1 /* $NetBSD: inet.c,v 1.119 2022/10/28 05:27:17 ozaki-r Exp $ */
2
3 /*
4 * Copyright (c) 1983, 1988, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * 3. Neither the name of the University nor the names of its contributors
16 * may be used to endorse or promote products derived from this software
17 * without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 #if 0
35 static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94";
36 #else
37 __RCSID("$NetBSD: inet.c,v 1.119 2022/10/28 05:27:17 ozaki-r Exp $");
38 #endif
39 #endif /* not lint */
40
41 #define _CALLOUT_PRIVATE /* for defs in sys/callout.h */
42
43 #include <sys/param.h>
44 #include <sys/queue.h>
45 #include <sys/socket.h>
46 #include <sys/socketvar.h>
47 #include <sys/mbuf.h>
48 #include <sys/protosw.h>
49 #include <sys/sysctl.h>
50
51 #include <net/if_arp.h>
52 #include <net/route.h>
53 #include <netinet/in.h>
54 #include <netinet/in_systm.h>
55 #include <netinet/ip.h>
56 #include <netinet/in_pcb.h>
57 #define ICMP_STRINGS
58 #include <netinet/ip_icmp.h>
59
60 #ifdef INET6
61 #include <netinet/ip6.h>
62 #endif
63
64 #include <netinet/icmp_var.h>
65 #include <netinet/igmp_var.h>
66 #include <netinet/ip_var.h>
67 #include <netinet/pim_var.h>
68 #include <netinet/tcp.h>
69 #include <netinet/tcp_seq.h>
70 #define TCPSTATES
71 #include <netinet/tcp_fsm.h>
72 #define TCPTIMERS
73 #include <netinet/tcp_timer.h>
74 #include <netinet/tcp_var.h>
75 #include <netinet/tcp_debug.h>
76 #include <netinet/udp.h>
77 #include <netinet/ip_carp.h>
78 #include <netinet/udp_var.h>
79 #include <netinet/tcp_vtw.h>
80
81 #include <arpa/inet.h>
82 #include <kvm.h>
83 #include <netdb.h>
84 #include <stdio.h>
85 #include <string.h>
86 #include <unistd.h>
87 #include <stdlib.h>
88 #include <err.h>
89 #include <util.h>
90 #include <errno.h>
91
92 #include "netstat.h"
93 #include "vtw.h"
94 #include "prog_ops.h"
95
96 char *inetname(struct in_addr *);
97 void inetprint(struct in_addr *, uint16_t, const char *, int);
98
99 void print_vtw_v4(const vtw_t *);
100
101 /*
102 * Print a summary of connections related to an Internet
103 * protocol. For TCP, also give state of connection.
104 * Listening processes (aflag) are suppressed unless the
105 * -a (all) flag is specified.
106 */
107 static int width;
108 static int compact;
109
110 /* VTW-related variables. */
111 static struct timeval now;
112
113 static void
protoprhdr(void)114 protoprhdr(void)
115 {
116 printf("Active Internet connections");
117 if (aflag)
118 printf(" (including servers)");
119 putchar('\n');
120 if (Aflag)
121 printf("%-8.8s ", "PCB");
122 printf(
123 Vflag ? "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %-13.13s Expires\n"
124 : "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %s\n",
125 "Proto", "Recv-Q", "Send-Q", compact ? "" : " ",
126 width, width, "Local Address",
127 width, width, "Foreign Address",
128 "State");
129 }
130
131 static void
protopr0(intptr_t ppcb,u_long rcv_sb_cc,u_long snd_sb_cc,struct in_addr * laddr,uint16_t lport,struct in_addr * faddr,uint16_t fport,short t_state,const char * name,int inp_flags,const struct timeval * expires)132 protopr0(intptr_t ppcb, u_long rcv_sb_cc, u_long snd_sb_cc,
133 struct in_addr *laddr, uint16_t lport,
134 struct in_addr *faddr, uint16_t fport,
135 short t_state, const char *name, int inp_flags,
136 const struct timeval *expires)
137 {
138 static const char *shorttcpstates[] = {
139 "CLOSED", "LISTEN", "SYNSEN", "SYSRCV",
140 "ESTABL", "CLWAIT", "FWAIT1", "CLOSNG",
141 "LASTAK", "FWAIT2", "TMWAIT"
142 };
143 int istcp;
144
145 istcp = strcmp(name, "tcp") == 0;
146
147 if (Aflag)
148 printf("%8" PRIxPTR " ", ppcb);
149
150 printf("%-5.5s %6ld %6ld%s", name, rcv_sb_cc, snd_sb_cc,
151 compact ? "" : " ");
152 if (numeric_port) {
153 inetprint(laddr, lport, name, 1);
154 inetprint(faddr, fport, name, 1);
155 } else if (inp_flags & INP_ANONPORT) {
156 inetprint(laddr, lport, name, 1);
157 inetprint(faddr, fport, name, 0);
158 } else {
159 inetprint(laddr, lport, name, 0);
160 inetprint(faddr, fport, name, 0);
161 }
162 if (istcp) {
163 if (t_state < 0 || t_state >= TCP_NSTATES)
164 printf(" %d", t_state);
165 else
166 printf(" %s", compact ? shorttcpstates[t_state] :
167 tcpstates[t_state]);
168 }
169 if (Vflag && expires != NULL) {
170 if (expires->tv_sec == 0 && expires->tv_usec == -1)
171 printf(" reclaimed");
172 else {
173 struct timeval delta;
174
175 timersub(expires, &now, &delta);
176 printf(" %.3fms",
177 delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0);
178 }
179 }
180 putchar('\n');
181 }
182
183 static void
dbg_printf(const char * fmt,...)184 dbg_printf(const char *fmt, ...)
185 {
186 return;
187 }
188
189 void
print_vtw_v4(const vtw_t * vtw)190 print_vtw_v4(const vtw_t *vtw)
191 {
192 const vtw_v4_t *v4 = (const vtw_v4_t *)vtw;
193 struct timeval delta;
194 struct in_addr la, fa;
195 char buf[2][32];
196 static const struct timeval zero = {.tv_sec = 0, .tv_usec = 0};
197
198 la.s_addr = v4->laddr;
199 fa.s_addr = v4->faddr;
200
201 snprintf(&buf[0][0], 32, "%s", inet_ntoa(la));
202 snprintf(&buf[1][0], 32, "%s", inet_ntoa(fa));
203
204 timersub(&vtw->expire, &now, &delta);
205
206 if (vtw->expire.tv_sec == 0 && vtw->expire.tv_usec == -1) {
207 dbg_printf("%15.15s:%d %15.15s:%d reclaimed\n",
208 buf[0], ntohs(v4->lport),
209 buf[1], ntohs(v4->fport));
210 if (!(Vflag && vflag))
211 return;
212 } else if (vtw->expire.tv_sec == 0)
213 return;
214 else if (timercmp(&delta, &zero, <) && !(Vflag && vflag)) {
215 dbg_printf("%15.15s:%d %15.15s:%d expired\n",
216 buf[0], ntohs(v4->lport),
217 buf[1], ntohs(v4->fport));
218 return;
219 } else {
220 dbg_printf("%15.15s:%d %15.15s:%d expires in %.3fms\n",
221 buf[0], ntohs(v4->lport),
222 buf[1], ntohs(v4->fport),
223 delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0);
224 }
225 protopr0(0, 0, 0,
226 &la, v4->lport,
227 &fa, v4->fport,
228 TCPS_TIME_WAIT, "tcp", 0, &vtw->expire);
229 }
230
231 struct kinfo_pcb *
getpcblist_sysctl(const char * name,size_t * len)232 getpcblist_sysctl(const char *name, size_t *len)
233 {
234 int mib[8];
235 size_t namelen = 0, size = 0;
236 char *mibname = NULL;
237 struct kinfo_pcb *pcblist;
238
239 memset(mib, 0, sizeof(mib));
240
241 if (asprintf(&mibname, "net.inet%s.%s.pcblist", name + 3, name) == -1)
242 err(1, "asprintf");
243
244 /* get dynamic pcblist node */
245 if (prog_sysctlnametomib(mibname, mib, &namelen) == -1) {
246 if (errno == ENOENT) {
247 *len = 0;
248 return NULL;
249 }
250
251 err(1, "sysctlnametomib: %s", mibname);
252 }
253
254 free(mibname);
255
256 if (prog_sysctl(mib, __arraycount(mib), NULL, &size, NULL, 0) == -1)
257 err(1, "sysctl (query)");
258
259 if ((pcblist = malloc(size)) == NULL)
260 err(1, "malloc");
261 memset(pcblist, 0, size);
262
263 mib[6] = sizeof(*pcblist);
264 mib[7] = size / sizeof(*pcblist);
265
266 if (prog_sysctl(mib, __arraycount(mib), pcblist, &size, NULL, 0) == -1)
267 err(1, "sysctl (copy)");
268
269 *len = size / sizeof(*pcblist);
270 return pcblist;
271
272 }
273
274 static struct kinfo_pcb *
getpcblist_kmem(u_long off,const char * name,size_t * len)275 getpcblist_kmem(u_long off, const char *name, size_t *len)
276 {
277 struct inpcbtable table;
278 struct inpcb *next, *prev;
279 struct in4pcb in4pcb;
280 struct inpcb *inp;
281 struct tcpcb tcpcb;
282 struct socket sockb;
283 int istcp = strcmp(name, "tcp") == 0;
284 struct kinfo_pcb *pcblist;
285 size_t size = 100, i;
286 struct sockaddr_in sin;
287 struct inpcbqueue *head;
288
289 if (off == 0) {
290 *len = 0;
291 return NULL;
292 }
293
294 kread(off, (char *)&table, sizeof table);
295 head = &table.inpt_queue;
296 next = TAILQ_FIRST(head);
297 prev = TAILQ_END(head);
298
299 pcblist = NULL;
300 if (reallocarr(&pcblist, size, sizeof(*pcblist)) != 0)
301 err(1, "reallocarr");
302
303 i = 0;
304 while (next != TAILQ_END(head)) {
305 kread((u_long)next, (char *)&in4pcb, sizeof in4pcb);
306 prev = next;
307 inp = (struct inpcb *)&in4pcb;
308 next = TAILQ_NEXT(inp, inp_queue);
309
310 if (inp->inp_af != AF_INET)
311 continue;
312
313 kread((u_long)inp->inp_socket, (char *)&sockb, sizeof(sockb));
314 if (istcp) {
315 kread((u_long)inp->inp_ppcb,
316 (char *)&tcpcb, sizeof (tcpcb));
317 }
318 pcblist[i].ki_ppcbaddr =
319 istcp ? (uintptr_t) inp->inp_ppcb : (uintptr_t) prev;
320 pcblist[i].ki_rcvq = (uint64_t)sockb.so_rcv.sb_cc;
321 pcblist[i].ki_sndq = (uint64_t)sockb.so_snd.sb_cc;
322
323 sin.sin_addr = in4p_laddr(inp);
324 sin.sin_port = inp->inp_lport;
325 memcpy(&pcblist[i].ki_s, &sin, sizeof(sin));
326 sin.sin_addr = in4p_faddr(inp);
327 sin.sin_port = inp->inp_fport;
328 memcpy(&pcblist[i].ki_d, &sin, sizeof(sin));
329 pcblist[i].ki_tstate = tcpcb.t_state;
330 pcblist[i].ki_pflags = inp->inp_flags;
331 if (i++ == size) {
332 size += 100;
333 if (reallocarr(&pcblist, size, sizeof(*pcblist)) != 0)
334 err(1, "reallocarr");
335 }
336 }
337 *len = i;
338 return pcblist;
339 }
340
341 void
protopr(u_long off,const char * name)342 protopr(u_long off, const char *name)
343 {
344 static int first = 1;
345 struct kinfo_pcb *pcblist;
346 size_t i, len;
347
348 compact = 0;
349 if (Aflag) {
350 if (!numeric_addr)
351 width = 18;
352 else {
353 width = 21;
354 compact = 1;
355 }
356 } else
357 width = 22;
358
359 if (use_sysctl)
360 pcblist = getpcblist_sysctl(name, &len);
361 else
362 pcblist = getpcblist_kmem(off, name, &len);
363
364 for (i = 0; i < len; i++) {
365 struct sockaddr_in src, dst;
366
367 memcpy(&src, &pcblist[i].ki_s, sizeof(src));
368 memcpy(&dst, &pcblist[i].ki_d, sizeof(dst));
369
370 if (!aflag && (inet_lnaof(dst.sin_addr) == INADDR_ANY))
371 continue;
372
373 if (first) {
374 protoprhdr();
375 first = 0;
376 }
377 protopr0((intptr_t) pcblist[i].ki_ppcbaddr,
378 pcblist[i].ki_rcvq, pcblist[i].ki_sndq,
379 &src.sin_addr, src.sin_port,
380 &dst.sin_addr, dst.sin_port,
381 pcblist[i].ki_tstate, name,
382 pcblist[i].ki_pflags, NULL);
383 }
384
385 free(pcblist);
386
387 if (strcmp(name, "tcp") == 0) {
388 struct timeval t;
389 timebase(&t);
390 gettimeofday(&now, NULL);
391 timersub(&now, &t, &now);
392 show_vtw_v4(print_vtw_v4);
393 }
394 }
395
396 /*
397 * Dump TCP statistics structure.
398 */
399 void
tcp_stats(u_long off,const char * name)400 tcp_stats(u_long off, const char *name)
401 {
402 uint64_t tcpstat[TCP_NSTATS];
403
404 if (use_sysctl) {
405 size_t size = sizeof(tcpstat);
406
407 if (prog_sysctlbyname("net.inet.tcp.stats", tcpstat, &size,
408 NULL, 0) == -1 && errno != ENOMEM)
409 return;
410 } else {
411 warnx("%s stats not available via KVM.", name);
412 return;
413 }
414
415 printf ("%s:\n", name);
416
417 #define ps(f, m) if (tcpstat[f] || sflag <= 1) \
418 printf(m, tcpstat[f])
419 #define p(f, m) if (tcpstat[f] || sflag <= 1) \
420 printf(m, tcpstat[f], plural(tcpstat[f]))
421 #define p2(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \
422 printf(m, tcpstat[f1], plural(tcpstat[f1]), \
423 tcpstat[f2], plural(tcpstat[f2]))
424 #define p2s(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \
425 printf(m, tcpstat[f1], plural(tcpstat[f1]), \
426 tcpstat[f2])
427 #define p3(f, m) if (tcpstat[f] || sflag <= 1) \
428 printf(m, tcpstat[f], plurales(tcpstat[f]))
429
430 p(TCP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n");
431 p2(TCP_STAT_SNDPACK,TCP_STAT_SNDBYTE,
432 "\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s)\n");
433 p2(TCP_STAT_SNDREXMITPACK, TCP_STAT_SNDREXMITBYTE,
434 "\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s) retransmitted\n");
435 p2s(TCP_STAT_SNDACKS, TCP_STAT_DELACK,
436 "\t\t%" PRIu64 " ack-only packet%s (%" PRIu64 " delayed)\n");
437 p(TCP_STAT_SNDURG, "\t\t%" PRIu64 " URG only packet%s\n");
438 p(TCP_STAT_SNDPROBE, "\t\t%" PRIu64 " window probe packet%s\n");
439 p(TCP_STAT_SNDWINUP, "\t\t%" PRIu64 " window update packet%s\n");
440 p(TCP_STAT_SNDCTRL, "\t\t%" PRIu64 " control packet%s\n");
441 p(TCP_STAT_SELFQUENCH,
442 "\t\t%" PRIu64 " send attempt%s resulted in self-quench\n");
443 p(TCP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n");
444 p2(TCP_STAT_RCVACKPACK, TCP_STAT_RCVACKBYTE,
445 "\t\t%" PRIu64 " ack%s (for %" PRIu64 " byte%s)\n");
446 p(TCP_STAT_RCVDUPACK, "\t\t%" PRIu64 " duplicate ack%s\n");
447 p(TCP_STAT_RCVACKTOOMUCH, "\t\t%" PRIu64 " ack%s for unsent data\n");
448 p2(TCP_STAT_RCVPACK, TCP_STAT_RCVBYTE,
449 "\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) received in-sequence\n");
450 p2(TCP_STAT_RCVDUPPACK, TCP_STAT_RCVDUPBYTE,
451 "\t\t%" PRIu64 " completely duplicate packet%s (%" PRIu64 " byte%s)\n");
452 p(TCP_STAT_PAWSDROP, "\t\t%" PRIu64 " old duplicate packet%s\n");
453 p2(TCP_STAT_RCVPARTDUPPACK, TCP_STAT_RCVPARTDUPBYTE,
454 "\t\t%" PRIu64 " packet%s with some dup. data (%" PRIu64 " byte%s duped)\n");
455 p2(TCP_STAT_RCVOOPACK, TCP_STAT_RCVOOBYTE,
456 "\t\t%" PRIu64 " out-of-order packet%s (%" PRIu64 " byte%s)\n");
457 p2(TCP_STAT_RCVPACKAFTERWIN, TCP_STAT_RCVBYTEAFTERWIN,
458 "\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) of data after window\n");
459 p(TCP_STAT_RCVWINPROBE, "\t\t%" PRIu64 " window probe%s\n");
460 p(TCP_STAT_RCVWINUPD, "\t\t%" PRIu64 " window update packet%s\n");
461 p(TCP_STAT_RCVAFTERCLOSE,
462 "\t\t%" PRIu64 " packet%s received after close\n");
463 p(TCP_STAT_RCVBADSUM,
464 "\t\t%" PRIu64 " discarded for bad checksum%s\n");
465 p(TCP_STAT_RCVBADOFF,
466 "\t\t%" PRIu64 " discarded for bad header offset field%s\n");
467 ps(TCP_STAT_RCVSHORT,
468 "\t\t%" PRIu64 " discarded because packet too short\n");
469 p(TCP_STAT_CONNATTEMPT, "\t%" PRIu64 " connection request%s\n");
470 p(TCP_STAT_ACCEPTS, "\t%" PRIu64 " connection accept%s\n");
471 p(TCP_STAT_CONNECTS,
472 "\t%" PRIu64 " connection%s established (including accepts)\n");
473 p2(TCP_STAT_CLOSED, TCP_STAT_DROPS,
474 "\t%" PRIu64 " connection%s closed (including %" PRIu64 " drop%s)\n");
475 p(TCP_STAT_CONNDROPS,
476 "\t%" PRIu64 " embryonic connection%s dropped\n");
477 p(TCP_STAT_DELAYED_FREE, "\t%" PRIu64 " delayed free%s of tcpcb\n");
478 p2(TCP_STAT_RTTUPDATED, TCP_STAT_SEGSTIMED,
479 "\t%" PRIu64 " segment%s updated rtt (of %" PRIu64 " attempt%s)\n");
480 p(TCP_STAT_REXMTTIMEO, "\t%" PRIu64 " retransmit timeout%s\n");
481 p(TCP_STAT_TIMEOUTDROP,
482 "\t\t%" PRIu64 " connection%s dropped by rexmit timeout\n");
483 p2(TCP_STAT_PERSISTTIMEO, TCP_STAT_PERSISTDROPS,
484 "\t%" PRIu64 " persist timeout%s (resulting in %" PRIu64 " dropped "
