      vlib_cli_output (vm, "\tGood traffic: \t[%Ld packets : %Ld bytes]\n",
-		       valid.packets, valid.bytes);
-      vlib_cli_output (vm, "\tBad traffic:  \t[%Ld packets : %Ld bytes]\n",
-		       invalid.packets, invalid.bytes);
-      vlib_cli_output (vm, "--------------------");
-    }
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_sr_localsid_command, static) = {
-  .path = "show sr localsids",
-  .short_help = "show sr localsids",
-  .function = show_sr_localsid_command_fn,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief Function to 'clear' ALL SR localsid counters
- */
-static clib_error_t *
-clear_sr_localsid_counters_command_fn (vlib_main_t * vm,
-				       unformat_input_t * input,
-				       vlib_cli_command_t * cmd)
-{
-  ip6_sr_main_t *sm = &sr_main;
-
-  vlib_clear_combined_counters (&(sm->sr_ls_valid_counters));
-  vlib_clear_combined_counters (&(sm->sr_ls_invalid_counters));
-
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (clear_sr_localsid_counters_command, static) = {
-  .path = "clear sr localsid counters",
-  .short_help = "clear sr localsid counters",
-  .function = clear_sr_localsid_counters_command_fn,
-};
-/* *INDENT-ON* */
-
-/************************ SR LocalSID graphs node ****************************/
-/**
- * @brief SR localsid node trace
- */
-typedef struct
-{
-  u32 localsid_index;
-  ip6_address_t src, out_dst;
-  u8 sr[256];
-  u8 num_segments;
-  u8 segments_left;
-  //With SRv6 header update include flags here.
-} sr_localsid_trace_t;
-
-#define foreach_sr_localsid_error                                   \
-_(NO_INNER_HEADER, "(SR-Error) No inner IP header")                 \
-_(NO_MORE_SEGMENTS, "(SR-Error) No more segments")                  \
-_(NO_SRH, "(SR-Error) No SR header")                                \
-_(NO_PSP, "(SR-Error) PSP Not available (segments left > 0)")       \
-_(NOT_LS, "(SR-Error) Decaps not available (segments left > 0)")    \
-_(L2, "(SR-Error) SRv6 decapsulated a L2 frame without dest")
-
-typedef enum
-{
-#define _(sym,str) SR_LOCALSID_ERROR_##sym,
-  foreach_sr_localsid_error
-#undef _
-    SR_LOCALSID_N_ERROR,
-} sr_localsid_error_t;
-
-static char *sr_localsid_error_strings[] = {
-#define _(sym,string) string,
-  foreach_sr_localsid_error
-#undef _
-};
-
-#define foreach_sr_localsid_next        \
-_(ERROR, "error-drop")                  \
-_(IP6_LOOKUP, "ip6-lookup")             \
-_(IP4_LOOKUP, "ip4-lookup")             \
-_(IP6_REWRITE, "ip6-rewrite")           \
-_(IP4_REWRITE, "ip4-rewrite")           \
-_(INTERFACE_OUTPUT, "interface-output")
-
-typedef enum
-{
-#define _(s,n) SR_LOCALSID_NEXT_##s,
-  foreach_sr_localsid_next
-#undef _
-    SR_LOCALSID_N_NEXT,
-} sr_localsid_next_t;
-
-/**
- * @brief SR LocalSID graph node trace function
- *
- * @see sr_localsid
- */
-u8 *
-format_sr_localsid_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 *);
-  ip6_sr_main_t *sm = &sr_main;
-  sr_localsid_trace_t *t = va_arg (*args, sr_localsid_trace_t *);
-
-  ip6_sr_localsid_t *ls =
-    pool_elt_at_index (sm->localsids, t->localsid_index);
-
-  s =
-    format (s, "SR-LOCALSID:\n\tLocalsid: %U\n", format_ip6_address,
-	    &ls->localsid);
-  switch (ls->behavior)
-    {
-    case SR_BEHAVIOR_END:
-      s = format (s, "\tBehavior: End\n");
