Re: [dpdk-dev] How to set timestamp in 82599 NICs in DPDK?

[Keunhong Lee <dlrmsghd@gmail.com>]

82599 supports hw timestamping for PTP packets.
I don't know whether it supports timestamping for general packets.


http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L640
says that

640 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L640>*
        default:
*641 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L641>*
                /**642
<http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L642>*
                 * register RXMTRL must be set in order to do V1
packets,*643 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L643>*
                 * therefore it is not possible to time stamp both V1
Sync and*644 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L644>
*                 * Delay_Req messages and hardware does not support**
645 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L645>
                 * timestamping all packets => return error
*646 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L646>*
                 */*647
<http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L647>
                config
<http://lxr.free-electrons.com/ident?i=config>*->rx_filter =
HWTSTAMP_FILTER_NONE;
*648 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L648>*
                return -*ERANGE
<http://lxr.free-electrons.com/ident?i=ERANGE>*;
*649 <http://lxr.free-electrons.com/source/drivers/net/ethernet/intel/ixgbe/ixgbe_ptp.c#L649>*
        }*


Keunhong.

2015-06-01 11:38 GMT+09:00 科来 谭春海 <chunhai.tan@colasoft.com.cn>:

> Hi
>
>
>
> I noticed that there is a patch which can set hardware timestamp for the
> received
> packets(
> http://www.wand.net.nz/trac/libtrace/browser/Intel%20DPDK%20Patches/
> hardware_timestamp.patch?rev=ce7153dbc6a13c18bf8033af08c1249527754168),
> but
> it only works in e1000 and igb NICs. I want to capture packets with
> timestamp info in 82599 NICs, what should I do? Could you give me some
> help?
>
>
>
> Thanks.
>
>
>
> Chunhai Tan
>
>
>
>
>
>