drivers/net/ethernet/intel/ice/ice

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This source file includes following definitions.
ice_aq_get_lldp_mib
ice_aq_cfg_lldp_mib_change
ice_aq_stop_lldp
ice_aq_start_lldp
ice_aq_set_lldp_mib
ice_get_dcbx_status
ice_parse_ieee_ets_common_tlv
ice_parse_ieee_etscfg_tlv
ice_parse_ieee_etsrec_tlv
ice_parse_ieee_pfccfg_tlv
ice_parse_ieee_app_tlv
ice_parse_ieee_tlv
ice_parse_cee_pgcfg_tlv
ice_parse_cee_pfccfg_tlv
ice_parse_cee_app_tlv
ice_parse_cee_tlv
ice_parse_org_tlv
ice_lldp_to_dcb_cfg
ice_aq_get_dcb_cfg
ice_aq_start_stop_dcbx
ice_aq_get_cee_dcb_cfg
ice_cee_to_dcb_cfg
ice_get_ieee_or_cee_dcb_cfg
ice_get_dcb_cfg
ice_init_dcb
ice_cfg_lldp_mib_change
ice_add_ieee_ets_common_tlv
ice_add_ieee_ets_tlv
ice_add_ieee_etsrec_tlv
ice_add_ieee_pfc_tlv
ice_add_ieee_app_pri_tlv
ice_add_dcb_tlv
ice_dcb_cfg_to_lldp
ice_set_dcb_cfg
ice_aq_query_port_ets
ice_update_port_tc_tree_cfg
ice_query_port_ets
   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_aq_set_lldp_mib - Set the LLDP MIB
 139  * @hw: pointer to the HW struct
 140  * @mib_type: Local, Remote or both Local and Remote MIBs
 141  * @buf: pointer to the caller-supplied buffer to store the MIB block
 142  * @buf_size: size of the buffer (in bytes)
 143  * @cd: pointer to command details structure or NULL
 144  *
 145  * Set the LLDP MIB. (0x0A08)
 146  */
 147 static enum ice_status
 148 ice_aq_set_lldp_mib(struct ice_hw *hw, u8 mib_type, void *buf, u16 buf_size,
 149                     struct ice_sq_cd *cd)
 150 {
 151         struct ice_aqc_lldp_set_local_mib *cmd;
 152         struct ice_aq_desc desc;
 153 
 154         cmd = &desc.params.lldp_set_mib;
 155 
 156         if (buf_size == 0 || !buf)
 157                 return ICE_ERR_PARAM;
 158 
 159         ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_lldp_set_local_mib);
 160 
 161         desc.flags |= cpu_to_le16((u16)ICE_AQ_FLAG_RD);
 162         desc.datalen = cpu_to_le16(buf_size);
 163 
 164         cmd->type = mib_type;
 165         cmd->length = cpu_to_le16(buf_size);
 166 
 167         return ice_aq_send_cmd(hw, &desc, buf, buf_size, cd);
 168 }
 169 
 170 /**
 171  * ice_get_dcbx_status
 172  * @hw: pointer to the HW struct
 173  *
 174  * Get the DCBX status from the Firmware
 175  */
 176 static u8 ice_get_dcbx_status(struct ice_hw *hw)
 177 {
 178         u32 reg;
 179 
 180         reg = rd32(hw, PRTDCB_GENS);
 181         return (u8)((reg & PRTDCB_GENS_DCBX_STATUS_M) >>
 182                     PRTDCB_GENS_DCBX_STATUS_S);
 183 }
 184 
 185 /**
 186  * ice_parse_ieee_ets_common_tlv
 187  * @buf: Data buffer to be parsed for ETS CFG/REC data
 188  * @ets_cfg: Container to store parsed data
 189  *
 190  * Parses the common data of IEEE 802.1Qaz ETS CFG/REC TLV
 191  */
 192 static void
 193 ice_parse_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
 194 {
 195         u8 offset = 0;
 196         int i;
 197 
 198         /* Priority Assignment Table (4 octets)
 199          * Octets:|    1    |    2    |    3    |    4    |
 200          *        -----------------------------------------
 201          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 202          *        -----------------------------------------
 203          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 204          *        -----------------------------------------
 205          */
 206         for (i = 0; i < 4; i++) {
 207                 ets_cfg->prio_table[i * 2] =
 208                         ((buf[offset] & ICE_IEEE_ETS_PRIO_1_M) >>
 209                          ICE_IEEE_ETS_PRIO_1_S);
 210                 ets_cfg->prio_table[i * 2 + 1] =
 211                         ((buf[offset] & ICE_IEEE_ETS_PRIO_0_M) >>
 212                          ICE_IEEE_ETS_PRIO_0_S);
 213                 offset++;
 214         }
 215 
 216         /* TC Bandwidth Table (8 octets)
 217          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 218          *        ---------------------------------
 219          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 220          *        ---------------------------------
 221          *
 222          * TSA Assignment Table (8 octets)
 223          * Octets:| 9 | 10| 11| 12| 13| 14| 15| 16|
 224          *        ---------------------------------
 225          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 226          *        ---------------------------------
 227          */
 228         ice_for_each_traffic_class(i) {
 229                 ets_cfg->tcbwtable[i] = buf[offset];
 230                 ets_cfg->tsatable[i] = buf[ICE_MAX_TRAFFIC_CLASS + offset++];
 231         }
 232 }
 233 
 234 /**
 235  * ice_parse_ieee_etscfg_tlv
 236  * @tlv: IEEE 802.1Qaz ETS CFG TLV
 237  * @dcbcfg: Local store to update ETS CFG data
 238  *
 239  * Parses IEEE 802.1Qaz ETS CFG TLV
 240  */
 241 static void
 242 ice_parse_ieee_etscfg_tlv(struct ice_lldp_org_tlv *tlv,
 243                           struct ice_dcbx_cfg *dcbcfg)
 244 {
 245         struct ice_dcb_ets_cfg *etscfg;
 246         u8 *buf = tlv->tlvinfo;
 247 
 248         /* First Octet post subtype
 249          * --------------------------
 250          * |will-|CBS  | Re-  | Max |
 251          * |ing  |     |served| TCs |
 252          * --------------------------
 253          * |1bit | 1bit|3 bits|3bits|
 254          */
 255         etscfg = &dcbcfg->etscfg;
 256         etscfg->willing = ((buf[0] & ICE_IEEE_ETS_WILLING_M) >>
 257                            ICE_IEEE_ETS_WILLING_S);
 258         etscfg->cbs = ((buf[0] & ICE_IEEE_ETS_CBS_M) >> ICE_IEEE_ETS_CBS_S);
 259         etscfg->maxtcs = ((buf[0] & ICE_IEEE_ETS_MAXTC_M) >>
 260                           ICE_IEEE_ETS_MAXTC_S);
 261 
 262         /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
 263         ice_parse_ieee_ets_common_tlv(&buf[1], etscfg);
 264 }
 265 
 266 /**
 267  * ice_parse_ieee_etsrec_tlv
 268  * @tlv: IEEE 802.1Qaz ETS REC TLV
 269  * @dcbcfg: Local store to update ETS REC data
 270  *
 271  * Parses IEEE 802.1Qaz ETS REC TLV
 272  */
 273 static void
 274 ice_parse_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
 275                           struct ice_dcbx_cfg *dcbcfg)
 276 {
 277         u8 *buf = tlv->tlvinfo;
 278 
 279         /* Begin parsing at Priority Assignment Table (offset 1 in buf) */
 280         ice_parse_ieee_ets_common_tlv(&buf[1], &dcbcfg->etsrec);
 281 }
 282 
 283 /**
