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 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_aq_set_lldp_mib - Set the LLDP MIB
139  * @hw: pointer to the HW struct
140  * @mib_type: Local, Remote or both Local and Remote MIBs
141  * @buf: pointer to the caller-supplied buffer to store the MIB block
142  * @buf_size: size of the buffer (in bytes)
143  * @cd: pointer to command details structure or NULL
144  *
145  * Set the LLDP MIB. (0x0A08)
146  */
147 static enum ice_status
148 ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
149 		    struct ice_sq_cd *cd)
150 {
151 	struct ice_aqc_lldp_set_local_mib *cmd;
152 	struct ice_aq_desc desc;
153 
154 	cmd = &desc.params.lldp_set_mib;
155 
156 	if (buf_size == 0 || !buf)
157 		return ICE_ERR_PARAM;
158 
159 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_local_mib);
160 
161 	desc.flags |= cpu_to_le16((u16)ICE_AQ_FLAG_RD);
162 	desc.datalen = cpu_to_le16(buf_size);
163 
164 	cmd->type = mib_type;
165 	cmd->length = cpu_to_le16(buf_size);
166 
167 	return ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
168 }
169 
170 /**
171  * ice_get_dcbx_status
172  * @hw: pointer to the HW struct
173  *
174  * Get the DCBX status from the Firmware
175  */
176 static u8 ice_get_dcbx_status(struct ice_hw *hw)
177 {
178 	u32 reg;
179 
180 	reg = rd32(hw, PRTDCB_GENS);
181 	return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >>
182 		    PRTDCB_GENS_DCBX_STATUS_S);
183 }
184 
185 /**
186  * ice_parse_ieee_ets_common_tlv
187  * @buf: Data buffer to be parsed for ETS CFG/REC data
188  * @ets_cfg: Container to store parsed data
189  *
190  * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
191  */
192 static void
193 ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
194 {
195 	u8 offset = 0;
196 	int i;
197 
198 	/* Priority Assignment Table (4 octets)
199 	 * Octets:|    1    |    2    |    3    |    4    |
200 	 *        -----------------------------------------
201 	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
202 	 *        -----------------------------------------
203 	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
204 	 *        -----------------------------------------
205 	 */
206 	for (i = 0; i < 4; i++) {
207 		ets_cfg->prio_table[i * 2] =
208 			((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >>
209 			 ICE_IEEE_ETS_PRIO_1_S);
210 		ets_cfg->prio_table[i * 2 + 1] =
211 			((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >>
212 			 ICE_IEEE_ETS_PRIO_0_S);
213 		offset++;
214 	}
215 
216 	/* TC Bandwidth Table (8 octets)
217 	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
218 	 *        ---------------------------------
219 	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
220 	 *        ---------------------------------
221 	 *
222 	 * TSA Assignment Table (8 octets)
223 	 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
224 	 *        ---------------------------------
225 	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
226 	 *        ---------------------------------
227 	 */
228 	ice_for_each_traffic_class(i) {
229 		ets_cfg->tcbwtable[i] = buf[offset];
230 		ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
231 	}
232 }
233 
234 /**
235  * ice_parse_ieee_etscfg_tlv
236  * @tlv: IEEE 802.1Qaz ETS CFG TLV
237  * @dcbcfg: Local store to update ETS CFG data
238  *
239  * Parses IEEE 802.1Qaz ETS CFG TLV
240  */
241 static void
242 ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
243 			  struct ice_dcbx_cfg *dcbcfg)
244 {
245 	struct ice_dcb_ets_cfg *etscfg;
246 	u8 *buf = tlv->tlvinfo;
247 
248 	/* First Octet post subtype
249 	 * --------------------------
250 	 * |will-|CBS  | Re-  | Max |
251 	 * |ing  |     |served| TCs |
252 	 * --------------------------
253 	 * |1bit | 1bit|3 bits|3bits|
254 	 */
255 	etscfg = &dcbcfg->etscfg;
256 	etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >>
257 			   ICE_IEEE_ETS_WILLING_S);
258 	etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S);
259 	etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >>
260 			  ICE_IEEE_ETS_MAXTC_S);
261 
262 	/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
263 	ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
264 }
265 
266 /**
267  * ice_parse_ieee_etsrec_tlv
268  * @tlv: IEEE 802.1Qaz ETS REC TLV
269  * @dcbcfg: Local store to update ETS REC data
270  *
271  * Parses IEEE 802.1Qaz ETS REC TLV
272  */
273 static void
274 ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
275 			  struct ice_dcbx_cfg *dcbcfg)
276 {
277 	u8 *buf = tlv->tlvinfo;
278 
279 	/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
280 	ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
281 }
282 
283 /**
284  * ice_parse_ieee_pfccfg_tlv
285  * @tlv: IEEE 802.1Qaz PFC CFG TLV
286  * @dcbcfg: Local store to update PFC CFG data
287  *
288  * Parses IEEE 802.1Qaz PFC CFG TLV
289  */
290 static void
291 ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
292 			  struct ice_dcbx_cfg *dcbcfg)
293 {
294 	u8 *buf = tlv->tlvinfo;
295 
296 	/* ----------------------------------------
297 	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
298 	 * |ing  |     |served| cap |              |
299 	 * -----------------------------------------
300 	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
301 	 */
302 	dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >>
303 			       ICE_IEEE_PFC_WILLING_S);
304 	dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S);
305 	dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >>
306 			      ICE_IEEE_PFC_CAP_S);
307 	dcbcfg->pfc.pfcena = buf[1];
308 }
309 
310 /**
311  * ice_parse_ieee_app_tlv
312  * @tlv: IEEE 802.1Qaz APP TLV
313  * @dcbcfg: Local store to update APP PRIO data
314  *
315  * Parses IEEE 802.1Qaz APP PRIO TLV
316  */
317 static void
318 ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
319 		       struct ice_dcbx_cfg *dcbcfg)
320 {
321 	u16 offset = 0;
322 	u16 typelen;
323 	int i = 0;
324 	u16 len;
325 	u8 *buf;
326 
327 	typelen = ntohs(tlv->typelen);
328 	len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
329 	buf = tlv->tlvinfo;
330 
331 	/* Removing sizeof(ouisubtype) and reserved byte from len.
332 	 * Remaining len div 3 is number of APP TLVs.
333 	 */
334 	len -= (sizeof(tlv->ouisubtype) + 1);
335 
336 	/* Move offset to App Priority Table */
337 	offset++;
338 
339 	/* Application Priority Table (3 octets)
340 	 * Octets:|         1          |    2    |    3    |
341 	 *        -----------------------------------------
342 	 *        |Priority|Rsrvd| Sel |    Protocol ID    |
343 	 *        -----------------------------------------
344 	 *   Bits:|23    21|20 19|18 16|15                0|
345 	 *        -----------------------------------------
346 	 */
347 	while (offset < len) {
348 		dcbcfg->app[i].priority = ((buf[offset] &
349 					    ICE_IEEE_APP_PRIO_M) >>
350 					   ICE_IEEE_APP_PRIO_S);
351 		dcbcfg->app[i].selector = ((buf[offset] &
352 					    ICE_IEEE_APP_SEL_M) >>
353 					   ICE_IEEE_APP_SEL_S);
354 		dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
355 			buf[offset + 2];
356 		/* Move to next app */
357 		offset += 3;
358 		i++;
359 		if (i >= ICE_DCBX_MAX_APPS)
360 			break;
361 	}
362 
363 	dcbcfg->numapps = i;
364 }
365 
366 /**
367  * ice_parse_ieee_tlv
368  * @tlv: IEEE 802.1Qaz TLV
369  * @dcbcfg: Local store to update ETS REC data
370  *
371  * Get the TLV subtype and send it to parsing function
372  * based on the subtype value
373  */
374 static void
375 ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
376 {
377 	u32 ouisubtype;
378 	u8 subtype;
379 
380 	ouisubtype = ntohl(tlv->ouisubtype);
381 	subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
382 		       ICE_LLDP_TLV_SUBTYPE_S);
383 	switch (subtype) {
384 	case ICE_IEEE_SUBTYPE_ETS_CFG:
385 		ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
386 		break;
387 	case ICE_IEEE_SUBTYPE_ETS_REC:
388 		ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
389 		break;
390 	case ICE_IEEE_SUBTYPE_PFC_CFG:
391 		ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
392 		break;
393 	case ICE_IEEE_SUBTYPE_APP_PRI:
394 		ice_parse_ieee_app_tlv(tlv, dcbcfg);
395 		break;
396 	default:
397 		break;
398 	}
399 }
400 
401 /**
402  * ice_parse_cee_pgcfg_tlv
403  * @tlv: CEE DCBX PG CFG TLV
404  * @dcbcfg: Local store to update ETS CFG data
405  *
406  * Parses CEE DCBX PG CFG TLV
407  */
408 static void
409 ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
410 			struct ice_dcbx_cfg *dcbcfg)
411 {
412 	struct ice_dcb_ets_cfg *etscfg;
413 	u8 *buf = tlv->tlvinfo;
414 	u16 offset = 0;
415 	int i;
416 
417 	etscfg = &dcbcfg->etscfg;
418 
419 	if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
420 		etscfg->willing = 1;
421 
422 	etscfg->cbs = 0;
423 	/* Priority Group Table (4 octets)
424 	 * Octets:|    1    |    2    |    3    |    4    |
425 	 *        -----------------------------------------
426 	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
427 	 *        -----------------------------------------
428 	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
429 	 *        -----------------------------------------
430 	 */
431 	for (i = 0; i < 4; i++) {
432 		etscfg->prio_table[i * 2] =
433 			((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >>
434 			 ICE_CEE_PGID_PRIO_1_S);
435 		etscfg->prio_table[i * 2 + 1] =
436 			((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >>
437 			 ICE_CEE_PGID_PRIO_0_S);
438 		offset++;
439 	}
440 
441 	/* PG Percentage Table (8 octets)
442 	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
443 	 *        ---------------------------------
444 	 *        |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
445 	 *        ---------------------------------
446 	 */
447 	ice_for_each_traffic_class(i)
448 		etscfg->tcbwtable[i] = buf[offset++];
449 
450 	/* Number of TCs supported (1 octet) */
451 	etscfg->maxtcs = buf[offset];
452 }
453 
454 /**
455  * ice_parse_cee_pfccfg_tlv
456  * @tlv: CEE DCBX PFC CFG TLV
457  * @dcbcfg: Local store to update PFC CFG data
458  *
459  * Parses CEE DCBX PFC CFG TLV
460  */
461 static void
462 ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
463 			 struct ice_dcbx_cfg *dcbcfg)
464 {
465 	u8 *buf = tlv->tlvinfo;
466 
467 	if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
468 		dcbcfg->pfc.willing = 1;
469 
470 	/* ------------------------
471 	 * | PFC Enable | PFC TCs |
472 	 * ------------------------
473 	 * | 1 octet    | 1 octet |
474 	 */
475 	dcbcfg->pfc.pfcena = buf[0];
476 	dcbcfg->pfc.pfccap = buf[1];
477 }
478 
479 /**
480  * ice_parse_cee_app_tlv
481  * @tlv: CEE DCBX APP TLV
482  * @dcbcfg: Local store to update APP PRIO data
483  *
484  * Parses CEE DCBX APP PRIO TLV
485  */
486 static void
487 ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
488 {
489 	u16 len, typelen, offset = 0;
490 	struct ice_cee_app_prio *app;
491 	u8 i;
492 
493 	typelen = ntohs(tlv->hdr.typelen);
494 	len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
495 
496 	dcbcfg->numapps = len / sizeof(*app);
497 	if (!dcbcfg->numapps)
498 		return;
499 	if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
500 		dcbcfg->numapps = ICE_DCBX_MAX_APPS;
501 
502 	for (i = 0; i < dcbcfg->numapps; i++) {
503 		u8 up, selector;
504 
505 		app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
506 		for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
507 			if (app->prio_map & BIT(up))
508 				break;
509 
510 		dcbcfg->app[i].priority = up;
511 
512 		/* Get Selector from lower 2 bits, and convert to IEEE */
513 		selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
514 		switch (selector) {
515 		case ICE_CEE_APP_SEL_ETHTYPE:
516 			dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
517 			break;
518 		case ICE_CEE_APP_SEL_TCPIP:
519 			dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
520 			break;
521 		default:
522 			/* Keep selector as it is for unknown types */
523 			dcbcfg->app[i].selector = selector;
524 		}
525 
526 		dcbcfg->app[i].prot_id = ntohs(app->protocol);
527 		/* Move to next app */
528 		offset += sizeof(*app);
529 	}
530 }
531 
532 /**
533  * ice_parse_cee_tlv
534  * @tlv: CEE DCBX TLV
535  * @dcbcfg: Local store to update DCBX config data
536  *
537  * Get the TLV subtype and send it to parsing function
538  * based on the subtype value
539  */
540 static void
541 ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
542 {
543 	struct ice_cee_feat_tlv *sub_tlv;
544 	u8 subtype, feat_tlv_count = 0;
545 	u16 len, tlvlen, typelen;
546 	u32 ouisubtype;
547 
548 	ouisubtype = ntohl(tlv->ouisubtype);
549 	subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
550 		       ICE_LLDP_TLV_SUBTYPE_S);
551 	/* Return if not CEE DCBX */
552 	if (subtype != ICE_CEE_DCBX_TYPE)
553 		return;
554 
555 	typelen = ntohs(tlv->typelen);
556 	tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
557 	len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
558 		sizeof(struct ice_cee_ctrl_tlv);
559 	/* Return if no CEE DCBX Feature TLVs */
560 	if (tlvlen <= len)
561 		return;
562 
563 	sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
564 	while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
565 		u16 sublen;
566 
567 		typelen = ntohs(sub_tlv->hdr.typelen);
568 		sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
569 		subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >>
570 			       ICE_LLDP_TLV_TYPE_S);
571 		switch (subtype) {
572 		case ICE_CEE_SUBTYPE_PG_CFG:
573 			ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
574 			break;
575 		case ICE_CEE_SUBTYPE_PFC_CFG:
576 			ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
577 			break;
578 		case ICE_CEE_SUBTYPE_APP_PRI:
579 			ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
580 			break;
581 		default:
582 			return;	/* Invalid Sub-type return */
583 		}
584 		feat_tlv_count++;
585 		/* Move to next sub TLV */
586 		sub_tlv = (struct ice_cee_feat_tlv *)
587 			  ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
588 			   sublen);
589 	}
590 }
591 
592 /**
593  * ice_parse_org_tlv
594  * @tlv: Organization specific TLV
595  * @dcbcfg: Local store to update ETS REC data
596  *
597  * Currently only IEEE 802.1Qaz TLV is supported, all others
598  * will be returned
599  */
600 static void
601 ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
602 {
603 	u32 ouisubtype;
604 	u32 oui;
605 
606 	ouisubtype = ntohl(tlv->ouisubtype);
607 	oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S);
608 	switch (oui) {
609 	case ICE_IEEE_8021QAZ_OUI:
610 		ice_parse_ieee_tlv(tlv, dcbcfg);
611 		break;
612 	case ICE_CEE_DCBX_OUI:
613 		ice_parse_cee_tlv(tlv, dcbcfg);
614 		break;
615 	default:
616 		break;
617 	}
618 }
619 
620 /**
621  * ice_lldp_to_dcb_cfg
622  * @lldpmib: LLDPDU to be parsed
623  * @dcbcfg: store for LLDPDU data
624  *
625  * Parse DCB configuration from the LLDPDU
626  */
627 static enum ice_status
628 ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
629 {
630 	struct ice_lldp_org_tlv *tlv;
631 	enum ice_status ret = 0;
632 	u16 offset = 0;
633 	u16 typelen;
634 	u16 type;
635 	u16 len;
636 
637 	if (!lldpmib || !dcbcfg)
638 		return ICE_ERR_PARAM;
639 
640 	/* set to the start of LLDPDU */
641 	lldpmib += ETH_HLEN;
642 	tlv = (struct ice_lldp_org_tlv *)lldpmib;
