Re: [dpdk-dev] [PATCH v2] mbuf: support eCPRI hardware packet type

["Liu, Lingyu" <lingyu.liu@intel.com>]

Hi Olivier,

This new packet type will be used by iavf driver to map ECPRI hardware packet.
This is the patch which will use this new hardware packet type.
http://patchwork.dpdk.org/project/dpdk/patch/20210420083817.10741-3-lingyu.liu@intel.com/



Best Regards,

Lingyu Liu

> -----Original Message-----
> From: Olivier Matz <olivier.matz@6wind.com>
> Sent: Monday, April 19, 2021 10:25 PM
> To: Liu, Lingyu <lingyu.liu@intel.com>
> Cc: dev@dpdk.org; Zhang, Qi Z <qi.z.zhang@intel.com>;
> thomas@monjalon.net; david.marchand@redhat.com; Hemant Agrawal
> <hemant.agrawal@nxp.com>
> Subject: Re: [PATCH v2] mbuf: support eCPRI hardware packet type
> 
> Hi Lingyu,
> 
> On Sat, Apr 17, 2021 at 09:25:31AM +0000, Lingyu Liu wrote:
> > Add L2_ETHER_ECPRI and L4_UDP_TUNNEL_ECPRI in RTE_PTYPE.
> >
> > Signed-off-by: Lingyu Liu <lingyu.liu@intel.com>
> > Acked-by: Hemant Agrawal <hemant.agrawal@nxp.com>
> 
> The number of available packet types for tunnels is quite low (already
> mentionned in this thread [1]).
> 
> [1] https://patches.dpdk.org/project/dpdk/patch/20210408081720.23314-3-
> ktejasree@marvell.com
> 
> Can you give some details about how it will be used? For instance, which
> driver will set it, which kind of application will use it.
> 
> Thanks,
> Olivier
> 
> > ---
> > V2 change:
> >  - refine commit log
> >
> >  app/test-pmd/util.c              | 25 ++++++++++++++++---------
> >  lib/librte_mbuf/rte_mbuf_ptype.c |  2 ++
> > lib/librte_mbuf/rte_mbuf_ptype.h | 22 ++++++++++++++++++++++
> >  3 files changed, 40 insertions(+), 9 deletions(-)
> >
> > diff --git a/app/test-pmd/util.c b/app/test-pmd/util.c index
> > a9e431a8b2..494ebbf909 100644
> > --- a/app/test-pmd/util.c
> > +++ b/app/test-pmd/util.c
> > @@ -258,16 +258,23 @@ dump_pkt_burst(uint16_t port_id, uint16_t
> queue, struct rte_mbuf *pkts[],
> >  				udp_hdr = rte_pktmbuf_mtod_offset(mb,
> >  				struct rte_udp_hdr *,
> >  				l2_len + l3_len);
> > -				l4_len = sizeof(struct rte_udp_hdr);
> > -				vxlan_hdr = rte_pktmbuf_mtod_offset(mb,
> > -				struct rte_vxlan_hdr *,
> > -				l2_len + l3_len + l4_len);
> >  				udp_port = RTE_BE_TO_CPU_16(udp_hdr-
> >dst_port);
> > -				vx_vni = rte_be_to_cpu_32(vxlan_hdr-
> >vx_vni);
> > -				MKDUMPSTR(print_buf, buf_size, cur_len,
> > -					  " - VXLAN packet: packet type =%d, "
> > -					  "Destination UDP port =%d, VNI
> = %d",
> > -					  packet_type, udp_port, vx_vni >> 8);
> > +				l4_len = sizeof(struct rte_udp_hdr);
> > +				if (RTE_ETH_IS_ECPRI_HDR(packet_type)) {
> > +					MKDUMPSTR(print_buf, buf_size,
> cur_len,
> > +						  " - eCPRI packet: packet type
> =%d, "
> > +						  "Destination UDP port =%d",
> > +						  packet_type, udp_port);
> > +				} else {
> > +					vxlan_hdr =
> rte_pktmbuf_mtod_offset(mb,
> > +					struct rte_vxlan_hdr *,
