/* * Copyright (c) 2016 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 #include #include #define vl_typedefs /* define message structures */ #include #undef vl_typedefs /* declare message handlers for each api */ #define vl_endianfun /* define message structures */ #include #undef vl_endianfun /* instantiate all the print functions we know about */ #define vl_print(handle, ...) #define vl_printfun #include #undef vl_printfun #define TCP_ECHO_DBG 0 #define DBG(_fmt,_args...) \ if (TCP_ECHO_DBG) \ clib_warning (_fmt, _args) typedef struct { CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); #define _(type, name) type name; foreach_app_session_field #undef _ u64 vpp_session_handle; u64 bytes_sent; u64 bytes_to_send; volatile u64 bytes_received; volatile u64 bytes_to_receive; f64 start; } echo_session_t; typedef enum { STATE_START, STATE_ATTACHED, STATE_LISTEN, STATE_READY, STATE_DISCONNECTING, STATE_FAILED, STATE_DETACHED } connection_state_t; typedef struct { /* vpe input queue */ svm_queue_t *vl_input_queue; /* API client handle */ u32 my_client_index; /* The URI we're playing with */ u8 *uri; /* Session pool */ echo_session_t *sessions; /* Hash table for disconnect processing */ uword *session_index_by_vpp_handles; /* intermediate rx buffer */ u8 *rx_buf; /* URI for slave's connect */ u8 *connect_uri; u32 connected_session_index; int i_am_master; /* drop all packets */ int no_return; /* Our event queue */ svm_msg_q_t *our_event_queue; u8 *socket_name; pid_t my_pid; /* For deadman timers */ clib_time_t clib_time; /* State of the connection, shared between msg RX thread and main thread */ volatile connection_state_t state; /* Signal variables */ volatile int time_to_stop; volatile int time_to_print_stats; u32 configured_segment_size; /* VNET_API_ERROR_FOO -> "Foo" hash table */ uword *error_string_by_error_number; u8 *connect_test_data; pthread_t *client_thread_handles; u32 *thread_args; u32 client_bytes_received; u8 test_return_packets; u64 bytes_to_send; u32 fifo_size; u32 n_clients; u64 tx_total; u64 rx_total; volatile u32 n_clients_connected; volatile u32 n_active_clients; /** Flag that decides if socket, instead of svm, api is used to connect to * vpp. If sock api is used, shm binary api is subsequently bootstrapped * and all other messages are exchanged using shm IPC. */ u8 use_sock_api; svm_fifo_segment_main_t segment_main; } echo_main_t; echo_main_t echo_main; #if CLIB_DEBUG > 0 #define NITER 10000 #else #define NITER 4000000 #endif static u8 * format_api_error (u8 * s, va_list * args) { echo_main_t *em = &echo_main; i32 error = va_arg (*args, u32); uword *p; p = hash_get (em->error_string_by_error_number, -error); if (p) s = format (s, "%s", p[0]); else s = format (s, "%d", error); return s; } static void init_error_string_table (echo_main_t * em) { em->error_string_by_error_number = hash_create (0, sizeof (uword)); #define _(n,v,s) hash_set (em->error_string_by_error_number, -v, s); foreach_vnet_api_error; #undef _ hash_set (em->error_string_by_error_number, 99, "Misc"); } static void handle_mq_event (session_event_t * e); static int wait_for_state_change (echo_main_t * em, connection_state_t state) { svm_msg_q_msg_t msg; session_event_t *e; f64 timeout; #if CLIB_DEBUG > 0 #define TIMEOUT 600.0 #else #define TIMEOUT 600.0 #endif timeout = clib_time_now (&em->clib_time) + TIMEOUT; while (clib_time_now (&em->clib_time) < timeout) { if (em->state == state) return 0; if (em->state == STATE_FAILED) return -1; if (em->time_to_stop == 1) return 0; if (!em->our_event_queue || em->state < STATE_ATTACHED) continue; if (svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_NOWAIT, 0)) continue; e = svm_msg_q_msg_data (em->our_event_queue, &msg); handle_mq_event (e); svm_msg_q_free_msg (em->our_event_queue, &msg); } clib_warning ("timeout waiting for state %d", state); return -1; } void application_send_attach (echo_main_t * em) { vl_api_application_attach_t *bmp; vl_api_application_tls_cert_add_t *cert_mp; vl_api_application_tls_key_add_t *key_mp; bmp = vl_msg_api_alloc (sizeof (*bmp)); clib_memset (bmp, 0, sizeof (*bmp)); bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_ATTACH); bmp->client_index = em->my_client_index; bmp->context = ntohl (0xfeedface); bmp->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_ACCEPT_REDIRECT; bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_ADD_SEGMENT; bmp->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = 16; bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = em->fifo_size; bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = em->fifo_size; bmp->options[APP_OPTIONS_ADD_SEGMENT_SIZE] = 128 << 20; bmp->options[APP_OPTIONS_SEGMENT_SIZE] = 256 << 20; bmp->options[APP_OPTIONS_EVT_QUEUE_SIZE] = 256; vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & bmp); cert_mp = vl_msg_api_alloc (sizeof (*cert_mp) + test_srv_crt_rsa_len); clib_memset (cert_mp, 0, sizeof (*cert_mp)); cert_mp->_vl_msg_id = ntohs (VL_API_APPLICATION_TLS_CERT_ADD); cert_mp->client_index = em->my_client_index; cert_mp->context = ntohl (0xfeedface); cert_mp->cert_len = clib_host_to_net_u16 (test_srv_crt_rsa_len); clib_memcpy_fast (cert_mp->cert, test_srv_crt_rsa, test_srv_crt_rsa_len); vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & cert_mp); key_mp = vl_msg_api_alloc (sizeof (*key_mp) + test_srv_key_rsa_len); clib_memset (key_mp, 0, sizeof (*key_mp) + test_srv_key_rsa_len); key_mp->_vl_msg_id = ntohs (VL_API_APPLICATION_TLS_KEY_ADD); key_mp->client_index = em->my_client_index; key_mp->context = ntohl (0xfeedface); key_mp->key_len = clib_host_to_net_u16 (test_srv_key_rsa_len); clib_memcpy_fast (key_mp->key, test_srv_key_rsa, test_srv_key_rsa_len); vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & key_mp); } static int application_attach (echo_main_t * em) { application_send_attach (em); if (wait_for_state_change (em, STATE_ATTACHED)) { clib_warning ("timeout waiting for STATE_ATTACHED"); return -1; } return 0; } void application_detach (echo_main_t * em) { vl_api_application_detach_t *bmp; bmp = vl_msg_api_alloc (sizeof (*bmp)); clib_memset (bmp, 0, sizeof (*bmp)); bmp->_vl_msg_id = ntohs (VL_API_APPLICATION_DETACH); bmp->client_index = em->my_client_index; bmp->context = ntohl (0xfeedface); vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & bmp); DBG ("%s", "Sent detach"); } static int ssvm_segment_attach (char *name, ssvm_segment_type_t type, int fd) { svm_fifo_segment_create_args_t _a, *a = &_a; svm_fifo_segment_main_t *sm = &echo_main.segment_main; int rv; clib_memset (a, 0, sizeof (*a)); a->segment_name = (char *) name; a->segment_type = type; if (type == SSVM_SEGMENT_MEMFD) a->memfd_fd = fd; if ((rv = svm_fifo_segment_attach (sm, a))) { clib_warning ("svm_fifo_segment_attach ('%s') failed", name); return rv; } vec_reset_length (a->new_segment_indices); return 0; } static void vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t * mp) { echo_main_t *em = &echo_main; int *fds = 0; u32 n_fds = 0; if (mp->retval) { clib_warning ("attach failed: %U", format_api_error, clib_net_to_host_u32 (mp->retval)); goto failed; } if (mp->segment_name_length == 0) { clib_warning ("segment_name_length zero"); goto failed; } ASSERT (mp->app_event_queue_address); em->our_event_queue = uword_to_pointer (mp->app_event_queue_address, svm_msg_q_t *); if (mp->n_fds) { vec_validate (fds, mp->n_fds); vl_socket_client_recv_fd_msg (fds, mp->n_fds, 5); if (mp->fd_flags & SESSION_FD_F_VPP_MQ_SEGMENT) if (ssvm_segment_attach (0, SSVM_SEGMENT_MEMFD, fds[n_fds++])) goto failed; if (mp->fd_flags & SESSION_FD_F_MEMFD_SEGMENT) if (ssvm_segment_attach ((char *) mp->segment_name, SSVM_SEGMENT_MEMFD, fds[n_fds++])) goto failed; if (mp->fd_flags & SESSION_FD_F_MQ_EVENTFD) svm_msg_q_set_consumer_eventfd (em->our_event_queue, fds[n_fds++]); vec_free (fds); } else { if (ssvm_segment_attach ((char *) mp->segment_name, SSVM_SEGMENT_SHM, -1)) goto failed; } em->state = STATE_ATTACHED; return; failed: em->state = STATE_FAILED; return; } static void vl_api_application_detach_reply_t_handler (vl_api_application_detach_reply_t * mp) { if (mp->retval) clib_warning ("detach returned with err: %d", mp->retval); echo_main.state = STATE_DETACHED; } static void stop_signal (int signum) { echo_main_t *um = &echo_main; um->time_to_stop = 1; } static void stats_signal (int signum) { echo_main_t *um = &echo_main; um->time_to_print_stats = 1; } static clib_error_t * setup_signal_handlers (void) { signal (SIGINT, stats_signal); signal (SIGQUIT, stop_signal); signal (SIGTERM, stop_signal); return 0; } void vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...) { clib_warning ("BUG"); } int connect_to_vpp (char *name) { echo_main_t *em = &echo_main; api_main_t *am = &api_main; if (em->use_sock_api) { if (vl_socket_client_connect ((char *) em->socket_name, name, 0 /* default rx, tx buffer */ )) { clib_warning ("socket connect failed"); return -1; } if (vl_socket_client_init_shm (0, 1 /* want_pthread */ )) { clib_warning ("init shm api failed"); return -1; } } else { if (vl_client_connect_to_vlib ("/vpe-api", name, 32) < 0) { clib_warning ("shmem connect failed"); return -1; } } em->vl_input_queue = am->shmem_hdr->vl_input_queue; em->my_client_index = am->my_client_index; return 0; } void disconnect_from_vpp (echo_main_t * em) { if (em->use_sock_api) vl_socket_client_disconnect (); else vl_client_disconnect_from_vlib (); } static void vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp) { svm_fifo_segment_main_t *sm = &echo_main.segment_main; svm_fifo_segment_create_args_t _a, *a = &_a; int rv; clib_memset (a, 0, sizeof (*a)); a->segment_name = (char *) mp->segment_name; a->segment_size = mp->segment_size; /* Attach to the segment vpp created */ rv = svm_fifo_segment_attach (sm, a); if (rv) { clib_warning ("svm_fifo_segment_attach ('%s') failed", mp->segment_name); return; } clib_warning ("Mapped new segment '%s' size %d", mp->segment_name, mp->segment_size); } static void session_print_stats (echo_main_t * em, echo_session_t * session) { f64 deltat; u64 bytes; deltat = clib_time_now (&em->clib_time) - session->start; bytes = em->i_am_master ? session->bytes_received : em->bytes_to_send; fformat (stdout, "Finished in %.6f\n", deltat); fformat (stdout, "%.4f Gbit/second\n", (bytes * 8.0) / deltat / 1e9); } static void test_recv_bytes (echo_session_t * s, u8 * rx_buf, u32 n_read) { int i; for (i = 0; i < n_read; i++) { if (rx_buf[i] != ((s->bytes_received + i) & 0xff)) { clib_warning ("error at byte %lld, 0x%x not 0x%x", s->bytes_received + i, rx_buf[i], ((s->bytes_received + i) & 0xff)); } } } static void recv_data_chunk (echo_main_t * em, echo_session_t * s, u8 * rx_buf) { int n_to_read, n_read; n_to_read = svm_fifo_max_dequeue_cons (s->rx_fifo); if (!n_to_read) return; do { n_read = app_recv_stream ((app_session_t *) s, rx_buf, vec_len (rx_buf)); if (n_read > 0) { if (em->test_return_packets) test_recv_bytes (s, rx_buf, n_read); n_to_read -= n_read; s->bytes_received += n_read; s->bytes_to_receive -= n_read; } else break; } while (n_to_read > 0); } static void send_data_chunk (echo_main_t * em, echo_session_t * s) { u64 test_buf_len, bytes_this_chunk, test_buf_offset; u8 *test_data = em->connect_test_data; int n_sent; test_buf_len = vec_len (test_data); test_buf_offset = s->bytes_sent % test_buf_len; bytes_this_chunk = clib_min (test_buf_len - test_buf_offset, s->bytes_to_send); n_sent = app_send_stream ((app_session_t *) s, test_data + test_buf_offset, bytes_this_chunk, 0); if (n_sent > 0) { s->bytes_to_send -= n_sent; s->bytes_sent += n_sent; } } /* * Rx/Tx polling thread per connection */ static void * client_thread_fn (void *arg) { echo_main_t *em = &echo_main; static u8 *rx_buf = 0; u32 