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lpfc: Add support for XLane LUN priority

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Add support for XLane LUN priority

Signed-off-by: Dick Kennedy <dick.kennedy@broadcom.com>
Signed-off-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
James Smart
2016-07-06 12:36:05 -07:00
committed by Martin K. Petersen
parent 5b1993dedf
commit c92c841cc7
7 changed files with 104 additions and 20 deletions
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89
drivers/scsi/lpfc/lpfc_attr.c
View File

@@ -2400,6 +2400,69 @@ lpfc_oas_tgt_store(struct device *dev, struct device_attribute *attr,
static DEVICE_ATTR(lpfc_xlane_tgt, S_IRUGO | S_IWUSR,
lpfc_oas_tgt_show, lpfc_oas_tgt_store);
/**
* lpfc_oas_priority_show - Return wwpn of target whose luns maybe enabled for
* Optimized Access Storage (OAS) operations.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: buffer for passing information.
*
* Returns:
* value of count
**/
static ssize_t
lpfc_oas_priority_show(struct device *dev, struct device_attribute *attr,
char *buf)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
return snprintf(buf, PAGE_SIZE, "%d\n", phba->cfg_oas_priority);
}
/**
* lpfc_oas_priority_store - Store wwpn of target whose luns maybe enabled for
* Optimized Access Storage (OAS) operations.
* @dev: class device that is converted into a Scsi_host.
* @attr: device attribute, not used.
* @buf: buffer for passing information.
* @count: Size of the data buffer.
*
* Returns:
* -EINVAL count is invalid, invalid wwpn byte invalid
* -EPERM oas is not supported by hba
* value of count on success
**/
static ssize_t
lpfc_oas_priority_store(struct device *dev, struct device_attribute *attr,
const char *buf, size_t count)
{
struct Scsi_Host *shost = class_to_shost(dev);
struct lpfc_hba *phba = ((struct lpfc_vport *)shost->hostdata)->phba;
unsigned int cnt = count;
unsigned long val;
int ret;
if (!phba->cfg_fof)
return -EPERM;
/* count may include a LF at end of string */
if (buf[cnt-1] == '\n')
cnt--;
ret = kstrtoul(buf, 0, &val);
if (ret || (val > 0x7f))
return -EINVAL;
if (val)
phba->cfg_oas_priority = (uint8_t)val;
else
phba->cfg_oas_priority = phba->cfg_XLanePriority;
return count;
}
static DEVICE_ATTR(lpfc_xlane_priority, S_IRUGO | S_IWUSR,
lpfc_oas_priority_show, lpfc_oas_priority_store);
/**
* lpfc_oas_vpt_show - Return wwpn of vport whose targets maybe enabled
* for Optimized Access Storage (OAS) operations.
@@ -2462,6 +2525,7 @@ lpfc_oas_vpt_store(struct device *dev, struct device_attribute *attr,
else
phba->cfg_oas_flags &= ~OAS_FIND_ANY_VPORT;
phba->cfg_oas_flags &= ~OAS_LUN_VALID;
phba->cfg_oas_priority = phba->cfg_XLanePriority;
phba->sli4_hba.oas_next_lun = FIND_FIRST_OAS_LUN;
return count;
}
@@ -2524,7 +2588,6 @@ lpfc_oas_lun_state_store(struct device *dev, struct device_attribute *attr,
return -EINVAL;
phba->cfg_oas_lun_state = val;
return strlen(buf);
}
static DEVICE_ATTR(lpfc_xlane_lun_state, S_IRUGO | S_IWUSR,
@@ -2572,7 +2635,8 @@ static DEVICE_ATTR(lpfc_xlane_lun_status, S_IRUGO,
*/
static size_t
lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
uint8_t tgt_wwpn[], uint64_t lun, uint32_t oas_state)
uint8_t tgt_wwpn[], uint64_t lun,
uint32_t oas_state, uint8_t pri)
{
int rc = 0;
@@ -2582,7 +2646,8 @@ lpfc_oas_lun_state_set(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
if (oas_state) {
if (!lpfc_enable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
(struct lpfc_name *)tgt_wwpn, lun))
(struct lpfc_name *)tgt_wwpn,
lun, pri))
rc = -ENOMEM;
} else {
lpfc_disable_oas_lun(phba, (struct lpfc_name *)vpt_wwpn,
@@ -2648,13 +2713,13 @@ lpfc_oas_lun_get_next(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
static ssize_t
lpfc_oas_lun_state_change(struct lpfc_hba *phba, uint8_t vpt_wwpn[],
uint8_t tgt_wwpn[], uint64_t lun,
uint32_t oas_state)
uint32_t oas_state, uint8_t pri)
{
int rc;
rc = lpfc_oas_lun_state_set(phba, vpt_wwpn, tgt_wwpn, lun,
oas_state);
oas_state, pri);
return rc;
}
@@ -2744,16 +2809,16 @@ lpfc_oas_lun_store(struct device *dev, struct device_attribute *attr,
return -EINVAL;
lpfc_printf_log(phba, KERN_INFO, LOG_INIT,
"3372 Try to set vport 0x%llx target 0x%llx lun:%lld "
"with oas set to %d\n",
"3372 Try to set vport 0x%llx target 0x%llx lun:0x%llx "
"priority 0x%x with oas state %d\n",
wwn_to_u64(phba->cfg_oas_vpt_wwpn),
wwn_to_u64(phba->cfg_oas_tgt_wwpn), scsi_lun,
phba->cfg_oas_lun_state);
phba->cfg_oas_priority, phba->cfg_oas_lun_state);
rc = lpfc_oas_lun_state_change(phba, phba->cfg_oas_vpt_wwpn,
phba->cfg_oas_tgt_wwpn, scsi_lun,
phba->cfg_oas_lun_state);
phba->cfg_oas_tgt_wwpn, scsi_lun,
phba->cfg_oas_lun_state,
phba->cfg_oas_priority);
if (rc)
return rc;
@@ -4865,6 +4930,7 @@ struct device_attribute *lpfc_hba_attrs[] = {
&dev_attr_lpfc_xlane_vpt,
&dev_attr_lpfc_xlane_lun_state,
&dev_attr_lpfc_xlane_lun_status,
&dev_attr_lpfc_xlane_priority,
&dev_attr_lpfc_sg_seg_cnt,
&dev_attr_lpfc_max_scsicmpl_time,
&dev_attr_lpfc_stat_data_ctrl,
@@ -5858,6 +5924,7 @@ lpfc_get_cfgparam(struct lpfc_hba *phba)
phba->cfg_oas_lun_state = 0;
phba->cfg_oas_lun_status = 0;
phba->cfg_oas_flags = 0;
phba->cfg_oas_priority = 0;
lpfc_enable_bg_init(phba, lpfc_enable_bg);
if (phba->sli_rev == LPFC_SLI_REV4)
phba->cfg_poll = 0;