Commit 5ed080f8 authored by Kuniyuki Iwashima's avatar Kuniyuki Iwashima Committed by Jakub Kicinski
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selftest: packetdrill: Import opt34/fin-close-socket.pkt. 



This imports the non-experimental version of fin-close-socket.pkt.

This file tests the scenario where a TFO child socket's state
transitions from SYN_RECV to CLOSE_WAIT before accept()ed.

Signed-off-by: default avatarKuniyuki Iwashima <kuniyu@google.com>
Reviewed-by: default avatarWillem de Bruijn <willemb@google.com>
Link: https://patch.msgid.link/20250927213022.1850048-8-kuniyu@google.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent e57b3933

tools/testing/selftests/net/packetdrill/tcp_fastopen_server_fin-close-socket.pkt

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// SPDX-License-Identifier: GPL-2.0

//

// Send a FIN pkt with the ACK bit to a TFO socket.

// The socket will go to TCP_CLOSE_WAIT state and data can be

// read until the socket is closed, at which time a FIN will be sent.



`./defaults.sh`



    0 socket(..., SOCK_STREAM|SOCK_NONBLOCK, IPPROTO_TCP) = 3

   +0 setsockopt(3, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0

   +0 bind(3, ..., ...) = 0

   +0 listen(3, 1) = 0

   +0 setsockopt(3, SOL_TCP, TCP_FASTOPEN, [1], 4) = 0



   +0 < S 0:10(10) win 32792 <mss 1460,sackOK,nop,nop,FO TFO_COOKIE,nop,nop>

   +0 > S. 0:0(0) ack 11 <mss 1460,nop,nop,sackOK>



// FIN is acked and the socket goes to TCP_CLOSE_WAIT state

// in tcp_fin() called from tcp_data_queue().

   +0 < F. 11:11(0) ack 1 win 32792

   +0 > . 1:1(0) ack 12



   +0 accept(3, ..., ...) = 4

   +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) != 0, tcpi_options }%

   +0 %{ assert tcpi_state == TCP_CLOSE_WAIT, tcpi_state }%



   +0 read(4, ..., 512) = 10

   +0 close(4) = 0

   +0 > F. 1:1(0) ack 12

    * > F. 1:1(0) ack 12