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drivers/scsi/scsi_transport_fc.c
120 KB
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/* |
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* FiberChannel transport specific attributes exported to sysfs. * * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * * ======== * |
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* Copyright (C) 2004-2007 James Smart, Emulex Corporation |
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* Rewrite for host, target, device, and remote port attributes, * statistics, and service functions... |
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* Add vports, etc |
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* */ #include <linux/module.h> #include <linux/init.h> |
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#include <linux/slab.h> |
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#include <linux/delay.h> |
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#include <linux/kernel.h> |
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#include <scsi/scsi_device.h> #include <scsi/scsi_host.h> #include <scsi/scsi_transport.h> #include <scsi/scsi_transport_fc.h> |
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#include <scsi/scsi_cmnd.h> |
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#include <linux/netlink.h> #include <net/netlink.h> #include <scsi/scsi_netlink_fc.h> |
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#include <scsi/scsi_bsg_fc.h> |
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#include "scsi_priv.h" |
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#include "scsi_transport_fc_internal.h" |
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static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
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static void fc_vport_sched_delete(struct work_struct *work); |
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static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
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struct device *pdev, struct fc_vport_identifiers *ids, struct fc_vport **vport); |
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static int fc_bsg_hostadd(struct Scsi_Host *, struct fc_host_attrs *); static int fc_bsg_rportadd(struct Scsi_Host *, struct fc_rport *); static void fc_bsg_remove(struct request_queue *); static void fc_bsg_goose_queue(struct fc_rport *); |
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/* |
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* Module Parameters */ /* * dev_loss_tmo: the default number of seconds that the FC transport * should insulate the loss of a remote port. * The maximum will be capped by the value of SCSI_DEVICE_BLOCK_MAX_TIMEOUT. */ static unsigned int fc_dev_loss_tmo = 60; /* seconds */ module_param_named(dev_loss_tmo, fc_dev_loss_tmo, uint, S_IRUGO|S_IWUSR); MODULE_PARM_DESC(dev_loss_tmo, "Maximum number of seconds that the FC transport should" " insulate the loss of a remote port. Once this value is" " exceeded, the scsi target is removed. Value should be" " between 1 and SCSI_DEVICE_BLOCK_MAX_TIMEOUT if" " fast_io_fail_tmo is not set."); /* |
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* Redefine so that we can have same named attributes in the * sdev/starget/host objects. */ |
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#define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ struct device_attribute device_attr_##_prefix##_##_name = \ |
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__ATTR(_name,_mode,_show,_store) #define fc_enum_name_search(title, table_type, table) \ static const char *get_fc_##title##_name(enum table_type table_key) \ { \ int i; \ char *name = NULL; \ \ |
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for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
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if (table[i].value == table_key) { \ name = table[i].name; \ break; \ } \ } \ return name; \ } #define fc_enum_name_match(title, table_type, table) \ static int get_fc_##title##_match(const char *table_key, \ enum table_type *value) \ { \ int i; \ \ |
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for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
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if (strncmp(table_key, table[i].name, \ table[i].matchlen) == 0) { \ *value = table[i].value; \ return 0; /* success */ \ } \ } \ return 1; /* failure */ \ } /* Convert fc_port_type values to ascii string name */ static struct { enum fc_port_type value; char *name; } fc_port_type_names[] = { { FC_PORTTYPE_UNKNOWN, "Unknown" }, { FC_PORTTYPE_OTHER, "Other" }, { FC_PORTTYPE_NOTPRESENT, "Not Present" }, { FC_PORTTYPE_NPORT, "NPort (fabric via point-to-point)" }, { FC_PORTTYPE_NLPORT, "NLPort (fabric via loop)" }, { FC_PORTTYPE_LPORT, "LPort (private loop)" }, |
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{ FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
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{ FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
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}; fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) #define FC_PORTTYPE_MAX_NAMELEN 50 |
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/* Reuse fc_port_type enum function for vport_type */ #define get_fc_vport_type_name get_fc_port_type_name |
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/* Convert fc_host_event_code values to ascii string name */ static const struct { enum fc_host_event_code value; char *name; } fc_host_event_code_names[] = { { FCH_EVT_LIP, "lip" }, { FCH_EVT_LINKUP, "link_up" }, { FCH_EVT_LINKDOWN, "link_down" }, { FCH_EVT_LIPRESET, "lip_reset" }, { FCH_EVT_RSCN, "rscn" }, { FCH_EVT_ADAPTER_CHANGE, "adapter_chg" }, { FCH_EVT_PORT_UNKNOWN, "port_unknown" }, { FCH_EVT_PORT_ONLINE, "port_online" }, { FCH_EVT_PORT_OFFLINE, "port_offline" }, { FCH_EVT_PORT_FABRIC, "port_fabric" }, { FCH_EVT_LINK_UNKNOWN, "link_unknown" }, { FCH_EVT_VENDOR_UNIQUE, "vendor_unique" }, }; fc_enum_name_search(host_event_code, fc_host_event_code, fc_host_event_code_names) #define FC_HOST_EVENT_CODE_MAX_NAMELEN 30 |
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/* Convert fc_port_state values to ascii string name */ static struct { enum fc_port_state value; char *name; } fc_port_state_names[] = { { FC_PORTSTATE_UNKNOWN, "Unknown" }, { FC_PORTSTATE_NOTPRESENT, "Not Present" }, { FC_PORTSTATE_ONLINE, "Online" }, { FC_PORTSTATE_OFFLINE, "Offline" }, { FC_PORTSTATE_BLOCKED, "Blocked" }, { FC_PORTSTATE_BYPASSED, "Bypassed" }, { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics" }, { FC_PORTSTATE_LINKDOWN, "Linkdown" }, { FC_PORTSTATE_ERROR, "Error" }, { FC_PORTSTATE_LOOPBACK, "Loopback" }, |
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{ FC_PORTSTATE_DELETED, "Deleted" }, |
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}; fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) #define FC_PORTSTATE_MAX_NAMELEN 20 |
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/* Convert fc_vport_state values to ascii string name */ static struct { enum fc_vport_state value; char *name; } fc_vport_state_names[] = { { FC_VPORT_UNKNOWN, "Unknown" }, { FC_VPORT_ACTIVE, "Active" }, { FC_VPORT_DISABLED, "Disabled" }, { FC_VPORT_LINKDOWN, "Linkdown" }, { FC_VPORT_INITIALIZING, "Initializing" }, { FC_VPORT_NO_FABRIC_SUPP, "No Fabric Support" }, { FC_VPORT_NO_FABRIC_RSCS, "No Fabric Resources" }, { FC_VPORT_FABRIC_LOGOUT, "Fabric Logout" }, { FC_VPORT_FABRIC_REJ_WWN, "Fabric Rejected WWN" }, { FC_VPORT_FAILED, "VPort Failed" }, }; fc_enum_name_search(vport_state, fc_vport_state, fc_vport_state_names) #define FC_VPORTSTATE_MAX_NAMELEN 24 /* Reuse fc_vport_state enum function for vport_last_state */ #define get_fc_vport_last_state_name get_fc_vport_state_name |
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/* Convert fc_tgtid_binding_type values to ascii string name */ |
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static const struct { |
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enum fc_tgtid_binding_type value; char *name; int matchlen; } fc_tgtid_binding_type_names[] = { { FC_TGTID_BIND_NONE, "none", 4 }, { FC_TGTID_BIND_BY_WWPN, "wwpn (World Wide Port Name)", 4 }, { FC_TGTID_BIND_BY_WWNN, "wwnn (World Wide Node Name)", 4 }, { FC_TGTID_BIND_BY_ID, "port_id (FC Address)", 7 }, }; fc_enum_name_search(tgtid_bind_type, fc_tgtid_binding_type, fc_tgtid_binding_type_names) fc_enum_name_match(tgtid_bind_type, fc_tgtid_binding_type, fc_tgtid_binding_type_names) #define FC_BINDTYPE_MAX_NAMELEN 30 #define fc_bitfield_name_search(title, table) \ static ssize_t \ get_fc_##title##_names(u32 table_key, char *buf) \ { \ char *prefix = ""; \ ssize_t len = 0; \ int i; \ \ |
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for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
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if (table[i].value & table_key) { \ len += sprintf(buf + len, "%s%s", \ prefix, table[i].name); \ prefix = ", "; \ } \ } \ len += sprintf(buf + len, " "); \ return len; \ } /* Convert FC_COS bit values to ascii string name */ |
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static const struct { |
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u32 value; char *name; } fc_cos_names[] = { { FC_COS_CLASS1, "Class 1" }, { FC_COS_CLASS2, "Class 2" }, { FC_COS_CLASS3, "Class 3" }, { FC_COS_CLASS4, "Class 4" }, { FC_COS_CLASS6, "Class 6" }, }; fc_bitfield_name_search(cos, fc_cos_names) /* Convert FC_PORTSPEED bit values to ascii string name */ |
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static const struct { |
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u32 value; char *name; } fc_port_speed_names[] = { { FC_PORTSPEED_1GBIT, "1 Gbit" }, { FC_PORTSPEED_2GBIT, "2 Gbit" }, { FC_PORTSPEED_4GBIT, "4 Gbit" }, { FC_PORTSPEED_10GBIT, "10 Gbit" }, |
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{ FC_PORTSPEED_8GBIT, "8 Gbit" }, { FC_PORTSPEED_16GBIT, "16 Gbit" }, |
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{ FC_PORTSPEED_NOT_NEGOTIATED, "Not Negotiated" }, }; fc_bitfield_name_search(port_speed, fc_port_speed_names) static int show_fc_fc4s (char *buf, u8 *fc4_list) { int i, len=0; for (i = 0; i < FC_FC4_LIST_SIZE; i++, fc4_list++) len += sprintf(buf + len , "0x%02x ", *fc4_list); len += sprintf(buf + len, " "); return len; } |
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/* Convert FC_PORT_ROLE bit values to ascii string name */ |
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static const struct { |
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u32 value; char *name; |
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} fc_port_role_names[] = { { FC_PORT_ROLE_FCP_TARGET, "FCP Target" }, { FC_PORT_ROLE_FCP_INITIATOR, "FCP Initiator" }, { FC_PORT_ROLE_IP_PORT, "IP Port" }, |
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}; |
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fc_bitfield_name_search(port_roles, fc_port_role_names) |
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/* * Define roles that are specific to port_id. Values are relative to ROLE_MASK. */ #define FC_WELLKNOWN_PORTID_MASK 0xfffff0 #define FC_WELLKNOWN_ROLE_MASK 0x00000f #define FC_FPORT_PORTID 0x00000e #define FC_FABCTLR_PORTID 0x00000d #define FC_DIRSRVR_PORTID 0x00000c #define FC_TIMESRVR_PORTID 0x00000b #define FC_MGMTSRVR_PORTID 0x00000a |
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static void fc_timeout_deleted_rport(struct work_struct *work); static void fc_timeout_fail_rport_io(struct work_struct *work); static void fc_scsi_scan_rport(struct work_struct *work); |
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/* * Attribute counts pre object type... * Increase these values if you add attributes */ #define FC_STARGET_NUM_ATTRS 3 |
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#define FC_RPORT_NUM_ATTRS 10 |
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#define FC_VPORT_NUM_ATTRS 9 |
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#define FC_HOST_NUM_ATTRS 22 |
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struct fc_internal { struct scsi_transport_template t; struct fc_function_template *f; /* * For attributes : each object has : * An array of the actual attributes structures * An array of null-terminated pointers to the attribute * structures - used for mid-layer interaction. * * The attribute containers for the starget and host are are * part of the midlayer. As the remote port is specific to the * fc transport, we must provide the attribute container. */ |
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struct device_attribute private_starget_attrs[ |
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FC_STARGET_NUM_ATTRS]; |
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struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
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|
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struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; |
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struct transport_container rport_attr_cont; |
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struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; |
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struct transport_container vport_attr_cont; |
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struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; |
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}; #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) |
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static int fc_target_setup(struct transport_container *tc, struct device *dev, |
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struct device *cdev) |
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{ struct scsi_target *starget = to_scsi_target(dev); struct fc_rport *rport = starget_to_rport(starget); /* * if parent is remote port, use values from remote port. * Otherwise, this host uses the fc_transport, but not the * remote port interface. As such, initialize to known non-values. */ if (rport) { fc_starget_node_name(starget) = rport->node_name; fc_starget_port_name(starget) = rport->port_name; fc_starget_port_id(starget) = rport->port_id; } else { fc_starget_node_name(starget) = -1; fc_starget_port_name(starget) = -1; fc_starget_port_id(starget) = -1; } return 0; } static DECLARE_TRANSPORT_CLASS(fc_transport_class, "fc_transport", fc_target_setup, NULL, NULL); |
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static int fc_host_setup(struct transport_container *tc, struct device *dev, |
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struct device *cdev) |
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{ struct Scsi_Host *shost = dev_to_shost(dev); |
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struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
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|
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/* |
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* Set default values easily detected by the midlayer as * failure cases. The scsi lldd is responsible for initializing * all transport attributes to valid values per host. */ |
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fc_host->node_name = -1; fc_host->port_name = -1; fc_host->permanent_port_name = -1; fc_host->supported_classes = FC_COS_UNSPECIFIED; memset(fc_host->supported_fc4s, 0, sizeof(fc_host->supported_fc4s)); |
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fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; fc_host->maxframe_size = -1; |
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fc_host->max_npiv_vports = 0; |
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memset(fc_host->serial_number, 0, sizeof(fc_host->serial_number)); fc_host->port_id = -1; fc_host->port_type = FC_PORTTYPE_UNKNOWN; fc_host->port_state = FC_PORTSTATE_UNKNOWN; memset(fc_host->active_fc4s, 0, sizeof(fc_host->active_fc4s)); fc_host->speed = FC_PORTSPEED_UNKNOWN; fc_host->fabric_name = -1; |
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memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); |
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fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; INIT_LIST_HEAD(&fc_host->rports); INIT_LIST_HEAD(&fc_host->rport_bindings); |
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INIT_LIST_HEAD(&fc_host->vports); |
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fc_host->next_rport_number = 0; fc_host->next_target_id = 0; |
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fc_host->next_vport_number = 0; fc_host->npiv_vports_inuse = 0; |
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snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), "fc_wq_%d", shost->host_no); |
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fc_host->work_q = alloc_workqueue(fc_host->work_q_name, 0, 0); |
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if (!fc_host->work_q) return -ENOMEM; |
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fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
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snprintf(fc_host->devloss_work_q_name, sizeof(fc_host->devloss_work_q_name), "fc_dl_%d", shost->host_no); |
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fc_host->devloss_work_q = alloc_workqueue(fc_host->devloss_work_q_name, 0, 0); |
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if (!fc_host->devloss_work_q) { destroy_workqueue(fc_host->work_q); fc_host->work_q = NULL; return -ENOMEM; } |
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fc_bsg_hostadd(shost, fc_host); /* ignore any bsg add error - we just can't do sgio */ return 0; } static int fc_host_remove(struct transport_container *tc, struct device *dev, struct device *cdev) { struct Scsi_Host *shost = dev_to_shost(dev); struct fc_host_attrs *fc_host = shost_to_fc_host(shost); fc_bsg_remove(fc_host->rqst_q); |
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return 0; } static DECLARE_TRANSPORT_CLASS(fc_host_class, "fc_host", fc_host_setup, |
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fc_host_remove, |
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NULL); /* * Setup and Remove actions for remote ports are handled * in the service functions below. */ static DECLARE_TRANSPORT_CLASS(fc_rport_class, "fc_remote_ports", NULL, NULL, NULL); /* |
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* Setup and Remove actions for virtual ports are handled * in the service functions below. */ static DECLARE_TRANSPORT_CLASS(fc_vport_class, "fc_vports", NULL, NULL, NULL); /* |
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* Netlink Infrastructure |
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*/ |
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static atomic_t fc_event_seq; /** * fc_get_event_number - Obtain the next sequential FC event number * * Notes: |
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479 |
* We could have inlined this, but it would have required fc_event_seq to |
84314fd47 [SCSI] SCSI and F... |
480 481 |
* be exposed. For now, live with the subroutine call. * Atomic used to avoid lock/unlock... |
eb44820c2 [SCSI] Add Docume... |
482 |
*/ |
84314fd47 [SCSI] SCSI and F... |
483 484 485 486 487 488 489 490 491 492 |
u32 fc_get_event_number(void) { return atomic_add_return(1, &fc_event_seq); } EXPORT_SYMBOL(fc_get_event_number); /** * fc_host_post_event - called to post an even on an fc_host. |
84314fd47 [SCSI] SCSI and F... |
493 494 495 496 497 498 499 |
* @shost: host the event occurred on * @event_number: fc event number obtained from get_fc_event_number() * @event_code: fc_host event being posted * @event_data: 32bits of data for the event being posted * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
500 |
*/ |
84314fd47 [SCSI] SCSI and F... |
501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 |
void fc_host_post_event(struct Scsi_Host *shost, u32 event_number, enum fc_host_event_code event_code, u32 event_data) { struct sk_buff *skb; struct nlmsghdr *nlh; struct fc_nl_event *event; const char *name; u32 len, skblen; int err; if (!scsi_nl_sock) { err = -ENOENT; goto send_fail; } len = FC_NL_MSGALIGN(sizeof(*event)); skblen = NLMSG_SPACE(len); skb = alloc_skb(skblen, GFP_KERNEL); if (!skb) { err = -ENOBUFS; goto send_fail; } nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, skblen - sizeof(*nlh), 0); if (!nlh) { err = -ENOBUFS; goto send_fail_skb; } event = NLMSG_DATA(nlh); INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, FC_NL_ASYNC_EVENT, len); event->seconds = get_seconds(); event->vendor_id = 0; event->host_no = shost->host_no; event->event_datalen = sizeof(u32); /* bytes */ event->event_num = event_number; event->event_code = event_code; event->event_data = event_data; |
ff491a733 netlink: change r... |
543 544 |
nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, GFP_KERNEL); |
84314fd47 [SCSI] SCSI and F... |
545 546 547 548 549 550 551 552 553 |
return; send_fail_skb: kfree_skb(skb); send_fail: name = get_fc_host_event_code_name(event_code); printk(KERN_WARNING "%s: Dropped Event : host %d %s data 0x%08x - err %d ", |
cadbd4a5e [SCSI] replace __... |
554 |
__func__, shost->host_no, |
84314fd47 [SCSI] SCSI and F... |
555 556 557 558 559 560 561 |
(name) ? name : "<unknown>", event_data, err); return; } EXPORT_SYMBOL(fc_host_post_event); /** |
eb44820c2 [SCSI] Add Docume... |
562 |
* fc_host_post_vendor_event - called to post a vendor unique event on an fc_host |
84314fd47 [SCSI] SCSI and F... |
563 564 565 566 |
* @shost: host the event occurred on * @event_number: fc event number obtained from get_fc_event_number() * @data_len: amount, in bytes, of vendor unique data * @data_buf: pointer to vendor unique data |
eb44820c2 [SCSI] Add Docume... |
567 |
* @vendor_id: Vendor id |
84314fd47 [SCSI] SCSI and F... |
568 569 570 |
* * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
571 |
*/ |
84314fd47 [SCSI] SCSI and F... |
572 573 |
void fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, |
f14e2e29c [SCSI] SCSI & FC ... |
574 |
u32 data_len, char * data_buf, u64 vendor_id) |
84314fd47 [SCSI] SCSI and F... |
575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 |
{ struct sk_buff *skb; struct nlmsghdr *nlh; struct fc_nl_event *event; u32 len, skblen; int err; if (!scsi_nl_sock) { err = -ENOENT; goto send_vendor_fail; } len = FC_NL_MSGALIGN(sizeof(*event) + data_len); skblen = NLMSG_SPACE(len); skb = alloc_skb(skblen, GFP_KERNEL); if (!skb) { err = -ENOBUFS; goto send_vendor_fail; } nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, skblen - sizeof(*nlh), 0); if (!nlh) { err = -ENOBUFS; goto send_vendor_fail_skb; } event = NLMSG_DATA(nlh); INIT_SCSI_NL_HDR(&event->snlh, SCSI_NL_TRANSPORT_FC, FC_NL_ASYNC_EVENT, len); event->seconds = get_seconds(); event->vendor_id = vendor_id; event->host_no = shost->host_no; event->event_datalen = data_len; /* bytes */ event->event_num = event_number; event->event_code = FCH_EVT_VENDOR_UNIQUE; memcpy(&event->event_data, data_buf, data_len); |
ff491a733 netlink: change r... |
613 614 |
nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, GFP_KERNEL); |
84314fd47 [SCSI] SCSI and F... |
615 616 617 618 619 620 621 622 |
return; send_vendor_fail_skb: kfree_skb(skb); send_vendor_fail: printk(KERN_WARNING "%s: Dropped Event : host %d vendor_unique - err %d ", |
cadbd4a5e [SCSI] replace __... |
623 |
__func__, shost->host_no, err); |
84314fd47 [SCSI] SCSI and F... |
624 625 626 |
return; } EXPORT_SYMBOL(fc_host_post_vendor_event); |
1da177e4c Linux-2.6.12-rc2 |
627 628 629 |
static __init int fc_transport_init(void) { |
84314fd47 [SCSI] SCSI and F... |
630 631 632 633 634 |
int error; atomic_set(&fc_event_seq, 0); error = transport_class_register(&fc_host_class); |
1da177e4c Linux-2.6.12-rc2 |
635 636 |
if (error) return error; |
a53eb5e06 [SCSI] FC Transpo... |
637 638 |
error = transport_class_register(&fc_vport_class); if (error) |
48de68a40 [SCSI] fc class: ... |
639 |
goto unreg_host_class; |
1da177e4c Linux-2.6.12-rc2 |
640 641 |
error = transport_class_register(&fc_rport_class); if (error) |
48de68a40 [SCSI] fc class: ... |
642 643 644 645 646 647 648 649 650 651 652 653 654 |
goto unreg_vport_class; error = transport_class_register(&fc_transport_class); if (error) goto unreg_rport_class; return 0; unreg_rport_class: transport_class_unregister(&fc_rport_class); unreg_vport_class: transport_class_unregister(&fc_vport_class); unreg_host_class: transport_class_unregister(&fc_host_class); return error; |
1da177e4c Linux-2.6.12-rc2 |
655 656 657 658 659 660 661 |
} static void __exit fc_transport_exit(void) { transport_class_unregister(&fc_transport_class); transport_class_unregister(&fc_rport_class); transport_class_unregister(&fc_host_class); |
a53eb5e06 [SCSI] FC Transpo... |
662 |
transport_class_unregister(&fc_vport_class); |
1da177e4c Linux-2.6.12-rc2 |
663 664 665 666 667 668 669 670 |
} /* * FC Remote Port Attribute Management */ #define fc_rport_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
671 672 |
show_fc_rport_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
673 |
{ \ |
ee959b00c SCSI: convert str... |
674 |
struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
675 676 |
struct Scsi_Host *shost = rport_to_shost(rport); \ struct fc_internal *i = to_fc_internal(shost->transportt); \ |
19a7b4aeb [SCSI] update fc_... |
677 678 |
if ((i->f->get_rport_##field) && \ !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148d [SCSI] fix for fc... |
679 |
(rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4aeb [SCSI] update fc_... |
680 |
(rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
1da177e4c Linux-2.6.12-rc2 |
681 682 683 684 685 686 |
i->f->get_rport_##field(rport); \ return snprintf(buf, sz, format_string, cast rport->field); \ } #define fc_rport_store_function(field) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
687 688 689 |
store_fc_rport_##field(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ |
1da177e4c Linux-2.6.12-rc2 |
690 691 |
{ \ int val; \ |
ee959b00c SCSI: convert str... |
692 |
struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
693 694 |
struct Scsi_Host *shost = rport_to_shost(rport); \ struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966d [SCSI] FC transpo... |
695 |
char *cp; \ |
19a7b4aeb [SCSI] update fc_... |
696 |
if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
42e33148d [SCSI] fix for fc... |
697 |
(rport->port_state == FC_PORTSTATE_DELETED) || \ |
19a7b4aeb [SCSI] update fc_... |
698 699 |
(rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ return -EBUSY; \ |
0f29b966d [SCSI] FC transpo... |
700 701 702 703 |
val = simple_strtoul(buf, &cp, 0); \ if (*cp && (*cp != ' ')) \ return -EINVAL; \ |
1da177e4c Linux-2.6.12-rc2 |
704 705 706 707 708 709 |
i->f->set_rport_##field(rport, val); \ return count; \ } #define fc_rport_rd_attr(field, format_string, sz) \ fc_rport_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
710 |
static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
711 712 713 714 |
show_fc_rport_##field, NULL) #define fc_rport_rd_attr_cast(field, format_string, sz, cast) \ fc_rport_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
715 |
static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
716 717 718 719 720 |
show_fc_rport_##field, NULL) #define fc_rport_rw_attr(field, format_string, sz) \ fc_rport_show_function(field, format_string, sz, ) \ fc_rport_store_function(field) \ |
ee959b00c SCSI: convert str... |
721 |
static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
1da177e4c Linux-2.6.12-rc2 |
722 723 724 725 726 727 |
show_fc_rport_##field, \ store_fc_rport_##field) #define fc_private_rport_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
728 729 |
show_fc_rport_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
730 |
{ \ |
ee959b00c SCSI: convert str... |
731 |
struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
732 733 734 735 736 |
return snprintf(buf, sz, format_string, cast rport->field); \ } #define fc_private_rport_rd_attr(field, format_string, sz) \ fc_private_rport_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
737 |
static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
738 739 740 741 |
show_fc_rport_##field, NULL) #define fc_private_rport_rd_attr_cast(field, format_string, sz, cast) \ fc_private_rport_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
742 |
static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
743 744 745 746 747 |
show_fc_rport_##field, NULL) #define fc_private_rport_rd_enum_attr(title, maxlen) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
748 749 |
show_fc_rport_##title (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
750 |
{ \ |
ee959b00c SCSI: convert str... |
751 |
struct fc_rport *rport = transport_class_to_rport(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
752 753 754 755 756 757 758 |
const char *name; \ name = get_fc_##title##_name(rport->title); \ if (!name) \ return -EINVAL; \ return snprintf(buf, maxlen, "%s ", name); \ } \ |
ee959b00c SCSI: convert str... |
759 |
static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
760 761 762 763 |
show_fc_rport_##title, NULL) #define SETUP_RPORT_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
764 |
i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
765 766 767 768 769 770 771 |
i->private_rport_attrs[count].attr.mode = S_IRUGO; \ i->private_rport_attrs[count].store = NULL; \ i->rport_attrs[count] = &i->private_rport_attrs[count]; \ if (i->f->show_rport_##field) \ count++ #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
772 |
i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
773 774 775 776 777 778 |
i->private_rport_attrs[count].attr.mode = S_IRUGO; \ i->private_rport_attrs[count].store = NULL; \ i->rport_attrs[count] = &i->private_rport_attrs[count]; \ count++ #define SETUP_RPORT_ATTRIBUTE_RW(field) \ |
ee959b00c SCSI: convert str... |
779 |
i->private_rport_attrs[count] = device_attr_rport_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
780 781 782 783 784 785 786 |
if (!i->f->set_rport_##field) { \ i->private_rport_attrs[count].attr.mode = S_IRUGO; \ i->private_rport_attrs[count].store = NULL; \ } \ i->rport_attrs[count] = &i->private_rport_attrs[count]; \ if (i->f->show_rport_##field) \ count++ |
0f29b966d [SCSI] FC transpo... |
787 788 |
#define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ { \ |
ee959b00c SCSI: convert str... |
789 |
i->private_rport_attrs[count] = device_attr_rport_##field; \ |
0f29b966d [SCSI] FC transpo... |
790 791 792 |
i->rport_attrs[count] = &i->private_rport_attrs[count]; \ count++; \ } |
1da177e4c Linux-2.6.12-rc2 |
793 794 795 796 797 798 799 800 801 |
/* The FC Transport Remote Port Attributes: */ /* Fixed Remote Port Attributes */ fc_private_rport_rd_attr(maxframe_size, "%u bytes ", 20); static ssize_t |
ee959b00c SCSI: convert str... |
802 803 |
show_fc_rport_supported_classes (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
804 |
{ |
ee959b00c SCSI: convert str... |
805 |
struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4c Linux-2.6.12-rc2 |
806 807 808 809 810 |
if (rport->supported_classes == FC_COS_UNSPECIFIED) return snprintf(buf, 20, "unspecified "); return get_fc_cos_names(rport->supported_classes, buf); } |
ee959b00c SCSI: convert str... |
811 |
static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
812 813 814 |
show_fc_rport_supported_classes, NULL); /* Dynamic Remote Port Attributes */ |
19a7b4aeb [SCSI] update fc_... |
815 816 817 |
/* * dev_loss_tmo attribute */ |
43ca910a9 [SCSI] fc class: ... |
818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 |
static int fc_str_to_dev_loss(const char *buf, unsigned long *val) { char *cp; *val = simple_strtoul(buf, &cp, 0); if ((*cp && (*cp != ' ')) || (*val < 0)) return -EINVAL; /* * Check for overflow; dev_loss_tmo is u32 */ if (*val > UINT_MAX) return -EINVAL; return 0; } static int fc_rport_set_dev_loss_tmo(struct fc_rport *rport, unsigned long val) |
19a7b4aeb [SCSI] update fc_... |
837 |
{ |
19a7b4aeb [SCSI] update fc_... |
838 839 |
struct Scsi_Host *shost = rport_to_shost(rport); struct fc_internal *i = to_fc_internal(shost->transportt); |
43ca910a9 [SCSI] fc class: ... |
840 |
|
19a7b4aeb [SCSI] update fc_... |
841 |
if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
42e33148d [SCSI] fix for fc... |
842 |
(rport->port_state == FC_PORTSTATE_DELETED) || |
19a7b4aeb [SCSI] update fc_... |
843 844 |
(rport->port_state == FC_PORTSTATE_NOTPRESENT)) return -EBUSY; |
f2818663c [SCSI] scsi_trans... |
845 |
/* |
36dd288f0 [SCSI] scsi_trans... |
846 847 848 849 850 851 |
* Check for overflow; dev_loss_tmo is u32 */ if (val > UINT_MAX) return -EINVAL; /* |
f2818663c [SCSI] scsi_trans... |
852 853 854 855 856 857 |
* If fast_io_fail is off we have to cap * dev_loss_tmo at SCSI_DEVICE_BLOCK_MAX_TIMEOUT */ if (rport->fast_io_fail_tmo == -1 && val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT) return -EINVAL; |
19a7b4aeb [SCSI] update fc_... |
858 |
i->f->set_rport_dev_loss_tmo(rport, val); |
43ca910a9 [SCSI] fc class: ... |
859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 |
return 0; } fc_rport_show_function(dev_loss_tmo, "%d ", 20, ) static ssize_t store_fc_rport_dev_loss_tmo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct fc_rport *rport = transport_class_to_rport(dev); unsigned long val; int rc; rc = fc_str_to_dev_loss(buf, &val); if (rc) return rc; rc = fc_rport_set_dev_loss_tmo(rport, val); if (rc) return rc; |
19a7b4aeb [SCSI] update fc_... |
879 880 |
return count; } |
ee959b00c SCSI: convert str... |
881 |
static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
19a7b4aeb [SCSI] update fc_... |
882 |
show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
1da177e4c Linux-2.6.12-rc2 |
883 884 885 886 887 888 889 890 891 892 893 894 |
/* Private Remote Port Attributes */ fc_private_rport_rd_attr_cast(node_name, "0x%llx ", 20, unsigned long long); fc_private_rport_rd_attr_cast(port_name, "0x%llx ", 20, unsigned long long); fc_private_rport_rd_attr(port_id, "0x%06x ", 20); static ssize_t |
ee959b00c SCSI: convert str... |
895 896 |
show_fc_rport_roles (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
897 |
{ |
ee959b00c SCSI: convert str... |
898 |
struct fc_rport *rport = transport_class_to_rport(dev); |
1da177e4c Linux-2.6.12-rc2 |
899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 |
/* identify any roles that are port_id specific */ if ((rport->port_id != -1) && (rport->port_id & FC_WELLKNOWN_PORTID_MASK) == FC_WELLKNOWN_PORTID_MASK) { switch (rport->port_id & FC_WELLKNOWN_ROLE_MASK) { case FC_FPORT_PORTID: return snprintf(buf, 30, "Fabric Port "); case FC_FABCTLR_PORTID: return snprintf(buf, 30, "Fabric Controller "); case FC_DIRSRVR_PORTID: return snprintf(buf, 30, "Directory Server "); case FC_TIMESRVR_PORTID: return snprintf(buf, 30, "Time Server "); case FC_MGMTSRVR_PORTID: return snprintf(buf, 30, "Management Server "); default: return snprintf(buf, 30, "Unknown Fabric Entity "); } } else { |
a53eb5e06 [SCSI] FC Transpo... |
925 |
if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
1da177e4c Linux-2.6.12-rc2 |
926 927 |
return snprintf(buf, 20, "unknown "); |
a53eb5e06 [SCSI] FC Transpo... |
928 |
return get_fc_port_roles_names(rport->roles, buf); |
1da177e4c Linux-2.6.12-rc2 |
929 930 |
} } |
ee959b00c SCSI: convert str... |
931 |
static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
932 933 934 935 936 |
show_fc_rport_roles, NULL); fc_private_rport_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); fc_private_rport_rd_attr(scsi_target_id, "%d ", 20); |
0f29b966d [SCSI] FC transpo... |
937 938 939 940 |
/* * fast_io_fail_tmo attribute */ static ssize_t |
ee959b00c SCSI: convert str... |
941 942 |
show_fc_rport_fast_io_fail_tmo (struct device *dev, struct device_attribute *attr, char *buf) |
0f29b966d [SCSI] FC transpo... |
943 |
{ |
ee959b00c SCSI: convert str... |
944 |
struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966d [SCSI] FC transpo... |
945 946 947 948 949 950 951 952 953 |
if (rport->fast_io_fail_tmo == -1) return snprintf(buf, 5, "off "); return snprintf(buf, 20, "%d ", rport->fast_io_fail_tmo); } static ssize_t |
ee959b00c SCSI: convert str... |
954 955 956 |
store_fc_rport_fast_io_fail_tmo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
0f29b966d [SCSI] FC transpo... |
957 958 959 |
{ int val; char *cp; |
ee959b00c SCSI: convert str... |
960 |
struct fc_rport *rport = transport_class_to_rport(dev); |
0f29b966d [SCSI] FC transpo... |
961 962 963 964 965 966 967 968 969 |
if ((rport->port_state == FC_PORTSTATE_BLOCKED) || (rport->port_state == FC_PORTSTATE_DELETED) || (rport->port_state == FC_PORTSTATE_NOTPRESENT)) return -EBUSY; if (strncmp(buf, "off", 3) == 0) rport->fast_io_fail_tmo = -1; else { val = simple_strtoul(buf, &cp, 0); |
f2818663c [SCSI] scsi_trans... |
970 971 972 973 974 975 976 977 978 |
if ((*cp && (*cp != ' ')) || (val < 0)) return -EINVAL; /* * Cap fast_io_fail by dev_loss_tmo or * SCSI_DEVICE_BLOCK_MAX_TIMEOUT. */ if ((val >= rport->dev_loss_tmo) || (val > SCSI_DEVICE_BLOCK_MAX_TIMEOUT)) |
0f29b966d [SCSI] FC transpo... |
979 |
return -EINVAL; |
f2818663c [SCSI] scsi_trans... |
980 |
|
0f29b966d [SCSI] FC transpo... |
981 982 983 984 |
rport->fast_io_fail_tmo = val; } return count; } |
ee959b00c SCSI: convert str... |
985 |
static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
0f29b966d [SCSI] FC transpo... |
986 |
show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
1da177e4c Linux-2.6.12-rc2 |
987 988 989 990 991 992 993 994 |
/* * FC SCSI Target Attribute Management */ /* * Note: in the target show function we recognize when the remote |
732bee7af fix typos concern... |
995 |
* port is in the hierarchy and do not allow the driver to get |
1da177e4c Linux-2.6.12-rc2 |
996 997 998 999 1000 |
* involved in sysfs functions. The driver only gets involved if * it's the "old" style that doesn't use rports. */ #define fc_starget_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1001 1002 |
show_fc_starget_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
1003 |
{ \ |
ee959b00c SCSI: convert str... |
1004 |
struct scsi_target *starget = transport_class_to_starget(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 |
struct Scsi_Host *shost = dev_to_shost(starget->dev.parent); \ struct fc_internal *i = to_fc_internal(shost->transportt); \ struct fc_rport *rport = starget_to_rport(starget); \ if (rport) \ fc_starget_##field(starget) = rport->field; \ else if (i->f->get_starget_##field) \ i->f->get_starget_##field(starget); \ return snprintf(buf, sz, format_string, \ cast fc_starget_##field(starget)); \ } #define fc_starget_rd_attr(field, format_string, sz) \ fc_starget_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
1018 |
static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
1019 1020 1021 1022 |
show_fc_starget_##field, NULL) #define fc_starget_rd_attr_cast(field, format_string, sz, cast) \ fc_starget_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
1023 |
static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
1024 1025 1026 |
show_fc_starget_##field, NULL) #define SETUP_STARGET_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
1027 |
i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
1028 1029 1030 1031 1032 1033 1034 |
i->private_starget_attrs[count].attr.mode = S_IRUGO; \ i->private_starget_attrs[count].store = NULL; \ i->starget_attrs[count] = &i->private_starget_attrs[count]; \ if (i->f->show_starget_##field) \ count++ #define SETUP_STARGET_ATTRIBUTE_RW(field) \ |
ee959b00c SCSI: convert str... |
1035 |
i->private_starget_attrs[count] = device_attr_starget_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 |
if (!i->f->set_starget_##field) { \ i->private_starget_attrs[count].attr.mode = S_IRUGO; \ i->private_starget_attrs[count].store = NULL; \ } \ i->starget_attrs[count] = &i->private_starget_attrs[count]; \ if (i->f->show_starget_##field) \ count++ /* The FC Transport SCSI Target Attributes: */ fc_starget_rd_attr_cast(node_name, "0x%llx ", 20, unsigned long long); fc_starget_rd_attr_cast(port_name, "0x%llx ", 20, unsigned long long); fc_starget_rd_attr(port_id, "0x%06x ", 20); /* |
a53eb5e06 [SCSI] FC Transpo... |
1054 1055 1056 1057 1058 |
* FC Virtual Port Attribute Management */ #define fc_vport_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1059 1060 |
show_fc_vport_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
a53eb5e06 [SCSI] FC Transpo... |
