From patchwork Mon Feb 3 19:10:50 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerhard Engleder X-Patchwork-Id: 13958108 Received: from mx23lb.world4you.com (mx23lb.world4you.com [81.19.149.133]) (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 7C897522A for ; Mon, 3 Feb 2025 20:14:17 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=81.19.149.133 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738613659; cv=none; b=fEnaFKmjk/VOaMfJeB+dG5MiHIb1pxRCpok9WEMjC+buTtMuWP8PN2A/vM7ZZQJXLTRWXY6y04QB67UYat539844TPyIUusGfwHo7YPTTvfzL/MrkfZTbXhlPTAF3HE+Q/izytItct+T9Eirhuz7EMB5V5/5Ju5PHLfs6fm9tVQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738613659; c=relaxed/simple; bh=bicH8DK/uOMHSnEzQNZjtPITXa0tVYs0SGxJP5vYX0A=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=cmeDtCPTh9ILqqbCzmr+nZuz8Oi7M0wHYt+UJNodPjVP0zCcBaihNk7sQCfE6efoCIsxb2O3tBnRxzniIMP8104DRLR4lW9VPL+YaJjIUkaJJ62LKryTcdzQr0H5aeC2JLpT3NzqIDxJe9WQoSZclarXgqAT376JBLf7c301jq4= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=engleder-embedded.com; spf=pass smtp.mailfrom=engleder-embedded.com; dkim=pass (1024-bit key) header.d=engleder-embedded.com header.i=@engleder-embedded.com header.b=gIoSLUEr; arc=none smtp.client-ip=81.19.149.133 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=engleder-embedded.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=engleder-embedded.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=engleder-embedded.com header.i=@engleder-embedded.com header.b="gIoSLUEr" DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=engleder-embedded.com; s=dkim11; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=sRpmcy7X5YV3eSIs5Apx3e6diTDSx5AwSq8ZZyeQB1c=; b=gIoSLUErTlWQCobA7E0mM3Mb/G i4/7B/VNVQWPQF8dhUf4DF/Enccb3GaOY01pI4mwXRLfC5nMc8bs2+tLGgA1rommEK7RpguKMA1/7 BpQJzSPK08oDfH5KDVTDVfMEQNSAeuwsWuez2GTj1UEkJus5PZOlkMRO1QdTfD86gfII=; Received: from [88.117.60.28] (helo=hornet.engleder.at) by mx23lb.world4you.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.97.1) (envelope-from ) id 1tf1qZ-000000004RY-47PV; Mon, 03 Feb 2025 20:11:04 +0100 From: Gerhard Engleder To: andrew@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com Cc: netdev@vger.kernel.org, Gerhard Engleder Subject: [PATCH net-next v4 0/7] Support loopback mode speed selection Date: Mon, 3 Feb 2025 20:10:50 +0100 Message-Id: <20250203191057.46351-1-gerhard@engleder-embedded.com> X-Mailer: git-send-email 2.39.5 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-AV-Do-Run: Yes X-ACL-Warn: X-W4Y-Internal X-Patchwork-Delegate: kuba@kernel.org Previously to commit 6ff3cddc365b ("net: phylib: do not disable autoneg for fixed speeds >= 1G") it was possible to select the speed of the loopback mode by configuring a fixed speed before enabling the loopback mode. Now autoneg is always enabled for >= 1G and a fixed speed of >= 1G requires successful autoneg. Thus, the speed of the loopback mode depends on the link partner for >= 1G. There is no technical reason to depend on the link partner for loopback mode. With this behavior the loopback mode is less useful for testing. Allow PHYs to support optional speed selection for the loopback mode. This support is implemented for the generic loopback support and for PHY drivers, which obviously support speed selection for loopback mode. Additionally, loopback support according to the data sheet is added to the KSZ9031 PHY. Extend phy_loopback() to signal link up and down if speed changes, because a new link speed requires link up signalling. Use this loopback speed selection in the tsnep driver to select the loopback mode speed depending the previously active speed. User space tests with 100 Mbps and 1 Gbps loopback are possible again. v4: - resend without changed to RFC v3 RFC v3: - align set_loopback() of Marvell to Micrel (Andrew Lunn) - transmit packets in loopback selftests (Andrew Lunn) - don't flush PHY statemachine in phy_loopback() - remove setting of carrier on and link mode after phy_loopback() in tsnep v2: - signal link up to keep MAC and PHY in sync about speed (Andrew Lunn) Gerhard Engleder (7): net: phy: Allow loopback speed selection for PHY drivers net: phy: Support speed selection for PHY loopback net: phy: micrel: Add loopback support net: phy: marvell: Align set_loopback() implementation tsnep: Select speed for loopback net: selftests: Export net_test_phy_loopback_* tsnep: Add PHY loopback selftests drivers/net/ethernet/engleder/Kconfig | 1 + drivers/net/ethernet/engleder/tsnep_main.c | 21 ++- .../net/ethernet/engleder/tsnep_selftests.c | 153 +++++++++++++++++- .../net/ethernet/hisilicon/hns/hns_ethtool.c | 4 +- .../hisilicon/hns3/hns3pf/hclge_main.c | 4 +- .../hisilicon/hns3/hns3pf/hclge_mdio.c | 2 +- .../stmicro/stmmac/stmmac_selftests.c | 8 +- drivers/net/phy/adin1100.c | 5 +- drivers/net/phy/dp83867.c | 5 +- drivers/net/phy/marvell.c | 68 ++++---- drivers/net/phy/micrel.c | 28 ++++ drivers/net/phy/mxl-gpy.c | 11 +- drivers/net/phy/phy-c45.c | 5 +- drivers/net/phy/phy.c | 76 +++++++++ drivers/net/phy/phy_device.c | 43 +---- drivers/net/phy/xilinx_gmii2rgmii.c | 7 +- include/linux/phy.h | 18 ++- include/net/selftests.h | 19 +++ net/core/selftests.c | 13 +- 19 files changed, 377 insertions(+), 114 deletions(-)