diff options
Diffstat (limited to 'libdde_linux26/contrib/include/scsi/libfc.h')
| -rw-r--r-- | libdde_linux26/contrib/include/scsi/libfc.h | 960 |
1 files changed, 0 insertions, 960 deletions
diff --git a/libdde_linux26/contrib/include/scsi/libfc.h b/libdde_linux26/contrib/include/scsi/libfc.h deleted file mode 100644 index a2e126b8..00000000 --- a/libdde_linux26/contrib/include/scsi/libfc.h +++ /dev/null @@ -1,960 +0,0 @@ -/* - * Copyright(c) 2007 Intel Corporation. All rights reserved. - * - * This program is free software; you can redistribute it and/or modify it - * under the terms and conditions of the GNU General Public License, - * version 2, as published by the Free Software Foundation. - * - * This program is distributed in the hope it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for - * more details. - * - * You should have received a copy of the GNU General Public License along with - * this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. - * - * Maintained at www.Open-FCoE.org - */ - -#ifndef _LIBFC_H_ -#define _LIBFC_H_ - -#include <linux/timer.h> -#include <linux/if.h> - -#include <scsi/scsi_transport.h> -#include <scsi/scsi_transport_fc.h> - -#include <scsi/fc/fc_fcp.h> -#include <scsi/fc/fc_ns.h> -#include <scsi/fc/fc_els.h> -#include <scsi/fc/fc_gs.h> - -#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 - -/* - * libfc error codes - */ -#define FC_NO_ERR 0 /* no error */ -#define FC_EX_TIMEOUT 1 /* Exchange timeout */ -#define FC_EX_CLOSED 2 /* Exchange closed */ - -/* some helpful macros */ - -#define ntohll(x) be64_to_cpu(x) -#define htonll(x) cpu_to_be64(x) - -#define ntoh24(p) (((p)[0] << 16) | ((p)[1] << 8) | ((p)[2])) - -#define hton24(p, v) do { \ - p[0] = (((v) >> 16) & 0xFF); \ - p[1] = (((v) >> 8) & 0xFF); \ - p[2] = ((v) & 0xFF); \ - } while (0) - -/* - * FC HBA status - */ -enum fc_lport_state { - LPORT_ST_NONE = 0, - LPORT_ST_FLOGI, - LPORT_ST_DNS, - LPORT_ST_RPN_ID, - LPORT_ST_RFT_ID, - LPORT_ST_SCR, - LPORT_ST_READY, - LPORT_ST_LOGO, - LPORT_ST_RESET -}; - -enum fc_disc_event { - DISC_EV_NONE = 0, - DISC_EV_SUCCESS, - DISC_EV_FAILED -}; - -enum fc_rport_state { - RPORT_ST_NONE = 0, - RPORT_ST_INIT, /* initialized */ - RPORT_ST_PLOGI, /* waiting for PLOGI completion */ - RPORT_ST_PRLI, /* waiting for PRLI completion */ - RPORT_ST_RTV, /* waiting for RTV completion */ - RPORT_ST_READY, /* ready for use */ - RPORT_ST_LOGO, /* port logout sent */ -}; - -enum fc_rport_trans_state { - FC_PORTSTATE_ROGUE, - FC_PORTSTATE_REAL, -}; - -/** - * struct fc_disc_port - temporary discovery port to hold rport identifiers - * @lp: Fibre Channel host port instance - * @peers: node for list management during discovery and RSCN processing - * @ids: identifiers structure to pass to fc_remote_port_add() - * @rport_work: work struct for starting the rport state machine - */ -struct fc_disc_port { - struct fc_lport *lp; - struct list_head peers; - struct fc_rport_identifiers ids; - struct work_struct rport_work; -}; - -enum fc_rport_event { - RPORT_EV_NONE = 0, - RPORT_EV_CREATED, - RPORT_EV_FAILED, - RPORT_EV_STOP, - RPORT_EV_LOGO -}; - -struct fc_rport_operations { - void (*event_callback)(struct fc_lport *, struct fc_rport *, - enum fc_rport_event); -}; - -/** - * struct fc_rport_libfc_priv - libfc internal information about a remote port - * @local_port: Fibre Channel host port instance - * @rp_state: state tracks progress of PLOGI, PRLI, and RTV exchanges - * @flags: REC and RETRY supported flags - * @max_seq: maximum number of concurrent sequences - * @retries: retry count in current state - * @e_d_tov: error detect timeout value (in msec) - * @r_a_tov: resource allocation timeout value (in msec) - * @rp_mutex: mutex protects rport - * @retry_work: - * @event_callback: Callback for rport READY, FAILED or LOGO - */ -struct fc_rport_libfc_priv { - struct fc_lport *local_port; - enum fc_rport_state rp_state; - u16 flags; - #define FC_RP_FLAGS_REC_SUPPORTED (1 << 0) - #define FC_RP_FLAGS_RETRY (1 << 1) - u16 max_seq; - unsigned int retries; - unsigned int e_d_tov; - unsigned int r_a_tov; - enum fc_rport_trans_state trans_state; - struct mutex rp_mutex; - struct delayed_work retry_work; - enum fc_rport_event event; - struct fc_rport_operations *ops; - struct list_head peers; - struct work_struct event_work; -}; - -#define PRIV_TO_RPORT(x) \ - (struct fc_rport *)((void *)x - sizeof(struct fc_rport)); -#define RPORT_TO_PRIV(x) \ - (struct fc_rport_libfc_priv *)((void *)x + sizeof(struct fc_rport)); - -struct fc_rport *fc_rport_rogue_create(struct fc_disc_port *); - -static inline void fc_rport_set_name(struct fc_rport *rport, u64 wwpn, u64 wwnn) -{ - rport->node_name = wwnn; - rport->port_name = wwpn; -} - -/* - * fcoe stats structure - */ -struct fcoe_dev_stats { - u64 SecondsSinceLastReset; - u64 TxFrames; - u64 TxWords; - u64 RxFrames; - u64 RxWords; - u64 ErrorFrames; - u64 DumpedFrames; - u64 LinkFailureCount; - u64 LossOfSignalCount; - u64 InvalidTxWordCount; - u64 InvalidCRCCount; - u64 InputRequests; - u64 OutputRequests; - u64 ControlRequests; - u64 InputMegabytes; - u64 OutputMegabytes; -}; - -/* - * els data is used for passing ELS respone specific - * data to send ELS response mainly using infomation - * in exchange and sequence in EM layer. - */ -struct fc_seq_els_data { - struct fc_frame *fp; - enum fc_els_rjt_reason reason; - enum fc_els_rjt_explan explan; -}; - -/* - * FCP request structure, one for each scsi cmd request - */ -struct fc_fcp_pkt { - /* - * housekeeping stuff - */ - struct fc_lport *lp; /* handle to hba struct */ - u16 state; /* scsi_pkt state state */ - u16 tgt_flags; /* target flags */ - atomic_t ref_cnt; /* fcp pkt ref count */ - spinlock_t scsi_pkt_lock; /* Must be taken before the host lock - * if both are held at the same time */ - /* - * SCSI I/O related stuff - */ - struct scsi_cmnd *cmd; /* scsi command pointer. set/clear - * under host lock */ - struct list_head list; /* tracks queued commands. access under - * host lock */ - /* - * timeout related stuff - */ - struct timer_list timer; /* command timer */ - struct completion tm_done; - int wait_for_comp; - unsigned long start_time; /* start jiffie */ - unsigned long end_time; /* end jiffie */ - unsigned long last_pkt_time; /* jiffies of last frame received */ - - /* - * scsi cmd and data transfer information - */ - u32 data_len; - /* - * transport related veriables - */ - struct fcp_cmnd cdb_cmd; - size_t xfer_len; - u32 xfer_contig_end; /* offset of end of contiguous xfer */ - u16 max_payload; /* max payload size in bytes */ - - /* - * scsi/fcp return status - */ - u32 io_status; /* SCSI result upper 24 bits */ - u8 cdb_status; - u8 status_code; /* FCP I/O status */ - /* bit 3 Underrun bit 2: overrun */ - u8 scsi_comp_flags; - u32 req_flags; /* bit 0: read bit:1 write */ - u32 scsi_resid; /* residule length */ - - struct fc_rport *rport; /* remote port pointer */ - struct fc_seq *seq_ptr; /* current sequence pointer */ - /* - * Error Processing - */ - u8 