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authorDave Barach <dave@barachs.net>2017-02-28 15:15:56 -0500
committerDamjan Marion <dmarion.lists@gmail.com>2017-03-01 20:25:48 +0000
commit68b0fb0c620c7451ef1a6380c43c39de6614db51 (patch)
treef4188fa09723152f3ebfcebbbe4cacad903e0cf1 /src/uri/uri_udp_test.c
parentf869028740aaebeb0375077d4d84fa07a17fff1a (diff)
VPP-598: tcp stack initial commit
Change-Id: I49e5ce0aae6e4ff634024387ceaf7dbc432a0351 Signed-off-by: Dave Barach <dave@barachs.net> Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/uri/uri_udp_test.c')
-rw-r--r--src/uri/uri_udp_test.c553
1 files changed, 553 insertions, 0 deletions
diff --git a/src/uri/uri_udp_test.c b/src/uri/uri_udp_test.c
new file mode 100644
index 00000000000..6f5284c9338
--- /dev/null
+++ b/src/uri/uri_udp_test.c
@@ -0,0 +1,553 @@
+/*
+ * 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 <svm_fifo_segment.h>
+
+#include <vnet/uri/uri.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
+
+/* Satisfy external references when not linking with -lvlib */
+vlib_main_t vlib_global_main;
+vlib_main_t **vlib_mains;
+
+typedef enum
+{
+ STATE_START,
+ STATE_READY,
+ STATE_DISCONNECTING,
+} connection_state_t;
+
+typedef struct
+{
+ svm_fifo_t *server_rx_fifo;
+ svm_fifo_t *server_tx_fifo;
+} session_t;
+
+typedef struct
+{
+ /* vpe input queue */
+ unix_shared_memory_queue_t *vl_input_queue;
+
+ /* API client handle */
+ u32 my_client_index;
+
+ /* The URI we're playing with */
+ u8 *uri;
+
+ /* Session pool */
+ session_t *sessions;
+
+ /* Hash table for disconnect processing */
+ uword *session_index_by_vpp_handles;
+
+ /* fifo segment */
+ svm_fifo_segment_private_t *seg;
+
+ /* intermediate rx buffer */
+ u8 *rx_buf;
+
+ /* Our event queue */
+ unix_shared_memory_queue_t *our_event_queue;
+
+ /* $$$ single thread only for the moment */
+ unix_shared_memory_queue_t *vpp_event_queue;
+
+ /* 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;
+
+ /* VNET_API_ERROR_FOO -> "Foo" hash table */
+ uword *error_string_by_error_number;
+} uri_udp_test_main_t;
+
+#if CLIB_DEBUG > 0
+#define NITER 1000
+#else
+#define NITER 1000000
+#endif
+
+uri_udp_test_main_t uri_udp_test_main;
+
+static void
+stop_signal (int signum)
+{
+ uri_udp_test_main_t *um = &uri_udp_test_main;
+
+ um->time_to_stop = 1;
+}
+
+static void
+stats_signal (int signum)
+{
+ uri_udp_test_main_t *um = &uri_udp_test_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;
+}
+
+u8 *
+format_api_error (u8 * s, va_list * args)
+{
+ uri_udp_test_main_t *utm = va_arg (*args, uri_udp_test_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 (uri_udp_test_main_t * utm, connection_state_t state)
+{
+ f64 timeout = clib_time_now (&utm->clib_time) + 5.0;
+
+ while (clib_time_now (&utm->clib_time) < timeout)
+ {
+ if (utm->state == state)
+ return 0;
+ }
+ return -1;
+}
+
+static void
+vl_api_bind_uri_reply_t_handler (vl_api_bind_uri_reply_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ svm_fifo_segment_create_args_t _a, *a = &_a;
+ int rv;
+
+ if (mp->segment_name_length == 0)
+ {
+ clib_warning ("segment_name_length zero");
+ return;
+ }
+
+ a->segment_name = (char *) mp->segment_name;
+
+ /* Attach to the segment vpp created */
+ rv = svm_fifo_segment_attach (a);
+ if (rv)
+ {
+ clib_warning ("sm_fifo_segment_create ('%s') failed", mp->segment_name);
+ return;
+ }
+
+ utm->our_event_queue = (unix_shared_memory_queue_t *)
+ mp->server_event_queue_address;
+
+ utm->state = STATE_READY;
+}
+
+static void
+vl_api_unbind_uri_reply_t_handler (vl_api_unbind_uri_reply_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+
+ if (mp->retval != 0)
+ clib_warning ("returned %d", ntohl (mp->retval));
+
+ utm->state = STATE_START;
+}
+
+static void
+vl_api_accept_session_t_handler (vl_api_accept_session_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ vl_api_accept_session_reply_t *rmp;
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ session_t *session;
+ static f64 start_time;
+ u64 key;
+
+ if (start_time == 0.0)
+ start_time = clib_time_now (&utm->clib_time);
+
+ utm->vpp_event_queue = (unix_shared_memory_queue_t *)
+ mp->vpp_event_queue_address;
+
+ pool_get (utm->sessions, session);
+
+ rx_fifo = (svm_fifo_t *) mp->server_rx_fifo;
+ rx_fifo->client_session_index = session - utm->sessions;
+ tx_fifo = (svm_fifo_t *) mp->server_tx_fifo;
+ tx_fifo->client_session_index = session - utm->sessions;
+
+ session->server_rx_fifo = rx_fifo;
+ session->server_tx_fifo = tx_fifo;
+
+ key = (((u64) mp->session_thread_index) << 32) | (u64) mp->session_index;
+
+ hash_set (utm->session_index_by_vpp_handles, key, session - utm->sessions);
+
+ utm->state = STATE_READY;
+
+ 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));
+ }
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_ACCEPT_SESSION_REPLY);
+ rmp->session_type = mp->session_type;
+ rmp->session_index = mp->session_index;
+ rmp->session_thread_index = mp->session_thread_index;
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & rmp);
+}
+
+static void
+vl_api_disconnect_session_t_handler (vl_api_disconnect_session_t * mp)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ session_t *session;
+ vl_api_disconnect_session_reply_t *rmp;
+ uword *p;
+ int rv = 0;
+ u64 key;
+
+ key = (((u64) mp->session_thread_index) << 32) | (u64) mp->session_index;
+
+ p = hash_get (utm->session_index_by_vpp_handles, key);
+
+ if (p)
+ {
+ session = pool_elt_at_index (utm->sessions, p[0]);
+ hash_unset (utm->session_index_by_vpp_handles, key);
+ pool_put (utm->sessions, session);
+ }
+ else
+ {
+ clib_warning ("couldn't find session key %llx", key);
+ rv = -11;
+ }
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_DISCONNECT_SESSION_REPLY);
+ rmp->retval = rv;
+ rmp->session_index = mp->session_index;
+ rmp->session_thread_index = mp->session_thread_index;
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & rmp);
+}
+
+#define foreach_uri_msg \
+_(BIND_URI_REPLY, bind_uri_reply) \
+_(UNBIND_URI_REPLY, unbind_uri_reply) \
+_(ACCEPT_SESSION, accept_session) \
+_(DISCONNECT_SESSION, disconnect_session)
+
+void
+uri_api_hookup (uri_udp_test_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_uri_msg;
+#undef _
+
+}
+
+
+int
+connect_to_vpp (char *name)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_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 (uri_udp_test_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
+handle_fifo_event_server_rx (uri_udp_test_main_t * utm,
+ session_fifo_event_t * e)
+{
+ svm_fifo_t *rx_fifo, *tx_fifo;
+ int nbytes;
+
+ session_fifo_event_t evt;
+ unix_shared_memory_queue_t *q;
+ int rv;
+
+ rx_fifo = e->fifo;
+ tx_fifo = utm->sessions[rx_fifo->client_session_index].server_tx_fifo;
+
+ do
+ {
+ nbytes = svm_fifo_dequeue_nowait (rx_fifo, 0,
