2 * Copyright (c) 2020 Cisco and/or its affiliates.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at:
7 * http://www.apache.org/licenses/LICENSE-2.0
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
16 #include <vnet/tcp/tcp.h>
17 #include <vnet/tcp/tcp_inlines.h>
18 #include <vnet/dpo/receive_dpo.h>
19 #include <vnet/ip-neighbor/ip_neighbor.h>
21 const char *tcp_fsm_states[] = {
22 #define _(sym, str) str,
28 format_tcp_state (u8 * s, va_list * args)
30 u32 state = va_arg (*args, u32);
32 if (state < TCP_N_STATES)
33 s = format (s, "%s", tcp_fsm_states[state]);
35 s = format (s, "UNKNOWN (%d (0x%x))", state, state);
39 const char *tcp_cfg_flags_str[] = {
40 #define _(sym, str) str,
46 format_tcp_cfg_flags (u8 * s, va_list * args)
48 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
51 for (i = 0; i < TCP_CFG_N_FLAG_BITS; i++)
52 if (tc->cfg_flags & (1 << i))
54 for (i = 0; i < last; i++)
56 if (tc->cfg_flags & (1 << i))
57 s = format (s, "%s, ", tcp_cfg_flags_str[i]);
60 s = format (s, "%s", tcp_cfg_flags_str[last]);
64 const char *tcp_connection_flags_str[] = {
65 #define _(sym, str) str,
66 foreach_tcp_connection_flag
71 format_tcp_connection_flags (u8 * s, va_list * args)
73 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
76 for (i = 0; i < TCP_CONN_N_FLAG_BITS; i++)
77 if (tc->flags & (1 << i))
79 for (i = 0; i < last; i++)
81 if (tc->flags & (1 << i))
82 s = format (s, "%s, ", tcp_connection_flags_str[i]);
85 s = format (s, "%s", tcp_connection_flags_str[last]);
89 const char *tcp_conn_timers[] = {
90 #define _(sym, str) str,
96 format_tcp_timers (u8 * s, va_list * args)
98 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
101 for (i = 0; i < TCP_N_TIMERS; i++)
102 if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
105 for (i = 0; i < last; i++)
107 if (tc->timers[i] != TCP_TIMER_HANDLE_INVALID)
108 s = format (s, "%s,", tcp_conn_timers[i]);
112 s = format (s, "%s", tcp_conn_timers[i]);
118 format_tcp_congestion_status (u8 * s, va_list * args)
120 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
121 if (tcp_in_recovery (tc))
122 s = format (s, "recovery");
123 else if (tcp_in_fastrecovery (tc))
124 s = format (s, "fastrecovery");
126 s = format (s, "none");
131 tcp_rcv_wnd_available (tcp_connection_t * tc)
133 return (i32) tc->rcv_wnd - (tc->rcv_nxt - tc->rcv_las);
137 format_tcp_congestion (u8 * s, va_list * args)
139 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
140 u32 indent = format_get_indent (s), prr_space = 0;
142 s = format (s, "%U ", format_tcp_congestion_status, tc);
143 s = format (s, "algo %s cwnd %u ssthresh %u bytes_acked %u\n",
144 tc->cc_algo->name, tc->cwnd, tc->ssthresh, tc->bytes_acked);
145 s = format (s, "%Ucc space %u prev_cwnd %u prev_ssthresh %u\n",
146 format_white_space, indent, tcp_available_cc_snd_space (tc),
147 tc->prev_cwnd, tc->prev_ssthresh);
148 s = format (s, "%Usnd_cong %u dupack %u limited_tx %u\n",
149 format_white_space, indent, tc->snd_congestion - tc->iss,
150 tc->rcv_dupacks, tc->limited_transmit - tc->iss);
151 s = format (s, "%Urxt_bytes %u rxt_delivered %u rxt_head %u rxt_ts %u\n",
152 format_white_space, indent, tc->snd_rxt_bytes,
153 tc->rxt_delivered, tc->rxt_head - tc->iss,
154 tcp_time_now_w_thread (tc->c_thread_index) - tc->snd_rxt_ts);
155 if (tcp_in_fastrecovery (tc))