 284  * ice_parse_ieee_pfccfg_tlv
 285  * @tlv: IEEE 802.1Qaz PFC CFG TLV
 286  * @dcbcfg: Local store to update PFC CFG data
 287  *
 288  * Parses IEEE 802.1Qaz PFC CFG TLV
 289  */
 290 static void
 291 ice_parse_ieee_pfccfg_tlv(struct ice_lldp_org_tlv *tlv,
 292                           struct ice_dcbx_cfg *dcbcfg)
 293 {
 294         u8 *buf = tlv->tlvinfo;
 295 
 296         /* ----------------------------------------
 297          * |will-|MBC  | Re-  | PFC |  PFC Enable  |
 298          * |ing  |     |served| cap |              |
 299          * -----------------------------------------
 300          * |1bit | 1bit|2 bits|4bits| 1 octet      |
 301          */
 302         dcbcfg->pfc.willing = ((buf[0] & ICE_IEEE_PFC_WILLING_M) >>
 303                                ICE_IEEE_PFC_WILLING_S);
 304         dcbcfg->pfc.mbc = ((buf[0] & ICE_IEEE_PFC_MBC_M) >> ICE_IEEE_PFC_MBC_S);
 305         dcbcfg->pfc.pfccap = ((buf[0] & ICE_IEEE_PFC_CAP_M) >>
 306                               ICE_IEEE_PFC_CAP_S);
 307         dcbcfg->pfc.pfcena = buf[1];
 308 }
 309 
 310 /**
 311  * ice_parse_ieee_app_tlv
 312  * @tlv: IEEE 802.1Qaz APP TLV
 313  * @dcbcfg: Local store to update APP PRIO data
 314  *
 315  * Parses IEEE 802.1Qaz APP PRIO TLV
 316  */
 317 static void
 318 ice_parse_ieee_app_tlv(struct ice_lldp_org_tlv *tlv,
 319                        struct ice_dcbx_cfg *dcbcfg)
 320 {
 321         u16 offset = 0;
 322         u16 typelen;
 323         int i = 0;
 324         u16 len;
 325         u8 *buf;
 326 
 327         typelen = ntohs(tlv->typelen);
 328         len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
 329         buf = tlv->tlvinfo;
 330 
 331         /* Removing sizeof(ouisubtype) and reserved byte from len.
 332          * Remaining len div 3 is number of APP TLVs.
 333          */
 334         len -= (sizeof(tlv->ouisubtype) + 1);
 335 
 336         /* Move offset to App Priority Table */
 337         offset++;
 338 
 339         /* Application Priority Table (3 octets)
 340          * Octets:|         1          |    2    |    3    |
 341          *        -----------------------------------------
 342          *        |Priority|Rsrvd| Sel |    Protocol ID    |
 343          *        -----------------------------------------
 344          *   Bits:|23    21|20 19|18 16|15                0|
 345          *        -----------------------------------------
 346          */
 347         while (offset < len) {
 348                 dcbcfg->app[i].priority = ((buf[offset] &
 349                                             ICE_IEEE_APP_PRIO_M) >>
 350                                            ICE_IEEE_APP_PRIO_S);
 351                 dcbcfg->app[i].selector = ((buf[offset] &
 352                                             ICE_IEEE_APP_SEL_M) >>
 353                                            ICE_IEEE_APP_SEL_S);
 354                 dcbcfg->app[i].prot_id = (buf[offset + 1] << 0x8) |
 355                         buf[offset + 2];
 356                 /* Move to next app */
 357                 offset += 3;
 358                 i++;
 359                 if (i >= ICE_DCBX_MAX_APPS)
 360                         break;
 361         }
 362 
 363         dcbcfg->numapps = i;
 364 }
 365 
 366 /**
 367  * ice_parse_ieee_tlv
 368  * @tlv: IEEE 802.1Qaz TLV
 369  * @dcbcfg: Local store to update ETS REC data
 370  *
 371  * Get the TLV subtype and send it to parsing function
 372  * based on the subtype value
 373  */
 374 static void
 375 ice_parse_ieee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 376 {
 377         u32 ouisubtype;
 378         u8 subtype;
 379 
 380         ouisubtype = ntohl(tlv->ouisubtype);
 381         subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
 382                        ICE_LLDP_TLV_SUBTYPE_S);
 383         switch (subtype) {
 384         case ICE_IEEE_SUBTYPE_ETS_CFG:
 385                 ice_parse_ieee_etscfg_tlv(tlv, dcbcfg);
 386                 break;
 387         case ICE_IEEE_SUBTYPE_ETS_REC:
 388                 ice_parse_ieee_etsrec_tlv(tlv, dcbcfg);
 389                 break;
 390         case ICE_IEEE_SUBTYPE_PFC_CFG:
 391                 ice_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
 392                 break;
 393         case ICE_IEEE_SUBTYPE_APP_PRI:
 394                 ice_parse_ieee_app_tlv(tlv, dcbcfg);
 395                 break;
 396         default:
 397                 break;
 398         }
 399 }
 400 
 401 /**
 402  * ice_parse_cee_pgcfg_tlv
 403  * @tlv: CEE DCBX PG CFG TLV
 404  * @dcbcfg: Local store to update ETS CFG data
 405  *
 406  * Parses CEE DCBX PG CFG TLV
 407  */
 408 static void
 409 ice_parse_cee_pgcfg_tlv(struct ice_cee_feat_tlv *tlv,
 410                         struct ice_dcbx_cfg *dcbcfg)
 411 {
 412         struct ice_dcb_ets_cfg *etscfg;
 413         u8 *buf = tlv->tlvinfo;
 414         u16 offset = 0;
 415         int i;
 416 
 417         etscfg = &dcbcfg->etscfg;
 418 
 419         if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
 420                 etscfg->willing = 1;
 421 
 422         etscfg->cbs = 0;
 423         /* Priority Group Table (4 octets)
 424          * Octets:|    1    |    2    |    3    |    4    |
 425          *        -----------------------------------------
 426          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 427          *        -----------------------------------------
 428          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 429          *        -----------------------------------------
 430          */
 431         for (i = 0; i < 4; i++) {
 432                 etscfg->prio_table[i * 2] =
 433                         ((buf[offset] & ICE_CEE_PGID_PRIO_1_M) >>
 434                          ICE_CEE_PGID_PRIO_1_S);
 435                 etscfg->prio_table[i * 2 + 1] =
 436                         ((buf[offset] & ICE_CEE_PGID_PRIO_0_M) >>
 437                          ICE_CEE_PGID_PRIO_0_S);
 438                 offset++;
 439         }
 440 
 441         /* PG Percentage Table (8 octets)
 442          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 443          *        ---------------------------------
 444          *        |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
 445          *        ---------------------------------
 446          */
 447         ice_for_each_traffic_class(i) {
 448                 etscfg->tcbwtable[i] = buf[offset++];
