3d28934aaa
This patch adds initial support for TMR_ABORT_TASK ops for se_cmd descriptors using se_sess->sess_cmd_list and se_cmd->cmd_kref counting. It will perform an explict abort for all outstanding se_cmd ops based upon tmr->ref_task_tag that have not been set CMD_T_COMPLETE. It will cancel se_cmd->work and wait for backing I/O to complete before attempting to send SAM_STAT_TASK_ABORTED and perform target_put_sess_cmd() to release the referenced descriptor. It also adds a CMD_T_ABORTED check into transport_complete_task() to catch the completion from backend I/O that has been aborted, and updates transport_wait_for_tasks() to allow CMD_T_ABORTED usage with core_tmr_abort_task() context. Reported-by: Roland Dreier <roland@purestorage.com> Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
126 lines
5.8 KiB
C
126 lines
5.8 KiB
C
#ifndef TARGET_CORE_INTERNAL_H
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#define TARGET_CORE_INTERNAL_H
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/* target_core_alua.c */
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extern struct t10_alua_lu_gp *default_lu_gp;
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/* target_core_cdb.c */
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int target_emulate_inquiry(struct se_task *task);
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int target_emulate_readcapacity(struct se_task *task);
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int target_emulate_readcapacity_16(struct se_task *task);
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int target_emulate_modesense(struct se_task *task);
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int target_emulate_request_sense(struct se_task *task);
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int target_emulate_unmap(struct se_task *task);
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int target_emulate_write_same(struct se_task *task);
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int target_emulate_synchronize_cache(struct se_task *task);
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int target_emulate_noop(struct se_task *task);
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/* target_core_device.c */
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struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16);
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int core_free_device_list_for_node(struct se_node_acl *,
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struct se_portal_group *);
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void core_dec_lacl_count(struct se_node_acl *, struct se_cmd *);
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void core_update_device_list_access(u32, u32, struct se_node_acl *);
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int core_update_device_list_for_node(struct se_lun *, struct se_lun_acl *,
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u32, u32, struct se_node_acl *, struct se_portal_group *, int);
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void core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *);
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int core_dev_export(struct se_device *, struct se_portal_group *,
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struct se_lun *);
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void core_dev_unexport(struct se_device *, struct se_portal_group *,
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struct se_lun *);
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int target_report_luns(struct se_task *);
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void se_release_device_for_hba(struct se_device *);
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void se_release_vpd_for_dev(struct se_device *);
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int se_free_virtual_device(struct se_device *, struct se_hba *);
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int se_dev_check_online(struct se_device *);
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int se_dev_check_shutdown(struct se_device *);
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void se_dev_set_default_attribs(struct se_device *, struct se_dev_limits *);
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int se_dev_set_task_timeout(struct se_device *, u32);
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int se_dev_set_max_unmap_lba_count(struct se_device *, u32);
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int se_dev_set_max_unmap_block_desc_count(struct se_device *, u32);
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int se_dev_set_unmap_granularity(struct se_device *, u32);
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int se_dev_set_unmap_granularity_alignment(struct se_device *, u32);
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int se_dev_set_emulate_dpo(struct se_device *, int);
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int se_dev_set_emulate_fua_write(struct se_device *, int);
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int se_dev_set_emulate_fua_read(struct se_device *, int);
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int se_dev_set_emulate_write_cache(struct se_device *, int);
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int se_dev_set_emulate_ua_intlck_ctrl(struct se_device *, int);
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int se_dev_set_emulate_tas(struct se_device *, int);
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int se_dev_set_emulate_tpu(struct se_device *, int);
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int se_dev_set_emulate_tpws(struct se_device *, int);
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int se_dev_set_enforce_pr_isids(struct se_device *, int);
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int se_dev_set_is_nonrot(struct se_device *, int);
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int se_dev_set_emulate_rest_reord(struct se_device *dev, int);
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int se_dev_set_queue_depth(struct se_device *, u32);
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int se_dev_set_max_sectors(struct se_device *, u32);
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int se_dev_set_optimal_sectors(struct se_device *, u32);
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int se_dev_set_block_size(struct se_device *, u32);
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struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_hba *,
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struct se_device *, u32);
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int core_dev_del_lun(struct se_portal_group *, u32);
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struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32);
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struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *,
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u32, char *, int *);
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int core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
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struct se_lun_acl *, u32, u32);
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int core_dev_del_initiator_node_lun_acl(struct se_portal_group *,
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struct se_lun *, struct se_lun_acl *);
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void core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
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struct se_lun_acl *lacl);
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int core_dev_setup_virtual_lun0(void);
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void core_dev_release_virtual_lun0(void);
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/* target_core_hba.c */
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struct se_hba *core_alloc_hba(const char *, u32, u32);
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int core_delete_hba(struct se_hba *);
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/* target_core_tmr.c */
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void core_tmr_abort_task(struct se_device *, struct se_tmr_req *,
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struct se_session *);
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int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
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struct list_head *, struct se_cmd *);
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/* target_core_tpg.c */
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extern struct se_device *g_lun0_dev;
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struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
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const char *);
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struct se_node_acl *core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
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unsigned char *);
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void core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *);
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void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
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struct se_lun *core_tpg_pre_addlun(struct se_portal_group *, u32);
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int core_tpg_post_addlun(struct se_portal_group *, struct se_lun *,
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u32, void *);
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struct se_lun *core_tpg_pre_dellun(struct se_portal_group *, u32 unpacked_lun);
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int core_tpg_post_dellun(struct se_portal_group *, struct se_lun *);
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/* target_core_transport.c */
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extern struct kmem_cache *se_tmr_req_cache;
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int init_se_kmem_caches(void);
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void release_se_kmem_caches(void);
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u32 scsi_get_new_index(scsi_index_t);
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void transport_subsystem_check_init(void);
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void transport_cmd_finish_abort(struct se_cmd *, int);
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void __transport_remove_task_from_execute_queue(struct se_task *,
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struct se_device *);
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unsigned char *transport_dump_cmd_direction(struct se_cmd *);
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void transport_dump_dev_state(struct se_device *, char *, int *);
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void transport_dump_dev_info(struct se_device *, struct se_lun *,
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unsigned long long, char *, int *);
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void transport_dump_vpd_proto_id(struct t10_vpd *, unsigned char *, int);
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int transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int);
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int transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int);
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int transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int);
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bool target_stop_task(struct se_task *task, unsigned long *flags);
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int transport_clear_lun_from_sessions(struct se_lun *);
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void transport_send_task_abort(struct se_cmd *);
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/* target_core_stat.c */
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void target_stat_setup_dev_default_groups(struct se_subsystem_dev *);
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void target_stat_setup_port_default_groups(struct se_lun *);
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void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *);
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#endif /* TARGET_CORE_INTERNAL_H */
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