Commit a06cd488 authored by Dr. David Alan Gilbert's avatar Dr. David Alan Gilbert Committed by Jason Wang
Browse files

qmp: Add announce-self command 



Add a qmp command that can trigger guest announcements.

It uses its own announce-timer instance, and parameters
passed to it explicitly in the command.

Like most qmp commands, it's in the main thread/bql, so
there's no racing with any outstanding timer.

Based on work of Germano Veit Michel <germano@redhat.com> and
                 Vladislav Yasevich <vyasevic@redhat.com>

Signed-off-by: default avatarDr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarJason Wang <jasowang@redhat.com>
parent b2c929f0

net/announce.c

+7 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 
#include "net/net.h"

#include "qapi/clone-visitor.h"

#include "qapi/qapi-visit-net.h"

#include "qapi/qapi-commands-net.h"

#include "trace.h"



int64_t qemu_announce_timer_step(AnnounceTimer *timer)
@@ -131,3 +132,9 @@ void qemu_announce_self(AnnounceTimer *timer, AnnounceParameters *params) 
        qemu_announce_timer_del(timer);

    }

}



void qmp_announce_self(AnnounceParameters *params, Error **errp)

{

    static AnnounceTimer announce_timer;

    qemu_announce_self(&announce_timer, params);

}

qapi/net.json

+20 −0
Original line number Diff line number Diff line
@@ -707,3 +707,23 @@ 
            'max': 'int',

            'rounds': 'int',

            'step': 'int' } }



##

# @announce-self:

#

# Trigger generation of broadcast RARP frames to update network switches.

# This can be useful when network bonds fail-over the active slave.

#

# @params: AnnounceParameters giving timing and repetition count of announce

#

# Example:

#

# -> { "execute": "announce-self"

#      "arguments": {

#          "initial": 50, "max": 550, "rounds": 10, "step": 50 } }

# <- { "return": {} }

#

# Since: 4.0

##

{ 'command': 'announce-self', 'boxed': true,

  'data' : 'AnnounceParameters'}