1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2001-2020 Intel Corporation
3 */
4
5 #include "i40e_adminq.h"
6 #include "i40e_prototype.h"
7 #include "i40e_dcb.h"
8
9 /**
10 * i40e_get_dcbx_status
11 * @hw: pointer to the hw struct
12 * @status: Embedded DCBX Engine Status
13 *
14 * Get the DCBX status from the Firmware
15 **/
i40e_get_dcbx_status(struct i40e_hw * hw,u16 * status)16 enum i40e_status_code i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
17 {
18 u32 reg;
19
20 if (!status)
21 return I40E_ERR_PARAM;
22
23 reg = rd32(hw, I40E_PRTDCB_GENS);
24 *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
25 I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
26
27 return I40E_SUCCESS;
28 }
29
30 /**
31 * i40e_parse_ieee_etscfg_tlv
32 * @tlv: IEEE 802.1Qaz ETS CFG TLV
33 * @dcbcfg: Local store to update ETS CFG data
34 *
35 * Parses IEEE 802.1Qaz ETS CFG TLV
36 **/
i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)37 static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
38 struct i40e_dcbx_config *dcbcfg)
39 {
40 struct i40e_dcb_ets_config *etscfg;
41 u8 *buf = tlv->tlvinfo;
42 u16 offset = 0;
43 u8 priority;
44 int i;
45
46 /* First Octet post subtype
47 * --------------------------
48 * |will-|CBS | Re- | Max |
49 * |ing | |served| TCs |
50 * --------------------------
51 * |1bit | 1bit|3 bits|3bits|
52 */
53 etscfg = &dcbcfg->etscfg;
54 etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
55 I40E_IEEE_ETS_WILLING_SHIFT);
56 etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
57 I40E_IEEE_ETS_CBS_SHIFT);
58 etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
59 I40E_IEEE_ETS_MAXTC_SHIFT);
60
61 /* Move offset to Priority Assignment Table */
62 offset++;
63
64 /* Priority Assignment Table (4 octets)
65 * Octets:| 1 | 2 | 3 | 4 |
66 * -----------------------------------------
67 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
68 * -----------------------------------------
69 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
70 * -----------------------------------------
71 */
72 for (i = 0; i < 4; i++) {
73 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
74 I40E_IEEE_ETS_PRIO_1_SHIFT);
75 etscfg->prioritytable[i * 2] = priority;
76 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
77 I40E_IEEE_ETS_PRIO_0_SHIFT);
78 etscfg->prioritytable[i * 2 + 1] = priority;
79 offset++;
80 }
81
82 /* TC Bandwidth Table (8 octets)
83 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
84 * ---------------------------------
85 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
86 * ---------------------------------
87 */
88 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
89 etscfg->tcbwtable[i] = buf[offset++];
90
91 /* TSA Assignment Table (8 octets)
92 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
93 * ---------------------------------
94 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
95 * ---------------------------------
96 */
97 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
98 etscfg->tsatable[i] = buf[offset++];
99 }
100
101 /**
102 * i40e_parse_ieee_etsrec_tlv
103 * @tlv: IEEE 802.1Qaz ETS REC TLV
104 * @dcbcfg: Local store to update ETS REC data
105 *
106 * Parses IEEE 802.1Qaz ETS REC TLV
107 **/
i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)108 static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
109 struct i40e_dcbx_config *dcbcfg)
110 {
111 u8 *buf = tlv->tlvinfo;
112 u16 offset = 0;
113 u8 priority;
114 int i;
115
116 /* Move offset to priority table */
117 offset++;
118
119 /* Priority Assignment Table (4 octets)
120 * Octets:| 1 | 2 | 3 | 4 |
121 * -----------------------------------------
122 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
123 * -----------------------------------------
124 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
125 * -----------------------------------------
126 */
127 for (i = 0; i < 4; i++) {
128 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
129 I40E_IEEE_ETS_PRIO_1_SHIFT);
130 dcbcfg->etsrec.prioritytable[i*2] = priority;
131 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
132 I40E_IEEE_ETS_PRIO_0_SHIFT);
133 dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
134 offset++;
135 }
136
137 /* TC Bandwidth Table (8 octets)
138 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
139 * ---------------------------------
140 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
141 * ---------------------------------
142 */
143 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
144 dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
145
146 /* TSA Assignment Table (8 octets)
147 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
148 * ---------------------------------
149 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
150 * ---------------------------------
151 */
152 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
153 dcbcfg->etsrec.tsatable[i] = buf[offset++];
154 }
155
156 /**
157 * i40e_parse_ieee_pfccfg_tlv
158 * @tlv: IEEE 802.1Qaz PFC CFG TLV
159 * @dcbcfg: Local store to update PFC CFG data
160 *
161 * Parses IEEE 802.1Qaz PFC CFG TLV
162 **/
i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)163 static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
164 struct i40e_dcbx_config *dcbcfg)
165 {
166 u8 *buf = tlv->tlvinfo;
167
168 /* ----------------------------------------
169 * |will-|MBC | Re- | PFC | PFC Enable |
170 * |ing | |served| cap | |
171 * -----------------------------------------
172 * |1bit | 1bit|2 bits|4bits| 1 octet |
173 */
174 dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
175 I40E_IEEE_PFC_WILLING_SHIFT);
176 dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
177 I40E_IEEE_PFC_MBC_SHIFT);
178 dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
179 I40E_IEEE_PFC_CAP_SHIFT);
180 dcbcfg->pfc.pfcenable = buf[1];
181 }
182
183 /**
184 * i40e_parse_ieee_app_tlv
185 * @tlv: IEEE 802.1Qaz APP TLV
186 * @dcbcfg: Local store to update APP PRIO data
187 *
188 * Parses IEEE 802.1Qaz APP PRIO TLV
189 **/
i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)190 static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
191 struct i40e_dcbx_config *dcbcfg)
192 {
193 u16 typelength;
194 u16 offset = 0;
