From patchwork Sat Apr 20 02:52:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636922 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6144F8F55; Sat, 20 Apr 2024 02:52:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581561; cv=none; b=SU+qWck8aAHLysoxPtfbQknBGnWczEO6uwDlZAHNGfPxM8PQPQwfEtgjrgE/HkN/Gz2ffnOspq9Q71Qo3rJUsDnbvNP1ScgFVvn2YXQnrTqg6D+EtGyLCSw65FByatqvGcQlNU9gVifeH1vCoYiOyzIo4ar65RyoKVBuvNuIjtg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581561; c=relaxed/simple; bh=QlfTl8B8VBNZuMl0BUCRJD+FfKSrEnCFkSc0QRCUxYg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=W9RkSjyp3jKgFYY+qhP9UgI1FJB8LeoT/miYrJrC/80G20fGt3ZnL2U3RvhqXmGrZN/Y2JYabNYs3tHhFKuLLQLXniFydpt0yGFkw/lFSWx12uXB7OKBGRRMSwMnoBwaJxlm5Nszym14VB/6radWEkcJFaxLtH3Ksx0txcah95w= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OJc3bo3l; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OJc3bo3l" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 7DA68C2BD11; Sat, 20 Apr 2024 02:52:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581560; bh=QlfTl8B8VBNZuMl0BUCRJD+FfKSrEnCFkSc0QRCUxYg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=OJc3bo3lJ1A3jUoCpZdKbeKJn9qMxIIARGQ+Yp7XRsuWiOh5igc4CKq4v4fMbQGpL /wbmXkY0xJnBDx/AlGF6IwNC59Pztnm3zGuypHepO5DbLZ9Dd4XXkNiJctRDkItolc pMJcaWhwkoIJPC7RJxY3Z4X80Ire/uGhFl3RgeNZzD7cQxQaklwLU/ePJssFCwPwW1 WVDsrPc3dTbDvKf2jl57knXjydI7Q62BMUT8vvfHLsLo5gHS60tVTXngb8/4AomA4W 1SMNkY1q/SYEVGrFoiR7+g8XlXt0dfHExA6Er8hgdBP7vVoK2b33WbYYqeHcWJPc4P WcMPL9YAY560Q== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 1/7] selftests: drv-net: define endpoint structures Date: Fri, 19 Apr 2024 19:52:31 -0700 Message-ID: <20240420025237.3309296-2-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Define the remote endpoint "model". To execute most meaningful device driver tests we need to be able to communicate with a remote system, and have it send traffic to the device under test. Various test environments will have different requirements. 0) "Local" netdevsim-based testing can simply use net namespaces. netdevsim supports connecting two devices now, to form a veth-like construct. 1) Similarly on hosts with multiple NICs, the NICs may be connected together with a loopback cable or internal device loopback. One interface may be placed into separate netns, and tests would proceed much like in the netdevsim case. Note that the loopback config or the moving of one interface into a netns is not expected to be part of selftest code. 2) Some systems may need to communicate with the remote endpoint via SSH. 3) Last but not least environment may have its own custom communication method. Fundamentally we only need two operations: - run a command remotely - deploy a binary (if some tool we need is built as part of kselftests) Wrap these two in a class. Use dynamic loading to load the Remote class. This will allow very easy definition of other communication methods without bothering upstream code base. Stick to the "simple" / "no unnecessary abstractions" model for referring to the remote endpoints. The host / remote object are passed as an argument to the usual cmd() or ip() invocation. For example: ip("link show", json=True, host=remote) Signed-off-by: Jakub Kicinski --- v4: - bump timeout to 5 sec, in case of really slow SSH v3: - make Remote() return Popen() object - always operate on absolute paths v2: - rename Endpoint -> Remote --- .../selftests/drivers/net/lib/py/__init__.py | 1 + .../selftests/drivers/net/lib/py/remote.py | 15 +++++++ .../drivers/net/lib/py/remote_netns.py | 21 ++++++++++ .../drivers/net/lib/py/remote_ssh.py | 39 +++++++++++++++++++ tools/testing/selftests/net/lib/py/utils.py | 17 ++++---- 5 files changed, 85 insertions(+), 8 deletions(-) create mode 100644 tools/testing/selftests/drivers/net/lib/py/remote.py create mode 100644 tools/testing/selftests/drivers/net/lib/py/remote_netns.py create mode 100644 tools/testing/selftests/drivers/net/lib/py/remote_ssh.py diff --git a/tools/testing/selftests/drivers/net/lib/py/__init__.py b/tools/testing/selftests/drivers/net/lib/py/__init__.py index 4653dffcd962..4789c1a4282d 100644 --- a/tools/testing/selftests/drivers/net/lib/py/__init__.py +++ b/tools/testing/selftests/drivers/net/lib/py/__init__.py @@ -15,3 +15,4 @@ KSFT_DIR = (Path(__file__).parent / "../../../..").resolve() sys.exit(4) from .env import * +from .remote import Remote diff --git a/tools/testing/selftests/drivers/net/lib/py/remote.py b/tools/testing/selftests/drivers/net/lib/py/remote.py new file mode 100644 index 000000000000..b1780b987722 --- /dev/null +++ b/tools/testing/selftests/drivers/net/lib/py/remote.py @@ -0,0 +1,15 @@ +# SPDX-License-Identifier: GPL-2.0 + +import os +import importlib + +_modules = {} + +def Remote(kind, args, src_path): + global _modules + + if kind not in _modules: + _modules[kind] = importlib.import_module("..remote_" + kind, __name__) + + dir_path = os.path.abspath(src_path + "/../") + return getattr(_modules[kind], "Remote")(args, dir_path) diff --git a/tools/testing/selftests/drivers/net/lib/py/remote_netns.py b/tools/testing/selftests/drivers/net/lib/py/remote_netns.py new file mode 100644 index 000000000000..7d5eeb0271bc --- /dev/null +++ b/tools/testing/selftests/drivers/net/lib/py/remote_netns.py @@ -0,0 +1,21 @@ +# SPDX-License-Identifier: GPL-2.0 + +import os +import subprocess + +from lib.py import cmd + + +class Remote: + def __init__(self, name, dir_path): + self.name = name + self.dir_path = dir_path + + def cmd(self, comm): + return subprocess.Popen(["ip", "netns", "exec", self.name, "bash", "-c", comm], + stdout=subprocess.PIPE, stderr=subprocess.PIPE) + + def deploy(self, what): + if os.path.isabs(what): + return what + return os.path.abspath(self.dir_path + "/" + what) diff --git a/tools/testing/selftests/drivers/net/lib/py/remote_ssh.py b/tools/testing/selftests/drivers/net/lib/py/remote_ssh.py new file mode 100644 index 000000000000..924addde19a3 --- /dev/null +++ b/tools/testing/selftests/drivers/net/lib/py/remote_ssh.py @@ -0,0 +1,39 @@ +# SPDX-License-Identifier: GPL-2.0 + +import os +import string +import subprocess +import random + +from lib.py import cmd + + +class Remote: + def __init__(self, name, dir_path): + self.name = name + self.dir_path = dir_path + self._tmpdir = None + + def __del__(self): + if self._tmpdir: + cmd("rm -rf " + self._tmpdir, host=self) + self._tmpdir = None + + def cmd(self, comm): + return subprocess.Popen(["ssh", "-q", self.name, comm], + stdout=subprocess.PIPE, stderr=subprocess.PIPE) + + def _mktmp(self): + return ''.join(random.choice(string.ascii_lowercase) for _ in range(8)) + + def deploy(self, what): + if not self._tmpdir: + self._tmpdir = "/tmp/" + self._mktmp() + cmd("mkdir " + self._tmpdir, host=self) + file_name = self._tmpdir + "/" + self._mktmp() + os.path.basename(what) + + if not os.path.isabs(what): + what = os.path.abspath(self.dir_path + "/" + what) + + cmd(f"scp {what} {self.name}:{file_name}") + return file_name diff --git a/tools/testing/selftests/net/lib/py/utils.py b/tools/testing/selftests/net/lib/py/utils.py index 19612348c30d..7347d0c0ff05 100644 --- a/tools/testing/selftests/net/lib/py/utils.py +++ b/tools/testing/selftests/net/lib/py/utils.py @@ -4,10 +4,8 @@ import json as _json import subprocess class cmd: - def __init__(self, comm, shell=True, fail=True, ns=None, background=False): + def __init__(self, comm, shell=True, fail=True, ns=None, background=False, host=None): if ns: - if isinstance(ns, NetNS): - ns = ns.name comm = f'ip netns exec {ns} ' + comm self.stdout = None @@ -15,15 +13,18 @@ import subprocess self.ret = None self.comm = comm - self.proc = subprocess.Popen(comm, shell=shell, stdout=subprocess.PIPE, - stderr=subprocess.PIPE) + if host: + self.proc = host.cmd(comm) + else: + self.proc = subprocess.Popen(comm, shell=shell, stdout=subprocess.PIPE, + stderr=subprocess.PIPE) if not background: self.process(terminate=False, fail=fail) def process(self, terminate=True, fail=None): if terminate: self.proc.terminate() - stdout, stderr = self.proc.communicate() + stdout, stderr = self.proc.communicate(timeout=5) self.stdout = stdout.decode("utf-8") self.stderr = stderr.decode("utf-8") self.proc.stdout.close() @@ -37,12 +38,12 @@ import subprocess (self.proc.args, stdout, stderr)) -def ip(args, json=None, ns=None): +def ip(args, json=None, ns=None, host=None): cmd_str = "ip " if json: cmd_str += '-j ' cmd_str += args - cmd_obj = cmd(cmd_str, ns=ns) + cmd_obj = cmd(cmd_str, ns=ns, host=host) if json: return _json.loads(cmd_obj.stdout) return cmd_obj From patchwork Sat Apr 20 02:52:32 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636923 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A18DBD52A; Sat, 20 Apr 2024 02:52:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581561; cv=none; b=RPANyCjygDEvcBz0h0Qz5A286cWoWlczZ/MwJkA+iyDEhp6n8yFTYBNETYJTmD27gpyNXWV14J5IEKGLo0qc6SlAvcTiTdFKTbT6THvmD+WJaRN+lVB+GBmYYI1qAAVSmid8CX/O8vvho2gaQGTvMyzClQ+tP1as/EMwJ5lNTy4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581561; c=relaxed/simple; bh=U5+EVNFryCl6AbqRDTDECqncYZkgnEzOhvv/pOI/KNg=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=YrHBYE/Azjk5QFMSJOkvWLzVqZ+MI/hBdNiMRS0KayDR3IbszzaFlOWuZhf4Ddfl5hOuTIOtHwiHsl6OVJAx9xZ2iHUu7Adaba5oOESuwmme6HCDxhqVNCr7ur7GMZp2wmIre22sd6FAAyGl8+RcL9C9GySbK8EHkuQAef2h3zc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=cYejC5DY; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="cYejC5DY" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 197F7C32786; Sat, 20 Apr 2024 02:52:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581561; bh=U5+EVNFryCl6AbqRDTDECqncYZkgnEzOhvv/pOI/KNg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=cYejC5DYo9XJevwDTlKVoqiUd51VDKiiiDBiwPIAt0mlvSIeEG1l7Pp8Id2kaKYGB hZqZFC39fLu7ICKLkoXl7BSr0Y6lEwql7xd30P+W0oOmXz2zMt9QGLNgN9c7PrwQm6 oyanIlTHbiT9orTDoMR/55afMIvHiAsQfffnbvFn5q+69B7njB65SMOrbOZK8Qet1T +Ci8SN1EI8mcxKv1pgHtlHeCsSiI5PxP4BYylpEgueX18qHQ0+9FIH0JQSy+0pVGkA FdarVxIPBlrO5uARbhtmO94wJAPG6tvW0QlkRtGqcIW1wl9cHSS5/LsDRCPUxnrT4m HmEHlcH3oMekg== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 2/7] selftests: drv-net: factor out parsing of the env Date: Fri, 19 Apr 2024 19:52:32 -0700 Message-ID: <20240420025237.3309296-3-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The tests with a remote end will use a different class, for clarity, but will also need to parse the env. So factor parsing the env out to a function. Signed-off-by: Jakub Kicinski --- .../selftests/drivers/net/lib/py/env.py | 43 +++++++++++-------- 1 file changed, 26 insertions(+), 17 deletions(-) diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index e1abe9491daf..a081e168f3db 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -6,12 +6,36 @@ from pathlib import Path from lib.py import ip from lib.py import NetdevSimDev + +def _load_env_file(src_path): + env = os.environ.copy() + + src_dir = Path(src_path).parent.resolve() + if not (src_dir / "net.config").exists(): + return env + + lexer = shlex.shlex(open((src_dir / "net.config").as_posix(), 'r').read()) + k = None + for token in lexer: + if k is None: + k = token + env[k] = "" + elif token == "=": + pass + else: + env[k] = token + k = None + return env + + class NetDrvEnv: + """ + Class for a single NIC / host env, with no remote end + """ def __init__(self, src_path): self._ns = None - self.env = os.environ.copy() - self._load_env_file(src_path) + self.env = _load_env_file(src_path) if 'NETIF' in self.env: self.dev = ip("link show dev " + self.env['NETIF'], json=True)[0] @@ -34,19 +58,4 @@ from lib.py import NetdevSimDev self._ns.remove() self._ns = None - def _load_env_file(self, src_path): - src_dir = Path(src_path).parent.resolve() - if not (src_dir / "net.config").exists(): - return - lexer = shlex.shlex(open((src_dir / "net.config").as_posix(), 'r').read()) - k = None - for token in lexer: - if k is None: - k = token - self.env[k] = "" - elif token == "=": - pass - else: - self.env[k] = token - k = None From patchwork Sat Apr 20 02:52:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636924 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D378FC1C; Sat, 20 Apr 2024 02:52:42 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581562; cv=none; b=qbUJXNEY/KJOt5LWRW8Kfj/D39SKR5r7EI9tougk79uJE9Slz0cLrYZetueT4c06eF5kEBRdPx6FZxtmwUUNDVf0E0LIhDyVsZ238EQlolgmm2/xMZxnH56e5SuTqrd3VxoOroFONcvOoOtFWaYANqH80SV3mKQ3J4qEyOYCwPY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581562; c=relaxed/simple; bh=LWouE9X7rzpJYEbBLAu3hDxweSMYx1hX1X8QWpU0+sk=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=d//L0b/TKnZiGorbbGaTAFjKSkryqoBpOyQtIymbd1TbOU1MOWZ3Mqj4jILO6r5NbGQ4B1NwGH6nN87hovuO2CL9OfCcEHXYX1R7rR5xtCNkopiqFwCCpI9h9jS+czYVcpBSVC7klFuvqwNv3yzLlHP2yX5sH/RDZlFff33u8Zs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fQqJzH1N; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fQqJzH1N" Received: by smtp.kernel.org (Postfix) with ESMTPSA id A8057C32781; Sat, 20 Apr 2024 02:52:41 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581562; bh=LWouE9X7rzpJYEbBLAu3hDxweSMYx1hX1X8QWpU0+sk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=fQqJzH1NahRwJr4KdnlGDg4kLPSpeI4Ubxzpa4OSWDaNpaOeb3g63oSdkh2nl+y3p sEbBuLgpiTzdLhyjv/MgJtsF9AMOpVZJYwFKInVOjEYFJ9Qw84AsKxtJtMuTYjyAqR M7yPbe6HkAWPGREpAUY03vIvukRI2mPMrEcERkD8tnmpfdsBYvAAwd8RzHaF5FRn9r 0hEG7tryPe/ph8gUBfrZoY/PIv9M28nldmiu3e0tHHRN/+jCXHxXBFtzbk7IasZswp XxUbLrSIi3bA+ep3S+MIHJJv81ag/f/r+bsVs9VMYXEWJivXwIZ5Q4Nwd+eXidqyUg SJn58zwag3Evg== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 3/7] selftests: drv-net: construct environment for running tests which require an endpoint Date: Fri, 19 Apr 2024 19:52:33 -0700 Message-ID: <20240420025237.3309296-4-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Nothing surprising here, hopefully. Wrap the variables from the environment into a class or spawn a netdevsim based env and pass it to the tests. Signed-off-by: Jakub Kicinski --- .../testing/selftests/drivers/net/README.rst | 33 +++++++ .../selftests/drivers/net/lib/py/env.py | 98 ++++++++++++++++++- .../testing/selftests/net/lib/py/__init__.py | 1 + tools/testing/selftests/net/lib/py/netns.py | 31 ++++++ 4 files changed, 162 insertions(+), 1 deletion(-) create mode 100644 tools/testing/selftests/net/lib/py/netns.py diff --git a/tools/testing/selftests/drivers/net/README.rst b/tools/testing/selftests/drivers/net/README.rst index 5ef7c417d431..0cbab33dad1f 100644 --- a/tools/testing/selftests/drivers/net/README.rst +++ b/tools/testing/selftests/drivers/net/README.rst @@ -23,8 +23,41 @@ Variables can be set in the environment or by creating a net.config # Variable set in a file NETIF=eth0 +Please note that the config parser is very simple, if there are +any non-alphanumeric characters in the value it needs to be in +double quotes. + NETIF ~~~~~ Name of the netdevice against which the test should be executed. When empty or not set software devices will be used. + +LOCAL_V4, LOCAL_V6, REMOTE_V4, REMOTE_V6 +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ + +Local and remote endpoint IP addresses. + +REMOTE_TYPE +~~~~~~~~~~~ + +Communication method used to run commands on the remote endpoint. +Test framework has built-in support for ``netns`` and ``ssh`` channels. +``netns`` assumes the "remote" interface is part of the same +host, just moved to the specified netns. +``ssh`` communicates with remote endpoint over ``ssh`` and ``scp``. +Using persistent SSH connections is strongly encouraged to avoid +the latency of SSH connection setup on every command. + +Communication methods are defined by classes in ``lib/py/remote_{name}.py``. +It should be possible to add a new method without modifying any of +the framework, by simply adding an appropriately named file to ``lib/py``. + +REMOTE_ARGS +~~~~~~~~~~~ + +Arguments used to construct the communication channel. +Communication channel dependent:: + + for netns - name of the "remote" namespace + for ssh - name/address of the remote host diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index a081e168f3db..579c5b34e6fd 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -4,7 +4,8 @@ import os import shlex from pathlib import Path from lib.py import ip -from lib.py import NetdevSimDev +from lib.py import NetNS, NetdevSimDev +from .remote import Remote def _load_env_file(src_path): @@ -59,3 +60,98 @@ from lib.py import NetdevSimDev self._ns = None +class NetDrvEpEnv: + """ + Class for an environment with a local device and "remote endpoint" + which can be used to send traffic in. + + For local testing it creates two network namespaces and a pair + of netdevsim devices. + """ + + # Network prefixes used for local tests + nsim_v4_pfx = "192.0.2." + nsim_v6_pfx = "2001:db8::" + + def __init__(self, src_path): + + self.env = _load_env_file(src_path) + + # Things we try to destroy + self.remote = None + # These are for local testing state + self._netns = None + self._ns = None + self._ns_peer = None + + if "NETIF" in self.env: + self.dev = ip("link show dev " + self.env['NETIF'], json=True)[0] + + self.v4 = self.env.get("LOCAL_V4") + self.v6 = self.env.get("LOCAL_V6") + self.remote_v4 = self.env.get("REMOTE_V4") + self.remote_v6 = self.env.get("REMOTE_V6") + kind = self.env["REMOTE_TYPE"] + args = self.env["REMOTE_ARGS"] + else: + self.create_local() + + self.dev = self._ns.nsims[0].dev + + self.v4 = self.nsim_v4_pfx + "1" + self.v6 = self.nsim_v6_pfx + "1" + self.remote_v4 = self.nsim_v4_pfx + "2" + self.remote_v6 = self.nsim_v6_pfx + "2" + kind = "netns" + args = self._netns.name + + self.remote = Remote(kind, args, src_path) + + self.addr = self.v6 if self.v6 else self.v4 + self.remote_addr = self.remote_v6 if self.remote_v6 else self.remote_v4 + + self.ifname = self.dev['ifname'] + self.ifindex = self.dev['ifindex'] + + def create_local(self): + self._netns = NetNS() + self._ns = NetdevSimDev() + self._ns_peer = NetdevSimDev(ns=self._netns) + + with open("/proc/self/ns/net") as nsfd0, \ + open("/var/run/netns/" + self._netns.name) as nsfd1: + ifi0 = self._ns.nsims[0].ifindex + ifi1 = self._ns_peer.nsims[0].ifindex + NetdevSimDev.ctrl_write('link_device', + f'{nsfd0.fileno()}:{ifi0} {nsfd1.fileno()}:{ifi1}') + + ip(f" addr add dev {self._ns.nsims[0].ifname} {self.nsim_v4_pfx}1/24") + ip(f"-6 addr add dev {self._ns.nsims[0].ifname} {self.nsim_v6_pfx}1/64 nodad") + ip(f" link set dev {self._ns.nsims[0].ifname} up") + + ip(f" addr add dev {self._ns_peer.nsims[0].ifname} {self.nsim_v4_pfx}2/24", ns=self._netns) + ip(f"-6 addr add dev {self._ns_peer.nsims[0].ifname} {self.nsim_v6_pfx}2/64 nodad", ns=self._netns) + ip(f" link set dev {self._ns_peer.nsims[0].ifname} up", ns=self._netns) + + def __enter__(self): + return self + + def __exit__(self, ex_type, ex_value, ex_tb): + """ + __exit__ gets called at the end of a "with" block. + """ + self.__del__() + + def __del__(self): + if self._ns: + self._ns.remove() + self._ns = None + if self._ns_peer: + self._ns_peer.remove() + self._ns_peer = None + if self._netns: + del self._netns + self._netns = None + if self.remote: + del self.remote + self.remote = None diff --git a/tools/testing/selftests/net/lib/py/__init__.py b/tools/testing/selftests/net/lib/py/__init__.py index ded7102df18a..b6d498d125fe 100644 --- a/tools/testing/selftests/net/lib/py/__init__.py +++ b/tools/testing/selftests/net/lib/py/__init__.py @@ -2,6 +2,7 @@ from .consts import KSRC from .ksft import * +from .netns import NetNS from .nsim import * from .utils import * from .ynl import NlError, YnlFamily, EthtoolFamily, NetdevFamily, RtnlFamily diff --git a/tools/testing/selftests/net/lib/py/netns.py b/tools/testing/selftests/net/lib/py/netns.py new file mode 100644 index 000000000000..ecff85f9074f --- /dev/null +++ b/tools/testing/selftests/net/lib/py/netns.py @@ -0,0 +1,31 @@ +# SPDX-License-Identifier: GPL-2.0 + +from .utils import ip +import random +import string + + +class NetNS: + def __init__(self, name=None): + if name: + self.name = name + else: + self.name = ''.join(random.choice(string.ascii_lowercase) for _ in range(8)) + ip('netns add ' + self.name) + + def __del__(self): + if self.name: + ip('netns del ' + self.name) + self.name = None + + def __enter__(self): + return self + + def __exit__(self, ex_type, ex_value, ex_tb): + self.__del__() + + def __str__(self): + return self.name + + def __repr__(self): + return f"NetNS({self.name})" From patchwork Sat Apr 20 02:52:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636925 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 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header.d=kernel.org header.i=@kernel.org header.b=AYAL/5Zq; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="AYAL/5Zq" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3E04BC2BD11; Sat, 20 Apr 2024 02:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581562; bh=Xcg/4YWNTZU4GPQmaDdLsBXVgUTYXSPrMsnia87nxsg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=AYAL/5Zqev8NfUHkKuP+MlamFPrRSBsxOXZoJIl5MA4jvESqszJqmmudtSRVIJeei +IoWDgf3B52Vv/r+bB9ZaKOKGS+GYv1wUT94ij56Vn3oEnjnmw86B0HdD/7bqK7XjI y1XvuVorStz4WM6JaQuw2TXBFgRpi+ldWiZT/KuP9sdzGfZTjzsgn2+wm7AFvlkc9+ HDCbkyBz3rHHGHnhv+XlvVAAVpn8eKzh0eheVWMp1Shiur42kCT6qFc8k3xjCN9HkO HiksQ2HpuaJBce4VIcaH/jfueGfuyGqrBnoL2by+A04VhqI+TEq/mp8G2a9GOKFw4Z 6gKf/wn53zPlg== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 4/7] selftests: drv-net: add a trivial ping test Date: Fri, 19 Apr 2024 19:52:34 -0700 Message-ID: <20240420025237.3309296-5-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Add a very simple test for testing with a remote system. Both IPv4 and IPv6 connectivity is optional, later change will add checks to skip tests based on available addresses. Using netdevsim: $ ./run_kselftest.sh -t drivers/net:ping.py TAP version 13 1..1 # timeout set to 45 # selftests: drivers/net: ping.py # KTAP version 1 # 1..2 # ok 1 ping.test_v4 # ok 2 ping.test_v6 # # Totals: pass:2 fail:0 xfail:0 xpass:0 skip:0 error:0 ok 1 selftests: drivers/net: ping.py Command line SSH: $ NETIF=virbr0 REMOTE_TYPE=ssh REMOTE_ARGS=root@192.168.122.123 \ LOCAL_V4=192.168.122.1 REMOTE_V4=192.168.122.123 \ ./tools/testing/selftests/drivers/net/ping.py KTAP version 1 1..2 ok 1 ping.test_v4 ok 2 ping.test_v6 # SKIP Test requires IPv6 connectivity # Totals: pass:1 fail:0 xfail:1 xpass:0 skip:0 error:0 Existing devices placed in netns (and using net.config): $ cat drivers/net/net.config NETIF=veth0 REMOTE_TYPE=netns REMOTE_ARGS=red LOCAL_V4="192.168.1.1" REMOTE_V4="192.168.1.2" $ ./run_kselftest.sh -t drivers/net:ping.py TAP version 13 1..1 # timeout set to 45 # selftests: drivers/net: ping.py # KTAP version 1 # 1..2 # ok 1 ping.test_v4 # ok 2 ping.test_v6 # SKIP Test requires IPv6 connectivity # # Totals: pass:1 fail:0 xfail:1 xpass:0 skip:0 error:0 Signed-off-by: Jakub Kicinski --- v4: - move adding the "require_XYZ()" checks to last patch --- tools/testing/selftests/drivers/net/Makefile | 5 +++- tools/testing/selftests/drivers/net/ping.py | 27 ++++++++++++++++++++ 2 files changed, 31 insertions(+), 1 deletion(-) create mode 100755 tools/testing/selftests/drivers/net/ping.py diff --git a/tools/testing/selftests/drivers/net/Makefile b/tools/testing/selftests/drivers/net/Makefile index 379cdb1960a7..754ec643768a 100644 --- a/tools/testing/selftests/drivers/net/Makefile +++ b/tools/testing/selftests/drivers/net/Makefile @@ -2,6 +2,9 @@ TEST_INCLUDES := $(wildcard lib/py/*.py) -TEST_PROGS := stats.py +TEST_PROGS := \ + ping.py \ + stats.py \ +# end of TEST_PROGS include ../../lib.mk diff --git a/tools/testing/selftests/drivers/net/ping.py b/tools/testing/selftests/drivers/net/ping.py new file mode 100755 index 000000000000..e75908d7c558 --- /dev/null +++ b/tools/testing/selftests/drivers/net/ping.py @@ -0,0 +1,27 @@ +#!/usr/bin/env python3 +# SPDX-License-Identifier: GPL-2.0 + +from lib.py import ksft_run, ksft_exit +from lib.py import NetDrvEpEnv +from lib.py import cmd + + +def test_v4(cfg) -> None: + cmd(f"ping -c 1 -W0.5 {cfg.remote_v4}") + cmd(f"ping -c 1 -W0.5 {cfg.v4}", host=cfg.remote) + + +def test_v6(cfg) -> None: + cmd(f"ping -c 1 -W0.5 {cfg.remote_v6}") + cmd(f"ping -c 1 -W0.5 {cfg.v6}", host=cfg.remote) + + +def main() -> None: + with NetDrvEpEnv(__file__) as cfg: + ksft_run([test_v4, test_v6], + args=(cfg, )) + ksft_exit() + + +if __name__ == "__main__": + main() From patchwork Sat Apr 20 02:52:35 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636926 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A94E9134BF; Sat, 20 Apr 2024 02:52:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581563; cv=none; b=lD/fb2WOdAESk9wsHmIDL+JTc4n3E262KZz4vPa9r6jQvTKztdSjZ2za/XQ5G6ezIO/3gIryZpRQm6j0XC2KW6GxSW0kX2uWHZrpNReEKd7vo9c6aCInCWrN+jeqz80OH3zsp4ZexGM2cu4m21Yp2rursjX9Eu0C31d8ZMC/LRw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581563; c=relaxed/simple; bh=2aBKBmiU5u7RKO297YDu3WlUAOmbxnH+Jhv/GmAxX/Q=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=r2M1d2lfZmei54KNQfijqqEbk7CIKE38EnC84vDoLGy61/M31BA0x9pk5hHv9usSl0N3Bfacq07SgayrlvACUx+qPPDe4FXaKgdWbfCILJ0JaNcPXWmv3gIhKYo8OVNRbl94sWOV6MWcNSwtmCxvkVAcOCe/HIAFI0nUaMcC/kA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=lHwS0G5K; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="lHwS0G5K" Received: by smtp.kernel.org (Postfix) with ESMTPSA id D1895C4AF08; Sat, 20 Apr 2024 02:52:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581563; bh=2aBKBmiU5u7RKO297YDu3WlUAOmbxnH+Jhv/GmAxX/Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=lHwS0G5KDZDTn7VRSC6yknsjAdVszHLbHMXrgZBX77MuxdIPiUP5dcUy+F8zYPXVP yY74e/J7Ccov0G4XlUtn2cpz1bsjZPsSHtF3sEyLIF6RKFxSW3JCvNaf3/lHlmGuNf FHBKCKYUZupuPL1gor2zh6P0kkik21+xq6biojrC6vTvU8ZWji940Rkb7JuNiWHfa+ +IdDarxiWfVYRVsJ6Mn7U52OOcWiDHONQhBa5MS0uFKE9XA17lCc53bGjzwxNTUn2k xbNpTv/z1eMKe3MpQFp4YxxZROfjuO9xkCG390bSvs4DxK/05bGH8uLWtsBvLno19O WRszNYOFpjxGw== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 5/7] selftests: net: support matching cases by name prefix Date: Fri, 19 Apr 2024 19:52:35 -0700 Message-ID: <20240420025237.3309296-6-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 While writing tests with a lot more cases I got tired of having to jump back and forth to add the name of the test to the ksft_run() list. Most unittest frameworks do some name matching, e.g. assume that functions with names starting with test_ are test cases. Support similar flow in ksft_run(). Let the author list the desired prefixes. globals() need to be passed explicitly, IDK how to work around that. Signed-off-by: Jakub Kicinski --- v4: - spell the code out a little to make it clearer --- tools/testing/selftests/drivers/net/ping.py | 3 +-- tools/testing/selftests/net/lib/py/ksft.py | 13 ++++++++++++- 2 files changed, 13 insertions(+), 3 deletions(-) diff --git a/tools/testing/selftests/drivers/net/ping.py b/tools/testing/selftests/drivers/net/ping.py index e75908d7c558..9f65a0764aab 100755 --- a/tools/testing/selftests/drivers/net/ping.py +++ b/tools/testing/selftests/drivers/net/ping.py @@ -18,8 +18,7 @@ from lib.py import cmd def main() -> None: with NetDrvEpEnv(__file__) as cfg: - ksft_run([test_v4, test_v6], - args=(cfg, )) + ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, )) ksft_exit() diff --git a/tools/testing/selftests/net/lib/py/ksft.py b/tools/testing/selftests/net/lib/py/ksft.py index e7f79f6185b0..f84e9fdd0032 100644 --- a/tools/testing/selftests/net/lib/py/ksft.py +++ b/tools/testing/selftests/net/lib/py/ksft.py @@ -99,7 +99,18 @@ KSFT_RESULT_ALL = True print(res) -def ksft_run(cases, args=()): +def ksft_run(cases=None, globs=None, case_pfx=None, args=()): + cases = cases or [] + + if globs and case_pfx: + for key, value in globs.items(): + if not callable(value): + continue + for prefix in case_pfx: + if key.startswith(prefix): + cases.append(value) + break + totals = {"pass": 0, "fail": 0, "skip": 0, "xfail": 0} print("KTAP version 1") From patchwork Sat Apr 20 02:52:36 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636927 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 4E6841426E; Sat, 20 Apr 2024 02:52:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581564; cv=none; b=rZZ2ayGq2HkmUQS2FmTa+b6J64gUdt8DTAcJwoDY8zsnLaf76dPTNsrDR+Wx/Kco+xvqEWtcYLNQid/ZsqWCPgJR+0IV8UJtnWnn94mnD9BQBj7eIZOU4GbCQr6gBzktx0NXXqIDZKzjh/LUaV5ANcp1+FsbgOkHzWZYCxZVuZU= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581564; c=relaxed/simple; bh=SFq2qn8W6z/9AHmC2T4sUixcO6gC82gBDSfp9sejXE0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=A65oBeWryAo7UnjPJIk5QMBUdZKbEwUN01sPzOtFCuj0TYq4G3eR5DMx8WGG9c+rN7G80HAOS7iZJUFFonFEO7KVYb4KGB9mtpBhYiyTDBzHBxsLSddOR2ptQ4srYjJQFWTw+ntZurp8Y4x63mfJTIlJN+FSxd/93WpmdwrmfVo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YavDvFLG; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YavDvFLG" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B0F0C072AA; Sat, 20 Apr 2024 02:52:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581563; bh=SFq2qn8W6z/9AHmC2T4sUixcO6gC82gBDSfp9sejXE0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YavDvFLG+UlQi74UOwJA43tnyhVqdOP7GErGLKNz+JHa76kfxz6aSfR5Vavwr8/72 0Q5k6I/r6JXOBwHvDFhRHfXXXsQ7yzSCoRyxphV296iOxL5FCE4bVls066urWID2VW jwGuukcFuUM9T4ayIjmcvFVcoJMWBrsC3ggiFgmp5UO5XNQ09b+8SA1Ncxw/ysmhsU PR4DLKzCngnD9/BSK9PZr0ptvQ64NN9Gzpkmnxf6zpIupZjA7sc9wAUEeBY1TpnoN3 XxdOAuos+9ansT7Gu5w3Ga8iFJjKJKP3gvq08Y44+Pm8vz0vRjf5v+lb0NT4STUKus +wawAxr/29iig== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 6/7] selftests: drv-net: add a TCP ping test case (and useful helpers) Date: Fri, 19 Apr 2024 19:52:36 -0700 Message-ID: <20240420025237.3309296-7-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 More complex tests often have to spawn a background process, like a server which will respond to requests or tcpdump. Add support for creating such processes using the with keyword: with bkg("my-daemon", ..): # my-daemon is alive in this block My initial thought was to add this support to cmd() directly but it runs the command in the constructor, so by the time we __enter__ it's too late to make sure we used "background=True". Second useful helper transplanted from net_helper.sh is wait_port_listen(). The test itself uses socat, which insists on v6 addresses being wrapped in [], it's not the only command which requires this format, so add the wrapped address to env. The hope is to save test code from checking if address is v6. Signed-off-by: Jakub Kicinski --- .../selftests/drivers/net/lib/py/env.py | 5 +++ tools/testing/selftests/drivers/net/ping.py | 21 ++++++++- tools/testing/selftests/net/lib/py/utils.py | 43 +++++++++++++++++++ 3 files changed, 68 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index 579c5b34e6fd..dd5cb0226a31 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -110,6 +110,11 @@ from .remote import Remote self.addr = self.v6 if self.v6 else self.v4 self.remote_addr = self.remote_v6 if self.remote_v6 else self.remote_v4 + self.addr_ipver = "6" if self.v6 else "4" + # Bracketed addresses, some commands need IPv6 to be inside [] + self.baddr = f"[{self.v6}]" if self.v6 else self.v4 + self.remote_baddr = f"[{self.remote_v6}]" if self.remote_v6 else self.remote_v4 + self.ifname = self.dev['ifname'] self.ifindex = self.dev['ifindex'] diff --git a/tools/testing/selftests/drivers/net/ping.py b/tools/testing/selftests/drivers/net/ping.py index 9f65a0764aab..4b49de59231c 100755 --- a/tools/testing/selftests/drivers/net/ping.py +++ b/tools/testing/selftests/drivers/net/ping.py @@ -2,8 +2,9 @@ # SPDX-License-Identifier: GPL-2.0 from lib.py import ksft_run, ksft_exit +from lib.py import ksft_eq from lib.py import NetDrvEpEnv -from lib.py import cmd +from lib.py import bkg, cmd, wait_port_listen, rand_port def test_v4(cfg) -> None: @@ -16,6 +17,24 @@ from lib.py import cmd cmd(f"ping -c 1 -W0.5 {cfg.v6}", host=cfg.remote) +def test_tcp(cfg) -> None: + port = rand_port() + listen_cmd = f"socat -{cfg.addr_ipver} -t 2 -u TCP-LISTEN:{port},reuseport STDOUT" + + with bkg(listen_cmd, exit_wait=True) as nc: + wait_port_listen(port) + + cmd(f"echo ping | socat -t 2 -u STDIN TCP:{cfg.baddr}:{port}", + shell=True, host=cfg.remote) + ksft_eq(nc.stdout.strip(), "ping") + + with bkg(listen_cmd, host=cfg.remote, exit_wait=True) as nc: + wait_port_listen(port, host=cfg.remote) + + cmd(f"echo ping | socat -t 2 -u STDIN TCP:{cfg.remote_baddr}:{port}", shell=True) + ksft_eq(nc.stdout.strip(), "ping") + + def main() -> None: with NetDrvEpEnv(__file__) as cfg: ksft_run(globs=globals(), case_pfx={"test_"}, args=(cfg, )) diff --git a/tools/testing/selftests/net/lib/py/utils.py b/tools/testing/selftests/net/lib/py/utils.py index 7347d0c0ff05..d3715e6c21f2 100644 --- a/tools/testing/selftests/net/lib/py/utils.py +++ b/tools/testing/selftests/net/lib/py/utils.py @@ -1,7 +1,11 @@ # SPDX-License-Identifier: GPL-2.0 import json as _json +import random +import re import subprocess +import time + class cmd: def __init__(self, comm, shell=True, fail=True, ns=None, background=False, host=None): @@ -38,6 +42,20 @@ import subprocess (self.proc.args, stdout, stderr)) +class bkg(cmd): + def __init__(self, comm, shell=True, fail=True, ns=None, host=None, + exit_wait=False): + super().__init__(comm, background=True, + shell=shell, fail=fail, ns=ns, host=host) + self.terminate = not exit_wait + + def __enter__(self): + return self + + def __exit__(self, ex_type, ex_value, ex_tb): + return self.process(terminate=self.terminate) + + def ip(args, json=None, ns=None, host=None): cmd_str = "ip " if json: @@ -47,3 +65,28 @@ import subprocess if json: return _json.loads(cmd_obj.stdout) return cmd_obj + + +def rand_port(): + """ + Get unprivileged port, for now just random, one day we may decide to check if used. + """ + return random.randint(1024, 65535) + + +def wait_port_listen(port, proto="tcp", ns=None, host=None, sleep=0.005, deadline=5): + end = time.monotonic() + deadline + + pattern = f":{port:04X} .