[dpdk-dev] [PATCH 00/12] add TSO support

[Olivier Matz]

This series add TSO support in ixgbe DPDK driver. This is the third
version of the series, but as the previous version [1] was posted several
months ago and included a mbuf rework that is now in mainline, it can
be considered as a new patch series. I'm open to comments on this
patchset, especially on the API (see [2]).

This series first fixes some bugs that were discovered during the
development, adds some changes to the mbuf API (new l4_len and
tso_segsz fields), adds TSO support in ixgbe, reworks testpmd
csum forward engine, and finally adds TSO support in testpmd so it
can be validated.

The new fields added in mbuf try to be generic enough to apply to
other hardware in the future. To delegate the TCP segmentation to the
hardware, the user has to:

  - set the PKT_TX_TCP_SEG flag in mbuf->ol_flags (this flag implies
    PKT_TX_TCP_CKSUM)
  - if it's IPv4, set the PKT_TX_IP_CKSUM flag and write the IP checksum
    to 0 in the packet
  - fill the mbuf offload information: l2_len, l3_len, l4_len, tso_segsz
  - calculate the pseudo header checksum and set it in the TCP header,
    as required when doing hardware TCP checksum offload

The test report will be added as an answer to this cover letter and
could be linked in the concerned commits.

[1] http://dpdk.org/ml/archives/dev/2014-May/002537.html
[2] http://dpdk.org/ml/archives/dev/2014-November/007940.html

Olivier Matz (12):
  igb/ixgbe: fix IP checksum calculation
  ixgbe: fix remaining pkt_flags variable size to 64 bits
  mbuf: move vxlan_cksum flag definition at the proper place
  mbuf: add help about TX checksum flags
  mbuf: remove too specific PKT_TX_OFFLOAD_MASK definition
  mbuf: add functions to get the name of an ol_flag
  mbuf: generic support for TCP segmentation offload
  ixgbe: support TCP segmentation offload
  testpmd: fix use of offload flags in testpmd
  testpmd: rework csum forward engine
  testpmd: support TSO in csum forward engine
  testpmd: add a verbose mode csum forward engine

 app/test-pmd/cmdline.c              | 243 ++++++++++--
 app/test-pmd/config.c               |  15 +-
 app/test-pmd/csumonly.c             | 740 +++++++++++++++++++-----------------
 app/test-pmd/macfwd.c               |   5 +-
 app/test-pmd/macswap.c              |   5 +-
 app/test-pmd/rxonly.c               |  36 +-
 app/test-pmd/testpmd.c              |   3 +-
 app/test-pmd/testpmd.h              |  24 +-
 app/test-pmd/txonly.c               |   9 +-
 examples/ipv4_multicast/main.c      |   3 +-
 lib/librte_mbuf/rte_mbuf.h          | 130 +++++--
 lib/librte_pmd_e1000/igb_rxtx.c     |  16 +-
 lib/librte_pmd_ixgbe/ixgbe_ethdev.c |   3 +-
 lib/librte_pmd_ixgbe/ixgbe_rxtx.c   | 222 ++++++++---
 lib/librte_pmd_ixgbe/ixgbe_rxtx.h   |  19 +-
 15 files changed, 921 insertions(+), 552 deletions(-)

-- 
2.1.0