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scsi: fnic: Refactor code in fnic probe to initialize SCSI layer
Refactor code from fnic probe into a different function so that scsi layer initialization code is grouped together. Also, add log messages for better debugging. Link: https://lore.kernel.org/r/20220707205155.692688-1-kartilak@cisco.com Co-developed-by: Gian Carlo Boffa <gcboffa@cisco.com> Signed-off-by: Gian Carlo Boffa <gcboffa@cisco.com> Co-developed-by: Arulprabhu Ponnusamy <arulponn@cisco.com> Signed-off-by: Arulprabhu Ponnusamy <arulponn@cisco.com> Signed-off-by: Karan Tilak Kumar <kartilak@cisco.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
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@ -556,6 +556,39 @@ static void fnic_set_vlan(struct fnic *fnic, u16 vlan_id)
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vnic_dev_set_default_vlan(fnic->vdev, vlan_id);
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}
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static int fnic_scsi_drv_init(struct fnic *fnic)
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{
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struct Scsi_Host *host = fnic->lport->host;
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/* Configure maximum outstanding IO reqs*/
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if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD)
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host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
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max_t(u32, FNIC_MIN_IO_REQ,
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fnic->config.io_throttle_count));
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fnic->fnic_max_tag_id = host->can_queue;
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host->max_lun = fnic->config.luns_per_tgt;
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host->max_id = FNIC_MAX_FCP_TARGET;
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host->max_cmd_len = FCOE_MAX_CMD_LEN;
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host->nr_hw_queues = fnic->wq_copy_count;
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if (host->nr_hw_queues > 1)
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shost_printk(KERN_ERR, host,
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"fnic: blk-mq is not supported");
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host->nr_hw_queues = fnic->wq_copy_count = 1;
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shost_printk(KERN_INFO, host,
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"fnic: can_queue: %d max_lun: %llu",
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host->can_queue, host->max_lun);
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shost_printk(KERN_INFO, host,
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"fnic: max_id: %d max_cmd_len: %d nr_hw_queues: %d",
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host->max_id, host->max_cmd_len, host->nr_hw_queues);
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return 0;
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}
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static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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{
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struct Scsi_Host *host;
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@ -696,17 +729,7 @@ static int fnic_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
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goto err_out_dev_close;
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}
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/* Configure Maximum Outstanding IO reqs*/
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if (fnic->config.io_throttle_count != FNIC_UCSM_DFLT_THROTTLE_CNT_BLD) {
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host->can_queue = min_t(u32, FNIC_MAX_IO_REQ,
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max_t(u32, FNIC_MIN_IO_REQ,
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fnic->config.io_throttle_count));
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}
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fnic->fnic_max_tag_id = host->can_queue;
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host->max_lun = fnic->config.luns_per_tgt;
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host->max_id = FNIC_MAX_FCP_TARGET;
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host->max_cmd_len = FCOE_MAX_CMD_LEN;
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fnic_scsi_drv_init(fnic);
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fnic_get_res_counts(fnic);
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