diff options
Diffstat (limited to 'src/plugins')
| -rw-r--r-- | src/plugins/quic/CMakeLists.txt | 43 | ||||
| -rw-r--r-- | src/plugins/quic/quic.c | 1592 | ||||
| -rw-r--r-- | src/plugins/quic/quic.h | 118 |
3 files changed, 1753 insertions, 0 deletions
diff --git a/src/plugins/quic/CMakeLists.txt b/src/plugins/quic/CMakeLists.txt new file mode 100644 index 00000000000..ccd49682e8c --- /dev/null +++ b/src/plugins/quic/CMakeLists.txt @@ -0,0 +1,43 @@ + +# Copyright (c) 2019 Cisco +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at: +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +message(STATUS "Looking for quicly") +unset(QUIC_LINK_LIBRARIES) + +find_path(QUICLY_INCLUDE_DIR NAMES quicly.h) +find_library (QUICLY_LIBRARY NAMES "libquicly.a") +find_library (PICOTLS_CORE_LIBRARY NAMES "libpicotls-core.a") +find_library (PICOTLS_OPENSSL_LIBRARY NAMES "libpicotls-openssl.a") + +list(APPEND QUIC_LINK_LIBRARIES + ${QUICLY_LIBRARY} + ${PICOTLS_CORE_LIBRARY} + ${PICOTLS_OPENSSL_LIBRARY} +) + +if(QUICLY_INCLUDE_DIR AND QUIC_LINK_LIBRARIES) + include_directories (${QUICLY_INCLUDE_DIR}) + add_vpp_plugin(quic + SOURCES + quic.c + + INSTALL_HEADERS + quic.h + + LINK_LIBRARIES ${QUIC_LINK_LIBRARIES} + ) + message(STATUS "Found quicly in ${QUICLY_INCLUDE_DIR}") +else() + message(WARNING "-- quicly not found - quic_plugin disabled") +endif() diff --git a/src/plugins/quic/quic.c b/src/plugins/quic/quic.c new file mode 100644 index 00000000000..82de6de130b --- /dev/null +++ b/src/plugins/quic/quic.c @@ -0,0 +1,1592 @@ +/* + * Copyright (c) 2019 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include <sys/socket.h> + +#include <vnet/session/application.h> +#include <vnet/session/transport.h> +#include <vnet/session/session.h> +#include <vlib/unix/plugin.h> +#include <vpp/app/version.h> +#include <openssl/pem.h> + +#include <vppinfra/lock.h> + +#include <quic/quic.h> + +#include <quicly/streambuf.h> +#include <picotls/openssl.h> +#include <picotls/pembase64.h> + +static quic_main_t quic_main; + +static void quic_update_timer (quic_ctx_t * ctx); +static int64_t quic_get_time (quicly_now_cb * self); +static void quic_connection_closed (u32 conn_index); +static void quic_disconnect (u32 ctx_index, u32 thread_index); + +#define QUIC_INT_MAX 0x3FFFFFFFFFFFFFFF + +u32 +quic_ctx_half_open_alloc (void) +{ + quic_main_t *qm = &quic_main; + u8 will_expand = 0; + quic_ctx_t *ctx; + u32 ctx_index; + + pool_get_aligned_will_expand (qm->half_open_ctx_pool, will_expand, 0); + if (PREDICT_FALSE (will_expand && vlib_num_workers ())) + { + clib_rwlock_writer_lock (&qm->half_open_rwlock); + pool_get (qm->half_open_ctx_pool, ctx); + ctx_index = ctx - qm->half_open_ctx_pool; + clib_rwlock_writer_unlock (&qm->half_open_rwlock); + } + else + { + /* reader lock assumption: only main thread will call pool_get */ + clib_rwlock_reader_lock (&qm->half_open_rwlock); + pool_get (qm->half_open_ctx_pool, ctx); + ctx_index = ctx - qm->half_open_ctx_pool; + clib_rwlock_reader_unlock (&qm->half_open_rwlock); + } + memset (ctx, 0, sizeof (*ctx)); + return ctx_index; +} + +void +quic_ctx_half_open_free (u32 ho_index) +{ + quic_main_t *qm = &quic_main; + clib_rwlock_writer_lock (&qm->half_open_rwlock); + pool_put_index (qm->half_open_ctx_pool, ho_index); + clib_rwlock_writer_unlock (&qm->half_open_rwlock); +} + +quic_ctx_t * +quic_ctx_half_open_get (u32 ctx_index) +{ + quic_main_t *qm = &quic_main; + clib_rwlock_reader_lock (&qm->half_open_rwlock); + return pool_elt_at_index (qm->half_open_ctx_pool, ctx_index); +} + +void +quic_ctx_half_open_reader_unlock () +{ + clib_rwlock_reader_unlock (&quic_main.half_open_rwlock); +} + +u32 +quic_ctx_half_open_index (quic_ctx_t * ctx) +{ + return (ctx - quic_main.half_open_ctx_pool); +} + +u32 +quic_ctx_alloc () +{ + u8 thread_index = vlib_get_thread_index (); + quic_main_t *qm = &quic_main; + quic_ctx_t *ctx; + + pool_get (qm->ctx_pool[thread_index], ctx); + + memset (ctx, 0, sizeof (quic_ctx_t)); + ctx->c_thread_index = thread_index; + return ctx - qm->ctx_pool[thread_index]; +} + +static void +quic_ctx_free (quic_ctx_t * ctx) +{ + QUIC_DBG (2, "Free ctx %u", ctx->c_c_index); + u32 thread_index = ctx->c_thread_index; + if (CLIB_DEBUG) + memset (ctx, 0xfb, sizeof (*ctx)); + pool_put (quic_main.ctx_pool[thread_index], ctx); +} + +static quic_ctx_t * +quic_ctx_get (u32 ctx_index) +{ + return pool_elt_at_index (quic_main.ctx_pool[vlib_get_thread_index ()], + ctx_index); +} + +static quic_ctx_t * +quic_ctx_get_w_thread (u32 ctx_index, u8 thread_index) +{ + return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index); +} + +static void +quic_disconnect_transport (quic_ctx_t * ctx) +{ + QUIC_DBG (2, "Called quic_disconnect_transport"); + vnet_disconnect_args_t a = { + .handle = ctx->c_quic_ctx_id.quic_session, + .app_index = quic_main.app_index, + }; + + if (vnet_disconnect_session (&a)) + clib_warning ("UDP session disconnect errored"); +} + +static int +quic_send_datagram (session_t * session, quicly_datagram_t * packet) +{ + QUIC_DBG (2, "Called quic_send_datagram at %ld", quic_get_time (NULL)); + u32 max_enqueue; + session_dgram_hdr_t hdr; + int rv; + u32 len; + svm_fifo_t *f; + transport_connection_t *tc; + + len = packet->data.len; + f = session->tx_fifo; + tc = session_get_transport (session); + + max_enqueue = svm_fifo_max_enqueue (f); + if (max_enqueue <= sizeof (session_dgram_hdr_t)) + return 1; + + max_enqueue -= sizeof (session_dgram_hdr_t); + + if (max_enqueue < len) + return 1; + + // Build packet header for fifo + hdr.data_length = len; + hdr.data_offset = 0; + hdr.is_ip4 = tc->is_ip4; + clib_memcpy (&hdr.lcl_ip, &tc->lcl_ip, sizeof (ip46_address_t)); + hdr.lcl_port = tc->lcl_port; + + // Read dest address from quicly-provided sockaddr + if (hdr.is_ip4) + { + ASSERT (packet->sa.sa_family == AF_INET); + struct sockaddr_in *sa4 = (struct sockaddr_in *) &packet->sa; + hdr.rmt_port = sa4->sin_port; + hdr.rmt_ip.ip4.as_u32 = sa4->sin_addr.s_addr; + } + else + { + ASSERT (packet->sa.sa_family == AF_INET6); + struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) &packet->sa; + hdr.rmt_port = sa6->sin6_port; + clib_memcpy (&hdr.rmt_ip.ip6, &sa6->sin6_addr, 16); + } + + rv = svm_fifo_enqueue_nowait (f, sizeof (hdr), (u8 *) & hdr); + ASSERT (rv == sizeof (hdr)); + if (svm_fifo_enqueue_nowait (f, len, packet->data.base) != len) + return 1; + return 0; +} + +static int +quic_send_packets (quic_ctx_t * ctx) +{ + //QUIC_DBG (2, "Called quic_send_packets"); + quicly_datagram_t *packets[16]; + session_t *quic_session; + quicly_conn_t *conn; + size_t num_packets, i; + int ret; + + quic_session = session_get_from_handle (ctx->c_quic_ctx_id.quic_session); + conn = ctx->c_quic_ctx_id.conn; + + if (!conn) + return 0; + + do + { + num_packets = sizeof (packets) / sizeof (packets[0]); + if ((ret = quicly_send (conn, packets, &num_packets)) == 0) + { + for (i = 0; i != num_packets; ++i) + { + if (quic_send_datagram (quic_session, packets[i])) + { + QUIC_DBG (2, "quic_send_datagram failed"); + goto stop_sending; + } + ret = 0; + quicly_default_free_packet_cb.cb + (&quicly_default_free_packet_cb, packets[i]); + } + } + else + { + QUIC_DBG (2, "quicly_send returned %d, closing connection\n", ret); + return ret; + } + } + while (ret == 0 && num_packets == sizeof (packets) / sizeof (packets[0])); + +stop_sending: + if (svm_fifo_set_event (quic_session->tx_fifo)) + session_send_io_evt_to_thread (quic_session->tx_fifo, FIFO_EVENT_APP_TX); + + quic_update_timer (ctx); + return 0; +} + +/***************************************************************************** + * START QUICLY CALLBACKS + * Called from QUIC lib + *****************************************************************************/ + +static int +quic_on_stop_sending (quicly_stream_t * stream, int error_code) +{ + QUIC_DBG (2, "received STOP_SENDING: %d", error_code); + return 0; +} + +static int +quic_on_receive_reset (quicly_stream_t * stream, int error_code) +{ + QUIC_DBG (2, "received RESET_STREAM: %d", error_code); + return 0; +} + +static int +quic_on_receive (quicly_stream_t * stream, size_t off, const void *src, + size_t len) +{ + QUIC_DBG (2, "received data: %lu bytes", len); + u32 to_enqueue, ctx_id; + quic_ctx_t *ctx; + session_t *app_session; + svm_fifo_t *rx_fifo; + app_worker_t *app_wrk; + + ctx_id = (u64) * quicly_get_data (stream->conn); + ctx = quic_ctx_get (ctx_id); + app_session = session_get_from_handle (ctx->c_quic_ctx_id.app_session); + rx_fifo = app_session->rx_fifo; + to_enqueue = svm_fifo_max_enqueue (rx_fifo); + if (to_enqueue > len) + to_enqueue = len; + // TODO what happens to the excess bytes? + + svm_fifo_enqueue_nowait (rx_fifo, to_enqueue, src); + + // Notify app + app_wrk = app_worker_get_if_valid (app_session->app_wrk_index); + if (PREDICT_TRUE (app_wrk != 0)) + app_worker_lock_and_send_event (app_wrk, app_session, SESSION_IO_EVT_RX); + return 0; +} + +static const quicly_stream_callbacks_t quic_stream_callbacks = { + .on_destroy = quicly_streambuf_destroy, + .on_send_shift = quicly_streambuf_egress_shift, + .on_send_emit = quicly_streambuf_egress_emit, + .on_send_stop = quic_on_stop_sending, + .on_receive = quic_on_receive, + .on_receive_reset = quic_on_receive_reset +}; + +static int +quic_on_stream_open (quicly_stream_open_cb * self, quicly_stream_t * stream) +{ + QUIC_DBG (2, "on_stream_open called"); + int ret; + if ((ret = + quicly_streambuf_create (stream, sizeof (quicly_streambuf_t))) != 0) + { + return ret; + } + stream->callbacks = &quic_stream_callbacks; + return 0; +} + +static quicly_stream_open_cb on_stream_open = { &quic_on_stream_open }; + +static void +quic_on_conn_close (quicly_closed_by_peer_cb * self, quicly_conn_t * conn, + int code, uint64_t frame_type, + const char *reason, size_t reason_len) +{ + QUIC_DBG (2, "connection closed, reason: %s", reason); + u32 ctx_index = (u64) * quicly_get_data (conn); + quic_connection_closed (ctx_index); +} + +static quicly_closed_by_peer_cb on_closed_by_peer = { &quic_on_conn_close }; + + +/***************************************************************************** + * END QUICLY CALLBACKS + *****************************************************************************/ + +/* single-entry session cache */ +struct st_util_session_cache_t +{ + ptls_encrypt_ticket_t super; + uint8_t id[32]; + ptls_iovec_t data; +}; + +static int +encrypt_ticket_cb (ptls_encrypt_ticket_t * _self, ptls_t * tls, + int is_encrypt, ptls_buffer_t * dst, ptls_iovec_t src) +{ + struct st_util_session_cache_t *self = (void *) _self; + int ret; + + if (is_encrypt) + { + + /* replace the cached entry along with a newly generated session id */ + free (self->data.base); + if ((self->data.base = malloc (src.len)) == NULL) + return PTLS_ERROR_NO_MEMORY; + + ptls_get_context (tls)->random_bytes (self->id, sizeof (self->id)); + memcpy (self->data.base, src.base, src.len); + self->data.len = src.len; + + /* store the session id in buffer */ + if ((ret = ptls_buffer_reserve (dst, sizeof (self->id))) != 0) + return ret; + memcpy (dst->base + dst->off, self->id, sizeof (self->id)); + dst->off += sizeof (self->id); + + } + else + { + + /* check if session id is the one stored in cache */ + if (src.len != sizeof (self->id)) + return PTLS_ERROR_SESSION_NOT_FOUND; + if (memcmp (self->id, src.base, sizeof (self->id)) != 0) + return PTLS_ERROR_SESSION_NOT_FOUND; + + /* return the cached value */ + if ((ret = ptls_buffer_reserve (dst, self->data.len)) != 0) + return ret; + memcpy (dst->base + dst->off, self->data.base, self->data.len); + dst->off += self->data.len; + } + + return 0; +} + +static struct st_util_session_cache_t sc = { + .super = { + .cb = encrypt_ticket_cb, + }, +}; + +/* *INDENT-OFF* */ +static ptls_context_t quic_tlsctx = { + .random_bytes = ptls_openssl_random_bytes, + .get_time = &ptls_get_time, + .key_exchanges = ptls_openssl_key_exchanges, + .cipher_suites = ptls_openssl_cipher_suites, + .certificates = { + .list = NULL, + .count = 0 + }, + .esni = NULL, + .on_client_hello = NULL, + .emit_certificate = NULL, + .sign_certificate = NULL, + .verify_certificate = NULL, + .ticket_lifetime = 86400, + .max_early_data_size = 8192, + .hkdf_label_prefix__obsolete = NULL, + .require_dhe_on_psk = 1, + .encrypt_ticket = &sc.super, +}; +/* *INDENT-ON* */ + +static int +ptls_compare_separator_line (const char *line, const char *begin_or_end, + const char *label) +{ + int ret = strncmp (line, "-----", 5); + size_t text_index = 5; + + if (ret == 0) + { + size_t begin_or_end_length = strlen (begin_or_end); + ret = strncmp (line + text_index, begin_or_end, begin_or_end_length); + text_index += begin_or_end_length; + } + + if (ret == 0) + { + ret = line[text_index] - ' '; + text_index++; + } + + if (ret == 0) + { + size_t label_length = strlen (label); + ret = strncmp (line + text_index, label, label_length); + text_index += label_length; + } + + if (ret == 0) + { + ret = strncmp (line + text_index, "-----", 5); + } + + return ret; +} + +static int +ptls_get_bio_pem_object (BIO * bio, const char *label, ptls_buffer_t * buf) +{ + int ret = PTLS_ERROR_PEM_LABEL_NOT_FOUND; + char line[256]; + ptls_base64_decode_state_t state; + + /* Get the label on a line by itself */ + while (BIO_gets (bio, line, 256)) + { + if (ptls_compare_separator_line (line, "BEGIN", label) == 0) + { + ret = 0; + ptls_base64_decode_init (&state); + break; + } + } + /* Get the data in the buffer */ + while (ret == 0 && BIO_gets (bio, line, 256)) + { + if (ptls_compare_separator_line (line, "END", label) == 0) + { + if (state.status == PTLS_BASE64_DECODE_DONE + || (state.status == PTLS_BASE64_DECODE_IN_PROGRESS + && state.nbc == 0)) + { + ret = 0; + } + else + { + ret = PTLS_ERROR_INCORRECT_BASE64; + } + break; + } + else + { + ret = ptls_base64_decode (line, &state, buf); + } + } + + return ret; +} + +int +ptls_load_bio_pem_objects (BIO * bio, const char *label, ptls_iovec_t * list, + size_t list_max, size_t * nb_objects) +{ + int ret = 0; + size_t count = 0; + + *nb_objects = 0; + + if (ret == 0) + { + while (count < list_max) + { + ptls_buffer_t buf; + + ptls_buffer_init (&buf, "", 0); + + ret = ptls_get_bio_pem_object (bio, label, &buf); + + if (ret == 0) + { + if (buf.off > 0 && buf.is_allocated) + { + list[count].base = buf.base; + list[count].len = buf.off; + count++; + } + else + { + ptls_buffer_dispose (&buf); + } + } + else + { + ptls_buffer_dispose (&buf); + break; + } + } + } + + if (ret == PTLS_ERROR_PEM_LABEL_NOT_FOUND && count > 0) + { + ret = 0; + } + + *nb_objects = count; + + return ret; +} + +#define PTLS_MAX_CERTS_IN_CONTEXT 16 + +int +ptls_load_bio_certificates (ptls_context_t * ctx, BIO * bio) +{ + int ret = 0; + + ctx->certificates.list = + (ptls_iovec_t *) malloc (PTLS_MAX_CERTS_IN_CONTEXT * + sizeof (ptls_iovec_t)); + + if (ctx->certificates.list == NULL) + { + ret = PTLS_ERROR_NO_MEMORY; + } + else + { + ret = + ptls_load_bio_pem_objects (bio, "CERTIFICATE", ctx->certificates.list, + PTLS_MAX_CERTS_IN_CONTEXT, + &ctx->certificates.count); + } + + return ret; +} + +static inline void +load_bio_certificate_chain (ptls_context_t * ctx, const char *cert_data) +{ + BIO *cert_bio; + cert_bio = BIO_new_mem_buf (cert_data, -1); + if (ptls_load_bio_certificates (ctx, cert_bio) != 0) + { + BIO_free (cert_bio); + fprintf (stderr, "failed to load certificate:%s\n", strerror (errno)); + exit (1); + } + BIO_free (cert_bio); +} + +static inline void +load_bio_private_key (ptls_context_t * ctx, const char *pk_data) +{ + static ptls_openssl_sign_certificate_t sc; + EVP_PKEY *pkey; + BIO *key_bio; + + key_bio = BIO_new_mem_buf (pk_data, -1); + pkey = PEM_read_bio_PrivateKey (key_bio, NULL, NULL, NULL); + BIO_free (key_bio); + + if (pkey == NULL) + { + fprintf (stderr, "failed to read private key from app configuration\n"); + exit (1); + } + + ptls_openssl_init_sign_certificate (&sc, pkey); + EVP_PKEY_free (pkey); + + ctx->sign_certificate = &sc.super; +} + +static void +quic_connection_closed (u32 ctx_index) +{ + QUIC_DBG (2, "QUIC connection closed"); + quic_ctx_t *ctx; + + ctx = quic_ctx_get (ctx_index); + // TODO if connection is not established, just delete the session + + // Do not try to send anything anymore + ctx->stream = NULL; + quicly_free (ctx->c_quic_ctx_id.conn); + ctx->c_quic_ctx_id.conn = NULL; + session_transport_closing_notify (&ctx->connection); +} + +static int64_t +quic_get_time (quicly_now_cb * self) +{ + // TODO read value set by set_time_now? + // (needs to change it not to call this function) + vlib_main_t *vlib_main = vlib_get_main (); + f64 time = vlib_time_now (vlib_main); + return (int64_t) (time * 1000.f); +} +quicly_now_cb quicly_vpp_now_cb = { quic_get_time }; + +static void +allocate_quicly_ctx (application_t * app, u8 is_client) +{ + QUIC_DBG (2, "Called allocate_quicly_ctx"); + struct + { + quicly_context_t _; + char cid_key[17]; + } *ctx_data; + quicly_context_t *quicly_ctx; + char *cid_key; + + ctx_data = malloc (sizeof (*ctx_data)); + quicly_ctx = &ctx_data->_; + app->quicly_ctx = (u64 *) quicly_ctx; + memcpy (quicly_ctx, &quicly_default_context, sizeof (quicly_context_t)); + + quicly_ctx->tls = &quic_tlsctx; + quicly_ctx->stream_open = &on_stream_open; + quicly_ctx->closed_by_peer = &on_closed_by_peer; + quicly_ctx->now = &quicly_vpp_now_cb; + + quicly_amend_ptls_context (quicly_ctx->tls); + + quicly_ctx->event_log.mask = INT64_MAX; + quicly_ctx->event_log.cb = quicly_new_default_event_log_cb (stderr); + + quicly_ctx->transport_params.max_data = QUIC_INT_MAX; + quicly_ctx->transport_params.max_streams_uni = QUIC_INT_MAX; + quicly_ctx->transport_params.max_streams_bidi = QUIC_INT_MAX; + quicly_ctx->transport_params.max_stream_data.bidi_local = QUIC_INT_MAX; + quicly_ctx->transport_params.max_stream_data.bidi_remote = QUIC_INT_MAX; + quicly_ctx->transport_params.max_stream_data.uni = QUIC_INT_MAX; + + if (!is_client) + { + load_bio_private_key (quicly_ctx->tls, (char *) app->tls_key); + load_bio_certificate_chain (quicly_ctx->tls, (char *) app->tls_cert); + cid_key = ctx_data->cid_key; + quicly_ctx->tls->random_bytes (cid_key, 16); + cid_key[16] = 0; + quicly_ctx->encrypt_cid = + quicly_new_default_encrypt_cid_cb (&ptls_openssl_bfecb, + &ptls_openssl_sha256, + ptls_iovec_init (cid_key, + strlen + (cid_key))); + quicly_ctx->decrypt_cid = + quicly_new_default_decrypt_cid_cb (&ptls_openssl_bfecb, + &ptls_openssl_sha256, + ptls_iovec_init (cid_key, + strlen + (cid_key))); + } +} + + +/***************************************************************************** + * BEGIN TIMERS HANDLING + *****************************************************************************/ + +static u32 +quic_set_time_now (u32 thread_index) +{ + quic_main.wrk_ctx[thread_index].time_now = quic_get_time (NULL); + return quic_main.wrk_ctx[thread_index].time_now; +} + +static void +quic_timer_expired (u32 conn_index) +{ + quic_ctx_t *ctx; + QUIC_DBG (2, "Timer expired for conn %u at %ld", conn_index, + quic_get_time (NULL)); + ctx = quic_ctx_get (conn_index); + ctx->c_quic_ctx_id.timer_handle = QUIC_TIMER_HANDLE_INVALID; + if (quic_send_packets (ctx)) + { + quic_connection_closed (conn_index); + } +} + +static void +quic_update_timer (quic_ctx_t * ctx) +{ + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + int64_t next_timeout; + + // This timeout is in ms which is the unit of our timer + next_timeout = quicly_get_first_timeout (ctx->c_quic_ctx_id.conn); + tw = &quic_main.wrk_ctx[vlib_get_thread_index ()].timer_wheel; + f64 next_timeout_f = ((f64) next_timeout) / 1000.f; + + clib_warning ("Timer set to %ld (%lf)", next_timeout, next_timeout_f); + + if (ctx->c_quic_ctx_id.timer_handle == QUIC_TIMER_HANDLE_INVALID) + { + if (next_timeout == INT64_MAX) + return; + ctx->c_quic_ctx_id.timer_handle = + tw_timer_start_1t_3w_1024sl_ov (tw, ctx->c_c_index, 0, + next_timeout_f); + } + else + { + if (next_timeout == INT64_MAX) + { + tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->c_quic_ctx_id.timer_handle); + ctx->c_quic_ctx_id.timer_handle = QUIC_TIMER_HANDLE_INVALID; + } + else + tw_timer_update_1t_3w_1024sl_ov (tw, ctx->c_quic_ctx_id.timer_handle, + next_timeout_f); + } +} + +static void +quic_expired_timers_dispatch (u32 * expired_timers) +{ + int i; + + for (i = 0; i < vec_len (expired_timers); i++) + { + quic_timer_expired (expired_timers[i]); + } +} + + +/***************************************************************************** + * END TIMERS HANDLING + * + * BEGIN TRANSPORT PROTO FUNCTIONS + *****************************************************************************/ + +int +quic_connect (transport_endpoint_cfg_t * tep) +{ + QUIC_DBG (2, "Called quic_connect"); + vnet_connect_args_t _cargs = { {}, }, *cargs = &_cargs; + session_endpoint_cfg_t *sep; + quic_main_t *qm = &quic_main; + quic_ctx_t *ctx; + app_worker_t *app_wrk; + application_t *app; + u32 ctx_index; + int error; + + sep = (session_endpoint_cfg_t *) tep; + ctx_index = quic_ctx_half_open_alloc (); + ctx = quic_ctx_half_open_get (ctx_index); + ctx->c_quic_ctx_id.parent_app_wrk_idx = sep->app_wrk_index; + ctx->c_s_index = 0xFAFAFAFA; + ctx->c_quic_ctx_id.udp_is_ip4 = sep->is_ip4; + ctx->c_quic_ctx_id.timer_handle = QUIC_TIMER_HANDLE_INVALID; + ctx->c_quic_ctx_id.conn_state = QUIC_CONN_STATE_HANDSHAKE; + ctx->client_opaque = sep->opaque; + if (sep->hostname) + { + ctx->srv_hostname = format (0, "%v", sep->hostname); + vec_terminate_c_string (ctx->srv_hostname); + } + else + { + // needed by quic for crypto + determining client / server + ctx->srv_hostname = + format (0, "%U", format_ip46_address, &sep->ip, sep->is_ip4); + } + + quic_ctx_half_open_reader_unlock (); + + clib_memcpy (&cargs->sep, sep, sizeof (session_endpoint_cfg_t)); + cargs->sep.transport_proto = TRANSPORT_PROTO_UDP; + cargs->app_index = qm->app_index; + cargs->api_context = ctx_index; + + app_wrk = app_worker_get (sep->app_wrk_index); + app = application_get (app_wrk->app_index); + ctx->c_quic_ctx_id.parent_app_id = app_wrk->app_index; + + allocate_quicly_ctx (app, 1 /* is client */ ); + + if ((error = vnet_connect (cargs))) + return error; + + QUIC_DBG (1, "New connect request %u", ctx_index); + return 0; +} + +static void +quic_disconnect (u32 ctx_index, u32 thread_index) +{ + QUIC_DBG (2, "Called quic_disconnect"); + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + quic_ctx_t *ctx; + + QUIC_DBG (1, "Disconnecting %x", ctx_index); + + ctx = quic_ctx_get (ctx_index); + if (ctx->c_quic_ctx_id.timer_handle != QUIC_TIMER_HANDLE_INVALID) + { + tw = &quic_main.wrk_ctx[vlib_get_thread_index ()].timer_wheel; + tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->c_quic_ctx_id.timer_handle); + } + quic_disconnect_transport (ctx); + // This removes the session from the lookup table and frees it. + session_transport_delete_notify (&ctx->connection); + quic_ctx_free (ctx); +} + +u32 +quic_start_listen (u32 app_listen_session_index, transport_endpoint_t * tep) +{ + QUIC_DBG (2, "Called quic_start_listen"); + vnet_listen_args_t _bargs, *args = &_bargs; + quic_main_t *qm = &quic_main; + session_handle_t udp_handle; + session_endpoint_cfg_t *sep; + session_t *quic_listen_session, *app_listen_session; + app_worker_t *app_wrk; + application_t *app; + quic_ctx_t *lctx; + u32 lctx_index; + app_listener_t *app_listener; + + sep = (session_endpoint_cfg_t *) tep; + app_wrk = app_worker_get (sep->app_wrk_index); + app = application_get (app_wrk->app_index); + + allocate_quicly_ctx (app, 0 /* is_client */ ); + + sep->transport_proto = TRANSPORT_PROTO_UDP; + memset (args, 0, sizeof (*args)); + args->app_index = qm->app_index; + args->sep_ext = *sep; + args->sep_ext.ns_index = app->ns_index; + if (vnet_listen (args)) + return -1; + + lctx_index = quic_ctx_alloc (); // listener + udp_handle = args->handle; + app_listener = app_listener_get_w_handle (udp_handle); + quic_listen_session = app_listener_get_session (app_listener); + quic_listen_session->opaque = lctx_index; + + app_listen_session = listen_session_get (app_listen_session_index); + + lctx = quic_ctx_get (lctx_index); // listener + lctx->is_listener = 1; + lctx->c_quic_ctx_id.parent_app_wrk_idx = sep->app_wrk_index; + lctx->c_quic_ctx_id.parent_app_id = app_wrk->app_index; + lctx->c_quic_ctx_id.quic_session = udp_handle; + lctx->c_quic_ctx_id.app_session = + listen_session_get_handle (app_listen_session); + lctx->c_quic_ctx_id.udp_is_ip4 = sep->is_ip4; + + QUIC_DBG (1, "Started listening %d", lctx_index); + return lctx_index; +} + +u32 +quic_stop_listen (u32 lctx_index) +{ + QUIC_DBG (2, "Called quic_stop_listen"); + quic_ctx_t *lctx; + + lctx = quic_ctx_get (lctx_index); // listener + vnet_unlisten_args_t a = { + .handle = lctx->c_quic_ctx_id.quic_session, + .app_index = quic_main.app_index, + .wrk_map_index = 0 /* default wrk */ + }; + if (vnet_unlisten (&a)) + clib_warning ("unlisten errored"); + + // TODO: crypto state cleanup + + quic_ctx_free (lctx); // listener + return 0; +} + +transport_connection_t * +quic_connection_get (u32 ctx_index, u32 thread_index) +{ + QUIC_DBG (2, "Called quic_connection_get"); + quic_ctx_t *ctx; + ctx = quic_ctx_get_w_thread (ctx_index, thread_index); + return &ctx->connection; +} + +transport_connection_t * +quic_listener_get (u32 listener_index) +{ + QUIC_DBG (2, "Called quic_listener_get"); + quic_ctx_t *ctx; + ctx = quic_ctx_get (listener_index); + return &ctx->connection; +} + +static void +quic_update_time (f64 now, u8 thread_index) +{ + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + + tw = &quic_main.wrk_ctx[thread_index].timer_wheel; + quic_set_time_now (thread_index); + tw_timer_expire_timers_1t_3w_1024sl_ov (tw, now); +} + +static u8 * +format_quic_connection (u8 * s, va_list * args) +{ + s = format (s, "[QUIC] connection"); + return s; +} + +static u8 * +format_quic_half_open (u8 * s, va_list * args) +{ + u32 qc_index = va_arg (*args, u32); + quic_ctx_t *ctx = quic_ctx_half_open_get (qc_index); + s = format (s, "[QUIC] half-open app %u", ctx->c_quic_ctx_id.parent_app_id); + quic_ctx_half_open_reader_unlock (); + return s; +} + +// TODO improve +static u8 * +format_quic_listener (u8 * s, va_list * args) +{ + s = format (s, "[QUIC] listener"); + return s; +} + +/***************************************************************************** + * END TRANSPORT PROTO FUNCTIONS + * + * START SESSION CALLBACKS + * Called from UDP layer + *****************************************************************************/ + +static inline void +quic_build_sockaddr (struct sockaddr *sa, socklen_t * salen, + ip46_address_t * addr, u16 port, u8 is_ip4) +{ + if (is_ip4) + { + struct sockaddr_in *sa4 = (struct sockaddr_in *) sa; + sa4->sin_family = AF_INET; + sa4->sin_port = port; + sa4->sin_addr.s_addr = addr->ip4.as_u32; + *salen = sizeof (struct sockaddr_in); + } + else + { + struct sockaddr_in6 *sa6 = (struct sockaddr_in6 *) sa; + sa6->sin6_family = AF_INET6; + sa6->sin6_port = port; + clib_memcpy (&sa6->sin6_addr, &addr->ip6, 16); + *salen = sizeof (struct sockaddr_in6); + } +} + +static int +quic_delayed_notify_app_connected (void *ctx_index) +{ + QUIC_DBG (1, "quic_notify_app_connected"); + session_t *app_session; + app_worker_t *app_wrk; + quic_ctx_t *ctx; + ctx = quic_ctx_get ((u32) (u64) ctx_index); + + app_wrk = app_worker_get_if_valid (ctx->c_quic_ctx_id.parent_app_wrk_idx); + if (!app_wrk) + { + quic_disconnect_transport (ctx); + return -1; + } + + app_session = session_alloc (ctx->c_thread_index); + QUIC_DBG (1, "Created app_session, id %u", app_session->session_index); + ctx->c_s_index = app_session->session_index; + app_session->app_wrk_index = ctx->c_quic_ctx_id.parent_app_wrk_idx; + app_session->connection_index = ctx->c_c_index; + app_session->session_type = + session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, + ctx->c_quic_ctx_id.udp_is_ip4); + + if (app_worker_init_connected (app_wrk, app_session)) // TODO dont allocate fifos + { + quic_disconnect (ctx->c_c_index, vlib_get_thread_index ()); + return app_worker_connect_notify (app_wrk, NULL, ctx->client_opaque); + } + + app_session->session_state = SESSION_STATE_CONNECTING; + if (app_worker_connect_notify (app_wrk, app_session, ctx->client_opaque)) + { + QUIC_DBG (1, "failed to notify app"); + quic_disconnect (ctx->c_c_index, vlib_get_thread_index ()); + return -1; + } + + ctx->c_quic_ctx_id.app_session = session_handle (app_session); + app_session->session_state = SESSION_STATE_LISTENING; + session_lookup_add_connection (&ctx->connection, + session_handle (app_session)); + + return 0; +} + +int +quic_session_connected_callback (u32 quic_app_index, u32 ho_ctx_idx, + session_t * s, u8 is_fail) +{ + QUIC_DBG (2, "Called quic_session_connected_callback"); + // This should always be called before quic_connect returns since UDP always + // connects instantly. + struct sockaddr_in6 sa6; + struct sockaddr *sa = (struct sockaddr *) &sa6; + socklen_t salen; + transport_connection_t *tc; + quic_ctx_t *ho_ctx, *ctx; + u32 ctx_index; + int ret; + application_t *app; + app_worker_t *app_wrk; + + ho_ctx = quic_ctx_half_open_get (ho_ctx_idx); + if (is_fail) + { + int (*cb_fn) (u32, u32, session_t *, u8), rv = 0; + u32 wrk_index, api_context; + + wrk_index = ho_ctx->c_quic_ctx_id.parent_app_wrk_idx; + app_wrk = + app_worker_get_if_valid (ho_ctx->c_quic_ctx_id.parent_app_wrk_idx); + if (app_wrk) + { + api_context = ho_ctx->c_s_index; + app = application_get (app_wrk->app_index); + cb_fn = app->cb_fns.session_connected_callback; + rv = cb_fn (wrk_index, api_context, 0, 1 /* failed */ ); + } + quic_ctx_half_open_reader_unlock (); + quic_ctx_half_open_free (ho_ctx_idx); + return rv; + } + + app_wrk = + app_worker_get_if_valid (ho_ctx->c_quic_ctx_id.parent_app_wrk_idx); + if (!app_wrk) + { + QUIC_DBG (1, "Appwrk not found"); + return -1; + } + app = application_get (app_wrk->app_index); + + ctx_index = quic_ctx_alloc (); + ctx = quic_ctx_get (ctx_index); + clib_memcpy (ctx, ho_ctx, sizeof (*ctx)); + quic_ctx_half_open_reader_unlock (); // TODO: this is a race + quic_ctx_half_open_free (ho_ctx_idx); + + ctx->c_thread_index = vlib_get_thread_index (); + ctx->c_c_index = ctx_index; + + QUIC_DBG (1, "Quic connect for returned %u. New connection [%u]%x", + is_fail, vlib_get_thread_index (), (ctx) ? ctx_index : ~0); + + ctx->c_quic_ctx_id.quic_session = session_handle (s); + s->opaque = ctx_index; + s->session_state = SESSION_STATE_READY; + + // Init QUIC lib connection + // Generate required sockaddr & salen + tc = session_get_transport (s); + quic_build_sockaddr (sa, &salen, &tc->rmt_ip, tc->rmt_port, tc->is_ip4); + + ret = + quicly_connect (&ctx->c_quic_ctx_id.conn, + (quicly_context_t *) app->quicly_ctx, + (char *) ctx->srv_hostname, sa, salen, + &quic_main.next_cid, &quic_main.hs_properties, NULL); + ++quic_main.next_cid.master_id; + // Save context handle in quicly connection + *quicly_get_data (ctx->c_quic_ctx_id.conn) = (void *) (u64) ctx_index; + assert (ret == 0); + + if (quic_send_packets (ctx)) + { + quic_connection_closed (ctx_index); + } + return ret; +} + +void +quic_session_disconnect_callback (session_t * s) +{ + clib_warning ("UDP session disconnected???"); +} + +void +quic_session_reset_callback (session_t * s) +{ + clib_warning ("UDP session reset???"); +} + +static int +quic_add_segment_callback (u32 client_index, u64 seg_handle) +{ + QUIC_DBG (2, "Called quic_add_segment_callback"); + QUIC_DBG (2, "NOT IMPLEMENTED"); + /* No-op for builtin */ + return 0; +} + +static int +quic_del_segment_callback (u32 client_index, u64 seg_handle) +{ + QUIC_DBG (2, "Called quic_del_segment_callback"); + QUIC_DBG (2, "NOT IMPLEMENTED"); + /* No-op for builtin */ + return 0; +} + +int +quic_add_vpp_q_builtin_tx_evt (session_t * s) +{ + if (svm_fifo_set_event (s->tx_fifo)) + session_send_io_evt_to_thread_custom (s, s->thread_index, + FIFO_EVENT_BUILTIN_TX); + return 0; +} + +void +quic_open_stream_if_ready (quic_ctx_t * ctx) +{ + quicly_conn_t *conn = ctx->c_quic_ctx_id.conn; + if (ctx->stream) + { + QUIC_DBG (2, "----------- > FOUND Stream id %d", + ctx->stream->stream_id); + QUIC_DBG (2, "----------- > FOUND Stream is_open %d", + ctx->stream->sendstate.is_open); + return; + } + if (quicly_connection_is_ready (conn)) + assert (!quicly_open_stream (conn, &ctx->stream, 0)); + QUIC_DBG (2, "Stream id %d", ctx->stream->stream_id); + QUIC_DBG (2, "Stream is_open %d", ctx->stream->sendstate.is_open); +} + +int +quic_custom_tx_callback (void *session) +{ + QUIC_DBG (2, "Called quic_custom_tx_callback"); + session_t *app_session = (session_t *) session; + quic_ctx_t *ctx; + svm_fifo_t *f; + u32 deq_max; + u8 *data; + + if (PREDICT_FALSE + (app_session->session_state >= SESSION_STATE_TRANSPORT_CLOSING)) + return 0; + ctx = quic_ctx_get (app_session->connection_index); + quic_open_stream_if_ready (ctx); + if (!ctx->stream) + { + quic_add_vpp_q_builtin_tx_evt (app_session); + return 0; + } + + f = app_session->tx_fifo; + deq_max = svm_fifo_max_dequeue (f); + if (!deq_max) + return 0; + + data = svm_fifo_head (f); + if (quicly_streambuf_egress_write (ctx->stream, data, deq_max)) + { + assert (0); + return 0; + } + QUIC_DBG (2, "Sent %u bytes", deq_max); + svm_fifo_dequeue_drop (f, deq_max); + if (quic_send_packets (ctx)) + { + quic_connection_closed (ctx->c_c_index); + } + return 0; +} + +int +quic_find_packet_ctx (quic_ctx_t ** ctx, quicly_conn_t ** conn, + struct sockaddr *sa, socklen_t salen, + quicly_decoded_packet_t packet) +{ + quic_ctx_t *ctx_; + quicly_conn_t *conn_; + /* *INDENT-OFF* */ + pool_foreach (ctx_, quic_main.ctx_pool[vlib_get_thread_index()], + ({ + conn_ = ctx_->c_quic_ctx_id.conn; + if (conn_ && !ctx_->is_listener) + { + if (quicly_is_destination(conn_, sa, salen, &packet)) + { + *conn = conn_; + *ctx = ctx_; + QUIC_DBG (2, "connection_found"); + return 0; + } + } + })); + /* *INDENT-ON* */ + return 0; +} + +static int +quic_receive (quic_ctx_t * ctx, quicly_conn_t * conn, + quicly_decoded_packet_t packet) +{ + quicly_receive (conn, &packet); + // Conn may be set to null if the connection is terminated + if (ctx->c_quic_ctx_id.conn + && ctx->c_quic_ctx_id.conn_state == QUIC_CONN_STATE_HANDSHAKE) + { + if (quicly_connection_is_ready (conn)) + { + ctx->c_quic_ctx_id.conn_state = QUIC_CONN_STATE_READY; + if (quicly_is_client (conn)) + session_send_rpc_evt_to_thread_force (vlib_get_thread_index (), + &quic_delayed_notify_app_connected, + (void *) (u64) + ctx->c_c_index); + } + } + if (quic_send_packets (ctx)) + { + quic_connection_closed (ctx->c_c_index); + } + return 0; +} + +static int +quic_delayed_create_app_session (void *ctx_index) +{ + quic_ctx_t *lctx, *ctx; + session_t *app_session, *app_listen_session; + app_worker_t *app_wrk; + int rv; + + ctx = quic_ctx_get ((u32) (u64) ctx_index); + app_session = session_alloc (ctx->c_thread_index); + app_session->session_state = SESSION_STATE_LISTENING; + ctx->c_s_index = app_session->session_index; + + lctx = quic_ctx_get (ctx->c_quic_ctx_id.listener_ctx_id); + + app_listen_session = + listen_session_get_from_handle (lctx->c_quic_ctx_id.app_session); + app_session->app_wrk_index = lctx->c_quic_ctx_id.parent_app_wrk_idx; + app_session->connection_index = ctx->c_c_index; + app_session->session_type = app_listen_session->session_type; + app_session->listener_index = app_listen_session->session_index; + app_session->app_index = quic_main.app_index; + + // TODO: don't alloc fifos when we don't transfer data on this session + if ((rv = app_worker_init_accepted (app_session))) + { + QUIC_DBG (1, "failed to allocate fifos"); + session_free (app_session); + return rv; + } + ctx->c_quic_ctx_id.app_session = session_handle (app_session); + ctx->c_quic_ctx_id.parent_app_id = lctx->c_quic_ctx_id.parent_app_id; + ctx->c_quic_ctx_id.udp_is_ip4 = lctx->c_quic_ctx_id.udp_is_ip4; + ctx->c_quic_ctx_id.parent_app_wrk_idx = app_session->app_wrk_index; + session_lookup_add_connection (&ctx->connection, + session_handle (app_session)); + app_wrk = app_worker_get (app_session->app_wrk_index); + rv = app_worker_accept_notify (app_wrk, app_session); + if (rv) + { + QUIC_DBG (1, "failed to notify accept worker app"); + return rv; + } + return 0; +} + +static int +quic_create_connection (quicly_context_t * quicly_ctx, + u64 quic_session_handle, u32 lctx_index, + quicly_conn_t * conn, struct sockaddr *sa, + socklen_t salen, quicly_decoded_packet_t packet) +{ + quic_ctx_t *ctx; + u32 ctx_index; + + /* new connection, accept and create context if packet is valid */ + // TODO: check if socket is actually listening? + QUIC_DBG (2, "New connection created"); + if (quicly_accept (&conn, quicly_ctx, sa, salen, + &packet, ptls_iovec_init (NULL, 0), + &quic_main.next_cid, NULL) != 0) + { + // Invalid packet, pass + assert (conn == NULL); + QUIC_DBG (2, "Accept failed"); + return 0; + } + assert (conn != NULL); + + ++quic_main.next_cid.master_id; + // Create context + ctx_index = quic_ctx_alloc (); + ctx = quic_ctx_get (ctx_index); + // Save ctx handle in quicly connection + *quicly_get_data (conn) = (void *) (u64) ctx_index; + + ctx->c_thread_index = vlib_get_thread_index (); + ctx->c_c_index = ctx_index; + ctx->c_quic_ctx_id.quic_session = quic_session_handle; + ctx->c_quic_ctx_id.listener_ctx_id = lctx_index; + ctx->c_quic_ctx_id.timer_handle = QUIC_TIMER_HANDLE_INVALID; + ctx->c_quic_ctx_id.conn = conn; + + session_send_rpc_evt_to_thread_force (vlib_get_thread_index (), + &quic_delayed_create_app_session, + (void *) (u64) ctx_index); + if (quic_send_packets (ctx)) + { + quic_connection_closed (ctx_index); + } + return 0; +} + +static int +quic_reset_connection (quicly_context_t * quicly_ctx, u64 quic_session_handle, + struct sockaddr *sa, socklen_t salen, + quicly_decoded_packet_t packet) +{ + /* short header packet; potentially a dead connection. No need to check the length of the incoming packet, + * because loop is prevented by authenticating the CID (by checking node_id and thread_id). If the peer is also + * sending a reset, then the next CID is highly likely to contain a non-authenticating CID, ... */ + QUIC_DBG (2, "Sending stateless reset"); + quicly_datagram_t *dgram; + session_t *quic_session; + if (packet.cid.dest.plaintext.node_id == 0 + && packet.cid.dest.plaintext.thread_id == 0) + { + dgram = quicly_send_stateless_reset (quicly_ctx, sa, salen, + &packet.cid.dest.plaintext); + quic_session = session_get_from_handle (quic_session_handle); + if (quic_send_datagram (quic_session, dgram)) // TODO : missing event on fifo + QUIC_DBG (2, "Send reset failed"); + } + return 0; +} + +int +quic_app_rx_callback (session_t * quic_session) +{ + // Read data from UDP rx_fifo and pass it to the quicly conn. + QUIC_DBG (2, "Called quic_app_rx_callback"); + + quicly_decoded_packet_t packet; + session_dgram_hdr_t ph; + application_t *app; + quicly_conn_t *conn = NULL; + quic_ctx_t *lctx, *ctx = NULL; + svm_fifo_t *f; + size_t plen; + struct sockaddr_in6 sa6; + struct sockaddr *sa = (struct sockaddr *) &sa6; + socklen_t salen; + u32 max_deq, len; + u8 *data; + u32 lctx_index = quic_session->opaque; + u64 quic_session_handle = session_handle (quic_session); + + f = quic_session->rx_fifo; + + do + { + conn = NULL; + max_deq = svm_fifo_max_dequeue (f); + if (max_deq < sizeof (session_dgram_hdr_t)) + { + svm_fifo_unset_event (f); + return 0; + } + QUIC_DBG (2, "Processing one packet at %ld", quic_get_time (NULL)); + + svm_fifo_unset_event (f); + svm_fifo_peek (f, 0, sizeof (ph), (u8 *) & ph); + ASSERT (ph.data_length >= ph.data_offset); + len = ph.data_length - ph.data_offset; + + quic_build_sockaddr (sa, &salen, &ph.rmt_ip, ph.rmt_port, ph.is_ip4); + + // Quicly can read len bytes from the fifo at offset: + // ph.data_offset + SESSION_CONN_HDR_LEN + data = svm_fifo_head (f) + ph.data_offset + SESSION_CONN_HDR_LEN; + + lctx = quic_ctx_get (lctx_index); + app = application_get (lctx->c_quic_ctx_id.parent_app_id); + + plen = + quicly_decode_packet ((quicly_context_t *) app->quicly_ctx, &packet, + data, len); + if (plen != SIZE_MAX) + { + quic_find_packet_ctx (&ctx, &conn, sa, salen, packet); + if (conn != NULL) + quic_receive (ctx, conn, packet); + else if (QUICLY_PACKET_IS_LONG_HEADER (packet.octets.base[0])) + quic_create_connection ((quicly_context_t *) app->quicly_ctx, + quic_session_handle, lctx_index, conn, + sa, salen, packet); + else if (((quicly_context_t *) app->quicly_ctx)->encrypt_cid) + quic_reset_connection ((quicly_context_t *) app->quicly_ctx, + quic_session_handle, sa, salen, packet); + } + svm_fifo_dequeue_drop (f, + ph.data_length + ph.data_offset + + SESSION_CONN_HDR_LEN); + } + while (1); + return 0; +} + +/***************************************************************************** + * END TRANSPORT PROTO FUNCTIONS +*****************************************************************************/ + +/* *INDENT-OFF* */ +static session_cb_vft_t quic_app_cb_vft = { + .session_accept_callback = NULL, + .session_disconnect_callback = quic_session_disconnect_callback, + .session_connected_callback = quic_session_connected_callback, + .session_reset_callback = quic_session_reset_callback, + .add_segment_callback = quic_add_segment_callback, + .del_segment_callback = quic_del_segment_callback, + .builtin_app_rx_callback = quic_app_rx_callback, +}; + +const static transport_proto_vft_t quic_proto = { + .connect = quic_connect, + .close = quic_disconnect, + .start_listen = quic_start_listen, + .stop_listen = quic_stop_listen, + .get_connection = quic_connection_get, + .get_listener = quic_listener_get, + .update_time = quic_update_time, + .custom_tx = quic_custom_tx_callback, + .tx_type = TRANSPORT_TX_INTERNAL, + .service_type = TRANSPORT_SERVICE_APP, + .format_connection = format_quic_connection, + .format_half_open = format_quic_half_open, + .format_listener = format_quic_listener, +}; +/* *INDENT-ON* */ + +static clib_error_t * +quic_init (vlib_main_t * vm) +{ + QUIC_DBG (2, "Called quic_init"); + vlib_thread_main_t *vtm = vlib_get_thread_main (); + vnet_app_attach_args_t _a, *a = &_a; + u64 options[APP_OPTIONS_N_OPTIONS]; + u32 segment_size = 512 << 20; + quic_main_t *qm = &quic_main; + u32 fifo_size = 64 << 10; + u32 num_threads; + + num_threads = 1 /* main thread */ + vtm->n_threads; + + memset (a, 0, sizeof (*a)); + memset (options, 0, sizeof (options)); + + a->session_cb_vft = &quic_app_cb_vft; + a->api_client_index = APP_INVALID_INDEX; + a->options = options; + a->name = format (0, "quic"); + a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size; + a->options[APP_OPTIONS_RX_FIFO_SIZE] = fifo_size; + a->options[APP_OPTIONS_TX_FIFO_SIZE] = fifo_size; + a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_IS_BUILTIN; + a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; + a->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_IS_TRANSPORT_APP; + + if (vnet_application_attach (a)) + { + clib_warning ("failed to attach quic app"); + return clib_error_return (0, "failed to attach quic app"); + } + + vec_validate (qm->ctx_pool, num_threads - 1); + vec_validate (qm->wrk_ctx, num_threads - 1); + // Timers, one per thread. + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + /* *INDENT-OFF* */ + foreach_vlib_main (({ + tw = &qm->wrk_ctx[ii].timer_wheel; + tw_timer_wheel_init_1t_3w_1024sl_ov (tw, quic_expired_timers_dispatch, + 10e-3 /* timer period 1ms */ , ~0); + tw->last_run_time = vlib_time_now (this_vlib_main); + })); + /* *INDENT-ON* */ + + if (!qm->ca_cert_path) + qm->ca_cert_path = QUIC_DEFAULT_CA_CERT_PATH; + + qm->app_index = a->app_index; + clib_rwlock_init (&qm->half_open_rwlock); + qm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock + / QUIC_TSTAMP_RESOLUTION; + + transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto, + FIB_PROTOCOL_IP4, ~0); + transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto, + FIB_PROTOCOL_IP6, ~0); + + vec_free (a->name); + return 0; +} + +quic_main_t * +vnet_quic_get_main (void) +{ + return &quic_main; +} + +VLIB_INIT_FUNCTION (quic_init); + +/* *INDENT-OFF* */ +VLIB_PLUGIN_REGISTER () = +{ + .version = VPP_BUILD_VER, + .description = "Quic transport protocol", +}; +/* *INDENT-ON* */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/plugins/quic/quic.h b/src/plugins/quic/quic.h new file mode 100644 index 00000000000..f574b29a583 --- /dev/null +++ b/src/plugins/quic/quic.h @@ -0,0 +1,118 @@ +/* + * Copyright (c) 2019 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef __included_quic_h__ +#define __included_quic_h__ + +#include <vnet/session/application_interface.h> + +#include <vppinfra/lock.h> +#include <vppinfra/tw_timer_1t_3w_1024sl_ov.h> + +#include <quicly.h> + +#define QUIC_DEBUG 4 +#define QUIC_DEBUG_LEVEL_CLIENT 0 +#define QUIC_DEBUG_LEVEL_SERVER 0 + +#define QUIC_DEFAULT_CA_CERT_PATH "/etc/ssl/certs/ca-certificates.crt" + +#define QUIC_TIMER_HANDLE_INVALID ((u32) ~0) + +#define QUIC_TSTAMP_RESOLUTION 0.001 /* QUIC tick resolution (1ms) */ + + +#if QUIC_DEBUG +#define QUIC_DBG(_lvl, _fmt, _args...) \ + if (_lvl <= QUIC_DEBUG) \ + clib_warning (_fmt, ##_args) +#else +#define QUIC_DBG(_lvl, _fmt, _args...) +#endif + +#define QUIC_CONN_STATE_HANDSHAKE 0 +#define QUIC_CONN_STATE_READY 1 + + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct quic_ctx_id_ +{ + session_handle_t app_session; + session_handle_t quic_session; + u32 parent_app_wrk_idx; + u32 parent_app_id; + u32 listener_ctx_id; + u32 timer_handle; + quicly_conn_t *conn; + u8 udp_is_ip4; + u8 conn_state; +}) quic_ctx_id_t; +/* *INDENT-ON* */ + +STATIC_ASSERT (sizeof (quic_ctx_id_t) <= 42, "ctx id must be less than 42"); + +typedef struct quic_ctx_ +{ + union + { + transport_connection_t connection; + quic_ctx_id_t c_quic_ctx_id; + }; + + quicly_stream_t *stream; + u8 *srv_hostname; + u32 client_opaque; + u8 is_listener; +} quic_ctx_t; + +typedef struct quic_worker_ctx_ +{ + CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); + u32 time_now; /**< worker time */ + tw_timer_wheel_1t_3w_1024sl_ov_t timer_wheel; /**< worker timer wheel */ + u32 *tx_buffers; /**< tx buffer free list */ +} quic_worker_ctx_t; + +typedef struct quic_main_ +{ + u32 app_index; + quic_ctx_t *half_open_ctx_pool; + quic_ctx_t **ctx_pool; + clib_rwlock_t half_open_rwlock; + quic_worker_ctx_t *wrk_ctx; + f64 tstamp_ticks_per_clock; + + + /* + * Config + */ + quicly_context_t quicly_ctx; + ptls_handshake_properties_t hs_properties; + quicly_cid_plaintext_t next_cid; + u8 use_test_cert_in_ca; + char *ca_cert_path; +} quic_main_t; + +quic_main_t *vnet_quic_get_main (void); + +#endif /* __included_quic_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |