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: (170 commits) [SCSI] scsi_dh_rdac: Add MD36xxf into device list [SCSI] scsi_debug: add consecutive medium errors [SCSI] libsas: fix ata list corruption issue [SCSI] hpsa: export resettable host attribute [SCSI] hpsa: move device attributes to avoid forward declarations [SCSI] scsi_debug: Logical Block Provisioning (SBC3r26) [SCSI] sd: Logical Block Provisioning update [SCSI] Include protection operation in SCSI command trace [SCSI] hpsa: fix incorrect PCI IDs and add two new ones (2nd try) [SCSI] target: Fix volume size misreporting for volumes > 2TB [SCSI] bnx2fc: Broadcom FCoE offload driver [SCSI] fcoe: fix broken fcoe interface reset [SCSI] fcoe: precedence bug in fcoe_filter_frames() [SCSI] libfcoe: Remove stale fcoe-netdev entries [SCSI] libfcoe: Move FCOE_MTU definition from fcoe.h to libfcoe.h [SCSI] libfc: introduce __fc_fill_fc_hdr that accepts fc_hdr as an argument [SCSI] fcoe, libfc: initialize EM anchors list and then update npiv EMs [SCSI] Revert "[SCSI] libfc: fix exchange being deleted when the abort itself is timed out" [SCSI] libfc: Fixing a memory leak when destroying an interface [SCSI] megaraid_sas: Version and Changelog update ... Fix up trivial conflicts due to whitespace differences in drivers/scsi/libsas/{sas_ata.c,sas_scsi_host.c}
2011-03-17 17:54:40 -07:00
--- a/include/scsi/fc/fc_ns.h
+++ b/include/scsi/fc/fc_ns.h
@@ -41,6 +41,7 @@ enum fc_ns_req {
 	FC_NS_GI_A =	0x0101,		/* get identifiers - scope */
 	FC_NS_GPN_ID =	0x0112,		/* get port name by ID */
 	FC_NS_GNN_ID =	0x0113,		/* get node name by ID */
+	FC_NS_GSPN_ID = 0x0118,		/* get symbolic port name */
 	FC_NS_GID_PN =	0x0121,		/* get ID for port name */
 	FC_NS_GID_NN =	0x0131,		/* get IDs for node name */
 	FC_NS_GID_FT =	0x0171,		/* get IDs by FC4 type */
@@ -144,13 +145,21 @@ struct fc_ns_gid_pn {
 };

 /*
- * GID_PN response
+ * GID_PN response or GSPN_ID request
 */
 struct fc_gid_pn_resp {
 	__u8      fp_resvd;
 	__u8      fp_fid[3];     /* port ID */
 };

+/*
+ * GSPN_ID response
+ */
+struct fc_gspn_resp {
+	__u8	fp_name_len;
+	char	fp_name[];
+};
+
 /*
 * RFT_ID request - register FC-4 types for ID.
 */
--- a/include/scsi/fc_encode.h
+++ b/include/scsi/fc_encode.h
@@ -46,6 +46,22 @@ struct fc_ct_req {
 	} payload;
 };

+static inline void __fc_fill_fc_hdr(struct fc_frame_header *fh,
+				    enum fc_rctl r_ctl,
+				    u32 did, u32 sid, enum fc_fh_type type,
+				    u32 f_ctl, u32 parm_offset)
+{
+	WARN_ON(r_ctl == 0);
+	fh->fh_r_ctl = r_ctl;
+	hton24(fh->fh_d_id, did);
+	hton24(fh->fh_s_id, sid);
+	fh->fh_type = type;
+	hton24(fh->fh_f_ctl, f_ctl);
+	fh->fh_cs_ctl = 0;
+	fh->fh_df_ctl = 0;
+	fh->fh_parm_offset = htonl(parm_offset);
+}
+
 /**
 * fill FC header fields in specified fc_frame
 */
@@ -56,15 +72,7 @@ static inline void fc_fill_fc_hdr(struct fc_frame *fp, enum fc_rctl r_ctl,
 	struct fc_frame_header *fh;

 	fh = fc_frame_header_get(fp);
-	WARN_ON(r_ctl == 0);
-	fh->fh_r_ctl = r_ctl;
-	hton24(fh->fh_d_id, did);
-	hton24(fh->fh_s_id, sid);
-	fh->fh_type = type;
-	hton24(fh->fh_f_ctl, f_ctl);
-	fh->fh_cs_ctl = 0;
-	fh->fh_df_ctl = 0;
-	fh->fh_parm_offset = htonl(parm_offset);
+	__fc_fill_fc_hdr(fh, r_ctl, did, sid, type, f_ctl, parm_offset);
 }

 /**
--- a/include/scsi/libfc.h
+++ b/include/scsi/libfc.h
@@ -35,6 +35,8 @@

 #include <scsi/fc_frame.h>

+#define	FC_FC4_PROV_SIZE	(FC_TYPE_FCP + 1)	/* size of tables */
+
 /*
 * libfc error codes
 */
@@ -156,6 +158,7 @@ struct fc_rport_libfc_priv {
 	#define FC_RP_FLAGS_REC_SUPPORTED	(1 << 0)
 	#define FC_RP_FLAGS_RETRY		(1 << 1)
 	#define FC_RP_STARTED			(1 << 2)
+	#define FC_RP_FLAGS_CONF_REQ		(1 << 3)
 	unsigned int	           e_d_tov;
 	unsigned int	           r_a_tov;
 };
@@ -179,6 +182,7 @@ struct fc_rport_libfc_priv {
 * @rp_mutex:       The mutex that protects the remote port
 * @retry_work:     Handle for retries
 * @event_callback: Callback when READY, FAILED or LOGO states complete
+ * @prli_count:     Count of open PRLI sessions in providers
 * @rcu:	    Structure used for freeing in an RCU-safe manner
 */
 struct fc_rport_priv {
@@ -202,7 +206,13 @@ struct fc_rport_priv {
 	struct list_head            peers;
 	struct work_struct          event_work;
 	u32			    supported_classes;
+	u16                         prli_count;
 	struct rcu_head		    rcu;
+	u16			    sp_features;
+	u8			    spp_type;
+	void			    (*lld_event_callback)(struct fc_lport *,
+						      struct fc_rport_priv *,
+						      enum fc_rport_event);
 };

 /**
@@ -550,6 +560,16 @@ struct libfc_function_template {
 	 */
 	struct fc_seq *(*seq_start_next)(struct fc_seq *);

+	/*
+	 * Set a response handler for the exchange of the sequence.
+	 *
+	 * STATUS: OPTIONAL
+	 */
+	void (*seq_set_resp)(struct fc_seq *sp,
+			     void (*resp)(struct fc_seq *, struct fc_frame *,
+					  void *),
+			     void *arg);
+
 	/*
 	 * Assign a sequence for an incoming request frame.
 	 *
@@ -557,6 +577,13 @@ struct libfc_function_template {
 	 */
 	struct fc_seq *(*seq_assign)(struct fc_lport *, struct fc_frame *);

+	/*
+	 * Release the reference on the sequence returned by seq_assign().
+	 *
+	 * STATUS: OPTIONAL
+	 */
+	void (*seq_release)(struct fc_seq *);
+
 	/*
 	 * Reset an exchange manager, completing all sequences and exchanges.
 	 * If s_id is non-zero, reset only exchanges originating from that FID.
@@ -655,6 +682,15 @@ struct libfc_function_template {
 	 */
 	void (*rport_destroy)(struct kref *);

+	/*
+	 * Callback routine after the remote port is logged in
+	 *
+	 * STATUS: OPTIONAL
+	 */
+	void (*rport_event_callback)(struct fc_lport *,
+				     struct fc_rport_priv *,
+				     enum fc_rport_event);
+
 	/*
 	 * Send a fcp cmd from fsp pkt.
 	 * Called with the SCSI host lock unlocked and irqs disabled.
@@ -749,6 +785,15 @@ struct fc_disc {
 			      enum fc_disc_event);
 };

+/*
+ * Local port notifier and events.
+ */
+extern struct blocking_notifier_head fc_lport_notifier_head;
+enum fc_lport_event {
+	FC_LPORT_EV_ADD,
+	FC_LPORT_EV_DEL,
+};
+
 /**
 * struct fc_lport - Local port
 * @host:                  The SCSI host associated with a local port
@@ -789,8 +834,10 @@ struct fc_disc {
 * @lso_max:               The maximum large offload send size
 * @fcts:                  FC-4 type mask
 * @lp_mutex:              Mutex to protect the local port
- * @list:                  Handle for list of local ports
+ * @list:                  Linkage on list of vport peers
 * @retry_work:            Handle to local port for delayed retry context
+ * @prov:		   Pointers available for use by passive FC-4 providers
+ * @lport_list:            Linkage on module-wide list of local ports
 */
 struct fc_lport {
 	/* Associations */
@@ -846,8 +893,32 @@ struct fc_lport {
 	struct mutex                   lp_mutex;
 	struct list_head               list;
 	struct delayed_work	       retry_work;
+	void			       *prov[FC_FC4_PROV_SIZE];
+	struct list_head               lport_list;
 };

+/**
+ * struct fc4_prov - FC-4 provider registration
+ * @prli:               Handler for incoming PRLI
+ * @prlo:               Handler for session reset
+ * @recv:		Handler for incoming request
+ * @module:		Pointer to module.  May be NULL.
+ */
+struct fc4_prov {
+	int (*prli)(struct fc_rport_priv *, u32 spp_len,
+		    const struct fc_els_spp *spp_in,
+		    struct fc_els_spp *spp_out);
+	void (*prlo)(struct fc_rport_priv *);
+	void (*recv)(struct fc_lport *, struct fc_frame *);
+	struct module *module;
+};
+
+/*
+ * Register FC-4 provider with libfc.
+ */
+int fc_fc4_register_provider(enum fc_fh_type type, struct fc4_prov *);
+void fc_fc4_deregister_provider(enum fc_fh_type type, struct fc4_prov *);
+
 /*
 * FC_LPORT HELPER FUNCTIONS
 *****************************/
@@ -978,6 +1049,7 @@ struct fc_lport *libfc_vport_create(struct fc_vport *, int privsize);
 struct fc_lport *fc_vport_id_lookup(struct fc_lport *, u32 port_id);
 int fc_lport_bsg_request(struct fc_bsg_job *);
 void fc_lport_set_local_id(struct fc_lport *, u32 port_id);
+void fc_lport_iterate(void (*func)(struct fc_lport *, void *), void *);

 /*
 * REMOTE PORT LAYER
--- a/include/scsi/libfcoe.h
+++ b/include/scsi/libfcoe.h
@@ -32,6 +32,12 @@

 #define FCOE_MAX_CMD_LEN	16	/* Supported CDB length */

+/*
+ * Max MTU for FCoE: 14 (FCoE header) + 24 (FC header) + 2112 (max FC payload)
+ * + 4 (FC CRC) + 4 (FCoE trailer) =  2158 bytes
+ */
+#define FCOE_MTU	2158
+
 /*
 * FIP tunable parameters.
 */
@@ -221,6 +227,8 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *, struct fc_lport *,
 u64 fcoe_wwn_from_mac(unsigned char mac[], unsigned int, unsigned int);
 int fcoe_libfc_config(struct fc_lport *, struct fcoe_ctlr *,
 		      const struct libfc_function_template *, int init_fcp);
+u32 fcoe_fc_crc(struct fc_frame *fp);
+int fcoe_start_io(struct sk_buff *skb);

 /**
 * is_fip_mode() - returns true if FIP mode selected.
@@ -231,5 +239,102 @@ static inline bool is_fip_mode(struct fcoe_ctlr *fip)
 	return fip->state == FIP_ST_ENABLED;
 }

