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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 */
21static int
22ice_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 int status;
29
30 cmd = &desc.params.lldp_get_mib;
31
32 if (buf_size == 0 || !buf)
33 return -EINVAL;
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 */
63static int
64ice_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 */
91int
92ice_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 */
119int ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd)
120{
121 struct ice_aqc_lldp_start *cmd;
122 struct ice_aq_desc desc;
123
124 cmd = &desc.params.lldp_start;
125
126 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start);
127
128 cmd->command = ICE_AQ_LLDP_AGENT_START;
129
130 if (persist)
131 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_ENA;
132
133 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
134}
135
136/**
137 * ice_get_dcbx_status
138 * @hw: pointer to the HW struct
139 *
140 * Get the DCBX status from the Firmware
141 */
142static u8 ice_get_dcbx_status(struct ice_hw *hw)
143{
144 u32 reg;
145
146 reg = rd32(hw, PRTDCB_GENS);
147 return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >>
148 PRTDCB_GENS_DCBX_STATUS_S);
149}
150
151/**
152 * ice_parse_ieee_ets_common_tlv
153 * @buf: Data buffer to be parsed for ETS CFG/REC data
154 * @ets_cfg: Container to store parsed data
155 *
156 * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
157 */
158static void
159ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
160{
161 u8 offset = 0;
162 int i;
163
164 /* Priority Assignment Table (4 octets)
165 * Octets:| 1 | 2 | 3 | 4 |
166 * -----------------------------------------
167 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
168 * -----------------------------------------
169 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
170 * -----------------------------------------
171 */
172 for (i = 0; i < 4; i++) {
173 ets_cfg->prio_table[i * 2] =
174 ((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >>
175 ICE_IEEE_ETS_PRIO_1_S);
176 ets_cfg->prio_table[i * 2 + 1] =
177 ((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >>
178 ICE_IEEE_ETS_PRIO_0_S);
179 offset++;
180 }
181
182 /* TC Bandwidth Table (8 octets)
183 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
184 * ---------------------------------
185 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
186 * ---------------------------------
187 *
188 * TSA Assignment Table (8 octets)
189 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
190 * ---------------------------------
191 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
192 * ---------------------------------
193 */
194 ice_for_each_traffic_class(i) {
195 ets_cfg->tcbwtable[i] = buf[offset];
196 ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
197 }
198}
199
200/**
201 * ice_parse_ieee_etscfg_tlv
202 * @tlv: IEEE 802.1Qaz ETS CFG TLV
203 * @dcbcfg: Local store to update ETS CFG data
204 *
205 * Parses IEEE 802.1Qaz ETS CFG TLV
206 */
207static void
208ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
209 struct ice_dcbx_cfg *dcbcfg)
210{
211 struct ice_dcb_ets_cfg *etscfg;
212 u8 *buf = tlv->tlvinfo;
213
214 /* First Octet post subtype
215 * --------------------------
216 * |will-|CBS | Re- | Max |
217 * |ing | |served| TCs |
218 * --------------------------
219 * |1bit | 1bit|3 bits|3bits|
220 */
221 etscfg = &dcbcfg->etscfg;
222 etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >>
223 ICE_IEEE_ETS_WILLING_S);
224 etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S);
225 etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >>
226 ICE_IEEE_ETS_MAXTC_S);
227
228 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
229 ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
230}
231
232/**
233 * ice_parse_ieee_etsrec_tlv
234 * @tlv: IEEE 802.1Qaz ETS REC TLV
235 * @dcbcfg: Local store to update ETS REC data
236 *
237 * Parses IEEE 802.1Qaz ETS REC TLV
238 */
239static void
240ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
241 struct ice_dcbx_cfg *dcbcfg)
242{
243 u8 *buf = tlv->tlvinfo;
244
245 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
246 ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
247}
248
249/**
250 * ice_parse_ieee_pfccfg_tlv
251 * @tlv: IEEE 802.1Qaz PFC CFG TLV
252 * @dcbcfg: Local store to update PFC CFG data
253 *
254 * Parses IEEE 802.1Qaz PFC CFG TLV
255 */
256static void
257ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
258 struct ice_dcbx_cfg *dcbcfg)
259{
260 u8 *buf = tlv->tlvinfo;
261
262 /* ----------------------------------------
263 * |will-|MBC | Re- | PFC | PFC Enable |
264 * |ing | |served| cap | |
265 * -----------------------------------------
266 * |1bit | 1bit|2 bits|4bits| 1 octet |
267 */
268 dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >>
269 ICE_IEEE_PFC_WILLING_S);
270 dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S);
271 dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >>
272 ICE_IEEE_PFC_CAP_S);
273 dcbcfg->pfc.pfcena = buf[1];
274}
275
276/**
277 * ice_parse_ieee_app_tlv
278 * @tlv: IEEE 802.1Qaz APP TLV
279 * @dcbcfg: Local store to update APP PRIO data
280 *
281 * Parses IEEE 802.1Qaz APP PRIO TLV
282 */
283static void
284ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
285 struct ice_dcbx_cfg *dcbcfg)
286{
287 u16 offset = 0;
288 u16 typelen;
289 int i = 0;
290 u16 len;
291 u8 *buf;
292
293 typelen = ntohs(tlv->typelen);
294 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
295 buf = tlv->tlvinfo;
296
297 /* Removing sizeof(ouisubtype) and reserved byte from len.
298 * Remaining len div 3 is number of APP TLVs.