643 	while (1) {
644 		typelen = ntohs(tlv->typelen);
645 		type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S);
646 		len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
647 		offset += sizeof(typelen) + len;
648 
649 		/* END TLV or beyond LLDPDU size */
650 		if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
651 			break;
652 
653 		switch (type) {
654 		case ICE_TLV_TYPE_ORG:
655 			ice_parse_org_tlv(tlv, dcbcfg);
656 			break;
657 		default:
658 			break;
659 		}
660 
661 		/* Move to next TLV */
662 		tlv = (struct ice_lldp_org_tlv *)
663 		      ((char *)tlv + sizeof(tlv->typelen) + len);
664 	}
665 
666 	return ret;
667 }
668 
669 /**
670  * ice_aq_get_dcb_cfg
671  * @hw: pointer to the HW struct
672  * @mib_type: MIB type for the query
673  * @bridgetype: bridge type for the query (remote)
674  * @dcbcfg: store for LLDPDU data
675  *
676  * Query DCB configuration from the firmware
677  */
678 enum ice_status
679 ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
680 		   struct ice_dcbx_cfg *dcbcfg)
681 {
682 	enum ice_status ret;
683 	u8 *lldpmib;
684 
685 	/* Allocate the LLDPDU */
686 	lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
687 	if (!lldpmib)
688 		return ICE_ERR_NO_MEMORY;
689 
690 	ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
691 				  ICE_LLDPDU_SIZE, NULL, NULL, NULL);
692 
693 	if (!ret)
694 		/* Parse LLDP MIB to get DCB configuration */
695 		ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
696 
697 	devm_kfree(ice_hw_to_dev(hw), lldpmib);
698 
699 	return ret;
700 }
701 
702 /**
703  * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
704  * @hw: pointer to the HW struct
705  * @start_dcbx_agent: True if DCBX Agent needs to be started
706  *		      False if DCBX Agent needs to be stopped
707  * @dcbx_agent_status: FW indicates back the DCBX agent status
708  *		       True if DCBX Agent is active
709  *		       False if DCBX Agent is stopped
710  * @cd: pointer to command details structure or NULL
711  *
712  * Start/Stop the embedded dcbx Agent. In case that this wrapper function
713  * returns ICE_SUCCESS, caller will need to check if FW returns back the same
714  * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
715  */
716 enum ice_status
717 ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
718 		       bool *dcbx_agent_status, struct ice_sq_cd *cd)
719 {
720 	struct ice_aqc_lldp_stop_start_specific_agent *cmd;
721 	enum ice_status status;
722 	struct ice_aq_desc desc;
723 	u16 opcode;
724 
725 	cmd = &desc.params.lldp_agent_ctrl;
726 
727 	opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
728 
729 	ice_fill_dflt_direct_cmd_desc(&desc, opcode);
730 
731 	if (start_dcbx_agent)
732 		cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
733 
734 	status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
735 
736 	*dcbx_agent_status = false;
737 
738 	if (!status &&
739 	    cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
740 		*dcbx_agent_status = true;
741 
742 	return status;
743 }
744 
745 /**
746  * ice_aq_get_cee_dcb_cfg
747  * @hw: pointer to the HW struct
748  * @buff: response buffer that stores CEE operational configuration
749  * @cd: pointer to command details structure or NULL
750  *
751  * Get CEE DCBX mode operational configuration from firmware (0x0A07)
752  */
753 static enum ice_status
754 ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
755 		       struct ice_aqc_get_cee_dcb_cfg_resp *buff,
756 		       struct ice_sq_cd *cd)
757 {
758 	struct ice_aq_desc desc;
759 
760 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
761 
762 	return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
763 }
764 
765 /**
766  * ice_cee_to_dcb_cfg
767  * @cee_cfg: pointer to CEE configuration struct
768  * @dcbcfg: DCB configuration struct
769  *
770  * Convert CEE configuration from firmware to DCB configuration
771  */
772 static void
773 ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
774 		   struct ice_dcbx_cfg *dcbcfg)
775 {
776 	u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
777 	u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift;
778 	u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
779 	u8 i, err, sync, oper, app_index, ice_app_sel_type;
780 	u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
781 	u16 ice_app_prot_id_type;
782 
783 	/* CEE PG data to ETS config */
784 	dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
785 
786 	/* Note that the FW creates the oper_prio_tc nibbles reversed
787 	 * from those in the CEE Priority Group sub-TLV.
