239 	struct tcphdr *th, *oth;  in slhc_compress()  local
264 	if (isize < nlen + sizeof(*th))  in slhc_compress()
267 	th = (struct tcphdr *)(icp + nlen);  in slhc_compress()
268 	if (th->doff < sizeof(struct tcphdr) / 4)  in slhc_compress()
270 	hlen = nlen + th->doff * 4;  in slhc_compress()
276 	if(hlen > isize || th->syn || th->fin || th->rst ||  in slhc_compress()
277 	    ! (th->ack)){  in slhc_compress()
299 		 && th->source == cs->cs_tcp.source  in slhc_compress()
300 		 && th->dest == cs->cs_tcp.dest)  in slhc_compress()
357 	 || th->doff != cs->cs_tcp.doff  in slhc_compress()
359 	 || (th->doff > 5 && memcmp(th+1,cs->cs_tcpopt,((th->doff)-5)*4) != 0)){  in slhc_compress()
369 	if(th->urg){  in slhc_compress()
370 		deltaS = ntohs(th->urg_ptr);  in slhc_compress()
373 	} else if(th->urg_ptr != oth->urg_ptr){  in slhc_compress()
380 	if((deltaS = ntohs(th->window) - ntohs(oth->window)) != 0){  in slhc_compress()
384 	if((deltaA = ntohl(th->ack_seq) - ntohl(oth->ack_seq)) != 0L){  in slhc_compress()
390 	if((deltaS = ntohl(th->seq) - ntohl(oth->seq)) != 0L){  in slhc_compress()
436 	if(th->psh)  in slhc_compress()
441 	csum = th->check;  in slhc_compress()
443 	memcpy(&cs->cs_tcp,th,20);  in slhc_compress()
477 	memcpy(&cs->cs_tcp,th,20);  in slhc_compress()
480 	if (th->doff > 5)  in slhc_compress()
481 	  memcpy(cs->cs_tcpopt, th+1, ((th->doff) - 5) * 4);  in slhc_compress()