Re: [Linuxptp-users] rogue peer delay response caused by port_synchronize()

[merlinhe <mer...@gm...>]

Hi Miroslav,

We use Synopsys's IP, the driver is the same as stmmac

file: stmicro/stmmac/stmmac_main.c
function: static int stmmac_hwtstamp_set(struct net_device *dev, struct
ifreq *ifr)

 692     /* initialize system time */

* 693     ktime_get_real_ts64(&now);* 694
 695     /* lower 32 bits of tv_sec are safe until y2106 */

* 696     stmmac_init_systime(priv, priv->ptpaddr, 697
(u32)now.tv_sec, now.tv_nsec);*

Miroslav Lichvar <mli...@re...> 于2023年3月27日周一 16:20写道：

> On Fri, Mar 24, 2023 at 03:46:49PM +0800, merlinhe wrote:
> >
> port.port_initialize()->transport_open()->raw_open()->sk_timestamping_init()->hwts_init()->*ioctl(fd,
> > SIOCSHWTSTAMP)(eth driver set PHC to SYS(year 2000) in this ioctl)*
>
> That ioctl definitely shouldn't cause the PHC to be stepped. What
> HW/driver is it?
>
> --
> Miroslav Lichvar
>
>