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 |= FIELD_PREP(ICE_AQ_LLDP_BRID_TYPE_M, bridge_type);
  39
  40	desc.datalen = cpu_to_le16(buf_size);
  41
  42	status = ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
  43	if (!status) {
  44		if (local_len)
  45			*local_len = le16_to_cpu(cmd->local_len);
  46		if (remote_len)
  47			*remote_len = le16_to_cpu(cmd->remote_len);
  48	}
  49
  50	return status;
  51}
  52
  53/**
  54 * ice_aq_cfg_lldp_mib_change
  55 * @hw: pointer to the HW struct
  56 * @ena_update: Enable or Disable event posting
  57 * @cd: pointer to command details structure or NULL
  58 *
  59 * Enable or Disable posting of an event on ARQ when LLDP MIB
  60 * associated with the interface changes (0x0A01)
  61 */
  62static int
  63ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update,
  64			   struct ice_sq_cd *cd)
  65{
  66	struct ice_aqc_lldp_set_mib_change *cmd;
  67	struct ice_aq_desc desc;
  68
  69	cmd = &desc.params.lldp_set_event;
  70
  71	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change);
  72
  73	if (!ena_update)
  74		cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS;
  75	else
  76		cmd->command |= FIELD_PREP(ICE_AQ_LLDP_MIB_PENDING_M,
  77					   ICE_AQ_LLDP_MIB_PENDING_ENABLE);
  78
  79	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
  80}
  81
  82/**
  83 * ice_aq_stop_lldp
  84 * @hw: pointer to the HW struct
  85 * @shutdown_lldp_agent: True if LLDP Agent needs to be Shutdown
  86 *			 False if LLDP Agent needs to be Stopped
  87 * @persist: True if Stop/Shutdown of LLDP Agent needs to be persistent across
  88 *	     reboots
  89 * @cd: pointer to command details structure or NULL
  90 *
  91 * Stop or Shutdown the embedded LLDP Agent (0x0A05)
  92 */
  93int
  94ice_aq_stop_lldp(struct ice_hw *hw, bool shutdown_lldp_agent, bool persist,
  95		 struct ice_sq_cd *cd)
  96{
  97	struct ice_aqc_lldp_stop *cmd;
  98	struct ice_aq_desc desc;
  99
 100	cmd = &desc.params.lldp_stop;
 101
 102	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_stop);
 103
 104	if (shutdown_lldp_agent)
 105		cmd->command |= ICE_AQ_LLDP_AGENT_SHUTDOWN;
 106
 107	if (persist)
 108		cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_DIS;
 109
 110	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 111}
 112
 113/**
 114 * ice_aq_start_lldp
 115 * @hw: pointer to the HW struct
 116 * @persist: True if Start of LLDP Agent needs to be persistent across reboots
 117 * @cd: pointer to command details structure or NULL
 118 *
 119 * Start the embedded LLDP Agent on all ports. (0x0A06)
 120 */
 121int ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd)
 122{
 123	struct ice_aqc_lldp_start *cmd;
 124	struct ice_aq_desc desc;
 125
 126	cmd = &desc.params.lldp_start;
 127
 128	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start);
 129
 130	cmd->command = ICE_AQ_LLDP_AGENT_START;
 131
 132	if (persist)
 133		cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_ENA;
 134
 135	return ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 136}
 137
 138/**
 139 * ice_get_dcbx_status
 140 * @hw: pointer to the HW struct
 141 *
 142 * Get the DCBX status from the Firmware
 143 */
 144static u8 ice_get_dcbx_status(struct ice_hw *hw)
 145{
 146	u32 reg;
 147
 148	reg = rd32(hw, PRTDCB_GENS);
 149	return FIELD_GET(PRTDCB_GENS_DCBX_STATUS_M, reg);
 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 */
 159static void
 160ice_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			FIELD_GET(ICE_IEEE_ETS_PRIO_1_M, buf[offset]);
 176		ets_cfg->prio_table[i * 2 + 1] =
 177			FIELD_GET(ICE_IEEE_ETS_PRIO_0_M, buf[offset]);
 178		offset++;
 179	}
 180
 181	/* TC Bandwidth Table (8 octets)
 182	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 183	 *        ---------------------------------
 184	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 185	 *        ---------------------------------
 186	 *
 187	 * TSA Assignment Table (8 octets)
 188	 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
 189	 *        ---------------------------------
 190	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 191	 *        ---------------------------------
 192	 */
 193	ice_for_each_traffic_class(i) {
 194		ets_cfg->tcbwtable[i] = buf[offset];
 195		ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
 196	}
 197}
 198
 199/**
 200 * ice_parse_ieee_etscfg_tlv
 201 * @tlv: IEEE 802.1Qaz ETS CFG TLV
 202 * @dcbcfg: Local store to update ETS CFG data
 203 *
 204 * Parses IEEE 802.1Qaz ETS CFG TLV
 205 */
 206static void
 207ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
 208			  struct ice_dcbx_cfg *dcbcfg)
 209{
 210	struct ice_dcb_ets_cfg *etscfg;
 211	u8 *buf = tlv->tlvinfo;
 212
 213	/* First Octet post subtype
 214	 * --------------------------
 215	 * |will-|CBS  | Re-  | Max |
 216	 * |ing  |     |served| TCs |
 217	 * --------------------------
 218	 * |1bit | 1bit|3 bits|3bits|
 219	 */
 220	etscfg = &dcbcfg->etscfg;
 221	etscfg->willing = FIELD_GET(ICE_IEEE_ETS_WILLING_M, buf[0]);
 222	etscfg->cbs = FIELD_GET(ICE_IEEE_ETS_CBS_M, buf[0]);
 223	etscfg->maxtcs = FIELD_GET(ICE_IEEE_ETS_MAXTC_M, buf[0]);
 224
 225	/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
 226	ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
 227}
 228
 229/**
 230 * ice_parse_ieee_etsrec_tlv
 231 * @tlv: IEEE 802.1Qaz ETS REC TLV
 232 * @dcbcfg: Local store to update ETS REC data
 233 *
 234 * Parses IEEE 802.1Qaz ETS REC TLV
 235 */
 236static void
 237ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
 238			  struct ice_dcbx_cfg *dcbcfg)
 239{
 240	u8 *buf = tlv->tlvinfo;
 241
 242	/* Begin parsing at Priority Assignment Table (offset 1 in buf) */
 243	ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
 244}
 245
 246/**
 247 * ice_parse_ieee_pfccfg_tlv
 248 * @tlv: IEEE 802.1Qaz PFC CFG TLV
 249 * @dcbcfg: Local store to update PFC CFG data
 250 *
 251 * Parses IEEE 802.1Qaz PFC CFG TLV
 252 */
 253static void
 254ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
 255			  struct ice_dcbx_cfg *dcbcfg)
 256{
 257	u8 *buf = tlv->tlvinfo;
 258
 259	/* ----------------------------------------
 260	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
 261	 * |ing  |     |served| cap |              |
 262	 * -----------------------------------------
 263	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
 264	 */
 265	dcbcfg->pfc.willing = FIELD_GET(ICE_IEEE_PFC_WILLING_M, buf[0]);
 266	dcbcfg->pfc.mbc = FIELD_GET(ICE_IEEE_PFC_MBC_M, buf[0]);
 267	dcbcfg->pfc.pfccap = FIELD_GET(ICE_IEEE_PFC_CAP_M, buf[0]);
 268	dcbcfg->pfc.pfcena = buf[1];
 269}
 270
 271/**
 272 * ice_parse_ieee_app_tlv
 273 * @tlv: IEEE 802.1Qaz APP TLV
 274 * @dcbcfg: Local store to update APP PRIO data
 275 *
 276 * Parses IEEE 802.1Qaz APP PRIO TLV
 277 */
 278static void
 279ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
 280		       struct ice_dcbx_cfg *dcbcfg)
 281{
 282	u16 offset = 0;
 283	u16 typelen;
 284	int i = 0;
 285	u16 len;
 286	u8 *buf;
 287
 288	typelen = ntohs(tlv->typelen);
 289	len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
 290	buf = tlv->tlvinfo;
 291
 292	/* Removing sizeof(ouisubtype) and reserved byte from len.
