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When in the PREPARE state of a switchdev transaction, check if the requested VLAN is not already configured on the switch port. This keeps us from getting into a WARNING as below. [ 1389.683296] dpaa2_ethsw dpsw.0 eth0: VLAN 2 already configured [ 1389.689125] ------------[ cut here ]------------ [ 1389.694084] eth0: Commit of object (id=1) failed. [ 1389.698863] WARNING: CPU: 0 PID: 613 at net/switchdev/switchdev.c:277 switchdev_port_obj_add_now+0xcc/0x110 [ 1389.708589] Modules linked in: [ 1389.711634] CPU: 0 PID: 613 Comm: bridge Not tainted 5.9.0-rc2-next-20200828-00112-g7172078477c5 #59 [ 1389.720753] Hardware name: NXP Layerscape LX2160ARDB (DT) [ 1389.726139] pstate: 40000005 (nZcv daif -PAN -UAO BTYPE=--) [ 1389.731698] pc : switchdev_port_obj_add_now+0xcc/0x110 [ 1389.736824] lr : switchdev_port_obj_add_now+0xcc/0x110 Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com> Link: https://lore.kernel.org/r/20201119165017.806696-3-ciorneiioana@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.