Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
selftests: net: add tests for PPP
Add ping and iperf3 tests for ppp_async.c and pppoe.c.
Signed-off-by: Qingfang Deng <qingfang.deng@linux.dev>
Link: https://patch.msgid.link/20260403034908.30017-1-qingfang.deng@linux.dev
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
authored by
Qingfang Deng
and committed by
Paolo Abeni
dfecb0c5
c149d90e
+181
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MAINTAINERS
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MAINTAINERS
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tools/testing/selftests/Makefile
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tools/testing/selftests/Makefile
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tools/testing/selftests/net/ppp/Makefile
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tools/testing/selftests/net/ppp/Makefile
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tools/testing/selftests/net/ppp/config
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tools/testing/selftests/net/ppp/config
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tools/testing/selftests/net/ppp/ppp_async.sh
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tools/testing/selftests/net/ppp/ppp_async.sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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source ppp_common.sh
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# Temporary files for PTY symlinks
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TTY_DIR=$(mktemp -d /tmp/ppp.XXXXXX)
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TTY_SERVER="$TTY_DIR"/server
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TTY_CLIENT="$TTY_DIR"/client
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# shellcheck disable=SC2329
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cleanup() {
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cleanup_all_ns
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[ -n "$SOCAT_PID" ] && kill_process "$SOCAT_PID"
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rm -fr "$TTY_DIR"
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}
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trap cleanup EXIT
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ppp_common_init
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modprobe -q ppp_async
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# Create the virtual serial device
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socat -d PTY,link="$TTY_SERVER",rawer PTY,link="$TTY_CLIENT",rawer &
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SOCAT_PID=$!
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# Wait for symlinks to be created
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slowwait 5 [ -L "$TTY_SERVER" ]
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# Start the PPP Server
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ip netns exec "$NS_SERVER" pppd "$TTY_SERVER" 115200 \
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"$IP_SERVER":"$IP_CLIENT" \
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local noauth nodefaultroute debug
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# Start the PPP Client
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ip netns exec "$NS_CLIENT" pppd "$TTY_CLIENT" 115200 \
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local noauth updetach nodefaultroute debug
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ppp_test_connectivity
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log_test "PPP async"
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exit "$EXIT_STATUS"
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tools/testing/selftests/net/ppp/ppp_common.sh
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tools/testing/selftests/net/ppp/ppp_common.sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# shellcheck disable=SC2153
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source ../lib.sh
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IP_SERVER="192.168.200.1"
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IP_CLIENT="192.168.200.2"
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ppp_common_init() {
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# Package requirements
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require_command socat
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require_command pppd
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require_command iperf3
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# Check for root privileges
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if [ "$(id -u)" -ne 0 ];then
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echo "SKIP: Need root privileges"
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exit "$ksft_skip"
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fi
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# Namespaces
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setup_ns NS_SERVER NS_CLIENT
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}
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ppp_check_addr() {
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dev=$1
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addr=$2
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ns=$3
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ip -netns "$ns" -4 addr show dev "$dev" 2>/dev/null | grep -q "$addr"
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return $?
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}
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ppp_test_connectivity() {
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slowwait 10 ppp_check_addr "ppp0" "$IP_CLIENT" "$NS_CLIENT"
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ip netns exec "$NS_CLIENT" ping -c 3 "$IP_SERVER"
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check_err $?
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ip netns exec "$NS_SERVER" iperf3 -s -1 -D
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wait_local_port_listen "$NS_SERVER" 5201 tcp
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ip netns exec "$NS_CLIENT" iperf3 -c "$IP_SERVER" -Z -t 2
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check_err $?
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}
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tools/testing/selftests/net/ppp/pppoe.sh
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tools/testing/selftests/net/ppp/pppoe.sh
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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source ppp_common.sh
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VETH_SERVER="veth-server"
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VETH_CLIENT="veth-client"
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PPPOE_LOG=$(mktemp /tmp/pppoe.XXXXXX)
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# shellcheck disable=SC2329
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cleanup() {
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cleanup_all_ns
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[ -n "$SOCAT_PID" ] && kill_process "$SOCAT_PID"
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rm -f "$PPPOE_LOG"
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}
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trap cleanup EXIT
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require_command pppoe-server
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ppp_common_init
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modprobe -q pppoe
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# Try to locate pppoe.so plugin
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PPPOE_PLUGIN=$(find /usr/{lib,lib64,lib32}/pppd/ -name pppoe.so -type f -print -quit)
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if [ -z "$PPPOE_PLUGIN" ]; then
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log_test_skip "PPPoE: pppoe.so plugin not found"
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exit "$EXIT_STATUS"
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fi
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# Create the veth pair
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ip link add "$VETH_SERVER" type veth peer name "$VETH_CLIENT"
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ip link set "$VETH_SERVER" netns "$NS_SERVER"
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ip link set "$VETH_CLIENT" netns "$NS_CLIENT"
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ip -netns "$NS_SERVER" link set "$VETH_SERVER" up
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ip -netns "$NS_CLIENT" link set "$VETH_CLIENT" up
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# Start socat as syslog listener
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socat -v -u UNIX-RECV:/dev/log OPEN:/dev/null > "$PPPOE_LOG" 2>&1 &
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SOCAT_PID=$!
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# Start the PPP Server. Note that versions before 4.0 ignore -g option and
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# instead use a hardcoded plugin path, so they may fail to find the plugin.
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ip netns exec "$NS_SERVER" pppoe-server -I "$VETH_SERVER" \
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-L "$IP_SERVER" -R "$IP_CLIENT" -N 1 -q "$(command -v pppd)" \
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-k -O "$(pwd)/pppoe-server-options" -g "$PPPOE_PLUGIN"
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# Start the PPP Client
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ip netns exec "$NS_CLIENT" pppd \
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local debug updetach noipdefault noauth nodefaultroute \
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plugin "$PPPOE_PLUGIN" nic-"$VETH_CLIENT"
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ppp_test_connectivity
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log_test "PPPoE"
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# Dump syslog messages if the test failed
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if [ "$RET" -ne 0 ]; then
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while read -r _sign _date _time len _from _to
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do len=${len##*=}
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read -n "$len" -r LINE
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echo "$LINE"
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done < "$PPPOE_LOG"
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fi
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exit "$EXIT_STATUS"