xref: /freebsd/usr.bin/netstat/inet.c (revision 99429157e8615dc3b7f11afbe3ed92de7476a5db)
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  * 3. 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/udp.h>
70 #include <netinet/udp_var.h>
71 
72 #include <arpa/inet.h>
73 #include <err.h>
74 #include <errno.h>
75 #include <libutil.h>
76 #include <netdb.h>
77 #include <stdint.h>
78 #include <stdio.h>
79 #include <stdlib.h>
80 #include <stdbool.h>
81 #include <string.h>
82 #include <unistd.h>
83 #include <libxo/xo.h>
84 #include "netstat.h"
85 #include "nl_defs.h"
86 
87 void	inetprint(const char *, struct in_addr *, int, const char *, int,
88     const 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)
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)) == NULL) {
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 /*
185  * Print a summary of connections related to an Internet
186  * protocol.  For TCP, also give state of connection.
187  * Listening processes (aflag) are suppressed unless the
188  * -a (all) flag is specified.
189  */
190 void
191 protopr(u_long off, const char *name, int af1, int proto)
192 {
193 	static int first = 1;
194 	int istcp;
195 	char *buf;
196 	const char *vchar;
197 	struct xtcpcb *tp;
198 	struct xinpcb *inp;
199 	struct xinpgen *xig, *oxig;
200 	struct xsocket *so;
201 
202 	istcp = 0;
203 	switch (proto) {
204 	case IPPROTO_TCP:
205 #ifdef INET6
206 		if (strncmp(name, "sdp", 3) != 0) {
207 			if (tcp_done != 0)
208 				return;
209 			else
210 				tcp_done = 1;
211 		} else {
212 			if (sdp_done != 0)
213 				return;
214 			else
215 				sdp_done = 1;
216 		}
217 #endif
218 		istcp = 1;
219 		break;
220 	case IPPROTO_UDP:
221 #ifdef INET6
222 		if (udp_done != 0)
223 			return;
224 		else
225 			udp_done = 1;
226 #endif
227 		break;
228 	}
229 
230 	if (!pcblist_sysctl(proto, name, &buf))
231 		return;
232 
233 	oxig = xig = (struct xinpgen *)buf;
234 	for (xig = (struct xinpgen *)((char *)xig + xig->xig_len);
235 	    xig->xig_len > sizeof(struct xinpgen);
236 	    xig = (struct xinpgen *)((char *)xig + xig->xig_len)) {
237 		if (istcp) {
238 			tp = (struct xtcpcb *)xig;
239 			inp = &tp->xt_inp;
240 		} else {
241 			inp = (struct xinpcb *)xig;
242 		}
243 		so = &inp->xi_socket;
244 
245 		/* Ignore sockets for protocols other than the desired one. */
246 		if (so->xso_protocol != proto)
247 			continue;
248 
249 		/* Ignore PCBs which were freed during copyout. */
250 		if (inp->inp_gencnt > oxig->xig_gen)
251 			continue;
252 
253 		if ((af1 == AF_INET && (inp->inp_vflag & INP_IPV4) == 0)
254 #ifdef INET6
255 		    || (af1 == AF_INET6 && (inp->inp_vflag & INP_IPV6) == 0)
256 #endif /* INET6 */
257 		    || (af1 == AF_UNSPEC && ((inp->inp_vflag & INP_IPV4) == 0
258 #ifdef INET6
259 					  && (inp->inp_vflag & INP_IPV6) == 0
260 #endif /* INET6 */
261 			))
262 		    )
263 			continue;
264 		if (!aflag &&
265 		    (
266 		     (istcp && tp->t_state == TCPS_LISTEN)
267 		     || (af1 == AF_INET &&
268 		      inet_lnaof(inp->inp_laddr) == INADDR_ANY)
269 #ifdef INET6
270 		     || (af1 == AF_INET6 &&
271 			 IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
272 #endif /* INET6 */
273 		     || (af1 == AF_UNSPEC &&
274 			 (((inp->inp_vflag & INP_IPV4) != 0 &&
275 			   inet_lnaof(inp->inp_laddr) == INADDR_ANY)
276 #ifdef INET6
277 			  || ((inp->inp_vflag & INP_IPV6) != 0 &&
278 			      IN6_IS_ADDR_UNSPECIFIED(&inp->in6p_laddr))
279 #endif
280 			  ))
281 		     ))
282 			continue;
283 
284 		if (first) {
285 			if (!Lflag) {
286 				xo_emit("Active Internet connections");
287 				if (aflag)
288 					xo_emit(" (including servers)");
289 			} else
290 				xo_emit(
291 	"Current listen queue sizes (qlen/incqlen/maxqlen)");
292 			xo_emit("\n");
293 			if (Aflag)
294 				xo_emit("{T:/%-*s} ", 2 * (int)sizeof(void *),
295 				    "Tcpcb");
296 			if (Lflag)
297 				xo_emit((Aflag && !Wflag) ?
298 				    "{T:/%-5.5s} {T:/%-32.32s} {T:/%-18.18s}" :
299 				    ((!Wflag || af1 == AF_INET) ?
300 				    "{T:/%-5.5s} {T:/%-32.32s} {T:/%-22.22s}" :
301 				    "{T:/%-5.5s} {T:/%-32.32s} {T:/%-45.45s}"),
302 				    "Proto", "Listen", "Local Address");
303 			else if (Tflag)
304 				xo_emit((Aflag && !Wflag) ?
305     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%s}" :
306 				    ((!Wflag || af1 == AF_INET) ?
307     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%s}" :
308     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-45.45s} {T:/%s}"),
309 				    "Proto", "Rexmit", "OOORcv", "0-win",
310 				    "Local Address", "Foreign Address");
311 			else {
312 				xo_emit((Aflag && !Wflag) ?
313     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-18.18s} {T:/%-18.18s}" :
314 				    ((!Wflag || af1 == AF_INET) ?
315     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-22.22s} {T:/%-22.22s}" :
316     "{T:/%-5.5s} {T:/%-6.6s} {T:/%-6.6s} {T:/%-45.45s} {T:/%-45.45s}"),
317 				    "Proto", "Recv-Q", "Send-Q",
318 				    "Local Address", "Foreign Address");
319 				if (!xflag && !Rflag)
320 					xo_emit(" (state)");
321 			}
322 			if (xflag) {
323 				xo_emit(" {T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
324 				    "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
325 				    "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s} "
326 				    "{T:/%-6.6s} {T:/%-6.6s} {T:/%-6.6s}",
327 				    "R-MBUF", "S-MBUF", "R-CLUS", "S-CLUS",
328 				    "R-HIWA", "S-HIWA", "R-LOWA", "S-LOWA",
329 				    "R-BCNT", "S-BCNT", "R-BMAX", "S-BMAX");
330 				xo_emit(" {T:/%7.7s} {T:/%7.7s} {T:/%7.7s} "
331 				    "{T:/%7.7s} {T:/%7.7s} {T:/%7.7s}",
332 				    "rexmt", "persist", "keep", "2msl",
333 				    "delack", "rcvtime");
334 			} else if (Rflag) {
335 				xo_emit("  {T:/%8.8s} {T:/%5.5s}",
336 				    "flowid", "ftype");
337 			}
338 			xo_emit("\n");
339 			first = 0;
340 		}
341 		if (Lflag && so->so_qlimit == 0)
342 			continue;
343 		xo_open_instance("socket");
344 		if (Aflag) {
345 			if (istcp)
346 				xo_emit("{q:address/%*lx} ",
347 				    2 * (int)sizeof(void *),
348 				    (u_long)inp->inp_ppcb);
349 			else
350 				xo_emit("{q:address/%*lx} ",
351 				    2 * (int)sizeof(void *),
352 				    (u_long)so->so_pcb);
353 		}
354 #ifdef INET6
355 		if ((inp->inp_vflag & INP_IPV6) != 0)
356 			vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
357 			    "46" : "6";
358 		else
359 #endif
360 		vchar = ((inp->inp_vflag & INP_IPV4) != 0) ?
361 		    "4" : "";
362 		if (istcp && (tp->t_flags & TF_TOE) != 0)
363 			xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", "toe", vchar);
364 		else
365 			xo_emit("{:protocol/%-3.3s%-2.2s/%s%s} ", name, vchar);
366 		if (Lflag) {
367 			char buf1[33];
368 
369 			snprintf(buf1, sizeof buf1, "%u/%u/%u", so->so_qlen,
370 			    so->so_incqlen, so->so_qlimit);
371 			xo_emit("{:listen-queue-sizes/%-32.32s} ", buf1);
372 		} else if (Tflag) {
373 			if (istcp)
374 				xo_emit("{:sent-retransmit-packets/%6u} "
375 				    "{:received-out-of-order-packets/%6u} "
376 				    "{:sent-zero-window/%6u} ",
377 				    tp->t_sndrexmitpack, tp->t_rcvoopack,
378 				    tp->t_sndzerowin);
379 			else
380 				xo_emit("{P:/%21s}", "");
381 		} else {
382 			xo_emit("{:receive-bytes-waiting/%6u} "
383 			    "{:send-bytes-waiting/%6u} ",
384 			    so->so_rcv.sb_cc, so->so_snd.sb_cc);
385 		}
386 		if (numeric_port) {
387 			if (inp->inp_vflag & INP_IPV4) {
388 				inetprint("local", &inp->inp_laddr,
389 				    (int)inp->inp_lport, name, 1, af1);
390 				if (!Lflag)
391 					inetprint("remote", &inp->inp_faddr,
392 					    (int)inp->inp_fport, name, 1, af1);
393 			}
394 #ifdef INET6
395 			else if (inp->inp_vflag & INP_IPV6) {
396 				inet6print("local", &inp->in6p_laddr,
397 				    (int)inp->inp_lport, name, 1);
398 				if (!Lflag)
399 					inet6print("remote", &inp->in6p_faddr,
400 					    (int)inp->inp_fport, name, 1);
401 			} /* else nothing printed now */
402 #endif /* INET6 */
403 		} else if (inp->inp_flags & INP_ANONPORT) {
404 			if (inp->inp_vflag & INP_IPV4) {
405 				inetprint("local", &inp->inp_laddr,
406 				    (int)inp->inp_lport, name, 1, af1);
407 				if (!Lflag)
408 					inetprint("remote", &inp->inp_faddr,
409 					    (int)inp->inp_fport, name, 0, af1);
410 			}
411 #ifdef INET6
412 			else if (inp->inp_vflag & INP_IPV6) {
413 				inet6print("local", &inp->in6p_laddr,
414 				    (int)inp->inp_lport, name, 1);
415 				if (!Lflag)
416 					inet6print("remote", &inp->in6p_faddr,
417 					    (int)inp->inp_fport, name, 0);
418 			} /* else nothing printed now */
419 #endif /* INET6 */
420 		} else {
421 			if (inp->inp_vflag & INP_IPV4) {
422 				inetprint("local", &inp->inp_laddr,
423 				    (int)inp->inp_lport, name, 0, af1);
424 				if (!Lflag)
425 					inetprint("remote", &inp->inp_faddr,
426 					    (int)inp->inp_fport, name,
427 					    inp->inp_lport != inp->inp_fport,
428 					    af1);
429 			}
430 #ifdef INET6
431 			else if (inp->inp_vflag & INP_IPV6) {
432 				inet6print("local", &inp->in6p_laddr,
433 				    (int)inp->inp_lport, name, 0);
434 				if (!Lflag)
435 					inet6print("remote", &inp->in6p_faddr,
436 					    (int)inp->inp_fport, name,
437 					    inp->inp_lport != inp->inp_fport);
438 			} /* else nothing printed now */
439 #endif /* INET6 */
440 		}
441 		if (xflag) {
442 			xo_emit("{:receive-mbufs/%6u} {:send-mbufs/%6u} "
443 			    "{:receive-clusters/%6u} {:send-clusters/%6u} "
444 			    "{:receive-high-water/%6u} {:send-high-water/%6u} "
445 			    "{:receive-low-water/%6u} {:send-low-water/%6u} "
446 			    "{:receive-mbuf-bytes/%6u} {:send-mbuf-bytes/%6u} "
447 			    "{:receive-mbuf-bytes-max/%6u} "
448 			    "{:send-mbuf-bytes-max/%6u}",
449 			    so->so_rcv.sb_mcnt, so->so_snd.sb_mcnt,
450 			    so->so_rcv.sb_ccnt, so->so_snd.sb_ccnt,
451 			    so->so_rcv.sb_hiwat, so->so_snd.sb_hiwat,
452 			    so->so_rcv.sb_lowat, so->so_snd.sb_lowat,
453 			    so->so_rcv.sb_mbcnt, so->so_snd.sb_mbcnt,
454 			    so->so_rcv.sb_mbmax, so->so_snd.sb_mbmax);
455 			if (istcp)
456 				xo_emit(" {:retransmit-timer/%4d.%02d} "
457 				    "{:persist-timer/%4d.%02d} "
458 				    "{:keepalive-timer/%4d.%02d} "
459 				    "{:msl2-timer/%4d.%02d} "
460 				    "{:delay-ack-timer/%4d.%02d} "
461 				    "{:inactivity-timer/%4d.%02d}",
462 				    tp->tt_rexmt / 1000,
463 				    (tp->tt_rexmt % 1000) / 10,
464 				    tp->tt_persist / 1000,
465 				    (tp->tt_persist % 1000) / 10,
466 				    tp->tt_keep / 1000,
467 				    (tp->tt_keep % 1000) / 10,
468 				    tp->tt_2msl / 1000,
469 				    (tp->tt_2msl % 1000) / 10,
470 				    tp->tt_delack / 1000,
471 				    (tp->tt_delack % 1000) / 10,
472 				    tp->t_rcvtime / 1000,
473 				    (tp->t_rcvtime % 1000) / 10);
474 		}
475 		if (istcp && !Lflag && !xflag && !Tflag && !Rflag) {
476 			if (tp->t_state < 0 || tp->t_state >= TCP_NSTATES)
477 				xo_emit("{:tcp-state/%d}", tp->t_state);
478 			else {
479 				xo_emit("{:tcp-state/%s}",
480 				    tcpstates[tp->t_state]);
481 #if defined(TF_NEEDSYN) && defined(TF_NEEDFIN)
482 				/* Show T/TCP `hidden state' */
483 				if (tp->t_flags & (TF_NEEDSYN|TF_NEEDFIN))
484 					xo_emit("{:need-syn-or-fin/*}");
485 #endif /* defined(TF_NEEDSYN) && defined(TF_NEEDFIN) */
486 			}
487 		}
488 		if (Rflag) {
489 			/* XXX: is this right Alfred */
490 			xo_emit(" {:flow-id/%08x} {:flow-type/%5d}",
491 			    inp->inp_flowid,
492 			    inp->inp_flowtype);
493 		}
494 		xo_emit("\n");
495 		xo_close_instance("socket");
496 	}
497 	if (xig != oxig && xig->xig_gen != oxig->xig_gen) {
498 		if (oxig->xig_count > xig->xig_count) {
499 			xo_emit("Some {d:lost/%s} sockets may have been "
500 			    "deleted.\n", name);
501 		} else if (oxig->xig_count < xig->xig_count) {
502 			xo_emit("Some {d:created/%s} sockets may have been "
503 			    "created.\n", name);
504 		} else {
505 			xo_emit("Some {d:changed/%s} sockets may have been "
506 			    "created or deleted.\n", name);
507 		}
508 	}
509 	free(buf);
510 }
511 
512 /*
513  * Dump TCP statistics structure.
514  */
515 void
516 tcp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
517 {
518 	struct tcpstat tcpstat;
519 	uint64_t tcps_states[TCP_NSTATES];
520 
521 #ifdef INET6
522 	if (tcp_done != 0)
523 		return;
524 	else
525 		tcp_done = 1;
526 #endif
527 
528 	if (fetch_stats("net.inet.tcp.stats", off, &tcpstat,
529 	    sizeof(tcpstat), kread_counters) != 0)
530 		return;
531 
532 	if (fetch_stats_ro("net.inet.tcp.states", nl[N_TCPS_STATES].n_value,
533 	    &tcps_states, sizeof(tcps_states), kread_counters) != 0)
534 		return;
535 
536 	xo_open_container("tcp");
537 	xo_emit("{T:/%s}:\n", name);
538 
539 #define	p(f, m) if (tcpstat.f || sflag <= 1)				\
540 	xo_emit(m, (uintmax_t )tcpstat.f, plural(tcpstat.f))
541 #define	p1a(f, m) if (tcpstat.f || sflag <= 1)				\
542 	xo_emit(m, (uintmax_t )tcpstat.f)
543 #define	p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)	\
544 	xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),		\
545 	    (uintmax_t )tcpstat.f2, plural(tcpstat.f2))
546 #define	p2a(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1)	\
547 	xo_emit(m, (uintmax_t )tcpstat.f1, plural(tcpstat.f1),		\
548 	    (uintmax_t )tcpstat.f2)
549 #define	p3(f, m) if (tcpstat.f || sflag <= 1)				\
550 	xo_emit(m, (uintmax_t )tcpstat.f, pluralies(tcpstat.f))
551 
552 	p(tcps_sndtotal, "\t{:sent-packets/%ju} {N:/packet%s sent}\n");
553 	p2(tcps_sndpack,tcps_sndbyte, "\t\t{:sent-data-packets/%ju} "
554 	    "{N:/data packet%s} ({:sent-data-bytes/%ju} {N:/byte%s})\n");
555 	p2(tcps_sndrexmitpack, tcps_sndrexmitbyte, "\t\t"
556 	    "{:sent-retransmitted-packets/%ju} {N:/data packet%s} "
557 	    "({:sent-retransmitted-bytes/%ju} {N:/byte%s}) "
558 	    "{N:retransmitted}\n");
559 	p(tcps_sndrexmitbad, "\t\t"
560 	    "{:sent-unnecessary-retransmitted-packets/%ju} "
561 	    "{N:/data packet%s unnecessarily retransmitted}\n");
562 	p(tcps_mturesent, "\t\t{:sent-resends-by-mtu-discovery/%ju} "
563 	    "{N:/resend%s initiated by MTU discovery}\n");
564 	p2a(tcps_sndacks, tcps_delack, "\t\t{:sent-ack-only-packets/%ju} "
565 	    "{N:/ack-only packet%s/} ({:sent-packets-delayed/%ju} "
566 	    "{N:delayed})\n");
567 	p(tcps_sndurg, "\t\t{:sent-urg-only-packets/%ju} "
568 	    "{N:/URG only packet%s}\n");
569 	p(tcps_sndprobe, "\t\t{:sent-window-probe-packets/%ju} "
570 	    "{N:/window probe packet%s}\n");
571 	p(tcps_sndwinup, "\t\t{:sent-window-update-packets/%ju} "
572 	    "{N:/window update packet%s}\n");
573 	p(tcps_sndctrl, "\t\t{:sent-control-packets/%ju} "
574 	    "{N:/control packet%s}\n");
575 	p(tcps_rcvtotal, "\t{:received-packets/%ju} "
576 	    "{N:/packet%s received}\n");
577 	p2(tcps_rcvackpack, tcps_rcvackbyte, "\t\t"
578 	    "{:received-ack-packets/%ju} {N:/ack%s} "
579 	    "{N:(for} {:received-ack-bytes/%ju} {N:/byte%s})\n");
580 	p(tcps_rcvdupack, "\t\t{:received-duplicate-acks/%ju} "
581 	    "{N:/duplicate ack%s}\n");
582 	p(tcps_rcvacktoomuch, "\t\t{:received-acks-for-unsent-data/%ju} "
583 	    "{N:/ack%s for unsent data}\n");
584 	p2(tcps_rcvpack, tcps_rcvbyte, "\t\t"
585 	    "{:received-in-sequence-packets/%ju} {N:/packet%s} "
586 	    "({:received-in-sequence-bytes/%ju} {N:/byte%s}) "
587 	    "{N:received in-sequence}\n");
588 	p2(tcps_rcvduppack, tcps_rcvdupbyte, "\t\t"
589 	    "{:received-completely-duplicate-packets/%ju} "
590 	    "{N:/completely duplicate packet%s} "
591 	    "({:received-completely-duplicate-bytes/%ju} {N:/byte%s})\n");
592 	p(tcps_pawsdrop, "\t\t{:received-old-duplicate-packets/%ju} "
593 	    "{N:/old duplicate packet%s}\n");
594 	p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte, "\t\t"
595 	    "{:received-some-duplicate-packets/%ju} "
596 	    "{N:/packet%s with some dup. data} "
597 	    "({:received-some-duplicate-bytes/%ju} {N:/byte%s duped/})\n");
598 	p2(tcps_rcvoopack, tcps_rcvoobyte, "\t\t{:received-out-of-order/%ju} "
599 	    "{N:/out-of-order packet%s} "
600 	    "({:received-out-of-order-bytes/%ju} {N:/byte%s})\n");
601 	p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin, "\t\t"
602 	    "{:received-after-window-packets/%ju} {N:/packet%s} "
603 	    "({:received-after-window-bytes/%ju} {N:/byte%s}) "
604 	    "{N:of data after window}\n");
605 	p(tcps_rcvwinprobe, "\t\t{:received-window-probes/%ju} "
606 	    "{N:/window probe%s}\n");
607 	p(tcps_rcvwinupd, "\t\t{:receive-window-update-packets/%ju} "
608 	    "{N:/window update packet%s}\n");
609 	p(tcps_rcvafterclose, "\t\t{:received-after-close-packets/%ju} "
610 	    "{N:/packet%s received after close}\n");
611 	p(tcps_rcvbadsum, "\t\t{:discard-bad-checksum/%ju} "
612 	    "{N:/discarded for bad checksum%s}\n");
613 	p(tcps_rcvbadoff, "\t\t{:discard-bad-header-offset/%ju} "
614 	    "{N:/discarded for bad header offset field%s}\n");
615 	p1a(tcps_rcvshort, "\t\t{:discard-too-short/%ju} "
616 	    "{N:discarded because packet too short}\n");
617 	p1a(tcps_rcvmemdrop, "\t\t{:discard-memory-problems/%ju} "
618 	    "{N:discarded due to memory problems}\n");
619 	p(tcps_connattempt, "\t{:connection-requests/%ju} "
620 	    "{N:/connection request%s}\n");
621 	p(tcps_accepts, "\t{:connections-accepts/%ju} "
622 	    "{N:/connection accept%s}\n");
623 	p(tcps_badsyn, "\t{:bad-connection-attempts/%ju} "
624 	    "{N:/bad connection attempt%s}\n");
625 	p(tcps_listendrop, "\t{:listen-queue-overflows/%ju} "
626 	    "{N:/listen queue overflow%s}\n");
627 	p(tcps_badrst, "\t{:ignored-in-window-resets/%ju} "
628 	    "{N:/ignored RSTs in the window%s}\n");
629 	p(tcps_connects, "\t{:connections-established/%ju} "
630 	    "{N:/connection%s established (including accepts)}\n");
631 	p(tcps_usedrtt, "\t\t{:connections-hostcache-rtt/%ju} "
632 	    "{N:/time%s used RTT from hostcache}\n");
633 	p(tcps_usedrttvar, "\t\t{:connections-hostcache-rttvar/%ju} "
634 	    "{N:/time%s used RTT variance from hostcache}\n");
635 	p(tcps_usedssthresh, "\t\t{:connections-hostcache-ssthresh/%ju} "
636 	    "{N:/time%s used slow-start threshold from hostcache}\n");
637 	p2(tcps_closed, tcps_drops, "\t{:connections-closed/%ju} "
638 	    "{N:/connection%s closed (including} "
639 	    "{:connection-drops/%ju} {N:/drop%s})\n");
640 	p(tcps_cachedrtt, "\t\t{:connections-updated-rtt-on-close/%ju} "
641 	    "{N:/connection%s updated cached RTT on close}\n");
642 	p(tcps_cachedrttvar, "\t\t"
643 	    "{:connections-updated-variance-on-close/%ju} "
644 	    "{N:/connection%s updated cached RTT variance on close}\n");
645 	p(tcps_cachedssthresh, "\t\t"
646 	    "{:connections-updated-ssthresh-on-close/%ju} "
647 	    "{N:/connection%s updated cached ssthresh on close}\n");
648 	p(tcps_conndrops, "\t{:embryonic-connections-dropped/%ju} "
649 	    "{N:/embryonic connection%s dropped}\n");
650 	p2(tcps_rttupdated, tcps_segstimed, "\t{:segments-updated-rtt/%ju} "
651 	    "{N:/segment%s updated rtt (of} "
652 	    "{:segment-update-attempts/%ju} {N:/attempt%s})\n");
653 	p(tcps_rexmttimeo, "\t{:retransmit-timeouts/%ju} "
654 	    "{N:/retransmit timeout%s}\n");
655 	p(tcps_timeoutdrop, "\t\t"
656 	    "{:connections-dropped-by-retransmit-timeout/%ju} "
657 	    "{N:/connection%s dropped by rexmit timeout}\n");
658 	p(tcps_persisttimeo, "\t{:persist-timeout/%ju} "
659 	    "{N:/persist timeout%s}\n");
660 	p(tcps_persistdrop, "\t\t"
661 	    "{:connections-dropped-by-persist-timeout/%ju} "
662 	    "{N:/connection%s dropped by persist timeout}\n");
663 	p(tcps_finwait2_drops, "\t"
664 	    "{:connections-dropped-by-finwait2-timeout/%ju} "
665 	    "{N:/Connection%s (fin_wait_2) dropped because of timeout}\n");
666 	p(tcps_keeptimeo, "\t{:keepalive-timeout/%ju} "
667 	    "{N:/keepalive timeout%s}\n");
668 	p(tcps_keepprobe, "\t\t{:keepalive-probes/%ju} "
669 	    "{N:/keepalive probe%s sent}\n");
670 	p(tcps_keepdrops, "\t\t{:connections-dropped-by-keepalives/%ju} "
671 	    "{N:/connection%s dropped by keepalive}\n");
672 	p(tcps_predack, "\t{:ack-header-predictions/%ju} "
673 	    "{N:/correct ACK header prediction%s}\n");
674 	p(tcps_preddat, "\t{:data-packet-header-predictions/%ju} "
675 	    "{N:/correct data packet header prediction%s}\n");
676 
677 	xo_open_container("syncache");
678 
679 	p3(tcps_sc_added, "\t{:entries-added/%ju} "
680 	    "{N:/syncache entr%s added}\n");
681 	p1a(tcps_sc_retransmitted, "\t\t{:retransmitted/%ju} "
682 	    "{N:/retransmitted}\n");
683 	p1a(tcps_sc_dupsyn, "\t\t{:duplicates/%ju} {N:/dupsyn}\n");
684 	p1a(tcps_sc_dropped, "\t\t{:dropped/%ju} {N:/dropped}\n");
685 	p1a(tcps_sc_completed, "\t\t{:completed/%ju} {N:/completed}\n");
686 	p1a(tcps_sc_bucketoverflow, "\t\t{:bucket-overflow/%ju} "
687 	    "{N:/bucket overflow}\n");
688 	p1a(tcps_sc_cacheoverflow, "\t\t{:cache-overflow/%ju} "
689 	    "{N:/cache overflow}\n");
690 	p1a(tcps_sc_reset, "\t\t{:reset/%ju} {N:/reset}\n");
691 	p1a(tcps_sc_stale, "\t\t{:stale/%ju} {N:/stale}\n");
692 	p1a(tcps_sc_aborted, "\t\t{:aborted/%ju} {N:/aborted}\n");
693 	p1a(tcps_sc_badack, "\t\t{:bad-ack/%ju} {N:/badack}\n");
694 	p1a(tcps_sc_unreach, "\t\t{:unreachable/%ju} {N:/unreach}\n");
695 	p(tcps_sc_zonefail, "\t\t{:zone-failures/%ju} {N:/zone failure%s}\n");
696 	p(tcps_sc_sendcookie, "\t{:sent-cookies/%ju} {N:/cookie%s sent}\n");
697 	p(tcps_sc_recvcookie, "\t{:receivd-cookies/%ju} "
698 	    "{N:/cookie%s received}\n");
699 
700 	xo_close_container("syncache");
701 
702 	xo_open_container("hostcache");
703 
704 	p3(tcps_hc_added, "\t{:entries-added/%ju} "
705 	    "{N:/hostcache entr%s added}\n");
706 	p1a(tcps_hc_bucketoverflow, "\t\t{:buffer-overflows/%ju} "
707 	    "{N:/bucket overflow}\n");
708 
709 	xo_close_container("hostcache");
710 
711 	xo_open_container("sack");
712 
713 	p(tcps_sack_recovery_episode, "\t{:recovery-episodes/%ju} "
714 	    "{N:/SACK recovery episode%s}\n");
715  	p(tcps_sack_rexmits, "\t{:segment-retransmits/%ju} "
716 	    "{N:/segment rexmit%s in SACK recovery episodes}\n");
717  	p(tcps_sack_rexmit_bytes, "\t{:byte-retransmits/%ju} "
718 	    "{N:/byte rexmit%s in SACK recovery episodes}\n");
719  	p(tcps_sack_rcv_blocks, "\t{:received-blocks/%ju} "
720 	    "{N:/SACK option%s (SACK blocks) received}\n");
721 	p(tcps_sack_send_blocks, "\t{:sent-option-blocks/%ju} "
722 	    "{N:/SACK option%s (SACK blocks) sent}\n");
723 	p1a(tcps_sack_sboverflow, "\t{:scoreboard-overflows/%ju} "
724 	    "{N:/SACK scoreboard overflow}\n");
725 
726 	xo_close_container("sack");
727 	xo_open_container("ecn");
728 
729 	p(tcps_ecn_ce, "\t{:ce-packets/%ju} "
730 	    "{N:/packet%s with ECN CE bit set}\n");
731 	p(tcps_ecn_ect0, "\t{:ect0-packets/%ju} "
732 	    "{N:/packet%s with ECN ECT(0) bit set}\n");
733 	p(tcps_ecn_ect1, "\t{:ect1-packets/%ju} "
734 	    "{N:/packet%s with ECN ECT(1) bit set}\n");
735 	p(tcps_ecn_shs, "\t{:handshakes/%ju} "
736 	    "{N:/successful ECN handshake%s}\n");
737 	p(tcps_ecn_rcwnd, "\t{:congestion-reductions/%ju} "
738 	    "{N:/time%s ECN reduced the congestion window}\n");
739 
740 	xo_close_container("ecn");
741 	xo_open_container("tcp-signature");
742 	p(tcps_sig_rcvgoodsig, "\t{:received-good-signature/%ju} "
743 	    "{N:/packet%s with matching signature received}\n");
744 	p(tcps_sig_rcvbadsig, "\t{:received-bad-signature/%ju} "
745 	    "{N:/packet%s with bad signature received}\n");
746 	p(tcps_sig_err_buildsig, "\t{:failed-make-signature/%ju} "
747 	    "{N:/time%s failed to make signature due to no SA}\n");
748 	p(tcps_sig_err_sigopt, "\t{:no-signature-expected/%ju} "
749 	    "{N:/time%s unexpected signature received}\n");
750 	p(tcps_sig_err_nosigopt, "\t{:no-signature-provided/%ju} "
751 	    "{N:/time%s no signature provided by segment}\n");
752  #undef p
753  #undef p1a
754  #undef p2
755  #undef p2a
756  #undef p3
757 	xo_close_container("tcp-signature");
758 
759 	xo_open_container("TCP connection count by state");
760 	xo_emit("{T:/TCP connection count by state}:\n");
761 	for (int i = 0; i < TCP_NSTATES; i++) {
762 		/*
763 		 * XXXGL: is there a way in libxo to use %s
764 		 * in the "content string" of a format
765 		 * string? I failed to do that, that's why
766 		 * a temporary buffer is used to construct
767 		 * format string for xo_emit().
768 		 */
769 		char fmtbuf[80];
770 
771 		if (sflag > 1 && tcps_states[i] == 0)
772 			continue;
773 		snprintf(fmtbuf, sizeof(fmtbuf), "\t{:%s/%%ju} "
774                     "{Np:/connection ,connections} in %s state\n",
775 		    tcpstates[i], tcpstates[i]);
776 		xo_emit(fmtbuf, (uintmax_t )tcps_states[i]);
777 	}
778 	xo_close_container("TCP connection count by state");
779 
780 	xo_close_container("tcp");
781 }
782 
783 /*
784  * Dump UDP statistics structure.
785  */
786 void
787 udp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
788 {
789 	struct udpstat udpstat;
790 	uint64_t delivered;
791 
792 #ifdef INET6
793 	if (udp_done != 0)
794 		return;
795 	else
796 		udp_done = 1;
797 #endif
798 
799 	if (fetch_stats("net.inet.udp.stats", off, &udpstat,
800 	    sizeof(udpstat), kread_counters) != 0)
801 		return;
802 
803 	xo_open_container("udp");
804 	xo_emit("{T:/%s}:\n", name);
805 
806 #define	p(f, m) if (udpstat.f || sflag <= 1) \
807 	xo_emit("\t" m, (uintmax_t)udpstat.f, plural(udpstat.f))
808 #define	p1a(f, m) if (udpstat.f || sflag <= 1) \
809 	xo_emit("\t" m, (uintmax_t)udpstat.f)
810 
811 	p(udps_ipackets, "{:received-datagrams/%ju} "
812 	    "{N:/datagram%s received}\n");
813 	p1a(udps_hdrops, "{:dropped-incomplete-headers/%ju} "
814 	    "{N:/with incomplete header}\n");
815 	p1a(udps_badlen, "{:dropped-bad-data-length/%ju} "
816 	    "{N:/with bad data length field}\n");
817 	p1a(udps_badsum, "{:dropped-bad-checksum/%ju} "
818 	    "{N:/with bad checksum}\n");
819 	p1a(udps_nosum, "{:dropped-no-checksum/%ju} "
820 	    "{N:/with no checksum}\n");
821 	p1a(udps_noport, "{:dropped-no-socket/%ju} "
822 	    "{N:/dropped due to no socket}\n");
823 	p(udps_noportbcast, "{:dropped-broadcast-multicast/%ju} "
824 	    "{N:/broadcast\\/multicast datagram%s undelivered}\n");
825 	p1a(udps_fullsock, "{:dropped-full-socket-buffer/%ju} "
826 	    "{N:/dropped due to full socket buffers}\n");
827 	p1a(udpps_pcbhashmiss, "{:not-for-hashed-pcb/%ju} "
828 	    "{N:/not for hashed pcb}\n");
829 	delivered = udpstat.udps_ipackets -
830 		    udpstat.udps_hdrops -
831 		    udpstat.udps_badlen -
832 		    udpstat.udps_badsum -
833 		    udpstat.udps_noport -
834 		    udpstat.udps_noportbcast -
835 		    udpstat.udps_fullsock;
836 	if (delivered || sflag <= 1)
837 		xo_emit("\t{:delivered-packets/%ju} {N:/delivered}\n",
838 		    (uint64_t)delivered);
839 	p(udps_opackets, "{:output-packets/%ju} {N:/datagram%s output}\n");
840 	/* the next statistic is cumulative in udps_noportbcast */
841 	p(udps_filtermcast, "{:multicast-source-filter-matches/%ju} "
842 	    "{N:/time%s multicast source filter matched}\n");
843 #undef p
844 #undef p1a
845 	xo_close_container("udp");
846 }
847 
848 /*
849  * Dump CARP statistics structure.
850  */
851 void
852 carp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
853 {
854 	struct carpstats carpstat;
855 
856 	if (fetch_stats("net.inet.carp.stats", off, &carpstat,
857 	    sizeof(carpstat), kread_counters) != 0)
858 		return;
859 
860 	xo_open_container(name);
861 	xo_emit("{T:/%s}:\n", name);
862 
863 #define	p(f, m) if (carpstat.f || sflag <= 1) \
864 	xo_emit(m, (uintmax_t)carpstat.f, plural(carpstat.f))
865 #define	p2(f, m) if (carpstat.f || sflag <= 1) \
866 	xo_emit(m, (uintmax_t)carpstat.f)
867 
868 	p(carps_ipackets, "\t{:received-inet-packets/%ju} "
869 	    "{N:/packet%s received (IPv4)}\n");
870 	p(carps_ipackets6, "\t{:received-inet6-packets/%ju} "
871 	    "{N:/packet%s received (IPv6)}\n");
872 	p(carps_badttl, "\t\t{:dropped-wrong-ttl/%ju} "
873 	    "{N:/packet%s discarded for wrong TTL}\n");
874 	p(carps_hdrops, "\t\t{:dropped-short-header/%ju} "
875 	    "{N:/packet%s shorter than header}\n");
876 	p(carps_badsum, "\t\t{:dropped-bad-checksum/%ju} "
877 	    "{N:/discarded for bad checksum%s}\n");
878 	p(carps_badver,	"\t\t{:dropped-bad-version/%ju} "
879 	    "{N:/discarded packet%s with a bad version}\n");
880 	p2(carps_badlen, "\t\t{:dropped-short-packet/%ju} "
881 	    "{N:/discarded because packet too short}\n");
882 	p2(carps_badauth, "\t\t{:dropped-bad-authentication/%ju} "
883 	    "{N:/discarded for bad authentication}\n");
884 	p2(carps_badvhid, "\t\t{:dropped-bad-vhid/%ju} "
885 	    "{N:/discarded for bad vhid}\n");
886 	p2(carps_badaddrs, "\t\t{:dropped-bad-address-list/%ju} "
887 	    "{N:/discarded because of a bad address list}\n");
888 	p(carps_opackets, "\t{:sent-inet-packets/%ju} "
889 	    "{N:/packet%s sent (IPv4)}\n");
890 	p(carps_opackets6, "\t{:sent-inet6-packets/%ju} "
891 	    "{N:/packet%s sent (IPv6)}\n");
892 	p2(carps_onomem, "\t\t{:send-failed-memory-error/%ju} "
893 	    "{N:/send failed due to mbuf memory error}\n");
894 #if notyet
895 	p(carps_ostates, "\t\t{:send-state-updates/%s} "
896 	    "{N:/state update%s sent}\n");
897 #endif
898 #undef p
899 #undef p2
900 	xo_close_container(name);
901 }
902 
903 /*
904  * Dump IP statistics structure.
