tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/packetdrill/tcp_fastopen_server_basic-non-tfo-listener.pkt
Extension
.pkt
Size
769 bytes
Lines
27
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: tools
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0
//
// Basic TFO server test
//
// Server w/o TCP_FASTOPEN socket option

`./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 < S 0:10(10) win 32792 <mss 1460,sackOK,FO TFO_COOKIE>

// Data is ignored since TCP_FASTOPEN is not set on the listener
   +0 > S. 0:0(0) ack 1 <mss 1460,nop,nop,sackOK>

   +0 accept(3, ..., ...) = -1 EAGAIN (Resource temporarily unavailable)

// The above should block until ack comes in below.
   +0 < . 1:31(30) ack 1 win 5840
   +0 accept(3, ..., ...) = 4

   +0 %{ assert (tcpi_options & TCPI_OPT_SYN_DATA) == 0, tcpi_options }%
   +0 read(4, ..., 512) = 30

Annotation

Implementation Notes