238 	struct iphdr *ip;  in slhc_compress()  local
250 	ip = (struct iphdr *) icp;  in slhc_compress()
251 	if (ip->version != 4 || ip->ihl < 5)  in slhc_compress()
255 	if (ip->protocol != IPPROTO_TCP || (ntohs(ip->frag_off) & 0x3fff)) {  in slhc_compress()
257 		if(ip->protocol != IPPROTO_TCP)  in slhc_compress()
263 	nlen = ip->ihl * 4;  in slhc_compress()
297 		if( ip->saddr == cs->cs_ip.saddr  in slhc_compress()
298 		 && ip->daddr == cs->cs_ip.daddr  in slhc_compress()
353 	if(ip->version != cs->cs_ip.version || ip->ihl != cs->cs_ip.ihl  in slhc_compress()
354 	 || ip->tos != cs->cs_ip.tos  in slhc_compress()
355 	 || (ip->frag_off & htons(0x4000)) != (cs->cs_ip.frag_off & htons(0x4000))  in slhc_compress()
356 	 || ip->ttl != cs->cs_ip.ttl  in slhc_compress()
358 	 || (ip->ihl > 5 && memcmp(ip+1,cs->cs_ipopt,((ip->ihl)-5)*4) != 0)  in slhc_compress()
405 		if(ip->tot_len != cs->cs_ip.tot_len &&  in slhc_compress()
431 	deltaS = ntohs(ip->id) - ntohs(cs->cs_ip.id);  in slhc_compress()
442 	memcpy(&cs->cs_ip,ip,20);  in slhc_compress()
476 	memcpy(&cs->cs_ip,ip,20);  in slhc_compress()
478 	if (ip->ihl > 5)  in slhc_compress()
479 	  memcpy(cs->cs_ipopt, ip+1, ((ip->ihl) - 5) * 4);  in slhc_compress()
498 	struct iphdr *ip;  in slhc_uncompress()  local
535 	ip = &cs->cs_ip;  in slhc_uncompress()
547 	hdrlen = ip->ihl * 4 + thp->doff * 4;  in slhc_uncompress()
553 		i = ntohs(ip->tot_len) - hdrlen;  in slhc_uncompress()
561 				  ntohs(ip->tot_len) - hdrlen);  in slhc_uncompress()
597 		ip->id = htons (ntohs (ip->id) + x);  in slhc_uncompress()
599 		ip->id = htons (ntohs (ip->id) + 1);  in slhc_uncompress()
611 	ip->tot_len = htons(len);  in slhc_uncompress()
612 	ip->check = 0;  in slhc_uncompress()
617 	memcpy(cp, ip, 20);  in slhc_uncompress()
620 	if (ip->ihl > 5) {  in slhc_uncompress()
621 	  memcpy(cp, cs->cs_ipopt, (ip->ihl - 5) * 4);  in slhc_uncompress()
622 	  cp += (ip->ihl - 5) * 4;  in slhc_uncompress()
625 	put_unaligned(ip_fast_csum(icp, ip->ihl),  in slhc_uncompress()