tools/testing/selftests/net/reuseaddr_ports_exhausted.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/reuseaddr_ports_exhausted.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/reuseaddr_ports_exhausted.sh
Extension
.sh
Size
635 bytes
Lines
36
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

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Run tests when all ephemeral ports are exhausted.
#
# Author: Kuniyuki Iwashima <kuniyu@amazon.co.jp>

set +x
set -e

readonly NETNS="ns-$(mktemp -u XXXXXX)"

setup() {
	ip netns add "${NETNS}"
	ip -netns "${NETNS}" link set lo up
	ip netns exec "${NETNS}" \
		sysctl -w net.ipv4.ip_local_port_range="32768 32768" \
		> /dev/null 2>&1
	ip netns exec "${NETNS}" \
		sysctl -w net.ipv4.ip_autobind_reuse=1 > /dev/null 2>&1
}

cleanup() {
	ip netns del "${NETNS}"
}

trap cleanup EXIT
setup

do_test() {
	ip netns exec "${NETNS}" ./reuseaddr_ports_exhausted
}

do_test
echo "tests done"

Annotation

Implementation Notes