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 2010 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  *
25  * Copyright 2015 Garrett D'Amore <garrett@damore.org>
26  */
27 
28 #include <stdlib.h>
29 #include <string.h>
30 #include <strings.h>
31 #include <sys/types.h>
32 #include <libdladm_impl.h>
33 #include <libdllink.h>
34 #include <libdlstat.h>
35 #include <libdlether.h>
36 
37 /*
38  * Ethernet administration library.
39  */
40 
41 /*
42  * kstat names for extracting attributes.
43  */
44 typedef struct ether_spdx_s {
45 	dladm_ether_spdx_t eth_spdx;
46 	char *eth_spdx_stat_name;
47 } ether_spdx_t;
48 
49 static ether_spdx_t cap_spdx[] = {
50 	{{100000, LINK_DUPLEX_FULL}, "cap_100gfdx"},
51 	{{50000, LINK_DUPLEX_FULL}, "cap_50gfdx"},
52 	{{40000, LINK_DUPLEX_FULL}, "cap_40gfdx"},
53 	{{25000, LINK_DUPLEX_FULL}, "cap_25gfdx"},
54 	{{10000, LINK_DUPLEX_FULL}, "cap_10gfdx"},
55 	{{5000, LINK_DUPLEX_FULL}, "cap_5000fdx"},
56 	{{2500, LINK_DUPLEX_FULL}, "cap_2500fdx"},
57 	{{1000, LINK_DUPLEX_FULL}, "cap_1000fdx"},
58 	{{1000, LINK_DUPLEX_HALF}, "cap_1000hdx"},
59 	{{100, LINK_DUPLEX_FULL}, "cap_100fdx"},
60 	{{100, LINK_DUPLEX_HALF}, "cap_100hdx"},
61 	{{10, LINK_DUPLEX_FULL}, "cap_10fdx"},
62 	{{10, LINK_DUPLEX_HALF}, "cap_10hdx"},
63 	{{0, LINK_DUPLEX_UNKNOWN}, NULL}
64 };
65 
66 static ether_spdx_t adv_cap_spdx[] = {
67 	{{100000, LINK_DUPLEX_FULL}, "adv_cap_100gfdx"},
68 	{{50000, LINK_DUPLEX_FULL}, "adv_cap_50gfdx"},
69 	{{40000, LINK_DUPLEX_FULL}, "adv_cap_40gfdx"},
70 	{{25000, LINK_DUPLEX_FULL}, "adv_cap_25gfdx"},
71 	{{10000, LINK_DUPLEX_FULL}, "adv_cap_10gfdx"},
72 	{{5000, LINK_DUPLEX_FULL}, "adv_cap_5000fdx"},
73 	{{2500, LINK_DUPLEX_FULL}, "adv_cap_2500fdx"},
74 	{{1000, LINK_DUPLEX_FULL}, "adv_cap_1000fdx"},
75 	{{1000, LINK_DUPLEX_HALF}, "adv_cap_1000hdx"},
76 	{{100, LINK_DUPLEX_FULL}, "adv_cap_100fdx"},
77 	{{100, LINK_DUPLEX_HALF}, "adv_cap_100hdx"},
78 	{{10, LINK_DUPLEX_FULL}, "adv_cap_10fdx"},
79 	{{10, LINK_DUPLEX_HALF}, "adv_cap_10hdx"},
80 	{{0, LINK_DUPLEX_UNKNOWN}, NULL}
81 };
82 
83 static ether_spdx_t lp_cap_spdx[] = {
84 	{{100000, LINK_DUPLEX_FULL}, "lp_cap_100gfdx"},
85 	{{50000, LINK_DUPLEX_FULL}, "lp_cap_50gfdx"},
86 	{{40000, LINK_DUPLEX_FULL}, "lp_cap_40gfdx"},
87 	{{25000, LINK_DUPLEX_FULL}, "lp_cap_25gfdx"},
88 	{{10000, LINK_DUPLEX_FULL}, "lp_cap_10gfdx"},
89 	{{5000, LINK_DUPLEX_FULL}, "lp_cap_5000fdx"},
90 	{{2500, LINK_DUPLEX_FULL}, "lp_cap_2500fdx"},
91 	{{1000, LINK_DUPLEX_FULL}, "lp_cap_1000fdx"},
92 	{{1000, LINK_DUPLEX_HALF}, "lp_cap_1000hdx"},
93 	{{100, LINK_DUPLEX_FULL}, "lp_cap_100fdx"},
94 	{{100, LINK_DUPLEX_HALF}, "lp_cap_100hdx"},
95 	{{10, LINK_DUPLEX_FULL}, "lp_cap_10fdx"},
96 	{{10, LINK_DUPLEX_HALF}, "lp_cap_10hdx"},
97 	{{0, LINK_DUPLEX_UNKNOWN}, NULL}
98 };
99 
100 typedef struct attr_kstat_s {
101 	char *autoneg_stat;
102 	char *pause_stat;
103 	char *asmpause_stat;
104 	char *fault_stat;
105 	ether_spdx_t *spdx_stat;
106 } attr_kstat_t;
107 
108 static attr_kstat_t attrstat[] =  {
109 	{"link_autoneg",	/* current */
110 	    "link_pause",	"link_asmpause",	NULL,
111 	    NULL},
112 
113 	{"cap_autoneg",		/* capable */
114 	    "cap_pause",	"cap_asmpause",		"cap_rem_fault",
115 	    cap_spdx},
116 
117 	{"adv_cap_autoneg",	/* advertised */
118 	    "adv_cap_pause",	"adv_cap_asmpause",	"adv_rem_fault",
119 	    adv_cap_spdx},
120 
121 	{"lp_cap_autoneg",	/* peer advertised */
122 	    "lp_cap_pause",	"lp_cap_asmpause",	"lp_rem_fault",
123 	    lp_cap_spdx}
124 };
125 
126 /*
127  * Get the speed-duplex stats specified in the ether_spdx_t table passed in
128  * by querying the appropriate kstat for each entry in the table.
129  */
130 static dladm_status_t
i_dladm_get_spdx(dladm_handle_t handle,datalink_id_t linkid,dladm_ether_attr_t * eattr,ether_spdx_t * spdx_stat)131 i_dladm_get_spdx(dladm_handle_t handle, datalink_id_t linkid,
132     dladm_ether_attr_t *eattr, ether_spdx_t *spdx_stat)
133 {
134 	int		i, nspdx = 0;
135 	uint32_t	speed;
136 	dladm_status_t	status;
137 	void		*ptr;
138 
139 	eattr->le_spdx = NULL;
140 	for (i = 0; spdx_stat[i].eth_spdx_stat_name != NULL; i++) {
141 		if ((status = dladm_get_single_mac_stat(handle, linkid,
142 		    spdx_stat[i].eth_spdx_stat_name,
143 		    KSTAT_DATA_UINT32, &speed)) != DLADM_STATUS_OK) {
144 
145 			if (status == DLADM_STATUS_NOTFOUND) {
146 				/*
147 				 * Missing statistic.
148 				 * Skip this one and try the rest.
149 				 */
150 				continue;
151 			} else {
152 				free(eattr->le_spdx);
153 				eattr->le_num_spdx = 0;
154 				return (status);
155 			}
156 		}
157 		if (speed == 0)
158 			continue;
159 		nspdx++;
160 		ptr = realloc(eattr->le_spdx,
161 		    nspdx * sizeof (dladm_ether_spdx_t));
162 		if (ptr != NULL) {
163 			eattr->le_spdx = ptr;
164 		} else {
165 			free(eattr->le_spdx);
166 			eattr->le_num_spdx = 0;
167 			return (DLADM_STATUS_NOMEM);
168 		}
169 		eattr->le_spdx[nspdx - 1] = spdx_stat[i].eth_spdx;
170 	}
171 	eattr->le_num_spdx = nspdx;
172 	return (DLADM_STATUS_OK);
173 }
174 
175 /*
176  * Returns "yes" or "no" based on the autonegotion capabilities
177  * for the parameter type indicated by ptype. The permissible
178  * values for ptype are CURRENT, CAPABLE, ADV, PEERADV.
179  */
180 char *
dladm_ether_autoneg2str(char * buf,size_t buflen,dladm_ether_info_t * eattr,int ptype)181 dladm_ether_autoneg2str(char *buf, size_t buflen, dladm_ether_info_t *eattr,
182     int ptype)
183 {
184 	boolean_t autoneg = eattr->lei_attr[ptype].le_autoneg;
185 
186 	(void) strlcpy(buf, (autoneg ? "yes" : "no"), buflen);
187 	return (buf);
188 }
189 
190 /*
191  * Returns {"bi", "tx", "none"} based on the flow-control capabilities
192  * for the parameter type indicated by ptype. The permissible
193  * values for ptype are CURRENT, CAPABLE, ADV, PEERADV.
