drivers/scsi/bfa/bfa_fcs.c

   1 // SPDX-License-Identifier: GPL-2.0-only
   2 /*
   3  * Copyright (c) 2005-2014 Brocade Communications Systems, Inc.
   4  * Copyright (c) 2014- QLogic Corporation.
   5  * All rights reserved
   6  * www.qlogic.com
   7  *
   8  * Linux driver for QLogic BR-series Fibre Channel Host Bus Adapter.
   9  */
  10
  11 /*
  12  *  bfa_fcs.c BFA FCS main
  13  */
  14
  15 #include "bfad_drv.h"
  16 #include "bfad_im.h"
  17 #include "bfa_fcs.h"
  18 #include "bfa_fcbuild.h"
  19
  20 BFA_TRC_FILE(FCS, FCS);
  21
  22 /*
  23  *  fcs_api BFA FCS API
  24  */
  25
  26 static void
  27 bfa_fcs_exit_comp(void *fcs_cbarg)
  28 {
  29         struct bfa_fcs_s      *fcs = fcs_cbarg;
  30         struct bfad_s         *bfad = fcs->bfad;
  31
  32         complete(&bfad->comp);
  33 }
  34
  35 /*
  36  * fcs initialization, called once after bfa initialization is complete
  37  */
  38 void
  39 bfa_fcs_init(struct bfa_fcs_s *fcs)
  40 {
  41         bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
  42         bfa_trc(fcs, 0);
  43 }
  44
  45 /*
  46  *  fcs_api BFA FCS API
  47  */
  48
  49 /*
  50  * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
  51  * with values learned during bfa_init firmware GETATTR REQ.
  52  */
  53 void
  54 bfa_fcs_update_cfg(struct bfa_fcs_s *fcs)
  55 {
  56         struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
  57         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
  58         struct bfa_ioc_s *ioc = &fabric->fcs->bfa->ioc;
  59
  60         port_cfg->nwwn = ioc->attr->nwwn;
  61         port_cfg->pwwn = ioc->attr->pwwn;
  62 }
  63
  64 /*
  65  * Stop FCS operations.
  66  */
  67 void
  68 bfa_fcs_stop(struct bfa_fcs_s *fcs)
  69 {
  70         bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
  71         bfa_wc_up(&fcs->wc);
  72         bfa_fcs_fabric_modstop(fcs);
  73         bfa_wc_wait(&fcs->wc);
  74 }
  75
  76 /*
  77  * fcs pbc vport initialization
  78  */
  79 void
  80 bfa_fcs_pbc_vport_init(struct bfa_fcs_s *fcs)
  81 {
  82         int i, npbc_vports;
  83         struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
  84
  85         /* Initialize pbc vports */
  86         if (!fcs->min_cfg) {
  87                 npbc_vports =
  88                         bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
  89                 for (i = 0; i < npbc_vports; i++)
  90                         bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
  91         }
  92 }
  93
  94 /*
  95  *      brief
  96  *              FCS driver details initialization.
  97  *
  98  *      param[in]               fcs             FCS instance
  99  *      param[in]               driver_info     Driver Details
 100  *
 101  *      return None
 102  */
 103 void
 104 bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
 105                         struct bfa_fcs_driver_info_s *driver_info)
 106 {
 107
 108         fcs->driver_info = *driver_info;
 109
 110         bfa_fcs_fabric_psymb_init(&fcs->fabric);
 111         bfa_fcs_fabric_nsymb_init(&fcs->fabric);
 112 }
 113
 114 /*
 115  *      brief
 116  *              FCS instance cleanup and exit.
 117  *
 118  *      param[in]               fcs                     FCS instance
 119  *      return None
 120  */
 121 void
 122 bfa_fcs_exit(struct bfa_fcs_s *fcs)
 123 {
 124         bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
 125         bfa_wc_up(&fcs->wc);
 126         bfa_trc(fcs, 0);
 127         bfa_lps_delete(fcs->fabric.lps);
 128         bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_DELETE);
 129         bfa_wc_wait(&fcs->wc);
 130 }
 131
 132 /*
 133  * Fabric module implementation.
 134  */
 135
 136 #define BFA_FCS_FABRIC_RETRY_DELAY      (2000)  /* Milliseconds */
 137 #define BFA_FCS_FABRIC_CLEANUP_DELAY    (10000) /* Milliseconds */
 138
 139 #define bfa_fcs_fabric_set_opertype(__fabric) do {                      \
 140         if (bfa_fcport_get_topology((__fabric)->fcs->bfa)               \
 141                                 == BFA_PORT_TOPOLOGY_P2P) {             \
 142                 if (fabric->fab_type == BFA_FCS_FABRIC_SWITCHED)        \
 143                         (__fabric)->oper_type = BFA_PORT_TYPE_NPORT;    \
 144                 else                                                    \
 145                         (__fabric)->oper_type = BFA_PORT_TYPE_P2P;      \
 146         } else                                                          \
 147                 (__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;           \
 148 } while (0)
 149
 150 /*
 151  * forward declarations
 152  */
 153 static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
 154 static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
 155 static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
 156 static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
 157 static void bfa_fcs_fabric_delay(void *cbarg);
 158 static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
 159 static void bfa_fcs_fabric_delete_comp(void *cbarg);
 160 static void bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric);
 161 static void bfa_fcs_fabric_stop_comp(void *cbarg);
 162 static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
 163                                       struct fchs_s *fchs, u16 len);
 164 static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
 165                                          struct fchs_s *fchs, u16 len);
 166 static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
 167 static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
 168                                          struct bfa_fcxp_s *fcxp, void *cbarg,
 169                                          bfa_status_t status,
 170                                          u32 rsp_len,
 171                                          u32 resid_len,
 172                                          struct fchs_s *rspfchs);
 173
 174 static void     bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
 175                                          enum bfa_fcs_fabric_event event);
 176 static void     bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 177                                           enum bfa_fcs_fabric_event event);
 178 static void     bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
 179                                            enum bfa_fcs_fabric_event event);
 180 static void     bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
 181                                         enum bfa_fcs_fabric_event event);
 182 static void     bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
 183                                               enum bfa_fcs_fabric_event event);
 184 static void     bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
 185                                        enum bfa_fcs_fabric_event event);
 186 static void     bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
 187                                            enum bfa_fcs_fabric_event event);
 188 static void     bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
 189                                        enum bfa_fcs_fabric_event event);
 190 static void     bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
 191                                             enum bfa_fcs_fabric_event event);
 192 static void     bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
 193                                            enum bfa_fcs_fabric_event event);
 194 static void     bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
 195                                            enum bfa_fcs_fabric_event event);
 196 static void     bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
 197                                            enum bfa_fcs_fabric_event event);
 198 static void     bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
 199                                           enum bfa_fcs_fabric_event event);
 200 /*
 201  *   Beginning state before fabric creation.
