d52ef88a9f
Currently when MAC address is changed, regardless of the netdev reg_state,
GID entries are removed and added to reflect the new MAC address and new
default GID entries.
When a bonding device is used and the underlying PCI device is removed
several netdevice events are generated. Two events of the interest are
CHANGEADDR and UNREGISTER event on lower(slave) netdevice of the bond
netdevice.
Sometimes CHANGEADDR event is generated when netdev state is
UNREGISTERING (after UNREGISTER event is generated). In this scenario, GID
entries for default GIDs are added and never deleted because GID entries
are deleted only when netdev state is < UNREGISTERED.
This leads to non zero reference count on the netdevice. Due to this, PCI
device unbind operation is getting stuck.
To avoid it, when changing mac address, add GID entries only if netdev is
in REGISTERED state.
Fixes: 03db3a2d81e6 ("IB/core: Add RoCE GID table management")
Signed-off-by: Parav Pandit <parav@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.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.