299 */
300 len -= (sizeof(tlv->ouisubtype) + 1);
301
302 /* Move offset to App Priority Table */
303 offset++;
304
305 /* Application Priority Table (3 octets)
306 * Octets:| 1 | 2 | 3 |
307 * -----------------------------------------
308 * |Priority|Rsrvd| Sel | Protocol ID |
309 * -----------------------------------------
310 * Bits:|23 21|20 19|18 16|15 0|
311 * -----------------------------------------
312 */
313 while (offset < len) {
314 dcbcfg->app[i].priority = ((buf[offset] &
315 ICE_IEEE_APP_PRIO_M) >>
316 ICE_IEEE_APP_PRIO_S);
317 dcbcfg->app[i].selector = ((buf[offset] &
318 ICE_IEEE_APP_SEL_M) >>
319 ICE_IEEE_APP_SEL_S);
320 dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
321 buf[offset + 2];
322 /* Move to next app */
323 offset += 3;
324 i++;
325 if (i >= ICE_DCBX_MAX_APPS)
326 break;
327 }
328
329 dcbcfg->numapps = i;
330}
331
332/**
333 * ice_parse_ieee_tlv
334 * @tlv: IEEE 802.1Qaz TLV
335 * @dcbcfg: Local store to update ETS REC data
336 *
337 * Get the TLV subtype and send it to parsing function
338 * based on the subtype value
339 */
340static void
341ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
342{
343 u32 ouisubtype;
344 u8 subtype;
345
346 ouisubtype = ntohl(tlv->ouisubtype);
347 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
348 ICE_LLDP_TLV_SUBTYPE_S);
349 switch (subtype) {
350 case ICE_IEEE_SUBTYPE_ETS_CFG:
351 ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
352 break;
353 case ICE_IEEE_SUBTYPE_ETS_REC:
354 ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
355 break;
356 case ICE_IEEE_SUBTYPE_PFC_CFG:
357 ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
358 break;
359 case ICE_IEEE_SUBTYPE_APP_PRI:
360 ice_parse_ieee_app_tlv(tlv, dcbcfg);
361 break;
362 default:
363 break;
364 }
365}
366
367/**
368 * ice_parse_cee_pgcfg_tlv
369 * @tlv: CEE DCBX PG CFG TLV
370 * @dcbcfg: Local store to update ETS CFG data
371 *
372 * Parses CEE DCBX PG CFG TLV
373 */
374static void
375ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
376 struct ice_dcbx_cfg *dcbcfg)
377{
378 struct ice_dcb_ets_cfg *etscfg;
379 u8 *buf = tlv->tlvinfo;
380 u16 offset = 0;
381 int i;
382
383 etscfg = &dcbcfg->etscfg;
384
385 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
386 etscfg->willing = 1;
387
388 etscfg->cbs = 0;
389 /* Priority Group Table (4 octets)
390 * Octets:| 1 | 2 | 3 | 4 |
391 * -----------------------------------------
392 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
393 * -----------------------------------------
394 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
395 * -----------------------------------------
396 */
397 for (i = 0; i < 4; i++) {
398 etscfg->prio_table[i * 2] =
399 ((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >>
400 ICE_CEE_PGID_PRIO_1_S);
401 etscfg->prio_table[i * 2 + 1] =
402 ((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >>
403 ICE_CEE_PGID_PRIO_0_S);
404 offset++;
405 }
406
407 /* PG Percentage Table (8 octets)
408 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
409 * ---------------------------------
410 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
411 * ---------------------------------
412 */
413 ice_for_each_traffic_class(i) {
414 etscfg->tcbwtable[i] = buf[offset++];
415
416 if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT)
417 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
418 else
419 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
420 }
421
422 /* Number of TCs supported (1 octet) */
423 etscfg->maxtcs = buf[offset];
424}
425
426/**
427 * ice_parse_cee_pfccfg_tlv
428 * @tlv: CEE DCBX PFC CFG TLV
429 * @dcbcfg: Local store to update PFC CFG data
430 *
431 * Parses CEE DCBX PFC CFG TLV
432 */
433static void
434ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
435 struct ice_dcbx_cfg *dcbcfg)
436{
437 u8 *buf = tlv->tlvinfo;
438
439 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
440 dcbcfg->pfc.willing = 1;
441
442 /* ------------------------
443 * | PFC Enable | PFC TCs |
444 * ------------------------
445 * | 1 octet | 1 octet |
446 */
447 dcbcfg->pfc.pfcena = buf[0];
448 dcbcfg->pfc.pfccap = buf[1];
449}
450
451/**
452 * ice_parse_cee_app_tlv
453 * @tlv: CEE DCBX APP TLV
454 * @dcbcfg: Local store to update APP PRIO data
455 *
456 * Parses CEE DCBX APP PRIO TLV
457 */
458static void
459ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
460{
461 u16 len, typelen, offset = 0;
462 struct ice_cee_app_prio *app;
463 u8 i;
464
465 typelen = ntohs(tlv->hdr.typelen);
466 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
467
468 dcbcfg->numapps = len / sizeof(*app);
469 if (!dcbcfg->numapps)
470 return;
471 if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
472 dcbcfg->numapps = ICE_DCBX_MAX_APPS;
473
474 for (i = 0; i < dcbcfg->numapps; i++) {
475 u8 up, selector;
476
477 app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
478 for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
479 if (app->prio_map & BIT(up))
480 break;
481
482 dcbcfg->app[i].priority = up;
483
484 /* Get Selector from lower 2 bits, and convert to IEEE */
485 selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
486 switch (selector) {
487 case ICE_CEE_APP_SEL_ETHTYPE:
488 dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
489 break;
490 case ICE_CEE_APP_SEL_TCPIP:
491 dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
492 break;
493 default:
494 /* Keep selector as it is for unknown types */
495 dcbcfg->app[i].selector = selector;
496 }