905  */
906 void
907 ip_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
908 {
909 	struct ipstat ipstat;
910 
911 	if (fetch_stats("net.inet.ip.stats", off, &ipstat,
912 	    sizeof(ipstat), kread_counters) != 0)
913 		return;
914 
915 	xo_open_container(name);
916 	xo_emit("{T:/%s}:\n", name);
917 
918 #define	p(f, m) if (ipstat.f || sflag <= 1) \
919 	xo_emit(m, (uintmax_t )ipstat.f, plural(ipstat.f))
920 #define	p1a(f, m) if (ipstat.f || sflag <= 1) \
921 	xo_emit(m, (uintmax_t )ipstat.f)
922 
923 	p(ips_total, "\t{:received-packets/%ju} "
924 	    "{N:/total packet%s received}\n");
925 	p(ips_badsum, "\t{:dropped-bad-checksum/%ju} "
926 	    "{N:/bad header checksum%s}\n");
927 	p1a(ips_toosmall, "\t{:dropped-below-minimum-size/%ju} "
928 	    "{N:/with size smaller than minimum}\n");
929 	p1a(ips_tooshort, "\t{:dropped-short-packets/%ju} "
930 	    "{N:/with data size < data length}\n");
931 	p1a(ips_toolong, "\t{:dropped-too-long/%ju} "
932 	    "{N:/with ip length > max ip packet size}\n");
933 	p1a(ips_badhlen, "\t{:dropped-short-header-length/%ju} "
934 	    "{N:/with header length < data size}\n");
935 	p1a(ips_badlen, "\t{:dropped-short-data/%ju} "
936 	    "{N:/with data length < header length}\n");
937 	p1a(ips_badoptions, "\t{:dropped-bad-options/%ju} "
938 	    "{N:/with bad options}\n");
939 	p1a(ips_badvers, "\t{:dropped-bad-version/%ju} "
940 	    "{N:/with incorrect version number}\n");
941 	p(ips_fragments, "\t{:received-fragments/%ju} "
942 	    "{N:/fragment%s received}\n");
943 	p(ips_fragdropped, "\t{:dropped-fragments/%ju} "
944 	    "{N:/fragment%s dropped (dup or out of space)}\n");
945 	p(ips_fragtimeout, "\t{:dropped-fragments-after-timeout/%ju} "
946 	    "{N:/fragment%s dropped after timeout}\n");
947 	p(ips_reassembled, "\t{:reassembled-packets/%ju} "
948 	    "{N:/packet%s reassembled ok}\n");
949 	p(ips_delivered, "\t{:received-local-packets/%ju} "
950 	    "{N:/packet%s for this host}\n");
951 	p(ips_noproto, "\t{:dropped-unknown-protocol/%ju} "
952 	    "{N:/packet%s for unknown\\/unsupported protocol}\n");
953 	p(ips_forward, "\t{:forwarded-packets/%ju} "
954 	    "{N:/packet%s forwarded}");
955 	p(ips_fastforward, " ({:fast-forwarded-packets/%ju} "
956 	    "{N:/packet%s fast forwarded})");
957 	if (ipstat.ips_forward || sflag <= 1)
958 		xo_emit("\n");
959 	p(ips_cantforward, "\t{:packets-cannot-forward/%ju} "
960 	    "{N:/packet%s not forwardable}\n");
961 	p(ips_notmember, "\t{:received-unknown-multicast-group/%ju} "
962 	    "{N:/packet%s received for unknown multicast group}\n");
963 	p(ips_redirectsent, "\t{:redirects-sent/%ju} "
964 	    "{N:/redirect%s sent}\n");
965 	p(ips_localout, "\t{:sent-packets/%ju} "
966 	    "{N:/packet%s sent from this host}\n");
967 	p(ips_rawout, "\t{:send-packets-fabricated-header/%ju} "
968 	    "{N:/packet%s sent with fabricated ip header}\n");
969 	p(ips_odropped, "\t{:discard-no-mbufs/%ju} "
970 	    "{N:/output packet%s dropped due to no bufs, etc.}\n");
971 	p(ips_noroute, "\t{:discard-no-route/%ju} "
972 	    "{N:/output packet%s discarded due to no route}\n");
973 	p(ips_fragmented, "\t{:sent-fragments/%ju} "
974 	    "{N:/output datagram%s fragmented}\n");
975 	p(ips_ofragments, "\t{:fragments-created/%ju} "
976 	    "{N:/fragment%s created}\n");
977 	p(ips_cantfrag, "\t{:discard-cannot-fragment/%ju} "
978 	    "{N:/datagram%s that can't be fragmented}\n");
979 	p(ips_nogif, "\t{:discard-tunnel-no-gif/%ju} "
980 	    "{N:/tunneling packet%s that can't find gif}\n");
981 	p(ips_badaddr, "\t{:discard-bad-address/%ju} "
982 	    "{N:/datagram%s with bad address in header}\n");
983 #undef p
984 #undef p1a
985 	xo_close_container(name);
986 }
987 
988 /*
989  * Dump ARP statistics structure.
990  */
991 void
992 arp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
993 {
994 	struct arpstat arpstat;
995 
996 	if (fetch_stats("net.link.ether.arp.stats", off, &arpstat,
997 	    sizeof(arpstat), kread_counters) != 0)
998 		return;
999 
1000 	xo_open_container(name);
1001 	xo_emit("{T:/%s}:\n", name);
1002 
1003 #define	p(f, m) if (arpstat.f || sflag <= 1) \
1004 	xo_emit("\t" m, (uintmax_t)arpstat.f, plural(arpstat.f))
1005 #define	p2(f, m) if (arpstat.f || sflag <= 1) \
1006 	xo_emit("\t" m, (uintmax_t)arpstat.f, pluralies(arpstat.f))
1007 
1008 	p(txrequests, "{:sent-requests/%ju} {N:/ARP request%s sent}\n");
1009 	p2(txreplies, "{:sent-replies/%ju} {N:/ARP repl%s sent}\n");
1010 	p(rxrequests, "{:received-requests/%ju} "
1011 	    "{N:/ARP request%s received}\n");
1012 	p2(rxreplies, "{:received-replies/%ju} "
1013 	    "{N:/ARP repl%s received}\n");
1014 	p(received, "{:received-packers/%ju} "
1015 	    "{N:/ARP packet%s received}\n");
1016 	p(dropped, "{:dropped-no-entry/%ju} "
1017 	    "{N:/total packet%s dropped due to no ARP entry}\n");
1018 	p(timeouts, "{:entries-timeout/%ju} "
1019 	    "{N:/ARP entry%s timed out}\n");
1020 	p(dupips, "{:dropped-duplicate-address/%ju} "
1021 	    "{N:/Duplicate IP%s seen}\n");
1022 #undef p
1023 #undef p2
1024 	xo_close_container(name);
1025 }
1026 
1027 
1028 
1029 static	const char *icmpnames[ICMP_MAXTYPE + 1] = {
1030 	"echo reply",			/* RFC 792 */
1031 	"#1",
1032 	"#2",
1033 	"destination unreachable",	/* RFC 792 */
1034 	"source quench",		/* RFC 792 */
1035 	"routing redirect",		/* RFC 792 */
1036 	"#6",
1037 	"#7",
1038 	"echo",				/* RFC 792 */
1039 	"router advertisement",		/* RFC 1256 */
1040 	"router solicitation",		/* RFC 1256 */
1041 	"time exceeded",		/* RFC 792 */
1042 	"parameter problem",		/* RFC 792 */
1043 	"time stamp",			/* RFC 792 */
1044 	"time stamp reply",		/* RFC 792 */
1045 	"information request",		/* RFC 792 */
1046 	"information request reply",	/* RFC 792 */
1047 	"address mask request",		/* RFC 950 */
1048 	"address mask reply",		/* RFC 950 */
1049 	"#19",
1050 	"#20",
1051 	"#21",
1052 	"#22",
1053 	"#23",
1054 	"#24",
1055 	"#25",
1056 	"#26",
1057 	"#27",
1058 	"#28",
1059 	"#29",
1060 	"icmp traceroute",		/* RFC 1393 */
1061 	"datagram conversion error",	/* RFC 1475 */
1062 	"mobile host redirect",
1063 	"IPv6 where-are-you",
1064 	"IPv6 i-am-here",
1065 	"mobile registration req",
1066 	"mobile registration reply",
1067 	"domain name request",		/* RFC 1788 */
1068 	"domain name reply",		/* RFC 1788 */
1069 	"icmp SKIP",
1070 	"icmp photuris",		/* RFC 2521 */
1071 };
1072 
1073 /*
1074  * Dump ICMP statistics.
