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WIP FPC-III support
[linux/fpc-iii.git] / drivers / net / ethernet / intel / ice / ice_dcb.c
blob2a3147ee0bbb1e0b35c2523ea6023e4f0c905868
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2019, Intel Corporation. */
3
4 #include "ice_common.h"
5 #include "ice_sched.h"
6 #include "ice_dcb.h"
7
8 /**
9 * ice_aq_get_lldp_mib
10 * @hw: pointer to the HW struct
11 * @bridge_type: type of bridge requested
12 * @mib_type: Local, Remote or both Local and Remote MIBs
13 * @buf: pointer to the caller-supplied buffer to store the MIB block
14 * @buf_size: size of the buffer (in bytes)
15 * @local_len: length of the returned Local LLDP MIB
16 * @remote_len: length of the returned Remote LLDP MIB
17 * @cd: pointer to command details structure or NULL
18 *
19 * Requests the complete LLDP MIB (entire packet). (0x0A00)
20 */
21 static enum ice_status
22 ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf,
23 u16 buf_size, u16 *local_len, u16 *remote_len,
24 struct ice_sq_cd *cd)
25 {
26 struct ice_aqc_lldp_get_mib *cmd;
27 struct ice_aq_desc desc;
28 enum ice_status status;
29
30 cmd = &desc.params.lldp_get_mib;
31
32 if (buf_size == 0 || !buf)
33 return ICE_ERR_PARAM;
34
35 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_get_mib);
36
37 cmd->type = mib_type & ICE_AQ_LLDP_MIB_TYPE_M;
38 cmd->type |= (bridge_type << ICE_AQ_LLDP_BRID_TYPE_S) &
39 ICE_AQ_LLDP_BRID_TYPE_M;
40
41 desc.datalen = cpu_to_le16(buf_size);
42
43 status = ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
44 if (!status) {
45 if (local_len)
46 *local_len = le16_to_cpu(cmd->local_len);
47 if (remote_len)
48 *remote_len = le16_to_cpu(cmd->remote_len);
49 }
50
51 return status;
52 }
53
54 /**
55 * ice_aq_cfg_lldp_mib_change
56 * @hw: pointer to the HW struct
57 * @ena_update: Enable or Disable event posting
58 * @cd: pointer to command details structure or NULL
59 *
60 * Enable or Disable posting of an event on ARQ when LLDP MIB
61 * associated with the interface changes (0x0A01)
62 */
63 static enum ice_status
64 ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update,
65 struct ice_sq_cd *cd)
66 {
67 struct ice_aqc_lldp_set_mib_change *cmd;
68 struct ice_aq_desc desc;
69
70 cmd = &desc.params.lldp_set_event;
71
72 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change);
73
74 if (!ena_update)
75 cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS;
76
77 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
78 }
79
80 /**
81 * ice_aq_stop_lldp
82 * @hw: pointer to the HW struct
83 * @shutdown_lldp_agent: True if LLDP Agent needs to be Shutdown
84 * False if LLDP Agent needs to be Stopped
85 * @persist: True if Stop/Shutdown of LLDP Agent needs to be persistent across
86 * reboots
87 * @cd: pointer to command details structure or NULL
88 *
89 * Stop or Shutdown the embedded LLDP Agent (0x0A05)
90 */
91 enum ice_status
92 ice_aq_stop_lldp(struct ice_hw *hw, bool shutdown_lldp_agent, bool persist,
93 struct ice_sq_cd *cd)
94 {
95 struct ice_aqc_lldp_stop *cmd;
96 struct ice_aq_desc desc;
97
98 cmd = &desc.params.lldp_stop;
99
100 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_stop);
101
102 if (shutdown_lldp_agent)
103 cmd->command |= ICE_AQ_LLDP_AGENT_SHUTDOWN;
104
105 if (persist)
106 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_DIS;
107
108 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
109 }
110
111 /**
112 * ice_aq_start_lldp
113 * @hw: pointer to the HW struct
114 * @persist: True if Start of LLDP Agent needs to be persistent across reboots
115 * @cd: pointer to command details structure or NULL
116 *
117 * Start the embedded LLDP Agent on all ports. (0x0A06)
118 */
119 enum ice_status
120 ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd)
121 {
122 struct ice_aqc_lldp_start *cmd;
123 struct ice_aq_desc desc;
124
125 cmd = &desc.params.lldp_start;
126
127 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start);
128
129 cmd->command = ICE_AQ_LLDP_AGENT_START;
130
131 if (persist)
132 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_ENA;
133
134 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
135 }
136
137 /**
138 * ice_get_dcbx_status
139 * @hw: pointer to the HW struct
140 *
141 * Get the DCBX status from the Firmware
142 */
143 static u8 ice_get_dcbx_status(struct ice_hw *hw)
144 {
145 u32 reg;
146
147 reg = rd32(hw, PRTDCB_GENS);
148 return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >>
149 PRTDCB_GENS_DCBX_STATUS_S);
150 }
151
152 /**
153 * ice_parse_ieee_ets_common_tlv
154 * @buf: Data buffer to be parsed for ETS CFG/REC data
155 * @ets_cfg: Container to store parsed data
156 *
157 * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
158 */
159 static void
160 ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
161 {
162 u8 offset = 0;
163 int i;
164
165 /* Priority Assignment Table (4 octets)
166 * Octets:| 1 | 2 | 3 | 4 |
167 * -----------------------------------------
168 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
169 * -----------------------------------------
170 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
171 * -----------------------------------------
172 */
173 for (i = 0; i < 4; i++) {
174 ets_cfg->prio_table[i * 2] =
175 ((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >>
176 ICE_IEEE_ETS_PRIO_1_S);
177 ets_cfg->prio_table[i * 2 + 1] =
178 ((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >>
179 ICE_IEEE_ETS_PRIO_0_S);
180 offset++;
181 }
182
183 /* TC Bandwidth Table (8 octets)
184 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
185 * ---------------------------------
186 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
187 * ---------------------------------
188 *
189 * TSA Assignment Table (8 octets)
190 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
191 * ---------------------------------
192 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
193 * ---------------------------------
194 */
195 ice_for_each_traffic_class(i) {
196 ets_cfg->tcbwtable[i] = buf[offset];
197 ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
198 }
199 }
200
201 /**
202 * ice_parse_ieee_etscfg_tlv
203 * @tlv: IEEE 802.1Qaz ETS CFG TLV
204 * @dcbcfg: Local store to update ETS CFG data
205 *
206 * Parses IEEE 802.1Qaz ETS CFG TLV
207 */
208 static void
209 ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
210 struct ice_dcbx_cfg *dcbcfg)
211 {
212 struct ice_dcb_ets_cfg *etscfg;
213 u8 *buf = tlv->tlvinfo;
214
215 /* First Octet post subtype
216 * --------------------------
217 * |will-|CBS | Re- | Max |
218 * |ing | |served| TCs |
219 * --------------------------
220 * |1bit | 1bit|3 bits|3bits|
221 */
222 etscfg = &dcbcfg->etscfg;
223 etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >>
224 ICE_IEEE_ETS_WILLING_S);
225 etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S);
226 etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >>
227 ICE_IEEE_ETS_MAXTC_S);
228
229 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
230 ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
231 }
232
233 /**
234 * ice_parse_ieee_etsrec_tlv
235 * @tlv: IEEE 802.1Qaz ETS REC TLV
236 * @dcbcfg: Local store to update ETS REC data
237 *
238 * Parses IEEE 802.1Qaz ETS REC TLV
239 */
240 static void
241 ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
242 struct ice_dcbx_cfg *dcbcfg)
243 {
244 u8 *buf = tlv->tlvinfo;
245
246 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
247 ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
248 }
249
250 /**
251 * ice_parse_ieee_pfccfg_tlv
252 * @tlv: IEEE 802.1Qaz PFC CFG TLV
253 * @dcbcfg: Local store to update PFC CFG data
254 *
255 * Parses IEEE 802.1Qaz PFC CFG TLV
256 */
257 static void
258 ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
259 struct ice_dcbx_cfg *dcbcfg)
260 {
261 u8 *buf = tlv->tlvinfo;
262
263 /* ----------------------------------------
264 * |will-|MBC | Re- | PFC | PFC Enable |
265 * |ing | |served| cap | |
266 * -----------------------------------------
267 * |1bit | 1bit|2 bits|4bits| 1 octet |
268 */
269 dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >>
270 ICE_IEEE_PFC_WILLING_S);
271 dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S);
272 dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >>
273 ICE_IEEE_PFC_CAP_S);
274 dcbcfg->pfc.pfcena = buf[1];
275 }
276
277 /**
278 * ice_parse_ieee_app_tlv
279 * @tlv: IEEE 802.1Qaz APP TLV
280 * @dcbcfg: Local store to update APP PRIO data
281 *
282 * Parses IEEE 802.1Qaz APP PRIO TLV
283 */
284 static void
285 ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
286 struct ice_dcbx_cfg *dcbcfg)
287 {
288 u16 offset = 0;
289 u16 typelen;
290 int i = 0;
291 u16 len;
292 u8 *buf;
293
294 typelen = ntohs(tlv->typelen);
295 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
296 buf = tlv->tlvinfo;
297
298 /* Removing sizeof(ouisubtype) and reserved byte from len.
299 * Remaining len div 3 is number of APP TLVs.
