Store decoded MSI info instead of full capability in PciFeatureInfo

pcid/src/driver_handler.rs

@@ -199,7 +199,11 @@ impl DriverHandler {
                             .iter()
                             .find_map(|capability| capability.as_msi())
                         {
-                            PciFeatureInfo::Msi(*info)
+                            PciFeatureInfo::Msi(msi::MsiInfo {
+                                log2_multiple_message_capable: info.multi_message_capable(),
+                                is_64bit: info.has_64_bit_addr(),
+                                has_per_vector_masking: info.is_pvt_capable(),
+                            })
                         } else {
                             return PcidClientResponse::Error(
                                 PcidServerResponseError::NonexistentFeature(feature),

pcid/src/driver_interface/mod.rs

@@ -132,7 +132,7 @@ impl PciFeature {
 }
 #[derive(Debug, Serialize, Deserialize)]
 pub enum PciFeatureInfo {
-    Msi(msi::MsiCapability),
+    Msi(msi::MsiInfo),
     MsiX(msi::MsixInfo),
 }
 

pcid/src/pci/msi.rs

@@ -23,6 +23,13 @@ impl MsiAddrAndData {
     }
 }
 
+#[derive(Debug, Serialize, Deserialize)]
+pub struct MsiInfo {
+    pub log2_multiple_message_capable: u8,
+    pub is_64bit: bool,
+    pub has_per_vector_masking: bool,
+}
+
 impl MsiCapability {
     pub const MC_PVT_CAPABLE_BIT: u16 = 1 << 8;
     pub const MC_64_BIT_ADDR_BIT: u16 = 1 << 7;