1// SPDX-License-Identifier: GPL-2.0 2/* Copyright (c) 2019, Intel Corporation. */ 3 4#include "ice_common.h" 5#include "ice_sched.h" 6#include "ice_dcb.h" 7 8/** 9 * ice_aq_get_lldp_mib 10 * @hw: pointer to the HW struct 11 * @bridge_type: type of bridge requested 12 * @mib_type: Local, Remote or both Local and Remote MIBs 13 * @buf: pointer to the caller-supplied buffer to store the MIB block 14 * @buf_size: size of the buffer (in bytes) 15 * @local_len: length of the returned Local LLDP MIB 16 * @remote_len: length of the returned Remote LLDP MIB 17 * @cd: pointer to command details structure or NULL 18 * 19 * Requests the complete LLDP MIB (entire packet). (0x0A00) 20 */ 21static int 22ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf, 23 u16 buf_size, u16 *local_len, u16 *remote_len, 24 struct ice_sq_cd *cd) 25{ 26 struct ice_aqc_lldp_get_mib *cmd; 27 struct ice_aq_desc desc; 28 int status; 29 30 cmd = &desc.params.lldp_get_mib; 31 32 if (buf_size == 0 || !buf) 33 return -EINVAL; 34 35 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_get_mib); 36 37 cmd->type = mib_type & ICE_AQ_LLDP_MIB_TYPE_M; 38 cmd->type |= (bridge_type << ICE_AQ_LLDP_BRID_TYPE_S) & 39 ICE_AQ_LLDP_BRID_TYPE_M; 40 41 desc.datalen = cpu_to_le16(buf_size); 42 43 status = ice_aq_send_cmd(hw, &desc, buf, buf_size, cd); 44 if (!status) { 45 if (local_len) 46 *local_len = le16_to_cpu(cmd->local_len); 47 if (remote_len) 48 *remote_len = le16_to_cpu(cmd->remote_len); 49 } 50 51 return status; 52} 53 54/** 55 * ice_aq_cfg_lldp_mib_change 56 * @hw: pointer to the HW struct 57 * @ena_update: Enable or Disable event posting 58 * @cd: pointer to command details structure or NULL 59 * 60 * Enable or Disable posting of an event on ARQ when LLDP MIB 61 * associated with the interface changes (0x0A01) 62 */ 63static int 64ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update, 65 struct ice_sq_cd *cd) 66{ 67 struct ice_aqc_lldp_set_mib_change *cmd; 68 struct ice_aq_desc desc; 69 70 cmd = &desc.params.lldp_set_event; 71 72 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change); 73 74 if (!ena_update) 75 cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS; 76 else 77 cmd->command |= FIELD_PREP(ICE_AQ_LLDP_MIB_PENDING_M, 78 ICE_AQ_LLDP_MIB_PENDING_ENABLE); 79 80 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd); 81} 82 83/** 84 * ice_aq_stop_lldp 85 * @hw: pointer to the HW struct 86 * @shutdown_lldp_agent: True if LLDP Agent needs to be Shutdown 87 * False if LLDP Agent needs to be Stopped 88 * @persist: True if Stop/Shutdown of LLDP Agent needs to be persistent across 89 * reboots 90 * @cd: pointer to command details structure or NULL 91 * 92 * Stop or Shutdown the embedded LLDP Agent (0x0A05) 93 */ 94int 95ice_aq_stop_lldp(struct ice_hw *hw, bool shutdown_lldp_agent, bool persist, 96 struct ice_sq_cd *cd) 97{ 98 struct ice_aqc_lldp_stop *cmd; 99 struct ice_aq_desc desc; 100 101 cmd = &desc.params.lldp_stop; 102 103 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_stop); 104 105 if (shutdown_lldp_agent) 106 cmd->command |= ICE_AQ_LLDP_AGENT_SHUTDOWN; 107 108 if (persist) 109 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_DIS; 110 111 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd); 112} 113 114/** 115 * ice_aq_start_lldp 116 * @hw: pointer to the HW struct 117 * @persist: True if Start of LLDP Agent needs to be persistent across reboots 118 * @cd: pointer to command details structure or NULL 119 * 120 * Start the embedded LLDP Agent on all ports. (0x0A06) 121 */ 122int ice_aq_start_lldp(struct ice_hw *hw, bool persist, struct ice_sq_cd *cd) 123{ 124 struct ice_aqc_lldp_start *cmd; 125 struct ice_aq_desc desc; 126 127 cmd = &desc.params.lldp_start; 128 129 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_start); 130 131 cmd->command = ICE_AQ_LLDP_AGENT_START; 132 133 if (persist) 134 cmd->command |= ICE_AQ_LLDP_AGENT_PERSIST_ENA; 135 136 return ice_aq_send_cmd(hw, &desc, NULL, 0, cd); 137} 138 139/** 140 * ice_get_dcbx_status 141 * @hw: pointer to the HW struct 142 * 143 * Get the DCBX status from the Firmware 144 */ 145static u8 ice_get_dcbx_status(struct ice_hw *hw) 146{ 147 u32 reg; 148 149 reg = rd32(hw, PRTDCB_GENS); 150 return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >> 151 PRTDCB_GENS_DCBX_STATUS_S); 152} 153 154/** 155 * ice_parse_ieee_ets_common_tlv 156 * @buf: Data buffer to be parsed for ETS CFG/REC data 157 * @ets_cfg: Container to store parsed data 158 * 159 * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV 160 */ 161static void 162ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg) 163{ 164 u8 offset = 0; 165 int i; 166 167 /* Priority Assignment Table (4 octets) 168 * Octets:| 1 | 2 | 3 | 4 | 169 * ----------------------------------------- 170 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 171 * ----------------------------------------- 172 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 173 * ----------------------------------------- 174 */ 175 for (i = 0; i < 4; i++) { 176 ets_cfg->prio_table[i * 2] = 177 ((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >> 178 ICE_IEEE_ETS_PRIO_1_S); 179 ets_cfg->prio_table[i * 2 + 1] = 180 ((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >> 181 ICE_IEEE_ETS_PRIO_0_S); 182 offset++; 183 } 184 185 /* TC Bandwidth Table (8 octets) 186 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 187 * --------------------------------- 188 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 189 * --------------------------------- 190 * 191 * TSA Assignment Table (8 octets) 192 * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16| 193 * --------------------------------- 194 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 195 * --------------------------------- 196 */ 197 ice_for_each_traffic_class(i) { 198 ets_cfg->tcbwtable[i] = buf[offset]; 199 ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++]; 200 } 201} 202 203/** 204 * ice_parse_ieee_etscfg_tlv 205 * @tlv: IEEE 802.1Qaz ETS CFG TLV 206 * @dcbcfg: Local store to update ETS CFG data 207 * 208 * Parses IEEE 802.1Qaz ETS CFG TLV 209 */ 210static void 211ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv, 212 struct ice_dcbx_cfg *dcbcfg) 213{ 214 struct ice_dcb_ets_cfg *etscfg; 215 u8 *buf = tlv->tlvinfo; 216 217 /* First Octet post subtype 218 * -------------------------- 219 * |will-|CBS | Re- | Max | 220 * |ing | |served| TCs | 221 * -------------------------- 222 * |1bit | 1bit|3 bits|3bits| 223 */ 224 etscfg = &dcbcfg->etscfg; 225 etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >> 226 ICE_IEEE_ETS_WILLING_S); 227 etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S); 228 etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >> 229 ICE_IEEE_ETS_MAXTC_S); 230 231 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */ 232 ice_parse_ieee_ets_common_tlv(&buf[1], etscfg); 233} 234 235/** 236 * ice_parse_ieee_etsrec_tlv 237 * @tlv: IEEE 802.1Qaz ETS REC TLV 238 * @dcbcfg: Local store to update ETS REC data 239 * 240 * Parses IEEE 802.1Qaz ETS REC TLV 241 */ 242static void 243ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv, 244 struct ice_dcbx_cfg *dcbcfg) 245{ 246 u8 *buf = tlv->tlvinfo; 247 248 /* Begin parsing at Priority Assignment Table (offset 1 in buf) */ 249 ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec); 250} 251 252/** 253 * ice_parse_ieee_pfccfg_tlv 254 * @tlv: IEEE 802.1Qaz PFC CFG TLV 255 * @dcbcfg: Local store to update PFC CFG data 256 * 257 * Parses IEEE 802.1Qaz PFC CFG TLV 258 */ 259static void 260ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv, 261 struct ice_dcbx_cfg *dcbcfg) 262{ 263 u8 *buf = tlv->tlvinfo; 264 265 /* ---------------------------------------- 266 * |will-|MBC | Re- | PFC | PFC Enable | 267 * |ing | |served| cap | | 268 * ----------------------------------------- 269 * |1bit | 1bit|2 bits|4bits| 1 octet | 270 */ 271 dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >> 272 ICE_IEEE_PFC_WILLING_S); 273 dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S); 274 dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >> 275 ICE_IEEE_PFC_CAP_S); 276 dcbcfg->pfc.pfcena = buf[1]; 277} 278 279/** 280 * ice_parse_ieee_app_tlv 281 * @tlv: IEEE 802.1Qaz APP TLV 282 * @dcbcfg: Local store to update APP PRIO data 283 * 284 * Parses IEEE 802.1Qaz APP PRIO TLV 285 */ 286static void 287ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv, 288 struct ice_dcbx_cfg *dcbcfg) 289{ 290 u16 offset = 0; 291 u16 typelen; 292 int i = 0; 293 u16 len; 294 u8 *buf; 295 296 typelen = ntohs(tlv->typelen); 297 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S); 298 buf = tlv->tlvinfo; 299 300 /* Removing sizeof(ouisubtype) and reserved byte from len. 301 * Remaining len div 3 is number of APP TLVs. 302 */ 303 len -= (sizeof(tlv->ouisubtype) + 1); 304 305 /* Move offset to App Priority Table */ 306 offset++; 307 308 /* Application Priority Table (3 octets) 309 * Octets:| 1 | 2 | 3 | 310 * ----------------------------------------- 311 * |Priority|Rsrvd| Sel | Protocol ID | 312 * ----------------------------------------- 313 * Bits:|23 21|20 19|18 16|15 0| 314 * ----------------------------------------- 315 */ 316 while (offset < len) { 317 dcbcfg->app[i].priority = ((buf[offset] & 318 ICE_IEEE_APP_PRIO_M) >> 319 ICE_IEEE_APP_PRIO_S); 320 dcbcfg->app[i].selector = ((buf[offset] & 321 ICE_IEEE_APP_SEL_M) >> 322 ICE_IEEE_APP_SEL_S); 323 dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) | 324 buf[offset + 2]; 325 /* Move to next app */ 326 offset += 3; 327 i++; 328 if (i >= ICE_DCBX_MAX_APPS) 329 break; 330 } 331 332 dcbcfg->numapps = i; 333} 334 335/** 336 * ice_parse_ieee_tlv 337 * @tlv: IEEE 802.1Qaz TLV 338 * @dcbcfg: Local store to update ETS REC data 339 * 340 * Get the TLV subtype and send it to parsing function 341 * based on the subtype value 342 */ 343static void 344ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 345{ 346 u32 ouisubtype; 347 u8 subtype; 348 349 ouisubtype = ntohl(tlv->ouisubtype); 350 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >> 351 ICE_LLDP_TLV_SUBTYPE_S); 352 switch (subtype) { 353 case ICE_IEEE_SUBTYPE_ETS_CFG: 354 ice_parse_ieee_etscfg_tlv(tlv, dcbcfg); 355 break; 356 case ICE_IEEE_SUBTYPE_ETS_REC: 357 ice_parse_ieee_etsrec_tlv(tlv, dcbcfg); 358 break; 359 case ICE_IEEE_SUBTYPE_PFC_CFG: 360 ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg); 361 break; 362 case ICE_IEEE_SUBTYPE_APP_PRI: 363 ice_parse_ieee_app_tlv(tlv, dcbcfg); 364 break; 365 default: 366 break; 367 } 368} 369 370/** 371 * ice_parse_cee_pgcfg_tlv 372 * @tlv: CEE DCBX PG CFG TLV 373 * @dcbcfg: Local store to update ETS CFG data 374 * 375 * Parses CEE DCBX PG CFG TLV 376 */ 377static void 378ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv, 379 struct ice_dcbx_cfg *dcbcfg) 380{ 381 struct ice_dcb_ets_cfg *etscfg; 382 u8 *buf = tlv->tlvinfo; 383 u16 offset = 0; 384 int i; 385 386 etscfg = &dcbcfg->etscfg; 387 388 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M) 389 etscfg->willing = 1; 390 391 etscfg->cbs = 0; 392 /* Priority Group Table (4 octets) 393 * Octets:| 1 | 2 | 3 | 4 | 394 * ----------------------------------------- 395 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 396 * ----------------------------------------- 397 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 398 * ----------------------------------------- 399 */ 400 for (i = 0; i < 4; i++) { 401 etscfg->prio_table[i * 2] = 402 ((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >> 403 ICE_CEE_PGID_PRIO_1_S); 404 etscfg->prio_table[i * 2 + 1] = 405 ((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >> 406 ICE_CEE_PGID_PRIO_0_S); 407 offset++; 408 } 409 410 /* PG Percentage Table (8 octets) 411 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 412 * --------------------------------- 413 * |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7| 414 * --------------------------------- 415 */ 416 ice_for_each_traffic_class(i) { 417 etscfg->tcbwtable[i] = buf[offset++]; 418 419 if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT) 420 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT; 421 