![Martin Peschke](/assets/img/avatar_default.png)
__scsi_remove_device (e.g. due to dev_loss_tmo) calls
zfcp_scsi_slave_destroy which in turn sends a close LUN FSF request to
the adapter. After 30 seconds without response,
zfcp_erp_timeout_handler kicks the ERP thread failing the close LUN
ERP action. zfcp_erp_wait in zfcp_erp_lun_shutdown_wait and thus
zfcp_scsi_slave_destroy returns and then scsi_device is no longer
valid. Sometime later the response to the close LUN FSF request may
finally come in. However, commit
b62a8d9b45
"[SCSI] zfcp: Use SCSI device data zfcp_scsi_dev instead of zfcp_unit"
introduced a number of attempts to unconditionally access struct
zfcp_scsi_dev through struct scsi_device causing a use-after-free.
This leads to an Oops due to kernel page fault in one of:
zfcp_fsf_abort_fcp_command_handler, zfcp_fsf_open_lun_handler,
zfcp_fsf_close_lun_handler, zfcp_fsf_req_trace,
zfcp_fsf_fcp_handler_common.
Move dereferencing of zfcp private data zfcp_scsi_dev allocated in
scsi_device via scsi_transport_reserve_device after the check for
potentially aborted FSF request and thus no longer valid scsi_device.
Only then assign sdev_to_zfcp(sdev) to the local auto variable struct
zfcp_scsi_dev *zfcp_sdev.
Signed-off-by: Martin Peschke <mpeschke@linux.vnet.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.vnet.ibm.com>
Cc: <stable@vger.kernel.org> #2.6.37+
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
2487 lines
68 KiB
C
2487 lines
68 KiB
C
/*
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* zfcp device driver
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*
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* Implementation of FSF commands.
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*
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* Copyright IBM Corp. 2002, 2010
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*/
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#define KMSG_COMPONENT "zfcp"
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#define pr_fmt(fmt) KMSG_COMPONENT ": " fmt
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#include <linux/blktrace_api.h>
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#include <linux/slab.h>
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#include <scsi/fc/fc_els.h>
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#include "zfcp_ext.h"
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#include "zfcp_fc.h"
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#include "zfcp_dbf.h"
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#include "zfcp_qdio.h"
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#include "zfcp_reqlist.h"
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struct kmem_cache *zfcp_fsf_qtcb_cache;
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static void zfcp_fsf_request_timeout_handler(unsigned long data)
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{
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struct zfcp_adapter *adapter = (struct zfcp_adapter *) data;
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zfcp_qdio_siosl(adapter);
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zfcp_erp_adapter_reopen(adapter, ZFCP_STATUS_COMMON_ERP_FAILED,
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"fsrth_1");
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}
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static void zfcp_fsf_start_timer(struct zfcp_fsf_req *fsf_req,
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unsigned long timeout)
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{
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fsf_req->timer.function = zfcp_fsf_request_timeout_handler;
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fsf_req->timer.data = (unsigned long) fsf_req->adapter;
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fsf_req->timer.expires = jiffies + timeout;
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add_timer(&fsf_req->timer);
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}
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static void zfcp_fsf_start_erp_timer(struct zfcp_fsf_req *fsf_req)
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{
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BUG_ON(!fsf_req->erp_action);
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fsf_req->timer.function = zfcp_erp_timeout_handler;
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fsf_req->timer.data = (unsigned long) fsf_req->erp_action;
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fsf_req->timer.expires = jiffies + 30 * HZ;
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add_timer(&fsf_req->timer);
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}
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/* association between FSF command and FSF QTCB type */
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static u32 fsf_qtcb_type[] = {
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[FSF_QTCB_FCP_CMND] = FSF_IO_COMMAND,
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[FSF_QTCB_ABORT_FCP_CMND] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_OPEN_PORT_WITH_DID] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_OPEN_LUN] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_CLOSE_LUN] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_CLOSE_PORT] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_CLOSE_PHYSICAL_PORT] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_SEND_ELS] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_SEND_GENERIC] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_EXCHANGE_CONFIG_DATA] = FSF_CONFIG_COMMAND,
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[FSF_QTCB_EXCHANGE_PORT_DATA] = FSF_PORT_COMMAND,
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[FSF_QTCB_DOWNLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND,
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[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
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};
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static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
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{
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dev_err(&req->adapter->ccw_device->dev, "FCP device not "
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"operational because of an unsupported FC class\n");
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zfcp_erp_adapter_shutdown(req->adapter, 0, "fscns_1");
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req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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}
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/**
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* zfcp_fsf_req_free - free memory used by fsf request
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* @fsf_req: pointer to struct zfcp_fsf_req
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*/
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void zfcp_fsf_req_free(struct zfcp_fsf_req *req)
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{
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if (likely(req->pool)) {
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if (likely(req->qtcb))
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mempool_free(req->qtcb, req->adapter->pool.qtcb_pool);
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mempool_free(req, req->pool);
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return;
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}
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if (likely(req->qtcb))
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kmem_cache_free(zfcp_fsf_qtcb_cache, req->qtcb);
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kfree(req);
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}
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static void zfcp_fsf_status_read_port_closed(struct zfcp_fsf_req *req)
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{
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unsigned long flags;
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struct fsf_status_read_buffer *sr_buf = req->data;
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struct zfcp_adapter *adapter = req->adapter;
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struct zfcp_port *port;
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int d_id = ntoh24(sr_buf->d_id);
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read_lock_irqsave(&adapter->port_list_lock, flags);
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list_for_each_entry(port, &adapter->port_list, list)
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if (port->d_id == d_id) {
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zfcp_erp_port_reopen(port, 0, "fssrpc1");
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break;
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}
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read_unlock_irqrestore(&adapter->port_list_lock, flags);
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}
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static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req,
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struct fsf_link_down_info *link_down)
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{
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struct zfcp_adapter *adapter = req->adapter;
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if (atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
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return;
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atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
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zfcp_scsi_schedule_rports_block(adapter);
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if (!link_down)
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goto out;
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switch (link_down->error_code) {
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case FSF_PSQ_LINK_NO_LIGHT:
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dev_warn(&req->adapter->ccw_device->dev,
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"There is no light signal from the local "
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"fibre channel cable\n");
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break;
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case FSF_PSQ_LINK_WRAP_PLUG:
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dev_warn(&req->adapter->ccw_device->dev,
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"There is a wrap plug instead of a fibre "
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"channel cable\n");
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break;
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case FSF_PSQ_LINK_NO_FCP:
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dev_warn(&req->adapter->ccw_device->dev,
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"The adjacent fibre channel node does not "
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"support FCP\n");
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break;
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case FSF_PSQ_LINK_FIRMWARE_UPDATE:
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dev_warn(&req->adapter->ccw_device->dev,
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"The FCP device is suspended because of a "
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"firmware update\n");
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break;
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case FSF_PSQ_LINK_INVALID_WWPN:
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dev_warn(&req->adapter->ccw_device->dev,
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"The FCP device detected a WWPN that is "
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"duplicate or not valid\n");
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break;
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case FSF_PSQ_LINK_NO_NPIV_SUPPORT:
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dev_warn(&req->adapter->ccw_device->dev,
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"The fibre channel fabric does not support NPIV\n");
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break;
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case FSF_PSQ_LINK_NO_FCP_RESOURCES:
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dev_warn(&req->adapter->ccw_device->dev,
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"The FCP adapter cannot support more NPIV ports\n");
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break;
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case FSF_PSQ_LINK_NO_FABRIC_RESOURCES:
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dev_warn(&req->adapter->ccw_device->dev,
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"The adjacent switch cannot support "
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"more NPIV ports\n");
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break;
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case FSF_PSQ_LINK_FABRIC_LOGIN_UNABLE:
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dev_warn(&req->adapter->ccw_device->dev,
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"The FCP adapter could not log in to the "
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"fibre channel fabric\n");
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break;
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case FSF_PSQ_LINK_WWPN_ASSIGNMENT_CORRUPTED:
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dev_warn(&req->adapter->ccw_device->dev,
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"The WWPN assignment file on the FCP adapter "
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"has been damaged\n");
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break;
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case FSF_PSQ_LINK_MODE_TABLE_CURRUPTED:
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dev_warn(&req->adapter->ccw_device->dev,
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"The mode table on the FCP adapter "
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"has been damaged\n");
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break;
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case FSF_PSQ_LINK_NO_WWPN_ASSIGNMENT:
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dev_warn(&req->adapter->ccw_device->dev,
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"All NPIV ports on the FCP adapter have "
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"been assigned\n");
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break;
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default:
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dev_warn(&req->adapter->ccw_device->dev,
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"The link between the FCP adapter and "
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"the FC fabric is down\n");
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}
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out:
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zfcp_erp_set_adapter_status(adapter, ZFCP_STATUS_COMMON_ERP_FAILED);
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}
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static void zfcp_fsf_status_read_link_down(struct zfcp_fsf_req *req)
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{
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struct fsf_status_read_buffer *sr_buf = req->data;
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struct fsf_link_down_info *ldi =
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(struct fsf_link_down_info *) &sr_buf->payload;
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switch (sr_buf->status_subtype) {
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case FSF_STATUS_READ_SUB_NO_PHYSICAL_LINK:
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zfcp_fsf_link_down_info_eval(req, ldi);
