2 * Copyright (c) 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 <sys/socket.h>
18 #include <vnet/session/application.h>
19 #include <vnet/session/transport.h>
20 #include <vnet/session/session.h>
21 #include <vlib/unix/plugin.h>
22 #include <vpp/app/version.h>
24 #include <vppinfra/lock.h>
26 #include <quic/quic.h>
27 #include <quic/certs.h>
28 #include <quic/error.h>
29 #include <quic/quic_crypto.h>
31 #include <quicly/defaults.h>
33 static char *quic_error_strings[] = {
34 #define quic_error(n,s) s,
35 #include "quic_error.def"
39 static quic_main_t quic_main;
40 static void quic_update_timer (quic_ctx_t * ctx);
41 static int quic_check_quic_session_connected (quic_ctx_t * ctx);
43 /* Helper functions */
46 quic_ctx_alloc (u32 thread_index)
48 quic_main_t *qm = &quic_main;
51 pool_get (qm->ctx_pool[thread_index], ctx);
53 clib_memset (ctx, 0, sizeof (quic_ctx_t));
54 ctx->c_thread_index = thread_index;
55 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
56 QUIC_DBG (3, "Allocated quic_ctx %u on thread %u",
57 ctx - qm->ctx_pool[thread_index], thread_index);
58 return ctx - qm->ctx_pool[thread_index];
62 quic_ctx_free (quic_ctx_t * ctx)
64 QUIC_DBG (2, "Free ctx %u %x", ctx->c_thread_index, ctx->c_c_index);
65 u32 thread_index = ctx->c_thread_index;
66 ASSERT (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID);
68 clib_memset (ctx, 0xfb, sizeof (*ctx));
69 pool_put (quic_main.ctx_pool[thread_index], ctx);
73 quic_ctx_get (u32 ctx_index, u32 thread_index)
75 return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
79 quic_ctx_get_if_valid (u32 ctx_index, u32 thread_index)
81 if (pool_is_free_index (quic_main.ctx_pool[thread_index], ctx_index))
83 return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
87 quic_get_conn_ctx (quicly_conn_t * conn)
90 conn_data = (u64) * quicly_get_data (conn);
91 return quic_ctx_get (conn_data & UINT32_MAX, conn_data >> 32);
95 quic_store_conn_ctx (quicly_conn_t * conn, quic_ctx_t * ctx)
97 *quicly_get_data (conn) =
98 (void *) (((u64) ctx->c_thread_index) << 32 | (u64) ctx->c_c_index);
102 quic_ctx_is_stream (quic_ctx_t * ctx)
104 return (ctx->flags & QUIC_F_IS_STREAM);
108 quic_ctx_is_listener (quic_ctx_t * ctx)
110 return (ctx->flags & QUIC_F_IS_LISTENER);
114 get_stream_session_from_stream (quicly_stream_t * stream)
117 quic_stream_data_t *stream_data;
119 stream_data = (quic_stream_data_t *) stream->data;
120 ctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
121 return session_get (ctx->c_s_index, stream_data->thread_index);
125 quic_make_connection_key (clib_bihash_kv_16_8_t * kv,
126 const quicly_cid_plaintext_t * id)
128 kv->key[0] = ((u64) id->master_id) << 32 | (u64) id->thread_id;
129 kv->key[1] = id->node_id;
133 quic_sendable_packet_count (session_t * udp_session)
136 u32 packet_size = QUIC_MAX_PACKET_SIZE + SESSION_CONN_HDR_LEN;
137 max_enqueue = svm_fifo_max_enqueue (udp_session->tx_fifo);
138 return clib_min (max_enqueue / packet_size, QUIC_SEND_PACKET_VEC_SIZE);
141 static quicly_context_t *
142 quic_get_quicly_ctx_from_ctx (quic_ctx_t * ctx)
144 return ctx->quicly_ctx;
147 static quicly_context_t *
148 quic_get_quicly_ctx_from_udp (u64 udp_session_handle)
150 session_t *udp_session = session_get_from_handle (udp_session_handle);
152 quic_ctx_get (udp_session->opaque, udp_session->thread_index);
153 return ctx->quicly_ctx;
157 quic_set_udp_tx_evt (session_t * udp_session)
160 if (svm_fifo_set_event (udp_session->tx_fifo))
161 rv = session_send_io_evt_to_thread (udp_session->tx_fifo,
163 if (PREDICT_FALSE (rv))
164 clib_warning ("Event enqueue errored %d", rv);
168 quic_stop_ctx_timer (quic_ctx_t * ctx)
170 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
171 if (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID)
173 tw = &quic_main.wrk_ctx[ctx->c_thread_index].timer_wheel;
174 tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle);
175 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
176 QUIC_DBG (4, "Stopping timer for ctx %u", ctx->c_c_index);
179 /* QUIC protocol actions */
182 quic_ack_rx_data (session_t * stream_session)
187 quicly_stream_t *stream;
188 quic_stream_data_t *stream_data;
190 sctx = quic_ctx_get (stream_session->connection_index,
191 stream_session->thread_index);
192 ASSERT (quic_ctx_is_stream (sctx));
193 stream = sctx->stream;
194 stream_data = (quic_stream_data_t *) stream->data;
196 f = stream_session->rx_fifo;
197 max_deq = svm_fifo_max_dequeue (f);
199 ASSERT (stream_data->app_rx_data_len >= max_deq);
200 quicly_stream_sync_recvbuf (stream, stream_data->app_rx_data_len - max_deq);
201 QUIC_DBG (3, "Acking %u bytes", stream_data->app_rx_data_len - max_deq);
202 stream_data->app_rx_data_len = max_deq;
206 quic_disconnect_transport (quic_ctx_t * ctx)
208 QUIC_DBG (2, "Disconnecting transport 0x%lx", ctx->udp_session_handle);
209 vnet_disconnect_args_t a = {
210 .handle = ctx->udp_session_handle,
211 .app_index = quic_main.app_index,
214 if (vnet_disconnect_session (&a))
215 clib_warning ("UDP session 0x%lx disconnect errored",
216 ctx->udp_session_handle);
220 quic_connection_delete (quic_ctx_t * ctx)
222 clib_bihash_kv_16_8_t kv;
225 QUIC_DBG (2, "Deleting connection %u", ctx->c_c_index);
227 ASSERT (!quic_ctx_is_stream (ctx));
228 quic_stop_ctx_timer (ctx);
230 /* Delete the connection from the connection map */
232 quic_make_connection_key (&kv, quicly_get_master_id (conn));
233 QUIC_DBG (2, "Deleting conn with id %lu %lu from map", kv.key[0],
235 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 0 /* is_add */ );
237 quic_disconnect_transport (ctx);
240 quicly_free (ctx->conn);
242 session_transport_delete_notify (&ctx->connection);
246 quic_increment_counter (u8 evt, u8 val)
248 vlib_main_t *vm = vlib_get_main ();
249 vlib_node_increment_counter (vm, quic_input_node.index, evt, val);
253 * Called when quicly return an error
254 * This function interacts tightly with quic_proto_on_close
257 quic_connection_closed (quic_ctx_t * ctx)
259 QUIC_DBG (2, "QUIC connection %u/%u closed", ctx->c_thread_index,
262 /* TODO if connection is not established, just delete the session? */
263 /* Actually should send connect or accept error */
265 switch (ctx->conn_state)
267 case QUIC_CONN_STATE_READY:
268 /* Error on an opened connection (timeout...)
269 This puts the session in closing state, we should receive a notification
270 when the app has closed its session */
271 session_transport_reset_notify (&ctx->connection);
272 /* This ensures we delete the connection when the app confirms the close */
273 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED;
275 case QUIC_CONN_STATE_PASSIVE_CLOSING:
276 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED;
277 /* quic_proto_on_close will eventually be called when the app confirms the close
278 , we delete the connection at that point */
280 case QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED:
281 /* App already confirmed close, we can delete the connection */
282 quic_connection_delete (ctx);
284 case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED:
287 case QUIC_CONN_STATE_ACTIVE_CLOSING:
288 quic_connection_delete (ctx);
291 QUIC_DBG (0, "BUG %d", ctx->conn_state);
297 quic_send_datagram (session_t * udp_session, quicly_datagram_t * packet)
300 session_dgram_hdr_t hdr;
303 transport_connection_t *tc;
305 len = packet->data.len;
306 f = udp_session->tx_fifo;
307 tc = session_get_transport (udp_session);
308 max_enqueue = svm_fifo_max_enqueue (f);
309 if (max_enqueue < SESSION_CONN_HDR_LEN + len)
311 QUIC_ERR ("Too much data to send, max_enqueue %u, len %u",
312 max_enqueue, len + SESSION_CONN_HDR_LEN);
313 return QUIC_ERROR_FULL_FIFO;
316 /* Build packet header for fifo */
317 hdr.data_length = len;
319 hdr.is_ip4 = tc->is_ip4;
320 clib_memcpy (&hdr.lcl_ip, &tc->lcl_ip, sizeof (ip46_address_t));
321 hdr.lcl_port = tc->lcl_port;
323 /* Read dest address from quicly-provided sockaddr */
326 ASSERT (packet->dest.sa.sa_family == AF_INET);
327 struct sockaddr_in *sa4 = (struct sockaddr_in *) &packet->dest.sa;
328 hdr.rmt_port = sa4->sin_port;
329 hdr.rmt_ip.ip4.as_u32 = sa4->sin_addr.s_addr;
333 ASSERT (packet->dest.sa.sa_family == AF_INET6);
334 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &packet->dest.sa;
335 hdr.rmt_port = sa6->sin6_port;
336 clib_memcpy (&hdr.rmt_ip.ip6, &sa6->sin6_addr, 16);
339 ret = svm_fifo_enqueue (f, sizeof (hdr), (u8 *) & hdr);
340 if (ret != sizeof (hdr))
342 QUIC_ERR ("Not enough space to enqueue header");
343 return QUIC_ERROR_FULL_FIFO;
345 ret = svm_fifo_enqueue (f, len, packet->data.base);
348 QUIC_ERR ("Not enough space to enqueue payload");
349 return QUIC_ERROR_FULL_FIFO;
352 quic_increment_counter (QUIC_ERROR_TX_PACKETS, 1);
358 quic_send_packets (quic_ctx_t * ctx)
360 quicly_datagram_t *packets[QUIC_SEND_PACKET_VEC_SIZE];
361 session_t *udp_session;
363 size_t num_packets, i, max_packets;
364 quicly_packet_allocator_t *pa;
365 quicly_context_t *quicly_context;
368 /* We have sctx, get qctx */
369 if (quic_ctx_is_stream (ctx))
370 ctx = quic_ctx_get (ctx->quic_connection_ctx_id, ctx->c_thread_index);
372 ASSERT (!quic_ctx_is_stream (ctx));
374 udp_session = session_get_from_handle_if_valid (ctx->udp_session_handle);
383 /* TODO : quicly can assert it can send min_packets up to 2 */
384 if (quic_sendable_packet_count (udp_session) < 2)
387 quicly_context = quic_get_quicly_ctx_from_ctx (ctx);
390 clib_warning ("Tried to send packets on non existing app worker %u",
391 ctx->parent_app_wrk_id);
392 quic_connection_delete (ctx);
395 pa = quicly_context->packet_allocator;
398 max_packets = quic_sendable_packet_count (udp_session);
401 num_packets = max_packets;
402 if ((err = quicly_send (conn, packets, &num_packets)))
405 for (i = 0; i != num_packets; ++i)
407 if ((err = quic_send_datagram (udp_session, packets[i])))
410 pa->free_packet (pa, packets[i]);
413 while (num_packets > 0 && num_packets == max_packets);
416 quic_set_udp_tx_evt (udp_session);
418 QUIC_DBG (3, "%u[TX] %u[RX]", svm_fifo_max_dequeue (udp_session->tx_fifo),
419 svm_fifo_max_dequeue (udp_session->rx_fifo));
420 quic_update_timer (ctx);
424 if (err && err != QUICLY_ERROR_PACKET_IGNORED
425 && err != QUICLY_ERROR_FREE_CONNECTION)
426 clib_warning ("Quic error '%U'.", quic_format_err, err);
427 quic_connection_closed (ctx);
431 /* Quicly callbacks */
434 quic_on_stream_destroy (quicly_stream_t * stream, int err)
436 quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
437 quic_ctx_t *sctx = quic_ctx_get (stream_data->ctx_id,
438 stream_data->thread_index);
439 session_t *stream_session = session_get (sctx->c_s_index,
440 sctx->c_thread_index);
441 QUIC_DBG (2, "DESTROYED_STREAM: session 0x%lx (%U)",
442 session_handle (stream_session), quic_format_err, err);
444 stream_session->session_state = SESSION_STATE_CLOSED;
445 session_transport_delete_notify (&sctx->connection);
447 quic_ctx_free (sctx);
448 clib_mem_free (stream->data);
452 quic_on_stop_sending (quicly_stream_t * stream, int err)
455 quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
456 quic_ctx_t *sctx = quic_ctx_get (stream_data->ctx_id,
457 stream_data->thread_index);
458 session_t *stream_session = session_get (sctx->c_s_index,
459 sctx->c_thread_index);
460 clib_warning ("(NOT IMPLEMENTD) STOP_SENDING: session 0x%lx (%U)",
461 session_handle (stream_session), quic_format_err, err);
463 /* TODO : handle STOP_SENDING */
468 quic_on_receive_reset (quicly_stream_t * stream, int err)
470 quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
471 quic_ctx_t *sctx = quic_ctx_get (stream_data->ctx_id,
472 stream_data->thread_index);
474 session_t *stream_session = session_get (sctx->c_s_index,
475 sctx->c_thread_index);
476 clib_warning ("RESET_STREAM: session 0x%lx (%U)",
477 session_handle (stream_session), quic_format_err, err);
479 session_transport_closing_notify (&sctx->connection);
484 quic_on_receive (quicly_stream_t * stream, size_t off, const void *src,
487 QUIC_DBG (3, "received data: %lu bytes, offset %lu", len, off);
490 session_t *stream_session;
491 app_worker_t *app_wrk;
493 quic_stream_data_t *stream_data;
496 stream_data = (quic_stream_data_t *) stream->data;
497 sctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
498 stream_session = session_get (sctx->c_s_index, stream_data->thread_index);
499 f = stream_session->rx_fifo;
501 max_enq = svm_fifo_max_enqueue_prod (f);
502 QUIC_DBG (3, "Enqueuing %u at off %u in %u space", len, off, max_enq);
503 /* Handle duplicate packet/chunk from quicly */
504 if (off < stream_data->app_rx_data_len)
506 QUIC_DBG (3, "Session [idx %u, app_wrk %u, thread %u, rx-fifo 0x%llx]: "
507 "DUPLICATE PACKET (max_enq %u, len %u, "
508 "app_rx_data_len %u, off %u, ToBeNQ %u)",
509 stream_session->session_index,
510 stream_session->app_wrk_index,
511 stream_session->thread_index, f,
512 max_enq, len, stream_data->app_rx_data_len, off,
513 off - stream_data->app_rx_data_len + len);
516 if (PREDICT_FALSE ((off - stream_data->app_rx_data_len + len) > max_enq))
518 QUIC_ERR ("Session [idx %u, app_wrk %u, thread %u, rx-fifo 0x%llx]: "
519 "RX FIFO IS FULL (max_enq %u, len %u, "
520 "app_rx_data_len %u, off %u, ToBeNQ %u)",
521 stream_session->session_index,
522 stream_session->app_wrk_index,
523 stream_session->thread_index, f,
524 max_enq, len, stream_data->app_rx_data_len, off,
525 off - stream_data->app_rx_data_len + len);
528 if (off == stream_data->app_rx_data_len)
530 /* Streams live on the same thread so (f, stream_data) should stay consistent */
531 rlen = svm_fifo_enqueue (f, len, (u8 *) src);
532 QUIC_DBG (3, "Session [idx %u, app_wrk %u, ti %u, rx-fifo 0x%llx]: "
533 "Enqueuing %u (rlen %u) at off %u in %u space, ",
534 stream_session->session_index,
535 stream_session->app_wrk_index,
536 stream_session->thread_index, f, len, rlen, off, max_enq);
537 stream_data->app_rx_data_len += rlen;
538 ASSERT (rlen >= len);
539 app_wrk = app_worker_get_if_valid (stream_session->app_wrk_index);
540 if (PREDICT_TRUE (app_wrk != 0))
542 rv = app_worker_lock_and_send_event (app_wrk, stream_session,
545 QUIC_ERR ("Failed to ping app for RX");
547 quic_ack_rx_data (stream_session);
551 rlen = svm_fifo_enqueue_with_offset (f,
552 off - stream_data->app_rx_data_len,
560 quic_fifo_egress_shift (quicly_stream_t * stream, size_t delta)
562 session_t *stream_session;
566 stream_session = get_stream_session_from_stream (stream);
567 f = stream_session->tx_fifo;
569 rv = svm_fifo_dequeue_drop (f, delta);
570 ASSERT (rv == delta);
571 quicly_stream_sync_sendbuf (stream, 0);
575 quic_fifo_egress_emit (quicly_stream_t * stream, size_t off, void *dst,
576 size_t * len, int *wrote_all)
578 session_t *stream_session;
580 u32 deq_max, first_deq, max_rd_chunk, rem_offset;
582 stream_session = get_stream_session_from_stream (stream);
583 f = stream_session->tx_fifo;
585 QUIC_DBG (3, "Emitting %u, offset %u", *len, off);
587 deq_max = svm_fifo_max_dequeue_cons (f);
588 ASSERT (off <= deq_max);
589 if (off + *len < deq_max)
596 *len = deq_max - off;
597 QUIC_DBG (3, "Wrote ALL, %u", *len);
600 /* TODO, use something like : return svm_fifo_peek (f, off, *len, dst); */
601 max_rd_chunk = svm_fifo_max_read_chunk (f);
604 if (off < max_rd_chunk)
606 first_deq = clib_min (*len, max_rd_chunk - off);
607 clib_memcpy_fast (dst, svm_fifo_head (f) + off, first_deq);
610 if (max_rd_chunk < off + *len)
612 rem_offset = max_rd_chunk < off ? off - max_rd_chunk : 0;
613 clib_memcpy_fast (dst + first_deq, f->head_chunk->data + rem_offset,
620 static const quicly_stream_callbacks_t quic_stream_callbacks = {
621 .on_destroy = quic_on_stream_destroy,
622 .on_send_shift = quic_fifo_egress_shift,
623 .on_send_emit = quic_fifo_egress_emit,
624 .on_send_stop = quic_on_stop_sending,
625 .on_receive = quic_on_receive,
626 .on_receive_reset = quic_on_receive_reset
630 quic_on_stream_open (quicly_stream_open_t * self, quicly_stream_t * stream)
632 session_t *stream_session, *quic_session;
633 quic_stream_data_t *stream_data;
634 app_worker_t *app_wrk;
635 quic_ctx_t *qctx, *sctx;
639 QUIC_DBG (2, "on_stream_open called");
640 stream->data = clib_mem_alloc (sizeof (quic_stream_data_t));
641 stream->callbacks = &quic_stream_callbacks;
642 /* Notify accept on parent qsession, but only if this is not a locally
643 * initiated stream */
644 if (quicly_stream_is_self_initiated (stream))
647 sctx_id = quic_ctx_alloc (vlib_get_thread_index ());
648 qctx = quic_get_conn_ctx (stream->conn);
650 /* Might need to signal that the connection is ready if the first thing the
651 * server does is open a stream */
652 quic_check_quic_session_connected (qctx);
653 /* ctx might be invalidated */
654 qctx = quic_get_conn_ctx (stream->conn);
656 stream_session = session_alloc (qctx->c_thread_index);
657 QUIC_DBG (2, "ACCEPTED stream_session 0x%lx ctx %u",
658 session_handle (stream_session), sctx_id);
659 sctx = quic_ctx_get (sctx_id, qctx->c_thread_index);
660 sctx->parent_app_wrk_id = qctx->parent_app_wrk_id;
661 sctx->parent_app_id = qctx->parent_app_id;
662 sctx->quic_connection_ctx_id = qctx->c_c_index;
663 sctx->c_c_index = sctx_id;
664 sctx->c_s_index = stream_session->session_index;
665 sctx->stream = stream;
666 sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
667 sctx->flags |= QUIC_F_IS_STREAM;
669 stream_data = (quic_stream_data_t *) stream->data;
670 stream_data->ctx_id = sctx_id;
671 stream_data->thread_index = sctx->c_thread_index;
672 stream_data->app_rx_data_len = 0;
674 sctx->c_s_index = stream_session->session_index;
675 stream_session->session_state = SESSION_STATE_CREATED;
676 stream_session->app_wrk_index = sctx->parent_app_wrk_id;
677 stream_session->connection_index = sctx->c_c_index;
678 stream_session->session_type =
679 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4);
680 quic_session = session_get (qctx->c_s_index, qctx->c_thread_index);
681 stream_session->listener_handle = listen_session_get_handle (quic_session);
683 app_wrk = app_worker_get (stream_session->app_wrk_index);
684 if ((rv = app_worker_init_connected (app_wrk, stream_session)))
686 QUIC_ERR ("failed to allocate fifos");
687 session_free (stream_session);
688 quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR);
689 return 0; /* Frame is still valid */
691 svm_fifo_add_want_deq_ntf (stream_session->rx_fifo,
692 SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL |
693 SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY);
695 if ((rv = app_worker_accept_notify (app_wrk, stream_session)))
697 QUIC_ERR ("failed to notify accept worker app");
698 session_free_w_fifos (stream_session);
699 quicly_reset_stream (stream, QUIC_APP_ACCEPT_NOTIFY_ERROR);
700 return 0; /* Frame is still valid */
707 quic_on_closed_by_peer (quicly_closed_by_peer_t * self, quicly_conn_t * conn,
708 int code, uint64_t frame_type,
709 const char *reason, size_t reason_len)
711 quic_ctx_t *ctx = quic_get_conn_ctx (conn);
713 session_t *quic_session = session_get (ctx->c_s_index, ctx->c_thread_index);
714 clib_warning ("Session 0x%lx closed by peer (%U) %.*s ",
715 session_handle (quic_session), quic_format_err, code,
718 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING;
719 session_transport_closing_notify (&ctx->connection);
722 static quicly_stream_open_t on_stream_open = { quic_on_stream_open };
723 static quicly_closed_by_peer_t on_closed_by_peer = { quic_on_closed_by_peer };
728 quic_get_thread_time (u8 thread_index)
730 return quic_main.wrk_ctx[thread_index].time_now;
734 quic_get_time (quicly_now_t * self)
736 u8 thread_index = vlib_get_thread_index ();
737 return quic_get_thread_time (thread_index);
740 static quicly_now_t quicly_vpp_now_cb = { quic_get_time };
743 quic_set_time_now (u32 thread_index)
745 vlib_main_t *vlib_main = vlib_get_main ();
746 f64 time = vlib_time_now (vlib_main);
747 quic_main.wrk_ctx[thread_index].time_now = (int64_t) (time * 1000.f);
748 return quic_main.wrk_ctx[thread_index].time_now;
751 /* Transport proto callback */
753 quic_update_time (f64 now, u8 thread_index)
755 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
757 tw = &quic_main.wrk_ctx[thread_index].timer_wheel;
758 quic_set_time_now (thread_index);
759 tw_timer_expire_timers_1t_3w_1024sl_ov (tw, now);
763 quic_timer_expired (u32 conn_index)
766 QUIC_DBG (4, "Timer expired for conn %u at %ld", conn_index,
767 quic_get_time (NULL));
768 ctx = quic_ctx_get (conn_index, vlib_get_thread_index ());
769 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
770 quic_send_packets (ctx);
774 quic_update_timer (quic_ctx_t * ctx)
776 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
777 int64_t next_timeout, next_interval;
778 session_t *quic_session;
781 /* This timeout is in ms which is the unit of our timer */
782 next_timeout = quicly_get_first_timeout (ctx->conn);
783 next_interval = next_timeout - quic_get_time (NULL);
785 if (next_timeout == 0 || next_interval <= 0)
787 if (ctx->c_s_index == QUIC_SESSION_INVALID)
793 quic_session = session_get (ctx->c_s_index, ctx->c_thread_index);
794 if (svm_fifo_set_event (quic_session->tx_fifo))
796 rv = session_send_io_evt_to_thread_custom (quic_session,
797 quic_session->thread_index,
798 SESSION_IO_EVT_BUILTIN_TX);
799 if (PREDICT_FALSE (rv))
800 QUIC_ERR ("Failed to enqueue builtin_tx %d", rv);
806 tw = &quic_main.wrk_ctx[vlib_get_thread_index ()].timer_wheel;
808 QUIC_DBG (4, "Timer set to %ld (int %ld) for ctx %u", next_timeout,
809 next_interval, ctx->c_c_index);
811 if (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID)
813 if (next_timeout == INT64_MAX)
815 QUIC_DBG (4, "timer for ctx %u already stopped", ctx->c_c_index);
818 ctx->timer_handle = tw_timer_start_1t_3w_1024sl_ov (tw, ctx->c_c_index,
823 if (next_timeout == INT64_MAX)
825 quic_stop_ctx_timer (ctx);
828 tw_timer_update_1t_3w_1024sl_ov (tw, ctx->timer_handle,
835 quic_expired_timers_dispatch (u32 * expired_timers)
839 for (i = 0; i < vec_len (expired_timers); i++)
841 quic_timer_expired (expired_timers[i]);
846 quic_encrypt_ticket_cb (ptls_encrypt_ticket_t * _self, ptls_t * tls,
847 int is_encrypt, ptls_buffer_t * dst, ptls_iovec_t src)
849 quic_session_cache_t *self = (void *) _self;
855 /* replace the cached entry along with a newly generated session id */
856 clib_mem_free (self->data.base);
857 if ((self->data.base = clib_mem_alloc (src.len)) == NULL)
858 return PTLS_ERROR_NO_MEMORY;
860 ptls_get_context (tls)->random_bytes (self->id, sizeof (self->id));
861 clib_memcpy (self->data.base, src.base, src.len);
862 self->data.len = src.len;
864 /* store the session id in buffer */
865 if ((ret = ptls_buffer_reserve (dst, sizeof (self->id))) != 0)
867 clib_memcpy (dst->base + dst->off, self->id, sizeof (self->id));
868 dst->off += sizeof (self->id);
874 /* check if session id is the one stored in cache */
875 if (src.len != sizeof (self->id))
876 return PTLS_ERROR_SESSION_NOT_FOUND;
877 if (clib_memcmp (self->id, src.base, sizeof (self->id)) != 0)
878 return PTLS_ERROR_SESSION_NOT_FOUND;
880 /* return the cached value */
881 if ((ret = ptls_buffer_reserve (dst, self->data.len)) != 0)
883 clib_memcpy (dst->base + dst->off, self->data.base, self->data.len);
884 dst->off += self->data.len;
891 quic_store_quicly_ctx (application_t * app, u32 ckpair_index,
894 quic_main_t *qm = &quic_main;
895 quicly_context_t *quicly_ctx;
896 ptls_iovec_t key_vec;
897 app_cert_key_pair_t *ckpair;
902 if (crypto_engine == CRYPTO_ENGINE_NONE)
904 QUIC_DBG (2, "No crypto engine specified, using %d", crypto_engine);
905 crypto_engine = qm->default_crypto_engine;
907 if (!clib_bitmap_get (qm->available_crypto_engines, crypto_engine))
909 QUIC_ERR ("Quic does not support crypto engine %d", crypto_engine);
910 return VNET_API_ERROR_MISSING_CERT_KEY;
913 quicly_ctx_data_t *quicly_ctx_data =
914 clib_mem_alloc (sizeof (quicly_ctx_data_t));
915 clib_memset (quicly_ctx_data, 0, sizeof (*quicly_ctx_data)); /* picotls depends on this */
916 quicly_ctx = &quicly_ctx_data->quicly_ctx;
917 ptls_context_t *ptls_ctx = &quicly_ctx_data->ptls_ctx;
918 ptls_ctx->random_bytes = ptls_openssl_random_bytes;
919 ptls_ctx->get_time = &ptls_get_time;
920 ptls_ctx->key_exchanges = ptls_openssl_key_exchanges;
921 ptls_ctx->cipher_suites = qm->quic_ciphers[crypto_engine];
922 ptls_ctx->certificates.list = NULL;
923 ptls_ctx->certificates.count = 0;
924 ptls_ctx->esni = NULL;
925 ptls_ctx->on_client_hello = NULL;
926 ptls_ctx->emit_certificate = NULL;
927 ptls_ctx->sign_certificate = NULL;
928 ptls_ctx->verify_certificate = NULL;
929 ptls_ctx->ticket_lifetime = 86400;
930 ptls_ctx->max_early_data_size = 8192;
931 ptls_ctx->hkdf_label_prefix__obsolete = NULL;
932 ptls_ctx->require_dhe_on_psk = 1;
933 ptls_ctx->encrypt_ticket = &qm->session_cache.super;
935 app->quicly_ctx = (u64 *) quicly_ctx;
936 clib_memcpy (quicly_ctx, &quicly_spec_context, sizeof (quicly_context_t));
938 quicly_ctx->max_packet_size = QUIC_MAX_PACKET_SIZE;
939 quicly_ctx->tls = ptls_ctx;
940 quicly_ctx->stream_open = &on_stream_open;
941 quicly_ctx->closed_by_peer = &on_closed_by_peer;
942 quicly_ctx->now = &quicly_vpp_now_cb;
943 quicly_amend_ptls_context (quicly_ctx->tls);
945 quicly_ctx->transport_params.max_data = QUIC_INT_MAX;
946 quicly_ctx->transport_params.max_streams_uni = (uint64_t) 1 << 60;
947 quicly_ctx->transport_params.max_streams_bidi = (uint64_t) 1 << 60;
949 /* max_enq is FIFO_SIZE - 1 */
950 max_enq = app->sm_properties.rx_fifo_size - 1;
951 quicly_ctx->transport_params.max_stream_data.bidi_local = max_enq;
952 max_enq = app->sm_properties.tx_fifo_size - 1;
953 quicly_ctx->transport_params.max_stream_data.bidi_remote = max_enq;
954 quicly_ctx->transport_params.max_stream_data.uni = QUIC_INT_MAX;
956 quicly_ctx->tls->random_bytes (quicly_ctx_data->cid_key, 16);
957 quicly_ctx_data->cid_key[16] = 0;
958 key_vec = ptls_iovec_init (quicly_ctx_data->cid_key,
959 strlen (quicly_ctx_data->cid_key));
960 quicly_ctx->cid_encryptor =
961 quicly_new_default_cid_encryptor (&ptls_openssl_bfecb,
962 &ptls_openssl_aes128ecb,
963 &ptls_openssl_sha256, key_vec);
965 ckpair = app_cert_key_pair_get_if_valid (ckpair_index);
966 if (!ckpair || !ckpair->key || !ckpair->cert)
968 QUIC_ERR ("Wrong ckpair id %d\n", ckpair_index);
971 if (load_bio_private_key (quicly_ctx->tls, (char *) ckpair->key))
973 QUIC_ERR ("failed to read private key from app configuration\n");
976 if (load_bio_certificate_chain (quicly_ctx->tls, (char *) ckpair->cert))
978 QUIC_ERR ("failed to load certificate\n");
984 clib_mem_free (quicly_ctx_data);
985 return VNET_API_ERROR_MISSING_CERT_KEY;
988 /* Transport proto functions */
991 quic_connect_stream (session_t * quic_session, u32 opaque)
993 uint64_t quic_session_handle;
994 session_t *stream_session;
995 quic_stream_data_t *stream_data;
996 quicly_stream_t *stream;
998 app_worker_t *app_wrk;
999 quic_ctx_t *qctx, *sctx;
1003 /* Find base session to which the user want to attach a stream */
1004 quic_session_handle = session_handle (quic_session);
1005 QUIC_DBG (2, "Opening new stream (qsession %u)", quic_session_handle);
1007 if (session_type_transport_proto (quic_session->session_type) !=
1008 TRANSPORT_PROTO_QUIC)
1010 QUIC_ERR ("received incompatible session");
1014 app_wrk = app_worker_get_if_valid (quic_session->app_wrk_index);
1017 QUIC_ERR ("Invalid app worker :(");
1021 sctx_index = quic_ctx_alloc (quic_session->thread_index); /* Allocate before we get pointers */
1022 sctx = quic_ctx_get (sctx_index, quic_session->thread_index);
1023 qctx = quic_ctx_get (quic_session->connection_index,
1024 quic_session->thread_index);
1025 if (quic_ctx_is_stream (qctx))
1027 QUIC_ERR ("session is a stream");
1028 quic_ctx_free (sctx);
1032 sctx->parent_app_wrk_id = qctx->parent_app_wrk_id;
1033 sctx->parent_app_id = qctx->parent_app_id;
1034 sctx->quic_connection_ctx_id = qctx->c_c_index;
1035 sctx->c_c_index = sctx_index;
1036 sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1037 sctx->flags |= QUIC_F_IS_STREAM;
1041 if (!conn || !quicly_connection_is_ready (conn))
1044 if ((rv = quicly_open_stream (conn, &stream, 0 /* uni */ )))
1046 QUIC_DBG (2, "Stream open failed with %d", rv);
1049 sctx->stream = stream;
1051 QUIC_DBG (2, "Opened stream %d, creating session", stream->stream_id);
1053 stream_session = session_alloc (qctx->c_thread_index);
1054 QUIC_DBG (2, "Allocated stream_session 0x%lx ctx %u",
1055 session_handle (stream_session), sctx_index);
1056 stream_session->app_wrk_index = app_wrk->wrk_index;
1057 stream_session->connection_index = sctx_index;
1058 stream_session->listener_handle = quic_session_handle;
1059 stream_session->session_type =
1060 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4);
1062 sctx->c_s_index = stream_session->session_index;
1064 if (app_worker_init_connected (app_wrk, stream_session))
1066 QUIC_ERR ("failed to app_worker_init_connected");
1067 quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR);
1068 session_free_w_fifos (stream_session);
1069 quic_ctx_free (sctx);
1070 return app_worker_connect_notify (app_wrk, NULL, opaque);
1073 svm_fifo_add_want_deq_ntf (stream_session->rx_fifo,
1074 SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL |
1075 SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY);
1077 stream_session->session_state = SESSION_STATE_READY;
1078 if (app_worker_connect_notify (app_wrk, stream_session, opaque))
1080 QUIC_ERR ("failed to notify app");
1081 quicly_reset_stream (stream, QUIC_APP_CONNECT_NOTIFY_ERROR);
1082 session_free_w_fifos (stream_session);
1083 quic_ctx_free (sctx);
1086 stream_data = (quic_stream_data_t *) stream->data;
1087 stream_data->ctx_id = sctx->c_c_index;
1088 stream_data->thread_index = sctx->c_thread_index;
1089 stream_data->app_rx_data_len = 0;
1094 quic_connect_connection (session_endpoint_cfg_t * sep)
1096 vnet_connect_args_t _cargs, *cargs = &_cargs;
1097 quic_main_t *qm = &quic_main;
1099 app_worker_t *app_wrk;
1104 clib_memset (cargs, 0, sizeof (*cargs));
1105 ctx_index = quic_ctx_alloc (vlib_get_thread_index ());
1106 ctx = quic_ctx_get (ctx_index, vlib_get_thread_index ());
1107 ctx->parent_app_wrk_id = sep->app_wrk_index;
1108 ctx->c_s_index = QUIC_SESSION_INVALID;
1109 ctx->c_c_index = ctx_index;
1110 ctx->udp_is_ip4 = sep->is_ip4;
1111 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1112 ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE;
1113 ctx->client_opaque = sep->opaque;
1114 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1116 ctx->srv_hostname = format (0, "%v", sep->hostname);
1118 /* needed by quic for crypto + determining client / server */
1119 ctx->srv_hostname = format (0, "%U", format_ip46_address,
1120 &sep->ip, sep->is_ip4);
1121 vec_terminate_c_string (ctx->srv_hostname);
1123 clib_memcpy (&cargs->sep, sep, sizeof (session_endpoint_cfg_t));
1124 cargs->sep.transport_proto = TRANSPORT_PROTO_UDPC;
1125 cargs->app_index = qm->app_index;
1126 cargs->api_context = ctx_index;
1128 app_wrk = app_worker_get (sep->app_wrk_index);
1129 app = application_get (app_wrk->app_index);
1130 ctx->parent_app_id = app_wrk->app_index;
1131 cargs->sep_ext.ns_index = app->ns_index;
1134 quic_store_quicly_ctx (app, sep->ckpair_index, sep->crypto_engine)))
1136 /* Also store it in ctx for convenience
1137 * Waiting for crypto_ctx logic */
1138 ctx->quicly_ctx = (quicly_context_t *) app->quicly_ctx;
1140 if ((error = vnet_connect (cargs)))
1147 quic_connect (transport_endpoint_cfg_t * tep)
1149 QUIC_DBG (2, "Called quic_connect");
1150 session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) tep;
1151 session_t *quic_session;
1152 sep = (session_endpoint_cfg_t *) tep;
1154 quic_session = session_get_from_handle_if_valid (sep->parent_handle);
1156 return quic_connect_stream (quic_session, sep->opaque);
1158 return quic_connect_connection (sep);
1162 quic_proto_on_close (u32 ctx_index, u32 thread_index)
1164 quic_ctx_t *ctx = quic_ctx_get_if_valid (ctx_index, thread_index);
1168 session_t *stream_session = session_get (ctx->c_s_index,
1169 ctx->c_thread_index);
1170 clib_warning ("Closing session 0x%lx", session_handle (stream_session));
1172 if (quic_ctx_is_stream (ctx))
1174 quicly_stream_t *stream = ctx->stream;
1175 quicly_reset_stream (stream, QUIC_APP_ERROR_CLOSE_NOTIFY);
1176 quic_send_packets (ctx);
1180 switch (ctx->conn_state)
1182 case QUIC_CONN_STATE_READY:
1183 ctx->conn_state = QUIC_CONN_STATE_ACTIVE_CLOSING;
1184 quicly_conn_t *conn = ctx->conn;
1185 /* Start connection closing. Keep sending packets until quicly_send
1186 returns QUICLY_ERROR_FREE_CONNECTION */
1187 quicly_close (conn, QUIC_APP_ERROR_CLOSE_NOTIFY, "Closed by peer");
1188 /* This also causes all streams to be closed (and the cb called) */
1189 quic_send_packets (ctx);
1191 case QUIC_CONN_STATE_PASSIVE_CLOSING:
1192 ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED;
1193 /* send_packets will eventually return an error, we delete the conn at
1196 case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED:
1197 quic_connection_delete (ctx);
1200 QUIC_DBG (0, "BUG");
1206 quic_start_listen (u32 quic_listen_session_index, transport_endpoint_t * tep)
1208 vnet_listen_args_t _bargs, *args = &_bargs;
1209 quic_main_t *qm = &quic_main;
1210 session_handle_t udp_handle;
1211 session_endpoint_cfg_t *sep;
1212 session_t *udp_listen_session;
1213 app_worker_t *app_wrk;
1217 app_listener_t *app_listener;
1219 sep = (session_endpoint_cfg_t *) tep;
1220 app_wrk = app_worker_get (sep->app_wrk_index);
1221 /* We need to call this because we call app_worker_init_connected in
1222 * quic_accept_stream, which assumes the connect segment manager exists */
1223 app_worker_alloc_connects_segment_manager (app_wrk);
1224 app = application_get (app_wrk->app_index);
1225 QUIC_DBG (2, "Called quic_start_listen for app %d", app_wrk->app_index);
1227 if (quic_store_quicly_ctx (app, sep->ckpair_index, sep->crypto_engine))
1230 sep->transport_proto = TRANSPORT_PROTO_UDPC;
1231 clib_memset (args, 0, sizeof (*args));
1232 args->app_index = qm->app_index;
1233 args->sep_ext = *sep;
1234 args->sep_ext.ns_index = app->ns_index;
1235 if (vnet_listen (args))
1238 lctx_index = quic_ctx_alloc (0);
1239 udp_handle = args->handle;
1240 app_listener = app_listener_get_w_handle (udp_handle);
1241 udp_listen_session = app_listener_get_session (app_listener);
1242 udp_listen_session->opaque = lctx_index;
1244 lctx = quic_ctx_get (lctx_index, 0);
1245 lctx->flags |= QUIC_F_IS_LISTENER;
1246 /* Also store it in ctx for convenience
1247 * Waiting for crypto_ctx logic */
1248 lctx->quicly_ctx = (quicly_context_t *) app->quicly_ctx;
1250 clib_memcpy (&lctx->c_rmt_ip, &args->sep.peer.ip, sizeof (ip46_address_t));
1251 clib_memcpy (&lctx->c_lcl_ip, &args->sep.ip, sizeof (ip46_address_t));
1252 lctx->c_rmt_port = args->sep.peer.port;
1253 lctx->c_lcl_port = args->sep.port;
1254 lctx->c_is_ip4 = args->sep.is_ip4;
1255 lctx->c_fib_index = args->sep.fib_index;
1256 lctx->c_proto = TRANSPORT_PROTO_QUIC;
1257 lctx->parent_app_wrk_id = sep->app_wrk_index;
1258 lctx->parent_app_id = app_wrk->app_index;
1259 lctx->udp_session_handle = udp_handle;
1260 lctx->c_s_index = quic_listen_session_index;
1262 QUIC_DBG (2, "Listening UDP session 0x%lx",
1263 session_handle (udp_listen_session));
1264 QUIC_DBG (2, "Listening QUIC session 0x%lx", quic_listen_session_index);
1269 quic_stop_listen (u32 lctx_index)
1271 QUIC_DBG (2, "Called quic_stop_listen");
1273 lctx = quic_ctx_get (lctx_index, 0);
1274 ASSERT (quic_ctx_is_listener (lctx));
1275 vnet_unlisten_args_t a = {
1276 .handle = lctx->udp_session_handle,
1277 .app_index = quic_main.app_index,
1278 .wrk_map_index = 0 /* default wrk */
1280 if (vnet_unlisten (&a))
1281 clib_warning ("unlisten errored");
1283 /* TODO: crypto state cleanup */
1285 quic_ctx_free (lctx);
1289 static transport_connection_t *
1290 quic_connection_get (u32 ctx_index, u32 thread_index)
1293 ctx = quic_ctx_get (ctx_index, thread_index);
1294 return &ctx->connection;
1297 static transport_connection_t *
1298 quic_listener_get (u32 listener_index)
1300 QUIC_DBG (2, "Called quic_listener_get");
1302 ctx = quic_ctx_get (listener_index, 0);
1303 return &ctx->connection;
1307 format_quic_ctx (u8 * s, va_list * args)
1309 quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
1310 u32 verbose = va_arg (*args, u32);
1315 str = format (str, "[#%d][Q] ", ctx->c_thread_index);
1317 if (quic_ctx_is_listener (ctx))
1318 str = format (str, "Listener, UDP %ld", ctx->udp_session_handle);
1319 else if (quic_ctx_is_stream (ctx))
1320 str = format (str, "Stream %ld conn %d",
1321 ctx->stream->stream_id, ctx->quic_connection_ctx_id);
1322 else /* connection */
1323 str = format (str, "Conn %d UDP %d", ctx->c_c_index,
1324 ctx->udp_session_handle);
1326 str = format (str, " app %d wrk %d", ctx->parent_app_id,
1327 ctx->parent_app_wrk_id);
1330 s = format (s, "%-50s%-15d", str, ctx->conn_state);
1332 s = format (s, "%s\n", str);
1338 format_quic_connection (u8 * s, va_list * args)
1340 u32 qc_index = va_arg (*args, u32);
1341 u32 thread_index = va_arg (*args, u32);
1342 u32 verbose = va_arg (*args, u32);
1343 quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index);
1344 s = format (s, "%U", format_quic_ctx, ctx, verbose);
1349 format_quic_half_open (u8 * s, va_list * args)
1351 u32 qc_index = va_arg (*args, u32);
1352 u32 thread_index = va_arg (*args, u32);
1353 quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index);
1354 s = format (s, "[#%d][Q] half-open app %u", thread_index,
1355 ctx->parent_app_id);
1361 format_quic_listener (u8 * s, va_list * args)
1363 u32 tci = va_arg (*args, u32);
1364 u32 thread_index = va_arg (*args, u32);
1365 u32 verbose = va_arg (*args, u32);
1366 quic_ctx_t *ctx = quic_ctx_get (tci, thread_index);
1367 s = format (s, "%U", format_quic_ctx, ctx, verbose);
1371 /* Session layer callbacks */
1374 quic_build_sockaddr (struct sockaddr *sa, socklen_t * salen,
1375 ip46_address_t * addr, u16 port, u8 is_ip4)
1379 struct sockaddr_in *sa4 = (struct sockaddr_in *) sa;
1380 sa4->sin_family = AF_INET;
1381 sa4->sin_port = port;
1382 sa4->sin_addr.s_addr = addr->ip4.as_u32;
1383 *salen = sizeof (struct sockaddr_in);
1387 struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa;
1388 sa6->sin6_family = AF_INET6;
1389 sa6->sin6_port = port;
1390 clib_memcpy (&sa6->sin6_addr, &addr->ip6, 16);
1391 *salen = sizeof (struct sockaddr_in6);
1396 quic_on_quic_session_connected (quic_ctx_t * ctx)
1398 session_t *quic_session;
1399 app_worker_t *app_wrk;
1400 u32 ctx_id = ctx->c_c_index;
1401 u32 thread_index = ctx->c_thread_index;
1404 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id);
1407 quic_disconnect_transport (ctx);
1411 quic_session = session_alloc (thread_index);
1413 QUIC_DBG (2, "Allocated quic session 0x%lx", session_handle (quic_session));
1414 ctx->c_s_index = quic_session->session_index;
1415 quic_session->app_wrk_index = ctx->parent_app_wrk_id;
1416 quic_session->connection_index = ctx->c_c_index;
1417 quic_session->listener_handle = SESSION_INVALID_HANDLE;
1418 quic_session->session_type =
1419 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4);
1421 if (app_worker_init_connected (app_wrk, quic_session))
1423 QUIC_ERR ("failed to app_worker_init_connected");
1424 quic_proto_on_close (ctx_id, thread_index);
1425 return app_worker_connect_notify (app_wrk, NULL, ctx->client_opaque);
1428 quic_session->session_state = SESSION_STATE_CONNECTING;
1429 if ((rv = app_worker_connect_notify (app_wrk, quic_session,
1430 ctx->client_opaque)))
1432 QUIC_ERR ("failed to notify app %d", rv);
1433 quic_proto_on_close (ctx_id, thread_index);
1437 /* If the app opens a stream in its callback it may invalidate ctx */
1438 ctx = quic_ctx_get (ctx_id, thread_index);
1440 * app_worker_connect_notify() might have reallocated pool, reload
1441 * quic_session pointer
1443 quic_session = session_get (ctx->c_s_index, thread_index);
1444 quic_session->session_state = SESSION_STATE_LISTENING;
1450 quic_check_quic_session_connected (quic_ctx_t * ctx)
1452 /* Called when we need to trigger quic session connected
1453 * we may call this function on the server side / at
1456 /* Conn may be set to null if the connection is terminated */
1457 if (!ctx->conn || ctx->conn_state != QUIC_CONN_STATE_HANDSHAKE)
1459 if (!quicly_connection_is_ready (ctx->conn))
1461 ctx->conn_state = QUIC_CONN_STATE_READY;
1462 if (!quicly_is_client (ctx->conn))
1464 return quic_on_quic_session_connected (ctx);
1468 quic_receive_connection (void *arg)
1470 u32 new_ctx_id, thread_index = vlib_get_thread_index ();
1471 quic_ctx_t *temp_ctx, *new_ctx;
1472 clib_bihash_kv_16_8_t kv;
1473 quicly_conn_t *conn;
1474 session_t *udp_session;
1477 new_ctx_id = quic_ctx_alloc (thread_index);
1478 new_ctx = quic_ctx_get (new_ctx_id, thread_index);
1480 QUIC_DBG (2, "Received conn %u (now %u)", temp_ctx->c_thread_index,
1484 clib_memcpy (new_ctx, temp_ctx, sizeof (quic_ctx_t));
1485 clib_mem_free (temp_ctx);
1487 new_ctx->c_thread_index = thread_index;
1488 new_ctx->c_c_index = new_ctx_id;
1490 conn = new_ctx->conn;
1491 quic_store_conn_ctx (conn, new_ctx);
1492 quic_make_connection_key (&kv, quicly_get_master_id (conn));
1493 kv.value = ((u64) thread_index) << 32 | (u64) new_ctx_id;
1494 QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1495 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1496 new_ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1497 quic_update_timer (new_ctx);
1499 /* Trigger write on this connection if necessary */
1500 udp_session = session_get_from_handle (new_ctx->udp_session_handle);
1501 udp_session->opaque = new_ctx_id;
1502 udp_session->flags &= ~SESSION_F_IS_MIGRATING;
1503 if (svm_fifo_max_dequeue (udp_session->tx_fifo))
1504 quic_set_udp_tx_evt (udp_session);
1508 quic_transfer_connection (u32 ctx_index, u32 dest_thread)
1510 quic_ctx_t *ctx, *temp_ctx;
1511 u32 thread_index = vlib_get_thread_index ();
1513 QUIC_DBG (2, "Transferring conn %u to thread %u", ctx_index, dest_thread);
1515 temp_ctx = clib_mem_alloc (sizeof (quic_ctx_t));
1517 ctx = quic_ctx_get (ctx_index, thread_index);
1519 clib_memcpy (temp_ctx, ctx, sizeof (quic_ctx_t));
1521 quic_stop_ctx_timer (ctx);
1522 quic_ctx_free (ctx);
1524 /* Send connection to destination thread */
1525 session_send_rpc_evt_to_thread (dest_thread, quic_receive_connection,
1530 quic_udp_session_connected_callback (u32 quic_app_index, u32 ctx_index,
1531 session_t * udp_session, u8 is_fail)
1533 QUIC_DBG (2, "QSession is now connected (id %u)",
1534 udp_session->session_index);
1535 /* This should always be called before quic_connect returns since UDP always
1536 * connects instantly. */
1537 clib_bihash_kv_16_8_t kv;
1538 struct sockaddr_in6 sa6;
1539 struct sockaddr *sa = (struct sockaddr *) &sa6;
1541 transport_connection_t *tc;
1542 app_worker_t *app_wrk;
1543 quicly_conn_t *conn;
1545 u32 thread_index = vlib_get_thread_index ();
1547 quicly_context_t *quicly_ctx;
1550 ctx = quic_ctx_get (ctx_index, thread_index);
1554 app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id);
1557 api_context = ctx->c_s_index;
1558 app_worker_connect_notify (app_wrk, 0, api_context);
1563 ctx->c_thread_index = thread_index;
1564 ctx->c_c_index = ctx_index;
1566 QUIC_DBG (2, "Quic connect returned %u. New ctx [%u]%x",
1567 is_fail, thread_index, (ctx) ? ctx_index : ~0);
1569 ctx->udp_session_handle = session_handle (udp_session);
1570 udp_session->opaque = ctx_index;
1572 /* Init QUIC lib connection
1573 * Generate required sockaddr & salen */
1574 tc = session_get_transport (udp_session);
1575 quic_build_sockaddr (sa, &salen, &tc->rmt_ip, tc->rmt_port, tc->is_ip4);
1577 quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx);
1578 ret = quicly_connect (&ctx->conn, quicly_ctx, (char *) ctx->srv_hostname,
1579 sa, NULL, &quic_main.next_cid, ptls_iovec_init (NULL,
1581 &quic_main.hs_properties, NULL);
1582 ++quic_main.next_cid.master_id;
1583 /* Save context handle in quicly connection */
1584 quic_store_conn_ctx (ctx->conn, ctx);
1587 /* Register connection in connections map */
1589 quic_make_connection_key (&kv, quicly_get_master_id (conn));
1590 kv.value = ((u64) thread_index) << 32 | (u64) ctx_index;
1591 QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1592 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1594 /* UDP stack quirk? preemptively transfer connection if that happens */
1595 if (udp_session->thread_index != thread_index)
1596 quic_transfer_connection (ctx_index, udp_session->thread_index);
1598 quic_send_packets (ctx);
1604 quic_udp_session_disconnect_callback (session_t * s)
1606 clib_warning ("UDP session disconnected???");
1610 quic_udp_session_cleanup_callback (session_t * udp_session,
1611 session_cleanup_ntf_t ntf)
1615 if (ntf != SESSION_CLEANUP_SESSION)
1618 ctx = quic_ctx_get (udp_session->opaque, udp_session->thread_index);
1619 quic_stop_ctx_timer (ctx);
1620 quic_ctx_free (ctx);
1624 quic_udp_session_reset_callback (session_t * s)
1626 clib_warning ("UDP session reset???");
1630 quic_udp_session_migrate_callback (session_t * s, session_handle_t new_sh)
1632 u32 new_thread = session_thread_from_handle (new_sh);
1635 QUIC_ERR ("Session %x migrated to %lx", s->session_index, new_sh);
1636 ASSERT (vlib_get_thread_index () == s->thread_index);
1637 ctx = quic_ctx_get (s->opaque, s->thread_index);
1638 ASSERT (ctx->udp_session_handle == session_handle (s));
1640 ctx->udp_session_handle = new_sh;
1642 s->opaque = 0xfeedface;
1644 quic_transfer_connection (ctx->c_c_index, new_thread);
1648 quic_udp_session_accepted_callback (session_t * udp_session)
1650 /* New UDP connection, try to accept it */
1653 quic_ctx_t *ctx, *lctx;
1654 session_t *udp_listen_session;
1655 u32 thread_index = vlib_get_thread_index ();
1657 udp_listen_session =
1658 listen_session_get_from_handle (udp_session->listener_handle);
1660 ctx_index = quic_ctx_alloc (thread_index);
1661 ctx = quic_ctx_get (ctx_index, thread_index);
1662 ctx->c_thread_index = udp_session->thread_index;
1663 ctx->c_c_index = ctx_index;
1664 ctx->c_s_index = QUIC_SESSION_INVALID;
1665 ctx->udp_session_handle = session_handle (udp_session);
1666 QUIC_DBG (2, "ACCEPTED UDP 0x%lx", ctx->udp_session_handle);
1667 ctx->listener_ctx_id = udp_listen_session->opaque;
1668 lctx = quic_ctx_get (udp_listen_session->opaque,
1669 udp_listen_session->thread_index);
1670 ctx->udp_is_ip4 = lctx->c_is_ip4;
1671 ctx->parent_app_id = lctx->parent_app_id;
1672 ctx->parent_app_wrk_id = lctx->parent_app_wrk_id;
1673 ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1674 ctx->conn_state = QUIC_CONN_STATE_OPENED;
1675 ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1677 /* Also store it in ctx for convenience
1678 * Waiting for crypto_ctx logic */
1679 ctx->quicly_ctx = lctx->quicly_ctx;
1681 udp_session->opaque = ctx_index;
1683 /* Put this ctx in the "opening" pool */
1684 pool_get (quic_main.wrk_ctx[ctx->c_thread_index].opening_ctx_pool,
1686 *pool_index = ctx_index;
1688 /* TODO timeout to delete these if they never connect */
1693 quic_add_segment_callback (u32 client_index, u64 seg_handle)
1695 /* No-op for builtin */
1700 quic_del_segment_callback (u32 client_index, u64 seg_handle)
1702 /* No-op for builtin */
1707 quic_custom_app_rx_callback (transport_connection_t * tc)
1710 session_t *stream_session = session_get (tc->s_index, tc->thread_index);
1711 QUIC_DBG (3, "Received app READ notification");
1712 quic_ack_rx_data (stream_session);
1713 svm_fifo_reset_has_deq_ntf (stream_session->rx_fifo);
1715 /* Need to send packets (acks may never be sent otherwise) */
1716 ctx = quic_ctx_get (stream_session->connection_index,
1717 stream_session->thread_index);
1718 quic_send_packets (ctx);
1723 quic_custom_tx_callback (void *s, u32 max_burst_size)
1725 session_t *stream_session = (session_t *) s;
1726 quicly_stream_t *stream;
1731 (stream_session->session_state >= SESSION_STATE_TRANSPORT_CLOSING))
1733 ctx = quic_ctx_get (stream_session->connection_index,
1734 stream_session->thread_index);
1735 if (PREDICT_FALSE (!quic_ctx_is_stream (ctx)))
1737 goto tx_end; /* Most probably a reschedule */
1740 QUIC_DBG (3, "Stream TX event");
1741 quic_ack_rx_data (stream_session);
1742 if (!svm_fifo_max_dequeue (stream_session->tx_fifo))
1745 stream = ctx->stream;
1746 if (!quicly_sendstate_is_open (&stream->sendstate))
1748 QUIC_ERR ("Warning: tried to send on closed stream");
1752 if ((rv = quicly_stream_sync_sendbuf (stream, 1)) != 0)
1756 quic_send_packets (ctx);
1762 * Returns 0 if a matching connection is found and is on the right thread.
1763 * Otherwise returns -1.
1764 * If a connection is found, even on the wrong thread, ctx_thread and ctx_index
1768 quic_find_packet_ctx (u32 * ctx_thread, u32 * ctx_index,
1769 struct sockaddr *sa, socklen_t salen,
1770 quicly_decoded_packet_t * packet,
1771 u32 caller_thread_index)
1774 quicly_conn_t *conn_;
1775 clib_bihash_kv_16_8_t kv;
1776 clib_bihash_16_8_t *h;
1778 h = &quic_main.connection_hash;
1779 quic_make_connection_key (&kv, &packet->cid.dest.plaintext);
1780 QUIC_DBG (3, "Searching conn with id %lu %lu", kv.key[0], kv.key[1]);
1782 if (clib_bihash_search_16_8 (h, &kv, &kv) == 0)
1784 u32 index = kv.value & UINT32_MAX;
1785 u32 thread_id = kv.value >> 32;
1786 /* Check if this connection belongs to this thread, otherwise
1787 * ask for it to be moved */
1788 if (thread_id != caller_thread_index)
1790 QUIC_DBG (2, "Connection is on wrong thread");
1791 /* Cannot make full check with quicly_is_destination... */
1793 *ctx_thread = thread_id;
1796 ctx_ = quic_ctx_get (index, vlib_get_thread_index ());
1798 if (conn_ && quicly_is_destination (conn_, NULL, sa, packet))
1800 QUIC_DBG (3, "Connection found");
1802 *ctx_thread = thread_id;
1806 QUIC_DBG (3, "connection not found");
1811 quic_accept_connection (u32 ctx_index, struct sockaddr *sa,
1812 socklen_t salen, quicly_decoded_packet_t packet)
1814 u32 thread_index = vlib_get_thread_index ();
1815 quicly_context_t *quicly_ctx;
1816 session_t *quic_session;
1817 clib_bihash_kv_16_8_t kv;
1818 app_worker_t *app_wrk;
1819 quicly_conn_t *conn;
1824 /* new connection, accept and create context if packet is valid
1825 * TODO: check if socket is actually listening? */
1826 ctx = quic_ctx_get (ctx_index, thread_index);
1827 quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx);
1828 if ((rv = quicly_accept (&conn, quicly_ctx, NULL, sa,
1829 &packet, NULL, &quic_main.next_cid, NULL)))
1831 /* Invalid packet, pass */
1832 assert (conn == NULL);
1833 QUIC_ERR ("Accept failed with %d", rv);
1834 /* TODO: cleanup created quic ctx and UDP session */
1837 assert (conn != NULL);
1839 ++quic_main.next_cid.master_id;
1840 /* Save ctx handle in quicly connection */
1841 quic_store_conn_ctx (conn, ctx);
1843 ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE;
1845 quic_session = session_alloc (ctx->c_thread_index);
1846 QUIC_DBG (2, "Allocated quic_session, 0x%lx ctx %u",
1847 session_handle (quic_session), ctx->c_c_index);
1848 quic_session->session_state = SESSION_STATE_LISTENING;
1849 ctx->c_s_index = quic_session->session_index;
1851 lctx = quic_ctx_get (ctx->listener_ctx_id, 0);
1853 quic_session->app_wrk_index = lctx->parent_app_wrk_id;
1854 quic_session->connection_index = ctx->c_c_index;
1855 quic_session->session_type =
1856 session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4);
1857 quic_session->listener_handle = lctx->c_s_index;
1859 /* TODO: don't alloc fifos when we don't transfer data on this session
1860 * but we still need fifos for the events? */
1861 if ((rv = app_worker_init_accepted (quic_session)))
1863 QUIC_ERR ("failed to allocate fifos");
1864 session_free (quic_session);
1867 app_wrk = app_worker_get (quic_session->app_wrk_index);
1868 if ((rv = app_worker_accept_notify (app_wrk, quic_session)))
1870 QUIC_ERR ("failed to notify accept worker app");
1874 /* Register connection in connections map */
1875 quic_make_connection_key (&kv, quicly_get_master_id (conn));
1876 kv.value = ((u64) thread_index) << 32 | (u64) ctx_index;
1877 clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1878 QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1880 return quic_send_packets (ctx);
1884 quic_reset_connection (u64 udp_session_handle,
1885 struct sockaddr *sa, socklen_t salen,
1886 quicly_decoded_packet_t packet)
1888 /* short header packet; potentially a dead connection. No need to check the
1889 * length of the incoming packet, because loop is prevented by authenticating
1890 * the CID (by checking node_id and thread_id). If the peer is also sending a
1891 * reset, then the next CID is highly likely to contain a non-authenticating
1893 QUIC_DBG (2, "Sending stateless reset");
1895 quicly_datagram_t *dgram;
1896 session_t *udp_session;
1897 quicly_context_t *quicly_ctx;
1898 if (packet.cid.dest.plaintext.node_id != 0
1899 || packet.cid.dest.plaintext.thread_id != 0)
1901 quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle);
1902 dgram = quicly_send_stateless_reset (quicly_ctx, sa, NULL,
1903 &packet.cid.dest.plaintext);
1906 udp_session = session_get_from_handle (udp_session_handle);
1907 rv = quic_send_datagram (udp_session, dgram);
1908 quic_set_udp_tx_evt (udp_session);
1913 quic_process_one_rx_packet (u64 udp_session_handle, svm_fifo_t * f,
1914 u32 * fifo_offset, u32 * max_packet, u32 packet_n,
1915 quic_rx_packet_ctx_t * packet_ctx)
1917 session_dgram_hdr_t ph;
1918 quic_ctx_t *ctx = NULL;
1920 struct sockaddr_in6 sa6;
1921 struct sockaddr *sa = (struct sockaddr *) &sa6;
1925 packet_ctx->thread_index = UINT32_MAX;
1926 packet_ctx->ctx_index = UINT32_MAX;
1927 u32 thread_index = vlib_get_thread_index ();
1928 u32 *opening_ctx_pool, *ctx_index_ptr;
1929 u32 cur_deq = svm_fifo_max_dequeue (f) - *fifo_offset;
1930 quicly_context_t *quicly_ctx;
1934 *max_packet = packet_n + 1;
1938 if (cur_deq < SESSION_CONN_HDR_LEN)
1940 QUIC_ERR ("Not enough data for even a header in RX");
1943 ret = svm_fifo_peek (f, *fifo_offset, SESSION_CONN_HDR_LEN, (u8 *) & ph);
1944 if (ret != SESSION_CONN_HDR_LEN)
1946 QUIC_ERR ("Not enough data for header in RX");
1949 ASSERT (ph.data_offset == 0);
1950 full_len = ph.data_length + SESSION_CONN_HDR_LEN;
1951 if (full_len > cur_deq)
1953 QUIC_ERR ("Not enough data in fifo RX");
1957 /* Quicly can read len bytes from the fifo at offset:
1958 * ph.data_offset + SESSION_CONN_HDR_LEN */
1959 ret = svm_fifo_peek (f, SESSION_CONN_HDR_LEN + *fifo_offset,
1960 ph.data_length, packet_ctx->data);
1961 if (ret != ph.data_length)
1963 QUIC_ERR ("Not enough data peeked in RX");
1967 quic_increment_counter (QUIC_ERROR_RX_PACKETS, 1);
1969 quic_build_sockaddr (sa, &salen, &ph.rmt_ip, ph.rmt_port, ph.is_ip4);
1970 quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle);
1971 plen = quicly_decode_packet (quicly_ctx, &packet_ctx->packet,
1972 packet_ctx->data, ph.data_length);
1974 if (plen == SIZE_MAX)
1976 *fifo_offset += SESSION_CONN_HDR_LEN + ph.data_length;
1980 err = quic_find_packet_ctx (&packet_ctx->thread_index,
1981 &packet_ctx->ctx_index, sa, salen,
1982 &packet_ctx->packet, thread_index);
1985 ctx = quic_ctx_get (packet_ctx->ctx_index, thread_index);
1986 rv = quicly_receive (ctx->conn, NULL, sa, &packet_ctx->packet);
1988 QUIC_ERR ("quicly_receive errored %U", quic_format_err, rv);
1990 else if (packet_ctx->ctx_index != UINT32_MAX)
1992 /* Connection found but on wrong thread, ask move */
1993 *max_packet = packet_n + 1;
1996 else if ((packet_ctx->packet.octets.base[0] & QUICLY_PACKET_TYPE_BITMASK) ==
1997 QUICLY_PACKET_TYPE_INITIAL)
1999 /* Try to find matching "opening" ctx */
2000 opening_ctx_pool = quic_main.wrk_ctx[thread_index].opening_ctx_pool;
2003 pool_foreach (ctx_index_ptr, opening_ctx_pool,
2005 ctx = quic_ctx_get (*ctx_index_ptr, thread_index);
2006 if (ctx->udp_session_handle == udp_session_handle)
2008 /* Right ctx found, create conn & remove from pool */
2009 quic_accept_connection (*ctx_index_ptr, sa, salen, packet_ctx->packet);
2010 *max_packet = packet_n + 1;
2011 packet_ctx->thread_index = thread_index;
2012 packet_ctx->ctx_index = *ctx_index_ptr;
2013 pool_put (opening_ctx_pool, ctx_index_ptr);
2018 QUIC_ERR ("Missing opening ctx (in %d) Thread %d UDP 0x%lx",
2019 pool_elts (opening_ctx_pool), thread_index,
2020 udp_session_handle);
2024 quic_reset_connection (udp_session_handle, sa, salen,
2025 packet_ctx->packet);
2029 *fifo_offset += SESSION_CONN_HDR_LEN + ph.data_length;
2034 quic_udp_session_rx_callback (session_t * udp_session)
2036 /* Read data from UDP rx_fifo and pass it to the quicly conn. */
2037 quic_ctx_t *ctx = NULL;
2040 u64 udp_session_handle = session_handle (udp_session);
2042 u32 thread_index = vlib_get_thread_index ();
2043 quic_rx_packet_ctx_t packets_ctx[16];
2044 u32 i, fifo_offset, max_packets;
2046 if (udp_session->flags & SESSION_F_IS_MIGRATING)
2048 QUIC_DBG (3, "RX on migrating udp session");
2054 udp_session = session_get_from_handle (udp_session_handle); /* session alloc might have happened */
2055 f = udp_session->rx_fifo;
2056 max_deq = svm_fifo_max_dequeue (f);
2062 for (i = 0; i < max_packets; i++)
2063 quic_process_one_rx_packet (udp_session_handle, f, &fifo_offset,
2064 &max_packets, i, &packets_ctx[i]);
2066 for (i = 0; i < max_packets; i++)
2068 if (packets_ctx[i].thread_index != thread_index)
2070 ctx = quic_ctx_get (packets_ctx[i].ctx_index,
2071 packets_ctx[i].thread_index);
2072 quic_check_quic_session_connected (ctx);
2073 ctx = quic_ctx_get (packets_ctx[i].ctx_index,
2074 packets_ctx[i].thread_index);
2075 quic_send_packets (ctx);
2077 svm_fifo_dequeue_drop (f, fifo_offset);
2083 quic_common_get_transport_endpoint (quic_ctx_t * ctx,
2084 transport_endpoint_t * tep, u8 is_lcl)
2086 session_t *udp_session;
2087 if (!quic_ctx_is_stream (ctx))
2089 udp_session = session_get_from_handle (ctx->udp_session_handle);
2090 session_get_endpoint (udp_session, tep, is_lcl);
2095 quic_get_transport_listener_endpoint (u32 listener_index,
2096 transport_endpoint_t * tep, u8 is_lcl)
2099 app_listener_t *app_listener;
2100 session_t *udp_listen_session;
2101 ctx = quic_ctx_get (listener_index, vlib_get_thread_index ());
2102 if (quic_ctx_is_listener (ctx))
2104 app_listener = app_listener_get_w_handle (ctx->udp_session_handle);
2105 udp_listen_session = app_listener_get_session (app_listener);
2106 return session_get_endpoint (udp_listen_session, tep, is_lcl);
2108 quic_common_get_transport_endpoint (ctx, tep, is_lcl);
2112 quic_get_transport_endpoint (u32 ctx_index, u32 thread_index,
2113 transport_endpoint_t * tep, u8 is_lcl)
2116 ctx = quic_ctx_get (ctx_index, thread_index);
2117 quic_common_get_transport_endpoint (ctx, tep, is_lcl);
2121 static session_cb_vft_t quic_app_cb_vft = {
2122 .session_accept_callback = quic_udp_session_accepted_callback,
2123 .session_disconnect_callback = quic_udp_session_disconnect_callback,
2124 .session_connected_callback = quic_udp_session_connected_callback,
2125 .session_reset_callback = quic_udp_session_reset_callback,
2126 .session_migrate_callback = quic_udp_session_migrate_callback,
2127 .add_segment_callback = quic_add_segment_callback,
2128 .del_segment_callback = quic_del_segment_callback,
2129 .builtin_app_rx_callback = quic_udp_session_rx_callback,
2130 .session_cleanup_callback = quic_udp_session_cleanup_callback,
2133 static const transport_proto_vft_t quic_proto = {
2134 .connect = quic_connect,
2135 .close = quic_proto_on_close,
2136 .start_listen = quic_start_listen,
2137 .stop_listen = quic_stop_listen,
2138 .get_connection = quic_connection_get,
2139 .get_listener = quic_listener_get,
2140 .update_time = quic_update_time,
2141 .app_rx_evt = quic_custom_app_rx_callback,
2142 .custom_tx = quic_custom_tx_callback,
2143 .format_connection = format_quic_connection,
2144 .format_half_open = format_quic_half_open,
2145 .format_listener = format_quic_listener,
2146 .get_transport_endpoint = quic_get_transport_endpoint,
2147 .get_transport_listener_endpoint = quic_get_transport_listener_endpoint,
2148 .transport_options = {
2149 .tx_type = TRANSPORT_TX_INTERNAL,
2150 .service_type = TRANSPORT_SERVICE_APP,
2156 quic_register_cipher_suite (crypto_engine_type_t type,
2157 ptls_cipher_suite_t ** ciphers)
2159 quic_main_t *qm = &quic_main;
2160 vec_validate (qm->quic_ciphers, type);
2161 clib_bitmap_set (qm->available_crypto_engines, type, 1);
2162 qm->quic_ciphers[type] = ciphers;
2166 quic_update_fifo_size ()
2168 quic_main_t *qm = &quic_main;
2169 segment_manager_props_t *seg_mgr_props =
2170 application_get_segment_manager_properties (qm->app_index);
2175 ("error while getting segment_manager_props_t, can't update fifo-size");
2179 seg_mgr_props->tx_fifo_size = qm->udp_fifo_size;
2180 seg_mgr_props->rx_fifo_size = qm->udp_fifo_size;
2183 static clib_error_t *
2184 quic_init (vlib_main_t * vm)
2186 u32 segment_size = 256 << 20;
2187 vlib_thread_main_t *vtm = vlib_get_thread_main ();
2188 tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
2189 vnet_app_attach_args_t _a, *a = &_a;
2190 u64 options[APP_OPTIONS_N_OPTIONS];
2191 quic_main_t *qm = &quic_main;
2194 num_threads = 1 /* main thread */ + vtm->n_threads;
2196 clib_memset (a, 0, sizeof (*a));
2197 clib_memset (options, 0, sizeof (options));
2199 a->session_cb_vft = &quic_app_cb_vft;
2200 a->api_client_index = APP_INVALID_INDEX;
2201 a->options = options;
2202 a->name = format (0, "quic");
2203 a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
2204 a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = segment_size;
2205 a->options[APP_OPTIONS_RX_FIFO_SIZE] = qm->udp_fifo_size;
2206 a->options[APP_OPTIONS_TX_FIFO_SIZE] = qm->udp_fifo_size;
2207 a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = qm->udp_fifo_prealloc;
2208 a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
2209 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
2210 a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP;
2212 if (vnet_application_attach (a))
2214 clib_warning ("failed to attach quic app");
2215 return clib_error_return (0, "failed to attach quic app");
2218 vec_validate (qm->ctx_pool, num_threads - 1);
2219 vec_validate (qm->wrk_ctx, num_threads - 1);
2220 /* Timer wheels, one per thread. */
2221 for (i = 0; i < num_threads; i++)
2223 tw = &qm->wrk_ctx[i].timer_wheel;
2224 tw_timer_wheel_init_1t_3w_1024sl_ov (tw, quic_expired_timers_dispatch,
2225 1e-3 /* timer period 1ms */ , ~0);
2226 tw->last_run_time = vlib_time_now (vlib_get_main ());
2229 clib_bihash_init_16_8 (&qm->connection_hash, "quic connections", 1024,
2233 qm->app_index = a->app_index;
2234 qm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
2235 / QUIC_TSTAMP_RESOLUTION;
2236 qm->session_cache.super.cb = quic_encrypt_ticket_cb;
2238 transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto,
2239 FIB_PROTOCOL_IP4, ~0);
2240 transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto,
2241 FIB_PROTOCOL_IP6, ~0);
2243 clib_bitmap_alloc (qm->available_crypto_engines,
2244 app_crypto_engine_n_types ());
2245 quic_register_cipher_suite (CRYPTO_ENGINE_VPP, quic_crypto_cipher_suites);
2246 quic_register_cipher_suite (CRYPTO_ENGINE_PICOTLS,
2247 ptls_openssl_cipher_suites);
2248 qm->default_crypto_engine = CRYPTO_ENGINE_PICOTLS;
2253 VLIB_INIT_FUNCTION (quic_init);
2255 static clib_error_t *
2256 quic_plugin_crypto_command_fn (vlib_main_t * vm,
2257 unformat_input_t * input,
2258 vlib_cli_command_t * cmd)
2260 quic_main_t *qm = &quic_main;
2261 if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT)
2262 return clib_error_return (0, "unknown input '%U'",
2263 format_unformat_error, input);
2264 if (unformat (input, "vpp"))
2265 qm->default_crypto_engine = CRYPTO_ENGINE_VPP;
2266 else if (unformat (input, "picotls"))
2267 qm->default_crypto_engine = CRYPTO_ENGINE_PICOTLS;
2269 return clib_error_return (0, "unknown input '%U'",
2270 format_unformat_error, input);
2274 u64 quic_fifosize = 0;
2275 static clib_error_t *
2276 quic_plugin_set_fifo_size_command_fn (vlib_main_t * vm,
2277 unformat_input_t * input,
2278 vlib_cli_command_t * cmd)
2280 quic_main_t *qm = &quic_main;
2281 unformat_input_t _line_input, *line_input = &_line_input;
2284 if (!unformat_user (input, unformat_line_input, line_input))
2287 while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2289 if (unformat (line_input, "%U", unformat_memory_size, &tmp))
2291 if (tmp >= 0x100000000ULL)
2293 return clib_error_return
2294 (0, "fifo-size %llu (0x%llx) too large", tmp, tmp);
2296 qm->udp_fifo_size = tmp;
2297 quic_update_fifo_size ();
2300 return clib_error_return (0, "unknown input '%U'",
2301 format_unformat_error, line_input);
2308 quic_format_ctx_stat (u8 * s, va_list * args)
2310 quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
2311 quicly_stats_t quicly_stats;
2313 quicly_get_stats (ctx->conn, &quicly_stats);
2315 s = format (s, "\n\rQUIC conn stats \n\r");
2318 format (s, "RTT: min:%d, smoothed:%d, variance:%d, latest:%d \n\r",
2319 quicly_stats.rtt.minimum, quicly_stats.rtt.smoothed,
2320 quicly_stats.rtt.variance, quicly_stats.rtt.latest);
2321 s = format (s, "Packet loss:%d \n\r", quicly_stats.num_packets.lost);
2326 static clib_error_t *
2327 quic_plugin_showstats_command_fn (vlib_main_t * vm,
2328 unformat_input_t * input,
2329 vlib_cli_command_t * cmd)
2331 quic_main_t *qm = &quic_main;
2332 quic_ctx_t *ctx = NULL;
2333 u32 num_workers = vlib_num_workers ();
2335 for (int i = 0; i < num_workers + 1; i++)
2338 pool_foreach (ctx, qm->ctx_pool[i],
2340 if(!(ctx->flags & QUIC_F_IS_LISTENER) && !(ctx->flags & QUIC_F_IS_STREAM))
2341 vlib_cli_output (vm, "%U", quic_format_ctx_stat, ctx);
2348 static clib_error_t *
2349 quic_show_ctx_command_fn (vlib_main_t * vm, unformat_input_t * input,
2350 vlib_cli_command_t * cmd)
2352 quic_main_t *qm = &quic_main;
2353 quic_ctx_t *ctx = NULL;
2354 u32 num_workers = vlib_num_workers ();
2356 for (int i = 0; i < num_workers + 1; i++)
2359 pool_foreach (ctx, qm->ctx_pool[i],
2361 vlib_cli_output (vm, "%U", format_quic_ctx, ctx, 1);
2369 VLIB_CLI_COMMAND (quic_plugin_crypto_command, static) =
2371 .path = "quic set crypto api",
2372 .short_help = "quic set crypto api [picotls, vpp]",
2373 .function = quic_plugin_crypto_command_fn,
2375 VLIB_CLI_COMMAND(quic_plugin_set_fifo_size_command, static)=
2377 .path = "quic set fifo-size",
2378 .short_help = "quic set fifo-size N[K|M|G] (default 64K)",
2379 .function = quic_plugin_set_fifo_size_command_fn,
2381 VLIB_CLI_COMMAND(quic_plugin_stats_command, static)=
2383 .path = "show quic stats",
2384 .short_help = "show quic stats",
2385 .function = quic_plugin_showstats_command_fn,
2387 VLIB_CLI_COMMAND(quic_show_ctx_command, static)=
2389 .path = "show quic ctx",
2390 .short_help = "show quic ctx",
2391 .function = quic_show_ctx_command_fn,
2393 VLIB_PLUGIN_REGISTER () =
2395 .version = VPP_BUILD_VER,
2396 .description = "Quic transport protocol",
2397 .default_disabled = 1,
2401 static clib_error_t *
2402 quic_config_fn (vlib_main_t * vm, unformat_input_t * input)
2404 quic_main_t *qm = &quic_main;
2407 qm->udp_fifo_size = QUIC_DEFAULT_FIFO_SIZE;
2408 qm->udp_fifo_prealloc = 0;
2409 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
2411 if (unformat (input, "fifo-size %U", unformat_memory_size, &tmp))
2413 if (tmp >= 0x100000000ULL)
2415 return clib_error_return
2416 (0, "fifo-size %llu (0x%llx) too large", tmp, tmp);
2418 qm->udp_fifo_size = tmp;
2422 (input, "fifo-prealloc %u", &quic_main.udp_fifo_prealloc))
2425 return clib_error_return (0, "unknown input '%U'",
2426 format_unformat_error, input);
2432 VLIB_EARLY_CONFIG_FUNCTION (quic_config_fn, "quic");
2435 quic_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
2436 vlib_frame_t * frame)
2442 VLIB_REGISTER_NODE (quic_input_node) =
2444 .function = quic_node_fn,
2445 .name = "quic-input",
2446 .vector_size = sizeof (u32),
2447 .type = VLIB_NODE_TYPE_INTERNAL,
2448 .n_errors = ARRAY_LEN (quic_error_strings),
2449 .error_strings = quic_error_strings,
2454 * fd.io coding-style-patch-verification: ON
2457 * eval: (c-set-style "gnu")