drivers/net/ethernet/qlogic/qed/qed_dcbx.c

   1 /* QLogic qed NIC Driver
   2  * Copyright (c) 2015 QLogic Corporation
   3  *
   4  * This software is available under the terms of the GNU General Public License
   5  * (GPL) Version 2, available from the file COPYING in the main directory of
   6  * this source tree.
   7  */
   8
   9 #include <linux/types.h>
  10 #include <asm/byteorder.h>
  11 #include <linux/bitops.h>
  12 #include <linux/errno.h>
  13 #include <linux/kernel.h>
  14 #include <linux/slab.h>
  15 #include <linux/string.h>
  16 #include "qed.h"
  17 #include "qed_cxt.h"
  18 #include "qed_dcbx.h"
  19 #include "qed_hsi.h"
  20 #include "qed_sp.h"
  21
  22 #define QED_DCBX_MAX_MIB_READ_TRY       (100)
  23 #define QED_ETH_TYPE_DEFAULT            (0)
  24 #define QED_ETH_TYPE_ROCE               (0x8915)
  25 #define QED_UDP_PORT_TYPE_ROCE_V2       (0x12B7)
  26 #define QED_ETH_TYPE_FCOE               (0x8906)
  27 #define QED_TCP_PORT_ISCSI              (0xCBC)
  28
  29 #define QED_DCBX_INVALID_PRIORITY       0xFF
  30
  31 /* Get Traffic Class from priority traffic class table, 4 bits represent
  32  * the traffic class corresponding to the priority.
  33  */
  34 #define QED_DCBX_PRIO2TC(prio_tc_tbl, prio) \
  35         ((u32)(prio_tc_tbl >> ((7 - prio) * 4)) & 0x7)
  36
  37 static const struct qed_dcbx_app_metadata qed_dcbx_app_update[] = {
  38         {DCBX_PROTOCOL_ISCSI, "ISCSI", QED_PCI_DEFAULT},
  39         {DCBX_PROTOCOL_FCOE, "FCOE", QED_PCI_DEFAULT},
  40         {DCBX_PROTOCOL_ROCE, "ROCE", QED_PCI_DEFAULT},
  41         {DCBX_PROTOCOL_ROCE_V2, "ROCE_V2", QED_PCI_DEFAULT},
  42         {DCBX_PROTOCOL_ETH, "ETH", QED_PCI_ETH}
  43 };
  44
  45 static bool qed_dcbx_app_ethtype(u32 app_info_bitmap)
  46 {
  47         return !!(QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
  48                   DCBX_APP_SF_ETHTYPE);
  49 }
  50
  51 static bool qed_dcbx_app_port(u32 app_info_bitmap)
  52 {
  53         return !!(QED_MFW_GET_FIELD(app_info_bitmap, DCBX_APP_SF) ==
  54                   DCBX_APP_SF_PORT);
  55 }
  56
  57 static bool qed_dcbx_default_tlv(u32 app_info_bitmap, u16 proto_id)
  58 {
  59         return !!(qed_dcbx_app_ethtype(app_info_bitmap) &&
  60                   proto_id == QED_ETH_TYPE_DEFAULT);
  61 }
  62
  63 static bool qed_dcbx_iscsi_tlv(u32 app_info_bitmap, u16 proto_id)
  64 {
  65         return !!(qed_dcbx_app_port(app_info_bitmap) &&
  66                   proto_id == QED_TCP_PORT_ISCSI);
  67 }
  68
  69 static bool qed_dcbx_fcoe_tlv(u32 app_info_bitmap, u16 proto_id)
  70 {
  71         return !!(qed_dcbx_app_ethtype(app_info_bitmap) &&
  72                   proto_id == QED_ETH_TYPE_FCOE);
  73 }
  74
  75 static bool qed_dcbx_roce_tlv(u32 app_info_bitmap, u16 proto_id)
  76 {
  77         return !!(qed_dcbx_app_ethtype(app_info_bitmap) &&
  78                   proto_id == QED_ETH_TYPE_ROCE);
  79 }
  80
  81 static bool qed_dcbx_roce_v2_tlv(u32 app_info_bitmap, u16 proto_id)
  82 {
  83         return !!(qed_dcbx_app_port(app_info_bitmap) &&
  84                   proto_id == QED_UDP_PORT_TYPE_ROCE_V2);
  85 }
  86
  87 static void
  88 qed_dcbx_dp_protocol(struct qed_hwfn *p_hwfn, struct qed_dcbx_results *p_data)
  89 {
  90         enum dcbx_protocol_type id;
  91         int i;
  92
  93         DP_VERBOSE(p_hwfn, QED_MSG_DCB, "DCBX negotiated: %d\n",
  94                    p_data->dcbx_enabled);
  95
  96         for (i = 0; i < ARRAY_SIZE(qed_dcbx_app_update); i++) {
  97                 id = qed_dcbx_app_update[i].id;
  98
  99                 DP_VERBOSE(p_hwfn, QED_MSG_DCB,