300 */
301 len -= (sizeof(tlv->ouisubtype) + 1);
302
303 /* Move offset to App Priority Table */
304 offset++;
305
306 /* Application Priority Table (3 octets)
307 * Octets:| 1 | 2 | 3 |
308 * -----------------------------------------
309 * |Priority|Rsrvd| Sel | Protocol ID |
310 * -----------------------------------------
311 * Bits:|23 21|20 19|18 16|15 0|
312 * -----------------------------------------
313 */
314 while (offset < len) {
315 dcbcfg->app[i].priority = ((buf[offset] &
316 ICE_IEEE_APP_PRIO_M) >>
317 ICE_IEEE_APP_PRIO_S);
318 dcbcfg->app[i].selector = ((buf[offset] &
319 ICE_IEEE_APP_SEL_M) >>
320 ICE_IEEE_APP_SEL_S);
321 dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
322 buf[offset + 2];
323 /* Move to next app */
324 offset += 3;
325 i++;
326 if (i >= ICE_DCBX_MAX_APPS)
327 break;
328 }
329
330 dcbcfg->numapps = i;
331 }
332
333 /**
334 * ice_parse_ieee_tlv
335 * @tlv: IEEE 802.1Qaz TLV
336 * @dcbcfg: Local store to update ETS REC data
337 *
338 * Get the TLV subtype and send it to parsing function
339 * based on the subtype value
340 */
341 static void
342 ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
343 {
344 u32 ouisubtype;
345 u8 subtype;
346
347 ouisubtype = ntohl(tlv->ouisubtype);
348 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
349 ICE_LLDP_TLV_SUBTYPE_S);
350 switch (subtype) {
351 case ICE_IEEE_SUBTYPE_ETS_CFG:
352 ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
353 break;
354 case ICE_IEEE_SUBTYPE_ETS_REC:
355 ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
356 break;
357 case ICE_IEEE_SUBTYPE_PFC_CFG:
358 ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
359 break;
360 case ICE_IEEE_SUBTYPE_APP_PRI:
361 ice_parse_ieee_app_tlv(tlv, dcbcfg);
362 break;
363 default:
364 break;
365 }
366 }
367
368 /**
369 * ice_parse_cee_pgcfg_tlv
370 * @tlv: CEE DCBX PG CFG TLV
371 * @dcbcfg: Local store to update ETS CFG data
372 *
373 * Parses CEE DCBX PG CFG TLV
374 */
375 static void
376 ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
377 struct ice_dcbx_cfg *dcbcfg)
378 {
379 struct ice_dcb_ets_cfg *etscfg;
380 u8 *buf = tlv->tlvinfo;
381 u16 offset = 0;
382 int i;
383
384 etscfg = &dcbcfg->etscfg;
385
386 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
387 etscfg->willing = 1;
388
389 etscfg->cbs = 0;
390 /* Priority Group Table (4 octets)
391 * Octets:| 1 | 2 | 3 | 4 |
392 * -----------------------------------------
393 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
394 * -----------------------------------------
395 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
396 * -----------------------------------------
397 */
398 for (i = 0; i < 4; i++) {
399 etscfg->prio_table[i * 2] =
400 ((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >>
401 ICE_CEE_PGID_PRIO_1_S);
402 etscfg->prio_table[i * 2 + 1] =
403 ((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >>
404 ICE_CEE_PGID_PRIO_0_S);
405 offset++;
406 }
407
408 /* PG Percentage Table (8 octets)
409 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
410 * ---------------------------------
411 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
412 * ---------------------------------
413 */
414 ice_for_each_traffic_class(i) {
415 etscfg->tcbwtable[i] = buf[offset++];
416
417 if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT)
418 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
419 else
420 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
421 }
422
423 /* Number of TCs supported (1 octet) */
424 etscfg->maxtcs = buf[offset];
425 }
426
427 /**
428 * ice_parse_cee_pfccfg_tlv
429 * @tlv: CEE DCBX PFC CFG TLV
430 * @dcbcfg: Local store to update PFC CFG data
431 *
432 * Parses CEE DCBX PFC CFG TLV
433 */
434 static void
435 ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
436 struct ice_dcbx_cfg *dcbcfg)
437 {
438 u8 *buf = tlv->tlvinfo;
439
440 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
441 dcbcfg->pfc.willing = 1;
442
443 /* ------------------------
444 * | PFC Enable | PFC TCs |
445 * ------------------------
446 * | 1 octet | 1 octet |
447 */
448 dcbcfg->pfc.pfcena = buf[0];
449 dcbcfg->pfc.pfccap = buf[1];
450 }
451
452 /**
453 * ice_parse_cee_app_tlv
454 * @tlv: CEE DCBX APP TLV
455 * @dcbcfg: Local store to update APP PRIO data
456 *
457 * Parses CEE DCBX APP PRIO TLV
458 */
459 static void
460 ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
461 {
462 u16 len, typelen, offset = 0;
463 struct ice_cee_app_prio *app;
464 u8 i;
465
466 typelen = ntohs(tlv->hdr.typelen);
467 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
468
469 dcbcfg->numapps = len / sizeof(*app);
470 if (!dcbcfg->numapps)
471 return;
472 if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
473 dcbcfg->numapps = ICE_DCBX_MAX_APPS;
474
475 for (i = 0; i < dcbcfg->numapps; i++) {
476 u8 up, selector;
477
478 app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
479 for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
480 if (app->prio_map & BIT(up))
481 break;
482
483 dcbcfg->app[i].priority = up;
484
485 /* Get Selector from lower 2 bits, and convert to IEEE */
486 selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
487 switch (selector) {
488 case ICE_CEE_APP_SEL_ETHTYPE:
489 dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
490 break;
491 case ICE_CEE_APP_SEL_TCPIP:
492 dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
493 break;
494 default:
495 /* Keep selector as it is for unknown types */
