2 * Copyright (c) 2017-2019 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/session/transport.h>
17 #include <vnet/session/session.h>
18 #include <vnet/fib/fib.h>
21 * Per-type vector of transport protocol virtual function tables
23 transport_proto_vft_t *tp_vfts;
25 typedef struct local_endpoint_
27 transport_endpoint_t ep;
28 transport_proto_t proto;
32 typedef struct transport_main_
34 transport_endpoint_table_t local_endpoints_table;
35 local_endpoint_t *local_endpoints;
36 u32 *lcl_endpts_freelist;
37 u32 port_allocator_seed;
38 u16 port_allocator_min_src_port;
39 u16 port_allocator_max_src_port;
40 u8 lcl_endpts_cleanup_pending;
41 clib_spinlock_t local_endpoints_lock;
44 static transport_main_t tp_main;
47 format_transport_proto (u8 * s, va_list * args)
49 u32 transport_proto = va_arg (*args, u32);
51 if (tp_vfts[transport_proto].transport_options.name)
52 s = format (s, "%s", tp_vfts[transport_proto].transport_options.name);
54 s = format (s, "n/a");
60 format_transport_proto_short (u8 * s, va_list * args)
62 u32 transport_proto = va_arg (*args, u32);
65 short_name = tp_vfts[transport_proto].transport_options.short_name;
67 s = format (s, "%s", short_name);
74 const char *transport_flags_str[] = {
75 #define _(sym, str) str,
76 foreach_transport_connection_flag
81 format_transport_flags (u8 *s, va_list *args)
83 transport_connection_flags_t flags;
86 flags = va_arg (*args, transport_connection_flags_t);
88 for (i = 0; i < TRANSPORT_CONNECTION_N_FLAGS; i++)
92 for (i = 0; i < last; i++)
95 s = format (s, "%s, ", transport_flags_str[i]);
98 s = format (s, "%s", transport_flags_str[last]);
104 format_transport_connection (u8 * s, va_list * args)
106 u32 transport_proto = va_arg (*args, u32);
107 u32 conn_index = va_arg (*args, u32);
108 u32 thread_index = va_arg (*args, u32);
109 u32 verbose = va_arg (*args, u32);
110 transport_proto_vft_t *tp_vft;
111 transport_connection_t *tc;
114 tp_vft = transport_protocol_get_vft (transport_proto);
118 s = format (s, "%U", tp_vft->format_connection, conn_index, thread_index,
120 tc = tp_vft->get_connection (conn_index, thread_index);
121 if (tc && verbose > 1)
123 indent = format_get_indent (s) + 1;
124 if (transport_connection_is_tx_paced (tc))
125 s = format (s, "%Upacer: %U\n", format_white_space, indent,
126 format_transport_pacer, &tc->pacer, tc->thread_index);
127 s = format (s, "%Utransport: flags: %U\n", format_white_space, indent,
128 format_transport_flags, tc->flags);
134 format_transport_listen_connection (u8 * s, va_list * args)
136 u32 transport_proto = va_arg (*args, u32);
137 transport_proto_vft_t *tp_vft;
139 tp_vft = transport_protocol_get_vft (transport_proto);
143 s = (tp_vft->format_listener) (s, args);
148 format_transport_half_open_connection (u8 * s, va_list * args)
150 u32 transport_proto = va_arg (*args, u32);
151 transport_proto_vft_t *tp_vft;
153 tp_vft = transport_protocol_get_vft (transport_proto);
157 s = (tp_vft->format_half_open) (s, args);
162 unformat_transport_str_match (unformat_input_t * input, const char *str)
166 if (strlen (str) > vec_len (input->buffer) - input->index)
169 for (i = 0; i < strlen (str); i++)
