diff options
Diffstat (limited to 'drivers/nvme/target/configfs.c')
| -rw-r--r-- | drivers/nvme/target/configfs.c | 272 |
1 files changed, 175 insertions, 97 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c index 58cabd7b6fc5..419e0d4ce79b 100644 --- a/drivers/nvme/target/configfs.c +++ b/drivers/nvme/target/configfs.c @@ -20,61 +20,71 @@ static const struct config_item_type nvmet_subsys_type; static LIST_HEAD(nvmet_ports_list); struct list_head *nvmet_ports = &nvmet_ports_list; -static const struct nvmet_transport_name { +struct nvmet_type_name_map { u8 type; const char *name; -} nvmet_transport_names[] = { +}; + +static struct nvmet_type_name_map nvmet_transport[] = { { NVMF_TRTYPE_RDMA, "rdma" }, { NVMF_TRTYPE_FC, "fc" }, { NVMF_TRTYPE_TCP, "tcp" }, { NVMF_TRTYPE_LOOP, "loop" }, }; +static const struct nvmet_type_name_map nvmet_addr_family[] = { + { NVMF_ADDR_FAMILY_PCI, "pcie" }, + { NVMF_ADDR_FAMILY_IP4, "ipv4" }, + { NVMF_ADDR_FAMILY_IP6, "ipv6" }, + { NVMF_ADDR_FAMILY_IB, "ib" }, + { NVMF_ADDR_FAMILY_FC, "fc" }, + { NVMF_ADDR_FAMILY_LOOP, "loop" }, +}; + +static bool nvmet_is_port_enabled(struct nvmet_port *p, const char *caller) +{ + if (p->enabled) + pr_err("Disable port '%u' before changing attribute in %s\n", + le16_to_cpu(p->disc_addr.portid), caller); + return p->enabled; +} + /* * nvmet_port Generic ConfigFS definitions. * Used in any place in the ConfigFS tree that refers to an address. */ -static ssize_t nvmet_addr_adrfam_show(struct config_item *item, - char *page) +static ssize_t nvmet_addr_adrfam_show(struct config_item *item, char *page) { - switch (to_nvmet_port(item)->disc_addr.adrfam) { - case NVMF_ADDR_FAMILY_IP4: - return sprintf(page, "ipv4\n"); - case NVMF_ADDR_FAMILY_IP6: - return sprintf(page, "ipv6\n"); - case NVMF_ADDR_FAMILY_IB: - return sprintf(page, "ib\n"); - case NVMF_ADDR_FAMILY_FC: - return sprintf(page, "fc\n"); - default: - return sprintf(page, "\n"); + u8 adrfam = to_nvmet_port(item)->disc_addr.adrfam; + int i; + + for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) { + if (nvmet_addr_family[i].type == adrfam) + return sprintf(page, "%s\n", nvmet_addr_family[i].name); } + + return sprintf(page, "\n"); } static ssize_t nvmet_addr_adrfam_store(struct config_item *item, const char *page, size_t count) { struct nvmet_port *port = to_nvmet_port(item); + int i; - if (port->enabled) { - pr_err("Cannot modify address while enabled\n"); - pr_err("Disable the address before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } - if (sysfs_streq(page, "ipv4")) { - port->disc_addr.adrfam = NVMF_ADDR_FAMILY_IP4; - } else if (sysfs_streq(page, "ipv6")) { - port->disc_addr.adrfam = NVMF_ADDR_FAMILY_IP6; - } else if (sysfs_streq(page, "ib")) { - port->disc_addr.adrfam = NVMF_ADDR_FAMILY_IB; - } else if (sysfs_streq(page, "fc")) { - port->disc_addr.adrfam = NVMF_ADDR_FAMILY_FC; - } else { - pr_err("Invalid value '%s' for adrfam\n", page); - return -EINVAL; + for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) { + if (sysfs_streq(page, nvmet_addr_family[i].name)) + goto found; } + pr_err("Invalid value '%s' for adrfam\n", page); + return -EINVAL; + +found: + port->disc_addr.adrfam = nvmet_addr_family[i].type; return count; } @@ -100,11 +110,9 @@ static ssize_t nvmet_addr_portid_store(struct config_item *item, return -EINVAL; } - if (port->enabled) { - pr_err("Cannot modify address while enabled\n"); - pr_err("Disable the address before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } + port->disc_addr.portid = cpu_to_le16(portid); return count; } @@ -130,11 +138,8 @@ static ssize_t nvmet_addr_traddr_store(struct config_item *item, return -EINVAL; } - if (port->enabled) { - pr_err("Cannot modify address while enabled\n"); - pr_err("Disable the address before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } if (sscanf(page, "%s\n", port->disc_addr.traddr) != 1) return -EINVAL; @@ -143,20 +148,24 @@ static ssize_t nvmet_addr_traddr_store(struct config_item *item, CONFIGFS_ATTR(nvmet_, addr_traddr); -static ssize_t nvmet_addr_treq_show(struct config_item *item, - char *page) +static const struct nvmet_type_name_map nvmet_addr_treq[] = { + { NVMF_TREQ_NOT_SPECIFIED, "not specified" }, + { NVMF_TREQ_REQUIRED, "required" }, + { NVMF_TREQ_NOT_REQUIRED, "not required" }, +}; + +static ssize_t nvmet_addr_treq_show(struct config_item *item, char *page) { - switch (to_nvmet_port(item)->disc_addr.treq & - NVME_TREQ_SECURE_CHANNEL_MASK) { - case NVMF_TREQ_NOT_SPECIFIED: - return sprintf(page, "not specified\n"); - case NVMF_TREQ_REQUIRED: - return sprintf(page, "required\n"); - case NVMF_TREQ_NOT_REQUIRED: - return sprintf(page, "not required\n"); - default: - return sprintf(page, "\n"); + u8 treq = to_nvmet_port(item)->disc_addr.treq & + NVME_TREQ_SECURE_CHANNEL_MASK; + int i; + + for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) { + if (treq == nvmet_addr_treq[i].type) + return sprintf(page, "%s\n", nvmet_addr_treq[i].name); } + + return sprintf(page, "\n"); } static ssize_t nvmet_addr_treq_store(struct config_item *item, @@ -164,25 +173,22 @@ static ssize_t nvmet_addr_treq_store(struct config_item *item, { struct nvmet_port *port = to_nvmet_port(item); u8 treq = port->disc_addr.treq & ~NVME_TREQ_SECURE_CHANNEL_MASK; + int i; - if (port->enabled) { - pr_err("Cannot modify address while enabled\n"); - pr_err("Disable the address before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } - if (sysfs_streq(page, "not specified")) { - treq |= NVMF_TREQ_NOT_SPECIFIED; - } else if (sysfs_streq(page, "required")) { - treq |= NVMF_TREQ_REQUIRED; - } else if (sysfs_streq(page, "not required")) { - treq |= NVMF_TREQ_NOT_REQUIRED; - } else { - pr_err("Invalid value '%s' for treq\n", page); - return -EINVAL; + for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) { + if (sysfs_streq(page, nvmet_addr_treq[i].name)) + goto found; } - port->disc_addr.treq = treq; + pr_err("Invalid value '%s' for treq\n", page); + return -EINVAL; + +found: + treq |= nvmet_addr_treq[i].type; + port->disc_addr.treq = treq; return count; } @@ -206,11 +212,8 @@ static ssize_t nvmet_addr_trsvcid_store(struct config_item *item, pr_err("Invalid value '%s' for trsvcid\n", page); return -EINVAL; } - if (port->enabled) { - pr_err("Cannot modify address while enabled\n"); - pr_err("Disable the address before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } if (sscanf(page, "%s\n", port->disc_addr.trsvcid) != 1) return -EINVAL; @@ -233,11 +236,8 @@ static ssize_t nvmet_param_inline_data_size_store(struct config_item *item, struct nvmet_port *port = to_nvmet_port(item); int ret; - if (port->enabled) { - pr_err("Cannot modify inline_data_size while port enabled\n"); - pr_err("Disable the port before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } ret = kstrtoint(page, 0, &port->inline_data_size); if (ret) { pr_err("Invalid value '%s' for inline_data_size\n", page); @@ -248,16 +248,45 @@ static ssize_t nvmet_param_inline_data_size_store(struct config_item *item, CONFIGFS_ATTR(nvmet_, param_inline_data_size); +#ifdef CONFIG_BLK_DEV_INTEGRITY +static ssize_t nvmet_param_pi_enable_show(struct config_item *item, + char *page) +{ + struct nvmet_port *port = to_nvmet_port(item); + + return snprintf(page, PAGE_SIZE, "%d\n", port->pi_enable); +} + +static ssize_t nvmet_param_pi_enable_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_port *port = to_nvmet_port(item); + bool val; + + if (strtobool(page, &val)) + return -EINVAL; + + if (port->enabled) { + pr_err("Disable port before setting pi_enable value.