xref: /freebsd/usr.bin/netstat/inet.c (revision 98e0ffaefb0f241cda3a72395d3be04192ae0d47)
1 /*-
2  * Copyright (c) 1983, 1988, 1993, 1995
3  *	The Regents of the University of California.  All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 4. Neither the name of the University nor the names of its contributors
14  *    may be used to endorse or promote products derived from this software
15  *    without specific prior written permission.
16  *
17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27  * SUCH DAMAGE.
28  */
29 
30 #if 0
31 #ifndef lint
32 static char sccsid[] = "@(#)inet.c	8.5 (Berkeley) 5/24/95";
33 #endif /* not lint */
34 #endif
35 
36 #include <sys/cdefs.h>
37 __FBSDID("$FreeBSD$");
38 
39 #include <sys/param.h>
40 #include <sys/queue.h>
41 #include <sys/domain.h>
42 #include <sys/protosw.h>
43 #include <sys/socket.h>
44 #include <sys/socketvar.h>
45 #include <sys/sysctl.h>
46 
47 #include <net/route.h>
48 #include <net/if_arp.h>
49 #include <netinet/in.h>
50 #include <netinet/in_systm.h>
51 #include <netinet/ip.h>
52 #include <netinet/ip_carp.h>
53 #ifdef INET6
54 #include <netinet/ip6.h>
55 #endif /* INET6 */
56 #include <netinet/in_pcb.h>
57 #include <netinet/ip_icmp.h>
58 #include <netinet/icmp_var.h>
59 #include <netinet/igmp_var.h>
60 #include <netinet/ip_var.h>
61 #include <netinet/pim_var.h>
62 #include <netinet/tcp.h>
63 #include <netinet/tcpip.h>
64 #include <netinet/tcp_seq.h>
65 #define	TCPSTATES
66 #include <netinet/tcp_fsm.h>
67 #include <netinet/tcp_timer.h>
68 #include <netinet/tcp_var.h>
69 #include <netinet/tcp_debug.h>
70 #include <netinet/udp.h>
71 #include <netinet/udp_var.h>
72 
73 #include <arpa/inet.h>
74 #include <err.h>
75 #include <errno.h>
76 #include <libutil.h>
77 #include <netdb.h>
78 #include <stdint.h>
79 #include <stdio.h>
80 #include <stdlib.h>
81 #include <stdbool.h>
82 #include <string.h>
83 #include <unistd.h>
84 #include <libxo/xo.h>
85 #include "netstat.h"
86 
87 char	*inetname(struct in_addr *);
88 void	inetprint(const char *, struct in_addr *, int, const char *, int);
89 #ifdef INET6
90 static int udp_done, tcp_done, sdp_done;
91 #endif /* INET6 */
92 
93 static int
94 pcblist_sysctl(int proto, const char *name, char **bufp, int istcp __unused)
95 {
96 	const char *mibvar;
97 	char *buf;
98 	size_t len;
99 
100 	switch (proto) {
101 	case IPPROTO_TCP:
102 		mibvar = "net.inet.tcp.pcblist";
103 		break;
104 	case IPPROTO_UDP:
105 		mibvar = "net.inet.udp.pcblist";
106 		break;
107 	case IPPROTO_DIVERT:
108 		mibvar = "net.inet.divert.pcblist";
109 		break;
110 	default:
111 		mibvar = "net.inet.raw.pcblist";
112 		break;
113 	}
114 	if (strncmp(name, "sdp", 3) == 0)
115 		mibvar = "net.inet.sdp.pcblist";
116 	len = 0;
117 	if (sysctlbyname(mibvar, 0, &len, 0, 0) < 0) {
118 		if (errno != ENOENT)
119 			xo_warn("sysctl: %s", mibvar);
120 		return (0);
121 	}
122 	if ((buf = malloc(len)) == 0) {
123 		xo_warnx("malloc %lu bytes", (u_long)len);
124 		return (0);
125 	}
126 	if (sysctlbyname(mibvar, buf, &len, 0, 0) < 0) {
127 		xo_warn("sysctl: %s", mibvar);
128 		free(buf);
129 		return (0);
130 	}
131 	*bufp = buf;
132 	return (1);
133 }
134 
135 /*
136  * Copied directly from uipc_socket2.c.  We leave out some fields that are in
137  * nested structures that aren't used to avoid extra work.
138  */
139 static void
140 sbtoxsockbuf(struct sockbuf *sb, struct xsockbuf *xsb)
141 {
142 	xsb->sb_cc = sb->sb_ccc;
143 	xsb->sb_hiwat = sb->sb_hiwat;
144 	xsb->sb_mbcnt = sb->sb_mbcnt;
145 	xsb->sb_mcnt = sb->sb_mcnt;
146 	xsb->sb_ccnt = sb->sb_ccnt;
147 	xsb->sb_mbmax = sb->sb_mbmax;
148 	xsb->sb_lowat = sb->sb_lowat;
149 	xsb->sb_flags = sb->sb_flags;
150 	xsb->sb_timeo = sb->sb_timeo;
151 }
152 
153 int
154 sotoxsocket(struct socket *so, struct xsocket *xso)
155 {
156 	struct protosw proto;
157 	struct domain domain;
158 
159 	bzero(xso, sizeof *xso);
160 	xso->xso_len = sizeof *xso;
161 	xso->xso_so = so;
162 	xso->so_type = so->so_type;
163 	xso->so_options = so->so_options;
164 	xso->so_linger = so->so_linger;
165 	xso->so_state = so->so_state;
166 	xso->so_pcb = so->so_pcb;
167 	if (kread((uintptr_t)so->so_proto, &proto, sizeof(proto)) != 0)
168 		return (-1);
169 	xso->xso_protocol = proto.pr_protocol;
170 	if (kread((uintptr_t)proto.pr_domain, &domain, sizeof(domain)) != 0)
171 		return (-1);
172 	xso->xso_family = domain.dom_family;
173 	xso->so_qlen = so->so_qlen;
174 	xso->so_incqlen = so->so_incqlen;
175 	xso->so_qlimit = so->so_qlimit;
176 	xso->so_timeo = so->so_timeo;
177 	xso->so_error = so->so_error;
178 	xso->so_oobmark = so->so_oobmark;
179 	sbtoxsockbuf(&so->so_snd, &xso->so_snd);
180 	sbtoxsockbuf(&so->so_rcv, &xso->so_rcv);
181 	return (0);
182 }
183 
184 static int
185 pcblist_kvm(u_long off, char **bufp, int istcp)
186 {
187 	struct inpcbinfo pcbinfo;
188 	struct inpcbhead listhead;
189 	struct inpcb *inp;
190 	struct xinpcb xi;
191 	struct xinpgen xig;
192 	struct xtcpcb xt;
193 	struct socket so;
194 	struct xsocket *xso;
195 	char *buf, *p;
196 	size_t len;
197 
198 	if (off == 0)
199 		return (0);
200 	kread(off, &pcbinfo, sizeof(pcbinfo));
201 	if (istcp)
202 		len = 2 * sizeof(xig) +
203 		    (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) *
204 		    sizeof(struct xtcpcb);
205 	else
206 		len = 2 * sizeof(xig) +
207 		    (pcbinfo.ipi_count + pcbinfo.ipi_count / 8) *
208 		    sizeof(struct xinpcb);
209 	if ((buf = malloc(len)) == 0) {
210 		xo_warnx("malloc %lu bytes", (u_long)len);
211 		return (0);
212 	}
213 	p = buf;
214 
215 #define	COPYOUT(obj, size) do {						\
216 	if (len < (size)) {						\
217 		xo_warnx("buffer size exceeded");			\
218 		goto fail;						\
219 	}								\
220 	bcopy((obj), p, (size));					\
221 	len -= (size);							\
222 	p += (size);							\
223 } while (0)
224 
225 #define	KREAD(off, buf, len) do {					\
226 	if (kread((uintptr_t)(off), (buf), (len)) != 0)			\
227 		goto fail;						\
228 } while (0)
229 
230 	/* Write out header. */
231 	xig.xig_len = sizeof xig;
232 	xig.xig_count = pcbinfo.ipi_count;
233 	xig.xig_gen = pcbinfo.ipi_gencnt;
234 	xig.xig_sogen = 0;
235 	COPYOUT(&xig, sizeof xig);
236 
237 	/* Walk the PCB list. */
238 	xt.xt_len = sizeof xt;
239 	xi.xi_len = sizeof xi;
240 	if (istcp)
241 		xso = &xt.xt_socket;
242 	else
243 		xso = &xi.xi_socket;
244 	KREAD(pcbinfo.ipi_listhead, &listhead, sizeof(listhead));
245 	LIST_FOREACH(inp, &listhead, inp_list) {
246 		if (istcp) {
247 			KREAD(inp, &xt.xt_inp, sizeof(*inp));
248 			inp = &xt.xt_inp;
249 		} else {
250 			KREAD(inp, &xi.xi_inp, sizeof(*inp));
251 			inp = &xi.xi_inp;
252 		}
253 
254 		if (inp->inp_gencnt > pcbinfo.ipi_gencnt)
255 			continue;
256 
257 		if (istcp) {
258 			if (inp->inp_ppcb == NULL)
259 				bzero(&xt.xt_tp, sizeof xt.xt_tp);
260 			else if (inp->inp_flags & INP_TIMEWAIT) {
261 				bzero(&xt.xt_tp, sizeof xt.xt_tp);
262 				xt.xt_tp.t_state = TCPS_TIME_WAIT;
263 			} else
264 				KREAD(inp->inp_ppcb, &xt.xt_tp,
265 				    sizeof xt.xt_tp);
266 		}
267 		if (inp->inp_socket) {
268 			KREAD(inp->inp_socket, &so, sizeof(so));
269 			if (sotoxsocket(&so, xso) != 0)
270 				goto fail;
271 		} else {
272 			bzero(xso, sizeof(*xso));
273 			if (istcp)
274 				xso->xso_protocol = IPPROTO_TCP;
275 		}
276 		if (istcp)
277 			COPYOUT(&xt, sizeof xt);
278 		else
279 			COPYOUT(&xi, sizeof xi);
280 	}
281 
282 	/* Reread the pcbinfo and write out the footer. */
283 	kread(off, &pcbinfo, sizeof(pcbinfo));
284 	xig.xig_count = pcbinfo.ipi_count;
285 	xig.xig_gen = pcbinfo.ipi_gencnt;
286 	COPYOUT(&xig, sizeof xig);
287 
288 	*bufp = buf;
289 	return (1);
290 
291 fail:
292 	free(buf);
293 	return (0);
294 #undef COPYOUT
295 #undef KREAD
296 }
297 
298 /*
299  * Print a summary of connections related to an Internet
300  * protocol.  For TCP, also give state of connection.
301  * Listening processes (aflag) are suppressed unless the
302  * -a (all) flag is specified.
303  */
304 void
305 protopr(u_long off, const char *name, int af1, int proto)
306 {
307 	int istcp;
308 	static int first = 1;
309 	char *buf;
310 	const char *vchar;
311 	struct tcpcb *tp = NULL;
312 	struct inpcb *inp;
313 	struct xinpgen *xig, *oxig;
314 	struct xsocket *so;
315 	struct xtcp_timer *timer;
316 
317 	istcp = 0;
318 	switch (proto) {
319 	case IPPROTO_TCP:
320 #ifdef INET6
321 		if (strncmp(name, "sdp", 3) != 0) {
322 			if (tcp_done != 0)
323 				return;
324 			else
325 				tcp_done = 1;
326 		} else {
327 			if (sdp_done != 0)
328 				return;
329 			else
330 				sdp_done = 1;
331 		}
332 #endif
333 		istcp = 1;
334 		break;
335 	case IPPROTO_UDP:
336 #ifdef INET6
337 		if (udp_done != 0)
338 			return;
339 		else
340 			udp_done = 1;
341 #endif
342 		break;
343 	}
344 	if (live) {
345 		if (!pcblist_sysctl(proto, name, &buf, istcp))
346 			return;
347 	} else {
348 		if (!pcblist_kvm(off, &buf, istcp))
349 			return;
350 	}
351 
352 	oxig = xig = (struct xinpgen *)buf;
353 	for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
354 	    xig->xig_len > sizeof(struct xinpgen);
355 	    xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
356 		if (istcp) {
357 			timer = &((struct xtcpcb *)xig)->xt_timer;
358 			tp = &((struct xtcpcb *)xig)->xt_tp;
359 			inp = &((struct xtcpcb *)xig)->xt_inp;
360 			so = &((struct xtcpcb *)xig)->xt_socket;
361 		} else {
362 			inp = &((struct xinpcb *)xig)->xi_inp;
363 			so = &((struct xinpcb *)xig)->xi_socket;
364 			timer = NULL;
365 		}
366 
367 		/* Ignore sockets for protocols other than the desired one. */
368 		if (so->xso_protocol != proto)
369 			continue;
370 
371 		/* Ignore PCBs which were freed during copyout. */
372 		if (inp->inp_gencnt > oxig->xig_gen)
373 			continue;
374 
375 		if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0)
376 #ifdef INET6
377 		    || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0)
378 #endif /* INET6 */
379 		    || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0
380 #ifdef INET6
381 					  && (inp->inp_vflag & INP_IPV6) == 0
382 #endif /* INET6 */
383 			))
384 		    )
385 			continue;
386 		if (!aflag &&
387 		    (
388 		     (istcp && tp->t_state == TCPS_LISTEN)
389 		     || (af1 == AF_INET &&
390 		      inet_lnaof(inp->inp_laddr) == INADDR_ANY)
391 #ifdef INET6
392 		     || (af1 == AF_INET6 &&
393 			 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
394 #endif /* INET6 */
395 		     || (af1 == AF_UNSPEC &&
396 			 (((inp->inp_vflag & INP_IPV4) != 0 &&
397 			   inet_lnaof(inp->inp_laddr) == INADDR_ANY)
398 #ifdef INET6
399 			  || ((inp->inp_vflag & INP_IPV6) != 0 &&
400 			      IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
401 #endif
402 			  ))
403 		     ))
404 			continue;
405 
406 		if (first) {
407 			if (!Lflag) {
408 				xo_emit("Active Internet connections");
409 				if (aflag)
410 					xo_emit(" (including servers)");
411 			} else
412 				xo_emit(
413 	"Current listen queue sizes (qlen/incqlen/maxqlen)");
414 			xo_emit("\n");
415 			if (Aflag)
416 				xo_emit("{T:/%-*s} ", 2 * (int)sizeof(void *),
417 				    "Tcpcb");
418 			if (Lflag)
419 				xo_emit((Aflag && !Wflag) ?
420 				    "{T:/%-5.5s} {T:/%-14.14s} {T:/%-18.18s}" :
421 				    "{T:/%-5.5s} {T:/%-14.14s} {T:/%-22.22s}",
422 				    "Proto", "Listen", "Local Address");
423 			else if (Tflag)
424 				xo_emit((Aflag && !Wflag) ?
425     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%s}" :
426     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%s}",
427 				    "Proto", "Rexmit", "OOORcv", "0-win",
428 				    "Local Address", "Foreign Address");
429 			else {
430 				xo_emit((Aflag && !Wflag) ?
431     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%-18.18s}" :
432     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%-22.22s}",
433 				    "Proto", "Recv-Q", "Send-Q",
434 				    "Local Address", "Foreign Address");
435 				if (!xflag && !Rflag)
436 					xo_emit(" (state)");
437 			}
438 			if (xflag) {
439 				xo_emit(" {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
440 				    "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
441 				    "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
442 				    "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s}",
443 				    "R-MBUF", "S-MBUF", "R-CLUS", "S-CLUS",
444 				    "R-HIWA", "S-HIWA", "R-LOWA", "S-LOWA",
445 				    "R-BCNT", "S-BCNT", "R-BMAX", "S-BMAX");
446 				xo_emit(" {T:/%7.7s} {T:/%7.7s} {T:/%7.7s} "
447 				    "{T:/%7.7s} {T:/%7.7s} {T:/%7.7s}",
448 				    "rexmt", "persist", "keep", "2msl",
449 				    "delack", "rcvtime");
450 			} else if (Rflag) {
451 				xo_emit("  {T:/%8.8s} {T:/%5.5s}",
452 				    "flowid", "ftype");
453 			}
454 			xo_emit("\n");
455 			first = 0;
456 		}
457 		if (Lflag && so->so_qlimit == 0)
458 			continue;
459 		xo_open_instance("socket");
460 		if (Aflag) {
461 			if (istcp)
462 				xo_emit("{q:address/%*lx} ",
463 				    2 * (int)sizeof(void *),
464 				    (u_long)inp->inp_ppcb);
465 			else
466 				xo_emit("{q:adddress/%*lx} ",
467 				    2 * (int)sizeof(void *),
468 				    (u_long)so->so_pcb);
469 		}
470 #ifdef INET6
471 		if ((inp->inp_vflag & INP_IPV6) != 0)
472 			vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
473 			    "46" : "6";
474 		else
475 #endif
476 		vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
477 		    "4" : "";
478 		if (istcp && (tp->t_flags & TF_TOE) != 0)
479 			xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", "toe", vchar);
480 		else
481 			xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", name, vchar);
482 		if (Lflag) {
483 			char buf1[15];
484 
485 			snprintf(buf1, 15, "%d/%d/%d", so->so_qlen,
486 			    so->so_incqlen, so->so_qlimit);
487 			xo_emit("{:listen-queue-sizes/%-14.14s} ", buf1);
488 		} else if (Tflag) {
489 			if (istcp)
490 				xo_emit("{:sent-retransmit-packets/%6u} "
491 				    "{:received-out-of-order-packets/%6u} "
492 				    "{:sent-zero-window/%6u} ",
493 				    tp->t_sndrexmitpack, tp->t_rcvoopack,
494 				    tp->t_sndzerowin);
495 		} else {
496 			xo_emit("{:receive-bytes-waiting/%6u} "
497 			    "{:send-bytes-waiting/%6u} ",
498 			    so->so_rcv.sb_cc, so->so_snd.sb_cc);
499 		}
500 		if (numeric_port) {
501 			if (inp->inp_vflag & INP_IPV4) {
502 				inetprint("local", &inp->inp_laddr,
503 				    (int)inp->inp_lport, name, 1);
504 				if (!Lflag)
505 					inetprint("remote", &inp->inp_faddr,
506 					    (int)inp->inp_fport, name, 1);
507 			}
508 #ifdef INET6
509 			else if (inp->inp_vflag & INP_IPV6) {
510 				inet6print("local", &inp->in6p_laddr,
511 				    (int)inp->inp_lport, name, 1);
512 				if (!Lflag)
513 					inet6print("remote", &inp->in6p_faddr,
514 					    (int)inp->inp_fport, name, 1);
515 			} /* else nothing printed now */
516 #endif /* INET6 */
517 		} else if (inp->inp_flags & INP_ANONPORT) {
518 			if (inp->inp_vflag & INP_IPV4) {
519 				inetprint("local", &inp->inp_laddr,
520 				    (int)inp->inp_lport, name, 1);
521 				if (!Lflag)
522 					inetprint("remote", &inp->inp_faddr,
523 					    (int)inp->inp_fport, name, 0);
524 			}
525 #ifdef INET6
526 			else if (inp->inp_vflag & INP_IPV6) {
527 				inet6print("local", &inp->in6p_laddr,
528 				    (int)inp->inp_lport, name, 1);
529 				if (!Lflag)
530 					inet6print("remote", &inp->in6p_faddr,
531 					    (int)inp->inp_fport, name, 0);
532 			} /* else nothing printed now */
533 #endif /* INET6 */
534 		} else {
535 			if (inp->inp_vflag & INP_IPV4) {
536 				inetprint("local", &inp->inp_laddr,
537 				    (int)inp->inp_lport, name, 0);
538 				if (!Lflag)
539 					inetprint("remote", &inp->inp_faddr,
540 					    (int)inp->inp_fport, name,
541 					    inp->inp_lport != inp->inp_fport);
542 			}
543 #ifdef INET6
544 			else if (inp->inp_vflag & INP_IPV6) {
545 				inet6print("local", &inp->in6p_laddr,
546 				    (int)inp->inp_lport, name, 0);
547 				if (!Lflag)
548 					inet6print("remote", &inp->in6p_faddr,
549 					    (int)inp->inp_fport, name,
550 					    inp->inp_lport != inp->inp_fport);
551 			} /* else nothing printed now */
552 #endif /* INET6 */
553 		}
554 		if (xflag) {
555 			xo_emit("{:receive-mbufs/%6u} {:send-mbufs/%6u} "
556 			    "{:receive-clusters/%6u} {:send-clusters/%6u} "
557 			    "{:receive-high-water/%6u} {:send-high-water/%6u} "
558 			    "{:receive-low-water/%6u} {:send-low-water/%6u} "
559 			    "{:receive-mbuf-bytes/%6u} {:send-mbuf-bytes/%6u} "
560 			    "{:receive-mbuf-bytes-max/%6u} "
561 			    "{:send-mbuf-bytes-max/%6u}",
562 			    so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt,
563 			    so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt,
564 			    so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat,
565 			    so->so_rcv.sb_lowat, so->so_snd.sb_lowat,
566 			    so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt,
567 			    so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax);
568 			if (timer != NULL)
569 				xo_emit(" {:retransmit-timer/%4d.%02d} "
570 				    "{:persist-timer/%4d.%02d} "
571 				    "{:keepalive-timer/%4d.%02d} "
572 				    "{:msl2-timer/%4d.%02d} "
573 				    "{:delay-ack-timer/%4d.%02d} "
574 				    "{:inactivity-timer/%4d.%02d}",
575 				    timer->tt_rexmt / 1000,
576 				    (timer->tt_rexmt % 1000) / 10,
577 				    timer->tt_persist / 1000,
578 				    (timer->tt_persist % 1000) / 10,
579 				    timer->tt_keep / 1000,
580 				    (timer->tt_keep % 1000) / 10,
581 				    timer->tt_2msl / 1000,
582 				    (timer->tt_2msl % 1000) / 10,
583 				    timer->tt_delack / 1000,
584 				    (timer->tt_delack % 1000) / 10,
585 				    timer->t_rcvtime / 1000,
586 				    (timer->t_rcvtime % 1000) / 10);
587 		}
588 		if (istcp && !Lflag && !xflag && !Tflag && !Rflag) {
589 			if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES)
590 				xo_emit("{:tcp-state/%d}", tp->t_state);
591 			else {
592 				xo_emit("{:tcp-state/%s}",
593 				    tcpstates[tp->t_state]);
594 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
595 				/* Show T/TCP `hidden state' */
596 				if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN))
597 					xo_emit("{:need-syn-or-fin/*}");
598 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
599 			}
600 		}
601 		if (Rflag) {
602 			/* XXX: is this right Alfred */
603 			xo_emit(" {:flow-id/%08x} {:flow-type/%5d}",
604 			    inp->inp_flowid,
605 			    inp->inp_flowtype);
606 		}
607 		xo_emit("\n");
608 		xo_close_instance("socket");
609 	}
610 	if (xig != oxig && xig->xig_gen != oxig->xig_gen) {
611 		if (oxig->xig_count > xig->xig_count) {
612 			xo_emit("Some {d:lost/%s} sockets may have been "
613 			    "deleted.\n", name);
614 		} else if (oxig->xig_count < xig->xig_count) {
615 			xo_emit("Some {d:created/%s} sockets may have been "
616 			    "created.\n", name);
617 		} else {
618 			xo_emit("Some {d:changed/%s} sockets may have been "
619 			    "created or deleted.\n", name);
620 		}
621 	}
622 	free(buf);
623 }
624 
625 /*
626  * Dump TCP statistics structure.
627  */
628 void
629 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
630 {
631 	struct tcpstat tcpstat, zerostat;
632 	size_t len = sizeof tcpstat;
633 
634 #ifdef INET6
635 	if (tcp_done != 0)
636 		return;
637 	else
638 		tcp_done = 1;
639 #endif
640 
641 	if (live) {
642 		if (zflag)
643 			memset(&zerostat, 0, len);
644 		if (sysctlbyname("net.inet.tcp.stats", &tcpstat, &len,
645 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
646 			xo_warn("sysctl: net.inet.tcp.stats");
647 			return;
648 		}
649 	} else
650 		kread_counters(off, &tcpstat, len);
651 
652 	xo_open_container("tcp");
653 	xo_emit("{T:/%s}:\n", name);
654 
655 #define	p(f, m) if (tcpstat.f || sflag <= 1)				\
656 	xo_emit(m, (uintmax_t )tcpstat.f, plural(tcpstat.f))
657 #define	p1a(f, m) if (tcpstat.f || sflag <= 1)				\
658 	xo_emit(m, (uintmax_t )tcpstat.f)
659 #define	p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)	\
660 	xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),		\
661 	    (uintmax_t )tcpstat.f2, plural(tcpstat.f2))
662 #define	p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)	\
663 	xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),		\
664 	    (uintmax_t )tcpstat.f2)
665 #define	p3(f, m) if (tcpstat.f || sflag <= 1)				\
666 	xo_emit(m, (uintmax_t )tcpstat.f, pluralies(tcpstat.f))
667 
668 	p(tcps_sndtotal, "\t{:sent-packets/%ju} {N:/packet%s sent}\n");
669 	p2(tcps_sndpack,tcps_sndbyte, "\t\t{:sent-data-packets/%ju} "
670 	    "{N:/data packet%s} ({:sent-data-bytes/%ju} {N:/byte%s})\n");
671 	p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, "\t\t"
672 	    "{:sent-retransmitted-packets/%ju} {N:/data packet%s} "
673 	    "({:sent-retransmitted-bytes/%ju} {N:/byte%s}) "
674 	    "{N:retransmitted}\n");
675 	p(tcps_sndrexmitbad, "\t\t"
676 	    "{:sent-unnecessary-retransmitted-packets/%ju} "
677 	    "{N:/data packet%s unnecessarily retransmitted}\n");
678 	p(tcps_mturesent, "\t\t{:sent-resends-by-mtu-discovery/%ju} "
679 	    "{N:/resend%s initiated by MTU discovery}\n");
680 	p2a(tcps_sndacks, tcps_delack, "\t\t{:sent-ack-only-packets/%ju} "
681 	    "{N:/ack-only packet%s/} ({:sent-packets-delayed/%ju} "
682 	    "{N:delayed})\n");
683 	p(tcps_sndurg, "\t\t{:sent-urg-only-packets/%ju} "
684 	    "{N:/URG only packet%s}\n");
685 	p(tcps_sndprobe, "\t\t{:sent-window-probe-packets/%ju} "
686 	    "{N:/window probe packet%s}\n");
687 	p(tcps_sndwinup, "\t\t{:sent-window-update-packets/%ju} "
688 	    "{N:/window update packet%s}\n");
689 	p(tcps_sndctrl, "\t\t{:sent-control-packets/%ju} "
690 	    "{N:/control packet%s}\n");
691 	p(tcps_rcvtotal, "\t{:received-packets/%ju} "
692 	    "{N:/packet%s received}\n");
693 	p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t"
694 	    "{:received-ack-packets/%ju} {N:/ack%s} "
695 	    "{N:(for} {:received-ack-bytes/%ju} {N:/byte%s})\n");
696 	p(tcps_rcvdupack, "\t\t{:received-duplicate-acks/%ju} "
697 	    "{N:/duplicate ack%s}\n");
698 	p(tcps_rcvacktoomuch, "\t\t{:received-acks-for-unsent-data/%ju} "
699 	    "{N:/ack%s for unsent data}\n");
700 	p2(tcps_rcvpack, tcps_rcvbyte, "\t\t"
701 	    "{:received-in-sequence-packets/%ju} {N:/packet%s} "
702 	    "({:received-in-sequence-bytes/%ju} {N:/byte%s}) "
703 	    "{N:received in-sequence}\n");
704 	p2(tcps_rcvduppack, tcps_rcvdupbyte, "\t\t"
705 	    "{:received-completely-duplicate-packets/%ju} "
706 	    "{N:/completely duplicate packet%s} "
707 	    "({:received-completely-duplicate-bytes/%ju} {N:/byte%s})\n");
708 	p(tcps_pawsdrop, "\t\t{:received-old-duplicate-packets/%ju} "
709 	    "{N:/old duplicate packet%s}\n");
710 	p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, "\t\t"
711 	    "{:received-some-duplicate-packets/%ju} "
712 	    "{N:/packet%s with some dup. data} "
713 	    "({:received-some-duplicate-bytes/%ju} {N:/byte%s duped/})\n");
714 	p2(tcps_rcvoopack, tcps_rcvoobyte, "\t\t{:received-out-of-order/%ju} "
715 	    "{N:/out-of-order packet%s} "
716 	    "({:received-out-of-order-bytes/%ju} {N:/byte%s})\n");
717 	p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, "\t\t"
718 	    "{:received-after-window-packets/%ju} {N:/packet%s} "
719 	    "({:received-after-window-bytes/%ju} {N:/byte%s}) "
720 	    "{N:of data after window}\n");
721 	p(tcps_rcvwinprobe, "\t\t{:received-window-probes/%ju} "
722 	    "{N:/window probe%s}\n");
723 	p(tcps_rcvwinupd, "\t\t{:receive-window-update-packets/%ju} "
724 	    "{N:/window update packet%s}\n");
725 	p(tcps_rcvafterclose, "\t\t{:received-after-close-packets/%ju} "
726 	    "{N:/packet%s received after close}\n");
727 	p(tcps_rcvbadsum, "\t\t{:discard-bad-checksum/%ju} "
728 	    "{N:/discarded for bad checksum%s}\n");
729 	p(tcps_rcvbadoff, "\t\t{:discard-bad-header-offset/%ju} "
730 	    "{N:/discarded for bad header offset field%s}\n");
731 	p1a(tcps_rcvshort, "\t\t{:discard-too-short/%ju} "
732 	    "{N:discarded because packet too short}\n");
733 	p1a(tcps_rcvmemdrop, "\t\t{:discard-memory-problems/%ju} "
734 	    "{N:discarded due to memory problems}\n");
735 	p(tcps_connattempt, "\t{:connection-requests/%ju} "
736 	    "{N:/connection request%s}\n");
737 	p(tcps_accepts, "\t{:connections-accepts/%ju} "
738 	    "{N:/connection accept%s}\n");
739 	p(tcps_badsyn, "\t{:bad-connection-attempts/%ju} "
740 	    "{N:/bad connection attempt%s}\n");
741 	p(tcps_listendrop, "\t{:listen-queue-overflows/%ju} "
742 	    "{N:/listen queue overflow%s}\n");
743 	p(tcps_badrst, "\t{:ignored-in-window-resets/%ju} "
744 	    "{N:/ignored RSTs in the window%s}\n");
745 	p(tcps_connects, "\t{:connections-established/%ju} "
746 	    "{N:/connection%s established (including accepts)}\n");
747 	p2(tcps_closed, tcps_drops, "\t{:connections-closed/%ju} "
748 	    "{N:/connection%s closed (including} "
749 	    "{:connection-drops/%ju} {N:/drop%s})\n");
750 	p(tcps_cachedrtt, "\t\t{:connections-updated-rtt-on-close/%ju} "
751 	    "{N:/connection%s updated cached RTT on close}\n");
752 	p(tcps_cachedrttvar, "\t\t"
753 	    "{:connections-updated-variance-on-close/%ju} "
754 	    "{N:/connection%s updated cached RTT variance on close}\n");
755 	p(tcps_cachedssthresh, "\t\t"
756 	    "{:connections-updated-ssthresh-on-close/%ju} "
757 	    "{N:/connection%s updated cached ssthresh on close}\n");
758 	p(tcps_conndrops, "\t{:embryonic-connections-dropped/%ju} "
759 	    "{N:/embryonic connection%s dropped}\n");
760 	p2(tcps_rttupdated, tcps_segstimed, "\t{:segments-updated-rtt/%ju} "
761 	    "{N:/segment%s updated rtt (of} "
762 	    "{:segment-update-attempts/%ju} {N:/attempt%s})\n");
763 	p(tcps_rexmttimeo, "\t{:retransmit-timeouts/%ju} "
764 	    "{N:/retransmit timeout%s}\n");
765 	p(tcps_timeoutdrop, "\t\t"
766 	    "{:connections-dropped-by-retransmit-timeout/%ju} "
767 	    "{N:/connection%s dropped by rexmit timeout}\n");
768 	p(tcps_persisttimeo, "\t{:persist-timeout/%ju} "
769 	    "{N:/persist timeout%s}\n");
770 	p(tcps_persistdrop, "\t\t"
771 	    "{:connections-dropped-by-persist-timeout/%ju} "
772 	    "{N:/connection%s dropped by persist timeout}\n");
773 	p(tcps_finwait2_drops, "\t"
774 	    "{:connections-dropped-by-finwait2-timeout/%ju} "
775 	    "{N:/Connection%s (fin_wait_2) dropped because of timeout}\n");
776 	p(tcps_keeptimeo, "\t{:keepalive-timeout/%ju} "
777 	    "{N:/keepalive timeout%s}\n");
778 	p(tcps_keepprobe, "\t\t{:keepalive-probes/%ju} "
779 	    "{N:/keepalive probe%s sent}\n");
780 	p(tcps_keepdrops, "\t\t{:connections-dropped-by-keepalives/%ju} "
781 	    "{N:/connection%s dropped by keepalive}\n");
782 	p(tcps_predack, "\t{:ack-header-predictions/%ju} "
783 	    "{N:/correct ACK header prediction%s}\n");
784 	p(tcps_preddat, "\t{:data-packet-header-predictions/%ju} "
785 	    "{N:/correct data packet header prediction%s}\n");
786 
787 	xo_open_container("syncache");
788 
789 	p3(tcps_sc_added, "\t{:entries-added/%ju} "
790 	    "{N:/syncache entr%s added}\n");
791 	p1a(tcps_sc_retransmitted, "\t\t{:retransmitted/%ju} "
792 	    "{N:/retransmitted}\n");
793 	p1a(tcps_sc_dupsyn, "\t\t{:duplicates/%ju} {N:/dupsyn}\n");
794 	p1a(tcps_sc_dropped, "\t\t{:dropped/%ju} {N:/dropped}\n");
795 	p1a(tcps_sc_completed, "\t\t{:completed/%ju} {N:/completed}\n");
796 	p1a(tcps_sc_bucketoverflow, "\t\t{:bucket-overflow/%ju} "
797 	    "{N:/bucket overflow}\n");
798 	p1a(tcps_sc_cacheoverflow, "\t\t{:cache-overflow/%ju} "
799 	    "{N:/cache overflow}\n");
800 	p1a(tcps_sc_reset, "\t\t{:reset/%ju} {N:/reset}\n");
801 	p1a(tcps_sc_stale, "\t\t{:stale/%ju} {N:/stale}\n");
802 	p1a(tcps_sc_aborted, "\t\t{:aborted/%ju} {N:/aborted}\n");
803 	p1a(tcps_sc_badack, "\t\t{:bad-ack/%ju} {N:/badack}\n");
804 	p1a(tcps_sc_unreach, "\t\t{:unreachable/%ju} {N:/unreach}\n");
805 	p(tcps_sc_zonefail, "\t\t{:zone-failures/%ju} {N:/zone failure%s}\n");
806 	p(tcps_sc_sendcookie, "\t{:sent-cookies/%ju} {N:/cookie%s sent}\n");
807 	p(tcps_sc_recvcookie, "\t{:receivd-cookies/%ju} "
808 	    "{N:/cookie%s received}\n");
809 
810 	xo_close_container("syncache");
811 
812 	xo_open_container("hostcache");
813 
814 	p3(tcps_hc_added, "\t{:entries-added/%ju} "
815 	    "{N:/hostcache entr%s added}\n");
816 	p1a(tcps_hc_bucketoverflow, "\t\t{:buffer-overflows/%ju} "
817 	    "{N:/bucket overflow}\n");
818 
819 	xo_close_container("hostcache");
820 
821 	xo_open_container("sack");
822 
823 	p(tcps_sack_recovery_episode, "\t{:recovery-episodes/%ju} "
824 	    "{N:/SACK recovery episode%s}\n");
825  	p(tcps_sack_rexmits, "\t{:segment-retransmits/%ju} "
826 	    "{N:/segment rexmit%s in SACK recovery episodes}\n");
827  	p(tcps_sack_rexmit_bytes, "\t{:byte-retransmits/%ju} "
828 	    "{N:/byte rexmit%s in SACK recovery episodes}\n");
829  	p(tcps_sack_rcv_blocks, "\t{:received-blocks/%ju} "
830 	    "{N:/SACK option%s (SACK blocks) received}\n");
831 	p(tcps_sack_send_blocks, "\t{:sent-option-blocks/%ju} "
832 	    "{N:/SACK option%s (SACK blocks) sent}\n");
833 	p1a(tcps_sack_sboverflow, "\t{:scoreboard-overflows/%ju} "
834 	    "{N:/SACK scoreboard overflow}\n");
835 
836 	xo_close_container("sack");
837 	xo_open_container("ecn");
838 
839 	p(tcps_ecn_ce, "\t{:ce-packets/%ju} "
840 	    "{N:/packet%s with ECN CE bit set}\n");
841 	p(tcps_ecn_ect0, "\t{:ect0-packets/%ju} "
842 	    "{N:/packet%s with ECN ECT(0) bit set}\n");
843 	p(tcps_ecn_ect1, "\t{:ect1-packets/%ju} "
844 	    "{N:/packet%s with ECN ECT(1) bit set}\n");
845 	p(tcps_ecn_shs, "\t{:handshakes/%ju} "
846 	    "{N:/successful ECN handshake%s}\n");
847 	p(tcps_ecn_rcwnd, "\t{:congestion-reductions/%ju} "
848 	    "{N:/time%s ECN reduced the congestion window}\n");
849  #undef p
850  #undef p1a
851  #undef p2
852  #undef p2a
853  #undef p3
854 	xo_close_container("ecn");
855 	xo_close_container("tcp");
856 }
857 
858 /*
859  * Dump UDP statistics structure.
860  */
861 void
862 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
863 {
864 	struct udpstat udpstat, zerostat;
865 	size_t len = sizeof udpstat;
866 	uint64_t delivered;
867 
868 #ifdef INET6
869 	if (udp_done != 0)
870 		return;
871 	else
872 		udp_done = 1;
873 #endif
874 
875 	if (live) {
876 		if (zflag)
877 			memset(&zerostat, 0, len);
878 		if (sysctlbyname("net.inet.udp.stats", &udpstat, &len,
879 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
880 			xo_warn("sysctl: net.inet.udp.stats");
881 			return;
882 		}
883 	} else
884 		kread_counters(off, &udpstat, len);
885 
886 	xo_open_container("udp");
887 	xo_emit("{T:/%s}:\n", name);
888 
889 #define	p(f, m) if (udpstat.f || sflag <= 1) \
890 	xo_emit("\t" m, (uintmax_t)udpstat.f, plural(udpstat.f))
891 #define	p1a(f, m) if (udpstat.f || sflag <= 1) \
892 	xo_emit("\t" m, (uintmax_t)udpstat.f)
893 
894 	p(udps_ipackets, "{:received-datagrams/%ju} "
895 	    "{N:/datagram%s received}\n");
896 	p1a(udps_hdrops, "{:dropped-incomplete-headers/%ju} "
897 	    "{N:/with incomplete header}\n");
898 	p1a(udps_badlen, "{:dropped-bad-data-length/%ju} "
899 	    "{N:/with bad data length field}\n");
900 	p1a(udps_badsum, "{:dropped-bad-checksum/%ju} "
901 	    "{N:/with bad checksum}\n");
902 	p1a(udps_nosum, "{:dropped-no-checksum/%ju} "
903 	    "{N:/with no checksum}\n");
904 	p1a(udps_noport, "{:dropped-no-socket/%ju} "
905 	    "{N:/dropped due to no socket}\n");
906 	p(udps_noportbcast, "{:dropped-broadcast-multicast/%ju} "
907 	    "{N:/broadcast\\/multicast datagram%s undelivered}\n");
908 	p1a(udps_fullsock, "{:dropped-full-socket-buffer/%ju} "
909 	    "{N:/dropped due to full socket buffers}\n");
910 	p1a(udpps_pcbhashmiss, "{:not-for-hashed-pcb/%ju} "
911 	    "{N:/not for hashed pcb}\n");
912 	delivered = udpstat.udps_ipackets -
913 		    udpstat.udps_hdrops -
914 		    udpstat.udps_badlen -
915 		    udpstat.udps_badsum -
916 		    udpstat.udps_noport -
917 		    udpstat.udps_noportbcast -
918 		    udpstat.udps_fullsock;
919 	if (delivered || sflag <= 1)
920 		xo_emit("\t{:delivered-packets/%ju} {N:/delivered}\n",
921 		    (uint64_t)delivered);
922 	p(udps_opackets, "{:output-packets/%ju} {N:/datagram%s output}\n");
923 	/* the next statistic is cumulative in udps_noportbcast */
924 	p(udps_filtermcast, "{:multicast-source-filter-matches/%ju} "
925 	    "{N:/time%s multicast source filter matched}\n");
926 #undef p
927 #undef p1a
928 	xo_close_container("udp");
929 }
930 
931 /*
932  * Dump CARP statistics structure.
