/* * Copyright (c) 2015-2017 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include #include #include #include /* define message IDs */ #include /* define message structures */ #define vl_typedefs #include #undef vl_typedefs /* define generated endian-swappers */ #define vl_endianfun #include #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) #define vl_printfun #include #undef vl_printfun typedef struct { /* * Server app parameters */ unix_shared_memory_queue_t **vpp_queue; unix_shared_memory_queue_t *vl_input_queue; /**< Sever's event queue */ u32 app_index; /**< Server app index */ u32 my_client_index; /**< API client handle */ u32 node_index; /**< process node index for evnt scheduling */ /* * Config params */ u8 no_echo; /**< Don't echo traffic */ u32 fifo_size; /**< Fifo size */ u32 rcv_buffer_size; /**< Rcv buffer size */ u32 prealloc_fifos; /**< Preallocate fifos */ u32 private_segment_count; /**< Number of private segments */ u32 private_segment_size; /**< Size of private segments */ /* * Test state */ u8 **rx_buf; /**< Per-thread RX buffer */ u64 byte_index; u32 **rx_retries; vlib_main_t *vlib_main; } builtin_server_main_t; builtin_server_main_t builtin_server_main; int builtin_session_accept_callback (stream_session_t * s) { builtin_server_main_t *bsm = &builtin_server_main; bsm->vpp_queue[s->thread_index] = session_manager_get_vpp_event_queue (s->thread_index); s->session_state = SESSION_STATE_READY; bsm->byte_index = 0; vec_validate (bsm->rx_retries[s->thread_index], s->session_index); bsm->rx_retries[s->thread_index][s->session_index] = 0; return 0; } void builtin_session_disconnect_callback (stream_session_t * s) { builtin_server_main_t *bsm = &builtin_server_main; vnet_disconnect_args_t _a, *a = &_a; a->handle = stream_session_handle (s); a->app_index = bsm->app_index; vnet_disconnect_session (a); } void builtin_session_reset_callback (stream_session_t * s) { clib_warning ("Reset session %U", format_stream_session, s, 2); stream_session_cleanup (s); } int builtin_session_connected_callback (u32 app_index, u32 api_context, stream_session_t * s, u8 is_fail) { clib_warning ("called..."); return -1; } int builtin_add_segment_callback (u32 client_index, const u8 * seg_name, u32 seg_size) { clib_warning ("called..."); return -1; } int builtin_redirect_connect_callback (u32 client_index, void *mp) { clib_warning ("called..."); return -1; } void test_bytes (builtin_server_main_t * bsm, int actual_transfer) { int i; u32 my_thread_id = vlib_get_thread_index (); for (i = 0; i < actual_transfer; i++) { if (bsm->rx_buf[my_thread_id][i] != ((bsm->byte_index + i) & 0xff)) { clib_warning ("at %lld expected %d got %d", bsm->byte_index + i, (bsm->byte_index + i) & 0xff, bsm->rx_buf[my_thread_id][i]); } } bsm->byte_index += actual_transfer; } /* * If no-echo, just read the data and be done with it */ int builtin_server_rx_callback_no_echo (stream_session_t * s) { builtin_server_main_t *bsm = &builtin_server_main; u32 my_thread_id = vlib_get_thread_index (); int actual_transfer; svm_fifo_t *rx_fifo; rx_fifo = s->server_rx_fifo; do { actual_transfer = svm_fifo_dequeue_nowait (rx_fifo, bsm->rcv_buffer_size, bsm->rx_buf[my_thread_id]); } while (actual_transfer > 0); return 0; } int builtin_server_rx_callback (stream_session_t * s) { u32 n_written, max_dequeue, max_enqueue, max_transfer; int actual_transfer; svm_fifo_t *tx_fifo, *rx_fifo; builtin_server_main_t *bsm = &builtin_server_main; session_fifo_event_t evt; static int serial_number = 0; u32 thread_index = vlib_get_thread_index (); ASSERT (s->thread_index == thread_index); rx_fifo = s->server_rx_fifo; tx_fifo = s->server_tx_fifo; ASSERT (rx_fifo->master_thread_index == thread_index); ASSERT (tx_fifo->master_thread_index == thread_index); max_dequeue = svm_fifo_max_dequeue (s->server_rx_fifo); max_enqueue = svm_fifo_max_enqueue (s->server_tx_fifo); if (PREDICT_FALSE (max_dequeue == 0)) return 0; /* Number of bytes we're going to copy */ max_transfer = (max_dequeue < max_enqueue) ? max_dequeue : max_enqueue; /* No space in tx fifo */ if (PREDICT_FALSE (max_transfer == 0)) { /* XXX timeout