diff options
Diffstat (limited to 'drivers/nvme/target/configfs.c')
| -rw-r--r-- | drivers/nvme/target/configfs.c | 229 |
1 files changed, 214 insertions, 15 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 2482a0db2504..e44ef69dffc2 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -37,6 +37,7 @@ static struct nvmet_type_name_map nvmet_transport[] = { { NVMF_TRTYPE_RDMA, "rdma" }, { NVMF_TRTYPE_FC, "fc" }, { NVMF_TRTYPE_TCP, "tcp" }, + { NVMF_TRTYPE_PCI, "pci" }, { NVMF_TRTYPE_LOOP, "loop" }, }; @@ -46,6 +47,7 @@ static const struct nvmet_type_name_map nvmet_addr_family[] = { { NVMF_ADDR_FAMILY_IP6, "ipv6" }, { NVMF_ADDR_FAMILY_IB, "ib" }, { NVMF_ADDR_FAMILY_FC, "fc" }, + { NVMF_ADDR_FAMILY_PCI, "pci" }, { NVMF_ADDR_FAMILY_LOOP, "loop" }, }; @@ -273,6 +275,32 @@ static ssize_t nvmet_param_inline_data_size_store(struct config_item *item, CONFIGFS_ATTR(nvmet_, param_inline_data_size); +static ssize_t nvmet_param_max_queue_size_show(struct config_item *item, + char *page) +{ + struct nvmet_port *port = to_nvmet_port(item); + + return snprintf(page, PAGE_SIZE, "%d\n", port->max_queue_size); +} + +static ssize_t nvmet_param_max_queue_size_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_port *port = to_nvmet_port(item); + int ret; + + if (nvmet_is_port_enabled(port, __func__)) + return -EACCES; + ret = kstrtoint(page, 0, &port->max_queue_size); + if (ret) { + pr_err("Invalid value '%s' for max_queue_size\n", page); + return -EINVAL; + } + return count; +} + +CONFIGFS_ATTR(nvmet_, param_max_queue_size); + #ifdef CONFIG_BLK_DEV_INTEGRITY static ssize_t nvmet_param_pi_enable_show(struct config_item *item, char *page) @@ -384,7 +412,29 @@ static ssize_t nvmet_addr_tsas_show(struct config_item *item, return sprintf(page, "%s\n", nvmet_addr_tsas_rdma[i].name); } } - return sprintf(page, "reserved\n"); + return sprintf(page, "\n"); +} + +static u8 nvmet_addr_tsas_rdma_store(const char *page) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(nvmet_addr_tsas_rdma); i++) { + if (sysfs_streq(page, nvmet_addr_tsas_rdma[i].name)) + return nvmet_addr_tsas_rdma[i].type; + } + return NVMF_RDMA_QPTYPE_INVALID; +} + +static u8 nvmet_addr_tsas_tcp_store(const char *page) +{ + int i; + + for (i = 0; i < ARRAY_SIZE(nvmet_addr_tsas_tcp); i++) { + if (sysfs_streq(page, nvmet_addr_tsas_tcp[i].name)) + return nvmet_addr_tsas_tcp[i].type; + } + return NVMF_TCP_SECTYPE_INVALID; } static ssize_t nvmet_addr_tsas_store(struct config_item *item, @@ -392,20 +442,19 @@ static ssize_t nvmet_addr_tsas_store(struct config_item *item, { struct nvmet_port *port = to_nvmet_port(item); u8 treq = nvmet_port_disc_addr_treq_mask(port); - u8 sectype; - int i; + u8 sectype, qptype; if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - if (port->disc_addr.trtype != NVMF_TRTYPE_TCP) - return -EINVAL; - - for (i = 0; i < ARRAY_SIZE(nvmet_addr_tsas_tcp); i++) { - if (sysfs_streq(page, nvmet_addr_tsas_tcp[i].name)) { - sectype = nvmet_addr_tsas_tcp[i].type; + if (port->disc_addr.trtype == NVMF_TRTYPE_RDMA) { + qptype = nvmet_addr_tsas_rdma_store(page); + if (qptype == port->disc_addr.tsas.rdma.qptype) + return count; + } else if (port->disc_addr.trtype == NVMF_TRTYPE_TCP) { + sectype = nvmet_addr_tsas_tcp_store(page); + if (sectype != NVMF_TCP_SECTYPE_INVALID) goto found; - } } pr_err("Invalid value '%s' for tsas\n", page); @@ -650,10 +699,18 @@ static ssize_t nvmet_ns_enable_store(struct config_item *item, if (kstrtobool(page, &enable)) return -EINVAL; + /* + * take a global