327 	struct iphdr *iph;  in netpoll_send_udp()  local
331 	ip_len = eth_len = udp_len + sizeof(*iph);  in netpoll_send_udp()
355 	skb_push(skb, sizeof(*iph));  in netpoll_send_udp()
357 	iph = ip_hdr(skb);  in netpoll_send_udp()
360 	put_unaligned(0x45, (unsigned char *)iph);  in netpoll_send_udp()
361 	iph->tos      = 0;  in netpoll_send_udp()
362 	put_unaligned(htons(ip_len), &(iph->tot_len));  in netpoll_send_udp()
363 	iph->id       = 0;  in netpoll_send_udp()
364 	iph->frag_off = 0;  in netpoll_send_udp()
365 	iph->ttl      = 64;  in netpoll_send_udp()
366 	iph->protocol = IPPROTO_UDP;  in netpoll_send_udp()
367 	iph->check    = 0;  in netpoll_send_udp()
368 	put_unaligned(htonl(np->local_ip), &(iph->saddr));  in netpoll_send_udp()
369 	put_unaligned(htonl(np->remote_ip), &(iph->daddr));  in netpoll_send_udp()
370 	iph->check    = ip_fast_csum((unsigned char *)iph, iph->ihl);  in netpoll_send_udp()
479 	struct iphdr *iph;  in __netpoll_rx()  local
504 	iph = (struct iphdr *)skb->data;  in __netpoll_rx()
507 	if (iph->ihl < 5 || iph->version != 4)  in __netpoll_rx()
509 	if (!pskb_may_pull(skb, iph->ihl*4))  in __netpoll_rx()
511 	if (ip_fast_csum((u8 *)iph, iph->ihl) != 0)  in __netpoll_rx()
514 	len = ntohs(iph->tot_len);  in __netpoll_rx()
515 	if (skb->len < len || len < iph->ihl*4)  in __netpoll_rx()
525 	if (iph->protocol != IPPROTO_UDP)  in __netpoll_rx()
528 	len -= iph->ihl*4;  in __netpoll_rx()
529 	uh = (struct udphdr *)(((char *)iph) + iph->ihl*4);  in __netpoll_rx()
534 	if (checksum_udp(skb, uh, ulen, iph->saddr, iph->daddr))  in __netpoll_rx()
536 	if (np->local_ip && np->local_ip != ntohl(iph->daddr))  in __netpoll_rx()
538 	if (np->remote_ip && np->remote_ip != ntohl(iph->saddr))  in __netpoll_rx()