diff options
| -rw-r--r-- | drivers/target/target_core_alua.c | 394 | ||||
| -rw-r--r-- | drivers/target/target_core_alua.h | 14 | ||||
| -rw-r--r-- | drivers/target/target_core_configfs.c | 11 | ||||
| -rw-r--r-- | drivers/target/target_core_device.c | 179 | ||||
| -rw-r--r-- | drivers/target/target_core_fabric_configfs.c | 32 | ||||
| -rw-r--r-- | drivers/target/target_core_internal.h | 12 | ||||
| -rw-r--r-- | drivers/target/target_core_pr.c | 56 | ||||
| -rw-r--r-- | drivers/target/target_core_spc.c | 48 | ||||
| -rw-r--r-- | drivers/target/target_core_stat.c | 299 | ||||
| -rw-r--r-- | drivers/target/target_core_tpg.c | 95 | ||||
| -rw-r--r-- | drivers/target/target_core_transport.c | 34 | ||||
| -rw-r--r-- | drivers/target/target_core_xcopy.c | 17 | ||||
| -rw-r--r-- | include/target/target_core_base.h | 74 |
13 files changed, 458 insertions, 807 deletions
diff --git a/drivers/target/target_core_alua.c b/drivers/target/target_core_alua.c index 53cdfabac861..1109c2833fe6 100644 --- a/drivers/target/target_core_alua.c +++ b/drivers/target/target_core_alua.c @@ -43,11 +43,13 @@ static sense_reason_t core_alua_check_transition(int state, int valid, int *primary); static int core_alua_set_tg_pt_secondary_state( - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, - struct se_port *port, int explicit, int offline); + struct se_lun *lun, int explicit, int offline); static char *core_alua_dump_state(int state); +static void __target_attach_tg_pt_gp(struct se_lun *lun, + struct t10_alua_tg_pt_gp *tg_pt_gp); + static u16 alua_lu_gps_counter; static u32 alua_lu_gps_count; @@ -145,9 +147,8 @@ sense_reason_t target_emulate_report_target_port_groups(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; - struct se_port *port; struct t10_alua_tg_pt_gp *tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; + struct se_lun *lun; unsigned char *buf; u32 rd_len = 0, off; int ext_hdr = (cmd->t_task_cdb[1] & 0x20); @@ -222,9 +223,8 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd) rd_len += 8; spin_lock(&tg_pt_gp->tg_pt_gp_lock); - list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, - tg_pt_gp_mem_list) { - port = tg_pt_gp_mem->tg_pt; + list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, + lun_tg_pt_gp_link) { /* * Start Target Port descriptor format * @@ -234,8 +234,8 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd) /* * Set RELATIVE TARGET PORT IDENTIFIER */ - buf[off++] = ((port->sep_rtpi >> 8) & 0xff); - buf[off++] = (port->sep_rtpi & 0xff); + buf[off++] = ((lun->lun_rtpi >> 8) & 0xff); + buf[off++] = (lun->lun_rtpi & 0xff); rd_len += 4; } spin_unlock(&tg_pt_gp->tg_pt_gp_lock); @@ -259,15 +259,11 @@ target_emulate_report_target_port_groups(struct se_cmd *cmd) * this CDB was received upon to determine this value individually * for ALUA target port group. */ - port = cmd->se_lun->lun_sep; - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (tg_pt_gp_mem) { - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; - if (tg_pt_gp) - buf[5] = tg_pt_gp->tg_pt_gp_implicit_trans_secs; - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - } + spin_lock(&cmd->se_lun->lun_tg_pt_gp_lock); + tg_pt_gp = cmd->se_lun->lun_tg_pt_gp; + if (tg_pt_gp) + buf[5] = tg_pt_gp->tg_pt_gp_implicit_trans_secs; + spin_unlock(&cmd->se_lun->lun_tg_pt_gp_lock); } transport_kunmap_data_sg(cmd); @@ -284,10 +280,9 @@ sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; - struct se_port *port, *l_port = cmd->se_lun->lun_sep; + struct se_lun *l_lun = cmd->se_lun; struct se_node_acl *nacl = cmd->se_sess->se_node_acl; struct t10_alua_tg_pt_gp *tg_pt_gp = NULL, *l_tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, *l_tg_pt_gp_mem; unsigned char *buf; unsigned char *ptr; sense_reason_t rc = TCM_NO_SENSE; @@ -295,9 +290,6 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) int alua_access_state, primary = 0, valid_states; u16 tg_pt_id, rtpi; - if (!l_port) - return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; - if (cmd->data_length < 4) { pr_warn("SET TARGET PORT GROUPS parameter list length %u too" " small\n", cmd->data_length); @@ -312,29 +304,24 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) * Determine if explicit ALUA via SET_TARGET_PORT_GROUPS is allowed * for the local tg_pt_gp. */ - l_tg_pt_gp_mem = l_port->sep_alua_tg_pt_gp_mem; - if (!l_tg_pt_gp_mem) { - pr_err("Unable to access l_port->sep_alua_tg_pt_gp_mem\n"); - rc = TCM_UNSUPPORTED_SCSI_OPCODE; - goto out; - } - spin_lock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock); - l_tg_pt_gp = l_tg_pt_gp_mem->tg_pt_gp; + spin_lock(&l_lun->lun_tg_pt_gp_lock); + l_tg_pt_gp = l_lun->lun_tg_pt_gp; if (!l_tg_pt_gp) { - spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock); - pr_err("Unable to access *l_tg_pt_gp_mem->tg_pt_gp\n"); + spin_unlock(&l_lun->lun_tg_pt_gp_lock); + pr_err("Unable to access l_lun->tg_pt_gp\n"); rc = TCM_UNSUPPORTED_SCSI_OPCODE; goto out; } - spin_unlock(&l_tg_pt_gp_mem->tg_pt_gp_mem_lock); if (!(l_tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA)) { + spin_unlock(&l_lun->lun_tg_pt_gp_lock); pr_debug("Unable to process SET_TARGET_PORT_GROUPS" " while TPGS_EXPLICIT_ALUA is disabled\n"); rc = TCM_UNSUPPORTED_SCSI_OPCODE; goto out; } valid_states = l_tg_pt_gp->tg_pt_gp_alua_supported_states; + spin_unlock(&l_lun->lun_tg_pt_gp_lock); ptr = &buf[4]; /* Skip over RESERVED area in header */ @@ -396,7 +383,7 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) spin_unlock(&dev->t10_alua.tg_pt_gps_lock); if (!core_alua_do_port_transition(tg_pt_gp, - dev, l_port, nacl, + dev, l_lun, nacl, alua_access_state, 1)) found = true; @@ -406,6 +393,8 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) } spin_unlock(&dev->t10_alua.tg_pt_gps_lock); } else { + struct se_lun *lun; + /* * Extract the RELATIVE TARGET PORT IDENTIFIER to identify * the Target Port in question for the the incoming @@ -417,17 +406,16 @@ target_emulate_set_target_port_groups(struct se_cmd *cmd) * for the struct se_device storage object. */ spin_lock(&dev->se_port_lock); - list_for_each_entry(port, &dev->dev_sep_list, - sep_list) { - if (port->sep_rtpi != rtpi) + list_for_each_entry(lun, &dev->dev_sep_list, + lun_dev_link) { + if (lun->lun_rtpi != rtpi) continue; - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - + // XXX: racy unlock spin_unlock(&dev->se_port_lock); if (!core_alua_set_tg_pt_secondary_state( - tg_pt_gp_mem, port, 1, 1)) + lun, 1, 1)) found = true; spin_lock(&dev->se_port_lock); @@ -696,9 +684,7 @@ target_alua_state_check(struct se_cmd *cmd) struct se_device *dev = cmd->se_dev; unsigned char *cdb = cmd->t_task_cdb; struct se_lun *lun = cmd->se_lun; - struct se_port *port = lun->lun_sep; struct t10_alua_tg_pt_gp *tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; int out_alua_state, nonop_delay_msecs; if (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE) @@ -706,33 +692,27 @@ target_alua_state_check(struct se_cmd *cmd) if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) return 0; - if (!port) - return 0; /* * First, check for a struct se_port specific secondary ALUA target port * access state: OFFLINE */ - if (atomic_read(&port->sep_tg_pt_secondary_offline)) { + if (atomic_read(&lun->lun_tg_pt_secondary_offline)) { pr_debug("ALUA: Got secondary offline status for local" " target port\n"); set_ascq(cmd, ASCQ_04H_ALUA_OFFLINE); return TCM_CHECK_CONDITION_NOT_READY; } - /* - * Second, obtain the struct t10_alua_tg_pt_gp_member pointer to the - * ALUA target port group, to obtain current ALUA access state. - * Otherwise look for the underlying struct se_device association with - * a ALUA logical unit group. - */ - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) + + if (!lun->lun_tg_pt_gp) return 0; - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; out_alua_state = atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state); nonop_delay_msecs = tg_pt_gp->tg_pt_gp_nonop_delay_msecs; - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + + // XXX: keeps using tg_pt_gp witout reference after unlock + spin_unlock(&lun->lun_tg_pt_gp_lock); /* * Process ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED in a separate conditional * statement so the compiler knows explicitly to check this case first. @@ -764,7 +744,7 @@ target_alua_state_check(struct se_cmd *cmd) break; /* * OFFLINE is a secondary ALUA target port group access state, that is - * handled above with struct se_port->sep_tg_pt_secondary_offline=1 + * handled above with struct se_lun->lun_tg_pt_secondary_offline=1 */ case ALUA_ACCESS_STATE_OFFLINE: default: @@ -906,10 +886,6 @@ int core_alua_check_nonop_delay( } EXPORT_SYMBOL(core_alua_check_nonop_delay); -/* - * Called with tg_pt_gp->tg_pt_gp_md_mutex or tg_pt_gp_mem->sep_tg_pt_md_mutex - * - */ static int core_alua_write_tpg_metadata( const char *path, unsigned char *md_buf, @@ -971,16 +947,14 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work) struct t10_alua_tg_pt_gp, tg_pt_gp_transition_work.work); struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; struct se_dev_entry *se_deve; + struct se_lun *lun; struct se_lun_acl *lacl; - struct se_port *port; - struct t10_alua_tg_pt_gp_member *mem; bool explicit = (tg_pt_gp->tg_pt_gp_alua_access_status == ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG); spin_lock(&tg_pt_gp->tg_pt_gp_lock); - list_for_each_entry(mem, &tg_pt_gp->tg_pt_gp_mem_list, - tg_pt_gp_mem_list) { - port = mem->tg_pt; + list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, + lun_tg_pt_gp_link) { /* * After an implicit target port asymmetric access state * change, a device server shall establish a unit attention @@ -995,14 +969,13 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work) * every I_T nexus other than the I_T nexus on which the SET * TARGET PORT GROUPS command */ - atomic_inc_mb(&mem->tg_pt_gp_mem_ref_cnt); + atomic_inc_mb(&lun->lun_active); spin_unlock(&tg_pt_gp->tg_pt_gp_lock); - spin_lock_bh(&port->sep_alua_lock); - list_for_each_entry(se_deve, &port->sep_alua_list, - alua_port_list) { + spin_lock_bh(&lun->lun_deve_lock); + list_for_each_entry(se_deve, &lun->lun_deve_list, lun_link) { lacl = rcu_dereference_check(se_deve->se_lun_acl, - lockdep_is_held(&port->sep_alua_lock)); + lockdep_is_held(&lun->lun_deve_lock)); /* * se_deve->se_lun_acl pointer may be NULL for a * entry created without explicit Node+MappedLUN ACLs @@ -1014,18 +987,18 @@ static void core_alua_do_transition_tg_pt_work(struct work_struct *work) ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && (tg_pt_gp->tg_pt_gp_alua_nacl != NULL) && (tg_pt_gp->tg_pt_gp_alua_nacl == lacl->se_lun_nacl) && - (tg_pt_gp->tg_pt_gp_alua_port != NULL) && - (tg_pt_gp->tg_pt_gp_alua_port == port)) + (tg_pt_gp->tg_pt_gp_alua_lun != NULL) && + (tg_pt_gp->tg_pt_gp_alua_lun == lun)) continue; core_scsi3_ua_allocate(lacl->se_lun_nacl, se_deve->mapped_lun, 0x2A, ASCQ_2AH_ASYMMETRIC_ACCESS_STATE_CHANGED); } - spin_unlock_bh(&port->sep_alua_lock); + spin_unlock_bh(&lun->lun_deve_lock); spin_lock(&tg_pt_gp->tg_pt_gp_lock); - atomic_dec_mb(&mem->tg_pt_gp_mem_ref_cnt); + atomic_dec_mb(&lun->lun_active); } spin_unlock(&tg_pt_gp->tg_pt_gp_lock); /* @@ -1143,7 +1116,7 @@ static int core_alua_do_transition_tg_pt( int core_alua_do_port_transition( struct t10_alua_tg_pt_gp *l_tg_pt_gp, struct se_device *l_dev, - struct se_port *l_port, + struct se_lun *l_lun, struct se_node_acl *l_nacl, int new_state, int explicit) @@ -1173,7 +1146,7 @@ int core_alua_do_port_transition( * core_alua_do_transition_tg_pt() will always return * success. */ - l_tg_pt_gp->tg_pt_gp_alua_port = l_port; + l_tg_pt_gp->tg_pt_gp_alua_lun = l_lun; l_tg_pt_gp->tg_pt_gp_alua_nacl = l_nacl; rc = core_alua_do_transition_tg_pt(l_tg_pt_gp, new_state, explicit); @@ -1212,10 +1185,10 @@ int core_alua_do_port_transition( continue; if (l_tg_pt_gp == tg_pt_gp) { - tg_pt_gp->tg_pt_gp_alua_port = l_port; + tg_pt_gp->tg_pt_gp_alua_lun = l_lun; tg_pt_gp->tg_pt_gp_alua_nacl = l_nacl; } else { - tg_pt_gp->tg_pt_gp_alua_port = NULL; + tg_pt_gp->tg_pt_gp_alua_lun = NULL; tg_pt_gp->tg_pt_gp_alua_nacl = NULL; } atomic_inc_mb(&tg_pt_gp->tg_pt_gp_ref_cnt); @@ -1252,22 +1225,20 @@ int core_alua_do_port_transition( return rc; } -/* - * Called with tg_pt_gp_mem->sep_tg_pt_md_mutex held - */ -static int core_alua_update_tpg_secondary_metadata( - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, - struct se_port *port) +static int core_alua_update_tpg_secondary_metadata(struct se_lun *lun) { + struct se_portal_group *se_tpg = lun->lun_tpg; unsigned char *md_buf; - struct se_portal_group *se_tpg = port->sep_tpg; char path[ALUA_METADATA_PATH_LEN], wwn[ALUA_SECONDARY_METADATA_WWN_LEN]; int len, rc; + mutex_lock(&lun->lun_tg_pt_md_mutex); + md_buf = kzalloc(ALUA_MD_BUF_LEN, GFP_KERNEL); if (!md_buf) { pr_err("Unable to allocate buf for ALUA metadata\n"); - return -ENOMEM; + rc = -ENOMEM; + goto out_unlock; } memset(path, 0, ALUA_METADATA_PATH_LEN); @@ -1282,32 +1253,33 @@ static int core_alua_update_tpg_secondary_metadata( len = snprintf(md_buf, ALUA_MD_BUF_LEN, "alua_tg_pt_offline=%d\n" "alua_tg_pt_status=0x%02x\n", - atomic_read(&port->sep_tg_pt_secondary_offline), - port->sep_tg_pt_secondary_stat); + atomic_read(&lun->lun_tg_pt_secondary_offline), + lun->lun_tg_pt_secondary_stat); snprintf(path, ALUA_METADATA_PATH_LEN, "/var/target/alua/%s/%s/lun_%u", se_tpg->se_tpg_tfo->get_fabric_name(), wwn, - port->sep_lun->unpacked_lun); + lun->unpacked_lun); rc = core_alua_write_tpg_metadata(path, md_buf, len); kfree(md_buf); +out_unlock: + mutex_unlock(&lun->lun_tg_pt_md_mutex); return rc; } static int core_alua_set_tg_pt_secondary_state( - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, - struct se_port *port, + struct se_lun *lun, int explicit, int offline) { struct t10_alua_tg_pt_gp *tg_pt_gp; int trans_delay_msecs; - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; if (!tg_pt_gp) { - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); pr_err("Unable to complete secondary state" " transition\n"); return -EINVAL; @@ -1315,14 +1287,14 @@ static int core_alua_set_tg_pt_secondary_state( trans_delay_msecs = tg_pt_gp->tg_pt_gp_trans_delay_msecs; /* * Set the secondary ALUA target port access state to OFFLINE - * or release the previously secondary state for struct se_port + * or release the previously secondary state for struct se_lun */ if (offline) - atomic_set(&port->sep_tg_pt_secondary_offline, 1); + atomic_set(&lun->lun_tg_pt_secondary_offline, 1); else - atomic_set(&port->sep_tg_pt_secondary_offline, 0); + atomic_set(&lun->lun_tg_pt_secondary_offline, 0); - port->sep_tg_pt_secondary_stat = (explicit) ? + lun->lun_tg_pt_secondary_stat = (explicit) ? ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG : ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA; @@ -1331,7 +1303,7 @@ static int core_alua_set_tg_pt_secondary_state( "implicit", config_item_name(&tg_pt_gp->tg_pt_gp_group.cg_item), tg_pt_gp->tg_pt_gp_id, (offline) ? "OFFLINE" : "ONLINE"); - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); /* * Do the optional transition delay after we set the secondary * ALUA access state. @@ -1342,11 +1314,8 @@ static int core_alua_set_tg_pt_secondary_state( * See if we need to update the ALUA fabric port metadata for * secondary state and status */ - if (port->sep_tg_pt_secondary_write_md) { - mutex_lock(&port->sep_tg_pt_md_mutex); - core_alua_update_tpg_secondary_metadata(tg_pt_gp_mem, port); - mutex_unlock(&port->sep_tg_pt_md_mutex); - } + if (lun->lun_tg_pt_secondary_write_md) + core_alua_update_tpg_secondary_metadata(lun); return 0; } @@ -1700,7 +1669,7 @@ struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp(struct se_device *dev, return NULL; } INIT_LIST_HEAD(&tg_pt_gp->tg_pt_gp_list); - INIT_LIST_HEAD(&tg_pt_gp->tg_pt_gp_mem_list); + INIT_LIST_HEAD(&tg_pt_gp->tg_pt_gp_lun_list); mutex_init(&tg_pt_gp->tg_pt_gp_md_mutex); spin_lock_init(&tg_pt_gp->tg_pt_gp_lock); atomic_set(&tg_pt_gp->tg_pt_gp_ref_cnt, 0); @@ -1794,32 +1763,11 @@ again: return 0; } -struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem( - struct se_port *port) -{ - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; - - tg_pt_gp_mem = kmem_cache_zalloc(t10_alua_tg_pt_gp_mem_cache, - GFP_KERNEL); - if (!tg_pt_gp_mem) { - pr_err("Unable to allocate struct t10_alua_tg_pt_gp_member\n"); - return ERR_PTR(-ENOMEM); - } - INIT_LIST_HEAD(&tg_pt_gp_mem->tg_pt_gp_mem_list); - spin_lock_init(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - atomic_set(&tg_pt_gp_mem->tg_pt_gp_mem_ref_cnt, 0); - - tg_pt_gp_mem->tg_pt = port; - port->sep_alua_tg_pt_gp_mem = tg_pt_gp_mem; - - return tg_pt_gp_mem; -} - void core_alua_free_tg_pt_gp( struct t10_alua_tg_pt_gp *tg_pt_gp) { struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, *tg_pt_gp_mem_tmp; + struct se_lun *lun, *next; /* * Once we have reached this point, config_item_put() has already @@ -1850,30 +1798,24 @@ void core_alua_free_tg_pt_gp( * struct se_port. */ spin_lock(&tg_pt_gp->tg_pt_gp_lock); - list_for_each_entry_safe(tg_pt_gp_mem, tg_pt_gp_mem_tmp, - &tg_pt_gp->tg_pt_gp_mem_list, tg_pt_gp_mem_list) { - if (tg_pt_gp_mem->tg_pt_gp_assoc) { - list_del(&tg_pt_gp_mem->tg_pt_gp_mem_list); - tg_pt_gp->tg_pt_gp_members--; - tg_pt_gp_mem->tg_pt_gp_assoc = 0; - } + list_for_each_entry_safe(lun, next, + &tg_pt_gp->tg_pt_gp_lun_list, lun_tg_pt_gp_link) { + list_del_init(&lun->lun_tg_pt_gp_link); + tg_pt_gp->tg_pt_gp_members--; + spin_unlock(&tg_pt_gp->tg_pt_gp_lock); /* - * tg_pt_gp_mem is associated with a single - * se_port->sep_alua_tg_pt_gp_mem, and is released via - * core_alua_free_tg_pt_gp_mem(). - * * If the passed tg_pt_gp does NOT match the default_tg_pt_gp, * assume we want to re-associate a given tg_pt_gp_mem with * default_tg_pt_gp. */ - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_lock(&lun->lun_tg_pt_gp_lock); if (tg_pt_gp != dev->t10_alua.default_tg_pt_gp) { - __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, + __target_attach_tg_pt_gp(lun, dev->t10_alua.default_tg_pt_gp); } else - tg_pt_gp_mem->tg_pt_gp = NULL; - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + lun->lun_tg_pt_gp = NULL; + spin_unlock(&lun->lun_tg_pt_gp_lock); spin_lock(&tg_pt_gp->tg_pt_gp_lock); } @@ -1882,35 +1824,6 @@ void core_alua_free_tg_pt_gp( kmem_cache_free(t10_alua_tg_pt_gp_cache, tg_pt_gp); } -void core_alua_free_tg_pt_gp_mem(struct se_port *port) -{ - struct t10_alua_tg_pt_gp *tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; - - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) - return; - - while (atomic_read(&tg_pt_gp_mem->tg_pt_gp_mem_ref_cnt)) - cpu_relax(); - - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; - if (tg_pt_gp) { - spin_lock(&tg_pt_gp->tg_pt_gp_lock); - if (tg_pt_gp_mem->tg_pt_gp_assoc) { - list_del(&tg_pt_gp_mem->tg_pt_gp_mem_list); - tg_pt_gp->tg_pt_gp_members--; - tg_pt_gp_mem->tg_pt_gp_assoc = 0; - } - spin_unlock(&tg_pt_gp->tg_pt_gp_lock); - tg_pt_gp_mem->tg_pt_gp = NULL; - } - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - - kmem_cache_free(t10_alua_tg_pt_gp_mem_cache, tg_pt_gp_mem); -} - static struct t10_alua_tg_pt_gp *core_alua_get_tg_pt_gp_by_name( struct se_device *dev, const char *name) { @@ -1944,50 +1857,58 @@ static void core_alua_put_tg_pt_gp_from_name( spin_unlock(&dev->t10_alua.tg_pt_gps_lock); } -/* - * Called with struct t10_alua_tg_pt_gp_member->tg_pt_gp_mem_lock held - */ -void __core_alua_attach_tg_pt_gp_mem( - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, - struct t10_alua_tg_pt_gp *tg_pt_gp) +static void __target_attach_tg_pt_gp(struct se_lun *lun, + struct t10_alua_tg_pt_gp *tg_pt_gp) { + assert_spin_locked(&lun->lun_tg_pt_gp_lock); + spin_lock(&tg_pt_gp->tg_pt_gp_lock); - tg_pt_gp_mem->tg_pt_gp = tg_pt_gp; - tg_pt_gp_mem->tg_pt_gp_assoc = 1; - list_add_tail(&tg_pt_gp_mem->tg_pt_gp_mem_list, - &tg_pt_gp->tg_pt_gp_mem_list); + lun->lun_tg_pt_gp = tg_pt_gp; + list_add_tail(&lun->lun_tg_pt_gp_link, &tg_pt_gp->tg_pt_gp_lun_list); tg_pt_gp->tg_pt_gp_members++; spin_unlock(&tg_pt_gp->tg_pt_gp_lock); } -/* - * Called with struct t10_alua_tg_pt_gp_member->tg_pt_gp_mem_lock held - */ -static void __core_alua_drop_tg_pt_gp_mem( - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem, - struct t10_alua_tg_pt_gp *tg_pt_gp) +void target_attach_tg_pt_gp(struct se_lun *lun, + struct t10_alua_tg_pt_gp *tg_pt_gp) +{ + spin_lock(&lun->lun_tg_pt_gp_lock); + __target_attach_tg_pt_gp(lun, tg_pt_gp); + spin_unlock(&lun->lun_tg_pt_gp_lock); +} + +static void __target_detach_tg_pt_gp(struct se_lun *lun, + struct t10_alua_tg_pt_gp *tg_pt_gp) { + assert_spin_locked(&lun->lun_tg_pt_gp_lock); + spin_lock(&tg_pt_gp->tg_pt_gp_lock); - list_del(&tg_pt_gp_mem->tg_pt_gp_mem_list); - tg_pt_gp_mem->tg_pt_gp = NULL; - tg_pt_gp_mem->tg_pt_gp_assoc = 0; + list_del_init(&lun->lun_tg_pt_gp_link); tg_pt_gp->tg_pt_gp_members--; spin_unlock(&tg_pt_gp->tg_pt_gp_lock); + + lun->lun_tg_pt_gp = NULL; } -ssize_t core_alua_show_tg_pt_gp_info(struct se_port *port, char *page) +void target_detach_tg_pt_gp(struct se_lun *lun) +{ + struct t10_alua_tg_pt_gp *tg_pt_gp; + + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; + if (tg_pt_gp) + __target_detach_tg_pt_gp(lun, tg_pt_gp); + spin_unlock(&lun->lun_tg_pt_gp_lock); +} + +ssize_t core_alua_show_tg_pt_gp_info(struct se_lun *lun, char *page) { struct config_item *tg_pt_ci; struct t10_alua_tg_pt_gp *tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; ssize_t len = 0; - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) - return len; - - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; if (tg_pt_gp) { tg_pt_ci = &tg_pt_gp->tg_pt_gp_group.cg_item; len += sprintf(page, "TG Port Alias: %s\nTG Port Group ID:" @@ -1999,34 +1920,29 @@ ssize_t core_alua_show_tg_pt_gp_info(struct se_port *port, char *page) &tg_pt_gp->tg_pt_gp_alua_access_state)), core_alua_dump_status( tg_pt_gp->tg_pt_gp_alua_access_status), - (atomic_read(&port->sep_tg_pt_secondary_offline)) ? + atomic_read(&lun->lun_tg_pt_secondary_offline) ? "Offline" : "None", - core_alua_dump_status(port->sep_tg_pt_secondary_stat)); + core_alua_dump_status(lun->lun_tg_pt_secondary_stat)); } - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); return len; } ssize_t core_alua_store_tg_pt_gp_info( - struct se_port *port, + struct se_lun *lun, const char *page, size_t count) { - struct se_portal_group *tpg; - struct se_lun *lun; - struct se_device *dev = port->sep_lun->lun_se_dev; + struct se_portal_group *tpg = lun->lun_tpg; + struct se_device *dev = lun->lun_se_dev; struct t10_alua_tg_pt_gp *tg_pt_gp = NULL, *tg_pt_gp_new = NULL; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; unsigned char buf[TG_PT_GROUP_NAME_BUF]; int move = 0; - tpg = port->sep_tpg; - lun = port->sep_lun; - - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) - return 0; + if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH || + (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) + return -ENODEV; if (count > TG_PT_GROUP_NAME_BUF) { pr_err("ALUA Target Port Group alias too large!\n"); @@ -2050,8 +1966,8 @@ ssize_t core_alua_store_tg_pt_gp_info( return -ENODEV; } - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; if (tg_pt_gp) { /* * Clearing an existing tg_pt_gp association, and replacing @@ -2069,24 +1985,19 @@ ssize_t core_alua_store_tg_pt_gp_info( &tg_pt_gp->tg_pt_gp_group.cg_item), tg_pt_gp->tg_pt_gp_id); - __core_alua_drop_tg_pt_gp_mem(tg_pt_gp_mem, tg_pt_gp); - __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, + __target_detach_tg_pt_gp(lun, tg_pt_gp); + __target_attach_tg_pt_gp(lun, dev->t10_alua.default_tg_pt_gp); - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); return count; } - /* - * Removing existing association of tg_pt_gp_mem with tg_pt_gp - */ - __core_alua_drop_tg_pt_gp_mem(tg_pt_gp_mem, tg_pt_gp); + __target_detach_tg_pt_gp(lun, tg_pt_gp); move = 1; } - /* - * Associate tg_pt_gp_mem with tg_pt_gp_new. - */ - __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, tg_pt_gp_new); - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + + __target_attach_tg_pt_gp(lun, tg_pt_gp_new); + spin_unlock(&lun->lun_tg_pt_gp_lock); pr_debug("Target_Core_ConfigFS: %s %s/tpgt_%hu/%s to ALUA" " Target Port Group: alua/%s, ID: %hu\n", (move) ? "Moving" : "Adding", tpg->se_tpg_tfo->tpg_get_wwn(tpg), @@ -2269,11 +2180,8 @@ ssize_t core_alua_store_preferred_bit( ssize_t core_alua_show_offline_bit(struct se_lun *lun, char *page) { - if (!lun->lun_sep) - return -ENODEV; - return sprintf(page, "%d\n", - atomic_read(&lun->lun_sep->sep_tg_pt_secondary_offline)); + atomic_read(&lun->lun_tg_pt_secondary_offline)); } ssize_t core_alua_store_offline_bit( @@ -2281,11 +2189,12 @@ ssize_t core_alua_store_offline_bit( const char *page, size_t count) { - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; + struct se_device *dev = lun->lun_se_dev; unsigned long tmp; int ret; - if (!lun->lun_sep) + if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH || + (dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) return -ENODEV; ret = kstrtoul(page, 0, &tmp); @@ -2298,14 +2207,8 @@ ssize_t core_alua_store_offline_bit( tmp); return -EINVAL; } - tg_pt_gp_mem = lun->lun_sep->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) { - pr_err("Unable to locate *tg_pt_gp_mem\n"); - return -EINVAL; - } - ret = core_alua_set_tg_pt_secondary_state(tg_pt_gp_mem, - lun->lun_sep, 0, (int)tmp); + ret = core_alua_set_tg_pt_secondary_state(lun, 0, (int)tmp); if (ret < 0) return -EINVAL; @@ -2316,7 +2219,7 @@ ssize_t core_alua_show_secondary_status( struct se_lun *lun, char *page) { - return sprintf(page, "%d\n", lun->lun_sep->sep_tg_pt_secondary_stat); + return sprintf(page, "%d\n", lun->lun_tg_pt_secondary_stat); } ssize_t core_alua_store_secondary_status( @@ -2339,7 +2242,7 @@ ssize_t core_alua_store_secondary_status( tmp); return -EINVAL; } - lun->lun_sep->sep_tg_pt_secondary_stat = (int)tmp; + lun->lun_tg_pt_secondary_stat = (int)tmp; return count; } @@ -2348,8 +2251,7 @@ ssize_t core_alua_show_secondary_write_metadata( struct se_lun *lun, char *page) { - return sprintf(page, "%d\n", - lun->lun_sep->sep_tg_pt_secondary_write_md); + return sprintf(page, "%d\n", lun->lun_tg_pt_secondary_write_md); } ssize_t core_alua_store_secondary_write_metadata( @@ -2370,7 +2272,7 @@ ssize_t core_alua_store_secondary_write_metadata( " %lu\n", tmp); return -EINVAL; } - lun->lun_sep->sep_tg_pt_secondary_write_md = (int)tmp; + lun->lun_tg_pt_secondary_write_md = (int)tmp; return count; } diff --git a/drivers/target/target_core_alua.h b/drivers/target/target_core_alua.h index 0a7d65e80404..9b250f9b33bf 100644 --- a/drivers/target/target_core_alua.h +++ b/drivers/target/target_core_alua.h @@ -85,7 +85,6 @@ extern struct kmem_cache *t10_alua_lu_gp_cache; extern struct kmem_cache *t10_alua_lu_gp_mem_cache; extern struct kmem_cache *t10_alua_tg_pt_gp_cache; -extern struct kmem_cache *t10_alua_tg_pt_gp_mem_cache; extern struct kmem_cache *t10_alua_lba_map_cache; extern struct kmem_cache *t10_alua_lba_map_mem_cache; @@ -94,7 +93,7 @@ extern sense_reason_t target_emulate_set_target_port_groups(struct se_cmd *); extern sense_reason_t target_emulate_report_referrals(struct se_cmd *); extern int core_alua_check_nonop_delay(struct se_cmd *); extern int core_alua_do_port_transition(struct t10_alua_tg_pt_gp *, - struct se_device *, struct se_port *, + struct se_device *, struct se_lun *, struct se_node_acl *, int, int); extern char *core_alua_dump_status(int); extern struct t10_alua_lba_map *core_alua_allocate_lba_map( @@ -117,14 +116,11 @@ extern void core_alua_drop_lu_gp_dev(struct se_device *); extern struct t10_alua_tg_pt_gp *core_alua_allocate_tg_pt_gp( struct se_device *, const char *, int); extern int core_alua_set_tg_pt_gp_id(struct t10_alua_tg_pt_gp *, u16); -extern struct t10_alua_tg_pt_gp_member *core_alua_allocate_tg_pt_gp_mem( - struct se_port *); extern void core_alua_free_tg_pt_gp(struct t10_alua_tg_pt_gp *); -extern void core_alua_free_tg_pt_gp_mem(struct se_port *); -extern void __core_alua_attach_tg_pt_gp_mem(struct t10_alua_tg_pt_gp_member *, - struct t10_alua_tg_pt_gp *); -extern ssize_t core_alua_show_tg_pt_gp_info(struct se_port *, char *); -extern ssize_t core_alua_store_tg_pt_gp_info(struct se_port *, const char *, +extern void target_detach_tg_pt_gp(struct se_lun *); +extern void target_attach_tg_pt_gp(struct se_lun *, struct t10_alua_tg_pt_gp *); +extern ssize_t