Re: [Linuxptp-users] Issues with linuxptp and Intel 82574

[Fabrizio G. <Fab...@ri...>]

No that's what I find odd...
On another machine I have the exact same kernel but I installed an Intel 82576.
Here's what ethtool -T returns:

ethtool -T eth0
Time stamping parameters for eth0:
Capabilities:
        hardware-transmit     (SOF_TIMESTAMPING_TX_HARDWARE)
        hardware-receive      (SOF_TIMESTAMPING_RX_HARDWARE)
        hardware-raw-clock    (SOF_TIMESTAMPING_RAW_HARDWARE)
PTP Hardware Clock: 0
Hardware Transmit Timestamp Modes:
        off                   (HWTSTAMP_TX_OFF)
        on                    (HWTSTAMP_TX_ON)
Hardware Receive Filter Modes:
        none                  (HWTSTAMP_FILTER_NONE)
        ptpv1-l4-sync         (HWTSTAMP_FILTER_PTP_V1_L4_SYNC)
        ptpv1-l4-delay-req    (HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ)
        ptpv2-l4-sync         (HWTSTAMP_FILTER_PTP_V2_L4_SYNC)
        ptpv2-l4-delay-req    (HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ)
        ptpv2-l2-sync         (HWTSTAMP_FILTER_PTP_V2_L2_SYNC)
        ptpv2-l2-delay-req    (HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ)
        ptpv2-event           (HWTSTAMP_FILTER_PTP_V2_EVENT)

And it actually works with HW timestamps. If it works with another NIC and the same kernel I expect that with the proper driver it should work also with a 82574.
Or am I wrong?

Fabrizio


-----Original Message-----
From: Richard Cochran [mailto:ric...@gm...] 
Sent: Monday, October 21, 2013 10:30
To: Fabrizio Giordano
Cc: Vick, Matthew; Ledda William EXT; lin...@li...
Subject: Re: [Linuxptp-users] Issues with linuxptp and Intel 82574

On Mon, Oct 21, 2013 at 05:12:49PM +0000, Fabrizio Giordano wrote:
> Then why it works just fine with an Intel 82576 (and the *same* kernel)?

I assume you mean SW time stamping works?

Thanks,
Richard