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