OSCL-LXR linux-6.0.1/​include/​scsi/​scsi_transport_fc.h	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  *  FiberChannel transport specific attributes exported to sysfs.
  *
  *  Copyright (c) 2003 Silicon Graphics, Inc.  All rights reserved.
  *  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 <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;
 
 /*
  * 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_PORTSTATE_MARGINAL,
 };
 
 
 /*
  * 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_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) /* 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
 #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
 
 /* 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 device_attribute dev_attr_vport_##_name =    \
     __ATTR(_name,_mode,_show,_store)
 
 /*
  * fc_vport_identifiers: This set of data contains all elements
  * to uniquely identify and instantiate a FC virtual port.
  *
  * Notes:
  *   symbolic_name: The driver is to append the symbolic_name string data
  *      to the symbolic_node_name data that it generates by default.
  *      the resulting combination should then be registered with the switch.
  *      It is expected that things like Xen may stuff a VM title into
  *      this field.
  */
 #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;   /* only FC_PORTTYPE_NPIV allowed */
     char symbolic_name[FC_VPORT_SYMBOLIC_NAMELEN];
 };
 
 /*
  * 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 presence on the SAN, and may be instantiated via
  * NPIV, Virtual Fabrics, or via additional ALPAs. As the vport is a
  * unique presence, each vport has it's own view of the fabric,
  * authentication privilege, 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.
  */
 
 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(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)
 
 
 /* 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;
 };
 
 /*
  * Fabric Performance Impact Notification Statistics
  */
 struct fc_fpin_stats {
     /* Delivery */
     u64 dn;
     u64 dn_unknown;
     u64 dn_timeout;
     u64 dn_unable_to_route;
     u64 dn_device_specific;
 
     /* Link Integrity */
     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;
 
     /* Congestion/Peer Congestion */
     u64 cn;
     u64 cn_clear;
     u64 cn_lost_credit;
     u64 cn_credit_stall;
     u64 cn_oversubscription;
     u64 cn_device_specific;
 };
 
 /* Macro for use in defining Remote Port attributes */
 #define FC_RPORT_ATTR(_name,_mode,_show,_store)             \
 struct device_attribute dev_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. */
     struct fc_fpin_stats fpin_stats;
 
     /* 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;
     struct request_queue *rqst_q;   /* bsg support */
 } __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 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)
 
 /*
  * FC SCSI Target Attributes
  *
  * The SCSI Target is considered an extension 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;
     u64 fcp_packet_alloc_failures;  /* fcp packet allocation failures */
     u64 fcp_packet_aborts;      /* fcp packet aborted */
     u64 fcp_frame_alloc_failures;   /* fcp frame allocation failures */
 
     /* fc exches statistics */
     u64 fc_no_free_exch;        /* no free exch memory */
     u64 fc_no_free_exch_xid;    /* no free exch id */
     u64 fc_xid_not_found;       /* exch not found for a response */
     u64 fc_xid_busy;        /* exch exist for new a request */
     u64 fc_seq_not_found;       /* seq is not found for exchange */
     u64 fc_non_bls_resp;        /* a non BLS response frame with
                        a sequence responder in new exch */
     /* Host Congestion Signals */
     u64 cn_sig_warn;
     u64 cn_sig_alarm;
 };
 
 
 /*
  * 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_LINK_FPIN       = 0x501,
     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_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 {
     /* 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;
     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];
 
 
     /* 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];
     u32 dev_loss_tmo;
     struct fc_fpin_stats fpin_stats;
 
     /* 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[20];
     struct workqueue_struct *work_q;
     char devloss_work_q_name[20];
     struct workqueue_struct *devloss_work_q;
 
     /* bsg support */
     struct request_queue *rqst_q;
 
     /* FDMI support version*/
     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)
 
 /* 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 *);
 
     /* bsg support */
     int (*bsg_request)(struct bsg_job *);
     int (*bsg_timeout)(struct bsg_job *);
 
     /* allocation lengths for host-specific data */
     u32             dd_fcrport_size;
     u32             dd_fcvport_size;
     u32             dd_bsg_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;
     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;
     /* 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:
     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);
 }
 
 /**
  * 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);
 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);
     /* Note: when specifying vendor_id to fc_host_post_vendor_event()
      *   or fc_host_post_fc_event(), be sure to read the Vendor Type
      *   and ID formatting requirements specified in scsi_netlink.h
      * Note: when calling fc_host_post_fc_event(), vendor_id may be
      *   specified as 0.
      */
 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 /* SCSI_TRANSPORT_FC_H */

This page was automatically generated by the 2.1.0 LXR engine. The LXR team