485 "connection%s)\n");
486 p(TCP_STAT_KEEPTIMEO, "\t%" PRIu64 " keepalive timeout%s\n");
487 p(TCP_STAT_KEEPPROBE, "\t\t%" PRIu64 " keepalive probe%s sent\n");
488 p(TCP_STAT_KEEPDROPS,
489 "\t\t%" PRIu64 " connection%s dropped by keepalive\n");
490 p(TCP_STAT_PREDACK, "\t%" PRIu64 " correct ACK header prediction%s\n");
491 p(TCP_STAT_PREDDAT,
492 "\t%" PRIu64 " correct data packet header prediction%s\n");
493 p3(TCP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n");
494 ps(TCP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n");
495 p(TCP_STAT_CONNSDRAINED,
496 "\t%" PRIu64 " connection%s drained due to memory shortage\n");
497 p(TCP_STAT_PMTUBLACKHOLE,
498 "\t%" PRIu64 " PMTUD blackhole%s detected\n");
499
500 p(TCP_STAT_BADSYN, "\t%" PRIu64 " bad connection attempt%s\n");
501 ps(TCP_STAT_SC_ADDED, "\t%" PRIu64 " SYN cache entries added\n");
502 p(TCP_STAT_SC_COLLISIONS, "\t\t%" PRIu64 " hash collision%s\n");
503 ps(TCP_STAT_SC_COMPLETED, "\t\t%" PRIu64 " completed\n");
504 ps(TCP_STAT_SC_ABORTED,
505 "\t\t%" PRIu64 " aborted (no space to build PCB)\n");
506 ps(TCP_STAT_SC_TIMED_OUT, "\t\t%" PRIu64 " timed out\n");
507 ps(TCP_STAT_SC_OVERFLOWED,
508 "\t\t%" PRIu64 " dropped due to overflow\n");
509 ps(TCP_STAT_SC_BUCKETOVERFLOW,
510 "\t\t%" PRIu64 " dropped due to bucket overflow\n");
511 ps(TCP_STAT_SC_RESET, "\t\t%" PRIu64 " dropped due to RST\n");
512 ps(TCP_STAT_SC_UNREACH,
513 "\t\t%" PRIu64 " dropped due to ICMP unreachable\n");
514 ps(TCP_STAT_SC_DELAYED_FREE,
515 "\t\t%" PRIu64 " delayed free of SYN cache entries\n");
516 p(TCP_STAT_SC_RETRANSMITTED,
517 "\t%" PRIu64 " SYN,ACK%s retransmitted\n");
518 p(TCP_STAT_SC_DUPESYN,
519 "\t%" PRIu64 " duplicate SYN%s received for entries "
520 "already in the cache\n");
521 p(TCP_STAT_SC_DROPPED,
522 "\t%" PRIu64 " SYN%s dropped (no route or no space)\n");
523 p(TCP_STAT_BADSIG, "\t%" PRIu64 " packet%s with bad signature\n");
524 p(TCP_STAT_GOODSIG, "\t%" PRIu64 " packet%s with good signature\n");
525
526 p(TCP_STAT_ECN_SHS, "\t%" PRIu64 " successful ECN handshake%s\n");
527 p(TCP_STAT_ECN_CE, "\t%" PRIu64 " packet%s with ECN CE bit\n");
528 p(TCP_STAT_ECN_ECT, "\t%" PRIu64 " packet%s ECN ECT(0) bit\n");
529 #undef p
530 #undef ps
531 #undef p2
532 #undef p2s
533 #undef p3
534 show_vtw_stats();
535 }
536
537 /*
538 * Dump UDP statistics structure.
539 */
540 void
udp_stats(u_long off,const char * name)541 udp_stats(u_long off, const char *name)
542 {
543 uint64_t udpstat[UDP_NSTATS];
544 uint64_t delivered;
545
546 if (use_sysctl) {
547 size_t size = sizeof(udpstat);
548
549 if (prog_sysctlbyname("net.inet.udp.stats", udpstat, &size,
550 NULL, 0) == -1 && errno != ENOMEM)
551 return;
552 } else {
553 warnx("%s stats not available via KVM.", name);
554 return;
555 }
556
557 printf ("%s:\n", name);
558
559 #define ps(f, m) if (udpstat[f] || sflag <= 1) \
560 printf(m, udpstat[f])
561 #define p(f, m) if (udpstat[f] || sflag <= 1) \
562 printf(m, udpstat[f], plural(udpstat[f]))
563 #define p3(f, m) if (udpstat[f] || sflag <= 1) \
564 printf(m, udpstat[f], plurales(udpstat[f]))
565
566 p(UDP_STAT_IPACKETS, "\t%" PRIu64 " datagram%s received\n");
567 ps(UDP_STAT_HDROPS, "\t%" PRIu64 " with incomplete header\n");
568 ps(UDP_STAT_BADLEN, "\t%" PRIu64 " with bad data length field\n");
569 ps(UDP_STAT_BADSUM, "\t%" PRIu64 " with bad checksum\n");
570 ps(UDP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n");
571 p(UDP_STAT_NOPORTBCAST, "\t%" PRIu64
572 " broadcast/multicast datagram%s dropped due to no socket\n");
573 ps(UDP_STAT_FULLSOCK, "\t%" PRIu64
574 " dropped due to full socket buffers\n");
575 delivered = udpstat[UDP_STAT_IPACKETS] -
576 udpstat[UDP_STAT_HDROPS] -
577 udpstat[UDP_STAT_BADLEN] -
578 udpstat[UDP_STAT_BADSUM] -
579 udpstat[UDP_STAT_NOPORT] -
580 udpstat[UDP_STAT_NOPORTBCAST] -
581 udpstat[UDP_STAT_FULLSOCK];
582 if (delivered || sflag <= 1)
583 printf("\t%" PRIu64 " delivered\n", delivered);
584 p3(UDP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n");
585 p(UDP_STAT_OPACKETS, "\t%" PRIu64 " datagram%s output\n");
586
587 #undef ps
588 #undef p
589 #undef p3
590 }
591
592 /*
593 * Dump IP statistics structure.
594 */
595 void
ip_stats(u_long off,const char * name)596 ip_stats(u_long off, const char *name)
597 {
598 uint64_t ipstat[IP_NSTATS];
599
600 if (use_sysctl) {
601 size_t size = sizeof(ipstat);
602
603 if (prog_sysctlbyname("net.inet.ip.stats", ipstat, &size,
604 NULL, 0) == -1 && errno != ENOMEM)
605 return;
606 } else {
607 warnx("%s stats not available via KVM.", name);
608 return;
609 }
610
611 printf("%s:\n", name);
612
613 #define ps(f, m) if (ipstat[f] || sflag <= 1) \
614 printf(m, ipstat[f])
615 #define p(f, m) if (ipstat[f] || sflag <= 1) \
616 printf(m, ipstat[f], plural(ipstat[f]))
617
618 p(IP_STAT_TOTAL, "\t%" PRIu64 " total packet%s received\n");
619 p(IP_STAT_BADSUM, "\t%" PRIu64 " bad header checksum%s\n");
620 ps(IP_STAT_TOOSMALL, "\t%" PRIu64 " with size smaller than minimum\n");
621 ps(IP_STAT_TOOSHORT, "\t%" PRIu64 " with data size < data length\n");
622 ps(IP_STAT_TOOLONG,
623 "\t%" PRIu64 " with length > max ip packet size\n");
624 ps(IP_STAT_BADHLEN, "\t%" PRIu64 " with header length < data size\n");
625 ps(IP_STAT_BADLEN, "\t%" PRIu64 " with data length < header length\n");
626 ps(IP_STAT_BADOPTIONS, "\t%" PRIu64 " with bad options\n");
627 ps(IP_STAT_BADVERS, "\t%" PRIu64 " with incorrect version number\n");
628 p(IP_STAT_FRAGMENTS, "\t%" PRIu64 " fragment%s received\n");
629 p(IP_STAT_FRAGDROPPED,
630 "\t%" PRIu64 " fragment%s dropped (dup or out of space)\n");
631 p(IP_STAT_RCVMEMDROP,
632 "\t%" PRIu64 " fragment%s dropped (out of ipqent)\n");
633 p(IP_STAT_BADFRAGS, "\t%" PRIu64 " malformed fragment%s dropped\n");
634 p(IP_STAT_FRAGTIMEOUT,
635 "\t%" PRIu64 " fragment%s dropped after timeout\n");
636 p(IP_STAT_REASSEMBLED, "\t%" PRIu64 " packet%s reassembled ok\n");
637 p(IP_STAT_DELIVERED, "\t%" PRIu64 " packet%s for this host\n");
638 p(IP_STAT_NOPROTO,
639 "\t%" PRIu64 " packet%s for unknown/unsupported protocol\n");
640 p(IP_STAT_FORWARD, "\t%" PRIu64 " packet%s forwarded");
641 p(IP_STAT_FASTFORWARD, " (%" PRIu64 " packet%s fast forwarded)");
642 if (ipstat[IP_STAT_FORWARD] || sflag <= 1)
643 putchar('\n');
644 p(IP_STAT_CANTFORWARD, "\t%" PRIu64 " packet%s not forwardable\n");
645 p(IP_STAT_REDIRECTSENT, "\t%" PRIu64 " redirect%s sent\n");
646 p(IP_STAT_NOGIF, "\t%" PRIu64 " packet%s no matching gif found\n");
647 p(IP_STAT_NOIPSEC,
648 "\t%" PRIu64 " packet%s no matching ipsecif found\n");
649 p(IP_STAT_LOCALOUT, "\t%" PRIu64 " packet%s sent from this host\n");
650 p(IP_STAT_RAWOUT,
651 "\t%" PRIu64 " packet%s sent with fabricated ip header\n");
652 p(IP_STAT_ODROPPED,
653 "\t%" PRIu64 " output packet%s dropped due to no bufs, etc.\n");
654 p(IP_STAT_NOROUTE,
655 "\t%" PRIu64 " output packet%s discarded due to no route\n");
656 p(IP_STAT_FRAGMENTED, "\t%" PRIu64 " output datagram%s fragmented\n");
657 p(IP_STAT_OFRAGMENTS, "\t%" PRIu64 " fragment%s created\n");
658 p(IP_STAT_CANTFRAG,
659 "\t%" PRIu64 " datagram%s that can't be fragmented\n");
660 p(IP_STAT_BADADDR,
661 "\t%" PRIu64 " datagram%s with bad address in header\n");
662 p(IP_STAT_PFILDROP_IN,
663 "\t%" PRIu64 " input packet%s dropped by pfil\n");
664 p(IP_STAT_PFILDROP_OUT,
665 "\t%" PRIu64 " output packet%s dropped by pfil\n");
666 p(IP_STAT_IPSECDROP_IN,
667 "\t%" PRIu64 " input packet%s dropped by IPsec\n");
668 p(IP_STAT_IPSECDROP_OUT,
669 "\t%" PRIu64 " output packet%s dropped by IPsec\n");
670 p(IP_STAT_IFDROP,
671 "\t%" PRIu64 " input packet%s dropped due to interface state\n");
672 p(IP_STAT_TIMXCEED,
673 "\t%" PRIu64 " packet%s dropped due to TTL exceeded\n");
674 p(IP_STAT_IFNOADDR,
675 "\t%" PRIu64 " output packet%s dropped (no IP address)\n");
676 p(IP_STAT_RTREJECT,
677 "\t%" PRIu64 " output packet%s discarded due to reject route\n");
678 p(IP_STAT_BCASTDENIED,
679 "\t%" PRIu64 " output packet%s dropped (broadcast prohibited)\n");
680 #undef ps
681 #undef p
682 }
683
684 /*
685 * Dump ICMP statistics.
686 */
687 void
icmp_stats(u_long off,const char * name)688 icmp_stats(u_long off, const char *name)
689 {
690 uint64_t icmpstat[ICMP_NSTATS];
691 int i, first;
692
693 if (use_sysctl) {
694 size_t size = sizeof(icmpstat);
695
696 if (prog_sysctlbyname("net.inet.icmp.stats", icmpstat, &size,
697 NULL, 0) == -1 && errno != ENOMEM)
698 return;
699 } else {
700 warnx("%s stats not available via KVM.", name);
701 return;
702 }
703
704 printf("%s:\n", name);
705
706 #define p(f, m) if (icmpstat[f] || sflag <= 1) \
707 printf(m, icmpstat[f], plural(icmpstat[f]))
708
709 p(ICMP_STAT_ERROR, "\t%" PRIu64 " call%s to icmp_error\n");
710 p(ICMP_STAT_OLDICMP, "\t%" PRIu64
711 " error%s not generated because old message was icmp\n");
712 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
713 if (icmpstat[ICMP_STAT_OUTHIST + i] != 0) {
714 if (first) {
715 printf("\tOutput histogram:\n");
716 first = 0;
717 }
718 printf("\t\t%s: %" PRIu64 "\n", icmp_type[i],
719 icmpstat[ICMP_STAT_OUTHIST + i]);
720 }
721 p(ICMP_STAT_BADCODE, "\t%" PRIu64 " message%s with bad code fields\n");
722 p(ICMP_STAT_TOOSHORT, "\t%" PRIu64 " message%s < minimum length\n");
723 p(ICMP_STAT_CHECKSUM, "\t%" PRIu64 " bad checksum%s\n");
724 p(ICMP_STAT_BADLEN, "\t%" PRIu64 " message%s with bad length\n");
725 p(ICMP_STAT_BMCASTECHO,
726 "\t%" PRIu64 " multicast echo request%s ignored\n");
727 p(ICMP_STAT_BMCASTTSTAMP,
728 "\t%" PRIu64 " multicast timestamp request%s ignored\n");
729 for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
730 if (icmpstat[ICMP_STAT_INHIST + i] != 0) {
731 if (first) {
732 printf("\tInput histogram:\n");
733 first = 0;
734 }
735 printf("\t\t%s: %" PRIu64 "\n", icmp_type[i],
736 icmpstat[ICMP_STAT_INHIST + i]);
737 }
738 p(ICMP_STAT_REFLECT, "\t%" PRIu64 " message response%s generated\n");
739 p(ICMP_STAT_PMTUCHG, "\t%" PRIu64 " path MTU change%s\n");
740 #undef p
741 }
742
743 /*
744 * Dump IGMP statistics structure.
745 */
746 void
igmp_stats(u_long off,const char * name)747 igmp_stats(u_long off, const char *name)
748 {
749 uint64_t igmpstat[IGMP_NSTATS];
750
751 if (use_sysctl) {
752 size_t size = sizeof(igmpstat);
753
754 if (prog_sysctlbyname("net.inet.igmp.stats", igmpstat, &size,
755 NULL, 0) == -1 && errno != ENOMEM)
756 return;
757 } else {
758 warnx("%s stats not available via KVM.", name);
759 return;
760 }
761
762 printf("%s:\n", name);
763
764 #define p(f, m) if (igmpstat[f] || sflag <= 1) \
765 printf(m, igmpstat[f], plural(igmpstat[f]))
766 #define py(f, m) if (igmpstat[f] || sflag <= 1) \
767 printf(m, igmpstat[f], igmpstat[f] != 1 ? "ies" : "y")
768
769 p(IGMP_STAT_RCV_TOTAL, "\t%" PRIu64 " message%s received\n");
770 p(IGMP_STAT_RCV_TOOSHORT,
771 "\t%" PRIu64 " message%s received with too few bytes\n");
772 p(IGMP_STAT_RCV_BADSUM,
773 "\t%" PRIu64 " message%s received with bad checksum\n");
774 py(IGMP_STAT_RCV_QUERIES,
775 "\t%" PRIu64 " membership quer%s received\n");
776 py(IGMP_STAT_RCV_BADQUERIES,
777 "\t%" PRIu64 " membership quer%s received with invalid field(s)\n");
778 p(IGMP_STAT_RCV_REPORTS,
779 "\t%" PRIu64 " membership report%s received\n");
780 p(IGMP_STAT_RCV_BADREPORTS, "\t%" PRIu64
781 " membership report%s received with invalid field(s)\n");
782 p(IGMP_STAT_RCV_OURREPORTS, "\t%" PRIu64
783 " membership report%s received for groups to which we belong\n");
784 p(IGMP_STAT_SND_REPORTS,
785 "\t%" PRIu64 " membership report%s sent\n");
786 #undef p
787 #undef py
788 }
789
790 /*
791 * Dump CARP statistics structure.
792 */
793 void
carp_stats(u_long off,const char * name)794 carp_stats(u_long off, const char *name)
795 {
796 uint64_t carpstat[CARP_NSTATS];
797
798 if (use_sysctl) {
799 size_t size = sizeof(carpstat);
800
801 if (prog_sysctlbyname("net.inet.carp.stats", carpstat, &size,
802 NULL, 0) == -1 && errno != ENOMEM)
803 return;
804 } else {
805 warnx("%s stats not available via KVM.", name);
806 return;
807 }
808
809 printf("%s:\n", name);
810
811 #define p(f, m) if (carpstat[f] || sflag <= 1) \
812 printf(m, carpstat[f], plural(carpstat[f]))
813 #define p2(f, m) if (carpstat[f] || sflag <= 1) \
814 printf(m, carpstat[f])
815
816 p(CARP_STAT_IPACKETS, "\t%" PRIu64 " packet%s received (IPv4)\n");
817 p(CARP_STAT_IPACKETS6, "\t%" PRIu64 " packet%s received (IPv6)\n");
818 p(CARP_STAT_BADIF,
819 "\t\t%" PRIu64 " packet%s discarded for bad interface\n");
820 p(CARP_STAT_BADTTL,
821 "\t\t%" PRIu64 " packet%s discarded for wrong TTL\n");
822 p(CARP_STAT_HDROPS, "\t\t%" PRIu64 " packet%s shorter than header\n");
823 p(CARP_STAT_BADSUM,
824 "\t\t%" PRIu64 " packet%s discarded for bad checksum\n");
825 p(CARP_STAT_BADVER,
826 "\t\t%" PRIu64 " packet%s discarded with a bad version\n");
827 p2(CARP_STAT_BADLEN,
828 "\t\t%" PRIu64 " discarded because packet was too short\n");
829 p(CARP_STAT_BADAUTH,
830 "\t\t%" PRIu64 " packet%s discarded for bad authentication\n");
831 p(CARP_STAT_BADVHID,
832 "\t\t%" PRIu64 " packet%s discarded for bad vhid\n");
833 p(CARP_STAT_BADADDRS, "\t\t%" PRIu64
834 " packet%s discarded because of a bad address list\n");
835 p(CARP_STAT_OPACKETS, "\t%" PRIu64 " packet%s sent (IPv4)\n");
836 p(CARP_STAT_OPACKETS6, "\t%" PRIu64 " packet%s sent (IPv6)\n");
837 p2(CARP_STAT_ONOMEM,
838 "\t\t%" PRIu64 " send failed due to mbuf memory error\n");
839 #undef p
840 #undef p2
841 }
842
843 /*
844 * Dump PIM statistics structure.
845 */
846 void
pim_stats(u_long off,const char * name)847 pim_stats(u_long off, const char *name)
848 {
849 struct pimstat pimstat;
850
851 if (off == 0)
852 return;
853 if (kread(off, (char *)&pimstat, sizeof (pimstat)) != 0) {
854 /* XXX: PIM is probably not enabled in the kernel */
855 return;
856 }
857
858 printf("%s:\n", name);
859
860 #define p(f, m) if (pimstat.f || sflag <= 1) \
861 printf(m, pimstat.f, plural(pimstat.f))
862
863 p(pims_rcv_total_msgs, "\t%" PRIu64 " message%s received\n");
864 p(pims_rcv_total_bytes, "\t%" PRIu64 " byte%s received\n");
865 p(pims_rcv_tooshort,
866 "\t%" PRIu64 " message%s received with too few bytes\n");
867 p(pims_rcv_badsum,
868 "\t%" PRIu64 " message%s received with bad checksum\n");
869 p(pims_rcv_badversion,
870 "\t%" PRIu64 " message%s received with bad version\n");
871 p(pims_rcv_registers_msgs,
872 "\t%" PRIu64 " data register message%s received\n");
873 p(pims_rcv_registers_bytes,
874 "\t%" PRIu64 " data register byte%s received\n");
875 p(pims_rcv_registers_wrongiif,
876 "\t%" PRIu64 " data register message%s received on wrong iif\n");
877 p(pims_rcv_badregisters,
878 "\t%" PRIu64 " bad register%s received\n");
879 p(pims_snd_registers_msgs,
880 "\t%" PRIu64 " data register message%s sent\n");
881 p(pims_snd_registers_bytes,
882 "\t%" PRIu64 " data register byte%s sent\n");
883 #undef p
884 }
885
886 /*
887 * Dump the ARP statistics structure.
888 */
889 void
arp_stats(u_long off,const char * name)890 arp_stats(u_long off, const char *name)
891 {
892 uint64_t arpstat[ARP_NSTATS];
893
894 if (use_sysctl) {
895 size_t size = sizeof(arpstat);
896
897 if (prog_sysctlbyname("net.inet.arp.stats", arpstat, &size,
898 NULL, 0) == -1 && errno != ENOMEM)
899 return;
900 } else {
901 warnx("%s stats not available via KVM.", name);
902 return;
903 }
904
905 printf("%s:\n", name);
906
907 #define ps(f, m) if (arpstat[f] || sflag <= 1) \
908 printf(m, arpstat[f])
909 #define p(f, m) if (arpstat[f] || sflag <= 1) \
910 printf(m, arpstat[f], plural(arpstat[f]))
911
912 p(ARP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n");
913 p(ARP_STAT_SNDREPLY, "\t\t%" PRIu64 " reply packet%s\n");
914 p(ARP_STAT_SENDREQUEST, "\t\t%" PRIu64 " request packet%s\n");
915
916 p(ARP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n");
917 p(ARP_STAT_RCVREPLY, "\t\t%" PRIu64 " reply packet%s\n");
918 p(ARP_STAT_RCVREQUEST, "\t\t%" PRIu64 " valid request packet%s\n");
919 p(ARP_STAT_RCVMCAST, "\t\t%" PRIu64 " broadcast/multicast packet%s\n");
920 p(ARP_STAT_RCVBADPROTO,
921 "\t\t%" PRIu64 " packet%s with unknown protocol type\n");
922 p(ARP_STAT_RCVBADLEN,
923 "\t\t%" PRIu64 " packet%s with bad (short) length\n");
924 p(ARP_STAT_RCVZEROTPA,
925 "\t\t%" PRIu64 " packet%s with null target IP address\n");
926 p(ARP_STAT_RCVZEROSPA,
927 "\t\t%" PRIu64 " packet%s with null source IP address\n");
928 ps(ARP_STAT_RCVNOINT,
929 "\t\t%" PRIu64 " could not be mapped to an interface\n");
930 p(ARP_STAT_RCVLOCALSHA,
931 "\t\t%" PRIu64 " packet%s sourced from a local hardware "
932 "address\n");
933 p(ARP_STAT_RCVBCASTSHA, "\t\t%" PRIu64 " packet%s with a broadcast "
934 "source hardware address\n");
935 p(ARP_STAT_RCVLOCALSPA,
936 "\t\t%" PRIu64 " duplicate%s for a local IP address\n");
937 p(ARP_STAT_RCVOVERPERM,
938 "\t\t%" PRIu64 " attempt%s to overwrite a static entry\n");
939 p(ARP_STAT_RCVOVERINT,
940 "\t\t%" PRIu64 " packet%s received on wrong interface\n");
941 p(ARP_STAT_RCVOVER, "\t\t%" PRIu64 " entry%s overwritten\n");
942 p(ARP_STAT_RCVLENCHG,
943 "\t\t%" PRIu64 " change%s in hardware address length\n");
944
945 p(ARP_STAT_DFRTOTAL,
946 "\t%" PRIu64 " packet%s deferred pending ARP resolution\n");
947 ps(ARP_STAT_DFRSENT, "\t\t%" PRIu64 " sent\n");
948 ps(ARP_STAT_DFRDROPPED, "\t\t%" PRIu64 " dropped\n");
949
950 p(ARP_STAT_ALLOCFAIL, "\t%" PRIu64 " failure%s to allocate llinfo\n");
951
952 #undef ps
953 #undef p
954 }
955
956 /*
957 * Pretty print an Internet address (net address + port).
958 * Take numeric_addr and numeric_port into consideration.
959 */
960 void
inetprint(struct in_addr * in,uint16_t port,const char * proto,int port_numeric)961 inetprint(struct in_addr *in, uint16_t port, const char *proto,
962 int port_numeric)
963 {
964 struct servent *sp = 0;
965 char line[80], *cp;
966 size_t space;
967
968 (void)snprintf(line, sizeof line, "%.*s.",
969 (Aflag && !numeric_addr) ? 12 : 16, inetname(in));
970 cp = strchr(line, '\0');
971 if (!port_numeric && port)
972 sp = getservbyport((int)port, proto);
973 space = sizeof line - (cp-line);
974 if (sp || port == 0)
975 (void)snprintf(cp, space, "%s", sp ? sp->s_name : "*");
976 else
977 (void)snprintf(cp, space, "%u", ntohs(port));
978 (void)printf(" %-*.*s", width, width, line);
979 }
980
981 /*
982 * Construct an Internet address representation.