194  */
195 char *
dladm_ether_pause2str(char * buf,size_t buflen,dladm_ether_info_t * eattr,int ptype)196 dladm_ether_pause2str(char *buf, size_t buflen, dladm_ether_info_t *eattr,
197     int ptype)
198 {
199 	boolean_t pause = eattr->lei_attr[ptype].le_pause;
200 	boolean_t asmpause = eattr->lei_attr[ptype].le_asmpause;
201 
202 	if (pause)
203 		(void) strlcpy(buf, "bi", buflen);
204 	else if (asmpause)
205 		(void) strlcpy(buf, "tx", buflen);
206 	else
207 		(void) strlcpy(buf, "none", buflen);
208 	return (buf);
209 }
210 
211 /*
212  * For a given param type, parse the list of speed-duplex pairs in
213  * the dladm_ether_info_t and return a  comma-separated string formatted
214  * as <speed><speed-unit-char>-<duplex-chars> where <speed> is the value of
215  * speed, in units specifid by the <speed-unit-char> which is one
216  * of 'M' (Mbits/sec) or 'G' (Gigabits/sec).  The permissible values of
217  * <duplex-chars> are 'u' (indicating duplex is "unknown") or one/both of
218  * 'f', 'h' (indicating full-duplex and half-duplex respectively)
219  */
220 extern char *
dladm_ether_spdx2str(char * buf,size_t buflen,dladm_ether_info_t * eattr,int ptype)221 dladm_ether_spdx2str(char *buf, size_t buflen, dladm_ether_info_t *eattr,
222     int ptype)
223 {
224 	int		i, j;
225 	boolean_t	is_full, is_half;
226 	int		speed;
227 	char		speed_unit;
228 	char		tmpbuf[DLADM_STRSIZE];
229 	dladm_ether_spdx_t *spdx;
230 	uint32_t	nspdx;
231 
232 	spdx = eattr->lei_attr[ptype].le_spdx;
233 	nspdx = eattr->lei_attr[ptype].le_num_spdx;
234 	for (i = 0; i < nspdx; i++) {
235 
236 		speed = spdx[i].lesd_speed;
237 
238 		/*
239 		 * if we have already covered this speed for
240 		 * the <other>-duplex case before this, skip it
241 		 */
242 		for (j = 0; j < i; j++) {
243 			if (speed == spdx[j].lesd_speed)
244 				break;
245 		}
246 		if (j < i)
247 			continue;
248 
249 		if ((speed % 1000) == 0) {
250 			speed = speed/1000;
251 			speed_unit = 'G';
252 		} else {
253 			speed_unit = 'M';
254 		}
255 		(void) snprintf(tmpbuf, DLADM_STRSIZE, "%d%c",
256 		    speed, speed_unit);
257 		if (i > 0)
258 			(void) strncat(buf, ",", buflen);
259 		(void) strncat(buf, tmpbuf, buflen);
260 
261 		is_full = is_half = B_FALSE;
262 		/*
263 		 * Find all the supported duplex values for this speed.
264 		 */
265 		for (j = 0; j < nspdx; j++) {
266 			if (spdx[j].lesd_speed != spdx[i].lesd_speed)
267 				continue;
268 			if (spdx[j].lesd_duplex == LINK_DUPLEX_FULL)
269 				is_full = B_TRUE;
270 			if (spdx[j].lesd_duplex == LINK_DUPLEX_HALF)
271 				is_half = B_TRUE;
272 		}
273 		if (is_full && is_half)
274 			(void) strncat(buf, "-fh", buflen);
275 		else if (is_full)
276 			(void) strncat(buf, "-f", buflen);
277 		else if (is_half)
278 			(void) strncat(buf, "-h", buflen);
279 	}
280 	return (buf);
281 }
282 
283 /*
284  * Extract Ethernet attributes of the link specified by linkid.
285  * Information for the CURRENT, CAPABLE, ADV and PEERADV parameter
286  * types is extracted into the lei_attr[] entries in the dladm_ether_info_t.
287  * On succesful return, the memory allocated in this function should be
288  * freed by calling dladm_ether_info_done().
