drivers/net/i40e/base/i40e_dcb.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2001-2018
   3  */
   4
   5 #include "i40e_adminq.h"
   6 #include "i40e_prototype.h"
   7 #include "i40e_dcb.h"
   8
   9 /**
  10  * i40e_get_dcbx_status
  11  * @hw: pointer to the hw struct
  12  * @status: Embedded DCBX Engine Status
  13  *
  14  * Get the DCBX status from the Firmware
  15  **/
  16 enum i40e_status_code i40e_get_dcbx_status(struct i40e_hw *hw, u16 *status)
  17 {
  18         u32 reg;
  19
  20         if (!status)
  21                 return I40E_ERR_PARAM;
  22
  23         reg = rd32(hw, I40E_PRTDCB_GENS);
  24         *status = (u16)((reg & I40E_PRTDCB_GENS_DCBX_STATUS_MASK) >>
  25                         I40E_PRTDCB_GENS_DCBX_STATUS_SHIFT);
  26
  27         return I40E_SUCCESS;
  28 }
  29
  30 /**
  31  * i40e_parse_ieee_etscfg_tlv
  32  * @tlv: IEEE 802.1Qaz ETS CFG TLV
  33  * @dcbcfg: Local store to update ETS CFG data
  34  *
  35  * Parses IEEE 802.1Qaz ETS CFG TLV
  36  **/
  37 static void i40e_parse_ieee_etscfg_tlv(struct i40e_lldp_org_tlv *tlv,
  38                                        struct i40e_dcbx_config *dcbcfg)
  39 {
  40         struct i40e_dcb_ets_config *etscfg;
  41         u8 *buf = tlv->tlvinfo;
  42         u16 offset = 0;
  43         u8 priority;
  44         int i;
  45
  46         /* First Octet post subtype
  47          * --------------------------
  48          * |will-|CBS  | Re-  | Max |
  49          * |ing  |     |served| TCs |
  50          * --------------------------
  51          * |1bit | 1bit|3 bits|3bits|
  52          */
  53         etscfg = &dcbcfg->etscfg;
  54         etscfg->willing = (u8)((buf[offset] & I40E_IEEE_ETS_WILLING_MASK) >>
  55                                I40E_IEEE_ETS_WILLING_SHIFT);
  56         etscfg->cbs = (u8)((buf[offset] & I40E_IEEE_ETS_CBS_MASK) >>
  57                            I40E_IEEE_ETS_CBS_SHIFT);
  58         etscfg->maxtcs = (u8)((buf[offset] & I40E_IEEE_ETS_MAXTC_MASK) >>
  59                               I40E_IEEE_ETS_MAXTC_SHIFT);
  60
  61         /* Move offset to Priority Assignment Table */
  62         offset++;
  63
  64         /* Priority Assignment Table (4 octets)
  65          * Octets:|    1    |    2    |    3    |    4    |
  66          *        -----------------------------------------
  67          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
  68          *        -----------------------------------------
  69          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
  70          *        -----------------------------------------
  71          */
  72         for (i = 0; i < 4; i++) {
  73                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
  74                                 I40E_IEEE_ETS_PRIO_1_SHIFT);
  75                 etscfg->prioritytable[i * 2] =  priority;
  76                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
  77                                 I40E_IEEE_ETS_PRIO_0_SHIFT);
  78                 etscfg->prioritytable[i * 2 + 1] = priority;
  79                 offset++;
  80         }
  81
  82         /* TC Bandwidth Table (8 octets)
  83          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
  84          *        ---------------------------------
  85          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
  86          *        ---------------------------------
  87          */
  88         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
  89                 etscfg->tcbwtable[i] = buf[offset++];
  90
  91         /* TSA Assignment Table (8 octets)
  92          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
  93          *        ---------------------------------
  94          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
  95          *        ---------------------------------
  96          */
  97         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
  98                 etscfg->tsatable[i] = buf[offset++];
  99 }
 100
 101 /**
 102  * i40e_parse_ieee_etsrec_tlv
 103  * @tlv: IEEE 802.1Qaz ETS REC TLV
 104  * @dcbcfg: Local store to update ETS REC data
 105  *
 106  * Parses IEEE 802.1Qaz ETS REC TLV
 107  **/
 108 static void i40e_parse_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
 109                                        struct i40e_dcbx_config *dcbcfg)
 110 {
 111         u8 *buf = tlv->tlvinfo;
 112         u16 offset = 0;
 113         u8 priority;
 114         int i;
 115
 116         /* Move offset to priority table */
 117         offset++;
 118
 119         /* Priority Assignment Table (4 octets)
 120          * Octets:|    1    |    2    |    3    |    4    |
 121          *        -----------------------------------------
 122          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 123          *        -----------------------------------------
 124          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 125          *        -----------------------------------------
 126          */
 127         for (i = 0; i < 4; i++) {
 128                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_1_MASK) >>
 129                                 I40E_IEEE_ETS_PRIO_1_SHIFT);
 130                 dcbcfg->etsrec.prioritytable[i*2] =  priority;
 131                 priority = (u8)((buf[offset] & I40E_IEEE_ETS_PRIO_0_MASK) >>
 132                                 I40E_IEEE_ETS_PRIO_0_SHIFT);
 133                 dcbcfg->etsrec.prioritytable[i*2 + 1] = priority;
 134                 offset++;
 135         }
 136
 137         /* TC Bandwidth Table (8 octets)
 138          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 139          *        ---------------------------------
 140          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 141          *        ---------------------------------
 142          */
 143         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 144                 dcbcfg->etsrec.tcbwtable[i] = buf[offset++];
 145
 146         /* TSA Assignment Table (8 octets)
 147          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 148          *        ---------------------------------
 149          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 150          *        ---------------------------------
 151          */
 152         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 153                 dcbcfg->etsrec.tsatable[i] = buf[offset++];
 154 }
 155
 156 /**
 157  * i40e_parse_ieee_pfccfg_tlv
 158  * @tlv: IEEE 802.1Qaz PFC CFG TLV
 159  * @dcbcfg: Local store to update PFC CFG data
 160  *
 161  * Parses IEEE 802.1Qaz PFC CFG TLV
 162  **/
 163 static void i40e_parse_ieee_pfccfg_tlv(struct i40e_lldp_org_tlv *tlv,
 164                                        struct i40e_dcbx_config *dcbcfg)
 165 {
 166         u8 *buf = tlv->tlvinfo;
 167
 168         /* ----------------------------------------
 169          * |will-|MBC  | Re-  | PFC |  PFC Enable  |
 170          * |ing  |     |served| cap |              |
