From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 5A675471D03; Tue, 15 Sep 2026 18:21:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789496516; cv=none; b=fIrXxQl4hUny52SCIvwNHcIksoi08LDrGDJtuYyt0LuAh3GFpKSbGiSzmXsx6QKvsDobu2am11D1IgbNFxziH6g0Bohq+Z6D5E9/5rVsU3XzTmQsrsJO2vkEwtoji7pDEi+2s1kANrUxU9I7oWQ3sCLDEpA1Y7SasEQ7M7DVG6U= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789496516; c=relaxed/simple; bh=9iV88Hl9O7LZDaM2gd46D7VetLz73zwNBDxyESd2SV4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=hZfVzv04sjCAsPVV98dhvMY2eU4ETnWova0IPBA9s0pDnhL2RYGIlas/WHSOYeAQkK1eZc2aM7pzi31gyeucT3+kbnH9+cSD62tbbnG67juLCU1t4z+r36GNR7TvojABy6AYCT6c7/yf/o+Q1rbpSJb5eIkBkBqlZuDHishjYZs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=fA77h469; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="fA77h469" Received: by smtp.kernel.org (Postfix) with ESMTPSA id DA41B1F00893; Tue, 15 Sep 2026 18:21:48 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789496515; bh=jH9B+CxuBDilzrb+Dtnbx6ywilSHSOCZqVIvDjj7Szo=; h=From:To:Cc:Subject:Date:In-Reply-To:References; b=fA77h469KPZwygHT4FnigtSJJ1KSU8Hi74kDjJlUXvxukScVDG8LlZJWCUy7a8jlk 40EdEOlDenAkUGdWDr3dNJUIF+Ol9tVaXPjBoMIJfx542BC2avpVQJ6j6ECxllywfc +IYLZna5cxR/nxlm/iox3Vr63H7bpSsyGlIoGm/I2FL9z4oHzSq5ivAteUAiXKrspR UrRrlXqrALaLekl1uOljZerxSVuphLwxr8Hi+ptskQIEh+NsJXcPsE+JN30pnbO/5R W6JDd/6E13acfrPyq/64R/HPGh+N/WDTekOCtjpei6g1R5QWDydxYV9sMzAVatjbwg QEL9kJL1Javrw== From: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= To: Alexander Duyck , Jakub Kicinski , kernel-team@meta.com, Andrew Lunn , "David S. Miller" , Eric Dumazet , Paolo Abeni , Simon Horman , Shuah Khan , netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, Daniel Borkmann Cc: =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , "Mike Marciniszyn (Meta)" , Mohsin Bashir , Stanislav Fomichev , Bobby Eshleman , Dimitri Daskalakis , Weiming Shi , Maxime Chevallier , Jacob Keller , Breno Leitao , Tao Cui , Pavel Begunkov , David Wei Subject: [PATCH net-next v3 5/5] selftests: drv-net: Request larger zcrx buffers Date: Tue, 15 Sep 2026 20:21:03 +0200 Message-ID: <20260915182105.4162425-6-bjorn@kernel.org> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20260915182105.4162425-1-bjorn@kernel.org> References: <20260915182105.4162425-1-bjorn@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The large-chunk test always requests two base pages. On interfaces with a large MTU, that may not exceed two maximum-sized frames. Request a power-of-two buffer larger than twice the MTU. This makes the existing rx_buf_len check and data-integrity traffic exercise the larger layout. Signed-off-by: Björn Töpel --- tools/testing/selftests/drivers/net/hw/iou-zcrx.py | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/drivers/net/hw/iou-zcrx.py b/tools/testing/selftests/drivers/net/hw/iou-zcrx.py index c833535d8a03..5047fdb56005 100755 --- a/tools/testing/selftests/drivers/net/hw/iou-zcrx.py +++ b/tools/testing/selftests/drivers/net/hw/iou-zcrx.py @@ -221,9 +221,13 @@ def test_zcrx_large_chunks(cfg) -> None: single(cfg) page_size = resource.getpagesize() + mtu = cfg.dev["mtu"] nr_pages = 2 + while nr_pages * page_size <= 2 * mtu: + nr_pages *= 2 rx_buf_len = nr_pages * page_size - rx_cmd = f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} -q {cfg.target} -x {nr_pages}" + rx_cmd = (f"{cfg.bin_local} -s -p {cfg.port} -i {cfg.ifname} " + f"-q {cfg.target} -x {nr_pages}") tx_cmd = f"{cfg.bin_remote} -c -h {cfg.addr_v['6']} -p {cfg.port} -l 12840" probe = cmd(rx_cmd + " -d", fail=False) -- 2.55.0