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-rw-r--r--tools/testing/selftests/net/ppp/Makefile16
-rw-r--r--tools/testing/selftests/net/ppp/config11
-rwxr-xr-xtools/testing/selftests/net/ppp/ppp_async.sh43
-rw-r--r--tools/testing/selftests/net/ppp/ppp_common.sh45
-rw-r--r--tools/testing/selftests/net/ppp/pppoe-server-options3
-rwxr-xr-xtools/testing/selftests/net/ppp/pppoe.sh65
-rwxr-xr-xtools/testing/selftests/net/ppp/pppol2tp.sh110
7 files changed, 293 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/ppp/Makefile b/tools/testing/selftests/net/ppp/Makefile
new file mode 100644
index 000000000000..6036fa134351
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/Makefile
@@ -0,0 +1,16 @@
+# SPDX-License-Identifier: GPL-2.0
+
+top_srcdir = ../../../../..
+
+TEST_PROGS := \
+ ppp_async.sh \
+ pppoe.sh \
+ pppol2tp.sh \
+# end of TEST_PROGS
+
+TEST_FILES := \
+ ppp_common.sh \
+ pppoe-server-options \
+# end of TEST_FILES
+
+include ../../lib.mk
diff --git a/tools/testing/selftests/net/ppp/config b/tools/testing/selftests/net/ppp/config
new file mode 100644
index 000000000000..843545df8f03
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/config
@@ -0,0 +1,11 @@
+CONFIG_IPV6=y
+CONFIG_L2TP=m
+CONFIG_PACKET=y
+CONFIG_PPP=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPPOE=m
+CONFIG_PPPOE_HASH_BITS_4=y
+CONFIG_PPPOL2TP=m
+CONFIG_VETH=y
diff --git a/tools/testing/selftests/net/ppp/ppp_async.sh b/tools/testing/selftests/net/ppp/ppp_async.sh
new file mode 100755
index 000000000000..10f54c8dd0bc
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/ppp_async.sh
@@ -0,0 +1,43 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+source ppp_common.sh
+
+# Temporary files for PTY symlinks
+TTY_DIR=$(mktemp -d /tmp/ppp.XXXXXX)
+TTY_SERVER="$TTY_DIR"/server
+TTY_CLIENT="$TTY_DIR"/client
+
+# shellcheck disable=SC2329
+cleanup() {
+ cleanup_all_ns
+ [ -n "$SOCAT_PID" ] && kill_process "$SOCAT_PID"
+ rm -fr "$TTY_DIR"
+}
+
+trap cleanup EXIT
+
+ppp_common_init
+modprobe -q ppp_async
+
+# Create the virtual serial device
+socat -d PTY,link="$TTY_SERVER",rawer PTY,link="$TTY_CLIENT",rawer &
+SOCAT_PID=$!
+
+# Wait for symlinks to be created
+slowwait 5 [ -L "$TTY_SERVER" ]
+
+# Start the PPP Server
+ip netns exec "$NS_SERVER" pppd "$TTY_SERVER" 115200 \
+ "$IP_SERVER":"$IP_CLIENT" \
+ local noauth nodefaultroute debug
+
+# Start the PPP Client
+ip netns exec "$NS_CLIENT" pppd "$TTY_CLIENT" 115200 \
+ local noauth updetach nodefaultroute debug
+
+ppp_test_connectivity
+
+log_test "PPP async"
+
+exit "$EXIT_STATUS"
diff --git a/tools/testing/selftests/net/ppp/ppp_common.sh b/tools/testing/selftests/net/ppp/ppp_common.sh
new file mode 100644
index 000000000000..40bbec317039
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/ppp_common.sh
@@ -0,0 +1,45 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# shellcheck disable=SC2153
+
+source ../lib.sh
+
+IP_SERVER="192.168.200.1"
+IP_CLIENT="192.168.200.2"
+
+ppp_common_init() {
+ # Package requirements
+ require_command socat
+ require_command pppd
+ require_command iperf3
+
+ # Check for root privileges
+ if [ "$(id -u)" -ne 0 ];then
+ echo "SKIP: Need root privileges"
+ exit "$ksft_skip"
+ fi
+
+ # Namespaces
+ setup_ns NS_SERVER NS_CLIENT
+}
+
+ppp_check_addr() {
+ dev=$1
+ addr=$2
+ ns=$3
+ ip -netns "$ns" -4 addr show dev "$dev" 2>/dev/null | grep -q "$addr"
+ return $?
+}
+
+ppp_test_connectivity() {
+ slowwait 10 ppp_check_addr "ppp0" "$IP_CLIENT" "$NS_CLIENT"
+
+ ip netns exec "$NS_CLIENT" ping -c 3 "$IP_SERVER"
+ check_err $?
+
+ ip netns exec "$NS_SERVER" iperf3 -s -1 -D
+ wait_local_port_listen "$NS_SERVER" 5201 tcp
+
+ ip netns exec "$NS_CLIENT" iperf3 -c "$IP_SERVER" -Z -t 2
+ check_err $?
