1 // SPDX-License-Identifier: GPL-2.0 2 /* Copyright (c) 2019, Intel Corporation. */ 3 4 #include "ice_common.h" 5 #include "ice_sched.h" 6 #include "ice_dcb.h" 7 8 /** 9 * ice_aq_get_lldp_mib 10 * @hw: pointer to the HW struct 11 * @bridge_type: type of bridge requested 12 * @mib_type: Local, Remote or both Local and Remote MIBs 13 * @buf: pointer to the caller-supplied buffer to store the MIB block 14 * @buf_size: size of the buffer (in bytes) 15 * @local_len: length of the returned Local LLDP MIB 16 * @remote_len: length of the returned Remote LLDP MIB 17 * @cd: pointer to command details structure or NULL 18 * 19 * Requests the complete LLDP MIB (entire packet). (0x0A00) 20 */ 21 static int 22 ice_aq_get_lldp_mib(struct ice_hw *hw, u8 bridge_type, u8 mib_type, void *buf, 23 u16 buf_size, u16 *local_len, u16 *remote_len, 24 struct ice_sq_cd *cd) 25 { 26 struct ice_aqc_lldp_get_mib *cmd; 27 struct ice_aq_desc desc; 28 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 */ 63 static int 64 ice_aq_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_update, 65 struct ice_sq_cd *cd) 66 { 67 struct ice_aqc_lldp_set_mib_change *cmd; 68 struct ice_aq_desc desc; 69 70 cmd = &desc.params.lldp_set_event; 71 72 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_mib_change); 73 74 if (!ena_update) 75 cmd->command |= ICE_AQ_LLDP_MIB_UPDATE_DIS; 76 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 */ 94 int 95 ice_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 */ 122 int 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 */ 145 static 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 */ 161 static void 162 ice_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 */ 210 static void 211 ice_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 */ 242 static void 243 ice_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 */ 259 static void 260 ice_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 */ 286 static void 287 ice_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 */ 343 static void 344 ice_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 */ 377 static void 378 ice_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 */ 436 static void 437 ice_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 */ 461 static void 462 ice_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 */ 515 static void 516 ice_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 only IEEE 802.1Qaz TLV is supported, all others 573 * will be returned 574 */ 575 static void 576 ice_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; 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 */ 602 static 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 */ 652 int 653 ice_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 */ 690 int 691 ice_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 */ 727 static int 728 ice_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 */ 748 int 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 */ 785 static void 786 ice_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 */ 906 static 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; 934 935 out: 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 */ 945 int 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_init_dcb 971 * @hw: pointer to the HW struct 972 * @enable_mib_change: enable MIB change event 973 * 974 * Update DCB configuration from the Firmware 975 */ 976 int ice_init_dcb(struct ice_hw *hw, bool enable_mib_change) 977 { 978 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg; 979 int ret = 0; 980 981 if (!hw->func_caps.common_cap.dcb) 982 return -EOPNOTSUPP; 983 984 qos_cfg->is_sw_lldp = true; 985 986 /* Get DCBX status */ 987 qos_cfg->dcbx_status = ice_get_dcbx_status(hw); 988 989 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DONE || 990 qos_cfg->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS || 991 qos_cfg->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) { 992 /* Get current DCBX configuration */ 993 ret = ice_get_dcb_cfg(hw->port_info); 994 if (ret) 995 return ret; 996 qos_cfg->is_sw_lldp = false; 997 } else if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) { 998 return -EBUSY; 999 } 1000 1001 /* Configure the LLDP MIB change event */ 1002 if (enable_mib_change) { 1003 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL); 1004 if (ret) 1005 qos_cfg->is_sw_lldp = true; 1006 } 1007 1008 return ret; 1009 } 1010 1011 /** 1012 * ice_cfg_lldp_mib_change 1013 * @hw: pointer to the HW struct 1014 * @ena_mib: enable/disable MIB change event 1015 * 1016 * Configure (disable/enable) MIB 1017 */ 1018 int ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib) 1019 { 1020 struct ice_qos_cfg *qos_cfg = &hw->port_info->qos_cfg; 1021 int ret; 1022 1023 if (!hw->func_caps.common_cap.dcb) 1024 return -EOPNOTSUPP; 1025 1026 /* Get DCBX status */ 1027 qos_cfg->dcbx_status = ice_get_dcbx_status(hw); 1028 1029 if (qos_cfg->dcbx_status == ICE_DCBX_STATUS_DIS) 1030 return -EBUSY; 1031 1032 ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL); 1033 if (!ret) 1034 qos_cfg->is_sw_lldp = !ena_mib; 1035 1036 return ret; 1037 } 1038 1039 /** 1040 * ice_add_ieee_ets_common_tlv 1041 * @buf: Data buffer to be populated with ice_dcb_ets_cfg data 1042 * @ets_cfg: Container for ice_dcb_ets_cfg data 1043 * 1044 * Populate the TLV buffer with ice_dcb_ets_cfg data 1045 */ 1046 static void 1047 ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg) 1048 { 1049 u8 priority0, priority1; 1050 u8 offset = 0; 1051 int i; 1052 1053 /* Priority Assignment Table (4 octets) 1054 * Octets:| 1 | 2 | 3 | 4 | 1055 * ----------------------------------------- 1056 * |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7| 1057 * ----------------------------------------- 1058 * Bits:|7 4|3 0|7 4|3 0|7 4|3 0|7 4|3 0| 1059 * ----------------------------------------- 1060 */ 1061 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) { 1062 priority0 = ets_cfg->prio_table[i * 2] & 0xF; 1063 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF; 1064 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1; 1065 offset++; 1066 } 1067 1068 /* TC Bandwidth Table (8 octets) 1069 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1070 * --------------------------------- 1071 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 1072 * --------------------------------- 1073 * 1074 * TSA Assignment Table (8 octets) 1075 * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 1076 * --------------------------------- 1077 * |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7| 1078 * --------------------------------- 1079 */ 1080 ice_for_each_traffic_class(i) { 1081 buf[offset] = ets_cfg->tcbwtable[i]; 1082 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i]; 1083 offset++; 1084 } 1085 } 1086 1087 /** 1088 * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format 1089 * @tlv: Fill the ETS config data in IEEE format 1090 * @dcbcfg: Local store which holds the DCB Config 1091 * 1092 * Prepare IEEE 802.1Qaz ETS CFG TLV 1093 */ 1094 static void 1095 ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1096 { 1097 struct ice_dcb_ets_cfg *etscfg; 1098 u8 *buf = tlv->tlvinfo; 1099 u8 maxtcwilling = 0; 1100 u32 ouisubtype; 1101 u16 typelen; 1102 1103 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1104 ICE_IEEE_ETS_TLV_LEN); 1105 tlv->typelen = htons(typelen); 1106 1107 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1108 ICE_IEEE_SUBTYPE_ETS_CFG); 1109 tlv->ouisubtype = htonl(ouisubtype); 1110 1111 /* First Octet post subtype 1112 * -------------------------- 1113 * |will-|CBS | Re- | Max | 1114 * |ing | |served| TCs | 1115 * -------------------------- 1116 * |1bit | 1bit|3 bits|3bits| 1117 */ 1118 etscfg = &dcbcfg->etscfg; 1119 if (etscfg->willing) 1120 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S); 1121 maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M; 1122 buf[0] = maxtcwilling; 1123 1124 /* Begin adding at Priority Assignment Table (offset 1 in buf) */ 1125 ice_add_ieee_ets_common_tlv(&buf[1], etscfg); 1126 } 1127 1128 /** 1129 * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format 1130 * @tlv: Fill ETS Recommended TLV in IEEE format 1131 * @dcbcfg: Local store which holds the DCB Config 1132 * 1133 * Prepare IEEE 802.1Qaz ETS REC TLV 1134 */ 1135 static void 1136 ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv, 1137 struct ice_dcbx_cfg *dcbcfg) 1138 { 1139 struct ice_dcb_ets_cfg *etsrec; 1140 u8 *buf = tlv->tlvinfo; 1141 u32 ouisubtype; 1142 u16 typelen; 1143 1144 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1145 ICE_IEEE_ETS_TLV_LEN); 1146 tlv->typelen = htons(typelen); 1147 1148 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1149 ICE_IEEE_SUBTYPE_ETS_REC); 1150 tlv->ouisubtype = htonl(ouisubtype); 1151 1152 etsrec = &dcbcfg->etsrec; 1153 1154 /* First Octet is reserved */ 1155 /* Begin adding at Priority Assignment Table (offset 1 in buf) */ 1156 ice_add_ieee_ets_common_tlv(&buf[1], etsrec); 1157 } 1158 1159 /** 1160 * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format 1161 * @tlv: Fill PFC TLV in IEEE format 1162 * @dcbcfg: Local store which holds the PFC CFG data 1163 * 1164 * Prepare IEEE 802.1Qaz PFC CFG TLV 1165 */ 1166 static void 1167 ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1168 { 1169 u8 *buf = tlv->tlvinfo; 1170 u32 ouisubtype; 1171 u16 typelen; 1172 1173 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1174 ICE_IEEE_PFC_TLV_LEN); 1175 tlv->typelen = htons(typelen); 1176 1177 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1178 ICE_IEEE_SUBTYPE_PFC_CFG); 1179 tlv->ouisubtype = htonl(ouisubtype); 1180 1181 /* ---------------------------------------- 1182 * |will-|MBC | Re- | PFC | PFC Enable | 1183 * |ing | |served| cap | | 1184 * ----------------------------------------- 1185 * |1bit | 1bit|2 bits|4bits| 1 octet | 1186 */ 1187 if (dcbcfg->pfc.willing) 1188 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S); 1189 1190 if (dcbcfg->pfc.mbc) 1191 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S); 1192 1193 buf[0] |= dcbcfg->pfc.pfccap & 0xF; 1194 buf[1] = dcbcfg->pfc.pfcena; 1195 } 1196 1197 /** 1198 * ice_add_ieee_app_pri_tlv - Prepare APP TLV in IEEE format 1199 * @tlv: Fill APP TLV in IEEE format 1200 * @dcbcfg: Local store which holds the APP CFG data 1201 * 1202 * Prepare IEEE 802.1Qaz APP CFG TLV 1203 */ 1204 static void 1205 ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv, 1206 struct ice_dcbx_cfg *dcbcfg) 1207 { 1208 u16 typelen, len, offset = 0; 1209 u8 priority, selector, i = 0; 1210 u8 *buf = tlv->tlvinfo; 1211 u32 ouisubtype; 1212 1213 /* No APP TLVs then just return */ 1214 if (dcbcfg->numapps == 0) 1215 return; 1216 ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) | 1217 ICE_IEEE_SUBTYPE_APP_PRI); 1218 tlv->ouisubtype = htonl(ouisubtype); 1219 1220 /* Move offset to App Priority Table */ 1221 offset++; 1222 /* Application Priority Table (3 octets) 1223 * Octets:| 1 | 2 | 3 | 1224 * ----------------------------------------- 1225 * |Priority|Rsrvd| Sel | Protocol ID | 1226 * ----------------------------------------- 1227 * Bits:|23 21|20 19|18 16|15 0| 1228 * ----------------------------------------- 1229 */ 1230 while (i < dcbcfg->numapps) { 1231 priority = dcbcfg->app[i].priority & 0x7; 1232 selector = dcbcfg->app[i].selector & 0x7; 1233 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector; 1234 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF; 1235 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF; 1236 /* Move to next app */ 1237 offset += 3; 1238 i++; 1239 if (i >= ICE_DCBX_MAX_APPS) 1240 break; 1241 } 1242 /* len includes size of ouisubtype + 1 reserved + 3*numapps */ 1243 len = sizeof(tlv->ouisubtype) + 1 + (i * 3); 1244 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF)); 1245 tlv->typelen = htons(typelen); 1246 } 1247 1248 /** 1249 * ice_add_dscp_up_tlv - Prepare DSCP to UP TLV 1250 * @tlv: location to build the TLV data 1251 * @dcbcfg: location of data to convert to TLV 1252 */ 1253 static void 1254 ice_add_dscp_up_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1255 { 1256 u8 *buf = tlv->tlvinfo; 1257 u32 ouisubtype; 1258 u16 typelen; 1259 int i; 1260 1261 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1262 ICE_DSCP_UP_TLV_LEN); 1263 tlv->typelen = htons(typelen); 1264 1265 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1266 ICE_DSCP_SUBTYPE_DSCP2UP); 1267 tlv->ouisubtype = htonl(ouisubtype); 1268 1269 /* bytes 0 - 63 - IPv4 DSCP2UP LUT */ 1270 for (i = 0; i < ICE_DSCP_NUM_VAL; i++) { 1271 /* IPv4 mapping */ 1272 buf[i] = dcbcfg->dscp_map[i]; 1273 /* IPv6 mapping */ 1274 buf[i + ICE_DSCP_IPV6_OFFSET] = dcbcfg->dscp_map[i]; 1275 } 1276 1277 /* byte 64 - IPv4 untagged traffic */ 1278 buf[i] = 0; 1279 1280 /* byte 144 - IPv6 untagged traffic */ 1281 buf[i + ICE_DSCP_IPV6_OFFSET] = 0; 1282 } 1283 1284 #define ICE_BYTES_PER_TC 8 1285 /** 1286 * ice_add_dscp_enf_tlv - Prepare DSCP Enforcement TLV 1287 * @tlv: location to build the TLV data 1288 */ 1289 static void 1290 ice_add_dscp_enf_tlv(struct ice_lldp_org_tlv *tlv) 1291 { 1292 u8 *buf = tlv->tlvinfo; 1293 u32 ouisubtype; 1294 u16 typelen; 1295 1296 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1297 ICE_DSCP_ENF_TLV_LEN); 1298 tlv->typelen = htons(typelen); 1299 1300 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1301 ICE_DSCP_SUBTYPE_ENFORCE); 1302 tlv->ouisubtype = htonl(ouisubtype); 1303 1304 /* Allow all DSCP values to be valid for all TC's (IPv4 and IPv6) */ 1305 memset(buf, 0, 2 * (ICE_MAX_TRAFFIC_CLASS * ICE_BYTES_PER_TC)); 1306 } 1307 1308 /** 1309 * ice_add_dscp_tc_bw_tlv - Prepare DSCP BW for TC TLV 1310 * @tlv: location to build the TLV data 1311 * @dcbcfg: location of the data to convert to TLV 1312 */ 1313 static void 1314 ice_add_dscp_tc_bw_tlv(struct ice_lldp_org_tlv *tlv, 1315 struct ice_dcbx_cfg *dcbcfg) 1316 { 1317 struct ice_dcb_ets_cfg *etscfg; 1318 u8 *buf = tlv->tlvinfo; 1319 u32 ouisubtype; 1320 u8 offset = 0; 1321 u16 typelen; 1322 int i; 1323 1324 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1325 ICE_DSCP_TC_BW_TLV_LEN); 1326 tlv->typelen = htons(typelen); 1327 1328 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1329 ICE_DSCP_SUBTYPE_TCBW); 1330 tlv->ouisubtype = htonl(ouisubtype); 1331 1332 /* First Octect after subtype 1333 * ---------------------------- 1334 * | RSV | CBS | RSV | Max TCs | 1335 * | 1b | 1b | 3b | 3b | 1336 * ---------------------------- 1337 */ 1338 etscfg = &dcbcfg->etscfg; 1339 buf[0] = etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M; 1340 1341 /* bytes 1 - 4 reserved */ 1342 offset = 5; 1343 1344 /* TC BW table 1345 * bytes 0 - 7 for TC 0 - 7 1346 * 1347 * TSA Assignment table 1348 * bytes 8 - 15 for TC 0 - 7 1349 */ 1350 for (i = 0; i < ICE_MAX_TRAFFIC_CLASS; i++) { 1351 buf[offset] = etscfg->tcbwtable[i]; 1352 buf[offset + ICE_MAX_TRAFFIC_CLASS] = etscfg->tsatable[i]; 