-      break;
-    case SR_BEHAVIOR_DX6:
-      s = format (s, "\tBehavior: Decapsulation with IPv6 L3 xconnect\n");
-      break;
-    case SR_BEHAVIOR_DX4:
-      s = format (s, "\tBehavior: Decapsulation with IPv4 L3 xconnect\n");
-      break;
-    case SR_BEHAVIOR_X:
-      s = format (s, "\tBehavior: IPv6 L3 xconnect\n");
-      break;
-    case SR_BEHAVIOR_DT6:
-      s = format (s, "\tBehavior: Decapsulation with IPv6 Table lookup\n");
-      break;
-    case SR_BEHAVIOR_DT4:
-      s = format (s, "\tBehavior: Decapsulation with IPv4 Table lookup\n");
-      break;
-    case SR_BEHAVIOR_DX2:
-      s = format (s, "\tBehavior: Decapsulation with L2 xconnect\n");
-      break;
-    default:
-      s = format (s, "\tBehavior: defined in plugin\n");	//TODO
-      break;
-    }
-  if (t->num_segments != 0xFF)
-    {
-      if (t->num_segments > 0)
-	{
-	  s = format (s, "\tSegments left: %d\n", t->num_segments);
-	  s = format (s, "\tSID list: [in ietf order]");
-	  int i = 0;
-	  for (i = 0; i < t->num_segments; i++)
-	    {
-	      s = format (s, "\n\t-> %U", format_ip6_address,
-			  (ip6_address_t *) & t->sr[i *
-						    sizeof (ip6_address_t)]);
-	    }
-	}
-    }
-  return s;
-}
-
-/**
- * @brief Function doing End processing.
- */
-static_always_inline void
-end_srh_processing (vlib_node_runtime_t * node,
-		    vlib_buffer_t * b0,
-		    ip6_header_t * ip0,
-		    ip6_sr_header_t * sr0,
-		    ip6_sr_localsid_t * ls0, u32 * next0)
-{
-  ip6_address_t *new_dst0;
-
-  if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR))
-    {
-      if (PREDICT_TRUE (sr0->segments_left != 0))
-	{
-	  sr0->segments_left -= 1;
-	  new_dst0 = (ip6_address_t *) (sr0->segments);
-	  new_dst0 += sr0->segments_left;
-	  ip0->dst_address.as_u64[0] = new_dst0->as_u64[0];
-	  ip0->dst_address.as_u64[1] = new_dst0->as_u64[1];
-
-	  if (ls0->behavior == SR_BEHAVIOR_X)
-	    {
-	      vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
-	      *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
-	    }
-	}
-      else
-	{
-	  *next0 = SR_LOCALSID_NEXT_ERROR;
-	  b0->error = node->errors[SR_LOCALSID_ERROR_NO_MORE_SEGMENTS];
-	}
-    }
-  else
-    {
-      /* Error. Routing header of type != SR */
-      *next0 = SR_LOCALSID_NEXT_ERROR;
-      b0->error = node->errors[SR_LOCALSID_ERROR_NO_SRH];
-    }
-}
-
-/*
- * @brief Function doing SRH processing for D* variants
- */
-//FixME. I must crosscheck that next_proto matches the localsid
-static_always_inline void
-end_decaps_srh_processing (vlib_node_runtime_t * node,
-			   vlib_buffer_t * b0,
-			   ip6_header_t * ip0,
-			   ip6_sr_header_t * sr0,
-			   ip6_sr_localsid_t * ls0, u32 * next0)
-{
-  /* Compute the size of the IPv6 header with all Ext. headers */
-  u8 next_proto;
-  ip6_ext_header_t *next_ext_header;
-  u16 total_size = 0;
-
-  next_proto = ip0->protocol;
-  next_ext_header = (void *) (ip0 + 1);
-  total_size = sizeof (ip6_header_t);
-  while (ip6_ext_hdr (next_proto))
-    {
-      total_size += ip6_ext_header_len (next_ext_header);
-      next_proto = next_ext_header->next_hdr;
-      next_ext_header = ip6_ext_next_header (next_ext_header);
-    }
-
-  /* Ensure this is the last segment. Otherwise drop. */
-  if (sr0 && sr0->segments_left != 0)
-    {
-      *next0 = SR_LOCALSID_NEXT_ERROR;