 171          * -----------------------------------------
 172          * |1bit | 1bit|2 bits|4bits| 1 octet      |
 173          */
 174         dcbcfg->pfc.willing = (u8)((buf[0] & I40E_IEEE_PFC_WILLING_MASK) >>
 175                                    I40E_IEEE_PFC_WILLING_SHIFT);
 176         dcbcfg->pfc.mbc = (u8)((buf[0] & I40E_IEEE_PFC_MBC_MASK) >>
 177                                I40E_IEEE_PFC_MBC_SHIFT);
 178         dcbcfg->pfc.pfccap = (u8)((buf[0] & I40E_IEEE_PFC_CAP_MASK) >>
 179                                   I40E_IEEE_PFC_CAP_SHIFT);
 180         dcbcfg->pfc.pfcenable = buf[1];
 181 }
 182
 183 /**
 184  * i40e_parse_ieee_app_tlv
 185  * @tlv: IEEE 802.1Qaz APP TLV
 186  * @dcbcfg: Local store to update APP PRIO data
 187  *
 188  * Parses IEEE 802.1Qaz APP PRIO TLV
 189  **/
 190 static void i40e_parse_ieee_app_tlv(struct i40e_lldp_org_tlv *tlv,
 191                                     struct i40e_dcbx_config *dcbcfg)
 192 {
 193         u16 typelength;
 194         u16 offset = 0;
 195         u16 length;
 196         int i = 0;
 197         u8 *buf;
 198
 199         typelength = I40E_NTOHS(tlv->typelength);
 200         length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
 201                        I40E_LLDP_TLV_LEN_SHIFT);
 202         buf = tlv->tlvinfo;
 203
 204         /* The App priority table starts 5 octets after TLV header */
 205         length -= (sizeof(tlv->ouisubtype) + 1);
 206
 207         /* Move offset to App Priority Table */
 208         offset++;
 209
 210         /* Application Priority Table (3 octets)
 211          * Octets:|         1          |    2    |    3    |
 212          *        -----------------------------------------
 213          *        |Priority|Rsrvd| Sel |    Protocol ID    |
 214          *        -----------------------------------------
 215          *   Bits:|23    21|20 19|18 16|15                0|
 216          *        -----------------------------------------
 217          */
 218         while (offset < length) {
 219                 dcbcfg->app[i].priority = (u8)((buf[offset] &
 220                                                 I40E_IEEE_APP_PRIO_MASK) >>
 221                                                I40E_IEEE_APP_PRIO_SHIFT);
 222                 dcbcfg->app[i].selector = (u8)((buf[offset] &
 223                                                 I40E_IEEE_APP_SEL_MASK) >>
 224                                                I40E_IEEE_APP_SEL_SHIFT);
 225                 dcbcfg->app[i].protocolid = (buf[offset + 1] << 0x8) |
 226                                              buf[offset + 2];
 227                 /* Move to next app */
 228                 offset += 3;
 229                 i++;
 230                 if (i >= I40E_DCBX_MAX_APPS)
 231                         break;
 232         }
 233
 234         dcbcfg->numapps = i;
 235 }
 236
 237 /**
 238  * i40e_parse_ieee_etsrec_tlv
 239  * @tlv: IEEE 802.1Qaz TLV
 240  * @dcbcfg: Local store to update ETS REC data
 241  *
 242  * Get the TLV subtype and send it to parsing function
 243  * based on the subtype value
 244  **/
 245 static void i40e_parse_ieee_tlv(struct i40e_lldp_org_tlv *tlv,
 246                                 struct i40e_dcbx_config *dcbcfg)
 247 {
 248         u32 ouisubtype;
 249         u8 subtype;
 250
 251         ouisubtype = I40E_NTOHL(tlv->ouisubtype);
 252         subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
 253                        I40E_LLDP_TLV_SUBTYPE_SHIFT);
 254         switch (subtype) {
 255         case I40E_IEEE_SUBTYPE_ETS_CFG:
 256                 i40e_parse_ieee_etscfg_tlv(tlv, dcbcfg);
 257                 break;
 258         case I40E_IEEE_SUBTYPE_ETS_REC:
 259                 i40e_parse_ieee_etsrec_tlv(tlv, dcbcfg);
 260                 break;
 261         case I40E_IEEE_SUBTYPE_PFC_CFG:
 262                 i40e_parse_ieee_pfccfg_tlv(tlv, dcbcfg);
 263                 break;
 264         case I40E_IEEE_SUBTYPE_APP_PRI:
 265                 i40e_parse_ieee_app_tlv(tlv, dcbcfg);
 266                 break;
 267         default:
 268                 break;
 269         }
 270 }
 271
 272 /**
 273  * i40e_parse_cee_pgcfg_tlv
 274  * @tlv: CEE DCBX PG CFG TLV
 275  * @dcbcfg: Local store to update ETS CFG data
 276  *
 277  * Parses CEE DCBX PG CFG TLV
 278  **/
 279 static void i40e_parse_cee_pgcfg_tlv(struct i40e_cee_feat_tlv *tlv,
 280                                      struct i40e_dcbx_config *dcbcfg)
 281 {
 282         struct i40e_dcb_ets_config *etscfg;
 283         u8 *buf = tlv->tlvinfo;
 284         u16 offset = 0;
 285         u8 priority;
 286         int i;
 287
 288         etscfg = &dcbcfg->etscfg;
 289
 290         if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
 291                 etscfg->willing = 1;
 292
 293         etscfg->cbs = 0;
 294         /* Priority Group Table (4 octets)
 295          * Octets:|    1    |    2    |    3    |    4    |
 296          *        -----------------------------------------
 297          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 298          *        -----------------------------------------
 299          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 300          *        -----------------------------------------
 301          */
 302         for (i = 0; i < 4; i++) {
 303                 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_1_MASK) >>
 304                                  I40E_CEE_PGID_PRIO_1_SHIFT);
 305                 etscfg->prioritytable[i * 2] =  priority;
 306                 priority = (u8)((buf[offset] & I40E_CEE_PGID_PRIO_0_MASK) >>
 307                                  I40E_CEE_PGID_PRIO_0_SHIFT);
 308                 etscfg->prioritytable[i * 2 + 1] = priority;
 309                 offset++;
 310         }
 311
 312         /* PG Percentage Table (8 octets)
 313          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 314          *        ---------------------------------
 315          *        |pg0|pg1|pg2|pg3|pg4|pg5|pg6|pg7|
 316          *        ---------------------------------
 317          */
 318         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 319                 etscfg->tcbwtable[i] = buf[offset++];
 320
 321         /* Number of TCs supported (1 octet) */
 322         etscfg->maxtcs = buf[offset];
 323 }
 324
 325 /**
 326  * i40e_parse_cee_pfccfg_tlv
 327  * @tlv: CEE DCBX PFC CFG TLV
 328  * @dcbcfg: Local store to update PFC CFG data
 329  *
 330  * Parses CEE DCBX PFC CFG TLV
 331  **/
 332 static void i40e_parse_cee_pfccfg_tlv(struct i40e_cee_feat_tlv *tlv,
 333                                       struct i40e_dcbx_config *dcbcfg)
 334 {
 335         u8 *buf = tlv->tlvinfo;
 336
 337         if (tlv->en_will_err & I40E_CEE_FEAT_TLV_WILLING_MASK)
 338                 dcbcfg->pfc.willing = 1;
 339
 340         /* ------------------------
 341          * | PFC Enable | PFC TCs |
 342          * ------------------------
 343          * | 1 octet    | 1 octet |
 344          */
 345         dcbcfg->pfc.pfcenable = buf[0];
 346         dcbcfg->pfc.pfccap = buf[1];
 347 }
 348
 349 /**
 350  * i40e_parse_cee_app_tlv
 351  * @tlv: CEE DCBX APP TLV
 352  * @dcbcfg: Local store to update APP PRIO data
 353  *
 354  * Parses CEE DCBX APP PRIO TLV
 355  **/
 356 static void i40e_parse_cee_app_tlv(struct i40e_cee_feat_tlv *tlv,
 357                                    struct i40e_dcbx_config *dcbcfg)
 358 {
 359         u16 length, typelength, offset = 0;
 360         struct i40e_cee_app_prio *app;
 361         u8 i;
 362
 363         typelength = I40E_NTOHS(tlv->hdr.typelen);
 364         length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
 365                        I40E_LLDP_TLV_LEN_SHIFT);
 366
 367         dcbcfg->numapps = length / sizeof(*app);
 368         if (!dcbcfg->numapps)
 369                 return;
 370         if (dcbcfg->numapps > I40E_DCBX_MAX_APPS)
 371                 dcbcfg->numapps = I40E_DCBX_MAX_APPS;
 372
 373         for (i = 0; i < dcbcfg->numapps; i++) {
 374                 u8 up, selector;
 375
 376                 app = (struct i40e_cee_app_prio *)(tlv->tlvinfo + offset);
 377                 for (up = 0; up < I40E_MAX_USER_PRIORITY; up++) {
 378                         if (app->prio_map & BIT(up))
 379                                 break;
 380                 }
 381                 dcbcfg->app[i].priority = up;
 382
 383                 /* Get Selector from lower 2 bits, and convert to IEEE */
 384                 selector = (app->upper_oui_sel & I40E_CEE_APP_SELECTOR_MASK);
 385                 switch (selector) {
 386                 case I40E_CEE_APP_SEL_ETHTYPE:
 387                         dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
 388                         break;
 389                 case I40E_CEE_APP_SEL_TCPIP:
 390                         dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
 391                         break;
 392                 default:
 393                         /* Keep selector as it is for unknown types */
 394                         dcbcfg->app[i].selector = selector;
 395                 }
 396
 397                 dcbcfg->app[i].protocolid = I40E_NTOHS(app->protocol);
 398                 /* Move to next app */
 399                 offset += sizeof(*app);
 400         }
 401 }
 402
 403 /**
 404  * i40e_parse_cee_tlv
 405  * @tlv: CEE DCBX TLV
 406  * @dcbcfg: Local store to update DCBX config data
 407  *
 408  * Get the TLV subtype and send it to parsing function
 409  * based on the subtype value
 410  **/
 411 static void i40e_parse_cee_tlv(struct i40e_lldp_org_tlv *tlv,
 412                                struct i40e_dcbx_config *dcbcfg)
 413 {
 414         u16 len, tlvlen, sublen, typelength;
 415         struct i40e_cee_feat_tlv *sub_tlv;
 416         u8 subtype, feat_tlv_count = 0;
 417         u32 ouisubtype;
 418
 419         ouisubtype = I40E_NTOHL(tlv->ouisubtype);
 420         subtype = (u8)((ouisubtype & I40E_LLDP_TLV_SUBTYPE_MASK) >>
 421                        I40E_LLDP_TLV_SUBTYPE_SHIFT);
 422         /* Return if not CEE DCBX */
 423         if (subtype != I40E_CEE_DCBX_TYPE)
 424                 return;
 425
 426         typelength = I40E_NTOHS(tlv->typelength);
 427         tlvlen = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
 428                         I40E_LLDP_TLV_LEN_SHIFT);
 429         len = sizeof(tlv->typelength) + sizeof(ouisubtype) +
 430               sizeof(struct i40e_cee_ctrl_tlv);
 431         /* Return if no CEE DCBX Feature TLVs */
 432         if (tlvlen <= len)
 433                 return;
 434
 435         sub_tlv = (struct i40e_cee_feat_tlv *)((char *)tlv + len);
 436         while (feat_tlv_count < I40E_CEE_MAX_FEAT_TYPE) {
 437                 typelength = I40E_NTOHS(sub_tlv->hdr.typelen);
 438                 sublen = (u16)((typelength &
 439                                 I40E_LLDP_TLV_LEN_MASK) >>
 440                                 I40E_LLDP_TLV_LEN_SHIFT);
 441                 subtype = (u8)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
 442                                 I40E_LLDP_TLV_TYPE_SHIFT);
 443                 switch (subtype) {
 444                 case I40E_CEE_SUBTYPE_PG_CFG:
 445                         i40e_parse_cee_pgcfg_tlv(sub_tlv, dcbcfg);
 446                         break;
 447                 case I40E_CEE_SUBTYPE_PFC_CFG:
 448                         i40e_parse_cee_pfccfg_tlv(sub_tlv, dcbcfg);
 449                         break;
 450                 case I40E_CEE_SUBTYPE_APP_PRI:
 451                         i40e_parse_cee_app_tlv(sub_tlv, dcbcfg);
 452                         break;
 453                 default:
 454                         return; /* Invalid Sub-type return */
 455                 }
 456                 feat_tlv_count++;
 457                 /* Move to next sub TLV */
 458                 sub_tlv = (struct i40e_cee_feat_tlv *)((char *)sub_tlv +
 459                                                 sizeof(sub_tlv->hdr.typelen) +
 460                                                 sublen);
 461         }
 462 }
 463
 464 /**
 465  * i40e_parse_org_tlv
 466  * @tlv: Organization specific TLV
 467  * @dcbcfg: Local store to update ETS REC data
 468  *
 469  * Currently only IEEE 802.1Qaz TLV is supported, all others
 470  * will be returned
 471  **/
 472 static void i40e_parse_org_tlv(struct i40e_lldp_org_tlv *tlv,
 473                                struct i40e_dcbx_config *dcbcfg)
 474 {
 475         u32 ouisubtype;
 476         u32 oui;
 477
 478         ouisubtype = I40E_NTOHL(tlv->ouisubtype);
 479         oui = (u32)((ouisubtype & I40E_LLDP_TLV_OUI_MASK) >>
 480                     I40E_LLDP_TLV_OUI_SHIFT);
 481         switch (oui) {
 482         case I40E_IEEE_8021QAZ_OUI:
 483                 i40e_parse_ieee_tlv(tlv, dcbcfg);
 484                 break;
 485         case I40E_CEE_DCBX_OUI:
 486                 i40e_parse_cee_tlv(tlv, dcbcfg);
 487                 break;
 488         default:
 489                 break;
 490         }
 491 }
 492
 493 /**
 494  * i40e_lldp_to_dcb_config
 495  * @lldpmib: LLDPDU to be parsed
 496  * @dcbcfg: store for LLDPDU data
 497  *
 498  * Parse DCB configuration from the LLDPDU
 499  **/
 500 enum i40e_status_code i40e_lldp_to_dcb_config(u8 *lldpmib,
 501                                     struct i40e_dcbx_config *dcbcfg)
 502 {
 503         enum i40e_status_code ret = I40E_SUCCESS;
 504         struct i40e_lldp_org_tlv *tlv;
 505         u16 type;
 506         u16 length;
 507         u16 typelength;
 508         u16 offset = 0;
 509
 510         if (!lldpmib || !dcbcfg)
 511                 return I40E_ERR_PARAM;
 512
 513         /* set to the start of LLDPDU */
 514         lldpmib += I40E_LLDP_MIB_HLEN;
 515         tlv = (struct i40e_lldp_org_tlv *)lldpmib;
 516         while (1) {
 517                 typelength = I40E_NTOHS(tlv->typelength);
 518                 type = (u16)((typelength & I40E_LLDP_TLV_TYPE_MASK) >>
 519                              I40E_LLDP_TLV_TYPE_SHIFT);
