TCP/session improvements

- Added svm fifo flag for tracking fifo dequeue events (replaces event
  length). Updated all code to switch to the new scheme.
- More session debugging
- Fix peek index wrap
- Add a trivial socket test client
- Fast retransmit/cc fixes
- tx and rx SACK fixes and unit testing
- SRTT computation fix
- remove dupack/ack burst filters
- improve ack rx
- improved segment rx
- builtin client test code

Change-Id: Ic4eb2d5ca446eb2260ccd3ccbcdaa73c64e7f4e1
Signed-off-by: Florin Coras <fcoras@cisco.com>
Signed-off-by: Dave Barach <dbarach@cisco.com>

1 files changed, 131 insertions, 0 deletions

diff --git a/src/vnet/tcp/builtin_client.h b/src/vnet/tcp/builtin_client.h
new file mode 100644
index 00000000..64030302
--- /dev/null
+++ b/src/vnet/tcp/builtin_client.h
@@ -0,0 +1,131 @@
+
+/*
+ * tclient.h - skeleton vpp engine plug-in header file
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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.
+ */
+#ifndef __included_tclient_h__
+#define __included_tclient_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+
+#include <vppinfra/hash.h>
+#include <vppinfra/error.h>
+#include <vlibmemory/unix_shared_memory_queue.h>
+#include <svm/svm_fifo_segment.h>
+#include <vnet/session/session.h>
+#include <vnet/session/application_interface.h>
+
+typedef struct
+{
+  u32 bytes_to_send;
+  u32 bytes_sent;
+  u32 bytes_to_receive;
+  u32 bytes_received;
+
+  svm_fifo_t *server_rx_fifo;
+  svm_fifo_t *server_tx_fifo;
+
+  u32 vpp_session_index;
+  u32 vpp_session_thread;
+} session_t;
+
+typedef struct
+{
+  /* API message ID base */
+  u16 msg_id_base;
+
+  /* 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;
+
+  /* intermediate rx buffer */
+  u8 *rx_buf;
+
+  /* URI for slave's connect */
+  u8 *connect_uri;
+
+  u32 connected_session_index;
+
+  int i_am_master;
+
+  /* drop all packets */
+  int drop_packets;
+
+  /* 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;
+
+  pid_t my_pid;
+
+  /* For deadman timers */
+  clib_time_t clib_time;
+
+  /* Connection counts */
+  u32 expected_connections;
+  volatile u32 ready_connections;
+
+  /* Signal variables */
+  volatile int run_test;
+
+  /* Number of iterations */
+  int n_iterations;
+
+  /* Bytes to send */
+  u32 bytes_to_send;
+
+  u32 configured_segment_size;
+
+  /* VNET_API_ERROR_FOO -> "Foo" hash table */
+  uword *error_string_by_error_number;
+
+  u8 *connect_test_data;
+  pthread_t client_thread_handle;
+  u32 client_bytes_received;
+  u8 test_return_packets;
+
+  /* convenience */
+  vlib_main_t *vlib_main;
+  vnet_main_t *vnet_main;
+  ethernet_main_t *ethernet_main;
+} tclient_main_t;
+
+tclient_main_t tclient_main;
+
+vlib_node_registration_t tclient_node;
+
+#endif /* __included_tclient_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */