quoted

+static unsigned nvmet_tcp_recv_budget = 8;
+module_param_named(recv_budget, nvmet_tcp_recv_budget, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(recv_budget, "recvs budget");
+
+static unsigned nvmet_tcp_send_budget = 8;
+module_param_named(send_budget, nvmet_tcp_send_budget, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(send_budget, "sends budget");
+
+static unsigned nvmet_tcp_io_work_budget = 64;
+module_param_named(io_work_budget, nvmet_tcp_io_work_budget, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(io_work_budget, "io work budget");

I strongly suggest moving away from module parameters for this stuff.

Create a genetlink socket family and allow run time configuration of these knobs
by the user.

Thanks for the feedback Dave.

Given that these are non-trivial knobs to configure at runtime, I think
that I'll degenerate them to sane defaults for the initial submission
and figure out what interface makes sense afterwards.

Now that I have your attention ;)
I would love you to look at skb_copy_and_hash_datagram_iter as these
changes will require an ack from you.