diff --git a/common/include/tfe_http.h b/common/include/tfe_http.h
index 33503a6..f6846a1 100644
--- a/common/include/tfe_http.h
+++ b/common/include/tfe_http.h
@@ -150,9 +150,8 @@ struct tfe_http_half_ops
 struct tfe_http_session_ops
 {
 	struct tfe_http_session * (* ops_allow_write)(const struct tfe_http_session * session);
-	void (* ops_detach)(struct tfe_http_session * session);
+	void (* ops_detach)(const struct tfe_http_session * session);
 	void (* ops_drop)(struct tfe_http_session * session);
-	void (* ops_passthrough)(struct tfe_http_session * session);
 
 	void (* ops_request_set)(struct tfe_http_session * session, struct tfe_http_half * req);
 	void (* ops_response_set)(struct tfe_http_session * session, struct tfe_http_half * resp);
@@ -277,7 +276,7 @@ static inline struct tfe_http_session * tfe_http_session_allow_write(const struc
 	return session->ops->ops_allow_write(session);
 }
 
-static inline void tfe_http_session_detach(struct tfe_http_session * session)
+static inline void tfe_http_session_detach(const struct tfe_http_session * session)
 {
 	return session->ops->ops_detach(session);
 }
@@ -287,11 +286,6 @@ static inline void tfe_http_session_drop(struct tfe_http_session * session)
 	return session->ops->ops_drop(session);
 }
 
-static inline void tfe_http_session_passthrough(struct tfe_http_session * session)
-{
-	return session->ops->ops_passthrough(session);
-}
-
 static inline void tfe_http_session_request_set(struct tfe_http_session * session, struct tfe_http_half * req)
 {
 	return session->ops->ops_request_set(session, req);