 293	 * Remaining len div 3 is number of APP TLVs.
 294	 */
 295	len -= (sizeof(tlv->ouisubtype) + 1);
 296
 297	/* Move offset to App Priority Table */
 298	offset++;
 299
 300	/* Application Priority Table (3 octets)
 301	 * Octets:|         1          |    2    |    3    |
 302	 *        -----------------------------------------
 303	 *        |Priority|Rsrvd| Sel |    Protocol ID    |
 304	 *        -----------------------------------------
 305	 *   Bits:|23    21|20 19|18 16|15                0|
 306	 *        -----------------------------------------
 307	 */
 308	while (offset < len) {
 309		dcbcfg->app[i].priority = FIELD_GET(ICE_IEEE_APP_PRIO_M,
 310						    buf[offset]);
 311		dcbcfg->app[i].selector = FIELD_GET(ICE_IEEE_APP_SEL_M,
 312						    buf[offset]);
 313		dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
 314			buf[offset + 2];
 315		/* Move to next app */
 316		offset += 3;
 317		i++;
 318		if (i >= ICE_DCBX_MAX_APPS)
 319			break;
 320	}
 321
 322	dcbcfg->numapps = i;
 323}
 324
 325/**
 326 * ice_parse_ieee_tlv
 327 * @tlv: IEEE 802.1Qaz TLV
 328 * @dcbcfg: Local store to update ETS REC data
 329 *
 330 * Get the TLV subtype and send it to parsing function
 331 * based on the subtype value
 332 */
 333static void
 334ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 335{
 336	u32 ouisubtype;
 337	u8 subtype;
 338
 339	ouisubtype = ntohl(tlv->ouisubtype);
 340	subtype = FIELD_GET(ICE_LLDP_TLV_SUBTYPE_M, ouisubtype);
 341	switch (subtype) {
 342	case ICE_IEEE_SUBTYPE_ETS_CFG:
 343		ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
 344		break;
 345	case ICE_IEEE_SUBTYPE_ETS_REC:
 346		ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
 347		break;
 348	case ICE_IEEE_SUBTYPE_PFC_CFG:
 349		ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
 350		break;
 351	case ICE_IEEE_SUBTYPE_APP_PRI:
 352		ice_parse_ieee_app_tlv(tlv, dcbcfg);
 353		break;
 354	default:
 355		break;
 356	}
 357}
 358
 359/**
 360 * ice_parse_cee_pgcfg_tlv
 361 * @tlv: CEE DCBX PG CFG TLV
 362 * @dcbcfg: Local store to update ETS CFG data
 363 *
 364 * Parses CEE DCBX PG CFG TLV
 365 */
 366static void
 367ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
 368			struct ice_dcbx_cfg *dcbcfg)
 369{
 370	struct ice_dcb_ets_cfg *etscfg;
 371	u8 *buf = tlv->tlvinfo;
 372	u16 offset = 0;
 373	int i;
 374
 375	etscfg = &dcbcfg->etscfg;
 376
 377	if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
 378		etscfg->willing = 1;
 379
 380	etscfg->cbs = 0;
 381	/* Priority Group Table (4 octets)
 382	 * Octets:|    1    |    2    |    3    |    4    |
 383	 *        -----------------------------------------
 384	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 385	 *        -----------------------------------------
 386	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 387	 *        -----------------------------------------
 388	 */
 389	for (i = 0; i < 4; i++) {
 390		etscfg->prio_table[i * 2] =
 391			FIELD_GET(ICE_CEE_PGID_PRIO_1_M, buf[offset]);
 392		etscfg->prio_table[i * 2 + 1] =
 393			FIELD_GET(ICE_CEE_PGID_PRIO_0_M, buf[offset]);
 394		offset++;
 395	}
 396
 397	/* PG Percentage Table (8 octets)
 398	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 399	 *        ---------------------------------
 400	 *        |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
 401	 *        ---------------------------------
 402	 */
 403	ice_for_each_traffic_class(i) {
 404		etscfg->tcbwtable[i] = buf[offset++];
 405
 406		if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT)
 407			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
 408		else
 409			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
 410	}
 411
 412	/* Number of TCs supported (1 octet) */
 413	etscfg->maxtcs = buf[offset];
 414}
 415
 416/**
 417 * ice_parse_cee_pfccfg_tlv
 418 * @tlv: CEE DCBX PFC CFG TLV
 419 * @dcbcfg: Local store to update PFC CFG data
 420 *
 421 * Parses CEE DCBX PFC CFG TLV
 422 */
 423static void
 424ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
 425			 struct ice_dcbx_cfg *dcbcfg)
 426{
 427	u8 *buf = tlv->tlvinfo;
 428
 429	if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
 430		dcbcfg->pfc.willing = 1;
 431
 432	/* ------------------------
 433	 * | PFC Enable | PFC TCs |
 434	 * ------------------------
 435	 * | 1 octet    | 1 octet |
 436	 */
 437	dcbcfg->pfc.pfcena = buf[0];
 438	dcbcfg->pfc.pfccap = buf[1];
 439}
 440
 441/**
 442 * ice_parse_cee_app_tlv
 443 * @tlv: CEE DCBX APP TLV
 444 * @dcbcfg: Local store to update APP PRIO data
 445 *
 446 * Parses CEE DCBX APP PRIO TLV
 447 */
 448static void
 449ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 450{
 451	u16 len, typelen, offset = 0;
 452	struct ice_cee_app_prio *app;
 453	u8 i;
 454
 455	typelen = ntohs(tlv->hdr.typelen);
 456	len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
 457
 458	dcbcfg->numapps = len / sizeof(*app);
 459	if (!dcbcfg->numapps)
 460		return;