session_index = *(u32 *) arg; echo_session_t *s; vec_validate (rx_buf, 1 << 20); while (!em->time_to_stop && em->state != STATE_READY) ; s = pool_elt_at_index (em->sessions, session_index); while (!em->time_to_stop) { send_data_chunk (em, s); recv_data_chunk (em, s, rx_buf); if (!s->bytes_to_send && !s->bytes_to_receive) break; } DBG ("session %d done", session_index); em->tx_total += s->bytes_sent; em->rx_total += s->bytes_received; em->n_active_clients--; pthread_exit (0); } void client_send_connect (echo_main_t * em) { vl_api_connect_uri_t *cmp; cmp = vl_msg_api_alloc (sizeof (*cmp)); clib_memset (cmp, 0, sizeof (*cmp)); cmp->_vl_msg_id = ntohs (VL_API_CONNECT_URI); cmp->client_index = em->my_client_index; cmp->context = ntohl (0xfeedface); memcpy (cmp->uri, em->connect_uri, vec_len (em->connect_uri)); vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & cmp); } void client_send_disconnect (echo_main_t * em, echo_session_t * s) { vl_api_disconnect_session_t *dmp; dmp = vl_msg_api_alloc (sizeof (*dmp)); clib_memset (dmp, 0, sizeof (*dmp)); dmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION); dmp->client_index = em->my_client_index; dmp->handle = s->vpp_session_handle; vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & dmp); } int client_disconnect (echo_main_t * em, echo_session_t * s) { client_send_disconnect (em, s); pool_put (em->sessions, s); clib_memset (s, 0xfe, sizeof (*s)); return 0; } static void session_bound_handler (session_bound_msg_t * mp) { echo_main_t *em = &echo_main; if (mp->retval) { clib_warning ("bind failed: %U", format_api_error, clib_net_to_host_u32 (mp->retval)); em->state = STATE_FAILED; return; } clib_warning ("listening on %U:%u", format_ip46_address, mp->lcl_ip, mp->lcl_is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, mp->lcl_port); em->state = STATE_READY; } static void session_accepted_handler (session_accepted_msg_t * mp) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_accepted_reply_msg_t *rmp; svm_fifo_t *rx_fifo, *tx_fifo; echo_main_t *em = &echo_main; echo_session_t *session; static f64 start_time; u32 session_index; u8 *ip_str; if (start_time == 0.0) start_time = clib_time_now (&em->clib_time); ip_str = format (0, "%U", format_ip46_address, &mp->ip, mp->is_ip4); clib_warning ("Accepted session from: %s:%d", ip_str, clib_net_to_host_u16 (mp->port)); /* Allocate local session and set it up */ pool_get (em->sessions, session); session_index = session - em->sessions; rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); rx_fifo->client_session_index = session_index; tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); tx_fifo->client_session_index = session_index; session->rx_fifo = rx_fifo; session->tx_fifo = tx_fifo; session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *); /* Add it to lookup table */ hash_set (em->session_index_by_vpp_handles, mp->handle, session_index); em->state = STATE_READY; /* Stats printing */ if (pool_elts (em->sessions) && (pool_elts (em->sessions) % 20000) == 0) { f64 now = clib_time_now (&em->clib_time); fformat (stdout, "%d active sessions in %.2f seconds, %.2f/sec...\n", pool_elts (em->sessions), now - start_time, (f64) pool_elts (em->sessions) / (now - start_time)); } /* * Send accept reply to vpp */ app_alloc_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY); rmp = (session_accepted_reply_msg_t *) app_evt->evt->data; rmp->handle = mp->handle; rmp->context = mp->context; app_send_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt); session->bytes_received = 0; session->start = clib_time_now (&em->clib_time); } static void session_connected_handler (session_connected_msg_t * mp) { echo_main_t *em = &echo_main; echo_session_t *session; u32 session_index; svm_fifo_t *rx_fifo, *tx_fifo; int rv; if (mp->retval) { clib_warning ("connection failed with code: %U", format_api_error, clib_net_to_host_u32 (mp->retval)); em->state = STATE_FAILED; return; } /* * Setup session */ pool_get (em->sessions, session); clib_memset (session, 0, sizeof (*session)); session_index = session - em->sessions; rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); rx_fifo->client_session_index = session_index; tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); tx_fifo->client_session_index = session_index; session->rx_fifo = rx_fifo; session->tx_fifo = tx_fifo; session->vpp_session_handle = mp->handle; session->start = clib_time_now (&em->clib_time); session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *); hash_set (em->session_index_by_vpp_handles, mp->handle, session_index); /* * Start RX thread */ em->thread_args[em->n_clients_connected] = session_index; rv = pthread_create (&em->client_thread_handles[em->n_clients_connected], NULL /*attr */ , client_thread_fn, (void *) &em->thread_args[em->n_clients_connected]); if (rv) { clib_warning ("pthread_create returned %d", rv); return; } em->n_clients_connected += 1; clib_warning ("session %u (0x%llx) connected with local ip %U port %d", session_index, mp->handle, format_ip46_address, mp->lcl_ip, mp->is_ip4, clib_net_to_host_u16 (mp->lcl_port)); } static void session_disconnected_handler (session_disconnected_msg_t * mp) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_disconnected_reply_msg_t *rmp; echo_main_t *em = &echo_main; echo_session_t *session = 0; uword *p; int rv = 0; p = hash_get (em->session_index_by_vpp_handles, mp->handle); if (!p) { clib_warning ("couldn't find session key %llx", mp->handle); return; } session = pool_elt_at_index (em->sessions, p[0]); hash_unset (em->session_index_by_vpp_handles, mp->handle); pool_put (em->sessions, session); app_alloc_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt, SESSION_CTRL_EVT_DISCONNECTED_REPLY); rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data; rmp->retval = rv; rmp->handle = mp->handle; rmp->context = mp->context; app_send_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt); session_print_stats (em, session); } static void session_reset_handler (session_reset_msg_t * mp) { app_session_evt_t _app_evt, *app_evt = &_app_evt; echo_main_t *em = &echo_main; session_reset_reply_msg_t *rmp; echo_session_t *session = 0; uword *p; int rv = 0; p = hash_get (em->session_index_by_vpp_handles, mp->handle); if (p) { session = pool_elt_at_index (em->sessions, p[0]); clib_warning ("got reset"); /* Cleanup later */ em->time_to_stop = 1; } else { clib_warning ("couldn't find session key %llx", mp->handle); return; } app_alloc_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt, SESSION_CTRL_EVT_RESET_REPLY); rmp = (session_reset_reply_msg_t *) app_evt->evt->data; rmp->retval = rv; rmp->handle = mp->handle; app_send_ctrl_evt_to_vpp (session->vpp_evt_q, app_evt); } static void handle_mq_event (session_event_t * e) { switch (e->event_type) { case SESSION_CTRL_EVT_BOUND: session_bound_handler ((session_bound_msg_t *) e->data); break; case SESSION_CTRL_EVT_ACCEPTED: session_accepted_handler ((session_accepted_msg_t *) e->data); break; case SESSION_CTRL_EVT_CONNECTED: session_connected_handler ((session_connected_msg_t *) e->data); break; case SESSION_CTRL_EVT_DISCONNECTED: session_disconnected_handler ((session_disconnected_msg_t *) e->data); break; case SESSION_CTRL_EVT_RESET: session_reset_handler ((session_reset_msg_t *) e->data); break; default: clib_warning ("unhandled %u", e->event_type); } } static void clients_run (echo_main_t * em) { f64 start_time, deltat, timeout = 100.0; svm_msg_q_msg_t msg; session_event_t *e; echo_session_t *s; int i; /* Init test data */ vec_validate (em->connect_test_data, 1024 * 1024 - 1); for (i = 0; i < vec_len (em->connect_test_data); i++) em->connect_test_data[i] = i & 0xff; /* * Attach and connect the clients */ if (application_attach (em)) return; for (i = 0; i < em->n_clients; i++) client_send_connect (em); start_time = clib_time_now (&em->clib_time); while (em->n_clients_connected < em->n_clients && (clib_time_now (&em->clib_time) - start_time < timeout) && em->state != STATE_FAILED) { svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_WAIT, 0); e = svm_msg_q_msg_data (em->our_event_queue, &msg); handle_mq_event (e); svm_msg_q_free_msg (em->our_event_queue, &msg); } if (em->n_clients_connected != em->n_clients) { clib_warning ("failed to initialize all connections"); return; } /* * Initialize connections */ for (i = 0; i < em->n_clients; i++) { s = pool_elt_at_index (em->sessions, i); s->bytes_to_send = em->bytes_to_send; if (!em->no_return) s->bytes_to_receive = em->bytes_to_send; } em->n_active_clients = em->n_clients_connected; /* * Wait for client threads to send the data */ start_time = clib_time_now (&em->clib_time); em->state = STATE_READY; while (em->n_active_clients) if (!svm_msg_q_is_empty (em->our_event_queue)) { if (svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_WAIT, 0)) { clib_warning ("svm msg q returned"); continue; } e = svm_msg_q_msg_data (em->our_event_queue, &msg); if (e->event_type != SESSION_IO_EVT_RX) handle_mq_event (e); svm_msg_q_free_msg (em->our_event_queue, &msg); } for (i = 0; i < em->n_clients; i++) { s = pool_elt_at_index (em->sessions, i); client_disconnect (em, s); } /* * Stats and detach */ deltat = clib_time_now (&em->clib_time) - start_time; fformat (stdout, "%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds\n", em->tx_total, em->tx_total / (1ULL << 20), em->tx_total / (1ULL << 30), deltat); fformat (stdout, "%.4f Gbit/second\n", (em->tx_total * 8.0) / deltat / 1e9); application_detach (em); } static void vl_api_bind_uri_reply_t_handler (vl_api_bind_uri_reply_t * mp) { echo_main_t *em = &echo_main; if (mp->retval) { clib_warning ("bind failed: %U", format_api_error, clib_net_to_host_u32 (mp->retval)); em->state = STATE_FAILED; return; } em->state = STATE_READY; } static void vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp) { echo_main_t *em = &echo_main; if (mp->retval != 0) clib_warning ("returned %d", ntohl (mp->retval)); em->state = STATE_START; } u8 * format_ip4_address (u8 * s, va_list * args) { u8 *a = va_arg (*args, u8 *); return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]); } u8 * format_ip6_address (u8 * s, va_list * args) { ip6_address_t *a = va_arg (*args, ip6_address_t *); u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon; i_max_n_zero = ARRAY_LEN (a->as_u16); max_n_zeros = 0; i_first_zero = i_max_n_zero; n_zeros = 0; for (i = 0; i < ARRAY_LEN (a->as_u16); i++) { u32 is_zero = a->as_u16[i] == 0; if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16)) { i_first_zero = i; n_zeros = 0; } n_zeros += is_zero; if ((!is_zero && n_zeros > max_n_zeros) || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros)) { i_max_n_zero = i_first_zero; max_n_zeros = n_zeros; i_first_zero = ARRAY_LEN (a->as_u16); n_zeros = 0; } } last_double_colon = 0; for (i = 0; i < ARRAY_LEN (a->as_u16); i++) { if (i == i_max_n_zero && max_n_zeros > 1) { s = format (s, "::"); i += max_n_zeros - 1; last_double_colon = 1; } else { s = format (s, "%s%x", (last_double_colon || i == 0) ? "" : ":", clib_net_to_host_u16 (a->as_u16[i])); last_double_colon = 0; } } return s; } /* Format an IP46 address. */ u8 * format_ip46_address (u8 * s, va_list * args) { ip46_address_t *ip46 = va_arg (*args, ip46_address_t *); ip46_type_t type = va_arg (*args, ip46_type_t); int is_ip4 = 1; switch (type) { case IP46_TYPE_ANY: is_ip4 = ip46_address_is_ip4 (ip46); break; case IP46_TYPE_IP4: is_ip4 = 1; break; case IP46_TYPE_IP6: is_ip4 = 0; break; } return is_ip4 ? format (s, "%U", format_ip4_address, &ip46->ip4) : format (s, "%U", format_ip6_address, &ip46->ip6); } static void server_handle_rx (echo_main_t * em, session_event_t * e) { int n_read, max_dequeue, n_sent; u32 offset, to_dequeue; echo_session_t *s; s = pool_elt_at_index (em->sessions, e->session_index); /* Clear event only once. Otherwise, if we do it in the loop by calling * app_recv_stream, we may end up with a lot of unhandled rx events on the * message queue */ svm_fifo_unset_event (s->rx_fifo); max_dequeue = svm_fifo_max_dequeue_cons (s->rx_fifo); if (PREDICT_FALSE (!max_dequeue)) return; do { /* The options here are to limit ourselves to max_dequeue or read * even the data that was enqueued while we were dequeueing and which * now has an rx event in the mq. Either of the two work. */ to_dequeue = clib_min (max_dequeue, vec_len (em->rx_buf)); n_read = app_recv_stream_raw (s->rx_fifo, em->rx_buf, to_dequeue, 0 /* clear evt */ , 0 /* peek */ ); if (n_read > 0) { max_dequeue -= n_read; s->bytes_received += n_read; } else break; /* Reflect if a non-drop session */ if (!em->no_return && n_read > 0) { offset = 0; do { n_sent = app_send_stream ((app_session_t *) s, &em->rx_buf[offset], n_read, SVM_Q_WAIT); if (n_sent > 0) { n_read -= n_sent; offset += n_sent; } } while ((n_sent <= 0 || n_read > 0) && !em->time_to_stop); } } while (max_dequeue > 0 && !em->time_to_stop); } static void server_handle_mq (echo_main_t * em) { svm_msg_q_msg_t msg; session_event_t *e; while (1) { svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_WAIT, 0); e = svm_msg_q_msg_data (em->our_event_queue, &msg); switch (e->event_type) { case SESSION_IO_EVT_RX: server_handle_rx (em, e); break; default: handle_mq_event (e); break; } if (PREDICT_FALSE (em->time_to_stop == 1)) break; if (PREDICT_FALSE (em->time_to_print_stats == 1)) { em->time_to_print_stats = 0; fformat (stdout, "%d connections\n", pool_elts (em->sessions)); } svm_msg_q_free_msg (em->our_event_queue, &msg); } } void server_send_listen (echo_main_t * em) { vl_api_bind_uri_t *bmp; bmp = vl_msg_api_alloc (sizeof (*bmp)); clib_memset (bmp, 0, sizeof (*bmp)); bmp->_vl_msg_id = ntohs (VL_API_BIND_URI); bmp->client_index = em->my_client_index; bmp->context = ntohl (0xfeedface); memcpy (bmp->uri, em->uri, vec_len (em->uri)); vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & bmp); } int server_listen (echo_main_t * em) { server_send_listen (em); if (wait_for_state_change (em, STATE_READY)) { clib_warning ("timeout waiting for STATE_READY"); return -1; } return 0; } void server_send_unbind (echo_main_t * em) { vl_api_unbind_uri_t *ump; ump = vl_msg_api_alloc (sizeof (*ump)); clib_memset (ump, 0, sizeof (*ump)); ump->_vl_msg_id = ntohs (VL_API_UNBIND_URI); ump->client_index = em->my_client_index; memcpy (ump->uri, em->uri, vec_len (em->uri)); vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & ump); } int server_unbind (echo_main_t * em) { server_send_unbind (em); if (wait_for_state_change (em, STATE_START)) { clib_warning ("timeout waiting for STATE_START"); return -1; } return 0; } void server_run (echo_main_t * em) { echo_session_t *session; int i; /* $$$$ hack preallocation */ for (i = 0; i < 200000; i++) { pool_get (em->sessions, session); clib_memset (session, 0, sizeof (*session)); } for (i = 0; i < 200000; i++) pool_put_index (em->sessions, i); if (application_attach (em)) return; /* Bind to uri */ if (server_listen (em)) return; /* Enter handle event loop */ server_handle_mq (em); /* Cleanup */ server_send_unbind (em); application_detach (em); fformat (stdout, "Test complete...