tools/testing/selftests/net/packetdrill/tcp_tcp_info_tcp-info-last_data_recv.pkt

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/packetdrill/tcp_tcp_info_tcp-info-last_data_recv.pkt

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/packetdrill/tcp_tcp_info_tcp-info-last_data_recv.pkt
Extension
.pkt
Size
722 bytes
Lines
21
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 tcpi_last_data_recv for active session
`./defaults.sh`

// Create a socket and set it to non-blocking.
+0    socket(..., SOCK_STREAM, IPPROTO_TCP) = 3
+0    fcntl(3, F_GETFL) = 0x2 (flags O_RDWR)
+0    fcntl(3, F_SETFL, O_RDWR|O_NONBLOCK) = 0

+0    connect(3, ..., ...) = -1 EINPROGRESS (Operation now in progress)
+0    > S 0:0(0) <mss 1460,sackOK,TS val 100 ecr 0,nop,wscale 8>
+.030 < S. 0:0(0) ack 1 win 10000 <mss 1000,sackOK,nop,nop,nop,wscale 8>
+0    > . 1:1(0) ack 1

+1 %{ assert 990 <= tcpi_last_data_recv <= 1010, tcpi_last_data_recv }%

+0    < . 1:1001(1000) ack 1 win 300
+0    > . 1:1(0) ack 1001

+0 %{ assert tcpi_last_data_recv <= 10, tcpi_last_data_recv }%

Annotation

Implementation Notes