2 * Copyright(c) 2007 Intel Corporation. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, write to the Free Software Foundation, Inc.,
15 * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
17 * Maintained at www.Open-FCoE.org
23 #include <linux/timer.h>
25 #include <linux/percpu.h>
27 #include <scsi/scsi_transport.h>
28 #include <scsi/scsi_transport_fc.h>
29 #include <scsi/scsi_bsg_fc.h>
31 #include <scsi/fc/fc_fcp.h>
32 #include <scsi/fc/fc_ns.h>
33 #include <scsi/fc/fc_els.h>
34 #include <scsi/fc/fc_gs.h>
36 #include <scsi/fc_frame.h>
41 #define FC_NO_ERR 0 /* no error */
42 #define FC_EX_TIMEOUT 1 /* Exchange timeout */
43 #define FC_EX_CLOSED 2 /* Exchange closed */
45 /* some helpful macros */
47 #define ntohll(x) be64_to_cpu(x)
48 #define htonll(x) cpu_to_be64(x)
50 #define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2]))
52 #define hton24(p, v) do { \
53 p[0] = (((v) >> 16) & 0xFF); \
54 p[1] = (((v) >> 8) & 0xFF); \
55 p[2] = ((v) & 0xFF); \
62 LPORT_ST_DISABLED = 0,
82 RPORT_ST_INIT, /* initialized */
83 RPORT_ST_PLOGI, /* waiting for PLOGI completion */
84 RPORT_ST_PRLI, /* waiting for PRLI completion */
85 RPORT_ST_RTV, /* waiting for RTV completion */
86 RPORT_ST_READY, /* ready for use */
87 RPORT_ST_LOGO, /* port logout sent */
88 RPORT_ST_ADISC, /* Discover Address sent */
89 RPORT_ST_DELETE, /* port being deleted */
90 RPORT_ST_RESTART, /* remote port being deleted and will restart */
94 * struct fc_disc_port - temporary discovery port to hold rport identifiers
95 * @lp: Fibre Channel host port instance
96 * @peers: Node for list management during discovery and RSCN processing
97 * @rport_work: Work struct for starting the rport state machine
98 * @port_id: Port ID of the discovered port
100 struct fc_disc_port {
102 struct list_head peers;
103 struct work_struct rport_work;
107 enum fc_rport_event {
115 struct fc_rport_priv;
117 struct fc_rport_operations {
118 void (*event_callback)(struct fc_lport *, struct fc_rport_priv *,
119 enum fc_rport_event);
123 * struct fc_rport_libfc_priv - libfc internal information about a remote port
124 * @local_port: Fibre Channel host port instance
125 * @rp_state: indicates READY for I/O or DELETE when blocked.
126 * @flags: REC and RETRY supported flags
127 * @e_d_tov: error detect timeout value (in msec)
128 * @r_a_tov: resource allocation timeout value (in msec)
130 struct fc_rport_libfc_priv {
131 struct fc_lport *local_port;
132 enum fc_rport_state rp_state;
134 #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0)
135 #define FC_RP_FLAGS_RETRY (1 << 1)
136 unsigned int e_d_tov;
137 unsigned int r_a_tov;
141 * struct fc_rport_priv - libfc rport and discovery info about a remote port
142 * @local_port: Fibre Channel host port instance
143 * @rport: transport remote port
144 * @kref: reference counter
145 * @rp_state: state tracks progress of PLOGI, PRLI, and RTV exchanges
146 * @ids: remote port identifiers and roles
147 * @flags: REC and RETRY supported flags
148 * @max_seq: maximum number of concurrent sequences
149 * @disc_id: discovery identifier
150 * @maxframe_size: maximum frame size
151 * @retries: retry count in current state
152 * @e_d_tov: error detect timeout value (in msec)
153 * @r_a_tov: resource allocation timeout value (in msec)
154 * @rp_mutex: mutex protects rport
156 * @event_callback: Callback for rport READY, FAILED or LOGO
158 struct fc_rport_priv {
159 struct fc_lport *local_port;
160 struct fc_rport *rport;
162 enum fc_rport_state rp_state;
163 struct fc_rport_identifiers ids;
168 unsigned int retries;
169 unsigned int e_d_tov;
170 unsigned int r_a_tov;
171 struct mutex rp_mutex;
172 struct delayed_work retry_work;
173 enum fc_rport_event event;
174 struct fc_rport_operations *ops;
175 struct list_head peers;
176 struct work_struct event_work;
177 u32 supported_classes;
181 * fcoe stats structure
183 struct fcoe_dev_stats {
184 u64 SecondsSinceLastReset;
191 u64 LinkFailureCount;
192 u64 LossOfSignalCount;
193 u64 InvalidTxWordCount;
203 * els data is used for passing ELS respone specific
204 * data to send ELS response mainly using infomation
205 * in exchange and sequence in EM layer.