 202  */
 203 static void
 204 bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
 205                          enum bfa_fcs_fabric_event event)
 206 {
 207         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 208         bfa_trc(fabric->fcs, event);
 209
 210         switch (event) {
 211         case BFA_FCS_FABRIC_SM_CREATE:
 212                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
 213                 bfa_fcs_fabric_init(fabric);
 214                 bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
 215                 break;
 216
 217         case BFA_FCS_FABRIC_SM_LINK_UP:
 218         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 219                 break;
 220
 221         default:
 222                 bfa_sm_fault(fabric->fcs, event);
 223         }
 224 }
 225
 226 /*
 227  *   Beginning state before fabric creation.
 228  */
 229 static void
 230 bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 231                           enum bfa_fcs_fabric_event event)
 232 {
 233         struct bfa_s    *bfa = fabric->fcs->bfa;
 234
 235         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 236         bfa_trc(fabric->fcs, event);
 237
 238         switch (event) {
 239         case BFA_FCS_FABRIC_SM_START:
 240                 if (!bfa_fcport_is_linkup(fabric->fcs->bfa)) {
 241                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 242                         break;
 243                 }
 244                 if (bfa_fcport_get_topology(bfa) ==
 245                                 BFA_PORT_TOPOLOGY_LOOP) {
 246                         fabric->fab_type = BFA_FCS_FABRIC_LOOP;
 247                         fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
 248                         fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
 249                         bfa_sm_set_state(fabric,
 250                                         bfa_fcs_fabric_sm_online);
 251                         bfa_fcs_fabric_set_opertype(fabric);
 252                         bfa_fcs_lport_online(&fabric->bport);
 253                 } else {
 254                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 255                         bfa_fcs_fabric_login(fabric);
 256                 }
 257                 break;
 258
 259         case BFA_FCS_FABRIC_SM_LINK_UP:
 260         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 261                 break;
 262
 263         case BFA_FCS_FABRIC_SM_DELETE:
 264                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 265                 bfa_fcs_fabric_delete(fabric);
 266                 break;
 267
 268         default:
 269                 bfa_sm_fault(fabric->fcs, event);
 270         }
 271 }
 272
 273 /*
 274  *   Link is down, awaiting LINK UP event from port. This is also the
 275  *   first state at fabric creation.
 276  */
 277 static void
 278 bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
 279                            enum bfa_fcs_fabric_event event)
 280 {
 281         struct bfa_s    *bfa = fabric->fcs->bfa;
 282
 283         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 284         bfa_trc(fabric->fcs, event);
 285
 286         switch (event) {
 287         case BFA_FCS_FABRIC_SM_LINK_UP:
 288                 if (bfa_fcport_get_topology(bfa) != BFA_PORT_TOPOLOGY_LOOP) {
 289                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 290                         bfa_fcs_fabric_login(fabric);
 291                         break;
 292                 }
 293                 fabric->fab_type = BFA_FCS_FABRIC_LOOP;
 294                 fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
 295                 fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
 296                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 297                 bfa_fcs_fabric_set_opertype(fabric);
 298                 bfa_fcs_lport_online(&fabric->bport);
 299                 break;
 300
 301         case BFA_FCS_FABRIC_SM_RETRY_OP:
 302         case BFA_FCS_FABRIC_SM_LOOPBACK:
 303                 break;
 304
 305         case BFA_FCS_FABRIC_SM_DELETE:
 306                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 307                 bfa_fcs_fabric_delete(fabric);
 308                 break;
 309
 310         case BFA_FCS_FABRIC_SM_STOP:
 311                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
 312                 bfa_fcs_fabric_stop(fabric);
 313                 break;
 314
 315         default:
 316                 bfa_sm_fault(fabric->fcs, event);
 317         }
 318 }
 319
 320 /*
 321  *   FLOGI is in progress, awaiting FLOGI reply.
 322  */
 323 static void
 324 bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
 325                         enum bfa_fcs_fabric_event event)
 326 {
 327         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 328         bfa_trc(fabric->fcs, event);
 329
 330         switch (event) {
 331         case BFA_FCS_FABRIC_SM_CONT_OP:
 332
 333                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 334                                            fabric->bb_credit);
 335                 fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
 336
 337                 if (fabric->auth_reqd && fabric->is_auth) {
 338                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
 339                         bfa_trc(fabric->fcs, event);
 340                 } else {
 341                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 342                         bfa_fcs_fabric_notify_online(fabric);
 343                 }
 344                 break;
 345
 346         case BFA_FCS_FABRIC_SM_RETRY_OP:
 347                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
 348                 bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
 349                                 bfa_fcs_fabric_delay, fabric,
 350                                 BFA_FCS_FABRIC_RETRY_DELAY);
 351                 break;
 352
 353         case BFA_FCS_FABRIC_SM_LOOPBACK:
 354                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
 355                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 356                 bfa_fcs_fabric_set_opertype(fabric);
 357                 break;
 358
 359         case BFA_FCS_FABRIC_SM_NO_FABRIC:
 360                 fabric->fab_type = BFA_FCS_FABRIC_N2N;
 361                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 362                                            fabric->bb_credit);
 363                 bfa_fcs_fabric_notify_online(fabric);
 364                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
 365                 break;
 366
 367         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 368                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 369                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 370                 break;
 371
 372         case BFA_FCS_FABRIC_SM_DELETE:
 373                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 374                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 375                 bfa_fcs_fabric_delete(fabric);
 376                 break;
 377
 378         default:
 379                 bfa_sm_fault(fabric->fcs, event);
 380         }
 381 }
 382
 383
 384 static void
 385 bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
 386                               enum bfa_fcs_fabric_event event)
 387 {
 388         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 389         bfa_trc(fabric->fcs, event);
 390
 391         switch (event) {
 392         case BFA_FCS_FABRIC_SM_DELAYED:
 393                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 394                 bfa_fcs_fabric_login(fabric);
 395                 break;
 396
 397         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 398                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 399                 bfa_timer_stop(&fabric->delay_timer);
 400                 break;
 401
 402         case BFA_FCS_FABRIC_SM_DELETE:
 403                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 404                 bfa_timer_stop(&fabric->delay_timer);
 405                 bfa_fcs_fabric_delete(fabric);
 406                 break;
 407
 408         default:
 409                 bfa_sm_fault(fabric->fcs, event);
 410         }
 411 }
 412
 413 /*
 414  *   Authentication is in progress, awaiting authentication results.
