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author | Brett Creeley <brett.creeley@intel.com> | 2020-09-17 13:13:33 -0700 |
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committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2021-06-07 08:30:58 -0700 |
commit | eb550f53099bf5ff8dc5de93e275378510c891c9 (patch) | |
tree | 8d01a44ad72da43cf98dcba940634333015b73c5 /drivers/net/ethernet/intel | |
parent | 1a42624aecba438f1d114430a14b640cdfa51c87 (diff) | |
download | linux-stable-eb550f53099bf5ff8dc5de93e275378510c891c9.tar.gz linux-stable-eb550f53099bf5ff8dc5de93e275378510c891c9.tar.bz2 linux-stable-eb550f53099bf5ff8dc5de93e275378510c891c9.zip |
virtchnl: Use pad byte in virtchnl_ether_addr to specify MAC type
Currently, there is no way for a VF driver to specify that it wants to
change its device/primary unicast MAC address. This makes it
difficult/impossible for the PF driver to track the VF's device/primary
unicast MAC address, which is used for VM/VF reboot and displaying on
the host. Fix this by using 2 bits of a pad byte in the
virtchnl_ether_addr structure so the VF can specify what type of MAC
it's adding/deleting.
Below are the values that should be used by all VF drivers going
forward.
VIRTCHNL_ETHER_ADDR_LEGACY(0):
- The type should only ever be 0 for legacy AVF drivers (i.e.
drivers that don't support the new type bits). The PF drivers
will track VF's device/primary unicast MAC, but this will only
be a best effort.
VIRTCHNL_ETHER_ADDR_PRIMARY(1):
- This type should only be used when the VF is changing their
device/primary unicast MAC. It should be used for both delete
and add cases related to the device/primary unicast MAC.
VIRTCHNL_ETHER_ADDR_EXTRA(2):
- This type should be used when the VF is adding and/or deleting
MAC addresses that are not the device/primary unicast MAC. For
example, extra unicast addresses and multicast addresses
assuming the PF supports "extra" addresses at all.
If a PF is parsing the type field of the virtchnl_ether_addr, then it
should use the VIRTCHNL_ETHER_ADDR_TYPE_MASK to mask the first two bits
of the type field since 0, 1, and 2 are the only valid values.
Signed-off-by: Brett Creeley <brett.creeley@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Diffstat (limited to 'drivers/net/ethernet/intel')
0 files changed, 0 insertions, 0 deletions