add missing documentation for various crates (#5950)

crates/net/dns/src/error.rs

@@ -3,38 +3,59 @@ use crate::tree::TreeRootEntry;
 /// Alias for a parse result
 pub(crate) type ParseEntryResult<T> = Result<T, ParseDnsEntryError>;
 
+/// Alias for lookup results
 pub(crate) type LookupResult<T> = Result<T, LookupError>;
 
 /// Error while parsing a [DnsEntry](crate::tree::DnsEntry)
 #[derive(thiserror::Error, Debug)]
-#[allow(missing_docs)]
 pub enum ParseDnsEntryError {
+    /// Unknown entry error.
     #[error("unknown entry: {0}")]
+    /// Indicates an unknown entry encountered during parsing.
     UnknownEntry(String),
+    /// Field not found error.
     #[error("field {0} not found")]
+    /// Indicates a field was not found during parsing.
     FieldNotFound(&'static str),
+    /// Base64 decoding error.
     #[error("base64 decoding failed: {0}")]
+    /// Indicates a failure during Base64 decoding.
     Base64DecodeError(String),
+    /// Base32 decoding error.
     #[error("base32 decoding failed: {0}")]
+    /// Indicates a failure during Base32 decoding.
     Base32DecodeError(String),
+    /// RLP decoding error.
     #[error("{0}")]
+    /// Indicates an error during RLP decoding.
     RlpDecodeError(String),
+    /// Invalid child hash error in a branch.
     #[error("invalid child hash in branch: {0}")]
+    /// Indicates an invalid child hash within a branch.
     InvalidChildHash(String),
+    /// Other error.
     #[error("{0}")]
+    /// Indicates other unspecified errors.
     Other(String),
 }
 
 /// Errors that can happen during lookups
 #[derive(thiserror::Error, Debug)]
-#[allow(missing_docs)]
 pub(crate) enum LookupError {
+    /// Parse error.
     #[error(transparent)]
+    /// Represents errors during parsing.
     Parse(#[from] ParseDnsEntryError),
+    /// Invalid root error.
     #[error("failed to verify root {0}")]
+    /// Indicates failure while verifying the root entry.
     InvalidRoot(TreeRootEntry),
+    /// Request timed out error.
     #[error("request timed out")]
+    /// Indicates a timeout occurred during the request.
     RequestTimedOut,
+    /// Entry not found error.
     #[error("entry not found")]
+    /// Indicates the requested entry was not found.
     EntryNotFound,
 }