238 	struct iphdr *ip;  in slhc_compress()  local
250 	ip = (struct iphdr *) icp;  in slhc_compress()
253 	if (ip->protocol != IPPROTO_TCP || (ntohs(ip->frag_off) & 0x3fff)) {  in slhc_compress()
255 		if(ip->protocol != IPPROTO_TCP)  in slhc_compress()
263 	th = (struct tcphdr *)(((unsigned char *)ip) + ip->ihl*4);  in slhc_compress()
264 	hlen = ip->ihl*4 + th->doff*4;  in slhc_compress()
291 		if( ip->saddr == cs->cs_ip.saddr  in slhc_compress()
292 		 && ip->daddr == cs->cs_ip.daddr  in slhc_compress()
347 	if(ip->version != cs->cs_ip.version || ip->ihl != cs->cs_ip.ihl  in slhc_compress()
348 	 || ip->tos != cs->cs_ip.tos  in slhc_compress()
349 	 || (ip->frag_off & htons(0x4000)) != (cs->cs_ip.frag_off & htons(0x4000))  in slhc_compress()
350 	 || ip->ttl != cs->cs_ip.ttl  in slhc_compress()
352 	 || (ip->ihl > 5 && memcmp(ip+1,cs->cs_ipopt,((ip->ihl)-5)*4) != 0)  in slhc_compress()
399 		if(ip->tot_len != cs->cs_ip.tot_len &&  in slhc_compress()
425 	deltaS = ntohs(ip->id) - ntohs(cs->cs_ip.id);  in slhc_compress()
436 	memcpy(&cs->cs_ip,ip,20);  in slhc_compress()
470 	memcpy(&cs->cs_ip,ip,20);  in slhc_compress()
472 	if (ip->ihl > 5)  in slhc_compress()
473 	  memcpy(cs->cs_ipopt, ip+1, ((ip->ihl) - 5) * 4);  in slhc_compress()
492 	register struct iphdr *ip;  in slhc_uncompress()  local
525 	ip = &cs->cs_ip;  in slhc_uncompress()
537 	hdrlen = ip->ihl * 4 + thp->doff * 4;  in slhc_uncompress()
543 		i = ntohs(ip->tot_len) - hdrlen;  in slhc_uncompress()
551 				  ntohs(ip->tot_len) - hdrlen);  in slhc_uncompress()
587 		ip->id = htons (ntohs (ip->id) + x);  in slhc_uncompress()
589 		ip->id = htons (ntohs (ip->id) + 1);  in slhc_uncompress()
601 	ip->tot_len = htons(len);  in slhc_uncompress()
602 	ip->check = 0;  in slhc_uncompress()
607 	memcpy(cp, ip, 20);  in slhc_uncompress()
610 	if (ip->ihl > 5) {  in slhc_uncompress()
611 	  memcpy(cp, cs->cs_ipopt, (ip->ihl - 5) * 4);  in slhc_uncompress()
612 	  cp += (ip->ihl - 5) * 4;  in slhc_uncompress()
615 	put_unaligned(ip_fast_csum(icp, ip->ihl),  in slhc_uncompress()