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-rw-r--r--include/scsi/libfc.h45
1 files changed, 39 insertions, 6 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index a70eafaad08..0303a6a098c 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -22,6 +22,7 @@
#include <linux/timer.h>
#include <linux/if.h>
+#include <linux/percpu.h>
#include <scsi/scsi_transport.h>
#include <scsi/scsi_transport_fc.h>
@@ -661,7 +662,8 @@ struct fc_lport {
unsigned long boot_time;
struct fc_host_statistics host_stats;
- struct fcoe_dev_stats *dev_stats[NR_CPUS];
+ struct fcoe_dev_stats *dev_stats;
+
u64 wwpn;
u64 wwnn;
u8 retry_count;
@@ -694,11 +696,6 @@ struct fc_lport {
/*
* FC_LPORT HELPER FUNCTIONS
*****************************/
-static inline void *lport_priv(const struct fc_lport *lp)
-{
- return (void *)(lp + 1);
-}
-
static inline int fc_lport_test_ready(struct fc_lport *lp)
{
return lp->state == LPORT_ST_READY;
@@ -722,6 +719,42 @@ static inline void fc_lport_state_enter(struct fc_lport *lp,
lp->state = state;
}
+static inline int fc_lport_init_stats(struct fc_lport *lp)
+{
+ /* allocate per cpu stats block */
+ lp->dev_stats = alloc_percpu(struct fcoe_dev_stats);
+ if (!lp->dev_stats)
+ return -ENOMEM;
+ return 0;
+}
+
+static inline void fc_lport_free_stats(struct fc_lport *lp)
+{
+ free_percpu(lp->dev_stats);
+}
+
+static inline struct fcoe_dev_stats *fc_lport_get_stats(struct fc_lport *lp)
+{
+ return per_cpu_ptr(lp->dev_stats, smp_processor_id());
+}
+
+static inline void *lport_priv(const struct fc_lport *lp)
+{
+ return (void *)(lp + 1);
+}
+
+/**
+ * libfc_host_alloc() - Allocate a Scsi_Host with room for the fc_lport
+ * @sht: ptr to the scsi host templ
+ * @priv_size: size of private data after fc_lport
+ *
+ * Returns: ptr to Scsi_Host
+ */
+static inline struct Scsi_Host *
+libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
+{
+ return scsi_host_alloc(sht, sizeof(struct fc_lport) + priv_size);
+}
/*
* LOCAL PORT LAYER