kernel/drivers/net/ethernet/intel/i40e/i40e_dcb.c

   1 /*******************************************************************************
   2  *
   3  * Intel Ethernet Controller XL710 Family Linux Driver
   4  * Copyright(c) 2013 - 2014 Intel Corporation.
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms and conditions of the GNU General Public License,
   8  * version 2, as published by the Free Software Foundation.
   9  *
  10  * This program is distributed in the hope it will be useful, but WITHOUT
  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  13  * more details.
  14  *
  15  * You should have received a copy of the GNU General Public License along
  16  * with this program.  If not, see <http://www.gnu.org/licenses/>.
  17  *
  18  * The full GNU General Public License is included in this distribution in
  19  * the file called "COPYING".
  20  *
  21  * Contact Information:
  22  * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
  23  * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
  24  *
  25  ******************************************************************************/
  26
  27 #include "i40e_adminq.h"
  28 #include "i40e_prototype.h"
  29 #include "i40e_dcb.h"
  30
  31 /**
  32  * i40e_get_dcbx_status
  33  * @hw: pointer to the hw struct
  34  * @status: Embedded DCBX Engine Status
  35  *
  36  * Get the DCBX status from the Firmware
  37  **/
  38 i40e_status i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
  39 {
  40         u32 reg;
  41
  42         if (!status)
  43                 return I40E_ERR_PARAM;
  44
  45         reg = rd32(hw, I40E_PRTDCB_GENS);
  46         *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
  47                         I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
  48
  49         return 0;
  50 }
  51
  52 /**
  53  * i40e_parse_ieee_etscfg_tlv
  54  * @tlv: IEEE 802.1Qaz ETS CFG TLV
  55  * @dcbcfg: Local store to update ETS CFG data
  56  *
  57  * Parses IEEE 802.1Qaz ETS CFG TLV
  58  **/
  59 static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
  60                                        struct i40e_dcbx_config *dcbcfg)
  61 {
  62         struct i40e_dcb_ets_config *etscfg;
  63         u8 *buf = tlv->tlvinfo;
  64         u16 offset = 0;
  65         u8 priority;
  66         int i;
  67
  68         /* First Octet post subtype
  69          * --------------------------
  70          * |will-|CBS  | Re-  | Max |
  71          * |ing  |     |served| TCs |
  72          * --------------------------
  73          * |1bit | 1bit|3 bits|3bits|
  74          */
  75         etscfg = &dcbcfg->etscfg;
  76         etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
  77                                I40E_IEEE_ETS_WILLING_SHIFT);
  78         etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
  79                            I40E_IEEE_ETS_CBS_SHIFT);
  80         etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
  81                               I40E_IEEE_ETS_MAXTC_SHIFT);
  82
  83         /* Move offset to Priority Assignment Table */
  84         offset++;
  85
  86         /* Priority Assignment Table (4 octets)
  87          * Octets:|    1    |    2    |    3    |    4    |
  88          *        -----------------------------------------
  89          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
  90          *        -----------------------------------------
  91          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
  92          *        -----------------------------------------
  93          */
  94         for (i = 0; i < 4; i++) {
  95                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
  96                                 I40E_IEEE_ETS_PRIO_1_SHIFT);
  97                 etscfg->prioritytable[i * 2] =  priority;
  98                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
  99                                 I40E_IEEE_ETS_PRIO_0_SHIFT);
 100                 etscfg->prioritytable[i * 2 + 1] = priority;
 101                 offset++;
 102         }
 103
 104         /* TC Bandwidth Table (8 octets)
 105          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 106          *        ---------------------------------
 107          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 108          *        ---------------------------------
 109          */
 110         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 111                 etscfg->tcbwtable[i] = buf[offset++];
 112
 113         /* TSA Assignment Table (8 octets)
 114          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 115          *        ---------------------------------
 116          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 117          *        ---------------------------------
 118          */
 119         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 120                 etscfg->tsatable[i] = buf[offset++];
 121 }
 122
 123 /**
 124  * i40e_parse_ieee_etsrec_tlv
 125  * @tlv: IEEE 802.1Qaz ETS REC TLV
 126  * @dcbcfg: Local store to update ETS REC data
 127  *
 128  * Parses IEEE 802.1Qaz ETS REC TLV
 129  **/
 130 static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
 131                                        struct i40e_dcbx_config *dcbcfg)
 132 {
 133         u8 *buf = tlv->tlvinfo;
 134         u16 offset = 0;
 135         u8 priority;
 136         int i;
 137
 138         /* Move offset to priority table */
 139         offset++;
 140
 141         /* Priority Assignment Table (4 octets)
 142          * Octets:|    1    |    2    |    3    |    4    |
 143          *        -----------------------------------------
 144          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 145          *        -----------------------------------------
 146          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 147          *        -----------------------------------------
 148          */
 149         for (i = 0; i < 4; i++) {
 150                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
 151                                 I40E_IEEE_ETS_PRIO_1_SHIFT);
 152                 dcbcfg->etsrec.prioritytable[i*2] =  priority;
 153                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
 154                                 I40E_IEEE_ETS_PRIO_0_SHIFT);
 155                 dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
 156                 offset++;
 157         }
 158
 159         /* TC Bandwidth Table (8 octets)
 160          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 161          *        ---------------------------------
 162          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 163          *        ---------------------------------
 164          */
 165         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 166                 dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
 167
 168         /* TSA Assignment Table (8 octets)
 169          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 170          *        ---------------------------------
 171          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 172          *        ---------------------------------
 173          */
 174         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 175                 dcbcfg->etsrec.tsatable[i] = buf[offset++];
 176 }
 177
 178 /**
 179  * i40e_parse_ieee_pfccfg_tlv
 180  * @tlv: IEEE 802.1Qaz PFC CFG TLV
 181  * @dcbcfg: Local store to update PFC CFG data
 182  *
 183  * Parses IEEE 802.1Qaz PFC CFG TLV
 184  **/
 185 static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
 186                                        struct i40e_dcbx_config *dcbcfg)
 187 {
 188         u8 *buf = tlv->tlvinfo;
 189
 190         /* ----------------------------------------
 191          * |will-|MBC  | Re-  | PFC |  PFC Enable  |
 192          * |ing  |     |served| cap |              |
 193          * -----------------------------------------
 194          * |1bit | 1bit|2 bits|4bits| 1 octet      |
 195          */
 196         dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
 197                                    I40E_IEEE_PFC_WILLING_SHIFT);
 198         dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
 199                                I40E_IEEE_PFC_MBC_SHIFT);
 200         dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
 201                                   I40E_IEEE_PFC_CAP_SHIFT);
 202         dcbcfg->pfc.pfcenable = buf[1];
 203 }
 204
 205 /**
 206  * i40e_parse_ieee_app_tlv
 207  * @tlv: IEEE 802.1Qaz APP TLV
 208  * @dcbcfg: Local store to update APP PRIO data
 209  *
 210  * Parses IEEE 802.1Qaz APP PRIO TLV
 211  **/
 212 static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
 213                                     struct i40e_dcbx_config *dcbcfg)
 214 {
 215         u16 typelength;
 216         u16 offset = 0;
 217         u16 length;
 218         int i = 0;
 219         u8 *buf;
 220
 221         typelength = ntohs(tlv->typelength);
 222         length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
 223                        I40E_LLDP_TLV_LEN_SHIFT);
 224         buf = tlv->tlvinfo;
 225
 226         /* The App priority table starts 5 octets after TLV header */
 227         length -= (sizeof(tlv->ouisubtype) + 1);
 228
 229         /* Move offset to App Priority Table */
 230         offset++;
 231
 232         /* Application Priority Table (3 octets)
 233          * Octets:|         1          |    2    |    3    |
 234          *        -----------------------------------------
 235          *        |Priority|Rsrvd| Sel |    Protocol ID    |
 236          *        -----------------------------------------
 237          *   Bits:|23    21|20 19|18 16|15                0|
 238          *        -----------------------------------------
