File: mii-tool.c

package info (click to toggle)
sdpnetstat 1.60-1
  • links: PTS
  • area: main
  • in suites: squeeze, wheezy
  • size: 1,436 kB
  • ctags: 1,134
  • sloc: ansic: 13,123; makefile: 299; sh: 102
file content (462 lines) | stat: -rw-r--r-- 13,441 bytes parent folder | download | duplicates (5)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
/*

    mii-tool: monitor and control the MII for a network interface

    Usage:

	mii-tool [-VvRrw] [-A media,... | -F media] [interface ...]

    This program is based on Donald Becker's "mii-diag" program, which
    is more capable and verbose than this tool, but also somewhat
    harder to use.

    Copyright (C) 2000 David A. Hinds -- dhinds@pcmcia.sourceforge.org

    mii-diag is written/copyright 1997-2000 by Donald Becker
        <becker@scyld.com>

    This program is free software; you can redistribute it
    and/or modify it under the terms of the GNU General Public
    License as published by the Free Software Foundation.

    Donald Becker may be reached as becker@scyld.com, or C/O
    Scyld Computing Corporation, 410 Severn Av., Suite 210,
    Annapolis, MD 21403

    References
	http://www.scyld.com/diag/mii-status.html
	http://www.scyld.com/expert/NWay.html
	http://www.national.com/pf/DP/DP83840.html
*/

static char version[] =
"mii-tool.c 1.9 2000/04/28 00:56:08 (David Hinds)\n";

#include <unistd.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <getopt.h>
#include <time.h>
#include <syslog.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#ifndef __GLIBC__
#include <linux/if_arp.h>
#include <linux/if_ether.h>
#endif
#include "mii.h"

#define MAX_ETH		8		/* Maximum # of interfaces */

/* Table of known MII's */
static struct {
    u_short	id1, id2;
    char	*name;
} mii_id[] = {
    { 0x0022, 0x5610, "AdHoc AH101LF" },
    { 0x0022, 0x5520, "Altimata AC101LF" },
    { 0x0000, 0x6b90, "AMD 79C901A HomePNA" },
    { 0x0000, 0x6b70, "AMD 79C901A 10baseT" },
    { 0x0181, 0xb800, "Davicom DM9101" },
    { 0x0043, 0x7411, "Enable EL40-331" },
    { 0x0015, 0xf410, "ICS 1889" },
    { 0x0015, 0xf420, "ICS 1890" },
    { 0x0015, 0xf430, "ICS 1892" },
    { 0x02a8, 0x0150, "Intel 82555" },
    { 0x7810, 0x0000, "Level One LXT970/971" },
    { 0x2000, 0x5c00, "National DP83840A" },
    { 0x0181, 0x4410, "Quality QS6612" },
    { 0x0282, 0x1c50, "SMSC 83C180" },
    { 0x0300, 0xe540, "TDK 78Q2120" },
};
#define NMII (sizeof(mii_id)/sizeof(mii_id[0]))

/*--------------------------------------------------------------------*/

struct option longopts[] = {
 /* { name  has_arg  *flag  val } */
    {"advertise",	1, 0, 'A'},	/* Change capabilities advertised. */
    {"force",		1, 0, 'F'},	/* Change capabilities advertised. */
    {"phy",		1, 0, 'p'},	/* Set PHY (MII address) to report. */
    {"log",		0, 0, 'l'},	/* Set PHY (MII address) to report. */
    {"restart",		0, 0, 'r'},	/* Restart link negotiation */
    {"reset",		0, 0, 'R'},	/* Reset the transceiver. */
    {"verbose", 	0, 0, 'v'},	/* Report each action taken.  */
    {"version", 	0, 0, 'V'},	/* Emit version information.  */
    {"watch", 		0, 0, 'w'},	/* Constantly monitor the port.  */
    {"help", 		0, 0, '?'},	/* Give help */
    { 0, 0, 0, 0 }
};

static unsigned int
    verbose = 0,
    opt_version = 0,
    opt_restart = 0,
    opt_reset = 0,
    opt_log = 0,
    opt_watch = 0;
static int nway_advertise = 0;
static int fixed_speed = 0;
static int override_phy = -1;

static int skfd = -1;		/* AF_INET socket for ioctl() calls. */
static struct ifreq ifr;