recov_retry; /* count of recovery retries */ - struct fc_seq *recov_seq; /* sequence for REC or SRR */ -}; - -/* - * Structure and function definitions for managing Fibre Channel Exchanges - * and Sequences - * - * fc_exch holds state for one exchange and links to its active sequence. - * - * fc_seq holds the state for an individual sequence. - */ - -struct fc_exch_mgr; - -/* - * Sequence. - */ -struct fc_seq { - u8 id; /* seq ID */ - u16 ssb_stat; /* status flags for sequence status block */ - u16 cnt; /* frames sent so far on sequence */ - u32 rec_data; /* FC-4 value for REC */ -}; - -#define FC_EX_DONE (1 << 0) /* ep is completed */ -#define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ - -/* - * Exchange. - * - * Locking notes: The ex_lock protects following items: - * state, esb_stat, f_ctl, seq.ssb_stat - * seq_id - * sequence allocation - */ -struct fc_exch { - struct fc_exch_mgr *em; /* exchange manager */ - u32 state; /* internal driver state */ - u16 xid; /* our exchange ID */ - struct list_head ex_list; /* free or busy list linkage */ - spinlock_t ex_lock; /* lock covering exchange state */ - atomic_t ex_refcnt; /* reference counter */ - struct delayed_work timeout_work; /* timer for upper level protocols */ - struct fc_lport *lp; /* fc device instance */ - u16 oxid; /* originator's exchange ID */ - u16 rxid; /* responder's exchange ID */ - u32 oid; /* originator's FCID */ - u32 sid; /* source FCID */ - u32 did; /* destination FCID */ - u32 esb_stat; /* exchange status for ESB */ - u32 r_a_tov; /* r_a_tov from rport (msec) */ - u8 seq_id; /* next sequence ID to use */ - u32 f_ctl; /* F_CTL flags for sequences */ - u8 fh_type; /* frame type */ - enum fc_class class; /* class of service */ - struct fc_seq seq; /* single sequence */ - /* - * Handler for responses to this current exchange. - */ - void (*resp)(struct fc_seq *, struct fc_frame *, void *); - void (*destructor)(struct fc_seq *, void *); - /* - * arg is passed as void pointer to exchange - * resp and destructor handlers - */ - void *arg; -}; -#define fc_seq_exch(sp) container_of(sp, struct fc_exch, seq) - -struct libfc_function_template { - - /* - * Interface to send a FC frame - * - * STATUS: REQUIRED - */ - int (*frame_send)(struct fc_lport *lp, struct fc_frame *fp); - - /* - * Interface to send ELS/CT frames - * - * STATUS: OPTIONAL - */ - struct fc_seq *(*elsct_send)(struct fc_lport *lport, - struct fc_rport *rport, - struct fc_frame *fp, - unsigned int op, - void (*resp)(struct fc_seq *, - struct fc_frame *fp, - void *arg), - void *arg, u32 timer_msec); - - /* - * Send the FC frame payload using a new exchange and sequence. - * - * The frame pointer with some of the header's fields must be - * filled before calling exch_seq_send(), those fields are, - * - * - routing control - * - FC port did - * - FC port sid - * - FC header type - * - frame control - * - parameter or relative offset - * - * The exchange response handler is set in this routine to resp() - * function pointer. It can be called in two scenarios: if a timeout - * occurs or if a response frame is received for the exchange. The - * fc_frame pointer in response handler will also indicate timeout - * as error using IS_ERR related macros. - * - * The exchange destructor handler is also set in this routine. - * The destructor handler is invoked by EM layer when exchange - * is about to free, this can be used by caller to free its - * resources along with exchange free. - * - * The arg is passed back to resp