As i40e hardware can be reconfigured to support QinQ stripping and
insertion, this patch set is to enable that together with using the
reserved 16 bits in 'struct rte_mbuf' for the second vlan tag.
Corresponding command is added in testpmd for testing.
Note that no need to rework vPMD, as nothings used in it changed.

v2 changes:
* Added more commit logs of which commit it fix for.
* Fixed a typo.
* Kept the original RX/TX offload flags as they were, added new
  flags after with new bit masks, for ABI compatibility.
* Supported double vlan stripping/insertion in examples/ipv4_multicast.

Helin Zhang (6):
  ixgbe: remove a discarded source line
  mbuf: use the reserved 16 bits for double vlan
  i40e: support double vlan stripping and insertion
  i40evf: add supported offload capability flags
  app/testpmd: add test cases for qinq stripping and insertion
  examples/ipv4_multicast: support double vlan stripping and insertion

 app/test-pmd/cmdline.c            | 78 +++++++++++++++++++++++++++++++++----
 app/test-pmd/config.c             | 21 +++++++++-
 app/test-pmd/flowgen.c            |  4 +-
 app/test-pmd/macfwd.c             |  3 ++
 app/test-pmd/macswap.c            |  3 ++
 app/test-pmd/rxonly.c             |  3 ++
 app/test-pmd/testpmd.h            |  6 ++-
 app/test-pmd/txonly.c             |  8 +++-
 drivers/net/i40e/i40e_ethdev.c    | 52 +++++++++++++++++++++++++
 drivers/net/i40e/i40e_ethdev_vf.c | 13 +++++++
 drivers/net/i40e/i40e_rxtx.c      | 81 +++++++++++++++++++++++++--------------
 drivers/net/ixgbe/ixgbe_rxtx.c    |  1 -
 examples/ipv4_multicast/main.c    |  1 +
 lib/librte_ether/rte_ethdev.h     |  2 +
 lib/librte_mbuf/rte_mbuf.h        | 10 ++++-
 15 files changed, 243 insertions(+), 43 deletions(-)

-- 
1.9.3