From: Florin Coras <fcoras@cisco.com>
Date: Thu, 22 Oct 2020 06:24:53 +0000 (-0700)
Subject: tcp: no send space in timer recovery
X-Git-Tag: v21.06-rc0~289
X-Git-Url: https://gerrit.fd.io/r/gitweb?a=commitdiff_plain;h=7d8100fd951af29c245b72847fd2f7e8a5c74acd;p=vpp.git

tcp: no send space in timer recovery

Type: fix

Signed-off-by: Florin Coras <fcoras@cisco.com>
Change-Id: I9461b6539c504ca844c25d04abe95929f842e4e9
---

diff --git a/src/vnet/tcp/tcp.c b/src/vnet/tcp/tcp.c
index 31ba276c9ee..d94da2cf390 100644
--- a/src/vnet/tcp/tcp.c
+++ b/src/vnet/tcp/tcp.c
@@ -916,7 +916,10 @@ tcp_snd_space_inline (tcp_connection_t * tc)
 {
   int snd_space;
 
-  if (PREDICT_FALSE (tcp_in_fastrecovery (tc)
+  /* Fast path is disabled when recovery is on. @ref tcp_session_custom_tx
+   * controls both retransmits and the sending of new data while congested
+   */
+  if (PREDICT_FALSE (tcp_in_cong_recovery (tc)
 		     || tc->state == TCP_STATE_CLOSED))
     return 0;