diff options
| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 14:48:06 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-12-28 14:48:06 -0800 |
| commit | 938edb8a31b976c9a92eb0cd4ff481e93f76c1f1 (patch) | |
| tree | 0854d5f6859d51032f1d853eaa8ab0e8647fb0cb /drivers/target | |
| parent | Merge tag 'dma-mapping-4.21' of git://git.infradead.org/users/hch/dma-mapping (diff) | |
| parent | scsi: isci: request: mark expected switch fall-through (diff) | |
| download | linux-dev-938edb8a31b976c9a92eb0cd4ff481e93f76c1f1.tar.xz linux-dev-938edb8a31b976c9a92eb0cd4ff481e93f76c1f1.zip | |
Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI updates from James Bottomley:
"This is mostly update of the usual drivers: smarpqi, lpfc, qedi,
megaraid_sas, libsas, zfcp, mpt3sas, hisi_sas.
Additionally, we have a pile of annotation, unused variable and minor
updates.
The big API change is the updates for Christoph's DMA rework which
include removing the DISABLE_CLUSTERING flag.
And finally there are a couple of target tree updates"
* tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (259 commits)
scsi: isci: request: mark expected switch fall-through
scsi: isci: remote_node_context: mark expected switch fall-throughs
scsi: isci: remote_device: Mark expected switch fall-throughs
scsi: isci: phy: Mark expected switch fall-through
scsi: iscsi: Capture iscsi debug messages using tracepoints
scsi: myrb: Mark expected switch fall-throughs
scsi: megaraid: fix out-of-bound array accesses
scsi: mpt3sas: mpt3sas_scsih: Mark expected switch fall-through
scsi: fcoe: remove set but not used variable 'port'
scsi: smartpqi: call pqi_free_interrupts() in pqi_shutdown()
scsi: smartpqi: fix build warnings
scsi: smartpqi: update driver version
scsi: smartpqi: add ofa support
scsi: smartpqi: increase fw status register read timeout
scsi: smartpqi: bump driver version
scsi: smartpqi: add smp_utils support
scsi: smartpqi: correct lun reset issues
scsi: smartpqi: correct volume status
scsi: smartpqi: do not offline disks for transient did no connect conditions
scsi: smartpqi: allow for larger raid maps
...
Diffstat (limited to 'drivers/target')
21 files changed, 500 insertions, 570 deletions
diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c index c1d5a173553d..984941e036c8 100644 --- a/drivers/target/iscsi/iscsi_target.c +++ b/drivers/target/iscsi/iscsi_target.c @@ -1493,8 +1493,6 @@ __iscsit_check_dataout_hdr(struct iscsi_conn *conn, void *buf, if (hdr->flags & ISCSI_FLAG_CMD_FINAL) iscsit_stop_dataout_timer(cmd); - transport_check_aborted_status(se_cmd, - (hdr->flags & ISCSI_FLAG_CMD_FINAL)); return iscsit_dump_data_payload(conn, payload_length, 1); } } else { @@ -1509,12 +1507,9 @@ __iscsit_check_dataout_hdr(struct iscsi_conn *conn, void *buf, * TASK_ABORTED status. */ if (se_cmd->transport_state & CMD_T_ABORTED) { - if (hdr->flags & ISCSI_FLAG_CMD_FINAL) - if (--cmd->outstanding_r2ts < 1) { - iscsit_stop_dataout_timer(cmd); - transport_check_aborted_status( - se_cmd, 1); - } + if (hdr->flags & ISCSI_FLAG_CMD_FINAL && + --cmd->outstanding_r2ts < 1) + iscsit_stop_dataout_timer(cmd); return iscsit_dump_data_payload(conn, payload_length, 1); } diff --git a/drivers/target/iscsi/iscsi_target_configfs.c b/drivers/target/iscsi/iscsi_target_configfs.c index 95d0a22b2ad6..a5481dfeae8d 100644 --- a/drivers/target/iscsi/iscsi_target_configfs.c +++ b/drivers/target/iscsi/iscsi_target_configfs.c @@ -1343,11 +1343,6 @@ static struct configfs_attribute *lio_target_discovery_auth_attrs[] = { /* Start functions for target_core_fabric_ops */ -static char *iscsi_get_fabric_name(void) -{ - return "iSCSI"; -} - static int iscsi_get_cmd_state(struct se_cmd *se_cmd) { struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd); @@ -1549,9 +1544,9 @@ static void lio_release_cmd(struct se_cmd *se_cmd) const struct target_core_fabric_ops iscsi_ops = { .module = THIS_MODULE, - .name = "iscsi", + .fabric_alias = "iscsi", + .fabric_name = "iSCSI", .node_acl_size = sizeof(struct iscsi_node_acl), - .get_fabric_name = iscsi_get_fabric_name, .tpg_get_wwn = lio_tpg_get_endpoint_wwn, .tpg_get_tag = lio_tpg_get_tag, .tpg_get_default_depth = lio_tpg_get_default_depth, @@ -1596,4 +1591,6 @@ const struct target_core_fabric_ops iscsi_ops = { .tfc_tpg_nacl_attrib_attrs = lio_target_nacl_attrib_attrs, .tfc_tpg_nacl_auth_attrs = lio_target_nacl_auth_attrs, .tfc_tpg_nacl_param_attrs = lio_target_nacl_param_attrs, + + .write_pending_must_be_called = true, }; diff --git a/drivers/target/iscsi/iscsi_target_erl1.c b/drivers/target/iscsi/iscsi_target_erl1.c index a211e8154f4c..1b54a9c70851 100644 --- a/drivers/target/iscsi/iscsi_target_erl1.c +++ b/drivers/target/iscsi/iscsi_target_erl1.c @@ -943,20 +943,8 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo) return 0; } spin_unlock_bh(&cmd->istate_lock); - /* - * Determine if delayed TASK_ABORTED status for WRITEs - * should be sent now if no unsolicited data out - * payloads are expected, or if the delayed status - * should be sent after unsolicited data out with - * ISCSI_FLAG_CMD_FINAL set in iscsi_handle_data_out() - */ - if (transport_check_aborted_status(se_cmd, - (cmd->unsolicited_data == 0)) != 0) + if (cmd->se_cmd.transport_state & CMD_T_ABORTED) return 0; - /* - * Otherwise send CHECK_CONDITION and sense for - * exception - */ return transport_send_check_condition_and_sense(se_cmd, cmd->sense_reason, 0); } @@ -974,13 +962,7 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo) if (!(cmd->cmd_flags & ICF_NON_IMMEDIATE_UNSOLICITED_DATA)) { - /* - * Send the delayed TASK_ABORTED status for - * WRITEs if no more unsolicitied data is - * expected. - */ - if (transport_check_aborted_status(se_cmd, 1) - != 0) + if (cmd->se_cmd.transport_state & CMD_T_ABORTED) return 0; iscsit_set_dataout_sequence_values(cmd); @@ -995,11 +977,7 @@ int iscsit_execute_cmd(struct iscsi_cmd *cmd, int ooo) if ((cmd->data_direction == DMA_TO_DEVICE) && !(cmd->cmd_flags & ICF_NON_IMMEDIATE_UNSOLICITED_DATA)) { - /* - * Send the delayed TASK_ABORTED status for WRITEs if - * no more nsolicitied data is expected. - */ - if (transport_check_aborted_status(se_cmd, 1) != 0) + if (cmd->se_cmd.transport_state & CMD_T_ABORTED) return 0; iscsit_set_unsoliticed_dataout(cmd); diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index bc8918f382e4..7bd7c0c0db6f 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -324,7 +324,7 @@ static struct scsi_host_template tcm_loop_driver_template = { .sg_tablesize = 256, .cmd_per_lun = 1024, .max_sectors = 0xFFFF, - .use_clustering = DISABLE_CLUSTERING, + .dma_boundary = PAGE_SIZE - 1, .slave_alloc = tcm_loop_slave_alloc, .module = THIS_MODULE, .track_queue_depth = 1, @@ -460,11 +460,6 @@ static void tcm_loop_release_core_bus(void) pr_debug("Releasing TCM Loop Core BUS\n"); } -static char *tcm_loop_get_fabric_name(void) -{ - return "loopback"; -} - static inline struct tcm_loop_tpg *tl_tpg(struct se_portal_group *se_tpg) { return container_of(se_tpg, struct tcm_loop_tpg, tl_se_tpg); @@ -1149,8 +1144,7 @@ static struct configfs_attribute *tcm_loop_wwn_attrs[] = { static const struct target_core_fabric_ops loop_ops = { .module = THIS_MODULE, - .name = "loopback", - .get_fabric_name = tcm_loop_get_fabric_name, + .fabric_name = "loopback", .tpg_get_wwn = tcm_loop_get_endpoint_wwn, .tpg_get_tag = tcm_loop_get_tag, .tpg_check_demo_mode = tcm_loop_check_demo_mode, diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c index 3d10189ecedc..08cee13dfb9a 100644 --- a/drivers/target/sbp/sbp_target.c +++ b/drivers/target/sbp/sbp_target.c @@ -1694,11 +1694,6 @@ static int sbp_check_false(struct se_portal_group *se_tpg) return 0; } -static char *sbp_get_fabric_name(void) -{ - return "sbp"; -} - static char *sbp_get_fabric_wwn(struct se_portal_group *se_tpg) { struct sbp_tpg *tpg = container_of(se_tpg, struct sbp_tpg, se_tpg); @@ -2323,8 +2318,7 @@ static struct configfs_attribute *sbp_tpg_attrib_attrs[] = { static const struct target_core_fabric_ops sbp_ops = { .module = THIS_MODULE, - .name = "sbp", - .get_fabric_name = sbp_get_fabric_name, + .fabric_name = "sbp", .tpg_get_wwn = sbp_get_fabric_wwn, .tpg_get_tag = sbp_get_tag, .tpg_check_demo_mode = sbp_check_true, diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index 4f134b0c3e29..6b0d9beacf90 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -451,7 +451,7 @@ static inline void set_ascq(struct se_cmd *cmd, u8 alua_ascq) pr_debug("[%s]: ALUA TG Port not available, " "SenseKey: NOT_READY, ASC/ASCQ: " "0x04/0x%02x\n", - cmd->se_tfo->get_fabric_name(), alua_ascq); + cmd->se_tfo->fabric_name, alua_ascq); cmd->scsi_asc = 0x04; cmd->scsi_ascq = alua_ascq; @@ -1229,13 +1229,13 @@ static int core_alua_update_tpg_secondary_metadata(struct se_lun *lun) if (se_tpg->se_tpg_tfo->tpg_get_tag != NULL) { path = kasprintf(GFP_KERNEL, "%s/alua/%s/%s+%hu/lun_%llu", - db_root, se_tpg->se_tpg_tfo->get_fabric_name(), + db_root, se_tpg->se_tpg_tfo->fabric_name, se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg), se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg), lun->unpacked_lun); } else { path = kasprintf(GFP_KERNEL, "%s/alua/%s/%s/lun_%llu", - db_root, se_tpg->se_tpg_tfo->get_fabric_name(), + db_root, se_tpg->se_tpg_tfo->fabric_name, se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg), lun->unpacked_lun); } diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index f6b1549f4142..72016d0dfca5 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -172,7 +172,10 @@ static struct target_fabric_configfs *target_core_get_fabric( mutex_lock(&g_tf_lock); list_for_each_entry(tf, &g_tf_list, tf_list) { - if (!strcmp(tf->tf_ops->name, name)) { + const char *cmp_name = tf->tf_ops->fabric_alias; + if (!cmp_name) + cmp_name = tf->tf_ops->fabric_name; + if (!strcmp(cmp_name, name)) { atomic_inc(&tf->tf_access_cnt); mutex_unlock(&g_tf_lock); return tf; @@ -249,7 +252,7 @@ static struct config_group *target_core_register_fabric( return ERR_PTR(-EINVAL); } pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" - " %s\n", tf->tf_ops->name); + " %s\n", tf->tf_ops->fabric_name); /* * On a successful target_core_get_fabric() look, the returned * struct target_fabric_configfs *tf will contain a usage reference. @@ -282,7 +285,7 @@ static void target_core_deregister_fabric( " tf list\n", config_item_name(item)); pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" - " %s\n", tf->tf_ops->name); + " %s\n", tf->tf_ops->fabric_name); atomic_dec(&tf->tf_access_cnt); pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" @@ -342,17 +345,20 @@ EXPORT_SYMBOL(target_undepend_item); static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) { - if (!tfo->name) { - pr_err("Missing tfo->name\n"); - return -EINVAL; + if (tfo->fabric_alias) { + if (strlen(tfo->fabric_alias) >= TARGET_FABRIC_NAME_SIZE) { + pr_err("Passed alias: %s exceeds " + "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_alias); + return -EINVAL; + } } - if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) { - pr_err("Passed name: %s exceeds TARGET_FABRIC" - "_NAME_SIZE\n", tfo->name); + if (!tfo->fabric_name) { + pr_err("Missing tfo->fabric_name\n"); return -EINVAL; } - if (!tfo->get_fabric_name) { - pr_err("Missing tfo->get_fabric_name()\n"); + if (strlen(tfo->fabric_name) >= TARGET_FABRIC_NAME_SIZE) { + pr_err("Passed name: %s exceeds " + "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_name); return -EINVAL; } if (!tfo->tpg_get_wwn) { @@ -486,7 +492,7 @@ void target_unregister_template(const struct target_core_fabric_ops *fo) mutex_lock(&g_tf_lock); list_for_each_entry(t, &g_tf_list, tf_list) { - if (!strcmp(t->tf_ops->name, fo->name)) { + if (!strcmp(t->tf_ops->fabric_name, fo->fabric_name)) { BUG_ON(atomic_read(&t->tf_access_cnt)); list_del(&t->tf_list); mutex_unlock(&g_tf_lock); @@ -532,9 +538,9 @@ DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); +DEF_CONFIGFS_ATTRIB_SHOW(emulate_pr); DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); -DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_format); DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify); DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); @@ -592,6 +598,7 @@ static ssize_t _name##_store(struct config_item *item, const char *page, \ DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); +DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_pr); DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); @@ -613,12 +620,17 @@ static void dev_set_t10_wwn_model_alias(struct se_device *dev) const char *configname; configname = config_item_name(&dev->dev_group.cg_item); - if (strlen(configname) >= 16) { + if (strlen(configname) >= INQUIRY_MODEL_LEN) { pr_warn("dev[%p]: Backstore name '%s' is too long for " - "INQUIRY_MODEL, truncating to 16 bytes\n", dev, + "INQUIRY_MODEL, truncating to 15 characters\n", dev, configname); } - snprintf(&dev->t10_wwn.model[0], 16, "%s", configname); + /* + * XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1) + * here without potentially breaking existing setups, so continue to + * truncate one byte shorter than what can be carried in INQUIRY. + */ + strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN); } static ssize_t emulate_model_alias_store(struct config_item *item, @@ -640,11 +652,12 @@ static ssize_t emulate_model_alias_store(struct config_item *item, if (ret < 0) return ret; + BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); if (flag) { dev_set_t10_wwn_model_alias(dev); } else { - strncpy(&dev->t10_wwn.model[0], - dev->transport->inquiry_prod, 16); + strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, + sizeof(dev->t10_wwn.model)); } da->emulate_model_alias = flag; return count; @@ -1116,9 +1129,10 @@ CONFIGFS_ATTR(, emulate_tpu); CONFIGFS_ATTR(, emulate_tpws); CONFIGFS_ATTR(, emulate_caw); CONFIGFS_ATTR(, emulate_3pc); +CONFIGFS_ATTR(, emulate_pr); CONFIGFS_ATTR(, pi_prot_type); CONFIGFS_ATTR_RO(, hw_pi_prot_type); -CONFIGFS_ATTR(, pi_prot_format); +CONFIGFS_ATTR_WO(, pi_prot_format); CONFIGFS_ATTR(, pi_prot_verify); CONFIGFS_ATTR(, enforce_pr_isids); CONFIGFS_ATTR(, is_nonrot); @@ -1156,6 +1170,7 @@ struct configfs_attribute *sbc_attrib_attrs[] = { &attr_emulate_tpws, &attr_emulate_caw, &attr_emulate_3pc, + &attr_emulate_pr, &attr_pi_prot_type, &attr_hw_pi_prot_type, &attr_pi_prot_format, @@ -1211,6 +1226,74 @@ static struct t10_wwn *to_t10_wwn(struct config_item *item) } /* + * STANDARD and VPD page 0x83 T10 Vendor Identification + */ +static ssize_t target_wwn_vendor_id_show(struct config_item *item, + char *page) +{ + return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]); +} + +static ssize_t target_wwn_vendor_id_store(struct config_item *item, + const char *page, size_t count) +{ + struct t10_wwn *t10_wwn = to_t10_wwn(item); + struct se_device *dev = t10_wwn->t10_dev; + /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ + unsigned char buf[INQUIRY_VENDOR_LEN + 2]; + char *stripped = NULL; + size_t len; + int i; + + len = strlcpy(buf, page, sizeof(buf)); + if (len < sizeof(buf)) { + /* Strip any newline added from userspace. */ + stripped = strstrip(buf); + len = strlen(stripped); + } + if (len > INQUIRY_VENDOR_LEN) { + pr_err("Emulated T10 Vendor Identification exceeds" + " INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN) + "\n"); + return -EOVERFLOW; + } + + /* + * SPC 4.3.1: + * ASCII data fields shall contain only ASCII printable characters (i.e., + * code values 20h to 7Eh) and may be terminated with one or more ASCII + * null (00h) characters. + */ + for (i = 0; i < len; i++) { + if ((stripped[i] < 0x20) || (stripped[i] > 0x7E)) { + pr_err("Emulated T10 Vendor Identification contains" + " non-ASCII-printable characters\n"); + return -EINVAL; + } + } + + /* + * Check to see if any active exports exist. If they do exist, fail + * here as changing this information on the fly (underneath the + * initiator side OS dependent multipath code) could cause negative + * effects. + */ + if (dev->export_count) { + pr_err("Unable to set T10 Vendor Identification while" + " active %d exports exist\n", dev->export_count); + return -EINVAL; + } + + BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1); + strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor)); + + pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:" + " %s\n", dev->t10_wwn.vendor); + + return count; +} + +/* * VPD page 0x80 Unit serial */ static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, @@ -1356,6 +1439,7 @@ DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); /* VPD page 0x83 Association: SCSI Target Device */ DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); +CONFIGFS_ATTR(target_wwn_, vendor_id); CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); @@ -1363,6 +1447,7 @@ CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); static struct configfs_attribute *target_core_dev_wwn_attrs[] = { + &target_wwn_attr_vendor_id, &target_wwn_attr_vpd_unit_serial, &target_wwn_attr_vpd_protocol_identifier, &target_wwn_attr_vpd_assoc_logical_unit, @@ -1400,7 +1485,7 @@ static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", - se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), + se_nacl->se_tpg->se_tpg_tfo->fabric_name, se_nacl->initiatorname, i_buf); } @@ -1414,7 +1499,7 @@ static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 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->se_tpg->se_tpg_tfo->fabric_name, se_nacl->initiatorname); } else { len = sprintf(page, "No SPC-2 Reservation holder\n"); @@ -1427,6 +1512,9 @@ static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) struct se_device *dev = pr_to_dev(item); int ret; + if (!dev->dev_attrib.emulate_pr) + return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); + if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) return sprintf(page, "Passthrough\n"); @@ -1489,13 +1577,13 @@ static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, tfo = se_tpg->se_tpg_tfo; len += sprintf(page+len, "SPC-3 Reservation: %s" - " Target Node Endpoint: %s\n", tfo->get_fabric_name(), + " Target Node Endpoint: %s\n", tfo->fabric_name, tfo->tpg_get_wwn(se_tpg)); len += sprintf(page+len, "SPC-3 Reservation: Relative Port" " Identifier Tag: %hu %s Portal Group Tag: %hu" " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, - tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), - tfo->get_fabric_name(), pr_reg->pr_aptpl_target_lun); + tfo->fabric_name, tfo->tpg_get_tag(se_tpg), + tfo->fabric_name, pr_reg->pr_aptpl_target_lun); out_unlock: spin_unlock(&dev->dev_reservation_lock); @@ -1526,7 +1614,7 @@ static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", - tfo->get_fabric_name(), + tfo->fabric_name, pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, pr_reg->pr_res_generation); @@ -1567,12 +1655,14 @@ static ssize_t target_pr_res_type_show(struct config_item *item, char *page) { struct se_device *dev = pr_to_dev(item); + if (!dev->dev_attrib.emulate_pr) + return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) return sprintf(page, "SPC_PASSTHROUGH\n"); - else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) + if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) return sprintf(page, "SPC2_RESERVATIONS\n"); - else - return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); + + return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); } static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, @@ -1580,7 +1670,8 @@ static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, { struct se_device *dev = pr_to_dev(item); - if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) + if (!dev->dev_attrib.emulate_pr || + (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) return 0; return sprintf(page, "APTPL Bit Status: %s\n", @@ -1592,7 +1683,8 @@ static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, { struct se_device *dev = pr_to_dev(item); - if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) + if (!dev->dev_attrib.emulate_pr || + (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) return 0; return sprintf(page, "Ready to process PR APTPL metadata..\n"); @@ -1638,7 +1730,8 @@ static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, u16 tpgt = 0; u8 type = 0; - if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) + if (!dev->dev_attrib.emulate_pr || + (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) return count; if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) return count; @@ -2746,7 +2839,7 @@ static ssize_t target_tg_pt_gp_members_show(struct config_item *item, struct se_portal_group *tpg = lun->lun_tpg; cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" - "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), + "/%s\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpg->se_tpg_tfo->tpg_get_tag(tpg), config_item_name(&lun->lun_group.cg_item)); diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 47b5ef153135..93c56f4a9911 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -95,7 +95,7 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u64 unpacked_lun) deve->lun_access_ro) { pr_err("TARGET_CORE[%s]: Detected WRITE_PROTECTED LUN" " Access for 0x%08llx\n", - se_cmd->se_tfo->get_fabric_name(), + se_cmd->se_tfo->fabric_name, unpacked_lun); rcu_read_unlock(); ret = TCM_WRITE_PROTECTED; @@ -114,7 +114,7 @@ out_unlock: if (unpacked_lun != 0) { pr_err("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" " Access for 0x%08llx\n", - se_cmd->se_tfo->get_fabric_name(), + se_cmd->se_tfo->fabric_name, unpacked_lun); return TCM_NON_EXISTENT_LUN; } @@ -188,7 +188,7 @@ out_unlock: if (!se_lun) { pr_debug("TARGET_CORE[%s]: Detected NON_EXISTENT_LUN" " Access for 0x%08llx\n", - se_cmd->se_tfo->get_fabric_name(), + se_cmd->se_tfo->fabric_name, unpacked_lun); return -ENODEV; } @@ -237,7 +237,7 @@ struct se_dev_entry *core_get_se_deve_from_rtpi( if (!lun) { pr_err("%s device entries device pointer is" " NULL, but Initiator has access.\n", - tpg->se_tpg_tfo->get_fabric_name()); + tpg->se_tpg_tfo->fabric_name); continue; } if (lun->lun_rtpi != rtpi) @@ -571,9 +571,9 @@ int core_dev_add_lun( return rc; pr_debug("%s_TPG[%u]_LUN[%llu] - Activated %s Logical Unit from" - " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), + " CORE HBA: %u\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, - tpg->se_tpg_tfo->get_fabric_name(), dev->se_hba->hba_id); + tpg->se_tpg_tfo->fabric_name, dev->se_hba->hba_id); /* * Update LUN maps for dynamically added initiators when * generate_node_acl is enabled. @@ -604,9 +604,9 @@ void core_dev_del_lun( struct se_lun *lun) { pr_debug("%s_TPG[%u]_LUN[%llu] - Deactivating %s Logical Unit from" - " device object\n", tpg->se_tpg_tfo->get_fabric_name(), + " device object\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, - tpg->se_tpg_tfo->get_fabric_name()); + tpg->se_tpg_tfo->fabric_name); core_tpg_remove_lun(tpg, lun); } @@ -621,7 +621,7 @@ struct se_lun_acl *core_dev_init_initiator_node_lun_acl( if (strlen(nacl->initiatorname) >= TRANSPORT_IQN_LEN) { pr_err("%s InitiatorName exceeds maximum size.\n", - tpg->se_tpg_tfo->get_fabric_name()); + tpg->se_tpg_tfo->fabric_name); *ret = -EOVERFLOW; return NULL; } @@ -664,7 +664,7 @@ int core_dev_add_initiator_node_lun_acl( return -EINVAL; pr_debug("%s_TPG[%hu]_LUN[%llu->%llu] - Added %s ACL for " - " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), + " InitiatorNode: %s\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, lun_access_ro ? "RO" : "RW", nacl->initiatorname); @@ -697,7 +697,7 @@ int core_dev_del_initiator_node_lun_acl( pr_debug("%s_TPG[%hu]_LUN[%llu] - Removed ACL for" " InitiatorNode: %s Mapped LUN: %llu\n", - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, nacl->initiatorname, lacl->mapped_lun); @@ -709,9 +709,9 @@ void core_dev_free_initiator_node_lun_acl( struct se_lun_acl *lacl) { pr_debug("%s_TPG[%hu] - Freeing ACL for %s InitiatorNode: %s" - " Mapped LUN: %llu\n", tpg->se_tpg_tfo->get_fabric_name(), + " Mapped LUN: %llu\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, lacl->se_lun_nacl->initiatorname, lacl->mapped_lun); kfree(lacl); @@ -720,36 +720,17 @@ void core_dev_free_initiator_node_lun_acl( static void scsi_dump_inquiry(struct se_device *dev) { struct t10_wwn *wwn = &dev->t10_wwn; - char buf[17]; - int i, device_type; + int device_type = dev->transport->get_device_type(dev); + /* * Print Linux/SCSI style INQUIRY formatting to the kernel ring buffer */ - for (i = 0; i < 8; i++) - if (wwn->vendor[i] >= 0x20) - buf[i] = wwn->vendor[i]; - else - buf[i] = ' '; - buf[i] = '\0'; - pr_debug(" Vendor: %s\n", buf); - - for (i = 0; i < 16; i++) - if (wwn->model[i] >= 0x20) - buf[i] = wwn->model[i]; - else - buf[i] = ' '; - buf[i] = '\0'; - pr_debug(" Model: %s\n", buf); - - for (i = 0; i < 4; i++) - if (wwn->revision[i] >= 0x20) - buf[i] = wwn->revision[i]; - else - buf[i] = ' '; - buf[i] = '\0'; - pr_debug(" Revision: %s\n", buf); - - device_type = dev->transport->get_device_type(dev); + pr_debug(" Vendor: %-" __stringify(INQUIRY_VENDOR_LEN) "s\n", + wwn->vendor); + pr_debug(" Model: %-" __stringify(INQUIRY_MODEL_LEN) "s\n", + wwn->model); + pr_debug(" Revision: %-" __stringify(INQUIRY_REVISION_LEN) "s\n", + wwn->revision); pr_debug(" Type: %s ", scsi_device_type(device_type)); } @@ -805,6 +786,7 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) dev->dev_attrib.emulate_tpws = DA_EMULATE_TPWS; dev->dev_attrib.emulate_caw = DA_EMULATE_CAW; dev->dev_attrib.emulate_3pc = DA_EMULATE_3PC; + dev->dev_attrib.emulate_pr = DA_EMULATE_PR; dev->dev_attrib.pi_prot_type = TARGET_DIF_TYPE0_PROT; dev->dev_attrib.enforce_pr_isids = DA_ENFORCE_PR_ISIDS; dev->dev_attrib.force_pr_aptpl = DA_FORCE_PR_APTPL; @@ -822,13 +804,19 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) xcopy_lun = &dev->xcopy_lun; rcu_assign_pointer(xcopy_lun->lun_se_dev, dev); - init_completion(&xcopy_lun->lun_ref_comp); init_completion(&xcopy_lun->lun_shutdown_comp); INIT_LIST_HEAD(&xcopy_lun->lun_deve_list); INIT_LIST_HEAD(&xcopy_lun->lun_dev_link); mutex_init(&xcopy_lun->lun_tg_pt_md_mutex); xcopy_lun->lun_tpg = &xcopy_pt_tpg; + /* Preload the default INQUIRY const values */ + strlcpy(dev->t10_wwn.vendor, "LIO-ORG", sizeof(dev->t10_wwn.vendor)); + strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, + sizeof(dev->t10_wwn.model)); + strlcpy(dev->t10_wwn.revision, dev->transport->inquiry_rev, + sizeof(dev->t10_wwn.revision)); + return dev; } @@ -987,35 +975,10 @@ int target_configure_device(struct se_device *dev) goto out_destroy_device; /* - * Startup the struct se_device processing thread - */ - dev->tmr_wq = alloc_workqueue("tmr-%s", WQ_MEM_RECLAIM | WQ_UNBOUND, 1, - dev->transport->name); - if (!dev->tmr_wq) { - pr_err("Unable to create tmr workqueue for %s\n", - dev->transport->name); - ret = -ENOMEM; - goto out_free_alua; - } - - /* * Setup work_queue for QUEUE_FULL */ INIT_WORK(&dev->qf_work_queue, target_qf_do_work); - /* - * Preload the initial INQUIRY const values if we are doing - * anything virtual (IBLOCK, FILEIO, RAMDISK), but not for TCM/pSCSI - * passthrough because this is being provided by the backend LLD. - */ - if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH)) { - strncpy(&dev->t10_wwn.vendor[0], "LIO-ORG", 8); - strncpy(&dev->t10_wwn.model[0], - dev->transport->inquiry_prod, 16); - strncpy(&dev->t10_wwn.revision[0], - dev->transport->inquiry_rev, 4); - } - scsi_dump_inquiry(dev); spin_lock(&hba->device_lock); @@ -1026,8 +989,6 @@ int target_configure_device(struct se_device *dev) return 0; -out_free_alua: - core_alua_free_lu_gp_mem(dev); out_destroy_device: dev->transport->destroy_device(dev); out_free_index: @@ -1046,8 +1007,6 @@ void target_free_device(struct se_device *dev) WARN_ON(!list_empty(&dev->dev_sep_list)); if (target_dev_configured(dev)) { - destroy_workqueue(dev->tmr_wq); - dev->transport->destroy_device(dev); mutex_lock(&device_mutex); @@ -1159,6 +1118,18 @@ passthrough_parse_cdb(struct se_cmd *cmd, } /* + * With emulate_pr disabled, all reservation requests should fail, + * regardless of whether or not TRANSPORT_FLAG_PASSTHROUGH_PGR is set. + */ + if (!dev->dev_attrib.emulate_pr && + ((cdb[0] == PERSISTENT_RESERVE_IN) || + (cdb[0] == PERSISTENT_RESERVE_OUT) || + (cdb[0] == RELEASE || cdb[0] == RELEASE_10) || + (cdb[0] == RESERVE || cdb[0] == RESERVE_10))) { + return TCM_UNSUPPORTED_SCSI_OPCODE; + } + + /* * For PERSISTENT RESERVE IN/OUT, RELEASE, and RESERVE we need to * emulate the response, since tcmu does not have the information * required to process these commands. diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c index aa2f4f632ebe..9a6e20a2af7d 100644 --- a/drivers/target/target_core_fabric_configfs.c +++ b/drivers/target/target_core_fabric_configfs.c @@ -203,7 +203,7 @@ static ssize_t target_fabric_mappedlun_write_protect_store( pr_debug("%s_ConfigFS: Changed Initiator ACL: %s" " Mapped LUN: %llu Write Protect bit to %s\n", - se_tpg->se_tpg_tfo->get_fabric_name(), + se_tpg->se_tpg_tfo->fabric_name, se_nacl->initiatorname, lacl->mapped_lun, (wp) ? "ON" : "OFF"); return count; diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 0c6635587930..853344415963 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -138,7 +138,6 @@ 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 *); 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 *, @@ -148,7 +147,6 @@ 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); diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index 10db5656fd5d..397f38cb7f4e 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -235,7 +235,7 @@ target_scsi2_reservation_release(struct se_cmd *cmd) tpg = sess->se_tpg; pr_debug("SCSI-2 Released reservation for %s LUN: %llu ->" " MAPPED LUN: %llu for %s\n", - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, cmd->se_lun->unpacked_lun, cmd->orig_fe_lun, sess->se_node_acl->initiatorname); @@ -278,7 +278,7 @@ target_scsi2_reservation_reserve(struct se_cmd *cmd) if (dev->dev_reserved_node_acl && (dev->dev_reserved_node_acl != sess->se_node_acl)) { pr_err("SCSI-2 RESERVATION CONFLIFT for %s fabric\n", - tpg->se_tpg_tfo->get_fabric_name()); + tpg->se_tpg_tfo->fabric_name); pr_err("Original reserver LUN: %llu %s\n", cmd->se_lun->unpacked_lun, dev->dev_reserved_node_acl->initiatorname); @@ -297,7 +297,7 @@ target_scsi2_reservation_reserve(struct se_cmd *cmd) dev->dev_reservation_flags |= DRF_SPC2_RESERVATIONS_WITH_ISID; } pr_debug("SCSI-2 Reserved %s LUN: %llu -> MAPPED LUN: %llu" - " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), + " for %s\n", tpg->se_tpg_tfo->fabric_name, cmd->se_lun->unpacked_lun, cmd->orig_fe_lun, sess->se_node_acl->initiatorname); @@ -914,11 +914,11 @@ static void core_scsi3_aptpl_reserve( pr_debug("SPC-3 PR [%s] Service Action: APTPL RESERVE created" " new reservation holder TYPE: %s ALL_TG_PT: %d\n", - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, core_scsi3_pr_dump_type(pr_reg->pr_res_type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n", - tpg->se_tpg_tfo->get_fabric_name(), node_acl->initiatorname, + tpg->se_tpg_tfo->fabric_name, node_acl->initiatorname, i_buf); } @@ -1036,19 +1036,19 @@ static void __core_scsi3_dump_registration( core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); pr_debug("SPC-3 PR [%s] Service Action: REGISTER%s Initiator" - " Node: %s%s\n", tfo->get_fabric_name(), (register_type == REGISTER_AND_MOVE) ? + " Node: %s%s\n", tfo->fabric_name, (register_type == REGISTER_AND_MOVE) ? "_AND_MOVE" : (register_type == REGISTER_AND_IGNORE_EXISTING_KEY) ? "_AND_IGNORE_EXISTING_KEY" : "", nacl->initiatorname, i_buf); pr_debug("SPC-3 PR [%s] registration on Target Port: %s,0x%04x\n", - tfo->get_fabric_name(), tfo->tpg_get_wwn(se_tpg), + tfo->fabric_name, tfo->tpg_get_wwn(se_tpg), tfo->tpg_get_tag(se_tpg)); pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" - " Port(s)\n", tfo->get_fabric_name(), + " Port(s)\n", tfo->fabric_name, (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE", dev->transport->name); pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" - " 0x%08x APTPL: %d\n", tfo->get_fabric_name(), + " 0x%08x APTPL: %d\n", tfo->fabric_name, pr_reg->pr_res_key, pr_reg->pr_res_generation, pr_reg->pr_reg_aptpl); } @@ -1329,7 +1329,7 @@ static void __core_scsi3_free_registration( */ while (atomic_read(&pr_reg->pr_res_holders) != 0) { pr_debug("SPC-3 PR [%s] waiting for pr_res_holders\n", - tfo->get_fabric_name()); + tfo->fabric_name); cpu_relax(); } @@ -1341,15 +1341,15 @@ static void __core_scsi3_free_registration( spin_lock(&pr_tmpl->registration_lock); pr_debug("SPC-3 PR [%s] Service Action: UNREGISTER Initiator" - " Node: %s%s\n", tfo->get_fabric_name(), + " Node: %s%s\n", tfo->fabric_name, pr_reg->pr_reg_nacl->initiatorname, i_buf); pr_debug("SPC-3 PR [%s] for %s TCM Subsystem %s Object Target" - " Port(s)\n", tfo->get_fabric_name(), + " Port(s)\n", tfo->fabric_name, (pr_reg->pr_reg_all_tg_pt) ? "ALL" : "SINGLE", dev->transport->name); pr_debug("SPC-3 PR [%s] SA Res Key: 0x%016Lx PRgeneration:" - " 0x%08x\n", tfo->get_fabric_name(), pr_reg->pr_res_key, + " 0x%08x\n", tfo->fabric_name, pr_reg->pr_res_key, pr_reg->pr_res_generation); if (!preempt_and_abort_list) { @@ -1645,7 +1645,7 @@ core_scsi3_decode_spec_i_port( dest_tpg = tmp_tpg; pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node:" " %s Port RTPI: %hu\n", - dest_tpg->se_tpg_tfo->get_fabric_name(), + dest_tpg->se_tpg_tfo->fabric_name, dest_node_acl->initiatorname, dest_rtpi); spin_lock(&dev->se_port_lock); @@ -1662,7 +1662,7 @@ core_scsi3_decode_spec_i_port( pr_debug("SPC-3 PR SPEC_I_PT: Got %s data_length: %u tpdl: %u" " tid_len: %d for %s + %s\n", - dest_tpg->se_tpg_tfo->get_fabric_name(), cmd->data_length, + dest_tpg->se_tpg_tfo->fabric_name, cmd->data_length, tpdl, tid_len, i_str, iport_ptr); if (tid_len > tpdl) { @@ -1683,7 +1683,7 @@ core_scsi3_decode_spec_i_port( if (!dest_se_deve) { pr_err("Unable to locate %s dest_se_deve" " from destination RTPI: %hu\n", - dest_tpg->se_tpg_tfo->get_fabric_name(), + dest_tpg->se_tpg_tfo->fabric_name, dest_rtpi); core_scsi3_nodeacl_undepend_item(dest_node_acl); @@ -1704,7 +1704,7 @@ core_scsi3_decode_spec_i_port( pr_debug("SPC-3 PR SPEC_I_PT: Located %s Node: %s" " dest_se_deve mapped_lun: %llu\n", - dest_tpg->se_tpg_tfo->get_fabric_name(), + dest_tpg->se_tpg_tfo->fabric_name, dest_node_acl->initiatorname, dest_se_deve->mapped_lun); /* @@ -1815,7 +1815,7 @@ core_scsi3_decode_spec_i_port( pr_debug("SPC-3 PR [%s] SPEC_I_PT: Successfully" " registered Transport ID for Node: %s%s Mapped LUN:" - " %llu\n", dest_tpg->se_tpg_tfo->get_fabric_name(), + " %llu\n", dest_tpg->se_tpg_tfo->fabric_name, dest_node_acl->initiatorname, i_buf, (dest_se_deve) ? dest_se_deve->mapped_lun : 0); @@ -1913,7 +1913,7 @@ static int core_scsi3_update_aptpl_buf( "res_holder=1\nres_type=%02x\n" "res_scope=%02x\nres_all_tg_pt=%d\n" "mapped_lun=%llu\n", reg_count, - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, pr_reg->pr_reg_nacl->initiatorname, isid_buf, pr_reg->pr_res_key, pr_reg->pr_res_type, pr_reg->pr_res_scope, pr_reg->pr_reg_all_tg_pt, @@ -1923,7 +1923,7 @@ static int core_scsi3_update_aptpl_buf( "initiator_fabric=%s\ninitiator_node=%s\n%s" "sa_res_key=%llu\nres_holder=0\n" "res_all_tg_pt=%d\nmapped_lun=%llu\n", - reg_count, tpg->se_tpg_tfo->get_fabric_name(), + reg_count, tpg->se_tpg_tfo->fabric_name, pr_reg->pr_reg_nacl->initiatorname, isid_buf, pr_reg->pr_res_key, pr_reg->pr_reg_all_tg_pt, pr_reg->pr_res_mapped_lun); @@ -1942,7 +1942,7 @@ static int core_scsi3_update_aptpl_buf( */ snprintf(tmp, 512, "target_fabric=%s\ntarget_node=%s\n" "tpgt=%hu\nport_rtpi=%hu\ntarget_lun=%llu\nPR_REG_END:" - " %d\n", tpg->se_tpg_tfo->get_fabric_name(), + " %d\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpg->se_tpg_tfo->tpg_get_tag(tpg), pr_reg->tg_pt_sep_rtpi, pr_reg->pr_aptpl_target_lun, @@ -2168,7 +2168,7 @@ core_scsi3_emulate_pro_register(struct se_cmd *cmd, u64 res_key, u64 sa_res_key, pr_reg->pr_res_key = sa_res_key; pr_debug("SPC-3 PR [%s] REGISTER%s: Changed Reservation" " Key for %s to: 0x%016Lx PRgeneration:" - " 0x%08x\n", cmd->se_tfo->get_fabric_name(), + " 0x%08x\n", cmd->se_tfo->fabric_name, (register_type == REGISTER_AND_IGNORE_EXISTING_KEY) ? "_AND_IGNORE_EXISTING_KEY" : "", pr_reg->pr_reg_nacl->initiatorname, pr_reg->pr_res_key, pr_reg->pr_res_generation); @@ -2356,9 +2356,9 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key) pr_err("SPC-3 PR: Attempted RESERVE from" " [%s]: %s while reservation already held by" " [%s]: %s, returning RESERVATION_CONFLICT\n", - cmd->se_tfo->get_fabric_name(), + cmd->se_tfo->fabric_name, se_sess->se_node_acl->initiatorname, - pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), + pr_res_nacl->se_tpg->se_tpg_tfo->fabric_name, pr_res_holder->pr_reg_nacl->initiatorname); spin_unlock(&dev->dev_reservation_lock); @@ -2379,9 +2379,9 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key) " [%s]: %s trying to change TYPE and/or SCOPE," " while reservation already held by [%s]: %s," " returning RESERVATION_CONFLICT\n", - cmd->se_tfo->get_fabric_name(), + cmd->se_tfo->fabric_name, se_sess->se_node_acl->initiatorname, - pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), + pr_res_nacl->se_tpg->se_tpg_tfo->fabric_name, pr_res_holder->pr_reg_nacl->initiatorname); spin_unlock(&dev->dev_reservation_lock); @@ -2414,10 +2414,10 @@ core_scsi3_pro_reserve(struct se_cmd *cmd, int type, int scope, u64 res_key) pr_debug("SPC-3 PR [%s] Service Action: RESERVE created new" " reservation holder TYPE: %s ALL_TG_PT: %d\n", - cmd->se_tfo->get_fabric_name(), core_scsi3_pr_dump_type(type), + cmd->se_tfo->fabric_name, core_scsi3_pr_dump_type(type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); pr_debug("SPC-3 PR [%s] RESERVE Node: %s%s\n", - cmd->se_tfo->get_fabric_name(), + cmd->se_tfo->fabric_name, se_sess->se_node_acl->initiatorname, i_buf); spin_unlock(&dev->dev_reservation_lock); @@ -2506,12 +2506,12 @@ out: if (!dev->dev_pr_res_holder) { pr_debug("SPC-3 PR [%s] Service Action: %s RELEASE cleared" " reservation holder TYPE: %s ALL_TG_PT: %d\n", - tfo->get_fabric_name(), (explicit) ? "explicit" : + tfo->fabric_name, (explicit) ? "explicit" : "implicit", core_scsi3_pr_dump_type(pr_res_type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); } pr_debug("SPC-3 PR [%s] RELEASE Node: %s%s\n", - tfo->get_fabric_name(), se_nacl->initiatorname, + tfo->fabric_name, se_nacl->initiatorname, i_buf); /* * Clear TYPE and SCOPE for the next PROUT Service Action: RESERVE @@ -2609,9 +2609,9 @@ core_scsi3_emulate_pro_release(struct se_cmd *cmd, int type, int scope, " reservation from [%s]: %s with different TYPE " "and/or SCOPE while reservation already held by" " [%s]: %s, returning RESERVATION_CONFLICT\n", - cmd->se_tfo->get_fabric_name(), + cmd->se_tfo->fabric_name, se_sess->se_node_acl->initiatorname, - pr_res_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), + pr_res_nacl->se_tpg->se_tpg_tfo->fabric_name, pr_res_holder->pr_reg_nacl->initiatorname); spin_unlock(&dev->dev_reservation_lock); @@ -2752,7 +2752,7 @@ core_scsi3_emulate_pro_clear(struct se_cmd *cmd, u64 res_key) spin_unlock(&pr_tmpl->registration_lock); pr_debug("SPC-3 PR [%s] Service Action: CLEAR complete\n", - cmd->se_tfo->get_fabric_name()); + cmd->se_tfo->fabric_name); core_scsi3_update_and_write_aptpl(cmd->se_dev, false); @@ -2791,11 +2791,11 @@ static void __core_scsi3_complete_pro_preempt( pr_debug("SPC-3 PR [%s] Service Action: PREEMPT%s created new" " reservation holder TYPE: %s ALL_TG_PT: %d\n", - tfo->get_fabric_name(), (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", + tfo->fabric_name, (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", core_scsi3_pr_dump_type(type), (pr_reg->pr_reg_all_tg_pt) ? 1 : 0); pr_debug("SPC-3 PR [%s] PREEMPT%s from Node: %s%s\n", - tfo->get_fabric_name(), (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", + tfo->fabric_name, (preempt_type == PREEMPT_AND_ABORT) ? "_AND_ABORT" : "", nacl->initiatorname, i_buf); /* * For PREEMPT_AND_ABORT, add the preempting reservation's @@ -3282,7 +3282,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, " proto_ident: 0x%02x does not match ident: 0x%02x" " from fabric: %s\n", proto_ident, dest_se_tpg->proto_id, - dest_tf_ops->get_fabric_name()); + dest_tf_ops->fabric_name); ret = TCM_INVALID_PARAMETER_LIST; goto out; } @@ -3299,7 +3299,7 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, buf = NULL; pr_debug("SPC-3 PR [%s] Extracted initiator %s identifier: %s" - " %s\n", dest_tf_ops->get_fabric_name(), (iport_ptr != NULL) ? + " %s\n", dest_tf_ops->fabric_name, (iport_ptr != NULL) ? "port" : "device", initiator_str, (iport_ptr != NULL) ? iport_ptr : ""); /* @@ -3344,7 +3344,7 @@ after_iport_check: if (!dest_node_acl) { pr_err("Unable to locate %s dest_node_acl for" - " TransportID%s\n", dest_tf_ops->get_fabric_name(), + " TransportID%s\n", dest_tf_ops->fabric_name, initiator_str); ret = TCM_INVALID_PARAMETER_LIST; goto out; @@ -3360,7 +3360,7 @@ after_iport_check: } pr_debug("SPC-3 PR REGISTER_AND_MOVE: Found %s dest_node_acl:" - " %s from TransportID\n", dest_tf_ops->get_fabric_name(), + " %s from TransportID\n", dest_tf_ops->fabric_name, dest_node_acl->initiatorname); /* @@ -3370,7 +3370,7 @@ after_iport_check: dest_se_deve = core_get_se_deve_from_rtpi(dest_node_acl, rtpi); if (!dest_se_deve) { pr_err("Unable to locate %s dest_se_deve from RTPI:" - " %hu\n", dest_tf_ops->get_fabric_name(), rtpi); + " %hu\n", dest_tf_ops->fabric_name, rtpi); ret = TCM_INVALID_PARAMETER_LIST; goto out; } @@ -3385,7 +3385,7 @@ after_iport_check: pr_debug("SPC-3 PR REGISTER_AND_MOVE: Located %s node %s LUN" " ACL for dest_se_deve->mapped_lun: %llu\n", - dest_tf_ops->get_fabric_name(), dest_node_acl->initiatorname, + dest_tf_ops->fabric_name, dest_node_acl->initiatorname, dest_se_deve->mapped_lun); /* @@ -3501,13 +3501,13 @@ after_iport_check: pr_debug("SPC-3 PR [%s] Service Action: REGISTER_AND_MOVE" " created new reservation holder TYPE: %s on object RTPI:" - " %hu PRGeneration: 0x%08x\n", dest_tf_ops->get_fabric_name(), + " %hu PRGeneration: 0x%08x\n", dest_tf_ops->fabric_name, core_scsi3_pr_dump_type(type), rtpi, dest_pr_reg->pr_res_generation); pr_debug("SPC-3 PR Successfully moved reservation from" " %s Fabric Node: %s%s -> %s Fabric Node: %s %s\n", - tf_ops->get_fabric_name(), pr_reg_nacl->initiatorname, - i_buf, dest_tf_ops->get_fabric_name(), + tf_ops->fabric_name, pr_reg_nacl->initiatorname, + i_buf, dest_tf_ops->fabric_name, dest_node_acl->initiatorname, (iport_ptr != NULL) ? iport_ptr : ""); /* @@ -4095,6 +4095,8 @@ target_check_reservation(struct se_cmd *cmd) return 0; if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) return 0; + if (!dev->dev_attrib.emulate_pr) + return 0; if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) return 0; diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index c062d363dce3..b5388a106567 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -179,20 +179,20 @@ out_free: static void pscsi_set_inquiry_info(struct scsi_device *sdev, struct t10_wwn *wwn) { - unsigned char *buf; - if (sdev->inquiry_len < INQUIRY_LEN) return; - - buf = sdev->inquiry; - if (!buf) - return; /* - * Use sdev->inquiry from drivers/scsi/scsi_scan.c:scsi_alloc_sdev() + * Use sdev->inquiry data from drivers/scsi/scsi_scan.c:scsi_add_lun() */ - memcpy(&wwn->vendor[0], &buf[8], sizeof(wwn->vendor)); - memcpy(&wwn->model[0], &buf[16], sizeof(wwn->model)); - memcpy(&wwn->revision[0], &buf[32], sizeof(wwn->revision)); + BUILD_BUG_ON(sizeof(wwn->vendor) != INQUIRY_VENDOR_LEN + 1); + snprintf(wwn->vendor, sizeof(wwn->vendor), + "%." __stringify(INQUIRY_VENDOR_LEN) "s", sdev->vendor); + BUILD_BUG_ON(sizeof(wwn->model) != INQUIRY_MODEL_LEN + 1); + snprintf(wwn->model, sizeof(wwn->model), + "%." __stringify(INQUIRY_MODEL_LEN) "s", sdev->model); + BUILD_BUG_ON(sizeof(wwn->revision) != INQUIRY_REVISION_LEN + 1); + snprintf(wwn->revision, sizeof(wwn->revision), + "%." __stringify(INQUIRY_REVISION_LEN) "s", sdev->rev); } static int @@ -811,7 +811,6 @@ static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b) struct scsi_device *sd = pdv->pdv_sd; unsigned char host_id[16]; ssize_t bl; - int i; if (phv->phv_mode == PHV_VIRTUAL_HOST_ID) snprintf(host_id, 16, "%d", pdv->pdv_host_id); @@ -824,29 +823,12 @@ static ssize_t pscsi_show_configfs_dev_params(struct se_device *dev, char *b) host_id); if (sd) { - bl += sprintf(b + bl, " "); - bl += sprintf(b + bl, "Vendor: "); - for (i = 0; i < 8; i++) { - if (ISPRINT(sd->vendor[i])) /* printable character? */ - bl += sprintf(b + bl, "%c", sd->vendor[i]); - else - bl += sprintf(b + bl, " "); - } - bl += sprintf(b + bl, " Model: "); - for (i = 0; i < 16; i++) { - if (ISPRINT(sd->model[i])) /* printable character ? */ - bl += sprintf(b + bl, "%c", sd->model[i]); - else - bl += sprintf(b + bl, " "); - } - bl += sprintf(b + bl, " Rev: "); - for (i = 0; i < 4; i++) { - if (ISPRINT(sd->rev[i])) /* printable character ? */ - bl += sprintf(b + bl, "%c", sd->rev[i]); - else - bl += sprintf(b + bl, " "); - } - bl += sprintf(b + bl, "\n"); + bl += sprintf(b + bl, " Vendor: %." + __stringify(INQUIRY_VENDOR_LEN) "s", sd->vendor); + bl += sprintf(b + bl, " Model: %." + __stringify(INQUIRY_MODEL_LEN) "s", sd->model); + bl += sprintf(b + bl, " Rev: %." + __stringify(INQUIRY_REVISION_LEN) "s\n", sd->rev); } return bl; } diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index f459118bc11b..47094ae01c04 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -108,12 +108,19 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) buf[7] = 0x2; /* CmdQue=1 */ - memcpy(&buf[8], "LIO-ORG ", 8); - memset(&buf[16], 0x20, 16); + /* + * ASCII data fields described as being left-aligned shall have any + * unused bytes at the end of the field (i.e., highest offset) and the + * unused bytes shall be filled with ASCII space characters (20h). + */ + memset(&buf[8], 0x20, + INQUIRY_VENDOR_LEN + INQUIRY_MODEL_LEN + INQUIRY_REVISION_LEN); + memcpy(&buf[8], dev->t10_wwn.vendor, + strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); memcpy(&buf[16], dev->t10_wwn.model, - min_t(size_t, strlen(dev->t10_wwn.model), 16)); + strnlen(dev->t10_wwn.model, INQUIRY_MODEL_LEN)); memcpy(&buf[32], dev->t10_wwn.revision, - min_t(size_t, strlen(dev->t10_wwn.revision), 4)); + strnlen(dev->t10_wwn.revision, INQUIRY_REVISION_LEN)); buf[4] = 31; /* Set additional length to 31 */ return 0; @@ -251,7 +258,10 @@ check_t10_vend_desc: buf[off] = 0x2; /* ASCII */ buf[off+1] = 0x1; /* T10 Vendor ID */ buf[off+2] = 0x0; - memcpy(&buf[off+4], "LIO-ORG", 8); + /* left align Vendor ID and pad with spaces */ + memset(&buf[off+4], 0x20, INQUIRY_VENDOR_LEN); + memcpy(&buf[off+4], dev->t10_wwn.vendor, + strnlen(dev->t10_wwn.vendor, INQUIRY_VENDOR_LEN)); /* Extra Byte for NULL Terminator */ id_len++; /* Identifier Length */ @@ -1281,6 +1291,14 @@ spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) struct se_device *dev = cmd->se_dev; unsigned char *cdb = cmd->t_task_cdb; + if (!dev->dev_attrib.emulate_pr && + ((cdb[0] == PERSISTENT_RESERVE_IN) || + (cdb[0] == PERSISTENT_RESERVE_OUT) || + (cdb[0] == RELEASE || cdb[0] == RELEASE_10) || + (cdb[0] == RESERVE || cdb[0] == RESERVE_10))) { + return TCM_UNSUPPORTED_SCSI_OPCODE; + } + switch (cdb[0]) { case MODE_SELECT: *size = cdb[4]; diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c index f0db91ebd735..8d9ceedfd455 100644 --- a/drivers/target/target_core_stat.c +++ b/drivers/target/target_core_stat.c @@ -246,43 +246,25 @@ static ssize_t target_stat_lu_lu_name_show(struct config_item *item, char *page) static ssize_t target_stat_lu_vend_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); - int i; - char str[sizeof(dev->t10_wwn.vendor)+1]; - /* scsiLuVendorId */ - for (i = 0; i < sizeof(dev->t10_wwn.vendor); i++) - str[i] = ISPRINT(dev->t10_wwn.vendor[i]) ? - dev->t10_wwn.vendor[i] : ' '; - str[i] = '\0'; - return snprintf(page, PAGE_SIZE, "%s\n", str); + return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_VENDOR_LEN) + "s\n", dev->t10_wwn.vendor); } static ssize_t target_stat_lu_prod_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); - int i; - char str[sizeof(dev->t10_wwn.model)+1]; - /* scsiLuProductId */ - for (i = 0; i < sizeof(dev->t10_wwn.model); i++) - str[i] = ISPRINT(dev->t10_wwn.model[i]) ? - dev->t10_wwn.model[i] : ' '; - str[i] = '\0'; - return snprintf(page, PAGE_SIZE, "%s\n", str); + return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_MODEL_LEN) + "s\n", dev->t10_wwn.model); } static ssize_t target_stat_lu_rev_show(struct config_item *item, char *page) { struct se_device *dev = to_stat_lu_dev(item); - int i; - char str[sizeof(dev->t10_wwn.revision)+1]; - /* scsiLuRevisionId */ - for (i = 0; i < sizeof(dev->t10_wwn.revision); i++) - str[i] = ISPRINT(dev->t10_wwn.revision[i]) ? - dev->t10_wwn.revision[i] : ' '; - str[i] = '\0'; - return snprintf(page, PAGE_SIZE, "%s\n", str); + return snprintf(page, PAGE_SIZE, "%-" __stringify(INQUIRY_REVISION_LEN) + "s\n", dev->t10_wwn.revision); } static ssize_t target_stat_lu_dev_type_show(struct config_item *item, char *page) @@ -612,7 +594,7 @@ static ssize_t target_stat_tgt_port_name_show(struct config_item *item, dev = rcu_dereference(lun->lun_se_dev); if (dev) ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n", - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, lun->lun_rtpi); rcu_read_unlock(); return ret; @@ -767,7 +749,7 @@ static ssize_t target_stat_transport_device_show(struct config_item *item, if (dev) { /* scsiTransportType */ ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n", - tpg->se_tpg_tfo->get_fabric_name()); + tpg->se_tpg_tfo->fabric_name); } rcu_read_unlock(); return ret; diff --git a/drivers/target/target_core_tmr.c b/drivers/target/target_core_tmr.c index 6d1179a7f043..ad0061e09d4c 100644 --- a/drivers/target/target_core_tmr.c +++ b/drivers/target/target_core_tmr.c @@ -163,18 +163,23 @@ void core_tmr_abort_task( continue; printk("ABORT_TASK: Found referenced %s task_tag: %llu\n", - se_cmd->se_tfo->get_fabric_name(), ref_tag); + se_cmd->se_tfo->fabric_name, ref_tag); - if (!__target_check_io_state(se_cmd, se_sess, 0)) + if (!