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There are several cases where virtual net devices may benefit from having a PTP clock, and these have to do with testing. I can see at least netdevsim and veth as potential users of a common mock-up PTP hardware clock driver. The proposed idea is to create an object which emulates PTP clock operations on top of the unadjustable CLOCK_MONOTONIC_RAW plus a software-controlled time domain via a timecounter/cyclecounter and then link that PHC to the netdevsim device. The driver is fully functional for its intended purpose, and it successfully passes the PTP selftests. $ cd tools/testing/selftests/ptp/ $ ./phc.sh /dev/ptp2 TEST: settime [ OK ] TEST: adjtime [ OK ] TEST: adjfreq [ OK ] Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Link: https://lore.kernel.org/r/20230807193324.4128292-7-vladimir.oltean@nxp.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
23 lines
922 B
Makefile
23 lines
922 B
Makefile
# SPDX-License-Identifier: GPL-2.0
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#
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# Makefile for PTP 1588 clock support.
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#
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ptp-y := ptp_clock.o ptp_chardev.o ptp_sysfs.o ptp_vclock.o
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ptp_kvm-$(CONFIG_X86) := ptp_kvm_x86.o ptp_kvm_common.o
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ptp_kvm-$(CONFIG_HAVE_ARM_SMCCC) := ptp_kvm_arm.o ptp_kvm_common.o
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obj-$(CONFIG_PTP_1588_CLOCK) += ptp.o
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obj-$(CONFIG_PTP_1588_CLOCK_DTE) += ptp_dte.o
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obj-$(CONFIG_PTP_1588_CLOCK_INES) += ptp_ines.o
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obj-$(CONFIG_PTP_1588_CLOCK_PCH) += ptp_pch.o
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obj-$(CONFIG_PTP_1588_CLOCK_KVM) += ptp_kvm.o
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obj-$(CONFIG_PTP_1588_CLOCK_QORIQ) += ptp-qoriq.o
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ptp-qoriq-y += ptp_qoriq.o
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ptp-qoriq-$(CONFIG_DEBUG_FS) += ptp_qoriq_debugfs.o
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obj-$(CONFIG_PTP_1588_CLOCK_IDTCM) += ptp_clockmatrix.o
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obj-$(CONFIG_PTP_1588_CLOCK_IDT82P33) += ptp_idt82p33.o
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obj-$(CONFIG_PTP_1588_CLOCK_MOCK) += ptp_mock.o
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obj-$(CONFIG_PTP_1588_CLOCK_VMW) += ptp_vmw.o
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obj-$(CONFIG_PTP_1588_CLOCK_OCP) += ptp_ocp.o
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obj-$(CONFIG_PTP_DFL_TOD) += ptp_dfl_tod.o
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