core_alua_show_tg_pt_gp_info(struct se_lun *, char *); +extern ssize_t core_alua_store_tg_pt_gp_info(struct se_lun *, const char *, size_t); extern ssize_t core_alua_show_access_type(struct t10_alua_tg_pt_gp *, char *); extern ssize_t core_alua_store_access_type(struct t10_alua_tg_pt_gp *, diff --git a/drivers/target/target_core_configfs.c b/drivers/target/target_core_configfs.c index 4313eea060ed..f97b969e6714 100644 --- a/drivers/target/target_core_configfs.c +++ b/drivers/target/target_core_configfs.c @@ -2889,21 +2889,16 @@ static ssize_t target_core_alua_tg_pt_gp_show_attr_members( struct t10_alua_tg_pt_gp *tg_pt_gp, char *page) { - struct se_port *port; - struct se_portal_group *tpg; struct se_lun *lun; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; ssize_t len = 0, cur_len; unsigned char buf[TG_PT_GROUP_NAME_BUF]; memset(buf, 0, TG_PT_GROUP_NAME_BUF); spin_lock(&tg_pt_gp->tg_pt_gp_lock); - list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, - tg_pt_gp_mem_list) { - port = tg_pt_gp_mem->tg_pt; - tpg = port->sep_tpg; - lun = port->sep_lun; + list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, + lun_tg_pt_gp_link) { + 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(), diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 1e4485b1849d..8485e9a789fc 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -120,8 +120,8 @@ transport_lookup_cmd_lun(struct se_cmd *se_cmd, u32 unpacked_lun) (se_cmd->data_direction != DMA_NONE)) return TCM_WRITE_PROTECTED; - se_lun = &se_sess->se_tpg->tpg_virt_lun0; - se_cmd->se_lun = &se_sess->se_tpg->tpg_virt_lun0; + se_lun = se_sess->se_tpg->tpg_virt_lun0; + se_cmd->se_lun = se_sess->se_tpg->tpg_virt_lun0; se_cmd->orig_fe_lun = 0; se_cmd->se_cmd_flags |= SCF_SE_LUN_CMD; @@ -309,7 +309,6 @@ int core_enable_device_list_for_node( struct se_node_acl *nacl, struct se_portal_group *tpg) { - struct se_port *port = lun->lun_sep; struct se_dev_entry *orig, *new; new = kzalloc(sizeof(*new), GFP_KERNEL); @@ -320,8 +319,8 @@ int core_enable_device_list_for_node( atomic_set(&new->ua_count, 0); spin_lock_init(&new->ua_lock); - INIT_LIST_HEAD(&new->alua_port_list); INIT_LIST_HEAD(&new->ua_list); + INIT_LIST_HEAD(&new->lun_link); new->mapped_lun = mapped_lun; kref_init(&new->pr_kref); @@ -357,10 +356,10 @@ int core_enable_device_list_for_node( hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); mutex_unlock(&nacl->lun_entry_mutex); - spin_lock_bh(&port->sep_alua_lock); - list_del(&orig->alua_port_list); - list_add_tail(&new->alua_port_list, &port->sep_alua_list); - spin_unlock_bh(&port->sep_alua_lock); + spin_lock_bh(&lun->lun_deve_lock); + list_del(&orig->lun_link); + list_add_tail(&new->lun_link, &lun->lun_deve_list); + spin_unlock_bh(&lun->lun_deve_lock); kref_put(&orig->pr_kref, target_pr_kref_release); wait_for_completion(&orig->pr_comp); @@ -374,9 +373,9 @@ int core_enable_device_list_for_node( hlist_add_head_rcu(&new->link, &nacl->lun_entry_hlist); mutex_unlock(&nacl->lun_entry_mutex); - spin_lock_bh(&port->sep_alua_lock); - list_add_tail(&new->alua_port_list, &port->sep_alua_list); - spin_unlock_bh(&port->sep_alua_lock); + spin_lock_bh(&lun->lun_deve_lock); + list_add_tail(&new->lun_link, &lun->lun_deve_list); + spin_unlock_bh(&lun->lun_deve_lock); return 0; } @@ -390,23 +389,22 @@ void core_disable_device_list_for_node( struct se_node_acl *nacl, struct se_portal_group *tpg) { - struct se_port *port = lun->lun_sep; /* * If the MappedLUN entry is being disabled, the entry in - * port->sep_alua_list must be removed now before clearing the + * lun->lun_deve_list must be removed now before clearing the * struct se_dev_entry pointers below as logic in * core_alua_do_transition_tg_pt() depends on these being present. * * deve->se_lun_acl will be NULL for demo-mode created LUNs * that have not been explicitly converted to MappedLUNs -> - * struct se_lun_acl, but we remove deve->alua_port_list from - * port->sep_alua_list. This also means that active UAs and + * struct se_lun_acl, but we remove deve->lun_link from + * lun->lun_deve_list. This also means that active UAs and * NodeACL context specific PR metadata for demo-mode * MappedLUN *deve will be released below.. */ - spin_lock_bh(&port->sep_alua_lock); - list_del(&orig->alua_port_list); - spin_unlock_bh(&port->sep_alua_lock); + spin_lock_bh(&lun->lun_deve_lock); + list_del(&orig->lun_link); + spin_unlock_bh(&lun->lun_deve_lock); /* * Disable struct se_dev_entry LUN ACL mapping */ @@ -458,27 +456,16 @@ void core_clear_lun_from_tpg(struct se_lun *lun, struct se_portal_group *tpg) mutex_unlock(&tpg->acl_node_mutex); } -static struct se_port *core_alloc_port(struct se_device *dev) +int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev) { - struct se_port *port, *port_tmp; - - port = kzalloc(sizeof(struct se_port), GFP_KERNEL); - if (!port) { - pr_err("Unable to allocate struct se_port\n"); - return ERR_PTR(-ENOMEM); - } - INIT_LIST_HEAD(&port->sep_alua_list); - INIT_LIST_HEAD(&port->sep_list); - atomic_set(&port->sep_tg_pt_secondary_offline, 0); - spin_lock_init(&port->sep_alua_lock); - mutex_init(&port->sep_tg_pt_md_mutex); + struct se_lun *tmp; spin_lock(&dev->se_port_lock); - if (dev->dev_port_count == 0x0000ffff) { + if (dev->export_count == 0x0000ffff) { pr_warn("Reached dev->dev_port_count ==" " 0x0000ffff\n"); spin_unlock(&dev->se_port_lock); - return ERR_PTR(-ENOSPC); + return -ENOSPC; } again: /* @@ -493,135 +480,23 @@ again: * 2h Relative port 2, historically known as port B * 3h to FFFFh Relative port 3 through 65 535 */ - port->sep_rtpi = dev->dev_rpti_counter++; - if (!port->sep_rtpi) + lun->lun_rtpi = dev->dev_rpti_counter++; + if (!lun->lun_rtpi) goto again; - list_for_each_entry(port_tmp, &dev->dev_sep_list, sep_list) { + list_for_each_entry(tmp, &dev->dev_sep_list, lun_dev_link) { /* * Make sure RELATIVE TARGET PORT IDENTIFIER is unique * for 16-bit wrap.. */ - if (port->sep_rtpi == port_tmp->sep_rtpi) + if (lun->lun_rtpi == tmp->lun_rtpi) goto again; } spin_unlock(&dev->se_port_lock); - return port; -} - -static void core_export_port( - struct se_device *dev, - struct se_portal_group *tpg, - struct se_port *port, - struct se_lun *lun) -{ - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem = NULL; - - spin_lock(&dev->se_port_lock); - spin_lock(&lun->lun_sep_lock); - port->sep_tpg = tpg; - port->sep_lun = lun; - lun->lun_sep = port; - spin_unlock(&lun->lun_sep_lock); - - list_add_tail(&port->sep_list, &dev->dev_sep_list); - spin_unlock(&dev->se_port_lock); - - if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) && - !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) { - tg_pt_gp_mem = core_alua_allocate_tg_pt_gp_mem(port); - if (IS_ERR(tg_pt_gp_mem) || !tg_pt_gp_mem) { - pr_err("Unable to allocate t10_alua_tg_pt" - "_gp_member_t\n"); - return; - } - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - __core_alua_attach_tg_pt_gp_mem(tg_pt_gp_mem, - dev->t10_alua.default_tg_pt_gp); - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - pr_debug("%s/%s: Adding to default ALUA Target Port" - " Group: alua/default_tg_pt_gp\n", - dev->transport->name, tpg->se_tpg_tfo->get_fabric_name()); - } - - dev->dev_port_count++; - port->sep_index = port->sep_rtpi; /* RELATIVE TARGET PORT IDENTIFIER */ -} - -/* - * Called with struct se_device->se_port_lock spinlock held. - */ -static void core_release_port(struct se_device *dev, struct se_port *port) - __releases(&dev->se_port_lock) __acquires(&dev->se_port_lock) -{ - /* - * Wait for any port reference for PR ALL_TG_PT=1 operation - * to complete in __core_scsi3_alloc_registration() - */ - spin_unlock(&dev->se_port_lock); - if (atomic_read(&port->sep_tg_pt_ref_cnt)) - cpu_relax(); - spin_lock(&dev->se_port_lock); - - core_alua_free_tg_pt_gp_mem(port); - - list_del(&port->sep_list); - dev->dev_port_count--; - kfree(port); -} - -int core_dev_export( - struct se_device *dev, - struct se_portal_group *tpg, - struct se_lun *lun) -{ - struct se_hba *hba = dev->se_hba; - struct se_port *port; - - port = core_alloc_port(dev); - if (IS_ERR(port)) - return PTR_ERR(port); - - lun->lun_index = dev->dev_index; - lun->lun_se_dev = dev; - lun->lun_rtpi = port->sep_rtpi; - - spin_lock(&hba->device_lock); - dev->export_count++; - spin_unlock(&hba->device_lock); - - core_export_port(dev, tpg, port, lun); return 0; } -void core_dev_unexport( - struct se_device *dev, - struct se_portal_group *tpg, - struct se_lun *lun) -{ - struct se_hba *hba = dev->se_hba; - struct se_port *port = lun->lun_sep; - - spin_lock(&lun->lun_sep_lock); - if (lun->lun_se_dev == NULL) { - spin_unlock(&lun->lun_sep_lock); - return; - } - spin_unlock(&lun->lun_sep_lock); - - spin_lock(&dev->se_port_lock); - core_release_port(dev, port); - spin_unlock(&dev->se_port_lock); - - spin_lock(&hba->device_lock); - dev->export_count--; - spin_unlock(&hba->device_lock); - - lun->lun_sep = NULL; - lun->lun_se_dev = NULL; -} - static void se_release_vpd_for_dev(struct se_device *dev) { struct t10_vpd *vpd, *vpd_tmp; @@ -783,10 +658,10 @@ int core_dev_add_initiator_node_lun_acl( } int core_dev_del_initiator_node_lun_acl( - struct se_portal_group *tpg, struct se_lun *lun, struct se_lun_acl *lacl) { + struct se_portal_group *tpg = lun->lun_tpg; struct se_node_acl *nacl; struct se_dev_entry *deve; @@ -930,6 +805,10 @@ struct se_device *target_alloc_device(struct se_hba *hba, const char *name) xcopy_lun->lun_se_dev = dev; spin_lock_init(&xcopy_lun->lun_sep_lock); init_completion(&xcopy_lun->lun_ref_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; return