From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f47.google.com (mail-wm1-f47.google.com [209.85.128.47]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EB0183CE0A7 for ; Sat, 4 Jul 2026 23:47:10 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783208832; cv=none; b=K/SVKSfuuBb/7jNMAueKfGOmZDpeKFSacUmh4bf4qA/rzYFSLl7L1MM+cHmDQrjDkXihyJdaFToOz2cJ3vA4CrXivJJk0yHbCW7lBQiHdMMTOk5S7TI9jYjUjJTTFBZj5RFusmG/a3+L/0qX+PEjdWVbl1r10vGj4TWCbH6c010= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783208832; c=relaxed/simple; bh=c6u0aohjqBU/Q3GU8GYQABiWMQYMkuGgLfxTtqQYFCI=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=t8hjt5Mkz+0sflrNmVN/4uhRQR1G2paU9MkskHeAjNIcy3TOQt2nzDFRRIjcJ4KvVMTQcZPzN4VHawoI1+fBi/IbwD/QU4K6cIczzrFE9hPbgP3JmBlPlY6u+Pqfoe3c0I+wSN5etD5CwU6dey43ADhXZNf9I5GWaTV3/6M4gaE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=f0y1SqKa; arc=none smtp.client-ip=209.85.128.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="f0y1SqKa" Received: by mail-wm1-f47.google.com with SMTP id 5b1f17b1804b1-493c1efb503so2566205e9.2 for ; Sat, 04 Jul 2026 16:47:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783208829; x=1783813629; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=X7c5Kd78tweAwuxL5AUHUB+mgEUmZOa8oNeXbCD1VdM=; b=f0y1SqKafxakni3dHmEzn5b6OBjkXrzGASUceL2GOLaBDShcj0DmjZ+QMiYasY0KBN iZuwVviXYiVJvlc6TcNOI7zzifRImnBhtTgbmQRZQw5DQaQBPHLJ5NM9b2nVpeEOZWSE AC4yx1mtAOtYcHADTSsWM5MgWZEZ5CQImTjurZ9YYQNtIpRigeIyo7UUr9j4hTVYfs62 xUuv1MOMa/uIimZHcWlbgMk16XKPFX+mvXRA2n/WR5vUyOd9gBi8YH0R7Z91o8zEQ+HI Xs/bO/GI1LvrfyMki/DY34gu8cAVDHzj0IiEXL4nCaB/GUK0rwyl1yNlJyoTgGb6tLjY SW2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783208829; x=1783813629; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-gg:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to:content-type; bh=X7c5Kd78tweAwuxL5AUHUB+mgEUmZOa8oNeXbCD1VdM=; b=XohZQ2Bu55Yrs/G6te+qc88XELBNY9+HGQ7Z9HAEmzzIkYoiQP0exPeIciXll1Be1r OnPb3Zu8XV4thgx8FlvVrjz+n7w6BJr0eUx3iuaw0vjqAsE1wJPp37MMnNbBfGgg540m ksNuTZfAudu9LBERvM9nm9xxeXfCn57u/aBZkwjZWJcHwmDwJtK/5FQ7on4o/eTTIYdD Wia3oT4OxjIIrvPWx30worvBm5aniexdWbZHj0J61smdI1K2/8K392nHyoNg09+DgRnM L9oQQOsiTzuzUGhrJiNHw36qHmq5ZFNRnCvd63XWHmVfoDm8YGGVXGNVnLgKD+FaDbMP EFJw== X-Forwarded-Encrypted: i=1; AFNElJ/VmbzX3PGJhISuIjCqx1prZdDJxy5AEEjbysUnm8nFNcV5ez/pJxR/aF4rEW4H9Sz3uyDv4sUjTQVCgRo=@vger.kernel.org X-Gm-Message-State: AOJu0YzluQenNhAuR+/lOqki6enLuF2Xzs6xaNcaW4gerGvgBPJjjkuM Ic2kQJgrtzRCvCQHFldzgFKQCmc4ubfqz2t8TaBYo8yH2zb5hu4Qfamq X-Gm-Gg: AfdE7cnTdNoDS+vNX7dW79UQXYif6iTfW2K0plQCWiJOG1mam2EX4HVRkW3rQD7K5Kf 5NWfk8I35BhAXA5ZMODI2dTbb1d8xZx0rnOdtNGJ9lLAxqzOnArORibtPBmxSsb9cpuhaI0KlZY EiWTmiAlK+yz/ypQ879zrqX2Pglt34OedT8hWHCQ/qnL9Boe6paIhARPzp7U14Tx4YHonNIdb98 gaJ7aoilUp/6eDIKPP40iHjeMcvRVfdQFcUNab8zQXRqkVZkEOQIeT6EstDuyEh1jYw6+1Muutp uIDHcmu6XGCdvkgqLwq7w2edRDUbzuN5G+dMYJ1RQESv7J7DLvPlTLtXZsMI7c6rX4YV3GjfLlt KihH4gKwRKfNVbo8WvgfPZfk+WjAr9SRvsX54piHg6NzINQy+wjqEotJDP0dOUg1FgLRxT66+dz f8QYbE6U6TwTe4eHo96sSWNEV+fEoLB4dvM6iJQs5UfTu1hXubQZfuC5Of65om3n+BlgWSOrMx0 +1/Z9sZH/ot5W4PFxzaQqvdh3PQ/04E5fRXRGX+k6NtX0xozvM= X-Received: by 2002:a05:600c:3515:b0:493:c136:9655 with SMTP id 5b1f17b1804b1-493d0f3e78emr33455825e9.5.1783208829343; Sat, 04 Jul 2026 16:47:09 -0700 (PDT) Received: from hpubt (dynamic-2a02-3100-5cf8-ddfc-6651-06ff-fed8-72a4.310.pool.telefonica.de. [2a02:3100:5cf8:ddfc:6651:6ff:fed8:72a4]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-493cce040b4sm216014125e9.10.2026.07.04.16.47.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 04 Jul 2026 16:47:08 -0700 (PDT) From: Xin Xie To: netdev@vger.kernel.org Cc: "David S . Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Shuah Khan , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, Xin Xie Subject: [PATCH net-next 4/4] selftests: net: hsr: add PRP RedBox test Date: Sat, 4 Jul 2026 23:47:04 +0000 Message-ID: <20260704234704.4297-5-xiexinet@gmail.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260704234704.4297-1-xiexinet@gmail.com> References: <20260704234704.4297-1-xiexinet@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a kselftest that builds a PRP RedBox (interlink) with a SAN behind the interlink and a peer DANP, and checks bidirectional unicast across the interlink, preservation of the SAN source MAC on the PRP network, and that the proxy-announce supervision frame carries the RedBox-MAC TLV (Type 30) terminated by an EOT marker. It reuses the hsr_common.sh / lib.sh helpers and skips cleanly on a kernel or iproute2 without PRP interlink support. Signed-off-by: Xin Xie --- tools/testing/selftests/net/hsr/Makefile | 1 + .../selftests/net/hsr/hsr_prp_redbox.sh | 96 +++++++++++++++++++ 2 files changed, 97 insertions(+) create mode 100755 tools/testing/selftests/net/hsr/hsr_prp_redbox.sh diff --git a/tools/testing/selftests/net/hsr/Makefile b/tools/testing/selftests/net/hsr/Makefile index 31fb9326c..2150e487a 100644 --- a/tools/testing/selftests/net/hsr/Makefile +++ b/tools/testing/selftests/net/hsr/Makefile @@ -4,6 +4,7 @@ top_srcdir = ../../../../.. TEST_PROGS := \ hsr_ping.sh \ + hsr_prp_redbox.sh \ hsr_redbox.sh \ link_faults.sh \ prp_ping.sh \ diff --git a/tools/testing/selftests/net/hsr/hsr_prp_redbox.sh b/tools/testing/selftests/net/hsr/hsr_prp_redbox.sh new file mode 100755 index 000000000..8ae36737b --- /dev/null +++ b/tools/testing/selftests/net/hsr/hsr_prp_redbox.sh @@ -0,0 +1,96 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 +# +# Test a PRP RedBox (PRP-SAN): a SAN that sits behind the interlink port must +# reach, and be reached by, a peer DANP on the PRP network with its own MAC +# preserved on the wire, and the RedBox must announce the SAN with a RedBox-MAC +# TLV (terminated by an EOT marker) in its PRP supervision frames. +# +# RB PRP RedBox: prp0 over rb_a/rb_b (LAN A/B) + interlink rb_il +# PEER peer DANP : prp0 over pe_a/pe_b, 100.64.0.2 +# SAN SAN : san_il, own MAC, 100.64.0.51 (behind the interlink) + +ipv6=false + +source ./hsr_common.sh + +check_prerequisites + +if ! command -v tcpdump >/dev/null 2>&1; then + echo "SKIP: This test requires tcpdump" + exit $ksft_skip +fi + +if ! ip link help hsr 2>&1 | grep -q interlink; then + echo "SKIP: iproute2 too old (no hsr interlink support)" + exit $ksft_skip +fi + +setup_ns RB PEER SAN +trap 'cleanup_ns "$RB" "$PEER" "$SAN"' EXIT + +ip link add rb_a netns "$RB" type veth peer name pe_a netns "$PEER" +ip link add rb_b netns "$RB" type veth peer name pe_b netns "$PEER" +ip link add rb_il netns "$RB" type veth peer name san_il netns "$SAN" + +ip -n "$RB" link set rb_a up +ip -n "$RB" link set rb_b up +ip -n "$RB" link set rb_il up +ip -n "$PEER" link set pe_a up +ip -n "$PEER" link set pe_b up +ip -n "$SAN" link set san_il up +ip -n "$SAN" addr add 100.64.0.51/24 dev san_il + +# Feature gate: PRP interlink (RedBox) creation. A kernel without PRP RedBox +# support rejects this with -EINVAL, so SKIP rather than FAIL. +if ! ip -n "$RB" link add name prp0 type hsr slave1 rb_a slave2 rb_b \ + interlink rb_il proto 1 2>/dev/null; then + echo "SKIP: kernel without PRP RedBox (interlink) support" + exit $ksft_skip +fi +ip -n "$RB" link set prp0 up +ip -n "$PEER" link add name prp0 type hsr slave1 pe_a slave2 pe_b proto 1 +ip -n "$PEER" link set prp0 up +ip -n "$PEER" addr add 100.64.0.2/24 dev prp0 +sleep 1 + +san_mac=$(ip -n "$SAN" -br link show san_il | awk '{print $3}') +rb_mac=$(ip -n "$RB" -br link show rb_il | awk '{print $3}') + +# Bidirectional unicast across the interlink. +do_ping "$PEER" 100.64.0.51 +do_ping "$SAN" 100.64.0.2 +stop_if_error "PRP RedBox bidirectional unicast failed" + +# The SAN source MAC must be preserved on the PRP network, not laundered to the +# RedBox MAC: the peer resolves the SAN IP to the SAN's own MAC. +neigh=$(ip -n "$PEER" neigh show 100.64.0.51 | awk '{print $5}') +if [ "$neigh" != "$san_mac" ]; then + echo "SAN MAC preservation [ FAIL ]: peer resolved 100.64.0.51 to" \ + "'$neigh', expected $san_mac" 1>&2 + ret=1 +fi +stop_if_error "SAN MAC not preserved on the PRP network" + +# The proxy-announce supervision frame must carry, in order, the life-check TLV +# (type 0x14, len 6) + MacAddressA == SAN MAC + the RedBox-MAC TLV (type 0x1e, +# len 6) + MacAddressRedBox == RedBox MAC + the EOT marker (0x0000). +( ip netns exec "$SAN" ping -i 0.2 -q 100.64.0.2 >/dev/null 2>&1 & ) +cap=$(ip netns exec "$PEER" timeout 5 tcpdump -i pe_a -nn -x \ + "ether proto 0x88fb and ether src $rb_mac" 2>/dev/null || true) +ip netns exec "$SAN" pkill -f "ping -i 0.2" 2>/dev/null || true + +san_hex=$(echo "$san_mac" | tr -d ':') +rb_hex=$(echo "$rb_mac" | tr -d ':') +# Reassemble contiguous frame hex: drop the "0x0010:" offset labels and spaces. +frame_hex=$(echo "$cap" | awk '/^[[:space:]]*0x[0-9a-f]+:/ { + sub(/^[[:space:]]*0x[0-9a-f]+:[[:space:]]*/, ""); gsub(/ /, ""); printf "%s", $0 }') +if ! echo "$frame_hex" | grep -q "1406${san_hex}1e06${rb_hex}0000"; then + echo "supervision RedBox-MAC TLV [ FAIL ]: missing SAN MAC, Type-30" \ + "payload, or EOT" 1>&2 + ret=1 +fi +stop_if_error "PRP RedBox supervision RedBox-MAC TLV/EOT check failed" + +echo "INFO: PRP RedBox (PRP-SAN) conformance checks passed" +exit $ret -- 2.53.0