| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * FiberChannel transport specific attributes exported to sysfs. |
| * |
| * Copyright (c) 2003 Silicon Graphics, Inc. All rights reserved. |
| * Copyright (C) 2004-2007 James Smart, Emulex Corporation |
| * Rewrite for host, target, device, and remote port attributes, |
| * statistics, and service functions... |
| * Add vports, etc |
| */ |
| #include <linux/module.h> |
| #include <linux/init.h> |
| #include <linux/slab.h> |
| #include <linux/delay.h> |
| #include <linux/kernel.h> |
| #include <linux/bsg-lib.h> |
| #include <scsi/scsi_device.h> |
| #include <scsi/scsi_host.h> |
| #include <scsi/scsi_transport.h> |
| #include <scsi/scsi_transport_fc.h> |
| #include <scsi/scsi_cmnd.h> |
| #include <net/netlink.h> |
| #include <scsi/scsi_netlink_fc.h> |
| #include <scsi/scsi_bsg_fc.h> |
| #include <uapi/scsi/fc/fc_els.h> |
| #include "scsi_priv.h" |
| |
| static int fc_queue_work(struct Scsi_Host *, struct work_struct *); |
| static void fc_vport_sched_delete(struct work_struct *work); |
| static int fc_vport_setup(struct Scsi_Host *shost, int channel, |
| struct device *pdev, struct fc_vport_identifiers *ids, |
| struct fc_vport **vport); |
| 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 *); |
| static void fc_li_stats_update(struct fc_fn_li_desc *li_desc, |
| struct fc_fpin_stats *stats); |
| static void fc_delivery_stats_update(u32 reason_code, |
| struct fc_fpin_stats *stats); |
| static void fc_cn_stats_update(u16 event_type, struct fc_fpin_stats *stats); |
| |
| /* |
| * 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."); |
| |
| /* |
| * Redefine so that we can have same named attributes in the |
| * sdev/starget/host objects. |
| */ |
| #define FC_DEVICE_ATTR(_prefix,_name,_mode,_show,_store) \ |
| struct device_attribute device_attr_##_prefix##_##_name = \ |
| __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; \ |
| \ |
| for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
| 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; \ |
| \ |
| for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
| 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)" }, |
| { FC_PORTTYPE_PTP, "Point-To-Point (direct nport connection)" }, |
| { FC_PORTTYPE_NPIV, "NPIV VPORT" }, |
| }; |
| fc_enum_name_search(port_type, fc_port_type, fc_port_type_names) |
| #define FC_PORTTYPE_MAX_NAMELEN 50 |
| |
| /* Reuse fc_port_type enum function for vport_type */ |
| #define get_fc_vport_type_name get_fc_port_type_name |
| |
| |
| /* 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_LINK_FPIN, "link_FPIN" }, |
| { 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 |
| |
| |
| /* Convert fc_port_state values to ascii string name */ |
| static struct { |
| enum fc_port_state value; |
| char *name; |
| int matchlen; |
| } fc_port_state_names[] = { |
| { FC_PORTSTATE_UNKNOWN, "Unknown", 7}, |
| { FC_PORTSTATE_NOTPRESENT, "Not Present", 11 }, |
| { FC_PORTSTATE_ONLINE, "Online", 6 }, |
| { FC_PORTSTATE_OFFLINE, "Offline", 7 }, |
| { FC_PORTSTATE_BLOCKED, "Blocked", 7 }, |
| { FC_PORTSTATE_BYPASSED, "Bypassed", 8 }, |
| { FC_PORTSTATE_DIAGNOSTICS, "Diagnostics", 11 }, |
| { FC_PORTSTATE_LINKDOWN, "Linkdown", 8 }, |
| { FC_PORTSTATE_ERROR, "Error", 5 }, |
| { FC_PORTSTATE_LOOPBACK, "Loopback", 8 }, |
| { FC_PORTSTATE_DELETED, "Deleted", 7 }, |
| { FC_PORTSTATE_MARGINAL, "Marginal", 8 }, |
| }; |
| fc_enum_name_search(port_state, fc_port_state, fc_port_state_names) |
| fc_enum_name_match(port_state, fc_port_state, fc_port_state_names) |
| #define FC_PORTSTATE_MAX_NAMELEN 20 |
| |
| |
| /* 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 |
| |
| |
| /* Convert fc_tgtid_binding_type values to ascii string name */ |
| static const struct { |
| 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; \ |
| \ |
| for (i = 0; i < ARRAY_SIZE(table); i++) { \ |
| if (table[i].value & table_key) { \ |
| len += sprintf(buf + len, "%s%s", \ |
| prefix, table[i].name); \ |
| prefix = ", "; \ |
| } \ |
| } \ |
| len += sprintf(buf + len, "\n"); \ |
| return len; \ |
| } |
| |
| |
| /* Convert FC_COS bit values to ascii string name */ |
| static const struct { |
| 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 */ |
| static const struct { |
| 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" }, |
| { FC_PORTSPEED_8GBIT, "8 Gbit" }, |
| { FC_PORTSPEED_16GBIT, "16 Gbit" }, |
| { FC_PORTSPEED_32GBIT, "32 Gbit" }, |
| { FC_PORTSPEED_20GBIT, "20 Gbit" }, |
| { FC_PORTSPEED_40GBIT, "40 Gbit" }, |
| { FC_PORTSPEED_50GBIT, "50 Gbit" }, |
| { FC_PORTSPEED_100GBIT, "100 Gbit" }, |
| { FC_PORTSPEED_25GBIT, "25 Gbit" }, |
| { FC_PORTSPEED_64GBIT, "64 Gbit" }, |
| { FC_PORTSPEED_128GBIT, "128 Gbit" }, |
| { FC_PORTSPEED_256GBIT, "256 Gbit" }, |
| { 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, "\n"); |
| return len; |
| } |
| |
| |
| /* Convert FC_PORT_ROLE bit values to ascii string name */ |
| static const struct { |
| u32 value; |
| char *name; |
| } 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" }, |
| { FC_PORT_ROLE_FCP_DUMMY_INITIATOR, "FCP Dummy Initiator" }, |
| { FC_PORT_ROLE_NVME_INITIATOR, "NVMe Initiator" }, |
| { FC_PORT_ROLE_NVME_TARGET, "NVMe Target" }, |
| { FC_PORT_ROLE_NVME_DISCOVERY, "NVMe Discovery" }, |
| }; |
| fc_bitfield_name_search(port_roles, fc_port_role_names) |
| |
| /* |
| * 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 |
| |
| |
| 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); |
| |
| /* |
| * Attribute counts pre object type... |
| * Increase these values if you add attributes |
| */ |
| #define FC_STARGET_NUM_ATTRS 3 |
| #define FC_RPORT_NUM_ATTRS 10 |
| #define FC_VPORT_NUM_ATTRS 9 |
| #define FC_HOST_NUM_ATTRS 29 |
| |
| 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. |
| */ |
| struct device_attribute private_starget_attrs[ |
| FC_STARGET_NUM_ATTRS]; |
| struct device_attribute *starget_attrs[FC_STARGET_NUM_ATTRS + 1]; |
| |
| struct device_attribute private_host_attrs[FC_HOST_NUM_ATTRS]; |
| struct device_attribute *host_attrs[FC_HOST_NUM_ATTRS + 1]; |
| |
| struct transport_container rport_attr_cont; |
| struct device_attribute private_rport_attrs[FC_RPORT_NUM_ATTRS]; |
| struct device_attribute *rport_attrs[FC_RPORT_NUM_ATTRS + 1]; |
| |
| struct transport_container vport_attr_cont; |
| struct device_attribute private_vport_attrs[FC_VPORT_NUM_ATTRS]; |
| struct device_attribute *vport_attrs[FC_VPORT_NUM_ATTRS + 1]; |
| }; |
| |
| #define to_fc_internal(tmpl) container_of(tmpl, struct fc_internal, t) |
| |
| static int fc_target_setup(struct transport_container *tc, struct device *dev, |
| struct device *cdev) |
| { |
| 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); |
| |
| static int fc_host_setup(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); |
| |
| /* |
| * 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. |
| */ |
| 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)); |
| fc_host->supported_speeds = FC_PORTSPEED_UNKNOWN; |
| fc_host->maxframe_size = -1; |
| fc_host->max_npiv_vports = 0; |
| memset(fc_host->serial_number, 0, |
| sizeof(fc_host->serial_number)); |
| memset(fc_host->manufacturer, 0, |
| sizeof(fc_host->manufacturer)); |
| memset(fc_host->model, 0, |
| sizeof(fc_host->model)); |
| memset(fc_host->model_description, 0, |
| sizeof(fc_host->model_description)); |
| memset(fc_host->hardware_version, 0, |
| sizeof(fc_host->hardware_version)); |
| memset(fc_host->driver_version, 0, |
| sizeof(fc_host->driver_version)); |
| memset(fc_host->firmware_version, 0, |
| sizeof(fc_host->firmware_version)); |
| memset(fc_host->optionrom_version, 0, |
| sizeof(fc_host->optionrom_version)); |
| |
