124. PTYPE Mapping Tests

All PTYPEs (packet types) in DPDK PMDs before are statically defined using static constant map tables. It makes impossible to add a new packet type without first defining them statically and then recompiling DPDK. New NICs are flexible enough to be reconfigured depending on the network environment. In case of Intel® Ethernet 700 Series new PTYPEs can be added dynamically at device initialization time using corresponding AQ commands. Note that the packet types of the same packet recognized by different hardware may be different, as different hardware may have different capabilities of packet type recognition.

This 32 bits of packet_type can be divided into several sub fields to indicate different packet type information of a packet. The initial design is to divide those bits into fields for L2 types, L3 types, L4 types, tunnel types, inner L2 types, inner L3 types and inner L4 types. All PMDs should translate the offloaded packet types into these 7 fields of information for user applications.

124.1. Prerequisites

Add print info to testpmd for case:

sed -i -e '/printf(\" - VLAN tci=0x%x\", mb->vlan_tci);/a\\\\t\\tprintf(\" - pktype: 0x%x\", mb->packet_type);' app/test-pmd/util.c

Start testpmd, enable rxonly and verbose mode:

./<build_target>/app/dpdk-testpmd -c f -n 4 -- -i --port-topology=chained

124.2. Test Case 1: Get ptype mapping

Get hardware defined ptype to software defined ptype mapping items:

testpmd> ptype mapping get <port_id> <valid_only>

Note that valid_only parameter:

(0) target represents a specific software defined ptype.
(!0) target is a mask to represent a group of software defined ptypes.

Check the table, first column is hardware ptype, second column is software ptype. Take hw_ptype is 24 for example:

 ...
 22     0x00000391
 23     0x00000691
 24     0x00000291
 26     0x00000191
 27     0x00000491
 ...

 [24] = RTE_PTYPE_L2_ETHER | RTE_PTYPE_L3_IPV4_EXT_UNKNOWN |
                         RTE_PTYPE_L4_UDP,

RTE_PTYPE_L2_ETHER defined as 0x00000001,
RTE_PTYPE_L3_IPV4_EXT_UNKNOWN defined as 0x00000090,
RTE_PTYPE_L4_UDP defined as 0x00000200,

Calculate with L2/L3/L4 mask, we can get the ptype is 0x00000291.

  1. Set <valid_only> as 0, Check that get 0~255 full columns ptype mapping items.

  2. Set <valid_only> as 1, Check that get defined ptype mapping items.

  3. Send packets, check RX dump packets software and hardware ptypes’ correctness as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x02601091 38
    ETHER IPV4_EXT_UNKNOWN Unknown GRENAT ETHER_VLAN IPV4_EXT_UNKNOWN | NONFRAG 0x06426091 75

    Dumped packet:

    testpmd> port 0/queue 0: received 1 packets
  src=00:00:00:00:00:00 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 -
  length=122 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN
  TUNNEL_IP INNER_L3_IPV6_EXT_UNKNOWN INNER_L4_UDP - sw ptype:
  L2_ETHER L3_IPV4 TUNNEL_IP INNER_L3_IPV6 INNER_L4_UDP  - l2_len=14
  - l3_len=20 - tunnel_len=0 - inner_l3_len=40 - inner_l4_len=8 -
  Receive queue=0x0
  ol_flags: PKT_RX_L4_CKSUM_GOOD PKT_RX_IP_CKSUM_GOOD
  port 0/queue 0: received 1 packets
  src=00:00:00:00:00:00 - dst=FF:FF:FF:FF:FF:FF - type=0x0800 -
  length=120 - nb_segs=1 - hw ptype: L2_ETHER L3_IPV4_EXT_UNKNOWN
  TUNNEL_GRENAT INNER_L2_ETHER_VLAN INNER_L3_IPV4_EXT_UNKNOWN
  INNER_L4_NONFRAG  - sw ptype: L2_ETHER L3_IPV4 TUNNEL_NVGRE
  INNER_L2_ETHER_VLAN INNER_L3_IPV4  - l2_len=14 - l3_len=20 -
  tunnel_len=8 - inner_l2_len=18 - inner_l3_len=20 - Receive
  queue=0x0 ol_flags: PKT_RX_L4_CKSUM_GOOD PKT_RX_IP_CKSUM_GOOD

124.3. Test Case 2: Reset ptype mapping

  1. Send packet and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN UDP 0x02601091 38

  2. Check ptype mapping items: hw_ptype=38, sw_ptype=0x02601091

  3. Update hardware defined ptype to software defined packet type mapping table. Note that hw_ptype should among 0~255, sw_ptype should conform defined mask, e.g. change outer L3 value to 0x000000e0, which is IPV6_EXT_UNKNOWN:

    testpmd> ptype mapping update 0 38 0x026010e1

  4. Check ptype mapping hw_ptype=38 and sw_ptype is updated to 0x026010e1

  5. Send packet and dump RX, check outer_L3 is changed to IPV6_EXT_UNKNOWN:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)

  6. Reset ptype mapping table to default:

    testpmd> ptype mapping reset <port_id>

  7. Check ptype mapping hw_ptype=38 and sw_ptype is updated to 0x02601091

  8. Send packet and dump RX, check outer_L3 is changed to IPV4_EXT_UNKNOWN

124.4. Test Case 3: Update ptype mapping

  1. Send packets and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x02601091 38
    ETHER IPV4_EXT_UNKNOWN Unknown GRENAT ETHER_VLAN IPV4_EXT_UNKNOWN | NONFRAG 0x06426091 75

  2. Get defined ptype mapping items, check when hw_ptype=38,sw_ptype is 0x02601091, when hw_ptype=75, sw_ptype is 0x06426091

  3. Update hardware defined ptype to software defined packet type mapping table. Note that hw_ptype should among 0~255, sw_ptype should conform defined mask, e.g. change outer L3 value to 0x000000e0, which is IPV6_EXT_UNKNOWN:

    testpmd> ptype mapping update 0 38 0x026010e1

  4. Update [75]’s sw_ptype same to [38]’s sw_ptypes:

    testpmd> ptype mapping update 0 75 0x026010e1

  5. Check ptype mapping items: when hw_ptype=38, sw_ptype is updated to value 0x026010e1, when hw_ptype=75,sw_ptype is updated to value 0x026010e1

  6. Send packets and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table, outer_L3 is changed to IPV6_EXT_UNKNOWN:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV6_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x026010e1 38
    ETHER IPV6_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x026010e1 75

  7. Reset hardware defined ptype to software defined ptype mapping table to default:

    testpmd> ptype mapping reset <port_id>

  8. Check ptype mapping items: when hw_ptype=38, sw_ptype is changed back to value 00x02601091, when hw_ptype=75, sw_ptype is changed back to 0x06426091

  9. Send packet and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x02601091 38
    ETHER IPV4_EXT_UNKNOWN Unknown GRENAT ETHER_VLAN IPV4_EXT_UNKNOWN | NONFRAG 0x06426091 75

124.5. Test Case 4: Replace ptype mapping

Replace a specific or a group of software defined ptypes with a new one:

testpmd> ptype mapping replace <port_id> <target> <mask> <pkt_type>

Note that target is the packet type to be replaced, pkt_type is the new packet type to overwrite, mask is defined as below:

(0) target represents a specific software defined ptype.
(!0) target is a mask to represent a group of software defined ptypes.

  1. Send packets and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2,inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN UDP 0x02601091 38
    ETHER IPV4_EXT_UNKNOWN Unknown GRENAT ETHER_VLAN IPV4_EXT_UNKNOWN NONFRAG 0x06426091 75

  2. Replace a specific software defined ptypes with a new one. e.g. change outer_L3 from Tunnel GRENAT to IP, so change mask from xxxx6xxx to xxxx1xxx:

    testpmd> ptype mapping replace 0 0x06426091 0 0x06421091

  3. Update [38]’s sw_ptype same to [75]’s as 0x06421091:

    testpmd> ptype mapping update 0 38 0x06421091

  4. Send packet and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP ETHER_VLAN IPV4_EXT_UNKNOWN | NONFRAG 0x06421091 38
    ETHER IPV4_EXT_UNKNOWN Unknown IP ETHER_VLAN IPV4_EXT_UNKNOWN | NONFRAG 0x06421091 75

  5. Mapping table has at least two same sw_ptype 0x06421091, update a group of 0x06421091 to 0x02601091:

    testpmd> ptype mapping replace 0 0x06421091 1 0x02601091

  6. Check ptype mapping items: when hw_ptype=38, sw_ptype is updated to 0x02601091, when hw_ptype=75, sw_ptype is updated to 0x02601091

  7. Send packet and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x02601091 38
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x02601091 75

  8. Reset hardware defined ptype to software defined ptype mapping table to default:

    testpmd> ptype mapping reset <port_id>

  9. Check ptype mapping items: when hw_ptype=38, sw_ptype is changed back to value 00x02601091, when hw_ptype=75, sw_ptype is changed back to 0x06426091

  10. Send packet and dump RX, check outer_L2, outer_L3, outer_L4, tunnel, inner L2, inner L3, inner L4 as below table:

    sendp([Ether()/IP()/IPv6()/UDP()/Raw('\0'*40)],iface=txItf)
sendp([Ether()/IP()/NVGRE()/Ether()/Dot1Q()/IP()/Raw('\0'*40)],iface=txItf)
    Outer L2 Outer L3 Outer L4 Tunnel Inner L2 Inner L3 Inner L4 sw_ptype hw_ptype
    ETHER IPV4_EXT_UNKNOWN Unknown IP Unknown IPV6_EXT_UNKNOWN | UDP 0x02601091 38
    ETHER IPV4_EXT_UNKNOWN Unknown GRENAT ETHER_VLAN IPV4_EXT_UNKNOWN | NONFRAG 0x06426091 75