[dpdk-dev] [PATCH v6 00/18] unified packet type

[Helin Zhang <helin.zhang@intel.com>]

Currently only 6 bits which are stored in ol_flags are used to indicate
the packet types. This is not enough, as some NIC hardware can recognize
quite a lot of packet types, e.g i40e hardware can recognize more than 150
packet types. Hiding those packet types hides hardware offload capabilities
which could be quite useful for improving performance and for end users. So
an unified packet types are needed to support all possible PMDs. A 16 bits
packet_type in mbuf structure can be changed to 32 bits and used for this
purpose. In addition, all packet types stored in ol_flag field should be
deleted at all, and 6 bits of ol_flags can be save as the benifit.

Initially, 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.

To avoid breaking ABI compatibility, currently all the code changes for
unified packet type are disabled at compile time by default. Users can
enable it manually by defining the macro of RTE_UNIFIED_PKT_TYPE. The code
changes will be valid by default in a future release, and the old version
will be deleted accordingly, after the ABI change process is done.

v2 changes:
* Enlarged the packet_type field from 16 bits to 32 bits.
* Redefined the packet type sub-fields.
* Updated the 'struct rte_kni_mbuf' for KNI according to the mbuf changes.
* Used redefined packet types and enlarged packet_type field for all PMDs
  and corresponding applications.
* Removed changes in bond and its relevant application, as there is no need
  at all according to the recent bond changes.

v3 changes:
* Put the mbuf layout changes into a single patch.
* Put vector ixgbe changes right after mbuf changes.
* Disabled vector ixgbe PMD by default, as mbuf layout changed, and then
  re-enabled it after vector ixgbe PMD updated.
* Put the definitions of unified packet type into a single patch.
* Minor bug fixes and enhancements in l3fwd example.

v4 changes:
* Added detailed description of each packet types.
* Supported unified packet type of fm10k.
* Added printing logs of packet types of each received packet for rxonly
  mode in testpmd.
* Removed several useless code lines which block packet type unification from
  app/test/packet_burst_generator.c.

v5 changes:
* Added more detailed description for each packet types, together with examples.
* Rolled back the macro definitions of RX packet flags, for ABI compitability.

v6 changes:
* Disabled the code changes for unified packet type by default, to
  avoid breaking ABI compatibility.

Helin Zhang (18):
  mbuf: redefine packet_type in rte_mbuf
  ixgbe: support unified packet type in vectorized PMD
  mbuf: add definitions of unified packet types
  e1000: replace bit mask based packet type with unified packet type
  ixgbe: replace bit mask based packet type with unified packet type
  i40e: replace bit mask based packet type with unified packet type
  enic: replace bit mask based packet type with unified packet type
  vmxnet3: replace bit mask based packet type with unified packet type
  fm10k: replace bit mask based packet type with unified packet type
  app/test-pipeline: replace bit mask based packet type with unified
    packet type
  app/testpmd: replace bit mask based packet type with unified packet
    type
  app/test: Remove useless code
  examples/ip_fragmentation: replace bit mask based packet type with
    unified packet type
  examples/ip_reassembly: replace bit mask based packet type with
    unified packet type
  examples/l3fwd-acl: replace bit mask based packet type with unified
    packet type
  examples/l3fwd-power: replace bit mask based packet type with unified
    packet type
  examples/l3fwd: replace bit mask based packet type with unified packet
    type
  mbuf: remove old packet type bit masks

 app/test-pipeline/pipeline_hash.c                  |  13 +
 app/test-pmd/csumonly.c                            |  14 +
 app/test-pmd/rxonly.c                              | 183 +++++++
 app/test/packet_burst_generator.c                  |   6 +-
 drivers/net/e1000/igb_rxtx.c                       | 102 ++++
 drivers/net/enic/enic_main.c                       |  26 +
 drivers/net/fm10k/fm10k_rxtx.c                     |  27 ++
 drivers/net/i40e/i40e_rxtx.c                       | 528 +++++++++++++++++++++
 drivers/net/ixgbe/ixgbe_rxtx.c                     | 163 +++++++
 drivers/net/ixgbe/ixgbe_rxtx_vec.c                 |  75 ++-
 drivers/net/vmxnet3/vmxnet3_rxtx.c                 |   8 +
 examples/ip_fragmentation/main.c                   |   9 +
 examples/ip_reassembly/main.c                      |   9 +
 examples/l3fwd-acl/main.c                          |  29 +-
 examples/l3fwd-power/main.c                        |   8 +
 examples/l3fwd/main.c                              | 123 ++++-
 .../linuxapp/eal/include/exec-env/rte_kni_common.h |   6 +
 lib/librte_mbuf/rte_mbuf.c                         |   4 +
 lib/librte_mbuf/rte_mbuf.h                         | 514 ++++++++++++++++++++
 19 files changed, 1834 insertions(+), 13 deletions(-)

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1.9.3