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migration: convert socket server to QIONetListener

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Instead of creating a QIOChannelSocket directly for the migration
server socket, use a QIONetListener. This provides the ability
to listen on multiple sockets at the same time, so enables
full support for IPv4/IPv6 dual stack.

For example,   '$QEMU -incoming tcp::9000' now correctly listens
on both 0.0.0.0 and :: at the same time, instead of only on 0.0.0.0.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <20180312141714.7223-1-berrange@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
This commit is contained in:
Daniel P. Berrange 2018-03-12 14:17:14 +00:00 committed by Dr. David Alan Gilbert
parent 4c2c101590
commit bdd847a026
1 changed files with 16 additions and 32 deletions
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48
migration/socket.c
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@ -24,6 +24,7 @@
#include "migration.h"
#include "qemu-file.h"
#include "io/channel-socket.h"
#include "io/net-listener.h"
#include "trace.h"
@ -129,34 +130,20 @@ void unix_start_outgoing_migration(MigrationState *s,
}
static gboolean socket_accept_incoming_migration(QIOChannel *ioc,
GIOCondition condition,
gpointer opaque)
static void socket_accept_incoming_migration(QIONetListener *listener,
QIOChannelSocket *cioc,
gpointer opaque)
{
QIOChannelSocket *sioc;
Error *err = NULL;
sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(ioc),
&err);
if (!sioc) {
error_report("could not accept migration connection (%s)",
error_get_pretty(err));
goto out;
}
trace_migration_socket_incoming_accepted();
qio_channel_set_name(QIO_CHANNEL(sioc), "migration-socket-incoming");
migration_channel_process_incoming(QIO_CHANNEL(sioc));
object_unref(OBJECT(sioc));
qio_channel_set_name(QIO_CHANNEL(cioc), "migration-socket-incoming");
migration_channel_process_incoming(QIO_CHANNEL(cioc));
out:
if (migration_has_all_channels()) {
/* Close listening socket as its no longer needed */
qio_channel_close(ioc, NULL);
return G_SOURCE_REMOVE;
} else {
return G_SOURCE_CONTINUE;
qio_net_listener_disconnect(listener);
object_unref(OBJECT(listener));
}
}
@ -164,21 +151,18 @@ out:
static void socket_start_incoming_migration(SocketAddress *saddr,
Error **errp)
{
QIOChannelSocket *listen_ioc = qio_channel_socket_new();
QIONetListener *listener = qio_net_listener_new();
qio_channel_set_name(QIO_CHANNEL(listen_ioc),
"migration-socket-listener");
qio_net_listener_set_name(listener, "migration-socket-listener");
if (qio_channel_socket_listen_sync(listen_ioc, saddr, errp) < 0) {
object_unref(OBJECT(listen_ioc));
if (qio_net_listener_open_sync(listener, saddr, errp) < 0) {
object_unref(OBJECT(listener));
return;
}
qio_channel_add_watch(QIO_CHANNEL(listen_ioc),
G_IO_IN,
socket_accept_incoming_migration,
listen_ioc,
(GDestroyNotify)object_unref);
qio_net_listener_set_client_func(listener,
socket_accept_incoming_migration,
NULL, NULL);
}
void tcp_start_incoming_migration(const char *host_port, Error **errp)