 239          */
 240         while (offset < length) {
 241                 dcbcfg->app[i].priority = (u8)((buf[offset] &
 242                                                 I40E_IEEE_APP_PRIO_MASK) >>
 243                                                I40E_IEEE_APP_PRIO_SHIFT);
 244                 dcbcfg->app[i].selector = (u8)((buf[offset] &
 245                                                 I40E_IEEE_APP_SEL_MASK) >>
 246                                                I40E_IEEE_APP_SEL_SHIFT);
 247                 dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
 248                                              buf[offset + 2];
 249                 /* Move to next app */
 250                 offset += 3;
 251                 i++;
 252                 if (i >= I40E_DCBX_MAX_APPS)
 253                         break;
 254         }
 255
 256         dcbcfg->numapps = i;
 257 }
 258
 259 /**
 260  * i40e_parse_ieee_etsrec_tlv
 261  * @tlv: IEEE 802.1Qaz TLV
 262  * @dcbcfg: Local store to update ETS REC data
 263  *
 264  * Get the TLV subtype and send it to parsing function
 265  * based on the subtype value
 266  **/
 267 static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
 268                                 struct i40e_dcbx_config *dcbcfg)
 269 {
 270         u32 ouisubtype;
 271         u8 subtype;
 272
 273         ouisubtype = ntohl(tlv->ouisubtype);
 274         subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
 275                        I40E_LLDP_TLV_SUBTYPE_SHIFT);
 276         switch (subtype) {
 277         case I40E_IEEE_SUBTYPE_ETS_CFG:
 278                 i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
 279                 break;
 280         case I40E_IEEE_SUBTYPE_ETS_REC:
 281                 i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
 282                 break;
 283         case I40E_IEEE_SUBTYPE_PFC_CFG:
 284                 i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
 285                 break;
 286         case I40E_IEEE_SUBTYPE_APP_PRI:
 287                 i40e_parse_ieee_app_tlv(tlv, dcbcfg);
 288                 break;
 289         default:
 290                 break;
 291         }
 292 }
 293
 294 /**
 295  * i40e_parse_org_tlv
 296  * @tlv: Organization specific TLV
 297  * @dcbcfg: Local store to update ETS REC data
 298  *
 299  * Currently only IEEE 802.1Qaz TLV is supported, all others
 300  * will be returned
 301  **/
 302 static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
 303                                struct i40e_dcbx_config *dcbcfg)
 304 {
 305         u32 ouisubtype;
 306         u32 oui;
 307
 308         ouisubtype = ntohl(tlv->ouisubtype);
 309         oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
 310                     I40E_LLDP_TLV_OUI_SHIFT);
 311         switch (oui) {
 312         case I40E_IEEE_8021QAZ_OUI:
 313                 i40e_parse_ieee_tlv(tlv, dcbcfg);
 314                 break;
 315         default:
 316                 break;
 317         }
 318 }
 319
 320 /**
 321  * i40e_lldp_to_dcb_config
 322  * @lldpmib: LLDPDU to be parsed
 323  * @dcbcfg: store for LLDPDU data
 324  *
 325  * Parse DCB configuration from the LLDPDU
 326  **/
 327 i40e_status i40e_lldp_to_dcb_config(u8 *lldpmib,
 328                                     struct i40e_dcbx_config *dcbcfg)
 329 {
 330         i40e_status ret = 0;
 331         struct i40e_lldp_org_tlv *tlv;
 332         u16 type;
 333         u16 length;
 334         u16 typelength;
 335         u16 offset = 0;
 336
 337         if (!lldpmib || !dcbcfg)
 338                 return I40E_ERR_PARAM;
 339
 340         /* set to the start of LLDPDU */
 341         lldpmib += ETH_HLEN;
 342         tlv = (struct i40e_lldp_org_tlv *)lldpmib;
 343         while (1) {
 344                 typelength = ntohs(tlv->typelength);
 345                 type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
 346                              I40E_LLDP_TLV_TYPE_SHIFT);
 347                 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
 348                                I40E_LLDP_TLV_LEN_SHIFT);
 349                 offset += sizeof(typelength) + length;
 350
 351                 /* END TLV or beyond LLDPDU size */
 352                 if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
 353                         break;
 354
 355                 switch (type) {
 356                 case I40E_TLV_TYPE_ORG:
 357                         i40e_parse_org_tlv(tlv, dcbcfg);
 358                         break;
 359                 default:
 360                         break;
 361                 }
 362
 363                 /* Move to next TLV */
 364                 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
 365                                                     sizeof(tlv->typelength) +
 366                                                     length);
 367         }
 368
 369         return ret;