497
498 dcbcfg->app[i].prot_id = ntohs(app->protocol);
499 /* Move to next app */
500 offset += sizeof(*app);
501 }
502}
503
504/**
505 * ice_parse_cee_tlv
506 * @tlv: CEE DCBX TLV
507 * @dcbcfg: Local store to update DCBX config data
508 *
509 * Get the TLV subtype and send it to parsing function
510 * based on the subtype value
511 */
512static void
513ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
514{
515 struct ice_cee_feat_tlv *sub_tlv;
516 u8 subtype, feat_tlv_count = 0;
517 u16 len, tlvlen, typelen;
518 u32 ouisubtype;
519
520 ouisubtype = ntohl(tlv->ouisubtype);
521 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
522 ICE_LLDP_TLV_SUBTYPE_S);
523 /* Return if not CEE DCBX */
524 if (subtype != ICE_CEE_DCBX_TYPE)
525 return;
526
527 typelen = ntohs(tlv->typelen);
528 tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
529 len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
530 sizeof(struct ice_cee_ctrl_tlv);
531 /* Return if no CEE DCBX Feature TLVs */
532 if (tlvlen <= len)
533 return;
534
535 sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
536 while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
537 u16 sublen;
538
539 typelen = ntohs(sub_tlv->hdr.typelen);
540 sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
541 subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >>
542 ICE_LLDP_TLV_TYPE_S);
543 switch (subtype) {
544 case ICE_CEE_SUBTYPE_PG_CFG:
545 ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
546 break;
547 case ICE_CEE_SUBTYPE_PFC_CFG:
548 ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
549 break;
550 case ICE_CEE_SUBTYPE_APP_PRI:
551 ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
552 break;
553 default:
554 return; /* Invalid Sub-type return */
555 }
556 feat_tlv_count++;
557 /* Move to next sub TLV */
558 sub_tlv = (struct ice_cee_feat_tlv *)
559 ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
560 sublen);
561 }
562}
563
564/**
565 * ice_parse_org_tlv
566 * @tlv: Organization specific TLV
567 * @dcbcfg: Local store to update ETS REC data
568 *
569 * Currently only IEEE 802.1Qaz TLV is supported, all others
570 * will be returned
571 */
572static void
573ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
574{
575 u32 ouisubtype;
576 u32 oui;
577
578 ouisubtype = ntohl(tlv->ouisubtype);
579 oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S);
580 switch (oui) {
581 case ICE_IEEE_8021QAZ_OUI:
582 ice_parse_ieee_tlv(tlv, dcbcfg);
583 break;
584 case ICE_CEE_DCBX_OUI:
585 ice_parse_cee_tlv(tlv, dcbcfg);
586 break;
587 default:
588 break;
589 }
590}
591
592/**
593 * ice_lldp_to_dcb_cfg
594 * @lldpmib: LLDPDU to be parsed
595 * @dcbcfg: store for LLDPDU data
596 *
597 * Parse DCB configuration from the LLDPDU
598 */
599static int ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
600{
601 struct ice_lldp_org_tlv *tlv;
602 u16 offset = 0;
603 int ret = 0;
604 u16 typelen;
605 u16 type;
606 u16 len;
607
608 if (!lldpmib || !dcbcfg)
609 return -EINVAL;
610
611 /* set to the start of LLDPDU */
612 lldpmib += ETH_HLEN;
613 tlv = (struct ice_lldp_org_tlv *)lldpmib;
614 while (1) {
615 typelen = ntohs(tlv->typelen);
616 type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S);
617 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
618 offset += sizeof(typelen) + len;
619
620 /* END TLV or beyond LLDPDU size */
621 if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
622 break;
623
624 switch (type) {
625 case ICE_TLV_TYPE_ORG:
626 ice_parse_org_tlv(tlv, dcbcfg);
627 break;
628 default:
629 break;
630 }
631
632 /* Move to next TLV */
633 tlv = (struct ice_lldp_org_tlv *)
634 ((char *)tlv + sizeof(tlv->typelen) + len);
635 }
636
637 return ret;
638}
639
640/**
641 * ice_aq_get_dcb_cfg
642 * @hw: pointer to the HW struct
643 * @mib_type: MIB type for the query
644 * @bridgetype: bridge type for the query (remote)
645 * @dcbcfg: store for LLDPDU data
646 *
647 * Query DCB configuration from the firmware
648 */
649int
650ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
651 struct ice_dcbx_cfg *dcbcfg)
652{
653 u8 *lldpmib;
654 int ret;
655
656 /* Allocate the LLDPDU */
657 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
658 if (!lldpmib)
659 return -ENOMEM;
660
661 ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
662 ICE_LLDPDU_SIZE, NULL, NULL, NULL);
663
664 if (!ret)
665 /* Parse LLDP MIB to get DCB configuration */
666 ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
667
668 devm_kfree(ice_hw_to_dev(hw), lldpmib);
669
670 return ret;
671}
672
673/**
674 * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
675 * @hw: pointer to the HW struct
676 * @start_dcbx_agent: True if DCBX Agent needs to be started
677 * False if DCBX Agent needs to be stopped
678 * @dcbx_agent_status: FW indicates back the DCBX agent status
679 * True if DCBX Agent is active
680 * False if DCBX Agent is stopped
681 * @cd: pointer to command details structure or NULL
682 *
683 * Start/Stop the embedded dcbx Agent. In case that this wrapper function
684 * returns 0, caller will need to check if FW returns back the same
685 * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
686 */
687int
688ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
689 bool *dcbx_agent_status, struct ice_sq_cd *cd)
690{
691 struct ice_aqc_lldp_stop_start_specific_agent *cmd;
692 struct ice_aq_desc desc;
693 u16 opcode;
694 int status;
695
696 cmd = &desc.params.lldp_agent_ctrl;
697
698 opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
