stat_work));
}
+static int zfcp_nameserver_enqueue(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
+
+ port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA,
+ ZFCP_DID_DIRECTORY_SERVICE);
+ if (!port)
+ return -ENXIO;
+ zfcp_port_put(port);
+
+ return 0;
+}
+
/*
* Enqueues an adapter at the end of the adapter list in the driver data.
* All adapter internal structures are set up.
/* initialize lock of associated request queue */
rwlock_init(&adapter->req_q.lock);
INIT_WORK(&adapter->stat_work, _zfcp_status_read_scheduler);
+ INIT_WORK(&adapter->scan_work, _zfcp_scan_ports_later);
/* mark adapter unusable as long as sysfs registration is not complete */
atomic_set_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
zfcp_data.adapters++;
+ zfcp_nameserver_enqueue(adapter);
+
goto out;
generic_services_failed:
int retval = 0;
unsigned long flags;
+ cancel_work_sync(&adapter->scan_work);
cancel_work_sync(&adapter->stat_work);
zfcp_adapter_scsi_unregister(adapter);
device_unregister(&adapter->generic_services);
kfree(port);
return NULL;
}
- port->d_id = d_id;
port->sysfs_device.parent = &adapter->generic_services;
} else {
snprintf(port->sysfs_device.bus_id,
BUS_ID_SIZE, "0x%016llx", wwpn);
port->sysfs_device.parent = &adapter->ccw_device->dev;
}
+
+ port->d_id = d_id;
+
port->sysfs_device.release = zfcp_sysfs_port_release;
dev_set_drvdata(&port->sysfs_device, port);
device_unregister(&port->sysfs_device);
}
-/* Enqueues a nameserver port */
-int
-zfcp_nameserver_enqueue(struct zfcp_adapter *adapter)
-{
- struct zfcp_port *port;
-
- port = zfcp_port_enqueue(adapter, 0, ZFCP_STATUS_PORT_WKA,
- ZFCP_DID_DIRECTORY_SERVICE);
- if (!port)
- return -ENXIO;
- zfcp_port_put(port);
-
- return 0;
-}
-
void zfcp_sg_free_table(struct scatterlist *sg, int count)
{
int i;
[145] = "recovery action being processed",
[146] = "recovery action ready for next step",
[147] = "qdio error inbound",
+ [148] = "nameserver needed for port scan",
+ [149] = "port scan",
+ [150] = "ptp attach",
+ [151] = "port validation failed",
};
static int zfcp_rec_dbf_view_format(debug_info_t *id, struct debug_view *view,
#define ZFCP_CT_DIRECTORY_SERVICE 0xFC
#define ZFCP_CT_NAME_SERVER 0x02
#define ZFCP_CT_SYNCHRONOUS 0x00
+#define ZFCP_CT_SCSI_FCP 0x08
+#define ZFCP_CT_UNABLE_TO_PERFORM_CMD 0x09
#define ZFCP_CT_GID_PN 0x0121
+#define ZFCP_CT_GPN_FT 0x0172
#define ZFCP_CT_MAX_SIZE 0x1020
#define ZFCP_CT_ACCEPT 0x8002
#define ZFCP_CT_REJECT 0x8001
#define ZFCP_STATUS_COMMON_ERP_INUSE 0x01000000
#define ZFCP_STATUS_COMMON_ACCESS_DENIED 0x00800000
#define ZFCP_STATUS_COMMON_ACCESS_BOXED 0x00400000
+#define ZFCP_STATUS_COMMON_NOESC 0x00200000
/* adapter status */
#define ZFCP_STATUS_ADAPTER_QDIOUP 0x00000002
struct fc_host_statistics *fc_stats;
struct fsf_qtcb_bottom_port *stats_reset_data;
unsigned long stats_reset;
+ struct work_struct scan_work;
};
/*
zfcp_erp_port_unblock(port);
break;
case ZFCP_ERP_FAILED :
+ if (atomic_test_mask(ZFCP_STATUS_COMMON_NOESC, &port->status)) {
+ zfcp_erp_port_block(port, 0);
+ result = ZFCP_ERP_EXIT;
+ }
atomic_inc(&port->erp_counter);
if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS)
zfcp_erp_port_failed(port, 22, NULL);
goto failed_openfcp;
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &erp_action->adapter->status);
+ schedule_work(&erp_action->adapter->scan_work);
goto out;
close_only:
