diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/target/iscsi/iscsi_target_tpg.c | 2 | ||||
| -rw-r--r-- | drivers/target/sbp/sbp_target.c | 97 | ||||
| -rw-r--r-- | drivers/target/sbp/sbp_target.h | 2 | ||||
| -rw-r--r-- | drivers/target/target_core_device.c | 92 | ||||
| -rw-r--r-- | drivers/target/target_core_fabric_configfs.c | 34 | ||||
| -rw-r--r-- | drivers/target/target_core_internal.h | 6 | ||||
| -rw-r--r-- | drivers/target/target_core_tpg.c | 132 | ||||
| -rw-r--r-- | drivers/xen/xen-scsiback.c | 27 |
8 files changed, 118 insertions, 274 deletions
diff --git a/drivers/target/iscsi/iscsi_target_tpg.c b/drivers/target/iscsi/iscsi_target_tpg.c index d4ac31fc2acd..de8829102ab4 100644 --- a/drivers/target/iscsi/iscsi_target_tpg.c +++ b/drivers/target/iscsi/iscsi_target_tpg.c @@ -278,8 +278,6 @@ int iscsit_tpg_del_portal_group( return -EPERM; } - core_tpg_clear_object_luns(&tpg->tpg_se_tpg); - if (tpg->param_list) { iscsi_release_param_list(tpg->param_list); tpg->param_list = NULL; diff --git a/drivers/target/sbp/sbp_target.c b/drivers/target/sbp/sbp_target.c index 5d7755edc668..47fb12fbaf47 100644 --- a/drivers/target/sbp/sbp_target.c +++ b/drivers/target/sbp/sbp_target.c @@ -108,13 +108,13 @@ static struct sbp_session *sbp_session_find_by_guid( } static struct sbp_login_descriptor *sbp_login_find_by_lun( - struct sbp_session *session, struct se_lun *lun) + struct sbp_session *session, u32 unpacked_lun) { struct sbp_login_descriptor *login, *found = NULL; spin_lock_bh(&session->lock); list_for_each_entry(login, &session->login_list, link) { - if (login->lun == lun) + if (login->login_lun == unpacked_lun) found = login; } spin_unlock_bh(&session->lock); @@ -124,7 +124,7 @@ static struct sbp_login_descriptor *sbp_login_find_by_lun( static int sbp_login_count_all_by_lun( struct sbp_tpg *tpg, - struct se_lun *lun, + u32 unpacked_lun, int exclusive) { struct se_session *se_sess; @@ -138,7 +138,7 @@ static int sbp_login_count_all_by_lun( spin_lock_bh(&sess->lock); list_for_each_entry(login, &sess->login_list, link) { - if (login->lun != lun) + if (login->login_lun != unpacked_lun) continue; if (!exclusive || login->exclusive) @@ -174,23 +174,23 @@ static struct sbp_login_descriptor *sbp_login_find_by_id( return found; } -static struct se_lun *sbp_get_lun_from_tpg(struct sbp_tpg *tpg, int lun) +static u32 sbp_get_lun_from_tpg(struct sbp_tpg *tpg, u32 login_lun, int *err) { struct se_portal_group *se_tpg = &tpg->se_tpg; struct se_lun *se_lun; - if (lun >= TRANSPORT_MAX_LUNS_PER_TPG) - return ERR_PTR(-EINVAL); - - spin_lock(&se_tpg->tpg_lun_lock); - se_lun = se_tpg->tpg_lun_list[lun]; - - if (se_lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) - se_lun = ERR_PTR(-ENODEV); - - spin_unlock(&se_tpg->tpg_lun_lock); + rcu_read_lock(); + hlist_for_each_entry_rcu(se_lun, &se_tpg->tpg_lun_hlist, link) { + if (se_lun->unpacked_lun == login_lun) { + rcu_read_unlock(); + *err = 0; + return login_lun; + } + } + rcu_read_unlock(); - return se_lun; + *err = -ENODEV; + return login_lun; } static struct sbp_session *sbp_session_create( @@ -294,17 +294,16 @@ static void sbp_management_request_login( { struct sbp_tport *tport = agent->tport; struct sbp_tpg *tpg = tport->tpg; - struct se_lun *se_lun; - int ret; - u64 guid; struct sbp_session *sess; struct sbp_login_descriptor *login; struct sbp_login_response_block *response; - int login_response_len; + u64 guid; + u32 unpacked_lun; + int login_response_len, ret; - se_lun = sbp_get_lun_from_tpg(tpg, - LOGIN_ORB_LUN(be32_to_cpu(req->orb.misc))); - if (IS_ERR(se_lun)) { + unpacked_lun = sbp_get_lun_from_tpg(tpg, + LOGIN_ORB_LUN(be32_to_cpu(req->orb.misc)), &ret); + if (ret) { pr_notice("login to unknown LUN: %d\n", LOGIN_ORB_LUN(be32_to_cpu(req->orb.misc))); @@ -325,11 +324,11 @@ static void sbp_management_request_login( } pr_notice("mgt_agent LOGIN to LUN %d from %016llx\n", - se_lun->unpacked_lun, guid); + unpacked_lun, guid); sess = sbp_session_find_by_guid(tpg, guid); if (sess) { - login = sbp_login_find_by_lun(sess, se_lun); + login = sbp_login_find_by_lun(sess, unpacked_lun); if (login) { pr_notice("initiator already logged-in\n"); @@ -357,7 +356,7 @@ static void sbp_management_request_login( * reject with access_denied if any logins present */ if (LOGIN_ORB_EXCLUSIVE(be32_to_cpu(req->orb.misc)) && - sbp_login_count_all_by_lun(tpg, se_lun, 0)) { + sbp_login_count_all_by_lun(tpg, unpacked_lun, 0)) { pr_warn("refusing exclusive login with other active logins\n"); req->status.status = cpu_to_be32( @@ -370,7 +369,7 @@ static void sbp_management_request_login( * check exclusive bit in any existing login descriptor * reject with access_denied if any exclusive logins present */ - if (sbp_login_count_all_by_lun(tpg, se_lun, 1)) { + if (sbp_login_count_all_by_lun(tpg, unpacked_lun, 1)) { pr_warn("refusing login while another exclusive login present\n"); req->status.status = cpu_to_be32( @@ -383,7 +382,7 @@ static void sbp_management_request_login( * check we haven't exceeded the number of allowed logins * reject with resources_unavailable if we have */ - if (sbp_login_count_all_by_lun(tpg, se_lun, 0) >= + if (sbp_login_count_all_by_lun(tpg, unpacked_lun, 0) >= tport->max_logins_per_lun) { pr_warn("max number of logins reached\n"); @@ -439,7 +438,7 @@ static void sbp_management_request_login( } login->sess = sess; - login->lun = se_lun; + login->login_lun = unpacked_lun; login->status_fifo_addr = sbp2_pointer_to_addr(&req->orb.status_fifo); login->exclusive = LOGIN_ORB_EXCLUSIVE(be32_to_cpu(req->orb.misc)); login->login_id = atomic_inc_return(&login_id); @@ -601,7 +600,7 @@ static void sbp_management_request_logout( } pr_info("mgt_agent LOGOUT from LUN %d session %d\n", - login->lun->unpacked_lun, login->login_id); + login->login_lun, login->login_id); if (req->node_addr != login->sess->node_id) { pr_warn("logout from different node ID\n"); @@ -1227,7 +1226,7 @@ static void sbp_handle_command(struct sbp_target_request *req) goto err; } - unpacked_lun = req->login->lun->unpacked_lun; + unpacked_lun = req->login->login_lun; sbp_calc_data_length_direction(req, &data_length, &data_dir); pr_debug("sbp_handle_command ORB:0x%llx unpacked_lun:%d data_len:%d data_dir:%d\n", @@ -1826,25 +1825,21 @@ static int sbp_check_stop_free(struct se_cmd *se_cmd) static int sbp_count_se_tpg_luns(struct se_portal_group *tpg) { - int i, count = 0; - - spin_lock(&tpg->tpg_lun_lock); - for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - struct se_lun *se_lun = tpg->tpg_lun_list[i]; - - if (se_lun->lun_status == TRANSPORT_LUN_STATUS_FREE) - continue; + struct se_lun *lun; + int count = 0; + rcu_read_lock(); + hlist_for_each_entry_rcu(lun, &tpg->tpg_lun_hlist, link) count++; - } - spin_unlock(&tpg->tpg_lun_lock); + rcu_read_unlock(); return count; } static int sbp_update_unit_directory(struct sbp_tport *tport) { - int num_luns, num_entries, idx = 0, mgt_agt_addr, ret, i; + struct se_lun *lun; + int num_luns, num_entries, idx = 0, mgt_agt_addr, ret; u32 *data; if (tport->unit_directory.data) { @@ -1906,28 +1901,20 @@ static int sbp_update_unit_directory(struct sbp_tport *tport) /* unit unique ID (leaf is just after LUNs) */ data[idx++] = 0x8d000000 | (num_luns + 1); - spin_lock(&tport->tpg->se_tpg.tpg_lun_lock); - for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - struct se_lun *se_lun = tport->tpg->se_tpg.tpg_lun_list[i]; + rcu_read_lock(); + hlist_for_each_entry_rcu(lun, &tport->tpg->se_tpg.tpg_lun_hlist, link) { struct se_device *dev; int type; - if (se_lun->lun_status == TRANSPORT_LUN_STATUS_FREE) - continue; - - spin_unlock(&tport->tpg->se_tpg.tpg_lun_lock); - - dev = se_lun->lun_se_dev; + dev = lun->lun_se_dev; type = dev->transport->get_device_type(dev); /* logical_unit_number */ data[idx++] = 0x14000000 | ((type << 16) & 0x1f0000) | - (se_lun->unpacked_lun & 0xffff); - - spin_lock(&tport->tpg->se_tpg.tpg_lun_lock); + (lun->unpacked_lun & 0xffff); } - spin_unlock(&tport->tpg->se_tpg.tpg_lun_lock); + rcu_read_unlock(); /* unit unique ID leaf */ data[idx++] = 2 << 16; diff --git a/drivers/target/sbp/sbp_target.h b/drivers/target/sbp/sbp_target.h index e1b0b84f7379..73bcb1208832 100644 --- a/drivers/target/sbp/sbp_target.h +++ b/drivers/target/sbp/sbp_target.h @@ -125,7 +125,7 @@ struct sbp_login_descriptor { struct sbp_session *sess; struct list_head link; - struct se_lun *lun; + u32 login_lun; u64 status_fifo_addr; int exclusive; diff --git a/drivers/target/target_core_device.c b/drivers/target/target_core_device.c index 97792cc81fe4..431e5fc8daec 100644 --- a/drivers/target/target_core_device.c +++ b/drivers/target/target_core_device.c @@ -1172,22 +1172,17 @@ int se_dev_set_block_size(struct se_device *dev, u32 block_size) } EXPORT_SYMBOL(se_dev_set_block_size); -struct se_lun *core_dev_add_lun( +int core_dev_add_lun( struct se_portal_group *tpg, struct se_device *dev, - u32 unpacked_lun) + struct se_lun *lun) { - struct se_lun *lun; int rc; - lun = core_tpg_alloc_lun(tpg, unpacked_lun); - if (IS_ERR(lun)) - return lun; - rc = core_tpg_add_lun(tpg, lun, TRANSPORT_LUNFLAGS_READ_WRITE, dev); if (rc < 0) - return ERR_PTR(rc); + return rc; pr_debug("%s_TPG[%u]_LUN[%u] - Activated %s Logical Unit from" " CORE HBA: %u\n", tpg->se_tpg_tfo->get_fabric_name(), @@ -1212,7 +1207,7 @@ struct se_lun *core_dev_add_lun( spin_unlock_irq(&tpg->acl_node_lock); } - return lun; + return 0; } /* core_dev_del_lun(): @@ -1231,68 +1226,6 @@ void core_dev_del_lun( core_tpg_remove_lun(tpg, lun); } -struct se_lun *core_get_lun_from_tpg(struct se_portal_group *tpg, u32 unpacked_lun) -{ - struct se_lun *lun; - - spin_lock(&tpg->tpg_lun_lock); - if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { - pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS" - "_PER_TPG-1: %u for Target Portal Group: %hu\n", - tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, - TRANSPORT_MAX_LUNS_PER_TPG-1, - tpg->se_tpg_tfo->tpg_get_tag(tpg)); - spin_unlock(&tpg->tpg_lun_lock); - return NULL; - } - lun = tpg->tpg_lun_list[unpacked_lun]; - - if (lun->lun_status != TRANSPORT_LUN_STATUS_FREE) { - pr_err("%s Logical Unit Number: %u is not free on" - " Target Portal Group: %hu, ignoring request.\n", - tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, - tpg->se_tpg_tfo->tpg_get_tag(tpg)); - spin_unlock(&tpg->tpg_lun_lock); - return NULL; - } - spin_unlock(&tpg->tpg_lun_lock); - - return lun; -} - -/* core_dev_get_lun(): - * - * - */ -static struct se_lun *core_dev_get_lun(struct se_portal_group *tpg, u32 unpacked_lun) -{ - struct se_lun *lun; - - spin_lock(&tpg->tpg_lun_lock); - if (unpacked_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) { - pr_err("%s LUN: %u exceeds TRANSPORT_MAX_LUNS_PER" - "_TPG-1: %u for Target Portal Group: %hu\n", - tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, - TRANSPORT_MAX_LUNS_PER_TPG-1, - tpg->se_tpg_tfo->tpg_get_tag(tpg)); - spin_unlock(&tpg->tpg_lun_lock); - return NULL; - } - lun = tpg->tpg_lun_list[unpacked_lun]; - - if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) { - pr_err("%s Logical Unit Number: %u is not active on" - " Target Portal Group: %hu, ignoring request.\n", - tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, - tpg->se_tpg_tfo->tpg_get_tag(tpg)); - spin_unlock(&tpg->tpg_lun_lock); - return NULL; - } - spin_unlock(&tpg->tpg_lun_lock); - - return lun; -} - struct se_lun_acl *core_dev_init_initiator_node_lun_acl( struct se_portal_group *tpg, struct se_node_acl *nacl, @@ -1326,22 +1259,11 @@ struct se_lun_acl *core_dev_init_initiator_node_lun_acl( int core_dev_add_initiator_node_lun_acl( struct se_portal_group *tpg, struct se_lun_acl *lacl, - u32 unpacked_lun, + struct se_lun *lun, u32 lun_access) { - struct se_lun *lun; - struct se_node_acl *nacl; + struct se_node_acl *nacl = lacl->se_lun_nacl; - lun = core_dev_get_lun(tpg, unpacked_lun); - if (!lun) { - pr_err("%s Logical Unit Number: %u is not active on" - " Target Portal Group: %hu, ignoring request.\n", - tpg->se_tpg_tfo->get_fabric_name(), unpacked_lun, - tpg->se_tpg_tfo->tpg_get_tag(tpg)); - return -EINVAL; - } - - nacl = lacl->se_lun_nacl; if (!nacl) return -EINVAL; @@ -1362,7 +1284,7 @@ int core_dev_add_initiator_node_lun_acl( pr_debug("%s_TPG[%hu]_LUN[%u->%u] - Added %s ACL for " " InitiatorNode: %s\n", tpg->se_tpg_tfo->get_fabric_name(), - tpg->se_tpg_tfo->tpg_get_tag(tpg), unpacked_lun, lacl->mapped_lun, + tpg->se_tpg_tfo->tpg_get_tag(tpg), lun->unpacked_lun, lacl->mapped_lun, (lun_access & TRANSPORT_LUNFLAGS_READ_WRITE) ? "RW" : "RO", lacl->initiatorname); /* diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c index 0939a5492c16..9be8030e016f 100644 --- a/drivers/target/target_core_fabric_configfs.c +++ b/drivers/target/target_core_fabric_configfs.c @@ -81,7 +81,7 @@ static int target_fabric_mappedlun_link( struct se_lun_acl, se_lun_group); struct se_portal_group *se_tpg; struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s; - int ret = 0, lun_access; + int lun_access; if (lun->lun_link_magic != SE_LUN_LINK_MAGIC) { pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:" @@ -137,12 +137,9 @@ static int target_fabric_mappedlun_link( * Determine the actual mapped LUN value user wants.. * * This value is what the SCSI Initiator actually sees the - * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports. + * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports. */ - ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl, - lun->unpacked_lun, lun_access); - - return (ret < 0) ? -EINVAL : 0; + return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access); } static int target_fabric_mappedlun_unlink( @@ -761,7 +758,6 @@ static int target_fabric_port_link( struct config_item *tpg_ci; struct se_lun *lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group); - struct se_lun *lun_p; struct se_portal_group *se_tpg; struct se_device *dev = container_of(to_config_group(se_dev_ci), struct se_device, dev_group); @@ -789,10 +785,9 @@ static int target_fabric_port_link( return -EEXIST; } - lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun); - if (IS_ERR(lun_p)) { - pr_err("core_dev_add_lun() failed\n"); - ret = PTR_ERR(lun_p); + ret = core_dev_add_lun(se_tpg, dev, lun); + if (ret) { + pr_err("core_dev_add_lun() failed: %d\n", ret); goto out; } @@ -832,9 +827,18 @@ static int target_fabric_port_unlink( return 0; } +static void target_fabric_port_release(struct config_item *item) +{ + struct se_lun *lun = container_of(to_config_group(item), + struct se_lun, lun_group); + + kfree_rcu(lun, rcu_head); +} + static struct configfs_item_operations target_fabric_port_item_ops = { .show_attribute = target_fabric_port_attr_show, .store_attribute = target_fabric_port_attr_store, + .release = target_fabric_port_release, .allow_link = target_fabric_port_link, .drop_link = target_fabric_port_unlink, }; @@ -893,15 +897,16 @@ static struct config_group *target_fabric_make_lun( if (unpacked_lun > UINT_MAX) return ERR_PTR(-EINVAL); - lun = core_get_lun_from_tpg(se_tpg, unpacked_lun); - if (!lun) - return ERR_PTR(-EINVAL); + lun = core_tpg_alloc_lun(se_tpg, unpacked_lun); + if (IS_ERR(lun)) + return ERR_CAST(lun); lun_cg = &lun->lun_group; lun_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, GFP_KERNEL); if (!lun_cg->default_groups) { pr_err("Unable to allocate lun_cg->default_groups\n"); + kfree(lun); return ERR_PTR(-ENOMEM); } @@ -918,6 +923,7 @@ static struct config_group *target_fabric_make_lun( if (!port_stat_grp->default_groups) { pr_err("Unable to allocate