| 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; |
| memset(fc_host->symbolic_name, 0, sizeof(fc_host->symbolic_name)); |
| memset(fc_host->system_hostname, 0, sizeof(fc_host->system_hostname)); |
| memset(&fc_host->fpin_stats, 0, sizeof(fc_host->fpin_stats)); |
| |
| fc_host->tgtid_bind_type = FC_TGTID_BIND_BY_WWPN; |
| |
| INIT_LIST_HEAD(&fc_host->rports); |
| INIT_LIST_HEAD(&fc_host->rport_bindings); |
| INIT_LIST_HEAD(&fc_host->vports); |
| fc_host->next_rport_number = 0; |
| fc_host->next_target_id = 0; |
| fc_host->next_vport_number = 0; |
| fc_host->npiv_vports_inuse = 0; |
| |
| snprintf(fc_host->work_q_name, sizeof(fc_host->work_q_name), |
| "fc_wq_%d", shost->host_no); |
| fc_host->work_q = alloc_workqueue("%s", 0, 0, fc_host->work_q_name); |
| if (!fc_host->work_q) |
| return -ENOMEM; |
| |
| fc_host->dev_loss_tmo = fc_dev_loss_tmo; |
| snprintf(fc_host->devloss_work_q_name, |
| sizeof(fc_host->devloss_work_q_name), |
| "fc_dl_%d", shost->host_no); |
| fc_host->devloss_work_q = alloc_workqueue("%s", 0, 0, |
| fc_host->devloss_work_q_name); |
| if (!fc_host->devloss_work_q) { |
| destroy_workqueue(fc_host->work_q); |
| fc_host->work_q = NULL; |
| return -ENOMEM; |
| } |
| |
| 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); |
| return 0; |
| } |
| |
| static DECLARE_TRANSPORT_CLASS(fc_host_class, |
| "fc_host", |
| fc_host_setup, |
| fc_host_remove, |
| 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); |
| |
| /* |
| * 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); |
| |
| /* |
| * Netlink Infrastructure |
| */ |
| |
| static atomic_t fc_event_seq; |
| |
| /** |
| * fc_get_event_number - Obtain the next sequential FC event number |
| * |
| * Notes: |
| * We could have inlined this, but it would have required fc_event_seq to |
| * be exposed. For now, live with the subroutine call. |
| * Atomic used to avoid lock/unlock... |
| */ |
| u32 |
| fc_get_event_number(void) |
| { |
| return atomic_add_return(1, &fc_event_seq); |
| } |
| EXPORT_SYMBOL(fc_get_event_number); |
| |
| /** |
| * fc_host_post_fc_event - routine to do the work of posting an event |
| * on an fc_host. |
| * @shost: host the event occurred on |
| * @event_number: fc event number obtained from get_fc_event_number() |
| * @event_code: fc_host event being posted |
| * @data_len: amount, in bytes, of event data |
| * @data_buf: pointer to event data |
| * @vendor_id: value for Vendor id |
| * |
| * Notes: |
| * This routine assumes no locks are held on entry. |
| */ |
| void |
| fc_host_post_fc_event(struct Scsi_Host *shost, u32 event_number, |
| enum fc_host_event_code event_code, |
| u32 data_len, char *data_buf, u64 vendor_id) |
| { |
| struct sk_buff *skb; |
| struct nlmsghdr *nlh; |
| struct fc_nl_event *event; |
| const char *name; |
| u32 len; |
| int err; |
| |
| if (!data_buf || data_len < 4) |
| data_len = 0; |
| |
| if (!scsi_nl_sock) { |
| err = -ENOENT; |
| goto send_fail; |
| } |
| |
| len = FC_NL_MSGALIGN(sizeof(*event) + data_len); |
| |
| skb = nlmsg_new(len, GFP_KERNEL); |
| if (!skb) { |
| err = -ENOBUFS; |
| goto send_fail; |
| } |
| |
| nlh = nlmsg_put(skb, 0, 0, SCSI_TRANSPORT_MSG, len, 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 = ktime_get_real_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 = event_code; |
| if (data_len) |
| memcpy(&event->event_data, data_buf, data_len); |
| |
| nlmsg_multicast(scsi_nl_sock, skb, 0, SCSI_NL_GRP_FC_EVENTS, |
| GFP_KERNEL); |
| 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\n", |
| __func__, shost->host_no, |
| (name) ? name : "<unknown>", |
| (data_len) ? *((u32 *)data_buf) : 0xFFFFFFFF, err); |
| return; |
| } |
| EXPORT_SYMBOL(fc_host_post_fc_event); |
| |
| /** |
| * fc_host_post_event - called to post an even on an fc_host. |
| * @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. |
| */ |
| void |
| fc_host_post_event(struct Scsi_Host *shost, u32 event_number, |
| enum fc_host_event_code event_code, u32 event_data) |
| { |
| fc_host_post_fc_event(shost, event_number, event_code, |
| (u32)sizeof(u32), (char *)&event_data, 0); |
| } |
| EXPORT_SYMBOL(fc_host_post_event); |
| |
| |
| /** |
| * fc_host_post_vendor_event - called to post a vendor unique event |
| * on an fc_host |
| * @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 |
| * @vendor_id: Vendor id |
| * |
| * Notes: |
| * This routine assumes no locks are held on entry. |
| */ |
| void |
| fc_host_post_vendor_event(struct Scsi_Host *shost, u32 event_number, |
| u32 data_len, char * data_buf, u64 vendor_id) |
| { |
| fc_host_post_fc_event(shost, event_number, FCH_EVT_VENDOR_UNIQUE, |
| data_len, data_buf, vendor_id); |
| } |
| EXPORT_SYMBOL(fc_host_post_vendor_event); |
| |
| /** |
| * fc_find_rport_by_wwpn - find the fc_rport pointer for a given wwpn |
| * @shost: host the fc_rport is associated with |
| * @wwpn: wwpn of the fc_rport device |
| * |
| * Notes: |
| * This routine assumes no locks are held on entry. |
| */ |
| struct fc_rport * |
| fc_find_rport_by_wwpn(struct Scsi_Host *shost, u64 wwpn) |
| { |
| struct fc_rport *rport; |
| unsigned long flags; |
| |
| spin_lock_irqsave(shost->host_lock, flags); |
| |
| list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
| if (rport->port_state != FC_PORTSTATE_ONLINE) |
| continue; |
| |
| if (rport->port_name == wwpn) { |
| spin_unlock_irqrestore(shost->host_lock, flags); |
| return rport; |
| } |
| } |
| |
| spin_unlock_irqrestore(shost->host_lock, flags); |
| return NULL; |
| } |
| EXPORT_SYMBOL(fc_find_rport_by_wwpn); |
| |
| static void |
| fc_li_stats_update(struct fc_fn_li_desc *li_desc, |
| struct fc_fpin_stats *stats) |
| { |
| stats->li += be32_to_cpu(li_desc->event_count); |
| switch (be16_to_cpu(li_desc->event_type)) { |
| case FPIN_LI_UNKNOWN: |
| stats->li_failure_unknown += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_LINK_FAILURE: |
| stats->li_link_failure_count += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_LOSS_OF_SYNC: |
| stats->li_loss_of_sync_count += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_LOSS_OF_SIG: |
| stats->li_loss_of_signals_count += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_PRIM_SEQ_ERR: |
| stats->li_prim_seq_err_count += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_INVALID_TX_WD: |
| stats->li_invalid_tx_word_count += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_INVALID_CRC: |
| stats->li_invalid_crc_count += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| case FPIN_LI_DEVICE_SPEC: |
| stats->li_device_specific += |
| be32_to_cpu(li_desc->event_count); |
| break; |
| } |
| } |
| |
| static void |
| fc_delivery_stats_update(u32 reason_code, struct fc_fpin_stats *stats) |
| { |
| stats->dn++; |
| switch (reason_code) { |
| case FPIN_DELI_UNKNOWN: |
| stats->dn_unknown++; |
| break; |
| case FPIN_DELI_TIMEOUT: |
| stats->dn_timeout++; |
| break; |
| case FPIN_DELI_UNABLE_TO_ROUTE: |
| stats->dn_unable_to_route++; |
| break; |
| case FPIN_DELI_DEVICE_SPEC: |
| stats->dn_device_specific++; |
| break; |
| } |
| } |
| |
| static void |
| fc_cn_stats_update(u16 event_type, struct fc_fpin_stats *stats) |
| { |
| stats->cn++; |
| switch (event_type) { |
| case FPIN_CONGN_CLEAR: |
| stats->cn_clear++; |
| break; |
| case FPIN_CONGN_LOST_CREDIT: |
| stats->cn_lost_credit++; |
| break; |
| case FPIN_CONGN_CREDIT_STALL: |
| stats->cn_credit_stall++; |
| break; |
| case FPIN_CONGN_OVERSUBSCRIPTION: |
| stats->cn_oversubscription++; |
| break; |
| case FPIN_CONGN_DEVICE_SPEC: |
| stats->cn_device_specific++; |
| } |
| } |
| |
| /* |
| * fc_fpin_li_stats_update - routine to update Link Integrity |
| * event statistics. |
| * @shost: host the FPIN was received on |
| * @tlv: pointer to link integrity descriptor |
| * |
| */ |
| static void |
| fc_fpin_li_stats_update(struct Scsi_Host *shost, struct fc_tlv_desc *tlv) |
| { |
| u8 i; |
| struct fc_rport *rport = NULL; |
| struct fc_rport *attach_rport = NULL; |
| struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| struct fc_fn_li_desc *li_desc = (struct fc_fn_li_desc *)tlv; |
| u64 wwpn; |
| |
| rport = fc_find_rport_by_wwpn(shost, |
| be64_to_cpu(li_desc->attached_wwpn)); |
| if (rport && |
| (rport->roles & FC_PORT_ROLE_FCP_TARGET || |
| rport->roles & FC_PORT_ROLE_NVME_TARGET)) { |
| attach_rport = rport; |
| fc_li_stats_update(li_desc, &attach_rport->fpin_stats); |
| } |
| |
| if (be32_to_cpu(li_desc->pname_count) > 0) { |
| for (i = 0; |
| i < be32_to_cpu(li_desc->pname_count); |
| i++) { |
| wwpn = be64_to_cpu(li_desc->pname_list[i]); |
| rport = fc_find_rport_by_wwpn(shost, wwpn); |
| if (rport && |
| (rport->roles & FC_PORT_ROLE_FCP_TARGET || |
| rport->roles & FC_PORT_ROLE_NVME_TARGET)) { |
| if (rport == attach_rport) |
| continue; |
| fc_li_stats_update(li_desc, |
| &rport->fpin_stats); |
| } |
| } |
| } |
| |
| if (fc_host->port_name == be64_to_cpu(li_desc->attached_wwpn)) |
| fc_li_stats_update(li_desc, &fc_host->fpin_stats); |
| } |
| |
| /* |
| * fc_fpin_delivery_stats_update - routine to update Delivery Notification |
| * event statistics. |
| * @shost: host the FPIN was received on |
| * @tlv: pointer to delivery descriptor |
| * |
| */ |
| static void |
| fc_fpin_delivery_stats_update(struct Scsi_Host *shost, |
| struct fc_tlv_desc *tlv) |
| { |
| struct fc_rport *rport = NULL; |
| struct fc_rport *attach_rport = NULL; |
| struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| struct fc_fn_deli_desc *dn_desc = (struct fc_fn_deli_desc *)tlv; |
| u32 reason_code = be32_to_cpu(dn_desc->deli_reason_code); |
| |
| rport = fc_find_rport_by_wwpn(shost, |
| be64_to_cpu(dn_desc->attached_wwpn)); |
| if (rport && |
| (rport->roles & FC_PORT_ROLE_FCP_TARGET || |
| rport->roles & FC_PORT_ROLE_NVME_TARGET)) { |
| attach_rport = rport; |
| fc_delivery_stats_update(reason_code, |
| &attach_rport->fpin_stats); |
| } |
| |
| if (fc_host->port_name == be64_to_cpu(dn_desc->attached_wwpn)) |
| fc_delivery_stats_update(reason_code, &fc_host->fpin_stats); |
| } |
| |
| /* |
| * fc_fpin_peer_congn_stats_update - routine to update Peer Congestion |
| * event statistics. |
| * @shost: host the FPIN was received on |
| * @tlv: pointer to peer congestion descriptor |
| * |
| */ |
| static void |
| fc_fpin_peer_congn_stats_update(struct Scsi_Host *shost, |
| struct fc_tlv_desc *tlv) |
| { |
| u8 i; |
| struct fc_rport *rport = NULL; |
| struct fc_rport *attach_rport = NULL; |
| struct fc_fn_peer_congn_desc *pc_desc = |
| (struct fc_fn_peer_congn_desc *)tlv; |
| u16 event_type = be16_to_cpu(pc_desc->event_type); |
| u64 wwpn; |
| |
| rport = fc_find_rport_by_wwpn(shost, |
| be64_to_cpu(pc_desc->attached_wwpn)); |
| if (rport && |
| (rport->roles & FC_PORT_ROLE_FCP_TARGET || |
| rport->roles & FC_PORT_ROLE_NVME_TARGET)) { |
| attach_rport = rport; |
| fc_cn_stats_update(event_type, &attach_rport->fpin_stats); |
| } |
| |
| if (be32_to_cpu(pc_desc->pname_count) > 0) { |
| for (i = 0; |
| i < be32_to_cpu(pc_desc->pname_count); |
| i++) { |
| wwpn = be64_to_cpu(pc_desc->pname_list[i]); |
| rport = fc_find_rport_by_wwpn(shost, wwpn); |
| if (rport && |
| (rport->roles & FC_PORT_ROLE_FCP_TARGET || |
| rport->roles & FC_PORT_ROLE_NVME_TARGET)) { |
| if (rport == attach_rport) |
| continue; |
| fc_cn_stats_update(event_type, |
| &rport->fpin_stats); |
| } |
| } |
| } |
| } |
| |
| /* |
| * fc_fpin_congn_stats_update - routine to update Congestion |
| * event statistics. |
| * @shost: host the FPIN was received on |
| * @tlv: pointer to congestion descriptor |
| * |
| */ |
| static void |
| fc_fpin_congn_stats_update(struct Scsi_Host *shost, |
| struct fc_tlv_desc *tlv) |
| { |
| struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| struct fc_fn_congn_desc *congn = (struct fc_fn_congn_desc *)tlv; |
| |
| fc_cn_stats_update(be16_to_cpu(congn->event_type), |
| &fc_host->fpin_stats); |
| } |
| |
| /** |
| * fc_host_fpin_rcv - routine to process a received FPIN. |
| * @shost: host the FPIN was received on |
| * @fpin_len: length of FPIN payload, in bytes |
| * @fpin_buf: pointer to FPIN payload |
| * |
| * Notes: |
| * This routine assumes no locks are held on entry. |
| */ |
| void |
| fc_host_fpin_rcv(struct Scsi_Host *shost, u32 fpin_len, char *fpin_buf) |
| { |
| struct fc_els_fpin *fpin = (struct fc_els_fpin *)fpin_buf; |
| struct fc_tlv_desc *tlv; |
| u32 desc_cnt = 0, bytes_remain; |
| u32 dtag; |
| |
| /* Update Statistics */ |
| tlv = (struct fc_tlv_desc *)&fpin->fpin_desc[0]; |
| bytes_remain = fpin_len - offsetof(struct fc_els_fpin, fpin_desc); |
| bytes_remain = min_t(u32, bytes_remain, be32_to_cpu(fpin->desc_len)); |
| |
| while (bytes_remain >= FC_TLV_DESC_HDR_SZ && |
| bytes_remain >= FC_TLV_DESC_SZ_FROM_LENGTH(tlv)) { |
| dtag = be32_to_cpu(tlv->desc_tag); |
| switch (dtag) { |
| case ELS_DTAG_LNK_INTEGRITY: |
| fc_fpin_li_stats_update(shost, tlv); |
| break; |
| case ELS_DTAG_DELIVERY: |
| fc_fpin_delivery_stats_update(shost, tlv); |
| break; |
| case ELS_DTAG_PEER_CONGEST: |
| fc_fpin_peer_congn_stats_update(shost, tlv); |
| break; |
| case ELS_DTAG_CONGESTION: |
| fc_fpin_congn_stats_update(shost, tlv); |
| } |
| |
| desc_cnt++; |
| bytes_remain -= FC_TLV_DESC_SZ_FROM_LENGTH(tlv); |
| tlv = fc_tlv_next_desc(tlv); |
| } |
| |
| fc_host_post_fc_event(shost, fc_get_event_number(), |
| FCH_EVT_LINK_FPIN, fpin_len, fpin_buf, 0); |
| } |
| EXPORT_SYMBOL(fc_host_fpin_rcv); |
| |
| |
| static __init int fc_transport_init(void) |
| { |
| int error; |
| |
| atomic_set(&fc_event_seq, 0); |
| |
| error = transport_class_register(&fc_host_class); |
| if (error) |
| return error; |
| error = transport_class_register(&fc_vport_class); |
| if (error) |
| goto unreg_host_class; |
| error = transport_class_register(&fc_rport_class); |
| if (error) |
| 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; |
| } |
| |
| 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); |
| transport_class_unregister(&fc_vport_class); |
| } |
| |
| /* |
| * FC Remote Port Attribute Management |
| */ |
| |
| #define fc_rport_show_function(field, format_string, sz, cast) \ |
| static ssize_t \ |
| show_fc_rport_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fc_rport *rport = transport_class_to_rport(dev); \ |
| struct Scsi_Host *shost = rport_to_shost(rport); \ |
| struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| if ((i->f->get_rport_##field) && \ |
| !((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
| (rport->port_state == FC_PORTSTATE_DELETED) || \ |
| (rport->port_state == FC_PORTSTATE_NOTPRESENT))) \ |
| i->f->get_rport_##field(rport); \ |
| return snprintf(buf, sz, format_string, cast rport->field); \ |
| } |
| |
| #define fc_rport_store_function(field) \ |
| static ssize_t \ |
| store_fc_rport_##field(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| int val; \ |
| struct fc_rport *rport = transport_class_to_rport(dev); \ |
| struct Scsi_Host *shost = rport_to_shost(rport); \ |
| struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| char *cp; \ |
| if ((rport->port_state == FC_PORTSTATE_BLOCKED) || \ |
| (rport->port_state == FC_PORTSTATE_DELETED) || \ |
| (rport->port_state == FC_PORTSTATE_NOTPRESENT)) \ |
| return -EBUSY; \ |
| val = simple_strtoul(buf, &cp, 0); \ |
| if (*cp && (*cp != '\n')) \ |
| return -EINVAL; \ |
| 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, ) \ |
| static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 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) \ |
