From patchwork Tue Jul 30 22:39:31 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stanislav Fomichev X-Patchwork-Id: 815480 Received: from mail-il1-f173.google.com (mail-il1-f173.google.com [209.85.166.173]) (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 A40CE18DF9D; Tue, 30 Jul 2024 22:39:34 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.173 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722379176; cv=none; b=EVXLogLzIfTEvQtZHi3EoOqiRh/LfMe2nUGwoFrnI8MOMdFo+IbSOUlwo+qIzptvvLJs7P6AuB3mv9fj+0+iL3zkls/FIsQj/1wHZJUDJImgYxr/L2n/UtUf3pVJWdlS5cXb0XHu5xQlHMZtcci+c2ox+Sp17qKiK00g1ufPPmw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722379176; c=relaxed/simple; bh=vOIVhjatM4IfJSq1e4V0IbA96qyphn0Bgq0/WUrKY2Y=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=psTyc8oojDDDG0Lr14klaAgeto9NIK/ekGFehBboFERcVm6G/klxMtlEm00tgSJTNAvGZ/guLsTWNyljy661SKBbBD0PjvSf+1ANiHD8k2YEuVKa8efJOzsIzExxKpLQx/QEj52i6Ne8Fy+RS5m39i+HjOFtInJeDY87nLRkGuo= 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=209.85.166.173 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-il1-f173.google.com with SMTP id e9e14a558f8ab-397052a7b63so22429335ab.1; Tue, 30 Jul 2024 15:39:34 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1722379173; x=1722983973; 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=T20/potiJ817xYau9AKmhVJz5e/mlBDHwVmIwp++kkY=; b=hJZ7vkR3VxSVMcP/Dc8NUkpzK9Zbl1yWKhOonIUCxfEsjvHJt5YkcnR5ar6FaxkKrd Z+LmL0LKYvE3cewxxKH4emy0HqxVlxqWqvpd3ywdWrt1ZbLKxjE7v1jBJkFyiUr3BgSw 9xBfJd7bsrG8JVySiQ3dIoqhcxLQ5nSrNQv1k6aXSkz/nFv4E+LRGC2obKzuNAIKZlZM oiG/LVrvOrJ7hVwma6qUK01KiRGCiwYPZJuwk22s9kARpAni3NmhyCo0T7hILWdvkcIR jsG5uFd+W9tgKmEcDQ3C+aRZ80xNmwYyeELKYIPkLPwaeMEqVDZ/YRnow0V6IsStrX9Q /XPw== X-Forwarded-Encrypted: i=1; AJvYcCXAGIJBvyf80B92C/OR1dFuO3A8ITxqL4dL9PCULKYuTi7OO+8jmlI2H9wUVJV6kAUY7dz6fD52FJ21OulxuVueVRd1JQ+DLm0OgOgOeXso X-Gm-Message-State: AOJu0YydlHy7KrTpEVam2wFKqkszuqBSho2VXaYxy0xVe0e/VQx/zZJQ VYmeCg/TlS0pwyPhcZ7LNdEZhOWSjAgotRJZKJNqTfs7YBFo89mav5niUl8= X-Google-Smtp-Source: AGHT+IG6uQ9oZ2I4ac8OfiMVTLbvyYWCFEV0JTQoOJsdmmdCtVZCR98yp1JFa7/BujIdZoHEES1+8g== X-Received: by 2002:a05:6e02:178d:b0:384:32f4:9e92 with SMTP id e9e14a558f8ab-39aec41a2cfmr167897945ab.26.1722379173419; Tue, 30 Jul 2024 15:39:33 -0700 (PDT) Received: from localhost ([2601:646:9e00:f56e:73b6:7410:eb24:cba4]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-7a9f9fbd4b0sm8081299a12.72.2024.07.30.15.39.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jul 2024 15:39:33 -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 v2 1/2] selftests: net-drv: exercise queue stats when the device is down Date: Tue, 30 Jul 2024 15:39:31 -0700 Message-ID: <20240730223932.3432862-1-sdf@fomichev.me> X-Mailer: git-send-email 2.45.2 Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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 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..93f9204f51c4 100755 --- a/tools/testing/selftests/drivers/net/stats.py +++ b/tools/testing/selftests/drivers/net/stats.py @@ -5,6 +5,7 @@ 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 +134,31 @@ 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) + except NlError as e: + if e.error == 95: + 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") + + qstat = qstat[0] + 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()