add: packetOut event and payload

src/openflow/events/flow_mod/flow_actions.rs

@@ -28,7 +28,7 @@ pub enum FlowAction {
 }
 
 impl FlowAction {
-   pub fn to_action_code(&self) -> FlowActionType {
+    pub fn to_action_code(&self) -> FlowActionType {
         match self {
             FlowAction::Oputput(_) => FlowActionType::Output,
             FlowAction::SetDlVlan(_) => FlowActionType::SetVlanId,
@@ -202,6 +202,31 @@ impl FlowAction {
     }
 }
 
+pub trait SizeCheck {
+    fn size_of_sequence(&self) -> usize;
+    fn move_controller_last(&self) -> Vec<FlowAction>;
+}
+
+impl SizeCheck for Vec<FlowAction> {
+    fn size_of_sequence(&self) -> usize {
+        self.iter().fold(0, |acc, x| x.length() + acc)
+    }
+
+    fn move_controller_last(&self) -> Vec<FlowAction> {
+        let mut not_ctrl: Vec<FlowAction> = Vec::new();
+        let mut is_ctrl: Vec<FlowAction> = Vec::new();
+        for act in self {
+            match act {
+                FlowAction::Oputput(PseudoPort::Controller(_)) => {
+                    is_ctrl.push(act.clone());
+                }
+                _ => not_ctrl.push(act.clone()),
+            }
+        }
+        not_ctrl.append(&mut is_ctrl);
+        not_ctrl
+    }
+}
 
 impl Clone for FlowAction {
     fn clone(&self) -> Self {
@@ -220,4 +245,4 @@ impl Clone for FlowAction {
             Self::Unparsable => Self::Unparsable,
         }
     }
-}
\ No newline at end of file
+}

src/openflow/events/flow_mod/flow_mod_handler.rs

@@ -7,7 +7,7 @@ use crate::openflow::{
     OfpPort, PseudoPort,
 };
 
-use super::{FlowAction, FlowModCommand, MatchFields};
+use super::{FlowAction, FlowModCommand, MatchFields, SizeCheck};
 
 pub enum Timeout {
     Permanent,
@@ -58,20 +58,6 @@ impl FlowModEvent {
             check_overlap: false,
         }
     }
-    pub fn get_controller_last(&self) -> Vec<FlowAction> {
-        let mut not_ctrl: Vec<FlowAction> = Vec::new();
-        let mut is_ctrl: Vec<FlowAction> = Vec::new();
-        for act in &self.actions {
-            match act {
-                FlowAction::Oputput(PseudoPort::Controller(_)) => {
-                    is_ctrl.push(act.clone());
-                }
-                _ => not_ctrl.push(act.clone()),
-            }
-        }
-        not_ctrl.append(&mut is_ctrl);
-        not_ctrl
-    }
 
     pub fn parse(buf: &[u8]) -> FlowModEvent {
         let mut bytes = Cursor::new(buf.to_vec());
@@ -135,7 +121,7 @@ impl MessageMarshal for FlowModEvent {
             (if self.check_overlap { 1 << 1 } else { 0 })
                 | (if self.notify_when_removed { 1 << 0 } else { 0 }),
         );
-        for act in self.get_controller_last() {
+        for act in self.actions.move_controller_last() {
             match act {
                 FlowAction::Oputput(PseudoPort::Table) => {
                     panic!("Openflow table not allowed")

src/openflow/events/flow_mod/mod.rs

@@ -5,11 +5,10 @@ pub mod command;
 pub use command::FlowModCommand;
 
 pub mod flow_actions;
-pub use flow_actions::FlowAction;
+pub use flow_actions::{FlowAction, SizeCheck};
 
 pub mod flow_actions_type;
 pub use flow_actions_type::FlowActionType;
 
 pub mod match_fields;
 pub use match_fields::{Mask, MatchFields};
-

src/openflow/events/mod.rs

@@ -2,6 +2,7 @@ pub mod packet_in;
 pub use packet_in::{PacketInEvent, PacketInReason};
 
 pub mod packet_out;
+pub use packet_out::PacketOutEvent;
 
 pub mod flow_mod;
 pub use flow_mod::{FlowAction, FlowModEvent};
@@ -13,4 +14,4 @@ pub mod features_req;
 pub use features_req::FeaturesReq;
 
 pub mod payload;
-pub use payload::Payload;
\ No newline at end of file
+pub use payload::Payload;

src/openflow/events/packet_out.rs

-use super::Payload;
+use std::io::{BufRead, Cursor, Read};
+
+use byteorder::{BigEndian, ReadBytesExt, WriteBytesExt};
+
+use crate::openflow::{OfpPort, PseudoPort};
+
+use super::{flow_mod::SizeCheck, FlowAction, Payload};
 
 pub struct PacketOutEvent {
-    pub payload: Payload
-}
\ No newline at end of file
+    pub payload: Payload,
+    pub port_id: Option<u16>,
+    pub actions: Vec<FlowAction>,
+}
+
+impl PacketOutEvent {
+    pub fn parse(buf: &Vec<u8>) -> Self {
+        let mut bytes = Cursor::new(buf);
+        let buf_id = match bytes
+            .read_i32::<BigEndian>()
+            .expect("cannot parse buf id in packetout")
+        {
+            -1 => None,
+            n => Some(n),
+        };
+        let in_port = bytes.read_u16::<BigEndian>().unwrap();
+        let action_len = bytes.read_u16::<BigEndian>().unwrap();
+        let mut actions_buf = vec![0; action_len as usize];
+        let _ = bytes.read_exact(&mut actions_buf);
+        let mut action_bytes = Cursor::new(actions_buf);
+        let actions = FlowAction::parse_sequence(&mut action_bytes);
+        Self {
+            payload: match buf_id {
+                None => Payload::NoBuffered(bytes.fill_buf().unwrap().to_vec()),
+                Some(n) => {
+                    Payload::Buffered(n as u32, bytes.fill_buf().unwrap().to_ascii_lowercase())
+                }
+            },
+            port_id: {
+                if in_port == OfpPort::None as u16 {
+                    None
+                } else {
+                    Some(in_port)
+                }
+            },
+            actions,
+        }
+    }
+
+    pub fn marshal(&self, bytes: &mut Vec<u8>) {
+        let _ = bytes.write_i32::<BigEndian>(match self.payload {
+            Payload::Buffered(n, _) => n as i32,
+            Payload::NoBuffered(_) => -1,
+        });
+        match self.port_id {
+            Some(id) => {
+                PseudoPort::PhysicalPort(id).marshal(bytes);
+            }
+            None => {
+                let _ = bytes.write_u16::<BigEndian>(OfpPort::None as u16);
+            }
+        }
+        let _ = bytes.write_u16::<BigEndian>(self.actions.size_of_sequence() as u16);
+        for act in self.actions.move_controller_last() {
+            act.marshal(bytes);
+        }
+        self.payload.marshal(bytes);
+    }
+}

src/openflow/events/payload.rs

+use std::io::Write;
+
 pub enum Payload {
     Buffered(u32, Vec<u8>),
     NoBuffered(Vec<u8>),
 }
+
+impl Payload {
+    pub fn marshal(&self, bytes: &mut Vec<u8>) {
+        match self {
+            Payload::Buffered(_, buf) | Payload::NoBuffered(buf) => {
+                let _ = bytes.write_all(&buf);
+            }
+        }
+    }
+}