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Merge branch 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending

Browse Source 
Pull SCSI target updates from Nicholas Bellinger:
 "Lots of activity in target land the last months.

  The highlights include:

   - Convert fabric drivers tree-wide to target_register_template() (hch
     + bart)

   - iser-target hardening fixes + v1.0 improvements (sagi)

   - Convert iscsi_thread_set usage to kthread.h + kill
     iscsi_target_tq.c (sagi + nab)

   - Add support for T10-PI WRITE_STRIP + READ_INSERT operation (mkp +
     sagi + nab)

   - DIF fixes for CONFIG_DEBUG_SG=y + UNMAP file emulation (akinobu +
     sagi + mkp)

   - Extended TCMU ABI v2 for future BIDI + DIF support (andy + ilias)

   - Fix COMPARE_AND_WRITE handling for NO_ALLLOC drivers (hch + nab)

  Thanks to everyone who contributed this round with new features,
  bug-reports, fixes, cleanups and improvements.

  Looking forward, it's currently shaping up to be a busy v4.2 as well"

* 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (69 commits)
  target: Put TCMU under a new config option
  target: Version 2 of TCMU ABI
  target: fix tcm_mod_builder.py
  target/file: Fix UNMAP with DIF protection support
  target/file: Fix SG table for prot_buf initialization
  target/file: Fix BUG() when CONFIG_DEBUG_SG=y and DIF protection enabled
  target: Make core_tmr_abort_task() skip TMFs
  target/sbc: Update sbc_dif_generate pr_debug output
  target/sbc: Make internal DIF emulation honor ->prot_checks
  target/sbc: Return INVALID_CDB_FIELD if DIF + sess_prot_type disabled
  target: Ensure sess_prot_type is saved across session restart
  target/rd: Don't pass incomplete scatterlist entries to sbc_dif_verify_*
  target: Remove the unused flag SCF_ACK_KREF
  target: Fix two sparse warnings
  target: Fix COMPARE_AND_WRITE with SG_TO_MEM_NOALLOC handling
  target: simplify the target template registration API
  target: simplify target_xcopy_init_pt_lun
  target: remove the unused SCF_CMD_XCOPY_PASSTHROUGH flag
  target/rd: reduce code duplication in rd_execute_rw()
  tcm_loop: fixup tpgt string to integer conversion
  ...
This commit is contained in:
Linus Torvalds
2015-04-24 10:22:09 -07:00
parent 06b45f2aa7 68d4cef3ba
commit c6668726d2
50 changed files with 1703 additions and 2289 deletions
Download Patch File Download Diff File Expand all files Collapse all files

15
include/target/iscsi/iscsi_target_core.h
View File

@@ -20,6 +20,8 @@
#define ISCSIT_MIN_TAGS 16
#define ISCSIT_EXTRA_TAGS 8
#define ISCSIT_TCP_BACKLOG 256
#define ISCSI_RX_THREAD_NAME "iscsi_trx"
#define ISCSI_TX_THREAD_NAME "iscsi_ttx"
/* struct iscsi_node_attrib sanity values */
#define NA_DATAOUT_TIMEOUT 3
@@ -60,6 +62,7 @@
#define TA_CACHE_CORE_NPS 0
/* T10 protection information disabled by default */
#define TA_DEFAULT_T10_PI 0
#define TA_DEFAULT_FABRIC_PROT_TYPE 0
#define ISCSI_IOV_DATA_BUFFER 5
@@ -600,8 +603,11 @@ struct iscsi_conn {
struct iscsi_tpg_np *tpg_np;
/* Pointer to parent session */
struct iscsi_session *sess;
/* Pointer to thread_set in use for this conn's threads */
struct iscsi_thread_set *thread_set;
int bitmap_id;
int rx_thread_active;
struct task_struct *rx_thread;
int tx_thread_active;
struct task_struct *tx_thread;
/* list_head for session connection list */
struct list_head conn_list;
} ____cacheline_aligned;
@@ -767,6 +773,7 @@ struct iscsi_tpg_attrib {
u32 demo_mode_discovery;
u32 default_erl;
u8 t10_pi;
u32 fabric_prot_type;
struct iscsi_portal_group *tpg;
};
@@ -871,10 +878,10 @@ struct iscsit_global {
/* Unique identifier used for the authentication daemon */
u32 auth_id;
u32 inactive_ts;
/* Thread Set bitmap count */
int ts_bitmap_count;
#define ISCSIT_BITMAP_BITS 262144
/* Thread Set bitmap pointer */
unsigned long *ts_bitmap;
spinlock_t ts_bitmap_lock;
/* Used for iSCSI discovery session authentication */
struct iscsi_node_acl discovery_acl;
struct iscsi_portal_group *discovery_tpg;