788 	 */
789 	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
790 		dcbcfg->etscfg.prio_table[i * 2] =
791 			((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
792 			 ICE_CEE_PGID_PRIO_0_S);
793 		dcbcfg->etscfg.prio_table[i * 2 + 1] =
794 			((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
795 			 ICE_CEE_PGID_PRIO_1_S);
796 	}
797 
798 	ice_for_each_traffic_class(i) {
799 		dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
800 
801 		if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
802 			/* Map it to next empty TC */
803 			dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
804 			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
805 		} else {
806 			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
807 		}
808 	}
809 
810 	/* CEE PFC data to ETS config */
811 	dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
812 	dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
813 
814 	app_index = 0;
815 	for (i = 0; i < 3; i++) {
816 		if (i == 0) {
817 			/* FCoE APP */
818 			ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
819 			ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
820 			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
821 			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
822 			ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
823 			ice_app_prot_id_type = ICE_APP_PROT_ID_FCOE;
824 		} else if (i == 1) {
825 			/* iSCSI APP */
826 			ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
827 			ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
828 			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
829 			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
830 			ice_app_sel_type = ICE_APP_SEL_TCPIP;
831 			ice_app_prot_id_type = ICE_APP_PROT_ID_ISCSI;
832 		} else {
833 			/* FIP APP */
834 			ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
835 			ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
836 			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
837 			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
838 			ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
839 			ice_app_prot_id_type = ICE_APP_PROT_ID_FIP;
840 		}
841 
842 		status = (tlv_status & ice_aqc_cee_status_mask) >>
843 			 ice_aqc_cee_status_shift;
844 		err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
845 		sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
846 		oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
847 		/* Add FCoE/iSCSI/FIP APP if Error is False and
848 		 * Oper/Sync is True
849 		 */
850 		if (!err && sync && oper) {
851 			dcbcfg->app[app_index].priority =
852 				(app_prio & ice_aqc_cee_app_mask) >>
853 				ice_aqc_cee_app_shift;
854 			dcbcfg->app[app_index].selector = ice_app_sel_type;
855 			dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
856 			app_index++;
857 		}
858 	}
859 
860 	dcbcfg->numapps = app_index;
861 }
862 
863 /**
864  * ice_get_ieee_dcb_cfg
865  * @pi: port information structure
866  * @dcbx_mode: mode of DCBX (IEEE or CEE)
867  *
868  * Get IEEE or CEE mode DCB configuration from the Firmware
869  */
870 static enum ice_status
871 ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
872 {
873 	struct ice_dcbx_cfg *dcbx_cfg = NULL;
874 	enum ice_status ret;
875 
876 	if (!pi)
877 		return ICE_ERR_PARAM;
878 
879 	if (dcbx_mode == ICE_DCBX_MODE_IEEE)
880 		dcbx_cfg = &pi->local_dcbx_cfg;
881 	else if (dcbx_mode == ICE_DCBX_MODE_CEE)
882 		dcbx_cfg = &pi->desired_dcbx_cfg;
883 
884 	/* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
885 	 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
886 	 */
887 	ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
888 				 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
889 	if (ret)
890 		goto out;
891 
892 	/* Get Remote DCB Config */
893 	dcbx_cfg = &pi->remote_dcbx_cfg;
894 	ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
895 				 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
896 	/* Don't treat ENOENT as an error for Remote MIBs */
897 	if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
898 		ret = 0;
899 
900 out:
901 	return ret;
902 }
903 
904 /**
905  * ice_get_dcb_cfg
906  * @pi: port information structure
907  *
908  * Get DCB configuration from the Firmware
909  */
910 enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
911 {
912 	struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
913 	struct ice_dcbx_cfg *dcbx_cfg;
914 	enum ice_status ret;
915 
916 	if (!pi)
917 		return ICE_ERR_PARAM;
918 
919 	ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
920 	if (!ret) {
921 		/* CEE mode */
922 		dcbx_cfg = &pi->local_dcbx_cfg;
923 		dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_CEE;
924 		dcbx_cfg->tlv_status = le32_to_cpu(cee_cfg.tlv_status);
925 		ice_cee_to_dcb_cfg(&cee_cfg, dcbx_cfg);
926 		ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
927 	} else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
928 		/* CEE mode not enabled try querying IEEE data */
929 		dcbx_cfg = &pi->local_dcbx_cfg;
