VIOIF_HEADER_SKIP
VERIFY3U(msg_size, <=, virtio_dma_size(tb->tb_dma) - VIOIF_HEADER_SKIP);
mcopymsg(mp, virtio_dma_va(tb->tb_dma, VIOIF_HEADER_SKIP));
virtio_dma_cookie_pa(tb->tb_dma, 0) + VIOIF_HEADER_SKIP,
bzero(vnh, VIOIF_HEADER_SKIP);
VIOIF_HEADER_SKIP + 1);
VIOIF_HEADER_SKIP) % 4, ==, 2);
pa += VIOIF_HEADER_SKIP;
VERIFY3U(sz, >, VIOIF_HEADER_SKIP);
sz -= VIOIF_HEADER_SKIP;
bcopy(virtio_dma_va(rb->rb_dma, VIOIF_HEADER_SKIP),
VIOIF_HEADER_SKIP), len, 0,
VIOIF_HEADER_SKIP)