xref: /illumos-gate/usr/src/uts/common/io/mac/plugins/mac_ether.c (revision 4870e0a7381ec2ec57437062574e6ddc3dd48d7f)
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 2009 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 /*
29  * Ethernet MAC plugin for the Nemo mac module
30  */
31 
32 #include <sys/types.h>
33 #include <sys/modctl.h>
34 #include <sys/dlpi.h>
35 #include <sys/dld_impl.h>
36 #include <sys/mac_ether.h>
37 #include <sys/ethernet.h>
38 #include <sys/byteorder.h>
39 #include <sys/strsun.h>
40 #include <inet/common.h>
41 
42 static uint8_t	ether_brdcst[] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
43 
44 static mac_stat_info_t ether_stats[] = {
45 	/* RFC1643 stats */
46 	{ ETHER_STAT_ALIGN_ERRORS, "align_errors", KSTAT_DATA_UINT32,	0 },
47 	{ ETHER_STAT_FCS_ERRORS, "fcs_errors", KSTAT_DATA_UINT32,	0 },
48 	{ ETHER_STAT_FIRST_COLLISIONS, "first_collisions", KSTAT_DATA_UINT32,
49 	    0 },
50 	{ ETHER_STAT_MULTI_COLLISIONS, "multi_collisions", KSTAT_DATA_UINT32,
51 	    0 },
52 	{ ETHER_STAT_SQE_ERRORS, "sqe_errors", KSTAT_DATA_UINT32,	0},
53 	{ ETHER_STAT_DEFER_XMTS, "defer_xmts", KSTAT_DATA_UINT32,	0},
54 	{ ETHER_STAT_TX_LATE_COLLISIONS, "tx_late_collisions",
55 	    KSTAT_DATA_UINT32, 0 },
56 	{ ETHER_STAT_EX_COLLISIONS, "ex_collisions", KSTAT_DATA_UINT32,	0 },
57 	{ ETHER_STAT_MACXMT_ERRORS, "macxmt_errors", KSTAT_DATA_UINT32,	0 },
58 	{ ETHER_STAT_CARRIER_ERRORS, "carrier_errors", KSTAT_DATA_UINT32, 0 },
59 	{ ETHER_STAT_TOOLONG_ERRORS, "toolong_errors", KSTAT_DATA_UINT32, 0 },
60 	{ ETHER_STAT_MACRCV_ERRORS, "macrcv_errors", KSTAT_DATA_UINT32, 0 },
61 	{ ETHER_STAT_TOOSHORT_ERRORS, "runt_errors", KSTAT_DATA_UINT32,	0 },
62 	{ ETHER_STAT_JABBER_ERRORS, "jabber_errors", KSTAT_DATA_UINT32,	0 },
63 
64 	/* Statistics described in the ieee802.3(5) man page */
65 	{ ETHER_STAT_XCVR_ADDR, "xcvr_addr", KSTAT_DATA_UINT32,		0 },
66 	{ ETHER_STAT_XCVR_ID, "xcvr_id", KSTAT_DATA_UINT32, 		0 },
67 	{ ETHER_STAT_XCVR_INUSE, "xcvr_inuse", KSTAT_DATA_UINT32,	0 },
68 	{ ETHER_STAT_CAP_5000FDX, "cap_5000fdx", KSTAT_DATA_UINT32,	0 },
69 	{ ETHER_STAT_CAP_2500FDX, "cap_2500fdx", KSTAT_DATA_UINT32,	0 },
70 	{ ETHER_STAT_CAP_100GFDX, "cap_100gfdx", KSTAT_DATA_UINT32,	0 },
71 	{ ETHER_STAT_CAP_40GFDX, "cap_40gfdx", KSTAT_DATA_UINT32,	0 },
72 	{ ETHER_STAT_CAP_10GFDX, "cap_10gfdx", KSTAT_DATA_UINT32,	0 },
73 	{ ETHER_STAT_CAP_1000FDX, "cap_1000fdx", KSTAT_DATA_UINT32,	0 },
74 	{ ETHER_STAT_CAP_1000HDX, "cap_1000hdx", KSTAT_DATA_UINT32,	0 },
75 	{ ETHER_STAT_CAP_100T4, "cap_100T4", KSTAT_DATA_UINT32,		0 },
76 	{ ETHER_STAT_CAP_100FDX, "cap_100fdx", KSTAT_DATA_UINT32,	0 },
77 	{ ETHER_STAT_CAP_100HDX, "cap_100hdx", KSTAT_DATA_UINT32,	0 },
78 	{ ETHER_STAT_CAP_10FDX, "cap_10fdx", KSTAT_DATA_UINT32,		0 },
79 	{ ETHER_STAT_CAP_10HDX, "cap_10hdx", KSTAT_DATA_UINT32,		0 },
80 	{ ETHER_STAT_CAP_ASMPAUSE, "cap_asmpause", KSTAT_DATA_UINT32,	0 },
81 	{ ETHER_STAT_CAP_PAUSE, "cap_pause", KSTAT_DATA_UINT32,		0 },
82 	{ ETHER_STAT_CAP_AUTONEG, "cap_autoneg", KSTAT_DATA_UINT32,	0 },
83 	{ ETHER_STAT_CAP_REMFAULT, "cap_rem_fault", KSTAT_DATA_UINT32,	0 },
84 	{ ETHER_STAT_ADV_CAP_5000FDX, "adv_cap_5000fdx", KSTAT_DATA_UINT32, 0 },
85 	{ ETHER_STAT_ADV_CAP_2500FDX, "adv_cap_2500fdx", KSTAT_DATA_UINT32, 0 },
86 	{ ETHER_STAT_ADV_CAP_100GFDX, "adv_cap_100gfdx", KSTAT_DATA_UINT32, 0 },
87 	{ ETHER_STAT_ADV_CAP_40GFDX, "adv_cap_40gfdx", KSTAT_DATA_UINT32, 0 },
88 	{ ETHER_STAT_ADV_CAP_10GFDX, "adv_cap_10gfdx", KSTAT_DATA_UINT32, 0 },
89 	{ ETHER_STAT_ADV_CAP_1000FDX, "adv_cap_1000fdx", KSTAT_DATA_UINT32, 0 },
90 	{ ETHER_STAT_ADV_CAP_1000HDX, "adv_cap_1000hdx", KSTAT_DATA_UINT32, 0 },
91 	{ ETHER_STAT_ADV_CAP_100T4, "adv_cap_100T4", KSTAT_DATA_UINT32,	0 },
92 	{ ETHER_STAT_ADV_CAP_100FDX, "adv_cap_100fdx", KSTAT_DATA_UINT32, 0},
93 	{ ETHER_STAT_ADV_CAP_100HDX, "adv_cap_100hdx", KSTAT_DATA_UINT32, 0},
94 	{ ETHER_STAT_ADV_CAP_10FDX, "adv_cap_10fdx", KSTAT_DATA_UINT32,	0 },
95 	{ ETHER_STAT_ADV_CAP_10HDX, "adv_cap_10hdx", KSTAT_DATA_UINT32,	0 },
96 	{ ETHER_STAT_ADV_CAP_ASMPAUSE, "adv_cap_asmpause", KSTAT_DATA_UINT32,
97 	    0 },
98 	{ ETHER_STAT_ADV_CAP_PAUSE, "adv_cap_pause", KSTAT_DATA_UINT32,	0 },
99 	{ ETHER_STAT_ADV_CAP_AUTONEG, "adv_cap_autoneg", KSTAT_DATA_UINT32, 0 },
100 	{ ETHER_STAT_ADV_REMFAULT, "adv_rem_fault", KSTAT_DATA_UINT32,	0 },
101 	{ ETHER_STAT_LP_CAP_5000FDX, "lp_cap_5000fdx", KSTAT_DATA_UINT32, 0 },
102 	{ ETHER_STAT_LP_CAP_2500FDX, "lp_cap_2500fdx", KSTAT_DATA_UINT32, 0 },
103 	{ ETHER_STAT_LP_CAP_100GFDX, "lp_cap_100gfdx", KSTAT_DATA_UINT32, 0 },
104 	{ ETHER_STAT_LP_CAP_40GFDX, "lp_cap_40gfdx", KSTAT_DATA_UINT32, 0 },
105 	{ ETHER_STAT_LP_CAP_10GFDX, "lp_cap_10gfdx", KSTAT_DATA_UINT32, 0 },
106 	{ ETHER_STAT_LP_CAP_1000FDX, "lp_cap_1000fdx", KSTAT_DATA_UINT32, 0 },
107 	{ ETHER_STAT_LP_CAP_1000HDX, "lp_cap_1000hdx", KSTAT_DATA_UINT32, 0 },
