network/ping/ping.c

39  * measure round-trip-delays and packet loss across network paths.
191 static int waittime = MAXWAIT;	/* timeout for each packet */
221 	u_char *datap, packet[IP_MAXPACKET] __aligned(4);
337 		case 'G': /* Maximum packet size for ping sweep */
340 				errx(EX_USAGE, "invalid packet size: `%s'",
346 				    "packet size too large: %d > %u",
351 		case 'g': /* Minimum packet size for ping sweep */
354 				errx(EX_USAGE, "invalid packet size: `%s'",
360 				    "packet size too large: %d > %u",
371 				errx(EX_USAGE, "invalid packet size: `%s'",
377 				    "packet size too large: %d > %u",
476 		case 's':		/* size of packet to send */
479 				errx(EX_USAGE, "invalid packet size: `%s'",
485 				    "packet size too large: %d > %u",
567 		errx(EX_USAGE, "packet size too large: %d > %d", datalen,
806 	    "Maximum packet size must be no less than the minimum packet size");
905 	iov.iov_base = packet;
981 			pr_pack((char *)packet, cc, &from, tv);
1034  *	Compose and transmit an ICMP ECHO REQUEST packet.  The IP packet
1047 	u_char *packet;
1049 	packet = outpack;
1064 		 * packet. We're only concerned with
1084 	/* Update icmp_cksum in the raw packet data buffer. */
1093 		/* Update ip_len in the raw packet data buffer. */
1097 		/* Update ip_sum in the raw packet data buffer. */
1100 		packet = outpackhdr;
1102 	i = send(ssend, (char *)packet, cc, 0);
1123  *	Print out the packet, if it came from us.  This logic is necessary
1149 	 * Get size of IP header of the received packet.
1169 	/* Check packet has enough data to carry a valid ICMP header */
1173 			warn("packet too short (%zd bytes) from %s", cc,
1344 				warnx("inner packet too short (%zd bytes) from %s",