699
700 ice_fill_dflt_direct_cmd_desc(&desc, opcode);
701
702 if (start_dcbx_agent)
703 cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
704
705 status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
706
707 *dcbx_agent_status = false;
708
709 if (!status &&
710 cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
711 *dcbx_agent_status = true;
712
713 return status;
714}
715
716/**
717 * ice_aq_get_cee_dcb_cfg
718 * @hw: pointer to the HW struct
719 * @buff: response buffer that stores CEE operational configuration
720 * @cd: pointer to command details structure or NULL
721 *
722 * Get CEE DCBX mode operational configuration from firmware (0x0A07)
723 */
724static int
725ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
726 struct ice_aqc_get_cee_dcb_cfg_resp *buff,
727 struct ice_sq_cd *cd)
728{
729 struct ice_aq_desc desc;
730
731 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
732
733 return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
734}
735
736/**
737 * ice_aq_set_pfc_mode - Set PFC mode
738 * @hw: pointer to the HW struct
739 * @pfc_mode: value of PFC mode to set
740 * @cd: pointer to command details structure or NULL
741 *
742 * This AQ call configures the PFC mode to DSCP-based PFC mode or
743 * VLAN-based PFC (0x0303)
744 */
745int ice_aq_set_pfc_mode(struct ice_hw *hw, u8 pfc_mode, struct ice_sq_cd *cd)
746{
747 struct ice_aqc_set_query_pfc_mode *cmd;
748 struct ice_aq_desc desc;
749 int status;
750
751 if (pfc_mode > ICE_AQC_PFC_DSCP_BASED_PFC)
752 return -EINVAL;
753
754 cmd = &desc.params.set_query_pfc_mode;
755
756 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_pfc_mode);
757
758 cmd->pfc_mode = pfc_mode;
759
760 status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
761 if (status)
762 return status;
763
764 /* FW will write the PFC mode set back into cmd->pfc_mode, but if DCB is
765 * disabled, FW will write back 0 to cmd->pfc_mode. After the AQ has
766 * been executed, check if cmd->pfc_mode is what was requested. If not,
767 * return an error.
768 */
769 if (cmd->pfc_mode != pfc_mode)
770 return -EOPNOTSUPP;
771
772 return 0;
773}
774
775/**
776 * ice_cee_to_dcb_cfg
777 * @cee_cfg: pointer to CEE configuration struct
778 * @pi: port information structure
779 *
780 * Convert CEE configuration from firmware to DCB configuration
781 */
782static void
783ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
784 struct ice_port_info *pi)
785{
786 u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
787 u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift, j;
788 u8 i, err, sync, oper, app_index, ice_app_sel_type;
789 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
790 u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
791 struct ice_dcbx_cfg *cmp_dcbcfg, *dcbcfg;
792 u16 ice_app_prot_id_type;
793
794 dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
795 dcbcfg->dcbx_mode = ICE_DCBX_MODE_CEE;
796 dcbcfg->tlv_status = tlv_status;
797
798 /* CEE PG data */
799 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
800
801 /* Note that the FW creates the oper_prio_tc nibbles reversed
802 * from those in the CEE Priority Group sub-TLV.
803 */
804 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
805 dcbcfg->etscfg.prio_table[i * 2] =
806 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
807 ICE_CEE_PGID_PRIO_0_S);
808 dcbcfg->etscfg.prio_table[i * 2 + 1] =
809 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
810 ICE_CEE_PGID_PRIO_1_S);
811 }
812
813 ice_for_each_traffic_class(i) {
814 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
815
816 if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
817 /* Map it to next empty TC */
818 dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
819 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
820 } else {
821 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
822 }
823 }
824
825 /* CEE PFC data */
826 dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
827 dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
828
829 /* CEE APP TLV data */
830 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
831 cmp_dcbcfg = &pi->qos_cfg.desired_dcbx_cfg;
832 else
833 cmp_dcbcfg = &pi->qos_cfg.remote_dcbx_cfg;
834
835 app_index = 0;
836 for (i = 0; i < 3; i++) {
837 if (i == 0) {
838 /* FCoE APP */
839 ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
840 ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
841 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
842 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
843 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
844 ice_app_prot_id_type = ETH_P_FCOE;
845 } else if (i == 1) {
846 /* iSCSI APP */
847 ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
848 ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
849 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
850 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
851 ice_app_sel_type = ICE_APP_SEL_TCPIP;
852 ice_app_prot_id_type = ISCSI_LISTEN_PORT;
853
854 for (j = 0; j < cmp_dcbcfg->numapps; j++) {
855 u16 prot_id = cmp_dcbcfg->app[j].prot_id;
856 u8 sel = cmp_dcbcfg->app[j].selector;
857
858 if (sel == ICE_APP_SEL_TCPIP &&
859 (prot_id == ISCSI_LISTEN_PORT ||
860 prot_id == ICE_APP_PROT_ID_ISCSI_860)) {
861 ice_app_prot_id_type = prot_id;
862 break;
863 }
864 }
865 } else {
866 /* FIP APP */
867 ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
868 ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