207 struct fc_seq_els_data {
209 enum fc_els_rjt_reason reason;
210 enum fc_els_rjt_explan explan;
214 * FCP request structure, one for each scsi cmd request
220 struct fc_lport *lp; /* handle to hba struct */
221 u16 state; /* scsi_pkt state state */
222 u16 tgt_flags; /* target flags */
223 atomic_t ref_cnt; /* fcp pkt ref count */
224 spinlock_t scsi_pkt_lock; /* Must be taken before the host lock
225 * if both are held at the same time */
227 * SCSI I/O related stuff
229 struct scsi_cmnd *cmd; /* scsi command pointer. set/clear
231 struct list_head list; /* tracks queued commands. access under
234 * timeout related stuff
236 struct timer_list timer; /* command timer */
237 struct completion tm_done;
239 unsigned long start_time; /* start jiffie */
240 unsigned long end_time; /* end jiffie */
241 unsigned long last_pkt_time; /* jiffies of last frame received */
244 * scsi cmd and data transfer information
248 * transport related veriables
250 struct fcp_cmnd cdb_cmd;
252 u16 xfer_ddp; /* this xfer is ddped */
253 u32 xfer_contig_end; /* offset of end of contiguous xfer */
254 u16 max_payload; /* max payload size in bytes */
257 * scsi/fcp return status
259 u32 io_status; /* SCSI result upper 24 bits */
261 u8 status_code; /* FCP I/O status */
262 /* bit 3 Underrun bit 2: overrun */
264 u32 req_flags; /* bit 0: read bit:1 write */
265 u32 scsi_resid; /* residule length */
267 struct fc_rport *rport; /* remote port pointer */
268 struct fc_seq *seq_ptr; /* current sequence pointer */
272 u8 recov_retry; /* count of recovery retries */
273 struct fc_seq *recov_seq; /* sequence for REC or SRR */
276 * FC_FCP HELPER FUNCTIONS
277 *****************************/
278 static inline bool fc_fcp_is_read(const struct fc_fcp_pkt *fsp)
281 return fsp->cmd->sc_data_direction == DMA_FROM_DEVICE;
286 * Structure and function definitions for managing Fibre Channel Exchanges
289 * fc_exch holds state for one exchange and links to its active sequence.
291 * fc_seq holds the state for an individual sequence.
295 struct fc_exch_mgr_anchor;
296 extern u16 fc_cpu_mask; /* cpu mask for possible cpus */
303 u16 ssb_stat; /* status flags for sequence status block */
304 u16 cnt; /* frames sent so far on sequence */
305 u32 rec_data; /* FC-4 value for REC */
308 #define FC_EX_DONE (1 << 0) /* ep is completed */
309 #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */
314 * Locking notes: The ex_lock protects following items:
315 * state, esb_stat, f_ctl, seq.ssb_stat
317 * sequence allocation
320 struct fc_exch_mgr *em; /* exchange manager */
321 struct fc_exch_pool *pool; /* per cpu exches pool */
322 u32 state; /* internal driver state */
323 u16 xid; /* our exchange ID */
324 struct list_head ex_list; /* free or busy list linkage */
325 spinlock_t ex_lock; /* lock covering exchange state */
326 atomic_t ex_refcnt; /* reference counter */
327 struct delayed_work timeout_work; /* timer for upper level protocols */
328 struct fc_lport *lp; /* fc device instance */
329 u16 oxid; /* originator's exchange ID */
330 u16 rxid; /* responder's exchange ID */
331 u32 oid; /* originator's FCID */
332 u32 sid; /* source FCID */
333 u32 did; /* destination FCID */
334 u32 esb_stat; /* exchange status for ESB */
335 u32 r_a_tov; /* r_a_tov from rport (msec) */
336 u8 seq_id; /* next sequence ID to use */
337 u32 f_ctl; /* F_CTL flags for sequences */
338 u8 fh_type; /* frame type */
339 enum fc_class class; /* class of service */
340 struct fc_seq seq; /* single sequence */
342 * Handler for responses to this current exchange.
344 void (*resp)(struct fc_seq *, struct fc_frame *, void *);
345 void (*destructor)(struct fc_seq *, void *);
347 * arg is passed as void pointer to exchange
348 * resp and destructor handlers
352 #define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq)
354 struct libfc_function_template {
357 * Interface to send a FC frame
361 int (*frame_send)(struct fc_lport *lp, struct fc_frame *fp);
364 * Interface to send ELS/CT frames
368 struct fc_seq *(*elsct_send)(struct fc_lport *lport,
372 void (*resp)(struct fc_seq *,
375 void *arg, u32 timer_msec);
378 * Send the FC frame payload using a new exchange and sequence.
380 * The frame pointer with some of the header's fields must be
381 * filled before calling exch_seq_send(), those fields are,
388 * - parameter or relative offset
390 * The exchange response handler is set in this routine to resp()
391 * function pointer. It can be called in two scenarios: if a timeout
392 * occurs or if a response frame is received for the exchange. The
393 * fc_frame pointer in response handler will also indicate timeout
394 * as error using IS_ERR related macros.
396 * The exchange destructor handler is also set in this routine.
397 * The destructor handler is invoked by EM layer when exchange
398 * is about to free, this can be used by caller to free its
399 * resources along with exchange free.
401 * The arg is passed back to resp and destructor handler.
403 * The timeout value (in msec) for an exchange is set if non zero
404 * timer_msec argument is specified. The timer is canceled when
405 * it fires or when the exchange is done. The exchange timeout handler
406 * is registered by EM layer.
410 struct fc_seq *(*exch_seq_send)(struct fc_lport *lp,
412 void (*resp)(struct fc_seq *sp,
415 void (*destructor)(struct fc_seq *sp,
417 void *arg, unsigned int timer_msec);
420 * Sets up the DDP context for a given exchange id on the given
421 * scatterlist if LLD supports DDP for large receive.
425 int (*ddp_setup)(struct fc_lport *lp, u16 xid,
426 struct scatterlist *sgl, unsigned int sgc);
428 * Completes the DDP transfer and returns the length of data DDPed
429 * for the given exchange id.
433 int (*ddp_done)(struct fc_lport *lp, u16 xid);
435 * Send a frame using an existing sequence and exchange.
439 int (*seq_send)(struct fc_lport *lp, struct fc_seq *sp,
440 struct fc_frame *fp);
443 * Send an ELS response using infomation from a previous
444 * exchange and sequence.
448 void (*seq_els_rsp_send)(struct fc_seq *sp, enum fc_els_cmd els_cmd,
449 struct fc_seq_els_data *els_data);
452 * Abort an exchange and sequence. Generally called because of a
453 * exchange timeout or an abort from the upper layer.
455 * A timer_msec can be specified for abort timeout, if non-zero
456 * timer_msec value is specified then exchange resp handler
457 * will be called with timeout error if no response to abort.
461 int (*seq_exch_abort)(const struct fc_seq *req_sp,
462 unsigned int timer_msec);
465 * Indicate that an exchange/sequence tuple is complete and the memory
466 * allocated for the related objects may be freed.
470 void (*exch_done)(struct fc_seq *sp);
473 * Start a new sequence on the same exchange/sequence tuple.
477 struct fc_seq *(*seq_start_next)(struct fc_seq *sp);
480 * Reset an exchange manager, completing all sequences and exchanges.
481 * If s_id is non-zero, reset only exchanges originating from that FID.
482 * If d_id is non-zero, reset only exchanges sending to that FID.
486 void (*exch_mgr_reset)(struct fc_lport *,
490 * Flush the rport work queue. Generally used before shutdown.