1075  */
1076 void
1077 icmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1078 {
1079 	struct icmpstat icmpstat;
1080 	size_t len;
1081 	int i, first;
1082 
1083 	if (fetch_stats("net.inet.icmp.stats", off, &icmpstat,
1084 	    sizeof(icmpstat), kread_counters) != 0)
1085 		return;
1086 
1087 	xo_open_container(name);
1088 	xo_emit("{T:/%s}:\n", name);
1089 
1090 #define	p(f, m) if (icmpstat.f || sflag <= 1) \
1091 	xo_emit(m, icmpstat.f, plural(icmpstat.f))
1092 #define	p1a(f, m) if (icmpstat.f || sflag <= 1) \
1093 	xo_emit(m, icmpstat.f)
1094 #define	p2(f, m) if (icmpstat.f || sflag <= 1) \
1095 	xo_emit(m, icmpstat.f, plurales(icmpstat.f))
1096 
1097 	p(icps_error, "\t{:icmp-calls/%lu} "
1098 	    "{N:/call%s to icmp_error}\n");
1099 	p(icps_oldicmp, "\t{:errors-not-from-message/%lu} "
1100 	    "{N:/error%s not generated in response to an icmp message}\n");
1101 
1102 	for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1103 		if (icmpstat.icps_outhist[i] != 0) {
1104 			if (first) {
1105 				xo_open_list("output-histogram");
1106 				xo_emit("\tOutput histogram:\n");
1107 				first = 0;
1108 			}
1109 			xo_open_instance("output-histogram");
1110 			if (icmpnames[i] != NULL)
1111 				xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1112 				    icmpnames[i], icmpstat.icps_outhist[i]);
1113 			else
1114 				xo_emit("\t\tunknown ICMP #{k:name/%d}: "
1115 				    "{:count/%lu}\n",
1116 				    i, icmpstat.icps_outhist[i]);
1117 			xo_close_instance("output-histogram");
1118 		}
1119 	}
1120 	if (!first)
1121 		xo_close_list("output-histogram");
1122 
1123 	p(icps_badcode, "\t{:dropped-bad-code/%lu} "
1124 	    "{N:/message%s with bad code fields}\n");
1125 	p(icps_tooshort, "\t{:dropped-too-short/%lu} "
1126 	    "{N:/message%s less than the minimum length}\n");
1127 	p(icps_checksum, "\t{:dropped-bad-checksum/%lu} "
1128 	    "{N:/message%s with bad checksum}\n");
1129 	p(icps_badlen, "\t{:dropped-bad-length/%lu} "
1130 	    "{N:/message%s with bad length}\n");
1131 	p1a(icps_bmcastecho, "\t{:dropped-multicast-echo/%lu} "
1132 	    "{N:/multicast echo requests ignored}\n");
1133 	p1a(icps_bmcasttstamp, "\t{:dropped-multicast-timestamp/%lu} "
1134 	    "{N:/multicast timestamp requests ignored}\n");
1135 
1136 	for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++) {
1137 		if (icmpstat.icps_inhist[i] != 0) {
1138 			if (first) {
1139 				xo_open_list("input-histogram");
1140 				xo_emit("\tInput histogram:\n");
1141 				first = 0;
1142 			}
1143 			xo_open_instance("input-histogram");
1144 			if (icmpnames[i] != NULL)
1145 				xo_emit("\t\t{k:name/%s}: {:count/%lu}\n",
1146 					icmpnames[i],
1147 					icmpstat.icps_inhist[i]);
1148 			else
1149 				xo_emit(
1150 			"\t\tunknown ICMP #{k:name/%d}: {:count/%lu}\n",
1151 					i, icmpstat.icps_inhist[i]);
1152 			xo_close_instance("input-histogram");
1153 		}
1154 	}
1155 	if (!first)
1156 		xo_close_list("input-histogram");
1157 
1158 	p(icps_reflect, "\t{:sent-packets/%lu} "
1159 	    "{N:/message response%s generated}\n");
1160 	p2(icps_badaddr, "\t{:discard-invalid-return-address/%lu} "
1161 	    "{N:/invalid return address%s}\n");
1162 	p(icps_noroute, "\t{:discard-no-route/%lu} "
1163 	    "{N:/no return route%s}\n");
1164 #undef p
1165 #undef p1a
1166 #undef p2
1167 	if (live) {
1168 		len = sizeof i;
1169 		if (sysctlbyname("net.inet.icmp.maskrepl", &i, &len, NULL, 0) <
1170 		    0)
1171 			return;
1172 		xo_emit("\tICMP address mask responses are "
1173 		    "{q:icmp-address-responses/%sabled}\n", i ? "en" : "dis");
1174 	}
1175 
1176 	xo_close_container(name);
1177 }
1178 
1179 /*
1180  * Dump IGMP statistics structure.
1181  */
1182 void
1183 igmp_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
1184 {
1185 	struct igmpstat igmpstat;
1186 
1187 	if (fetch_stats("net.inet.igmp.stats", 0, &igmpstat,
1188 	    sizeof(igmpstat), kread) != 0)
1189 		return;
1190 
1191 	if (igmpstat.igps_version != IGPS_VERSION_3) {
1192 		xo_warnx("%s: version mismatch (%d != %d)", __func__,
1193 		    igmpstat.igps_version, IGPS_VERSION_3);
1194 	}
1195 	if (igmpstat.igps_len != IGPS_VERSION3_LEN) {
1196 		xo_warnx("%s: size mismatch (%d != %d)", __func__,
1197 		    igmpstat.igps_len, IGPS_VERSION3_LEN);
1198 	}
1199 
1200 	xo_open_container(name);
1201 	xo_emit("{T:/%s}:\n", name);
1202 
1203 #define	p64(f, m) if (igmpstat.f || sflag <= 1) \
1204 	xo_emit(m, (uintmax_t) igmpstat.f, plural(igmpstat.f))
1205 #define	py64(f, m) if (igmpstat.f || sflag <= 1) \
1206 	xo_emit(m, (uintmax_t) igmpstat.f, pluralies(igmpstat.f))
1207 
1208 	p64(igps_rcv_total, "\t{:received-messages/%ju} "
1209 	    "{N:/message%s received}\n");
1210 	p64(igps_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1211 	    "{N:/message%s received with too few bytes}\n");
1212 	p64(igps_rcv_badttl, "\t{:dropped-wrong-ttl/%ju} "
1213 	    "{N:/message%s received with wrong TTL}\n");
1214 	p64(igps_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1215 	    "{N:/message%s received with bad checksum}\n");
1216 	py64(igps_rcv_v1v2_queries, "\t{:received-membership-queries/%ju} "
1217 	    "{N:/V1\\/V2 membership quer%s received}\n");
1218 	py64(igps_rcv_v3_queries, "\t{:received-v3-membership-queries/%ju} "
1219 	    "{N:/V3 membership quer%s received}\n");
1220 	py64(igps_rcv_badqueries, "\t{:dropped-membership-queries/%ju} "
1221 	    "{N:/membership quer%s received with invalid field(s)}\n");
1222 	py64(igps_rcv_gen_queries, "\t{:received-general-queries/%ju} "
1223 	    "{N:/general quer%s received}\n");
1224 	py64(igps_rcv_group_queries, "\t{:received-group-queries/%ju} "
1225 	    "{N:/group quer%s received}\n");
1226 	py64(igps_rcv_gsr_queries, "\t{:received-group-source-queries/%ju} "
1227 	    "{N:/group-source quer%s received}\n");
1228 	py64(igps_drop_gsr_queries, "\t{:dropped-group-source-queries/%ju} "
1229 	    "{N:/group-source quer%s dropped}\n");
1230 	p64(igps_rcv_reports, "\t{:received-membership-requests/%ju} "
1231 	    "{N:/membership report%s received}\n");
1232 	p64(igps_rcv_badreports, "\t{:dropped-membership-reports/%ju} "
1233 	    "{N:/membership report%s received with invalid field(s)}\n");
1234 	p64(igps_rcv_ourreports, "\t"
1235 	    "{:received-membership-reports-matching/%ju} "
1236 	    "{N:/membership report%s received for groups to which we belong}"
1237 	    "\n");
1238 	p64(igps_rcv_nora, "\t{:received-v3-reports-no-router-alert/%ju} "
1239 	    "{N:/V3 report%s received without Router Alert}\n");
1240 	p64(igps_snd_reports, "\t{:sent-membership-reports/%ju} "
1241 	    "{N:/membership report%s sent}\n");
1242 #undef p64
1243 #undef py64
1244 	xo_close_container(name);
1245 }
1246 
1247 /*
1248  * Dump PIM statistics structure.
