diff options
Diffstat (limited to 'src/plugins/hs_apps/udp_echo.c')
| -rw-r--r-- | src/plugins/hs_apps/udp_echo.c | 1256 |
1 files changed, 1256 insertions, 0 deletions
diff --git a/src/plugins/hs_apps/udp_echo.c b/src/plugins/hs_apps/udp_echo.c new file mode 100644 index 00000000000..c9992befe98 --- /dev/null +++ b/src/plugins/hs_apps/udp_echo.c @@ -0,0 +1,1256 @@ +/* + * 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 <setjmp.h> +#include <signal.h> +#include <vppinfra/clib.h> +#include <vppinfra/format.h> +#include <vppinfra/error.h> +#include <vppinfra/time.h> +#include <vppinfra/macros.h> +#include <vnet/vnet.h> +#include <vlib/vlib.h> +#include <vlib/unix/unix.h> +#include <vlibapi/api.h> +#include <vlibmemory/api.h> +#include <vpp/api/vpe_msg_enum.h> +#include <pthread.h> +#include <vnet/session/application_interface.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 + +typedef enum +{ + STATE_START, + STATE_ATTACHED, + STATE_BOUND, + STATE_READY, + STATE_FAILED, + STATE_DISCONNECTING, + 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 *listen_uri; + + /* URI for connect */ + u8 *connect_uri; + + /* Session pool */ + app_session_t *sessions; + + /* Hash table for disconnect processing */ + uword *session_index_by_vpp_handles; + + /* fifo segment */ + fifo_segment_t *seg; + + /* intermediate rx buffer */ + u8 *rx_buf; + + u32 fifo_size; + int i_am_server; + u8 is_connected; + + /* Our event queue */ + svm_msg_q_t *our_event_queue; + svm_msg_q_t *ct_event_queue; + + /* $$$ single thread only for the moment */ + svm_msg_q_t *vpp_event_queue; + + /* $$$$ hack: cut-through session index */ + volatile u32 cut_through_session_index; + volatile u32 connected_session; + + /* unique segment name counter */ + u32 unique_segment_index; + + pid_t my_pid; + + /* pthread handle */ + pthread_t cut_through_thread_handle; + + /* 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; + + 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; + + fifo_segment_main_t segment_main; + + u8 *connect_test_data; + + uword *segments_table; + u8 do_echo; + u8 have_return; + u64 total_to_send; + u64 bytes_to_send; + u64 bytes_sent; +} udp_echo_main_t; + +udp_echo_main_t udp_echo_main; + +static void +stop_signal (int signum) +{ + udp_echo_main_t *um = &udp_echo_main; + + um->time_to_stop = 1; +} + +static void +stats_signal (int signum) +{ + udp_echo_main_t *um = &udp_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; +} + +uword +unformat_ip4_address (unformat_input_t * input, va_list * args) +{ + u8 *result = va_arg (*args, u8 *); + unsigned a[4]; + + if (!unformat (input, "%d.%d.%d.%d", &a[0], &a[1], &a[2], &a[3])) + return 0; + + if (a[0] >= 256 || a[1] >= 256 || a[2] >= 256 || a[3] >= 256) + return 0; + + result[0] = a[0]; + result[1] = a[1]; + result[2] = a[2]; + result[3] = a[3]; + + return 1; +} + +uword +unformat_ip6_address (unformat_input_t * input, va_list * args) +{ + ip6_address_t *result = va_arg (*args, ip6_address_t *); + u16 hex_quads[8]; + uword hex_quad, n_hex_quads, hex_digit, n_hex_digits; + uword c, n_colon, double_colon_index; + + n_hex_quads = hex_quad = n_hex_digits = n_colon = 0; + double_colon_index = ARRAY_LEN (hex_quads); + while ((c = unformat_get_input (input)) != UNFORMAT_END_OF_INPUT) + { + hex_digit = 16; + if (c >= '0' && c <= '9') + hex_digit = c - '0'; + else if (c >= 'a' && c <= 'f') + hex_digit = c + 10 - 'a'; + else if (c >= 'A' && c <= 'F') + hex_digit = c + 10 - 'A'; + else if (c == ':' && n_colon < 2) + n_colon++; + else + { + unformat_put_input (input); + break; + } + + /* Too many hex quads. */ + if (n_hex_quads >= ARRAY_LEN (hex_quads)) + return 0; + + if (hex_digit < 16) + { + hex_quad = (hex_quad << 4) | hex_digit; + + /* Hex quad must fit in 16 bits. */ + if (n_hex_digits >= 4) + return 0; + + n_colon = 0; + n_hex_digits++; + } + + /* Save position of :: */ + if (n_colon == 2) + { + /* More than one :: ? */ + if (double_colon_index < ARRAY_LEN (hex_quads)) + return 0; + double_colon_index = n_hex_quads; + } + + if (n_colon > 0 && n_hex_digits > 0) + { + hex_quads[n_hex_quads++] = hex_quad; + hex_quad = 0; + n_hex_digits = 0; + } + } + + if (n_hex_digits > 0) + hex_quads[n_hex_quads++] = hex_quad; + + { + word i; + + /* Expand :: to appropriate number of zero hex quads. */ + if (double_colon_index < ARRAY_LEN (hex_quads)) + { + word n_zero = ARRAY_LEN (hex_quads) - n_hex_quads; + + for (i = n_hex_quads - 1; i >= (signed) double_colon_index; i--) + hex_quads[n_zero + i] = hex_quads[i]; + + for (i = 0; i < n_zero; i++) + hex_quads[double_colon_index + i] = 0; + + n_hex_quads = ARRAY_LEN (hex_quads); + } + + /* Too few hex quads given. */ + if (n_hex_quads < ARRAY_LEN (hex_quads)) + return 0; + + for (i = 0; i < ARRAY_LEN (hex_quads); i++) + result->as_u16[i] = clib_host_to_net_u16 (hex_quads[i]); + + return 1; + } +} + +uword +unformat_uri (unformat_input_t * input, va_list * args) +{ + session_endpoint_cfg_t *sep = va_arg (*args, session_endpoint_cfg_t *); + u32 port; + char *tmp; + + if (unformat (input, "%s://%U/%d", &tmp, unformat_ip4_address, &sep->ip.ip4, + &port)) + { + sep->port = clib_host_to_net_u16 (port); + sep->is_ip4 = 1; + return 1; + } + else if (unformat (input, "%s://%U/%d", &tmp, unformat_ip6_address, + &sep->ip.ip6, &port)) + { + sep->port = clib_host_to_net_u16 (port); + sep->is_ip4 = 0; + return 1; + } + return 0; +} + +static void +application_send_attach (udp_echo_main_t * utm) +{ + vl_api_application_attach_t *bmp; + 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 = utm->my_client_index; + bmp->context = ntohl (0xfeedface); + bmp->options[APP_OPTIONS_FLAGS] = APP_OPTIONS_FLAGS_ADD_SEGMENT; + bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE; + bmp->options[APP_OPTIONS_FLAGS] |= APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE; + bmp->options[APP_OPTIONS_PREALLOC_FIFO_PAIRS] = 2; + bmp->options[APP_OPTIONS_RX_FIFO_SIZE] = utm->fifo_size; + bmp->options[APP_OPTIONS_TX_FIFO_SIZE] = utm->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] = 16768; + vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp); +} + +void +application_detach (udp_echo_main_t * utm) +{ + 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 = utm->my_client_index; + bmp->context = ntohl (0xfeedface); + vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp); +} + +static void +vl_api_application_attach_reply_t_handler (vl_api_application_attach_reply_t * + mp) +{ + fifo_segment_create_args_t _a = { 0 }, *a = &_a; + udp_echo_main_t *utm = &udp_echo_main; + fifo_segment_main_t *sm = &utm->segment_main; + int rv; + + if (mp->retval) + { + clib_warning ("attach failed: %d", mp->retval); + utm->state = STATE_FAILED; + return; + } + + if (mp->segment_name_length == 0) + { + clib_warning ("segment_name_length zero"); + return; + } + + a->segment_name = (char *) mp->segment_name; + a->segment_size = mp->segment_size; + + ASSERT (mp->app_event_queue_address); + + /* 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; + } + + utm->our_event_queue = uword_to_pointer (mp->app_event_queue_address, + svm_msg_q_t *); + utm->state = STATE_ATTACHED; +} + +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); + udp_echo_main.state = STATE_DETACHED; +} + +u8 * +format_api_error (u8 * s, va_list * args) +{ + udp_echo_main_t *utm = va_arg (*args, udp_echo_main_t *); + i32 error = va_arg (*args, u32); + uword *p; + + p = hash_get (utm->error_string_by_error_number, -error); + + if (p) + s = format (s, "%s", p[0]); + else + s = format (s, "%d", error); + return s; +} + +int +wait_for_state_change (udp_echo_main_t * utm, connection_state_t state) +{ +#if CLIB_DEBUG > 0 +#define TIMEOUT 600.0 +#else +#define TIMEOUT 600.0 +#endif + + f64 timeout = clib_time_now (&utm->clib_time) + TIMEOUT; + + while (clib_time_now (&utm->clib_time) < timeout) + { + if (utm->state == state) + return 0; + if (utm->state == STATE_FAILED) + return -1; + } + return -1; +} + +u64 server_bytes_received, server_bytes_sent; + +__clib_unused static void * +cut_through_thread_fn (void *arg) +{ + app_session_t *s; + svm_fifo_t *rx_fifo; + svm_fifo_t *tx_fifo; + u8 *my_copy_buffer = 0; + udp_echo_main_t *utm = &udp_echo_main; + i32 actual_transfer; + int rv, do_dequeue = 0; + u32 buffer_offset; + + while (utm->cut_through_session_index == ~0) + ; + + s = pool_elt_at_index (utm->sessions, utm->cut_through_session_index); + + rx_fifo = s->rx_fifo; + tx_fifo = s->tx_fifo; + + vec_validate (my_copy_buffer, 64 * 1024 - 1); + + while (1) + { + do + { + /* We read from the tx fifo and write to the rx fifo */ + if (utm->have_return || do_dequeue) + actual_transfer = svm_fifo_dequeue (rx_fifo, + vec_len (my_copy_buffer), + my_copy_buffer); + else + { + /* We don't do anything with the data, drop it */ + actual_transfer = svm_fifo_max_dequeue_cons (rx_fifo); + svm_fifo_dequeue_drop (rx_fifo, actual_transfer); + } + } + while (actual_transfer <= 0); + + server_bytes_received += actual_transfer; + + if (utm->have_return) + { + buffer_offset = 0; + while (actual_transfer > 0) + { + rv = svm_fifo_enqueue (tx_fifo, actual_transfer, + my_copy_buffer + buffer_offset); + if (rv > 0) + { + actual_transfer -= rv; + buffer_offset += rv; + server_bytes_sent += rv; + } + + } + } + if (PREDICT_FALSE (utm->time_to_stop)) + break; + } + + pthread_exit (0); +} + +static void +session_accepted_handler (session_accepted_msg_t * mp) +{ + app_session_evt_t _app_evt, *app_evt = &_app_evt; + udp_echo_main_t *utm = &udp_echo_main; + session_accepted_reply_msg_t *rmp; + svm_fifo_t *rx_fifo, *tx_fifo; + app_session_t *session; + static f64 start_time; + u32 session_index; + int rv = 0; + + if (start_time == 0.0) + start_time = clib_time_now (&utm->clib_time); + + utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address, + svm_msg_q_t *); + rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); + tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); + + pool_get (utm->sessions, session); + clib_memset (session, 0, sizeof (*session)); + session_index = session - utm->sessions; + session->session_index = session_index; + + rx_fifo->client_session_index = session_index; + tx_fifo->client_session_index = session_index; + session->rx_fifo = rx_fifo; + session->tx_fifo = tx_fifo; + clib_memcpy_fast (&session->transport.rmt_ip, &mp->rmt.ip, + sizeof (ip46_address_t)); + session->transport.is_ip4 = mp->rmt.is_ip4; + session->transport.rmt_port = mp->rmt.port; + + hash_set (utm->session_index_by_vpp_handles, mp->handle, session_index); + if (pool_elts (utm->sessions) && (pool_elts (utm->sessions) % 20000) == 0) + { + f64 now = clib_time_now (&utm->clib_time); + fformat (stdout, "%d active sessions in %.2f seconds, %.2f/sec...\n", + pool_elts (utm->sessions), now - start_time, + (f64) pool_elts (utm->sessions) / (now - start_time)); + } + + app_alloc_ctrl_evt_to_vpp (utm->vpp_event_queue, 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; + rmp->retval = rv; + app_send_ctrl_evt_to_vpp (utm->vpp_event_queue, app_evt); + + CLIB_MEMORY_BARRIER (); + utm->state = STATE_READY; +} + +static void +session_disconnected_handler (session_disconnected_msg_t * mp) +{ + app_session_evt_t _app_evt, *app_evt = &_app_evt; + udp_echo_main_t *utm = &udp_echo_main; + session_disconnected_reply_msg_t *rmp; + app_session_t *session; + uword *p; + int rv = 0; + + p = hash_get (utm->session_index_by_vpp_handles, mp->handle); + + if (p) + { + session = pool_elt_at_index (utm->sessions, p[0]); + hash_unset (utm->session_index_by_vpp_handles, mp->handle); + clib_warning ("disconnecting %u", session->session_index); + pool_put (utm->sessions, session); + } + 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_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); +} + +static void +session_connected_handler (session_connected_msg_t * mp) +{ + udp_echo_main_t *utm = &udp_echo_main; + unformat_input_t _input, *input = &_input; + session_endpoint_cfg_t _sep, *sep = &_sep; + app_session_t *session; + + ASSERT (utm->i_am_server == 0); + + if (mp->retval) + { + clib_warning ("failed connect"); + return; + } + + ASSERT (mp->server_rx_fifo && mp->server_tx_fifo); + + pool_get (utm->sessions, session); + session->session_index = session - utm->sessions; + session->rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); + session->tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); + + /* Cut-through case */ + if (mp->ct_rx_fifo) + { + clib_warning ("cut-through session"); + session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address, + svm_msg_q_t *); + utm->cut_through_session_index = session->session_index; + session->is_dgram = 0; + sleep (1); + session->rx_fifo->client_session_index = session->session_index; + session->tx_fifo->client_session_index = session->session_index; + /* TODO use ct fifos */ + } + else + { + utm->connected_session = session->session_index; + utm->vpp_event_queue = uword_to_pointer (mp->vpp_event_queue_address, + svm_msg_q_t *); + + session->rx_fifo->client_session_index = session->session_index; + session->tx_fifo->client_session_index = session->session_index; + clib_memcpy_fast (&session->transport.lcl_ip, &mp->lcl.ip, + sizeof (ip46_address_t)); + session->transport.is_ip4 = mp->lcl.is_ip4; + session->transport.lcl_port = mp->lcl.port; + + unformat_init_vector (input, utm->connect_uri); + if (!unformat (input, "%U", unformat_uri, sep)) + { + clib_warning ("can't figure out remote ip and port"); + utm->state = STATE_FAILED; + unformat_free (input); + return; + } + unformat_free (input); + clib_memcpy_fast (&session->transport.rmt_ip, &sep->ip, + sizeof (ip46_address_t)); + session->transport.rmt_port = sep->port; + session->is_dgram = !utm->is_connected; + } + utm->state = STATE_READY; +} + +static void +session_bound_handler (session_bound_msg_t * mp) +{ + udp_echo_main_t *utm = &udp_echo_main; + svm_fifo_t *rx_fifo, *tx_fifo; + app_session_t *session; + u32 session_index; + + if (mp->retval) + { + clib_warning ("bind failed: %d", mp->retval); + utm->state = STATE_FAILED; + return; + } + + rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *); + tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *); + + pool_get (utm->sessions, session); + clib_memset (session, 0, sizeof (*session)); + session_index = session - utm->sessions; + + rx_fifo->client_session_index = session_index; + tx_fifo->client_session_index = session_index; + session->rx_fifo = rx_fifo; + session->tx_fifo = tx_fifo; + clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip, + sizeof (ip46_address_t)); + session->transport.is_ip4 = mp->lcl_is_ip4; + session->transport.lcl_port = mp->lcl_port; + session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *); + + utm->state = utm->is_connected ? STATE_BOUND : STATE_READY; +} + +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; + default: + clib_warning ("unhandled %u", e->event_type); + } +} + +static void +udp_client_send_connect (udp_echo_main_t * utm) +{ + 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 = utm->my_client_index; + cmp->context = ntohl (0xfeedface); + memcpy (cmp->uri, utm->connect_uri, vec_len (utm->connect_uri)); + vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & cmp); +} + +static void +send_test_chunk (udp_echo_main_t * utm, app_session_t * s, u32 bytes) +{ + u64 test_buf_len, bytes_this_chunk, test_buf_offset; + + u8 *test_data = utm->connect_test_data; + u32 enq_space; + int written; + + test_buf_len = vec_len (test_data); + test_buf_offset = utm->bytes_sent % test_buf_len; + bytes_this_chunk = clib_min (test_buf_len - test_buf_offset, + utm->bytes_to_send); + enq_space = svm_fifo_max_enqueue_prod (s->tx_fifo); + bytes_this_chunk = clib_min (bytes_this_chunk, enq_space); + + written = app_send (s, test_data + test_buf_offset, bytes_this_chunk, + SVM_Q_WAIT); + if (written > 0) + { + utm->bytes_to_send -= written; + utm->bytes_sent += written; + } +} + +static void +recv_test_chunk (udp_echo_main_t * utm, app_session_t * s) +{ + app_recv (s, utm->rx_buf, vec_len (utm->rx_buf)); +} + +void +client_send_data (udp_echo_main_t * utm, u32 session_index) +{ + f64 start_time, end_time, delta; + app_session_t *session; + char *transfer_type; + u8 *test_data; + int i; + + vec_validate_aligned (utm->connect_test_data, 1024 * 1024 - 1, + CLIB_CACHE_LINE_BYTES); + for (i = 0; i < vec_len (utm->connect_test_data); i++) + utm->connect_test_data[i] = i & 0xff; + + test_data = utm->connect_test_data; + session = pool_elt_at_index (utm->sessions, session_index); + ASSERT (vec_len (test_data) > 0); + + utm->total_to_send = utm->bytes_to_send; + vec_validate (utm->rx_buf, vec_len (test_data) - 1); + start_time = clib_time_now (&utm->clib_time); + while (!utm->time_to_stop && utm->bytes_to_send) + { + send_test_chunk (utm, session, 0); + if (utm->have_return) + recv_test_chunk (utm, session); + if (utm->time_to_stop) + break; + } + + if (utm->have_return) + { + f64 timeout = clib_time_now (&utm->clib_time) + 5; + while (clib_time_now (&utm->clib_time) < timeout) + recv_test_chunk (utm, session); + } + + end_time = clib_time_now (&utm->clib_time); + delta = end_time - start_time; + transfer_type = utm->have_return ? "full-duplex" : "half-duplex"; + clib_warning ("%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds", + utm->total_to_send, utm->total_to_send / (1ULL << 20), + utm->total_to_send / (1ULL << 30), delta); + clib_warning ("%.2f bytes/second %s", ((f64) utm->total_to_send) / (delta), + transfer_type); + clib_warning ("%.4f gbit/second %s", + (((f64) utm->total_to_send * 8.0) / delta / 1e9), + transfer_type); +} + +static int +application_attach (udp_echo_main_t * utm) +{ + application_send_attach (utm); + if (wait_for_state_change (utm, STATE_ATTACHED)) + { + clib_warning ("timeout waiting for STATE_ATTACHED"); + return -1; + } + return 0; +} + +static void +client_test (udp_echo_main_t * utm) +{ + f64 start_time, timeout = 100.0; + svm_msg_q_msg_t msg; + session_event_t *e; + + if (application_attach (utm)) + return; + + udp_client_send_connect (utm); + + start_time = clib_time_now (&utm->clib_time); + while (pool_elts (utm->sessions) != 1 && utm->state != STATE_FAILED) + { + svm_msg_q_sub (utm->our_event_queue, &msg, SVM_Q_WAIT, 0); + e = svm_msg_q_msg_data (utm->our_event_queue, &msg); + handle_mq_event (e); + svm_msg_q_free_msg (utm->our_event_queue, &msg); + + if (clib_time_now (&utm->clib_time) - start_time >= timeout) + break; + } + + if (utm->cut_through_session_index != ~0) + client_send_data (utm, utm->cut_through_session_index); + else + client_send_data (utm, utm->connected_session); + + application_detach (utm); + wait_for_state_change (utm, STATE_DETACHED); +} + +static void +vl_api_map_another_segment_t_handler (vl_api_map_another_segment_t * mp) +{ + fifo_segment_create_args_t _a, *a = &_a; + udp_echo_main_t *utm = &udp_echo_main; + fifo_segment_main_t *sm = &utm->segment_main; + fifo_segment_t *seg; + 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; + } + seg = fifo_segment_get_segment (sm, a->new_segment_indices[0]); + clib_warning ("Mapped new segment '%s' size %d", seg->ssvm.name, + seg->ssvm.ssvm_size); + hash_set (utm->segments_table, clib_net_to_host_u64 (mp->segment_handle), + a->new_segment_indices[0]); +} + +static void +vl_api_unmap_segment_t_handler (vl_api_unmap_segment_t * mp) +{ + udp_echo_main_t *utm = &udp_echo_main; + fifo_segment_main_t *sm = &utm->segment_main; + fifo_segment_t *seg; + uword *seg_indexp; + u64 segment_handle; + + segment_handle = clib_net_to_host_u64 (mp->segment_handle); + seg_indexp = hash_get (utm->segments_table, segment_handle); + if (!seg_indexp) + { + clib_warning ("segment not mapped: %s", segment_handle); + return; + } + hash_unset (utm->segments_table, segment_handle); + seg = fifo_segment_get_segment (sm, (u32) seg_indexp[0]); + fifo_segment_delete (sm, seg); + clib_warning ("Unmapped segment '%s'", segment_handle); +} + +static void +vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp) +{ + udp_echo_main_t *utm = &udp_echo_main; + + if (mp->retval != 0) + clib_warning ("returned %d", ntohl (mp->retval)); + + utm->state = STATE_START; +} + +static void + vl_api_app_cut_through_registration_add_t_handler + (vl_api_app_cut_through_registration_add_t * mp) +{ + +} + +#define foreach_tcp_echo_msg \ +_(UNBIND_URI_REPLY, unbind_uri_reply) \ +_(MAP_ANOTHER_SEGMENT, map_another_segment) \ +_(UNMAP_SEGMENT, unmap_segment) \ +_(APPLICATION_ATTACH_REPLY, application_attach_reply) \ +_(APPLICATION_DETACH_REPLY, application_detach_reply) \ +_(APP_CUT_THROUGH_REGISTRATION_ADD, app_cut_through_registration_add) \ + +void +tcp_echo_api_hookup (udp_echo_main_t * utm) +{ +#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 +connect_to_vpp (char *name) +{ + udp_echo_main_t *utm = &udp_echo_main; + api_main_t *am = &api_main; + + if (vl_client_connect_to_vlib ("/vpe-api", name, 32) < 0) + return -1; + + utm->vl_input_queue = am->shmem_hdr->vl_input_queue; + utm->my_client_index = am->my_client_index; + + return 0; +} + +void +vlib_cli_output (struct vlib_main_t *vm, char *fmt, ...) +{ + clib_warning ("BUG"); +} + +static void +init_error_string_table (udp_echo_main_t * utm) +{ + utm->error_string_by_error_number = hash_create (0, sizeof (uword)); + +#define _(n,v,s) hash_set (utm->error_string_by_error_number, -v, s); + foreach_vnet_api_error; +#undef _ + + hash_set (utm->error_string_by_error_number, 99, "Misc"); +} + +void +server_handle_fifo_event_rx (udp_echo_main_t * utm, u32 session_index) +{ + svm_fifo_t *rx_fifo, *tx_fifo; + int n_read; + app_session_t *session; + int rv; + u32 max_dequeue, offset, max_transfer, rx_buf_len; + + session = pool_elt_at_index (utm->sessions, session_index); + rx_buf_len = vec_len (utm->rx_buf); + rx_fifo = session->rx_fifo; + tx_fifo = session->tx_fifo; + + + max_dequeue = svm_fifo_max_dequeue_cons (rx_fifo); + /* Allow enqueuing of a new event */ + svm_fifo_unset_event (rx_fifo); + + if (PREDICT_FALSE (!max_dequeue)) + return; + + /* Read the max_dequeue */ + do + { + max_transfer = clib_min (rx_buf_len, max_dequeue); + if (session->is_dgram) + n_read = app_recv_dgram_raw (rx_fifo, utm->rx_buf, max_transfer, + &session->transport, 0, 0); + else + n_read = app_recv_stream_raw (rx_fifo, utm->rx_buf, max_transfer, 0, + 0); + + if (n_read > 0) + max_dequeue -= n_read; + + /* Reflect if a non-drop session */ + if (utm->have_return && n_read > 0) + { + offset = 0; + do + { + rv = app_send (session, &utm->rx_buf[offset], n_read, + SVM_Q_WAIT); + if (rv > 0) + { + n_read -= rv; + offset += rv; + } + } + while ((rv <= 0 || n_read > 0) && !utm->time_to_stop); + + /* If event wasn't set, add one */ + if (svm_fifo_set_event (tx_fifo)) + app_send_io_evt_to_vpp (session->vpp_evt_q, + tx_fifo->master_session_index, + SESSION_IO_EVT_TX, SVM_Q_WAIT); + } + } + while ((n_read < 0 || max_dequeue > 0) && !utm->time_to_stop); +} + +static void +server_handle_event_queue (udp_echo_main_t * utm) +{ + session_event_t *e; + svm_msg_q_msg_t msg; + svm_msg_q_t *mq = utm->our_event_queue; + + while (utm->state != STATE_READY) + sleep (5); + + while (1) + { + if (svm_msg_q_sub (mq, &msg, SVM_Q_WAIT, 0)) + { + clib_warning ("svm msg q returned"); + continue; + } + e = svm_msg_q_msg_data (mq, &msg); + switch (e->event_type) + { + case SESSION_IO_EVT_RX: + server_handle_fifo_event_rx (utm, e->session_index); + break; + + default: + handle_mq_event (e); + break; + } + svm_msg_q_free_msg (mq, &msg); + if (PREDICT_FALSE (utm->time_to_stop == 1)) + return; + if (PREDICT_FALSE (utm->time_to_print_stats == 1)) + { + utm->time_to_print_stats = 0; + fformat (stdout, "%d connections\n", pool_elts (utm->sessions)); + } + } +} + +static void +server_unbind (udp_echo_main_t * utm) +{ + 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 = utm->my_client_index; + memcpy (ump->uri, utm->listen_uri, vec_len (utm->listen_uri)); + vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & ump); +} + +static void +server_bind (udp_echo_main_t * utm) +{ + 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 = utm->my_client_index; + bmp->context = ntohl (0xfeedface); + memcpy (bmp->uri, utm->listen_uri, vec_len (utm->listen_uri)); + vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp); +} + +void +udp_server_test (udp_echo_main_t * utm) +{ + u8 wait_for_state = utm->is_connected ? STATE_BOUND : STATE_READY; + application_send_attach (utm); + + /* Bind to uri */ + server_bind (utm); + + if (wait_for_state_change (utm, wait_for_state)) + { + clib_warning ("timeout waiting for state change"); + return; + } + + server_handle_event_queue (utm); + + /* Cleanup */ + server_unbind (utm); + + if (wait_for_state_change (utm, STATE_START)) + { + clib_warning ("timeout waiting for STATE_START"); + return; + } + + application_detach (utm); + + fformat (stdout, "Test complete...\n"); +} + +int +main (int argc, char **argv) +{ + udp_echo_main_t *utm = &udp_echo_main; + fifo_segment_main_t *sm = &utm->segment_main; + u8 *uri = (u8 *) "udp://6.0.1.1/1234"; + unformat_input_t _argv, *a = &_argv; + int i_am_server = 1; + app_session_t *session; + u8 *chroot_prefix; + char *app_name; + u32 tmp; + int i; + + clib_mem_init_thread_safe (0, 256 << 20); + + fifo_segment_main_init (sm, HIGH_SEGMENT_BASEVA, 20); + + vec_validate (utm->rx_buf, 128 << 10); + utm->session_index_by_vpp_handles = hash_create (0, sizeof (uword)); + utm->my_pid = getpid (); + utm->configured_segment_size = 1 << 20; + utm->have_return = 1; + utm->bytes_to_send = 1024; + utm->fifo_size = 128 << 10; + utm->cut_through_session_index = ~0; + clib_time_init (&utm->clib_time); + + init_error_string_table (utm); + 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)) + utm->configured_segment_size = tmp << 20; + else if (unformat (a, "segment-size %dG", &tmp)) + utm->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")) + utm->have_return = 0; + else if (unformat (a, "mbytes %d", &tmp)) + utm->bytes_to_send = (u64) tmp << 20; + else if (unformat (a, "fifo-size %d", &tmp)) + utm->fifo_size = tmp << 10; + else + { + fformat (stderr, "%s: usage [server|client]\n"); + exit (1); + } + } + + utm->i_am_server = i_am_server; + + setup_signal_handlers (); + tcp_echo_api_hookup (utm); + + if (i_am_server) + { + utm->listen_uri = format (0, "%s%c", uri, 0); + utm->is_connected = (utm->listen_uri[4] == 'c'); + app_name = "udp_echo_server"; + } + else + { + app_name = "udp_echo_client"; + utm->connect_uri = format (0, "%s%c", uri, 0); + utm->is_connected = (utm->connect_uri[4] == 'c'); + } + 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) + { + client_test (utm); + goto done; + } + + /* $$$$ hack preallocation */ + for (i = 0; i < 200000; i++) + { + pool_get (utm->sessions, session); + clib_memset (session, 0, sizeof (*session)); + } + for (i = 0; i < 200000; i++) + pool_put_index (utm->sessions, i); + + udp_server_test (utm); + +done: + vl_client_disconnect_from_vlib (); + exit (0); +} + +#undef vl_api_version +#define vl_api_version(n,v) static u32 vpe_api_version = v; +#include <vpp/api/vpe.api.h> +#undef vl_api_version + +void +vl_client_add_api_signatures (vl_api_memclnt_create_t * mp) +{ + /* + * Send the main API signature in slot 0. This bit of code must + * match the checks in ../vpe/api/api.c: vl_msg_api_version_check(). + */ + mp->api_versions[0] = clib_host_to_net_u32 (vpe_api_version); +} + +u32 +vl (void *p) +{ + return vec_len (p); +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |