5a7de559b4
When the successful return of an adisc is the final step to set the port online, the registration of SCSI devices might be omitted. SCSI devices that have been removed before (due to a short dev_loss_tmo setting) might not be attached again. The problem is that the registration of SCSI devices is done only after erp has finished. The correct place would be after the call to fc_remote_port_add to mimick the scan in the FC transport class. Change the registration of SCSI devices to be triggered after the fc_remote_port_add call. For the initial inquiry command to succeed, the unit must also be open. If the unit reopen is still pending, the inquiry command to the LUN will be deferred with DID_IMM_RETRY, so there is no harm from this approach. Reviewed-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
710 lines
19 KiB
C
710 lines
19 KiB
C
/*
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* zfcp device driver
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*
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* Interface to Linux SCSI midlayer.
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*
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* Copyright IBM Corporation 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/types.h>
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#include <linux/slab.h>
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#include <scsi/fc/fc_fcp.h>
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#include <asm/atomic.h>
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#include "zfcp_ext.h"
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#include "zfcp_dbf.h"
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#include "zfcp_fc.h"
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#include "zfcp_reqlist.h"
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static unsigned int default_depth = 32;
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module_param_named(queue_depth, default_depth, uint, 0600);
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MODULE_PARM_DESC(queue_depth, "Default queue depth for new SCSI devices");
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static int zfcp_scsi_change_queue_depth(struct scsi_device *sdev, int depth,
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int reason)
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{
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switch (reason) {
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case SCSI_QDEPTH_DEFAULT:
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scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
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break;
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case SCSI_QDEPTH_QFULL:
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scsi_track_queue_full(sdev, depth);
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break;
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case SCSI_QDEPTH_RAMP_UP:
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scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev), depth);
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break;
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default:
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return -EOPNOTSUPP;
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}
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return sdev->queue_depth;
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}
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static void zfcp_scsi_slave_destroy(struct scsi_device *sdpnt)
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{
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struct zfcp_unit *unit = (struct zfcp_unit *) sdpnt->hostdata;
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unit->device = NULL;
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put_device(&unit->dev);
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}
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static int zfcp_scsi_slave_configure(struct scsi_device *sdp)
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{
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if (sdp->tagged_supported)
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scsi_adjust_queue_depth(sdp, MSG_SIMPLE_TAG, default_depth);
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else
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scsi_adjust_queue_depth(sdp, 0, 1);
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return 0;
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}
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static void zfcp_scsi_command_fail(struct scsi_cmnd *scpnt, int result)
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{
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struct zfcp_adapter *adapter =
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(struct zfcp_adapter *) scpnt->device->host->hostdata[0];
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set_host_byte(scpnt, result);
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zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
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scpnt->scsi_done(scpnt);
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}
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static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
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void (*done) (struct scsi_cmnd *))
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{
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struct zfcp_unit *unit;
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struct zfcp_adapter *adapter;
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int status, scsi_result, ret;
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struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
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/* reset the status for this request */
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scpnt->result = 0;
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scpnt->host_scribble = NULL;
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scpnt->scsi_done = done;
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/*
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* figure out adapter and target device
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* (stored there by zfcp_scsi_slave_alloc)
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*/
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adapter = (struct zfcp_adapter *) scpnt->device->host->hostdata[0];
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unit = scpnt->device->hostdata;
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scsi_result = fc_remote_port_chkready(rport);
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if (unlikely(scsi_result)) {
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scpnt->result = scsi_result;
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zfcp_dbf_scsi_fail_send(adapter->dbf, scpnt);
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scpnt->scsi_done(scpnt);
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return 0;
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}
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status = atomic_read(&unit->status);
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if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
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!(atomic_read(&unit->port->status) &
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ZFCP_STATUS_COMMON_ERP_FAILED)) {
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/* only unit access denied, but port is good
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* not covered by FC transport, have to fail here */
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zfcp_scsi_command_fail(scpnt, DID_ERROR);
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return 0;
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}
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if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
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/* This could be either
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* open unit pending: this is temporary, will result in
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* open unit or ERP_FAILED, so retry command
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* call to rport_delete pending: mimic retry from