930 		dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
931 		ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
932 	}
933 
934 	return ret;
935 }
936 
937 /**
938  * ice_init_dcb
939  * @hw: pointer to the HW struct
940  *
941  * Update DCB configuration from the Firmware
942  */
943 enum ice_status ice_init_dcb(struct ice_hw *hw)
944 {
945 	struct ice_port_info *pi = hw->port_info;
946 	enum ice_status ret = 0;
947 
948 	if (!hw->func_caps.common_cap.dcb)
949 		return ICE_ERR_NOT_SUPPORTED;
950 
951 	pi->is_sw_lldp = true;
952 
953 	/* Get DCBX status */
954 	pi->dcbx_status = ice_get_dcbx_status(hw);
955 
956 	if (pi->dcbx_status == ICE_DCBX_STATUS_DONE ||
957 	    pi->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
958 	    pi->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
959 		/* Get current DCBX configuration */
960 		ret = ice_get_dcb_cfg(pi);
961 		pi->is_sw_lldp = (hw->adminq.sq_last_status == ICE_AQ_RC_EPERM);
962 		if (ret)
963 			return ret;
964 	} else if (pi->dcbx_status == ICE_DCBX_STATUS_DIS) {
965 		return ICE_ERR_NOT_READY;
966 	}
967 
968 	/* Configure the LLDP MIB change event */
969 	ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
970 	if (!ret)
971 		pi->is_sw_lldp = false;
972 
973 	return ret;
974 }
975 
976 /**
977  * ice_add_ieee_ets_common_tlv
978  * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
979  * @ets_cfg: Container for ice_dcb_ets_cfg data
980  *
981  * Populate the TLV buffer with ice_dcb_ets_cfg data
982  */
983 static void
984 ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
985 {
986 	u8 priority0, priority1;
987 	u8 offset = 0;
988 	int i;
989 
990 	/* Priority Assignment Table (4 octets)
991 	 * Octets:|    1    |    2    |    3    |    4    |
992 	 *        -----------------------------------------
993 	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
994 	 *        -----------------------------------------
995 	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
996 	 *        -----------------------------------------
997 	 */
998 	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
999 		priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1000 		priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1001 		buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1002 		offset++;
1003 	}
1004 
1005 	/* TC Bandwidth Table (8 octets)
1006 	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1007 	 *        ---------------------------------
1008 	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1009 	 *        ---------------------------------
1010 	 *
1011 	 * TSA Assignment Table (8 octets)
1012 	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1013 	 *        ---------------------------------
1014 	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1015 	 *        ---------------------------------
1016 	 */
1017 	ice_for_each_traffic_class(i) {
1018 		buf[offset] = ets_cfg->tcbwtable[i];
1019 		buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1020 		offset++;
1021 	}
1022 }
1023 
1024 /**
1025  * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1026  * @tlv: Fill the ETS config data in IEEE format
1027  * @dcbcfg: Local store which holds the DCB Config
1028  *
1029  * Prepare IEEE 802.1Qaz ETS CFG TLV
1030  */
1031 static void
1032 ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1033 {
1034 	struct ice_dcb_ets_cfg *etscfg;
1035 	u8 *buf = tlv->tlvinfo;
1036 	u8 maxtcwilling = 0;
1037 	u32 ouisubtype;
1038 	u16 typelen;
1039 
1040 	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1041 		   ICE_IEEE_ETS_TLV_LEN);
1042 	tlv->typelen = htons(typelen);
1043 
1044 	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1045 		      ICE_IEEE_SUBTYPE_ETS_CFG);
1046 	tlv->ouisubtype = htonl(ouisubtype);
1047 
1048 	/* First Octet post subtype
1049 	 * --------------------------
1050 	 * |will-|CBS  | Re-  | Max |
1051 	 * |ing  |     |served| TCs |
1052 	 * --------------------------
1053 	 * |1bit | 1bit|3 bits|3bits|
1054 	 */
1055 	etscfg = &dcbcfg->etscfg;
1056 	if (etscfg->willing)
1057 		maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1058 	maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1059 	buf[0] = maxtcwilling;
1060 
1061 	/* Begin adding at Priority Assignment Table (offset 1 in buf) */
1062 	ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1063 }
1064 
1065 /**
1066  * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1067  * @tlv: Fill ETS Recommended TLV in IEEE format
1068  * @dcbcfg: Local store which holds the DCB Config
1069  *
1070  * Prepare IEEE 802.1Qaz ETS REC TLV
1071  */
1072 static void
1073 ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1074 			struct ice_dcbx_cfg *dcbcfg)
1075 {
1076 	struct ice_dcb_ets_cfg *etsrec;
1077 	u8 *buf = tlv->tlvinfo;
1078 	u32 ouisubtype;
1079 	u16 typelen;
1080 
1081 	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1082 		   ICE_IEEE_ETS_TLV_LEN);
1083 	tlv->typelen = htons(typelen);
1084 
1085 	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1086 		      ICE_IEEE_SUBTYPE_ETS_REC);
