sctp: move to plugins, disabled by default

Removed sctp buffer metadata from vnet/buffer.h, added it to the
plugin. Add registration APIs for plugin-based vlib_buffer_opaque /
opaque2 decoders, used by "pcap dispatch trace ..." for display in the
wireshark dissector.

Type:refactor

Not actively maintained.

Change-Id: Ie4cb6ba66f68b3b3a7d7d2c63c917fdccf994371
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>

1 files changed, 0 insertions, 2530 deletions

diff --git a/src/vnet/sctp/sctp_input.c b/src/vnet/sctp/sctp_input.c
deleted file mode 100644
index b102d51083a..00000000000
--- a/src/vnet/sctp/sctp_input.c
+++ /dev/null
@@ -1,2530 +0,0 @@
-/*
- * Copyright (c) 2017 SUSE LLC.
- * 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.
- */
-#include <vppinfra/sparse_vec.h>
-#include <vnet/sctp/sctp.h>
-#include <vnet/sctp/sctp_packet.h>
-#include <vnet/sctp/sctp_debug.h>
-#include <vnet/session/session.h>
-#include <math.h>
-
-static char *sctp_error_strings[] = {
-#define sctp_error(n,s) s,
-#include <vnet/sctp/sctp_error.def>
-#undef sctp_error
-};
-
-/* All SCTP nodes have the same outgoing arcs */
-#define foreach_sctp_state_next                  \
-  _ (DROP4, "ip4-drop")                         \
-  _ (DROP6, "ip6-drop")                         \
-  _ (SCTP4_OUTPUT, "sctp4-output")                \
-  _ (SCTP6_OUTPUT, "sctp6-output")
-
-typedef enum _sctp_established_phase_next
-{
-#define _(s,n) SCTP_ESTABLISHED_PHASE_NEXT_##s,
-  foreach_sctp_state_next
-#undef _
-    SCTP_ESTABLISHED_PHASE_N_NEXT,
-} sctp_established_phase_next_t;
-
-typedef enum _sctp_rcv_phase_next
-{
-#define _(s,n) SCTP_RCV_PHASE_NEXT_##s,
-  foreach_sctp_state_next
-#undef _
-    SCTP_RCV_PHASE_N_NEXT,
-} sctp_rcv_phase_next_t;
-
-typedef enum _sctp_listen_phase_next
-{
-#define _(s,n) SCTP_LISTEN_PHASE_NEXT_##s,
-  foreach_sctp_state_next
-#undef _
-    SCTP_LISTEN_PHASE_N_NEXT,
-} sctp_listen_phase_next_t;
-
-typedef enum _sctp_shutdown_phase_next
-{
-#define _(s,n) SCTP_SHUTDOWN_PHASE_NEXT_##s,
-  foreach_sctp_state_next
-#undef _
-    SCTP_SHUTDOWN_PHASE_N_NEXT,
-} sctp_shutdown_phase_next_t;
-
-/* Generic, state independent indices */
-typedef enum _sctp_state_next
-{
-#define _(s,n) SCTP_NEXT_##s,
-  foreach_sctp_state_next
-#undef _
-    SCTP_STATE_N_NEXT,
-} sctp_state_next_t;
-
-typedef enum _sctp_input_next
-{
-  SCTP_INPUT_NEXT_DROP,
-  SCTP_INPUT_NEXT_LISTEN_PHASE,
-  SCTP_INPUT_NEXT_RCV_PHASE,
-  SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
-  SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-  SCTP_INPUT_NEXT_PUNT_PHASE,
-  SCTP_INPUT_N_NEXT
-} sctp_input_next_t;
-
-#ifndef CLIB_MARCH_VARIANT
-char *
-phase_to_string (u8 phase)
-{
-  switch (phase)
-    {
-    case SCTP_INPUT_NEXT_DROP:
-      return "SCTP_INPUT_NEXT_DROP";
-    case SCTP_INPUT_NEXT_LISTEN_PHASE:
-      return "SCTP_INPUT_NEXT_LISTEN_PHASE";
-    case SCTP_INPUT_NEXT_RCV_PHASE:
-      return "SCTP_INPUT_NEXT_RCV_PHASE";
-    case SCTP_INPUT_NEXT_ESTABLISHED_PHASE:
-      return "SCTP_INPUT_NEXT_ESTABLISHED_PHASE";
-    case SCTP_INPUT_NEXT_SHUTDOWN_PHASE:
-      return "SCTP_INPUT_NEXT_SHUTDOWN_PHASE";
-    case SCTP_INPUT_NEXT_PUNT_PHASE:
-      return "SCTP_INPUT_NEXT_PUNT_PHASE";
-    }
-  return NULL;
-}
-#endif /* CLIB_MARCH_VARIANT */
-
-#define foreach_sctp4_input_next                 \
-  _ (DROP, "error-drop")                         \
-  _ (RCV_PHASE, "sctp4-rcv")                    \
-  _ (LISTEN_PHASE, "sctp4-listen")     	 \
-  _ (ESTABLISHED_PHASE, "sctp4-established")     	 \
-  _ (SHUTDOWN_PHASE, "sctp4-shutdown")	\
-  _ (PUNT_PHASE, "ip4-punt")
-
-
-#define foreach_sctp6_input_next                 \
-  _ (DROP, "error-drop")                         \
-  _ (RCV_PHASE, "sctp6-rcv")                    \
-  _ (LISTEN_PHASE, "sctp6-listen")     	 \
-  _ (ESTABLISHED_PHASE, "sctp6-established")     	 \
-  _ (SHUTDOWN_PHASE, "sctp6-shutdown")		\
-  _ (PUNT_PHASE, "ip6-punt")
-
-static u8
-sctp_lookup_is_valid (transport_connection_t * trans_conn,
-		      sctp_header_t * sctp_hdr)
-{
-  sctp_connection_t *sctp_conn =
-    sctp_get_connection_from_transport (trans_conn);
-
-  if (!sctp_conn)
-    return 1;
-
-  u8 is_valid = (trans_conn->lcl_port == sctp_hdr->dst_port
-		 && (sctp_conn->state == SCTP_STATE_CLOSED
-		     || trans_conn->rmt_port == sctp_hdr->src_port));
-
-  return is_valid;
-}
-
-/**
- * Lookup transport connection
- */
-static sctp_connection_t *
-sctp_lookup_connection (u32 fib_index, vlib_buffer_t * b, u8 thread_index,
-			u8 is_ip4)
-{
-  sctp_main_t *tm = vnet_get_sctp_main ();
-  sctp_header_t *sctp_hdr;
-  transport_connection_t *trans_conn;
-  sctp_connection_t *sctp_conn;
-  u8 is_filtered, i;
-  if (is_ip4)
-    {
-      ip4_header_t *ip4_hdr;
-      ip4_hdr = vlib_buffer_get_current (b);
-      sctp_hdr = ip4_next_header (ip4_hdr);
-      trans_conn = session_lookup_connection_wt4 (fib_index,
-						  &ip4_hdr->dst_address,
-						  &ip4_hdr->src_address,
-						  sctp_hdr->dst_port,
-						  sctp_hdr->src_port,
-						  TRANSPORT_PROTO_SCTP,
-						  thread_index, &is_filtered);
-      if (trans_conn == 0)	/* Not primary connection */
-	{
-	  for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
-	    {
-	      if ((tm->connections[thread_index]->sub_conn[i].
-		   connection.lcl_ip.ip4.as_u32 ==
-		   ip4_hdr->dst_address.as_u32)
-		  && (tm->connections[thread_index]->sub_conn[i].
-		      connection.rmt_ip.ip4.as_u32 ==
-		      ip4_hdr->src_address.as_u32))
-		{
-		  trans_conn =
-		    &tm->connections[thread_index]->sub_conn[i].connection;
-		  break;
-		}
-	    }
-	}
-      ASSERT (trans_conn != 0);
-      ASSERT (sctp_lookup_is_valid (trans_conn, sctp_hdr));
-    }
-  else
-    {
-      ip6_header_t *ip6_hdr;
-      ip6_hdr = vlib_buffer_get_current (b);
-      sctp_hdr = ip6_next_header (ip6_hdr);
-      trans_conn = session_lookup_connection_wt6 (fib_index,
-						  &ip6_hdr->dst_address,
-						  &ip6_hdr->src_address,
-						  sctp_hdr->dst_port,
-						  sctp_hdr->src_port,
-						  TRANSPORT_PROTO_SCTP,
-						  thread_index, &is_filtered);
-      if (trans_conn == 0)	/* Not primary connection */
-	{
-	  for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
-	    {
-	      if ((tm->connections[thread_index]->sub_conn[i].
-		   connection.lcl_ip.ip6.as_u64[0] ==
-		   ip6_hdr->dst_address.as_u64[0]
-		   && tm->connections[thread_index]->sub_conn[i].
-		   connection.lcl_ip.ip6.as_u64[1] ==
-		   ip6_hdr->dst_address.as_u64[1])
-		  && (tm->connections[thread_index]->sub_conn[i].
-		      connection.rmt_ip.ip6.as_u64[0] ==
-		      ip6_hdr->src_address.as_u64[0]
-		      && tm->connections[thread_index]->
-		      sub_conn[i].connection.rmt_ip.ip6.as_u64[1] ==
-		      ip6_hdr->src_address.as_u64[1]))
-		{
-		  trans_conn =
-		    &tm->connections[thread_index]->sub_conn[i].connection;
-		  break;
-		}
-	    }
-	}
-      ASSERT (trans_conn != 0);
-      ASSERT (sctp_lookup_is_valid (trans_conn, sctp_hdr));
-    }
-  sctp_conn = sctp_get_connection_from_transport (trans_conn);
-  return sctp_conn;
-}
-
-typedef struct
-{
-  sctp_header_t sctp_header;
-  sctp_connection_t sctp_connection;
-} sctp_rx_trace_t;
-
-#define sctp_next_output(is_ip4) (is_ip4 ? SCTP_NEXT_SCTP4_OUTPUT          \
-                                        : SCTP_NEXT_SCTP6_OUTPUT)
-
-#define sctp_next_drop(is_ip4) (is_ip4 ? SCTP_NEXT_DROP4                  \
-                                      : SCTP_NEXT_DROP6)
-
-static void
-sctp_set_rx_trace_data (sctp_rx_trace_t * rx_trace,
-			sctp_connection_t * sctp_conn,
-			sctp_header_t * sctp_hdr, vlib_buffer_t * b0,
-			u8 is_ip4)
-{
-  if (sctp_conn)
-    {
-      clib_memcpy_fast (&rx_trace->sctp_connection, sctp_conn,
-			sizeof (rx_trace->sctp_connection));
-    }
-  else
-    {
-      sctp_hdr = sctp_buffer_hdr (b0);
-    }
-  clib_memcpy_fast (&rx_trace->sctp_header, sctp_hdr,
-		    sizeof (rx_trace->sctp_header));
-}
-
-always_inline u16
-sctp_calculate_implied_length (ip4_header_t * ip4_hdr, ip6_header_t * ip6_hdr,
-			       int is_ip4)
-{
-  u16 sctp_implied_packet_length = 0;
-
-  if (is_ip4)
-    sctp_implied_packet_length =
-      clib_net_to_host_u16 (ip4_hdr->length) - ip4_header_bytes (ip4_hdr);
-  else
-    sctp_implied_packet_length =
-      clib_net_to_host_u16 (ip6_hdr->payload_length) - sizeof (ip6_hdr);
-
-  return sctp_implied_packet_length;
-}
-
-always_inline u8
-sctp_is_bundling (u16 sctp_implied_length,
-		  sctp_chunks_common_hdr_t * sctp_common_hdr)
-{
-  if (sctp_implied_length !=
-      sizeof (sctp_header_t) + vnet_sctp_get_chunk_length (sctp_common_hdr))
-    return 1;
-  return 0;
-}
-
-always_inline u16
-sctp_handle_operation_err (sctp_header_t * sctp_hdr,
-			   sctp_connection_t * sctp_conn, u8 idx,
-			   vlib_buffer_t * b, u16 * next0)
-{
-  sctp_operation_error_t *op_err = (sctp_operation_error_t *) sctp_hdr;
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hdr->verification_tag)
-    {
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  if (clib_net_to_host_u16 (op_err->err_causes[0].param_hdr.type) ==
-      STALE_COOKIE_ERROR)
-    {
-      if (sctp_conn->state != SCTP_STATE_COOKIE_ECHOED)
-	*next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      else
-	{
-	  sctp_connection_cleanup (sctp_conn);
-
-	  session_transport_closing_notify (&sctp_conn->
-					    sub_conn[idx].connection);
-	}
-    }
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_handle_init (sctp_header_t * sctp_hdr,
-		  sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-		  sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
-		  u16 sctp_implied_length)
-{
-  sctp_init_chunk_t *init_chunk = (sctp_init_chunk_t *) (sctp_hdr);
-  ip4_address_t ip4_addr;
-  ip6_address_t ip6_addr;
-  u8 add_ip4 = 0;
-  u8 add_ip6 = 0;
-  char hostname[FQDN_MAX_LENGTH];
-
-  /* Check the current state of the connection
-   *
-   * The logic required by the RFC4960 Section 5.2.2 is already taken care of
-   * in the code below and by the "sctp_prepare_initack_chunk" function.
