Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6: (38 commits)
  fusion: mptsas, fix lock imbalance
  [SCSI] scsi_transport_fc: replace BUS_ID_SIZE by fixed count
  sd, sr: fix Driver 'sd' needs updating message
  scsi_transport_iscsi: return -EOVERFLOW for Too many iscsi targets
  fc_transport: Selective return value from BSG timeout function
  fc_transport: The softirq_done function registration for BSG request
  sym53c8xx: ratelimit parity errors
  explain the hidden scsi_wait_scan Kconfig variable
  ibmvfc: Fix endless PRLI loop in discovery
  ibmvfc: Process async events before command responses
  libfc: Add runtime debugging with debug_logging module parameter
  libfcoe: Add runtime debugging with module param debug_logging
  fcoe: Add runtime debug logging with module parameter debug_logging
  scsi_debug: Add support for physical block exponent and alignment
  cnic: add NETDEV_1000 and NETDEVICES to Kconfig select
  cnic: Fix __symbol_get() build error.
  Revert "[SCSI] cnic: fix error: implicit declaration of function ‘__symbol_get’"
  ipr: differentiate pci-x and pci-e based adapters
  ipr: add test for MSI interrupt support
  scsi_transport_spi: Blacklist Ultrium-3 tape for IU transfers
  ...

4 files changed, 71 insertions, 13 deletions

diff --git a/include/scsi/fc_encode.h b/include/scsi/fc_encode.h
index 6300f556bce..a0ff61c3e93 100644
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -107,7 +107,6 @@ static inline int fc_ct_fill(struct fc_lport *lport, struct fc_frame *fp,
 		break;
 
 	default:
-		FC_DBG("Invalid op code %x \n", op);
 		return -EINVAL;
 	}
 	*r_ctl = FC_RCTL_DD_UNSOL_CTL;
@@ -298,7 +297,6 @@ static inline int fc_els_fill(struct fc_lport *lport, struct fc_rport *rport,
 		break;
 
 	default:
-		FC_DBG("Invalid op code %x \n", op);
 		return -EINVAL;
 	}
 
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h
index ebdd9f4cf07..b92584a8843 100644
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -34,17 +34,72 @@
 
 #include <scsi/fc_frame.h>
 
-#define LIBFC_DEBUG
-
-#ifdef LIBFC_DEBUG
-/* Log messages */
-#define FC_DBG(fmt, args...)						\
-	do {								\
-		printk(KERN_INFO "%s " fmt, __func__, ##args);		\
-	} while (0)
-#else
-#define FC_DBG(fmt, args...)
-#endif
+#define FC_LIBFC_LOGGING 0x01 /* General logging, not categorized */
+#define FC_LPORT_LOGGING 0x02 /* lport layer logging */
+#define FC_DISC_LOGGING  0x04 /* discovery layer logging */
+#define FC_RPORT_LOGGING 0x08 /* rport layer logging */
+#define FC_FCP_LOGGING   0x10 /* I/O path logging */
+#define FC_EM_LOGGING    0x20 /* Exchange Manager logging */
+#define FC_EXCH_LOGGING  0x40 /* Exchange/Sequence logging */
+#define FC_SCSI_LOGGING  0x80 /* SCSI logging (mostly error handling) */
+
+extern unsigned int fc_debug_logging;
+
+#define FC_CHECK_LOGGING(LEVEL, CMD)				\
+do {								\
+	if (unlikely(fc_debug_logging & LEVEL))			\
+		do {						\
+			CMD;					\
+		} while (0);					\
+} while (0);
+
+#define FC_LIBFC_DBG(fmt, args...)					\
+	FC_CHECK_LOGGING(FC_LIBFC_LOGGING,				\
+			 printk(KERN_INFO "libfc: " fmt, ##args);)
+
+#define FC_LPORT_DBG(lport, fmt, args...)				\
+	FC_CHECK_LOGGING(FC_LPORT_LOGGING,				\
+			 printk(KERN_INFO "lport: %6x: " fmt,		\
+				fc_host_port_id(lport->host), ##args);)
+
+#define FC_DISC_DBG(disc, fmt, args...)					\
+	FC_CHECK_LOGGING(FC_DISC_LOGGING,				\
+			 printk(KERN_INFO "disc: %6x: " fmt,		\
+				fc_host_port_id(disc->lport->host),	\
+				##args);)
+
+#define FC_RPORT_DBG(rport, fmt, args...)				\
+do {									\
+	struct fc_rport_libfc_priv *rdata = rport->dd_data;		\
+	struct fc_lport *lport = rdata->local_port;			\
+	FC_CHECK_LOGGING(FC_RPORT_LOGGING,				\
+			 printk(KERN_INFO "rport: %6x: %6x: " fmt,	\
+				fc_host_port_id(lport->host),		\
+				rport->port_id, ##args);)		\
+} while (0);
+
+#define FC_FCP_DBG(pkt, fmt, args...)					\
+	FC_CHECK_LOGGING(FC_FCP_LOGGING,				\
+			 printk(KERN_INFO "fcp: %6x: %6x: " fmt,	\
+				fc_host_port_id(pkt->lp->host),		\
+				pkt->rport->port_id, ##args);)
+
+#define FC_EM_DBG(em, fmt, args...)					\
+	FC_CHECK_LOGGING(FC_EM_LOGGING,					\
+			 printk(KERN_INFO "em: %6x: " fmt,		\
+				fc_host_port_id(em->lp->host),		\
+				##args);)
+
+#define FC_EXCH_DBG(exch, fmt, args...)					\
+	FC_CHECK_LOGGING(FC_EXCH_LOGGING,				\
+			 printk(KERN_INFO "exch: %6x: %4x: " fmt,	\
+				fc_host_port_id(exch->lp->host),	\
+				exch->xid, ##args);)
+
+#define FC_SCSI_DBG(lport, fmt, args...)				\
+	FC_CHECK_LOGGING(FC_SCSI_LOGGING,                               \
+			 printk(KERN_INFO "scsi: %6x: " fmt,		\
+				fc_host_port_id(lport->host), ##args);)
 
 /*
  * libfc error codes
diff --git a/include/scsi/libiscsi.h b/include/scsi/libiscsi.h
index 196525cd402..61afeb59a83 100644
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -125,6 +125,10 @@ struct iscsi_task {
 	struct scsi_cmnd	*sc;		/* associated SCSI cmd*/
 	struct iscsi_conn	*conn;		/* used connection    */
 
+	/* data processing tracking */
+	unsigned long		last_xfer;
+	unsigned long		last_timeout;
+	bool			have_checked_conn;
 	/* state set/tested under session->lock */
 	int			state;
 	atomic_t		refcount;
diff --git a/include/scsi/scsi_driver.h b/include/scsi/scsi_driver.h
index 1f5ca7f6211..9fd6702f02e 100644
--- a/include/scsi/scsi_driver.h
+++ b/include/scsi/scsi_driver.h
@@ -32,5 +32,6 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req);
 int scsi_setup_fs_cmnd(struct scsi_device *sdev, struct request *req);
 int scsi_prep_state_check(struct scsi_device *sdev, struct request *req);
 int scsi_prep_return(struct request_queue *q, struct request *req, int ret);
+int scsi_prep_fn(struct request_queue *, struct request *);
 
 #endif /* _SCSI_SCSI_DRIVER_H */