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| author | grehan <grehan@FreeBSD.org> | 2011-06-28 06:26:03 +0000 |
|---|---|---|
| committer | grehan <grehan@FreeBSD.org> | 2011-06-28 06:26:03 +0000 |
| commit | 2c6741be0f59191f2283eb268e4f7690399d578a (patch) | |
| tree | b139c8c6dcca4fa284815daade405b75886ee360 /sys/xen/interface/io/xenbus.h | |
| parent | 3c35264f695e0a1f8a04dbcca1c93bb5159b2274 (diff) | |
| parent | 19ae02bba572390c7299166228d31e54003e094a (diff) | |
| download | FreeBSD-src-2c6741be0f59191f2283eb268e4f7690399d578a.zip FreeBSD-src-2c6741be0f59191f2283eb268e4f7690399d578a.tar.gz | |
IFC @ r222830
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, |
