1/*
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:
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
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.
14 */
15
16#include <sys/socket.h>
17
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>
23
24#include <vppinfra/lock.h>
25
26#include <quic/quic.h>
27#include <quic/certs.h>
28#include <quic/error.h>
29
30#include <quicly/constants.h>
31#include <quicly/defaults.h>
32#include <picotls.h>
33
34#include <quic/quic_crypto.h>
35
36extern quicly_crypto_engine_t quic_crypto_engine;
37
38static char *quic_error_strings[] = {
39#define quic_error(n,s) s,
40#include <quic/quic_error.def>
41#undef quic_error
42};
43
44#define DEFAULT_MAX_PACKETS_PER_KEY 16777216
45
46quic_main_t quic_main;
47static void quic_update_timer (quic_ctx_t * ctx);
48static void quic_check_quic_session_connected (quic_ctx_t * ctx);
49static int quic_reset_connection (u64 udp_session_handle,
50				  quic_rx_packet_ctx_t * pctx);
51static void quic_proto_on_close (u32 ctx_index, u32 thread_index);
52
53static quicly_stream_open_t on_stream_open;
54static quicly_closed_by_peer_t on_closed_by_peer;
55static quicly_now_t quicly_vpp_now_cb;
56
57/* Crypto contexts */
58
59static inline void
60quic_crypto_context_make_key_from_ctx (clib_bihash_kv_24_8_t * kv,
61				       quic_ctx_t * ctx)
62{
63  application_t *app = application_get (ctx->parent_app_id);
64  kv->key[0] = ((u64) ctx->ckpair_index) << 32 | (u64) ctx->crypto_engine;
65  kv->key[1] = app->sm_properties.rx_fifo_size - 1;
66  kv->key[2] = app->sm_properties.tx_fifo_size - 1;
67}
68
69static inline void
70quic_crypto_context_make_key_from_crctx (clib_bihash_kv_24_8_t * kv,
71					 crypto_context_t * crctx)
72{
73  quic_crypto_context_data_t *data =
74    (quic_crypto_context_data_t *) crctx->data;
75  kv->key[0] = ((u64) crctx->ckpair_index) << 32 | (u64) crctx->crypto_engine;
76  kv->key[1] = data->quicly_ctx.transport_params.max_stream_data.bidi_local;
77  kv->key[2] = data->quicly_ctx.transport_params.max_stream_data.bidi_remote;
78}
79
80static void
81quic_crypto_context_free_if_needed (crypto_context_t * crctx, u8 thread_index)
82{
83  quic_main_t *qm = &quic_main;
84  clib_bihash_kv_24_8_t kv;
85  if (crctx->n_subscribers)
86    return;
87  quic_crypto_context_make_key_from_crctx (&kv, crctx);
88  clib_bihash_add_del_24_8 (&qm->wrk_ctx[thread_index].crypto_context_hash,
89			    &kv, 0 /* is_add */ );
90  clib_mem_free (crctx->data);
91  pool_put (qm->wrk_ctx[thread_index].crypto_ctx_pool, crctx);
92}
93
94static quicly_datagram_t *
95quic_alloc_packet (quicly_packet_allocator_t * self, size_t payloadsize)
96{
97  quicly_datagram_t *packet;
98  if ((packet =
99       clib_mem_alloc (sizeof (*packet) + payloadsize +
100		       sizeof (quic_encrypt_cb_ctx))) == NULL)
101    return NULL;
102  packet->data.base =
103    (uint8_t *) packet + sizeof (*packet) + sizeof (quic_encrypt_cb_ctx);
104  quic_encrypt_cb_ctx *encrypt_cb_ctx =
105    (quic_encrypt_cb_ctx *) ((uint8_t *) packet + sizeof (*packet));
106
107  clib_memset (encrypt_cb_ctx, 0, sizeof (*encrypt_cb_ctx));
108  return packet;
109}
110
111static void
112quic_free_packet (quicly_packet_allocator_t * self,
113		  quicly_datagram_t * packet)
114{
115  clib_mem_free (packet);
116}
117
118quicly_packet_allocator_t quic_packet_allocator =
119  { quic_alloc_packet, quic_free_packet };
120
121static int
122quic_app_cert_key_pair_delete_callback (app_cert_key_pair_t * ckpair)
123{
124  quic_main_t *qm = &quic_main;
125  crypto_context_t *crctx;
126  clib_bihash_kv_24_8_t kv;
127  vlib_thread_main_t *vtm = vlib_get_thread_main ();
128  int num_threads = 1 /* main thread */  + vtm->n_threads;
129  int i;
130
131  for (i = 0; i < num_threads; i++)
132    {
133      /* *INDENT-OFF* */
134      pool_foreach (crctx, qm->wrk_ctx[i].crypto_ctx_pool, ({
135	if (crctx->ckpair_index == ckpair->cert_key_index)
136	  {
137	    quic_crypto_context_make_key_from_crctx (&kv, crctx);
138	    clib_bihash_add_del_24_8 (&qm->wrk_ctx[i].crypto_context_hash, &kv, 0 /* is_add */ );
139	  }
140      }));
141      /* *INDENT-ON* */
142    }
143  return 0;
144}
145
146static crypto_context_t *
147quic_crypto_context_alloc (u8 thread_index)
148{
149  quic_main_t *qm = &quic_main;
150  crypto_context_t *crctx;
151  u32 idx;
152
153  pool_get (qm->wrk_ctx[thread_index].crypto_ctx_pool, crctx);
154  clib_memset (crctx, 0, sizeof (*crctx));
155  idx = (crctx - qm->wrk_ctx[thread_index].crypto_ctx_pool);
156  crctx->ctx_index = ((u32) thread_index) << 24 | idx;
157
158  return crctx;
159}
160
161static crypto_context_t *
162quic_crypto_context_get (u32 cr_index, u32 thread_index)
163{
164  quic_main_t *qm = &quic_main;
165  ASSERT (cr_index >> 24 == thread_index);
166  return pool_elt_at_index (qm->wrk_ctx[thread_index].crypto_ctx_pool,
167			    cr_index & 0x00ffffff);
168}
169
170static clib_error_t *
171quic_list_crypto_context_command_fn (vlib_main_t * vm,
172				     unformat_input_t * input,
173				     vlib_cli_command_t * cmd)
174{
175  quic_main_t *qm = &quic_main;
176  crypto_context_t *crctx;
177  vlib_thread_main_t *vtm = vlib_get_thread_main ();
178  int i, num_threads = 1 /* main thread */  + vtm->n_threads;
179  for (i = 0; i < num_threads; i++)
180    {
181      /* *INDENT-OFF* */
182      pool_foreach (crctx, qm->wrk_ctx[i].crypto_ctx_pool, ({
183	vlib_cli_output (vm, "[%d][Q]%U", i, format_crypto_context, crctx);
184      }));
185      /* *INDENT-ON* */
186    }
187  return 0;
188}
189
190static clib_error_t *
191quic_set_max_packets_per_key_fn (vlib_main_t * vm,
192				 unformat_input_t * input,
193				 vlib_cli_command_t * cmd)
194{
195  quic_main_t *qm = &quic_main;
196  unformat_input_t _line_input, *line_input = &_line_input;
197  u64 tmp;
198
199  if (!unformat_user (input, unformat_line_input, line_input))
200    return 0;
201
202  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
203    {
204      if (unformat (line_input, "%U", unformat_memory_size, &tmp))
205	{
206	  qm->max_packets_per_key = tmp;
207	}
208      else
209	return clib_error_return (0, "unknown input '%U'",
210				  format_unformat_error, line_input);
211    }
212
213  return 0;
214}
215
216static void
217quic_release_crypto_context (u32 crypto_context_index, u8 thread_index)
218{
219  crypto_context_t *crctx;
220  crctx = quic_crypto_context_get (crypto_context_index, thread_index);
221  crctx->n_subscribers--;
222  quic_crypto_context_free_if_needed (crctx, thread_index);
223}
224
225static int
226quic_init_crypto_context (crypto_context_t * crctx, quic_ctx_t * ctx)
227{
228  quic_main_t *qm = &quic_main;
229  quicly_context_t *quicly_ctx;
230  ptls_iovec_t key_vec;
231  app_cert_key_pair_t *ckpair;
232  application_t *app;
233  quic_crypto_context_data_t *data;
234  ptls_context_t *ptls_ctx;
235
236  QUIC_DBG (2, "Init quic crctx %d thread %d", crctx->ctx_index,
237	    ctx->c_thread_index);
238
239  data = clib_mem_alloc (sizeof (*data));
240  /* picotls depends on data being zeroed */
241  clib_memset (data, 0, sizeof (*data));
242  crctx->data = (void *) data;
243  quicly_ctx = &data->quicly_ctx;
244  ptls_ctx = &data->ptls_ctx;
245
246  ptls_ctx->random_bytes = ptls_openssl_random_bytes;
247  ptls_ctx->get_time = &ptls_get_time;
248  ptls_ctx->key_exchanges = ptls_openssl_key_exchanges;
249  ptls_ctx->cipher_suites = qm->quic_ciphers[ctx->crypto_engine];
250  ptls_ctx->certificates.list = NULL;
251  ptls_ctx->certificates.count = 0;
252  ptls_ctx->esni = NULL;
253  ptls_ctx->on_client_hello = NULL;
254  ptls_ctx->emit_certificate = NULL;
255  ptls_ctx->sign_certificate = NULL;
256  ptls_ctx->verify_certificate = NULL;
257  ptls_ctx->ticket_lifetime = 86400;
258  ptls_ctx->max_early_data_size = 8192;
259  ptls_ctx->hkdf_label_prefix__obsolete = NULL;
260  ptls_ctx->require_dhe_on_psk = 1;
261  ptls_ctx->encrypt_ticket = &qm->session_cache.super;
262  clib_memcpy (quicly_ctx, &quicly_spec_context, sizeof (quicly_context_t));
263
264  quicly_ctx->max_packet_size = QUIC_MAX_PACKET_SIZE;
265  quicly_ctx->max_packets_per_key = qm->max_packets_per_key;
266  quicly_ctx->tls = ptls_ctx;
267  quicly_ctx->stream_open = &on_stream_open;
268  quicly_ctx->closed_by_peer = &on_closed_by_peer;
269  quicly_ctx->now = &quicly_vpp_now_cb;
270  quicly_amend_ptls_context (quicly_ctx->tls);
271
272  quicly_ctx->packet_allocator = &quic_packet_allocator;
273  quicly_ctx->crypto_engine = &quic_crypto_engine;
274  quicly_ctx->transport_params.max_data = QUIC_INT_MAX;
275  quicly_ctx->transport_params.max_streams_uni = (uint64_t) 1 << 60;
276  quicly_ctx->transport_params.max_streams_bidi = (uint64_t) 1 << 60;
277  quicly_ctx->transport_params.max_idle_timeout = qm->connection_timeout;
278
279  app = application_get (ctx->parent_app_id);
280  quicly_ctx->transport_params.max_stream_data.bidi_local =
281    app->sm_properties.rx_fifo_size - 1;
282  quicly_ctx->transport_params.max_stream_data.bidi_remote =
283    app->sm_properties.tx_fifo_size - 1;
284  quicly_ctx->transport_params.max_stream_data.uni = QUIC_INT_MAX;
285
286  if (!app->quic_iv_set)
287    {
288      ptls_openssl_random_bytes (app->quic_iv, QUIC_IV_LEN - 1);
289      app->quic_iv[QUIC_IV_LEN - 1] = 0;
290      app->quic_iv_set = 1;
291    }
292
293  clib_memcpy (data->cid_key, app->quic_iv, QUIC_IV_LEN);
294  key_vec = ptls_iovec_init (data->cid_key, QUIC_IV_LEN);
295  quicly_ctx->cid_encryptor =
296    quicly_new_default_cid_encryptor (&ptls_openssl_bfecb,
297				      &ptls_openssl_aes128ecb,
298				      &ptls_openssl_sha256, key_vec);
299
300  ckpair = app_cert_key_pair_get_if_valid (crctx->ckpair_index);
301  if (!ckpair || !ckpair->key || !ckpair->cert)
302    {
303      QUIC_DBG (1, "Wrong ckpair id %d\n", crctx->ckpair_index);
304      return -1;
305    }
306  if (load_bio_private_key (quicly_ctx->tls, (char *) ckpair->key))
307    {
308      QUIC_DBG (1, "failed to read private key from app configuration\n");
309      return -1;
310    }
311  if (load_bio_certificate_chain (quicly_ctx->tls, (char *) ckpair->cert))
312    {
313      QUIC_DBG (1, "failed to load certificate\n");
314      return -1;
315    }
316  return 0;
317
318}
319
320static int
321quic_acquire_crypto_context (quic_ctx_t * ctx)
322{
323  quic_main_t *qm = &quic_main;
324  crypto_context_t *crctx;
325  clib_bihash_kv_24_8_t kv;
326
327  if (ctx->crypto_engine == CRYPTO_ENGINE_NONE)
328    {
329      QUIC_DBG (2, "No crypto engine specified, using %d",
330		qm->default_crypto_engine);
331      ctx->crypto_engine = qm->default_crypto_engine;
332    }
333  if (!clib_bitmap_get (qm->available_crypto_engines, ctx->crypto_engine))
334    {
335      QUIC_DBG (1, "Quic does not support crypto engine %d",
336		ctx->crypto_engine);
337      return VNET_API_ERROR_MISSING_CERT_KEY;
338    }
339
340  /* Check for exisiting crypto ctx */
341  quic_crypto_context_make_key_from_ctx (&kv, ctx);
342  if (clib_bihash_search_24_8
343      (&qm->wrk_ctx[ctx->c_thread_index].crypto_context_hash, &kv, &kv) == 0)
344    {
345      crctx = quic_crypto_context_get (kv.value, ctx->c_thread_index);
346      QUIC_DBG (2, "Found exisiting crypto context %d", kv.value);
347      ctx->crypto_context_index = kv.value;
348      crctx->n_subscribers++;
349      return 0;
350    }
351
352  crctx = quic_crypto_context_alloc (ctx->c_thread_index);
353  ctx->crypto_context_index = crctx->ctx_index;
354  kv.value = crctx->ctx_index;
355  crctx->crypto_engine = ctx->crypto_engine;
356  crctx->ckpair_index = ctx->ckpair_index;
357  if (quic_init_crypto_context (crctx, ctx))
358    goto error;
359  if (vnet_app_add_cert_key_interest (ctx->ckpair_index, qm->app_index))
360    goto error;
361  crctx->n_subscribers++;
362  clib_bihash_add_del_24_8 (&qm->
363			    wrk_ctx[ctx->c_thread_index].crypto_context_hash,
364			    &kv, 1 /* is_add */ );
365  return 0;
366
367error:
368  quic_crypto_context_free_if_needed (crctx, ctx->c_thread_index);
369  return VNET_API_ERROR_MISSING_CERT_KEY;
370}
371
372/*  Helper functions */
373
374static u32
375quic_ctx_alloc (u32 thread_index)
376{
377  quic_main_t *qm = &quic_main;
378  quic_ctx_t *ctx;
379
380  pool_get (qm->ctx_pool[thread_index], ctx);
381
382  clib_memset (ctx, 0, sizeof (quic_ctx_t));
383  ctx->c_thread_index = thread_index;
384  ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
385  QUIC_DBG (3, "Allocated quic_ctx %u on thread %u",
386	    ctx - qm->ctx_pool[thread_index], thread_index);