and destructor handler. - * - * The timeout value (in msec) for an exchange is set if non zero - * timer_msec argument is specified. The timer is canceled when - * it fires or when the exchange is done. The exchange timeout handler - * is registered by EM layer. - * - * STATUS: OPTIONAL - */ - struct fc_seq *(*exch_seq_send)(struct fc_lport *lp, - struct fc_frame *fp, - void (*resp)(struct fc_seq *sp, - struct fc_frame *fp, - void *arg), - void (*destructor)(struct fc_seq *sp, - void *arg), - void *arg, unsigned int timer_msec); - - /* - * Send a frame using an existing sequence and exchange. - * - * STATUS: OPTIONAL - */ - int (*seq_send)(struct fc_lport *lp, struct fc_seq *sp, - struct fc_frame *fp); - - /* - * Send an ELS response using infomation from a previous - * exchange and sequence. - * - * STATUS: OPTIONAL - */ - void (*seq_els_rsp_send)(struct fc_seq *sp, enum fc_els_cmd els_cmd, - struct fc_seq_els_data *els_data); - - /* - * Abort an exchange and sequence. Generally called because of a - * exchange timeout or an abort from the upper layer. - * - * A timer_msec can be specified for abort timeout, if non-zero - * timer_msec value is specified then exchange resp handler - * will be called with timeout error if no response to abort. - * - * STATUS: OPTIONAL - */ - int (*seq_exch_abort)(const struct fc_seq *req_sp, - unsigned int timer_msec); - - /* - * Indicate that an exchange/sequence tuple is complete and the memory - * allocated for the related objects may be freed. - * - * STATUS: OPTIONAL - */ - void (*exch_done)(struct fc_seq *sp); - - /* - * Assigns a EM and a free XID for an new exchange and then - * allocates a new exchange and sequence pair. - * The fp can be used to determine free XID. - * - * STATUS: OPTIONAL - */ - struct fc_exch *(*exch_get)(struct fc_lport *lp, struct fc_frame *fp); - - /* - * Release previously assigned XID by exch_get API. - * The LLD may implement this if XID is assigned by LLD - * in exch_get(). - * - * STATUS: OPTIONAL - */ - void (*exch_put)(struct fc_lport *lp, struct fc_exch_mgr *mp, - u16 ex_id); - - /* - * Start a new sequence on the same exchange/sequence tuple. - * - * STATUS: OPTIONAL - */ - struct fc_seq *(*seq_start_next)(struct fc_seq *sp); - - /* - * Reset an exchange manager, completing all sequences and exchanges. - * If s_id is non-zero, reset only exchanges originating from that FID. - * If d_id is non-zero, reset only exchanges sending to that FID. - * - * STATUS: OPTIONAL - */ - void (*exch_mgr_reset)(struct fc_lport *, - u32 s_id, u32 d_id); - - /* - * Flush the rport work queue. Generally used before shutdown. - * - * STATUS: OPTIONAL - */ - void (*rport_flush_queue)(void); - - /* - * Receive a frame for a local port. - * - * STATUS: OPTIONAL - */ - void (*lport_recv)(struct fc_lport *lp, struct fc_seq *sp, - struct fc_frame *fp); - - /* - * Reset the local port. - * - * STATUS: OPTIONAL - */ - int (*lport_reset)(struct fc_lport *); - - /* - * Create a remote port - */ - struct fc_rport *(*rport_create)(struct fc_disc_port *); - - /* - * Initiates the RP state machine. It is called from the LP module. - * This function will issue the following commands to the N_Port - * identified by the FC ID provided. - * - * - PLOGI - * - PRLI - * - RTV - * - * STATUS: OPTIONAL - */ - int (*rport_login)(struct fc_rport *rport); - - /* - * Logoff, and remove the rport from the transport if - * it had been added. This will send a LOGO to the target. - * - * STATUS: OPTIONAL - */ - int (*rport_logoff)(struct fc_rport *rport); - - /* - * Recieve a request from a remote port. - * - * STATUS: OPTIONAL - */ - void (*rport_recv_req)(struct fc_seq *, struct fc_frame *, - struct fc_rport *); - - /* - * lookup an rport by it's port ID. - * - * STATUS: OPTIONAL - */ - struct fc_rport *(*rport_lookup)(const struct fc_lport *, u32); - - /* - * Send a fcp cmd from fsp pkt. - * Called with the SCSI host lock unlocked and irqs disabled. - * - * The resp handler is called when FCP_RSP received. - * - * STATUS: OPTIONAL - */ - int (*fcp_cmd_send)(struct fc_lport *lp, struct fc_fcp_pkt *fsp, - void (*resp)(struct fc_seq *, struct fc_frame *fp, - void *arg)); - - /* - * Cleanup the FCP layer, used durring link down and reset - * - * STATUS: OPTIONAL - */ - void (*fcp_cleanup)(struct fc_lport *lp); - - /* - * Abort all I/O on a local port - * - * STATUS: OPTIONAL - */ - void (*fcp_abort_io)(struct fc_lport *lp); - - /* - * Receive a request for the discovery layer. - * - * STATUS: OPTIONAL - */ - void (*disc_recv_req)(struct fc_seq *, - struct fc_frame *, struct fc_lport *); - - /* - * Start discovery for a local port. - * - * STATUS: OPTIONAL - */ - void (*disc_start)(void (*disc_callback)(struct fc_lport *, - enum fc_disc_event), - struct fc_lport *); - - /* - * Stop discovery for a given lport. This will remove - * all discovered rports - * - * STATUS: OPTIONAL - */ - void (*disc_stop) (struct fc_lport *); - - /* - * Stop discovery for a given lport. This will block - * until all discovered rports are deleted from the - * FC transport class - * - * STATUS: OPTIONAL - */ - void (*disc_stop_final) (struct fc_lport *); -}; - -/* information used by the discovery layer */ -struct fc_disc { - unsigned char retry_count; - unsigned char delay; - unsigned char pending; - unsigned char requested; - unsigned short seq_count; - unsigned char buf_len; - enum fc_disc_event event; - - void (*disc_callback)(struct fc_lport *, - enum fc_disc_event); - - struct list_head rports; - struct fc_lport *lport; - struct mutex disc_mutex; - struct fc_gpn_ft_resp partial_buf; /* partial name buffer */ - struct delayed_work disc_work; -}; - -struct fc_lport { - struct list_head list; - - /* Associations */ - struct Scsi_Host *host; - struct fc_exch_mgr *emp; - struct fc_rport *dns_rp; - struct fc_rport *ptp_rp; - void *scsi_priv; - struct fc_disc disc; - - /* Operational Information */ - struct libfc_function_template tt; - u8 link_up; - u8 qfull; - enum fc_lport_state state; - unsigned long boot_time; - - struct fc_host_statistics host_stats; - struct fcoe_dev_stats *dev_stats[NR_CPUS]; - u64 wwpn; - u64 wwnn; - u8 retry_count; - - /* Capabilities */ - u32 sg_supp:1; /* scatter gather supported */ - u32 seq_offload:1; /* seq offload supported */ - u32 crc_offload:1; /* crc offload supported */ - u32 lro_enabled:1; /* large receive offload */ - u32 mfs; /* max FC payload size */ - unsigned int service_params; - unsigned int e_d_tov; - unsigned int r_a_tov; - u8 max_retry_count; - u16 link_speed; - u16 link_supported_speeds; - u16 lro_xid; /* max xid for fcoe lro */ - struct fc_ns_fts fcts; /* FC-4 type masks */ - struct fc_els_rnid_gen rnid_gen; /* RNID information */ - - /* Semaphores */ - struct mutex lp_mutex; - - /* Miscellaneous */ - struct delayed_work retry_work; - struct delayed_work disc_work; -}; - -/* - * 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; -} - -static inline void fc_set_wwnn(struct fc_lport *lp, u64 wwnn) -{ - lp->wwnn = wwnn; -} - -static