496 dcbcfg->app[i].selector = selector;
497 }
498
499 dcbcfg->app[i].prot_id = ntohs(app->protocol);
500 /* Move to next app */
501 offset += sizeof(*app);
502 }
503 }
504
505 /**
506 * ice_parse_cee_tlv
507 * @tlv: CEE DCBX TLV
508 * @dcbcfg: Local store to update DCBX config data
509 *
510 * Get the TLV subtype and send it to parsing function
511 * based on the subtype value
512 */
513 static void
514 ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
515 {
516 struct ice_cee_feat_tlv *sub_tlv;
517 u8 subtype, feat_tlv_count = 0;
518 u16 len, tlvlen, typelen;
519 u32 ouisubtype;
520
521 ouisubtype = ntohl(tlv->ouisubtype);
522 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
523 ICE_LLDP_TLV_SUBTYPE_S);
524 /* Return if not CEE DCBX */
525 if (subtype != ICE_CEE_DCBX_TYPE)
526 return;
527
528 typelen = ntohs(tlv->typelen);
529 tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
530 len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
531 sizeof(struct ice_cee_ctrl_tlv);
532 /* Return if no CEE DCBX Feature TLVs */
533 if (tlvlen <= len)
534 return;
535
536 sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
537 while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
538 u16 sublen;
539
540 typelen = ntohs(sub_tlv->hdr.typelen);
541 sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
542 subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >>
543 ICE_LLDP_TLV_TYPE_S);
544 switch (subtype) {
545 case ICE_CEE_SUBTYPE_PG_CFG:
546 ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
547 break;
548 case ICE_CEE_SUBTYPE_PFC_CFG:
549 ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
550 break;
551 case ICE_CEE_SUBTYPE_APP_PRI:
552 ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
553 break;
554 default:
555 return; /* Invalid Sub-type return */
556 }
557 feat_tlv_count++;
558 /* Move to next sub TLV */
559 sub_tlv = (struct ice_cee_feat_tlv *)
560 ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
561 sublen);
562 }
563 }
564
565 /**
566 * ice_parse_org_tlv
567 * @tlv: Organization specific TLV
568 * @dcbcfg: Local store to update ETS REC data
569 *
570 * Currently only IEEE 802.1Qaz TLV is supported, all others
571 * will be returned
572 */
573 static void
574 ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
575 {
576 u32 ouisubtype;
577 u32 oui;
578
579 ouisubtype = ntohl(tlv->ouisubtype);
580 oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S);
581 switch (oui) {
582 case ICE_IEEE_8021QAZ_OUI:
583 ice_parse_ieee_tlv(tlv, dcbcfg);
584 break;
585 case ICE_CEE_DCBX_OUI:
586 ice_parse_cee_tlv(tlv, dcbcfg);
587 break;
588 default:
589 break;
590 }
591 }
592
593 /**
594 * ice_lldp_to_dcb_cfg
595 * @lldpmib: LLDPDU to be parsed
596 * @dcbcfg: store for LLDPDU data
597 *
598 * Parse DCB configuration from the LLDPDU
599 */
600 static enum ice_status
601 ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
602 {
603 struct ice_lldp_org_tlv *tlv;
604 enum ice_status ret = 0;
605 u16 offset = 0;
606 u16 typelen;
607 u16 type;
608 u16 len;
609
610 if (!lldpmib || !dcbcfg)
611 return ICE_ERR_PARAM;
612
613 /* set to the start of LLDPDU */
614 lldpmib += ETH_HLEN;
615 tlv = (struct ice_lldp_org_tlv *)lldpmib;
616 while (1) {
617 typelen = ntohs(tlv->typelen);
618 type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S);
619 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
620 offset += sizeof(typelen) + len;
621
622 /* END TLV or beyond LLDPDU size */
623 if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
624 break;
625
626 switch (type) {
627 case ICE_TLV_TYPE_ORG:
628 ice_parse_org_tlv(tlv, dcbcfg);
629 break;
630 default:
631 break;
632 }
633
634 /* Move to next TLV */
635 tlv = (struct ice_lldp_org_tlv *)
636 ((char *)tlv + sizeof(tlv->typelen) + len);
637 }
638
639 return ret;
640 }
641
642 /**
643 * ice_aq_get_dcb_cfg
644 * @hw: pointer to the HW struct
645 * @mib_type: MIB type for the query
646 * @bridgetype: bridge type for the query (remote)
647 * @dcbcfg: store for LLDPDU data
648 *
649 * Query DCB configuration from the firmware
650 */
651 enum ice_status
652 ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
653 struct ice_dcbx_cfg *dcbcfg)
654 {
655 enum ice_status ret;
656 u8 *lldpmib;
657
658 /* Allocate the LLDPDU */
659 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
660 if (!lldpmib)
661 return ICE_ERR_NO_MEMORY;
662
663 ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
664 ICE_LLDPDU_SIZE, NULL, NULL, NULL);
665
666 if (!ret)
667 /* Parse LLDP MIB to get DCB configuration */
668 ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
669
670 devm_kfree(ice_hw_to_dev(hw), lldpmib);
671
672 return ret;
673 }
674
675 /**
676 * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
677 * @hw: pointer to the HW struct
678 * @start_dcbx_agent: True if DCBX Agent needs to be started
679 * False if DCBX Agent needs to be stopped
680 * @dcbx_agent_status: FW indicates back the DCBX agent status
681 * True if DCBX Agent is active
682 * False if DCBX Agent is stopped
683 * @cd: pointer to command details structure or NULL
684 *
685 * Start/Stop the embedded dcbx Agent. In case that this wrapper function
686 * returns ICE_SUCCESS, caller will need to check if FW returns back the same
687 * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
688 */
689 enum ice_status
690 ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
691 bool *dcbx_agent_status, struct ice_sq_cd *cd)
692 {
693 struct ice_aqc_lldp_stop_start_specific_agent *cmd;
