diff options
Diffstat (limited to 'include/scsi/libfc.h')
| -rw-r--r-- | include/scsi/libfc.h | 206 |
1 files changed, 36 insertions, 170 deletions
diff --git a/include/scsi/libfc.h b/include/scsi/libfc.h index 7428a53257ca..96dd0b3f70d7 100644 --- a/include/scsi/libfc.h +++ b/include/scsi/libfc.h @@ -44,6 +44,11 @@ #define FC_NO_ERR 0 /* no error */ #define FC_EX_TIMEOUT 1 /* Exchange timeout */ #define FC_EX_CLOSED 2 /* Exchange closed */ +#define FC_EX_ALLOC_ERR 3 /* Exchange allocation failed */ +#define FC_EX_XMIT_ERR 4 /* Exchange transmit failed */ +#define FC_EX_ELS_RJT 5 /* ELS rejected */ +#define FC_EX_INV_LOGIN 6 /* Login not completed */ +#define FC_EX_SEQ_ERR 6 /* Exchange sequence error */ /** * enum fc_lport_state - Local port states @@ -350,7 +355,8 @@ struct fc_fcp_pkt { /* Timeout/error related information */ struct timer_list timer; - int wait_for_comp; + int wait_for_comp; + int timer_delay; u32 recov_retry; struct fc_seq *recov_seq; struct completion tm_done; @@ -385,6 +391,7 @@ struct fc_seq { #define FC_EX_DONE (1 << 0) /* ep is completed */ #define FC_EX_RST_CLEANUP (1 << 1) /* reset is forcing completion */ +#define FC_EX_QUARANTINE (1 << 2) /* exch is quarantined */ /** * struct fc_exch - Fibre Channel Exchange @@ -478,37 +485,6 @@ struct libfc_function_template { void *arg, u32 timer_msec); /* - * Send the FC frame payload using a new exchange and sequence. - * - * 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 *, struct fc_frame *, - void (*resp)(struct fc_seq *, - struct fc_frame *, - void *), - void (*destructor)(struct fc_seq *, - void *), - void *, unsigned int timer_msec); - - /* * Sets up the DDP context for a given exchange id on the given * scatterlist if LLD supports DDP for large receive. * @@ -537,73 +513,6 @@ struct libfc_function_template { * STATUS: OPTIONAL */ void (*get_lesb)(struct fc_lport *, struct fc_els_lesb *lesb); - /* - * Send a frame using an existing sequence and exchange. - * - * STATUS: OPTIONAL - */ - int (*seq_send)(struct fc_lport *, struct fc_seq *, - struct fc_frame *); - - /* - * Send an ELS response using information from the received frame. - * - * STATUS: OPTIONAL - */ - void (*seq_els_rsp_send)(struct fc_frame *, enum fc_els_cmd, - struct fc_seq_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 *, - 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 *); - - /* - * Start a new sequence on the same exchange/sequence tuple. - * - * STATUS: OPTIONAL - */ - 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. - * - * STATUS: OPTIONAL - */ - 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. @@ -615,27 +524,6 @@ struct libfc_function_template { 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 *, struct fc_frame *); - - /* - * Reset the local port. - * - * STATUS: OPTIONAL - */ - int (*lport_reset)(struct fc_lport *); - - /* * Set the local port FC_ID. * * This may be provided by the LLD to allow it to be @@ -656,54 +544,6 @@ struct libfc_function_template { struct fc_frame *); /* - * Create a remote port with a given port ID - * - * STATUS: OPTIONAL - */ - struct fc_rport_priv *(*rport_create)(struct fc_lport *, u32); - - /* - * 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_priv *); - - /* - * 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_priv *); - - /* - * Receive a request from a remote port. - * - * STATUS: OPTIONAL - */ - void (*rport_recv_req)(struct fc_lport *, struct fc_frame *); - - /* - * lookup an rport by it's port ID. - * - * STATUS: OPTIONAL - */ - struct fc_rport_priv *(*rport_lookup)(const struct fc_lport *, u32); - - /* - * Destroy an rport after final kref_put(). - * The argument is a pointer to the kref inside the fc_rport_priv. - */ - void (*rport_destroy)(struct kref *); - - /* * Callback routine after the remote port is logged in * * STATUS: OPTIONAL @@ -1068,18 +908,26 @@ void fc_vport_setlink(struct fc_lport *); void fc_vports_linkchange(struct fc_lport *); int fc_lport_config(struct fc_lport *); int fc_lport_reset(struct fc_lport *); +void fc_lport_recv(struct fc_lport *lport, struct fc_frame *fp); int fc_set_mfs(struct fc_lport *, u32 mfs); 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 *); +int fc_lport_bsg_request(struct 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 *****************************/ -int fc_rport_init(struct fc_lport *); void fc_rport_terminate_io(struct fc_rport *); +struct fc_rport_priv *fc_rport_lookup(const struct fc_lport *lport, + u32 port_id); +struct fc_rport_priv *fc_rport_create(struct fc_lport *, u32); +void fc_rport_destroy(struct kref *kref); +int fc_rport_login(struct fc_rport_priv *rdata); +int fc_rport_logoff(struct fc_rport_priv *rdata); +void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp); +void fc_rport_flush_queue(void); /* * DISCOVERY LAYER @@ -1131,6 +979,21 @@ void fc_fill_hdr(struct fc_frame *, const struct fc_frame *, *****************************/ int fc_exch_init(struct fc_lport *); void fc_exch_update_stats(struct fc_lport *lport); +struct fc_seq *fc_exch_seq_send(struct fc_lport *lport, + struct fc_frame *fp, + void (*resp)(struct fc_seq *, + struct fc_frame *fp, + void *arg), + void (*destructor)(struct fc_seq *, void *), + void *arg, u32 timer_msec); +void fc_seq_els_rsp_send(struct fc_frame *, enum fc_els_cmd, + struct fc_seq_els_data *); +struct fc_seq *fc_seq_start_next(struct fc_seq *sp); +void fc_seq_set_resp(struct fc_seq *sp, + void (*resp)(struct fc_seq *, struct fc_frame *, void *), + void *arg); +struct fc_seq *fc_seq_assign(struct fc_lport *lport, struct fc_frame *fp); +void fc_seq_release(struct fc_seq *sp); struct fc_exch_mgr_anchor *fc_exch_mgr_add(struct fc_lport *, struct fc_exch_mgr *, bool (*match)(struct fc_frame *)); @@ -1142,6 +1005,9 @@ struct fc_exch_mgr *fc_exch_mgr_alloc(struct fc_lport *, enum fc_class class, void fc_exch_mgr_free(struct fc_lport *); void fc_exch_recv(struct fc_lport *, struct fc_frame *); void fc_exch_mgr_reset(struct fc_lport *, u32 s_id, u32 d_id); +int fc_seq_send(struct fc_lport *lport, struct fc_seq *sp, struct fc_frame *fp); +int fc_seq_exch_abort(const struct fc_seq *, unsigned int timer_msec); +void fc_exch_done(struct fc_seq *sp); /* * Functions for fc_functions_template |