tenjin_sdn/openflow/ofp13/
message.rs

1//! OpenFlow 1.3 Message Types
2//!
3//! This module defines the message types used in OpenFlow 1.3 protocol communication.
4//! OpenFlow 1.3 introduces several new message types and features compared to 1.0,
5//! including support for multiple tables, groups, meters, and enhanced statistics.
6
7use std::mem::transmute;
8
9/// Represents all possible OpenFlow 1.3 message types
10///
11/// Each variant corresponds to a specific message type in the OpenFlow 1.3 protocol.
12/// The values match the official OpenFlow 1.3 specification message type codes.
13#[repr(u8)]
14#[derive(Clone)]
15pub enum Msg {
16    /// Initial handshake message
17    Hello = 0,
18    /// Error notification message
19    Error = 1,
20    /// Echo request for connection testing
21    EchoRequest = 2,
22    /// Echo reply for connection testing
23    EchoReply = 3,
24    /// Experimenter-specific message
25    Experimenter = 4,
26    /// Request switch features
27    FeaturesRequest = 5,
28    /// Switch features reply
29    FeaturesReply = 6,
30    /// Request switch configuration
31    ConfigRequest = 7,
32    /// Switch configuration reply
33    ConfigReply = 8,
34    /// Set switch configuration
35    SetConfig = 9,
36    /// Packet received by switch
37    PacketIn = 10,
38    /// Flow removed notification
39    FlowRemove = 11,
40    /// Port status change notification
41    PortStatus = 12,
42    /// Packet to be sent by switch
43    PacketOut = 13,
44    /// Flow table modification
45    FlowMod = 14,
46    /// Group table modification
47    GroupMod = 15,
48    /// Port configuration modification
49    PortMod = 16,
50    /// Table configuration modification
51    TableMod = 17,
52    /// Multipart message request
53    MultipartRequest = 18,
54    /// Multipart message reply
55    MultipartReply = 19,
56    /// Request to ensure all previous messages are processed
57    BarrierRequest = 20,
58    /// Barrier reply confirmation
59    BarrierReply = 21,
60    /// Get configuration request
61    GetConfigRequest = 22,
62    /// Get configuration reply
63    GetConfigReply = 23,
64    /// Controller role request
65    RoleRequest = 24,
66    /// Controller role reply
67    RoleReply = 25,
68    /// Get asynchronous message configuration request
69    GetAsyncRequest = 26,
70    /// Get asynchronous message configuration reply
71    GetAsyncReply = 27,
72    /// Set asynchronous message configuration
73    SetAsync = 28,
74    /// Meter table modification
75    MeterMod = 29,
76    /// Unknown or unsupported message type
77    NotFound = 0xff,
78}
79
80impl Msg {
81    /// Converts the message type to its corresponding integer value
82    pub fn to_int(&self) -> u8 {
83        self.clone().into()
84    }
85
86    /// Creates a message type from an integer value
87    ///
88    /// # Arguments
89    /// * `msg_code` - The integer code representing the message type
90    ///
91    /// # Returns
92    /// The corresponding Msg enum variant, or NotFound if the code is invalid
93    pub fn from(msg_code: u8) -> Self {
94        if msg_code > 21 {
95            return Self::NotFound;
96        }
97        unsafe { transmute::<u8, Msg>(msg_code) }
98    }
99}
100
101/// Implementation of From trait to convert Msg to u8
102impl From<Msg> for u8 {
103    fn from(value: Msg) -> Self {
104        value as u8
105    }
106}
tenjin_sdn/openflow/ofp13/message.rs

tenjin_sdn/openflow/ofp13/
message.rs
