1204 	struct iphdr *iph;  in inet_gso_segment()  local
1228 	if (unlikely(!pskb_may_pull(skb, sizeof(*iph))))  in inet_gso_segment()
1231 	iph = ip_hdr(skb);  in inet_gso_segment()
1232 	ihl = iph->ihl * 4;  in inet_gso_segment()
1233 	if (ihl < sizeof(*iph))  in inet_gso_segment()
1236 	id = ntohs(iph->id);  in inet_gso_segment()
1237 	proto = iph->protocol;  in inet_gso_segment()
1268 		iph = (struct iphdr *)(skb_mac_header(skb) + nhoff);  in inet_gso_segment()
1270 			iph->id = htons(id);  in inet_gso_segment()
1271 			iph->frag_off = htons(offset >> 3);  in inet_gso_segment()
1273 				iph->frag_off |= htons(IP_MF);  in inet_gso_segment()
1276 			iph->id = htons(id++);  in inet_gso_segment()
1278 		iph->tot_len = htons(skb->len - nhoff);  in inet_gso_segment()
1279 		ip_send_check(iph);  in inet_gso_segment()
1282 		skb->network_header = (u8 *)iph - skb->head;  in inet_gso_segment()
1295 	const struct iphdr *iph;  in inet_gro_receive()  local
1303 	hlen = off + sizeof(*iph);  in inet_gro_receive()
1304 	iph = skb_gro_header_fast(skb, off);  in inet_gro_receive()
1306 		iph = skb_gro_header_slow(skb, hlen, off);  in inet_gro_receive()
1307 		if (unlikely(!iph))  in inet_gro_receive()
1311 	proto = iph->protocol;  in inet_gro_receive()
1318 	if (*(u8 *)iph != 0x45)  in inet_gro_receive()
1321 	if (unlikely(ip_fast_csum((u8 *)iph, 5)))  in inet_gro_receive()
1324 	id = ntohl(*(__be32 *)&iph->id);  in inet_gro_receive()
1325 	flush = (u16)((ntohl(*(__be32 *)iph) ^ skb_gro_len(skb)) | (id & ~IP_DF));  in inet_gro_receive()
1340 		if ((iph->protocol ^ iph2->protocol) |  in inet_gro_receive()
1341 		    ((__force u32)iph->saddr ^ (__force u32)iph2->saddr) |  in inet_gro_receive()
1342 		    ((__force u32)iph->daddr ^ (__force u32)iph2->daddr)) {  in inet_gro_receive()
1349 			(iph->ttl ^ iph2->ttl) |  in inet_gro_receive()
1350 			(iph->tos ^ iph2->tos) |  in inet_gro_receive()
1351 			((iph->frag_off ^ iph2->frag_off) & htons(IP_DF));  in inet_gro_receive()
1372 	skb_gro_pull(skb, sizeof(*iph));  in inet_gro_receive()
1400 	struct iphdr *iph = (struct iphdr *)(skb->data + nhoff);  in inet_gro_complete()  local
1402 	int proto = iph->protocol;  in inet_gro_complete()
1408 	csum_replace2(&iph->check, iph->tot_len, newlen);  in inet_gro_complete()
1409 	iph->tot_len = newlen;  in inet_gro_complete()
1420 	err = ops->callbacks.gro_complete(skb, nhoff + sizeof(*iph));  in inet_gro_complete()