tcp: move features to separate files

Type: refactor

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: Ia477b8dba9266f47907967e363c11048e5cd95ab

1 files changed, 1 insertions, 1052 deletions

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index a1d774dc89b..2ac938a1b1e 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -19,11 +19,10 @@
  */
 
 #include <vnet/tcp/tcp.h>
+#include <vnet/tcp/tcp_inlines.h>
 #include <vnet/session/session.h>
 #include <vnet/fib/fib.h>
 #include <vnet/dpo/load_balance.h>
-#include <vnet/dpo/receive_dpo.h>
-#include <vnet/ip-neighbor/ip_neighbor.h>
 #include <math.h>
 
 tcp_main_t tcp_main;
@@ -707,51 +706,6 @@ tcp_connection_init_vars (tcp_connection_t * tc)
   tc->start_ts = tcp_time_now_us (tc->c_thread_index);
 }
 
-void
-tcp_init_w_buffer (tcp_connection_t * tc, vlib_buffer_t * b, u8 is_ip4)
-{
-  tcp_header_t *th = tcp_buffer_hdr (b);
-
-  tc->c_lcl_port = th->dst_port;
-  tc->c_rmt_port = th->src_port;
-  tc->c_is_ip4 = is_ip4;
-
-  if (is_ip4)
-    {
-      ip4_header_t *ip4 = vlib_buffer_get_current (b);
-      tc->c_lcl_ip4.as_u32 = ip4->dst_address.as_u32;
-      tc->c_rmt_ip4.as_u32 = ip4->src_address.as_u32;
-    }
-  else
-    {
-      ip6_header_t *ip6 = vlib_buffer_get_current (b);
-      clib_memcpy_fast (&tc->c_lcl_ip6, &ip6->dst_address,
-			sizeof (ip6_address_t));
-      clib_memcpy_fast (&tc->c_rmt_ip6, &ip6->src_address,
-			sizeof (ip6_address_t));
-    }
-
-  tc->irs = vnet_buffer (b)->tcp.seq_number;
-  tc->rcv_nxt = vnet_buffer (b)->tcp.seq_number + 1;
-  tc->rcv_las = tc->rcv_nxt;
-  tc->sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
-  tc->snd_wl1 = vnet_buffer (b)->tcp.seq_number;
-  tc->snd_wl2 = vnet_buffer (b)->tcp.ack_number;
-
-  /* RFC1323: TSval timestamps sent on {SYN} and {SYN,ACK}
-   * segments are used to initialize PAWS. */
-  if (tcp_opts_tstamp (&tc->rcv_opts))
-    {
-      tc->tsval_recent = tc->rcv_opts.tsval;
-      tc->tsval_recent_age = tcp_time_now ();
-    }
-
-  if (tcp_opts_wscale (&tc->rcv_opts))
-    tc->snd_wscale = tc->rcv_opts.wscale;
-
-  tc->snd_wnd = clib_net_to_host_u16 (th->window) << tc->snd_wscale;
-}
-
 static int
 tcp_alloc_custom_local_endpoint (tcp_main_t * tm, ip46_address_t * lcl_addr,
 				 u16 * lcl_port, u8 is_ip4)
@@ -831,256 +785,6 @@ tcp_session_open (transport_endpoint_cfg_t * rmt)
   return tc->c_c_index;
 }
 
-const char *tcp_fsm_states[] = {
-#define _(sym, str) str,
-  foreach_tcp_fsm_state
-#undef _
-};
-
-u8 *
-format_tcp_state (u8 * s, va_list * args)
-{
-  u32 state = va_arg (*args, u32);
-
-  if (state < TCP_N_STATES)
-    s = format (s, "%s", tcp_fsm_states[state]);
-  else
-    s = format (s, "UNKNOWN (%d (0x%x))", state, state);
-  return s;
-}
-
-const char *tcp_cfg_flags_str[] = {
-#define _(sym, str) str,
-  foreach_tcp_cfg_flag
-#undef _
-};
-
-static u8 *
-format_tcp_cfg_flags (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  int i, last = -1;
-
-  for (i = 0; i < TCP_CFG_N_FLAG_BITS; i++)
-    if (tc->cfg_flags & (1 << i))
-      last = i;
-  for (i = 0; i < last; i++)
-    {
-      if (tc->cfg_flags & (1 << i))
-	s = format (s, "%s, ", tcp_cfg_flags_str[i]);
-    }
-  if (last >= 0)
-    s = format (s, "%s", tcp_cfg_flags_str[last]);
-  return s;
-}
-
-const char *tcp_connection_flags_str[] = {
-#define _(sym, str) str,
-  foreach_tcp_connection_flag
-#undef _
-};
-
-static u8 *
-format_tcp_connection_flags (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  int i, last = -1;
-
-  for (i = 0; i < TCP_CONN_N_FLAG_BITS; i++)
-    if (tc->flags & (1 << i))
-      last = i;
-  for (i = 0; i < last; i++)
-    {
-      if (tc->flags & (1 << i))
-	s = format (s, "%s, ", tcp_connection_flags_str[i]);
-    }
-  if (last >= 0)
-    s = format (s, "%s", tcp_connection_flags_str[last]);
-  return s;
-}
-
-const char *tcp_conn_timers[] = {
-#define _(sym, str) str,
-  foreach_tcp_timer