 520                 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
 521                                I40E_LLDP_TLV_LEN_SHIFT);
 522                 offset += sizeof(typelength) + length;
 523
 524                 /* END TLV or beyond LLDPDU size */
 525                 if ((type == I40E_TLV_TYPE_END) || (offset > I40E_LLDPDU_SIZE))
 526                         break;
 527
 528                 switch (type) {
 529                 case I40E_TLV_TYPE_ORG:
 530                         i40e_parse_org_tlv(tlv, dcbcfg);
 531                         break;
 532                 default:
 533                         break;
 534                 }
 535
 536                 /* Move to next TLV */
 537                 tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
 538                                                     sizeof(tlv->typelength) +
 539                                                     length);
 540         }
 541
 542         return ret;
 543 }
 544
 545 /**
 546  * i40e_aq_get_dcb_config
 547  * @hw: pointer to the hw struct
 548  * @mib_type: mib type for the query
 549  * @bridgetype: bridge type for the query (remote)
 550  * @dcbcfg: store for LLDPDU data
 551  *
 552  * Query DCB configuration from the Firmware
 553  **/
 554 enum i40e_status_code i40e_aq_get_dcb_config(struct i40e_hw *hw, u8 mib_type,
 555                                    u8 bridgetype,
 556                                    struct i40e_dcbx_config *dcbcfg)
 557 {
 558         enum i40e_status_code ret = I40E_SUCCESS;
 559         struct i40e_virt_mem mem;
 560         u8 *lldpmib;
 561
 562         /* Allocate the LLDPDU */
 563         ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
 564         if (ret)
 565                 return ret;
 566
 567         lldpmib = (u8 *)mem.va;
 568         ret = i40e_aq_get_lldp_mib(hw, bridgetype, mib_type,
 569                                    (void *)lldpmib, I40E_LLDPDU_SIZE,
 570                                    NULL, NULL, NULL);
 571         if (ret)
 572                 goto free_mem;
 573
 574         /* Parse LLDP MIB to get dcb configuration */
 575         ret = i40e_lldp_to_dcb_config(lldpmib, dcbcfg);
 576
 577 free_mem:
 578         i40e_free_virt_mem(hw, &mem);
 579         return ret;
 580 }
 581
 582 /**
 583  * i40e_cee_to_dcb_v1_config
 584  * @cee_cfg: pointer to CEE v1 response configuration struct
 585  * @dcbcfg: DCB configuration struct
 586  *
 587  * Convert CEE v1 configuration from firmware to DCB configuration
 588  **/
 589 static void i40e_cee_to_dcb_v1_config(
 590                         struct i40e_aqc_get_cee_dcb_cfg_v1_resp *cee_cfg,
 591                         struct i40e_dcbx_config *dcbcfg)
 592 {
 593         u16 status, tlv_status = LE16_TO_CPU(cee_cfg->tlv_status);
 594         u16 app_prio = LE16_TO_CPU(cee_cfg->oper_app_prio);
 595         u8 i, tc, err;
 596
 597         /* CEE PG data to ETS config */
 598         dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
 599
 600         /* Note that the FW creates the oper_prio_tc nibbles reversed
 601          * from those in the CEE Priority Group sub-TLV.
 602          */
 603         for (i = 0; i < 4; i++) {
 604                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 605                          I40E_CEE_PGID_PRIO_0_MASK) >>
 606                          I40E_CEE_PGID_PRIO_0_SHIFT);
 607                 dcbcfg->etscfg.prioritytable[i*2] =  tc;
 608                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 609                          I40E_CEE_PGID_PRIO_1_MASK) >>
 610                          I40E_CEE_PGID_PRIO_1_SHIFT);
 611                 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
 612         }
 613
 614         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 615                 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
 616
 617         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 618                 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
 619                         /* Map it to next empty TC */
 620                         dcbcfg->etscfg.prioritytable[i] =
 621                                                 cee_cfg->oper_num_tc - 1;
 622                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
 623                 } else {
 624                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
 625                 }
 626         }
 627
 628         /* CEE PFC data to ETS config */
 629         dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
 630         dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
 631
 632         status = (tlv_status & I40E_AQC_CEE_APP_STATUS_MASK) >>
 633                   I40E_AQC_CEE_APP_STATUS_SHIFT;
 634         err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
 635         /* Add APPs if Error is False */
 636         if (!err) {
 637                 /* CEE operating configuration supports FCoE/iSCSI/FIP only */
 638                 dcbcfg->numapps = I40E_CEE_OPER_MAX_APPS;
 639
 640                 /* FCoE APP */
 641                 dcbcfg->app[0].priority =
 642                         (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
 643                          I40E_AQC_CEE_APP_FCOE_SHIFT;
 644                 dcbcfg->app[0].selector = I40E_APP_SEL_ETHTYPE;
 645                 dcbcfg->app[0].protocolid = I40E_APP_PROTOID_FCOE;
 646
 647                 /* iSCSI APP */
 648                 dcbcfg->app[1].priority =
 649                         (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
 650                          I40E_AQC_CEE_APP_ISCSI_SHIFT;
 651                 dcbcfg->app[1].selector = I40E_APP_SEL_TCPIP;
 652                 dcbcfg->app[1].protocolid = I40E_APP_PROTOID_ISCSI;
 653
 654                 /* FIP APP */
 655                 dcbcfg->app[2].priority =
 656                         (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
 657                          I40E_AQC_CEE_APP_FIP_SHIFT;
 658                 dcbcfg->app[2].selector = I40E_APP_SEL_ETHTYPE;
 659                 dcbcfg->app[2].protocolid = I40E_APP_PROTOID_FIP;
 660         }
 661 }
 662
 663 /**
 664  * i40e_cee_to_dcb_config
 665  * @cee_cfg: pointer to CEE configuration struct
 666  * @dcbcfg: DCB configuration struct
 667  *
 668  * Convert CEE configuration from firmware to DCB configuration
 669  **/
 670 static void i40e_cee_to_dcb_config(
 671                                 struct i40e_aqc_get_cee_dcb_cfg_resp *cee_cfg,
 672                                 struct i40e_dcbx_config *dcbcfg)
 673 {
 674         u32 status, tlv_status = LE32_TO_CPU(cee_cfg->tlv_status);
 675         u16 app_prio = LE16_TO_CPU(cee_cfg->oper_app_prio);
 676         u8 i, tc, err, sync, oper;
 677
 678         /* CEE PG data to ETS config */
 679         dcbcfg->etscfg.maxtcs = cee_cfg->oper_num_tc;
 680
 681         /* Note that the FW creates the oper_prio_tc nibbles reversed
 682          * from those in the CEE Priority Group sub-TLV.
