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linux/drivers/target/target_core_internal.h
Linus Torvalds eda5d47134 Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending 
Pull SCSI target updates from Nicholas Bellinger:

 "This series is predominantly bug-fixes, with a few small improvements
  that have been outstanding over the last release cycle.

  As usual, the associated bug-fixes have CC' tags for stable.

  Also, things have been particularly quiet wrt new developments the
  last months, with most folks continuing to focus on stability atop 4.x
  stable kernels for their respective production configurations.

  Also at this point, the stable trees have been synced up with
  mainline. This will continue to be a priority, as production users
  tend to run exclusively atop stable kernels, a few releases behind
  mainline.

  The highlights include:

   - Fix PR PREEMPT_AND_ABORT null pointer dereference regression in
     v4.11+ (tangwenji)

   - Fix OOPs during removing TCMU device (Xiubo Li + Zhang Zhuoyu)

   - Add netlink command reply supported option for each device (Kenjiro
     Nakayama)

   - cxgbit: Abort the TCP connection in case of data out timeout (Varun
     Prakash)

   - Fix PR/ALUA file path truncation (David Disseldorp)

   - Fix double se_cmd completion during ->cmd_time_out (Mike Christie)

   - Fix QUEUE_FULL + SCSI task attribute handling in 4.1+ (Bryant Ly +
     nab)

   - Fix quiese during transport_write_pending_qf endless loop (nab)

   - Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK in 3.14+
     (Don White + nab)"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (35 commits)
  tcmu: Add a missing unlock on an error path
  tcmu: Fix some memory corruption
  iscsi-target: Fix non-immediate TMR reference leak
  iscsi-target: Make TASK_REASSIGN use proper se_cmd->cmd_kref
  target: Avoid early CMD_T_PRE_EXECUTE failures during ABORT_TASK
  target: Fix quiese during transport_write_pending_qf endless loop
  target: Fix caw_sem leak in transport_generic_request_failure
  target: Fix QUEUE_FULL + SCSI task attribute handling
  iSCSI-target: Use common error handling code in iscsi_decode_text_input()
  target/iscsi: Detect conn_cmd_list corruption early
  target/iscsi: Fix a race condition in iscsit_add_reject_from_cmd()
  target/iscsi: Modify iscsit_do_crypto_hash_buf() prototype
  target/iscsi: Fix endianness in an error message
  target/iscsi: Use min() in iscsit_dump_data_payload() instead of open-coding it
  target/iscsi: Define OFFLOAD_BUF_SIZE once
  target: Inline transport_put_cmd()
  target: Suppress gcc 7 fallthrough warnings
  target: Move a declaration of a global variable into a header file
  tcmu: fix double se_cmd completion
  target: return SAM_STAT_TASK_SET_FULL for TCM_OUT_OF_RESOURCES
  ...
2017-11-24 19:19:20 -10:00