108 	{ ETHER_STAT_LP_CAP_100T4, "lp_cap_100T4", KSTAT_DATA_UINT32,	0 },
109 	{ ETHER_STAT_LP_CAP_100FDX, "lp_cap_100fdx", KSTAT_DATA_UINT32,	0 },
110 	{ ETHER_STAT_LP_CAP_100HDX, "lp_cap_100hdx", KSTAT_DATA_UINT32,	0 },
111 	{ ETHER_STAT_LP_CAP_10FDX, "lp_cap_10fdx", KSTAT_DATA_UINT32,	0 },
112 	{ ETHER_STAT_LP_CAP_10HDX, "lp_cap_10hdx", KSTAT_DATA_UINT32,	0 },
113 	{ ETHER_STAT_LP_CAP_ASMPAUSE, "lp_cap_asmpause", KSTAT_DATA_UINT32, 0 },
114 	{ ETHER_STAT_LP_CAP_PAUSE, "lp_cap_pause", KSTAT_DATA_UINT32,	0 },
115 	{ ETHER_STAT_LP_CAP_AUTONEG, "lp_cap_autoneg", KSTAT_DATA_UINT32, 0 },
116 	{ ETHER_STAT_LP_REMFAULT, "lp_rem_fault", KSTAT_DATA_UINT32,	0 },
117 	{ ETHER_STAT_LINK_ASMPAUSE, "link_asmpause", KSTAT_DATA_UINT32,	0 },
118 	{ ETHER_STAT_LINK_PAUSE, "link_pause", KSTAT_DATA_UINT32,	0 },
119 	{ ETHER_STAT_LINK_AUTONEG, "link_autoneg", KSTAT_DATA_UINT32,	0 },
120 	{ ETHER_STAT_LINK_DUPLEX, "link_duplex", KSTAT_DATA_UINT32,	0 }
121 };
122 
123 static struct modlmisc mac_ether_modlmisc = {
124 	&mod_miscops,
125 	"Ethernet MAC plugin"
126 };
127 
128 static struct modlinkage mac_ether_modlinkage = {
129 	MODREV_1,
130 	&mac_ether_modlmisc,
131 	NULL
132 };
133 
134 static mactype_ops_t mac_ether_type_ops;
135 
136 static mac_ndd_mapping_t  mac_ether_mapping[] = {
137 	{"adv_autoneg_cap",	MAC_PROP_AUTONEG, 0, 1,
138 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
139 
140 	{"adv_5000fdx_cap",	MAC_PROP_EN_5000FDX_CAP, 0, 1,
141 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
142 
143 	{"adv_2500fdx_cap",	MAC_PROP_EN_2500FDX_CAP, 0, 1,
144 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
145 
146 	{"adv_100gfdx_cap",	MAC_PROP_EN_100GFDX_CAP, 0, 1,
147 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
148 
149 	{"adv_40gfdx_cap",	MAC_PROP_EN_40GFDX_CAP, 0, 1,
150 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
151 
152 	{"adv_10gfdx_cap",	MAC_PROP_EN_10GFDX_CAP, 0, 1,
153 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
154 
155 	{"adv_1000fdx_cap",	MAC_PROP_EN_1000FDX_CAP, 0, 1,
156 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
157 
158 	{"adv_1000hdx_cap",	MAC_PROP_EN_1000HDX_CAP, 0, 1,
159 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
160 
161 	{"adv_100fdx_cap",	MAC_PROP_EN_100FDX_CAP, 0, 1,
162 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
163 
164 	{"adv_100hdx_cap",	MAC_PROP_EN_100HDX_CAP, 0, 1,
