tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2// Test that we send FIN packet with correct TSval
3--tcp_ts_tick_usecs=1000
4--tolerance_usecs=7000
5
6`./defaults.sh`
7
8// Create a socket.
9 0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
10 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
11
12 +0 bind(3, ..., ...) = 0
13 +0 listen(3, 1) = 0
14
15// Establish a connection.
16 +0 < S 0:0(0) win 20000 <mss 1000,sackOK,TS val 100 ecr 0>
17 +0 > S. 0:0(0) ack 1 <mss 1460,sackOK,TS val 100 ecr 100>
18 +.1 < . 1:1(0) ack 1 win 20000 <nop,nop,TS val 200 ecr 100>
19 +0 accept(3, ..., ...) = 4
20
21 +1 close(4) = 0
22// Check that FIN TSval is updated properly, one second has passed since last sent packet.
23 +0 > F. 1:1(0) ack 1 <nop,nop,TS val 1200 ecr 200>