}
/**
- * lpfc_update_stats: Update statistical data for the command completion.
+ * lpfc_update_stats - Update statistical data for the command completion
* @phba: Pointer to HBA object.
* @lpfc_cmd: lpfc scsi command object pointer.
*
}
/**
- * lpfc_send_sdev_queuedepth_change_event: Posts a queuedepth change
- * event.
+ * lpfc_send_sdev_queuedepth_change_event - Posts a queuedepth change event
* @phba: Pointer to HBA context object.
* @vport: Pointer to vport object.
* @ndlp: Pointer to FC node associated with the target.
}
/**
- * lpfc_rampdown_queue_depth: Post RAMP_DOWN_QUEUE event to worker thread.
+ * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread
* @phba: The Hba for which this call is being executed.
*
* This routine is called when there is resource error in driver or firmware.
}
/**
- * lpfc_rampup_queue_depth: Post RAMP_UP_QUEUE event for worker thread.
+ * lpfc_rampup_queue_depth - Post RAMP_UP_QUEUE event for worker thread
* @phba: The Hba for which this call is being executed.
*
* This routine post WORKER_RAMP_UP_QUEUE event for @phba vport. This routine
**/
static inline void
lpfc_rampup_queue_depth(struct lpfc_vport *vport,
- struct scsi_device *sdev)
+ uint32_t queue_depth)
{
unsigned long flags;
struct lpfc_hba *phba = vport->phba;
uint32_t evt_posted;
atomic_inc(&phba->num_cmd_success);
- if (vport->cfg_lun_queue_depth <= sdev->queue_depth)
+ if (vport->cfg_lun_queue_depth <= queue_depth)
return;
spin_lock_irqsave(&phba->hbalock, flags);
if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) ||
}
/**
- * lpfc_ramp_down_queue_handler: WORKER_RAMP_DOWN_QUEUE event handler.
+ * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler
* @phba: The Hba for which this call is being executed.
*
* This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker
}
/**
- * lpfc_ramp_up_queue_handler: WORKER_RAMP_UP_QUEUE event handler.
+ * lpfc_ramp_up_queue_handler - WORKER_RAMP_UP_QUEUE event handler
* @phba: The Hba for which this call is being executed.
*
* This routine is called to process WORKER_RAMP_UP_QUEUE event for worker
}
/**
- * lpfc_scsi_dev_block: set all scsi hosts to block state.
+ * lpfc_scsi_dev_block - set all scsi hosts to block state
* @phba: Pointer to HBA context object.
*
* This function walks vport list and set each SCSI host to block state
}
/**
- * lpfc_new_scsi_buf: Scsi buffer allocator.
+ * lpfc_new_scsi_buf - Scsi buffer allocator
* @vport: The virtual port for which this call being executed.
*
* This routine allocates a scsi buffer, which contains all the necessary
}
/**
- * lpfc_get_scsi_buf: Get a scsi buffer from lpfc_scsi_buf_list list of Hba.
+ * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list list of Hba
* @phba: The Hba for which this call is being executed.
*
* This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list
}
/**
- * lpfc_release_scsi_buf: Return a scsi buffer back to hba lpfc_scsi_buf_list list.
+ * lpfc_release_scsi_buf - Return a scsi buffer back to hba's lpfc_scsi_buf_list
* @phba: The Hba for which this call is being executed.
* @psb: The scsi buffer which is being released.
*
}
/**
- * lpfc_scsi_prep_dma_buf: Routine to do DMA mapping for scsi buffer.
+ * lpfc_scsi_prep_dma_buf - Routine to do DMA mapping for scsi buffer
* @phba: The Hba for which this call is being executed.
* @lpfc_cmd: The scsi buffer which is going to be mapped.
*
* Due to difference in data length between DIF/non-DIF paths,
* we need to set word 4 of IOCB here
*/
- iocb_cmd->un.fcpi.fcpi_parm = le32_to_cpu(scsi_bufflen(scsi_cmnd));
+ iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd);
return 0;
}
/**
* lpfc_get_cmd_dif_parms - Extract DIF parameters from SCSI command
* @sc: in: SCSI command
- * @apptagmask out: app tag mask
- * @apptagval out: app tag value
- * @reftag out: ref tag (reference tag)
+ * @apptagmask: out: app tag mask
+ * @apptagval: out: app tag value
+ * @reftag: out: ref tag (reference tag)
*
* Description:
* Extract DIF paramters from the command if possible. Otherwise,
}
/**
- * lpfc_send_scsi_error_event: Posts an event when there is SCSI error.
+ * lpfc_send_scsi_error_event - Posts an event when there is SCSI error
* @phba: Pointer to hba context object.
* @vport: Pointer to vport object.
* @lpfc_cmd: Pointer to lpfc scsi command which reported the error.
}
/**
- * lpfc_scsi_unprep_dma_buf: Routine to un-map DMA mapping of scatter gather.
+ * lpfc_scsi_unprep_dma_buf - Routine to un-map DMA mapping of scatter gather
* @phba: The Hba for which this call is being executed.
* @psb: The scsi buffer which is going to be un-mapped.
*
}
/**
- * lpfc_handler_fcp_err: FCP response handler.
+ * lpfc_handler_fcp_err - FCP response handler
* @vport: The virtual port for which this call is being executed.
* @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
* @rsp_iocb: The response IOCB which contains FCP error.
}
/**
- * lpfc_scsi_cmd_iocb_cmpl: Scsi cmnd IOCB completion routine.
+ * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine
* @phba: The Hba for which this call is being executed.
* @pIocbIn: The command IOCBQ for the scsi cmnd.
* @pIocbOut: The response IOCBQ for the scsi cmnd .
struct lpfc_nodelist *pnode = rdata->pnode;
struct scsi_cmnd *cmd = lpfc_cmd->pCmd;
int result;
- struct scsi_device *sdev, *tmp_sdev;
+ struct scsi_device *tmp_sdev;
int depth = 0;
unsigned long flags;
struct lpfc_fast_path_event *fast_path_evt;
+ struct Scsi_Host *shost = cmd->device->host;
+ uint32_t queue_depth, scsi_id;
lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4];
lpfc_cmd->status = pIocbOut->iocb.ulpStatus;
lpfc_update_stats(phba, lpfc_cmd);
result = cmd->result;
- sdev = cmd->device;
if (vport->cfg_max_scsicmpl_time &&
time_after(jiffies, lpfc_cmd->start_time +
msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) {
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
if (pnode && NLP_CHK_NODE_ACT(pnode)) {
if (pnode->cmd_qdepth >
atomic_read(&pnode->cmd_pending) &&
pnode->last_change_time = jiffies;
}
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
} else if (pnode && NLP_CHK_NODE_ACT(pnode)) {
if ((pnode->cmd_qdepth < LPFC_MAX_TGT_QDEPTH) &&
time_after(jiffies, pnode->last_change_time +
msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) {
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
pnode->cmd_qdepth += pnode->cmd_qdepth *
LPFC_TGTQ_RAMPUP_PCENT / 100;
if (pnode->cmd_qdepth > LPFC_MAX_TGT_QDEPTH)
pnode->cmd_qdepth = LPFC_MAX_TGT_QDEPTH;
pnode->last_change_time = jiffies;
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
}
}
lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd);
+
+ /* The sdev is not guaranteed to be valid post scsi_done upcall. */
+ queue_depth = cmd->device->queue_depth;
+ scsi_id = cmd->device->id;
cmd->scsi_done(cmd);
if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) {
* If there is a thread waiting for command completion
* wake up the thread.
*/
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
lpfc_cmd->pCmd = NULL;
if (lpfc_cmd->waitq)
wake_up(lpfc_cmd->waitq);
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
lpfc_release_scsi_buf(phba, lpfc_cmd);
return;
}
if (!result)
- lpfc_rampup_queue_depth(vport, sdev);
+ lpfc_rampup_queue_depth(vport, queue_depth);
if (!result && pnode && NLP_CHK_NODE_ACT(pnode) &&
((jiffies - pnode->last_ramp_up_time) >
LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
((jiffies - pnode->last_q_full_time) >
LPFC_Q_RAMP_UP_INTERVAL * HZ) &&
- (vport->cfg_lun_queue_depth > sdev->queue_depth)) {
- shost_for_each_device(tmp_sdev, sdev->host) {
+ (vport->cfg_lun_queue_depth > queue_depth)) {
+ shost_for_each_device(tmp_sdev, shost) {
if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){
- if (tmp_sdev->id != sdev->id)
+ if (tmp_sdev->id != scsi_id)
continue;
if (tmp_sdev->ordered_tags)
scsi_adjust_queue_depth(tmp_sdev,
}
lpfc_send_sdev_queuedepth_change_event(phba, vport, pnode,
0xFFFFFFFF,
- sdev->queue_depth - 1, sdev->queue_depth);
+ queue_depth , queue_depth + 1);
}
/*
NLP_CHK_NODE_ACT(pnode)) {
pnode->last_q_full_time = jiffies;
- shost_for_each_device(tmp_sdev, sdev->host) {
- if (tmp_sdev->id != sdev->id)
+ shost_for_each_device(tmp_sdev, shost) {
+ if (tmp_sdev->id != scsi_id)
continue;
depth = scsi_track_queue_full(tmp_sdev,
tmp_sdev->queue_depth - 1);
* scsi_track_queue_full.
*/
if (depth == -1)
- depth = sdev->host->cmd_per_lun;
+ depth = shost->cmd_per_lun;
if (depth) {
lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP,
* If there is a thread waiting for command completion
* wake up the thread.
*/
- spin_lock_irqsave(sdev->host->host_lock, flags);
+ spin_lock_irqsave(shost->host_lock, flags);
lpfc_cmd->pCmd = NULL;
if (lpfc_cmd->waitq)
wake_up(lpfc_cmd->waitq);
- spin_unlock_irqrestore(sdev->host->host_lock, flags);
+ spin_unlock_irqrestore(shost->host_lock, flags);
lpfc_release_scsi_buf(phba, lpfc_cmd);
}
/**
- * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB.
+ * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB
* @data: A pointer to the immediate command data portion of the IOCB.
* @fcp_cmnd: The FCP Command that is provided by the SCSI layer.
*
}
/**
- * lpfc_scsi_prep_cmnd: Routine to convert scsi cmnd to FCP information unit.
+ * lpfc_scsi_prep_cmnd - Routine to convert scsi cmnd to FCP information unit
* @vport: The virtual port for which this call is being executed.
* @lpfc_cmd: The scsi command which needs to send.
* @pnode: Pointer to lpfc_nodelist.
}
/**
- * lpfc_scsi_prep_task_mgmt_cmnd: Convert scsi TM cmnd to FCP information unit.
+ * lpfc_scsi_prep_task_mgmt_cmnd - Convert scsi TM cmnd to FCP information unit
* @vport: The virtual port for which this call is being executed.
* @lpfc_cmd: Pointer to lpfc_scsi_buf data structure.
* @lun: Logical unit number.
}
/**
- * lpc_taskmgmt_def_cmpl: IOCB completion routine for task management command.
+ * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command
* @phba: The Hba for which this call is being executed.
* @cmdiocbq: Pointer to lpfc_iocbq data structure.
* @rspiocbq: Pointer to lpfc_iocbq data structure.
}
/**
- * lpfc_scsi_tgt_reset: Target reset handler.
+ * lpfc_scsi_tgt_reset - Target reset handler
* @lpfc_cmd: Pointer to lpfc_scsi_buf data structure
* @vport: The virtual port for which this call is being executed.
* @tgt_id: Target ID.
}
/**
- * lpfc_info: Info entry point of scsi_host_template data structure.
+ * lpfc_info - Info entry point of scsi_host_template data structure
* @host: The scsi host for which this call is being executed.
*
* This routine provides module information about hba.
}
/**
- * lpfc_poll_rearm_time: Routine to modify fcp_poll timer of hba.
+ * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba
* @phba: The Hba for which this call is being executed.
*
* This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo.
}
/**
- * lpfc_poll_start_timer: Routine to start fcp_poll_timer of HBA.
+ * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA
* @phba: The Hba for which this call is being executed.
*
* This routine starts the fcp_poll_timer of @phba.
}
/**
- * lpfc_poll_timeout: Restart polling timer.
+ * lpfc_poll_timeout - Restart polling timer
* @ptr: Map to lpfc_hba data structure pointer.
*
* This routine restarts fcp_poll timer, when FCP ring polling is enable
}
/**
- * lpfc_queuecommand: Queuecommand entry point of Scsi Host Templater data
- * structure.
+ * lpfc_queuecommand - scsi_host_template queuecommand entry point
* @cmnd: Pointer to scsi_cmnd data structure.
* @done: Pointer to done routine.
*
}
/**
- * lpfc_block_error_handler: Routine to block error handler.
+ * lpfc_block_error_handler - Routine to block error handler
* @cmnd: Pointer to scsi_cmnd data structure.
*
* This routine blocks execution till fc_rport state is not FC_PORSTAT_BLCOEKD.
}
/**
- * lpfc_abort_handler: Eh_abort_handler entry point of Scsi Host Template data
- *structure.
+ * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point
* @cmnd: Pointer to scsi_cmnd data structure.
*
* This routine aborts @cmnd pending in base driver.
}
/**
- * lpfc_device_reset_handler: eh_device_reset entry point of Scsi Host Template
- *data structure.
+ * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point
* @cmnd: Pointer to scsi_cmnd data structure.
*
* This routine does a device reset by sending a TARGET_RESET task management
*
* Return code :
* 0x2003 - Error
- * 0ex2002 - Success
+ * 0x2002 - Success
**/
static int
lpfc_device_reset_handler(struct scsi_cmnd *cmnd)
}
/**
- * lpfc_bus_reset_handler: eh_bus_reset_handler entry point of Scsi Host
- * Template data structure.
+ * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point
* @cmnd: Pointer to scsi_cmnd data structure.
*
* This routine does target reset to all target on @cmnd->device->host.
}
/**
- * lpfc_slave_alloc: slave_alloc entry point of Scsi Host Template data
- * structure.
+ * lpfc_slave_alloc - scsi_host_template slave_alloc entry point
* @sdev: Pointer to scsi_device.
*
* This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's
}
/**
- * lpfc_slave_configure: slave_configure entry point of Scsi Host Templater data
- * structure.
+ * lpfc_slave_configure - scsi_host_template slave_configure entry point
* @sdev: Pointer to scsi_device.
*
* This routine configures following items
}
/**
- * lpfc_slave_destroy: slave_destroy entry point of SHT data structure.
+ * lpfc_slave_destroy - slave_destroy entry point of SHT data structure
* @sdev: Pointer to scsi_device.
*
* This routine sets @sdev hostatdata filed to null.