-      b0->error = node->errors[SR_LOCALSID_ERROR_NOT_LS];
-      return;
-    }
-
-  switch (next_proto)
-    {
-    case IP_PROTOCOL_IPV6:
-      /* Encap-End IPv6. Pop outer IPv6 header. */
-      if (ls0->behavior == SR_BEHAVIOR_DX6)
-	{
-	  vlib_buffer_advance (b0, total_size);
-	  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
-	  *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
-	  return;
-	}
-      else if (ls0->behavior == SR_BEHAVIOR_DT6)
-	{
-	  vlib_buffer_advance (b0, total_size);
-	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->fib_table;
-	  return;
-	}
-      break;
-    case IP_PROTOCOL_IP_IN_IP:
-      /* Encap-End IPv4. Pop outer IPv6 header */
-      if (ls0->behavior == SR_BEHAVIOR_DX4)
-	{
-	  vlib_buffer_advance (b0, total_size);
-	  vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
-	  *next0 = SR_LOCALSID_NEXT_IP4_REWRITE;
-	  return;
-	}
-      else if (ls0->behavior == SR_BEHAVIOR_DT4)
-	{
-	  vlib_buffer_advance (b0, total_size);
-	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->fib_table;
-	  *next0 = SR_LOCALSID_NEXT_IP4_LOOKUP;
-	  return;
-	}
-      break;
-    case IP_PROTOCOL_IP6_NONXT:
-      /* L2 encaps */
-      if (ls0->behavior == SR_BEHAVIOR_DX2)
-	{
-	  vlib_buffer_advance (b0, total_size);
-	  vnet_buffer (b0)->sw_if_index[VLIB_TX] = ls0->sw_if_index;
-	  *next0 = SR_LOCALSID_NEXT_INTERFACE_OUTPUT;
-	  return;
-	}
-      break;
-    }
-  *next0 = SR_LOCALSID_NEXT_ERROR;
-  b0->error = node->errors[SR_LOCALSID_ERROR_NO_INNER_HEADER];
-  return;
-}
-
-/**
- * @brief Function doing End processing with PSP
- */
-static_always_inline void
-end_psp_srh_processing (vlib_node_runtime_t * node,
-			vlib_buffer_t * b0,
-			ip6_header_t * ip0,
-			ip6_ext_header_t * prev0,
-			ip6_sr_header_t * sr0,
-			ip6_sr_localsid_t * ls0, u32 * next0)
-{
-  u32 new_l0, sr_len;
-  u64 *copy_dst0, *copy_src0;
-  u32 copy_len_u64s0 = 0;
-  int i;
-
-  if (PREDICT_TRUE (sr0->type == ROUTING_HEADER_TYPE_SR))
-    {
-      if (PREDICT_TRUE (sr0->segments_left == 1))
-	{
-	  ip0->dst_address.as_u64[0] = sr0->segments->as_u64[0];
-	  ip0->dst_address.as_u64[1] = sr0->segments->as_u64[1];
-
-	  /* Remove the SRH taking care of the rest of IPv6 ext header */
-	  if (prev0)
-	    prev0->next_hdr = sr0->protocol;
-	  else
-	    ip0->protocol = sr0->protocol;
-
-	  sr_len = ip6_ext_header_len (sr0);
-	  vlib_buffer_advance (b0, sr_len);
-	  new_l0 = clib_net_to_host_u16 (ip0->payload_length) - sr_len;
-	  ip0->payload_length = clib_host_to_net_u16 (new_l0);
-	  copy_src0 = (u64 *) ip0;
-	  copy_dst0 = copy_src0 + (sr0->length + 1);
-	  /* number of 8 octet units to copy
-	   * By default in absence of extension headers it is equal to length of ip6 header
-	   * With extension headers it number of 8 octet units of ext headers preceding
-	   * SR header
-	   */
-	  copy_len_u64s0 =
-	    (((u8 *) sr0 - (u8 *) ip0) - sizeof (ip6_header_t)) >> 3;
-	  copy_dst0[4 + copy_len_u64s0] = copy_src0[4 + copy_len_u64s0];
-	  copy_dst0[3 + copy_len_u64s0] = copy_src0[3 + copy_len_u64s0];
-	  copy_dst0[2 + copy_len_u64s0] = copy_src0[2 + copy_len_u64s0];
-	  copy_dst0[1 + copy_len_u64s0] = copy_src0[1 + copy_len_u64s0];
-	  copy_dst0[0 + copy_len_u64s0] = copy_src0[0 + copy_len_u64s0];
-