-#undef _
-};
-
-static u8 *
-format_tcp_timers (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  int i, last = -1;
-
-  for (i = 0; i < TCP_N_TIMERS; i++)
-    if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
-      last = i;
-
-  for (i = 0; i < last; i++)
-    {
-      if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
-	s = format (s, "%s,", tcp_conn_timers[i]);
-    }
-
-  if (last >= 0)
-    s = format (s, "%s", tcp_conn_timers[i]);
-
-  return s;
-}
-
-static u8 *
-format_tcp_congestion_status (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  if (tcp_in_recovery (tc))
-    s = format (s, "recovery");
-  else if (tcp_in_fastrecovery (tc))
-    s = format (s, "fastrecovery");
-  else
-    s = format (s, "none");
-  return s;
-}
-
-static i32
-tcp_rcv_wnd_available (tcp_connection_t * tc)
-{
-  return (i32) tc->rcv_wnd - (tc->rcv_nxt - tc->rcv_las);
-}
-
-static u8 *
-format_tcp_congestion (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  u32 indent = format_get_indent (s), prr_space = 0;
-
-  s = format (s, "%U ", format_tcp_congestion_status, tc);
-  s = format (s, "algo %s cwnd %u ssthresh %u bytes_acked %u\n",
-	      tc->cc_algo->name, tc->cwnd, tc->ssthresh, tc->bytes_acked);
-  s = format (s, "%Ucc space %u prev_cwnd %u prev_ssthresh %u\n",
-	      format_white_space, indent, tcp_available_cc_snd_space (tc),
-	      tc->prev_cwnd, tc->prev_ssthresh);
-  s = format (s, "%Usnd_cong %u dupack %u limited_tx %u\n",
-	      format_white_space, indent, tc->snd_congestion - tc->iss,
-	      tc->rcv_dupacks, tc->limited_transmit - tc->iss);
-  s = format (s, "%Urxt_bytes %u rxt_delivered %u rxt_head %u rxt_ts %u\n",
-	      format_white_space, indent, tc->snd_rxt_bytes,
-	      tc->rxt_delivered, tc->rxt_head - tc->iss,
-	      tcp_time_now_w_thread (tc->c_thread_index) - tc->snd_rxt_ts);
-  if (tcp_in_fastrecovery (tc))
-    prr_space = tcp_fastrecovery_prr_snd_space (tc);
-  s = format (s, "%Uprr_start %u prr_delivered %u prr space %u\n",
-	      format_white_space, indent, tc->prr_start - tc->iss,
-	      tc->prr_delivered, prr_space);
-  return s;
-}
-
-static u8 *
-format_tcp_stats (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  u32 indent = format_get_indent (s);
-  s = format (s, "in segs %lu dsegs %lu bytes %lu dupacks %u\n",
-	      tc->segs_in, tc->data_segs_in, tc->bytes_in, tc->dupacks_in);
-  s = format (s, "%Uout segs %lu dsegs %lu bytes %lu dupacks %u\n",
-	      format_white_space, indent, tc->segs_out,
-	      tc->data_segs_out, tc->bytes_out, tc->dupacks_out);
-  s = format (s, "%Ufr %u tr %u rxt segs %lu bytes %lu duration %.3f\n",
-	      format_white_space, indent, tc->fr_occurences,
-	      tc->tr_occurences, tc->segs_retrans, tc->bytes_retrans,
-	      tcp_time_now_us (tc->c_thread_index) - tc->start_ts);
-  s = format (s, "%Uerr wnd data below %u above %u ack below %u above %u",
-	      format_white_space, indent, tc->errors.below_data_wnd,
-	      tc->errors.above_data_wnd, tc->errors.below_ack_wnd,
-	      tc->errors.above_ack_wnd);
-  return s;
-}
-
-static u8 *
-format_tcp_vars (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  s = format (s, " index: %u cfg: %U flags: %U timers: %U\n", tc->c_c_index,
-	      format_tcp_cfg_flags, tc, format_tcp_connection_flags, tc,
-	      format_tcp_timers, tc);
-  s = format (s, " snd_una %u snd_nxt %u snd_una_max %u",
-	      tc->snd_una - tc->iss, tc->snd_nxt - tc->iss,
-	      tc->snd_una_max - tc->iss);
-  s = format (s, " rcv_nxt %u rcv_las %u\n",
-	      tc->rcv_nxt - tc->irs, tc->rcv_las - tc->irs);
-  s = format (s, " snd_wnd %u rcv_wnd %u rcv_wscale %u ",
-	      tc->snd_wnd, tc->rcv_wnd, tc->rcv_wscale);
-  s = format (s, "snd_wl1 %u snd_wl2 %u\n", tc->snd_wl1 - tc->irs,
-	      tc->snd_wl2 - tc->iss);
-  s = format (s, " flight size %u out space %u rcv_wnd_av %u",
-	      tcp_flight_size (tc), tcp_available_output_snd_space (tc),
