From: David Scott <dave.scott@citrix.com>
To: xen-devel@lists.xenproject.org
Cc: ian.jackson@eu.citrix.com, David Scott <dave.scott@citrix.com>,
wei.liu2@citrix.com, ian.campbell@citrix.com,
stefano.stabellini@eu.citrix.com
Subject: [PATCH v2 1/6] libxl: add a list of abstract 'channels' to the domain config
Date: Mon, 16 Jun 2014 10:49:50 +0100 [thread overview]
Message-ID: <1402912195-24732-2-git-send-email-dave.scott@citrix.com> (raw)
In-Reply-To: <1402912195-24732-1-git-send-email-dave.scott@citrix.com>
A 'channel' is a low-bandwidth private communication channel that
resembles a physical serial port. Example uses include:
* providing initial VM configuration without having to use the
network
* signalling a guest agent
Every channel has a string 'name' which the VM can use to find
the appropriate handler. Each channel has an implementation 'type'
which currently includes:
* NONE: reads will block, writes will be thrown away
* PTY: the I/O surfaces as a pty in the backend domain
* PATH: writes are appended to a log file in the backend domain
* SOCKET: a listening Unix domain socket accepts a connection in
the backend domain and proxies
Signed-off-by: David Scott <dave.scott@citrix.com>
---
tools/libxl/libxl_types.idl | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/tools/libxl/libxl_types.idl b/tools/libxl/libxl_types.idl
index 52f1aa9..5671d86 100644
--- a/tools/libxl/libxl_types.idl
+++ b/tools/libxl/libxl_types.idl
@@ -51,6 +51,17 @@ libxl_domain_type = Enumeration("domain_type", [
(2, "PV"),
], init_val = -1)
+libxl_channel_type = Enumeration("channel_type", [
+ # Connected to nothing:
+ (0, "NONE"),
+ # Connect to a pty in the backend domain:
+ (1, "PTY"),
+ # Spool output to a file in the backend domain:
+ (2, "PATH"),
+ # Listen on a Unix domain socket in the backend domain:
+ (3, "SOCKET"),
+ ])
+
libxl_device_model_version = Enumeration("device_model_version", [
(0, "UNKNOWN"),
(1, "QEMU_XEN_TRADITIONAL"), # Historical qemu-xen device model (qemu-dm)
@@ -457,6 +468,15 @@ libxl_device_vtpm = Struct("device_vtpm", [
("uuid", libxl_uuid),
])
+libxl_device_channel = Struct("device_channel", [
+ ("backend_domid", libxl_domid),
+ ("backend_domname", string),
+ ("devid", libxl_devid),
+ ("name", string),
+ ("type", libxl_channel_type),
+ ("path", string),
+])
+
libxl_domain_config = Struct("domain_config", [
("c_info", libxl_domain_create_info),
("b_info", libxl_domain_build_info),
@@ -467,6 +487,7 @@ libxl_domain_config = Struct("domain_config", [
("vfbs", Array(libxl_device_vfb, "num_vfbs")),
("vkbs", Array(libxl_device_vkb, "num_vkbs")),
("vtpms", Array(libxl_device_vtpm, "num_vtpms")),
+ ("channels", Array(libxl_device_channel, "num_channels")),
("on_poweroff", libxl_action_on_shutdown),
("on_reboot", libxl_action_on_shutdown),
--
1.7.10.4
next prev parent reply other threads:[~2014-06-16 9:50 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-16 9:49 [PATCH v2] implement libvirt-like 'channels' via PV consoles David Scott
2014-06-16 9:49 ` David Scott [this message]
2014-06-18 13:27 ` [PATCH v2 1/6] libxl: add a list of abstract 'channels' to the domain config Ian Campbell
2014-06-18 14:05 ` Dave Scott
2014-06-18 14:38 ` Ian Campbell
2014-06-16 9:49 ` [PATCH v2 2/6] xl: add support for channels David Scott
2014-06-16 9:49 ` [PATCH v2 3/6] libxl: implement channels via PV console rings David Scott
2014-06-18 13:31 ` Ian Campbell
2014-06-16 9:49 ` [PATCH v2 4/6] libxl: spawn a qemu to implement channels David Scott
2014-06-18 13:32 ` Ian Campbell
2014-06-16 9:49 ` [PATCH v2 5/6] Add a section in xl.cfg(5) describing 'channels' David Scott
2014-06-18 13:38 ` Ian Campbell
2014-06-16 9:49 ` [PATCH v2 6/6] Add a general description of the channel mechanism to docs/misc/ David Scott
2014-06-18 13:41 ` Ian Campbell
2014-06-18 14:37 ` Dave Scott
2014-06-18 14:43 ` Ian Campbell
2014-06-18 15:00 ` Dave Scott
2014-06-16 13:34 ` [PATCH v2] implement libvirt-like 'channels' via PV consoles Konrad Rzeszutek Wilk
2014-06-16 13:49 ` Dave Scott
2014-06-16 13:52 ` Konrad Rzeszutek Wilk
2014-06-18 13:43 ` Ian Campbell
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