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commit5c976a5657upstream. Bridging, and possibly other upper stack gizmos, adds the lower device's netdev->dev_addr to its own uc list, and then requests it be deleted when the upper bridge device is removed. This delete request also happens with the bridging vlan_filtering is enabled and then disabled. Bonding has a similar behavior with the uc list, but since it also uses set_mac to manage netdev->dev_addr, it doesn't have the same the failure case. Because we store our netdev->dev_addr in our uc list, we need to ignore the delete request from dev_uc_sync so as to not lose the address and all hope of communicating. Note that ndo_set_mac_address is expressly changing netdev->dev_addr, so no limitation is set there. Fixes:2a654540be("ionic: Add Rx filter and rx_mode ndo support") Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net> 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.