Re: [dpdk-dev] [EXT] Re: [dpdk-stable] [PATCH] net/octeontx2: fix ptp functionality

[Harman Kalra <hkalra@marvell.com>]

On Mon, Feb 17, 2020 at 02:54:13PM +0000, Ferruh Yigit wrote:
> On 2/17/2020 2:35 PM, Harman Kalra wrote:
> > On Mon, Feb 17, 2020 at 01:21:13PM +0000, Ferruh Yigit wrote:
> >> External Email
> >>
> >> ----------------------------------------------------------------------
> >> On 2/15/2020 8:35 AM, Harman Kalra wrote:
> >>> PTP functionality has been broken after a change in kernel
> >>> where enum npc_kpu_lc_ltype is change to allow adjustment of
> >>> LTYPE_MASK to detect all types of IP headers.
> >>> Syncing the required changes in DPDK to fix the issue.
> >>
> >> Hi Harman,
> >>
> >> Can you please provide references for,
> >> - What is the kernel commit causing the mentioned change?
> >> - After this change which version of the kernel supported by the PMD?
> > 
> > Hi Ferruh
> > The kernel change I was refering to was in our internel kernel repo
> > and those kernel changes have not been upstreamed yet. Currently its part
> > of our marvell SDK version SDK-10.3.1.x.
> 
> Got it, what is the dependency of the PMD to the Linux kernel? And does the PMD
> works with upstream kernels?

Yes, for basic functionality PMD works fine with upstreamed kernel but for
supporting some advanced features like PTP, kernel changes are yet to be
upstreamed. Our kernel driver for octeontx2 PMD:
https://github.com/torvalds/linux/tree/master/drivers/net/ethernet/marvell/octeontx2/af
Kernel upstreaming activity is not in same pace as DPDK.

Thanks
Harman
> 
> > 
> > Thanks
> > Harman
> > 
> >>
> >>>
> >>> Fixes: b5dc3140448e ("net/octeontx2: support base PTP")
> >>> Cc: stable@dpdk.org
> >>>
> >>> Signed-off-by: Harman Kalra <hkalra@marvell.com>
> >>> ---
> >>>  drivers/common/octeontx2/hw/otx2_npc.h | 4 ++--
> >>>  1 file changed, 2 insertions(+), 2 deletions(-)
> >>>
> >>> diff --git a/drivers/common/octeontx2/hw/otx2_npc.h b/drivers/common/octeontx2/hw/otx2_npc.h
> >>> index a0536e0ae..3dfc137a3 100644
> >>> --- a/drivers/common/octeontx2/hw/otx2_npc.h
> >>> +++ b/drivers/common/octeontx2/hw/otx2_npc.h
> >>> @@ -201,7 +201,8 @@ enum npc_kpu_lb_ltype {
> >>>  };
> >>>  
> >>>  enum npc_kpu_lc_ltype {
> >>> -	NPC_LT_LC_IP = 1,
> >>> +	NPC_LT_LC_PTP = 1,
> >>> +	NPC_LT_LC_IP,
> >>>  	NPC_LT_LC_IP_OPT,
> >>>  	NPC_LT_LC_IP6,
> >>>  	NPC_LT_LC_IP6_EXT,
> >>> @@ -209,7 +210,6 @@ enum npc_kpu_lc_ltype {
> >>>  	NPC_LT_LC_RARP,
> >>>  	NPC_LT_LC_MPLS,
> >>>  	NPC_LT_LC_NSH,
> >>> -	NPC_LT_LC_PTP,
> >>>  	NPC_LT_LC_FCOE,
> >>>  };
> >>>  
> >>>
> >>
>