CIFS: Add echo request support for SMB2

Signed-off-by: Pavel Shilovsky <piastryyy@gmail.com>
Signed-off-by: Steve French <smfrench@gmail.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 8672e49d1c4c..483bd0ba2ecb 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -207,6 +207,12 @@ smb2_build_path_to_root(struct smb_vol *vol, struct cifs_sb_info *cifs_sb,
         return NULL;
 }
 
+static bool
+smb2_can_echo(struct TCP_Server_Info *server)
+{
+        return server->echoes;
+}
+
 struct smb_version_operations smb21_operations = {
         .setup_request = smb2_setup_request,
         .setup_async_request = smb2_setup_async_request,
@@ -226,6 +232,8 @@ struct smb_version_operations smb21_operations = {
         .tree_connect = SMB2_tcon,
         .tree_disconnect = SMB2_tdis,
         .is_path_accessible = smb2_is_path_accessible,
+        .can_echo = smb2_can_echo,
+        .echo = SMB2_echo,
         .query_path_info = smb2_query_path_info,
         .get_srv_inum = smb2_get_srv_inum,
         .build_path_to_root = smb2_build_path_to_root,