-	      tcp_rcv_wnd_available (tc));
-  s = format (s, " tsval_recent %u\n", tc->tsval_recent);
-  s = format (s, " tsecr %u tsecr_last_ack %u tsval_recent_age %u",
-	      tc->rcv_opts.tsecr, tc->tsecr_last_ack,
-	      tcp_time_now () - tc->tsval_recent_age);
-  s = format (s, " snd_mss %u\n", tc->snd_mss);
-  s = format (s, " rto %u rto_boff %u srtt %u us %.3f rttvar %u rtt_ts %.4f",
-	      tc->rto, tc->rto_boff, tc->srtt, tc->mrtt_us * 1000, tc->rttvar,
-	      tc->rtt_ts);
-  s = format (s, " rtt_seq %u\n", tc->rtt_seq - tc->iss);
-  s = format (s, " next_node %u opaque 0x%x fib_index %u\n",
-	      tc->next_node_index, tc->next_node_opaque, tc->c_fib_index);
-  s = format (s, " cong:   %U", format_tcp_congestion, tc);
-
-  if (tc->state >= TCP_STATE_ESTABLISHED)
-    {
-      s = format (s, " sboard: %U\n", format_tcp_scoreboard, &tc->sack_sb,
-		  tc);
-      s = format (s, " stats: %U\n", format_tcp_stats, tc);
-    }
-  if (vec_len (tc->snd_sacks))
-    s = format (s, " sacks tx: %U\n", format_tcp_sacks, tc);
-
-  return s;
-}
-
-u8 *
-format_tcp_connection_id (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  if (!tc)
-    return s;
-  if (tc->c_is_ip4)
-    {
-      s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
-		  tc->c_s_index, "T", format_ip4_address, &tc->c_lcl_ip4,
-		  clib_net_to_host_u16 (tc->c_lcl_port), format_ip4_address,
-		  &tc->c_rmt_ip4, clib_net_to_host_u16 (tc->c_rmt_port));
-    }
-  else
-    {
-      s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
-		  tc->c_s_index, "T", format_ip6_address, &tc->c_lcl_ip6,
-		  clib_net_to_host_u16 (tc->c_lcl_port), format_ip6_address,
-		  &tc->c_rmt_ip6, clib_net_to_host_u16 (tc->c_rmt_port));
-    }
-
-  return s;
-}
-
-u8 *
-format_tcp_connection (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  u32 verbose = va_arg (*args, u32);
-
-  if (!tc)
-    return s;
-  s = format (s, "%-50U", format_tcp_connection_id, tc);
-  if (verbose)
-    {
-      s = format (s, "%-15U", format_tcp_state, tc->state);
-      if (verbose > 1)
-	s = format (s, "\n%U", format_tcp_vars, tc);
-    }
-
-  return s;
-}
-
 static u8 *
 format_tcp_session (u8 * s, va_list * args)
 {
@@ -1119,100 +823,6 @@ format_tcp_half_open_session (u8 * s, va_list * args)
   return format (s, "%U", format_tcp_connection_id, tc);
 }
 
-u8 *
-format_tcp_sacks (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  sack_block_t *sacks = tc->snd_sacks;
-  sack_block_t *block;
-  int i, len = 0;
-
-  len = vec_len (sacks);
-  for (i = 0; i < len - 1; i++)
-    {
-      block = &sacks[i];
-      s = format (s, " start %u end %u\n", block->start - tc->irs,
-		  block->end - tc->irs);
-    }
-  if (len)
-    {
-      block = &sacks[len - 1];
-      s = format (s, " start %u end %u", block->start - tc->irs,
-		  block->end - tc->irs);
-    }
-  return s;
-}
-
-u8 *
-format_tcp_rcv_sacks (u8 * s, va_list * args)
-{
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  sack_block_t *sacks = tc->rcv_opts.sacks;
-  sack_block_t *block;
-  int i, len = 0;
-
-  len = vec_len (sacks);
-  for (i = 0; i < len - 1; i++)
-    {
-      block = &sacks[i];
-      s = format (s, " start %u end %u\n", block->start - tc->iss,
-		  block->end - tc->iss);
-    }
-  if (len)
-    {
-      block = &sacks[len - 1];
-      s = format (s, " start %u end %u", block->start - tc->iss,
-		  block->end - tc->iss);
-    }
-  return s;
-}
-
-static u8 *
-format_tcp_sack_hole (u8 * s, va_list * args)
-{
-  sack_scoreboard_hole_t *hole = va_arg (*args, sack_scoreboard_hole_t *);
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  if (tc)
-    s = format (s, "  [%u, %u]", hole->start - tc->iss, hole->end - tc->iss);
-  else
-    s = format (s, "  [%u, %u]", hole->start, hole->end);
-  return s;
-}
-
-u8 *
-format_tcp_scoreboard (u8 * s, va_list * args)
-{
-  sack_scoreboard_t *sb = va_arg (*args, sack_scoreboard_t *);
