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a9d2d53a78
There are two methods for setting mac addresses in a Macvlan, that differentiate themselves in the function macvlan_set_mac_Address. If the macvlan mode is passthru, then we use the dev_set_mac_address method, otherwise we use the dev_uc api via macvlan_sync_addresses. The latter method (which would stem from using any non-passthru mode, like bridge, or vepa), calls down into the driver in a path that terminates in ixgbevf_set_uc_addr_vf, which sends a IXGBE_VF_SET_MACVLAN message, which causes the pf to spawn the noted error message. This occurs because it appears that the guest is trying to delete the mac address of the macvlan before adding another. The other path in macvlan_set_mac_address uses dev_set_mac_address, which calls into ixgbevf_set_mac which uses the IXGBE_VF_SET_MAC_ADDR to the pf to set the macvlan mac address. The discrepancy here is in the handlers. The handler function for IXGBE_VF_SET_MAC_ADDR (ixgbe_set_vf_mac_addr) has a check for the vfinfo[].trusted bit to allow the operation if the vf is trusted. In comparison, the IXGBE_VF_SET_MACVLAN message handler (ixgbe_set_vf_macvlan_msg) has no such check of the trusted bit. Signed-off-by: Ken Cox <jkc@redhat.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. 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.