-	  for (i = copy_len_u64s0 - 1; i >= 0; i--)
-	    {
-	      copy_dst0[i] = copy_src0[i];
-	    }
-
-	  if (ls0->behavior == SR_BEHAVIOR_X)
-	    {
-	      vnet_buffer (b0)->ip.adj_index[VLIB_TX] = ls0->nh_adj;
-	      *next0 = SR_LOCALSID_NEXT_IP6_REWRITE;
-	    }
-	  return;
-	}
-    }
-  /* Error. Routing header of type != SR */
-  *next0 = SR_LOCALSID_NEXT_ERROR;
-  b0->error = node->errors[SR_LOCALSID_ERROR_NO_PSP];
-}
-
-/**
- * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
- */
-static uword
-sr_localsid_d_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
-		  vlib_frame_t * from_frame)
-{
-  u32 n_left_from, next_index, *from, *to_next;
-  ip6_sr_main_t *sm = &sr_main;
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-  next_index = node->cached_next_index;
-  u32 thread_index = vlib_get_thread_index ();
-
-  while (n_left_from > 0)
-    {
-      u32 n_left_to_next;
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
-      /* Quad - Loop */
-      while (n_left_from >= 8 && n_left_to_next >= 4)
-	{
-	  u32 bi0, bi1, bi2, bi3;
-	  vlib_buffer_t *b0, *b1, *b2, *b3;
-	  ip6_header_t *ip0, *ip1, *ip2, *ip3;
-	  ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
-	  ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
-	  u32 next0, next1, next2, next3;
-	  next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
-	  ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
-
-	  /* Prefetch next iteration. */
-	  {
-	    vlib_buffer_t *p4, *p5, *p6, *p7;
-
-	    p4 = vlib_get_buffer (vm, from[4]);
-	    p5 = vlib_get_buffer (vm, from[5]);
-	    p6 = vlib_get_buffer (vm, from[6]);
-	    p7 = vlib_get_buffer (vm, from[7]);
-
-	    /* Prefetch the buffer header and packet for the N+4 loop iteration */
-	    vlib_prefetch_buffer_header (p4, LOAD);
-	    vlib_prefetch_buffer_header (p5, LOAD);
-	    vlib_prefetch_buffer_header (p6, LOAD);
-	    vlib_prefetch_buffer_header (p7, LOAD);
-
-	    CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
-	  }
-
-	  to_next[0] = bi0 = from[0];
-	  to_next[1] = bi1 = from[1];
-	  to_next[2] = bi2 = from[2];
-	  to_next[3] = bi3 = from[3];
-	  from += 4;
-	  to_next += 4;
-	  n_left_from -= 4;
-	  n_left_to_next -= 4;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-	  b1 = vlib_get_buffer (vm, bi1);
-	  b2 = vlib_get_buffer (vm, bi2);
-	  b3 = vlib_get_buffer (vm, bi3);
-
-	  ls0 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-	  ls1 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-	  ls2 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-	  ls3 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-
-	  ip0 = vlib_buffer_get_current (b0);
-	  ip1 = vlib_buffer_get_current (b1);
-	  ip2 = vlib_buffer_get_current (b2);
-	  ip3 = vlib_buffer_get_current (b3);
-
-	  ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
-	  ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE);
-	  ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE);
-	  ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE);
-
-	  end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
-	  end_decaps_srh_processing (node, b1, ip1, sr1, ls1, &next1);
-	  end_decaps_srh_processing (node, b2, ip2, sr2, ls2, &next2);
-	  end_decaps_srh_processing (node, b3, ip3, sr3, ls3, &next3);
-
-	  //TODO: trace.
