X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fplugins%2Fquic%2Fquic.c;h=866aaadb6a885923c44b445f47021cc1c7d3000f;hb=baf1c7ccc10134ee38d75532d7bef7d9f3fabfc9;hp=5ff962d8102a9885a12d17cfeab042bcd9261277;hpb=09d18c2fee0eb96c486f9d112e39dcd34e430b0e;p=vpp.git diff --git a/src/plugins/quic/quic.c b/src/plugins/quic/quic.c index 5ff962d8102..866aaadb6a8 100644 --- a/src/plugins/quic/quic.c +++ b/src/plugins/quic/quic.c @@ -20,31 +20,23 @@ #include #include #include -#include #include #include +#include +#include +#include -#include -#include -#include +#include -static quic_main_t quic_main; +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); -static int quic_connect_new_stream (session_endpoint_cfg_t * sep); -static int quic_connect_new_connection (session_endpoint_cfg_t * sep); - -#define QUIC_INT_MAX 0x3FFFFFFFFFFFFFFF static u32 -quic_ctx_alloc () +quic_ctx_alloc (u32 thread_index) { - u8 thread_index = vlib_get_thread_index (); quic_main_t *qm = &quic_main; quic_ctx_t *ctx; @@ -52,6 +44,8 @@ quic_ctx_alloc () memset (ctx, 0, sizeof (quic_ctx_t)); ctx->c_thread_index = thread_index; + QUIC_DBG (3, "Allocated quic_ctx %u on thread %u", + ctx - qm->ctx_pool[thread_index], thread_index); return ctx - qm->ctx_pool[thread_index]; } @@ -66,63 +60,244 @@ quic_ctx_free (quic_ctx_t * ctx) } static quic_ctx_t * -quic_ctx_get (u32 ctx_index) +quic_ctx_get (u32 ctx_index, u32 thread_index) { - return pool_elt_at_index (quic_main.ctx_pool[vlib_get_thread_index ()], - ctx_index); + return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index); } static quic_ctx_t * -quic_ctx_get_w_thread (u32 ctx_index, u8 thread_index) +quic_ctx_get_if_valid (u32 ctx_index, u32 thread_index) { + if (pool_is_free_index (quic_main.ctx_pool[thread_index], ctx_index)) + return 0; return pool_elt_at_index (quic_main.ctx_pool[thread_index], ctx_index); } +static quic_ctx_t * +quic_get_conn_ctx (quicly_conn_t * conn) +{ + u64 conn_data; + conn_data = (u64) * quicly_get_data (conn); + return quic_ctx_get (conn_data & UINT32_MAX, conn_data >> 32); +} + +static void +quic_store_conn_ctx (quicly_conn_t * conn, quic_ctx_t * ctx) +{ + *quicly_get_data (conn) = + (void *) (((u64) ctx->c_thread_index) << 32 | (u64) ctx->c_c_index); +} + +static inline int +quic_ctx_is_stream (quic_ctx_t * ctx) +{ + return (ctx->flags & QUIC_F_IS_STREAM); +} + +static inline int +quic_ctx_is_listener (quic_ctx_t * ctx) +{ + return (ctx->flags & QUIC_F_IS_LISTENER); +} + +static session_t * +get_stream_session_from_stream (quicly_stream_t * stream) +{ + quic_ctx_t *ctx; + quic_stream_data_t *stream_data; + + stream_data = (quic_stream_data_t *) stream->data; + ctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index); + return session_get (ctx->c_s_index, stream_data->thread_index); +} + +static inline void +quic_make_connection_key (clib_bihash_kv_16_8_t * kv, + const quicly_cid_plaintext_t * id) +{ + kv->key[0] = ((u64) id->master_id) << 32 | (u64) id->thread_id; + kv->key[1] = id->node_id; +} + +static int +quic_sendable_packet_count (session_t * udp_session) +{ + u32 max_enqueue; + u32 packet_size = QUIC_MAX_PACKET_SIZE + SESSION_CONN_HDR_LEN; + max_enqueue = svm_fifo_max_enqueue (udp_session->tx_fifo); + return clib_min (max_enqueue / packet_size, QUIC_SEND_PACKET_VEC_SIZE); +} + +static quicly_context_t * +quic_get_quicly_ctx_from_ctx (quic_ctx_t * ctx) +{ + app_worker_t *app_wrk; + application_t *app; + app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id); + if (!app_wrk) + return 0; + app = application_get (app_wrk->app_index); + return (quicly_context_t *) app->quicly_ctx; +} + +static quicly_context_t * +quic_get_quicly_ctx_from_udp (u64 udp_session_handle) +{ + session_t *udp_session; + application_t *app; + udp_session = session_get_from_handle (udp_session_handle); + app = application_get (udp_session->opaque); + return (quicly_context_t *) app->quicly_ctx; +} + +static void +quic_ack_rx_data (session_t * stream_session) +{ + u32 max_deq; + quic_ctx_t *sctx; + svm_fifo_t *f; + quicly_stream_t *stream; + quic_stream_data_t *stream_data; + + sctx = + quic_ctx_get (stream_session->connection_index, + stream_session->thread_index); + ASSERT (quic_ctx_is_stream (sctx)); + stream = sctx->stream; + stream_data = (quic_stream_data_t *) stream->data; + + f = stream_session->rx_fifo; + max_deq = svm_fifo_max_dequeue (f); + + ASSERT (stream_data->app_rx_data_len >= max_deq); + quicly_stream_sync_recvbuf (stream, stream_data->app_rx_data_len - max_deq); + QUIC_DBG (3, "Acking %u bytes", stream_data->app_rx_data_len - max_deq); + stream_data->app_rx_data_len = max_deq; +} + static void quic_disconnect_transport (quic_ctx_t * ctx) { - QUIC_DBG (2, "Called quic_disconnect_transport"); + QUIC_DBG (2, "Disconnecting transport 0x%lx", ctx->udp_session_handle); vnet_disconnect_args_t a = { - .handle = ctx->c_quic_ctx_id.udp_session_handle, + .handle = ctx->udp_session_handle, .app_index = quic_main.app_index, }; if (vnet_disconnect_session (&a)) - clib_warning ("UDP session disconnect errored"); + clib_warning ("UDP session 0x%lx disconnect errored", + ctx->udp_session_handle); +} + +static void +quic_connection_delete (quic_ctx_t * ctx) +{ + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + clib_bihash_kv_16_8_t kv; + quicly_conn_t *conn; + + QUIC_DBG (2, "Deleting connection %u", ctx->c_c_index); + + ASSERT (!quic_ctx_is_stream (ctx)); + + /* Stop the timer */ + if (ctx->timer_handle != QUIC_TIMER_HANDLE_INVALID) + { + tw = &quic_main.wrk_ctx[ctx->c_thread_index].timer_wheel; + tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle); + } + + /* Delete the connection from the connection map */ + conn = ctx->conn; + quic_make_connection_key (&kv, quicly_get_master_id (conn)); + QUIC_DBG (2, "Deleting conn with id %lu %lu from map", kv.key[0], + kv.key[1]); + clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 0 /* is_add */ ); + + quic_disconnect_transport (ctx); + + if (ctx->conn) + quicly_free (ctx->conn); + ctx->conn = NULL; + + session_transport_delete_notify (&ctx->connection); + quic_ctx_free (ctx); +} + +/** + * Called when quicly return an error + * This function interacts tightly with quic_proto_on_close + */ +static void +quic_connection_closed (quic_ctx_t * ctx) +{ + QUIC_DBG (2, "QUIC connection %u/%u closed", ctx->c_thread_index, + ctx->c_c_index); + + /* TODO if connection is not established, just delete the session? */ + /* Actually should send connect or accept error */ + + switch (ctx->conn_state) + { + case QUIC_CONN_STATE_READY: + /* Error on an opened connection (timeout...) + This puts the session in closing state, we should receive a notification + when the app has closed its session */ + session_transport_reset_notify (&ctx->connection); + /* This ensures we delete the connection when the app confirms the close */ + ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED; + break; + case QUIC_CONN_STATE_PASSIVE_CLOSING: + ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED; + /* quic_proto_on_close will eventually be called when the app confirms the close + , we delete the connection at that point */ + break; + case QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED: + /* App already confirmed close, we can delete the connection */ + session_transport_delete_notify (&ctx->connection); + quic_connection_delete (ctx); + break; + case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED: + QUIC_DBG (0, "BUG"); + break; + case QUIC_CONN_STATE_ACTIVE_CLOSING: + session_transport_delete_notify (&ctx->connection); + quic_connection_delete (ctx); + break; + default: + QUIC_DBG (0, "BUG"); + break; + } } static int quic_send_datagram (session_t * udp_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; + u32 len, ret; svm_fifo_t *f; transport_connection_t *tc; len = packet->data.len; f = udp_session->tx_fifo; tc = session_get_transport (udp_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; + if (max_enqueue < SESSION_CONN_HDR_LEN + len) + { + QUIC_DBG (1, "Too much data to send, max_enqueue %u, len %u", + max_enqueue, len + SESSION_CONN_HDR_LEN); + return QUIC_ERROR_FULL_FIFO; + } - // Build packet header for fifo + /* 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 + /* Read dest address from quicly-provided sockaddr */ if (hdr.is_ip4) { ASSERT (packet->sa.sa_family == AF_INET); @@ -138,87 +313,153 @@ quic_send_datagram (session_t * udp_session, quicly_datagram_t * packet) 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; + ret = svm_fifo_enqueue (f, sizeof (hdr), (u8 *) & hdr); + if (ret != sizeof (hdr)) + { + QUIC_DBG (1, "Not enough space to enqueue header"); + return QUIC_ERROR_FULL_FIFO; + } + ret = svm_fifo_enqueue (f, len, packet->data.base); + if (ret != len) + { + QUIC_DBG (1, "Not enough space to enqueue payload"); + return QUIC_ERROR_FULL_FIFO; + } return 0; } static int quic_send_packets (quic_ctx_t * ctx) { - //QUIC_DBG (2, "Called quic_send_packets"); - quicly_datagram_t *packets[16]; + quicly_datagram_t *packets[QUIC_SEND_PACKET_VEC_SIZE]; session_t *udp_session; quicly_conn_t *conn; - size_t num_packets, i; - int ret; + size_t num_packets, i, max_packets; + quicly_packet_allocator_t *pa; + quicly_context_t *quicly_context; + int err = 0; - if (ctx->c_quic_ctx_id.is_stream) - { - // We have sctx, get qctx - ctx = quic_ctx_get (ctx->c_quic_ctx_id.quic_connection_ctx_id); - } + /* We have sctx, get qctx */ + if (quic_ctx_is_stream (ctx)) + ctx = quic_ctx_get (ctx->quic_connection_ctx_id, ctx->c_thread_index); + + ASSERT (!quic_ctx_is_stream (ctx)); - ASSERT (!ctx->c_quic_ctx_id.is_stream); + udp_session = session_get_from_handle_if_valid (ctx->udp_session_handle); + if (!udp_session) + goto quicly_error; - udp_session = - session_get_from_handle (ctx->c_quic_ctx_id.udp_session_handle); - conn = ctx->c_quic_ctx_id.conn; + conn = ctx->conn; if (!conn) return 0; + /* TODO : quicly can assert it can send min_packets up to 2 */ + if (quic_sendable_packet_count (udp_session) < 2) + goto stop_sending; + + quicly_context = quic_get_quicly_ctx_from_ctx (ctx); + if (!quicly_context) + { + clib_warning ("Tried to send packets on non existing app worker %u", + ctx->parent_app_wrk_id); + quic_connection_delete (ctx); + return 1; + } + pa = quicly_context->packet_allocator; 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 (udp_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 + max_packets = quic_sendable_packet_count (udp_session); + if (max_packets < 2) + break; + num_packets = max_packets; + if ((err = quicly_send (conn, packets, &num_packets))) + goto quicly_error; + + for (i = 0; i != num_packets; ++i) { - QUIC_DBG (2, "quicly_send returned %d, closing connection\n", ret); - return ret; + if ((err = quic_send_datagram (udp_session, packets[i]))) + goto quicly_error; + + pa->free_packet (pa, packets[i]); } } - while (ret == 0 && num_packets == sizeof (packets) / sizeof (packets[0])); + while (num_packets > 0 && num_packets == max_packets); stop_sending: if (svm_fifo_set_event (udp_session->tx_fifo)) - session_send_io_evt_to_thread (udp_session->tx_fifo, FIFO_EVENT_APP_TX); + if ((err = + session_send_io_evt_to_thread (udp_session->tx_fifo, + SESSION_IO_EVT_TX))) + clib_warning ("Event enqueue errored %d", err); + QUIC_DBG (3, "%u[TX] %u[RX]", svm_fifo_max_dequeue (udp_session->tx_fifo), + svm_fifo_max_dequeue (udp_session->rx_fifo)); quic_update_timer (ctx); return 0; + +quicly_error: + if (err && err != QUICLY_ERROR_PACKET_IGNORED + && err != QUICLY_ERROR_FREE_CONNECTION) + clib_warning ("Quic error '%U'.", quic_format_err, err); + quic_connection_closed (ctx); + return 1; } /***************************************************************************** + * * START QUICLY CALLBACKS * Called from QUIC lib + * *****************************************************************************/ +static void +quic_on_stream_destroy (quicly_stream_t * stream, int err) +{ + quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data; + quic_ctx_t *sctx = + quic_ctx_get (stream_data->ctx_id, stream_data->thread_index); + session_t *stream_session = + session_get (sctx->c_s_index, sctx->c_thread_index); + QUIC_DBG (2, "DESTROYED_STREAM: session 0x%lx (%U)", + session_handle (stream_session), quic_format_err, err); + + stream_session->session_state = SESSION_STATE_CLOSED; + session_transport_delete_notify (&sctx->connection); + + quic_ctx_free (sctx); + free (stream->data); +} + static int -quic_on_stop_sending (quicly_stream_t * stream, int error_code) +quic_on_stop_sending (quicly_stream_t * stream, int err) { - QUIC_DBG (2, "received STOP_SENDING: %d", error_code); +#if QUIC_DEBUG >= 2 + quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data; + quic_ctx_t *sctx = + quic_ctx_get (stream_data->ctx_id, stream_data->thread_index); + session_t *stream_session = + session_get (sctx->c_s_index, sctx->c_thread_index); + clib_warning ("(NOT IMPLEMENTD) STOP_SENDING: session 0x%lx (%U)", + session_handle (stream_session), quic_format_err, err); +#endif + /* TODO : handle STOP_SENDING */ return 0; } static int -quic_on_receive_reset (quicly_stream_t * stream, int error_code) +quic_on_receive_reset (quicly_stream_t * stream, int err) { - QUIC_DBG (2, "received RESET_STREAM: %d", error_code); + quic_stream_data_t *stream_data = (quic_stream_data_t *) stream->data; + quic_ctx_t *sctx = + quic_ctx_get (stream_data->ctx_id, stream_data->thread_index); +#if QUIC_DEBUG >= 2 + session_t *stream_session = + session_get (sctx->c_s_index, sctx->c_thread_index); + clib_warning ("RESET_STREAM: session 0x%lx (%U)", + session_handle (stream_session), quic_format_err, err); +#endif + session_transport_closing_notify (&sctx->connection); return 0; } @@ -226,36 +467,114 @@ 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_DBG (3, "received data: %lu bytes, offset %lu", len, off); + u32 max_enq; quic_ctx_t *sctx; session_t *stream_session; - svm_fifo_t *rx_fifo; app_worker_t *app_wrk; + svm_fifo_t *f; + quic_stream_data_t *stream_data; + int rlen; + + stream_data = (quic_stream_data_t *) stream->data; + sctx = quic_ctx_get (stream_data->ctx_id, stream_data->thread_index); + stream_session = session_get (sctx->c_s_index, stream_data->thread_index); + f = stream_session->rx_fifo; + + max_enq = svm_fifo_max_enqueue_prod (f); + QUIC_DBG (3, "Enqueuing %u at off %u in %u space", len, off, max_enq); + if (off - stream_data->app_rx_data_len + len > max_enq) + { + QUIC_DBG (1, "Error RX fifo is full"); + return 1; + } + if (off == stream_data->app_rx_data_len) + { + /* Streams live on the same thread so (f, stream_data) should stay consistent */ + rlen = svm_fifo_enqueue (f, len, (u8 *) src); + stream_data->app_rx_data_len += rlen; + ASSERT (rlen >= len); + app_wrk = app_worker_get_if_valid (stream_session->app_wrk_index); + if (PREDICT_TRUE (app_wrk != 0)) + app_worker_lock_and_send_event (app_wrk, stream_session, + SESSION_IO_EVT_RX); + quic_ack_rx_data (stream_session); + } + else + { + rlen = + svm_fifo_enqueue_with_offset (f, off - stream_data->app_rx_data_len, + len, (u8 *) src); + ASSERT (rlen == 0); + } + return 0; +} + +void +quic_fifo_egress_shift (quicly_stream_t * stream, size_t delta) +{ + session_t *stream_session; + svm_fifo_t *f; + int rv; + + stream_session = get_stream_session_from_stream (stream); + f = stream_session->tx_fifo; + + rv = svm_fifo_dequeue_drop (f, delta); + ASSERT (rv == delta); + quicly_stream_sync_sendbuf (stream, 0); +} + +int +quic_fifo_egress_emit (quicly_stream_t * stream, size_t off, void *dst, + size_t * len, int *wrote_all) +{ + session_t *stream_session; + svm_fifo_t *f; + u32 deq_max, first_deq, max_rd_chunk, rem_offset; + + stream_session = get_stream_session_from_stream (stream); + f = stream_session->tx_fifo; + + QUIC_DBG (3, "Emitting %u, offset %u", *len, off); + + deq_max = svm_fifo_max_dequeue_cons (f); + ASSERT (off <= deq_max); + if (off + *len < deq_max) + { + *wrote_all = 0; + } + else + { + *wrote_all = 1; + *len = deq_max - off; + QUIC_DBG (3, "Wrote ALL, %u", *len); + } + + /* TODO, use something like : return svm_fifo_peek (f, off, *len, dst); */ + max_rd_chunk = svm_fifo_max_read_chunk (f); + + first_deq = 0; + if (off < max_rd_chunk) + { + first_deq = clib_min (*len, max_rd_chunk - off); + clib_memcpy_fast (dst, svm_fifo_head (f) + off, first_deq); + } + + if (max_rd_chunk < off + *len) + { + rem_offset = max_rd_chunk < off ? off - max_rd_chunk : 0; + clib_memcpy_fast (dst + first_deq, f->head_chunk->data + rem_offset, + *len - first_deq); + } - ctx_id = ((quic_stream_data_t *) stream->data)->ctx_id; - sctx = quic_ctx_get (ctx_id); - stream_session = session_get (sctx->c_s_index, vlib_get_thread_index ()); - rx_fifo = stream_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 (stream_session->app_wrk_index); - if (PREDICT_TRUE (app_wrk != 0)) - app_worker_lock_and_send_event (app_wrk, stream_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_destroy = quic_on_stream_destroy, + .on_send_shift = quic_fifo_egress_shift, + .on_send_emit = quic_fifo_egress_emit, .on_send_stop = quic_on_stop_sending, .on_receive = quic_on_receive, .on_receive_reset = quic_on_receive_reset @@ -269,79 +588,69 @@ quic_accept_stream (void *s) quic_stream_data_t *stream_data; app_worker_t *app_wrk; quic_ctx_t *qctx, *sctx; - u32 qctx_id, sctx_id; + u32 sctx_id; int rv; - sctx_id = quic_ctx_alloc (); + sctx_id = quic_ctx_alloc (vlib_get_thread_index ()); - qctx_id = (u64) * quicly_get_data (stream->conn); - qctx = quic_ctx_get (qctx_id); + qctx = quic_get_conn_ctx (stream->conn); stream_session = session_alloc (qctx->c_thread_index); - QUIC_DBG (1, "Created stream_session, id %u ctx %u", - stream_session->session_index, sctx_id); - - sctx = quic_ctx_get (sctx_id); - sctx->c_quic_ctx_id.parent_app_wrk_id = - qctx->c_quic_ctx_id.parent_app_wrk_id; - sctx->c_quic_ctx_id.parent_app_id = qctx->c_quic_ctx_id.parent_app_id; - sctx->c_quic_ctx_id.quic_connection_ctx_id = qctx->c_c_index; + QUIC_DBG (2, "ACCEPTED stream_session 0x%lx ctx %u", + session_handle (stream_session), sctx_id); + sctx = quic_ctx_get (sctx_id, qctx->c_thread_index); + sctx->parent_app_wrk_id = qctx->parent_app_wrk_id; + sctx->parent_app_id = qctx->parent_app_id; + sctx->quic_connection_ctx_id = qctx->c_c_index; sctx->c_c_index = sctx_id; - sctx->c_quic_ctx_id.is_stream = 1; sctx->c_s_index = stream_session->session_index; - sctx->c_quic_ctx_id.stream = stream; - sctx->c_quic_ctx_id.stream_session_handle = session_handle (stream_session); + sctx->stream = stream; + sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; + sctx->flags |= QUIC_F_IS_STREAM; - quic_session = - session_get_from_handle (qctx->c_quic_ctx_id.quic_session_handle); stream_data = (quic_stream_data_t *) stream->data; stream_data->ctx_id = sctx_id; + stream_data->thread_index = sctx->c_thread_index; + stream_data->app_rx_data_len = 0; sctx->c_s_index = stream_session->session_index; stream_session->session_state = SESSION_STATE_CREATED; - stream_session->app_wrk_index = sctx->c_quic_ctx_id.parent_app_wrk_id; + stream_session->app_wrk_index = sctx->parent_app_wrk_id; stream_session->connection_index = sctx->c_c_index; stream_session->session_type = - session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, - qctx->c_quic_ctx_id.udp_is_ip4); - stream_session->opaque = QUIC_SESSION_TYPE_STREAM; - stream_session->listener_index = quic_session->session_index; - stream_session->app_index = sctx->c_quic_ctx_id.parent_app_id; + session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4); + quic_session = session_get (qctx->c_s_index, qctx->c_thread_index); + stream_session->listener_handle = listen_session_get_handle (quic_session); app_wrk = app_worker_get (stream_session->app_wrk_index); if ((rv = app_worker_init_connected (app_wrk, stream_session))) { QUIC_DBG (1, "failed to allocate fifos"); session_free (stream_session); - quicly_reset_stream (stream, 0x30001); + quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR); return; } + svm_fifo_add_want_deq_ntf (stream_session->rx_fifo, + SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL | + SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY); - rv = app_worker_accept_notify (app_wrk, stream_session); - if (rv) + if ((rv = app_worker_accept_notify (app_wrk, stream_session))) { QUIC_DBG (1, "failed to notify accept worker app"); session_free_w_fifos (stream_session); - quicly_reset_stream (stream, 0x30002); + quicly_reset_stream (stream, QUIC_APP_ACCEPT_NOTIFY_ERROR); return; } - session_lookup_add_connection (&sctx->connection, - session_handle (stream_session)); } static int -quic_on_stream_open (quicly_stream_open_cb * self, quicly_stream_t * stream) +quic_on_stream_open (quicly_stream_open_t * self, quicly_stream_t * stream) { QUIC_DBG (2, "on_stream_open called"); - int ret; - if ((ret = - quicly_streambuf_create (stream, sizeof (quic_stream_data_t))) != 0) - { - return ret; - } + stream->data = malloc (sizeof (quic_stream_data_t)); stream->callbacks = &quic_stream_callbacks; - // Notify accept on parent qsession, but only if this is not a locally - // initiated stream + /* Notify accept on parent qsession, but only if this is not a locally + * initiated stream */ if (!quicly_stream_is_self_initiated (stream)) { quic_accept_stream (stream); @@ -349,494 +658,298 @@ quic_on_stream_open (quicly_stream_open_cb * self, quicly_stream_t * stream) 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_on_closed_by_peer (quicly_closed_by_peer_t * 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_ctx_t *ctx = quic_ctx_get (ctx_index); + quic_ctx_t *ctx = quic_get_conn_ctx (conn); +#if QUIC_DEBUG >= 2 + session_t *quic_session = session_get (ctx->c_s_index, ctx->c_thread_index); + clib_warning ("Session 0x%lx closed by peer (%U) %.*s ", + session_handle (quic_session), quic_format_err, code, + reason_len, reason); +#endif + ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING; session_transport_closing_notify (&ctx->connection); } -static quicly_closed_by_peer_cb on_closed_by_peer = { &quic_on_conn_close }; +static quicly_stream_open_t on_stream_open = { &quic_on_stream_open }; +static quicly_closed_by_peer_t on_closed_by_peer = + { &quic_on_closed_by_peer }; /***************************************************************************** + * * 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; -}; +/***************************************************************************** + * + * BEGIN TIMERS HANDLING + * + *****************************************************************************/ -static int -encrypt_ticket_cb (ptls_encrypt_ticket_t * _self, ptls_t * tls, - int is_encrypt, ptls_buffer_t * dst, ptls_iovec_t src) +static int64_t +quic_get_thread_time (u8 thread_index) { - 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; + return quic_main.wrk_ctx[thread_index].time_now; } -/* *INDENT-OFF* */ -static struct st_util_session_cache_t sc = { - .super = { - .cb = encrypt_ticket_cb, - }, -}; - -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) +static int64_t +quic_get_time (quicly_now_t * self) { - int ret = strncmp (line, "-----", 5); - size_t text_index = 5; + u8 thread_index = vlib_get_thread_index (); + return quic_get_thread_time (thread_index); +} - 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; - } +static quicly_now_t quicly_vpp_now_cb = { quic_get_time }; - if (ret == 0) - { - ret = line[text_index] - ' '; - text_index++; - } +static u32 +quic_set_time_now (u32 thread_index) +{ + vlib_main_t *vlib_main = vlib_get_main (); + f64 time = vlib_time_now (vlib_main); + quic_main.wrk_ctx[thread_index].time_now = (int64_t) (time * 1000.f); + return quic_main.wrk_ctx[thread_index].time_now; +} - if (ret == 0) - { - size_t label_length = strlen (label); - ret = strncmp (line + text_index, label, label_length); - text_index += label_length; - } +/* Transport proto callback */ +static void +quic_update_time (f64 now, u8 thread_index) +{ + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; - if (ret == 0) - { - ret = strncmp (line + text_index, "-----", 5); - } + 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); +} - return ret; +static void +quic_timer_expired (u32 conn_index) +{ + quic_ctx_t *ctx; + QUIC_DBG (4, "Timer expired for conn %u at %ld", conn_index, + quic_get_time (NULL)); + ctx = quic_ctx_get (conn_index, vlib_get_thread_index ()); + ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; + quic_send_packets (ctx); } -static int -ptls_get_bio_pem_object (BIO * bio, const char *label, ptls_buffer_t * buf) +static void +quic_update_timer (quic_ctx_t * ctx) { - int ret = PTLS_ERROR_PEM_LABEL_NOT_FOUND; - char line[256]; - ptls_base64_decode_state_t state; + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + int64_t next_timeout, next_interval; + session_t *quic_session; - /* Get the label on a line by itself */ - while (BIO_gets (bio, line, 256)) + /* This timeout is in ms which is the unit of our timer */ + next_timeout = quicly_get_first_timeout (ctx->conn); + next_interval = next_timeout - quic_get_time (NULL); + + if (next_timeout == 0 || next_interval <= 0) { - if (ptls_compare_separator_line (line, "BEGIN", label) == 0) + if (ctx->c_s_index == QUIC_SESSION_INVALID) { - 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; + next_interval = 1; } else { - ret = ptls_base64_decode (line, &state, buf); + quic_session = session_get (ctx->c_s_index, ctx->c_thread_index); + if (svm_fifo_set_event (quic_session->tx_fifo)) + session_send_io_evt_to_thread_custom (quic_session, + quic_session->thread_index, + SESSION_IO_EVT_BUILTIN_TX); + return; } } - return ret; -} - -static 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; + tw = &quic_main.wrk_ctx[vlib_get_thread_index ()].timer_wheel; - *nb_objects = 0; + QUIC_DBG (4, "Timer set to %ld (int %ld) for ctx %u", next_timeout, + next_interval, ctx->c_c_index); - if (ret == 0) + if (ctx->timer_handle == QUIC_TIMER_HANDLE_INVALID) { - while (count < list_max) + if (next_timeout == INT64_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; - } + QUIC_DBG (4, "timer for ctx %u already stopped", ctx->c_c_index); + return; } + ctx->timer_handle = + tw_timer_start_1t_3w_1024sl_ov (tw, ctx->c_c_index, 0, next_interval); } - - if (ret == PTLS_ERROR_PEM_LABEL_NOT_FOUND && count > 0) + else { - ret = 0; + if (next_timeout == INT64_MAX) + { + tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle); + ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; + QUIC_DBG (4, "Stopping timer for ctx %u", ctx->c_c_index); + } + else + tw_timer_update_1t_3w_1024sl_ov (tw, ctx->timer_handle, + next_interval); } - - *nb_objects = count; - - return ret; + return; } -#define PTLS_MAX_CERTS_IN_CONTEXT 16 - -static int -ptls_load_bio_certificates (ptls_context_t * ctx, BIO * bio) +static void +quic_expired_timers_dispatch (u32 * expired_timers) { - int ret = 0; - - ctx->certificates.list = - (ptls_iovec_t *) malloc (PTLS_MAX_CERTS_IN_CONTEXT * - sizeof (ptls_iovec_t)); + int i; - if (ctx->certificates.list == NULL) - { - ret = PTLS_ERROR_NO_MEMORY; - } - else + for (i = 0; i < vec_len (expired_timers); i++) { - ret = - ptls_load_bio_pem_objects (bio, "CERTIFICATE", ctx->certificates.list, - PTLS_MAX_CERTS_IN_CONTEXT, - &ctx->certificates.count); + quic_timer_expired (expired_timers[i]); } - - 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); -} +/***************************************************************************** + * + * END TIMERS HANDLING + * + *****************************************************************************/ -static inline void -load_bio_private_key (ptls_context_t * ctx, const char *pk_data) +static int +quic_encrypt_ticket_cb (ptls_encrypt_ticket_t * _self, ptls_t * tls, + int is_encrypt, ptls_buffer_t * dst, ptls_iovec_t src) { - 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); + quic_session_cache_t *self = (void *) _self; + int ret; - if (pkey == NULL) + if (is_encrypt) { - fprintf (stderr, "failed to read private key from app configuration\n"); - exit (1); - } - ptls_openssl_init_sign_certificate (&sc, pkey); - EVP_PKEY_free (pkey); + /* 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; - ctx->sign_certificate = &sc.super; -} + ptls_get_context (tls)->random_bytes (self->id, sizeof (self->id)); + memcpy (self->data.base, src.base, src.len); + self->data.len = src.len; -static void -quic_connection_closed (u32 ctx_index) -{ - QUIC_DBG (2, "QUIC connection closed"); - quic_ctx_t *ctx; + /* 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); - ctx = quic_ctx_get (ctx_index); + } + else + { - ASSERT (!ctx->c_quic_ctx_id.is_stream); - // TODO if connection is not established, just delete the session? + /* 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; - // TODO: close all streams? or is the streams closed cb called by quicly? + /* 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; + } - session_transport_delete_notify (&ctx->connection); - // Do not try to send anything anymore - quicly_free (ctx->c_quic_ctx_id.conn); - ctx->c_quic_ctx_id.conn = NULL; - quic_ctx_free (ctx); + return 0; } -static int64_t -quic_get_time (quicly_now_cb * self) +typedef struct quicly_ctx_data_ { - // 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 }; + quicly_context_t quicly_ctx; + char cid_key[17]; + ptls_context_t ptls_ctx; +} quicly_ctx_data_t; 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; +quic_store_quicly_ctx (application_t * app, u8 is_client) +{ + quic_main_t *qm = &quic_main; quicly_context_t *quicly_ctx; - char *cid_key; + ptls_iovec_t key_vec; + if (app->quicly_ctx) + return; + + quicly_ctx_data_t *quicly_ctx_data = + clib_mem_alloc (sizeof (quicly_ctx_data_t)); + clib_memset (quicly_ctx_data, 0, sizeof (*quicly_ctx_data)); /* picotls depends on this */ + quicly_ctx = &quicly_ctx_data->quicly_ctx; + ptls_context_t *ptls_ctx = &quicly_ctx_data->ptls_ctx; + ptls_ctx->random_bytes = ptls_openssl_random_bytes; + ptls_ctx->get_time = &ptls_get_time; + ptls_ctx->key_exchanges = ptls_openssl_key_exchanges; + ptls_ctx->cipher_suites = qm->quic_ciphers[qm->default_cipher]; + ptls_ctx->certificates.list = NULL; + ptls_ctx->certificates.count = 0; + ptls_ctx->esni = NULL; + ptls_ctx->on_client_hello = NULL; + ptls_ctx->emit_certificate = NULL; + ptls_ctx->sign_certificate = NULL; + ptls_ctx->verify_certificate = NULL; + ptls_ctx->ticket_lifetime = 86400; + ptls_ctx->max_early_data_size = 8192; + ptls_ctx->hkdf_label_prefix__obsolete = NULL; + ptls_ctx->require_dhe_on_psk = 1; + ptls_ctx->encrypt_ticket = &qm->session_cache.super; - 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)); + memcpy (quicly_ctx, &quicly_spec_context, sizeof (quicly_context_t)); - quicly_ctx->tls = &quic_tlsctx; + quicly_ctx->max_packet_size = QUIC_MAX_PACKET_SIZE; + quicly_ctx->tls = ptls_ctx; 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 = 0; - quicly_ctx->event_log.cb = quicly_new_default_event_log_cb (stderr); + quicly_ctx->event_log.mask = 0; /* logs */ + quicly_ctx->event_log.cb = quicly_new_default_event_logger (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_streams_uni = (uint64_t) 1 << 60; + quicly_ctx->transport_params.max_streams_bidi = (uint64_t) 1 << 60; + quicly_ctx->transport_params.max_stream_data.bidi_local = (QUIC_FIFO_SIZE - 1); /* max_enq is SIZE - 1 */ + quicly_ctx->transport_params.max_stream_data.bidi_remote = (QUIC_FIFO_SIZE - 1); /* max_enq is SIZE - 1 */ 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->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->timer_handle == QUIC_TIMER_HANDLE_INVALID) + quicly_ctx->tls->random_bytes (quicly_ctx_data->cid_key, 16); + quicly_ctx_data->cid_key[16] = 0; + key_vec = + ptls_iovec_init (quicly_ctx_data->cid_key, + strlen (quicly_ctx_data->cid_key)); + quicly_ctx->cid_encryptor = + quicly_new_default_cid_encryptor (&ptls_openssl_bfecb, + &ptls_openssl_sha256, key_vec); + if (is_client) + return; + if (app->tls_key != NULL && app->tls_cert != NULL) { - if (next_timeout == INT64_MAX) - return; - ctx->timer_handle = - tw_timer_start_1t_3w_1024sl_ov (tw, ctx->c_c_index, 0, - next_timeout_f); - } - else - { - if (next_timeout == INT64_MAX) + if (load_bio_private_key (quicly_ctx->tls, (char *) app->tls_key)) { - tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle); - ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; + QUIC_DBG (1, "failed to read private key from app configuration\n"); + } + if (load_bio_certificate_chain (quicly_ctx->tls, + (char *) app->tls_cert)) + { + QUIC_DBG (1, "failed to load certificate\n"); } - else - tw_timer_update_1t_3w_1024sl_ov (tw, ctx->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 + * *****************************************************************************/ static int -quic_connect (transport_endpoint_cfg_t * tep) -{ - QUIC_DBG (2, "Called quic_connect"); - session_endpoint_cfg_t *sep; - int connect_stream = 0; - - sep = (session_endpoint_cfg_t *) tep; - - if (sep->port == 0) - { - // TODO: better logic to detect if this is a stream or a connection request - connect_stream = 1; - } - - if (connect_stream) - { - return quic_connect_new_stream (sep); - } - else - { - return quic_connect_new_connection (sep); - } -} - -static int -quic_connect_new_stream (session_endpoint_cfg_t * sep) +quic_connect_new_stream (session_t * quic_session, u32 opaque) { uint64_t quic_session_handle; - session_t *quic_session, *stream_session; + session_t *stream_session; quic_stream_data_t *stream_data; quicly_stream_t *stream; quicly_conn_t *conn; @@ -845,85 +958,93 @@ quic_connect_new_stream (session_endpoint_cfg_t * sep) u32 sctx_index; int rv; - // Find base session to which the user want to attach a stream - quic_session_handle = sep->transport_opts; - QUIC_DBG (2, "Opening new stream (qsession %u)", sep->transport_opts); - quic_session = session_get_from_handle (quic_session_handle); + /* Find base session to which the user want to attach a stream */ + quic_session_handle = session_handle (quic_session); + QUIC_DBG (2, "Opening new stream (qsession %u)", quic_session_handle); + + if (session_type_transport_proto (quic_session->session_type) != + TRANSPORT_PROTO_QUIC) + { + QUIC_DBG (1, "received incompatible session"); + return -1; + } - if (quic_session->session_type != - session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, sep->is_ip4)) + app_wrk = app_worker_get_if_valid (quic_session->app_wrk_index); + if (!app_wrk) { - QUIC_DBG (1, "received incompatible session"); + QUIC_DBG (1, "Invalid app worker :("); return -1; } - sctx_index = quic_ctx_alloc (); // Allocate before we get pointers - sctx = quic_ctx_get (sctx_index); - qctx = quic_ctx_get (quic_session->connection_index); - if (qctx->c_quic_ctx_id.is_stream) + sctx_index = quic_ctx_alloc (quic_session->thread_index); /* Allocate before we get pointers */ + sctx = quic_ctx_get (sctx_index, quic_session->thread_index); + qctx = + quic_ctx_get (quic_session->connection_index, quic_session->thread_index); + if (quic_ctx_is_stream (qctx)) { QUIC_DBG (1, "session is a stream"); quic_ctx_free (sctx); return -1; } - sctx->c_quic_ctx_id.parent_app_wrk_id = - qctx->c_quic_ctx_id.parent_app_wrk_id; - sctx->c_quic_ctx_id.parent_app_id = qctx->c_quic_ctx_id.parent_app_id; - sctx->c_quic_ctx_id.quic_connection_ctx_id = qctx->c_c_index; + sctx->parent_app_wrk_id = qctx->parent_app_wrk_id; + sctx->parent_app_id = qctx->parent_app_id; + sctx->quic_connection_ctx_id = qctx->c_c_index; sctx->c_c_index = sctx_index; - sctx->c_quic_ctx_id.is_stream = 1; + sctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; + sctx->flags |= QUIC_F_IS_STREAM; - conn = qctx->c_quic_ctx_id.conn; + conn = qctx->conn; if (!conn || !quicly_connection_is_ready (conn)) return -1; - if ((rv = quicly_open_stream (conn, &stream, 0))) + if ((rv = quicly_open_stream (conn, &stream, 0 /* uni */ ))) { QUIC_DBG (2, "Stream open failed with %d", rv); return -1; } - sctx->c_quic_ctx_id.stream = stream; + sctx->stream = stream; QUIC_DBG (2, "Opened stream %d, creating session", stream->stream_id); - app_wrk = app_worker_get_if_valid (quic_session->app_wrk_index); - stream_session = session_alloc (qctx->c_thread_index); - QUIC_DBG (1, "Created stream_session, id %u ctx %u", - stream_session->session_index, sctx_index); - stream_session->app_wrk_index = quic_session->app_wrk_index; + QUIC_DBG (2, "Allocated stream_session 0x%lx ctx %u", + session_handle (stream_session), sctx_index); + stream_session->app_wrk_index = app_wrk->wrk_index; stream_session->connection_index = sctx_index; + stream_session->listener_handle = quic_session_handle; stream_session->session_type = - session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, - qctx->c_quic_ctx_id.udp_is_ip4); - stream_session->opaque = QUIC_SESSION_TYPE_STREAM; + session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, qctx->udp_is_ip4); + sctx->c_s_index = stream_session->session_index; - sctx->c_quic_ctx_id.stream_session_handle = session_handle (stream_session); if (app_worker_init_connected (app_wrk, stream_session)) { QUIC_DBG (1, "failed to app_worker_init_connected"); - quicly_reset_stream (stream, 0x30003); + quicly_reset_stream (stream, QUIC_APP_ALLOCATION_ERROR); session_free_w_fifos (stream_session); quic_ctx_free (sctx); - return app_worker_connect_notify (app_wrk, NULL, sep->opaque); + return app_worker_connect_notify (app_wrk, NULL, opaque); } + svm_fifo_add_want_deq_ntf (stream_session->rx_fifo, + SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL | + SVM_FIFO_WANT_DEQ_NOTIF_IF_EMPTY); + stream_session->session_state = SESSION_STATE_READY; - if (app_worker_connect_notify (app_wrk, stream_session, sep->opaque)) + if (app_worker_connect_notify (app_wrk, stream_session, opaque)) { QUIC_DBG (1, "failed to notify app"); - quicly_reset_stream (stream, 0x30004); + quicly_reset_stream (stream, QUIC_APP_CONNECT_NOTIFY_ERROR); session_free_w_fifos (stream_session); quic_ctx_free (sctx); return -1; } - session_lookup_add_connection (&sctx->connection, - session_handle (stream_session)); stream_data = (quic_stream_data_t *) stream->data; stream_data->ctx_id = sctx->c_c_index; + stream_data->thread_index = sctx->c_thread_index; + stream_data->app_rx_data_len = 0; return 0; } @@ -938,14 +1059,16 @@ quic_connect_new_connection (session_endpoint_cfg_t * sep) u32 ctx_index; int error; - ctx_index = quic_ctx_alloc (); - ctx = quic_ctx_get (ctx_index); - ctx->c_quic_ctx_id.parent_app_wrk_id = sep->app_wrk_index; - ctx->c_s_index = 0xFAFAFAFA; - ctx->c_quic_ctx_id.udp_is_ip4 = sep->is_ip4; + ctx_index = quic_ctx_alloc (vlib_get_thread_index ()); + ctx = quic_ctx_get (ctx_index, vlib_get_thread_index ()); + ctx->parent_app_wrk_id = sep->app_wrk_index; + ctx->c_s_index = QUIC_SESSION_INVALID; + ctx->c_c_index = ctx_index; + ctx->udp_is_ip4 = sep->is_ip4; ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE; ctx->client_opaque = sep->opaque; + ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; if (sep->hostname) { ctx->srv_hostname = format (0, "%v", sep->hostname); @@ -953,54 +1076,85 @@ quic_connect_new_connection (session_endpoint_cfg_t * sep) } else { - // needed by quic for crypto + determining client / server + /* needed by quic for crypto + determining client / server */ ctx->srv_hostname = format (0, "%U", format_ip46_address, &sep->ip, sep->is_ip4); } clib_memcpy (&cargs->sep, sep, sizeof (session_endpoint_cfg_t)); - cargs->sep.transport_proto = TRANSPORT_PROTO_UDP; + cargs->sep.transport_proto = TRANSPORT_PROTO_UDPC; 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; + ctx->parent_app_id = app_wrk->app_index; cargs->sep_ext.ns_index = app->ns_index; - allocate_quicly_ctx (app, 1 /* is client */ ); + quic_store_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) +static int +quic_connect (transport_endpoint_cfg_t * tep) { - QUIC_DBG (2, "Called quic_disconnect"); - //tw_timer_wheel_1t_3w_1024sl_ov_t *tw; - quic_ctx_t *ctx; + QUIC_DBG (2, "Called quic_connect"); + session_endpoint_cfg_t *sep = (session_endpoint_cfg_t *) tep; + session_t *quic_session; + sep = (session_endpoint_cfg_t *) tep; - QUIC_DBG (1, "Closing connection %x", ctx_index); + quic_session = session_get_from_handle_if_valid (sep->parent_handle); + if (quic_session) + return quic_connect_new_stream (quic_session, sep->opaque); + else + return quic_connect_new_connection (sep); +} - ctx = quic_ctx_get (ctx_index); - if (ctx->c_quic_ctx_id.is_stream) +static void +quic_proto_on_close (u32 ctx_index, u32 thread_index) +{ + quic_ctx_t *ctx = quic_ctx_get_if_valid (ctx_index, thread_index); + if (!ctx) + return; +#if QUIC_DEBUG >= 2 + session_t *stream_session = + session_get (ctx->c_s_index, ctx->c_thread_index); + clib_warning ("Closing session 0x%lx", session_handle (stream_session)); +#endif + if (quic_ctx_is_stream (ctx)) { - quicly_stream_t *stream = ctx->c_quic_ctx_id.stream; - quicly_reset_stream (stream, 0x30000); - session_transport_delete_notify (&ctx->connection); - quic_ctx_free (ctx); + quicly_stream_t *stream = ctx->stream; + quicly_reset_stream (stream, QUIC_APP_ERROR_CLOSE_NOTIFY); + quic_send_packets (ctx); + return; } - else + + switch (ctx->conn_state) { - quicly_conn_t *conn = ctx->c_quic_ctx_id.conn; - // Start connection closing. Keep sending packets until quicly_send - // returns QUICLY_ERROR_FREE_CONNECTION - quicly_close (conn, 0, ""); + case QUIC_CONN_STATE_READY: + ctx->conn_state = QUIC_CONN_STATE_ACTIVE_CLOSING; + quicly_conn_t *conn = ctx->conn; + /* Start connection closing. Keep sending packets until quicly_send + returns QUICLY_ERROR_FREE_CONNECTION */ + quicly_close (conn, QUIC_APP_ERROR_CLOSE_NOTIFY, "Closed by peer"); + /* This also causes all streams to be closed (and the cb called) */ quic_send_packets (ctx); + break; + case QUIC_CONN_STATE_PASSIVE_CLOSING: + ctx->conn_state = QUIC_CONN_STATE_PASSIVE_CLOSING_APP_CLOSED; + /* send_packets will eventually return an error, we delete the conn at + that point */ + break; + case QUIC_CONN_STATE_PASSIVE_CLOSING_QUIC_CLOSED: + quic_connection_delete (ctx); + break; + default: + QUIC_DBG (0, "BUG"); + break; } } @@ -1011,7 +1165,7 @@ quic_start_listen (u32 quic_listen_session_index, transport_endpoint_t * tep) quic_main_t *qm = &quic_main; session_handle_t udp_handle; session_endpoint_cfg_t *sep; - session_t *udp_listen_session, *quic_listen_session; + session_t *udp_listen_session; app_worker_t *app_wrk; application_t *app; quic_ctx_t *lctx; @@ -1020,15 +1174,15 @@ quic_start_listen (u32 quic_listen_session_index, transport_endpoint_t * tep) sep = (session_endpoint_cfg_t *) tep; app_wrk = app_worker_get (sep->app_wrk_index); - // We need to call this because we call app_worker_init_connected in - // quic_accept_stream, which assumes the connect segment manager exists + /* We need to call this because we call app_worker_init_connected in + * quic_accept_stream, which assumes the connect segment manager exists */ app_worker_alloc_connects_segment_manager (app_wrk); app = application_get (app_wrk->app_index); QUIC_DBG (2, "Called quic_start_listen for app %d", app_wrk->app_index); - allocate_quicly_ctx (app, 0 /* is_client */ ); + quic_store_quicly_ctx (app, 0 /* is_client */ ); - sep->transport_proto = TRANSPORT_PROTO_UDP; + sep->transport_proto = TRANSPORT_PROTO_UDPC; memset (args, 0, sizeof (*args)); args->app_index = qm->app_index; args->sep_ext = *sep; @@ -1036,25 +1190,30 @@ quic_start_listen (u32 quic_listen_session_index, transport_endpoint_t * tep) if (vnet_listen (args)) return -1; - lctx_index = quic_ctx_alloc (); // listener + lctx_index = quic_ctx_alloc (0); udp_handle = args->handle; app_listener = app_listener_get_w_handle (udp_handle); udp_listen_session = app_listener_get_session (app_listener); udp_listen_session->opaque = lctx_index; - quic_listen_session = listen_session_get (quic_listen_session_index); - quic_listen_session->opaque = QUIC_SESSION_TYPE_LISTEN; - - lctx = quic_ctx_get (lctx_index); // listener - lctx->is_listener = 1; - lctx->c_quic_ctx_id.parent_app_wrk_id = sep->app_wrk_index; - lctx->c_quic_ctx_id.parent_app_id = app_wrk->app_index; - lctx->c_quic_ctx_id.udp_session_handle = udp_handle; - lctx->c_quic_ctx_id.quic_session_handle = - listen_session_get_handle (quic_listen_session); - lctx->c_quic_ctx_id.udp_is_ip4 = sep->is_ip4; - - QUIC_DBG (1, "Started listening %d", lctx_index); + lctx = quic_ctx_get (lctx_index, 0); + lctx->flags |= QUIC_F_IS_LISTENER; + + clib_memcpy (&lctx->c_rmt_ip, &args->sep.peer.ip, sizeof (ip46_address_t)); + clib_memcpy (&lctx->c_lcl_ip, &args->sep.ip, sizeof (ip46_address_t)); + lctx->c_rmt_port = args->sep.peer.port; + lctx->c_lcl_port = args->sep.port; + lctx->c_is_ip4 = args->sep.is_ip4; + lctx->c_fib_index = args->sep.fib_index; + lctx->c_proto = TRANSPORT_PROTO_QUIC; + lctx->parent_app_wrk_id = sep->app_wrk_index; + lctx->parent_app_id = app_wrk->app_index; + lctx->udp_session_handle = udp_handle; + lctx->c_s_index = quic_listen_session_index; + + QUIC_DBG (2, "Listening UDP session 0x%lx", + session_handle (udp_listen_session)); + QUIC_DBG (2, "Listening QUIC session 0x%lx", quic_listen_session_index); return lctx_index; } @@ -1063,28 +1222,27 @@ quic_stop_listen (u32 lctx_index) { QUIC_DBG (2, "Called quic_stop_listen"); quic_ctx_t *lctx; - - lctx = quic_ctx_get (lctx_index); // listener + lctx = quic_ctx_get (lctx_index, 0); + ASSERT (quic_ctx_is_listener (lctx)); vnet_unlisten_args_t a = { - .handle = lctx->c_quic_ctx_id.udp_session_handle, + .handle = lctx->udp_session_handle, .app_index = quic_main.app_index, .wrk_map_index = 0 /* default wrk */ }; if (vnet_unlisten (&a)) clib_warning ("unlisten errored"); - // TODO: crypto state cleanup + /* TODO: crypto state cleanup */ - quic_ctx_free (lctx); // listener + quic_ctx_free (lctx); return 0; } static 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); + ctx = quic_ctx_get (ctx_index, thread_index); return &ctx->connection; } @@ -1093,24 +1251,49 @@ quic_listener_get (u32 listener_index) { QUIC_DBG (2, "Called quic_listener_get"); quic_ctx_t *ctx; - ctx = quic_ctx_get (listener_index); + ctx = quic_ctx_get (listener_index, 0); return &ctx->connection; } -static void -quic_update_time (f64 now, u8 thread_index) +static u8 * +format_quic_ctx (u8 * s, va_list * args) { - 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); + quic_ctx_t *ctx = va_arg (*args, quic_ctx_t *); + u32 verbose = va_arg (*args, u32); + u8 *str = 0; + + if (!ctx) + return s; + str = format (str, "[#%d][Q] ", ctx->c_thread_index); + + if (quic_ctx_is_listener (ctx)) + str = format (str, "Listener, UDP %ld", ctx->udp_session_handle); + else if (quic_ctx_is_stream (ctx)) + str = format (str, "Stream %ld conn %d", + ctx->stream->stream_id, ctx->quic_connection_ctx_id); + else /* connection */ + str = format (str, "Conn %d UDP %d", ctx->c_c_index, + ctx->udp_session_handle); + + str = format (str, " app %d wrk %d", ctx->parent_app_id, + ctx->parent_app_wrk_id); + + if (verbose == 1) + s = format (s, "%-50s%-15d", str, ctx->conn_state); + else + s = format (s, "%s\n", str); + vec_free (str); + return s; } static u8 * format_quic_connection (u8 * s, va_list * args) { - s = format (s, "[QUIC] connection"); //TODO + u32 qc_index = va_arg (*args, u32); + u32 thread_index = va_arg (*args, u32); + u32 verbose = va_arg (*args, u32); + quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index); + s = format (s, "%U", format_quic_ctx, ctx, verbose); return s; } @@ -1118,16 +1301,22 @@ static u8 * format_quic_half_open (u8 * s, va_list * args) { u32 qc_index = va_arg (*args, u32); - quic_ctx_t *ctx = quic_ctx_get (qc_index); - s = format (s, "[QUIC] half-open app %u", ctx->c_quic_ctx_id.parent_app_id); + u32 thread_index = va_arg (*args, u32); + quic_ctx_t *ctx = quic_ctx_get (qc_index, thread_index); + s = + format (s, "[#%d][Q] half-open app %u", thread_index, ctx->parent_app_id); return s; } -// TODO improve +/* TODO improve */ static u8 * format_quic_listener (u8 * s, va_list * args) { - s = format (s, "[QUIC] listener"); // TODO + u32 tci = va_arg (*args, u32); + u32 thread_index = va_arg (*args, u32); + u32 verbose = va_arg (*args, u32); + quic_ctx_t *ctx = quic_ctx_get (tci, thread_index); + s = format (s, "%U", format_quic_ctx, ctx, verbose); return s; } @@ -1161,128 +1350,192 @@ quic_build_sockaddr (struct sockaddr *sa, socklen_t * salen, } static int -quic_notify_app_connected (quic_ctx_t * ctx) +quic_on_client_connected (quic_ctx_t * ctx) { - QUIC_DBG (1, "quic_notify_app_connected"); session_t *quic_session; app_worker_t *app_wrk; u32 ctx_id = ctx->c_c_index; + u32 thread_index = ctx->c_thread_index; + int rv; - app_wrk = app_worker_get_if_valid (ctx->c_quic_ctx_id.parent_app_wrk_id); + app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id); if (!app_wrk) { quic_disconnect_transport (ctx); return -1; } - quic_session = session_alloc (ctx->c_thread_index); + quic_session = session_alloc (thread_index); - QUIC_DBG (1, "Created quic_session, id %u", quic_session->session_index); + QUIC_DBG (2, "Allocated quic session 0x%lx", session_handle (quic_session)); ctx->c_s_index = quic_session->session_index; - quic_session->app_wrk_index = ctx->c_quic_ctx_id.parent_app_wrk_id; + quic_session->app_wrk_index = ctx->parent_app_wrk_id; quic_session->connection_index = ctx->c_c_index; - quic_session->opaque = QUIC_SESSION_TYPE_QUIC; + quic_session->listener_handle = SESSION_INVALID_HANDLE; quic_session->session_type = - session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, - ctx->c_quic_ctx_id.udp_is_ip4); + session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4); if (app_worker_init_connected (app_wrk, quic_session)) { QUIC_DBG (1, "failed to app_worker_init_connected"); - quic_disconnect (ctx->c_c_index, vlib_get_thread_index ()); + quic_proto_on_close (ctx_id, thread_index); return app_worker_connect_notify (app_wrk, NULL, ctx->client_opaque); } quic_session->session_state = SESSION_STATE_CONNECTING; - if (app_worker_connect_notify (app_wrk, quic_session, ctx->client_opaque)) + if ((rv = app_worker_connect_notify (app_wrk, quic_session, + ctx->client_opaque))) { - QUIC_DBG (1, "failed to notify app"); - quic_disconnect (ctx->c_c_index, vlib_get_thread_index ()); + QUIC_DBG (1, "failed to notify app %d", rv); + quic_proto_on_close (ctx_id, thread_index); return -1; } - // If the app opens a stream in its callback it may invalidate ctx - ctx = quic_ctx_get (ctx_id); - ctx->c_quic_ctx_id.quic_session_handle = session_handle (quic_session); + /* If the app opens a stream in its callback it may invalidate ctx */ + ctx = quic_ctx_get (ctx_id, thread_index); quic_session->session_state = SESSION_STATE_LISTENING; - session_lookup_add_connection (&ctx->connection, - session_handle (quic_session)); return 0; } +static void +quic_receive_connection (void *arg) +{ + u32 new_ctx_id, thread_index = vlib_get_thread_index (); + quic_ctx_t *temp_ctx, *new_ctx; + clib_bihash_kv_16_8_t kv; + quicly_conn_t *conn; + session_t *udp_session; + + temp_ctx = arg; + new_ctx_id = quic_ctx_alloc (thread_index); + new_ctx = quic_ctx_get (new_ctx_id, thread_index); + + QUIC_DBG (2, "Received conn %u (now %u)", temp_ctx->c_thread_index, + new_ctx_id); + + + memcpy (new_ctx, temp_ctx, sizeof (quic_ctx_t)); + clib_mem_free (temp_ctx); + + new_ctx->c_thread_index = thread_index; + new_ctx->c_c_index = new_ctx_id; + + conn = new_ctx->conn; + quic_store_conn_ctx (conn, new_ctx); + quic_make_connection_key (&kv, quicly_get_master_id (conn)); + kv.value = ((u64) thread_index) << 32 | (u64) new_ctx_id; + QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]); + clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ ); + new_ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; + quic_update_timer (new_ctx); + + /* Trigger write on this connection if necessary */ + udp_session = session_get_from_handle (new_ctx->udp_session_handle); + if (svm_fifo_max_dequeue (udp_session->tx_fifo)) + if (session_send_io_evt_to_thread (udp_session->tx_fifo, + SESSION_IO_EVT_TX)) + QUIC_DBG (4, "Cannot send TX event"); +} + +static void +quic_transfer_connection (u32 ctx_index, u32 dest_thread) +{ + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; + quic_ctx_t *ctx, *temp_ctx; + u32 thread_index = vlib_get_thread_index (); + + QUIC_DBG (2, "Transferring conn %u to thread %u", ctx_index, dest_thread); + + temp_ctx = clib_mem_alloc (sizeof (quic_ctx_t)); + ASSERT (temp_ctx); + ctx = quic_ctx_get (ctx_index, thread_index); + + memcpy (temp_ctx, ctx, sizeof (quic_ctx_t)); + + /* Remove from timer wheel and thread-local pool */ + if (ctx->timer_handle != QUIC_TIMER_HANDLE_INVALID) + { + tw = &quic_main.wrk_ctx[thread_index].timer_wheel; + tw_timer_stop_1t_3w_1024sl_ov (tw, ctx->timer_handle); + } + quic_ctx_free (ctx); + + /* Send connection to destination thread */ + session_send_rpc_evt_to_thread (dest_thread, quic_receive_connection, + (void *) temp_ctx); +} + static int quic_session_connected_callback (u32 quic_app_index, u32 ctx_index, session_t * udp_session, u8 is_fail) { QUIC_DBG (2, "QSession is now connected (id %u)", udp_session->session_index); - // This should always be called before quic_connect returns since UDP always - // connects instantly. + /* This should always be called before quic_connect returns since UDP always + * connects instantly. */ + clib_bihash_kv_16_8_t kv; struct sockaddr_in6 sa6; struct sockaddr *sa = (struct sockaddr *) &sa6; socklen_t salen; transport_connection_t *tc; + app_worker_t *app_wrk; + quicly_conn_t *conn; quic_ctx_t *ctx; + u32 thread_index = vlib_get_thread_index (); int ret; - application_t *app; - app_worker_t *app_wrk; + quicly_context_t *quicly_ctx; + - ctx = quic_ctx_get (ctx_index); + ctx = quic_ctx_get (ctx_index, thread_index); if (is_fail) { u32 api_context; - int rv = 0; - - app_wrk = - app_worker_get_if_valid (ctx->c_quic_ctx_id.parent_app_wrk_id); + app_wrk = app_worker_get_if_valid (ctx->parent_app_wrk_id); if (app_wrk) { api_context = ctx->c_s_index; app_worker_connect_notify (app_wrk, 0, api_context); } - return rv; - } - - app_wrk = app_worker_get_if_valid (ctx->c_quic_ctx_id.parent_app_wrk_id); - if (!app_wrk) - { - QUIC_DBG (1, "Appwrk not found"); - return -1; + return 0; } - app = application_get (app_wrk->app_index); - ctx->c_thread_index = vlib_get_thread_index (); + ctx->c_thread_index = thread_index; ctx->c_c_index = ctx_index; - QUIC_DBG (1, "Quic connect returned %u. New ctx [%u]%x", - is_fail, vlib_get_thread_index (), (ctx) ? ctx_index : ~0); + QUIC_DBG (2, "Quic connect returned %u. New ctx [%u]%x", + is_fail, thread_index, (ctx) ? ctx_index : ~0); - ctx->c_quic_ctx_id.udp_session_handle = session_handle (udp_session); - udp_session->opaque = ctx_index; - udp_session->session_state = SESSION_STATE_READY; + ctx->udp_session_handle = session_handle (udp_session); + udp_session->opaque = ctx->parent_app_id; - // Init QUIC lib connection - // Generate required sockaddr & salen + /* Init QUIC lib connection + * Generate required sockaddr & salen */ tc = session_get_transport (udp_session); 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); + quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx); + ret = quicly_connect (&ctx->conn, 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; + /* Save context handle in quicly connection */ + quic_store_conn_ctx (ctx->conn, ctx); assert (ret == 0); - int rv = quic_send_packets (ctx); - if (rv) - { - QUIC_DBG (1, "Error sending packets %d, closing connection", rv); - quic_connection_closed (ctx_index); - } + /* Register connection in connections map */ + conn = ctx->conn; + quic_make_connection_key (&kv, quicly_get_master_id (conn)); + kv.value = ((u64) thread_index) << 32 | (u64) ctx_index; + QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]); + clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ ); + + /* UDP stack quirk? preemptively transfer connection if that happens */ + if (udp_session->thread_index != thread_index) + quic_transfer_connection (ctx_index, udp_session->thread_index); + else + quic_send_packets (ctx); + return ret; } @@ -1298,10 +1551,74 @@ quic_session_reset_callback (session_t * s) clib_warning ("UDP session reset???"); } +static void +quic_session_migrate_callback (session_t * s, session_handle_t new_sh) +{ + /* + * TODO we need better way to get the connection from the session + * This will become possible once we stop storing the app id in the UDP + * session opaque + */ + u32 thread_index = vlib_get_thread_index (); + u64 old_session_handle = session_handle (s); + u32 new_thread = session_thread_from_handle (new_sh); + quic_ctx_t *ctx; + + QUIC_DBG (1, "Session %x migrated to %lx", s->session_index, new_sh); + /* *INDENT-OFF* */ + pool_foreach (ctx, quic_main.ctx_pool[thread_index], + ({ + if (ctx->udp_session_handle == old_session_handle) + { + /* Right ctx found, move associated conn */ + QUIC_DBG (5, "Found right ctx: %x", ctx->c_c_index); + ctx->udp_session_handle = new_sh; + quic_transfer_connection (ctx->c_c_index, new_thread); + return; + } + })); + /* *INDENT-ON* */ + QUIC_DBG (0, "BUG: Connection to migrate not found"); +} + int -quic_session_accepted_callback (session_t * s) +quic_session_accepted_callback (session_t * udp_session) { - /* never called */ + /* New UDP connection, try to accept it */ + u32 ctx_index; + u32 *pool_index; + quic_ctx_t *ctx, *lctx; + session_t *udp_listen_session; + u32 thread_index = vlib_get_thread_index (); + + udp_listen_session = + listen_session_get_from_handle (udp_session->listener_handle); + + ctx_index = quic_ctx_alloc (thread_index); + ctx = quic_ctx_get (ctx_index, thread_index); + ctx->c_thread_index = udp_session->thread_index; + ctx->c_c_index = ctx_index; + ctx->c_s_index = QUIC_SESSION_INVALID; + ctx->udp_session_handle = session_handle (udp_session); + QUIC_DBG (2, "ACCEPTED UDP 0x%lx", ctx->udp_session_handle); + ctx->listener_ctx_id = udp_listen_session->opaque; + lctx = quic_ctx_get (udp_listen_session->opaque, + udp_listen_session->thread_index); + ctx->udp_is_ip4 = lctx->c_is_ip4; + ctx->parent_app_id = lctx->parent_app_id; + ctx->parent_app_wrk_id = lctx->parent_app_wrk_id; + ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; + ctx->conn_state = QUIC_CONN_STATE_OPENED; + ctx->c_flags |= TRANSPORT_CONNECTION_F_NO_LOOKUP; + + udp_session->opaque = ctx->parent_app_id; + + /* Put this ctx in the "opening" pool */ + pool_get (quic_main.wrk_ctx[ctx->c_thread_index].opening_ctx_pool, + pool_index); + *pool_index = ctx_index; + + /* TODO timeout to delete these if they never connect */ return 0; } @@ -1324,148 +1641,142 @@ quic_del_segment_callback (u32 client_index, u64 seg_handle) } static int -quic_custom_tx_callback (void *s) +quic_custom_app_rx_callback (transport_connection_t * tc) { - QUIC_DBG (2, "Called quic_custom_tx_callback"); - session_t *stream_session = (session_t *) s; quic_ctx_t *ctx; - svm_fifo_t *f; + session_t *stream_session = session_get (tc->s_index, tc->thread_index); + QUIC_DBG (3, "Received app READ notification"); + quic_ack_rx_data (stream_session); + svm_fifo_reset_has_deq_ntf (stream_session->rx_fifo); + + /* Need to send packets (acks may never be sent otherwise) */ + ctx = quic_ctx_get (stream_session->connection_index, + stream_session->thread_index); + quic_send_packets (ctx); + return 0; +} + +static int +quic_custom_tx_callback (void *s, u32 max_burst_size) +{ + session_t *stream_session = (session_t *) s; quicly_stream_t *stream; - u32 deq_max; - u8 *data; + quic_ctx_t *ctx; + int rv; if (PREDICT_FALSE (stream_session->session_state >= SESSION_STATE_TRANSPORT_CLOSING)) return 0; - ctx = quic_ctx_get (stream_session->connection_index); - if (PREDICT_FALSE (!ctx->c_quic_ctx_id.is_stream)) + ctx = + quic_ctx_get (stream_session->connection_index, + stream_session->thread_index); + if (PREDICT_FALSE (!quic_ctx_is_stream (ctx))) { - QUIC_DBG (1, "Error: trying to send on quic session not stream"); - return -1; + goto tx_end; /* Most probably a reschedule */ } - stream = ctx->c_quic_ctx_id.stream; - - f = stream_session->tx_fifo; - deq_max = svm_fifo_max_dequeue (f); - if (!deq_max) + QUIC_DBG (3, "Stream TX event"); + quic_ack_rx_data (stream_session); + if (!svm_fifo_max_dequeue (stream_session->tx_fifo)) return 0; - data = svm_fifo_head (f); - if (quicly_streambuf_egress_write (stream, data, deq_max)) - { - assert (0); - return 0; - } - QUIC_DBG (2, "Sent %u bytes", deq_max); - svm_fifo_dequeue_drop (f, deq_max); - int rv = quic_send_packets (ctx); - if (rv) + stream = ctx->stream; + if (!quicly_sendstate_is_open (&stream->sendstate)) { - QUIC_DBG (1, "TX error sending packets %d, closing connection", rv); - quic_connection_closed (ctx->c_quic_ctx_id.quic_connection_ctx_id); + QUIC_DBG (1, "Warning: tried to send on closed stream"); + return -1; } + + if ((rv = quicly_stream_sync_sendbuf (stream, 1)) != 0) + return rv; + +tx_end: + quic_send_packets (ctx); return 0; } + +/* + * Returns 0 if a matching connection is found and is on the right thread. + * Otherwise returns -1. + * If a connection is found, even on the wrong thread, ctx_thread and ctx_index + * will be set. + */ static inline int -quic_find_packet_ctx (quic_ctx_t ** ctx, quicly_conn_t ** conn, +quic_find_packet_ctx (u32 * ctx_thread, u32 * ctx_index, struct sockaddr *sa, socklen_t salen, - quicly_decoded_packet_t packet) + quicly_decoded_packet_t * packet, + u32 caller_thread_index) { 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 (!ctx_->c_quic_ctx_id.is_stream && 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; -} + clib_bihash_kv_16_8_t kv; + clib_bihash_16_8_t *h; -static int -quic_receive (quic_ctx_t * ctx, quicly_conn_t * conn, - quicly_decoded_packet_t packet) -{ - u32 ctx_id = ctx->c_c_index; - quicly_receive (conn, &packet); - // ctx pointer may change if a new stream is opened - ctx = quic_ctx_get (ctx_id); - // Conn may be set to null if the connection is terminated - if (ctx->c_quic_ctx_id.conn && ctx->conn_state == QUIC_CONN_STATE_HANDSHAKE) + h = &quic_main.connection_hash; + quic_make_connection_key (&kv, &packet->cid.dest.plaintext); + QUIC_DBG (3, "Searching conn with id %lu %lu", kv.key[0], kv.key[1]); + + if (clib_bihash_search_16_8 (h, &kv, &kv) == 0) { - if (quicly_connection_is_ready (conn)) + u32 index = kv.value & UINT32_MAX; + u32 thread_id = kv.value >> 32; + /* Check if this connection belongs to this thread, otherwise + * ask for it to be moved */ + if (thread_id != caller_thread_index) { - ctx->conn_state = QUIC_CONN_STATE_READY; - if (quicly_is_client (conn)) - { - quic_notify_app_connected (ctx); - ctx = quic_ctx_get (ctx_id); - } + QUIC_DBG (2, "Connection is on wrong thread"); + /* Cannot make full check with quicly_is_destination... */ + *ctx_index = index; + *ctx_thread = thread_id; + return -1; + } + ctx_ = quic_ctx_get (index, vlib_get_thread_index ()); + conn_ = ctx_->conn; + if (conn_ && quicly_is_destination (conn_, sa, salen, packet)) + { + QUIC_DBG (3, "Connection found"); + *ctx_index = index; + *ctx_thread = thread_id; + return 0; } } - if (quic_send_packets (ctx)) - { - quic_connection_closed (ctx->c_c_index); - } - return 0; + QUIC_DBG (3, "connection not found"); + return -1; } static int quic_create_quic_session (quic_ctx_t * ctx) { - session_t *quic_session, *quic_listen_session; + session_t *quic_session; app_worker_t *app_wrk; quic_ctx_t *lctx; int rv; quic_session = session_alloc (ctx->c_thread_index); - QUIC_DBG (1, "Created quic session, id %u ctx %u", - quic_session->session_index, ctx->c_c_index); + QUIC_DBG (2, "Allocated quic_session, 0x%lx ctx %u", + session_handle (quic_session), ctx->c_c_index); quic_session->session_state = SESSION_STATE_LISTENING; ctx->c_s_index = quic_session->session_index; - lctx = quic_ctx_get (ctx->c_quic_ctx_id.listener_ctx_id); + lctx = quic_ctx_get (ctx->listener_ctx_id, 0); - quic_listen_session = - listen_session_get_from_handle (lctx->c_quic_ctx_id.quic_session_handle); - quic_session->app_wrk_index = lctx->c_quic_ctx_id.parent_app_wrk_id; + quic_session->app_wrk_index = lctx->parent_app_wrk_id; quic_session->connection_index = ctx->c_c_index; quic_session->session_type = - session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, - ctx->c_quic_ctx_id.udp_is_ip4); - quic_session->listener_index = quic_listen_session->session_index; - quic_session->app_index = quic_main.app_index; - quic_session->opaque = QUIC_SESSION_TYPE_QUIC; - - // TODO: don't alloc fifos when we don't transfer data on this session - // but we still need fifos for the events? + session_type_from_proto_and_ip (TRANSPORT_PROTO_QUIC, ctx->udp_is_ip4); + quic_session->listener_handle = lctx->c_s_index; + + /* TODO: don't alloc fifos when we don't transfer data on this session + * but we still need fifos for the events? */ if ((rv = app_worker_init_accepted (quic_session))) { QUIC_DBG (1, "failed to allocate fifos"); session_free (quic_session); return rv; } - ctx->c_quic_ctx_id.quic_session_handle = session_handle (quic_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_id = quic_session->app_wrk_index; - session_lookup_add_connection (&ctx->connection, - session_handle (quic_session)); app_wrk = app_worker_get (quic_session->app_wrk_index); - rv = app_worker_accept_notify (app_wrk, quic_session); - if (rv) + if ((rv = app_worker_accept_notify (app_wrk, quic_session))) { QUIC_DBG (1, "failed to notify accept worker app"); return rv; @@ -1474,54 +1785,51 @@ quic_create_quic_session (quic_ctx_t * ctx) } static int -quic_create_connection (quicly_context_t * quicly_ctx, - u64 udp_session_handle, u32 lctx_index, - struct sockaddr *sa, +quic_create_connection (u32 ctx_index, struct sockaddr *sa, socklen_t salen, quicly_decoded_packet_t packet) { + clib_bihash_kv_16_8_t kv; quic_ctx_t *ctx; - u32 ctx_index; quicly_conn_t *conn; + u32 thread_index = vlib_get_thread_index (); + quicly_context_t *quicly_ctx; int rv; - /* new connection, accept and create context if packet is valid */ - // TODO: check if socket is actually listening? + /* new connection, accept and create context if packet is valid + * TODO: check if socket is actually listening? */ + ctx = quic_ctx_get (ctx_index, thread_index); + quicly_ctx = quic_get_quicly_ctx_from_ctx (ctx); if ((rv = quicly_accept (&conn, quicly_ctx, sa, salen, &packet, ptls_iovec_init (NULL, 0), &quic_main.next_cid, NULL))) { - // Invalid packet, pass + /* Invalid packet, pass */ assert (conn == NULL); - QUIC_DBG (2, "Accept failed with %d", rv); + QUIC_DBG (1, "Accept failed with %d", rv); + /* TODO: cleanup created quic ctx and UDP session */ 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.udp_session_handle = udp_session_handle; - ctx->c_quic_ctx_id.listener_ctx_id = lctx_index; - ctx->timer_handle = QUIC_TIMER_HANDLE_INVALID; - ctx->c_quic_ctx_id.conn = conn; + /* Save ctx handle in quicly connection */ + quic_store_conn_ctx (conn, ctx); + ctx->conn = conn; + ctx->conn_state = QUIC_CONN_STATE_HANDSHAKE; quic_create_quic_session (ctx); - if (quic_send_packets (ctx)) - { - quic_connection_closed (ctx_index); - } - return 0; + /* Register connection in connections map */ + quic_make_connection_key (&kv, quicly_get_master_id (conn)); + kv.value = ((u64) thread_index) << 32 | (u64) ctx_index; + clib_bihash_add_del_16_8 (&quic_main.connection_hash, &kv, 1 /* is_add */ ); + QUIC_DBG (2, "Registering conn with id %lu %lu", kv.key[0], kv.key[1]); + + return quic_send_packets (ctx); } static int -quic_reset_connection (quicly_context_t * quicly_ctx, u64 udp_session_handle, +quic_reset_connection (u64 udp_session_handle, struct sockaddr *sa, socklen_t salen, quicly_decoded_packet_t packet) { @@ -1531,93 +1839,230 @@ quic_reset_connection (quicly_context_t * quicly_ctx, u64 udp_session_handle, * reset, then the next CID is highly likely to contain a non-authenticating * CID, ... */ QUIC_DBG (2, "Sending stateless reset"); + int rv; quicly_datagram_t *dgram; session_t *udp_session; - if (packet.cid.dest.plaintext.node_id == 0 - && packet.cid.dest.plaintext.thread_id == 0) + quicly_context_t *quicly_ctx; + if (packet.cid.dest.plaintext.node_id != 0 + || packet.cid.dest.plaintext.thread_id != 0) + return 0; + quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle); + dgram = quicly_send_stateless_reset (quicly_ctx, sa, salen, + &packet.cid.dest.plaintext); + if (dgram == NULL) + return 1; + udp_session = session_get_from_handle (udp_session_handle); + rv = quic_send_datagram (udp_session, dgram); + if (svm_fifo_set_event (udp_session->tx_fifo)) + session_send_io_evt_to_thread (udp_session->tx_fifo, SESSION_IO_EVT_TX); + return rv; +} + +typedef struct quic_rx_packet_ctx_ +{ + quicly_decoded_packet_t packet; + u8 data[QUIC_MAX_PACKET_SIZE]; + u32 ctx_index; + u32 thread_index; +} quic_rx_packet_ctx_t; + +static void +check_quic_client_connected (struct quic_rx_packet_ctx_ *quic_rx_ctx) +{ + /* ctx pointer may change if a new stream is opened */ + quic_ctx_t *ctx = quic_ctx_get (quic_rx_ctx->ctx_index, + quic_rx_ctx->thread_index); + /* Conn may be set to null if the connection is terminated */ + if (ctx->conn && ctx->conn_state == QUIC_CONN_STATE_HANDSHAKE) { - dgram = quicly_send_stateless_reset (quicly_ctx, sa, salen, - &packet.cid.dest.plaintext); - udp_session = session_get_from_handle (udp_session_handle); - if (quic_send_datagram (udp_session, dgram)) // TODO : set event on fifo - QUIC_DBG (2, "Send reset failed"); + if (quicly_connection_is_ready (ctx->conn)) + { + ctx->conn_state = QUIC_CONN_STATE_READY; + if (quicly_is_client (ctx->conn)) + { + quic_on_client_connected (ctx); + } + } } - return 0; + } static int -quic_app_rx_callback (session_t * udp_session) +quic_process_one_rx_packet (u64 udp_session_handle, + quicly_context_t * quicly_ctx, svm_fifo_t * f, + u32 * fifo_offset, u32 * max_packet, u32 packet_n, + quic_rx_packet_ctx_t * packet_ctx) { - // Read data from UDP rx_fifo and pass it to the quicly conn. - 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; + quic_ctx_t *ctx = NULL; 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 = udp_session->opaque; - u64 udp_session_handle = session_handle (udp_session); + u32 full_len, ret; + int err, rv = 0; + packet_ctx->thread_index = UINT32_MAX; + packet_ctx->ctx_index = UINT32_MAX; + u32 thread_index = vlib_get_thread_index (); + u32 *opening_ctx_pool, *ctx_index_ptr; + u32 cur_deq = svm_fifo_max_dequeue (f) - *fifo_offset; + + if (cur_deq == 0) + { + *max_packet = packet_n + 1; + return 0; + } + + if (cur_deq < SESSION_CONN_HDR_LEN) + { + QUIC_DBG (1, "Not enough data for even a header in RX"); + return 1; + } + ret = svm_fifo_peek (f, *fifo_offset, SESSION_CONN_HDR_LEN, (u8 *) & ph); + if (ret != SESSION_CONN_HDR_LEN) + { + QUIC_DBG (1, "Not enough data for header in RX"); + return 1; + } + ASSERT (ph.data_offset == 0); + full_len = ph.data_length + SESSION_CONN_HDR_LEN; + if (full_len > cur_deq) + { + QUIC_DBG (1, "Not enough data in fifo RX"); + return 1; + } - // DEBUG - // lctx = quic_ctx_get (lctx_index); - // QUIC_DBG (2, "Got RX data on session %d", - // lctx->c_quic_ctx_id.udp_session_handle); + /* Quicly can read len bytes from the fifo at offset: + * ph.data_offset + SESSION_CONN_HDR_LEN */ + ret = + svm_fifo_peek (f, SESSION_CONN_HDR_LEN + *fifo_offset, ph.data_length, + packet_ctx->data); + if (ret != ph.data_length) + { + QUIC_DBG (1, "Not enough data peeked in RX"); + return 1; + } + + rv = 0; + quic_build_sockaddr (sa, &salen, &ph.rmt_ip, ph.rmt_port, ph.is_ip4); + quicly_ctx = quic_get_quicly_ctx_from_udp (udp_session_handle); + plen = + quicly_decode_packet (quicly_ctx, &packet_ctx->packet, packet_ctx->data, + ph.data_length); + + if (plen == SIZE_MAX) + { + *fifo_offset += SESSION_CONN_HDR_LEN + ph.data_length; + return 1; + } + + err = + quic_find_packet_ctx (&packet_ctx->thread_index, &packet_ctx->ctx_index, + sa, salen, &packet_ctx->packet, thread_index); + if (err == 0) + { + ctx = quic_ctx_get (packet_ctx->ctx_index, thread_index); + rv = quicly_receive (ctx->conn, &packet_ctx->packet); + if (rv) + QUIC_DBG (1, "quicly_receive return error %d", rv); + } + else if (packet_ctx->ctx_index != UINT32_MAX) + { + /* Connection found but on wrong thread, ask move */ + *max_packet = packet_n + 1; + return 0; + } + else if ((packet_ctx->packet.octets.base[0] & QUICLY_PACKET_TYPE_BITMASK) == + QUICLY_PACKET_TYPE_INITIAL) + { + /* Try to find matching "opening" ctx */ + opening_ctx_pool = quic_main.wrk_ctx[thread_index].opening_ctx_pool; + + /* *INDENT-OFF* */ + pool_foreach (ctx_index_ptr, opening_ctx_pool, + ({ + ctx = quic_ctx_get (*ctx_index_ptr, thread_index); + if (ctx->udp_session_handle == udp_session_handle) + { + /* Right ctx found, create conn & remove from pool */ + quic_create_connection(*ctx_index_ptr, sa, salen, packet_ctx->packet); + pool_put (opening_ctx_pool, ctx_index_ptr); + *max_packet = packet_n + 1; + packet_ctx->thread_index = thread_index; + packet_ctx->ctx_index = *ctx_index_ptr; + goto updateOffset; + } + })); + /* *INDENT-ON* */ + } + else + { + quic_reset_connection (udp_session_handle, sa, salen, + packet_ctx->packet); + } + +updateOffset: + *fifo_offset += SESSION_CONN_HDR_LEN + ph.data_length; + return 0; +} + +static int +quic_app_rx_callback (session_t * udp_session) +{ + /* Read data from UDP rx_fifo and pass it to the quicly conn. */ + application_t *app; + quic_ctx_t *ctx = NULL; + svm_fifo_t *f; + u32 max_deq; + u32 app_index = udp_session->opaque; + u64 udp_session_handle = session_handle (udp_session); + int rv = 0; + app = application_get_if_valid (app_index); + u32 thread_index = vlib_get_thread_index (); + quic_rx_packet_ctx_t packets_ctx[16]; - f = udp_session->rx_fifo; + if (!app) + { + QUIC_DBG (1, "Got RX on detached app"); + /* TODO: close this session, cleanup state? */ + return 1; + } do { - conn = NULL; + udp_session = session_get_from_handle (udp_session_handle); /* session alloc might have happened */ + f = udp_session->rx_fifo; max_deq = svm_fifo_max_dequeue (f); - if (max_deq < sizeof (session_dgram_hdr_t)) + if (max_deq == 0) { - 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); + u32 fifo_offset = 0; + u32 max_packets = 16; + for (int i = 0; i < max_packets; i++) + { + quic_process_one_rx_packet (udp_session_handle, + (quicly_context_t *) app->quicly_ctx, f, + &fifo_offset, &max_packets, i, + &packets_ctx[i]); + } - plen = - quicly_decode_packet ((quicly_context_t *) app->quicly_ctx, &packet, - data, len); - if (plen != SIZE_MAX) + for (int i = 0; i < max_packets; i++) { - 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, - udp_session_handle, lctx_index, - sa, salen, packet); - else if (((quicly_context_t *) app->quicly_ctx)->encrypt_cid) - quic_reset_connection ((quicly_context_t *) app->quicly_ctx, - udp_session_handle, sa, salen, packet); + if (packets_ctx[i].thread_index != thread_index) + continue; + + check_quic_client_connected (&packets_ctx[i]); + ctx = + quic_ctx_get (packets_ctx[i].ctx_index, + packets_ctx[i].thread_index); + quic_send_packets (ctx); } - svm_fifo_dequeue_drop (f, - ph.data_length + ph.data_offset + - SESSION_CONN_HDR_LEN); + svm_fifo_dequeue_drop (f, fifo_offset); } while (1); - return 0; + return rv; } always_inline void @@ -1625,13 +2070,9 @@ quic_common_get_transport_endpoint (quic_ctx_t * ctx, transport_endpoint_t * tep, u8 is_lcl) { session_t *udp_session; - QUIC_DBG (2, "Called quic_get_transport_endpoint"); - if (ctx->c_quic_ctx_id.is_stream) - tep->is_ip4 = 255; /* well this is ugly */ - else + if (!quic_ctx_is_stream (ctx)) { - udp_session = - session_get_from_handle (ctx->c_quic_ctx_id.udp_session_handle); + udp_session = session_get_from_handle (ctx->udp_session_handle); session_get_endpoint (udp_session, tep, is_lcl); } } @@ -1641,7 +2082,15 @@ quic_get_transport_listener_endpoint (u32 listener_index, transport_endpoint_t * tep, u8 is_lcl) { quic_ctx_t *ctx; - ctx = quic_ctx_get (listener_index); + app_listener_t *app_listener; + session_t *udp_listen_session; + ctx = quic_ctx_get (listener_index, vlib_get_thread_index ()); + if (quic_ctx_is_listener (ctx)) + { + app_listener = app_listener_get_w_handle (ctx->udp_session_handle); + udp_listen_session = app_listener_get_session (app_listener); + return session_get_endpoint (udp_listen_session, tep, is_lcl); + } quic_common_get_transport_endpoint (ctx, tep, is_lcl); } @@ -1650,7 +2099,7 @@ quic_get_transport_endpoint (u32 ctx_index, u32 thread_index, transport_endpoint_t * tep, u8 is_lcl) { quic_ctx_t *ctx; - ctx = quic_ctx_get_w_thread (ctx_index, thread_index); + ctx = quic_ctx_get (ctx_index, thread_index); quic_common_get_transport_endpoint (ctx, tep, is_lcl); } @@ -1664,41 +2113,54 @@ static session_cb_vft_t quic_app_cb_vft = { .session_disconnect_callback = quic_session_disconnect_callback, .session_connected_callback = quic_session_connected_callback, .session_reset_callback = quic_session_reset_callback, + .session_migrate_callback = quic_session_migrate_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 = { +static const transport_proto_vft_t quic_proto = { .connect = quic_connect, - .close = quic_disconnect, + .close = quic_proto_on_close, .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, + .app_rx_evt = quic_custom_app_rx_callback, .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, .get_transport_endpoint = quic_get_transport_endpoint, .get_transport_listener_endpoint = quic_get_transport_listener_endpoint, + .transport_options = { + .tx_type = TRANSPORT_TX_INTERNAL, + .service_type = TRANSPORT_SERVICE_APP, + }, }; /* *INDENT-ON* */ +static void +quic_register_cipher_suite (quic_crypto_engine_t type, + ptls_cipher_suite_t ** ciphers) +{ + quic_main_t *qm = &quic_main; + vec_validate (qm->quic_ciphers, type); + qm->quic_ciphers[type] = ciphers; +} + static clib_error_t * quic_init (vlib_main_t * vm) { - QUIC_DBG (2, "Called quic_init"); - u32 add_segment_size = (4096ULL << 20) - 1, segment_size = 512 << 20; + u32 segment_size = 256 << 20; vlib_thread_main_t *vtm = vlib_get_thread_main (); + tw_timer_wheel_1t_3w_1024sl_ov_t *tw; vnet_app_attach_args_t _a, *a = &_a; u64 options[APP_OPTIONS_N_OPTIONS]; quic_main_t *qm = &quic_main; - u32 fifo_size = 64 << 10; - u32 num_threads; + u32 fifo_size = QUIC_FIFO_SIZE; + u32 num_threads, i; num_threads = 1 /* main thread */ + vtm->n_threads; @@ -1710,7 +2172,7 @@ quic_init (vlib_main_t * vm) a->options = options; a->name = format (0, "quic"); a->options[APP_OPTIONS_SEGMENT_SIZE] = segment_size; - a->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = add_segment_size; + a->options[APP_OPTIONS_ADD_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; @@ -1725,40 +2187,70 @@ quic_init (vlib_main_t * vm) 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* */ + /* Timer wheels, one per thread. */ + for (i = 0; i < num_threads; i++) + { + tw = &qm->wrk_ctx[i].timer_wheel; + tw_timer_wheel_init_1t_3w_1024sl_ov (tw, quic_expired_timers_dispatch, + 1e-3 /* timer period 1ms */ , ~0); + tw->last_run_time = vlib_time_now (vlib_get_main ()); + } + + clib_bihash_init_16_8 (&qm->connection_hash, "quic connections", 1024, + 4 << 20); - if (!qm->ca_cert_path) - qm->ca_cert_path = QUIC_DEFAULT_CA_CERT_PATH; qm->app_index = a->app_index; qm->tstamp_ticks_per_clock = vm->clib_time.seconds_per_clock / QUIC_TSTAMP_RESOLUTION; + qm->session_cache.super.cb = quic_encrypt_ticket_cb; transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto, FIB_PROTOCOL_IP4, ~0); transport_register_protocol (TRANSPORT_PROTO_QUIC, &quic_proto, FIB_PROTOCOL_IP6, ~0); + quic_register_cipher_suite (CRYPTO_ENGINE_VPP, vpp_crypto_cipher_suites); + quic_register_cipher_suite (CRYPTO_ENGINE_PICOTLS, + ptls_openssl_cipher_suites); + qm->default_cipher = CRYPTO_ENGINE_PICOTLS; vec_free (a->name); return 0; } VLIB_INIT_FUNCTION (quic_init); +static clib_error_t * +quic_plugin_crypto_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + quic_main_t *qm = &quic_main; + if (unformat_check_input (input) == UNFORMAT_END_OF_INPUT) + return clib_error_return (0, "unknown input '%U'", + format_unformat_error, input); + if (unformat (input, "vpp")) + qm->default_cipher = CRYPTO_ENGINE_VPP; + else if (unformat (input, "picotls")) + qm->default_cipher = CRYPTO_ENGINE_PICOTLS; + else + return clib_error_return (0, "unknown input '%U'", + format_unformat_error, input); + return 0; +} + /* *INDENT-OFF* */ +VLIB_CLI_COMMAND(quic_plugin_crypto_command, static)= +{ + .path = "quic set crypto api", + .short_help = "quic set crypto api [picotls, vpp]", + .function = quic_plugin_crypto_command_fn, +}; VLIB_PLUGIN_REGISTER () = { .version = VPP_BUILD_VER, .description = "Quic transport protocol", + .default_disabled = 1, }; /* *INDENT-ON* */