 415  */
 416 static void
 417 bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
 418                        enum bfa_fcs_fabric_event event)
 419 {
 420         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 421         bfa_trc(fabric->fcs, event);
 422
 423         switch (event) {
 424         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
 425                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
 426                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 427                 break;
 428
 429         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
 430                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 431                 bfa_fcs_fabric_notify_online(fabric);
 432                 break;
 433
 434         case BFA_FCS_FABRIC_SM_PERF_EVFP:
 435                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
 436                 break;
 437
 438         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 439                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 440                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 441                 break;
 442
 443         case BFA_FCS_FABRIC_SM_DELETE:
 444                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 445                 bfa_fcs_fabric_delete(fabric);
 446                 break;
 447
 448         default:
 449                 bfa_sm_fault(fabric->fcs, event);
 450         }
 451 }
 452
 453 /*
 454  *   Authentication failed
 455  */
 456 void
 457 bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
 458                               enum bfa_fcs_fabric_event event)
 459 {
 460         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 461         bfa_trc(fabric->fcs, event);
 462
 463         switch (event) {
 464         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 465                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 466                 bfa_fcs_fabric_notify_offline(fabric);
 467                 break;
 468
 469         case BFA_FCS_FABRIC_SM_DELETE:
 470                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 471                 bfa_fcs_fabric_delete(fabric);
 472                 break;
 473
 474         default:
 475                 bfa_sm_fault(fabric->fcs, event);
 476         }
 477 }
 478
 479 /*
 480  *   Port is in loopback mode.
 481  */
 482 void
 483 bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
 484                            enum bfa_fcs_fabric_event event)
 485 {
 486         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 487         bfa_trc(fabric->fcs, event);
 488
 489         switch (event) {
 490         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 491                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 492                 bfa_fcs_fabric_notify_offline(fabric);
 493                 break;
 494
 495         case BFA_FCS_FABRIC_SM_DELETE:
 496                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 497                 bfa_fcs_fabric_delete(fabric);
 498                 break;
 499
 500         default:
 501                 bfa_sm_fault(fabric->fcs, event);
 502         }
 503 }
 504
 505 /*
 506  *   There is no attached fabric - private loop or NPort-to-NPort topology.
 507  */
 508 static void
 509 bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
 510                            enum bfa_fcs_fabric_event event)
 511 {
 512         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 513         bfa_trc(fabric->fcs, event);
 514
 515         switch (event) {
 516         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 517                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 518                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 519                 bfa_fcs_fabric_notify_offline(fabric);
 520                 break;
 521
 522         case BFA_FCS_FABRIC_SM_DELETE:
 523                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 524                 bfa_fcs_fabric_delete(fabric);
 525                 break;
 526
 527         case BFA_FCS_FABRIC_SM_NO_FABRIC:
 528                 bfa_trc(fabric->fcs, fabric->bb_credit);
 529                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 530                                            fabric->bb_credit);
 531                 break;
 532
 533         case BFA_FCS_FABRIC_SM_RETRY_OP:
 534                 break;
 535
 536         default:
 537                 bfa_sm_fault(fabric->fcs, event);
 538         }
 539 }
 540
 541 /*
 542  *   Fabric is online - normal operating state.
 543  */
 544 void
 545 bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
 546                          enum bfa_fcs_fabric_event event)
 547 {
 548         struct bfa_s    *bfa = fabric->fcs->bfa;
 549
 550         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 551         bfa_trc(fabric->fcs, event);
 552
 553         switch (event) {
 554         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 555                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 556                 if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
 557                         bfa_fcs_lport_offline(&fabric->bport);
 558                 } else {
 559                         bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 560                         bfa_fcs_fabric_notify_offline(fabric);
 561                 }
 562                 break;
 563
 564         case BFA_FCS_FABRIC_SM_DELETE:
 565                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 566                 bfa_fcs_fabric_delete(fabric);
 567                 break;
 568
 569         case BFA_FCS_FABRIC_SM_STOP:
 570                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_stopping);
 571                 bfa_fcs_fabric_stop(fabric);
 572                 break;
 573
 574         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
 575                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
 576                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 577                 break;
 578
 579         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
 580                 break;
 581
 582         default:
 583                 bfa_sm_fault(fabric->fcs, event);
 584         }
 585 }
 586
 587 /*
 588  *   Exchanging virtual fabric parameters.
 589  */
 590 static void
 591 bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
 592                        enum bfa_fcs_fabric_event event)
 593 {
 594         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 595         bfa_trc(fabric->fcs, event);
 596
 597         switch (event) {
 598         case BFA_FCS_FABRIC_SM_CONT_OP:
 599                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
 600                 break;
 601
 602         case BFA_FCS_FABRIC_SM_ISOLATE:
 603                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
 604                 break;
 605
 606         default:
 607                 bfa_sm_fault(fabric->fcs, event);
 608         }
 609 }
 610
 611 /*
 612  *   EVFP exchange complete and VFT tagging is enabled.
 613  */
 614 static void
 615 bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
 616                             enum bfa_fcs_fabric_event event)
 617 {
 618         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 619         bfa_trc(fabric->fcs, event);
 620 }
 621
 622 /*
 623  *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
 624  */
 625 static void
 626 bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
 627                            enum bfa_fcs_fabric_event event)
 628 {
 629         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
 630         char    pwwn_ptr[BFA_STRING_32];
 631
 632         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 633         bfa_trc(fabric->fcs, event);
 634         wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
 635
 636         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 637                 "Port is isolated due to VF_ID mismatch. "
 638                 "PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
 639                 pwwn_ptr, fabric->fcs->port_vfid,
 640                 fabric->event_arg.swp_vfid);
 641 }
 642
 643 /*
 644  *   Fabric is being deleted, awaiting vport delete completions.
 645  */
 646 static void
 647 bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
 648                            enum bfa_fcs_fabric_event event)
 649 {
 650         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 651         bfa_trc(fabric->fcs, event);
 652
 653         switch (event) {
 654         case BFA_FCS_FABRIC_SM_DELCOMP:
 655                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
 656                 bfa_wc_down(&fabric->fcs->wc);
 657                 break;
 658
 659         case BFA_FCS_FABRIC_SM_LINK_UP:
 660                 break;
 661
 662         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 663                 bfa_fcs_fabric_notify_offline(fabric);
 664                 break;
 665
 666         default:
 667                 bfa_sm_fault(fabric->fcs, event);
 668         }
 669 }
 670
 671 /*
 672  * Fabric is being stopped, awaiting vport stop completions.
 673  */
 674 static void
 675 bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
 676                            enum bfa_fcs_fabric_event event)
 677 {
 678         struct bfa_s    *bfa = fabric->fcs->bfa;
 679
 680         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 681         bfa_trc(fabric->fcs, event);
 682
 683         switch (event) {
 684         case BFA_FCS_FABRIC_SM_STOPCOMP:
 685                 if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
 686                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
 687                 } else {
 688                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
 689                         bfa_sm_send_event(fabric->lps, BFA_LPS_SM_LOGOUT);
 690                 }
 691                 break;
 692
 693         case BFA_FCS_FABRIC_SM_LINK_UP:
 694                 break;
 695
 696         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 697                 if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
 698                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
 699                 else
 700                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
 701                 break;
 702
 703         default:
 704                 bfa_sm_fault(fabric->fcs, event);
 705         }
 706 }
 707
 708 /*
 709  * Fabric is being stopped, cleanup without FLOGO
 710  */
 711 static void
 712 bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
 713                           enum bfa_fcs_fabric_event event)
 714 {
 715         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 716         bfa_trc(fabric->fcs, event);
 717
 718         switch (event) {
 719         case BFA_FCS_FABRIC_SM_STOPCOMP:
 720         case BFA_FCS_FABRIC_SM_LOGOCOMP:
 721                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
 722                 bfa_wc_down(&(fabric->fcs)->wc);
 723                 break;
 724
 725         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 726                 /*
 727                  * Ignore - can get this event if we get notified about IOC down
 728                  * before the fabric completion callbk is done.
 729                  */
 730                 break;
 731
 732         default:
 733                 bfa_sm_fault(fabric->fcs, event);
 734         }
 735 }
 736
 737 /*
 738  *  fcs_fabric_private fabric private functions
 739  */
 740
 741 static void
 742 bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
 743 {
 744         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 745
 746         port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
 747         port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
 748         port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
 749 }
 750
 751 /*
 752  * Port Symbolic Name Creation for base port.
 753  */
 754 void
 755 bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
 756 {
 757         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 758         char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
 759         struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
 760
 761         bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
 762
 763         /* Model name/number */
 764         strlcpy(port_cfg->sym_name.symname, model,
 765                 BFA_SYMNAME_MAXLEN);
 766         strlcat(port_cfg->sym_name.symname, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 767                 BFA_SYMNAME_MAXLEN);
 768
 769         /* Driver Version */
 770         strlcat(port_cfg->sym_name.symname, driver_info->version,
 771                 BFA_SYMNAME_MAXLEN);
 772         strlcat(port_cfg->sym_name.symname, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 773                 BFA_SYMNAME_MAXLEN);
 774
 775         /* Host machine name */
 776         strlcat(port_cfg->sym_name.symname,
 777                 driver_info->host_machine_name,
 778                 BFA_SYMNAME_MAXLEN);
 779         strlcat(port_cfg->sym_name.symname, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 780                 BFA_SYMNAME_MAXLEN);
 781
 782         /*
 783          * Host OS Info :
 784          * If OS Patch Info is not there, do not truncate any bytes from the
 785          * OS name string and instead copy the entire OS info string (64 bytes).