-
-	  vlib_increment_combined_counter
-	    (((next0 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b0));
-
-	  vlib_increment_combined_counter
-	    (((next1 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b1));
-
-	  vlib_increment_combined_counter
-	    (((next2 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b2));
-
-	  vlib_increment_combined_counter
-	    (((next3 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b3));
-
-	  vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
-					   n_left_to_next, bi0, bi1, bi2, bi3,
-					   next0, next1, next2, next3);
-	}
-
-      /* Single loop for potentially the last three packets */
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-	  ip6_header_t *ip0;
-	  ip6_ext_header_t *prev0;
-	  ip6_sr_header_t *sr0;
-	  u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
-	  ip6_sr_localsid_t *ls0;
-
-	  bi0 = from[0];
-	  to_next[0] = bi0;
-	  from += 1;
-	  to_next += 1;
-	  n_left_from -= 1;
-	  n_left_to_next -= 1;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-	  ip0 = vlib_buffer_get_current (b0);
-
-	  /* Lookup the SR End behavior based on IP DA (adj) */
-	  ls0 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-
-	  /* Find SRH as well as previous header */
-	  ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
-
-	  /* SRH processing and End variants */
-	  end_decaps_srh_processing (node, b0, ip0, sr0, ls0, &next0);
-
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sr_localsid_trace_t *tr =
-		vlib_add_trace (vm, node, b0, sizeof (*tr));
-	      tr->num_segments = 0;
-	      tr->localsid_index = ls0 - sm->localsids;
-
-	      if (ip0 == vlib_buffer_get_current (b0))
-		{
-		  clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
-			       sizeof (tr->src.as_u8));
-		  clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
-			       sizeof (tr->out_dst.as_u8));
-		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
-		      && sr0->type == ROUTING_HEADER_TYPE_SR)
-		    {
-		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
-		      tr->num_segments =
-			sr0->length * 8 / sizeof (ip6_address_t);
-		      tr->segments_left = sr0->segments_left;
-		    }
-		}
-	      else
-		tr->num_segments = 0xFF;
-	    }
-
-	  /* Increase the counters */
-	  vlib_increment_combined_counter
-	    (((next0 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b0));
-
-	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
-					   n_left_to_next, bi0, next0);
-	}
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-  return from_frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sr_localsid_d_node) = {
-  .function = sr_localsid_d_fn,
-  .name = "sr-localsid-d",
-  .vector_size = sizeof (u32),
-  .format_trace = format_sr_localsid_trace,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = SR_LOCALSID_N_ERROR,
-  .error_strings = sr_localsid_error_strings,
-  .n_next_nodes = SR_LOCALSID_N_NEXT,
-  .next_nodes = {
-#define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
-    foreach_sr_localsid_next
-#undef _
-  },
-};
-/* *INDENT-ON* */
-
-/**
- * @brief SR LocalSID graph node. Supports all default SR Endpoint variants
- */
-static uword
-sr_localsid_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
-		vlib_frame_t * from_frame)
-{
-  u32 n_left_from, next_index, *from, *to_next;
-  ip6_sr_main_t *sm = &sr_main;
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-  next_index = node->cached_next_index;
-  u32 thread_index = vlib_get_thread_index ();
-
-  while (n_left_from > 0)
-    {
-      u32 n_left_to_next;
-      vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
-      /* Quad - Loop */
-      while (n_left_from >= 8 && n_left_to_next >= 4)
-	{
-	  u32 bi0, bi1, bi2, bi3;
-	  vlib_buffer_t *b0, *b1, *b2, *b3;