 683          */
 684         for (i = 0; i < 4; i++) {
 685                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 686                          I40E_CEE_PGID_PRIO_0_MASK) >>
 687                          I40E_CEE_PGID_PRIO_0_SHIFT);
 688                 dcbcfg->etscfg.prioritytable[i*2] =  tc;
 689                 tc = (u8)((cee_cfg->oper_prio_tc[i] &
 690                          I40E_CEE_PGID_PRIO_1_MASK) >>
 691                          I40E_CEE_PGID_PRIO_1_SHIFT);
 692                 dcbcfg->etscfg.prioritytable[i*2 + 1] = tc;
 693         }
 694
 695         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 696                 dcbcfg->etscfg.tcbwtable[i] = cee_cfg->oper_tc_bw[i];
 697
 698         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++) {
 699                 if (dcbcfg->etscfg.prioritytable[i] == I40E_CEE_PGID_STRICT) {
 700                         /* Map it to next empty TC */
 701                         dcbcfg->etscfg.prioritytable[i] =
 702                                                 cee_cfg->oper_num_tc - 1;
 703                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_STRICT;
 704                 } else {
 705                         dcbcfg->etscfg.tsatable[i] = I40E_IEEE_TSA_ETS;
 706                 }
 707         }
 708
 709         /* CEE PFC data to ETS config */
 710         dcbcfg->pfc.pfcenable = cee_cfg->oper_pfc_en;
 711         dcbcfg->pfc.pfccap = I40E_MAX_TRAFFIC_CLASS;
 712
 713         i = 0;
 714         status = (tlv_status & I40E_AQC_CEE_FCOE_STATUS_MASK) >>
 715                   I40E_AQC_CEE_FCOE_STATUS_SHIFT;
 716         err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
 717         sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
 718         oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
 719         /* Add FCoE APP if Error is False and Oper/Sync is True */
 720         if (!err && sync && oper) {
 721                 /* FCoE APP */
 722                 dcbcfg->app[i].priority =
 723                         (app_prio & I40E_AQC_CEE_APP_FCOE_MASK) >>
 724                          I40E_AQC_CEE_APP_FCOE_SHIFT;
 725                 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
 726                 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FCOE;
 727                 i++;
 728         }
 729
 730         status = (tlv_status & I40E_AQC_CEE_ISCSI_STATUS_MASK) >>
 731                   I40E_AQC_CEE_ISCSI_STATUS_SHIFT;
 732         err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
 733         sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
 734         oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
 735         /* Add iSCSI APP if Error is False and Oper/Sync is True */
 736         if (!err && sync && oper) {
 737                 /* iSCSI APP */
 738                 dcbcfg->app[i].priority =
 739                         (app_prio & I40E_AQC_CEE_APP_ISCSI_MASK) >>
 740                          I40E_AQC_CEE_APP_ISCSI_SHIFT;
 741                 dcbcfg->app[i].selector = I40E_APP_SEL_TCPIP;
 742                 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_ISCSI;
 743                 i++;
 744         }
 745
 746         status = (tlv_status & I40E_AQC_CEE_FIP_STATUS_MASK) >>
 747                   I40E_AQC_CEE_FIP_STATUS_SHIFT;
 748         err = (status & I40E_TLV_STATUS_ERR) ? 1 : 0;
 749         sync = (status & I40E_TLV_STATUS_SYNC) ? 1 : 0;
 750         oper = (status & I40E_TLV_STATUS_OPER) ? 1 : 0;
 751         /* Add FIP APP if Error is False and Oper/Sync is True */
 752         if (!err && sync && oper) {
 753                 /* FIP APP */
 754                 dcbcfg->app[i].priority =
 755                         (app_prio & I40E_AQC_CEE_APP_FIP_MASK) >>
 756                          I40E_AQC_CEE_APP_FIP_SHIFT;
 757                 dcbcfg->app[i].selector = I40E_APP_SEL_ETHTYPE;
 758                 dcbcfg->app[i].protocolid = I40E_APP_PROTOID_FIP;
 759                 i++;
 760         }
 761         dcbcfg->numapps = i;
 762 }
 763
 764 /**
 765  * i40e_get_ieee_dcb_config
 766  * @hw: pointer to the hw struct
 767  *
 768  * Get IEEE mode DCB configuration from the Firmware
 769  **/
 770 STATIC enum i40e_status_code i40e_get_ieee_dcb_config(struct i40e_hw *hw)
 771 {
 772         enum i40e_status_code ret = I40E_SUCCESS;
 773
 774         /* IEEE mode */
 775         hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_IEEE;
 776         /* Get Local DCB Config */
 777         ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
 778                                      &hw->local_dcbx_config);
 779         if (ret)
 780                 goto out;
 781
 782         /* Get Remote DCB Config */
 783         ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
 784                                      I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
 785                                      &hw->remote_dcbx_config);
 786         /* Don't treat ENOENT as an error for Remote MIBs */
 787         if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
 788                 ret = I40E_SUCCESS;
 789
 790 out:
 791         return ret;
 792 }
 793
 794 /**
 795  * i40e_get_dcb_config
 796  * @hw: pointer to the hw struct
 797  *
 798  * Get DCB configuration from the Firmware
 799  **/
 800 enum i40e_status_code i40e_get_dcb_config(struct i40e_hw *hw)
 801 {
 802         enum i40e_status_code ret = I40E_SUCCESS;
 803         struct i40e_aqc_get_cee_dcb_cfg_resp cee_cfg;
 804         struct i40e_aqc_get_cee_dcb_cfg_v1_resp cee_v1_cfg;
 805
 806         /* If Firmware version < v4.33 on X710/XL710, IEEE only */
 807         if ((hw->mac.type == I40E_MAC_XL710) &&
 808             (((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver < 33)) ||
 809               (hw->aq.fw_maj_ver < 4)))
 810                 return i40e_get_ieee_dcb_config(hw);
 811
 812         /* If Firmware version == v4.33 on X710/XL710, use old CEE struct */
 813         if ((hw->mac.type == I40E_MAC_XL710) &&
 814             ((hw->aq.fw_maj_ver == 4) && (hw->aq.fw_min_ver == 33))) {
 815                 ret = i40e_aq_get_cee_dcb_config(hw, &cee_v1_cfg,
 816                                                  sizeof(cee_v1_cfg), NULL);
 817                 if (ret == I40E_SUCCESS) {
 818                         /* CEE mode */
 819                         hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
 820                         hw->local_dcbx_config.tlv_status =
 821                                         LE16_TO_CPU(cee_v1_cfg.tlv_status);
 822                         i40e_cee_to_dcb_v1_config(&cee_v1_cfg,
 823                                                   &hw->local_dcbx_config);
 824                 }
 825         } else {
 826                 ret = i40e_aq_get_cee_dcb_config(hw, &cee_cfg,
 827                                                  sizeof(cee_cfg), NULL);
 828                 if (ret == I40E_SUCCESS) {
 829                         /* CEE mode */