171 if (input->buffer[i + input->index] != str[i])
178 unformat_transport_proto (unformat_input_t * input, va_list * args)
180 u32 *proto = va_arg (*args, u32 *);
181 transport_proto_vft_t *tp_vft;
182 u8 longest_match = 0, match;
183 char *str, *str_match = 0;
184 transport_proto_t tp;
186 for (tp = 0; tp < vec_len (tp_vfts); tp++)
188 tp_vft = &tp_vfts[tp];
189 str = tp_vft->transport_options.name;
192 if (unformat_transport_str_match (input, str))
194 match = strlen (str);
195 if (match > longest_match)
198 longest_match = match;
205 (void) unformat (input, str_match);
213 format_transport_protos (u8 * s, va_list * args)
215 transport_proto_vft_t *tp_vft;
217 vec_foreach (tp_vft, tp_vfts)
218 s = format (s, "%s\n", tp_vft->transport_options.name);
224 transport_endpoint_lookup (transport_endpoint_table_t * ht, u8 proto,
225 ip46_address_t * ip, u16 port)
227 clib_bihash_kv_24_8_t kv;
230 kv.key[0] = ip->as_u64[0];
231 kv.key[1] = ip->as_u64[1];
232 kv.key[2] = (u64) port << 8 | (u64) proto;
234 rv = clib_bihash_search_inline_24_8 (ht, &kv);
238 return ENDPOINT_INVALID_INDEX;
242 transport_endpoint_table_add (transport_endpoint_table_t * ht, u8 proto,
243 transport_endpoint_t * te, u32 value)
245 clib_bihash_kv_24_8_t kv;
247 kv.key[0] = te->ip.as_u64[0];
248 kv.key[1] = te->ip.as_u64[1];
249 kv.key[2] = (u64) te->port << 8 | (u64) proto;
252 clib_bihash_add_del_24_8 (ht, &kv, 1);
256 transport_endpoint_table_del (transport_endpoint_table_t * ht, u8 proto,
257 transport_endpoint_t * te)
259 clib_bihash_kv_24_8_t kv;
261 kv.key[0] = te->ip.as_u64[0];
262 kv.key[1] = te->ip.as_u64[1];
263 kv.key[2] = (u64) te->port << 8 | (u64) proto;
265 clib_bihash_add_del_24_8 (ht, &kv, 0);
269 transport_register_protocol (transport_proto_t transport_proto,
270 const transport_proto_vft_t * vft,
271 fib_protocol_t fib_proto, u32 output_node)
273 u8 is_ip4 = fib_proto == FIB_PROTOCOL_IP4;
275 vec_validate (tp_vfts, transport_proto);
276 tp_vfts[transport_proto] = *vft;
278 session_register_transport (transport_proto, vft, is_ip4, output_node);
282 transport_register_new_protocol (const transport_proto_vft_t * vft,
283 fib_protocol_t fib_proto, u32 output_node)
285 transport_proto_t transport_proto;
288 transport_proto = session_add_transport_proto ();
289 is_ip4 = fib_proto == FIB_PROTOCOL_IP4;
291 vec_validate (tp_vfts, transport_proto);
292 tp_vfts[transport_proto] = *vft;
294 session_register_transport (transport_proto, vft, is_ip4, output_node);
296 return transport_proto;
300 * Get transport virtual function table
302 * @param type - session type (not protocol type)
304 transport_proto_vft_t *
305 transport_protocol_get_vft (transport_proto_t transport_proto)
307 if (transport_proto >= vec_len (tp_vfts))
309 return &tp_vfts[transport_proto];
312 transport_service_type_t
313 transport_protocol_service_type (transport_proto_t tp)
315 return tp_vfts[tp].transport_options.service_type;
318 transport_tx_fn_type_t
319 transport_protocol_tx_fn_type (transport_proto_t tp)
321 return tp_vfts[tp].transport_options.tx_type;
325 transport_cleanup (transport_proto_t tp, u32 conn_index, u8 thread_index)
327 tp_vfts[tp].cleanup (conn_index, thread_index);
331 transport_cleanup_half_open (transport_proto_t tp, u32 conn_index)
333 if (tp_vfts[tp].cleanup_ho)
334 tp_vfts[tp].cleanup_ho (conn_index);
338 transport_connect (transport_proto_t tp, transport_endpoint_cfg_t * tep)
340 if (PREDICT_FALSE (!tp_vfts[tp].connect))
341 return SESSION_E_TRANSPORT_NO_REG;
342 return tp_vfts[tp].connect (tep);
346 transport_half_close (transport_proto_t tp, u32 conn_index, u8 thread_index)
348 if (tp_vfts[tp].half_close)
349 tp_vfts[tp].half_close (conn_index, thread_index);
353 transport_close (transport_proto_t tp, u32 conn_index, u8 thread_index)
355 tp_vfts[tp].close (conn_index, thread_index);
359 transport_reset (transport_proto_t tp, u32 conn_index, u8 thread_index)
361 if (tp_vfts[tp].reset)
362 tp_vfts[tp].reset (conn_index, thread_index);
364 tp_vfts[tp].close (conn_index, thread_index);
368 transport_start_listen (transport_proto_t tp, u32 session_index,
369 transport_endpoint_cfg_t *tep)
371 if (PREDICT_FALSE (!tp_vfts[tp].start_listen))
372 return SESSION_E_TRANSPORT_NO_REG;
373 return tp_vfts[tp].start_listen (session_index, tep);
377 transport_stop_listen (transport_proto_t tp, u32 conn_index)
379 return tp_vfts[tp].stop_listen (conn_index);
383 transport_protocol_is_cl (transport_proto_t tp)
385 return (tp_vfts[tp].transport_options.service_type == TRANSPORT_SERVICE_CL);
389 default_get_transport_endpoint (transport_connection_t * tc,
390 transport_endpoint_t * tep, u8 is_lcl)
394 tep->port = tc->lcl_port;
395 tep->is_ip4 = tc->is_ip4;
396 clib_memcpy_fast (&tep->ip, &tc->lcl_ip, sizeof (tc->lcl_ip));
400 tep->port = tc->rmt_port;
401 tep->is_ip4 = tc->is_ip4;
402 clib_memcpy_fast (&tep->ip, &tc->rmt_ip, sizeof (tc->rmt_ip));
407 transport_get_endpoint (transport_proto_t tp, u32 conn_index,
408 u32 thread_index, transport_endpoint_t * tep,
411 if (tp_vfts[tp].get_transport_endpoint)
412 tp_vfts[tp].get_transport_endpoint (conn_index, thread_index, tep,
416 transport_connection_t *tc;
417 tc = transport_get_connection (tp, conn_index, thread_index);
418 default_get_transport_endpoint (tc, tep, is_lcl);
423 transport_get_listener_endpoint (transport_proto_t tp, u32 conn_index,
424 transport_endpoint_t * tep, u8 is_lcl)
426 if (tp_vfts[tp].get_transport_listener_endpoint)
427 tp_vfts[tp].get_transport_listener_endpoint (conn_index, tep, is_lcl);
430 transport_connection_t *tc;
431 tc = transport_get_listener (tp, conn_index);
432 default_get_transport_endpoint (tc, tep, is_lcl);
437 transport_connection_attribute (transport_proto_t tp, u32 conn_index,
438 u8 thread_index, u8 is_get,
439 transport_endpt_attr_t *attr)
441 if (!tp_vfts[tp].attribute)
444 return tp_vfts[tp].attribute (conn_index, thread_index, is_get, attr);
447 #define PORT_MASK ((1 << 16)- 1)
450 transport_endpoint_free (u32 tepi)
452 transport_main_t *tm = &tp_main;
453 pool_put_index (tm->local_endpoints, tepi);
456 always_inline local_endpoint_t *
457 transport_endpoint_alloc (void)
459 transport_main_t *tm = &tp_main;
460 local_endpoint_t *lep;
462 ASSERT (vlib_get_thread_index () <= transport_cl_thread ());
464 pool_get_aligned_safe (tm->local_endpoints, lep, 0);