-  tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
-  sack_scoreboard_hole_t *hole;
-  u32 indent = format_get_indent (s);
-
-  s = format (s, "sacked %u last_sacked %u lost %u last_lost %u"
-	      " rxt_sacked %u\n",
-	      sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes,
-	      sb->last_lost_bytes, sb->rxt_sacked);
-  s = format (s, "%Ulast_delivered %u high_sacked %u is_reneging %u\n",
-	      format_white_space, indent, sb->last_bytes_delivered,
-	      sb->high_sacked - tc->iss, sb->is_reneging);
-  s = format (s, "%Ucur_rxt_hole %u high_rxt %u rescue_rxt %u",
-	      format_white_space, indent, sb->cur_rxt_hole,
-	      sb->high_rxt - tc->iss, sb->rescue_rxt - tc->iss);
-
-  hole = scoreboard_first_hole (sb);
-  if (hole)
-    s = format (s, "\n%Uhead %u tail %u %u holes:\n%U", format_white_space,
-		indent, sb->head, sb->tail, pool_elts (sb->holes),
-		format_white_space, indent);
-
-  while (hole)
-    {
-      s = format (s, "%U", format_tcp_sack_hole, hole, tc);
-      hole = scoreboard_next_hole (sb, hole);
-    }
-
-  return s;
-}
-
 static transport_connection_t *
 tcp_session_get_transport (u32 conn_index, u32 thread_index)
 {
@@ -1813,7 +1423,6 @@ tcp_init (vlib_main_t * vm)
   transport_register_protocol (TRANSPORT_PROTO_TCP, &tcp_proto,
 			       FIB_PROTOCOL_IP6, tcp6_output_node.index);
 
-  tcp_api_reference ();
   tcp_configuration_init ();
 
   tm->cc_algo_by_name = hash_create_string (0, sizeof (uword));
@@ -1823,666 +1432,6 @@ tcp_init (vlib_main_t * vm)
 
 VLIB_INIT_FUNCTION (tcp_init);
 
-uword
-unformat_tcp_cc_algo (unformat_input_t * input, va_list * va)
-{
-  tcp_cc_algorithm_type_e *result = va_arg (*va, tcp_cc_algorithm_type_e *);
-  tcp_main_t *tm = &tcp_main;
-  char *cc_algo_name;
-  u8 found = 0;
-  uword *p;
-
-  if (unformat (input, "%s", &cc_algo_name)
-      && ((p = hash_get_mem (tm->cc_algo_by_name, cc_algo_name))))
-    {
-      *result = *p;
-      found = 1;
-    }
-
-  vec_free (cc_algo_name);
-  return found;
-}
-
-uword
-unformat_tcp_cc_algo_cfg (unformat_input_t * input, va_list * va)
-{
-  tcp_main_t *tm = vnet_get_tcp_main ();
-  tcp_cc_algorithm_t *cc_alg;
-  unformat_input_t sub_input;
-  int found = 0;
-
-  vec_foreach (cc_alg, tm->cc_algos)
-  {
-    if (!unformat (input, cc_alg->name))
-      continue;
-
-    if (cc_alg->unformat_cfg
-	&& unformat (input, "%U", unformat_vlib_cli_sub_input, &sub_input))
-      {
-	if (cc_alg->unformat_cfg (&sub_input))
-	  found = 1;
-      }
-  }
-  return found;
-}
-
-static clib_error_t *
-tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
-{
-  u32 cwnd_multiplier, tmp_time;
-  uword memory_size;
-
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (input, "preallocated-connections %d",
-		    &tcp_cfg.preallocated_connections))
-	;
-      else if (unformat (input, "preallocated-half-open-connections %d",
-			 &tcp_cfg.preallocated_half_open_connections))
-	;
-      else if (unformat (input, "buffer-fail-fraction %f",
-			 &tcp_cfg.buffer_fail_fraction))
-	;
-      else if (unformat (input, "max-rx-fifo %U", unformat_memory_size,
-			 &memory_size))
-	{
-	  if (memory_size >= 0x100000000)
-	    {
-	      return clib_error_return
-		(0, "max-rx-fifo %llu (0x%llx) too large", memory_size,
-		 memory_size);
-	    }
-	  tcp_cfg.max_rx_fifo = memory_size;
-	}
-      else if (unformat (input, "min-rx-fifo %U", unformat_memory_size,
-			 &memory_size))
-	{
-	  if (memory_size >= 0x100000000)
-	    {
-	      return clib_error_return
-		(0, "min-rx-fifo %llu (0x%llx) too large", memory_size,
-		 memory_size);
-	    }
-	  tcp_cfg.min_rx_fifo = memory_size;
-	}
-      else if (unformat (input, "mtu %u", &tcp_cfg.default_mtu))
-	;
-      else if (unformat (input, "rwnd-min-update-ack %d",
-			 &tcp_cfg.rwnd_min_update_ack))
-	;
-      else if (unformat (input, "initial-cwnd-multiplier %u",
-			 &cwnd_multiplier))