 449 
 450                 if (etscfg->prio_table[i] == ICE_CEE_PGID_STRICT)
 451                         dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
 452                 else
 453                         dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
 454         }
 455 
 456         /* Number of TCs supported (1 octet) */
 457         etscfg->maxtcs = buf[offset];
 458 }
 459 
 460 /**
 461  * ice_parse_cee_pfccfg_tlv
 462  * @tlv: CEE DCBX PFC CFG TLV
 463  * @dcbcfg: Local store to update PFC CFG data
 464  *
 465  * Parses CEE DCBX PFC CFG TLV
 466  */
 467 static void
 468 ice_parse_cee_pfccfg_tlv(struct ice_cee_feat_tlv *tlv,
 469                          struct ice_dcbx_cfg *dcbcfg)
 470 {
 471         u8 *buf = tlv->tlvinfo;
 472 
 473         if (tlv->en_will_err & ICE_CEE_FEAT_TLV_WILLING_M)
 474                 dcbcfg->pfc.willing = 1;
 475 
 476         /* ------------------------
 477          * | PFC Enable | PFC TCs |
 478          * ------------------------
 479          * | 1 octet    | 1 octet |
 480          */
 481         dcbcfg->pfc.pfcena = buf[0];
 482         dcbcfg->pfc.pfccap = buf[1];
 483 }
 484 
 485 /**
 486  * ice_parse_cee_app_tlv
 487  * @tlv: CEE DCBX APP TLV
 488  * @dcbcfg: Local store to update APP PRIO data
 489  *
 490  * Parses CEE DCBX APP PRIO TLV
 491  */
 492 static void
 493 ice_parse_cee_app_tlv(struct ice_cee_feat_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 494 {
 495         u16 len, typelen, offset = 0;
 496         struct ice_cee_app_prio *app;
 497         u8 i;
 498 
 499         typelen = ntohs(tlv->hdr.typelen);
 500         len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
 501 
 502         dcbcfg->numapps = len / sizeof(*app);
 503         if (!dcbcfg->numapps)
 504                 return;
 505         if (dcbcfg->numapps > ICE_DCBX_MAX_APPS)
 506                 dcbcfg->numapps = ICE_DCBX_MAX_APPS;
 507 
 508         for (i = 0; i < dcbcfg->numapps; i++) {
 509                 u8 up, selector;
 510 
 511                 app = (struct ice_cee_app_prio *)(tlv->tlvinfo + offset);
 512                 for (up = 0; up < ICE_MAX_USER_PRIORITY; up++)
 513                         if (app->prio_map & BIT(up))
 514                                 break;
 515 
 516                 dcbcfg->app[i].priority = up;
 517 
 518                 /* Get Selector from lower 2 bits, and convert to IEEE */
 519                 selector = (app->upper_oui_sel & ICE_CEE_APP_SELECTOR_M);
 520                 switch (selector) {
 521                 case ICE_CEE_APP_SEL_ETHTYPE:
 522                         dcbcfg->app[i].selector = ICE_APP_SEL_ETHTYPE;
 523                         break;
 524                 case ICE_CEE_APP_SEL_TCPIP:
 525                         dcbcfg->app[i].selector = ICE_APP_SEL_TCPIP;
 526                         break;
 527                 default:
 528                         /* Keep selector as it is for unknown types */
 529                         dcbcfg->app[i].selector = selector;
 530                 }
 531 
 532                 dcbcfg->app[i].prot_id = ntohs(app->protocol);
 533                 /* Move to next app */
 534                 offset += sizeof(*app);
 535         }
 536 }
 537 
 538 /**
 539  * ice_parse_cee_tlv
 540  * @tlv: CEE DCBX TLV
 541  * @dcbcfg: Local store to update DCBX config data
 542  *
 543  * Get the TLV subtype and send it to parsing function
 544  * based on the subtype value
 545  */
 546 static void
 547 ice_parse_cee_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 548 {
 549         struct ice_cee_feat_tlv *sub_tlv;
 550         u8 subtype, feat_tlv_count = 0;
 551         u16 len, tlvlen, typelen;
 552         u32 ouisubtype;
 553 
 554         ouisubtype = ntohl(tlv->ouisubtype);
 555         subtype = (u8)((ouisubtype & ICE_LLDP_TLV_SUBTYPE_M) >>
 556                        ICE_LLDP_TLV_SUBTYPE_S);
 557         /* Return if not CEE DCBX */
 558         if (subtype != ICE_CEE_DCBX_TYPE)
 559                 return;
 560 
 561         typelen = ntohs(tlv->typelen);
 562         tlvlen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
 563         len = sizeof(tlv->typelen) + sizeof(ouisubtype) +
 564                 sizeof(struct ice_cee_ctrl_tlv);
 565         /* Return if no CEE DCBX Feature TLVs */
 566         if (tlvlen <= len)
 567                 return;
 568 
 569         sub_tlv = (struct ice_cee_feat_tlv *)((char *)tlv + len);
 570         while (feat_tlv_count < ICE_CEE_MAX_FEAT_TYPE) {
 571                 u16 sublen;
 572 
 573                 typelen = ntohs(sub_tlv->hdr.typelen);
 574                 sublen = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
 575                 subtype = (u8)((typelen & ICE_LLDP_TLV_TYPE_M) >>
 576                                ICE_LLDP_TLV_TYPE_S);
 577                 switch (subtype) {
 578                 case ICE_CEE_SUBTYPE_PG_CFG:
 579                         ice_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
 580                         break;
 581                 case ICE_CEE_SUBTYPE_PFC_CFG:
 582                         ice_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
 583                         break;
 584                 case ICE_CEE_SUBTYPE_APP_PRI:
 585                         ice_parse_cee_app_tlv(sub_tlv, dcbcfg);
 586                         break;
 587                 default:
 588                         return; /* Invalid Sub-type return */
 589                 }
 590                 feat_tlv_count++;
 591                 /* Move to next sub TLV */
 592                 sub_tlv = (struct ice_cee_feat_tlv *)
 593                           ((char *)sub_tlv + sizeof(sub_tlv->hdr.typelen) +
 594                            sublen);
 595         }
 596 }
 597 
 598 /**
 599  * ice_parse_org_tlv
 600  * @tlv: Organization specific TLV
 601  * @dcbcfg: Local store to update ETS REC data
 602  *
 603  * Currently only IEEE 802.1Qaz TLV is supported, all others
 604  * will be returned
 605  */
 606 static void
 607 ice_parse_org_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
 608 {
 609         u32 ouisubtype;
 610         u32 oui;
 611 
 612         ouisubtype = ntohl(tlv->ouisubtype);
 613         oui = ((ouisubtype & ICE_LLDP_TLV_OUI_M) >> ICE_LLDP_TLV_OUI_S);
 614         switch (oui) {
 615         case ICE_IEEE_8021QAZ_OUI:
 616                 ice_parse_ieee_tlv(tlv, dcbcfg);
