text: /*
   * Copyright (c) 2005-2010 Brocade Communications Systems, Inc.
   * All rights reserved
   * www.brocade.com
   *
   * Linux driver for Brocade Fibre Channel Host Bus Adapter.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License (GPL) Version 2 as
   * published by the Free Software Foundation
   *
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   */
  
  /*
   *  bfa_fcs.c BFA FCS main
   */
  
  #include "bfad_drv.h"
  #include "bfad_im.h"
  #include "bfa_fcs.h"
  #include "bfa_fcbuild.h"
  
  BFA_TRC_FILE(FCS, FCS);
  
  /*
   * FCS sub-modules
   */
  struct bfa_fcs_mod_s {
  	void		(*attach) (struct bfa_fcs_s *fcs);
  	void		(*modinit) (struct bfa_fcs_s *fcs);
  	void		(*modexit) (struct bfa_fcs_s *fcs);
  };
  
  #define BFA_FCS_MODULE(_mod) { _mod ## _modinit, _mod ## _modexit }
  
  static struct bfa_fcs_mod_s fcs_modules[] = {
  	{ bfa_fcs_port_attach, NULL, NULL },
  	{ bfa_fcs_uf_attach, NULL, NULL },
  	{ bfa_fcs_fabric_attach, bfa_fcs_fabric_modinit,
  	  bfa_fcs_fabric_modexit },
  };
  
  /*
   *  fcs_api BFA FCS API
   */
  
  static void
  bfa_fcs_exit_comp(void *fcs_cbarg)
  {
  	struct bfa_fcs_s      *fcs = fcs_cbarg;
  	struct bfad_s         *bfad = fcs->bfad;
  
  	complete(&bfad->comp);
  }
  
  
  
  /*
   *  fcs_api BFA FCS API
   */
  
  /*
   * fcs attach -- called once to initialize data structures at driver attach time
   */
  void
  bfa_fcs_attach(struct bfa_fcs_s *fcs, struct bfa_s *bfa, struct bfad_s *bfad,
  	       bfa_boolean_t min_cfg)
  {
  	int		i;
  	struct bfa_fcs_mod_s  *mod;
  
  	fcs->bfa = bfa;
  	fcs->bfad = bfad;
  	fcs->min_cfg = min_cfg;
  	fcs->num_rport_logins = 0;
  
  	bfa->fcs = BFA_TRUE;
  	fcbuild_init();
  
  	for (i = 0; i < ARRAY_SIZE(fcs_modules); i++) {
  		mod = &fcs_modules[i];
  		if (mod->attach)
  			mod->attach(fcs);
  	}
  }
  
  /*
   * fcs initialization, called once after bfa initialization is complete
   */
  void
  bfa_fcs_init(struct bfa_fcs_s *fcs)
  {
  	int	i;
  	struct bfa_fcs_mod_s  *mod;
  
  	for (i = 0; i < ARRAY_SIZE(fcs_modules); i++) {
  		mod = &fcs_modules[i];
  		if (mod->modinit)
  			mod->modinit(fcs);
  	}
  }
  
  /*
   * FCS update cfg - reset the pwwn/nwwn of fabric base logical port
   * with values learned during bfa_init firmware GETATTR REQ.
   */
  void
  bfa_fcs_update_cfg(struct bfa_fcs_s *fcs)
  {
  	struct bfa_fcs_fabric_s *fabric = &fcs->fabric;
  	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
  	struct bfa_ioc_s *ioc = &fabric->fcs->bfa->ioc;
  
  	port_cfg->nwwn = ioc->attr->nwwn;
  	port_cfg->pwwn = ioc->attr->pwwn;
  }
  
  /*
   * Stop FCS operations.
   */
  void
  bfa_fcs_stop(struct bfa_fcs_s *fcs)
  {
  	bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
  	bfa_wc_up(&fcs->wc);
  	bfa_fcs_fabric_modstop(fcs);
  	bfa_wc_wait(&fcs->wc);
  }
  
  /*
   * fcs pbc vport initialization
   */
  void
  bfa_fcs_pbc_vport_init(struct bfa_fcs_s *fcs)
  {
  	int i, npbc_vports;
  	struct bfi_pbc_vport_s pbc_vports[BFI_PBC_MAX_VPORTS];
  
  	/* Initialize pbc vports */
  	if (!fcs->min_cfg) {
  		npbc_vports =
  			bfa_iocfc_get_pbc_vports(fcs->bfa, pbc_vports);
  		for (i = 0; i < npbc_vports; i++)
  			bfa_fcb_pbc_vport_create(fcs->bfa->bfad, pbc_vports[i]);
  	}
  }
  
  /*
   *	brief
   *		FCS driver details initialization.
   *
   *	param[in]		fcs		FCS instance
   *	param[in]		driver_info	Driver Details
   *
   *	return None
   */
  void
  bfa_fcs_driver_info_init(struct bfa_fcs_s *fcs,
  			struct bfa_fcs_driver_info_s *driver_info)
  {
  
  	fcs->driver_info = *driver_info;
  
  	bfa_fcs_fabric_psymb_init(&fcs->fabric);
  	bfa_fcs_fabric_nsymb_init(&fcs->fabric);
  }
  
  /*
   *	brief
   *		FCS instance cleanup and exit.
   *
   *	param[in]		fcs			FCS instance
   *	return None
   */
  void
  bfa_fcs_exit(struct bfa_fcs_s *fcs)
  {
  	struct bfa_fcs_mod_s  *mod;
  	int		nmods, i;
  
  	bfa_wc_init(&fcs->wc, bfa_fcs_exit_comp, fcs);
  
  	nmods = ARRAY_SIZE(fcs_modules);
  
  	for (i = 0; i < nmods; i++) {
  
  		mod = &fcs_modules[i];
  		if (mod->modexit) {
  			bfa_wc_up(&fcs->wc);
  			mod->modexit(fcs);
  		}
  	}
  
  	bfa_wc_wait(&fcs->wc);
  }
  
  
  /*
   * Fabric module implementation.
   */
  
  #define BFA_FCS_FABRIC_RETRY_DELAY	(2000)	/* Milliseconds */
  #define BFA_FCS_FABRIC_CLEANUP_DELAY	(10000)	/* Milliseconds */
  
  #define bfa_fcs_fabric_set_opertype(__fabric) do {			\
  	if (bfa_fcport_get_topology((__fabric)->fcs->bfa)		\
  				== BFA_PORT_TOPOLOGY_P2P) {		\
  		if (fabric->fab_type == BFA_FCS_FABRIC_SWITCHED)	\
  			(__fabric)->oper_type = BFA_PORT_TYPE_NPORT;	\
  		else							\
  			(__fabric)->oper_type = BFA_PORT_TYPE_P2P;	\
  	} else								\
  		(__fabric)->oper_type = BFA_PORT_TYPE_NLPORT;		\
  } while (0)
  
  /*
   * forward declarations
   */
  static void bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_delay(void *cbarg);
  static void bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_delete_comp(void *cbarg);
  static void bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_stop_comp(void *cbarg);
  static void bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric,
  				      struct fchs_s *fchs, u16 len);
  static void bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
  					 struct fchs_s *fchs, u16 len);
  static void bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric);
  static void bfa_fcs_fabric_flogiacc_comp(void *fcsarg,
  					 struct bfa_fcxp_s *fcxp, void *cbarg,
  					 bfa_status_t status,
  					 u32 rsp_len,
  					 u32 resid_len,
  					 struct fchs_s *rspfchs);
  
  static void	bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
  					 enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
  					  enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
  					   enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
  					enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
  					      enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
  				       enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
  					   enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
  				       enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
  					    enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
  					   enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
  					   enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
  					   enum bfa_fcs_fabric_event event);
  static void	bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
  					  enum bfa_fcs_fabric_event event);
  /*
   *   Beginning state before fabric creation.
   */
  static void
  bfa_fcs_fabric_sm_uninit(struct bfa_fcs_fabric_s *fabric,
  			 enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_CREATE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
  		bfa_fcs_fabric_init(fabric);
  		bfa_fcs_lport_init(&fabric->bport, &fabric->bport.port_cfg);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_UP:
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Beginning state before fabric creation.
   */
  static void
  bfa_fcs_fabric_sm_created(struct bfa_fcs_fabric_s *fabric,
  			  enum bfa_fcs_fabric_event event)
  {
  	struct bfa_s	*bfa = fabric->fcs->bfa;
  
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_START:
  		if (!bfa_fcport_is_linkup(fabric->fcs->bfa)) {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  			break;
  		}
  		if (bfa_fcport_get_topology(bfa) ==
  				BFA_PORT_TOPOLOGY_LOOP) {
  			fabric->fab_type = BFA_FCS_FABRIC_LOOP;
  			fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
  			fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
  			bfa_sm_set_state(fabric,
  					bfa_fcs_fabric_sm_online);
  			bfa_fcs_fabric_set_opertype(fabric);
  			bfa_fcs_lport_online(&fabric->bport);
  		} else {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
  			bfa_fcs_fabric_login(fabric);
  		}
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_UP:
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Link is down, awaiting LINK UP event from port. This is also the
   *   first state at fabric creation.
   */
  static void
  bfa_fcs_fabric_sm_linkdown(struct bfa_fcs_fabric_s *fabric,
  			   enum bfa_fcs_fabric_event event)
  {
  	struct bfa_s	*bfa = fabric->fcs->bfa;
  
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_LINK_UP:
  		if (bfa_fcport_get_topology(bfa) != BFA_PORT_TOPOLOGY_LOOP) {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
  			bfa_fcs_fabric_login(fabric);
  			break;
  		}
  		fabric->fab_type = BFA_FCS_FABRIC_LOOP;
  		fabric->bport.pid = bfa_fcport_get_myalpa(bfa);
  		fabric->bport.pid = bfa_hton3b(fabric->bport.pid);
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
  		bfa_fcs_fabric_set_opertype(fabric);
  		bfa_fcs_lport_online(&fabric->bport);
  		break;
  
  	case BFA_FCS_FABRIC_SM_RETRY_OP:
  	case BFA_FCS_FABRIC_SM_LOOPBACK:
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_STOP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
  		bfa_fcs_fabric_stop(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   FLOGI is in progress, awaiting FLOGI reply.
   */
  static void
  bfa_fcs_fabric_sm_flogi(struct bfa_fcs_fabric_s *fabric,
  			enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_CONT_OP:
  
  		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
  					   fabric->bb_credit);
  		fabric->fab_type = BFA_FCS_FABRIC_SWITCHED;
  
  		if (fabric->auth_reqd && fabric->is_auth) {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth);
  			bfa_trc(fabric->fcs, event);
  		} else {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
  			bfa_fcs_fabric_notify_online(fabric);
  		}
  		break;
  
  	case BFA_FCS_FABRIC_SM_RETRY_OP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi_retry);
  		bfa_timer_start(fabric->fcs->bfa, &fabric->delay_timer,
  				bfa_fcs_fabric_delay, fabric,
  				BFA_FCS_FABRIC_RETRY_DELAY);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LOOPBACK:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_loopback);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		bfa_fcs_fabric_set_opertype(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_NO_FABRIC:
  		fabric->fab_type = BFA_FCS_FABRIC_N2N;
  		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
  					   fabric->bb_credit);
  		bfa_fcs_fabric_notify_online(fabric);
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_nofabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  
  static void
  bfa_fcs_fabric_sm_flogi_retry(struct bfa_fcs_fabric_s *fabric,
  			      enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_DELAYED:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_flogi);
  		bfa_fcs_fabric_login(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		bfa_timer_stop(&fabric->delay_timer);
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_timer_stop(&fabric->delay_timer);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Authentication is in progress, awaiting authentication results.
   */
  static void
  bfa_fcs_fabric_sm_auth(struct bfa_fcs_fabric_s *fabric,
  		       enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_AUTH_FAILED:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		break;
  