-   * However, for debugging purposes it is nice to have a message printed out
-   * for these corner-case scenarios.
-   */
-  if (sctp_conn->state != SCTP_STATE_CLOSED)
-    {				/* UNEXPECTED scenario */
-      switch (sctp_conn->state)
-	{
-	case SCTP_STATE_COOKIE_WAIT:
-	  SCTP_ADV_DBG ("Received INIT chunk while in COOKIE_WAIT state");
-	  sctp_prepare_initack_chunk_for_collision (sctp_conn,
-						    SCTP_PRIMARY_PATH_IDX,
-						    b0, &ip4_addr, &ip6_addr);
-	  return SCTP_ERROR_NONE;
-	case SCTP_STATE_COOKIE_ECHOED:
-	case SCTP_STATE_SHUTDOWN_ACK_SENT:
-	  SCTP_ADV_DBG ("Received INIT chunk while in COOKIE_ECHOED state");
-	  if (sctp_conn->forming_association_changed == 0)
-	    sctp_prepare_initack_chunk_for_collision (sctp_conn,
-						      SCTP_PRIMARY_PATH_IDX,
-						      b0, &ip4_addr,
-						      &ip6_addr);
-	  else
-	    sctp_prepare_abort_for_collision (sctp_conn,
-					      SCTP_PRIMARY_PATH_IDX, b0,
-					      &ip4_addr, &ip6_addr);
-	  return SCTP_ERROR_NONE;
-	}
-    }
-
-  if (sctp_hdr->verification_tag != 0x0)
-    return SCTP_ERROR_INVALID_TAG_FOR_INIT;
-
-  /*
-   * It is not possible to bundle any other CHUNK with the INIT chunk
-   */
-  if (sctp_is_bundling (sctp_implied_length, &init_chunk->chunk_hdr))
-    return SCTP_ERROR_BUNDLING_VIOLATION;
-
-  /* Save the INITIATE_TAG of the remote peer for this connection:
-   * it MUST be used for the VERIFICATION_TAG parameter in the SCTP HEADER */
-  sctp_conn->remote_tag = init_chunk->initiate_tag;
-  sctp_conn->remote_initial_tsn =
-    clib_net_to_host_u32 (init_chunk->initial_tsn);
-  sctp_conn->last_rcvd_tsn = sctp_conn->remote_initial_tsn;
-  sctp_conn->next_tsn_expected = sctp_conn->remote_initial_tsn + 1;
-  SCTP_CONN_TRACKING_DBG ("sctp_conn->remote_initial_tsn = %u",
-			  sctp_conn->remote_initial_tsn);
-
-  sctp_conn->peer_rwnd = clib_net_to_host_u32 (init_chunk->a_rwnd);
-  /*
-   * If the length specified in the INIT message is bigger than the size in bytes of our structure it means that
-   * optional parameters have been sent with the INIT chunk and we need to parse them.
-   */
-  u16 length = vnet_sctp_get_chunk_length (sctp_chunk_hdr);
-  if (length > sizeof (sctp_init_chunk_t))
-    {
-      /* There are optional parameters in the INIT chunk */
-      u16 pointer_offset = sizeof (sctp_init_chunk_t);
-      while (pointer_offset < length)
-	{
-	  sctp_opt_params_hdr_t *opt_params_hdr =
-	    (sctp_opt_params_hdr_t *) init_chunk + pointer_offset;
-
-	  switch (clib_net_to_host_u16 (opt_params_hdr->type))
-	    {
-	    case SCTP_IPV4_ADDRESS_TYPE:
-	      {
-		sctp_ipv4_addr_param_t *ipv4 =
-		  (sctp_ipv4_addr_param_t *) opt_params_hdr;
-		clib_memcpy_fast (&ip4_addr, &ipv4->address,
-				  sizeof (ip4_address_t));
-
-		if (sctp_sub_connection_add_ip4 (vlib_get_main (),
-						 &sctp_conn->sub_conn
-						 [SCTP_PRIMARY_PATH_IDX].connection.
-						 lcl_ip.ip4,
-						 &ipv4->address) ==
-		    SCTP_ERROR_NONE)
-		  add_ip4 = 1;
-
-		break;
-	      }
-	    case SCTP_IPV6_ADDRESS_TYPE:
-	      {
-		sctp_ipv6_addr_param_t *ipv6 =
-		  (sctp_ipv6_addr_param_t *) opt_params_hdr;
-		clib_memcpy_fast (&ip6_addr, &ipv6->address,
-				  sizeof (ip6_address_t));
-
-		if (sctp_sub_connection_add_ip6 (vlib_get_main (),
-						 &sctp_conn->sub_conn
-						 [SCTP_PRIMARY_PATH_IDX].connection.
-						 lcl_ip.ip6,
-						 &ipv6->address) ==
-		    SCTP_ERROR_NONE)
-		  add_ip6 = 1;
-
-		break;
-	      }
-	    case SCTP_COOKIE_PRESERVATIVE_TYPE:
-	      {
-		sctp_cookie_preservative_param_t *cookie_pres =
-		  (sctp_cookie_preservative_param_t *) opt_params_hdr;
-		sctp_conn->peer_cookie_life_span_increment =
-		  cookie_pres->life_span_inc;
-		break;
-	      }
-	    case SCTP_HOSTNAME_ADDRESS_TYPE:
-	      {
-		sctp_hostname_param_t *hostname_addr =
-		  (sctp_hostname_param_t *) opt_params_hdr;
-		clib_memcpy_fast (hostname, hostname_addr->hostname,
-				  FQDN_MAX_LENGTH);
-		break;
-	      }
-	    case SCTP_SUPPORTED_ADDRESS_TYPES:
-	      {
-		/* TODO */
-		break;
-	      }
-	    }
-	  pointer_offset += clib_net_to_host_u16 (opt_params_hdr->length);
-	}
-    }
-
-  /* Reuse buffer to make init-ack and send */
-  sctp_prepare_initack_chunk (sctp_conn, SCTP_PRIMARY_PATH_IDX, b0, &ip4_addr,
-			      add_ip4, &ip6_addr, add_ip6);
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_is_valid_init_ack (sctp_header_t * sctp_hdr,
-			sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-			sctp_connection_t * sctp_conn, vlib_buffer_t * b0,
-			u16 sctp_implied_length)
-{
-  sctp_init_ack_chunk_t *init_ack_chunk =
-    (sctp_init_ack_chunk_t *) (sctp_hdr);
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != init_ack_chunk->sctp_hdr.verification_tag)
-    {
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  /*
-   * It is not possible to bundle any other CHUNK with the INIT_ACK chunk
-   */
-  if (sctp_is_bundling (sctp_implied_length, &init_ack_chunk->chunk_hdr))
-    return SCTP_ERROR_BUNDLING_VIOLATION;
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_handle_init_ack (sctp_header_t * sctp_hdr,
-		      sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-		      sctp_connection_t * sctp_conn, u8 idx,
-		      vlib_buffer_t * b0, u16 sctp_implied_length)
-{
-  sctp_init_ack_chunk_t *init_ack_chunk =
-    (sctp_init_ack_chunk_t *) (sctp_hdr);
-
-  char hostname[FQDN_MAX_LENGTH];
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != init_ack_chunk->sctp_hdr.verification_tag)
-    {
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  /*
-   * It is not possible to bundle any other CHUNK with the INIT chunk
-   */
-  if (sctp_is_bundling (sctp_implied_length, &init_ack_chunk->chunk_hdr))
-    return SCTP_ERROR_BUNDLING_VIOLATION;
-
-  /* Stop the T1_INIT timer */
-  sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T1_INIT);
-
-  sctp_calculate_rto (sctp_conn, idx);
-
-  /* remote_tag to be placed in the VERIFICATION_TAG field of the COOKIE_ECHO chunk */
-  sctp_conn->remote_tag = init_ack_chunk->initiate_tag;
-  sctp_conn->remote_initial_tsn =
-    clib_net_to_host_u32 (init_ack_chunk->initial_tsn);
-  sctp_conn->last_rcvd_tsn = sctp_conn->remote_initial_tsn;
-  sctp_conn->next_tsn_expected = sctp_conn->remote_initial_tsn + 1;
-  SCTP_CONN_TRACKING_DBG ("sctp_conn->remote_initial_tsn = %u",
-			  sctp_conn->remote_initial_tsn);
-  sctp_conn->peer_rwnd = clib_net_to_host_u32 (init_ack_chunk->a_rwnd);
-
-  u16 length = vnet_sctp_get_chunk_length (sctp_chunk_hdr);
-
-  if (length > sizeof (sctp_init_ack_chunk_t))
-    /*
-     * There are optional parameters in the INIT ACK chunk
-     */
-    {
-      u16 pointer_offset = sizeof (sctp_init_ack_chunk_t);
-
-      while (pointer_offset < length)
-	{
-	  sctp_opt_params_hdr_t *opt_params_hdr =
-	    (sctp_opt_params_hdr_t *) ((char *) init_ack_chunk +
-				       pointer_offset);
-
-	  switch (clib_net_to_host_u16 (opt_params_hdr->type))
-	    {
-	    case SCTP_IPV4_ADDRESS_TYPE:
-	      {
-		sctp_ipv4_addr_param_t *ipv4 =
-		  (sctp_ipv4_addr_param_t *) opt_params_hdr;
-
-		sctp_sub_connection_add_ip4 (vlib_get_main (),
-					     &sctp_conn->sub_conn
-					     [SCTP_PRIMARY_PATH_IDX].connection.
