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Edit File: scsi_transport_fc.h

/* 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 */