*/
static DEVICE_ATTR_RO(lpfc_static_vport);
-/**
- * lpfc_stat_data_ctrl_store - write call back for lpfc_stat_data_ctrl sysfs file
- * @dev: Pointer to class device.
- * @attr: Unused.
- * @buf: Data buffer.
- * @count: Size of the data buffer.
- *
- * This function get called when a user write to the lpfc_stat_data_ctrl
- * sysfs file. This function parse the command written to the sysfs file
- * and take appropriate action. These commands are used for controlling
- * driver statistical data collection.
- * Following are the command this function handles.
- *
- * setbucket <bucket_type> <base> <step>
- * = Set the latency buckets.
- * destroybucket = destroy all the buckets.
- * start = start data collection
- * stop = stop data collection
- * reset = reset the collected data
- **/
-static ssize_t
-lpfc_stat_data_ctrl_store(struct device *dev, struct device_attribute *attr,
- const char *buf, size_t count)
-{
- struct Scsi_Host *shost = class_to_shost(dev);
- struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
- struct lpfc_hba *phba = vport->phba;
-#define LPFC_MAX_DATA_CTRL_LEN 1024
- static char bucket_data[LPFC_MAX_DATA_CTRL_LEN];
- unsigned long i;
- char *str_ptr, *token;
- struct lpfc_vport **vports;
- struct Scsi_Host *v_shost;
- char *bucket_type_str, *base_str, *step_str;
- unsigned long base, step, bucket_type;
-
- if (!strncmp(buf, "setbucket", strlen("setbucket"))) {
- if (strlen(buf) > (LPFC_MAX_DATA_CTRL_LEN - 1))
- return -EINVAL;
-
- strncpy(bucket_data, buf, LPFC_MAX_DATA_CTRL_LEN);
- str_ptr = &bucket_data[0];
- /* Ignore this token - this is command token */
- token = strsep(&str_ptr, "\t ");
- if (!token)
- return -EINVAL;
-
- bucket_type_str = strsep(&str_ptr, "\t ");
- if (!bucket_type_str)
- return -EINVAL;
-
- if (!strncmp(bucket_type_str, "linear", strlen("linear")))
- bucket_type = LPFC_LINEAR_BUCKET;
- else if (!strncmp(bucket_type_str, "power2", strlen("power2")))
- bucket_type = LPFC_POWER2_BUCKET;
- else
- return -EINVAL;
-
- base_str = strsep(&str_ptr, "\t ");
- if (!base_str)
- return -EINVAL;
- base = simple_strtoul(base_str, NULL, 0);
-
- step_str = strsep(&str_ptr, "\t ");
- if (!step_str)
- return -EINVAL;
- step = simple_strtoul(step_str, NULL, 0);
- if (!step)
- return -EINVAL;
-
- /* Block the data collection for every vport */
- vports = lpfc_create_vport_work_array(phba);
- if (vports == NULL)
- return -ENOMEM;
-
- for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
- v_shost = lpfc_shost_from_vport(vports[i]);
- spin_lock_irq(v_shost->host_lock);
- /* Block and reset data collection */
- vports[i]->stat_data_blocked = 1;
- if (vports[i]->stat_data_enabled)
- lpfc_vport_reset_stat_data(vports[i]);
- spin_unlock_irq(v_shost->host_lock);
- }
-
- /* Set the bucket attributes */
- phba->bucket_type = bucket_type;
- phba->bucket_base = base;
- phba->bucket_step = step;
-
- for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
- v_shost = lpfc_shost_from_vport(vports[i]);
-
- /* Unblock data collection */
- spin_lock_irq(v_shost->host_lock);
- vports[i]->stat_data_blocked = 0;
- spin_unlock_irq(v_shost->host_lock);
- }
- lpfc_destroy_vport_work_array(phba, vports);
- return strlen(buf);
- }
-
- if (!strncmp(buf, "destroybucket", strlen("destroybucket"))) {
- vports = lpfc_create_vport_work_array(phba);
- if (vports == NULL)
- return -ENOMEM;
-
- for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) {
- v_shost = lpfc_shost_from_vport(vports[i]);
- spin_lock_irq(shost->host_lock);
- vports[i]->stat_data_blocked = 1;
- lpfc_free_bucket(vport);
- vport->stat_data_enabled = 0;
- vports[i]->stat_data_blocked = 0;
- spin_unlock_irq(shost->host_lock);
- }
- lpfc_destroy_vport_work_array(phba, vports);
- phba->bucket_type = LPFC_NO_BUCKET;
- phba->bucket_base = 0;
- phba->bucket_step = 0;
- return strlen(buf);
- }
-
- if (!strncmp(buf, "start", strlen("start"))) {
- /* If no buckets configured return error */
- if (phba->bucket_type == LPFC_NO_BUCKET)
- return -EINVAL;
- spin_lock_irq(shost->host_lock);
- if (vport->stat_data_enabled) {
- spin_unlock_irq(shost->host_lock);
- return strlen(buf);
- }
- lpfc_alloc_bucket(vport);
- vport->stat_data_enabled = 1;
- spin_unlock_irq(shost->host_lock);
- return strlen(buf);
- }
-
- if (!strncmp(buf, "stop", strlen("stop"))) {
- spin_lock_irq(shost->host_lock);
- if (vport->stat_data_enabled == 0) {
- spin_unlock_irq(shost->host_lock);
- return strlen(buf);
- }
- lpfc_free_bucket(vport);
- vport->stat_data_enabled = 0;
- spin_unlock_irq(shost->host_lock);
- return strlen(buf);
- }
-
- if (!strncmp(buf, "reset", strlen("reset"))) {
- if ((phba->bucket_type == LPFC_NO_BUCKET)
- || !vport->stat_data_enabled)
- return strlen(buf);
- spin_lock_irq(shost->host_lock);
- vport->stat_data_blocked = 1;
- lpfc_vport_reset_stat_data(vport);
- vport->stat_data_blocked = 0;
- spin_unlock_irq(shost->host_lock);
- return strlen(buf);
- }
- return -EINVAL;
-}
-
-
-/**
- * lpfc_stat_data_ctrl_show - Read function for lpfc_stat_data_ctrl sysfs file
- * @dev: Pointer to class device.
- * @attr: Unused.
- * @buf: Data buffer.
- *
- * This function is the read call back function for
- * lpfc_stat_data_ctrl sysfs file. This function report the
- * current statistical data collection state.
- **/
-static ssize_t
-lpfc_stat_data_ctrl_show(struct device *dev, struct device_attribute *attr,
- char *buf)
-{
- struct Scsi_Host *shost = class_to_shost(dev);
- struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
- struct lpfc_hba *phba = vport->phba;
- int index = 0;
- int i;
- char *bucket_type;
- unsigned long bucket_value;
-
- switch (phba->bucket_type) {
- case LPFC_LINEAR_BUCKET:
- bucket_type = "linear";
- break;
- case LPFC_POWER2_BUCKET:
- bucket_type = "power2";
- break;
- default:
- bucket_type = "No Bucket";
- break;
- }
-
- sprintf(&buf[index], "Statistical Data enabled :%d, "
- "blocked :%d, Bucket type :%s, Bucket base :%d,"
- " Bucket step :%d\nLatency Ranges :",
- vport->stat_data_enabled, vport->stat_data_blocked,
- bucket_type, phba->bucket_base, phba->bucket_step);
- index = strlen(buf);
- if (phba->bucket_type != LPFC_NO_BUCKET) {
- for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
- if (phba->bucket_type == LPFC_LINEAR_BUCKET)
- bucket_value = phba->bucket_base +
- phba->bucket_step * i;
- else
- bucket_value = phba->bucket_base +
- (1 << i) * phba->bucket_step;
-
- if (index + 10 > PAGE_SIZE)
- break;
- sprintf(&buf[index], "%08ld ", bucket_value);
- index = strlen(buf);
- }
- }
- sprintf(&buf[index], "\n");
- return strlen(buf);
-}
-
-/*
- * Sysfs attribute to control the statistical data collection.
- */
-static DEVICE_ATTR_RW(lpfc_stat_data_ctrl);
-
-/*
- * lpfc_drvr_stat_data: sysfs attr to get driver statistical data.
- */
-
-/*
- * Each Bucket takes 11 characters and 1 new line + 17 bytes WWN
- * for each target.
- */
-#define STAT_DATA_SIZE_PER_TARGET(NUM_BUCKETS) ((NUM_BUCKETS) * 11 + 18)
-#define MAX_STAT_DATA_SIZE_PER_TARGET \
- STAT_DATA_SIZE_PER_TARGET(LPFC_MAX_BUCKET_COUNT)
-
-
-/**
- * sysfs_drvr_stat_data_read - Read function for lpfc_drvr_stat_data attribute
- * @filp: sysfs file
- * @kobj: Pointer to the kernel object
- * @bin_attr: Attribute object
- * @buf: Buffer pointer
- * @off: File offset
- * @count: Buffer size
- *
- * This function is the read call back function for lpfc_drvr_stat_data
- * sysfs file. This function export the statistical data to user
- * applications.
