[dpdk-dev] [PATCH v2 00/13] Mbuf Structure Rework, part 2

[Bruce Richardson]

This patch set continues on from the changes in part 1, and depends
upon that patch set.

This patch set reorders the fields in the mbuf structure and splits
the structure across two cache lines, given lots of new space for new
fields to be added. This set uses some of that space by expanding the 
ol_flags field. A part 3 patchset is planned to introduce some other
new fields into the new mbuf structure.

With the splitting of the mbuf across multiple cache lines, performance
degradations are seen inside the drivers, both fast-path and slow path.
For the fast-path, this patchset reworks the way in which the pool pointer
is used to free packets post-TX, which removes the perf regression. For
the slow path, an alternative approach is taken - a new scattered packets
RX function is introduced into the vector PMD. Using this function,
throughput for the slow path RX-TX using testpmd is increased by up to 20%
over the original baseline.

Changes in V2:
* General minor updates follow comments on V1 set
* Updated a number of patches to include KNI mbuf changes where needed
* Deferred the patch to add the packet type field to a future patch set
* After removing meta-data element from mbuf structure also added in patch
  to move the macros to rte_port/rte_port.h

Bruce Richardson (11):
  mbuf: reorder fields by time of use
  mbuf: expand ol_flags field to 64-bits
  mbuf: introduce a flag to indicate a control mbuf
  mbuf: minor changes for readability
  mbuf: use macros only to access the mbuf metadata
  mbuf: add named points inside the mbuf structure
  ixgbe: rework vector pmd following mbuf changes
  mbuf: split mbuf across two cache lines.
  mbuf: move l2_len and l3_len to second cache line
  ixgbe: Fix perf regression due to moved pool ptr
  ixgbe: Improve slow-path perf: vector scattered RX

Olivier Matz (1):
  mbuf: replace data pointer by an offset

 app/test-pmd/config.c                              |   8 +-
 app/test-pmd/csumonly.c                            |  10 +-
 app/test-pmd/flowgen.c                             |   2 +-
 app/test-pmd/icmpecho.c                            |   2 +-
 app/test-pmd/ieee1588fwd.c                         |   4 +-
 app/test-pmd/macfwd-retry.c                        |   2 +-
 app/test-pmd/macfwd.c                              |   2 +-
 app/test-pmd/macswap.c                             |   2 +-
 app/test-pmd/rxonly.c                              |   4 +-
 app/test-pmd/testpmd.c                             |   2 +-
 app/test-pmd/testpmd.h                             |   4 +-
 app/test-pmd/txonly.c                              |   9 +-
 app/test/packet_burst_generator.c                  |   7 +-
 app/test/test_mbuf.c                               |   8 +-
 app/test/test_table_acl.c                          |   7 +-
 app/test/test_table_pipeline.c                     |   8 +-
 examples/exception_path/main.c                     |   3 +-
 examples/vhost/main.c                              |  37 +-
 examples/vhost_xen/main.c                          |  14 +-
 .../linuxapp/eal/include/exec-env/rte_kni_common.h |  20 +-
 lib/librte_eal/linuxapp/kni/kni_net.c              |  18 +-
 lib/librte_ip_frag/rte_ipv4_fragmentation.c        |   6 +-
 lib/librte_ip_frag/rte_ipv6_fragmentation.c        |   6 +-
 lib/librte_mbuf/rte_mbuf.c                         |  10 +-
 lib/librte_mbuf/rte_mbuf.h                         | 139 ++++----
 lib/librte_pmd_bond/rte_eth_bond_pmd.c             |   4 +-
 lib/librte_pmd_e1000/em_rxtx.c                     |  46 ++-
 lib/librte_pmd_e1000/igb_rxtx.c                    |  75 ++--
 lib/librte_pmd_i40e/i40e_rxtx.c                    |  48 +--
 lib/librte_pmd_ixgbe/ixgbe_rxtx.c                  | 100 +++---
 lib/librte_pmd_ixgbe/ixgbe_rxtx.h                  |  24 +-
 lib/librte_pmd_ixgbe/ixgbe_rxtx_vec.c              | 389 +++++++++++++--------
 lib/librte_pmd_pcap/rte_eth_pcap.c                 |   9 +-
 lib/librte_pmd_virtio/virtio_rxtx.c                |  10 +-
 lib/librte_pmd_virtio/virtqueue.h                  |   3 +-
 lib/librte_pmd_vmxnet3/vmxnet3_rxtx.c              |   5 +-
 lib/librte_pmd_xenvirt/rte_eth_xenvirt.c           |   2 +-
 37 files changed, 586 insertions(+), 463 deletions(-)

-- 
1.9.3