 370 }
 371
 372 /**
 373  * i40e_aq_get_dcb_config
 374  * @hw: pointer to the hw struct
 375  * @mib_type: mib type for the query
 376  * @bridgetype: bridge type for the query (remote)
 377  * @dcbcfg: store for LLDPDU data
 378  *
 379  * Query DCB configuration from the Firmware
 380  **/
 381 i40e_status i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
 382                                    u8 bridgetype,
 383                                    struct i40e_dcbx_config *dcbcfg)
 384 {
 385         i40e_status ret = 0;
 386         struct i40e_virt_mem mem;
 387         u8 *lldpmib;
 388
 389         /* Allocate the LLDPDU */
 390         ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
 391         if (ret)
 392                 return ret;
 393
 394         lldpmib = (u8 *)mem.va;
 395         ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
 396                                    (void *)lldpmib, I40E_LLDPDU_SIZE,
 397                                    NULL, NULL, NULL);
 398         if (ret)
 399                 goto free_mem;
 400
 401         /* Parse LLDP MIB to get dcb configuration */
 402         ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
 403
 404 free_mem:
 405         i40e_free_virt_mem(hw, &mem);
 406         return ret;
 407 }
 408
 409 /**
 410  * i40e_cee_to_dcb_v1_config
 411  * @cee_cfg: pointer to CEE v1 response configuration struct
 412  * @dcbcfg: DCB configuration struct
 413  *
 414  * Convert CEE v1 configuration from firmware to DCB configuration
 415  **/
 416 static void i40e_cee_to_dcb_v1_config(
 417                         struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
 418                         struct i40e_dcbx_config *dcbcfg)
 419 {
 420         u16 status, tlv_status = le16_to_cpu(cee_cfg->tlv_status);
 421         u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
 422         u8 i, tc, err;
 423
 424         /* CEE PG data to ETS config */
 425         dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
 426
 427         for (i = 0; i < 4; i++) {
 428                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 429                          I40E_CEE_PGID_PRIO_1_MASK) >>
 430                          I40E_CEE_PGID_PRIO_1_SHIFT);
 431                 dcbcfg->etscfg.prioritytable[i*2] =  tc;
 432                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 433                          I40E_CEE_PGID_PRIO_0_MASK) >>
 434                          I40E_CEE_PGID_PRIO_0_SHIFT);
 435                 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
 436         }
 437
 438         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 439                 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
 440
 441         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 442                 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
 443                         /* Map it to next empty TC */
 444                         dcbcfg->etscfg.prioritytable[i] =
 445                                                 cee_cfg->oper_num_tc - 1;
 446                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
 447                 } else {
 448                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
 449                 }
 450         }
 451
 452         /* CEE PFC data to ETS config */
 453         dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
 454         dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
 455
 456         status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
 457                   I40E_AQC_CEE_APP_STATUS_SHIFT;
 458         err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
 459         /* Add APPs if Error is False */
 460         if (!err) {
 461                 /* CEE operating configuration supports FCoE/iSCSI/FIP only */
 462                 dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
 463
 464                 /* FCoE APP */
 465                 dcbcfg->app[0].priority =
 466                         (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
 467                          I40E_AQC_CEE_APP_FCOE_SHIFT;
 468                 dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
 469                 dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
 470
 471                 /* iSCSI APP */
 472                 dcbcfg->app[1].priority =
 473                         (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
 474                          I40E_AQC_CEE_APP_ISCSI_SHIFT;
 475                 dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
 476                 dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
 477
 478                 /* FIP APP */
 479                 dcbcfg->app[2].priority =
 480                         (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
 481                          I40E_AQC_CEE_APP_FIP_SHIFT;
