934aeb587b
For ports, zfcp gets the DID from the FC nameserver and tries to open the port. If the open succeeds, zfcp compares the WWPN from the nameserver with the WWPN in the PLOGI payload. In case of a mismatch, zfcp assumes that the DID of the port just changed and we opened the wrong port. This means that zfcp has to forget the DID, lookup the DID again and retry. This error case had a problem that zfcp forgets the DID, but never looks up a new one, stalling the ERP in this case. Fix this by triggering the DID lookup and properly exit from the ERP. The DID lookup will trigger a new ERP action. Also ensure when trying to open the port again with the new DID, first close the open port, even in the NOESC case. Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@suse.de>
172 lines
8.1 KiB
C
172 lines
8.1 KiB
C
/*
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* zfcp device driver
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*
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* External function declarations.
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*
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* Copyright IBM Corporation 2002, 2009
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*/
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#ifndef ZFCP_EXT_H
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#define ZFCP_EXT_H
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#include "zfcp_def.h"
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/* zfcp_aux.c */
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extern struct zfcp_unit *zfcp_get_unit_by_lun(struct zfcp_port *, u64);
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extern struct zfcp_port *zfcp_get_port_by_wwpn(struct zfcp_adapter *, u64);
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extern int zfcp_adapter_enqueue(struct ccw_device *);
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extern void zfcp_adapter_dequeue(struct zfcp_adapter *);
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extern struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *, u64, u32,
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u32);
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extern void zfcp_port_dequeue(struct zfcp_port *);
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extern struct zfcp_unit *zfcp_unit_enqueue(struct zfcp_port *, u64);
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extern void zfcp_unit_dequeue(struct zfcp_unit *);
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extern int zfcp_reqlist_isempty(struct zfcp_adapter *);
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extern void zfcp_sg_free_table(struct scatterlist *, int);
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extern int zfcp_sg_setup_table(struct scatterlist *, int);
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/* zfcp_ccw.c */
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extern int zfcp_ccw_register(void);
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extern int zfcp_ccw_priv_sch(struct zfcp_adapter *);
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extern struct ccw_driver zfcp_ccw_driver;
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/* zfcp_cfdc.c */
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extern struct miscdevice zfcp_cfdc_misc;
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/* zfcp_dbf.c */
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extern int zfcp_dbf_adapter_register(struct zfcp_adapter *);
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extern void zfcp_dbf_adapter_unregister(struct zfcp_dbf *);
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extern void zfcp_dbf_rec_thread(char *, struct zfcp_dbf *);
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extern void zfcp_dbf_rec_thread_lock(char *, struct zfcp_dbf *);
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extern void zfcp_dbf_rec_adapter(char *, void *, struct zfcp_dbf *);
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extern void zfcp_dbf_rec_port(char *, void *, struct zfcp_port *);
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extern void zfcp_dbf_rec_unit(char *, void *, struct zfcp_unit *);
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extern void zfcp_dbf_rec_trigger(char *, void *, u8, u8, void *,
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struct zfcp_adapter *, struct zfcp_port *,
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struct zfcp_unit *);
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extern void zfcp_dbf_rec_action(char *, struct zfcp_erp_action *);
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extern void _zfcp_dbf_hba_fsf_response(const char *, int, struct zfcp_fsf_req *,
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struct zfcp_dbf *);
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extern void _zfcp_dbf_hba_fsf_unsol(const char *, int level, struct zfcp_dbf *,
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struct fsf_status_read_buffer *);
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extern void zfcp_dbf_hba_qdio(struct zfcp_dbf *, unsigned int, int, int);
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extern void zfcp_dbf_hba_berr(struct zfcp_dbf *, struct zfcp_fsf_req *);
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extern void zfcp_dbf_san_ct_request(struct zfcp_fsf_req *);
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extern void zfcp_dbf_san_ct_response(struct zfcp_fsf_req *);
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extern void zfcp_dbf_san_els_request(struct zfcp_fsf_req *);
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extern void zfcp_dbf_san_els_response(struct zfcp_fsf_req *);
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extern void zfcp_dbf_san_incoming_els(struct zfcp_fsf_req *);
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extern void _zfcp_dbf_scsi(const char *, const char *, int, struct zfcp_dbf *,
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struct scsi_cmnd *, struct zfcp_fsf_req *,
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unsigned long);
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/* zfcp_erp.c */
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extern void zfcp_erp_modify_adapter_status(struct zfcp_adapter *, char *,
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void *, u32, int);
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extern void zfcp_erp_adapter_reopen(struct zfcp_adapter *, int, char *, void *);
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extern void zfcp_erp_adapter_shutdown(struct zfcp_adapter *, int, char *,
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void *);
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extern void zfcp_erp_adapter_failed(struct zfcp_adapter *, char *, void *);
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extern void zfcp_erp_modify_port_status(struct zfcp_port *, char *, void *, u32,
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int);
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extern int zfcp_erp_port_reopen(struct zfcp_port *, int, char *, void *);
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extern void zfcp_erp_port_shutdown(struct zfcp_port *, int, char *, void *);
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extern void zfcp_erp_port_forced_reopen(struct zfcp_port *, int, char *,
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void *);
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extern void zfcp_erp_port_failed(struct zfcp_port *, char *, void *);
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extern void zfcp_erp_modify_unit_status(struct zfcp_unit *, char *, void *, u32,
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int);
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extern void zfcp_erp_unit_reopen(struct zfcp_unit *, int, char *, void *);
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extern void zfcp_erp_unit_shutdown(struct zfcp_unit *, int, char *, void *);
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extern void zfcp_erp_unit_failed(struct zfcp_unit *, char *, void *);
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extern int zfcp_erp_thread_setup(struct zfcp_adapter *);
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extern void zfcp_erp_thread_kill(struct zfcp_adapter *);
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extern void zfcp_erp_wait(struct zfcp_adapter *);