  	case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_online);
  		bfa_fcs_fabric_notify_online(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_PERF_EVFP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Authentication failed
   */
  void
  bfa_fcs_fabric_sm_auth_failed(struct bfa_fcs_fabric_s *fabric,
  			      enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		bfa_fcs_fabric_notify_offline(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Port is in loopback mode.
   */
  void
  bfa_fcs_fabric_sm_loopback(struct bfa_fcs_fabric_s *fabric,
  			   enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		bfa_fcs_fabric_notify_offline(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   There is no attached fabric - private loop or NPort-to-NPort topology.
   */
  static void
  bfa_fcs_fabric_sm_nofabric(struct bfa_fcs_fabric_s *fabric,
  			   enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		bfa_fcs_fabric_notify_offline(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_NO_FABRIC:
  		bfa_trc(fabric->fcs, fabric->bb_credit);
  		bfa_fcport_set_tx_bbcredit(fabric->fcs->bfa,
  					   fabric->bb_credit);
  		break;
  
  	case BFA_FCS_FABRIC_SM_RETRY_OP:
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Fabric is online - normal operating state.
   */
  void
  bfa_fcs_fabric_sm_online(struct bfa_fcs_fabric_s *fabric,
  			 enum bfa_fcs_fabric_event event)
  {
  	struct bfa_s	*bfa = fabric->fcs->bfa;
  
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_linkdown);
  		if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
  			bfa_fcs_lport_offline(&fabric->bport);
  		} else {
  			bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  			bfa_fcs_fabric_notify_offline(fabric);
  		}
  		break;
  
  	case BFA_FCS_FABRIC_SM_DELETE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_deleting);
  		bfa_fcs_fabric_delete(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_STOP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_stopping);
  		bfa_fcs_fabric_stop(fabric);
  		break;
  
  	case BFA_FCS_FABRIC_SM_AUTH_FAILED:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_auth_failed);
  		bfa_sm_send_event(fabric->lps, BFA_LPS_SM_OFFLINE);
  		break;
  
  	case BFA_FCS_FABRIC_SM_AUTH_SUCCESS:
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   Exchanging virtual fabric parameters.
   */
  static void
  bfa_fcs_fabric_sm_evfp(struct bfa_fcs_fabric_s *fabric,
  		       enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_CONT_OP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_evfp_done);
  		break;
  
  	case BFA_FCS_FABRIC_SM_ISOLATE:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_isolated);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *   EVFP exchange complete and VFT tagging is enabled.
   */
  static void
  bfa_fcs_fabric_sm_evfp_done(struct bfa_fcs_fabric_s *fabric,
  			    enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  }
  
  /*
   *   Port is isolated after EVFP exchange due to VF_ID mismatch (N and F).
   */
  static void
  bfa_fcs_fabric_sm_isolated(struct bfa_fcs_fabric_s *fabric,
  			   enum bfa_fcs_fabric_event event)
  {
  	struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
  	char	pwwn_ptr[BFA_STRING_32];
  
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  	wwn2str(pwwn_ptr, fabric->bport.port_cfg.pwwn);
  
  	BFA_LOG(KERN_INFO, bfad, bfa_log_level,
  		"Port is isolated due to VF_ID mismatch. "
  		"PWWN: %s Port VF_ID: %04x switch port VF_ID: %04x.",
  		pwwn_ptr, fabric->fcs->port_vfid,
  		fabric->event_arg.swp_vfid);
  }
  
  /*
   *   Fabric is being deleted, awaiting vport delete completions.
   */
  static void
  bfa_fcs_fabric_sm_deleting(struct bfa_fcs_fabric_s *fabric,
  			   enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_DELCOMP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
  		bfa_wc_down(&fabric->fcs->wc);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_UP:
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		bfa_fcs_fabric_notify_offline(fabric);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   * Fabric is being stopped, awaiting vport stop completions.
   */
  static void
  bfa_fcs_fabric_sm_stopping(struct bfa_fcs_fabric_s *fabric,
  			   enum bfa_fcs_fabric_event event)
  {
  	struct bfa_s	*bfa = fabric->fcs->bfa;
  
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_STOPCOMP:
  		if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP) {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
  		} else {
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
  			bfa_sm_send_event(fabric->lps, BFA_LPS_SM_LOGOUT);
  		}
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_UP:
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		if (bfa_fcport_get_topology(bfa) == BFA_PORT_TOPOLOGY_LOOP)
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
  		else
  			bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_cleanup);
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   * Fabric is being stopped, cleanup without FLOGO
   */
  static void
  bfa_fcs_fabric_sm_cleanup(struct bfa_fcs_fabric_s *fabric,
  			  enum bfa_fcs_fabric_event event)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, event);
  
  	switch (event) {
  	case BFA_FCS_FABRIC_SM_STOPCOMP:
  	case BFA_FCS_FABRIC_SM_LOGOCOMP:
  		bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_created);
  		bfa_wc_down(&(fabric->fcs)->wc);
  		break;
  
  	case BFA_FCS_FABRIC_SM_LINK_DOWN:
  		/*
  		 * Ignore - can get this event if we get notified about IOC down
  		 * before the fabric completion callbk is done.
  		 */
  		break;
  
  	default:
  		bfa_sm_fault(fabric->fcs, event);
  	}
  }
  
  /*
   *  fcs_fabric_private fabric private functions
   */
  
  static void
  bfa_fcs_fabric_init(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
  
  	port_cfg->roles = BFA_LPORT_ROLE_FCP_IM;
  	port_cfg->nwwn = fabric->fcs->bfa->ioc.attr->nwwn;
  	port_cfg->pwwn = fabric->fcs->bfa->ioc.attr->pwwn;
  }
  
  /*
   * Port Symbolic Name Creation for base port.
   */
  void
  bfa_fcs_fabric_psymb_init(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
  	char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
  	struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
  
  	bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
  
  	/* Model name/number */
  	strncpy((char *)&port_cfg->sym_name, model,
  		BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
  	strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  		sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  	/* Driver Version */
  	strncat((char *)&port_cfg->sym_name, (char *)driver_info->version,
  		BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
  	strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  		sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  	/* Host machine name */
  	strncat((char *)&port_cfg->sym_name,
  		(char *)driver_info->host_machine_name,
  		BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
  	strncat((char *)&port_cfg->sym_name, BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  		sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  	/*
  	 * Host OS Info :
  	 * If OS Patch Info is not there, do not truncate any bytes from the
  	 * OS name string and instead copy the entire OS info string (64 bytes).
  	 */
  	if (driver_info->host_os_patch[0] == '\0') {
  		strncat((char *)&port_cfg->sym_name,
  			(char *)driver_info->host_os_name,
  			BFA_FCS_OS_STR_LEN);
  		strncat((char *)&port_cfg->sym_name,
  			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  	} else {
  		strncat((char *)&port_cfg->sym_name,
  			(char *)driver_info->host_os_name,
  			BFA_FCS_PORT_SYMBNAME_OSINFO_SZ);
  		strncat((char *)&port_cfg->sym_name,
  			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  		/* Append host OS Patch Info */
  		strncat((char *)&port_cfg->sym_name,
  			(char *)driver_info->host_os_patch,
  			BFA_FCS_PORT_SYMBNAME_OSPATCH_SZ);
  	}
  
  	/* null terminate */
  	port_cfg->sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
  }
  
  /*
   * Node Symbolic Name Creation for base port and all vports
   */
  void
  bfa_fcs_fabric_nsymb_init(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_lport_cfg_s *port_cfg = &fabric->bport.port_cfg;
  	char model[BFA_ADAPTER_MODEL_NAME_LEN] = {0};
  	struct bfa_fcs_driver_info_s *driver_info = &fabric->fcs->driver_info;
  
  	bfa_ioc_get_adapter_model(&fabric->fcs->bfa->ioc, model);
  
  	/* Model name/number */
  	strncpy((char *)&port_cfg->node_sym_name, model,
  		BFA_FCS_PORT_SYMBNAME_MODEL_SZ);
  	strncat((char *)&port_cfg->node_sym_name,
  			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  	/* Driver Version */
  	strncat((char *)&port_cfg->node_sym_name, (char *)driver_info->version,
  		BFA_FCS_PORT_SYMBNAME_VERSION_SZ);
  	strncat((char *)&port_cfg->node_sym_name,
  			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  	/* Host machine name */
  	strncat((char *)&port_cfg->node_sym_name,
  		(char *)driver_info->host_machine_name,
  		BFA_FCS_PORT_SYMBNAME_MACHINENAME_SZ);
  	strncat((char *)&port_cfg->node_sym_name,
  			BFA_FCS_PORT_SYMBNAME_SEPARATOR,
  			sizeof(BFA_FCS_PORT_SYMBNAME_SEPARATOR));
  
  	/* null terminate */
  	port_cfg->node_sym_name.symname[BFA_SYMNAME_MAXLEN - 1] = 0;
  }
  
  /*
   * bfa lps login completion callback
   */
  void
  bfa_cb_lps_flogi_comp(void *bfad, void *uarg, bfa_status_t status)
  {
  	struct bfa_fcs_fabric_s *fabric = uarg;
  
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_trc(fabric->fcs, status);
  
  	switch (status) {
  	case BFA_STATUS_OK:
  		fabric->stats.flogi_accepts++;
  		break;
  
  	case BFA_STATUS_INVALID_MAC:
  		/* Only for CNA */
  		fabric->stats.flogi_acc_err++;
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
  
  		return;
  
  	case BFA_STATUS_EPROTOCOL:
  		switch (fabric->lps->ext_status) {
  		case BFA_EPROTO_BAD_ACCEPT:
  			fabric->stats.flogi_acc_err++;
  			break;
  
  		case BFA_EPROTO_UNKNOWN_RSP:
  			fabric->stats.flogi_unknown_rsp++;
  			break;
  
  		default:
  			break;
  		}
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
  
  		return;
  
  	case BFA_STATUS_FABRIC_RJT:
  		fabric->stats.flogi_rejects++;
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
  		return;
  
  	default:
  		fabric->stats.flogi_rsp_err++;
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_RETRY_OP);
  		return;
  	}
  
  	fabric->bb_credit = fabric->lps->pr_bbcred;
  	bfa_trc(fabric->fcs, fabric->bb_credit);
  
  	if (!(fabric->lps->brcd_switch))
  		fabric->fabric_name =  fabric->lps->pr_nwwn;
  
  	/*
  	 * Check port type. It should be 1 = F-port.
  	 */
  	if (fabric->lps->fport) {
  		fabric->bport.pid = fabric->lps->lp_pid;
  		fabric->is_npiv = fabric->lps->npiv_en;
  		fabric->is_auth = fabric->lps->auth_req;
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_CONT_OP);
  	} else {
  		/*
  		 * Nport-2-Nport direct attached
  		 */
  		fabric->bport.port_topo.pn2n.rem_port_wwn =
  			fabric->lps->pr_pwwn;
  		fabric->fab_type = BFA_FCS_FABRIC_N2N;
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
  	}
  
  	bfa_trc(fabric->fcs, fabric->bport.pid);
  	bfa_trc(fabric->fcs, fabric->is_npiv);
  	bfa_trc(fabric->fcs, fabric->is_auth);
  }
  /*
   *		Allocate and send FLOGI.
   */
  static void
  bfa_fcs_fabric_login(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_s		*bfa = fabric->fcs->bfa;
  	struct bfa_lport_cfg_s	*pcfg = &fabric->bport.port_cfg;
  	u8			alpa = 0;
  
  
  	bfa_lps_flogi(fabric->lps, fabric, alpa, bfa_fcport_get_maxfrsize(bfa),
  		      pcfg->pwwn, pcfg->nwwn, fabric->auth_reqd);
  
  	fabric->stats.flogi_sent++;
  }
  
  static void
  bfa_fcs_fabric_notify_online(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_fcs_vport_s *vport;
  	struct list_head	      *qe, *qen;
  
  	bfa_trc(fabric->fcs, fabric->fabric_name);
  
  	bfa_fcs_fabric_set_opertype(fabric);
  	fabric->stats.fabric_onlines++;
  
  	/*
  	 * notify online event to base and then virtual ports
  	 */
  	bfa_fcs_lport_online(&fabric->bport);
  
  	list_for_each_safe(qe, qen, &fabric->vport_q) {
  		vport = (struct bfa_fcs_vport_s *) qe;
  		bfa_fcs_vport_online(vport);
  	}
  }
  
  static void
  bfa_fcs_fabric_notify_offline(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_fcs_vport_s *vport;
  	struct list_head	      *qe, *qen;
  
  	bfa_trc(fabric->fcs, fabric->fabric_name);
  	fabric->stats.fabric_offlines++;
  
  	/*
  	 * notify offline event first to vports and then base port.
  	 */
  	list_for_each_safe(qe, qen, &fabric->vport_q) {
  		vport = (struct bfa_fcs_vport_s *) qe;
  		bfa_fcs_vport_offline(vport);
  	}
  
  	bfa_fcs_lport_offline(&fabric->bport);
  
  	fabric->fabric_name = 0;
  	fabric->fabric_ip_addr[0] = 0;
  }
  
  static void
  bfa_fcs_fabric_delay(void *cbarg)
  {
  	struct bfa_fcs_fabric_s *fabric = cbarg;
  
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELAYED);
  }
  
  /*
   * Stop all vports and wait for vport stop completions.
   */
  static void
  bfa_fcs_fabric_stop(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_fcs_vport_s *vport;
  	struct list_head	*qe, *qen;
  
  	bfa_wc_init(&fabric->stop_wc, bfa_fcs_fabric_stop_comp, fabric);
  
  	list_for_each_safe(qe, qen, &fabric->vport_q) {
  		vport = (struct bfa_fcs_vport_s *) qe;
  		bfa_wc_up(&fabric->stop_wc);
  		bfa_fcs_vport_fcs_stop(vport);
  	}
  
  	bfa_wc_up(&fabric->stop_wc);
  	bfa_fcs_lport_stop(&fabric->bport);
  	bfa_wc_wait(&fabric->stop_wc);
  }
  
  /*
   * Delete all vports and wait for vport delete completions.
   */
  static void
  bfa_fcs_fabric_delete(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_fcs_vport_s *vport;
  	struct list_head	      *qe, *qen;
  
  	list_for_each_safe(qe, qen, &fabric->vport_q) {
  		vport = (struct bfa_fcs_vport_s *) qe;
  		bfa_fcs_vport_fcs_delete(vport);
  	}
  
  	bfa_fcs_lport_delete(&fabric->bport);
  	bfa_wc_wait(&fabric->wc);
  }
  
  static void
  bfa_fcs_fabric_delete_comp(void *cbarg)
  {
  	struct bfa_fcs_fabric_s *fabric = cbarg;
  
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELCOMP);
  }
  
  static void
  bfa_fcs_fabric_stop_comp(void *cbarg)
  {
  	struct bfa_fcs_fabric_s *fabric = cbarg;
  
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOPCOMP);
  }
  
  /*
   *  fcs_fabric_public fabric public functions
   */
  
  /*
   * Attach time initialization.
   */
  void
  bfa_fcs_fabric_attach(struct bfa_fcs_s *fcs)
  {
  	struct bfa_fcs_fabric_s *fabric;
  
  	fabric = &fcs->fabric;
  	memset(fabric, 0, sizeof(struct bfa_fcs_fabric_s));
  
  	/*
  	 * Initialize base fabric.
  	 */
  	fabric->fcs = fcs;
  	INIT_LIST_HEAD(&fabric->vport_q);
  	INIT_LIST_HEAD(&fabric->vf_q);
  	fabric->lps = bfa_lps_alloc(fcs->bfa);
  	WARN_ON(!fabric->lps);
  
  	/*
  	 * Initialize fabric delete completion handler. Fabric deletion is
  	 * complete when the last vport delete is complete.
  	 */
  	bfa_wc_init(&fabric->wc, bfa_fcs_fabric_delete_comp, fabric);
  	bfa_wc_up(&fabric->wc); /* For the base port */
  
  	bfa_sm_set_state(fabric, bfa_fcs_fabric_sm_uninit);
  	bfa_fcs_lport_attach(&fabric->bport, fabric->fcs, FC_VF_ID_NULL, NULL);
  }
  
  void
  bfa_fcs_fabric_modinit(struct bfa_fcs_s *fcs)
  {
  	bfa_sm_send_event(&fcs->fabric, BFA_FCS_FABRIC_SM_CREATE);
  	bfa_trc(fcs, 0);
  }
  
  /*
   *   Module cleanup
   */
  void
  bfa_fcs_fabric_modexit(struct bfa_fcs_s *fcs)
  {
  	struct bfa_fcs_fabric_s *fabric;
  
  	bfa_trc(fcs, 0);
  
  	/*
  	 * Cleanup base fabric.
  	 */
  	fabric = &fcs->fabric;
  	bfa_lps_delete(fabric->lps);
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_DELETE);
  }
  
  /*
   * Fabric module stop -- stop FCS actions
   */
  void
  bfa_fcs_fabric_modstop(struct bfa_fcs_s *fcs)
  {
  	struct bfa_fcs_fabric_s *fabric;
  
  	bfa_trc(fcs, 0);
  	fabric = &fcs->fabric;
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_STOP);
  }
  