1061 |
{ \ |
ee959b00c SCSI: convert str... |
1062 |
struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e06 [SCSI] FC Transpo... |
1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 |
struct Scsi_Host *shost = vport_to_shost(vport); \ struct fc_internal *i = to_fc_internal(shost->transportt); \ if ((i->f->get_vport_##field) && \ !(vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING))) \ i->f->get_vport_##field(vport); \ return snprintf(buf, sz, format_string, cast vport->field); \ } #define fc_vport_store_function(field) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1073 1074 1075 |
store_fc_vport_##field(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ |
a53eb5e06 [SCSI] FC Transpo... |
1076 1077 |
{ \ int val; \ |
ee959b00c SCSI: convert str... |
1078 |
struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e06 [SCSI] FC Transpo... |
1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 |
struct Scsi_Host *shost = vport_to_shost(vport); \ struct fc_internal *i = to_fc_internal(shost->transportt); \ char *cp; \ if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ return -EBUSY; \ val = simple_strtoul(buf, &cp, 0); \ if (*cp && (*cp != ' ')) \ return -EINVAL; \ i->f->set_vport_##field(vport, val); \ return count; \ } #define fc_vport_store_str_function(field, slen) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1094 1095 1096 |
store_fc_vport_##field(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ |
a53eb5e06 [SCSI] FC Transpo... |
1097 |
{ \ |
ee959b00c SCSI: convert str... |
1098 |
struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e06 [SCSI] FC Transpo... |
1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 |
struct Scsi_Host *shost = vport_to_shost(vport); \ struct fc_internal *i = to_fc_internal(shost->transportt); \ unsigned int cnt=count; \ \ /* count may include a LF at end of string */ \ if (buf[cnt-1] == ' ') \ cnt--; \ if (cnt > ((slen) - 1)) \ return -EINVAL; \ memcpy(vport->field, buf, cnt); \ i->f->set_vport_##field(vport); \ return count; \ } #define fc_vport_rd_attr(field, format_string, sz) \ fc_vport_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
1116 |
static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e06 [SCSI] FC Transpo... |
1117 1118 1119 1120 |
show_fc_vport_##field, NULL) #define fc_vport_rd_attr_cast(field, format_string, sz, cast) \ fc_vport_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
1121 |
static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e06 [SCSI] FC Transpo... |
1122 1123 1124 1125 1126 |
show_fc_vport_##field, NULL) #define fc_vport_rw_attr(field, format_string, sz) \ fc_vport_show_function(field, format_string, sz, ) \ fc_vport_store_function(field) \ |
ee959b00c SCSI: convert str... |
1127 |
static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e06 [SCSI] FC Transpo... |
1128 1129 1130 1131 1132 |
show_fc_vport_##field, \ store_fc_vport_##field) #define fc_private_vport_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1133 1134 |
show_fc_vport_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
a53eb5e06 [SCSI] FC Transpo... |
1135 |
{ \ |
ee959b00c SCSI: convert str... |
1136 |
struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e06 [SCSI] FC Transpo... |
1137 1138 1139 1140 1141 |
return snprintf(buf, sz, format_string, cast vport->field); \ } #define fc_private_vport_store_u32_function(field) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1142 1143 1144 |
store_fc_vport_##field(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ |
a53eb5e06 [SCSI] FC Transpo... |
1145 1146 |
{ \ u32 val; \ |
ee959b00c SCSI: convert str... |
1147 |
struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e06 [SCSI] FC Transpo... |
1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 |
char *cp; \ if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ return -EBUSY; \ val = simple_strtoul(buf, &cp, 0); \ if (*cp && (*cp != ' ')) \ return -EINVAL; \ vport->field = val; \ return count; \ } #define fc_private_vport_rd_attr(field, format_string, sz) \ fc_private_vport_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
1162 |
static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e06 [SCSI] FC Transpo... |
1163 1164 1165 1166 |
show_fc_vport_##field, NULL) #define fc_private_vport_rd_attr_cast(field, format_string, sz, cast) \ fc_private_vport_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
1167 |
static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
a53eb5e06 [SCSI] FC Transpo... |
1168 1169 1170 1171 1172 |
show_fc_vport_##field, NULL) #define fc_private_vport_rw_u32_attr(field, format_string, sz) \ fc_private_vport_show_function(field, format_string, sz, ) \ fc_private_vport_store_u32_function(field) \ |
ee959b00c SCSI: convert str... |
1173 |
static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
a53eb5e06 [SCSI] FC Transpo... |
1174 1175 1176 1177 1178 1179 |
show_fc_vport_##field, \ store_fc_vport_##field) #define fc_private_vport_rd_enum_attr(title, maxlen) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1180 1181 1182 |
show_fc_vport_##title (struct device *dev, \ struct device_attribute *attr, \ char *buf) \ |
a53eb5e06 [SCSI] FC Transpo... |
1183 |
{ \ |
ee959b00c SCSI: convert str... |
1184 |
struct fc_vport *vport = transport_class_to_vport(dev); \ |
a53eb5e06 [SCSI] FC Transpo... |
1185 1186 1187 1188 1189 1190 1191 |
const char *name; \ name = get_fc_##title##_name(vport->title); \ if (!name) \ return -EINVAL; \ return snprintf(buf, maxlen, "%s ", name); \ } \ |
ee959b00c SCSI: convert str... |
1192 |
static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
a53eb5e06 [SCSI] FC Transpo... |
1193 1194 1195 1196 |
show_fc_vport_##title, NULL) #define SETUP_VPORT_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
1197 |
i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e06 [SCSI] FC Transpo... |
1198 1199 1200 1201 1202 1203 1204 1205 |
i->private_vport_attrs[count].attr.mode = S_IRUGO; \ i->private_vport_attrs[count].store = NULL; \ i->vport_attrs[count] = &i->private_vport_attrs[count]; \ if (i->f->get_##field) \ count++ /* NOTE: Above MACRO differs: checks function not show bit */ #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
1206 |
i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e06 [SCSI] FC Transpo... |
1207 1208 1209 1210 1211 1212 |
i->private_vport_attrs[count].attr.mode = S_IRUGO; \ i->private_vport_attrs[count].store = NULL; \ i->vport_attrs[count] = &i->private_vport_attrs[count]; \ count++ #define SETUP_VPORT_ATTRIBUTE_WR(field) \ |
ee959b00c SCSI: convert str... |
1213 |
i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e06 [SCSI] FC Transpo... |
1214 1215 1216 1217 1218 1219 |
i->vport_attrs[count] = &i->private_vport_attrs[count]; \ if (i->f->field) \ count++ /* NOTE: Above MACRO differs: checks function */ #define SETUP_VPORT_ATTRIBUTE_RW(field) \ |
ee959b00c SCSI: convert str... |
1220 |
i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e06 [SCSI] FC Transpo... |
1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 |
if (!i->f->set_vport_##field) { \ i->private_vport_attrs[count].attr.mode = S_IRUGO; \ i->private_vport_attrs[count].store = NULL; \ } \ i->vport_attrs[count] = &i->private_vport_attrs[count]; \ count++ /* NOTE: Above MACRO differs: does not check show bit */ #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RW(field) \ { \ |
ee959b00c SCSI: convert str... |
1231 |
i->private_vport_attrs[count] = device_attr_vport_##field; \ |
a53eb5e06 [SCSI] FC Transpo... |
1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 |
i->vport_attrs[count] = &i->private_vport_attrs[count]; \ count++; \ } /* The FC Transport Virtual Port Attributes: */ /* Fixed Virtual Port Attributes */ /* Dynamic Virtual Port Attributes */ /* Private Virtual Port Attributes */ fc_private_vport_rd_enum_attr(vport_state, FC_VPORTSTATE_MAX_NAMELEN); fc_private_vport_rd_enum_attr(vport_last_state, FC_VPORTSTATE_MAX_NAMELEN); fc_private_vport_rd_attr_cast(node_name, "0x%llx ", 20, unsigned long long); fc_private_vport_rd_attr_cast(port_name, "0x%llx ", 20, unsigned long long); static ssize_t |
ee959b00c SCSI: convert str... |
1253 1254 |
show_fc_vport_roles (struct device *dev, struct device_attribute *attr, char *buf) |
a53eb5e06 [SCSI] FC Transpo... |
1255 |
{ |
ee959b00c SCSI: convert str... |
1256 |
struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e06 [SCSI] FC Transpo... |
1257 1258 1259 1260 1261 1262 |
if (vport->roles == FC_PORT_ROLE_UNKNOWN) return snprintf(buf, 20, "unknown "); return get_fc_port_roles_names(vport->roles, buf); } |
ee959b00c SCSI: convert str... |
1263 |
static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
a53eb5e06 [SCSI] FC Transpo... |
1264 1265 1266 1267 1268 1269 1270 |
fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); fc_private_vport_show_function(symbolic_name, "%s ", FC_VPORT_SYMBOLIC_NAMELEN + 1, ) fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) |
ee959b00c SCSI: convert str... |
1271 |
static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
a53eb5e06 [SCSI] FC Transpo... |
1272 1273 1274 |
show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); static ssize_t |
ee959b00c SCSI: convert str... |
1275 1276 |
store_fc_vport_delete(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
a53eb5e06 [SCSI] FC Transpo... |
1277 |
{ |
ee959b00c SCSI: convert str... |
1278 |
struct fc_vport *vport = transport_class_to_vport(dev); |
9ef3e4a45 [SCSI] fc_transpo... |
1279 |
struct Scsi_Host *shost = vport_to_shost(vport); |
0d9dc7c8b [SCSI] scsi_trans... |
1280 1281 1282 1283 1284 1285 1286 1287 1288 |
unsigned long flags; spin_lock_irqsave(shost->host_lock, flags); if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) { spin_unlock_irqrestore(shost->host_lock, flags); return -EBUSY; } vport->flags |= FC_VPORT_DELETING; spin_unlock_irqrestore(shost->host_lock, flags); |
a53eb5e06 [SCSI] FC Transpo... |
1289 |
|
9ef3e4a45 [SCSI] fc_transpo... |
1290 |
fc_queue_work(shost, &vport->vport_delete_work); |
a53eb5e06 [SCSI] FC Transpo... |
1291 1292 |
return count; } |
ee959b00c SCSI: convert str... |
1293 |
static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
a53eb5e06 [SCSI] FC Transpo... |
1294 1295 1296 1297 1298 1299 1300 1301 |
NULL, store_fc_vport_delete); /* * Enable/Disable vport * Write "1" to disable, write "0" to enable */ static ssize_t |
ee959b00c SCSI: convert str... |
1302 1303 |
store_fc_vport_disable(struct device *dev, struct device_attribute *attr, const char *buf, |
a53eb5e06 [SCSI] FC Transpo... |
1304 1305 |
size_t count) { |
ee959b00c SCSI: convert str... |
1306 |
struct fc_vport *vport = transport_class_to_vport(dev); |
a53eb5e06 [SCSI] FC Transpo... |
1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 |
struct Scsi_Host *shost = vport_to_shost(vport); struct fc_internal *i = to_fc_internal(shost->transportt); int stat; if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) return -EBUSY; if (*buf == '0') { if (vport->vport_state != FC_VPORT_DISABLED) return -EALREADY; } else if (*buf == '1') { if (vport->vport_state == FC_VPORT_DISABLED) return -EALREADY; } else return -EINVAL; stat = i->f->vport_disable(vport, ((*buf == '0') ? false : true)); return stat ? stat : count; } |
ee959b00c SCSI: convert str... |
1326 |
static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
a53eb5e06 [SCSI] FC Transpo... |
1327 1328 1329 1330 |
NULL, store_fc_vport_disable); /* |
1da177e4c Linux-2.6.12-rc2 |
1331 1332 1333 1334 1335 |
* Host Attribute Management */ #define fc_host_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1336 1337 |
show_fc_host_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
1338 |
{ \ |
ee959b00c SCSI: convert str... |
1339 |
struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
1340 1341 1342 1343 1344 1345 1346 1347 |
struct fc_internal *i = to_fc_internal(shost->transportt); \ if (i->f->get_host_##field) \ i->f->get_host_##field(shost); \ return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ } #define fc_host_store_function(field) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1348 1349 1350 |
store_fc_host_##field(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ |
1da177e4c Linux-2.6.12-rc2 |
1351 1352 |
{ \ int val; \ |
ee959b00c SCSI: convert str... |
1353 |
struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
1354 |
struct fc_internal *i = to_fc_internal(shost->transportt); \ |
0f29b966d [SCSI] FC transpo... |
1355 |
char *cp; \ |
1da177e4c Linux-2.6.12-rc2 |
1356 |
\ |
0f29b966d [SCSI] FC transpo... |
1357 1358 1359 1360 |
val = simple_strtoul(buf, &cp, 0); \ if (*cp && (*cp != ' ')) \ return -EINVAL; \ |
1da177e4c Linux-2.6.12-rc2 |
1361 1362 1363 |
i->f->set_host_##field(shost, val); \ return count; \ } |
b8d082101 [SCSI] fc transpo... |
1364 1365 |
#define fc_host_store_str_function(field, slen) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1366 1367 1368 |
store_fc_host_##field(struct device *dev, \ struct device_attribute *attr, \ const char *buf, size_t count) \ |
b8d082101 [SCSI] fc transpo... |
1369 |
{ \ |
ee959b00c SCSI: convert str... |
1370 |
struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
b8d082101 [SCSI] fc transpo... |
1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 |
struct fc_internal *i = to_fc_internal(shost->transportt); \ unsigned int cnt=count; \ \ /* count may include a LF at end of string */ \ if (buf[cnt-1] == ' ') \ cnt--; \ if (cnt > ((slen) - 1)) \ return -EINVAL; \ memcpy(fc_host_##field(shost), buf, cnt); \ i->f->set_host_##field(shost); \ return count; \ } |
1da177e4c Linux-2.6.12-rc2 |
1384 1385 |
#define fc_host_rd_attr(field, format_string, sz) \ fc_host_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
1386 |
static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
1387 1388 1389 1390 |
show_fc_host_##field, NULL) #define fc_host_rd_attr_cast(field, format_string, sz, cast) \ fc_host_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
1391 |
static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
1392 1393 1394 1395 1396 |
show_fc_host_##field, NULL) #define fc_host_rw_attr(field, format_string, sz) \ fc_host_show_function(field, format_string, sz, ) \ fc_host_store_function(field) \ |
ee959b00c SCSI: convert str... |
1397 |
static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
1da177e4c Linux-2.6.12-rc2 |
1398 1399 1400 1401 1402 |
show_fc_host_##field, \ store_fc_host_##field) #define fc_host_rd_enum_attr(title, maxlen) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1403 1404 |
show_fc_host_##title (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
1405 |
{ \ |
ee959b00c SCSI: convert str... |
1406 |
struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 |
struct fc_internal *i = to_fc_internal(shost->transportt); \ const char *name; \ if (i->f->get_host_##title) \ i->f->get_host_##title(shost); \ name = get_fc_##title##_name(fc_host_##title(shost)); \ if (!name) \ return -EINVAL; \ return snprintf(buf, maxlen, "%s ", name); \ } \ |
ee959b00c SCSI: convert str... |
1417 |
static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
1da177e4c Linux-2.6.12-rc2 |
1418 1419 |
#define SETUP_HOST_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
1420 |
i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
1421 1422 1423 1424 1425 |
i->private_host_attrs[count].attr.mode = S_IRUGO; \ i->private_host_attrs[count].store = NULL; \ i->host_attrs[count] = &i->private_host_attrs[count]; \ if (i->f->show_host_##field) \ count++ |
a53eb5e06 [SCSI] FC Transpo... |
1426 |
#define SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
ee959b00c SCSI: convert str... |
1427 |
i->private_host_attrs[count] = device_attr_host_##field; \ |
a53eb5e06 [SCSI] FC Transpo... |
1428 1429 1430 1431 |
i->private_host_attrs[count].attr.mode = S_IRUGO; \ i->private_host_attrs[count].store = NULL; \ i->host_attrs[count] = &i->private_host_attrs[count]; \ count++ |
1da177e4c Linux-2.6.12-rc2 |
1432 |
#define SETUP_HOST_ATTRIBUTE_RW(field) \ |
ee959b00c SCSI: convert str... |
1433 |
i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 |
if (!i->f->set_host_##field) { \ i->private_host_attrs[count].attr.mode = S_IRUGO; \ i->private_host_attrs[count].store = NULL; \ } \ i->host_attrs[count] = &i->private_host_attrs[count]; \ if (i->f->show_host_##field) \ count++ #define fc_private_host_show_function(field, format_string, sz, cast) \ static ssize_t \ |
ee959b00c SCSI: convert str... |
1445 1446 |
show_fc_host_##field (struct device *dev, \ struct device_attribute *attr, char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
1447 |
{ \ |
ee959b00c SCSI: convert str... |
1448 |
struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
1da177e4c Linux-2.6.12-rc2 |
1449 1450 1451 1452 1453 |
return snprintf(buf, sz, format_string, cast fc_host_##field(shost)); \ } #define fc_private_host_rd_attr(field, format_string, sz) \ fc_private_host_show_function(field, format_string, sz, ) \ |
ee959b00c SCSI: convert str... |
1454 |
static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
1455 1456 1457 1458 |
show_fc_host_##field, NULL) #define fc_private_host_rd_attr_cast(field, format_string, sz, cast) \ fc_private_host_show_function(field, format_string, sz, (cast)) \ |
ee959b00c SCSI: convert str... |
1459 |
static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
1da177e4c Linux-2.6.12-rc2 |
1460 1461 1462 |
show_fc_host_##field, NULL) #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ |
ee959b00c SCSI: convert str... |
1463 |
i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
1464 1465 1466 1467 1468 1469 |
i->private_host_attrs[count].attr.mode = S_IRUGO; \ i->private_host_attrs[count].store = NULL; \ i->host_attrs[count] = &i->private_host_attrs[count]; \ count++ #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ |
91ca7b01e [SCSI] Add an 'Is... |
1470 |
{ \ |
ee959b00c SCSI: convert str... |
1471 |
i->private_host_attrs[count] = device_attr_host_##field; \ |
1da177e4c Linux-2.6.12-rc2 |
1472 |
i->host_attrs[count] = &i->private_host_attrs[count]; \ |
91ca7b01e [SCSI] Add an 'Is... |
1473 1474 |
count++; \ } |
1da177e4c Linux-2.6.12-rc2 |
1475 1476 1477 1478 1479 |
/* Fixed Host Attributes */ static ssize_t |
ee959b00c SCSI: convert str... |
1480 1481 |
show_fc_host_supported_classes (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1482 |
{ |
ee959b00c SCSI: convert str... |
1483 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1484 1485 1486 1487 1488 1489 1490 |
if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) return snprintf(buf, 20, "unspecified "); return get_fc_cos_names(fc_host_supported_classes(shost), buf); } |
ee959b00c SCSI: convert str... |
1491 |
static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
1492 1493 1494 |
show_fc_host_supported_classes, NULL); static ssize_t |
ee959b00c SCSI: convert str... |
1495 1496 |
show_fc_host_supported_fc4s (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1497 |
{ |
ee959b00c SCSI: convert str... |
1498 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1499 1500 |
return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); } |
ee959b00c SCSI: convert str... |
1501 |
static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
1502 1503 1504 |
show_fc_host_supported_fc4s, NULL); static ssize_t |
ee959b00c SCSI: convert str... |
1505 1506 |
show_fc_host_supported_speeds (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1507 |
{ |
ee959b00c SCSI: convert str... |
1508 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1509 1510 1511 1512 1513 1514 1515 |
if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) return snprintf(buf, 20, "unknown "); return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); } |
ee959b00c SCSI: convert str... |
1516 |
static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
1517 1518 1519 1520 1521 1522 1523 |
show_fc_host_supported_speeds, NULL); fc_private_host_rd_attr_cast(node_name, "0x%llx ", 20, unsigned long long); fc_private_host_rd_attr_cast(port_name, "0x%llx ", 20, unsigned long long); |
6b7281d0a [SCSI] fc transpo... |
1524 1525 1526 |
fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx ", 20, unsigned long long); |
1da177e4c Linux-2.6.12-rc2 |
1527 1528 |
fc_private_host_rd_attr(maxframe_size, "%u bytes ", 20); |
a53eb5e06 [SCSI] FC Transpo... |
1529 1530 |
fc_private_host_rd_attr(max_npiv_vports, "%u ", 20); |
1da177e4c Linux-2.6.12-rc2 |
1531 1532 1533 1534 1535 1536 1537 |
fc_private_host_rd_attr(serial_number, "%s ", (FC_SERIAL_NUMBER_SIZE +1)); /* Dynamic Host Attributes */ static ssize_t |
ee959b00c SCSI: convert str... |
1538 1539 |
show_fc_host_active_fc4s (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1540 |
{ |
ee959b00c SCSI: convert str... |
1541 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1542 1543 1544 1545 1546 1547 1548 |
struct fc_internal *i = to_fc_internal(shost->transportt); if (i->f->get_host_active_fc4s) i->f->get_host_active_fc4s(shost); return (ssize_t)show_fc_fc4s(buf, fc_host_active_fc4s(shost)); } |
ee959b00c SCSI: convert str... |
1549 |
static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
1550 1551 1552 |
show_fc_host_active_fc4s, NULL); static ssize_t |
ee959b00c SCSI: convert str... |
1553 1554 |
show_fc_host_speed (struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1555 |
{ |
ee959b00c SCSI: convert str... |
1556 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 |
struct fc_internal *i = to_fc_internal(shost->transportt); if (i->f->get_host_speed) i->f->get_host_speed(shost); if (fc_host_speed(shost) == FC_PORTSPEED_UNKNOWN) return snprintf(buf, 20, "unknown "); return get_fc_port_speed_names(fc_host_speed(shost), buf); } |
ee959b00c SCSI: convert str... |
1568 |
static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
1da177e4c Linux-2.6.12-rc2 |
1569 1570 1571 1572 1573 1574 1575 1576 1577 |
show_fc_host_speed, NULL); fc_host_rd_attr(port_id, "0x%06x ", 20); fc_host_rd_enum_attr(port_type, FC_PORTTYPE_MAX_NAMELEN); fc_host_rd_enum_attr(port_state, FC_PORTSTATE_MAX_NAMELEN); fc_host_rd_attr_cast(fabric_name, "0x%llx ", 20, unsigned long long); |
016131b8f [SCSI] fc transpo... |
1578 1579 |
fc_host_rd_attr(symbolic_name, "%s ", FC_SYMBOLIC_NAME_SIZE + 1); |
1da177e4c Linux-2.6.12-rc2 |
1580 |
|
b8d082101 [SCSI] fc transpo... |
1581 1582 1583 1584 |
fc_private_host_show_function(system_hostname, "%s ", FC_SYMBOLIC_NAME_SIZE + 1, ) fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) |
ee959b00c SCSI: convert str... |
1585 |
static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
b8d082101 [SCSI] fc transpo... |
1586 |
show_fc_host_system_hostname, store_fc_host_system_hostname); |
1da177e4c Linux-2.6.12-rc2 |
1587 1588 1589 1590 |
/* Private Host Attributes */ static ssize_t |
ee959b00c SCSI: convert str... |
1591 1592 |
show_fc_private_host_tgtid_bind_type(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4c Linux-2.6.12-rc2 |
1593 |
{ |
ee959b00c SCSI: convert str... |
1594 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1595 1596 1597 1598 1599 1600 1601 1602 |
const char *name; name = get_fc_tgtid_bind_type_name(fc_host_tgtid_bind_type(shost)); if (!name) return -EINVAL; return snprintf(buf, FC_BINDTYPE_MAX_NAMELEN, "%s ", name); } |
d16794f6a [SCSI] FW: [PATCH... |
1603 1604 |
#define get_list_head_entry(pos, head, member) \ pos = list_entry((head)->next, typeof(*pos), member) |
1da177e4c Linux-2.6.12-rc2 |
1605 |
static ssize_t |
ee959b00c SCSI: convert str... |
1606 1607 |
store_fc_private_host_tgtid_bind_type(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
1608 |
{ |
ee959b00c SCSI: convert str... |
1609 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
d16794f6a [SCSI] FW: [PATCH... |
1610 |
struct fc_rport *rport; |
1da177e4c Linux-2.6.12-rc2 |
1611 1612 1613 1614 1615 1616 1617 1618 1619 |
enum fc_tgtid_binding_type val; unsigned long flags; if (get_fc_tgtid_bind_type_match(buf, &val)) return -EINVAL; /* if changing bind type, purge all unused consistent bindings */ if (val != fc_host_tgtid_bind_type(shost)) { spin_lock_irqsave(shost->host_lock, flags); |
d16794f6a [SCSI] FW: [PATCH... |
1620 1621 1622 |
while (!list_empty(&fc_host_rport_bindings(shost))) { get_list_head_entry(rport, &fc_host_rport_bindings(shost), peers); |
aedf34977 [SCSI] FC transpo... |
1623 1624 1625 |
list_del(&rport->peers); rport->port_state = FC_PORTSTATE_DELETED; fc_queue_work(shost, &rport->rport_delete_work); |
d16794f6a [SCSI] FW: [PATCH... |
1626 |
} |
1da177e4c Linux-2.6.12-rc2 |
1627 1628 1629 1630 1631 1632 |
spin_unlock_irqrestore(shost->host_lock, flags); } fc_host_tgtid_bind_type(shost) = val; return count; } |
ee959b00c SCSI: convert str... |
1633 |
static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
1da177e4c Linux-2.6.12-rc2 |
1634 1635 |
show_fc_private_host_tgtid_bind_type, store_fc_private_host_tgtid_bind_type); |
91ca7b01e [SCSI] Add an 'Is... |
1636 |
static ssize_t |
ee959b00c SCSI: convert str... |
1637 1638 |
store_fc_private_host_issue_lip(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
91ca7b01e [SCSI] Add an 'Is... |
1639 |
{ |
ee959b00c SCSI: convert str... |
1640 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
91ca7b01e [SCSI] Add an 'Is... |
1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 |
struct fc_internal *i = to_fc_internal(shost->transportt); int ret; /* ignore any data value written to the attribute */ if (i->f->issue_fc_host_lip) { ret = i->f->issue_fc_host_lip(shost); return ret ? ret: count; } return -ENOENT; } |
ee959b00c SCSI: convert str... |
1652 |
static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
91ca7b01e [SCSI] Add an 'Is... |
1653 |
store_fc_private_host_issue_lip); |
43ca910a9 [SCSI] fc class: ... |
1654 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 |
static ssize_t store_fc_private_host_dev_loss_tmo(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { struct Scsi_Host *shost = transport_class_to_shost(dev); struct fc_host_attrs *fc_host = shost_to_fc_host(shost); struct fc_rport *rport; unsigned long val, flags; int rc; rc = fc_str_to_dev_loss(buf, &val); if (rc) return rc; fc_host_dev_loss_tmo(shost) = val; spin_lock_irqsave(shost->host_lock, flags); list_for_each_entry(rport, &fc_host->rports, peers) fc_rport_set_dev_loss_tmo(rport, val); spin_unlock_irqrestore(shost->host_lock, flags); return count; } |
a53eb5e06 [SCSI] FC Transpo... |
1676 |
|
43ca910a9 [SCSI] fc class: ... |
1677 1678 1679 1680 1681 1682 1683 1684 |
fc_private_host_show_function(dev_loss_tmo, "%d ", 20, ); static FC_DEVICE_ATTR(host, dev_loss_tmo, S_IRUGO | S_IWUSR, show_fc_host_dev_loss_tmo, store_fc_private_host_dev_loss_tmo); fc_private_host_rd_attr(npiv_vports_inuse, "%u ", 20); |
a53eb5e06 [SCSI] FC Transpo... |
1685 |
|
1da177e4c Linux-2.6.12-rc2 |
1686 1687 1688 1689 1690 1691 |
/* * Host Statistics Management */ /* Show a given an attribute in the statistics group */ static ssize_t |
ee959b00c SCSI: convert str... |
1692 |
fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
1da177e4c Linux-2.6.12-rc2 |
1693 |
{ |
ee959b00c SCSI: convert str... |
1694 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 |
struct fc_internal *i = to_fc_internal(shost->transportt); struct fc_host_statistics *stats; ssize_t ret = -ENOENT; if (offset > sizeof(struct fc_host_statistics) || offset % sizeof(u64) != 0) WARN_ON(1); if (i->f->get_fc_host_stats) { stats = (i->f->get_fc_host_stats)(shost); if (stats) ret = snprintf(buf, 20, "0x%llx ", (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); } return ret; } /* generate a read-only statistics attribute */ #define fc_host_statistic(name) \ |
ee959b00c SCSI: convert str... |
1716 1717 1718 |
static ssize_t show_fcstat_##name(struct device *cd, \ struct device_attribute *attr, \ char *buf) \ |
1da177e4c Linux-2.6.12-rc2 |
1719 1720 1721 1722 |
{ \ return fc_stat_show(cd, buf, \ offsetof(struct fc_host_statistics, name)); \ } \ |
ee959b00c SCSI: convert str... |
1723 |
static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
1da177e4c Linux-2.6.12-rc2 |
1724 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 |
fc_host_statistic(seconds_since_last_reset); fc_host_statistic(tx_frames); fc_host_statistic(tx_words); fc_host_statistic(rx_frames); fc_host_statistic(rx_words); fc_host_statistic(lip_count); fc_host_statistic(nos_count); fc_host_statistic(error_frames); fc_host_statistic(dumped_frames); fc_host_statistic(link_failure_count); fc_host_statistic(loss_of_sync_count); fc_host_statistic(loss_of_signal_count); fc_host_statistic(prim_seq_protocol_err_count); fc_host_statistic(invalid_tx_word_count); fc_host_statistic(invalid_crc_count); fc_host_statistic(fcp_input_requests); fc_host_statistic(fcp_output_requests); fc_host_statistic(fcp_control_requests); fc_host_statistic(fcp_input_megabytes); fc_host_statistic(fcp_output_megabytes); static ssize_t |
ee959b00c SCSI: convert str... |
1747 1748 |
fc_reset_statistics(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4c Linux-2.6.12-rc2 |
1749 |
{ |
ee959b00c SCSI: convert str... |
1750 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
1da177e4c Linux-2.6.12-rc2 |
1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 |
struct fc_internal *i = to_fc_internal(shost->transportt); /* ignore any data value written to the attribute */ if (i->f->reset_fc_host_stats) { i->f->reset_fc_host_stats(shost); return count; } return -ENOENT; } |
ee959b00c SCSI: convert str... |
1761 |
static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
1da177e4c Linux-2.6.12-rc2 |
1762 |
fc_reset_statistics); |
1da177e4c Linux-2.6.12-rc2 |
1763 |
static struct attribute *fc_statistics_attrs[] = { |
ee959b00c SCSI: convert str... |
1764 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784 |
&device_attr_host_seconds_since_last_reset.attr, &device_attr_host_tx_frames.attr, &device_attr_host_tx_words.attr, &device_attr_host_rx_frames.attr, &device_attr_host_rx_words.attr, &device_attr_host_lip_count.attr, &device_attr_host_nos_count.attr, &device_attr_host_error_frames.attr, &device_attr_host_dumped_frames.attr, &device_attr_host_link_failure_count.attr, &device_attr_host_loss_of_sync_count.attr, &device_attr_host_loss_of_signal_count.attr, &device_attr_host_prim_seq_protocol_err_count.attr, &device_attr_host_invalid_tx_word_count.attr, &device_attr_host_invalid_crc_count.attr, &device_attr_host_fcp_input_requests.attr, &device_attr_host_fcp_output_requests.attr, &device_attr_host_fcp_control_requests.attr, &device_attr_host_fcp_input_megabytes.attr, &device_attr_host_fcp_output_megabytes.attr, &device_attr_host_reset_statistics.attr, |
1da177e4c Linux-2.6.12-rc2 |
1785 1786 1787 1788 1789 1790 1791 |
NULL }; static struct attribute_group fc_statistics_group = { .name = "statistics", .attrs = fc_statistics_attrs, }; |
a53eb5e06 [SCSI] FC Transpo... |
1792 1793 1794 1795 1796 1797 1798 1799 1800 1801 1802 1803 1804 |
/* Host Vport Attributes */ static int fc_parse_wwn(const char *ns, u64 *nm) { unsigned int i, j; u8 wwn[8]; memset(wwn, 0, sizeof(wwn)); /* Validate and store the new name */ for (i=0, j=0; i < 16; i++) { |
ecc309900 drivers: scsi: us... |
1805 1806 1807 1808 1809 |
int value; value = hex_to_bin(*ns++); if (value >= 0) j = (j << 4) | value; |
a53eb5e06 [SCSI] FC Transpo... |
1810 1811 1812 1813 1814 1815 1816 1817 1818 1819 1820 1821 1822 1823 1824 1825 1826 1827 1828 1829 1830 |
else return -EINVAL; if (i % 2) { wwn[i/2] = j & 0xff; j = 0; } } *nm = wwn_to_u64(wwn); return 0; } /* * "Short-cut" sysfs variable to create a new vport on a FC Host. * Input is a string of the form "<WWPN>:<WWNN>". Other attributes * will default to a NPIV-based FCP_Initiator; The WWNs are specified * as hex characters, and may *not* contain any prefixes (e.g. 0x, x, etc) */ static ssize_t |
ee959b00c SCSI: convert str... |
1831 1832 |
store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
a53eb5e06 [SCSI] FC Transpo... |
1833 |
{ |
ee959b00c SCSI: convert str... |
1834 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e06 [SCSI] FC Transpo... |
1835 1836 1837 1838 1839 1840 1841 1842 1843 1844 1845 1846 1847 1848 1849 1850 1851 1852 1853 1854 1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 |
struct fc_vport_identifiers vid; struct fc_vport *vport; unsigned int cnt=count; int stat; memset(&vid, 0, sizeof(vid)); /* count may include a LF at end of string */ if (buf[cnt-1] == ' ') cnt--; /* validate we have enough characters for WWPN */ if ((cnt != (16+1+16)) || (buf[16] != ':')) return -EINVAL; stat = fc_parse_wwn(&buf[0], &vid.port_name); if (stat) return stat; stat = fc_parse_wwn(&buf[17], &vid.node_name); if (stat) return stat; vid.roles = FC_PORT_ROLE_FCP_INITIATOR; vid.vport_type = FC_PORTTYPE_NPIV; /* vid.symbolic_name is already zero/NULL's */ vid.disable = false; /* always enabled */ /* we only allow support on Channel 0 !!! */ |
a30c3f69e [SCSI] fc_transpo... |
1865 |
stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
a53eb5e06 [SCSI] FC Transpo... |
1866 1867 |
return stat ? stat : count; } |
ee959b00c SCSI: convert str... |
1868 |
static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
a53eb5e06 [SCSI] FC Transpo... |
1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 |
store_fc_host_vport_create); /* * "Short-cut" sysfs variable to delete a vport on a FC Host. * Vport is identified by a string containing "<WWPN>:<WWNN>". * The WWNs are specified as hex characters, and may *not* contain * any prefixes (e.g. 0x, x, etc) */ static ssize_t |
ee959b00c SCSI: convert str... |
1879 1880 |
store_fc_host_vport_delete(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
a53eb5e06 [SCSI] FC Transpo... |
1881 |
{ |
ee959b00c SCSI: convert str... |
1882 |
struct Scsi_Host *shost = transport_class_to_shost(dev); |
a53eb5e06 [SCSI] FC Transpo... |
1883 1884 1885 1886 1887 1888 1889 1890 1891 1892 1893 1894 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 |
struct fc_host_attrs *fc_host = shost_to_fc_host(shost); struct fc_vport *vport; u64 wwpn, wwnn; unsigned long flags; unsigned int cnt=count; int stat, match; /* count may include a LF at end of string */ if (buf[cnt-1] == ' ') cnt--; /* validate we have enough characters for WWPN */ if ((cnt != (16+1+16)) || (buf[16] != ':')) return -EINVAL; stat = fc_parse_wwn(&buf[0], &wwpn); if (stat) return stat; stat = fc_parse_wwn(&buf[17], &wwnn); if (stat) return stat; spin_lock_irqsave(shost->host_lock, flags); match = 0; /* we only allow support on Channel 0 !!! */ list_for_each_entry(vport, &fc_host->vports, peers) { if ((vport->channel == 0) && (vport->port_name == wwpn) && (vport->node_name == wwnn)) { |
0d9dc7c8b [SCSI] scsi_trans... |
1913 1914 1915 |
if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) break; vport->flags |= FC_VPORT_DELETING; |
a53eb5e06 [SCSI] FC Transpo... |
1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 |
match = 1; break; } } spin_unlock_irqrestore(shost->host_lock, flags); if (!match) return -ENODEV; stat = fc_vport_terminate(vport); return stat ? stat : count; } |
ee959b00c SCSI: convert str... |
1928 |
static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
a53eb5e06 [SCSI] FC Transpo... |
1929 |
store_fc_host_vport_delete); |
1da177e4c Linux-2.6.12-rc2 |
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 |
static int fc_host_match(struct attribute_container *cont, struct device *dev) { struct Scsi_Host *shost; struct fc_internal *i; if (!scsi_is_host_device(dev)) return 0; shost = dev_to_shost(dev); if (!shost->transportt || shost->transportt->host_attrs.ac.class != &fc_host_class.class) return 0; i = to_fc_internal(shost->transportt); return &i->t.host_attrs.ac == cont; } static int fc_target_match(struct attribute_container *cont, struct device *dev) { struct Scsi_Host *shost; struct fc_internal *i; if (!scsi_is_target_device(dev)) return 0; shost = dev_to_shost(dev->parent); if (!shost->transportt || shost->transportt->host_attrs.ac.class != &fc_host_class.class) return 0; i = to_fc_internal(shost->transportt); return &i->t.target_attrs.ac == cont; } static void fc_rport_dev_release(struct device *dev) { struct fc_rport *rport = dev_to_rport(dev); put_device(dev->parent); kfree(rport); } int scsi_is_fc_rport(const struct device *dev) { return dev->release == fc_rport_dev_release; } EXPORT_SYMBOL(scsi_is_fc_rport); static int fc_rport_match(struct attribute_container *cont, struct device *dev) { struct Scsi_Host *shost; struct fc_internal *i; if (!scsi_is_fc_rport(dev)) return 0; shost = dev_to_shost(dev->parent); if (!shost->transportt || shost->transportt->host_attrs.ac.class != &fc_host_class.class) return 0; i = to_fc_internal(shost->transportt); return &i->rport_attr_cont.ac == cont; } |
5c44cd2af [SCSI] fix target... |
1999 |
|
a53eb5e06 [SCSI] FC Transpo... |
2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 |
static void fc_vport_dev_release(struct device *dev) { struct fc_vport *vport = dev_to_vport(dev); put_device(dev->parent); /* release kobj parent */ kfree(vport); } int scsi_is_fc_vport(const struct device *dev) { return dev->release == fc_vport_dev_release; } EXPORT_SYMBOL(scsi_is_fc_vport); static int fc_vport_match(struct attribute_container *cont, struct device *dev) { struct fc_vport *vport; struct Scsi_Host *shost; struct fc_internal *i; if (!scsi_is_fc_vport(dev)) return 0; vport = dev_to_vport(dev); shost = vport_to_shost(vport); if (!shost->transportt || shost->transportt->host_attrs.ac.class != &fc_host_class.class) return 0; i = to_fc_internal(shost->transportt); return &i->vport_attr_cont.ac == cont; } |
c829c3941 [SCSI] FC transpo... |
2032 2033 |
/** * fc_timed_out - FC Transport I/O timeout intercept handler |
c829c3941 [SCSI] FC transpo... |
2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 2049 2050 2051 2052 |
* @scmd: The SCSI command which timed out * * This routine protects against error handlers getting invoked while a * rport is in a blocked state, typically due to a temporarily loss of * connectivity. If the error handlers are allowed to proceed, requests * to abort i/o, reset the target, etc will likely fail as there is no way * to communicate with the device to perform the requested function. These * failures may result in the midlayer taking the device offline, requiring * manual intervention to restore operation. * * This routine, called whenever an i/o times out, validates the state of * the underlying rport. If the rport is blocked, it returns * EH_RESET_TIMER, which will continue to reschedule the timeout. * Eventually, either the device will return, or devloss_tmo will fire, * and when the timeout then fires, it will be handled normally. * If the rport is not blocked, normal error handling continues. * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
2053 |
*/ |
242f9dcb8 block: unify requ... |
2054 |
static enum blk_eh_timer_return |
c829c3941 [SCSI] FC transpo... |
2055 2056 2057 2058 2059 |
fc_timed_out(struct scsi_cmnd *scmd) { struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); if (rport->port_state == FC_PORTSTATE_BLOCKED) |
242f9dcb8 block: unify requ... |
2060 |
return BLK_EH_RESET_TIMER; |
c829c3941 [SCSI] FC transpo... |
2061 |
|
242f9dcb8 block: unify requ... |
2062 |
return BLK_EH_NOT_HANDLED; |
c829c3941 [SCSI] FC transpo... |
2063 |
} |
5c44cd2af [SCSI] fix target... |
2064 |
/* |
bda232531 [SCSI] scsi_trans... |
2065 2066 2067 |
* Called by fc_user_scan to locate an rport on the shost that * matches the channel and target id, and invoke scsi_scan_target() * on the rport. |
5c44cd2af [SCSI] fix target... |
2068 |
*/ |
bda232531 [SCSI] scsi_trans... |
2069 2070 |
static void fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, uint lun) |
5c44cd2af [SCSI] fix target... |
2071 2072 |
{ struct fc_rport *rport; |
bda232531 [SCSI] scsi_trans... |
2073 2074 2075 |
unsigned long flags; spin_lock_irqsave(shost->host_lock, flags); |
5c44cd2af [SCSI] fix target... |
2076 |
|
e02f3f592 [SCSI] remove tar... |
2077 2078 2079 |
list_for_each_entry(rport, &fc_host_rports(shost), peers) { if (rport->scsi_target_id == -1) continue; |
5c44cd2af [SCSI] fix target... |
2080 |
|
0d2fcd9f9 [SCSI] fc_transpo... |
2081 2082 |
if (rport->port_state != FC_PORTSTATE_ONLINE) continue; |
bda232531 [SCSI] scsi_trans... |
2083 2084 2085 2086 2087 |
if ((channel == rport->channel) && (id == rport->scsi_target_id)) { spin_unlock_irqrestore(shost->host_lock, flags); scsi_scan_target(&rport->dev, channel, id, lun, 1); return; |
e02f3f592 [SCSI] remove tar... |
2088 2089 |
} } |
bda232531 [SCSI] scsi_trans... |
2090 2091 2092 2093 2094 2095 2096 2097 2098 2099 2100 2101 2102 2103 2104 2105 2106 2107 2108 2109 2110 2111 2112 2113 2114 2115 2116 2117 2118 2119 2120 2121 2122 2123 2124 2125 2126 2127 2128 |
spin_unlock_irqrestore(shost->host_lock, flags); } /* * Called via sysfs scan routines. Necessary, as the FC transport * wants to place all target objects below the rport object. So this * routine must invoke the scsi_scan_target() routine with the rport * object as the parent. */ static int fc_user_scan(struct Scsi_Host *shost, uint channel, uint id, uint lun) { uint chlo, chhi; uint tgtlo, tgthi; if (((channel != SCAN_WILD_CARD) && (channel > shost->max_channel)) || ((id != SCAN_WILD_CARD) && (id >= shost->max_id)) || ((lun != SCAN_WILD_CARD) && (lun > shost->max_lun))) return -EINVAL; if (channel == SCAN_WILD_CARD) { chlo = 0; chhi = shost->max_channel + 1; } else { chlo = channel; chhi = channel + 1; } if (id == SCAN_WILD_CARD) { tgtlo = 0; tgthi = shost->max_id; } else { tgtlo = id; tgthi = id + 1; } for ( ; chlo < chhi; chlo++) for ( ; tgtlo < tgthi; tgtlo++) fc_user_scan_tgt(shost, chlo, tgtlo, lun); |
e02f3f592 [SCSI] remove tar... |
2129 |
return 0; |
5c44cd2af [SCSI] fix target... |
2130 |
} |
7525236d0 [SCSI] fc_transpo... |
2131 2132 2133 2134 2135 2136 2137 2138 2139 2140 2141 2142 |
static int fc_tsk_mgmt_response(struct Scsi_Host *shost, u64 nexus, u64 tm_id, int result) { struct fc_internal *i = to_fc_internal(shost->transportt); return i->f->tsk_mgmt_response(shost, nexus, tm_id, result); } static int fc_it_nexus_response(struct Scsi_Host *shost, u64 nexus, int result) { struct fc_internal *i = to_fc_internal(shost->transportt); return i->f->it_nexus_response(shost, nexus, result); } |
1da177e4c Linux-2.6.12-rc2 |
2143 2144 2145 |
struct scsi_transport_template * fc_attach_transport(struct fc_function_template *ft) { |
1da177e4c Linux-2.6.12-rc2 |
2146 |
int count; |
24669f75a [SCSI] SCSI core ... |
2147 2148 |
struct fc_internal *i = kzalloc(sizeof(struct fc_internal), GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2149 2150 2151 |
if (unlikely(!i)) return NULL; |
1da177e4c Linux-2.6.12-rc2 |
2152 2153 2154 2155 2156 2157 2158 2159 2160 2161 2162 2163 2164 2165 2166 2167 2168 2169 |
i->t.target_attrs.ac.attrs = &i->starget_attrs[0]; i->t.target_attrs.ac.class = &fc_transport_class.class; i->t.target_attrs.ac.match = fc_target_match; i->t.target_size = sizeof(struct fc_starget_attrs); transport_container_register(&i->t.target_attrs); i->t.host_attrs.ac.attrs = &i->host_attrs[0]; i->t.host_attrs.ac.class = &fc_host_class.class; i->t.host_attrs.ac.match = fc_host_match; i->t.host_size = sizeof(struct fc_host_attrs); if (ft->get_fc_host_stats) i->t.host_attrs.statistics = &fc_statistics_group; transport_container_register(&i->t.host_attrs); i->rport_attr_cont.ac.attrs = &i->rport_attrs[0]; i->rport_attr_cont.ac.class = &fc_rport_class.class; i->rport_attr_cont.ac.match = fc_rport_match; transport_container_register(&i->rport_attr_cont); |
a53eb5e06 [SCSI] FC Transpo... |
2170 2171 2172 2173 |
i->vport_attr_cont.ac.attrs = &i->vport_attrs[0]; i->vport_attr_cont.ac.class = &fc_vport_class.class; i->vport_attr_cont.ac.match = fc_vport_match; transport_container_register(&i->vport_attr_cont); |
1da177e4c Linux-2.6.12-rc2 |
2174 2175 2176 2177 |
i->f = ft; /* Transport uses the shost workq for scsi scanning */ i->t.create_work_queue = 1; |
5c44cd2af [SCSI] fix target... |
2178 |
|
c829c3941 [SCSI] FC transpo... |
2179 |
i->t.eh_timed_out = fc_timed_out; |
e02f3f592 [SCSI] remove tar... |
2180 |
i->t.user_scan = fc_user_scan; |
9ef3e4a45 [SCSI] fc_transpo... |
2181 |
|
7525236d0 [SCSI] fc_transpo... |
2182 2183 2184 |
/* target-mode drivers' functions */ i->t.tsk_mgmt_response = fc_tsk_mgmt_response; i->t.it_nexus_response = fc_it_nexus_response; |
1da177e4c Linux-2.6.12-rc2 |
2185 2186 2187 2188 2189 2190 2191 2192 2193 2194 2195 2196 2197 2198 2199 2200 2201 2202 2203 |
/* * Setup SCSI Target Attributes. */ count = 0; SETUP_STARGET_ATTRIBUTE_RD(node_name); SETUP_STARGET_ATTRIBUTE_RD(port_name); SETUP_STARGET_ATTRIBUTE_RD(port_id); BUG_ON(count > FC_STARGET_NUM_ATTRS); i->starget_attrs[count] = NULL; /* * Setup SCSI Host Attributes. */ count=0; SETUP_HOST_ATTRIBUTE_RD(node_name); SETUP_HOST_ATTRIBUTE_RD(port_name); |
6b7281d0a [SCSI] fc transpo... |
2204 |
SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
1da177e4c Linux-2.6.12-rc2 |
2205 2206 |
SETUP_HOST_ATTRIBUTE_RD(supported_classes); SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); |
1da177e4c Linux-2.6.12-rc2 |
2207 2208 |
SETUP_HOST_ATTRIBUTE_RD(supported_speeds); SETUP_HOST_ATTRIBUTE_RD(maxframe_size); |
a53eb5e06 [SCSI] FC Transpo... |
2209 2210 2211 2212 |
if (ft->vport_create) { SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); } |
1da177e4c Linux-2.6.12-rc2 |
2213 2214 2215 2216 2217 2218 2219 2220 |
SETUP_HOST_ATTRIBUTE_RD(serial_number); SETUP_HOST_ATTRIBUTE_RD(port_id); SETUP_HOST_ATTRIBUTE_RD(port_type); SETUP_HOST_ATTRIBUTE_RD(port_state); SETUP_HOST_ATTRIBUTE_RD(active_fc4s); SETUP_HOST_ATTRIBUTE_RD(speed); SETUP_HOST_ATTRIBUTE_RD(fabric_name); |
016131b8f [SCSI] fc transpo... |
2221 |
SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
b8d082101 [SCSI] fc transpo... |
2222 |
SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
1da177e4c Linux-2.6.12-rc2 |
2223 2224 |
/* Transport-managed attributes */ |
43ca910a9 [SCSI] fc class: ... |
2225 |
SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
1da177e4c Linux-2.6.12-rc2 |
2226 |
SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
91ca7b01e [SCSI] Add an 'Is... |
2227 2228 |
if (ft->issue_fc_host_lip) SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); |
a53eb5e06 [SCSI] FC Transpo... |
2229 2230 2231 2232 |
if (ft->vport_create) SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); if (ft->vport_delete) SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); |
1da177e4c Linux-2.6.12-rc2 |
2233 2234 2235 2236 2237 2238 2239 2240 2241 2242 2243 2244 2245 2246 2247 2248 2249 2250 |
BUG_ON(count > FC_HOST_NUM_ATTRS); i->host_attrs[count] = NULL; /* * Setup Remote Port Attributes. */ count=0; SETUP_RPORT_ATTRIBUTE_RD(maxframe_size); SETUP_RPORT_ATTRIBUTE_RD(supported_classes); SETUP_RPORT_ATTRIBUTE_RW(dev_loss_tmo); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(node_name); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_name); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_id); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(roles); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(port_state); SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); |
fff9d40ce [SCSI] fc class: ... |
2251 |
SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
1da177e4c Linux-2.6.12-rc2 |
2252 2253 2254 2255 |
BUG_ON(count > FC_RPORT_NUM_ATTRS); i->rport_attrs[count] = NULL; |
a53eb5e06 [SCSI] FC Transpo... |
2256 2257 2258 2259 2260 2261 2262 2263 2264 2265 2266 2267 2268 2269 2270 2271 2272 |
/* * Setup Virtual Port Attributes. */ count=0; SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_state); SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_last_state); SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(node_name); SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(port_name); SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(roles); SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(vport_type); SETUP_VPORT_ATTRIBUTE_RW(symbolic_name); SETUP_VPORT_ATTRIBUTE_WR(vport_delete); SETUP_VPORT_ATTRIBUTE_WR(vport_disable); BUG_ON(count > FC_VPORT_NUM_ATTRS); i->vport_attrs[count] = NULL; |
1da177e4c Linux-2.6.12-rc2 |
2273 2274 2275 2276 2277 2278 2279 2280 2281 2282 2283 |
return &i->t; } EXPORT_SYMBOL(fc_attach_transport); void fc_release_transport(struct scsi_transport_template *t) { struct fc_internal *i = to_fc_internal(t); transport_container_unregister(&i->t.target_attrs); transport_container_unregister(&i->t.host_attrs); transport_container_unregister(&i->rport_attr_cont); |
a53eb5e06 [SCSI] FC Transpo... |
2284 |
transport_container_unregister(&i->vport_attr_cont); |
1da177e4c Linux-2.6.12-rc2 |
2285 2286 2287 2288 |
kfree(i); } EXPORT_SYMBOL(fc_release_transport); |
aedf34977 [SCSI] FC transpo... |
2289 2290 2291 2292 2293 2294 |
/** * fc_queue_work - Queue work to the fc_host workqueue. * @shost: Pointer to Scsi_Host bound to fc_host. * @work: Work to queue for execution. * * Return value: |
a0785edff [SCSI] fc transpo... |
2295 2296 2297 |
* 1 - work queued for execution * 0 - work is already queued * -EINVAL - work queue doesn't exist |
eb44820c2 [SCSI] Add Docume... |
2298 |
*/ |
aedf34977 [SCSI] FC transpo... |
2299 2300 2301 2302 2303 2304 2305 2306 2307 2308 2309 2310 2311 2312 2313 2314 2315 2316 2317 |
static int fc_queue_work(struct Scsi_Host *shost, struct work_struct *work) { if (unlikely(!fc_host_work_q(shost))) { printk(KERN_ERR "ERROR: FC host '%s' attempted to queue work, " "when no workqueue created. ", shost->hostt->name); dump_stack(); return -EINVAL; } return queue_work(fc_host_work_q(shost), work); } /** * fc_flush_work - Flush a fc_host's workqueue. * @shost: Pointer to Scsi_Host bound to fc_host. |
eb44820c2 [SCSI] Add Docume... |
2318 |
*/ |
aedf34977 [SCSI] FC transpo... |
2319 2320 2321 2322 2323 2324 2325 2326 2327 2328 2329 2330 2331 2332 2333 2334 2335 2336 2337 2338 2339 2340 |
static void fc_flush_work(struct Scsi_Host *shost) { if (!fc_host_work_q(shost)) { printk(KERN_ERR "ERROR: FC host '%s' attempted to flush work, " "when no workqueue created. ", shost->hostt->name); dump_stack(); return; } flush_workqueue(fc_host_work_q(shost)); } /** * fc_queue_devloss_work - Schedule work for the fc_host devloss workqueue. * @shost: Pointer to Scsi_Host bound to fc_host. * @work: Work to queue for execution. * @delay: jiffies to delay the work queuing * * Return value: |
0f29b966d [SCSI] FC transpo... |
2341 |
* 1 on success / 0 already queued / < 0 for error |
eb44820c2 [SCSI] Add Docume... |
2342 |
*/ |
aedf34977 [SCSI] FC transpo... |
2343 |
static int |
c4028958b WorkStruct: make ... |
2344 |
fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
aedf34977 [SCSI] FC transpo... |
2345 2346 2347 2348 2349 2350 2351 2352 2353 2354 2355 2356 2357 2358 2359 2360 2361 2362 |
unsigned long delay) { if (unlikely(!fc_host_devloss_work_q(shost))) { printk(KERN_ERR "ERROR: FC host '%s' attempted to queue work, " "when no workqueue created. ", shost->hostt->name); dump_stack(); return -EINVAL; } return queue_delayed_work(fc_host_devloss_work_q(shost), work, delay); } /** * fc_flush_devloss - Flush a fc_host's devloss workqueue. * @shost: Pointer to Scsi_Host bound to fc_host. |
eb44820c2 [SCSI] Add Docume... |
2363 |
*/ |
aedf34977 [SCSI] FC transpo... |
2364 2365 2366 2367 2368 2369 2370 2371 2372 2373 2374 2375 2376 2377 |
static void fc_flush_devloss(struct Scsi_Host *shost) { if (!fc_host_devloss_work_q(shost)) { printk(KERN_ERR "ERROR: FC host '%s' attempted to flush work, " "when no workqueue created. ", shost->hostt->name); dump_stack(); return; } flush_workqueue(fc_host_devloss_work_q(shost)); } |
1da177e4c Linux-2.6.12-rc2 |
2378 2379 |
/** |
eb44820c2 [SCSI] Add Docume... |
2380 2381 |
* fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. * @shost: Which &Scsi_Host |
1da177e4c Linux-2.6.12-rc2 |
2382 |
* |
25985edce Fix common misspe... |
2383 |
* This routine is expected to be called immediately preceding the |
1da177e4c Linux-2.6.12-rc2 |
2384 2385 2386 |
* a driver's call to scsi_remove_host(). * * WARNING: A driver utilizing the fc_transport, which fails to call |
eb44820c2 [SCSI] Add Docume... |
2387 |
* this routine prior to scsi_remove_host(), will leave dangling |
1da177e4c Linux-2.6.12-rc2 |
2388 2389 2390 2391 2392 |
* objects in /sys/class/fc_remote_ports. Access to any of these * objects can result in a system crash !!! * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
2393 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
2394 2395 2396 |
void fc_remove_host(struct Scsi_Host *shost) { |
a53eb5e06 [SCSI] FC Transpo... |
2397 2398 |
struct fc_vport *vport = NULL, *next_vport = NULL; struct fc_rport *rport = NULL, *next_rport = NULL; |
aedf34977 [SCSI] FC transpo... |
2399 2400 |
struct workqueue_struct *work_q; struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
a53eb5e06 [SCSI] FC Transpo... |
2401 |
unsigned long flags; |
a53eb5e06 [SCSI] FC Transpo... |
2402 2403 2404 2405 |
spin_lock_irqsave(shost->host_lock, flags); /* Remove any vports */ |
9ef3e4a45 [SCSI] fc_transpo... |
2406 2407 |
list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) fc_queue_work(shost, &vport->vport_delete_work); |
1da177e4c Linux-2.6.12-rc2 |
2408 2409 2410 |
/* Remove any remote ports */ list_for_each_entry_safe(rport, next_rport, |
aedf34977 [SCSI] FC transpo... |
2411 2412 2413 2414 2415 |
&fc_host->rports, peers) { list_del(&rport->peers); rport->port_state = FC_PORTSTATE_DELETED; fc_queue_work(shost, &rport->rport_delete_work); } |
1da177e4c Linux-2.6.12-rc2 |
2416 |
list_for_each_entry_safe(rport, next_rport, |
aedf34977 [SCSI] FC transpo... |
2417 2418 2419 2420 2421 |
&fc_host->rport_bindings, peers) { list_del(&rport->peers); rport->port_state = FC_PORTSTATE_DELETED; fc_queue_work(shost, &rport->rport_delete_work); } |
a53eb5e06 [SCSI] FC Transpo... |
2422 |
spin_unlock_irqrestore(shost->host_lock, flags); |
aedf34977 [SCSI] FC transpo... |
2423 2424 2425 2426 2427 2428 2429 2430 2431 2432 2433 2434 2435 2436 2437 2438 |
/* flush all scan work items */ scsi_flush_work(shost); /* flush all stgt delete, and rport delete work items, then kill it */ if (fc_host->work_q) { work_q = fc_host->work_q; fc_host->work_q = NULL; destroy_workqueue(work_q); } /* flush all devloss work items, then kill it */ if (fc_host->devloss_work_q) { work_q = fc_host->devloss_work_q; fc_host->devloss_work_q = NULL; destroy_workqueue(work_q); } |
1da177e4c Linux-2.6.12-rc2 |
2439 2440 |
} EXPORT_SYMBOL(fc_remove_host); |
fff9d40ce [SCSI] fc class: ... |
2441 2442 2443 2444 2445 2446 2447 2448 2449 2450 2451 2452 2453 2454 2455 2456 |
static void fc_terminate_rport_io(struct fc_rport *rport) { struct Scsi_Host *shost = rport_to_shost(rport); struct fc_internal *i = to_fc_internal(shost->transportt); /* Involve the LLDD if possible to terminate all io on the rport. */ if (i->f->terminate_rport_io) i->f->terminate_rport_io(rport); /* * must unblock to flush queued IO. The caller will have set * the port_state or flags, so that fc_remote_port_chkready will * fail IO. */ scsi_target_unblock(&rport->dev); } |
aedf34977 [SCSI] FC transpo... |
2457 2458 |
/** |
25985edce Fix common misspe... |
2459 |
* fc_starget_delete - called to delete the scsi descendants of an rport |
c4028958b WorkStruct: make ... |
2460 |
* @work: remote port to be operated on. |
eb44820c2 [SCSI] Add Docume... |
2461 2462 2463 |
* * Deletes target and all sdevs. */ |
19a7b4aeb [SCSI] update fc_... |
2464 |
static void |
c4028958b WorkStruct: make ... |
2465 |
fc_starget_delete(struct work_struct *work) |
19a7b4aeb [SCSI] update fc_... |
2466 |
{ |
c4028958b WorkStruct: make ... |
2467 2468 |
struct fc_rport *rport = container_of(work, struct fc_rport, stgt_delete_work); |
19a7b4aeb [SCSI] update fc_... |
2469 |
|
fff9d40ce [SCSI] fc class: ... |
2470 |
fc_terminate_rport_io(rport); |
19a7b4aeb [SCSI] update fc_... |
2471 2472 |
scsi_remove_target(&rport->dev); } |
aedf34977 [SCSI] FC transpo... |
2473 2474 2475 |
/** * fc_rport_final_delete - finish rport termination and delete it. |
c4028958b WorkStruct: make ... |
2476 |
* @work: remote port to be deleted. |
eb44820c2 [SCSI] Add Docume... |
2477 |
*/ |
aedf34977 [SCSI] FC transpo... |
2478 |
static void |
c4028958b WorkStruct: make ... |
2479 |
fc_rport_final_delete(struct work_struct *work) |
aedf34977 [SCSI] FC transpo... |
2480 |
{ |
c4028958b WorkStruct: make ... |
2481 2482 |
struct fc_rport *rport = container_of(work, struct fc_rport, rport_delete_work); |
aedf34977 [SCSI] FC transpo... |
2483 2484 |
struct device *dev = &rport->dev; struct Scsi_Host *shost = rport_to_shost(rport); |
0f29b966d [SCSI] FC transpo... |
2485 |
struct fc_internal *i = to_fc_internal(shost->transportt); |
92740b24c [SCSI] fc_transpo... |
2486 |
unsigned long flags; |
8798a694d [SCSI] scsi_trans... |
2487 |
int do_callback = 0; |
aedf34977 [SCSI] FC transpo... |
2488 |
|
112f661d6 [SCSI] scsi_trans... |
2489 |
fc_terminate_rport_io(rport); |
aedf34977 [SCSI] FC transpo... |
2490 |
/* |
9ef3e4a45 [SCSI] fc_transpo... |
2491 |
* if a scan is pending, flush the SCSI Host work_q so that |
aedf34977 [SCSI] FC transpo... |
2492 2493 2494 2495 |
* that we can reclaim the rport scan work element. */ if (rport->flags & FC_RPORT_SCAN_PENDING) scsi_flush_work(shost); |
92740b24c [SCSI] fc_transpo... |
2496 2497 2498 2499 2500 2501 2502 2503 2504 2505 2506 2507 2508 2509 2510 2511 |
/* * Cancel any outstanding timers. These should really exist * only when rmmod'ing the LLDD and we're asking for * immediate termination of the rports */ spin_lock_irqsave(shost->host_lock, flags); if (rport->flags & FC_RPORT_DEVLOSS_PENDING) { spin_unlock_irqrestore(shost->host_lock, flags); if (!cancel_delayed_work(&rport->fail_io_work)) fc_flush_devloss(shost); if (!cancel_delayed_work(&rport->dev_loss_work)) fc_flush_devloss(shost); spin_lock_irqsave(shost->host_lock, flags); rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; } spin_unlock_irqrestore(shost->host_lock, flags); |
0f29b966d [SCSI] FC transpo... |
2512 2513 |
/* Delete SCSI target and sdevs */ if (rport->scsi_target_id != -1) |
c4028958b WorkStruct: make ... |
2514 |
fc_starget_delete(&rport->stgt_delete_work); |
92740b24c [SCSI] fc_transpo... |
2515 2516 2517 2518 |
/* * Notify the driver that the rport is now dead. The LLDD will * also guarantee that any communication to the rport is terminated |
4be98c0ca [SCSI] fc transpo... |
2519 2520 2521 |
* * Avoid this call if we already called it when we preserved the * rport for the binding. |
92740b24c [SCSI] fc_transpo... |
2522 |
*/ |
8798a694d [SCSI] scsi_trans... |
2523 |
spin_lock_irqsave(shost->host_lock, flags); |
4be98c0ca [SCSI] fc transpo... |
2524 |
if (!(rport->flags & FC_RPORT_DEVLOSS_CALLBK_DONE) && |
8798a694d [SCSI] scsi_trans... |
2525 2526 2527 2528 2529 2530 2531 |
(i->f->dev_loss_tmo_callbk)) { rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; do_callback = 1; } spin_unlock_irqrestore(shost->host_lock, flags); if (do_callback) |
0f29b966d [SCSI] FC transpo... |
2532 |
i->f->dev_loss_tmo_callbk(rport); |
0f29b966d [SCSI] FC transpo... |
2533 |
|
9e4f5e296 [SCSI] FC Pass Th... |
2534 |
fc_bsg_remove(rport->rqst_q); |
aedf34977 [SCSI] FC transpo... |
2535 2536 2537 |
transport_remove_device(dev); device_del(dev); transport_destroy_device(dev); |
3bdad7bd2 [SCSI] fc transpo... |
2538 2539 |
put_device(&shost->shost_gendev); /* for fc_host->rport list */ put_device(dev); /* for self-reference */ |
aedf34977 [SCSI] FC transpo... |
2540 |
} |
1da177e4c Linux-2.6.12-rc2 |
2541 2542 2543 2544 2545 2546 2547 2548 2549 2550 2551 2552 |
/** * fc_rport_create - allocates and creates a remote FC port. * @shost: scsi host the remote port is connected to. * @channel: Channel on shost port connected to. * @ids: The world wide names, fc address, and FC4 port * roles for the remote port. * * Allocates and creates the remoter port structure, including the * class and sysfs creation. * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
2553 |
*/ |
44818efba [SCSI] small clea... |
2554 |
static struct fc_rport * |
1da177e4c Linux-2.6.12-rc2 |
2555 2556 2557 |
fc_rport_create(struct Scsi_Host *shost, int channel, struct fc_rport_identifiers *ids) { |
aedf34977 [SCSI] FC transpo... |
2558 |
struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4c Linux-2.6.12-rc2 |
2559 2560 2561 2562 2563 2564 2565 2566 |
struct fc_internal *fci = to_fc_internal(shost->transportt); struct fc_rport *rport; struct device *dev; unsigned long flags; int error; size_t size; size = (sizeof(struct fc_rport) + fci->f->dd_fcrport_size); |
24669f75a [SCSI] SCSI core ... |
2567 |
rport = kzalloc(size, GFP_KERNEL); |
1da177e4c Linux-2.6.12-rc2 |
2568 |
if (unlikely(!rport)) { |
cadbd4a5e [SCSI] replace __... |
2569 2570 |
printk(KERN_ERR "%s: allocation failure ", __func__); |
1da177e4c Linux-2.6.12-rc2 |
2571 2572 |
return NULL; } |
1da177e4c Linux-2.6.12-rc2 |
2573 2574 2575 |
rport->maxframe_size = -1; rport->supported_classes = FC_COS_UNSPECIFIED; |
43ca910a9 [SCSI] fc class: ... |
2576 |
rport->dev_loss_tmo = fc_host->dev_loss_tmo; |
1da177e4c Linux-2.6.12-rc2 |
2577 2578 2579 2580 2581 2582 2583 2584 |
memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); rport->port_id = ids->port_id; rport->roles = ids->roles; rport->port_state = FC_PORTSTATE_ONLINE; if (fci->f->dd_fcrport_size) rport->dd_data = &rport[1]; rport->channel = channel; |
0f29b966d [SCSI] FC transpo... |
2585 |
rport->fast_io_fail_tmo = -1; |
1da177e4c Linux-2.6.12-rc2 |
2586 |
|
c4028958b WorkStruct: make ... |
2587 2588 2589 2590 2591 |
INIT_DELAYED_WORK(&rport->dev_loss_work, fc_timeout_deleted_rport); INIT_DELAYED_WORK(&rport->fail_io_work, fc_timeout_fail_rport_io); INIT_WORK(&rport->scan_work, fc_scsi_scan_rport); INIT_WORK(&rport->stgt_delete_work, fc_starget_delete); INIT_WORK(&rport->rport_delete_work, fc_rport_final_delete); |
1da177e4c Linux-2.6.12-rc2 |
2592 2593 2594 2595 |
spin_lock_irqsave(shost->host_lock, flags); rport->number = fc_host->next_rport_number++; |
a53eb5e06 [SCSI] FC Transpo... |
2596 |
if (rport->roles & FC_PORT_ROLE_FCP_TARGET) |
1da177e4c Linux-2.6.12-rc2 |
2597 2598 2599 |
rport->scsi_target_id = fc_host->next_target_id++; else rport->scsi_target_id = -1; |
aedf34977 [SCSI] FC transpo... |
2600 |
list_add_tail(&rport->peers, &fc_host->rports); |
3bdad7bd2 [SCSI] fc transpo... |
2601 |
get_device(&shost->shost_gendev); /* for fc_host->rport list */ |
1da177e4c Linux-2.6.12-rc2 |
2602 2603 2604 2605 |
spin_unlock_irqrestore(shost->host_lock, flags); dev = &rport->dev; |
3bdad7bd2 [SCSI] fc transpo... |
2606 2607 |
device_initialize(dev); /* takes self reference */ dev->parent = get_device(&shost->shost_gendev); /* parent reference */ |
1da177e4c Linux-2.6.12-rc2 |
2608 |
dev->release = fc_rport_dev_release; |
71610f55f [SCSI] struct dev... |
2609 2610 |
dev_set_name(dev, "rport-%d:%d-%d", shost->host_no, channel, rport->number); |
1da177e4c Linux-2.6.12-rc2 |
2611 2612 2613 2614 2615 2616 2617 2618 2619 2620 |
transport_setup_device(dev); error = device_add(dev); if (error) { printk(KERN_ERR "FC Remote Port device_add failed "); goto delete_rport; } transport_add_device(dev); transport_configure_device(dev); |
9e4f5e296 [SCSI] FC Pass Th... |
2621 2622 |
fc_bsg_rportadd(shost, rport); /* ignore any bsg add error - we just can't do sgio */ |
a53eb5e06 [SCSI] FC Transpo... |
2623 |
if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4c Linux-2.6.12-rc2 |
2624 |
/* initiate a scan of the target */ |
aedf34977 [SCSI] FC transpo... |
2625 |
rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4c Linux-2.6.12-rc2 |
2626 |
scsi_queue_work(shost, &rport->scan_work); |
aedf34977 [SCSI] FC transpo... |
2627 |
} |
1da177e4c Linux-2.6.12-rc2 |
2628 2629 2630 2631 2632 |
return rport; delete_rport: transport_destroy_device(dev); |
1da177e4c Linux-2.6.12-rc2 |
2633 2634 |
spin_lock_irqsave(shost->host_lock, flags); list_del(&rport->peers); |
3bdad7bd2 [SCSI] fc transpo... |
2635 |
put_device(&shost->shost_gendev); /* for fc_host->rport list */ |
1da177e4c Linux-2.6.12-rc2 |
2636 2637 2638 2639 2640 2641 2642 |
spin_unlock_irqrestore(shost->host_lock, flags); put_device(dev->parent); kfree(rport); return NULL; } /** |
eb44820c2 [SCSI] Add Docume... |
2643 |
* fc_remote_port_add - notify fc transport of the existence of a remote FC port. |
1da177e4c Linux-2.6.12-rc2 |
2644 2645 2646 2647 2648 2649 2650 2651 2652 2653 2654 2655 2656 2657 2658 2659 2660 2661 2662 2663 2664 2665 2666 2667 2668 2669 2670 2671 2672 2673 2674 2675 2676 2677 2678 |
* @shost: scsi host the remote port is connected to. * @channel: Channel on shost port connected to. * @ids: The world wide names, fc address, and FC4 port * roles for the remote port. * * The LLDD calls this routine to notify the transport of the existence * of a remote port. The LLDD provides the unique identifiers (wwpn,wwn) * of the port, it's FC address (port_id), and the FC4 roles that are * active for the port. * * For ports that are FCP targets (aka scsi targets), the FC transport * maintains consistent target id bindings on behalf of the LLDD. * A consistent target id binding is an assignment of a target id to * a remote port identifier, which persists while the scsi host is * attached. The remote port can disappear, then later reappear, and * it's target id assignment remains the same. This allows for shifts * in FC addressing (if binding by wwpn or wwnn) with no apparent * changes to the scsi subsystem which is based on scsi host number and * target id values. Bindings are only valid during the attachment of * the scsi host. If the host detaches, then later re-attaches, target * id bindings may change. * * This routine is responsible for returning a remote port structure. * The routine will search the list of remote ports it maintains * internally on behalf of consistent target id mappings. If found, the * remote port structure will be reused. Otherwise, a new remote port * structure will be allocated. * * Whenever a remote port is allocated, a new fc_remote_port class * device is created. * * Should not be called from interrupt context. * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
2679 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
2680 2681 2682 2683 |
struct fc_rport * fc_remote_port_add(struct Scsi_Host *shost, int channel, struct fc_rport_identifiers *ids) { |
19a7b4aeb [SCSI] update fc_... |
2684 |
struct fc_internal *fci = to_fc_internal(shost->transportt); |
aedf34977 [SCSI] FC transpo... |
2685 |
struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4c Linux-2.6.12-rc2 |
2686 2687 2688 |
struct fc_rport *rport; unsigned long flags; int match = 0; |
aedf34977 [SCSI] FC transpo... |
2689 2690 |
/* ensure any stgt delete functions are done */ fc_flush_work(shost); |
19a7b4aeb [SCSI] update fc_... |
2691 2692 2693 2694 2695 2696 |
/* * Search the list of "active" rports, for an rport that has been * deleted, but we've held off the real delete while the target * is in a "blocked" state. */ spin_lock_irqsave(shost->host_lock, flags); |
aedf34977 [SCSI] FC transpo... |
2697 |
list_for_each_entry(rport, &fc_host->rports, peers) { |
19a7b4aeb [SCSI] update fc_... |
2698 2699 2700 |
if ((rport->port_state == FC_PORTSTATE_BLOCKED) && (rport->channel == channel)) { |
aedf34977 [SCSI] FC transpo... |
2701 |
switch (fc_host->tgtid_bind_type) { |
19a7b4aeb [SCSI] update fc_... |
2702 2703 2704 2705 2706 2707 2708 2709 2710 2711 2712 2713 2714 2715 2716 2717 |
case FC_TGTID_BIND_BY_WWPN: case FC_TGTID_BIND_NONE: if (rport->port_name == ids->port_name) match = 1; break; case FC_TGTID_BIND_BY_WWNN: if (rport->node_name == ids->node_name) match = 1; break; case FC_TGTID_BIND_BY_ID: if (rport->port_id == ids->port_id) match = 1; break; } if (match) { |
19a7b4aeb [SCSI] update fc_... |
2718 2719 2720 2721 2722 2723 2724 2725 2726 2727 2728 2729 2730 2731 2732 2733 2734 |
memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); rport->port_id = ids->port_id; rport->port_state = FC_PORTSTATE_ONLINE; rport->roles = ids->roles; spin_unlock_irqrestore(shost->host_lock, flags); if (fci->f->dd_fcrport_size) memset(rport->dd_data, 0, fci->f->dd_fcrport_size); /* |
92740b24c [SCSI] fc_transpo... |
2735 2736 2737 2738 2739 2740 2741 2742 2743 2744 2745 2746 2747 |
* If we were not a target, cancel the * io terminate and rport timers, and * we're done. * * If we were a target, but our new role * doesn't indicate a target, leave the * timers running expecting the role to * change as the target fully logs in. If * it doesn't, the target will be torn down. * * If we were a target, and our role shows * we're still a target, cancel the timers * and kick off a scan. |
19a7b4aeb [SCSI] update fc_... |
2748 |
*/ |
19a7b4aeb [SCSI] update fc_... |
2749 |
|
92740b24c [SCSI] fc_transpo... |
2750 2751 |
/* was a target, not in roles */ if ((rport->scsi_target_id != -1) && |
a53eb5e06 [SCSI] FC Transpo... |
2752 |
(!(ids->roles & FC_PORT_ROLE_FCP_TARGET))) |
92740b24c [SCSI] fc_transpo... |
2753 |
return rport; |
19a7b4aeb [SCSI] update fc_... |
2754 2755 |
/* |
92740b24c [SCSI] fc_transpo... |
2756 2757 2758 |
* Stop the fail io and dev_loss timers. * If they flush, the port_state will * be checked and will NOOP the function. |
19a7b4aeb [SCSI] update fc_... |
2759 |
*/ |
0f29b966d [SCSI] FC transpo... |
2760 2761 |
if (!cancel_delayed_work(&rport->fail_io_work)) fc_flush_devloss(shost); |
92740b24c [SCSI] fc_transpo... |
2762 |
if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf34977 [SCSI] FC transpo... |
2763 2764 2765 |
fc_flush_devloss(shost); spin_lock_irqsave(shost->host_lock, flags); |
fff9d40ce [SCSI] fc class: ... |
2766 |
rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | |
4be98c0ca [SCSI] fc transpo... |
2767 2768 |
FC_RPORT_DEVLOSS_PENDING | FC_RPORT_DEVLOSS_CALLBK_DONE); |
19a7b4aeb [SCSI] update fc_... |
2769 |
|
92740b24c [SCSI] fc_transpo... |
2770 2771 2772 2773 2774 2775 2776 2777 2778 2779 2780 |
/* if target, initiate a scan */ if (rport->scsi_target_id != -1) { rport->flags |= FC_RPORT_SCAN_PENDING; scsi_queue_work(shost, &rport->scan_work); spin_unlock_irqrestore(shost->host_lock, flags); scsi_target_unblock(&rport->dev); } else spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edff [SCSI] fc transpo... |
2781 |
|
9e4f5e296 [SCSI] FC Pass Th... |
2782 |
fc_bsg_goose_queue(rport); |
19a7b4aeb [SCSI] update fc_... |
2783 2784 2785 2786 |
return rport; } } } |
92740b24c [SCSI] fc_transpo... |
2787 2788 2789 2790 |
/* * Search the bindings array * Note: if never a FCP target, you won't be on this list */ |
aedf34977 [SCSI] FC transpo... |
2791 |
if (fc_host->tgtid_bind_type != FC_TGTID_BIND_NONE) { |
1da177e4c Linux-2.6.12-rc2 |
2792 2793 |
/* search for a matching consistent binding */ |
aedf34977 [SCSI] FC transpo... |
2794 |
list_for_each_entry(rport, &fc_host->rport_bindings, |
1da177e4c Linux-2.6.12-rc2 |
2795 2796 2797 |
peers) { if (rport->channel != channel) continue; |
aedf34977 [SCSI] FC transpo... |
2798 |
switch (fc_host->tgtid_bind_type) { |
1da177e4c Linux-2.6.12-rc2 |
2799 2800 2801 2802 2803 2804 2805 2806 2807 2808 2809 2810 2811 2812 2813 2814 2815 |
case FC_TGTID_BIND_BY_WWPN: if (rport->port_name == ids->port_name) match = 1; break; case FC_TGTID_BIND_BY_WWNN: if (rport->node_name == ids->node_name) match = 1; break; case FC_TGTID_BIND_BY_ID: if (rport->port_id == ids->port_id) match = 1; break; case FC_TGTID_BIND_NONE: /* to keep compiler happy */ break; } if (match) { |
aedf34977 [SCSI] FC transpo... |
2816 |
list_move_tail(&rport->peers, &fc_host->rports); |
1da177e4c Linux-2.6.12-rc2 |
2817 2818 2819 |
break; } } |
1da177e4c Linux-2.6.12-rc2 |
2820 2821 2822 2823 2824 2825 2826 2827 |
if (match) { memcpy(&rport->node_name, &ids->node_name, sizeof(rport->node_name)); memcpy(&rport->port_name, &ids->port_name, sizeof(rport->port_name)); rport->port_id = ids->port_id; rport->roles = ids->roles; rport->port_state = FC_PORTSTATE_ONLINE; |
fff9d40ce [SCSI] fc class: ... |
2828 |
rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4c Linux-2.6.12-rc2 |
2829 |
|
19a7b4aeb [SCSI] update fc_... |
2830 2831 2832 |
if (fci->f->dd_fcrport_size) memset(rport->dd_data, 0, fci->f->dd_fcrport_size); |
a53eb5e06 [SCSI] FC Transpo... |
2833 |
if (rport->roles & FC_PORT_ROLE_FCP_TARGET) { |
1da177e4c Linux-2.6.12-rc2 |
2834 |
/* initiate a scan of the target */ |
aedf34977 [SCSI] FC transpo... |
2835 |
rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4c Linux-2.6.12-rc2 |
2836 |
scsi_queue_work(shost, &rport->scan_work); |
a0785edff [SCSI] fc transpo... |
2837 2838 2839 2840 |
spin_unlock_irqrestore(shost->host_lock, flags); scsi_target_unblock(&rport->dev); } else spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
2841 2842 2843 2844 |
return rport; } } |
19a7b4aeb [SCSI] update fc_... |
2845 |
spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
2846 2847 2848 2849 2850 2851 |
/* No consistent binding found - create new remote port entry */ rport = fc_rport_create(shost, channel, ids); return rport; } EXPORT_SYMBOL(fc_remote_port_add); |
1da177e4c Linux-2.6.12-rc2 |
2852 2853 |
/** |
eb44820c2 [SCSI] Add Docume... |
2854 |
* fc_remote_port_delete - notifies the fc transport that a remote port is no longer in existence. |
1da177e4c Linux-2.6.12-rc2 |
2855 2856 2857 2858 2859 |
* @rport: The remote port that no longer exists * * The LLDD calls this routine to notify the transport that a remote * port is no longer part of the topology. Note: Although a port * may no longer be part of the topology, it may persist in the remote |
19a7b4aeb [SCSI] update fc_... |
2860 |
* ports displayed by the fc_host. We do this under 2 conditions: |
eb44820c2 [SCSI] Add Docume... |
2861 |
* 1) If the port was a scsi target, we delay its deletion by "blocking" it. |
19a7b4aeb [SCSI] update fc_... |
2862 2863 2864 |
* This allows the port to temporarily disappear, then reappear without * disrupting the SCSI device tree attached to it. During the "blocked" * period the port will still exist. |
eb44820c2 [SCSI] Add Docume... |
2865 |
* 2) If the port was a scsi target and disappears for longer than we |
19a7b4aeb [SCSI] update fc_... |
2866 2867 2868 2869 2870 |
* expect, we'll delete the port and the tear down the SCSI device tree * attached to it. However, we want to semi-persist the target id assigned * to that port if it eventually does exist. The port structure will * remain (although with minimal information) so that the target id * bindings remails. |
1da177e4c Linux-2.6.12-rc2 |
2871 2872 2873 2874 |
* * If the remote port is not an FCP Target, it will be fully torn down * and deallocated, including the fc_remote_port class device. * |
19a7b4aeb [SCSI] update fc_... |
2875 2876 2877 2878 |
* If the remote port is an FCP Target, the port will be placed in a * temporary blocked state. From the LLDD's perspective, the rport no * longer exists. From the SCSI midlayer's perspective, the SCSI target * exists, but all sdevs on it are blocked from further I/O. The following |
eb44820c2 [SCSI] Add Docume... |
2879 2880 |
* is then expected. * |
19a7b4aeb [SCSI] update fc_... |
2881 2882 2883 2884 2885 2886 2887 2888 2889 |
* If the remote port does not return (signaled by a LLDD call to * fc_remote_port_add()) within the dev_loss_tmo timeout, then the * scsi target is removed - killing all outstanding i/o and removing the * scsi devices attached ot it. The port structure will be marked Not * Present and be partially cleared, leaving only enough information to * recognize the remote port relative to the scsi target id binding if * it later appears. The port will remain as long as there is a valid * binding (e.g. until the user changes the binding type or unloads the * scsi host with the binding). |
1da177e4c Linux-2.6.12-rc2 |
2890 |
* |
19a7b4aeb [SCSI] update fc_... |
2891 2892 2893 2894 2895 2896 2897 2898 |
* If the remote port returns within the dev_loss_tmo value (and matches * according to the target id binding type), the port structure will be * reused. If it is no longer a SCSI target, the target will be torn * down. If it continues to be a SCSI target, then the target will be * unblocked (allowing i/o to be resumed), and a scan will be activated * to ensure that all luns are detected. * * Called from normal process context only - cannot be called from interrupt. |
1da177e4c Linux-2.6.12-rc2 |
2899 2900 2901 |
* * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
2902 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
2903 2904 2905 |
void fc_remote_port_delete(struct fc_rport *rport) { |
aedf34977 [SCSI] FC transpo... |
2906 |
struct Scsi_Host *shost = rport_to_shost(rport); |
36dd288f0 [SCSI] scsi_trans... |
2907 |
unsigned long timeout = rport->dev_loss_tmo; |
aedf34977 [SCSI] FC transpo... |
2908 2909 2910 2911 2912 2913 2914 2915 2916 2917 2918 |
unsigned long flags; /* * No need to flush the fc_host work_q's, as all adds are synchronous. * * We do need to reclaim the rport scan work element, so eventually * (in fc_rport_final_delete()) we'll flush the scsi host work_q if * there's still a scan pending. */ spin_lock_irqsave(shost->host_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
2919 |
|
92740b24c [SCSI] fc_transpo... |
2920 |
if (rport->port_state != FC_PORTSTATE_ONLINE) { |
aedf34977 [SCSI] FC transpo... |
2921 |
spin_unlock_irqrestore(shost->host_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
2922 2923 |
return; } |
92740b24c [SCSI] fc_transpo... |
2924 2925 2926 2927 2928 2929 2930 2931 2932 2933 2934 2935 |
/* * In the past, we if this was not an FCP-Target, we would * unconditionally just jump to deleting the rport. * However, rports can be used as node containers by the LLDD, * and its not appropriate to just terminate the rport at the * first sign of a loss in connectivity. The LLDD may want to * send ELS traffic to re-validate the login. If the rport is * immediately deleted, it makes it inappropriate for a node * container. * So... we now unconditionally wait dev_loss_tmo before * destroying an rport. */ |
aedf34977 [SCSI] FC transpo... |
2936 2937 2938 2939 2940 |
rport->port_state = FC_PORTSTATE_BLOCKED; rport->flags |= FC_RPORT_DEVLOSS_PENDING; spin_unlock_irqrestore(shost->host_lock, flags); |
7525236d0 [SCSI] fc_transpo... |
2941 2942 2943 |
if (rport->roles & FC_PORT_ROLE_FCP_INITIATOR && shost->active_mode & MODE_TARGET) fc_tgt_it_nexus_destroy(shost, (unsigned long)rport); |
19a7b4aeb [SCSI] update fc_... |
2944 |
scsi_target_block(&rport->dev); |
1da177e4c Linux-2.6.12-rc2 |
2945 |
|
0f29b966d [SCSI] FC transpo... |
2946 2947 |
/* see if we need to kill io faster than waiting for device loss */ if ((rport->fast_io_fail_tmo != -1) && |
fff9d40ce [SCSI] fc class: ... |
2948 |
(rport->fast_io_fail_tmo < timeout)) |
0f29b966d [SCSI] FC transpo... |
2949 2950 |
fc_queue_devloss_work(shost, &rport->fail_io_work, rport->fast_io_fail_tmo * HZ); |
19a7b4aeb [SCSI] update fc_... |
2951 |
/* cap the length the devices can be blocked until they are deleted */ |
aedf34977 [SCSI] FC transpo... |
2952 |
fc_queue_devloss_work(shost, &rport->dev_loss_work, timeout * HZ); |
1da177e4c Linux-2.6.12-rc2 |
2953 2954 2955 2956 |
} EXPORT_SYMBOL(fc_remote_port_delete); /** |
eb44820c2 [SCSI] Add Docume... |
2957 |
* fc_remote_port_rolechg - notifies the fc transport that the roles on a remote may have changed. |
1da177e4c Linux-2.6.12-rc2 |
2958 |
* @rport: The remote port that changed. |
eb44820c2 [SCSI] Add Docume... |
2959 |
* @roles: New roles for this port. |
1da177e4c Linux-2.6.12-rc2 |
2960 |
* |
eb44820c2 [SCSI] Add Docume... |
2961 2962 |
* Description: The LLDD calls this routine to notify the transport that the * roles on a remote port may have changed. The largest effect of this is |
1da177e4c Linux-2.6.12-rc2 |
2963 2964 2965 2966 2967 2968 2969 2970 2971 2972 2973 2974 |
* if a port now becomes a FCP Target, it must be allocated a * scsi target id. If the port is no longer a FCP target, any * scsi target id value assigned to it will persist in case the * role changes back to include FCP Target. No changes in the scsi * midlayer will be invoked if the role changes (in the expectation * that the role will be resumed. If it doesn't normal error processing * will take place). * * Should not be called from interrupt context. * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
2975 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
2976 2977 2978 2979 |
void fc_remote_port_rolechg(struct fc_rport *rport, u32 roles) { struct Scsi_Host *shost = rport_to_shost(rport); |
aedf34977 [SCSI] FC transpo... |
2980 |
struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
1da177e4c Linux-2.6.12-rc2 |
2981 2982 |
unsigned long flags; int create = 0; |
7525236d0 [SCSI] fc_transpo... |
2983 |
int ret; |
1da177e4c Linux-2.6.12-rc2 |
2984 |
|
1da177e4c Linux-2.6.12-rc2 |
2985 |
spin_lock_irqsave(shost->host_lock, flags); |
a53eb5e06 [SCSI] FC Transpo... |
2986 |
if (roles & FC_PORT_ROLE_FCP_TARGET) { |
19a7b4aeb [SCSI] update fc_... |
2987 2988 2989 |
if (rport->scsi_target_id == -1) { rport->scsi_target_id = fc_host->next_target_id++; create = 1; |
a53eb5e06 [SCSI] FC Transpo... |
2990 |
} else if (!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) |
19a7b4aeb [SCSI] update fc_... |
2991 |
create = 1; |
7525236d0 [SCSI] fc_transpo... |
2992 2993 2994 2995 2996 2997 2998 |
} else if (shost->active_mode & MODE_TARGET) { ret = fc_tgt_it_nexus_create(shost, (unsigned long)rport, (char *)&rport->node_name); if (ret) printk(KERN_ERR "FC Remore Port tgt nexus failed %d ", ret); |
1da177e4c Linux-2.6.12-rc2 |
2999 |
} |
1da177e4c Linux-2.6.12-rc2 |
3000 |
|
19a7b4aeb [SCSI] update fc_... |
3001 |
rport->roles = roles; |
aedf34977 [SCSI] FC transpo... |
3002 |
spin_unlock_irqrestore(shost->host_lock, flags); |
19a7b4aeb [SCSI] update fc_... |
3003 3004 3005 3006 3007 3008 3009 3010 3011 3012 3013 3014 3015 |
if (create) { /* * There may have been a delete timer running on the * port. Ensure that it is cancelled as we now know * the port is an FCP Target. * Note: we know the rport is exists and in an online * state as the LLDD would not have had an rport * reference to pass us. * * Take no action on the del_timer failure as the state * machine state change will validate the * transaction. */ |
0f29b966d [SCSI] FC transpo... |
3016 3017 |
if (!cancel_delayed_work(&rport->fail_io_work)) fc_flush_devloss(shost); |
19a7b4aeb [SCSI] update fc_... |
3018 |
if (!cancel_delayed_work(&rport->dev_loss_work)) |
aedf34977 [SCSI] FC transpo... |
3019 3020 3021 |
fc_flush_devloss(shost); spin_lock_irqsave(shost->host_lock, flags); |
fff9d40ce [SCSI] fc class: ... |
3022 3023 |
rport->flags &= ~(FC_RPORT_FAST_FAIL_TIMEDOUT | FC_RPORT_DEVLOSS_PENDING); |
aedf34977 [SCSI] FC transpo... |
3024 3025 3026 3027 |
spin_unlock_irqrestore(shost->host_lock, flags); /* ensure any stgt delete functions are done */ fc_flush_work(shost); |
19a7b4aeb [SCSI] update fc_... |
3028 |
|
1da177e4c Linux-2.6.12-rc2 |
3029 |
/* initiate a scan of the target */ |
aedf34977 [SCSI] FC transpo... |
3030 3031 |
spin_lock_irqsave(shost->host_lock, flags); rport->flags |= FC_RPORT_SCAN_PENDING; |
1da177e4c Linux-2.6.12-rc2 |
3032 |
scsi_queue_work(shost, &rport->scan_work); |
aedf34977 [SCSI] FC transpo... |
3033 |
spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edff [SCSI] fc transpo... |
3034 |
scsi_target_unblock(&rport->dev); |
19a7b4aeb [SCSI] update fc_... |
3035 |
} |
1da177e4c Linux-2.6.12-rc2 |
3036 3037 3038 3039 |
} EXPORT_SYMBOL(fc_remote_port_rolechg); /** |
eb44820c2 [SCSI] Add Docume... |
3040 |
* fc_timeout_deleted_rport - Timeout handler for a deleted remote port. |
92740b24c [SCSI] fc_transpo... |
3041 |
* @work: rport target that failed to reappear in the allotted time. |
eb44820c2 [SCSI] Add Docume... |
3042 3043 3044 3045 |
* * Description: An attempt to delete a remote port blocks, and if it fails * to return in the allotted time this gets called. */ |
1da177e4c Linux-2.6.12-rc2 |
3046 |
static void |
c4028958b WorkStruct: make ... |
3047 |
fc_timeout_deleted_rport(struct work_struct *work) |
1da177e4c Linux-2.6.12-rc2 |
3048 |
{ |
c4028958b WorkStruct: make ... |
3049 3050 |
struct fc_rport *rport = container_of(work, struct fc_rport, dev_loss_work.work); |
19a7b4aeb [SCSI] update fc_... |
3051 |
struct Scsi_Host *shost = rport_to_shost(rport); |
4be98c0ca [SCSI] fc transpo... |
3052 |
struct fc_internal *i = to_fc_internal(shost->transportt); |
aedf34977 [SCSI] FC transpo... |
3053 |
struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
19a7b4aeb [SCSI] update fc_... |
3054 |
unsigned long flags; |
8798a694d [SCSI] scsi_trans... |
3055 |
int do_callback = 0; |
1da177e4c Linux-2.6.12-rc2 |
3056 |
|
19a7b4aeb [SCSI] update fc_... |
3057 |
spin_lock_irqsave(shost->host_lock, flags); |
1da177e4c Linux-2.6.12-rc2 |
3058 |
|
aedf34977 [SCSI] FC transpo... |
3059 |
rport->flags &= ~FC_RPORT_DEVLOSS_PENDING; |
1da177e4c Linux-2.6.12-rc2 |
3060 |
/* |
92740b24c [SCSI] fc_transpo... |
3061 3062 3063 |
* If the port is ONLINE, then it came back. If it was a SCSI * target, validate it still is. If not, tear down the * scsi_target on it. |
1da177e4c Linux-2.6.12-rc2 |
3064 |
*/ |
aedf34977 [SCSI] FC transpo... |
3065 |
if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
92740b24c [SCSI] fc_transpo... |
3066 |
(rport->scsi_target_id != -1) && |
a53eb5e06 [SCSI] FC Transpo... |
3067 |
!(rport->roles & FC_PORT_ROLE_FCP_TARGET)) { |
19a7b4aeb [SCSI] update fc_... |
3068 |
dev_printk(KERN_ERR, &rport->dev, |
aedf34977 [SCSI] FC transpo... |
3069 3070 3071 |
"blocked FC remote port time out: no longer" " a FCP target, removing starget "); |
aedf34977 [SCSI] FC transpo... |
3072 |
spin_unlock_irqrestore(shost->host_lock, flags); |
a0785edff [SCSI] fc transpo... |
3073 3074 |
scsi_target_unblock(&rport->dev); fc_queue_work(shost, &rport->stgt_delete_work); |
19a7b4aeb [SCSI] update fc_... |
3075 3076 |
return; } |
1da177e4c Linux-2.6.12-rc2 |
3077 |
|
92740b24c [SCSI] fc_transpo... |
3078 |
/* NOOP state - we're flushing workq's */ |
19a7b4aeb [SCSI] update fc_... |
3079 3080 3081 |
if (rport->port_state != FC_PORTSTATE_BLOCKED) { spin_unlock_irqrestore(shost->host_lock, flags); dev_printk(KERN_ERR, &rport->dev, |
92740b24c [SCSI] fc_transpo... |
3082 3083 3084 3085 |
"blocked FC remote port time out: leaving" " rport%s alone ", (rport->scsi_target_id != -1) ? " and starget" : ""); |
19a7b4aeb [SCSI] update fc_... |
3086 3087 |
return; } |
1da177e4c Linux-2.6.12-rc2 |
3088 |
|
92740b24c [SCSI] fc_transpo... |
3089 3090 |
if ((fc_host->tgtid_bind_type == FC_TGTID_BIND_NONE) || (rport->scsi_target_id == -1)) { |
aedf34977 [SCSI] FC transpo... |
3091 3092 |
list_del(&rport->peers); rport->port_state = FC_PORTSTATE_DELETED; |
19a7b4aeb [SCSI] update fc_... |
3093 |
dev_printk(KERN_ERR, &rport->dev, |
92740b24c [SCSI] fc_transpo... |
3094 3095 3096 3097 |
"blocked FC remote port time out: removing" " rport%s ", (rport->scsi_target_id != -1) ? " and starget" : ""); |
aedf34977 [SCSI] FC transpo... |
3098 3099 |
fc_queue_work(shost, &rport->rport_delete_work); spin_unlock_irqrestore(shost->host_lock, flags); |
19a7b4aeb [SCSI] update fc_... |
3100 3101 |
return; } |
1da177e4c Linux-2.6.12-rc2 |
3102 |
|
19a7b4aeb [SCSI] update fc_... |
3103 3104 3105 3106 |
dev_printk(KERN_ERR, &rport->dev, "blocked FC remote port time out: removing target and " "saving binding "); |
aedf34977 [SCSI] FC transpo... |
3107 |
list_move_tail(&rport->peers, &fc_host->rport_bindings); |
1da177e4c Linux-2.6.12-rc2 |
3108 3109 |
/* |
19a7b4aeb [SCSI] update fc_... |
3110 3111 3112 |
* Note: We do not remove or clear the hostdata area. This allows * host-specific target data to persist along with the * scsi_target_id. It's up to the host to manage it's hostdata area. |
1da177e4c Linux-2.6.12-rc2 |
3113 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
3114 |
|
19a7b4aeb [SCSI] update fc_... |
3115 3116 3117 3118 3119 |
/* * Reinitialize port attributes that may change if the port comes back. */ rport->maxframe_size = -1; rport->supported_classes = FC_COS_UNSPECIFIED; |
a53eb5e06 [SCSI] FC Transpo... |
3120 |
rport->roles = FC_PORT_ROLE_UNKNOWN; |
aedf34977 [SCSI] FC transpo... |
3121 |
rport->port_state = FC_PORTSTATE_NOTPRESENT; |
fff9d40ce [SCSI] fc class: ... |
3122 |
rport->flags &= ~FC_RPORT_FAST_FAIL_TIMEDOUT; |
1da177e4c Linux-2.6.12-rc2 |
3123 |
|
f78badb1a [SCSI] fc transpo... |
3124 3125 3126 3127 3128 3129 3130 |
/* * Pre-emptively kill I/O rather than waiting for the work queue * item to teardown the starget. (FCOE libFC folks prefer this * and to have the rport_port_id still set when it's done). */ spin_unlock_irqrestore(shost->host_lock, flags); fc_terminate_rport_io(rport); |
8798a694d [SCSI] scsi_trans... |
3131 3132 3133 |
spin_lock_irqsave(shost->host_lock, flags); if (rport->port_state == FC_PORTSTATE_NOTPRESENT) { /* still missing */ |
f78badb1a [SCSI] fc transpo... |
3134 |
|
8798a694d [SCSI] scsi_trans... |
3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150 3151 3152 3153 3154 3155 3156 3157 3158 3159 3160 3161 |
/* remove the identifiers that aren't used in the consisting binding */ switch (fc_host->tgtid_bind_type) { case FC_TGTID_BIND_BY_WWPN: rport->node_name = -1; rport->port_id = -1; break; case FC_TGTID_BIND_BY_WWNN: rport->port_name = -1; rport->port_id = -1; break; case FC_TGTID_BIND_BY_ID: rport->node_name = -1; rport->port_name = -1; break; case FC_TGTID_BIND_NONE: /* to keep compiler happy */ break; } /* * As this only occurs if the remote port (scsi target) * went away and didn't come back - we'll remove * all attached scsi devices. */ rport->flags |= FC_RPORT_DEVLOSS_CALLBK_DONE; fc_queue_work(shost, &rport->stgt_delete_work); do_callback = 1; |
19a7b4aeb [SCSI] update fc_... |
3162 |
} |
8798a694d [SCSI] scsi_trans... |
3163 |
spin_unlock_irqrestore(shost->host_lock, flags); |
4be98c0ca [SCSI] fc transpo... |
3164 3165 3166 3167 3168 3169 3170 |
/* * Notify the driver that the rport is now dead. The LLDD will * also guarantee that any communication to the rport is terminated * * Note: we set the CALLBK_DONE flag above to correspond */ |
8798a694d [SCSI] scsi_trans... |
3171 |
if (do_callback && i->f->dev_loss_tmo_callbk) |
4be98c0ca [SCSI] fc transpo... |
3172 |
i->f->dev_loss_tmo_callbk(rport); |
1da177e4c Linux-2.6.12-rc2 |
3173 |
} |
1da177e4c Linux-2.6.12-rc2 |
3174 |
|
4be98c0ca [SCSI] fc transpo... |
3175 |
|
1da177e4c Linux-2.6.12-rc2 |
3176 |
/** |
eb44820c2 [SCSI] Add Docume... |
3177 |
* fc_timeout_fail_rport_io - Timeout handler for a fast io failing on a disconnected SCSI target. |
c4028958b WorkStruct: make ... |
3178 |
* @work: rport to terminate io on. |
0f29b966d [SCSI] FC transpo... |
3179 3180 3181 |
* * Notes: Only requests the failure of the io, not that all are flushed * prior to returning. |
eb44820c2 [SCSI] Add Docume... |
3182 |
*/ |
0f29b966d [SCSI] FC transpo... |
3183 |
static void |
c4028958b WorkStruct: make ... |
3184 |
fc_timeout_fail_rport_io(struct work_struct *work) |
0f29b966d [SCSI] FC transpo... |
3185 |
{ |
c4028958b WorkStruct: make ... |
3186 3187 |
struct fc_rport *rport = container_of(work, struct fc_rport, fail_io_work.work); |
0f29b966d [SCSI] FC transpo... |
3188 3189 3190 |
if (rport->port_state != FC_PORTSTATE_BLOCKED) return; |
fff9d40ce [SCSI] fc class: ... |
3191 3192 |
rport->flags |= FC_RPORT_FAST_FAIL_TIMEDOUT; fc_terminate_rport_io(rport); |
0f29b966d [SCSI] FC transpo... |
3193 3194 3195 |
} /** |
1da177e4c Linux-2.6.12-rc2 |
3196 |
* fc_scsi_scan_rport - called to perform a scsi scan on a remote port. |
c4028958b WorkStruct: make ... |
3197 |
* @work: remote port to be scanned. |
eb44820c2 [SCSI] Add Docume... |
3198 |
*/ |
1da177e4c Linux-2.6.12-rc2 |
3199 |
static void |
c4028958b WorkStruct: make ... |
3200 |
fc_scsi_scan_rport(struct work_struct *work) |
1da177e4c Linux-2.6.12-rc2 |
3201 |
{ |
c4028958b WorkStruct: make ... |
3202 3203 |
struct fc_rport *rport = container_of(work, struct fc_rport, scan_work); |
aedf34977 [SCSI] FC transpo... |
3204 |
struct Scsi_Host *shost = rport_to_shost(rport); |
03f002f77 [SCSI] scsi_trans... |
3205 |
struct fc_internal *i = to_fc_internal(shost->transportt); |
42e33148d [SCSI] fix for fc... |
3206 |
unsigned long flags; |
aedf34977 [SCSI] FC transpo... |
3207 |
if ((rport->port_state == FC_PORTSTATE_ONLINE) && |
03f002f77 [SCSI] scsi_trans... |
3208 3209 |
(rport->roles & FC_PORT_ROLE_FCP_TARGET) && !(i->f->disable_target_scan)) { |
aedf34977 [SCSI] FC transpo... |
3210 3211 |
scsi_scan_target(&rport->dev, rport->channel, rport->scsi_target_id, SCAN_WILD_CARD, 1); |
42e33148d [SCSI] fix for fc... |
3212 |
} |
aedf34977 [SCSI] FC transpo... |
3213 3214 3215 |
spin_lock_irqsave(shost->host_lock, flags); rport->flags &= ~FC_RPORT_SCAN_PENDING; |
42e33148d [SCSI] fix for fc... |
3216 3217 |
spin_unlock_irqrestore(shost->host_lock, flags); } |
65d430fa9 [SCSI] scsi_trans... |
3218 3219 3220 3221 3222 3223 |
/** * fc_block_scsi_eh - Block SCSI eh thread for blocked fc_rport * @cmnd: SCSI command that scsi_eh is trying to recover * * This routine can be called from a FC LLD scsi_eh callback. It * blocks the scsi_eh thread until the fc_rport leaves the |
2f2eb5876 [SCSI] Allow FC ... |
3224 3225 3226 3227 3228 3229 3230 |
* FC_PORTSTATE_BLOCKED, or the fast_io_fail_tmo fires. This is * necessary to avoid the scsi_eh failing recovery actions for blocked * rports which would lead to offlined SCSI devices. * * Returns: 0 if the fc_rport left the state FC_PORTSTATE_BLOCKED. * FAST_IO_FAIL if the fast_io_fail_tmo fired, this should be * passed back to scsi_eh. |
65d430fa9 [SCSI] scsi_trans... |
3231 |
*/ |
2f2eb5876 [SCSI] Allow FC ... |
3232 |
int fc_block_scsi_eh(struct scsi_cmnd *cmnd) |
65d430fa9 [SCSI] scsi_trans... |
3233 3234 3235 3236 3237 3238 |
{ struct Scsi_Host *shost = cmnd->device->host; struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); unsigned long flags; spin_lock_irqsave(shost->host_lock, flags); |
2f2eb5876 [SCSI] Allow FC ... |
3239 3240 |
while (rport->port_state == FC_PORTSTATE_BLOCKED && !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) { |
65d430fa9 [SCSI] scsi_trans... |
3241 3242 3243 3244 3245 |
spin_unlock_irqrestore(shost->host_lock, flags); msleep(1000); spin_lock_irqsave(shost->host_lock, flags); } spin_unlock_irqrestore(shost->host_lock, flags); |
2f2eb5876 [SCSI] Allow FC ... |
3246 3247 3248 3249 3250 |
if (rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT) return FAST_IO_FAIL; return 0; |
65d430fa9 [SCSI] scsi_trans... |
3251 3252 |
} EXPORT_SYMBOL(fc_block_scsi_eh); |
42e33148d [SCSI] fix for fc... |
3253 |
|
a53eb5e06 [SCSI] FC Transpo... |
3254 |
/** |
a30c3f69e [SCSI] fc_transpo... |
3255 |
* fc_vport_setup - allocates and creates a FC virtual port. |
a53eb5e06 [SCSI] FC Transpo... |
3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 |
* @shost: scsi host the virtual port is connected to. * @channel: Channel on shost port connected to. * @pdev: parent device for vport * @ids: The world wide names, FC4 port roles, etc for * the virtual port. * @ret_vport: The pointer to the created vport. * * Allocates and creates the vport structure, calls the parent host * to instantiate the vport, the completes w/ class and sysfs creation. * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
3268 |
*/ |
a53eb5e06 [SCSI] FC Transpo... |
3269 |
static int |
a30c3f69e [SCSI] fc_transpo... |
3270 |
fc_vport_setup(struct Scsi_Host *shost, int channel, struct device *pdev, |
a53eb5e06 [SCSI] FC Transpo... |
3271 3272 3273 3274 3275 3276 3277 3278 3279 3280 3281 3282 3283 3284 3285 3286 3287 3288 |
struct fc_vport_identifiers *ids, struct fc_vport **ret_vport) { struct fc_host_attrs *fc_host = shost_to_fc_host(shost); struct fc_internal *fci = to_fc_internal(shost->transportt); struct fc_vport *vport; struct device *dev; unsigned long flags; size_t size; int error; *ret_vport = NULL; if ( ! fci->f->vport_create) return -ENOENT; size = (sizeof(struct fc_vport) + fci->f->dd_fcvport_size); vport = kzalloc(size, GFP_KERNEL); if (unlikely(!vport)) { |
cadbd4a5e [SCSI] replace __... |
3289 3290 |
printk(KERN_ERR "%s: allocation failure ", __func__); |
a53eb5e06 [SCSI] FC Transpo... |
3291 3292 3293 3294 3295 3296 3297 3298 3299 3300 3301 3302 3303 3304 |
return -ENOMEM; } vport->vport_state = FC_VPORT_UNKNOWN; vport->vport_last_state = FC_VPORT_UNKNOWN; vport->node_name = ids->node_name; vport->port_name = ids->port_name; vport->roles = ids->roles; vport->vport_type = ids->vport_type; if (fci->f->dd_fcvport_size) vport->dd_data = &vport[1]; vport->shost = shost; vport->channel = channel; vport->flags = FC_VPORT_CREATING; |
9ef3e4a45 [SCSI] fc_transpo... |
3305 |
INIT_WORK(&vport->vport_delete_work, fc_vport_sched_delete); |
a53eb5e06 [SCSI] FC Transpo... |
3306 3307 3308 3309 3310 3311 3312 3313 3314 3315 3316 3317 3318 3319 3320 3321 3322 3323 3324 |
spin_lock_irqsave(shost->host_lock, flags); if (fc_host->npiv_vports_inuse >= fc_host->max_npiv_vports) { spin_unlock_irqrestore(shost->host_lock, flags); kfree(vport); return -ENOSPC; } fc_host->npiv_vports_inuse++; vport->number = fc_host->next_vport_number++; list_add_tail(&vport->peers, &fc_host->vports); get_device(&shost->shost_gendev); /* for fc_host->vport list */ spin_unlock_irqrestore(shost->host_lock, flags); dev = &vport->dev; device_initialize(dev); /* takes self reference */ dev->parent = get_device(pdev); /* takes parent reference */ dev->release = fc_vport_dev_release; |
71610f55f [SCSI] struct dev... |
3325 3326 |
dev_set_name(dev, "vport-%d:%d-%d", shost->host_no, channel, vport->number); |
a53eb5e06 [SCSI] FC Transpo... |
3327 3328 3329 3330 3331 3332 3333 3334 3335 3336 3337 3338 3339 3340 3341 3342 3343 3344 3345 3346 3347 3348 3349 3350 |
transport_setup_device(dev); error = device_add(dev); if (error) { printk(KERN_ERR "FC Virtual Port device_add failed "); goto delete_vport; } transport_add_device(dev); transport_configure_device(dev); error = fci->f->vport_create(vport, ids->disable); if (error) { printk(KERN_ERR "FC Virtual Port LLDD Create failed "); goto delete_vport_all; } /* * if the parent isn't the physical adapter's Scsi_Host, ensure * the Scsi_Host at least contains ia symlink to the vport. */ if (pdev != &shost->shost_gendev) { error = sysfs_create_link(&shost->shost_gendev.kobj, |
71610f55f [SCSI] struct dev... |
3351 |
&dev->kobj, dev_name(dev)); |
a53eb5e06 [SCSI] FC Transpo... |
3352 3353 3354 3355 3356 |
if (error) printk(KERN_ERR "%s: Cannot create vport symlinks for " "%s, err=%d ", |
71610f55f [SCSI] struct dev... |
3357 |
__func__, dev_name(dev), error); |
a53eb5e06 [SCSI] FC Transpo... |
3358 3359 3360 3361 3362 3363 |
} spin_lock_irqsave(shost->host_lock, flags); vport->flags &= ~FC_VPORT_CREATING; spin_unlock_irqrestore(shost->host_lock, flags); dev_printk(KERN_NOTICE, pdev, |
71610f55f [SCSI] struct dev... |
3364 3365 |
"%s created via shost%d channel %d ", dev_name(dev), |
a53eb5e06 [SCSI] FC Transpo... |
3366 3367 3368 3369 3370 3371 3372 3373 3374 3375 3376 3377 3378 3379 3380 3381 3382 3383 3384 3385 3386 |
shost->host_no, channel); *ret_vport = vport; return 0; delete_vport_all: transport_remove_device(dev); device_del(dev); delete_vport: transport_destroy_device(dev); spin_lock_irqsave(shost->host_lock, flags); list_del(&vport->peers); put_device(&shost->shost_gendev); /* for fc_host->vport list */ fc_host->npiv_vports_inuse--; spin_unlock_irqrestore(shost->host_lock, flags); put_device(dev->parent); kfree(vport); return error; } |
a30c3f69e [SCSI] fc_transpo... |
3387 3388 3389 3390 3391 3392 3393 3394 3395 3396 3397 3398 3399 3400 3401 3402 3403 3404 3405 3406 3407 3408 |
/** * fc_vport_create - Admin App or LLDD requests creation of a vport * @shost: scsi host the virtual port is connected to. * @channel: channel on shost port connected to. * @ids: The world wide names, FC4 port roles, etc for * the virtual port. * * Notes: * This routine assumes no locks are held on entry. */ struct fc_vport * fc_vport_create(struct Scsi_Host *shost, int channel, struct fc_vport_identifiers *ids) { int stat; struct fc_vport *vport; stat = fc_vport_setup(shost, channel, &shost->shost_gendev, ids, &vport); return stat ? NULL : vport; } EXPORT_SYMBOL(fc_vport_create); |
a53eb5e06 [SCSI] FC Transpo... |
3409 3410 3411 3412 3413 3414 3415 3416 3417 3418 |
/** * fc_vport_terminate - Admin App or LLDD requests termination of a vport * @vport: fc_vport to be terminated * * Calls the LLDD vport_delete() function, then deallocates and removes * the vport from the shost and object tree. * * Notes: * This routine assumes no locks are held on entry. |
eb44820c2 [SCSI] Add Docume... |
3419 |
*/ |
a53eb5e06 [SCSI] FC Transpo... |
3420 3421 3422 3423 3424 3425 3426 3427 3428 |
int fc_vport_terminate(struct fc_vport *vport) { struct Scsi_Host *shost = vport_to_shost(vport); struct fc_host_attrs *fc_host = shost_to_fc_host(shost); struct fc_internal *i = to_fc_internal(shost->transportt); struct device *dev = &vport->dev; unsigned long flags; int stat; |
a53eb5e06 [SCSI] FC Transpo... |
3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445 3446 3447 |
if (i->f->vport_delete) stat = i->f->vport_delete(vport); else stat = -ENOENT; spin_lock_irqsave(shost->host_lock, flags); vport->flags &= ~FC_VPORT_DELETING; if (!stat) { vport->flags |= FC_VPORT_DELETED; list_del(&vport->peers); fc_host->npiv_vports_inuse--; put_device(&shost->shost_gendev); /* for fc_host->vport list */ } spin_unlock_irqrestore(shost->host_lock, flags); if (stat) return stat; if (dev->parent != &shost->shost_gendev) |
71610f55f [SCSI] struct dev... |
3448 |
sysfs_remove_link(&shost->shost_gendev.kobj, dev_name(dev)); |
a53eb5e06 [SCSI] FC Transpo... |
3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462 |
transport_remove_device(dev); device_del(dev); transport_destroy_device(dev); /* * Removing our self-reference should mean our * release function gets called, which will drop the remaining * parent reference and free the data structure. */ put_device(dev); /* for self-reference */ return 0; /* SUCCESS */ } EXPORT_SYMBOL(fc_vport_terminate); |
9ef3e4a45 [SCSI] fc_transpo... |
3463 3464 |
/** * fc_vport_sched_delete - workq-based delete request for a vport |
9ef3e4a45 [SCSI] fc_transpo... |
3465 |
* @work: vport to be deleted. |
eb44820c2 [SCSI] Add Docume... |
3466 |
*/ |
9ef3e4a45 [SCSI] fc_transpo... |
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 |
static void fc_vport_sched_delete(struct work_struct *work) { struct fc_vport *vport = container_of(work, struct fc_vport, vport_delete_work); int stat; stat = fc_vport_terminate(vport); if (stat) dev_printk(KERN_ERR, vport->dev.parent, "%s: %s could not be deleted created via " |
cadbd4a5e [SCSI] replace __... |
3478 3479 |
"shost%d channel %d - error %d ", __func__, |
71610f55f [SCSI] struct dev... |
3480 |
dev_name(&vport->dev), vport->shost->host_no, |
9ef3e4a45 [SCSI] fc_transpo... |
3481 3482 |
vport->channel, stat); } |
a53eb5e06 [SCSI] FC Transpo... |
3483 |
|
9e4f5e296 [SCSI] FC Pass Th... |
3484 3485 3486 3487 3488 3489 3490 3491 3492 3493 3494 3495 3496 3497 3498 3499 3500 3501 3502 3503 3504 3505 3506 3507 3508 3509 3510 |
/* * BSG support */ /** * fc_destroy_bsgjob - routine to teardown/delete a fc bsg job * @job: fc_bsg_job that is to be torn down */ static void fc_destroy_bsgjob(struct fc_bsg_job *job) { unsigned long flags; spin_lock_irqsave(&job->job_lock, flags); if (job->ref_cnt) { spin_unlock_irqrestore(&job->job_lock, flags); return; } spin_unlock_irqrestore(&job->job_lock, flags); put_device(job->dev); /* release reference for the request */ kfree(job->request_payload.sg_list); kfree(job->reply_payload.sg_list); kfree(job); } |
9e4f5e296 [SCSI] FC Pass Th... |
3511 3512 3513 3514 3515 3516 3517 3518 3519 3520 |
/** * fc_bsg_jobdone - completion routine for bsg requests that the LLD has * completed * @job: fc_bsg_job that is complete */ static void fc_bsg_jobdone(struct fc_bsg_job *job) { struct request *req = job->req; struct request *rsp = req->next_rq; |
9e4f5e296 [SCSI] FC Pass Th... |
3521 |
int err; |
9e4f5e296 [SCSI] FC Pass Th... |
3522 |
err = job->req->errors = job->reply->result; |
b5c6f7768 fc_transport: The... |
3523 |
|
9e4f5e296 [SCSI] FC Pass Th... |
3524 3525 3526 3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 |
if (err < 0) /* we're only returning the result field in the reply */ job->req->sense_len = sizeof(uint32_t); else job->req->sense_len = job->reply_len; /* we assume all request payload was transferred, residual == 0 */ req->resid_len = 0; if (rsp) { WARN_ON(job->reply->reply_payload_rcv_len > rsp->resid_len); /* set reply (bidi) residual */ rsp->resid_len -= min(job->reply->reply_payload_rcv_len, rsp->resid_len); } |
b5c6f7768 fc_transport: The... |
3540 3541 3542 3543 3544 |
blk_complete_request(req); } /** * fc_bsg_softirq_done - softirq done routine for destroying the bsg requests |
fe5d20c81 [SCSI] scsi_trans... |
3545 |
* @rq: BSG request that holds the job to be destroyed |
b5c6f7768 fc_transport: The... |
3546 3547 3548 3549 3550 |
*/ static void fc_bsg_softirq_done(struct request *rq) { struct fc_bsg_job *job = rq->special; unsigned long flags; |
9e4f5e296 [SCSI] FC Pass Th... |
3551 |
|
b5c6f7768 fc_transport: The... |
3552 3553 3554 3555 |
spin_lock_irqsave(&job->job_lock, flags); job->state_flags |= FC_RQST_STATE_DONE; job->ref_cnt--; spin_unlock_irqrestore(&job->job_lock, flags); |
9e4f5e296 [SCSI] FC Pass Th... |
3556 |
|
b5c6f7768 fc_transport: The... |
3557 |
blk_end_request_all(rq, rq->errors); |
9e4f5e296 [SCSI] FC Pass Th... |
3558 3559 |
fc_destroy_bsgjob(job); } |
9e4f5e296 [SCSI] FC Pass Th... |
3560 3561 3562 3563 3564 3565 3566 3567 3568 3569 3570 3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 |
/** * fc_bsg_job_timeout - handler for when a bsg request timesout * @req: request that timed out */ static enum blk_eh_timer_return fc_bsg_job_timeout(struct request *req) { struct fc_bsg_job *job = (void *) req->special; struct Scsi_Host *shost = job->shost; struct fc_internal *i = to_fc_internal(shost->transportt); unsigned long flags; int err = 0, done = 0; if (job->rport && job->rport->port_state == FC_PORTSTATE_BLOCKED) return BLK_EH_RESET_TIMER; spin_lock_irqsave(&job->job_lock, flags); if (job->state_flags & FC_RQST_STATE_DONE) done = 1; else job->ref_cnt++; spin_unlock_irqrestore(&job->job_lock, flags); if (!done && i->f->bsg_timeout) { /* call LLDD to abort the i/o as it has timed out */ err = i->f->bsg_timeout(job); |
b8f08645f [SCSI] scsi_trans... |
3586 3587 3588 3589 |
if (err == -EAGAIN) { job->ref_cnt--; return BLK_EH_RESET_TIMER; } else if (err) |
9e4f5e296 [SCSI] FC Pass Th... |
3590 3591 3592 3593 |
printk(KERN_ERR "ERROR: FC BSG request timeout - LLD " "abort failed with status %d ", err); } |
9e4f5e296 [SCSI] FC Pass Th... |
3594 |
/* the blk_end_sync_io() doesn't check the error */ |
47e7e89ed fc_transport: Sel... |
3595 3596 3597 3598 |
if (done) return BLK_EH_NOT_HANDLED; else return BLK_EH_HANDLED; |
9e4f5e296 [SCSI] FC Pass Th... |
3599 |
} |
9e4f5e296 [SCSI] FC Pass Th... |
3600 3601 3602 3603 3604 3605 3606 3607 3608 3609 3610 3611 3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626 3627 3628 3629 3630 3631 3632 3633 3634 3635 3636 3637 3638 3639 3640 3641 3642 3643 3644 3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658 3659 3660 3661 3662 3663 3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678 3679 3680 3681 3682 3683 3684 3685 3686 3687 3688 3689 3690 3691 3692 3693 3694 3695 3696 3697 3698 3699 |
static int fc_bsg_map_buffer(struct fc_bsg_buffer *buf, struct request *req) { size_t sz = (sizeof(struct scatterlist) * req->nr_phys_segments); BUG_ON(!req->nr_phys_segments); buf->sg_list = kzalloc(sz, GFP_KERNEL); if (!buf->sg_list) return -ENOMEM; sg_init_table(buf->sg_list, req->nr_phys_segments); buf->sg_cnt = blk_rq_map_sg(req->q, req, buf->sg_list); buf->payload_len = blk_rq_bytes(req); return 0; } /** * fc_req_to_bsgjob - Allocate/create the fc_bsg_job structure for the * bsg request * @shost: SCSI Host corresponding to the bsg object * @rport: (optional) FC Remote Port corresponding to the bsg object * @req: BSG request that needs a job structure */ static int fc_req_to_bsgjob(struct Scsi_Host *shost, struct fc_rport *rport, struct request *req) { struct fc_internal *i = to_fc_internal(shost->transportt); struct request *rsp = req->next_rq; struct fc_bsg_job *job; int ret; BUG_ON(req->special); job = kzalloc(sizeof(struct fc_bsg_job) + i->f->dd_bsg_size, GFP_KERNEL); if (!job) return -ENOMEM; /* * Note: this is a bit silly. * The request gets formatted as a SGIO v4 ioctl request, which * then gets reformatted as a blk request, which then gets * reformatted as a fc bsg request. And on completion, we have * to wrap return results such that SGIO v4 thinks it was a scsi * status. I hope this was all worth it. */ req->special = job; job->shost = shost; job->rport = rport; job->req = req; if (i->f->dd_bsg_size) job->dd_data = (void *)&job[1]; spin_lock_init(&job->job_lock); job->request = (struct fc_bsg_request *)req->cmd; job->request_len = req->cmd_len; job->reply = req->sense; job->reply_len = SCSI_SENSE_BUFFERSIZE; /* Size of sense buffer * allocated */ if (req->bio) { ret = fc_bsg_map_buffer(&job->request_payload, req); if (ret) goto failjob_rls_job; } if (rsp && rsp->bio) { ret = fc_bsg_map_buffer(&job->reply_payload, rsp); if (ret) goto failjob_rls_rqst_payload; } job->job_done = fc_bsg_jobdone; if (rport) job->dev = &rport->dev; else job->dev = &shost->shost_gendev; get_device(job->dev); /* take a reference for the request */ job->ref_cnt = 1; return 0; failjob_rls_rqst_payload: kfree(job->request_payload.sg_list); failjob_rls_job: kfree(job); return -ENOMEM; } enum fc_dispatch_result { FC_DISPATCH_BREAK, /* on return, q is locked, break from q loop */ FC_DISPATCH_LOCKED, /* on return, q is locked, continue on */ FC_DISPATCH_UNLOCKED, /* on return, q is unlocked, continue on */ }; /** * fc_bsg_host_dispatch - process fc host bsg requests and dispatch to LLDD |
5415907af [SCSI] scsi_trans... |
3700 |
* @q: fc host request queue |
9e4f5e296 [SCSI] FC Pass Th... |
3701 3702 3703 3704 3705 3706 3707 3708 3709 3710 3711 3712 3713 3714 3715 3716 3717 3718 3719 3720 3721 3722 3723 3724 3725 3726 3727 3728 3729 3730 3731 3732 3733 3734 3735 3736 3737 3738 3739 3740 3741 3742 3743 3744 3745 3746 3747 3748 3749 3750 3751 3752 3753 3754 3755 3756 3757 3758 3759 3760 3761 3762 3763 3764 3765 3766 3767 3768 3769 |
* @shost: scsi host rport attached to * @job: bsg job to be processed */ static enum fc_dispatch_result fc_bsg_host_dispatch(struct request_queue *q, struct Scsi_Host *shost, struct fc_bsg_job *job) { struct fc_internal *i = to_fc_internal(shost->transportt); int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ int ret; /* Validate the host command */ switch (job->request->msgcode) { case FC_BSG_HST_ADD_RPORT: cmdlen += sizeof(struct fc_bsg_host_add_rport); break; case FC_BSG_HST_DEL_RPORT: cmdlen += sizeof(struct fc_bsg_host_del_rport); break; case FC_BSG_HST_ELS_NOLOGIN: cmdlen += sizeof(struct fc_bsg_host_els); /* there better be a xmt and rcv payloads */ if ((!job->request_payload.payload_len) || (!job->reply_payload.payload_len)) { ret = -EINVAL; goto fail_host_msg; } break; case FC_BSG_HST_CT: cmdlen += sizeof(struct fc_bsg_host_ct); /* there better be xmt and rcv payloads */ if ((!job->request_payload.payload_len) || (!job->reply_payload.payload_len)) { ret = -EINVAL; goto fail_host_msg; } break; case FC_BSG_HST_VENDOR: cmdlen += sizeof(struct fc_bsg_host_vendor); if ((shost->hostt->vendor_id == 0L) || (job->request->rqst_data.h_vendor.vendor_id != shost->hostt->vendor_id)) { ret = -ESRCH; goto fail_host_msg; } break; default: ret = -EBADR; goto fail_host_msg; } /* check if we really have all the request data needed */ if (job->request_len < cmdlen) { ret = -ENOMSG; goto fail_host_msg; } ret = i->f->bsg_request(job); if (!ret) return FC_DISPATCH_UNLOCKED; fail_host_msg: /* return the errno failure code as the only status */ BUG_ON(job->reply_len < sizeof(uint32_t)); |
61ec33eb7 [SCSI] scsi_trans... |
3770 |
job->reply->reply_payload_rcv_len = 0; |
9e4f5e296 [SCSI] FC Pass Th... |
3771 3772 3773 3774 3775 3776 3777 3778 3779 3780 3781 3782 3783 3784 |
job->reply->result = ret; job->reply_len = sizeof(uint32_t); fc_bsg_jobdone(job); return FC_DISPATCH_UNLOCKED; } /* * fc_bsg_goose_queue - restart rport queue in case it was stopped * @rport: rport to be restarted */ static void fc_bsg_goose_queue(struct fc_rport *rport) { |
9e4f5e296 [SCSI] FC Pass Th... |
3785 3786 |
if (!rport->rqst_q) return; |
c21e6beba block: get rid of... |
3787 3788 3789 |
/* * This get/put dance makes no sense */ |
9e4f5e296 [SCSI] FC Pass Th... |
3790 |
get_device(&rport->dev); |
c21e6beba block: get rid of... |
3791 |
blk_run_queue_async(rport->rqst_q); |
9e4f5e296 [SCSI] FC Pass Th... |
3792 3793 |
put_device(&rport->dev); } |
9e4f5e296 [SCSI] FC Pass Th... |
3794 3795 |
/** * fc_bsg_rport_dispatch - process rport bsg requests and dispatch to LLDD |
5415907af [SCSI] scsi_trans... |
3796 |
* @q: rport request queue |
9e4f5e296 [SCSI] FC Pass Th... |
3797 3798 3799 3800 3801 3802 3803 3804 3805 3806 3807 3808 3809 3810 3811 3812 3813 3814 3815 3816 3817 3818 3819 3820 3821 3822 3823 3824 3825 3826 3827 3828 3829 3830 3831 3832 3833 3834 3835 3836 3837 3838 3839 3840 3841 3842 |
* @shost: scsi host rport attached to * @rport: rport request destined to * @job: bsg job to be processed */ static enum fc_dispatch_result fc_bsg_rport_dispatch(struct request_queue *q, struct Scsi_Host *shost, struct fc_rport *rport, struct fc_bsg_job *job) { struct fc_internal *i = to_fc_internal(shost->transportt); int cmdlen = sizeof(uint32_t); /* start with length of msgcode */ int ret; /* Validate the rport command */ switch (job->request->msgcode) { case FC_BSG_RPT_ELS: cmdlen += sizeof(struct fc_bsg_rport_els); goto check_bidi; case FC_BSG_RPT_CT: cmdlen += sizeof(struct fc_bsg_rport_ct); check_bidi: /* there better be xmt and rcv payloads */ if ((!job->request_payload.payload_len) || (!job->reply_payload.payload_len)) { ret = -EINVAL; goto fail_rport_msg; } break; default: ret = -EBADR; goto fail_rport_msg; } /* check if we really have all the request data needed */ if (job->request_len < cmdlen) { ret = -ENOMSG; goto fail_rport_msg; } ret = i->f->bsg_request(job); if (!ret) return FC_DISPATCH_UNLOCKED; fail_rport_msg: /* return the errno failure code as the only status */ BUG_ON(job->reply_len < sizeof(uint32_t)); |
61ec33eb7 [SCSI] scsi_trans... |
3843 |
job->reply->reply_payload_rcv_len = 0; |
9e4f5e296 [SCSI] FC Pass Th... |
3844 3845 3846 3847 3848 3849 3850 3851 3852 3853 3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 |
job->reply->result = ret; job->reply_len = sizeof(uint32_t); fc_bsg_jobdone(job); return FC_DISPATCH_UNLOCKED; } /** * fc_bsg_request_handler - generic handler for bsg requests * @q: request queue to manage * @shost: Scsi_Host related to the bsg object * @rport: FC remote port related to the bsg object (optional) * @dev: device structure for bsg object */ static void fc_bsg_request_handler(struct request_queue *q, struct Scsi_Host *shost, struct fc_rport *rport, struct device *dev) { struct request *req; struct fc_bsg_job *job; enum fc_dispatch_result ret; if (!get_device(dev)) return; |
7eaceacca block: remove per... |
3868 |
while (1) { |
2bc1c59db [SCSI] fc class: ... |
3869 3870 3871 |
if (rport && (rport->port_state == FC_PORTSTATE_BLOCKED) && !(rport->flags & FC_RPORT_FAST_FAIL_TIMEDOUT)) break; |
9e4f5e296 [SCSI] FC Pass Th... |
3872 3873 3874 3875 3876 3877 3878 3879 |
req = blk_fetch_request(q); if (!req) break; if (rport && (rport->port_state != FC_PORTSTATE_ONLINE)) { req->errors = -ENXIO; spin_unlock_irq(q->queue_lock); |
d88a714bf [SCSI] scsi_trans... |
3880 |
blk_end_request_all(req, -ENXIO); |
9e4f5e296 [SCSI] FC Pass Th... |
3881 3882 3883 3884 3885 3886 3887 3888 3889 |
spin_lock_irq(q->queue_lock); continue; } spin_unlock_irq(q->queue_lock); ret = fc_req_to_bsgjob(shost, rport, req); if (ret) { req->errors = ret; |
d88a714bf [SCSI] scsi_trans... |
3890 |
blk_end_request_all(req, ret); |
9e4f5e296 [SCSI] FC Pass Th... |
3891 3892 3893 3894 3895 3896 3897 3898 3899 |
spin_lock_irq(q->queue_lock); continue; } job = req->special; /* check if we have the msgcode value at least */ if (job->request_len < sizeof(uint32_t)) { BUG_ON(job->reply_len < sizeof(uint32_t)); |
61ec33eb7 [SCSI] scsi_trans... |
3900 |
job->reply->reply_payload_rcv_len = 0; |
9e4f5e296 [SCSI] FC Pass Th... |
3901 3902 3903 3904 3905 3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 |
job->reply->result = -ENOMSG; job->reply_len = sizeof(uint32_t); fc_bsg_jobdone(job); spin_lock_irq(q->queue_lock); continue; } /* the dispatch routines will unlock the queue_lock */ if (rport) ret = fc_bsg_rport_dispatch(q, shost, rport, job); else ret = fc_bsg_host_dispatch(q, shost, job); /* did dispatcher hit state that can't process any more */ if (ret == FC_DISPATCH_BREAK) break; /* did dispatcher had released the lock */ if (ret == FC_DISPATCH_UNLOCKED) spin_lock_irq(q->queue_lock); } spin_unlock_irq(q->queue_lock); put_device(dev); spin_lock_irq(q->queue_lock); } /** * fc_bsg_host_handler - handler for bsg requests for a fc host * @q: fc host request queue */ static void fc_bsg_host_handler(struct request_queue *q) { struct Scsi_Host *shost = q->queuedata; fc_bsg_request_handler(q, shost, NULL, &shost->shost_gendev); } /** * fc_bsg_rport_handler - handler for bsg requests for a fc rport * @q: rport request queue */ static void fc_bsg_rport_handler(struct request_queue *q) { struct fc_rport *rport = q->queuedata; struct Scsi_Host *shost = rport_to_shost(rport); fc_bsg_request_handler(q, shost, rport, &rport->dev); } /** * fc_bsg_hostadd - Create and add the bsg hooks so we can receive requests * @shost: shost for fc_host * @fc_host: fc_host adding the structures to */ static int fc_bsg_hostadd(struct Scsi_Host *shost, struct fc_host_attrs *fc_host) { struct device *dev = &shost->shost_gendev; struct fc_internal *i = to_fc_internal(shost->transportt); struct request_queue *q; int err; |
3c559ea8f [SCSI] scsi_trans... |
3968 |
char bsg_name[20]; |
9e4f5e296 [SCSI] FC Pass Th... |
3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 |
fc_host->rqst_q = NULL; if (!i->f->bsg_request) return -ENOTSUPP; snprintf(bsg_name, sizeof(bsg_name), "fc_host%d", shost->host_no); q = __scsi_alloc_queue(shost, fc_bsg_host_handler); if (!q) { printk(KERN_ERR "fc_host%d: bsg interface failed to " "initialize - no request queue ", shost->host_no); return -ENOMEM; } q->queuedata = shost; queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
b5c6f7768 fc_transport: The... |
3989 |
blk_queue_softirq_done(q, fc_bsg_softirq_done); |
9e4f5e296 [SCSI] FC Pass Th... |
3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031 4032 4033 4034 4035 4036 |
blk_queue_rq_timed_out(q, fc_bsg_job_timeout); blk_queue_rq_timeout(q, FC_DEFAULT_BSG_TIMEOUT); err = bsg_register_queue(q, dev, bsg_name, NULL); if (err) { printk(KERN_ERR "fc_host%d: bsg interface failed to " "initialize - register queue ", shost->host_no); blk_cleanup_queue(q); return err; } fc_host->rqst_q = q; return 0; } /** * fc_bsg_rportadd - Create and add the bsg hooks so we can receive requests * @shost: shost that rport is attached to * @rport: rport that the bsg hooks are being attached to */ static int fc_bsg_rportadd(struct Scsi_Host *shost, struct fc_rport *rport) { struct device *dev = &rport->dev; struct fc_internal *i = to_fc_internal(shost->transportt); struct request_queue *q; int err; rport->rqst_q = NULL; if (!i->f->bsg_request) return -ENOTSUPP; q = __scsi_alloc_queue(shost, fc_bsg_rport_handler); if (!q) { printk(KERN_ERR "%s: bsg interface failed to " "initialize - no request queue ", dev->kobj.name); return -ENOMEM; } q->queuedata = rport; queue_flag_set_unlocked(QUEUE_FLAG_BIDI, q); |
b5c6f7768 fc_transport: The... |
4037 |
blk_queue_softirq_done(q, fc_bsg_softirq_done); |
9e4f5e296 [SCSI] FC Pass Th... |
4038 4039 4040 4041 4042 4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 |
blk_queue_rq_timed_out(q, fc_bsg_job_timeout); blk_queue_rq_timeout(q, BLK_DEFAULT_SG_TIMEOUT); err = bsg_register_queue(q, dev, NULL, NULL); if (err) { printk(KERN_ERR "%s: bsg interface failed to " "initialize - register queue ", dev->kobj.name); blk_cleanup_queue(q); return err; } rport->rqst_q = q; return 0; } /** * fc_bsg_remove - Deletes the bsg hooks on fchosts/rports * @q: the request_queue that is to be torn down. |
78d16341f [SCSI] scsi_trans... |
4059 4060 4061 4062 4063 |
* * Notes: * Before unregistering the queue empty any requests that are blocked * * |
9e4f5e296 [SCSI] FC Pass Th... |
4064 4065 4066 4067 |
*/ static void fc_bsg_remove(struct request_queue *q) { |
78d16341f [SCSI] scsi_trans... |
4068 4069 |
struct request *req; /* block request */ int counts; /* totals for request_list count and starved */ |
9e4f5e296 [SCSI] FC Pass Th... |
4070 |
if (q) { |
78d16341f [SCSI] scsi_trans... |
4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 |
/* Stop taking in new requests */ spin_lock_irq(q->queue_lock); blk_stop_queue(q); /* drain all requests in the queue */ while (1) { /* need the lock to fetch a request * this may fetch the same reqeust as the previous pass */ req = blk_fetch_request(q); /* save requests in use and starved */ counts = q->rq.count[0] + q->rq.count[1] + q->rq.starved[0] + q->rq.starved[1]; spin_unlock_irq(q->queue_lock); /* any requests still outstanding? */ if (counts == 0) break; /* This may be the same req as the previous iteration, * always send the blk_end_request_all after a prefetch. * It is not okay to not end the request because the * prefetch started the request. */ if (req) { /* return -ENXIO to indicate that this queue is * going away */ req->errors = -ENXIO; blk_end_request_all(req, -ENXIO); } msleep(200); /* allow bsg to possibly finish */ spin_lock_irq(q->queue_lock); } |
9e4f5e296 [SCSI] FC Pass Th... |
4105 4106 4107 4108 |
bsg_unregister_queue(q); blk_cleanup_queue(q); } } |
9ef3e4a45 [SCSI] fc_transpo... |
4109 4110 |
/* Original Author: Martin Hicks */ MODULE_AUTHOR("James Smart"); |
1da177e4c Linux-2.6.12-rc2 |
4111 4112 4113 4114 4115 |
MODULE_DESCRIPTION("FC Transport Attributes"); MODULE_LICENSE("GPL"); module_init(fc_transport_init); module_exit(fc_transport_exit); |