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* fc_remote_port_chkready until rport is BLOCKED
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*/
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zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
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return 0;
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}
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ret = zfcp_fsf_send_fcp_command_task(unit, scpnt);
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if (unlikely(ret == -EBUSY))
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return SCSI_MLQUEUE_DEVICE_BUSY;
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else if (unlikely(ret < 0))
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return SCSI_MLQUEUE_HOST_BUSY;
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return ret;
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}
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static struct zfcp_unit *zfcp_unit_lookup(struct zfcp_adapter *adapter,
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unsigned int id, u64 lun)
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{
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unsigned long flags;
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struct zfcp_port *port;
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struct zfcp_unit *unit = NULL;
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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->rport || (id != port->rport->scsi_target_id))
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continue;
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unit = zfcp_get_unit_by_lun(port, lun);
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if (unit)
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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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return unit;
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}
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static int zfcp_scsi_slave_alloc(struct scsi_device *sdp)
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{
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struct zfcp_adapter *adapter;
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struct zfcp_unit *unit;
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u64 lun;
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adapter = (struct zfcp_adapter *) sdp->host->hostdata[0];
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if (!adapter)
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goto out;
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int_to_scsilun(sdp->lun, (struct scsi_lun *)&lun);
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unit = zfcp_unit_lookup(adapter, sdp->id, lun);
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if (unit) {
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sdp->hostdata = unit;
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unit->device = sdp;
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return 0;
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}
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out:
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return -ENXIO;
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}
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static int zfcp_scsi_eh_abort_handler(struct scsi_cmnd *scpnt)
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{
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struct Scsi_Host *scsi_host = scpnt->device->host;
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struct zfcp_adapter *adapter =
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(struct zfcp_adapter *) scsi_host->hostdata[0];
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struct zfcp_unit *unit = scpnt->device->hostdata;
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struct zfcp_fsf_req *old_req, *abrt_req;
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unsigned long flags;
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unsigned long old_reqid = (unsigned long) scpnt->host_scribble;
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int retval = SUCCESS, ret;
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int retry = 3;
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char *dbf_tag;
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/* avoid race condition between late normal completion and abort */
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write_lock_irqsave(&adapter->abort_lock, flags);
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old_req = zfcp_reqlist_find(adapter->req_list, old_reqid);
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if (!old_req) {
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write_unlock_irqrestore(&adapter->abort_lock, flags);
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zfcp_dbf_scsi_abort("lte1", adapter->dbf, scpnt, NULL,
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old_reqid);
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return FAILED; /* completion could be in progress */
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}
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old_req->data = NULL;
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/* don't access old fsf_req after releasing the abort_lock */
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write_unlock_irqrestore(&adapter->abort_lock, flags);
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while (retry--) {
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abrt_req = zfcp_fsf_abort_fcp_command(old_reqid, unit);
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if (abrt_req)
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break;
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zfcp_erp_wait(adapter);
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ret = fc_block_scsi_eh(scpnt);
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if (ret)
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return ret;
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if (!(atomic_read(&adapter->status) &
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ZFCP_STATUS_COMMON_RUNNING)) {
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zfcp_dbf_scsi_abort("nres", adapter->dbf, scpnt, NULL,
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old_reqid);
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return SUCCESS;
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}
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}
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if (!abrt_req)
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return FAILED;
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wait_for_completion(&abrt_req->completion);
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if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTSUCCEEDED)
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dbf_tag = "okay";
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else if (abrt_req->status & ZFCP_STATUS_FSFREQ_ABORTNOTNEEDED)
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dbf_tag = "lte2";
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else {
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dbf_tag = "fail";
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retval = FAILED;
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}
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zfcp_dbf_scsi_abort(dbf_tag, adapter->dbf, scpnt, abrt_req, old_reqid);
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zfcp_fsf_req_free(abrt_req);
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return retval;
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}
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static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
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{
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struct zfcp_unit *unit = scpnt->device->hostdata;
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struct zfcp_adapter *adapter = unit->port->adapter;
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struct zfcp_fsf_req *fsf_req = NULL;
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int retval = SUCCESS, ret;
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int retry = 3;
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while (retry--) {
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fsf_req = zfcp_fsf_send_fcp_ctm(unit, tm_flags);
