struct virtio_net_ctrl_hdr ctrl;
virtio_net_ctrl_ack status = ~0;
unsigned int tmp;
+ int i;
- if (!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {
- BUG(); /* Caller should know better */
- return false;
- }
-
- BUG_ON(out + in > VIRTNET_SEND_COMMAND_SG_MAX);
+ /* Caller should know better */
+ BUG_ON(!virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ||
+ (out + in > VIRTNET_SEND_COMMAND_SG_MAX));
out++; /* Add header */
in++; /* Add return status */
sg_init_table(sg, out + in);
sg_set_buf(&sg[0], &ctrl, sizeof(ctrl));
- memcpy(&sg[1], data, sizeof(struct scatterlist) * (out + in - 2));
+ for_each_sg(data, s, out + in - 2, i)
+ sg_set_buf(&sg[i + 1], sg_virt(s), s->length);
sg_set_buf(&sg[out + in - 1], &status, sizeof(status));
- if (vi->cvq->vq_ops->add_buf(vi->cvq, sg, out, in, vi) != 0)
- BUG();
+ BUG_ON(vi->cvq->vq_ops->add_buf(vi->cvq, sg, out, in, vi));
vi->cvq->vq_ops->kick(vi->cvq);