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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-ppp@vger.kernel.org, netdev@vger.kernel.org Cc: Paul Mackerras Subject: [PATCH net-next v2] selftests: net: add tests for PPP Date: Sat, 21 Mar 2026 23:46:15 +0800 Message-ID: <20260321154616.2754-1-dqfext@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add ping and iperf3 tests for ppp_async.c and pppoe.c. Signed-off-by: Qingfang Deng --- v2: fix shellcheck and add trailing backslashes. - https://lore.kernel.org/netdev/20260320071755.483733-1-dqfext@gmail.com/ MAINTAINERS | 1 + tools/testing/selftests/Makefile | 1 + tools/testing/selftests/net/ppp/Makefile | 15 +++++++ tools/testing/selftests/net/ppp/config | 8 ++++ tools/testing/selftests/net/ppp/ppp_async.sh | 37 ++++++++++++++++ tools/testing/selftests/net/ppp/ppp_common.sh | 42 +++++++++++++++++++ .../selftests/net/ppp/pppoe-server-options | 2 + tools/testing/selftests/net/ppp/pppoe.sh | 36 ++++++++++++++++ 8 files changed, 142 insertions(+) create mode 100644 tools/testing/selftests/net/ppp/Makefile create mode 100644 tools/testing/selftests/net/ppp/config create mode 100755 tools/testing/selftests/net/ppp/ppp_async.sh create mode 100644 tools/testing/selftests/net/ppp/ppp_common.sh create mode 100644 tools/testing/selftests/net/ppp/pppoe-server-options create mode 100755 tools/testing/selftests/net/ppp/pppoe.sh diff --git a/MAINTAINERS b/MAINTAINERS index a09bf30a057d..d553437d5ac1 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -21078,6 +21078,7 @@ PPP PROTOCOL DRIVERS AND COMPRESSORS L: linux-ppp@vger.kernel.org S: Orphan F: drivers/net/ppp/ppp_* +F: tools/testing/selftests/net/ppp/ =20 PPS SUPPORT M: Rodolfo Giometti diff --git a/tools/testing/selftests/Makefile b/tools/testing/selftests/Mak= efile index 450f13ba4cca..65f84e8a0cf0 100644 --- a/tools/testing/selftests/Makefile +++ b/tools/testing/selftests/Makefile @@ -78,6 +78,7 @@ TARGETS +=3D net/netfilter TARGETS +=3D net/openvswitch TARGETS +=3D net/ovpn TARGETS +=3D net/packetdrill +TARGETS +=3D net/ppp TARGETS +=3D net/rds TARGETS +=3D net/tcp_ao TARGETS +=3D nolibc diff --git a/tools/testing/selftests/net/ppp/Makefile b/tools/testing/selft= ests/net/ppp/Makefile new file mode 100644 index 000000000000..b39b0abadde6 --- /dev/null +++ b/tools/testing/selftests/net/ppp/Makefile @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 + +top_srcdir =3D ../../../../.. + +TEST_PROGS :=3D \ + ppp_async.sh \ + pppoe.sh \ +# end of TEST_PROGS + +TEST_FILES :=3D \ + 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/selftes= ts/net/ppp/config new file mode 100644 index 000000000000..7053aa9d8d74 --- /dev/null +++ b/tools/testing/selftests/net/ppp/config @@ -0,0 +1,8 @@ +CONFIG_PACKET=3Dy +CONFIG_PPP=3Dm +CONFIG_PPP_ASYNC=3Dm +CONFIG_PPP_BSDCOMP=3Dm +CONFIG_PPP_DEFLATE=3Dm +CONFIG_PPPOE=3Dm +CONFIG_PPPOE_HASH_BITS_4=3Dy +CONFIG_TTY=3Dy diff --git a/tools/testing/selftests/net/ppp/ppp_async.sh b/tools/testing/s= elftests/net/ppp/ppp_async.sh new file mode 100755 index 000000000000..5c0eb84945e8 --- /dev/null +++ b/tools/testing/selftests/net/ppp/ppp_async.sh @@ -0,0 +1,37 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +set -e +source ppp_common.sh + +# Temporary files for PTY symlinks +TTY_SERVER=3D$(mktemp -u /tmp/ppp_async_server.XXXXXX) +TTY_CLIENT=3D$(mktemp -u /tmp/ppp_async_client.XXXXXX) + +cleanup() { + cleanup_all_ns + [ -n "$SOCAT_PID" ] && kill "$SOCAT_PID" 2>/dev/null || true +} + +trap cleanup EXIT + +require_command socat +ppp_common_init + +# Create the virtual serial device +socat -d PTY,link=3D"$TTY_SERVER",rawer PTY,link=3D"$TTY_CLIENT",rawer & +SOCAT_PID=3D$! + +# Wait for symlinks to be created +slowwait 5 [ -L "$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 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..9ddfba0f9a05 --- /dev/null +++ b/tools/testing/selftests/net/ppp/ppp_common.sh @@ -0,0 +1,42 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# shellcheck disable=3DSC2153 + +source ../lib.sh + +IP_SERVER=3D"192.168.200.1" +IP_CLIENT=3D"192.168.200.2" + +ppp_common_init() { + # Package requirements + 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=3D$1 + addr=3D$2 + ns=3D$3 + ip -netns "$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 "$IP_SERVER" + + ip netns exec "$NS_SERVER" iperf3 -s -1 -D + wait_local_port_listen "$NS_SERVER" 5201 tcp + + ip netns exec "$NS_CLIENT" iperf3 -c "$IP_SERVER" -Z -t 2 +} diff --git a/tools/testing/selftests/net/ppp/pppoe-server-options b/tools/t= esting/selftests/net/ppp/pppoe-server-options new file mode 100644 index 000000000000..66c8c9d319e9 --- /dev/null +++ b/tools/testing/selftests/net/ppp/pppoe-server-options @@ -0,0 +1,2 @@ +noauth +noipdefault diff --git a/tools/testing/selftests/net/ppp/pppoe.sh b/tools/testing/selft= ests/net/ppp/pppoe.sh new file mode 100755 index 000000000000..0ebedfe3eabe --- /dev/null +++ b/tools/testing/selftests/net/ppp/pppoe.sh @@ -0,0 +1,36 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +set -e +source ppp_common.sh + +VETH_SERVER=3D"veth-server" +VETH_CLIENT=3D"veth-client" + +cleanup() { + cleanup_all_ns +} + +trap cleanup EXIT + +require_command pppoe-server +ppp_common_init + +# Create the veth pair +ip link add "$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 "$VETH_CLIENT" up + +# Start the PPP Server +ip netns exec "$NS_SERVER" pppoe-server -I "$VETH_SERVER" \ + -L "$IP_SERVER" -R "$IP_CLIENT" -N 1 -q "$(command -v pppd)" \ + -k -O "$(pwd)/pppoe-server-options" + +# Start the PPP Client +ip netns exec "$NS_CLIENT" pppd \ + local debug updetach noipdefault noauth nodefaultroute \ + plugin pppoe.so nic-"$VETH_CLIENT" + +ppp_test_connectivity --=20 2.43.0