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 "bfa_fcs.h"
  23 #include "bfa_fcbuild.h"
  24 #include "bfad_drv.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_attach_fcs(bfa);
  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, npbc_vports;
  96         struct bfa_fcs_mod_s  *mod;
  97         struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
  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         /* Initialize pbc vports */
 105         if (!fcs->min_cfg) {
 106                 npbc_vports =
 107                     bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
 108                 for (i = 0; i < npbc_vports; i++)
 109                         bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
 110         }
 111 }
 112
 113 /*
 114  * Start FCS operations.
 115  */
 116 void
 117 bfa_fcs_start(struct bfa_fcs_s *fcs)
 118 {
 119         bfa_fcs_fabric_modstart(fcs);
 120 }
 121
 122 /*
 123  *      brief
 124  *              FCS driver details initialization.
 125  *
 126  *      param[in]               fcs             FCS instance
 127  *      param[in]               driver_info     Driver Details
 128  *
 129  *      return None
 130  */
 131 void
 132 bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
 133                         struct bfa_fcs_driver_info_s *driver_info)
 134 {
 135
 136         fcs->driver_info = *driver_info;
 137
 138         bfa_fcs_fabric_psymb_init(&fcs->fabric);
 139 }
 140
 141 /*
 142  *      brief
 143  *              FCS FDMI Driver Parameter Initialization
 144  *
 145  *      param[in]               fcs             FCS instance
 146  *      param[in]               fdmi_enable     TRUE/FALSE
 147  *
 148  *      return None
 149  */
 150 void
 151 bfa_fcs_set_fdmi_param(struct bfa_fcs_s *fcs, bfa_boolean_t fdmi_enable)
 152 {
 153
 154         fcs->fdmi_enabled = fdmi_enable;
 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 void
 188 bfa_fcs_trc_init(struct bfa_fcs_s *fcs, struct bfa_trc_mod_s *trcmod)
 189 {
 190         fcs->trcmod = trcmod;
 191 }
 192
 193 void
 194 bfa_fcs_modexit_comp(struct bfa_fcs_s *fcs)
 195 {
 196         bfa_wc_down(&fcs->wc);
 197 }
 198
 199 /*
 200  * Fabric module implementation.
 201  */
 202
 203 #define BFA_FCS_FABRIC_RETRY_DELAY      (2000)  /* Milliseconds */
 204 #define BFA_FCS_FABRIC_CLEANUP_DELAY    (10000) /* Milliseconds */
 205
 206 #define bfa_fcs_fabric_set_opertype(__fabric) do {                      \
 207                 if (bfa_fcport_get_topology((__fabric)->fcs->bfa)       \
 208                     == BFA_PORT_TOPOLOGY_P2P)                           \
 209                         (__fabric)->oper_type = BFA_PORT_TYPE_NPORT;    \
 210                 else                                                    \
 211                         (__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;   \
 212 } while (0)
 213
 214 /*
 215  * forward declarations
 216  */
 217 static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
 218 static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
 219 static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
 220 static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
 221 static void bfa_fcs_fabric_delay(void *cbarg);
 222 static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
 223 static void bfa_fcs_fabric_delete_comp(void *cbarg);
 224 static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
 225                                       struct fchs_s *fchs, u16 len);
 226 static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
 227                                          struct fchs_s *fchs, u16 len);
 228 static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
 229 static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
 230                                          struct bfa_fcxp_s *fcxp, void *cbarg,
 231                                          bfa_status_t status,
 232                                          u32 rsp_len,
 233                                          u32 resid_len,
 234                                          struct fchs_s *rspfchs);
 235 /*
 236  *  fcs_fabric_sm fabric state machine functions
 237  */
 238
 239 /*
 240  * Fabric state machine events
 241  */
 242 enum bfa_fcs_fabric_event {
 243         BFA_FCS_FABRIC_SM_CREATE        = 1,    /*  create from driver        */
 244         BFA_FCS_FABRIC_SM_DELETE        = 2,    /*  delete from driver        */
 245         BFA_FCS_FABRIC_SM_LINK_DOWN     = 3,    /*  link down from port      */
 246         BFA_FCS_FABRIC_SM_LINK_UP       = 4,    /*  link up from port         */
 247         BFA_FCS_FABRIC_SM_CONT_OP       = 5,    /*  flogi/auth continue op   */
 248         BFA_FCS_FABRIC_SM_RETRY_OP      = 6,    /*  flogi/auth retry op      */
 249         BFA_FCS_FABRIC_SM_NO_FABRIC     = 7,    /*  from flogi/auth           */
 250         BFA_FCS_FABRIC_SM_PERF_EVFP     = 8,    /*  from flogi/auth           */
 251         BFA_FCS_FABRIC_SM_ISOLATE       = 9,    /*  from EVFP processing     */
 252         BFA_FCS_FABRIC_SM_NO_TAGGING    = 10,   /*  no VFT tagging from EVFP */
 253         BFA_FCS_FABRIC_SM_DELAYED       = 11,   /*  timeout delay event      */
 254         BFA_FCS_FABRIC_SM_AUTH_FAILED   = 12,   /*  auth failed       */
 255         BFA_FCS_FABRIC_SM_AUTH_SUCCESS  = 13,   /*  auth successful           */
 256         BFA_FCS_FABRIC_SM_DELCOMP       = 14,   /*  all vports deleted event */
 257         BFA_FCS_FABRIC_SM_LOOPBACK      = 15,   /*  Received our own FLOGI   */
 258         BFA_FCS_FABRIC_SM_START         = 16,   /*  from driver       */
 259 };
 260
 261 static void     bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
 262                                          enum bfa_fcs_fabric_event event);
 263 static void     bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 264                                           enum bfa_fcs_fabric_event event);
 265 static void     bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
 266                                            enum bfa_fcs_fabric_event event);
 267 static void     bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
 268                                         enum bfa_fcs_fabric_event event);
 269 static void     bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
 270                                               enum bfa_fcs_fabric_event event);
 271 static void     bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
 272                                        enum bfa_fcs_fabric_event event);
 273 static void     bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
 274                                               enum bfa_fcs_fabric_event event);
 275 static void     bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
 276                                            enum bfa_fcs_fabric_event event);
 277 static void     bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
 278                                            enum bfa_fcs_fabric_event event);
 279 static void     bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
 280                                          enum bfa_fcs_fabric_event event);
 281 static void     bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
 282                                        enum bfa_fcs_fabric_event event);
 283 static void     bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
 284                                             enum bfa_fcs_fabric_event event);
 285 static void     bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
 286                                            enum bfa_fcs_fabric_event event);
 287 static void     bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
 288                                            enum bfa_fcs_fabric_event event);
 289 /*
 290  *   Beginning state before fabric creation.
