From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001

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

Date: Mon, 6 Apr 2020 12:16:37 +0200

Subject: [PATCH] PVE: [Up] qmp: add get_link_status

Signed-off-by: Thomas Lamprecht <t.lamprecht@proxmox.com>

---

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

 qapi/net.json    | 15 +++++++++++++++

 qapi/pragma.json |  1 +

 3 files changed, 43 insertions(+)

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

index 76bbb7c31b..82e0a768b4 100644

--- a/net/net.c

+++ b/net/net.c

@@ -1314,6 +1314,33 @@ 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 colo_notify_filters_event(int event, Error **errp)

 {

     NetClientState *nc;

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

index 7fab2e7cd8..74c9a6109e 100644

--- a/qapi/net.json

+++ b/qapi/net.json

@@ -35,6 +35,21 @@

 ##

 { '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' }

+

 ##

 # @netdev_add:

 #

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

index 3bc0335d1f..7c91ea3685 100644

--- a/qapi/pragma.json

+++ b/qapi/pragma.json

@@ -22,6 +22,7 @@

         'system_reset',

         'system_wakeup' ],

     'command-returns-exceptions': [

+        'get_link_status',

         'human-monitor-command',

         'qom-get',

         'query-tpm-models',