 461	if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
 462		dcbcfg->numapps = ICE_DCBX_MAX_APPS;
 463
 464	for (i = 0; i < dcbcfg->numapps; i++) {
 465		u8 up, selector;
 466
 467		app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
 468		for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
 469			if (app->prio_map & BIT(up))
 470				break;
 471
 472		dcbcfg->app[i].priority = up;
 473
 474		/* Get Selector from lower 2 bits, and convert to IEEE */
 475		selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
 476		switch (selector) {
 477		case ICE_CEE_APP_SEL_ETHTYPE:
 478			dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
 479			break;
 480		case ICE_CEE_APP_SEL_TCPIP:
 481			dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
 482			break;
 483		default:
 484			/* Keep selector as it is for unknown types */
 485			dcbcfg->app[i].selector = selector;
 486		}
 487
 488		dcbcfg->app[i].prot_id = ntohs(app->protocol);
 489		/* Move to next app */
 490		offset += sizeof(*app);
 491	}
 492}
 493
 494/**
 495 * ice_parse_cee_tlv
 496 * @tlv: CEE DCBX TLV
 497 * @dcbcfg: Local store to update DCBX config data
 498 *
 499 * Get the TLV subtype and send it to parsing function
 500 * based on the subtype value
 501 */
 502static void
 503ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 504{
 505	struct ice_cee_feat_tlv *sub_tlv;
 506	u8 subtype, feat_tlv_count = 0;
 507	u16 len, tlvlen, typelen;
 508	u32 ouisubtype;
 509
 510	ouisubtype = ntohl(tlv->ouisubtype);
 511	subtype = FIELD_GET(ICE_LLDP_TLV_SUBTYPE_M, ouisubtype);
 512	/* Return if not CEE DCBX */
 513	if (subtype != ICE_CEE_DCBX_TYPE)
 514		return;
 515
 516	typelen = ntohs(tlv->typelen);
 517	tlvlen = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
 518	len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
 519		sizeof(struct ice_cee_ctrl_tlv);
 520	/* Return if no CEE DCBX Feature TLVs */
 521	if (tlvlen <= len)
 522		return;
 523
 524	sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
 525	while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
 526		u16 sublen;
 527
 528		typelen = ntohs(sub_tlv->hdr.typelen);
 529		sublen = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
 530		subtype = FIELD_GET(ICE_LLDP_TLV_TYPE_M, typelen);
 531		switch (subtype) {
 532		case ICE_CEE_SUBTYPE_PG_CFG:
 533			ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
 534			break;
 535		case ICE_CEE_SUBTYPE_PFC_CFG:
 536			ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
 537			break;
 538		case ICE_CEE_SUBTYPE_APP_PRI:
 539			ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
 540			break;
 541		default:
 542			return;	/* Invalid Sub-type return */
 543		}
 544		feat_tlv_count++;
 545		/* Move to next sub TLV */
 546		sub_tlv = (struct ice_cee_feat_tlv *)
 547			  ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
 548			   sublen);
 549	}
 550}
 551
 552/**
 553 * ice_parse_org_tlv
 554 * @tlv: Organization specific TLV
 555 * @dcbcfg: Local store to update ETS REC data
 556 *
 557 * Currently IEEE 802.1Qaz and CEE DCBX TLV are supported, others
 558 * will be returned
 559 */
 560static void
 561ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 562{
 563	u32 ouisubtype;
 564	u32 oui;
 565
 566	ouisubtype = ntohl(tlv->ouisubtype);
 567	oui = FIELD_GET(ICE_LLDP_TLV_OUI_M, ouisubtype);
 568	switch (oui) {
 569	case ICE_IEEE_8021QAZ_OUI:
 570		ice_parse_ieee_tlv(tlv, dcbcfg);
 571		break;
 572	case ICE_CEE_DCBX_OUI:
 573		ice_parse_cee_tlv(tlv, dcbcfg);
 574		break;
 575	default:
 576		break; /* Other OUIs not supported */
 577	}
 578}
 579
 580/**
 581 * ice_lldp_to_dcb_cfg
 582 * @lldpmib: LLDPDU to be parsed
 583 * @dcbcfg: store for LLDPDU data
 584 *
 585 * Parse DCB configuration from the LLDPDU
 586 */
 587static int ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
 588{
 589	struct ice_lldp_org_tlv *tlv;
 590	u16 offset = 0;
 591	int ret = 0;
 592	u16 typelen;
 593	u16 type;
 594	u16 len;
 595
 596	if (!lldpmib || !dcbcfg)
 597		return -EINVAL;
 598
 599	/* set to the start of LLDPDU */
 600	lldpmib += ETH_HLEN;
 601	tlv = (struct ice_lldp_org_tlv *)lldpmib;
 602	while (1) {
 603		typelen = ntohs(tlv->typelen);
 604		type = FIELD_GET(ICE_LLDP_TLV_TYPE_M, typelen);
 605		len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
 606		offset += sizeof(typelen) + len;
 607
 608		/* END TLV or beyond LLDPDU size */
 609		if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
 610			break;
 611
 612		switch (type) {
 613		case ICE_TLV_TYPE_ORG:
 614			ice_parse_org_tlv(tlv, dcbcfg);
 615			break;
 616		default:
 617			break;
 618		}
 619
 620		/* Move to next TLV */
 621		tlv = (struct ice_lldp_org_tlv *)
 622		      ((char *)tlv + sizeof(tlv->typelen) + len);
 623	}
 624
 625	return ret;
 626}
 627
 628/**
 629 * ice_aq_get_dcb_cfg
 630 * @hw: pointer to the HW struct
 631 * @mib_type: MIB type for the query
 632 * @bridgetype: bridge type for the query (remote)
 633 * @dcbcfg: store for LLDPDU data
 634 *
 635 * Query DCB configuration from the firmware
 636 */
 637int
 638ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
 639		   struct ice_dcbx_cfg *dcbcfg)
 640{
 641	u8 *lldpmib;
 642	int ret;
 643
 644	/* Allocate the LLDPDU */
 645	lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
 646	if (!lldpmib)
 647		return -ENOMEM;
 648
 649	ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
 650				  ICE_LLDPDU_SIZE, NULL, NULL, NULL);
 651
 652	if (!ret)
 653		/* Parse LLDP MIB to get DCB configuration */
 654		ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
 655
 656	devm_kfree(ice_hw_to_dev(hw), lldpmib);
 657
 658	return ret;
 659}
 660
 661/**
 662 * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
 663 * @hw: pointer to the HW struct
 664 * @start_dcbx_agent: True if DCBX Agent needs to be started
 665 *		      False if DCBX Agent needs to be stopped
 666 * @dcbx_agent_status: FW indicates back the DCBX agent status
 667 *		       True if DCBX Agent is active
 668 *		       False if DCBX Agent is stopped
 669 * @cd: pointer to command details structure or NULL
 670 *
 671 * Start/Stop the embedded dcbx Agent. In case that this wrapper function
 672 * returns 0, caller will need to check if FW returns back the same
 673 * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
 674 */
 675int
 676ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
 677		       bool *dcbx_agent_status, struct ice_sq_cd *cd)
 678{
 679	struct ice_aqc_lldp_stop_start_specific_agent *cmd;
 680	struct ice_aq_desc desc;
 681	u16 opcode;
 682	int status;
 683
 684	cmd = &desc.params.lldp_agent_ctrl;
 685
 686	opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
 687
 688	ice_fill_dflt_direct_cmd_desc(&desc, opcode);
 689
 690	if (start_dcbx_agent)
 691		cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
 692
 693	status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 694
 695	*dcbx_agent_status = false;
 696
 697	if (!status &&
 698	    cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
 699		*dcbx_agent_status = true;
 700
 701	return status;
 702}
 703
 704/**
 705 * ice_aq_get_cee_dcb_cfg
 706 * @hw: pointer to the HW struct
 707 * @buff: response buffer that stores CEE operational configuration
 708 * @cd: pointer to command details structure or NULL
 709 *
 710 * Get CEE DCBX mode operational configuration from firmware (0x0A07)
 711 */
 712static int
 713ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
 714		       struct ice_aqc_get_cee_dcb_cfg_resp *buff,
 715		       struct ice_sq_cd *cd)
 716{
 717	struct ice_aq_desc desc;
 718
 719	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
 720
 721	return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
 722}
 723
 724/**
 725 * ice_aq_set_pfc_mode - Set PFC mode
 726 * @hw: pointer to the HW struct
 727 * @pfc_mode: value of PFC mode to set
 728 * @cd: pointer to command details structure or NULL
 729 *
 730 * This AQ call configures the PFC mode to DSCP-based PFC mode or
 731 * VLAN-based PFC (0x0303)
 732 */
 733int ice_aq_set_pfc_mode(struct ice_hw *hw, u8 pfc_mode, struct ice_sq_cd *cd)
 734{
 735	struct ice_aqc_set_query_pfc_mode *cmd;
 736	struct ice_aq_desc desc;
 737	int status;
 738
 739	if (pfc_mode > ICE_AQC_PFC_DSCP_BASED_PFC)
 740		return -EINVAL;
 741
 742	cmd = &desc.params.set_query_pfc_mode;
 743
 744	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_pfc_mode);
 745
 746	cmd->pfc_mode = pfc_mode;
 747
 748	status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 749	if (status)
 750		return status;
 751
 752	/* FW will write the PFC mode set back into cmd->pfc_mode, but if DCB is
 753	 * disabled, FW will write back 0 to cmd->pfc_mode. After the AQ has
 754	 * been executed, check if cmd->pfc_mode is what was requested. If not,
 755	 * return an error.
 756	 */
 757	if (cmd->pfc_mode != pfc_mode)
 758		return -EOPNOTSUPP;
 759
 760	return 0;
 761}
 762
 763/**
 764 * ice_cee_to_dcb_cfg
 765 * @cee_cfg: pointer to CEE configuration struct
 766 * @pi: port information structure
 767 *
 768 * Convert CEE configuration from firmware to DCB configuration
 769 */
 770static void
 771ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
 772		   struct ice_port_info *pi)
 773{
 774	u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
 775	u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift, j;
 776	u8 i, err, sync, oper, app_index, ice_app_sel_type;
 777	u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
 778	u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
 779	struct ice_dcbx_cfg *cmp_dcbcfg, *dcbcfg;
 780	u16 ice_app_prot_id_type;
 781
 782	dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
 783	dcbcfg->dcbx_mode = ICE_DCBX_MODE_CEE;
 784	dcbcfg->tlv_status = tlv_status;
 785
 786	/* CEE PG data */
 787	dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
 788
 789	/* Note that the FW creates the oper_prio_tc nibbles reversed
 790	 * from those in the CEE Priority Group sub-TLV.
