From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-181.mta0.migadu.com (out-181.mta0.migadu.com [91.218.175.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CA4917262B for ; Fri, 8 May 2026 03:22:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.218.175.181 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778210552; cv=none; b=EiwwSs19XujmEc/P3jKtkQXLkhlYWlUo55vmXOEA4Z0WEm9MECW9v9Wu/Y6/HLP1m8PzMylXJNNm3CyT3oSh38lK3feQ2GW5Nj+//xeoA2mOb0Oo4TMfHZQl4FOh/8nsdfFlPM6ld4kf5YjlpDdTK9EDDzvdXmnkk2GkM3RwWCQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778210552; c=relaxed/simple; bh=cN2NZsPCZ+NPj8HeApyRS2bD0oPy84AtT4tkry2rUeQ=; h=From:To:Subject:Date:Message-ID:MIME-Version; b=dTc4VT85g+Y+ZcNCoBz8JnS4BEu6r9OYb48oIxPnGNJ8l5232CnEVpermNyaHtBcaa+Lk4HDDIWQ1s2AQVfYCV2pmiKXEl+Q0z8W2iIMbN9ptX6S1wGpAFgD4qdsfxQK36W6BpSJV+90Hw385P7d8ONIR4G4J6MrQ0j7GzsWB04= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=t5zg37wR; arc=none smtp.client-ip=91.218.175.181 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="t5zg37wR" X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1778210537; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding; bh=wqUUL+VHHoIu9SyW+orjOwBUwI3UsHllP1V3Z2CU+IA=; b=t5zg37wRIuKTrW/5lg0BSEqNo8L3v4xPjbhoV6bHvRNz13QWylSn8qauXE6+zKHcJSQANp jp9luISk18+wxOZRamsdJL0qIOxN4APvOlWAhn1g7RSxImujb3UBWwwUkTiEh17p2EdHFo VZuhgjVWaiaFj1sMAxKLx/fSdmwjk+I= From: Qingfang Deng To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Shuah Khan , Felix Maurer , Qingfang Deng , Sebastian Andrzej Siewior , Petr Machata , linux-kernel@vger.kernel.org, linux-ppp@vger.kernel.org, netdev@vger.kernel.org, linux-kselftest@vger.kernel.org Subject: [PATCH net-next] selftests: net: add tests for PPPoL2TP Date: Fri, 8 May 2026 11:21:49 +0800 Message-ID: <20260508032158.67887-1-qingfang.deng@linux.dev> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Add ping, iperf3, and recursion tests for PPPoL2TP. Assisted-by: Gemini:gemini-3-flash Signed-off-by: Qingfang Deng --- tools/testing/selftests/net/ppp/Makefile | 1 + tools/testing/selftests/net/ppp/config | 3 + tools/testing/selftests/net/ppp/pppol2tp.sh | 93 +++++++++++++++++++++ 3 files changed, 97 insertions(+) create mode 100755 tools/testing/selftests/net/ppp/pppol2tp.sh diff --git a/tools/testing/selftests/net/ppp/Makefile b/tools/testing/selftests/net/ppp/Makefile index b39b0abadde6..6036fa134351 100644 --- a/tools/testing/selftests/net/ppp/Makefile +++ b/tools/testing/selftests/net/ppp/Makefile @@ -5,6 +5,7 @@ top_srcdir = ../../../../.. TEST_PROGS := \ ppp_async.sh \ pppoe.sh \ + pppol2tp.sh \ # end of TEST_PROGS TEST_FILES := \ diff --git a/tools/testing/selftests/net/ppp/config b/tools/testing/selftests/net/ppp/config index b45d25c5b970..8bc3b7c33d5c 100644 --- a/tools/testing/selftests/net/ppp/config +++ b/tools/testing/selftests/net/ppp/config @@ -1,4 +1,6 @@ CONFIG_IPV6=y +CONFIG_L2TP=m +CONFIG_NETKIT=y CONFIG_PACKET=y CONFIG_PPP=m CONFIG_PPP_ASYNC=m @@ -6,4 +8,5 @@ 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/pppol2tp.sh b/tools/testing/selftests/net/ppp/pppol2tp.sh new file mode 100755 index 000000000000..5ddcc6c41c33 --- /dev/null +++ b/tools/testing/selftests/net/ppp/pppol2tp.sh @@ -0,0 +1,93 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +source ppp_common.sh + +NK_SERVER="nk0" +NK_CLIENT="nk1" +OUTER_IP_SERVER="172.16.1.1" +OUTER_IP_CLIENT="172.16.1.2" + +PPPOL2TP_DIR=$(mktemp -d /tmp/pppol2tp.XXXXXX) + +# shellcheck disable=SC2329 +cleanup() { + cleanup_all_ns + rm -rf "$PPPOL2TP_DIR" +} + +trap cleanup EXIT + +require_command xl2tpd +ppp_common_init +modprobe -q l2tp_ppp + +# Create the netkit pair +ip -netns "$NS_CLIENT" link add "$NK_CLIENT" type netkit +ip -netns "$NS_CLIENT" link set "$NK_SERVER" netns "$NS_SERVER" +ip -netns "$NS_SERVER" link set "$NK_SERVER" up +ip -netns "$NS_CLIENT" link set "$NK_CLIENT" up +ip -netns "$NS_SERVER" address add dev "$NK_SERVER" "$OUTER_IP_SERVER" peer "$OUTER_IP_CLIENT" +ip -netns "$NS_CLIENT" address add dev "$NK_CLIENT" "$OUTER_IP_CLIENT" peer "$OUTER_IP_SERVER" + +# Generate configuration files +cat > "$PPPOL2TP_DIR/l2tp-server.conf" < "$PPPOL2TP_DIR/l2tp-client.conf" < "$PPPOL2TP_DIR/l2tp-client.control" + +ppp_test_connectivity + +log_test "PPPoL2TP" + +# Recursion test +# 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 $? + +log_test "PPPoL2TP Recursion" + +exit "$EXIT_STATUS" -- 2.43.0