 830                         hw->local_dcbx_config.dcbx_mode = I40E_DCBX_MODE_CEE;
 831                         hw->local_dcbx_config.tlv_status =
 832                                         LE32_TO_CPU(cee_cfg.tlv_status);
 833                         i40e_cee_to_dcb_config(&cee_cfg,
 834                                                &hw->local_dcbx_config);
 835                 }
 836         }
 837
 838         /* CEE mode not enabled try querying IEEE data */
 839         if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
 840                 return i40e_get_ieee_dcb_config(hw);
 841
 842         if (ret != I40E_SUCCESS)
 843                 goto out;
 844
 845         /* Get CEE DCB Desired Config */
 846         ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_LOCAL, 0,
 847                                      &hw->desired_dcbx_config);
 848         if (ret)
 849                 goto out;
 850
 851         /* Get Remote DCB Config */
 852         ret = i40e_aq_get_dcb_config(hw, I40E_AQ_LLDP_MIB_REMOTE,
 853                              I40E_AQ_LLDP_BRIDGE_TYPE_NEAREST_BRIDGE,
 854                              &hw->remote_dcbx_config);
 855         /* Don't treat ENOENT as an error for Remote MIBs */
 856         if (hw->aq.asq_last_status == I40E_AQ_RC_ENOENT)
 857                 ret = I40E_SUCCESS;
 858
 859 out:
 860         return ret;
 861 }
 862
 863 /**
 864  * i40e_init_dcb
 865  * @hw: pointer to the hw struct
 866  * @enable_mib_change: enable mib change event
 867  *
 868  * Update DCB configuration from the Firmware
 869  **/
 870 enum i40e_status_code i40e_init_dcb(struct i40e_hw *hw, bool enable_mib_change)
 871 {
 872         enum i40e_status_code ret = I40E_SUCCESS;
 873         struct i40e_lldp_variables lldp_cfg;
 874         u8 adminstatus = 0;
 875
 876         if (!hw->func_caps.dcb)
 877                 return I40E_NOT_SUPPORTED;
 878
 879         /* Read LLDP NVM area */
 880         ret = i40e_read_lldp_cfg(hw, &lldp_cfg);
 881         if (ret)
 882                 return I40E_ERR_NOT_READY;
 883
 884         /* Get the LLDP AdminStatus for the current port */
 885         adminstatus = lldp_cfg.adminstatus >> (hw->port * 4);
 886         adminstatus &= 0xF;
 887
 888         /* LLDP agent disabled */
 889         if (!adminstatus) {
 890                 hw->dcbx_status = I40E_DCBX_STATUS_DISABLED;
 891                 return I40E_ERR_NOT_READY;
 892         }
 893
 894         /* Get DCBX status */
 895         ret = i40e_get_dcbx_status(hw, &hw->dcbx_status);
 896         if (ret)
 897                 return ret;
 898
 899         /* Check the DCBX Status */
 900         if (hw->dcbx_status == I40E_DCBX_STATUS_DONE ||
 901             hw->dcbx_status == I40E_DCBX_STATUS_IN_PROGRESS) {
 902                 /* Get current DCBX configuration */
 903                 ret = i40e_get_dcb_config(hw);
 904                 if (ret)
 905                         return ret;
 906         } else if (hw->dcbx_status == I40E_DCBX_STATUS_DISABLED) {
 907                 return I40E_ERR_NOT_READY;
 908         }
 909
 910         /* Configure the LLDP MIB change event */
 911         if (enable_mib_change)
 912                 ret = i40e_aq_cfg_lldp_mib_change_event(hw, true, NULL);
 913
 914         return ret;
 915 }
 916
 917 /**
 918  * i40e_add_ieee_ets_tlv - Prepare ETS TLV in IEEE format
 919  * @tlv: Fill the ETS config data in IEEE format
 920  * @dcbcfg: Local store which holds the DCB Config
 921  *
 922  * Prepare IEEE 802.1Qaz ETS CFG TLV
 923  **/
 924 static void i40e_add_ieee_ets_tlv(struct i40e_lldp_org_tlv *tlv,
 925                                   struct i40e_dcbx_config *dcbcfg)
 926 {
 927         u8 priority0, priority1, maxtcwilling = 0;
 928         struct i40e_dcb_ets_config *etscfg;
 929         u16 offset = 0, typelength, i;
 930         u8 *buf = tlv->tlvinfo;
 931         u32 ouisubtype;
 932
 933         typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
 934                         I40E_IEEE_ETS_TLV_LENGTH);
 935         tlv->typelength = I40E_HTONS(typelength);
 936
 937         ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
 938                         I40E_IEEE_SUBTYPE_ETS_CFG);
 939         tlv->ouisubtype = I40E_HTONL(ouisubtype);
 940
 941         /* First Octet post subtype
 942          * --------------------------
 943          * |will-|CBS  | Re-  | Max |
 944          * |ing  |     |served| TCs |
 945          * --------------------------
 946          * |1bit | 1bit|3 bits|3bits|
 947          */
 948         etscfg = &dcbcfg->etscfg;
 949         if (etscfg->willing)
 950                 maxtcwilling = BIT(I40E_IEEE_ETS_WILLING_SHIFT);
 951         maxtcwilling |= etscfg->maxtcs & I40E_IEEE_ETS_MAXTC_MASK;
 952         buf[offset] = maxtcwilling;
 953
 954         /* Move offset to Priority Assignment Table */
 955         offset++;
 956
 957         /* Priority Assignment Table (4 octets)
 958          * Octets:|    1    |    2    |    3    |    4    |
 959          *        -----------------------------------------
 960          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
 961          *        -----------------------------------------
 962          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
 963          *        -----------------------------------------
 964          */
 965         for (i = 0; i < 4; i++) {
 966                 priority0 = etscfg->prioritytable[i * 2] & 0xF;
 967                 priority1 = etscfg->prioritytable[i * 2 + 1] & 0xF;
 968                 buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
 969                                 priority1;
 970                 offset++;
 971         }
 972
 973         /* TC Bandwidth Table (8 octets)
 974          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 975          *        ---------------------------------
 976          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 977          *        ---------------------------------
 978          */
 979         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 980                 buf[offset++] = etscfg->tcbwtable[i];
 981
 982         /* TSA Assignment Table (8 octets)
 983          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
 984          *        ---------------------------------
 985          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
 986          *        ---------------------------------
 987          */
 988         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
 989                 buf[offset++] = etscfg->tsatable[i];
 990 }
 991
 992 /**
 993  * i40e_add_ieee_etsrec_tlv - Prepare ETS Recommended TLV in IEEE format
 994  * @tlv: Fill ETS Recommended TLV in IEEE format
 995  * @dcbcfg: Local store which holds the DCB Config
 996  *
 997  * Prepare IEEE 802.1Qaz ETS REC TLV
 998  **/
 999 static void i40e_add_ieee_etsrec_tlv(struct i40e_lldp_org_tlv *tlv,
1000                                      struct i40e_dcbx_config *dcbcfg)
1001 {
1002         struct i40e_dcb_ets_config *etsrec;