 791	 */
 792	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
 793		dcbcfg->etscfg.prio_table[i * 2] =
 794			FIELD_GET(ICE_CEE_PGID_PRIO_0_M,
 795				  cee_cfg->oper_prio_tc[i]);
 796		dcbcfg->etscfg.prio_table[i * 2 + 1] =
 797			FIELD_GET(ICE_CEE_PGID_PRIO_1_M,
 798				  cee_cfg->oper_prio_tc[i]);
 799	}
 800
 801	ice_for_each_traffic_class(i) {
 802		dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
 803
 804		if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
 805			/* Map it to next empty TC */
 806			dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
 807			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
 808		} else {
 809			dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
 810		}
 811	}
 812
 813	/* CEE PFC data */
 814	dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
 815	dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
 816
 817	/* CEE APP TLV data */
 818	if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
 819		cmp_dcbcfg = &pi->qos_cfg.desired_dcbx_cfg;
 820	else
 821		cmp_dcbcfg = &pi->qos_cfg.remote_dcbx_cfg;
 822
 823	app_index = 0;
 824	for (i = 0; i < 3; i++) {
 825		if (i == 0) {
 826			/* FCoE APP */
 827			ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
 828			ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
 829			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
 830			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
 831			ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
 832			ice_app_prot_id_type = ETH_P_FCOE;
 833		} else if (i == 1) {
 834			/* iSCSI APP */
 835			ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
 836			ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
 837			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
 838			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
 839			ice_app_sel_type = ICE_APP_SEL_TCPIP;
 840			ice_app_prot_id_type = ISCSI_LISTEN_PORT;
 841
 842			for (j = 0; j < cmp_dcbcfg->numapps; j++) {
 843				u16 prot_id = cmp_dcbcfg->app[j].prot_id;
 844				u8 sel = cmp_dcbcfg->app[j].selector;
 845
 846				if  (sel == ICE_APP_SEL_TCPIP &&
 847				     (prot_id == ISCSI_LISTEN_PORT ||
 848				      prot_id == ICE_APP_PROT_ID_ISCSI_860)) {
 849					ice_app_prot_id_type = prot_id;
 850					break;
 851				}
 852			}
 853		} else {
 854			/* FIP APP */
 855			ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
 856			ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
 857			ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
 858			ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
 859			ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
 860			ice_app_prot_id_type = ETH_P_FIP;
 861		}
 862
 863		status = (tlv_status & ice_aqc_cee_status_mask) >>
 864			 ice_aqc_cee_status_shift;
 865		err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
 866		sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
 867		oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
 868		/* Add FCoE/iSCSI/FIP APP if Error is False and
 869		 * Oper/Sync is True
 870		 */
 871		if (!err && sync && oper) {
 872			dcbcfg->app[app_index].priority =
 873				(app_prio & ice_aqc_cee_app_mask) >>
 874				ice_aqc_cee_app_shift;
 875			dcbcfg->app[app_index].selector = ice_app_sel_type;
 876			dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
 877			app_index++;
 878		}
 879	}
 880
 881	dcbcfg->numapps = app_index;
 882}
 883
 884/**
 885 * ice_get_ieee_or_cee_dcb_cfg
 886 * @pi: port information structure
 887 * @dcbx_mode: mode of DCBX (IEEE or CEE)
 888 *
 889 * Get IEEE or CEE mode DCB configuration from the Firmware
 890 */
 891static int ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
 892{
 893	struct ice_dcbx_cfg *dcbx_cfg = NULL;
 894	int ret;
 895
 896	if (!pi)
 897		return -EINVAL;
 898
 899	if (dcbx_mode == ICE_DCBX_MODE_IEEE)
 900		dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
 901	else if (dcbx_mode == ICE_DCBX_MODE_CEE)
 902		dcbx_cfg = &pi->qos_cfg.desired_dcbx_cfg;
 903
 904	/* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
 905	 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
 906	 */
 907	ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
 908				 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
 909	if (ret)
 910		goto out;
 911
 912	/* Get Remote DCB Config */
 913	dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg;
 914	ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
 915				 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
 916	/* Don't treat ENOENT as an error for Remote MIBs */
 917	if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
 918		ret = 0;
 919
 920out:
 921	return ret;
 922}
 923
 924/**
 925 * ice_get_dcb_cfg
 926 * @pi: port information structure
 927 *
 928 * Get DCB configuration from the Firmware
 929 */
 930int ice_get_dcb_cfg(struct ice_port_info *pi)
 931{
 932	struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
 933	struct ice_dcbx_cfg *dcbx_cfg;
 934	int ret;
 935
 936	if (!pi)
 937		return -EINVAL;
 938
 939	ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
 940	if (!ret) {
 941		/* CEE mode */
 942		ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
 943		ice_cee_to_dcb_cfg(&cee_cfg, pi);
 944	} else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
 945		/* CEE mode not enabled try querying IEEE data */
 946		dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
 947		dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
 948		ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
 949	}
 950
 951	return ret;
 952}
 953
 954/**
 955 * ice_get_dcb_cfg_from_mib_change
 956 * @pi: port information structure
 957 * @event: pointer to the admin queue receive event
 958 *
 959 * Set DCB configuration from received MIB Change event
 960 */
 961void ice_get_dcb_cfg_from_mib_change(struct ice_port_info *pi,
 962				     struct ice_rq_event_info *event)
 963{
 964	struct ice_dcbx_cfg *dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg;
 965	struct ice_aqc_lldp_get_mib *mib;
 966	u8 change_type, dcbx_mode;
 967
 968	mib = (struct ice_aqc_lldp_get_mib *)&event->desc.params.raw;
 969
 970	change_type = FIELD_GET(ICE_AQ_LLDP_MIB_TYPE_M, mib->type);
 971	if (change_type == ICE_AQ_LLDP_MIB_REMOTE)
 972		dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg;
 973
 974	dcbx_mode = FIELD_GET(ICE_AQ_LLDP_DCBX_M, mib->type);
 975
 976	switch (dcbx_mode) {
 977	case ICE_AQ_LLDP_DCBX_IEEE:
 978		dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
 979		ice_lldp_to_dcb_cfg(event->msg_buf, dcbx_cfg);
 980		break;
 981
 982	case ICE_AQ_LLDP_DCBX_CEE:
