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>
diff --git a/src/vnet/udp/udp_input.c b/src/vnet/udp/udp_input.c
index e6b4f8f..9a8ff07 100644
--- a/src/vnet/udp/udp_input.c
+++ b/src/vnet/udp/udp_input.c
@@ -123,7 +123,7 @@
 	  /* lookup session */
 	  s0 = stream_session_lookup4 (&ip0->dst_address, &ip0->src_address,
 				       udp0->dst_port, udp0->src_port,
-				       SESSION_TYPE_IP4_UDP, my_thread_index);
+				       SESSION_TYPE_IP4_UDP);
 
 	  /* no listener */
 	  if (PREDICT_FALSE (s0 == 0))