__CONFIGFS_EATTR_RO(_name, \
target_core_dev_pr_show_attr_##_name);
-/*
- * res_holder
- */
-static ssize_t target_core_dev_pr_show_spc3_res(
- struct se_device *dev,
- char *page,
- ssize_t *len)
+static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev,
+ char *page)
{
struct se_node_acl *se_nacl;
struct t10_pr_registration *pr_reg;
memset(i_buf, 0, PR_REG_ISID_ID_LEN);
- spin_lock(&dev->dev_reservation_lock);
pr_reg = dev->dev_pr_res_holder;
- if (!pr_reg) {
- *len += sprintf(page + *len, "No SPC-3 Reservation holder\n");
- spin_unlock(&dev->dev_reservation_lock);
- return *len;
- }
+ if (!pr_reg)
+ return sprintf(page, "No SPC-3 Reservation holder\n");
+
se_nacl = pr_reg->pr_reg_nacl;
prf_isid = core_pr_dump_initiator_port(pr_reg, &i_buf[0],
PR_REG_ISID_ID_LEN);
- *len += sprintf(page + *len, "SPC-3 Reservation: %s Initiator: %s%s\n",
+ return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n",
se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
se_nacl->initiatorname, (prf_isid) ? &i_buf[0] : "");
- spin_unlock(&dev->dev_reservation_lock);
-
- return *len;
}
-static ssize_t target_core_dev_pr_show_spc2_res(
- struct se_device *dev,
- char *page,
- ssize_t *len)
+static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev,
+ char *page)
{
struct se_node_acl *se_nacl;
+ ssize_t len;
- spin_lock(&dev->dev_reservation_lock);
se_nacl = dev->dev_reserved_node_acl;
- if (!se_nacl) {
- *len += sprintf(page + *len, "No SPC-2 Reservation holder\n");
- spin_unlock(&dev->dev_reservation_lock);
- return *len;
+ if (se_nacl) {
+ len = sprintf(page,
+ "SPC-2 Reservation: %s Initiator: %s\n",
+ se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
+ se_nacl->initiatorname);
+ } else {
+ len = sprintf(page, "No SPC-2 Reservation holder\n");
}
- *len += sprintf(page + *len, "SPC-2 Reservation: %s Initiator: %s\n",
- se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(),
- se_nacl->initiatorname);
- spin_unlock(&dev->dev_reservation_lock);
-
- return *len;
+ return len;
}
static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev,
char *page)
{
- ssize_t len = 0;
+ int ret;
- switch (dev->t10_pr.res_type) {
- case SPC3_PERSISTENT_RESERVATIONS:
- target_core_dev_pr_show_spc3_res(dev, page, &len);
- break;
- case SPC2_RESERVATIONS:
- target_core_dev_pr_show_spc2_res(dev, page, &len);
- break;
- case SPC_PASSTHROUGH:
- len += sprintf(page+len, "Passthrough\n");
- break;
- default:
- len += sprintf(page+len, "Unknown\n");
- break;
- }
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return sprintf(page, "Passthrough\n");
- return len;
+ spin_lock(&dev->dev_reservation_lock);
+ if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
+ ret = target_core_dev_pr_show_spc2_res(dev, page);
+ else
+ ret = target_core_dev_pr_show_spc3_res(dev, page);
+ spin_unlock(&dev->dev_reservation_lock);
+ return ret;
}
SE_DEV_PR_ATTR_RO(res_holder);
static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts(
struct se_device *dev, char *page)
{
- struct t10_pr_registration *pr_reg;
ssize_t len = 0;
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
- return len;
-
spin_lock(&dev->dev_reservation_lock);
- pr_reg = dev->dev_pr_res_holder;
- if (!pr_reg) {
+ if (!dev->dev_pr_res_holder) {
len = sprintf(page, "No SPC-3 Reservation holder\n");
- spin_unlock(&dev->dev_reservation_lock);
- return len;
- }
- /*
- * See All Target Ports (ALL_TG_PT) bit in spcr17, section 6.14.3
- * Basic PERSISTENT RESERVER OUT parameter list, page 290
- */
- if (pr_reg->pr_reg_all_tg_pt)
+ } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) {
len = sprintf(page, "SPC-3 Reservation: All Target"
" Ports registration\n");
- else
+ } else {
len = sprintf(page, "SPC-3 Reservation: Single"
" Target Port registration\n");
- spin_unlock(&dev->dev_reservation_lock);
+ }
+ spin_unlock(&dev->dev_reservation_lock);
return len;
}
static ssize_t target_core_dev_pr_show_attr_res_pr_generation(
struct se_device *dev, char *page)
{
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
- return 0;
-
return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation);
}
struct target_core_fabric_ops *tfo;
ssize_t len = 0;
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
- return len;
-
spin_lock(&dev->dev_reservation_lock);
pr_reg = dev->dev_pr_res_holder;
if (!pr_reg) {
len = sprintf(page, "No SPC-3 Reservation holder\n");
- spin_unlock(&dev->dev_reservation_lock);
- return len;
+ goto out_unlock;
}
+
se_nacl = pr_reg->pr_reg_nacl;
se_tpg = se_nacl->se_tpg;
lun = pr_reg->pr_reg_tg_pt_lun;
" %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi,
tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg),
tfo->get_fabric_name(), lun->unpacked_lun);
- spin_unlock(&dev->dev_reservation_lock);
+out_unlock:
+ spin_unlock(&dev->dev_reservation_lock);
return len;
}
ssize_t len = 0;
int reg_count = 0, prf_isid;
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
- return len;
-
len += sprintf(page+len, "SPC-3 PR Registrations:\n");
spin_lock(&dev->t10_pr.registration_lock);
struct t10_pr_registration *pr_reg;
ssize_t len = 0;
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
- return len;
-
spin_lock(&dev->dev_reservation_lock);
pr_reg = dev->dev_pr_res_holder;
- if (!pr_reg) {
+ if (pr_reg) {
+ len = sprintf(page, "SPC-3 Reservation Type: %s\n",
+ core_scsi3_pr_dump_type(pr_reg->pr_res_type));
+ } else {
len = sprintf(page, "No SPC-3 Reservation holder\n");
- spin_unlock(&dev->dev_reservation_lock);
- return len;
}
- len = sprintf(page, "SPC-3 Reservation Type: %s\n",
- core_scsi3_pr_dump_type(pr_reg->pr_res_type));
- spin_unlock(&dev->dev_reservation_lock);
+ spin_unlock(&dev->dev_reservation_lock);
return len;
}
static ssize_t target_core_dev_pr_show_attr_res_type(
struct se_device *dev, char *page)
{
- ssize_t len = 0;
-
- switch (dev->t10_pr.res_type) {
- case SPC3_PERSISTENT_RESERVATIONS:
- len = sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
- break;
- case SPC2_RESERVATIONS:
- len = sprintf(page, "SPC2_RESERVATIONS\n");
- break;
- case SPC_PASSTHROUGH:
- len = sprintf(page, "SPC_PASSTHROUGH\n");
- break;
- default:
- len = sprintf(page, "UNKNOWN\n");
- break;
- }
-
- return len;
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return sprintf(page, "SPC_PASSTHROUGH\n");
+ else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
+ return sprintf(page, "SPC2_RESERVATIONS\n");
+ else
+ return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n");
}
SE_DEV_PR_ATTR_RO(res_type);
static ssize_t target_core_dev_pr_show_attr_res_aptpl_active(
struct se_device *dev, char *page)
{
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
return 0;
return sprintf(page, "APTPL Bit Status: %s\n",
static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata(
struct se_device *dev, char *page)
{
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
return 0;
return sprintf(page, "Ready to process PR APTPL metadata..\n");
u16 port_rpti = 0, tpgt = 0;
u8 type = 0, scope;
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return 0;
+ if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
return 0;
if (dev->export_count) {
dev->dev_attrib.emulate_tas = DA_EMULATE_TAS;
dev->dev_attrib.emulate_tpu = DA_EMULATE_TPU;
dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS;
- dev->dev_attrib.emulate_reservations = DA_EMULATE_RESERVATIONS;
dev->dev_attrib.emulate_alua = DA_EMULATE_ALUA;
dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS;
dev->dev_attrib.is_nonrot = DA_IS_NONROT;
dev->dev_index = scsi_get_new_index(SCSI_DEVICE_INDEX);
dev->creation_time = get_jiffies_64();
- core_setup_reservations(dev);
-
ret = core_setup_alua(dev);
if (ret)
goto out;
static void __core_scsi3_complete_pro_release(struct se_device *, struct se_node_acl *,
struct t10_pr_registration *, int);
-static int core_scsi2_reservation_seq_non_holder(
- struct se_cmd *cmd,
- unsigned char *cdb,
- u32 pr_reg_type)
+static int target_scsi2_reservation_check(struct se_cmd *cmd)
{
- switch (cdb[0]) {
+ struct se_device *dev = cmd->se_dev;
+ struct se_session *sess = cmd->se_sess;
+
+ switch (cmd->t_task_cdb[0]) {
case INQUIRY:
case RELEASE:
case RELEASE_10:
return 0;
default:
- return 1;
+ break;
}
- return 1;
-}
-
-static int core_scsi2_reservation_check(struct se_cmd *cmd, u32 *pr_reg_type)
-{
- struct se_device *dev = cmd->se_dev;
- struct se_session *sess = cmd->se_sess;
- int ret;
-
- if (!sess)
+ if (!dev->dev_reserved_node_acl || !sess)
return 0;
- spin_lock(&dev->dev_reservation_lock);
- if (!dev->dev_reserved_node_acl || !sess) {
- spin_unlock(&dev->dev_reservation_lock);
- return 0;
- }
- if (dev->dev_reserved_node_acl != sess->se_node_acl) {
- spin_unlock(&dev->dev_reservation_lock);
- return -EINVAL;
- }
- if (!(dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID)) {
- spin_unlock(&dev->dev_reservation_lock);
- return 0;
+ if (dev->dev_reserved_node_acl != sess->se_node_acl)
+ return -EBUSY;
+
+ if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS_WITH_ISID) {
+ if (dev->dev_res_bin_isid != sess->sess_bin_isid)
+ return -EBUSY;
}
- ret = (dev->dev_res_bin_isid == sess->sess_bin_isid) ? 0 : -EINVAL;
- spin_unlock(&dev->dev_reservation_lock);
- return ret;
+ return 0;
}
static struct t10_pr_registration *core_scsi3_locate_pr_reg(struct se_device *,
struct se_device *dev = cmd->se_dev;
struct t10_pr_registration *pr_reg;
struct t10_reservation *pr_tmpl = &dev->t10_pr;
- int crh = (dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS);
int conflict = 0;
- if (!crh)
- return -EINVAL;
-
pr_reg = core_scsi3_locate_pr_reg(cmd->se_dev, se_sess->se_node_acl,
se_sess);
if (pr_reg) {
*/
static int core_scsi3_pr_seq_non_holder(
struct se_cmd *cmd,
- unsigned char *cdb,
u32 pr_reg_type)
{
+ unsigned char *cdb = cmd->t_task_cdb;
struct se_dev_entry *se_deve;
struct se_session *se_sess = cmd->se_sess;
int other_cdb = 0, ignore_reg;
int we = 0; /* Write Exclusive */
int legacy = 0; /* Act like a legacy device and return
* RESERVATION CONFLICT on some CDBs */
- /*
- * A legacy SPC-2 reservation is being held.
- */
- if (cmd->se_dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
- return core_scsi2_reservation_seq_non_holder(cmd,
- cdb, pr_reg_type);
se_deve = se_sess->se_node_acl->device_list[cmd->orig_fe_lun];
/*
* Determine if the registration should be ignored due to
- * non-matching ISIDs in core_scsi3_pr_reservation_check().
+ * non-matching ISIDs in target_scsi3_pr_reservation_check().
*/
ignore_reg = (pr_reg_type & 0x80000000);
if (ignore_reg)
return 1; /* Conflict by default */
}
+static int target_scsi3_pr_reservation_check(struct se_cmd *cmd)
+{
+ struct se_device *dev = cmd->se_dev;
+ struct se_session *sess = cmd->se_sess;
+ u32 pr_reg_type;
+
+ if (!dev->dev_pr_res_holder)
+ return 0;
+
+ pr_reg_type = dev->dev_pr_res_holder->pr_res_type;
+ cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key;
+ if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl)
+ goto check_nonholder;
+
+ if (dev->dev_pr_res_holder->isid_present_at_reg) {
+ if (dev->dev_pr_res_holder->pr_reg_bin_isid !=
+ sess->sess_bin_isid) {
+ pr_reg_type |= 0x80000000;
+ goto check_nonholder;
+ }
+ }
+
+ return 0;
+
+check_nonholder:
+ if (core_scsi3_pr_seq_non_holder(cmd, pr_reg_type))
+ return -EBUSY;
+ return 0;
+}
+
static u32 core_scsi3_pr_generation(struct se_device *dev)
{
u32 prg;
return prg;
}
-static int core_scsi3_pr_reservation_check(
- struct se_cmd *cmd,
- u32 *pr_reg_type)
-{
- struct se_device *dev = cmd->se_dev;
- struct se_session *sess = cmd->se_sess;
- int ret;
-
- if (!sess)
- return 0;
- /*
- * A legacy SPC-2 reservation is being held.
- */
- if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
- return core_scsi2_reservation_check(cmd, pr_reg_type);
-
- spin_lock(&dev->dev_reservation_lock);
- if (!dev->dev_pr_res_holder) {
- spin_unlock(&dev->dev_reservation_lock);
- return 0;
- }
- *pr_reg_type = dev->dev_pr_res_holder->pr_res_type;
- cmd->pr_res_key = dev->dev_pr_res_holder->pr_res_key;
- if (dev->dev_pr_res_holder->pr_reg_nacl != sess->se_node_acl) {
- spin_unlock(&dev->dev_reservation_lock);
- return -EINVAL;
- }
- if (!dev->dev_pr_res_holder->isid_present_at_reg) {
- spin_unlock(&dev->dev_reservation_lock);
- return 0;
- }
- ret = (dev->dev_pr_res_holder->pr_reg_bin_isid ==
- sess->sess_bin_isid) ? 0 : -EINVAL;
- /*
- * Use bit in *pr_reg_type to notify ISID mismatch in
- * core_scsi3_pr_seq_non_holder().
- */
- if (ret != 0)
- *pr_reg_type |= 0x80000000;
- spin_unlock(&dev->dev_reservation_lock);
-
- return ret;
-}
-
static struct t10_pr_registration *__core_scsi3_do_alloc_registration(
struct se_device *dev,
struct se_node_acl *nacl,
struct se_node_acl *nacl = lun_acl->se_lun_nacl;
struct se_dev_entry *deve = nacl->device_list[lun_acl->mapped_lun];
- if (dev->t10_pr.res_type != SPC3_PERSISTENT_RESERVATIONS)
+ if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
return 0;
return __core_scsi3_check_aptpl_registration(dev, tpg, lun,
return ret;
}
-static int core_pt_reservation_check(struct se_cmd *cmd, u32 *pr_res_type)
+int target_check_reservation(struct se_cmd *cmd)
{
- return 0;
-}
+ struct se_device *dev = cmd->se_dev;
+ int ret;
-static int core_pt_seq_non_holder(
- struct se_cmd *cmd,
- unsigned char *cdb,
- u32 pr_reg_type)
-{
- return 0;
-}
+ if (!cmd->se_sess)
+ return 0;
+ if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)
+ return 0;
+ if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV)
+ return 0;
-void core_setup_reservations(struct se_device *dev)
-{
- struct t10_reservation *rest = &dev->t10_pr;
+ spin_lock(&dev->dev_reservation_lock);
+ if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS)
+ ret = target_scsi2_reservation_check(cmd);
+ else
+ ret = target_scsi3_pr_reservation_check(cmd);
+ spin_unlock(&dev->dev_reservation_lock);
- /*
- * If this device is from Target_Core_Mod/pSCSI, use the reservations
- * of the Underlying SCSI hardware. In Linux/SCSI terms, this can
- * cause a problem because libata and some SATA RAID HBAs appear
- * under Linux/SCSI, but to emulate reservations themselves.
