[PATCH v10 08/12] vfio/migration: Rename functions/structs related to v1 protocol

[Avihai Horon <avihaih@nvidia.com>]

To avoid name collisions, rename functions and structs related to VFIO
migration protocol v1. This will allow the two protocols to co-exist
when v2 protocol is added, until v1 is removed. No functional changes
intended.

Signed-off-by: Avihai Horon <avihaih@nvidia.com>
Reviewed-by: Cédric Le Goater <clg@redhat.com>
---
 include/hw/vfio/vfio-common.h |   2 +-
 hw/vfio/common.c              |   6 +-
 hw/vfio/migration.c           | 107 +++++++++++++++++-----------------
 hw/vfio/trace-events          |  12 ++--
 4 files changed, 63 insertions(+), 64 deletions(-)

diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 56b1683824..2c0fb1d622 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -62,7 +62,7 @@ typedef struct VFIOMigration {
     struct VFIODevice *vbasedev;
     VMChangeStateEntry *vm_state;
     VFIORegion region;
-    uint32_t device_state;
+    uint32_t device_state_v1;
     int vm_running;
     Notifier migration_state;
     uint64_t pending_bytes;
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index fe80ccf914..1c974e9c5a 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -408,8 +408,8 @@ static bool vfio_devices_all_dirty_tracking(VFIOContainer *container)
                 return false;
             }
 
-            if ((vbasedev->pre_copy_dirty_page_tracking == ON_OFF_AUTO_OFF)
-                && (migration->device_state & VFIO_DEVICE_STATE_V1_RUNNING)) {
+            if ((vbasedev->pre_copy_dirty_page_tracking == ON_OFF_AUTO_OFF) &&
+                (migration->device_state_v1 & VFIO_DEVICE_STATE_V1_RUNNING)) {
                 return false;
             }
         }
@@ -438,7 +438,7 @@ static bool vfio_devices_all_running_and_mig_active(VFIOContainer *container)
                 return false;
             }
 
-            if (migration->device_state & VFIO_DEVICE_STATE_V1_RUNNING) {
+            if (migration->device_state_v1 & VFIO_DEVICE_STATE_V1_RUNNING) {
                 continue;
             } else {
                 return false;
diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index ca64551cc9..6b5a00d2ad 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -107,8 +107,8 @@ static int vfio_mig_rw(VFIODevice *vbasedev, __u8 *buf, size_t count,
  * an error is returned.
  */
 
-static int vfio_migration_set_state(VFIODevice *vbasedev, uint32_t mask,
-                                    uint32_t value)
+static int vfio_migration_v1_set_state(VFIODevice *vbasedev, uint32_t mask,
+                                       uint32_t value)
 {
     VFIOMigration *migration = vbasedev->migration;
     VFIORegion *region = &migration->region;
@@ -145,8 +145,8 @@ static int vfio_migration_set_state(VFIODevice *vbasedev, uint32_t mask,
         return ret;
     }
 
-    migration->device_state = device_state;
-    trace_vfio_migration_set_state(vbasedev->name, device_state);
+    migration->device_state_v1 = device_state;
+    trace_vfio_migration_v1_set_state(vbasedev->name, device_state);
     return 0;
 }
 
@@ -260,8 +260,8 @@ static int vfio_save_buffer(QEMUFile *f, VFIODevice *vbasedev, uint64_t *size)
     return ret;
 }
 
-static int vfio_load_buffer(QEMUFile *f, VFIODevice *vbasedev,
-                            uint64_t data_size)
+static int vfio_v1_load_buffer(QEMUFile *f, VFIODevice *vbasedev,
+                               uint64_t data_size)
 {
     VFIORegion *region = &vbasedev->migration->region;
     uint64_t data_offset = 0, size, report_size;
@@ -288,7 +288,7 @@ static int vfio_load_buffer(QEMUFile *f, VFIODevice *vbasedev,
             data_size = 0;
         }
 
-        trace_vfio_load_state_device_data(vbasedev->name, data_offset, size);
+        trace_vfio_v1_load_state_device_data(vbasedev->name, data_offset, size);
 
         while (size) {
             void *buf;
@@ -394,7 +394,7 @@ static int vfio_load_device_config_state(QEMUFile *f, void *opaque)
     return qemu_file_get_error(f);
 }
 
-static void vfio_migration_cleanup(VFIODevice *vbasedev)
+static void vfio_migration_v1_cleanup(VFIODevice *vbasedev)
 {
     VFIOMigration *migration = vbasedev->migration;
 
@@ -405,13 +405,13 @@ static void vfio_migration_cleanup(VFIODevice *vbasedev)
 
 /* ---------------------------------------------------------------------- */
 
-static int vfio_save_setup(QEMUFile *f, void *opaque)
+static int vfio_v1_save_setup(QEMUFile *f, void *opaque)
 {
     VFIODevice *vbasedev = opaque;
     VFIOMigration *migration = vbasedev->migration;
     int ret;
 
-    trace_vfio_save_setup(vbasedev->name);
+    trace_vfio_v1_save_setup(vbasedev->name);
 
     qemu_put_be64(f, VFIO_MIG_FLAG_DEV_SETUP_STATE);
 
@@ -431,8 +431,8 @@ static int vfio_save_setup(QEMUFile *f, void *opaque)
         }
     }
 
-    ret = vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_MASK,
-                                   VFIO_DEVICE_STATE_V1_SAVING);
+    ret = vfio_migration_v1_set_state(vbasedev, VFIO_DEVICE_STATE_MASK,
+                                      VFIO_DEVICE_STATE_V1_SAVING);
     if (ret) {
         error_report("%s: Failed to set state SAVING", vbasedev->name);
         return ret;
@@ -448,18 +448,17 @@ static int vfio_save_setup(QEMUFile *f, void *opaque)
     return 0;
 }
 
-static void vfio_save_cleanup(void *opaque)
+static void vfio_v1_save_cleanup(void *opaque)
 {
     VFIODevice *vbasedev = opaque;
 
-    vfio_migration_cleanup(vbasedev);
+    vfio_migration_v1_cleanup(vbasedev);
     trace_vfio_save_cleanup(vbasedev->name);
 }
 
-static void vfio_state_pending(void *opaque,
-                               uint64_t *res_precopy_only,
-                               uint64_t *res_compatible,
-                               uint64_t *res_postcopy_only)
+static void vfio_v1_state_pending(void *opaque, uint64_t *res_precopy_only,
+                                  uint64_t *res_compatible,
+                                  uint64_t *res_postcopy_only)
 {
     VFIODevice *vbasedev = opaque;
     VFIOMigration *migration = vbasedev->migration;
@@ -472,8 +471,8 @@ static void vfio_state_pending(void *opaque,
 
     *res_precopy_only += migration->pending_bytes;
 
-    trace_vfio_state_pending(vbasedev->name, *res_precopy_only,
-                            *res_postcopy_only, *res_compatible);
+    trace_vfio_v1_state_pending(vbasedev->name, *res_precopy_only,
+                                *res_postcopy_only, *res_compatible);
 }
 
 static int vfio_save_iterate(QEMUFile *f, void *opaque)
@@ -523,15 +522,15 @@ static int vfio_save_iterate(QEMUFile *f, void *opaque)
     return 0;
 }
 
-static int vfio_save_complete_precopy(QEMUFile *f, void *opaque)
+static int vfio_v1_save_complete_precopy(QEMUFile *f, void *opaque)
 {
     VFIODevice *vbasedev = opaque;
     VFIOMigration *migration = vbasedev->migration;
     uint64_t data_size;
     int ret;
 
-    ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_V1_RUNNING,
-                                   VFIO_DEVICE_STATE_V1_SAVING);
+    ret = vfio_migration_v1_set_state(vbasedev, ~VFIO_DEVICE_STATE_V1_RUNNING,
+                                      VFIO_DEVICE_STATE_V1_SAVING);
     if (ret) {
         error_report("%s: Failed to set state STOP and SAVING",
                      vbasedev->name);
@@ -568,13 +567,14 @@ static int vfio_save_complete_precopy(QEMUFile *f, void *opaque)
         return ret;
     }
 
-    ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_V1_SAVING, 0);
+    ret = vfio_migration_v1_set_state(vbasedev, ~VFIO_DEVICE_STATE_V1_SAVING,
+                                      0);
     if (ret) {
         error_report("%s: Failed to set state STOPPED", vbasedev->name);
         return ret;
     }
 
-    trace_vfio_save_complete_precopy(vbasedev->name);
+    trace_vfio_v1_save_complete_precopy(vbasedev->name);
     return ret;
 }
 
@@ -591,7 +591,7 @@ static void vfio_save_state(QEMUFile *f, void *opaque)
     }
 }
 
-static int vfio_load_setup(QEMUFile *f, void *opaque)
+static int vfio_v1_load_setup(QEMUFile *f, void *opaque)
 {
     VFIODevice *vbasedev = opaque;
     VFIOMigration *migration = vbasedev->migration;
@@ -607,8 +607,8 @@ static int vfio_load_setup(QEMUFile *f, void *opaque)
         }
     }
 
-    ret = vfio_migration_set_state(vbasedev, ~VFIO_DEVICE_STATE_MASK,
-                                   VFIO_DEVICE_STATE_V1_RESUMING);
+    ret = vfio_migration_v1_set_state(vbasedev, ~VFIO_DEVICE_STATE_MASK,
+                                      VFIO_DEVICE_STATE_V1_RESUMING);
     if (ret) {
         error_report("%s: Failed to set state RESUMING", vbasedev->name);
         if (migration->region.mmaps) {
@@ -618,11 +618,11 @@ static int vfio_load_setup(QEMUFile *f, void *opaque)
     return ret;
 }
 
-static int vfio_load_cleanup(void *opaque)
+static int vfio_v1_load_cleanup(void *opaque)
 {
     VFIODevice *vbasedev = opaque;
 
-    vfio_migration_cleanup(vbasedev);
+    vfio_migration_v1_cleanup(vbasedev);
     trace_vfio_load_cleanup(vbasedev->name);
     return 0;
 }
@@ -660,7 +660,7 @@ static int vfio_load_state(QEMUFile *f, void *opaque, int version_id)
             uint64_t data_size = qemu_get_be64(f);
 
             if (data_size) {
-                ret = vfio_load_buffer(f, vbasedev, data_size);
+                ret = vfio_v1_load_buffer(f, vbasedev, data_size);
                 if (ret < 0) {
                     return ret;
                 }
@@ -681,22 +681,22 @@ static int vfio_load_state(QEMUFile *f, void *opaque, int version_id)
     return ret;
 }
 
-static SaveVMHandlers savevm_vfio_handlers = {
-    .save_setup = vfio_save_setup,
-    .save_cleanup = vfio_save_cleanup,
-    .state_pending_exact = vfio_state_pending,
-    .state_pending_estimate = vfio_state_pending,
+static SaveVMHandlers savevm_vfio_v1_handlers = {
+    .save_setup = vfio_v1_save_setup,
+    .save_cleanup = vfio_v1_save_cleanup,
+    .state_pending_exact = vfio_v1_state_pending,
+    .state_pending_estimate = vfio_v1_state_pending,
     .save_live_iterate = vfio_save_iterate,
-    .save_live_complete_precopy = vfio_save_complete_precopy,
+    .save_live_complete_precopy = vfio_v1_save_complete_precopy,
     .save_state = vfio_save_state,
-    .load_setup = vfio_load_setup,
-    .load_cleanup = vfio_load_cleanup,
+    .load_setup = vfio_v1_load_setup,
+    .load_cleanup = vfio_v1_load_cleanup,
     .load_state = vfio_load_state,
 };
 
 /* ---------------------------------------------------------------------- */
 
-static void vfio_vmstate_change(void *opaque, bool running, RunState state)
+static void vfio_v1_vmstate_change(void *opaque, bool running, RunState state)
 {
     VFIODevice *vbasedev = opaque;
     VFIOMigration *migration = vbasedev->migration;
@@ -736,21 +736,21 @@ static void vfio_vmstate_change(void *opaque, bool running, RunState state)
         }
     }
 
-    ret = vfio_migration_set_state(vbasedev, mask, value);
+    ret = vfio_migration_v1_set_state(vbasedev, mask, value);
     if (ret) {
         /*
          * Migration should be aborted in this case, but vm_state_notify()
          * currently does not support reporting failures.
          */
         error_report("%s: Failed to set device state 0x%x", vbasedev->name,
-                     (migration->device_state & mask) | value);
+                     (migration->device_state_v1 & mask) | value);
         if (migrate_get_current()->to_dst_file) {
             qemu_file_set_error(migrate_get_current()->to_dst_file, ret);
         }
     }
     vbasedev->migration->vm_running = running;
-    trace_vfio_vmstate_change(vbasedev->name, running, RunState_str(state),
-            (migration->device_state & mask) | value);
+    trace_vfio_v1_vmstate_change(vbasedev->name, running, RunState_str(state),
+            (migration->device_state_v1 & mask) | value);
 }
 
 static void vfio_migration_state_notifier(Notifier *notifier, void *data)
@@ -769,10 +769,10 @@ static void vfio_migration_state_notifier(Notifier *notifier, void *data)
     case MIGRATION_STATUS_CANCELLED:
     case MIGRATION_STATUS_FAILED:
         bytes_transferred = 0;
-        ret = vfio_migration_set_state(vbasedev,
-                                       ~(VFIO_DEVICE_STATE_V1_SAVING |
-                                         VFIO_DEVICE_STATE_V1_RESUMING),
-                                       VFIO_DEVICE_STATE_V1_RUNNING);
+        ret = vfio_migration_v1_set_state(vbasedev,
+                                          ~(VFIO_DEVICE_STATE_V1_SAVING |
+                                            VFIO_DEVICE_STATE_V1_RESUMING),
+                                          VFIO_DEVICE_STATE_V1_RUNNING);
         if (ret) {
             error_report("%s: Failed to set state RUNNING", vbasedev->name);
         }
@@ -816,7 +816,7 @@ static int vfio_migration_init(VFIODevice *vbasedev)
     }
 