port_stat_grp->default_groups\n"); kfree(lun_cg->default_groups); + kfree(lun); return ERR_PTR(-ENOMEM); } target_stat_setup_port_default_groups(lun); diff --git a/drivers/target/target_core_internal.h b/drivers/target/target_core_internal.h index a04a6e396ae3..2c160ceaf03f 100644 --- a/drivers/target/target_core_internal.h +++ b/drivers/target/target_core_internal.h @@ -23,13 +23,13 @@ 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 *); -struct se_lun *core_dev_add_lun(struct se_portal_group *, struct se_device *, u32); +int core_dev_add_lun(struct se_portal_group *, struct se_device *, + struct se_lun *lun); void core_dev_del_lun(struct se_portal_group *, struct se_lun *); -struct se_lun *core_get_lun_from_tpg(struct se_portal_group *, u32); 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 *, u32, u32); + 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 *); void core_dev_free_initiator_node_lun_acl(struct se_portal_group *, diff --git a/drivers/target/target_core_tpg.c b/drivers/target/target_core_tpg.c index 0519923ef930..13d34e22a3c4 100644 --- a/drivers/target/target_core_tpg.c +++ b/drivers/target/target_core_tpg.c @@ -91,19 +91,15 @@ void core_tpg_add_node_to_devs( struct se_node_acl *acl, struct se_portal_group *tpg) { - int i = 0; u32 lun_access = 0; struct se_lun *lun; struct se_device *dev; - spin_lock(&tpg->tpg_lun_lock); - for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - lun = tpg->tpg_lun_list[i]; + mutex_lock(&tpg->tpg_lun_mutex); + hlist_for_each_entry_rcu(lun, &tpg->tpg_lun_hlist, link) { if (lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) continue; - spin_unlock(&tpg->tpg_lun_lock); - dev = lun->lun_se_dev; /* * By default in LIO-Target $FABRIC_MOD, @@ -130,7 +126,7 @@ void core_tpg_add_node_to_devs( "READ-WRITE" : "READ-ONLY"); core_enable_device_list_for_node(lun, NULL, lun->unpacked_lun, - lun_access, acl, tpg); + lun_access, acl, tpg); /* * Check to see if there are any existing persistent reservation * APTPL pre-registrations that need to be enabled for this dynamic @@ -138,9 +134,8 @@ void core_tpg_add_node_to_devs( */ core_scsi3_check_aptpl_registration(dev, tpg, lun, acl, lun->unpacked_lun); - spin_lock(&tpg->tpg_lun_lock); } - spin_unlock(&tpg->tpg_lun_lock); + mutex_unlock(&tpg->tpg_lun_mutex); } /* core_set_queue_depth_for_node(): @@ -161,34 +156,6 @@ static int core_set_queue_depth_for_node( return 0; } -void array_free(void *array, int n) -{ - void **a = array; - int i; - - for (i = 0; i < n; i++) - kfree(a[i]); - kfree(a); -} - -static void *array_zalloc(int n, size_t size, gfp_t flags) -{ - void **a; - int i; - - a = kzalloc(n * sizeof(void*), flags); - if (!a) - return NULL; - for (i = 0; i < n; i++) { - a[i] = kzalloc(size, flags); - if (!a[i]) { - array_free(a, n); - return NULL; - } - } - return a; -} - static struct se_node_acl *target_alloc_node_acl(struct se_portal_group *tpg, const unsigned char *initiatorname) { @@ -284,27 +251,6 @@ void core_tpg_wait_for_nacl_pr_ref(struct se_node_acl *nacl) cpu_relax(); } -void core_tpg_clear_object_luns(struct se_portal_group *tpg) -{ - int i; - struct se_lun *lun; - - spin_lock(&tpg->tpg_lun_lock); - for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - lun = tpg->tpg_lun_list[i]; - - if ((lun->lun_status != TRANSPORT_LUN_STATUS_ACTIVE) || - (lun->lun_se_dev == NULL)) - continue; - - spin_unlock(&tpg->tpg_lun_lock); - core_dev_del_lun(tpg, lun); - spin_lock(&tpg->tpg_lun_lock); - } - spin_unlock(&tpg->tpg_lun_lock); -} -EXPORT_SYMBOL(core_tpg_clear_object_luns); - struct se_node_acl *core_tpg_add_initiator_node_acl( struct se_portal_group *tpg, const char *initiatorname) @@ -567,30 +513,7 @@ int core_tpg_register( struct se_portal_group *se_tpg, int proto_id) { - struct se_lun *lun; - u32 i; - - se_tpg->tpg_lun_list = array_zalloc(TRANSPORT_MAX_LUNS_PER_TPG, - sizeof(struct se_lun), GFP_KERNEL); - if (!se_tpg->tpg_lun_list) { - pr_err("Unable to allocate struct se_portal_group->" - "tpg_lun_list\n"); - return -ENOMEM; - } - - for (i = 0; i < TRANSPORT_MAX_LUNS_PER_TPG; i++) { - lun = se_tpg->tpg_lun_list[i]; - lun->unpacked_lun = i; - lun->lun_link_magic = SE_LUN_LINK_MAGIC; - lun->lun_status = TRANSPORT_LUN_STATUS_FREE; - atomic_set(&lun->lun_acl_count, 0); - init_completion(&lun->lun_shutdown_comp); - INIT_LIST_HEAD(&lun->lun_acl_list); - spin_lock_init(&lun->lun_acl_lock); - spin_lock_init(&lun->lun_sep_lock); - init_completion(&lun->lun_ref_comp); - } - + INIT_HLIST_HEAD(&se_tpg->tpg_lun_hlist); se_tpg->proto_id = proto_id; se_tpg->se_tpg_tfo = tfo; se_tpg->se_tpg_wwn = se_wwn; @@ -600,14 +523,11 @@ int core_tpg_register( INIT_LIST_HEAD(&se_tpg->tpg_sess_list); spin_lock_init(&se_tpg->acl_node_lock); spin_lock_init(&se_tpg->session_lock); - spin_lock_init(&se_tpg->tpg_lun_lock); + mutex_init(&se_tpg->tpg_lun_mutex); if (se_tpg->proto_id >= 0) { - if (core_tpg_setup_virtual_lun0(se_tpg) < 0) { - array_free(se_tpg->tpg_lun_list, - TRANSPORT_MAX_LUNS_PER_TPG); + if (core_tpg_setup_virtual_lun0(se_tpg) < 0) return -ENOMEM; - } } spin_lock_bh(&tpg_lock); @@ -662,7 +582,6 @@ int core_tpg_deregister(struct se_portal_group *se_tpg) if (se_tpg->proto_id >= 0) core_tpg_remove_lun(se_tpg, &se_tpg->tpg_virt_lun0); - array_free(se_tpg->tpg_lun_list, TRANSPORT_MAX_LUNS_PER_TPG); return 0; } EXPORT_SYMBOL(core_tpg_deregister); @@ -682,17 +601,20 @@ struct se_lun *core_tpg_alloc_lun( return ERR_PTR(-EOVERFLOW); } - spin_lock(&tpg->tpg_lun_lock); - lun = tpg->tpg_lun_list[unpacked_lun]; - if (lun->lun_status == TRANSPORT_LUN_STATUS_ACTIVE) { - pr_err("TPG Logical Unit Number: %u is already active" - " on %s Target Portal Group: %u, ignoring request.\n", - unpacked_lun, tpg->se_tpg_tfo->get_fabric_name(), - tpg->se_tpg_tfo->tpg_get_tag(tpg)); - spin_unlock(&tpg->tpg_lun_lock); - return ERR_PTR(-EINVAL); + lun = kzalloc(sizeof(*lun), GFP_KERNEL); + if (!lun) { + pr_err("Unable to allocate se_lun memory\n"); + return ERR_PTR(-ENOMEM); } - spin_unlock(&tpg->tpg_lun_lock); + lun->unpacked_lun = unpacked_lun; + lun->lun_link_magic = SE_LUN_LINK_MAGIC; + lun->lun_status = TRANSPORT_LUN_STATUS_FREE; + atomic_set(&lun->lun_acl_count, 0); + init_completion(&lun->lun_shutdown_comp); + INIT_LIST_HEAD(&lun->lun_acl_list); + spin_lock_init(&lun->lun_acl_lock); + spin_lock_init(&lun->lun_sep_lock); + init_completion(&lun->lun_ref_comp); return lun; } @@ -716,10 +638,12 @@ int core_tpg_add_lun( return ret; } - spin_lock(&tpg->tpg_lun_lock); + mutex_lock(&tpg->tpg_lun_mutex); lun->lun_access = lun_access; lun->lun_status = TRANSPORT_LUN_STATUS_ACTIVE; - spin_unlock(&tpg->tpg_lun_lock); + 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; } @@ -728,14 +652,18 @@ void core_tpg_remove_lun( struct se_portal_group *tpg, struct se_lun *lun) { + struct se_device *dev = lun->lun_se_dev; + core_clear_lun_from_tpg(lun, tpg); transport_clear_lun_ref(lun); core_dev_unexport(lun->lun_se_dev, tpg, lun); - spin_lock(&tpg->tpg_lun_lock); + mutex_lock(&tpg->tpg_lun_mutex); lun->lun_status = TRANSPORT_LUN_STATUS_FREE; - spin_unlock(&tpg->tpg_lun_lock); + if (!(dev->se_hba->hba_flags & HBA_FLAGS_INTERNAL_USE)) + hlist_del_rcu(&lun->link); + mutex_unlock(&tpg->tpg_lun_mutex); percpu_ref_exit(&lun->lun_ref); } diff --git a/drivers/xen/xen-scsiback.c b/drivers/xen/xen-scsiback.c index 8b7dd47abd8d..555033bd9239 100644 --- a/drivers/xen/xen-scsiback.c +++ b/drivers/xen/xen-scsiback.c @@ -866,7 +866,8 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info, struct list_head *head = &(info->v2p_entry_lists); unsigned long flags; char *lunp; - unsigned int lun; + unsigned int unpacked_lun; + struct se_lun *se_lun; struct scsiback_tpg *tpg_entry, *tpg = NULL; char *error = "doesn't exist"; @@ -877,7 +878,7 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info, } *lunp = 0; lunp++; - if (kstrtouint(lunp, 10, &lun) || lun >= TRANSPORT_MAX_LUNS_PER_TPG) { + if (kstrtouint(lunp, 10, &unpacked_lun) || unpacked_lun >= TRANSPORT_MAX_LUNS_PER_TPG) { pr_err("lun number not valid: %s\n", lunp); return -EINVAL; } @@ -886,15 +887,17 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info, list_for_each_entry(tpg_entry, &scsiback_list, tv_tpg_list) { if (!strcmp(phy, tpg_entry->tport->tport_name) || !strcmp(phy, tpg_entry->param_alias)) { - spin_lock(&tpg_entry->se_tpg.tpg_lun_lock); - if (tpg_entry->se_tpg.tpg_lun_list[lun]->lun_status == - TRANSPORT_LUN_STATUS_ACTIVE) { - if (!tpg_entry->tpg_nexus) - error = "nexus undefined"; - else - tpg = tpg_entry; + mutex_lock(&tpg_entry->se_tpg.tpg_lun_mutex); + hlist_for_each_entry(se_lun, &tpg_entry->se_tpg.tpg_lun_hlist, link) { + if (se_lun->unpacked_lun == unpacked_lun) { + if (!tpg_entry->tpg_nexus) + error = "nexus undefined"; + else + tpg = tpg_entry; + break; + } } - spin_unlock(&tpg_entry->se_tpg.tpg_lun_lock); + mutex_unlock(&tpg_entry->se_tpg.tpg_lun_mutex); break; } } @@ -906,7 +909,7 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info, mutex_unlock(&scsiback_mutex); if (!tpg) { - pr_err("%s:%d %s\n", phy, lun, error); + pr_err("%s:%d %s\n", phy, unpacked_lun, error); return -ENODEV; } @@ -934,7 +937,7 @@ static int scsiback_add_translation_entry(struct vscsibk_info *info, kref_init(&new->kref); new->v = *v; new->tpg = tpg; - new->lun = lun; + new->lun = unpacked_lun; list_add_tail(&new->l, head); out: |