__target_check_io_state(se_cmd, se_sess, + dev->dev_attrib.emulate_tas)) continue; spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); - cancel_work_sync(&se_cmd->work); - transport_wait_for_tasks(se_cmd); + /* + * Ensure that this ABORT request is visible to the LU RESET + * code. + */ + if (!tmr->tmr_dev) + WARN_ON_ONCE(transport_lookup_tmr_lun(tmr->task_cmd, + se_cmd->orig_fe_lun) < 0); - if (!transport_cmd_finish_abort(se_cmd)) - target_put_sess_cmd(se_cmd); + target_put_cmd_and_wait(se_cmd); printk("ABORT_TASK: Sending TMR_FUNCTION_COMPLETE for" " ref_tag: %llu\n", ref_tag); @@ -268,14 +273,28 @@ static void core_tmr_drain_tmr_list( (preempt_and_abort_list) ? "Preempt" : "", tmr_p, tmr_p->function, tmr_p->response, cmd->t_state); - cancel_work_sync(&cmd->work); - transport_wait_for_tasks(cmd); - - if (!transport_cmd_finish_abort(cmd)) - target_put_sess_cmd(cmd); + target_put_cmd_and_wait(cmd); } } +/** + * core_tmr_drain_state_list() - abort SCSI commands associated with a device + * + * @dev: Device for which to abort outstanding SCSI commands. + * @prout_cmd: Pointer to the SCSI PREEMPT AND ABORT if this function is called + * to realize the PREEMPT AND ABORT functionality. + * @tmr_sess: Session through which the LUN RESET has been received. + * @tas: Task Aborted Status (TAS) bit from the SCSI control mode page. + * A quote from SPC-4, paragraph "7.5.10 Control mode page": + * "A task aborted status (TAS) bit set to zero specifies that + * aborted commands shall be terminated by the device server + * without any response to the application client. A TAS bit set + * to one specifies that commands aborted by the actions of an I_T + * nexus other than the I_T nexus on which the command was + * received shall be completed with TASK ABORTED status." + * @preempt_and_abort_list: For the PREEMPT AND ABORT functionality, a list + * with registrations that will be preempted. + */ static void core_tmr_drain_state_list( struct se_device *dev, struct se_cmd *prout_cmd, @@ -350,18 +369,7 @@ static void core_tmr_drain_state_list( cmd->tag, (preempt_and_abort_list) ? "preempt" : "", cmd->pr_res_key); - /* - * If the command may be queued onto a workqueue cancel it now. - * - * This is equivalent to removal from the execute queue in the - * loop above, but we do it down here given that - * cancel_work_sync may block. - */ - cancel_work_sync(&cmd->work); - transport_wait_for_tasks(cmd); - - if (!transport_cmd_finish_abort(cmd)) - target_put_sess_cmd(cmd); + target_put_cmd_and_wait(cmd); } } @@ -398,7 +406,7 @@ int core_tmr_lun_reset( if (tmr_nacl && tmr_tpg) { pr_debug("LUN_RESET: TMR caller fabric: %s" " initiator port %s\n", - tmr_tpg->se_tpg_tfo->get_fabric_name(), + tmr_tpg->se_tpg_tfo->fabric_name, tmr_nacl->initiatorname); } } diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 02e8a5d86658..e2ace1059437 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -151,7 +151,7 @@ void core_tpg_add_node_to_devs( pr_debug("TARGET_CORE[%s]->TPG[%u]_LUN[%llu] - Adding %s" " access for LUN in Demo Mode\n", - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lun_access_ro ? "READ-ONLY" : "READ-WRITE"); @@ -176,7 +176,7 @@ target_set_nacl_queue_depth(struct se_portal_group *tpg, if (!acl->queue_depth) { pr_warn("Queue depth for %s Initiator Node: %s is 0," - "defaulting to 1.\n", tpg->se_tpg_tfo->get_fabric_name(), + "defaulting to 1.\n", tpg->se_tpg_tfo->fabric_name, acl->initiatorname); acl->queue_depth = 1; } @@ -227,11 +227,11 @@ static void target_add_node_acl(struct se_node_acl *acl) pr_debug("%s_TPG[%hu] - Added %s ACL with TCQ Depth: %d for %s" " Initiator Node: %s\n", - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->dynamic_node_acl ? "DYNAMIC" : "", acl->queue_depth, - tpg->se_tpg_tfo->get_fabric_name(), + tpg->se_tpg_tfo->fabric_name, acl->initiatorname); } @@ -313,7 +313,7 @@ struct se_node_acl *core_tpg_add_initiator_node_acl( if (acl->dynamic_node_acl) { acl->dynamic_node_acl = 0; pr_debug("%s_TPG[%u] - Replacing dynamic ACL" - " for %s\n", tpg->se_tpg_tfo->get_fabric_name(), + " for %s\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), initiatorname); mutex_unlock(&tpg->acl_node_mutex); return acl; @@ -321,7 +321,7 @@ struct se_node_acl *core_tpg_add_initiator_node_acl( pr_err("ACL entry for %s Initiator" " Node %s already exists for TPG %u, ignoring" - " request.\n", tpg->se_tpg_tfo->get_fabric_name(), + " request.\n", tpg->se_tpg_tfo->fabric_name, initiatorname, tpg->se_tpg_tfo->tpg_get_tag(tpg)); mutex_unlock(&tpg->acl_node_mutex); return ERR_PTR(-EEXIST); @@ -380,9 +380,9 @@ void core_tpg_del_initiator_node_acl(struct se_node_acl *acl) core_free_device_list_for_node(acl, tpg); pr_debug("%s_TPG[%hu] - Deleted ACL with TCQ Depth: %d for %s" - " Initiator Node: %s\n", tpg->se_tpg_tfo->get_fabric_name(), + " Initiator Node: %s\n", tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg), acl->queue_depth, - tpg->se_tpg_tfo->get_fabric_name(), acl->initiatorname); + tpg->se_tpg_tfo->fabric_name, acl->initiatorname); kfree(acl); } @@ -418,7 +418,7 @@ int core_tpg_set_initiator_node_queue_depth( pr_debug("Successfully changed queue depth to: %d for Initiator" " Node: %s on %s Target Portal Group: %u\n", acl->queue_depth, - acl->initiatorname, tpg->se_tpg_tfo->get_fabric_name(), + acl->initiatorname, tpg->se_tpg_tfo->fabric_name, tpg->se_tpg_tfo->tpg_get_tag(tpg)); return 0; @@ -512,7 +512,7 @@ int core_tpg_register( spin_unlock_bh(&tpg_lock); pr_debug("TARGET_CORE[%s]: Allocated portal_group for endpoint: %s, " - "Proto: %d, Portal Tag: %u\n", se_tpg->se_tpg_tfo->get_fabric_name(), + "Proto: %d, Portal Tag: %u\n", se_tpg->se_tpg_tfo->fabric_name, se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg) ? se_tpg->se_tpg_tfo->tpg_get_wwn(se_tpg) : NULL, se_tpg->proto_id, se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg)); @@ -528,7 +528,7 @@ int core_tpg_deregister(struct se_portal_group *se_tpg) LIST_HEAD(node_list); pr_debug("TARGET_CORE[%s]: Deallocating portal_group for endpoint: %s, " - "Proto: %d, Portal Tag: %u\n", tfo->get_fabric_name(), + "Proto: %d, Portal Tag: %u\n", tfo->fabric_name, tfo->tpg_get_wwn(se_tpg) ? tfo->tpg_get_wwn(se_tpg) : NULL, se_tpg->proto_id, tfo->tpg_get_tag(se_tpg)); @@ -577,7 +577,6 @@ struct se_lun *core_tpg_alloc_lun( } lun->unpacked_lun = unpacked_lun; atomic_set(&lun->lun_acl_count, 0); - init_completion(&lun->lun_ref_comp); init_completion(&lun->lun_shutdown_comp); INIT_LIST_HEAD(&lun->lun_deve_list); INIT_LIST_HEAD(&lun->lun_dev_link); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 2cfd61d62e97..ef9e75b359d4 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -224,19 +224,28 @@ void transport_subsystem_check_init(void) sub_api_initialized = 1; } +static void target_release_sess_cmd_refcnt(struct percpu_ref *ref) +{ + struct se_session *sess = container_of(ref, typeof(*sess), cmd_count); + + wake_up(&sess->cmd_list_wq); +} + /** * transport_init_session - initialize a session object * @se_sess: Session object pointer. * * The caller must have zero-initialized @se_sess before calling this function. */ -void transport_init_session(struct se_session *se_sess) +int transport_init_session(struct se_session *se_sess) { INIT_LIST_HEAD(&se_sess->sess_list); INIT_LIST_HEAD(&se_sess->sess_acl_list); INIT_LIST_HEAD(&se_sess->sess_cmd_list); spin_lock_init(&se_sess->sess_cmd_lock); init_waitqueue_head(&se_sess->cmd_list_wq); + return percpu_ref_init(&se_sess->cmd_count, + target_release_sess_cmd_refcnt, 0, GFP_KERNEL); } EXPORT_SYMBOL(transport_init_session); @@ -247,6 +256,7 @@ EXPORT_SYMBOL(transport_init_session); struct se_session *transport_alloc_session(enum target_prot_op sup_prot_ops) { struct se_session *se_sess; + int ret; se_sess = kmem_cache_zalloc(se_sess_cache, GFP_KERNEL); if (!se_sess) { @@ -254,7 +264,11 @@ struct se_session *transport_alloc_session(enum target_prot_op sup_prot_ops) " se_sess_cache\n"); return ERR_PTR(-ENOMEM); } - transport_init_session(se_sess); + ret = transport_init_session(se_sess); + if (ret < 0) { + kmem_cache_free(se_sess_cache, se_sess); + return ERR_PTR(ret); + } se_sess->sup_prot_ops = sup_prot_ops; return se_sess; @@ -273,14 +287,11 @@ int transport_alloc_session_tags(struct se_session *se_sess, { int rc; - se_sess->sess_cmd_map = kcalloc(tag_size, tag_num, - GFP_KERNEL | __GFP_NOWARN | __GFP_RETRY_MAYFAIL); + se_sess->sess_cmd_map = kvcalloc(tag_size, tag_num, + GFP_KERNEL | __GFP_RETRY_MAYFAIL); if (!se_sess->sess_cmd_map) { - se_sess->sess_cmd_map = vzalloc(array_size(tag_size, tag_num)); - if (!se_sess->sess_cmd_map) { - pr_err("Unable to allocate se_sess->sess_cmd_map\n"); - return -ENOMEM; - } + pr_err("Unable to allocate se_sess->sess_cmd_map\n"); + return -ENOMEM; } rc = sbitmap_queue_init_node(&se_sess->sess_tag_pool, tag_num, -1, @@ -397,7 +408,7 @@ void __transport_register_session( list_add_tail(&se_sess->sess_list, &se_tpg->tpg_sess_list); pr_debug("TARGET_CORE[%s]: Registered fabric_sess_ptr: %p\n", - se_tpg->se_tpg_tfo->get_fabric_name(), se_sess->fabric_sess_ptr); + se_tpg->se_tpg_tfo->fabric_name, se_sess->fabric_sess_ptr); } EXPORT_SYMBOL(__transport_register_session); @@ -581,6 +592,7 @@ void transport_free_session(struct se_session *se_sess) sbitmap_queue_free(&se_sess->sess_tag_pool); kvfree(se_sess->sess_cmd_map); } + percpu_ref_exit(&se_sess->cmd_count); kmem_cache_free(se_sess_cache, se_sess); } EXPORT_SYMBOL(transport_free_session); @@ -602,7 +614,7 @@ void transport_deregister_session(struct se_session *se_sess) spin_unlock_irqrestore(&se_tpg->session_lock, flags); pr_debug("TARGET_CORE[%s]: Deregistered fabric_sess\n", - se_tpg->se_tpg_tfo->get_fabric_name()); + se_tpg->se_tpg_tfo->fabric_name); /* * If last kref is dropping now for an explicit NodeACL, awake sleeping * ->acl_free_comp caller to wakeup configfs se_node_acl->acl_group @@ -695,32 +707,6 @@ static void transport_lun_remove_cmd(struct se_cmd *cmd) percpu_ref_put(&lun->lun_ref); } -int transport_cmd_finish_abort(struct se_cmd *cmd) -{ - bool send_tas = cmd->transport_state & CMD_T_TAS; - bool ack_kref = (cmd->se_cmd_flags & SCF_ACK_KREF); - int ret = 0; - - if (send_tas) - transport_send_task_abort(cmd); - - if (cmd->se_cmd_flags & SCF_SE_LUN_CMD) - transport_lun_remove_cmd(cmd); - /* - * Allow the fabric driver to unmap any resources before - * releasing the descriptor via TFO->release_cmd() - */ - if (!send_tas) - cmd->se_tfo->aborted_task(cmd); - - if (transport_cmd_check_stop_to_fabric(cmd)) - return 1; - if (!send_tas && ack_kref) - ret = target_put_sess_cmd(cmd); - - return ret; -} - static void target_complete_failure_work(struct work_struct *work) { struct se_cmd *cmd = container_of(work, struct se_cmd, work); @@ -770,12 +756,88 @@ void transport_copy_sense_to_cmd(struct se_cmd *cmd, unsigned char *sense) } EXPORT_SYMBOL(transport_copy_sense_to_cmd); +static void target_handle_abort(struct se_cmd *cmd) +{ + bool tas = cmd->transport_state & CMD_T_TAS; + bool ack_kref = cmd->se_cmd_flags & SCF_ACK_KREF; + int ret; + + pr_debug("tag %#llx: send_abort_response = %d\n", cmd->tag, tas); + + if (tas) { + if (!