| static FC_DEVICE_ATTR(rport, field, S_IRUGO | S_IWUSR, \ |
| show_fc_rport_##field, \ |
| store_fc_rport_##field) |
| |
| |
| #define fc_private_rport_show_function(field, format_string, sz, cast) \ |
| static ssize_t \ |
| show_fc_rport_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fc_rport *rport = transport_class_to_rport(dev); \ |
| 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, ) \ |
| static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(rport, field, S_IRUGO, \ |
| show_fc_rport_##field, NULL) |
| |
| |
| #define fc_private_rport_rd_enum_attr(title, maxlen) \ |
| static ssize_t \ |
| show_fc_rport_##title (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fc_rport *rport = transport_class_to_rport(dev); \ |
| const char *name; \ |
| name = get_fc_##title##_name(rport->title); \ |
| if (!name) \ |
| return -EINVAL; \ |
| return snprintf(buf, maxlen, "%s\n", name); \ |
| } \ |
| static FC_DEVICE_ATTR(rport, title, S_IRUGO, \ |
| show_fc_rport_##title, NULL) |
| |
| |
| #define SETUP_RPORT_ATTRIBUTE_RD(field) \ |
| i->private_rport_attrs[count] = device_attr_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++ |
| |
| #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(field) \ |
| i->private_rport_attrs[count] = device_attr_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]; \ |
| count++ |
| |
| #define SETUP_RPORT_ATTRIBUTE_RW(field) \ |
| i->private_rport_attrs[count] = device_attr_rport_##field; \ |
| 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++ |
| |
| #define SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(field) \ |
| { \ |
| i->private_rport_attrs[count] = device_attr_rport_##field; \ |
| i->rport_attrs[count] = &i->private_rport_attrs[count]; \ |
| count++; \ |
| } |
| |
| |
| /* The FC Transport Remote Port Attributes: */ |
| |
| /* Fixed Remote Port Attributes */ |
| |
| fc_private_rport_rd_attr(maxframe_size, "%u bytes\n", 20); |
| |
| static ssize_t |
| show_fc_rport_supported_classes (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct fc_rport *rport = transport_class_to_rport(dev); |
| if (rport->supported_classes == FC_COS_UNSPECIFIED) |
| return snprintf(buf, 20, "unspecified\n"); |
| return get_fc_cos_names(rport->supported_classes, buf); |
| } |
| static FC_DEVICE_ATTR(rport, supported_classes, S_IRUGO, |
| show_fc_rport_supported_classes, NULL); |
| |
| /* Dynamic Remote Port Attributes */ |
| |
| /* |
| * dev_loss_tmo attribute |
| */ |
| static int fc_str_to_dev_loss(const char *buf, unsigned long *val) |
| { |
| char *cp; |
| |
| *val = simple_strtoul(buf, &cp, 0); |
| if (*cp && (*cp != '\n')) |
| 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) |
| { |
| struct Scsi_Host *shost = rport_to_shost(rport); |
| struct fc_internal *i = to_fc_internal(shost->transportt); |
| |
| if ((rport->port_state == FC_PORTSTATE_BLOCKED) || |
| (rport->port_state == FC_PORTSTATE_DELETED) || |
| (rport->port_state == FC_PORTSTATE_NOTPRESENT)) |
| return -EBUSY; |
| /* |
| * Check for overflow; dev_loss_tmo is u32 |
| */ |
| if (val > UINT_MAX) |
| return -EINVAL; |
| |
| /* |
| * 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; |
| |
| i->f->set_rport_dev_loss_tmo(rport, val); |
| return 0; |
| } |
| |
| fc_rport_show_function(dev_loss_tmo, "%d\n", 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; |
| return count; |
| } |
| static FC_DEVICE_ATTR(rport, dev_loss_tmo, S_IRUGO | S_IWUSR, |
| show_fc_rport_dev_loss_tmo, store_fc_rport_dev_loss_tmo); |
| |
| |
| /* Private Remote Port Attributes */ |
| |
| fc_private_rport_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| fc_private_rport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| fc_private_rport_rd_attr(port_id, "0x%06x\n", 20); |
| |
| static ssize_t |
| show_fc_rport_roles (struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct fc_rport *rport = transport_class_to_rport(dev); |
| |
| /* 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\n"); |
| case FC_FABCTLR_PORTID: |
| return snprintf(buf, 30, "Fabric Controller\n"); |
| case FC_DIRSRVR_PORTID: |
| return snprintf(buf, 30, "Directory Server\n"); |
| case FC_TIMESRVR_PORTID: |
| return snprintf(buf, 30, "Time Server\n"); |
| case FC_MGMTSRVR_PORTID: |
| return snprintf(buf, 30, "Management Server\n"); |
| default: |
| return snprintf(buf, 30, "Unknown Fabric Entity\n"); |
| } |
| } else { |
| if (rport->roles == FC_PORT_ROLE_UNKNOWN) |
| return snprintf(buf, 20, "unknown\n"); |
| return get_fc_port_roles_names(rport->roles, buf); |
| } |
| } |
| static FC_DEVICE_ATTR(rport, roles, S_IRUGO, |
| show_fc_rport_roles, NULL); |
| |
| static ssize_t fc_rport_set_marginal_state(struct device *dev, |
| struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct fc_rport *rport = transport_class_to_rport(dev); |
| enum fc_port_state port_state; |
| int ret = 0; |
| |
| ret = get_fc_port_state_match(buf, &port_state); |
| if (ret) |
| return -EINVAL; |
| if (port_state == FC_PORTSTATE_MARGINAL) { |
| /* |
| * Change the state to Marginal only if the |
| * current rport state is Online |
| * Allow only Online->Marginal |
| */ |
| if (rport->port_state == FC_PORTSTATE_ONLINE) |
| rport->port_state = port_state; |
| else |
| return -EINVAL; |
| } else if (port_state == FC_PORTSTATE_ONLINE) { |
| /* |
| * Change the state to Online only if the |
| * current rport state is Marginal |
| * Allow only Marginal->Online |
| */ |
| if (rport->port_state == FC_PORTSTATE_MARGINAL) |
| rport->port_state = port_state; |
| else |
| return -EINVAL; |
| } else |
| return -EINVAL; |
| return count; |
| } |
| |
| static ssize_t |
| show_fc_rport_port_state(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| const char *name; |
| struct fc_rport *rport = transport_class_to_rport(dev); |
| |
| name = get_fc_port_state_name(rport->port_state); |
| if (!name) |
| return -EINVAL; |
| |
| return snprintf(buf, 20, "%s\n", name); |
| } |
| |
| static FC_DEVICE_ATTR(rport, port_state, 0444 | 0200, |
| show_fc_rport_port_state, fc_rport_set_marginal_state); |
| |
| fc_private_rport_rd_attr(scsi_target_id, "%d\n", 20); |
| |
| /* |
| * fast_io_fail_tmo attribute |
| */ |
| static ssize_t |
| show_fc_rport_fast_io_fail_tmo (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct fc_rport *rport = transport_class_to_rport(dev); |
| |
| if (rport->fast_io_fail_tmo == -1) |
| return snprintf(buf, 5, "off\n"); |
| return snprintf(buf, 20, "%d\n", rport->fast_io_fail_tmo); |
| } |
| |
| static ssize_t |
| store_fc_rport_fast_io_fail_tmo(struct device *dev, |
| struct device_attribute *attr, const char *buf, |
| size_t count) |
| { |
| int val; |
| char *cp; |
| struct fc_rport *rport = transport_class_to_rport(dev); |
| |
| 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); |
| if ((*cp && (*cp != '\n')) || (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)) |
| return -EINVAL; |
| |
| rport->fast_io_fail_tmo = val; |
| } |
| return count; |
| } |
| static FC_DEVICE_ATTR(rport, fast_io_fail_tmo, S_IRUGO | S_IWUSR, |
| show_fc_rport_fast_io_fail_tmo, store_fc_rport_fast_io_fail_tmo); |
| |
| #define fc_rport_fpin_statistic(name) \ |
| static ssize_t fc_rport_fpinstat_##name(struct device *cd, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| struct fc_rport *rport = transport_class_to_rport(cd); \ |
| \ |
| return snprintf(buf, 20, "0x%llx\n", rport->fpin_stats.name); \ |
| } \ |
| static FC_DEVICE_ATTR(rport, fpin_##name, 0444, fc_rport_fpinstat_##name, NULL) |
| |
| fc_rport_fpin_statistic(dn); |
| fc_rport_fpin_statistic(dn_unknown); |
| fc_rport_fpin_statistic(dn_timeout); |
| fc_rport_fpin_statistic(dn_unable_to_route); |
| fc_rport_fpin_statistic(dn_device_specific); |
| fc_rport_fpin_statistic(cn); |
