2005-04-16 16:20:36 -06:00
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/*
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* FiberChannel transport specific attributes exported to sysfs.
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*
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* Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* ========
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*
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* Copyright (C) 2004-2005 James Smart, Emulex Corporation
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* Rewrite for host, target, device, and remote port attributes,
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* statistics, and service functions...
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*
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*/
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#ifndef SCSI_TRANSPORT_FC_H
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#define SCSI_TRANSPORT_FC_H
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#include <linux/config.h>
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struct scsi_transport_template;
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/*
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* FC Port definitions - Following FC HBAAPI guidelines
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*
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* Note: Not all binary values for the different fields match HBAAPI.
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* Instead, we use densely packed ordinal values or enums.
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* We get away with this as we never present the actual binary values
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* externally. For sysfs, we always present the string that describes
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* the value. Thus, an admin doesn't need a magic HBAAPI decoder ring
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* to understand the values. The HBAAPI user-space library is free to
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* convert the strings into the HBAAPI-specified binary values.
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*
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* Note: Not all HBAAPI-defined values are contained in the definitions
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* below. Those not appropriate to an fc_host (e.g. FCP initiator) have
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* been removed.
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*/
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/*
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* fc_port_type: If you alter this, you also need to alter scsi_transport_fc.c
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* (for the ascii descriptions).
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*/
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enum fc_port_type {
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FC_PORTTYPE_UNKNOWN,
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FC_PORTTYPE_OTHER,
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FC_PORTTYPE_NOTPRESENT,
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FC_PORTTYPE_NPORT, /* Attached to FPort */
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FC_PORTTYPE_NLPORT, /* (Public) Loop w/ FLPort */
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FC_PORTTYPE_LPORT, /* (Private) Loop w/o FLPort */
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FC_PORTTYPE_PTP, /* Point to Point w/ another NPort */
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};
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/*
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* fc_port_state: If you alter this, you also need to alter scsi_transport_fc.c
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* (for the ascii descriptions).
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*/
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enum fc_port_state {
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FC_PORTSTATE_UNKNOWN,
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FC_PORTSTATE_NOTPRESENT,
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FC_PORTSTATE_ONLINE,
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FC_PORTSTATE_OFFLINE, /* User has taken Port Offline */
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FC_PORTSTATE_BLOCKED,
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FC_PORTSTATE_BYPASSED,
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FC_PORTSTATE_DIAGNOSTICS,
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FC_PORTSTATE_LINKDOWN,
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FC_PORTSTATE_ERROR,
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FC_PORTSTATE_LOOPBACK,
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};
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/*
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* FC Classes of Service
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* Note: values are not enumerated, as they can be "or'd" together
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* for reporting (e.g. report supported_classes). If you alter this list,
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* you also need to alter scsi_transport_fc.c (for the ascii descriptions).
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*/
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#define FC_COS_UNSPECIFIED 0
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#define FC_COS_CLASS1 2
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#define FC_COS_CLASS2 4
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#define FC_COS_CLASS3 8
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#define FC_COS_CLASS4 0x10
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#define FC_COS_CLASS6 0x40
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/*
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* FC Port Speeds
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* Note: values are not enumerated, as they can be "or'd" together
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* for reporting (e.g. report supported_speeds). If you alter this list,
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* you also need to alter scsi_transport_fc.c (for the ascii descriptions).
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*/
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#define FC_PORTSPEED_UNKNOWN 0 /* Unknown - transceiver
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incapable of reporting */
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#define FC_PORTSPEED_1GBIT 1
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#define FC_PORTSPEED_2GBIT 2
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2005-09-16 03:01:14 -06:00
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#define FC_PORTSPEED_4GBIT 4
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#define FC_PORTSPEED_10GBIT 8
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2005-04-16 16:20:36 -06:00
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#define FC_PORTSPEED_NOT_NEGOTIATED (1 << 15) /* Speed not established */
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/*
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* fc_tgtid_binding_type: If you alter this, you also need to alter
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* scsi_transport_fc.c (for the ascii descriptions).