195 u16 length;
196 int i = 0;
197 u8 *buf;
198
199 typelength = I40E_NTOHS(tlv->typelength);
200 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
201 I40E_LLDP_TLV_LEN_SHIFT);
202 buf = tlv->tlvinfo;
203
204 /* The App priority table starts 5 octets after TLV header */
205 length -= (sizeof(tlv->ouisubtype) + 1);
206
207 /* Move offset to App Priority Table */
208 offset++;
209
210 /* Application Priority Table (3 octets)
211 * Octets:| 1 | 2 | 3 |
212 * -----------------------------------------
213 * |Priority|Rsrvd| Sel | Protocol ID |
214 * -----------------------------------------
215 * Bits:|23 21|20 19|18 16|15 0|
216 * -----------------------------------------
217 */
218 while (offset < length) {
219 dcbcfg->app[i].priority = (u8)((buf[offset] &
220 I40E_IEEE_APP_PRIO_MASK) >>
221 I40E_IEEE_APP_PRIO_SHIFT);
222 dcbcfg->app[i].selector = (u8)((buf[offset] &
223 I40E_IEEE_APP_SEL_MASK) >>
224 I40E_IEEE_APP_SEL_SHIFT);
225 dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
226 buf[offset + 2];
227 /* Move to next app */
228 offset += 3;
229 i++;
230 if (i >= I40E_DCBX_MAX_APPS)
231 break;
232 }
233
234 dcbcfg->numapps = i;
235 }
236
237 /**
238 * i40e_parse_ieee_etsrec_tlv
239 * @tlv: IEEE 802.1Qaz TLV
240 * @dcbcfg: Local store to update ETS REC data
241 *
242 * Get the TLV subtype and send it to parsing function
243 * based on the subtype value
244 **/
i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)245 static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
246 struct i40e_dcbx_config *dcbcfg)
247 {
248 u32 ouisubtype;
249 u8 subtype;
250
251 ouisubtype = I40E_NTOHL(tlv->ouisubtype);
252 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
253 I40E_LLDP_TLV_SUBTYPE_SHIFT);
254 switch (subtype) {
255 case I40E_IEEE_SUBTYPE_ETS_CFG:
256 i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
257 break;
258 case I40E_IEEE_SUBTYPE_ETS_REC:
259 i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
260 break;
261 case I40E_IEEE_SUBTYPE_PFC_CFG:
262 i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
263 break;
264 case I40E_IEEE_SUBTYPE_APP_PRI:
265 i40e_parse_ieee_app_tlv(tlv, dcbcfg);
266 break;
267 default:
268 break;
269 }
270 }
271
272 /**
273 * i40e_parse_cee_pgcfg_tlv
274 * @tlv: CEE DCBX PG CFG TLV
275 * @dcbcfg: Local store to update ETS CFG data
276 *
277 * Parses CEE DCBX PG CFG TLV
278 **/
i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv * tlv,struct i40e_dcbx_config * dcbcfg)279 static void i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv *tlv,
280 struct i40e_dcbx_config *dcbcfg)
281 {
282 struct i40e_dcb_ets_config *etscfg;
283 u8 *buf = tlv->tlvinfo;
284 u16 offset = 0;
285 u8 priority;
286 int i;
287
288 etscfg = &dcbcfg->etscfg;
289
290 if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
291 etscfg->willing = 1;
292
293 etscfg->cbs = 0;
294 /* Priority Group Table (4 octets)
295 * Octets:| 1 | 2 | 3 | 4 |
296 * -----------------------------------------
297 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
298 * -----------------------------------------
299 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
300 * -----------------------------------------
301 */
302 for (i = 0; i < 4; i++) {
303 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_1_MASK) >>
304 I40E_CEE_PGID_PRIO_1_SHIFT);
305 etscfg->prioritytable[i * 2] = priority;
306 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_0_MASK) >>
307 I40E_CEE_PGID_PRIO_0_SHIFT);
308 etscfg->prioritytable[i * 2 + 1] = priority;
309 offset++;
310 }
311
312 /* PG Percentage Table (8 octets)
313 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
314 * ---------------------------------
315 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
316 * ---------------------------------
317 */
318 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
319 etscfg->tcbwtable[i] = buf[offset++];
320
321 /* Number of TCs supported (1 octet) */
322 etscfg->maxtcs = buf[offset];
323 }
324
325 /**
326 * i40e_parse_cee_pfccfg_tlv
327 * @tlv: CEE DCBX PFC CFG TLV
328 * @dcbcfg: Local store to update PFC CFG data
329 *
330 * Parses CEE DCBX PFC CFG TLV
331 **/
i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv * tlv,struct i40e_dcbx_config * dcbcfg)332 static void i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv *tlv,
333 struct i40e_dcbx_config *dcbcfg)
334 {
335 u8 *buf = tlv->tlvinfo;
336
337 if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
338 dcbcfg->pfc.willing = 1;
339
340 /* ------------------------
341 * | PFC Enable | PFC TCs |
342 * ------------------------
343 * | 1 octet | 1 octet |
344 */
345 dcbcfg->pfc.pfcenable = buf[0];
346 dcbcfg->pfc.pfccap = buf[1];
347 }
348
349 /**
350 * i40e_parse_cee_app_tlv
351 * @tlv: CEE DCBX APP TLV
352 * @dcbcfg: Local store to update APP PRIO data
353 *
354 * Parses CEE DCBX APP PRIO TLV
355 **/
i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv * tlv,struct i40e_dcbx_config * dcbcfg)356 static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv,
357 struct i40e_dcbx_config *dcbcfg)
358 {
359 u16 length, typelength, offset = 0;
360 struct i40e_cee_app_prio *app;
361 u8 i;
362
363 typelength = I40E_NTOHS(tlv->hdr.typelen);
364 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
365 I40E_LLDP_TLV_LEN_SHIFT);
366
367 dcbcfg->numapps = length / sizeof(*app);
368 if (!dcbcfg->numapps)
369 return;
370 if (dcbcfg->numapps > I40E_DCBX_MAX_APPS)
371 dcbcfg->numapps = I40E_DCBX_MAX_APPS;
372
373 for (i = 0; i < dcbcfg->numapps; i++) {
374 u8 up, selector;
375
376 app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset);
377 for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) {
378 if (app->prio_map & BIT(up))
379 break;
380 }
381 dcbcfg->app[i].priority = up;
382
383 /* Get Selector from lower 2 bits, and convert to IEEE */
384 selector = (app->upper_oui_sel & I40E_CEE_APP_SELECTOR_MASK);
385 switch (selector) {
386 case I40E_CEE_APP_SEL_ETHTYPE:
387 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
388 break;
389 case I40E_CEE_APP_SEL_TCPIP:
390 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
391 break;
392 default:
393 /* Keep selector as it is for unknown types */
394 dcbcfg->app[i].selector = selector;
395 }
396
397 dcbcfg->app[i].protocolid = I40E_NTOHS(app->protocol);
398 /* Move to next app */
399 offset += sizeof(*app);
400 }
401 }
402
403 /**
404 * i40e_parse_cee_tlv
405 * @tlv: CEE DCBX TLV
406 * @dcbcfg: Local store to update DCBX config data
407 *
408 * Get the TLV subtype and send it to parsing function
409 * based on the subtype value
410 **/
i40e_parse_cee_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)411 static void i40e_parse_cee_tlv(struct i40e_lldp_org_tlv *tlv,
412 struct i40e_dcbx_config *dcbcfg)
413 {
414 u16 len, tlvlen, sublen, typelength;
415 struct i40e_cee_feat_tlv *sub_tlv;
416 u8 subtype, feat_tlv_count = 0;
417 u32 ouisubtype;
418
419 ouisubtype = I40E_NTOHL(tlv->ouisubtype);
420 subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
421 I40E_LLDP_TLV_SUBTYPE_SHIFT);
422 /* Return if not CEE DCBX */
423 if (subtype != I40E_CEE_DCBX_TYPE)
424 return;
425
426 typelength = I40E_NTOHS(tlv->typelength);
427 tlvlen = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
428 I40E_LLDP_TLV_LEN_SHIFT);
429 len = sizeof(tlv->typelength) + sizeof(ouisubtype) +
430 sizeof(struct i40e_cee_ctrl_tlv);
431 /* Return if no CEE DCBX Feature TLVs */
432 if (tlvlen <= len)
433 return;
434
435 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)tlv + len);
436 while (feat_tlv_count < I40E_CEE_MAX_FEAT_TYPE) {
437 typelength = I40E_NTOHS(sub_tlv->hdr.typelen);
438 sublen = (u16)((typelength &
439 I40E_LLDP_TLV_LEN_MASK) >>
440 I40E_LLDP_TLV_LEN_SHIFT);
441 subtype = (u8)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
442 I40E_LLDP_TLV_TYPE_SHIFT);
443 switch (subtype) {
444 case I40E_CEE_SUBTYPE_PG_CFG:
445 i40e_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
446 break;
447 case I40E_CEE_SUBTYPE_PFC_CFG:
448 i40e_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
449 break;
450 case I40E_CEE_SUBTYPE_APP_PRI:
451 i40e_parse_cee_app_tlv(sub_tlv, dcbcfg);
452 break;
453 default:
454 return; /* Invalid Sub-type return */
455 }
456 feat_tlv_count++;
457 /* Move to next sub TLV */
458 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)sub_tlv +
459 sizeof(sub_tlv->hdr.typelen) +
460 sublen);
461 }
462 }
463
464 /**
465 * i40e_parse_org_tlv
466 * @tlv: Organization specific TLV
467 * @dcbcfg: Local store to update ETS REC data
468 *
469 * Currently only IEEE 802.1Qaz TLV is supported, all others
470 * will be returned
471 **/
i40e_parse_org_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)472 static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
473 struct i40e_dcbx_config *dcbcfg)
474 {
475 u32 ouisubtype;
476 u32 oui;
477
478 ouisubtype = I40E_NTOHL(tlv->ouisubtype);
479 oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
480 I40E_LLDP_TLV_OUI_SHIFT);
481 switch (oui) {
482 case I40E_IEEE_8021QAZ_OUI:
483 i40e_parse_ieee_tlv(tlv, dcbcfg);
484 break;
485 case I40E_CEE_DCBX_OUI:
486 i40e_parse_cee_tlv(tlv, dcbcfg);
487 break;
488 default:
489 break;
490 }
491 }
492
493 /**
494 * i40e_lldp_to_dcb_config
495 * @lldpmib: LLDPDU to be parsed
496 * @dcbcfg: store for LLDPDU data
497 *
498 * Parse DCB configuration from the LLDPDU
499 **/
i40e_lldp_to_dcb_config(u8 * lldpmib,struct i40e_dcbx_config * dcbcfg)500 enum i40e_status_code i40e_lldp_to_dcb_config(u8 *lldpmib,
501 struct i40e_dcbx_config *dcbcfg)
502 {
503 enum i40e_status_code ret = I40E_SUCCESS;
504 struct i40e_lldp_org_tlv *tlv;
505 u16 type;
506 u16 length;
507 u16 typelength;
508 u16 offset = 0;
509
510 if (!lldpmib || !dcbcfg)
511 return I40E_ERR_PARAM;
512
513 /* set to the start of LLDPDU */
514 lldpmib += I40E_LLDP_MIB_HLEN;
515 tlv = (struct i40e_lldp_org_tlv *)lldpmib;
516 while (1) {
517 typelength = I40E_NTOHS(tlv->typelength);
518 type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
519 I40E_LLDP_TLV_TYPE_SHIFT);
520 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
521 I40E_LLDP_TLV_LEN_SHIFT);
522 offset += sizeof(typelength) + length;
523
524 /* END TLV or beyond LLDPDU size */
525 if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
526 break;
527
528 switch (type) {
529 case I40E_TLV_TYPE_ORG:
530 i40e_parse_org_tlv(tlv, dcbcfg);
531 break;
532 default:
533 break;
534 }
535
536 /* Move to next TLV */
537 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
538 sizeof(tlv->typelength) +
539 length);
540 }
541
542 return ret;
543 }
544
545 /**
546 * i40e_aq_get_dcb_config
547 * @hw: pointer to the hw struct
548 * @mib_type: mib type for the query
549 * @bridgetype: bridge type for the query (remote)
550 * @dcbcfg: store for LLDPDU data
551 *
552 * Query DCB configuration from the Firmware
553 **/
i40e_aq_get_dcb_config(struct i40e_hw * hw,u8 mib_type,u8 bridgetype,struct i40e_dcbx_config * dcbcfg)554 enum i40e_status_code i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
555 u8 bridgetype,
556 struct i40e_dcbx_config *dcbcfg)
557 {
558 enum i40e_status_code ret = I40E_SUCCESS;
559 struct i40e_virt_mem mem;
560 u8 *lldpmib;
561
562 /* Allocate the LLDPDU */
563 ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
564 if (ret)
565 return ret;
566
567 lldpmib = (u8 *)mem.va;
568 ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
569 (void *)lldpmib, I40E_LLDPDU_SIZE,
570 NULL, NULL, NULL);
571 if (ret)
572 goto free_mem;
573
574 /* Parse LLDP MIB to get dcb configuration */
575 ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
576
577 free_mem:
578 i40e_free_virt_mem(hw, &mem);
579 return ret;
580 }
581
582 /**
583 * i40e_cee_to_dcb_v1_config
584 * @cee_cfg: pointer to CEE v1 response configuration struct
585 * @dcbcfg: DCB configuration struct
586 *
587 * Convert CEE v1 configuration from firmware to DCB configuration
588 **/
i40e_cee_to_dcb_v1_config(struct i40e_aqc_get_cee_dcb_cfg_v1_resp * cee_cfg,struct i40e_dcbx_config * dcbcfg)589 static void i40e_cee_to_dcb_v1_config(
590 struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
591 struct i40e_dcbx_config *dcbcfg)
592 {
593 u16 status, tlv_status = LE16_TO_CPU(cee_cfg->tlv_status);
594 u16 app_prio = LE16_TO_CPU(cee_cfg->oper_app_prio);
595 u8 i, tc, err;
596
597 /* CEE PG data to ETS config */
598 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
599
600 /* Note that the FW creates the oper_prio_tc nibbles reversed
601 * from those in the CEE Priority Group sub-TLV.