-					     lcl_ip.ip4, &ipv4->address);
-
-		break;
-	      }
-	    case SCTP_IPV6_ADDRESS_TYPE:
-	      {
-		sctp_ipv6_addr_param_t *ipv6 =
-		  (sctp_ipv6_addr_param_t *) opt_params_hdr;
-
-		sctp_sub_connection_add_ip6 (vlib_get_main (),
-					     &sctp_conn->sub_conn
-					     [SCTP_PRIMARY_PATH_IDX].connection.
-					     lcl_ip.ip6, &ipv6->address);
-
-		break;
-	      }
-	    case SCTP_STATE_COOKIE_TYPE:
-	      {
-		sctp_state_cookie_param_t *state_cookie_param =
-		  (sctp_state_cookie_param_t *) opt_params_hdr;
-
-		clib_memcpy_fast (&(sctp_conn->cookie_param),
-				  state_cookie_param,
-				  sizeof (sctp_state_cookie_param_t));
-
-		break;
-	      }
-	    case SCTP_HOSTNAME_ADDRESS_TYPE:
-	      {
-		sctp_hostname_param_t *hostname_addr =
-		  (sctp_hostname_param_t *) opt_params_hdr;
-		clib_memcpy_fast (hostname, hostname_addr->hostname,
-				  FQDN_MAX_LENGTH);
-		break;
-	      }
-	    case SCTP_UNRECOGNIZED_TYPE:
-	      {
-		break;
-	      }
-	    }
-	  u16 increment = clib_net_to_host_u16 (opt_params_hdr->length);
-	  /* This indicates something really bad happened */
-	  if (increment == 0)
-	    {
-	      return SCTP_ERROR_INVALID_TAG;
-	    }
-	  pointer_offset += increment;
-	}
-    }
-
-  sctp_prepare_cookie_echo_chunk (sctp_conn, idx, b0, 1);
-
-  /* Start the T1_COOKIE timer */
-  sctp_timer_set (sctp_conn, idx,
-		  SCTP_TIMER_T1_COOKIE, sctp_conn->sub_conn[idx].RTO);
-
-  return SCTP_ERROR_NONE;
-}
-
-/** Enqueue data out-of-order for delivery to application */
-always_inline int
-sctp_session_enqueue_data_ooo (sctp_connection_t * sctp_conn,
-			       vlib_buffer_t * b, u16 data_len, u8 conn_idx)
-{
-  int written, error = SCTP_ERROR_ENQUEUED;
-
-  written =
-    session_enqueue_stream_connection (&sctp_conn->
-				       sub_conn[conn_idx].connection, b, 0,
-				       1 /* queue event */ ,
-				       0);
-
-  /* Update next_tsn_expected */
-  if (PREDICT_TRUE (written == data_len))
-    {
-      sctp_conn->next_tsn_expected += written;
-
-      SCTP_ADV_DBG ("CONN = %u, WRITTEN [%u] == DATA_LEN [%d]",
-		    sctp_conn->sub_conn[conn_idx].connection.c_index,
-		    written, data_len);
-    }
-  /* If more data written than expected, account for out-of-order bytes. */
-  else if (written > data_len)
-    {
-      sctp_conn->next_tsn_expected += written;
-
-      SCTP_ADV_DBG ("CONN = %u, WRITTEN [%u] > DATA_LEN [%d]",
-		    sctp_conn->sub_conn[conn_idx].connection.c_index,
-		    written, data_len);
-    }
-  else if (written > 0)
-    {
-      /* We've written something but FIFO is probably full now */
-      sctp_conn->next_tsn_expected += written;
-
-      error = SCTP_ERROR_PARTIALLY_ENQUEUED;
-
-      SCTP_ADV_DBG
-	("CONN = %u, WRITTEN [%u] > 0 (SCTP_ERROR_PARTIALLY_ENQUEUED)",
-	 sctp_conn->sub_conn[conn_idx].connection.c_index, written);
-    }
-  else
-    {
-      SCTP_ADV_DBG ("CONN = %u, WRITTEN == 0 (SCTP_ERROR_FIFO_FULL)",
-		    sctp_conn->sub_conn[conn_idx].connection.c_index);
-
-      return SCTP_ERROR_FIFO_FULL;
-    }
-
-  /* TODO: Update out_of_order_map & SACK list */
-
-  return error;
-}
-
-/** Enqueue data for delivery to application */
-always_inline int
-sctp_session_enqueue_data (sctp_connection_t * sctp_conn, vlib_buffer_t * b,
-			   u16 data_len, u8 conn_idx)
-{
-  int written, error = SCTP_ERROR_ENQUEUED;
-
-  written =
-    session_enqueue_stream_connection (&sctp_conn->
-				       sub_conn[conn_idx].connection, b, 0,
-				       1 /* queue event */ ,
-				       1);
-
-  /* Update next_tsn_expected */
-  if (PREDICT_TRUE (written == data_len))
-    {
-      sctp_conn->next_tsn_expected += written;
-
-      SCTP_ADV_DBG ("CONN = %u, WRITTEN [%u] == DATA_LEN [%d]",
-		    sctp_conn->sub_conn[conn_idx].connection.c_index,
-		    written, data_len);
-    }
-  /* If more data written than expected, account for out-of-order bytes. */
-  else if (written > data_len)
-    {
-      sctp_conn->next_tsn_expected += written;
-
-      SCTP_ADV_DBG ("CONN = %u, WRITTEN [%u] > DATA_LEN [%d]",
-		    sctp_conn->sub_conn[conn_idx].connection.c_index,
-		    written, data_len);
-    }
-  else if (written > 0)
-    {
-      /* We've written something but FIFO is probably full now */
-      sctp_conn->next_tsn_expected += written;
-
-      error = SCTP_ERROR_PARTIALLY_ENQUEUED;
-
-      SCTP_ADV_DBG
-	("CONN = %u, WRITTEN [%u] > 0 (SCTP_ERROR_PARTIALLY_ENQUEUED)",
-	 sctp_conn->sub_conn[conn_idx].connection.c_index, written);
-    }
-  else
-    {
-      SCTP_ADV_DBG ("CONN = %u, WRITTEN == 0 (SCTP_ERROR_FIFO_FULL)",
-		    sctp_conn->sub_conn[conn_idx].connection.c_index);
-
-      return SCTP_ERROR_FIFO_FULL;
-    }
-
-  return error;
-}
-
-always_inline u8
-sctp_is_sack_delayable (sctp_connection_t * sctp_conn, u8 idx, u8 is_gapping)
-{
-  if (sctp_conn->conn_config.never_delay_sack)
-    {
-      SCTP_CONN_TRACKING_DBG ("sctp_conn->conn_config.never_delay_sack = ON");
-      return 0;
-    }
-
-  /* Section 4.4 of the RFC4960 */
-  if (sctp_conn->state == SCTP_STATE_SHUTDOWN_SENT)
-    {
-      SCTP_CONN_TRACKING_DBG ("sctp_conn->state = %s; SACK not delayable",
-			      sctp_state_to_string (sctp_conn->state));
-      return 0;
-    }
-
-  if (is_gapping)
-    {
-      SCTP_CONN_TRACKING_DBG
-	("gapping != 0: CONN_INDEX = %u, sctp_conn->ack_state = %u",
-	 sctp_conn->sub_conn[idx].connection.c_index, sctp_conn->ack_state);
-      return 0;
-    }
-
-  sctp_conn->ack_state += 1;
-  if (sctp_conn->ack_state >= MAX_ENQUEABLE_SACKS)
-    {
-      SCTP_CONN_TRACKING_DBG
-	("sctp_conn->ack_state >= MAX_ENQUEABLE_SACKS: CONN_INDEX = %u, sctp_conn->ack_state = %u",
-	 sctp_conn->sub_conn[idx].connection.c_index, sctp_conn->ack_state);
-      return 0;
-    }
-
-  return 1;
-}
-
-always_inline void
-sctp_is_connection_gapping (sctp_connection_t * sctp_conn, u32 tsn,
-			    u8 * gapping)
-{
-  if (sctp_conn->next_tsn_expected != tsn)	// It means data transmission is GAPPING
-    {
-      SCTP_CONN_TRACKING_DBG
-	("GAPPING: CONN_INDEX = %u, sctp_conn->next_tsn_expected = %u, tsn = %u, diff = %u",
-	 sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.c_index,
-	 sctp_conn->next_tsn_expected, tsn,
-	 sctp_conn->next_tsn_expected - tsn);
-
-      *gapping = 1;
-    }
-}
-
-always_inline u16
-sctp_handle_data (sctp_payload_data_chunk_t * sctp_data_chunk,
-		  sctp_connection_t * sctp_conn, u8 idx, vlib_buffer_t * b,
-		  u16 * next0)
-{
-  u32 error = 0, n_data_bytes;
-  u8 is_gapping = 0;
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_data_chunk->sctp_hdr.verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      sctp_conn->sub_conn[idx].enqueue_state = SCTP_ERROR_INVALID_TAG;
-      return sctp_conn->sub_conn[idx].enqueue_state;
-    }
-
-  vnet_buffer (b)->sctp.sid = sctp_data_chunk->stream_id;
-  vnet_buffer (b)->sctp.ssn = sctp_data_chunk->stream_seq;
-
-  u32 tsn = clib_net_to_host_u32 (sctp_data_chunk->tsn);
-
-  vlib_buffer_advance (b, vnet_buffer (b)->sctp.data_offset);
-  u32 chunk_len = vnet_sctp_get_chunk_length (&sctp_data_chunk->chunk_hdr) -
-    (sizeof (sctp_payload_data_chunk_t) - sizeof (sctp_header_t));
-
-  ASSERT (vnet_buffer (b)->sctp.data_len);
-  ASSERT (chunk_len);
-
-  /* Padding was added: see RFC 4096 section 3.3.1 */
-  if (vnet_buffer (b)->sctp.data_len > chunk_len)
-    {
-      /* Let's change the data_len to the right amount calculated here now.
-       * We cannot do that in the generic sctp46_input_dispatcher node since
-       * that is common to all CHUNKS handling.
-       */
-      vnet_buffer (b)->sctp.data_len = chunk_len;
-      /* We need to change b->current_length so that downstream calls to
-       * session_enqueue_stream_connection (called by sctp_session_enqueue_data)
-       * push the correct amount of data to be enqueued.
