161 	struct icmp *icp;  in icmp_do_error()  local
241 	icp = mtod(m, struct icmp *);  in icmp_do_error()
245 	icp->icmp_type = type;  in icmp_do_error()
247 		icp->icmp_gwaddr.s_addr = dest;  in icmp_do_error()
249 		icp->icmp_void = 0;  in icmp_do_error()
255 			icp->icmp_pptr = code;  in icmp_do_error()
259 			icp->icmp_nextmtu = htons(destmtu);  in icmp_do_error()
262 	icp->icmp_code = code;  in icmp_do_error()
263 	m_copydata(n, 0, icmplen, &icp->icmp_ip);  in icmp_do_error()
333 	struct icmp *icp;  in icmp_input_if()  local
371 	icp = (struct icmp *)(mtod(m, caddr_t) + hlen);  in icmp_input_if()
377 		printf("icmp_input, type %d code %d\n", icp->icmp_type,  in icmp_input_if()
378 		    icp->icmp_code);  in icmp_input_if()
380 	if (icp->icmp_type > ICMP_MAXTYPE)  in icmp_input_if()
384 		switch (icp->icmp_type) {  in icmp_input_if()
410 	icmpstat_inc(icps_inhist + icp->icmp_type);  in icmp_input_if()
411 	code = icp->icmp_code;  in icmp_input_if()
412 	switch (icp->icmp_type) {  in icmp_input_if()
469 		if (icmplen < ICMP_ADVLENMIN || icmplen < ICMP_ADVLEN(icp) ||  in icmp_input_if()
470 		    icp->icmp_ip.ip_hl < (sizeof(struct ip) >> 2)) {  in icmp_input_if()
474 		if (IN_MULTICAST(icp->icmp_ip.ip_dst.s_addr))  in icmp_input_if()
478 		if (icp->icmp_ip.ip_p == IPPROTO_IPV6) {  in icmp_input_if()
480 			    icmplen < ICMP_V6ADVLEN(icp)) {  in icmp_input_if()
488 			printf("deliver to protocol %d\n", icp->icmp_ip.ip_p);  in icmp_input_if()
493 		sin.sin_addr = icp->icmp_ip.ip_dst;  in icmp_input_if()
503 		ctlfunc = inetsw[ip_protox[icp->icmp_ip.ip_p]].pr_ctlinput;  in icmp_input_if()
506 			    &icp->icmp_ip);  in icmp_input_if()
519 		icp->icmp_type = ICMP_ECHOREPLY;  in icmp_input_if()
535 		icp->icmp_type = ICMP_TSTAMPREPLY;  in icmp_input_if()
536 		icp->icmp_rtime = iptime();  in icmp_input_if()
537 		icp->icmp_ttime = icp->icmp_rtime;	/* bogus, do later! */  in icmp_input_if()
564 		icp->icmp_type = ICMP_MASKREPLY;  in icmp_input_if()
565 		icp->icmp_mask = ia->ia_sockmask.sin_addr.s_addr;  in icmp_input_if()
583 		icmpstat_inc(icps_outhist + icp->icmp_type);  in icmp_input_if()
602 		if (icmplen < ICMP_ADVLENMIN || icmplen < ICMP_ADVLEN(icp) ||  in icmp_input_if()
603 		    icp->icmp_ip.ip_hl < (sizeof(struct ip) >> 2)) {  in icmp_input_if()
619 		memcpy(&sdst.sin_addr, &icp->icmp_ip.ip_dst,  in icmp_input_if()
621 		memcpy(&sgw.sin_addr, &icp->icmp_gwaddr,  in icmp_input_if()
630 			inet_ntop(AF_INET, &icp->icmp_gwaddr, gw, sizeof(gw));  in icmp_input_if()
631 			inet_ntop(AF_INET, &icp->icmp_ip.ip_dst,  in icmp_input_if()
837 	struct icmp *icp;  in icmp_send()  local
840 	icp = (struct icmp *)(mtod(m, caddr_t) + hlen);  in icmp_send()
841 	icp->icmp_cksum = 0;  in icmp_send()
1007 icmp_mtudisc(struct icmp *icp, u_int rtableid)  in icmp_mtudisc()  argument
1012 	u_long mtu = ntohs(icp->icmp_nextmtu);  /* Why a long?  IPv6 */  in icmp_mtudisc()
1014 	rt = icmp_mtudisc_clone(icp->icmp_ip.ip_dst, rtableid, 0);  in icmp_mtudisc()
1028 		mtu = ntohs(icp->icmp_ip.ip_len);  in icmp_mtudisc()
1031 			mtu -= (icp->icmp_ip.ip_hl << 2);  in icmp_mtudisc()
1126 	struct icmp *icp;  in icmp_do_exthdr()  local
1134 	icp = (struct icmp *)(mtod(m, caddr_t) + hlen);  in icmp_do_exthdr()
1135 	if (icp->icmp_type != ICMP_TIMXCEED && icp->icmp_type != ICMP_UNREACH &&  in icmp_do_exthdr()
1136 	    icp->icmp_type != ICMP_PARAMPROB)  in icmp_do_exthdr()
1140 	if (icp->icmp_length != 0)  in icmp_do_exthdr()
1150 	icp->icmp_length = off / sizeof(u_int32_t);  in icmp_do_exthdr()