AU_DBUF_HEADER
darg.data_size = AU_DBUF_HEADER + aubuf->aub_size;
alloc_size = AU_DBUF_HEADER + sizeof (uint32_t);
alloc_size = AU_DBUF_HEADER;
kmem_free(kctx->auk_dbuffer, AU_DBUF_HEADER +
kctx->auk_dbuffer = kmem_alloc(AU_DBUF_HEADER + new_sz,
kmem_free(kctx->auk_dbuffer, AU_DBUF_HEADER + kctx->auk_queue.buflen);
kmem_alloc(AU_DBUF_HEADER + kctx->auk_queue.bufsz, KM_SLEEP);