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Tsirkin" , Jason Wang , Alex Williamson , Cedric Le Goater , Gerd Hoffmann , Marc-Andre Lureau , David Hildenbrand , Steve Sistare Subject: [PATCH V3 03/13] migration: convert to NotifierWithReturn Date: Thu, 8 Feb 2024 10:53:56 -0800 Message-Id: <1707418446-134863-4-git-send-email-steven.sistare@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1707418446-134863-1-git-send-email-steven.sistare@oracle.com> References: <1707418446-134863-1-git-send-email-steven.sistare@oracle.com> X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-08_08,2024-02-08_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 malwarescore=0 spamscore=0 mlxlogscore=999 bulkscore=0 mlxscore=0 phishscore=0 adultscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402080099 X-Proofpoint-GUID: J_ara4h-pEvXhu1Fo9r_ApjEGFK1-Nhp X-Proofpoint-ORIG-GUID: J_ara4h-pEvXhu1Fo9r_ApjEGFK1-Nhp Received-SPF: pass client-ip=205.220.165.32; envelope-from=steven.sistare@oracle.com; helo=mx0a-00069f02.pphosted.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_MED=-0.001, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Change all migration notifiers to type NotifierWithReturn, so notifiers can return an error status in a future patch. For now, pass NULL for the notifier error parameter, and do not check the return value. Signed-off-by: Steve Sistare Reviewed-by: Peter Xu Reviewed-by: David Hildenbrand --- hw/net/virtio-net.c | 4 +++- hw/vfio/migration.c | 4 +++- include/hw/vfio/vfio-common.h | 2 +- include/hw/virtio/virtio-net.h | 2 +- include/migration/misc.h | 6 +++--- include/qemu/notify.h | 1 + migration/migration.c | 16 ++++++++-------- net/vhost-vdpa.c | 6 ++++-- ui/spice-core.c | 8 +++++--- 9 files changed, 29 insertions(+), 20 deletions(-) diff --git a/hw/net/virtio-net.c b/hw/net/virtio-net.c index 5a79bc3..75f4e86 100644 --- a/hw/net/virtio-net.c +++ b/hw/net/virtio-net.c @@ -3534,11 +3534,13 @@ static void virtio_net_handle_migration_primary(VirtIONet *n, MigrationState *s) } } -static void virtio_net_migration_state_notifier(Notifier *notifier, void *data) +static int virtio_net_migration_state_notifier(NotifierWithReturn *notifier, + void *data, Error **errp) { MigrationState *s = data; VirtIONet *n = container_of(notifier, VirtIONet, migration_state); virtio_net_handle_migration_primary(n, s); + return 0; } static bool failover_hide_primary_device(DeviceListener *listener, diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 70e6b1a..6b6acc4 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -754,7 +754,8 @@ static void vfio_vmstate_change(void *opaque, bool running, RunState state) mig_state_to_str(new_state)); } -static void vfio_migration_state_notifier(Notifier *notifier, void *data) +static int vfio_migration_state_notifier(NotifierWithReturn *notifier, + void *data, Error **errp) { MigrationState *s = data; VFIOMigration *migration = container_of(notifier, VFIOMigration, @@ -770,6 +771,7 @@ static void vfio_migration_state_notifier(Notifier *notifier, void *data) case MIGRATION_STATUS_FAILED: vfio_migration_set_state_or_reset(vbasedev, VFIO_DEVICE_STATE_RUNNING); } + return 0; } static void vfio_migration_free(VFIODevice *vbasedev) diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index 9b7ef7d..4a6c262 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -62,7 +62,7 @@ typedef struct VFIORegion { typedef struct VFIOMigration { struct VFIODevice *vbasedev; VMChangeStateEntry *vm_state; - Notifier migration_state; + NotifierWithReturn migration_state; uint32_t device_state; int data_fd; void *data_buffer; diff --git a/include/hw/virtio/virtio-net.h b/include/hw/virtio/virtio-net.h index 55977f0..eaee8f4 100644 --- a/include/hw/virtio/virtio-net.h +++ b/include/hw/virtio/virtio-net.h @@ -221,7 +221,7 @@ struct VirtIONet { DeviceListener primary_listener; QDict *primary_opts; bool primary_opts_from_json; - Notifier migration_state; + NotifierWithReturn migration_state; VirtioNetRssData rss_data; struct NetRxPkt *rx_pkt; struct EBPFRSSContext ebpf_rss; diff --git a/include/migration/misc.h b/include/migration/misc.h index 5e65c18..b62e351 100644 --- a/include/migration/misc.h +++ b/include/migration/misc.h @@ -60,9 +60,9 @@ void migration_object_init(void); void migration_shutdown(void); bool migration_is_idle(void); bool migration_is_active(MigrationState *); -void migration_add_notifier(Notifier *notify, - void (*func)(Notifier *notifier, void *data)); -void migration_remove_notifier(Notifier *notify); +void migration_add_notifier(NotifierWithReturn *notify, + NotifierWithReturnFunc func); +void migration_remove_notifier(NotifierWithReturn *notify); void migration_call_notifiers(MigrationState *s); bool migration_in_setup(MigrationState *); bool migration_has_finished(MigrationState *); diff --git a/include/qemu/notify.h b/include/qemu/notify.h index 9a85631..abf18db 100644 --- a/include/qemu/notify.h +++ b/include/qemu/notify.h @@ -45,6 +45,7 @@ bool notifier_list_empty(NotifierList *list); /* Same as Notifier but allows .notify() to return errors */ typedef struct NotifierWithReturn NotifierWithReturn; +/* Return int to allow for different failure modes and recovery actions */ typedef int (*NotifierWithReturnFunc)(NotifierWithReturn *notifier, void *data, Error **errp); diff --git a/migration/migration.c b/migration/migration.c index d5f705c..ff9945b 100644 --- a/migration/migration.c +++ b/migration/migration.c @@ -68,8 +68,8 @@ #include "sysemu/dirtylimit.h" #include "qemu/sockets.h" -static NotifierList migration_state_notifiers = - NOTIFIER_LIST_INITIALIZER(migration_state_notifiers); +static NotifierWithReturnList migration_state_notifiers = + NOTIFIER_WITH_RETURN_LIST_INITIALIZER(migration_state_notifiers); /* Messages sent on the return path from destination to source */ enum mig_rp_message_type { @@ -1453,24 +1453,24 @@ static void migrate_fd_cancel(MigrationState *s) } } -void migration_add_notifier(Notifier *notify, - void (*func)(Notifier *notifier, void *data)) +void migration_add_notifier(NotifierWithReturn *notify, + NotifierWithReturnFunc func) { notify->notify = func; - notifier_list_add(&migration_state_notifiers, notify); + notifier_with_return_list_add(&migration_state_notifiers, notify); } -void migration_remove_notifier(Notifier *notify) +void migration_remove_notifier(NotifierWithReturn *notify) { if (notify->notify) { - notifier_remove(notify); + notifier_with_return_remove(notify); notify->notify = NULL; } } void migration_call_notifiers(MigrationState *s) { - notifier_list_notify(&migration_state_notifiers, s); + notifier_with_return_list_notify(&migration_state_notifiers, s, 0); } bool migration_in_setup(MigrationState *s) diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c index 3726ee5..1c00519 100644 --- a/net/vhost-vdpa.c +++ b/net/vhost-vdpa.c @@ -34,7 +34,7 @@ typedef struct VhostVDPAState { NetClientState nc; struct vhost_vdpa vhost_vdpa; - Notifier migration_state; + NotifierWithReturn migration_state; VHostNetState *vhost_net; /* Control commands shadow buffers */ @@ -322,7 +322,8 @@ static void vhost_vdpa_net_log_global_enable(VhostVDPAState *s, bool enable) } } -static void vdpa_net_migration_state_notifier(Notifier *notifier, void *data) +static int vdpa_net_migration_state_notifier(NotifierWithReturn *notifier, + void *data, Error **errp) { MigrationState *migration = data; VhostVDPAState *s = container_of(notifier, VhostVDPAState, @@ -333,6 +334,7 @@ static void vdpa_net_migration_state_notifier(Notifier *notifier, void *data) } else if (migration_has_failed(migration)) { vhost_vdpa_net_log_global_enable(s, false); } + return 0; } static void vhost_vdpa_net_data_start_first(VhostVDPAState *s) diff --git a/ui/spice-core.c b/ui/spice-core.c index 37b277f..b3cd229 100644 --- a/ui/spice-core.c +++ b/ui/spice-core.c @@ -42,7 +42,7 @@ /* core bits */ static SpiceServer *spice_server; -static Notifier migration_state; +static NotifierWithReturn migration_state; static const char *auth = "spice"; static char *auth_passwd; static time_t auth_expires = TIME_MAX; @@ -568,12 +568,13 @@ static SpiceInfo *qmp_query_spice_real(Error **errp) return info; } -static void migration_state_notifier(Notifier *notifier, void *data) +static int migration_state_notifier(NotifierWithReturn *notifier, + void *data, Error **errp) { MigrationState *s = data; if (!spice_have_target_host) { - return; + return 0; } if (migration_in_setup(s)) { @@ -586,6 +587,7 @@ static void migration_state_notifier(Notifier *notifier, void *data) spice_server_migrate_end(spice_server, false); spice_have_target_host = false; } + return 0; } int qemu_spice_migrate_info(const char *hostname, int port, int tls_port,