- */
- if ((dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) ||
- (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV &&
- !dev->dev_attrib.emulate_reservations)) {
- rest->res_type = SPC_PASSTHROUGH;
- rest->pr_ops.t10_reservation_check = &core_pt_reservation_check;
- rest->pr_ops.t10_seq_non_holder = &core_pt_seq_non_holder;
- pr_debug("%s: Using SPC_PASSTHROUGH, no reservation"
- " emulation\n", dev->transport->name);
- } else if (dev->transport->get_device_rev(dev) >= SCSI_3) {
- rest->res_type = SPC3_PERSISTENT_RESERVATIONS;
- rest->pr_ops.t10_reservation_check = &core_scsi3_pr_reservation_check;
- rest->pr_ops.t10_seq_non_holder = &core_scsi3_pr_seq_non_holder;
- pr_debug("%s: Using SPC3_PERSISTENT_RESERVATIONS"
- " emulation\n", dev->transport->name);
- } else {
- rest->res_type = SPC2_RESERVATIONS;
- rest->pr_ops.t10_reservation_check = &core_scsi2_reservation_check;
- rest->pr_ops.t10_seq_non_holder =
- &core_scsi2_reservation_seq_non_holder;
- pr_debug("%s: Using SPC2_RESERVATIONS emulation\n",
- dev->transport->name);
- }
+ return ret;
}
extern int target_scsi3_emulate_pr_in(struct se_cmd *);
extern int target_scsi3_emulate_pr_out(struct se_cmd *);
-extern void core_setup_reservations(struct se_device *);
+extern int target_check_reservation(struct se_cmd *cmd);
#endif /* TARGET_CORE_PR_H */
*size = (cdb[7] << 8) + cdb[8];
break;
case PERSISTENT_RESERVE_IN:
- if (dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS)
- cmd->execute_cmd = target_scsi3_emulate_pr_in;
*size = (cdb[7] << 8) + cdb[8];
+ cmd->execute_cmd = target_scsi3_emulate_pr_in;
break;
case PERSISTENT_RESERVE_OUT:
- if (dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS)
- cmd->execute_cmd = target_scsi3_emulate_pr_out;
*size = (cdb[7] << 8) + cdb[8];
+ cmd->execute_cmd = target_scsi3_emulate_pr_out;
break;
case RELEASE:
case RELEASE_10:
else
*size = cmd->data_length;
- if (dev->t10_pr.res_type != SPC_PASSTHROUGH)
- cmd->execute_cmd = target_scsi2_reservation_release;
+ cmd->execute_cmd = target_scsi2_reservation_release;
break;
case RESERVE:
case RESERVE_10:
else
*size = cmd->data_length;
- /*
- * Setup the legacy emulated handler for SPC-2 and
- * >= SPC-3 compatible reservation handling (CRH=1)
- * Otherwise, we assume the underlying SCSI logic is
- * is running in SPC_PASSTHROUGH, and wants reservations
- * emulation disabled.
- */
- if (dev->t10_pr.res_type != SPC_PASSTHROUGH)
- cmd->execute_cmd = target_scsi2_reservation_reserve;
+ cmd->execute_cmd = target_scsi2_reservation_reserve;
break;
case REQUEST_SENSE:
*size = cdb[4];
unsigned char *cdb)
{
struct se_device *dev = cmd->se_dev;
- u32 pr_reg_type = 0;
u8 alua_ascq = 0;
unsigned long flags;
int ret;
/*
* Check status for SPC-3 Persistent Reservations
*/
- if (dev->t10_pr.pr_ops.t10_reservation_check(cmd, &pr_reg_type)) {
- if (dev->t10_pr.pr_ops.t10_seq_non_holder(
- cmd, cdb, pr_reg_type) != 0) {
- cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
- cmd->se_cmd_flags |= SCF_SCSI_RESERVATION_CONFLICT;
- cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
- cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
- return -EBUSY;
- }
- /*
- * This means the CDB is allowed for the SCSI Initiator port
- * when said port is *NOT* holding the legacy SPC-2 or
- * SPC-3 Persistent Reservation.
- */
+ ret = target_check_reservation(cmd);
+ if (ret) {
+ cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION;
+ cmd->se_cmd_flags |= SCF_SCSI_RESERVATION_CONFLICT;
+ cmd->scsi_status = SAM_STAT_RESERVATION_CONFLICT;
+ cmd->scsi_sense_reason = TCM_RESERVATION_CONFLICT;
+ return ret;
}
ret = dev->transport->parse_cdb(cmd);
*/
#define DA_EMULATE_TPWS 0
/* No Emulation for PSCSI by default */
-#define DA_EMULATE_RESERVATIONS 0
-/* No Emulation for PSCSI by default */
#define DA_EMULATE_ALUA 0
/* Enforce SCSI Initiator Port TransportID with 'ISID' for PR */
#define DA_ENFORCE_PR_ISIDS 1
struct list_head t10_vpd_list;
};
-
-/*
- * Used by TCM Core internally to signal if >= SPC-3 persistent reservations
- * emulation is enabled or disabled, or running in with TCM/pSCSI passthrough
- * mode
- */
-typedef enum {
- SPC_PASSTHROUGH,
- SPC2_RESERVATIONS,
- SPC3_PERSISTENT_RESERVATIONS
-} t10_reservations_index_t;
-
struct t10_pr_registration {
/* Used for fabrics that contain WWN+ISID */
#define PR_REG_ISID_LEN 16
struct list_head pr_reg_atp_mem_list;
};
-/*
- * This set of function pointer ops is set based upon SPC3_PERSISTENT_RESERVATIONS,
- * SPC2_RESERVATIONS or SPC_PASSTHROUGH in drivers/target/target_core_pr.c:
- * core_setup_reservations()
- */
-struct t10_reservation_ops {
- int (*t10_reservation_check)(struct se_cmd *, u32 *);
- int (*t10_seq_non_holder)(struct se_cmd *, unsigned char *, u32);
- int (*t10_pr_register)(struct se_cmd *);
- int (*t10_pr_clear)(struct se_cmd *);
-};
-
struct t10_reservation {
/* Reservation effects all target ports */
int pr_all_tg_pt;
#define PR_APTPL_BUF_LEN 8192
u32 pr_aptpl_buf_len;
u32 pr_generation;
- t10_reservations_index_t res_type;
spinlock_t registration_lock;
spinlock_t aptpl_reg_lock;
/*
struct se_node_acl *pr_res_holder;
struct list_head registration_list;
struct list_head aptpl_reg_list;
- struct t10_reservation_ops pr_ops;
};
struct se_tmr_req {
int emulate_tas;
int emulate_tpu;
int emulate_tpws;
- int emulate_reservations;
int emulate_alua;
int enforce_pr_isids;
int is_nonrot;
projects / GitHub / LineageOS / G12 / android_kernel_amlogic_linux-4.9.git / commitdiff