ceph: fix up unexpected message handling

Fix skipping of unexpected message types from osd, mon.

Clean up pr_info and debug output.
Signed-off-by: Sage Weil <sage@newdream.net>

fs/ceph/messenger.c

@@ -1361,7 +1361,7 @@ static int read_partial_message(struct ceph_connection *con)
 		con->in_msg = ceph_alloc_msg(con, &con->in_hdr, &skip);
 		if (skip) {
 			/* skip this message */
-			pr_err("alloc_msg returned NULL, skipping message\n");
+			dout("alloc_msg returned NULL, skipping message\n");
 			con->in_base_pos = -front_len - middle_len - data_len -
 				sizeof(m->footer);
 			con->in_tag = CEPH_MSGR_TAG_READY;
@@ -1370,7 +1370,8 @@ static int read_partial_message(struct ceph_connection *con)
 		if (IS_ERR(con->in_msg)) {
 			ret = PTR_ERR(con->in_msg);
 			con->in_msg = NULL;
-			con->error_msg = "error allocating memory for incoming message";
+			con->error_msg =
+				"error allocating memory for incoming message";
 			return ret;
 		}
 		m = con->in_msg;

fs/ceph/mon_client.c

@@ -763,7 +763,7 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
 	struct ceph_mon_client *monc = con->private;
 	int type = le16_to_cpu(hdr->type);
 	int front_len = le32_to_cpu(hdr->front_len);
-	struct ceph_msg *m;
+	struct ceph_msg *m = NULL;
 
 	*skip = 0;
 
@@ -777,13 +777,17 @@ static struct ceph_msg *mon_alloc_msg(struct ceph_connection *con,
 	case CEPH_MSG_AUTH_REPLY:
 		m = ceph_msgpool_get(&monc->msgpool_auth_reply, front_len);
 		break;
-	default:
-		return NULL;
+	case CEPH_MSG_MON_MAP:
+	case CEPH_MSG_MDS_MAP:
+	case CEPH_MSG_OSD_MAP:
+		m = ceph_msg_new(type, front_len, 0, 0, NULL);
+		break;
 	}
 
-	if (!m)
+	if (!m) {
+		pr_info("alloc_msg unknown type %d\n", type);
 		*skip = 1;
-
+	}
 	return m;
 }
 

fs/ceph/osd_client.c

@@ -1396,31 +1396,30 @@ static void dispatch(struct ceph_connection *con, struct ceph_msg *msg)
 	ceph_msg_put(msg);
 }
 
-static struct ceph_msg *alloc_msg(struct ceph_connection *con,
+/*
+ * lookup and return message for incoming reply
+ */
+static struct ceph_msg *get_reply(struct ceph_connection *con,
 				  struct ceph_msg_header *hdr,
 				  int *skip)
 {
 	struct ceph_osd *osd = con->private;
 	struct ceph_osd_client *osdc = osd->o_osdc;
-	int type = le16_to_cpu(hdr->type);
-	int front = le32_to_cpu(hdr->front_len);
-	int data_len = le32_to_cpu(hdr->data_len);
 	struct ceph_msg *m;
 	struct ceph_osd_request *req;
+	int front = le32_to_cpu(hdr->front_len);
+	int data_len = le32_to_cpu(hdr->data_len);
 	u64 tid;
 	int err;
 
-	*skip = 0;
-	if (type != CEPH_MSG_OSD_OPREPLY)
-		return NULL;
-
 	tid = le64_to_cpu(hdr->tid);
 	mutex_lock(&osdc->request_mutex);
 	req = __lookup_request(osdc, tid);
 	if (!req) {
 		*skip = 1;
 		m = NULL;
-		dout("alloc_msg unknown tid %llu\n", tid);
+		pr_info("alloc_msg unknown tid %llu from osd%d\n", tid,
+			osd->o_osd);
 		goto out;
 	}
 	m = __get_next_reply(con, req, front);
@@ -1437,11 +1436,33 @@ static struct ceph_msg *alloc_msg(struct ceph_connection *con,
 			m = ERR_PTR(err);
 		}
 	}
+	*skip = 0;
 
 out:
 	mutex_unlock(&osdc->request_mutex);
-
 	return m;
+
+}
+
+static struct ceph_msg *alloc_msg(struct ceph_connection *con,
+				  struct ceph_msg_header *hdr,
+				  int *skip)
+{
+	struct ceph_osd *osd = con->private;
+	int type = le16_to_cpu(hdr->type);
+	int front = le32_to_cpu(hdr->front_len);
+
+	switch (type) {
+	case CEPH_MSG_OSD_MAP:
+		return ceph_msg_new(type, front, 0, 0, NULL);
+	case CEPH_MSG_OSD_OPREPLY:
+		return get_reply(con, hdr, skip);
+	default:
+		pr_info("alloc_msg unexpected msg type %d from osd%d\n", type,
+			osd->o_osd);
+		*skip = 1;
+		return NULL;
+	}
 }
 
 /*