commit dbad185d4939ffb806f6fa753ef9f470e3b72b62
author Sage Weil <sage@newdream.net> Thu Mar 25 15:45:38 2010 -0700
committer Sage Weil <sage@newdream.net> Mon May 17 15:25:32 2010 -0700
tree 0d3aaa8f0028c8b4c7826ff2a9c292ca862cd64a
parent a5ee751c15016d0deee0d651e42a3b163ea73ade

ceph: drop src address(es) from message header [new protocol feature]

The CEPH_FEATURE_NOSRCADDR protocol feature avoids putting the full source
address in each message header (twice).  This patch switches the client to
the new scheme, and _requires_ this feature on the server.  The server
will support both the old and new schemes.  That means an old client will
work with a new server, but a new client will not work with an old server.

Signed-off-by: Sage Weil <sage@newdream.net>

fs/ceph/ceph_fs.h

diff --git a/fs/ceph/ceph_fs.h b/fs/ceph/ceph_fs.h
index 0c2241e..8b194c6 100644
--- a/fs/ceph/ceph_fs.h
+++ b/fs/ceph/ceph_fs.h
@@ -53,8 +53,17 @@
 /*
  * feature bits
  */
-#define CEPH_FEATURE_SUPPORTED  0
-#define CEPH_FEATURE_REQUIRED   0
+#define CEPH_FEATURE_UID        1
+#define CEPH_FEATURE_NOSRCADDR  2
+
+#define CEPH_FEATURE_SUPPORTED_MON  CEPH_FEATURE_UID|CEPH_FEATURE_NOSRCADDR
+#define CEPH_FEATURE_REQUIRED_MON   CEPH_FEATURE_UID
+#define CEPH_FEATURE_SUPPORTED_MDS  CEPH_FEATURE_UID|CEPH_FEATURE_NOSRCADDR
+#define CEPH_FEATURE_REQUIRED_MDS   CEPH_FEATURE_UID
+#define CEPH_FEATURE_SUPPORTED_OSD  CEPH_FEATURE_UID|CEPH_FEATURE_NOSRCADDR
+#define CEPH_FEATURE_REQUIRED_OSD   CEPH_FEATURE_UID
+#define CEPH_FEATURE_SUPPORTED_CLIENT CEPH_FEATURE_NOSRCADDR
+#define CEPH_FEATURE_REQUIRED_CLIENT CEPH_FEATURE_NOSRCADDR
 
 
 /*