694 enum ice_status status;
695 struct ice_aq_desc desc;
696 u16 opcode;
697
698 cmd = &desc.params.lldp_agent_ctrl;
699
700 opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
701
702 ice_fill_dflt_direct_cmd_desc(&desc, opcode);
703
704 if (start_dcbx_agent)
705 cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
706
707 status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
708
709 *dcbx_agent_status = false;
710
711 if (!status &&
712 cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
713 *dcbx_agent_status = true;
714
715 return status;
716 }
717
718 /**
719 * ice_aq_get_cee_dcb_cfg
720 * @hw: pointer to the HW struct
721 * @buff: response buffer that stores CEE operational configuration
722 * @cd: pointer to command details structure or NULL
723 *
724 * Get CEE DCBX mode operational configuration from firmware (0x0A07)
725 */
726 static enum ice_status
727 ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
728 struct ice_aqc_get_cee_dcb_cfg_resp *buff,
729 struct ice_sq_cd *cd)
730 {
731 struct ice_aq_desc desc;
732
733 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
734
735 return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
736 }
737
738 /**
739 * ice_cee_to_dcb_cfg
740 * @cee_cfg: pointer to CEE configuration struct
741 * @dcbcfg: DCB configuration struct
742 *
743 * Convert CEE configuration from firmware to DCB configuration
744 */
745 static void
746 ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
747 struct ice_dcbx_cfg *dcbcfg)
748 {
749 u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
750 u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift;
751 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
752 u8 i, err, sync, oper, app_index, ice_app_sel_type;
753 u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
754 u16 ice_app_prot_id_type;
755
756 /* CEE PG data to ETS config */
757 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
758
759 /* Note that the FW creates the oper_prio_tc nibbles reversed
760 * from those in the CEE Priority Group sub-TLV.
761 */
762 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
763 dcbcfg->etscfg.prio_table[i * 2] =
764 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
765 ICE_CEE_PGID_PRIO_0_S);
766 dcbcfg->etscfg.prio_table[i * 2 + 1] =
767 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
768 ICE_CEE_PGID_PRIO_1_S);
769 }
770
771 ice_for_each_traffic_class(i) {
772 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
773
774 if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
775 /* Map it to next empty TC */
776 dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
777 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
778 } else {
779 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
780 }
781 }
782
783 /* CEE PFC data to ETS config */
784 dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
785 dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
786
787 app_index = 0;
788 for (i = 0; i < 3; i++) {
789 if (i == 0) {
790 /* FCoE APP */
791 ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
792 ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
793 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
794 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
795 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
796 ice_app_prot_id_type = ICE_APP_PROT_ID_FCOE;
797 } else if (i == 1) {
798 /* iSCSI APP */
799 ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
800 ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
801 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
802 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
803 ice_app_sel_type = ICE_APP_SEL_TCPIP;
804 ice_app_prot_id_type = ICE_APP_PROT_ID_ISCSI;
805 } else {
806 /* FIP APP */
807 ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
808 ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
809 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
810 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
811 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
812 ice_app_prot_id_type = ICE_APP_PROT_ID_FIP;
813 }
814
815 status = (tlv_status & ice_aqc_cee_status_mask) >>
816 ice_aqc_cee_status_shift;
817 err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
818 sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
819 oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
820 /* Add FCoE/iSCSI/FIP APP if Error is False and
821 * Oper/Sync is True
822 */
823 if (!err && sync && oper) {
824 dcbcfg->app[app_index].priority =
825 (app_prio & ice_aqc_cee_app_mask) >>
826 ice_aqc_cee_app_shift;
827 dcbcfg->app[app_index].selector = ice_app_sel_type;
828 dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
829 app_index++;
830 }
831 }
832
833 dcbcfg->numapps = app_index;
834 }
835
836 /**
837 * ice_get_ieee_dcb_cfg
838 * @pi: port information structure
839 * @dcbx_mode: mode of DCBX (IEEE or CEE)
840 *
841 * Get IEEE or CEE mode DCB configuration from the Firmware
842 */
843 static enum ice_status
844 ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
845 {
846 struct ice_dcbx_cfg *dcbx_cfg = NULL;
847 enum ice_status ret;
848
849 if (!pi)
850 return ICE_ERR_PARAM;
851
852 if (dcbx_mode == ICE_DCBX_MODE_IEEE)
853 dcbx_cfg = &pi->local_dcbx_cfg;
854 else if (dcbx_mode == ICE_DCBX_MODE_CEE)
855 dcbx_cfg = &pi->desired_dcbx_cfg;
856
857 /* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
858 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