469 transport_cleanup_freelist (void)
471 transport_main_t *tm = &tp_main;
472 local_endpoint_t *lep;
475 clib_spinlock_lock (&tm->local_endpoints_lock);
477 vec_foreach (lep_indexp, tm->lcl_endpts_freelist)
479 lep = pool_elt_at_index (tm->local_endpoints, *lep_indexp);
481 /* Port re-shared after attempt to cleanup */
485 transport_endpoint_table_del (&tm->local_endpoints_table, lep->proto,
487 transport_endpoint_free (*lep_indexp);
490 vec_reset_length (tm->lcl_endpts_freelist);
492 tm->lcl_endpts_cleanup_pending = 0;
494 clib_spinlock_unlock (&tm->local_endpoints_lock);
498 transport_program_endpoint_cleanup (u32 lepi)
500 transport_main_t *tm = &tp_main;
503 /* All workers can free connections. Synchronize access to freelist */
504 clib_spinlock_lock (&tm->local_endpoints_lock);
506 vec_add1 (tm->lcl_endpts_freelist, lepi);
508 /* Avoid accumulating lots of endpoints for cleanup */
509 if (!tm->lcl_endpts_cleanup_pending &&
510 vec_len (tm->lcl_endpts_freelist) > 32)
512 tm->lcl_endpts_cleanup_pending = 1;
516 clib_spinlock_unlock (&tm->local_endpoints_lock);
519 session_send_rpc_evt_to_thread_force (transport_cl_thread (),
520 transport_cleanup_freelist, 0);
524 transport_release_local_endpoint (u8 proto, ip46_address_t *lcl_ip, u16 port)
526 transport_main_t *tm = &tp_main;
527 local_endpoint_t *lep;
530 lepi = transport_endpoint_lookup (&tm->local_endpoints_table, proto, lcl_ip,
532 if (lepi == ENDPOINT_INVALID_INDEX)
535 /* First worker may be cleaning up ports so avoid touching free bitmap */
536 lep = &tm->local_endpoints[lepi];
537 ASSERT (lep->refcnt >= 1);
539 /* Local endpoint no longer in use, program cleanup */
540 if (!clib_atomic_sub_fetch (&lep->refcnt, 1))
542 transport_program_endpoint_cleanup (lepi);
546 /* Not an error, just in idication that endpoint was not cleaned up */
551 transport_endpoint_mark_used (u8 proto, ip46_address_t *ip, u16 port)
553 transport_main_t *tm = &tp_main;
554 local_endpoint_t *lep;
557 ASSERT (vlib_get_thread_index () <= transport_cl_thread ());
560 transport_endpoint_lookup (&tm->local_endpoints_table, proto, ip, port);
561 if (tei != ENDPOINT_INVALID_INDEX)
562 return SESSION_E_PORTINUSE;
564 /* Pool reallocs with worker barrier */
565 lep = transport_endpoint_alloc ();
566 clib_memcpy_fast (&lep->ep.ip, ip, sizeof (*ip));
571 transport_endpoint_table_add (&tm->local_endpoints_table, proto, &lep->ep,
572 lep - tm->local_endpoints);
578 transport_share_local_endpoint (u8 proto, ip46_address_t * lcl_ip, u16 port)
580 transport_main_t *tm = &tp_main;
581 local_endpoint_t *lep;
584 /* Active opens should call this only from a control thread, which are also
585 * used to allocate and free ports. So, pool has only one writer and
586 * potentially many readers. Listeners are allocated with barrier */
587 lepi = transport_endpoint_lookup (&tm->local_endpoints_table, proto, lcl_ip,
589 if (lepi != ENDPOINT_INVALID_INDEX)
591 lep = pool_elt_at_index (tm->local_endpoints, lepi);
592 clib_atomic_add_fetch (&lep->refcnt, 1);
597 * Allocate local port and add if successful add entry to local endpoint
598 * table to mark the pair as used.
600 * @return port in net order or -1 if port cannot be allocated
603 transport_alloc_local_port (u8 proto, ip46_address_t *lcl_addr,
604 transport_endpoint_cfg_t *rmt)
606 transport_main_t *tm = &tp_main;
607 u16 min = tm->port_allocator_min_src_port;
608 u16 max = tm->port_allocator_max_src_port;
613 /* Only support active opens from one of ctrl threads */
614 ASSERT (vlib_get_thread_index () <= transport_cl_thread ());
616 /* Search for first free slot */
617 for (tries = 0; tries < limit; tries++)
621 /* Find a port in the specified range */
624 port = random_u32 (&tm->port_allocator_seed) & PORT_MASK;
625 if (PREDICT_TRUE (port >= min && port < max))
627 port = clib_host_to_net_u16 (port);
632 if (!transport_endpoint_mark_used (proto, lcl_addr, port))
635 /* IP:port pair already in use, check if 6-tuple available */
636 if (session_lookup_connection (rmt->fib_index, lcl_addr, &rmt->ip, port,
637 rmt->port, proto, rmt->is_ip4))
640 /* 6-tuple is available so increment lcl endpoint refcount */
641 transport_share_local_endpoint (proto, lcl_addr, port);
648 static session_error_t
649 transport_get_interface_ip (u32 sw_if_index, u8 is_ip4, ip46_address_t * addr)
654 ip4 = ip_interface_get_first_ip (sw_if_index, 1);
656 return SESSION_E_NOIP;
657 addr->ip4.as_u32 = ip4->as_u32;
662 ip6 = ip_interface_get_first_ip (sw_if_index, 0);
664 return SESSION_E_NOIP;
665 clib_memcpy_fast (&addr->ip6, ip6, sizeof (*ip6));
670 static session_error_t
671 transport_find_local_ip_for_remote (u32 *sw_if_index,
672 transport_endpoint_t *rmt,
673 ip46_address_t *lcl_addr)
675 fib_node_index_t fei;
678 if (*sw_if_index == ENDPOINT_INVALID_INDEX)
680 /* Find a FIB path to the destination */
681 clib_memcpy_fast (&prefix.fp_addr, &rmt->ip, sizeof (rmt->ip));
682 prefix.fp_proto = rmt->is_ip4 ? FIB_PROTOCOL_IP4 : FIB_PROTOCOL_IP6;
683 prefix.fp_len = rmt->is_ip4 ? 32 : 128;
685 ASSERT (rmt->fib_index != ENDPOINT_INVALID_INDEX);
686 fei = fib_table_lookup (rmt->fib_index, &prefix);
688 /* Couldn't find route to destination. Bail out. */
689 if (fei == FIB_NODE_INDEX_INVALID)
690 return SESSION_E_NOROUTE;
692 *sw_if_index = fib_entry_get_resolving_interface (fei);
693 if (*sw_if_index == ENDPOINT_INVALID_INDEX)
694 return SESSION_E_NOINTF;
697 clib_memset (lcl_addr, 0, sizeof (*lcl_addr));
698 return transport_get_interface_ip (*sw_if_index, rmt->is_ip4, lcl_addr);
702 transport_alloc_local_endpoint (u8 proto, transport_endpoint_cfg_t * rmt_cfg,
703 ip46_address_t * lcl_addr, u16 * lcl_port)
705 transport_endpoint_t *rmt = (transport_endpoint_t *) rmt_cfg;
706 transport_main_t *tm = &tp_main;
707 session_error_t error;
711 * Find the local address
713 if (ip_is_zero (&rmt_cfg->peer.ip, rmt_cfg->peer.is_ip4))
715 error = transport_find_local_ip_for_remote (&rmt_cfg->peer.sw_if_index,
722 /* Assume session layer vetted this address */
723 clib_memcpy_fast (lcl_addr, &rmt_cfg->peer.ip,
724 sizeof (rmt_cfg->peer.ip));
727 /* Cleanup freelist if need be */
728 if (vec_len (tm->lcl_endpts_freelist))
729 transport_cleanup_freelist ();
732 * Allocate source port
734 if (rmt_cfg->peer.port == 0)
736 port = transport_alloc_local_port (proto, lcl_addr, rmt_cfg);
738 return SESSION_E_NOPORT;
743 *lcl_port = rmt_cfg->peer.port;
745 if (!transport_endpoint_mark_used (proto, lcl_addr, rmt_cfg->peer.port))
748 /* IP:port pair already in use, check if 6-tuple available */
749 if (session_lookup_connection (rmt->fib_index, lcl_addr, &rmt->ip,
750 rmt_cfg->peer.port, rmt->port, proto,
752 return SESSION_E_PORTINUSE;
754 /* 6-tuple is available so increment lcl endpoint refcount */
755 transport_share_local_endpoint (proto, lcl_addr, rmt_cfg->peer.port);
764 format_clib_us_time (u8 * s, va_list * args)
766 clib_us_time_t t = va_arg (*args, clib_us_time_t);
768 s = format (s, "%u us", t);
770 s = format (s, "%.3f s", (f64) t * CLIB_US_TIME_PERIOD);
775 format_transport_pacer (u8 * s, va_list * args)
777 spacer_t *pacer = va_arg (*args, spacer_t *);
778 u32 thread_index = va_arg (*args, int);
779 clib_us_time_t now, diff;
781 now = transport_us_time_now (thread_index);
782 diff = now - pacer->last_update;
783 s = format (s, "rate %lu bucket %ld t/p %.3f last_update %U burst %u",
784 pacer->bytes_per_sec, pacer->bucket, pacer->tokens_per_period,
785 format_clib_us_time, diff, pacer->max_burst);
790 spacer_max_burst (spacer_t * pacer, clib_us_time_t time_now)
792 u64 n_periods = (time_now - pacer->last_update);
795 if ((inc = (f32) n_periods * pacer->tokens_per_period) > 10)
797 pacer->last_update = time_now;
798 pacer->bucket = clib_min (pacer->bucket + inc, (i64) pacer->max_burst);
801 return pacer->bucket >= 0 ? pacer->max_burst : 0;
805 spacer_update_bucket (spacer_t * pacer, u32 bytes)
807 pacer->bucket -= bytes;
811 spacer_set_pace_rate (spacer_t * pacer, u64 rate_bytes_per_sec,
812 clib_us_time_t rtt, clib_time_type_t sec_per_loop)
814 clib_us_time_t max_time;
816 ASSERT (rate_bytes_per_sec != 0);
817 pacer->bytes_per_sec = rate_bytes_per_sec;
818 pacer->tokens_per_period = rate_bytes_per_sec * CLIB_US_TIME_PERIOD;
820 /* Allow a min number of bursts per rtt, if their size is acceptable. Goal
821 * is to spread the sending of data over the rtt but to also allow for some
822 * coalescing that can potentially
823 * 1) reduce load on session layer by reducing scheduling frequency for a
825 * 2) optimize sending when tso if available
827 * Max "time-length" of a burst cannot be less than 1us or more than 1ms.
829 max_time = clib_max (rtt / TRANSPORT_PACER_BURSTS_PER_RTT,
830 (clib_us_time_t) (sec_per_loop * CLIB_US_TIME_FREQ));
831 max_time = clib_clamp (max_time, 1 /* 1us */ , 1000 /* 1ms */ );
832 pacer->max_burst = (rate_bytes_per_sec * max_time) * CLIB_US_TIME_PERIOD;
833 pacer->max_burst = clib_clamp (pacer->max_burst, TRANSPORT_PACER_MIN_BURST,
834 TRANSPORT_PACER_MAX_BURST);
838 spacer_pace_rate (spacer_t * pacer)
840 return pacer->bytes_per_sec;
844 spacer_reset (spacer_t * pacer, clib_us_time_t time_now, u64 bucket)
846 pacer->last_update = time_now;
847 pacer->bucket = bucket;
851 transport_connection_tx_pacer_reset (transport_connection_t * tc,
852 u64 rate_bytes_per_sec, u32 start_bucket,
855 spacer_set_pace_rate (&tc->pacer, rate_bytes_per_sec, rtt,
856 transport_seconds_per_loop (tc->thread_index));
857 spacer_reset (&tc->pacer, transport_us_time_now (tc->thread_index),
862 transport_connection_tx_pacer_reset_bucket (transport_connection_t * tc,
865 spacer_reset (&tc->pacer, transport_us_time_now (tc->thread_index), bucket);
869 transport_connection_tx_pacer_init (transport_connection_t * tc,
870 u64 rate_bytes_per_sec,