-	tcp_cfg.initial_cwnd_multiplier = cwnd_multiplier;
-      else if (unformat (input, "no-tx-pacing"))
-	tcp_cfg.enable_tx_pacing = 0;
-      else if (unformat (input, "tso"))
-	tcp_cfg.allow_tso = 1;
-      else if (unformat (input, "no-csum-offload"))
-	tcp_cfg.csum_offload = 0;
-      else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo,
-			 &tcp_cfg.cc_algo))
-	;
-      else if (unformat (input, "%U", unformat_tcp_cc_algo_cfg))
-	;
-      else if (unformat (input, "closewait-time %u", &tmp_time))
-	tcp_cfg.closewait_time = tmp_time / TCP_TIMER_TICK;
-      else if (unformat (input, "timewait-time %u", &tmp_time))
-	tcp_cfg.timewait_time = tmp_time / TCP_TIMER_TICK;
-      else if (unformat (input, "finwait1-time %u", &tmp_time))
-	tcp_cfg.finwait1_time = tmp_time / TCP_TIMER_TICK;
-      else if (unformat (input, "finwait2-time %u", &tmp_time))
-	tcp_cfg.finwait2_time = tmp_time / TCP_TIMER_TICK;
-      else if (unformat (input, "lastack-time %u", &tmp_time))
-	tcp_cfg.lastack_time = tmp_time / TCP_TIMER_TICK;
-      else if (unformat (input, "closing-time %u", &tmp_time))
-	tcp_cfg.closing_time = tmp_time / TCP_TIMER_TICK;
-      else if (unformat (input, "cleanup-time %u", &tmp_time))
-	tcp_cfg.cleanup_time = tmp_time / 1000.0;
-      else
-	return clib_error_return (0, "unknown input `%U'",
-				  format_unformat_error, input);
-    }
-  return 0;
-}
-
-VLIB_CONFIG_FUNCTION (tcp_config_fn, "tcp");
-
-
-/**
- * \brief Configure an ipv4 source address range
- * @param vm vlib_main_t pointer
- * @param start first ipv4 address in the source address range
- * @param end last ipv4 address in the source address range
- * @param table_id VRF / table ID, 0 for the default FIB
- * @return 0 if all OK, else an error indication from api_errno.h
- */
-
-int
-tcp_configure_v4_source_address_range (vlib_main_t * vm,
-				       ip4_address_t * start,
-				       ip4_address_t * end, u32 table_id)
-{
-  u32 start_host_byte_order, end_host_byte_order;
-  fib_prefix_t prefix;
-  fib_node_index_t fei;
-  u32 fib_index = 0;
-  u32 sw_if_index;
-  int rv;
-
-  clib_memset (&prefix, 0, sizeof (prefix));
-
-  fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id);
-
-  if (fib_index == ~0)
-    return VNET_API_ERROR_NO_SUCH_FIB;
-
-  start_host_byte_order = clib_net_to_host_u32 (start->as_u32);
-  end_host_byte_order = clib_net_to_host_u32 (end->as_u32);
-
-  /* sanity check for reversed args or some such */
-  if ((end_host_byte_order - start_host_byte_order) > (10 << 10))
-    return VNET_API_ERROR_INVALID_ARGUMENT;
-
-  /* Lookup the last address, to identify the interface involved */
-  prefix.fp_len = 32;
-  prefix.fp_proto = FIB_PROTOCOL_IP4;
-  memcpy (&prefix.fp_addr.ip4, end, sizeof (ip4_address_t));
-
-  fei = fib_table_lookup (fib_index, &prefix);
-
-  /* Couldn't find route to destination. Bail out. */
-  if (fei == FIB_NODE_INDEX_INVALID)
-    return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
-
-  sw_if_index = fib_entry_get_resolving_interface (fei);
-
-  /* Configure proxy arp across the range */
-  rv = ip4_neighbor_proxy_add (fib_index, start, end);
-
-  if (rv)
-    return rv;
-
-  rv = ip4_neighbor_proxy_enable (sw_if_index);
-
-  if (rv)
-    return rv;
-
-  do
-    {
-      dpo_id_t dpo = DPO_INVALID;
-
-      vec_add1 (tcp_cfg.ip4_src_addrs, start[0]);
-
-      /* Add local adjacencies for the range */
-
-      receive_dpo_add_or_lock (DPO_PROTO_IP4, ~0 /* sw_if_index */ ,
-			       NULL, &dpo);
-      prefix.fp_len = 32;
-      prefix.fp_proto = FIB_PROTOCOL_IP4;
-      prefix.fp_addr.ip4.as_u32 = start->as_u32;
-
-      fib_table_entry_special_dpo_update (fib_index,
-					  &prefix,
-					  FIB_SOURCE_API,
-					  FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
-      dpo_reset (&dpo);
-
-      start_host_byte_order++;
-      start->as_u32 = clib_host_to_net_u32 (start_host_byte_order);
-    }