933  */
934 void
935 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
936 {
937 	struct carpstats carpstat, zerostat;
938 	size_t len = sizeof(struct carpstats);
939 
940 	if (live) {
941 		if (zflag)
942 			memset(&zerostat, 0, len);
943 		if (sysctlbyname("net.inet.carp.stats", &carpstat, &len,
944 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
945 			if (errno != ENOENT)
946 				xo_warn("sysctl: net.inet.carp.stats");
947 			return;
948 		}
949 	} else {
950 		if (off == 0)
951 			return;
952 		kread_counters(off, &carpstat, len);
953 	}
954 
955 	xo_open_container(name);
956 	xo_emit("{T:/%s}:\n", name);
957 
958 #define	p(f, m) if (carpstat.f || sflag <= 1) \
959 	xo_emit(m, (uintmax_t)carpstat.f, plural(carpstat.f))
960 #define	p2(f, m) if (carpstat.f || sflag <= 1) \
961 	xo_emit(m, (uintmax_t)carpstat.f)
962 
963 	p(carps_ipackets, "\t{:received-inet-packets/%ju} "
964 	    "{N:/packet%s received (IPv4)}\n");
965 	p(carps_ipackets6, "\t{:received-inet6-packets/%ju} "
966 	    "{N:/packet%s received (IPv6)}\n");
967 	p(carps_badttl, "\t\t{:dropped-wrong-ttl/%ju} "
968 	    "{N:/packet%s discarded for wrong TTL}\n");
969 	p(carps_hdrops, "\t\t{:dropped-short-header/%ju} "
970 	    "{N:/packet%s shorter than header}\n");
971 	p(carps_badsum, "\t\t{:dropped-bad-checksum/%ju} "
972 	    "{N:/discarded for bad checksum%s}\n");
973 	p(carps_badver,	"\t\t{:dropped-bad-version/%ju} "
974 	    "{N:/discarded packet%s with a bad version}\n");
975 	p2(carps_badlen, "\t\t{:dropped-short-packet/%ju} "
976 	    "{N:/discarded because packet too short}\n");
977 	p2(carps_badauth, "\t\t{:dropped-bad-authentication/%ju} "
978 	    "{N:/discarded for bad authentication}\n");
979 	p2(carps_badvhid, "\t\t{:dropped-bad-vhid/%ju} "
980 	    "{N:/discarded for bad vhid}\n");
981 	p2(carps_badaddrs, "\t\t{:dropped-bad-address-list/%ju} "
982 	    "{N:/discarded because of a bad address list}\n");
983 	p(carps_opackets, "\t{:sent-inet-packets/%ju} "
984 	    "{N:/packet%s sent (IPv4)}\n");
985 	p(carps_opackets6, "\t{:sent-inet6-packets/%ju} "
986 	    "{N:/packet%s sent (IPv6)}\n");
987 	p2(carps_onomem, "\t\t{:send-failed-memory-error/%ju} "
988 	    "{N:/send failed due to mbuf memory error}\n");
989 #if notyet
990 	p(carps_ostates, "\t\t{:send-state-updates/%s} "
991 	    "{N:/state update%s sent}\n");
992 #endif
993 #undef p
994 #undef p2
995 	xo_close_container(name);
996 }
997 
998 /*
999  * Dump IP statistics structure.
1000  */
1001 void
1002 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1003 {
1004 	struct ipstat ipstat, zerostat;
1005 	size_t len = sizeof ipstat;
1006 
1007 	if (live) {
1008 		if (zflag)
1009 			memset(&zerostat, 0, len);
1010 		if (sysctlbyname("net.inet.ip.stats", &ipstat, &len,
1011 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1012 			xo_warn("sysctl: net.inet.ip.stats");
1013 			return;
1014 		}
1015 	} else
1016 		kread_counters(off, &ipstat, len);
1017 
1018 	xo_open_container(name);
1019 	xo_emit("{T:/%s}:\n", name);
1020 
1021 #define	p(f, m) if (ipstat.f || sflag <= 1) \
1022 	xo_emit(m, (uintmax_t )ipstat.f, plural(ipstat.f))
1023 #define	p1a(f, m) if (ipstat.f || sflag <= 1) \
1024 	xo_emit(m, (uintmax_t )ipstat.f)
1025 
1026 	p(ips_total, "\t{:received-packets/%ju} "
1027 	    "{N:/total packet%s received}\n");
1028 	p(ips_badsum, "\t{:dropped-bad-checksum/%ju} "
1029 	    "{N:/bad header checksum%s}\n");
1030 	p1a(ips_toosmall, "\t{:dropped-below-minimum-size/%ju} "
1031 	    "{N:/with size smaller than minimum}\n");
1032 	p1a(ips_tooshort, "\t{:dropped-short-packets/%ju} "
1033 	    "{N:/with data size < data length}\n");
1034 	p1a(ips_toolong, "\t{:dropped-too-long/%ju} "
1035 	    "{N:/with ip length > max ip packet size}\n");
1036 	p1a(ips_badhlen, "\t{:dropped-short-header-length/%ju} "
1037 	    "{N:/with header length < data size}\n");
1038 	p1a(ips_badlen, "\t{:dropped-short-data/%ju} "
1039 	    "{N:/with data length < header length}\n");
1040 	p1a(ips_badoptions, "\t{:dropped-bad-options/%ju} "
1041 	    "{N:/with bad options}\n");
1042 	p1a(ips_badvers, "\t{:dropped-bad-version/%ju} "
1043 	    "{N:/with incorrect version number}\n");
1044 	p(ips_fragments, "\t{:received-fragments/%ju} "
1045 	    "{N:/fragment%s received}\n");
1046 	p(ips_fragdropped, "\t{:dropped-fragments/%ju} "
1047 	    "{N:/fragment%s dropped (dup or out of space)}\n");
1048 	p(ips_fragtimeout, "\t{:dropped-fragments-after-timeout/%ju} "
1049 	    "{N:/fragment%s dropped after timeout}\n");
1050 	p(ips_reassembled, "\t{:reassembled-packets/%ju} "
1051 	    "{N:/packet%s reassembled ok}\n");
1052 	p(ips_delivered, "\t{:received-local-packets/%ju} "
1053 	    "{N:/packet%s for this host}\n");
1054 	p(ips_noproto, "\t{:dropped-unknown-protocol/%ju} "
1055 	    "{N:/packet%s for unknown\\/unsupported protocol}\n");
1056 	p(ips_forward, "\t{:forwarded-packets/%ju} "
1057 	    "{N:/packet%s forwarded}");
1058 	p(ips_fastforward, " ({:fast-forwarded-packets/%ju} "
1059 	    "{N:/packet%s fast forwarded})");
1060 	if (ipstat.ips_forward || sflag <= 1)
1061 		xo_emit("\n");
1062 	p(ips_cantforward, "\t{:packets-cannot-forward/%ju} "
1063 	    "{N:/packet%s not forwardable}\n");
1064 	p(ips_notmember, "\t{:received-unknown-multicast-group/%ju} "
1065 	    "{N:/packet%s received for unknown multicast group}\n");
1066 	p(ips_redirectsent, "\t{:redirects-sent/%ju} "
1067 	    "{N:/redirect%s sent}\n");
1068 	p(ips_localout, "\t{:sent-packets/%ju} "
1069 	    "{N:/packet%s sent from this host}\n");
1070 	p(ips_rawout, "\t{:send-packets-fabricated-header/%ju} "
1071 	    "{N:/packet%s sent with fabricated ip header}\n");
1072 	p(ips_odropped, "\t{:discard-no-mbufs/%ju} "
1073 	    "{N:/output packet%s dropped due to no bufs, etc.}\n");
1074 	p(ips_noroute, "\t{:discard-no-route/%ju} "
1075 	    "{N:/output packet%s discarded due to no route}\n");
1076 	p(ips_fragmented, "\t{:sent-fragments/%ju} "
1077 	    "{N:/output datagram%s fragmented}\n");
1078 	p(ips_ofragments, "\t{:fragments-created/%ju} "
1079 	    "{N:/fragment%s created}\n");
1080 	p(ips_cantfrag, "\t{:discard-cannot-fragment/%ju} "
1081 	    "{N:/datagram%s that can't be fragmented}\n");
1082 	p(ips_nogif, "\t{:discard-tunnel-no-gif/%ju} "
1083 	    "{N:/tunneling packet%s that can't find gif}\n");
1084 	p(ips_badaddr, "\t{:discard-bad-address/%ju} "
1085 	    "{N:/datagram%s with bad address in header}\n");
1086 #undef p
1087 #undef p1a
1088 	xo_close_container(name);
1089 }
1090 
1091 /*
1092  * Dump ARP statistics structure.
1093  */
1094 void
1095 arp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1096 {
1097 	struct arpstat arpstat, zerostat;
1098 	size_t len = sizeof(arpstat);
1099 
1100 	if (live) {
1101 		if (zflag)
1102 			memset(&zerostat, 0, len);
1103 		if (sysctlbyname("net.link.ether.arp.stats", &arpstat, &len,
1104 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1105 			xo_warn("sysctl: net.link.ether.arp.stats");
1106 			return;
1107 		}
1108 	} else
1109 		kread_counters(off, &arpstat, len);
1110 
1111 	xo_open_container(name);
1112 	xo_emit("{T:/%s}:\n", name);
1113 
1114 #define	p(f, m) if (arpstat.f || sflag <= 1) \
1115 	xo_emit("\t" m, (uintmax_t)arpstat.f, plural(arpstat.f))
1116 #define	p2(f, m) if (arpstat.f || sflag <= 1) \
1117 	xo_emit("\t" m, (uintmax_t)arpstat.f, pluralies(arpstat.f))
1118 
1119 	p(txrequests, "{:sent-requests/%ju} {N:/ARP request%s sent}\n");
1120 	p2(txreplies, "{:sent-replies/%ju} {N:/ARP repl%s sent}\n");
1121 	p(rxrequests, "{:received-requests/%ju} "
1122 	    "{N:/ARP request%s received}\n");
1123 	p2(rxreplies, "{:received-replies/%ju} "
1124 	    "{N:/ARP repl%s received}\n");
1125 	p(received, "{:received-packers/%ju} "
1126 	    "{N:/ARP packet%s received}\n");
1127 	p(dropped, "{:dropped-no-entry/%ju} "
1128 	    "{N:/total packet%s dropped due to no ARP entry}\n");
1129 	p(timeouts, "{:entries-timeout/%ju} "
1130 	    "{N:/ARP entry%s timed out}\n");
1131 	p(dupips, "{:dropped-duplicate-address/%ju} "
1132 	    "{N:/Duplicate IP%s seen}\n");
1133 #undef p
1134 #undef p2
1135 	xo_close_container(name);
1136 }
1137 
1138 
1139 
1140 static	const char *icmpnames[ICMP_MAXTYPE + 1] = {
1141 	"echo reply",			/* RFC 792 */
1142 	"#1",
1143 	"#2",
1144 	"destination unreachable",	/* RFC 792 */
1145 	"source quench",		/* RFC 792 */
1146 	"routing redirect",		/* RFC 792 */
1147 	"#6",
1148 	"#7",
1149 	"echo",				/* RFC 792 */
1150 	"router advertisement",		/* RFC 1256 */
1151 	"router solicitation",		/* RFC 1256 */
1152 	"time exceeded",		/* RFC 792 */
1153 	"parameter problem",		/* RFC 792 */
1154 	"time stamp",			/* RFC 792 */
1155 	"time stamp reply",		/* RFC 792 */
1156 	"information request",		/* RFC 792 */
1157 	"information request reply",	/* RFC 792 */
1158 	"address mask request",		/* RFC 950 */
1159 	"address mask reply",		/* RFC 950 */
1160 	"#19",
1161 	"#20",
1162 	"#21",
1163 	"#22",
1164 	"#23",
1165 	"#24",
1166 	"#25",
1167 	"#26",
1168 	"#27",
1169 	"#28",
1170 	"#29",
1171 	"icmp traceroute",		/* RFC 1393 */
1172 	"datagram conversion error",	/* RFC 1475 */
1173 	"mobile host redirect",
1174 	"IPv6 where-are-you",
1175 	"IPv6 i-am-here",
1176 	"mobile registration req",
1177 	"mobile registration reply",
1178 	"domain name request",		/* RFC 1788 */
1179 	"domain name reply",		/* RFC 1788 */
1180 	"icmp SKIP",
1181 	"icmp photuris",		/* RFC 2521 */
1182 };
1183 
1184 /*
1185  * Dump ICMP statistics.
1186  */
1187 void
1188 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1189 {
1190 	struct icmpstat icmpstat, zerostat;
1191 	int i, first;
1192 	size_t len;
1193 
1194 	len = sizeof icmpstat;
1195 	if (live) {
1196 		if (zflag)
1197 			memset(&zerostat, 0, len);
1198 		if (sysctlbyname("net.inet.icmp.stats", &icmpstat, &len,
1199 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1200 			xo_warn("sysctl: net.inet.icmp.stats");
1201 			return;
1202 		}
1203 	} else
1204 		kread_counters(off, &icmpstat, len);
1205 
1206 	xo_open_container(name);
1207 	xo_emit("{T:/%s}:\n", name);
1208 
1209 #define	p(f, m) if (icmpstat.f || sflag <= 1) \
1210 	xo_emit(m, icmpstat.f, plural(icmpstat.f))
1211 #define	p1a(f, m) if (icmpstat.f || sflag <= 1) \
1212 	xo_emit(m, icmpstat.f)
1213 #define	p2(f, m) if (icmpstat.f || sflag <= 1) \
1214 	xo_emit(m, icmpstat.f, plurales(icmpstat.f))
1215 
1216 	p(icps_error, "\t{:icmp-calls/%lu} "
1217 	    "{N:/call%s to icmp_error}\n");
1218 	p(icps_oldicmp, "\t{:errors-not-from-message/%lu} "
1219 	    "{N:/error%s not generated in response to an icmp message}\n");
1220 
1221 	for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1222 		if (icmpstat.icps_outhist[i] != 0) {
1223 			if (first) {
1224 				xo_open_list("output-histogram");
1225 				xo_emit("\tOutput histogram:\n");
1226 				first = 0;
1227 			}
1228 			xo_open_instance("output-histogram");
1229 			if (icmpnames[i] != NULL)
1230 				xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1231 				    icmpnames[i], icmpstat.icps_outhist[i]);
1232 			else
1233 				xo_emit("\t\tunknown ICMP #{k:name/%d}: "
1234 				    "{:count/%lu}\n",
1235 				    i, icmpstat.icps_outhist[i]);
1236 			xo_close_instance("output-histogram");
1237 		}
1238 	}
1239 	if (!first)
1240 		xo_close_list("output-histogram");
1241 
1242 	p(icps_badcode, "\t{:dropped-bad-code/%lu} "
1243 	    "{N:/message%s with bad code fields}\n");
1244 	p(icps_tooshort, "\t{:dropped-too-short/%lu} "
1245 	    "{N:/message%s less than the minimum length}\n");
1246 	p(icps_checksum, "\t{:dropped-bad-checksum/%lu} "
1247 	    "{N:/message%s with bad checksum}\n");
1248 	p(icps_badlen, "\t{:dropped-bad-length/%lu} "
1249 	    "{N:/message%s with bad length}\n");
1250 	p1a(icps_bmcastecho, "\t{:dropped-multicast-echo/%lu} "
1251 	    "{N:/multicast echo requests ignored}\n");
1252 	p1a(icps_bmcasttstamp, "\t{:dropped-multicast-timestamp/%lu} "
1253 	    "{N:/multicast timestamp requests ignored}\n");
1254 
1255 	for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1256 		if (icmpstat.icps_inhist[i] != 0) {
1257 			if (first) {
1258 				xo_open_list("input-histogram");
1259 				xo_emit("\tInput histogram:\n");
1260 				first = 0;
1261 			}
1262 			xo_open_instance("input-histogram");
1263 			if (icmpnames[i] != NULL)
1264 				xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1265 					icmpnames[i],
1266 					icmpstat.icps_inhist[i]);
1267 			else
1268 				xo_emit(
1269 			"\t\tunknown ICMP #{k:name/%d}: {:count/%lu}\n",
1270 					i, icmpstat.icps_inhist[i]);
1271 			xo_close_instance("input-histogram");
1272 		}
1273 	}
1274 	if (!first)
1275 		xo_close_list("input-histogram");
1276 
1277 	p(icps_reflect, "\t{:sent-packets/%lu} "
1278 	    "{N:/message response%s generated}\n");
1279 	p2(icps_badaddr, "\t{:discard-invalid-return-address/%lu} "
1280 	    "{N:/invalid return address%s}\n");
1281 	p(icps_noroute, "\t{:discard-no-route/%lu} "
1282 	    "{N:/no return route%s}\n");
1283 #undef p
1284 #undef p1a
1285 #undef p2
1286 	if (live) {
1287 		len = sizeof i;
1288 		if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) <
1289 		    0)
1290 			return;
1291 		xo_emit("\tICMP address mask responses are "
1292 		    "{q:icmp-address-responses/%sabled}\n", i ? "en" : "dis");
1293 	}
1294 
1295 	xo_close_container(name);
1296 }
1297 
1298 /*
1299  * Dump IGMP statistics structure.
1300  */
1301 void
1302 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1303 {
1304 	struct igmpstat igmpstat, zerostat;
1305 	size_t len;
1306 
1307 	len = sizeof(igmpstat);
1308 	if (live) {
1309 		if (zflag)
1310 			memset(&zerostat, 0, len);
1311 		if (sysctlbyname("net.inet.igmp.stats", &igmpstat, &len,
1312 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1313 			xo_warn("sysctl: net.inet.igmp.stats");
1314 			return;
1315 		}
1316 	} else {
1317 		len = sizeof(igmpstat);
1318 		kread(off, &igmpstat, len);
1319 	}
1320 
1321 	if (igmpstat.igps_version != IGPS_VERSION_3) {
1322 		xo_warnx("%s: version mismatch (%d != %d)", __func__,
1323 		    igmpstat.igps_version, IGPS_VERSION_3);
1324 	}
1325 	if (igmpstat.igps_len != IGPS_VERSION3_LEN) {
1326 		xo_warnx("%s: size mismatch (%d != %d)", __func__,
1327 		    igmpstat.igps_len, IGPS_VERSION3_LEN);
1328 	}
1329 
1330 	xo_open_container(name);
1331 	xo_emit("{T:/%s}:\n", name);
1332 
1333 #define	p64(f, m) if (igmpstat.f || sflag <= 1) \
1334 	xo_emit(m, (uintmax_t) igmpstat.f, plural(igmpstat.f))
1335 #define	py64(f, m) if (igmpstat.f || sflag <= 1) \
1336 	xo_emit(m, (uintmax_t) igmpstat.f, pluralies(igmpstat.f))
1337 
1338 	p64(igps_rcv_total, "\t{:received-messages/%ju} "
1339 	    "{N:/message%s received}\n");
1340 	p64(igps_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1341 	    "{N:/message%s received with too few bytes}\n");
1342 	p64(igps_rcv_badttl, "\t{:dropped-wrong-ttl/%ju} "
1343 	    "{N:/message%s received with wrong TTL}\n");
1344 	p64(igps_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1345 	    "{N:/message%s received with bad checksum}\n");
1346 	py64(igps_rcv_v1v2_queries, "\t{:received-membership-queries/%ju} "
1347 	    "{N:/V1\\/V2 membership quer%s received}\n");
1348 	py64(igps_rcv_v3_queries, "\t{:received-v3-membership-queries/%ju} "
1349 	    "{N:/V3 membership quer%s received}\n");
1350 	py64(igps_rcv_badqueries, "\t{:dropped-membership-queries/%ju} "
1351 	    "{N:/membership quer%s received with invalid field(s)}\n");
1352 	py64(igps_rcv_gen_queries, "\t{:received-general-queries/%ju} "
1353 	    "{N:/general quer%s received}\n");
1354 	py64(igps_rcv_group_queries, "\t{:received-group-queries/%ju} "
1355 	    "{N:/group quer%s received}\n");
1356 	py64(igps_rcv_gsr_queries, "\t{:received-group-source-queries/%ju} "
1357 	    "{N:/group-source quer%s received}\n");
1358 	py64(igps_drop_gsr_queries, "\t{:dropped-group-source-queries/%ju} "
1359 	    "{N:/group-source quer%s dropped}\n");
1360 	p64(igps_rcv_reports, "\t{:received-membership-requests/%ju} "
1361 	    "{N:/membership report%s received}\n");
1362 	p64(igps_rcv_badreports, "\t{:dropped-membership-reports/%ju} "
1363 	    "{N:/membership report%s received with invalid field(s)}\n");
1364 	p64(igps_rcv_ourreports, "\t"
1365 	    "{:received-membership-reports-matching/%ju} "
1366 	    "{N:/membership report%s received for groups to which we belong}"
1367 	    "\n");
1368 	p64(igps_rcv_nora, "\t{:received-v3-reports-no-router-alert/%ju} "
1369 	    "{N:/V3 report%s received without Router Alert}\n");
1370 	p64(igps_snd_reports, "\t{:sent-membership-reports/%ju} "
1371 	    "{N:/membership report%s sent}\n");
1372 #undef p64
1373 #undef py64
1374 	xo_close_container(name);
1375 }
1376 
1377 /*
1378  * Dump PIM statistics structure.
1379  */
1380 void
1381 pim_stats(u_long off __unused, const char *name, int af1 __unused,
1382     int proto __unused)
1383 {
1384 	struct pimstat pimstat, zerostat;
1385 	size_t len = sizeof pimstat;
1386 
1387 	if (live) {
1388 		if (zflag)
1389 			memset(&zerostat, 0, len);
1390 		if (sysctlbyname("net.inet.pim.stats", &pimstat, &len,
1391 		    zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
1392 			if (errno != ENOENT)
1393 				xo_warn("sysctl: net.inet.pim.stats");
1394 			return;
1395 		}
1396 	} else {
1397 		if (off == 0)
1398 			return;
1399 		kread_counters(off, &pimstat, len);
1400 	}
1401 
1402 	xo_open_container(name);
1403 	xo_emit("{T:/%s}:\n", name);
1404 
1405 #define	p(f, m) if (pimstat.f || sflag <= 1) \
1406 	xo_emit(m, (uintmax_t)pimstat.f, plural(pimstat.f))
1407 #define	py(f, m) if (pimstat.f || sflag <= 1) \
1408 	xo_emit(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y")
1409 
1410 	p(pims_rcv_total_msgs, "\t{:received-messages/%ju} "
1411 	    "{N:/message%s received}\n");
1412 	p(pims_rcv_total_bytes, "\t{:received-bytes/%ju} "
1413 	    "{N:/byte%s received}\n");
1414 	p(pims_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1415 	    "{N:/message%s received with too few bytes}\n");
1416 	p(pims_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1417 	    "{N:/message%s received with bad checksum}\n");
1418 	p(pims_rcv_badversion, "\t{:dropped-bad-version/%ju} "
1419 	    "{N:/message%s received with bad version}\n");
1420 	p(pims_rcv_registers_msgs, "\t{:received-data-register-messages/%ju} "
1421 	    "{N:/data register message%s received}\n");
1422 	p(pims_rcv_registers_bytes, "\t{:received-data-register-bytes/%ju} "
1423 	    "{N:/data register byte%s received}\n");
1424 	p(pims_rcv_registers_wrongiif, "\t"
1425 	    "{:received-data-register-wrong-interface/%ju} "
1426 	    "{N:/data register message%s received on wrong iif}\n");
1427 	p(pims_rcv_badregisters, "\t{:received-bad-registers/%ju} "
1428 	    "{N:/bad register%s received}\n");
1429 	p(pims_snd_registers_msgs, "\t{:sent-data-register-messages/%ju} "
1430 	    "{N:/data register message%s sent}\n");
1431 	p(pims_snd_registers_bytes, "\t{:sent-data-register-bytes/%ju} "
1432 	    "{N:/data register byte%s sent}\n");
1433 #undef p
1434 #undef py
1435 	xo_close_container(name);
1436 }
1437 
1438 /*
1439  * Pretty print an Internet address (net address + port).
1440  */
1441 void
1442 inetprint(const char *container, struct in_addr *in, int port,
1443     const char *proto, int num_port)
1444 {
1445 	struct servent *sp = 0;
1446 	char line[80], *cp;
1447 	int width;
1448 
1449 	if (container)
1450 		xo_open_container(container);
1451 
1452 	if (Wflag)
1453 	    sprintf(line, "%s.", inetname(in));
1454 	else
1455 	    sprintf(line, "%.*s.", (Aflag && !num_port) ? 12 : 16, inetname(in));
1456 	cp = strchr(line, '\0');
1457 	if (!num_port && port)
1458 		sp = getservbyport((int)port, proto);
1459 	if (sp || port == 0)
1460 		sprintf(cp, "%.15s ", sp ? sp->s_name : "*");
1461 	else
1462 		sprintf(cp, "%d ", ntohs((u_short)port));
1463 	width = (Aflag && !Wflag) ? 18 : 22;
1464 	if (Wflag)
1465 		xo_emit("{d:target/%-*s} ", width, line);
1466 	else
1467 		xo_emit("{d:target/%-*.*s} ", width, width, line);
1468 
1469 	int alen = cp - line - 1, plen = strlen(cp) - 1;
1470 	xo_emit("{e:address/%*.*s}{e:port/%*.*s}", alen, alen, line, plen,
1471 	    plen, cp);
1472 
1473 	if (container)
1474 		xo_close_container(container);
1475 }
1476 
1477 /*
1478  * Construct an Internet address representation.
1479  * If numeric_addr has been supplied, give
1480  * numeric value, otherwise try for symbolic name.
1481  */
1482 char *
1483 inetname(struct in_addr *inp)
1484 {
1485 	char *cp;
1486 	static char line[MAXHOSTNAMELEN];
1487 	struct hostent *hp;
1488 	struct netent *np;
1489 
1490 	cp = 0;
1491 	if (!numeric_addr && inp->s_addr != INADDR_ANY) {
1492 		int net = inet_netof(*inp);
1493 		int lna = inet_lnaof(*inp);
1494 
1495 		if (lna == INADDR_ANY) {
1496 			np = getnetbyaddr(net, AF_INET);
1497 			if (np)
1498 				cp = np->n_name;
1499 		}
1500 		if (cp == 0) {
1501 			hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
1502 			if (hp) {
1503 				cp = hp->h_name;
1504 				trimdomain(cp, strlen(cp));
1505 			}
1506 		}
1507 	}
1508 	if (inp->s_addr == INADDR_ANY)
1509 		strcpy(line, "*");
1510 	else if (cp) {
1511 		strlcpy(line, cp, sizeof(line));
1512 	} else {
1513 		inp->s_addr = ntohl(inp->s_addr);
1514 #define	C(x)	((u_int)((x) & 0xff))
1515 		sprintf(line, "%u.%u.%u.%u", C(inp->s_addr >> 24),
1516 		    C(inp->s_addr >> 16), C(inp->s_addr >> 8), C(inp->s_addr));
1517 	}
1518 	return (line);
1519 }
1520