165 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
166 
167 	{"adv_10fdx_cap",	MAC_PROP_EN_10FDX_CAP, 0, 1,
168 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
169 
170 	{"adv_10hdx_cap",	MAC_PROP_EN_10HDX_CAP, 0, 1,
171 	    sizeof (uint8_t), MAC_PROP_PERM_RW},
172 
173 	{"adv_100T4_cap",	MAC_PROP_EN_100T4_CAP, 0, 1,
174 	    sizeof (uint8_t), MAC_PROP_PERM_READ},
175 
176 	{"link_status",		MAC_STAT_LINK_UP, 0, 1,
177 	    sizeof (long), MAC_PROP_FLAGS_RK},
178 
179 	{"link_speed",		MAC_PROP_SPEED, 0, LONG_MAX,
180 	    sizeof (uint64_t), MAC_PROP_PERM_READ},
181 
182 	{"link_duplex",		MAC_PROP_DUPLEX, 0, 2,
183 	    sizeof (link_duplex_t), MAC_PROP_PERM_READ},
184 
185 	{"autoneg_cap",		ETHER_STAT_CAP_AUTONEG, 0, 1,
186 	    sizeof (long), MAC_PROP_FLAGS_RK},
187 
188 	{"pause_cap",		ETHER_STAT_CAP_PAUSE, 0, 1,
189 	    sizeof (long), MAC_PROP_FLAGS_RK},
190 
191 	{"asym_pause_cap",	ETHER_STAT_CAP_ASMPAUSE, 0, 1,
192 	    sizeof (long), MAC_PROP_FLAGS_RK},
193 
194 	{"5000fdx_cap",		ETHER_STAT_CAP_5000FDX, 0, 1,
195 	    sizeof (long), MAC_PROP_FLAGS_RK},
196 
197 	{"2500fdx_cap",		ETHER_STAT_CAP_2500FDX, 0, 1,
198 	    sizeof (long), MAC_PROP_FLAGS_RK},
199 
200 	{"100gfdx_cap",		ETHER_STAT_CAP_100GFDX, 0, 1,
201 	    sizeof (long), MAC_PROP_FLAGS_RK},
202 
203 	{"40gfdx_cap",		ETHER_STAT_CAP_40GFDX, 0, 1,
204 	    sizeof (long), MAC_PROP_FLAGS_RK},
205 
206 	{"10gfdx_cap",		ETHER_STAT_CAP_10GFDX, 0, 1,
207 	    sizeof (long), MAC_PROP_FLAGS_RK},
208 
209 	{"1000fdx_cap",		ETHER_STAT_CAP_1000FDX, 0, 1,
210 	    sizeof (long), MAC_PROP_FLAGS_RK},
211 
212 	{"1000hdx_cap",		ETHER_STAT_CAP_1000HDX, 0, 1,
213 	    sizeof (long), MAC_PROP_FLAGS_RK},
214 
215 	{"100T4_cap",		ETHER_STAT_CAP_100T4, 0, 1,
216 	    sizeof (long), MAC_PROP_FLAGS_RK},
217 
218 	{"100fdx_cap",		ETHER_STAT_CAP_100FDX, 0, 1,
219 	    sizeof (long), MAC_PROP_FLAGS_RK},
220 
221 	{"100hdx_cap",		ETHER_STAT_CAP_100HDX, 0, 1,
222 	    sizeof (long), MAC_PROP_FLAGS_RK},
223 
224 	{"10fdx_cap",		ETHER_STAT_CAP_10FDX, 0, 1,
225 	    sizeof (long), MAC_PROP_FLAGS_RK},
226 
227 	{"10hdx_cap",		ETHER_STAT_CAP_10HDX, 0, 1,
228 	    sizeof (long), MAC_PROP_FLAGS_RK},
229 
230 	{"lp_autoneg_cap",	ETHER_STAT_LP_CAP_AUTONEG, 0, 1,
231 	    sizeof (long), MAC_PROP_FLAGS_RK},
232 
233 	{"lp_pause_cap",	ETHER_STAT_LP_CAP_PAUSE, 0, 1,
234 	    sizeof (long), MAC_PROP_FLAGS_RK},
235 
236 	{"lp_asym_pause_cap",	ETHER_STAT_LP_CAP_ASMPAUSE, 0, 1,