10
include/target/target_core_base.h
View File

@@ -165,10 +165,8 @@ enum se_cmd_flags_table {
SCF_SEND_DELAYED_TAS = 0x00004000,
SCF_ALUA_NON_OPTIMIZED = 0x00008000,
SCF_PASSTHROUGH_SG_TO_MEM_NOALLOC = 0x00020000,
SCF_ACK_KREF = 0x00040000,
SCF_COMPARE_AND_WRITE = 0x00080000,
SCF_COMPARE_AND_WRITE_POST = 0x00100000,
SCF_CMD_XCOPY_PASSTHROUGH = 0x00200000,
};
/* struct se_dev_entry->lun_flags and struct se_lun->lun_access */
@@ -520,11 +518,11 @@ struct se_cmd {
struct list_head se_cmd_list;
struct completion cmd_wait_comp;
struct kref cmd_kref;
struct target_core_fabric_ops *se_tfo;
const struct target_core_fabric_ops *se_tfo;
sense_reason_t (*execute_cmd)(struct se_cmd *);
sense_reason_t (*execute_rw)(struct se_cmd *, struct scatterlist *,
u32, enum dma_data_direction);
sense_reason_t (*transport_complete_callback)(struct se_cmd *);
sense_reason_t (*transport_complete_callback)(struct se_cmd *, bool);
unsigned char *t_task_cdb;
unsigned char __t_task_cdb[TCM_MAX_COMMAND_SIZE];
@@ -591,6 +589,7 @@ struct se_node_acl {
bool acl_stop:1;
u32 queue_depth;
u32 acl_index;
enum target_prot_type saved_prot_type;
#define MAX_ACL_TAG_SIZE 64
char acl_tag[MAX_ACL_TAG_SIZE];
/* Used for PR SPEC_I_PT=1 and REGISTER_AND_MOVE */
@@ -616,6 +615,7 @@ struct se_session {
unsigned sess_tearing_down:1;
u64 sess_bin_isid;
enum target_prot_op sup_prot_ops;
enum target_prot_type sess_prot_type;
struct se_node_acl *se_node_acl;
struct se_portal_group *se_tpg;
void *fabric_sess_ptr;
@@ -890,7 +890,7 @@ struct se_portal_group {
/* List of TCM sessions associated wth this TPG */
struct list_head tpg_sess_list;
/* Pointer to $FABRIC_MOD dependent code */
struct target_core_fabric_ops *se_tpg_tfo;
const struct target_core_fabric_ops *se_tpg_tfo;
struct se_wwn *se_tpg_wwn;
struct config_group tpg_group;
struct config_group *tpg_default_groups[7];

6
include/target/target_core_configfs.h
View File

@@ -5,12 +5,6 @@
#define TARGET_CORE_NAME_MAX_LEN 64
#define TARGET_FABRIC_NAME_SIZE 32
extern struct target_fabric_configfs *target_fabric_configfs_init(
struct module *, const char *);
extern void target_fabric_configfs_free(struct target_fabric_configfs *);
extern int target_fabric_configfs_register(struct target_fabric_configfs *);
extern void target_fabric_configfs_deregister(struct target_fabric_configfs *);
struct target_fabric_configfs_template {
struct config_item_type tfc_discovery_cit;
struct config_item_type tfc_wwn_cit;

33
include/target/target_core_fabric.h
View File

@@ -2,6 +2,8 @@
#define TARGET_CORE_FABRIC_H
struct target_core_fabric_ops {
struct module *module;
const char *name;
struct configfs_subsystem *tf_subsys;
char *(*get_fabric_name)(void);
u8 (*get_fabric_proto_ident)(struct se_portal_group *);
@@ -27,6 +29,14 @@ struct target_core_fabric_ops {
* inquiry response
*/
int (*tpg_check_demo_mode_login_only)(struct se_portal_group *);
/*
* Optionally used as a configfs tunable to determine when
* target-core should signal the PROTECT=1 feature bit for
* backends that don't support T10-PI, so that either fabric
* HW offload or target-core emulation performs the associated
* WRITE_STRIP and READ_INSERT operations.
*/
int (*tpg_check_prot_fabric_only)(struct se_portal_group *);
struct se_node_acl *(*tpg_alloc_fabric_acl)(
struct se_portal_group *);
void (*tpg_release_fabric_acl)(struct se_portal_group *,
@@ -82,8 +92,23 @@ struct target_core_fabric_ops {
struct se_node_acl *(*fabric_make_nodeacl)(struct se_portal_group *,
struct config_group *, const char *);
void (*fabric_drop_nodeacl)(struct se_node_acl *);
struct configfs_attribute **tfc_discovery_attrs;
struct configfs_attribute **tfc_wwn_attrs;
struct configfs_attribute **tfc_tpg_base_attrs;
struct configfs_attribute **tfc_tpg_np_base_attrs;
struct configfs_attribute **tfc_tpg_attrib_attrs;
struct configfs_attribute **tfc_tpg_auth_attrs;
struct configfs_attribute **tfc_tpg_param_attrs;
struct configfs_attribute **tfc_tpg_nacl_base_attrs;
struct configfs_attribute **tfc_tpg_nacl_attrib_attrs;
struct configfs_attribute **tfc_tpg_nacl_auth_attrs;
struct configfs_attribute **tfc_tpg_nacl_param_attrs;
};
int target_register_template(const struct target_core_fabric_ops *fo);
void target_unregister_template(const struct target_core_fabric_ops *fo);
struct se_session *transport_init_session(enum target_prot_op);
int transport_alloc_session_tags(struct se_session *, unsigned int,
unsigned int);
@@ -95,13 +120,15 @@ void transport_register_session(struct se_portal_group *,
struct se_node_acl *, struct se_session *, void *);
void target_get_session(struct se_session *);
void target_put_session(struct se_session *);
ssize_t target_show_dynamic_sessions(struct se_portal_group *, char *);
void transport_free_session(struct se_session *);
void target_put_nacl(struct se_node_acl *);
void transport_deregister_session_configfs(struct se_session *);
void transport_deregister_session(struct se_session *);
void transport_init_se_cmd(struct se_cmd *, struct target_core_fabric_ops *,
void transport_init_se_cmd(struct se_cmd *,
const struct target_core_fabric_ops *,
struct se_session *, u32, int, int, unsigned char *);
sense_reason_t transport_lookup_cmd_lun(struct se_cmd *, u32);
sense_reason_t target_setup_cmd_from_cdb(struct se_cmd *, unsigned char *);
@@ -153,8 +180,8 @@ int core_tpg_set_initiator_node_queue_depth(struct se_portal_group *,
unsigned char *, u32, int);
int core_tpg_set_initiator_node_tag(struct se_portal_group *,
struct se_node_acl *, const char *);
int core_tpg_register(struct target_core_fabric_ops *, struct se_wwn *,
struct se_portal_group *, void *, int);
int core_tpg_register(const struct target_core_fabric_ops *,
struct se_wwn *, struct se_portal_group *, void *, int);
int core_tpg_deregister(struct se_portal_group *);
/* SAS helpers */

5
include/target/target_core_fabric_configfs.h
View File

@@ -90,6 +90,11 @@ static struct target_fabric_tpg_attribute _fabric##_tpg_##_name = \
_fabric##_tpg_store_##_name);
#define TF_TPG_BASE_ATTR_RO(_fabric, _name) \
static struct target_fabric_tpg_attribute _fabric##_tpg_##_name = \
__CONFIGFS_EATTR_RO(_name, \
_fabric##_tpg_show_##_name);
CONFIGFS_EATTR_STRUCT(target_fabric_wwn, target_fabric_configfs);
#define TF_WWN_ATTR(_fabric, _name, _mode) \
static struct target_fabric_wwn_attribute _fabric##_wwn_##_name = \