Improvements to tcp rx path and debugging

[vpp.git] / src / vnet / session / node.c

diff --git a/src/vnet/session/node.c b/src/vnet/session/node.c
index b24f5fd..8d703b0 100644 (file)
--- a/src/vnet/session/node.c
+++ b/src/vnet/session/node.c
@@ -256,7 +256,7 @@ session_tx_fifo_read_and_snd_i (vlib_main_t * vm, vlib_node_runtime_t * node,
          b0 = vlib_get_buffer (vm, bi0);
          b0->error = 0;
          b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID
-           | VNET_BUFFER_LOCALLY_ORIGINATED;
+           | VNET_BUFFER_F_LOCALLY_ORIGINATED;
          b0->current_data = 0;
          b0->total_length_not_including_first_buffer = 0;
 
@@ -378,24 +378,12 @@ session_tx_fifo_dequeue_and_snd (vlib_main_t * vm, vlib_node_runtime_t * node,
                                         n_tx_pkts, 0);
 }
 
-stream_session_t *
-session_event_get_session (session_fifo_event_t * e0, u8 thread_index)
+always_inline stream_session_t *
+session_event_get_session (session_fifo_event_t * e, u8 thread_index)
 {
-  svm_fifo_t *f0;
-  stream_session_t *s0;
-  u32 session_index0;
-
-  f0 = e0->fifo;
-  session_index0 = f0->master_session_index;
-
-  /* $$$ add multiple event queues, per vpp worker thread */
-  ASSERT (f0->master_thread_index == thread_index);
-
-  s0 = stream_session_get_if_valid (session_index0, thread_index);
-
-  ASSERT (s0 == 0 || s0->thread_index == thread_index);
-
-  return s0;
+  ASSERT (e->fifo->master_thread_index == thread_index);
+  return stream_session_get_if_valid (e->fifo->master_session_index,
+                                     thread_index);
 }
 
 void
@@ -455,6 +443,79 @@ dump_thread_0_event_queue (void)
     }
 }
 
+static u8
+session_node_cmp_event (session_fifo_event_t * e, svm_fifo_t * f)
+{
+  stream_session_t *s;
+  switch (e->event_type)
+    {
+    case FIFO_EVENT_APP_RX:
+    case FIFO_EVENT_APP_TX:
+    case FIFO_EVENT_BUILTIN_RX:
+      if (e->fifo == f)
+       return 1;
+      break;
+    case FIFO_EVENT_DISCONNECT:
+      break;
+    case FIFO_EVENT_RPC:
+      s = stream_session_get_from_handle (e->session_handle);
+      if (!s)
+       {
+         clib_warning ("session has event but doesn't exist!");
+         break;
+       }
+      if (s->server_rx_fifo == f || s->server_tx_fifo == f)
+       return 1;
+      break;
+    default:
+      break;
+    }
+  return 0;
+}
+
+u8
+session_node_lookup_fifo_event (svm_fifo_t * f, session_fifo_event_t * e)
+{
+  session_manager_main_t *smm = vnet_get_session_manager_main ();
+  unix_shared_memory_queue_t *q;
+  session_fifo_event_t *pending_event_vector, *evt;
+  int i, index, found = 0;
+  i8 *headp;
+  u8 thread_index;
+
+  ASSERT (e);
+  thread_index = f->master_thread_index;
+  /*
+   * Search evt queue
+   */
+  q = smm->vpp_event_queues[thread_index];
+  index = q->head;
+  for (i = 0; i < q->cursize; i++)
+    {
+      headp = (i8 *) (&q->data[0] + q->elsize * index);
+      clib_memcpy (e, headp, q->elsize);
+      found = session_node_cmp_event (e, f);
+      if (found)
+       break;
+      if (++index == q->maxsize)
+       index = 0;
+    }
+  /*
+   * Search pending events vector
+   */
+  pending_event_vector = smm->pending_event_vector[thread_index];
+  vec_foreach (evt, pending_event_vector)
+  {
+    found = session_node_cmp_event (evt, f);
+    if (found)
+      {
+       clib_memcpy (e, evt, sizeof (*evt));
+       break;
+      }
+  }
+  return found;
+}
+
 static uword
 session_queue_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node,
                       vlib_frame_t * frame)
@@ -569,7 +630,6 @@ skip_dequeue:
        case FIFO_EVENT_BUILTIN_RX:
          s0 = session_event_get_session (e0, my_thread_index);
          svm_fifo_unset_event (s0->server_rx_fifo);
-         /* Get session's server */
          app = application_get (s0->app_index);
          app->cb_fns.builtin_server_rx_callback (s0);
          break;