@@ -291,6 +291,138 @@ lpfc_cmf_info_show(struct device *dev, struct device_attribute *attr,
return len;
}
+static ssize_t
+lpfc_vmid_info_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;
+ struct lpfc_vmid *vmp;
+ int len = 0, i, j, k, cpu;
+ char hxstr[LPFC_MAX_VMID_SIZE * 3] = {0};
+ struct timespec64 curr_tm;
+ struct lpfc_vmid_priority_range *vr;
+ u64 *lta, rct_acc = 0, max_lta = 0;
+ struct tm tm_val;
+
+ ktime_get_ts64(&curr_tm);
+
+ len += scnprintf(buf + len, PAGE_SIZE - len, "Key 'vmid':\n");
+
+ /* if enabled continue, else return */
+ if (lpfc_is_vmid_enabled(phba)) {
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "lpfc VMID Page: ON\n\n");
+ } else {
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "lpfc VMID Page: OFF\n\n");
+ return len;
+ }
+
+ /* if using priority tagging */
+ if (vport->phba->pport->vmid_flag & LPFC_VMID_TYPE_PRIO) {
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "VMID priority ranges:\n");
+ vr = vport->vmid_priority.vmid_range;
+ for (i = 0; i < vport->vmid_priority.num_descriptors; ++i) {
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "\t[x%x - x%x], qos: x%x\n",
+ vr->low, vr->high, vr->qos);
+ vr++;
+ }
+ }
+
+ for (i = 0; i < phba->cfg_max_vmid; i++) {
+ vmp = &vport->vmid[i];
+ max_lta = 0;
+
+ /* only if the slot is used */
+ if (!(vmp->flag & LPFC_VMID_SLOT_USED) ||
+ !(vmp->flag & LPFC_VMID_REGISTERED))
+ continue;
+
+ /* if using priority tagging */
+ if (vport->phba->pport->vmid_flag & LPFC_VMID_TYPE_PRIO) {
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "VEM ID: %02x:%02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x:%02x:%02x:"
+ "%02x:%02x:%02x:%02x:%02x:%02x\n",
+ vport->lpfc_vmid_host_uuid[0],
+ vport->lpfc_vmid_host_uuid[1],
+ vport->lpfc_vmid_host_uuid[2],
+ vport->lpfc_vmid_host_uuid[3],
+ vport->lpfc_vmid_host_uuid[4],
+ vport->lpfc_vmid_host_uuid[5],
+ vport->lpfc_vmid_host_uuid[6],
+ vport->lpfc_vmid_host_uuid[7],
+ vport->lpfc_vmid_host_uuid[8],
+ vport->lpfc_vmid_host_uuid[9],
+ vport->lpfc_vmid_host_uuid[10],
+ vport->lpfc_vmid_host_uuid[11],
+ vport->lpfc_vmid_host_uuid[12],
+ vport->lpfc_vmid_host_uuid[13],
+ vport->lpfc_vmid_host_uuid[14],
+ vport->lpfc_vmid_host_uuid[15]);
+ }
+
+ /* IO stats */
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "ID00 READs:%llx WRITEs:%llx\n",
+ vmp->io_rd_cnt,
+ vmp->io_wr_cnt);
+ for (j = 0, k = 0; j < strlen(vmp->host_vmid); j++, k += 3)
+ sprintf((char *)(hxstr + k), "%2x ", vmp->host_vmid[j]);
+ /* UUIDs */
+ len += scnprintf(buf + len, PAGE_SIZE - len, "UUID:\n");
+ len += scnprintf(buf + len, PAGE_SIZE - len, "%s\n", hxstr);
+
+ len += scnprintf(buf + len, PAGE_SIZE - len, "String (%s)\n",
+ vmp->host_vmid);
+
+ if (vport->phba->pport->vmid_flag & LPFC_VMID_TYPE_PRIO)
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "CS_CTL VMID: 0x%x\n",
+ vmp->un.cs_ctl_vmid);
+ else
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "Application id: 0x%x\n",
+ vmp->un.app_id);
+
+ /* calculate the last access time */
+ for_each_possible_cpu(cpu) {
+ lta = per_cpu_ptr(vmp->last_io_time, cpu);
+ if (!lta)
+ continue;
+
+ /* if last access time is less than timeout */
+ if (time_after((unsigned long)*lta, jiffies))
+ continue;
+
+ if (*lta > max_lta)
+ max_lta = *lta;
+ }
+
+ rct_acc = jiffies_to_msecs(jiffies - max_lta) / 1000;
+ /* current time */
+ time64_to_tm(ktime_get_real_seconds(),
+ -(sys_tz.tz_minuteswest * 60) - rct_acc, &tm_val);
+
+ len += scnprintf(buf + len, PAGE_SIZE - len,
+ "Last Access Time :"
+ "%ld-%d-%dT%02d:%02d:%02d\n\n",
+ 1900 + tm_val.tm_year, tm_val.tm_mon + 1,
+ tm_val.tm_mday, tm_val.tm_hour,
+ tm_val.tm_min, tm_val.tm_sec);
+
+ if (len >= PAGE_SIZE)
+ return len;
+
+ memset(hxstr, 0, LPFC_MAX_VMID_SIZE * 3);
+ }
+ return len;
+}
+
/**
* lpfc_drvr_version_show - Return the Emulex driver string with version number
* @dev: class unused variable.
@@ -3011,6 +3143,7 @@ static DEVICE_ATTR(protocol, S_IRUGO, lpfc_sli4_protocol_show, NULL);
static DEVICE_ATTR(lpfc_xlane_supported, S_IRUGO, lpfc_oas_supported_show,
NULL);
static DEVICE_ATTR(cmf_info, 0444, lpfc_cmf_info_show, NULL);
+static DEVICE_ATTR_RO(lpfc_vmid_info);
#define WWN_SZ 8
/**
@@ -6117,6 +6250,7 @@ static struct attribute *lpfc_hba_attrs[] = {
&dev_attr_lpfc_vmid_inactivity_timeout.attr,
&dev_attr_lpfc_vmid_app_header.attr,
&dev_attr_lpfc_vmid_priority_tagging.attr,
+ &dev_attr_lpfc_vmid_info.attr,
NULL,
};
A vmid_info sysfs entry is created as a convenience designed for users to obtain VMID information without having to log into fabrics for similar info. Signed-off-by: Justin Tee <justin.tee@broadcom.com> --- drivers/scsi/lpfc/lpfc_attr.c | 134 ++++++++++++++++++++++++++++++++++ 1 file changed, 134 insertions(+)