+/* helper for FCoE SW HBA drivers, can include subven and subdev if needed. The
+ * modpost would use pci_device_id table to auto-generate formatted module alias
+ * into the corresponding .mod.c file, but there may or may not be a pci device
+ * id table for FCoE drivers so we use the following helper for build the fcoe
+ * driver module alias.
+ */
+#define MODULE_ALIAS_FCOE_PCI(ven, dev) \
+	MODULE_ALIAS("fcoe-pci:"	\
+		"v" __stringify(ven)	\
+		"d" __stringify(dev) "sv*sd*bc*sc*i*")
+
+/* the name of the default FCoE transport driver fcoe.ko */
+#define FCOE_TRANSPORT_DEFAULT	"fcoe"
+
+/* struct fcoe_transport - The FCoE transport interface
+ * @name:	a vendor specific name for their FCoE transport driver
+ * @attached:	whether this transport is already attached
+ * @list:	list linkage to all attached transports
+ * @match:	handler to allow the transport driver to match up a given netdev
+ * @create:	handler to sysfs entry of create for FCoE instances
+ * @destroy:	handler to sysfs entry of destroy for FCoE instances
+ * @enable:	handler to sysfs entry of enable for FCoE instances
+ * @disable:	handler to sysfs entry of disable for FCoE instances
+ */
+struct fcoe_transport {
+	char name[IFNAMSIZ];
+	bool attached;
+	struct list_head list;
+	bool (*match) (struct net_device *device);
+	int (*create) (struct net_device *device, enum fip_state fip_mode);
+	int (*destroy) (struct net_device *device);
+	int (*enable) (struct net_device *device);
+	int (*disable) (struct net_device *device);
+};
+
+/**
+ * struct fcoe_percpu_s - The context for FCoE receive thread(s)
+ * @thread:	    The thread context
+ * @fcoe_rx_list:   The queue of pending packets to process
+ * @page:	    The memory page for calculating frame trailer CRCs
+ * @crc_eof_offset: The offset into the CRC page pointing to available
+ *		    memory for a new trailer
+ */
+struct fcoe_percpu_s {
+	struct task_struct *thread;
+	struct sk_buff_head fcoe_rx_list;
+	struct page *crc_eof_page;
+	int crc_eof_offset;
+};
+
+/**
+ * struct fcoe_port - The FCoE private structure
+ * @priv:		       The associated fcoe interface. The structure is
+ *			       defined by the low level driver
+ * @lport:		       The associated local port
+ * @fcoe_pending_queue:	       The pending Rx queue of skbs
+ * @fcoe_pending_queue_active: Indicates if the pending queue is active
+ * @max_queue_depth:	       Max queue depth of pending queue
+ * @min_queue_depth:	       Min queue depth of pending queue
+ * @timer:		       The queue timer
+ * @destroy_work:	       Handle for work context
+ *			       (to prevent RTNL deadlocks)
+ * @data_srt_addr:	       Source address for data
+ *
+ * An instance of this structure is to be allocated along with the
+ * Scsi_Host and libfc fc_lport structures.
+ */
+struct fcoe_port {
+	void		      *priv;
+	struct fc_lport	      *lport;
+	struct sk_buff_head   fcoe_pending_queue;
+	u8		      fcoe_pending_queue_active;
+	u32		      max_queue_depth;
+	u32		      min_queue_depth;
+	struct timer_list     timer;
+	struct work_struct    destroy_work;
+	u8		      data_src_addr[ETH_ALEN];
+};
+void fcoe_clean_pending_queue(struct fc_lport *);
+void fcoe_check_wait_queue(struct fc_lport *lport, struct sk_buff *skb);
+void fcoe_queue_timer(ulong lport);
+int fcoe_get_paged_crc_eof(struct sk_buff *skb, int tlen,
+			   struct fcoe_percpu_s *fps);
+
+/**
+ * struct netdev_list
+ * A mapping from netdevice to fcoe_transport
+ */
+struct fcoe_netdev_mapping {
+	struct list_head list;
+	struct net_device *netdev;
+	struct fcoe_transport *ft;
+};
+
+/* fcoe transports registration and deregistration */
+int fcoe_transport_attach(struct fcoe_transport *ft);
+int fcoe_transport_detach(struct fcoe_transport *ft);

 #endif /* _LIBFCOE_H */
--- a/include/scsi/libiscsi.h
+++ b/include/scsi/libiscsi.h
@@ -212,9 +212,6 @@ struct iscsi_conn {
 	/* values userspace uses to id a conn */
 	int			persistent_port;
 	char			*persistent_address;
-	/* remote portal currently connected to */
-	int			portal_port;
-	char			portal_address[ISCSI_ADDRESS_BUF_LEN];

 	/* MIB-statistics */
 	uint64_t		txdata_octets;
@@ -319,9 +316,6 @@ struct iscsi_host {
 	/* hw address or netdev iscsi connection is bound to */
 	char			*hwaddress;
 	char			*netdev;
-	/* local address */
-	int			local_port;
-	char			local_address[ISCSI_ADDRESS_BUF_LEN];

 	wait_queue_head_t	session_removal_wq;
 	/* protects sessions and state */
@@ -394,6 +388,8 @@ extern void iscsi_session_failure(struct iscsi_session *session,
 				  enum iscsi_err err);
 extern int iscsi_conn_get_param(struct iscsi_cls_conn *cls_conn,
 				enum iscsi_param param, char *buf);
+extern int iscsi_conn_get_addr_param(struct sockaddr_storage *addr,
+				     enum iscsi_param param, char *buf);
 extern void iscsi_suspend_tx(struct iscsi_conn *conn);
 extern void iscsi_suspend_queue(struct iscsi_conn *conn);
 extern void iscsi_conn_queue_work(struct iscsi_conn *conn);
--- a/include/scsi/scsi.h
+++ b/include/scsi/scsi.h
@@ -435,6 +435,10 @@ static inline int scsi_is_wlun(unsigned int lun)
 				      * recover the link. Transport class will
 				      * retry or fail IO */
 #define DID_TRANSPORT_FAILFAST	0x0f /* Transport class fastfailed the io */
+#define DID_TARGET_FAILURE 0x10 /* Permanent target failure, do not retry on
+				 * other paths */
+#define DID_NEXUS_FAILURE 0x11  /* Permanent nexus failure, retry on other
+				 * paths might yield different results */
 #define DRIVER_OK       0x00	/* Driver status                           */

 /*
@@ -464,6 +468,7 @@ static inline int scsi_is_wlun(unsigned int lun)
 #define TIMEOUT_ERROR   0x2007
 #define SCSI_RETURN_NOT_HANDLED   0x2008
 #define FAST_IO_FAIL	0x2009
+#define TARGET_ERROR    0x200A

 /*
 * Midlevel queue return values.
--- a/include/scsi/scsi_device.h
+++ b/include/scsi/scsi_device.h
@@ -184,6 +184,7 @@ typedef void (*activate_complete)(void *, int);
 struct scsi_device_handler {
 	/* Used by the infrastructure */
 	struct list_head list; /* list of scsi_device_handlers */
+	int idx;

 	/* Filled by the hardware handler */
 	struct module *module;
--- a/include/scsi/scsi_transport_iscsi.h
+++ b/include/scsi/scsi_transport_iscsi.h
@@ -101,6 +101,8 @@ struct iscsi_transport {
 	void (*destroy_conn) (struct iscsi_cls_conn *conn);
 	int (*set_param) (struct iscsi_cls_conn *conn, enum iscsi_param param,
 			  char *buf, int buflen);
+	int (*get_ep_param) (struct iscsi_endpoint *ep, enum iscsi_param param,
+			     char *buf);
 	int (*get_conn_param) (struct iscsi_cls_conn *conn,
 			       enum iscsi_param param, char *buf);
 	int (*get_session_param) (struct iscsi_cls_session *session,
@@ -160,8 +162,9 @@ struct iscsi_cls_conn {
 	void *dd_data;			/* LLD private data */
 	struct iscsi_transport *transport;
 	uint32_t cid;			/* connection id */
+	struct mutex ep_mutex;
+	struct iscsi_endpoint *ep;

-	int active;			/* must be accessed with the connlock */
 	struct device dev;		/* sysfs transport/container device */
 };

@@ -222,6 +225,7 @@ struct iscsi_endpoint {
 	void *dd_data;			/* LLD private data */
 	struct device dev;
 	uint64_t id;
+	struct iscsi_cls_conn *conn;
 };

 /*