Re: [PATCH] igb: add a method to get the nic hw time stampingpolicy

[Dong Zhu]

On Sat, May 11, 2013 at 05:31:43PM +0200, Richard Cochran wrote:
> On Sat, May 11, 2013 at 10:02:19PM +0800, Dong Zhu wrote:
> > 
> > Currently kernel only support setting the hw time stamping policy
> > through ioctl,now add a method to check which packets(Outgoing and
> > Incoming) are time stamped by nic.
> 
> I don't really see a use case here. Applications needing time stamping
> should just set the policy that they need.

I think it is necessary to check which type of packets are stamped
by nic.

For I350 (igb), it only support HWTSTAMP_FILTER_NONE and
HWTSTAMP_FILTER_ALL of outgoing packets.For 82599EB(ixgbe), we can 
check more.

I add a new member of hwtstamp_config to judge the ioctl request is read
or write, we can specify the rw in the userspace using hwstamp_ctl
application to get the time stamped info.


-- 
Best Regards,
Dong Zhu
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/