dev; } diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c index 9be8030e016f..0ee182fce1a6 100644 --- a/drivers/target/target_core_fabric_configfs.c +++ b/drivers/target/target_core_fabric_configfs.c @@ -91,12 +91,11 @@ static int target_fabric_mappedlun_link( /* * Ensure that the source port exists */ - if (!lun->lun_sep || !lun->lun_sep->sep_tpg) { - pr_err("Source se_lun->lun_sep or lun->lun_sep->sep" - "_tpg does not exist\n"); + if (!lun->lun_se_dev) { + pr_err("Source se_lun->lun_se_dev does not exist\n"); return -EINVAL; } - se_tpg = lun->lun_sep->sep_tpg; + se_tpg = lun->lun_tpg; nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item; tpg_ci = &nacl_ci->ci_group->cg_item; @@ -150,9 +149,8 @@ static int target_fabric_mappedlun_unlink( struct se_lun_acl, se_lun_group); struct se_lun *lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); - struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg; - return core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl); + return core_dev_del_initiator_node_lun_acl(lun, lacl); } CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl); @@ -643,10 +641,10 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp( struct se_lun *lun, char *page) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; - return core_alua_show_tg_pt_gp_info(lun->lun_sep, page); + return core_alua_show_tg_pt_gp_info(lun, page); } static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp( @@ -654,10 +652,10 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp( const char *page, size_t count) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; - return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count); + return core_alua_store_tg_pt_gp_info(lun, page, count); } TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR); @@ -669,7 +667,7 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline( struct se_lun *lun, char *page) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; return core_alua_show_offline_bit(lun, page); @@ -680,7 +678,7 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline( const char *page, size_t count) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; return core_alua_store_offline_bit(lun, page, count); @@ -695,7 +693,7 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_status( struct se_lun *lun, char *page) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; return core_alua_show_secondary_status(lun, page); @@ -706,7 +704,7 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_status( const char *page, size_t count) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; return core_alua_store_secondary_status(lun, page, count); @@ -721,7 +719,7 @@ static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md( struct se_lun *lun, char *page) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; return core_alua_show_secondary_write_metadata(lun, page); @@ -732,7 +730,7 @@ static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md( const char *page, size_t count) { - if (!lun || !lun->lun_sep) + if (!lun || !lun->lun_se_dev) return -ENODEV; return core_alua_store_secondary_write_metadata(lun, page, count); @@ -811,7 +809,7 @@ static int target_fabric_port_unlink( { struct se_lun *lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); - struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg; + struct se_portal_group *se_tpg = lun->lun_tpg; struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf; if (tf->tf_ops->fabric_pre_unlink) { diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index 23f992ed7cae..8d8737a13e6f 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -21,6 +21,7 @@ extern struct t10_alua_lu_gp *default_lu_gp; extern struct mutex g_device_mutex; extern struct list_head g_device_list; +int core_alloc_rtpi(struct se_lun *lun, struct se_device *dev); struct se_dev_entry *core_get_se_deve_from_rtpi(struct se_node_acl *, u16); void target_pr_kref_release(struct kref *); void core_free_device_list_for_node(struct se_node_acl *, @@ -32,10 +33,6 @@ int core_enable_device_list_for_node(struct se_lun *, struct se_lun_acl *, void core_disable_device_list_for_node(struct se_lun *, struct se_dev_entry *, struct se_node_acl *, struct se_portal_group *); void core_clear_lun_from_tpg(struct se_lun *, struct se_portal_group *); -int core_dev_export(struct se_device *, struct se_portal_group *, - struct se_lun *); -void core_dev_unexport(struct se_device *, struct se_portal_group *, - struct se_lun *); int core_dev_add_lun(struct se_portal_group *, struct se_device *, struct se_lun *lun); void core_dev_del_lun(struct se_portal_group *, struct se_lun *); @@ -43,8 +40,8 @@ struct se_lun_acl *core_dev_init_initiator_node_lun_acl(struct se_portal_group * struct se_node_acl *, u32, int *); int core_dev_add_initiator_node_lun_acl(struct se_portal_group *, struct se_lun_acl *, struct se_lun *lun, u32); -int core_dev_del_initiator_node_lun_acl(struct se_portal_group *, - struct se_lun *, struct se_lun_acl *); +int core_dev_del_initiator_node_lun_acl(struct se_lun *, + struct se_lun_acl *); void core_dev_free_initiator_node_lun_acl(struct se_portal_group *, struct se_lun_acl *lacl); int core_dev_setup_virtual_lun0(void); @@ -120,4 +117,7 @@ void target_stat_setup_dev_default_groups(struct se_device *); void target_stat_setup_port_default_groups(struct se_lun *); void target_stat_setup_mappedlun_default_groups(struct se_lun_acl *); +/* target_core_xcopy.c */ +extern struct se_portal_group xcopy_pt_tpg; + #endif /* TARGET_CORE_INTERNAL_H */ diff --git a/drivers/target/target_core_pr.c b/drivers/target/target_core_pr.c index b983f8a54766..60624bb6c598 100644 --- a/drivers/target/target_core_pr.c +++ b/drivers/target/target_core_pr.c @@ -642,7 +642,7 @@ static struct t10_pr_registration *__core_scsi3_do_alloc_registration( pr_reg->pr_reg_deve = deve; pr_reg->pr_res_mapped_lun = mapped_lun; pr_reg->pr_aptpl_target_lun = lun->unpacked_lun; - pr_reg->tg_pt_sep_rtpi = lun->lun_sep->sep_rtpi; + pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi; pr_reg->pr_res_key = sa_res_key; pr_reg->pr_reg_all_tg_pt = all_tg_pt; pr_reg->pr_reg_aptpl = aptpl; @@ -680,8 +680,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( struct se_dev_entry *deve_tmp; struct se_node_acl *nacl_tmp; struct se_lun_acl *lacl_tmp; - struct se_lun *lun_tmp; - struct se_port *port, *port_tmp; + struct se_lun *lun_tmp, *next, *dest_lun; const struct target_core_fabric_ops *tfo = nacl->se_tpg->se_tpg_tfo; struct t10_pr_registration *pr_reg, *pr_reg_atp, *pr_reg_tmp, *pr_reg_tmp_safe; int ret; @@ -704,13 +703,12 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( * for ALL_TG_PT=1 */ spin_lock(&dev->se_port_lock); - list_for_each_entry_safe(port, port_tmp, &dev->dev_sep_list, sep_list) { - atomic_inc_mb(&port->sep_tg_pt_ref_cnt); + list_for_each_entry_safe(lun_tmp, next, &dev->dev_sep_list, lun_dev_link) { + atomic_inc_mb(&lun_tmp->lun_active); spin_unlock(&dev->se_port_lock); - spin_lock_bh(&port->sep_alua_lock); - list_for_each_entry(deve_tmp, &port->sep_alua_list, - alua_port_list) { + spin_lock_bh(&lun_tmp->lun_deve_lock); + list_for_each_entry(deve_tmp, &lun_tmp->lun_deve_list, lun_link) { /* * This pointer will be NULL for demo mode MappedLUNs * that have not been make explicit via a ConfigFS @@ -720,7 +718,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( continue; lacl_tmp = rcu_dereference_check(deve_tmp->se_lun_acl, - lockdep_is_held(&port->sep_alua_lock)); + lockdep_is_held(&lun_tmp->lun_deve_lock)); nacl_tmp = lacl_tmp->se_lun_nacl; /* * Skip the matching struct se_node_acl that is allocated @@ -742,7 +740,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( continue; kref_get(&deve_tmp->pr_kref); - spin_unlock_bh(&port->sep_alua_lock); + spin_unlock_bh(&lun_tmp->lun_deve_lock); /* * Grab a configfs group dependency that is released * for the exception path at label out: below, or upon @@ -753,7 +751,7 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( if (ret < 0) { pr_err("core_scsi3_lunacl_depend" "_item() failed\n"); - atomic_dec_mb(&port->sep_tg_pt_ref_cnt); + atomic_dec_mb(&lun->lun_active); kref_put(&deve_tmp->pr_kref, target_pr_kref_release); goto out; } @@ -764,27 +762,27 @@ static struct t10_pr_registration *__core_scsi3_alloc_registration( * the original *pr_reg is processed in * __core_scsi3_add_registration() */ - lun_tmp = rcu_dereference_check(deve_tmp->se_lun, + dest_lun = rcu_dereference_check(deve_tmp->se_lun, atomic_read(&deve_tmp->pr_kref.refcount) != 0); pr_reg_atp = __core_scsi3_do_alloc_registration(dev, - nacl_tmp, lun_tmp, deve_tmp, + nacl_tmp, dest_lun, deve_tmp, deve_tmp->mapped_lun, NULL, sa_res_key, all_tg_pt, aptpl); if (!pr_reg_atp) { - atomic_dec_mb(&port->sep_tg_pt_ref_cnt); + atomic_dec_mb(&lun_tmp->lun_active); core_scsi3_lunacl_undepend_item(deve_tmp); goto out; } list_add_tail(&pr_reg_atp->pr_reg_atp_mem_list, &pr_reg->pr_reg_atp_list); - spin_lock_bh(&port->sep_alua_lock); + spin_lock_bh(&lun_tmp->lun_deve_lock); } - spin_unlock_bh(&port->sep_alua_lock); + spin_unlock_bh(&lun_tmp->lun_deve_lock); spin_lock(&dev->se_port_lock); - atomic_dec_mb(&port->sep_tg_pt_ref_cnt); + atomic_dec_mb(&lun_tmp->lun_active); } spin_unlock(&dev->se_port_lock); @@ -938,7 +936,7 @@ static int __core_scsi3_check_aptpl_registration( (pr_reg->pr_aptpl_target_lun == target_lun)) { pr_reg->pr_reg_nacl = nacl; - pr_reg->tg_pt_sep_rtpi = lun->lun_sep->sep_rtpi; + pr_reg->tg_pt_sep_rtpi = lun->lun_rtpi; list_del(&pr_reg->pr_reg_aptpl_list); spin_unlock(&pr_tmpl->aptpl_reg_lock); @@ -1465,7 +1463,6 @@ core_scsi3_decode_spec_i_port( int aptpl) { struct se_device *dev = cmd->se_dev; - struct se_port *tmp_port; struct se_portal_group *dest_tpg = NULL, *tmp_tpg; struct se_session *se_sess = cmd->se_sess; struct se_node_acl *dest_node_acl = NULL; @@ -1550,16 +1547,14 @@ core_scsi3_decode_spec_i_port( ptr = &buf[28]; while (tpdl > 0) { - struct se_lun *dest_lun; + struct se_lun *dest_lun, *tmp_lun; proto_ident = (ptr[0] & 0x0f); dest_tpg = NULL; spin_lock(&dev->se_port_lock); - list_for_each_entry(tmp_port, &dev->dev_sep_list, sep_list) { - tmp_tpg = tmp_port->sep_tpg; - if (!tmp_tpg) - continue; + list_for_each_entry(tmp_lun, &dev->dev_sep_list, lun_dev_link) { + tmp_tpg = tmp_lun->lun_tpg; /* * Look for the matching proto_ident provided by @@ -1567,7 +1562,7 @@ core_scsi3_decode_spec_i_port( */ if (tmp_tpg->proto_id != proto_ident) continue; - dest_rtpi = tmp_port->sep_rtpi; + dest_rtpi = tmp_lun->lun_rtpi; i_str = target_parse_pr_out_transport_id(tmp_tpg, (const char *)ptr, &tid_len, &iport_ptr); @@ -3119,9 +3114,8 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, struct se_session *se_sess = cmd->se_sess; struct se_device *dev = cmd->se_dev; struct se_dev_entry *dest_se_deve = NULL; - struct se_lun *se_lun = cmd->se_lun; + struct se_lun *se_lun = cmd->se_lun, *tmp_lun; struct se_node_acl *pr_res_nacl, *pr_reg_nacl, *dest_node_acl = NULL; - struct se_port *se_port; struct se_portal_group *se_tpg, *dest_se_tpg = NULL; const struct target_core_fabric_ops *dest_tf_ops = NULL, *tf_ops; struct t10_pr_registration *pr_reg, *pr_res_holder, *dest_pr_reg; @@ -3206,12 +3200,10 @@ core_scsi3_emulate_pro_register_and_move(struct se_cmd *cmd, u64 res_key, } spin_lock(&dev->se_port_lock); - list_for_each_entry(se_port, &dev->dev_sep_list, sep_list) { - if (se_port->sep_rtpi != rtpi) - continue; - dest_se_tpg = se_port->sep_tpg; - if (!dest_se_tpg) + list_for_each_entry(tmp_lun, &dev->dev_sep_list, lun_dev_link) { + if (tmp_lun->lun_rtpi != rtpi) continue; + dest_se_tpg = tmp_lun->lun_tpg; dest_tf_ops = dest_se_tpg->se_tpg_tfo; if (!dest_tf_ops) continue; diff --git a/drivers/target/target_core_spc.c b/drivers/target/target_core_spc.c index 9f995b87b8d1..34d8292a4432 100644 --- a/drivers/target/target_core_spc.c +++ b/drivers/target/target_core_spc.c @@ -37,10 +37,9 @@ #include "target_core_ua.h" #include "target_core_xcopy.h" -static void spc_fill_alua_data(struct se_port *port, unsigned char *buf) +static void spc_fill_alua_data(struct se_lun *lun, unsigned char *buf) { struct t10_alua_tg_pt_gp *tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; /* * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. @@ -53,17 +52,11 @@ static void spc_fill_alua_data(struct se_port *port, unsigned char *buf) * * See spc4r17 section 6.4.2 Table 135 */ - if (!port) - return; - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) - return; - - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; if (tg_pt_gp) buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); } sense_reason_t @@ -94,7 +87,7 @@ spc_emulate_inquiry_std(struct se_cmd *cmd, unsigned char *buf) /* * Enable SCCS and TPGS fields for Emulated ALUA */ - spc_fill_alua_data(lun->lun_sep, buf); + spc_fill_alua_data(lun, buf); /* * Set Third-Party Copy (3PC) bit to indicate support for EXTENDED_COPY @@ -181,11 +174,9 @@ spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) { struct se_device *dev = cmd->se_dev; struct se_lun *lun = cmd->se_lun; - struct se_port *port = NULL; struct se_portal_group *tpg = NULL; struct t10_alua_lu_gp_member *lu_gp_mem; struct t10_alua_tg_pt_gp *tg_pt_gp; - struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; unsigned char *prod = &dev->t10_wwn.model[0]; u32 prod_len; u32 unit_serial_len, off = 0; @@ -267,18 +258,15 @@ check_t10_vend_desc: /* Header size for Designation descriptor */ len += (id_len + 4); off += (id_len + 4); - /* - * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD - */ - port = lun->lun_sep; - if (port) { + + if (1) { struct t10_alua_lu_gp *lu_gp; u32 padding, scsi_name_len, scsi_target_len; u16 lu_gp_id = 0; u16 tg_pt_gp_id = 0; u16 tpgt; - tpg = port->sep_tpg; + tpg = lun->lun_tpg; /* * Relative target port identifer, see spc4r17 * section 7.7.3.7 @@ -298,8 +286,8 @@ check_t10_vend_desc: /* Skip over Obsolete field in RTPI payload * in Table 472 */ off += 2; - buf[off++] = ((port->sep_rtpi >> 8) & 0xff); - buf[off++] = (port->sep_rtpi & 0xff); + buf[off++] = ((lun->lun_rtpi >> 8) & 0xff); + buf[off++] = (lun->lun_rtpi & 0xff); len += 8; /* Header size + Designation descriptor */ /* * Target port group identifier, see spc4r17 @@ -308,18 +296,14 @@ check_t10_vend_desc: * Get the PROTOCOL IDENTIFIER as defined by spc4r17 * section 7.5.1 Table 362 */ - tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; - if (!tg_pt_gp_mem) - goto check_lu_gp; - - spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); - tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; + spin_lock(&lun->lun_tg_pt_gp_lock); + tg_pt_gp = lun->lun_tg_pt_gp; if (!tg_pt_gp) { - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); goto check_lu_gp; } tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; - spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); + spin_unlock(&lun->lun_tg_pt_gp_lock); buf[off] = tpg->proto_id << 4; buf[off++] |= 0x1; /* CODE SET == Binary */ @@ -694,7 +678,7 @@ static sense_reason_t spc_emulate_inquiry(struct se_cmd *cmd) { struct se_device *dev = cmd->se_dev; - struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg; + struct se_portal_group *tpg = cmd->se_lun->lun_tpg; unsigned char *rbuf; unsigned char *cdb = cmd->t_task_cdb; unsigned char *buf; @@ -708,7 +692,7 @@ spc_emulate_inquiry(struct se_cmd *cmd) return TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE; } - if (dev == tpg->tpg_virt_lun0.lun_se_dev) + if (dev == tpg->tpg_virt_lun0->lun_se_dev) buf[0] = 0x3f; /* Not connected */ else buf[0] = dev->transport->get_device_type(dev); diff --git a/drivers/target/target_core_stat.c b/drivers/target/target_core_stat.c index ea1287940a7c..8e080efb0188 100644 --- a/drivers/target/target_core_stat.c +++ b/drivers/target/target_core_stat.c @@ -106,7 +106,7 @@ static ssize_t target_stat_scsi_dev_show_attr_ports( struct se_device *dev = container_of(sgrps, struct se_device, dev_stat_grps); - return snprintf(page, PAGE_SIZE, "%u\n", dev->dev_port_count); + return snprintf(page, PAGE_SIZE, "%u\n", dev->export_count); } DEV_STAT_SCSI_DEV_ATTR_RO(ports); @@ -542,19 +542,13 @@ static ssize_t target_stat_scsi_port_show_attr_inst( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - struct se_device *dev = lun->lun_se_dev; - struct se_hba *hba; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - hba = dev->se_hba; - ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -564,17 +558,13 @@ static ssize_t target_stat_scsi_port_show_attr_dev( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - struct se_device *dev = lun->lun_se_dev; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -584,16 +574,13 @@ static ssize_t target_stat_scsi_port_show_attr_indx( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_rtpi); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -603,20 +590,13 @@ static ssize_t target_stat_scsi_port_show_attr_role( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_device *dev = lun->lun_se_dev; - struct se_port *sep; - ssize_t ret; - - if (!dev) - return -ENODEV; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%s%u\n", "Device", dev->dev_index); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -626,17 +606,15 @@ static ssize_t target_stat_scsi_port_show_attr_busy_count( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; + dev = lun->lun_se_dev; + if (dev) { + /* FIXME: scsiPortBusyStatuses */ + ret = snprintf(page, PAGE_SIZE, "%u\n", 0); } - /* FIXME: scsiPortBusyStatuses */ - ret = snprintf(page, PAGE_SIZE, "%u\n", 0); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -685,19 +663,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_inst( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_device *dev = lun->lun_se_dev; - struct se_port *sep; - struct se_hba *hba; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - hba = dev->se_hba; - ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -707,17 +679,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_dev( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_device *dev = lun->lun_se_dev; - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", dev->dev_index); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -727,16 +695,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_indx( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - ret = snprintf(page, PAGE_SIZE, "%u\n", sep->sep_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_rtpi); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -746,20 +711,16 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_name( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - struct se_portal_group *tpg; - ssize_t ret; + struct se_portal_group *tpg = lun->lun_tpg; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - tpg = sep->sep_tpg; - - ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n", - tpg->se_tpg_tfo->get_fabric_name(), sep->sep_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%sPort#%u\n", + tpg->se_tpg_tfo->get_fabric_name(), + lun->lun_rtpi); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -769,21 +730,16 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_port_index( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - struct se_portal_group *tpg; - ssize_t ret; + struct se_portal_group *tpg = lun->lun_tpg; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - tpg = sep->sep_tpg; - - ret = snprintf(page, PAGE_SIZE, "%s%s%d\n", - tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+", - tpg->se_tpg_tfo->tpg_get_tag(tpg)); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%s%s%d\n", + tpg->se_tpg_tfo->tpg_get_wwn(tpg), "+t+", + tpg->se_tpg_tfo->tpg_get_tag(tpg)); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -793,17 +749,13 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_in_cmds( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - - ret = snprintf(page, PAGE_SIZE, "%llu\n", sep->sep_stats.cmd_pdus); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", lun->lun_stats.cmd_pdus); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -813,18 +765,14 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_write_mbytes( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - - ret = snprintf(page, PAGE_SIZE, "%u\n", - (u32)(sep->sep_stats.rx_data_octets >> 20)); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", + (u32)(lun->lun_stats.rx_data_octets >> 20)); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -834,18 +782,14 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_read_mbytes( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - - ret = snprintf(page, PAGE_SIZE, "%u\n", - (u32)(sep->sep_stats.tx_data_octets >> 20)); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", + (u32)(lun->lun_stats.tx_data_octets >> 20)); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -855,18 +799,15 @@ static ssize_t target_stat_scsi_tgt_port_show_attr_hs_in_cmds( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; + dev = lun->lun_se_dev; + if (dev) { + /* FIXME: scsiTgtPortHsInCommands */ + ret = snprintf(page, PAGE_SIZE, "%u\n", 0); } - - /* FIXME: scsiTgtPortHsInCommands */ - ret = snprintf(page, PAGE_SIZE, "%u\n", 0); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -921,20 +862,13 @@ static ssize_t target_stat_scsi_transport_show_attr_inst( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_device *dev = lun->lun_se_dev; - struct se_port *sep; - struct se_hba *hba; - ssize_t ret; + struct se_device *dev; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - - hba = dev->se_hba; - ret = snprintf(page, PAGE_SIZE, "%u\n", hba->hba_index); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", dev->se_hba->hba_index); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -944,20 +878,17 @@ static ssize_t target_stat_scsi_transport_show_attr_device( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - struct se_portal_group *tpg; - ssize_t ret; + struct se_device *dev; + struct se_portal_group *tpg = lun->lun_tpg; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; + dev = lun->lun_se_dev; + if (dev) { + /* scsiTransportType */ + ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n", + tpg->se_tpg_tfo->get_fabric_name()); } - tpg = sep->sep_tpg; - /* scsiTransportType */ - ret = snprintf(page, PAGE_SIZE, "scsiTransport%s\n", - tpg->se_tpg_tfo->get_fabric_name()); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -967,19 +898,15 @@ static ssize_t target_stat_scsi_transport_show_attr_indx( struct se_port_stat_grps *pgrps, char *page) { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); - struct se_port *sep; - struct se_portal_group *tpg; - ssize_t ret; + struct se_device *dev; + struct se_portal_group *tpg = lun->lun_tpg; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; - } - tpg = sep->sep_tpg; - ret = snprintf(page, PAGE_SIZE, "%u\n", - tpg->se_tpg_tfo->tpg_get_inst_index(tpg)); + dev = lun->lun_se_dev; + if (dev) + ret = snprintf(page, PAGE_SIZE, "%u\n", + tpg->se_tpg_tfo->tpg_get_inst_index(tpg)); spin_unlock(&lun->lun_sep_lock); return ret; } @@ -990,24 +917,20 @@ static ssize_t target_stat_scsi_transport_show_attr_dev_name( { struct se_lun *lun = container_of(pgrps, struct se_lun, port_stat_grps); struct se_device *dev = lun->lun_se_dev; - struct se_port *sep; - struct se_portal_group *tpg; + struct se_portal_group *tpg = lun->lun_tpg; struct t10_wwn *wwn; - ssize_t ret; + ssize_t ret = -ENODEV; spin_lock(&lun->lun_sep_lock); - sep = lun->lun_sep; - if (!sep) { - spin_unlock(&lun->lun_sep_lock); - return -ENODEV; + dev = lun->lun_se_dev; + if (dev) { + wwn = &dev->t10_wwn; + /* scsiTransportDevName */ + ret = snprintf(page, PAGE_SIZE, "%s+%s\n", + tpg->se_tpg_tfo->tpg_get_wwn(tpg), + (strlen(wwn->unit_serial)) ? wwn->unit_serial : + wwn->vendor); } - tpg = sep->sep_tpg; - wwn = &dev->t10_wwn; - /* scsiTransportDevName */ - ret = snprintf(page, PAGE_SIZE, "%s+%s\n", - tpg->se_tpg_tfo->tpg_get_wwn(tpg), - (strlen(wwn->unit_serial)) ? wwn->unit_serial : - wwn->vendor); spin_unlock(&lun->lun_sep_lock); return ret; } diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index fd531fcf3191..499b1399035a 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -40,6 +40,7 @@ #include <target/target_core_fabric.h> #include "target_core_internal.h" +#include "target_core_alua.h" #include "target_core_pr.h" extern struct se_device *g_lun0_dev; @@ -484,32 +485,14 @@ static void core_tpg_lun_ref_release(struct percpu_ref *ref) complete(&lun->lun_ref_comp); } -static int core_tpg_setup_virtual_lun0(struct se_portal_group *se_tpg) -{ - /* Set in core_dev_setup_virtual_lun0() */ - struct se_device *dev = g_lun0_dev; - struct se_lun *lun = &se_tpg->tpg_virt_lun0; - u32 lun_access = TRANSPORT_LUNFLAGS_READ_ONLY; - int ret; - - lun->unpacked_lun = 0; - atomic_set(&lun->lun_acl_count, 0); - spin_lock_init(&lun->lun_sep_lock); - init_completion(&lun->lun_ref_comp); - - ret = core_tpg_add_lun(se_tpg, lun, lun_access, dev); - if (ret < 0) - return ret; - - return 0; -} - int core_tpg_register( const struct target_core_fabric_ops *tfo, struct se_wwn *se_wwn, struct se_portal_group *se_tpg, int proto_id) { + int ret; + INIT_HLIST_HEAD(&se_tpg->tpg_lun_hlist); se_tpg->proto_id = proto_id; se_tpg->se_tpg_tfo = tfo; @@ -523,8 +506,16 @@ int core_tpg_register( mutex_init(&se_tpg->acl_node_mutex); if (se_tpg->proto_id >= 0) { - if (core_tpg_setup_virtual_lun0(se_tpg) < 0) - return -ENOMEM; + se_tpg->tpg_virt_lun0 = core_tpg_alloc_lun(se_tpg, 0); + if (IS_ERR(se_tpg->tpg_virt_lun0)) + return PTR_ERR(se_tpg->tpg_virt_lun0); + + ret = core_tpg_add_lun(se_tpg, se_tpg->tpg_virt_lun0, + TRANSPORT_LUNFLAGS_READ_ONLY, g_lun0_dev); + if (ret < 0) { + kfree(se_tpg->tpg_virt_lun0); + return ret; + } } spin_lock_bh(&tpg_lock); @@ -575,8 +566,10 @@ int core_tpg_deregister(struct se_portal_group *se_tpg) kfree(nacl); } - if (se_tpg->proto_id >= 0) - core_tpg_remove_lun(se_tpg, &se_tpg->tpg_virt_lun0); + if (se_tpg->proto_id >= 0) { + core_tpg_remove_lun(se_tpg, se_tpg->tpg_virt_lun0); + kfree_rcu(se_tpg->tpg_virt_lun0, rcu_head); + } return 0; } @@ -607,6 +600,15 @@ struct se_lun *core_tpg_alloc_lun( atomic_set(&lun->lun_acl_count, 0); spin_lock_init(&lun->lun_sep_lock); init_completion(&lun->lun_ref_comp); + INIT_LIST_HEAD(&lun->lun_deve_list); + INIT_LIST_HEAD(&lun->lun_dev_link); + atomic_set(&lun->lun_tg_pt_secondary_offline, 0); + spin_lock_init(&lun->lun_deve_lock); + mutex_init(&lun->lun_tg_pt_md_mutex); + INIT_LIST_HEAD(&lun->lun_tg_pt_gp_link); + spin_lock_init(&lun->lun_tg_pt_gp_lock); + atomic_set(&lun->lun_active, 0); + lun->lun_tpg = tpg; return lun; } @@ -622,21 +624,40 @@ int core_tpg_add_lun( ret = percpu_ref_init(&lun->lun_ref, core_tpg_lun_ref_release, 0, GFP_KERNEL); if (ret < 0) - return ret; + goto out; - ret = core_dev_export(dev, tpg, lun); - if (ret < 0) { - percpu_ref_exit(&lun->lun_ref); - return ret; - } + ret = core_alloc_rtpi(lun, dev); + if (ret) + goto out_kill_ref; + + if (!(dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) && + !(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) + target_attach_tg_pt_gp(lun, dev->t10_alua.default_tg_pt_gp); mutex_lock(&tpg->tpg_lun_mutex); + + spin_lock(&lun->lun_sep_lock); + lun->lun_index = dev->dev_index; + lun->lun_se_dev = dev; + spin_unlock(&lun->lun_sep_lock); + + spin_lock(&dev->se_port_lock); + rcu_assign_pointer(lun->lun_se_dev, dev); + dev->export_count++; + list_add_tail(&lun->lun_dev_link, &dev->dev_sep_list); + spin_unlock(&dev->se_port_lock); + lun->lun_access = lun_access; if (!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) hlist_add_head_rcu(&lun->link, &tpg->tpg_lun_hlist); mutex_unlock(&tpg->tpg_lun_mutex); return 0; + +out_kill_ref: + percpu_ref_exit(&lun->lun_ref); +out: + return ret; } void core_tpg_remove_lun( @@ -648,9 +669,19 @@ void core_tpg_remove_lun( core_clear_lun_from_tpg(lun, tpg); transport_clear_lun_ref(lun); - core_dev_unexport(lun->lun_se_dev, tpg, lun); - mutex_lock(&tpg->tpg_lun_mutex); + if (lun->lun_se_dev) { + while (atomic_read(&lun->lun_active)) + cpu_relax(); + + target_detach_tg_pt_gp(lun); + + spin_lock(&dev->se_port_lock); + list_del(&lun->lun_dev_link); + dev->export_count--; + rcu_assign_pointer(lun->lun_se_dev, NULL); + spin_unlock(&dev->se_port_lock); + } if (!