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extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
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extern void zfcp_erp_port_boxed(struct zfcp_port *, char *, void *);
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extern void zfcp_erp_unit_boxed(struct zfcp_unit *, char *, void *);
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extern void zfcp_erp_port_access_denied(struct zfcp_port *, char *, void *);
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extern void zfcp_erp_unit_access_denied(struct zfcp_unit *, char *, void *);
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extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, char *,
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void *);
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extern void zfcp_erp_timeout_handler(unsigned long);
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/* zfcp_fc.c */
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extern int zfcp_fc_scan_ports(struct zfcp_adapter *);
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extern void _zfcp_fc_scan_ports_later(struct work_struct *);
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extern void zfcp_fc_incoming_els(struct zfcp_fsf_req *);
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extern void zfcp_fc_port_did_lookup(struct work_struct *);
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extern void zfcp_fc_trigger_did_lookup(struct zfcp_port *);
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extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
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extern void zfcp_fc_test_link(struct zfcp_port *);
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extern void zfcp_fc_link_test_work(struct work_struct *);
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extern void zfcp_fc_wka_ports_force_offline(struct zfcp_wka_ports *);
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extern int zfcp_fc_gs_setup(struct zfcp_adapter *);
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extern void zfcp_fc_gs_destroy(struct zfcp_adapter *);
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extern int zfcp_fc_execute_els_fc_job(struct fc_bsg_job *);
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extern int zfcp_fc_execute_ct_fc_job(struct fc_bsg_job *);
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/* zfcp_fsf.c */
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extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
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extern int zfcp_fsf_open_wka_port(struct zfcp_wka_port *);
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extern int zfcp_fsf_close_wka_port(struct zfcp_wka_port *);
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extern int zfcp_fsf_close_port(struct zfcp_erp_action *);
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extern int zfcp_fsf_close_physical_port(struct zfcp_erp_action *);
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extern int zfcp_fsf_open_unit(struct zfcp_erp_action *);
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extern int zfcp_fsf_close_unit(struct zfcp_erp_action *);
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extern int zfcp_fsf_exchange_config_data(struct zfcp_erp_action *);
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extern int zfcp_fsf_exchange_config_data_sync(struct zfcp_qdio *,
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struct fsf_qtcb_bottom_config *);
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extern int zfcp_fsf_exchange_port_data(struct zfcp_erp_action *);
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extern int zfcp_fsf_exchange_port_data_sync(struct zfcp_qdio *,
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struct fsf_qtcb_bottom_port *);
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extern struct zfcp_fsf_req *zfcp_fsf_control_file(struct zfcp_adapter *,
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struct zfcp_fsf_cfdc *);
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extern void zfcp_fsf_req_dismiss_all(struct zfcp_adapter *);
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extern int zfcp_fsf_status_read(struct zfcp_qdio *);
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extern int zfcp_status_read_refill(struct zfcp_adapter *adapter);
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extern int zfcp_fsf_send_ct(struct zfcp_send_ct *, mempool_t *);
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extern int zfcp_fsf_send_els(struct zfcp_send_els *);
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extern int zfcp_fsf_send_fcp_command_task(struct zfcp_unit *,
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struct scsi_cmnd *);
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extern void zfcp_fsf_req_free(struct zfcp_fsf_req *);
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extern struct zfcp_fsf_req *zfcp_fsf_send_fcp_ctm(struct zfcp_unit *, u8);
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extern struct zfcp_fsf_req *zfcp_fsf_abort_fcp_command(unsigned long,
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struct zfcp_unit *);
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extern void zfcp_fsf_reqid_check(struct zfcp_qdio *, int);
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/* zfcp_qdio.c */
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extern int zfcp_qdio_setup(struct zfcp_adapter *);
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extern void zfcp_qdio_destroy(struct zfcp_qdio *);
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extern int zfcp_qdio_send(struct zfcp_qdio *, struct zfcp_queue_req *);
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extern struct qdio_buffer_element
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*zfcp_qdio_sbale_req(struct zfcp_qdio *, struct zfcp_queue_req *);
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extern struct qdio_buffer_element
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*zfcp_qdio_sbale_curr(struct zfcp_qdio *, struct zfcp_queue_req *);
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extern int zfcp_qdio_sbals_from_sg(struct zfcp_qdio *,
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struct zfcp_queue_req *, unsigned long,
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struct scatterlist *, int);
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extern int zfcp_qdio_open(struct zfcp_qdio *);
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extern void zfcp_qdio_close(struct zfcp_qdio *);
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/* zfcp_scsi.c */
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extern struct zfcp_data zfcp_data;
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extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
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extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
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extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
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extern struct fc_function_template zfcp_transport_functions;
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extern void zfcp_scsi_rport_work(struct work_struct *);
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extern void zfcp_scsi_schedule_rport_register(struct zfcp_port *);
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extern void zfcp_scsi_schedule_rport_block(struct zfcp_port *);
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extern void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *);
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extern void zfcp_scsi_scan(struct work_struct *);
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/* zfcp_sysfs.c */
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extern struct attribute_group zfcp_sysfs_unit_attrs;
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extern struct attribute_group zfcp_sysfs_adapter_attrs;
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extern struct attribute_group zfcp_sysfs_port_attrs;
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extern struct device_attribute *zfcp_sysfs_sdev_attrs[];
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extern struct device_attribute *zfcp_sysfs_shost_attrs[];
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#endif /* ZFCP_EXT_H */
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