Reg Packet Type Issue in Intel X710 NIC

[Stephen Hemminger]

On Mon, 16 Oct 2023 22:47:18 +0530
Harrish SJ <harrish at aviznetworks.com> wrote:

> Hi Team,
> 
> We are observing below issues w.r.t Packet types in Intel X710 NIC
> 
> NIC Details: (from dpdk-devbind -s)
> Network devices using DPDK-compatible driver
> ============================================
> 0000:81:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=igb_uio unused=i40e,vfio-pci,uio_pci_generic
> 0000:82:00.1 'Ethernet Controller X710 for 10GbE SFP+ 1572' drv=igb_uio unused=i40e,vfio-pci,uio_pci_generic
> 
> Packet type is not set as L2_ETHER_VLAN and only set as L2_ETHER when the packet is received as VLAN tagged.
> IP Packet type is set as L3_IPV4_EXT_UNKNOWN for IP/IP+UDP packets - Is this expected.?
> Packet type is set as UNKNOWN for GTP packets even after configuring DDP profile for the ports used.
> 
> testpmd> ddp get list 0  
> Profile number is: 1
> 
> Profile 0:
> Track id:     0x80000008
> Version:      1.0.4.0
> Profile name: GTPv1-C/U IPv4/IPv6 payload
> 
> Could you please help us in resolving/providing your inputs on the above issues observed.?
> Thanks in advance,
> 
> Regards and Thanks,
> Harrish.S.J
> 

Since in most cases VLAN is offloaded in mbuf and RTE_MBUF_F_RX_VLAN_STRIPPED is set
in offload flags.  If VLAN is stripped it makes sense that the packet type could just
be L2_ETHER but it looks like it maybe driver dependent which is not good.