From: Konstantin Khorenko <[email protected]> The pmtu.sh kselftest sets up a multi-namespace test topology where the host network itself is part of the test setup. Test packets originating from the created namespace are expected to reach test interface created in the host. When firewall rules are present on the host, this traffic may be blocked, causing the test to fail.
Run the test in an isolated network namespace to avoid interference from host firewall rules. Signed-off-by: Konstantin Khorenko <[email protected]> --- tools/testing/selftests/net/Makefile | 2 +- tools/testing/selftests/net/pmtu_wrapper.sh | 4 ++++ 2 files changed, 5 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/net/pmtu_wrapper.sh diff --git a/tools/testing/selftests/net/Makefile b/tools/testing/selftests/net/Makefile index a160e0d816d9..7c6b61e90062 100644 --- a/tools/testing/selftests/net/Makefile +++ b/tools/testing/selftests/net/Makefile @@ -60,7 +60,7 @@ TEST_PROGS := \ netns-name.sh \ netns-sysctl.sh \ nl_netdev.py \ - pmtu.sh \ + pmtu_wrapper.sh \ psock_snd.sh \ reuseaddr_ports_exhausted.sh \ reuseport_addr_any.sh \ diff --git a/tools/testing/selftests/net/pmtu_wrapper.sh b/tools/testing/selftests/net/pmtu_wrapper.sh new file mode 100755 index 000000000000..d43c23ba5155 --- /dev/null +++ b/tools/testing/selftests/net/pmtu_wrapper.sh @@ -0,0 +1,4 @@ +#!/bin/sh +# SPDX-License-Identifier: GPL-2.0 + +./in_netns.sh ./pmtu.sh "$@" -- 2.43.0