 786          */
 787         if (driver_info->host_os_patch[0] == '\0') {
 788                 strlcat(port_cfg->sym_name.symname,
 789                         driver_info->host_os_name,
 790                         BFA_SYMNAME_MAXLEN);
 791                 strlcat(port_cfg->sym_name.symname,
 792                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 793                         BFA_SYMNAME_MAXLEN);
 794         } else {
 795                 strlcat(port_cfg->sym_name.symname,
 796                         driver_info->host_os_name,
 797                         BFA_SYMNAME_MAXLEN);
 798                 strlcat(port_cfg->sym_name.symname,
 799                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 800                         BFA_SYMNAME_MAXLEN);
 801
 802                 /* Append host OS Patch Info */
 803                 strlcat(port_cfg->sym_name.symname,
 804                         driver_info->host_os_patch,
 805                         BFA_SYMNAME_MAXLEN);
 806         }
 807
 808         /* null terminate */
 809         port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
 810 }
 811
 812 /*
 813  * Node Symbolic Name Creation for base port and all vports
 814  */
 815 void
 816 bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s *fabric)
 817 {
 818         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 819         char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
 820         struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
 821
 822         bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
 823
 824         /* Model name/number */
 825         strlcpy(port_cfg->node_sym_name.symname, model,
 826                 BFA_SYMNAME_MAXLEN);
 827         strlcat(port_cfg->node_sym_name.symname,
 828                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 829                         BFA_SYMNAME_MAXLEN);
 830
 831         /* Driver Version */
 832         strlcat(port_cfg->node_sym_name.symname, (char *)driver_info->version,
 833                 BFA_SYMNAME_MAXLEN);
 834         strlcat(port_cfg->node_sym_name.symname,
 835                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 836                         BFA_SYMNAME_MAXLEN);
 837
 838         /* Host machine name */
 839         strlcat(port_cfg->node_sym_name.symname,
 840                 driver_info->host_machine_name,
 841                 BFA_SYMNAME_MAXLEN);
 842         strlcat(port_cfg->node_sym_name.symname,
 843                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 844                         BFA_SYMNAME_MAXLEN);
 845
 846         /* null terminate */
 847         port_cfg->node_sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
 848 }
 849
 850 /*
 851  * bfa lps login completion callback
 852  */
 853 void
 854 bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
 855 {
 856         struct bfa_fcs_fabric_s *fabric = uarg;
 857
 858         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 859         bfa_trc(fabric->fcs, status);
 860
 861         switch (status) {
 862         case BFA_STATUS_OK:
 863                 fabric->stats.flogi_accepts++;
 864                 break;
 865
 866         case BFA_STATUS_INVALID_MAC:
 867                 /* Only for CNA */
 868                 fabric->stats.flogi_acc_err++;
 869                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 870
 871                 return;
 872
 873         case BFA_STATUS_EPROTOCOL:
 874                 switch (fabric->lps->ext_status) {
 875                 case BFA_EPROTO_BAD_ACCEPT:
 876                         fabric->stats.flogi_acc_err++;
 877                         break;
 878
 879                 case BFA_EPROTO_UNKNOWN_RSP:
 880                         fabric->stats.flogi_unknown_rsp++;
 881                         break;
 882
 883                 default:
 884                         break;
 885                 }
 886                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 887
 888                 return;
 889
 890         case BFA_STATUS_FABRIC_RJT:
 891                 fabric->stats.flogi_rejects++;
 892                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 893                 return;
 894
 895         default:
 896                 fabric->stats.flogi_rsp_err++;
 897                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 898                 return;
 899         }
 900
 901         fabric->bb_credit = fabric->lps->pr_bbcred;
 902         bfa_trc(fabric->fcs, fabric->bb_credit);
 903
 904         if (!(fabric->lps->brcd_switch))
 905                 fabric->fabric_name =  fabric->lps->pr_nwwn;
 906
 907         /*
 908          * Check port type. It should be 1 = F-port.
 909          */
 910         if (fabric->lps->fport) {
 911                 fabric->bport.pid = fabric->lps->lp_pid;
 912                 fabric->is_npiv = fabric->lps->npiv_en;
 913                 fabric->is_auth = fabric->lps->auth_req;
 914                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
 915         } else {
 916                 /*
 917                  * Nport-2-Nport direct attached
 918                  */
 919                 fabric->bport.port_topo.pn2n.rem_port_wwn =
 920                         fabric->lps->pr_pwwn;
 921                 fabric->fab_type = BFA_FCS_FABRIC_N2N;
 922                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
 923         }
 924
 925         bfa_trc(fabric->fcs, fabric->bport.pid);
 926         bfa_trc(fabric->fcs, fabric->is_npiv);
 927         bfa_trc(fabric->fcs, fabric->is_auth);
 928 }
 929 /*
 930  *              Allocate and send FLOGI.
 931  */
 932 static void
 933 bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
 934 {
 935         struct bfa_s            *bfa = fabric->fcs->bfa;
 936         struct bfa_lport_cfg_s  *pcfg = &fabric->bport.port_cfg;
 937         u8                      alpa = 0;
 938
 939
 940         bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
 941                       pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
 942
 943         fabric->stats.flogi_sent++;
 944 }
 945
 946 static void
 947 bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
 948 {
 949         struct bfa_fcs_vport_s *vport;
 950         struct list_head              *qe, *qen;
 951
 952         bfa_trc(fabric->fcs, fabric->fabric_name);
 953
 954         bfa_fcs_fabric_set_opertype(fabric);
 955         fabric->stats.fabric_onlines++;
 956
 957         /*
 958          * notify online event to base and then virtual ports
 959          */
 960         bfa_fcs_lport_online(&fabric->bport);
 961
 962         list_for_each_safe(qe, qen, &fabric->vport_q) {
 963                 vport = (struct bfa_fcs_vport_s *) qe;
 964                 bfa_fcs_vport_online(vport);
 965         }
 966 }
 967
 968 static void
 969 bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
 970 {
 971         struct bfa_fcs_vport_s *vport;
 972         struct list_head              *qe, *qen;
 973
 974         bfa_trc(fabric->fcs, fabric->fabric_name);
 975         fabric->stats.fabric_offlines++;
 976
 977         /*
 978          * notify offline event first to vports and then base port.
 979          */
 980         list_for_each_safe(qe, qen, &fabric->vport_q) {
 981                 vport = (struct bfa_fcs_vport_s *) qe;
 982                 bfa_fcs_vport_offline(vport);
 983         }
 984
 985         bfa_fcs_lport_offline(&fabric->bport);
 986
 987         fabric->fabric_name = 0;
 988         fabric->fabric_ip_addr[0] = 0;
 989 }
 990
 991 static void
 992 bfa_fcs_fabric_delay(void *cbarg)
 993 {
 994         struct bfa_fcs_fabric_s *fabric = cbarg;
 995
 996         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
 997 }
 998
 999 /*
1000  * Stop all vports and wait for vport stop completions.
1001  */
1002 static void
1003 bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric)
1004 {
1005         struct bfa_fcs_vport_s *vport;
1006         struct list_head        *qe, *qen;
1007
1008         bfa_wc_init(&fabric->stop_wc, bfa_fcs_fabric_stop_comp, fabric);
1009
1010         list_for_each_safe(qe, qen, &fabric->vport_q) {
1011                 vport = (struct bfa_fcs_vport_s *) qe;
1012                 bfa_wc_up(&fabric->stop_wc);
1013                 bfa_fcs_vport_fcs_stop(vport);
1014         }
1015
1016         bfa_wc_up(&fabric->stop_wc);
1017         bfa_fcs_lport_stop(&fabric->bport);
1018         bfa_wc_wait(&fabric->stop_wc);
1019 }
1020
1021 /*
1022  * Delete all vports and wait for vport delete completions.
1023  */
1024 static void
1025 bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
1026 {
1027         struct bfa_fcs_vport_s *vport;
1028         struct list_head              *qe, *qen;
1029
1030         list_for_each_safe(qe, qen, &fabric->vport_q) {
1031                 vport = (struct bfa_fcs_vport_s *) qe;
1032                 bfa_fcs_vport_fcs_delete(vport);
1033         }
1034
1035         bfa_fcs_lport_delete(&fabric->bport);
1036         bfa_wc_wait(&fabric->wc);
1037 }
1038
1039 static void
1040 bfa_fcs_fabric_delete_comp(void *cbarg)
1041 {
1042         struct bfa_fcs_fabric_s *fabric = cbarg;
1043
1044         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
1045 }
1046
1047 static void
1048 bfa_fcs_fabric_stop_comp(void *cbarg)
1049 {
1050         struct bfa_fcs_fabric_s *fabric = cbarg;
1051
1052         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOPCOMP);
1053 }
1054
1055 /*
1056  *  fcs_fabric_public fabric public functions
1057  */
1058
1059 /*
1060  * Fabric module stop -- stop FCS actions
1061  */
1062 void
1063 bfa_fcs_fabric_modstop(struct bfa_fcs_s *fcs)
1064 {
1065         struct bfa_fcs_fabric_s *fabric;
1066
1067         bfa_trc(fcs, 0);
1068         fabric = &fcs->fabric;
1069         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOP);
1070 }
1071
1072 /*
1073  * Fabric module start -- kick starts FCS actions
1074  */
1075 void
1076 bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
1077 {
1078         struct bfa_fcs_fabric_s *fabric;
1079
1080         bfa_trc(fcs, 0);
1081         fabric = &fcs->fabric;
1082         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
1083 }
1084
1085
1086 /*
1087  *   Link up notification from BFA physical port module.
1088  */
1089 void
1090 bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
1091 {
1092         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1093         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
1094 }
1095
1096 /*
1097  *   Link down notification from BFA physical port module.
1098  */
1099 void
1100 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
1101 {
1102         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1103         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
1104 }
1105
1106 /*
1107  *   A child vport is being created in the fabric.
1108  *
1109  *   Call from vport module at vport creation. A list of base port and vports
1110  *   belonging to a fabric is maintained to propagate link events.
1111  *
1112  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1113  *   param[in] vport  - Vport being created.
1114  *
1115  *   @return None (always succeeds)
1116  */
1117 void
1118 bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
1119                         struct bfa_fcs_vport_s *vport)
1120 {
1121         /*
1122          * - add vport to fabric's vport_q
1123          */
1124         bfa_trc(fabric->fcs, fabric->vf_id);
1125
1126         list_add_tail(&vport->qe, &fabric->vport_q);
1127         fabric->num_vports++;
1128         bfa_wc_up(&fabric->wc);
1129 }
1130
1131 /*
1132  *   A child vport is being deleted from fabric.
1133  *
1134  *   Vport is being deleted.
1135  */
1136 void
1137 bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
1138                         struct bfa_fcs_vport_s *vport)
1139 {
1140         list_del(&vport->qe);
1141         fabric->num_vports--;
1142         bfa_wc_down(&fabric->wc);
1143 }
1144
1145
1146 /*
1147  * Lookup for a vport within a fabric given its pwwn
1148  */
1149 struct bfa_fcs_vport_s *
1150 bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
1151 {
1152         struct bfa_fcs_vport_s *vport;
1153         struct list_head              *qe;
1154
1155         list_for_each(qe, &fabric->vport_q) {
1156                 vport = (struct bfa_fcs_vport_s *) qe;
1157                 if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
1158                         return vport;
1159         }
1160
1161         return NULL;
1162 }
1163
1164
1165 /*
1166  *  Get OUI of the attached switch.
1167  *
1168  *  Note : Use of this function should be avoided as much as possible.
1169  *         This function should be used only if there is any requirement
1170 *          to check for FOS version below 6.3.
1171  *         To check if the attached fabric is a brocade fabric, use
1172  *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
1173  *         or above only.
1174  */
1175
1176 u16
1177 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
1178 {
1179         wwn_t fab_nwwn;
1180         u8 *tmp;
1181         u16 oui;
1182
1183         fab_nwwn = fabric->lps->pr_nwwn;
1184
1185         tmp = (u8 *)&fab_nwwn;
1186         oui = (tmp[3] << 8) | tmp[4];
1187
1188         return oui;
1189 }
1190 /*
1191  *              Unsolicited frame receive handling.
1192  */
1193 void
1194 bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1195                        u16 len)
1196 {
1197         u32     pid = fchs->d_id;
1198         struct bfa_fcs_vport_s *vport;
1199         struct list_head              *qe;
1200         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1201         struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
1202
1203         bfa_trc(fabric->fcs, len);
1204         bfa_trc(fabric->fcs, pid);
1205
1206         /*
1207          * Look for our own FLOGI frames being looped back. This means an
1208          * external loopback cable is in place. Our own FLOGI frames are
1209          * sometimes looped back when switch port gets temporarily bypassed.
1210          */
1211         if ((pid == bfa_ntoh3b(FC_FABRIC_PORT)) &&
1212             (els_cmd->els_code == FC_ELS_FLOGI) &&
1213             (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
1214                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
1215                 return;
1216         }
1217
1218         /*
1219          * FLOGI/EVFP exchanges should be consumed by base fabric.
1220          */
1221         if (fchs->d_id == bfa_hton3b(FC_FABRIC_PORT)) {
1222                 bfa_trc(fabric->fcs, pid);
1223                 bfa_fcs_fabric_process_uf(fabric, fchs, len);
1224                 return;
1225         }
1226
1227         if (fabric->bport.pid == pid) {
1228                 /*
1229                  * All authentication frames should be routed to auth
1230                  */
1231                 bfa_trc(fabric->fcs, els_cmd->els_code);
1232                 if (els_cmd->els_code == FC_ELS_AUTH) {
1233                         bfa_trc(fabric->fcs, els_cmd->els_code);
1234                         return;
1235                 }
1236
1237                 bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
1238                 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1239                 return;
1240         }
1241
1242         /*
1243          * look for a matching local port ID
1244          */
1245         list_for_each(qe, &fabric->vport_q) {
1246                 vport = (struct bfa_fcs_vport_s *) qe;
1247                 if (vport->lport.pid == pid) {
1248                         bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
1249                         return;
1250                 }
1251         }
1252
1253         if (!bfa_fcs_fabric_is_switched(fabric))
1254                 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1255
1256         bfa_trc(fabric->fcs, fchs->type);
1257 }
1258
1259 /*
1260  *              Unsolicited frames to be processed by fabric.
1261  */
1262 static void
1263 bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1264                           u16 len)
1265 {
1266         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1267
1268         bfa_trc(fabric->fcs, els_cmd->els_code);
1269
1270         switch (els_cmd->els_code) {
1271         case FC_ELS_FLOGI:
1272                 bfa_fcs_fabric_process_flogi(fabric, fchs, len);
1273                 break;
1274
1275         default:
1276                 /*
1277                  * need to generate a LS_RJT
1278                  */
1279                 break;
1280         }
1281 }
1282
1283 /*
1284  *      Process incoming FLOGI
1285  */
1286 static void
1287 bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
1288                         struct fchs_s *fchs, u16 len)
1289 {
1290         struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
1291         struct bfa_fcs_lport_s *bport = &fabric->bport;
1292
1293         bfa_trc(fabric->fcs, fchs->s_id);
1294
1295         fabric->stats.flogi_rcvd++;
1296         /*
1297          * Check port type. It should be 0 = n-port.
1298          */
1299         if (flogi->csp.port_type) {
1300                 /*
1301                  * @todo: may need to send a LS_RJT
1302                  */
1303                 bfa_trc(fabric->fcs, flogi->port_name);
1304                 fabric->stats.flogi_rejected++;
1305                 return;
1306         }
1307
1308         fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
1309         bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
1310         bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
1311
1312         /*
1313          * Send a Flogi Acc
1314          */
1315         bfa_fcs_fabric_send_flogi_acc(fabric);
1316         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
1317 }
1318
1319 static void
1320 bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
1321 {
1322         struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
1323         struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
1324         struct bfa_s      *bfa = fabric->fcs->bfa;
1325         struct bfa_fcxp_s *fcxp;
1326         u16     reqlen;
1327         struct fchs_s   fchs;
1328
1329         fcxp = bfa_fcs_fcxp_alloc(fabric->fcs, BFA_FALSE);
1330         /*
1331          * Do not expect this failure -- expect remote node to retry
1332          */
1333         if (!fcxp)
1334                 return;
1335
1336         reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
1337                                     bfa_hton3b(FC_FABRIC_PORT),
1338                                     n2n_port->reply_oxid, pcfg->pwwn,
1339                                     pcfg->nwwn,
1340                                     bfa_fcport_get_maxfrsize(bfa),
1341                                     bfa_fcport_get_rx_bbcredit(bfa), 0);
1342
1343         bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
1344                       BFA_FALSE, FC_CLASS_3,
1345                       reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
1346                       FC_MAX_PDUSZ, 0);
1347 }
1348
1349 /*
1350  *   Flogi Acc completion callback.
1351  */
1352 static void
1353 bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
1354                              bfa_status_t status, u32 rsp_len,
1355                              u32 resid_len, struct fchs_s *rspfchs)
1356 {
1357         struct bfa_fcs_fabric_s *fabric = cbarg;
1358
1359         bfa_trc(fabric->fcs, status);
1360 }
1361
1362
1363 /*
1364  * Send AEN notification
1365  */
1366 static void
1367 bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s *port,
1368                         enum bfa_port_aen_event event)
1369 {
1370         struct bfad_s *bfad = (struct bfad_s *)port->fabric->fcs->bfad;
1371         struct bfa_aen_entry_s  *aen_entry;
1372
1373         bfad_get_aen_entry(bfad, aen_entry);
1374         if (!aen_entry)
1375                 return;
1376
1377         aen_entry->aen_data.port.pwwn = bfa_fcs_lport_get_pwwn(port);
1378         aen_entry->aen_data.port.fwwn = bfa_fcs_lport_get_fabric_name(port);
1379
1380         /* Send the AEN notification */
1381         bfad_im_post_vendor_event(aen_entry, bfad, ++port->fcs->fcs_aen_seq,
1382                                   BFA_AEN_CAT_PORT, event);
1383 }
1384
1385 /*
1386  *
1387  * @param[in] fabric - fabric
1388  * @param[in] wwn_t - new fabric name
1389  *
1390  * @return - none
1391  */
1392 void
1393 bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
1394                                wwn_t fabric_name)
1395 {
1396         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
1397         char    pwwn_ptr[BFA_STRING_32];
1398         char    fwwn_ptr[BFA_STRING_32];
1399
1400         bfa_trc(fabric->fcs, fabric_name);
1401
1402         if (fabric->fabric_name == 0) {
1403                 /*
1404                  * With BRCD switches, we don't get Fabric Name in FLOGI.
1405                  * Don't generate a fabric name change event in this case.
1406                  */
1407                 fabric->fabric_name = fabric_name;
1408         } else {
1409                 fabric->fabric_name = fabric_name;
1410                 wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
1411                 wwn2str(fwwn_ptr,
1412                         bfa_fcs_lport_get_fabric_name(&fabric->bport));
1413                 BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
1414                         "Base port WWN = %s Fabric WWN = %s\n",
1415                         pwwn_ptr, fwwn_ptr);
1416                 bfa_fcs_fabric_aen_post(&fabric->bport,
1417                                 BFA_PORT_AEN_FABRIC_NAME_CHANGE);
1418         }
1419 }
1420
1421 void
1422 bfa_cb_lps_flogo_comp(void *bfad, void *uarg)
1423 {
1424         struct bfa_fcs_fabric_s *fabric = uarg;
1425         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOGOCOMP);
1426 }
1427
1428 /*
1429  *      Returns FCS vf structure for a given vf_id.
1430  *
1431  *      param[in]       vf_id - VF_ID
1432  *
1433  *      return
1434  *      If lookup succeeds, retuns fcs vf object, otherwise returns NULL
1435  */
1436 bfa_fcs_vf_t   *
1437 bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
1438 {
1439         bfa_trc(fcs, vf_id);
1440         if (vf_id == FC_VF_ID_NULL)
1441                 return &fcs->fabric;
1442
1443         return NULL;
1444 }
1445
1446 /*
1447  *      Return the list of local logical ports present in the given VF.
1448  *
1449  *      @param[in]      vf      vf for which logical ports are returned
1450  *      @param[out]     lpwwn   returned logical port wwn list
1451  *      @param[in,out]  nlports in:size of lpwwn list;
1452  *                              out:total elements present,
1453  *                              actual elements returned is limited by the size
1454  */
1455 void
1456 bfa_fcs_vf_get_ports(bfa_fcs_vf_t *vf, wwn_t lpwwn[], int *nlports)
1457 {
1458         struct list_head *qe;
1459         struct bfa_fcs_vport_s *vport;
1460         int     i = 0;
1461         struct bfa_fcs_s        *fcs;
1462
1463         if (vf == NULL || lpwwn == NULL || *nlports == 0)
1464                 return;
1465
1466         fcs = vf->fcs;
1467
1468         bfa_trc(fcs, vf->vf_id);
1469         bfa_trc(fcs, (uint32_t) *nlports);
1470
1471         lpwwn[i++] = vf->bport.port_cfg.pwwn;
1472
1473         list_for_each(qe, &vf->vport_q) {
1474                 if (i >= *nlports)
1475                         break;
1476
1477                 vport = (struct bfa_fcs_vport_s *) qe;
1478                 lpwwn[i++] = vport->lport.port_cfg.pwwn;
1479         }
1480
1481         bfa_trc(fcs, i);
1482         *nlports = i;
1483 }
1484
1485 /*
1486  * BFA FCS PPORT ( physical port)
1487  */
1488 static void
1489 bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
1490 {
1491         struct bfa_fcs_s      *fcs = cbarg;
1492
1493         bfa_trc(fcs, event);
1494
1495         switch (event) {
1496         case BFA_PORT_LINKUP:
1497                 bfa_fcs_fabric_link_up(&fcs->fabric);
1498                 break;
1499
1500         case BFA_PORT_LINKDOWN:
1501                 bfa_fcs_fabric_link_down(&fcs->fabric);
1502                 break;
1503
1504         default:
1505                 WARN_ON(1);
1506         }
1507 }
1508
1509 /*
1510  * BFA FCS UF ( Unsolicited Frames)
1511  */
1512
1513 /*
1514  *              BFA callback for unsolicited frame receive handler.
1515  *
1516  * @param[in]           cbarg           callback arg for receive handler
1517  * @param[in]           uf              unsolicited frame descriptor
1518  *
1519  * @return None
1520  */
1521 static void
1522 bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
1523 {
1524         struct bfa_fcs_s        *fcs = (struct bfa_fcs_s *) cbarg;
1525         struct fchs_s   *fchs = bfa_uf_get_frmbuf(uf);
1526         u16     len = bfa_uf_get_frmlen(uf);
1527         struct fc_vft_s *vft;
1528         struct bfa_fcs_fabric_s *fabric;
1529
1530         /*
1531          * check for VFT header
1532          */
1533         if (fchs->routing == FC_RTG_EXT_HDR &&
1534             fchs->cat_info == FC_CAT_VFT_HDR) {
1535                 bfa_stats(fcs, uf.tagged);
1536                 vft = bfa_uf_get_frmbuf(uf);
1537                 if (fcs->port_vfid == vft->vf_id)
1538                         fabric = &fcs->fabric;
1539                 else
1540                         fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
1541
1542                 /*
1543                  * drop frame if vfid is unknown
1544                  */
1545                 if (!fabric) {
1546                         WARN_ON(1);
1547                         bfa_stats(fcs, uf.vfid_unknown);
1548                         bfa_uf_free(uf);
1549                         return;
1550                 }
1551
1552                 /*
1553                  * skip vft header
1554                  */
1555                 fchs = (struct fchs_s *) (vft + 1);
1556                 len -= sizeof(struct fc_vft_s);
1557
1558                 bfa_trc(fcs, vft->vf_id);
1559         } else {
1560                 bfa_stats(fcs, uf.untagged);
1561                 fabric = &fcs->fabric;
1562         }
1563
1564         bfa_trc(fcs, ((u32 *) fchs)[0]);
1565         bfa_trc(fcs, ((u32 *) fchs)[1]);
1566         bfa_trc(fcs, ((u32 *) fchs)[2]);
1567         bfa_trc(fcs, ((u32 *) fchs)[3]);
1568         bfa_trc(fcs, ((u32 *) fchs)[4]);
1569         bfa_trc(fcs, ((u32 *) fchs)[5]);
1570         bfa_trc(fcs, len);
1571
1572         bfa_fcs_fabric_uf_recv(fabric, fchs, len);
1573         bfa_uf_free(uf);
1574 }
1575
1576 /*
1577  * fcs attach -- called once to initialize data structures at driver attach time
1578  */
1579 void
1580 bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
1581                bfa_boolean_t min_cfg)
1582 {
1583         struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
1584
1585         fcs->bfa = bfa;
1586         fcs->bfad = bfad;
1587         fcs->min_cfg = min_cfg;
1588         fcs->num_rport_logins = 0;
1589
1590         bfa->fcs = BFA_TRUE;
1591         fcbuild_init();
1592
1593         bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
1594         bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
1595
1596         memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
1597
1598         /*
1599          * Initialize base fabric.
1600          */
1601         fabric->fcs = fcs;
1602         INIT_LIST_HEAD(&fabric->vport_q);
1603         INIT_LIST_HEAD(&fabric->vf_q);
1604         fabric->lps = bfa_lps_alloc(fcs->bfa);
1605         WARN_ON(!fabric->lps);
1606
1607         /*
1608          * Initialize fabric delete completion handler. Fabric deletion is
1609          * complete when the last vport delete is complete.
1610          */
1611         bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
1612         bfa_wc_up(&fabric->wc); /* For the base port */
1613
1614         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
1615         bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
1616 }