Horizontal (nSessions) scaling draft

- Data structure preallocation.
- Input state machine fixes for mid-stream 3-way handshake retries.
- Batch connections in the builtin_client
- Multiple private fifo segment support
- Fix elog simultaneous event type registration
- Fix sacks when segment hole is added after highest sacked
- Add "accepting" session state for sessions pending accept
- Add ssvm non-recursive locking
- Estimate RTT for syn-ack
- Don't init fifo pointers. We're using relative offsets for ooo
  segments
- CLI to dump individual session

Change-Id: Ie0598563fd246537bafba4feed7985478ea1d415
Signed-off-by: Dave Barach <dbarach@cisco.com>
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 5 insertions, 18 deletions

diff --git a/src/vnet/session/node.c b/src/vnet/session/node.c
index b24f5fd994d..56e626379a5 100644
--- a/src/vnet/session/node.c
+++ b/src/vnet/session/node.c
@@ -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
@@ -569,7 +557,6 @@ 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;