/* * 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 typedef struct { u8 *rx_buf; unix_shared_memory_queue_t **vpp_queue; u32 byte_index; 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; clib_warning ("called..."); 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; return 0; } void builtin_session_disconnect_callback (stream_session_t * s) { clib_warning ("called..."); vnet_disconnect_session (s->session_index, s->thread_index); } void builtin_session_reset_callback (stream_session_t * s) { clib_warning ("called.. "); stream_session_cleanup (s); } int builtin_session_connected_callback (u32 client_index, 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; for (i = 0; i < actual_transfer; i++) { if (bsm->rx_buf[i] != ((bsm->byte_index + i) & 0xff)) { clib_warning ("at %d expected %d got %d", bsm->byte_index + i, (bsm->byte_index + i) & 0xff, bsm->rx_buf[i]); } } bsm->byte_index += actual_transfer; } 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; 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; } tx_fifo = s->server_tx_fifo; rx_fifo = s->server_rx_fifo; /* 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)) { evt.fifo = rx_fifo; evt.event_type = FIFO_EVENT_BUILTIN_RX; evt.event_id = 0; unix_shared_memory_queue_add (bsm->vpp_queue[s->thread_index], (u8 *) & evt, 0 /* do wait for mutex */ ); } return 0; } svm_fifo_unset_event (rx_fifo); vec_validate (bsm->rx_buf, max_transfer - 1); _vec_len (bsm->rx_buf) = max_transfer; actual_transfer = svm_fifo_dequeue_nowait (rx_fifo, 0, max_transfer, bsm->rx_buf); ASSERT (actual_transfer == max_transfer); // test_bytes (bsm, actual_transfer); /* * Echo back */ n_written = svm_fifo_enqueue_nowait (tx_fifo, 0, actual_transfer, bsm->rx_buf); 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_SERVER_TX; evt.event_id = serial_number++; unix_shared_memory_queue_add (bsm->vpp_queue[s->thread_index], (u8 *) & evt, 0 /* do wait for mutex */ ); } if (PREDICT_FALSE (max_enqueue < 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 }; static int server_create (vlib_main_t * vm) { vnet_bind_args_t _a, *a = &_a; u64 options[SESSION_OPTIONS_N_OPTIONS]; char segment_name[128]; u32 num_threads; vlib_thread_main_t *vtm = vlib_get_thread_main (); num_threads = 1 /* main thread */ + vtm->n_threads; vec_validate (builtin_server_main.vpp_queue, num_threads - 1); memset (a, 0, sizeof (*a)); memset (options, 0, sizeof (options)); a->uri = "tcp://0.0.0.0/1234"; a->api_client_index = ~0; a->session_cb_vft = &builtin_session_cb_vft; a->options = options; a->options[SESSION_OPTIONS_SEGMENT_SIZE] = 128 << 20; a->options[SESSION_OPTIONS_RX_FIFO_SIZE] = 1 << 16; a->options[SESSION_OPTIONS_TX_FIFO_SIZE] = 1 << 16; a->segment_name = segment_name; a->segment_name_length = ARRAY_LEN (segment_name); return vnet_bind_uri (a); } static clib_error_t * server_create_command_fn (vlib_main_t * vm, unformat_input_t * input, vlib_cli_command_t * cmd) { int rv; #if 0 while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) { if (unformat (input, "whatever %d", &whatever)) ; else return clib_error_return (0, "unknown input `%U'", format_unformat_error, input); } #endif 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 server", .short_help = "test server", .function = server_create_command_fn, }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */