576 				     struct virtio_net_hdr *vnet_hdr)  in macvtap_skb_from_vnet_hdr()  argument
579 	if (vnet_hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {  in macvtap_skb_from_vnet_hdr()
580 		switch (vnet_hdr->gso_type & ~VIRTIO_NET_HDR_GSO_ECN) {  in macvtap_skb_from_vnet_hdr()
594 		if (vnet_hdr->gso_type & VIRTIO_NET_HDR_GSO_ECN)  in macvtap_skb_from_vnet_hdr()
597 		if (vnet_hdr->gso_size == 0)  in macvtap_skb_from_vnet_hdr()
601 	if (vnet_hdr->flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) {  in macvtap_skb_from_vnet_hdr()
602 		if (!skb_partial_csum_set(skb, macvtap16_to_cpu(q, vnet_hdr->csum_start),  in macvtap_skb_from_vnet_hdr()
603 					  macvtap16_to_cpu(q, vnet_hdr->csum_offset)))  in macvtap_skb_from_vnet_hdr()
607 	if (vnet_hdr->gso_type != VIRTIO_NET_HDR_GSO_NONE) {  in macvtap_skb_from_vnet_hdr()
608 		skb_shinfo(skb)->gso_size = macvtap16_to_cpu(q, vnet_hdr->gso_size);  in macvtap_skb_from_vnet_hdr()
620 				    struct virtio_net_hdr *vnet_hdr)  in macvtap_skb_to_vnet_hdr()  argument
622 	memset(vnet_hdr, 0, sizeof(*vnet_hdr));  in macvtap_skb_to_vnet_hdr()
628 		vnet_hdr->hdr_len = cpu_to_macvtap16(q, skb_headlen(skb));  in macvtap_skb_to_vnet_hdr()
629 		vnet_hdr->gso_size = cpu_to_macvtap16(q, sinfo->gso_size);  in macvtap_skb_to_vnet_hdr()
631 			vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV4;  in macvtap_skb_to_vnet_hdr()
633 			vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_TCPV6;  in macvtap_skb_to_vnet_hdr()
635 			vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_UDP;  in macvtap_skb_to_vnet_hdr()
639 			vnet_hdr->gso_type |= VIRTIO_NET_HDR_GSO_ECN;  in macvtap_skb_to_vnet_hdr()
641 		vnet_hdr->gso_type = VIRTIO_NET_HDR_GSO_NONE;  in macvtap_skb_to_vnet_hdr()
644 		vnet_hdr->flags = VIRTIO_NET_HDR_F_NEEDS_CSUM;  in macvtap_skb_to_vnet_hdr()
646 			vnet_hdr->csum_start = cpu_to_macvtap16(q,  in macvtap_skb_to_vnet_hdr()
649 			vnet_hdr->csum_start = cpu_to_macvtap16(q,  in macvtap_skb_to_vnet_hdr()
651 		vnet_hdr->csum_offset = cpu_to_macvtap16(q, skb->csum_offset);  in macvtap_skb_to_vnet_hdr()
653 		vnet_hdr->flags = VIRTIO_NET_HDR_F_DATA_VALID;  in macvtap_skb_to_vnet_hdr()
670 	struct virtio_net_hdr vnet_hdr = { 0 };  in macvtap_get_user()  local
686 		n = copy_from_iter(&vnet_hdr, sizeof(vnet_hdr), from);  in macvtap_get_user()
687 		if (n != sizeof(vnet_hdr))  in macvtap_get_user()
689 		iov_iter_advance(from, vnet_hdr_len - sizeof(vnet_hdr));  in macvtap_get_user()
690 		if ((vnet_hdr.flags & VIRTIO_NET_HDR_F_NEEDS_CSUM) &&  in macvtap_get_user()
691 		     macvtap16_to_cpu(q, vnet_hdr.csum_start) +  in macvtap_get_user()
692 		     macvtap16_to_cpu(q, vnet_hdr.csum_offset) + 2 >  in macvtap_get_user()
693 			     macvtap16_to_cpu(q, vnet_hdr.hdr_len))  in macvtap_get_user()
694 			vnet_hdr.hdr_len = cpu_to_macvtap16(q,  in macvtap_get_user()
695 				 macvtap16_to_cpu(q, vnet_hdr.csum_start) +  in macvtap_get_user()
696 				 macvtap16_to_cpu(q, vnet_hdr.csum_offset) + 2);  in macvtap_get_user()
698 		if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > len)  in macvtap_get_user()
709 		copylen = vnet_hdr.hdr_len ?  in macvtap_get_user()
710 			macvtap16_to_cpu(q, vnet_hdr.hdr_len) : GOODCOPY_LEN;  in macvtap_get_user()
722 		if (macvtap16_to_cpu(q, vnet_hdr.hdr_len) > good_linear)  in macvtap_get_user()
725 			linear = macvtap16_to_cpu(q, vnet_hdr.hdr_len);  in macvtap_get_user()
751 		err = macvtap_skb_from_vnet_hdr(q, skb, &vnet_hdr);  in macvtap_get_user()
808 		struct virtio_net_hdr vnet_hdr;  in macvtap_put_user()  local
813 		macvtap_skb_to_vnet_hdr(q, skb, &vnet_hdr);  in macvtap_put_user()
815 		if (copy_to_iter(&vnet_hdr, sizeof(vnet_hdr), iter) !=  in macvtap_put_user()
816 		    sizeof(vnet_hdr))  in macvtap_put_user()
819 		iov_iter_advance(iter, vnet_hdr_len - sizeof(vnet_hdr));  in macvtap_put_user()