1353 offset++; 1354 } 1355 } 1356 1357 /** 1358 * ice_add_dscp_pfc_tlv - Prepare DSCP PFC TLV 1359 * @tlv: Fill PFC TLV in IEEE format 1360 * @dcbcfg: Local store which holds the PFC CFG data 1361 */ 1362 static void 1363 ice_add_dscp_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg) 1364 { 1365 u8 *buf = tlv->tlvinfo; 1366 u32 ouisubtype; 1367 u16 typelen; 1368 1369 typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | 1370 ICE_DSCP_PFC_TLV_LEN); 1371 tlv->typelen = htons(typelen); 1372 1373 ouisubtype = (u32)((ICE_DSCP_OUI << ICE_LLDP_TLV_OUI_S) | 1374 ICE_DSCP_SUBTYPE_PFC); 1375 tlv->ouisubtype = htonl(ouisubtype); 1376 1377 buf[0] = dcbcfg->pfc.pfccap & 0xF; 1378 buf[1] = dcbcfg->pfc.pfcena & 0xF; 1379 } 1380 1381 /** 1382 * ice_add_dcb_tlv - Add all IEEE or DSCP TLVs 1383 * @tlv: Fill TLV data in IEEE format 1384 * @dcbcfg: Local store which holds the DCB Config 1385 * @tlvid: Type of IEEE TLV 1386 * 1387 * Add tlv information 1388 */ 1389 static void 1390 ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg, 1391 u16 tlvid) 1392 { 1393 if (dcbcfg->pfc_mode == ICE_QOS_MODE_VLAN) { 1394 switch (tlvid) { 1395 case ICE_IEEE_TLV_ID_ETS_CFG: 1396 ice_add_ieee_ets_tlv(tlv, dcbcfg); 1397 break; 1398 case ICE_IEEE_TLV_ID_ETS_REC: 1399 ice_add_ieee_etsrec_tlv(tlv, dcbcfg); 1400 break; 1401 case ICE_IEEE_TLV_ID_PFC_CFG: 1402 ice_add_ieee_pfc_tlv(tlv, dcbcfg); 1403 break; 1404 case ICE_IEEE_TLV_ID_APP_PRI: 1405 ice_add_ieee_app_pri_tlv(tlv, dcbcfg); 1406 break; 1407 default: 1408 break; 1409 } 1410 } else { 1411 /* pfc_mode == ICE_QOS_MODE_DSCP */ 1412 switch (tlvid) { 1413 case ICE_TLV_ID_DSCP_UP: 1414 ice_add_dscp_up_tlv(tlv, dcbcfg); 1415 break; 1416 case ICE_TLV_ID_DSCP_ENF: 1417 ice_add_dscp_enf_tlv(tlv); 1418 break; 1419 case ICE_TLV_ID_DSCP_TC_BW: 1420 ice_add_dscp_tc_bw_tlv(tlv, dcbcfg); 1421 break; 1422 case ICE_TLV_ID_DSCP_TO_PFC: 1423 ice_add_dscp_pfc_tlv(tlv, dcbcfg); 1424 break; 1425 default: 1426 break; 1427 } 1428 } 1429 } 1430 1431 /** 1432 * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format 1433 * @lldpmib: pointer to the HW struct 1434 * @miblen: length of LLDP MIB 1435 * @dcbcfg: Local store which holds the DCB Config 1436 * 1437 * Convert the DCB configuration to MIB format 1438 */ 1439 static void 1440 ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg) 1441 { 1442 u16 len, offset = 0, tlvid = ICE_TLV_ID_START; 1443 struct ice_lldp_org_tlv *tlv; 1444 u16 typelen; 1445 1446 tlv = (struct ice_lldp_org_tlv *)lldpmib; 1447 while (1) { 1448 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++); 1449 typelen = ntohs(tlv->typelen); 1450 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S; 1451 if (len) 1452 offset += len + 2; 1453 /* END TLV or beyond LLDPDU size */ 1454 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU || 1455 offset > ICE_LLDPDU_SIZE) 1456 break; 1457 /* Move to next TLV */ 1458 if (len) 1459 tlv = (struct ice_lldp_org_tlv *) 1460 ((char *)tlv + sizeof(tlv->typelen) + len); 1461 } 1462 *miblen = offset; 1463 } 1464 1465 /** 1466 * ice_set_dcb_cfg - Set the local LLDP MIB to FW 1467 * @pi: port information structure 1468 * 1469 * Set DCB configuration to the Firmware 1470 */ 1471 int ice_set_dcb_cfg(struct ice_port_info *pi) 1472 { 1473 u8 mib_type, *lldpmib = NULL; 1474 struct ice_dcbx_cfg *dcbcfg; 1475 struct ice_hw *hw; 1476 u16 miblen; 1477 int ret; 1478 1479 if (!pi) 1480 return -EINVAL; 1481 1482 hw = pi->hw; 1483 1484 /* update the HW local config */ 1485 dcbcfg = &pi->qos_cfg.local_dcbx_cfg; 1486 /* Allocate the LLDPDU */ 1487 lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL); 1488 if (!lldpmib) 1489 return -ENOMEM; 1490 1491 mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB; 