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