inline void fc_set_wwpn(struct fc_lport *lp, u64 wwnn) -{ - lp->wwpn = wwnn; -} - -static inline void fc_lport_state_enter(struct fc_lport *lp, - enum fc_lport_state state) -{ - if (state != lp->state) - lp->retry_count = 0; - lp->state = state; -} - - -/* - * LOCAL PORT LAYER - *****************************/ -int fc_lport_init(struct fc_lport *lp); - -/* - * Destroy the specified local port by finding and freeing all - * fc_rports associated with it and then by freeing the fc_lport - * itself. - */ -int fc_lport_destroy(struct fc_lport *lp); - -/* - * Logout the specified local port from the fabric - */ -int fc_fabric_logoff(struct fc_lport *lp); - -/* - * Initiate the LP state machine. This handler will use fc_host_attr - * to store the FLOGI service parameters, so fc_host_attr must be - * initialized before calling this handler. - */ -int fc_fabric_login(struct fc_lport *lp); - -/* - * The link is up for the given local port. - */ -void fc_linkup(struct fc_lport *); - -/* - * Link is down for the given local port. - */ -void fc_linkdown(struct fc_lport *); - -/* - * Configure the local port. - */ -int fc_lport_config(struct fc_lport *); - -/* - * Reset the local port. - */ -int fc_lport_reset(struct fc_lport *); - -/* - * Set the mfs or reset - */ -int fc_set_mfs(struct fc_lport *lp, u32 mfs); - - -/* - * REMOTE PORT LAYER - *****************************/ -int fc_rport_init(struct fc_lport *lp); -void fc_rport_terminate_io(struct fc_rport *rp); - -/* - * DISCOVERY LAYER - *****************************/ -int fc_disc_init(struct fc_lport *lp); - - -/* - * SCSI LAYER - *****************************/ -/* - * Initialize the SCSI block of libfc - */ -int fc_fcp_init(struct fc_lport *); - -/* - * This section provides an API which allows direct interaction - * with the SCSI-ml. Each of these functions satisfies a function - * pointer defined in Scsi_Host and therefore is always called - * directly from the SCSI-ml. - */ -int fc_queuecommand(struct scsi_cmnd *sc_cmd, - void (*done)(struct scsi_cmnd *)); - -/* - * complete processing of a fcp packet - * - * This function may sleep if a fsp timer is pending. - * The host lock must not be held by caller. - */ -void fc_fcp_complete(struct fc_fcp_pkt *fsp); - -/* - * Send an ABTS frame to the target device. The sc_cmd argument - * is a pointer to the SCSI command to be aborted. - */ -int fc_eh_abort(struct scsi_cmnd *sc_cmd); - -/* - * Reset a LUN by sending send the tm cmd to the target. - */ -int fc_eh_device_reset(struct scsi_cmnd *sc_cmd); - -/* - * Reset the host adapter. - */ -int fc_eh_host_reset(struct scsi_cmnd *sc_cmd); - -/* - * Check rport status. - */ -int fc_slave_alloc(struct scsi_device *sdev); - -/* - * Adjust the queue depth. - */ -int fc_change_queue_depth(struct scsi_device *sdev, int qdepth); - -/* - * Change the tag type. - */ -int fc_change_queue_type(struct scsi_device *sdev, int tag_type); - -/* - * Free memory pools used by the FCP layer. - */ -void fc_fcp_destroy(struct fc_lport *); - -/* - * ELS/CT interface - *****************************/ -/* - * Initializes ELS/CT interface - */ -int fc_elsct_init(struct fc_lport *lp); - - -/* - * EXCHANGE MANAGER LAYER - *****************************/ -/* - * Initializes Exchange Manager related - * function pointers in struct libfc_function_template. - */ -int fc_exch_init(struct fc_lport *lp); - -/* - * Allocates an Exchange Manager (EM). - * - * The EM manages exchanges for their allocation and - * free, also allows exchange lookup for received - * frame. - * - * The class is used for initializing FC class of - * allocated exchange from EM. - * - * The min_xid and max_xid will limit new - * exchange ID (XID) within this range for - * a new exchange. - * The LLD may choose to have multiple EMs, - * e.g. one EM instance per CPU receive thread in LLD. - * The LLD can use exch_get() of struct libfc_function_template - * to specify XID for a new exchange within - * a specified EM instance. - * - * The em_idx to uniquely identify an EM instance. - */ -struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *lp, - enum fc_class class, - u16 min_xid, - u16 max_xid); - -/* - * Free an exchange manager. - */ -void fc_exch_mgr_free(struct fc_exch_mgr *mp); - -/* - * Receive a frame on specified local port and exchange manager. - */ -void fc_exch_recv(struct fc_lport *lp, struct fc_exch_mgr *mp, - struct fc_frame *fp); - -/* - * This function is for exch_seq_send function pointer in - * struct libfc_function_template, see comment block on - * exch_seq_send for description of this function. - */ -struct fc_seq *fc_exch_seq_send(struct fc_lport *lp, - struct fc_frame *fp, - void (*resp)(struct fc_seq *sp, - struct fc_frame *fp, - void *arg), - void (*destructor)(struct fc_seq *sp, - void *arg), - void *arg, u32 timer_msec); - -/* - * send a frame using existing sequence and exchange. - */ -int fc_seq_send(struct fc_lport *lp, struct fc_seq *sp, struct fc_frame *fp); - -/* - * Send ELS response using mainly infomation - * in exchange and sequence in EM layer. - */ -void fc_seq_els_rsp_send(struct fc_seq *sp, enum fc_els_cmd els_cmd, - struct fc_seq_els_data *els_data); - -/* - * This function is for seq_exch_abort function pointer in - * struct libfc_function_template, see comment block on - * seq_exch_abort for description of this function. - */ -int fc_seq_exch_abort(const struct fc_seq *req_sp, unsigned int timer_msec); - -/* - * Indicate that an exchange/sequence tuple is complete and the memory - * allocated for the related objects may be freed. - */ -void fc_exch_done(struct fc_seq *sp); - -/* - * Assigns a EM and XID for a frame and then allocates - * a new exchange and sequence pair. - * The fp can be used to determine free XID. - */ -struct fc_exch *fc_exch_get(struct fc_lport *lp, struct fc_frame *fp); - -/* - * Allocate a new exchange and sequence pair. - * if ex_id is zero then next free exchange id - * from specified exchange manger mp will be assigned. - */ -struct fc_exch *fc_exch_alloc(struct fc_exch_mgr *mp, - struct fc_frame *fp, u16 ex_id); -/* - * Start a new sequence on the same exchange as the supplied sequence. - */ -struct fc_seq *fc_seq_start_next(struct fc_seq *sp); - -/* - * Reset an exchange manager, completing all sequences and exchanges. - * If s_id is non-zero, reset only exchanges originating from that FID. - * If d_id is non-zero, reset only exchanges sending to that FID. - */ -void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); - -/* - * Functions for fc_functions_template - */ -void fc_get_host_speed(struct Scsi_Host *shost); -void fc_get_host_port_type(struct Scsi_Host *shost); -void fc_get_host_port_state(struct Scsi_Host *shost); -void fc_set_rport_loss_tmo(struct fc_rport *rport, u32 timeout); -struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *); - -/* - * module setup functions. - */ -int fc_setup_exch_mgr(void); -void fc_destroy_exch_mgr(void); -int fc_setup_rport(void); -void fc_destroy_rport(void); - -#endif /* _LIBFC_H_ */ |