protocols: Advertise support for attestation protocol

Handle attestation protocol requests in handle_request().

Make the CORE_QUERY_PROTOCOL return supported versions (1) of the
attestation protocol (1).

Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>

Author: dubek

src/protocols/core.rs

@@ -42,10 +42,14 @@ impl VersionInfo {
     funcs!(max, u32);
 }
 
-static PROTOCOL_INFO: [VersionInfo; 1] = [VersionInfo { min: 1, max: 1 }];
+static PROTOCOL_INFO: [VersionInfo; 2] = [
+    VersionInfo { min: 1, max: 1 },
+    VersionInfo { min: 1, max: 1 },
+];
 
 pub enum ProtocolId {
     ProtocolId0,
+    ProtocolId1,
 
     MaxProtocolId,
 }

src/protocols/mod.rs

@@ -20,3 +20,5 @@ pub use crate::protocols::services_manifest::*;
 
 /// 0
 pub const SVSM_CORE_PROTOCOL: u32 = ProtocolId::ProtocolId0 as u32;
+/// 1
+pub const SVSM_ATTESTATION_PROTOCOL: u32 = ProtocolId::ProtocolId1 as u32;

src/svsm_request.rs

@@ -28,6 +28,7 @@ unsafe fn handle_request(vmsa: *mut Vmsa) {
 
     match protocol {
         SVSM_CORE_PROTOCOL => core_handle_request(callid, vmsa),
+        SVSM_ATTESTATION_PROTOCOL => attestation_handle_request(callid, vmsa),
         _ => (*vmsa).set_rax(SVSM_ERR_UNSUPPORTED_PROTOCOL),
     }
 }