aboutsummaryrefslogtreecommitdiffstats
path: root/src/plugins
diff options
context:
space:
mode:
Diffstat (limited to 'src/plugins')
-rw-r--r--src/plugins/hs_apps/CMakeLists.txt22
-rw-r--r--src/plugins/hs_apps/quic_echo.c1841
-rw-r--r--src/plugins/hs_apps/tcp_echo.c1414
-rw-r--r--src/plugins/hs_apps/udp_echo.c1256
4 files changed, 4533 insertions, 0 deletions
diff --git a/src/plugins/hs_apps/CMakeLists.txt b/src/plugins/hs_apps/CMakeLists.txt
index d27c8512306..e7885c3d1bf 100644
--- a/src/plugins/hs_apps/CMakeLists.txt
+++ b/src/plugins/hs_apps/CMakeLists.txt
@@ -19,3 +19,25 @@ add_vpp_plugin(hs_apps
http_server.c
proxy.c
)
+
+option(VPP_BUILD_SESSION_ECHO_APPS "Build session echo apps." ON)
+if(VPP_BUILD_SESSION_ECHO_APPS)
+ add_vpp_executable(tcp_echo
+ SOURCES tcp_echo.c
+ LINK_LIBRARIES vlibmemoryclient svm vppinfra pthread m rt
+ DEPENDS api_headers
+ NO_INSTALL
+ )
+ add_vpp_executable(quic_echo
+ SOURCES quic_echo.c
+ LINK_LIBRARIES vlibmemoryclient svm vppinfra pthread m rt
+ DEPENDS api_headers
+ NO_INSTALL
+ )
+ add_vpp_executable(udp_echo
+ SOURCES udp_echo.c
+ LINK_LIBRARIES vlibmemoryclient svm vppinfra pthread m rt
+ DEPENDS api_headers
+ NO_INSTALL
+ )
+endif(VPP_BUILD_SESSION_ECHO_APPS)
diff --git a/src/plugins/hs_apps/quic_echo.c b/src/plugins/hs_apps/quic_echo.c
new file mode 100644
index 00000000000..a62af642b2f
--- /dev/null
+++ b/src/plugins/hs_apps/quic_echo.c
@@ -0,0 +1,1841 @@
+/*
+ * 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 <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 QUIC_ECHO_DBG 0
+#define DBG(_fmt, _args...) \
+ if (QUIC_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 enum
+{
+ ECHO_EVT_START, /* app starts */
+ ECHO_EVT_FIRST_QCONNECT, /* First connect Quic session sent */
+ ECHO_EVT_LAST_QCONNECTED, /* All Quic session are connected */
+ ECHO_EVT_FIRST_SCONNECT, /* First connect Stream session sent */
+ ECHO_EVT_LAST_SCONNECTED, /* All Stream session are connected */
+ ECHO_EVT_LAST_BYTE, /* Last byte received */
+ ECHO_EVT_EXIT, /* app exits */
+} echo_test_evt_t;
+
+enum quic_session_type_t
+{
+ QUIC_SESSION_TYPE_QUIC = 0,
+ QUIC_SESSION_TYPE_STREAM = 1,
+ QUIC_SESSION_TYPE_LISTEN = INT32_MAX,
+};
+
+typedef struct _quic_echo_cb_vft
+{
+ void (*quic_connected_cb) (session_connected_msg_t * mp, u32 session_index);
+ void (*client_stream_connected_cb) (session_connected_msg_t * mp,
+ u32 session_index);
+ void (*server_stream_connected_cb) (session_connected_msg_t * mp,
+ u32 session_index);
+ void (*quic_accepted_cb) (session_accepted_msg_t * mp, u32 session_index);
+ void (*client_stream_accepted_cb) (session_accepted_msg_t * mp,
+ u32 session_index);
+ void (*server_stream_accepted_cb) (session_accepted_msg_t * mp,
+ u32 session_index);
+} quic_echo_cb_vft_t;
+
+
+typedef enum
+{
+ RETURN_PACKETS_NOTEST,
+ RETURN_PACKETS_LOG_WRONG,
+ RETURN_PACKETS_ASSERT,
+} test_return_packets_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;
+ /* Handle of vpp listener session */
+ u64 listener_handle;
+
+ /* Hash table for shared segment_names */
+ uword *shared_segment_handles;
+ clib_spinlock_t segment_handles_lock;
+
+ /* intermediate rx buffer */
+ u8 *rx_buf;
+
+ 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;
+
+ /* 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;
+ u8 test_return_packets;
+ u64 bytes_to_send;
+ u64 bytes_to_receive;
+ u32 fifo_size;
+
+ u8 *appns_id;
+ u64 appns_flags;
+ u64 appns_secret;
+
+ u32 n_clients; /* Target number of QUIC sessions */
+ u32 n_stream_clients; /* Target Number of STREAM sessions per QUIC session */
+ volatile u32 n_quic_clients_connected; /* Number of connected QUIC sessions */
+ volatile u32 n_clients_connected; /* Number of STREAM sessions connected */
+
+ u64 tx_total;
+ u64 rx_total;
+
+ /* Event based timing : start & end depend on CLI specified events */
