search for: lag_fdb_del

...the deferred work does get scheduled: /* Check early that we're not doing work in vain. * Host addresses on LAG ports still require regular FDB ops, * since the CPU port isn't in a LAG. */ if (dp->lag && !host_addr) { if (!ds->ops->lag_fdb_add || !ds->ops->lag_fdb_del) return -EOPNOTSUPP; } else { if (!ds->ops->port_fdb_add || !ds->ops->port_fdb_del) return -EOPNOTSUPP; } What you should be doing is you should be using the pahole tool to find a good place for a new unsigned long field in struct dsa_switch, and add a new field ds->suppor...