drbd: Do not send state packets while lower than C_CONNECTED cstate

I.e. in C_WF_REPORT_PARAMS or in C_WF_CONNECTION.
Sending may already work in these cstates, but the peer still expects
the HandShake / ConnectionFeatures packet.

Actually triggered by the Testuite on kugel.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c
index 58c77bb..507cfcc 100644 (file)
--- a/drivers/block/drbd/drbd_state.c
+++ b/drivers/block/drbd/drbd_state.c
@@ -1325,7 +1325,9 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
                                "ASSERT FAILED: disk is %s during detach\n",
                                drbd_disk_str(mdev->state.disk));
 
-               drbd_send_state(mdev, ns);
+               if (ns.conn >= C_CONNECTED)
+                       drbd_send_state(mdev, ns);
+
                drbd_rs_cancel_all(mdev);
 
                /* In case we want to get something to stable storage still,
@@ -1353,14 +1355,15 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os,
                 mdev->rs_failed = 0;
                 atomic_set(&mdev->rs_pending_cnt, 0);
 
-               drbd_send_state(mdev, ns);
+               if (ns.conn >= C_CONNECTED)
+                       drbd_send_state(mdev, ns);
                /* corresponding get_ldev in __drbd_set_state
                 * this may finally trigger drbd_ldev_destroy. */
                put_ldev(mdev);
        }
 
        /* Notify peer that I had a local IO error, and did not detached.. */
-       if (os.disk == D_UP_TO_DATE && ns.disk == D_INCONSISTENT)
+       if (os.disk == D_UP_TO_DATE && ns.disk == D_INCONSISTENT && ns.conn >= C_CONNECTED)
                drbd_send_state(mdev, ns);
 
        /* Disks got bigger while they were detached */