869 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
870 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
871 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
872 ice_app_prot_id_type = ETH_P_FIP;
873 }
874
875 status = (tlv_status & ice_aqc_cee_status_mask) >>
876 ice_aqc_cee_status_shift;
877 err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
878 sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
879 oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
880 /* Add FCoE/iSCSI/FIP APP if Error is False and
881 * Oper/Sync is True
882 */
883 if (!err && sync && oper) {
884 dcbcfg->app[app_index].priority =
885 (app_prio & ice_aqc_cee_app_mask) >>
886 ice_aqc_cee_app_shift;
887 dcbcfg->app[app_index].selector = ice_app_sel_type;
888 dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
889 app_index++;
890 }
891 }
892
893 dcbcfg->numapps = app_index;
894}
895
896/**
897 * ice_get_ieee_or_cee_dcb_cfg
898 * @pi: port information structure
899 * @dcbx_mode: mode of DCBX (IEEE or CEE)
900 *
901 * Get IEEE or CEE mode DCB configuration from the Firmware
902 */
903static int ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
904{
905 struct ice_dcbx_cfg *dcbx_cfg = NULL;
906 int ret;
907
908 if (!pi)
909 return -EINVAL;
910
911 if (dcbx_mode == ICE_DCBX_MODE_IEEE)
912 dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
913 else if (dcbx_mode == ICE_DCBX_MODE_CEE)
914 dcbx_cfg = &pi->qos_cfg.desired_dcbx_cfg;
915
916 /* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
917 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
918 */
919 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
920 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
921 if (ret)
922 goto out;
923
924 /* Get Remote DCB Config */
925 dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg;
926 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
927 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
928 /* Don't treat ENOENT as an error for Remote MIBs */
929 if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
930 ret = 0;
931
932out:
933 return ret;
934}
935
936/**
937 * ice_get_dcb_cfg
938 * @pi: port information structure
939 *
940 * Get DCB configuration from the Firmware
941 */
942int ice_get_dcb_cfg(struct ice_port_info *pi)
943{
944 struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
945 struct ice_dcbx_cfg *dcbx_cfg;
946 int ret;
947
948 if (!pi)
949 return -EINVAL;
950
951 ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
952 if (!ret) {
953 /* CEE mode */
954 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
955 ice_cee_to_dcb_cfg(&cee_cfg, pi);
956 } else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
957 /* CEE mode not enabled try querying IEEE data */
958 dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
959 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
960 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
961 }
962
963 return ret;
964}
965
966/**
967 * ice_init_dcb
968 * @hw: pointer to the HW struct
969 * @enable_mib_change: enable MIB change event
970 *
971 * Update DCB configuration from the Firmware
972 */
973int ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
974{
975 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
976 int ret = 0;
977
978 if (!hw->func_caps.common_cap.dcb)
979 return -EOPNOTSUPP;
980
981 qos_cfg->is_sw_lldp = true;
982
983 /* Get DCBX status */
984 qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
985
986 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DONE ||
987 qos_cfg->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
988 qos_cfg->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
989 /* Get current DCBX configuration */
990 ret = ice_get_dcb_cfg(hw->port_info);
991 if (ret)
992 return ret;
993 qos_cfg->is_sw_lldp = false;
994 } else if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) {
995 return -EBUSY;
996 }
997
998 /* Configure the LLDP MIB change event */
999 if (enable_mib_change) {
1000 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
1001 if (ret)
1002 qos_cfg->is_sw_lldp = true;
1003 }
1004
1005 return ret;
1006}
1007
1008/**
1009 * ice_cfg_lldp_mib_change
1010 * @hw: pointer to the HW struct
1011 * @ena_mib: enable/disable MIB change event
1012 *
1013 * Configure (disable/enable) MIB
1014 */
1015int ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
1016{
1017 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
1018 int ret;
1019
1020 if (!hw->func_caps.common_cap.dcb)
1021 return -EOPNOTSUPP;
1022
1023 /* Get DCBX status */
1024 qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
1025
1026 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS)
1027 return -EBUSY;
1028
1029 ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
1030 if (!ret)
1031 qos_cfg->is_sw_lldp = !ena_mib;
1032
1033 return ret;
1034}
1035
1036/**
1037 * ice_add_ieee_ets_common_tlv
1038 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
1039 * @ets_cfg: Container for ice_dcb_ets_cfg data
1040 *
1041 * Populate the TLV buffer with ice_dcb_ets_cfg data
1042 */
1043static void
1044ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
1045{
1046 u8 priority0, priority1;
1047 u8 offset = 0;
1048 int i;
1049
1050 /* Priority Assignment Table (4 octets)
1051 * Octets:| 1 | 2 | 3 | 4 |
1052 * -----------------------------------------
1053 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1054 * -----------------------------------------
1055 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
