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
ice_aq_get_lldp_mib(struct ice_hw * hw,u8 bridge_type,u8 mib_type,void * buf,u16 buf_size,u16 * local_len,u16 * remote_len,struct ice_sq_cd * cd)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
ice_aq_cfg_lldp_mib_change(struct ice_hw * hw,bool ena_update,struct ice_sq_cd * cd)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
ice_aq_stop_lldp(struct ice_hw * hw,bool shutdown_lldp_agent,bool persist,struct ice_sq_cd * cd)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
ice_aq_start_lldp(struct ice_hw * hw,bool persist,struct ice_sq_cd * cd)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 */
ice_get_dcbx_status(struct ice_hw * hw)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
ice_parse_ieee_ets_common_tlv(u8 * buf,struct ice_dcb_ets_cfg * ets_cfg)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
ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_ieee_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_cee_app_tlv(struct ice_cee_feat_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_cee_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_parse_org_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)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
ice_lldp_to_dcb_cfg(u8 * lldpmib,struct ice_dcbx_cfg * dcbcfg)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
ice_aq_get_dcb_cfg(struct ice_hw * hw,u8 mib_type,u8 bridgetype,struct ice_dcbx_cfg * dcbcfg)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
ice_aq_start_stop_dcbx(struct ice_hw * hw,bool start_dcbx_agent,bool * dcbx_agent_status,struct ice_sq_cd * cd)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
ice_aq_get_cee_dcb_cfg(struct ice_hw * hw,struct ice_aqc_get_cee_dcb_cfg_resp * buff,struct ice_sq_cd * cd)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 * @pi: port information structure
742 *
743 * Convert CEE configuration from firmware to DCB configuration
744 */
745 static void
ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp * cee_cfg,struct ice_port_info * pi)746 ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
747 struct ice_port_info *pi)
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, j;
751 u8 i, err, sync, oper, app_index, ice_app_sel_type;
752 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
753 u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
754 struct ice_dcbx_cfg *cmp_dcbcfg, *dcbcfg;
755 u16 ice_app_prot_id_type;
756
757 dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
758 dcbcfg->dcbx_mode = ICE_DCBX_MODE_CEE;
759 dcbcfg->tlv_status = tlv_status;
760
761 /* CEE PG data */
762 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
763
764 /* Note that the FW creates the oper_prio_tc nibbles reversed
765 * from those in the CEE Priority Group sub-TLV.
766 */
767 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
768 dcbcfg->etscfg.prio_table[i * 2] =
769 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
770 ICE_CEE_PGID_PRIO_0_S);
771 dcbcfg->etscfg.prio_table[i * 2 + 1] =
772 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
773 ICE_CEE_PGID_PRIO_1_S);
774 }
775
776 ice_for_each_traffic_class(i) {
777 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
778
779 if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
780 /* Map it to next empty TC */
781 dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
782 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
783 } else {
784 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
785 }
786 }
787
788 /* CEE PFC data */
789 dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
790 dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
791
792 /* CEE APP TLV data */
793 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
794 cmp_dcbcfg = &pi->qos_cfg.desired_dcbx_cfg;
795 else
796 cmp_dcbcfg = &pi->qos_cfg.remote_dcbx_cfg;
797
798 app_index = 0;
799 for (i = 0; i < 3; i++) {
800 if (i == 0) {
801 /* FCoE APP */
802 ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
803 ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
804 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
805 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
806 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
807 ice_app_prot_id_type = ETH_P_FCOE;
808 } else if (i == 1) {
809 /* iSCSI APP */
810 ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
811 ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
812 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
813 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
814 ice_app_sel_type = ICE_APP_SEL_TCPIP;
815 ice_app_prot_id_type = ISCSI_LISTEN_PORT;
816
817 for (j = 0; j < cmp_dcbcfg->numapps; j++) {
818 u16 prot_id = cmp_dcbcfg->app[j].prot_id;
819 u8 sel = cmp_dcbcfg->app[j].selector;
820
821 if (sel == ICE_APP_SEL_TCPIP &&