859 */
860 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
861 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
862 if (ret)
863 goto out;
864
865 /* Get Remote DCB Config */
866 dcbx_cfg = &pi->remote_dcbx_cfg;
867 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
868 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
869 /* Don't treat ENOENT as an error for Remote MIBs */
870 if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
871 ret = 0;
872
873 out:
874 return ret;
875 }
876
877 /**
878 * ice_get_dcb_cfg
879 * @pi: port information structure
880 *
881 * Get DCB configuration from the Firmware
882 */
883 enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
884 {
885 struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
886 struct ice_dcbx_cfg *dcbx_cfg;
887 enum ice_status ret;
888
889 if (!pi)
890 return ICE_ERR_PARAM;
891
892 ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
893 if (!ret) {
894 /* CEE mode */
895 dcbx_cfg = &pi->local_dcbx_cfg;
896 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_CEE;
897 dcbx_cfg->tlv_status = le32_to_cpu(cee_cfg.tlv_status);
898 ice_cee_to_dcb_cfg(&cee_cfg, dcbx_cfg);
899 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
900 } else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
901 /* CEE mode not enabled try querying IEEE data */
902 dcbx_cfg = &pi->local_dcbx_cfg;
903 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
904 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
905 }
906
907 return ret;
908 }
909
910 /**
911 * ice_init_dcb
912 * @hw: pointer to the HW struct
913 * @enable_mib_change: enable MIB change event
914 *
915 * Update DCB configuration from the Firmware
916 */
917 enum ice_status ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
918 {
919 struct ice_port_info *pi = hw->port_info;
920 enum ice_status ret = 0;
921
922 if (!hw->func_caps.common_cap.dcb)
923 return ICE_ERR_NOT_SUPPORTED;
924
925 pi->is_sw_lldp = true;
926
927 /* Get DCBX status */
928 pi->dcbx_status = ice_get_dcbx_status(hw);
929
930 if (pi->dcbx_status == ICE_DCBX_STATUS_DONE ||
931 pi->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
932 pi->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
933 /* Get current DCBX configuration */
934 ret = ice_get_dcb_cfg(pi);
935 if (ret)
936 return ret;
937 pi->is_sw_lldp = false;
938 } else if (pi->dcbx_status == ICE_DCBX_STATUS_DIS) {
939 return ICE_ERR_NOT_READY;
940 }
941
942 /* Configure the LLDP MIB change event */
943 if (enable_mib_change) {
944 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
945 if (ret)
946 pi->is_sw_lldp = true;
947 }
948
949 return ret;
950 }
951
952 /**
953 * ice_cfg_lldp_mib_change
954 * @hw: pointer to the HW struct
955 * @ena_mib: enable/disable MIB change event
956 *
957 * Configure (disable/enable) MIB
958 */
959 enum ice_status ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
960 {
961 struct ice_port_info *pi = hw->port_info;
962 enum ice_status ret;
963
964 if (!hw->func_caps.common_cap.dcb)
965 return ICE_ERR_NOT_SUPPORTED;
966
967 /* Get DCBX status */
968 pi->dcbx_status = ice_get_dcbx_status(hw);
969
970 if (pi->dcbx_status == ICE_DCBX_STATUS_DIS)
971 return ICE_ERR_NOT_READY;
972
973 ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
974 if (!ret)
975 pi->is_sw_lldp = !ena_mib;
976
977 return ret;
978 }
979
980 /**
981 * ice_add_ieee_ets_common_tlv
982 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
983 * @ets_cfg: Container for ice_dcb_ets_cfg data
984 *
985 * Populate the TLV buffer with ice_dcb_ets_cfg data
986 */
987 static void
988 ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
989 {
990 u8 priority0, priority1;
991 u8 offset = 0;
992 int i;
993
994 /* Priority Assignment Table (4 octets)
995 * Octets:| 1 | 2 | 3 | 4 |
996 * -----------------------------------------
997 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
998 * -----------------------------------------
999 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
1000 * -----------------------------------------
1001 */
1002 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
1003 priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1004 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1005 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1006 offset++;
1007 }
1008
1009 /* TC Bandwidth Table (8 octets)
1010 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1011 * ---------------------------------
1012 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1013 * ---------------------------------
1014 *
1015 * TSA Assignment Table (8 octets)
1016 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1017 * ---------------------------------
1018 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1019 * ---------------------------------
1020 */
1021 ice_for_each_traffic_class(i) {
1022 buf[offset] = ets_cfg->tcbwtable[i];
1023 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1024 offset++;
1025 }
1026 }
1027
1028 /**
1029 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1030 * @tlv: Fill the ETS config data in IEEE format
1031 * @dcbcfg: Local store which holds the DCB Config
1032 *
1033 * Prepare IEEE 802.1Qaz ETS CFG TLV
1034 */
1035 static void
1036 ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1037 {
1038 struct ice_dcb_ets_cfg *etscfg;
1039 u8 *buf = tlv->tlvinfo;
1040 u8 maxtcwilling = 0;
1041 u32 ouisubtype;
1042 u16 typelen;
1043
