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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
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
31 char const copyright[] =
32 "@(#) Copyright (c) 1983, 1988, 1993\n\
33 Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)main.c 8.4 (Berkeley) 3/1/94";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/param.h>
47 #include <sys/protosw.h>
48 #include <sys/socket.h>
49 #include <sys/socketvar.h>
51 #include <netinet/in.h>
54 #include <netgraph/ng_socket.h>
72 static struct nlist nl[] = {
74 { .n_name = "_ifnet" },
76 { .n_name = "_rtstat" },
78 { .n_name = "_rt_tables"},
80 { .n_name = "_mrtstat" },
81 #define N_MFCHASHTBL 4
82 { .n_name = "_mfchashtbl" },
84 { .n_name = "_viftable" },
86 { .n_name = "_ipxpcb_list"},
88 { .n_name = "_ipxstat"},
90 { .n_name = "_spx_istat"},
92 { .n_name = "_ddpstat"},
94 { .n_name = "_ddpcb"},
96 { .n_name = "_ngsocklist"},
98 { .n_name = "_ip6stat" },
99 #define N_ICMP6STAT 13
100 { .n_name = "_icmp6stat" },
101 #define N_IPSECSTAT 14
102 { .n_name = "_ipsec4stat" },
103 #define N_IPSEC6STAT 15
104 { .n_name = "_ipsec6stat" },
105 #define N_PIM6STAT 16
106 { .n_name = "_pim6stat" },
107 #define N_MRT6STAT 17
108 { .n_name = "_mrt6stat" },
109 #define N_MF6CTABLE 18
110 { .n_name = "_mf6ctable" },
111 #define N_MIF6TABLE 19
112 { .n_name = "_mif6table" },
113 #define N_PFKEYSTAT 20
114 { .n_name = "_pfkeystat" },
116 { .n_name = "_mbstat" },
118 { .n_name = "_mbtypes" },
119 #define N_NMBCLUSTERS 23
120 { .n_name = "_nmbclusters" },
122 { .n_name = "_nmbufs" },
124 { .n_name = "_mbuf_hiwm" },
126 { .n_name = "_clust_hiwm" },
128 { .n_name = "_smp_cpus" },
130 { .n_name = "_pagesize" },
132 { .n_name = "_mb_statpcpu" },
134 { .n_name = "_rttrash" },
136 { .n_name = "_mbuf_lowm" },
138 { .n_name = "_clust_lowm" },
139 #define N_CARPSTAT 33
140 { .n_name = "_carpstats" },
141 #define N_PFSYNCSTAT 34
142 { .n_name = "_pfsyncstats" },
144 { .n_name = "_ahstat" },
146 { .n_name = "_espstat" },
147 #define N_IPCOMPSTAT 37
148 { .n_name = "_ipcompstat" },
150 { .n_name = "_tcpstat" },
152 { .n_name = "_udpstat" },
154 { .n_name = "_ipstat" },
155 #define N_ICMPSTAT 41
156 { .n_name = "_icmpstat" },
157 #define N_IGMPSTAT 42
158 { .n_name = "_igmpstat" },
160 { .n_name = "_pimstat" },
162 { .n_name = "_tcbinfo" },
164 { .n_name = "_udbinfo" },
165 #define N_DIVCBINFO 46
166 { .n_name = "_divcbinfo" },
167 #define N_RIPCBINFO 47
168 { .n_name = "_ripcbinfo" },
169 #define N_UNP_COUNT 48
170 { .n_name = "_unp_count" },
171 #define N_UNP_GENCNT 49
172 { .n_name = "_unp_gencnt" },
173 #define N_UNP_DHEAD 50
174 { .n_name = "_unp_dhead" },
175 #define N_UNP_SHEAD 51
176 { .n_name = "_unp_shead" },
177 #define N_RIP6STAT 52
178 { .n_name = "_rip6stat" },
179 #define N_SCTPSTAT 53
180 { .n_name = "_sctpstat" },
181 #define N_MFCTABLESIZE 54
182 { .n_name = "_mfctablesize" },
184 { .n_name = "_arpstat" },
185 #define N_UNP_SPHEAD 56
186 { .n_name = "unp_sphead" },
191 int pr_index; /* index into nlist of cb head */
192 int pr_sindex; /* index into nlist of stat block */
193 u_char pr_wanted; /* 1 if wanted, 0 otherwise */
194 void (*pr_cblocks)(u_long, const char *, int, int);
195 /* control blocks printing routine */
196 void (*pr_stats)(u_long, const char *, int, int);
197 /* statistics printing routine */
198 void (*pr_istats)(char *); /* per/if statistics printing routine */
199 const char *pr_name; /* well-known name */
200 int pr_usesysctl; /* non-zero if we use sysctl, not kvm */
203 { N_TCBINFO, N_TCPSTAT, 1, protopr,
204 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
205 { N_UDBINFO, N_UDPSTAT, 1, protopr,
206 udp_stats, NULL, "udp", 1, IPPROTO_UDP },
208 { -1, N_SCTPSTAT, 1, sctp_protopr,
209 sctp_stats, NULL, "sctp", 1, IPPROTO_SCTP },
212 { -1, -1, 1, protopr,
213 NULL, NULL, "sdp", 1, IPPROTO_TCP },
215 { N_DIVCBINFO, -1, 1, protopr,
216 NULL, NULL, "divert", 1, IPPROTO_DIVERT },
217 { N_RIPCBINFO, N_IPSTAT, 1, protopr,
218 ip_stats, NULL, "ip", 1, IPPROTO_RAW },
219 { N_RIPCBINFO, N_ICMPSTAT, 1, protopr,
220 icmp_stats, NULL, "icmp", 1, IPPROTO_ICMP },
221 { N_RIPCBINFO, N_IGMPSTAT, 1, protopr,
222 igmp_stats, NULL, "igmp", 1, IPPROTO_IGMP },
224 { -1, N_IPSECSTAT, 1, NULL, /* keep as compat */
225 ipsec_stats, NULL, "ipsec", 0, 0},
226 { -1, N_AHSTAT, 1, NULL,
227 ah_stats, NULL, "ah", 0, 0},
228 { -1, N_ESPSTAT, 1, NULL,
229 esp_stats, NULL, "esp", 0, 0},
230 { -1, N_IPCOMPSTAT, 1, NULL,
231 ipcomp_stats, NULL, "ipcomp", 0, 0},
233 { N_RIPCBINFO, N_PIMSTAT, 1, protopr,
234 pim_stats, NULL, "pim", 1, IPPROTO_PIM },
235 { -1, N_CARPSTAT, 1, NULL,
236 carp_stats, NULL, "carp", 1, 0 },
237 { -1, N_PFSYNCSTAT, 1, NULL,
238 pfsync_stats, NULL, "pfsync", 1, 0 },
239 { -1, N_ARPSTAT, 1, NULL,
240 arp_stats, NULL, "arp", 1, 0 },
242 NULL, NULL, NULL, 0, 0 }
246 struct protox ip6protox[] = {
247 { N_TCBINFO, N_TCPSTAT, 1, protopr,
248 tcp_stats, NULL, "tcp", 1, IPPROTO_TCP },
249 { N_UDBINFO, N_UDPSTAT, 1, protopr,
250 udp_stats, NULL, "udp", 1, IPPROTO_UDP },
251 { N_RIPCBINFO, N_IP6STAT, 1, protopr,
252 ip6_stats, ip6_ifstats, "ip6", 1, IPPROTO_RAW },
253 { N_RIPCBINFO, N_ICMP6STAT, 1, protopr,
254 icmp6_stats, icmp6_ifstats, "icmp6", 1, IPPROTO_ICMPV6 },
256 { -1, -1, 1, protopr,
257 NULL, NULL, "sdp", 1, IPPROTO_TCP },
260 { -1, N_IPSEC6STAT, 1, NULL,
261 ipsec_stats, NULL, "ipsec6", 0, 0 },
264 { -1, N_PIM6STAT, 1, NULL,
265 pim6_stats, NULL, "pim6", 1, 0 },
267 { -1, N_RIP6STAT, 1, NULL,
268 rip6_stats, NULL, "rip6", 1, 0 },
270 NULL, NULL, NULL, 0, 0 }
275 struct protox pfkeyprotox[] = {
276 { -1, N_PFKEYSTAT, 1, NULL,
277 pfkey_stats, NULL, "pfkey", 0, 0 },
279 NULL, NULL, NULL, 0, 0 }
283 struct protox atalkprotox[] = {
284 { N_DDPCB, N_DDPSTAT, 1, atalkprotopr,
285 ddp_stats, NULL, "ddp", 0, 0 },
287 NULL, NULL, NULL, 0, 0 }
290 struct protox netgraphprotox[] = {
291 { N_NGSOCKS, -1, 1, netgraphprotopr,
292 NULL, NULL, "ctrl", 0, 0 },
293 { N_NGSOCKS, -1, 1, netgraphprotopr,
294 NULL, NULL, "data", 0, 0 },
296 NULL, NULL, NULL, 0, 0 }
300 struct protox ipxprotox[] = {
301 { N_IPX, N_IPXSTAT, 1, ipxprotopr,
302 ipx_stats, NULL, "ipx", 0, 0 },
303 { N_IPX, N_SPXSTAT, 1, ipxprotopr,
304 spx_stats, NULL, "spx", 0, 0 },
306 NULL, NULL, 0, 0, 0 }
310 struct protox *protoprotox[] = {
323 static void printproto(struct protox *, const char *);
324 static void usage(void);
325 static struct protox *name2protox(const char *);
326 static struct protox *knownname(const char *);
329 static char *nlistf = NULL, *memf = NULL;
331 int Aflag; /* show addresses of protocol control block */
332 int aflag; /* show all sockets (including servers) */
333 int Bflag; /* show information about bpf consumers */
334 int bflag; /* show i/f total bytes in/out */
335 int dflag; /* show i/f dropped packets */
336 int gflag; /* show group (multicast) routing or stats */
337 int hflag; /* show counters in human readable format */
338 int iflag; /* show interfaces */
339 int Lflag; /* show size of listen queues */
340 int mflag; /* show memory stats */
341 int noutputs = 0; /* how much outputs before we exit */
342 int numeric_addr; /* show addresses numerically */
343 int numeric_port; /* show ports numerically */
344 static int pflag; /* show given protocol */
345 int Qflag; /* show netisr information */
346 int rflag; /* show routing tables (or routing stats) */
347 int sflag; /* show protocol statistics */
348 int Wflag; /* wide display */
349 int Tflag; /* TCP Information */
350 int xflag; /* extra information, includes all socket buffer info */
351 int zflag; /* zero stats */
353 int interval; /* repeat interval for i/f stats */
355 char *interface; /* desired i/f for stats, or NULL for all i/fs */
356 int unit; /* unit number for above */
358 int af; /* address family */
359 int live; /* true if we are examining a live system */
362 main(int argc, char *argv[])
364 struct protox *tp = NULL; /* for printing cblocks & stats */
369 while ((ch = getopt(argc, argv, "AaBbdf:ghI:iLlM:mN:np:Qq:rSTsuWw:xz"))
388 if (strcmp(optarg, "ipx") == 0)
390 else if (strcmp(optarg, "inet") == 0)
393 else if (strcmp(optarg, "inet6") == 0)
397 else if (strcmp(optarg, "pfkey") == 0)
400 else if (strcmp(optarg, "unix") == 0)
402 else if (strcmp(optarg, "atalk") == 0)
405 else if (strcmp(optarg, "ng") == 0
406 || strcmp(optarg, "netgraph") == 0)
409 else if (strcmp(optarg, "link") == 0)
412 errx(1, "%s: unknown address family", optarg);
425 for (cp = interface = optarg; isalpha(*cp); cp++)
446 numeric_addr = numeric_port = 1;
449 if ((tp = name2protox(optarg)) == NULL) {
451 "%s: unknown or uninstrumented protocol",
460 noutputs = atoi(optarg);
481 interval = atoi(optarg);
500 #define BACKWARD_COMPATIBILITY
501 #ifdef BACKWARD_COMPATIBILITY
503 if (isdigit(**argv)) {
504 interval = atoi(*argv);
519 * Discard setgid privileges if not the running kernel so that bad
520 * guys can't print interesting stuff from kernel memory.
522 live = (nlistf == NULL && memf == NULL);
527 errx(1, "-x and -T are incompatible, pick one.");
532 bpf_stats(interface);
537 if (kread(0, NULL, 0) == 0)
538 mbpr(kvmd, nl[N_MBSTAT].n_value);
545 if (kread(0, NULL, 0) == 0)
553 * Keep file descriptors open to avoid overhead
554 * of open/close on each call to get* routines.
560 * This does not make sense any more with DNS being default over
561 * the files. Doing a setXXXXent(1) causes a tcp connection to be
562 * used for the queries, which is slower.
566 if (iflag && !sflag) {
567 intpr(interval, nl[N_IFNET].n_value, NULL);
572 rt_stats(nl[N_RTSTAT].n_value, nl[N_RTTRASH].n_value);
574 routepr(nl[N_RTREE].n_value);
579 if (af == AF_INET || af == AF_UNSPEC)
580 mrt_stats(nl[N_MRTSTAT].n_value);
582 if (af == AF_INET6 || af == AF_UNSPEC)
583 mrt6_stats(nl[N_MRT6STAT].n_value);
586 if (af == AF_INET || af == AF_UNSPEC)
587 mroutepr(nl[N_MFCHASHTBL].n_value,
588 nl[N_MFCTABLESIZE].n_value,
589 nl[N_VIFTABLE].n_value);
591 if (af == AF_INET6 || af == AF_UNSPEC)
592 mroute6pr(nl[N_MF6CTABLE].n_value,
593 nl[N_MIF6TABLE].n_value);
600 printproto(tp, tp->pr_name);
603 if (af == AF_INET || af == AF_UNSPEC)
604 for (tp = protox; tp->pr_name; tp++)
605 printproto(tp, tp->pr_name);
607 if (af == AF_INET6 || af == AF_UNSPEC)
608 for (tp = ip6protox; tp->pr_name; tp++)
609 printproto(tp, tp->pr_name);
612 if (af == PF_KEY || af == AF_UNSPEC)
613 for (tp = pfkeyprotox; tp->pr_name; tp++)
614 printproto(tp, tp->pr_name);
617 if (af == AF_IPX || af == AF_UNSPEC) {
618 for (tp = ipxprotox; tp->pr_name; tp++)
619 printproto(tp, tp->pr_name);
622 if (af == AF_APPLETALK || af == AF_UNSPEC)
623 for (tp = atalkprotox; tp->pr_name; tp++)
624 printproto(tp, tp->pr_name);
626 if (af == AF_NETGRAPH || af == AF_UNSPEC)
627 for (tp = netgraphprotox; tp->pr_name; tp++)
628 printproto(tp, tp->pr_name);
629 #endif /* NETGRAPH */
630 if ((af == AF_UNIX || af == AF_UNSPEC) && !sflag)
631 unixpr(nl[N_UNP_COUNT].n_value, nl[N_UNP_GENCNT].n_value,
632 nl[N_UNP_DHEAD].n_value, nl[N_UNP_SHEAD].n_value,
633 nl[N_UNP_SPHEAD].n_value);
638 * Print out protocol statistics or control blocks (per sflag).
639 * If the interface was not specifically requested, and the symbol
640 * is not in the namelist, ignore this one.
647 void (*pr)(u_long, const char *, int, int);
653 intpr(interval, nl[N_IFNET].n_value,
656 printf("%s: no per-interface stats routine\n",
663 printf("%s: no stats routine\n",
667 if (tp->pr_usesysctl && live)
669 else if (tp->pr_sindex < 0) {
672 "%s: stats routine doesn't work on cores\n",
676 off = nl[tp->pr_sindex].n_value;
682 printf("%s: no PCB routine\n", tp->pr_name);
685 if (tp->pr_usesysctl && live)
687 else if (tp->pr_index < 0) {
690 "%s: PCB routine doesn't work on cores\n",
694 off = nl[tp->pr_index].n_value;
696 if (pr != NULL && (off || (live && tp->pr_usesysctl) ||
698 (*pr)(off, name, af, tp->pr_protocol);
702 * Read kernel memory, return 0 on success.
705 kread(u_long addr, void *buf, size_t size)
707 char errbuf[_POSIX2_LINE_MAX];
710 kvmd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, errbuf);
713 if (kvm_nlist(kvmd, nl) < 0) {
715 errx(1, "%s: kvm_nlist: %s", nlistf,
718 errx(1, "kvm_nlist: %s", kvm_geterr(kvmd));
721 if (nl[0].n_type == 0) {
723 errx(1, "%s: no namelist", nlistf);
725 errx(1, "no namelist");
728 warnx("kvm not available: %s", errbuf);
734 if (kvm_read(kvmd, addr, buf, size) != (ssize_t)size) {
735 warnx("%s", kvm_geterr(kvmd));
744 return (n != 1 ? "s" : "");
748 plurales(uintmax_t n)
750 return (n != 1 ? "es" : "");
754 pluralies(uintmax_t n)
756 return (n != 1 ? "ies" : "y");
760 * Find the protox for the given "well-known" name.
762 static struct protox *
763 knownname(const char *name)
765 struct protox **tpp, *tp;
767 for (tpp = protoprotox; *tpp; tpp++)
768 for (tp = *tpp; tp->pr_name; tp++)
769 if (strcmp(tp->pr_name, name) == 0)
775 * Find the protox corresponding to name.
777 static struct protox *
778 name2protox(const char *name)
781 char **alias; /* alias from p->aliases */
785 * Try to find the name in the list of "well-known" names. If that
786 * fails, check if name is an alias for an Internet protocol.
788 if ((tp = knownname(name)) != NULL)
791 setprotoent(1); /* make protocol lookup cheaper */
792 while ((p = getprotoent()) != NULL) {
793 /* assert: name not same as p->name */
794 for (alias = p->p_aliases; *alias; alias++)
795 if (strcmp(name, *alias) == 0) {
797 return (knownname(p->p_name));
807 (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%s\n",
808 "usage: netstat [-AaLnSTWx] [-f protocol_family | -p protocol]\n"
809 " [-M core] [-N system]",
810 " netstat -i | -I interface [-abdhnW] [-f address_family]\n"
811 " [-M core] [-N system]",
812 " netstat -w wait [-I interface] [-d] [-M core] [-N system] [-q howmany]",
813 " netstat -s [-s] [-z] [-f protocol_family | -p protocol]\n"
814 " [-M core] [-N system]",
815 " netstat -i | -I interface -s [-f protocol_family | -p protocol]\n"
816 " [-M core] [-N system]",
817 " netstat -m [-M core] [-N system]",
818 " netstat -B [-I interface]",
819 " netstat -r [-AanW] [-f address_family] [-M core] [-N system]",
820 " netstat -rs [-s] [-M core] [-N system]",
821 " netstat -g [-W] [-f address_family] [-M core] [-N system]",
822 " netstat -gs [-s] [-f address_family] [-M core] [-N system]",