156 prr_space = tcp_fastrecovery_prr_snd_space (tc);
157 s = format (s, "%Uprr_start %u prr_delivered %u prr space %u\n",
158 format_white_space, indent, tc->prr_start - tc->iss,
159 tc->prr_delivered, prr_space);
164 format_tcp_stats (u8 * s, va_list * args)
166 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
167 u32 indent = format_get_indent (s);
168 s = format (s, "in segs %lu dsegs %lu bytes %lu dupacks %u\n",
169 tc->segs_in, tc->data_segs_in, tc->bytes_in, tc->dupacks_in);
170 s = format (s, "%Uout segs %lu dsegs %lu bytes %lu dupacks %u\n",
171 format_white_space, indent, tc->segs_out,
172 tc->data_segs_out, tc->bytes_out, tc->dupacks_out);
173 s = format (s, "%Ufr %u tr %u rxt segs %lu bytes %lu duration %.3f\n",
174 format_white_space, indent, tc->fr_occurences,
175 tc->tr_occurences, tc->segs_retrans, tc->bytes_retrans,
176 tcp_time_now_us (tc->c_thread_index) - tc->start_ts);
177 s = format (s, "%Uerr wnd data below %u above %u ack below %u above %u",
178 format_white_space, indent, tc->errors.below_data_wnd,
179 tc->errors.above_data_wnd, tc->errors.below_ack_wnd,
180 tc->errors.above_ack_wnd);
185 format_tcp_vars (u8 * s, va_list * args)
187 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
188 s = format (s, " index: %u cfg: %U flags: %U timers: %U\n", tc->c_c_index,
189 format_tcp_cfg_flags, tc, format_tcp_connection_flags, tc,
190 format_tcp_timers, tc);
191 s = format (s, " snd_una %u snd_nxt %u snd_una_max %u",
192 tc->snd_una - tc->iss, tc->snd_nxt - tc->iss,
193 tc->snd_una_max - tc->iss);
194 s = format (s, " rcv_nxt %u rcv_las %u\n",
195 tc->rcv_nxt - tc->irs, tc->rcv_las - tc->irs);
196 s = format (s, " snd_wnd %u rcv_wnd %u rcv_wscale %u ",
197 tc->snd_wnd, tc->rcv_wnd, tc->rcv_wscale);
198 s = format (s, "snd_wl1 %u snd_wl2 %u\n", tc->snd_wl1 - tc->irs,
199 tc->snd_wl2 - tc->iss);
200 s = format (s, " flight size %u out space %u rcv_wnd_av %u",
201 tcp_flight_size (tc), tcp_available_output_snd_space (tc),
202 tcp_rcv_wnd_available (tc));
203 s = format (s, " tsval_recent %u\n", tc->tsval_recent);
204 s = format (s, " tsecr %u tsecr_last_ack %u tsval_recent_age %u",
205 tc->rcv_opts.tsecr, tc->tsecr_last_ack,
206 tcp_time_now () - tc->tsval_recent_age);
207 s = format (s, " snd_mss %u\n", tc->snd_mss);
208 s = format (s, " rto %u rto_boff %u srtt %.1f us %.3f rttvar %.1f",
209 tc->rto / 1000, tc->rto_boff, tc->srtt / 1000.0,
210 tc->mrtt_us * 1e3, tc->rttvar / 1000.0);
211 s = format (s, " rtt_ts %.4f rtt_seq %u\n", tc->rtt_ts,
212 tc->rtt_seq - tc->iss);
213 s = format (s, " next_node %u opaque 0x%x fib_index %u\n",
214 tc->next_node_index, tc->next_node_opaque, tc->c_fib_index);
215 s = format (s, " cong: %U", format_tcp_congestion, tc);
217 if (tc->state >= TCP_STATE_ESTABLISHED)
219 s = format (s, " sboard: %U\n", format_tcp_scoreboard, &tc->sack_sb,
221 s = format (s, " stats: %U\n", format_tcp_stats, tc);
223 if (vec_len (tc->snd_sacks))
224 s = format (s, " sacks tx: %U\n", format_tcp_sacks, tc);
230 format_tcp_connection_id (u8 * s, va_list * args)
232 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
237 s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
238 tc->c_s_index, "T", format_ip4_address, &tc->c_lcl_ip4,
239 clib_net_to_host_u16 (tc->c_lcl_port), format_ip4_address,
240 &tc->c_rmt_ip4, clib_net_to_host_u16 (tc->c_rmt_port));