1044 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1045 ICE_IEEE_ETS_TLV_LEN);
1046 tlv->typelen = htons(typelen);
1047
1048 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1049 ICE_IEEE_SUBTYPE_ETS_CFG);
1050 tlv->ouisubtype = htonl(ouisubtype);
1051
1052 /* First Octet post subtype
1053 * --------------------------
1054 * |will-|CBS | Re- | Max |
1055 * |ing | |served| TCs |
1056 * --------------------------
1057 * |1bit | 1bit|3 bits|3bits|
1058 */
1059 etscfg = &dcbcfg->etscfg;
1060 if (etscfg->willing)
1061 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1062 maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1063 buf[0] = maxtcwilling;
1064
1065 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1066 ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1067 }
1068
1069 /**
1070 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1071 * @tlv: Fill ETS Recommended TLV in IEEE format
1072 * @dcbcfg: Local store which holds the DCB Config
1073 *
1074 * Prepare IEEE 802.1Qaz ETS REC TLV
1075 */
1076 static void
1077 ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1078 struct ice_dcbx_cfg *dcbcfg)
1079 {
1080 struct ice_dcb_ets_cfg *etsrec;
1081 u8 *buf = tlv->tlvinfo;
1082 u32 ouisubtype;
1083 u16 typelen;
1084
1085 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1086 ICE_IEEE_ETS_TLV_LEN);
1087 tlv->typelen = htons(typelen);
1088
1089 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1090 ICE_IEEE_SUBTYPE_ETS_REC);
1091 tlv->ouisubtype = htonl(ouisubtype);
1092
1093 etsrec = &dcbcfg->etsrec;
1094
1095 /* First Octet is reserved */
1096 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1097 ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1098 }
1099
1100 /**
1101 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1102 * @tlv: Fill PFC TLV in IEEE format
1103 * @dcbcfg: Local store which holds the PFC CFG data
1104 *
1105 * Prepare IEEE 802.1Qaz PFC CFG TLV
1106 */
1107 static void
1108 ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1109 {
1110 u8 *buf = tlv->tlvinfo;
1111 u32 ouisubtype;
1112 u16 typelen;
1113
1114 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1115 ICE_IEEE_PFC_TLV_LEN);
1116 tlv->typelen = htons(typelen);
1117
1118 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1119 ICE_IEEE_SUBTYPE_PFC_CFG);
1120 tlv->ouisubtype = htonl(ouisubtype);
1121
1122 /* ----------------------------------------
1123 * |will-|MBC | Re- | PFC | PFC Enable |
1124 * |ing | |served| cap | |
1125 * -----------------------------------------
1126 * |1bit | 1bit|2 bits|4bits| 1 octet |
1127 */
1128 if (dcbcfg->pfc.willing)
1129 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1130
1131 if (dcbcfg->pfc.mbc)
1132 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1133
1134 buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1135 buf[1] = dcbcfg->pfc.pfcena;
1136 }
1137
1138 /**
1139 * ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
1140 * @tlv: Fill APP TLV in IEEE format
1141 * @dcbcfg: Local store which holds the APP CFG data
1142 *
1143 * Prepare IEEE 802.1Qaz APP CFG TLV
1144 */
1145 static void
1146 ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1147 struct ice_dcbx_cfg *dcbcfg)
1148 {
1149 u16 typelen, len, offset = 0;
1150 u8 priority, selector, i = 0;
1151 u8 *buf = tlv->tlvinfo;
1152 u32 ouisubtype;
1153
1154 /* No APP TLVs then just return */
1155 if (dcbcfg->numapps == 0)
1156 return;
1157 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1158 ICE_IEEE_SUBTYPE_APP_PRI);
1159 tlv->ouisubtype = htonl(ouisubtype);
1160
1161 /* Move offset to App Priority Table */
1162 offset++;
1163 /* Application Priority Table (3 octets)
1164 * Octets:| 1 | 2 | 3 |
1165 * -----------------------------------------
1166 * |Priority|Rsrvd| Sel | Protocol ID |
1167 * -----------------------------------------
1168 * Bits:|23 21|20 19|18 16|15 0|
1169 * -----------------------------------------
1170 */
1171 while (i < dcbcfg->numapps) {
1172 priority = dcbcfg->app[i].priority & 0x7;
1173 selector = dcbcfg->app[i].selector & 0x7;
1174 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1175 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1176 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1177 /* Move to next app */
1178 offset += 3;
1179 i++;
1180 if (i >= ICE_DCBX_MAX_APPS)
1181 break;
1182 }
1183 /* len includes size of ouisubtype + 1 reserved + 3*numapps */
1184 len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1185 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1186 tlv->typelen = htons(typelen);
1187 }
1188
1189 /**
1190 * ice_add_dcb_tlv - Add all IEEE TLVs
1191 * @tlv: Fill TLV data in IEEE format
1192 * @dcbcfg: Local store which holds the DCB Config
1193 * @tlvid: Type of IEEE TLV
1194 *
1195 * Add tlv information
1196 */
1197 static void
1198 ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1199 u16 tlvid)
1200 {
1201 switch (tlvid) {
1202 case ICE_IEEE_TLV_ID_ETS_CFG:
1203 ice_add_ieee_ets_tlv(tlv, dcbcfg);
1204 break;
1205 case ICE_IEEE_TLV_ID_ETS_REC:
1206 ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1207 break;
1208 case ICE_IEEE_TLV_ID_PFC_CFG:
1209 ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1210 break;
1211 case ICE_IEEE_TLV_ID_APP_PRI:
1212 ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1213 break;
1214 default:
1215 break;
1216 }
1217 }
1218
1219 /**
1220 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1221 * @lldpmib: pointer to the HW struct
