[SCSI] libfc: update fcp and exch stats
Updates newly added stats from fc_get_host_stats,
added new function fc_exch_update_stats to
update exches related stats from fc_exch.c
by going thru internal ema_list elements.
Signed-off-by: Vasu Dev <vasu.dev@intel.com>
Acked-by : Robert Love <robert.w.love@intel.com>
Tested-by: Ross Brattain <ross.b.brattain@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
diff --git a/drivers/scsi/libfc/fc_exch.c b/drivers/scsi/libfc/fc_exch.c
index 1d0334f..10a6a2a 100644
--- a/drivers/scsi/libfc/fc_exch.c
+++ b/drivers/scsi/libfc/fc_exch.c
@@ -99,11 +99,6 @@
u16 max_xid;
u16 pool_max_index;
- /*
- * currently exchange mgr stats are updated but not used.
- * either stats can be expose via sysfs or remove them
- * all together if not used XXX
- */
struct {
atomic_t no_free_exch;
atomic_t no_free_exch_xid;
@@ -2156,6 +2151,31 @@
}
/**
+ * fc_exch_update_stats() - update exches stats to lport
+ * @lport: The local port to update exchange manager stats
+ */
+void fc_exch_update_stats(struct fc_lport *lport)
+{
+ struct fc_host_statistics *st;
+ struct fc_exch_mgr_anchor *ema;
+ struct fc_exch_mgr *mp;
+
+ st = &lport->host_stats;
+
+ list_for_each_entry(ema, &lport->ema_list, ema_list) {
+ mp = ema->mp;
+ st->fc_no_free_exch += atomic_read(&mp->stats.no_free_exch);
+ st->fc_no_free_exch_xid +=
+ atomic_read(&mp->stats.no_free_exch_xid);
+ st->fc_xid_not_found += atomic_read(&mp->stats.xid_not_found);
+ st->fc_xid_busy += atomic_read(&mp->stats.xid_busy);
+ st->fc_seq_not_found += atomic_read(&mp->stats.seq_not_found);
+ st->fc_non_bls_resp += atomic_read(&mp->stats.non_bls_resp);
+ }
+}
+EXPORT_SYMBOL(fc_exch_update_stats);
+
+/**
* fc_exch_mgr_add() - Add an exchange manager to a local port's list of EMs
* @lport: The local port to add the exchange manager to
* @mp: The exchange manager to be added to the local port