This is because the network driver does not correctly implement software
timestamping.
Regards,
Jake
On Sun, 2015-01-11 at 22:45 +0000, Sebastien wrote:
> Hello,
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> I've got a new HP server, with Esxi E1000, with a NIC Broadcom NetXtreme
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> BCM 57810, and VM hosting RHEL6.5
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> I would like it to use the Soft option to synchronize from PTP source,
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> connected on Eth1.
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> I've installed linuxptp, and updated the NIC driver for the RHEL 6.5
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> Unfortunately, the software-transmit (SOF_TIMESTAMPING_TX_SOFTWARE)
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> is not reported after the command ethtool -T eth1
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> And , using ptp4l -i eth1 -m -S shows ;
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> [root]# ptp4l -i eth1 -m -S
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>
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> interface 'eth1' does not support requested timestamping mode.
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> [root]# ethtool -T eth1
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> Time stamping parameters for eth1:
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>
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> Capabilities:
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>
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> software-receive (SOF_TIMESTAMPING_RX_SOFTWARE)
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>
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> software-system-clock (SOF_TIMESTAMPING_SOFTWARE)
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>
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> PTP Hardware Clock: none
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> Hardware Transmit Timestamp Modes: none
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> Hardware Receive Filter Modes: none
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> Is it because of a NIC card compatibility or an ESXI compatibility?
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>
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> Is there some description, recommendation of Linux and Hardware version to
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> support linuxptp?
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> Thanks for your help
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> Regards
>
>
>
> Sebastien
>
>
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