* " + if proto == "tcp": # for tcp protocol additionally check the socket state + pattern += "0A" + pattern = re.compile(pattern) + + while True: + data = cmd(f'cat /proc/net/{proto}*', ns=ns, host=host, shell=True).stdout + for row in data.split("\n"): + if pattern.search(row): + return + if time.monotonic() > end: + raise Exception("Waiting for port listen timed out") + time.sleep(sleep) From patchwork Sat Apr 20 02:52:37 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jakub Kicinski X-Patchwork-Id: 13636928 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 897E61401B; Sat, 20 Apr 2024 02:52:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581564; cv=none; b=Moh6TqDTvW8tFicjszu9ca+fPGNODULBMcQu+wVmEWJzD6IEVu1Qx9UyuJjbHOAx96KR7Z7vXI8b05Fpc1m5huXz/7ko0qDoPkZlGg4t9SmrV/NeQ+HEiLaSSGtB5CC0v7oco0VPieiUI4/Ggj9cXh71LAGB2fnGI1qmg3O6Liw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713581564; c=relaxed/simple; bh=5dhhMZJI18dkOS2vc7qce9DAK/+xJhsZ05bSHcLB3Hw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=LqOFygcLsXUHRuQC0hcdKsSdkdyXGk70HVUG6CGrtl49TJDD/1JtG/sh1LEtbHsBfCEmkfF34lgF+jRoH7fjtelBJSGDkU8LsDfm5ehIP5z2guy0YgOgmdzFkXFjcZ03+qHKvn4sgz2T4IVNL7XCAZQUV7O/B4YUz5iYTdxLRXI= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Lrh9apGN; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Lrh9apGN" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 086FCC32782; Sat, 20 Apr 2024 02:52:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713581564; bh=5dhhMZJI18dkOS2vc7qce9DAK/+xJhsZ05bSHcLB3Hw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Lrh9apGNImbShnfa3swAuoWv6be4myOxlkcYXh8dCMpIKKPDEjSgEMRbeHa3D8tmD 3ttn2t/vsp9REQx1Gu5AJxAnjBGuNxLnjDPJBgnnAy4wBhX9TICmq6Tp0T4Gyj4efK fKtA5cyhvdHzRch3QX4ChlA8lYYRj53d61pTZkcyZ2Lpt63443eDz2L1y28oH5bP5h wKyWt9+dtMqNKU/B/jwM9nZyFokteCzHcAzxNLoYhbDF18QH/nSMQ8Ma9a4OlDm2fA D7F7rzDeQA9vTsVdcFnjRTPfLRD2FYT/X62S8jYrM4sPqeyxb9tzstBotB6khEVra7 iIbr1INDuYCew== From: Jakub Kicinski To: davem@davemloft.net Cc: netdev@vger.kernel.org, edumazet@google.com, pabeni@redhat.com, shuah@kernel.org, petrm@nvidia.com, linux-kselftest@vger.kernel.org, willemdebruijn.kernel@gmail.com, Jakub Kicinski Subject: [PATCH net-next v5 7/7] selftests: drv-net: add require_XYZ() helpers for validating env Date: Fri, 19 Apr 2024 19:52:37 -0700 Message-ID: <20240420025237.3309296-8-kuba@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240420025237.3309296-1-kuba@kernel.org> References: <20240420025237.3309296-1-kuba@kernel.org> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Wrap typical checks like whether given command used by the test is available in helpers. Signed-off-by: Jakub Kicinski --- .../selftests/drivers/net/lib/py/env.py | 29 ++++++++++++++++++- tools/testing/selftests/drivers/net/ping.py | 6 ++++ 2 files changed, 34 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/lib/py/env.py b/tools/testing/selftests/drivers/net/lib/py/env.py index dd5cb0226a31..a3db1bb1afeb 100644 --- a/tools/testing/selftests/drivers/net/lib/py/env.py +++ b/tools/testing/selftests/drivers/net/lib/py/env.py @@ -3,7 +3,8 @@ import os import shlex from pathlib import Path -from lib.py import ip +from lib.py import KsftSkipEx +from lib.py import cmd, ip from lib.py import NetNS, NetdevSimDev from .remote import Remote @@ -118,6 +119,8 @@ from .remote import Remote self.ifname = self.dev['ifname'] self.ifindex = self.dev['ifindex'] + self._required_cmd = {} + def create_local(self): self._netns = NetNS() self._ns = NetdevSimDev() @@ -160,3 +163,27 @@ from .remote import Remote if self.remote: del self.remote self.remote = None + + def require_v4(self): + if not self.v4 or not self.remote_v4: + raise KsftSkipEx("Test requires IPv4 connectivity") + + def require_v6(self): + if not self.v6 or not self.remote_v6: + raise KsftSkipEx("Test requires IPv6 connectivity") + + def _require_cmd(self, comm, key, host=None): + cached = self._required_cmd.get(comm, {}) + if cached.get(key) is None: + cached[key] = cmd("command -v -- " + comm, fail=False, + shell=True, host=host).ret == 0 + self._required_cmd[comm] = cached + return cached[key] + + def require_cmd(self, comm, local=True, remote=False): + if local: + if not self._require_cmd(comm, "local"): + raise KsftSkipEx("Test requires command: " + comm) + if remote: + if not self._require_cmd(comm, "remote"): + raise KsftSkipEx("Test requires (remote) command: " + comm) diff --git a/tools/testing/selftests/drivers/net/ping.py b/tools/testing/selftests/drivers/net/ping.py index 4b49de59231c..eb83e7b48797 100755 --- a/tools/testing/selftests/drivers/net/ping.py +++ b/tools/testing/selftests/drivers/net/ping.py @@ -8,16 +8,22 @@ from lib.py import bkg, cmd, wait_port_listen, rand_port def test_v4(cfg) -> None: + cfg.require_v4() + cmd(f"ping -c 1 -W0.5 {cfg.remote_v4}") cmd(f"ping -c 1 -W0.5 {cfg.v4}", host=cfg.remote) def test_v6(cfg) -> None: + cfg.require_v6() + cmd(f"ping -c 1 -W0.5 {cfg.remote_v6}") cmd(f"ping -c 1 -W0.5 {cfg.v6}", host=cfg.remote) def test_tcp(cfg) -> None: + cfg.require_cmd("socat", remote=True) + port = rand_port() listen_cmd = f"socat -{cfg.addr_ipver} -t 2 -u TCP-LISTEN:{port},reuseport STDOUT"