-       */
-      b->current_length = chunk_len;
-    }
-  n_data_bytes = vnet_buffer (b)->sctp.data_len;
-
-  sctp_is_connection_gapping (sctp_conn, tsn, &is_gapping);
-
-  sctp_conn->last_rcvd_tsn = tsn;
-
-  SCTP_ADV_DBG ("POINTER_WITH_DATA = %p", b->data);
-
-  u8 bbit = vnet_sctp_get_bbit (&sctp_data_chunk->chunk_hdr);
-  u8 ebit = vnet_sctp_get_ebit (&sctp_data_chunk->chunk_hdr);
-
-  if (bbit == 1 && ebit == 1)	/* Unfragmented message */
-    {
-      /* In order data, enqueue. Fifo figures out by itself if any out-of-order
-       * segments can be enqueued after fifo tail offset changes. */
-      if (PREDICT_FALSE (is_gapping == 1))
-	error =
-	  sctp_session_enqueue_data_ooo (sctp_conn, b, n_data_bytes, idx);
-      else
-	error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
-    }
-  else if (bbit == 1 && ebit == 0)	/* First piece of a fragmented user message */
-    {
-      error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
-    }
-  else if (bbit == 0 && ebit == 1)	/* Last piece of a fragmented user message */
-    {
-      if (PREDICT_FALSE (is_gapping == 1))
-	error =
-	  sctp_session_enqueue_data_ooo (sctp_conn, b, n_data_bytes, idx);
-      else
-	error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
-    }
-  else				/* Middle piece of a fragmented user message */
-    {
-      if (PREDICT_FALSE (is_gapping == 1))
-	error =
-	  sctp_session_enqueue_data_ooo (sctp_conn, b, n_data_bytes, idx);
-      else
-	error = sctp_session_enqueue_data (sctp_conn, b, n_data_bytes, idx);
-    }
-  sctp_conn->last_rcvd_tsn = tsn;
-
-  SCTP_ADV_DBG ("POINTER_WITH_DATA = %p", b->data);
-
-  if (!sctp_is_sack_delayable (sctp_conn, idx, is_gapping))
-    {
-      *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
-      sctp_prepare_sack_chunk (sctp_conn, idx, b);
-    }
-  else
-    *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  sctp_conn->sub_conn[idx].enqueue_state = error;
-
-  return error;
-}
-
-always_inline u16
-sctp_handle_cookie_echo (sctp_header_t * sctp_hdr,
-			 sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-			 sctp_connection_t * sctp_conn, u8 idx,
-			 vlib_buffer_t * b0, u16 * next0)
-{
-  u64 now = sctp_time_now ();
-
-  sctp_cookie_echo_chunk_t *cookie_echo =
-    (sctp_cookie_echo_chunk_t *) sctp_hdr;
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hdr->verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  sctp_calculate_rto (sctp_conn, idx);
-
-  u64 creation_time =
-    clib_net_to_host_u64 (cookie_echo->cookie.creation_time);
-  u64 cookie_lifespan =
-    clib_net_to_host_u32 (cookie_echo->cookie.cookie_lifespan);
-
-  if (now > creation_time + cookie_lifespan)
-    {
-      SCTP_DBG ("now (%u) > creation_time (%u) + cookie_lifespan (%u)",
-		now, creation_time, cookie_lifespan);
-      return SCTP_ERROR_COOKIE_ECHO_VIOLATION;
-    }
-
-  sctp_prepare_cookie_ack_chunk (sctp_conn, idx, b0);
-
-  /* Change state */
-  sctp_conn->state = SCTP_STATE_ESTABLISHED;
-  sctp_conn->sub_conn[idx].state = SCTP_SUBCONN_STATE_UP;
-  *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
-		  sctp_conn->sub_conn[idx].RTO);
-
-  session_stream_accept_notify (&sctp_conn->sub_conn[idx].connection);
-
-  return SCTP_ERROR_NONE;
-
-}
-
-always_inline u16
-sctp_handle_cookie_ack (sctp_header_t * sctp_hdr,
-			sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-			sctp_connection_t * sctp_conn, u8 idx,
-			vlib_buffer_t * b0, u16 * next0)
-{
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hdr->verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  sctp_calculate_rto (sctp_conn, idx);
-
-  sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T1_COOKIE);
-  /* Change state */
-  sctp_conn->state = SCTP_STATE_ESTABLISHED;
-  sctp_conn->sub_conn[idx].state = SCTP_SUBCONN_STATE_UP;
-
-  *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  sctp_timer_set (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
-		  sctp_conn->sub_conn[idx].RTO);
-
-  session_stream_accept_notify (&sctp_conn->sub_conn[idx].connection);
-
-  return SCTP_ERROR_NONE;
-
-}
-
-always_inline uword
-sctp46_rcv_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
-			 vlib_frame_t * from_frame, int is_ip4)
-{
-  sctp_main_t *tm = vnet_get_sctp_main ();
-
-  u32 n_left_from, next_index, *from, *to_next;
-  u32 my_thread_index = vm->thread_index;
-
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-
-  next_index = node->cached_next_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);
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-	  sctp_header_t *sctp_hdr = 0;
-	  sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
-	  ip4_header_t *ip4_hdr = 0;
-	  ip6_header_t *ip6_hdr = 0;
-	  sctp_connection_t *sctp_conn, *new_sctp_conn;
-	  u16 sctp_implied_length = 0;
-	  u16 error0 = SCTP_ERROR_NONE, next0 = sctp_next_drop (is_ip4);
-	  u8 idx;
-
-	  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);
-
-	  /* If we are in SCTP_COOKIE_WAIT_STATE then the connection
-	   * will come from the half-open connections pool.
-	   */
-	  sctp_conn =
-	    sctp_half_open_connection_get (vnet_buffer (b0)->
-					   sctp.connection_index);
-
-	  if (PREDICT_FALSE (sctp_conn == 0))
-	    {
-	      SCTP_ADV_DBG
-		("sctp_conn == NULL; return SCTP_ERROR_INVALID_CONNECTION");
-	      error0 = SCTP_ERROR_INVALID_CONNECTION;
-	      goto drop;
-	    }
-	  if (is_ip4)
-	    {
-	      ip4_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip4_next_header (ip4_hdr);
-	      idx = sctp_sub_conn_id_via_ip4h (sctp_conn, ip4_hdr);
-	    }
-	  else
-	    {
-	      ip6_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip6_next_header (ip6_hdr);
-	      idx = sctp_sub_conn_id_via_ip6h (sctp_conn, ip6_hdr);
-	    }
-
-	  sctp_conn->sub_conn[idx].subconn_idx = idx;
-	  sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-
-	  sctp_chunk_hdr =
-	    (sctp_chunks_common_hdr_t *) (&full_hdr->common_hdr);
-
-	  sctp_implied_length =
-	    sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
-
-	  u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr);
-
-	  switch (chunk_type)
-	    {
-	    case INIT_ACK:
-	      error0 =
-		sctp_is_valid_init_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
-					b0, sctp_implied_length);
-
-	      if (error0 == SCTP_ERROR_NONE)
-		{
-		  pool_get (tm->connections[my_thread_index], new_sctp_conn);
-		  clib_memcpy_fast (new_sctp_conn, sctp_conn,
-				    sizeof (*new_sctp_conn));
-		  new_sctp_conn->sub_conn[idx].c_c_index =
-		    new_sctp_conn - tm->connections[my_thread_index];
-		  new_sctp_conn->sub_conn[idx].c_thread_index =
-		    my_thread_index;
-		  new_sctp_conn->sub_conn[idx].PMTU =
-		    sctp_conn->sub_conn[idx].PMTU;
-		  new_sctp_conn->sub_conn[idx].subconn_idx = idx;
-
-		  if (sctp_half_open_connection_cleanup (sctp_conn))
-		    {
-		      SCTP_DBG
-			("Cannot cleanup half-open connection; not the owning thread");
-		    }
-
-		  sctp_connection_timers_init (new_sctp_conn);
-
-		  sctp_init_cwnd (new_sctp_conn);
-
-		  error0 =
-		    sctp_handle_init_ack (sctp_hdr, sctp_chunk_hdr,
-					  new_sctp_conn, idx, b0,
-					  sctp_implied_length);
-
-		  if (session_stream_connect_notify
-		      (&new_sctp_conn->sub_conn[idx].connection, 0))
-		    {
-		      SCTP_DBG
-			("conn_index = %u: session_stream_connect_notify error; cleaning up connection",
-			 new_sctp_conn->sub_conn[idx].connection.c_index);
-		      sctp_connection_cleanup (new_sctp_conn);
-		      goto drop;
-		    }
-		  next0 = sctp_next_output (is_ip4);
-		}
-	      break;
-
-	    case OPERATION_ERROR:
-	      error0 =
-		sctp_handle_operation_err (sctp_hdr, sctp_conn, idx, b0,
-					   &next0);
-	      break;
-
-	      /* All UNEXPECTED scenarios (wrong chunk received per state-machine)
-	       * are handled by the input-dispatcher function using the table-lookup
-	       * hence we should never get to the "default" case below.