 617                 break;
 618         case ICE_CEE_DCBX_OUI:
 619                 ice_parse_cee_tlv(tlv, dcbcfg);
 620                 break;
 621         default:
 622                 break;
 623         }
 624 }
 625 
 626 /**
 627  * ice_lldp_to_dcb_cfg
 628  * @lldpmib: LLDPDU to be parsed
 629  * @dcbcfg: store for LLDPDU data
 630  *
 631  * Parse DCB configuration from the LLDPDU
 632  */
 633 static enum ice_status
 634 ice_lldp_to_dcb_cfg(u8 *lldpmib, struct ice_dcbx_cfg *dcbcfg)
 635 {
 636         struct ice_lldp_org_tlv *tlv;
 637         enum ice_status ret = 0;
 638         u16 offset = 0;
 639         u16 typelen;
 640         u16 type;
 641         u16 len;
 642 
 643         if (!lldpmib || !dcbcfg)
 644                 return ICE_ERR_PARAM;
 645 
 646         /* set to the start of LLDPDU */
 647         lldpmib += ETH_HLEN;
 648         tlv = (struct ice_lldp_org_tlv *)lldpmib;
 649         while (1) {
 650                 typelen = ntohs(tlv->typelen);
 651                 type = ((typelen & ICE_LLDP_TLV_TYPE_M) >> ICE_LLDP_TLV_TYPE_S);
 652                 len = ((typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S);
 653                 offset += sizeof(typelen) + len;
 654 
 655                 /* END TLV or beyond LLDPDU size */
 656                 if (type == ICE_TLV_TYPE_END || offset > ICE_LLDPDU_SIZE)
 657                         break;
 658 
 659                 switch (type) {
 660                 case ICE_TLV_TYPE_ORG:
 661                         ice_parse_org_tlv(tlv, dcbcfg);
 662                         break;
 663                 default:
 664                         break;
 665                 }
 666 
 667                 /* Move to next TLV */
 668                 tlv = (struct ice_lldp_org_tlv *)
 669                       ((char *)tlv + sizeof(tlv->typelen) + len);
 670         }
 671 
 672         return ret;
 673 }
 674 
 675 /**
 676  * ice_aq_get_dcb_cfg
 677  * @hw: pointer to the HW struct
 678  * @mib_type: MIB type for the query
 679  * @bridgetype: bridge type for the query (remote)
 680  * @dcbcfg: store for LLDPDU data
 681  *
 682  * Query DCB configuration from the firmware
 683  */
 684 enum ice_status
 685 ice_aq_get_dcb_cfg(struct ice_hw *hw, u8 mib_type, u8 bridgetype,
 686                    struct ice_dcbx_cfg *dcbcfg)
 687 {
 688         enum ice_status ret;
 689         u8 *lldpmib;
 690 
 691         /* Allocate the LLDPDU */
 692         lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
 693         if (!lldpmib)
 694                 return ICE_ERR_NO_MEMORY;
 695 
 696         ret = ice_aq_get_lldp_mib(hw, bridgetype, mib_type, (void *)lldpmib,
 697                                   ICE_LLDPDU_SIZE, NULL, NULL, NULL);
 698 
 699         if (!ret)
 700                 /* Parse LLDP MIB to get DCB configuration */
 701                 ret = ice_lldp_to_dcb_cfg(lldpmib, dcbcfg);
 702 
 703         devm_kfree(ice_hw_to_dev(hw), lldpmib);
 704 
 705         return ret;
 706 }
 707 
 708 /**
 709  * ice_aq_start_stop_dcbx - Start/Stop DCBX service in FW
 710  * @hw: pointer to the HW struct
 711  * @start_dcbx_agent: True if DCBX Agent needs to be started
 712  *                    False if DCBX Agent needs to be stopped
 713  * @dcbx_agent_status: FW indicates back the DCBX agent status
 714  *                     True if DCBX Agent is active
 715  *                     False if DCBX Agent is stopped
 716  * @cd: pointer to command details structure or NULL
 717  *
 718  * Start/Stop the embedded dcbx Agent. In case that this wrapper function
 719  * returns ICE_SUCCESS, caller will need to check if FW returns back the same
 720  * value as stated in dcbx_agent_status, and react accordingly. (0x0A09)
 721  */
 722 enum ice_status
 723 ice_aq_start_stop_dcbx(struct ice_hw *hw, bool start_dcbx_agent,
 724                        bool *dcbx_agent_status, struct ice_sq_cd *cd)
 725 {
 726         struct ice_aqc_lldp_stop_start_specific_agent *cmd;
 727         enum ice_status status;
 728         struct ice_aq_desc desc;
 729         u16 opcode;
 730 
 731         cmd = &desc.params.lldp_agent_ctrl;
 732 
 733         opcode = ice_aqc_opc_lldp_stop_start_specific_agent;
 734 
 735         ice_fill_dflt_direct_cmd_desc(&desc, opcode);
 736 
 737         if (start_dcbx_agent)
 738                 cmd->command = ICE_AQC_START_STOP_AGENT_START_DCBX;
 739 
 740         status = ice_aq_send_cmd(hw, &desc, NULL, 0, cd);
 741 
 742         *dcbx_agent_status = false;
 743 
 744         if (!status &&
 745             cmd->command == ICE_AQC_START_STOP_AGENT_START_DCBX)
 746                 *dcbx_agent_status = true;
 747 
 748         return status;
 749 }
 750 
 751 /**
 752  * ice_aq_get_cee_dcb_cfg
 753  * @hw: pointer to the HW struct
 754  * @buff: response buffer that stores CEE operational configuration
 755  * @cd: pointer to command details structure or NULL
 756  *
 757  * Get CEE DCBX mode operational configuration from firmware (0x0A07)
 758  */
 759 static enum ice_status
 760 ice_aq_get_cee_dcb_cfg(struct ice_hw *hw,
 761                        struct ice_aqc_get_cee_dcb_cfg_resp *buff,
 762                        struct ice_sq_cd *cd)
 763 {
 764         struct ice_aq_desc desc;
 765 
 766         ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_get_cee_dcb_cfg);
 767 
 768         return ice_aq_send_cmd(hw, &desc, (void *)buff, sizeof(*buff), cd);
 769 }
 770 
 771 /**
 772  * ice_cee_to_dcb_cfg
 773  * @cee_cfg: pointer to CEE configuration struct
 774  * @dcbcfg: DCB configuration struct
 775  *
 776  * Convert CEE configuration from firmware to DCB configuration
 777  */
 778 static void
 779 ice_cee_to_dcb_cfg(struct ice_aqc_get_cee_dcb_cfg_resp *cee_cfg,
 780                    struct ice_dcbx_cfg *dcbcfg)
 781 {
 782         u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
 783         u32 ice_aqc_cee_status_mask, ice_aqc_cee_status_shift;
 784         u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
 785         u8 i, err, sync, oper, app_index, ice_app_sel_type;
 786         u16 ice_aqc_cee_app_mask, ice_aqc_cee_app_shift;
 787         u16 ice_app_prot_id_type;
 788 
 789         /* CEE PG data to ETS config */
 790         dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
 791 
 792         /* Note that the FW creates the oper_prio_tc nibbles reversed
 793          * from those in the CEE Priority Group sub-TLV.