 291  */
 292 static void
 293 bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
 294                          enum bfa_fcs_fabric_event event)
 295 {
 296         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 297         bfa_trc(fabric->fcs, event);
 298
 299         switch (event) {
 300         case BFA_FCS_FABRIC_SM_CREATE:
 301                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
 302                 bfa_fcs_fabric_init(fabric);
 303                 bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
 304                 break;
 305
 306         case BFA_FCS_FABRIC_SM_LINK_UP:
 307         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 308                 break;
 309
 310         default:
 311                 bfa_sm_fault(fabric->fcs, event);
 312         }
 313 }
 314
 315 /*
 316  *   Beginning state before fabric creation.
 317  */
 318 static void
 319 bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
 320                           enum bfa_fcs_fabric_event event)
 321 {
 322         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 323         bfa_trc(fabric->fcs, event);
 324
 325         switch (event) {
 326         case BFA_FCS_FABRIC_SM_START:
 327                 if (bfa_fcport_is_linkup(fabric->fcs->bfa)) {
 328                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 329                         bfa_fcs_fabric_login(fabric);
 330                 } else
 331                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 332                 break;
 333
 334         case BFA_FCS_FABRIC_SM_LINK_UP:
 335         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 336                 break;
 337
 338         case BFA_FCS_FABRIC_SM_DELETE:
 339                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
 340                 bfa_fcs_modexit_comp(fabric->fcs);
 341                 break;
 342
 343         default:
 344                 bfa_sm_fault(fabric->fcs, event);
 345         }
 346 }
 347
 348 /*
 349  *   Link is down, awaiting LINK UP event from port. This is also the
 350  *   first state at fabric creation.
 351  */
 352 static void
 353 bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
 354                            enum bfa_fcs_fabric_event event)
 355 {
 356         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 357         bfa_trc(fabric->fcs, event);
 358
 359         switch (event) {
 360         case BFA_FCS_FABRIC_SM_LINK_UP:
 361                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 362                 bfa_fcs_fabric_login(fabric);
 363                 break;
 364
 365         case BFA_FCS_FABRIC_SM_RETRY_OP:
 366                 break;
 367
 368         case BFA_FCS_FABRIC_SM_DELETE:
 369                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 370                 bfa_fcs_fabric_delete(fabric);
 371                 break;
 372
 373         default:
 374                 bfa_sm_fault(fabric->fcs, event);
 375         }
 376 }
 377
 378 /*
 379  *   FLOGI is in progress, awaiting FLOGI reply.
 380  */
 381 static void
 382 bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
 383                         enum bfa_fcs_fabric_event event)
 384 {
 385         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 386         bfa_trc(fabric->fcs, event);
 387
 388         switch (event) {
 389         case BFA_FCS_FABRIC_SM_CONT_OP:
 390
 391                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 392                                            fabric->bb_credit);
 393                 fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
 394
 395                 if (fabric->auth_reqd && fabric->is_auth) {
 396                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
 397                         bfa_trc(fabric->fcs, event);
 398                 } else {
 399                         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 400                         bfa_fcs_fabric_notify_online(fabric);
 401                 }
 402                 break;
 403
 404         case BFA_FCS_FABRIC_SM_RETRY_OP:
 405                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
 406                 bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
 407                                 bfa_fcs_fabric_delay, fabric,
 408                                 BFA_FCS_FABRIC_RETRY_DELAY);
 409                 break;
 410
 411         case BFA_FCS_FABRIC_SM_LOOPBACK:
 412                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
 413                 bfa_lps_discard(fabric->lps);
 414                 bfa_fcs_fabric_set_opertype(fabric);
 415                 break;
 416
 417         case BFA_FCS_FABRIC_SM_NO_FABRIC:
 418                 fabric->fab_type = BFA_FCS_FABRIC_N2N;
 419                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 420                                            fabric->bb_credit);
 421                 bfa_fcs_fabric_notify_online(fabric);
 422                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
 423                 break;
 424
 425         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 426                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 427                 bfa_lps_discard(fabric->lps);
 428                 break;
 429
 430         case BFA_FCS_FABRIC_SM_DELETE:
 431                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 432                 bfa_lps_discard(fabric->lps);
 433                 bfa_fcs_fabric_delete(fabric);
 434                 break;
 435
 436         default:
 437                 bfa_sm_fault(fabric->fcs, event);
 438         }
 439 }
 440
 441
 442 static void
 443 bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
 444                               enum bfa_fcs_fabric_event event)
 445 {
 446         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 447         bfa_trc(fabric->fcs, event);
 448
 449         switch (event) {
 450         case BFA_FCS_FABRIC_SM_DELAYED:
 451                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
 452                 bfa_fcs_fabric_login(fabric);
 453                 break;
 454
 455         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 456                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 457                 bfa_timer_stop(&fabric->delay_timer);
 458                 break;
 459
 460         case BFA_FCS_FABRIC_SM_DELETE:
 461                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 462                 bfa_timer_stop(&fabric->delay_timer);
 463                 bfa_fcs_fabric_delete(fabric);
 464                 break;
 465
 466         default:
 467                 bfa_sm_fault(fabric->fcs, event);
 468         }
 469 }
 470
 471 /*
 472  *   Authentication is in progress, awaiting authentication results.
