[PATCH net 2/2] selftests: net: add RPL SRH loop test
From: Mark Amirkan via B4 Relay <devnull+markdamirkan.gmail.com@kernel.org>
Date: 2026-09-11 23:11:25
Also in:
b4-sent, linux-kselftest, lkml
Subsystem:
kernel selftest framework, networking [general], the rest · Maintainers:
Shuah Khan, Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Mark Amirkan <redacted> Add two local addresses to a network namespace and exercise RPL route validation. Verify that adjacent local addresses remain valid, while a non-local address between them causes the route to be rejected. Signed-off-by: Mark Amirkan <redacted> Assisted-by: Symbolic --- tools/testing/selftests/net/Makefile | 1 + tools/testing/selftests/net/rpl_srh_loop.sh | 38 +++++++++++++++++++++++++++++ 2 files changed, 39 insertions(+)
diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile
index 3ee3378f8b26..7fe7e38b9c6c 100644
--- a/tools/testing/selftests/net/Makefile
+++ b/tools/testing/selftests/net/Makefile@@ -80,6 +80,7 @@ TEST_PROGS := \ reuseport_addr_any.sh \ route_hint.sh \ route_localnet.sh \ + rpl_srh_loop.sh \ rps_default_mask.sh \ rtnetlink.py \ rtnetlink.sh \
diff --git a/tools/testing/selftests/net/rpl_srh_loop.sh b/tools/testing/selftests/net/rpl_srh_loop.sh
new file mode 100755
index 000000000000..a2e9991d789d
--- /dev/null
+++ b/tools/testing/selftests/net/rpl_srh_loop.sh@@ -0,0 +1,38 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-2.0 + +source lib.sh + +cleanup() +{ + cleanup_ns "$NS" +} + +trap cleanup EXIT + +require_command ip +setup_ns NS || exit $? + +ip -n "$NS" -6 address add 2001:db8:1::1/128 dev lo nodad +ip -n "$NS" -6 address add 2001:db8:3::1/128 dev lo nodad + +if ! ip -n "$NS" -6 route add 2001:db8:10::/64 \ + encap rpl segs 2001:db8:4::1 dev lo 2>/dev/null; then + echo "SKIP: RPL lightweight tunnel support not available" + exit $ksft_skip +fi + +RET=0 +ip -n "$NS" -6 route add 2001:db8:11::/64 \ + encap rpl segs 2001:db8:1::1,2001:db8:3::1 dev lo +check_err $? "Adjacent local addresses were rejected" +log_test "RPL accepts adjacent local addresses" + +RET=0 +ip -n "$NS" -6 route add 2001:db8:12::/64 \ + encap rpl segs 2001:db8:1::1,2001:db8:2::1,2001:db8:3::1 dev lo \ + 2>/dev/null +check_fail $? "Separated local addresses were accepted" +log_test "RPL rejects separated local addresses" + +exit $EXIT_STATUS
--
2.43.0