-	  ip6_header_t *ip0, *ip1, *ip2, *ip3;
-	  ip6_sr_header_t *sr0, *sr1, *sr2, *sr3;
-	  ip6_ext_header_t *prev0, *prev1, *prev2, *prev3;
-	  u32 next0, next1, next2, next3;
-	  next0 = next1 = next2 = next3 = SR_LOCALSID_NEXT_IP6_LOOKUP;
-	  ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
-
-	  /* Prefetch next iteration. */
-	  {
-	    vlib_buffer_t *p4, *p5, *p6, *p7;
-
-	    p4 = vlib_get_buffer (vm, from[4]);
-	    p5 = vlib_get_buffer (vm, from[5]);
-	    p6 = vlib_get_buffer (vm, from[6]);
-	    p7 = vlib_get_buffer (vm, from[7]);
-
-	    /* Prefetch the buffer header and packet for the N+2 loop iteration */
-	    vlib_prefetch_buffer_header (p4, LOAD);
-	    vlib_prefetch_buffer_header (p5, LOAD);
-	    vlib_prefetch_buffer_header (p6, LOAD);
-	    vlib_prefetch_buffer_header (p7, LOAD);
-
-	    CLIB_PREFETCH (p4->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
-	    CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
-	  }
-
-	  to_next[0] = bi0 = from[0];
-	  to_next[1] = bi1 = from[1];
-	  to_next[2] = bi2 = from[2];
-	  to_next[3] = bi3 = from[3];
-	  from += 4;
-	  to_next += 4;
-	  n_left_from -= 4;
-	  n_left_to_next -= 4;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-	  b1 = vlib_get_buffer (vm, bi1);
-	  b2 = vlib_get_buffer (vm, bi2);
-	  b3 = vlib_get_buffer (vm, bi3);
-
-	  ip0 = vlib_buffer_get_current (b0);
-	  ip1 = vlib_buffer_get_current (b1);
-	  ip2 = vlib_buffer_get_current (b2);
-	  ip3 = vlib_buffer_get_current (b3);
-
-	  ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
-	  ip6_ext_header_find_t (ip1, prev1, sr1, IP_PROTOCOL_IPV6_ROUTE);
-	  ip6_ext_header_find_t (ip2, prev2, sr2, IP_PROTOCOL_IPV6_ROUTE);
-	  ip6_ext_header_find_t (ip3, prev3, sr3, IP_PROTOCOL_IPV6_ROUTE);
-
-	  ls0 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-	  ls1 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-	  ls2 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-	  ls3 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-
-	  if (ls0->end_psp)
-	    end_psp_srh_processing (node, b0, ip0, prev0, sr0, ls0, &next0);
-	  else
-	    end_srh_processing (node, b0, ip0, sr0, ls0, &next0);
-
-	  if (ls1->end_psp)
-	    end_psp_srh_processing (node, b1, ip1, prev1, sr1, ls1, &next1);
-	  else
-	    end_srh_processing (node, b1, ip1, sr1, ls1, &next1);
-
-	  if (ls2->end_psp)
-	    end_psp_srh_processing (node, b2, ip2, prev2, sr2, ls2, &next2);
-	  else
-	    end_srh_processing (node, b2, ip2, sr2, ls2, &next2);
-
-	  if (ls3->end_psp)
-	    end_psp_srh_processing (node, b3, ip3, prev3, sr3, ls3, &next3);
-	  else
-	    end_srh_processing (node, b3, ip3, sr3, ls3, &next3);
-
-	  //TODO: proper trace.
-
-	  vlib_increment_combined_counter
-	    (((next0 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b0));
-
-	  vlib_increment_combined_counter
-	    (((next1 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls1 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b1));
-
-	  vlib_increment_combined_counter
-	    (((next2 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls2 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b2));
-
-	  vlib_increment_combined_counter
-	    (((next3 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls3 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b3));
-
-	  vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
-					   n_left_to_next, bi0, bi1, bi2, bi3,
-					   next0, next1, next2, next3);
-	}
-
-      /* Single loop for potentially the last three packets */
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-	  ip6_header_t *ip0 = 0;
-	  ip6_ext_header_t *prev0;
-	  ip6_sr_header_t *sr0;
-	  u32 next0 = SR_LOCALSID_NEXT_IP6_LOOKUP;
-	  ip6_sr_localsid_t *ls0;
-
-	  bi0 = from[0];
-	  to_next[0] = bi0;