1003         u16 offset = 0, typelength, i;
1004         u8 priority0, priority1;
1005         u8 *buf = tlv->tlvinfo;
1006         u32 ouisubtype;
1007
1008         typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
1009                         I40E_IEEE_ETS_TLV_LENGTH);
1010         tlv->typelength = I40E_HTONS(typelength);
1011
1012         ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
1013                         I40E_IEEE_SUBTYPE_ETS_REC);
1014         tlv->ouisubtype = I40E_HTONL(ouisubtype);
1015
1016         etsrec = &dcbcfg->etsrec;
1017         /* First Octet is reserved */
1018         /* Move offset to Priority Assignment Table */
1019         offset++;
1020
1021         /* Priority Assignment Table (4 octets)
1022          * Octets:|    1    |    2    |    3    |    4    |
1023          *        -----------------------------------------
1024          *        |pri0|pri1|pri2|pri3|pri4|pri5|pri6|pri7|
1025          *        -----------------------------------------
1026          *   Bits:|7  4|3  0|7  4|3  0|7  4|3  0|7  4|3  0|
1027          *        -----------------------------------------
1028          */
1029         for (i = 0; i < 4; i++) {
1030                 priority0 = etsrec->prioritytable[i * 2] & 0xF;
1031                 priority1 = etsrec->prioritytable[i * 2 + 1] & 0xF;
1032                 buf[offset] = (priority0 << I40E_IEEE_ETS_PRIO_1_SHIFT) |
1033                                 priority1;
1034                 offset++;
1035         }
1036
1037         /* TC Bandwidth Table (8 octets)
1038          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1039          *        ---------------------------------
1040          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1041          *        ---------------------------------
1042          */
1043         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
1044                 buf[offset++] = etsrec->tcbwtable[i];
1045
1046         /* TSA Assignment Table (8 octets)
1047          * Octets:| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
1048          *        ---------------------------------
1049          *        |tc0|tc1|tc2|tc3|tc4|tc5|tc6|tc7|
1050          *        ---------------------------------
1051          */
1052         for (i = 0; i < I40E_MAX_TRAFFIC_CLASS; i++)
1053                 buf[offset++] = etsrec->tsatable[i];
1054 }
1055
1056  /**
1057  * i40e_add_ieee_pfc_tlv - Prepare PFC TLV in IEEE format
1058  * @tlv: Fill PFC TLV in IEEE format
1059  * @dcbcfg: Local store to get PFC CFG data
1060  *
1061  * Prepare IEEE 802.1Qaz PFC CFG TLV
1062  **/
1063 static void i40e_add_ieee_pfc_tlv(struct i40e_lldp_org_tlv *tlv,
1064                                   struct i40e_dcbx_config *dcbcfg)
1065 {
1066         u8 *buf = tlv->tlvinfo;
1067         u32 ouisubtype;
1068         u16 typelength;
1069
1070         typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
1071                         I40E_IEEE_PFC_TLV_LENGTH);
1072         tlv->typelength = I40E_HTONS(typelength);
1073
1074         ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
1075                         I40E_IEEE_SUBTYPE_PFC_CFG);
1076         tlv->ouisubtype = I40E_HTONL(ouisubtype);
1077
1078         /* ----------------------------------------
1079          * |will-|MBC  | Re-  | PFC |  PFC Enable  |
1080          * |ing  |     |served| cap |              |
1081          * -----------------------------------------
1082          * |1bit | 1bit|2 bits|4bits| 1 octet      |
1083          */
1084         if (dcbcfg->pfc.willing)
1085                 buf[0] = BIT(I40E_IEEE_PFC_WILLING_SHIFT);
1086
1087         if (dcbcfg->pfc.mbc)
1088                 buf[0] |= BIT(I40E_IEEE_PFC_MBC_SHIFT);
1089
1090         buf[0] |= dcbcfg->pfc.pfccap & 0xF;
1091         buf[1] = dcbcfg->pfc.pfcenable;
1092 }
1093
1094 /**
1095  * i40e_add_ieee_app_pri_tlv -  Prepare APP TLV in IEEE format
1096  * @tlv: Fill APP TLV in IEEE format
1097  * @dcbcfg: Local store to get APP CFG data
1098  *
1099  * Prepare IEEE 802.1Qaz APP CFG TLV
1100  **/
1101 static void i40e_add_ieee_app_pri_tlv(struct i40e_lldp_org_tlv *tlv,
1102                                       struct i40e_dcbx_config *dcbcfg)
1103 {
1104         u16 typelength, length, offset = 0;
1105         u8 priority, selector, i = 0;
1106         u8 *buf = tlv->tlvinfo;
1107         u32 ouisubtype;
1108
1109         /* No APP TLVs then just return */
1110         if (dcbcfg->numapps == 0)
1111                 return;
1112         ouisubtype = (u32)((I40E_IEEE_8021QAZ_OUI << I40E_LLDP_TLV_OUI_SHIFT) |
1113                         I40E_IEEE_SUBTYPE_APP_PRI);
1114         tlv->ouisubtype = I40E_HTONL(ouisubtype);
1115
1116         /* Move offset to App Priority Table */
1117         offset++;
1118         /* Application Priority Table (3 octets)
1119          * Octets:|         1          |    2    |    3    |
1120          *        -----------------------------------------
1121          *        |Priority|Rsrvd| Sel |    Protocol ID    |
1122          *        -----------------------------------------
1123          *   Bits:|23    21|20 19|18 16|15                0|
1124          *        -----------------------------------------
1125          */
1126         while (i < dcbcfg->numapps) {
1127                 priority = dcbcfg->app[i].priority & 0x7;
1128                 selector = dcbcfg->app[i].selector & 0x7;
1129                 buf[offset] = (priority << I40E_IEEE_APP_PRIO_SHIFT) | selector;
1130                 buf[offset + 1] = (dcbcfg->app[i].protocolid >> 0x8) & 0xFF;
1131                 buf[offset + 2] =  dcbcfg->app[i].protocolid & 0xFF;
1132                 /* Move to next app */
1133                 offset += 3;
1134                 i++;
1135                 if (i >= I40E_DCBX_MAX_APPS)
1136                         break;
1137         }
1138         /* length includes size of ouisubtype + 1 reserved + 3*numapps */
1139         length = sizeof(tlv->ouisubtype) + 1 + (i*3);
1140         typelength = (u16)((I40E_TLV_TYPE_ORG << I40E_LLDP_TLV_TYPE_SHIFT) |
1141                 (length & 0x1FF));
1142         tlv->typelength = I40E_HTONS(typelength);
1143 }
1144
1145  /**
1146  * i40e_add_dcb_tlv - Add all IEEE TLVs
1147  * @tlv: pointer to org tlv
1148  *
1149  * add tlv information
1150  **/
1151 static void i40e_add_dcb_tlv(struct i40e_lldp_org_tlv *tlv,
1152                              struct i40e_dcbx_config *dcbcfg,
1153                              u16 tlvid)
1154 {
1155         switch (tlvid) {
1156         case I40E_IEEE_TLV_ID_ETS_CFG:
1157                 i40e_add_ieee_ets_tlv(tlv, dcbcfg);
1158                 break;
1159         case I40E_IEEE_TLV_ID_ETS_REC:
1160                 i40e_add_ieee_etsrec_tlv(tlv, dcbcfg);
1161                 break;
1162         case I40E_IEEE_TLV_ID_PFC_CFG:
1163                 i40e_add_ieee_pfc_tlv(tlv, dcbcfg);
1164                 break;
1165         case I40E_IEEE_TLV_ID_APP_PRI:
1166                 i40e_add_ieee_app_pri_tlv(tlv, dcbcfg);
1167                 break;
1168         default:
1169                 break;
1170         }
1171 }
1172
1173  /**
1174  * i40e_set_dcb_config - Set the local LLDP MIB to FW
1175  * @hw: pointer to the hw struct
1176  *
1177  * Set DCB configuration to the Firmware
1178  **/
1179 enum i40e_status_code i40e_set_dcb_config(struct i40e_hw *hw)
1180 {
1181         enum i40e_status_code ret = I40E_SUCCESS;
1182         struct i40e_dcbx_config *dcbcfg;
1183         struct i40e_virt_mem mem;
1184         u8 mib_type, *lldpmib;
1185         u16 miblen;
1186
1187         /* update the hw local config */
1188         dcbcfg = &hw->local_dcbx_config;
1189         /* Allocate the LLDPDU */
1190         ret = i40e_allocate_virt_mem(hw, &mem, I40E_LLDPDU_SIZE);
1191         if (ret)
1192                 return ret;
1193
1194         mib_type = SET_LOCAL_MIB_AC_TYPE_LOCAL_MIB;
1195         if (dcbcfg->app_mode == I40E_DCBX_APPS_NON_WILLING) {
1196                 mib_type |= SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS <<
1197                             SET_LOCAL_MIB_AC_TYPE_NON_WILLING_APPS_SHIFT;
1198         }
1199         lldpmib = (u8 *)mem.va;
1200         ret = i40e_dcb_config_to_lldp(lldpmib, &miblen, dcbcfg);
1201         ret = i40e_aq_set_lldp_mib(hw, mib_type, (void *)lldpmib, miblen, NULL);
1202
1203         i40e_free_virt_mem(hw, &mem);
1204         return ret;
1205 }
1206
1207 /**
1208  * i40e_dcb_config_to_lldp - Convert Dcbconfig to MIB format
1209  * @hw: pointer to the hw struct
1210  * @dcbcfg: store for LLDPDU data
1211  *
1212  * send DCB configuration to FW
1213  **/
1214 enum i40e_status_code i40e_dcb_config_to_lldp(u8 *lldpmib, u16 *miblen,
1215                                               struct i40e_dcbx_config *dcbcfg)
1216 {
1217         u16 length, offset = 0, tlvid = I40E_TLV_ID_START;
1218         enum i40e_status_code ret = I40E_SUCCESS;
1219         struct i40e_lldp_org_tlv *tlv;
1220         u16 typelength;
1221
1222         tlv = (struct i40e_lldp_org_tlv *)lldpmib;
1223         while (1) {
1224                 i40e_add_dcb_tlv(tlv, dcbcfg, tlvid++);
1225                 typelength = I40E_NTOHS(tlv->typelength);
1226                 length = (u16)((typelength & I40E_LLDP_TLV_LEN_MASK) >>
1227                                 I40E_LLDP_TLV_LEN_SHIFT);
1228                 if (length)
1229                         offset += length + 2;
1230                 /* END TLV or beyond LLDPDU size */
1231                 if ((tlvid >= I40E_TLV_ID_END_OF_LLDPPDU) ||
1232                     (offset > I40E_LLDPDU_SIZE))
1233                         break;
1234                 /* Move to next TLV */
1235                 if (length)
1236                         tlv = (struct i40e_lldp_org_tlv *)((char *)tlv +
1237                               sizeof(tlv->typelength) + length);
1238         }
1239         *miblen = offset;
1240         return ret;
1241 }
1242
1243
1244 /**
1245  * _i40e_read_lldp_cfg - generic read of LLDP Configuration data from NVM
1246  * @hw: pointer to the HW structure
1247  * @lldp_cfg: pointer to hold lldp configuration variables
1248  * @module: address of the module pointer
1249  * @word_offset: offset of LLDP configuration
1250  *
1251  * Reads the LLDP configuration data from NVM using passed addresses
1252  **/
1253 static enum i40e_status_code _i40e_read_lldp_cfg(struct i40e_hw *hw,
1254                                           struct i40e_lldp_variables *lldp_cfg,
1255                                           u8 module, u32 word_offset)
1256 {
1257         u32 address, offset = (2 * word_offset);
1258         enum i40e_status_code ret;
1259         __le16 raw_mem;
1260         u16 mem;
1261
1262         ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1263         if (ret != I40E_SUCCESS)
1264                 return ret;
1265
1266         ret = i40e_aq_read_nvm(hw, 0x0, module * 2, sizeof(raw_mem), &raw_mem,
1267                                true, NULL);
1268         i40e_release_nvm(hw);
1269         if (ret != I40E_SUCCESS)
1270                 return ret;
1271
1272         mem = LE16_TO_CPU(raw_mem);
1273         /* Check if this pointer needs to be read in word size or 4K sector
1274          * units.
1275          */
1276         if (mem & I40E_PTR_TYPE)
1277                 address = (0x7FFF & mem) * 4096;
1278         else
1279                 address = (0x7FFF & mem) * 2;
1280
1281         ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1282         if (ret != I40E_SUCCESS)
1283                 goto err_lldp_cfg;
1284
1285         ret = i40e_aq_read_nvm(hw, module, offset, sizeof(raw_mem), &raw_mem,
1286                                true, NULL);
1287         i40e_release_nvm(hw);
1288         if (ret != I40E_SUCCESS)
1289                 return ret;
1290
1291         mem = LE16_TO_CPU(raw_mem);
1292         offset = mem + word_offset;
1293         offset *= 2;
1294
1295         ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1296         if (ret != I40E_SUCCESS)
1297                 goto err_lldp_cfg;
1298
1299         ret = i40e_aq_read_nvm(hw, 0, address + offset,
1300                                sizeof(struct i40e_lldp_variables), lldp_cfg,
1301                                true, NULL);
1302         i40e_release_nvm(hw);
1303
1304 err_lldp_cfg:
1305         return ret;
1306 }
1307
1308 /**
1309  * i40e_read_lldp_cfg - read LLDP Configuration data from NVM
1310  * @hw: pointer to the HW structure
1311  * @lldp_cfg: pointer to hold lldp configuration variables
1312  *
1313  * Reads the LLDP configuration data from NVM
1314  **/
1315 enum i40e_status_code i40e_read_lldp_cfg(struct i40e_hw *hw,
1316                                          struct i40e_lldp_variables *lldp_cfg)
1317 {
1318         enum i40e_status_code ret = I40E_SUCCESS;
1319         u32 mem;
1320
1321         if (!lldp_cfg)
1322                 return I40E_ERR_PARAM;
1323
1324         ret = i40e_acquire_nvm(hw, I40E_RESOURCE_READ);
1325         if (ret != I40E_SUCCESS)
1326                 return ret;
1327
1328         ret = i40e_aq_read_nvm(hw, I40E_SR_NVM_CONTROL_WORD, 0, sizeof(mem),
1329                                &mem, true, NULL);
1330         i40e_release_nvm(hw);
1331         if (ret != I40E_SUCCESS)
1332                 return ret;
1333
1334         /* Read a bit that holds information whether we are running flat or
1335          * structured NVM image. Flat image has LLDP configuration in shadow
1336          * ram, so there is a need to pass different addresses for both cases.
1337          */
1338         if (mem & I40E_SR_NVM_MAP_STRUCTURE_TYPE) {
1339                 /* Flat NVM case */
1340                 ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_SR_EMP_MODULE_PTR,
1341                                           I40E_SR_LLDP_CFG_PTR);
1342         } else {
1343                 /* Good old structured NVM image */
1344                 ret = _i40e_read_lldp_cfg(hw, lldp_cfg, I40E_EMP_MODULE_PTR,
1345                                           I40E_NVM_LLDP_CFG_PTR);
1346         }
1347
1348         return ret;
1349 }