+}
diff --git a/tools/testing/selftests/net/ppp/pppoe-server-options b/tools/testing/selftests/net/ppp/pppoe-server-options
new file mode 100644
index 000000000000..cd586be7061b
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/pppoe-server-options
@@ -0,0 +1,3 @@
+noauth
+noipdefault
+nomagic
diff --git a/tools/testing/selftests/net/ppp/pppoe.sh b/tools/testing/selftests/net/ppp/pppoe.sh
new file mode 100755
index 000000000000..f67b51df7490
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/pppoe.sh
@@ -0,0 +1,65 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+
+source ppp_common.sh
+
+VETH_SERVER="veth-server"
+VETH_CLIENT="veth-client"
+PPPOE_LOG=$(mktemp /tmp/pppoe.XXXXXX)
+
+# shellcheck disable=SC2329
+cleanup() {
+ cleanup_all_ns
+ [ -n "$SOCAT_PID" ] && kill_process "$SOCAT_PID"
+ rm -f "$PPPOE_LOG"
+}
+
+trap cleanup EXIT
+
+require_command pppoe-server
+ppp_common_init
+modprobe -q pppoe
+
+# Try to locate pppoe.so plugin
+PPPOE_PLUGIN=$(find /usr/{lib,lib64,lib32}/pppd/ -name pppoe.so -type f -print -quit)
+if [ -z "$PPPOE_PLUGIN" ]; then
+ log_test_skip "PPPoE: pppoe.so plugin not found"
+ exit "$EXIT_STATUS"
+fi
+
+# 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
+
+# Start socat as syslog listener
+socat -v -u UNIX-RECV:/dev/log OPEN:/dev/null > "$PPPOE_LOG" 2>&1 &
+SOCAT_PID=$!
+
+# Start the PPP Server. Note that versions before 4.0 ignore -g option and
+# instead use a hardcoded plugin path, so they may fail to find the plugin.
+ip netns exec "$NS_SERVER" pppoe-server -I "$VETH_SERVER" \
+ -L "$IP_SERVER" -R "$IP_CLIENT" -N 1 -q "$(command -v pppd)" \
+ -k -O "$(pwd)/pppoe-server-options" -g "$PPPOE_PLUGIN"
+
+# Start the PPP Client
+ip netns exec "$NS_CLIENT" pppd \
+ local debug updetach noipdefault noauth nodefaultroute \
+ plugin "$PPPOE_PLUGIN" nic-"$VETH_CLIENT"
+
+ppp_test_connectivity
+
+log_test "PPPoE"
+
+# Dump syslog messages if the test failed
+if [ "$RET" -ne 0 ]; then
+ while read -r _sign _date _time len _from _to
+ do len=${len##*=}
+ read -n "$len" -r LINE
+ echo "$LINE"
+ done < "$PPPOE_LOG"
+fi
+
+exit "$EXIT_STATUS"
diff --git a/tools/testing/selftests/net/ppp/pppol2tp.sh b/tools/testing/selftests/net/ppp/pppol2tp.sh
new file mode 100755
index 000000000000..37c4d56c5c6e
--- /dev/null
+++ b/tools/testing/selftests/net/ppp/pppol2tp.sh
@@ -0,0 +1,110 @@
+#!/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 = $(pwd)/pppoe-server-options
+EOF
+
+# Start the L2TP Server
+ip netns exec "$NS_SERVER" xl2tpd -D -c "$PPPOL2TP_DIR/l2tp-server.conf" \
+ -p "$PPPOL2TP_DIR/l2tp-server.pid" -C "$PPPOL2TP_DIR/l2tp-server.control" &
+
+# Start the L2TP Client
+ip netns exec "$NS_CLIENT" xl2tpd -D -c "$PPPOL2TP_DIR/l2tp-client.conf" \
+ -p "$PPPOL2TP_DIR/l2tp-client.pid" -C "$PPPOL2TP_DIR/l2tp-client.control" &
+
+# Wait for xl2tpd to start and open their control pipes
+slowwait 2 [ -p "$PPPOL2TP_DIR/l2tp-server.control" ]
+slowwait 2 [ -p "$PPPOL2TP_DIR/l2tp-client.control" ]
+
+# Connect LAC to LNS
+echo "c server" > "$PPPOL2TP_DIR/l2tp-client.control"
+
+ppp_test_connectivity
+
+log_test "PPPoL2TP"
+
+# Recursion test
+RET=0
+# Delete route to LNS IP
+ip -netns "$NS_CLIENT" route del "$OUTER_IP_SERVER"
+# Add default route through ppp0
+ip -netns "$NS_CLIENT" route add default dev ppp0
+# ping (we expect the ping to fail but not deadlock the system)
+ip netns exec "$NS_CLIENT" ping -c 1 "$IP_SERVER" -w 1
+check_fail $?
+
+log_test "PPPoL2TP Recursion"
+
+# Dump syslog messages if the test failed
+if [ "$EXIT_STATUS" -ne 0 ]; then
+ while read -r _sign _date _time len _from _to
+ do len=${len##*=}
+ read -n "$len" -r LINE
+ echo "$LINE"
+ done < "$PPPOL2TP_LOG"
+fi
+
+exit "$EXIT_STATUS"
generated by cgit v1.2.3 (git 2.0.4) at 2026-09-28 00:23:51 +0000