From fea0713f6619d3311493391421a41a8ace7c9333 Mon Sep 17 00:00:00 2001
From: Florin Coras <fcoras@cisco.com>
Date: Mon, 7 Oct 2019 17:19:09 -0700
Subject: [PATCH] tcp: rate sample for persist segments

Type: fix

Change-Id: I7c38d2ad6364f098529f51c15b533eb234b82716
Signed-off-by: Florin Coras <fcoras@cisco.com>
(cherry picked from commit dd60b1b128d8d6c07dc8b8bcbf932b808cedbaab)
---
 src/vnet/tcp/tcp_output.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/vnet/tcp/tcp_output.c b/src/vnet/tcp/tcp_output.c
index fb18006b4d5..081a6bf521a 100644
--- a/src/vnet/tcp/tcp_output.c
+++ b/src/vnet/tcp/tcp_output.c
@@ -1786,6 +1786,12 @@ tcp_timer_persist_handler (u32 index)
 			   || tc->snd_nxt == tc->snd_una_max
 			   || tc->rto_boff > 1));
 
+  if (tc->flags & TCP_CONN_RATE_SAMPLE)
+    {
+      tcp_bt_check_app_limited (tc);
+      tcp_bt_track_tx (tc);
+    }
+
   tcp_push_hdr_i (tc, b, tc->snd_nxt, /* compute opts */ 0,
 		  /* burst */ 0, /* update_snd_nxt */ 1);
   tc->snd_una_max = seq_max (tc->snd_nxt, tc->snd_una_max);