983 * If numeric_addr has been supplied, give
984 * numeric value, otherwise try for symbolic name.
985 */
986 char *
inetname(struct in_addr * inp)987 inetname(struct in_addr *inp)
988 {
989 char *cp;
990 static char line[50];
991 struct hostent *hp;
992 struct netent *np;
993 static char domain[MAXHOSTNAMELEN + 1];
994 static int first = 1;
995
996 if (first && !numeric_addr) {
997 first = 0;
998 if (gethostname(domain, sizeof domain) == 0) {
999 domain[sizeof(domain) - 1] = '\0';
1000 if ((cp = strchr(domain, '.')))
1001 (void) strlcpy(domain, cp + 1, sizeof(domain));
1002 else
1003 domain[0] = 0;
1004 } else
1005 domain[0] = 0;
1006 }
1007 cp = 0;
1008 if (!numeric_addr && inp->s_addr != INADDR_ANY) {
1009 int net = inet_netof(*inp);
1010 int lna = inet_lnaof(*inp);
1011
1012 if (lna == INADDR_ANY) {
1013 np = getnetbyaddr(net, AF_INET);
1014 if (np)
1015 cp = np->n_name;
1016 }
1017 if (cp == 0) {
1018 hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
1019 if (hp) {
1020 if ((cp = strchr(hp->h_name, '.')) &&
1021 !strcmp(cp + 1, domain))
1022 *cp = 0;
1023 cp = hp->h_name;
1024 }
1025 }
1026 }
1027 if (inp->s_addr == INADDR_ANY)
1028 strlcpy(line, "*", sizeof line);
1029 else if (cp)
1030 strlcpy(line, cp, sizeof line);
1031 else {
1032 inp->s_addr = ntohl(inp->s_addr);
1033 #define C(x) ((x) & 0xff)
1034 (void)snprintf(line, sizeof line, "%u.%u.%u.%u",
1035 C(inp->s_addr >> 24), C(inp->s_addr >> 16),
1036 C(inp->s_addr >> 8), C(inp->s_addr));
1037 #undef C
1038 }
1039 return line;
1040 }
1041
1042 /*
1043 * Dump the contents of a TCP PCB.
1044 */
1045 void
tcp_dump(u_long off,const char * name,u_long pcbaddr)1046 tcp_dump(u_long off, const char *name, u_long pcbaddr)
1047 {
1048 callout_impl_t *ci;
1049 struct tcpcb tcpcb;
1050 int i, hardticks;
1051 struct kinfo_pcb *pcblist;
1052 size_t j, len;
1053
1054 if (use_sysctl)
1055 pcblist = getpcblist_sysctl(name, &len);
1056 else
1057 pcblist = getpcblist_kmem(off, name, &len);
1058
1059 for (j = 0; j < len; j++)
1060 if (pcblist[j].ki_ppcbaddr == pcbaddr)
1061 break;
1062 free(pcblist);
1063
1064 if (j == len)
1065 errx(1, "0x%lx is not a valid pcb address", pcbaddr);
1066
1067 kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb));
1068 hardticks = get_hardticks();
1069
1070 printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr);
1071
1072 printf("Timers:\n");
1073 for (i = 0; i < TCPT_NTIMERS; i++) {
1074 char buf[128];
1075 ci = (callout_impl_t *)&tcpcb.t_timer[i];
1076 snprintb(buf, sizeof(buf), CALLOUT_FMT, ci->c_flags);
1077 printf("\t%s\t%s", tcptimers[i], buf);
1078 if (ci->c_flags & CALLOUT_PENDING)
1079 printf("\t%d\n", ci->c_time - hardticks);
1080 else
1081 printf("\n");
1082 }
1083 printf("\n\n");
1084
1085 if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
1086 printf("State: %d", tcpcb.t_state);
1087 else
1088 printf("State: %s", tcpstates[tcpcb.t_state]);
1089 printf(", flags 0x%x, inpcb 0x%lx\n\n", tcpcb.t_flags,
1090 (u_long)tcpcb.t_inpcb);
1091
1092 printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift,
1093 tcpcb.t_rxtcur, tcpcb.t_dupacks);
1094 printf("peermss %u, ourmss %u, segsz %u, segqlen %u\n\n",
1095 tcpcb.t_peermss, tcpcb.t_ourmss, tcpcb.t_segsz, tcpcb.t_segqlen);
1096
1097 printf("snd_una %u, snd_nxt %u, snd_up %u\n",
1098 tcpcb.snd_una, tcpcb.snd_nxt, tcpcb.snd_up);
1099 printf("snd_wl1 %u, snd_wl2 %u, iss %u, snd_wnd %lu\n\n",
1100 tcpcb.snd_wl1, tcpcb.snd_wl2, tcpcb.iss, tcpcb.snd_wnd);
1101
1102 printf("rcv_wnd %lu, rcv_nxt %u, rcv_up %u, irs %u\n\n",
1103 tcpcb.rcv_wnd, tcpcb.rcv_nxt, tcpcb.rcv_up, tcpcb.irs);
1104
1105 printf("rcv_adv %u, snd_max %u, snd_cwnd %lu, snd_ssthresh %lu\n",
1106 tcpcb.rcv_adv, tcpcb.snd_max, tcpcb.snd_cwnd, tcpcb.snd_ssthresh);
1107
1108 printf("rcvtime %u, rtttime %u, rtseq %u, srtt %d, rttvar %d, "
1109 "rttmin %d, max_sndwnd %lu\n\n", tcpcb.t_rcvtime, tcpcb.t_rtttime,
1110 tcpcb.t_rtseq, tcpcb.t_srtt, tcpcb.t_rttvar, tcpcb.t_rttmin,
1111 tcpcb.max_sndwnd);
1112
1113 printf("oobflags %d, iobc %d, softerror %d\n\n", tcpcb.t_oobflags,
1114 tcpcb.t_iobc, tcpcb.t_softerror);
1115
1116 printf("snd_scale %d, rcv_scale %d, req_r_scale %d, req_s_scale %d\n",
1117 tcpcb.snd_scale, tcpcb.rcv_scale, tcpcb.request_r_scale,
1118 tcpcb.requested_s_scale);
1119 printf("ts_recent %u, ts_regent_age %d, last_ack_sent %u\n",
1120 tcpcb.ts_recent, tcpcb.ts_recent_age, tcpcb.last_ack_sent);
1121 }
1122