 794          */
 795         for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
 796                 dcbcfg->etscfg.prio_table[i * 2] =
 797                         ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_0_M) >>
 798                          ICE_CEE_PGID_PRIO_0_S);
 799                 dcbcfg->etscfg.prio_table[i * 2 + 1] =
 800                         ((cee_cfg->oper_prio_tc[i] & ICE_CEE_PGID_PRIO_1_M) >>
 801                          ICE_CEE_PGID_PRIO_1_S);
 802         }
 803 
 804         ice_for_each_traffic_class(i) {
 805                 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
 806 
 807                 if (dcbcfg->etscfg.prio_table[i] == ICE_CEE_PGID_STRICT) {
 808                         /* Map it to next empty TC */
 809                         dcbcfg->etscfg.prio_table[i] = cee_cfg->oper_num_tc - 1;
 810                         dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_STRICT;
 811                 } else {
 812                         dcbcfg->etscfg.tsatable[i] = ICE_IEEE_TSA_ETS;
 813                 }
 814         }
 815 
 816         /* CEE PFC data to ETS config */
 817         dcbcfg->pfc.pfcena = cee_cfg->oper_pfc_en;
 818         dcbcfg->pfc.pfccap = ICE_MAX_TRAFFIC_CLASS;
 819 
 820         app_index = 0;
 821         for (i = 0; i < 3; i++) {
 822                 if (i == 0) {
 823                         /* FCoE APP */
 824                         ice_aqc_cee_status_mask = ICE_AQC_CEE_FCOE_STATUS_M;
 825                         ice_aqc_cee_status_shift = ICE_AQC_CEE_FCOE_STATUS_S;
 826                         ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FCOE_M;
 827                         ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FCOE_S;
 828                         ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
 829                         ice_app_prot_id_type = ICE_APP_PROT_ID_FCOE;
 830                 } else if (i == 1) {
 831                         /* iSCSI APP */
 832                         ice_aqc_cee_status_mask = ICE_AQC_CEE_ISCSI_STATUS_M;
 833                         ice_aqc_cee_status_shift = ICE_AQC_CEE_ISCSI_STATUS_S;
 834                         ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_ISCSI_M;
 835                         ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_ISCSI_S;
 836                         ice_app_sel_type = ICE_APP_SEL_TCPIP;
 837                         ice_app_prot_id_type = ICE_APP_PROT_ID_ISCSI;
 838                 } else {
 839                         /* FIP APP */
 840                         ice_aqc_cee_status_mask = ICE_AQC_CEE_FIP_STATUS_M;
 841                         ice_aqc_cee_status_shift = ICE_AQC_CEE_FIP_STATUS_S;
 842                         ice_aqc_cee_app_mask = ICE_AQC_CEE_APP_FIP_M;
 843                         ice_aqc_cee_app_shift = ICE_AQC_CEE_APP_FIP_S;
 844                         ice_app_sel_type = ICE_APP_SEL_ETHTYPE;
 845                         ice_app_prot_id_type = ICE_APP_PROT_ID_FIP;
 846                 }
 847 
 848                 status = (tlv_status & ice_aqc_cee_status_mask) >>
 849                          ice_aqc_cee_status_shift;
 850                 err = (status & ICE_TLV_STATUS_ERR) ? 1 : 0;
 851                 sync = (status & ICE_TLV_STATUS_SYNC) ? 1 : 0;
 852                 oper = (status & ICE_TLV_STATUS_OPER) ? 1 : 0;
 853                 /* Add FCoE/iSCSI/FIP APP if Error is False and
 854                  * Oper/Sync is True
 855                  */
 856                 if (!err && sync && oper) {
 857                         dcbcfg->app[app_index].priority =
 858                                 (app_prio & ice_aqc_cee_app_mask) >>
 859                                 ice_aqc_cee_app_shift;
 860                         dcbcfg->app[app_index].selector = ice_app_sel_type;
 861                         dcbcfg->app[app_index].prot_id = ice_app_prot_id_type;
 862                         app_index++;
 863                 }
 864         }
 865 
 866         dcbcfg->numapps = app_index;
 867 }
 868 
 869 /**
 870  * ice_get_ieee_dcb_cfg
 871  * @pi: port information structure
 872  * @dcbx_mode: mode of DCBX (IEEE or CEE)
 873  *
 874  * Get IEEE or CEE mode DCB configuration from the Firmware
 875  */
 876 static enum ice_status
 877 ice_get_ieee_or_cee_dcb_cfg(struct ice_port_info *pi, u8 dcbx_mode)
 878 {
 879         struct ice_dcbx_cfg *dcbx_cfg = NULL;
 880         enum ice_status ret;
 881 
 882         if (!pi)
 883                 return ICE_ERR_PARAM;
 884 
 885         if (dcbx_mode == ICE_DCBX_MODE_IEEE)
 886                 dcbx_cfg = &pi->local_dcbx_cfg;
 887         else if (dcbx_mode == ICE_DCBX_MODE_CEE)
 888                 dcbx_cfg = &pi->desired_dcbx_cfg;
 889 
 890         /* Get Local DCB Config in case of ICE_DCBX_MODE_IEEE
 891          * or get CEE DCB Desired Config in case of ICE_DCBX_MODE_CEE
 892          */
 893         ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_LOCAL,
 894                                  ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
 895         if (ret)
 896                 goto out;
 897 
 898         /* Get Remote DCB Config */
 899         dcbx_cfg = &pi->remote_dcbx_cfg;
 900         ret = ice_aq_get_dcb_cfg(pi->hw, ICE_AQ_LLDP_MIB_REMOTE,
 901                                  ICE_AQ_LLDP_BRID_TYPE_NEAREST_BRID, dcbx_cfg);
 902         /* Don't treat ENOENT as an error for Remote MIBs */
 903         if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT)
 904                 ret = 0;
 905 
 906 out:
 907         return ret;
 908 }
 909 
 910 /**
 911  * ice_get_dcb_cfg
 912  * @pi: port information structure
 913  *
 914  * Get DCB configuration from the Firmware
 915  */
 916 enum ice_status ice_get_dcb_cfg(struct ice_port_info *pi)
 917 {
 918         struct ice_aqc_get_cee_dcb_cfg_resp cee_cfg;
 919         struct ice_dcbx_cfg *dcbx_cfg;
 920         enum ice_status ret;
 921 
 922         if (!pi)
 923                 return ICE_ERR_PARAM;
 924 
 925         ret = ice_aq_get_cee_dcb_cfg(pi->hw, &cee_cfg, NULL);
 926         if (!ret) {
 927                 /* CEE mode */
 928                 dcbx_cfg = &pi->local_dcbx_cfg;
 929                 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_CEE;
 930                 dcbx_cfg->tlv_status = le32_to_cpu(cee_cfg.tlv_status);
 931                 ice_cee_to_dcb_cfg(&cee_cfg, dcbx_cfg);
 932                 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_CEE);
