1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28/*
29 * Display synchronous serial line statistics
30 */
31
32#include <sys/types.h>
33#include <ctype.h>
34#include <unistd.h>
35#include <sys/ioctl.h>
36#include <stdlib.h>
37#include <stdio.h>
38#include <string.h>
39#include <sys/stream.h>
40#include <sys/stropts.h>
41#include <fcntl.h>
42#include <sys/ser_sync.h>
43#include <libdlpi.h>
44
45static struct scc_mode sm;
46static struct sl_stats st;
47
48static void usage(void);
49static void sample(int count, int period);
50
51static char sername[DLPI_LINKNAME_MAX];
52static int fd;
53
54int
55main(int argc, char **argv)
56{
57	char *cp;
58	char serdevice[DLPI_LINKNAME_MAX];
59	int do_clear = 0;
60	int period = 0;
61	int isize, osize;
62	int count;
63	int retval;
64	struct strioctl sioc;
65	uint_t ppa;
66	dlpi_handle_t dh;
67
68	if (argc == 1) {
69		usage();
70		exit(1);
71	}
72	argc--;				/* skip the command name */
73	argv++;
74
75	/*
76	 * The following loop processes command line arguments.
77	 * If the argument begins with a '-', it is trated as an option.
78	 * The only option currently implemented is "-c" (clears statistics).
79	 * If the argument begins with a numeral, it is treated as an interval.
80	 * Intervals must be positive integers greater than zero.
81	 * Any argument that survives this is treated as a device name to be
82	 * found under /dev.
83	 */
84	while (argc > 0) {
85		if (argv[0][0] == '-') {
86			if (argc == 1) {
87				usage();
88				exit(1);
89			}
90			if (argv[0][1] != 'c') {
91				usage();
92				exit(1);
93			}
94			do_clear = 1;
95		} else if ((argv[0][0] >= '0') && (argv[0][0] <= '9')) {
96			period = atoi(*argv);
97			if (period == 0) {
98				(void) fprintf(stderr,
99				    "syncstat: bad interval: %s\n", *argv);
100				exit(1);
101			}
102		} else {
103			if (snprintf(sername, sizeof (sername), "%s",
104			    *argv) >= sizeof (sername)) {
105				(void) fprintf(stderr, "syncstat: invalid "
106				    "device name (too long) %s\n", *argv);
107				    exit(1);
108			}
109		}
110		argc--;
111		argv++;
112	}
113
114	for (cp = sername; (*cp) && (!isdigit(*cp)); cp++) {}
115	if (*cp == '\0') {	/* hit the end without finding a number */
116		(void) fprintf(stderr,
117		    "syncstat: %s missing minor device number\n", sername);
118		exit(1);
119	}
120
121	if ((retval = dlpi_open(sername, &dh, DLPI_SERIAL)) != DLPI_SUCCESS) {
122		(void) fprintf(stderr, "syncstat: dlpi_open %s: %s\n", sername,
123		    dlpi_strerror(retval));
124		exit(1);
125	}
126
127	(void) dlpi_parselink(sername, serdevice, &ppa);
128	(void) printf("syncstat: control device: %s, ppa=%u\n", serdevice, ppa);
129
130	fd = dlpi_fd(dh);
131	sioc.ic_cmd = S_IOCGETMODE;
132	sioc.ic_timout = -1;
133	sioc.ic_len = sizeof (struct scc_mode);
134	sioc.ic_dp = (char *)&sm;
135	if (ioctl(fd, I_STR, &sioc) < 0) {
136		perror("S_IOCGETMODE");
137		(void) fprintf(stderr,
138		    "syncstat: can't get sync mode info for %s\n", sername);
139		exit(1);
140	}
141	if (do_clear) {
142		sioc.ic_cmd = S_IOCCLRSTATS;
143		sioc.ic_timout = -1;
144		sioc.ic_len = sizeof (struct sl_stats);
145		sioc.ic_dp = (char *)&st;
146		if (ioctl(fd, I_STR, &sioc) < 0) {
147			perror("S_IOCCLRSTATS");
148			(void) fprintf(stderr,
149			    "syncstat: can't clear stats for %s\n", sername);
150			exit(1);
151		}
152	}
153
154	sioc.ic_cmd = S_IOCGETSTATS;
155	sioc.ic_timout = -1;
156	sioc.ic_len = sizeof (struct sl_stats);
157	sioc.ic_dp = (char *)&st;
158	if (ioctl(fd, I_STR, &sioc) < 0) {
159		perror("S_IOCGETSTATS");
160		(void) fprintf(stderr, "syncstat: can't get stats for %s\n",
161		    sername);
162		exit(1);
163	}
164	if (period) {
165		if (sm.sm_baudrate == 0) {
166			(void) fprintf(stderr, "syncstat: baud rate not set\n");
167			exit(1);
168		}
169		for (count = 0; ; count++) {
170			(void) fflush(stdout);
171			(void) sleep(period);
172			sample(count, period);
173		}
174	}
175	isize = osize = 0;
176	if (st.opack)
177		osize = st.ochar / st.opack;
178	if (st.ipack)
179		isize = st.ichar / st.ipack;
180	(void) printf("    speed   ipkts   opkts  undrun  ovrrun   abort     "
181	    "crc   isize   osize\n");
182	(void) printf(" %7d %7d %7d %7d %7d %7d %7d %7d %7d\n", sm.sm_baudrate,
183	    st.ipack, st.opack, st.underrun, st.overrun, st.abort, st.crc,
184	    isize, osize);
185	return (0);
186}
187
188static void
189sample(int count, int period)
190{
191	struct sl_stats nst;
192	struct strioctl sioc;
193	int iutil, outil;
194
195	sioc.ic_cmd = S_IOCGETSTATS;
196	sioc.ic_timout = -1;
197	sioc.ic_len = sizeof (struct sl_stats);
198	sioc.ic_dp = (char *)&nst;
199	if (ioctl(fd, I_STR, &sioc) < 0) {
200		perror("S_IOCGETSTATS");
201		(void) fprintf(stderr, "syncstat: can't get stats for %s\n",
202		    sername);
203		exit(1);
204	}
205
206	st.ipack = nst.ipack - st.ipack;
207	st.opack = nst.opack - st.opack;
208	st.ichar = nst.ichar - st.ichar;
209	st.ochar = nst.ochar - st.ochar;
210	st.crc = nst.crc - st.crc;
211	st.overrun = nst.overrun - st.overrun;
212	st.underrun = nst.underrun - st.underrun;
213	st.abort = nst.abort - st.abort;
214	iutil = 8 * st.ichar / period;
215	iutil = 100 * iutil / sm.sm_baudrate;
216	outil = 8 * st.ochar / period;
217	outil = 100 * outil / sm.sm_baudrate;
218	if ((count % 20) == 0)
219		(void) printf("    ipkts   opkts  undrun  ovrrun   abort     "
220		    "crc   iutil   outil\n");
221	(void) printf(" %7d %7d %7d %7d %7d %7d %6d%% %6d%%\n", st.ipack,
222	    st.opack, st.underrun, st.overrun, st.abort, st.crc, iutil, outil);
223
224	st = nst;
225}
226
227static void
228usage()
229{
230	(void) fprintf(stderr, "Usage: syncstat [-c] device [period]\n");
231}
232