496 	unsigned int mtu, hlen, left, len, ll_rs;  in ip_fragment()  local
510 	mtu = ip_skb_dst_mtu(skb);  in ip_fragment()
513 		      IPCB(skb)->frag_max_size > mtu))) {  in ip_fragment()
516 			  htonl(mtu));  in ip_fragment()
526 	mtu = mtu - hlen;	/* Size of data space */  in ip_fragment()
529 		mtu -= nf_bridge_mtu_reduction(skb);  in ip_fragment()
544 		if (first_len - hlen > mtu ||  in ip_fragment()
552 			if (frag->len > mtu ||  in ip_fragment()
663 		if (len > mtu)  in ip_fragment()
664 			len = mtu;  in ip_fragment()
854 	int mtu;  in __ip_append_data()  local
866 	mtu = cork->fragsize;  in __ip_append_data()
874 	maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;  in __ip_append_data()
875 	maxnonfragsize = ip_sk_ignore_df(sk) ? 0xFFFF : mtu;  in __ip_append_data()
879 			       mtu - (opt ? opt->optlen : 0));  in __ip_append_data()
888 	    length + fragheaderlen <= mtu &&  in __ip_append_data()
894 	if (((length > mtu) || (skb && skb_is_gso(skb))) &&  in __ip_append_data()
918 		copy = mtu - skb->len;  in __ip_append_data()
940 			if (datalen > mtu - fragheaderlen)  in __ip_append_data()
946 				alloclen = mtu;  in __ip_append_data()
1116 			 dst_mtu(&rt->dst) : rt->dst.dev->mtu;  in ip_setup_cork()
1173 	int mtu;  in ip_append_page()  local
1196 	mtu = cork->fragsize;  in ip_append_page()
1199 	maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen;  in ip_append_page()
1200 	maxnonfragsize = ip_sk_ignore_df(sk) ? 0xFFFF : mtu;  in ip_append_page()
1204 			       mtu - (opt ? opt->optlen : 0));  in ip_append_page()
1213 	if ((size + skb->len > mtu) &&  in ip_append_page()
1216 		skb_shinfo(skb)->gso_size = mtu - fragheaderlen;  in ip_append_page()
1228 			len = mtu - skb->len;  in ip_append_page()