1705 	struct virtio_net_hdr gso = { 0 };  in tun_get_user()  local
1734 		if (!copy_from_iter_full(&gso, sizeof(gso), from))  in tun_get_user()
1737 		if ((gso.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) &&  in tun_get_user()
1738 …tun16_to_cpu(tun, gso.csum_start) + tun16_to_cpu(tun, gso.csum_offset) + 2 > tun16_to_cpu(tun, gso…  in tun_get_user()
1739 …gso.hdr_len = cpu_to_tun16(tun, tun16_to_cpu(tun, gso.csum_start) + tun16_to_cpu(tun, gso.csum_off…  in tun_get_user()
1741 		if (tun16_to_cpu(tun, gso.hdr_len) > len)  in tun_get_user()
1743 		iov_iter_advance(from, vnet_hdr_sz - sizeof(gso));  in tun_get_user()
1749 			     (gso.hdr_len && tun16_to_cpu(tun, gso.hdr_len) < ETH_HLEN)))  in tun_get_user()
1762 		copylen = gso.hdr_len ? tun16_to_cpu(tun, gso.hdr_len) : GOODCOPY_LEN;  in tun_get_user()
1776 		skb = tun_build_skb(tun, tfile, from, &gso, len, &skb_xdp);  in tun_get_user()
1786 			if (tun16_to_cpu(tun, gso.hdr_len) > good_linear)  in tun_get_user()
1789 				linear = tun16_to_cpu(tun, gso.hdr_len);  in tun_get_user()
1830 	if (virtio_net_hdr_to_skb(skb, &gso, tun_is_little_endian(tun))) {  in tun_get_user()
1986 		struct virtio_net_hdr gso = { 0 };  in tun_put_user_xdp()  local
1991 		if (unlikely(copy_to_iter(&gso, sizeof(gso), iter) !=  in tun_put_user_xdp()
1992 			     sizeof(gso)))  in tun_put_user_xdp()
1994 		iov_iter_advance(iter, vnet_hdr_sz - sizeof(gso));  in tun_put_user_xdp()
2045 		struct virtio_net_hdr gso;  in tun_put_user()  local
2050 		if (virtio_net_hdr_from_skb(skb, &gso,  in tun_put_user()
2056 			       sinfo->gso_type, tun16_to_cpu(tun, gso.gso_size),  in tun_put_user()
2057 			       tun16_to_cpu(tun, gso.hdr_len));  in tun_put_user()
2061 				       min((int)tun16_to_cpu(tun, gso.hdr_len), 64), true);  in tun_put_user()
2066 		if (copy_to_iter(&gso, sizeof(gso), iter) != sizeof(gso))  in tun_put_user()
2069 		iov_iter_advance(iter, vnet_hdr_sz - sizeof(gso));  in tun_put_user()