-  while (start_host_byte_order <= end_host_byte_order);
-
-  return 0;
-}
-
-/**
- * \brief Configure an ipv6 source address range
- * @param vm vlib_main_t pointer
- * @param start first ipv6 address in the source address range
- * @param end last ipv6 address in the source address range
- * @param table_id VRF / table ID, 0 for the default FIB
- * @return 0 if all OK, else an error indication from api_errno.h
- */
-
-int
-tcp_configure_v6_source_address_range (vlib_main_t * vm,
-				       ip6_address_t * start,
-				       ip6_address_t * end, u32 table_id)
-{
-  fib_prefix_t prefix;
-  u32 fib_index = 0;
-  fib_node_index_t fei;
-  u32 sw_if_index;
-
-  clib_memset (&prefix, 0, sizeof (prefix));
-
-  fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id);
-
-  if (fib_index == ~0)
-    return VNET_API_ERROR_NO_SUCH_FIB;
-
-  while (1)
-    {
-      int i;
-      ip6_address_t tmp;
-      dpo_id_t dpo = DPO_INVALID;
-
-      /* Remember this address */
-      vec_add1 (tcp_cfg.ip6_src_addrs, start[0]);
-
-      /* Lookup the prefix, to identify the interface involved */
-      prefix.fp_len = 128;
-      prefix.fp_proto = FIB_PROTOCOL_IP6;
-      memcpy (&prefix.fp_addr.ip6, start, sizeof (ip6_address_t));
-
-      fei = fib_table_lookup (fib_index, &prefix);
-
-      /* Couldn't find route to destination. Bail out. */
-      if (fei == FIB_NODE_INDEX_INVALID)
-	return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
-
-      sw_if_index = fib_entry_get_resolving_interface (fei);
-
-      if (sw_if_index == (u32) ~ 0)
-	return VNET_API_ERROR_NO_MATCHING_INTERFACE;
-
-      /* Add a proxy neighbor discovery entry for this address */
-      ip6_neighbor_proxy_add (sw_if_index, start);
-
-      /* Add a receive adjacency for this address */
-      receive_dpo_add_or_lock (DPO_PROTO_IP6, ~0 /* sw_if_index */ ,
-			       NULL, &dpo);
-
-      fib_table_entry_special_dpo_update (fib_index,
-					  &prefix,
-					  FIB_SOURCE_API,
-					  FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
-      dpo_reset (&dpo);
-
-      /* Done with the entire range? */
-      if (!memcmp (start, end, sizeof (start[0])))
-	break;
-
-      /* Increment the address. DGMS. */
-      tmp = start[0];
-      for (i = 15; i >= 0; i--)
-	{
-	  tmp.as_u8[i] += 1;
-	  if (tmp.as_u8[i] != 0)
-	    break;
-	}
-      start[0] = tmp;
-    }
-  return 0;
-}
-
-static clib_error_t *
-tcp_src_address_fn (vlib_main_t * vm,
-		    unformat_input_t * input, vlib_cli_command_t * cmd_arg)
-{
-  ip4_address_t v4start, v4end;
-  ip6_address_t v6start, v6end;
-  u32 table_id = 0;
-  int v4set = 0;
-  int v6set = 0;
-  int rv;
-
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (input, "%U - %U", unformat_ip4_address, &v4start,
-		    unformat_ip4_address, &v4end))
-	v4set = 1;
-      else if (unformat (input, "%U", unformat_ip4_address, &v4start))
-	{
-	  memcpy (&v4end, &v4start, sizeof (v4start));
-	  v4set = 1;
-	}
-      else if (unformat (input, "%U - %U", unformat_ip6_address, &v6start,
-			 unformat_ip6_address, &v6end))
-	v6set = 1;
-      else if (unformat (input, "%U", unformat_ip6_address, &v6start))
-	{
-	  memcpy (&v6end, &v6start, sizeof (v6start));
-	  v6set = 1;
-	}
-      else if (unformat (input, "fib-table %d", &table_id))
-	;
-      else
-	break;
-    }
-
-  if (!v4set && !v6set)
-    return clib_error_return (0, "at least one v4 or v6 address required");
-
-  if (v4set)
-    {
-      rv = tcp_configure_v4_source_address_range (vm, &v4start, &v4end,
-						  table_id);
-      switch (rv)
-	{
-	case 0:
-	  break;
-
-	case VNET_API_ERROR_NO_SUCH_FIB:
-	  return clib_error_return (0, "Invalid table-id %d", table_id);
-
-	case VNET_API_ERROR_INVALID_ARGUMENT:
-	  return clib_error_return (0, "Invalid address range %U - %U",
-				    format_ip4_address, &v4start,
-				    format_ip4_address, &v4end);
-	default:
-	  return clib_error_return (0, "error %d", rv);
