xref: /freebsd/usr.bin/systat/ip.c (revision 39beb93c3f8bdbf72a61fda42300b5ebed7390c8)
1 /*-
2  * Copyright (c) 1980, 1992, 1993
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. 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.
20  *
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
31  * SUCH DAMAGE.
32  */
33 
34 #include <sys/cdefs.h>
35 
36 __FBSDID("$FreeBSD$");
37 
38 #ifdef lint
39 static const char sccsid[] = "@(#)mbufs.c	8.1 (Berkeley) 6/6/93";
40 #endif
41 
42 /* From:
43 	"Id: mbufs.c,v 1.5 1997/02/24 20:59:03 wollman Exp"
44 */
45 
46 #include <sys/param.h>
47 #include <sys/types.h>
48 #include <sys/socket.h>
49 #include <sys/sysctl.h>
50 
51 #include <netinet/in.h>
52 #include <netinet/in_systm.h>
53 #include <netinet/ip.h>
54 #include <netinet/ip_var.h>
55 #include <netinet/udp.h>
56 #include <netinet/udp_var.h>
57 
58 #include <stdlib.h>
59 #include <string.h>
60 #include <paths.h>
61 
62 #include "systat.h"
63 #include "extern.h"
64 #include "mode.h"
65 
66 struct stat {
67 	struct ipstat i;
68 	struct udpstat u;
69 };
70 
71 static struct stat curstat, initstat, oldstat;
72 
73 /*-
74 --0         1         2         3         4         5         6         7
75 --0123456789012345678901234567890123456789012345678901234567890123456789012345
76 00          IP Input                           IP Output
77 01999999999 total packets received   999999999 total packets sent
78 02999999999 - with bad checksums     999999999 - generated locally
79 03999999999 - too short for header   999999999 - output drops
80 04999999999 - too short for data     999999999 output fragments generated
81 05999999999 - with invalid hlen      999999999 - fragmentation failed
82 06999999999 - with invalid length    999999999 destinations unreachable
83 07999999999 - with invalid version   999999999 packets output via raw IP
84 08999999999 - jumbograms
85 09999999999 total fragments received           UDP Statistics
86 10999999999 - fragments dropped      999999999 total input packets
87 11999999999 - fragments timed out    999999999 - too short for header
88 12999999999 - packets reassembled ok 999999999 - invalid checksum
89 13999999999 packets forwarded        999999999 - no checksum
90 14999999999 - unreachable dests      999999999 - invalid length
91 15999999999 - redirects generated    999999999 - no socket for dest port
92 16999999999 option errors            999999999 - no socket for broadcast
93 17999999999 unwanted multicasts      999999999 - socket buffer full
94 18999999999 delivered to upper layer 999999999 total output packets
95 --0123456789012345678901234567890123456789012345678901234567890123456789012345
96 --0         1         2         3         4         5         6         7
97 */
98 
99 WINDOW *
100 openip(void)
101 {
102 	return (subwin(stdscr, LINES-3-1, 0, MAINWIN_ROW, 0));
103 }
104 
105 void
106 closeip(WINDOW *w)
107 {
108 	if (w == NULL)
109 		return;
110 	wclear(w);
111 	wrefresh(w);
112 	delwin(w);
113 }
114 
115 void
116 labelip(void)
117 {
118 	wmove(wnd, 0, 0); wclrtoeol(wnd);
119 #define L(row, str) mvwprintw(wnd, row, 10, str)
120 #define R(row, str) mvwprintw(wnd, row, 45, str);
121 	L(0, "IP Input");		R(0, "IP Output");
122 	L(1, "total packets received");	R(1, "total packets sent");
123 	L(2, "- with bad checksums");	R(2, "- generated locally");
124 	L(3, "- too short for header");	R(3, "- output drops");
125 	L(4, "- too short for data");	R(4, "output fragments generated");
126 	L(5, "- with invalid hlen");	R(5, "- fragmentation failed");
127 	L(6, "- with invalid length");	R(6, "destinations unreachable");
128 	L(7, "- with invalid version");	R(7, "packets output via raw IP");
129 	L(8, "- jumbograms");
130 	L(9, "total fragments received");	R(9, "UDP Statistics");
131 	L(10, "- fragments dropped");	R(10, "total input packets");
132 	L(11, "- fragments timed out");	R(11, "- too short for header");
133 	L(12, "- packets reassembled ok");	R(12, "- invalid checksum");
134 	L(13, "packets forwarded");	R(13, "- no checksum");
135 	L(14, "- unreachable dests");	R(14, "- invalid length");
136 	L(15, "- redirects generated");	R(15, "- no socket for dest port");
137 	L(16, "option errors");		R(16, "- no socket for broadcast");
138 	L(17, "unwanted multicasts");	R(17, "- socket buffer full");
139 	L(18, "delivered to upper layer");	R(18, "total output packets");
140 #undef L
141 #undef R
142 }
143 
144 static void
145 domode(struct stat *ret)
146 {
147 	const struct stat *sub;
148 	int divisor = 1;
149 
150 	switch(currentmode) {
151 	case display_RATE:
152 		sub = &oldstat;
153 		divisor = naptime;
154 		break;
155 	case display_DELTA:
156 		sub = &oldstat;
157 		break;
158 	case display_SINCE:
159 		sub = &initstat;
160 		break;
161 	default:
162 		*ret = curstat;
163 		return;
164 	}
165 #define DO(stat) ret->stat = (curstat.stat - sub->stat) / divisor
166 	DO(i.ips_total);
167 	DO(i.ips_badsum);
168 	DO(i.ips_tooshort);
169 	DO(i.ips_toosmall);
170 	DO(i.ips_badhlen);
171 	DO(i.ips_badlen);
172 	DO(i.ips_fragments);
173 	DO(i.ips_fragdropped);
174 	DO(i.ips_fragtimeout);
175 	DO(i.ips_forward);
176 	DO(i.ips_cantforward);
177 	DO(i.ips_redirectsent);
178 	DO(i.ips_noproto);
179 	DO(i.ips_delivered);
180 	DO(i.ips_localout);
181 	DO(i.ips_odropped);
182 	DO(i.ips_reassembled);
183 	DO(i.ips_fragmented);
184 	DO(i.ips_ofragments);
185 	DO(i.ips_cantfrag);
186 	DO(i.ips_badoptions);
187 	DO(i.ips_noroute);
188 	DO(i.ips_badvers);
189 	DO(i.ips_rawout);
190 	DO(i.ips_toolong);
191 	DO(i.ips_notmember);
192 	DO(u.udps_ipackets);
193 	DO(u.udps_hdrops);
194 	DO(u.udps_badsum);
195 	DO(u.udps_nosum);
196 	DO(u.udps_badlen);
197 	DO(u.udps_noport);
198 	DO(u.udps_noportbcast);
199 	DO(u.udps_fullsock);
200 	DO(u.udps_opackets);
201 #undef DO
202 }
203 
204 void
205 showip(void)
206 {
207 	struct stat stats;
208 	u_long totalout;
209 
210 	domode(&stats);
211 	totalout = stats.i.ips_forward + stats.i.ips_localout;
212 
213 #define DO(stat, row, col) \
214 	mvwprintw(wnd, row, col, "%9lu", stats.stat)
215 
216 	DO(i.ips_total, 1, 0);
217 	mvwprintw(wnd, 1, 35, "%9lu", totalout);
218 	DO(i.ips_badsum, 2, 0);
219 	DO(i.ips_localout, 2, 35);
