The netdev reports NETDEV_STREAM_CONNECTED event when the backend
is connected, and NETDEV_STREAM_DISCONNECTED when it is disconnected.
The NETDEV_STREAM_CONNECTED event includes the destination address.
This allows a system manager like libvirt to detect when the server
fails.
For instance with passt:
{ 'execute': 'qmp_capabilities' }
{ "return": { } }
{ "timestamp": { "seconds": 1666341395, "microseconds": 505347 },
"event": "NETDEV_STREAM_CONNECTED",
"data": { "netdev-id": "netdev0",
"addr": { "path": "/tmp/passt_1.socket", "type": "unix" } } }
[killing passt here]
{ "timestamp": { "seconds": 1666341430, "microseconds": 968694 },
"event": "NETDEV_STREAM_DISCONNECTED",
"data": { "netdev-id": "netdev0" } }
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
---
net/stream.c | 5 +++++
qapi/net.json | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 54 insertions(+)
diff --git a/net/stream.c b/net/stream.c
index 54c67e14d240..53b7040cc417 100644
--- a/net/stream.c
+++ b/net/stream.c
@@ -38,6 +38,7 @@
#include "io/channel.h"
#include "io/channel-socket.h"
#include "io/net-listener.h"
+#include "qapi/qapi-events-net.h"
typedef struct NetStreamState {
NetClientState nc;
@@ -168,6 +169,8 @@ static gboolean net_stream_send(QIOChannel *ioc,
s->nc.link_down = true;
qemu_set_info_str(&s->nc, "");
+ qapi_event_send_netdev_stream_disconnected(s->nc.name);
+
return G_SOURCE_REMOVE;
}
buf = buf1;
@@ -244,6 +247,7 @@ static void net_stream_listen(QIONetListener *listener,
uri = socket_uri(addr);
qemu_set_info_str(&s->nc, uri);
g_free(uri);
+ qapi_event_send_netdev_stream_connected(s->nc.name, addr);
qapi_free_SocketAddress(addr);
}
@@ -335,6 +339,7 @@ static void net_stream_client_connected(QIOTask *task, gpointer opaque)
s->ioc_read_tag = qio_channel_add_watch(s->ioc, G_IO_IN, net_stream_send,
s, NULL);
s->nc.link_down = false;
+ qapi_event_send_netdev_stream_connected(s->nc.name, addr);
qapi_free_SocketAddress(addr);
return;
diff --git a/qapi/net.json b/qapi/net.json
index 39388b1b6c41..c37b24717382 100644
--- a/qapi/net.json
+++ b/qapi/net.json
@@ -895,3 +895,52 @@
##
{ 'event': 'FAILOVER_NEGOTIATED',
'data': {'device-id': 'str'} }
+
+##
+# @NETDEV_STREAM_CONNECTED:
+#
+# Emitted when the netdev stream backend is connected
+#
+# @netdev-id: QEMU netdev id that is connected
+# @addr: The destination address
+#
+# Since: 7.2
+#
+# Example:
+#
+# <- { "event": "NETDEV_STREAM_CONNECTED",
+# "data": { "netdev-id": "netdev0",
+# "addr": { "port": "47666", "ipv6": true,
+# "host": "::1", "type": "inet" } },
+# "timestamp": { "seconds": 1666269863, "microseconds": 311222 } }
+#
+# or
+#
+# <- { "event": "NETDEV_STREAM_CONNECTED",
+# "data": { "netdev-id": "netdev0",
+# "addr": { "path": "/tmp/qemu0", "type": "unix" } },
+# "timestamp": { "seconds": 1666269706, "microseconds": 413651 } }
+#
+##
+{ 'event': 'NETDEV_STREAM_CONNECTED',
+ 'data': { 'netdev-id': 'str',
+ 'addr': 'SocketAddress' } }
+
+##
+# @NETDEV_STREAM_DISCONNECTED:
+#
+# Emitted when the netdev stream backend is disconnected
+#
+# @netdev-id: QEMU netdev id that is disconnected
+#
+# Since: 7.2
+#
+# Example:
+#
+# <- { 'event': 'NETDEV_STREAM_DISCONNECTED',
+# 'data': {'netdev-id': 'netdev0'},
+# 'timestamp': {'seconds': 1663330937, 'microseconds': 526695} }
+#
+##
+{ 'event': 'NETDEV_STREAM_DISCONNECTED',
+ 'data': { 'netdev-id': 'str' } }
--
2.37.3