nvmet_config_sem because the disable routine has a + * window where it releases the subsys-lock, giving a chance to + * a parallel enable to concurrently execute causing the disable to + * have a misaccounting of the ns percpu_ref. + */ + down_write(&nvmet_config_sem); if (enable) ret = nvmet_ns_enable(ns); else nvmet_ns_disable(ns); + up_write(&nvmet_config_sem); return ret ? ret : count; } @@ -714,6 +771,32 @@ static ssize_t nvmet_ns_revalidate_size_store(struct config_item *item, CONFIGFS_ATTR_WO(nvmet_ns_, revalidate_size); +static ssize_t nvmet_ns_resv_enable_show(struct config_item *item, char *page) +{ + return sysfs_emit(page, "%d\n", to_nvmet_ns(item)->pr.enable); +} + +static ssize_t nvmet_ns_resv_enable_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_ns *ns = to_nvmet_ns(item); + bool val; + + if (kstrtobool(page, &val)) + return -EINVAL; + + mutex_lock(&ns->subsys->lock); + if (ns->enabled) { + pr_err("the ns:%d is already enabled.\n", ns->nsid); + mutex_unlock(&ns->subsys->lock); + return -EINVAL; + } + ns->pr.enable = val; + mutex_unlock(&ns->subsys->lock); + return count; +} +CONFIGFS_ATTR(nvmet_ns_, resv_enable); + static struct configfs_attribute *nvmet_ns_attrs[] = { &nvmet_ns_attr_device_path, &nvmet_ns_attr_device_nguid, @@ -722,6 +805,7 @@ static struct configfs_attribute *nvmet_ns_attrs[] = { &nvmet_ns_attr_enable, &nvmet_ns_attr_buffered_io, &nvmet_ns_attr_revalidate_size, + &nvmet_ns_attr_resv_enable, #ifdef CONFIG_PCI_P2PDMA &nvmet_ns_attr_p2pmem, #endif @@ -1318,6 +1402,49 @@ out_unlock: } CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_max); +static ssize_t nvmet_subsys_attr_vendor_id_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "0x%x\n", to_subsys(item)->vendor_id); +} + +static ssize_t nvmet_subsys_attr_vendor_id_store(struct config_item *item, + const char *page, size_t count) +{ + u16 vid; + + if (kstrtou16(page, 0, &vid)) + return -EINVAL; + + down_write(&nvmet_config_sem); + to_subsys(item)->vendor_id = vid; + up_write(&nvmet_config_sem); + return count; +} +CONFIGFS_ATTR(nvmet_subsys_, attr_vendor_id); + +static ssize_t nvmet_subsys_attr_subsys_vendor_id_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "0x%x\n", + to_subsys(item)->subsys_vendor_id); +} + +static ssize_t nvmet_subsys_attr_subsys_vendor_id_store(struct config_item *item, + const char *page, size_t count) +{ + u16 ssvid; + + if (kstrtou16(page, 0, &ssvid)) + return -EINVAL; + + down_write(&nvmet_config_sem); + to_subsys(item)->subsys_vendor_id = ssvid; + up_write(&nvmet_config_sem); + return count; +} +CONFIGFS_ATTR(nvmet_subsys_, attr_subsys_vendor_id); + static ssize_t nvmet_subsys_attr_model_show(struct config_item *item, char *page) { @@ -1546,6 +1673,8 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_serial, &nvmet_subsys_attr_attr_cntlid_min, &nvmet_subsys_attr_attr_cntlid_max, + &nvmet_subsys_attr_attr_vendor_id, + &nvmet_subsys_attr_attr_subsys_vendor_id, &nvmet_subsys_attr_attr_model, &nvmet_subsys_attr_attr_qid_max, &nvmet_subsys_attr_attr_ieee_oui, @@ -1587,6 +1716,11 @@ static struct config_group *nvmet_subsys_make(struct config_group *group, return ERR_PTR(-EINVAL); } + if (sysfs_streq(name, nvmet_disc_subsys->subsysnqn)) { + pr_err("can't create subsystem using unique discovery NQN\n"); + return ERR_PTR(-EINVAL); + } + subsys = nvmet_subsys_alloc(name, NVME_NQN_NVME); if (IS_ERR(subsys)) return ERR_CAST(subsys); @@ -1695,6 +1829,7 @@ static struct config_group *nvmet_referral_make( return