244 s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
245 tc->c_s_index, "T", format_ip6_address, &tc->c_lcl_ip6,
246 clib_net_to_host_u16 (tc->c_lcl_port), format_ip6_address,
247 &tc->c_rmt_ip6, clib_net_to_host_u16 (tc->c_rmt_port));
254 format_tcp_connection (u8 * s, va_list * args)
256 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
257 u32 verbose = va_arg (*args, u32);
261 s = format (s, "%-50U", format_tcp_connection_id, tc);
264 s = format (s, "%-15U", format_tcp_state, tc->state);
266 s = format (s, "\n%U", format_tcp_vars, tc);
273 format_tcp_sacks (u8 * s, va_list * args)
275 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
276 sack_block_t *sacks = tc->snd_sacks;
280 len = vec_len (sacks);
281 for (i = 0; i < len - 1; i++)
284 s = format (s, " start %u end %u\n", block->start - tc->irs,
285 block->end - tc->irs);
289 block = &sacks[len - 1];
290 s = format (s, " start %u end %u", block->start - tc->irs,
291 block->end - tc->irs);
297 format_tcp_rcv_sacks (u8 * s, va_list * args)
299 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
300 sack_block_t *sacks = tc->rcv_opts.sacks;
304 len = vec_len (sacks);
305 for (i = 0; i < len - 1; i++)
308 s = format (s, " start %u end %u\n", block->start - tc->iss,
309 block->end - tc->iss);
313 block = &sacks[len - 1];
314 s = format (s, " start %u end %u", block->start - tc->iss,
315 block->end - tc->iss);
321 format_tcp_sack_hole (u8 * s, va_list * args)
323 sack_scoreboard_hole_t *hole = va_arg (*args, sack_scoreboard_hole_t *);
324 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
326 s = format (s, " [%u, %u]", hole->start - tc->iss, hole->end - tc->iss);
328 s = format (s, " [%u, %u]", hole->start, hole->end);
333 format_tcp_scoreboard (u8 * s, va_list * args)
335 sack_scoreboard_t *sb = va_arg (*args, sack_scoreboard_t *);
336 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
337 sack_scoreboard_hole_t *hole;
338 u32 indent = format_get_indent (s);
340 s = format (s, "sacked %u last_sacked %u lost %u last_lost %u"
342 sb->sacked_bytes, sb->last_sacked_bytes, sb->lost_bytes,
343 sb->last_lost_bytes, sb->rxt_sacked);
344 s = format (s, "%Ulast_delivered %u high_sacked %u is_reneging %u",
345 format_white_space, indent, sb->last_bytes_delivered,
346 sb->high_sacked - tc->iss, sb->is_reneging);
347 s = format (s, " reorder %u\n", sb->reorder);
348 s = format (s, "%Ucur_rxt_hole %u high_rxt %u rescue_rxt %u",
349 format_white_space, indent, sb->cur_rxt_hole,
350 sb->high_rxt - tc->iss, sb->rescue_rxt - tc->iss);
352 hole = scoreboard_first_hole (sb);
354 s = format (s, "\n%Uhead %u tail %u %u holes:\n%U", format_white_space,
355 indent, sb->head, sb->tail, pool_elts (sb->holes),
356 format_white_space, indent);
360 s = format (s, "%U", format_tcp_sack_hole, hole, tc);
361 hole = scoreboard_next_hole (sb, hole);
368 * \brief Configure an ipv4 source address range
369 * @param vm vlib_main_t pointer
370 * @param start first ipv4 address in the source address range
371 * @param end last ipv4 address in the source address range
372 * @param table_id VRF / table ID, 0 for the default FIB
373 * @return 0 if all OK, else an error indication from api_errno.h
377 tcp_configure_v4_source_address_range (vlib_main_t * vm,
378 ip4_address_t * start,
379 ip4_address_t * end, u32 table_id)