1249  */
1250 void
1251 pim_stats(u_long off __unused, const char *name, int af1 __unused,
1252     int proto __unused)
1253 {
1254 	struct pimstat pimstat;
1255 
1256 	if (fetch_stats("net.inet.pim.stats", off, &pimstat,
1257 	    sizeof(pimstat), kread_counters) != 0)
1258 		return;
1259 
1260 	xo_open_container(name);
1261 	xo_emit("{T:/%s}:\n", name);
1262 
1263 #define	p(f, m) if (pimstat.f || sflag <= 1) \
1264 	xo_emit(m, (uintmax_t)pimstat.f, plural(pimstat.f))
1265 #define	py(f, m) if (pimstat.f || sflag <= 1) \
1266 	xo_emit(m, (uintmax_t)pimstat.f, pimstat.f != 1 ? "ies" : "y")
1267 
1268 	p(pims_rcv_total_msgs, "\t{:received-messages/%ju} "
1269 	    "{N:/message%s received}\n");
1270 	p(pims_rcv_total_bytes, "\t{:received-bytes/%ju} "
1271 	    "{N:/byte%s received}\n");
1272 	p(pims_rcv_tooshort, "\t{:dropped-too-short/%ju} "
1273 	    "{N:/message%s received with too few bytes}\n");
1274 	p(pims_rcv_badsum, "\t{:dropped-bad-checksum/%ju} "
1275 	    "{N:/message%s received with bad checksum}\n");
1276 	p(pims_rcv_badversion, "\t{:dropped-bad-version/%ju} "
1277 	    "{N:/message%s received with bad version}\n");
1278 	p(pims_rcv_registers_msgs, "\t{:received-data-register-messages/%ju} "
1279 	    "{N:/data register message%s received}\n");
1280 	p(pims_rcv_registers_bytes, "\t{:received-data-register-bytes/%ju} "
1281 	    "{N:/data register byte%s received}\n");
1282 	p(pims_rcv_registers_wrongiif, "\t"
1283 	    "{:received-data-register-wrong-interface/%ju} "
1284 	    "{N:/data register message%s received on wrong iif}\n");
1285 	p(pims_rcv_badregisters, "\t{:received-bad-registers/%ju} "
1286 	    "{N:/bad register%s received}\n");
1287 	p(pims_snd_registers_msgs, "\t{:sent-data-register-messages/%ju} "
1288 	    "{N:/data register message%s sent}\n");
1289 	p(pims_snd_registers_bytes, "\t{:sent-data-register-bytes/%ju} "
1290 	    "{N:/data register byte%s sent}\n");
1291 #undef p
1292 #undef py
1293 	xo_close_container(name);
1294 }
1295 
1296 /*
1297  * Pretty print an Internet address (net address + port).
1298  */
1299 void
1300 inetprint(const char *container, struct in_addr *in, int port,
1301     const char *proto, int num_port, const int af1)
1302 {
1303 	struct servent *sp = 0;
1304 	char line[80], *cp;
1305 	int width;
1306 	size_t alen, plen;
1307 
1308 	if (container)
1309 		xo_open_container(container);
1310 
1311 	if (Wflag)
1312 	    snprintf(line, sizeof(line), "%s.", inetname(in));
1313 	else
1314 	    snprintf(line, sizeof(line), "%.*s.",
1315 		(Aflag && !num_port) ? 12 : 16, inetname(in));
1316 	alen = strlen(line);
1317 	cp = line + alen;
1318 	if (!num_port && port)
1319 		sp = getservbyport((int)port, proto);
1320 	if (sp || port == 0)
1321 		snprintf(cp, sizeof(line) - alen,
1322 		    "%.15s ", sp ? sp->s_name : "*");
1323 	else
1324 		snprintf(cp, sizeof(line) - alen,
1325 		    "%d ", ntohs((u_short)port));
1326 	width = (Aflag && !Wflag) ? 18 :
1327 		((!Wflag || af1 == AF_INET) ? 22 : 45);
1328 	if (Wflag)
1329 		xo_emit("{d:target/%-*s} ", width, line);
1330 	else
1331 		xo_emit("{d:target/%-*.*s} ", width, width, line);
1332 
1333 	plen = strlen(cp) - 1;
1334 	alen--;
1335 	xo_emit("{e:address/%*.*s}{e:port/%*.*s}", alen, alen, line, plen,
1336 	    plen, cp);
1337 
1338 	if (container)
1339 		xo_close_container(container);
1340 }
1341 
1342 /*
1343  * Construct an Internet address representation.
1344  * If numeric_addr has been supplied, give
1345  * numeric value, otherwise try for symbolic name.
1346  */
1347 char *
1348 inetname(struct in_addr *inp)
1349 {
1350 	char *cp;
1351 	static char line[MAXHOSTNAMELEN];
1352 	struct hostent *hp;
1353 	struct netent *np;
1354 
1355 	cp = 0;
1356 	if (!numeric_addr && inp->s_addr != INADDR_ANY) {
1357 		int net = inet_netof(*inp);
1358 		int lna = inet_lnaof(*inp);
1359 
1360 		if (lna == INADDR_ANY) {
1361 			np = getnetbyaddr(net, AF_INET);
1362 			if (np)
1363 				cp = np->n_name;
1364 		}
1365 		if (cp == NULL) {
1366 			hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
1367 			if (hp) {
1368 				cp = hp->h_name;
1369 				trimdomain(cp, strlen(cp));
1370 			}
1371 		}
1372 	}
1373 	if (inp->s_addr == INADDR_ANY)
1374 		strcpy(line, "*");
1375 	else if (cp) {
1376 		strlcpy(line, cp, sizeof(line));
1377 	} else {
1378 		inp->s_addr = ntohl(inp->s_addr);
1379 #define	C(x)	((u_int)((x) & 0xff))
1380 		snprintf(line, sizeof(line), "%u.%u.%u.%u",
1381 		    C(inp->s_addr >> 24), C(inp->s_addr >> 16),
1382 		    C(inp->s_addr >> 8), C(inp->s_addr));
1383 	}
1384 	return (line);
1385 }
1386