387  return ctx - qm->ctx_pool[thread_index];
388}
389
390static void
391quic_ctx_free (quic_ctx_t * ctx)
392{
393  QUIC_DBG (2, "Free ctx %u %x", ctx->c_thread_index, ctx->c_c_index);
394  u32 thread_index = ctx->c_thread_index;
395  QUIC_ASSERT (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID);
396  if (CLIB_DEBUG)
397    clib_memset (ctx, 0xfb, sizeof (*ctx));
398  pool_put (quic_main.ctx_pool[thread_index], ctx);
399}
400
401static quic_ctx_t *
402quic_ctx_get (u32 ctx_index, u32 thread_index)
403{
404  return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
405}
406
407static quic_ctx_t *
408quic_ctx_get_if_valid (u32 ctx_index, u32 thread_index)
409{
410  if (pool_is_free_index (quic_main.ctx_pool[thread_index], ctx_index))
411    return 0;
412  return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index);
413}
414
415quic_ctx_t *
416quic_get_conn_ctx (quicly_conn_t * conn)
417{
418  u64 conn_data;
419  conn_data = (u64) * quicly_get_data (conn);
420  return quic_ctx_get (conn_data & UINT32_MAX, conn_data >> 32);
421}
422
423static void
424quic_store_conn_ctx (quicly_conn_t * conn, quic_ctx_t * ctx)
425{
426  *quicly_get_data (conn) =
427    (void *) (((u64) ctx->c_thread_index) << 32 | (u64) ctx->c_c_index);
428}
429
430static inline int
431quic_ctx_is_stream (quic_ctx_t * ctx)
432{
433  return (ctx->flags & QUIC_F_IS_STREAM);
434}
435
436static inline int
437quic_ctx_is_listener (quic_ctx_t * ctx)
438{
439  return (ctx->flags & QUIC_F_IS_LISTENER);
440}
441
442static inline int
443quic_ctx_is_conn (quic_ctx_t * ctx)
444{
445  return !(quic_ctx_is_listener (ctx) || quic_ctx_is_stream (ctx));
446}
447
448static inline session_t *
449get_stream_session_and_ctx_from_stream (quicly_stream_t * stream,
450					quic_ctx_t ** ctx)
451{
452  quic_stream_data_t *stream_data;
453
454  stream_data = (quic_stream_data_t *) stream->data;
455  *ctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
456  return session_get ((*ctx)->c_s_index, stream_data->thread_index);
457}
458
459static inline void
460quic_make_connection_key (clib_bihash_kv_16_8_t * kv,
461			  const quicly_cid_plaintext_t * id)
462{
463  kv->key[0] = ((u64) id->master_id) << 32 | (u64) id->thread_id;
464  kv->key[1] = id->node_id;
465}
466
467static int
468quic_sendable_packet_count (session_t * udp_session)
469{
470  u32 max_enqueue;
471  u32 packet_size = QUIC_MAX_PACKET_SIZE + SESSION_CONN_HDR_LEN;
472  max_enqueue = svm_fifo_max_enqueue (udp_session->tx_fifo);
473  return clib_min (max_enqueue / packet_size, QUIC_SEND_PACKET_VEC_SIZE);
474}
475
476static quicly_context_t *
477quic_get_quicly_ctx_from_ctx (quic_ctx_t * ctx)
478{
479  crypto_context_t *crctx =
480    quic_crypto_context_get (ctx->crypto_context_index, ctx->c_thread_index);
481  quic_crypto_context_data_t *data =
482    (quic_crypto_context_data_t *) crctx->data;
483  return &data->quicly_ctx;
484}
485
486static quicly_context_t *
487quic_get_quicly_ctx_from_udp (u64 udp_session_handle)
488{
489  session_t *udp_session = session_get_from_handle (udp_session_handle);
490  quic_ctx_t *ctx =
491    quic_ctx_get (udp_session->opaque, udp_session->thread_index);
492  return quic_get_quicly_ctx_from_ctx (ctx);
493}
494
495static inline void
496quic_set_udp_tx_evt (session_t * udp_session)
497{
498  int rv = 0;
499  if (svm_fifo_set_event (udp_session->tx_fifo))
500    rv = session_send_io_evt_to_thread (udp_session->tx_fifo,
501					SESSION_IO_EVT_TX);
502  if (PREDICT_FALSE (rv))
503    clib_warning ("Event enqueue errored %d", rv);
504}
505
506static inline void
507quic_stop_ctx_timer (quic_ctx_t * ctx)
508{
509  tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
510  if (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID)
511    return;
512  tw = &quic_main.wrk_ctx[ctx->c_thread_index].timer_wheel;
513  tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle);
514  ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
515  QUIC_DBG (4, "Stopping timer for ctx %u", ctx->c_c_index);
516}
517
518/* QUIC protocol actions */
519
520static void
521quic_ack_rx_data (session_t * stream_session)
522{
523  u32 max_deq;
524  quic_ctx_t *sctx;
525  svm_fifo_t *f;
526  quicly_stream_t *stream;
527  quic_stream_data_t *stream_data;
528
529  sctx = quic_ctx_get (stream_session->connection_index,
530		       stream_session->thread_index);
531  QUIC_ASSERT (quic_ctx_is_stream (sctx));
532  stream = sctx->stream;
533  stream_data = (quic_stream_data_t *) stream->data;
534
535  f = stream_session->rx_fifo;
536  max_deq = svm_fifo_max_dequeue (f);
537
538  QUIC_ASSERT (stream_data->app_rx_data_len >= max_deq);
539  quicly_stream_sync_recvbuf (stream, stream_data->app_rx_data_len - max_deq);
540  QUIC_DBG (3, "Acking %u bytes", stream_data->app_rx_data_len - max_deq);
541  stream_data->app_rx_data_len = max_deq;
542}
543
544static void
545quic_disconnect_transport (quic_ctx_t * ctx)
546{
547  QUIC_DBG (2, "Disconnecting transport 0x%lx", ctx->udp_session_handle);
548  vnet_disconnect_args_t a = {
549    .handle = ctx->udp_session_handle,
550    .app_index = quic_main.app_index,
551  };
552
553  if (vnet_disconnect_session (&a))
554    clib_warning ("UDP session 0x%lx disconnect errored",
555		  ctx->udp_session_handle);
556}
557
558static void
559quic_connection_delete (quic_ctx_t * ctx)
560{
561  clib_bihash_kv_16_8_t kv;
562  quicly_conn_t *conn;
563
564  QUIC_DBG (2, "Deleting connection %u", ctx->c_c_index);
565
566  QUIC_ASSERT (!quic_ctx_is_stream (ctx));
567  quic_stop_ctx_timer (ctx);
568
569  /*  Delete the connection from the connection map */
570  conn = ctx->conn;
571  ctx->conn = NULL;
572  quic_make_connection_key (&kv, quicly_get_master_id (conn));
573  QUIC_DBG (2, "Deleting conn with id %lu %lu from map", kv.key[0],
574	    kv.key[1]);
575  clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 0 /* is_add */ );
576
577  quic_disconnect_transport (ctx);
578
579  if (ctx->conn)
580    quicly_free (ctx->conn);
581  session_transport_delete_notify (&ctx->connection);
582}
583
584void
585quic_increment_counter (u8 evt, u8 val)
586{
587  vlib_main_t *vm = vlib_get_main ();
588  vlib_node_increment_counter (vm, quic_input_node.index, evt, val);
589}
590
591/**
592 * Called when quicly return an error
593 * This function interacts tightly with quic_proto_on_close
594 */
595static void
596quic_connection_closed (quic_ctx_t * ctx)
597{
598  QUIC_DBG (2, "QUIC connection %u/%u closed", ctx->c_thread_index,
599	    ctx->c_c_index);
600
601  /* TODO if connection is not established, just delete the session? */
602  /* Actually should send connect or accept error */
603
604  switch (ctx->conn_state)
605    {
606    case QUIC_CONN_STATE_READY:
607      /* Error on an opened connection (timeout...)
608         This puts the session in closing state, we should receive a notification
609         when the app has closed its session */
610      session_transport_reset_notify (&ctx->connection);
611      /* This ensures we delete the connection when the app confirms the close */
612      ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED;
613      break;
614    case QUIC_CONN_STATE_PASSIVE_CLOSING:
615      ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED;
616      /* quic_proto_on_close will eventually be called when the app confirms the close
617         , we delete the connection at that point */
618      break;
619    case QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED:
620      /* App already confirmed close, we can delete the connection */
621      quic_connection_delete (ctx);
622      break;
623    case QUIC_CONN_STATE_OPENED:
624    case QUIC_CONN_STATE_HANDSHAKE:
625    case QUIC_CONN_STATE_ACTIVE_CLOSING:
626      quic_connection_delete (ctx);
627      break;
628    default:
629      QUIC_DBG (0, "BUG %d", ctx->conn_state);
630      break;
631    }
632}
633
634static int
635quic_send_datagram (session_t * udp_session, quicly_datagram_t * packet)
636{
637  u32 max_enqueue;
638  session_dgram_hdr_t hdr;
639  u32 len, ret;
640  svm_fifo_t *f;
641  transport_connection_t *tc;
642
643  len = packet->data.len;
644  f = udp_session->tx_fifo;
645  tc = session_get_transport (udp_session);
646  max_enqueue = svm_fifo_max_enqueue (f);
647  if (max_enqueue < SESSION_CONN_HDR_LEN + len)
648    {
649      QUIC_ERR ("Too much data to send, max_enqueue %u, len %u",
650		max_enqueue, len + SESSION_CONN_HDR_LEN);
651      return QUIC_ERROR_FULL_FIFO;
652    }
653
654  /*  Build packet header for fifo */
655  hdr.data_length = len;
656  hdr.data_offset = 0;
657  hdr.is_ip4 = tc->is_ip4;
658  clib_memcpy (&hdr.lcl_ip, &tc->lcl_ip, sizeof (ip46_address_t));
659  hdr.lcl_port = tc->lcl_port;
660
661  /*  Read dest address from quicly-provided sockaddr */
662  if (hdr.is_ip4)
663    {
664      QUIC_ASSERT (packet->dest.sa.sa_family == AF_INET);
665      struct sockaddr_in *sa4 = (struct sockaddr_in *) &packet->dest.sa;
666      hdr.rmt_port = sa4->sin_port;
667      hdr.rmt_ip.ip4.as_u32 = sa4->sin_addr.s_addr;
668    }
669  else
670    {
671      QUIC_ASSERT (packet->dest.sa.sa_family == AF_INET6);
672      struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &packet->dest.sa;
673      hdr.rmt_port = sa6->sin6_port;
674      clib_memcpy (&hdr.rmt_ip.ip6, &sa6->sin6_addr, 16);
675    }
676
677  ret = svm_fifo_enqueue (f, sizeof (hdr), (u8 *) & hdr);
678  if (ret != sizeof (hdr))
679    {
680      QUIC_ERR ("Not enough space to enqueue header");
681      return QUIC_ERROR_FULL_FIFO;
682    }
683  ret = svm_fifo_enqueue (f, len, packet->data.base);
684  if (ret != len)
685    {
686      QUIC_ERR ("Not enough space to enqueue payload");
687      return QUIC_ERROR_FULL_FIFO;
688    }
689
690  quic_increment_counter (QUIC_ERROR_TX_PACKETS, 1);
691
692  return 0;
693}
694
695static int
696quic_send_packets (quic_ctx_t * ctx)
697{
698  quic_main_t *qm = &quic_main;
699  quicly_datagram_t *packets[QUIC_SEND_PACKET_VEC_SIZE];
700  session_t *udp_session;
701  quicly_conn_t *conn;
702  size_t num_packets, i, max_packets;
703  quicly_packet_allocator_t *pa;
704  int err = 0;
705  u32 thread_index = vlib_get_thread_index ();
706
707  /* We have sctx, get qctx */
708  if (quic_ctx_is_stream (ctx))
709    ctx = quic_ctx_get (ctx->quic_connection_ctx_id, ctx->c_thread_index);
710
711  QUIC_ASSERT (!quic_ctx_is_stream (ctx));
712
713  udp_session = session_get_from_handle_if_valid (ctx->udp_session_handle);
714  if (!udp_session)
715    goto quicly_error;
716
717  conn = ctx->conn;
718
719  if (!conn)
720    return 0;
721
722  /* TODO : quicly can assert it can send min_packets up to 2 */
723  if (quic_sendable_packet_count (udp_session) < 2)
724    goto stop_sending;
725
726  pa = quic_get_quicly_ctx_from_ctx (ctx)->packet_allocator;
727  do
728    {
729      max_packets = quic_sendable_packet_count (udp_session);
730      if (max_packets < 2)
731	break;
732      num_packets = max_packets;
733      if ((err = quicly_send (conn, packets, &num_packets)))
734	goto quicly_error;
735
736      quic_crypto_batch_tx_packets (&qm->wrk_ctx
737				    [thread_index].crypto_context_batch);
738
739      for (i = 0; i != num_packets; ++i)
740	{
741	  quic_crypto_finalize_send_packet (packets[i]);
742	  if ((err = quic_send_datagram (udp_session, packets[i])))
743	    goto quicly_error;
744
745	  pa->free_packet (pa, packets[i]);
746	}
747    }
748  while (num_packets > 0 && num_packets == max_packets);
749
750stop_sending:
751  quic_set_udp_tx_evt (udp_session);
752
753  QUIC_DBG (3, "%u[TX] %u[RX]", svm_fifo_max_dequeue (udp_session->tx_fifo),
754	    svm_fifo_max_dequeue (udp_session->rx_fifo));
755  quic_update_timer (ctx);
756  return 0;
757
758quicly_error:
759  if (err && err != QUICLY_ERROR_PACKET_IGNORED
760      && err != QUICLY_ERROR_FREE_CONNECTION)
761    clib_warning ("Quic error '%U'.", quic_format_err, err);
762  quic_connection_closed (ctx);
763  return 1;
764}
765
766/* Quicly callbacks */
767
768static void
769quic_on_stream_destroy (quicly_stream_t * stream, int err)
770{
771  quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
772  quic_ctx_t *sctx = quic_ctx_get (stream_data->ctx_id,
773				   stream_data->thread_index);
774  session_t *stream_session = session_get (sctx->c_s_index,
775					   sctx->c_thread_index);
776  QUIC_DBG (2, "DESTROYED_STREAM: session 0x%lx (%U)",
777	    session_handle (stream_session), quic_format_err, err);
778
779  stream_session->session_state = SESSION_STATE_CLOSED;