 100                            "%s info: update %d, enable %d, prio %d, tc %d, num_tc %d\n",
 101                            qed_dcbx_app_update[i].name, p_data->arr[id].update,
 102                            p_data->arr[id].enable, p_data->arr[id].priority,
 103                            p_data->arr[id].tc, p_hwfn->hw_info.num_tc);
 104         }
 105 }
 106
 107 static void
 108 qed_dcbx_set_params(struct qed_dcbx_results *p_data,
 109                     struct qed_hw_info *p_info,
 110                     bool enable,
 111                     bool update,
 112                     u8 prio,
 113                     u8 tc,
 114                     enum dcbx_protocol_type type,
 115                     enum qed_pci_personality personality)
 116 {
 117         /* PF update ramrod data */
 118         p_data->arr[type].update = update;
 119         p_data->arr[type].enable = enable;
 120         p_data->arr[type].priority = prio;
 121         p_data->arr[type].tc = tc;
 122
 123         /* QM reconf data */
 124         if (p_info->personality == personality) {
 125                 if (personality == QED_PCI_ETH)
 126                         p_info->non_offload_tc = tc;
 127                 else
 128                         p_info->offload_tc = tc;
 129         }
 130 }
 131
 132 /* Update app protocol data and hw_info fields with the TLV info */
 133 static void
 134 qed_dcbx_update_app_info(struct qed_dcbx_results *p_data,
 135                          struct qed_hwfn *p_hwfn,
 136                          bool enable,
 137                          bool update,
 138                          u8 prio, u8 tc, enum dcbx_protocol_type type)
 139 {
 140         struct qed_hw_info *p_info = &p_hwfn->hw_info;
 141         enum qed_pci_personality personality;
 142         enum dcbx_protocol_type id;
 143         char *name;
 144         int i;
 145
 146         for (i = 0; i < ARRAY_SIZE(qed_dcbx_app_update); i++) {
 147                 id = qed_dcbx_app_update[i].id;
 148
 149                 if (type != id)
 150                         continue;
 151
 152                 personality = qed_dcbx_app_update[i].personality;
 153                 name = qed_dcbx_app_update[i].name;
 154
 155                 qed_dcbx_set_params(p_data, p_info, enable, update,
 156                                     prio, tc, type, personality);
 157         }
 158 }
 159
 160 static bool
 161 qed_dcbx_get_app_protocol_type(struct qed_hwfn *p_hwfn,
 162                                u32 app_prio_bitmap,
 163                                u16 id, enum dcbx_protocol_type *type)
 164 {
 165         if (qed_dcbx_fcoe_tlv(app_prio_bitmap, id)) {
 166                 *type = DCBX_PROTOCOL_FCOE;
 167         } else if (qed_dcbx_roce_tlv(app_prio_bitmap, id)) {
 168                 *type = DCBX_PROTOCOL_ROCE;
 169         } else if (qed_dcbx_iscsi_tlv(app_prio_bitmap, id)) {
 170                 *type = DCBX_PROTOCOL_ISCSI;
 171         } else if (qed_dcbx_default_tlv(app_prio_bitmap, id)) {
 172                 *type = DCBX_PROTOCOL_ETH;
 173         } else if (qed_dcbx_roce_v2_tlv(app_prio_bitmap, id)) {
 174                 *type = DCBX_PROTOCOL_ROCE_V2;
 175         } else {
 176                 *type = DCBX_MAX_PROTOCOL_TYPE;
 177                 DP_ERR(p_hwfn,
 178                        "No action required, App TLV id = 0x%x app_prio_bitmap = 0x%x\n",
 179                        id, app_prio_bitmap);
 180                 return false;
 181         }
 182
 183         return true;
 184 }
 185
 186 /* Parse app TLV's to update TC information in hw_info structure for
 187  * reconfiguring QM. Get protocol specific data for PF update ramrod command.
