Setting skb->priority with libnetfilter_queue

[Brad Fisher <brad@info-link.net>]

Does anyone know how I could go about setting the skb->priority for 
queued packets?  I'd like to have my userspace program be able to 
classify packets dynamically, but I believe that would require either 
the skb pointer to the enqueued packet so I could use setsockopt, or a 
change to the libnetfilter_queue api.  I suppose one could add a 
function like:

    int nfq_set_verdict_mark_priority(struct nfq_q_handle *qh, u_int32_t 
id, u_int32_t verdict, u_int32_t mark, u_int32_t priority,
                                u_int32_t data_len, unsigned char *buf)

(or perhaps it  could be called nfq_set_mark_classify?)

Either way, it seems that both the kernel and libnetfilter_queue must be 
modified.  I'm hoping I'm wrong and that there is a way to do what I 
want without patching the kernel and libnetfilter_queue.  If so could 
someone please enlighten me?

-Brad