+ vec_len (utm->rx_buf), utm->rx_buf);
+ }
+ while (nbytes <= 0);
+ do
+ {
+ rv = svm_fifo_enqueue_nowait (tx_fifo, 0, nbytes, utm->rx_buf);
+ }
+ while (rv == -2);
+
+ /* Fabricate TX event, send to vpp */
+ evt.fifo = tx_fifo;
+ evt.event_type = FIFO_EVENT_SERVER_TX;
+ /* $$$$ for event logging */
+ evt.enqueue_length = nbytes;
+ evt.event_id = e->event_id;
+ q = utm->vpp_event_queue;
+ unix_shared_memory_queue_add (q, (u8 *) & evt, 0 /* do wait for mutex */ );
+}
+
+void
+handle_event_queue (uri_udp_test_main_t * utm)
+{
+ session_fifo_event_t _e, *e = &_e;;
+
+ while (1)
+ {
+ unix_shared_memory_queue_sub (utm->our_event_queue, (u8 *) e,
+ 0 /* nowait */ );
+ switch (e->event_type)
+ {
+ case FIFO_EVENT_SERVER_RX:
+ handle_fifo_event_server_rx (utm, e);
+ break;
+
+ case FIFO_EVENT_SERVER_EXIT:
+ return;
+
+ default:
+ clib_warning ("unknown event type %d", e->event_type);
+ break;
+ }
+ if (PREDICT_FALSE (utm->time_to_stop == 1))
+ break;
+ if (PREDICT_FALSE (utm->time_to_print_stats == 1))
+ {
+ utm->time_to_print_stats = 0;
+ fformat (stdout, "%d connections\n", pool_elts (utm->sessions));
+ }
+ }
+}
+
+void
+uri_udp_test (uri_udp_test_main_t * utm)
+{
+ vl_api_bind_uri_t *bmp;
+ vl_api_unbind_uri_t *ump;
+
+ bmp = vl_msg_api_alloc (sizeof (*bmp));
+ 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);
+ bmp->segment_size = 2 << 30;
+ memcpy (bmp->uri, utm->uri, vec_len (utm->uri));
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & bmp);
+
+ if (wait_for_state_change (utm, STATE_READY))
+ {
+ clib_warning ("timeout waiting for STATE_READY");
+ return;
+ }
+
+ handle_event_queue (utm);
+
+ ump = vl_msg_api_alloc (sizeof (*ump));
+ 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->uri, vec_len (utm->uri));
+ vl_msg_api_send_shmem (utm->vl_input_queue, (u8 *) & ump);
+
+ if (wait_for_state_change (utm, STATE_START))
+ {
+ clib_warning ("timeout waiting for STATE_START");
+ return;
+ }
+
+ fformat (stdout, "Test complete...\n");
+}
+
+int
+main (int argc, char **argv)
+{
+ uri_udp_test_main_t *utm = &uri_udp_test_main;
+ unformat_input_t _argv, *a = &_argv;
+ u8 *chroot_prefix;
+ u8 *heap;
+ u8 *bind_name = (u8 *) "udp4:1234";
+ mheap_t *h;
+ session_t *session;
+ int i;
+
+ clib_mem_init (0, 256 << 20);
+
+ heap = clib_mem_get_per_cpu_heap ();
+ h = mheap_header (heap);
+
+ /* make the main heap thread-safe */
+ h->flags |= MHEAP_FLAG_THREAD_SAFE;
+
+ vec_validate (utm->rx_buf, 8192);
+
+ utm->session_index_by_vpp_handles = hash_create (0, sizeof (uword));
+
+ clib_time_init (&utm->clib_time);
+ init_error_string_table (utm);
+ svm_fifo_segment_init (0x200000000ULL, 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", &bind_name))
+ ;
+ else
+ {
+ fformat (stderr, "%s: usage [master|slave]\n");
+ exit (1);
+ }
+ }
+
+ utm->uri = format (0, "%s%c", bind_name, 0);
+
+ setup_signal_handlers ();
+
+ uri_api_hookup (utm);
+
+ if (connect_to_vpp ("uri_udp_test") < 0)
+ {
+ svm_region_exit ();
+ fformat (stderr, "Couldn't connect to vpe, exiting...\n");
+ exit (1);
+ }
+
+ /* $$$$ hack preallocation */
+ for (i = 0; i < 200000; i++)
+ {
+ pool_get (utm->sessions, session);
+ memset (session, 0, sizeof (*session));
+ }
+ for (i = 0; i < 200000; i++)
+ pool_put_index (utm->sessions, i);
+
+ uri_udp_test (utm);
+
+ 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);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */