tree 3d4b8850e2d3e9c72101f2615013c42e346946eb
parent 92c3bb5393db2f36e6a23ba7bb50b34c18c523f5
author Petr Machata <petrm@nvidia.com> 1687269352 +0200
committer Jakub Kicinski <kuba@kernel.org> 1687381372 -0700

selftests: forwarding: mirror_gre_*: Use port MAC for bridge address

In a future patch, mlxsw will start adding RIFs to uppers of front panel
port netdevices, if they have an IP address.

At the time that the front panel port is enslaved to the bridge, the bridge
MAC address does not have the same prefix as other interfaces in the
system. On Nvidia Spectrum-1 machines all the RIFs have to have the same
38-bit MAC address prefix. Since the bridge does not obey this limitation,
the RIF cannot be created, and the enslavement attempt is vetoed on the
grounds of the configuration not being offloadable.

The bridge eventually inherits MAC address from its first member, after the
enslavement is acked. A number of (mainly VXLAN) selftests already work
around the problem by setting the MAC address to whatever it will
eventually be anyway. Do the same for several mirror_gre selftests.

Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Danielle Ratson <danieller@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>