 473  */
 474 static void
 475 bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
 476                        enum bfa_fcs_fabric_event event)
 477 {
 478         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 479         bfa_trc(fabric->fcs, event);
 480
 481         switch (event) {
 482         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
 483                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
 484                 bfa_lps_discard(fabric->lps);
 485                 break;
 486
 487         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
 488                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
 489                 bfa_fcs_fabric_notify_online(fabric);
 490                 break;
 491
 492         case BFA_FCS_FABRIC_SM_PERF_EVFP:
 493                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
 494                 break;
 495
 496         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 497                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 498                 bfa_lps_discard(fabric->lps);
 499                 break;
 500
 501         case BFA_FCS_FABRIC_SM_DELETE:
 502                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 503                 bfa_fcs_fabric_delete(fabric);
 504                 break;
 505
 506         default:
 507                 bfa_sm_fault(fabric->fcs, event);
 508         }
 509 }
 510
 511 /*
 512  *   Authentication failed
 513  */
 514 static void
 515 bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
 516                               enum bfa_fcs_fabric_event event)
 517 {
 518         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 519         bfa_trc(fabric->fcs, event);
 520
 521         switch (event) {
 522         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 523                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 524                 bfa_fcs_fabric_notify_offline(fabric);
 525                 break;
 526
 527         case BFA_FCS_FABRIC_SM_DELETE:
 528                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 529                 bfa_fcs_fabric_delete(fabric);
 530                 break;
 531
 532         default:
 533                 bfa_sm_fault(fabric->fcs, event);
 534         }
 535 }
 536
 537 /*
 538  *   Port is in loopback mode.
 539  */
 540 static void
 541 bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
 542                            enum bfa_fcs_fabric_event event)
 543 {
 544         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 545         bfa_trc(fabric->fcs, event);
 546
 547         switch (event) {
 548         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 549                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 550                 bfa_fcs_fabric_notify_offline(fabric);
 551                 break;
 552
 553         case BFA_FCS_FABRIC_SM_DELETE:
 554                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 555                 bfa_fcs_fabric_delete(fabric);
 556                 break;
 557
 558         default:
 559                 bfa_sm_fault(fabric->fcs, event);
 560         }
 561 }
 562
 563 /*
 564  *   There is no attached fabric - private loop or NPort-to-NPort topology.
 565  */
 566 static void
 567 bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
 568                            enum bfa_fcs_fabric_event event)
 569 {
 570         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 571         bfa_trc(fabric->fcs, event);
 572
 573         switch (event) {
 574         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 575                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 576                 bfa_lps_discard(fabric->lps);
 577                 bfa_fcs_fabric_notify_offline(fabric);
 578                 break;
 579
 580         case BFA_FCS_FABRIC_SM_DELETE:
 581                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 582                 bfa_fcs_fabric_delete(fabric);
 583                 break;
 584
 585         case BFA_FCS_FABRIC_SM_NO_FABRIC:
 586                 bfa_trc(fabric->fcs, fabric->bb_credit);
 587                 bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
 588                                            fabric->bb_credit);
 589                 break;
 590
 591         default:
 592                 bfa_sm_fault(fabric->fcs, event);
 593         }
 594 }
 595
 596 /*
 597  *   Fabric is online - normal operating state.
 598  */
 599 static void
 600 bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
 601                          enum bfa_fcs_fabric_event event)
 602 {
 603         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 604         bfa_trc(fabric->fcs, event);
 605
 606         switch (event) {
 607         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 608                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
 609                 bfa_lps_discard(fabric->lps);
 610                 bfa_fcs_fabric_notify_offline(fabric);
 611                 break;
 612
 613         case BFA_FCS_FABRIC_SM_DELETE:
 614                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
 615                 bfa_fcs_fabric_delete(fabric);
 616                 break;
 617
 618         case BFA_FCS_FABRIC_SM_AUTH_FAILED:
 619                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
 620                 bfa_lps_discard(fabric->lps);
 621                 break;
 622
 623         case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
 624                 break;
 625
 626         default:
 627                 bfa_sm_fault(fabric->fcs, event);
 628         }
 629 }
 630
 631 /*
 632  *   Exchanging virtual fabric parameters.
