From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

From: Wolfgang Bumiller <w.bumiller@proxmox.com>

Date: Wed, 9 Dec 2015 16:34:41 +0100

Subject: [PATCH] qmp: add get_link_status

---

 net/net.c        | 27 +++++++++++++++++++++++++++

 qapi-schema.json | 16 ++++++++++++++++

 2 files changed, 43 insertions(+)

diff --git a/net/net.c b/net/net.c

index 0ac3b9e80c..7410c1e5f3 100644

--- a/net/net.c

+++ b/net/net.c

@@ -1373,6 +1373,33 @@ void hmp_info_network(Monitor *mon, const QDict *qdict)

     }

 }

+int64_t qmp_get_link_status(const char *name, Error **errp)

+{

+    NetClientState *ncs[MAX_QUEUE_NUM];

+    NetClientState *nc;

+    int queues;

+    bool ret;

+

+    queues = qemu_find_net_clients_except(name, ncs,

+                                          NET_CLIENT_DRIVER__MAX,

+                                          MAX_QUEUE_NUM);

+

+    if (queues == 0) {

+        error_set(errp, ERROR_CLASS_DEVICE_NOT_FOUND,

+                  "Device '%s' not found", name);

+        return (int64_t) -1;

+    }

+

+    nc = ncs[0];

+    ret = ncs[0]->link_down;

+

+    if (nc->peer->info->type == NET_CLIENT_DRIVER_NIC) {

+      ret = ncs[0]->peer->link_down;

+    }

+

+    return (int64_t) ret ? 0 : 1;

+}

+

 void qmp_set_link(const char *name, bool up, Error **errp)

 {

     NetClientState *ncs[MAX_QUEUE_NUM];

diff --git a/qapi-schema.json b/qapi-schema.json

index 361700d37c..5e82933ca1 100644

--- a/qapi-schema.json

+++ b/qapi-schema.json

@@ -56,6 +56,7 @@

 { 'pragma': {

     # Commands allowed to return a non-dictionary:

     'returns-whitelist': [

+        'get_link_status',

         'human-monitor-command',

         'qom-get',

         'query-migrate-cache-size',

@@ -2537,6 +2538,21 @@

 { 'command': 'set_link', 'data': {'name': 'str', 'up': 'bool'} }

 ##

+# @get_link_status:

+#

+# Get the current link state of the nics or nic.

+#

+# @name: name of the nic you get the state of

+#

+# Return: If link is up 1

+#         If link is down 0

+#         If an error occure an empty string.

+#

+# Notes: this is an Proxmox VE extension and not offical part of Qemu.

+##

+{ 'command': 'get_link_status', 'data': {'name': 'str'}, 'returns': 'int'}

+

+##

 # @balloon:

 #

 # Request the balloon driver to change its balloon size.

-- 

2.11.0