diff options
| author | Sage Weil <sage@inktank.com> | 2013-03-25 08:47:40 -0700 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-05-01 21:17:09 -0700 |
| commit | 3a23083bda56850a1dc0e1c6d270b1f5dc789f07 (patch) | |
| tree | ddd52f6a7c8da4334d68ae3e28825d89155d29a0 /include/linux/ceph | |
| parent | 022f3e2ee2354599faccf5a764a5a24a5dd194c9 (diff) | |
libceph: implement RECONNECT_SEQ feature
This is an old protocol extension that allows the client and server to
avoid resending old messages after a reconnect (following a socket error).
Instead, the exchange their sequence numbers during the handshake. This
avoids sending a bunch of useless data over the socket.
It has been supported in the server code since v0.22 (Sep 2010).
Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>
Diffstat (limited to 'include/linux/ceph')
| -rw-r--r-- | include/linux/ceph/ceph_features.h | 2 | ||||
| -rw-r--r-- | include/linux/ceph/msgr.h | 1 |
2 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/ceph/ceph_features.h b/include/linux/ceph/ceph_features.h index 76554cecaab..4c42080347a 100644 --- a/include/linux/ceph/ceph_features.h +++ b/include/linux/ceph/ceph_features.h @@ -41,6 +41,7 @@ */ #define CEPH_FEATURES_SUPPORTED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ + CEPH_FEATURE_RECONNECT_SEQ | \ CEPH_FEATURE_PGID64 | \ CEPH_FEATURE_PGPOOL3 | \ CEPH_FEATURE_OSDENC | \ @@ -51,6 +52,7 @@ #define CEPH_FEATURES_REQUIRED_DEFAULT \ (CEPH_FEATURE_NOSRCADDR | \ + CEPH_FEATURE_RECONNECT_SEQ | \ CEPH_FEATURE_PGID64 | \ CEPH_FEATURE_PGPOOL3 | \ CEPH_FEATURE_OSDENC) diff --git a/include/linux/ceph/msgr.h b/include/linux/ceph/msgr.h index 680d3d648ca..3d94a73b5f3 100644 --- a/include/linux/ceph/msgr.h +++ b/include/linux/ceph/msgr.h @@ -87,6 +87,7 @@ struct ceph_entity_inst { #define CEPH_MSGR_TAG_BADPROTOVER 10 /* bad protocol version */ #define CEPH_MSGR_TAG_BADAUTHORIZER 11 /* bad authorizer */ #define CEPH_MSGR_TAG_FEATURES 12 /* insufficient features */ +#define CEPH_MSGR_TAG_SEQ 13 /* 64-bit int follows with seen seq number */ /* |