220 	DO(i.ips_tooshort, 3, 0);
221 	DO(i.ips_odropped, 3, 35);
222 	DO(i.ips_toosmall, 4, 0);
223 	DO(i.ips_ofragments, 4, 35);
224 	DO(i.ips_badhlen, 5, 0);
225 	DO(i.ips_cantfrag, 5, 35);
226 	DO(i.ips_badlen, 6, 0);
227 	DO(i.ips_noroute, 6, 35);
228 	DO(i.ips_badvers, 7, 0);
229 	DO(i.ips_rawout, 7, 35);
230 	DO(i.ips_toolong, 8, 0);
231 	DO(i.ips_fragments, 9, 0);
232 	DO(i.ips_fragdropped, 10, 0);
233 	DO(u.udps_ipackets, 10, 35);
234 	DO(i.ips_fragtimeout, 11, 0);
235 	DO(u.udps_hdrops, 11, 35);
236 	DO(i.ips_reassembled, 12, 0);
237 	DO(u.udps_badsum, 12, 35);
238 	DO(i.ips_forward, 13, 0);
239 	DO(u.udps_nosum, 13, 35);
240 	DO(i.ips_cantforward, 14, 0);
241 	DO(u.udps_badlen, 14, 35);
242 	DO(i.ips_redirectsent, 15, 0);
243 	DO(u.udps_noport, 15, 35);
244 	DO(i.ips_badoptions, 16, 0);
245 	DO(u.udps_noportbcast, 16, 35);
246 	DO(i.ips_notmember, 17, 0);
247 	DO(u.udps_fullsock, 17, 35);
248 	DO(i.ips_delivered, 18, 0);
249 	DO(u.udps_opackets, 18, 35);
250 #undef DO
251 }
252 
253 int
254 initip(void)
255 {
256 	size_t len;
257 	int name[4];
258 
259 	name[0] = CTL_NET;
260 	name[1] = PF_INET;
261 	name[2] = IPPROTO_IP;
262 	name[3] = IPCTL_STATS;
263 
264 	len = 0;
265 	if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
266 		error("sysctl getting ipstat size failed");
267 		return 0;
268 	}
269 	if (len > sizeof curstat.i) {
270 		error("ipstat structure has grown--recompile systat!");
271 		return 0;
272 	}
273 	if (sysctl(name, 4, &initstat.i, &len, 0, 0) < 0) {
274 		error("sysctl getting ipstat failed");
275 		return 0;
276 	}
277 	name[2] = IPPROTO_UDP;
278 	name[3] = UDPCTL_STATS;
279 
280 	len = 0;
281 	if (sysctl(name, 4, 0, &len, 0, 0) < 0) {
282 		error("sysctl getting udpstat size failed");
283 		return 0;
284 	}
285 	if (len > sizeof curstat.u) {
286 		error("ipstat structure has grown--recompile systat!");
287 		return 0;
288 	}
289 	if (sysctl(name, 4, &initstat.u, &len, 0, 0) < 0) {
290 		error("sysctl getting udpstat failed");
291 		return 0;
292 	}
293 	oldstat = initstat;
294 	return 1;
295 }
296 
297 void
298 resetip(void)
299 {
300 	size_t len;
301 	int name[4];
302 
303 	name[0] = CTL_NET;
304 	name[1] = PF_INET;
305 	name[2] = IPPROTO_IP;
306 	name[3] = IPCTL_STATS;
307 
308 	len = sizeof initstat.i;
309 	if (sysctl(name, 4, &initstat.i, &len, 0, 0) < 0) {
310 		error("sysctl getting ipstat failed");
311 	}
312 	name[2] = IPPROTO_UDP;
313 	name[3] = UDPCTL_STATS;
314 
315 	len = sizeof initstat.u;
316 	if (sysctl(name, 4, &initstat.u, &len, 0, 0) < 0) {
317 		error("sysctl getting udpstat failed");
318 	}
319 	oldstat = initstat;
320 }
321 
322 void
323 fetchip(void)
324 {
325 	int name[4];
326 	size_t len;
327 
328 	oldstat = curstat;
329 	name[0] = CTL_NET;
330 	name[1] = PF_INET;
331 	name[2] = IPPROTO_IP;
332 	name[3] = IPCTL_STATS;
333 	len = sizeof curstat.i;
334 
335 	if (sysctl(name, 4, &curstat.i, &len, 0, 0) < 0)
336 		return;
337 	name[2] = IPPROTO_UDP;
338 	name[3] = UDPCTL_STATS;
339 	len = sizeof curstat.u;
340 
341 	if (sysctl(name, 4, &curstat.u, &len, 0, 0) < 0)
342 		return;
343 }
344 
345