(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB)) { + cmd->scsi_status = SAM_STAT_TASK_ABORTED; + pr_debug("Setting SAM_STAT_TASK_ABORTED status for CDB: 0x%02x, ITT: 0x%08llx\n", + cmd->t_task_cdb[0], cmd->tag); + trace_target_cmd_complete(cmd); + ret = cmd->se_tfo->queue_status(cmd); + if (ret) { + transport_handle_queue_full(cmd, cmd->se_dev, + ret, false); + return; + } + } else { + cmd->se_tmr_req->response = TMR_FUNCTION_REJECTED; + cmd->se_tfo->queue_tm_rsp(cmd); + } + } else { + /* + * Allow the fabric driver to unmap any resources before + * releasing the descriptor via TFO->release_cmd(). + */ + cmd->se_tfo->aborted_task(cmd); + if (ack_kref) + WARN_ON_ONCE(target_put_sess_cmd(cmd) != 0); + /* + * To do: establish a unit attention condition on the I_T + * nexus associated with cmd. See also the paragraph "Aborting + * commands" in SAM. + */ + } + + WARN_ON_ONCE(kref_read(&cmd->cmd_kref) == 0); + + transport_lun_remove_cmd(cmd); + + transport_cmd_check_stop_to_fabric(cmd); +} + +static void target_abort_work(struct work_struct *work) +{ + struct se_cmd *cmd = container_of(work, struct se_cmd, work); + + target_handle_abort(cmd); +} + +static bool target_cmd_interrupted(struct se_cmd *cmd) +{ + int post_ret; + + if (cmd->transport_state & CMD_T_ABORTED) { + if (cmd->transport_complete_callback) + cmd->transport_complete_callback(cmd, false, &post_ret); + INIT_WORK(&cmd->work, target_abort_work); + queue_work(target_completion_wq, &cmd->work); + return true; + } else if (cmd->transport_state & CMD_T_STOP) { + if (cmd->transport_complete_callback) + cmd->transport_complete_callback(cmd, false, &post_ret); + complete_all(&cmd->t_transport_stop_comp); + return true; + } + + return false; +} + +/* May be called from interrupt context so must not sleep. */ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) { - struct se_device *dev = cmd->se_dev; int success; unsigned long flags; + if (target_cmd_interrupted(cmd)) + return; + cmd->scsi_status = scsi_status; spin_lock_irqsave(&cmd->t_state_lock, flags); @@ -791,34 +853,12 @@ void target_complete_cmd(struct se_cmd *cmd, u8 scsi_status) break; } - /* - * Check for case where an explicit ABORT_TASK has been received - * and transport_wait_for_tasks() will be waiting for completion.. - */ - if (cmd->transport_state & CMD_T_ABORTED || - cmd->transport_state & CMD_T_STOP) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - /* - * If COMPARE_AND_WRITE was stopped by __transport_wait_for_tasks(), - * release se_device->caw_sem obtained by sbc_compare_and_write() - * since target_complete_ok_work() or target_complete_failure_work() - * won't be called to invoke the normal CAW completion callbacks. - */ - if (cmd->se_cmd_flags & SCF_COMPARE_AND_WRITE) { - up(&dev->caw_sem); - } - complete_all(&cmd->t_transport_stop_comp); - return; - } else if (!success) { - INIT_WORK(&cmd->work, target_complete_failure_work); - } else { - INIT_WORK(&cmd->work, target_complete_ok_work); - } - cmd->t_state = TRANSPORT_COMPLETE; cmd->transport_state |= (CMD_T_COMPLETE | CMD_T_ACTIVE); spin_unlock_irqrestore(&cmd->t_state_lock, flags); + INIT_WORK(&cmd->work, success ? target_complete_ok_work : + target_complete_failure_work); if (cmd->se_cmd_flags & SCF_USE_CPUID) queue_work_on(cmd->cpuid, target_completion_wq, &cmd->work); else @@ -880,7 +920,7 @@ void target_qf_do_work(struct work_struct *work) atomic_dec_mb(&dev->dev_qf_count); pr_debug("Processing %s cmd: %p QUEUE_FULL in work queue" - " context: %s\n", cmd->se_tfo->get_fabric_name(), cmd, + " context: %s\n", cmd->se_tfo->fabric_name, cmd, (cmd->t_state == TRANSPORT_COMPLETE_QF_OK) ? "COMPLETE_OK" : (cmd->t_state == TRANSPORT_COMPLETE_QF_WP) ? "WRITE_PENDING" : "UNKNOWN"); @@ -1244,7 +1284,7 @@ target_cmd_size_check(struct se_cmd *cmd, unsigned int size) } else if (size != cmd->data_length) { pr_warn_ratelimited("TARGET_CORE[%s]: Expected Transfer Length:" " %u does not match SCSI CDB Length: %u for SAM Opcode:" - " 0x%02x\n", cmd->se_tfo->get_fabric_name(), + " 0x%02x\n", cmd->se_tfo->fabric_name, cmd->data_length, size, cmd->t_task_cdb[0]); if (cmd->data_direction == DMA_TO_DEVICE) { @@ -1316,7 +1356,8 @@ void transport_init_se_cmd( INIT_LIST_HEAD(&cmd->se_cmd_list); INIT_LIST_HEAD(&cmd->state_list); init_completion(&cmd->t_transport_stop_comp); - cmd->compl = NULL; + cmd->free_compl = NULL; + cmd->abrt_compl = NULL; spin_lock_init(&cmd->t_state_lock); INIT_WORK(&cmd->work, NULL); kref_init(&cmd->cmd_kref); @@ -1396,7 +1437,7 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb) ret = dev->transport->parse_cdb(cmd); if (ret == TCM_UNSUPPORTED_SCSI_OPCODE) pr_warn_ratelimited("%s/%s: Unsupported SCSI Opcode 0x%02x, sending CHECK_CONDITION.\n", - cmd->se_tfo->get_fabric_name(), + cmd->se_tfo->fabric_name, cmd->se_sess->se_node_acl->initiatorname, cmd->t_task_cdb[0]); if (ret) @@ -1792,8 +1833,11 @@ void transport_generic_request_failure(struct se_cmd *cmd, if (cmd->transport_complete_callback) cmd->transport_complete_callback(cmd, false, &post_ret); - if (transport_check_aborted_status(cmd, 1)) + if (cmd->transport_state & CMD_T_ABORTED) { + INIT_WORK(&cmd->work, target_abort_work); + queue_work(target_completion_wq, &cmd->work); return; + } switch (sense_reason) { case TCM_NON_EXISTENT_LUN: @@ -1999,8 +2043,6 @@ static bool target_handle_task_attr(struct se_cmd *cmd) return true; } -static int __transport_check_aborted_status(struct se_cmd *, int); - void target_execute_cmd(struct se_cmd *cmd) { /* @@ -2009,20 +2051,10 @@ void target_execute_cmd(struct se_cmd *cmd) * * If the received CDB has already been aborted stop processing it here. */ - spin_lock_irq(&cmd->t_state_lock); - if (__transport_check_aborted_status(cmd, 1)) { - spin_unlock_irq(&cmd->t_state_lock); - return; - } - if (cmd->transport_state & CMD_T_STOP) { - pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08llx\n", - __func__, __LINE__, cmd->tag); - - spin_unlock_irq(&cmd->t_state_lock); - complete_all(&cmd->t_transport_stop_comp); + if (target_cmd_interrupted(cmd)) return; - } + spin_lock_irq(&cmd->t_state_lock); cmd->t_state = TRANSPORT_PROCESSING; cmd->transport_state &= ~CMD_T_PRE_EXECUTE; cmd->transport_state |= CMD_T_ACTIVE | CMD_T_SENT; @@ -2571,7 +2603,8 @@ transport_generic_new_cmd(struct se_cmd *cmd) * Determine if frontend context caller is requesting the stopping of * this command for frontend exceptions. */ - if (cmd->transport_state & CMD_T_STOP) { + if (cmd->transport_state & CMD_T_STOP && + !cmd->se_tfo->write_pending_must_be_called) { pr_debug("%s:%d CMD_T_STOP for ITT: 0x%08llx\n", __func__, __LINE__, cmd->tag); @@ -2635,13 +2668,29 @@ static void target_wait_free_cmd(struct se_cmd *cmd, bool *aborted, bool *tas) } /* + * Call target_put_sess_cmd() and wait until target_release_cmd_kref(@cmd) has + * finished. + */ +void target_put_cmd_and_wait(struct se_cmd *cmd) +{ + DECLARE_COMPLETION_ONSTACK(compl); + + WARN_ON_ONCE(cmd->abrt_compl); + cmd->abrt_compl = &compl; + target_put_sess_cmd(cmd); + wait_for_completion(&compl); +} + +/* * This function is called by frontend drivers after processing of a command * has finished. * - * The protocol for ensuring that either the regular flow or the TMF - * code drops one reference is as follows: + * The protocol for ensuring that either the regular frontend command + * processing flow or target_handle_abort() code drops one reference is as + * follows: * - Calling .queue_data_in(), .queue_status() or queue_tm_rsp() will cause - * the frontend driver to drop one reference, synchronously or asynchronously. + * the frontend driver to call this function synchronously or asynchronously. + * That will cause one reference to be dropped. * - During regular command processing the target core sets CMD_T_COMPLETE * before invoking one of the .queue_*() functions. * - The code that aborts commands skips commands and TMFs for which @@ -2653,7 +2702,7 @@ static void target_wait_free_cmd(struct se_cmd *cmd, bool *aborted, bool *tas) * - For aborted commands for which CMD_T_TAS has been set .queue_status() will * be called and will drop a reference. * - For aborted commands for which CMD_T_TAS has not been set .aborted_task() - * will be called. transport_cmd_finish_abort() will drop the final reference. + * will be called. target_handle_abort() will drop the final reference. */ int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) { @@ -2677,9 +2726,8 @@ int transport_generic_free_cmd(struct se_cmd *cmd, int wait_for_tasks) transport_lun_remove_cmd(cmd); } if (aborted) - cmd->compl = &compl; - if (!aborted || tas) - ret = target_put_sess_cmd(cmd); + cmd->free_compl = &compl; + ret = target_put_sess_cmd(cmd); if (aborted) { pr_debug("Detected CMD_T_ABORTED for ITT: %llu\n", cmd->tag); wait_for_completion(&compl); @@ -2719,6 +2767,7 @@ int target_get_sess_cmd(struct se_cmd *se_cmd, bool ack_kref) } se_cmd->transport_state |= CMD_T_PRE_EXECUTE; list_add_tail(&se_cmd->se_cmd_list, &se_sess->sess_cmd_list); + percpu_ref_get(&se_sess->cmd_count); out: spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); @@ -2743,21 +2792,24 @@ static void target_release_cmd_kref(struct kref *kref) { struct se_cmd *se_cmd = container_of(kref, struct se_cmd, cmd_kref); struct se_session *se_sess = se_cmd->se_sess; - struct completion *compl = se_cmd->compl; + struct completion *free_compl = se_cmd->free_compl; + struct completion *abrt_compl = se_cmd->abrt_compl; unsigned long flags; if (se_sess) { spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); list_del_init(&se_cmd->se_cmd_list); - if (se_sess->sess_tearing_down && list_empty(&se_sess->sess_cmd_list)) - wake_up(&se_sess->cmd_list_wq); spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); } target_free_cmd_mem(se_cmd); se_cmd->se_tfo->release_cmd(se_cmd); - if (compl) - complete(compl); + if (free_compl) + complete(free_compl); + if (abrt_compl) + complete(abrt_compl); + + percpu_ref_put(&se_sess->cmd_count); } /** @@ -2886,6 +2938,8 @@ void target_sess_cmd_list_set_waiting(struct se_session *se_sess) spin_lock_irqsave(&se_sess->sess_cmd_lock, flags); se_sess->sess_tearing_down = 1; spin_unlock_irqrestore(&se_sess->sess_cmd_lock, flags); + + percpu_ref_kill(&se_sess->cmd_count); } EXPORT_SYMBOL(target_sess_cmd_list_set_waiting); @@ -2900,52 +2954,24 @@ void target_wait_for_sess_cmds(struct se_session *se_sess) WARN_ON_ONCE(!se_sess->sess_tearing_down); - spin_lock_irq(&se_sess->sess_cmd_lock); do { - ret = wait_event_lock_irq_timeout( - se_sess->cmd_list_wq, - list_empty(&se_sess->sess_cmd_list), - se_sess->sess_cmd_lock, 180 * HZ); + ret = wait_event_timeout(se_sess->cmd_list_wq, + percpu_ref_is_zero(&se_sess->cmd_count), + 180 * HZ); list_for_each_entry(cmd, &se_sess->sess_cmd_list, se_cmd_list) target_show_cmd("session shutdown: still waiting for ", cmd); } while (ret <= 0); - spin_unlock_irq(&se_sess->sess_cmd_lock); } EXPORT_SYMBOL(target_wait_for_sess_cmds); -static void target_lun_confirm(struct percpu_ref *ref) -{ - struct se_lun *lun = container_of(ref, struct