+ u8 first_sconnect_sent; /* Sent the first Stream session connect ? */
+ f64 start_time;
+ f64 end_time;
+ u8 timing_start_event;
+ u8 timing_end_event;
+
+ /* cb vft for QUIC scenarios */
+ quic_echo_cb_vft_t cb_vft;
+
+ /** 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;
+
+ /* Limit the number of incorrect data messages */
+ int max_test_msg;
+
+ 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
+
+#if CLIB_DEBUG > 0
+#define TIMEOUT 10.0
+#else
+#define TIMEOUT 10.0
+#endif
+
+u8 *
+format_quic_echo_state (u8 * s, va_list * args)
+{
+ u32 state = va_arg (*args, u32);
+ if (state == STATE_START)
+ return format (s, "STATE_START");
+ if (state == STATE_ATTACHED)
+ return format (s, "STATE_ATTACHED");
+ if (state == STATE_LISTEN)
+ return format (s, "STATE_LISTEN");
+ if (state == STATE_READY)
+ return format (s, "STATE_READY");
+ if (state == STATE_DISCONNECTING)
+ return format (s, "STATE_DISCONNECTING");
+ if (state == STATE_FAILED)
+ return format (s, "STATE_FAILED");
+ if (state == STATE_DETACHED)
+ return format (s, "STATE_DETACHED");
+ else
+ return format (s, "unknown state");
+}
+
+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
+quic_echo_notify_event (echo_main_t * em, echo_test_evt_t e)
+{
+ if (em->timing_start_event == e)
+ em->start_time = clib_time_now (&em->clib_time);
+ else if (em->timing_end_event == e)
+ em->end_time = clib_time_now (&em->clib_time);
+}
+
+static uword
+echo_unformat_timing_event (unformat_input_t * input, va_list * args)
+{
+ echo_test_evt_t *a = va_arg (*args, echo_test_evt_t *);
+ if (unformat (input, "start"))
+ *a = ECHO_EVT_START;
+ else if (unformat (input, "qconnect"))
+ *a = ECHO_EVT_FIRST_QCONNECT;
+ else if (unformat (input, "qconnected"))
+ *a = ECHO_EVT_LAST_QCONNECTED;
+ else if (unformat (input, "sconnect"))
+ *a = ECHO_EVT_FIRST_SCONNECT;
+ else if (unformat (input, "sconnected"))
+ *a = ECHO_EVT_LAST_SCONNECTED;
+ else if (unformat (input, "lastbyte"))
+ *a = ECHO_EVT_LAST_BYTE;
+ else if (unformat (input, "exit"))
+ *a = ECHO_EVT_EXIT;
+ else
+ return 0;
+ return 1;
+}
+
+u8 *
+echo_format_timing_event (u8 * s, va_list * args)
+{
+ u32 timing_event = va_arg (*args, u32);
+ if (timing_event == ECHO_EVT_START)
+ return format (s, "start");
+ if (timing_event == ECHO_EVT_FIRST_QCONNECT)
+ return format (s, "qconnect");
+ if (timing_event == ECHO_EVT_LAST_QCONNECTED)
+ return format (s, "qconnected");
+ if (timing_event == ECHO_EVT_FIRST_SCONNECT)
+ return format (s, "sconnect");
+ if (timing_event == ECHO_EVT_LAST_SCONNECTED)
+ return format (s, "sconnected");
+ if (timing_event == ECHO_EVT_LAST_BYTE)
+ return format (s, "lastbyte");
+ if (timing_event == ECHO_EVT_EXIT)
+ return format (s, "exit");
+ else
+ return format (s, "unknown timing event");
+}
+
+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 (echo_main_t * em, session_event_t * e,
+ int handle_rx);
+static void echo_handle_rx (echo_main_t * em, session_event_t * e);
+
+static int
+wait_for_segment_allocation (u64 segment_handle)
+{
+ echo_main_t *em = &echo_main;
+ f64 timeout;
+ timeout = clib_time_now (&em->clib_time) + TIMEOUT;
+ uword *segment_present;
+ DBG ("Waiting for segment %lx...", segment_handle);
+ while (clib_time_now (&em->clib_time) < timeout)
+ {
+ clib_spinlock_lock (&em->segment_handles_lock);
+ segment_present = hash_get (em->shared_segment_handles, segment_handle);
+ clib_spinlock_unlock (&em->segment_handles_lock);
+ if (segment_present != 0)
+ return 0;
+ if (em->time_to_stop == 1)
+ return 0;
+ }
+ DBG ("timeout waiting for segment_allocation %lx", segment_handle);
+ return -1;
+}
+
+static int
+wait_for_disconnected_sessions (echo_main_t * em)
+{
+ f64 timeout;
+ timeout = clib_time_now (&em->clib_time) + TIMEOUT;
+ while (clib_time_now (&em->clib_time) < timeout)
+ {
+ if (hash_elts (em->session_index_by_vpp_handles) == 0)
+ return 0;
+ }
+ DBG ("timeout waiting for disconnected_sessions");
+ return -1;
+}
+
+static int
+wait_for_state_change (echo_main_t * em, connection_state_t state,
+ f64 timeout)
+{
+ svm_msg_q_msg_t msg;
+ session_event_t *e;
+ f64 end_time = clib_time_now (&em->clib_time) + timeout;
+
+ while (!timeout || clib_time_now (&em->clib_time) < end_time)
+ {
+ 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 (em, e, 0 /* handle_rx */ );
+ svm_msg_q_free_msg (em->our_event_queue, &msg);
+ }
+ clib_warning ("timeout waiting for state %U", format_quic_echo_state,
+ state);
+ return -1;
+}
+
+static void
+notify_rx_data_to_vpp (echo_session_t * s)
+{
+ svm_fifo_t *f = s->tx_fifo;
+ return; /* FOR NOW */
+ if (svm_fifo_set_event (f))
+ {
+ DBG ("did send event");
+ app_send_io_evt_to_vpp (s->vpp_evt_q, f->master_session_index,
+ SESSION_IO_EVT_TX, 0 /* noblock */ );
+ }
+}
+
+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;
+ if (em->appns_id)
+ {
+ bmp->namespace_id_len = vec_len (em->appns_id);
+ clib_memcpy_fast (bmp->namespace_id, em->appns_id,
+ bmp->namespace_id_len);
+ bmp->options[APP_OPTIONS_FLAGS] |= em->appns_flags;
+ bmp->options[APP_OPTIONS_NAMESPACE_SECRET] = em->appns_secret;
+ }
+ 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);
+ return wait_for_state_change (em, STATE_ATTACHED, TIMEOUT);
+}
+
+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;
+ u64 segment_handle;
+ segment_handle = clib_net_to_host_u64 (mp->segment_handle);
+ DBG ("Attached returned app %u", htons (mp->app_index));
+
+ 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;
+ }
+ clib_spinlock_lock (&em->segment_handles_lock);
+ hash_set (em->shared_segment_handles, segment_handle, 1);
+ clib_spinlock_unlock (&em->segment_handles_lock);
+ DBG ("Mapped new segment %lx", segment_handle);
+
+ 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 clib_error_t *
+setup_signal_handlers (void)
+{
+ signal (SIGINT, stop_signal);
+ signal (SIGQUIT, stop_signal);
+ signal (SIGTERM, stop_signal);
+ return 0;
+}
+
+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;
+ echo_main_t *em = &echo_main;
+ int rv;
+ int *fds = 0;
+ u64 segment_handle;
+ segment_handle = clib_net_to_host_u64 (mp->segment_handle);
+
+ if (mp->fd_flags & SESSION_FD_F_MEMFD_SEGMENT)
+ {
+ vec_validate (fds, 1);
+ vl_socket_client_recv_fd_msg (fds, 1, 5);
+ if (ssvm_segment_attach
+ ((char *) mp->segment_name, SSVM_SEGMENT_MEMFD, fds[0]))
+ clib_warning
+ ("svm_fifo_segment_attach ('%s') failed on SSVM_SEGMENT_MEMFD",
+ mp->segment_name);
+ clib_spinlock_lock (&em->segment_handles_lock);
+ hash_set (em->shared_segment_handles, segment_handle, 1);
+ clib_spinlock_unlock (&em->segment_handles_lock);
+ vec_free (fds);
+ DBG ("Mapped new segment %lx", segment_handle);
+ return;
+ }
+
+ 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_spinlock_lock (&em->segment_handles_lock);
+ hash_set (em->shared_segment_handles, mp->segment_name, 1);
+ clib_spinlock_unlock (&em->segment_handles_lock);
+ 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 = clib_time_now (&em->clib_time) - session->start;
+ fformat (stdout, "Session %x done in %.6fs RX[%.4f] TX[%.4f] Gbit/s\n",
+ session->session_index, deltat,
+ (session->bytes_received * 8.0) / deltat / 1e9,
+ (session->bytes_sent * 8.0) / deltat / 1e9);
+}
+
+static void
+print_global_stats (echo_main_t * em)
+{
+ f64 deltat = em->end_time - em->start_time;
+ u8 *s = format (0, "%U:%U",
+ echo_format_timing_event, em->timing_start_event,
+ echo_format_timing_event, em->timing_end_event);
+ fformat (stdout, "Timinig %s\n", s);
+ fformat (stdout, "-------- TX --------\n");
+ 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);
+ fformat (stdout, "-------- RX --------\n");
+ fformat (stdout, "%lld bytes (%lld mbytes, %lld gbytes) in %.2f seconds\n",
+ em->rx_total, em->rx_total / (1ULL << 20),
+ em->rx_total / (1ULL << 30), deltat);
+ fformat (stdout, "%.4f Gbit/second\n", (em->rx_total * 8.0) / deltat / 1e9);
+ fformat (stdout, "--------------------\n");
+}
+
+
+static void
+test_recv_bytes (echo_main_t * em, echo_session_t * s, u8 * rx_buf,
+ u32 n_read)
+{
+ int i;
+ u8 expected;
+ for (i = 0; i < n_read; i++)
+ {
+ expected = (s->bytes_received + i) & 0xff;
+ if (rx_buf[i] != expected && em->max_test_msg > 0)
+ {
+ clib_warning
+ ("Session[%lx][0x%lx] byte[%lld], got 0x%x but expected 0x%x",
+ s->session_index, s->vpp_session_handle, s->bytes_received + i,
+ rx_buf[i], expected);
+ em->max_test_msg--;
+ if (em->max_test_msg == 0)
+ clib_warning ("Too many errors, hiding next ones");
+ if (em->test_return_packets == RETURN_PACKETS_ASSERT)
+ ASSERT (0);
+ }
+ }
+}
+
+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)
+ break;
+ notify_rx_data_to_vpp (s);
+ if (em->test_return_packets)
+ test_recv_bytes (em, s, rx_buf, n_read);
+
+ ASSERT (s->bytes_to_receive >= n_read);
+ n_to_read -= n_read;
+ s->bytes_received += n_read;
+ s->bytes_to_receive -= n_read;
+ }
+ 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;
+ 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 ("[%lu/%lu] -> S(%x) -> [%lu/%lu]",
+ s->bytes_received, s->bytes_received + s->bytes_to_receive,
+ session_index, s->bytes_sent, s->bytes_sent + s->bytes_to_send);
+ em->tx_total += s->bytes_sent;
+ em->rx_total += s->bytes_received;
+ em->n_clients_connected--;
+
+ if (em->n_clients_connected == 0)
+ quic_echo_notify_event (em, ECHO_EVT_LAST_BYTE);
+
+ pthread_exit (0);
+}
+
+static void
+echo_send_connect (echo_main_t * em, u8 * uri, u32 opaque)
+{
+ 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 (opaque);
+ memcpy (cmp->uri, uri, vec_len (uri));
+ vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & cmp);
+}
+
+static void
+client_disconnect_session (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;
+ DBG ("Sending Session disonnect handle %lu", dmp->handle);
+ vl_msg_api_send_shmem (em->vl_input_queue, (u8 *) & dmp);
+ pool_put (em->sessions, s);
+ clib_memset (s, 0xfe, sizeof (*s));
+}
+
+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,
+ clib_net_to_host_u16 (mp->lcl_port));
+ em->listener_handle = mp->handle;
+ em->state = STATE_LISTEN;
+}
+
+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;
+ u32 session_index;
+
+ /* Allocate local session and set it up */
+ pool_get (em->sessions, session);
+ session_index = session - em->sessions;
+
+ if (wait_for_segment_allocation (mp->segment_handle))
+ return;
+
+ 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->session_index = session_index;
+ 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 *);
+
+ /* Add it to lookup table */
+ DBG ("Accepted session handle %lx, Listener %lx idx %lu", mp->handle,
+ mp->listener_handle, session_index);
+ hash_set (em->session_index_by_vpp_handles, mp->handle, session_index);
+
+ 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);
+
+ DBG ("SSession handle is %lu", mp->handle);
+ if (mp->listener_handle == em->listener_handle)
+ {
+ if (em->cb_vft.quic_accepted_cb)
+ em->cb_vft.quic_accepted_cb (mp, session_index);
+ em->n_quic_clients_connected++;
+ }
+ else if (em->i_am_master)
+ {
+ if (em->cb_vft.server_stream_accepted_cb)
+ em->cb_vft.server_stream_accepted_cb (mp, session_index);
+ em->n_clients_connected++;
+ }
+ else
+ {
+ if (em->cb_vft.client_stream_accepted_cb)
+ em->cb_vft.client_stream_accepted_cb (mp, session_index);
+ em->n_clients_connected++;
+ }
+
+ if (em->n_clients_connected == em->n_clients * em->n_stream_clients)
+ {
+ em->state = STATE_READY;
+ quic_echo_notify_event (em, ECHO_EVT_LAST_SCONNECTED);
+ }
+ if (em->n_quic_clients_connected == em->n_clients)
+ quic_echo_notify_event (em, ECHO_EVT_LAST_QCONNECTED);
+}
+
+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;
+
+ 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;
+ }
+
+ pool_get (em->sessions, session);
+ clib_memset (session, 0, sizeof (*session));
+ session_index = session - em->sessions;
+ DBG ("CONNECTED session[%lx][0x%lx]", session_index, mp->handle);
+
+ if (wait_for_segment_allocation (mp->segment_handle))
+ return;
+
+ 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->session_index = session_index;
+ session->start = clib_time_now (&em->clib_time);
+ session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address,
+ svm_msg_q_t *);
+
+ DBG ("Connected session handle %lx, idx %lu RX[%lx] TX[%lx]", mp->handle,
+ session_index, rx_fifo, tx_fifo);
+ hash_set (em->session_index_by_vpp_handles, mp->handle, session_index);
+
+ if (mp->context == QUIC_SESSION_TYPE_QUIC)
+ {
+ if (em->cb_vft.quic_connected_cb)
+ em->cb_vft.quic_connected_cb (mp, session_index);
+ em->n_quic_clients_connected++;
+ }
+ else if (em->i_am_master)
+ {
+ if (em->cb_vft.server_stream_connected_cb)
+ em->cb_vft.server_stream_connected_cb (mp, session_index);
+ em->n_clients_connected++;
+ }
+ else
+ {
+ if (em->cb_vft.client_stream_connected_cb)
+ em->cb_vft.client_stream_connected_cb (mp, session_index);
+ em->n_clients_connected++;
+ }
+
+ if (em->n_clients_connected == em->n_clients * em->n_stream_clients)
+ {
+ em->state = STATE_READY;
+ quic_echo_notify_event (em, ECHO_EVT_LAST_SCONNECTED);
+ }
+ if (em->n_quic_clients_connected == em->n_clients)
+ quic_echo_notify_event (em, ECHO_EVT_LAST_QCONNECTED);
+}
+
+/*
+ *
+ * ECHO Callback definitions
+ *
+ */
+
+
+static void
+echo_on_connected_connect (session_connected_msg_t * mp, u32 session_index)
+{
+ echo_main_t *em = &echo_main;
+ u8 *uri = format (0, "QUIC://session/%lu", mp->handle);
+ int i;
+
+ if (!em->first_sconnect_sent)
+ {
+ em->first_sconnect_sent = 1;
+ quic_echo_notify_event (em, ECHO_EVT_FIRST_SCONNECT);
+ }
+ for (i = 0; i < em->n_stream_clients; i++)
+ {
+ DBG ("CONNECT : new QUIC stream #%d: %s", i, uri);
+ echo_send_connect (em, uri, QUIC_SESSION_TYPE_STREAM);
+ }
+
+ 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
+echo_on_connected_send (session_connected_msg_t * mp, u32 session_index)
+{
+ echo_main_t *em = &echo_main;
+ int rv;
+ echo_session_t *session;
+
+ DBG ("Stream Session Connected");
+
+ session = pool_elt_at_index (em->sessions, session_index);
+ session->bytes_to_send = em->bytes_to_send;
+ session->bytes_to_receive = em->bytes_to_receive;
+
+ /*
+ * 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;
+ }
+}
+
+static void
+echo_on_connected_error (session_connected_msg_t * mp, u32 session_index)
+{
+ clib_warning ("Got a wrong connected on session %u [%lx]", session_index,
+ mp->handle);
+}
+
+static void
+echo_on_accept_recv (session_accepted_msg_t * mp, u32 session_index)
+{
+ echo_main_t *em = &echo_main;
+ int rv;
+ echo_session_t *session;
+
+ session = pool_elt_at_index (em->sessions, session_index);
+ session->bytes_to_send = em->bytes_to_send;
+ session->bytes_to_receive = em->bytes_to_receive;
+
+ DBG ("Stream session accepted 0x%lx, expecting %lu bytes",
+ session->vpp_session_handle, session->bytes_to_receive);
+
+ /*
+ * 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;
+ }
+
+}
+
+static void
+echo_on_accept_connect (session_accepted_msg_t * mp, u32 session_index)
+{
+ echo_main_t *em = &echo_main;
+ DBG ("Accept on QSession index %u", mp->handle);
+ u8 *uri = format (0, "QUIC://session/%lu", mp->handle);
+ u32 i;
+
+ if (!em->first_sconnect_sent)
+ {
+ em->first_sconnect_sent = 1;
+ quic_echo_notify_event (em, ECHO_EVT_FIRST_SCONNECT);
+ }
+ for (i = 0; i < em->n_stream_clients; i++)
+ {
+ DBG ("ACCEPT : new QUIC stream #%d: %s", i, uri);
+ echo_send_connect (em, uri, QUIC_SESSION_TYPE_STREAM);
+ }
+}
+
+static void
+echo_on_accept_error (session_accepted_msg_t * mp, u32 session_index)
+{
+ clib_warning ("Got a wrong accept on session %u [%lx]", session_index,
+ mp->handle);
+}
+
+static void
+echo_on_accept_log_ip (session_accepted_msg_t * mp, u32 session_index)
+{
+ u8 *ip_str;
+ 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));
+
+}
+
+static const quic_echo_cb_vft_t default_cb_vft = {
+ /* Qsessions */
+ .quic_accepted_cb = &echo_on_accept_log_ip,
+ .quic_connected_cb = &echo_on_connected_connect,
+ /* client initiated streams */
+ .server_stream_accepted_cb = NULL,
+ .client_stream_connected_cb = &echo_on_connected_send,
+ /* server initiated streams */
+ .client_stream_accepted_cb = &echo_on_accept_error,
+ .server_stream_connected_cb = &echo_on_connected_error,
+};
+
+static const quic_echo_cb_vft_t server_stream_cb_vft = {
+ /* Qsessions */
+ .quic_accepted_cb = &echo_on_accept_connect,
+ .quic_connected_cb = NULL,
+ /* client initiated streams */
+ .server_stream_accepted_cb = &echo_on_accept_error,
+ .client_stream_connected_cb = &echo_on_connected_error,
+ /* server initiated streams */
+ .client_stream_accepted_cb = &echo_on_accept_recv,
+ .server_stream_connected_cb = &echo_on_connected_send,
+};
+
+static uword
+echo_unformat_quic_setup_vft (unformat_input_t * input, va_list * args)
+{
+ echo_main_t *em = &echo_main;
+ if (unformat (input, "serverstream"))
+ {
+ clib_warning ("Using QUIC server initiated streams");
+ em->no_return = 1;
+ em->cb_vft = server_stream_cb_vft;
+ return 1;
+ }
+ else if (unformat (input, "default"))
+ return 1;
+ return 0;
+}
+
+static uword
+echo_unformat_data (unformat_input_t * input, va_list * args)
+{
+ u64 _a;
+ u64 *a = va_arg (*args, u64 *);
+ if (unformat (input, "%lluGb", &_a))
+ {
+ *a = _a << 30;
+ return 1;
+ }
+ else if (unformat (input, "%lluMb", &_a))
+ {
+ *a = _a << 20;
+ return 1;
+ }
+ else if (unformat (input, "%lluKb", &_a))
+ {
+ *a = _a << 10;
+ return 1;
+ }
+ else if (unformat (input, "%llu", a))
+ return 1;
+ return 0;
+}
+
+/*
+ *
+ * End of ECHO callback definitions
+ *
+ */
+
+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;
+ DBG ("Disonnected session handle %lx", mp->handle);
+ 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;
+
+ DBG ("Reset session handle %lx", mp->handle);
+ 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 (echo_main_t * em, session_event_t * e, int handle_rx)
+{
+ switch (e->event_type)
+ {
+ case SESSION_CTRL_EVT_BOUND:
+ DBG ("SESSION_CTRL_EVT_BOUND");
+ session_bound_handler ((session_bound_msg_t *) e->data);
+ break;
+ case SESSION_CTRL_EVT_ACCEPTED:
+ DBG ("SESSION_CTRL_EVT_ACCEPTED");
+ session_accepted_handler ((session_accepted_msg_t *) e->data);
+ break;
+ case SESSION_CTRL_EVT_CONNECTED:
+ DBG ("SESSION_CTRL_EVT_CONNECTED");
+ session_connected_handler ((session_connected_msg_t *) e->data);
+ break;
+ case SESSION_CTRL_EVT_DISCONNECTED:
+ DBG ("SESSION_CTRL_EVT_DISCONNECTED");
+ session_disconnected_handler ((session_disconnected_msg_t *) e->data);
+ break;
+ case SESSION_CTRL_EVT_RESET:
+ DBG ("SESSION_CTRL_EVT_RESET");
+ session_reset_handler ((session_reset_msg_t *) e->data);
+ break;
+ case SESSION_IO_EVT_RX:
+ DBG ("SESSION_IO_EVT_RX");
+ if (handle_rx)
+ echo_handle_rx (em, e);
+ break;
+ default:
+ clib_warning ("unhandled event %u", e->event_type);
+ }
+}
+
+static int
+clients_run (echo_main_t * em)
+{
+ svm_msg_q_msg_t msg;
+ session_event_t *e;
+ echo_session_t *s;
+ hash_pair_t *p;
+ int i;
+
+ /*
+ * Attach and connect the clients
+ */
+ if (application_attach (em))
+ return -1;
+
+ quic_echo_notify_event (em, ECHO_EVT_FIRST_QCONNECT);
+ for (i = 0; i < em->n_clients; i++)
+ echo_send_connect (em, em->uri, QUIC_SESSION_TYPE_QUIC);
+
+ wait_for_state_change (em, STATE_READY, TIMEOUT);
