diff options
Diffstat (limited to 'src/plugins/hs_apps/tcp_echo.c')
| -rw-r--r-- | src/plugins/hs_apps/tcp_echo.c | 1414 |
1 files changed, 1414 insertions, 0 deletions
diff --git a/src/plugins/hs_apps/tcp_echo.c b/src/plugins/hs_apps/tcp_echo.c new file mode 100644 index 00000000000..6c3ce928490 --- /dev/null +++ b/src/plugins/hs_apps/tcp_echo.c @@ -0,0 +1,1414 @@ +/* + * 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 <stdio.h> +#include <signal.h> + +#include <vnet/session/application_interface.h> +#include <vlibmemory/api.h> + +#include <vpp/api/vpe_msg_enum.h> +#include <svm/fifo_segment.h> + +#define vl_typedefs /* define message structures */ +#include <vpp/api/vpe_all_api_h.h> +#undef vl_typedefs + +/* declare message handlers for each api */ + +#define vl_endianfun /* define message structures */ +#include <vpp/api/vpe_all_api_h.h> +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) +#define vl_printfun +#include <vpp/api/vpe_all_api_h.h> +#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; + + 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) +{ + fifo_segment_create_args_t _a, *a = &_a; + 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 = 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) +{ + fifo_segment_main_t *sm = &echo_main.segment_main; + 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 = 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->rmt.ip, mp->rmt.is_ip4); + clib_warning ("Accepted session from: %s:%d", ip_str, + clib_net_to_host_u16 (mp->rmt.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->lcl.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; + 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); + 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: + */ |