diff options
Diffstat (limited to 'sys/xen/interface/io/xenbus.h')
| -rw-r--r-- | sys/xen/interface/io/xenbus.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/sys/xen/interface/io/xenbus.h b/sys/xen/interface/io/xenbus.h index 5e24f31..672c7d4 100644 --- a/sys/xen/interface/io/xenbus.h +++ b/sys/xen/interface/io/xenbus.h @@ -64,6 +64,15 @@ enum xenbus_state { /* * Closed: No connection exists between front and back end. + * + * For backend devices with the "online" attribute, the front can + * request a reconnect at any time. To handle this transition + * gracefully, backend devices must reinitialize any XenStore data + * used to negotiate features with a peer before transitioning to + * the closed state. When a reconnect request occurs, the + * XenBus backend support code will automatically transition the + * backend device from Closed to InitWait, kicking off the ring + * and feature negotiation process. */ XenbusStateClosed = 6, |