ERR_PTR(-ENOMEM); INIT_LIST_HEAD(&port->entry); + port->disc_addr.trtype = NVMF_TRTYPE_MAX; config_group_init_type_name(&port->group, name, &nvmet_referral_type); return &port->group; @@ -1859,6 +1994,7 @@ static struct configfs_attribute *nvmet_port_attrs[] = { &nvmet_attr_addr_trtype, &nvmet_attr_addr_tsas, &nvmet_attr_param_inline_data_size, + &nvmet_attr_param_max_queue_size, #ifdef CONFIG_BLK_DEV_INTEGRITY &nvmet_attr_param_pi_enable, #endif @@ -1917,7 +2053,9 @@ static struct config_group *nvmet_ports_make(struct config_group *group, INIT_LIST_HEAD(&port->subsystems); INIT_LIST_HEAD(&port->referrals); port->inline_data_size = -1; /* < 0 == let the transport choose */ + port->max_queue_size = -1; /* < 0 == let the transport choose */ + port->disc_addr.trtype = NVMF_TRTYPE_MAX; port->disc_addr.portid = cpu_to_le16(portid); port->disc_addr.adrfam = NVMF_ADDR_FAMILY_MAX; port->disc_addr.treq = NVMF_TREQ_DISABLE_SQFLOW; @@ -1962,11 +2100,17 @@ static struct config_group nvmet_ports_group; static ssize_t nvmet_host_dhchap_key_show(struct config_item *item, char *page) { - u8 *dhchap_secret = to_host(item)->dhchap_secret; + u8 *dhchap_secret; + ssize_t ret; + down_read(&nvmet_config_sem); + dhchap_secret = to_host(item)->dhchap_secret; if (!dhchap_secret) - return sprintf(page, "\n"); - return sprintf(page, "%s\n", dhchap_secret); + ret = sprintf(page, "\n"); + else + ret = sprintf(page, "%s\n", dhchap_secret); + up_read(&nvmet_config_sem); + return ret; } static ssize_t nvmet_host_dhchap_key_store(struct config_item *item, @@ -1990,10 +2134,16 @@ static ssize_t nvmet_host_dhchap_ctrl_key_show(struct config_item *item, char *page) { u8 *dhchap_secret = to_host(item)->dhchap_ctrl_secret; + ssize_t ret; + down_read(&nvmet_config_sem); + dhchap_secret = to_host(item)->dhchap_ctrl_secret; if (!dhchap_secret) - return sprintf(page, "\n"); - return sprintf(page, "%s\n", dhchap_secret); + ret = sprintf(page, "\n"); + else + ret = sprintf(page, "%s\n", dhchap_secret); + up_read(&nvmet_config_sem); + return ret; } static ssize_t nvmet_host_dhchap_ctrl_key_store(struct config_item *item, @@ -2131,7 +2281,56 @@ static const struct config_item_type nvmet_hosts_type = { static struct config_group nvmet_hosts_group; +static ssize_t nvmet_root_discovery_nqn_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "%s\n", nvmet_disc_subsys->subsysnqn); +} + +static ssize_t nvmet_root_discovery_nqn_store(struct config_item *item, + const char *page, size_t count) +{ + struct list_head *entry; + char *old_nqn, *new_nqn; + size_t len; + + len = strcspn(page, "\n"); + if (!len || len > NVMF_NQN_FIELD_LEN - 1) + return -EINVAL; + + new_nqn = kstrndup(page, len, GFP_KERNEL); + if (!new_nqn) + return -ENOMEM; + + down_write(&nvmet_config_sem); + list_for_each(entry, &nvmet_subsystems_group.cg_children) { + struct config_item *item = + container_of(entry, struct config_item, ci_entry); + + if (!strncmp(config_item_name(item), page, len)) { + pr_err("duplicate NQN %s\n", config_item_name(item)); + up_write(&nvmet_config_sem); + kfree(new_nqn); + return -EINVAL; + } + } + old_nqn = nvmet_disc_subsys->subsysnqn; + nvmet_disc_subsys->subsysnqn = new_nqn; + up_write(&nvmet_config_sem); + + kfree(old_nqn); + return len; +} + +CONFIGFS_ATTR(nvmet_root_, discovery_nqn); + +static struct configfs_attribute *nvmet_root_attrs[] = { + &nvmet_root_attr_discovery_nqn, + NULL, +}; + static const struct config_item_type nvmet_root_type = { + .ct_attrs = nvmet_root_attrs, .ct_owner = THIS_MODULE, }; |