libceph: reset connection retry on successfully negotiation

We exponentially back off when we encounter connection errors.  If several
errors accumulate, we will eventually wait ages before even trying to
reconnect.

Fix this by resetting the backoff counter after a successful negotiation/
connection with the remote node.  Fixes ceph issue #2802.

Signed-off-by: Sage Weil <sage@inktank.com>
Reviewed-by: Yehuda Sadeh <yehuda@inktank.com>
Reviewed-by: Alex Elder <elder@inktank.com>

diff --git a/net/ceph/messenger.c b/net/ceph/messenger.c
index a4779988c8475f6de52bbf2c269a50672bab66e8..07204f19e856c3acef4ea1252fcdc70ec86f3cdd 100644 (file)
--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -1629,6 +1629,8 @@ static int process_connect(struct ceph_connection *con)
                if (con->in_reply.flags & CEPH_MSG_CONNECT_LOSSY)
                        set_bit(LOSSYTX, &con->flags);
 
+               con->delay = 0;      /* reset backoff memory */
+
                prepare_read_tag(con);
                break;