 983		pi->qos_cfg.desired_dcbx_cfg = pi->qos_cfg.local_dcbx_cfg;
 984		ice_cee_to_dcb_cfg((struct ice_aqc_get_cee_dcb_cfg_resp *)
 985				   event->msg_buf, pi);
 986		break;
 987	}
 988}
 989
 990/**
 991 * ice_init_dcb
 992 * @hw: pointer to the HW struct
 993 * @enable_mib_change: enable MIB change event
 994 *
 995 * Update DCB configuration from the Firmware
 996 */
 997int ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
 998{
 999	struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
1000	int ret = 0;
1001
1002	if (!hw->func_caps.common_cap.dcb)
1003		return -EOPNOTSUPP;
1004
1005	qos_cfg->is_sw_lldp = true;
1006
1007	/* Get DCBX status */
1008	qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
1009
1010	if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DONE ||
1011	    qos_cfg->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
1012	    qos_cfg->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
1013		/* Get current DCBX configuration */
1014		ret = ice_get_dcb_cfg(hw->port_info);
1015		if (ret)
1016			return ret;
1017		qos_cfg->is_sw_lldp = false;
1018	} else if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) {
1019		return -EBUSY;
1020	}
1021
1022	/* Configure the LLDP MIB change event */
1023	if (enable_mib_change) {
1024		ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
1025		if (ret)
1026			qos_cfg->is_sw_lldp = true;
1027	}
1028
1029	return ret;
1030}
1031
1032/**
1033 * ice_cfg_lldp_mib_change
1034 * @hw: pointer to the HW struct
1035 * @ena_mib: enable/disable MIB change event
1036 *
1037 * Configure (disable/enable) MIB
1038 */
1039int ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
1040{
1041	struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg;
1042	int ret;
1043
1044	if (!hw->func_caps.common_cap.dcb)
1045		return -EOPNOTSUPP;
1046
1047	/* Get DCBX status */
1048	qos_cfg->dcbx_status = ice_get_dcbx_status(hw);
1049
1050	if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS)
1051		return -EBUSY;
1052
1053	ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
1054	if (!ret)
1055		qos_cfg->is_sw_lldp = !ena_mib;
1056
1057	return ret;
1058}
1059
1060/**
1061 * ice_add_ieee_ets_common_tlv
1062 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
1063 * @ets_cfg: Container for ice_dcb_ets_cfg data
1064 *
1065 * Populate the TLV buffer with ice_dcb_ets_cfg data
1066 */
1067static void
1068ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
1069{
1070	u8 priority0, priority1;
1071	u8 offset = 0;
1072	int i;
1073
1074	/* Priority Assignment Table (4 octets)
1075	 * Octets:|    1    |    2    |    3    |    4    |
1076	 *        -----------------------------------------
1077	 *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1078	 *        -----------------------------------------
1079	 *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
1080	 *        -----------------------------------------
1081	 */
1082	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
1083		priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1084		priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1085		buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1086		offset++;
1087	}
1088
1089	/* TC Bandwidth Table (8 octets)
1090	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1091	 *        ---------------------------------
1092	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1093	 *        ---------------------------------
1094	 *
1095	 * TSA Assignment Table (8 octets)
1096	 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1097	 *        ---------------------------------
1098	 *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1099	 *        ---------------------------------
1100	 */
1101	ice_for_each_traffic_class(i) {
1102		buf[offset] = ets_cfg->tcbwtable[i];
1103		buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1104		offset++;
1105	}
1106}
1107
1108/**
1109 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1110 * @tlv: Fill the ETS config data in IEEE format
1111 * @dcbcfg: Local store which holds the DCB Config
1112 *
1113 * Prepare IEEE 802.1Qaz ETS CFG TLV
1114 */
1115static void
1116ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1117{
1118	struct ice_dcb_ets_cfg *etscfg;
1119	u8 *buf = tlv->tlvinfo;
1120	u8 maxtcwilling = 0;
1121	u32 ouisubtype;
1122	u16 typelen;
1123
1124	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1125		   ICE_IEEE_ETS_TLV_LEN);
1126	tlv->typelen = htons(typelen);
1127
1128	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1129		      ICE_IEEE_SUBTYPE_ETS_CFG);
1130	tlv->ouisubtype = htonl(ouisubtype);
1131
1132	/* First Octet post subtype
1133	 * --------------------------
1134	 * |will-|CBS  | Re-  | Max |
1135	 * |ing  |     |served| TCs |
1136	 * --------------------------
1137	 * |1bit | 1bit|3 bits|3bits|
1138	 */
1139	etscfg = &dcbcfg->etscfg;
1140	if (etscfg->willing)
1141		maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1142	maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1143	buf[0] = maxtcwilling;
1144
1145	/* Begin adding at Priority Assignment Table (offset 1 in buf) */
1146	ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1147}
1148
1149/**
1150 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1151 * @tlv: Fill ETS Recommended TLV in IEEE format
1152 * @dcbcfg: Local store which holds the DCB Config
1153 *
1154 * Prepare IEEE 802.1Qaz ETS REC TLV
1155 */
1156static void
1157ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1158			struct ice_dcbx_cfg *dcbcfg)
1159{
1160	struct ice_dcb_ets_cfg *etsrec;
1161	u8 *buf = tlv->tlvinfo;
1162	u32 ouisubtype;
1163	u16 typelen;
1164
1165	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1166		   ICE_IEEE_ETS_TLV_LEN);
1167	tlv->typelen = htons(typelen);
1168
1169	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1170		      ICE_IEEE_SUBTYPE_ETS_REC);
1171	tlv->ouisubtype = htonl(ouisubtype);
1172
1173	etsrec = &dcbcfg->etsrec;
1174
1175	/* First Octet is reserved */
1176	/* Begin adding at Priority Assignment Table (offset 1 in buf) */
1177	ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1178}
1179
1180/**
1181 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1182 * @tlv: Fill PFC TLV in IEEE format
1183 * @dcbcfg: Local store which holds the PFC CFG data
1184 *
1185 * Prepare IEEE 802.1Qaz PFC CFG TLV
1186 */
1187static void
1188ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1189{
1190	u8 *buf = tlv->tlvinfo;
1191	u32 ouisubtype;
1192	u16 typelen;
1193
1194	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1195		   ICE_IEEE_PFC_TLV_LEN);
1196	tlv->typelen = htons(typelen);
1197
