fix #2942: implement lacp bond mode and bond_xmit_hash_policy

this was not yet implemented, should be compatible with pve and the gui

Signed-off-by: Dominik Csapak <d.csapak@proxmox.com>

src/config/network.rs

@@ -17,7 +17,7 @@ pub use lexer::*;
 mod parser;
 pub use parser::*;
 
-use crate::api2::types::{Interface, NetworkConfigMethod, NetworkInterfaceType, LinuxBondMode};
+use crate::api2::types::{Interface, NetworkConfigMethod, NetworkInterfaceType, LinuxBondMode, BondXmitHashPolicy};
 
 lazy_static!{
     static ref PHYSICAL_NIC_REGEX: Regex = Regex::new(r"^(?:eth\d+|en[^:.]+|ib\d+)$").unwrap();
@@ -44,6 +44,19 @@ pub fn bond_mode_to_str(mode: LinuxBondMode) -> &'static str {
     }
 }
 
+pub fn bond_xmit_hash_policy_from_str(s: &str) -> Result<BondXmitHashPolicy, Error> {
+    BondXmitHashPolicy::deserialize(s.into_deserializer())
+        .map_err(|_: value::Error| format_err!("invalid bond_xmit_hash_policy '{}'", s))
+}
+
+pub fn bond_xmit_hash_policy_to_str(policy: &BondXmitHashPolicy) -> &'static str {
+    match policy {
+        BondXmitHashPolicy::layer2 => "layer2",
+        BondXmitHashPolicy::layer2_3 => "layer2+3",
+        BondXmitHashPolicy::layer3_4 => "layer3+4",
+    }
+}
+
 impl Interface {
 
     pub fn new(name: String) -> Self {
@@ -68,6 +81,7 @@ impl Interface {
             slaves: None,
             bond_mode: None,
             bond_primary: None,
+            bond_xmit_hash_policy: None,
         }
     }
 
@@ -176,6 +190,14 @@ impl Interface {
                     }
                 }
 
+                if let Some(xmit_policy) = &self.bond_xmit_hash_policy {
+                    if mode == LinuxBondMode::ieee802_3ad ||
+                       mode == LinuxBondMode::balance_xor
+                    {
+                        writeln!(w, "\tbond_xmit_hash_policy {}", bond_xmit_hash_policy_to_str(xmit_policy))?;
+                    }
+                }
+
                 let slaves = self.slaves.as_ref().unwrap_or(&EMPTY_LIST);
                 if slaves.is_empty() {
                     writeln!(w, "\tbond-slaves none")?;

src/config/network/lexer.rs

@@ -27,6 +27,7 @@ pub enum Token {
     BondSlaves,
     BondMode,
     BondPrimary,
+    BondXmitHashPolicy,
     EOF,
 }
 
@@ -54,6 +55,8 @@ lazy_static! {
         map.insert("bond-mode", Token::BondMode);
         map.insert("bond-primary", Token::BondPrimary);
         map.insert("bond_primary", Token::BondPrimary);
+        map.insert("bond_xmit_hash_policy", Token::BondXmitHashPolicy);
+        map.insert("bond-xmit-hash-policy", Token::BondXmitHashPolicy);
         map
     };
 }

src/config/network/parser.rs

@@ -9,7 +9,7 @@ use regex::Regex;
 use super::helper::*;
 use super::lexer::*;
 
-use super::{NetworkConfig, NetworkOrderEntry, Interface, NetworkConfigMethod, NetworkInterfaceType, bond_mode_from_str};
+use super::{NetworkConfig, NetworkOrderEntry, Interface, NetworkConfigMethod, NetworkInterfaceType, bond_mode_from_str, bond_xmit_hash_policy_from_str};
 
 pub struct NetworkParser<R: BufRead> {
     input: Peekable<Lexer<R>>,
@@ -249,6 +249,12 @@ impl <R: BufRead> NetworkParser<R> {
                     interface.bond_primary = Some(primary);
                     self.eat(Token::Newline)?;
                 }
+                Token::BondXmitHashPolicy => {
+                    self.eat(Token::BondXmitHashPolicy)?;
+                    let policy = bond_xmit_hash_policy_from_str(&self.next_text()?)?;
+                    interface.bond_xmit_hash_policy = Some(policy);
+                    self.eat(Token::Newline)?;
+                }
                 Token::Netmask => bail!("netmask is deprecated and no longer supported"),
 
                 _ => { // parse addon attributes