2 * Copyright (c) 1983, 1988, 1993
3 * Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 char const copyright[] =
36 "@(#) Copyright (c) 1983, 1988, 1993\n\
37 Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
51 #include <sys/protosw.h>
52 #include <sys/socket.h>
53 #include <sys/socketvar.h>
55 #include <netinet/in.h>
58 #include <netgraph/ng_socket.h>
76 static struct nlist nl[] = {
78 { .n_name = "_ifnet" },
80 { .n_name = "_rtstat" },
82 { .n_name = "_rt_tables"},
84 { .n_name = "_mrtstat" },
86 { .n_name = "_mfctable" },
88 { .n_name = "_viftable" },
90 { .n_name = "_ipxpcb_list"},
92 { .n_name = "_ipxstat"},
94 { .n_name = "_spx_istat"},
96 { .n_name = "_ddpstat"},
98 { .n_name = "_ddpcb"},
100 { .n_name = "_ngsocklist"},
102 { .n_name = "_ip6stat" },
103 #define N_ICMP6STAT 13
104 { .n_name = "_icmp6stat" },
105 #define N_IPSECSTAT 14
106 { .n_name = "_ipsec4stat" },
107 #define N_IPSEC6STAT 15
108 { .n_name = "_ipsec6stat" },
109 #define N_PIM6STAT 16
110 { .n_name = "_pim6stat" },
111 #define N_MRT6STAT 17
112 { .n_name = "_mrt6stat" },
113 #define N_MF6CTABLE 18
114 { .n_name = "_mf6ctable" },
115 #define N_MIF6TABLE 19
116 { .n_name = "_mif6table" },
117 #define N_PFKEYSTAT 20
118 { .n_name = "_pfkeystat" },
120 { .n_name = "_mbstat" },
122 { .n_name = "_mbtypes" },
123 #define N_NMBCLUSTERS 23
124 { .n_name = "_nmbclusters" },
126 { .n_name = "_nmbufs" },
128 { .n_name = "_mbuf_hiwm" },
130 { .n_name = "_clust_hiwm" },
132 { .n_name = "_smp_cpus" },
134 { .n_name = "_pagesize" },
136 { .n_name = "_mb_statpcpu" },
138 { .n_name = "_rttrash" },
140 { .n_name = "_mbuf_lowm" },
142 { .n_name = "_clust_lowm" },
143 #define N_CARPSTAT 33
144 { .n_name = "_carpstats" },
145 #define N_PFSYNCSTAT 34
146 { .n_name = "_pfsyncstats" },
148 { .n_name = "_ahstat" },
150 { .n_name = "_espstat" },
151 #define N_IPCOMPSTAT 37
152 { .n_name = "_ipcompstat" },
154 { .n_name = "_tcpstat" },
156 { .n_name = "_udpstat" },
158 { .n_name = "_ipstat" },
159 #define N_ICMPSTAT 41
160 { .n_name = "_icmpstat" },
161 #define N_IGMPSTAT 42
162 { .n_name = "_igmpstat" },
164 { .n_name = "_pimstat" },
166 { .n_name = "_tcbinfo" },
168 { .n_name = "_udbinfo" },
169 #define N_DIVCBINFO 46
170 { .n_name = "_divcbinfo" },
171 #define N_RIPCBINFO 47
172 { .n_name = "_ripcbinfo" },
173 #define N_UNP_COUNT 48
174 { .n_name = "_unp_count" },
175 #define N_UNP_GENCNT 49
176 { .n_name = "_unp_gencnt" },
177 #define N_UNP_DHEAD 50
178 { .n_name = "_unp_dhead" },
179 #define N_UNP_SHEAD 51
180 { .n_name = "_unp_shead" },
181 #define N_RIP6STAT 52
182 { .n_name = "_rip6stat" },
183 #define N_SCTPSTAT 53
184 { .n_name = "_sctpstat" },
189 int pr_index; /* index into nlist of cb head */
190 int pr_sindex; /* index into nlist of stat block */
191 u_char pr_wanted; /* 1 if wanted, 0 otherwise */
192 void (*pr_cblocks)(u_long, const char *, int, int);
193 /* control blocks printing routine */
194 void (*pr_stats)(u_long, const char *, int, int);
195 /* statistics printing routine */
196 void (*pr_istats)(char *); /* per/if statistics printing routine */
197 const char *pr_name; /* well-known name */
198 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */
201 { N_TCBINFO, N_TCPSTAT, 1, protopr,
202 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
203 { N_UDBINFO, N_UDPSTAT, 1, protopr,
204 udp_stats, NULL, "udp", 1, IPPROTO_UDP },
206 { -1, N_SCTPSTAT, 1, sctp_protopr,
207 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP },
209 { N_DIVCBINFO, -1, 1, protopr,
210 NULL, NULL, "divert", 1, IPPROTO_DIVERT },
211 { N_RIPCBINFO, N_IPSTAT, 1, protopr,
212 ip_stats, NULL, "ip", 1, IPPROTO_RAW },
213 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr,
214 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP },
215 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr,
216 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP },
218 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */
219 ipsec_stats, NULL, "ipsec", 0, 0},
220 { -1, N_AHSTAT, 1, NULL,
221 ah_stats, NULL, "ah", 0, 0},
222 { -1, N_ESPSTAT, 1, NULL,
223 esp_stats, NULL, "esp", 0, 0},
224 { -1, N_IPCOMPSTAT, 1, NULL,
225 ipcomp_stats, NULL, "ipcomp", 0, 0},
227 { N_RIPCBINFO, N_PIMSTAT, 1, protopr,
228 pim_stats, NULL, "pim", 1, IPPROTO_PIM },
229 { -1, N_CARPSTAT, 1, NULL,
230 carp_stats, NULL, "carp", 1, 0 },
231 { -1, N_PFSYNCSTAT, 1, NULL,
232 pfsync_stats, NULL, "pfsync", 1, 0 },
234 NULL, NULL, NULL, 0, 0 }
238 struct protox ip6protox[] = {
239 { N_TCBINFO, N_TCPSTAT, 1, protopr,
240 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
241 { N_UDBINFO, N_UDPSTAT, 1, protopr,
242 udp_stats, NULL, "udp", 1, IPPROTO_UDP },
243 { N_RIPCBINFO, N_IP6STAT, 1, protopr,
244 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW },
245 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr,
246 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 },
248 { -1, N_IPSEC6STAT, 1, NULL,
249 ipsec_stats, NULL, "ipsec6", 0, 0 },
252 { -1, N_PIM6STAT, 1, NULL,
253 pim6_stats, NULL, "pim6", 1, 0 },
255 { -1, N_RIP6STAT, 1, NULL,
256 rip6_stats, NULL, "rip6", 1, 0 },
258 NULL, NULL, NULL, 0, 0 }
263 struct protox pfkeyprotox[] = {
264 { -1, N_PFKEYSTAT, 1, NULL,
265 pfkey_stats, NULL, "pfkey", 0, 0 },
267 NULL, NULL, NULL, 0, 0 }
271 struct protox atalkprotox[] = {
272 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
273 ddp_stats, NULL, "ddp", 0, 0 },
275 NULL, NULL, NULL, 0, 0 }
278 struct protox netgraphprotox[] = {
279 { N_NGSOCKS, -1, 1, netgraphprotopr,
280 NULL, NULL, "ctrl", 0, 0 },
281 { N_NGSOCKS, -1, 1, netgraphprotopr,
282 NULL, NULL, "data", 0, 0 },
284 NULL, NULL, NULL, 0, 0 }
288 struct protox ipxprotox[] = {
289 { N_IPX, N_IPXSTAT, 1, ipxprotopr,
290 ipx_stats, NULL, "ipx", 0, 0 },
291 { N_IPX, N_SPXSTAT, 1, ipxprotopr,
292 spx_stats, NULL, "spx", 0, 0 },
294 NULL, NULL, 0, 0, 0 }
298 struct protox *protoprotox[] = {
311 static void printproto(struct protox *, const char *);
312 static void usage(void);
313 static struct protox *name2protox(const char *);
314 static struct protox *knownname(const char *);
317 static char *nlistf = NULL, *memf = NULL;
319 int Aflag; /* show addresses of protocol control block */
320 int aflag; /* show all sockets (including servers) */
321 int Bflag; /* show information about bpf consumers */
322 int bflag; /* show i/f total bytes in/out */
323 int dflag; /* show i/f dropped packets */
324 int gflag; /* show group (multicast) routing or stats */
325 int hflag; /* show counters in human readable format */
326 int iflag; /* show interfaces */
327 int Lflag; /* show size of listen queues */
328 int mflag; /* show memory stats */
329 int numeric_addr; /* show addresses numerically */
330 int numeric_port; /* show ports numerically */
331 static int pflag; /* show given protocol */
332 int rflag; /* show routing tables (or routing stats) */
333 int sflag; /* show protocol statistics */
334 int tflag; /* show i/f watchdog timers */
335 int Wflag; /* wide display */
336 int zflag; /* zero stats */
338 int interval; /* repeat interval for i/f stats */
340 char *interface; /* desired i/f for stats, or NULL for all i/fs */
341 int unit; /* unit number for above */
343 int af; /* address family */
344 int live; /* true if we are examining a live system */
347 main(int argc, char *argv[])
349 struct protox *tp = NULL; /* for printing cblocks & stats */
354 while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:rSstuWw:z")) != -1)
372 if (strcmp(optarg, "ipx") == 0)
374 else if (strcmp(optarg, "inet") == 0)
377 else if (strcmp(optarg, "inet6") == 0)
381 else if (strcmp(optarg, "pfkey") == 0)
384 else if (strcmp(optarg, "unix") == 0)
386 else if (strcmp(optarg, "atalk") == 0)
389 else if (strcmp(optarg, "ng") == 0
390 || strcmp(optarg, "netgraph") == 0)
393 else if (strcmp(optarg, "link") == 0)
396 errx(1, "%s: unknown address family", optarg);
409 for (cp = interface = optarg; isalpha(*cp); cp++)
430 numeric_addr = numeric_port = 1;
433 if ((tp = name2protox(optarg)) == NULL) {
435 "%s: unknown or uninstrumented protocol",
460 interval = atoi(optarg);
473 #define BACKWARD_COMPATIBILITY
474 #ifdef BACKWARD_COMPATIBILITY
476 if (isdigit(**argv)) {
477 interval = atoi(*argv);
492 * Discard setgid privileges if not the running kernel so that bad
493 * guys can't print interesting stuff from kernel memory.
495 live = (nlistf == NULL && memf == NULL);
502 bpf_stats(interface);
507 if (kread(0, NULL, 0) == 0)
508 mbpr(kvmd, nl[N_MBSTAT].n_value);
515 * Keep file descriptors open to avoid overhead
516 * of open/close on each call to get* routines.
522 * This does not make sense any more with DNS being default over
523 * the files. Doing a setXXXXent(1) causes a tcp connection to be
524 * used for the queries, which is slower.
528 if (iflag && !sflag) {
529 intpr(interval, nl[N_IFNET].n_value, NULL);
534 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value);
536 routepr(nl[N_RTREE].n_value);
541 if (af == AF_INET || af == AF_UNSPEC)
542 mrt_stats(nl[N_MRTSTAT].n_value);
544 if (af == AF_INET6 || af == AF_UNSPEC)
545 mrt6_stats(nl[N_MRT6STAT].n_value);
548 if (af == AF_INET || af == AF_UNSPEC)
549 mroutepr(nl[N_MFCTABLE].n_value,
550 nl[N_VIFTABLE].n_value);
552 if (af == AF_INET6 || af == AF_UNSPEC)
553 mroute6pr(nl[N_MF6CTABLE].n_value,
554 nl[N_MIF6TABLE].n_value);
562 printproto(tp, tp->pr_name);
565 if (af == AF_INET || af == AF_UNSPEC)
566 for (tp = protox; tp->pr_name; tp++)
567 printproto(tp, tp->pr_name);
569 if (af == AF_INET6 || af == AF_UNSPEC)
570 for (tp = ip6protox; tp->pr_name; tp++)
571 printproto(tp, tp->pr_name);
574 if (af == PF_KEY || af == AF_UNSPEC)
575 for (tp = pfkeyprotox; tp->pr_name; tp++)
576 printproto(tp, tp->pr_name);
579 if (af == AF_IPX || af == AF_UNSPEC) {
580 for (tp = ipxprotox; tp->pr_name; tp++)
581 printproto(tp, tp->pr_name);
584 if (af == AF_APPLETALK || af == AF_UNSPEC)
585 for (tp = atalkprotox; tp->pr_name; tp++)
586 printproto(tp, tp->pr_name);
588 if (af == AF_NETGRAPH || af == AF_UNSPEC)
589 for (tp = netgraphprotox; tp->pr_name; tp++)
590 printproto(tp, tp->pr_name);
591 #endif /* NETGRAPH */
592 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
593 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value,
594 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value);
599 * Print out protocol statistics or control blocks (per sflag).
600 * If the interface was not specifically requested, and the symbol
601 * is not in the namelist, ignore this one.
608 void (*pr)(u_long, const char *, int, int);
614 intpr(interval, nl[N_IFNET].n_value,
617 printf("%s: no per-interface stats routine\n",
624 printf("%s: no stats routine\n",
628 if (tp->pr_usesysctl && live)
630 else if (tp->pr_sindex < 0) {
633 "%s: stats routine doesn't work on cores\n",
637 off = nl[tp->pr_sindex].n_value;
643 printf("%s: no PCB routine\n", tp->pr_name);
646 if (tp->pr_usesysctl && live)
648 else if (tp->pr_index < 0) {
651 "%s: PCB routine doesn't work on cores\n",
655 off = nl[tp->pr_index].n_value;
657 if (pr != NULL && (off || (live && tp->pr_usesysctl) ||
659 (*pr)(off, name, af, tp->pr_protocol);
663 * Read kernel memory, return 0 on success.
666 kread(u_long addr, void *buf, size_t size)
668 char errbuf[_POSIX2_LINE_MAX];
671 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
674 if (kvm_nlist(kvmd, nl) < 0) {
676 errx(1, "%s: kvm_nlist: %s", nlistf,
679 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
682 if (nl[0].n_type == 0) {
684 errx(1, "%s: no namelist", nlistf);
686 errx(1, "no namelist");
689 warnx("kvm not available: %s", errbuf);
695 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) {
696 warnx("%s", kvm_geterr(kvmd));
705 return (n != 1 ? "s" : "");
709 plurales(uintmax_t n)
711 return (n != 1 ? "es" : "");
715 pluralies(uintmax_t n)
717 return (n != 1 ? "ies" : "y");
721 * Find the protox for the given "well-known" name.
723 static struct protox *
724 knownname(const char *name)
726 struct protox **tpp, *tp;
728 for (tpp = protoprotox; *tpp; tpp++)
729 for (tp = *tpp; tp->pr_name; tp++)
730 if (strcmp(tp->pr_name, name) == 0)
736 * Find the protox corresponding to name.
738 static struct protox *
739 name2protox(const char *name)
742 char **alias; /* alias from p->aliases */
746 * Try to find the name in the list of "well-known" names. If that
747 * fails, check if name is an alias for an Internet protocol.
749 if ((tp = knownname(name)) != NULL)
752 setprotoent(1); /* make protocol lookup cheaper */
753 while ((p = getprotoent()) != NULL) {
754 /* assert: name not same as p->name */
755 for (alias = p->p_aliases; *alias; alias++)
756 if (strcmp(name, *alias) == 0) {
758 return (knownname(p->p_name));
768 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n%s\n",
769 "usage: netstat [-AaLnSW] [-f protocol_family | -p protocol]\n"
770 " [-M core] [-N system]",
771 " netstat -i | -I interface [-abdhntW] [-f address_family]\n"
772 " [-M core] [-N system]",
773 " netstat -w wait [-I interface] [-d] [-M core] [-N system]",
774 " netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n"
775 " [-M core] [-N system]",
776 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n"
777 " [-M core] [-N system]",
778 " netstat -m [-M core] [-N system]",
779 " netstat -B [-I interface]",
780 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]",
781 " netstat -rs [-s] [-M core] [-N system]",
782 " netstat -g [-W] [-f address_family] [-M core] [-N system]",
783 " netstat -gs [-s] [-f address_family] [-M core] [-N system]");