On Wed, 18 Nov 2020 11:10:05 -0800 Wei Wang wrote:

+int napi_set_threaded(struct napi_struct *n, bool threaded)
+{
+	ASSERT_RTNL();
+
+	if (n->dev->flags & IFF_UP)
+		return -EBUSY;
+
+	if (threaded == !!test_bit(NAPI_STATE_THREADED, &n->state))
+		return 0;
+	if (threaded)
+		set_bit(NAPI_STATE_THREADED, &n->state);
+	else
+		clear_bit(NAPI_STATE_THREADED, &n->state);

Do we really need the per-NAPI control here? Does anyone have use cases
where that makes sense? The user would be guessing which NAPI means
which queue and which bit, currently.

+	/* if the device is initializing, nothing todo */
+	if (test_bit(__LINK_STATE_START, &n->dev->state))
+		return 0;
+
+	napi_thread_stop(n);
+	napi_thread_start(n);
+	return 0;
+}
+EXPORT_SYMBOL(napi_set_threaded);

Why was this exported? Do we still need that?

Please rejig the patches into a reviewable form. You can use the
Co-developed-by tag to give people credit on individual patches.