237 	    sizeof (long), MAC_PROP_FLAGS_RK},
238 
239 	{"lp_5000fdx_cap",	ETHER_STAT_LP_CAP_5000FDX, 0, 1,
240 	    sizeof (long), MAC_PROP_FLAGS_RK},
241 
242 	{"lp_2500fdx_cap",	ETHER_STAT_LP_CAP_2500FDX, 0, 1,
243 	    sizeof (long), MAC_PROP_FLAGS_RK},
244 
245 	{"lp_100gfdx_cap",	ETHER_STAT_LP_CAP_100GFDX, 0, 1,
246 	    sizeof (long), MAC_PROP_FLAGS_RK},
247 
248 	{"lp_40gfdx_cap",	ETHER_STAT_LP_CAP_40GFDX, 0, 1,
249 	    sizeof (long), MAC_PROP_FLAGS_RK},
250 
251 	{"lp_10gfdx_cap",	ETHER_STAT_LP_CAP_10GFDX, 0, 1,
252 	    sizeof (long), MAC_PROP_FLAGS_RK},
253 
254 	{"lp_1000hdx_cap",	ETHER_STAT_LP_CAP_1000HDX, 0, 1,
255 	    sizeof (long), MAC_PROP_FLAGS_RK},
256 
257 	{"lp_1000fdx_cap",	ETHER_STAT_LP_CAP_1000FDX, 0, 1,
258 	    sizeof (long), MAC_PROP_FLAGS_RK},
259 
260 	{"lp_100T4_cap",	ETHER_STAT_LP_CAP_100T4, 0, 1,
261 	    sizeof (long), MAC_PROP_FLAGS_RK},
262 
263 	{"lp_100fdx_cap",	ETHER_STAT_LP_CAP_100FDX, 0, 1,
264 	    sizeof (long), MAC_PROP_FLAGS_RK},
265 
266 	{"lp_100hdx_cap",	ETHER_STAT_LP_CAP_100HDX, 0, 1,
267 	    sizeof (long), MAC_PROP_FLAGS_RK},
268 
269 	{"lp_10fdx_cap",	ETHER_STAT_LP_CAP_10FDX, 0, 1,
270 	    sizeof (long), MAC_PROP_FLAGS_RK},
271 
272 	{"lp_10hdx_cap",	ETHER_STAT_LP_CAP_10HDX, 0, 1,
273 	    sizeof (long), MAC_PROP_FLAGS_RK},
274 
275 	{"link_autoneg",	ETHER_STAT_LINK_AUTONEG, 0, 1,
276 	    sizeof (long), MAC_PROP_FLAGS_RK}
277 
278 };
279 
280 
281 int
282 _init(void)
283 {
284 	mactype_register_t *mtrp;
285 	int	err;
286 
287 	if ((mtrp = mactype_alloc(MACTYPE_VERSION)) == NULL)
288 		return (ENOTSUP);
289 	mtrp->mtr_ident = MAC_PLUGIN_IDENT_ETHER;
290 	mtrp->mtr_ops = &mac_ether_type_ops;
291 	mtrp->mtr_mactype = DL_ETHER;
292 	mtrp->mtr_nativetype = DL_ETHER;
293 	mtrp->mtr_addrlen = ETHERADDRL;
294 	mtrp->mtr_brdcst_addr = ether_brdcst;
295 	mtrp->mtr_stats = ether_stats;
296 	mtrp->mtr_statcount = A_CNT(ether_stats);
297 	mtrp->mtr_mapping = mac_ether_mapping;
298 	mtrp->mtr_mappingcount = A_CNT(mac_ether_mapping);
299 	if ((err = mactype_register(mtrp)) == 0) {
300 		if ((err = mod_install(&mac_ether_modlinkage)) != 0)
301 			(void) mactype_unregister(MAC_PLUGIN_IDENT_ETHER);
302 	}
303 	mactype_free(mtrp);
304 	return (err);
305 }
306 
307 int
308 _fini(void)
309 {
310 	int	err;
311 
312 	if ((err = mactype_unregister(MAC_PLUGIN_IDENT_ETHER)) != 0)
313 		return (err);
314 	return (mod_remove(&mac_ether_modlinkage));
315 }
316 
317 int
318 _info(struct modinfo *modinfop)
319 {
320 	return (mod_info(&mac_ether_modlinkage, modinfop));
321 }
322 
323 /*
324  * MAC Type plugin operations
325  */
326 
327 /* ARGSUSED */
328 int
329 mac_ether_unicst_verify(const void *addr, void *mac_pdata)
330 {
331 	/* If it's not a group address, then it's a valid unicast address. */
332 	return (((((uint8_t *)addr)[0] & 0x01) != 0) ? EINVAL : 0);
333 }
334 
335 /* ARGSUSED */
336 int
337 mac_ether_multicst_verify(const void *addr, void *mac_pdata)
338 {
339 	/* The address must be a group address. */
340 	if ((((uint8_t *)addr)[0] & 0x01) == 0)
341 		return (EINVAL);
342 	/* The address must not be the media broadcast address. */
343 	if (bcmp(addr, ether_brdcst, ETHERADDRL) == 0)
344 		return (EINVAL);
345 	return (0);
346 }
347 
348 /*
349  * Check the legality of an Ethernet SAP value. The following values are
350  * allowed, as specified by PSARC 2003/150:
351  *
352  * 0..ETHERMTU (1500)					802 semantics
353  * ETHERTYPE_802_MIN (1536)..ETHERTYPE_MAX (65535)	ethertype semantics
354  *
355  * Note that SAP values less than or equal to ETHERMTU (1500) represent LLC
356  * channels. (See PSARC 2003/150).  We strictly use SAP 0 to represent LLC
357  * channels.
358  */
359 /* ARGSUSED */
360 boolean_t
361 mac_ether_sap_verify(uint32_t sap, uint32_t *bind_sap, void *mac_pdata)
362 {
363 	if (sap >= ETHERTYPE_802_MIN && sap <= ETHERTYPE_MAX) {
364 		if (bind_sap != NULL)
365 			*bind_sap = sap;
366 		return (B_TRUE);
367 	}
368 
369 	if (sap <= ETHERMTU) {
370 		if (bind_sap != NULL)
371 			*bind_sap = DLS_SAP_LLC;
372 		return (B_TRUE);
373 	}
374 	return (B_FALSE);
375 }
376 
377 /* ARGSUSED */
378 mblk_t *
379 mac_ether_header(const void *saddr, const void *daddr, uint32_t sap,
380     void *mac_pdata, mblk_t *payload, size_t extra_len)
381 {
382 	struct ether_header	*ehp;
383 	mblk_t			*mp;
384 	uint32_t		bind_sap;
385 
386 	if (!mac_ether_sap_verify(sap, &bind_sap, NULL))
387 		return (NULL);
388 
389 	mp = allocb(sizeof (struct ether_header) + extra_len, BPRI_HI);
390 	if (mp == NULL)
391 		return (NULL);
392 
393 	ehp = (void *)mp->b_rptr;
394 	bcopy(daddr, &(ehp->ether_dhost), ETHERADDRL);
395 	bcopy(saddr, &(ehp->ether_shost), ETHERADDRL);
396 
397 	/*
398 	 * sap <= ETHERMTU indicates that LLC is being used.  If that's the
399 	 * case, then the ether_type needs to be set to the payload length.