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if (fsf_req)
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break;
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zfcp_erp_wait(adapter);
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ret = fc_block_scsi_eh(scpnt);
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if (ret)
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return ret;
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if (!(atomic_read(&adapter->status) &
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ZFCP_STATUS_COMMON_RUNNING)) {
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zfcp_dbf_scsi_devreset("nres", tm_flags, unit, scpnt);
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return SUCCESS;
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}
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}
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if (!fsf_req)
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return FAILED;
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wait_for_completion(&fsf_req->completion);
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if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
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zfcp_dbf_scsi_devreset("fail", tm_flags, unit, scpnt);
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retval = FAILED;
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} else
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zfcp_dbf_scsi_devreset("okay", tm_flags, unit, scpnt);
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zfcp_fsf_req_free(fsf_req);
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return retval;
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}
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static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
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{
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return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
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}
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static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
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{
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return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
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}
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static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
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{
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struct zfcp_unit *unit = scpnt->device->hostdata;
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struct zfcp_adapter *adapter = unit->port->adapter;
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int ret;
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zfcp_erp_adapter_reopen(adapter, 0, "schrh_1", scpnt);
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zfcp_erp_wait(adapter);
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ret = fc_block_scsi_eh(scpnt);
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if (ret)
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return ret;
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return SUCCESS;
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}
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int zfcp_adapter_scsi_register(struct zfcp_adapter *adapter)
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{
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struct ccw_dev_id dev_id;
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if (adapter->scsi_host)
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return 0;
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ccw_device_get_id(adapter->ccw_device, &dev_id);
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/* register adapter as SCSI host with mid layer of SCSI stack */
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adapter->scsi_host = scsi_host_alloc(&zfcp_data.scsi_host_template,
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sizeof (struct zfcp_adapter *));
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if (!adapter->scsi_host) {
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dev_err(&adapter->ccw_device->dev,
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"Registering the FCP device with the "
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"SCSI stack failed\n");
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return -EIO;
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}
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/* tell the SCSI stack some characteristics of this adapter */
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adapter->scsi_host->max_id = 1;
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adapter->scsi_host->max_lun = 1;
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adapter->scsi_host->max_channel = 0;
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adapter->scsi_host->unique_id = dev_id.devno;
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adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
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adapter->scsi_host->transportt = zfcp_data.scsi_transport_template;
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adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
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if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
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scsi_host_put(adapter->scsi_host);
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return -EIO;
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}
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return 0;
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}
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void zfcp_adapter_scsi_unregister(struct zfcp_adapter *adapter)
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{
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struct Scsi_Host *shost;
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struct zfcp_port *port;
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shost = adapter->scsi_host;
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if (!shost)
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return;
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read_lock_irq(&adapter->port_list_lock);
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list_for_each_entry(port, &adapter->port_list, list)
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port->rport = NULL;
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read_unlock_irq(&adapter->port_list_lock);
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fc_remove_host(shost);
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scsi_remove_host(shost);
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scsi_host_put(shost);
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adapter->scsi_host = NULL;
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return;
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}
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static struct fc_host_statistics*
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zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
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{
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struct fc_host_statistics *fc_stats;
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if (!adapter->fc_stats) {
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fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
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if (!fc_stats)
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return NULL;
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adapter->fc_stats = fc_stats; /* freed in adapter_release */
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}
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memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
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return adapter->fc_stats;
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}
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static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
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struct fsf_qtcb_bottom_port *data,
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struct fsf_qtcb_bottom_port *old)
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{
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fc_stats->seconds_since_last_reset =
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data->seconds_since_last_reset - old->seconds_since_last_reset;
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fc_stats->tx_frames = data->tx_frames - old->tx_frames;
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fc_stats->tx_words = data->tx_words - old->tx_words;
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fc_stats->rx_frames = data->rx_frames - old->rx_frames;
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fc_stats->rx_words = data->rx_words - old->rx_words;
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fc_stats->lip_count = data->lip - old->lip;
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fc_stats->nos_count = data->nos - old->nos;
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fc_stats->error_frames = data->error_frames - old->error_frames;
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fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
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fc_stats->link_failure_count = data->link_failure - old->link_failure;
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fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
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fc_stats->loss_of_signal_count =
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data->loss_of_signal - old->loss_of_signal;
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fc_stats->prim_seq_protocol_err_count =
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data->psp_error_counts - old->psp_error_counts;
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fc_stats->invalid_tx_word_count =
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data->invalid_tx_words - old->invalid_tx_words;
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fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
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fc_stats->fcp_input_requests =
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data->input_requests - old->input_requests;
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fc_stats->fcp_output_requests =
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data->output_requests - old->output_requests;
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fc_stats->fcp_control_requests =
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data->control_requests - old->control_requests;
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fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
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fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
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}
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static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
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struct fsf_qtcb_bottom_port *data)
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{
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fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
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fc_stats->tx_frames = data->tx_frames;
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fc_stats->tx_words = data->tx_words;
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fc_stats->rx_frames = data->rx_frames;
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fc_stats->rx_words = data->rx_words;
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fc_stats->lip_count = data->lip;
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fc_stats->nos_count = data->nos;
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fc_stats->error_frames = data->error_frames;
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fc_stats->dumped_frames = data->dumped_frames;
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fc_stats->link_failure_count = data->link_failure;
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fc_stats->loss_of_sync_count = data->loss_of_sync;
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fc_stats->loss_of_signal_count = data->loss_of_signal;
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fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
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fc_stats->invalid_tx_word_count = data->invalid_tx_words;
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fc_stats->invalid_crc_count = data->invalid_crcs;
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fc_stats->fcp_input_requests = data->input_requests;
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fc_stats->fcp_output_requests = data->output_requests;
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fc_stats->fcp_control_requests = data->control_requests;
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fc_stats->fcp_input_megabytes = data->input_mb;
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fc_stats->fcp_output_megabytes = data->output_mb;
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}
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static struct fc_host_statistics *zfcp_get_fc_host_stats(struct Scsi_Host *host)
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{
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struct zfcp_adapter *adapter;
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struct fc_host_statistics *fc_stats;
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struct fsf_qtcb_bottom_port *data;
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int ret;
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adapter = (struct zfcp_adapter *)host->hostdata[0];
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fc_stats = zfcp_init_fc_host_stats(adapter);
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if (!fc_stats)
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return NULL;
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data = kzalloc(sizeof(*data), GFP_KERNEL);
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if (!data)
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return NULL;
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ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
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if (ret) {
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kfree(data);
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return NULL;
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}
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if (adapter->stats_reset &&
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((jiffies/HZ - adapter->stats_reset) <
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data->seconds_since_last_reset))
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zfcp_adjust_fc_host_stats(fc_stats, data,
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|
adapter->stats_reset_data);
|
|
else
|
|
zfcp_set_fc_host_stats(fc_stats, data);
|
|
|
|
kfree(data);
|
|
return fc_stats;
|
|
}
|
|
|
|
static void zfcp_reset_fc_host_stats(struct Scsi_Host *shost)
|
|
{
|
|
struct zfcp_adapter *adapter;
|
|
struct fsf_qtcb_bottom_port *data;
|
|
int ret;
|
|
|
|
adapter = (struct zfcp_adapter *)shost->hostdata[0];
|
|
data = kzalloc(sizeof(*data), GFP_KERNEL);
|
|
if (!data)
|
|
return;
|
|
|
|
ret = zfcp_fsf_exchange_port_data_sync(adapter->qdio, data);
|
|
if (ret)
|
|
kfree(data);
|
|
else {
|
|
adapter->stats_reset = jiffies/HZ;
|
|
kfree(adapter->stats_reset_data);
|
|
adapter->stats_reset_data = data; /* finally freed in
|
|
adapter_release */
|
|
}
|
|
}
|
|
|
|
static void zfcp_get_host_port_state(struct Scsi_Host *shost)
|
|
{
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
int status = atomic_read(&adapter->status);
|
|
|
|
if ((status & ZFCP_STATUS_COMMON_RUNNING) &&
|
|
!(status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED))
|
|
fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
|
|
else if (status & ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED)
|
|
fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
|
|
else if (status & ZFCP_STATUS_COMMON_ERP_FAILED)
|
|
fc_host_port_state(shost) = FC_PORTSTATE_ERROR;
|
|
else
|
|
fc_host_port_state(shost) = FC_PORTSTATE_UNKNOWN;
|
|
}
|
|
|
|
static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
|
|
{
|
|
rport->dev_loss_tmo = timeout;
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
|
|
* @rport: The FC rport where to teminate I/O
|
|
*
|
|
* Abort all pending SCSI commands for a port by closing the
|
|
* port. Using a reopen avoiding a conflict with a shutdown
|
|
* overwriting a reopen.