1056 * -----------------------------------------
1057 */
1058 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
1059 priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1060 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1061 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1062 offset++;
1063 }
1064
1065 /* TC Bandwidth Table (8 octets)
1066 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1067 * ---------------------------------
1068 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1069 * ---------------------------------
1070 *
1071 * TSA Assignment Table (8 octets)
1072 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1073 * ---------------------------------
1074 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1075 * ---------------------------------
1076 */
1077 ice_for_each_traffic_class(i) {
1078 buf[offset] = ets_cfg->tcbwtable[i];
1079 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1080 offset++;
1081 }
1082}
1083
1084/**
1085 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1086 * @tlv: Fill the ETS config data in IEEE format
1087 * @dcbcfg: Local store which holds the DCB Config
1088 *
1089 * Prepare IEEE 802.1Qaz ETS CFG TLV
1090 */
1091static void
1092ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1093{
1094 struct ice_dcb_ets_cfg *etscfg;
1095 u8 *buf = tlv->tlvinfo;
1096 u8 maxtcwilling = 0;
1097 u32 ouisubtype;
1098 u16 typelen;
1099
1100 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1101 ICE_IEEE_ETS_TLV_LEN);
1102 tlv->typelen = htons(typelen);
1103
1104 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1105 ICE_IEEE_SUBTYPE_ETS_CFG);
1106 tlv->ouisubtype = htonl(ouisubtype);
1107
1108 /* First Octet post subtype
1109 * --------------------------
1110 * |will-|CBS | Re- | Max |
1111 * |ing | |served| TCs |
1112 * --------------------------
1113 * |1bit | 1bit|3 bits|3bits|
1114 */
1115 etscfg = &dcbcfg->etscfg;
1116 if (etscfg->willing)
1117 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1118 maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1119 buf[0] = maxtcwilling;
1120
1121 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1122 ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1123}
1124
1125/**
1126 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1127 * @tlv: Fill ETS Recommended TLV in IEEE format
1128 * @dcbcfg: Local store which holds the DCB Config
1129 *
1130 * Prepare IEEE 802.1Qaz ETS REC TLV
1131 */
1132static void
1133ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1134 struct ice_dcbx_cfg *dcbcfg)
1135{
1136 struct ice_dcb_ets_cfg *etsrec;
1137 u8 *buf = tlv->tlvinfo;
1138 u32 ouisubtype;
1139 u16 typelen;
1140
1141 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1142 ICE_IEEE_ETS_TLV_LEN);
1143 tlv->typelen = htons(typelen);
1144
1145 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1146 ICE_IEEE_SUBTYPE_ETS_REC);
1147 tlv->ouisubtype = htonl(ouisubtype);
1148
1149 etsrec = &dcbcfg->etsrec;
1150
1151 /* First Octet is reserved */
1152 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1153 ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1154}
1155
1156/**
1157 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1158 * @tlv: Fill PFC TLV in IEEE format
1159 * @dcbcfg: Local store which holds the PFC CFG data
1160 *
1161 * Prepare IEEE 802.1Qaz PFC CFG TLV
1162 */
1163static void
1164ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1165{
1166 u8 *buf = tlv->tlvinfo;
1167 u32 ouisubtype;
1168 u16 typelen;
1169
1170 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1171 ICE_IEEE_PFC_TLV_LEN);
1172 tlv->typelen = htons(typelen);
1173
1174 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1175 ICE_IEEE_SUBTYPE_PFC_CFG);
1176 tlv->ouisubtype = htonl(ouisubtype);
1177
1178 /* ----------------------------------------
1179 * |will-|MBC | Re- | PFC | PFC Enable |
1180 * |ing | |served| cap | |
1181 * -----------------------------------------
1182 * |1bit | 1bit|2 bits|4bits| 1 octet |
1183 */
1184 if (dcbcfg->pfc.willing)
1185 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1186
1187 if (dcbcfg->pfc.mbc)
1188 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1189
1190 buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1191 buf[1] = dcbcfg->pfc.pfcena;
1192}
1193
1194/**
1195 * ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
1196 * @tlv: Fill APP TLV in IEEE format
1197 * @dcbcfg: Local store which holds the APP CFG data
1198 *
1199 * Prepare IEEE 802.1Qaz APP CFG TLV
1200 */
1201static void
1202ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1203 struct ice_dcbx_cfg *dcbcfg)
1204{
1205 u16 typelen, len, offset = 0;
1206 u8 priority, selector, i = 0;
1207 u8 *buf = tlv->tlvinfo;
1208 u32 ouisubtype;
1209
1210 /* No APP TLVs then just return */
1211 if (dcbcfg->numapps == 0)
1212 return;
1213 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1214 ICE_IEEE_SUBTYPE_APP_PRI);
1215 tlv->ouisubtype = htonl(ouisubtype);
1216
1217 /* Move offset to App Priority Table */
1218 offset++;
1219 /* Application Priority Table (3 octets)
1220 * Octets:| 1 | 2 | 3 |
1221 * -----------------------------------------
1222 * |Priority|Rsrvd| Sel | Protocol ID |
1223 * -----------------------------------------
1224 * Bits:|23 21|20 19|18 16|15 0|
1225 * -----------------------------------------
1226 */
1227 while (i < dcbcfg->numapps) {
1228 priority = dcbcfg->app[i].priority & 0x7;
1229 selector = dcbcfg->app[i].selector & 0x7;
