4115 struct sk_buff *skb_segment(struct sk_buff *head_skb,  in skb_segment()  argument
4120 	struct sk_buff *list_skb = skb_shinfo(head_skb)->frag_list;  in skb_segment()
4121 	skb_frag_t *frag = skb_shinfo(head_skb)->frags;  in skb_segment()
4122 	unsigned int mss = skb_shinfo(head_skb)->gso_size;  in skb_segment()
4123 	unsigned int doffset = head_skb->data - skb_mac_header(head_skb);  in skb_segment()
4124 	struct sk_buff *frag_skb = head_skb;  in skb_segment()
4126 	unsigned int tnl_hlen = skb_tnl_header_len(head_skb);  in skb_segment()
4129 	unsigned int len = head_skb->len;  in skb_segment()
4132 	int nfrags = skb_shinfo(head_skb)->nr_frags;  in skb_segment()
4137 	if ((skb_shinfo(head_skb)->gso_type & SKB_GSO_DODGY) &&  in skb_segment()
4138 	    mss != GSO_BY_FRAGS && mss != skb_headlen(head_skb)) {  in skb_segment()
4158 	__skb_push(head_skb, doffset);  in skb_segment()
4159 	proto = skb_network_protocol(head_skb, NULL);  in skb_segment()
4172 			    !net_gso_ok(features, skb_shinfo(head_skb)->gso_type))  in skb_segment()
4184 			skb_walk_frags(head_skb, iter) {  in skb_segment()
4209 	headroom = skb_headroom(head_skb);  in skb_segment()
4210 	pos = skb_headlen(head_skb);  in skb_segment()
4221 			len = head_skb->len - offset;  in skb_segment()
4226 		hsize = skb_headlen(head_skb) - offset;  in skb_segment()
4277 					   GFP_ATOMIC, skb_alloc_rx_flag(head_skb),  in skb_segment()
4293 		__copy_skb_header(nskb, head_skb);  in skb_segment()
4298 		skb_copy_from_linear_data_offset(head_skb, -tnl_hlen,  in skb_segment()
4310 					skb_copy_and_csum_bits(head_skb, offset,  in skb_segment()
4317 				if (skb_copy_bits(head_skb, offset, skb_put(nskb, len), len))  in skb_segment()
4325 		skb_copy_from_linear_data_offset(head_skb, offset,  in skb_segment()
4328 		skb_shinfo(nskb)->flags |= skb_shinfo(head_skb)->flags &  in skb_segment()
4409 	} while ((offset += len) < head_skb->len);  in skb_segment()
4419 		int type = skb_shinfo(head_skb)->gso_type;  in skb_segment()
4420 		unsigned short gso_size = skb_shinfo(head_skb)->gso_size;  in skb_segment()
4446 	if (head_skb->destructor == sock_wfree) {  in skb_segment()
4447 		swap(tail->truesize, head_skb->truesize);  in skb_segment()
4448 		swap(tail->destructor, head_skb->destructor);  in skb_segment()
4449 		swap(tail->sk, head_skb->sk);  in skb_segment()