-	       */
-	    default:
-	      error0 = SCTP_ERROR_UNKNOWN_CHUNK;
-	      next0 = sctp_next_drop (is_ip4);
-	      goto drop;
-	    }
-
-	  if (error0 != SCTP_ERROR_NONE)
-	    {
-	      clib_warning ("error while parsing chunk");
-	      sctp_connection_cleanup (sctp_conn);
-	      next0 = sctp_next_drop (is_ip4);
-	      goto drop;
-	    }
-
-	drop:
-	  b0->error = node->errors[error0];
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sctp_rx_trace_t *t0 =
-		vlib_add_trace (vm, node, b0, sizeof (*t0));
-	      sctp_set_rx_trace_data (t0, sctp_conn, sctp_hdr, b0, is_ip4);
-	    }
-
-	  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;
-}
-
-VLIB_NODE_FN (sctp4_rcv_phase_node) (vlib_main_t * vm,
-				     vlib_node_runtime_t * node,
-				     vlib_frame_t * from_frame)
-{
-  return sctp46_rcv_phase_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_init_phase_node) (vlib_main_t * vm,
-				      vlib_node_runtime_t * node,
-				      vlib_frame_t * from_frame)
-{
-  return sctp46_rcv_phase_inline (vm, node, from_frame, 0 /* is_ip4 */ );
-}
-
-static u8 *
-format_sctp_rx_trace_short (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 *);
-  sctp_rx_trace_t *t = va_arg (*args, sctp_rx_trace_t *);
-
-  s = format (s, "%d -> %d (%U)",
-	      clib_net_to_host_u16 (t->sctp_header.src_port),
-	      clib_net_to_host_u16 (t->sctp_header.dst_port),
-	      format_sctp_state, t->sctp_connection.state);
-
-  return s;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_rcv_phase_node) =
-{
-  .name = "sctp4-rcv",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_RCV_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_RCV_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_init_phase_node) =
-{
-  .name = "sctp6-rcv",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_RCV_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_RCV_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-always_inline u16
-sctp_handle_shutdown (sctp_header_t * sctp_hdr,
-		      sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-		      sctp_connection_t * sctp_conn, u8 idx,
-		      vlib_buffer_t * b0, u16 sctp_implied_length,
-		      u16 * next0)
-{
-  sctp_shutdown_association_chunk_t *shutdown_chunk =
-    (sctp_shutdown_association_chunk_t *) (sctp_hdr);
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hdr->verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  /*
-   * It is not possible to bundle any other CHUNK with the SHUTDOWN chunk
-   */
-  if (sctp_is_bundling (sctp_implied_length, &shutdown_chunk->chunk_hdr))
-    return SCTP_ERROR_BUNDLING_VIOLATION;
-
-  switch (sctp_conn->state)
-    {
-    case SCTP_STATE_ESTABLISHED:
-      if (sctp_check_outstanding_data_chunks (sctp_conn) == 0)
-	sctp_conn->state = SCTP_STATE_SHUTDOWN_RECEIVED;
-      sctp_send_shutdown_ack (sctp_conn, idx, b0);
-      break;
-
-    case SCTP_STATE_SHUTDOWN_SENT:
-      sctp_send_shutdown_ack (sctp_conn, idx, b0);
-      break;
-    }
-
-  *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_handle_shutdown_ack (sctp_header_t * sctp_hdr,
-			  sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-			  sctp_connection_t * sctp_conn, u8 idx,
-			  vlib_buffer_t * b0, u16 sctp_implied_length,
-			  u16 * next0)
-{
-  sctp_shutdown_ack_chunk_t *shutdown_ack_chunk =
-    (sctp_shutdown_ack_chunk_t *) (sctp_hdr);
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hdr->verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  /*
-   * It is not possible to bundle any other CHUNK with the SHUTDOWN chunk
-   */
-  if (sctp_is_bundling (sctp_implied_length, &shutdown_ack_chunk->chunk_hdr))
-    return SCTP_ERROR_BUNDLING_VIOLATION;
-
-  /* Whether we are in SCTP_STATE_SHUTDOWN_SENT or SCTP_STATE_SHUTDOWN_ACK_SENT
-   * the reception of a SHUTDOWN_ACK chunk leads to the same actions:
-   * - STOP T2_SHUTDOWN timer
-   * - SEND SHUTDOWN_COMPLETE chunk
-   */
-  sctp_timer_reset (sctp_conn, SCTP_PRIMARY_PATH_IDX, SCTP_TIMER_T2_SHUTDOWN);
-
-  sctp_send_shutdown_complete (sctp_conn, idx, b0);
-
-  *next0 = sctp_next_output (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_handle_shutdown_complete (sctp_header_t * sctp_hdr,
-			       sctp_chunks_common_hdr_t * sctp_chunk_hdr,
-			       sctp_connection_t * sctp_conn, u8 idx,
-			       vlib_buffer_t * b0, u16 sctp_implied_length,
-			       u16 * next0)
-{
-  sctp_shutdown_complete_chunk_t *shutdown_complete =
-    (sctp_shutdown_complete_chunk_t *) (sctp_hdr);
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hdr->verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  /*
-   * It is not possible to bundle any other CHUNK with the SHUTDOWN chunk
-   */
-  if (sctp_is_bundling (sctp_implied_length, &shutdown_complete->chunk_hdr))
-    return SCTP_ERROR_BUNDLING_VIOLATION;
-
-  sctp_timer_reset (sctp_conn, idx, SCTP_TIMER_T2_SHUTDOWN);
-
-  session_transport_closing_notify (&sctp_conn->sub_conn[idx].connection);
-
-  sctp_conn->state = SCTP_STATE_CLOSED;
-
-  *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline uword
-sctp46_shutdown_phase_inline (vlib_main_t * vm,
-			      vlib_node_runtime_t * node,
-			      vlib_frame_t * from_frame, int is_ip4)
-{
-  u32 n_left_from, next_index, *from, *to_next;
-  u32 my_thread_index = vm->thread_index;
-
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-
-  next_index = node->cached_next_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);
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-	  sctp_rx_trace_t *sctp_trace;
-	  sctp_header_t *sctp_hdr = 0;
-	  sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
-	  ip4_header_t *ip4_hdr = 0;
-	  ip6_header_t *ip6_hdr = 0;
-	  sctp_connection_t *sctp_conn;
-	  u16 sctp_implied_length = 0;
-	  u16 error0 = SCTP_ERROR_NONE, next0 = SCTP_RCV_PHASE_N_NEXT;
-	  u8 idx = 0;
-
-	  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);
-	  sctp_conn =
-	    sctp_connection_get (vnet_buffer (b0)->sctp.connection_index,
-				 my_thread_index);
-
-	  if (PREDICT_FALSE (sctp_conn == 0))
-	    {
-	      SCTP_DBG
-		("sctp_conn == NULL; return SCTP_ERROR_INVALID_CONNECTION");
-	      error0 = SCTP_ERROR_INVALID_CONNECTION;
-	      goto drop;
-	    }
-
-	  if (is_ip4)
-	    {
-	      ip4_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip4_next_header (ip4_hdr);
-	      idx = sctp_sub_conn_id_via_ip4h (sctp_conn, ip4_hdr);
-	    }
-	  else
-	    {
-	      ip6_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip6_next_header (ip6_hdr);
-	      idx = sctp_sub_conn_id_via_ip6h (sctp_conn, ip6_hdr);
-	    }
-
-	  sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-	  sctp_chunk_hdr = &full_hdr->common_hdr;
-
-	  sctp_implied_length =
-	    sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
-
-	  u8 chunk_type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
-	  switch (chunk_type)
-	    {
-	    case SHUTDOWN:
-	      error0 =
-		sctp_handle_shutdown (sctp_hdr, sctp_chunk_hdr, sctp_conn,
-				      idx, b0, sctp_implied_length, &next0);
-	      break;
-
-	    case SHUTDOWN_ACK:
-	      error0 =
-		sctp_handle_shutdown_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
-					  idx, b0, sctp_implied_length,
-					  &next0);
-	      break;
-
-	    case SHUTDOWN_COMPLETE:
-	      error0 =
-		sctp_handle_shutdown_complete (sctp_hdr, sctp_chunk_hdr,
-					       sctp_conn, idx, b0,
-					       sctp_implied_length, &next0);
-
-	      sctp_connection_cleanup (sctp_conn);
-	      break;
-
-	      /*
-	       * DATA chunks can still be transmitted/received in the SHUTDOWN-PENDING
-	       * and SHUTDOWN-SENT states (as per RFC4960 Section 6)
-	       */
-	    case DATA:
-	      error0 =
-		sctp_handle_data ((sctp_payload_data_chunk_t *) sctp_hdr,
-				  sctp_conn, idx, b0, &next0);
-	      break;
-
-	    case OPERATION_ERROR:
-	      error0 =
-		sctp_handle_operation_err (sctp_hdr, sctp_conn, idx, b0,
-					   &next0);
-	      break;
-
-	    case COOKIE_ECHO:	/* Cookie Received While Shutting Down */
-	      sctp_prepare_operation_error (sctp_conn, idx, b0,
-					    COOKIE_RECEIVED_WHILE_SHUTTING_DOWN);
-	      error0 = SCTP_ERROR_NONE;
-	      next0 = sctp_next_output (is_ip4);
-	      break;
-	      /* All UNEXPECTED scenarios (wrong chunk received per state-machine)
-	       * are handled by the input-dispatcher function using the table-lookup
-	       * hence we should never get to the "default" case below.
-	       */
-	    default:
-	      error0 = SCTP_ERROR_UNKNOWN_CHUNK;
-	      next0 = sctp_next_drop (is_ip4);
-	      goto drop;
-	    }
-
-	  if (error0 != SCTP_ERROR_NONE)
-	    {
-	      clib_warning ("error while parsing chunk");
-	      sctp_connection_cleanup (sctp_conn);
-	      next0 = sctp_next_drop (is_ip4);
-	      goto drop;
-	    }
-
-	drop:
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sctp_trace =
-		vlib_add_trace (vm, node, b0, sizeof (*sctp_trace));
-
-	      if (sctp_hdr != NULL)
-		clib_memcpy_fast (&sctp_trace->sctp_header, sctp_hdr,
-				  sizeof (sctp_trace->sctp_header));
-
-	      if (sctp_conn != NULL)
-		clib_memcpy_fast (&sctp_trace->sctp_connection, sctp_conn,
-				  sizeof (sctp_trace->sctp_connection));
-	    }
-
-	  b0->error = node->errors[error0];
-
-	  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;
-
-}
-
-VLIB_NODE_FN (sctp4_shutdown_phase_node) (vlib_main_t * vm,
-					  vlib_node_runtime_t * node,
-					  vlib_frame_t * from_frame)
-{
-  return sctp46_shutdown_phase_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_shutdown_phase_node) (vlib_main_t * vm,
-					  vlib_node_runtime_t * node,
-					  vlib_frame_t * from_frame)
-{
-  return sctp46_shutdown_phase_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_shutdown_phase_node) =
-{
-  .name = "sctp4-shutdown",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_SHUTDOWN_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_SHUTDOWN_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_shutdown_phase_node) =
-{
-  .name = "sctp6-shutdown",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_SHUTDOWN_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_SHUTDOWN_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-always_inline u16
-sctp_handle_sack (sctp_selective_ack_chunk_t * sack_chunk,
-		  sctp_connection_t * sctp_conn, u8 idx, vlib_buffer_t * b0,
-		  u16 * next0)
-{
-
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sack_chunk->sctp_hdr.verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  sctp_conn->sub_conn[idx].state = SCTP_SUBCONN_SACK_RECEIVED;
-
-  sctp_conn->sub_conn[idx].last_seen = sctp_time_now ();
-
-  /* Section 7.2.2; point (2) */
-  if (sctp_conn->sub_conn[idx].cwnd > sctp_conn->sub_conn[idx].ssthresh)
-    sctp_conn->sub_conn[idx].partially_acked_bytes =
-      sctp_conn->next_tsn - sack_chunk->cumulative_tsn_ack;
-
-  /* Section 7.2.2; point (5) */
-  if (sctp_conn->next_tsn - sack_chunk->cumulative_tsn_ack == 0)
-    sctp_conn->sub_conn[idx].partially_acked_bytes = 0;
-
-  sctp_conn->last_unacked_tsn = sack_chunk->cumulative_tsn_ack;
-
-  sctp_calculate_rto (sctp_conn, idx);
-
-  sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T3_RXTX,
-		     sctp_conn->sub_conn[idx].RTO);
-
-  sctp_conn->sub_conn[idx].RTO_pending = 0;
-
-  *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_handle_heartbeat (sctp_hb_req_chunk_t * sctp_hb_chunk,
-		       sctp_connection_t * sctp_conn, u8 idx,
-		       vlib_buffer_t * b0, u16 * next0)
-{
-  /* Check that the LOCALLY generated tag is being used by the REMOTE peer as the verification tag */
-  if (sctp_conn->local_tag != sctp_hb_chunk->sctp_hdr.verification_tag)
-    {
-      *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-      return SCTP_ERROR_INVALID_TAG;
-    }
-
-  sctp_prepare_heartbeat_ack_chunk (sctp_conn, idx, b0);
-
-  *next0 = sctp_next_output (sctp_conn->sub_conn[idx].connection.is_ip4);
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline u16
-sctp_handle_heartbeat_ack (sctp_hb_ack_chunk_t * sctp_hb_ack_chunk,
-			   sctp_connection_t * sctp_conn, u8 idx,
-			   vlib_buffer_t * b0, u16 * next0)
-{
-  sctp_conn->sub_conn[idx].last_seen = sctp_time_now ();
-
-  sctp_conn->sub_conn[idx].unacknowledged_hb -= 1;
-
-  sctp_timer_update (sctp_conn, idx, SCTP_TIMER_T4_HEARTBEAT,
-		     sctp_conn->sub_conn[idx].RTO);
-
-  *next0 = sctp_next_drop (sctp_conn->sub_conn[idx].c_is_ip4);
-
-  return SCTP_ERROR_NONE;
-}
-
-always_inline void
-sctp_node_inc_counter (vlib_main_t * vm, u32 sctp4_node, u32 sctp6_node,
-		       u8 is_ip4, u8 evt, u8 val)
-{
-  if (PREDICT_TRUE (!val))
-    return;
-
-  if (is_ip4)
-    vlib_node_increment_counter (vm, sctp4_node, evt, val);
-  else
-    vlib_node_increment_counter (vm, sctp6_node, evt, val);
-}
-
-always_inline uword
-sctp46_listen_process_inline (vlib_main_t * vm,
-			      vlib_node_runtime_t * node,
-			      vlib_frame_t * from_frame, int is_ip4)
-{
-  u32 n_left_from, next_index, *from, *to_next;
-  u32 my_thread_index = vm->thread_index;
-
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-
-  next_index = node->cached_next_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);
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-	  sctp_header_t *sctp_hdr = 0;
-	  ip4_header_t *ip4_hdr;
-	  ip6_header_t *ip6_hdr;
-	  sctp_connection_t *child_conn;
-	  sctp_connection_t *sctp_listener;
-	  u16 next0 = sctp_next_drop (is_ip4), error0 = SCTP_ERROR_ENQUEUED;
-
-	  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);
-	  sctp_listener =
-	    sctp_listener_get (vnet_buffer (b0)->sctp.connection_index);
-
-	  if (is_ip4)
-	    {
-	      ip4_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip4_next_header (ip4_hdr);
-	    }
-	  else
-	    {
-	      ip6_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip6_next_header (ip6_hdr);
-	    }
-
-	  child_conn =
-	    sctp_lookup_connection (sctp_listener->sub_conn
-				    [SCTP_PRIMARY_PATH_IDX].c_fib_index, b0,
-				    my_thread_index, is_ip4);
-
-	  if (PREDICT_FALSE (child_conn->state != SCTP_STATE_CLOSED))
-	    {
-	      SCTP_DBG
-		("conn_index = %u: child_conn->state != SCTP_STATE_CLOSED.... STATE=%s",
-		 child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
-		 connection.c_index,
-		 sctp_state_to_string (child_conn->state));
-	      error0 = SCTP_ERROR_CREATE_EXISTS;
-	      goto drop;
-	    }
-
-	  /* Create child session and send SYN-ACK */
-	  child_conn = sctp_connection_new (my_thread_index);
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].subconn_idx =
-	    SCTP_PRIMARY_PATH_IDX;
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_lcl_port =
-	    sctp_hdr->dst_port;
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_port =
-	    sctp_hdr->src_port;
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_is_ip4 = is_ip4;
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.proto =
-	    sctp_listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.proto;
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU =
-	    sctp_listener->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU;
-	  child_conn->state = SCTP_STATE_CLOSED;
-	  child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.fib_index =
-	    sctp_listener->sub_conn[SCTP_PRIMARY_PATH_IDX].
