tcp: timestamp adjustment

[vpp.git] / src / vnet / tcp / tcp.h

diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 2bc6f22..a13a30d 100644 (file)
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -288,6 +288,11 @@ typedef enum _tcp_cc_ack_t
   TCP_CC_PARTIALACK
 } tcp_cc_ack_t;
 
+typedef enum tcp_cc_event_
+{
+  TCP_CC_EVT_START_TX,
+} tcp_cc_event_t;
+
 typedef struct _tcp_connection
 {
   CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
@@ -372,6 +377,7 @@ typedef struct _tcp_connection
 
   u32 last_fib_check;  /**< Last time we checked fib route for peer */
   u16 mss;             /**< Our max seg size that includes options */
+  u32 timestamp_delta;
 } tcp_connection_t;
 
 /* *INDENT-OFF* */
@@ -387,6 +393,8 @@ struct _tcp_cc_algorithm
   void (*congestion) (tcp_connection_t * tc);
   void (*loss) (tcp_connection_t * tc);
   void (*recovered) (tcp_connection_t * tc);
+  void (*undo_recovery) (tcp_connection_t * tc);
+  void (*event) (tcp_connection_t *tc, tcp_cc_event_t evt);
 };
 /* *INDENT-ON* */
 
@@ -921,6 +929,16 @@ tcp_time_now_w_thread (u32 thread_index)
   return tcp_main.wrk_ctx[thread_index].time_now;
 }
 
+/**
+ * Generate timestamp for tcp connection
+ */
+always_inline u32
+tcp_tstamp (tcp_connection_t * tc)
+{
+  return (tcp_main.wrk_ctx[tc->c_thread_index].time_now -
+         tc->timestamp_delta);
+}
+
 always_inline f64
 tcp_time_now_us (u32 thread_index)
 {
@@ -965,6 +983,26 @@ tcp_cc_loss (tcp_connection_t * tc)
   tc->cc_algo->loss (tc);
 }
 
+static inline void
+tcp_cc_recovered (tcp_connection_t * tc)
+{
+  tc->cc_algo->recovered (tc);
+}
+
+static inline void
+tcp_cc_undo_recovery (tcp_connection_t * tc)
+{
+  if (tc->cc_algo->undo_recovery)
+    tc->cc_algo->undo_recovery (tc);
+}
+
+static inline void
+tcp_cc_event (tcp_connection_t * tc, tcp_cc_event_t evt)
+{
+  if (tc->cc_algo->event)
+    tc->cc_algo->event (tc, evt);
+}
+
 always_inline void
 tcp_timer_set (tcp_connection_t * tc, u8 timer_id, u32 interval)
 {