1222 * @miblen: length of LLDP MIB
1223 * @dcbcfg: Local store which holds the DCB Config
1224 *
1225 * Convert the DCB configuration to MIB format
1226 */
1227 static void
1228 ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1229 {
1230 u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1231 struct ice_lldp_org_tlv *tlv;
1232 u16 typelen;
1233
1234 tlv = (struct ice_lldp_org_tlv *)lldpmib;
1235 while (1) {
1236 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1237 typelen = ntohs(tlv->typelen);
1238 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
1239 if (len)
1240 offset += len + 2;
1241 /* END TLV or beyond LLDPDU size */
1242 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1243 offset > ICE_LLDPDU_SIZE)
1244 break;
1245 /* Move to next TLV */
1246 if (len)
1247 tlv = (struct ice_lldp_org_tlv *)
1248 ((char *)tlv + sizeof(tlv->typelen) + len);
1249 }
1250 *miblen = offset;
1251 }
1252
1253 /**
1254 * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1255 * @pi: port information structure
1256 *
1257 * Set DCB configuration to the Firmware
1258 */
1259 enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi)
1260 {
1261 u8 mib_type, *lldpmib = NULL;
1262 struct ice_dcbx_cfg *dcbcfg;
1263 enum ice_status ret;
1264 struct ice_hw *hw;
1265 u16 miblen;
1266
1267 if (!pi)
1268 return ICE_ERR_PARAM;
1269
1270 hw = pi->hw;
1271
1272 /* update the HW local config */
1273 dcbcfg = &pi->local_dcbx_cfg;
1274 /* Allocate the LLDPDU */
1275 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1276 if (!lldpmib)
1277 return ICE_ERR_NO_MEMORY;
1278
1279 mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1280 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1281 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1282
1283 ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1284 ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1285 NULL);
1286
1287 devm_kfree(ice_hw_to_dev(hw), lldpmib);
1288
1289 return ret;
1290 }
1291
1292 /**
1293 * ice_aq_query_port_ets - query port ETS configuration
1294 * @pi: port information structure
1295 * @buf: pointer to buffer
1296 * @buf_size: buffer size in bytes
1297 * @cd: pointer to command details structure or NULL
1298 *
1299 * query current port ETS configuration
1300 */
1301 static enum ice_status
1302 ice_aq_query_port_ets(struct ice_port_info *pi,
1303 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1304 struct ice_sq_cd *cd)
1305 {
1306 struct ice_aqc_query_port_ets *cmd;
1307 struct ice_aq_desc desc;
1308 enum ice_status status;
1309
1310 if (!pi)
1311 return ICE_ERR_PARAM;
1312 cmd = &desc.params.port_ets;
1313 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1314 cmd->port_teid = pi->root->info.node_teid;
1315
1316 status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1317 return status;
1318 }
1319
1320 /**
1321 * ice_update_port_tc_tree_cfg - update TC tree configuration
1322 * @pi: port information structure
1323 * @buf: pointer to buffer
1324 *
1325 * update the SW DB with the new TC changes
1326 */
1327 static enum ice_status
1328 ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1329 struct ice_aqc_port_ets_elem *buf)
1330 {
1331 struct ice_sched_node *node, *tc_node;
1332 struct ice_aqc_txsched_elem_data elem;
1333 enum ice_status status = 0;
1334 u32 teid1, teid2;
1335 u8 i, j;
1336
1337 if (!pi)
1338 return ICE_ERR_PARAM;
1339 /* suspend the missing TC nodes */
1340 for (i = 0; i < pi->root->num_children; i++) {
1341 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1342 ice_for_each_traffic_class(j) {
1343 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1344 if (teid1 == teid2)
1345 break;
1346 }
1347 if (j < ICE_MAX_TRAFFIC_CLASS)
1348 continue;
1349 /* TC is missing */
1350 pi->root->children[i]->in_use = false;
1351 }
1352 /* add the new TC nodes */
1353 ice_for_each_traffic_class(j) {
1354 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1355 if (teid2 == ICE_INVAL_TEID)
1356 continue;
1357 /* Is it already present in the tree ? */
1358 for (i = 0; i < pi->root->num_children; i++) {
1359 tc_node = pi->root->children[i];
1360 if (!tc_node)
1361 continue;
1362 teid1 = le32_to_cpu(tc_node->info.node_teid);
1363 if (teid1 == teid2) {
1364 tc_node->tc_num = j;
1365 tc_node->in_use = true;
1366 break;
1367 }
1368 }
1369 if (i < pi->root->num_children)
1370 continue;
1371 /* new TC */
1372 status = ice_sched_query_elem(pi->hw, teid2, &elem);
1373 if (!status)
1374 status = ice_sched_add_node(pi, 1, &elem);
1375 if (status)
1376 break;
1377 /* update the TC number */
1378 node = ice_sched_find_node_by_teid(pi->root, teid2);
1379 if (node)
1380 node->tc_num = j;
1381 }
1382 return status;
1383 }
1384
1385 /**
1386 * ice_query_port_ets - query port ETS configuration
1387 * @pi: port information structure
1388 * @buf: pointer to buffer
1389 * @buf_size: buffer size in bytes
1390 * @cd: pointer to command details structure or NULL
1391 *
1392 * query current port ETS configuration and update the
1393 * SW DB with the TC changes
1394 */
1395 enum ice_status
1396 ice_query_port_ets(struct ice_port_info *pi,
1397 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1398 struct ice_sq_cd *cd)
1399 {
1400 enum ice_status status;
1401
1402 mutex_lock(&pi->sched_lock);
1403 status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1404 if (!status)
1405 status = ice_update_port_tc_tree_cfg(pi, buf);
1406 mutex_unlock(&pi->sched_lock);
1407 return status;
1408 }
Linux with added FPC-III support