Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
31 lines
866 B
Python
Executable File
31 lines
866 B
Python
Executable File
#!/usr/bin/env python3
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
from lib.py import ksft_exit, ksft_run, ksft_ge, RtnlAddrFamily
|
|
import socket
|
|
|
|
IPV4_ALL_HOSTS_MULTICAST = b'\xe0\x00\x00\x01'
|
|
|
|
def dump_mcaddr_check(rtnl: RtnlAddrFamily) -> None:
|
|
"""
|
|
Verify that at least one interface has the IPv4 all-hosts multicast address.
|
|
At least the loopback interface should have this address.
|
|
"""
|
|
|
|
addresses = rtnl.getmulticast({"ifa-family": socket.AF_INET}, dump=True)
|
|
|
|
all_host_multicasts = [
|
|
addr for addr in addresses if addr['multicast'] == IPV4_ALL_HOSTS_MULTICAST
|
|
]
|
|
|
|
ksft_ge(len(all_host_multicasts), 1,
|
|
"No interface found with the IPv4 all-hosts multicast address")
|
|
|
|
def main() -> None:
|
|
rtnl = RtnlAddrFamily()
|
|
ksft_run([dump_mcaddr_check], args=(rtnl, ))
|
|
ksft_exit()
|
|
|
|
if __name__ == "__main__":
|
|
main()
|