virtio: Factor virtqueue_map_sg out

[qemu.git] / hw / virtio.h

diff --git a/hw/virtio.h b/hw/virtio.h
index 5836ab61e7157377f5be8107c4e88b15c9a765f6..1deeb2cb9cee0147499dfc44ec60db4750da4e4e 100644 (file)
--- a/hw/virtio.h
+++ b/hw/virtio.h
@@ -81,6 +81,7 @@ typedef struct VirtQueueElement
     unsigned int out_num;
     unsigned int in_num;
     target_phys_addr_t in_addr[VIRTQUEUE_MAX_SIZE];
+    target_phys_addr_t out_addr[VIRTQUEUE_MAX_SIZE];
     struct iovec in_sg[VIRTQUEUE_MAX_SIZE];
     struct iovec out_sg[VIRTQUEUE_MAX_SIZE];
 } VirtQueueElement;
@@ -142,6 +143,8 @@ void virtqueue_flush(VirtQueue *vq, unsigned int count);
 void virtqueue_fill(VirtQueue *vq, const VirtQueueElement *elem,
                     unsigned int len, unsigned int idx);
 
+void virtqueue_map_sg(struct iovec *sg, target_phys_addr_t *addr,
+    size_t num_sg, int is_write);
 int virtqueue_pop(VirtQueue *vq, VirtQueueElement *elem);
 int virtqueue_avail_bytes(VirtQueue *vq, int in_bytes, int out_bytes);