780  session_transport_delete_notify (&sctx->connection);
781
782  quic_increment_counter (QUIC_ERROR_CLOSED_STREAM, 1);
783  quic_ctx_free (sctx);
784  clib_mem_free (stream->data);
785}
786
787static void
788quic_on_stop_sending (quicly_stream_t * stream, int err)
789{
790#if QUIC_DEBUG >= 2
791  quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
792  quic_ctx_t *sctx = quic_ctx_get (stream_data->ctx_id,
793				   stream_data->thread_index);
794  session_t *stream_session = session_get (sctx->c_s_index,
795					   sctx->c_thread_index);
796  clib_warning ("(NOT IMPLEMENTD) STOP_SENDING: session 0x%lx (%U)",
797		session_handle (stream_session), quic_format_err, err);
798#endif
799  /* TODO : handle STOP_SENDING */
800}
801
802static void
803quic_on_receive_reset (quicly_stream_t * stream, int err)
804{
805  quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data;
806  quic_ctx_t *sctx = quic_ctx_get (stream_data->ctx_id,
807				   stream_data->thread_index);
808#if QUIC_DEBUG >= 2
809  session_t *stream_session = session_get (sctx->c_s_index,
810					   sctx->c_thread_index);
811  clib_warning ("RESET_STREAM: session 0x%lx (%U)",
812		session_handle (stream_session), quic_format_err, err);
813#endif
814  session_transport_closing_notify (&sctx->connection);
815}
816
817static void
818quic_on_receive (quicly_stream_t * stream, size_t off, const void *src,
819		 size_t len)
820{
821  QUIC_DBG (3, "received data: %lu bytes, offset %lu", len, off);
822  u32 max_enq, rlen, rv;
823  quic_ctx_t *sctx;
824  session_t *stream_session;
825  app_worker_t *app_wrk;
826  svm_fifo_t *f;
827  quic_stream_data_t *stream_data;
828
829  if (!len)
830    return;
831
832  stream_data = (quic_stream_data_t *) stream->data;
833  sctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index);
834  stream_session = session_get (sctx->c_s_index, stream_data->thread_index);
835  f = stream_session->rx_fifo;
836
837  max_enq = svm_fifo_max_enqueue_prod (f);
838  QUIC_DBG (3, "Enqueuing %u at off %u in %u space", len, off, max_enq);
839  /* Handle duplicate packet/chunk from quicly */
840  if (off < stream_data->app_rx_data_len)
841    {
842      QUIC_DBG (3, "Session [idx %u, app_wrk %u, thread %u, rx-fifo 0x%llx]: "
843		"DUPLICATE PACKET (max_enq %u, len %u, "
844		"app_rx_data_len %u, off %u, ToBeNQ %u)",
845		stream_session->session_index,
846		stream_session->app_wrk_index,
847		stream_session->thread_index, f,
848		max_enq, len, stream_data->app_rx_data_len, off,
849		off - stream_data->app_rx_data_len + len);
850      return;
851    }
852  if (PREDICT_FALSE ((off - stream_data->app_rx_data_len + len) > max_enq))
853    {
854      QUIC_ERR ("Session [idx %u, app_wrk %u, thread %u, rx-fifo 0x%llx]: "
855		"RX FIFO IS FULL (max_enq %u, len %u, "
856		"app_rx_data_len %u, off %u, ToBeNQ %u)",
857		stream_session->session_index,
858		stream_session->app_wrk_index,
859		stream_session->thread_index, f,
860		max_enq, len, stream_data->app_rx_data_len, off,
861		off - stream_data->app_rx_data_len + len);
862      return;			/* This shouldn't happen */
863    }
864  if (off == stream_data->app_rx_data_len)
865    {
866      /* Streams live on the same thread so (f, stream_data) should stay consistent */
867      rlen = svm_fifo_enqueue (f, len, (u8 *) src);
868      QUIC_DBG (3, "Session [idx %u, app_wrk %u, ti %u, rx-fifo 0x%llx]: "
869		"Enqueuing %u (rlen %u) at off %u in %u space, ",
870		stream_session->session_index,
871		stream_session->app_wrk_index,
872		stream_session->thread_index, f, len, rlen, off, max_enq);
873      stream_data->app_rx_data_len += rlen;
874      QUIC_ASSERT (rlen >= len);
875      app_wrk = app_worker_get_if_valid (stream_session->app_wrk_index);
876      if (PREDICT_TRUE (app_wrk != 0))
877	{
878	  rv = app_worker_lock_and_send_event (app_wrk, stream_session,
879					       SESSION_IO_EVT_RX);
880	  if (rv)
881	    QUIC_ERR ("Failed to ping app for RX");
882	}
883      quic_ack_rx_data (stream_session);
884    }
885  else
886    {
887      rlen = svm_fifo_enqueue_with_offset (f,
888					   off - stream_data->app_rx_data_len,
889					   len, (u8 *) src);
890      QUIC_ASSERT (rlen == 0);
891    }
892  return;
893}
894
895void
896quic_fifo_egress_shift (quicly_stream_t * stream, size_t delta)
897{
898  quic_stream_data_t *stream_data;
899  session_t *stream_session;
900  quic_ctx_t *ctx;
901  svm_fifo_t *f;
902  u32 rv;
903
904  stream_data = (quic_stream_data_t *) stream->data;
905  stream_session = get_stream_session_and_ctx_from_stream (stream, &ctx);
906  f = stream_session->tx_fifo;
907
908  QUIC_ASSERT (stream_data->app_tx_data_len >= delta);
909  stream_data->app_tx_data_len -= delta;
910  ctx->bytes_written += delta;
911  rv = svm_fifo_dequeue_drop (f, delta);
912  QUIC_ASSERT (rv == delta);
913
914  rv = quicly_stream_sync_sendbuf (stream, 0);
915  QUIC_ASSERT (!rv);
916}
917
918void
919quic_fifo_egress_emit (quicly_stream_t * stream, size_t off, void *dst,
920		       size_t * len, int *wrote_all)
921{
922  quic_stream_data_t *stream_data;
923  quic_ctx_t *ctx;
924  session_t *stream_session;
925  svm_fifo_t *f;
926  u32 deq_max;
927
928  stream_data = (quic_stream_data_t *) stream->data;
929  stream_session = get_stream_session_and_ctx_from_stream (stream, &ctx);
930  f = stream_session->tx_fifo;
931
932  QUIC_DBG (3, "Emitting %u, offset %u", *len, off);
933
934  deq_max = svm_fifo_max_dequeue_cons (f);
935  QUIC_ASSERT (off <= deq_max);
936  if (off + *len < deq_max)
937    {
938      *wrote_all = 0;
939    }
940  else
941    {
942      *wrote_all = 1;
943      *len = deq_max - off;
944    }
945  QUIC_ASSERT (*len > 0);
946
947  if (off + *len > stream_data->app_tx_data_len)
948    stream_data->app_tx_data_len = off + *len;
949
950  svm_fifo_peek (f, off, *len, dst);
951}
952
953static const quicly_stream_callbacks_t quic_stream_callbacks = {
954  .on_destroy = quic_on_stream_destroy,
955  .on_send_shift = quic_fifo_egress_shift,
956  .on_send_emit = quic_fifo_egress_emit,
957  .on_send_stop = quic_on_stop_sending,
958  .on_receive = quic_on_receive,
959  .on_receive_reset = quic_on_receive_reset
960};
961
962static int
963quic_on_stream_open (quicly_stream_open_t * self, quicly_stream_t * stream)
964{
965  /* Return code for this function ends either
966   * - in quicly_receive : if not QUICLY_ERROR_PACKET_IGNORED, will close connection
967   * - in quicly_open_stream, returned directly
968   */
969
970  session_t *stream_session, *quic_session;
971  quic_stream_data_t *stream_data;
972  app_worker_t *app_wrk;
973  quic_ctx_t *qctx, *sctx;
974  u32 sctx_id;
975  int rv;
976
977  QUIC_DBG (2, "on_stream_open called");
978  stream->data = clib_mem_alloc (sizeof (quic_stream_data_t));
979  stream->callbacks = &quic_stream_callbacks;
980  /* Notify accept on parent qsession, but only if this is not a locally
981   * initiated stream */
982  if (quicly_stream_is_self_initiated (stream))
983    return 0;
984
985  sctx_id = quic_ctx_alloc (vlib_get_thread_index ());
986  qctx = quic_get_conn_ctx (stream->conn);
987
988  /* Might need to signal that the connection is ready if the first thing the
989   * server does is open a stream */
990  quic_check_quic_session_connected (qctx);
991  /* ctx might be invalidated */
992  qctx = quic_get_conn_ctx (stream->conn);
993
994  stream_session = session_alloc (qctx->c_thread_index);
995  QUIC_DBG (2, "ACCEPTED stream_session 0x%lx ctx %u",
996	    session_handle (stream_session), sctx_id);
997  sctx = quic_ctx_get (sctx_id, qctx->c_thread_index);
998  sctx->parent_app_wrk_id = qctx->parent_app_wrk_id;
999  sctx->parent_app_id = qctx->parent_app_id;
1000  sctx->quic_connection_ctx_id = qctx->c_c_index;
1001  sctx->c_c_index = sctx_id;
1002  sctx->c_s_index = stream_session->session_index;
1003  sctx->stream = stream;
1004  sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1005  sctx->flags |= QUIC_F_IS_STREAM;
1006  if (quicly_stream_is_unidirectional (stream->stream_id))
1007    stream_session->flags |= SESSION_F_UNIDIRECTIONAL;
1008
1009  stream_data = (quic_stream_data_t *) stream->data;
1010  stream_data->ctx_id = sctx_id;
1011  stream_data->thread_index = sctx->c_thread_index;
1012  stream_data->app_rx_data_len = 0;
1013  stream_data->app_tx_data_len = 0;
1014
1015  sctx->c_s_index = stream_session->session_index;
1016  stream_session->session_state = SESSION_STATE_CREATED;
1017  stream_session->app_wrk_index = sctx->parent_app_wrk_id;
1018  stream_session->connection_index = sctx->c_c_index;
1019  stream_session->session_type =
1020    session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4);
1021  quic_session = session_get (qctx->c_s_index, qctx->c_thread_index);
1022  stream_session->listener_handle = listen_session_get_handle (quic_session);
1023
1024  app_wrk = app_worker_get (stream_session->app_wrk_index);
1025  if ((rv = app_worker_init_connected (app_wrk, stream_session)))
1026    {
1027      QUIC_ERR ("failed to allocate fifos");
1028      quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR);
1029      return 0;			/* Frame is still valid */
1030    }
1031  svm_fifo_add_want_deq_ntf (stream_session->rx_fifo,
1032			     SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL |
1033			     SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY);
1034
1035  if ((rv = app_worker_accept_notify (app_wrk, stream_session)))
1036    {
1037      QUIC_ERR ("failed to notify accept worker app");
1038      quicly_reset_stream (stream, QUIC_APP_ACCEPT_NOTIFY_ERROR);
1039      return 0;			/* Frame is still valid */
1040    }
1041
1042  return 0;
1043}
1044
1045static void
1046quic_on_closed_by_peer (quicly_closed_by_peer_t * self, quicly_conn_t * conn,
1047			int code, uint64_t frame_type,
1048			const char *reason, size_t reason_len)
1049{
1050  quic_ctx_t *ctx = quic_get_conn_ctx (conn);
1051#if QUIC_DEBUG >= 2
1052  session_t *quic_session = session_get (ctx->c_s_index, ctx->c_thread_index);
1053  clib_warning ("Session 0x%lx closed by peer (%U) %.*s ",
1054		session_handle (quic_session), quic_format_err, code,
1055		reason_len, reason);
1056#endif
1057  ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING;
1058  session_transport_closing_notify (&ctx->connection);
1059}
1060
1061/* Timer handling */
1062
1063static int64_t
1064quic_get_thread_time (u8 thread_index)
1065{
1066  return quic_main.wrk_ctx[thread_index].time_now;
1067}
1068
1069static int64_t
1070quic_get_time (quicly_now_t * self)
1071{
1072  u8 thread_index = vlib_get_thread_index ();
1073  return quic_get_thread_time (thread_index);
1074}
1075
1076static u32
1077quic_set_time_now (u32 thread_index)
1078{
1079  vlib_main_t *vlib_main = vlib_get_main ();
1080  f64 time = vlib_time_now (vlib_main);
1081  quic_main.wrk_ctx[thread_index].time_now = (int64_t) (time * 1000.f);
1082  return quic_main.wrk_ctx[thread_index].time_now;
1083}
1084
1085/* Transport proto callback */
1086static void
1087quic_update_time (f64 now, u8 thread_index)
1088{
1089  tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
1090
1091  tw = &quic_main.wrk_ctx[thread_index].timer_wheel;
1092  quic_set_time_now (thread_index);
1093  tw_timer_expire_timers_1t_3w_1024sl_ov (tw, now);
1094}
1095
1096static void
1097quic_timer_expired (u32 conn_index)
1098{
1099  quic_ctx_t *ctx;
1100  QUIC_DBG (4, "Timer expired for conn %u at %ld", conn_index,
1101	    quic_get_time (NULL));
1102  ctx = quic_ctx_get (conn_index, vlib_get_thread_index ());
1103  ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1104  quic_send_packets (ctx);
1105}
1106
1107static void
1108quic_update_timer (quic_ctx_t * ctx)
1109{
1110  tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
1111  int64_t next_timeout, next_interval;
1112  session_t *quic_session;
1113  int rv;
1114
1115  /*  This timeout is in ms which is the unit of our timer */
1116  next_timeout = quicly_get_first_timeout (ctx->conn);
1117  next_interval = next_timeout - quic_get_time (NULL);
1118
1119  if (next_timeout == 0 || next_interval <= 0)
1120    {
1121      if (ctx->c_s_index == QUIC_SESSION_INVALID)
1122	{
1123	  next_interval = 1;
1124	}
1125      else
1126	{
1127	  quic_session = session_get (ctx->c_s_index, ctx->c_thread_index);
1128	  if (svm_fifo_set_event (quic_session->tx_fifo))
1129	    {
1130	      rv = session_send_io_evt_to_thread_custom (quic_session,
1131							 quic_session->thread_index,
1132							 SESSION_IO_EVT_BUILTIN_TX);
