| 1 | /* SPDX-License-Identifier: MIT */ |
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| 2 | /***************************************************************************** |
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| 3 | * xenbus.h |
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| 4 | * |
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| 5 | * Xenbus protocol details. |
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| 6 | * |
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| 7 | * Copyright (C) 2005 XenSource Ltd. |
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| 8 | */ |
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| 9 | |
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| 10 | #ifndef _XEN_PUBLIC_IO_XENBUS_H |
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| 11 | #define _XEN_PUBLIC_IO_XENBUS_H |
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| 12 | |
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| 13 | /* The state of either end of the Xenbus, i.e. the current communication |
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| 14 | status of initialisation across the bus. States here imply nothing about |
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| 15 | the state of the connection between the driver and the kernel's device |
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| 16 | layers. */ |
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| 17 | enum xenbus_state |
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| 18 | { |
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| 19 | XenbusStateUnknown = 0, |
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| 20 | XenbusStateInitialising = 1, |
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| 21 | XenbusStateInitWait = 2, /* Finished early |
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| 22 | initialisation, but waiting |
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| 23 | for information from the peer |
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| 24 | or hotplug scripts. */ |
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| 25 | XenbusStateInitialised = 3, /* Initialised and waiting for a |
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| 26 | connection from the peer. */ |
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| 27 | XenbusStateConnected = 4, |
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| 28 | XenbusStateClosing = 5, /* The device is being closed |
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| 29 | due to an error or an unplug |
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| 30 | event. */ |
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| 31 | XenbusStateClosed = 6, |
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| 32 | |
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| 33 | /* |
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| 34 | * Reconfiguring: The device is being reconfigured. |
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| 35 | */ |
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| 36 | XenbusStateReconfiguring = 7, |
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| 37 | |
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| 38 | XenbusStateReconfigured = 8 |
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| 39 | }; |
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| 40 | |
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| 41 | #endif /* _XEN_PUBLIC_IO_XENBUS_H */ |
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| 42 | |
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