else 422 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS; 423 } 424 425 /* Number of TCs supported (1 octet) */ 426 etscfg->maxtcs = buf[offset]; 427} 428 429/** 430 * ice_parse_cee_pfccfg_tlv 431 * @tlv: CEE DCBX PFC CFG TLV 432 * @dcbcfg: Local store to update PFC CFG data 433 * 434 * Parses CEE DCBX PFC CFG TLV 435 */ 436static void 437ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv, 438 struct ice_dcbx_cfg *dcbcfg) 439{ 440 u8 *buf = tlv->tlvinfo; 441 442 if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M) 443 dcbcfg->pfc.willing = 1; 444 445 /* ------------------------ 446 * | PFC Enable | PFC TCs | 447 * ------------------------ 448 * | 1 octet | 1 octet | 449 */ 450 dcbcfg->pfc.pfcena = buf[0]; 451 dcbcfg->pfc.pfccap = buf[1]; 452} 453 454/** 455 * ice_parse_cee_app_tlv 456 * @tlv: CEE DCBX APP TLV 457 * @dcbcfg: Local store to update APP PRIO data 458 * 459 * Parses CEE DCBX APP PRIO TLV 460 */ 461static void 462ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 463{ 464 u16 len, typelen, offset = 0; 465 struct ice_cee_app_prio *app; 466 u8 i; 467 468 typelen = ntohs(tlv->hdr.typelen); 469 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S); 470 471 dcbcfg->numapps = len / sizeof(*app); 472 if (!dcbcfg->numapps) 473 return; 474 if (dcbcfg->numapps > ICE_DCBX_MAX_APPS) 475 dcbcfg->numapps = ICE_DCBX_MAX_APPS; 476 477 for (i = 0; i < dcbcfg->numapps; i++) { 478 u8 up, selector; 479 480 app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset); 481 for (up = 0; up < ICE_MAX_USER_PRIORITY; up++) 482 if (app->prio_map & BIT(up)) 483 break; 484 485 dcbcfg->app[i].priority = up; 486 487 /* Get Selector from lower 2 bits, and convert to IEEE */ 488 selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M); 489 switch (selector) { 490 case ICE_CEE_APP_SEL_ETHTYPE: 491 dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE; 492 break; 493 case ICE_CEE_APP_SEL_TCPIP: 494 dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP; 495 break; 496 default: 497 /* Keep selector as it is for unknown types */ 498 dcbcfg->app[i].selector = selector; 499 } 500 501 dcbcfg->app[i].prot_id = ntohs(app->protocol); 502 /* Move to next app */ 503 offset += sizeof(*app); 504 } 505} 506 507/** 508 * ice_parse_cee_tlv 509 * @tlv: CEE DCBX TLV 510 * @dcbcfg: Local store to update DCBX config data 511 * 512 * Get the TLV subtype and send it to parsing function 513 * based on the subtype value 514 */ 515static void 516ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 517{ 518 struct ice_cee_feat_tlv *sub_tlv; 519 u8 subtype, feat_tlv_count = 0; 520 u16 len, tlvlen, typelen; 521 u32 ouisubtype; 522 523 ouisubtype = ntohl(tlv->ouisubtype); 524 subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >> 525 ICE_LLDP_TLV_SUBTYPE_S); 526 /* Return if not CEE DCBX */ 527 if (subtype != ICE_CEE_DCBX_TYPE) 528 return; 529 530 typelen = ntohs(tlv->typelen); 531 tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S); 532 len = sizeof(tlv->typelen) + sizeof(ouisubtype) + 533 sizeof(struct ice_cee_ctrl_tlv); 534 /* Return if no CEE DCBX Feature TLVs */ 535 if (tlvlen <= len) 536 return; 537 538 sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len); 539 while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) { 540 u16 sublen; 541 542 typelen = ntohs(sub_tlv->hdr.typelen); 543 sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S); 544 subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >> 545 ICE_LLDP_TLV_TYPE_S); 546 switch (subtype) { 547 case ICE_CEE_SUBTYPE_PG_CFG: 548 ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg); 549 break; 550 case ICE_CEE_SUBTYPE_PFC_CFG: 551 ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg); 552 break; 553 case ICE_CEE_SUBTYPE_APP_PRI: 554 ice_parse_cee_app_tlv(sub_tlv, dcbcfg); 555 break; 556 default: 557 return; /* Invalid Sub-type return */ 558 } 559 feat_tlv_count++; 560 /* Move to next sub TLV */ 561 sub_tlv = (struct ice_cee_feat_tlv *) 562 ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) + 563 sublen); 564 } 565} 566 567/** 568 * ice_parse_org_tlv 569 * @tlv: Organization specific TLV 570 * @dcbcfg: Local store to update ETS REC data 571 * 572 * Currently IEEE 802.1Qaz and CEE DCBX TLV are supported, others 573 * will be returned 574 */ 575static void 576ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 577{ 578 u32 ouisubtype; 579 u32 oui; 580 581 ouisubtype = ntohl(tlv->ouisubtype); 582 oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S); 583 switch (oui) { 584 case ICE_IEEE_8021QAZ_OUI: 585 ice_parse_ieee_tlv(tlv, dcbcfg); 586 break; 587 case ICE_CEE_DCBX_OUI: 588 ice_parse_cee_tlv(tlv, dcbcfg); 589 break; 590 default: 591 break; /* Other OUIs not supported */ 592 } 593} 594 595/** 596 * ice_lldp_to_dcb_cfg 597 * @lldpmib: LLDPDU to be parsed 598 * @dcbcfg: store for LLDPDU data 599 * 600 * Parse DCB configuration from the LLDPDU 601 */ 602static int ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg) 603{ 604 struct ice_lldp_org_tlv *tlv; 605 u16 offset = 0; 606 int ret = 0; 607 u16 typelen; 608 u16 type; 609 u16 len; 610 611 if (!lldpmib || !dcbcfg) 612 return -EINVAL; 613 614 /* set to the start of LLDPDU */ 615 lldpmib += ETH_HLEN; 616 tlv = (struct ice_lldp_org_tlv *)lldpmib; 617 while (1) { 618 typelen = ntohs(tlv->typelen); 619 type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S); 620 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S); 621 offset += sizeof(typelen) + len; 622 623 /* END TLV or beyond LLDPDU size */ 624 if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE) 625 break; 626 627 switch (type) { 628 case ICE_TLV_TYPE_ORG: 629 ice_parse_org_tlv(tlv, dcbcfg); 630 break; 631 default: 632 break; 633 } 634 635 /* Move to next TLV */ 636 tlv = (struct ice_lldp_org_tlv *) 637 ((char *)tlv + sizeof(tlv->typelen) + len); 638 } 639 640 return ret; 641} 642 643/** 644 * ice_aq_get_dcb_cfg 645 * @hw: pointer to the HW struct 646 * @mib_type: MIB type for the query 647 * @bridgetype: bridge type for the query (remote) 648 * @dcbcfg: store for LLDPDU data 649 * 650 * Query DCB configuration from the firmware 651 */ 652int 653ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype, 654 struct ice_dcbx_cfg *dcbcfg) 655{ 656 u8 *lldpmib; 657 int ret; 658 659 /* Allocate the LLDPDU */ 660 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL); 661 if (!lldpmib) 662 return -ENOMEM; 663 664 ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib, 665 ICE_LLDPDU_SIZE, NULL, NULL, NULL); 666 667 if (!ret) 668 /* Parse LLDP MIB to get DCB configuration */ 669 ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg); 670 671 devm_kfree(ice_hw_to_dev(hw), lldpmib); 672 673 return ret; 674} 675 676/** 677 * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW 678 * @hw: pointer to the HW struct 679 * @start_dcbx_agent: True if DCBX Agent needs to be started 680 * False if DCBX Agent needs to be stopped 681 * @dcbx_agent_status: FW indicates back the DCBX agent status 682 * True if DCBX Agent is active 683 * False if DCBX Agent is stopped 684 * @cd: pointer to command details structure or NULL 685 * 686 * Start/Stop the embedded dcbx Agent. In case that this wrapper function 687 * returns 0, caller will need to check if FW returns back the same 688 * value as stated in dcbx_agent_status, and react accordingly. (0x0A09) 689 */ 690int 691ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent, 692 bool *dcbx_agent_status, struct ice_sq_cd *cd) 693{ 694 struct ice_aqc_lldp_stop_start_specific_agent *cmd; 695 struct ice_aq_desc desc; 696 u16 opcode; 697 int status; 698 699 cmd = &desc.params.lldp_agent_ctrl; 700 701 opcode = ice_aqc_opc_lldp_stop_start_specific_agent; 702 703 ice_fill_dflt_direct_cmd_desc(&desc, opcode); 704 705 if (start_dcbx_agent) 706 cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX; 707 708 status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd); 709 710 *dcbx_agent_status = false; 711 712 if (!status && 713 cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX) 714 *dcbx_agent_status = true; 715 716 return status; 717} 718 719/** 720 * ice_aq_get_cee_dcb_cfg 721 * @hw: pointer to the HW struct 722 * @buff: response buffer that stores CEE operational configuration 723 * @cd: pointer to command details structure or NULL 724 * 725 * Get CEE DCBX mode operational configuration from firmware (0x0A07) 726 */ 727static int 728ice_aq_get_cee_dcb_cfg(struct ice_hw *hw, 729 struct ice_aqc_get_cee_dcb_cfg_resp *buff, 730 struct ice_sq_cd *cd) 731{ 732 struct ice_aq_desc desc; 733 734 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg); 735 736 return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd); 737} 738 739/** 740 * ice_aq_set_pfc_mode - Set PFC mode 741 * @hw: pointer to the HW struct 742 * @pfc_mode: value of PFC mode to set 743 * @cd: pointer to command details structure or NULL 744 * 745 * This AQ call configures the PFC mode to DSCP-based PFC mode or 746 * VLAN-based PFC (0x0303) 747 */ 748int ice_aq_set_pfc_mode(struct ice_hw *hw, u8 pfc_mode, struct ice_sq_cd *cd) 749{ 750 struct ice_aqc_set_query_pfc_mode *cmd; 751 struct ice_aq_desc desc; 752 int status; 753 754 if (pfc_mode > ICE_AQC_PFC_DSCP_BASED_PFC) 755 return -EINVAL; 756 757 cmd = &desc.params.set_query_pfc_mode; 758 759 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_set_pfc_mode); 760 761 cmd->pfc_mode = pfc_mode; 762 763 status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd); 764 if (status) 765 return status; 766 767 /* FW will write the PFC mode set back into cmd->pfc_mode, but if DCB is 768 * disabled, FW will write back 0 to cmd->pfc_mode. After the AQ has 769 * been executed, check if cmd->pfc_mode is what was requested. If not, 770 * return an error. 771 */ 772 if (cmd->pfc_mode != pfc_mode) 773 return -EOPNOTSUPP; 774 775 return 0; 776} 777 778/** 779 * ice_cee_to_dcb_cfg 780 * @cee_cfg: pointer to CEE configuration struct 781 * @pi: port information structure 782 * 783 * Convert CEE configuration from firmware to DCB configuration 784 */ 785static void 786ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg, 787 struct ice_port_info *pi) 788{ 789 u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status); 790 u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift, j; 791 u8 i, err, sync, oper, app_index, ice_app_sel_type; 792 u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio); 793 u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift; 794 struct ice_dcbx_cfg *cmp_dcbcfg, *dcbcfg; 795 u16 ice_app_prot_id_type; 796 797 dcbcfg = &pi->qos_cfg.local_dcbx_cfg; 798 dcbcfg->dcbx_mode = ICE_DCBX_MODE_CEE; 799 dcbcfg->tlv_status = tlv_status; 800 801 /* CEE PG data */ 802 dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc; 803 804 /* Note that the FW creates the oper_prio_tc nibbles reversed 805 * from those in the CEE Priority Group sub-TLV. 806 */ 807 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) { 808 dcbcfg->etscfg.prio_table[i * 2] = 809 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >> 810 ICE_CEE_PGID_PRIO_0_S); 811 dcbcfg->etscfg.prio_table[i * 2 + 1] = 812 ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >> 813 ICE_CEE_PGID_PRIO_1_S); 814 } 815 816 ice_for_each_traffic_class(i) { 817 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i]; 818 819 if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) { 820 /* Map it to next empty TC */ 821 dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1; 822 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT; 823 } else { 824 dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS; 825 } 826 } 827 828 /* CEE PFC data */ 829 dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en; 830 dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS; 831 832 /* CEE APP TLV data */ 833 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING) 834 cmp_dcbcfg = &pi->qos_cfg.desired_dcbx_cfg; 835 else 836 cmp_dcbcfg = &pi->qos_cfg.remote_dcbx_cfg; 837 838 app_index = 0; 839 for (i = 0; i < 3; i++) { 840 if (i == 0) { 841 /* FCoE APP */ 842 ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M; 843 ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S; 844 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M; 845 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S; 846 ice_app_sel_type = ICE_APP_SEL_ETHTYPE; 847 ice_app_prot_id_type = ETH_P_FCOE; 848 } else if (i == 1) { 849 /* iSCSI APP */ 850 ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M; 851 ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S; 852 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M; 853 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S; 854 ice_app_sel_type = ICE_APP_SEL_TCPIP; 855 ice_app_prot_id_type = ISCSI_LISTEN_PORT; 856 857 for (j = 0; j < cmp_dcbcfg->numapps; j++) { 858 u16 prot_id = cmp_dcbcfg->app[j].prot_id; 859 u8 sel = cmp_dcbcfg->app[j].selector; 860 861 if (sel == ICE_APP_SEL_TCPIP && 862 (prot_id == ISCSI_LISTEN_PORT || 863 prot_id == ICE_APP_PROT_ID_ISCSI_860)) { 864 ice_app_prot_id_type = prot_id; 865 break; 866 } 867 } 868 } else { 869 /* FIP APP */ 870 ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M; 871 ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S; 872 ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M; 873 ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S; 874 ice_app_sel_type = ICE_APP_SEL_ETHTYPE; 875 ice_app_prot_id_type = ETH_P_FIP; 876 } 877 878 status = (tlv_status & ice_aqc_cee_status_mask) >> 879 ice_aqc_cee_status_shift; 880 err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0; 881 sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0; 882 oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0; 883 /* Add FCoE/iSCSI/FIP APP if Error is False and 884 * Oper/Sync is True 885 */ 886 if (!err && sync && oper) { 887 dcbcfg->app[app_index].priority = 888 (app_prio & ice_aqc_cee_app_mask) >> 889 ice_aqc_cee_app_shift; 890 dcbcfg->app[app_index].selector = ice_app_sel_type; 891 dcbcfg->app[app_index].prot_id = ice_app_prot_id_type; 892 app_index++; 893 } 894 } 895 896 dcbcfg->numapps = app_index; 897} 898 899/** 900 * ice_get_ieee_or_cee_dcb_cfg 901 * @pi: port information structure 902 * @dcbx_mode: mode of DCBX (IEEE or CEE) 903 * 904 * Get IEEE or CEE mode DCB configuration from the Firmware 905 */ 906static int ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode) 907{ 908 struct ice_dcbx_cfg *dcbx_cfg = NULL; 909 int ret; 910 911 if (!pi) 912 return -EINVAL; 913 914 if (dcbx_mode == ICE_DCBX_MODE_IEEE) 915 dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg; 916 else if (dcbx_mode == ICE_DCBX_MODE_CEE) 917 dcbx_cfg = &pi->qos_cfg.desired_dcbx_cfg; 918 919 /* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE 920 * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE 921 */ 922 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL, 923 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg); 924 if (ret) 925 goto out; 926 927 /* Get Remote DCB Config */ 928 dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg; 929 ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE, 930 ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg); 931 /* Don't treat ENOENT as an error for Remote MIBs */ 932 if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) 933 ret = 0; 934 935out: 936 return ret; 937} 938 939/** 940 * ice_get_dcb_cfg 941 * @pi: port information structure 942 * 943 * Get DCB configuration from the Firmware 944 */ 945int ice_get_dcb_cfg(struct ice_port_info *pi) 946{ 947 struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg; 948 struct ice_dcbx_cfg *dcbx_cfg; 949 int ret; 950 951 if (!pi) 952 return -EINVAL; 953 954 ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL); 955 if (!ret) { 956 /* CEE mode */ 957 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE); 958 ice_cee_to_dcb_cfg(&cee_cfg, pi); 959 } else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) { 960 /* CEE mode not enabled try querying IEEE data */ 961 dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg; 962 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE; 963 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE); 964 } 965 966 return ret; 967} 968 969/** 970 * ice_get_dcb_cfg_from_mib_change 971 * @pi: port information structure 972 * @event: pointer to the admin queue receive event 973 * 974 * Set DCB configuration from received MIB Change event 975 */ 976void ice_get_dcb_cfg_from_mib_change(struct ice_port_info *pi, 977 struct ice_rq_event_info *event) 978{ 979 struct ice_dcbx_cfg *dcbx_cfg = &pi->qos_cfg.local_dcbx_cfg; 980 struct ice_aqc_lldp_get_mib *mib; 981 u8 change_type, dcbx_mode; 982 983 mib = (struct ice_aqc_lldp_get_mib *)&event->desc.params.raw; 984 985 change_type = FIELD_GET(ICE_AQ_LLDP_MIB_TYPE_M, mib->type); 986 if (change_type == ICE_AQ_LLDP_MIB_REMOTE) 987 dcbx_cfg = &pi->qos_cfg.remote_dcbx_cfg; 988 989 dcbx_mode = FIELD_GET(ICE_AQ_LLDP_DCBX_M, mib->type); 990 991 switch (dcbx_mode) { 992 case ICE_AQ_LLDP_DCBX_IEEE: 993 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE; 994 ice_lldp_to_dcb_cfg(event->msg_buf, dcbx_cfg); 995 break; 996 997 case ICE_AQ_LLDP_DCBX_CEE: 998 pi->qos_cfg.desired_dcbx_cfg = pi->qos_cfg.local_dcbx_cfg; 999 ice_cee_to_dcb_cfg((struct ice_aqc_get_cee_dcb_cfg_resp *) 1000 event->msg_buf, pi); 1001 break; 1002 } 1003} 1004 1005/** 1006 * ice_init_dcb 1007 * @hw: pointer to the HW struct 1008 * @enable_mib_change: enable MIB change event 1009 * 1010 * Update DCB configuration from the Firmware 1011 */ 1012int ice_init_dcb(struct ice_hw *hw, bool enable_mib_change) 1013{ 1014 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg; 1015 int ret = 0; 1016 1017 if (!hw->func_caps.common_cap.dcb) 1018 return -EOPNOTSUPP; 1019 1020 qos_cfg->is_sw_lldp = true; 1021 1022 /* Get DCBX status */ 1023 qos_cfg->dcbx_status = ice_get_dcbx_status(hw); 1024 1025 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DONE || 1026 qos_cfg->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS || 1027 qos_cfg->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) { 1028 /* Get current DCBX configuration */ 1029 ret = ice_get_dcb_cfg(hw->port_info); 1030 if (ret) 1031 return ret; 1032 qos_cfg->is_sw_lldp = false; 1033 } else if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) { 1034 return -EBUSY; 1035 } 1036 1037 /* Configure the LLDP MIB change event */ 1038 if (enable_mib_change) { 1039 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL); 1040 if (ret) 1041 qos_cfg->is_sw_lldp = true; 1042 } 1043 1044 return ret; 1045} 1046 1047/** 1048 * ice_cfg_lldp_mib_change 1049 * @hw: pointer to the HW struct 1050 * @ena_mib: enable/disable MIB change event 1051 * 1052 * Configure (disable/enable) MIB 1053 */ 1054int ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib) 1055{ 1056 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg; 1057 int ret; 1058 1059 if (!hw->func_caps.common_cap.dcb) 1060 return -EOPNOTSUPP; 1061 1062 /* Get DCBX status */ 1063 qos_cfg->dcbx_status = ice_get_dcbx_status(hw); 1064 1065 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) 1066 return -EBUSY; 1067 1068 ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL); 1069 if (!ret) 1070 qos_cfg->is_sw_lldp = !ena_mib; 1071 1072 return ret; 1073} 1074 1075/** 1076 * ice_add_ieee_ets_common_tlv 1077 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data 1078 * @ets_cfg: Container for ice_dcb_ets_cfg data 1079 * 1080 * Populate the TLV buffer with ice_dcb_ets_cfg data 1081 */ 1082static void 1083ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg) 1084{ 1085 u8 priority0, priority1; 1086 u8 offset = 0; 1087 int i; 1088 1089 /* Priority Assignment Table (4 octets) 1090 * Octets:| 1 | 2 | 3 | 4 | 1091 * ----------------------------------------- 1092 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 1093 * ----------------------------------------- 1094 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 1095 * ----------------------------------------- 1096 */ 1097 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) { 1098 priority0 = ets_cfg->prio_table[i * 2] & 0xF; 1099 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF; 1100 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1; 1101 offset++; 1102 } 1103 1104 /* TC Bandwidth Table (8 octets) 1105 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1106 * --------------------------------- 1107 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 1108 * --------------------------------- 1109 * 1110 * TSA Assignment Table (8 octets) 1111 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1112 * --------------------------------- 1113 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 1114 * --------------------------------- 1115 */ 1116 ice_for_each_traffic_class(i) { 1117 buf[offset] = ets_cfg->tcbwtable[i]; 1118 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i]; 1119 offset++; 1120 } 1121} 1122 1123/** 1124 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format 1125 * @tlv: Fill the ETS config data in IEEE format 1126 * @dcbcfg: Local store which holds the DCB Config 1127 * 1128 * Prepare IEEE 802.1Qaz ETS CFG TLV 1129 */ 1130static void 1131ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1132{ 1133 struct ice_dcb_ets_cfg *etscfg; 1134 u8 *buf = tlv->tlvinfo; 1135 u8 maxtcwilling = 0; 1136 u32 ouisubtype; 1137 u16 typelen; 1138 1139 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1140 ICE_IEEE_ETS_TLV_LEN); 1141 tlv->typelen = htons(typelen); 1142 1143 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1144 ICE_IEEE_SUBTYPE_ETS_CFG); 1145 tlv->ouisubtype = htonl(ouisubtype); 1146 1147 /* First Octet post subtype 1148 * -------------------------- 1149 * |will-|CBS | Re- | Max | 1150 * |ing | |served| TCs | 1151 * -------------------------- 1152 * |1bit | 1bit|3 bits|3bits| 1153 */ 1154 etscfg = &dcbcfg->etscfg; 1155 if (etscfg->willing) 1156 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S); 1157 maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M; 1158 buf[0] = maxtcwilling; 1159 1160 /* Begin adding at Priority Assignment Table (offset 1 in buf) */ 1161 ice_add_ieee_ets_common_tlv(&buf[1], etscfg); 1162} 1163 1164/** 1165 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format 1166 * @tlv: Fill ETS Recommended TLV in IEEE format 1167 * @dcbcfg: Local store which holds the DCB Config 1168 * 1169 * Prepare IEEE 802.1Qaz ETS REC TLV 1170 */ 1171static void 1172ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv, 1173 struct ice_dcbx_cfg *dcbcfg) 1174{ 1175 struct ice_dcb_ets_cfg *etsrec; 1176 u8 *buf = tlv->tlvinfo; 1177 u32 ouisubtype; 1178 u16 typelen; 1179 1180 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1181 ICE_IEEE_ETS_TLV_LEN); 1182 tlv->typelen = htons(typelen); 1183 1184 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1185 ICE_IEEE_SUBTYPE_ETS_REC); 1186 tlv->ouisubtype = htonl(ouisubtype); 1187 1188 etsrec = &dcbcfg->etsrec; 1189 1190 /* First Octet is reserved */ 1191 /* Begin adding at Priority Assignment Table (offset 1 in buf) */ 1192 ice_add_ieee_ets_common_tlv(&buf[1], etsrec); 1193} 1194 1195/** 1196 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format 1197 * @tlv: Fill PFC TLV in IEEE format 1198 * @dcbcfg: Local store which holds the PFC CFG data 1199 * 1200 * Prepare IEEE 802.1Qaz PFC CFG TLV 1201 */ 1202static void 1203ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1204{ 1205 u8 *buf = tlv->tlvinfo; 1206 u32 ouisubtype; 1207 u16 typelen; 1208 1209 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1210 ICE_IEEE_PFC_TLV_LEN); 1211 tlv->typelen = htons(typelen); 1212 1213 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1214 ICE_IEEE_SUBTYPE_PFC_CFG); 1215 tlv->ouisubtype = htonl(ouisubtype); 1216 1217 /* ---------------------------------------- 1218 * |will-|MBC | Re- | PFC | PFC Enable | 1219 * |ing | |served| cap | | 1220 * ----------------------------------------- 1221 * |1bit | 1bit|2 bits|4bits| 1 octet | 1222 */ 1223 if (dcbcfg->pfc.willing) 1224 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S); 1225 1226 if (dcbcfg->pfc.mbc) 1227 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S); 1228 1229 buf[0] |= dcbcfg->pfc.pfccap & 0xF; 1230 buf[1] = dcbcfg->pfc.pfcena; 1231} 1232 1233/** 1234 * ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format 1235 * @tlv: Fill APP TLV in IEEE format 1236 * @dcbcfg: Local store which holds the APP CFG data 1237 * 1238 * Prepare IEEE 802.1Qaz APP CFG TLV 1239 */ 1240static void 1241ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv, 1242 struct ice_dcbx_cfg *dcbcfg) 1243{ 1244 u16 typelen, len, offset = 0; 1245 u8 priority, selector, i = 0; 1246 u8 *buf = tlv->tlvinfo; 1247 u32 ouisubtype; 1248 1249 /* No APP TLVs then just return */ 1250 if (dcbcfg->numapps == 0) 1251 return; 1252 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1253 ICE_IEEE_SUBTYPE_APP_PRI); 1254 tlv->ouisubtype = htonl(ouisubtype); 1255 1256 /* Move offset to App Priority Table */ 1257 offset++; 1258 /* Application Priority Table (3 octets) 1259 * Octets:| 1 | 2 | 3 | 1260 * ----------------------------------------- 1261 * |Priority|Rsrvd| Sel | Protocol ID | 1262 * ----------------------------------------- 1263 * Bits:|23 21|20 19|18 16|15 0| 1264 * ----------------------------------------- 1265 */ 1266 while (i < dcbcfg->numapps) { 1267 priority = dcbcfg->app[i].priority & 0x7; 1268 selector = dcbcfg->app[i].selector & 0x7; 1269 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector; 1270 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF; 1271 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF; 1272 /* Move to next app */ 1273 offset += 3; 1274 i++; 1275 if (i >= ICE_DCBX_MAX_APPS) 1276 break; 1277 } 1278 /* len includes size of ouisubtype + 1 reserved + 3*numapps */ 1279 len = sizeof(tlv->ouisubtype) + 1 + (i * 3); 1280 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF)); 1281 tlv->typelen = htons(typelen); 1282} 1283 1284/** 1285 * ice_add_dscp_up_tlv - Prepare DSCP to UP TLV 1286 * @tlv: location to build the TLV data 1287 * @dcbcfg: location of data to convert to TLV 1288 */ 1289static void 1290ice_add_dscp_up_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1291{ 1292 u8 *buf = tlv->tlvinfo; 1293 u32 ouisubtype; 1294 u16 typelen; 1295 int i; 1296 1297 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1298 ICE_DSCP_UP_TLV_LEN); 1299 tlv->typelen = htons(typelen); 1300 1301 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1302 ICE_DSCP_SUBTYPE_DSCP2UP); 1303 tlv->ouisubtype = htonl(ouisubtype); 1304 1305 /* bytes 0 - 63 - IPv4 DSCP2UP LUT */ 1306 for (i = 0; i < ICE_DSCP_NUM_VAL; i++) { 1307 /* IPv4 mapping */ 1308 buf[i] = dcbcfg->dscp_map[i]; 1309 /* IPv6 mapping */ 1310 buf[i + ICE_DSCP_IPV6_OFFSET] = dcbcfg->dscp_map[i]; 1311 } 1312 1313 /* byte 64 - IPv4 untagged traffic */ 1314 buf[i] = 0; 1315 1316 /* byte 144 - IPv6 untagged traffic */ 1317 buf[i + ICE_DSCP_IPV6_OFFSET] = 0; 1318} 1319 1320#define ICE_BYTES_PER_TC 8 1321/** 1322 * ice_add_dscp_enf_tlv - Prepare DSCP Enforcement TLV 1323 * @tlv: location to build the TLV data 1324 */ 1325static void 1326ice_add_dscp_enf_tlv(struct ice_lldp_org_tlv *tlv) 1327{ 1328 u8 *buf = tlv->tlvinfo; 1329 u32 ouisubtype; 1330 u16 typelen; 1331 1332 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1333 ICE_DSCP_ENF_TLV_LEN); 1334 tlv->typelen = htons(typelen); 1335 1336 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1337 ICE_DSCP_SUBTYPE_ENFORCE); 1338 tlv->ouisubtype = htonl(ouisubtype); 1339 1340 /* Allow all DSCP values to be valid for all TC's (IPv4 and IPv6) */ 1341 memset(buf, 0, 2 * (ICE_MAX_TRAFFIC_CLASS * ICE_BYTES_PER_TC)); 1342} 1343 1344/** 1345 * ice_add_dscp_tc_bw_tlv - Prepare DSCP BW for TC TLV 1346 * @tlv: location to build the TLV data 1347 * @dcbcfg: location of the data to convert to TLV 1348 */ 1349static void 1350ice_add_dscp_tc_bw_tlv(struct ice_lldp_org_tlv *tlv, 1351 struct ice_dcbx_cfg *dcbcfg) 1352{ 1353 struct ice_dcb_ets_cfg *etscfg; 1354 u8 *buf = tlv->tlvinfo; 1355 u32 ouisubtype; 1356 u8 offset = 0; 1357 u16 typelen; 1358 int i; 1359 1360 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1361 ICE_DSCP_TC_BW_TLV_LEN); 1362 tlv->typelen = htons(typelen); 1363 1364 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1365 ICE_DSCP_SUBTYPE_TCBW); 1366 tlv->ouisubtype = htonl(ouisubtype); 1367 1368 /* First Octect after subtype 1369 * ---------------------------- 1370 * | RSV | CBS | RSV | Max TCs | 1371 * | 1b | 1b | 3b | 3b | 1372 * ---------------------------- 1373 */ 1374 etscfg = &dcbcfg->etscfg; 1375 buf[0] = etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M; 1376 1377 /* bytes 1 - 4 reserved */ 1378 offset = 5; 1379 1380 /* TC BW table 1381 * bytes 0 - 7 for TC 0 - 7 1382 * 1383 * TSA Assignment table 1384 * bytes 8 - 15 for TC 0 - 7 1385 */ 1386 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) { 1387 buf[offset] = etscfg->tcbwtable[i]; 1388 buf[offset + ICE_MAX_TRAFFIC_CLASS] = etscfg->tsatable[i]; 1389 offset++; 1390 } 1391} 1392 1393/** 1394 * ice_add_dscp_pfc_tlv - Prepare DSCP PFC TLV 1395 * @tlv: Fill PFC TLV in IEEE format 1396 * @dcbcfg: Local store which holds the PFC CFG data 1397 */ 1398static void 1399ice_add_dscp_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1400{ 1401 u8 *buf = tlv->tlvinfo; 1402 u32 ouisubtype; 1403 u16 typelen; 1404 1405 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1406 ICE_DSCP_PFC_TLV_LEN); 1407 tlv->typelen = htons(typelen); 1408 1409 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1410 ICE_DSCP_SUBTYPE_PFC); 1411 tlv->ouisubtype = htonl(ouisubtype); 1412 1413 buf[0] = dcbcfg->pfc.pfccap & 0xF; 1414 buf[1] = dcbcfg->pfc.pfcena; 1415} 1416 1417/** 1418 * ice_add_dcb_tlv - Add all IEEE or DSCP TLVs 1419 * @tlv: Fill TLV data in IEEE format 1420 * @dcbcfg: Local store which holds the DCB Config 1421 * @tlvid: Type of IEEE TLV 1422 * 1423 * Add tlv information 1424 */ 1425static void 1426ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg, 1427 u16 tlvid) 1428{ 1429 if (dcbcfg->pfc_mode == ICE_QOS_MODE_VLAN) { 1430 switch (tlvid) { 1431 case ICE_IEEE_TLV_ID_ETS_CFG: 1432 ice_add_ieee_ets_tlv(tlv, dcbcfg); 1433 break; 1434 case ICE_IEEE_TLV_ID_ETS_REC: 1435 ice_add_ieee_etsrec_tlv(tlv, dcbcfg); 1436 break; 1437 case ICE_IEEE_TLV_ID_PFC_CFG: 1438 ice_add_ieee_pfc_tlv(tlv, dcbcfg); 1439 break; 1440 case ICE_IEEE_TLV_ID_APP_PRI: 1441 ice_add_ieee_app_pri_tlv(tlv, dcbcfg); 1442 break; 1443 default: 1444 break; 1445 } 1446 } else { 1447 /* pfc_mode == ICE_QOS_MODE_DSCP */ 1448 switch (tlvid) { 1449 case ICE_TLV_ID_DSCP_UP: 1450 ice_add_dscp_up_tlv(tlv, dcbcfg); 1451 break; 1452 case ICE_TLV_ID_DSCP_ENF: 1453 ice_add_dscp_enf_tlv(tlv); 1454 break; 1455 case ICE_TLV_ID_DSCP_TC_BW: 1456 ice_add_dscp_tc_bw_tlv(tlv, dcbcfg); 1457 break; 1458 case ICE_TLV_ID_DSCP_TO_PFC: 1459 ice_add_dscp_pfc_tlv(tlv, dcbcfg); 1460 break; 1461 default: 1462 break; 1463 } 1464 } 1465} 1466 1467/** 1468 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format 1469 * @lldpmib: pointer to the HW struct 1470 * @miblen: length of LLDP MIB 1471 * @dcbcfg: Local store which holds the DCB Config 1472 * 1473 * Convert the DCB configuration to MIB format 1474 */ 1475static void 1476ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg) 1477{ 1478 u16 len, offset = 0, tlvid = ICE_TLV_ID_START; 1479 struct ice_lldp_org_tlv *tlv; 1480 u16 typelen; 1481 1482 tlv = (struct ice_lldp_org_tlv *)lldpmib; 1483 while (1) { 1484 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++); 1485 typelen = ntohs(tlv->typelen); 1486 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S; 1487 if (len) 1488 offset += len + 2; 1489 /* END TLV or beyond LLDPDU size */ 1490 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU || 1491 offset > ICE_LLDPDU_SIZE) 1492 break; 1493 /* Move to next TLV */ 1494 if (len) 1495 tlv = (struct ice_lldp_org_tlv *) 1496 ((char *)tlv + sizeof(tlv->typelen) + len); 1497 } 1498 *miblen = offset; 1499} 1500 1501/** 1502 * ice_set_dcb_cfg - Set the local LLDP MIB to FW 1503 * @pi: port information structure 1504 * 1505 * Set DCB configuration to the Firmware 1506 */ 1507int ice_set_dcb_cfg(struct ice_port_info *pi) 1508{ 1509 u8 mib_type, *lldpmib = NULL; 1510 struct ice_dcbx_cfg *dcbcfg; 1511 struct ice_hw *hw; 1512 u16 miblen; 1513 int ret; 1514 1515 if (!pi) 1516 return -EINVAL; 1517 1518 hw = pi->hw; 1519 1520 /* update the HW local config */ 1521 dcbcfg = &pi->qos_cfg.local_dcbx_cfg; 1522 /* Allocate the LLDPDU */ 1523 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL); 1524 if (!lldpmib) 1525 return -ENOMEM; 1526 1527 mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB; 1528 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING) 1529 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING; 1530 1531 ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg); 1532 ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen, 1533 NULL); 1534 1535 devm_kfree(ice_hw_to_dev(hw), lldpmib); 1536 1537 return ret; 1538} 1539 1540/** 1541 * ice_aq_query_port_ets - query port ETS configuration 1542 * @pi: port information structure 1543 * @buf: pointer to buffer 1544 * @buf_size: buffer size in bytes 1545 * @cd: pointer to command details structure or NULL 1546 * 1547 * query current port ETS configuration 1548 */ 1549static int 1550ice_aq_query_port_ets(struct ice_port_info *pi, 1551 struct ice_aqc_port_ets_elem *buf, u16 buf_size, 1552 struct ice_sq_cd *cd) 1553{ 1554 struct ice_aqc_query_port_ets *cmd; 1555 struct ice_aq_desc desc; 1556 int status; 1557 1558 if (!pi) 1559 return -EINVAL; 1560 cmd = &desc.params.port_ets; 1561 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets); 1562 cmd->port_teid = pi->root->info.node_teid; 1563 1564 status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd); 1565 return status; 1566} 1567 1568/** 1569 * ice_update_port_tc_tree_cfg - update TC tree configuration 1570 * @pi: port information structure 1571 * @buf: pointer to buffer 1572 * 1573 * update the SW DB with the new TC changes 1574 */ 1575static int 1576ice_update_port_tc_tree_cfg(struct ice_port_info *pi, 1577 struct ice_aqc_port_ets_elem *buf) 1578{ 1579 struct ice_sched_node *node, *tc_node; 1580 struct ice_aqc_txsched_elem_data elem; 1581 u32 teid1, teid2; 1582 int status = 0; 1583 u8 i, j; 1584 1585 if (!pi) 1586 return -EINVAL; 1587 /* suspend the missing TC nodes */ 1588 for (i = 0; i < pi->root->num_children; i++) { 1589 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid); 1590 ice_for_each_traffic_class(j) { 1591 teid2 = le32_to_cpu(buf->tc_node_teid[j]); 1592 if (teid1 == teid2) 1593 break; 1594 } 1595 if (j < ICE_MAX_TRAFFIC_CLASS) 1596 continue; 1597 /* TC is missing */ 1598 pi->root->children[i]->in_use = false; 1599 } 1600 /* add the new TC nodes */ 1601 ice_for_each_traffic_class(j) { 1602 teid2 = le32_to_cpu(buf->tc_node_teid[j]); 1603 if (teid2 == ICE_INVAL_TEID) 1604 continue; 1605 /* Is it already present in the tree ? */ 1606 for (i = 0; i < pi->root->num_children; i++) { 1607 tc_node = pi->root->children[i]; 1608 if (!tc_node) 1609 continue; 1610 teid1 = le32_to_cpu(tc_node->info.node_teid); 1611 if (teid1 == teid2) { 1612 tc_node->tc_num = j; 1613 tc_node->in_use = true; 1614 break; 1615 } 1616 } 1617 if (i < pi->root->num_children) 1618 continue; 1619 /* new TC */ 1620 status = ice_sched_query_elem(pi->hw, teid2, &elem); 1621 if (!status) 1622 status = ice_sched_add_node(pi, 1, &elem, NULL); 1623 if (status) 1624 break; 1625 /* update the TC number */ 1626 node = ice_sched_find_node_by_teid(pi->root, teid2); 1627 if (node) 1628 node->tc_num = j; 1629 } 1630 return status; 1631} 1632 1633/** 1634 * ice_query_port_ets - query port ETS configuration 1635 * @pi: port information structure 1636 * @buf: pointer to buffer 1637 * @buf_size: buffer size in bytes 1638 * @cd: pointer to command details structure or NULL 1639 * 1640 * query current port ETS configuration and update the 1641 * SW DB with the TC changes 1642 */ 1643int 1644ice_query_port_ets(struct ice_port_info *pi, 1645 struct ice_aqc_port_ets_elem *buf, u16 buf_size, 1646 struct ice_sq_cd *cd) 1647{ 1648 int status; 1649 1650 mutex_lock(&pi->sched_lock); 1651 status = ice_aq_query_port_ets(pi, buf, buf_size, cd); 1652 if (!status) 1653 status = ice_update_port_tc_tree_cfg(pi, buf); 1654 mutex_unlock(&pi->sched_lock); 1655 return status; 1656} 1657