TCP/session improvements

[vpp.git] / src / vnet / tcp / builtin_server.c

diff --git a/src/vnet/tcp/builtin_server.c b/src/vnet/tcp/builtin_server.c
index be65642..efd26e9 100644 (file)
--- a/src/vnet/tcp/builtin_server.c
+++ b/src/vnet/tcp/builtin_server.c
@@ -18,11 +18,27 @@
 #include <vnet/session/application.h>
 #include <vnet/session/application_interface.h>
 
+typedef struct
+{
+  u8 *rx_buf;
+  unix_shared_memory_queue_t **vpp_queue;
+  u32 byte_index;
+  vlib_main_t *vlib_main;
+} builtin_server_main_t;
+
+builtin_server_main_t builtin_server_main;
+
+
 int
 builtin_session_accept_callback (stream_session_t * s)
 {
+  builtin_server_main_t *bsm = &builtin_server_main;
   clib_warning ("called...");
+
+  bsm->vpp_queue[s->thread_index] =
+    session_manager_get_vpp_event_queue (s->thread_index);
   s->session_state = SESSION_STATE_READY;
+  bsm->byte_index = 0;
   return 0;
 }
 
@@ -30,8 +46,19 @@ void
 builtin_session_disconnect_callback (stream_session_t * s)
 {
   clib_warning ("called...");
+
+  vnet_disconnect_session (s->session_index, s->thread_index);
+}
+
+void
+builtin_session_reset_callback (stream_session_t * s)
+{
+  clib_warning ("called.. ");
+
+  stream_session_cleanup (s);
 }
 
+
 int
 builtin_session_connected_callback (u32 client_index,
                                    stream_session_t * s, u8 is_fail)
@@ -55,10 +82,95 @@ builtin_redirect_connect_callback (u32 client_index, void *mp)
   return -1;
 }
 
+void
+test_bytes (builtin_server_main_t * bsm, int actual_transfer)
+{
+  int i;
+
+  for (i = 0; i < actual_transfer; i++)
+    {
+      if (bsm->rx_buf[i] != ((bsm->byte_index + i) & 0xff))
+       {
+         clib_warning ("at %d expected %d got %d", bsm->byte_index + i,
+                       (bsm->byte_index + i) & 0xff, bsm->rx_buf[i]);
+       }
+    }
+  bsm->byte_index += actual_transfer;
+}
+
 int
 builtin_server_rx_callback (stream_session_t * s)
 {
-  clib_warning ("called...");
+  u32 n_written, max_dequeue, max_enqueue, max_transfer;
+  int actual_transfer;
+  svm_fifo_t *tx_fifo, *rx_fifo;
+  builtin_server_main_t *bsm = &builtin_server_main;
+  session_fifo_event_t evt;
+  static int serial_number = 0;
+
+  max_dequeue = svm_fifo_max_dequeue (s->server_rx_fifo);
+  max_enqueue = svm_fifo_max_enqueue (s->server_tx_fifo);
+
+  if (PREDICT_FALSE (max_dequeue == 0))
+    {
+      return 0;
+    }
+
+  tx_fifo = s->server_tx_fifo;
+  rx_fifo = s->server_rx_fifo;
+
+  /* Number of bytes we're going to copy */
+  max_transfer = (max_dequeue < max_enqueue) ? max_dequeue : max_enqueue;
+
+  /* No space in tx fifo */
+  if (PREDICT_FALSE (max_transfer == 0))
+    {
+      /* XXX timeout for session that are stuck */
+
+      /* Program self-tap to retry */
+      if (svm_fifo_set_event (rx_fifo))
+       {
+         evt.fifo = rx_fifo;
+         evt.event_type = FIFO_EVENT_BUILTIN_RX;
+         evt.event_id = 0;
+         unix_shared_memory_queue_add (bsm->vpp_queue[s->thread_index],
+                                       (u8 *) & evt,
+                                       0 /* do wait for mutex */ );
+       }
+
+      return 0;
+    }
+
+  svm_fifo_unset_event (rx_fifo);
+
+  vec_validate (bsm->rx_buf, max_transfer - 1);
+  _vec_len (bsm->rx_buf) = max_transfer;
+
+  actual_transfer = svm_fifo_dequeue_nowait (rx_fifo, 0, max_transfer,
+                                            bsm->rx_buf);
+  ASSERT (actual_transfer == max_transfer);
+
+//  test_bytes (bsm, actual_transfer);
+
+  /*
+   * Echo back
+   */
+
+  n_written =
+    svm_fifo_enqueue_nowait (tx_fifo, 0, actual_transfer, bsm->rx_buf);
+  ASSERT (n_written == max_transfer);
+
+  if (svm_fifo_set_event (tx_fifo))
+    {
+      /* Fabricate TX event, send to vpp */
+      evt.fifo = tx_fifo;
+      evt.event_type = FIFO_EVENT_SERVER_TX;
+      evt.event_id = serial_number++;
+
+      unix_shared_memory_queue_add (bsm->vpp_queue[s->thread_index],
+                                   (u8 *) & evt, 0 /* do wait for mutex */ );
+    }
+
   return 0;
 }
 
@@ -68,7 +180,8 @@ static session_cb_vft_t builtin_session_cb_vft = {
   .session_connected_callback = builtin_session_connected_callback,
   .add_segment_callback = builtin_add_segment_callback,
   .redirect_connect_callback = builtin_redirect_connect_callback,
-  .builtin_server_rx_callback = builtin_server_rx_callback
+  .builtin_server_rx_callback = builtin_server_rx_callback,
+  .session_reset_callback = builtin_session_reset_callback
 };
 
 static int
@@ -77,15 +190,20 @@ server_create (vlib_main_t * vm)
   vnet_bind_args_t _a, *a = &_a;
   u64 options[SESSION_OPTIONS_N_OPTIONS];
   char segment_name[128];
+  u32 num_threads;
+  vlib_thread_main_t *vtm = vlib_get_thread_main ();
+
+  num_threads = 1 /* main thread */  + vtm->n_threads;
+  vec_validate (builtin_server_main.vpp_queue, num_threads - 1);
 
   memset (a, 0, sizeof (*a));
   memset (options, 0, sizeof (options));
 
-  a->uri = "tcp://0.0.0.0/80";
+  a->uri = "tcp://0.0.0.0/1234";
   a->api_client_index = ~0;
   a->session_cb_vft = &builtin_session_cb_vft;
   a->options = options;
-  a->options[SESSION_OPTIONS_SEGMENT_SIZE] = 256 << 10;
+  a->options[SESSION_OPTIONS_SEGMENT_SIZE] = 128 << 20;
   a->options[SESSION_OPTIONS_RX_FIFO_SIZE] = 64 << 10;
   a->options[SESSION_OPTIONS_TX_FIFO_SIZE] = 64 << 10;
   a->segment_name = segment_name;
@@ -110,6 +228,7 @@ server_create_command_fn (vlib_main_t * vm,
     }
 #endif
 
+  vnet_session_enable_disable (vm, 1 /* turn on TCP, etc. */ );
   rv = server_create (vm);
   switch (rv)
     {
@@ -121,10 +240,14 @@ server_create_command_fn (vlib_main_t * vm,
   return 0;
 }
 
+/* *INDENT-OFF* */
 VLIB_CLI_COMMAND (server_create_command, static) =
 {
-.path = "test server",.short_help = "test server",.function =
-    server_create_command_fn,};
+  .path = "test server",
+  .short_help = "test server",
+  .function = server_create_command_fn,
+};
+/* *INDENT-ON* */
 
 /*
 * fd.io coding-style-patch-verification: ON