1133	      if (PREDICT_FALSE (rv))
1134		QUIC_ERR ("Failed to enqueue builtin_tx %d", rv);
1135	    }
1136	  return;
1137	}
1138    }
1139
1140  tw = &quic_main.wrk_ctx[vlib_get_thread_index ()].timer_wheel;
1141
1142  QUIC_DBG (4, "Timer set to %ld (int %ld) for ctx %u", next_timeout,
1143	    next_interval, ctx->c_c_index);
1144
1145  if (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID)
1146    {
1147      if (next_timeout == INT64_MAX)
1148	{
1149	  QUIC_DBG (4, "timer for ctx %u already stopped", ctx->c_c_index);
1150	  return;
1151	}
1152      ctx->timer_handle = tw_timer_start_1t_3w_1024sl_ov (tw, ctx->c_c_index,
1153							  0, next_interval);
1154    }
1155  else
1156    {
1157      if (next_timeout == INT64_MAX)
1158	{
1159	  quic_stop_ctx_timer (ctx);
1160	}
1161      else
1162	tw_timer_update_1t_3w_1024sl_ov (tw, ctx->timer_handle,
1163					 next_interval);
1164    }
1165  return;
1166}
1167
1168static void
1169quic_expired_timers_dispatch (u32 * expired_timers)
1170{
1171  int i;
1172
1173  for (i = 0; i < vec_len (expired_timers); i++)
1174    {
1175      quic_timer_expired (expired_timers[i]);
1176    }
1177}
1178
1179/* Transport proto functions */
1180static int
1181quic_connect_stream (session_t * quic_session, session_endpoint_cfg_t * sep)
1182{
1183  uint64_t quic_session_handle;
1184  session_t *stream_session;
1185  quic_stream_data_t *stream_data;
1186  quicly_stream_t *stream;
1187  quicly_conn_t *conn;
1188  app_worker_t *app_wrk;
1189  quic_ctx_t *qctx, *sctx;
1190  u32 sctx_index;
1191  u8 is_unidir;
1192  int rv;
1193
1194  /*  Find base session to which the user want to attach a stream */
1195  quic_session_handle = session_handle (quic_session);
1196  QUIC_DBG (2, "Opening new stream (qsession %u)", quic_session_handle);
1197
1198  if (session_type_transport_proto (quic_session->session_type) !=
1199      TRANSPORT_PROTO_QUIC)
1200    {
1201      QUIC_ERR ("received incompatible session");
1202      return -1;
1203    }
1204
1205  app_wrk = app_worker_get_if_valid (quic_session->app_wrk_index);
1206  if (!app_wrk)
1207    {
1208      QUIC_ERR ("Invalid app worker :(");
1209      return -1;
1210    }
1211
1212  sctx_index = quic_ctx_alloc (quic_session->thread_index);	/*  Allocate before we get pointers */
1213  sctx = quic_ctx_get (sctx_index, quic_session->thread_index);
1214  qctx = quic_ctx_get (quic_session->connection_index,
1215		       quic_session->thread_index);
1216  if (quic_ctx_is_stream (qctx))
1217    {
1218      QUIC_ERR ("session is a stream");
1219      quic_ctx_free (sctx);
1220      return -1;
1221    }
1222
1223  sctx->parent_app_wrk_id = qctx->parent_app_wrk_id;
1224  sctx->parent_app_id = qctx->parent_app_id;
1225  sctx->quic_connection_ctx_id = qctx->c_c_index;
1226  sctx->c_c_index = sctx_index;
1227  sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1228  sctx->flags |= QUIC_F_IS_STREAM;
1229
1230  conn = qctx->conn;
1231
1232  if (!conn || !quicly_connection_is_ready (conn))
1233    return -1;
1234
1235  is_unidir = sep->transport_flags & TRANSPORT_CFG_F_UNIDIRECTIONAL;
1236  if ((rv = quicly_open_stream (conn, &stream, is_unidir)))
1237    {
1238      QUIC_DBG (2, "Stream open failed with %d", rv);
1239      return -1;
1240    }
1241  quic_increment_counter (QUIC_ERROR_OPENED_STREAM, 1);
1242
1243  sctx->stream = stream;
1244
1245  QUIC_DBG (2, "Opened stream %d, creating session", stream->stream_id);
1246
1247  stream_session = session_alloc (qctx->c_thread_index);
1248  QUIC_DBG (2, "Allocated stream_session 0x%lx ctx %u",
1249	    session_handle (stream_session), sctx_index);
1250  stream_session->app_wrk_index = app_wrk->wrk_index;
1251  stream_session->connection_index = sctx_index;
1252  stream_session->listener_handle = quic_session_handle;
1253  stream_session->session_type =
1254    session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4);
1255  if (is_unidir)
1256    stream_session->flags |= SESSION_F_UNIDIRECTIONAL;
1257
1258  sctx->c_s_index = stream_session->session_index;
1259  stream_data = (quic_stream_data_t *) stream->data;
1260  stream_data->ctx_id = sctx->c_c_index;
1261  stream_data->thread_index = sctx->c_thread_index;
1262  stream_data->app_rx_data_len = 0;
1263  stream_data->app_tx_data_len = 0;
1264  stream_session->session_state = SESSION_STATE_READY;
1265
1266  /* For now we only reset streams. Cleanup will be triggered by timers */
1267  if ((rv = app_worker_init_connected (app_wrk, stream_session)))
1268    {
1269      QUIC_ERR ("failed to app_worker_init_connected");
1270      quicly_reset_stream (stream, QUIC_APP_CONNECT_NOTIFY_ERROR);
1271      return app_worker_connect_notify (app_wrk, NULL, rv, sep->opaque);
1272    }
1273
1274  svm_fifo_add_want_deq_ntf (stream_session->rx_fifo,
1275			     SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL |
1276			     SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY);
1277
1278  if (app_worker_connect_notify (app_wrk, stream_session, SESSION_E_NONE,
1279				 sep->opaque))
1280    {
1281      QUIC_ERR ("failed to notify app");
1282      quic_increment_counter (QUIC_ERROR_CLOSED_STREAM, 1);
1283      quicly_reset_stream (stream, QUIC_APP_CONNECT_NOTIFY_ERROR);
1284      return -1;
1285    }
1286
1287  return 0;
1288}
1289
1290static int
1291quic_connect_connection (session_endpoint_cfg_t * sep)
1292{
1293  vnet_connect_args_t _cargs, *cargs = &_cargs;
1294  quic_main_t *qm = &quic_main;
1295  quic_ctx_t *ctx;
1296  app_worker_t *app_wrk;
1297  application_t *app;
1298  u32 ctx_index;
1299  u32 thread_index = vlib_get_thread_index ();
1300  int error;
1301
1302  clib_memset (cargs, 0, sizeof (*cargs));
1303  ctx_index = quic_ctx_alloc (thread_index);
1304  ctx = quic_ctx_get (ctx_index, thread_index);
1305  ctx->parent_app_wrk_id = sep->app_wrk_index;
1306  ctx->c_s_index = QUIC_SESSION_INVALID;
1307  ctx->c_c_index = ctx_index;
1308  ctx->udp_is_ip4 = sep->is_ip4;
1309  ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1310  ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE;
1311  ctx->client_opaque = sep->opaque;
1312  ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1313  if (sep->hostname)
1314    ctx->srv_hostname = format (0, "%v", sep->hostname);
1315  else
1316    /*  needed by quic for crypto + determining client / server */
1317    ctx->srv_hostname = format (0, "%U", format_ip46_address,
1318				&sep->ip, sep->is_ip4);
1319  vec_terminate_c_string (ctx->srv_hostname);
1320
1321  clib_memcpy (&cargs->sep, sep, sizeof (session_endpoint_cfg_t));
1322  cargs->sep.transport_proto = TRANSPORT_PROTO_UDP;
1323  cargs->app_index = qm->app_index;
1324  cargs->api_context = ctx_index;
1325
1326  app_wrk = app_worker_get (sep->app_wrk_index);
1327  app = application_get (app_wrk->app_index);
1328  ctx->parent_app_id = app_wrk->app_index;
1329  cargs->sep_ext.ns_index = app->ns_index;
1330  cargs->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
1331
1332  ctx->crypto_engine = sep->crypto_engine;
1333  ctx->ckpair_index = sep->ckpair_index;
1334  if ((error = quic_acquire_crypto_context (ctx)))
1335    return error;
1336
1337  if ((error = vnet_connect (cargs)))
1338    return error;
1339
1340  return 0;
1341}
1342
1343static int
1344quic_connect (transport_endpoint_cfg_t * tep)
1345{
1346  QUIC_DBG (2, "Called quic_connect");
1347  session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) tep;
1348  session_t *quic_session;
1349  sep = (session_endpoint_cfg_t *) tep;
1350
1351  quic_session = session_get_from_handle_if_valid (sep->parent_handle);
1352  if (quic_session)
1353    return quic_connect_stream (quic_session, sep);
1354  else
1355    return quic_connect_connection (sep);
1356}
1357
1358static void
1359quic_proto_on_close (u32 ctx_index, u32 thread_index)
1360{
1361  int err;
1362  quic_ctx_t *ctx = quic_ctx_get_if_valid (ctx_index, thread_index);
1363  if (!ctx)
1364    return;
1365  session_t *stream_session = session_get (ctx->c_s_index,
1366					   ctx->c_thread_index);
1367#if QUIC_DEBUG >= 2
1368  clib_warning ("Closing session 0x%lx", session_handle (stream_session));
1369#endif
1370  if (quic_ctx_is_stream (ctx))
1371    {
1372      quicly_stream_t *stream = ctx->stream;
1373      if (!quicly_stream_has_send_side (quicly_is_client (stream->conn),
1374					stream->stream_id))
1375	return;
1376      quicly_sendstate_shutdown (&stream->sendstate, ctx->bytes_written +
1377				 svm_fifo_max_dequeue
1378				 (stream_session->tx_fifo));
1379      err = quicly_stream_sync_sendbuf (stream, 1);
1380      if (err)
1381	{
1382	  QUIC_DBG (1, "sendstate_shutdown failed for stream session %lu",
1383		    session_handle (stream_session));
1384	  quicly_reset_stream (stream, QUIC_APP_ERROR_CLOSE_NOTIFY);
1385	}
1386      quic_send_packets (ctx);
1387      return;
1388    }
1389
1390  switch (ctx->conn_state)
1391    {
1392    case QUIC_CONN_STATE_OPENED:
1393    case QUIC_CONN_STATE_HANDSHAKE:
1394    case QUIC_CONN_STATE_READY:
1395      ctx->conn_state = QUIC_CONN_STATE_ACTIVE_CLOSING;
1396      quicly_conn_t *conn = ctx->conn;
1397      /* Start connection closing. Keep sending packets until quicly_send
1398         returns QUICLY_ERROR_FREE_CONNECTION */
1399
1400      quic_increment_counter (QUIC_ERROR_CLOSED_CONNECTION, 1);
1401      quicly_close (conn, QUIC_APP_ERROR_CLOSE_NOTIFY, "Closed by peer");
1402      /* This also causes all streams to be closed (and the cb called) */
1403      quic_send_packets (ctx);
1404      break;
1405    case QUIC_CONN_STATE_PASSIVE_CLOSING:
1406      ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED;
1407      /* send_packets will eventually return an error, we delete the conn at
1408         that point */
1409      break;
1410    case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED:
1411      quic_connection_delete (ctx);
1412      break;
1413    case QUIC_CONN_STATE_ACTIVE_CLOSING:
1414      break;
1415    default:
1416      QUIC_ERR ("Trying to close conn in state %d", ctx->conn_state);
1417      break;
1418    }
1419}
1420
1421static u32
1422quic_start_listen (u32 quic_listen_session_index, transport_endpoint_t * tep)
1423{
1424  vnet_listen_args_t _bargs, *args = &_bargs;
1425  quic_main_t *qm = &quic_main;
1426  session_handle_t udp_handle;
1427  session_endpoint_cfg_t *sep;
1428  session_t *udp_listen_session;
1429  app_worker_t *app_wrk;
1430  application_t *app;
1431  quic_ctx_t *lctx;
1432  u32 lctx_index;
1433  app_listener_t *app_listener;
1434  int rv;
1435
1436  sep = (session_endpoint_cfg_t *) tep;
1437  app_wrk = app_worker_get (sep->app_wrk_index);
1438  /* We need to call this because we call app_worker_init_connected in
1439   * quic_accept_stream, which assumes the connect segment manager exists */
1440  app_worker_alloc_connects_segment_manager (app_wrk);
1441  app = application_get (app_wrk->app_index);
1442  QUIC_DBG (2, "Called quic_start_listen for app %d", app_wrk->app_index);
1443
1444  clib_memset (args, 0, sizeof (*args));
1445  args->app_index = qm->app_index;
1446  args->sep_ext = *sep;
1447  args->sep_ext.ns_index = app->ns_index;
1448  args->sep_ext.transport_proto = TRANSPORT_PROTO_UDP;
1449  args->sep_ext.transport_flags = TRANSPORT_CFG_F_CONNECTED;
1450  if ((rv = vnet_listen (args)))
1451    return rv;
1452
1453  lctx_index = quic_ctx_alloc (0);
1454  udp_handle = args->handle;
1455  app_listener = app_listener_get_w_handle (udp_handle);
1456  udp_listen_session = app_listener_get_session (app_listener);
1457  udp_listen_session->opaque = lctx_index;
1458
1459  lctx = quic_ctx_get (lctx_index, 0);
1460  lctx->flags |= QUIC_F_IS_LISTENER;
1461
1462  clib_memcpy (&lctx->c_rmt_ip, &args->sep.peer.ip, sizeof (ip46_address_t));
1463  clib_memcpy (&lctx->c_lcl_ip, &args->sep.ip, sizeof (ip46_address_t));
1464  lctx->c_rmt_port = args->sep.peer.port;
1465  lctx->c_lcl_port = args->sep.port;
1466  lctx->c_is_ip4 = args->sep.is_ip4;
1467  lctx->c_fib_index = args->sep.fib_index;
1468  lctx->c_proto = TRANSPORT_PROTO_QUIC;
1469  lctx->parent_app_wrk_id = sep->app_wrk_index;
1470  lctx->parent_app_id = app_wrk->app_index;
1471  lctx->udp_session_handle = udp_handle;
1472  lctx->c_s_index = quic_listen_session_index;
1473  lctx->crypto_engine = sep->crypto_engine;
1474  lctx->ckpair_index = sep->ckpair_index;
1475  if (quic_acquire_crypto_context (lctx))
1476    return -1;
1477
1478  QUIC_DBG (2, "Listening UDP session 0x%lx",
1479	    session_handle (udp_listen_session));
1480  QUIC_DBG (2, "Listening QUIC session 0x%lx", quic_listen_session_index);
1481  return lctx_index;
1482}
1483
1484static u32
1485quic_stop_listen (u32 lctx_index)
1486{
1487  QUIC_DBG (2, "Called quic_stop_listen");
1488  quic_ctx_t *lctx;
1489  lctx = quic_ctx_get (lctx_index, 0);
1490  QUIC_ASSERT (quic_ctx_is_listener (lctx));
1491  vnet_unlisten_args_t a = {
1492    .handle = lctx->udp_session_handle,
1493    .app_index = quic_main.app_index,
1494    .wrk_map_index = 0		/* default wrk */
1495  };
1496  if (vnet_unlisten (&a))
1497    clib_warning ("unlisten errored");
1498
1499  quic_release_crypto_context (lctx->crypto_context_index,
1500			       0 /* thread_index */ );
1501  quic_ctx_free (lctx);
1502  return 0;
1503}
1504
1505static transport_connection_t *
1506quic_connection_get (u32 ctx_index, u32 thread_index)
1507{
1508  quic_ctx_t *ctx;
1509  ctx = quic_ctx_get (ctx_index, thread_index);
1510  return &ctx->connection;
1511}
1512
1513static transport_connection_t *
1514quic_listener_get (u32 listener_index)
1515{
1516  QUIC_DBG (2, "Called quic_listener_get");
1517  quic_ctx_t *ctx;
1518  ctx = quic_ctx_get (listener_index, 0);
1519  return &ctx->connection;
1520}
1521
1522static u8 *
1523format_quic_ctx (u8 * s, va_list * args)
1524{
1525  quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
1526  u32 verbose = va_arg (*args, u32);
1527  u8 *str = 0;
1528
1529  if (!ctx)
1530    return s;
1531  str = format (str, "[#%d][Q] ", ctx->c_thread_index);
1532
1533  if (quic_ctx_is_listener (ctx))
1534    str = format (str, "Listener, UDP %ld", ctx->udp_session_handle);
1535  else if (quic_ctx_is_stream (ctx))
1536    str = format (str, "Stream %ld conn %d",
1537		  ctx->stream->stream_id, ctx->quic_connection_ctx_id);
1538  else				/* connection */
1539    str = format (str, "Conn %d UDP %d", ctx->c_c_index,
1540		  ctx->udp_session_handle);
1541
1542  str = format (str, " app %d wrk %d", ctx->parent_app_id,
1543		ctx->parent_app_wrk_id);
1544
1545  if (verbose == 1)
1546    s = format (s, "%-50s%-15d", str, ctx->conn_state);
1547  else
1548    s = format (s, "%s\n", str);
1549  vec_free (str);
1550  return s;
1551}
1552
1553static u8 *
1554format_quic_connection (u8 * s, va_list * args)
1555{
1556  u32 qc_index = va_arg (*args, u32);
1557  u32 thread_index = va_arg (*args, u32);
1558  u32 verbose = va_arg (*args, u32);
1559  quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index);
1560  s = format (s, "%U", format_quic_ctx, ctx, verbose);
1561  return s;
1562}
1563
1564static u8 *
1565format_quic_half_open (u8 * s, va_list * args)
1566{
1567  u32 qc_index = va_arg (*args, u32);
1568  u32 thread_index = va_arg (*args, u32);
1569  quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index);
1570  s = format (s, "[#%d][Q] half-open app %u", thread_index,
1571	      ctx->parent_app_id);
1572  return s;
1573}
1574
1575/*  TODO improve */
1576static u8 *
1577format_quic_listener (u8 * s, va_list * args)
1578{
1579  u32 tci = va_arg (*args, u32);
1580  u32 thread_index = va_arg (*args, u32);
1581  u32 verbose = va_arg (*args, u32);
1582  quic_ctx_t *ctx = quic_ctx_get (tci, thread_index);
1583  s = format (s, "%U", format_quic_ctx, ctx, verbose);
1584  return s;
1585}
1586
1587/* Session layer callbacks */
1588
1589static inline void
1590quic_build_sockaddr (struct sockaddr *sa, socklen_t * salen,
1591		     ip46_address_t * addr, u16 port, u8 is_ip4)
1592{
1593  if (is_ip4)
1594    {
1595      struct sockaddr_in *sa4 = (struct sockaddr_in *) sa;
1596      sa4->sin_family = AF_INET;
1597      sa4->sin_port = port;
1598      sa4->sin_addr.s_addr = addr->ip4.as_u32;
1599      *salen = sizeof (struct sockaddr_in);
1600    }
1601  else
1602    {
1603      struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa;
1604      sa6->sin6_family = AF_INET6;
1605      sa6->sin6_port = port;
1606      clib_memcpy (&sa6->sin6_addr, &addr->ip6, 16);
1607      *salen = sizeof (struct sockaddr_in6);
1608    }
1609}
1610
1611static void
1612quic_on_quic_session_connected (quic_ctx_t * ctx)
1613{
1614  session_t *quic_session;
1615  app_worker_t *app_wrk;
1616  u32 ctx_id = ctx->c_c_index;
1617  u32 thread_index = ctx->c_thread_index;
1618  int rv;
1619
1620  quic_session = session_alloc (thread_index);
1621
1622  QUIC_DBG (2, "Allocated quic session 0x%lx", session_handle (quic_session));
1623  ctx->c_s_index = quic_session->session_index;
1624  quic_session->app_wrk_index = ctx->parent_app_wrk_id;
1625  quic_session->connection_index = ctx->c_c_index;
1626  quic_session->listener_handle = SESSION_INVALID_HANDLE;
1627  quic_session->session_type =
1628    session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4);
1629
1630  /* If quic session connected fails, immediatly close connection */
1631  app_wrk = app_worker_get (ctx->parent_app_wrk_id);
1632  if ((rv = app_worker_init_connected (app_wrk, quic_session)))
1633    {
1634      QUIC_ERR ("failed to app_worker_init_connected");
1635      quic_proto_on_close (ctx_id, thread_index);
1636      app_worker_connect_notify (app_wrk, NULL, rv, ctx->client_opaque);
1637      return;
1638    }
1639
1640  quic_session->session_state = SESSION_STATE_CONNECTING;
1641  if ((rv = app_worker_connect_notify (app_wrk, quic_session,
1642				       SESSION_E_NONE, ctx->client_opaque)))
1643    {
1644      QUIC_ERR ("failed to notify app %d", rv);
1645      quic_proto_on_close (ctx_id, thread_index);
1646      return;
1647    }
1648
1649  /*  If the app opens a stream in its callback it may invalidate ctx */
1650  ctx = quic_ctx_get (ctx_id, thread_index);
1651  /*
1652   * app_worker_connect_notify() might have reallocated pool, reload
1653   * quic_session pointer
1654   */
1655  quic_session = session_get (ctx->c_s_index, thread_index);
1656  quic_session->session_state = SESSION_STATE_LISTENING;
1657}
1658
1659static void
1660quic_check_quic_session_connected (quic_ctx_t * ctx)
1661{
1662  /* Called when we need to trigger quic session connected
1663   * we may call this function on the server side / at
1664   * stream opening */
1665
1666  /* Conn may be set to null if the connection is terminated */
1667  if (!ctx->conn || ctx->conn_state != QUIC_CONN_STATE_HANDSHAKE)
1668    return;
1669  if (!quicly_connection_is_ready (ctx->conn))
1670    return;
1671  ctx->conn_state = QUIC_CONN_STATE_READY;
1672  if (!quicly_is_client (ctx->conn))
1673    return;
1674  quic_on_quic_session_connected (ctx);
1675}
1676
1677static inline void
1678quic_update_conn_ctx (quicly_conn_t * conn, quicly_context_t * quicly_context)
1679{
1680  /* we need to update the quicly_conn on migrate
1681   * as it contains a pointer to the crypto context */
1682  ptls_context_t **tls;
1683  quicly_context_t **_quicly_context;
1684  _quicly_context = (quicly_context_t **) conn;
1685  *_quicly_context = quicly_context;
1686  tls = (ptls_context_t **) quicly_get_tls (conn);
1687  *tls = quicly_context->tls;
1688}
1689
1690static void
1691quic_receive_connection (void *arg)
1692{
1693  u32 new_ctx_id, thread_index = vlib_get_thread_index ();
1694  quic_ctx_t *temp_ctx, *new_ctx;
1695  clib_bihash_kv_16_8_t kv;
1696  quicly_conn_t *conn;
1697  quicly_context_t *quicly_context;
1698  session_t *udp_session;
1699
1700  temp_ctx = arg;
1701  new_ctx_id = quic_ctx_alloc (thread_index);
1702  new_ctx = quic_ctx_get (new_ctx_id, thread_index);
1703
1704  QUIC_DBG (2, "Received conn %u (now %u)", temp_ctx->c_thread_index,
1705	    new_ctx_id);
1706
1707  clib_memcpy (new_ctx, temp_ctx, sizeof (quic_ctx_t));
1708  clib_mem_free (temp_ctx);
1709
1710  new_ctx->c_thread_index = thread_index;
1711  new_ctx->c_c_index = new_ctx_id;
1712  quic_acquire_crypto_context (new_ctx);
1713
1714  conn = new_ctx->conn;
1715  quicly_context = quic_get_quicly_ctx_from_ctx (new_ctx);
1716  quic_update_conn_ctx (conn, quicly_context);
1717
1718  quic_store_conn_ctx (conn, new_ctx);
1719  quic_make_connection_key (&kv, quicly_get_master_id (conn));
1720  kv.value = ((u64) thread_index) << 32 | (u64) new_ctx_id;
1721  QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1722  clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1723  new_ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1724  quic_update_timer (new_ctx);
1725
1726  /*  Trigger write on this connection if necessary */
1727  udp_session = session_get_from_handle (new_ctx->udp_session_handle);
1728  udp_session->opaque = new_ctx_id;
1729  udp_session->flags &= ~SESSION_F_IS_MIGRATING;
1730  if (svm_fifo_max_dequeue (udp_session->tx_fifo))
1731    quic_set_udp_tx_evt (udp_session);
1732}
1733
1734static void
1735quic_transfer_connection (u32 ctx_index, u32 dest_thread)
1736{
1737  quic_ctx_t *ctx, *temp_ctx;
1738  u32 thread_index = vlib_get_thread_index ();
1739
1740  QUIC_DBG (2, "Transferring conn %u to thread %u", ctx_index, dest_thread);
1741
1742  temp_ctx = clib_mem_alloc (sizeof (quic_ctx_t));
1743  QUIC_ASSERT (temp_ctx != NULL);
1744  ctx = quic_ctx_get (ctx_index, thread_index);
1745
1746  clib_memcpy (temp_ctx, ctx, sizeof (quic_ctx_t));
1747
1748  quic_stop_ctx_timer (ctx);
1749  quic_release_crypto_context (ctx->crypto_context_index, thread_index);
1750  quic_ctx_free (ctx);
1751
1752  /*  Send connection to destination thread */
1753  session_send_rpc_evt_to_thread (dest_thread, quic_receive_connection,
1754				  (void *) temp_ctx);
1755}
1756
1757static int
1758quic_udp_session_connected_callback (u32 quic_app_index, u32 ctx_index,
1759				     session_t * udp_session,
1760				     session_error_t err)
1761{
1762  QUIC_DBG (2, "QSession is now connected (id %u)",
1763	    udp_session->session_index);
1764  /* This should always be called before quic_connect returns since UDP always
1765   * connects instantly. */
1766  clib_bihash_kv_16_8_t kv;
1767  struct sockaddr_in6 sa6;
1768  struct sockaddr *sa = (struct sockaddr *) &sa6;
1769  socklen_t salen;
1770  transport_connection_t *tc;
1771  app_worker_t *app_wrk;
1772  quicly_conn_t *conn;
1773  quic_ctx_t *ctx;
1774  u32 thread_index = vlib_get_thread_index ();
1775  int ret;
1776  quicly_context_t *quicly_ctx;
1777
1778
1779  ctx = quic_ctx_get (ctx_index, thread_index);
1780  if (err)
1781    {
1782      u32 api_context;
1783      app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id);
1784      if (app_wrk)
1785	{
1786	  api_context = ctx->c_s_index;
1787	  app_worker_connect_notify (app_wrk, 0, SESSION_E_NONE, api_context);
1788	}
1789      return 0;
1790    }
1791
1792  ctx->c_thread_index = thread_index;
1793  ctx->c_c_index = ctx_index;
1794
1795  QUIC_DBG (2, "Quic connect returned %u. New ctx [%u]%x",
1796	    is_fail, thread_index, (ctx) ? ctx_index : ~0);
1797
1798  ctx->udp_session_handle = session_handle (udp_session);
1799  udp_session->opaque = ctx_index;
1800
1801  /* Init QUIC lib connection
1802   * Generate required sockaddr & salen */
1803  tc = session_get_transport (udp_session);
1804  quic_build_sockaddr (sa, &salen, &tc->rmt_ip, tc->rmt_port, tc->is_ip4);
1805
1806  quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx);
1807  ret = quicly_connect (&ctx->conn, quicly_ctx, (char *) ctx->srv_hostname,
1808			sa, NULL, &quic_main.wrk_ctx[thread_index].next_cid,
1809			ptls_iovec_init (NULL, 0), &quic_main.hs_properties,
1810			NULL);
1811  ++quic_main.wrk_ctx[thread_index].next_cid.master_id;
1812  /*  Save context handle in quicly connection */
1813  quic_store_conn_ctx (ctx->conn, ctx);
1814  assert (ret == 0);
1815
1816  /*  Register connection in connections map */
1817  conn = ctx->conn;
1818  quic_make_connection_key (&kv, quicly_get_master_id (conn));
1819  kv.value = ((u64) thread_index) << 32 | (u64) ctx_index;
1820  QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
1821  clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
1822
1823  /*  UDP stack quirk? preemptively transfer connection if that happens */
1824  if (udp_session->thread_index != thread_index)
1825    quic_transfer_connection (ctx_index, udp_session->thread_index);
1826  else
1827    quic_send_packets (ctx);
1828
1829  return ret;
1830}
1831
1832static void
1833quic_udp_session_disconnect_callback (session_t * s)
1834{
1835  clib_warning ("UDP session disconnected???");
1836}
1837
1838static void
1839quic_udp_session_cleanup_callback (session_t * udp_session,
1840				   session_cleanup_ntf_t ntf)
1841{
1842  quic_ctx_t *ctx;
1843
1844  if (ntf != SESSION_CLEANUP_SESSION)
1845    return;
1846