> > +					l2_len + l3_len + l4_len);
> > +					vx_vni =
> rte_be_to_cpu_32(vxlan_hdr->vx_vni);
> > +					MKDUMPSTR(print_buf, buf_size,
> cur_len,
> > +						  " - VXLAN packet: packet
> type =%d, "
> > +						  "Destination UDP port =%d,
> VNI = %d",
> > +						  packet_type, udp_port,
> vx_vni >> 8);
> > +				}
> >  			}
> >  		}
> >  		MKDUMPSTR(print_buf, buf_size, cur_len, diff --git
> > a/lib/librte_mbuf/rte_mbuf_ptype.c b/lib/librte_mbuf/rte_mbuf_ptype.c
> > index d6f906b06c..2bf97c89c6 100644
> > --- a/lib/librte_mbuf/rte_mbuf_ptype.c
> > +++ b/lib/librte_mbuf/rte_mbuf_ptype.c
> > @@ -21,6 +21,7 @@ const char *rte_get_ptype_l2_name(uint32_t ptype)
> >  	case RTE_PTYPE_L2_ETHER_PPPOE: return "L2_ETHER_PPPOE";
> >  	case RTE_PTYPE_L2_ETHER_FCOE: return "L2_ETHER_FCOE";
> >  	case RTE_PTYPE_L2_ETHER_MPLS: return "L2_ETHER_MPLS";
> > +	case RTE_PTYPE_L2_ETHER_ECPRI: return "L2_ETHER_ECPRI";
> >  	default: return "L2_UNKNOWN";
> >  	}
> >  }
> > @@ -71,6 +72,7 @@ const char *rte_get_ptype_tunnel_name(uint32_t
> ptype)
> >  	case RTE_PTYPE_TUNNEL_VXLAN_GPE: return "TUNNEL_VXLAN_GPE";
> >  	case RTE_PTYPE_TUNNEL_MPLS_IN_UDP: return
> "TUNNEL_MPLS_IN_UDP";
> >  	case RTE_PTYPE_TUNNEL_MPLS_IN_GRE: return
> "TUNNEL_MPLS_IN_GRE";
> > +	case RTE_PTYPE_TUNNEL_ECPRI: return "TUNNEL_ECPRI";
> >  	default: return "TUNNEL_UNKNOWN";
> >  	}
> >  }
> > diff --git a/lib/librte_mbuf/rte_mbuf_ptype.h
> > b/lib/librte_mbuf/rte_mbuf_ptype.h
> > index 17a2dd3576..5fdf369ac0 100644
> > --- a/lib/librte_mbuf/rte_mbuf_ptype.h
> > +++ b/lib/librte_mbuf/rte_mbuf_ptype.h
> > @@ -144,6 +144,13 @@ extern "C" {
> >   * <'ether type'=[0x8847|0x8848]>
> >   */
> >  #define RTE_PTYPE_L2_ETHER_MPLS             0x0000000a
> > +/**
> > + * eCPRI (extend Common Public Radio Interface) packet type.
> > + *
> > + * Packet format:
> > + * <'ether type'=[0xAEFE]>
> > + */
> > +#define RTE_PTYPE_L2_ETHER_ECPRI            0x0000000b
> >  /**
> >   * Mask of layer 2 packet types.
> >   * It is used for outer packet for tunneling cases.
> > @@ -491,6 +498,19 @@ extern "C" {
> >   * | 'destination port'=6635>
> >   */
> >  #define RTE_PTYPE_TUNNEL_MPLS_IN_UDP      0x0000d000
> > +/**
> > + * ECPRI packet type.
> > + *
> > + * Packet format:
> > + * <'ether type'=0x0800
> > + * | 'version'=4, 'protocol'=17,
> > + * | 'destination port'=5123>
> > + * or,
> > + * <'ether type'=0x86DD
> > + * | 'version'=6, 'protocol'=17,
> > + * | 'destination port'=5123>
> > + */
> > +#define RTE_PTYPE_TUNNEL_ECPRI              0x0000e000
> >  /**
> >   * Mask of tunneling packet types.
> >   */
> > @@ -688,6 +708,8 @@ extern "C" {
> >  		RTE_PTYPE_INNER_L3_MASK |				\
> >  		RTE_PTYPE_INNER_L4_MASK))
> >
> > +/* Check if it is a ECPRI packet */
> > +#define  RTE_ETH_IS_ECPRI_HDR(ptype) ((ptype) &
> > +RTE_PTYPE_TUNNEL_ECPRI)
> >  /**
> >   * Get the name of the l2 packet type
> >   *
> > --
> > 2.25.1
> >