Interleave sending and receiving of packets to reduce rx latency (#515)

* Interleave sending and receiving of packets to reduce latency in receiving of packets

* Add patch to CtapUsbSyscallDriver

* Minor tweaks from review

* Log when overwritting an existing reply

* Only log when 'debug_ctap' is enabled

* Make ctap mod public, as per review

* Rename send_or_recv to send_and_maybe_recv

* fix typo

* Don't process packets on other transport while doing keepalive

* Don't process packets on other transport while doing keepalive

* More accurately determine if reply has finished

* Move comment closer to appropriate location

* Add tests for canceling keepalive packets

* Added a TODO for kaczmarczyck re ctap module being public

* remove the unnecessary sleep()s

* undo messed up commit

* address pylint warnings

* Fix merge mess up, and patch fido2 Usage Page

* Fix up completely borked merge

* Remove patch to FIDO usage, after #523.

* remove obsolete aspects to diff

Co-authored-by: kaczmarczyck <43844792+kaczmarczyck@users.noreply.github.com>

src/env/tock/mod.rs

@@ -42,7 +42,7 @@ pub struct TockHidConnection {
 }
 
 impl HidConnection for TockHidConnection {
-    fn send_or_recv_with_timeout(
+    fn send_and_maybe_recv(
         &mut self,
         buf: &mut [u8; 64],
         timeout: Milliseconds<ClockInt>,
@@ -54,10 +54,8 @@ impl HidConnection for TockHidConnection {
         ) {
             Ok(usb_ctap_hid::SendOrRecvStatus::Timeout) => Ok(SendOrRecvStatus::Timeout),
             Ok(usb_ctap_hid::SendOrRecvStatus::Sent) => Ok(SendOrRecvStatus::Sent),
-            Ok(usb_ctap_hid::SendOrRecvStatus::Received(recv_endpoint))
-                if self.endpoint == recv_endpoint =>
-            {
-                Ok(SendOrRecvStatus::Received)
+            Ok(usb_ctap_hid::SendOrRecvStatus::Received(recv_endpoint)) => {
+                Ok(SendOrRecvStatus::Received(recv_endpoint))
             }
             _ => Err(SendOrRecvError),
         }