/*--------------------------------------------------------------------*/

static int mdio_read(int skfd, int location)
{
    struct mii_data *mii = (struct mii_data *)&ifr.ifr_data;
    mii->reg_num = location;
    if (ioctl(skfd, SIOCGMIIREG, &ifr) < 0) {
	fprintf(stderr, "SIOCGMIIREG on %s failed: %s\n", ifr.ifr_name,
		strerror(errno));
	return -1;
    }
    return mii->val_out;
}

static void mdio_write(int skfd, int location, int value)
{
    struct mii_data *mii = (struct mii_data *)&ifr.ifr_data;
    mii->reg_num = location;
    mii->val_in = value;
    if (ioctl(skfd, SIOCSMIIREG, &ifr) < 0) {
	fprintf(stderr, "SIOCSMIIREG on %s failed: %s\n", ifr.ifr_name,
		strerror(errno));
    }
}

/*--------------------------------------------------------------------*/

const struct {
    char	*name;
    u_short	value;
} media[] = {
    /* The order through 100baseT4 matches bits in the BMSR */
    { "10baseT-HD",	MII_AN_10BASET_HD },
    { "10baseT-FD",	MII_AN_10BASET_FD },
    { "100baseTx-HD",	MII_AN_100BASETX_HD },
    { "100baseTx-FD",	MII_AN_100BASETX_FD },
    { "100baseT4",	MII_AN_100BASET4 },
    { "100baseTx",	MII_AN_100BASETX_FD | MII_AN_100BASETX_HD },
    { "10baseT",	MII_AN_10BASET_FD | MII_AN_10BASET_HD },
};
#define NMEDIA (sizeof(media)/sizeof(media[0]))
	
/* Parse an argument list of media types */
static int parse_media(char *arg)
{
    int mask, i;
    char *s;
    mask = strtoul(arg, &s, 16);
    if ((*arg != '\0') && (*s == '\0')) {
	if ((mask & MII_AN_ABILITY_MASK) &&
	    !(mask & ~MII_AN_ABILITY_MASK))
	    return mask;
	goto failed;
    } else {
	mask = 0;
	s = strtok(arg, ", ");
	do {
	    for (i = 0; i < NMEDIA; i++)
		if (strcasecmp(media[i].name, s) == 0) break;
	    if (i == NMEDIA) goto failed;
	    mask |= media[i].value;
	} while ((s = strtok(NULL, ", ")) != NULL);
    }
    return mask;
failed:
    fprintf(stderr, "Invalid media specification '%s'.\n", arg);
    return -1;
}

/*--------------------------------------------------------------------*/

static char *media_list(int mask, int best)
{
    static char buf[100];
    int i;
    *buf = '\0';
    mask >>= 5;
    for (i = 4; i >= 0; i--) {
	if (mask & (1<<i)) {
	    strcat(buf, " ");
	    strcat(buf, media[i].name);
	    if (best) break;
	}
    }
    if (mask & (1<<5))
	strcat(buf, " flow-control");
    return buf;
}

int show_basic_mii(int sock, int phy_id)
{
    char buf[100];
    int i, mii_val[32];
    int bmcr, bmsr, advert, lkpar;

    /* Some bits in the BMSR are latched, but we can't rely on being
       the only reader, so only the current values are meaningful */
    mdio_read(sock, MII_BMSR);
    for (i = 0; i < ((verbose > 1) ? 32 : 8); i++)
	mii_val[i] = mdio_read(sock, i);

    if (mii_val[MII_BMCR] == 0xffff) {
	fprintf(stderr, "  No MII transceiver present!.\n");
	return -1;
    }

    /* Descriptive rename. */
    bmcr = mii_val[MII_BMCR]; bmsr = mii_val[MII_BMSR];
    advert = mii_val[MII_ANAR]; lkpar = mii_val[MII_ANLPAR];

    sprintf(buf, "%s: ", ifr.ifr_name);
    if (bmcr & MII_BMCR_AN_ENA) {
	if (bmsr & MII_BMSR_AN_COMPLETE) {
	    if (advert & lkpar) {
		strcat(buf, (lkpar & MII_AN_ACK) ?
		       "negotiated" : "no autonegotiation,");
		strcat(buf, media_list(advert & lkpar, 1));
		strcat(buf, ", ");
	    } else {
		strcat(buf, "autonegotiation failed, ");
	    }
	} else if (bmcr & MII_BMCR_RESTART) {
	    strcat(buf, "autonegotiation restarted, ");
	}
    } else {
	sprintf(buf+strlen(buf), "%s Mbit, %s duplex, ",
	       (bmcr & MII_BMCR_100MBIT) ? "100" : "10",
	       (bmcr & MII_BMCR_DUPLEX) ? "full" : "half");
    }
    strcat(buf, (bmsr & MII_BMSR_LINK_VALID) ? "link ok" : "no link");

