[RFC PATCH v1] virtio-vsock: use enums instead of hardcoded constants

[Arseny Krasnov <arseny.krasnov@kaspersky.com>]

This replaces constants defined in "bit X set to Y" manner
with enums from Linux kernel uapi headers.
---
 virtio-vsock.tex | 29 ++++++++++++++++++++++-------
 1 file changed, 22 insertions(+), 7 deletions(-)

diff --git a/virtio-vsock.tex b/virtio-vsock.tex
index da7e641..a97a81e 100644
--- a/virtio-vsock.tex
+++ b/virtio-vsock.tex
@@ -140,8 +140,14 @@ \subsubsection{Addressing}\label{sec:Device Types / Socket Device / Device Opera
 consists of a (cid, port number) tuple. The header fields used for this are
 \field{src_cid}, \field{src_port}, \field{dst_cid}, and \field{dst_port}.
 
-Currently only stream sockets are supported. \field{type} is 1 for stream
-socket types.
+Currently only stream sockets are supported. \field{type} is one of the
+following constants:
+
+\begin{lstlisting}
+enum virtio_vsock_type {
+	VIRTIO_VSOCK_TYPE_STREAM = 1,
+};
+\end{lstlisting}
 
 Stream sockets provide in-order, guaranteed, connection-oriented delivery
 without message boundaries.
@@ -221,11 +227,20 @@ \subsubsection{Stream Sockets}\label{sec:Device Types / Socket Device / Device O
 a listening socket does not exist on the destination or the destination has
 insufficient resources to establish the connection.
 
-When a connected socket receives VIRTIO_VSOCK_OP_SHUTDOWN the header
-\field{flags} field bit 0 indicates that the peer will not receive any more
-data and bit 1 indicates that the peer will not send any more data.  These
-hints are permanent once sent and successive packets with bits clear do not
-reset them.
+When a connected socket receives VIRTIO_VSOCK_OP_SHUTDOWN, header \field{flags}
+field is one of the following constants:
+
+\begin{lstlisting}
+enum virtio_vsock_shutdown {
+	VIRTIO_VSOCK_SHUTDOWN_RCV = 1,
+	VIRTIO_VSOCK_SHUTDOWN_SEND = 2,
+};
+\end{lstlisting}
+
+VIRTIO_VSOCK_SHUTDOWN_RCV indicates that the peer will not receive any more
+data and VIRTIO_VSOCK_SHUTDOWN_SEND indicates that the peer will not send
+any more data.  These hints are permanent once sent and successive packets
+with bits clear do not reset them.
 
 The VIRTIO_VSOCK_OP_RST packet aborts the connection process or forcibly
 disconnects a connected socket.
-- 
2.25.1