tcp: add lost and in flight to byte tracker

Type: improvement

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I3b0041d72d835cbb11e803cc56ac4c68a68238a0

1 files changed, 7 insertions, 1 deletions

diff --git a/src/vnet/tcp/tcp.h b/src/vnet/tcp/tcp.h
index 99880696937..361abe25729 100644
--- a/src/vnet/tcp/tcp.h
+++ b/src/vnet/tcp/tcp.h
@@ -263,6 +263,8 @@ typedef struct tcp_bt_sample_
   f64 delivered_time;		/**< Delivered time when sample taken */
   f64 tx_time;			/**< Transmit time for the burst */
   f64 first_tx_time;		/**< Connection first tx time at tx */
+  u64 tx_in_flight;		/**< In flight at tx time */
+  u64 tx_lost;			/**< Lost at tx time */
   tcp_bts_flags_t flags;	/**< Sample flag */
 } tcp_bt_sample_t;
 
@@ -273,9 +275,12 @@ typedef struct tcp_rate_sample_
   f64 prior_time;		/**< Delivered time of sample used for rate */
   f64 interval_time;		/**< Time to ack the bytes delivered */
   f64 rtt_time;			/**< RTT for sample */
+  u64 tx_in_flight;		/**< In flight at (re)transmit time */
+  u64 tx_lost;			/**< Lost over interval */
   u32 delivered;		/**< Bytes delivered in interval_time */
   u32 acked_and_sacked;		/**< Bytes acked + sacked now */
-  u32 lost;			/**< Bytes lost now */
+  u32 last_lost;		/**< Bytes lost now */
+  u32 lost;			/**< Number of bytes lost over interval */
   tcp_bts_flags_t flags;	/**< Rate sample flags from bt sample */
 } tcp_rate_sample_t;
 
@@ -420,6 +425,7 @@ typedef struct _tcp_connection
   u64 app_limited;		/**< Delivered when app-limited detected */
   f64 delivered_time;		/**< Time last bytes were acked */
   f64 first_tx_time;		/**< Send time for recently delivered/sent */
+  u64 lost;			/**< Total bytes lost */
   tcp_byte_tracker_t *bt;	/**< Tx byte tracker */
 
   tcp_errors_t errors;	/**< Soft connection errors */