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//
3// Close a TFO socket with unread data.
4// This will trigger a RST pkt.
5
6`./defaults.sh`
7
8 0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3
9 +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0
10 +0 bind(3, ..., ...) = 0
11 +0 listen(3, 1) = 0
12 +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0
13
14 +0 < S 0:10(10) win 32792 <mss 1460,sackOK,nop,nop,FO TFO_COOKIE,nop,nop>
15 +0 > S. 0:0(0) ack 11 <mss 1460,nop,nop,sackOK>
16
17 +0 accept(3, ..., ...) = 4
18 +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }%
19 +0 %{ assert tcpi_state == TCP_SYN_RECV, tcpi_state }%
20
21// data_was_unread == true in __tcp_close()
22 +0 close(4) = 0
23 +0 > R. 1:1(0) ack 11