tools/testing/selftests/net/packetdrill/tcp_close_close-on-syn-sent.pkt

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/packetdrill/tcp_close_close-on-syn-sent.pkt

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/packetdrill/tcp_close_close-on-syn-sent.pkt
Extension
.pkt
Size
709 bytes
Lines
22
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
// Test to make sure no RST is being sent when close()
// is called on a socket with SYN_SENT state.

`./defaults.sh`

    0 socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
   +0 fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0

   +0 connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress)
   +0 > S 0:0(0) <...>

// Application decideds to close the socket in SYN_SENT state
// Make sure no RST is sent after close().
   +0 close(3) = 0

// Receive syn-ack to trigger the send side packet examination:
// If a RESET were sent right after close(), it would have failed with
// a mismatched timestamp.
  +.1 < S. 0:0(0) ack 1 win 32000 <mss 1460,nop,wscale 7>
   +0 > R 1:1(0)

Annotation

Implementation Notes