|
|
*/
|
|
static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
|
|
{
|
|
struct zfcp_port *port;
|
|
struct Scsi_Host *shost = rport_to_shost(rport);
|
|
struct zfcp_adapter *adapter =
|
|
(struct zfcp_adapter *)shost->hostdata[0];
|
|
|
|
port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
|
|
|
|
if (port) {
|
|
zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
|
|
put_device(&port->dev);
|
|
}
|
|
}
|
|
|
|
static void zfcp_scsi_queue_unit_register(struct zfcp_port *port)
|
|
{
|
|
struct zfcp_unit *unit;
|
|
|
|
read_lock_irq(&port->unit_list_lock);
|
|
list_for_each_entry(unit, &port->unit_list, list) {
|
|
get_device(&unit->dev);
|
|
if (scsi_queue_work(port->adapter->scsi_host,
|
|
&unit->scsi_work) <= 0)
|
|
put_device(&unit->dev);
|
|
}
|
|
read_unlock_irq(&port->unit_list_lock);
|
|
}
|
|
|
|
static void zfcp_scsi_rport_register(struct zfcp_port *port)
|
|
{
|
|
struct fc_rport_identifiers ids;
|
|
struct fc_rport *rport;
|
|
|
|
if (port->rport)
|
|
return;
|
|
|
|
ids.node_name = port->wwnn;
|
|
ids.port_name = port->wwpn;
|
|
ids.port_id = port->d_id;
|
|
ids.roles = FC_RPORT_ROLE_FCP_TARGET;
|
|
|
|
rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
|
|
if (!rport) {
|
|
dev_err(&port->adapter->ccw_device->dev,
|
|
"Registering port 0x%016Lx failed\n",
|
|
(unsigned long long)port->wwpn);
|
|
return;
|
|
}
|
|
|
|
rport->maxframe_size = port->maxframe_size;
|
|
rport->supported_classes = port->supported_classes;
|
|
port->rport = rport;
|
|
|
|
zfcp_scsi_queue_unit_register(port);
|
|
}
|
|
|
|
static void zfcp_scsi_rport_block(struct zfcp_port *port)
|
|
{
|
|
struct fc_rport *rport = port->rport;
|
|
|
|
if (rport) {
|
|
fc_remote_port_delete(rport);
|
|
port->rport = NULL;
|
|
}
|
|
}
|
|
|
|
void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
|
|
{
|
|
get_device(&port->dev);
|
|
port->rport_task = RPORT_ADD;
|
|
|
|
if (!queue_work(port->adapter->work_queue, &port->rport_work))
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
|
|
{
|
|
get_device(&port->dev);
|
|
port->rport_task = RPORT_DEL;
|
|
|
|
if (port->rport && queue_work(port->adapter->work_queue,
|
|
&port->rport_work))
|
|
return;
|
|
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
|
|
{
|
|
unsigned long flags;
|
|
struct zfcp_port *port;
|
|
|
|
read_lock_irqsave(&adapter->port_list_lock, flags);
|
|
list_for_each_entry(port, &adapter->port_list, list)
|
|
zfcp_scsi_schedule_rport_block(port);
|
|
read_unlock_irqrestore(&adapter->port_list_lock, flags);
|
|
}
|
|
|
|
void zfcp_scsi_rport_work(struct work_struct *work)
|
|
{
|
|
struct zfcp_port *port = container_of(work, struct zfcp_port,
|
|
rport_work);
|
|
|
|
while (port->rport_task) {
|
|
if (port->rport_task == RPORT_ADD) {
|
|
port->rport_task = RPORT_NONE;
|
|
zfcp_scsi_rport_register(port);
|
|
} else {
|
|
port->rport_task = RPORT_NONE;
|
|
zfcp_scsi_rport_block(port);
|
|
}
|
|
}
|
|
|
|
put_device(&port->dev);
|
|
}
|
|
|
|
/**
|
|
* zfcp_scsi_scan - Register LUN with SCSI midlayer
|
|
* @unit: The LUN/unit to register
|
|
*/
|
|
void zfcp_scsi_scan(struct zfcp_unit *unit)
|
|
{
|
|
struct fc_rport *rport = unit->port->rport;
|
|
|
|
if (rport && rport->port_state == FC_PORTSTATE_ONLINE)
|
|
scsi_scan_target(&rport->dev, 0, rport->scsi_target_id,
|
|
scsilun_to_int((struct scsi_lun *)
|
|
&unit->fcp_lun), 0);
|
|
}
|
|
|
|
void zfcp_scsi_scan_work(struct work_struct *work)
|
|
{
|
|
struct zfcp_unit *unit = container_of(work, struct zfcp_unit,
|
|
scsi_work);
|
|
|
|
zfcp_scsi_scan(unit);
|
|
put_device(&unit->dev);
|
|
}
|
|
|
|
struct fc_function_template zfcp_transport_functions = {
|
|
.show_starget_port_id = 1,
|
|
.show_starget_port_name = 1,
|
|
.show_starget_node_name = 1,
|
|
.show_rport_supported_classes = 1,
|
|
.show_rport_maxframe_size = 1,
|
|
.show_rport_dev_loss_tmo = 1,
|
|
.show_host_node_name = 1,
|
|
.show_host_port_name = 1,
|
|
.show_host_permanent_port_name = 1,
|
|
.show_host_supported_classes = 1,
|
|
.show_host_supported_fc4s = 1,
|
|
.show_host_supported_speeds = 1,
|
|
.show_host_maxframe_size = 1,
|
|
.show_host_serial_number = 1,
|
|
.get_fc_host_stats = zfcp_get_fc_host_stats,
|
|
.reset_fc_host_stats = zfcp_reset_fc_host_stats,
|
|
.set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
|
|
.get_host_port_state = zfcp_get_host_port_state,
|
|
.terminate_rport_io = zfcp_scsi_terminate_rport_io,
|
|
.show_host_port_state = 1,
|
|
.show_host_active_fc4s = 1,
|
|
.bsg_request = zfcp_fc_exec_bsg_job,
|
|
.bsg_timeout = zfcp_fc_timeout_bsg_job,
|
|
/* no functions registered for following dynamic attributes but
|
|
directly set by LLDD */
|
|
.show_host_port_type = 1,
|
|
.show_host_speed = 1,
|
|
.show_host_port_id = 1,
|
|
.disable_target_scan = 1,
|
|
.dd_bsg_size = sizeof(struct zfcp_fsf_ct_els),
|
|
};
|
|
|
|
struct zfcp_data zfcp_data = {
|
|
.scsi_host_template = {
|
|
.name = "zfcp",
|
|
.module = THIS_MODULE,
|
|
.proc_name = "zfcp",
|
|
.change_queue_depth = zfcp_scsi_change_queue_depth,
|
|
.slave_alloc = zfcp_scsi_slave_alloc,
|
|
.slave_configure = zfcp_scsi_slave_configure,
|
|
.slave_destroy = zfcp_scsi_slave_destroy,
|
|
.queuecommand = zfcp_scsi_queuecommand,
|
|
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
|
|
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
|
|
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
|
|
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
|
|
.can_queue = 4096,
|
|
.this_id = -1,
|
|
.sg_tablesize = ZFCP_FSF_MAX_SBALES_PER_REQ,
|
|
.cmd_per_lun = 1,
|
|
.use_clustering = 1,
|
|
.sdev_attrs = zfcp_sysfs_sdev_attrs,
|
|
.max_sectors = (ZFCP_FSF_MAX_SBALES_PER_REQ * 8),
|
|
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
|
|
.shost_attrs = zfcp_sysfs_shost_attrs,
|
|
},
|
|
};
|