-	  break;
-	}
-    }
-  if (v6set)
-    {
-      rv = tcp_configure_v6_source_address_range (vm, &v6start, &v6end,
-						  table_id);
-      switch (rv)
-	{
-	case 0:
-	  break;
-
-	case VNET_API_ERROR_NO_SUCH_FIB:
-	  return clib_error_return (0, "Invalid table-id %d", table_id);
-
-	default:
-	  return clib_error_return (0, "error %d", rv);
-	  break;
-	}
-    }
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tcp_src_address_command, static) =
-{
-  .path = "tcp src-address",
-  .short_help = "tcp src-address <ip-addr> [- <ip-addr>] add src address range",
-  .function = tcp_src_address_fn,
-};
-/* *INDENT-ON* */
-
-static u8 *
-tcp_scoreboard_dump_trace (u8 * s, sack_scoreboard_t * sb)
-{
-#if TCP_SCOREBOARD_TRACE
-
-  scoreboard_trace_elt_t *block;
-  int i = 0;
-
-  if (!sb->trace)
-    return s;
-
-  s = format (s, "scoreboard trace:");
-  vec_foreach (block, sb->trace)
-  {
-    s = format (s, "{%u, %u, %u, %u, %u}, ", block->start, block->end,
-		block->ack, block->snd_una_max, block->group);
-    if ((++i % 3) == 0)
-      s = format (s, "\n");
-  }
-  return s;
-#else
-  return 0;
-#endif
-}
-
-static clib_error_t *
-tcp_show_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
-			      vlib_cli_command_t * cmd_arg)
-{
-  transport_connection_t *tconn = 0;
-  tcp_connection_t *tc;
-  u8 *s = 0;
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (input, "%U", unformat_transport_connection, &tconn,
-		    TRANSPORT_PROTO_TCP))
-	;
-      else
-	return clib_error_return (0, "unknown input `%U'",
-				  format_unformat_error, input);
-    }
-
-  if (!TCP_SCOREBOARD_TRACE)
-    {
-      vlib_cli_output (vm, "scoreboard tracing not enabled");
-      return 0;
-    }
-
-  tc = tcp_get_connection_from_transport (tconn);
-  s = tcp_scoreboard_dump_trace (s, &tc->sack_sb);
-  vlib_cli_output (vm, "%v", s);
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tcp_show_scoreboard_trace_command, static) =
-{
-  .path = "show tcp scoreboard trace",
-  .short_help = "show tcp scoreboard trace <connection>",
-  .function = tcp_show_scoreboard_trace_fn,
-};
-/* *INDENT-ON* */
-
-u8 *
-tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose)
-{
-  int i, trace_len;
-  scoreboard_trace_elt_t *trace;
-  u32 next_ack, left, group, has_new_ack = 0;
-  tcp_connection_t _dummy_tc, *dummy_tc = &_dummy_tc;
-  sack_block_t *block;
-
-  if (!TCP_SCOREBOARD_TRACE)
-    {
-      s = format (s, "scoreboard tracing not enabled");
-      return s;
-    }
-
-  if (!tc)
-    return s;
-
-  clib_memset (dummy_tc, 0, sizeof (*dummy_tc));
-  tcp_connection_timers_init (dummy_tc);
-  scoreboard_init (&dummy_tc->sack_sb);
-  dummy_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK;
-
-#if TCP_SCOREBOARD_TRACE
-  trace = tc->sack_sb.trace;
-  trace_len = vec_len (tc->sack_sb.trace);
-#endif
-
-  for (i = 0; i < trace_len; i++)
-    {
-      if (trace[i].ack != 0)
-	{
-	  dummy_tc->snd_una = trace[i].ack - 1448;
-	  dummy_tc->snd_una_max = trace[i].ack;
-	}
-    }
-
-  left = 0;
-  while (left < trace_len)
-    {
-      group = trace[left].group;
-      vec_reset_length (dummy_tc->rcv_opts.sacks);
-      has_new_ack = 0;
-      while (trace[left].group == group)
-	{
-	  if (trace[left].ack != 0)
-	    {
-	      if (verbose)
-		s = format (s, "Adding ack %u, snd_una_max %u, segs: ",
-			    trace[left].ack, trace[left].snd_una_max);
-	      dummy_tc->snd_una_max = trace[left].snd_una_max;
-	      next_ack = trace[left].ack;
-	      has_new_ack = 1;
-	    }
-	  else
-	    {
-	      if (verbose)
-		s = format (s, "[%u, %u], ", trace[left].start,
-			    trace[left].end);
-	      vec_add2 (dummy_tc->rcv_opts.sacks, block, 1);
-	      block->start = trace[left].start;
-	      block->end = trace[left].end;
-	    }
-	  left++;
-	}
-
-      /* Push segments */
-      tcp_rcv_sacks (dummy_tc, next_ack);
-      if (has_new_ack)