- **/
-static ssize_t
-sysfs_drvr_stat_data_read(struct file *filp, struct kobject *kobj,
- struct bin_attribute *bin_attr,
- char *buf, loff_t off, size_t count)
-{
- struct device *dev = container_of(kobj, struct device,
- kobj);
- struct Scsi_Host *shost = class_to_shost(dev);
- struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata;
- struct lpfc_hba *phba = vport->phba;
- int i = 0, index = 0;
- unsigned long nport_index;
- struct lpfc_nodelist *ndlp = NULL;
- nport_index = (unsigned long)off /
- MAX_STAT_DATA_SIZE_PER_TARGET;
-
- if (!vport->stat_data_enabled || vport->stat_data_blocked
- || (phba->bucket_type == LPFC_NO_BUCKET))
- return 0;
-
- spin_lock_irq(shost->host_lock);
- list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) {
- if (!ndlp->lat_data)
- continue;
-
- if (nport_index > 0) {
- nport_index--;
- continue;
- }
-
- if ((index + MAX_STAT_DATA_SIZE_PER_TARGET)
- > count)
- break;
-
- if (!ndlp->lat_data)
- continue;
-
- /* Print the WWN */
- sprintf(&buf[index], "%02x%02x%02x%02x%02x%02x%02x%02x:",
- ndlp->nlp_portname.u.wwn[0],
- ndlp->nlp_portname.u.wwn[1],
- ndlp->nlp_portname.u.wwn[2],
- ndlp->nlp_portname.u.wwn[3],
- ndlp->nlp_portname.u.wwn[4],
- ndlp->nlp_portname.u.wwn[5],
- ndlp->nlp_portname.u.wwn[6],
- ndlp->nlp_portname.u.wwn[7]);
-
- index = strlen(buf);
-
- for (i = 0; i < LPFC_MAX_BUCKET_COUNT; i++) {
- sprintf(&buf[index], "%010u,",
- ndlp->lat_data[i].cmd_count);
- index = strlen(buf);
- }
- sprintf(&buf[index], "\n");
- index = strlen(buf);
- }
- spin_unlock_irq(shost->host_lock);
- return index;
-}
-
-static struct bin_attribute sysfs_drvr_stat_data_attr = {
- .attr = {
- .name = "lpfc_drvr_stat_data",
- .mode = S_IRUSR,
- },
- .size = LPFC_MAX_TARGET * MAX_STAT_DATA_SIZE_PER_TARGET,
- .read = sysfs_drvr_stat_data_read,
- .write = NULL,
-};
-
/*
# lpfc_link_speed: Link speed selection for initializing the Fibre Channel
# connection.
&dev_attr_lpfc_xlane_priority.attr,
&dev_attr_lpfc_sg_seg_cnt.attr,
&dev_attr_lpfc_max_scsicmpl_time.attr,
- &dev_attr_lpfc_stat_data_ctrl.attr,
&dev_attr_lpfc_aer_support.attr,
&dev_attr_lpfc_aer_state_cleanup.attr,
&dev_attr_lpfc_sriov_nr_virtfn.attr,
&dev_attr_npiv_info.attr,
&dev_attr_lpfc_enable_da_id.attr,
&dev_attr_lpfc_max_scsicmpl_time.attr,
- &dev_attr_lpfc_stat_data_ctrl.attr,
&dev_attr_lpfc_static_vport.attr,
&dev_attr_cmf_info.attr,
NULL,
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
int error;
- error = sysfs_create_bin_file(&shost->shost_dev.kobj,
- &sysfs_drvr_stat_data_attr);
-
/* Virtual ports do not need ctrl_reg and mbox */
- if (error || vport->port_type == LPFC_NPIV_PORT)
- goto out;
+ if (vport->port_type == LPFC_NPIV_PORT)
+ return 0;
error = sysfs_create_bin_file(&shost->shost_dev.kobj,
&sysfs_ctlreg_attr);
if (error)
- goto out_remove_stat_attr;
+ goto out;
error = sysfs_create_bin_file(&shost->shost_dev.kobj,
&sysfs_mbox_attr);
return 0;
out_remove_ctlreg_attr:
sysfs_remove_bin_file(&shost->shost_dev.kobj, &sysfs_ctlreg_attr);
-out_remove_stat_attr:
- sysfs_remove_bin_file(&shost->shost_dev.kobj,
- &sysfs_drvr_stat_data_attr);
out:
return error;
}
lpfc_free_sysfs_attr(struct lpfc_vport *vport)
{
struct Scsi_Host *shost = lpfc_shost_from_vport(vport);
- sysfs_remove_bin_file(&shost->shost_dev.kobj,
- &sysfs_drvr_stat_data_attr);
+
/* Virtual ports do not need ctrl_reg and mbox */
if (vport->port_type == LPFC_NPIV_PORT)
return;
projects / linux.git / commitdiff