3819 struct sk_buff *skb_segment(struct sk_buff *head_skb,  in skb_segment()  argument
3824 	struct sk_buff *list_skb = skb_shinfo(head_skb)->frag_list;  in skb_segment()
3825 	unsigned int mss = skb_shinfo(head_skb)->gso_size;  in skb_segment()
3826 	unsigned int doffset = head_skb->data - skb_mac_header(head_skb);  in skb_segment()
3828 	unsigned int tnl_hlen = skb_tnl_header_len(head_skb);  in skb_segment()
3831 	unsigned int len = head_skb->len;  in skb_segment()
3840 	if ((skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY) &&  in skb_segment()
3841 	    mss != GSO_BY_FRAGS && mss != skb_headlen(head_skb)) {  in skb_segment()
3861 	__skb_push(head_skb, doffset);  in skb_segment()
3862 	proto = skb_network_protocol(head_skb, NULL);  in skb_segment()
3875 			    !net_gso_ok(features, skb_shinfo(head_skb)->gso_type))  in skb_segment()
3887 			skb_walk_frags(head_skb, iter) {  in skb_segment()
3913 	headroom = skb_headroom(head_skb);  in skb_segment()
3914 	pos = skb_headlen(head_skb);  in skb_segment()
3916 	if (skb_orphan_frags(head_skb, GFP_ATOMIC))  in skb_segment()
3919 	nfrags = skb_shinfo(head_skb)->nr_frags;  in skb_segment()
3920 	frag = skb_shinfo(head_skb)->frags;  in skb_segment()
3921 	frag_skb = head_skb;  in skb_segment()
3932 			len = head_skb->len - offset;  in skb_segment()
3937 		hsize = skb_headlen(head_skb) - offset;  in skb_segment()
3987 					   GFP_ATOMIC, skb_alloc_rx_flag(head_skb),  in skb_segment()
4003 		__copy_skb_header(nskb, head_skb);  in skb_segment()
4008 		skb_copy_from_linear_data_offset(head_skb, -tnl_hlen,  in skb_segment()
4020 					skb_copy_and_csum_bits(head_skb, offset,  in skb_segment()
4027 				if (skb_copy_bits(head_skb, offset, skb_put(nskb, len), len))  in skb_segment()
4035 		skb_copy_from_linear_data_offset(head_skb, offset,  in skb_segment()
4038 		skb_shinfo(nskb)->tx_flags |= skb_shinfo(head_skb)->tx_flags &  in skb_segment()
4119 	} while ((offset += len) < head_skb->len);  in skb_segment()
4129 		int type = skb_shinfo(head_skb)->gso_type;  in skb_segment()
4130 		unsigned short gso_size = skb_shinfo(head_skb)->gso_size;  in skb_segment()
4156 	if (head_skb->destructor == sock_wfree) {  in skb_segment()
4157 		swap(tail->truesize, head_skb->truesize);  in skb_segment()
4158 		swap(tail->destructor, head_skb->destructor);  in skb_segment()
4159 		swap(tail->sk, head_skb->sk);  in skb_segment()