return zfcp_erp_adapter_strategy_open_fsf_statusread(erp_action);
}
+static void zfcp_erp_open_ptp_port(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
+ port = zfcp_port_enqueue(adapter, adapter->peer_wwpn, 0,
+ adapter->peer_d_id);
+ if (!port) /* error or port already attached */
+ return;
+ zfcp_erp_port_reopen_internal(port, 0, 150, NULL);
+}
+
static int
zfcp_erp_adapter_strategy_open_fsf_xconfig(struct zfcp_erp_action *erp_action)
{
- int retval = ZFCP_ERP_SUCCEEDED;
int retries;
int sleep = ZFCP_EXCHANGE_CONFIG_DATA_FIRST_SLEEP;
struct zfcp_adapter *adapter = erp_action->adapter;
zfcp_erp_action_to_running(erp_action);
write_unlock_irq(&adapter->erp_lock);
if (zfcp_fsf_exchange_config_data(erp_action)) {
- retval = ZFCP_ERP_FAILED;
- break;
+ atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
+ &adapter->status);
+ return ZFCP_ERP_FAILED;
}
/*
if (!atomic_test_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
&adapter->status))
- retval = ZFCP_ERP_FAILED;
+ return ZFCP_ERP_FAILED;
- return retval;
+ if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP)
+ zfcp_erp_open_ptp_port(adapter);
+
+ return ZFCP_ERP_SUCCEEDED;
}
static int
retval = zfcp_erp_port_strategy_open_port(erp_action);
break;
}
- if (!(adapter->nameserver_port)) {
- retval = zfcp_nameserver_enqueue(adapter);
- if (retval != 0) {
- dev_err(&adapter->ccw_device->dev,
- "Nameserver port unavailable.\n");
- retval = ZFCP_ERP_FAILED;
- break;
- }
+
+ if (!adapter->nameserver_port) {
+ dev_err(&adapter->ccw_device->dev,
+ "Nameserver port unavailable.\n");
+ retval = ZFCP_ERP_FAILED;
+ break;
}
if (!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
&adapter->nameserver_port->status)) {
extern void zfcp_port_dequeue(struct zfcp_port *);
extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, fcp_lun_t);
extern void zfcp_unit_dequeue(struct zfcp_unit *);
+extern int zfcp_scan_ports(struct zfcp_adapter *);
+extern void _zfcp_scan_ports_later(struct work_struct *work);
/******************************* S/390 IO ************************************/
extern int zfcp_ccw_register(void);
extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
extern void zfcp_test_link(struct zfcp_port *);
-extern int zfcp_nameserver_enqueue(struct zfcp_adapter *);
-
/******************************* SCSI ****************************************/
extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
#include "zfcp_ext.h"
+struct ct_iu_gpn_ft_req {
+ struct ct_hdr header;
+ u8 flags;
+ u8 domain_id_scope;
+ u8 area_id_scope;
+ u8 fc4_type;
+} __attribute__ ((packed));
+
+struct gpn_ft_resp_acc {
+ u8 control;
+ u8 port_id[3];
+ u8 reserved[4];
+ u64 wwpn;
+} __attribute__ ((packed));
+
+#define ZFCP_GPN_FT_ENTRIES ((PAGE_SIZE - sizeof(struct ct_hdr)) \
+ / sizeof(struct gpn_ft_resp_acc))
+#define ZFCP_GPN_FT_BUFFERS 4
+#define ZFCP_GPN_FT_MAX_ENTRIES ZFCP_GPN_FT_BUFFERS * (ZFCP_GPN_FT_ENTRIES + 1)
+
+struct ct_iu_gpn_ft_resp {
+ struct ct_hdr header;
+ struct gpn_ft_resp_acc accept[ZFCP_GPN_FT_ENTRIES];
+} __attribute__ ((packed));
+
+struct zfcp_gpn_ft {
+ struct zfcp_send_ct ct;
+ struct scatterlist sg_req;
+ struct scatterlist sg_resp[ZFCP_GPN_FT_BUFFERS];
+};
+
static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
struct fcp_rscn_element *elem)
{
}
_zfcp_fc_incoming_rscn(fsf_req, range_mask, fcp_rscn_element);
}
+ schedule_work(&fsf_req->adapter->scan_work);
}
static void zfcp_fc_incoming_wwpn(struct zfcp_fsf_req *req, wwn_t wwpn)
zfcp_port_put(port);
zfcp_erp_port_forced_reopen(port, 0, 65, NULL);
}
+
+static int zfcp_scan_get_nameserver(struct zfcp_adapter *adapter)
+{
+ int ret;
+
+ if (!adapter->nameserver_port)
+ return -EINTR;
+
+ if (!atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &adapter->nameserver_port->status)) {
+ ret = zfcp_erp_port_reopen(adapter->nameserver_port, 0, 148,
+ NULL);
+ if (ret)
+ return ret;
+ zfcp_erp_wait(adapter);
+ zfcp_port_put(adapter->nameserver_port);
+ }
+ return !atomic_test_mask(ZFCP_STATUS_COMMON_UNBLOCKED,
+ &adapter->nameserver_port->status);
+}
+
+static void zfcp_gpn_ft_handler(unsigned long _done)
+{
+ complete((struct completion *)_done);
+}
+
+static void zfcp_free_sg_env(struct zfcp_gpn_ft *gpn_ft)
+{
+ struct scatterlist *sg = &gpn_ft->sg_req;
+
+ kfree(sg_virt(sg)); /* free request buffer */
+ zfcp_sg_free_table(gpn_ft->sg_resp, ZFCP_GPN_FT_BUFFERS);
+
+ kfree(gpn_ft);
+}
+
+static struct zfcp_gpn_ft *zfcp_alloc_sg_env(void)
+{
+ struct zfcp_gpn_ft *gpn_ft;
+ struct ct_iu_gpn_ft_req *req;
+
+ gpn_ft = kzalloc(sizeof(*gpn_ft), GFP_KERNEL);
+ if (!gpn_ft)
+ return NULL;
+
+ req = kzalloc(sizeof(struct ct_iu_gpn_ft_req), GFP_KERNEL);
+ if (!req) {
+ kfree(gpn_ft);
+ gpn_ft = NULL;
+ goto out;
+ }
+ sg_init_one(&gpn_ft->sg_req, req, sizeof(*req));
+
+ if (zfcp_sg_setup_table(gpn_ft->sg_resp, ZFCP_GPN_FT_BUFFERS)) {
+ zfcp_free_sg_env(gpn_ft);
+ gpn_ft = NULL;
+ }
+out:
+ return gpn_ft;
+}
+
+
+static int zfcp_scan_issue_gpn_ft(struct zfcp_gpn_ft *gpn_ft,
+ struct zfcp_adapter *adapter)
+{
+ struct zfcp_send_ct *ct = &gpn_ft->ct;
+ struct ct_iu_gpn_ft_req *req = sg_virt(&gpn_ft->sg_req);
+ struct completion done;
+ int ret;
+
+ /* prepare CT IU for GPN_FT */
+ req->header.revision = ZFCP_CT_REVISION;
+ req->header.gs_type = ZFCP_CT_DIRECTORY_SERVICE;
+ req->header.gs_subtype = ZFCP_CT_NAME_SERVER;
+ req->header.options = ZFCP_CT_SYNCHRONOUS;
+ req->header.cmd_rsp_code = ZFCP_CT_GPN_FT;
+ req->header.max_res_size = (sizeof(struct gpn_ft_resp_acc) *
+ (ZFCP_GPN_FT_MAX_ENTRIES - 1)) >> 2;
+ req->flags = 0;
+ req->domain_id_scope = 0;
+ req->area_id_scope = 0;
+ req->fc4_type = ZFCP_CT_SCSI_FCP;
+
+ /* prepare zfcp_send_ct */
+ ct->port = adapter->nameserver_port;
+ ct->handler = zfcp_gpn_ft_handler;
+ ct->handler_data = (unsigned long)&done;
+ ct->timeout = 10;
+ ct->req = &gpn_ft->sg_req;
+ ct->resp = gpn_ft->sg_resp;
+ ct->req_count = 1;
+ ct->resp_count = ZFCP_GPN_FT_BUFFERS;
+
+ init_completion(&done);
+ ret = zfcp_fsf_send_ct(ct, NULL, NULL);
+ if (!ret)
+ wait_for_completion(&done);
+ return ret;
+}
+
+static void zfcp_validate_port(struct zfcp_port *port)
+{
+ struct zfcp_adapter *adapter = port->adapter;
+
+ atomic_clear_mask(ZFCP_STATUS_COMMON_NOESC, &port->status);
+
+ if (port == adapter->nameserver_port)
+ return;
+ if ((port->supported_classes != 0) || (port->units != 0)) {
+ zfcp_port_put(port);
+ return;
+ }
+ zfcp_erp_port_shutdown(port, 0, 151, NULL);
+ zfcp_erp_wait(adapter);
+ zfcp_port_put(port);
+ zfcp_port_dequeue(port);
+}
+
+static int zfcp_scan_eval_gpn_ft(struct zfcp_gpn_ft *gpn_ft)
+{
+ struct zfcp_send_ct *ct = &gpn_ft->ct;
+ struct scatterlist *sg = gpn_ft->sg_resp;
+ struct ct_hdr *hdr = sg_virt(sg);
+ struct gpn_ft_resp_acc *acc = sg_virt(sg);
+ struct zfcp_adapter *adapter = ct->port->adapter;
+ struct zfcp_port *port, *tmp;
+ u32 d_id;
+ int ret = 0, x;
+
+ if (ct->status)
+ return -EIO;
+
+ if (hdr->cmd_rsp_code != ZFCP_CT_ACCEPT) {
+ if (hdr->reason_code == ZFCP_CT_UNABLE_TO_PERFORM_CMD)
+ return -EAGAIN; /* might be a temporary condition */
+ return -EIO;
+ }
+
+ if (hdr->max_res_size)
+ return -E2BIG;
+
+ down(&zfcp_data.config_sema);
+
+ /* first entry is the header */
+ for (x = 1; x < ZFCP_GPN_FT_MAX_ENTRIES; x++) {
+ if (x % (ZFCP_GPN_FT_ENTRIES + 1))
+ acc++;
+ else
+ acc = sg_virt(++sg);
+
+ d_id = acc->port_id[0] << 16 | acc->port_id[1] << 8 |
+ acc->port_id[2];
+
+ /* skip the adapter's port and known remote ports */
+ if (acc->wwpn == fc_host_port_name(adapter->scsi_host) ||
+ zfcp_get_port_by_did(adapter, d_id))
+ continue;
+
+ port = zfcp_port_enqueue(adapter, acc->wwpn,
+ ZFCP_STATUS_PORT_DID_DID |
+ ZFCP_STATUS_COMMON_NOESC, d_id);
+ if (port)
+ zfcp_erp_port_reopen(port, 0, 149, NULL);
+ else
+ ret = -ENOMEM;
+ if (acc->control & 0x80) /* last entry */
+ break;
+ }
+
+ zfcp_erp_wait(adapter);
+ list_for_each_entry_safe(port, tmp, &adapter->port_list_head, list)
+ zfcp_validate_port(port);
+ up(&zfcp_data.config_sema);
+ return ret;
+}
+
+/**
+ * zfcp_scan_ports - scan remote ports and attach new ports
+ * @adapter: pointer to struct zfcp_adapter
+ */
+int zfcp_scan_ports(struct zfcp_adapter *adapter)
+{
+ int ret, i;
+ struct zfcp_gpn_ft *gpn_ft;
+
+ if (fc_host_port_type(adapter->scsi_host) != FC_PORTTYPE_NPORT)
+ return 0;
+
+ ret = zfcp_scan_get_nameserver(adapter);
+ if (ret)
+ return ret;
+
+ gpn_ft = zfcp_alloc_sg_env();
+ if (!gpn_ft)
+ return -ENOMEM;
+
+ for (i = 0; i < 3; i++) {
+ ret = zfcp_scan_issue_gpn_ft(gpn_ft, adapter);
+ if (!ret) {
+ ret = zfcp_scan_eval_gpn_ft(gpn_ft);
+ if (ret == -EAGAIN)
+ ssleep(1);
+ else
+ break;
+ }
+ }
+ zfcp_free_sg_env(gpn_ft);
+
+ return ret;
+}
+
+
+void _zfcp_scan_ports_later(struct work_struct *work)
+{
+ zfcp_scan_ports(container_of(work, struct zfcp_adapter, scan_work));
+}
if (status_buffer->status_subtype &
FSF_STATUS_READ_SUB_ACT_UPDATED)
zfcp_erp_adapter_access_changed(adapter, 135, fsf_req);
+ if (status_buffer->status_subtype &
+ FSF_STATUS_READ_SUB_INCOMING_ELS)
+ schedule_work(&adapter->scan_work);
break;
case FSF_STATUS_READ_CFDC_UPDATED:
static DEVICE_ATTR(port_add, S_IWUSR, NULL, zfcp_sysfs_port_add_store);
+/**
+ * zfcp_sysfs_port_rescan - trigger manual port rescan
+ * @dev: pointer to belonging device
+ * @attr: pointer to struct device_attribute
+ * @buf: pointer to input buffer
+ * @count: number of bytes in buffer
+ */
+static ssize_t zfcp_sysfs_port_rescan_store(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct zfcp_adapter *adapter;
+ int ret;
+
+ adapter = dev_get_drvdata(dev);
+ if (atomic_test_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status))
+ return -EBUSY;
+
+ ret = zfcp_scan_ports(adapter);
+
+ return ret ? ret : (ssize_t) count;
+}
+static DEVICE_ATTR(port_rescan, S_IWUSR, NULL, zfcp_sysfs_port_rescan_store);
+
/**
* zfcp_sysfs_port_remove_store - remove a port from sysfs tree
* @dev: pointer to belonging device
&dev_attr_in_recovery.attr,
&dev_attr_port_remove.attr,
&dev_attr_port_add.attr,
+ &dev_attr_port_rescan.attr,
&dev_attr_peer_wwnn.attr,
&dev_attr_peer_wwpn.attr,
&dev_attr_peer_d_id.attr,
projects / ~andy / linux / commitdiff