+
+ /*
+ * Wait for client threads to send the data
+ */
+ DBG ("Waiting for data on %u clients", em->n_clients_connected);
+ while (em->n_clients_connected)
+ {
+ if (svm_msg_q_is_empty (em->our_event_queue))
+ continue;
+ if (svm_msg_q_sub (em->our_event_queue, &msg, SVM_Q_TIMEDWAIT, 1))
+ continue;
+ e = svm_msg_q_msg_data (em->our_event_queue, &msg);
+ handle_mq_event (em, e, 0 /* handle_rx */ );
+ svm_msg_q_free_msg (em->our_event_queue, &msg);
+ }
+
+ /* *INDENT-OFF* */
+ hash_foreach_pair (p, em->session_index_by_vpp_handles,
+ ({
+ s = pool_elt_at_index (em->sessions, p->value[0]);
+ DBG ("Sending disconnect on session %lu", p->key);
+ client_disconnect_session (em, s);
+ }));
+ /* *INDENT-ON* */
+
+ wait_for_disconnected_sessions (em);
+ application_detach (em);
+ return 0;
+}
+
+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_LISTEN;
+}
+
+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
+echo_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)
+ break;
+ DBG ("Notify cause %u bytes", n_read);
+ notify_rx_data_to_vpp (s);
+ if (em->test_return_packets)
+ test_recv_bytes (em, s, em->rx_buf, n_read);
+
+ max_dequeue -= n_read;
+ s->bytes_received += n_read;
+ s->bytes_to_receive -= n_read;
+
+ /* Reflect if a non-drop session */
+ if (!em->no_return)
+ {
+ 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)
+ continue;
+ n_read -= n_sent;
+ s->bytes_to_send -= n_sent;
+ s->bytes_sent += n_sent;
+ offset += n_sent;
+ }
+ while (n_read > 0);
+ }
+ }
+ 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 (rc == ETIMEDOUT)
+ continue;
+ e = svm_msg_q_msg_data (em->our_event_queue, &msg);
+ handle_mq_event (em, e, em->state == STATE_READY /* handle_rx */ );
+ svm_msg_q_free_msg (em->our_event_queue, &msg);
+ }
+}
+
+static 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);
+}
+
+static 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);
+}
+
+static int
+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 -1;
+
+ /* Bind to uri */
+ server_send_listen (em);
+ if (wait_for_state_change (em, STATE_READY, 0))
+ return -2;
+
+ /* Enter handle event loop */
+ server_handle_mq (em);
+
+ /* Cleanup */
+ server_send_unbind (em);
+ application_detach (em);
+ fformat (stdout, "Test complete...\n");
+ return 0;
+}
+
+static void
+vl_api_disconnect_session_reply_t_handler (vl_api_disconnect_session_reply_t *
+ mp)
+{
+ echo_main_t *em = &echo_main;
+ uword *p;
+ DBG ("Got disonnected reply for session handle %lu", mp->handle);
+ 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);
+
+ if (mp->retval)
+ clib_warning ("vpp complained about disconnect: %d", ntohl (mp->retval));
+}
+
+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 _
+}
+
+static void
+print_usage_and_exit (void)
+{
+ fprintf (stderr,
+ "quic_echo [socket-name SOCKET] [client|server] [uri URI] [OPTIONS]\n"
+ "\n"
+ " socket-name PATH Specify the binary socket path to connect to VPP\n"
+ " use-svm-api Use SVM API to connect to VPP\n"
+ " test-bytes[:assert] Check data correctness when receiving (assert fails on first error)\n"
+ " fifo-size N Use N Kb fifos\n"
+ " appns NAMESPACE Use the namespace NAMESPACE\n"
+ " all-scope all-scope option\n"
+ " local-scope local-scope option\n"
+ " global-scope global-scope option\n"
+ " secret SECRET set namespace secret\n"
+ " chroot prefix PATH Use PATH as memory root path\n"
+ " quic-setup OPT OPT=serverstream : Client open N connections. On each one server opens M streams\n"
+ " by default : Client open N connections. On each one client opens M streams\n"
+ "\n"
+ " no-return Drop the data when received, dont reply\n"
+ " nclients N[/M] Open N QUIC connections, each one with M streams (M defaults to 1)\n"
+ " send N[Kb|Mb|GB] Send N [K|M|G]bytes\n"
+ " recv N[Kb|Mb|GB] Expect N [K|M|G]bytes\n"
+ " nclients N[/M] Open N QUIC connections, each one with M streams (M defaults to 1)\n");
+ exit (1);
+}
+
+
+void
+quic_echo_process_opts (int argc, char **argv)
+{
+ echo_main_t *em = &echo_main;
+ unformat_input_t _argv, *a = &_argv;
+ u32 tmp;
+ u8 *chroot_prefix;
+ u8 *uri = 0;
+
+ 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))
+ em->uri = format (0, "%s%c", uri, 0);
+ else if (unformat (a, "server"))
+ em->i_am_master = 1;
+ else if (unformat (a, "client"))
+ em->i_am_master = 0;
+ else if (unformat (a, "no-return"))
+ em->no_return = 1;
+ else if (unformat (a, "test-bytes:assert"))
+ em->test_return_packets = RETURN_PACKETS_ASSERT;
+ else if (unformat (a, "test-bytes"))
+ em->test_return_packets = RETURN_PACKETS_LOG_WRONG;
+ 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/%d", &em->n_clients, &em->n_stream_clients))
+ ;
+ else if (unformat (a, "nclients %d", &em->n_clients))
+ ;
+ else if (unformat (a, "appns %_%v%_", &em->appns_id))
+ ;
+ else if (unformat (a, "all-scope"))
+ em->appns_flags |= (APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE
+ | APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE);
+ else if (unformat (a, "local-scope"))
+ em->appns_flags = APP_OPTIONS_FLAGS_USE_LOCAL_SCOPE;
+ else if (unformat (a, "global-scope"))
+ em->appns_flags = APP_OPTIONS_FLAGS_USE_GLOBAL_SCOPE;
+ else if (unformat (a, "secret %lu", &em->appns_secret))
+ ;
+ else if (unformat (a, "quic-setup %U", echo_unformat_quic_setup_vft))
+ ;
+ else
+ if (unformat (a, "send %U", echo_unformat_data, &em->bytes_to_send))
+ ;
+ else
+ if (unformat
+ (a, "recv %U", echo_unformat_data, &em->bytes_to_receive))
+ ;
+ else if (unformat (a, "time %U:%U",
+ echo_unformat_timing_event, &em->timing_start_event,
+ echo_unformat_timing_event, &em->timing_end_event))
+ ;
+ else
+ print_usage_and_exit ();
+ }
+}
+
+int
+main (int argc, char **argv)
+{
+ echo_main_t *em = &echo_main;
+ fifo_segment_main_t *sm = &em->segment_main;
+ char *app_name;
+ int i, rv;
+ u32 n_clients;
+
+ 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->shared_segment_handles = hash_create (0, sizeof (uword));
+ em->my_pid = getpid ();
+ em->socket_name = format (0, "%s%c", API_SOCKET_FILE, 0);
+ em->use_sock_api = 1;
+ em->fifo_size = 64 << 10;
+ em->n_clients = 1;
+ em->n_stream_clients = 1;
+ em->max_test_msg = 50;
+ em->time_to_stop = 0;
+ em->i_am_master = 1;
+ em->test_return_packets = RETURN_PACKETS_NOTEST;
+ em->timing_start_event = ECHO_EVT_FIRST_QCONNECT;
+ em->timing_end_event = ECHO_EVT_LAST_BYTE;
+ em->bytes_to_receive = 64 << 10;
+ em->bytes_to_send = 64 << 10;
+ em->uri = format (0, "%s%c", "quic://0.0.0.0/1234", 0);
+ em->cb_vft = default_cb_vft;
+ quic_echo_process_opts (argc, argv);
+
+ n_clients = em->n_clients * em->n_stream_clients;
+ vec_validate (em->client_thread_handles, n_clients - 1);
+ vec_validate (em->thread_args, n_clients - 1);
+ clib_time_init (&em->clib_time);
+ init_error_string_table (em);
+ fifo_segment_main_init (sm, HIGH_SEGMENT_BASEVA, 20);
+ clib_spinlock_init (&em->segment_handles_lock);
+ vec_validate (em->rx_buf, 4 << 20);
+ 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;
+
+ setup_signal_handlers ();
+ quic_echo_api_hookup (em);
+
+ app_name = em->i_am_master ? "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);
+ }
+
+ quic_echo_notify_event (em, ECHO_EVT_START);
+ if (em->i_am_master)
+ rv = server_run (em);
+ else
+ rv = clients_run (em);
+ if (rv)
+ exit (rv);
+ quic_echo_notify_event (em, ECHO_EVT_EXIT);
+ print_global_stats (em);
+
+ /* Make sure detach finishes */
+ if (wait_for_state_change (em, STATE_DETACHED, TIMEOUT))
+ exit (-1);
+ disconnect_from_vpp (em);
+ exit (0);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
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:
+ */
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:
+ */