[dpdk-stable] please help backporting some patches to stable release 19.11.1

[luca.boccassi at gmail.com]

Hi commit authors (and maintainers),

I didn't apply following commits from DPDK master to 19.11
stable branch, as conflicts or build errors occur.

Can authors check your patches in the following list and either:
    - Backport your patches to the 19.11 branch, or
    - Indicate that the patch should not be backported

Please do either of the above by March the 5th 2020.


Some notes on stable backports:

A backport should contain a reference to the DPDK master branch commit
in it's commit message in the following fashion:
    [ upstream commit <commit's dpdk master branch SHA-1 checksum> ]

For example:
    https://git.dpdk.org/dpdk-stable/commit/?h=18.11&id=d90e6ae6f936ecdc2fd3811ff9f26aec7f3c06eb

When sending the backported patch, please indicate the target branch in the
subject line, as we have multiple branches, for example:
    [PATCH 19.11] foo/bar: fix baz

With git format-patch, this can be achieved by appending the parameter:
    --subject-prefix='PATCH 19.11'

Send the backported patch to "stable at dpdk.org" but not "dev at dpdk.org".

FYI, branch 19.11 is located at tree:
   https://git.dpdk.org/dpdk-stable

Thanks.

Luca Boccassi

---
74f96ffdc1  Kalesh AP        net/bnxt: fix return code handling in VLAN config
90c957ef3b  Kalesh AP        net/bnxt: remove a redundant variable
06387be8ea  Matan Azrad      net/mlx5: fix encap/decap validation
bc42413bb9  Suanming Mou     net/mlx5: fix layer flags missing in metadata
6e77151286  Suanming Mou     net/mlx5: fix match information in meter
792e749e92  Suanming Mou     net/mlx5: fix register usage in meter
50f576d657  Suanming Mou     net/mlx5: fix VLAN actions in meter
0654d4a8ad  Thomas Monjalon  app/testpmd: fix hot-unplug detaching