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