drivers/scsi/bfa/bfa_fcs.c

   1 /*
   2  * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   3  * All rights reserved
   4  * www.brocade.com
   5  *
   6  * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License (GPL) Version 2 as
  10  * published by the Free Software Foundation
  11  *
  12  * This program is distributed in the hope that it will be useful, but
  13  * WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * General Public License for more details.
  16  */
  17
  18 /*
  19  *  bfa_fcs.c BFA FCS main
  20  */
  21
  22 #include "bfad_drv.h"
  23 #include "bfad_im.h"
  24 #include "bfa_fcs.h"
  25 #include "bfa_fcbuild.h"
  26
  27 BFA_TRC_FILE(FCS, FCS);
  28
  29 /*
  30  * FCS sub-modules
  31  */
  32 struct bfa_fcs_mod_s {
  33         void            (*attach) (struct bfa_fcs_s *fcs);
  34         void            (*modinit) (struct bfa_fcs_s *fcs);
  35         void            (*modexit) (struct bfa_fcs_s *fcs);
  36 };
  37
  38 #define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
  39
  40 static struct bfa_fcs_mod_s fcs_modules[] = {
  41         { bfa_fcs_port_attach, NULL, NULL },
  42         { bfa_fcs_uf_attach, NULL, NULL },
  43         { bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
  44           bfa_fcs_fabric_modexit },
  45 };
  46
  47 /*
  48  *  fcs_api BFA FCS API
  49  */
  50
  51 static void
  52 bfa_fcs_exit_comp(void *fcs_cbarg)
  53 {
  54         struct bfa_fcs_s      *fcs = fcs_cbarg;
  55         struct bfad_s         *bfad = fcs->bfad;
  56
  57         complete(&bfad->comp);
  58 }
  59
  60
  61
  62 /*
  63  *  fcs_api BFA FCS API
  64  */
  65
  66 /*
  67  * fcs attach -- called once to initialize data structures at driver attach time
  68  */
  69 void
  70 bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
  71                bfa_boolean_t min_cfg)
  72 {
  73         int             i;
  74         struct bfa_fcs_mod_s  *mod;
  75
  76         fcs->bfa = bfa;
  77         fcs->bfad = bfad;
  78         fcs->min_cfg = min_cfg;
  79
  80         bfa->fcs = BFA_TRUE;
  81         fcbuild_init();
  82
  83         for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
  84                 mod = &fcs_modules[i];
  85                 if (mod->attach)
  86                         mod->attach(fcs);
  87         }
  88 }
  89
  90 /*
  91  * fcs initialization, called once after bfa initialization is complete
  92  */
  93 void
  94 bfa_fcs_init(struct bfa_fcs_s *fcs)
  95 {
  96         int     i;
  97         struct bfa_fcs_mod_s  *mod;
  98
  99         for (i = 0; i < sizeof(fcs_modules) / sizeof(fcs_modules[0]); i++) {
 100                 mod = &fcs_modules[i];
 101                 if (mod->modinit)
 102                         mod->modinit(fcs);
 103         }
 104 }
 105
 106 /*
 107  * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
 108  * with values learned during bfa_init firmware GETATTR REQ.
 109  */
 110 void
 111 bfa_fcs_update_cfg(struct bfa_fcs_s *fcs)
 112 {
 113         struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
 114         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 115         struct bfa_ioc_s *ioc = &fabric->fcs->bfa->ioc;
 116
 117         port_cfg->nwwn = ioc->attr->nwwn;
 118         port_cfg->pwwn = ioc->attr->pwwn;
 119 }
 120
 121 /*
 122  * fcs pbc vport initialization
 123  */
 124 void
 125 bfa_fcs_pbc_vport_init(struct bfa_fcs_s *fcs)
 126 {
 127         int i, npbc_vports;
 128         struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
 129
 130         /* Initialize pbc vports */
 131         if (!fcs->min_cfg) {
 132                 npbc_vports =
 133                         bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
 134                 for (i = 0; i < npbc_vports; i++)
 135                         bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
 136         }
 137 }
 138
 139 /*
 140  *      brief
 141  *              FCS driver details initialization.
 142  *
 143  *      param[in]               fcs             FCS instance
 144  *      param[in]               driver_info     Driver Details
 145  *
 146  *      return None
 147  */
 148 void
 149 bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
 150                         struct bfa_fcs_driver_info_s *driver_info)
 151 {
 152
 153         fcs->driver_info = *driver_info;
 154
 155         bfa_fcs_fabric_psymb_init(&fcs->fabric);
 156 }
 157
 158 /*
 159  *      brief
 160  *              FCS instance cleanup and exit.
 161  *
 162  *      param[in]               fcs                     FCS instance
 163  *      return None
 164  */
 165 void
 166 bfa_fcs_exit(struct bfa_fcs_s *fcs)
 167 {
 168         struct bfa_fcs_mod_s  *mod;
 169         int             nmods, i;
 170
 171         bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
 172
 173         nmods = sizeof(fcs_modules) / sizeof(fcs_modules[0]);
 174
 175         for (i = 0; i < nmods; i++) {
 176
 177                 mod = &fcs_modules[i];
 178                 if (mod->modexit) {
 179                         bfa_wc_up(&fcs->wc);
 180                         mod->modexit(fcs);
 181                 }
 182         }
 183
 184         bfa_wc_wait(&fcs->wc);
 185 }
 186
 187
 188 /*
 189  * Fabric module implementation.
