70 void do_icmp(ip_t *ip, char *args)  in do_icmp()  argument
75 	ip->ip_p = IPPROTO_ICMP;  in do_icmp()
76 	ip->ip_len += sizeof(*ic);  in do_icmp()
77 	ic = (struct icmp *)(ip + 1);  in do_icmp()
120 send_packets(char *dev, int mtu, ip_t *ip, struct in_addr gwip)  in send_packets()  argument
127 	return (send_packet(wfd, mtu, ip, gwip));  in send_packets()
131 udpcksum(ip_t *ip, struct udphdr *udp, int len)  in udpcksum()  argument
149 	ph.h.src = ip->ip_src.s_addr;  in udpcksum()
150 	ph.h.dst = ip->ip_dst.s_addr;  in udpcksum()
169 	ip_t	*ip;  in main()  local
178 	ip = (ip_t *)calloc(1, 65536);  in main()
179 	tcp = (tcphdr_t *)(ip + 1);  in main()
181 	ip->ip_len = sizeof(*ip);  in main()
182 	IP_HL_A(ip, sizeof(*ip) >> 2);  in main()
189 			if (ip->ip_p)  in main()
192 					ip->ip_p);  in main()
195 			do_icmp(ip, optarg);  in main()
217 			if (ip->ip_p)  in main()
220 					ip->ip_p);  in main()
224 				ip->ip_p = p->p_proto;  in main()
232 			if (ip->ip_p)  in main()
235 					ip->ip_p);  in main()
238 			ip->ip_p = IPPROTO_TCP;  in main()
239 			ip->ip_len += sizeof(tcphdr_t);  in main()
243 			if (ip->ip_p)  in main()
246 					ip->ip_p);  in main()
249 			ip->ip_p = IPPROTO_UDP;  in main()
250 			ip->ip_len += sizeof(udphdr_t);  in main()
257 			ip->ip_off = strtol(optarg, NULL, 0);  in main()
278 			olen = buildopts(optarg, options, (IP_HL(ip) - 5) << 2);  in main()
286 			if (ip->ip_p == IPPROTO_TCP || ip->ip_p == IPPROTO_UDP)  in main()
294 			if (ip->ip_p == IPPROTO_TCP)  in main()
315 	if (resolve(src, (char *)&ip->ip_src) == -1)  in main()
321 	if (resolve(dst, (char *)&ip->ip_dst) == -1)  in main()
328 		gwip = ip->ip_dst;  in main()
341 		hlen = sizeof(*ip) + olen;  in main()
342 		IP_HL_A(ip, hlen >> 2);  in main()
343 		ip->ip_len += olen;  in main()
351 		bcopy(ip, p, sizeof(*ip));  in main()
352 		bcopy(options, p + sizeof(*ip), olen);  in main()
353 		bcopy(ip + 1, p + hlen, ip->ip_len - hlen);  in main()
354 		ip = (ip_t *)p;  in main()
356 		if (ip->ip_p == IPPROTO_TCP) {  in main()
358 		} else if (ip->ip_p == IPPROTO_UDP) {  in main()
363 	if (ip->ip_p == IPPROTO_TCP)  in main()
399 	printf("Source:  %s\n", inet_ntoa(ip->ip_src));  in main()
400 	printf("Dest:    %s\n", inet_ntoa(ip->ip_dst));  in main()
402 	if (ip->ip_p == IPPROTO_TCP && __tcp_get_flags(tcp) != 0)  in main()
406 	if (ip->ip_p == IPPROTO_UDP) {  in main()
408 		udpcksum(ip, udp, ip->ip_len - (IP_HL(ip) << 2));  in main()
411 	if (ip->ip_p == IPPROTO_TCP && tcp->th_dport)  in main()
412 		return (do_socket(dev, mtu, ip, gwip));  in main()
414 	return (send_packets(dev, mtu, ip, gwip));  in main()