255 static inline bool ip_is_fragment(const struct iphdr *iph)  in ip_is_fragment()  argument
257 	return (iph->frag_off & htons(IP_MF | IP_OFFSET)) != 0;  in ip_is_fragment()
266 int ip_decrease_ttl(struct iphdr *iph)  in ip_decrease_ttl()  argument
268 	u32 check = (__force u32)iph->check;  in ip_decrease_ttl()
270 	iph->check = (__force __sum16)(check + (check>=0xFFFF));  in ip_decrease_ttl()
271 	return --iph->ttl;  in ip_decrease_ttl()
323 void __ip_select_ident(struct net *net, struct iphdr *iph, int segs);
328 	struct iphdr *iph = ip_hdr(skb);  in ip_select_ident_segs()  local
330 	if ((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) {  in ip_select_ident_segs()
337 			iph->id = htons(inet_sk(sk)->inet_id);  in ip_select_ident_segs()
340 			iph->id = 0;  in ip_select_ident_segs()
343 		__ip_select_ident(net, iph, segs);  in ip_select_ident_segs()
374 	const struct iphdr *iph = skb_gro_network_header(skb);  in inet_gro_compute_pseudo()  local
376 	return csum_tcpudp_nofold(iph->saddr, iph->daddr,  in inet_gro_compute_pseudo()