1087 	tlv->ouisubtype = htonl(ouisubtype);
1088 
1089 	etsrec = &dcbcfg->etsrec;
1090 
1091 	/* First Octet is reserved */
1092 	/* Begin adding at Priority Assignment Table (offset 1 in buf) */
1093 	ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1094 }
1095 
1096 /**
1097  * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1098  * @tlv: Fill PFC TLV in IEEE format
1099  * @dcbcfg: Local store which holds the PFC CFG data
1100  *
1101  * Prepare IEEE 802.1Qaz PFC CFG TLV
1102  */
1103 static void
1104 ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1105 {
1106 	u8 *buf = tlv->tlvinfo;
1107 	u32 ouisubtype;
1108 	u16 typelen;
1109 
1110 	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1111 		   ICE_IEEE_PFC_TLV_LEN);
1112 	tlv->typelen = htons(typelen);
1113 
1114 	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1115 		      ICE_IEEE_SUBTYPE_PFC_CFG);
1116 	tlv->ouisubtype = htonl(ouisubtype);
1117 
1118 	/* ----------------------------------------
1119 	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
1120 	 * |ing  |     |served| cap |              |
1121 	 * -----------------------------------------
1122 	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
1123 	 */
1124 	if (dcbcfg->pfc.willing)
1125 		buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1126 
1127 	if (dcbcfg->pfc.mbc)
1128 		buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1129 
1130 	buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1131 	buf[1] = dcbcfg->pfc.pfcena;
1132 }
1133 
1134 /**
1135  * ice_add_ieee_app_pri_tlv -  Prepare APP TLV in IEEE format
1136  * @tlv: Fill APP TLV in IEEE format
1137  * @dcbcfg: Local store which holds the APP CFG data
1138  *
1139  * Prepare IEEE 802.1Qaz APP CFG TLV
1140  */
1141 static void
1142 ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1143 			 struct ice_dcbx_cfg *dcbcfg)
1144 {
1145 	u16 typelen, len, offset = 0;
1146 	u8 priority, selector, i = 0;
1147 	u8 *buf = tlv->tlvinfo;
1148 	u32 ouisubtype;
1149 
1150 	/* No APP TLVs then just return */
1151 	if (dcbcfg->numapps == 0)
1152 		return;
1153 	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1154 		      ICE_IEEE_SUBTYPE_APP_PRI);
1155 	tlv->ouisubtype = htonl(ouisubtype);
1156 
1157 	/* Move offset to App Priority Table */
1158 	offset++;
1159 	/* Application Priority Table (3 octets)
1160 	 * Octets:|         1          |    2    |    3    |
1161 	 *        -----------------------------------------
1162 	 *        |Priority|Rsrvd| Sel |    Protocol ID    |
1163 	 *        -----------------------------------------
1164 	 *   Bits:|23    21|20 19|18 16|15                0|
1165 	 *        -----------------------------------------
1166 	 */
1167 	while (i < dcbcfg->numapps) {
1168 		priority = dcbcfg->app[i].priority & 0x7;
1169 		selector = dcbcfg->app[i].selector & 0x7;
1170 		buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1171 		buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1172 		buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1173 		/* Move to next app */
1174 		offset += 3;
1175 		i++;
1176 		if (i >= ICE_DCBX_MAX_APPS)
1177 			break;
1178 	}
1179 	/* len includes size of ouisubtype + 1 reserved + 3*numapps */
1180 	len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1181 	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1182 	tlv->typelen = htons(typelen);
1183 }
1184 
1185 /**
1186  * ice_add_dcb_tlv - Add all IEEE TLVs
1187  * @tlv: Fill TLV data in IEEE format
1188  * @dcbcfg: Local store which holds the DCB Config
1189  * @tlvid: Type of IEEE TLV
1190  *
1191  * Add tlv information
1192  */
1193 static void
1194 ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1195 		u16 tlvid)
1196 {
1197 	switch (tlvid) {
1198 	case ICE_IEEE_TLV_ID_ETS_CFG:
1199 		ice_add_ieee_ets_tlv(tlv, dcbcfg);
1200 		break;
1201 	case ICE_IEEE_TLV_ID_ETS_REC:
1202 		ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1203 		break;
1204 	case ICE_IEEE_TLV_ID_PFC_CFG:
1205 		ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1206 		break;
1207 	case ICE_IEEE_TLV_ID_APP_PRI:
1208 		ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1209 		break;
1210 	default:
1211 		break;
1212 	}
1213 }
1214 
1215 /**
1216  * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1217  * @lldpmib: pointer to the HW struct
1218  * @miblen: length of LLDP MIB
1219  * @dcbcfg: Local store which holds the DCB Config
1220  *
1221  * Convert the DCB configuration to MIB format
1222  */
1223 static void
1224 ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1225 {
1226 	u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1227 	struct ice_lldp_org_tlv *tlv;
1228 	u16 typelen;
1229 
1230 	tlv = (struct ice_lldp_org_tlv *)lldpmib;
1231 	while (1) {
1232 		ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1233 		typelen = ntohs(tlv->typelen);
1234 		len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
1235 		if (len)
1236 			offset += len + 2;
1237 		/* END TLV or beyond LLDPDU size */