400 	 */
401 	if ((bind_sap == DLS_SAP_LLC) && (payload != NULL))
402 		sap = msgdsize(payload);
403 	ehp->ether_type = htons(sap);
404 
405 	mp->b_wptr += sizeof (struct ether_header);
406 	return (mp);
407 }
408 
409 /* ARGSUSED */
410 int
411 mac_ether_header_info(mblk_t *mp, void *mac_pdata, mac_header_info_t *hdr_info)
412 {
413 	struct ether_header	*ehp;
414 	uint16_t		ether_type;
415 
416 	if (MBLKL(mp) < sizeof (struct ether_header))
417 		return (EINVAL);
418 
419 	ehp = (void *)mp->b_rptr;
420 	ether_type = ntohs(ehp->ether_type);
421 
422 	hdr_info->mhi_hdrsize = sizeof (struct ether_header);
423 	hdr_info->mhi_daddr = (const uint8_t *)&(ehp->ether_dhost);
424 	hdr_info->mhi_saddr = (const uint8_t *)&(ehp->ether_shost);
425 	hdr_info->mhi_origsap = ether_type;
426 	hdr_info->mhi_bindsap = (ether_type > ETHERMTU) ?
427 	    ether_type : DLS_SAP_LLC;
428 	hdr_info->mhi_pktsize = (hdr_info->mhi_bindsap == DLS_SAP_LLC) ?
429 	    hdr_info->mhi_hdrsize + ether_type : 0;
430 
431 	if (mac_ether_unicst_verify(hdr_info->mhi_daddr, NULL) == 0)
432 		hdr_info->mhi_dsttype = MAC_ADDRTYPE_UNICAST;
433 	else if (mac_ether_multicst_verify(hdr_info->mhi_daddr, NULL) == 0)
434 		hdr_info->mhi_dsttype = MAC_ADDRTYPE_MULTICAST;
435 	else
436 		hdr_info->mhi_dsttype = MAC_ADDRTYPE_BROADCAST;
437 
438 	return (0);
439 }
440 
441 /*ARGSUSED3*/
442 void
443 mac_ether_link_details(char *buf, size_t sz, mac_handle_t mh, void *mac_pdata)
444 {
445 	link_duplex_t	duplex;
446 	uint64_t	speed;
447 
448 	duplex = mac_stat_get(mh, ETHER_STAT_LINK_DUPLEX);
449 	speed = mac_stat_get(mh, MAC_STAT_IFSPEED);
450 
451 	/* convert to Mbps */
452 	speed /= 1000000;
453 
454 	buf[0] = 0;
455 	(void) snprintf(buf, sz, "%u Mbps, %s duplex", (uint32_t)speed,
456 	    duplex == LINK_DUPLEX_FULL ? "full" :
457 	    duplex == LINK_DUPLEX_HALF ? "half" : "unknown");
458 }
459 
460 static mactype_ops_t mac_ether_type_ops = {
461 	MTOPS_LINK_DETAILS,
462 	mac_ether_unicst_verify,
463 	mac_ether_multicst_verify,
464 	mac_ether_sap_verify,
465 	mac_ether_header,
466 	mac_ether_header_info,
467 	NULL, 	/* pdata_verify */
468 	NULL,	/* header_cook */
469 	NULL,	/* header_uncook */
470 	mac_ether_link_details
471 };
472