602 */
603 for (i = 0; i < 4; i++) {
604 tc = (u8)((cee_cfg->oper_prio_tc[i] &
605 I40E_CEE_PGID_PRIO_0_MASK) >>
606 I40E_CEE_PGID_PRIO_0_SHIFT);
607 dcbcfg->etscfg.prioritytable[i*2] = tc;
608 tc = (u8)((cee_cfg->oper_prio_tc[i] &
609 I40E_CEE_PGID_PRIO_1_MASK) >>
610 I40E_CEE_PGID_PRIO_1_SHIFT);
611 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
612 }
613
614 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
615 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
616
617 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
618 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
619 /* Map it to next empty TC */
620 dcbcfg->etscfg.prioritytable[i] =
621 cee_cfg->oper_num_tc - 1;
622 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
623 } else {
624 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
625 }
626 }
627
628 /* CEE PFC data to ETS config */
629 dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
630 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
631
632 status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
633 I40E_AQC_CEE_APP_STATUS_SHIFT;
634 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
635 /* Add APPs if Error is False */
636 if (!err) {
637 /* CEE operating configuration supports FCoE/iSCSI/FIP only */
638 dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
639
640 /* FCoE APP */
641 dcbcfg->app[0].priority =
642 (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
643 I40E_AQC_CEE_APP_FCOE_SHIFT;
644 dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
645 dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
646
647 /* iSCSI APP */
648 dcbcfg->app[1].priority =
649 (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
650 I40E_AQC_CEE_APP_ISCSI_SHIFT;
651 dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
652 dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
653
654 /* FIP APP */
655 dcbcfg->app[2].priority =
656 (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
657 I40E_AQC_CEE_APP_FIP_SHIFT;
658 dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
659 dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
660 }
661 }
662
663 /**
664 * i40e_cee_to_dcb_config
665 * @cee_cfg: pointer to CEE configuration struct
666 * @dcbcfg: DCB configuration struct
667 *
668 * Convert CEE configuration from firmware to DCB configuration
669 **/
i40e_cee_to_dcb_config(struct i40e_aqc_get_cee_dcb_cfg_resp * cee_cfg,struct i40e_dcbx_config * dcbcfg)670 static void i40e_cee_to_dcb_config(
671 struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
672 struct i40e_dcbx_config *dcbcfg)
673 {
674 u32 status, tlv_status = LE32_TO_CPU(cee_cfg->tlv_status);
675 u16 app_prio = LE16_TO_CPU(cee_cfg->oper_app_prio);
676 u8 i, tc, err, sync, oper;
677
678 /* CEE PG data to ETS config */
679 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
680
681 /* Note that the FW creates the oper_prio_tc nibbles reversed
682 * from those in the CEE Priority Group sub-TLV.
683 */
684 for (i = 0; i < 4; i++) {
685 tc = (u8)((cee_cfg->oper_prio_tc[i] &
686 I40E_CEE_PGID_PRIO_0_MASK) >>
687 I40E_CEE_PGID_PRIO_0_SHIFT);
688 dcbcfg->etscfg.prioritytable[i*2] = tc;
689 tc = (u8)((cee_cfg->oper_prio_tc[i] &
690 I40E_CEE_PGID_PRIO_1_MASK) >>
691 I40E_CEE_PGID_PRIO_1_SHIFT);
692 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
693 }
694
695 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
696 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
697
698 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
699 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
700 /* Map it to next empty TC */
701 dcbcfg->etscfg.prioritytable[i] =
702 cee_cfg->oper_num_tc - 1;
703 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
704 } else {
705 dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
706 }
707 }
708
709 /* CEE PFC data to ETS config */
710 dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
711 dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
712
713 i = 0;
714 status = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >>
715 I40E_AQC_CEE_FCOE_STATUS_SHIFT;
716 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
717 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
718 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
719 /* Add FCoE APP if Error is False and Oper/Sync is True */
720 if (!err && sync && oper) {
721 /* FCoE APP */
722 dcbcfg->app[i].priority =
723 (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
724 I40E_AQC_CEE_APP_FCOE_SHIFT;
725 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
726 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE;
727 i++;
728 }
729
730 status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >>
731 I40E_AQC_CEE_ISCSI_STATUS_SHIFT;
732 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
733 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
734 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
735 /* Add iSCSI APP if Error is False and Oper/Sync is True */
736 if (!err && sync && oper) {
737 /* iSCSI APP */
738 dcbcfg->app[i].priority =
739 (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
740 I40E_AQC_CEE_APP_ISCSI_SHIFT;
741 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
742 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI;
743 i++;
744 }
745
746 status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >>
747 I40E_AQC_CEE_FIP_STATUS_SHIFT;
748 err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
749 sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
750 oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
751 /* Add FIP APP if Error is False and Oper/Sync is True */
752 if (!err && sync && oper) {
753 /* FIP APP */
754 dcbcfg->app[i].priority =
755 (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
756 I40E_AQC_CEE_APP_FIP_SHIFT;
757 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
758 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP;
759 i++;
760 }
761 dcbcfg->numapps = i;
762 }
763
764 /**
765 * i40e_get_ieee_dcb_config
766 * @hw: pointer to the hw struct
767 *
768 * Get IEEE mode DCB configuration from the Firmware
769 **/
i40e_get_ieee_dcb_config(struct i40e_hw * hw)770 STATIC enum i40e_status_code i40e_get_ieee_dcb_config(struct i40e_hw *hw)
771 {
772 enum i40e_status_code ret = I40E_SUCCESS;
773
774 /* IEEE mode */
775 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
776 /* Get Local DCB Config */
777 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
778 &hw->local_dcbx_config);
779 if (ret)
780 goto out;
781
782 /* Get Remote DCB Config */
783 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
784 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
785 &hw->remote_dcbx_config);
786 /* Don't treat ENOENT as an error for Remote MIBs */
787 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
788 ret = I40E_SUCCESS;
789
790 out:
791 return ret;
792 }
793
794 /**
795 * i40e_get_dcb_config
796 * @hw: pointer to the hw struct
797 *
798 * Get DCB configuration from the Firmware
799 **/
i40e_get_dcb_config(struct i40e_hw * hw)800 enum i40e_status_code i40e_get_dcb_config(struct i40e_hw *hw)
801 {
802 enum i40e_status_code ret = I40E_SUCCESS;
803 struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
804 struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
805
806 /* If Firmware version < v4.33 on X710/XL710, IEEE only */
807 if ((hw->mac.type == I40E_MAC_XL710) &&
808 (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
809 (hw->aq.fw_maj_ver < 4)))
810 return i40e_get_ieee_dcb_config(hw);
811
812 /* If Firmware version == v4.33 on X710/XL710, use old CEE struct */
813 if ((hw->mac.type == I40E_MAC_XL710) &&
814 ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33))) {
815 ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
816 sizeof(cee_v1_cfg), NULL);
817 if (ret == I40E_SUCCESS) {
818 /* CEE mode */
819 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
820 hw->local_dcbx_config.tlv_status =
821 LE16_TO_CPU(cee_v1_cfg.tlv_status);
822 i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
823 &hw->local_dcbx_config);
824 }
825 } else {
826 ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
827 sizeof(cee_cfg), NULL);
828 if (ret == I40E_SUCCESS) {
829 /* CEE mode */
830 hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
831 hw->local_dcbx_config.tlv_status =
832 LE32_TO_CPU(cee_cfg.tlv_status);
833 i40e_cee_to_dcb_config(&cee_cfg,
834 &hw->local_dcbx_config);
835 }
836 }
837
838 /* CEE mode not enabled try querying IEEE data */
839 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
840 return i40e_get_ieee_dcb_config(hw);
841
842 if (ret != I40E_SUCCESS)
843 goto out;
844
845 /* Get CEE DCB Desired Config */
846 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
847 &hw->desired_dcbx_config);
848 if (ret)
849 goto out;
850
851 /* Get Remote DCB Config */
852 ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
853 I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
854 &hw->remote_dcbx_config);
855 /* Don't treat ENOENT as an error for Remote MIBs */
856 if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
857 ret = I40E_SUCCESS;
858
859 out:
860 return ret;
861 }
862
863 /**
864 * i40e_init_dcb
865 * @hw: pointer to the hw struct
866 * @enable_mib_change: enable mib change event
867 *
868 * Update DCB configuration from the Firmware
869 **/
i40e_init_dcb(struct i40e_hw * hw,bool enable_mib_change)870 enum i40e_status_code i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change)
871 {
872 enum i40e_status_code ret = I40E_SUCCESS;
873 struct i40e_lldp_variables lldp_cfg;
874 u8 adminstatus = 0;
875
876 if (!hw->func_caps.dcb)
877 return I40E_NOT_SUPPORTED;
878
879 /* Read LLDP NVM area */
880 if (hw->flags & I40E_HW_FLAG_FW_LLDP_PERSISTENT) {
881 u8 offset = 0;
882
883 if (hw->mac.type == I40E_MAC_XL710)
884 offset = I40E_LLDP_CURRENT_STATUS_XL710_OFFSET;
885 else if (hw->mac.type == I40E_MAC_X722)
886 offset = I40E_LLDP_CURRENT_STATUS_X722_OFFSET;
887 else
888 return I40E_NOT_SUPPORTED;
889
890 ret = i40e_read_nvm_module_data(hw,
891 I40E_SR_EMP_SR_SETTINGS_PTR,
892 offset,
893 I40E_LLDP_CURRENT_STATUS_OFFSET,
894 I40E_LLDP_CURRENT_STATUS_SIZE,
895 &lldp_cfg.adminstatus);
896 } else {
897 ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
898 }
899 if (ret)
900 return I40E_ERR_NOT_READY;
901
902 /* Get the LLDP AdminStatus for the current port */
903 adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
904 adminstatus &= 0xF;
905
906 /* LLDP agent disabled */
907 if (!adminstatus) {
908 hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
909 return I40E_ERR_NOT_READY;
910 }
911
912 /* Get DCBX status */
913 ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
914 if (ret)
915 return ret;
916
917 /* Check the DCBX Status */
918 if (hw->dcbx_status == I40E_DCBX_STATUS_DONE ||
919 hw->dcbx_status == I40E_DCBX_STATUS_IN_PROGRESS) {
920 /* Get current DCBX configuration */
921 ret = i40e_get_dcb_config(hw);
922 if (ret)
923 return ret;
924 } else if (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED) {
925 return I40E_ERR_NOT_READY;
926 }
927
928 /* Configure the LLDP MIB change event */
929 if (enable_mib_change)
930 ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
931
932 return ret;
933 }
934
935 /**
936 * i40e_get_fw_lldp_status
937 * @hw: pointer to the hw struct
938 * @lldp_status: pointer to the status enum
939 *
940 * Get status of FW Link Layer Discovery Protocol (LLDP) Agent.
941 * Status of agent is reported via @lldp_status parameter.
