On (Tue) Mar 23 2010 [20:00:19], Amit Shah wrote: > @@ -369,16 +370,23 @@ static void handle_output(VirtIODevice *vdev, VirtQueue > *vq) > * with it. Just ignore the data in that case. > */ > if (!port->info->have_data) { > - ret = 0; > goto next_buf; > } > > - /* The guest always sends only one sg */ > - ret = port->info->have_data(port, elem.out_sg[0].iov_base, > - elem.out_sg[0].iov_len); > + for (i = 0; i < elem.out_num; i++) { > + size_t ret; > + > + ret = port->info->have_data(port, elem.out_sg[0].iov_base, > + elem.out_sg[0].iov_len); > + if (ret < elem.out_sg[0].iov_len) { > + /* We couldn't write the entire iov; stop processing now */ > + break;
We should increment len here if ret > 0. I'll post a followup patch that does this. > + } > + len += ret; > + } > > next_buf: > - virtqueue_push(vq, &elem, ret); > + virtqueue_push(vq, &elem, len); > } > virtio_notify(vdev, vq); > } > -- > 1.6.2.5 > Amit