Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi

Pull first round of SCSI updates from James Bottomley:
 "The most important feature of this patch set is the new async
  infrastructure that makes sure async_synchronize_full() synchronizes
  all domains and allows us to remove all the hacks (like having
  scsi_complete_async_scans() in the device base code) and means that
  the async infrastructure will "just work" in future.

  The rest is assorted driver updates (aacraid, bnx2fc, virto-scsi,
  megaraid, bfa, lpfc, qla2xxx, qla4xxx) plus a lot of infrastructure
  work in sas and FC.

  Signed-off-by: James Bottomley <JBottomley@Parallels.com>"

* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (97 commits)
  [SCSI] Revert "[SCSI] fix async probe regression"
  [SCSI] cleanup usages of scsi_complete_async_scans
  [SCSI] queue async scan work to an async_schedule domain
  [SCSI] async: make async_synchronize_full() flush all work regardless of domain
  [SCSI] async: introduce 'async_domain' type
  [SCSI] bfa: Fix to set correct return error codes and misc cleanup.
  [SCSI] aacraid: Series 7 Async. (performance) mode support
  [SCSI] aha152x: Allow use on 64bit systems
  [SCSI] virtio-scsi: Add vdrv->scan for post VIRTIO_CONFIG_S_DRIVER_OK LUN scanning
  [SCSI] bfa: squelch lockdep complaint with a spin_lock_init
  [SCSI] qla2xxx: remove unnecessary reads of PCI_CAP_ID_EXP
  [SCSI] qla4xxx: remove unnecessary read of PCI_CAP_ID_EXP
  [SCSI] ufs: fix incorrect return value about SUCCESS and FAILED
  [SCSI] ufs: reverse the ufshcd_is_device_present logic
  [SCSI] ufs: use module_pci_driver
  [SCSI] usb-storage: update usb devices for write cache quirk in quirk list.
  [SCSI] usb-storage: add support for write cache quirk
  [SCSI] set to WCE if usb cache quirk is present.
  [SCSI] virtio-scsi: hotplug support for virtio-scsi
  [SCSI] virtio-scsi: split scatterlist per target
  ...

1 files changed, 15 insertions, 9 deletions

diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index 8f9dfba3fcf..399162b50a8 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -224,7 +224,7 @@ struct fc_rport_priv {
 };
 
 /**
- * struct fcoe_dev_stats - fcoe stats structure
+ * struct fc_stats - fc stats structure
  * @SecondsSinceLastReset: Seconds since the last reset
  * @TxFrames:              Number of transmitted frames
  * @TxWords:               Number of transmitted words
@@ -232,6 +232,9 @@ struct fc_rport_priv {
  * @RxWords:               Number of received words
  * @ErrorFrames:           Number of received error frames
  * @DumpedFrames:          Number of dumped frames
+ * @FcpPktAllocFails:      Number of fcp packet allocation failures
+ * @FcpPktAborts:          Number of fcp packet aborts
+ * @FcpFrameAllocFails:    Number of fcp frame allocation failures
  * @LinkFailureCount:      Number of link failures
  * @LossOfSignalCount:     Number for signal losses
  * @InvalidTxWordCount:    Number of invalid transmitted words
@@ -244,7 +247,7 @@ struct fc_rport_priv {
  * @VLinkFailureCount:     Number of virtual link failures
  * @MissDiscAdvCount:      Number of missing FIP discovery advertisement
  */
-struct fcoe_dev_stats {
+struct fc_stats {
 	u64		SecondsSinceLastReset;
 	u64		TxFrames;
 	u64		TxWords;
@@ -252,6 +255,9 @@ struct fcoe_dev_stats {
 	u64		RxWords;
 	u64		ErrorFrames;
 	u64		DumpedFrames;
+	u64		FcpPktAllocFails;
+	u64		FcpPktAborts;
+	u64		FcpFrameAllocFails;
 	u64		LinkFailureCount;
 	u64		LossOfSignalCount;
 	u64		InvalidTxWordCount;
@@ -510,7 +516,7 @@ struct libfc_function_template {
 	int (*ddp_done)(struct fc_lport *, u16);
 	/*
 	 * Sets up the DDP context for a given exchange id on the given
-	 * scatterlist if LLD supports DDP for FCoE target.
+	 * scatterlist if LLD supports DDP for target.
 	 *
 	 * STATUS: OPTIONAL
 	 */
@@ -817,8 +823,7 @@ enum fc_lport_event {
  * @state:                 Identifies the state
  * @boot_time:             Timestamp indicating when the local port came online
  * @host_stats:            SCSI host statistics
- * @dev_stats:             FCoE device stats (TODO: libfc should not be
- *                         FCoE aware)
+ * @stats:                 FC local port stats (TODO separate libfc LLD stats)
  * @retry_count:           Number of retries in the current state
  * @port_id:               FC Port ID
  * @wwpn:                  World Wide Port Name
@@ -867,7 +872,7 @@ struct fc_lport {
 	enum fc_lport_state	       state;
 	unsigned long		       boot_time;
 	struct fc_host_statistics      host_stats;
-	struct fcoe_dev_stats __percpu *dev_stats;
+	struct fc_stats	__percpu       *stats;
 	u8			       retry_count;
 
 	/* Fabric information */
@@ -980,8 +985,8 @@ static inline void fc_lport_state_enter(struct fc_lport *lport,
  */
 static inline int fc_lport_init_stats(struct fc_lport *lport)
 {
-	lport->dev_stats = alloc_percpu(struct fcoe_dev_stats);
-	if (!lport->dev_stats)
+	lport->stats = alloc_percpu(struct fc_stats);
+	if (!lport->stats)
 		return -ENOMEM;
 	return 0;
 }
@@ -992,7 +997,7 @@ static inline int fc_lport_init_stats(struct fc_lport *lport)
  */
 static inline void fc_lport_free_stats(struct fc_lport *lport)
 {
-	free_percpu(lport->dev_stats);
+	free_percpu(lport->stats);
 }
 
 /**
@@ -1116,6 +1121,7 @@ void fc_fill_hdr(struct fc_frame *, const struct fc_frame *,
  * EXCHANGE MANAGER LAYER
  *****************************/
 int fc_exch_init(struct fc_lport *);
+void fc_exch_update_stats(struct fc_lport *lport);
 struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *,
 					   struct fc_exch_mgr *,
 					   bool (*match)(struct fc_frame *));