Commit 01632500 authored by Gal Pressman's avatar Gal Pressman Committed by Jakub Kicinski
Browse files

selftests: drv-net: Make rand_port() get a port more reliably 



Instead of guessing a port and checking whether it's available, get an
available port from the OS.

Reviewed-by: default avatarNimrod Oren <noren@nvidia.com>
Signed-off-by: default avatarGal Pressman <gal@nvidia.com>
Link: https://patch.msgid.link/20250224174416.499070-4-gal@nvidia.com


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 4d20c9f2

tools/testing/selftests/net/lib/py/utils.py

+4 −11
Original line number Diff line number Diff line
@@ -187,18 +187,11 @@ def ethtool(args, json=None, ns=None, host=None): 


def rand_port():

    """

    Get a random unprivileged port, try to make sure it's not already used.

    Get a random unprivileged port.

    """

    for _ in range(1000):

        port = random.randint(10000, 65535)

        try:

    with socket.socket(socket.AF_INET6, socket.SOCK_STREAM) as s:

                s.bind(("", port))

            return port

        except OSError as e:

            if e.errno != errno.EADDRINUSE:

                raise

    raise Exception("Can't find any free unprivileged port")

        s.bind(("", 0))

        return s.getsockname()[1]





def wait_port_listen(port, proto="tcp", ns=None, host=None, sleep=0.005, deadline=5):