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9b412cc35f
LAG offload can't be enabled if the enslaved PF is not lag master, which is indicated by HCA capabilities bit. It is cleared if more than 64 VFs are configured for this PF. Previously, a data structure is created to store lag info, including PFs to be enslaved, then a handler is registered for netdev notifier. However, this initialization is skipped if PF is not lag master. So PF can't handle CHANGEUPPER event from upper bond device. Even worse, PF is enslaved silently, and LAG offload is not activated. Fix this by registering netdev notifier for PFs which are not lag masters. When CHANGEUPPER event is received, and both physical ports (and only them) on the same NIC are about to be enslaved, a warning is returned for user to know it. Signed-off-by: Jianbo Liu <jianbol@mellanox.com> Reviewed-by: Raed Salem <raeds@mellanox.com> Reviewed-by: Roi Dayan <roid@mellanox.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Raed Salem <raeds@nvidia.com> Reviewed-by: Roi Dayan <roid@nvidia.com> Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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.