 482                 dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
 483                 dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
 484         }
 485 }
 486
 487 /**
 488  * i40e_cee_to_dcb_config
 489  * @cee_cfg: pointer to CEE configuration struct
 490  * @dcbcfg: DCB configuration struct
 491  *
 492  * Convert CEE configuration from firmware to DCB configuration
 493  **/
 494 static void i40e_cee_to_dcb_config(
 495                                 struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
 496                                 struct i40e_dcbx_config *dcbcfg)
 497 {
 498         u32 status, tlv_status = le32_to_cpu(cee_cfg->tlv_status);
 499         u16 app_prio = le16_to_cpu(cee_cfg->oper_app_prio);
 500         u8 i, tc, err, sync, oper;
 501
 502         /* CEE PG data to ETS config */
 503         dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
 504
 505         for (i = 0; i < 4; i++) {
 506                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 507                          I40E_CEE_PGID_PRIO_1_MASK) >>
 508                          I40E_CEE_PGID_PRIO_1_SHIFT);
 509                 dcbcfg->etscfg.prioritytable[i*2] =  tc;
 510                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 511                          I40E_CEE_PGID_PRIO_0_MASK) >>
 512                          I40E_CEE_PGID_PRIO_0_SHIFT);
 513                 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
 514         }
 515
 516         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 517                 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
 518
 519         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 520                 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
 521                         /* Map it to next empty TC */
 522                         dcbcfg->etscfg.prioritytable[i] =
 523                                                 cee_cfg->oper_num_tc - 1;
 524                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
 525                 } else {
 526                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
 527                 }
 528         }
 529
 530         /* CEE PFC data to ETS config */
 531         dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
 532         dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
 533
 534         status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
 535                   I40E_AQC_CEE_APP_STATUS_SHIFT;
 536         err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
 537         sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
 538         oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
 539         /* Add APPs if Error is False and Oper/Sync is True */
 540         if (!err && sync && oper) {
 541                 /* CEE operating configuration supports FCoE/iSCSI/FIP only */
 542                 dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
 543
 544                 /* FCoE APP */
 545                 dcbcfg->app[0].priority =
 546                         (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
 547                          I40E_AQC_CEE_APP_FCOE_SHIFT;
 548                 dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
 549                 dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
 550
 551                 /* iSCSI APP */
 552                 dcbcfg->app[1].priority =
 553                         (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
 554                          I40E_AQC_CEE_APP_ISCSI_SHIFT;
 555                 dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
 556                 dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
 557
 558                 /* FIP APP */
 559                 dcbcfg->app[2].priority =
 560                         (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
 561                          I40E_AQC_CEE_APP_FIP_SHIFT;
 562                 dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
 563                 dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
 564         }
 565 }
 566
 567 /**
 568  * i40e_get_dcb_config
 569  * @hw: pointer to the hw struct
 570  *
 571  * Get DCB configuration from the Firmware
 572  **/
 573 i40e_status i40e_get_dcb_config(struct i40e_hw *hw)
 574 {
 575         i40e_status ret = 0;
 576         struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
 577         struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
 578
 579         /* If Firmware version < v4.33 IEEE only */
 580         if (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
 581             (hw->aq.fw_maj_ver < 4))
 582                 goto ieee;
 583
 584         /* If Firmware version == v4.33 use old CEE struct */
 585         if ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33)) {
 586                 ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
