[SCSI] lpfc 8.2.8 v2 : Add statistical reporting control and additional fc vendor events
Added support for new sysfs attributes: lpfc_stat_data_ctrl and
lpfc_max_scsicmpl_time. The attributes control statistical reporting
of io load.
Added support for new fc vendor events for error reporting.
Signed-off-by: James Smart <james.smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
diff --git a/drivers/scsi/lpfc/lpfc_vport.c b/drivers/scsi/lpfc/lpfc_vport.c
index 2578d5f..a7de1cc 100644
--- a/drivers/scsi/lpfc/lpfc_vport.c
+++ b/drivers/scsi/lpfc/lpfc_vport.c
@@ -34,6 +34,7 @@
#include <scsi/scsi_transport_fc.h>
#include "lpfc_hw.h"
#include "lpfc_sli.h"
+#include "lpfc_nl.h"
#include "lpfc_disc.h"
#include "lpfc_scsi.h"
#include "lpfc.h"
@@ -745,3 +746,82 @@
scsi_host_put(lpfc_shost_from_vport(vports[i]));
kfree(vports);
}
+
+
+/**
+ * lpfc_vport_reset_stat_data: Reset the statistical data for the vport.
+ * @vport: Pointer to vport object.
+ *
+ * This function resets the statistical data for the vport. This function
+ * is called with the host_lock held
+ **/
+void
+lpfc_vport_reset_stat_data(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
+
+ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+ if (ndlp->lat_data)
+ memset(ndlp->lat_data, 0, LPFC_MAX_BUCKET_COUNT *
+ sizeof(struct lpfc_scsicmd_bkt));
+ }
+}
+
+
+/**
+ * lpfc_alloc_bucket: Allocate data buffer required for collecting
+ * statistical data.
+ * @vport: Pointer to vport object.
+ *
+ * This function allocates data buffer required for all the FC
+ * nodes of the vport to collect statistical data.
+ **/
+void
+lpfc_alloc_bucket(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
+
+ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+
+ kfree(ndlp->lat_data);
+ ndlp->lat_data = NULL;
+
+ if (ndlp->nlp_state == NLP_STE_MAPPED_NODE) {
+ ndlp->lat_data = kcalloc(LPFC_MAX_BUCKET_COUNT,
+ sizeof(struct lpfc_scsicmd_bkt),
+ GFP_ATOMIC);
+
+ if (!ndlp->lat_data)
+ lpfc_printf_vlog(vport, KERN_ERR, LOG_NODE,
+ "0287 lpfc_alloc_bucket failed to "
+ "allocate statistical data buffer DID "
+ "0x%x\n", ndlp->nlp_DID);
+ }
+ }
+}
+
+/**
+ * lpfc_free_bucket: Free data buffer required for collecting
+ * statistical data.
+ * @vport: Pointer to vport object.
+ *
+ * Th function frees statistical data buffer of all the FC
+ * nodes of the vport.
+ **/
+void
+lpfc_free_bucket(struct lpfc_vport *vport)
+{
+ struct lpfc_nodelist *ndlp = NULL, *next_ndlp = NULL;
+
+ list_for_each_entry_safe(ndlp, next_ndlp, &vport->fc_nodes, nlp_listp) {
+ if (!NLP_CHK_NODE_ACT(ndlp))
+ continue;
+
+ kfree(ndlp->lat_data);
+ ndlp->lat_data = NULL;
+ }
+}