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) hlist_del_rcu(&lun->link); mutex_unlock(&tpg->tpg_lun_mutex); diff --git a/drivers/target/target_core_transport.c b/drivers/target/target_core_transport.c index 7c0518a28186..ef6fdd8a47c4 100644 --- a/drivers/target/target_core_transport.c +++ b/drivers/target/target_core_transport.c @@ -60,7 +60,6 @@ struct kmem_cache *t10_pr_reg_cache; struct kmem_cache *t10_alua_lu_gp_cache; struct kmem_cache *t10_alua_lu_gp_mem_cache; struct kmem_cache *t10_alua_tg_pt_gp_cache; -struct kmem_cache *t10_alua_tg_pt_gp_mem_cache; struct kmem_cache *t10_alua_lba_map_cache; struct kmem_cache *t10_alua_lba_map_mem_cache; @@ -119,16 +118,6 @@ int init_se_kmem_caches(void) "cache failed\n"); goto out_free_lu_gp_mem_cache; } - t10_alua_tg_pt_gp_mem_cache = kmem_cache_create( - "t10_alua_tg_pt_gp_mem_cache", - sizeof(struct t10_alua_tg_pt_gp_member), - __alignof__(struct t10_alua_tg_pt_gp_member), - 0, NULL); - if (!t10_alua_tg_pt_gp_mem_cache) { - pr_err("kmem_cache_create() for t10_alua_tg_pt_gp_" - "mem_t failed\n"); - goto out_free_tg_pt_gp_cache; - } t10_alua_lba_map_cache = kmem_cache_create( "t10_alua_lba_map_cache", sizeof(struct t10_alua_lba_map), @@ -136,7 +125,7 @@ int init_se_kmem_caches(void) if (!t10_alua_lba_map_cache) { pr_err("kmem_cache_create() for t10_alua_lba_map_" "cache failed\n"); - goto out_free_tg_pt_gp_mem_cache; + goto out_free_tg_pt_gp_cache; } t10_alua_lba_map_mem_cache = kmem_cache_create( "t10_alua_lba_map_mem_cache", @@ -159,8 +148,6 @@ out_free_lba_map_mem_cache: kmem_cache_destroy(t10_alua_lba_map_mem_cache); out_free_lba_map_cache: kmem_cache_destroy(t10_alua_lba_map_cache); -out_free_tg_pt_gp_mem_cache: - kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache); out_free_tg_pt_gp_cache: kmem_cache_destroy(t10_alua_tg_pt_gp_cache); out_free_lu_gp_mem_cache: @@ -186,7 +173,6 @@ void release_se_kmem_caches(void) kmem_cache_destroy(t10_alua_lu_gp_cache); kmem_cache_destroy(t10_alua_lu_gp_mem_cache); kmem_cache_destroy(t10_alua_tg_pt_gp_cache); - kmem_cache_destroy(t10_alua_tg_pt_gp_mem_cache); kmem_cache_destroy(t10_alua_lba_map_cache); kmem_cache_destroy(t10_alua_lba_map_mem_cache); } @@ -1277,8 +1263,7 @@ target_setup_cmd_from_cdb(struct se_cmd *cmd, unsigned char *cdb) cmd->se_cmd_flags |= SCF_SUPPORTED_SAM_OPCODE; spin_lock(&cmd->se_lun->lun_sep_lock); - if (cmd->se_lun->lun_sep) - cmd->se_lun->lun_sep->sep_stats.cmd_pdus++; + cmd->se_lun->lun_stats.cmd_pdus++; spin_unlock(&cmd->se_lun->lun_sep_lock); return 0; } @@ -2076,10 +2061,7 @@ queue_rsp: switch (cmd->data_direction) { case DMA_FROM_DEVICE: spin_lock(&cmd->se_lun->lun_sep_lock); - if (cmd->se_lun->lun_sep) { - cmd->se_lun->lun_sep->sep_stats.tx_data_octets += - cmd->data_length; - } + cmd->se_lun->lun_stats.tx_data_octets += cmd->data_length; spin_unlock(&cmd->se_lun->lun_sep_lock); /* * Perform READ_STRIP of PI using software emulation when @@ -2104,20 +2086,14 @@ queue_rsp: break; case DMA_TO_DEVICE: spin_lock(&cmd->se_lun->lun_sep_lock); - if (cmd->se_lun->lun_sep) { - cmd->se_lun->lun_sep->sep_stats.rx_data_octets += - cmd->data_length; - } + cmd->se_lun->lun_stats.rx_data_octets += cmd->data_length; spin_unlock(&cmd->se_lun->lun_sep_lock); /* * Check if we need to send READ payload for BIDI-COMMAND */ if (cmd->se_cmd_flags & SCF_BIDI) { spin_lock(&cmd->se_lun->lun_sep_lock); - if (cmd->se_lun->lun_sep) { - cmd->se_lun->lun_sep->sep_stats.tx_data_octets += - cmd->data_length; - } + cmd->se_lun->lun_stats.tx_data_octets += cmd->data_length; spin_unlock(&cmd->se_lun->lun_sep_lock); ret = cmd->se_tfo->queue_data_in(cmd); if (ret == -EAGAIN || ret == -ENOMEM) diff --git a/drivers/target/target_core_xcopy.c b/drivers/target/target_core_xcopy.c index 3556a9dcee46..49111d39e795 100644 --- a/drivers/target/target_core_xcopy.c +++ b/drivers/target/target_core_xcopy.c @@ -348,8 +348,7 @@ struct xcopy_pt_cmd { unsigned char sense_buffer[TRANSPORT_SENSE_BUFFER]; }; -static struct se_port xcopy_pt_port; -static struct se_portal_group xcopy_pt_tpg; +struct se_portal_group xcopy_pt_tpg; static struct se_session xcopy_pt_sess; static struct se_node_acl xcopy_pt_nacl; @@ -439,17 +438,11 @@ int target_xcopy_setup_pt(void) return -ENOMEM; } - memset(&xcopy_pt_port, 0, sizeof(struct se_port)); - INIT_LIST_HEAD(&xcopy_pt_port.sep_alua_list); - INIT_LIST_HEAD(&xcopy_pt_port.sep_list); - mutex_init(&xcopy_pt_port.sep_tg_pt_md_mutex); - memset(&xcopy_pt_tpg, 0, sizeof(struct se_portal_group)); INIT_LIST_HEAD(&xcopy_pt_tpg.se_tpg_node); INIT_LIST_HEAD(&xcopy_pt_tpg.acl_node_list); INIT_LIST_HEAD(&xcopy_pt_tpg.tpg_sess_list); - xcopy_pt_port.sep_tpg = &xcopy_pt_tpg; xcopy_pt_tpg.se_tpg_tfo = &xcopy_pt_tfo; memset(&xcopy_pt_nacl, 0, sizeof(struct se_node_acl)); @@ -490,10 +483,6 @@ static void target_xcopy_setup_pt_port( */ if (remote_port) { xpt_cmd->remote_port = remote_port; - pt_cmd->se_lun->lun_sep = &xcopy_pt_port; - pr_debug("Setup emulated remote DEST xcopy_pt_port: %p to" - " cmd->se_lun->lun_sep for X-COPY data PUSH\n", - pt_cmd->se_lun->lun_sep); } else { pt_cmd->se_lun = ec_cmd->se_lun; pt_cmd->se_dev = ec_cmd->se_dev; @@ -513,10 +502,6 @@ static void target_xcopy_setup_pt_port( */ if (remote_port) { xpt_cmd->remote_port = remote_port; - pt_cmd->se_lun->lun_sep = &xcopy_pt_port; - pr_debug("Setup emulated remote SRC xcopy_pt_port: %p to" - " cmd->se_lun->lun_sep for X-COPY data PULL\n", - pt_cmd->se_lun->lun_sep); } else { pt_cmd->se_lun = ec_cmd->se_lun; pt_cmd->se_dev = ec_cmd->se_dev; diff --git a/include/target/target_core_base.h b/include/target/target_core_base.h index ee7abdd6b7a2..1927dd5947a7 100644 --- a/include/target/target_core_base.h +++ b/include/target/target_core_base.h @@ -304,22 +304,13 @@ struct t10_alua_tg_pt_gp { struct se_device *tg_pt_gp_dev; struct config_group tg_pt_gp_group; struct list_head tg_pt_gp_list; - struct list_head tg_pt_gp_mem_list; - struct se_port *tg_pt_gp_alua_port; + struct list_head tg_pt_gp_lun_list; + struct se_lun *tg_pt_gp_alua_lun; struct se_node_acl *tg_pt_gp_alua_nacl; struct delayed_work tg_pt_gp_transition_work; struct completion *tg_pt_gp_transition_complete; }; -struct t10_alua_tg_pt_gp_member { - bool tg_pt_gp_assoc; - atomic_t tg_pt_gp_mem_ref_cnt; - spinlock_t tg_pt_gp_mem_lock; - struct t10_alua_tg_pt_gp *tg_pt_gp; - struct se_port *tg_pt; - struct list_head tg_pt_gp_mem_list; -}; - struct t10_vpd { unsigned char device_identifier[INQUIRY_VPD_DEVICE_IDENTIFIER_LEN]; int protocol_identifier_set; @@ -650,6 +641,7 @@ struct se_dev_entry { #define DEF_PR_REG_ACTIVE 1 unsigned long deve_flags; struct list_head alua_port_list; + struct list_head lun_link; struct list_head ua_list; struct hlist_node link; struct rcu_head rcu_head; @@ -697,7 +689,14 @@ struct se_port_stat_grps { struct config_group scsi_transport_group; }; +struct scsi_port_stats { + u32 cmd_pdus; + u64 tx_data_octets; + u64 rx_data_octets; +}; + struct se_lun { + /* RELATIVE TARGET PORT IDENTIFER */ u16 lun_rtpi; #define SE_LUN_LINK_MAGIC 0xffff7771 u32 lun_link_magic; @@ -707,12 +706,30 @@ struct se_lun { u32 lun_index; atomic_t lun_acl_count; spinlock_t lun_sep_lock; - struct se_device *lun_se_dev; - struct se_port *lun_sep; + struct se_device __rcu *lun_se_dev; + + struct list_head lun_deve_list; + spinlock_t lun_deve_lock; + + /* ALUA state */ + int lun_tg_pt_secondary_stat; + int lun_tg_pt_secondary_write_md; + atomic_t lun_tg_pt_secondary_offline; + struct mutex lun_tg_pt_md_mutex; + + /* ALUA target port group linkage */ + struct list_head lun_tg_pt_gp_link; + struct t10_alua_tg_pt_gp *lun_tg_pt_gp; + spinlock_t lun_tg_pt_gp_lock; + + atomic_t lun_active; + struct se_portal_group *lun_tpg; + struct scsi_port_stats lun_stats; struct config_group lun_group; struct se_port_stat_grps port_stat_grps; struct completion lun_ref_comp; struct percpu_ref lun_ref; + struct list_head lun_dev_link; struct hlist_node link; struct rcu_head rcu_head; }; @@ -737,7 +754,6 @@ struct se_device { #define DF_EMULATED_VPD_UNIT_SERIAL 0x00000004 #define DF_USING_UDEV_PATH 0x00000008 #define DF_USING_ALIAS 0x00000010 - u32 dev_port_count; /* Physical device queue depth */ u32 queue_depth; /* Used for SPC-2 reservations enforce of ISIDs */ @@ -754,7 +770,7 @@ struct se_device { atomic_t dev_ordered_id; atomic_t dev_ordered_sync; atomic_t dev_qf_count; - int export_count; + u32 export_count; spinlock_t delayed_cmd_lock; spinlock_t execute_task_lock; spinlock_t dev_reservation_lock; @@ -821,32 +837,6 @@ struct se_hba { struct target_backend *backend; }; -struct scsi_port_stats { - u64 cmd_pdus; - u64 tx_data_octets; - u64 rx_data_octets; -}; - -struct se_port { - /* RELATIVE TARGET PORT IDENTIFER */ - u16 sep_rtpi; - int sep_tg_pt_secondary_stat; - int sep_tg_pt_secondary_write_md; - u32 sep_index; - struct scsi_port_stats sep_stats; - /* Used for ALUA Target Port Groups membership */ - atomic_t sep_tg_pt_secondary_offline; - /* Used for PR ALL_TG_PT=1 */ - atomic_t sep_tg_pt_ref_cnt; - spinlock_t sep_alua_lock; - struct mutex sep_tg_pt_md_mutex; - struct t10_alua_tg_pt_gp_member *sep_alua_tg_pt_gp_mem; - struct se_lun *sep_lun; - struct se_portal_group *sep_tpg; - struct list_head sep_alua_list; - struct list_head sep_list; -}; - struct se_tpg_np { struct se_portal_group *tpg_np_parent; struct config_group tpg_np_group; @@ -872,7 +862,7 @@ struct se_portal_group { /* linked list for initiator ACL list */ struct list_head acl_node_list; struct hlist_head tpg_lun_hlist; - struct se_lun tpg_virt_lun0; + struct se_lun *tpg_virt_lun0; /* List of TCM sessions associated wth this TPG */ struct list_head tpg_sess_list; /* Pointer to $FABRIC_MOD dependent code */ |