/* SPDX-License-Identifier: GPL-2.0-or-later */

#ifndef SCSI_TRANSPORT_FC_H
#define SCSI_TRANSPORT_FC_H

#include <linux/sched.h>
#include <linux/bsg-lib.h>
#include <asm/unaligned.h>
#include <scsi/scsi.h>
#include <scsi/scsi_netlink.h>
#include <scsi/scsi_host.h>

struct scsi_transport_template;




enum fc_port_type {
	FC_PORTTYPE_UNKNOWN,
	FC_PORTTYPE_OTHER,
	FC_PORTTYPE_NOTPRESENT,
	FC_PORTTYPE_NPORT,		
	FC_PORTTYPE_NLPORT,		
	FC_PORTTYPE_LPORT,		
	FC_PORTTYPE_PTP,		
	FC_PORTTYPE_NPIV,		
};



enum fc_port_state {
	FC_PORTSTATE_UNKNOWN,
	FC_PORTSTATE_NOTPRESENT,
	FC_PORTSTATE_ONLINE,
	FC_PORTSTATE_OFFLINE,		
	FC_PORTSTATE_BLOCKED,
	FC_PORTSTATE_BYPASSED,
	FC_PORTSTATE_DIAGNOSTICS,
	FC_PORTSTATE_LINKDOWN,
	FC_PORTSTATE_ERROR,
	FC_PORTSTATE_LOOPBACK,
	FC_PORTSTATE_DELETED,
	FC_PORTSTATE_MARGINAL,
};



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,
};




#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


#define FC_PORTSPEED_UNKNOWN		0 
#define FC_PORTSPEED_1GBIT		1
#define FC_PORTSPEED_2GBIT		2
#define FC_PORTSPEED_10GBIT		4
#define FC_PORTSPEED_4GBIT		8
#define FC_PORTSPEED_8GBIT		0x10
#define FC_PORTSPEED_16GBIT		0x20
#define FC_PORTSPEED_32GBIT		0x40
#define FC_PORTSPEED_20GBIT		0x80
#define FC_PORTSPEED_40GBIT		0x100
#define FC_PORTSPEED_50GBIT		0x200
#define FC_PORTSPEED_100GBIT		0x400
#define FC_PORTSPEED_25GBIT		0x800
#define FC_PORTSPEED_64GBIT		0x1000
#define FC_PORTSPEED_128GBIT		0x2000
#define FC_PORTSPEED_256GBIT		0x4000
#define FC_PORTSPEED_NOT_NEGOTIATED	(1 << 15) 


enum fc_tgtid_binding_type  {
	FC_TGTID_BIND_NONE,
	FC_TGTID_BIND_BY_WWPN,
	FC_TGTID_BIND_BY_WWNN,
	FC_TGTID_BIND_BY_ID,
};


#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
#define FC_PORT_ROLE_FCP_DUMMY_INITIATOR	0x08
#define FC_PORT_ROLE_NVME_INITIATOR		0x10
#define FC_PORT_ROLE_NVME_TARGET		0x20
#define FC_PORT_ROLE_NVME_DISCOVERY		0x40


#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



#define FC_VPORT_ATTR(_name,_mode,_show,_store)		\
struct device_attribute dev_attr_vport_##_name = 	\
	__ATTR(_name,_mode,_show,_store)


#define FC_VPORT_SYMBOLIC_NAMELEN		64
struct fc_vport_identifiers {
	u64 node_name;
	u64 port_name;
	u32 roles;
	bool disable;
	enum fc_port_type vport_type;	
	char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
};



struct fc_vport {
	

	

	
	enum fc_vport_state vport_state;
	enum fc_vport_state vport_last_state;
	u64 node_name;
	u64 port_name;
	u32 roles;
	u32 vport_id;		
	enum fc_port_type vport_type;
	char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];

	
	void *dd_data;			

	
	struct Scsi_Host *shost;	
	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))));


#define FC_VPORT_CREATING		0x01
#define FC_VPORT_DELETING		0x02
#define FC_VPORT_DELETED		0x04
#define FC_VPORT_DEL			0x06	

#define	dev_to_vport(d)				\
	container_of(d, struct fc_vport, dev)
#define transport_class_to_vport(dev)		\
	dev_to_vport(dev->parent)
#define vport_to_shost(v)			\
	(v->shost)
#define vport_to_shost_channel(v)		\
	(v->channel)
#define vport_to_parent(v)			\
	(v->dev.parent)



#define VPCERR_UNSUPPORTED		-ENOSYS		
#define VPCERR_BAD_WWN			-ENOTUNIQ	
#define VPCERR_NO_FABRIC_SUPP		-EOPNOTSUPP	


struct fc_rport_identifiers {
	u64 node_name;
	u64 port_name;
	u32 port_id;
	u32 roles;
};


struct fc_fpin_stats {
	
	u64 dn;
	u64 dn_unknown;
	u64 dn_timeout;
	u64 dn_unable_to_route;
	u64 dn_device_specific;

	
	u64 li;
	u64 li_failure_unknown;
	u64 li_link_failure_count;
	u64 li_loss_of_sync_count;
	u64 li_loss_of_signals_count;
	u64 li_prim_seq_err_count;
	u64 li_invalid_tx_word_count;
	u64 li_invalid_crc_count;
	u64 li_device_specific;

	
	u64 cn;
	u64 cn_clear;
	u64 cn_lost_credit;
	u64 cn_credit_stall;
	u64 cn_oversubscription;
	u64 cn_device_specific;
};


#define FC_RPORT_ATTR(_name,_mode,_show,_store)				\
struct device_attribute dev_attr_rport_##_name = 	\
	__ATTR(_name,_mode,_show,_store)




struct fc_rport {	
	
	u32 maxframe_size;
	u32 supported_classes;

	
	u32 dev_loss_tmo;	
	struct fc_fpin_stats fpin_stats;

	
	u64 node_name;
	u64 port_name;
	u32 port_id;
	u32 roles;
	enum fc_port_state port_state;	
	u32 scsi_target_id;
	u32 fast_io_fail_tmo;

	
	void *dd_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;
	struct request_queue *rqst_q;	
} __attribute__((aligned(sizeof(unsigned long))));


#define FC_RPORT_DEVLOSS_PENDING	0x01
#define FC_RPORT_SCAN_PENDING		0x02
#define FC_RPORT_FAST_FAIL_TIMEDOUT	0x04
#define FC_RPORT_DEVLOSS_CALLBK_DONE	0x08

#define	dev_to_rport(d)				\
	container_of(d, struct fc_rport, dev)
#define transport_class_to_rport(dev)	\
	dev_to_rport(dev->parent)
#define rport_to_shost(r)			\
	dev_to_shost(r->dev.parent)



struct fc_starget_attrs {	
	
	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





struct fc_host_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;

	
	u64 fcp_input_requests;
	u64 fcp_output_requests;
	u64 fcp_control_requests;
	u64 fcp_input_megabytes;
	u64 fcp_output_megabytes;
	u64 fcp_packet_alloc_failures;	
	u64 fcp_packet_aborts;		
	u64 fcp_frame_alloc_failures;	

	
	u64 fc_no_free_exch;		
	u64 fc_no_free_exch_xid;	
	u64 fc_xid_not_found;		
	u64 fc_xid_busy;		
	u64 fc_seq_not_found;		
	u64 fc_non_bls_resp;		
	
	u64 cn_sig_warn;
	u64 cn_sig_alarm;
};





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_LINK_FPIN		= 0x501,
	FCH_EVT_VENDOR_UNIQUE		= 0xffff,
};




#define FC_VENDOR_IDENTIFIER		8
#define FC_FC4_LIST_SIZE		32
#define FC_SYMBOLIC_NAME_SIZE		256
#define FC_VERSION_STRING_SIZE		64
#define FC_SERIAL_NUMBER_SIZE		64

struct fc_host_attrs {
	
	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;
	u32 max_ct_payload;
	u32 num_ports;
	u32 num_discovered_ports;
	u32 bootbios_state;
	char serial_number[FC_SERIAL_NUMBER_SIZE];
	char manufacturer[FC_SERIAL_NUMBER_SIZE];
	char model[FC_SYMBOLIC_NAME_SIZE];
	char model_description[FC_SYMBOLIC_NAME_SIZE];
	char hardware_version[FC_VERSION_STRING_SIZE];
	char driver_version[FC_VERSION_STRING_SIZE];
	char firmware_version[FC_VERSION_STRING_SIZE];
	char optionrom_version[FC_VERSION_STRING_SIZE];
	char vendor_identifier[FC_VENDOR_IDENTIFIER];
	char bootbios_version[FC_SYMBOLIC_NAME_SIZE];


	
	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];
	u32 dev_loss_tmo;
	struct fc_fpin_stats fpin_stats;

	
	enum fc_tgtid_binding_type  tgtid_bind_type;

	
	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;

	
	char work_q_name[20];
	struct workqueue_struct *work_q;
	char devloss_work_q_name[20];
	struct workqueue_struct *devloss_work_q;

	
	struct request_queue *rqst_q;

	
	u8 fdmi_version;
};

#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_manufacturer(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->manufacturer)
#define fc_host_model(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->model)
#define fc_host_model_description(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->model_description)
#define fc_host_hardware_version(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->hardware_version)
#define fc_host_driver_version(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->driver_version)
#define fc_host_firmware_version(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->firmware_version)
#define fc_host_optionrom_version(x)	\
	(((struct fc_host_attrs *)(x)->shost_data)->optionrom_version)
#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)
#define fc_host_dev_loss_tmo(x) \
	(((struct fc_host_attrs *)(x)->shost_data)->dev_loss_tmo)
#define fc_host_max_ct_payload(x)  \
	(((struct fc_host_attrs *)(x)->shost_data)->max_ct_payload)
#define fc_host_vendor_identifier(x)  \
	(((struct fc_host_attrs *)(x)->shost_data)->vendor_identifier)
#define fc_host_num_discovered_ports(x)  \
	(((struct fc_host_attrs *)(x)->shost_data)->num_discovered_ports)
#define fc_host_num_ports(x)  \
	(((struct fc_host_attrs *)(x)->shost_data)->num_ports)
#define fc_host_bootbios_version(x)  \
	(((struct fc_host_attrs *)(x)->shost_data)->bootbios_version)
#define fc_host_bootbios_state(x)  \
	(((struct fc_host_attrs *)(x)->shost_data)->bootbios_state)


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 *);

	
	int	(*bsg_request)(struct bsg_job *);
	int	(*bsg_timeout)(struct bsg_job *);

	
	u32	 			dd_fcrport_size;
	u32	 			dd_fcvport_size;
	u32				dd_bsg_size;

	

	
	unsigned long	show_rport_maxframe_size:1;
	unsigned long	show_rport_supported_classes:1;
	unsigned long   show_rport_dev_loss_tmo:1;

	
	unsigned long	show_starget_node_name:1;
	unsigned long	show_starget_port_name:1;
	unsigned long	show_starget_port_id:1;

	
	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;
	unsigned long	show_host_manufacturer:1;
	unsigned long	show_host_model:1;
	unsigned long	show_host_model_description:1;
	unsigned long	show_host_hardware_version:1;
	unsigned long	show_host_driver_version:1;
	unsigned long	show_host_firmware_version:1;
	unsigned long	show_host_optionrom_version:1;
	
	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;
};


static inline int
fc_remote_port_chkready(struct fc_rport *rport)
{
	int result;

	switch (rport->port_state) {
	case FC_PORTSTATE_ONLINE:
	case FC_PORTSTATE_MARGINAL:
		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:
		if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)
			result = DID_TRANSPORT_FAILFAST << 16;
		else
			result = DID_IMM_RETRY << 16;
		break;
	default:
		result = DID_NO_CONNECT << 16;
		break;
	}
	return result;
}

static inline u64 wwn_to_u64(const u8 *wwn)
{
	return get_unaligned_be64(wwn);
}

static inline void u64_to_wwn(u64 inm, u8 *wwn)
{
	put_unaligned_be64(inm, wwn);
}


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);
void fc_remote_port_delete(struct fc_rport  *rport);
void fc_remote_port_rolechg(struct fc_rport  *rport, u32 roles);
int scsi_is_fc_rport(const struct device *);
u32 fc_get_event_number(void);
void fc_host_post_event(struct Scsi_Host *shost, u32 event_number,
		enum fc_host_event_code event_code, u32 event_data);
void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number,
		u32 data_len, char *data_buf, u64 vendor_id);
struct fc_rport *fc_find_rport_by_wwpn(struct Scsi_Host *shost, u64 wwpn);
void fc_host_post_fc_event(struct Scsi_Host *shost, u32 event_number,
		enum fc_host_event_code event_code,
		u32 data_len, char *data_buf, u64 vendor_id);
	
void fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf);
struct fc_vport *fc_vport_create(struct Scsi_Host *shost, int channel,
		struct fc_vport_identifiers *);
int fc_vport_terminate(struct fc_vport *vport);
int fc_block_rport(struct fc_rport *rport);
int fc_block_scsi_eh(struct scsi_cmnd *cmnd);
enum blk_eh_timer_return fc_eh_timed_out(struct scsi_cmnd *scmd);
bool fc_eh_should_retry_cmd(struct scsi_cmnd *scmd);

static inline struct Scsi_Host *fc_bsg_to_shost(struct bsg_job *job)
{
	if (scsi_is_host_device(job->dev))
		return dev_to_shost(job->dev);
	return rport_to_shost(dev_to_rport(job->dev));
}

static inline struct fc_rport *fc_bsg_to_rport(struct bsg_job *job)
{
	if (scsi_is_fc_rport(job->dev))
		return dev_to_rport(job->dev);
	return NULL;
}

#endif 