-	    connection.fib_index;
-
-	  if (is_ip4)
-	    {
-	      child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_lcl_ip4.as_u32 =
-		ip4_hdr->dst_address.as_u32;
-	      child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_ip4.as_u32 =
-		ip4_hdr->src_address.as_u32;
-	    }
-	  else
-	    {
-	      clib_memcpy_fast (&child_conn->
-				sub_conn[SCTP_PRIMARY_PATH_IDX].c_lcl_ip6,
-				&ip6_hdr->dst_address,
-				sizeof (ip6_address_t));
-	      clib_memcpy_fast (&child_conn->
-				sub_conn[SCTP_PRIMARY_PATH_IDX].c_rmt_ip6,
-				&ip6_hdr->src_address,
-				sizeof (ip6_address_t));
-	    }
-
-	  sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-	  sctp_chunks_common_hdr_t *sctp_chunk_hdr = &full_hdr->common_hdr;
-
-	  u8 chunk_type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
-	  if (chunk_type != INIT && chunk_type != DATA
-	      && chunk_type != OPERATION_ERROR)
-	    {
-	      SCTP_DBG
-		("conn_index = %u: chunk_type != INIT... chunk_type=%s",
-		 child_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
-		 connection.c_index, sctp_chunk_to_string (chunk_type));
-
-	      error0 = SCTP_ERROR_UNKNOWN_CHUNK;
-	      next0 = sctp_next_drop (is_ip4);
-	      goto drop;
-	    }
-
-	  u16 sctp_implied_length =
-	    sctp_calculate_implied_length (ip4_hdr, ip6_hdr, is_ip4);
-
-	  switch (chunk_type)
-	    {
-	    case INIT:
-	      sctp_connection_timers_init (child_conn);
-
-	      sctp_init_snd_vars (child_conn);
-
-	      sctp_init_cwnd (child_conn);
-
-	      error0 =
-		sctp_handle_init (sctp_hdr, sctp_chunk_hdr, child_conn, b0,
-				  sctp_implied_length);
-
-	      if (error0 == SCTP_ERROR_NONE)
-		{
-		  if (session_stream_accept
-		      (&child_conn->
-		       sub_conn[SCTP_PRIMARY_PATH_IDX].connection,
-		       sctp_listener->
-		       sub_conn[SCTP_PRIMARY_PATH_IDX].c_s_index,
-		       sctp_listener->
-		       sub_conn[SCTP_PRIMARY_PATH_IDX].c_thread_index, 0))
-		    {
-		      clib_warning ("session accept fail");
-		      sctp_connection_cleanup (child_conn);
-		      error0 = SCTP_ERROR_CREATE_SESSION_FAIL;
-		      goto drop;
-		    }
-		  next0 = sctp_next_output (is_ip4);
-		}
-	      break;
-
-	      /* Reception of a DATA chunk whilst in the CLOSED state is called
-	       * "Out of the Blue" packet and handling of the chunk needs special treatment
-	       * as per RFC4960 section 8.4
-	       */
-	    case DATA:
-	      break;
-
-	    case OPERATION_ERROR:
-	      error0 =
-		sctp_handle_operation_err (sctp_hdr, child_conn,
-					   SCTP_PRIMARY_PATH_IDX, b0, &next0);
-	      break;
-	    }
-
-	drop:
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sctp_rx_trace_t *t0 =
-		vlib_add_trace (vm, node, b0, sizeof (*t0));
-	      clib_memcpy_fast (&t0->sctp_header, sctp_hdr,
-				sizeof (t0->sctp_header));
-	      clib_memcpy_fast (&t0->sctp_connection, sctp_listener,
-				sizeof (t0->sctp_connection));
-	    }
-
-	  b0->error = node->errors[error0];
-
-	  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;
-}
-
-VLIB_NODE_FN (sctp4_listen_phase_node) (vlib_main_t * vm,
-					vlib_node_runtime_t * node,
-					vlib_frame_t * from_frame)
-{
-  return sctp46_listen_process_inline (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_listen_phase_node) (vlib_main_t * vm,
-					vlib_node_runtime_t * node,
-					vlib_frame_t * from_frame)
-{
-  return sctp46_listen_process_inline (vm, node, from_frame, 0 /* is_ip4 */ );
-}
-
-always_inline uword
-sctp46_established_phase_inline (vlib_main_t * vm, vlib_node_runtime_t * node,
-				 vlib_frame_t * from_frame, int is_ip4)
-{
-  sctp_main_t *sm = vnet_get_sctp_main ();
-  u32 n_left_from, next_index, *from, *to_next;
-  u32 my_thread_index = vm->thread_index, errors = 0;
-
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-
-  next_index = node->cached_next_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);
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  u32 bi0;
-	  vlib_buffer_t *b0;
-	  sctp_header_t *sctp_hdr = 0;
-	  sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
-	  ip4_header_t *ip4_hdr = 0;
-	  ip6_header_t *ip6_hdr = 0;
-	  sctp_connection_t *sctp_conn;
-	  u16 error0 = SCTP_ERROR_ENQUEUED, next0 =
-	    SCTP_ESTABLISHED_PHASE_N_NEXT;
-	  u8 idx;
-
-	  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);
-	  sctp_conn =
-	    sctp_connection_get (vnet_buffer (b0)->sctp.connection_index,
-				 my_thread_index);
-
-	  if (PREDICT_FALSE (sctp_conn == 0))
-	    {
-	      SCTP_DBG
-		("sctp_conn == NULL; return SCTP_ERROR_INVALID_CONNECTION");
-	      error0 = SCTP_ERROR_INVALID_CONNECTION;
-	      goto done;
-	    }
-	  if (is_ip4)
-	    {
-	      ip4_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip4_next_header (ip4_hdr);
-	      idx = sctp_sub_conn_id_via_ip4h (sctp_conn, ip4_hdr);
-	    }
-	  else
-	    {
-	      ip6_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip6_next_header (ip6_hdr);
-	      idx = sctp_sub_conn_id_via_ip6h (sctp_conn, ip6_hdr);
-	    }
-
-	  sctp_conn->sub_conn[idx].subconn_idx = idx;
-
-	  sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-	  sctp_chunk_hdr =
-	    (sctp_chunks_common_hdr_t *) (&full_hdr->common_hdr);
-
-	  u8 chunk_type = vnet_sctp_get_chunk_type (&full_hdr->common_hdr);
-
-	  switch (chunk_type)
-	    {
-	    case COOKIE_ECHO:
-	      error0 =
-		sctp_handle_cookie_echo (sctp_hdr, sctp_chunk_hdr, sctp_conn,
-					 idx, b0, &next0);
-	      break;
-
-	    case COOKIE_ACK:
-	      error0 =
-		sctp_handle_cookie_ack (sctp_hdr, sctp_chunk_hdr, sctp_conn,
-					idx, b0, &next0);
-	      break;
-
-	    case SACK:
-	      error0 =
-		sctp_handle_sack ((sctp_selective_ack_chunk_t *) sctp_hdr,
-				  sctp_conn, idx, b0, &next0);
-	      break;
-
-	    case HEARTBEAT:
-	      error0 =
-		sctp_handle_heartbeat ((sctp_hb_req_chunk_t *) sctp_hdr,
-				       sctp_conn, idx, b0, &next0);
-	      break;
-
-	    case HEARTBEAT_ACK:
-	      error0 =
-		sctp_handle_heartbeat_ack ((sctp_hb_ack_chunk_t *) sctp_hdr,
-					   sctp_conn, idx, b0, &next0);
-	      break;
-
-	    case DATA:
-	      error0 =
-		sctp_handle_data ((sctp_payload_data_chunk_t *) sctp_hdr,
-				  sctp_conn, idx, b0, &next0);
-	      break;
-
-	    case OPERATION_ERROR:
-	      error0 =
-		sctp_handle_operation_err (sctp_hdr, sctp_conn, idx, b0,
-					   &next0);
-	      break;
-
-	      /* All UNEXPECTED scenarios (wrong chunk received per state-machine)
-	       * are handled by the input-dispatcher function using the table-lookup
-	       * hence we should never get to the "default" case below.