494 void (*rport_flush_queue)(void);
497 * Receive a frame for a local port.
501 void (*lport_recv)(struct fc_lport *lp, struct fc_seq *sp,
502 struct fc_frame *fp);
505 * Reset the local port.
509 int (*lport_reset)(struct fc_lport *);
512 * Create a remote port with a given port ID
516 struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32);
519 * Initiates the RP state machine. It is called from the LP module.
520 * This function will issue the following commands to the N_Port
521 * identified by the FC ID provided.
529 int (*rport_login)(struct fc_rport_priv *);
532 * Logoff, and remove the rport from the transport if
533 * it had been added. This will send a LOGO to the target.
537 int (*rport_logoff)(struct fc_rport_priv *);
540 * Recieve a request from a remote port.
544 void (*rport_recv_req)(struct fc_seq *, struct fc_frame *,
548 * lookup an rport by it's port ID.
552 struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32);
555 * Destroy an rport after final kref_put().
556 * The argument is a pointer to the kref inside the fc_rport_priv.
558 void (*rport_destroy)(struct kref *);
561 * Send a fcp cmd from fsp pkt.
562 * Called with the SCSI host lock unlocked and irqs disabled.
564 * The resp handler is called when FCP_RSP received.
568 int (*fcp_cmd_send)(struct fc_lport *lp, struct fc_fcp_pkt *fsp,
569 void (*resp)(struct fc_seq *, struct fc_frame *fp,
573 * Cleanup the FCP layer, used durring link down and reset
577 void (*fcp_cleanup)(struct fc_lport *lp);
580 * Abort all I/O on a local port
584 void (*fcp_abort_io)(struct fc_lport *lp);
587 * Receive a request for the discovery layer.
591 void (*disc_recv_req)(struct fc_seq *,
592 struct fc_frame *, struct fc_lport *);
595 * Start discovery for a local port.
599 void (*disc_start)(void (*disc_callback)(struct fc_lport *,
604 * Stop discovery for a given lport. This will remove
605 * all discovered rports
609 void (*disc_stop) (struct fc_lport *);
612 * Stop discovery for a given lport. This will block
613 * until all discovered rports are deleted from the
618 void (*disc_stop_final) (struct fc_lport *);
621 /* information used by the discovery layer */
623 unsigned char retry_count;
624 unsigned char pending;
625 unsigned char requested;
626 unsigned short seq_count;
627 unsigned char buf_len;
630 void (*disc_callback)(struct fc_lport *,
633 struct list_head rports;
634 struct fc_lport *lport;
635 struct mutex disc_mutex;
636 struct fc_gpn_ft_resp partial_buf; /* partial name buffer */
637 struct delayed_work disc_work;
641 struct list_head list;
644 struct Scsi_Host *host;
645 struct list_head ema_list;
646 struct list_head vports; /* child vports if N_Port */
647 struct fc_vport *vport; /* parent vport if VN_Port */
648 struct fc_rport_priv *dns_rp;
649 struct fc_rport_priv *ptp_rp;
653 /* Operational Information */
654 struct libfc_function_template tt;
657 enum fc_lport_state state;
658 unsigned long boot_time;
660 struct fc_host_statistics host_stats;
661 struct fcoe_dev_stats *dev_stats;
668 u32 sg_supp:1; /* scatter gather supported */
669 u32 seq_offload:1; /* seq offload supported */
670 u32 crc_offload:1; /* crc offload supported */
671 u32 lro_enabled:1; /* large receive offload */
672 u32 does_npiv:1; /* supports multiple vports */
673 u32 npiv_enabled:1; /* switch/fabric allows NPIV */
674 u32 mfs; /* max FC payload size */
675 unsigned int service_params;
676 unsigned int e_d_tov;
677 unsigned int r_a_tov;
679 u8 max_rport_retry_count;
681 u16 link_supported_speeds;
682 u16 lro_xid; /* max xid for fcoe lro */
683 unsigned int lso_max; /* max large send size */
684 struct fc_ns_fts fcts; /* FC-4 type masks */
685 struct fc_els_rnid_gen rnid_gen; /* RNID information */
688 struct mutex lp_mutex;
691 struct delayed_work retry_work;
695 * FC_LPORT HELPER FUNCTIONS
696 *****************************/
697 static inline int fc_lport_test_ready(struct fc_lport *lp)
699 return lp->state == LPORT_ST_READY;
702 static inline void fc_set_wwnn(struct fc_lport *lp, u64 wwnn)
707 static inline void fc_set_wwpn(struct fc_lport *lp, u64 wwnn)
712 static inline void fc_lport_state_enter(struct fc_lport *lp,
713 enum fc_lport_state state)
715 if (state != lp->state)
720 static inline int fc_lport_init_stats(struct fc_lport *lp)
722 /* allocate per cpu stats block */
723 lp->dev_stats = alloc_percpu(struct fcoe_dev_stats);
729 static inline void fc_lport_free_stats(struct fc_lport *lp)
731 free_percpu(lp->dev_stats);
734 static inline struct fcoe_dev_stats *fc_lport_get_stats(struct fc_lport *lp)
736 return per_cpu_ptr(lp->dev_stats, smp_processor_id());
739 static inline void *lport_priv(const struct fc_lport *lp)
741 return (void *)(lp + 1);
745 * libfc_host_alloc() - Allocate a Scsi_Host with room for the fc_lport
746 * @sht: ptr to the scsi host templ
747 * @priv_size: size of private data after fc_lport
749 * Returns: libfc lport
751 static inline struct fc_lport *
752 libfc_host_alloc(struct scsi_host_template *sht, int priv_size)
754 struct fc_lport *lport;
755 struct Scsi_Host *shost;
757 shost = scsi_host_alloc(sht, sizeof(*lport) + priv_size);
760 lport = shost_priv(shost);
762 INIT_LIST_HEAD(&lport->ema_list);
763 INIT_LIST_HEAD(&lport->vports);
769 *****************************/
770 int fc_lport_init(struct fc_lport *lp);
773 * Destroy the specified local port by finding and freeing all
774 * fc_rports associated with it and then by freeing the fc_lport
777 int fc_lport_destroy(struct fc_lport *lp);
780 * Logout the specified local port from the fabric
782 int fc_fabric_logoff(struct fc_lport *lp);
785 * Initiate the LP state machine. This handler will use fc_host_attr
786 * to store the FLOGI service parameters, so fc_host_attr must be
787 * initialized before calling this handler.
789 int fc_fabric_login(struct fc_lport *lp);
792 * The link is up for the given local port.
794 void __fc_linkup(struct fc_lport *);
795 void fc_linkup(struct fc_lport *);
798 * Link is down for the given local port.
800 void __fc_linkdown(struct fc_lport *);
801 void fc_linkdown(struct fc_lport *);
804 * Configure the local port.
806 int fc_lport_config(struct fc_lport *);
809 * Reset the local port.
811 int fc_lport_reset(struct fc_lport *);
814 * Set the mfs or reset
816 int fc_set_mfs(struct fc_lport *lp, u32 mfs);
819 * Allocate a new lport struct for an NPIV VN_Port
821 struct fc_lport *libfc_vport_create(struct fc_vport *vport, int privsize);
824 * Find an NPIV VN_Port by port ID
826 struct fc_lport *fc_vport_id_lookup(struct fc_lport *n_port, u32 port_id);
829 * NPIV VN_Port link state management
831 void fc_vport_setlink(struct fc_lport *vn_port);
832 void fc_vports_linkchange(struct fc_lport *n_port);
835 * Issue fc pass-thru request via bsg interface
837 int fc_lport_bsg_request(struct fc_bsg_job *job);
842 *****************************/
843 int fc_rport_init(struct fc_lport *lp);
844 void fc_rport_terminate_io(struct fc_rport *rp);
848 *****************************/
849 int fc_disc_init(struct fc_lport *lp);
854 *****************************/
856 * Initialize the SCSI block of libfc
858 int fc_fcp_init(struct fc_lport *);
861 * This section provides an API which allows direct interaction
862 * with the SCSI-ml. Each of these functions satisfies a function
863 * pointer defined in Scsi_Host and therefore is always called
864 * directly from the SCSI-ml.
866 int fc_queuecommand(struct scsi_cmnd *sc_cmd,
867 void (*done)(struct scsi_cmnd *));
870 * Send an ABTS frame to the target device. The sc_cmd argument
871 * is a pointer to the SCSI command to be aborted.
873 int fc_eh_abort(struct scsi_cmnd *sc_cmd);
876 * Reset a LUN by sending send the tm cmd to the target.
878 int fc_eh_device_reset(struct scsi_cmnd *sc_cmd);
881 * Reset the host adapter.
883 int fc_eh_host_reset(struct scsi_cmnd *sc_cmd);
886 * Check rport status.
888 int fc_slave_alloc(struct scsi_device *sdev);
891 * Adjust the queue depth.
893 int fc_change_queue_depth(struct scsi_device *sdev, int qdepth, int reason);
896 * Change the tag type.
898 int fc_change_queue_type(struct scsi_device *sdev, int tag_type);
901 * Free memory pools used by the FCP layer.
903 void fc_fcp_destroy(struct fc_lport *);
907 *****************************/
909 * Initializes ELS/CT interface
911 int fc_elsct_init(struct fc_lport *lp);
912 struct fc_seq *fc_elsct_send(struct fc_lport *lport,
916 void (*resp)(struct fc_seq *,
919 void *arg, u32 timer_msec);
920 void fc_lport_flogi_resp(struct fc_seq *, struct fc_frame *, void *);
921 void fc_lport_logo_resp(struct fc_seq *, struct fc_frame *, void *);
925 * EXCHANGE MANAGER LAYER
926 *****************************/
928 * Initializes Exchange Manager related
929 * function pointers in struct libfc_function_template.
931 int fc_exch_init(struct fc_lport *lp);
934 * Adds Exchange Manager (EM) mp to lport.
936 * Adds specified mp to lport using struct fc_exch_mgr_anchor,
937 * the struct fc_exch_mgr_anchor allows same EM sharing by
938 * more than one lport with their specified match function,
939 * the match function is used in allocating exchange from
942 struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *lport,
943 struct fc_exch_mgr *mp,
944 bool (*match)(struct fc_frame *));
947 * Deletes Exchange Manager (EM) from lport by removing
948 * its anchor ema from lport.
950 * If removed anchor ema was the last user of its associated EM
951 * then also destroys associated EM.
953 void fc_exch_mgr_del(struct fc_exch_mgr_anchor *ema);
956 * Clone an exchange manager list, getting reference holds for each EM.
957 * This is for use with NPIV and sharing the X_ID space between VN_Ports.
959 int fc_exch_mgr_list_clone(struct fc_lport *src, struct fc_lport *dst);
962 * Allocates an Exchange Manager (EM).
964 * The EM manages exchanges for their allocation and
965 * free, also allows exchange lookup for received
968 * The class is used for initializing FC class of
969 * allocated exchange from EM.
971 * The min_xid and max_xid will limit new
972 * exchange ID (XID) within this range for
974 * The LLD may choose to have multiple EMs,
975 * e.g. one EM instance per CPU receive thread in LLD.
977 * Specified match function is used in allocating exchanges
978 * from newly allocated EM.
980 struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lp,
984 bool (*match)(struct fc_frame *));
987 * Free all exchange managers of a lport.
989 void fc_exch_mgr_free(struct fc_lport *lport);
992 * Receive a frame on specified local port and exchange manager.
994 void fc_exch_recv(struct fc_lport *lp, struct fc_frame *fp);
997 * Reset all EMs of a lport, releasing its all sequences and
998 * exchanges. If sid is non-zero, then reset only exchanges
999 * we sourced from that FID. If did is non-zero, reset only
1000 * exchanges destined to that FID.
1002 void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id);
1005 * Functions for fc_functions_template
1007 void fc_get_host_speed(struct Scsi_Host *shost);
1008 void fc_get_host_port_type(struct Scsi_Host *shost);
1009 void fc_get_host_port_state(struct Scsi_Host *shost);
1010 void fc_set_rport_loss_tmo(struct fc_rport *rport, u32 timeout);
1011 struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *);
1013 #endif /* _LIBFC_H_ */