diff mbox series

[1/2] yank: Remove dependency on qiochannel

Message ID 20ff143fc2db23e27cd41d38043e481376c9cec1.1616521341.git.lukasstraub2@web.de (mailing list archive)
State New, archived
Headers show
Series yank: Always link full yank code | expand

Commit Message

Lukas Straub March 23, 2021, 5:52 p.m. UTC
Remove dependency on qiochannel by removing yank_generic_iochannel and
letting migration and chardev use their own yank function for
iochannel.

Signed-off-by: Lukas Straub <lukasstraub2@web.de>
---
 MAINTAINERS                   |  1 +
 chardev/char-socket.c         | 21 ++++++++++++++-------
 include/qemu/yank.h           | 10 ----------
 migration/channel.c           |  6 ++++--
 migration/meson.build         |  1 +
 migration/multifd.c           |  3 ++-
 migration/qemu-file-channel.c |  3 ++-
 migration/yank_functions.c    | 20 ++++++++++++++++++++
 migration/yank_functions.h    | 17 +++++++++++++++++
 stubs/yank.c                  |  6 ------
 util/yank.c                   |  8 --------
 11 files changed, 61 insertions(+), 35 deletions(-)
 create mode 100644 migration/yank_functions.c
 create mode 100644 migration/yank_functions.h

--
2.30.2

Comments

Thomas Huth March 23, 2021, 6:03 p.m. UTC | #1
On 23/03/2021 18.52, Lukas Straub wrote:
> Remove dependency on qiochannel by removing yank_generic_iochannel and
> letting migration and chardev use their own yank function for
> iochannel.
> 
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>
> ---
>   MAINTAINERS                   |  1 +
>   chardev/char-socket.c         | 21 ++++++++++++++-------
>   include/qemu/yank.h           | 10 ----------
>   migration/channel.c           |  6 ++++--
>   migration/meson.build         |  1 +
>   migration/multifd.c           |  3 ++-
>   migration/qemu-file-channel.c |  3 ++-
>   migration/yank_functions.c    | 20 ++++++++++++++++++++
>   migration/yank_functions.h    | 17 +++++++++++++++++
>   stubs/yank.c                  |  6 ------
>   util/yank.c                   |  8 --------
>   11 files changed, 61 insertions(+), 35 deletions(-)
>   create mode 100644 migration/yank_functions.c
>   create mode 100644 migration/yank_functions.h

Reviewed-by: Thomas Huth <thuth@redhat.com>
Marc-André Lureau March 25, 2021, 8:29 p.m. UTC | #2
On Tue, Mar 23, 2021 at 9:54 PM Lukas Straub <lukasstraub2@web.de> wrote:

> Remove dependency on qiochannel by removing yank_generic_iochannel and
> letting migration and chardev use their own yank function for
> iochannel.
>
> Signed-off-by: Lukas Straub <lukasstraub2@web.de>
>