-	dummy_tc->snd_una = next_ack;
-
-      if (verbose)
-	s = format (s, "result: %U", format_tcp_scoreboard,
-		    &dummy_tc->sack_sb);
-
-    }
-  s = format (s, "result: %U", format_tcp_scoreboard, &dummy_tc->sack_sb);
-
-  return s;
-}
-
-static clib_error_t *
-tcp_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
-			 vlib_cli_command_t * cmd_arg)
-{
-  transport_connection_t *tconn = 0;
-  tcp_connection_t *tc = 0;
-  u8 *str = 0;
-  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    {
-      if (unformat (input, "%U", unformat_transport_connection, &tconn,
-		    TRANSPORT_PROTO_TCP))
-	;
-      else
-	return clib_error_return (0, "unknown input `%U'",
-				  format_unformat_error, input);
-    }
-
-  if (!TCP_SCOREBOARD_TRACE)
-    {
-      vlib_cli_output (vm, "scoreboard tracing not enabled");
-      return 0;
-    }
-
-  tc = tcp_get_connection_from_transport (tconn);
-  if (!tc)
-    {
-      vlib_cli_output (vm, "connection not found");
-      return 0;
-    }
-  str = tcp_scoreboard_replay (str, tc, 1);
-  vlib_cli_output (vm, "%v", str);
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (tcp_replay_scoreboard_command, static) =
-{
-  .path = "tcp replay scoreboard",
-  .short_help = "tcp replay scoreboard <connection>",
-  .function = tcp_scoreboard_trace_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-show_tcp_punt_fn (vlib_main_t * vm, unformat_input_t * input,
-		  vlib_cli_command_t * cmd_arg)
-{
-  tcp_main_t *tm = vnet_get_tcp_main ();
-  if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    return clib_error_return (0, "unknown input `%U'", format_unformat_error,
-			      input);
-  vlib_cli_output (vm, "IPv4 TCP punt: %s",
-		   tm->punt_unknown4 ? "enabled" : "disabled");
-  vlib_cli_output (vm, "IPv6 TCP punt: %s",
-		   tm->punt_unknown6 ? "enabled" : "disabled");
-  return 0;
-}
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_tcp_punt_command, static) =
-{
-  .path = "show tcp punt",
-  .short_help = "show tcp punt",
-  .function = show_tcp_punt_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-show_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
-		   vlib_cli_command_t * cmd)
-{
-  tcp_main_t *tm = vnet_get_tcp_main ();
-  tcp_worker_ctx_t *wrk;
-  u32 thread;
-
-  if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    return clib_error_return (0, "unknown input `%U'", format_unformat_error,
-			      input);
-  for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
-    {
-      wrk = tcp_get_worker (thread);
-      vlib_cli_output (vm, "Thread %u:\n", thread);
-
-      if (clib_fifo_elts (wrk->pending_timers))
-	vlib_cli_output (vm, " %lu pending timers",
-			 clib_fifo_elts (wrk->pending_timers));
-
-#define _(name,type,str)					\
-  if (wrk->stats.name)						\
-    vlib_cli_output (vm, " %lu %s", wrk->stats.name, str);
-      foreach_tcp_wrk_stat
-#undef _
-    }
-
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (show_tcp_stats_command, static) =
-{
-  .path = "show tcp stats",
-  .short_help = "show tcp stats",
-  .function = show_tcp_stats_fn,
-};
-/* *INDENT-ON* */
-
-static clib_error_t *
-clear_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
-		    vlib_cli_command_t * cmd)
-{
-  tcp_main_t *tm = vnet_get_tcp_main ();
-  tcp_worker_ctx_t *wrk;
-  u32 thread;
-
-  if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
-    return clib_error_return (0, "unknown input `%U'", format_unformat_error,
-			      input);
-
-  for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
-    {
-      wrk = tcp_get_worker (thread);
-      clib_memset (&wrk->stats, 0, sizeof (wrk->stats));
-    }
-
-  return 0;
-}
-
-/* *INDENT-OFF* */
-VLIB_CLI_COMMAND (clear_tcp_stats_command, static) =
-{
-  .path = "clear tcp stats",
-  .short_help = "clear tcp stats",
-  .function = clear_tcp_stats_fn,
-};
-/* *INDENT-ON* */
-
 /*
  * fd.io coding-style-patch-verification: ON
  *