--- /dev/null
+/*
+ * Copyright (c) 2019 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 <svm/svm_fifo_segment.h>
+#include <vlibmemory/api.h>
+
+#include <vpp/api/vpe_msg_enum.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;
+
+ 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 (SIGUSR2, stats_signal);
+ signal (SIGINT, stop_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 (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;
+ }
+
+ clib_warning ("GOT OUT");
+ 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 && em->time_to_stop != 1)
+
+ {
+ int rc = svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_TIMEDWAIT, 1);
+ if (rc == ETIMEDOUT && em->time_to_stop)
+ break;
+ if (rc == ETIMEDOUT)
+ 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);
+ }
+
+ 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_TIMEDWAIT, 0))
+ {
+ clib_warning ("svm msg q returned");
+ continue;
+ }
+ e = svm_msg_q_msg_data (em->our_event_queue, &msg);
+ if (e->event_type != FIFO_EVENT_APP_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 (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)
+ {
+ int rc = svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_TIMEDWAIT, 1);
+ if (PREDICT_FALSE (rc == ETIMEDOUT && em->time_to_stop))
+ 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));
+ }
+ if (rc == ETIMEDOUT)
+ continue;
+ e = svm_msg_q_msg_data (em->our_event_queue, &msg);
+ clib_warning ("Event %d", e->event_type);
+ switch (e->event_type)
+ {
+ case FIFO_EVENT_APP_RX:
+ server_handle_rx (em, e);
+ break;
+ default:
+ handle_mq_event (e);
+ break;
+ }
+ 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);
+}
+
+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_quic_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
+quic_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_quic_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 *) "quic://0.0.0.0/1234";
+ u8 *connect_uri = (u8 *) "quic://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, "bytes %lld", &mbytes))
+ {
+ bytes_to_send = mbytes;
+ }
+ 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 ();
+ quic_echo_api_hookup (em);
+
+ app_name = i_am_server ? "quic_echo_server" : "quic_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:
+ */
Code Review / vpp.git / blobdiff