BR_ROOT_BLOCK
!!(p->flags & BR_ROOT_BLOCK)) ||
br_set_port_flag(p, tb, IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK);
if (p->flags & BR_ROOT_BLOCK)
BRPORT_ATTR_FLAG(root_block, BR_ROOT_BLOCK);
IFLA_BRPORT_PROTECT, BR_ROOT_BLOCK) ||