-	  from += 1;
-	  to_next += 1;
-	  n_left_from -= 1;
-	  n_left_to_next -= 1;
-
-	  b0 = vlib_get_buffer (vm, bi0);
-	  ip0 = vlib_buffer_get_current (b0);
-	  ip6_ext_header_find_t (ip0, prev0, sr0, IP_PROTOCOL_IPV6_ROUTE);
-
-	  /* Lookup the SR End behavior based on IP DA (adj) */
-	  ls0 =
-	    pool_elt_at_index (sm->localsids,
-			       vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-
-	  /* SRH processing */
-	  if (ls0->end_psp)
-	    end_psp_srh_processing (node, b0, ip0, prev0, sr0, ls0, &next0);
-	  else
-	    end_srh_processing (node, b0, ip0, sr0, ls0, &next0);
-
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sr_localsid_trace_t *tr =
-		vlib_add_trace (vm, node, b0, sizeof (*tr));
-	      tr->num_segments = 0;
-	      tr->localsid_index = ls0 - sm->localsids;
-
-	      if (ip0 == vlib_buffer_get_current (b0))
-		{
-		  clib_memcpy (tr->src.as_u8, ip0->src_address.as_u8,
-			       sizeof (tr->src.as_u8));
-		  clib_memcpy (tr->out_dst.as_u8, ip0->dst_address.as_u8,
-			       sizeof (tr->out_dst.as_u8));
-		  if (ip0->protocol == IP_PROTOCOL_IPV6_ROUTE
-		      && sr0->type == ROUTING_HEADER_TYPE_SR)
-		    {
-		      clib_memcpy (tr->sr, sr0->segments, sr0->length * 8);
-		      tr->num_segments =
-			sr0->length * 8 / sizeof (ip6_address_t);
-		      tr->segments_left = sr0->segments_left;
-		    }
-		}
-	      else
-		{
-		  tr->num_segments = 0xFF;
-		}
-	    }
-
-	  vlib_increment_combined_counter
-	    (((next0 ==
-	       SR_LOCALSID_NEXT_ERROR) ? &(sm->sr_ls_invalid_counters) :
-	      &(sm->sr_ls_valid_counters)), thread_index, ls0 - sm->localsids,
-	     1, vlib_buffer_length_in_chain (vm, b0));
-
-	  vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
-					   n_left_to_next, bi0, next0);
-	}
-      vlib_put_next_frame (vm, node, next_index, n_left_to_next);
-    }
-  return from_frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sr_localsid_node) = {
-  .function = sr_localsid_fn,
-  .name = "sr-localsid",
-  .vector_size = sizeof (u32),
-  .format_trace = format_sr_localsid_trace,
-  .type = VLIB_NODE_TYPE_INTERNAL,
-  .n_errors = SR_LOCALSID_N_ERROR,
-  .error_strings = sr_localsid_error_strings,
-  .n_next_nodes = SR_LOCALSID_N_NEXT,
-  .next_nodes = {
-#define _(s,n) [SR_LOCALSID_NEXT_##s] = n,
-    foreach_sr_localsid_next
-#undef _
-  },
-};
-/* *INDENT-ON* */
-
-static u8 *
-format_sr_dpo (u8 * s, va_list * args)
-{
-  index_t index = va_arg (*args, index_t);
-  CLIB_UNUSED (u32 indent) = va_arg (*args, u32);
-
-  return (format (s, "SR: localsid_index:[%d]", index));
-}
-
-const static dpo_vft_t sr_loc_vft = {
-  .dv_lock = sr_dpo_lock,
-  .dv_unlock = sr_dpo_unlock,
-  .dv_format = format_sr_dpo,
-};
-
-const static char *const sr_loc_ip6_nodes[] = {
-  "sr-localsid",
-  NULL,
-};
-
-const static char *const *const sr_loc_nodes[DPO_PROTO_NUM] = {
-  [DPO_PROTO_IP6] = sr_loc_ip6_nodes,
-};
-
-const static char *const sr_loc_d_ip6_nodes[] = {
-  "sr-localsid-d",
-  NULL,
-};
-
-const static char *const *const sr_loc_d_nodes[DPO_PROTO_NUM] = {
-  [DPO_PROTO_IP6] = sr_loc_d_ip6_nodes,
-};
-
-
-/*************************** SR LocalSID plugins ******************************/
-/**
- * @brief SR LocalSID plugin registry
- */
-int
-sr_localsid_register_function (vlib_main_t * vm, u8 * fn_name,
-			       u8 * keyword_str, u8 * def_str,
-			       u8 * params_str, dpo_type_t * dpo,
-			       format_function_t * ls_format,
-			       unformat_function_t * ls_unformat,
-			       sr_plugin_callback_t * creation_fn,
-			       sr_plugin_callback_t * removal_fn)
-{
-  ip6_sr_main_t *sm = &sr_main;
-  uword *p;
-
-  sr_localsid_fn_registration_t *plugin;
-
-  /* Did this function exist? If so update it */
-  p = hash_get_mem (sm->plugin_functions_by_key, fn_name);
-  if (p)
-    {