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef TARGET_CORE_INTERNAL_H
#define TARGET_CORE_INTERNAL_H
#include <linux/configfs.h>
#include <linux/list.h>
#include <linux/types.h>
#include <target/target_core_base.h>
#define TARGET_CORE_NAME_MAX_LEN 64
#define TARGET_FABRIC_NAME_SIZE 32
struct target_backend {
struct list_head list;
const struct target_backend_ops *ops;
struct config_item_type tb_dev_cit;
struct config_item_type tb_dev_attrib_cit;
struct config_item_type tb_dev_pr_cit;
struct config_item_type tb_dev_wwn_cit;
struct config_item_type tb_dev_alua_tg_pt_gps_cit;
struct config_item_type tb_dev_stat_cit;
};
struct target_fabric_configfs {
atomic_t tf_access_cnt;
struct list_head tf_list;
struct config_group tf_group;
struct config_group tf_disc_group;
const struct target_core_fabric_ops *tf_ops;
struct config_item_type tf_discovery_cit;
struct config_item_type tf_wwn_cit;
struct config_item_type tf_wwn_fabric_stats_cit;
struct config_item_type tf_tpg_cit;
struct config_item_type tf_tpg_base_cit;
struct config_item_type tf_tpg_lun_cit;
struct config_item_type tf_tpg_port_cit;
struct config_item_type tf_tpg_port_stat_cit;
struct config_item_type tf_tpg_np_cit;
struct config_item_type tf_tpg_np_base_cit;
struct config_item_type tf_tpg_attrib_cit;
struct config_item_type tf_tpg_auth_cit;
struct config_item_type tf_tpg_param_cit;
struct config_item_type tf_tpg_nacl_cit;
struct config_item_type tf_tpg_nacl_base_cit;
struct config_item_type tf_tpg_nacl_attrib_cit;
struct config_item_type tf_tpg_nacl_auth_cit;
struct config_item_type tf_tpg_nacl_param_cit;
struct config_item_type tf_tpg_nacl_stat_cit;
struct config_item_type tf_tpg_mappedlun_cit;
struct config_item_type tf_tpg_mappedlun_stat_cit;
};
/* target_core_alua.c */
extern struct t10_alua_lu_gp *default_lu_gp;
/* target_core_device.c */
int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev);
struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16);
void target_pr_kref_release(struct kref *);
void core_free_device_list_for_node(struct se_node_acl *,
struct se_portal_group *);
void core_update_device_list_access(u64, bool, struct se_node_acl *);
struct se_dev_entry *target_nacl_find_deve(struct se_node_acl *, u64);
int core_enable_device_list_for_node(struct se_lun *, struct se_lun_acl *,
u64, bool, struct se_node_acl *, struct se_portal_group *);
void core_disable_device_list_for_node(struct se_lun *, struct se_dev_entry *,
struct se_node_acl *, struct se_portal_group *);
void core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *);
int core_dev_add_lun(struct se_portal_group *, struct se_device *,
struct se_lun *lun);
void core_dev_del_lun(struct se_portal_group *, struct se_lun *);
struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group *,
struct se_node_acl *, u64, int *);
int core_dev_add_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun_acl *, struct se_lun *lun, bool);
int core_dev_del_initiator_node_lun_acl(struct se_lun *,
struct se_lun_acl *);
void core_dev_free_initiator_node_lun_acl(struct se_portal_group *,
struct se_lun_acl *lacl);
int core_dev_setup_virtual_lun0(void);
void core_dev_release_virtual_lun0(void);
struct se_device *target_alloc_device(struct se_hba *hba, const char *name);
int target_configure_device(struct se_device *dev);
void target_free_device(struct se_device *);
int target_for_each_device(int (*fn)(struct se_device *dev, void *data),
void *data);
/* target_core_configfs.c */
extern struct configfs_item_operations target_core_dev_item_ops;
void target_setup_backend_cits(struct target_backend *);
/* target_core_fabric_configfs.c */
int target_fabric_setup_cits(struct target_fabric_configfs *);
/* target_core_fabric_lib.c */
int target_get_pr_transport_id_len(struct se_node_acl *nacl,
struct t10_pr_registration *pr_reg, int *format_code);
int target_get_pr_transport_id(struct se_node_acl *nacl,
struct t10_pr_registration *pr_reg, int *format_code,
unsigned char *buf);
const char *target_parse_pr_out_transport_id(struct se_portal_group *tpg,
const char *buf, u32 *out_tid_len, char **port_nexus_ptr);
/* target_core_hba.c */
struct se_hba *core_alloc_hba(const char *, u32, u32);
int core_delete_hba(struct se_hba *);
/* target_core_tmr.c */
void core_tmr_abort_task(struct se_device *, struct se_tmr_req *,
struct se_session *);
int core_tmr_lun_reset(struct se_device *, struct se_tmr_req *,
struct list_head *, struct se_cmd *);
/* target_core_tpg.c */
extern struct se_device *g_lun0_dev;
struct se_node_acl *__core_tpg_get_initiator_node_acl(struct se_portal_group *tpg,
const char *);
void core_tpg_add_node_to_devs(struct se_node_acl *, struct se_portal_group *,
struct se_lun *);
void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *);
struct se_lun *core_tpg_alloc_lun(struct se_portal_group *, u64);
int core_tpg_add_lun(struct se_portal_group *, struct se_lun *,
bool, struct se_device *);
void core_tpg_remove_lun(struct se_portal_group *, struct se_lun *);
struct se_node_acl *core_tpg_add_initiator_node_acl(struct se_portal_group *tpg,
const char *initiatorname);
void core_tpg_del_initiator_node_acl(struct se_node_acl *acl);
/* target_core_transport.c */
extern struct kmem_cache *se_tmr_req_cache;
int init_se_kmem_caches(void);
void release_se_kmem_caches(void);
u32 scsi_get_new_index(scsi_index_t);
void transport_subsystem_check_init(void);
int transport_cmd_finish_abort(struct se_cmd *, int);
unsigned char *transport_dump_cmd_direction(struct se_cmd *);
void transport_dump_dev_state(struct se_device *, char *, int *);
void transport_dump_dev_info(struct se_device *, struct se_lun *,
unsigned long long, char *, int *);
void transport_dump_vpd_proto_id(struct t10_vpd *, unsigned char *, int);
int transport_dump_vpd_assoc(struct t10_vpd *, unsigned char *, int);
int transport_dump_vpd_ident_type(struct t10_vpd *, unsigned char *, int);
int transport_dump_vpd_ident(struct t10_vpd *, unsigned char *, int);
void transport_clear_lun_ref(struct se_lun *);
void transport_send_task_abort(struct se_cmd *);
sense_reason_t target_cmd_size_check(struct se_cmd *cmd, unsigned int size);
void target_qf_do_work(struct work_struct *work);
bool target_check_wce(struct se_device *dev);
bool target_check_fua(struct se_device *dev);
void __target_execute_cmd(struct se_cmd *, bool);
/* target_core_stat.c */
void target_stat_setup_dev_default_groups(struct se_device *);
void target_stat_setup_port_default_groups(struct se_lun *);
void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *);
/* target_core_xcopy.c */
extern struct se_portal_group xcopy_pt_tpg;
/* target_core_configfs.c */
#define DB_ROOT_LEN 4096
#define DB_ROOT_DEFAULT "/var/target"
extern char db_root[];
#endif /* TARGET_CORE_INTERNAL_H */
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