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*/
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enum fc_tgtid_binding_type {
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FC_TGTID_BIND_NONE,
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FC_TGTID_BIND_BY_WWPN,
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FC_TGTID_BIND_BY_WWNN,
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FC_TGTID_BIND_BY_ID,
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};
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/*
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* FC Remote Port Roles
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* Note: values are not enumerated, as they can be "or'd" together
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* for reporting (e.g. report roles). If you alter this list,
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* you also need to alter scsi_transport_fc.c (for the ascii descriptions).
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*/
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#define FC_RPORT_ROLE_UNKNOWN 0x00
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#define FC_RPORT_ROLE_FCP_TARGET 0x01
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#define FC_RPORT_ROLE_FCP_INITIATOR 0x02
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#define FC_RPORT_ROLE_IP_PORT 0x04
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/*
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* fc_rport_identifiers: This set of data contains all elements
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* to uniquely identify a remote FC port. The driver uses this data
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* to report the existence of a remote FC port in the topology. Internally,
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* the transport uses this data for attributes and to manage consistent
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* target id bindings.
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*/
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struct fc_rport_identifiers {
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u64 node_name;
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u64 port_name;
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u32 port_id;
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u32 roles;
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};
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/* Macro for use in defining Remote Port attributes */
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#define FC_RPORT_ATTR(_name,_mode,_show,_store) \
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struct class_device_attribute class_device_attr_rport_##_name = \
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__ATTR(_name,_mode,_show,_store)
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/*
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* FC Remote Port Attributes
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*
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* This structure exists for each remote FC port that a LLDD notifies
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* the subsystem of. A remote FC port may or may not be a SCSI Target,
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* also be a SCSI initiator, IP endpoint, etc. As such, the remote
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* port is considered a separate entity, independent of "role" (such
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* as scsi target).
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*
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* --
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*
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* Attributes are based on HBAAPI V2.0 definitions. Only those
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* attributes that are determinable by the local port (aka Host)
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* are contained.
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*
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* Fixed attributes are not expected to change. The driver is
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* expected to set these values after successfully calling
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* fc_remote_port_add(). The transport fully manages all get functions
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* w/o driver interaction.
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*
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* Dynamic attributes are expected to change. The driver participates
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* in all get/set operations via functions provided by the driver.
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*
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* Private attributes are transport-managed values. They are fully
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* managed by the transport w/o driver interaction.
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*/
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struct fc_rport { /* aka fc_starget_attrs */
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/* Fixed Attributes */
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u32 maxframe_size;
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u32 supported_classes;
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/* Dynamic Attributes */
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u32 dev_loss_tmo; /* Remote Port loss timeout in seconds. */
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/* Private (Transport-managed) Attributes */
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u64 node_name;
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u64 port_name;
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u32 port_id;
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u32 roles;
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enum fc_port_state port_state; /* Will only be ONLINE or UNKNOWN */
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u32 scsi_target_id;
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/* exported data */
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void *dd_data; /* Used for driver-specific storage */
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/* internal data */
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unsigned int channel;
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u32 number;
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struct list_head peers;
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struct device dev;
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struct work_struct dev_loss_work;
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struct work_struct scan_work;
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} __attribute__((aligned(sizeof(unsigned long))));
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#define dev_to_rport(d) \
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container_of(d, struct fc_rport, dev)
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#define transport_class_to_rport(classdev) \
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dev_to_rport(classdev->dev)
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#define rport_to_shost(r) \
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dev_to_shost(r->dev.parent)
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/*
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* FC SCSI Target Attributes
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*
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* The SCSI Target is considered an extention of a remote port (as
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* a remote port can be more than a SCSI Target). Within the scsi
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* subsystem, we leave the Target as a separate entity. Doing so
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* provides backward compatibility with prior FC transport api's,
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* and lets remote ports be handled entirely within the FC transport
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* and independently from the scsi subsystem. The drawback is that
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* some data will be duplicated.
