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1/*******************************************************************************
2 *
3 * Intel Ethernet Controller XL710 Family Linux Driver
4 * Copyright(c) 2013 - 2014 Intel Corporation.
5 *
6 * This program is free software; you can redistribute it and/or modify it
7 * under the terms and conditions of the GNU General Public License,
8 * version 2, as published by the Free Software Foundation.
9 *
10 * This program is distributed in the hope it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * more details.
14 *
15 * You should have received a copy of the GNU General Public License along
16 * with this program. If not, see <http://www.gnu.org/licenses/>.
17 *
18 * The full GNU General Public License is included in this distribution in
19 * the file called "COPYING".
20 *
21 * Contact Information:
22 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
23 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
24 *
25 ******************************************************************************/
26
27#include "i40e_adminq.h"
28#include "i40e_prototype.h"
29#include "i40e_dcb.h"
30
31/**
32 * i40e_get_dcbx_status
33 * @hw: pointer to the hw struct
34 * @status: Embedded DCBX Engine Status
35 *
36 * Get the DCBX status from the Firmware
37 **/
38i40e_status i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
39{
40 u32 reg;
41
42 if (!status)
43 return I40E_ERR_PARAM;
44
45 reg = rd32(hw, I40E_PRTDCB_GENS);
46 *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
47 I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
48
49 return 0;
50}
51
52/**
53 * i40e_parse_ieee_etscfg_tlv
54 * @tlv: IEEE 802.1Qaz ETS CFG TLV
55 * @dcbcfg: Local store to update ETS CFG data
56 *
57 * Parses IEEE 802.1Qaz ETS CFG TLV
58 **/
59static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
60 struct i40e_dcbx_config *dcbcfg)
61{
62 struct i40e_dcb_ets_config *etscfg;
63 u8 *buf = tlv->tlvinfo;
64 u16 offset = 0;
65 u8 priority;
66 int i;
67
68 /* First Octet post subtype
69 * --------------------------
70 * |will-|CBS | Re- | Max |
71 * |ing | |served| TCs |
72 * --------------------------
73 * |1bit | 1bit|3 bits|3bits|
74 */
75 etscfg = &dcbcfg->etscfg;
76 etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
77 I40E_IEEE_ETS_WILLING_SHIFT);
78 etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
79 I40E_IEEE_ETS_CBS_SHIFT);
80 etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
81 I40E_IEEE_ETS_MAXTC_SHIFT);
82
83 /* Move offset to Priority Assignment Table */
84 offset++;
85
86 /* Priority Assignment Table (4 octets)
87 * Octets:| 1 | 2 | 3 | 4 |
88 * -----------------------------------------
89 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
90 * -----------------------------------------
91 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
92 * -----------------------------------------
93 */
94 for (i = 0; i < 4; i++) {
95 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
96 I40E_IEEE_ETS_PRIO_1_SHIFT);
97 etscfg->prioritytable[i * 2] = priority;
98 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
99 I40E_IEEE_ETS_PRIO_0_SHIFT);
100 etscfg->prioritytable[i * 2 + 1] = priority;
101 offset++;
102 }
103
104 /* TC Bandwidth Table (8 octets)
105 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
106 * ---------------------------------
107 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
108 * ---------------------------------
109 */
110 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
111 etscfg->tcbwtable[i] = buf[offset++];
112
113 /* TSA Assignment Table (8 octets)
114 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
115 * ---------------------------------
116 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
117 * ---------------------------------
118 */
119 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
120 etscfg->tsatable[i] = buf[offset++];
121}
122
123/**
124 * i40e_parse_ieee_etsrec_tlv
125 * @tlv: IEEE 802.1Qaz ETS REC TLV
126 * @dcbcfg: Local store to update ETS REC data
127 *
128 * Parses IEEE 802.1Qaz ETS REC TLV
129 **/
130static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
131 struct i40e_dcbx_config *dcbcfg)
132{
133 u8 *buf = tlv->tlvinfo;
134 u16 offset = 0;
135 u8 priority;
136 int i;
137
138 /* Move offset to priority table */
139 offset++;
140
141 /* Priority Assignment Table (4 octets)
142 * Octets:| 1 | 2 | 3 | 4 |
143 * -----------------------------------------
144 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
145 * -----------------------------------------
146 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
147 * -----------------------------------------
148 */
149 for (i = 0; i < 4; i++) {
150 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
151 I40E_IEEE_ETS_PRIO_1_SHIFT);
152 dcbcfg->etsrec.prioritytable[i*2] = priority;
153 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
154 I40E_IEEE_ETS_PRIO_0_SHIFT);
155 dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
156 offset++;
157 }
158
159 /* TC Bandwidth Table (8 octets)
160 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
161 * ---------------------------------
162 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
163 * ---------------------------------
164 */
165 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
166 dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
167
168 /* TSA Assignment Table (8 octets)
169 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
170 * ---------------------------------
171 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
172 * ---------------------------------
173 */
174 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
175 dcbcfg->etsrec.tsatable[i] = buf[offset++];
176}
177
178/**
179 * i40e_parse_ieee_pfccfg_tlv
180 * @tlv: IEEE 802.1Qaz PFC CFG TLV
181 * @dcbcfg: Local store to update PFC CFG data
182 *
183 * Parses IEEE 802.1Qaz PFC CFG TLV
184 **/
185static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
186 struct i40e_dcbx_config *dcbcfg)
187{
188 u8 *buf = tlv->tlvinfo;
189
190 /* ----------------------------------------
191 * |will-|MBC | Re- | PFC | PFC Enable |
192 * |ing | |served| cap | |
193 * -----------------------------------------
194 * |1bit | 1bit|2 bits|4bits| 1 octet |
195 */
196 dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
197 I40E_IEEE_PFC_WILLING_SHIFT);
198 dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
199 I40E_IEEE_PFC_MBC_SHIFT);
200 dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
201 I40E_IEEE_PFC_CAP_SHIFT);
202 dcbcfg->pfc.pfcenable = buf[1];
203}
204
205/**
206 * i40e_parse_ieee_app_tlv
207 * @tlv: IEEE 802.1Qaz APP TLV
208 * @dcbcfg: Local store to update APP PRIO data
209 *
210 * Parses IEEE 802.1Qaz APP PRIO TLV
211 **/
212static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
213 struct i40e_dcbx_config *dcbcfg)
214{
215 u16 typelength;
216 u16 offset = 0;
217 u16 length;
218 int i = 0;
219 u8 *buf;
220
221 typelength = ntohs(tlv->typelength);
222 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
223 I40E_LLDP_TLV_LEN_SHIFT);
224 buf = tlv->tlvinfo;
225
226 /* The App priority table starts 5 octets after TLV header */
227 length -= (sizeof(tlv->ouisubtype) + 1);
228
229 /* Move offset to App Priority Table */
230 offset++;
231
232 /* Application Priority Table (3 octets)
233 * Octets:| 1 | 2 | 3 |
234 * -----------------------------------------
235 * |Priority|Rsrvd| Sel | Protocol ID |
236 * -----------------------------------------
237 * Bits:|23 21|20 19|18 16|15 0|
238 * -----------------------------------------
239 */
240 while (offset < length) {
241 dcbcfg->app[i].priority = (u8)((buf[offset] &
242 I40E_IEEE_APP_PRIO_MASK) >>
243 I40E_IEEE_APP_PRIO_SHIFT);
244 dcbcfg->app[i].selector = (u8)((buf[offset] &
245 I40E_IEEE_APP_SEL_MASK) >>
246 I40E_IEEE_APP_SEL_SHIFT);
247 dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
248 buf[offset + 2];
249 /* Move to next app */
250 offset += 3;
251 i++;
252 if (i >= I40E_DCBX_MAX_APPS)
253 break;
254 }
255
256 dcbcfg->numapps = i;
257}
258
259/**
260 * i40e_parse_ieee_etsrec_tlv
261 * @tlv: IEEE 802.1Qaz TLV
262 * @dcbcfg: Local store to update ETS REC data
263 *
264 * Get the TLV subtype and send it to parsing function
265 * based on the subtype value
266 **/
267static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
268 struct i40e_dcbx_config *dcbcfg)
269{
270 u32 ouisubtype;
271 u8 subtype;
272
