[Qemu-devel] [RFC] QMP: Introduce query-netdevices documentation

[Miguel Di Ciurcio Filho <miguel.filho@gmail.com>]

This introduces the protocol specification for querying information about
network devices available on a VM and a new monitor command that show the same
information.

Signed-off-by: Miguel Di Ciurcio Filho <miguel.filho@gmail.com>
---
 qemu-monitor.hx |   69 +++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 69 insertions(+), 0 deletions(-)

diff --git a/qemu-monitor.hx b/qemu-monitor.hx
index f6a94f2..8600129 100644
--- a/qemu-monitor.hx
+++ b/qemu-monitor.hx
@@ -1674,6 +1674,75 @@ show the various VLANs and the associated devices
 ETEXI
 
 STEXI
+@item info netdevices
+show information about network devices
+ETEXI
+SQMP
+query-netdevices
+----------------
+
+Each device is represented by a json-object. The returned value is a json-array
+of all devices.
+
+Each json-object contain the following:
+
+- "device": device name (json-string)
+- "vlan": only present if the device is attached to a VLAN (json-int)
+- "info": json-object containing the following:
+          - "model": type of the device (json-string)
+              - Possible values: "tap", "socket", "xen", "slirp", "dump",
+                                 "vde", "ne2k_pci", "i82551", "i82557b",
+                                 "i82559er", "rtl8139", "e1000", "pcnet",
+                                 "virtio", "dp83932", "lan9118", "mcf_fec",
+                                 "xilinx-ethlite", "lance", "stellaris",
+                                 "smc91c111", "ne2k_isa", "mv88w8618",
+                                 "mipsnet", "fseth", "dp83932", "usb"
+          - "macaddr": MAC address, only present if the device is a NIC
+            (json-string)
+          - "script": path to script used to configure the device, only present
+            if "model" is "tap" (json-string)
+          - "downscript": path to script used to deconfigure the device, only
+            present if "model" is "tap" (json-string)
+          - "fd": handle to the device, only present if "model" is "vde"
+            (json-int)
+          - "ifname": name of the host device connected to the guest device,
+            only present if "model" is "tap" (json-string)
+          - "host": IP address, only present if "model" is "socket"
+            (json-string)
+          - "service": port number, only present if "model" is "socket"
+          - "family": address familyi, only present if "model" is "socket"
+            (json-string)
+                - Possible values: "ipv4"
+
+Example:
+
+-> { "execute": "query-netdevices" }
+<- {
+      "return": [
+         {
+            "device": "tap.0",
+            "vlan": 0,
+            "info": {
+               "script": "/etc/kvm/kvm-ifup",
+               "downscript": "/etc/qemu-ifdown",
+               "ifname": "tap0",
+               "model": "tap"
+            },
+         },
+         {
+           "device": "e1000.0",
+           "vlan": 0,
+           "info": {
+              "model": "e1000",
+              "macaddr": "52:54:00:12:34:56"
+           },
+         }
+      ]
+   }
+
+EQMP
+
+STEXI
 @item info chardev
 show the character devices
 ETEXI
-- 
1.7.1