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/*

 *  FiberChannel transport specific attributes exported to sysfs.

 *

 *  Copyright (c) 2003 Silicon Graphics, Inc.  All rights reserved.

 *

 *  This program is free software; you can redistribute it and/or modify

 *  it under the terms of the GNU General Public License as published by

 *  the Free Software Foundation; either version 2 of the License, or

 *  (at your option) any later version.

 *

 *  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.

 *

 *  You should have received a copy of the GNU General Public License

 *  along with this program; if not, write to the Free Software

 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 *  ========

 *

 *  Copyright (C) 2004-2007   James Smart, Emulex Corporation

 *    Rewrite for host, target, device, and remote port attributes,

 *    statistics, and service functions...

 *

 */

#ifndef SCSI_TRANSPORT_FC_H

#define SCSI_TRANSPORT_FC_H

#include <linux/sched.h>

#include <scsi/scsi.h>

#include <scsi/scsi_netlink.h>

struct scsi_transport_template;

/*

 * FC Port definitions - Following FC HBAAPI guidelines

 *

 * Note: Not all binary values for the different fields match HBAAPI.

 *  Instead, we use densely packed ordinal values or enums.

 *  We get away with this as we never present the actual binary values

 *  externally. For sysfs, we always present the string that describes

 *  the value. Thus, an admin doesn't need a magic HBAAPI decoder ring

 *  to understand the values. The HBAAPI user-space library is free to

 *  convert the strings into the HBAAPI-specified binary values.

 *

 * Note: Not all HBAAPI-defined values are contained in the definitions

 *  below. Those not appropriate to an fc_host (e.g. FCP initiator) have

 *  been removed.

 */

/*

 * fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c

 * (for the ascii descriptions).

 */

enum fc_port_type {

        FC_PORTTYPE_UNKNOWN,

        FC_PORTTYPE_OTHER,

        FC_PORTTYPE_NOTPRESENT,

        FC_PORTTYPE_NPORT,              /* Attached to FPort */

        FC_PORTTYPE_NLPORT,             /* (Public) Loop w/ FLPort */

        FC_PORTTYPE_LPORT,              /* (Private) Loop w/o FLPort */

        FC_PORTTYPE_PTP,                /* Point to Point w/ another NPort */

        FC_PORTTYPE_NPIV,               /* VPORT based on NPIV */

};

/*

 * fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c

 * (for the ascii descriptions).

 */

enum fc_port_state {

        FC_PORTSTATE_UNKNOWN,

        FC_PORTSTATE_NOTPRESENT,

        FC_PORTSTATE_ONLINE,

        FC_PORTSTATE_OFFLINE,           /* User has taken Port Offline */

        FC_PORTSTATE_BLOCKED,

        FC_PORTSTATE_BYPASSED,

        FC_PORTSTATE_DIAGNOSTICS,

        FC_PORTSTATE_LINKDOWN,

        FC_PORTSTATE_ERROR,

        FC_PORTSTATE_LOOPBACK,

        FC_PORTSTATE_DELETED,

};

/*

 * fc_vport_state: If you alter this, you also need to alter

 * scsi_transport_fc.c (for the ascii descriptions).

 */

enum fc_vport_state {

        FC_VPORT_UNKNOWN,

        FC_VPORT_ACTIVE,

        FC_VPORT_DISABLED,

        FC_VPORT_LINKDOWN,

        FC_VPORT_INITIALIZING,

        FC_VPORT_NO_FABRIC_SUPP,

        FC_VPORT_NO_FABRIC_RSCS,

        FC_VPORT_FABRIC_LOGOUT,

        FC_VPORT_FABRIC_REJ_WWN,

        FC_VPORT_FAILED,

};

/*

 * FC Classes of Service

 * Note: values are not enumerated, as they can be "or'd" together

 * for reporting (e.g. report supported_classes). If you alter this list,

 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).

 */

#define FC_COS_UNSPECIFIED              0

#define FC_COS_CLASS1                   2

#define FC_COS_CLASS2                   4

#define FC_COS_CLASS3                   8

#define FC_COS_CLASS4                   0x10

#define FC_COS_CLASS6                   0x40

/*

 * FC Port Speeds

 * Note: values are not enumerated, as they can be "or'd" together

 * for reporting (e.g. report supported_speeds). If you alter this list,

 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).

 */

#define FC_PORTSPEED_UNKNOWN            0 /* Unknown - transceiver

                                             incapable of reporting */

#define FC_PORTSPEED_1GBIT              1

#define FC_PORTSPEED_2GBIT              2

#define FC_PORTSPEED_4GBIT              4

#define FC_PORTSPEED_10GBIT             8

#define FC_PORTSPEED_8GBIT              0x10

#define FC_PORTSPEED_16GBIT             0x20

#define FC_PORTSPEED_NOT_NEGOTIATED     (1 << 15) /* Speed not established */

/*

 * fc_tgtid_binding_type: If you alter this, you also need to alter

 * scsi_transport_fc.c (for the ascii descriptions).

 */

enum fc_tgtid_binding_type  {

        FC_TGTID_BIND_NONE,

        FC_TGTID_BIND_BY_WWPN,

        FC_TGTID_BIND_BY_WWNN,

        FC_TGTID_BIND_BY_ID,

};

/*

 * FC Port Roles

 * Note: values are not enumerated, as they can be "or'd" together

 * for reporting (e.g. report roles). If you alter this list,

 * you also need to alter scsi_transport_fc.c (for the ascii descriptions).

 */

#define FC_PORT_ROLE_UNKNOWN                    0x00

#define FC_PORT_ROLE_FCP_TARGET                 0x01

#define FC_PORT_ROLE_FCP_INITIATOR              0x02

#define FC_PORT_ROLE_IP_PORT                    0x04

/* The following are for compatibility */

#define FC_RPORT_ROLE_UNKNOWN                   FC_PORT_ROLE_UNKNOWN

#define FC_RPORT_ROLE_FCP_TARGET                FC_PORT_ROLE_FCP_TARGET

#define FC_RPORT_ROLE_FCP_INITIATOR             FC_PORT_ROLE_FCP_INITIATOR

#define FC_RPORT_ROLE_IP_PORT                   FC_PORT_ROLE_IP_PORT

/* Macro for use in defining Virtual Port attributes */

#define FC_VPORT_ATTR(_name,_mode,_show,_store)                         \

struct class_device_attribute class_device_attr_vport_##_name =         \

        __ATTR(_name,_mode,_show,_store)

/*

 * FC Virtual Port Attributes

 *

 * This structure exists for each FC port is a virtual FC port. Virtual

 * ports share the physical link with the Physical port. Each virtual

 * ports has a unique presense on the SAN, and may be instantiated via

 * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a

 * unique presense, each vport has it's own view of the fabric,

 * authentication priviledge, and priorities.

 *

 * A virtual port may support 1 or more FC4 roles. Typically it is a

 * FCP Initiator. It could be a FCP Target, or exist sole for an IP over FC

 * roles. FC port attributes for the vport will be reported on any

 * fc_host class object allocated for an FCP Initiator.

 *

 * --

 *

 * Fixed attributes are not expected to change. The driver is

 * expected to set these values after receiving the fc_vport structure

 * via the vport_create() call from the transport.

 * The transport fully manages all get functions w/o driver interaction.

 *

 * Dynamic attributes are expected to change. The driver participates

 * in all get/set operations via functions provided by the driver.

 *

 * Private attributes are transport-managed values. They are fully

 * managed by the transport w/o driver interaction.

 */

#define FC_VPORT_SYMBOLIC_NAMELEN               64

struct fc_vport {

        /* Fixed Attributes */

        /* Dynamic Attributes */

        /* Private (Transport-managed) Attributes */

        enum fc_vport_state vport_state;

        enum fc_vport_state vport_last_state;

        u64 node_name;

        u64 port_name;

        u32 roles;

        u32 vport_id;           /* Admin Identifier for the vport */

        enum fc_port_type vport_type;

        char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];

        /* exported data */

        void *dd_data;                  /* Used for driver-specific storage */

        /* internal data */

        struct Scsi_Host *shost;        /* Physical Port Parent */

        unsigned int channel;

        u32 number;

        u8 flags;

        struct list_head peers;

        struct device dev;

        struct work_struct vport_delete_work;

} __attribute__((aligned(sizeof(unsigned long))));

/* bit field values for struct fc_vport "flags" field: */

#define FC_VPORT_CREATING               0x01

#define FC_VPORT_DELETING               0x02

#define FC_VPORT_DELETED                0x04

#define FC_VPORT_DEL                    0x06    /* Any DELETE state */

#define dev_to_vport(d)                         \

        container_of(d, struct fc_vport, dev)

#define transport_class_to_vport(classdev)      \

        dev_to_vport(classdev->dev)

#define vport_to_shost(v)                       \

        (v->shost)

#define vport_to_shost_channel(v)               \

        (v->channel)

#define vport_to_parent(v)                      \

        (v->dev.parent)

/* Error return codes for vport_create() callback */

#define VPCERR_UNSUPPORTED              -ENOSYS         /* no driver/adapter

                                                           support */

#define VPCERR_BAD_WWN                  -ENOTUNIQ       /* driver validation

                                                           of WWNs failed */

#define VPCERR_NO_FABRIC_SUPP           -EOPNOTSUPP     /* Fabric connection

                                                           is loop or the

                                                           Fabric Port does

                                                           not support NPIV */

/*

 * fc_rport_identifiers: This set of data contains all elements

 * to uniquely identify a remote FC port. The driver uses this data

 * to report the existence of a remote FC port in the topology. Internally,

 * the transport uses this data for attributes and to manage consistent

 * target id bindings.

 */

struct fc_rport_identifiers {

        u64 node_name;

        u64 port_name;

        u32 port_id;

        u32 roles;

};

/* Macro for use in defining Remote Port attributes */

#define FC_RPORT_ATTR(_name,_mode,_show,_store)                         \

struct class_device_attribute class_device_attr_rport_##_name =         \

        __ATTR(_name,_mode,_show,_store)

/*

 * FC Remote Port Attributes

 *

 * This structure exists for each remote FC port that a LLDD notifies

 * the subsystem of.  A remote FC port may or may not be a SCSI Target,

 * also be a SCSI initiator, IP endpoint, etc. As such, the remote

 * port is considered a separate entity, independent of "role" (such

 * as scsi target).

 *

 * --

 *

 * Attributes are based on HBAAPI V2.0 definitions. Only those

 * attributes that are determinable by the local port (aka Host)

 * are contained.

 *

 * Fixed attributes are not expected to change. The driver is

 * expected to set these values after successfully calling

 * fc_remote_port_add(). The transport fully manages all get functions

 * w/o driver interaction.

 *

 * Dynamic attributes are expected to change. The driver participates

 * in all get/set operations via functions provided by the driver.

 *

 * Private attributes are transport-managed values. They are fully

 * managed by the transport w/o driver interaction.

 */

struct fc_rport {       /* aka fc_starget_attrs */

        /* Fixed Attributes */

        u32 maxframe_size;

        u32 supported_classes;

        /* Dynamic Attributes */

        u32 dev_loss_tmo;       /* Remote Port loss timeout in seconds. */

        /* Private (Transport-managed) Attributes */

        u64 node_name;

        u64 port_name;

        u32 port_id;

        u32 roles;

        enum fc_port_state port_state;  /* Will only be ONLINE or UNKNOWN */

        u32 scsi_target_id;

        u32 fast_io_fail_tmo;

        /* exported data */

        void *dd_data;                  /* Used for driver-specific storage */

        /* internal data */

        unsigned int channel;

        u32 number;

        u8 flags;

        struct list_head peers;

        struct device dev;

        struct delayed_work dev_loss_work;

        struct work_struct scan_work;

        struct delayed_work fail_io_work;

        struct work_struct stgt_delete_work;

        struct work_struct rport_delete_work;

} __attribute__((aligned(sizeof(unsigned long))));

/* bit field values for struct fc_rport "flags" field: */

#define FC_RPORT_DEVLOSS_PENDING        0x01

#define FC_RPORT_SCAN_PENDING           0x02

#define dev_to_rport(d)                         \

        container_of(d, struct fc_rport, dev)

#define transport_class_to_rport(classdev)      \

        dev_to_rport(classdev->dev)

#define rport_to_shost(r)                       \

        dev_to_shost(r->dev.parent)

/*

 * FC SCSI Target Attributes

 *

 * The SCSI Target is considered an extention of a remote port (as

 * a remote port can be more than a SCSI Target). Within the scsi

 * subsystem, we leave the Target as a separate entity. Doing so

 * provides backward compatibility with prior FC transport api's,

 * and lets remote ports be handled entirely within the FC transport

 * and independently from the scsi subsystem. The drawback is that

 * some data will be duplicated.

 */

struct fc_starget_attrs {       /* aka fc_target_attrs */

        /* Dynamic Attributes */

        u64 node_name;

        u64 port_name;

        u32 port_id;

};

#define fc_starget_node_name(x) \

        (((struct fc_starget_attrs *)&(x)->starget_data)->node_name)

#define fc_starget_port_name(x) \

        (((struct fc_starget_attrs *)&(x)->starget_data)->port_name)

#define fc_starget_port_id(x) \

        (((struct fc_starget_attrs *)&(x)->starget_data)->port_id)

#define starget_to_rport(s)                     \

        scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL

/*

 * FC Local Port (Host) Statistics

 */

/* FC Statistics - Following FC HBAAPI v2.0 guidelines */

struct fc_host_statistics {

        /* port statistics */

        u64 seconds_since_last_reset;

        u64 tx_frames;

        u64 tx_words;

        u64 rx_frames;

        u64 rx_words;

        u64 lip_count;

        u64 nos_count;

        u64 error_frames;

        u64 dumped_frames;

        u64 link_failure_count;

        u64 loss_of_sync_count;

        u64 loss_of_signal_count;

        u64 prim_seq_protocol_err_count;

        u64 invalid_tx_word_count;

        u64 invalid_crc_count;

        /* fc4 statistics  (only FCP supported currently) */

        u64 fcp_input_requests;

        u64 fcp_output_requests;

        u64 fcp_control_requests;

        u64 fcp_input_megabytes;

        u64 fcp_output_megabytes;

};

/*

 * FC Event Codes - Polled and Async, following FC HBAAPI v2.0 guidelines

 */

/*

 * fc_host_event_code: If you alter this, you also need to alter

 * scsi_transport_fc.c (for the ascii descriptions).

 */

enum fc_host_event_code  {

        FCH_EVT_LIP                     = 0x1,

        FCH_EVT_LINKUP                  = 0x2,

        FCH_EVT_LINKDOWN                = 0x3,

        FCH_EVT_LIPRESET                = 0x4,

        FCH_EVT_RSCN                    = 0x5,

        FCH_EVT_ADAPTER_CHANGE          = 0x103,

        FCH_EVT_PORT_UNKNOWN            = 0x200,

        FCH_EVT_PORT_OFFLINE            = 0x201,

        FCH_EVT_PORT_ONLINE             = 0x202,

        FCH_EVT_PORT_FABRIC             = 0x204,

        FCH_EVT_LINK_UNKNOWN            = 0x500,

        FCH_EVT_VENDOR_UNIQUE           = 0xffff,

};

/*

 * FC Local Port (Host) Attributes

 *

 * Attributes are based on HBAAPI V2.0 definitions.

 * Note: OSDeviceName is determined by user-space library

 *

 * Fixed attributes are not expected to change. The driver is

 * expected to set these values after successfully calling scsi_add_host().

 * The transport fully manages all get functions w/o driver interaction.

 *

 * Dynamic attributes are expected to change. The driver participates

 * in all get/set operations via functions provided by the driver.

 *

 * Private attributes are transport-managed values. They are fully

 * managed by the transport w/o driver interaction.

 */

#define FC_FC4_LIST_SIZE                32

#define FC_SYMBOLIC_NAME_SIZE           256

#define FC_VERSION_STRING_SIZE          64

#define FC_SERIAL_NUMBER_SIZE           80

struct fc_host_attrs {

        /* Fixed Attributes */

        u64 node_name;

        u64 port_name;

        u64 permanent_port_name;

        u32 supported_classes;

        u8  supported_fc4s[FC_FC4_LIST_SIZE];

        u32 supported_speeds;

        u32 maxframe_size;

        u16 max_npiv_vports;

        char serial_number[FC_SERIAL_NUMBER_SIZE];

        /* Dynamic Attributes */

        u32 port_id;

        enum fc_port_type port_type;

        enum fc_port_state port_state;

        u8  active_fc4s[FC_FC4_LIST_SIZE];

        u32 speed;

        u64 fabric_name;

        char symbolic_name[FC_SYMBOLIC_NAME_SIZE];

        char system_hostname[FC_SYMBOLIC_NAME_SIZE];

        /* Private (Transport-managed) Attributes */

        enum fc_tgtid_binding_type  tgtid_bind_type;

        /* internal data */

        struct list_head rports;

        struct list_head rport_bindings;

        struct list_head vports;

        u32 next_rport_number;

        u32 next_target_id;

        u32 next_vport_number;

        u16 npiv_vports_inuse;

        /* work queues for rport state manipulation */

        char work_q_name[KOBJ_NAME_LEN];

        struct workqueue_struct *work_q;

        char devloss_work_q_name[KOBJ_NAME_LEN];

        struct workqueue_struct *devloss_work_q;

};

#define shost_to_fc_host(x) \

        ((struct fc_host_attrs *)(x)->shost_data)

#define fc_host_node_name(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->node_name)

#define fc_host_port_name(x)    \

        (((struct fc_host_attrs *)(x)->shost_data)->port_name)

#define fc_host_permanent_port_name(x)  \

        (((struct fc_host_attrs *)(x)->shost_data)->permanent_port_name)

#define fc_host_supported_classes(x)    \

        (((struct fc_host_attrs *)(x)->shost_data)->supported_classes)

#define fc_host_supported_fc4s(x)       \

        (((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s)

#define fc_host_supported_speeds(x)     \

        (((struct fc_host_attrs *)(x)->shost_data)->supported_speeds)

#define fc_host_maxframe_size(x)        \

        (((struct fc_host_attrs *)(x)->shost_data)->maxframe_size)

#define fc_host_max_npiv_vports(x)      \

        (((struct fc_host_attrs *)(x)->shost_data)->max_npiv_vports)

#define fc_host_serial_number(x)        \

        (((struct fc_host_attrs *)(x)->shost_data)->serial_number)

#define fc_host_port_id(x)      \

        (((struct fc_host_attrs *)(x)->shost_data)->port_id)

#define fc_host_port_type(x)    \

        (((struct fc_host_attrs *)(x)->shost_data)->port_type)

#define fc_host_port_state(x)   \

        (((struct fc_host_attrs *)(x)->shost_data)->port_state)

#define fc_host_active_fc4s(x)  \

        (((struct fc_host_attrs *)(x)->shost_data)->active_fc4s)

#define fc_host_speed(x)        \

        (((struct fc_host_attrs *)(x)->shost_data)->speed)

#define fc_host_fabric_name(x)  \

        (((struct fc_host_attrs *)(x)->shost_data)->fabric_name)

#define fc_host_symbolic_name(x)        \

        (((struct fc_host_attrs *)(x)->shost_data)->symbolic_name)

#define fc_host_system_hostname(x)      \

        (((struct fc_host_attrs *)(x)->shost_data)->system_hostname)

#define fc_host_tgtid_bind_type(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type)

#define fc_host_rports(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->rports)

#define fc_host_rport_bindings(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->rport_bindings)

#define fc_host_vports(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->vports)

#define fc_host_next_rport_number(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->next_rport_number)

#define fc_host_next_target_id(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->next_target_id)

#define fc_host_next_vport_number(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->next_vport_number)

#define fc_host_npiv_vports_inuse(x)    \

        (((struct fc_host_attrs *)(x)->shost_data)->npiv_vports_inuse)

#define fc_host_work_q_name(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->work_q_name)

#define fc_host_work_q(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->work_q)

#define fc_host_devloss_work_q_name(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q_name)

#define fc_host_devloss_work_q(x) \

        (((struct fc_host_attrs *)(x)->shost_data)->devloss_work_q)

/* The functions by which the transport class and the driver communicate */

struct fc_function_template {

        void    (*get_rport_dev_loss_tmo)(struct fc_rport *);

        void    (*set_rport_dev_loss_tmo)(struct fc_rport *, u32);

        void    (*get_starget_node_name)(struct scsi_target *);

        void    (*get_starget_port_name)(struct scsi_target *);

        void    (*get_starget_port_id)(struct scsi_target *);

        void    (*get_host_port_id)(struct Scsi_Host *);

        void    (*get_host_port_type)(struct Scsi_Host *);

        void    (*get_host_port_state)(struct Scsi_Host *);

        void    (*get_host_active_fc4s)(struct Scsi_Host *);

        void    (*get_host_speed)(struct Scsi_Host *);

        void    (*get_host_fabric_name)(struct Scsi_Host *);

        void    (*get_host_symbolic_name)(struct Scsi_Host *);

        void    (*set_host_system_hostname)(struct Scsi_Host *);

        struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);

        void    (*reset_fc_host_stats)(struct Scsi_Host *);

        int     (*issue_fc_host_lip)(struct Scsi_Host *);

        void    (*dev_loss_tmo_callbk)(struct fc_rport *);

        void    (*terminate_rport_io)(struct fc_rport *);

        void    (*set_vport_symbolic_name)(struct fc_vport *);

        int     (*vport_create)(struct fc_vport *, bool);

        int     (*vport_disable)(struct fc_vport *, bool);

        int     (*vport_delete)(struct fc_vport *);

        /* target-mode drivers' functions */

        int     (* tsk_mgmt_response)(struct Scsi_Host *, u64, u64, int);

        int     (* it_nexus_response)(struct Scsi_Host *, u64, int);

        /* allocation lengths for host-specific data */

        u32                             dd_fcrport_size;

        u32                             dd_fcvport_size;

        /*

         * The driver sets these to tell the transport class it

         * wants the attributes displayed in sysfs.  If the show_ flag

         * is not set, the attribute will be private to the transport

         * class

         */

        /* remote port fixed attributes */

        unsigned long   show_rport_maxframe_size:1;

        unsigned long   show_rport_supported_classes:1;

        unsigned long   show_rport_dev_loss_tmo:1;

        /*

         * target dynamic attributes

         * These should all be "1" if the driver uses the remote port

         * add/delete functions (so attributes reflect rport values).

         */

        unsigned long   show_starget_node_name:1;

        unsigned long   show_starget_port_name:1;

        unsigned long   show_starget_port_id:1;

        /* host fixed attributes */

        unsigned long   show_host_node_name:1;

        unsigned long   show_host_port_name:1;

        unsigned long   show_host_permanent_port_name:1;

        unsigned long   show_host_supported_classes:1;

        unsigned long   show_host_supported_fc4s:1;

        unsigned long   show_host_supported_speeds:1;

        unsigned long   show_host_maxframe_size:1;

        unsigned long   show_host_serial_number:1;

        /* host dynamic attributes */

        unsigned long   show_host_port_id:1;

        unsigned long   show_host_port_type:1;

        unsigned long   show_host_port_state:1;

        unsigned long   show_host_active_fc4s:1;

        unsigned long   show_host_speed:1;

        unsigned long   show_host_fabric_name:1;

        unsigned long   show_host_symbolic_name:1;

        unsigned long   show_host_system_hostname:1;

        unsigned long   disable_target_scan:1;

};

/**

 * fc_remote_port_chkready - called to validate the remote port state

 *   prior to initiating io to the port.

 *

 * Returns a scsi result code that can be returned by the LLDD.

 *

 * @rport:      remote port to be checked

 **/

static inline int

fc_remote_port_chkready(struct fc_rport *rport)

{

        int result;

        switch (rport->port_state) {

        case FC_PORTSTATE_ONLINE:

                if (rport->roles & FC_PORT_ROLE_FCP_TARGET)

                        result = 0;

                else if (rport->flags & FC_RPORT_DEVLOSS_PENDING)

                        result = DID_IMM_RETRY << 16;

                else

                        result = DID_NO_CONNECT << 16;

                break;

        case FC_PORTSTATE_BLOCKED:

                result = DID_IMM_RETRY << 16;

                break;

        default:

                result = DID_NO_CONNECT << 16;

                break;

        }

        return result;

}

static inline u64 wwn_to_u64(u8 *wwn)

{

        return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 |

            (u64)wwn[2] << 40 | (u64)wwn[3] << 32 |

            (u64)wwn[4] << 24 | (u64)wwn[5] << 16 |

            (u64)wwn[6] <<  8 | (u64)wwn[7];

}

static inline void u64_to_wwn(u64 inm, u8 *wwn)

{

        wwn[0] = (inm >> 56) & 0xff;

        wwn[1] = (inm >> 48) & 0xff;

        wwn[2] = (inm >> 40) & 0xff;

        wwn[3] = (inm >> 32) & 0xff;

        wwn[4] = (inm >> 24) & 0xff;

        wwn[5] = (inm >> 16) & 0xff;

        wwn[6] = (inm >> 8) & 0xff;

        wwn[7] = inm & 0xff;

}

/**

 * fc_vport_set_state() - called to set a vport's state. Saves the old state,

 *   excepting the transitory states of initializing and sending the ELS

 *   traffic to instantiate the vport on the link.

 *

 * Assumes the driver has surrounded this with the proper locking to ensure

 * a coherent state change.

 *

 * @vport:      virtual port whose state is changing

 * @new_state:  new state

 **/

static inline void

fc_vport_set_state(struct fc_vport *vport, enum fc_vport_state new_state)

{

        if ((new_state != FC_VPORT_UNKNOWN) &&

            (new_state != FC_VPORT_INITIALIZING))

                vport->vport_last_state = vport->vport_state;

        vport->vport_state = new_state;

}

struct scsi_transport_template *fc_attach_transport(

                        struct fc_function_template *);

void fc_release_transport(struct scsi_transport_template *);

void fc_remove_host(struct Scsi_Host *);

struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,

                        int channel, struct fc_rport_identifiers  *ids);