\n"); } static void vl_api_disconnect_session_reply_t_handler (vl_api_disconnect_session_reply_t * mp) { echo_main_t *em = &echo_main; uword *p; if (mp->retval) { clib_warning ("vpp complained about disconnect: %d", ntohl (mp->retval)); return; } em->state = STATE_START; p = hash_get (em->session_index_by_vpp_handles, mp->handle); if (p) { hash_unset (em->session_index_by_vpp_handles, mp->handle); } else { clib_warning ("couldn't find session key %llx", mp->handle); } } static void vl_api_application_tls_cert_add_reply_t_handler (vl_api_application_tls_cert_add_reply_t * mp) { if (mp->retval) clib_warning ("failed to add tls cert"); } static void vl_api_application_tls_key_add_reply_t_handler (vl_api_application_tls_key_add_reply_t * mp) { if (mp->retval) clib_warning ("failed to add tls key"); } #define foreach_tcp_echo_msg \ _(BIND_URI_REPLY, bind_uri_reply) \ _(UNBIND_URI_REPLY, unbind_uri_reply) \ _(DISCONNECT_SESSION_REPLY, disconnect_session_reply) \ _(APPLICATION_ATTACH_REPLY, application_attach_reply) \ _(APPLICATION_DETACH_REPLY, application_detach_reply) \ _(MAP_ANOTHER_SEGMENT, map_another_segment) \ _(APPLICATION_TLS_CERT_ADD_REPLY, application_tls_cert_add_reply) \ _(APPLICATION_TLS_KEY_ADD_REPLY, application_tls_key_add_reply) \ void tcp_echo_api_hookup (echo_main_t * em) { #define _(N,n) \ vl_msg_api_set_handlers(VL_API_##N, #n, \ vl_api_##n##_t_handler, \ vl_noop_handler, \ vl_api_##n##_t_endian, \ vl_api_##n##_t_print, \ sizeof(vl_api_##n##_t), 1); foreach_tcp_echo_msg; #undef _ } int main (int argc, char **argv) { int i_am_server = 1, test_return_packets = 0; echo_main_t *em = &echo_main; svm_fifo_segment_main_t *sm = &em->segment_main; unformat_input_t _argv, *a = &_argv; u8 *chroot_prefix; u8 *uri = 0; u8 *bind_uri = (u8 *) "tcp://0.0.0.0/1234"; u8 *connect_uri = (u8 *) "tcp://6.0.1.1/1234"; u64 bytes_to_send = 64 << 10, mbytes; char *app_name; u32 tmp; clib_mem_init_thread_safe (0, 256 << 20); clib_memset (em, 0, sizeof (*em)); em->session_index_by_vpp_handles = hash_create (0, sizeof (uword)); em->my_pid = getpid (); em->configured_segment_size = 1 << 20; em->socket_name = 0; em->use_sock_api = 1; em->fifo_size = 64 << 10; em->n_clients = 1; clib_time_init (&em->clib_time); init_error_string_table (em); svm_fifo_segment_main_init (sm, HIGH_SEGMENT_BASEVA, 20); unformat_init_command_line (a, argv); while (unformat_check_input (a) != UNFORMAT_END_OF_INPUT) { if (unformat (a, "chroot prefix %s", &chroot_prefix)) { vl_set_memory_root_path ((char *) chroot_prefix); } else if (unformat (a, "uri %s", &uri)) ; else if (unformat (a, "segment-size %dM", &tmp)) em->configured_segment_size = tmp << 20; else if (unformat (a, "segment-size %dG", &tmp)) em->configured_segment_size = tmp << 30; else if (unformat (a, "server")) i_am_server = 1; else if (unformat (a, "client")) i_am_server = 0; else if (unformat (a, "no-return")) em->no_return = 1; else if (unformat (a, "test")) test_return_packets = 1; else if (unformat (a, "mbytes %lld", &mbytes)) { bytes_to_send = mbytes << 20; } else if (unformat (a, "gbytes %lld", &mbytes)) { bytes_to_send = mbytes << 30; } else if (unformat (a, "socket-name %s", &em->socket_name)) ; else if (unformat (a, "use-svm-api")) em->use_sock_api = 0; else if (unformat (a, "fifo-size %d", &tmp)) em->fifo_size = tmp << 10; else if (unformat (a, "nclients %d", &em->n_clients)) ; else { fformat (stderr, "%s: usage [master|slave]\n", argv[0]); exit (1); } } if (!em->socket_name) em->socket_name = format (0, "%s%c", API_SOCKET_FILE, 0); if (uri) { em->uri = format (0, "%s%c", uri, 0); em->connect_uri = format (0, "%s%c", uri, 0); } else { em->uri = format (0, "%s%c", bind_uri, 0); em->connect_uri = format (0, "%s%c", connect_uri, 0); } em->i_am_master = i_am_server; em->test_return_packets = test_return_packets; em->bytes_to_send = bytes_to_send; em->time_to_stop = 0; vec_validate (em->rx_buf, 4 << 20); vec_validate (em->client_thread_handles, em->n_clients - 1); vec_validate (em->thread_args, em->n_clients - 1); setup_signal_handlers (); tcp_echo_api_hookup (em); app_name = i_am_server ? "tcp_echo_server" : "tcp_echo_client"; if (connect_to_vpp (app_name) < 0) { svm_region_exit (); fformat (stderr, "Couldn't connect to vpe, exiting...\n"); exit (1); } if (i_am_server == 0) clients_run (em); else server_run (em); /* Make sure detach finishes */ wait_for_state_change (em, STATE_DETACHED); disconnect_from_vpp (em); exit (0); } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */