path: root/drivers/scsi/bfa/fabric.c

/*
 * Copyright (c) 2005-2009 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.
 */

/**
 *  fabric.c Fabric module implementation.
 */

#include "fcs_fabric.h"
#include "fcs_lport.h"
#include "fcs_vport.h"
#include "fcs_trcmod.h"
#include "fcs_fcxp.h"
#include "fcs_auth.h"
#include "fcs.h"
#include "fcbuild.h"
#include <log/bfa_log_fcs.h>
#include <aen/bfa_aen_port.h>
#include <bfa_svc.h>

BFA_TRC_FILE(FCS, FABRIC);

#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_pport_get_topology((__fabric)->fcs->bfa)    \
				== BFA_PPORT_TOPOLOGY_P2P)   \
	    (__fabric)->oper_type = BFA_PPORT_TYPE_NPORT;       \
    else                                                    \
	    (__fabric)->oper_type = BFA_PPORT_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_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);
/**
 *  fcs_fabric_sm fabric state machine functions
 */

/**
 * Fabric state machine events
 */
enum bfa_fcs_fabric_event {
	BFA_FCS_FABRIC_SM_CREATE = 1,	/*  fabric create from driver */
	BFA_FCS_FABRIC_SM_DELETE = 2,	/*  fabric delete from driver */
	BFA_FCS_FABRIC_SM_LINK_DOWN = 3,	/*  link down from port */
	BFA_FCS_FABRIC_SM_LINK_UP = 4,	/*  link up from port */
	BFA_FCS_FABRIC_SM_CONT_OP = 5,	/*  continue op from flogi/auth */
	BFA_FCS_FABRIC_SM_RETRY_OP = 6,	/*  continue op from flogi/auth */
	BFA_FCS_FABRIC_SM_NO_FABRIC = 7,	/*  no fabric from flogi/auth
						 */
	BFA_FCS_FABRIC_SM_PERF_EVFP = 8,	/*  perform EVFP from
						 *flogi/auth */
	BFA_FCS_FABRIC_SM_ISOLATE = 9,	/*  isolate from EVFP processing */
	BFA_FCS_FABRIC_SM_NO_TAGGING = 10,/*  no VFT tagging from EVFP */
	BFA_FCS_FABRIC_SM_DELAYED = 11,	/*  timeout delay event */
	BFA_FCS_FABRIC_SM_AUTH_FAILED = 12,	/*  authentication failed */
	BFA_FCS_FABRIC_SM_AUTH_SUCCESS =