1847  ctx = quic_ctx_get (udp_session->opaque, udp_session->thread_index);
1848  quic_stop_ctx_timer (ctx);
1849  quic_release_crypto_context (ctx->crypto_context_index,
1850			       ctx->c_thread_index);
1851  quic_ctx_free (ctx);
1852}
1853
1854static void
1855quic_udp_session_reset_callback (session_t * s)
1856{
1857  clib_warning ("UDP session reset???");
1858}
1859
1860static void
1861quic_udp_session_migrate_callback (session_t * s, session_handle_t new_sh)
1862{
1863  u32 new_thread = session_thread_from_handle (new_sh);
1864  quic_ctx_t *ctx;
1865
1866  QUIC_DBG (2, "Session %x migrated to %lx", s->session_index, new_sh);
1867  QUIC_ASSERT (vlib_get_thread_index () == s->thread_index);
1868  ctx = quic_ctx_get (s->opaque, s->thread_index);
1869  QUIC_ASSERT (ctx->udp_session_handle == session_handle (s));
1870
1871  ctx->udp_session_handle = new_sh;
1872#if QUIC_DEBUG >= 1
1873  s->opaque = 0xfeedface;
1874#endif
1875  quic_transfer_connection (ctx->c_c_index, new_thread);
1876}
1877
1878int
1879quic_udp_session_accepted_callback (session_t * udp_session)
1880{
1881  /* New UDP connection, try to accept it */
1882  u32 ctx_index;
1883  quic_ctx_t *ctx, *lctx;
1884  session_t *udp_listen_session;
1885  u32 thread_index = vlib_get_thread_index ();
1886
1887  udp_listen_session =
1888    listen_session_get_from_handle (udp_session->listener_handle);
1889
1890  ctx_index = quic_ctx_alloc (thread_index);
1891  ctx = quic_ctx_get (ctx_index, thread_index);
1892  ctx->c_thread_index = udp_session->thread_index;
1893  ctx->c_c_index = ctx_index;
1894  ctx->c_s_index = QUIC_SESSION_INVALID;
1895  ctx->udp_session_handle = session_handle (udp_session);
1896  QUIC_DBG (2, "ACCEPTED UDP 0x%lx", ctx->udp_session_handle);
1897  ctx->listener_ctx_id = udp_listen_session->opaque;
1898  lctx = quic_ctx_get (udp_listen_session->opaque,
1899		       udp_listen_session->thread_index);
1900  ctx->udp_is_ip4 = lctx->c_is_ip4;
1901  ctx->parent_app_id = lctx->parent_app_id;
1902  ctx->parent_app_wrk_id = lctx->parent_app_wrk_id;
1903  ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID;
1904  ctx->conn_state = QUIC_CONN_STATE_OPENED;
1905  ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP;
1906
1907  ctx->crypto_engine = lctx->crypto_engine;
1908  ctx->ckpair_index = lctx->ckpair_index;
1909  quic_acquire_crypto_context (ctx);
1910  udp_session->opaque = ctx_index;
1911
1912  /* TODO timeout to delete these if they never connect */
1913  return 0;
1914}
1915
1916static int
1917quic_add_segment_callback (u32 client_index, u64 seg_handle)
1918{
1919  /* No-op for builtin */
1920  return 0;
1921}
1922
1923static int
1924quic_del_segment_callback (u32 client_index, u64 seg_handle)
1925{
1926  /* No-op for builtin */
1927  return 0;
1928}
1929
1930static int
1931quic_custom_app_rx_callback (transport_connection_t * tc)
1932{
1933  quic_ctx_t *ctx;
1934  session_t *stream_session = session_get (tc->s_index, tc->thread_index);
1935  QUIC_DBG (3, "Received app READ notification");
1936  quic_ack_rx_data (stream_session);
1937  svm_fifo_reset_has_deq_ntf (stream_session->rx_fifo);
1938
1939  /* Need to send packets (acks may never be sent otherwise) */
1940  ctx = quic_ctx_get (stream_session->connection_index,
1941		      stream_session->thread_index);
1942  quic_send_packets (ctx);
1943  return 0;
1944}
1945
1946static int
1947quic_custom_tx_callback (void *s, transport_send_params_t * sp)
1948{
1949  session_t *stream_session = (session_t *) s;
1950  quic_stream_data_t *stream_data;
1951  quicly_stream_t *stream;
1952  quic_ctx_t *ctx;
1953  u32 max_deq;
1954  int rv;
1955
1956  if (PREDICT_FALSE
1957      (stream_session->session_state >= SESSION_STATE_TRANSPORT_CLOSING))
1958    return 0;
1959  ctx = quic_ctx_get (stream_session->connection_index,
1960		      stream_session->thread_index);
1961  if (PREDICT_FALSE (!quic_ctx_is_stream (ctx)))
1962    {
1963      goto tx_end;		/* Most probably a reschedule */
1964    }
1965
1966  QUIC_DBG (3, "Stream TX event");
1967  quic_ack_rx_data (stream_session);
1968  stream = ctx->stream;
1969  if (!quicly_sendstate_is_open (&stream->sendstate))
1970    {
1971      QUIC_ERR ("Warning: tried to send on closed stream");
1972      return -1;
1973    }
1974
1975  stream_data = (quic_stream_data_t *) stream->data;
1976  max_deq = svm_fifo_max_dequeue (stream_session->tx_fifo);
1977  QUIC_ASSERT (max_deq >= stream_data->app_tx_data_len);
1978  if (max_deq == stream_data->app_tx_data_len)
1979    {
1980      QUIC_DBG (3, "TX but no data %d / %d", max_deq,
1981		stream_data->app_tx_data_len);
1982      return 0;
1983    }
1984  stream_data->app_tx_data_len = max_deq;
1985  rv = quicly_stream_sync_sendbuf (stream, 1);
1986  QUIC_ASSERT (!rv);
1987
1988tx_end:
1989  quic_send_packets (ctx);
1990  return 0;
1991}
1992
1993/*
1994 * Returns 0 if a matching connection is found and is on the right thread.
1995 * Otherwise returns -1.
1996 * If a connection is found, even on the wrong thread, ctx_thread and ctx_index
1997 * will be set.
1998 */
1999static inline int
2000quic_find_packet_ctx (quic_rx_packet_ctx_t * pctx, u32 caller_thread_index)
2001{
2002  clib_bihash_kv_16_8_t kv;
2003  clib_bihash_16_8_t *h;
2004  quic_ctx_t *ctx;
2005  u32 index, thread_id;
2006
2007  h = &quic_main.connection_hash;
2008  quic_make_connection_key (&kv, &pctx->packet.cid.dest.plaintext);
2009  QUIC_DBG (3, "Searching conn with id %lu %lu", kv.key[0], kv.key[1]);
2010
2011  if (clib_bihash_search_16_8 (h, &kv, &kv))
2012    {
2013      QUIC_DBG (3, "connection not found");
2014      return QUIC_PACKET_TYPE_NONE;
2015    }
2016
2017  index = kv.value & UINT32_MAX;
2018  thread_id = kv.value >> 32;
2019  /* Check if this connection belongs to this thread, otherwise
2020   * ask for it to be moved */
2021  if (thread_id != caller_thread_index)
2022    {
2023      QUIC_DBG (2, "Connection is on wrong thread");
2024      /* Cannot make full check with quicly_is_destination... */
2025      pctx->ctx_index = index;
2026      pctx->thread_index = thread_id;
2027      return QUIC_PACKET_TYPE_MIGRATE;
2028    }
2029  ctx = quic_ctx_get (index, vlib_get_thread_index ());
2030  if (!ctx->conn)
2031    {
2032      QUIC_ERR ("ctx has no conn");
2033      return QUIC_PACKET_TYPE_NONE;
2034    }
2035  if (!quicly_is_destination (ctx->conn, NULL, &pctx->sa, &pctx->packet))
2036    return QUIC_PACKET_TYPE_NONE;
2037
2038  QUIC_DBG (3, "Connection found");
2039  pctx->ctx_index = index;
2040  pctx->thread_index = thread_id;
2041  return QUIC_PACKET_TYPE_RECEIVE;
2042}
2043
2044static void
2045quic_accept_connection (quic_rx_packet_ctx_t * pctx)
2046{
2047  quicly_context_t *quicly_ctx;
2048  session_t *quic_session;
2049  clib_bihash_kv_16_8_t kv;
2050  app_worker_t *app_wrk;
2051  quicly_conn_t *conn;
2052  quic_ctx_t *ctx;
2053  quic_ctx_t *lctx;
2054  int rv;
2055
2056  /* new connection, accept and create context if packet is valid
2057   * TODO: check if socket is actually listening? */
2058  ctx = quic_ctx_get (pctx->ctx_index, pctx->thread_index);
2059  if (ctx->c_s_index != QUIC_SESSION_INVALID)
2060    {
2061      QUIC_DBG (2, "already accepted ctx 0x%x", ctx->c_s_index);
2062      return;
2063    }
2064
2065  quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx);
2066  if ((rv = quicly_accept (&conn, quicly_ctx, NULL, &pctx->sa,
2067			   &pctx->packet, NULL,
2068			   &quic_main.wrk_ctx[pctx->thread_index].next_cid,
2069			   NULL)))
2070    {
2071      /* Invalid packet, pass */
2072      assert (conn == NULL);
2073      QUIC_ERR ("Accept failed with %U", quic_format_err, rv);
2074      /* TODO: cleanup created quic ctx and UDP session */
2075      return;
2076    }
2077  assert (conn != NULL);
2078
2079  ++quic_main.wrk_ctx[pctx->thread_index].next_cid.master_id;
2080  /* Save ctx handle in quicly connection */
2081  quic_store_conn_ctx (conn, ctx);
2082  ctx->conn = conn;
2083
2084  quic_session = session_alloc (ctx->c_thread_index);
2085  QUIC_DBG (2, "Allocated quic_session, 0x%lx ctx %u",
2086	    session_handle (quic_session), ctx->c_c_index);
2087  quic_session->session_state = SESSION_STATE_LISTENING;
2088  ctx->c_s_index = quic_session->session_index;
2089
2090  lctx = quic_ctx_get (ctx->listener_ctx_id, 0);
2091
2092  quic_session->app_wrk_index = lctx->parent_app_wrk_id;
2093  quic_session->connection_index = ctx->c_c_index;
2094  quic_session->session_type =
2095    session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4);
2096  quic_session->listener_handle = lctx->c_s_index;
2097
2098  /* Register connection in connections map */
2099  quic_make_connection_key (&kv, quicly_get_master_id (conn));
2100  kv.value = ((u64) pctx->thread_index) << 32 | (u64) pctx->ctx_index;
2101  clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ );
2102  QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]);
2103
2104  /* If notify fails, reset connection immediatly */
2105  if ((rv = app_worker_init_accepted (quic_session)))
2106    {
2107      QUIC_ERR ("failed to allocate fifos");
2108      quic_proto_on_close (pctx->ctx_index, pctx->thread_index);
2109      return;
2110    }
2111
2112  app_wrk = app_worker_get (quic_session->app_wrk_index);
2113  if ((rv = app_worker_accept_notify (app_wrk, quic_session)))
2114    {
2115      QUIC_ERR ("failed to notify accept worker app");
2116      quic_proto_on_close (pctx->ctx_index, pctx->thread_index);
2117      return;
2118    }
2119
2120  ctx->conn_state = QUIC_CONN_STATE_READY;
2121}
2122
2123static int
2124quic_reset_connection (u64 udp_session_handle, quic_rx_packet_ctx_t * pctx)
2125{
2126  /* short header packet; potentially a dead connection. No need to check the
2127   * length of the incoming packet, because loop is prevented by authenticating
2128   * the CID (by checking node_id and thread_id). If the peer is also sending a
2129   * reset, then the next CID is highly likely to contain a non-authenticating
2130   * CID, ... */
2131  QUIC_DBG (2, "Sending stateless reset");
2132  int rv;
2133  quicly_datagram_t *dgram;
2134  session_t *udp_session;
2135  quicly_context_t *quicly_ctx;
2136  if (pctx->packet.cid.dest.plaintext.node_id != 0
2137      || pctx->packet.cid.dest.plaintext.thread_id != 0)
2138    return 0;
2139  quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle);
2140  dgram = quicly_send_stateless_reset (quicly_ctx, &pctx->sa, NULL,
2141				       &pctx->packet.cid.dest.plaintext);
2142  if (dgram == NULL)
2143    return 1;
2144  udp_session = session_get_from_handle (udp_session_handle);
2145  rv = quic_send_datagram (udp_session, dgram);
2146  quic_set_udp_tx_evt (udp_session);
2147  return rv;
2148}
2149
2150static int
2151quic_process_one_rx_packet (u64 udp_session_handle, svm_fifo_t * f,
2152			    u32 fifo_offset, quic_rx_packet_ctx_t * pctx)
2153{
2154  size_t plen;
2155  u32 full_len, ret;
2156  u32 thread_index = vlib_get_thread_index ();
2157  u32 cur_deq = svm_fifo_max_dequeue (f) - fifo_offset;
2158  quicly_context_t *quicly_ctx;
2159  session_t *udp_session;
2160  int rv;
2161
2162  ret = svm_fifo_peek (f, fifo_offset,
2163		       SESSION_CONN_HDR_LEN, (u8 *) & pctx->ph);
2164  QUIC_ASSERT (ret == SESSION_CONN_HDR_LEN);
2165  QUIC_ASSERT (pctx->ph.data_offset == 0);
2166  full_len = pctx->ph.data_length + SESSION_CONN_HDR_LEN;
2167  if (full_len > cur_deq)
2168    {
2169      QUIC_ERR ("Not enough data in fifo RX");
2170      return 1;
2171    }
2172
2173  /* Quicly can read len bytes from the fifo at offset:
2174   * ph.data_offset + SESSION_CONN_HDR_LEN */
2175  ret = svm_fifo_peek (f, SESSION_CONN_HDR_LEN + fifo_offset,
2176		       pctx->ph.data_length, pctx->data);
2177  if (ret != pctx->ph.data_length)
2178    {
2179      QUIC_ERR ("Not enough data peeked in RX");
2180      return 1;
2181    }
2182
2183  quic_increment_counter (QUIC_ERROR_RX_PACKETS, 1);
2184  quic_build_sockaddr (&pctx->sa, &pctx->salen, &pctx->ph.rmt_ip,
2185		       pctx->ph.rmt_port, pctx->ph.is_ip4);
2186  quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle);
2187  plen = quicly_decode_packet (quicly_ctx, &pctx->packet,
2188			       pctx->data, pctx->ph.data_length);
2189
2190  if (plen == SIZE_MAX)
2191    {
2192      return 1;
2193    }
2194
2195  rv = quic_find_packet_ctx (pctx, thread_index);
2196  if (rv == QUIC_PACKET_TYPE_RECEIVE)
2197    {
2198      pctx->ptype = QUIC_PACKET_TYPE_RECEIVE;
2199      if (quic_main.vnet_crypto_enabled)
2200	{
2201	  quic_ctx_t *qctx = quic_ctx_get (pctx->ctx_index, thread_index);
2202	  quic_crypto_decrypt_packet (qctx, pctx);
2203	}
2204      return 0;
2205    }
2206  else if (rv == QUIC_PACKET_TYPE_MIGRATE)
2207    {
2208      pctx->ptype = QUIC_PACKET_TYPE_MIGRATE;
2209      /*  Connection found but on wrong thread, ask move */
2210    }
2211  else if (QUICLY_PACKET_IS_LONG_HEADER (pctx->packet.octets.base[0]))
2212    {
2213      pctx->ptype = QUIC_PACKET_TYPE_ACCEPT;
2214      udp_session = session_get_from_handle (udp_session_handle);
2215      pctx->ctx_index = udp_session->opaque;
2216      pctx->thread_index = thread_index;
2217    }
2218  else
2219    {
2220      pctx->ptype = QUIC_PACKET_TYPE_RESET;
2221    }
2222  return 1;
2223}
2224
2225static int
2226quic_udp_session_rx_callback (session_t * udp_session)
2227{
2228  /*  Read data from UDP rx_fifo and pass it to the quicly conn. */
2229  quic_main_t *qm = &quic_main;
2230  quic_ctx_t *ctx = NULL, *prev_ctx = NULL;
2231  svm_fifo_t *f = udp_session->rx_fifo;
2232  u32 max_deq;
2233  u64 udp_session_handle = session_handle (udp_session);
2234  int rv = 0;
2235  u32 thread_index = vlib_get_thread_index ();
2236  u32 cur_deq, fifo_offset, max_packets, i;
2237
2238  quic_rx_packet_ctx_t packets_ctx[QUIC_RCV_MAX_BATCH_PACKETS];
2239
2240  if (udp_session->flags & SESSION_F_IS_MIGRATING)
2241    {
2242      QUIC_DBG (3, "RX on migrating udp session");
2243      return 0;
2244    }
2245
2246rx_start:
2247  max_deq = svm_fifo_max_dequeue (f);
2248  if (max_deq == 0)
2249    return 0;
2250
2251  fifo_offset = 0;
2252  max_packets = QUIC_RCV_MAX_BATCH_PACKETS;
2253
2254#if CLIB_DEBUG > 0
2255  clib_memset (packets_ctx, 0xfa,
2256	       QUIC_RCV_MAX_BATCH_PACKETS * sizeof (quic_rx_packet_ctx_t));
2257#endif
2258
2259  for (i = 0; i < max_packets; i++)
2260    {
2261      packets_ctx[i].thread_index = UINT32_MAX;
2262      packets_ctx[i].ctx_index = UINT32_MAX;
2263      packets_ctx[i].ptype = QUIC_PACKET_TYPE_DROP;
2264
2265      cur_deq = max_deq - fifo_offset;
2266      if (cur_deq == 0)
2267	{
2268	  max_packets = i + 1;
2269	  break;
2270	}
2271      if (cur_deq < SESSION_CONN_HDR_LEN)
2272	{
2273	  fifo_offset = max_deq;
2274	  max_packets = i + 1;
2275	  QUIC_ERR ("Fifo %d < header size in RX", cur_deq);
2276	  break;
2277	}
2278      rv = quic_process_one_rx_packet (udp_session_handle, f,
2279				       fifo_offset, &packets_ctx[i]);
2280      if (packets_ctx[i].ptype != QUIC_PACKET_TYPE_MIGRATE)
2281	fifo_offset += SESSION_CONN_HDR_LEN + packets_ctx[i].ph.data_length;
2282      if (rv)
2283	{
2284	  max_packets = i + 1;
2285	  break;
2286	}
2287    }
2288
2289  quic_crypto_batch_rx_packets (&qm->
2290				wrk_ctx[thread_index].crypto_context_batch);
2291
2292  for (i = 0; i < max_packets; i++)
2293    {
2294      switch (packets_ctx[i].ptype)
2295	{
2296	case QUIC_PACKET_TYPE_RECEIVE:
2297	  ctx = quic_ctx_get (packets_ctx[i].ctx_index, thread_index);
2298	  rv = quicly_receive (ctx->conn, NULL, &packets_ctx[i].sa,
2299			       &packets_ctx[i].packet);
2300	  if (rv && rv != QUICLY_ERROR_PACKET_IGNORED)
2301	    {
2302	      QUIC_ERR ("quicly_receive return error %U",
2303			quic_format_err, rv);
2304	    }
2305	  break;
2306	case QUIC_PACKET_TYPE_ACCEPT:
2307	  quic_accept_connection (&packets_ctx[i]);
2308	  break;
2309	case QUIC_PACKET_TYPE_RESET:
2310	  quic_reset_connection (udp_session_handle, &packets_ctx[i]);
2311	  break;
2312	}
2313    }
2314  ctx = prev_ctx = NULL;
2315  for (i = 0; i < max_packets; i++)
2316    {
2317      prev_ctx = ctx;
2318      switch (packets_ctx[i].ptype)
2319	{
2320	case QUIC_PACKET_TYPE_RECEIVE:
2321	  ctx = quic_ctx_get (packets_ctx[i].ctx_index,
2322			      packets_ctx[i].thread_index);
2323	  quic_check_quic_session_connected (ctx);
2324	  ctx = quic_ctx_get (packets_ctx[i].ctx_index,
2325			      packets_ctx[i].thread_index);
2326	  break;
2327	case QUIC_PACKET_TYPE_ACCEPT:
2328	  ctx = quic_ctx_get (packets_ctx[i].ctx_index,
2329			      packets_ctx[i].thread_index);
2330	  break;
2331	default:
2332	  continue;		/* this exits the for loop since other packet types are
2333				   necessarily the last in the batch */
2334	}
2335      if (ctx != prev_ctx)
2336	quic_send_packets (ctx);
2337    }
2338
2339  udp_session = session_get_from_handle (udp_session_handle);	/*  session alloc might have happened */
2340  f = udp_session->rx_fifo;
2341  svm_fifo_dequeue_drop (f, fifo_offset);
2342
2343  if (svm_fifo_max_dequeue (f))
2344    goto rx_start;
2345
2346  return 0;
2347}
2348
2349always_inline void
2350quic_common_get_transport_endpoint (quic_ctx_t * ctx,
2351				    transport_endpoint_t * tep, u8 is_lcl)
2352{
2353  session_t *udp_session;
2354  if (!quic_ctx_is_stream (ctx))
2355    {
2356      udp_session = session_get_from_handle (ctx->udp_session_handle);
2357      session_get_endpoint (udp_session, tep, is_lcl);
2358    }
2359}
2360
2361static void
2362quic_get_transport_listener_endpoint (u32 listener_index,
2363				      transport_endpoint_t * tep, u8 is_lcl)
2364{
2365  quic_ctx_t *ctx;
2366  app_listener_t *app_listener;
2367  session_t *udp_listen_session;
2368  ctx = quic_ctx_get (listener_index, vlib_get_thread_index ());
2369  if (quic_ctx_is_listener (ctx))
2370    {
2371      app_listener = app_listener_get_w_handle (ctx->udp_session_handle);
2372      udp_listen_session = app_listener_get_session (app_listener);
2373      return session_get_endpoint (udp_listen_session, tep, is_lcl);
2374    }
2375  quic_common_get_transport_endpoint (ctx, tep, is_lcl);
2376}
2377
2378static void
2379quic_get_transport_endpoint (u32 ctx_index, u32 thread_index,
2380			     transport_endpoint_t * tep, u8 is_lcl)
2381{
2382  quic_ctx_t *ctx;
2383  ctx = quic_ctx_get (ctx_index, thread_index);
2384  quic_common_get_transport_endpoint (ctx, tep, is_lcl);
2385}
2386
2387/* *INDENT-OFF* */
2388static session_cb_vft_t quic_app_cb_vft = {
2389  .session_accept_callback = quic_udp_session_accepted_callback,
2390  .session_disconnect_callback = quic_udp_session_disconnect_callback,
2391  .session_connected_callback = quic_udp_session_connected_callback,
2392  .session_reset_callback = quic_udp_session_reset_callback,
2393  .session_migrate_callback = quic_udp_session_migrate_callback,
2394  .add_segment_callback = quic_add_segment_callback,
2395  .del_segment_callback = quic_del_segment_callback,
2396  .builtin_app_rx_callback = quic_udp_session_rx_callback,
2397  .session_cleanup_callback = quic_udp_session_cleanup_callback,
2398  .app_cert_key_pair_delete_callback = quic_app_cert_key_pair_delete_callback,
2399};
2400
2401static const transport_proto_vft_t quic_proto = {
2402  .connect = quic_connect,
2403  .close = quic_proto_on_close,
2404  .start_listen = quic_start_listen,
2405  .stop_listen = quic_stop_listen,
2406  .get_connection = quic_connection_get,
2407  .get_listener = quic_listener_get,
2408  .update_time = quic_update_time,
2409  .app_rx_evt = quic_custom_app_rx_callback,
2410  .custom_tx = quic_custom_tx_callback,
2411  .format_connection = format_quic_connection,
2412  .format_half_open = format_quic_half_open,
2413  .format_listener = format_quic_listener,
2414  .get_transport_endpoint = quic_get_transport_endpoint,
2415  .get_transport_listener_endpoint = quic_get_transport_listener_endpoint,
2416  .transport_options = {
2417    .name = "quic",
2418    .short_name = "Q",
2419    .tx_type = TRANSPORT_TX_INTERNAL,
2420    .service_type = TRANSPORT_SERVICE_APP,
2421  },
2422};
2423/* *INDENT-ON* */
2424
2425static quicly_stream_open_t on_stream_open = { quic_on_stream_open };
2426static quicly_closed_by_peer_t on_closed_by_peer = { quic_on_closed_by_peer };
2427static quicly_now_t quicly_vpp_now_cb = { quic_get_time };
2428
2429static void
2430quic_register_cipher_suite (crypto_engine_type_t type,
2431			    ptls_cipher_suite_t ** ciphers)
2432{
2433  quic_main_t *qm = &quic_main;
2434  vec_validate (qm->quic_ciphers, type);
2435  clib_bitmap_set (qm->available_crypto_engines, type, 1);
2436  qm->quic_ciphers[type] = ciphers;
2437}
2438
2439static void
2440quic_update_fifo_size ()
2441{
2442  quic_main_t *qm = &quic_main;
2443  segment_manager_props_t *seg_mgr_props =
2444    application_get_segment_manager_properties (qm->app_index);
2445
2446  if (!seg_mgr_props)
2447    {
2448      clib_warning
2449	("error while getting segment_manager_props_t, can't update fifo-size");
2450      return;
2451    }
2452
2453  seg_mgr_props->tx_fifo_size = qm->udp_fifo_size;
2454  seg_mgr_props->rx_fifo_size = qm->udp_fifo_size;
2455}
2456
2457static clib_error_t *
2458quic_init (vlib_main_t * vm)
2459{
2460  u32 segment_size = 256 << 20;
2461  vlib_thread_main_t *vtm = vlib_get_thread_main ();
2462  tw_timer_wheel_1t_3w_1024sl_ov_t *tw;
2463  vnet_app_attach_args_t _a, *a = &_a;
2464  u64 options[APP_OPTIONS_N_OPTIONS];
2465  quic_main_t *qm = &quic_main;
2466  u32 num_threads, i;
2467
2468  num_threads = 1 /* main thread */  + vtm->n_threads;
2469
2470  clib_memset (a, 0, sizeof (*a));
2471  clib_memset (options, 0, sizeof (options));
2472
2473  a->session_cb_vft = &quic_app_cb_vft;
2474  a->api_client_index = APP_INVALID_INDEX;
2475  a->options = options;
2476  a->name = format (0, "quic");
2477  a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size;
2478  a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = segment_size;
2479  a->options[APP_OPTIONS_RX_FIFO_SIZE] = qm->udp_fifo_size;
2480  a->options[APP_OPTIONS_TX_FIFO_SIZE] = qm->udp_fifo_size;
2481  a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = qm->udp_fifo_prealloc;
2482  a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN;
2483  a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
2484  a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP;
2485
2486  if (vnet_application_attach (a))
2487    {
2488      clib_warning ("failed to attach quic app");
2489      return clib_error_return (0, "failed to attach quic app");
2490    }
2491
2492  vec_validate (qm->ctx_pool, num_threads - 1);
2493  vec_validate (qm->wrk_ctx, num_threads - 1);
2494
2495  for (i = 0; i < num_threads; i++)
2496    {
2497      qm->wrk_ctx[i].next_cid.thread_id = i;
2498      tw = &qm->wrk_ctx[i].timer_wheel;
2499      tw_timer_wheel_init_1t_3w_1024sl_ov (tw, quic_expired_timers_dispatch,
2500					   1e-3 /* timer period 1ms */ , ~0);
2501      tw->last_run_time = vlib_time_now (vlib_get_main ());
2502      clib_bihash_init_24_8 (&qm->wrk_ctx[i].crypto_context_hash,
2503			     "quic crypto contexts", 64, 128 << 10);
2504
2505      qm->wrk_ctx[i].crypto_context_batch.nb_rx_packets = 0;
2506      qm->wrk_ctx[i].crypto_context_batch.nb_tx_packets = 0;
2507    }
2508
2509  clib_bihash_init_16_8 (&qm->connection_hash, "quic connections", 1024,
2510			 4 << 20);
2511
2512  qm->app_index = a->app_index;
2513  qm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock
2514    / QUIC_TSTAMP_RESOLUTION;
2515  qm->session_cache.super.cb = quic_encrypt_ticket_cb;
2516
2517  transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto,
2518			       FIB_PROTOCOL_IP4, ~0);
2519  transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto,
2520			       FIB_PROTOCOL_IP6, ~0);
2521
2522  clib_bitmap_alloc (qm->available_crypto_engines,
2523		     app_crypto_engine_n_types ());
2524  quic_register_cipher_suite (CRYPTO_ENGINE_VPP, quic_crypto_cipher_suites);
2525  quic_register_cipher_suite (CRYPTO_ENGINE_PICOTLS,
2526			      ptls_openssl_cipher_suites);
2527  qm->default_crypto_engine = CRYPTO_ENGINE_VPP;
2528  qm->max_packets_per_key = DEFAULT_MAX_PACKETS_PER_KEY;
2529  clib_rwlock_init (&qm->crypto_keys_quic_rw_lock);
2530
2531  vnet_crypto_main_t *cm = &crypto_main;
2532  if (vec_len (cm->engines) == 0)
2533    qm->vnet_crypto_enabled = 0;
2534  else
2535    qm->vnet_crypto_enabled = 1;
2536
2537  vec_free (a->name);
2538  return 0;
2539}
2540
2541VLIB_INIT_FUNCTION (quic_init);
2542
2543static clib_error_t *
2544quic_plugin_crypto_command_fn (vlib_main_t * vm,
2545			       unformat_input_t * input,
2546			       vlib_cli_command_t * cmd)
2547{
2548  quic_main_t *qm = &quic_main;
2549  if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT)
2550    return clib_error_return (0, "unknown input '%U'",
2551			      format_unformat_error, input);
2552  if (unformat (input, "vpp"))
2553    qm->default_crypto_engine = CRYPTO_ENGINE_VPP;
2554  else if (unformat (input, "picotls"))
2555    qm->default_crypto_engine = CRYPTO_ENGINE_PICOTLS;
