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Subject: [RFC PATCH v2] virtio-vsock: use C style defines for constants
This: 1) Replaces enums with C style defines. 2) Adds defines for some constants. --- virtio-vsock.tex | 46 ++++++++++++++++++++++++---------------------- 1 file changed, 24 insertions(+), 22 deletions(-) diff --git a/virtio-vsock.tex b/virtio-vsock.tex index da7e641..df0440a 100644 --- a/virtio-vsock.tex +++ b/virtio-vsock.tex @@ -86,23 +86,18 @@ \subsection{Device Operation}\label{sec:Device Types / Socket Device / Device Op operation constants: \begin{lstlisting} -enum { - VIRTIO_VSOCK_OP_INVALID = 0, - - /* Connect operations */ - VIRTIO_VSOCK_OP_REQUEST = 1, - VIRTIO_VSOCK_OP_RESPONSE = 2, - VIRTIO_VSOCK_OP_RST = 3, - VIRTIO_VSOCK_OP_SHUTDOWN = 4, - - /* To send payload */ - VIRTIO_VSOCK_OP_RW = 5, - - /* Tell the peer our credit info */ - VIRTIO_VSOCK_OP_CREDIT_UPDATE = 6, - /* Request the peer to send the credit info to us */ - VIRTIO_VSOCK_OP_CREDIT_REQUEST = 7, -}; +#define VIRTIO_VSOCK_OP_INVALID 0 +/* Connect operations */ +#define VIRTIO_VSOCK_OP_REQUEST 1 +#define VIRTIO_VSOCK_OP_RESPONSE 2 +#define VIRTIO_VSOCK_OP_RST 3 +#define VIRTIO_VSOCK_OP_SHUTDOWN 4 +/* To send payload */ +#define VIRTIO_VSOCK_OP_RW 5 +/* Tell the peer our credit info */ +#define VIRTIO_VSOCK_OP_CREDIT_UPDATE 6 +/* Request the peer to send the credit info to us */ +#define VIRTIO_VSOCK_OP_CREDIT_REQUEST 7 \end{lstlisting} \subsubsection{Virtqueue Flow Control}\label{sec:Device Types / Socket Device / Device Operation / Virtqueue Flow Control} @@ -140,8 +135,12 @@ \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 1 (VIRTIO_VSOCK_TYPE_STREAM) +for stream socket types. + +\begin{lstlisting} +#define VIRTIO_VSOCK_TYPE_STREAM 1 +\end{lstlisting} Stream sockets provide in-order, guaranteed, connection-oriented delivery without message boundaries. @@ -227,6 +226,11 @@ \subsubsection{Stream Sockets}\label{sec:Device Types / Socket Device / Device O hints are permanent once sent and successive packets with bits clear do not reset them. +\begin{lstlisting} +#define VIRTIO_VSOCK_SHUTDOWN_RECEIVE_BIT 0 +#define VIRTIO_VSOCK_SHUTDOWN_SEND_BIT 1 +\end{lstlisting} + The VIRTIO_VSOCK_OP_RST packet aborts the connection process or forcibly disconnects a connected socket. @@ -248,9 +252,7 @@ \subsubsection{Device Events}\label{sec:Device Types / Socket Device / Device Op The event buffer is as follows: \begin{lstlisting} -enum virtio_vsock_event_id { - VIRTIO_VSOCK_EVENT_TRANSPORT_RESET = 0, -}; +#define VIRTIO_VSOCK_EVENT_TRANSPORT_RESET 0 struct virtio_vsock_event { le32 id; -- 2.25.1
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