1198	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1199		      ICE_IEEE_SUBTYPE_PFC_CFG);
1200	tlv->ouisubtype = htonl(ouisubtype);
1201
1202	/* ----------------------------------------
1203	 * |will-|MBC  | Re-  | PFC |  PFC Enable  |
1204	 * |ing  |     |served| cap |              |
1205	 * -----------------------------------------
1206	 * |1bit | 1bit|2 bits|4bits| 1 octet      |
1207	 */
1208	if (dcbcfg->pfc.willing)
1209		buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1210
1211	if (dcbcfg->pfc.mbc)
1212		buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1213
1214	buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1215	buf[1] = dcbcfg->pfc.pfcena;
1216}
1217
1218/**
1219 * ice_add_ieee_app_pri_tlv -  Prepare APP TLV in IEEE format
1220 * @tlv: Fill APP TLV in IEEE format
1221 * @dcbcfg: Local store which holds the APP CFG data
1222 *
1223 * Prepare IEEE 802.1Qaz APP CFG TLV
1224 */
1225static void
1226ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1227			 struct ice_dcbx_cfg *dcbcfg)
1228{
1229	u16 typelen, len, offset = 0;
1230	u8 priority, selector, i = 0;
1231	u8 *buf = tlv->tlvinfo;
1232	u32 ouisubtype;
1233
1234	/* No APP TLVs then just return */
1235	if (dcbcfg->numapps == 0)
1236		return;
1237	ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1238		      ICE_IEEE_SUBTYPE_APP_PRI);
1239	tlv->ouisubtype = htonl(ouisubtype);
1240
1241	/* Move offset to App Priority Table */
1242	offset++;
1243	/* Application Priority Table (3 octets)
1244	 * Octets:|         1          |    2    |    3    |
1245	 *        -----------------------------------------
1246	 *        |Priority|Rsrvd| Sel |    Protocol ID    |
1247	 *        -----------------------------------------
1248	 *   Bits:|23    21|20 19|18 16|15                0|
1249	 *        -----------------------------------------
1250	 */
1251	while (i < dcbcfg->numapps) {
1252		priority = dcbcfg->app[i].priority & 0x7;
1253		selector = dcbcfg->app[i].selector & 0x7;
1254		buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1255		buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1256		buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1257		/* Move to next app */
1258		offset += 3;
1259		i++;
1260		if (i >= ICE_DCBX_MAX_APPS)
1261			break;
1262	}
1263	/* len includes size of ouisubtype + 1 reserved + 3*numapps */
1264	len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1265	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1266	tlv->typelen = htons(typelen);
1267}
1268
1269/**
1270 * ice_add_dscp_up_tlv - Prepare DSCP to UP TLV
1271 * @tlv: location to build the TLV data
1272 * @dcbcfg: location of data to convert to TLV
1273 */
1274static void
1275ice_add_dscp_up_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1276{
1277	u8 *buf = tlv->tlvinfo;
1278	u32 ouisubtype;
1279	u16 typelen;
1280	int i;
1281
1282	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1283		   ICE_DSCP_UP_TLV_LEN);
1284	tlv->typelen = htons(typelen);
1285
1286	ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1287			   ICE_DSCP_SUBTYPE_DSCP2UP);
1288	tlv->ouisubtype = htonl(ouisubtype);
1289
1290	/* bytes 0 - 63 - IPv4 DSCP2UP LUT */
1291	for (i = 0; i < ICE_DSCP_NUM_VAL; i++) {
1292		/* IPv4 mapping */
1293		buf[i] = dcbcfg->dscp_map[i];
1294		/* IPv6 mapping */
1295		buf[i + ICE_DSCP_IPV6_OFFSET] = dcbcfg->dscp_map[i];
1296	}
1297
1298	/* byte 64 - IPv4 untagged traffic */
1299	buf[i] = 0;
1300
1301	/* byte 144 - IPv6 untagged traffic */
1302	buf[i + ICE_DSCP_IPV6_OFFSET] = 0;
1303}
1304
1305#define ICE_BYTES_PER_TC	8
1306/**
1307 * ice_add_dscp_enf_tlv - Prepare DSCP Enforcement TLV
1308 * @tlv: location to build the TLV data
1309 */
1310static void
1311ice_add_dscp_enf_tlv(struct ice_lldp_org_tlv *tlv)
1312{
1313	u8 *buf = tlv->tlvinfo;
1314	u32 ouisubtype;
1315	u16 typelen;
1316
1317	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1318		   ICE_DSCP_ENF_TLV_LEN);
1319	tlv->typelen = htons(typelen);
1320
1321	ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1322			   ICE_DSCP_SUBTYPE_ENFORCE);
1323	tlv->ouisubtype = htonl(ouisubtype);
1324
1325	/* Allow all DSCP values to be valid for all TC's (IPv4 and IPv6) */
1326	memset(buf, 0, 2 * (ICE_MAX_TRAFFIC_CLASS * ICE_BYTES_PER_TC));
1327}
1328
1329/**
1330 * ice_add_dscp_tc_bw_tlv - Prepare DSCP BW for TC TLV
1331 * @tlv: location to build the TLV data
1332 * @dcbcfg: location of the data to convert to TLV
1333 */
1334static void
1335ice_add_dscp_tc_bw_tlv(struct ice_lldp_org_tlv *tlv,
1336		       struct ice_dcbx_cfg *dcbcfg)
1337{
1338	struct ice_dcb_ets_cfg *etscfg;
1339	u8 *buf = tlv->tlvinfo;
1340	u32 ouisubtype;
1341	u8 offset = 0;
1342	u16 typelen;
1343	int i;
1344
1345	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1346		   ICE_DSCP_TC_BW_TLV_LEN);
1347	tlv->typelen = htons(typelen);
1348
1349	ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1350			   ICE_DSCP_SUBTYPE_TCBW);
1351	tlv->ouisubtype = htonl(ouisubtype);
1352
1353	/* First Octect after subtype
1354	 * ----------------------------
1355	 * | RSV | CBS | RSV | Max TCs |
1356	 * | 1b  | 1b  | 3b  | 3b      |
1357	 * ----------------------------
1358	 */
1359	etscfg = &dcbcfg->etscfg;
1360	buf[0] = etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1361
1362	/* bytes 1 - 4 reserved */
1363	offset = 5;
1364
1365	/* TC BW table
1366	 * bytes 0 - 7 for TC 0 - 7
1367	 *
1368	 * TSA Assignment table
1369	 * bytes 8 - 15 for TC 0 - 7
1370	 */
1371	for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) {
1372		buf[offset] = etscfg->tcbwtable[i];
1373		buf[offset + ICE_MAX_TRAFFIC_CLASS] = etscfg->tsatable[i];
1374		offset++;
1375	}
1376}
1377
1378/**
1379 * ice_add_dscp_pfc_tlv - Prepare DSCP PFC TLV
1380 * @tlv: Fill PFC TLV in IEEE format
1381 * @dcbcfg: Local store which holds the PFC CFG data
1382 */
1383static void
1384ice_add_dscp_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1385{
1386	u8 *buf = tlv->tlvinfo;
1387	u32 ouisubtype;
1388	u16 typelen;
1389
1390	typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1391		   ICE_DSCP_PFC_TLV_LEN);
1392	tlv->typelen = htons(typelen);
1393
1394	ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) |
1395			   ICE_DSCP_SUBTYPE_PFC);
1396	tlv->ouisubtype = htonl(ouisubtype);
1397
1398	buf[0] = dcbcfg->pfc.pfccap & 0xF;
1399	buf[1] = dcbcfg->pfc.pfcena;
1400}
1401
1402/**
1403 * ice_add_dcb_tlv - Add all IEEE or DSCP TLVs
1404 * @tlv: Fill TLV data in IEEE format
1405 * @dcbcfg: Local store which holds the DCB Config
1406 * @tlvid: Type of IEEE TLV
1407 *
1408 * Add tlv information
1409 */
1410static void