 933         } else if (pi->hw->adminq.sq_last_status == ICE_AQ_RC_ENOENT) {
 934                 /* CEE mode not enabled try querying IEEE data */
 935                 dcbx_cfg = &pi->local_dcbx_cfg;
 936                 dcbx_cfg->dcbx_mode = ICE_DCBX_MODE_IEEE;
 937                 ret = ice_get_ieee_or_cee_dcb_cfg(pi, ICE_DCBX_MODE_IEEE);
 938         }
 939 
 940         return ret;
 941 }
 942 
 943 /**
 944  * ice_init_dcb
 945  * @hw: pointer to the HW struct
 946  * @enable_mib_change: enable MIB change event
 947  *
 948  * Update DCB configuration from the Firmware
 949  */
 950 enum ice_status ice_init_dcb(struct ice_hw *hw, bool enable_mib_change)
 951 {
 952         struct ice_port_info *pi = hw->port_info;
 953         enum ice_status ret = 0;
 954 
 955         if (!hw->func_caps.common_cap.dcb)
 956                 return ICE_ERR_NOT_SUPPORTED;
 957 
 958         pi->is_sw_lldp = true;
 959 
 960         /* Get DCBX status */
 961         pi->dcbx_status = ice_get_dcbx_status(hw);
 962 
 963         if (pi->dcbx_status == ICE_DCBX_STATUS_DONE ||
 964             pi->dcbx_status == ICE_DCBX_STATUS_IN_PROGRESS ||
 965             pi->dcbx_status == ICE_DCBX_STATUS_NOT_STARTED) {
 966                 /* Get current DCBX configuration */
 967                 ret = ice_get_dcb_cfg(pi);
 968                 pi->is_sw_lldp = (hw->adminq.sq_last_status == ICE_AQ_RC_EPERM);
 969                 if (ret)
 970                         return ret;
 971         } else if (pi->dcbx_status == ICE_DCBX_STATUS_DIS) {
 972                 return ICE_ERR_NOT_READY;
 973         }
 974 
 975         /* Configure the LLDP MIB change event */
 976         if (enable_mib_change) {
 977                 ret = ice_aq_cfg_lldp_mib_change(hw, true, NULL);
 978                 if (!ret)
 979                         pi->is_sw_lldp = false;
 980         }
 981 
 982         return ret;
 983 }
 984 
 985 /**
 986  * ice_cfg_lldp_mib_change
 987  * @hw: pointer to the HW struct
 988  * @ena_mib: enable/disable MIB change event
 989  *
 990  * Configure (disable/enable) MIB
 991  */
 992 enum ice_status ice_cfg_lldp_mib_change(struct ice_hw *hw, bool ena_mib)
 993 {
 994         struct ice_port_info *pi = hw->port_info;
 995         enum ice_status ret;
 996 
 997         if (!hw->func_caps.common_cap.dcb)
 998                 return ICE_ERR_NOT_SUPPORTED;
 999 
1000         /* Get DCBX status */
1001         pi->dcbx_status = ice_get_dcbx_status(hw);
1002 
1003         if (pi->dcbx_status == ICE_DCBX_STATUS_DIS)
1004                 return ICE_ERR_NOT_READY;
1005 
1006         ret = ice_aq_cfg_lldp_mib_change(hw, ena_mib, NULL);
1007         if (!ret)
1008                 pi->is_sw_lldp = !ena_mib;
1009 
1010         return ret;
1011 }
1012 
1013 /**
1014  * ice_add_ieee_ets_common_tlv
1015  * @buf: Data buffer to be populated with ice_dcb_ets_cfg data
1016  * @ets_cfg: Container for ice_dcb_ets_cfg data
1017  *
1018  * Populate the TLV buffer with ice_dcb_ets_cfg data
1019  */
1020 static void
1021 ice_add_ieee_ets_common_tlv(u8 *buf, struct ice_dcb_ets_cfg *ets_cfg)
1022 {
1023         u8 priority0, priority1;
1024         u8 offset = 0;
1025         int i;
1026 
1027         /* Priority Assignment Table (4 octets)
1028          * Octets:|    1    |    2    |    3    |    4    |
1029          *        -----------------------------------------
1030          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1031          *        -----------------------------------------
1032          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
1033          *        -----------------------------------------
1034          */
1035         for (i = 0; i < ICE_MAX_TRAFFIC_CLASS / 2; i++) {
1036                 priority0 = ets_cfg->prio_table[i * 2] & 0xF;
1037                 priority1 = ets_cfg->prio_table[i * 2 + 1] & 0xF;
1038                 buf[offset] = (priority0 << ICE_IEEE_ETS_PRIO_1_S) | priority1;
1039                 offset++;
1040         }
1041 
1042         /* TC Bandwidth Table (8 octets)
1043          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1044          *        ---------------------------------
1045          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1046          *        ---------------------------------
1047          *
1048          * TSA Assignment Table (8 octets)
1049          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1050          *        ---------------------------------
1051          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1052          *        ---------------------------------
1053          */
1054         ice_for_each_traffic_class(i) {
1055                 buf[offset] = ets_cfg->tcbwtable[i];
1056                 buf[ICE_MAX_TRAFFIC_CLASS + offset] = ets_cfg->tsatable[i];
1057                 offset++;
1058         }
1059 }
1060 
1061 /**
1062  * ice_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
1063  * @tlv: Fill the ETS config data in IEEE format
1064  * @dcbcfg: Local store which holds the DCB Config
1065  *
1066  * Prepare IEEE 802.1Qaz ETS CFG TLV
1067  */
1068 static void
1069 ice_add_ieee_ets_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1070 {
1071         struct ice_dcb_ets_cfg *etscfg;
1072         u8 *buf = tlv->tlvinfo;
1073         u8 maxtcwilling = 0;
1074         u32 ouisubtype;
1075         u16 typelen;
1076 
1077         typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1078                    ICE_IEEE_ETS_TLV_LEN);
1079         tlv->typelen = htons(typelen);
1080 
1081         ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1082                       ICE_IEEE_SUBTYPE_ETS_CFG);
1083         tlv->ouisubtype = htonl(ouisubtype);
1084 
1085         /* First Octet post subtype
1086          * --------------------------
1087          * |will-|CBS  | Re-  | Max |
1088          * |ing  |     |served| TCs |
1089          * --------------------------
1090          * |1bit | 1bit|3 bits|3bits|
1091          */
1092         etscfg = &dcbcfg->etscfg;
1093         if (etscfg->willing)
1094                 maxtcwilling = BIT(ICE_IEEE_ETS_WILLING_S);
1095         maxtcwilling |= etscfg->maxtcs & ICE_IEEE_ETS_MAXTC_M;
1096         buf[0] = maxtcwilling;
1097 
1098         /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1099         ice_add_ieee_ets_common_tlv(&buf[1], etscfg);
1100 }
1101 
1102 /**
1103  * ice_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
1104  * @tlv: Fill ETS Recommended TLV in IEEE format
