Commit 91ca7b01 authored by Andrew Vasquez's avatar Andrew Vasquez Committed by James Bottomley
Browse files

[SCSI] Add an 'Issue LIP' device attribute in fc_transport class



Ok, here's a patch to add such a common API for fc transport users.
Relevant LLD changes (lpfc and qla2xxx) also present.
Signed-off-by: default avatarJames Bottomley <James.Bottomley@SteelEye.com>
parent f9a2d2e0
......@@ -200,19 +200,13 @@ lpfc_num_discovered_ports_show(struct class_device *cdev, char *buf)
}
static ssize_t
lpfc_issue_lip (struct class_device *cdev, const char *buf, size_t count)
static int
lpfc_issue_lip(struct Scsi_Host *host)
{
struct Scsi_Host *host = class_to_shost(cdev);
struct lpfc_hba *phba = (struct lpfc_hba *) host->hostdata[0];
int val = 0;
LPFC_MBOXQ_t *pmboxq;
int mbxstatus = MBXERR_ERROR;
if ((sscanf(buf, "%d", &val) != 1) ||
(val != 1))
return -EINVAL;
if ((phba->fc_flag & FC_OFFLINE_MODE) ||
(phba->hba_state != LPFC_HBA_READY))
return -EPERM;
......@@ -234,7 +228,7 @@ lpfc_issue_lip (struct class_device *cdev, const char *buf, size_t count)
if (mbxstatus == MBXERR_ERROR)
return -EIO;
return strlen(buf);
return 0;
}
static ssize_t
......@@ -364,7 +358,6 @@ static CLASS_DEVICE_ATTR(lpfc_drvr_version, S_IRUGO, lpfc_drvr_version_show,
NULL);
static CLASS_DEVICE_ATTR(management_version, S_IRUGO, management_version_show,
NULL);
static CLASS_DEVICE_ATTR(issue_lip, S_IWUSR, NULL, lpfc_issue_lip);
static CLASS_DEVICE_ATTR(board_online, S_IRUGO | S_IWUSR,
lpfc_board_online_show, lpfc_board_online_store);
......@@ -537,7 +530,6 @@ struct class_device_attribute *lpfc_host_attrs[] = {
&class_device_attr_lpfc_max_luns,
&class_device_attr_nport_evt_cnt,
&class_device_attr_management_version,
&class_device_attr_issue_lip,
&class_device_attr_board_online,
NULL,
};
......@@ -1234,6 +1226,8 @@ struct fc_function_template lpfc_transport_functions = {
.get_starget_port_name = lpfc_get_starget_port_name,
.show_starget_port_name = 1,
.issue_fc_host_lip = lpfc_issue_lip,
};
void
......
......@@ -503,6 +503,15 @@ qla2x00_set_rport_loss_tmo(struct fc_rport *rport, uint32_t timeout)
rport->dev_loss_tmo = ha->port_down_retry_count + 5;
}
static int
qla2x00_issue_lip(struct Scsi_Host *shost)
{
scsi_qla_host_t *ha = to_qla_host(shost);
set_bit(LOOP_RESET_NEEDED, &ha->dpc_flags);
return 0;
}
struct fc_function_template qla2xxx_transport_functions = {
.show_host_node_name = 1,
......@@ -526,6 +535,7 @@ struct fc_function_template qla2xxx_transport_functions = {
.set_rport_dev_loss_tmo = qla2x00_set_rport_loss_tmo,
.show_rport_dev_loss_tmo = 1,
.issue_fc_host_lip = qla2x00_issue_lip,
};
void
......
......@@ -2141,6 +2141,12 @@ qla2x00_do_dpc(void *data)
ha->host_no));
}
if (test_and_clear_bit(LOOP_RESET_NEEDED, &ha->dpc_flags)) {
DEBUG(printk("scsi(%ld): dpc: sched loop_reset()\n",
ha->host_no));
qla2x00_loop_reset(ha);
}
if (test_and_clear_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) &&
(!(test_and_set_bit(RESET_ACTIVE, &ha->dpc_flags)))) {
......@@ -2442,6 +2448,7 @@ qla2x00_timer(scsi_qla_host_t *ha)
/* Schedule the DPC routine if needed */
if ((test_bit(ISP_ABORT_NEEDED, &ha->dpc_flags) ||
test_bit(LOOP_RESYNC_NEEDED, &ha->dpc_flags) ||
test_bit(LOOP_RESET_NEEDED, &ha->dpc_flags) ||
start_dpc ||
test_bit(LOGIN_RETRY_NEEDED, &ha->dpc_flags) ||
test_bit(RESET_MARKER_NEEDED, &ha->dpc_flags) ||
......
......@@ -220,7 +220,7 @@ static void fc_rport_terminate(struct fc_rport *rport);
*/
#define FC_STARGET_NUM_ATTRS 3
#define FC_RPORT_NUM_ATTRS 9
#define FC_HOST_NUM_ATTRS 15
#define FC_HOST_NUM_ATTRS 16
struct fc_internal {
struct scsi_transport_template t;
......@@ -713,9 +713,11 @@ static FC_CLASS_DEVICE_ATTR(host, field, S_IRUGO, \
count++
#define SETUP_PRIVATE_HOST_ATTRIBUTE_RW(field) \
{ \
i->private_host_attrs[count] = class_device_attr_host_##field; \
i->host_attrs[count] = &i->private_host_attrs[count]; \
count++
count++; \
}
/* Fixed Host Attributes */
......@@ -853,6 +855,26 @@ static FC_CLASS_DEVICE_ATTR(host, tgtid_bind_type, S_IRUGO | S_IWUSR,
show_fc_private_host_tgtid_bind_type,
store_fc_private_host_tgtid_bind_type);
static ssize_t
store_fc_private_host_issue_lip(struct class_device *cdev,
const char *buf, size_t count)
{
struct Scsi_Host *shost = transport_class_to_shost(cdev);
struct fc_internal *i = to_fc_internal(shost->transportt);
int ret;
/* ignore any data value written to the attribute */
if (i->f->issue_fc_host_lip) {
ret = i->f->issue_fc_host_lip(shost);
return ret ? ret: count;
}
return -ENOENT;
}
static FC_CLASS_DEVICE_ATTR(host, issue_lip, S_IWUSR, NULL,
store_fc_private_host_issue_lip);
/*
* Host Statistics Management
*/
......@@ -1119,6 +1141,8 @@ fc_attach_transport(struct fc_function_template *ft)
/* Transport-managed attributes */
SETUP_PRIVATE_HOST_ATTRIBUTE_RW(tgtid_bind_type);
if (ft->issue_fc_host_lip)
SETUP_PRIVATE_HOST_ATTRIBUTE_RW(issue_lip);
BUG_ON(count > FC_HOST_NUM_ATTRS);
......
......@@ -384,6 +384,8 @@ struct fc_function_template {
struct fc_host_statistics * (*get_fc_host_stats)(struct Scsi_Host *);
void (*reset_fc_host_stats)(struct Scsi_Host *);
int (*issue_fc_host_lip)(struct Scsi_Host *);
/* allocation lengths for host-specific data */
u32 dd_fcrport_size;
......
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