• Nikolay Aleksandrov's avatar
    net: bridge: vlan options: add support for tunnel mapping set/del · 569da082
    Nikolay Aleksandrov authored
    This patch adds support for manipulating vlan/tunnel mappings. The
    tunnel ids are globally unique and are one per-vlan. There were two
    trickier issues - first in order to support vlan ranges we have to
    compute the current tunnel id in the following way:
     - base tunnel id (attr) + current vlan id - starting vlan id
    This is in line how the old API does vlan/tunnel mapping with ranges. We
    already have the vlan range present, so it's redundant to add another
    attribute for the tunnel range end. It's simply base tunnel id + vlan
    range. And second to support removing mappings we need an out-of-band way
    to tell the option manipulating function because there are no
    special/reserved tunnel id values, so we use a vlan flag to denote the
    operation is tunnel mapping removal.
    Signed-off-by: default avatarNikolay Aleksandrov <nikolay@cumulusnetworks.com>
    Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
    569da082
br_netlink_tunnel.c 6.77 KB