tools/testing/selftests/net/ppp/pppol2tp.sh

Source file repositories/reference/linux-study-clean/tools/testing/selftests/net/ppp/pppol2tp.sh

File Facts

System
Linux kernel
Corpus path
tools/testing/selftests/net/ppp/pppol2tp.sh
Extension
.sh
Size
2879 bytes
Lines
111
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

source ppp_common.sh

VETH_SERVER="veth-server"
VETH_CLIENT="veth-client"
OUTER_IP_SERVER="172.16.1.1"
OUTER_IP_CLIENT="172.16.1.2"

PPPOL2TP_DIR=$(mktemp -d /tmp/pppol2tp.XXXXXX)
PPPOL2TP_LOG="$PPPOL2TP_DIR/l2tp.log"

# shellcheck disable=SC2329
cleanup() {
	cleanup_all_ns
	[ -n "$SOCAT_PID" ] && kill_process "$SOCAT_PID"
	rm -rf "$PPPOL2TP_DIR"
}

trap cleanup EXIT

require_command xl2tpd
ppp_common_init
modprobe -q l2tp_ppp

# Create the veth pair
ip link add "$VETH_SERVER" type veth peer name "$VETH_CLIENT"
ip link set "$VETH_SERVER" netns "$NS_SERVER"
ip link set "$VETH_CLIENT" netns "$NS_CLIENT"
ip -netns "$NS_SERVER" link set "$VETH_SERVER" up
ip -netns "$NS_CLIENT" link set "$VETH_CLIENT" up
ip -netns "$NS_SERVER" address add dev "$VETH_SERVER" "$OUTER_IP_SERVER" peer "$OUTER_IP_CLIENT"
ip -netns "$NS_CLIENT" address add dev "$VETH_CLIENT" "$OUTER_IP_CLIENT" peer "$OUTER_IP_SERVER"

# Start socat as syslog listener
socat -v -u UNIX-RECV:/dev/log OPEN:/dev/null > "$PPPOL2TP_LOG" 2>&1 &
SOCAT_PID=$!

# Generate configuration files
cat > "$PPPOL2TP_DIR/l2tp-server.conf" <<EOF
[global]
listen-addr = $OUTER_IP_SERVER
access control = no

[lns default]
ip range = $IP_CLIENT
local ip = $IP_SERVER
require authentication = no
require chap = no
require pap = no
ppp debug = yes
pppoptfile = $(pwd)/pppoe-server-options
EOF

cat > "$PPPOL2TP_DIR/l2tp-client.conf" <<EOF
[global]
listen-addr = $OUTER_IP_CLIENT
access control = no

[lac server]
lns = $OUTER_IP_SERVER
require authentication = no
require chap = no
require pap = no
ppp debug = yes
pppoptfile = $(pwd)/pppoe-server-options
EOF

# Start the L2TP Server

Annotation

Implementation Notes