 587                                                  sizeof(cee_v1_cfg), NULL);
 588                 if (!ret) {
 589                         /* CEE mode */
 590                         hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
 591                         i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
 592                                                   &hw->local_dcbx_config);
 593                 }
 594         } else {
 595                 ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
 596                                                  sizeof(cee_cfg), NULL);
 597                 if (!ret) {
 598                         /* CEE mode */
 599                         hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
 600                         i40e_cee_to_dcb_config(&cee_cfg,
 601                                                &hw->local_dcbx_config);
 602                 }
 603         }
 604
 605         /* CEE mode not enabled try querying IEEE data */
 606         if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
 607                 goto ieee;
 608         else
 609                 goto out;
 610
 611 ieee:
 612         /* IEEE mode */
 613         hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
 614         /* Get Local DCB Config */
 615         ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
 616                                      &hw->local_dcbx_config);
 617         if (ret)
 618                 goto out;
 619
 620         /* Get Remote DCB Config */
 621         ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
 622                                      I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
 623                                      &hw->remote_dcbx_config);
 624         /* Don't treat ENOENT as an error for Remote MIBs */
 625         if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
 626                 ret = 0;
 627
 628 out:
 629         return ret;
 630 }
 631
 632 /**
 633  * i40e_init_dcb
 634  * @hw: pointer to the hw struct
 635  *
 636  * Update DCB configuration from the Firmware
 637  **/
 638 i40e_status i40e_init_dcb(struct i40e_hw *hw)
 639 {
 640         i40e_status ret = 0;
 641         struct i40e_lldp_variables lldp_cfg;
 642         u8 adminstatus = 0;
 643
 644         if (!hw->func_caps.dcb)
 645                 return ret;
 646
 647         /* Read LLDP NVM area */
 648         ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
 649         if (ret)
 650                 return ret;
 651
 652         /* Get the LLDP AdminStatus for the current port */
 653         adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
 654         adminstatus &= 0xF;
 655
 656         /* LLDP agent disabled */
 657         if (!adminstatus) {
 658                 hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
 659                 return ret;
 660         }
 661
 662         /* Get DCBX status */
 663         ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
 664         if (ret)
 665                 return ret;
 666
 667         /* Check the DCBX Status */
 668         switch (hw->dcbx_status) {
 669         case I40E_DCBX_STATUS_DONE:
 670         case I40E_DCBX_STATUS_IN_PROGRESS:
 671                 /* Get current DCBX configuration */
 672                 ret = i40e_get_dcb_config(hw);
 673                 if (ret)
 674                         return ret;
 675                 break;
 676         case I40E_DCBX_STATUS_DISABLED:
 677                 return ret;
 678         case I40E_DCBX_STATUS_NOT_STARTED:
 679         case I40E_DCBX_STATUS_MULTIPLE_PEERS:
 680         default:
 681                 break;
 682         }
 683
 684         /* Configure the LLDP MIB change event */
 685         ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
 686         if (ret)
 687                 return ret;
 688
 689         return ret;
 690 }
 691
 692 /**
 693  * i40e_read_lldp_cfg - read LLDP Configuration data from NVM
 694  * @hw: pointer to the HW structure
 695  * @lldp_cfg: pointer to hold lldp configuration variables
 696  *
 697  * Reads the LLDP configuration data from NVM
 698  **/
 699 i40e_status i40e_read_lldp_cfg(struct i40e_hw *hw,
 700                                struct i40e_lldp_variables *lldp_cfg)
 701 {
 702         i40e_status ret = 0;
 703         u32 offset = (2 * I40E_NVM_LLDP_CFG_PTR);
 704
 705         if (!lldp_cfg)
 706                 return I40E_ERR_PARAM;
 707
 708         ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
 709         if (ret)
 710                 goto err_lldp_cfg;
 711
 712         ret = i40e_aq_read_nvm(hw, I40E_SR_EMP_MODULE_PTR, offset,
 713                                sizeof(struct i40e_lldp_variables),
 714                                (u8 *)lldp_cfg,
 715                                true, NULL);
 716         i40e_release_nvm(hw);
 717
 718 err_lldp_cfg:
 719         return ret;
 720 }