 190  */
 191
 192 #define BFA_FCS_FABRIC_RETRY_DELAY      (2000)  /* Milliseconds */
 193 #define BFA_FCS_FABRIC_CLEANUP_DELAY    (10000) /* Milliseconds */
 194
 195 #define bfa_fcs_fabric_set_opertype(__fabric) do {                      \
 196         if (bfa_fcport_get_topology((__fabric)->fcs->bfa)               \
 197                                 == BFA_PORT_TOPOLOGY_P2P) {             \
 198                 if (fabric->fab_type == BFA_FCS_FABRIC_SWITCHED)        \
 199                         (__fabric)->oper_type = BFA_PORT_TYPE_NPORT;    \
 200                 else                                                    \
 201                         (__fabric)->oper_type = BFA_PORT_TYPE_P2P;      \
 202         } else                                                          \
 203                 (__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;           \
 204 } while (0)
 205
 206 /*
 207  * forward declarations
 208  */
 209 static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
 210 static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
 211 static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
 212 static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
 213 static void bfa_fcs_fabric_delay(void *cbarg);
 214 static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
 215 static void bfa_fcs_fabric_delete_comp(void *cbarg);
 216 static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
 217                                       struct fchs_s *fchs, u16 len);
 218 static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
 219                                          struct fchs_s *fchs, u16 len);
 220 static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
 221 static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
 222                                          struct bfa_fcxp_s *fcxp, void *cbarg,
 223                                          bfa_status_t status,
 224                                          u32 rsp_len,
 225                                          u32 resid_len,
 226                                          struct fchs_s *rspfchs);
 227 static u8 bfa_fcs_fabric_oper_bbscn(struct bfa_fcs_fabric_s *fabric);
 228 static bfa_boolean_t bfa_fcs_fabric_is_bbscn_enabled(
 229                                 struct bfa_fcs_fabric_s *fabric);
 230
 231 static void     bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
 232                                          enum bfa_fcs_fabric_event event);
 233 static void     bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 234                                           enum bfa_fcs_fabric_event event);
 235 static void     bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
 236                                            enum bfa_fcs_fabric_event event);
 237 static void     bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
 238                                         enum bfa_fcs_fabric_event event);
 239 static void     bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
 240                                               enum bfa_fcs_fabric_event event);
 241 static void     bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
 242                                        enum bfa_fcs_fabric_event event);
 243 static void     bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
 244                                            enum bfa_fcs_fabric_event event);
 245 static void     bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
 246                                        enum bfa_fcs_fabric_event event);
 247 static void     bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
 248                                             enum bfa_fcs_fabric_event event);
 249 static void     bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
 250                                            enum bfa_fcs_fabric_event event);
 251 static void     bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
 252                                            enum bfa_fcs_fabric_event event);
 253 /*
 254  *   Beginning state before fabric creation.
 255  */
 256 static void
 257 bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
 258                          enum bfa_fcs_fabric_event event)
 259 {
 260         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 261         bfa_trc(fabric->fcs, event);
 262
 263         switch (event) {
 264         case BFA_FCS_FABRIC_SM_CREATE:
 265                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
 266                 bfa_fcs_fabric_init(fabric);
 267                 bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
 268                 break;
 269
 270         case BFA_FCS_FABRIC_SM_LINK_UP:
 271         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 272                 break;
 273
 274         default:
 275                 bfa_sm_fault(fabric->fcs, event);
 276         }
 277 }
 278
 279 /*
 280  *   Beginning state before fabric creation.
 281  */
 282 static void
 283 bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 284                           enum bfa_fcs_fabric_event event)
 285 {
 286         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 287         bfa_trc(fabric->fcs, event);
 288
 289         switch (event) {
 290         case BFA_FCS_FABRIC_SM_START:
 291                 if (bfa_fcport_is_linkup(fabric->fcs->bfa)) {
 292                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 293                         bfa_fcs_fabric_login(fabric);
 294                 } else
 295                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 296                 break;
 297
 298         case BFA_FCS_FABRIC_SM_LINK_UP:
 299         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 300                 break;
 301
 302         case BFA_FCS_FABRIC_SM_DELETE:
 303                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 304                 bfa_fcs_fabric_delete(fabric);
 305                 break;
 306
 307         default:
 308                 bfa_sm_fault(fabric->fcs, event);
 309         }
 310 }
 311
 312 /*
 313  *   Link is down, awaiting LINK UP event from port. This is also the
 314  *   first state at fabric creation.
 315  */
 316 static void
 317 bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
 318                            enum bfa_fcs_fabric_event event)
 319 {
 320         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 321         bfa_trc(fabric->fcs, event);
 322
 323         switch (event) {
 324         case BFA_FCS_FABRIC_SM_LINK_UP:
 325                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 326                 bfa_fcs_fabric_login(fabric);
 327                 break;
 328
 329         case BFA_FCS_FABRIC_SM_RETRY_OP:
 330                 break;
 331
 332         case BFA_FCS_FABRIC_SM_DELETE:
 333                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 334                 bfa_fcs_fabric_delete(fabric);
 335                 break;
 336
 337         default:
 338                 bfa_sm_fault(fabric->fcs, event);
 339         }
 340 }
 341
 342 /*
 343  *   FLOGI is in progress, awaiting FLOGI reply.
 344  */
 345 static void
 346 bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
 347                         enum bfa_fcs_fabric_event event)
 348 {
 349         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 350         bfa_trc(fabric->fcs, event);
 351
 352         switch (event) {
 353         case BFA_FCS_FABRIC_SM_CONT_OP:
 354
 355                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 356                                            fabric->bb_credit,
 357                                            bfa_fcs_fabric_oper_bbscn(fabric));
 358                 fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
 359
 360                 if (fabric->auth_reqd && fabric->is_auth) {
 361                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
 362                         bfa_trc(fabric->fcs, event);
 363                 } else {
 364                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 365                         bfa_fcs_fabric_notify_online(fabric);
 366                 }
 367                 break;
 368
 369         case BFA_FCS_FABRIC_SM_RETRY_OP:
 370                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
 371                 bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
 372                                 bfa_fcs_fabric_delay, fabric,
 373                                 BFA_FCS_FABRIC_RETRY_DELAY);
 374                 break;
 375
 376         case BFA_FCS_FABRIC_SM_LOOPBACK:
 377                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
 378                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 379                 bfa_fcs_fabric_set_opertype(fabric);
 380                 break;
 381
 382         case BFA_FCS_FABRIC_SM_NO_FABRIC:
 383                 fabric->fab_type = BFA_FCS_FABRIC_N2N;
 384                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 385                                            fabric->bb_credit,
 386                                            bfa_fcs_fabric_oper_bbscn(fabric));
 387                 bfa_fcs_fabric_notify_online(fabric);
 388                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
 389                 break;
 390
 391         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 392                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 393                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 394                 break;
 395
 396         case BFA_FCS_FABRIC_SM_DELETE:
 397                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 398                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 399                 bfa_fcs_fabric_delete(fabric);
 400                 break;
 401
 402         default:
 403                 bfa_sm_fault(fabric->fcs, event);
 404         }
 405 }
 406
 407
 408 static void
 409 bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
 410                               enum bfa_fcs_fabric_event event)
 411 {
 412         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 413         bfa_trc(fabric->fcs, event);
 414
 415         switch (event) {
 416         case BFA_FCS_FABRIC_SM_DELAYED:
 417                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 418                 bfa_fcs_fabric_login(fabric);
 419                 break;
 420
 421         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 422                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 423                 bfa_timer_stop(&fabric->delay_timer);
 424                 break;
 425
 426         case BFA_FCS_FABRIC_SM_DELETE:
 427                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 428                 bfa_timer_stop(&fabric->delay_timer);
 429                 bfa_fcs_fabric_delete(fabric);
 430                 break;
 431
 432         default:
 433                 bfa_sm_fault(fabric->fcs, event);
 434         }
 435 }
 436
 437 /*
 438  *   Authentication is in progress, awaiting authentication results.
 439  */
 440 static void
 441 bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
 442                        enum bfa_fcs_fabric_event event)
 443 {
 444         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 445         bfa_trc(fabric->fcs, event);
 446
 447         switch (event) {
 448         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
 449                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
 450                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 451                 break;
 452
 453         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
 454                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 455                 bfa_fcs_fabric_notify_online(fabric);
 456                 break;
 457
 458         case BFA_FCS_FABRIC_SM_PERF_EVFP:
 459                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
 460                 break;
 461
 462         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 463                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 464                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 465                 break;
 466
 467         case BFA_FCS_FABRIC_SM_DELETE:
 468                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 469                 bfa_fcs_fabric_delete(fabric);
 470                 break;
 471
 472         default:
 473                 bfa_sm_fault(fabric->fcs, event);
 474         }
 475 }
 476
 477 /*
 478  *   Authentication failed
 479  */
 480 void
 481 bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
 482                               enum bfa_fcs_fabric_event event)
 483 {
 484         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 485         bfa_trc(fabric->fcs, event);
 486
 487         switch (event) {
 488         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 489                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 490                 bfa_fcs_fabric_notify_offline(fabric);
 491                 break;
 492
 493         case BFA_FCS_FABRIC_SM_DELETE:
 494                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 495                 bfa_fcs_fabric_delete(fabric);
 496                 break;
 497
 498         default:
 499                 bfa_sm_fault(fabric->fcs, event);
 500         }
 501 }
 502
 503 /*
 504  *   Port is in loopback mode.
 505  */
 506 void
 507 bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
 508                            enum bfa_fcs_fabric_event event)
 509 {
 510         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 511         bfa_trc(fabric->fcs, event);
 512
 513         switch (event) {
 514         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 515                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 516                 bfa_fcs_fabric_notify_offline(fabric);
 517                 break;
 518
 519         case BFA_FCS_FABRIC_SM_DELETE:
 520                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 521                 bfa_fcs_fabric_delete(fabric);
 522                 break;
 523
 524         default:
 525                 bfa_sm_fault(fabric->fcs, event);
 526         }
 527 }
 528
 529 /*
 530  *   There is no attached fabric - private loop or NPort-to-NPort topology.
 531  */
 532 static void
 533 bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
 534                            enum bfa_fcs_fabric_event event)
 535 {
 536         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 537         bfa_trc(fabric->fcs, event);
 538
 539         switch (event) {
 540         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 541                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 542                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 543                 bfa_fcs_fabric_notify_offline(fabric);
 544                 break;
 545
 546         case BFA_FCS_FABRIC_SM_DELETE:
 547                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 548                 bfa_fcs_fabric_delete(fabric);
 549                 break;
 550
 551         case BFA_FCS_FABRIC_SM_NO_FABRIC:
 552                 bfa_trc(fabric->fcs, fabric->bb_credit);
 553                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 554                                            fabric->bb_credit,
 555                                            bfa_fcs_fabric_oper_bbscn(fabric));
 556                 break;
 557
 558         case BFA_FCS_FABRIC_SM_RETRY_OP:
 559                 break;
 560
 561         default:
 562                 bfa_sm_fault(fabric->fcs, event);
 563         }
 564 }
 565
 566 /*
 567  *   Fabric is online - normal operating state.
 568  */
 569 void
 570 bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
 571                          enum bfa_fcs_fabric_event event)
 572 {
 573         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 574         bfa_trc(fabric->fcs, event);
 575
 576         switch (event) {
 577         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 578                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 579                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 580                 bfa_fcs_fabric_notify_offline(fabric);
 581                 break;
 582
 583         case BFA_FCS_FABRIC_SM_DELETE:
 584                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 585                 bfa_fcs_fabric_delete(fabric);
 586                 break;
 587
 588         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
 589                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
 590                 bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
 591                 break;
 592
 593         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
 594                 break;
 595
 596         default:
 597                 bfa_sm_fault(fabric->fcs, event);
 598         }
 599 }
 600
 601 /*
 602  *   Exchanging virtual fabric parameters.