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

---
>  MAINTAINERS                   |  1 +
>  chardev/char-socket.c         | 21 ++++++++++++++-------
>  include/qemu/yank.h           | 10 ----------
>  migration/channel.c           |  6 ++++--
>  migration/meson.build         |  1 +
>  migration/multifd.c           |  3 ++-
>  migration/qemu-file-channel.c |  3 ++-
>  migration/yank_functions.c    | 20 ++++++++++++++++++++
>  migration/yank_functions.h    | 17 +++++++++++++++++
>  stubs/yank.c                  |  6 ------
>  util/yank.c                   |  8 --------
>  11 files changed, 61 insertions(+), 35 deletions(-)
>  create mode 100644 migration/yank_functions.c
>  create mode 100644 migration/yank_functions.h
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 9147e9a429..455775c4a3 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -2821,6 +2821,7 @@ M: Lukas Straub <lukasstraub2@web.de>
>  S: Odd fixes
>  F: util/yank.c
>  F: stubs/yank.c
> +F: migration/yank_functions*
>  F: include/qemu/yank.h
>  F: qapi/yank.json
>
> diff --git a/chardev/char-socket.c b/chardev/char-socket.c
> index f618bdec28..1d455ecca4 100644
> --- a/chardev/char-socket.c
> +++ b/chardev/char-socket.c
> @@ -402,6 +402,13 @@ static void remove_hup_source(SocketChardev *s)
>      }
>  }
>
> +static void char_socket_yank_iochannel(void *opaque)
> +{
> +    QIOChannel *ioc = QIO_CHANNEL(opaque);
> +
> +    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
> +}
> +
>  static void tcp_chr_free_connection(Chardev *chr)
>  {
>      SocketChardev *s = SOCKET_CHARDEV(chr);
> @@ -424,7 +431,7 @@ static void tcp_chr_free_connection(Chardev *chr)
>          (s->state == TCP_CHARDEV_STATE_CONNECTING
>          || s->state == TCP_CHARDEV_STATE_CONNECTED)) {
>          yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                                 yank_generic_iochannel,
> +                                 char_socket_yank_iochannel,
>                                   QIO_CHANNEL(s->sioc));
>      }
>      object_unref(OBJECT(s->sioc));
> @@ -946,7 +953,7 @@ static int tcp_chr_add_client(Chardev *chr, int fd)
>      tcp_chr_set_client_ioc_name(chr, sioc);
>      if (s->registered_yank) {
>          yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                               yank_generic_iochannel,
> +                               char_socket_yank_iochannel,
>                                 QIO_CHANNEL(sioc));
>      }
>      ret = tcp_chr_new_client(chr, sioc);
> @@ -965,7 +972,7 @@ static void tcp_chr_accept(QIONetListener *listener,
>      tcp_chr_set_client_ioc_name(chr, cioc);
>      if (s->registered_yank) {
>          yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                               yank_generic_iochannel,
> +                               char_socket_yank_iochannel,
>                                 QIO_CHANNEL(cioc));
>      }
>      tcp_chr_new_client(chr, cioc);
> @@ -985,7 +992,7 @@ static int tcp_chr_connect_client_sync(Chardev *chr,
> Error **errp)
>      }
>      if (s->registered_yank) {
>          yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                               yank_generic_iochannel,
> +                               char_socket_yank_iochannel,
>                                 QIO_CHANNEL(sioc));
>      }
>      tcp_chr_new_client(chr, sioc);
> @@ -1005,7 +1012,7 @@ static void tcp_chr_accept_server_sync(Chardev *chr)
>      tcp_chr_set_client_ioc_name(chr, sioc);
>      if (s->registered_yank) {
>          yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                               yank_generic_iochannel,
> +                               char_socket_yank_iochannel,
>                                 QIO_CHANNEL(sioc));
>      }
>      tcp_chr_new_client(chr, sioc);
> @@ -1138,7 +1145,7 @@ static void qemu_chr_socket_connected(QIOTask *task,
> void *opaque)
>          tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED);
>          if (s->registered_yank) {
>              yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                                     yank_generic_iochannel,
> +                                     char_socket_yank_iochannel,
>                                       QIO_CHANNEL(sioc));
>          }
>          check_report_connect_error(chr, err);
> @@ -1176,7 +1183,7 @@ static void tcp_chr_connect_client_async(Chardev
> *chr)
>      tcp_chr_set_client_ioc_name(chr, sioc);
>      if (s->registered_yank) {
>          yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
> -                               yank_generic_iochannel,
> +                               char_socket_yank_iochannel,
>                                 QIO_CHANNEL(sioc));
>      }
>      /*
> diff --git a/include/qemu/yank.h b/include/qemu/yank.h
> index 5b93c70cbf..5375a1f195 100644
> --- a/include/qemu/yank.h
> +++ b/include/qemu/yank.h
> @@ -73,16 +73,6 @@ void yank_unregister_function(const YankInstance
> *instance,
>                                YankFn *func,
>                                void *opaque);
>
> -/**
> - * yank_generic_iochannel: Generic yank function for iochannel
> - *
> - * This is a generic yank function which will call qio_channel_shutdown
> on the
> - * provided QIOChannel.
> - *
> - * @opaque: QIOChannel to shutdown
> - */
> -void yank_generic_iochannel(void *opaque);
> -
>  #define BLOCKDEV_YANK_INSTANCE(the_node_name) (&(YankInstance) { \
>          .type = YANK_INSTANCE_TYPE_BLOCK_NODE, \
>          .u.block_node.node_name = (the_node_name) })
> diff --git a/migration/channel.c b/migration/channel.c
> index 35fe234e9c..c9ee902021 100644
> --- a/migration/channel.c
> +++ b/migration/channel.c
> @@ -20,6 +20,7 @@
>  #include "io/channel-tls.h"
>  #include "io/channel-socket.h"
>  #include "qemu/yank.h"
> +#include "yank_functions.h"
>
>  /**
>   * @migration_channel_process_incoming - Create new incoming migration
> channel
> @@ -38,7 +39,8 @@ void migration_channel_process_incoming(QIOChannel *ioc)
>          ioc, object_get_typename(OBJECT(ioc)));
>
>      if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) {
> -        yank_register_function(MIGRATION_YANK_INSTANCE,
> yank_generic_iochannel,
> +        yank_register_function(MIGRATION_YANK_INSTANCE,
> +                               migration_yank_iochannel,
>                                 QIO_CHANNEL(ioc));
>      }
>
> @@ -76,7 +78,7 @@ void migration_channel_connect(MigrationState *s,
>      if (!error) {
>          if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) {
>              yank_register_function(MIGRATION_YANK_INSTANCE,
> -                                   yank_generic_iochannel,
> +                                   migration_yank_iochannel,
>                                     QIO_CHANNEL(ioc));
>          }
>
> diff --git a/migration/meson.build b/migration/meson.build
> index 9645f44005..2cfa8eed72 100644
> --- a/migration/meson.build
> +++ b/migration/meson.build
> @@ -6,6 +6,7 @@ migration_files = files(
>    'vmstate.c',
>    'qemu-file-channel.c',
>    'qemu-file.c',
> +  'yank_functions.c',
>  )
>  softmmu_ss.add(migration_files)
>
> diff --git a/migration/multifd.c b/migration/multifd.c
> index 03527c564c..a6677c45c8 100644
> --- a/migration/multifd.c
> +++ b/migration/multifd.c
> @@ -27,6 +27,7 @@
>
>  #include "qemu/yank.h"
>  #include "io/channel-socket.h"
> +#include "yank_functions.h"
>
>  /* Multiple fd's */
>
> @@ -989,7 +990,7 @@ int multifd_load_cleanup(Error **errp)
>          if (object_dynamic_cast(OBJECT(p->c), TYPE_QIO_CHANNEL_SOCKET)
>              && OBJECT(p->c)->ref == 1) {
>              yank_unregister_function(MIGRATION_YANK_INSTANCE,
> -                                     yank_generic_iochannel,
> +                                     migration_yank_iochannel,
>                                       QIO_CHANNEL(p->c));
>          }
>
> diff --git a/migration/qemu-file-channel.c b/migration/qemu-file-channel.c
> index afc3a7f642..876d05a540 100644
> --- a/migration/qemu-file-channel.c
> +++ b/migration/qemu-file-channel.c
> @@ -28,6 +28,7 @@
>  #include "io/channel-socket.h"
>  #include "qemu/iov.h"
>  #include "qemu/yank.h"
> +#include "yank_functions.h"
>
>
>  static ssize_t channel_writev_buffer(void *opaque,
> @@ -108,7 +109,7 @@ static int channel_close(void *opaque, Error **errp)
>      if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)
>          && OBJECT(ioc)->ref == 1) {
>          yank_unregister_function(MIGRATION_YANK_INSTANCE,
> -                                 yank_generic_iochannel,
> +                                 migration_yank_iochannel,
>                                   QIO_CHANNEL(ioc));
>      }
>      object_unref(OBJECT(ioc));
> diff --git a/migration/yank_functions.c b/migration/yank_functions.c
> new file mode 100644
> index 0000000000..96c90e17dc
> --- /dev/null
> +++ b/migration/yank_functions.c
> @@ -0,0 +1,20 @@
> +/*
> + * migration yank functions
> + *
> + * Copyright (c) Lukas Straub <lukasstraub2@web.de>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or
> later.
> + * See the COPYING file in the top-level directory.
> + */
> +
> +#include "qemu/osdep.h"
> +#include "qapi/error.h"
> +#include "io/channel.h"
> +#include "yank_functions.h"
> +
> +void migration_yank_iochannel(void *opaque)
> +{
> +    QIOChannel *ioc = QIO_CHANNEL(opaque);
> +
> +    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
> +}
> diff --git a/migration/yank_functions.h b/migration/yank_functions.h
> new file mode 100644
> index 0000000000..055ea22523
> --- /dev/null
> +++ b/migration/yank_functions.h
> @@ -0,0 +1,17 @@
> +/*
> + * migration yank functions
> + *
> + * Copyright (c) Lukas Straub <lukasstraub2@web.de>
> + *
> + * This work is licensed under the terms of the GNU GPL, version 2 or
> later.
> + * See the COPYING file in the top-level directory.
> + */
> +
> +/**
> + * migration_yank_iochannel: yank function for iochannel
> + *
> + * This yank function will call qio_channel_shutdown on the provided
> QIOChannel.
> + *
> + * @opaque: QIOChannel to shutdown
> + */
> +void migration_yank_iochannel(void *opaque);
> diff --git a/stubs/yank.c b/stubs/yank.c
> index 6090416065..11b24fc057 100644
> --- a/stubs/yank.c
> +++ b/stubs/yank.c
> @@ -21,9 +21,3 @@ void yank_unregister_function(const YankInstance
> *instance,
>                                void *opaque)
>  {
>  }
> -
> -void yank_generic_iochannel(void *opaque)
> -{
> -}
> -
> -
> diff --git a/util/yank.c b/util/yank.c
> index fc08f65209..abf47c346d 100644
> --- a/util/yank.c
> +++ b/util/yank.c
> @@ -15,7 +15,6 @@
>  #include "qapi/qapi-commands-yank.h"
>  #include "qapi/qapi-visit-yank.h"
>  #include "qapi/clone-visitor.h"
> -#include "io/channel.h"
>  #include "qemu/yank.h"
>
>  struct YankFuncAndParam {
> @@ -151,13 +150,6 @@ void yank_unregister_function(const YankInstance
> *instance,
>      abort();
>  }
>
> -void yank_generic_iochannel(void *opaque)
> -{
> -    QIOChannel *ioc = QIO_CHANNEL(opaque);
> -
> -    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
> -}
> -
>  void qmp_yank(YankInstanceList *instances,
>                Error **errp)
>  {
> --
> 2.30.2
>
>
diff mbox series

Patch

diff --git a/MAINTAINERS b/MAINTAINERS
index 9147e9a429..455775c4a3 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2821,6 +2821,7 @@  M: Lukas Straub <lukasstraub2@web.de>
 S: Odd fixes
 F: util/yank.c
 F: stubs/yank.c
+F: migration/yank_functions*
 F: include/qemu/yank.h
 F: qapi/yank.json

diff --git a/chardev/char-socket.c b/chardev/char-socket.c
index f618bdec28..1d455ecca4 100644
--- a/chardev/char-socket.c
+++ b/chardev/char-socket.c
@@ -402,6 +402,13 @@  static void remove_hup_source(SocketChardev *s)
     }
 }

+static void char_socket_yank_iochannel(void *opaque)
+{
+    QIOChannel *ioc = QIO_CHANNEL(opaque);
+
+    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
+}
+
 static void tcp_chr_free_connection(Chardev *chr)
 {
     SocketChardev *s = SOCKET_CHARDEV(chr);
@@ -424,7 +431,7 @@  static void tcp_chr_free_connection(Chardev *chr)
         (s->state == TCP_CHARDEV_STATE_CONNECTING
         || s->state == TCP_CHARDEV_STATE_CONNECTED)) {
         yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label),
-                                 yank_generic_iochannel,
+                                 char_socket_yank_iochannel,
                                  QIO_CHANNEL(s->sioc));
     }
     object_unref(OBJECT(s->sioc));
@@ -946,7 +953,7 @@  static int tcp_chr_add_client(Chardev *chr, int fd)
     tcp_chr_set_client_ioc_name(chr, sioc);
     if (s->registered_yank) {
         yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
-                               yank_generic_iochannel,
+                               char_socket_yank_iochannel,
                                QIO_CHANNEL(sioc));
     }
     ret = tcp_chr_new_client(chr, sioc);
@@ -965,7 +972,7 @@  static void tcp_chr_accept(QIONetListener *listener,
     tcp_chr_set_client_ioc_name(chr, cioc);
     if (s->registered_yank) {
         yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
-                               yank_generic_iochannel,
+                               char_socket_yank_iochannel,
                                QIO_CHANNEL(cioc));
     }
     tcp_chr_new_client(chr, cioc);
@@ -985,7 +992,7 @@  static int tcp_chr_connect_client_sync(Chardev *chr, Error **errp)
     }
     if (s->registered_yank) {
         yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
-                               yank_generic_iochannel,
+                               char_socket_yank_iochannel,
                                QIO_CHANNEL(sioc));
     }
     tcp_chr_new_client(chr, sioc);
@@ -1005,7 +1012,7 @@  static void tcp_chr_accept_server_sync(Chardev *chr)
     tcp_chr_set_client_ioc_name(chr, sioc);
     if (s->registered_yank) {
         yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
-                               yank_generic_iochannel,
+                               char_socket_yank_iochannel,
                                QIO_CHANNEL(sioc));
     }
     tcp_chr_new_client(chr, sioc);
@@ -1138,7 +1145,7 @@  static void qemu_chr_socket_connected(QIOTask *task, void *opaque)
         tcp_chr_change_state(s, TCP_CHARDEV_STATE_DISCONNECTED);
         if (s->registered_yank) {
             yank_unregister_function(CHARDEV_YANK_INSTANCE(chr->label),
-                                     yank_generic_iochannel,
+                                     char_socket_yank_iochannel,
                                      QIO_CHANNEL(sioc));
         }
         check_report_connect_error(chr, err);
@@ -1176,7 +1183,7 @@  static void tcp_chr_connect_client_async(Chardev *chr)
     tcp_chr_set_client_ioc_name(chr, sioc);
     if (s->registered_yank) {
         yank_register_function(CHARDEV_YANK_INSTANCE(chr->label),
-                               yank_generic_iochannel,
+                               char_socket_yank_iochannel,
                                QIO_CHANNEL(sioc));
     }
     /*
diff --git a/include/qemu/yank.h b/include/qemu/yank.h
index 5b93c70cbf..5375a1f195 100644
--- a/include/qemu/yank.h
+++ b/include/qemu/yank.h
@@ -73,16 +73,6 @@  void yank_unregister_function(const YankInstance *instance,
                               YankFn *func,
                               void *opaque);

-/**
- * yank_generic_iochannel: Generic yank function for iochannel
- *
- * This is a generic yank function which will call qio_channel_shutdown on the
- * provided QIOChannel.
- *
- * @opaque: QIOChannel to shutdown
- */
-void yank_generic_iochannel(void *opaque);
-
 #define BLOCKDEV_YANK_INSTANCE(the_node_name) (&(YankInstance) { \
         .type = YANK_INSTANCE_TYPE_BLOCK_NODE, \
         .u.block_node.node_name = (the_node_name) })
diff --git a/migration/channel.c b/migration/channel.c
index 35fe234e9c..c9ee902021 100644
--- a/migration/channel.c
+++ b/migration/channel.c
@@ -20,6 +20,7 @@ 
 #include "io/channel-tls.h"
 #include "io/channel-socket.h"
 #include "qemu/yank.h"
+#include "yank_functions.h"

 /**
  * @migration_channel_process_incoming - Create new incoming migration channel
@@ -38,7 +39,8 @@  void migration_channel_process_incoming(QIOChannel *ioc)
         ioc, object_get_typename(OBJECT(ioc)));

     if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) {
-        yank_register_function(MIGRATION_YANK_INSTANCE, yank_generic_iochannel,
+        yank_register_function(MIGRATION_YANK_INSTANCE,
+                               migration_yank_iochannel,
                                QIO_CHANNEL(ioc));
     }

@@ -76,7 +78,7 @@  void migration_channel_connect(MigrationState *s,
     if (!error) {
         if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)) {
             yank_register_function(MIGRATION_YANK_INSTANCE,
-                                   yank_generic_iochannel,
+                                   migration_yank_iochannel,
                                    QIO_CHANNEL(ioc));
         }

diff --git a/migration/meson.build b/migration/meson.build
index 9645f44005..2cfa8eed72 100644
--- a/migration/meson.build
+++ b/migration/meson.build
@@ -6,6 +6,7 @@  migration_files = files(
   'vmstate.c',
   'qemu-file-channel.c',
   'qemu-file.c',
+  'yank_functions.c',
 )
 softmmu_ss.add(migration_files)

diff --git a/migration/multifd.c b/migration/multifd.c
index 03527c564c..a6677c45c8 100644
--- a/migration/multifd.c
+++ b/migration/multifd.c
@@ -27,6 +27,7 @@ 