  /*
   * Fabric module start -- kick starts FCS actions
   */
  void
  bfa_fcs_fabric_modstart(struct bfa_fcs_s *fcs)
  {
  	struct bfa_fcs_fabric_s *fabric;
  
  	bfa_trc(fcs, 0);
  	fabric = &fcs->fabric;
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_START);
  }
  
  
  /*
   *   Link up notification from BFA physical port module.
   */
  void
  bfa_fcs_fabric_link_up(struct bfa_fcs_fabric_s *fabric)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_UP);
  }
  
  /*
   *   Link down notification from BFA physical port module.
   */
  void
  bfa_fcs_fabric_link_down(struct bfa_fcs_fabric_s *fabric)
  {
  	bfa_trc(fabric->fcs, fabric->bport.port_cfg.pwwn);
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LINK_DOWN);
  }
  
  /*
   *   A child vport is being created in the fabric.
   *
   *   Call from vport module at vport creation. A list of base port and vports
   *   belonging to a fabric is maintained to propagate link events.
   *
   *   param[in] fabric - Fabric instance. This can be a base fabric or vf.
   *   param[in] vport  - Vport being created.
   *
   *   @return None (always succeeds)
   */
  void
  bfa_fcs_fabric_addvport(struct bfa_fcs_fabric_s *fabric,
  			struct bfa_fcs_vport_s *vport)
  {
  	/*
  	 * - add vport to fabric's vport_q
  	 */
  	bfa_trc(fabric->fcs, fabric->vf_id);
  
  	list_add_tail(&vport->qe, &fabric->vport_q);
  	fabric->num_vports++;
  	bfa_wc_up(&fabric->wc);
  }
  
  /*
   *   A child vport is being deleted from fabric.
   *
   *   Vport is being deleted.
   */
  void
  bfa_fcs_fabric_delvport(struct bfa_fcs_fabric_s *fabric,
  			struct bfa_fcs_vport_s *vport)
  {
  	list_del(&vport->qe);
  	fabric->num_vports--;
  	bfa_wc_down(&fabric->wc);
  }
  
  
  /*
   * Lookup for a vport within a fabric given its pwwn
   */
  struct bfa_fcs_vport_s *
  bfa_fcs_fabric_vport_lookup(struct bfa_fcs_fabric_s *fabric, wwn_t pwwn)
  {
  	struct bfa_fcs_vport_s *vport;
  	struct list_head	      *qe;
  
  	list_for_each(qe, &fabric->vport_q) {
  		vport = (struct bfa_fcs_vport_s *) qe;
  		if (bfa_fcs_lport_get_pwwn(&vport->lport) == pwwn)
  			return vport;
  	}
  
  	return NULL;
  }
  
  
  /*
   *  Get OUI of the attached switch.
   *
   *  Note : Use of this function should be avoided as much as possible.
   *         This function should be used only if there is any requirement
  *          to check for FOS version below 6.3.
   *         To check if the attached fabric is a brocade fabric, use
   *         bfa_lps_is_brcd_fabric() which works for FOS versions 6.3
   *         or above only.
   */
  
  u16
  bfa_fcs_fabric_get_switch_oui(struct bfa_fcs_fabric_s *fabric)
  {
  	wwn_t fab_nwwn;
  	u8 *tmp;
  	u16 oui;
  
  	fab_nwwn = fabric->lps->pr_nwwn;
  
  	tmp = (u8 *)&fab_nwwn;
  	oui = (tmp[3] << 8) | tmp[4];
  
  	return oui;
  }
  /*
   *		Unsolicited frame receive handling.
   */
  void
  bfa_fcs_fabric_uf_recv(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
  		       u16 len)
  {
  	u32	pid = fchs->d_id;
  	struct bfa_fcs_vport_s *vport;
  	struct list_head	      *qe;
  	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
  	struct fc_logi_s *flogi = (struct fc_logi_s *) els_cmd;
  
  	bfa_trc(fabric->fcs, len);
  	bfa_trc(fabric->fcs, pid);
  
  	/*
  	 * Look for our own FLOGI frames being looped back. This means an
  	 * external loopback cable is in place. Our own FLOGI frames are
  	 * sometimes looped back when switch port gets temporarily bypassed.
  	 */
  	if ((pid == bfa_ntoh3b(FC_FABRIC_PORT)) &&
  	    (els_cmd->els_code == FC_ELS_FLOGI) &&
  	    (flogi->port_name == bfa_fcs_lport_get_pwwn(&fabric->bport))) {
  		bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOOPBACK);
  		return;
  	}
  
  	/*
  	 * FLOGI/EVFP exchanges should be consumed by base fabric.
  	 */
  	if (fchs->d_id == bfa_hton3b(FC_FABRIC_PORT)) {
  		bfa_trc(fabric->fcs, pid);
  		bfa_fcs_fabric_process_uf(fabric, fchs, len);
  		return;
  	}
  
  	if (fabric->bport.pid == pid) {
  		/*
  		 * All authentication frames should be routed to auth
  		 */
  		bfa_trc(fabric->fcs, els_cmd->els_code);
  		if (els_cmd->els_code == FC_ELS_AUTH) {
  			bfa_trc(fabric->fcs, els_cmd->els_code);
  			return;
  		}
  
  		bfa_trc(fabric->fcs, *(u8 *) ((u8 *) fchs));
  		bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
  		return;
  	}
  
  	/*
  	 * look for a matching local port ID
  	 */
  	list_for_each(qe, &fabric->vport_q) {
  		vport = (struct bfa_fcs_vport_s *) qe;
  		if (vport->lport.pid == pid) {
  			bfa_fcs_lport_uf_recv(&vport->lport, fchs, len);
  			return;
  		}
  	}
  
  	if (!bfa_fcs_fabric_is_switched(fabric))
  		bfa_fcs_lport_uf_recv(&fabric->bport, fchs, len);
  
  	bfa_trc(fabric->fcs, fchs->type);
  }
  
  /*
   *		Unsolicited frames to be processed by fabric.
   */
  static void
  bfa_fcs_fabric_process_uf(struct bfa_fcs_fabric_s *fabric, struct fchs_s *fchs,
  			  u16 len)
  {
  	struct fc_els_cmd_s *els_cmd = (struct fc_els_cmd_s *) (fchs + 1);
  
  	bfa_trc(fabric->fcs, els_cmd->els_code);
  
  	switch (els_cmd->els_code) {
  	case FC_ELS_FLOGI:
  		bfa_fcs_fabric_process_flogi(fabric, fchs, len);
  		break;
  
  	default:
  		/*
  		 * need to generate a LS_RJT
  		 */
  		break;
  	}
  }
  
  /*
   *	Process	incoming FLOGI
   */
  static void
  bfa_fcs_fabric_process_flogi(struct bfa_fcs_fabric_s *fabric,
  			struct fchs_s *fchs, u16 len)
  {
  	struct fc_logi_s *flogi = (struct fc_logi_s *) (fchs + 1);
  	struct bfa_fcs_lport_s *bport = &fabric->bport;
  
  	bfa_trc(fabric->fcs, fchs->s_id);
  
  	fabric->stats.flogi_rcvd++;
  	/*
  	 * Check port type. It should be 0 = n-port.
  	 */
  	if (flogi->csp.port_type) {
  		/*
  		 * @todo: may need to send a LS_RJT
  		 */
  		bfa_trc(fabric->fcs, flogi->port_name);
  		fabric->stats.flogi_rejected++;
  		return;
  	}
  
  	fabric->bb_credit = be16_to_cpu(flogi->csp.bbcred);
  	bport->port_topo.pn2n.rem_port_wwn = flogi->port_name;
  	bport->port_topo.pn2n.reply_oxid = fchs->ox_id;
  
  	/*
  	 * Send a Flogi Acc
  	 */
  	bfa_fcs_fabric_send_flogi_acc(fabric);
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_NO_FABRIC);
  }
  
  static void
  bfa_fcs_fabric_send_flogi_acc(struct bfa_fcs_fabric_s *fabric)
  {
  	struct bfa_lport_cfg_s *pcfg = &fabric->bport.port_cfg;
  	struct bfa_fcs_lport_n2n_s *n2n_port = &fabric->bport.port_topo.pn2n;
  	struct bfa_s	  *bfa = fabric->fcs->bfa;
  	struct bfa_fcxp_s *fcxp;
  	u16	reqlen;
  	struct fchs_s	fchs;
  
  	fcxp = bfa_fcs_fcxp_alloc(fabric->fcs, BFA_FALSE);
  	/*
  	 * Do not expect this failure -- expect remote node to retry
  	 */
  	if (!fcxp)
  		return;
  
  	reqlen = fc_flogi_acc_build(&fchs, bfa_fcxp_get_reqbuf(fcxp),
  				    bfa_hton3b(FC_FABRIC_PORT),
  				    n2n_port->reply_oxid, pcfg->pwwn,
  				    pcfg->nwwn,
  				    bfa_fcport_get_maxfrsize(bfa),
  				    bfa_fcport_get_rx_bbcredit(bfa), 0);
  
  	bfa_fcxp_send(fcxp, NULL, fabric->vf_id, fabric->lps->bfa_tag,
  		      BFA_FALSE, FC_CLASS_3,
  		      reqlen, &fchs, bfa_fcs_fabric_flogiacc_comp, fabric,
  		      FC_MAX_PDUSZ, 0);
  }
  
  /*
   *   Flogi Acc completion callback.
   */
  static void
  bfa_fcs_fabric_flogiacc_comp(void *fcsarg, struct bfa_fcxp_s *fcxp, void *cbarg,
  			     bfa_status_t status, u32 rsp_len,
  			     u32 resid_len, struct fchs_s *rspfchs)
  {
  	struct bfa_fcs_fabric_s *fabric = cbarg;
  
  	bfa_trc(fabric->fcs, status);
  }
  
  
  /*
   * Send AEN notification
   */
  static void
  bfa_fcs_fabric_aen_post(struct bfa_fcs_lport_s *port,
  			enum bfa_port_aen_event event)
  {
  	struct bfad_s *bfad = (struct bfad_s *)port->fabric->fcs->bfad;
  	struct bfa_aen_entry_s  *aen_entry;
  
  	bfad_get_aen_entry(bfad, aen_entry);
  	if (!aen_entry)
  		return;
  
  	aen_entry->aen_data.port.pwwn = bfa_fcs_lport_get_pwwn(port);
  	aen_entry->aen_data.port.fwwn = bfa_fcs_lport_get_fabric_name(port);
  
  	/* Send the AEN notification */
  	bfad_im_post_vendor_event(aen_entry, bfad, ++port->fcs->fcs_aen_seq,
  				  BFA_AEN_CAT_PORT, event);
  }
  
  /*
   *
   * @param[in] fabric - fabric
   * @param[in] wwn_t - new fabric name
   *
   * @return - none
   */
  void
  bfa_fcs_fabric_set_fabric_name(struct bfa_fcs_fabric_s *fabric,
  			       wwn_t fabric_name)
  {
  	struct bfad_s *bfad = (struct bfad_s *)fabric->fcs->bfad;
  	char	pwwn_ptr[BFA_STRING_32];
  	char	fwwn_ptr[BFA_STRING_32];
  
  	bfa_trc(fabric->fcs, fabric_name);
  
  	if (fabric->fabric_name == 0) {
  		/*
  		 * With BRCD switches, we don't get Fabric Name in FLOGI.
  		 * Don't generate a fabric name change event in this case.
  		 */
  		fabric->fabric_name = fabric_name;
  	} else {
  		fabric->fabric_name = fabric_name;
  		wwn2str(pwwn_ptr, bfa_fcs_lport_get_pwwn(&fabric->bport));
  		wwn2str(fwwn_ptr,
  			bfa_fcs_lport_get_fabric_name(&fabric->bport));
  		BFA_LOG(KERN_WARNING, bfad, bfa_log_level,
  			"Base port WWN = %s Fabric WWN = %s\n",
  			pwwn_ptr, fwwn_ptr);
  		bfa_fcs_fabric_aen_post(&fabric->bport,
  				BFA_PORT_AEN_FABRIC_NAME_CHANGE);
  	}
  }
  
  void
  bfa_cb_lps_flogo_comp(void *bfad, void *uarg)
  {
  	struct bfa_fcs_fabric_s *fabric = uarg;
  	bfa_sm_send_event(fabric, BFA_FCS_FABRIC_SM_LOGOCOMP);
  }
  
  /*
   *	Returns FCS vf structure for a given vf_id.
   *
   *	param[in]	vf_id - VF_ID
   *
   *	return
   *	If lookup succeeds, retuns fcs vf object, otherwise returns NULL
   */
  bfa_fcs_vf_t   *
  bfa_fcs_vf_lookup(struct bfa_fcs_s *fcs, u16 vf_id)
  {
  	bfa_trc(fcs, vf_id);
  	if (vf_id == FC_VF_ID_NULL)
  		return &fcs->fabric;
  
  	return NULL;
  }
  
  /*
   *	Return the list of local logical ports present in the given VF.
   *
   *	@param[in]	vf	vf for which logical ports are returned
   *	@param[out]	lpwwn	returned logical port wwn list
   *	@param[in,out]	nlports in:size of lpwwn list;
   *				out:total elements present,
   *				actual elements returned is limited by the size
   */
  void
  bfa_fcs_vf_get_ports(bfa_fcs_vf_t *vf, wwn_t lpwwn[], int *nlports)
  {
  	struct list_head *qe;
  	struct bfa_fcs_vport_s *vport;
  	int	i = 0;
  	struct bfa_fcs_s	*fcs;
  
  	if (vf == NULL || lpwwn == NULL || *nlports == 0)
  		return;
  
  	fcs = vf->fcs;
  
  	bfa_trc(fcs, vf->vf_id);
  	bfa_trc(fcs, (uint32_t) *nlports);
  
  	lpwwn[i++] = vf->bport.port_cfg.pwwn;
  
  	list_for_each(qe, &vf->vport_q) {
  		if (i >= *nlports)
  			break;
  
  		vport = (struct bfa_fcs_vport_s *) qe;
  		lpwwn[i++] = vport->lport.port_cfg.pwwn;
  	}
  
  	bfa_trc(fcs, i);
  	*nlports = i;
  }
  
  /*
   * BFA FCS PPORT ( physical port)
   */
  static void
  bfa_fcs_port_event_handler(void *cbarg, enum bfa_port_linkstate event)
  {
  	struct bfa_fcs_s      *fcs = cbarg;
  
  	bfa_trc(fcs, event);
  
  	switch (event) {
  	case BFA_PORT_LINKUP:
  		bfa_fcs_fabric_link_up(&fcs->fabric);
  		break;
  
  	case BFA_PORT_LINKDOWN:
  		bfa_fcs_fabric_link_down(&fcs->fabric);
  		break;
  
  	default:
  		WARN_ON(1);
  	}
  }
  
  void
  bfa_fcs_port_attach(struct bfa_fcs_s *fcs)
  {
  	bfa_fcport_event_register(fcs->bfa, bfa_fcs_port_event_handler, fcs);
  }
  
  /*
   * BFA FCS UF ( Unsolicited Frames)
   */
  
  /*
   *		BFA callback for unsolicited frame receive handler.
   *
   * @param[in]		cbarg		callback arg for receive handler
   * @param[in]		uf		unsolicited frame descriptor
   *
   * @return None
   */
  static void
  bfa_fcs_uf_recv(void *cbarg, struct bfa_uf_s *uf)
  {
  	struct bfa_fcs_s	*fcs = (struct bfa_fcs_s *) cbarg;
  	struct fchs_s	*fchs = bfa_uf_get_frmbuf(uf);
  	u16	len = bfa_uf_get_frmlen(uf);
  	struct fc_vft_s *vft;
  	struct bfa_fcs_fabric_s *fabric;
  
  	/*
  	 * check for VFT header
  	 */
  	if (fchs->routing == FC_RTG_EXT_HDR &&
  	    fchs->cat_info == FC_CAT_VFT_HDR) {
  		bfa_stats(fcs, uf.tagged);
  		vft = bfa_uf_get_frmbuf(uf);
  		if (fcs->port_vfid == vft->vf_id)
  			fabric = &fcs->fabric;
  		else
  			fabric = bfa_fcs_vf_lookup(fcs, (u16) vft->vf_id);
  
  		/*
  		 * drop frame if vfid is unknown
  		 */
  		if (!fabric) {
  			WARN_ON(1);
  			bfa_stats(fcs, uf.vfid_unknown);
  			bfa_uf_free(uf);
  			return;
  		}
  
  		/*
  		 * skip vft header
  		 */
  		fchs = (struct fchs_s *) (vft + 1);
  		len -= sizeof(struct fc_vft_s);
  
  		bfa_trc(fcs, vft->vf_id);
  	} else {
  		bfa_stats(fcs, uf.untagged);
  		fabric = &fcs->fabric;
  	}
  
  	bfa_trc(fcs, ((u32 *) fchs)[0]);
  	bfa_trc(fcs, ((u32 *) fchs)[1]);
  	bfa_trc(fcs, ((u32 *) fchs)[2]);
  	bfa_trc(fcs, ((u32 *) fchs)[3]);
  	bfa_trc(fcs, ((u32 *) fchs)[4]);
  	bfa_trc(fcs, ((u32 *) fchs)[5]);
  	bfa_trc(fcs, len);
  
  	bfa_fcs_fabric_uf_recv(fabric, fchs, len);
  	bfa_uf_free(uf);
  }
  
  void
  bfa_fcs_uf_attach(struct bfa_fcs_s *fcs)
  {
  	bfa_uf_recv_register(fcs->bfa, bfa_fcs_uf_recv, fcs);
  }
  