381 u32 start_host_byte_order, end_host_byte_order;
383 fib_node_index_t fei;
388 clib_memset (&prefix, 0, sizeof (prefix));
390 fib_index = fib_table_find (FIB_PROTOCOL_IP4, table_id);
393 return VNET_API_ERROR_NO_SUCH_FIB;
395 start_host_byte_order = clib_net_to_host_u32 (start->as_u32);
396 end_host_byte_order = clib_net_to_host_u32 (end->as_u32);
398 /* sanity check for reversed args or some such */
399 if ((end_host_byte_order - start_host_byte_order) > (10 << 10))
400 return VNET_API_ERROR_INVALID_ARGUMENT;
402 /* Lookup the last address, to identify the interface involved */
404 prefix.fp_proto = FIB_PROTOCOL_IP4;
405 memcpy (&prefix.fp_addr.ip4, end, sizeof (ip4_address_t));
407 fei = fib_table_lookup (fib_index, &prefix);
409 /* Couldn't find route to destination. Bail out. */
410 if (fei == FIB_NODE_INDEX_INVALID)
411 return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
413 sw_if_index = fib_entry_get_resolving_interface (fei);
415 /* Configure proxy arp across the range */
416 rv = ip4_neighbor_proxy_add (fib_index, start, end);
421 rv = ip4_neighbor_proxy_enable (sw_if_index);
428 dpo_id_t dpo = DPO_INVALID;
430 vec_add1 (tcp_cfg.ip4_src_addrs, start[0]);
432 /* Add local adjacencies for the range */
434 receive_dpo_add_or_lock (DPO_PROTO_IP4, ~0 /* sw_if_index */ ,
437 prefix.fp_proto = FIB_PROTOCOL_IP4;
438 prefix.fp_addr.ip4.as_u32 = start->as_u32;
440 fib_table_entry_special_dpo_update (fib_index,
443 FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
446 start_host_byte_order++;
447 start->as_u32 = clib_host_to_net_u32 (start_host_byte_order);
449 while (start_host_byte_order <= end_host_byte_order);
455 * \brief Configure an ipv6 source address range
456 * @param vm vlib_main_t pointer
457 * @param start first ipv6 address in the source address range
458 * @param end last ipv6 address in the source address range
459 * @param table_id VRF / table ID, 0 for the default FIB
460 * @return 0 if all OK, else an error indication from api_errno.h
464 tcp_configure_v6_source_address_range (vlib_main_t * vm,
465 ip6_address_t * start,
466 ip6_address_t * end, u32 table_id)
470 fib_node_index_t fei;
473 clib_memset (&prefix, 0, sizeof (prefix));
475 fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id);
478 return VNET_API_ERROR_NO_SUCH_FIB;
484 dpo_id_t dpo = DPO_INVALID;
486 /* Remember this address */
487 vec_add1 (tcp_cfg.ip6_src_addrs, start[0]);
489 /* Lookup the prefix, to identify the interface involved */
491 prefix.fp_proto = FIB_PROTOCOL_IP6;
492 memcpy (&prefix.fp_addr.ip6, start, sizeof (ip6_address_t));
494 fei = fib_table_lookup (fib_index, &prefix);
496 /* Couldn't find route to destination. Bail out. */
497 if (fei == FIB_NODE_INDEX_INVALID)
498 return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
500 sw_if_index = fib_entry_get_resolving_interface (fei);
502 if (sw_if_index == (u32) ~ 0)
503 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
505 /* Add a proxy neighbor discovery entry for this address */
506 ip6_neighbor_proxy_add (sw_if_index, start);
508 /* Add a receive adjacency for this address */
509 receive_dpo_add_or_lock (DPO_PROTO_IP6, ~0 /* sw_if_index */ ,
512 fib_table_entry_special_dpo_update (fib_index,
515 FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
518 /* Done with the entire range? */