1230 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1231 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1232 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1233 /* Move to next app */
1234 offset += 3;
1235 i++;
1236 if (i >= ICE_DCBX_MAX_APPS)
1237 break;
1238 }
1239 /* len includes size of ouisubtype + 1 reserved + 3*numapps */
1240 len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1241 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1242 tlv->typelen = htons(typelen);
1243}
1244
1245/**
1246 * ice_add_dscp_up_tlv - Prepare DSCP to UP TLV
1247 * @tlv: location to build the TLV data
1248 * @dcbcfg: location of data to convert to TLV
1249 */
1250static void
1251ice_add_dscp_up_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1252{
1253 u8 *buf = tlv->tlvinfo;
1254 u32 ouisubtype;
1255 u16 typelen;
1256 int i;
1257
1258 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1259 ICE_DSCP_UP_TLV_LEN);
1260 tlv->typelen = htons(typelen);
1261
1262 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1263 ICE_DSCP_SUBTYPE_DSCP2UP);
1264 tlv->ouisubtype = htonl(ouisubtype);
1265
1266 /* bytes 0 - 63 - IPv4 DSCP2UP LUT */
1267 for (i = 0; i < ICE_DSCP_NUM_VAL; i++) {
1268 /* IPv4 mapping */
1269 buf[i] = dcbcfg->dscp_map[i];
1270 /* IPv6 mapping */
1271 buf[i + ICE_DSCP_IPV6_OFFSET] = dcbcfg->dscp_map[i];
1272 }
1273
1274 /* byte 64 - IPv4 untagged traffic */
1275 buf[i] = 0;
1276
1277 /* byte 144 - IPv6 untagged traffic */
1278 buf[i + ICE_DSCP_IPV6_OFFSET] = 0;
1279}
1280
1281#define ICE_BYTES_PER_TC 8
1282/**
1283 * ice_add_dscp_enf_tlv - Prepare DSCP Enforcement TLV
1284 * @tlv: location to build the TLV data
1285 */
1286static void
1287ice_add_dscp_enf_tlv(struct ice_lldp_org_tlv *tlv)
1288{
1289 u8 *buf = tlv->tlvinfo;
1290 u32 ouisubtype;
1291 u16 typelen;
1292
1293 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1294 ICE_DSCP_ENF_TLV_LEN);
1295 tlv->typelen = htons(typelen);
1296
1297 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1298 ICE_DSCP_SUBTYPE_ENFORCE);
1299 tlv->ouisubtype = htonl(ouisubtype);
1300
1301 /* Allow all DSCP values to be valid for all TC's (IPv4 and IPv6) */
1302 memset(buf, 0, 2 * (ICE_MAX_TRAFFIC_CLASS * ICE_BYTES_PER_TC));
1303}
1304
1305/**
1306 * ice_add_dscp_tc_bw_tlv - Prepare DSCP BW for TC TLV
1307 * @tlv: location to build the TLV data
1308 * @dcbcfg: location of the data to convert to TLV
1309 */
1310static void
1311ice_add_dscp_tc_bw_tlv(struct ice_lldp_org_tlv *tlv,
1312 struct ice_dcbx_cfg *dcbcfg)
1313{
1314 struct ice_dcb_ets_cfg *etscfg;
1315 u8 *buf = tlv->tlvinfo;
1316 u32 ouisubtype;
1317 u8 offset = 0;
1318 u16 typelen;
1319 int i;
1320
1321 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1322 ICE_DSCP_TC_BW_TLV_LEN);
1323 tlv->typelen = htons(typelen);
1324
1325 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1326 ICE_DSCP_SUBTYPE_TCBW);
1327 tlv->ouisubtype = htonl(ouisubtype);
1328
1329 /* First Octect after subtype
1330 * ----------------------------
1331 * | RSV | CBS | RSV | Max TCs |
1332 * | 1b | 1b | 3b | 3b |
1333 * ----------------------------
1334 */
1335 etscfg = &dcbcfg->etscfg;
1336 buf[0] = etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1337
1338 /* bytes 1 - 4 reserved */
1339 offset = 5;
1340
1341 /* TC BW table
1342 * bytes 0 - 7 for TC 0 - 7
1343 *
1344 * TSA Assignment table
1345 * bytes 8 - 15 for TC 0 - 7
1346 */
1347 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) {
1348 buf[offset] = etscfg->tcbwtable[i];
1349 buf[offset + ICE_MAX_TRAFFIC_CLASS] = etscfg->tsatable[i];
1350 offset++;
1351 }
1352}
1353
1354/**
1355 * ice_add_dscp_pfc_tlv - Prepare DSCP PFC TLV
1356 * @tlv: Fill PFC TLV in IEEE format
1357 * @dcbcfg: Local store which holds the PFC CFG data
1358 */
1359static void
1360ice_add_dscp_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1361{
1362 u8 *buf = tlv->tlvinfo;
1363 u32 ouisubtype;
1364 u16 typelen;
1365
1366 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1367 ICE_DSCP_PFC_TLV_LEN);
1368 tlv->typelen = htons(typelen);
1369
1370 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1371 ICE_DSCP_SUBTYPE_PFC);
1372 tlv->ouisubtype = htonl(ouisubtype);
1373
1374 buf[0] = dcbcfg->pfc.pfccap & 0xF;
1375 buf[1] = dcbcfg->pfc.pfcena & 0xF;
1376}
1377
1378/**
1379 * ice_add_dcb_tlv - Add all IEEE or DSCP TLVs
1380 * @tlv: Fill TLV data in IEEE format
1381 * @dcbcfg: Local store which holds the DCB Config
1382 * @tlvid: Type of IEEE TLV
1383 *
1384 * Add tlv information
1385 */
1386static void
1387ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1388 u16 tlvid)
1389{
1390 if (dcbcfg->pfc_mode == ICE_QOS_MODE_VLAN) {
1391 switch (tlvid) {
1392 case ICE_IEEE_TLV_ID_ETS_CFG:
1393 ice_add_ieee_ets_tlv(tlv, dcbcfg);
1394 break;
1395 case ICE_IEEE_TLV_ID_ETS_REC:
1396 ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1397 break;
1398 case ICE_IEEE_TLV_ID_PFC_CFG:
1399 ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1400 break;
1401 case ICE_IEEE_TLV_ID_APP_PRI:
1402 ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1403 break;
1404 default:
1405 break;
1406 }
1407 } else {
1408 /* pfc_mode == ICE_QOS_MODE_DSCP */
1409 switch (tlvid) {
1410 case ICE_TLV_ID_DSCP_UP:
1411 ice_add_dscp_up_tlv(tlv, dcbcfg);
1412 break;
1413 case ICE_TLV_ID_DSCP_ENF:
1414 ice_add_dscp_enf_tlv(tlv);
1415 break;
1416 case ICE_TLV_ID_DSCP_TC_BW:
1417 ice_add_dscp_tc_bw_tlv(tlv, dcbcfg);
1418 break;
1419 case ICE_TLV_ID_DSCP_TO_PFC:
1420 ice_add_dscp_pfc_tlv(tlv, dcbcfg);
1421 break;