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break;
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case FSF_STATUS_READ_SUB_FDISC_FAILED:
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zfcp_fsf_link_down_info_eval(req, ldi);
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break;
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case FSF_STATUS_READ_SUB_FIRMWARE_UPDATE:
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zfcp_fsf_link_down_info_eval(req, NULL);
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};
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}
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static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
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{
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struct zfcp_adapter *adapter = req->adapter;
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struct fsf_status_read_buffer *sr_buf = req->data;
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if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
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zfcp_dbf_hba_fsf_uss("fssrh_1", req);
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mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
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zfcp_fsf_req_free(req);
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return;
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}
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zfcp_dbf_hba_fsf_uss("fssrh_4", req);
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switch (sr_buf->status_type) {
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case FSF_STATUS_READ_PORT_CLOSED:
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zfcp_fsf_status_read_port_closed(req);
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break;
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case FSF_STATUS_READ_INCOMING_ELS:
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zfcp_fc_incoming_els(req);
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break;
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case FSF_STATUS_READ_SENSE_DATA_AVAIL:
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break;
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case FSF_STATUS_READ_BIT_ERROR_THRESHOLD:
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dev_warn(&adapter->ccw_device->dev,
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"The error threshold for checksum statistics "
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"has been exceeded\n");
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zfcp_dbf_hba_bit_err("fssrh_3", req);
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break;
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case FSF_STATUS_READ_LINK_DOWN:
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zfcp_fsf_status_read_link_down(req);
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zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKDOWN, 0);
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break;
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case FSF_STATUS_READ_LINK_UP:
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dev_info(&adapter->ccw_device->dev,
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"The local link has been restored\n");
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/* All ports should be marked as ready to run again */
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zfcp_erp_set_adapter_status(adapter,
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ZFCP_STATUS_COMMON_RUNNING);
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zfcp_erp_adapter_reopen(adapter,
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ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
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ZFCP_STATUS_COMMON_ERP_FAILED,
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"fssrh_2");
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zfcp_fc_enqueue_event(adapter, FCH_EVT_LINKUP, 0);
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break;
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case FSF_STATUS_READ_NOTIFICATION_LOST:
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if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
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zfcp_cfdc_adapter_access_changed(adapter);
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if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
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zfcp_fc_conditional_port_scan(adapter);
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break;
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case FSF_STATUS_READ_CFDC_UPDATED:
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zfcp_cfdc_adapter_access_changed(adapter);
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break;
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case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
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adapter->adapter_features = sr_buf->payload.word[0];
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break;
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}
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mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
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zfcp_fsf_req_free(req);
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atomic_inc(&adapter->stat_miss);
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queue_work(adapter->work_queue, &adapter->stat_work);
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}
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static void zfcp_fsf_fsfstatus_qual_eval(struct zfcp_fsf_req *req)
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{
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switch (req->qtcb->header.fsf_status_qual.word[0]) {
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case FSF_SQ_FCP_RSP_AVAILABLE:
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case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
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case FSF_SQ_NO_RETRY_POSSIBLE:
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case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
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return;
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case FSF_SQ_COMMAND_ABORTED:
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break;
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case FSF_SQ_NO_RECOM:
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dev_err(&req->adapter->ccw_device->dev,
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"The FCP adapter reported a problem "
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"that cannot be recovered\n");
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zfcp_qdio_siosl(req->adapter);
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zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfsqe1");
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break;
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}
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/* all non-return stats set FSFREQ_ERROR*/
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req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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}
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static void zfcp_fsf_fsfstatus_eval(struct zfcp_fsf_req *req)
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{
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if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
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return;
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switch (req->qtcb->header.fsf_status) {
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case FSF_UNKNOWN_COMMAND:
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dev_err(&req->adapter->ccw_device->dev,
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"The FCP adapter does not recognize the command 0x%x\n",
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req->qtcb->header.fsf_command);
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zfcp_erp_adapter_shutdown(req->adapter, 0, "fsfse_1");
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req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_ADAPTER_STATUS_AVAILABLE:
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zfcp_fsf_fsfstatus_qual_eval(req);
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break;
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}
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}
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static void zfcp_fsf_protstatus_eval(struct zfcp_fsf_req *req)
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{
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struct zfcp_adapter *adapter = req->adapter;
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struct fsf_qtcb *qtcb = req->qtcb;
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union fsf_prot_status_qual *psq = &qtcb->prefix.prot_status_qual;
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zfcp_dbf_hba_fsf_response(req);
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if (req->status & ZFCP_STATUS_FSFREQ_DISMISSED) {
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req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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return;
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}
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switch (qtcb->prefix.prot_status) {
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case FSF_PROT_GOOD:
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case FSF_PROT_FSF_STATUS_PRESENTED:
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return;
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case FSF_PROT_QTCB_VERSION_ERROR:
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dev_err(&adapter->ccw_device->dev,
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"QTCB version 0x%x not supported by FCP adapter "
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"(0x%x to 0x%x)\n", FSF_QTCB_CURRENT_VERSION,
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psq->word[0], psq->word[1]);
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zfcp_erp_adapter_shutdown(adapter, 0, "fspse_1");
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break;
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case FSF_PROT_ERROR_STATE:
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case FSF_PROT_SEQ_NUMB_ERROR:
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zfcp_erp_adapter_reopen(adapter, 0, "fspse_2");
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req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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break;
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case FSF_PROT_UNSUPP_QTCB_TYPE:
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dev_err(&adapter->ccw_device->dev,
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"The QTCB type is not supported by the FCP adapter\n");
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zfcp_erp_adapter_shutdown(adapter, 0, "fspse_3");
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break;
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case FSF_PROT_HOST_CONNECTION_INITIALIZING:
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atomic_set_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
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&adapter->status);
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break;
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case FSF_PROT_DUPLICATE_REQUEST_ID:
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dev_err(&adapter->ccw_device->dev,
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"0x%Lx is an ambiguous request identifier\n",
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(unsigned long long)qtcb->bottom.support.req_handle);
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zfcp_erp_adapter_shutdown(adapter, 0, "fspse_4");
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break;
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case FSF_PROT_LINK_DOWN:
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zfcp_fsf_link_down_info_eval(req, &psq->link_down_info);
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/* go through reopen to flush pending requests */
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zfcp_erp_adapter_reopen(adapter, 0, "fspse_6");
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break;
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case FSF_PROT_REEST_QUEUE:
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/* All ports should be marked as ready to run again */
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zfcp_erp_set_adapter_status(adapter,
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ZFCP_STATUS_COMMON_RUNNING);
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zfcp_erp_adapter_reopen(adapter,
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ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED |
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ZFCP_STATUS_COMMON_ERP_FAILED,
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"fspse_8");
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break;
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default:
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dev_err(&adapter->ccw_device->dev,
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"0x%x is not a valid transfer protocol status\n",
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qtcb->prefix.prot_status);
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zfcp_qdio_siosl(adapter);
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zfcp_erp_adapter_shutdown(adapter, 0, "fspse_9");
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}
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req->status |= ZFCP_STATUS_FSFREQ_ERROR;
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}
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/**
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* zfcp_fsf_req_complete - process completion of a FSF request
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* @fsf_req: The FSF request that has been completed.
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*
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* When a request has been completed either from the FCP adapter,
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* or it has been dismissed due to a queue shutdown, this function
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* is called to process the completion status and trigger further
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* events related to the FSF request.
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*/
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static void zfcp_fsf_req_complete(struct zfcp_fsf_req *req)
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{
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if (unlikely(req->fsf_command == FSF_QTCB_UNSOLICITED_STATUS)) {
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zfcp_fsf_status_read_handler(req);
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return;
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}
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|
|
del_timer(&req->timer);
|
|
zfcp_fsf_protstatus_eval(req);
|
|
zfcp_fsf_fsfstatus_eval(req);
|
|
req->handler(req);
|
|
|
|
if (req->erp_action)
|
|
zfcp_erp_notify(req->erp_action, 0);
|
|
|
|
if (likely(req->status & ZFCP_STATUS_FSFREQ_CLEANUP))
|
|
zfcp_fsf_req_free(req);
|
|
else
|
|
complete(&req->completion);
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_req_dismiss_all - dismiss all fsf requests
|
|
* @adapter: pointer to struct zfcp_adapter
|
|
*
|
|
* Never ever call this without shutting down the adapter first.
|
|
* Otherwise the adapter would continue using and corrupting s390 storage.
|
|
* Included BUG_ON() call to ensure this is done.
|
|
* ERP is supposed to be the only user of this function.
|
|
*/
|
|
void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *adapter)
|
|
{
|
|
struct zfcp_fsf_req *req, *tmp;
|
|
LIST_HEAD(remove_queue);
|
|
|
|
BUG_ON(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_QDIOUP);
|
|
zfcp_reqlist_move(adapter->req_list, &remove_queue);
|
|
|
|
list_for_each_entry_safe(req, tmp, &remove_queue, list) {
|
|
list_del(&req->list);
|
|
req->status |= ZFCP_STATUS_FSFREQ_DISMISSED;
|
|
zfcp_fsf_req_complete(req);
|
|
}
|
|
}
|
|
|
|
#define ZFCP_FSF_PORTSPEED_1GBIT (1 << 0)
|
|
#define ZFCP_FSF_PORTSPEED_2GBIT (1 << 1)
|
|
#define ZFCP_FSF_PORTSPEED_4GBIT (1 << 2)
|
|
#define ZFCP_FSF_PORTSPEED_10GBIT (1 << 3)
|
|
#define ZFCP_FSF_PORTSPEED_8GBIT (1 << 4)
|
|
#define ZFCP_FSF_PORTSPEED_16GBIT (1 << 5)
|
|
#define ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED (1 << 15)
|
|
|
|
static u32 zfcp_fsf_convert_portspeed(u32 fsf_speed)
|
|
{
|
|
u32 fdmi_speed = 0;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_1GBIT)
|
|
fdmi_speed |= FC_PORTSPEED_1GBIT;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_2GBIT)
|
|
fdmi_speed |= FC_PORTSPEED_2GBIT;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_4GBIT)
|
|
fdmi_speed |= FC_PORTSPEED_4GBIT;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_10GBIT)
|
|
fdmi_speed |= FC_PORTSPEED_10GBIT;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_8GBIT)
|
|
fdmi_speed |= FC_PORTSPEED_8GBIT;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_16GBIT)
|
|
fdmi_speed |= FC_PORTSPEED_16GBIT;
|
|
if (fsf_speed & ZFCP_FSF_PORTSPEED_NOT_NEGOTIATED)
|
|
fdmi_speed |= FC_PORTSPEED_NOT_NEGOTIATED;
|
|
return fdmi_speed;
|
|
}
|
|
|
|
static int zfcp_fsf_exchange_config_evaluate(struct zfcp_fsf_req *req)
|
|
{
|
|
struct fsf_qtcb_bottom_config *bottom = &req->qtcb->bottom.config;
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct Scsi_Host *shost = adapter->scsi_host;
|
|
struct fc_els_flogi *nsp, *plogi;
|
|
|
|
/* adjust pointers for missing command code */
|
|
nsp = (struct fc_els_flogi *) ((u8 *)&bottom->nport_serv_param
|
|
- sizeof(u32));
|
|
plogi = (struct fc_els_flogi *) ((u8 *)&bottom->plogi_payload
|
|
- sizeof(u32));
|
|
|
|
if (req->data)
|
|
memcpy(req->data, bottom, sizeof(*bottom));
|
|
|
|
fc_host_port_name(shost) = nsp->fl_wwpn;
|
|
fc_host_node_name(shost) = nsp->fl_wwnn;
|
|
fc_host_port_id(shost) = ntoh24(bottom->s_id);
|
|
fc_host_speed(shost) =
|
|
zfcp_fsf_convert_portspeed(bottom->fc_link_speed);
|
|
fc_host_supported_classes(shost) = FC_COS_CLASS2 | FC_COS_CLASS3;
|
|
|
|
adapter->hydra_version = bottom->adapter_type;
|
|
adapter->timer_ticks = bottom->timer_interval & ZFCP_FSF_TIMER_INT_MASK;
|
|
adapter->stat_read_buf_num = max(bottom->status_read_buf_num,
|
|
(u16)FSF_STATUS_READS_RECOM);
|
|
|
|
if (fc_host_permanent_port_name(shost) == -1)
|
|
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
|
|
|
|
switch (bottom->fc_topology) {
|
|
case FSF_TOPO_P2P:
|
|
adapter->peer_d_id = ntoh24(bottom->peer_d_id);
|
|
adapter->peer_wwpn = plogi->fl_wwpn;
|
|
adapter->peer_wwnn = plogi->fl_wwnn;
|
|
fc_host_port_type(shost) = FC_PORTTYPE_PTP;
|
|
break;
|
|
case FSF_TOPO_FABRIC:
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
|
|
break;
|
|
case FSF_TOPO_AL:
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NLPORT;
|
|
/* fall through */
|
|
default:
|
|
dev_err(&adapter->ccw_device->dev,
|
|
"Unknown or unsupported arbitrated loop "
|
|
"fibre channel topology detected\n");
|
|
zfcp_erp_adapter_shutdown(adapter, 0, "fsece_1");
|
|
return -EIO;
|
|
}
|
|
|
|
zfcp_scsi_set_prot(adapter);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void zfcp_fsf_exchange_config_data_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct fsf_qtcb *qtcb = req->qtcb;
|
|
struct fsf_qtcb_bottom_config *bottom = &qtcb->bottom.config;
|
|
struct Scsi_Host *shost = adapter->scsi_host;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
adapter->fsf_lic_version = bottom->lic_version;
|
|
adapter->adapter_features = bottom->adapter_features;
|
|
adapter->connection_features = bottom->connection_features;
|
|
adapter->peer_wwpn = 0;
|
|
adapter->peer_wwnn = 0;
|
|
adapter->peer_d_id = 0;
|
|
|
|
switch (qtcb->header.fsf_status) {
|
|
case FSF_GOOD:
|
|
if (zfcp_fsf_exchange_config_evaluate(req))
|
|
return;
|
|
|
|
if (bottom->max_qtcb_size < sizeof(struct fsf_qtcb)) {
|
|
dev_err(&adapter->ccw_device->dev,
|
|
"FCP adapter maximum QTCB size (%d bytes) "
|
|
"is too small\n",
|
|
bottom->max_qtcb_size);
|
|
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh1");
|
|
return;
|
|
}
|
|
atomic_set_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK,
|
|
&adapter->status);
|
|
break;
|
|
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
|
|
fc_host_node_name(shost) = 0;
|
|
fc_host_port_name(shost) = 0;
|
|
fc_host_port_id(shost) = 0;
|
|
fc_host_speed(shost) = FC_PORTSPEED_UNKNOWN;
|
|
fc_host_port_type(shost) = FC_PORTTYPE_UNKNOWN;
|
|
adapter->hydra_version = 0;
|
|
|
|
zfcp_fsf_link_down_info_eval(req,
|
|
&qtcb->header.fsf_status_qual.link_down_info);
|
|
break;
|
|
default:
|
|
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh3");
|
|
return;
|
|
}
|
|
|
|
if (adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT) {
|
|
adapter->hardware_version = bottom->hardware_version;
|
|
memcpy(fc_host_serial_number(shost), bottom->serial_number,
|
|
min(FC_SERIAL_NUMBER_SIZE, 17));
|
|
EBCASC(fc_host_serial_number(shost),
|
|
min(FC_SERIAL_NUMBER_SIZE, 17));
|
|
}
|
|
|
|
if (FSF_QTCB_CURRENT_VERSION < bottom->low_qtcb_version) {
|
|
dev_err(&adapter->ccw_device->dev,
|
|
"The FCP adapter only supports newer "
|
|
"control block versions\n");
|
|
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh4");
|
|
return;
|
|
}
|
|
if (FSF_QTCB_CURRENT_VERSION > bottom->high_qtcb_version) {
|
|
dev_err(&adapter->ccw_device->dev,
|
|
"The FCP adapter only supports older "
|
|
"control block versions\n");
|
|
zfcp_erp_adapter_shutdown(adapter, 0, "fsecdh5");
|
|
}
|
|
}
|
|
|
|
static void zfcp_fsf_exchange_port_evaluate(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct fsf_qtcb_bottom_port *bottom = &req->qtcb->bottom.port;
|
|
struct Scsi_Host *shost = adapter->scsi_host;
|
|
|
|
if (req->data)
|
|
memcpy(req->data, bottom, sizeof(*bottom));
|
|
|
|
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE) {
|
|
fc_host_permanent_port_name(shost) = bottom->wwpn;
|
|
fc_host_port_type(shost) = FC_PORTTYPE_NPIV;
|
|
} else
|
|
fc_host_permanent_port_name(shost) = fc_host_port_name(shost);
|
|
fc_host_maxframe_size(shost) = bottom->maximum_frame_size;
|
|
fc_host_supported_speeds(shost) =
|
|
zfcp_fsf_convert_portspeed(bottom->supported_speed);
|
|
memcpy(fc_host_supported_fc4s(shost), bottom->supported_fc4_types,
|
|
FC_FC4_LIST_SIZE);
|
|
memcpy(fc_host_active_fc4s(shost), bottom->active_fc4_types,
|
|
FC_FC4_LIST_SIZE);
|
|
}
|
|
|
|
static void zfcp_fsf_exchange_port_data_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct fsf_qtcb *qtcb = req->qtcb;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
switch (qtcb->header.fsf_status) {
|
|
case FSF_GOOD:
|
|
zfcp_fsf_exchange_port_evaluate(req);
|
|
break;
|
|
case FSF_EXCHANGE_CONFIG_DATA_INCOMPLETE:
|
|
zfcp_fsf_exchange_port_evaluate(req);
|
|
zfcp_fsf_link_down_info_eval(req,
|
|
&qtcb->header.fsf_status_qual.link_down_info);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static struct zfcp_fsf_req *zfcp_fsf_alloc(mempool_t *pool)
|
|
{
|
|
struct zfcp_fsf_req *req;
|
|
|
|
if (likely(pool))
|
|
req = mempool_alloc(pool, GFP_ATOMIC);
|
|
else
|
|
req = kmalloc(sizeof(*req), GFP_ATOMIC);
|
|
|
|
if (unlikely(!req))
|
|
return NULL;
|
|
|
|
memset(req, 0, sizeof(*req));
|
|
req->pool = pool;
|
|
return req;
|
|
}
|
|
|
|
static struct fsf_qtcb *zfcp_qtcb_alloc(mempool_t *pool)
|
|
{
|
|
struct fsf_qtcb *qtcb;
|
|
|
|
if (likely(pool))
|
|
qtcb = mempool_alloc(pool, GFP_ATOMIC);
|
|
else
|
|
qtcb = kmem_cache_alloc(zfcp_fsf_qtcb_cache, GFP_ATOMIC);
|
|
|
|
if (unlikely(!qtcb))
|
|
return NULL;
|
|
|
|
memset(qtcb, 0, sizeof(*qtcb));
|
|
return qtcb;
|
|
}
|
|
|
|
static struct zfcp_fsf_req *zfcp_fsf_req_create(struct zfcp_qdio *qdio,
|
|
u32 fsf_cmd, u8 sbtype,
|
|
mempool_t *pool)
|
|
{
|
|
struct zfcp_adapter *adapter = qdio->adapter;
|
|
struct zfcp_fsf_req *req = zfcp_fsf_alloc(pool);
|
|
|
|
if (unlikely(!req))
|
|
return ERR_PTR(-ENOMEM);
|
|
|
|
if (adapter->req_no == 0)
|
|
adapter->req_no++;
|
|
|
|
INIT_LIST_HEAD(&req->list);
|
|
init_timer(&req->timer);
|
|
init_completion(&req->completion);
|
|
|
|
req->adapter = adapter;
|
|
req->fsf_command = fsf_cmd;
|
|
req->req_id = adapter->req_no;
|
|
|
|
if (likely(fsf_cmd != FSF_QTCB_UNSOLICITED_STATUS)) {
|
|
if (likely(pool))
|
|
