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ceph: add version field to message header 

This makes it easier for individual message types to indicate
their particular encoding, and make future changes backward
compatible.

Signed-off-by: Sage Weil <sage@newdream.net>
This commit is contained in:
Sage Weil 2009-10-13 12:55:26 -07:00
parent 572033069d
commit 535bbb5307
1 changed files with 2 additions and 1 deletions
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3
fs/ceph/msgr.h
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@ -21,7 +21,7 @@
* whenever the wire protocol changes. try to keep this string length
* constant.
*/
#define CEPH_BANNER "ceph v021"
#define CEPH_BANNER "ceph v022"
#define CEPH_BANNER_MAX_LEN 30
@ -125,6 +125,7 @@ struct ceph_msg_header {
__le64 seq; /* message seq# for this session */
__le16 type; /* message type */
__le16 priority; /* priority. higher value == higher priority */
__le16 version; /* version of message encoding */
__le32 front_len; /* bytes in main payload */
__le32 middle_len;/* bytes in middle payload */