 188  */
 189 static int
 190 qed_dcbx_process_tlv(struct qed_hwfn *p_hwfn,
 191                      struct qed_dcbx_results *p_data,
 192                      struct dcbx_app_priority_entry *p_tbl,
 193                      u32 pri_tc_tbl, int count, bool dcbx_enabled)
 194 {
 195         u8 tc, priority, priority_map;
 196         enum dcbx_protocol_type type;
 197         u16 protocol_id;
 198         bool enable;
 199         int i;
 200
 201         DP_VERBOSE(p_hwfn, QED_MSG_DCB, "Num APP entries = %d\n", count);
 202
 203         /* Parse APP TLV */
 204         for (i = 0; i < count; i++) {
 205                 protocol_id = QED_MFW_GET_FIELD(p_tbl[i].entry,
 206                                                 DCBX_APP_PROTOCOL_ID);
 207                 priority_map = QED_MFW_GET_FIELD(p_tbl[i].entry,
 208                                                  DCBX_APP_PRI_MAP);
 209                 priority = ffs(priority_map) - 1;
 210                 if (priority < 0) {
 211                         DP_ERR(p_hwfn, "Invalid priority\n");
 212                         return -EINVAL;
 213                 }
 214
 215                 tc = QED_DCBX_PRIO2TC(pri_tc_tbl, priority);
 216                 if (qed_dcbx_get_app_protocol_type(p_hwfn, p_tbl[i].entry,
 217                                                    protocol_id, &type)) {
 218                         /* ETH always have the enable bit reset, as it gets
 219                          * vlan information per packet. For other protocols,
 220                          * should be set according to the dcbx_enabled
 221                          * indication, but we only got here if there was an
 222                          * app tlv for the protocol, so dcbx must be enabled.
 223                          */
 224                         enable = !!(type == DCBX_PROTOCOL_ETH);
 225
 226                         qed_dcbx_update_app_info(p_data, p_hwfn, enable, true,
 227                                                  priority, tc, type);
 228                 }
 229         }
 230
 231         /* If RoCE-V2 TLV is not detected, driver need to use RoCE app
 232          * data for RoCE-v2 not the default app data.
 233          */
 234         if (!p_data->arr[DCBX_PROTOCOL_ROCE_V2].update &&
 235             p_data->arr[DCBX_PROTOCOL_ROCE].update) {
 236                 tc = p_data->arr[DCBX_PROTOCOL_ROCE].tc;
 237                 priority = p_data->arr[DCBX_PROTOCOL_ROCE].priority;
 238                 qed_dcbx_update_app_info(p_data, p_hwfn, true, true,
 239                                          priority, tc, DCBX_PROTOCOL_ROCE_V2);
 240         }
 241
 242         /* Update ramrod protocol data and hw_info fields
 243          * with default info when corresponding APP TLV's are not detected.
 244          * The enabled field has a different logic for ethernet as only for
 245          * ethernet dcb should disabled by default, as the information arrives
 246          * from the OS (unless an explicit app tlv was present).
 247          */
 248         tc = p_data->arr[DCBX_PROTOCOL_ETH].tc;
 249         priority = p_data->arr[DCBX_PROTOCOL_ETH].priority;
 250         for (type = 0; type < DCBX_MAX_PROTOCOL_TYPE; type++) {
 251                 if (p_data->arr[type].update)
 252                         continue;
 253
 254                 enable = (type == DCBX_PROTOCOL_ETH) ? false : dcbx_enabled;
 255                 qed_dcbx_update_app_info(p_data, p_hwfn, enable, true,
 256                                          priority, tc, type);
 257         }
 258
 259         return 0;
 260 }
 261
 262 /* Parse app TLV's to update TC information in hw_info structure for
 263  * reconfiguring QM. Get protocol specific data for PF update ramrod command.