822 (prot_id == ISCSI_LISTEN_PORT ||
823 prot_id == ICE_APP_PROT_ID_ISCSI_860)) {
824 ice_app_prot_id_type = prot_id;
825 break;
826 }
827 }
828 } else {
829 /* FIP APP */
830 ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
831 ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
832 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
833 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
834 ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
835 ice_app_prot_id_type = ETH_P_FIP;
836 }
837
838 status = (tlv_status & ice_aqc_cee_status_mask) >>
839 ice_aqc_cee_status_shift;
840 err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
841 sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
842 oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
843 /* Add FCoE/iSCSI/FIP APP if Error is False and
844 * Oper/Sync is True
845 */
846 if (!err && sync && oper) {
847 dcbcfg->app[app_index].priority =
848 (app_prio & ice_aqc_cee_app_mask) >>
849 ice_aqc_cee_app_shift;
850 dcbcfg->app[app_index].selector = ice_app_sel_type;
851 dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
852 app_index++;
853 }
854 }
855
856 dcbcfg->numapps = app_index;
857 }
858
859 /**
860 * ice_get_ieee_or_cee_dcb_cfg
861 * @pi: port information structure
862 * @dcbx_mode: mode of DCBX (IEEE or CEE)
863 *
864 * Get IEEE or CEE mode DCB configuration from the Firmware
865 */
866 static enum ice_status
ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info * pi,u8 dcbx_mode)867 ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
868 {
869 struct ice_dcbx_cfg *dcbx_cfg = NULL;
870 enum ice_status ret;
871
872 if (!pi)
873 return ICE_ERR_PARAM;
874
875 if (dcbx_mode == ICE_DCBX_MODE_IEEE)
876 dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
877 else if (dcbx_mode == ICE_DCBX_MODE_CEE)
878 dcbx_cfg = &pi->qos_cfg.desired_dcbx_cfg;
879
880 /* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
881 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
882 */
883 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
884 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
885 if (ret)
886 goto out;
887
888 /* Get Remote DCB Config */
889 dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg;
890 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
891 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
892 /* Don't treat ENOENT as an error for Remote MIBs */
893 if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
894 ret = 0;
895
896 out:
897 return ret;
898 }
899
900 /**
901 * ice_get_dcb_cfg
902 * @pi: port information structure
903 *
904 * Get DCB configuration from the Firmware
905 */
ice_get_dcb_cfg(struct ice_port_info * pi)906 enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
907 {
908 struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
909 struct ice_dcbx_cfg *dcbx_cfg;
910 enum ice_status ret;
911
912 if (!pi)
913 return ICE_ERR_PARAM;
914
915 ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
916 if (!ret) {
917 /* CEE mode */
918 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
919 ice_cee_to_dcb_cfg(&cee_cfg, pi);
920 } else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
921 /* CEE mode not enabled try querying IEEE data */
922 dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
923 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
924 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
925 }
926
927 return ret;
928 }
929
930 /**
931 * ice_init_dcb
932 * @hw: pointer to the HW struct
933 * @enable_mib_change: enable MIB change event
934 *
935 * Update DCB configuration from the Firmware
936 */
ice_init_dcb(struct ice_hw * hw,bool enable_mib_change)937 enum ice_status ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
938 {
939 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
940 enum ice_status ret = 0;
941
942 if (!hw->func_caps.common_cap.dcb)
943 return ICE_ERR_NOT_SUPPORTED;
944
945 qos_cfg->is_sw_lldp = true;
946
947 /* Get DCBX status */
948 qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
949
950 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DONE ||
951 qos_cfg->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
952 qos_cfg->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
953 /* Get current DCBX configuration */
954 ret = ice_get_dcb_cfg(hw->port_info);
955 if (ret)
956 return ret;
957 qos_cfg->is_sw_lldp = false;
958 } else if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) {
959 return ICE_ERR_NOT_READY;
960 }
961
962 /* Configure the LLDP MIB change event */
963 if (enable_mib_change) {
964 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
965 if (ret)
966 qos_cfg->is_sw_lldp = true;
967 }
968
969 return ret;
970 }
971
972 /**
973 * ice_cfg_lldp_mib_change
974 * @hw: pointer to the HW struct
975 * @ena_mib: enable/disable MIB change event
976 *