1105  * @dcbcfg: Local store which holds the DCB Config
1106  *
1107  * Prepare IEEE 802.1Qaz ETS REC TLV
1108  */
1109 static void
1110 ice_add_ieee_etsrec_tlv(struct ice_lldp_org_tlv *tlv,
1111                         struct ice_dcbx_cfg *dcbcfg)
1112 {
1113         struct ice_dcb_ets_cfg *etsrec;
1114         u8 *buf = tlv->tlvinfo;
1115         u32 ouisubtype;
1116         u16 typelen;
1117 
1118         typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1119                    ICE_IEEE_ETS_TLV_LEN);
1120         tlv->typelen = htons(typelen);
1121 
1122         ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1123                       ICE_IEEE_SUBTYPE_ETS_REC);
1124         tlv->ouisubtype = htonl(ouisubtype);
1125 
1126         etsrec = &dcbcfg->etsrec;
1127 
1128         /* First Octet is reserved */
1129         /* Begin adding at Priority Assignment Table (offset 1 in buf) */
1130         ice_add_ieee_ets_common_tlv(&buf[1], etsrec);
1131 }
1132 
1133 /**
1134  * ice_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1135  * @tlv: Fill PFC TLV in IEEE format
1136  * @dcbcfg: Local store which holds the PFC CFG data
1137  *
1138  * Prepare IEEE 802.1Qaz PFC CFG TLV
1139  */
1140 static void
1141 ice_add_ieee_pfc_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg)
1142 {
1143         u8 *buf = tlv->tlvinfo;
1144         u32 ouisubtype;
1145         u16 typelen;
1146 
1147         typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) |
1148                    ICE_IEEE_PFC_TLV_LEN);
1149         tlv->typelen = htons(typelen);
1150 
1151         ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1152                       ICE_IEEE_SUBTYPE_PFC_CFG);
1153         tlv->ouisubtype = htonl(ouisubtype);
1154 
1155         /* ----------------------------------------
1156          * |will-|MBC  | Re-  | PFC |  PFC Enable  |
1157          * |ing  |     |served| cap |              |
1158          * -----------------------------------------
1159          * |1bit | 1bit|2 bits|4bits| 1 octet      |
1160          */
1161         if (dcbcfg->pfc.willing)
1162                 buf[0] = BIT(ICE_IEEE_PFC_WILLING_S);
1163 
1164         if (dcbcfg->pfc.mbc)
1165                 buf[0] |= BIT(ICE_IEEE_PFC_MBC_S);
1166 
1167         buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1168         buf[1] = dcbcfg->pfc.pfcena;
1169 }
1170 
1171 /**
1172  * ice_add_ieee_app_pri_tlv -  Prepare APP TLV in IEEE format
1173  * @tlv: Fill APP TLV in IEEE format
1174  * @dcbcfg: Local store which holds the APP CFG data
1175  *
1176  * Prepare IEEE 802.1Qaz APP CFG TLV
1177  */
1178 static void
1179 ice_add_ieee_app_pri_tlv(struct ice_lldp_org_tlv *tlv,
1180                          struct ice_dcbx_cfg *dcbcfg)
1181 {
1182         u16 typelen, len, offset = 0;
1183         u8 priority, selector, i = 0;
1184         u8 *buf = tlv->tlvinfo;
1185         u32 ouisubtype;
1186 
1187         /* No APP TLVs then just return */
1188         if (dcbcfg->numapps == 0)
1189                 return;
1190         ouisubtype = ((ICE_IEEE_8021QAZ_OUI << ICE_LLDP_TLV_OUI_S) |
1191                       ICE_IEEE_SUBTYPE_APP_PRI);
1192         tlv->ouisubtype = htonl(ouisubtype);
1193 
1194         /* Move offset to App Priority Table */
1195         offset++;
1196         /* Application Priority Table (3 octets)
1197          * Octets:|         1          |    2    |    3    |
1198          *        -----------------------------------------
1199          *        |Priority|Rsrvd| Sel |    Protocol ID    |
1200          *        -----------------------------------------
1201          *   Bits:|23    21|20 19|18 16|15                0|
1202          *        -----------------------------------------
1203          */
1204         while (i < dcbcfg->numapps) {
1205                 priority = dcbcfg->app[i].priority & 0x7;
1206                 selector = dcbcfg->app[i].selector & 0x7;
1207                 buf[offset] = (priority << ICE_IEEE_APP_PRIO_S) | selector;
1208                 buf[offset + 1] = (dcbcfg->app[i].prot_id >> 0x8) & 0xFF;
1209                 buf[offset + 2] = dcbcfg->app[i].prot_id & 0xFF;
1210                 /* Move to next app */
1211                 offset += 3;
1212                 i++;
1213                 if (i >= ICE_DCBX_MAX_APPS)
1214                         break;
1215         }
1216         /* len includes size of ouisubtype + 1 reserved + 3*numapps */
1217         len = sizeof(tlv->ouisubtype) + 1 + (i * 3);
1218         typelen = ((ICE_TLV_TYPE_ORG << ICE_LLDP_TLV_TYPE_S) | (len & 0x1FF));
1219         tlv->typelen = htons(typelen);
1220 }
1221 
1222 /**
1223  * ice_add_dcb_tlv - Add all IEEE TLVs
1224  * @tlv: Fill TLV data in IEEE format
1225  * @dcbcfg: Local store which holds the DCB Config
1226  * @tlvid: Type of IEEE TLV
1227  *
1228  * Add tlv information
1229  */
1230 static void
1231 ice_add_dcb_tlv(struct ice_lldp_org_tlv *tlv, struct ice_dcbx_cfg *dcbcfg,
1232                 u16 tlvid)
1233 {
1234         switch (tlvid) {
1235         case ICE_IEEE_TLV_ID_ETS_CFG:
1236                 ice_add_ieee_ets_tlv(tlv, dcbcfg);
1237                 break;
1238         case ICE_IEEE_TLV_ID_ETS_REC:
1239                 ice_add_ieee_etsrec_tlv(tlv, dcbcfg);
1240                 break;
1241         case ICE_IEEE_TLV_ID_PFC_CFG:
1242                 ice_add_ieee_pfc_tlv(tlv, dcbcfg);
1243                 break;
1244         case ICE_IEEE_TLV_ID_APP_PRI:
1245                 ice_add_ieee_app_pri_tlv(tlv, dcbcfg);
1246                 break;
1247         default:
1248                 break;
1249         }
1250 }
1251 
1252 /**
1253  * ice_dcb_cfg_to_lldp - Convert DCB configuration to MIB format
1254  * @lldpmib: pointer to the HW struct
1255  * @miblen: length of LLDP MIB
1256  * @dcbcfg: Local store which holds the DCB Config
1257  *
1258  * Convert the DCB configuration to MIB format
1259  */
1260 static void
1261 ice_dcb_cfg_to_lldp(u8 *lldpmib, u16 *miblen, struct ice_dcbx_cfg *dcbcfg)
1262 {
1263         u16 len, offset = 0, tlvid = ICE_TLV_ID_START;
1264         struct ice_lldp_org_tlv *tlv;
1265         u16 typelen;
1266 
1267         tlv = (struct ice_lldp_org_tlv *)lldpmib;
1268         while (1) {
1269                 ice_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1270                 typelen = ntohs(tlv->typelen);
1271                 len = (typelen & ICE_LLDP_TLV_LEN_M) >> ICE_LLDP_TLV_LEN_S;
1272                 if (len)
1273                         offset += len + 2;
1274                 /* END TLV or beyond LLDPDU size */
1275                 if (tlvid >= ICE_TLV_ID_END_OF_LLDPPDU ||
1276                     offset > ICE_LLDPDU_SIZE)
1277                         break;
1278                 /* Move to next TLV */
1279                 if (len)
1280                         tlv = (struct ice_lldp_org_tlv *)
1281                                 ((char *)tlv + sizeof(tlv->typelen) + len);
1282         }
1283         *miblen = offset;
1284 }
1285 
1286 /**
1287  * ice_set_dcb_cfg - Set the local LLDP MIB to FW
1288  * @pi: port information structure
1289  *
1290  * Set DCB configuration to the Firmware
1291  */
1292 enum ice_status ice_set_dcb_cfg(struct ice_port_info *pi)
1293 {
1294         u8 mib_type, *lldpmib = NULL;
1295         struct ice_dcbx_cfg *dcbcfg;
1296         enum ice_status ret;
1297         struct ice_hw *hw;
1298         u16 miblen;
1299 
1300         if (!pi)
1301                 return ICE_ERR_PARAM;
1302 
1303         hw = pi->hw;
1304 
1305         /* update the HW local config */
1306         dcbcfg = &pi->local_dcbx_cfg;
1307         /* Allocate the LLDPDU */
1308         lldpmib = devm_kzalloc(ice_hw_to_dev(hw), ICE_LLDPDU_SIZE, GFP_KERNEL);
1309         if (!lldpmib)
1310                 return ICE_ERR_NO_MEMORY;
1311 
1312         mib_type = SET_LOCAL_MIB_TYPE_LOCAL_MIB;
1313         if (dcbcfg->app_mode == ICE_DCBX_APPS_NON_WILLING)
1314                 mib_type |= SET_LOCAL_MIB_TYPE_CEE_NON_WILLING;
1315 
1316         ice_dcb_cfg_to_lldp(lldpmib, &miblen, dcbcfg);
1317         ret = ice_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen,
1318                                   NULL);
1319 
1320         devm_kfree(ice_hw_to_dev(hw), lldpmib);
1321 
1322         return ret;
1323 }
1324 
1325 /**
1326  * ice_aq_query_port_ets - query port ets configuration
1327  * @pi: port information structure
1328  * @buf: pointer to buffer
1329  * @buf_size: buffer size in bytes
1330  * @cd: pointer to command details structure or NULL
1331  *
1332  * query current port ets configuration
1333  */
1334 static enum ice_status
1335 ice_aq_query_port_ets(struct ice_port_info *pi,
1336                       struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1337                       struct ice_sq_cd *cd)
1338 {
1339         struct ice_aqc_query_port_ets *cmd;
1340         struct ice_aq_desc desc;
1341         enum ice_status status;
1342 
1343         if (!pi)
1344                 return ICE_ERR_PARAM;
1345         cmd = &desc.params.port_ets;
1346         ice_fill_dflt_direct_cmd_desc(&desc, ice_aqc_opc_query_port_ets);
1347         cmd->port_teid = pi->root->info.node_teid;
1348 
1349         status = ice_aq_send_cmd(pi->hw, &desc, buf, buf_size, cd);
1350         return status;
1351 }
1352 
1353 /**
1354  * ice_update_port_tc_tree_cfg - update TC tree configuration
1355  * @pi: port information structure
1356  * @buf: pointer to buffer
1357  *
1358  * update the SW DB with the new TC changes
1359  */
1360 static enum ice_status
1361 ice_update_port_tc_tree_cfg(struct ice_port_info *pi,
1362                             struct ice_aqc_port_ets_elem *buf)
1363 {
1364         struct ice_sched_node *node, *tc_node;
1365         struct ice_aqc_get_elem elem;
1366         enum ice_status status = 0;
1367         u32 teid1, teid2;
1368         u8 i, j;
1369 
1370         if (!pi)
1371                 return ICE_ERR_PARAM;
1372         /* suspend the missing TC nodes */
1373         for (i = 0; i < pi->root->num_children; i++) {
1374                 teid1 = le32_to_cpu(pi->root->children[i]->info.node_teid);
1375                 ice_for_each_traffic_class(j) {
1376                         teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1377                         if (teid1 == teid2)
1378                                 break;
1379                 }
1380                 if (j < ICE_MAX_TRAFFIC_CLASS)
1381                         continue;
1382                 /* TC is missing */
1383                 pi->root->children[i]->in_use = false;
1384         }
1385         /* add the new TC nodes */
1386         ice_for_each_traffic_class(j) {
1387                 teid2 = le32_to_cpu(buf->tc_node_teid[j]);
1388                 if (teid2 == ICE_INVAL_TEID)
1389                         continue;
1390                 /* Is it already present in the tree ? */
1391                 for (i = 0; i < pi->root->num_children; i++) {
1392                         tc_node = pi->root->children[i];
1393                         if (!tc_node)
1394                                 continue;
1395                         teid1 = le32_to_cpu(tc_node->info.node_teid);
1396                         if (teid1 == teid2) {
1397                                 tc_node->tc_num = j;
1398                                 tc_node->in_use = true;
1399                                 break;
1400                         }
1401                 }
1402                 if (i < pi->root->num_children)
1403                         continue;
1404                 /* new TC */
1405                 status = ice_sched_query_elem(pi->hw, teid2, &elem);
1406                 if (!status)
1407                         status = ice_sched_add_node(pi, 1, &elem.generic[0]);
1408                 if (status)
1409                         break;
1410                 /* update the TC number */
1411                 node = ice_sched_find_node_by_teid(pi->root, teid2);
1412                 if (node)
1413                         node->tc_num = j;
1414         }
1415         return status;
1416 }
1417 
1418 /**
1419  * ice_query_port_ets - query port ets configuration
1420  * @pi: port information structure
1421  * @buf: pointer to buffer
1422  * @buf_size: buffer size in bytes
1423  * @cd: pointer to command details structure or NULL
1424  *
1425  * query current port ets configuration and update the
1426  * SW DB with the TC changes
1427  */
1428 enum ice_status
1429 ice_query_port_ets(struct ice_port_info *pi,
1430                    struct ice_aqc_port_ets_elem *buf, u16 buf_size,
1431                    struct ice_sq_cd *cd)
1432 {
1433         enum ice_status status;
1434 
1435         mutex_lock(&pi->sched_lock);
1436         status = ice_aq_query_port_ets(pi, buf, buf_size, cd);
1437         if (!status)
1438                 status = ice_update_port_tc_tree_cfg(pi, buf);
1439         mutex_unlock(&pi->sched_lock);
1440         return status;
1441 }
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root/drivers/net/ethernet/intel/ice/ice_dcb.c

DEFINITIONS