| fc_rport_fpin_statistic(cn_clear); |
| fc_rport_fpin_statistic(cn_lost_credit); |
| fc_rport_fpin_statistic(cn_credit_stall); |
| fc_rport_fpin_statistic(cn_oversubscription); |
| fc_rport_fpin_statistic(cn_device_specific); |
| fc_rport_fpin_statistic(li); |
| fc_rport_fpin_statistic(li_failure_unknown); |
| fc_rport_fpin_statistic(li_link_failure_count); |
| fc_rport_fpin_statistic(li_loss_of_sync_count); |
| fc_rport_fpin_statistic(li_loss_of_signals_count); |
| fc_rport_fpin_statistic(li_prim_seq_err_count); |
| fc_rport_fpin_statistic(li_invalid_tx_word_count); |
| fc_rport_fpin_statistic(li_invalid_crc_count); |
| fc_rport_fpin_statistic(li_device_specific); |
| |
| static struct attribute *fc_rport_statistics_attrs[] = { |
| &device_attr_rport_fpin_dn.attr, |
| &device_attr_rport_fpin_dn_unknown.attr, |
| &device_attr_rport_fpin_dn_timeout.attr, |
| &device_attr_rport_fpin_dn_unable_to_route.attr, |
| &device_attr_rport_fpin_dn_device_specific.attr, |
| &device_attr_rport_fpin_li.attr, |
| &device_attr_rport_fpin_li_failure_unknown.attr, |
| &device_attr_rport_fpin_li_link_failure_count.attr, |
| &device_attr_rport_fpin_li_loss_of_sync_count.attr, |
| &device_attr_rport_fpin_li_loss_of_signals_count.attr, |
| &device_attr_rport_fpin_li_prim_seq_err_count.attr, |
| &device_attr_rport_fpin_li_invalid_tx_word_count.attr, |
| &device_attr_rport_fpin_li_invalid_crc_count.attr, |
| &device_attr_rport_fpin_li_device_specific.attr, |
| &device_attr_rport_fpin_cn.attr, |
| &device_attr_rport_fpin_cn_clear.attr, |
| &device_attr_rport_fpin_cn_lost_credit.attr, |
| &device_attr_rport_fpin_cn_credit_stall.attr, |
| &device_attr_rport_fpin_cn_oversubscription.attr, |
| &device_attr_rport_fpin_cn_device_specific.attr, |
| NULL |
| }; |
| |
| static struct attribute_group fc_rport_statistics_group = { |
| .name = "statistics", |
| .attrs = fc_rport_statistics_attrs, |
| }; |
| |
| |
| /* |
| * FC SCSI Target Attribute Management |
| */ |
| |
| /* |
| * Note: in the target show function we recognize when the remote |
| * port is in the hierarchy and do not allow the driver to get |
| * 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 \ |
| show_fc_starget_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct scsi_target *starget = transport_class_to_starget(dev); \ |
| 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, ) \ |
| static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(starget, field, S_IRUGO, \ |
| show_fc_starget_##field, NULL) |
| |
| #define SETUP_STARGET_ATTRIBUTE_RD(field) \ |
| i->private_starget_attrs[count] = device_attr_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++ |
| |
| #define SETUP_STARGET_ATTRIBUTE_RW(field) \ |
| i->private_starget_attrs[count] = device_attr_starget_##field; \ |
| 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\n", 20, unsigned long long); |
| fc_starget_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| fc_starget_rd_attr(port_id, "0x%06x\n", 20); |
| |
| |
| /* |
| * FC Virtual Port Attribute Management |
| */ |
| |
| #define fc_vport_show_function(field, format_string, sz, cast) \ |
| static ssize_t \ |
| show_fc_vport_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fc_vport *vport = transport_class_to_vport(dev); \ |
| 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 \ |
| store_fc_vport_##field(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| int val; \ |
| struct fc_vport *vport = transport_class_to_vport(dev); \ |
| 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 != '\n')) \ |
| return -EINVAL; \ |
| i->f->set_vport_##field(vport, val); \ |
| return count; \ |
| } |
| |
| #define fc_vport_store_str_function(field, slen) \ |
| static ssize_t \ |
| store_fc_vport_##field(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| struct fc_vport *vport = transport_class_to_vport(dev); \ |
| 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] == '\n') \ |
| 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, ) \ |
| static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
| 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) \ |
| static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
| show_fc_vport_##field, \ |
| store_fc_vport_##field) |
| |
| #define fc_private_vport_show_function(field, format_string, sz, cast) \ |
| static ssize_t \ |
| show_fc_vport_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct fc_vport *vport = transport_class_to_vport(dev); \ |
| return snprintf(buf, sz, format_string, cast vport->field); \ |
| } |
| |
| #define fc_private_vport_store_u32_function(field) \ |
| static ssize_t \ |
| store_fc_vport_##field(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| u32 val; \ |
| struct fc_vport *vport = transport_class_to_vport(dev); \ |
| char *cp; \ |
| if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) \ |
| return -EBUSY; \ |
| val = simple_strtoul(buf, &cp, 0); \ |
| if (*cp && (*cp != '\n')) \ |
| 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, ) \ |
| static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(vport, field, S_IRUGO, \ |
| 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) \ |
| static FC_DEVICE_ATTR(vport, field, S_IRUGO | S_IWUSR, \ |
| show_fc_vport_##field, \ |
| store_fc_vport_##field) |
| |
| |
| #define fc_private_vport_rd_enum_attr(title, maxlen) \ |
| static ssize_t \ |
| show_fc_vport_##title (struct device *dev, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| struct fc_vport *vport = transport_class_to_vport(dev); \ |
| const char *name; \ |
| name = get_fc_##title##_name(vport->title); \ |
| if (!name) \ |
| return -EINVAL; \ |
| return snprintf(buf, maxlen, "%s\n", name); \ |
| } \ |
| static FC_DEVICE_ATTR(vport, title, S_IRUGO, \ |
| show_fc_vport_##title, NULL) |
| |
| |
| #define SETUP_VPORT_ATTRIBUTE_RD(field) \ |
| i->private_vport_attrs[count] = device_attr_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]; \ |
| if (i->f->get_##field) \ |
| count++ |
| /* NOTE: Above MACRO differs: checks function not show bit */ |
| |
| #define SETUP_PRIVATE_VPORT_ATTRIBUTE_RD(field) \ |
| i->private_vport_attrs[count] = device_attr_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++ |
| |
| #define SETUP_VPORT_ATTRIBUTE_WR(field) \ |
| i->private_vport_attrs[count] = device_attr_vport_##field; \ |
| 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) \ |
| i->private_vport_attrs[count] = device_attr_vport_##field; \ |
| 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) \ |
| { \ |
| i->private_vport_attrs[count] = device_attr_vport_##field; \ |
| 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\n", 20, unsigned long long); |
| fc_private_vport_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| |
| static ssize_t |
| show_fc_vport_roles (struct device *dev, struct device_attribute *attr, |
| char *buf) |
| { |
| struct fc_vport *vport = transport_class_to_vport(dev); |
| |
| if (vport->roles == FC_PORT_ROLE_UNKNOWN) |
| return snprintf(buf, 20, "unknown\n"); |
| return get_fc_port_roles_names(vport->roles, buf); |
| } |
| static FC_DEVICE_ATTR(vport, roles, S_IRUGO, show_fc_vport_roles, NULL); |
| |
| fc_private_vport_rd_enum_attr(vport_type, FC_PORTTYPE_MAX_NAMELEN); |
| |
| fc_private_vport_show_function(symbolic_name, "%s\n", |
| FC_VPORT_SYMBOLIC_NAMELEN + 1, ) |
| fc_vport_store_str_function(symbolic_name, FC_VPORT_SYMBOLIC_NAMELEN) |
| static FC_DEVICE_ATTR(vport, symbolic_name, S_IRUGO | S_IWUSR, |
| show_fc_vport_symbolic_name, store_fc_vport_symbolic_name); |
| |
| static ssize_t |
| store_fc_vport_delete(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct fc_vport *vport = transport_class_to_vport(dev); |
| struct Scsi_Host *shost = vport_to_shost(vport); |
| 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); |
| |
| fc_queue_work(shost, &vport->vport_delete_work); |
| return count; |
| } |
| static FC_DEVICE_ATTR(vport, vport_delete, S_IWUSR, |
| NULL, store_fc_vport_delete); |
| |
| |
| /* |
| * Enable/Disable vport |
| * Write "1" to disable, write "0" to enable |
| */ |
| static ssize_t |
| store_fc_vport_disable(struct device *dev, struct device_attribute *attr, |
| const char *buf, |
| size_t count) |
| { |
| struct fc_vport *vport = transport_class_to_vport(dev); |
| 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; |
| } |
| static FC_DEVICE_ATTR(vport, vport_disable, S_IWUSR, |
| NULL, store_fc_vport_disable); |
| |
| |
| /* |
| * Host Attribute Management |
| */ |
| |
| #define fc_host_show_function(field, format_string, sz, cast) \ |
| static ssize_t \ |
| show_fc_host_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
| 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 \ |
| store_fc_host_##field(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| int val; \ |
| struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
| struct fc_internal *i = to_fc_internal(shost->transportt); \ |
| char *cp; \ |
| \ |
| val = simple_strtoul(buf, &cp, 0); \ |
| if (*cp && (*cp != '\n')) \ |
| return -EINVAL; \ |
| i->f->set_host_##field(shost, val); \ |
| return count; \ |
| } |
| |
| #define fc_host_store_str_function(field, slen) \ |
| static ssize_t \ |
| store_fc_host_##field(struct device *dev, \ |
| struct device_attribute *attr, \ |
| const char *buf, size_t count) \ |
| { \ |
| struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
| 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] == '\n') \ |
| cnt--; \ |
| if (cnt > ((slen) - 1)) \ |
| return -EINVAL; \ |
| memcpy(fc_host_##field(shost), buf, cnt); \ |
| i->f->set_host_##field(shost); \ |
| return count; \ |
| } |
| |
| #define fc_host_rd_attr(field, format_string, sz) \ |
| fc_host_show_function(field, format_string, sz, ) \ |
| static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 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) \ |
| static FC_DEVICE_ATTR(host, field, S_IRUGO | S_IWUSR, \ |
| show_fc_host_##field, \ |
| store_fc_host_##field) |
| |
| #define fc_host_rd_enum_attr(title, maxlen) \ |
| static ssize_t \ |
| show_fc_host_##title (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
| 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\n", name); \ |
| } \ |
| static FC_DEVICE_ATTR(host, title, S_IRUGO, show_fc_host_##title, NULL) |
| |
| #define SETUP_HOST_ATTRIBUTE_RD(field) \ |
| i->private_host_attrs[count] = device_attr_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 SETUP_HOST_ATTRIBUTE_RD_NS(field) \ |
| i->private_host_attrs[count] = device_attr_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]; \ |
| count++ |
| |
| #define SETUP_HOST_ATTRIBUTE_RW(field) \ |
| i->private_host_attrs[count] = device_attr_host_##field; \ |
| 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 \ |
| show_fc_host_##field (struct device *dev, \ |
| struct device_attribute *attr, char *buf) \ |
| { \ |
| struct Scsi_Host *shost = transport_class_to_shost(dev); \ |
| 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, ) \ |
| static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
| 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)) \ |
| static FC_DEVICE_ATTR(host, field, S_IRUGO, \ |
| show_fc_host_##field, NULL) |
| |
| #define SETUP_PRIVATE_HOST_ATTRIBUTE_RD(field) \ |
| i->private_host_attrs[count] = device_attr_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]; \ |
| count++ |
| |
| #define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \ |
| { \ |
| i->private_host_attrs[count] = device_attr_host_##field; \ |
| i->host_attrs[count] = &i->private_host_attrs[count]; \ |
| count++; \ |
| } |
| |
| |
| /* Fixed Host Attributes */ |
| |
| static ssize_t |
| show_fc_host_supported_classes (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| |
| if (fc_host_supported_classes(shost) == FC_COS_UNSPECIFIED) |
| return snprintf(buf, 20, "unspecified\n"); |
| |
| return get_fc_cos_names(fc_host_supported_classes(shost), buf); |
| } |
| static FC_DEVICE_ATTR(host, supported_classes, S_IRUGO, |
| show_fc_host_supported_classes, NULL); |
| |
| static ssize_t |
| show_fc_host_supported_fc4s (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| return (ssize_t)show_fc_fc4s(buf, fc_host_supported_fc4s(shost)); |
| } |
| static FC_DEVICE_ATTR(host, supported_fc4s, S_IRUGO, |
| show_fc_host_supported_fc4s, NULL); |
| |
| static ssize_t |
| show_fc_host_supported_speeds (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| |
| if (fc_host_supported_speeds(shost) == FC_PORTSPEED_UNKNOWN) |
| return snprintf(buf, 20, "unknown\n"); |
| |
| return get_fc_port_speed_names(fc_host_supported_speeds(shost), buf); |
| } |
| static FC_DEVICE_ATTR(host, supported_speeds, S_IRUGO, |
| show_fc_host_supported_speeds, NULL); |
| |
| |
| fc_private_host_rd_attr_cast(node_name, "0x%llx\n", 20, unsigned long long); |
| fc_private_host_rd_attr_cast(port_name, "0x%llx\n", 20, unsigned long long); |
| fc_private_host_rd_attr_cast(permanent_port_name, "0x%llx\n", 20, |
| unsigned long long); |
| fc_private_host_rd_attr(maxframe_size, "%u bytes\n", 20); |
| fc_private_host_rd_attr(max_npiv_vports, "%u\n", 20); |
| fc_private_host_rd_attr(serial_number, "%s\n", (FC_SERIAL_NUMBER_SIZE +1)); |
| fc_private_host_rd_attr(manufacturer, "%s\n", FC_SERIAL_NUMBER_SIZE + 1); |
| fc_private_host_rd_attr(model, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
| fc_private_host_rd_attr(model_description, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
| fc_private_host_rd_attr(hardware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); |
| fc_private_host_rd_attr(driver_version, "%s\n", FC_VERSION_STRING_SIZE + 1); |
| fc_private_host_rd_attr(firmware_version, "%s\n", FC_VERSION_STRING_SIZE + 1); |
| fc_private_host_rd_attr(optionrom_version, "%s\n", FC_VERSION_STRING_SIZE + 1); |
| |
| |
| /* Dynamic Host Attributes */ |
| |
| static ssize_t |
| show_fc_host_active_fc4s (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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)); |
| } |
| static FC_DEVICE_ATTR(host, active_fc4s, S_IRUGO, |
| show_fc_host_active_fc4s, NULL); |
| |
| static ssize_t |
| show_fc_host_speed (struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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\n"); |
| |
| return get_fc_port_speed_names(fc_host_speed(shost), buf); |
| } |
| static FC_DEVICE_ATTR(host, speed, S_IRUGO, |
| show_fc_host_speed, NULL); |
| |
| |
| fc_host_rd_attr(port_id, "0x%06x\n", 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\n", 20, unsigned long long); |
| fc_host_rd_attr(symbolic_name, "%s\n", FC_SYMBOLIC_NAME_SIZE + 1); |
| |
| fc_private_host_show_function(system_hostname, "%s\n", |
| FC_SYMBOLIC_NAME_SIZE + 1, ) |
| fc_host_store_str_function(system_hostname, FC_SYMBOLIC_NAME_SIZE) |
| static FC_DEVICE_ATTR(host, system_hostname, S_IRUGO | S_IWUSR, |
| show_fc_host_system_hostname, store_fc_host_system_hostname); |
| |
| |
| /* Private Host Attributes */ |
| |
| static ssize_t |
| show_fc_private_host_tgtid_bind_type(struct device *dev, |
| struct device_attribute *attr, char *buf) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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\n", name); |
| } |
| |
| #define get_list_head_entry(pos, head, member) \ |
| pos = list_entry((head)->next, typeof(*pos), member) |
| |
| static ssize_t |
| store_fc_private_host_tgtid_bind_type(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| struct fc_rport *rport; |
| 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); |
| while (!list_empty(&fc_host_rport_bindings(shost))) { |
| get_list_head_entry(rport, |
| &fc_host_rport_bindings(shost), peers); |
| list_del(&rport->peers); |
| rport->port_state = FC_PORTSTATE_DELETED; |
| fc_queue_work(shost, &rport->rport_delete_work); |
| } |
| spin_unlock_irqrestore(shost->host_lock, flags); |
| } |
| |
| fc_host_tgtid_bind_type(shost) = val; |
| return count; |
| } |
| |
| static FC_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR, |
| show_fc_private_host_tgtid_bind_type, |
| store_fc_private_host_tgtid_bind_type); |
| |
| static ssize_t |
| store_fc_private_host_issue_lip(struct device *dev, |
| struct device_attribute *attr, const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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; |
| } |
| |
| static FC_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL, |
| store_fc_private_host_issue_lip); |
| |
| 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; |
| } |
| |
| fc_private_host_show_function(dev_loss_tmo, "%d\n", 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\n", 20); |
| |
| /* |
| * Host Statistics Management |
| */ |
| |
| /* Show a given attribute in the statistics group */ |
| static ssize_t |
| fc_stat_show(const struct device *dev, char *buf, unsigned long offset) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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\n", |
| (unsigned long long)*(u64 *)(((u8 *) stats) + offset)); |
| } |
| return ret; |
| } |
| |
| |
| /* generate a read-only statistics attribute */ |
| #define fc_host_statistic(name) \ |
| static ssize_t show_fcstat_##name(struct device *cd, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| return fc_stat_show(cd, buf, \ |
| offsetof(struct fc_host_statistics, name)); \ |
| } \ |
| static FC_DEVICE_ATTR(host, name, S_IRUGO, show_fcstat_##name, NULL) |
| |
| 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); |
| fc_host_statistic(fcp_packet_alloc_failures); |
| fc_host_statistic(fcp_packet_aborts); |
| fc_host_statistic(fcp_frame_alloc_failures); |
| fc_host_statistic(fc_no_free_exch); |
| fc_host_statistic(fc_no_free_exch_xid); |
| fc_host_statistic(fc_xid_not_found); |
| fc_host_statistic(fc_xid_busy); |
| fc_host_statistic(fc_seq_not_found); |
| fc_host_statistic(fc_non_bls_resp); |
| fc_host_statistic(cn_sig_warn); |
| fc_host_statistic(cn_sig_alarm); |
| |
| |
| #define fc_host_fpin_statistic(name) \ |
| static ssize_t fc_host_fpinstat_##name(struct device *cd, \ |
| struct device_attribute *attr, \ |
| char *buf) \ |
| { \ |
| struct Scsi_Host *shost = transport_class_to_shost(cd); \ |
| struct fc_host_attrs *fc_host = shost_to_fc_host(shost); \ |
| \ |
| return snprintf(buf, 20, "0x%llx\n", fc_host->fpin_stats.name); \ |
| } \ |
| static FC_DEVICE_ATTR(host, fpin_##name, 0444, fc_host_fpinstat_##name, NULL) |
| |
| fc_host_fpin_statistic(dn); |
| fc_host_fpin_statistic(dn_unknown); |
| fc_host_fpin_statistic(dn_timeout); |
| fc_host_fpin_statistic(dn_unable_to_route); |
| fc_host_fpin_statistic(dn_device_specific); |
| fc_host_fpin_statistic(cn); |
| fc_host_fpin_statistic(cn_clear); |
| fc_host_fpin_statistic(cn_lost_credit); |
| fc_host_fpin_statistic(cn_credit_stall); |
| fc_host_fpin_statistic(cn_oversubscription); |
| fc_host_fpin_statistic(cn_device_specific); |
| fc_host_fpin_statistic(li); |
| fc_host_fpin_statistic(li_failure_unknown); |
| fc_host_fpin_statistic(li_link_failure_count); |
| fc_host_fpin_statistic(li_loss_of_sync_count); |
| fc_host_fpin_statistic(li_loss_of_signals_count); |
| fc_host_fpin_statistic(li_prim_seq_err_count); |
| fc_host_fpin_statistic(li_invalid_tx_word_count); |
| fc_host_fpin_statistic(li_invalid_crc_count); |
| fc_host_fpin_statistic(li_device_specific); |
| |
| static ssize_t |
| fc_reset_statistics(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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; |
| } |
| static FC_DEVICE_ATTR(host, reset_statistics, S_IWUSR, NULL, |
| fc_reset_statistics); |
| |
| static struct attribute *fc_statistics_attrs[] = { |
| &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_fcp_packet_alloc_failures.attr, |
| &device_attr_host_fcp_packet_aborts.attr, |
| &device_attr_host_fcp_frame_alloc_failures.attr, |
| &device_attr_host_fc_no_free_exch.attr, |
| &device_attr_host_fc_no_free_exch_xid.attr, |
| &device_attr_host_fc_xid_not_found.attr, |
| &device_attr_host_fc_xid_busy.attr, |
| &device_attr_host_fc_seq_not_found.attr, |
| &device_attr_host_fc_non_bls_resp.attr, |
| &device_attr_host_cn_sig_warn.attr, |
| &device_attr_host_cn_sig_alarm.attr, |
| &device_attr_host_reset_statistics.attr, |
| &device_attr_host_fpin_dn.attr, |
| &device_attr_host_fpin_dn_unknown.attr, |
| &device_attr_host_fpin_dn_timeout.attr, |
| &device_attr_host_fpin_dn_unable_to_route.attr, |
| &device_attr_host_fpin_dn_device_specific.attr, |
| &device_attr_host_fpin_li.attr, |
| &device_attr_host_fpin_li_failure_unknown.attr, |
| &device_attr_host_fpin_li_link_failure_count.attr, |
| &device_attr_host_fpin_li_loss_of_sync_count.attr, |
| &device_attr_host_fpin_li_loss_of_signals_count.attr, |
| &device_attr_host_fpin_li_prim_seq_err_count.attr, |
| &device_attr_host_fpin_li_invalid_tx_word_count.attr, |
| &device_attr_host_fpin_li_invalid_crc_count.attr, |
| &device_attr_host_fpin_li_device_specific.attr, |
| &device_attr_host_fpin_cn.attr, |
| &device_attr_host_fpin_cn_clear.attr, |
| &device_attr_host_fpin_cn_lost_credit.attr, |
| &device_attr_host_fpin_cn_credit_stall.attr, |
| &device_attr_host_fpin_cn_oversubscription.attr, |
| &device_attr_host_fpin_cn_device_specific.attr, |
| NULL |
| }; |
| |
| static struct attribute_group fc_statistics_group = { |
| .name = "statistics", |
| .attrs = fc_statistics_attrs, |
| }; |
| |
| |
| /* 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++) { |
| int value; |
| |
| value = hex_to_bin(*ns++); |
| if (value >= 0) |
| j = (j << 4) | value; |
| 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 |
| store_fc_host_vport_create(struct device *dev, struct device_attribute *attr, |
| const char *buf, size_t count) |
| { |
| struct Scsi_Host *shost = transport_class_to_shost(dev); |
| 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] == '\n') |
| 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 !!! */ |
| stat = fc_vport_setup(shost, 0, &shost->shost_gendev, &vid, &vport); |
| return stat ? stat : count; |
| } |
| static FC_DEVICE_ATTR(host, vport_create, S_IWUSR, NULL, |
| 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 |
| store_fc_host_vport_delete(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_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] == '\n') |
| 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)) { |
| if (vport->flags & (FC_VPORT_DEL | FC_VPORT_CREATING)) |
| break; |
| vport->flags |= FC_VPORT_DELETING; |
| match = 1; |
| break; |
| } |
| } |
| spin_unlock_irqrestore(shost->host_lock, flags); |
| |
| if (!match) |
| return -ENODEV; |
| |
| stat = fc_vport_terminate(vport); |
| return stat ? stat : count; |
| } |
| static FC_DEVICE_ATTR(host, vport_delete, S_IWUSR, NULL, |
| store_fc_host_vport_delete); |
| |
| |
| 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; |
| } |
| |
| |
| 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); |
| } |
| |
| static int scsi_is_fc_vport(const struct device *dev) |
| { |
| return dev->release == fc_vport_dev_release; |
| } |
| |
| 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; |
| } |
| |
| |
| /** |
| * fc_eh_timed_out - FC Transport I/O timeout intercept handler |
| * @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. |
| */ |
| enum blk_eh_timer_return |
| fc_eh_timed_out(struct scsi_cmnd *scmd) |
| { |
| struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device)); |
| |
| if (rport->port_state == FC_PORTSTATE_BLOCKED) |
| return BLK_EH_RESET_TIMER; |
| |
| return BLK_EH_DONE; |
| } |
| EXPORT_SYMBOL(fc_eh_timed_out); |
| |
| /* |
| * 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. |
| */ |
| static void |
| fc_user_scan_tgt(struct Scsi_Host *shost, uint channel, uint id, u64 lun) |
| { |
| struct fc_rport *rport; |
| unsigned long flags; |
| |
| spin_lock_irqsave(shost->host_lock, flags); |
| |
| list_for_each_entry(rport, &fc_host_rports(shost), peers) { |
| if (rport->scsi_target_id == -1) |
| continue; |
| |
| if ((rport->port_state != FC_PORTSTATE_ONLINE) && |
| (rport->port_state != FC_PORTSTATE_MARGINAL)) |
| continue; |
| |
| if ((channel == rport->channel) && |
| (id == rport->scsi_target_id)) { |
| spin_unlock_irqrestore(shost->host_lock, flags); |
| scsi_scan_target(&rport->dev, channel, id, lun, |
| SCSI_SCAN_MANUAL); |
| return; |
| } |
| } |
| |
| 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, u64 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); |
| |
| return 0; |
| } |
| |
| struct scsi_transport_template * |
| fc_attach_transport(struct fc_function_template *ft) |
| { |
| int count; |
| struct fc_internal *i = kzalloc(sizeof(struct fc_internal), |
| GFP_KERNEL); |
| |
| if (unlikely(!i)) |
| return NULL; |
| |
| 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; |
| i->rport_attr_cont.statistics = &fc_rport_statistics_group; |
| transport_container_register(&i->rport_attr_cont); |
| |
| 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); |
| |
| i->f = ft; |
| |
| /* Transport uses the shost workq for scsi scanning */ |
| i->t.create_work_queue = 1; |
| |
| i->t.user_scan = fc_user_scan; |
| |
| /* |
| * 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); |
| SETUP_HOST_ATTRIBUTE_RD(permanent_port_name); |
| SETUP_HOST_ATTRIBUTE_RD(supported_classes); |
| SETUP_HOST_ATTRIBUTE_RD(supported_fc4s); |
| SETUP_HOST_ATTRIBUTE_RD(supported_speeds); |
| SETUP_HOST_ATTRIBUTE_RD(maxframe_size); |
| if (ft->vport_create) { |
| SETUP_HOST_ATTRIBUTE_RD_NS(max_npiv_vports); |
| SETUP_HOST_ATTRIBUTE_RD_NS(npiv_vports_inuse); |
| } |
| SETUP_HOST_ATTRIBUTE_RD(serial_number); |
| SETUP_HOST_ATTRIBUTE_RD(manufacturer); |
| SETUP_HOST_ATTRIBUTE_RD(model); |
| SETUP_HOST_ATTRIBUTE_RD(model_description); |
| SETUP_HOST_ATTRIBUTE_RD(hardware_version); |
| SETUP_HOST_ATTRIBUTE_RD(driver_version); |
| SETUP_HOST_ATTRIBUTE_RD(firmware_version); |
| SETUP_HOST_ATTRIBUTE_RD(optionrom_version); |
| |
| 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); |
| SETUP_HOST_ATTRIBUTE_RD(symbolic_name); |
| SETUP_HOST_ATTRIBUTE_RW(system_hostname); |
| |
| /* Transport-managed attributes */ |
| SETUP_PRIVATE_HOST_ATTRIBUTE_RW(dev_loss_tmo); |
| SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type); |
| if (ft->issue_fc_host_lip) |
| SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip); |
| if (ft->vport_create) |
| SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_create); |
| if (ft->vport_delete) |
| SETUP_PRIVATE_HOST_ATTRIBUTE_RW(vport_delete); |
| |
| 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_RW(port_state); |
| SETUP_PRIVATE_RPORT_ATTRIBUTE_RD(scsi_target_id); |
| SETUP_PRIVATE_RPORT_ATTRIBUTE_RW(fast_io_fail_tmo); |
| |
| BUG_ON(count > FC_RPORT_NUM_ATTRS); |
| |
| i->rport_attrs[count] = NULL; |
| |
| /* |
| * 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; |
| |
| 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); |
| transport_container_unregister(&i->vport_attr_cont); |
| |
| kfree(i); |
| } |
| EXPORT_SYMBOL(fc_release_transport); |
| |
| /** |
| * 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: |
| * 1 - work queued for execution |
| * 0 - work is already queued |
| * -EINVAL - work queue doesn't exist |
| */ |
| 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.\n", 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. |
| */ |
| 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.\n", 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: |
| * 1 on success / 0 already queued / < 0 for error |
| */ |
| static int |
| fc_queue_devloss_work(struct Scsi_Host *shost, struct delayed_work *work, |
| 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.\n", 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. |
| */ |
| 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.\n", shost->hostt->name); |
| dump_stack(); |
| return; |
| } |
| |
| flush_workqueue(fc_host_devloss_work_q(shost)); |
| } |
| |
| |
| /** |
| * fc_remove_host - called to terminate any fc_transport-related elements for a scsi host. |
| * @shost: Which &Scsi_Host |
| * |
| * This routine is expected to be called immediately preceding the |
| * a driver's call to scsi_remove_host(). |
| * |
| * WARNING: A driver utilizing the fc_transport, which fails to call |
| * this routine prior to scsi_remove_host(), will leave dangling |
| * 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. |
| */ |
| void |
| fc_remove_host(struct Scsi_Host *shost) |
| { |
| struct fc_vport *vport = NULL, *next_vport = NULL; |
| struct fc_rport *rport = NULL, *next_rport = NULL; |
| struct workqueue_struct *work_q; |
| struct fc_host_attrs *fc_host = shost_to_fc_host(shost); |
| unsigned long flags; |
| |
| spin_lock_irqsave(shost->host_lock, flags); |
| |
| /* Remove any vports */ |
| list_for_each_entry_safe(vport, next_vport, &fc_host->vports, peers) { |
| vport->flags |= FC_VPORT_DELETING; |
| fc_queue_work(shost, &vport->vport_delete_work); |
| } |
| |
| /* Remove any remote ports */ |
| list_for_each_entry_safe(rport, next_rport, |
| &fc_host->rports, peers) { |
| list_del(&rport->peers); |
| rport->port_state = FC_PORTSTATE_DELETED; |
| fc_queue_work(shost, &rport->rport_delete_work); |
| } |
| |
| list_for_each_entry_safe(rport, next_rport, |
| &fc_host->rport_bindings, peers) { |
| list_del(&rport->peers); |
| rport->port_state = FC_PORTSTATE_DELETED; |
| fc_queue_work(shost, &rport->rport_delete_work); |
| } |
| |
| spin_unlock_irqrestore(shost->host_lock, flags); |
| |
| /* 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); |
| } |
| } |
| EXPORT_SYMBOL(fc_remove_host); |
| |
| 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. scsi-ml will fail incoming reqs. |
| */ |
| scsi_target_unblock(&rport->dev, SDEV_TRANSPORT_OFFLINE); |
| } |
| |
| /** |
| * fc_starget_delete - called to delete the scsi descendants of an rport |
| * @work: remote port to be operated on. |
| * |
| * Deletes target and all sdevs. |
| */ |
| static void |
| fc_starget_delete(struct work_struct *work) |
| { |
| struct fc_rport *rport = |
| container_of(work, struct fc_rport, stgt_delete_work); |
| |
| fc_terminate_rport_io(rport); |
| scsi_remove_target(&rport->dev); |
| } |
| |
| |
| /** |
| * fc_rport_final_delete - finish rport termination and delete it. |
| * @work: remote port to be deleted. |
| */ |
| static void |
| fc_rport_final_delete(struct work_struct *work) |
| { |
| struct fc_rport *rport = |
| container_of(work, struct fc_rport, rport_delete_work); |
| struct device *dev = &rport->dev; |
| struct Scsi_Host *shost = rport_to_shost(rport); |
| struct fc_internal *i = to_fc_internal(shost->transportt); |
| unsigned long flags; |
| int do_callback = 0; |
| |
| fc_terminate_rport_io(rport); |
| |
| /* |
| * if a scan is pending, flush the SCSI Host work_q so that |
| * that we can reclaim the rport scan work element. |
| */ |
| if (rport->flags & FC_RPORT_SCAN_PENDING) |
| scsi_flush_work(shost); |
| |
|
|