[PATCH 24/40] vdpa: factor out vhost_vdpa_dma_batch_end

[Si-Wei Liu <si-wei.liu@oracle.com>]

Refactoring only. No functional change.

Signed-off-by: Si-Wei Liu <si-wei.liu@oracle.com>
---
 hw/virtio/trace-events |  2 +-
 hw/virtio/vhost-vdpa.c | 30 ++++++++++++++++++------------
 2 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/hw/virtio/trace-events b/hw/virtio/trace-events
index b0239b8..3411a07 100644
--- a/hw/virtio/trace-events
+++ b/hw/virtio/trace-events
@@ -33,7 +33,7 @@ vhost_user_create_notifier(int idx, void *n) "idx:%d n:%p"
 vhost_vdpa_dma_map(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, uint64_t iova, uint64_t size, uint64_t uaddr, uint8_t perm, uint8_t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" uaddr: 0x%"PRIx64" perm: 0x%"PRIx8" type: %"PRIu8
 vhost_vdpa_dma_unmap(void *vdpa, int fd, uint32_t msg_type, uint32_t asid, uint64_t iova, uint64_t size, uint8_t type) "vdpa_shared:%p fd: %d msg_type: %"PRIu32" asid: %"PRIu32" iova: 0x%"PRIx64" size: 0x%"PRIx64" type: %"PRIu8
 vhost_vdpa_map_batch_begin(void *v, int fd, uint32_t msg_type, uint8_t type)  "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8
-vhost_vdpa_listener_commit(void *v, int fd, uint32_t msg_type, uint8_t type)  "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8
+vhost_vdpa_dma_batch_end(void *v, int fd, uint32_t msg_type, uint8_t type)  "vdpa_shared:%p fd: %d msg_type: %"PRIu32" type: %"PRIu8
 vhost_vdpa_listener_region_add_unaligned(void *v, const char *name, uint64_t offset_as, uint64_t offset_page) "vdpa_shared: %p region %s offset_within_address_space %"PRIu64" offset_within_region %"PRIu64
 vhost_vdpa_listener_region_add(void *vdpa, uint64_t iova, uint64_t llend, void *vaddr, bool readonly) "vdpa: %p iova 0x%"PRIx64" llend 0x%"PRIx64" vaddr: %p read-only: %d"
 vhost_vdpa_listener_region_del_unaligned(void *v, const char *name, uint64_t offset_as, uint64_t offset_page) "vdpa_shared: %p region %s offset_within_address_space %"PRIu64" offset_within_region %"PRIu64
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index a6c6fe5..999a97a 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -198,19 +198,11 @@ static void vhost_vdpa_dma_batch_begin_once(VhostVDPAShared *s)
     }
 }
 
-static void vhost_vdpa_dma_batch_end_once(VhostVDPAShared *s)
+static bool vhost_vdpa_dma_batch_end(VhostVDPAShared *s)
 {
     struct vhost_msg_v2 msg = {};
     int fd = s->device_fd;
 
-    if (!(s->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) {
-        return;
-    }
-
-    if (!s->iotlb_batch_begin_sent) {
-        return;
-    }
-
     msg.type = VHOST_IOTLB_MSG_V2;
     msg.iotlb.type = VHOST_IOTLB_BATCH_END;
 
@@ -220,16 +212,30 @@ static void vhost_vdpa_dma_batch_end_once(VhostVDPAShared *s)
         *new_msg = msg;
         g_async_queue_push(s->map_queue, new_msg);
 
-        return;
+        return false;
     }
 
-    trace_vhost_vdpa_listener_commit(s, fd, msg.type, msg.iotlb.type);
+    trace_vhost_vdpa_dma_batch_end(s, fd, msg.type, msg.iotlb.type);
     if (write(fd, &msg, sizeof(msg)) != sizeof(msg)) {
         error_report("failed to write, fd=%d, errno=%d (%s)",
                      fd, errno, strerror(errno));
     }
+    return true;
+}
+
+static void vhost_vdpa_dma_batch_end_once(VhostVDPAShared *s)
+{
+    if (!(s->backend_cap & (0x1ULL << VHOST_BACKEND_F_IOTLB_BATCH))) {
+        return;
+    }
+
+    if (!s->iotlb_batch_begin_sent) {
+        return;
+    }
 
-    s->iotlb_batch_begin_sent = false;
+    if (vhost_vdpa_dma_batch_end(s)) {
+        s->iotlb_batch_begin_sent = false;
+    }
 }
 
 static void vhost_vdpa_listener_commit(MemoryListener *listener)
-- 
1.8.3.1