519 if (!memcmp (start, end, sizeof (start[0])))
522 /* Increment the address. DGMS. */
524 for (i = 15; i >= 0; i--)
527 if (tmp.as_u8[i] != 0)
535 static clib_error_t *
536 tcp_src_address_fn (vlib_main_t * vm,
537 unformat_input_t * input, vlib_cli_command_t * cmd_arg)
539 ip4_address_t v4start, v4end;
540 ip6_address_t v6start, v6end;
546 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
548 if (unformat (input, "%U - %U", unformat_ip4_address, &v4start,
549 unformat_ip4_address, &v4end))
551 else if (unformat (input, "%U", unformat_ip4_address, &v4start))
553 memcpy (&v4end, &v4start, sizeof (v4start));
556 else if (unformat (input, "%U - %U", unformat_ip6_address, &v6start,
557 unformat_ip6_address, &v6end))
559 else if (unformat (input, "%U", unformat_ip6_address, &v6start))
561 memcpy (&v6end, &v6start, sizeof (v6start));
564 else if (unformat (input, "fib-table %d", &table_id))
570 if (!v4set && !v6set)
571 return clib_error_return (0, "at least one v4 or v6 address required");
575 rv = tcp_configure_v4_source_address_range (vm, &v4start, &v4end,
582 case VNET_API_ERROR_NO_SUCH_FIB:
583 return clib_error_return (0, "Invalid table-id %d", table_id);
585 case VNET_API_ERROR_INVALID_ARGUMENT:
586 return clib_error_return (0, "Invalid address range %U - %U",
587 format_ip4_address, &v4start,
588 format_ip4_address, &v4end);
590 return clib_error_return (0, "error %d", rv);
596 rv = tcp_configure_v6_source_address_range (vm, &v6start, &v6end,
603 case VNET_API_ERROR_NO_SUCH_FIB:
604 return clib_error_return (0, "Invalid table-id %d", table_id);
607 return clib_error_return (0, "error %d", rv);
615 VLIB_CLI_COMMAND (tcp_src_address_command, static) =
617 .path = "tcp src-address",
618 .short_help = "tcp src-address <ip-addr> [- <ip-addr>] add src address range",
619 .function = tcp_src_address_fn,
624 tcp_scoreboard_dump_trace (u8 * s, sack_scoreboard_t * sb)
626 #if TCP_SCOREBOARD_TRACE
628 scoreboard_trace_elt_t *block;
634 s = format (s, "scoreboard trace:");
635 vec_foreach (block, sb->trace)
637 s = format (s, "{%u, %u, %u, %u, %u}, ", block->start, block->end,
638 block->ack, block->snd_una_max, block->group);
640 s = format (s, "\n");
648 static clib_error_t *
649 tcp_show_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
650 vlib_cli_command_t * cmd_arg)
652 transport_connection_t *tconn = 0;
653 tcp_connection_t *tc;
655 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
657 if (unformat (input, "%U", unformat_transport_connection, &tconn,
658 TRANSPORT_PROTO_TCP))
661 return clib_error_return (0, "unknown input `%U'",
662 format_unformat_error, input);
665 if (!TCP_SCOREBOARD_TRACE)
667 vlib_cli_output (vm, "scoreboard tracing not enabled");
671 tc = tcp_get_connection_from_transport (tconn);
672 s = tcp_scoreboard_dump_trace (s, &tc->sack_sb);
673 vlib_cli_output (vm, "%v", s);
678 VLIB_CLI_COMMAND (tcp_show_scoreboard_trace_command, static) =
680 .path = "show tcp scoreboard trace",
681 .short_help = "show tcp scoreboard trace <connection>",
682 .function = tcp_show_scoreboard_trace_fn,
687 tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose)
690 scoreboard_trace_elt_t *trace;
691 u32 next_ack, left, group, has_new_ack = 0;
692 tcp_connection_t _placeholder_tc, *placeholder_tc = &_placeholder_tc;
695 if (!TCP_SCOREBOARD_TRACE)