942 **/
943 enum i40e_status_code
i40e_get_fw_lldp_status(struct i40e_hw * hw,enum i40e_get_fw_lldp_status_resp * lldp_status)944 i40e_get_fw_lldp_status(struct i40e_hw *hw,
945 enum i40e_get_fw_lldp_status_resp *lldp_status)
946 {
947 enum i40e_status_code ret;
948 struct i40e_virt_mem mem;
949 u8 *lldpmib;
950
951 if (!lldp_status)
952 return I40E_ERR_PARAM;
953
954 /* Allocate buffer for the LLDPDU */
955 ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
956 if (ret)
957 return ret;
958
959 lldpmib = (u8 *)mem.va;
960 ret = i40e_aq_get_lldp_mib(hw, 0, 0, (void *)lldpmib,
961 I40E_LLDPDU_SIZE, NULL, NULL, NULL);
962
963 if (ret == I40E_SUCCESS) {
964 *lldp_status = I40E_GET_FW_LLDP_STATUS_ENABLED;
965 } else if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT) {
966 /* MIB is not available yet but the agent is running */
967 *lldp_status = I40E_GET_FW_LLDP_STATUS_ENABLED;
968 ret = I40E_SUCCESS;
969 } else if (hw->aq.asq_last_status == I40E_AQ_RC_EPERM) {
970 *lldp_status = I40E_GET_FW_LLDP_STATUS_DISABLED;
971 ret = I40E_SUCCESS;
972 }
973
974 i40e_free_virt_mem(hw, &mem);
975 return ret;
976 }
977
978 /**
979 * i40e_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
980 * @tlv: Fill the ETS config data in IEEE format
981 * @dcbcfg: Local store which holds the DCB Config
982 *
983 * Prepare IEEE 802.1Qaz ETS CFG TLV
984 **/
i40e_add_ieee_ets_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)985 static void i40e_add_ieee_ets_tlv(struct i40e_lldp_org_tlv *tlv,
986 struct i40e_dcbx_config *dcbcfg)
987 {
988 u8 priority0, priority1, maxtcwilling = 0;
989 struct i40e_dcb_ets_config *etscfg;
990 u16 offset = 0, typelength, i;
991 u8 *buf = tlv->tlvinfo;
992 u32 ouisubtype;
993
994 typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
995 I40E_IEEE_ETS_TLV_LENGTH);
996 tlv->typelength = I40E_HTONS(typelength);
997
998 ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
999 I40E_IEEE_SUBTYPE_ETS_CFG);
1000 tlv->ouisubtype = I40E_HTONL(ouisubtype);
1001
1002 /* First Octet post subtype
1003 * --------------------------
1004 * |will-|CBS | Re- | Max |
1005 * |ing | |served| TCs |
1006 * --------------------------
1007 * |1bit | 1bit|3 bits|3bits|
1008 */
1009 etscfg = &dcbcfg->etscfg;
1010 if (etscfg->willing)
1011 maxtcwilling = BIT(I40E_IEEE_ETS_WILLING_SHIFT);
1012 maxtcwilling |= etscfg->maxtcs & I40E_IEEE_ETS_MAXTC_MASK;
1013 buf[offset] = maxtcwilling;
1014
1015 /* Move offset to Priority Assignment Table */
1016 offset++;
1017
1018 /* Priority Assignment Table (4 octets)
1019 * Octets:| 1 | 2 | 3 | 4 |
1020 * -----------------------------------------
1021 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1022 * -----------------------------------------
1023 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
1024 * -----------------------------------------
1025 */
1026 for (i = 0; i < 4; i++) {
1027 priority0 = etscfg->prioritytable[i * 2] & 0xF;
1028 priority1 = etscfg->prioritytable[i * 2 + 1] & 0xF;
1029 buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
1030 priority1;
1031 offset++;
1032 }
1033
1034 /* TC Bandwidth Table (8 octets)
1035 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1036 * ---------------------------------
1037 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1038 * ---------------------------------
1039 */
1040 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
1041 buf[offset++] = etscfg->tcbwtable[i];
1042
1043 /* TSA Assignment Table (8 octets)
1044 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1045 * ---------------------------------
1046 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1047 * ---------------------------------
1048 */
1049 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
1050 buf[offset++] = etscfg->tsatable[i];
1051 }
1052
1053 /**
1054 * i40e_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1055 * @tlv: Fill ETS Recommended TLV in IEEE format
1056 * @dcbcfg: Local store which holds the DCB Config
1057 *
1058 * Prepare IEEE 802.1Qaz ETS REC TLV
1059 **/
i40e_add_ieee_etsrec_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)1060 static void i40e_add_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
1061 struct i40e_dcbx_config *dcbcfg)
1062 {
1063 struct i40e_dcb_ets_config *etsrec;
1064 u16 offset = 0, typelength, i;
1065 u8 priority0, priority1;
1066 u8 *buf = tlv->tlvinfo;
1067 u32 ouisubtype;
1068
1069 typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
1070 I40E_IEEE_ETS_TLV_LENGTH);
1071 tlv->typelength = I40E_HTONS(typelength);
1072
1073 ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
1074 I40E_IEEE_SUBTYPE_ETS_REC);
1075 tlv->ouisubtype = I40E_HTONL(ouisubtype);
1076
1077 etsrec = &dcbcfg->etsrec;
1078 /* First Octet is reserved */
1079 /* Move offset to Priority Assignment Table */
1080 offset++;
1081
1082 /* Priority Assignment Table (4 octets)
1083 * Octets:| 1 | 2 | 3 | 4 |
1084 * -----------------------------------------
1085 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1086 * -----------------------------------------
1087 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
1088 * -----------------------------------------
1089 */
1090 for (i = 0; i < 4; i++) {
1091 priority0 = etsrec->prioritytable[i * 2] & 0xF;
1092 priority1 = etsrec->prioritytable[i * 2 + 1] & 0xF;
1093 buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
1094 priority1;
1095 offset++;
1096 }
1097
1098 /* TC Bandwidth Table (8 octets)
1099 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1100 * ---------------------------------
1101 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1102 * ---------------------------------
1103 */
1104 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
1105 buf[offset++] = etsrec->tcbwtable[i];
1106
1107 /* TSA Assignment Table (8 octets)
1108 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1109 * ---------------------------------
1110 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1111 * ---------------------------------
1112 */
1113 for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
1114 buf[offset++] = etsrec->tsatable[i];
1115 }
1116
1117 /**
1118 * i40e_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1119 * @tlv: Fill PFC TLV in IEEE format
1120 * @dcbcfg: Local store to get PFC CFG data
1121 *
1122 * Prepare IEEE 802.1Qaz PFC CFG TLV
1123 **/
i40e_add_ieee_pfc_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)1124 static void i40e_add_ieee_pfc_tlv(struct i40e_lldp_org_tlv *tlv,
1125 struct i40e_dcbx_config *dcbcfg)
1126 {
1127 u8 *buf = tlv->tlvinfo;
1128 u32 ouisubtype;
1129 u16 typelength;
1130
1131 typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
1132 I40E_IEEE_PFC_TLV_LENGTH);
1133 tlv->typelength = I40E_HTONS(typelength);
1134
1135 ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
1136 I40E_IEEE_SUBTYPE_PFC_CFG);
1137 tlv->ouisubtype = I40E_HTONL(ouisubtype);
1138
1139 /* ----------------------------------------
1140 * |will-|MBC | Re- | PFC | PFC Enable |
1141 * |ing | |served| cap | |
1142 * -----------------------------------------
1143 * |1bit | 1bit|2 bits|4bits| 1 octet |
1144 */
1145 if (dcbcfg->pfc.willing)
1146 buf[0] = BIT(I40E_IEEE_PFC_WILLING_SHIFT);
1147
1148 if (dcbcfg->pfc.mbc)
1149 buf[0] |= BIT(I40E_IEEE_PFC_MBC_SHIFT);
1150
1151 buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1152 buf[1] = dcbcfg->pfc.pfcenable;
1153 }
1154
1155 /**
1156 * i40e_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
1157 * @tlv: Fill APP TLV in IEEE format
1158 * @dcbcfg: Local store to get APP CFG data
1159 *
1160 * Prepare IEEE 802.1Qaz APP CFG TLV
1161 **/
i40e_add_ieee_app_pri_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg)1162 static void i40e_add_ieee_app_pri_tlv(struct i40e_lldp_org_tlv *tlv,
1163 struct i40e_dcbx_config *dcbcfg)
1164 {
1165 u16 typelength, length, offset = 0;
1166 u8 priority, selector, i = 0;
1167 u8 *buf = tlv->tlvinfo;
1168 u32 ouisubtype;
1169
1170 /* No APP TLVs then just return */
1171 if (dcbcfg->numapps == 0)
1172 return;
1173 ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
1174 I40E_IEEE_SUBTYPE_APP_PRI);
1175 tlv->ouisubtype = I40E_HTONL(ouisubtype);
1176
1177 /* Move offset to App Priority Table */
1178 offset++;
1179 /* Application Priority Table (3 octets)
1180 * Octets:| 1 | 2 | 3 |
1181 * -----------------------------------------
1182 * |Priority|Rsrvd| Sel | Protocol ID |
1183 * -----------------------------------------
1184 * Bits:|23 21|20 19|18 16|15 0|
1185 * -----------------------------------------
1186 */
1187 while (i < dcbcfg->numapps) {
1188 priority = dcbcfg->app[i].priority & 0x7;
1189 selector = dcbcfg->app[i].selector & 0x7;
1190 buf[offset] = (priority << I40E_IEEE_APP_PRIO_SHIFT) | selector;
1191 buf[offset + 1] = (dcbcfg->app[i].protocolid >> 0x8) & 0xFF;
1192 buf[offset + 2] = dcbcfg->app[i].protocolid & 0xFF;
1193 /* Move to next app */
1194 offset += 3;
1195 i++;
1196 if (i >= I40E_DCBX_MAX_APPS)
1197 break;
1198 }
1199 /* length includes size of ouisubtype + 1 reserved + 3*numapps */
1200 length = sizeof(tlv->ouisubtype) + 1 + (i*3);
1201 typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
1202 (length & 0x1FF));
1203 tlv->typelength = I40E_HTONS(typelength);
1204 }
1205
1206 /**
1207 * i40e_add_dcb_tlv - Add all IEEE TLVs
1208 * @tlv: pointer to org tlv
1209 *
1210 * add tlv information
1211 **/
i40e_add_dcb_tlv(struct i40e_lldp_org_tlv * tlv,struct i40e_dcbx_config * dcbcfg,u16 tlvid)1212 static void i40e_add_dcb_tlv(struct i40e_lldp_org_tlv *tlv,
1213 struct i40e_dcbx_config *dcbcfg,
1214 u16 tlvid)
1215 {
1216 switch (tlvid) {
1217 case I40E_IEEE_TLV_ID_ETS_CFG:
1218 i40e_add_ieee_ets_tlv(tlv, dcbcfg);
1219 break;
1220 case I40E_IEEE_TLV_ID_ETS_REC:
1221 i40e_add_ieee_etsrec_tlv(tlv, dcbcfg);
1222 break;
1223 case I40E_IEEE_TLV_ID_PFC_CFG:
1224 i40e_add_ieee_pfc_tlv(tlv, dcbcfg);
1225 break;
1226 case I40E_IEEE_TLV_ID_APP_PRI:
1227 i40e_add_ieee_app_pri_tlv(tlv, dcbcfg);
1228 break;
1229 default:
1230 break;
1231 }
1232 }
1233
1234 /**
1235 * i40e_set_dcb_config - Set the local LLDP MIB to FW
1236 * @hw: pointer to the hw struct
1237 *
1238 * Set DCB configuration to the Firmware
1239 **/
i40e_set_dcb_config(struct i40e_hw * hw)1240 enum i40e_status_code i40e_set_dcb_config(struct i40e_hw *hw)
1241 {
1242 enum i40e_status_code ret = I40E_SUCCESS;
1243 struct i40e_dcbx_config *dcbcfg;
1244 struct i40e_virt_mem mem;
1245 u8 mib_type, *lldpmib;
1246 u16 miblen;
1247
1248 /* update the hw local config */
1249 dcbcfg = &hw->local_dcbx_config;
1250 /* Allocate the LLDPDU */
1251 ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
1252 if (ret)
1253 return ret;
1254
1255 mib_type = SET_LOCAL_MIB_AC_TYPE_LOCAL_MIB;
1256 if (dcbcfg->app_mode == I40E_DCBX_APPS_NON_WILLING) {
1257 mib_type |= SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS <<
1258 SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS_SHIFT;
1259 }
1260 lldpmib = (u8 *)mem.va;
1261 ret = i40e_dcb_config_to_lldp(lldpmib, &miblen, dcbcfg);
1262 ret = i40e_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen, NULL);
1263
1264 i40e_free_virt_mem(hw, &mem);
1265 return ret;
1266 }
1267
1268 /**
1269 * i40e_dcb_config_to_lldp - Convert Dcbconfig to MIB format
1270 * @lldpmib: pointer to mib to be output
1271 * @miblen: pointer to u16 for length of lldpmib
1272 * @dcbcfg: store for LLDPDU data
1273 *
1274 * send DCB configuration to FW
1275 **/
i40e_dcb_config_to_lldp(u8 * lldpmib,u16 * miblen,struct i40e_dcbx_config * dcbcfg)1276 enum i40e_status_code i40e_dcb_config_to_lldp(u8 *lldpmib, u16 *miblen,
1277 struct i40e_dcbx_config *dcbcfg)
1278 {
1279 u16 length, offset = 0, tlvid = I40E_TLV_ID_START;
1280 enum i40e_status_code ret = I40E_SUCCESS;
1281 struct i40e_lldp_org_tlv *tlv;
1282 u16 typelength;
1283
1284 tlv = (struct i40e_lldp_org_tlv *)lldpmib;
1285 while (1) {
1286 i40e_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1287 typelength = I40E_NTOHS(tlv->typelength);
1288 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
1289 I40E_LLDP_TLV_LEN_SHIFT);
1290 if (length)
1291 offset += length + 2;
1292 /* END TLV or beyond LLDPDU size */
1293 if ((tlvid >= I40E_TLV_ID_END_OF_LLDPPDU) ||
1294 (offset > I40E_LLDPDU_SIZE))
1295 break;
1296 /* Move to next TLV */
1297 if (length)
1298 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
1299 sizeof(tlv->typelength) + length);
1300 }
1301 *miblen = offset;
1302 return ret;
1303 }
1304
1305
1306 /**
1307 * _i40e_read_lldp_cfg - generic read of LLDP Configuration data from NVM
1308 * @hw: pointer to the HW structure
1309 * @lldp_cfg: pointer to hold lldp configuration variables
1310 * @module: address of the module pointer
1311 * @word_offset: offset of LLDP configuration
1312 *
1313 * Reads the LLDP configuration data from NVM using passed addresses
1314 **/
_i40e_read_lldp_cfg(struct i40e_hw * hw,struct i40e_lldp_variables * lldp_cfg,u8 module,u32 word_offset)1315 static enum i40e_status_code _i40e_read_lldp_cfg(struct i40e_hw *hw,
1316 struct i40e_lldp_variables *lldp_cfg,
1317 u8 module, u32 word_offset)
1318 {
1319 u32 address, offset = (2 * word_offset);
1320 enum i40e_status_code ret;
1321 __le16 raw_mem;
1322 u16 mem;
1323
1324 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1325 if (ret != I40E_SUCCESS)
1326 return ret;
1327
1328 ret = i40e_aq_read_nvm(hw, 0x0, module * 2, sizeof(raw_mem), &raw_mem,
1329 true, NULL);
1330 i40e_release_nvm(hw);
1331 if (ret != I40E_SUCCESS)
1332 return ret;
1333
1334 mem = LE16_TO_CPU(raw_mem);
1335 /* Check if this pointer needs to be read in word size or 4K sector
1336 * units.
1337 */
1338 if (mem & I40E_PTR_TYPE)
1339 address = (0x7FFF & mem) * 4096;
1340 else
1341 address = (0x7FFF & mem) * 2;
1342
1343 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1344 if (ret != I40E_SUCCESS)
1345 goto err_lldp_cfg;
1346
1347 ret = i40e_aq_read_nvm(hw, module, offset, sizeof(raw_mem), &raw_mem,
1348 true, NULL);
1349 i40e_release_nvm(hw);
1350 if (ret != I40E_SUCCESS)
1351 return ret;
1352
1353 mem = LE16_TO_CPU(raw_mem);
1354 offset = mem + word_offset;
1355 offset *= 2;
1356
1357 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1358 if (ret != I40E_SUCCESS)
1359 goto err_lldp_cfg;
1360
1361 ret = i40e_aq_read_nvm(hw, 0, address + offset,
1362 sizeof(struct i40e_lldp_variables), lldp_cfg,
1363 true, NULL);
1364 i40e_release_nvm(hw);
1365
1366 err_lldp_cfg:
1367 return ret;
1368 }
1369
1370 /**
1371 * i40e_read_lldp_cfg - read LLDP Configuration data from NVM
1372 * @hw: pointer to the HW structure
1373 * @lldp_cfg: pointer to hold lldp configuration variables
1374 *
1375 * Reads the LLDP configuration data from NVM
1376 **/
i40e_read_lldp_cfg(struct i40e_hw * hw,struct i40e_lldp_variables * lldp_cfg)1377 enum i40e_status_code i40e_read_lldp_cfg(struct i40e_hw *hw,
1378 struct i40e_lldp_variables *lldp_cfg)
1379 {
1380 enum i40e_status_code ret = I40E_SUCCESS;
1381 u32 mem;
1382
1383 if (!lldp_cfg)
1384 return I40E_ERR_PARAM;
1385
1386 ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1387 if (ret != I40E_SUCCESS)
1388 return ret;
1389
1390 ret = i40e_aq_read_nvm(hw, I40E_SR_NVM_CONTROL_WORD, 0, sizeof(mem),
1391 &mem, true, NULL);
1392 i40e_release_nvm(hw);
1393 if (ret != I40E_SUCCESS)
1394 return ret;
1395
1396 /* Read a bit that holds information whether we are running flat or
1397 * structured NVM image. Flat image has LLDP configuration in shadow
1398 * ram, so there is a need to pass different addresses for both cases.
1399 */
1400 if (mem & I40E_SR_NVM_MAP_STRUCTURE_TYPE) {
1401 /* Flat NVM case */
1402 ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_SR_EMP_MODULE_PTR,
1403 I40E_SR_LLDP_CFG_PTR);
1404 } else {
1405 /* Good old structured NVM image */
1406 ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_EMP_MODULE_PTR,
1407 I40E_NVM_LLDP_CFG_PTR);
1408 }
1409
1410 return ret;
1411 }
1412