Refactor(netlink): Replaces zerocopy with bytemuck

Migrates from `zerocopy` to `bytemuck` for improved data serialization and deserialization in netlink communication. This enhances maintainability.

Cargo.lock

@@ -72,6 +72,26 @@ version = "2.11.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "843867be96c8daad0d758b57df9392b6d8d271134fce549de6ce169ff98a92af"
 
+[[package]]
+name = "bytemuck"
+version = "1.25.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c8efb64bd706a16a1bdde310ae86b351e4d21550d98d056f22f8a7f7a2183fec"
+dependencies = [
+ "bytemuck_derive",
+]
+
+[[package]]
+name = "bytemuck_derive"
+version = "1.10.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f9abbd1bc6865053c427f7198e6af43bfdedc55ab791faed4fbd361d789575ff"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "byteorder"
 version = "1.5.0"
@@ -766,6 +786,7 @@ name = "sqm-autorate-rust"
 version = "0.2.0"
 dependencies = [
  "anyhow",
+ "bytemuck",
  "icmp-socket",
  "log",
  "neli",
@@ -774,8 +795,6 @@ dependencies = [
  "rustix",
  "thiserror",
  "time",
- "zerocopy",
- "zerocopy-derive",
 ]
 
 [[package]]
@@ -1169,26 +1188,6 @@ dependencies = [
  "wasmparser",
 ]
 
-[[package]]
-name = "zerocopy"
-version = "0.8.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "db6d35d663eadb6c932438e763b262fe1a70987f9ae936e60158176d710cae4a"
-dependencies = [
- "zerocopy-derive",
-]
-
-[[package]]
-name = "zerocopy-derive"
-version = "0.8.39"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4122cd3169e94605190e77839c9a40d40ed048d305bfdc146e7df40ab0f3e517"
-dependencies = [
- "proc-macro2",
- "quote",
- "syn",
-]
-
 [[package]]
 name = "zmij"
 version = "1.0.21"

Cargo.toml

@@ -20,14 +20,13 @@ strip = "symbols"
 
 [dependencies]
 anyhow = "1.0"
+bytemuck = { version = "1.25.0", features = ["derive"] }
 icmp-socket = "0.4.0"
 neli = "0.7"
 rand = "0.10"
 rustix = { version = "1.1", features = ["fs", "thread", "time"] }
 rust-uci = { version = "0.1", optional = true }
 thiserror = "2.0"
-zerocopy = "0.8.39"
-zerocopy-derive = "0.8.39"
 
 [dependencies.log]
 features = ["std"]

src/netlink.rs

@@ -1,3 +1,5 @@
+use bytemuck::AnyBitPattern;
+use bytemuck::checked::{CheckedCastError, try_from_bytes};
 use neli::consts::nl::NlmF;
 use neli::consts::rtnl::{Arphrd, Iff, Ifla, RtAddrFamily, Rtm, Tca};
 use neli::consts::socket::NlFamily;
@@ -10,13 +12,11 @@ use neli::utils::Groups;
 use std::io;
 use std::str::Utf8Error;
 use thiserror::Error;
-use zerocopy::FromBytes;
-use zerocopy_derive::{FromBytes, Immutable, KnownLayout};
 
 #[derive(Debug, Error)]
 pub enum NetlinkError {
     #[error("Couldn't deserialize to struct: {0}")]
-    Deserialization(String),
+    Deserialization(CheckedCastError),
 
     #[error("Couldn't find intreface `{0}`")]
     InterfaceNotFound(String),
@@ -52,7 +52,7 @@ pub struct Qdisc {
     parent: u32,
 }
 
-#[derive(Copy, Clone, Default, Debug, FromBytes, Immutable, KnownLayout)]
+#[derive(AnyBitPattern, Copy, Clone, Default, Debug)]
 #[repr(C)]
 pub struct RtnlLinkStats64 {
     pub rx_packets: u64,
@@ -172,10 +172,10 @@ impl Netlink {
                 for attr in p.rtattrs().iter() {
                     if attr.rta_type() == &Ifla::Stats64 {
                         let buf = attr.rta_payload().as_ref();
-                        let stats = RtnlLinkStats64::read_from_bytes(buf)
+                        let stats: &RtnlLinkStats64 = try_from_bytes::<RtnlLinkStats64>(buf)
-                            .map_err(|e| NetlinkError::Deserialization(e.to_string()))?;
+                            .map_err(|e| NetlinkError::Deserialization(e))?;
 
-                        return Ok(stats);
+                        return Ok(stats.clone());
                     }
                 }
             }