873 tc->flags |= TRANSPORT_CONNECTION_F_IS_TX_PACED;
874 transport_connection_tx_pacer_reset (tc, rate_bytes_per_sec,
875 initial_bucket, 1e6);
879 transport_connection_tx_pacer_update (transport_connection_t * tc,
880 u64 bytes_per_sec, clib_us_time_t rtt)
882 spacer_set_pace_rate (&tc->pacer, bytes_per_sec, rtt,
883 transport_seconds_per_loop (tc->thread_index));
887 transport_connection_tx_pacer_burst (transport_connection_t * tc)
889 return spacer_max_burst (&tc->pacer,
890 transport_us_time_now (tc->thread_index));
894 transport_connection_tx_pacer_rate (transport_connection_t * tc)
896 return spacer_pace_rate (&tc->pacer);
900 transport_connection_update_tx_bytes (transport_connection_t * tc, u32 bytes)
902 if (transport_connection_is_tx_paced (tc))
903 spacer_update_bucket (&tc->pacer, bytes);
907 transport_connection_tx_pacer_update_bytes (transport_connection_t * tc,
910 spacer_update_bucket (&tc->pacer, bytes);
914 transport_update_pacer_time (u32 thread_index, clib_time_type_t now)
916 session_wrk_update_time (session_main_get_worker (thread_index), now);
920 transport_connection_reschedule (transport_connection_t * tc)
922 tc->flags &= ~TRANSPORT_CONNECTION_F_DESCHED;
923 transport_connection_tx_pacer_reset_bucket (tc, 0 /* bucket */);
924 if (transport_max_tx_dequeue (tc))
925 sesssion_reschedule_tx (tc);
928 session_t *s = session_get (tc->s_index, tc->thread_index);
929 svm_fifo_unset_event (s->tx_fifo);
930 if (svm_fifo_max_dequeue_cons (s->tx_fifo))
931 if (svm_fifo_set_event (s->tx_fifo))
932 sesssion_reschedule_tx (tc);
937 transport_fifos_init_ooo (transport_connection_t * tc)
939 session_t *s = session_get (tc->s_index, tc->thread_index);
940 svm_fifo_init_ooo_lookup (s->rx_fifo, 0 /* ooo enq */ );
941 svm_fifo_init_ooo_lookup (s->tx_fifo, 1 /* ooo deq */ );
945 transport_update_time (clib_time_type_t time_now, u8 thread_index)
947 transport_proto_vft_t *vft;
948 vec_foreach (vft, tp_vfts)
950 if (vft->update_time)
951 (vft->update_time) (time_now, thread_index);
956 transport_enable_disable (vlib_main_t * vm, u8 is_en)
958 transport_proto_vft_t *vft;
959 vec_foreach (vft, tp_vfts)
962 (vft->enable) (vm, is_en);
964 if (vft->update_time)
965 session_register_update_time_fn (vft->update_time, is_en);
970 transport_init (void)
972 vlib_thread_main_t *vtm = vlib_get_thread_main ();
973 session_main_t *smm = vnet_get_session_main ();
974 transport_main_t *tm = &tp_main;
977 if (smm->local_endpoints_table_buckets == 0)
978 smm->local_endpoints_table_buckets = 250000;
979 if (smm->local_endpoints_table_memory == 0)
980 smm->local_endpoints_table_memory = 512 << 20;
982 /* Initialize [port-allocator] random number seed */
983 tm->port_allocator_seed = (u32) clib_cpu_time_now ();
984 tm->port_allocator_min_src_port = smm->port_allocator_min_src_port;
985 tm->port_allocator_max_src_port = smm->port_allocator_max_src_port;
987 clib_bihash_init_24_8 (&tm->local_endpoints_table, "local endpoints table",
988 smm->local_endpoints_table_buckets,
989 smm->local_endpoints_table_memory);
990 clib_spinlock_init (&tm->local_endpoints_lock);
992 num_threads = 1 /* main thread */ + vtm->n_threads;
995 /* Main not polled if there are workers */
996 smm->transport_cl_thread = 1;
1001 * fd.io coding-style-patch-verification: ON
1004 * eval: (c-set-style "gnu")