2556  else
2557    return clib_error_return (0, "unknown input '%U'",
2558			      format_unformat_error, input);
2559  return 0;
2560}
2561
2562u64 quic_fifosize = 0;
2563static clib_error_t *
2564quic_plugin_set_fifo_size_command_fn (vlib_main_t * vm,
2565				      unformat_input_t * input,
2566				      vlib_cli_command_t * cmd)
2567{
2568  quic_main_t *qm = &quic_main;
2569  unformat_input_t _line_input, *line_input = &_line_input;
2570  uword tmp;
2571
2572  if (!unformat_user (input, unformat_line_input, line_input))
2573    return 0;
2574
2575  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2576    {
2577      if (unformat (line_input, "%U", unformat_memory_size, &tmp))
2578	{
2579	  if (tmp >= 0x100000000ULL)
2580	    {
2581	      return clib_error_return
2582		(0, "fifo-size %llu (0x%llx) too large", tmp, tmp);
2583	    }
2584	  qm->udp_fifo_size = tmp;
2585	  quic_update_fifo_size ();
2586	}
2587      else
2588	return clib_error_return (0, "unknown input '%U'",
2589				  format_unformat_error, line_input);
2590    }
2591
2592  return 0;
2593}
2594
2595static inline u64
2596quic_get_counter_value (u32 event_code)
2597{
2598  vlib_node_t *n;
2599  vlib_main_t *vm;
2600  vlib_error_main_t *em;
2601
2602  u32 code, i;
2603  u64 c, sum = 0;
2604  int index = 0;
2605
2606  vm = vlib_get_main ();
2607  em = &vm->error_main;
2608  n = vlib_get_node (vm, quic_input_node.index);
2609  code = event_code;
2610  /* *INDENT-OFF* */
2611  foreach_vlib_main(({
2612    em = &this_vlib_main->error_main;
2613    i = n->error_heap_index + code;
2614    c = em->counters[i];
2615
2616    if (i < vec_len (em->counters_last_clear))
2617       c -= em->counters_last_clear[i];
2618    sum += c;
2619    index++;
2620  }));
2621  /* *INDENT-ON* */
2622  return sum;
2623}
2624
2625static void
2626quic_show_aggregated_stats (vlib_main_t * vm)
2627{
2628  u32 num_workers = vlib_num_workers ();
2629  quic_main_t *qm = &quic_main;
2630  quic_ctx_t *ctx = NULL;
2631  quicly_stats_t st, agg_stats;
2632  u32 i, nconn = 0, nstream = 0;
2633
2634  clib_memset (&agg_stats, 0, sizeof (agg_stats));
2635  for (i = 0; i < num_workers + 1; i++)
2636    {
2637      /* *INDENT-OFF* */
2638      pool_foreach (ctx, qm->ctx_pool[i],
2639      ({
2640	if (quic_ctx_is_conn (ctx) && ctx->conn)
2641	  {
2642	    quicly_get_stats (ctx->conn, &st);
2643	    agg_stats.rtt.smoothed += st.rtt.smoothed;
2644	    agg_stats.rtt.minimum += st.rtt.minimum;
2645	    agg_stats.rtt.variance += st.rtt.variance;
2646	    agg_stats.num_packets.received += st.num_packets.received;
2647	    agg_stats.num_packets.sent += st.num_packets.sent;
2648	    agg_stats.num_packets.lost += st.num_packets.lost;
2649	    agg_stats.num_packets.ack_received += st.num_packets.ack_received;
2650	    agg_stats.num_bytes.received += st.num_bytes.received;
2651	    agg_stats.num_bytes.sent += st.num_bytes.sent;
2652	    nconn++;
2653	  }
2654	else if (quic_ctx_is_stream (ctx))
2655	  nstream++;
2656      }));
2657      /* *INDENT-ON* */
2658    }
2659  vlib_cli_output (vm, "-------- Connections --------");
2660  vlib_cli_output (vm, "Current:         %u", nconn);
2661  vlib_cli_output (vm, "Opened:          %d",
2662		   quic_get_counter_value (QUIC_ERROR_OPENED_CONNECTION));
2663  vlib_cli_output (vm, "Closed:          %d",
2664		   quic_get_counter_value (QUIC_ERROR_CLOSED_CONNECTION));
2665  vlib_cli_output (vm, "---------- Streams ----------");
2666  vlib_cli_output (vm, "Current:         %u", nstream);
2667  vlib_cli_output (vm, "Opened:          %d",
2668		   quic_get_counter_value (QUIC_ERROR_OPENED_STREAM));
2669  vlib_cli_output (vm, "Closed:          %d",
2670		   quic_get_counter_value (QUIC_ERROR_CLOSED_STREAM));
2671  vlib_cli_output (vm, "---------- Packets ----------");
2672  vlib_cli_output (vm, "RX Total:        %d",
2673		   quic_get_counter_value (QUIC_ERROR_RX_PACKETS));
2674  vlib_cli_output (vm, "RX 0RTT:         %d",
2675		   quic_get_counter_value (QUIC_ERROR_ZERO_RTT_RX_PACKETS));
2676  vlib_cli_output (vm, "RX 1RTT:         %d",
2677		   quic_get_counter_value (QUIC_ERROR_ONE_RTT_RX_PACKETS));
2678  vlib_cli_output (vm, "TX Total:        %d",
2679		   quic_get_counter_value (QUIC_ERROR_TX_PACKETS));
2680  vlib_cli_output (vm, "----------- Stats -----------");
2681  vlib_cli_output (vm, "Min      RTT     %f",
2682		   nconn > 0 ? agg_stats.rtt.minimum / nconn : 0);
2683  vlib_cli_output (vm, "Smoothed RTT     %f",
2684		   nconn > 0 ? agg_stats.rtt.smoothed / nconn : 0);
2685  vlib_cli_output (vm, "Variance on RTT  %f",
2686		   nconn > 0 ? agg_stats.rtt.variance / nconn : 0);
2687  vlib_cli_output (vm, "Packets Received %lu",
2688		   agg_stats.num_packets.received);
2689  vlib_cli_output (vm, "Packets Sent     %lu", agg_stats.num_packets.sent);
2690  vlib_cli_output (vm, "Packets Lost     %lu", agg_stats.num_packets.lost);
2691  vlib_cli_output (vm, "Packets Acks     %lu",
2692		   agg_stats.num_packets.ack_received);
2693  vlib_cli_output (vm, "RX bytes         %lu", agg_stats.num_bytes.received);
2694  vlib_cli_output (vm, "TX bytes         %lu", agg_stats.num_bytes.sent);
2695}
2696
2697static u8 *
2698quic_format_quicly_conn_id (u8 * s, va_list * args)
2699{
2700  quicly_cid_plaintext_t *mid = va_arg (*args, quicly_cid_plaintext_t *);
2701  s = format (s, "C%x_%x", mid->master_id, mid->thread_id);
2702  return s;
2703}
2704
2705static u8 *
2706quic_format_quicly_stream_id (u8 * s, va_list * args)
2707{
2708  quicly_stream_t *stream = va_arg (*args, quicly_stream_t *);
2709  s =
2710    format (s, "%U S%lx", quic_format_quicly_conn_id,
2711	    quicly_get_master_id (stream->conn), stream->stream_id);
2712  return s;
2713}
2714
2715static u8 *
2716quic_format_listener_ctx (u8 * s, va_list * args)
2717{
2718  quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
2719  s = format (s, "[#%d][%x][Listener]", ctx->c_thread_index, ctx->c_c_index);
2720  return s;
2721}
2722
2723static u8 *
2724quic_format_connection_ctx (u8 * s, va_list * args)
2725{
2726  quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
2727  quicly_stats_t quicly_stats;
2728
2729  s = format (s, "[#%d][%x]", ctx->c_thread_index, ctx->c_c_index);
2730
2731  if (!ctx->conn)
2732    {
2733      s = format (s, "- no conn -\n");
2734      return s;
2735    }
2736  s = format (s, "[%U]",
2737	      quic_format_quicly_conn_id, quicly_get_master_id (ctx->conn));
2738  quicly_get_stats (ctx->conn, &quicly_stats);
2739
2740  s = format (s, "[RTT >%3d, ~%3d, V%3d, last %3d]",
2741	      quicly_stats.rtt.minimum, quicly_stats.rtt.smoothed,
2742	      quicly_stats.rtt.variance, quicly_stats.rtt.latest);
2743  s = format (s, " TX:%d RX:%d loss:%d ack:%d",
2744	      quicly_stats.num_packets.sent,
2745	      quicly_stats.num_packets.received,
2746	      quicly_stats.num_packets.lost,
2747	      quicly_stats.num_packets.ack_received);
2748  return s;
2749}
2750
2751static u8 *
2752quic_format_stream_ctx (u8 * s, va_list * args)
2753{
2754  quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *);
2755  session_t *stream_session;
2756  quicly_stream_t *stream = ctx->stream;
2757  u32 txs, rxs;
2758
2759  s = format (s, "[#%d][%x]", ctx->c_thread_index, ctx->c_c_index);
2760  s = format (s, "[%U]", quic_format_quicly_stream_id, stream);
2761
2762  stream_session = session_get_if_valid (ctx->c_s_index, ctx->c_thread_index);
2763  if (!stream_session)
2764    {
2765      s = format (s, "- no session -\n");
2766      return s;
2767    }
2768  txs = svm_fifo_max_dequeue (stream_session->tx_fifo);
2769  rxs = svm_fifo_max_dequeue (stream_session->rx_fifo);
2770  s = format (s, "[rx %d tx %d]\n", rxs, txs);
2771  return s;
2772}
2773
2774static clib_error_t *
2775quic_show_connections_command_fn (vlib_main_t * vm,
2776				  unformat_input_t * input,
2777				  vlib_cli_command_t * cmd)
2778{
2779  unformat_input_t _line_input, *line_input = &_line_input;
2780  u8 show_listeners = 0, show_conn = 0, show_stream = 0;
2781  u32 num_workers = vlib_num_workers ();
2782  quic_main_t *qm = &quic_main;
2783  clib_error_t *error = 0;
2784  quic_ctx_t *ctx = NULL;
2785
2786  session_cli_return_if_not_enabled ();
2787
2788  if (!unformat_user (input, unformat_line_input, line_input))
2789    {
2790      quic_show_aggregated_stats (vm);
2791      return 0;
2792    }
2793
2794  while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT)
2795    {
2796      if (unformat (line_input, "listener"))
2797	show_listeners = 1;
2798      else if (unformat (line_input, "conn"))
2799	show_conn = 1;
2800      else if (unformat (line_input, "stream"))
2801	show_stream = 1;
2802      else
2803	{
2804	  error = clib_error_return (0, "unknown input `%U'",
2805				     format_unformat_error, line_input);
2806	  goto done;
2807	}
2808    }
2809
2810  for (int i = 0; i < num_workers + 1; i++)
2811    {
2812      /* *INDENT-OFF* */
2813      pool_foreach (ctx, qm->ctx_pool[i],
2814      ({
2815        if (quic_ctx_is_stream (ctx) && show_stream)
2816          vlib_cli_output (vm, "%U", quic_format_stream_ctx, ctx);
2817        else if (quic_ctx_is_listener (ctx) && show_listeners)
2818          vlib_cli_output (vm, "%U", quic_format_listener_ctx, ctx);
2819	else if (quic_ctx_is_conn (ctx) && show_conn)
2820          vlib_cli_output (vm, "%U", quic_format_connection_ctx, ctx);
2821      }));
2822      /* *INDENT-ON* */
2823    }
2824
2825done:
2826  unformat_free (line_input);
2827  return error;
2828}
2829
2830/* *INDENT-OFF* */
2831VLIB_CLI_COMMAND (quic_plugin_crypto_command, static) =
2832{
2833  .path = "quic set crypto api",
2834  .short_help = "quic set crypto api [picotls, vpp]",
2835  .function = quic_plugin_crypto_command_fn,
2836};
2837VLIB_CLI_COMMAND(quic_plugin_set_fifo_size_command, static)=
2838{
2839  .path = "quic set fifo-size",
2840  .short_help = "quic set fifo-size N[K|M|G] (default 64K)",
2841  .function = quic_plugin_set_fifo_size_command_fn,
2842};
2843VLIB_CLI_COMMAND(quic_show_ctx_command, static)=
2844{
2845  .path = "show quic",
2846  .short_help = "show quic",
2847  .function = quic_show_connections_command_fn,
2848};
2849VLIB_CLI_COMMAND (quic_list_crypto_context_command, static) =
2850{
2851  .path = "show quic crypto context",
2852  .short_help = "list quic crypto contextes",
2853  .function = quic_list_crypto_context_command_fn,
2854};
2855VLIB_CLI_COMMAND (quic_set_max_packets_per_key, static) =
2856{
2857  .path = "set quic max_packets_per_key",
2858  .short_help = "set quic max_packets_per_key 16777216",
2859  .function = quic_set_max_packets_per_key_fn,
2860};
2861VLIB_PLUGIN_REGISTER () =
2862{
2863  .version = VPP_BUILD_VER,
2864  .description = "Quic transport protocol",
2865  .default_disabled = 1,
2866};
2867/* *INDENT-ON* */
2868
2869static clib_error_t *
2870quic_config_fn (vlib_main_t * vm, unformat_input_t * input)
2871{
2872  quic_main_t *qm = &quic_main;
2873  uword tmp;
2874  u32 i;
2875
2876  qm->udp_fifo_size = QUIC_DEFAULT_FIFO_SIZE;
2877  qm->udp_fifo_prealloc = 0;
2878  qm->connection_timeout = QUIC_DEFAULT_CONN_TIMEOUT;
2879  while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
2880    {
2881      if (unformat (input, "fifo-size %U", unformat_memory_size, &tmp))
2882	{
2883	  if (tmp >= 0x100000000ULL)
2884	    {
2885	      return clib_error_return (0,
2886					"fifo-size %llu (0x%llx) too large",
2887					tmp, tmp);
2888	    }
2889	  qm->udp_fifo_size = tmp;
2890	}
2891      else if (unformat (input, "conn-timeout %u", &i))
2892	qm->connection_timeout = i;
2893      else if (unformat (input, "fifo-prealloc %u", &i))
2894	qm->udp_fifo_prealloc = i;
2895      else
2896	return clib_error_return (0, "unknown input '%U'",
2897				  format_unformat_error, input);
2898    }
2899
2900  return 0;
2901}
2902
2903VLIB_EARLY_CONFIG_FUNCTION (quic_config_fn, "quic");
2904
2905static uword
2906quic_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
2907	      vlib_frame_t * frame)
2908{
2909  return 0;
2910}
2911
2912/* *INDENT-OFF* */
2913VLIB_REGISTER_NODE (quic_input_node) =
2914{
2915  .function = quic_node_fn,
2916  .name = "quic-input",
2917  .vector_size = sizeof (u32),
2918  .type = VLIB_NODE_TYPE_INTERNAL,
2919  .n_errors = ARRAY_LEN (quic_error_strings),
2920  .error_strings = quic_error_strings,
2921};
2922/* *INDENT-ON* */
2923
2924/*
2925 * fd.io coding-style-patch-verification: ON
2926 *
2927 * Local Variables:
2928 * eval: (c-set-style "gnu")
2929 * End:
2930 */
2931