udp/session: refactor to support dgram mode

- adds session layer support for datagram based protocols
- updates udp to work in pure connectionless and datagram mode. The
  existing connected mode is now 'accessible' for apps as a dummy UDPC,
  as in, connected udp, protocol.
- updates udp_echo, echo client, echo server code to work in datagram
  mode.

Change-Id: I2960c0d2d246cb166005f545794ec31fe0d546dd
Signed-off-by: Florin Coras <fcoras@cisco.com>

1 files changed, 4 insertions, 5 deletions

diff --git a/src/vnet/session-apps/echo_client.h b/src/vnet/session-apps/echo_client.h
index 5712da5b8c8..344e43865b5 100644
--- a/src/vnet/session-apps/echo_client.h
+++ b/src/vnet/session-apps/echo_client.h
@@ -30,15 +30,13 @@
 
 typedef struct
 {
+  app_session_t data;
   u64 bytes_to_send;
   u64 bytes_sent;
   u64 bytes_to_receive;
   u64 bytes_received;
-
-  svm_fifo_t *server_rx_fifo;
-  svm_fifo_t *server_tx_fifo;
-
   u64 vpp_session_handle;
+  u8 thread_index;
 } session_t;
 
 typedef struct
@@ -46,7 +44,7 @@ typedef struct
   /*
    * Application setup parameters
    */
-  svm_queue_t *vl_input_queue;	/**< vpe input queue */
+  svm_queue_t *vl_input_queue;		/**< vpe input queue */
   svm_queue_t **vpp_event_queue;
 
   u32 cli_node_index;			/**< cli process node index */
@@ -65,6 +63,7 @@ typedef struct
   u32 private_segment_count;		/**< Number of private fifo segs */
   u32 private_segment_size;		/**< size of private fifo segs */
   u32 tls_engine;			/**< TLS engine mbedtls/openssl */
+  u8 is_dgram;
   /*
    * Test state variables
    */