req->qtcb = zfcp_qtcb_alloc(adapter->pool.qtcb_pool);
|
|
else
|
|
req->qtcb = zfcp_qtcb_alloc(NULL);
|
|
|
|
if (unlikely(!req->qtcb)) {
|
|
zfcp_fsf_req_free(req);
|
|
return ERR_PTR(-ENOMEM);
|
|
}
|
|
|
|
req->seq_no = adapter->fsf_req_seq_no;
|
|
req->qtcb->prefix.req_seq_no = adapter->fsf_req_seq_no;
|
|
req->qtcb->prefix.req_id = req->req_id;
|
|
req->qtcb->prefix.ulp_info = 26;
|
|
req->qtcb->prefix.qtcb_type = fsf_qtcb_type[req->fsf_command];
|
|
req->qtcb->prefix.qtcb_version = FSF_QTCB_CURRENT_VERSION;
|
|
req->qtcb->header.req_handle = req->req_id;
|
|
req->qtcb->header.fsf_command = req->fsf_command;
|
|
}
|
|
|
|
zfcp_qdio_req_init(adapter->qdio, &req->qdio_req, req->req_id, sbtype,
|
|
req->qtcb, sizeof(struct fsf_qtcb));
|
|
|
|
return req;
|
|
}
|
|
|
|
static int zfcp_fsf_req_send(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct zfcp_qdio *qdio = adapter->qdio;
|
|
int with_qtcb = (req->qtcb != NULL);
|
|
int req_id = req->req_id;
|
|
|
|
zfcp_reqlist_add(adapter->req_list, req);
|
|
|
|
req->qdio_req.qdio_outb_usage = atomic_read(&qdio->req_q_free);
|
|
req->issued = get_clock();
|
|
if (zfcp_qdio_send(qdio, &req->qdio_req)) {
|
|
del_timer(&req->timer);
|
|
/* lookup request again, list might have changed */
|
|
zfcp_reqlist_find_rm(adapter->req_list, req_id);
|
|
zfcp_erp_adapter_reopen(adapter, 0, "fsrs__1");
|
|
return -EIO;
|
|
}
|
|
|
|
/* Don't increase for unsolicited status */
|
|
if (with_qtcb)
|
|
adapter->fsf_req_seq_no++;
|
|
adapter->req_no++;
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_status_read - send status read request
|
|
* @adapter: pointer to struct zfcp_adapter
|
|
* @req_flags: request flags
|
|
* Returns: 0 on success, ERROR otherwise
|
|
*/
|
|
int zfcp_fsf_status_read(struct zfcp_qdio *qdio)
|
|
{
|
|
struct zfcp_adapter *adapter = qdio->adapter;
|
|
struct zfcp_fsf_req *req;
|
|
struct fsf_status_read_buffer *sr_buf;
|
|
struct page *page;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_UNSOLICITED_STATUS, 0,
|
|
adapter->pool.status_read_req);
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
page = mempool_alloc(adapter->pool.sr_data, GFP_ATOMIC);
|
|
if (!page) {
|
|
retval = -ENOMEM;
|
|
goto failed_buf;
|
|
}
|
|
sr_buf = page_address(page);
|
|
memset(sr_buf, 0, sizeof(*sr_buf));
|
|
req->data = sr_buf;
|
|
|
|
zfcp_qdio_fill_next(qdio, &req->qdio_req, sr_buf, sizeof(*sr_buf));
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval)
|
|
goto failed_req_send;
|
|
|
|
goto out;
|
|
|
|
failed_req_send:
|
|
req->data = NULL;
|
|
mempool_free(virt_to_page(sr_buf), adapter->pool.sr_data);
|
|
failed_buf:
|
|
zfcp_dbf_hba_fsf_uss("fssr__1", req);
|
|
zfcp_fsf_req_free(req);
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_abort_fcp_command_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct scsi_device *sdev = req->data;
|
|
struct zfcp_scsi_dev *zfcp_sdev;
|
|
union fsf_status_qual *fsq = &req->qtcb->header.fsf_status_qual;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
zfcp_sdev = sdev_to_zfcp(sdev);
|
|
|
|
switch (req->qtcb->header.fsf_status) {
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
if (fsq->word[0] == fsq->word[1]) {
|
|
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0,
|
|
"fsafch1");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
}
|
|
break;
|
|
case FSF_LUN_HANDLE_NOT_VALID:
|
|
if (fsq->word[0] == fsq->word[1]) {
|
|
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fsafch2");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
}
|
|
break;
|
|
case FSF_FCP_COMMAND_DOES_NOT_EXIST:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED;
|
|
break;
|
|
case FSF_PORT_BOXED:
|
|
zfcp_erp_set_port_status(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_port_reopen(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ERP_FAILED, "fsafch3");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_LUN_BOXED:
|
|
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
|
|
"fsafch4");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (fsq->word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
zfcp_fc_test_link(zfcp_sdev->port);
|
|
/* fall through */
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
case FSF_GOOD:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED;
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_abort_fcp_cmnd - abort running SCSI command
|
|
* @scmnd: The SCSI command to abort
|
|
* Returns: pointer to struct zfcp_fsf_req
|
|
*/
|
|
|
|
struct zfcp_fsf_req *zfcp_fsf_abort_fcp_cmnd(struct scsi_cmnd *scmnd)
|
|
{
|
|
struct zfcp_fsf_req *req = NULL;
|
|
struct scsi_device *sdev = scmnd->device;
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
|
|
struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
|
|
unsigned long old_req_id = (unsigned long) scmnd->host_scribble;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_ABORT_FCP_CMND,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.scsi_abort);
|
|
if (IS_ERR(req)) {
|
|
req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
|
|
ZFCP_STATUS_COMMON_UNBLOCKED)))
|
|
goto out_error_free;
|
|
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->data = sdev;
|
|
req->handler = zfcp_fsf_abort_fcp_command_handler;
|
|
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
|
|
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
|
|
req->qtcb->bottom.support.req_handle = (u64) old_req_id;
|
|
|
|
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
|
|
if (!zfcp_fsf_req_send(req))
|
|
goto out;
|
|
|
|
out_error_free:
|
|
zfcp_fsf_req_free(req);
|
|
req = NULL;
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return req;
|
|
}
|
|
|
|
static void zfcp_fsf_send_ct_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct zfcp_fsf_ct_els *ct = req->data;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
|
|
ct->status = -EINVAL;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
goto skip_fsfstatus;
|
|
|
|
switch (header->fsf_status) {
|
|
case FSF_GOOD:
|
|
zfcp_dbf_san_res("fsscth2", req);
|
|
ct->status = 0;
|
|
break;
|
|
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
|
|
zfcp_fsf_class_not_supp(req);
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]){
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
case FSF_ACCESS_DENIED:
|
|
break;
|
|
case FSF_PORT_BOXED:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
zfcp_erp_adapter_reopen(adapter, 0, "fsscth1");
|
|
/* fall through */
|
|
case FSF_GENERIC_COMMAND_REJECTED:
|
|
case FSF_PAYLOAD_SIZE_MISMATCH:
|
|
case FSF_REQUEST_SIZE_TOO_LARGE:
|
|
case FSF_RESPONSE_SIZE_TOO_LARGE:
|
|
case FSF_SBAL_MISMATCH:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
|
|
skip_fsfstatus:
|
|
if (ct->handler)
|
|
ct->handler(ct->handler_data);
|
|
}
|
|
|
|
static void zfcp_fsf_setup_ct_els_unchained(struct zfcp_qdio *qdio,
|
|
struct zfcp_qdio_req *q_req,
|
|
struct scatterlist *sg_req,
|
|
struct scatterlist *sg_resp)
|
|
{
|
|
zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_req), sg_req->length);
|
|
zfcp_qdio_fill_next(qdio, q_req, sg_virt(sg_resp), sg_resp->length);
|
|
zfcp_qdio_set_sbale_last(qdio, q_req);
|
|
}
|
|
|
|
static int zfcp_fsf_setup_ct_els_sbals(struct zfcp_fsf_req *req,
|
|
struct scatterlist *sg_req,
|
|
struct scatterlist *sg_resp)
|
|
{
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct zfcp_qdio *qdio = adapter->qdio;
|
|
struct fsf_qtcb *qtcb = req->qtcb;
|
|
u32 feat = adapter->adapter_features;
|
|
|
|
if (zfcp_adapter_multi_buffer_active(adapter)) {
|
|
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
|
|
return -EIO;
|
|
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
|
|
return -EIO;
|
|
|
|
zfcp_qdio_set_data_div(qdio, &req->qdio_req,
|
|
zfcp_qdio_sbale_count(sg_req));
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
zfcp_qdio_set_scount(qdio, &req->qdio_req);
|
|
return 0;
|
|
}
|
|
|
|
/* use single, unchained SBAL if it can hold the request */
|
|
if (zfcp_qdio_sg_one_sbale(sg_req) && zfcp_qdio_sg_one_sbale(sg_resp)) {
|
|
zfcp_fsf_setup_ct_els_unchained(qdio, &req->qdio_req,
|
|
sg_req, sg_resp);
|
|
return 0;
|
|
}
|
|
|
|
if (!(feat & FSF_FEATURE_ELS_CT_CHAINED_SBALS))
|
|
return -EOPNOTSUPP;
|
|
|
|
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_req))
|
|
return -EIO;
|
|
|
|
qtcb->bottom.support.req_buf_length = zfcp_qdio_real_bytes(sg_req);
|
|
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
zfcp_qdio_skip_to_last_sbale(qdio, &req->qdio_req);
|
|
|
|
if (zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, sg_resp))
|
|
return -EIO;
|
|
|
|
qtcb->bottom.support.resp_buf_length = zfcp_qdio_real_bytes(sg_resp);
|
|
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int zfcp_fsf_setup_ct_els(struct zfcp_fsf_req *req,
|
|
struct scatterlist *sg_req,
|
|
struct scatterlist *sg_resp,
|
|
unsigned int timeout)
|
|
{
|
|
int ret;
|
|
|
|
ret = zfcp_fsf_setup_ct_els_sbals(req, sg_req, sg_resp);
|
|
if (ret)
|
|
return ret;
|
|
|
|
/* common settings for ct/gs and els requests */
|
|
if (timeout > 255)
|
|
timeout = 255; /* max value accepted by hardware */
|
|
req->qtcb->bottom.support.service_class = FSF_CLASS_3;
|
|
req->qtcb->bottom.support.timeout = timeout;
|
|
zfcp_fsf_start_timer(req, (timeout + 10) * HZ);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_ct - initiate a Generic Service request (FC-GS)
|
|
* @ct: pointer to struct zfcp_send_ct with data for request
|
|
* @pool: if non-null this mempool is used to allocate struct zfcp_fsf_req
|
|
*/
|
|
int zfcp_fsf_send_ct(struct zfcp_fc_wka_port *wka_port,
|
|
struct zfcp_fsf_ct_els *ct, mempool_t *pool,
|
|
unsigned int timeout)
|
|
{
|
|
struct zfcp_qdio *qdio = wka_port->adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int ret = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_GENERIC,
|
|
SBAL_SFLAGS0_TYPE_WRITE_READ, pool);
|
|
|
|
if (IS_ERR(req)) {
|
|
ret = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
ret = zfcp_fsf_setup_ct_els(req, ct->req, ct->resp, timeout);
|
|
if (ret)
|
|
goto failed_send;
|
|
|
|
req->handler = zfcp_fsf_send_ct_handler;
|
|
req->qtcb->header.port_handle = wka_port->handle;
|
|
req->data = ct;
|
|
|
|
zfcp_dbf_san_req("fssct_1", req, wka_port->d_id);
|
|
|
|
ret = zfcp_fsf_req_send(req);
|
|
if (ret)
|
|
goto failed_send;
|
|
|
|
goto out;
|
|
|
|
failed_send:
|
|
zfcp_fsf_req_free(req);
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return ret;
|
|
}
|
|
|
|
static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_fsf_ct_els *send_els = req->data;
|
|
struct zfcp_port *port = send_els->port;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
|
|
send_els->status = -EINVAL;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
goto skip_fsfstatus;
|
|
|
|
switch (header->fsf_status) {
|
|
case FSF_GOOD:
|
|
zfcp_dbf_san_res("fsselh1", req);
|
|
send_els->status = 0;
|
|
break;
|
|
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
|
|
zfcp_fsf_class_not_supp(req);
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]){
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
case FSF_SQ_RETRY_IF_POSSIBLE:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
case FSF_ELS_COMMAND_REJECTED:
|
|
case FSF_PAYLOAD_SIZE_MISMATCH:
|
|
case FSF_REQUEST_SIZE_TOO_LARGE:
|
|
case FSF_RESPONSE_SIZE_TOO_LARGE:
|
|
break;
|
|
case FSF_ACCESS_DENIED:
|
|
if (port) {
|
|
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
}
|
|
break;
|
|
case FSF_SBAL_MISMATCH:
|
|
/* should never occur, avoided in zfcp_fsf_send_els */
|
|
/* fall through */
|
|
default:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
skip_fsfstatus:
|
|
if (send_els->handler)
|
|
send_els->handler(send_els->handler_data);
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_send_els - initiate an ELS command (FC-FS)
|
|
* @els: pointer to struct zfcp_send_els with data for the command
|
|
*/
|
|
int zfcp_fsf_send_els(struct zfcp_adapter *adapter, u32 d_id,
|
|
struct zfcp_fsf_ct_els *els, unsigned int timeout)
|
|
{
|
|
struct zfcp_fsf_req *req;
|
|
struct zfcp_qdio *qdio = adapter->qdio;
|
|
int ret = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_SEND_ELS,
|
|
SBAL_SFLAGS0_TYPE_WRITE_READ, NULL);
|
|
|
|
if (IS_ERR(req)) {
|
|
ret = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
|
|
if (!zfcp_adapter_multi_buffer_active(adapter))
|
|
zfcp_qdio_sbal_limit(qdio, &req->qdio_req, 2);
|
|
|
|
ret = zfcp_fsf_setup_ct_els(req, els->req, els->resp, timeout);
|
|
|
|
if (ret)
|
|
goto failed_send;
|
|
|
|
hton24(req->qtcb->bottom.support.d_id, d_id);
|
|
req->handler = zfcp_fsf_send_els_handler;
|
|
req->data = els;
|
|
|
|
zfcp_dbf_san_req("fssels1", req, d_id);
|
|
|
|
ret = zfcp_fsf_req_send(req);
|
|
if (ret)
|
|
goto failed_send;
|
|
|
|
goto out;
|
|
|
|
failed_send:
|
|
zfcp_fsf_req_free(req);
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return ret;
|
|
}
|
|
|
|
int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_fsf_req *req;
|
|
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->qtcb->bottom.config.feature_selection =
|
|
FSF_FEATURE_CFDC |
|
|
FSF_FEATURE_LUN_SHARING |
|
|
FSF_FEATURE_NOTIFICATION_LOST |
|
|
FSF_FEATURE_UPDATE_ALERT;
|
|
req->erp_action = erp_action;
|
|
req->handler = zfcp_fsf_exchange_config_data_handler;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *qdio,
|
|
struct fsf_qtcb_bottom_config *data)
|
|
{
|
|
struct zfcp_fsf_req *req = NULL;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out_unlock;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_CONFIG_DATA,
|
|
SBAL_SFLAGS0_TYPE_READ, NULL);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out_unlock;
|
|
}
|
|
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
req->handler = zfcp_fsf_exchange_config_data_handler;
|
|
|
|
req->qtcb->bottom.config.feature_selection =
|
|
FSF_FEATURE_CFDC |
|
|
FSF_FEATURE_LUN_SHARING |
|
|
FSF_FEATURE_NOTIFICATION_LOST |
|
|
FSF_FEATURE_UPDATE_ALERT;
|
|
|
|
if (data)
|
|
req->data = data;
|
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(req);
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
if (!retval)
|
|
wait_for_completion(&req->completion);
|
|
|
|
zfcp_fsf_req_free(req);
|
|
return retval;
|
|
|
|
out_unlock:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_port_data - request information about local port
|
|
* @erp_action: ERP action for the adapter for which port data is requested
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
|
|
return -EOPNOTSUPP;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->handler = zfcp_fsf_exchange_port_data_handler;
|
|
req->erp_action = erp_action;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_exchange_port_data_sync - request information about local port
|
|
* @qdio: pointer to struct zfcp_qdio
|
|
* @data: pointer to struct fsf_qtcb_bottom_port
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *qdio,
|
|
struct fsf_qtcb_bottom_port *data)
|
|
{
|
|
struct zfcp_fsf_req *req = NULL;
|
|
int retval = -EIO;
|
|
|
|
if (!(qdio->adapter->adapter_features & FSF_FEATURE_HBAAPI_MANAGEMENT))
|
|
return -EOPNOTSUPP;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out_unlock;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_EXCHANGE_PORT_DATA,
|
|
SBAL_SFLAGS0_TYPE_READ, NULL);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out_unlock;
|
|
}
|
|
|
|
if (data)
|
|
req->data = data;
|
|
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->handler = zfcp_fsf_exchange_port_data_handler;
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(req);
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
|
|
if (!retval)
|
|
wait_for_completion(&req->completion);
|
|
|
|
zfcp_fsf_req_free(req);
|
|
|
|
return retval;
|
|
|
|
out_unlock:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_port *port = req->data;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
struct fc_els_flogi *plogi;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
goto out;
|
|
|
|
switch (header->fsf_status) {
|
|
case FSF_PORT_ALREADY_OPEN:
|
|
break;
|
|
case FSF_ACCESS_DENIED:
|
|
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
|
|
dev_warn(&req->adapter->ccw_device->dev,
|
|
"Not enough FCP adapter resources to open "
|
|
"remote port 0x%016Lx\n",
|
|
(unsigned long long)port->wwpn);
|
|
zfcp_erp_set_port_status(port,
|
|
ZFCP_STATUS_COMMON_ERP_FAILED);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
case FSF_SQ_NO_RETRY_POSSIBLE:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
case FSF_GOOD:
|
|
port->handle = header->port_handle;
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN |
|
|
ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED,
|
|
&port->status);
|
|
/* check whether D_ID has changed during open */
|
|
/*
|
|
* FIXME: This check is not airtight, as the FCP channel does
|
|
* not monitor closures of target port connections caused on
|
|
* the remote side. Thus, they might miss out on invalidating
|
|
* locally cached WWPNs (and other N_Port parameters) of gone
|
|
* target ports. So, our heroic attempt to make things safe
|
|
* could be undermined by 'open port' response data tagged with
|
|
* obsolete WWPNs. Another reason to monitor potential
|
|
* connection closures ourself at least (by interpreting
|
|
* incoming ELS' and unsolicited status). It just crosses my
|
|
* mind that one should be able to cross-check by means of
|
|
* another GID_PN straight after a port has been opened.
|
|
* Alternately, an ADISC/PDISC ELS should suffice, as well.
|
|
*/
|
|
plogi = (struct fc_els_flogi *) req->qtcb->bottom.support.els;
|
|
if (req->qtcb->bottom.support.els1_length >=
|
|
FSF_PLOGI_MIN_LEN)
|
|
zfcp_fc_plogi_evaluate(port, plogi);
|
|
break;
|
|
case FSF_UNKNOWN_OP_SUBTYPE:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
|
|
out:
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_open_port - create and send open port request
|
|
* @erp_action: pointer to struct zfcp_erp_action
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_open_port(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
|
|
struct zfcp_port *port = erp_action->port;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->handler = zfcp_fsf_open_port_handler;
|
|
hton24(req->qtcb->bottom.support.d_id, port->d_id);
|
|
req->data = port;
|
|
req->erp_action = erp_action;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
get_device(&port->dev);
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
put_device(&port->dev);
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_close_port_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_port *port = req->data;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
switch (req->qtcb->header.fsf_status) {
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
zfcp_erp_adapter_reopen(port->adapter, 0, "fscph_1");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
break;
|
|
case FSF_GOOD:
|
|
zfcp_erp_clear_port_status(port, ZFCP_STATUS_COMMON_OPEN);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_close_port - create and send close port request
|
|
* @erp_action: pointer to struct zfcp_erp_action
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_close_port(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->handler = zfcp_fsf_close_port_handler;
|
|
req->data = erp_action->port;
|
|
req->erp_action = erp_action;
|
|
req->qtcb->header.port_handle = erp_action->port->handle;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_open_wka_port_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_fc_wka_port *wka_port = req->data;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR) {
|
|
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
|
|
goto out;
|
|
}
|
|
|
|
switch (header->fsf_status) {
|
|
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
|
|
dev_warn(&req->adapter->ccw_device->dev,
|
|
"Opening WKA port 0x%x failed\n", wka_port->d_id);
|
|
/* fall through */
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
/* fall through */
|
|
case FSF_ACCESS_DENIED:
|
|
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
|
|
break;
|
|
case FSF_GOOD:
|
|
wka_port->handle = header->port_handle;
|
|
/* fall through */
|
|
case FSF_PORT_ALREADY_OPEN:
|
|
wka_port->status = ZFCP_FC_WKA_PORT_ONLINE;
|
|
}
|
|
out:
|
|
wake_up(&wka_port->completion_wq);
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_open_wka_port - create and send open wka-port request
|
|
* @wka_port: pointer to struct zfcp_fc_wka_port
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_open_wka_port(struct zfcp_fc_wka_port *wka_port)
|
|
{
|
|
struct zfcp_qdio *qdio = wka_port->adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_PORT_WITH_DID,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->handler = zfcp_fsf_open_wka_port_handler;
|
|
hton24(req->qtcb->bottom.support.d_id, wka_port->d_id);
|
|
req->data = wka_port;
|
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval)
|
|
zfcp_fsf_req_free(req);
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_close_wka_port_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_fc_wka_port *wka_port = req->data;
|
|
|
|
if (req->qtcb->header.fsf_status == FSF_PORT_HANDLE_NOT_VALID) {
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
zfcp_erp_adapter_reopen(wka_port->adapter, 0, "fscwph1");
|
|
}
|
|
|
|
wka_port->status = ZFCP_FC_WKA_PORT_OFFLINE;
|
|
wake_up(&wka_port->completion_wq);
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_close_wka_port - create and send close wka port request
|
|
* @wka_port: WKA port to open
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_close_wka_port(struct zfcp_fc_wka_port *wka_port)
|
|
{
|
|
struct zfcp_qdio *qdio = wka_port->adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PORT,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->handler = zfcp_fsf_close_wka_port_handler;
|
|
req->data = wka_port;
|
|
req->qtcb->header.port_handle = wka_port->handle;
|
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval)
|
|
zfcp_fsf_req_free(req);
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_port *port = req->data;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
struct scsi_device *sdev;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
switch (header->fsf_status) {
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
zfcp_erp_adapter_reopen(port->adapter, 0, "fscpph1");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ACCESS_DENIED:
|
|
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
|
|
break;
|
|
case FSF_PORT_BOXED:
|
|
/* can't use generic zfcp_erp_modify_port_status because
|
|
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port */
|
|
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
|
|
shost_for_each_device(sdev, port->adapter->scsi_host)
|
|
if (sdev_to_zfcp(sdev)->port == port)
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
|
|
&sdev_to_zfcp(sdev)->status);
|
|
zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
|
|
"fscpph2");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
/* fall through */
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
case FSF_GOOD:
|
|
/* can't use generic zfcp_erp_modify_port_status because
|
|
* ZFCP_STATUS_COMMON_OPEN must not be reset for the port
|
|
*/
|
|
atomic_clear_mask(ZFCP_STATUS_PORT_PHYS_OPEN, &port->status);
|
|
shost_for_each_device(sdev, port->adapter->scsi_host)
|
|
if (sdev_to_zfcp(sdev)->port == port)
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN,
|
|
&sdev_to_zfcp(sdev)->status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_close_physical_port - close physical port
|
|
* @erp_action: pointer to struct zfcp_erp_action
|
|
* Returns: 0 on success
|
|
*/
|
|
int zfcp_fsf_close_physical_port(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_PHYSICAL_PORT,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->data = erp_action->port;
|
|
req->qtcb->header.port_handle = erp_action->port->handle;
|
|
req->erp_action = erp_action;
|
|
req->handler = zfcp_fsf_close_physical_port_handler;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct zfcp_adapter *adapter = req->adapter;
|
|
struct scsi_device *sdev = req->data;
|
|
struct zfcp_scsi_dev *zfcp_sdev;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
zfcp_sdev = sdev_to_zfcp(sdev);
|
|
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED |
|
|
ZFCP_STATUS_LUN_SHARED |
|
|
ZFCP_STATUS_LUN_READONLY,
|
|
&zfcp_sdev->status);
|
|
|
|
switch (header->fsf_status) {
|
|
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
zfcp_erp_adapter_reopen(adapter, 0, "fsouh_1");
|
|
/* fall through */
|
|
case FSF_LUN_ALREADY_OPEN:
|
|
break;
|
|
case FSF_ACCESS_DENIED:
|
|
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_PORT_BOXED:
|
|
zfcp_erp_set_port_status(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_port_reopen(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ERP_FAILED, "fsouh_2");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_LUN_SHARING_VIOLATION:
|
|
zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
|
|
dev_warn(&adapter->ccw_device->dev,
|
|
"No handle is available for LUN "
|
|
"0x%016Lx on port 0x%016Lx\n",
|
|
(unsigned long long)zfcp_scsi_dev_lun(sdev),
|
|
(unsigned long long)zfcp_sdev->port->wwpn);
|
|
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ERP_FAILED);
|
|
/* fall through */
|
|
case FSF_INVALID_COMMAND_OPTION:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (header->fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
zfcp_fc_test_link(zfcp_sdev->port);
|
|
/* fall through */
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case FSF_GOOD:
|
|
zfcp_sdev->lun_handle = header->lun_handle;
|
|
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
|
|
zfcp_cfdc_open_lun_eval(sdev, bottom);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_open_lun - open LUN
|
|
* @erp_action: pointer to struct zfcp_erp_action
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_open_lun(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_adapter *adapter = erp_action->adapter;
|
|
struct zfcp_qdio *qdio = adapter->qdio;
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_OPEN_LUN,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->qtcb->header.port_handle = erp_action->port->handle;
|
|
req->qtcb->bottom.support.fcp_lun = zfcp_scsi_dev_lun(erp_action->sdev);
|
|
req->handler = zfcp_fsf_open_lun_handler;
|
|
req->data = erp_action->sdev;
|
|
req->erp_action = erp_action;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
|
|
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE))
|
|
req->qtcb->bottom.support.option = FSF_OPEN_LUN_SUPPRESS_BOXING;
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_close_lun_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct scsi_device *sdev = req->data;
|
|
struct zfcp_scsi_dev *zfcp_sdev;
|
|
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
return;
|
|
|
|
zfcp_sdev = sdev_to_zfcp(sdev);
|
|
|
|
switch (req->qtcb->header.fsf_status) {
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fscuh_1");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_LUN_HANDLE_NOT_VALID:
|
|
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fscuh_2");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_PORT_BOXED:
|
|
zfcp_erp_set_port_status(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_port_reopen(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ERP_FAILED, "fscuh_3");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
switch (req->qtcb->header.fsf_status_qual.word[0]) {
|
|
case FSF_SQ_INVOKE_LINK_TEST_PROCEDURE:
|
|
zfcp_fc_test_link(zfcp_sdev->port);
|
|
/* fall through */
|
|
case FSF_SQ_ULP_DEPENDENT_ERP_REQUIRED:
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
break;
|
|
case FSF_GOOD:
|
|
atomic_clear_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_close_LUN - close LUN
|
|
* @erp_action: pointer to erp_action triggering the "close LUN"
|
|
* Returns: 0 on success, error otherwise
|
|
*/
|
|
int zfcp_fsf_close_lun(struct zfcp_erp_action *erp_action)
|
|
{
|
|
struct zfcp_qdio *qdio = erp_action->adapter->qdio;
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
|
|
struct zfcp_fsf_req *req;
|
|
int retval = -EIO;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_CLOSE_LUN,
|
|
SBAL_SFLAGS0_TYPE_READ,
|
|
qdio->adapter->pool.erp_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
req->qtcb->header.port_handle = erp_action->port->handle;
|
|
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
|
|
req->handler = zfcp_fsf_close_lun_handler;
|
|
req->data = erp_action->sdev;
|
|
req->erp_action = erp_action;
|
|
erp_action->fsf_req_id = req->req_id;
|
|
|
|
zfcp_fsf_start_erp_timer(req);
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (retval) {
|
|
zfcp_fsf_req_free(req);
|
|
erp_action->fsf_req_id = 0;
|
|
}
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_update_lat(struct fsf_latency_record *lat_rec, u32 lat)
|
|
{
|
|
lat_rec->sum += lat;
|
|
lat_rec->min = min(lat_rec->min, lat);
|
|
lat_rec->max = max(lat_rec->max, lat);
|
|
}
|
|
|
|
static void zfcp_fsf_req_trace(struct zfcp_fsf_req *req, struct scsi_cmnd *scsi)
|
|
{
|
|
struct fsf_qual_latency_info *lat_in;
|
|
struct latency_cont *lat = NULL;
|
|
struct zfcp_scsi_dev *zfcp_sdev;
|
|
struct zfcp_blk_drv_data blktrc;
|
|
int ticks = req->adapter->timer_ticks;
|
|
|
|
lat_in = &req->qtcb->prefix.prot_status_qual.latency_info;
|
|
|
|
blktrc.flags = 0;
|
|
blktrc.magic = ZFCP_BLK_DRV_DATA_MAGIC;
|
|
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
|
|
blktrc.flags |= ZFCP_BLK_REQ_ERROR;
|
|
blktrc.inb_usage = 0;
|
|
blktrc.outb_usage = req->qdio_req.qdio_outb_usage;
|
|
|
|
if (req->adapter->adapter_features & FSF_FEATURE_MEASUREMENT_DATA &&
|
|
!(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
|
|
zfcp_sdev = sdev_to_zfcp(scsi->device);
|
|
blktrc.flags |= ZFCP_BLK_LAT_VALID;
|
|
blktrc.channel_lat = lat_in->channel_lat * ticks;
|
|
blktrc.fabric_lat = lat_in->fabric_lat * ticks;
|
|
|
|
switch (req->qtcb->bottom.io.data_direction) {
|
|
case FSF_DATADIR_DIF_READ_STRIP:
|
|
case FSF_DATADIR_DIF_READ_CONVERT:
|
|
case FSF_DATADIR_READ:
|
|
lat = &zfcp_sdev->latencies.read;
|
|
break;
|
|
case FSF_DATADIR_DIF_WRITE_INSERT:
|
|
case FSF_DATADIR_DIF_WRITE_CONVERT:
|
|
case FSF_DATADIR_WRITE:
|
|
lat = &zfcp_sdev->latencies.write;
|
|
break;
|
|
case FSF_DATADIR_CMND:
|
|
lat = &zfcp_sdev->latencies.cmd;
|
|
break;
|
|
}
|
|
|
|
if (lat) {
|
|
spin_lock(&zfcp_sdev->latencies.lock);
|
|
zfcp_fsf_update_lat(&lat->channel, lat_in->channel_lat);
|
|
zfcp_fsf_update_lat(&lat->fabric, lat_in->fabric_lat);
|
|
lat->counter++;
|
|
spin_unlock(&zfcp_sdev->latencies.lock);
|
|
}
|
|
}
|
|
|
|
blk_add_driver_data(scsi->request->q, scsi->request, &blktrc,
|
|
sizeof(blktrc));
|
|
}
|
|
|
|
static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
|
|
{
|
|
struct scsi_cmnd *scmnd = req->data;
|
|
struct scsi_device *sdev = scmnd->device;
|
|
struct zfcp_scsi_dev *zfcp_sdev;
|
|
struct fsf_qtcb_header *header = &req->qtcb->header;
|
|
|
|
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR))
|
|
return;
|
|
|
|
zfcp_sdev = sdev_to_zfcp(sdev);
|
|
|
|
switch (header->fsf_status) {
|
|
case FSF_HANDLE_MISMATCH:
|
|
case FSF_PORT_HANDLE_NOT_VALID:
|
|
zfcp_erp_adapter_reopen(zfcp_sdev->port->adapter, 0, "fssfch1");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_FCPLUN_NOT_VALID:
|
|
case FSF_LUN_HANDLE_NOT_VALID:
|
|
zfcp_erp_port_reopen(zfcp_sdev->port, 0, "fssfch2");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_SERVICE_CLASS_NOT_SUPPORTED:
|
|
zfcp_fsf_class_not_supp(req);
|
|
break;
|
|
case FSF_ACCESS_DENIED:
|
|
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_DIRECTION_INDICATOR_NOT_VALID:
|
|
dev_err(&req->adapter->ccw_device->dev,
|
|
"Incorrect direction %d, LUN 0x%016Lx on port "
|
|
"0x%016Lx closed\n",
|
|
req->qtcb->bottom.io.data_direction,
|
|
(unsigned long long)zfcp_scsi_dev_lun(sdev),
|
|
(unsigned long long)zfcp_sdev->port->wwpn);
|
|
zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
|
|
"fssfch3");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_CMND_LENGTH_NOT_VALID:
|
|
dev_err(&req->adapter->ccw_device->dev,
|
|
"Incorrect CDB length %d, LUN 0x%016Lx on "
|
|
"port 0x%016Lx closed\n",
|
|
req->qtcb->bottom.io.fcp_cmnd_length,
|
|
(unsigned long long)zfcp_scsi_dev_lun(sdev),
|
|
(unsigned long long)zfcp_sdev->port->wwpn);
|
|
zfcp_erp_adapter_shutdown(zfcp_sdev->port->adapter, 0,
|
|
"fssfch4");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_PORT_BOXED:
|
|
zfcp_erp_set_port_status(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_port_reopen(zfcp_sdev->port,
|
|
ZFCP_STATUS_COMMON_ERP_FAILED, "fssfch5");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_LUN_BOXED:
|
|
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_ACCESS_BOXED);
|
|
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED,
|
|
"fssfch6");
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
case FSF_ADAPTER_STATUS_AVAILABLE:
|
|
if (header->fsf_status_qual.word[0] ==
|
|
FSF_SQ_INVOKE_LINK_TEST_PROCEDURE)
|
|
zfcp_fc_test_link(zfcp_sdev->port);
|
|
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void zfcp_fsf_fcp_cmnd_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct scsi_cmnd *scpnt;
|
|
struct fcp_resp_with_ext *fcp_rsp;
|
|
unsigned long flags;
|
|
|
|
read_lock_irqsave(&req->adapter->abort_lock, flags);
|
|
|
|
scpnt = req->data;
|
|
if (unlikely(!scpnt)) {
|
|
read_unlock_irqrestore(&req->adapter->abort_lock, flags);
|
|
return;
|
|
}
|
|
|
|
zfcp_fsf_fcp_handler_common(req);
|
|
|
|
if (unlikely(req->status & ZFCP_STATUS_FSFREQ_ERROR)) {
|
|
set_host_byte(scpnt, DID_TRANSPORT_DISRUPTED);
|
|
goto skip_fsfstatus;
|
|
}
|
|
|
|
switch (req->qtcb->header.fsf_status) {
|
|
case FSF_INCONSISTENT_PROT_DATA:
|
|
case FSF_INVALID_PROT_PARM:
|
|
set_host_byte(scpnt, DID_ERROR);
|
|
goto skip_fsfstatus;
|
|
case FSF_BLOCK_GUARD_CHECK_FAILURE:
|
|
zfcp_scsi_dif_sense_error(scpnt, 0x1);
|
|
goto skip_fsfstatus;
|
|
case FSF_APP_TAG_CHECK_FAILURE:
|
|
zfcp_scsi_dif_sense_error(scpnt, 0x2);
|
|
goto skip_fsfstatus;
|
|
case FSF_REF_TAG_CHECK_FAILURE:
|
|
zfcp_scsi_dif_sense_error(scpnt, 0x3);
|
|
goto skip_fsfstatus;
|
|
}
|
|
fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
|
|
zfcp_fc_eval_fcp_rsp(fcp_rsp, scpnt);
|
|
|
|
skip_fsfstatus:
|
|
zfcp_fsf_req_trace(req, scpnt);
|
|
zfcp_dbf_scsi_result(scpnt, req);
|
|
|
|
scpnt->host_scribble = NULL;
|
|
(scpnt->scsi_done) (scpnt);
|
|
/*
|
|
* We must hold this lock until scsi_done has been called.
|
|
* Otherwise we may call scsi_done after abort regarding this
|
|
* command has completed.
|
|
* Note: scsi_done must not block!
|
|
*/
|
|
read_unlock_irqrestore(&req->adapter->abort_lock, flags);
|
|
}
|
|
|
|
static int zfcp_fsf_set_data_dir(struct scsi_cmnd *scsi_cmnd, u32 *data_dir)
|
|
{
|
|
switch (scsi_get_prot_op(scsi_cmnd)) {
|
|
case SCSI_PROT_NORMAL:
|
|
switch (scsi_cmnd->sc_data_direction) {
|
|
case DMA_NONE:
|
|
*data_dir = FSF_DATADIR_CMND;
|
|
break;
|
|
case DMA_FROM_DEVICE:
|
|
*data_dir = FSF_DATADIR_READ;
|
|
break;
|
|
case DMA_TO_DEVICE:
|
|
*data_dir = FSF_DATADIR_WRITE;
|
|
break;
|
|
case DMA_BIDIRECTIONAL:
|
|
return -EINVAL;
|
|
}
|
|
break;
|
|
|
|
case SCSI_PROT_READ_STRIP:
|
|
*data_dir = FSF_DATADIR_DIF_READ_STRIP;
|
|
break;
|
|
case SCSI_PROT_WRITE_INSERT:
|
|
*data_dir = FSF_DATADIR_DIF_WRITE_INSERT;
|
|
break;
|
|
case SCSI_PROT_READ_PASS:
|
|
*data_dir = FSF_DATADIR_DIF_READ_CONVERT;
|
|
break;
|
|
case SCSI_PROT_WRITE_PASS:
|
|
*data_dir = FSF_DATADIR_DIF_WRITE_CONVERT;
|
|
break;
|
|
default:
|
|
return -EINVAL;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_fcp_cmnd - initiate an FCP command (for a SCSI command)
|
|
* @scsi_cmnd: scsi command to be sent
|
|
*/
|
|
int zfcp_fsf_fcp_cmnd(struct scsi_cmnd *scsi_cmnd)
|
|
{
|
|
struct zfcp_fsf_req *req;
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
u8 sbtype = SBAL_SFLAGS0_TYPE_READ;
|
|
int retval = -EIO;
|
|
struct scsi_device *sdev = scsi_cmnd->device;
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
|
|
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
|
|
struct zfcp_qdio *qdio = adapter->qdio;
|
|
struct fsf_qtcb_bottom_io *io;
|
|
unsigned long flags;
|
|
|
|
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
|
|
ZFCP_STATUS_COMMON_UNBLOCKED)))
|
|
return -EBUSY;
|
|
|
|
spin_lock_irqsave(&qdio->req_q_lock, flags);
|
|
if (atomic_read(&qdio->req_q_free) <= 0) {
|
|
atomic_inc(&qdio->req_q_full);
|
|
goto out;
|
|
}
|
|
|
|
if (scsi_cmnd->sc_data_direction == DMA_TO_DEVICE)
|
|
sbtype = SBAL_SFLAGS0_TYPE_WRITE;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
|
|
sbtype, adapter->pool.scsi_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
retval = PTR_ERR(req);
|
|
goto out;
|
|
}
|
|
|
|
scsi_cmnd->host_scribble = (unsigned char *) req->req_id;
|
|
|
|
io = &req->qtcb->bottom.io;
|
|
req->status |= ZFCP_STATUS_FSFREQ_CLEANUP;
|
|
req->data = scsi_cmnd;
|
|
req->handler = zfcp_fsf_fcp_cmnd_handler;
|
|
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
|
|
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
|
|
io->service_class = FSF_CLASS_3;
|
|
io->fcp_cmnd_length = FCP_CMND_LEN;
|
|
|
|
if (scsi_get_prot_op(scsi_cmnd) != SCSI_PROT_NORMAL) {
|
|
io->data_block_length = scsi_cmnd->device->sector_size;
|
|
io->ref_tag_value = scsi_get_lba(scsi_cmnd) & 0xFFFFFFFF;
|
|
}
|
|
|
|
if (zfcp_fsf_set_data_dir(scsi_cmnd, &io->data_direction))
|
|
goto failed_scsi_cmnd;
|
|
|
|
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
|
|
zfcp_fc_scsi_to_fcp(fcp_cmnd, scsi_cmnd, 0);
|
|
|
|
if (scsi_prot_sg_count(scsi_cmnd)) {
|
|
zfcp_qdio_set_data_div(qdio, &req->qdio_req,
|
|
scsi_prot_sg_count(scsi_cmnd));
|
|
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
|
|
scsi_prot_sglist(scsi_cmnd));
|
|
if (retval)
|
|
goto failed_scsi_cmnd;
|
|
io->prot_data_length = zfcp_qdio_real_bytes(
|
|
scsi_prot_sglist(scsi_cmnd));
|
|
}
|
|
|
|
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req,
|
|
scsi_sglist(scsi_cmnd));
|
|
if (unlikely(retval))
|
|
goto failed_scsi_cmnd;
|
|
|
|
zfcp_qdio_set_sbale_last(adapter->qdio, &req->qdio_req);
|
|
if (zfcp_adapter_multi_buffer_active(adapter))
|
|
zfcp_qdio_set_scount(qdio, &req->qdio_req);
|
|
|
|
retval = zfcp_fsf_req_send(req);
|
|
if (unlikely(retval))
|
|
goto failed_scsi_cmnd;
|
|
|
|
goto out;
|
|
|
|
failed_scsi_cmnd:
|
|
zfcp_fsf_req_free(req);
|
|
scsi_cmnd->host_scribble = NULL;
|
|
out:
|
|
spin_unlock_irqrestore(&qdio->req_q_lock, flags);
|
|
return retval;
|
|
}
|
|
|
|
static void zfcp_fsf_fcp_task_mgmt_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
struct fcp_resp_with_ext *fcp_rsp;
|
|
struct fcp_resp_rsp_info *rsp_info;
|
|
|
|
zfcp_fsf_fcp_handler_common(req);
|
|
|
|
fcp_rsp = (struct fcp_resp_with_ext *) &req->qtcb->bottom.io.fcp_rsp;
|
|
rsp_info = (struct fcp_resp_rsp_info *) &fcp_rsp[1];
|
|
|
|
if ((rsp_info->rsp_code != FCP_TMF_CMPL) ||
|
|
(req->status & ZFCP_STATUS_FSFREQ_ERROR))
|
|
req->status |= ZFCP_STATUS_FSFREQ_TMFUNCFAILED;
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_fcp_task_mgmt - send SCSI task management command
|
|
* @scmnd: SCSI command to send the task management command for
|
|
* @tm_flags: unsigned byte for task management flags
|
|
* Returns: on success pointer to struct fsf_req, NULL otherwise
|
|
*/
|
|
struct zfcp_fsf_req *zfcp_fsf_fcp_task_mgmt(struct scsi_cmnd *scmnd,
|
|
u8 tm_flags)
|
|
{
|
|
struct zfcp_fsf_req *req = NULL;
|
|
struct fcp_cmnd *fcp_cmnd;
|
|
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scmnd->device);
|
|
struct zfcp_qdio *qdio = zfcp_sdev->port->adapter->qdio;
|
|
|
|
if (unlikely(!(atomic_read(&zfcp_sdev->status) &
|
|
ZFCP_STATUS_COMMON_UNBLOCKED)))
|
|
return NULL;
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, FSF_QTCB_FCP_CMND,
|
|
SBAL_SFLAGS0_TYPE_WRITE,
|
|
qdio->adapter->pool.scsi_req);
|
|
|
|
if (IS_ERR(req)) {
|
|
req = NULL;
|
|
goto out;
|
|
}
|
|
|
|
req->data = scmnd;
|
|
req->handler = zfcp_fsf_fcp_task_mgmt_handler;
|
|
req->qtcb->header.lun_handle = zfcp_sdev->lun_handle;
|
|
req->qtcb->header.port_handle = zfcp_sdev->port->handle;
|
|
req->qtcb->bottom.io.data_direction = FSF_DATADIR_CMND;
|
|
req->qtcb->bottom.io.service_class = FSF_CLASS_3;
|
|
req->qtcb->bottom.io.fcp_cmnd_length = FCP_CMND_LEN;
|
|
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
|
|
fcp_cmnd = (struct fcp_cmnd *) &req->qtcb->bottom.io.fcp_cmnd;
|
|
zfcp_fc_scsi_to_fcp(fcp_cmnd, scmnd, tm_flags);
|
|
|
|
zfcp_fsf_start_timer(req, ZFCP_SCSI_ER_TIMEOUT);
|
|
if (!zfcp_fsf_req_send(req))
|
|
goto out;
|
|
|
|
zfcp_fsf_req_free(req);
|
|
req = NULL;
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
return req;
|
|
}
|
|
|
|
static void zfcp_fsf_control_file_handler(struct zfcp_fsf_req *req)
|
|
{
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_control_file - control file upload/download
|
|
* @adapter: pointer to struct zfcp_adapter
|
|
* @fsf_cfdc: pointer to struct zfcp_fsf_cfdc
|
|
* Returns: on success pointer to struct zfcp_fsf_req, NULL otherwise
|
|
*/
|
|
struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *adapter,
|
|
struct zfcp_fsf_cfdc *fsf_cfdc)
|
|
{
|
|
struct zfcp_qdio *qdio = adapter->qdio;
|
|
struct zfcp_fsf_req *req = NULL;
|
|
struct fsf_qtcb_bottom_support *bottom;
|
|
int retval = -EIO;
|
|
u8 direction;
|
|
|
|
if (!(adapter->adapter_features & FSF_FEATURE_CFDC))
|
|
return ERR_PTR(-EOPNOTSUPP);
|
|
|
|
switch (fsf_cfdc->command) {
|
|
case FSF_QTCB_DOWNLOAD_CONTROL_FILE:
|
|
direction = SBAL_SFLAGS0_TYPE_WRITE;
|
|
break;
|
|
case FSF_QTCB_UPLOAD_CONTROL_FILE:
|
|
direction = SBAL_SFLAGS0_TYPE_READ;
|
|
break;
|
|
default:
|
|
return ERR_PTR(-EINVAL);
|
|
}
|
|
|
|
spin_lock_irq(&qdio->req_q_lock);
|
|
if (zfcp_qdio_sbal_get(qdio))
|
|
goto out;
|
|
|
|
req = zfcp_fsf_req_create(qdio, fsf_cfdc->command, direction, NULL);
|
|
if (IS_ERR(req)) {
|
|
retval = -EPERM;
|
|
goto out;
|
|
}
|
|
|
|
req->handler = zfcp_fsf_control_file_handler;
|
|
|
|
bottom = &req->qtcb->bottom.support;
|
|
bottom->operation_subtype = FSF_CFDC_OPERATION_SUBTYPE;
|
|
bottom->option = fsf_cfdc->option;
|
|
|
|
retval = zfcp_qdio_sbals_from_sg(qdio, &req->qdio_req, fsf_cfdc->sg);
|
|
|
|
if (retval ||
|
|
(zfcp_qdio_real_bytes(fsf_cfdc->sg) != ZFCP_CFDC_MAX_SIZE)) {
|
|
zfcp_fsf_req_free(req);
|
|
retval = -EIO;
|
|
goto out;
|
|
}
|
|
zfcp_qdio_set_sbale_last(qdio, &req->qdio_req);
|
|
if (zfcp_adapter_multi_buffer_active(adapter))
|
|
zfcp_qdio_set_scount(qdio, &req->qdio_req);
|
|
|
|
zfcp_fsf_start_timer(req, ZFCP_FSF_REQUEST_TIMEOUT);
|
|
retval = zfcp_fsf_req_send(req);
|
|
out:
|
|
spin_unlock_irq(&qdio->req_q_lock);
|
|
|
|
if (!retval) {
|
|
wait_for_completion(&req->completion);
|
|
return req;
|
|
}
|
|
return ERR_PTR(retval);
|
|
}
|
|
|
|
/**
|
|
* zfcp_fsf_reqid_check - validate req_id contained in SBAL returned by QDIO
|
|
* @adapter: pointer to struct zfcp_adapter
|
|
* @sbal_idx: response queue index of SBAL to be processed
|
|
*/
|
|
void zfcp_fsf_reqid_check(struct zfcp_qdio *qdio, int sbal_idx)
|
|
{
|
|
struct zfcp_adapter *adapter = qdio->adapter;
|
|
struct qdio_buffer *sbal = qdio->res_q[sbal_idx];
|
|
struct qdio_buffer_element *sbale;
|
|
struct zfcp_fsf_req *fsf_req;
|
|
unsigned long req_id;
|
|
int idx;
|
|
|
|
for (idx = 0; idx < QDIO_MAX_ELEMENTS_PER_BUFFER; idx++) {
|
|
|
|
sbale = &sbal->element[idx];
|
|
req_id = (unsigned long) sbale->addr;
|
|
fsf_req = zfcp_reqlist_find_rm(adapter->req_list, req_id);
|
|
|
|
if (!fsf_req) {
|
|
/*
|
|
* Unknown request means that we have potentially memory
|
|
* corruption and must stop the machine immediately.
|
|
*/
|
|
zfcp_qdio_siosl(adapter);
|
|
panic("error: unknown req_id (%lx) on adapter %s.\n",
|
|
req_id, dev_name(&adapter->ccw_device->dev));
|
|
}
|
|
|
|
fsf_req->qdio_req.sbal_response = sbal_idx;
|
|
zfcp_fsf_req_complete(fsf_req);
|
|
|
|
if (likely(sbale->eflags & SBAL_EFLAGS_LAST_ENTRY))
|
|
break;
|
|
}
|
|
}
|
|
|
|
struct zfcp_fsf_req *zfcp_fsf_get_req(struct zfcp_qdio *qdio,
|
|
struct qdio_buffer *sbal)
|
|
{
|
|
struct qdio_buffer_element *sbale = &sbal->element[0];
|
|
u64 req_id = (unsigned long) sbale->addr;
|
|
|
|
return zfcp_reqlist_find(qdio->adapter->req_list, req_id);
|
|
}
|