From: Sage Weil <sage@newdream.net>
Date: Wed, 22 Jul 2009 18:25:51 +0000 (-0700)
Subject: kclient: msgr cleanup
X-Git-Tag: v0.11~3
X-Git-Url: http://git-server-git.apps.pok.os.sepia.ceph.com/?a=commitdiff_plain;h=ea54a6a20749328be75709fd13157ec46dbf1973;p=ceph.git

kclient: msgr cleanup
---

diff --git a/src/kernel/messenger.c b/src/kernel/messenger.c
index 845faf2a3ea2..a9d71458864c 100644
--- a/src/kernel/messenger.c
+++ b/src/kernel/messenger.c
@@ -11,6 +11,27 @@
 #include "super.h"
 #include "messenger.h"
 
+/*
+ * Ceph uses the messenger to exchange ceph_msg messages with other
+ * hosts in the system.  The messenger provides ordered and reliable
+ * delivery.  It tolerates TCP disconnects by reconnecting (with
+ * exponential backoff) in the case of a fault (disconnection, bad
+ * crc, protocol error).  Acks allow sent messages to be discarded by
+ * the sender.
+ *
+ * The network topology is flat: there is no "client" or "server," and
+ * any node can initiate a connection (i.e., send messages) to any
+ * other node.  There is a fair bit of complexity to handle the
+ * "connection race" case where two nodes are simultaneously
+ * connecting to each other so that the end result is a single
+ * session.
+ *
+ * The messenger can also send messages in "lossy" mode, where there
+ * is no error recovery or connect retry... the message is just
+ * dropped if something goes wrong.
+ */
+
+
 /* static tag bytes (protocol control messages) */
 static char tag_msg = CEPH_MSGR_TAG_MSG;
 static char tag_ack = CEPH_MSGR_TAG_ACK;
diff --git a/src/kernel/messenger.h b/src/kernel/messenger.h
index 78b8ea3ccaa3..4ccd01c8bb6c 100644
--- a/src/kernel/messenger.h
+++ b/src/kernel/messenger.h
@@ -10,25 +10,6 @@
 
 #include "types.h"
 
-/*
- * Ceph uses the messenger to exchange ceph_msg messages with
- * other hosts in the system.  The messenger provides ordered and
- * reliable delivery.  It tolerates TCP disconnects by reconnecting
- * (with exponential backoff) in the case of a fault (disconnection,
- * bad crc, protocol error).  Acks allow sent messages to be discarded
- * by the sender.
- *
- * The network topology is flat: there is no "client" or "server," and
- * any node can initiate a connection (i.e., send messages) to any other
- * node.  There is a fair bit of complexity to handle the "connection
- * race" case where two nodes are simultaneously connecting to each other
- * so that the end result is a single session.
- *
- * The messenger can also send messages in "lossy" mode, where there is
- * no error recovery or connect retry... the message is just dropped if
- * something goes wrong.
- */
-
 struct ceph_msg;
 
 #define IPQUADPORT(n)							\