     vbasedev->migration = g_new0(VFIOMigration, 1);
-    vbasedev->migration->device_state = VFIO_DEVICE_STATE_V1_RUNNING;
+    vbasedev->migration->device_state_v1 = VFIO_DEVICE_STATE_V1_RUNNING;
     vbasedev->migration->vm_running = runstate_is_running();
 
     ret = vfio_region_setup(obj, vbasedev, &vbasedev->migration->region,
@@ -847,12 +847,11 @@ static int vfio_migration_init(VFIODevice *vbasedev)
     }
     strpadcpy(id, sizeof(id), path, '\0');
 
-    register_savevm_live(id, VMSTATE_INSTANCE_ID_ANY, 1, &savevm_vfio_handlers,
-                         vbasedev);
+    register_savevm_live(id, VMSTATE_INSTANCE_ID_ANY, 1,
+                         &savevm_vfio_v1_handlers, vbasedev);
 
-    migration->vm_state = qdev_add_vm_change_state_handler(vbasedev->dev,
-                                                           vfio_vmstate_change,
-                                                           vbasedev);
+    migration->vm_state = qdev_add_vm_change_state_handler(
+        vbasedev->dev, vfio_v1_vmstate_change, vbasedev);
     migration->migration_state.notify = vfio_migration_state_notifier;
     add_migration_state_change_notifier(&migration->migration_state);
     return 0;
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 8badd76034..173613d2a8 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -149,20 +149,20 @@ vfio_display_edid_write_error(void) ""
 
 # migration.c
 vfio_migration_probe(const char *name) " (%s)"
-vfio_migration_set_state(const char *name, uint32_t state) " (%s) state %d"
-vfio_vmstate_change(const char *name, int running, const char *reason, uint32_t dev_state) " (%s) running %d reason %s device state %d"
+vfio_migration_v1_set_state(const char *name, uint32_t state) " (%s) state %d"
+vfio_v1_vmstate_change(const char *name, int running, const char *reason, uint32_t dev_state) " (%s) running %d reason %s device state %d"
 vfio_migration_state_notifier(const char *name, const char *state) " (%s) state %s"
-vfio_save_setup(const char *name) " (%s)"
+vfio_v1_save_setup(const char *name) " (%s)"
 vfio_save_cleanup(const char *name) " (%s)"
 vfio_save_buffer(const char *name, uint64_t data_offset, uint64_t data_size, uint64_t pending) " (%s) Offset 0x%"PRIx64" size 0x%"PRIx64" pending 0x%"PRIx64
 vfio_update_pending(const char *name, uint64_t pending) " (%s) pending 0x%"PRIx64
 vfio_save_device_config_state(const char *name) " (%s)"
-vfio_state_pending(const char *name, uint64_t precopy, uint64_t postcopy, uint64_t compatible) " (%s) precopy 0x%"PRIx64" postcopy 0x%"PRIx64" compatible 0x%"PRIx64
+vfio_v1_state_pending(const char *name, uint64_t precopy, uint64_t postcopy, uint64_t compatible) " (%s) precopy 0x%"PRIx64" postcopy 0x%"PRIx64" compatible 0x%"PRIx64
 vfio_save_iterate(const char *name, int data_size) " (%s) data_size %d"
-vfio_save_complete_precopy(const char *name) " (%s)"
+vfio_v1_save_complete_precopy(const char *name) " (%s)"
 vfio_load_device_config_state(const char *name) " (%s)"
 vfio_load_state(const char *name, uint64_t data) " (%s) data 0x%"PRIx64
-vfio_load_state_device_data(const char *name, uint64_t data_offset, uint64_t data_size) " (%s) Offset 0x%"PRIx64" size 0x%"PRIx64
+vfio_v1_load_state_device_data(const char *name, uint64_t data_offset, uint64_t data_size) " (%s) Offset 0x%"PRIx64" size 0x%"PRIx64
 vfio_load_cleanup(const char *name) " (%s)"
 vfio_get_dirty_bitmap(int fd, uint64_t iova, uint64_t size, uint64_t bitmap_size, uint64_t start) "container fd=%d, iova=0x%"PRIx64" size= 0x%"PRIx64" bitmap_size=0x%"PRIx64" start=0x%"PRIx64
 vfio_iommu_map_dirty_notify(uint64_t iova_start, uint64_t iova_end) "iommu dirty @ 0x%"PRIx64" - 0x%"PRIx64
-- 
2.26.3