libceph: don't pass result into ac->ops->handle_reply()

There is no result to pass in msgr2 case because authentication
failures are reported through auth_bad_method frame and in MAuth
case an error is returned immediately.

Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>

Author: idryomov

include/linux/ceph/auth.h

@@ -50,7 +50,7 @@ struct ceph_auth_client_ops {
 	 * another request.
 	 */
 	int (*build_request)(struct ceph_auth_client *ac, void *buf, void *end);
-	int (*handle_reply)(struct ceph_auth_client *ac, int result,
+	int (*handle_reply)(struct ceph_auth_client *ac,
 			    void *buf, void *end, u8 *session_key,
 			    int *session_key_len, u8 *con_secret,
 			    int *con_secret_len);

net/ceph/auth.c

@@ -260,14 +260,19 @@ int ceph_handle_auth_reply(struct ceph_auth_client *ac,
 		ac->negotiating = false;
 	}
 
-	ret = ac->ops->handle_reply(ac, result, payload, payload_end,
+	if (result) {
+		pr_err("auth protocol '%s' mauth authentication failed: %d\n",
+		       ceph_auth_proto_name(ac->protocol), result);
+		ret = result;
+		goto out;
+	}
+
+	ret = ac->ops->handle_reply(ac, payload, payload_end,
 				    NULL, NULL, NULL, NULL);
 	if (ret == -EAGAIN) {
 		ret = build_request(ac, true, reply_buf, reply_len);
 		goto out;
 	} else if (ret) {
-		pr_err("auth protocol '%s' mauth authentication failed: %d\n",
-		       ceph_auth_proto_name(ac->protocol), result);
 		goto out;
 	}
 
@@ -480,7 +485,7 @@ int ceph_auth_handle_reply_more(struct ceph_auth_client *ac, void *reply,
 	int ret;
 
 	mutex_lock(&ac->mutex);
-	ret = ac->ops->handle_reply(ac, 0, reply, reply + reply_len,
+	ret = ac->ops->handle_reply(ac, reply, reply + reply_len,
 				    NULL, NULL, NULL, NULL);
 	if (ret == -EAGAIN)
 		ret = build_request(ac, false, buf, buf_len);
@@ -498,7 +503,7 @@ int ceph_auth_handle_reply_done(struct ceph_auth_client *ac,
 	int ret;
 
 	mutex_lock(&ac->mutex);
-	ret = ac->ops->handle_reply(ac, 0, reply, reply + reply_len,
+	ret = ac->ops->handle_reply(ac, reply, reply + reply_len,
 				    session_key, session_key_len,
 				    con_secret, con_secret_len);
 	if (!ret)

net/ceph/auth_none.c

@@ -69,15 +69,15 @@ static int build_request(struct ceph_auth_client *ac, void *buf, void *end)
  * the generic auth code decode the global_id, and we carry no actual
  * authenticate state, so nothing happens here.
  */
-static int handle_reply(struct ceph_auth_client *ac, int result,
+static int handle_reply(struct ceph_auth_client *ac,
 			void *buf, void *end, u8 *session_key,
 			int *session_key_len, u8 *con_secret,
 			int *con_secret_len)
 {
 	struct ceph_auth_none_info *xi = ac->private;
 
 	xi->starting = false;
-	return result;
+	return 0;
 }
 
 static void ceph_auth_none_destroy_authorizer(struct ceph_authorizer *a)

net/ceph/auth_x.c

@@ -661,21 +661,19 @@ static int handle_auth_session_key(struct ceph_auth_client *ac,
 	return -EINVAL;
 }
 
-static int ceph_x_handle_reply(struct ceph_auth_client *ac, int result,
+static int ceph_x_handle_reply(struct ceph_auth_client *ac,
 			       void *buf, void *end,
 			       u8 *session_key, int *session_key_len,
 			       u8 *con_secret, int *con_secret_len)
 {
 	struct ceph_x_info *xi = ac->private;
 	struct ceph_x_ticket_handler *th;
 	int len = end - buf;
+	int result;
 	void *p;
 	int op;
 	int ret;
 
-	if (result)
-		return result;  /* XXX hmm? */
-
 	if (xi->starting) {
 		/* it's a hello */
 		struct ceph_x_server_challenge *sc = buf;