1422 default:
1423 break;
1424 }
1425 }
1426}
1427
1428/**
1429 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1430 * @lldpmib: pointer to the HW struct
1431 * @miblen: length of LLDP MIB
1432 * @dcbcfg: Local store which holds the DCB Config
1433 *
1434 * Convert the DCB configuration to MIB format
1435 */
1436static void
1437ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1438{
1439 u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1440 struct ice_lldp_org_tlv *tlv;
1441 u16 typelen;
1442
1443 tlv = (struct ice_lldp_org_tlv *)lldpmib;
1444 while (1) {
1445 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1446 typelen = ntohs(tlv->typelen);
1447 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
1448 if (len)
1449 offset += len + 2;
1450 /* END TLV or beyond LLDPDU size */
1451 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1452 offset > ICE_LLDPDU_SIZE)
1453 break;
1454 /* Move to next TLV */
1455 if (len)
1456 tlv = (struct ice_lldp_org_tlv *)
1457 ((char *)tlv + sizeof(tlv->typelen) + len);
1458 }
1459 *miblen = offset;
1460}
1461
1462/**
1463 * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1464 * @pi: port information structure
1465 *
1466 * Set DCB configuration to the Firmware
1467 */
1468int ice_set_dcb_cfg(struct ice_port_info *pi)
1469{
1470 u8 mib_type, *lldpmib = NULL;
1471 struct ice_dcbx_cfg *dcbcfg;
1472 struct ice_hw *hw;
1473 u16 miblen;
1474 int ret;
1475
1476 if (!pi)
1477 return -EINVAL;
1478
1479 hw = pi->hw;
1480
1481 /* update the HW local config */
1482 dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
1483 /* Allocate the LLDPDU */
1484 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1485 if (!lldpmib)
1486 return -ENOMEM;
1487
1488 mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1489 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1490 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1491
1492 ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1493 ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1494 NULL);
1495
1496 devm_kfree(ice_hw_to_dev(hw), lldpmib);
1497
1498 return ret;
1499}
1500
1501/**
1502 * ice_aq_query_port_ets - query port ETS configuration
1503 * @pi: port information structure
1504 * @buf: pointer to buffer
1505 * @buf_size: buffer size in bytes
1506 * @cd: pointer to command details structure or NULL
1507 *
1508 * query current port ETS configuration
1509 */
1510static int
1511ice_aq_query_port_ets(struct ice_port_info *pi,
1512 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1513 struct ice_sq_cd *cd)
1514{
1515 struct ice_aqc_query_port_ets *cmd;
1516 struct ice_aq_desc desc;
1517 int status;
1518
1519 if (!pi)
1520 return -EINVAL;
1521 cmd = &desc.params.port_ets;
1522 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1523 cmd->port_teid = pi->root->info.node_teid;
1524
1525 status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1526 return status;
1527}
1528
1529/**
1530 * ice_update_port_tc_tree_cfg - update TC tree configuration
1531 * @pi: port information structure
1532 * @buf: pointer to buffer
1533 *
1534 * update the SW DB with the new TC changes
1535 */
1536static int
1537ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1538 struct ice_aqc_port_ets_elem *buf)
1539{
1540 struct ice_sched_node *node, *tc_node;
1541 struct ice_aqc_txsched_elem_data elem;
1542 u32 teid1, teid2;
1543 int status = 0;
1544 u8 i, j;
1545
1546 if (!pi)
1547 return -EINVAL;
1548 /* suspend the missing TC nodes */
1549 for (i = 0; i < pi->root->num_children; i++) {
1550 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1551 ice_for_each_traffic_class(j) {
1552 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1553 if (teid1 == teid2)
1554 break;
1555 }
1556 if (j < ICE_MAX_TRAFFIC_CLASS)
1557 continue;
1558 /* TC is missing */
1559 pi->root->children[i]->in_use = false;
1560 }
1561 /* add the new TC nodes */
1562 ice_for_each_traffic_class(j) {
1563 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1564 if (teid2 == ICE_INVAL_TEID)
1565 continue;
1566 /* Is it already present in the tree ? */
1567 for (i = 0; i < pi->root->num_children; i++) {
1568 tc_node = pi->root->children[i];
1569 if (!tc_node)
1570 continue;
1571 teid1 = le32_to_cpu(tc_node->info.node_teid);
1572 if (teid1 == teid2) {
1573 tc_node->tc_num = j;
1574 tc_node->in_use = true;
1575 break;
1576 }
1577 }
1578 if (i < pi->root->num_children)
1579 continue;
1580 /* new TC */
1581 status = ice_sched_query_elem(pi->hw, teid2, &elem);
1582 if (!status)
1583 status = ice_sched_add_node(pi, 1, &elem, NULL);
1584 if (status)
1585 break;
1586 /* update the TC number */
1587 node = ice_sched_find_node_by_teid(pi->root, teid2);
1588 if (node)
1589 node->tc_num = j;
1590 }
1591 return status;
1592}
1593
1594/**
1595 * ice_query_port_ets - query port ETS configuration
1596 * @pi: port information structure
1597 * @buf: pointer to buffer
1598 * @buf_size: buffer size in bytes
1599 * @cd: pointer to command details structure or NULL
1600 *
1601 * query current port ETS configuration and update the
1602 * SW DB with the TC changes
1603 */
1604int
1605ice_query_port_ets(struct ice_port_info *pi,
1606 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1607 struct ice_sq_cd *cd)
1608{
1609 int status;
1610
1611 mutex_lock(&pi->sched_lock);
1612 status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1613 if (!status)
1614 status = ice_update_port_tc_tree_cfg(pi, buf);
1615 mutex_unlock(&pi->sched_lock);
1616 return status;
1617}