 #include "qemu/yank.h"
 #include "io/channel-socket.h"
+#include "yank_functions.h"

 /* Multiple fd's */

@@ -989,7 +990,7 @@  int multifd_load_cleanup(Error **errp)
         if (object_dynamic_cast(OBJECT(p->c), TYPE_QIO_CHANNEL_SOCKET)
             && OBJECT(p->c)->ref == 1) {
             yank_unregister_function(MIGRATION_YANK_INSTANCE,
-                                     yank_generic_iochannel,
+                                     migration_yank_iochannel,
                                      QIO_CHANNEL(p->c));
         }

diff --git a/migration/qemu-file-channel.c b/migration/qemu-file-channel.c
index afc3a7f642..876d05a540 100644
--- a/migration/qemu-file-channel.c
+++ b/migration/qemu-file-channel.c
@@ -28,6 +28,7 @@ 
 #include "io/channel-socket.h"
 #include "qemu/iov.h"
 #include "qemu/yank.h"
+#include "yank_functions.h"


 static ssize_t channel_writev_buffer(void *opaque,
@@ -108,7 +109,7 @@  static int channel_close(void *opaque, Error **errp)
     if (object_dynamic_cast(OBJECT(ioc), TYPE_QIO_CHANNEL_SOCKET)
         && OBJECT(ioc)->ref == 1) {
         yank_unregister_function(MIGRATION_YANK_INSTANCE,
-                                 yank_generic_iochannel,
+                                 migration_yank_iochannel,
                                  QIO_CHANNEL(ioc));
     }
     object_unref(OBJECT(ioc));
diff --git a/migration/yank_functions.c b/migration/yank_functions.c
new file mode 100644
index 0000000000..96c90e17dc
--- /dev/null
+++ b/migration/yank_functions.c
@@ -0,0 +1,20 @@ 
+/*
+ * migration yank functions
+ *
+ * Copyright (c) Lukas Straub <lukasstraub2@web.de>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "io/channel.h"
+#include "yank_functions.h"
+
+void migration_yank_iochannel(void *opaque)
+{
+    QIOChannel *ioc = QIO_CHANNEL(opaque);
+
+    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
+}
diff --git a/migration/yank_functions.h b/migration/yank_functions.h
new file mode 100644
index 0000000000..055ea22523
--- /dev/null
+++ b/migration/yank_functions.h
@@ -0,0 +1,17 @@ 
+/*
+ * migration yank functions
+ *
+ * Copyright (c) Lukas Straub <lukasstraub2@web.de>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ */
+
+/**
+ * migration_yank_iochannel: yank function for iochannel
+ *
+ * This yank function will call qio_channel_shutdown on the provided QIOChannel.
+ *
+ * @opaque: QIOChannel to shutdown
+ */
+void migration_yank_iochannel(void *opaque);
diff --git a/stubs/yank.c b/stubs/yank.c
index 6090416065..11b24fc057 100644
--- a/stubs/yank.c
+++ b/stubs/yank.c
@@ -21,9 +21,3 @@  void yank_unregister_function(const YankInstance *instance,
                               void *opaque)
 {
 }
-
-void yank_generic_iochannel(void *opaque)
-{
-}
-
-
diff --git a/util/yank.c b/util/yank.c
index fc08f65209..abf47c346d 100644
--- a/util/yank.c
+++ b/util/yank.c
@@ -15,7 +15,6 @@ 
 #include "qapi/qapi-commands-yank.h"
 #include "qapi/qapi-visit-yank.h"
 #include "qapi/clone-visitor.h"
-#include "io/channel.h"
 #include "qemu/yank.h"

 struct YankFuncAndParam {
@@ -151,13 +150,6 @@  void yank_unregister_function(const YankInstance *instance,
     abort();
 }

-void yank_generic_iochannel(void *opaque)
-{
-    QIOChannel *ioc = QIO_CHANNEL(opaque);
-
-    qio_channel_shutdown(ioc, QIO_CHANNEL_SHUTDOWN_BOTH, NULL);
-}
-
 void qmp_yank(YankInstanceList *instances,
               Error **errp)
 {