-	       */
-	    default:
-	      error0 = SCTP_ERROR_UNKNOWN_CHUNK;
-	      next0 = sctp_next_drop (is_ip4);
-	      goto done;
-	    }
-
-	done:
-	  b0->error = node->errors[error0];
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sctp_rx_trace_t *t0 =
-		vlib_add_trace (vm, node, b0, sizeof (*t0));
-	      sctp_set_rx_trace_data (t0, sctp_conn, sctp_hdr, b0, is_ip4);
-	    }
-
-	  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);
-    }
-
-  errors = session_main_flush_enqueue_events (TRANSPORT_PROTO_SCTP,
-					      my_thread_index);
-
-  sctp_node_inc_counter (vm, is_ip4, sm->sctp4_established_phase_node_index,
-			 sm->sctp6_established_phase_node_index,
-			 SCTP_ERROR_EVENT_FIFO_FULL, errors);
-  sctp_flush_frame_to_output (vm, my_thread_index, is_ip4);
-
-  return from_frame->n_vectors;
-}
-
-VLIB_NODE_FN (sctp4_established_phase_node) (vlib_main_t * vm,
-					     vlib_node_runtime_t * node,
-					     vlib_frame_t * from_frame)
-{
-  return sctp46_established_phase_inline (vm, node, from_frame,
-					  1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_established_phase_node) (vlib_main_t * vm,
-					     vlib_node_runtime_t * node,
-					     vlib_frame_t * from_frame)
-{
-  return sctp46_established_phase_inline (vm, node, from_frame,
-					  0 /* is_ip4 */ );
-}
-
-static u8 *
-format_sctp_rx_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 *);
-  sctp_rx_trace_t *t = va_arg (*args, sctp_rx_trace_t *);
-  u32 indent = format_get_indent (s);
-
-  s = format (s, "%U\n%U%U",
-	      format_sctp_header, &t->sctp_header, 128,
-	      format_white_space, indent,
-	      format_sctp_connection, &t->sctp_connection, 1);
-
-  return s;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_listen_phase_node) =
-{
-  .name = "sctp4-listen",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_LISTEN_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_LISTEN_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_listen_phase_node) =
-{
-  .name = "sctp6-listen",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_LISTEN_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_LISTEN_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_established_phase_node) =
-{
-  .name = "sctp4-established",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_ESTABLISHED_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_ESTABLISHED_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_established_phase_node) =
-{
-  .name = "sctp6-established",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_LISTEN_PHASE_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_LISTEN_PHASE_NEXT_##s] = n,
-    foreach_sctp_state_next
-#undef _
-  },
-  .format_trace = format_sctp_rx_trace_short,
-};
-/* *INDENT-ON* */
-
-/*
- * This is the function executed first for the SCTP graph.
- * It takes care of doing the initial message parsing and
- * dispatch to the specialized function.
- */
-always_inline uword
-sctp46_input_dispatcher (vlib_main_t * vm, vlib_node_runtime_t * node,
-			 vlib_frame_t * from_frame, int is_ip4)
-{
-  u32 n_left_from, next_index, *from, *to_next;
-  u32 my_thread_index = vm->thread_index;
-  u8 result;
-  sctp_main_t *tm = vnet_get_sctp_main ();
-
-  from = vlib_frame_vector_args (from_frame);
-  n_left_from = from_frame->n_vectors;
-  next_index = node->cached_next_index;
-  sctp_set_time_now (my_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);
-
-      while (n_left_from > 0 && n_left_to_next > 0)
-	{
-	  int n_advance_bytes0, n_data_bytes0;
-	  u32 bi0, fib_index0;
-	  vlib_buffer_t *b0;
-	  sctp_header_t *sctp_hdr = 0;
-	  sctp_chunks_common_hdr_t *sctp_chunk_hdr = 0;
-	  sctp_connection_t *sctp_conn;
-	  transport_connection_t *trans_conn;
-	  ip4_header_t *ip4_hdr;
-	  ip6_header_t *ip6_hdr;
-	  u32 error0 = SCTP_ERROR_NO_LISTENER, next0 = SCTP_INPUT_NEXT_DROP;
-
-	  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);
-	  vnet_buffer (b0)->sctp.flags = 0;
-	  fib_index0 = vnet_buffer (b0)->ip.fib_index;
-
-	  /* Checksum computed by ipx_local no need to compute again */
-
-	  if (is_ip4)
-	    {
-	      ip4_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip4_next_header (ip4_hdr);
-
-	      sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-	      sctp_chunk_hdr = &full_hdr->common_hdr;
-
-	      n_advance_bytes0 =
-		(ip4_header_bytes (ip4_hdr) +
-		 sizeof (sctp_payload_data_chunk_t));
-	      n_data_bytes0 =
-		clib_net_to_host_u16 (ip4_hdr->length) - n_advance_bytes0;
-
-	      trans_conn = session_lookup_connection_wt4 (fib_index0,
-							  &ip4_hdr->dst_address,
-							  &ip4_hdr->src_address,
-							  sctp_hdr->dst_port,
-							  sctp_hdr->src_port,
-							  TRANSPORT_PROTO_SCTP,
-							  my_thread_index,
-							  &result);
-	    }
-	  else
-	    {
-	      ip6_hdr = vlib_buffer_get_current (b0);
-	      sctp_hdr = ip6_next_header (ip6_hdr);
-
-	      sctp_full_hdr_t *full_hdr = (sctp_full_hdr_t *) sctp_hdr;
-	      sctp_chunk_hdr = &full_hdr->common_hdr;
-
-	      n_advance_bytes0 = sctp_header_bytes ();
-	      n_data_bytes0 =
-		clib_net_to_host_u16 (ip6_hdr->payload_length) -
-		n_advance_bytes0;
-	      n_advance_bytes0 += sizeof (ip6_hdr[0]);
-
-	      trans_conn = session_lookup_connection_wt6 (fib_index0,
-							  &ip6_hdr->dst_address,
-							  &ip6_hdr->src_address,
-							  sctp_hdr->dst_port,
-							  sctp_hdr->src_port,
-							  TRANSPORT_PROTO_SCTP,
-							  my_thread_index,
-							  &result);
-	    }
-
-	  /* Length check */
-	  if (PREDICT_FALSE (n_advance_bytes0 < 0))
-	    {
-	      error0 = SCTP_ERROR_LENGTH;
-	      goto done;
-	    }
-
-	  sctp_conn = sctp_get_connection_from_transport (trans_conn);
-	  vnet_sctp_common_hdr_params_net_to_host (sctp_chunk_hdr);
-
-	  u8 chunk_type = vnet_sctp_get_chunk_type (sctp_chunk_hdr);
-	  if (chunk_type >= UNKNOWN)
-	    {
-	      clib_warning
-		("Received an unrecognized chunk; sending back OPERATION_ERROR chunk");
-
-	      sctp_prepare_operation_error (sctp_conn, SCTP_PRIMARY_PATH_IDX,
-					    b0, UNRECOGNIZED_CHUNK_TYPE);
-
-	      error0 = SCTP_ERROR_UNKNOWN_CHUNK;
-	      next0 = sctp_next_output (is_ip4);
-	      goto done;
-	    }
-
-	  vnet_buffer (b0)->sctp.hdr_offset =
-	    (u8 *) sctp_hdr - (u8 *) vlib_buffer_get_current (b0);
-
-	  /* Session exists */
-	  if (PREDICT_TRUE (0 != sctp_conn))
-	    {
-	      /* Save connection index */
-	      vnet_buffer (b0)->sctp.connection_index = trans_conn->c_index;
-	      vnet_buffer (b0)->sctp.data_offset = n_advance_bytes0;
-	      vnet_buffer (b0)->sctp.data_len = n_data_bytes0;
-
-	      next0 = tm->dispatch_table[sctp_conn->state][chunk_type].next;
-	      error0 = tm->dispatch_table[sctp_conn->state][chunk_type].error;
-
-	      SCTP_DBG_STATE_MACHINE
-		("S_INDEX = %u, C_INDEX = %u, TRANS_CONN = %p, SCTP_CONN = %p, CURRENT_CONNECTION_STATE = %s,"
-		 "CHUNK_TYPE_RECEIVED = %s " "NEXT_PHASE = %s",
-		 sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
-		 connection.s_index,
-		 sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].
-		 connection.c_index, trans_conn, sctp_conn,
-		 sctp_state_to_string (sctp_conn->state),
-		 sctp_chunk_to_string (chunk_type), phase_to_string (next0));
-
-	      if (chunk_type == DATA)
-		SCTP_ADV_DBG ("n_advance_bytes0 = %u, n_data_bytes0 = %u",
-			      n_advance_bytes0, n_data_bytes0);
-
-	    }
-	  else
-	    {
-	      if (result)
-		{
-		  next0 = SCTP_INPUT_NEXT_DROP;
-		  error0 = SCTP_ERROR_NONE + result;
-		}
-	      else if ((is_ip4 && tm->punt_unknown4) ||
-		       (!is_ip4 && tm->punt_unknown6))
-		{
-		  next0 = SCTP_INPUT_NEXT_PUNT_PHASE;
-		  error0 = SCTP_ERROR_PUNT;
-		}
-	      else
-		{
-		  next0 = SCTP_INPUT_NEXT_DROP;
-		  error0 = SCTP_ERROR_NO_LISTENER;
-		}
-	      SCTP_DBG_STATE_MACHINE ("sctp_conn == NULL, NEXT_PHASE = %s",
-				      phase_to_string (next0));
-	      sctp_conn = 0;
-	    }
-
-	done:
-	  b0->error = error0 ? node->errors[error0] : 0;
-
-	  if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
-	    {
-	      sctp_rx_trace_t *t0 =
-		vlib_add_trace (vm, node, b0, sizeof (*t0));
-	      sctp_set_rx_trace_data (t0, sctp_conn, sctp_hdr, b0, is_ip4);
-	    }
-	  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;
-}
-
-VLIB_NODE_FN (sctp4_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
-				 vlib_frame_t * from_frame)
-{
-  return sctp46_input_dispatcher (vm, node, from_frame, 1 /* is_ip4 */ );
-}
-
-VLIB_NODE_FN (sctp6_input_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
-				 vlib_frame_t * from_frame)
-{
-  return sctp46_input_dispatcher (vm, node, from_frame, 0 /* is_ip4 */ );
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp4_input_node) =
-{
-  .name = "sctp4-input",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_INPUT_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_INPUT_NEXT_##s] = n,
-    foreach_sctp4_input_next
-#undef _
-  },
-  .format_buffer = format_sctp_header,
-  .format_trace = format_sctp_rx_trace,
-};
-/* *INDENT-ON* */
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (sctp6_input_node) =
-{
-  .name = "sctp6-input",
-  /* Takes a vector of packets. */
-  .vector_size = sizeof (u32),
-  .n_errors = SCTP_N_ERROR,
-  .error_strings = sctp_error_strings,
-  .n_next_nodes = SCTP_INPUT_N_NEXT,
-  .next_nodes =
-  {
-#define _(s,n) [SCTP_INPUT_NEXT_##s] = n,
-    foreach_sctp6_input_next
-#undef _
-  },
-  .format_buffer = format_sctp_header,
-  .format_trace = format_sctp_rx_trace,
-};
-/* *INDENT-ON* */
-
-#ifndef CLIB_MARCH_VARIANT
-static void
-sctp_dispatch_table_init (sctp_main_t * tm)
-{
-  int i, j;
-  for (i = 0; i < ARRAY_LEN (tm->dispatch_table); i++)
-    for (j = 0; j < ARRAY_LEN (tm->dispatch_table[i]); j++)
-      {
-	tm->dispatch_table[i][j].next = SCTP_INPUT_NEXT_DROP;
-	tm->dispatch_table[i][j].error = SCTP_ERROR_DISPATCH;
-      }
-
-#define _(t,f,n,e)                                           	\
-do {                                                       	\
-    tm->dispatch_table[SCTP_STATE_##t][f].next = (n);         	\
-    tm->dispatch_table[SCTP_STATE_##t][f].error = (e);        	\
-} while (0)
-
-  /*
-   * SCTP STATE-MACHINE states:
-   *
-   * _(CLOSED, "CLOSED")                         \
-   * _(COOKIE_WAIT, "COOKIE_WAIT")               \
-   * _(COOKIE_ECHOED, "COOKIE_ECHOED")           \
-   * _(ESTABLISHED, "ESTABLISHED")               \
-   * _(SHUTDOWN_PENDING, "SHUTDOWN_PENDING")     \
-   * _(SHUTDOWN_SENT, "SHUTDOWN_SENT")           \
-   * _(SHUTDOWN_RECEIVED, "SHUTDOWN_RECEIVED")   \
-   * _(SHUTDOWN_ACK_SENT, "SHUTDOWN_ACK_SENT")
-   */
-  //_(CLOSED, DATA, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);     /* UNEXPECTED DATA chunk which requires special handling */
-  _(CLOSED, INIT, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);
-  _(CLOSED, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(CLOSED, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION);	/* UNEXPECTED SACK chunk */
-  _(CLOSED, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT chunk */
-  _(CLOSED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT_ACK chunk */