697 s = format (s, "scoreboard tracing not enabled");
704 clib_memset (placeholder_tc, 0, sizeof (*placeholder_tc));
705 tcp_connection_timers_init (placeholder_tc);
706 scoreboard_init (&placeholder_tc->sack_sb);
707 placeholder_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK;
709 #if TCP_SCOREBOARD_TRACE
710 trace = tc->sack_sb.trace;
711 trace_len = vec_len (tc->sack_sb.trace);
714 for (i = 0; i < trace_len; i++)
716 if (trace[i].ack != 0)
718 placeholder_tc->snd_una = trace[i].ack - 1448;
719 placeholder_tc->snd_una_max = trace[i].ack;
724 while (left < trace_len)
726 group = trace[left].group;
727 vec_reset_length (placeholder_tc->rcv_opts.sacks);
729 while (trace[left].group == group)
731 if (trace[left].ack != 0)
734 s = format (s, "Adding ack %u, snd_una_max %u, segs: ",
735 trace[left].ack, trace[left].snd_una_max);
736 placeholder_tc->snd_una_max = trace[left].snd_una_max;
737 next_ack = trace[left].ack;
743 s = format (s, "[%u, %u], ", trace[left].start,
745 vec_add2 (placeholder_tc->rcv_opts.sacks, block, 1);
746 block->start = trace[left].start;
747 block->end = trace[left].end;
753 tcp_rcv_sacks (placeholder_tc, next_ack);
755 placeholder_tc->snd_una = next_ack;
758 s = format (s, "result: %U", format_tcp_scoreboard,
759 &placeholder_tc->sack_sb);
763 format (s, "result: %U", format_tcp_scoreboard, &placeholder_tc->sack_sb);
768 static clib_error_t *
769 tcp_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
770 vlib_cli_command_t * cmd_arg)
772 transport_connection_t *tconn = 0;
773 tcp_connection_t *tc = 0;
775 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
777 if (unformat (input, "%U", unformat_transport_connection, &tconn,
778 TRANSPORT_PROTO_TCP))
781 return clib_error_return (0, "unknown input `%U'",
782 format_unformat_error, input);
785 if (!TCP_SCOREBOARD_TRACE)
787 vlib_cli_output (vm, "scoreboard tracing not enabled");
791 tc = tcp_get_connection_from_transport (tconn);
794 vlib_cli_output (vm, "connection not found");
797 str = tcp_scoreboard_replay (str, tc, 1);
798 vlib_cli_output (vm, "%v", str);
803 VLIB_CLI_COMMAND (tcp_replay_scoreboard_command, static) =
805 .path = "tcp replay scoreboard",
806 .short_help = "tcp replay scoreboard <connection>",
807 .function = tcp_scoreboard_trace_fn,
811 static clib_error_t *
812 show_tcp_punt_fn (vlib_main_t * vm, unformat_input_t * input,
813 vlib_cli_command_t * cmd_arg)
815 tcp_main_t *tm = vnet_get_tcp_main ();
816 if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
817 return clib_error_return (0, "unknown input `%U'", format_unformat_error,
819 vlib_cli_output (vm, "IPv4 TCP punt: %s",
820 tm->punt_unknown4 ? "enabled" : "disabled");
821 vlib_cli_output (vm, "IPv6 TCP punt: %s",
822 tm->punt_unknown6 ? "enabled" : "disabled");
826 VLIB_CLI_COMMAND (show_tcp_punt_command, static) =
828 .path = "show tcp punt",
829 .short_help = "show tcp punt",
830 .function = show_tcp_punt_fn,
834 static clib_error_t *
835 show_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
836 vlib_cli_command_t * cmd)
838 tcp_main_t *tm = vnet_get_tcp_main ();
839 tcp_worker_ctx_t *wrk;
842 if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
843 return clib_error_return (0, "unknown input `%U'", format_unformat_error,
845 for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
847 wrk = tcp_get_worker (thread);
848 vlib_cli_output (vm, "Thread %u:\n", thread);
850 if (clib_fifo_elts (wrk->pending_timers))
851 vlib_cli_output (vm, " %lu pending timers",
852 clib_fifo_elts (wrk->pending_timers));
854 #define _(name,type,str) \
855 if (wrk->stats.name) \
856 vlib_cli_output (vm, " %lu %s", wrk->stats.name, str);
865 VLIB_CLI_COMMAND (show_tcp_stats_command, static) =
867 .path = "show tcp stats",
868 .short_help = "show tcp stats",
869 .function = show_tcp_stats_fn,
873 static clib_error_t *
874 clear_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
875 vlib_cli_command_t * cmd)
877 tcp_main_t *tm = vnet_get_tcp_main ();
878 tcp_worker_ctx_t *wrk;
881 if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
882 return clib_error_return (0, "unknown input `%U'", format_unformat_error,
885 for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
887 wrk = tcp_get_worker (thread);
888 clib_memset (&wrk->stats, 0, sizeof (wrk->stats));
895 VLIB_CLI_COMMAND (clear_tcp_stats_command, static) =
897 .path = "clear tcp stats",
898 .short_help = "clear tcp stats",
899 .function = clear_tcp_stats_fn,
904 tcp_show_half_open (vlib_main_t * vm, u32 start, u32 end, u8 verbose)
906 tcp_main_t *tm = &tcp_main;
907 u8 output_suppressed = 0;
908 u32 n_elts, count = 0;
909 tcp_connection_t *tc;
912 n_elts = pool_elts (tm->half_open_connections);
913 max_index = clib_max (pool_len (tm->half_open_connections), 1) - 1;
914 if (verbose && end == ~0 && n_elts > 50)
916 vlib_cli_output (vm, "Too many connections, use range <start> <end>");
922 vlib_cli_output (vm, "%u tcp half-open connections", n_elts);
926 for (i = start; i <= clib_min (end, max_index); i++)
928 if (pool_is_free_index (tm->half_open_connections, i))
931 tc = pool_elt_at_index (tm->half_open_connections, i);
936 if (count > 50 || (verbose > 1 && count > 10))
938 output_suppressed = 1;
942 vlib_cli_output (vm, "%U", format_tcp_connection, tc, verbose);
944 if (!output_suppressed)
945 vlib_cli_output (vm, "%u tcp half-open connections", n_elts);
947 vlib_cli_output (vm, "%u tcp half-open connections matched. Output "
948 "suppressed. Use finer grained filter.", count);
952 static clib_error_t *
953 show_tcp_half_open_fn (vlib_main_t * vm, unformat_input_t * input,
954 vlib_cli_command_t * cmd)
956 unformat_input_t _line_input, *line_input = &_line_input;
957 u32 start, end = ~0, verbose = 0;
958 clib_error_t *error = 0;
960 session_cli_return_if_not_enabled ();
962 if (!unformat_user (input, unformat_line_input, line_input))
964 tcp_show_half_open (vm, 0, ~0, 0);
968 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
970 if (unformat (line_input, "range %u %u", &start, &end))
972 else if (unformat (line_input, "verbose %d", &verbose))
974 else if (unformat (line_input, "verbose"))
978 error = clib_error_return (0, "unknown input `%U'",
979 format_unformat_error, input);
986 error = clib_error_return (0, "invalid range start: %u end: %u", start,
991 tcp_show_half_open (vm, start, end, verbose);
994 unformat_free (line_input);
999 VLIB_CLI_COMMAND (show_tcp_half_open_command, static) =
1001 .path = "show tcp half-open",
1002 .short_help = "show tcp half-open [verbose <n>] [range <start> <end>]",
1003 .function = show_tcp_half_open_fn,
1008 unformat_tcp_cc_algo (unformat_input_t * input, va_list * va)