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*/
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struct fc_starget_attrs { /* aka fc_target_attrs */
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/* Dynamic Attributes */
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u64 node_name;
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u64 port_name;
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u32 port_id;
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};
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#define fc_starget_node_name(x) \
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(((struct fc_starget_attrs *)&(x)->starget_data)->node_name)
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#define fc_starget_port_name(x) \
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(((struct fc_starget_attrs *)&(x)->starget_data)->port_name)
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#define fc_starget_port_id(x) \
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(((struct fc_starget_attrs *)&(x)->starget_data)->port_id)
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#define starget_to_rport(s) \
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scsi_is_fc_rport(s->dev.parent) ? dev_to_rport(s->dev.parent) : NULL
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/*
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* FC Local Port (Host) Statistics
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*/
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/* FC Statistics - Following FC HBAAPI v2.0 guidelines */
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struct fc_host_statistics {
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/* port statistics */
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u64 seconds_since_last_reset;
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u64 tx_frames;
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u64 tx_words;
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u64 rx_frames;
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u64 rx_words;
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u64 lip_count;
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u64 nos_count;
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u64 error_frames;
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u64 dumped_frames;
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u64 link_failure_count;
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u64 loss_of_sync_count;
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u64 loss_of_signal_count;
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u64 prim_seq_protocol_err_count;
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u64 invalid_tx_word_count;
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u64 invalid_crc_count;
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/* fc4 statistics (only FCP supported currently) */
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u64 fcp_input_requests;
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u64 fcp_output_requests;
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u64 fcp_control_requests;
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u64 fcp_input_megabytes;
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u64 fcp_output_megabytes;
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};
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/*
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* FC Local Port (Host) Attributes
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*
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* Attributes are based on HBAAPI V2.0 definitions.
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* Note: OSDeviceName is determined by user-space library
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*
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* Fixed attributes are not expected to change. The driver is
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* expected to set these values after successfully calling scsi_add_host().
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* The transport fully manages all get functions w/o driver interaction.
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*
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* Dynamic attributes are expected to change. The driver participates
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* in all get/set operations via functions provided by the driver.
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*
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* Private attributes are transport-managed values. They are fully
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* managed by the transport w/o driver interaction.
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*/
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#define FC_FC4_LIST_SIZE 32
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#define FC_SYMBOLIC_NAME_SIZE 256
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#define FC_VERSION_STRING_SIZE 64
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#define FC_SERIAL_NUMBER_SIZE 80
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struct fc_host_attrs {
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/* Fixed Attributes */
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u64 node_name;
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u64 port_name;
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u32 supported_classes;
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u8 supported_fc4s[FC_FC4_LIST_SIZE];
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char symbolic_name[FC_SYMBOLIC_NAME_SIZE];
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u32 supported_speeds;
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u32 maxframe_size;
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char serial_number[FC_SERIAL_NUMBER_SIZE];
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/* Dynamic Attributes */
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u32 port_id;
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enum fc_port_type port_type;
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enum fc_port_state port_state;
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u8 active_fc4s[FC_FC4_LIST_SIZE];
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u32 speed;
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u64 fabric_name;
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/* Private (Transport-managed) Attributes */
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enum fc_tgtid_binding_type tgtid_bind_type;
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/* internal data */
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struct list_head rports;
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struct list_head rport_bindings;
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u32 next_rport_number;
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u32 next_target_id;
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};
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#define fc_host_node_name(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->node_name)
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#define fc_host_port_name(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->port_name)
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#define fc_host_supported_classes(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->supported_classes)
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#define fc_host_supported_fc4s(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->supported_fc4s)
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#define fc_host_symbolic_name(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->symbolic_name)
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#define fc_host_supported_speeds(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->supported_speeds)
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#define fc_host_maxframe_size(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->maxframe_size)
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#define fc_host_serial_number(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->serial_number)
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#define fc_host_port_id(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->port_id)
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#define fc_host_port_type(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->port_type)
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#define fc_host_port_state(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->port_state)
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#define fc_host_active_fc4s(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->active_fc4s)
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#define fc_host_speed(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->speed)
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#define fc_host_fabric_name(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->fabric_name)
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#define fc_host_tgtid_bind_type(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->tgtid_bind_type)
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#define fc_host_rports(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->rports)
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#define fc_host_rport_bindings(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->rport_bindings)
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#define fc_host_next_rport_number(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->next_rport_number)
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#define fc_host_next_target_id(x) \
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(((struct fc_host_attrs *)(x)->shost_data)->next_target_id)
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/* The functions by which the transport class and the driver communicate */
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struct fc_function_template {
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void (*get_rport_dev_loss_tmo)(struct fc_rport *);
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void (*set_rport_dev_loss_tmo)(struct fc_rport *, u32);
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void (*get_starget_node_name)(struct scsi_target *);
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void (*get_starget_port_name)(struct scsi_target *);
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void (*get_starget_port_id)(struct scsi_target *);
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void (*get_host_port_id)(struct Scsi_Host *);
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void (*get_host_port_type)(struct Scsi_Host *);
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void (*get_host_port_state)(struct Scsi_Host *);
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void (*get_host_active_fc4s)(struct Scsi_Host *);
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void (*get_host_speed)(struct Scsi_Host *);
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void (*get_host_fabric_name)(struct Scsi_Host *);
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struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
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void (*reset_fc_host_stats)(struct Scsi_Host *);
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/* allocation lengths for host-specific data */
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u32 dd_fcrport_size;
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/*
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* The driver sets these to tell the transport class it
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* wants the attributes displayed in sysfs. If the show_ flag
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* is not set, the attribute will be private to the transport
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* class
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*/
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/* remote port fixed attributes */
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unsigned long show_rport_maxframe_size:1;
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unsigned long show_rport_supported_classes:1;
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unsigned long show_rport_dev_loss_tmo:1;
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/*
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* target dynamic attributes
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* These should all be "1" if the driver uses the remote port
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* add/delete functions (so attributes reflect rport values).
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*/
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unsigned long show_starget_node_name:1;
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unsigned long show_starget_port_name:1;
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unsigned long show_starget_port_id:1;
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/* host fixed attributes */
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unsigned long show_host_node_name:1;
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unsigned long show_host_port_name:1;
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unsigned long show_host_supported_classes:1;
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unsigned long show_host_supported_fc4s:1;
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unsigned long show_host_symbolic_name:1;
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unsigned long show_host_supported_speeds:1;
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unsigned long show_host_maxframe_size:1;
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unsigned long show_host_serial_number:1;
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/* host dynamic attributes */
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unsigned long show_host_port_id:1;
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unsigned long show_host_port_type:1;
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|
unsigned long show_host_port_state:1;
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|
unsigned long show_host_active_fc4s:1;
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unsigned long show_host_speed:1;
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|
unsigned long show_host_fabric_name:1;
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};
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struct scsi_transport_template *fc_attach_transport(
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|
struct fc_function_template *);
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void fc_release_transport(struct scsi_transport_template *);
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void fc_remove_host(struct Scsi_Host *);
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|
|
struct fc_rport *fc_remote_port_add(struct Scsi_Host *shost,
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|
|
|
int channel, struct fc_rport_identifiers *ids);
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|
|
|
void fc_remote_port_delete(struct fc_rport *rport);
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|
void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles);
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|
|
int fc_remote_port_block(struct fc_rport *rport);
|
|
|
|
void fc_remote_port_unblock(struct fc_rport *rport);
|
|
|
|
int scsi_is_fc_rport(const struct device *);
|
|
|
|
|
2005-08-31 16:18:35 -06:00
|
|
|
static inline u64 wwn_to_u64(u8 *wwn)
|
|
|
|
{
|
|
|
|
return (u64)wwn[0] << 56 | (u64)wwn[1] << 48 |
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|
(u64)wwn[2] << 40 | (u64)wwn[3] << 32 |
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|
(u64)wwn[4] << 24 | (u64)wwn[5] << 16 |
|
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|
|
(u64)wwn[6] << 8 | (u64)wwn[7];
|
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|
|
}
|
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|
|
|
2005-04-16 16:20:36 -06:00
|
|
|
#endif /* SCSI_TRANSPORT_FC_H */
|