-      plugin = pool_elt_at_index (sm->plugin_functions, p[0]);
-    }
-  /* Else create a new one and set hash key */
-  else
-    {
-      pool_get (sm->plugin_functions, plugin);
-      hash_set_mem (sm->plugin_functions_by_key, fn_name,
-		    plugin - sm->plugin_functions);
-    }
-
-  memset (plugin, 0, sizeof (*plugin));
-
-  plugin->sr_localsid_function_number = (plugin - sm->plugin_functions);
-  plugin->sr_localsid_function_number += SR_BEHAVIOR_LAST;
-  plugin->ls_format = ls_format;
-  plugin->ls_unformat = ls_unformat;
-  plugin->creation = creation_fn;
-  plugin->removal = removal_fn;
-  clib_memcpy (&plugin->dpo, dpo, sizeof (dpo_type_t));
-  plugin->function_name = format (0, "%s%c", fn_name, 0);
-  plugin->keyword_str = format (0, "%s%c", keyword_str, 0);
-  plugin->def_str = format (0, "%s%c", def_str, 0);
-  plugin->params_str = format (0, "%s%c", params_str, 0);
-
-  return plugin->sr_localsid_function_number;
-}
-
-/**
- * @brief CLI function to 'show' all available SR LocalSID behaviors
- */
-static clib_error_t *
-show_sr_localsid_behaviors_command_fn (vlib_main_t * vm,
-				       unformat_input_t * input,
-				       vlib_cli_command_t * cmd)
-{
-  ip6_sr_main_t *sm = &sr_main;
-  sr_localsid_fn_registration_t *plugin;
-  sr_localsid_fn_registration_t **plugins_vec = 0;
-  int i;
-
-  vlib_cli_output (vm,
-		   "SR LocalSIDs behaviors:\n-----------------------\n\n");
-
-  /* *INDENT-OFF* */
-  pool_foreach (plugin, sm->plugin_functions,
-    ({ vec_add1 (plugins_vec, plugin); }));
-  /* *INDENT-ON* */
-
-  /* Print static behaviors */
-  vlib_cli_output (vm, "Default behaviors:\n"
-		   "\tEnd\t-> Endpoint.\n"
-		   "\tEnd.X\t-> Endpoint with decapsulation and Layer-3 cross-connect.\n"
-		   "\t\tParameters: '<iface> <ip6_next_hop>'\n"
-		   "\tEnd.DX2\t-> Endpoint with decapsulation and Layer-2 cross-connect.\n"
-		   "\t\tParameters: '<iface>'\n"
-		   "\tEnd.DX6\t-> Endpoint with decapsulation and IPv6 cross-connect.\n"
-		   "\t\tParameters: '<iface> <ip6_next_hop>'\n"
-		   "\tEnd.DX4\t-> Endpoint with decapsulation and IPv4 cross-connect.\n"
-		   "\t\tParameters: '<iface> <ip4_next_hop>'\n"
-		   "\tEnd.DT6\t-> Endpoint with decapsulation and specific IPv6 table lookup.\n"
-		   "\t\tParameters: '<ip6_fib_table>'\n"
-		   "\tEnd.DT4\t-> Endpoint with decapsulation and specific IPv4 table lookup.\n"
-		   "\t\tParameters: '<ip4_fib_table>'\n");
-  vlib_cli_output (vm, "Plugin behaviors:\n");
-  for (i = 0; i < vec_len (plugins_vec); i++)
-    {
-      plugin = plugins_vec[i];
-      vlib_cli_output (vm, "\t%s\t-> %s.\n", plugin->keyword_str,
-		       plugin->def_str);
-      vlib_cli_output (vm, "\t\tParameters: '%s'\n", plugin->params_str);
-    }
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_sr_localsid_behaviors_command, static) = {
-  .path = "show sr localsids behaviors",
-  .short_help = "show sr localsids behaviors",
-  .function = show_sr_localsid_behaviors_command_fn,
-};
-/* *INDENT-ON* */
-
-/**
- * @brief SR LocalSID initialization
- */
-clib_error_t *
-sr_localsids_init (vlib_main_t * vm)
-{
-  /* Init memory for function keys */
-  ip6_sr_main_t *sm = &sr_main;
-  mhash_init (&sm->sr_localsids_index_hash, sizeof (uword),
-	      sizeof (ip6_address_t));
-  /* Init SR behaviors DPO type */
-  sr_localsid_dpo_type = dpo_register_new_type (&sr_loc_vft, sr_loc_nodes);
-  /* Init SR behaviors DPO type */
-  sr_localsid_d_dpo_type =
-    dpo_register_new_type (&sr_loc_vft, sr_loc_d_nodes);
-  /* Init memory for localsid plugins */
-  sm->plugin_functions_by_key = hash_create_string (0, sizeof (uword));
-  return 0;
-}
-
-VLIB_INIT_FUNCTION (sr_localsids_init);
-/*
-* fd.io coding-style-patch-verification: ON
-*
-* Local Variables:
-* eval: (c-set-style "gnu")
-* End:
-*/