 633  */
 634 static void
 635 bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
 636                        enum bfa_fcs_fabric_event event)
 637 {
 638         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 639         bfa_trc(fabric->fcs, event);
 640
 641         switch (event) {
 642         case BFA_FCS_FABRIC_SM_CONT_OP:
 643                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
 644                 break;
 645
 646         case BFA_FCS_FABRIC_SM_ISOLATE:
 647                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
 648                 break;
 649
 650         default:
 651                 bfa_sm_fault(fabric->fcs, event);
 652         }
 653 }
 654
 655 /*
 656  *   EVFP exchange complete and VFT tagging is enabled.
 657  */
 658 static void
 659 bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
 660                             enum bfa_fcs_fabric_event event)
 661 {
 662         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 663         bfa_trc(fabric->fcs, event);
 664 }
 665
 666 /*
 667  *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
 668  */
 669 static void
 670 bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
 671                            enum bfa_fcs_fabric_event event)
 672 {
 673         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
 674         char    pwwn_ptr[BFA_STRING_32];
 675
 676         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 677         bfa_trc(fabric->fcs, event);
 678         wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
 679
 680         BFA_LOG(KERN_INFO, bfad, log_level,
 681                 "Port is isolated due to VF_ID mismatch. "
 682                 "PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
 683                 pwwn_ptr, fabric->fcs->port_vfid,
 684                 fabric->event_arg.swp_vfid);
 685 }
 686
 687 /*
 688  *   Fabric is being deleted, awaiting vport delete completions.
 689  */
 690 static void
 691 bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
 692                            enum bfa_fcs_fabric_event event)
 693 {
 694         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 695         bfa_trc(fabric->fcs, event);
 696
 697         switch (event) {
 698         case BFA_FCS_FABRIC_SM_DELCOMP:
 699                 bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
 700                 bfa_fcs_modexit_comp(fabric->fcs);
 701                 break;
 702
 703         case BFA_FCS_FABRIC_SM_LINK_UP:
 704                 break;
 705
 706         case BFA_FCS_FABRIC_SM_LINK_DOWN:
 707                 bfa_fcs_fabric_notify_offline(fabric);
 708                 break;
 709
 710         default:
 711                 bfa_sm_fault(fabric->fcs, event);
 712         }
 713 }
 714
 715
 716
 717 /*
 718  *  fcs_fabric_private fabric private functions
 719  */
 720
 721 static void
 722 bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
 723 {
 724         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 725
 726         port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
 727         port_cfg->nwwn = bfa_ioc_get_nwwn(&fabric->fcs->bfa->ioc);
 728         port_cfg->pwwn = bfa_ioc_get_pwwn(&fabric->fcs->bfa->ioc);
 729 }
 730
 731 /*
 732  * Port Symbolic Name Creation for base port.
 733  */
 734 void
 735 bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
 736 {
 737         struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
 738         char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
 739         struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
 740
 741         bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
 742
 743         /* Model name/number */
 744         strncpy((char *)&port_cfg->sym_name, model,
 745                 BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
 746         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 747                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 748
 749         /* Driver Version */
 750         strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
 751                 BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
 752         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 753                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 754
 755         /* Host machine name */
 756         strncat((char *)&port_cfg->sym_name,
 757                 (char *)driver_info->host_machine_name,
 758                 BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
 759         strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 760                 sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 761
 762         /*
 763          * Host OS Info :
 764          * If OS Patch Info is not there, do not truncate any bytes from the
 765          * OS name string and instead copy the entire OS info string (64 bytes).
 766          */
 767         if (driver_info->host_os_patch[0] == '\0') {
 768                 strncat((char *)&port_cfg->sym_name,
 769                         (char *)driver_info->host_os_name,
 770                         BFA_FCS_OS_STR_LEN);
 771                 strncat((char *)&port_cfg->sym_name,
 772                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 773                         sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 774         } else {
 775                 strncat((char *)&port_cfg->sym_name,
 776                         (char *)driver_info->host_os_name,
 777                         BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
 778                 strncat((char *)&port_cfg->sym_name,
 779                         BFA_FCS_PORT_SYMBNAME_SEPARATOR,
 780                         sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
 781
 782                 /* Append host OS Patch Info */
 783                 strncat((char *)&port_cfg->sym_name,
 784                         (char *)driver_info->host_os_patch,
 785                         BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
 786         }
 787
 788         /* null terminate */
 789         port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
 790 }
 791
 792 /*
 793  * bfa lps login completion callback
 794  */
 795 void
 796 bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
 797 {
 798         struct bfa_fcs_fabric_s *fabric = uarg;
 799
 800         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
 801         bfa_trc(fabric->fcs, status);
 802
 803         switch (status) {
 804         case BFA_STATUS_OK:
 805                 fabric->stats.flogi_accepts++;
 806                 break;
 807
 808         case BFA_STATUS_INVALID_MAC:
 809                 /* Only for CNA */
 810                 fabric->stats.flogi_acc_err++;
 811                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 812
 813                 return;
 814
 815         case BFA_STATUS_EPROTOCOL:
 816                 switch (bfa_lps_get_extstatus(fabric->lps)) {
 817                 case BFA_EPROTO_BAD_ACCEPT:
 818                         fabric->stats.flogi_acc_err++;
 819                         break;
 820
 821                 case BFA_EPROTO_UNKNOWN_RSP:
 822                         fabric->stats.flogi_unknown_rsp++;
 823                         break;
 824
 825                 default:
 826                         break;
 827                 }
 828                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 829
 830                 return;
 831
 832         case BFA_STATUS_FABRIC_RJT:
 833                 fabric->stats.flogi_rejects++;
 834                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 835                 return;
 836
 837         default:
 838                 fabric->stats.flogi_rsp_err++;
 839                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
 840                 return;
 841         }
 842
 843         fabric->bb_credit = bfa_lps_get_peer_bbcredit(fabric->lps);
 844         bfa_trc(fabric->fcs, fabric->bb_credit);
 845
 846         if (!bfa_lps_is_brcd_fabric(fabric->lps))
 847                 fabric->fabric_name =  bfa_lps_get_peer_nwwn(fabric->lps);
 848
 849         /*
 850          * Check port type. It should be 1 = F-port.
 851          */
 852         if (bfa_lps_is_fport(fabric->lps)) {
 853                 fabric->bport.pid = bfa_lps_get_pid(fabric->lps);
 854                 fabric->is_npiv = bfa_lps_is_npiv_en(fabric->lps);
 855                 fabric->is_auth = bfa_lps_is_authreq(fabric->lps);
 856                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
 857         } else {
 858                 /*
 859                  * Nport-2-Nport direct attached
 860                  */
 861                 fabric->bport.port_topo.pn2n.rem_port_wwn =
 862                         bfa_lps_get_peer_pwwn(fabric->lps);
 863                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
 864         }
 865
 866         bfa_trc(fabric->fcs, fabric->bport.pid);
 867         bfa_trc(fabric->fcs, fabric->is_npiv);
 868         bfa_trc(fabric->fcs, fabric->is_auth);
 869 }
 870 /*
 871  *              Allocate and send FLOGI.
 872  */
 873 static void
 874 bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
 875 {
 876         struct bfa_s            *bfa = fabric->fcs->bfa;
 877         struct bfa_lport_cfg_s  *pcfg = &fabric->bport.port_cfg;
 878         u8                      alpa = 0;
 879
 880         if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
 881                 alpa = bfa_fcport_get_myalpa(bfa);
 882
 883         bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
 884                       pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
 885
 886         fabric->stats.flogi_sent++;
 887 }
 888
 889 static void
 890 bfa_fcs_fabric_notify_online(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
 897         bfa_fcs_fabric_set_opertype(fabric);
 898         fabric->stats.fabric_onlines++;
 899
 900         /*
 901          * notify online event to base and then virtual ports
 902          */
 903         bfa_fcs_lport_online(&fabric->bport);
 904
 905         list_for_each_safe(qe, qen, &fabric->vport_q) {
 906                 vport = (struct bfa_fcs_vport_s *) qe;
 907                 bfa_fcs_vport_online(vport);
 908         }
 909 }
 910
 911 static void
 912 bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
 913 {
 914         struct bfa_fcs_vport_s *vport;
 915         struct list_head              *qe, *qen;
 916
 917         bfa_trc(fabric->fcs, fabric->fabric_name);
 918         fabric->stats.fabric_offlines++;
 919
 920         /*
 921          * notify offline event first to vports and then base port.
 922          */
 923         list_for_each_safe(qe, qen, &fabric->vport_q) {
 924                 vport = (struct bfa_fcs_vport_s *) qe;
 925                 bfa_fcs_vport_offline(vport);
 926         }
 927
 928         bfa_fcs_lport_offline(&fabric->bport);
 929
 930         fabric->fabric_name = 0;
 931         fabric->fabric_ip_addr[0] = 0;
 932 }
 933
 934 static void
 935 bfa_fcs_fabric_delay(void *cbarg)
 936 {
 937         struct bfa_fcs_fabric_s *fabric = cbarg;
 938
 939         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
 940 }
 941
 942 /*
 943  * Delete all vports and wait for vport delete completions.
 944  */
 945 static void
 946 bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
 947 {
 948         struct bfa_fcs_vport_s *vport;
 949         struct list_head              *qe, *qen;
 950
 951         list_for_each_safe(qe, qen, &fabric->vport_q) {
 952                 vport = (struct bfa_fcs_vport_s *) qe;
 953                 bfa_fcs_vport_fcs_delete(vport);
 954         }
 955
 956         bfa_fcs_lport_delete(&fabric->bport);
 957         bfa_wc_wait(&fabric->wc);
 958 }
 959
 960 static void
 961 bfa_fcs_fabric_delete_comp(void *cbarg)
 962 {
 963         struct bfa_fcs_fabric_s *fabric = cbarg;
 964
 965         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
 966 }
 967
 968 /*
 969  *  fcs_fabric_public fabric public functions
 970  */
 971
 972 /*
 973  * Attach time initialization.
 974  */
 975 void
 976 bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
 977 {
 978         struct bfa_fcs_fabric_s *fabric;
 979
 980         fabric = &fcs->fabric;
 981         memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
 982
 983         /*
 984          * Initialize base fabric.
 985          */
 986         fabric->fcs = fcs;
 987         INIT_LIST_HEAD(&fabric->vport_q);
 988         INIT_LIST_HEAD(&fabric->vf_q);
 989         fabric->lps = bfa_lps_alloc(fcs->bfa);
 990         bfa_assert(fabric->lps);
 991
 992         /*
 993          * Initialize fabric delete completion handler. Fabric deletion is
 994          * complete when the last vport delete is complete.
 995          */
 996         bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
 997         bfa_wc_up(&fabric->wc); /* For the base port */
 998
 999         bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
1000         bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
1001 }
1002
1003 void
1004 bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
1005 {
1006         bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
1007         bfa_trc(fcs, 0);
1008 }
1009
1010 /*
1011  *   Module cleanup
1012  */
1013 void
1014 bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
1015 {
1016         struct bfa_fcs_fabric_s *fabric;
1017
1018         bfa_trc(fcs, 0);
1019
1020         /*
1021          * Cleanup base fabric.
1022          */
1023         fabric = &fcs->fabric;
1024         bfa_lps_delete(fabric->lps);
1025         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
1026 }
1027
1028 /*
1029  * Fabric module start -- kick starts FCS actions
1030  */
1031 void
1032 bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
1033 {
1034         struct bfa_fcs_fabric_s *fabric;
1035
1036         bfa_trc(fcs, 0);
1037         fabric = &fcs->fabric;
1038         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
1039 }
1040
1041 /*
1042  *   Suspend fabric activity as part of driver suspend.
1043  */
1044 void
1045 bfa_fcs_fabric_modsusp(struct bfa_fcs_s *fcs)
1046 {
1047 }
1048
1049 bfa_boolean_t
1050 bfa_fcs_fabric_is_loopback(struct bfa_fcs_fabric_s *fabric)
1051 {
1052         return bfa_sm_cmp_state(fabric, bfa_fcs_fabric_sm_loopback);
1053 }
1054
1055 bfa_boolean_t
1056 bfa_fcs_fabric_is_auth_failed(struct bfa_fcs_fabric_s *fabric)
1057 {
1058         return bfa_sm_cmp_state(fabric, bfa_fcs_fabric_sm_auth_failed);
1059 }
1060
1061 enum bfa_port_type
1062 bfa_fcs_fabric_port_type(struct bfa_fcs_fabric_s *fabric)
1063 {
1064         return fabric->oper_type;
1065 }
1066
1067 /*
1068  *   Link up notification from BFA physical port module.
1069  */
1070 void
1071 bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
1072 {
1073         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1074         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
1075 }
1076
1077 /*
1078  *   Link down notification from BFA physical port module.
1079  */
1080 void
1081 bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
1082 {
1083         bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
1084         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
1085 }
1086
1087 /*
1088  *   A child vport is being created in the fabric.
1089  *
1090  *   Call from vport module at vport creation. A list of base port and vports
1091  *   belonging to a fabric is maintained to propagate link events.
1092  *
1093  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1094  *   param[in] vport  - Vport being created.
1095  *
1096  *   @return None (always succeeds)
1097  */
1098 void
1099 bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
1100                         struct bfa_fcs_vport_s *vport)
1101 {
1102         /*
1103          * - add vport to fabric's vport_q
1104          */
1105         bfa_trc(fabric->fcs, fabric->vf_id);
1106
1107         list_add_tail(&vport->qe, &fabric->vport_q);
1108         fabric->num_vports++;
1109         bfa_wc_up(&fabric->wc);
1110 }
1111
1112 /*
1113  *   A child vport is being deleted from fabric.
1114  *
1115  *   Vport is being deleted.
1116  */
1117 void
1118 bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
1119                         struct bfa_fcs_vport_s *vport)
1120 {
1121         list_del(&vport->qe);
1122         fabric->num_vports--;
1123         bfa_wc_down(&fabric->wc);
1124 }
1125
1126 /*
1127  *   Base port is deleted.
1128  */
1129 void
1130 bfa_fcs_fabric_port_delete_comp(struct bfa_fcs_fabric_s *fabric)
1131 {
1132         bfa_wc_down(&fabric->wc);
1133 }
1134
1135
1136 /*
1137  *    Check if fabric is online.
1138  *
1139  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1140  *
1141  *   @return  TRUE/FALSE
1142  */
1143 int
1144 bfa_fcs_fabric_is_online(struct bfa_fcs_fabric_s *fabric)
1145 {
1146         return bfa_sm_cmp_state(fabric, bfa_fcs_fabric_sm_online);
1147 }
1148
1149 /*
1150  *      brief
1151  *
1152  */
1153 bfa_status_t
1154 bfa_fcs_fabric_addvf(struct bfa_fcs_fabric_s *vf, struct bfa_fcs_s *fcs,
1155                      struct bfa_lport_cfg_s *port_cfg, struct bfad_vf_s *vf_drv)
1156 {
1157         bfa_sm_set_state(vf, bfa_fcs_fabric_sm_uninit);
1158         return BFA_STATUS_OK;
1159 }
1160
1161 /*
1162  * Lookup for a vport withing a fabric given its pwwn
1163  */
1164 struct bfa_fcs_vport_s *
1165 bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
1166 {
1167         struct bfa_fcs_vport_s *vport;
1168         struct list_head              *qe;
1169
1170         list_for_each(qe, &fabric->vport_q) {
1171                 vport = (struct bfa_fcs_vport_s *) qe;
1172                 if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
1173                         return vport;
1174         }
1175
1176         return NULL;
1177 }
1178
1179 /*
1180  *    In a given fabric, return the number of lports.
1181  *
1182  *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
1183  *
1184  *   @return : 1 or more.
1185  */
1186 u16
1187 bfa_fcs_fabric_vport_count(struct bfa_fcs_fabric_s *fabric)
1188 {
1189         return fabric->num_vports;
1190 }
1191
1192 /*
1193  *  Get OUI of the attached switch.
1194  *
1195  *  Note : Use of this function should be avoided as much as possible.
1196  *         This function should be used only if there is any requirement
1197 *          to check for FOS version below 6.3.
1198  *         To check if the attached fabric is a brocade fabric, use
1199  *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
1200  *         or above only.
1201  */
1202
1203 u16
1204 bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
1205 {
1206         wwn_t fab_nwwn;
1207         u8 *tmp;
1208         u16 oui;
1209
1210         fab_nwwn = bfa_lps_get_peer_nwwn(fabric->lps);
1211
1212         tmp = (u8 *)&fab_nwwn;
1213         oui = (tmp[3] << 8) | tmp[4];
1214
1215         return oui;
1216 }
1217 /*
1218  *              Unsolicited frame receive handling.
1219  */
1220 void
1221 bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1222                        u16 len)
1223 {
1224         u32     pid = fchs->d_id;
1225         struct bfa_fcs_vport_s *vport;
1226         struct list_head              *qe;
1227         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1228         struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
1229
1230         bfa_trc(fabric->fcs, len);
1231         bfa_trc(fabric->fcs, pid);
1232
1233         /*
1234          * Look for our own FLOGI frames being looped back. This means an
1235          * external loopback cable is in place. Our own FLOGI frames are
1236          * sometimes looped back when switch port gets temporarily bypassed.
1237          */
1238         if ((pid == bfa_os_ntoh3b(FC_FABRIC_PORT)) &&
1239             (els_cmd->els_code == FC_ELS_FLOGI) &&
1240             (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
1241                 bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
1242                 return;
1243         }
1244
1245         /*
1246          * FLOGI/EVFP exchanges should be consumed by base fabric.
1247          */
1248         if (fchs->d_id == bfa_os_hton3b(FC_FABRIC_PORT)) {
1249                 bfa_trc(fabric->fcs, pid);
1250                 bfa_fcs_fabric_process_uf(fabric, fchs, len);
1251                 return;
1252         }
1253
1254         if (fabric->bport.pid == pid) {
1255                 /*
1256                  * All authentication frames should be routed to auth
1257                  */
1258                 bfa_trc(fabric->fcs, els_cmd->els_code);
1259                 if (els_cmd->els_code == FC_ELS_AUTH) {
1260                         bfa_trc(fabric->fcs, els_cmd->els_code);
1261                         return;
1262                 }
1263
1264                 bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
1265                 bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1266                 return;
1267         }
1268
1269         /*
1270          * look for a matching local port ID
1271          */
1272         list_for_each(qe, &fabric->vport_q) {
1273                 vport = (struct bfa_fcs_vport_s *) qe;
1274                 if (vport->lport.pid == pid) {
1275                         bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
1276                         return;
1277                 }
1278         }
1279         bfa_trc(fabric->fcs, els_cmd->els_code);
1280         bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
1281 }
1282
1283 /*
1284  *              Unsolicited frames to be processed by fabric.
1285  */
1286 static void
1287 bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
1288                           u16 len)
1289 {
1290         struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
1291
1292         bfa_trc(fabric->fcs, els_cmd->els_code);
1293
1294         switch (els_cmd->els_code) {
1295         case FC_ELS_FLOGI:
1296                 bfa_fcs_fabric_process_flogi(fabric, fchs, len);
1297                 break;
1298
1299         default:
1300                 /*
1301                  * need to generate a LS_RJT
1302                  */
1303                 break;
1304         }
1305 }
1306
1307 /*
1308  *      Process incoming FLOGI
1309  */
1310 static void
1311 bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
1312                         struct fchs_s *fchs, u16 len)
1313 {
1314         struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
1315         struct bfa_fcs_lport_s *bport = &fabric->bport;
1316
1317         bfa_trc(fabric->fcs, fchs->s_id);
1318
1319         fabric->stats.flogi_rcvd++;
1320         /*
1321          * Check port type. It should be 0 = n-port.
1322          */
1323         if (flogi->csp.port_type) {
1324                 /*
1325                  * @todo: may need to send a LS_RJT
1326                  */
1327                 bfa_trc(fabric->fcs, flogi->port_name);
1328                 fabric->stats.flogi_rejected++;
1329                 return;
1330         }
1331
1332         fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
1333         bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
1334         bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
1335
1336         /*
1337          * Send a Flogi Acc
1338          */
1339         bfa_fcs_fabric_send_flogi_acc(fabric);
1340         bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
1341 }
1342
1343 static void
1344 bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
1345 {
1346         struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
1347         struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
1348         struct bfa_s      *bfa = fabric->fcs->bfa;
1349         struct bfa_fcxp_s *fcxp;
1350         u16     reqlen;
1351         struct fchs_s   fchs;
1352
1353         fcxp = bfa_fcs_fcxp_alloc(fabric->fcs);
1354         /*
1355          * Do not expect this failure -- expect remote node to retry
1356          */
1357         if (!fcxp)
1358                 return;
1359
1360         reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
1361                                     bfa_os_hton3b(FC_FABRIC_PORT),
1362                                     n2n_port->reply_oxid, pcfg->pwwn,
1363                                     pcfg->nwwn,
1364                                     bfa_fcport_get_maxfrsize(bfa),
1365                                     bfa_fcport_get_rx_bbcredit(bfa));
1366
1367         bfa_fcxp_send(fcxp, NULL, fabric->vf_id, bfa_lps_get_tag(fabric->lps),
1368                       BFA_FALSE, FC_CLASS_3,
1369                       reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
1370                       FC_MAX_PDUSZ, 0);
1371 }
1372
1373 /*
1374  *   Flogi Acc completion callback.
1375  */
1376 static void
1377 bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
1378                              bfa_status_t status, u32 rsp_len,
1379                              u32 resid_len, struct fchs_s *rspfchs)
1380 {
1381         struct bfa_fcs_fabric_s *fabric = cbarg;
1382
1383         bfa_trc(fabric->fcs, status);
1384 }
1385
1386 /*
1387  *
1388  * @param[in] fabric - fabric
1389  * @param[in] wwn_t - new fabric name
1390  *
1391  * @return - none
1392  */
1393 void
1394 bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
1395                                wwn_t fabric_name)
1396 {
1397         struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
1398         char    pwwn_ptr[BFA_STRING_32];
1399         char    fwwn_ptr[BFA_STRING_32];
1400
1401         bfa_trc(fabric->fcs, fabric_name);
1402
1403         if (fabric->fabric_name == 0) {
1404                 /*
1405                  * With BRCD switches, we don't get Fabric Name in FLOGI.
1406                  * Don't generate a fabric name change event in this case.
1407                  */
1408                 fabric->fabric_name = fabric_name;
1409         } else {
1410                 fabric->fabric_name = fabric_name;
1411                 wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
1412                 wwn2str(fwwn_ptr,
1413                         bfa_fcs_lport_get_fabric_name(&fabric->bport));
1414                 BFA_LOG(KERN_WARNING, bfad, log_level,
1415                         "Base port WWN = %s Fabric WWN = %s\n",
1416                         pwwn_ptr, fwwn_ptr);
1417         }
1418 }
1419
1420 /*
1421  *      Returns FCS vf structure for a given vf_id.
1422  *
1423  *      param[in]       vf_id - VF_ID
1424  *
1425  *      return
1426  *      If lookup succeeds, retuns fcs vf object, otherwise returns NULL
1427  */
1428 bfa_fcs_vf_t   *
1429 bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
1430 {
1431         bfa_trc(fcs, vf_id);
1432         if (vf_id == FC_VF_ID_NULL)
1433                 return &fcs->fabric;
1434
1435         return NULL;
1436 }
1437
1438 /*
1439  * BFA FCS PPORT ( physical port)
1440  */
1441 static void
1442 bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
1443 {
1444         struct bfa_fcs_s      *fcs = cbarg;
1445
1446         bfa_trc(fcs, event);
1447
1448         switch (event) {
1449         case BFA_PORT_LINKUP:
1450                 bfa_fcs_fabric_link_up(&fcs->fabric);
1451                 break;
1452
1453         case BFA_PORT_LINKDOWN:
1454                 bfa_fcs_fabric_link_down(&fcs->fabric);
1455                 break;
1456
1457         default:
1458                 bfa_assert(0);
1459         }
1460 }
1461
1462 void
1463 bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
1464 {
1465         bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
1466 }
1467
1468 /*
1469  * BFA FCS UF ( Unsolicited Frames)
1470  */
1471
1472 /*
1473  *              BFA callback for unsolicited frame receive handler.
1474  *
1475  * @param[in]           cbarg           callback arg for receive handler
1476  * @param[in]           uf              unsolicited frame descriptor
1477  *
1478  * @return None
1479  */
1480 static void
1481 bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
1482 {
1483         struct bfa_fcs_s        *fcs = (struct bfa_fcs_s *) cbarg;
1484         struct fchs_s   *fchs = bfa_uf_get_frmbuf(uf);
1485         u16     len = bfa_uf_get_frmlen(uf);
1486         struct fc_vft_s *vft;
1487         struct bfa_fcs_fabric_s *fabric;
1488
1489         /*
1490          * check for VFT header
1491          */
1492         if (fchs->routing == FC_RTG_EXT_HDR &&
1493             fchs->cat_info == FC_CAT_VFT_HDR) {
1494                 bfa_stats(fcs, uf.tagged);
1495                 vft = bfa_uf_get_frmbuf(uf);
1496                 if (fcs->port_vfid == vft->vf_id)
1497                         fabric = &fcs->fabric;
1498                 else
1499                         fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
1500
1501                 /*
1502                  * drop frame if vfid is unknown
1503                  */
1504                 if (!fabric) {
1505                         bfa_assert(0);
1506                         bfa_stats(fcs, uf.vfid_unknown);
1507                         bfa_uf_free(uf);
1508                         return;
1509                 }
1510
1511                 /*
1512                  * skip vft header
1513                  */
1514                 fchs = (struct fchs_s *) (vft + 1);
1515                 len -= sizeof(struct fc_vft_s);
1516
1517                 bfa_trc(fcs, vft->vf_id);
1518         } else {
1519                 bfa_stats(fcs, uf.untagged);
1520                 fabric = &fcs->fabric;
1521         }
1522
1523         bfa_trc(fcs, ((u32 *) fchs)[0]);
1524         bfa_trc(fcs, ((u32 *) fchs)[1]);
1525         bfa_trc(fcs, ((u32 *) fchs)[2]);
1526         bfa_trc(fcs, ((u32 *) fchs)[3]);
1527         bfa_trc(fcs, ((u32 *) fchs)[4]);
1528         bfa_trc(fcs, ((u32 *) fchs)[5]);
1529         bfa_trc(fcs, len);
1530
1531         bfa_fcs_fabric_uf_recv(fabric, fchs, len);
1532         bfa_uf_free(uf);
1533 }
1534
1535 void
1536 bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
1537 {
1538         bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
1539 }