-  _(CLOSED, ABORT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);
-  _(CLOSED, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN chunk */
-  _(CLOSED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN_ACK chunk */
-  _(CLOSED, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION);	/* UNEXPECTED OPERATION_ERROR chunk */
-  _(CLOSED, COOKIE_ECHO, SCTP_INPUT_NEXT_ESTABLISHED_PHASE, SCTP_ERROR_NONE);
-  _(CLOSED, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(CLOSED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(CLOSED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(CLOSED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(CLOSED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);
-
-  _(COOKIE_WAIT, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_NONE);	/* UNEXPECTED DATA chunk which requires special handling */
-  _(COOKIE_WAIT, INIT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);	/* UNEXPECTED INIT chunk which requires special handling */
-  _(COOKIE_WAIT, INIT_ACK, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);
-  _(COOKIE_WAIT, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION);	/* UNEXPECTED SACK chunk */
-  _(COOKIE_WAIT, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT chunk */
-  _(COOKIE_WAIT, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT_ACK chunk */
-  _(COOKIE_WAIT, ABORT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);
-  _(COOKIE_WAIT, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN chunk */
-  _(COOKIE_WAIT, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN_ACK chunk */
-  _(COOKIE_WAIT, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION);	/* UNEXPECTED OPERATION_ERROR chunk */
-  _(COOKIE_WAIT, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION);	/* UNEXPECTED COOKIE_ECHO chunk */
-  _(COOKIE_WAIT, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(COOKIE_WAIT, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(COOKIE_WAIT, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(COOKIE_WAIT, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(COOKIE_WAIT, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  _(COOKIE_ECHOED, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_NONE);
-  _(COOKIE_ECHOED, INIT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);	/* UNEXPECTED INIT chunk which requires special handling */
-  _(COOKIE_ECHOED, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(COOKIE_ECHOED, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION);	/* UNEXPECTED SACK chunk */
-  _(COOKIE_ECHOED, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT chunk */
-  _(COOKIE_ECHOED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT_ACK chunk */
-  _(COOKIE_ECHOED, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION);	/* UNEXPECTED ABORT chunk */
-  _(COOKIE_ECHOED, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN chunk */
-  _(COOKIE_ECHOED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN_ACK chunk */
-  _(COOKIE_ECHOED, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION);	/* UNEXPECTED OPERATION_ERROR chunk */
-  _(COOKIE_ECHOED, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION);	/* UNEXPECTED COOKIE_ECHO chunk */
-  _(COOKIE_ECHOED, COOKIE_ACK, SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
-    SCTP_ERROR_NONE);
-  _(COOKIE_ECHOED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(COOKIE_ECHOED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(COOKIE_ECHOED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(COOKIE_ECHOED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  _(ESTABLISHED, DATA, SCTP_INPUT_NEXT_ESTABLISHED_PHASE, SCTP_ERROR_NONE);
-  _(ESTABLISHED, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION);	/* UNEXPECTED INIT chunk */
-  _(ESTABLISHED, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(ESTABLISHED, SACK, SCTP_INPUT_NEXT_ESTABLISHED_PHASE, SCTP_ERROR_NONE);
-  _(ESTABLISHED, HEARTBEAT, SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
-    SCTP_ERROR_NONE);
-  _(ESTABLISHED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_ESTABLISHED_PHASE,
-    SCTP_ERROR_NONE);
-  _(ESTABLISHED, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION);	/* UNEXPECTED ABORT chunk */
-  _(ESTABLISHED, SHUTDOWN, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
-  _(ESTABLISHED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN_ACK chunk */
-  _(ESTABLISHED, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION);	/* UNEXPECTED OPERATION_ERROR chunk */
-  _(ESTABLISHED, COOKIE_ECHO, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_COOKIE_ECHO_VIOLATION);	/* UNEXPECTED COOKIE_ECHO chunk */
-  _(ESTABLISHED, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(ESTABLISHED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(ESTABLISHED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(ESTABLISHED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(ESTABLISHED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  _(SHUTDOWN_PENDING, DATA, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
-  _(SHUTDOWN_PENDING, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION);	/* UNEXPECTED INIT chunk */
-  _(SHUTDOWN_PENDING, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(SHUTDOWN_PENDING, SACK, SCTP_INPUT_NEXT_LISTEN_PHASE, SCTP_ERROR_NONE);
-  _(SHUTDOWN_PENDING, HEARTBEAT, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_PENDING, HEARTBEAT_ACK, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_PENDING, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION);	/* UNEXPECTED ABORT chunk */
-  _(SHUTDOWN_PENDING, SHUTDOWN, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_PENDING, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN_ACK chunk */
-  _(SHUTDOWN_PENDING, OPERATION_ERROR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_OPERATION_ERROR_VIOLATION);	/* UNEXPECTED OPERATION_ERROR chunk */
-  _(SHUTDOWN_PENDING, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_PENDING, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(SHUTDOWN_PENDING, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(SHUTDOWN_PENDING, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(SHUTDOWN_PENDING, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(SHUTDOWN_PENDING, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  _(SHUTDOWN_SENT, DATA, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
-  _(SHUTDOWN_SENT, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION);	/* UNEXPECTED INIT chunk */
-  _(SHUTDOWN_SENT, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(SHUTDOWN_SENT, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION);	/* UNEXPECTED SACK chunk */
-  _(SHUTDOWN_SENT, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT chunk */
-  _(SHUTDOWN_SENT, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT_ACK chunk */
-  _(SHUTDOWN_SENT, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION);	/* UNEXPECTED ABORT chunk */
-  _(SHUTDOWN_SENT, SHUTDOWN, SCTP_INPUT_NEXT_SHUTDOWN_PHASE, SCTP_ERROR_NONE);
-  _(SHUTDOWN_SENT, SHUTDOWN_ACK, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_SENT, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_SENT, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(SHUTDOWN_SENT, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(SHUTDOWN_SENT, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(SHUTDOWN_SENT, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(SHUTDOWN_SENT, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  _(SHUTDOWN_RECEIVED, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_DATA_CHUNK_VIOLATION);	/* UNEXPECTED DATA chunk */
-  _(SHUTDOWN_RECEIVED, INIT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_INIT_CHUNK_VIOLATION);	/* UNEXPECTED INIT chunk */
-  _(SHUTDOWN_RECEIVED, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(SHUTDOWN_RECEIVED, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION);	/* UNEXPECTED INIT chunk */
-  _(SHUTDOWN_RECEIVED, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT chunk */
-  _(SHUTDOWN_RECEIVED, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT_ACK chunk */
-  _(SHUTDOWN_RECEIVED, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION);	/* UNEXPECTED ABORT chunk */
-  _(SHUTDOWN_RECEIVED, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN chunk */
-  _(SHUTDOWN_RECEIVED, SHUTDOWN_ACK, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_RECEIVED, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_RECEIVED, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(SHUTDOWN_RECEIVED, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(SHUTDOWN_RECEIVED, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(SHUTDOWN_RECEIVED, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_COMPLETE_VIOLATION);	/* UNEXPECTED SHUTDOWN_COMPLETE chunk */
-  _(SHUTDOWN_RECEIVED, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  _(SHUTDOWN_ACK_SENT, DATA, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_DATA_CHUNK_VIOLATION);	/* UNEXPECTED DATA chunk */
-  _(SHUTDOWN_ACK_SENT, INIT, SCTP_INPUT_NEXT_RCV_PHASE, SCTP_ERROR_NONE);	/* UNEXPECTED INIT chunk */
-  _(SHUTDOWN_ACK_SENT, INIT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED INIT_ACK chunk */
-  _(SHUTDOWN_ACK_SENT, SACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SACK_CHUNK_VIOLATION);	/* UNEXPECTED INIT chunk */
-  _(SHUTDOWN_ACK_SENT, HEARTBEAT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT chunk */
-  _(SHUTDOWN_ACK_SENT, HEARTBEAT_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_HEARTBEAT_ACK_CHUNK_VIOLATION);	/* UNEXPECTED HEARTBEAT_ACK chunk */
-  _(SHUTDOWN_ACK_SENT, ABORT, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ABORT_CHUNK_VIOLATION);	/* UNEXPECTED ABORT chunk */
-  _(SHUTDOWN_ACK_SENT, SHUTDOWN, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN chunk */
-  _(SHUTDOWN_ACK_SENT, SHUTDOWN_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_SHUTDOWN_ACK_CHUNK_VIOLATION);	/* UNEXPECTED SHUTDOWN_ACK chunk */
-  _(SHUTDOWN_ACK_SENT, COOKIE_ECHO, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_ACK_SENT, COOKIE_ACK, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ACK_DUP);	/* UNEXPECTED COOKIE_ACK chunk */
-  _(SHUTDOWN_ACK_SENT, ECNE, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_ECNE_VIOLATION);	/* UNEXPECTED ECNE chunk */
-  _(SHUTDOWN_ACK_SENT, CWR, SCTP_INPUT_NEXT_DROP, SCTP_ERROR_CWR_VIOLATION);	/* UNEXPECTED CWR chunk */
-  _(SHUTDOWN_ACK_SENT, SHUTDOWN_COMPLETE, SCTP_INPUT_NEXT_SHUTDOWN_PHASE,
-    SCTP_ERROR_NONE);
-  _(SHUTDOWN_ACK_SENT, OPERATION_ERROR, SCTP_INPUT_NEXT_LISTEN_PHASE,
-    SCTP_ERROR_NONE);
-
-  /* TODO: Handle COOKIE ECHO when a TCB Exists */
-
-#undef _
-}
-
-clib_error_t *
-sctp_input_init (vlib_main_t * vm)
-{
-  clib_error_t *error = 0;
-  sctp_main_t *tm = vnet_get_sctp_main ();
-
-  if ((error = vlib_call_init_function (vm, sctp_init)))
-    return error;
-
-  /* Initialize dispatch table. */
-  sctp_dispatch_table_init (tm);
-
-  return error;
-}
-
-VLIB_INIT_FUNCTION (sctp_input_init);
-#endif /* CLIB_MARCH_VARIANT */
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */