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, tc->rxt_delivered,
153 tc->rxt_head - tc->iss, tcp_tstamp (tc) - tc->snd_rxt_ts);
154 if (tcp_in_fastrecovery (tc))
155 prr_space = tcp_fastrecovery_prr_snd_space (tc);
156 s = format (s, "%Uprr_start %u prr_delivered %u prr space %u\n",
157 format_white_space, indent, tc->prr_start - tc->iss,
158 tc->prr_delivered, prr_space);
163 format_tcp_stats (u8 * s, va_list * args)
165 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
166 u32 indent = format_get_indent (s);
167 s = format (s, "in segs %lu dsegs %lu bytes %lu dupacks %u\n",
168 tc->segs_in, tc->data_segs_in, tc->bytes_in, tc->dupacks_in);
169 s = format (s, "%Uout segs %lu dsegs %lu bytes %lu dupacks %u\n",
170 format_white_space, indent, tc->segs_out,
171 tc->data_segs_out, tc->bytes_out, tc->dupacks_out);
172 s = format (s, "%Ufr %u tr %u rxt segs %lu bytes %lu duration %.3f\n",
173 format_white_space, indent, tc->fr_occurences,
174 tc->tr_occurences, tc->segs_retrans, tc->bytes_retrans,
175 tcp_time_now_us (tc->c_thread_index) - tc->start_ts);
176 s = format (s, "%Uerr wnd data below %u above %u ack below %u above %u",
177 format_white_space, indent, tc->errors.below_data_wnd,
178 tc->errors.above_data_wnd, tc->errors.below_ack_wnd,
179 tc->errors.above_ack_wnd);
184 format_tcp_vars (u8 * s, va_list * args)
186 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
187 s = format (s, " index: %u cfg: %U flags: %U timers: %U\n", tc->c_c_index,
188 format_tcp_cfg_flags, tc, format_tcp_connection_flags, tc,
189 format_tcp_timers, tc);
190 s = format (s, " snd_una %u snd_nxt %u", tc->snd_una - tc->iss,
191 tc->snd_nxt - tc->iss);
192 s = format (s, " rcv_nxt %u rcv_las %u\n",
193 tc->rcv_nxt - tc->irs, tc->rcv_las - tc->irs);
194 s = format (s, " snd_wnd %u rcv_wnd %u rcv_wscale %u ",
195 tc->snd_wnd, tc->rcv_wnd, tc->rcv_wscale);
196 s = format (s, "snd_wl1 %u snd_wl2 %u\n", tc->snd_wl1 - tc->irs,
197 tc->snd_wl2 - tc->iss);
198 s = format (s, " flight size %u out space %u rcv_wnd_av %u",
199 tcp_flight_size (tc), tcp_available_output_snd_space (tc),
200 tcp_rcv_wnd_available (tc));
201 s = format (s, " tsval_recent %u\n", tc->tsval_recent);
202 s = format (s, " tsecr %u tsecr_last_ack %u tsval_recent_age %u",
203 tc->rcv_opts.tsecr, tc->tsecr_last_ack,
204 tcp_time_tstamp (tc->c_thread_index) - tc->tsval_recent_age);
205 s = format (s, " snd_mss %u\n", tc->snd_mss);
206 s = format (s, " rto %u rto_boff %u srtt %.1f us %.3f rttvar %.1f",
207 tc->rto / 1000, tc->rto_boff, tc->srtt / 1000.0,
208 tc->mrtt_us * 1e3, tc->rttvar / 1000.0);
209 s = format (s, " rtt_ts %.4f rtt_seq %u\n", tc->rtt_ts,
210 tc->rtt_seq - tc->iss);
211 s = format (s, " next_node %u opaque 0x%x fib_index %u sw_if_index %d\n",
212 tc->next_node_index, tc->next_node_opaque, tc->c_fib_index,
214 s = format (s, " cong: %U", format_tcp_congestion, tc);
216 if (tc->state >= TCP_STATE_ESTABLISHED)
218 s = format (s, " sboard: %U\n", format_tcp_scoreboard, &tc->sack_sb,
220 s = format (s, " stats: %U\n", format_tcp_stats, tc);
222 if (vec_len (tc->snd_sacks))
223 s = format (s, " sacks tx: %U\n", format_tcp_sacks, tc);
229 format_tcp_connection_id (u8 * s, va_list * args)
231 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
236 s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
237 tc->c_s_index, "T", format_ip4_address, &tc->c_lcl_ip4,
238 clib_net_to_host_u16 (tc->c_lcl_port), format_ip4_address,
239 &tc->c_rmt_ip4, clib_net_to_host_u16 (tc->c_rmt_port));
243 s = format (s, "[%d:%d][%s] %U:%d->%U:%d", tc->c_thread_index,
244 tc->c_s_index, "T", format_ip6_address, &tc->c_lcl_ip6,
245 clib_net_to_host_u16 (tc->c_lcl_port), format_ip6_address,
246 &tc->c_rmt_ip6, clib_net_to_host_u16 (tc->c_rmt_port));
253 format_tcp_connection (u8 * s, va_list * args)
255 tcp_connection_t *tc = va_arg (*args, tcp_connection_t *);
256 u32 verbose = va_arg (*args, u32);
260 s = format (s, "%-" SESSION_CLI_ID_LEN "U", format_tcp_connection_id, tc);
263 s = format (s, "%-" SESSION_CLI_STATE_LEN "U", format_tcp_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);
414 if (sw_if_index == (u32) ~0)
415 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
417 /* Configure proxy arp across the range */
418 rv = ip4_neighbor_proxy_add (fib_index, start, end);
423 rv = ip4_neighbor_proxy_enable (sw_if_index);
430 dpo_id_t dpo = DPO_INVALID;
432 vec_add1 (tcp_cfg.ip4_src_addrs, start[0]);
434 /* Add local adjacencies for the range */
436 receive_dpo_add_or_lock (DPO_PROTO_IP4, sw_if_index /* sw_if_index */,
439 prefix.fp_proto = FIB_PROTOCOL_IP4;
440 prefix.fp_addr.ip4.as_u32 = start->as_u32;
442 fib_table_entry_special_dpo_update (fib_index,
445 FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
448 start_host_byte_order++;
449 start->as_u32 = clib_host_to_net_u32 (start_host_byte_order);
451 while (start_host_byte_order <= end_host_byte_order);
457 * \brief Configure an ipv6 source address range
458 * @param vm vlib_main_t pointer
459 * @param start first ipv6 address in the source address range
460 * @param end last ipv6 address in the source address range
461 * @param table_id VRF / table ID, 0 for the default FIB
462 * @return 0 if all OK, else an error indication from api_errno.h
466 tcp_configure_v6_source_address_range (vlib_main_t * vm,
467 ip6_address_t * start,
468 ip6_address_t * end, u32 table_id)
472 fib_node_index_t fei;
475 clib_memset (&prefix, 0, sizeof (prefix));
477 fib_index = fib_table_find (FIB_PROTOCOL_IP6, table_id);
480 return VNET_API_ERROR_NO_SUCH_FIB;
486 dpo_id_t dpo = DPO_INVALID;
488 /* Remember this address */
489 vec_add1 (tcp_cfg.ip6_src_addrs, start[0]);
491 /* Lookup the prefix, to identify the interface involved */
493 prefix.fp_proto = FIB_PROTOCOL_IP6;
494 memcpy (&prefix.fp_addr.ip6, start, sizeof (ip6_address_t));
496 fei = fib_table_lookup (fib_index, &prefix);
498 /* Couldn't find route to destination. Bail out. */
499 if (fei == FIB_NODE_INDEX_INVALID)
500 return VNET_API_ERROR_NEXT_HOP_NOT_IN_FIB;
502 sw_if_index = fib_entry_get_resolving_interface (fei);
504 if (sw_if_index == (u32) ~ 0)
505 return VNET_API_ERROR_NO_MATCHING_INTERFACE;
507 /* Add a proxy neighbor discovery entry for this address */
508 ip6_neighbor_proxy_add (sw_if_index, start);
510 /* Add a receive adjacency for this address */
511 receive_dpo_add_or_lock (DPO_PROTO_IP6, sw_if_index /* sw_if_index */,
514 fib_table_entry_special_dpo_update (fib_index,
517 FIB_ENTRY_FLAG_EXCLUSIVE, &dpo);
520 /* Done with the entire range? */
521 if (!memcmp (start, end, sizeof (start[0])))
524 /* Increment the address. DGMS. */
526 for (i = 15; i >= 0; i--)
529 if (tmp.as_u8[i] != 0)
537 static clib_error_t *
538 tcp_src_address_fn (vlib_main_t * vm,
539 unformat_input_t * input, vlib_cli_command_t * cmd_arg)
541 ip4_address_t v4start, v4end;
542 ip6_address_t v6start, v6end;
548 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
550 if (unformat (input, "%U - %U", unformat_ip4_address, &v4start,
551 unformat_ip4_address, &v4end))
553 else if (unformat (input, "%U", unformat_ip4_address, &v4start))
555 memcpy (&v4end, &v4start, sizeof (v4start));
558 else if (unformat (input, "%U - %U", unformat_ip6_address, &v6start,
559 unformat_ip6_address, &v6end))
561 else if (unformat (input, "%U", unformat_ip6_address, &v6start))
563 memcpy (&v6end, &v6start, sizeof (v6start));
566 else if (unformat (input, "fib-table %d", &table_id))
572 if (!v4set && !v6set)
573 return clib_error_return (0, "at least one v4 or v6 address required");
577 rv = tcp_configure_v4_source_address_range (vm, &v4start, &v4end,
584 case VNET_API_ERROR_NO_SUCH_FIB:
585 return clib_error_return (0, "Invalid table-id %d", table_id);
587 case VNET_API_ERROR_INVALID_ARGUMENT:
588 return clib_error_return (0, "Invalid address range %U - %U",
589 format_ip4_address, &v4start,
590 format_ip4_address, &v4end);
592 return clib_error_return (0, "error %d", rv);
598 rv = tcp_configure_v6_source_address_range (vm, &v6start, &v6end,
605 case VNET_API_ERROR_NO_SUCH_FIB:
606 return clib_error_return (0, "Invalid table-id %d", table_id);
609 return clib_error_return (0, "error %d", rv);
616 VLIB_CLI_COMMAND (tcp_src_address_command, static) =
618 .path = "tcp src-address",
619 .short_help = "tcp src-address <ip-addr> [- <ip-addr>] add src address range",
620 .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);
677 VLIB_CLI_COMMAND (tcp_show_scoreboard_trace_command, static) =
679 .path = "show tcp scoreboard trace",
680 .short_help = "show tcp scoreboard trace <connection>",
681 .function = tcp_show_scoreboard_trace_fn,
685 tcp_scoreboard_replay (u8 * s, tcp_connection_t * tc, u8 verbose)
688 scoreboard_trace_elt_t *trace;
689 u32 next_ack, left, group, has_new_ack = 0;
690 tcp_connection_t _placeholder_tc, *placeholder_tc = &_placeholder_tc;
693 if (!TCP_SCOREBOARD_TRACE)
695 s = format (s, "scoreboard tracing not enabled");
702 clib_memset (placeholder_tc, 0, sizeof (*placeholder_tc));
703 tcp_connection_timers_init (placeholder_tc);
704 scoreboard_init (&placeholder_tc->sack_sb);
705 placeholder_tc->rcv_opts.flags |= TCP_OPTS_FLAG_SACK;
707 #if TCP_SCOREBOARD_TRACE
708 trace = tc->sack_sb.trace;
709 trace_len = vec_len (tc->sack_sb.trace);
712 for (i = 0; i < trace_len; i++)
714 if (trace[i].ack != 0)
716 placeholder_tc->snd_una = trace[i].ack - 1448;
717 placeholder_tc->snd_nxt = trace[i].ack;
722 while (left < trace_len)
724 group = trace[left].group;
725 vec_reset_length (placeholder_tc->rcv_opts.sacks);
727 while (trace[left].group == group)
729 if (trace[left].ack != 0)
732 s = format (s, "Adding ack %u, snd_una_max %u, segs: ",
733 trace[left].ack, trace[left].snd_nxt);
734 placeholder_tc->snd_nxt = trace[left].snd_nxt;
735 next_ack = trace[left].ack;
741 s = format (s, "[%u, %u], ", trace[left].start,
743 vec_add2 (placeholder_tc->rcv_opts.sacks, block, 1);
744 block->start = trace[left].start;
745 block->end = trace[left].end;
751 tcp_rcv_sacks (placeholder_tc, next_ack);
753 placeholder_tc->snd_una = next_ack;
756 s = format (s, "result: %U", format_tcp_scoreboard,
757 &placeholder_tc->sack_sb);
761 format (s, "result: %U", format_tcp_scoreboard, &placeholder_tc->sack_sb);
766 static clib_error_t *
767 tcp_scoreboard_trace_fn (vlib_main_t * vm, unformat_input_t * input,
768 vlib_cli_command_t * cmd_arg)
770 transport_connection_t *tconn = 0;
771 tcp_connection_t *tc = 0;
773 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
775 if (unformat (input, "%U", unformat_transport_connection, &tconn,
776 TRANSPORT_PROTO_TCP))
779 return clib_error_return (0, "unknown input `%U'",
780 format_unformat_error, input);
783 if (!TCP_SCOREBOARD_TRACE)
785 vlib_cli_output (vm, "scoreboard tracing not enabled");
789 tc = tcp_get_connection_from_transport (tconn);
792 vlib_cli_output (vm, "connection not found");
795 str = tcp_scoreboard_replay (str, tc, 1);
796 vlib_cli_output (vm, "%v", str);
800 VLIB_CLI_COMMAND (tcp_replay_scoreboard_command, static) =
802 .path = "tcp replay scoreboard",
803 .short_help = "tcp replay scoreboard <connection>",
804 .function = tcp_scoreboard_trace_fn,
807 static clib_error_t *
808 show_tcp_punt_fn (vlib_main_t * vm, unformat_input_t * input,
809 vlib_cli_command_t * cmd_arg)
811 tcp_main_t *tm = vnet_get_tcp_main ();
812 if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
813 return clib_error_return (0, "unknown input `%U'", format_unformat_error,
815 vlib_cli_output (vm, "IPv4 TCP punt: %s",
816 tm->punt_unknown4 ? "enabled" : "disabled");
817 vlib_cli_output (vm, "IPv6 TCP punt: %s",
818 tm->punt_unknown6 ? "enabled" : "disabled");
821 VLIB_CLI_COMMAND (show_tcp_punt_command, static) =
823 .path = "show tcp punt",
824 .short_help = "show tcp punt",
825 .function = show_tcp_punt_fn,
828 static clib_error_t *
829 show_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
830 vlib_cli_command_t * cmd)
832 tcp_main_t *tm = vnet_get_tcp_main ();
833 tcp_worker_ctx_t *wrk;
836 if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
837 return clib_error_return (0, "unknown input `%U'", format_unformat_error,
839 for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
841 wrk = tcp_get_worker (thread);
842 vlib_cli_output (vm, "Thread %u:\n", thread);
844 if (clib_fifo_elts (wrk->pending_timers))
845 vlib_cli_output (vm, " %lu pending timers",
846 clib_fifo_elts (wrk->pending_timers));
848 #define _(name,type,str) \
849 if (wrk->stats.name) \
850 vlib_cli_output (vm, " %lu %s", wrk->stats.name, str);
858 VLIB_CLI_COMMAND (show_tcp_stats_command, static) =
860 .path = "show tcp stats",
861 .short_help = "show tcp stats",
862 .function = show_tcp_stats_fn,
865 static clib_error_t *
866 clear_tcp_stats_fn (vlib_main_t * vm, unformat_input_t * input,
867 vlib_cli_command_t * cmd)
869 tcp_main_t *tm = vnet_get_tcp_main ();
870 tcp_worker_ctx_t *wrk;
873 if (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
874 return clib_error_return (0, "unknown input `%U'", format_unformat_error,
877 for (thread = 0; thread < vec_len (tm->wrk_ctx); thread++)
879 wrk = tcp_get_worker (thread);
880 clib_memset (&wrk->stats, 0, sizeof (wrk->stats));
886 VLIB_CLI_COMMAND (clear_tcp_stats_command, static) =
888 .path = "clear tcp stats",
889 .short_help = "clear tcp stats",
890 .function = clear_tcp_stats_fn,
894 unformat_tcp_cc_algo (unformat_input_t * input, va_list * va)
896 tcp_cc_algorithm_type_e *result = va_arg (*va, tcp_cc_algorithm_type_e *);
897 tcp_main_t *tm = &tcp_main;
902 if (unformat (input, "%s", &cc_algo_name)
903 && ((p = hash_get_mem (tm->cc_algo_by_name, cc_algo_name))))
909 vec_free (cc_algo_name);
914 unformat_tcp_cc_algo_cfg (unformat_input_t * input, va_list * va)
916 tcp_main_t *tm = vnet_get_tcp_main ();
917 tcp_cc_algorithm_t *cc_alg;
918 unformat_input_t sub_input;
921 vec_foreach (cc_alg, tm->cc_algos)
923 if (!unformat (input, cc_alg->name))
926 if (cc_alg->unformat_cfg
927 && unformat (input, "%U", unformat_vlib_cli_sub_input, &sub_input))
929 if (cc_alg->unformat_cfg (&sub_input))
936 static clib_error_t *
937 tcp_config_fn (vlib_main_t * vm, unformat_input_t * input)
939 u32 cwnd_multiplier, tmp_time, mtu, max_gso_size, tmp;
942 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
944 if (unformat (input, "preallocated-connections %d",
945 &tcp_cfg.preallocated_connections))
947 /* Config deprecated. Will be removed in a later release */
948 else if (unformat (input, "preallocated-half-open-connections %d", &tmp))
950 else if (unformat (input, "buffer-fail-fraction %f",
951 &tcp_cfg.buffer_fail_fraction))
953 else if (unformat (input, "max-rx-fifo %U", unformat_memory_size,
956 if (memory_size >= 0x100000000)
958 return clib_error_return
959 (0, "max-rx-fifo %llu (0x%llx) too large", memory_size,
962 tcp_cfg.max_rx_fifo = memory_size;
964 else if (unformat (input, "min-rx-fifo %U", unformat_memory_size,
967 if (memory_size >= 0x100000000)
969 return clib_error_return
970 (0, "min-rx-fifo %llu (0x%llx) too large", memory_size,
973 tcp_cfg.min_rx_fifo = memory_size;
975 else if (unformat (input, "mtu %u", &mtu))
976 tcp_cfg.default_mtu = mtu;
977 else if (unformat (input, "rwnd-min-update-ack %d",
978 &tcp_cfg.rwnd_min_update_ack))
980 else if (unformat (input, "initial-cwnd-multiplier %u",
982 tcp_cfg.initial_cwnd_multiplier = cwnd_multiplier;
983 else if (unformat (input, "no-tx-pacing"))
984 tcp_cfg.enable_tx_pacing = 0;
985 else if (unformat (input, "tso"))
986 tcp_cfg.allow_tso = 1;
987 else if (unformat (input, "no-csum-offload"))
988 tcp_cfg.csum_offload = 0;
989 else if (unformat (input, "max-gso-size %u", &max_gso_size))
990 tcp_cfg.max_gso_size = clib_min (max_gso_size, TCP_MAX_GSO_SZ);
991 else if (unformat (input, "cc-algo %U", unformat_tcp_cc_algo,
994 else if (unformat (input, "%U", unformat_tcp_cc_algo_cfg))
996 else if (unformat (input, "closewait-time %u", &tmp_time))
997 tcp_cfg.closewait_time = tmp_time / TCP_TIMER_TICK;
998 else if (unformat (input, "timewait-time %u", &tmp_time))
999 tcp_cfg.timewait_time = tmp_time / TCP_TIMER_TICK;
1000 else if (unformat (input, "finwait1-time %u", &tmp_time))
1001 tcp_cfg.finwait1_time = tmp_time / TCP_TIMER_TICK;
1002 else if (unformat (input, "finwait2-time %u", &tmp_time))
1003 tcp_cfg.finwait2_time = tmp_time / TCP_TIMER_TICK;
1004 else if (unformat (input, "lastack-time %u", &tmp_time))
1005 tcp_cfg.lastack_time = tmp_time / TCP_TIMER_TICK;
1006 else if (unformat (input, "closing-time %u", &tmp_time))
1007 tcp_cfg.closing_time = tmp_time / TCP_TIMER_TICK;
1008 else if (unformat (input, "alloc-err-timeout %u", &tmp_time))
1009 tcp_cfg.alloc_err_timeout = tmp_time / TCP_TIMER_TICK;
1010 else if (unformat (input, "cleanup-time %u", &tmp_time))
1011 tcp_cfg.cleanup_time = tmp_time / 1000.0;
1013 return clib_error_return (0, "unknown input `%U'",
1014 format_unformat_error, input);
1019 VLIB_CONFIG_FUNCTION (tcp_config_fn, "tcp");
1022 * fd.io coding-style-patch-verification: ON
1025 * eval: (c-set-style "gnu")