se_lun, lun_ref); - - complete(&lun->lun_ref_comp); -} - +/* + * Prevent that new percpu_ref_tryget_live() calls succeed and wait until + * all references to the LUN have been released. Called during LUN shutdown. + */ void transport_clear_lun_ref(struct se_lun *lun) { - /* - * Mark the percpu-ref as DEAD, switch to atomic_t mode, drop - * the initial reference and schedule confirm kill to be - * executed after one full RCU grace period has completed. - */ - percpu_ref_kill_and_confirm(&lun->lun_ref, target_lun_confirm); - /* - * The first completion waits for percpu_ref_switch_to_atomic_rcu() - * to call target_lun_confirm after lun->lun_ref has been marked - * as __PERCPU_REF_DEAD on all CPUs, and switches to atomic_t - * mode so that percpu_ref_tryget_live() lookup of lun->lun_ref - * fails for all new incoming I/O. - */ - wait_for_completion(&lun->lun_ref_comp); - /* - * The second completion waits for percpu_ref_put_many() to - * invoke ->release() after lun->lun_ref has switched to - * atomic_t mode, and lun->lun_ref.count has reached zero. - * - * At this point all target-core lun->lun_ref references have - * been dropped via transport_lun_remove_cmd(), and it's safe - * to proceed with the remaining LUN shutdown. - */ + percpu_ref_kill(&lun->lun_ref); wait_for_completion(&lun->lun_shutdown_comp); } @@ -3229,6 +3255,8 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd, { unsigned long flags; + WARN_ON_ONCE(cmd->se_cmd_flags & SCF_SCSI_TMR_CDB); + spin_lock_irqsave(&cmd->t_state_lock, flags); if (cmd->se_cmd_flags & SCF_SENT_CHECK_CONDITION) { spin_unlock_irqrestore(&cmd->t_state_lock, flags); @@ -3245,114 +3273,15 @@ transport_send_check_condition_and_sense(struct se_cmd *cmd, } EXPORT_SYMBOL(transport_send_check_condition_and_sense); -static int __transport_check_aborted_status(struct se_cmd *cmd, int send_status) - __releases(&cmd->t_state_lock) - __acquires(&cmd->t_state_lock) -{ - int ret; - - assert_spin_locked(&cmd->t_state_lock); - WARN_ON_ONCE(!irqs_disabled()); - - if (!(cmd->transport_state & CMD_T_ABORTED)) - return 0; - /* - * If cmd has been aborted but either no status is to be sent or it has - * already been sent, just return - */ - if (!send_status || !(cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS)) { - if (send_status) - cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS; - return 1; - } - - pr_debug("Sending delayed SAM_STAT_TASK_ABORTED status for CDB:" - " 0x%02x ITT: 0x%08llx\n", cmd->t_task_cdb[0], cmd->tag); - - cmd->se_cmd_flags &= ~SCF_SEND_DELAYED_TAS; - cmd->scsi_status = SAM_STAT_TASK_ABORTED; - trace_target_cmd_complete(cmd); - - spin_unlock_irq(&cmd->t_state_lock); - ret = cmd->se_tfo->queue_status(cmd); - if (ret) - transport_handle_queue_full(cmd, cmd->se_dev, ret, false); - spin_lock_irq(&cmd->t_state_lock); - - return 1; -} - -int transport_check_aborted_status(struct se_cmd *cmd, int send_status) -{ - int ret; - - spin_lock_irq(&cmd->t_state_lock); - ret = __transport_check_aborted_status(cmd, send_status); - spin_unlock_irq(&cmd->t_state_lock); - - return ret; -} -EXPORT_SYMBOL(transport_check_aborted_status); - -void transport_send_task_abort(struct se_cmd *cmd) -{ - unsigned long flags; - int ret; - - spin_lock_irqsave(&cmd->t_state_lock, flags); - if (cmd->se_cmd_flags & (SCF_SENT_CHECK_CONDITION)) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - return; - } - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - - /* - * If there are still expected incoming fabric WRITEs, we wait - * until until they have completed before sending a TASK_ABORTED - * response. This response with TASK_ABORTED status will be - * queued back to fabric module by transport_check_aborted_status(). - */ - if (cmd->data_direction == DMA_TO_DEVICE) { - if (cmd->se_tfo->write_pending_status(cmd) != 0) { - spin_lock_irqsave(&cmd->t_state_lock, flags); - if (cmd->se_cmd_flags & SCF_SEND_DELAYED_TAS) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - goto send_abort; - } - cmd->se_cmd_flags |= SCF_SEND_DELAYED_TAS; - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - return; - } - } -send_abort: - cmd->scsi_status = SAM_STAT_TASK_ABORTED; - - transport_lun_remove_cmd(cmd); - - pr_debug("Setting SAM_STAT_TASK_ABORTED status for CDB: 0x%02x, ITT: 0x%08llx\n", - cmd->t_task_cdb[0], cmd->tag); - - trace_target_cmd_complete(cmd); - ret = cmd->se_tfo->queue_status(cmd); - if (ret) - transport_handle_queue_full(cmd, cmd->se_dev, ret, false); -} - static void target_tmr_work(struct work_struct *work) { struct se_cmd *cmd = container_of(work, struct se_cmd, work); struct se_device *dev = cmd->se_dev; struct se_tmr_req *tmr = cmd->se_tmr_req; - unsigned long flags; int ret; - spin_lock_irqsave(&cmd->t_state_lock, flags); - if (cmd->transport_state & CMD_T_ABORTED) { - tmr->response = TMR_FUNCTION_REJECTED; - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - goto check_stop; - } - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + if (cmd->transport_state & CMD_T_ABORTED) + goto aborted; switch (tmr->function) { case TMR_ABORT_TASK: @@ -3386,18 +3315,16 @@ static void target_tmr_work(struct work_struct *work) break; } - spin_lock_irqsave(&cmd->t_state_lock, flags); - if (cmd->transport_state & CMD_T_ABORTED) { - spin_unlock_irqrestore(&cmd->t_state_lock, flags); - goto check_stop; - } - spin_unlock_irqrestore(&cmd->t_state_lock, flags); + if (cmd->transport_state & CMD_T_ABORTED) + goto aborted; cmd->se_tfo->queue_tm_rsp(cmd); -check_stop: - transport_lun_remove_cmd(cmd); transport_cmd_check_stop_to_fabric(cmd); + return; + +aborted: + target_handle_abort(cmd); } int transport_generic_handle_tmr( @@ -3416,16 +3343,15 @@ int transport_generic_handle_tmr( spin_unlock_irqrestore(&cmd->t_state_lock, flags); if (aborted) { - pr_warn_ratelimited("handle_tmr caught CMD_T_ABORTED TMR %d" - "ref_tag: %llu tag: %llu\n", cmd->se_tmr_req->function, - cmd->se_tmr_req->ref_task_tag, cmd->tag); - transport_lun_remove_cmd(cmd); - transport_cmd_check_stop_to_fabric(cmd); + pr_warn_ratelimited("handle_tmr caught CMD_T_ABORTED TMR %d ref_tag: %llu tag: %llu\n", + cmd->se_tmr_req->function, + cmd->se_tmr_req->ref_task_tag, cmd->tag); + target_handle_abort(cmd); return 0; } INIT_WORK(&cmd->work, target_tmr_work); - queue_work(cmd->se_dev->tmr_wq, &cmd->work); + schedule_work(&cmd->work); return 0; } EXPORT_SYMBOL(transport_generic_handle_tmr); diff --git a/drivers/target/target_core_ua.c b/drivers/target/target_core_ua.c index c8ac242ce888..ced1c10364eb 100644 --- a/drivers/target/target_core_ua.c +++ b/drivers/target/target_core_ua.c @@ -266,7 +266,7 @@ bool core_scsi3_ua_for_check_condition(struct se_cmd *cmd, u8 *key, u8 *asc, pr_debug("[%s]: %s UNIT ATTENTION condition with" " INTLCK_CTRL: %d, mapped LUN: %llu, got CDB: 0x%02x" " reported ASC: 0x%02x, ASCQ: 0x%02x\n", - nacl->se_tpg->se_tpg_tfo->get_fabric_name(), + nacl->se_tpg->se_tpg_tfo->fabric_name, (dev->dev_attrib.emulate_ua_intlck_ctrl != 0) ? "Reporting" : "Releasing", dev->dev_attrib.emulate_ua_intlck_ctrl, cmd->orig_fe_lun, cmd->t_task_cdb[0], *asc, *ascq); @@ -327,7 +327,7 @@ int core_scsi3_ua_clear_for_request_sense( pr_debug("[%s]: Released UNIT ATTENTION condition, mapped" " LUN: %llu, got REQUEST_SENSE reported ASC: 0x%02x," - " ASCQ: 0x%02x\n", nacl->se_tpg->se_tpg_tfo->get_fabric_name(), + " ASCQ: 0x%02x\n", nacl->se_tpg->se_tpg_tfo->fabric_name, cmd->orig_fe_lun, *asc, *ascq); return (head) ? -EPERM : 0; diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c index 9cd404acdb82..1e6d24943565 100644 --- a/drivers/target/target_core_user.c +++ b/drivers/target/target_core_user.c @@ -958,7 +958,7 @@ static int add_to_cmdr_queue(struct tcmu_cmd *tcmu_cmd) * 0 success * 1 internally queued to wait for ring memory to free. */ -static sense_reason_t queue_cmd_ring(struct tcmu_cmd *tcmu_cmd, int *scsi_err) +static int queue_cmd_ring(struct tcmu_cmd *tcmu_cmd, sense_reason_t *scsi_err) { struct tcmu_dev *udev = tcmu_cmd->tcmu_dev; struct se_cmd *se_cmd = tcmu_cmd->se_cmd; diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c index 70adcfdca8d1..c2e1fc927fdf 100644 --- a/drivers/target/target_core_xcopy.c +++ b/drivers/target/target_core_xcopy.c @@ -399,11 +399,6 @@ struct se_portal_group xcopy_pt_tpg; static struct se_session xcopy_pt_sess; static struct se_node_acl xcopy_pt_nacl; -static char *xcopy_pt_get_fabric_name(void) -{ - return "xcopy-pt"; -} - static int xcopy_pt_get_cmd_state(struct se_cmd *se_cmd) { return 0; @@ -463,7 +458,7 @@ static int xcopy_pt_queue_status(struct se_cmd *se_cmd) } static const struct target_core_fabric_ops xcopy_pt_tfo = { - .get_fabric_name = xcopy_pt_get_fabric_name, + .fabric_name = "xcopy-pt", .get_cmd_state = xcopy_pt_get_cmd_state, .release_cmd = xcopy_pt_release_cmd, .check_stop_free = xcopy_pt_check_stop_free, @@ -479,6 +474,8 @@ static const struct target_core_fabric_ops xcopy_pt_tfo = { int target_xcopy_setup_pt(void) { + int ret; + xcopy_wq = alloc_workqueue("xcopy_wq", WQ_MEM_RECLAIM, 0); if (!xcopy_wq) { pr_err("Unable to allocate xcopy_wq\n"); @@ -496,7 +493,9 @@ int target_xcopy_setup_pt(void) INIT_LIST_HEAD(&xcopy_pt_nacl.acl_list); INIT_LIST_HEAD(&xcopy_pt_nacl.acl_sess_list); memset(&xcopy_pt_sess, 0, sizeof(struct se_session)); - transport_init_session(&xcopy_pt_sess); + ret = transport_init_session(&xcopy_pt_sess); + if (ret < 0) + return ret; xcopy_pt_nacl.se_tpg = &xcopy_pt_tpg; xcopy_pt_nacl.nacl_sess = &xcopy_pt_sess; diff --git a/drivers/target/tcm_fc/tfc_conf.c b/drivers/target/tcm_fc/tfc_conf.c index e55c4d537592..1ce49518d440 100644 --- a/drivers/target/tcm_fc/tfc_conf.c +++ b/drivers/target/tcm_fc/tfc_conf.c @@ -392,11 +392,6 @@ static inline struct ft_tpg *ft_tpg(struct se_portal_group *se_tpg) return container_of(se_tpg, struct ft_tpg, se_tpg); } -static char *ft_get_fabric_name(void) -{ - return "fc"; -} - static char *ft_get_fabric_wwn(struct se_portal_group *se_tpg) { return ft_tpg(se_tpg)->lport_wwn->name; @@ -427,9 +422,8 @@ static u32 ft_tpg_get_inst_index(struct se_portal_group *se_tpg) static const struct target_core_fabric_ops ft_fabric_ops = { .module = THIS_MODULE, - .name = "fc", + .fabric_name = "fc", .node_acl_size = sizeof(struct ft_node_acl), - .get_fabric_name = ft_get_fabric_name, .tpg_get_wwn = ft_get_fabric_wwn, .tpg_get_tag = ft_get_tag, .tpg_check_demo_mode = ft_check_false, |