From patchwork Sun Feb 9 19:08:20 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gerhard Engleder X-Patchwork-Id: 13967081 Received: from mx02lb.world4you.com (mx02lb.world4you.com [81.19.149.112]) (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 EF45570807 for ; Sun, 9 Feb 2025 19:20:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=81.19.149.112 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739128814; cv=none; b=PA5kPf9lv4XsTVrxhSfC+wGIG1W0FLPyOTC6nqPCYaDgZaDUT22bi6tlTu3u/cJBQgCc/U8DXudNRxwAz0Wl8olP6XEM8Cvb22/bJRfUUVPNwipBajGp+GTFUYQhaeOXezYUweboSRx5Pdv44dKCAr7otvkLRt22JaSdzEMm7Mg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1739128814; c=relaxed/simple; bh=YBAgOtx01RqAZQ8xOalw6CYiidRyobliz/2mma3HqPo=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=SJZXfr9RWQN6K0IHAUuriPN9inPcjGDfnelRyUi9PYBH1l2N8n5mdEi7e7052sCWpBIvUa4zf8cFTshnvk+mEqA5z/+cCSypTwIOSAo8H2MzLikkqEg6A4UHkxOO0aA50ZDe2SkwgYGx5nHequVA9ec84XEco7j2QOEpRp9UaDQ= 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=TrStwC52; arc=none smtp.client-ip=81.19.149.112 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="TrStwC52" 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=0T7dMZS8iI/+ZLccfsoRU9yTS4TF+pB3xys2o+XhnJ0=; b=TrStwC52fZlfqXUzC0NN6a0PMY vw7mPNDQ5t86dwnbGi+KvhNJphUupg/pcCCo4a0eIIB5oEeGnNuIs7sPMsLK0poS+0KcIhnGRZ4zp FDVbZ+qImK+l/7sj7pc3H/esgtCeBgpdpXIk5Qy6NY7innZ8+hyPmQMDzPVGYq2O0NII=; Received: from [88.117.60.28] (helo=hornet.engleder.at) by mx02lb.world4you.com with esmtpsa (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.97.1) (envelope-from ) id 1thCfO-000000007TS-2ES8; Sun, 09 Feb 2025 20:08:31 +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 v6 0/7] Support loopback mode speed selection Date: Sun, 9 Feb 2025 20:08:20 +0100 Message-Id: <20250209190827.29128-1-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. v6: - add return value documentation to phy_loopback() (Jakub Kicinski) v5: - use phy_write() instead of phy_modify() (Russel King) - add missing inline for export dummies (kernel test robot) 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 | 78 +++++++++ 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, 379 insertions(+), 114 deletions(-)