feat(pool/encryption): add api messages

Signed-off-by: Diwakar Sharma <[email protected]>

apis/io-engine/protobuf/v1/common.proto

@@ -23,3 +23,31 @@ message MayastorBugFixes {
   // Nexus rebuilds both the clusters allocated to the replica and its ancestors clusters
   bool nexusRebuildReplicaAncestry = 1;
 }
+
+// Cipher to use for encryption.
+enum Cipher {
+  AES_CBC = 0;
+  AES_XTS = 1;
+}
+
+// Represents an encryption key that can be used to encrypt an
+// entity like pool or lvol/replica.
+message EncryptionKey {
+  // Name of the key.
+  string key_name = 1;
+  // The AES encryption key.
+  bytes key = 2;
+  // AES Key length.
+  uint32 key_length = 3;
+  // key2 (required for AES_XTS).
+  optional bytes key2 = 4;
+  // The length of key2. Must be same as key_length.
+  optional uint32 key2_length = 5;
+}
+
+message EncryptionInfo {
+  // Cipher to be used.
+  Cipher cipher = 1;
+  // The encryption key.
+  EncryptionKey key = 2;
+}

apis/io-engine/protobuf/v1/pool.proto

@@ -3,6 +3,7 @@ syntax = "proto3";
 
 import "google/protobuf/empty.proto";
 import "google/protobuf/wrappers.proto";
+import "common.proto";
 
 package mayastor.v1;
 
@@ -48,6 +49,8 @@ message CreatePoolRequest {
   optional uint32 cluster_size = 5;
   // Optional pool metadata arguments.
   optional PoolMetadataArgs md_args = 6;
+  // Encryption key for this pool.
+  optional EncryptionInfo enc_info = 7;
 }
 
 // Pool metadata arguments.
@@ -77,6 +80,8 @@ message ImportPoolRequest {
   google.protobuf.StringValue uuid = 2; // optional uuid for the pool to be imported
   repeated string disks = 3; // disk device paths or URIs to be claimed by the pool
   PoolType pooltype = 4;     // type of the pool
+  // Encryption key for this pool.
+  optional EncryptionInfo enc_info = 5;
 }
 
 // State of the storage pool (terminology comes from ZFS).

apis/io-engine/src/v1.rs

@@ -11,7 +11,7 @@ mod pb {
 }
 
 pub mod common {
-    pub use super::pb::ShareProtocol;
+    pub use super::pb::{Cipher, EncryptionInfo, EncryptionKey, ShareProtocol};
 }
 
 /// v1 version of bdev grpc API