Add UpdateError::RollbackProtection

Use hubtools 0.4.6 until release engineering tools handle epoch
management.

Update the UpdateError enum serialization tests to cover recent additions.

Author: lzrd

Cargo.lock

@@ -15,7 +15,7 @@ resolver = "2"
 
 [workspace.dependencies]
 tlvc = { git = "https://github.com/oxidecomputer/tlvc.git", branch = "main" }
-hubtools = { git = "https://github.com/oxidecomputer/hubtools.git", branch = "main"}
+hubtools = { version = "0.4.6", git = "https://github.com/oxidecomputer/hubtools.git" }
 slog-error-chain = { git = "https://github.com/oxidecomputer/slog-error-chain.git", branch = "main", features = ["derive"] }
 
 anyhow = "1.0"

Cargo.toml

@@ -1170,6 +1170,7 @@ pub enum UpdateError {
     ImageMismatch,
     SignatureNotValidated,
     VersionNotSupported,
+    RollbackProtection,
 }
 
 impl fmt::Display for UpdateError {
@@ -1229,6 +1230,9 @@ impl fmt::Display for UpdateError {
             Self::InvalidComponent => {
                 write!(f, "invalid component for operation")
             }
+            Self::RollbackProtection => {
+                write!(f, "invalid epoch compared to active image")
+            }
         }
     }
 }

gateway-messages/src/sp_to_mgs.rs

@@ -21,6 +21,7 @@ mod v13;
 mod v14;
 mod v15;
 mod v16;
+mod v17;
 
 pub fn assert_serialized(
     out: &mut [u8],

gateway-messages/tests/versioning/mod.rs

@@ -0,0 +1,19 @@
+use super::assert_serialized;
+use gateway_messages::SerializedSize;
+use gateway_messages::SpResponse;
+use gateway_messages::UpdateError;
+
+#[test]
+fn error_enums() {
+    let mut out = [0; SpResponse::MAX_SIZE];
+
+    let response: [UpdateError; 5] = [
+        UpdateError::InvalidArchive,
+        UpdateError::ImageMismatch,
+        UpdateError::SignatureNotValidated,
+        UpdateError::VersionNotSupported,
+        UpdateError::RollbackProtection,
+    ];
+    let expected = vec![30, 31, 32, 33, 34];
+    assert_serialized(&mut out, &expected, &response);
+}