for session that are stuck */ rx_event: /* Program self-tap to retry */ if (svm_fifo_set_event (rx_fifo)) { unix_shared_memory_queue_t *q; evt.fifo = rx_fifo; evt.event_type = FIFO_EVENT_BUILTIN_RX; evt.event_id = 0; q = bsm->vpp_queue[thread_index]; if (PREDICT_FALSE (q->cursize == q->maxsize)) clib_warning ("out of event queue space"); else if (unix_shared_memory_queue_add (q, (u8 *) & evt, 0 /* don't wait for mutex */ )) clib_warning ("failed to enqueue self-tap"); bsm->rx_retries[thread_index][s->session_index]++; if (bsm->rx_retries[thread_index][s->session_index] == 500000) { clib_warning ("session stuck: %U", format_stream_session, s, 2); } } return 0; } _vec_len (bsm->rx_buf[thread_index]) = max_transfer; actual_transfer = svm_fifo_dequeue_nowait (rx_fifo, max_transfer, bsm->rx_buf[thread_index]); ASSERT (actual_transfer == max_transfer); // test_bytes (bsm, actual_transfer); /* * Echo back */ n_written = svm_fifo_enqueue_nowait (tx_fifo, actual_transfer, bsm->rx_buf[thread_index]); if (n_written != max_transfer) clib_warning ("short trout!"); if (svm_fifo_set_event (tx_fifo)) { /* Fabricate TX event, send to vpp */ evt.fifo = tx_fifo; evt.event_type = FIFO_EVENT_APP_TX; evt.event_id = serial_number++; if (unix_shared_memory_queue_add (bsm->vpp_queue[s->thread_index], (u8 *) & evt, 0 /* do wait for mutex */ )) clib_warning ("failed to enqueue tx evt"); } if (PREDICT_FALSE (n_written < max_dequeue)) goto rx_event; return 0; } static session_cb_vft_t builtin_session_cb_vft = { .session_accept_callback = builtin_session_accept_callback, .session_disconnect_callback = builtin_session_disconnect_callback, .session_connected_callback = builtin_session_connected_callback, .add_segment_callback = builtin_add_segment_callback, .redirect_connect_callback = builtin_redirect_connect_callback, .builtin_server_rx_callback = builtin_server_rx_callback, .session_reset_callback = builtin_session_reset_callback }; /* Abuse VPP's input queue */ static int create_api_loopback (vlib_main_t * vm) { builtin_server_main_t *bsm = &builtin_server_main; vl_api_memclnt_create_t _m, *mp = &_m; extern void vl_api_memclnt_create_t_handler (vl_api_memclnt_create_t *); api_main_t *am = &api_main; vl_shmem_hdr_t *shmem_hdr; uword *event_data = 0, event_type; int resolved = 0; /* * Create a "loopback" API client connection * Don't do things like this unless you know what you're doing... */ shmem_hdr = am->shmem_hdr; bsm->vl_input_queue = shmem_hdr->vl_input_queue; memset (mp, 0, sizeof (*mp)); mp->_vl_msg_id = VL_API_MEMCLNT_CREATE; mp->context = 0xFEEDFACE; mp->input_queue = pointer_to_uword (bsm->vl_input_queue); strncpy ((char *) mp->name, "tcp_test_server", sizeof (mp->name) - 1); vl_api_memclnt_create_t_handler (mp); /* Wait for reply */ bsm->node_index = vlib_get_current_process (vm)->node_runtime.node_index; vlib_process_wait_for_event_or_clock (vm, 1.0); event_type = vlib_process_get_events (vm, &event_data); switch (event_type) { case 1: resolved = 1; break; case ~0: /* timed out */ break; default: clib_warning ("unknown event_type %d", event_type); } if (!resolved) return -1; return 0; } static int server_attach () { builtin_server_main_t *bsm = &builtin_server_main; u8 segment_name[128]; u64 options[SESSION_OPTIONS_N_OPTIONS]; vnet_app_attach_args_t _a, *a = &_a; memset (a, 0, sizeof (*a)); memset (options, 0, sizeof (options)); if (bsm->no_echo) builtin_session_cb_vft.builtin_server_rx_callback = builtin_server_rx_callback_no_echo; else builtin_session_cb_vft.builtin_server_rx_callback = builtin_server_rx_callback; a->api_client_index = bsm->my_client_index; a->session_cb_vft = &builtin_session_cb_vft; a->options = options; a->options[SESSION_OPTIONS_SEGMENT_SIZE] = 512 << 20; a->options[SESSION_OPTIONS_RX_FIFO_SIZE] = bsm->fifo_size; a->options[SESSION_OPTIONS_TX_FIFO_SIZE] = bsm->fifo_size; a->options[APP_OPTIONS_PRIVATE_SEGMENT_COUNT] = bsm->private_segment_count; a->options[APP_OPTIONS_PRIVATE_SEGMENT_SIZE] = bsm->private_segment_size; a->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = bsm->prealloc_fifos ? bsm->prealloc_fifos : 1; a->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_BUILTIN_APP; a->segment_name = segment_name; a->segment_name_length = ARRAY_LEN (segment_name); if (vnet_application_attach (a)) { clib_warning ("failed to attach server"); return -1; } bsm->app_index = a->app_index; return 0; } static int server_listen () { builtin_server_main_t *bsm = &builtin_server_main; vnet_bind_args_t _a, *a = &_a; memset (a, 0, sizeof (*a)); a->app_index = bsm->app_index; a->uri = "tcp://0.0.0.0/1234"; return vnet_bind_uri (a); } static int server_create (vlib_main_t * vm) { builtin_server_main_t *bsm = &builtin_server_main; vlib_thread_main_t *vtm = vlib_get_thread_main (); u32 num_threads; int i; if (bsm->my_client_index == (u32) ~ 0) { if (create_api_loopback (vm)) { clib_warning ("failed to create api loopback"); return -1; } } num_threads = 1 /* main thread */ + vtm->n_threads; vec_validate (builtin_server_main.vpp_queue, num_threads - 1); vec_validate (bsm->rx_buf, num_threads - 1); vec_validate (bsm->rx_retries, num_threads - 1); for (i = 0; i < num_threads; i++) vec_validate (bsm->rx_buf[i], bsm->rcv_buffer_size); if (server_attach ()) { clib_warning ("failed to attach server"); return -1; } if (server_listen ()) { clib_warning ("failed to start listening"); return -1; } return 0; } /* Get our api client index */ static void vl_api_memclnt_create_reply_t_handler (vl_api_memclnt_create_reply_t * mp) { vlib_main_t *vm = vlib_get_main (); builtin_server_main_t *bsm = &builtin_server_main; bsm->my_client_index = mp->index; vlib_process_signal_event (vm, bsm->node_index, 1 /* evt */ , 0 /* data */ ); } #define foreach_tcp_builtin_server_api_msg \ _(MEMCLNT_CREATE_REPLY, memclnt_create_reply) \ static clib_error_t * tcp_builtin_server_api_hookup (vlib_main_t * vm) { vl_msg_api_msg_config_t _c, *c = &_c; /* Hook up client-side static APIs to our handlers */ #define _(N,n) do { \ c->id = VL_API_##N; \ c->name = #n; \ c->handler = vl_api_##n##_t_handler; \ c->cleanup = vl_noop_handler; \ c->endian = vl_api_##n##_t_endian; \ c->print = vl_api_##n##_t_print; \ c->size = sizeof(vl_api_##n##_t); \ c->traced = 1; /* trace, so these msgs print */ \ c->replay = 0; /* don't replay client create/delete msgs */ \ c->message_bounce = 0; /* don't bounce this message */ \ vl_msg_api_config(c);} while (0); foreach_tcp_builtin_server_api_msg; #undef _ return 0; } static clib_error_t * server_create_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { builtin_server_main_t *bsm = &builtin_server_main; int rv; u32 tmp; bsm->no_echo = 0; bsm->fifo_size = 64 << 10; bsm->rcv_buffer_size = 128 << 10; bsm->prealloc_fifos = 0; bsm->private_segment_count = 0; bsm->private_segment_size = 0; while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "no-echo")) bsm->no_echo = 1; else if (unformat (input, "fifo-size %d", &bsm->fifo_size)) bsm->fifo_size <<= 10; else if (unformat (input, "rcv-buf-size %d", &bsm->rcv_buffer_size)) ; else if (unformat (input, "prealloc-fifos %d", &bsm->prealloc_fifos)) ; else if (unformat (input, "private-segment-count %d", &bsm->private_segment_count)) ; else if (unformat (input, "private-segment-size %dm", &tmp)) bsm->private_segment_size = tmp << 20; else if (unformat (input, "private-segment-size %dg", &tmp)) bsm->private_segment_size = tmp << 30; else if (unformat (input, "private-segment-size %d", &tmp)) bsm->private_segment_size = tmp; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } tcp_builtin_server_api_hookup (vm); vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ ); rv = server_create (vm); switch (rv) { case 0: break; default: return clib_error_return (0, "server_create returned %d", rv); } return 0; } /* *INDENT-OFF* */ VLIB_CLI_COMMAND (server_create_command, static) = { .path = "test tcp server", .short_help = "test tcp server", .function = server_create_command_fn, }; /* *INDENT-ON* */ clib_error_t * builtin_tcp_server_main_init (vlib_main_t * vm) { builtin_server_main_t *bsm = &builtin_server_main; bsm->my_client_index = ~0; return 0; } VLIB_INIT_FUNCTION (builtin_tcp_server_main_init); /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */