This new helper returns the total number of bytes covered by
a vringh_kiov.
Suggested-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20210315163450.254396-7-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
kiov->iov = NULL;
}
+static inline size_t vringh_kiov_length(struct vringh_kiov *kiov)
+{
+ size_t len = 0;
+ int i;
+
+ for (i = kiov->i; i < kiov->used; i++)
+ len += kiov->iov[i].iov_len;
+
+ return len;
+}
+
void vringh_kiov_advance(struct vringh_kiov *kiov, size_t len);
int vringh_getdesc_kern(struct vringh *vrh,