From patchwork Fri Aug 2 00:03:07 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 13750937 X-Patchwork-Delegate: kuba@kernel.org Received: from mail-pf1-f176.google.com (mail-pf1-f176.google.com [209.85.210.176]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 961FC17FE; Fri, 2 Aug 2024 00:03:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722556993; cv=none; b=rvGtXzGbhsMBz4oBmAGC4KCSexpg7Hxs4epOfCHGl5X9VgZLrsNhK4Bzz+jTVyVQVt/4KWxrmLCHyAJfbuRX6Fi0AP3CqgqQl3qvRisKkvFJWHmPDa51WipaQv3GuynPoORfGLxY8cyvhK7km2ROWY0Cv8OrnaTNrL0TTBjCMUM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722556993; c=relaxed/simple; bh=3qQU1VgjbNk7XLc0TFKS0yeKm8lp0WuhwZgPjg6zWdI=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=iBXv+f+nbJ795/+J9sGqJTT0h7bSJ/NcT+A2C2/d5qrKrwZvLOW8jY0sp493aked7gmb406pGQGUE60HGtN/Vb4oNkwstnmzYI+ROR2owxSJdS9eNd0RHH2cdp/KNFWQ+flwPi8z3jgVZ/9uo14BvcVEmInjnPwyMPGCYOpRv78= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fomichev.me; spf=pass smtp.mailfrom=gmail.com; arc=none smtp.client-ip=209.85.210.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=fomichev.me Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Received: by mail-pf1-f176.google.com with SMTP id d2e1a72fcca58-710439ad77dso2796554b3a.2; Thu, 01 Aug 2024 17:03:11 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722556990; x=1723161790; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=vmKA0jXkGsl8kspNfQ7BmOezp0qmpOf0Ot67lZV8ipU=; b=dN9CWzEOYoYIXinvkefzmaiminQ1yUol2R8twFhuSZGHx0LJx9I6XKHtxLh77eF9da 1Vw2cdZgLL2JfSV7QnfsAV9bkLCdD4BjXbRhvANyqaz1XKuz4xd4d7mqiG1GTE2BYEJu 6QhXV5L9lpXBu6BBhBum7LBMYYNV0HiFYOYhISprUuomup7COz718P7zZ75Bo5kLuKD7 UNmtGD8UeP/UFRQDUv5K26qHfFCXF+GkKd0cTJaCDbaDfpRgSWe4Bw8HhcL+3ehearzO fmD7a+lzEy1rYymF6XesF8kvDlSskgCGWhFUKaFIH78H4CfDsKqEawN0jUusxZ4G5C3N QW3g== X-Forwarded-Encrypted: i=1; AJvYcCVxhSmeu5oTwtd070PDcMbX06BMs8KKppn2OS3vqmSV42wx0HZoUX4xWOUkB7hm3ej3LirAwed+97yGKGbZs4ZijFe5csFTlWx3cWpFcHwy X-Gm-Message-State: AOJu0YxvyyrRCziFQsx6XUZ1411ctA+LE6YGhfRHflgjv33IORGpj9Lb FjpppnUbLBk9F7XOEsFa93E7ZbL0jFRLCJKez4KzFxp5yXty+5eyuikv5Qc= X-Google-Smtp-Source: AGHT+IGVgXT/hjWZy2PwLKF61YM2KQZlF8k8gY5DTXE8q3zUsdMARtlg1KfLz2NL1J6jp2VaEcqGcg== X-Received: by 2002:a05:6a00:13aa:b0:70d:2b1b:a37f with SMTP id d2e1a72fcca58-7106d02f8c6mr2206305b3a.24.1722556990440; Thu, 01 Aug 2024 17:03:10 -0700 (PDT) Received: from localhost ([2601:646:9e00:f56e:73b6:7410:eb24:cba4]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-7106ec00e66sm372073b3a.37.2024.08.01.17.03.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Aug 2024 17:03:10 -0700 (PDT) From: Stanislav Fomichev To: netdev@vger.kernel.org Cc: davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, Shuah Khan , Joe Damato , Petr Machata , linux-kselftest@vger.kernel.org Subject: [PATCH net-next v3 1/3] selftests: net-drv: exercise queue stats when the device is down Date: Thu, 1 Aug 2024 17:03:07 -0700 Message-ID: <20240802000309.2368-1-sdf@fomichev.me> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org Verify that total device stats don't decrease after it has been turned down. Also make sure the device doesn't crash when we access per-queue stats when it's down (in case it tries to access some pointers that are NULL). KTAP version 1 1..5 ok 1 stats.check_pause ok 2 stats.check_fec ok 3 stats.pkt_byte_sum ok 4 stats.qstat_by_ifindex ok 5 stats.check_down # Totals: pass:5 fail:0 xfail:0 xpass:0 skip:0 error:0 v3: - use errno.EOPNOTSUPP (Petr) - move qstat[0] under try (Petr) v2: - KTAP output formatting (Jakub) - defer instead of try/finally (Jakub) - disappearing stats is an error (Jakub) - ksft_ge instead of open coding (Jakub) Signed-off-by: Stanislav Fomichev --- Cc: Shuah Khan Cc: Joe Damato Cc: Petr Machata Cc: linux-kselftest@vger.kernel.org --- tools/testing/selftests/drivers/net/stats.py | 25 +++++++++++++++++++- 1 file changed, 24 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/stats.py b/tools/testing/selftests/drivers/net/stats.py index 820b8e0a22c6..2fdde8cf0307 100755 --- a/tools/testing/selftests/drivers/net/stats.py +++ b/tools/testing/selftests/drivers/net/stats.py @@ -1,10 +1,12 @@ #!/usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 +import errno from lib.py import ksft_run, ksft_exit, ksft_pr from lib.py import ksft_ge, ksft_eq, ksft_in, ksft_true, ksft_raises, KsftSkipEx, KsftXfailEx from lib.py import EthtoolFamily, NetdevFamily, RtnlFamily, NlError from lib.py import NetDrvEnv +from lib.py import ip, defer ethnl = EthtoolFamily() netfam = NetdevFamily() @@ -133,9 +135,30 @@ rtnl = RtnlFamily() ksft_eq(cm.exception.nl_msg.extack['bad-attr'], '.ifindex') +def check_down(cfg) -> None: + try: + qstat = netfam.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + except NlError as e: + if e.error == errno.EOPNOTSUPP: + raise KsftSkipEx("qstats not supported by the device") + raise + + ip(f"link set dev {cfg.dev['ifname']} down") + defer(ip, f"link set dev {cfg.dev['ifname']} up") + + qstat2 = netfam.qstats_get({"ifindex": cfg.ifindex}, dump=True)[0] + for k, v in qstat.items(): + ksft_ge(qstat2[k], qstat[k], comment=f"{k} went backwards on device down") + + # exercise per-queue API to make sure that "device down" state + # is handled correctly and doesn't crash + netfam.qstats_get({"ifindex": cfg.ifindex, "scope": "queue"}, dump=True) + + def main() -> None: with NetDrvEnv(__file__) as cfg: - ksft_run([check_pause, check_fec, pkt_byte_sum, qstat_by_ifindex], + ksft_run([check_pause, check_fec, pkt_byte_sum, qstat_by_ifindex, + check_down], args=(cfg, )) ksft_exit()