 264  */
 265 static int qed_dcbx_process_mib_info(struct qed_hwfn *p_hwfn)
 266 {
 267         struct dcbx_app_priority_feature *p_app;
 268         struct dcbx_app_priority_entry *p_tbl;
 269         struct qed_dcbx_results data = { 0 };
 270         struct dcbx_ets_feature *p_ets;
 271         struct qed_hw_info *p_info;
 272         u32 pri_tc_tbl, flags;
 273         bool dcbx_enabled;
 274         int num_entries;
 275         int rc = 0;
 276
 277         /* If DCBx version is non zero, then negotiation was
 278          * successfuly performed
 279          */
 280         flags = p_hwfn->p_dcbx_info->operational.flags;
 281         dcbx_enabled = !!QED_MFW_GET_FIELD(flags, DCBX_CONFIG_VERSION);
 282
 283         p_app = &p_hwfn->p_dcbx_info->operational.features.app;
 284         p_tbl = p_app->app_pri_tbl;
 285
 286         p_ets = &p_hwfn->p_dcbx_info->operational.features.ets;
 287         pri_tc_tbl = p_ets->pri_tc_tbl[0];
 288
 289         p_info = &p_hwfn->hw_info;
 290         num_entries = QED_MFW_GET_FIELD(p_app->flags, DCBX_APP_NUM_ENTRIES);
 291
 292         rc = qed_dcbx_process_tlv(p_hwfn, &data, p_tbl, pri_tc_tbl,
 293                                   num_entries, dcbx_enabled);
 294         if (rc)
 295                 return rc;
 296
 297         p_info->num_tc = QED_MFW_GET_FIELD(p_ets->flags, DCBX_ETS_MAX_TCS);
 298         data.pf_id = p_hwfn->rel_pf_id;
 299         data.dcbx_enabled = dcbx_enabled;
 300
 301         qed_dcbx_dp_protocol(p_hwfn, &data);
 302
 303         memcpy(&p_hwfn->p_dcbx_info->results, &data,
 304                sizeof(struct qed_dcbx_results));
 305
 306         return 0;
 307 }
 308
 309 static int
 310 qed_dcbx_copy_mib(struct qed_hwfn *p_hwfn,
 311                   struct qed_ptt *p_ptt,
 312                   struct qed_dcbx_mib_meta_data *p_data,
 313                   enum qed_mib_read_type type)
 314 {
 315         u32 prefix_seq_num, suffix_seq_num;
 316         int read_count = 0;
 317         int rc = 0;
 318
 319         /* The data is considered to be valid only if both sequence numbers are
 320          * the same.
 321          */
 322         do {
 323                 if (type == QED_DCBX_REMOTE_LLDP_MIB) {
 324                         qed_memcpy_from(p_hwfn, p_ptt, p_data->lldp_remote,
 325                                         p_data->addr, p_data->size);
 326                         prefix_seq_num = p_data->lldp_remote->prefix_seq_num;
 327                         suffix_seq_num = p_data->lldp_remote->suffix_seq_num;
 328                 } else {
 329                         qed_memcpy_from(p_hwfn, p_ptt, p_data->mib,
 330                                         p_data->addr, p_data->size);
 331                         prefix_seq_num = p_data->mib->prefix_seq_num;
 332                         suffix_seq_num = p_data->mib->suffix_seq_num;
 333                 }
 334                 read_count++;
 335
 336                 DP_VERBOSE(p_hwfn,
 337                            QED_MSG_DCB,
 338                            "mib type = %d, try count = %d prefix seq num  = %d suffix seq num = %d\n",
 339                            type, read_count, prefix_seq_num, suffix_seq_num);
 340         } while ((prefix_seq_num != suffix_seq_num) &&
 341                  (read_count < QED_DCBX_MAX_MIB_READ_TRY));
 342
 343         if (read_count >= QED_DCBX_MAX_MIB_READ_TRY) {
 344                 DP_ERR(p_hwfn,
 345                        "MIB read err, mib type = %d, try count = %d prefix seq num = %d suffix seq num = %d\n",
 346                        type, read_count, prefix_seq_num, suffix_seq_num);
 347                 rc = -EIO;
 348         }
 349
 350         return rc;
 351 }
 352
 353 static int
 354 qed_dcbx_read_local_lldp_mib(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 355 {
 356         struct qed_dcbx_mib_meta_data data;
 357         int rc = 0;
 358
 359         memset(&data, 0, sizeof(data));
 360         data.addr = p_hwfn->mcp_info->port_addr + offsetof(struct public_port,
 361                                                            lldp_config_params);
 362         data.lldp_local = p_hwfn->p_dcbx_info->lldp_local;
 363         data.size = sizeof(struct lldp_config_params_s);
 364         qed_memcpy_from(p_hwfn, p_ptt, data.lldp_local, data.addr, data.size);
 365
 366         return rc;
 367 }
 368
 369 static int
 370 qed_dcbx_read_remote_lldp_mib(struct qed_hwfn *p_hwfn,
 371                               struct qed_ptt *p_ptt,
 372                               enum qed_mib_read_type type)
 373 {
 374         struct qed_dcbx_mib_meta_data data;
 375         int rc = 0;
 376
 377         memset(&data, 0, sizeof(data));
 378         data.addr = p_hwfn->mcp_info->port_addr + offsetof(struct public_port,
 379                                                            lldp_status_params);
 380         data.lldp_remote = p_hwfn->p_dcbx_info->lldp_remote;
 381         data.size = sizeof(struct lldp_status_params_s);
 382         rc = qed_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);
 383
 384         return rc;
 385 }
 386
 387 static int
 388 qed_dcbx_read_operational_mib(struct qed_hwfn *p_hwfn,
 389                               struct qed_ptt *p_ptt,
 390                               enum qed_mib_read_type type)
 391 {
 392         struct qed_dcbx_mib_meta_data data;
 393         int rc = 0;
 394
 395         memset(&data, 0, sizeof(data));
 396         data.addr = p_hwfn->mcp_info->port_addr +
 397                     offsetof(struct public_port, operational_dcbx_mib);
 398         data.mib = &p_hwfn->p_dcbx_info->operational;
 399         data.size = sizeof(struct dcbx_mib);
 400         rc = qed_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);
 401
 402         return rc;
 403 }
 404
 405 static int
 406 qed_dcbx_read_remote_mib(struct qed_hwfn *p_hwfn,
 407                          struct qed_ptt *p_ptt, enum qed_mib_read_type type)
 408 {
 409         struct qed_dcbx_mib_meta_data data;
 410         int rc = 0;
 411
 412         memset(&data, 0, sizeof(data));
 413         data.addr = p_hwfn->mcp_info->port_addr +
 414                     offsetof(struct public_port, remote_dcbx_mib);
 415         data.mib = &p_hwfn->p_dcbx_info->remote;
 416         data.size = sizeof(struct dcbx_mib);
 417         rc = qed_dcbx_copy_mib(p_hwfn, p_ptt, &data, type);
 418
 419         return rc;
 420 }
 421
 422 static int
 423 qed_dcbx_read_local_mib(struct qed_hwfn *p_hwfn, struct qed_ptt *p_ptt)
 424 {
 425         struct qed_dcbx_mib_meta_data data;
 426         int rc = 0;
 427
 428         memset(&data, 0, sizeof(data));
 429         data.addr = p_hwfn->mcp_info->port_addr +
 430                     offsetof(struct public_port, local_admin_dcbx_mib);
 431         data.local_admin = &p_hwfn->p_dcbx_info->local_admin;
 432         data.size = sizeof(struct dcbx_local_params);
 433         qed_memcpy_from(p_hwfn, p_ptt, data.local_admin, data.addr, data.size);
 434
 435         return rc;
 436 }
 437
 438 static int qed_dcbx_read_mib(struct qed_hwfn *p_hwfn,
 439                              struct qed_ptt *p_ptt, enum qed_mib_read_type type)
 440 {
 441         int rc = -EINVAL;
 442
 443         switch (type) {
 444         case QED_DCBX_OPERATIONAL_MIB:
 445                 rc = qed_dcbx_read_operational_mib(p_hwfn, p_ptt, type);
 446                 break;
 447         case QED_DCBX_REMOTE_MIB:
 448                 rc = qed_dcbx_read_remote_mib(p_hwfn, p_ptt, type);
 449                 break;
 450         case QED_DCBX_LOCAL_MIB:
 451                 rc = qed_dcbx_read_local_mib(p_hwfn, p_ptt);
 452                 break;
 453         case QED_DCBX_REMOTE_LLDP_MIB:
 454                 rc = qed_dcbx_read_remote_lldp_mib(p_hwfn, p_ptt, type);
 455                 break;
 456         case QED_DCBX_LOCAL_LLDP_MIB:
 457                 rc = qed_dcbx_read_local_lldp_mib(p_hwfn, p_ptt);
 458                 break;
 459         default:
 460                 DP_ERR(p_hwfn, "MIB read err, unknown mib type %d\n", type);
 461         }
 462
 463         return rc;
 464 }
 465
 466 /* Read updated MIB.
 467  * Reconfigure QM and invoke PF update ramrod command if operational MIB
 468  * change is detected.
 469  */
 470 int
 471 qed_dcbx_mib_update_event(struct qed_hwfn *p_hwfn,
 472                           struct qed_ptt *p_ptt, enum qed_mib_read_type type)
 473 {
 474         int rc = 0;
 475
 476         rc = qed_dcbx_read_mib(p_hwfn, p_ptt, type);
 477         if (rc)
 478                 return rc;
 479
 480         if (type == QED_DCBX_OPERATIONAL_MIB) {
 481                 rc = qed_dcbx_process_mib_info(p_hwfn);
 482                 if (!rc) {
 483                         /* reconfigure tcs of QM queues according
 484                          * to negotiation results
 485                          */
 486                         qed_qm_reconf(p_hwfn, p_ptt);
 487
 488                         /* update storm FW with negotiation results */
 489                         qed_sp_pf_update(p_hwfn);
 490                 }
 491         }
 492
 493         return rc;
 494 }
 495
 496 int qed_dcbx_info_alloc(struct qed_hwfn *p_hwfn)
 497 {
 498         int rc = 0;
 499
 500         p_hwfn->p_dcbx_info = kzalloc(sizeof(*p_hwfn->p_dcbx_info), GFP_KERNEL);
 501         if (!p_hwfn->p_dcbx_info) {
 502                 DP_NOTICE(p_hwfn,
 503                           "Failed to allocate 'struct qed_dcbx_info'\n");
 504                 rc = -ENOMEM;
 505         }
 506
 507         return rc;
 508 }
 509
 510 void qed_dcbx_info_free(struct qed_hwfn *p_hwfn,
 511                         struct qed_dcbx_info *p_dcbx_info)
 512 {
 513         kfree(p_hwfn->p_dcbx_info);
 514 }
 515
 516 static void qed_dcbx_update_protocol_data(struct protocol_dcb_data *p_data,
 517                                           struct qed_dcbx_results *p_src,
 518                                           enum dcbx_protocol_type type)
 519 {
 520         p_data->dcb_enable_flag = p_src->arr[type].enable;
 521         p_data->dcb_priority = p_src->arr[type].priority;
 522         p_data->dcb_tc = p_src->arr[type].tc;
 523 }
 524
 525 /* Set pf update ramrod command params */
 526 void qed_dcbx_set_pf_update_params(struct qed_dcbx_results *p_src,
 527                                    struct pf_update_ramrod_data *p_dest)
 528 {
 529         struct protocol_dcb_data *p_dcb_data;
 530         bool update_flag = false;
 531
 532         p_dest->pf_id = p_src->pf_id;
 533
 534         update_flag = p_src->arr[DCBX_PROTOCOL_FCOE].update;
 535         p_dest->update_fcoe_dcb_data_flag = update_flag;
 536
 537         update_flag = p_src->arr[DCBX_PROTOCOL_ROCE].update;
 538         p_dest->update_roce_dcb_data_flag = update_flag;
 539         update_flag = p_src->arr[DCBX_PROTOCOL_ROCE_V2].update;
 540         p_dest->update_roce_dcb_data_flag = update_flag;
 541
 542         update_flag = p_src->arr[DCBX_PROTOCOL_ISCSI].update;
 543         p_dest->update_iscsi_dcb_data_flag = update_flag;
 544         update_flag = p_src->arr[DCBX_PROTOCOL_ETH].update;
 545         p_dest->update_eth_dcb_data_flag = update_flag;
 546
 547         p_dcb_data = &p_dest->fcoe_dcb_data;
 548         qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_FCOE);
 549         p_dcb_data = &p_dest->roce_dcb_data;
 550
 551         if (p_src->arr[DCBX_PROTOCOL_ROCE].update)
 552                 qed_dcbx_update_protocol_data(p_dcb_data, p_src,
 553                                               DCBX_PROTOCOL_ROCE);
 554         if (p_src->arr[DCBX_PROTOCOL_ROCE_V2].update)
 555                 qed_dcbx_update_protocol_data(p_dcb_data, p_src,
 556                                               DCBX_PROTOCOL_ROCE_V2);
 557
 558         p_dcb_data = &p_dest->iscsi_dcb_data;
 559         qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ISCSI);
 560         p_dcb_data = &p_dest->eth_dcb_data;
 561         qed_dcbx_update_protocol_data(p_dcb_data, p_src, DCBX_PROTOCOL_ETH);
 562 }