977 * Configure (disable/enable) MIB
978 */
ice_cfg_lldp_mib_change(struct ice_hw * hw,bool ena_mib)979 enum ice_status ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
980 {
981 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
982 enum ice_status ret;
983
984 if (!hw->func_caps.common_cap.dcb)
985 return ICE_ERR_NOT_SUPPORTED;
986
987 /* Get DCBX status */
988 qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
989
990 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS)
991 return ICE_ERR_NOT_READY;
992
993 ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
994 if (!ret)
995 qos_cfg->is_sw_lldp = !ena_mib;
996
997 return ret;
998 }
999
1000 /**
1001 * ice_add_ieee_ets_common_tlv
1002 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
1003 * @ets_cfg: Container for ice_dcb_ets_cfg data
1004 *
1005 * Populate the TLV buffer with ice_dcb_ets_cfg data
1006 */
1007 static void
ice_add_ieee_ets_common_tlv(u8 * buf,struct ice_dcb_ets_cfg * ets_cfg)1008 ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
1009 {
1010 u8 priority0, priority1;
1011 u8 offset = 0;
1012 int i;
1013
1014 /* Priority Assignment Table (4 octets)
1015 * Octets:| 1 | 2 | 3 | 4 |
1016 * -----------------------------------------
1017 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1018 * -----------------------------------------
1019 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0|
1020 * -----------------------------------------
1021 */
1022 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
1023 priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1024 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1025 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1026 offset++;
1027 }
1028
1029 /* TC Bandwidth Table (8 octets)
1030 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1031 * ---------------------------------
1032 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1033 * ---------------------------------
1034 *
1035 * TSA Assignment Table (8 octets)
1036 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1037 * ---------------------------------
1038 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1039 * ---------------------------------
1040 */
1041 ice_for_each_traffic_class(i) {
1042 buf[offset] = ets_cfg->tcbwtable[i];
1043 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1044 offset++;
1045 }
1046 }
1047
1048 /**
1049 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1050 * @tlv: Fill the ETS config data in IEEE format
1051 * @dcbcfg: Local store which holds the DCB Config
1052 *
1053 * Prepare IEEE 802.1Qaz ETS CFG TLV
1054 */
1055 static void
ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)1056 ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1057 {
1058 struct ice_dcb_ets_cfg *etscfg;
1059 u8 *buf = tlv->tlvinfo;
1060 u8 maxtcwilling = 0;
1061 u32 ouisubtype;
1062 u16 typelen;
1063
1064 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1065 ICE_IEEE_ETS_TLV_LEN);
1066 tlv->typelen = htons(typelen);
1067
1068 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1069 ICE_IEEE_SUBTYPE_ETS_CFG);
1070 tlv->ouisubtype = htonl(ouisubtype);
1071
1072 /* First Octet post subtype
1073 * --------------------------
1074 * |will-|CBS | Re- | Max |
1075 * |ing | |served| TCs |
1076 * --------------------------
1077 * |1bit | 1bit|3 bits|3bits|
1078 */
1079 etscfg = &dcbcfg->etscfg;
1080 if (etscfg->willing)
1081 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1082 maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1083 buf[0] = maxtcwilling;
1084
1085 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1086 ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1087 }
1088
1089 /**
1090 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1091 * @tlv: Fill ETS Recommended TLV in IEEE format
1092 * @dcbcfg: Local store which holds the DCB Config
1093 *
1094 * Prepare IEEE 802.1Qaz ETS REC TLV
1095 */
1096 static void
ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)1097 ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1098 struct ice_dcbx_cfg *dcbcfg)
1099 {
1100 struct ice_dcb_ets_cfg *etsrec;
1101 u8 *buf = tlv->tlvinfo;
1102 u32 ouisubtype;
1103 u16 typelen;
1104
1105 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1106 ICE_IEEE_ETS_TLV_LEN);
1107 tlv->typelen = htons(typelen);
1108
1109 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1110 ICE_IEEE_SUBTYPE_ETS_REC);
1111 tlv->ouisubtype = htonl(ouisubtype);
1112
1113 etsrec = &dcbcfg->etsrec;
1114
1115 /* First Octet is reserved */
1116 /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1117 ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1118 }
1119
1120 /**
1121 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1122 * @tlv: Fill PFC TLV in IEEE format
1123 * @dcbcfg: Local store which holds the PFC CFG data
1124 *
1125 * Prepare IEEE 802.1Qaz PFC CFG TLV