    if (opt_watch) {
	if (opt_log) {
	    syslog(LOG_INFO, buf);
	} else {
	    char s[20];
	    time_t t = time(NULL);
	    strftime(s, sizeof(s), "%T", localtime(&t));
	    printf("%s %s\n", s, buf);
	}
    } else {
	printf("%s\n", buf);
    }

    if (verbose > 1) {
	printf("  registers for MII PHY %d: ", phy_id);
	for (i = 0; i < 32; i++)
	    printf("%s %4.4x", ((i % 8) ? "" : "\n   "), mii_val[i]);
	printf("\n");
    }

    if (verbose) {
	printf("  product info: ");
	for (i = 0; i < NMII; i++)
	    if ((mii_id[i].id1 == mii_val[2]) &&
		(mii_id[i].id2 == (mii_val[3] & 0xfff0)))
		break;
	if (i < NMII)
	    printf("%s rev %d\n", mii_id[i].name, mii_val[3]&0x0f);
	else
	    printf("vendor %02x:%02x:%02x, model %d rev %d\n",
		   mii_val[2]>>10, (mii_val[2]>>2)&0xff,
		   ((mii_val[2]<<6)|(mii_val[3]>>10))&0xff,
		   (mii_val[3]>>4)&0x3f, mii_val[3]&0x0f);
	printf("  basic mode:   ");
	if (bmcr & MII_BMCR_RESET)
	    printf("software reset, ");
	if (bmcr & MII_BMCR_LOOPBACK)
	    printf("loopback, ");
	if (bmcr & MII_BMCR_ISOLATE)
	    printf("isolate, ");
	if (bmcr & MII_BMCR_COLTEST)
	    printf("collision test, ");
	if (bmcr & MII_BMCR_AN_ENA) {
	    printf("autonegotiation enabled\n");
	} else {
	    printf("%s Mbit, %s duplex\n",
		   (bmcr & MII_BMCR_100MBIT) ? "100" : "10",
		   (bmcr & MII_BMCR_DUPLEX) ? "full" : "half");
	}
	printf("  basic status: ");
	if (bmsr & MII_BMSR_AN_COMPLETE)
	    printf("autonegotiation complete, ");
	else if (bmcr & MII_BMCR_RESTART)
	    printf("autonegotiation restarted, ");
	if (bmsr & MII_BMSR_REMOTE_FAULT)
	    printf("remote fault, ");
	printf((bmsr & MII_BMSR_LINK_VALID) ? "link ok" : "no link");
	printf("\n  capabilities:%s", media_list(bmsr >> 6, 0));
	printf("\n  advertising: %s", media_list(advert, 0));
	if (lkpar & MII_AN_ABILITY_MASK)
	    printf("\n  link partner:%s", media_list(lkpar, 0));
	printf("\n");
    }
    return 0;
}

/*--------------------------------------------------------------------*/

static int do_one_xcvr(int skfd, char *ifname, int maybe)
{
    struct mii_data *mii = (struct mii_data *)&ifr.ifr_data;

    /* Get the vitals from the interface. */
    strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
    if (ioctl(skfd, SIOCGMIIPHY, &ifr) < 0) {
	if (!maybe || (errno != ENODEV))
	    fprintf(stderr, "SIOCGMIIPHY on '%s' failed: %s\n",
		    ifname, strerror(errno));
	return 1;
    }

    if (override_phy >= 0) {
	printf("using the specified MII index %d.\n", override_phy);
	mii->phy_id = override_phy;
    }

    if (opt_reset) {
	printf("resetting the transceiver...\n");
	mdio_write(skfd, MII_BMCR, MII_BMCR_RESET);
    }
    if (nway_advertise) {
	mdio_write(skfd, MII_ANAR, nway_advertise | 1);
	opt_restart = 1;
    }
    if (opt_restart) {
	printf("restarting autonegotiation...\n");
	mdio_write(skfd, MII_BMCR, 0x0000);
	mdio_write(skfd, MII_BMCR, MII_BMCR_AN_ENA|MII_BMCR_RESTART);
    }
    if (fixed_speed) {
	int bmcr = 0;
	if (fixed_speed & (MII_AN_100BASETX_FD|MII_AN_100BASETX_HD))
	    bmcr |= MII_BMCR_100MBIT;
	if (fixed_speed & (MII_AN_100BASETX_FD|MII_AN_10BASET_FD))
	    bmcr |= MII_BMCR_DUPLEX;
	mdio_write(skfd, MII_BMCR, bmcr);
    }