273 ouisubtype = ntohl(tlv->ouisubtype);
274 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
275 I40E_LLDP_TLV_SUBTYPE_SHIFT);
276 switch (subtype) {
277 case I40E_IEEE_SUBTYPE_ETS_CFG:
278 i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
279 break;
280 case I40E_IEEE_SUBTYPE_ETS_REC:
281 i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
282 break;
283 case I40E_IEEE_SUBTYPE_PFC_CFG:
284 i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
285 break;
286 case I40E_IEEE_SUBTYPE_APP_PRI:
287 i40e_parse_ieee_app_tlv(tlv, dcbcfg);
288 break;
289 default:
290 break;
291 }
292}
293
294/**
295 * i40e_parse_cee_pgcfg_tlv
296 * @tlv: CEE DCBX PG CFG TLV
297 * @dcbcfg: Local store to update ETS CFG data
298 *
299 * Parses CEE DCBX PG CFG TLV
300 **/
301static void i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv *tlv,
302 struct i40e_dcbx_config *dcbcfg)
303{
304 struct i40e_dcb_ets_config *etscfg;
305 u8 *buf = tlv->tlvinfo;
306 u16 offset = 0;
307 u8 priority;
308 int i;
309
310 etscfg = &dcbcfg->etscfg;
311
312 if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
313 etscfg->willing = 1;
314
315 etscfg->cbs = 0;
316 /* Priority Group Table (4 octets)
317 * Octets:| 1 | 2 | 3 | 4 |
318 * -----------------------------------------
319 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
320 * -----------------------------------------
321 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
322 * -----------------------------------------
323 */
324 for (i = 0; i < 4; i++) {
325 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_1_MASK) >>
326 I40E_CEE_PGID_PRIO_1_SHIFT);
327 etscfg->prioritytable[i * 2] = priority;
328 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_0_MASK) >>
329 I40E_CEE_PGID_PRIO_0_SHIFT);
330 etscfg->prioritytable[i * 2 + 1] = priority;
331 offset++;
332 }
333
334 /* PG Percentage Table (8 octets)
335 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
336 * ---------------------------------
337 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
338 * ---------------------------------
339 */
340 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
341 etscfg->tcbwtable[i] = buf[offset++];
342
343 /* Number of TCs supported (1 octet) */
344 etscfg->maxtcs = buf[offset];
345}
346
347/**
348 * i40e_parse_cee_pfccfg_tlv
349 * @tlv: CEE DCBX PFC CFG TLV
350 * @dcbcfg: Local store to update PFC CFG data
351 *
352 * Parses CEE DCBX PFC CFG TLV
353 **/
354static void i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv *tlv,
355 struct i40e_dcbx_config *dcbcfg)
356{
357 u8 *buf = tlv->tlvinfo;
358
359 if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
360 dcbcfg->pfc.willing = 1;
361
362 /* ------------------------
363 * | PFC Enable | PFC TCs |
364 * ------------------------
365 * | 1 octet | 1 octet |
366 */
367 dcbcfg->pfc.pfcenable = buf[0];
368 dcbcfg->pfc.pfccap = buf[1];
369}
370
371/**
372 * i40e_parse_cee_app_tlv
373 * @tlv: CEE DCBX APP TLV
374 * @dcbcfg: Local store to update APP PRIO data
375 *
376 * Parses CEE DCBX APP PRIO TLV
377 **/
378static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv,
379 struct i40e_dcbx_config *dcbcfg)
380{
381 u16 length, typelength, offset = 0;
382 struct i40e_cee_app_prio *app;
383 u8 i;
384
385 typelength = ntohs(tlv->hdr.typelen);
386 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
387 I40E_LLDP_TLV_LEN_SHIFT);
388
389 dcbcfg->numapps = length / sizeof(*app);
390
391 if (!dcbcfg->numapps)
392 return;
393
394 for (i = 0; i < dcbcfg->numapps; i++) {
395 u8 up, selector;
396
397 app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset);
398 for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) {
399 if (app->prio_map & BIT(up))
400 break;
401 }
402 dcbcfg->app[i].priority = up;
403
404 /* Get Selector from lower 2 bits, and convert to IEEE */
405 selector = (app->upper_oui_sel & I40E_CEE_APP_SELECTOR_MASK);
406 switch (selector) {
407 case I40E_CEE_APP_SEL_ETHTYPE:
408 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
409 break;
410 case I40E_CEE_APP_SEL_TCPIP:
411 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
412 break;
413 default:
414 /* Keep selector as it is for unknown types */
415 dcbcfg->app[i].selector = selector;
416 }
417
418 dcbcfg->app[i].protocolid = ntohs(app->protocol);
419 /* Move to next app */
420 offset += sizeof(*app);
421 }
422}
423
424/**
425 * i40e_parse_cee_tlv
426 * @tlv: CEE DCBX TLV
427 * @dcbcfg: Local store to update DCBX config data
428 *
429 * Get the TLV subtype and send it to parsing function
430 * based on the subtype value
431 **/
432static void i40e_parse_cee_tlv(struct i40e_lldp_org_tlv *tlv,
433 struct i40e_dcbx_config *dcbcfg)
434{
435 u16 len, tlvlen, sublen, typelength;
436 struct i40e_cee_feat_tlv *sub_tlv;
437 u8 subtype, feat_tlv_count = 0;
438 u32 ouisubtype;
439
440 ouisubtype = ntohl(tlv->ouisubtype);
441 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
442 I40E_LLDP_TLV_SUBTYPE_SHIFT);
443 /* Return if not CEE DCBX */
444 if (subtype != I40E_CEE_DCBX_TYPE)
445 return;
446
447 typelength = ntohs(tlv->typelength);
448 tlvlen = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
449 I40E_LLDP_TLV_LEN_SHIFT);
450 len = sizeof(tlv->typelength) + sizeof(ouisubtype) +
451 sizeof(struct i40e_cee_ctrl_tlv);
452 /* Return if no CEE DCBX Feature TLVs */
453 if (tlvlen <= len)
454 return;
455
456 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)tlv + len);
457 while (feat_tlv_count < I40E_CEE_MAX_FEAT_TYPE) {
458 typelength = ntohs(sub_tlv->hdr.typelen);
459 sublen = (u16)((typelength &
460 I40E_LLDP_TLV_LEN_MASK) >>
461 I40E_LLDP_TLV_LEN_SHIFT);
462 subtype = (u8)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
463 I40E_LLDP_TLV_TYPE_SHIFT);
464 switch (subtype) {
465 case I40E_CEE_SUBTYPE_PG_CFG:
466 i40e_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
467 break;
468 case I40E_CEE_SUBTYPE_PFC_CFG:
469 i40e_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
470 break;
471 case I40E_CEE_SUBTYPE_APP_PRI:
472 i40e_parse_cee_app_tlv(sub_tlv, dcbcfg);
473 break;
474 default:
475 return; /* Invalid Sub-type return */
476 }
477 feat_tlv_count++;
478 /* Move to next sub TLV */
479 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)sub_tlv +
480 sizeof(sub_tlv->hdr.typelen) +
481 sublen);
482 }
483}
484
485/**
486 * i40e_parse_org_tlv
487 * @tlv: Organization specific TLV
488 * @dcbcfg: Local store to update ETS REC data
489 *
490 * Currently only IEEE 802.1Qaz TLV is supported, all others
491 * will be returned
492 **/
493static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
494 struct i40e_dcbx_config *dcbcfg)
495{
496 u32 ouisubtype;
497 u32 oui;
498
499 ouisubtype = ntohl(tlv->ouisubtype);
500 oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
501 I40E_LLDP_TLV_OUI_SHIFT);
502 switch (oui) {
503 case I40E_IEEE_8021QAZ_OUI:
504 i40e_parse_ieee_tlv(tlv, dcbcfg);
505 break;
506 case I40E_CEE_DCBX_OUI:
507 i40e_parse_cee_tlv(tlv, dcbcfg);
508 break;
509 default:
510 break;
511 }
512}
513
514/**
515 * i40e_lldp_to_dcb_config
516 * @lldpmib: LLDPDU to be parsed
517 * @dcbcfg: store for LLDPDU data
518 *
519 * Parse DCB configuration from the LLDPDU
520 **/
521i40e_status i40e_lldp_to_dcb_config(u8 *lldpmib,
522 struct i40e_dcbx_config *dcbcfg)
523{
524 i40e_status ret = 0;
525 struct i40e_lldp_org_tlv *tlv;
526 u16 type;
527 u16 length;
528 u16 typelength;
529 u16 offset = 0;
530
531 if (!lldpmib || !dcbcfg)
532 return I40E_ERR_PARAM;
533
534 /* set to the start of LLDPDU */
535 lldpmib += ETH_HLEN;
536 tlv = (struct i40e_lldp_org_tlv *)lldpmib;
537 while (1) {
538 typelength = ntohs(tlv->typelength);
539 type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
540 I40E_LLDP_TLV_TYPE_SHIFT);
541 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
542 I40E_LLDP_TLV_LEN_SHIFT);
543 offset += sizeof(typelength) + length;
544
545 /* END TLV or beyond LLDPDU size */
546 if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
547 break;
548
549 switch (type) {
550 case I40E_TLV_TYPE_ORG:
551 i40e_parse_org_tlv(tlv, dcbcfg);
552 break;
553 default:
554 break;
555 }
556
557 /* Move to next TLV */
558 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
559 sizeof(tlv->typelength) +
560 length);
561 }
562
563 return ret;
564}
565
566/**
567 * i40e_aq_get_dcb_config
568 * @hw: pointer to the hw struct
569 * @mib_type: mib type for the query
570 * @bridgetype: bridge type for the query (remote)
571 * @dcbcfg: store for LLDPDU data
572 *
573 * Query DCB configuration from the Firmware
574 **/
575i40e_status i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
576 u8 bridgetype,
577 struct i40e_dcbx_config *dcbcfg)
578{
579 i40e_status ret = 0;
580 struct i40e_virt_mem mem;
581 u8 *lldpmib;
582
583 /* Allocate the LLDPDU */
584 ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
585 if (ret)
586 return ret;
587
588 lldpmib = (u8 *)mem.va;
589 ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
590 (void *)lldpmib, I40E_LLDPDU_SIZE,
591 NULL, NULL, NULL);
592 if (ret)
593 goto free_mem;
594
595 /* Parse LLDP MIB to get dcb configuration */
596 ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
597
598free_mem:
599 i40e_free_virt_mem(hw, &mem);
600 return ret;
601}
602
603/**
604 * i40e_cee_to_dcb_v1_config
605 * @cee_cfg: pointer to CEE v1 response configuration struct
606 * @dcbcfg: DCB configuration struct
607 *
608 * Convert CEE v1 configuration from firmware to DCB configuration
609 **/
610static void i40e_cee_to_dcb_v1_config(
611 struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
612 struct i40e_dcbx_config *dcbcfg)
613{
614 u16 status, tlv_status = le16_to_cpu(cee_cfg->tlv_status);
615 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
616 u8 i, tc, err;
617
618 /* CEE PG data to ETS config */
619 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
620
621 for (i = 0; i < 4; i++) {
622 tc = (u8)((cee_cfg->oper_prio_tc[i] &
623 I40E_CEE_PGID_PRIO_1_MASK) >>
624 I40E_CEE_PGID_PRIO_1_SHIFT);
625 dcbcfg->etscfg.prioritytable[i*2] = tc;
626 tc = (u8)((cee_cfg->oper_prio_tc[i] &
627 I40E_CEE_PGID_PRIO_0_MASK) >>
628 I40E_CEE_PGID_PRIO_0_SHIFT);
629 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
630 }
631
632 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
633 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
634
635 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
636 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
637 /* Map it to next empty TC */
638 dcbcfg->etscfg.prioritytable[i] =
639 cee_cfg->oper_num_tc - 1;
640 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
641 } else {
642 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
643 }
644 }
645
646 /* CEE PFC data to ETS config */
647 dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
648 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
649
650 status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
651 I40E_AQC_CEE_APP_STATUS_SHIFT;
652 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
653 /* Add APPs if Error is False */
654 if (!err) {
655 /* CEE operating configuration supports FCoE/iSCSI/FIP only */
656 dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
657
658 /* FCoE APP */
659 dcbcfg->app[0].priority =
660 (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
661 I40E_AQC_CEE_APP_FCOE_SHIFT;
662 dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
663 dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
664
665 /* iSCSI APP */
666 dcbcfg->app[1].priority =
667 (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
668 I40E_AQC_CEE_APP_ISCSI_SHIFT;
669 dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
670 dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
671
672 /* FIP APP */
673 dcbcfg->app[2].priority =
674 (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
675 I40E_AQC_CEE_APP_FIP_SHIFT;
676 dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
677 dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
678 }
679}
680
681/**
682 * i40e_cee_to_dcb_config
683 * @cee_cfg: pointer to CEE configuration struct
684 * @dcbcfg: DCB configuration struct
685 *
686 * Convert CEE configuration from firmware to DCB configuration
687 **/
688static void i40e_cee_to_dcb_config(
689 struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
690 struct i40e_dcbx_config *dcbcfg)
691{
692 u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
693 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
694 u8 i, tc, err, sync, oper;
695
696 /* CEE PG data to ETS config */
697 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
698
699 /* Note that the FW creates the oper_prio_tc nibbles reversed
700 * from those in the CEE Priority Group sub-TLV.
701 */
702 for (i = 0; i < 4; i++) {
703 tc = (u8)((cee_cfg->oper_prio_tc[i] &
704 I40E_CEE_PGID_PRIO_0_MASK) >>
705 I40E_CEE_PGID_PRIO_0_SHIFT);
706 dcbcfg->etscfg.prioritytable[i * 2] = tc;
707 tc = (u8)((cee_cfg->oper_prio_tc[i] &
708 I40E_CEE_PGID_PRIO_1_MASK) >>
709 I40E_CEE_PGID_PRIO_1_SHIFT);
710 dcbcfg->etscfg.prioritytable[i * 2 + 1] = tc;
711 }
712
713 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
714 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
715
716 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
717 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
718 /* Map it to next empty TC */
719 dcbcfg->etscfg.prioritytable[i] =
720 cee_cfg->oper_num_tc - 1;
721 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
722 } else {
723 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
724 }
725 }
726
727 /* CEE PFC data to ETS config */
728 dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
729 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
730
731 i = 0;
732 status = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >>
733 I40E_AQC_CEE_FCOE_STATUS_SHIFT;
734 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
735 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
736 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
737 /* Add FCoE APP if Error is False and Oper/Sync is True */
738 if (!err && sync && oper) {
739 /* FCoE APP */
740 dcbcfg->app[i].priority =
741 (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
742 I40E_AQC_CEE_APP_FCOE_SHIFT;
743 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
744 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE;
745 i++;
746 }
747
748 status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >>
749 I40E_AQC_CEE_ISCSI_STATUS_SHIFT;
750 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
751 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
752 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
753 /* Add iSCSI APP if Error is False and Oper/Sync is True */
754 if (!err && sync && oper) {
755 /* iSCSI APP */
756 dcbcfg->app[i].priority =
757 (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
758 I40E_AQC_CEE_APP_ISCSI_SHIFT;
759 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
760 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI;
761 i++;
762 }
763
764 status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >>
765 I40E_AQC_CEE_FIP_STATUS_SHIFT;
766 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
767 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
768 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
769 /* Add FIP APP if Error is False and Oper/Sync is True */
770 if (!err && sync && oper) {
771 /* FIP APP */
772 dcbcfg->app[i].priority =
773 (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
774 I40E_AQC_CEE_APP_FIP_SHIFT;
775 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
776 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP;
777 i++;
778 }
779 dcbcfg->numapps = i;
780}
781
782/**
783 * i40e_get_ieee_dcb_config
784 * @hw: pointer to the hw struct
785 *
786 * Get IEEE mode DCB configuration from the Firmware
787 **/
788static i40e_status i40e_get_ieee_dcb_config(struct i40e_hw *hw)
789{
790 i40e_status ret = 0;
791
792 /* IEEE mode */
793 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
794 /* Get Local DCB Config */
795 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
796 &hw->local_dcbx_config);
797 if (ret)
798 goto out;
799
800 /* Get Remote DCB Config */
801 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
802 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
803 &hw->remote_dcbx_config);
804 /* Don't treat ENOENT as an error for Remote MIBs */
805 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
806 ret = 0;
807
808out:
809 return ret;
810}
811
812/**
813 * i40e_get_dcb_config
814 * @hw: pointer to the hw struct
815 *
816 * Get DCB configuration from the Firmware
817 **/
818i40e_status i40e_get_dcb_config(struct i40e_hw *hw)
819{
820 i40e_status ret = 0;
821 struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
822 struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
823
824 /* If Firmware version < v4.33 on X710/XL710, IEEE only */
825 if ((hw->mac.type == I40E_MAC_XL710) &&
826 (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
827 (hw->aq.fw_maj_ver < 4)))
828 return i40e_get_ieee_dcb_config(hw);
829
830 /* If Firmware version == v4.33 on X710/XL710, use old CEE struct */
831 if ((hw->mac.type == I40E_MAC_XL710) &&
832 ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33))) {
833 ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
834 sizeof(cee_v1_cfg), NULL);
835 if (!ret) {
836 /* CEE mode */
837 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
838 hw->local_dcbx_config.tlv_status =
839 le16_to_cpu(cee_v1_cfg.tlv_status);
840 i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
841 &hw->local_dcbx_config);
842 }
843 } else {
844 ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
845 sizeof(cee_cfg), NULL);
846 if (!ret) {
847 /* CEE mode */
848 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
849 hw->local_dcbx_config.tlv_status =
850 le32_to_cpu(cee_cfg.tlv_status);
851 i40e_cee_to_dcb_config(&cee_cfg,
852 &hw->local_dcbx_config);
853 }
854 }
855
856 /* CEE mode not enabled try querying IEEE data */
857 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
858 return i40e_get_ieee_dcb_config(hw);
859
860 if (ret)
861 goto out;
862
863 /* Get CEE DCB Desired Config */
864 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
865 &hw->desired_dcbx_config);
866 if (ret)
867 goto out;
868
869 /* Get Remote DCB Config */
870 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
871 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
872 &hw->remote_dcbx_config);
873 /* Don't treat ENOENT as an error for Remote MIBs */
874 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
875 ret = 0;
876
877out:
878 return ret;
879}
880
881/**
882 * i40e_init_dcb
883 * @hw: pointer to the hw struct
884 *
885 * Update DCB configuration from the Firmware
886 **/
887i40e_status i40e_init_dcb(struct i40e_hw *hw)
888{
889 i40e_status ret = 0;
890 struct i40e_lldp_variables lldp_cfg;
891 u8 adminstatus = 0;
892
893 if (!hw->func_caps.dcb)
894 return ret;
895
896 /* Read LLDP NVM area */
897 ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
898 if (ret)
899 return ret;
900
901 /* Get the LLDP AdminStatus for the current port */
902 adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
903 adminstatus &= 0xF;
904
905 /* LLDP agent disabled */
906 if (!adminstatus) {
907 hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
908 return ret;
909 }
910
911 /* Get DCBX status */
912 ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
913 if (ret)
914 return ret;
915
916 /* Check the DCBX Status */
917 switch (hw->dcbx_status) {
918 case I40E_DCBX_STATUS_DONE:
919 case I40E_DCBX_STATUS_IN_PROGRESS:
920 /* Get current DCBX configuration */
921 ret = i40e_get_dcb_config(hw);
922 if (ret)
923 return ret;
924 break;
925 case I40E_DCBX_STATUS_DISABLED:
926 return ret;
927 case I40E_DCBX_STATUS_NOT_STARTED:
928 case I40E_DCBX_STATUS_MULTIPLE_PEERS:
929 default:
930 break;
931 }
932
933 /* Configure the LLDP MIB change event */
934 ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
935 if (ret)
936 return ret;
937
938 return ret;
939}
940
941/**
942 * i40e_read_lldp_cfg - read LLDP Configuration data from NVM
943 * @hw: pointer to the HW structure
944 * @lldp_cfg: pointer to hold lldp configuration variables
945 *
946 * Reads the LLDP configuration data from NVM
947 **/
948i40e_status i40e_read_lldp_cfg(struct i40e_hw *hw,
949 struct i40e_lldp_variables *lldp_cfg)
950{
951 i40e_status ret = 0;
952 u32 offset = (2 * I40E_NVM_LLDP_CFG_PTR);
953
954 if (!lldp_cfg)
955 return I40E_ERR_PARAM;
956
957 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
958 if (ret)
959 goto err_lldp_cfg;
960
961 ret = i40e_aq_read_nvm(hw, I40E_SR_EMP_MODULE_PTR, offset,
962 sizeof(struct i40e_lldp_variables),
963 (u8 *)lldp_cfg,
964 true, NULL);
965 i40e_release_nvm(hw);
966
967err_lldp_cfg:
968 return ret;
969}