session: cleanup part 3

[vpp.git] / src / vnet / session / transport_interface.h

diff --git a/src/vnet/session/transport_interface.h b/src/vnet/session/transport_interface.h
index 04a5ff2..1230486 100644 (file)
--- a/src/vnet/session/transport_interface.h
+++ b/src/vnet/session/transport_interface.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
  * 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:
@@ -19,22 +19,6 @@
 #include <vnet/vnet.h>
 #include <vnet/session/transport.h>
 
-typedef enum transport_dequeue_type_
-{
-  TRANSPORT_TX_PEEK,           /**< reliable transport protos */
-  TRANSPORT_TX_DEQUEUE,                /**< unreliable transport protos */
-  TRANSPORT_TX_INTERNAL,               /**< apps acting as transports */
-  TRANSPORT_TX_N_FNS
-} transport_tx_fn_type_t;
-
-typedef enum transport_service_type_
-{
-  TRANSPORT_SERVICE_VC,                /**< virtual circuit service */
-  TRANSPORT_SERVICE_CL,                /**< connectionless service */
-  TRANSPORT_SERVICE_APP,               /**< app transport service */
-  TRANSPORT_N_SERVICES
-} transport_service_type_t;
-
 /*
  * Transport protocol virtual function table
  */
@@ -46,7 +30,7 @@ typedef struct _transport_proto_vft
    */
   u32 (*bind) (u32 session_index, transport_endpoint_t * lcl);
   u32 (*unbind) (u32);
-  int (*open) (transport_endpoint_t * rmt);
+  int (*open) (transport_endpoint_cfg_t * rmt);
   void (*close) (u32 conn_index, u32 thread_index);
   void (*cleanup) (u32 conn_index, u32 thread_index);
   clib_error_t *(*enable) (vlib_main_t * vm, u8 is_en);
@@ -60,6 +44,7 @@ typedef struct _transport_proto_vft
   u32 (*send_space) (transport_connection_t * tc);
   u32 (*tx_fifo_offset) (transport_connection_t * tc);
   void (*update_time) (f64 time_now, u8 thread_index);
+  void (*flush_data) (transport_connection_t *tconn);
 
   /*
    * Connection retrieval
@@ -88,7 +73,7 @@ extern transport_proto_vft_t *tp_vfts;
 #define transport_proto_foreach(VAR, BODY)                     \
 do {                                                           \
     for (VAR = 0; VAR < vec_len (tp_vfts); VAR++)              \
-      if (tp_vfts[VAR].push_header != 0)                               \
+      if (tp_vfts[VAR].push_header != 0)                       \
        do { BODY; } while (0);                                 \
 } while (0)
 
@@ -97,8 +82,95 @@ void transport_register_protocol (transport_proto_t transport_proto,
                                  fib_protocol_t fib_proto, u32 output_node);
 transport_proto_vft_t *transport_protocol_get_vft (transport_proto_t tp);
 void transport_update_time (f64 time_now, u8 thread_index);
+transport_connection_t *transport_get_connection (transport_proto_t tp,
+                                                 u32 conn_index,
+                                                 u8 thread_index);
+transport_connection_t *transport_get_listener (transport_proto_t tp,
+                                               u32 conn_index);
 void transport_enable_disable (vlib_main_t * vm, u8 is_en);
 
+always_inline u32
+transport_elog_track_index (transport_connection_t * tc)
+{
+#if TRANSPORT_DEBUG
+  return tc->elog_track.track_index_plus_one - 1;
+#else
+  return ~0;
+#endif
+}
+
+void transport_connection_tx_pacer_reset (transport_connection_t * tc,
+                                         u32 rate_bytes_per_sec,
+                                         u32 initial_bucket, u64 time_now);
+/**
+ * Initialize tx pacer for connection
+ *
+ * @param tc                           transport connection
+ * @param rate_bytes_per_second                initial byte rate
+ * @param burst_bytes                  initial burst size in bytes
+ */
+void transport_connection_tx_pacer_init (transport_connection_t * tc,
+                                        u32 rate_bytes_per_sec,
+                                        u32 initial_bucket);
+
+/**
+ * Update tx pacer pacing rate
+ *
+ * @param tc                   transport connection
+ * @param bytes_per_sec                new pacing rate
+ */
+void transport_connection_tx_pacer_update (transport_connection_t * tc,
+                                          u64 bytes_per_sec);
+
+/**
+ * Get maximum tx burst allowed for transport connection
+ *
+ * @param tc           transport connection
+ * @param time_now     current cpu time as returned by @ref clib_cpu_time_now
+ * @param mss          transport's mss
+ */
+u32 transport_connection_snd_space (transport_connection_t * tc,
+                                   u64 time_now, u16 mss);
+
+u32 transport_connection_tx_pacer_burst (transport_connection_t * tc,
+                                        u64 time_now);
+
+/**
+ * Initialize period for tx pacers
+ *
+ * Defines a unit of time with respect to number of cpu cycles that is to
+ * be used by all tx pacers.
+ */
+void transport_init_tx_pacers_period (void);
+
+/**
+ * Check if transport connection is paced
+ */
+always_inline u8
+transport_connection_is_tx_paced (transport_connection_t * tc)
+{
+  return (tc->flags & TRANSPORT_CONNECTION_F_IS_TX_PACED);
+}
+
+u8 *format_transport_pacer (u8 * s, va_list * args);
+
+/**
+ * Update tx byte stats for transport connection
+ *
+ * If tx pacing is enabled, this also updates pacer bucket to account for the
+ * amount of bytes that have been sent.
+ *
+ * @param tc           transport connection
+ * @param pkts         packets recently sent
+ * @param bytes                bytes recently sent
+ */
+void transport_connection_update_tx_stats (transport_connection_t * tc,
+                                          u32 bytes);
+
+void
+transport_connection_tx_pacer_update_bytes (transport_connection_t * tc,
+                                           u32 bytes);
+
 #endif /* SRC_VNET_SESSION_TRANSPORT_INTERFACE_H_ */
 
 /*