1492 if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING) 1493 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING; 1494 1495 ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg); 1496 ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen, 1497 NULL); 1498 1499 devm_kfree(ice_hw_to_dev(hw), lldpmib); 1500 1501 return ret; 1502 } 1503 1504 /** 1505 * ice_aq_query_port_ets - query port ETS configuration 1506 * @pi: port information structure 1507 * @buf: pointer to buffer 1508 * @buf_size: buffer size in bytes 1509 * @cd: pointer to command details structure or NULL 1510 * 1511 * query current port ETS configuration 1512 */ 1513 static int 1514 ice_aq_query_port_ets(struct ice_port_info *pi, 1515 struct ice_aqc_port_ets_elem *buf, u16 buf_size, 1516 struct ice_sq_cd *cd) 1517 { 1518 struct ice_aqc_query_port_ets *cmd; 1519 struct ice_aq_desc desc; 1520 int status; 1521 1522 if (!pi) 1523 return -EINVAL; 1524 cmd = &desc.params.port_ets; 1525 ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets); 1526 cmd->port_teid = pi->root->info.node_teid; 1527 1528 status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd); 1529 return status; 1530 } 1531 1532 /** 1533 * ice_update_port_tc_tree_cfg - update TC tree configuration 1534 * @pi: port information structure 1535 * @buf: pointer to buffer 1536 * 1537 * update the SW DB with the new TC changes 1538 */ 1539 static int 1540 ice_update_port_tc_tree_cfg(struct ice_port_info *pi, 1541 struct ice_aqc_port_ets_elem *buf) 1542 { 1543 struct ice_sched_node *node, *tc_node; 1544 struct ice_aqc_txsched_elem_data elem; 1545 u32 teid1, teid2; 1546 int status = 0; 1547 u8 i, j; 1548 1549 if (!pi) 1550 return -EINVAL; 1551 /* suspend the missing TC nodes */ 1552 for (i = 0; i < pi->root->num_children; i++) { 1553 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid); 1554 ice_for_each_traffic_class(j) { 1555 teid2 = le32_to_cpu(buf->tc_node_teid[j]); 1556 if (teid1 == teid2) 1557 break; 1558 } 1559 if (j < ICE_MAX_TRAFFIC_CLASS) 1560 continue; 1561 /* TC is missing */ 1562 pi->root->children[i]->in_use = false; 1563 } 1564 /* add the new TC nodes */ 1565 ice_for_each_traffic_class(j) { 1566 teid2 = le32_to_cpu(buf->tc_node_teid[j]); 1567 if (teid2 == ICE_INVAL_TEID) 1568 continue; 1569 /* Is it already present in the tree ? */ 1570 for (i = 0; i < pi->root->num_children; i++) { 1571 tc_node = pi->root->children[i]; 1572 if (!tc_node) 1573 continue; 1574 teid1 = le32_to_cpu(tc_node->info.node_teid); 1575 if (teid1 == teid2) { 1576 tc_node->tc_num = j; 1577 tc_node->in_use = true; 1578 break; 1579 } 1580 } 1581 if (i < pi->root->num_children) 1582 continue; 1583 /* new TC */ 1584 status = ice_sched_query_elem(pi->hw, teid2, &elem); 1585 if (!status) 1586 status = ice_sched_add_node(pi, 1, &elem, NULL); 1587 if (status) 1588 break; 1589 /* update the TC number */ 1590 node = ice_sched_find_node_by_teid(pi->root, teid2); 1591 if (node) 1592 node->tc_num = j; 1593 } 1594 return status; 1595 } 1596 1597 /** 1598 * ice_query_port_ets - query port ETS configuration 1599 * @pi: port information structure 1600 * @buf: pointer to buffer 1601 * @buf_size: buffer size in bytes 1602 * @cd: pointer to command details structure or NULL 1603 * 1604 * query current port ETS configuration and update the 1605 * SW DB with the TC changes 1606 */ 1607 int 1608 ice_query_port_ets(struct ice_port_info *pi, 1609 struct ice_aqc_port_ets_elem *buf, u16 buf_size, 1610 struct ice_sq_cd *cd) 1611 { 1612 int status; 1613 1614 mutex_lock(&pi->sched_lock); 1615 status = ice_aq_query_port_ets(pi, buf, buf_size, cd); 1616 if (!status) 1617 status = ice_update_port_tc_tree_cfg(pi, buf); 1618 mutex_unlock(&pi->sched_lock); 1619 return status; 1620 } 1621