    if (!opt_restart && !opt_reset && !fixed_speed && !nway_advertise)
	show_basic_mii(skfd, mii->phy_id);

    return 0;
}

/*--------------------------------------------------------------------*/

static void watch_one_xcvr(int skfd, char *ifname, int index)
{
    struct mii_data *mii = (struct mii_data *)&ifr.ifr_data;
    static int status[MAX_ETH] = { 0, /* ... */ };
    int now;

    /* Get the vitals from the interface. */
    strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
    if (ioctl(skfd, SIOCGMIIPHY, &ifr) < 0) {
	if (errno != ENODEV)
	    fprintf(stderr, "SIOCGMIIPHY on '%s' failed: %s\n",
		    ifname, strerror(errno));
	return;
    }
    now = (mdio_read(skfd, MII_BMCR) |
	   (mdio_read(skfd, MII_BMSR) << 16));
    if (status[index] && (status[index] != now))
	show_basic_mii(skfd, mii->phy_id);
    status[index] = now;
}

/*--------------------------------------------------------------------*/

const char *usage =
"usage: %s [-VvRrwl] [-A media,... | -F media] [interface ...]
       -V, --version               display version information
       -v, --verbose               more verbose output
       -R, --reset                 reset MII to poweron state
       -r, --restart               restart autonegotiation
       -w, --watch                 monitor for link status changes
       -l, --log                   with -w, write events to syslog
       -A, --advertise=media,...   advertise only specified media
       -F, --force=media           force specified media technology
media: 100baseT4, 100baseTx-FD, 100baseTx-HD, 10baseT-FD, 10baseT-HD,
       (to advertise both HD and FD) 100baseTx, 10baseT\n";

int main(int argc, char **argv)
{
    int i, c, ret, errflag = 0;
    char s[6];
    
    while ((c = getopt_long(argc, argv, "A:F:p:lrRvVw?", longopts, 0)) != EOF)
	switch (c) {
	case 'A': nway_advertise = parse_media(optarg); break;
	case 'F': fixed_speed = parse_media(optarg); break;
	case 'p': override_phy = atoi(optarg); break;
	case 'r': opt_restart++;	break;
	case 'R': opt_reset++;		break;
	case 'v': verbose++;		break;
	case 'V': opt_version++;	break;
	case 'w': opt_watch++;		break;
	case 'l': opt_log++;		break;
	case '?': errflag++;
	}
    /* Check for a few inappropriate option combinations */
    if (opt_watch) verbose = 0;
    if (errflag || (fixed_speed & (fixed_speed-1)) ||
	(fixed_speed && (opt_restart || nway_advertise))) {
	fprintf(stderr, usage, argv[0]);
	return 2;
    }

    if (opt_version)
	printf(version);

    /* Open a basic socket. */
    if ((skfd = socket(AF_INET, SOCK_DGRAM,0)) < 0) {
	perror("socket");
	exit(-1);
    }

    /* No remaining args means show all interfaces. */
    if (optind == argc) {
	ret = 1;
	for (i = 0; i < MAX_ETH; i++) {
	    sprintf(s, "eth%d", i);
	    ret &= do_one_xcvr(skfd, s, 1);
	}
	if (ret)
	    fprintf(stderr, "no MII interfaces found\n");
    } else {
	ret = 0;
	for (i = optind; i < argc; i++) {
	    ret |= do_one_xcvr(skfd, argv[i], 0);
	}
    }

    if (opt_watch && (ret == 0)) {
	while (1) {
	    sleep(1);
	    if (optind == argc) {
		for (i = 0; i < MAX_ETH; i++) {
		    sprintf(s, "eth%d", i);
		    watch_one_xcvr(skfd, s, i);
		}
	    } else {
		for (i = optind; i < argc; i++)
		    watch_one_xcvr(skfd, argv[i], i-optind);
	    }
	}
    }

    close(skfd);
    return ret;
}