289  */
290 extern dladm_status_t
dladm_ether_info(dladm_handle_t handle,datalink_id_t linkid,dladm_ether_info_t * eattr)291 dladm_ether_info(dladm_handle_t handle, datalink_id_t linkid,
292     dladm_ether_info_t *eattr)
293 {
294 	uint32_t	autoneg, pause, asmpause, fault;
295 	uint64_t	sp64;
296 	dladm_status_t	status;
297 	int		i;
298 	link_duplex_t	link_duplex;
299 
300 	bzero(eattr, sizeof (*eattr));
301 	status = dladm_datalink_id2info(handle, linkid, NULL, NULL, NULL,
302 	    eattr->lei_linkname, sizeof (eattr->lei_linkname));
303 	if (status != DLADM_STATUS_OK)
304 		goto bail;
305 
306 	/* get current values of speed, duplex, state of link */
307 	eattr->lei_attr[CURRENT].le_num_spdx = 1;
308 	eattr->lei_attr[CURRENT].le_spdx = malloc(sizeof (dladm_ether_spdx_t));
309 	if (eattr->lei_attr[CURRENT].le_spdx == NULL) {
310 		status = DLADM_STATUS_NOMEM;
311 		goto bail;
312 	}
313 
314 	if ((status = dladm_get_single_mac_stat(handle, linkid, "ifspeed",
315 	    KSTAT_DATA_UINT64, &sp64)) != DLADM_STATUS_OK)
316 		goto bail;
317 
318 	if ((status = dladm_get_single_mac_stat(handle, linkid, "link_duplex",
319 	    KSTAT_DATA_UINT32, &link_duplex)) != DLADM_STATUS_OK)
320 		goto bail;
321 
322 	eattr->lei_attr[CURRENT].le_spdx->lesd_speed = (int)(sp64/1000000ull);
323 	eattr->lei_attr[CURRENT].le_spdx->lesd_duplex = link_duplex;
324 
325 	status = dladm_get_state(handle, linkid, &eattr->lei_state);
326 	if (status != DLADM_STATUS_OK)
327 		goto bail;
328 
329 	/* get the auto, pause, asmpause, fault values */
330 	for (i = CURRENT; i <= PEERADV; i++)  {
331 
332 		status = dladm_get_single_mac_stat(handle, linkid,
333 		    attrstat[i].autoneg_stat, KSTAT_DATA_UINT32, &autoneg);
334 		if (status != DLADM_STATUS_OK)
335 			goto bail;
336 
337 		status = dladm_get_single_mac_stat(handle, linkid,
338 		    attrstat[i].pause_stat, KSTAT_DATA_UINT32, &pause);
339 		if (status != DLADM_STATUS_OK)
340 			goto bail;
341 
342 		status = dladm_get_single_mac_stat(handle, linkid,
343 		    attrstat[i].asmpause_stat, KSTAT_DATA_UINT32, &asmpause);
344 		if (status != DLADM_STATUS_OK)
345 			goto bail;
346 
347 		eattr->lei_attr[i].le_autoneg = (autoneg != 0);
348 		eattr->lei_attr[i].le_pause = (pause != 0);
349 		eattr->lei_attr[i].le_asmpause = (asmpause != 0);
350 
351 		if (i == CURRENT)
352 			continue;
353 		status = dladm_get_single_mac_stat(handle, linkid,
354 		    attrstat[i].fault_stat, KSTAT_DATA_UINT32, &fault);
355 		if (status != DLADM_STATUS_OK)
356 			goto bail;
357 		eattr->lei_attr[i].le_fault = (pause != 0);
358 
359 		/* get all the supported speed/duplex values */
360 		status = i_dladm_get_spdx(handle, linkid, &eattr->lei_attr[i],
361 		    attrstat[i].spdx_stat);
362 		if (status != DLADM_STATUS_OK)
363 			goto bail;
364 	}
365 	eattr->lei_attr[CURRENT].le_fault =
366 	    eattr->lei_attr[ADV].le_fault || eattr->lei_attr[PEERADV].le_fault;
367 bail:
368 	if (status != DLADM_STATUS_OK)
369 		dladm_ether_info_done(eattr);
370 	return (status);
371 }
372 
373 extern void
dladm_ether_info_done(dladm_ether_info_t * eattr)374 dladm_ether_info_done(dladm_ether_info_t *eattr)
375 {
376 	int i;
377 
378 	for (i = CURRENT; i <= PEERADV; i++) {
379 		free(eattr->lei_attr[i].le_spdx);
380 		eattr->lei_attr[i].le_spdx = NULL;
381 	}
382 }
383