1126 */
1127 static void
ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)1128 ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1129 {
1130 u8 *buf = tlv->tlvinfo;
1131 u32 ouisubtype;
1132 u16 typelen;
1133
1134 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1135 ICE_IEEE_PFC_TLV_LEN);
1136 tlv->typelen = htons(typelen);
1137
1138 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1139 ICE_IEEE_SUBTYPE_PFC_CFG);
1140 tlv->ouisubtype = htonl(ouisubtype);
1141
1142 /* ----------------------------------------
1143 * |will-|MBC | Re- | PFC | PFC Enable |
1144 * |ing | |served| cap | |
1145 * -----------------------------------------
1146 * |1bit | 1bit|2 bits|4bits| 1 octet |
1147 */
1148 if (dcbcfg->pfc.willing)
1149 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1150
1151 if (dcbcfg->pfc.mbc)
1152 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1153
1154 buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1155 buf[1] = dcbcfg->pfc.pfcena;
1156 }
1157
1158 /**
1159 * ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format
1160 * @tlv: Fill APP TLV in IEEE format
1161 * @dcbcfg: Local store which holds the APP CFG data
1162 *
1163 * Prepare IEEE 802.1Qaz APP CFG TLV
1164 */
1165 static void
ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg)1166 ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1167 struct ice_dcbx_cfg *dcbcfg)
1168 {
1169 u16 typelen, len, offset = 0;
1170 u8 priority, selector, i = 0;
1171 u8 *buf = tlv->tlvinfo;
1172 u32 ouisubtype;
1173
1174 /* No APP TLVs then just return */
1175 if (dcbcfg->numapps == 0)
1176 return;
1177 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1178 ICE_IEEE_SUBTYPE_APP_PRI);
1179 tlv->ouisubtype = htonl(ouisubtype);
1180
1181 /* Move offset to App Priority Table */
1182 offset++;
1183 /* Application Priority Table (3 octets)
1184 * Octets:| 1 | 2 | 3 |
1185 * -----------------------------------------
1186 * |Priority|Rsrvd| Sel | Protocol ID |
1187 * -----------------------------------------
1188 * Bits:|23 21|20 19|18 16|15 0|
1189 * -----------------------------------------
1190 */
1191 while (i < dcbcfg->numapps) {
1192 priority = dcbcfg->app[i].priority & 0x7;
1193 selector = dcbcfg->app[i].selector & 0x7;
1194 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1195 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1196 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1197 /* Move to next app */
1198 offset += 3;
1199 i++;
1200 if (i >= ICE_DCBX_MAX_APPS)
1201 break;
1202 }
1203 /* len includes size of ouisubtype + 1 reserved + 3*numapps */
1204 len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1205 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1206 tlv->typelen = htons(typelen);
1207 }
1208
1209 /**
1210 * ice_add_dcb_tlv - Add all IEEE TLVs
1211 * @tlv: Fill TLV data in IEEE format
1212 * @dcbcfg: Local store which holds the DCB Config
1213 * @tlvid: Type of IEEE TLV
1214 *
1215 * Add tlv information
1216 */
1217 static void
ice_add_dcb_tlv(struct ice_lldp_org_tlv * tlv,struct ice_dcbx_cfg * dcbcfg,u16 tlvid)1218 ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1219 u16 tlvid)
1220 {
1221 switch (tlvid) {
1222 case ICE_IEEE_TLV_ID_ETS_CFG:
1223 ice_add_ieee_ets_tlv(tlv, dcbcfg);
1224 break;
1225 case ICE_IEEE_TLV_ID_ETS_REC:
1226 ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1227 break;
1228 case ICE_IEEE_TLV_ID_PFC_CFG:
1229 ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1230 break;
1231 case ICE_IEEE_TLV_ID_APP_PRI:
1232 ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1233 break;
1234 default:
1235 break;
1236 }
1237 }
1238
1239 /**
1240 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1241 * @lldpmib: pointer to the HW struct
1242 * @miblen: length of LLDP MIB
1243 * @dcbcfg: Local store which holds the DCB Config
1244 *
1245 * Convert the DCB configuration to MIB format
1246 */
1247 static void
ice_dcb_cfg_to_lldp(u8 * lldpmib,u16 * miblen,struct ice_dcbx_cfg * dcbcfg)1248 ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1249 {
1250 u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1251 struct ice_lldp_org_tlv *tlv;
1252 u16 typelen;
1253
1254 tlv = (struct ice_lldp_org_tlv *)lldpmib;
1255 while (1) {
1256 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1257 typelen = ntohs(tlv->typelen);
1258 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
1259 if (len)
1260 offset += len + 2;
1261 /* END TLV or beyond LLDPDU size */
1262 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1263 offset > ICE_LLDPDU_SIZE)
1264 break;
1265 /* Move to next TLV */
1266 if (len)
1267 tlv = (struct ice_lldp_org_tlv *)
1268 ((char *)tlv + sizeof(tlv->typelen) + len);
1269 }
1270 *miblen = offset;
1271 }
1272
1273 /**
1274 * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1275 * @pi: port information structure
1276 *
1277 * Set DCB configuration to the Firmware
1278 */
ice_set_dcb_cfg(struct ice_port_info * pi)1279 enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi)
1280 {
1281 u8 mib_type, *lldpmib = NULL;
1282 struct ice_dcbx_cfg *dcbcfg;
1283 enum ice_status ret;
1284 struct ice_hw *hw;
1285 u16 miblen;
1286
1287 if (!pi)
1288 return ICE_ERR_PARAM;
1289
1290 hw = pi->hw;
1291
1292 /* update the HW local config */
1293 dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
1294 /* Allocate the LLDPDU */
1295 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1296 if (!lldpmib)
1297 return ICE_ERR_NO_MEMORY;
1298
1299 mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1300 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1301 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1302
1303 ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1304 ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1305 NULL);
1306
1307 devm_kfree(ice_hw_to_dev(hw), lldpmib);
1308
1309 return ret;
1310 }
1311
1312 /**
1313 * ice_aq_query_port_ets - query port ETS configuration
1314 * @pi: port information structure
1315 * @buf: pointer to buffer
1316 * @buf_size: buffer size in bytes
1317 * @cd: pointer to command details structure or NULL
1318 *
1319 * query current port ETS configuration
1320 */
1321 static enum ice_status
ice_aq_query_port_ets(struct ice_port_info * pi,struct ice_aqc_port_ets_elem * buf,u16 buf_size,struct ice_sq_cd * cd)1322 ice_aq_query_port_ets(struct ice_port_info *pi,
1323 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1324 struct ice_sq_cd *cd)
1325 {
1326 struct ice_aqc_query_port_ets *cmd;
1327 struct ice_aq_desc desc;
1328 enum ice_status status;
1329
1330 if (!pi)
1331 return ICE_ERR_PARAM;
1332 cmd = &desc.params.port_ets;
1333 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1334 cmd->port_teid = pi->root->info.node_teid;
1335
1336 status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1337 return status;
1338 }
1339
1340 /**
1341 * ice_update_port_tc_tree_cfg - update TC tree configuration
1342 * @pi: port information structure
1343 * @buf: pointer to buffer
1344 *
1345 * update the SW DB with the new TC changes
1346 */
1347 static enum ice_status
ice_update_port_tc_tree_cfg(struct ice_port_info * pi,struct ice_aqc_port_ets_elem * buf)1348 ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1349 struct ice_aqc_port_ets_elem *buf)
1350 {
1351 struct ice_sched_node *node, *tc_node;
1352 struct ice_aqc_txsched_elem_data elem;
1353 enum ice_status status = 0;
1354 u32 teid1, teid2;
1355 u8 i, j;
1356
1357 if (!pi)
1358 return ICE_ERR_PARAM;
1359 /* suspend the missing TC nodes */
1360 for (i = 0; i < pi->root->num_children; i++) {
1361 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1362 ice_for_each_traffic_class(j) {
1363 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1364 if (teid1 == teid2)
1365 break;
1366 }
1367 if (j < ICE_MAX_TRAFFIC_CLASS)
1368 continue;
1369 /* TC is missing */
1370 pi->root->children[i]->in_use = false;
1371 }
1372 /* add the new TC nodes */
1373 ice_for_each_traffic_class(j) {
1374 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1375 if (teid2 == ICE_INVAL_TEID)
1376 continue;
1377 /* Is it already present in the tree ? */
1378 for (i = 0; i < pi->root->num_children; i++) {
1379 tc_node = pi->root->children[i];
1380 if (!tc_node)
1381 continue;
1382 teid1 = le32_to_cpu(tc_node->info.node_teid);
1383 if (teid1 == teid2) {
1384 tc_node->tc_num = j;
1385 tc_node->in_use = true;
1386 break;
1387 }
1388 }
1389 if (i < pi->root->num_children)
1390 continue;
1391 /* new TC */
1392 status = ice_sched_query_elem(pi->hw, teid2, &elem);
1393 if (!status)
1394 status = ice_sched_add_node(pi, 1, &elem);
1395 if (status)
1396 break;
1397 /* update the TC number */
1398 node = ice_sched_find_node_by_teid(pi->root, teid2);
1399 if (node)
1400 node->tc_num = j;
1401 }
1402 return status;
1403 }
1404
1405 /**
1406 * ice_query_port_ets - query port ETS configuration
1407 * @pi: port information structure
1408 * @buf: pointer to buffer
1409 * @buf_size: buffer size in bytes
1410 * @cd: pointer to command details structure or NULL
1411 *
1412 * query current port ETS configuration and update the
1413 * SW DB with the TC changes
1414 */
1415 enum ice_status
ice_query_port_ets(struct ice_port_info * pi,struct ice_aqc_port_ets_elem * buf,u16 buf_size,struct ice_sq_cd * cd)1416 ice_query_port_ets(struct ice_port_info *pi,
1417 struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1418 struct ice_sq_cd *cd)
1419 {
1420 enum ice_status status;
1421
1422 mutex_lock(&pi->sched_lock);
1423 status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1424 if (!status)
1425 status = ice_update_port_tc_tree_cfg(pi, buf);
1426 mutex_unlock(&pi->sched_lock);
1427 return status;
1428 }
1429