99 static void do_icmp(ip, args)  in do_icmp()  argument
100 	ip_t *ip;  in do_icmp()
106 	ip->ip_p = IPPROTO_ICMP;
107 	ip->ip_len += sizeof(*ic);
108 	ic = (struct icmp *)(ip + 1);
150 int send_packets(dev, mtu, ip, gwip)  in send_packets()  argument
153 	ip_t *ip;
161 	return send_packet(wfd, mtu, ip, gwip);
165 udpcksum(ip_t *ip, struct udphdr *udp, int len)  in udpcksum()  argument
183 	ph.h.src = ip->ip_src.s_addr;  in udpcksum()
184 	ph.h.dst = ip->ip_dst.s_addr;  in udpcksum()
204 	ip_t	*ip;  local
213 	ip = (ip_t *)calloc(1, 65536);
214 	tcp = (tcphdr_t *)(ip + 1);
216 	ip->ip_len = sizeof(*ip);
217 	IP_HL_A(ip, sizeof(*ip) >> 2);
224 			if (ip->ip_p)
227 					ip->ip_p);
230 			do_icmp(ip, optarg);
252 			if (ip->ip_p)
255 					ip->ip_p);
259 				ip->ip_p = p->p_proto;
267 			if (ip->ip_p)
270 					ip->ip_p);
273 			ip->ip_p = IPPROTO_TCP;
274 			ip->ip_len += sizeof(tcphdr_t);
278 			if (ip->ip_p)
281 					ip->ip_p);
284 			ip->ip_p = IPPROTO_UDP;
285 			ip->ip_len += sizeof(udphdr_t);
292 			ip->ip_off = strtol(optarg, NULL, 0);
313 			olen = buildopts(optarg, options, (IP_HL(ip) - 5) << 2);
321 			if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)
329 			if (ip->ip_p == IPPROTO_TCP)
350 	if (resolve(src, (char *)&ip->ip_src) == -1)
356 	if (resolve(dst, (char *)&ip->ip_dst) == -1)
363 		gwip = ip->ip_dst;
376 		hlen = sizeof(*ip) + olen;
377 		IP_HL_A(ip, hlen >> 2);
378 		ip->ip_len += olen;
386 		bcopy(ip, p, sizeof(*ip));
387 		bcopy(options, p + sizeof(*ip), olen);
388 		bcopy(ip + 1, p + hlen, ip->ip_len - hlen);
389 		ip = (ip_t *)p;
391 		if (ip->ip_p == IPPROTO_TCP) {
393 		} else if (ip->ip_p == IPPROTO_UDP) {
398 	if (ip->ip_p == IPPROTO_TCP)
425 	printf("Source:  %s\n", inet_ntoa(ip->ip_src));
426 	printf("Dest:    %s\n", inet_ntoa(ip->ip_dst));
428 	if (ip->ip_p == IPPROTO_TCP && tcp->th_flags)
432 	if (ip->ip_p == IPPROTO_UDP) {
434 		udpcksum(ip, udp, ip->ip_len - (IP_HL(ip) << 2));
437 	if (ip->ip_p == IPPROTO_TCP && tcp->th_dport)
438 		return do_socket(dev, mtu, ip, gwip);
440 	return send_packets(dev, mtu, ip, gwip);