1010 tcp_cc_algorithm_type_e *result = va_arg (*va, tcp_cc_algorithm_type_e *);
1011 tcp_main_t *tm = &tcp_main;
1016 if (unformat (input, "%s", &cc_algo_name)
1017 && ((p = hash_get_mem (tm->cc_algo_by_name, cc_algo_name))))
1023 vec_free (cc_algo_name);
1028 unformat_tcp_cc_algo_cfg (unformat_input_t * input, va_list * va)
1030 tcp_main_t *tm = vnet_get_tcp_main ();
1031 tcp_cc_algorithm_t *cc_alg;
1032 unformat_input_t sub_input;
1035 vec_foreach (cc_alg, tm->cc_algos)
1037 if (!unformat (input, cc_alg->name))
1040 if (cc_alg->unformat_cfg
1041 && unformat (input, "%U", unformat_vlib_cli_sub_input, &sub_input))
1043 if (cc_alg->unformat_cfg (&sub_input))
1050 static clib_error_t *
1051 tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
1053 u32 cwnd_multiplier, tmp_time, mtu;
1056 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
1058 if (unformat (input, "preallocated-connections %d",
1059 &tcp_cfg.preallocated_connections))
1061 else if (unformat (input, "preallocated-half-open-connections %d",
1062 &tcp_cfg.preallocated_half_open_connections))
1064 else if (unformat (input, "buffer-fail-fraction %f",
1065 &tcp_cfg.buffer_fail_fraction))
1067 else if (unformat (input, "max-rx-fifo %U", unformat_memory_size,
1070 if (memory_size >= 0x100000000)
1072 return clib_error_return
1073 (0, "max-rx-fifo %llu (0x%llx) too large", memory_size,
1076 tcp_cfg.max_rx_fifo = memory_size;
1078 else if (unformat (input, "min-rx-fifo %U", unformat_memory_size,
1081 if (memory_size >= 0x100000000)
1083 return clib_error_return
1084 (0, "min-rx-fifo %llu (0x%llx) too large", memory_size,
1087 tcp_cfg.min_rx_fifo = memory_size;
1089 else if (unformat (input, "mtu %u", &mtu))
1090 tcp_cfg.default_mtu = mtu;
1091 else if (unformat (input, "rwnd-min-update-ack %d",
1092 &tcp_cfg.rwnd_min_update_ack))
1094 else if (unformat (input, "initial-cwnd-multiplier %u",
1096 tcp_cfg.initial_cwnd_multiplier = cwnd_multiplier;
1097 else if (unformat (input, "no-tx-pacing"))
1098 tcp_cfg.enable_tx_pacing = 0;
1099 else if (unformat (input, "tso"))
1100 tcp_cfg.allow_tso = 1;
1101 else if (unformat (input, "no-csum-offload"))
1102 tcp_cfg.csum_offload = 0;
1103 else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo,
1106 else if (unformat (input, "%U", unformat_tcp_cc_algo_cfg))
1108 else if (unformat (input, "closewait-time %u", &tmp_time))
1109 tcp_cfg.closewait_time = tmp_time / TCP_TIMER_TICK;
1110 else if (unformat (input, "timewait-time %u", &tmp_time))
1111 tcp_cfg.timewait_time = tmp_time / TCP_TIMER_TICK;
1112 else if (unformat (input, "finwait1-time %u", &tmp_time))
1113 tcp_cfg.finwait1_time = tmp_time / TCP_TIMER_TICK;
1114 else if (unformat (input, "finwait2-time %u", &tmp_time))
1115 tcp_cfg.finwait2_time = tmp_time / TCP_TIMER_TICK;
1116 else if (unformat (input, "lastack-time %u", &tmp_time))
1117 tcp_cfg.lastack_time = tmp_time / TCP_TIMER_TICK;
1118 else if (unformat (input, "closing-time %u", &tmp_time))
1119 tcp_cfg.closing_time = tmp_time / TCP_TIMER_TICK;
1120 else if (unformat (input, "cleanup-time %u", &tmp_time))
1121 tcp_cfg.cleanup_time = tmp_time / 1000.0;
1123 return clib_error_return (0, "unknown input `%U'",
1124 format_unformat_error, input);
1129 VLIB_CONFIG_FUNCTION (tcp_config_fn, "tcp");
1132 * fd.io coding-style-patch-verification: ON
1135 * eval: (c-set-style "gnu")