From 78c896b3b3127515478090c19447e27dc406427e Mon Sep 17 00:00:00 2001
From: Jianfeng Tan <henry.tjf@antfin.com>
Date: Mon, 18 Nov 2019 06:59:50 +0000
Subject: TLDKv2

Signed-off-by: Jianfeng Tan <henry.tjf@antfin.com>
Signed-off-by: Jielong Zhou <jielong.zjl@antfin.com>
Signed-off-by: Jian Zhang <wuzai.zj@antfin.com>
Signed-off-by: Chen Zhao <winters.zc@antfin.com>
Change-Id: I55c39de4c6cd30f991f35631eb507f770230f08e
---
 .../early_retransmit/er-delayed-3pkt-sack.pkt      | 28 ++++++++++++++++++++++
 1 file changed, 28 insertions(+)
 create mode 100644 test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt

(limited to 'test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt')

diff --git a/test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt b/test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt
new file mode 100644
index 0000000..5d05264
--- /dev/null
+++ b/test/packetdrill/tests/linux/early_retransmit/er-delayed-3pkt-sack.pkt
@@ -0,0 +1,28 @@
+// Test delayed ER with 3 packets outstanding, receiver sending SACKs.
+
+// Enable delayed early retransmit.
+`sysctl -q net.ipv4.tcp_early_retrans=2`
+
+0.000 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0.000 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
+0.000 bind(3, ..., ...) = 0
+0.000 listen(3, 1) = 0
+
+0.100 < S 0:0(0) win 32792 <mss 1460,sackOK,nop,nop,nop,wscale 7>
+0.100 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK,nop,wscale 6>
+0.200 < . 1:1(0) ack 1 win 257
+0.200 accept(3, ..., ...) = 4
+
+0.200 write(4, ..., 4380) = 4380
+0.200 > P. 1:4381(4380) ack 1
+0.300 < . 1:1(0) ack 1 win 257 <sack 1461:2921,nop,nop>
+0.300 < . 1:1(0) ack 1 win 257 <sack 1461:4381,nop,nop>
+0.325 > . 1:1461(1460) ack 1  // delayed Early Retransmit at RTT/4 = 25ms
+0.425 < . 1:1(0) ack 4381 win 257
+
+0.500 close(4) = 0
+0.500 > F. 4381:4381(0) ack 1
+0.600 < F. 1:1(0) ack 4382 win 257
+0.601 > . 4382:4382(0) ack 2
+
+0.700 `sysctl -q net.ipv4.tcp_early_retrans=3`
-- 
cgit 1.2.3-korg