From patchwork Mon Feb 3 19:50:46 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= X-Patchwork-Id: 13958106 X-Patchwork-Delegate: kuba@kernel.org Received: from todd.t-8ch.de (todd.t-8ch.de [159.69.126.157]) (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 8A3F37081E; Mon, 3 Feb 2025 19:50:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=159.69.126.157 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738612262; cv=none; b=p7WOXo1DebEr7WYNgI1xOkNarT1qDUyDmggF83d2FdNTbPj5Y3Py5wT1zRHdUQUwWLI4geI/F7sMk6rF2ulHGfonKgdsQLtqvdXbpPDg4T5++x2g3/5wb/D4+ifYSsq3WiCAIhfFtAK1TpdhILQDB0dzmiHBrKnJ7n+q+qT9N6A= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738612262; c=relaxed/simple; bh=hp3kp06KNDlIfdhHyemJW+gaT7pV1t52585ZKC6oSJc=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:To:Cc; b=XuFQxGfx/44giEPum8gX3thG8rtVlXiKGHV3XLrpezzvrn5Qg+wt62dK4nHhYpSIsIe7nRaXViNp3K9+0ego9MbZGGqDx1oyHa5qKQb8S9johagcuqYVOWVbZTag9uI6zlgylTF1PuzyUUlhwEmSRAPomHfXvvjCdVAt5KgcC+A= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net; spf=pass smtp.mailfrom=weissschuh.net; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b=gRITsGv7; arc=none smtp.client-ip=159.69.126.157 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=weissschuh.net Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=weissschuh.net header.i=@weissschuh.net header.b="gRITsGv7" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=weissschuh.net; s=mail; t=1738612254; bh=hp3kp06KNDlIfdhHyemJW+gaT7pV1t52585ZKC6oSJc=; h=From:Date:Subject:To:Cc:From; b=gRITsGv7Z4uS4EaXFKusUSOMCI2J716Ij6lJ5HOJ/szNyDaihM7IPKOiTF5LEtlQr ASbIgHawhLFYQMufmtZG+YDhwYRbOUCM8/6zFBWhXeqxY3N1aSNaDEdgY5KQ+74M89 QMbsAAyos62TdncKO1QjQP2azNJaM8uaDBZoY0WQ= From: =?utf-8?q?Thomas_Wei=C3=9Fschuh?= Date: Mon, 03 Feb 2025 20:50:46 +0100 Subject: [PATCH net] ptp: Add mock device Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250203-ptp-mock-dev-v1-1-f84c56fd9e45@weissschuh.net> X-B4-Tracking: v=1; b=H4sIABUeoWcC/x3MTQqAIBBA4avErBswI/q5SrQQZ6ohMtGQQLp70 vJbvJchchCOMFUZAieJcrmCpq7A7sZtjELFoJXuVKM1+tvjedkDiROawVJLbU8jj1ASH3iV59/ N4PiG5X0/6O2/VWMAAAA= X-Change-ID: 20250122-ptp-mock-dev-a8cd3d37d9e9 To: Richard Cochran , Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni Cc: linux-kernel@vger.kernel.org, netdev@vger.kernel.org, =?utf-8?q?Thomas_W?= =?utf-8?q?ei=C3=9Fschuh?= X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1738612254; l=3096; i=linux@weissschuh.net; s=20221212; h=from:subject:message-id; bh=hp3kp06KNDlIfdhHyemJW+gaT7pV1t52585ZKC6oSJc=; b=3JBt5DetI2u4KUE5vSnBVYw61iiWTAk6HT3TrEC3soqGVYnt+yKu8MtR3nVEKYphRYjja4O6Z hQFtxypsFDCCqad2lPRAMt8Ezz0jm66bt/9jtopSItpDAsc/23jc854 X-Developer-Key: i=linux@weissschuh.net; a=ed25519; pk=KcycQgFPX2wGR5azS7RhpBqedglOZVgRPfdFSPB1LNw= X-Patchwork-Delegate: kuba@kernel.org While working on the PTP core or userspace components, a real PTP device is not always available. Introduce a tiny module which creates a mock PTP device. Signed-off-by: Thomas Weißschuh --- drivers/ptp/Kconfig | 10 ++++++++++ drivers/ptp/Makefile | 1 + drivers/ptp/ptp_mock_dev.c | 32 ++++++++++++++++++++++++++++++++ 3 files changed, 43 insertions(+) --- base-commit: 2014c95afecee3e76ca4a56956a936e23283f05b change-id: 20250122-ptp-mock-dev-a8cd3d37d9e9 Best regards, diff --git a/drivers/ptp/Kconfig b/drivers/ptp/Kconfig index 07bf7f9aae019ca26aa6d39a3c19b9dd0420f9bb..f0bbf0cbf13fb89c8cbf8934f6f2f0b81e622466 100644 --- a/drivers/ptp/Kconfig +++ b/drivers/ptp/Kconfig @@ -195,6 +195,16 @@ config PTP_1588_CLOCK_MOCK To compile this driver as a module, choose M here: the module will be called ptp_mock. +config PTP_1588_CLOCK_MOCK_DEV + tristate "Mock-up PTP clock device" + depends on PTP_1588_CLOCK_MOCK + help + Instantiante a dummy PTP clock device derived from the system + monotonic time. + + To compile this driver as a module, choose M here: the module + will be called ptp_mock_dev. + config PTP_1588_CLOCK_VMW tristate "VMware virtual PTP clock" depends on ACPI && HYPERVISOR_GUEST && X86 diff --git a/drivers/ptp/Makefile b/drivers/ptp/Makefile index 25f846fe48c9f0406a02c75d83027a0e6cfa10bf..216065f68e152963b35c55594ec1fd0b33db097a 100644 --- a/drivers/ptp/Makefile +++ b/drivers/ptp/Makefile @@ -19,6 +19,7 @@ obj-$(CONFIG_PTP_1588_CLOCK_IDTCM) += ptp_clockmatrix.o obj-$(CONFIG_PTP_1588_CLOCK_FC3W) += ptp_fc3.o obj-$(CONFIG_PTP_1588_CLOCK_IDT82P33) += ptp_idt82p33.o obj-$(CONFIG_PTP_1588_CLOCK_MOCK) += ptp_mock.o +obj-$(CONFIG_PTP_1588_CLOCK_MOCK_DEV) += ptp_mock_dev.o obj-$(CONFIG_PTP_1588_CLOCK_VMW) += ptp_vmw.o obj-$(CONFIG_PTP_1588_CLOCK_OCP) += ptp_ocp.o obj-$(CONFIG_PTP_DFL_TOD) += ptp_dfl_tod.o diff --git a/drivers/ptp/ptp_mock_dev.c b/drivers/ptp/ptp_mock_dev.c new file mode 100644 index 0000000000000000000000000000000000000000..3423e2f0c45a4082875c2e031883735388d27b64 --- /dev/null +++ b/drivers/ptp/ptp_mock_dev.c @@ -0,0 +1,32 @@ +// SPDX-License-Identifier: GPL-2.0-or-later +/* + * Copyright 2025 Thomas Weißschuh + * + * Mock-up PTP Hardware Clock device + * + * Create a PTP device which offers PTP time manipulation operations + * using a timecounter/cyclecounter on top of CLOCK_MONOTONIC_RAW. + */ + +#include +#include +#include + +static struct mock_phc *phc; + +static int __init ptp_mock_dev_init(void) +{ + phc = mock_phc_create(NULL); + return PTR_ERR_OR_ZERO(phc); +} +module_init(ptp_mock_dev_init); + +static void __exit ptp_mock_dev_exit(void) +{ + mock_phc_destroy(phc); +} +module_exit(ptp_mock_dev_exit); + +MODULE_DESCRIPTION("Mock-up PTP Hardware Clock device"); +MODULE_AUTHOR("Thomas Weißschuh "); +MODULE_LICENSE("GPL");