Re: [Linuxptp-users] Is there any interface between ptp driver and linuxptp for controlling the ptp hardware?

[Richard C. <ric...@gm...>]

On Tue, Mar 13, 2012 at 04:27:54PM +0900, Takahiro Shimizu wrote:
> EG20T ieee1588 hardware needs destination MAC address to capture the ptp
> message.
> I implement it in ptp_pch_probe function now.
> The usage is like below:
> insmod ptp_pch.ko station="01:00:5e:00:01:81"
> This is good if the MAC address is unicast. Because it is known already.
> However it is NG if the MAC address is multicast. Because it is decided
> when the linuxptp is started.

Why do you need to set the station address?

According to the EG20T Datasheet (Intel 3242111-006US), the station
address fields are not used. In Table 617, page 523, "PTP Frame
Identification", the MAC addresses are not used at all.

Just leave the station address registers as zero.

> So, I want to add the new command between ptp driver and linuxptp.
> One possibility is to define the new ioctl of socket interface.
> However it needs to change gbe, ptp driver and linuxptp.
> Another possibility is to use the interface between ptp driver and linuxptp.
> It seems simple.
> However I can not see any direct interface between ptp driver and linuxptp.
> 
> Question:
> 1. Which is better to add the new command for ptp driver?
> 2. Is it possible to add new interface between ptp driver and linuxptp
> (e.g. ioctl)?
> 3. Does anyone have other better idea?

I don't see any need for such an interface.

Richard