1411ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1412		u16 tlvid)
1413{
1414	if (dcbcfg->pfc_mode == ICE_QOS_MODE_VLAN) {
1415		switch (tlvid) {
1416		case ICE_IEEE_TLV_ID_ETS_CFG:
1417			ice_add_ieee_ets_tlv(tlv, dcbcfg);
1418			break;
1419		case ICE_IEEE_TLV_ID_ETS_REC:
1420			ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1421			break;
1422		case ICE_IEEE_TLV_ID_PFC_CFG:
1423			ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1424			break;
1425		case ICE_IEEE_TLV_ID_APP_PRI:
1426			ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1427			break;
1428		default:
1429			break;
1430		}
1431	} else {
1432		/* pfc_mode == ICE_QOS_MODE_DSCP */
1433		switch (tlvid) {
1434		case ICE_TLV_ID_DSCP_UP:
1435			ice_add_dscp_up_tlv(tlv, dcbcfg);
1436			break;
1437		case ICE_TLV_ID_DSCP_ENF:
1438			ice_add_dscp_enf_tlv(tlv);
1439			break;
1440		case ICE_TLV_ID_DSCP_TC_BW:
1441			ice_add_dscp_tc_bw_tlv(tlv, dcbcfg);
1442			break;
1443		case ICE_TLV_ID_DSCP_TO_PFC:
1444			ice_add_dscp_pfc_tlv(tlv, dcbcfg);
1445			break;
1446		default:
1447			break;
1448		}
1449	}
1450}
1451
1452/**
1453 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1454 * @lldpmib: pointer to the HW struct
1455 * @miblen: length of LLDP MIB
1456 * @dcbcfg: Local store which holds the DCB Config
1457 *
1458 * Convert the DCB configuration to MIB format
1459 */
1460static void
1461ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1462{
1463	u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1464	struct ice_lldp_org_tlv *tlv;
1465	u16 typelen;
1466
1467	tlv = (struct ice_lldp_org_tlv *)lldpmib;
1468	while (1) {
1469		ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1470		typelen = ntohs(tlv->typelen);
1471		len = FIELD_GET(ICE_LLDP_TLV_LEN_M, typelen);
1472		if (len)
1473			offset += len + 2;
1474		/* END TLV or beyond LLDPDU size */
1475		if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1476		    offset > ICE_LLDPDU_SIZE)
1477			break;
1478		/* Move to next TLV */
1479		if (len)
1480			tlv = (struct ice_lldp_org_tlv *)
1481				((char *)tlv + sizeof(tlv->typelen) + len);
1482	}
1483	*miblen = offset;
1484}
1485
1486/**
1487 * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1488 * @pi: port information structure
1489 *
1490 * Set DCB configuration to the Firmware
1491 */
1492int ice_set_dcb_cfg(struct ice_port_info *pi)
1493{
1494	u8 mib_type, *lldpmib = NULL;
1495	struct ice_dcbx_cfg *dcbcfg;
1496	struct ice_hw *hw;
1497	u16 miblen;
1498	int ret;
1499
1500	if (!pi)
1501		return -EINVAL;
1502
1503	hw = pi->hw;
1504
1505	/* update the HW local config */
1506	dcbcfg = &pi->qos_cfg.local_dcbx_cfg;
1507	/* Allocate the LLDPDU */
1508	lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1509	if (!lldpmib)
1510		return -ENOMEM;
1511
1512	mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1513	if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1514		mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1515
1516	ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1517	ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1518				  NULL);
1519
1520	devm_kfree(ice_hw_to_dev(hw), lldpmib);
1521
1522	return ret;
1523}
1524
1525/**
1526 * ice_aq_query_port_ets - query port ETS configuration
1527 * @pi: port information structure
1528 * @buf: pointer to buffer
1529 * @buf_size: buffer size in bytes
1530 * @cd: pointer to command details structure or NULL
1531 *
1532 * query current port ETS configuration
1533 */
1534static int
1535ice_aq_query_port_ets(struct ice_port_info *pi,
1536		      struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1537		      struct ice_sq_cd *cd)
1538{
1539	struct ice_aqc_query_port_ets *cmd;
1540	struct ice_aq_desc desc;
1541	int status;
1542
1543	if (!pi)
1544		return -EINVAL;
1545	cmd = &desc.params.port_ets;
1546	ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1547	cmd->port_teid = pi->root->info.node_teid;
1548
1549	status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1550	return status;
1551}
1552
1553/**
1554 * ice_update_port_tc_tree_cfg - update TC tree configuration
1555 * @pi: port information structure
1556 * @buf: pointer to buffer
1557 *
1558 * update the SW DB with the new TC changes
1559 */
1560static int
1561ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1562			    struct ice_aqc_port_ets_elem *buf)
1563{
1564	struct ice_sched_node *node, *tc_node;
1565	struct ice_aqc_txsched_elem_data elem;
1566	u32 teid1, teid2;
1567	int status = 0;
1568	u8 i, j;
1569
1570	if (!pi)
1571		return -EINVAL;
1572	/* suspend the missing TC nodes */
1573	for (i = 0; i < pi->root->num_children; i++) {
1574		teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1575		ice_for_each_traffic_class(j) {
1576			teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1577			if (teid1 == teid2)
1578				break;
1579		}
1580		if (j < ICE_MAX_TRAFFIC_CLASS)
1581			continue;
1582		/* TC is missing */
1583		pi->root->children[i]->in_use = false;
1584	}
1585	/* add the new TC nodes */
1586	ice_for_each_traffic_class(j) {
1587		teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1588		if (teid2 == ICE_INVAL_TEID)
1589			continue;
1590		/* Is it already present in the tree ? */
1591		for (i = 0; i < pi->root->num_children; i++) {
1592			tc_node = pi->root->children[i];
1593			if (!tc_node)
1594				continue;
1595			teid1 = le32_to_cpu(tc_node->info.node_teid);
1596			if (teid1 == teid2) {
1597				tc_node->tc_num = j;
1598				tc_node->in_use = true;
1599				break;
1600			}
1601		}
1602		if (i < pi->root->num_children)
1603			continue;
1604		/* new TC */
1605		status = ice_sched_query_elem(pi->hw, teid2, &elem);
1606		if (!status)
1607			status = ice_sched_add_node(pi, 1, &elem, NULL);
1608		if (status)
1609			break;
1610		/* update the TC number */
1611		node = ice_sched_find_node_by_teid(pi->root, teid2);
1612		if (node)
1613			node->tc_num = j;
1614	}
1615	return status;
1616}
1617
1618/**
1619 * ice_query_port_ets - query port ETS configuration
1620 * @pi: port information structure
1621 * @buf: pointer to buffer
1622 * @buf_size: buffer size in bytes
1623 * @cd: pointer to command details structure or NULL
1624 *
1625 * query current port ETS configuration and update the
1626 * SW DB with the TC changes
1627 */
1628int
1629ice_query_port_ets(struct ice_port_info *pi,
1630		   struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1631		   struct ice_sq_cd *cd)
1632{
1633	int status;
1634
1635	mutex_lock(&pi->sched_lock);
1636	status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1637	if (!status)
1638		status = ice_update_port_tc_tree_cfg(pi, buf);
1639	mutex_unlock(&pi->sched_lock);
1640	return status;
1641}