 603  */
 604 static void
 605 bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
 606                        enum bfa_fcs_fabric_event event)
 607 {
 608         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 609         bfa_trc(fabric->fcs, event);
 610
 611         switch (event) {
 612         case BFA_FCS_FABRIC_SM_CONT_OP:
 613                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
 614                 break;
 615
 616         case BFA_FCS_FABRIC_SM_ISOLATE:
 617                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
 618                 break;
 619
 620         default:
 621                 bfa_sm_fault(fabric->fcs, event);
 622         }
 623 }
 624
 625 /*
 626  *   EVFP exchange complete and VFT tagging is enabled.
 627  */
 628 static void
 629 bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
 630                             enum bfa_fcs_fabric_event event)
 631 {
 632         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 633         bfa_trc(fabric->fcs, event);
 634 }
 635
 636 /*
 637  *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
 638  */
 639 static void
 640 bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
 641                            enum bfa_fcs_fabric_event event)
 642 {
 643         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
 644         char    pwwn_ptr[BFA_STRING_32];
 645
 646         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 647         bfa_trc(fabric->fcs, event);
 648         wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
 649
 650         BFA_LOG(KERN_INFO, bfad, bfa_log_level,
 651                 "Port is isolated due to VF_ID mismatch. "
 652                 "PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
 653                 pwwn_ptr, fabric->fcs->port_vfid,
 654                 fabric->event_arg.swp_vfid);
 655 }
 656
 657 /*
 658  *   Fabric is being deleted, awaiting vport delete completions.
 659  */
 660 static void
 661 bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
 662                            enum bfa_fcs_fabric_event event)
 663 {
 664         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 665         bfa_trc(fabric->fcs, event);
 666
 667         switch (event) {
 668         case BFA_FCS_FABRIC_SM_DELCOMP:
 669                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
 670                 bfa_wc_down(&fabric->fcs->wc);
 671                 break;
 672
 673         case BFA_FCS_FABRIC_SM_LINK_UP:
 674                 break;
 675
 676         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 677                 bfa_fcs_fabric_notify_offline(fabric);
 678                 break;
 679
 680         default:
 681                 bfa_sm_fault(fabric->fcs, event);
 682         }
 683 }
 684
 685
 686
 687 /*
 688  *  fcs_fabric_private fabric private functions
 689  */
 690
 691 static void
 692 bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
 693 {
 694         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 695
 696         port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
 697         port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
 698         port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
 699 }
 700
 701 /*
 702  * Port Symbolic Name Creation for base port.
 703  */
 704 void
 705 bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
 706 {
 707         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 708         char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
 709         struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
 710
 711         bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
 712
 713         /* Model name/number */
 714         strncpy((char *)&port_cfg->sym_name, model,
 715                 BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
 716         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 717                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 718
 719         /* Driver Version */
 720         strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
 721                 BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
 722         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 723                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 724
 725         /* Host machine name */
 726         strncat((char *)&port_cfg->sym_name,
 727                 (char *)driver_info->host_machine_name,
 728                 BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
 729         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 730                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 731
 732         /*
 733          * Host OS Info :
 734          * If OS Patch Info is not there, do not truncate any bytes from the
 735          * OS name string and instead copy the entire OS info string (64 bytes).
 736          */
 737         if (driver_info->host_os_patch[0] == '\0') {
 738                 strncat((char *)&port_cfg->sym_name,
 739                         (char *)driver_info->host_os_name,
 740                         BFA_FCS_OS_STR_LEN);
 741                 strncat((char *)&port_cfg->sym_name,
 742                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 743                         sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 744         } else {
 745                 strncat((char *)&port_cfg->sym_name,
 746                         (char *)driver_info->host_os_name,
 747                         BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
 748                 strncat((char *)&port_cfg->sym_name,
 749                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 750                         sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 751
 752                 /* Append host OS Patch Info */
 753                 strncat((char *)&port_cfg->sym_name,
 754                         (char *)driver_info->host_os_patch,
 755                         BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
 756         }
 757
 758         /* null terminate */
 759         port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
 760 }
 761
 762 /*
 763  * bfa lps login completion callback
 764  */
 765 void
 766 bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
 767 {
 768         struct bfa_fcs_fabric_s *fabric = uarg;
 769
 770         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 771         bfa_trc(fabric->fcs, status);
 772
 773         switch (status) {
 774         case BFA_STATUS_OK:
 775                 fabric->stats.flogi_accepts++;
 776                 break;
 777
 778         case BFA_STATUS_INVALID_MAC:
 779                 /* Only for CNA */
 780                 fabric->stats.flogi_acc_err++;
 781                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 782
 783                 return;
 784
 785         case BFA_STATUS_EPROTOCOL:
 786                 switch (fabric->lps->ext_status) {
 787                 case BFA_EPROTO_BAD_ACCEPT:
 788                         fabric->stats.flogi_acc_err++;
 789                         break;
 790
 791                 case BFA_EPROTO_UNKNOWN_RSP:
 792                         fabric->stats.flogi_unknown_rsp++;
 793                         break;
 794
 795                 default:
 796                         break;
 797                 }
 798                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 799
 800                 return;
 801
 802         case BFA_STATUS_FABRIC_RJT:
 803                 fabric->stats.flogi_rejects++;
 804                 if (fabric->lps->lsrjt_rsn == FC_LS_RJT_RSN_LOGICAL_ERROR &&
 805                     fabric->lps->lsrjt_expl == FC_LS_RJT_EXP_NO_ADDL_INFO)
 806                         fabric->fcs->bbscn_flogi_rjt = BFA_TRUE;
 807
 808                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 809                 return;
 810
 811         default:
 812                 fabric->stats.flogi_rsp_err++;
 813                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 814                 return;
 815         }
 816
 817         fabric->bb_credit = fabric->lps->pr_bbcred;
 818         bfa_trc(fabric->fcs, fabric->bb_credit);
 819
 820         if (!(fabric->lps->brcd_switch))
 821                 fabric->fabric_name =  fabric->lps->pr_nwwn;
 822
 823         /*
 824          * Check port type. It should be 1 = F-port.
 825          */
 826         if (fabric->lps->fport) {
 827                 fabric->bport.pid = fabric->lps->lp_pid;
 828                 fabric->is_npiv = fabric->lps->npiv_en;
 829                 fabric->is_auth = fabric->lps->auth_req;
 830                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
 831         } else {
 832                 /*
 833                  * Nport-2-Nport direct attached
 834                  */
 835                 fabric->bport.port_topo.pn2n.rem_port_wwn =
 836                         fabric->lps->pr_pwwn;
 837                 fabric->fab_type = BFA_FCS_FABRIC_N2N;
 838                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
 839         }
 840
 841         bfa_trc(fabric->fcs, fabric->bport.pid);
 842         bfa_trc(fabric->fcs, fabric->is_npiv);
 843         bfa_trc(fabric->fcs, fabric->is_auth);
 844 }
 845 /*
 846  *              Allocate and send FLOGI.
 847  */
 848 static void
 849 bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
 850 {
 851         struct bfa_s            *bfa = fabric->fcs->bfa;
 852         struct bfa_lport_cfg_s  *pcfg = &fabric->bport.port_cfg;
 853         u8                      alpa = 0, bb_scn = 0;
 854
 855         if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
 856                 alpa = bfa_fcport_get_myalpa(bfa);
 857
 858         if (bfa_fcs_fabric_is_bbscn_enabled(fabric) &&
 859             (!fabric->fcs->bbscn_flogi_rjt))
 860                 bb_scn = BFA_FCS_PORT_DEF_BB_SCN;
 861
 862         bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
 863                       pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd, bb_scn);
 864
 865         fabric->stats.flogi_sent++;
 866 }
 867
 868 static void
 869 bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
 870 {
 871         struct bfa_fcs_vport_s *vport;
 872         struct list_head              *qe, *qen;
 873
 874         bfa_trc(fabric->fcs, fabric->fabric_name);
 875
 876         bfa_fcs_fabric_set_opertype(fabric);
 877         fabric->stats.fabric_onlines++;
 878
 879         /*
 880          * notify online event to base and then virtual ports
 881          */
 882         bfa_fcs_lport_online(&fabric->bport);
 883
 884         list_for_each_safe(qe, qen, &fabric->vport_q) {
 885                 vport = (struct bfa_fcs_vport_s *) qe;
 886                 bfa_fcs_vport_online(vport);
 887         }
 888 }
 889
 890 static void
 891 bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
 892 {
 893         struct bfa_fcs_vport_s *vport;
 894         struct list_head              *qe, *qen;
 895
 896         bfa_trc(fabric->fcs, fabric->fabric_name);
 897         fabric->stats.fabric_offlines++;
 898
 899         /*
 900          * notify offline event first to vports and then base port.
 901          */
 902         list_for_each_safe(qe, qen, &fabric->vport_q) {
 903                 vport = (struct bfa_fcs_vport_s *) qe;
 904                 bfa_fcs_vport_offline(vport);
 905         }
 906
 907         bfa_fcs_lport_offline(&fabric->bport);
 908
 909         fabric->fabric_name = 0;
 910         fabric->fabric_ip_addr[0] = 0;
 911 }
 912
 913 static void
 914 bfa_fcs_fabric_delay(void *cbarg)
 915 {
 916         struct bfa_fcs_fabric_s *fabric = cbarg;
 917
 918         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
 919 }
 920
 921 /*
 922  * Computes operating BB_SCN value
 923  */
 924 static u8
 925 bfa_fcs_fabric_oper_bbscn(struct bfa_fcs_fabric_s *fabric)
 926 {
 927         u8      pr_bbscn = fabric->lps->pr_bbscn;
 928         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fabric->fcs->bfa);
 929
 930         if (!(fcport->cfg.bb_scn_state && pr_bbscn))
 931                 return 0;
 932
 933         /* return max of local/remote bb_scn values */
 934         return ((pr_bbscn > BFA_FCS_PORT_DEF_BB_SCN) ?
 935                 pr_bbscn : BFA_FCS_PORT_DEF_BB_SCN);
 936 }
 937
 938 /*
 939  * Check if BB_SCN can be enabled.
 940  */
 941 static bfa_boolean_t
 942 bfa_fcs_fabric_is_bbscn_enabled(struct bfa_fcs_fabric_s *fabric)
 943 {
 944         struct bfa_fcport_s *fcport = BFA_FCPORT_MOD(fabric->fcs->bfa);
 945
 946         if (bfa_ioc_get_fcmode(&fabric->fcs->bfa->ioc) &&
 947                         fcport->cfg.bb_scn_state &&
 948                         !bfa_fcport_is_qos_enabled(fabric->fcs->bfa) &&
 949                         !bfa_fcport_is_trunk_enabled(fabric->fcs->bfa))
 950                 return BFA_TRUE;
 951         else
 952                 return BFA_FALSE;
 953 }
 954
 955 /*
 956  * Delete all vports and wait for vport delete completions.
 957  */
 958 static void
 959 bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
 960 {
 961         struct bfa_fcs_vport_s *vport;
 962         struct list_head              *qe, *qen;
 963
 964         list_for_each_safe(qe, qen, &fabric->vport_q) {
 965                 vport = (struct bfa_fcs_vport_s *) qe;
 966                 bfa_fcs_vport_fcs_delete(vport);
 967         }
 968
 969         bfa_fcs_lport_delete(&fabric->bport);
 970         bfa_wc_wait(&fabric->wc);
 971 }
 972
 973 static void
 974 bfa_fcs_fabric_delete_comp(void *cbarg)
 975 {
 976         struct bfa_fcs_fabric_s *fabric = cbarg;
 977
 978         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
 979 }
 980
 981 /*
 982  *  fcs_fabric_public fabric public functions
 983  */
 984
 985 /*
 986  * Attach time initialization.
 987  */
 988 void
 989 bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
 990 {
 991         struct bfa_fcs_fabric_s *fabric;
 992
 993         fabric = &fcs->fabric;
 994         memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
 995
 996         /*
 997          * Initialize base fabric.
 998          */
 999         fabric->fcs = fcs;
1000         INIT_LIST_HEAD(&fabric->vport_q);
1001         INIT_LIST_HEAD(&fabric->vf_q);
1002         fabric->lps = bfa_lps_alloc(fcs->bfa);
1003         WARN_ON(!fabric->lps);
1004
1005         /*
1006          * Initialize fabric delete completion handler. Fabric deletion is
1007          * complete when the last vport delete is complete.
1008          */
1009         bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
1010         bfa_wc_up(&fabric->wc); /* For the base port */
1011
1012         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
1013         bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
1014 }
1015
1016 void
1017 bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
1018 {
1019         bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
1020         bfa_trc(fcs, 0);
1021 }
1022
1023 /*
1024  *   Module cleanup
1025  */
1026 void
1027 bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
1028 {
1029         struct bfa_fcs_fabric_s *fabric;
1030
1031         bfa_trc(fcs, 0);
1032
1033         /*
1034          * Cleanup base fabric.
1035          */
1036         fabric = &fcs->fabric;
1037         bfa_lps_delete(fabric->lps);
1038         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
1039 }
1040
1041 /*
1042  * Fabric module start -- kick starts FCS actions
1043  */
1044 void
1045 bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
1046 {
1047         struct bfa_fcs_fabric_s *fabric;
1048
1049         bfa_trc(fcs, 0);
1050         fabric = &fcs->fabric;
1051         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
1052 }
1053
1054
1055 /*
1056  *   Link up notification from BFA physical port module.
1057  */
1058 void
1059 bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
1060 {
1061         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1062         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
1063 }
1064
1065 /*
1066  *   Link down notification from BFA physical port module.
1067  */
1068 void
1069 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
1070 {
1071         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1072         fabric->fcs->bbscn_flogi_rjt = BFA_FALSE;
1073         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
1074 }
1075
1076 /*
1077  *   A child vport is being created in the fabric.
1078  *
1079  *   Call from vport module at vport creation. A list of base port and vports
1080  *   belonging to a fabric is maintained to propagate link events.
1081  *
1082  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1083  *   param[in] vport  - Vport being created.
1084  *
1085  *   @return None (always succeeds)
1086  */
1087 void
1088 bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
1089                         struct bfa_fcs_vport_s *vport)
1090 {
1091         /*
1092          * - add vport to fabric's vport_q
1093          */
1094         bfa_trc(fabric->fcs, fabric->vf_id);
1095
1096         list_add_tail(&vport->qe, &fabric->vport_q);
1097         fabric->num_vports++;
1098         bfa_wc_up(&fabric->wc);
1099 }
1100
1101 /*
1102  *   A child vport is being deleted from fabric.
1103  *
1104  *   Vport is being deleted.
1105  */
1106 void
1107 bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
1108                         struct bfa_fcs_vport_s *vport)
1109 {
1110         list_del(&vport->qe);
1111         fabric->num_vports--;
1112         bfa_wc_down(&fabric->wc);
1113 }
1114
1115
1116 /*
1117  * Lookup for a vport within a fabric given its pwwn
1118  */
1119 struct bfa_fcs_vport_s *
1120 bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
1121 {
1122         struct bfa_fcs_vport_s *vport;
1123         struct list_head              *qe;
1124
1125         list_for_each(qe, &fabric->vport_q) {
1126                 vport = (struct bfa_fcs_vport_s *) qe;
1127                 if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
1128                         return vport;
1129         }
1130
1131         return NULL;
1132 }
1133
1134
1135 /*
1136  *  Get OUI of the attached switch.
1137  *
1138  *  Note : Use of this function should be avoided as much as possible.
1139  *         This function should be used only if there is any requirement
1140 *          to check for FOS version below 6.3.
1141  *         To check if the attached fabric is a brocade fabric, use
1142  *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
1143  *         or above only.
1144  */
1145
1146 u16
1147 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
1148 {
1149         wwn_t fab_nwwn;
1150         u8 *tmp;
1151         u16 oui;
1152
1153         fab_nwwn = fabric->lps->pr_nwwn;
1154
1155         tmp = (u8 *)&fab_nwwn;
1156         oui = (tmp[3] << 8) | tmp[4];
1157
1158         return oui;
1159 }
1160 /*
1161  *              Unsolicited frame receive handling.
1162  */
1163 void
1164 bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1165                        u16 len)
1166 {
1167         u32     pid = fchs->d_id;
1168         struct bfa_fcs_vport_s *vport;
1169         struct list_head              *qe;
1170         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1171         struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
1172
1173         bfa_trc(fabric->fcs, len);
1174         bfa_trc(fabric->fcs, pid);
1175
1176         /*
1177          * Look for our own FLOGI frames being looped back. This means an
1178          * external loopback cable is in place. Our own FLOGI frames are
1179          * sometimes looped back when switch port gets temporarily bypassed.
1180          */
1181         if ((pid == bfa_ntoh3b(FC_FABRIC_PORT)) &&
1182             (els_cmd->els_code == FC_ELS_FLOGI) &&
1183             (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
1184                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
1185                 return;
1186         }
1187
1188         /*
1189          * FLOGI/EVFP exchanges should be consumed by base fabric.
1190          */
1191         if (fchs->d_id == bfa_hton3b(FC_FABRIC_PORT)) {
1192                 bfa_trc(fabric->fcs, pid);
1193                 bfa_fcs_fabric_process_uf(fabric, fchs, len);
1194                 return;
1195         }
1196
1197         if (fabric->bport.pid == pid) {
1198                 /*
1199                  * All authentication frames should be routed to auth
1200                  */
1201                 bfa_trc(fabric->fcs, els_cmd->els_code);
1202                 if (els_cmd->els_code == FC_ELS_AUTH) {
1203                         bfa_trc(fabric->fcs, els_cmd->els_code);
1204                         return;
1205                 }
1206
1207                 bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
1208                 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1209                 return;
1210         }
1211
1212         /*
1213          * look for a matching local port ID
1214          */
1215         list_for_each(qe, &fabric->vport_q) {
1216                 vport = (struct bfa_fcs_vport_s *) qe;
1217                 if (vport->lport.pid == pid) {
1218                         bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
1219                         return;
1220                 }
1221         }
1222         bfa_trc(fabric->fcs, els_cmd->els_code);
1223         bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1224 }
1225
1226 /*
1227  *              Unsolicited frames to be processed by fabric.
1228  */
1229 static void
1230 bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1231                           u16 len)
1232 {
1233         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1234
1235         bfa_trc(fabric->fcs, els_cmd->els_code);
1236
1237         switch (els_cmd->els_code) {
1238         case FC_ELS_FLOGI:
1239                 bfa_fcs_fabric_process_flogi(fabric, fchs, len);
1240                 break;
1241
1242         default:
1243                 /*
1244                  * need to generate a LS_RJT
1245                  */
1246                 break;
1247         }
1248 }
1249
1250 /*
1251  *      Process incoming FLOGI
1252  */
1253 static void
1254 bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
1255                         struct fchs_s *fchs, u16 len)
1256 {
1257         struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
1258         struct bfa_fcs_lport_s *bport = &fabric->bport;
1259
1260         bfa_trc(fabric->fcs, fchs->s_id);
1261
1262         fabric->stats.flogi_rcvd++;
1263         /*
1264          * Check port type. It should be 0 = n-port.
1265          */
1266         if (flogi->csp.port_type) {
1267                 /*
1268                  * @todo: may need to send a LS_RJT
1269                  */
1270                 bfa_trc(fabric->fcs, flogi->port_name);
1271                 fabric->stats.flogi_rejected++;
1272                 return;
1273         }
1274
1275         fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
1276         fabric->lps->pr_bbscn = (be16_to_cpu(flogi->csp.rxsz) >> 12);
1277         bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
1278         bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
1279
1280         /*
1281          * Send a Flogi Acc
1282          */
1283         bfa_fcs_fabric_send_flogi_acc(fabric);
1284         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
1285 }
1286
1287 static void
1288 bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
1289 {
1290         struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
1291         struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
1292         struct bfa_s      *bfa = fabric->fcs->bfa;
1293         struct bfa_fcxp_s *fcxp;
1294         u16     reqlen;
1295         struct fchs_s   fchs;
1296
1297         fcxp = bfa_fcs_fcxp_alloc(fabric->fcs);
1298         /*
1299          * Do not expect this failure -- expect remote node to retry
1300          */
1301         if (!fcxp)
1302                 return;
1303
1304         reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
1305                                     bfa_hton3b(FC_FABRIC_PORT),
1306                                     n2n_port->reply_oxid, pcfg->pwwn,
1307                                     pcfg->nwwn,
1308                                     bfa_fcport_get_maxfrsize(bfa),
1309                                     bfa_fcport_get_rx_bbcredit(bfa),
1310                                     bfa_fcs_fabric_oper_bbscn(fabric));
1311
1312         bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
1313                       BFA_FALSE, FC_CLASS_3,
1314                       reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
1315                       FC_MAX_PDUSZ, 0);
1316 }
1317
1318 /*
1319  *   Flogi Acc completion callback.
1320  */
1321 static void
1322 bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
1323                              bfa_status_t status, u32 rsp_len,
1324                              u32 resid_len, struct fchs_s *rspfchs)
1325 {
1326         struct bfa_fcs_fabric_s *fabric = cbarg;
1327
1328         bfa_trc(fabric->fcs, status);
1329 }
1330
1331
1332 /*
1333  * Send AEN notification
1334  */
1335 static void
1336 bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s *port,
1337                         enum bfa_port_aen_event event)
1338 {
1339         struct bfad_s *bfad = (struct bfad_s *)port->fabric->fcs->bfad;
1340         struct bfa_aen_entry_s  *aen_entry;
1341
1342         bfad_get_aen_entry(bfad, aen_entry);
1343         if (!aen_entry)
1344                 return;
1345
1346         aen_entry->aen_data.port.pwwn = bfa_fcs_lport_get_pwwn(port);
1347         aen_entry->aen_data.port.fwwn = bfa_fcs_lport_get_fabric_name(port);
1348
1349         /* Send the AEN notification */
1350         bfad_im_post_vendor_event(aen_entry, bfad, ++port->fcs->fcs_aen_seq,
1351                                   BFA_AEN_CAT_PORT, event);
1352 }
1353
1354 /*
1355  *
1356  * @param[in] fabric - fabric
1357  * @param[in] wwn_t - new fabric name
1358  *
1359  * @return - none
1360  */
1361 void
1362 bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
1363                                wwn_t fabric_name)
1364 {
1365         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
1366         char    pwwn_ptr[BFA_STRING_32];
1367         char    fwwn_ptr[BFA_STRING_32];
1368
1369         bfa_trc(fabric->fcs, fabric_name);
1370
1371         if (fabric->fabric_name == 0) {
1372                 /*
1373                  * With BRCD switches, we don't get Fabric Name in FLOGI.
1374                  * Don't generate a fabric name change event in this case.
1375                  */
1376                 fabric->fabric_name = fabric_name;
1377         } else {
1378                 fabric->fabric_name = fabric_name;
1379                 wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
1380                 wwn2str(fwwn_ptr,
1381                         bfa_fcs_lport_get_fabric_name(&fabric->bport));
1382                 BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
1383                         "Base port WWN = %s Fabric WWN = %s\n",
1384                         pwwn_ptr, fwwn_ptr);
1385                 bfa_fcs_fabric_aen_post(&fabric->bport,
1386                                 BFA_PORT_AEN_FABRIC_NAME_CHANGE);
1387         }
1388 }
1389
1390 /*
1391  *      Returns FCS vf structure for a given vf_id.
1392  *
1393  *      param[in]       vf_id - VF_ID
1394  *
1395  *      return
1396  *      If lookup succeeds, retuns fcs vf object, otherwise returns NULL
1397  */
1398 bfa_fcs_vf_t   *
1399 bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
1400 {
1401         bfa_trc(fcs, vf_id);
1402         if (vf_id == FC_VF_ID_NULL)
1403                 return &fcs->fabric;
1404
1405         return NULL;
1406 }
1407
1408 /*
1409  *      Return the list of local logical ports present in the given VF.
1410  *
1411  *      @param[in]      vf      vf for which logical ports are returned
1412  *      @param[out]     lpwwn   returned logical port wwn list
1413  *      @param[in,out]  nlports in:size of lpwwn list;
1414  *                              out:total elements present,
1415  *                              actual elements returned is limited by the size
1416  */
1417 void
1418 bfa_fcs_vf_get_ports(bfa_fcs_vf_t *vf, wwn_t lpwwn[], int *nlports)
1419 {
1420         struct list_head *qe;
1421         struct bfa_fcs_vport_s *vport;
1422         int     i = 0;
1423         struct bfa_fcs_s        *fcs;
1424
1425         if (vf == NULL || lpwwn == NULL || *nlports == 0)
1426                 return;
1427
1428         fcs = vf->fcs;
1429
1430         bfa_trc(fcs, vf->vf_id);
1431         bfa_trc(fcs, (uint32_t) *nlports);
1432
1433         lpwwn[i++] = vf->bport.port_cfg.pwwn;
1434
1435         list_for_each(qe, &vf->vport_q) {
1436                 if (i >= *nlports)
1437                         break;
1438
1439                 vport = (struct bfa_fcs_vport_s *) qe;
1440                 lpwwn[i++] = vport->lport.port_cfg.pwwn;
1441         }
1442
1443         bfa_trc(fcs, i);
1444         *nlports = i;
1445 }
1446
1447 /*
1448  * BFA FCS PPORT ( physical port)
1449  */
1450 static void
1451 bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
1452 {
1453         struct bfa_fcs_s      *fcs = cbarg;
1454
1455         bfa_trc(fcs, event);
1456
1457         switch (event) {
1458         case BFA_PORT_LINKUP:
1459                 bfa_fcs_fabric_link_up(&fcs->fabric);
1460                 break;
1461
1462         case BFA_PORT_LINKDOWN:
1463                 bfa_fcs_fabric_link_down(&fcs->fabric);
1464                 break;
1465
1466         default:
1467                 WARN_ON(1);
1468         }
1469 }
1470
1471 void
1472 bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
1473 {
1474         bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
1475 }
1476
1477 /*
1478  * BFA FCS UF ( Unsolicited Frames)
1479  */
1480
1481 /*
1482  *              BFA callback for unsolicited frame receive handler.
1483  *
1484  * @param[in]           cbarg           callback arg for receive handler
1485  * @param[in]           uf              unsolicited frame descriptor
1486  *
1487  * @return None
1488  */
1489 static void
1490 bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
1491 {
1492         struct bfa_fcs_s        *fcs = (struct bfa_fcs_s *) cbarg;
1493         struct fchs_s   *fchs = bfa_uf_get_frmbuf(uf);
1494         u16     len = bfa_uf_get_frmlen(uf);
1495         struct fc_vft_s *vft;
1496         struct bfa_fcs_fabric_s *fabric;
1497
1498         /*
1499          * check for VFT header
1500          */
1501         if (fchs->routing == FC_RTG_EXT_HDR &&
1502             fchs->cat_info == FC_CAT_VFT_HDR) {
1503                 bfa_stats(fcs, uf.tagged);
1504                 vft = bfa_uf_get_frmbuf(uf);
1505                 if (fcs->port_vfid == vft->vf_id)
1506                         fabric = &fcs->fabric;
1507                 else
1508                         fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
1509
1510                 /*
1511                  * drop frame if vfid is unknown
1512                  */
1513                 if (!fabric) {
1514                         WARN_ON(1);
1515                         bfa_stats(fcs, uf.vfid_unknown);
1516                         bfa_uf_free(uf);
1517                         return;
1518                 }
1519
1520                 /*
1521                  * skip vft header
1522                  */
1523                 fchs = (struct fchs_s *) (vft + 1);
1524                 len -= sizeof(struct fc_vft_s);
1525
1526                 bfa_trc(fcs, vft->vf_id);
1527         } else {
1528                 bfa_stats(fcs, uf.untagged);
1529                 fabric = &fcs->fabric;
1530         }
1531
1532         bfa_trc(fcs, ((u32 *) fchs)[0]);
1533         bfa_trc(fcs, ((u32 *) fchs)[1]);
1534         bfa_trc(fcs, ((u32 *) fchs)[2]);
1535         bfa_trc(fcs, ((u32 *) fchs)[3]);
1536         bfa_trc(fcs, ((u32 *) fchs)[4]);
1537         bfa_trc(fcs, ((u32 *) fchs)[5]);
1538         bfa_trc(fcs, len);
1539
1540         bfa_fcs_fabric_uf_recv(fabric, fchs, len);
1541         bfa_uf_free(uf);
1542 }
1543
1544 void
1545 bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
1546 {
1547         bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
1548 }