add action oxm and others

src/etherparser/net/mac_address.rs

 use byteorder::WriteBytesExt;
 
+#[derive(Clone)]
 pub struct MacAddr {
     mac: [u8; 6],
 }

src/openflow/ofp13/events/flow_mod/instructions.rs

+use crate::openflow::ofp13::Action;
+
+#[repr(u16)]
+pub enum InstructType {
+    GotoTable = 1,
+    WriteMetadata = 2,
+    WriteActions = 3,
+    ApplyActions = 4,
+    ClearActions = 5,
+    Meter = 6,
+    Experimenter = 0xffff,
+}
+
+impl From<InstructType> for u16 {
+    fn from(value: InstructType) -> Self {
+        value as u16
+    }
+}
+
+pub struct GotoTable {
+    typ: InstructType,
+    len: u16,
+    table_id: u8,
+    pad: [u8; 3],
+}
+
+pub struct WriteMetadata {
+    typ: InstructType,
+    len: u16,
+    pad: [u8; 4],
+    metadata: u64,
+    meta_mask: u64,
+}
+
+pub struct InstructActions {
+    typ: InstructType,
+    len: u16,
+    pad: [u8; 4],
+    action_header: Vec<Action>,
+}

src/openflow/ofp13/events/flow_mod/match_fields.rs

@@ -76,7 +76,7 @@ pub struct OxmHeader {
 }
 
 impl OxmHeader {
-    fn new(field: OxmMatchFields, size: u8) -> Self {
+    pub fn new(field: OxmMatchFields, size: u8) -> Self {
         Self {
             class: OxmClass::OpenflowBasic,
             field,
@@ -85,7 +85,7 @@ impl OxmHeader {
             experimenter: None,
         }
     }
-    fn marshal(&self, bytes: &mut Vec<u8>) {
+    pub fn marshal(&self, bytes: &mut Vec<u8>) {
         bytes.write_u16::<BigEndian>(self.class.clone().into());
         let field: u8 = self.field.clone().into();
         bytes.write_u8(field << 1 | if self.hasmask { 1 } else { 0 });

src/openflow/ofp13/events/flow_mod/mod.rs

@@ -9,3 +9,5 @@ pub use match_fields::{Mask, MatchFields};
 
 pub mod flow_mod_flags;
 pub use flow_mod_flags::FlowModFlags;
+
+pub mod instructions;
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