1238 		if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1239 		    offset > ICE_LLDPDU_SIZE)
1240 			break;
1241 		/* Move to next TLV */
1242 		if (len)
1243 			tlv = (struct ice_lldp_org_tlv *)
1244 				((char *)tlv + sizeof(tlv->typelen) + len);
1245 	}
1246 	*miblen = offset;
1247 }
1248 
1249 /**
1250  * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1251  * @pi: port information structure
1252  *
1253  * Set DCB configuration to the Firmware
1254  */
1255 enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi)
1256 {
1257 	u8 mib_type, *lldpmib = NULL;
1258 	struct ice_dcbx_cfg *dcbcfg;
1259 	enum ice_status ret;
1260 	struct ice_hw *hw;
1261 	u16 miblen;
1262 
1263 	if (!pi)
1264 		return ICE_ERR_PARAM;
1265 
1266 	hw = pi->hw;
1267 
1268 	/* update the HW local config */
1269 	dcbcfg = &pi->local_dcbx_cfg;
1270 	/* Allocate the LLDPDU */
1271 	lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1272 	if (!lldpmib)
1273 		return ICE_ERR_NO_MEMORY;
1274 
1275 	mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1276 	if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1277 		mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1278 
1279 	ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1280 	ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1281 				  NULL);
1282 
1283 	devm_kfree(ice_hw_to_dev(hw), lldpmib);
1284 
1285 	return ret;
1286 }
1287 
1288 /**
1289  * ice_aq_query_port_ets - query port ets configuration
1290  * @pi: port information structure
1291  * @buf: pointer to buffer
1292  * @buf_size: buffer size in bytes
1293  * @cd: pointer to command details structure or NULL
1294  *
1295  * query current port ets configuration
1296  */
1297 static enum ice_status
1298 ice_aq_query_port_ets(struct ice_port_info *pi,
1299 		      struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1300 		      struct ice_sq_cd *cd)
1301 {
1302 	struct ice_aqc_query_port_ets *cmd;
1303 	struct ice_aq_desc desc;
1304 	enum ice_status status;
1305 
1306 	if (!pi)
1307 		return ICE_ERR_PARAM;
1308 	cmd = &desc.params.port_ets;
1309 	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1310 	cmd->port_teid = pi->root->info.node_teid;
1311 
1312 	status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1313 	return status;
1314 }
1315 
1316 /**
1317  * ice_update_port_tc_tree_cfg - update TC tree configuration
1318  * @pi: port information structure
1319  * @buf: pointer to buffer
1320  *
1321  * update the SW DB with the new TC changes
1322  */
1323 static enum ice_status
1324 ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1325 			    struct ice_aqc_port_ets_elem *buf)
1326 {
1327 	struct ice_sched_node *node, *tc_node;
1328 	struct ice_aqc_get_elem elem;
1329 	enum ice_status status = 0;
1330 	u32 teid1, teid2;
1331 	u8 i, j;
1332 
1333 	if (!pi)
1334 		return ICE_ERR_PARAM;
1335 	/* suspend the missing TC nodes */
1336 	for (i = 0; i < pi->root->num_children; i++) {
1337 		teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1338 		ice_for_each_traffic_class(j) {
1339 			teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1340 			if (teid1 == teid2)
1341 				break;
1342 		}
1343 		if (j < ICE_MAX_TRAFFIC_CLASS)
1344 			continue;
1345 		/* TC is missing */
1346 		pi->root->children[i]->in_use = false;
1347 	}
1348 	/* add the new TC nodes */
1349 	ice_for_each_traffic_class(j) {
1350 		teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1351 		if (teid2 == ICE_INVAL_TEID)
1352 			continue;
1353 		/* Is it already present in the tree ? */
1354 		for (i = 0; i < pi->root->num_children; i++) {
1355 			tc_node = pi->root->children[i];
1356 			if (!tc_node)
1357 				continue;
1358 			teid1 = le32_to_cpu(tc_node->info.node_teid);
1359 			if (teid1 == teid2) {
1360 				tc_node->tc_num = j;
1361 				tc_node->in_use = true;
1362 				break;
1363 			}
1364 		}
1365 		if (i < pi->root->num_children)
1366 			continue;
1367 		/* new TC */
1368 		status = ice_sched_query_elem(pi->hw, teid2, &elem);
1369 		if (!status)
1370 			status = ice_sched_add_node(pi, 1, &elem.generic[0]);
1371 		if (status)
1372 			break;
1373 		/* update the TC number */
1374 		node = ice_sched_find_node_by_teid(pi->root, teid2);
1375 		if (node)
1376 			node->tc_num = j;
1377 	}
1378 	return status;
1379 }
1380 
1381 /**
1382  * ice_query_port_ets - query port ets configuration
1383  * @pi: port information structure
1384  * @buf: pointer to buffer
1385  * @buf_size: buffer size in bytes
1386  * @cd: pointer to command details structure or NULL
1387  *
1388  * query current port ets configuration and update the
1389  * SW DB with the TC changes
1390  */
1391 enum ice_status
1392 ice_query_port_ets(struct ice_port_info *pi,
1393 		   struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1394 		   struct ice_sq_cd *cd)
1395 {
1396 	enum ice_status status;
1397 
1398 	mutex_lock(&pi->sched_lock);
1399 	status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1400 	if (!status)
1401 		status = ice_update_port_tc_tree_cfg(pi, buf);
1402 	mutex_unlock(&pi->sched_lock);
1403 	return status;
1404 }
1405