\n"); + return -EACCES; + } + + port->pi_enable = val; + return count; +} + +CONFIGFS_ATTR(nvmet_, param_pi_enable); +#endif + static ssize_t nvmet_addr_trtype_show(struct config_item *item, char *page) { struct nvmet_port *port = to_nvmet_port(item); int i; - for (i = 0; i < ARRAY_SIZE(nvmet_transport_names); i++) { - if (port->disc_addr.trtype != nvmet_transport_names[i].type) - continue; - return sprintf(page, "%s\n", nvmet_transport_names[i].name); + for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) { + if (port->disc_addr.trtype == nvmet_transport[i].type) + return sprintf(page, "%s\n", nvmet_transport[i].name); } return sprintf(page, "\n"); @@ -276,22 +305,20 @@ static ssize_t nvmet_addr_trtype_store(struct config_item *item, struct nvmet_port *port = to_nvmet_port(item); int i; - if (port->enabled) { - pr_err("Cannot modify address while enabled\n"); - pr_err("Disable the address before modifying\n"); + if (nvmet_is_port_enabled(port, __func__)) return -EACCES; - } - for (i = 0; i < ARRAY_SIZE(nvmet_transport_names); i++) { - if (sysfs_streq(page, nvmet_transport_names[i].name)) + for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) { + if (sysfs_streq(page, nvmet_transport[i].name)) goto found; } pr_err("Invalid value '%s' for trtype\n", page); return -EINVAL; + found: memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE); - port->disc_addr.trtype = nvmet_transport_names[i].type; + port->disc_addr.trtype = nvmet_transport[i].type; if (port->disc_addr.trtype == NVMF_TRTYPE_RDMA) nvmet_port_init_tsas_rdma(port); return count; @@ -327,7 +354,7 @@ static ssize_t nvmet_ns_device_path_store(struct config_item *item, kfree(ns->device_path); ret = -ENOMEM; - ns->device_path = kstrndup(page, len, GFP_KERNEL); + ns->device_path = kmemdup_nul(page, len, GFP_KERNEL); if (!ns->device_path) goto out_unlock; @@ -543,6 +570,31 @@ static ssize_t nvmet_ns_buffered_io_store(struct config_item *item, CONFIGFS_ATTR(nvmet_ns_, buffered_io); +static ssize_t nvmet_ns_revalidate_size_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_ns *ns = to_nvmet_ns(item); + bool val; + + if (strtobool(page, &val)) + return -EINVAL; + + if (!val) + return -EINVAL; + + mutex_lock(&ns->subsys->lock); + if (!ns->enabled) { + pr_err("enable ns before revalidate.\n"); + mutex_unlock(&ns->subsys->lock); + return -EINVAL; + } + nvmet_ns_revalidate(ns); + mutex_unlock(&ns->subsys->lock); + return count; +} + +CONFIGFS_ATTR_WO(nvmet_ns_, revalidate_size); + static struct configfs_attribute *nvmet_ns_attrs[] = { &nvmet_ns_attr_device_path, &nvmet_ns_attr_device_nguid, @@ -550,6 +602,7 @@ static struct configfs_attribute *nvmet_ns_attrs[] = { &nvmet_ns_attr_ana_grpid, &nvmet_ns_attr_enable, &nvmet_ns_attr_buffered_io, + &nvmet_ns_attr_revalidate_size, #ifdef CONFIG_PCI_P2PDMA &nvmet_ns_attr_p2pmem, #endif @@ -963,7 +1016,7 @@ static ssize_t nvmet_subsys_attr_model_store(struct config_item *item, return -EINVAL; } - new_model_number = kstrndup(page, len, GFP_KERNEL); + new_model_number = kmemdup_nul(page, len, GFP_KERNEL); if (!new_model_number) return -ENOMEM; @@ -987,6 +1040,28 @@ static ssize_t nvmet_subsys_attr_model_store(struct config_item *item, } CONFIGFS_ATTR(nvmet_subsys_, attr_model); +#ifdef CONFIG_BLK_DEV_INTEGRITY +static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item, + char *page) +{ + return snprintf(page, PAGE_SIZE, "%d\n", to_subsys(item)->pi_support); +} + +static ssize_t nvmet_subsys_attr_pi_enable_store(struct config_item *item, + const char *page, size_t count) +{ + struct nvmet_subsys *subsys = to_subsys(item); + bool pi_enable; + + if (strtobool(page, &pi_enable)) + return -EINVAL; + + subsys->pi_support = pi_enable; + return count; +} +CONFIGFS_ATTR(nvmet_subsys_, attr_pi_enable); +#endif + static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_allow_any_host, &nvmet_subsys_attr_attr_version, @@ -994,6 +1069,9 @@ static struct configfs_attribute *nvmet_subsys_attrs[] = { &nvmet_subsys_attr_attr_cntlid_min, &nvmet_subsys_attr_attr_cntlid_max, &nvmet_subsys_attr_attr_model, +#ifdef CONFIG_BLK_DEV_INTEGRITY + &nvmet_subsys_attr_attr_pi_enable, +#endif NULL, }; @@ -1149,10 +1227,7 @@ static const struct config_item_type nvmet_referrals_type = { .ct_group_ops = &nvmet_referral_group_ops, }; -static struct { - enum nvme_ana_state state; - const char *name; -} nvmet_ana_state_names[] = { +static struct nvmet_type_name_map nvmet_ana_state[] = { { NVME_ANA_OPTIMIZED, "optimized" }, { NVME_ANA_NONOPTIMIZED, "non-optimized" }, { NVME_ANA_INACCESSIBLE, "inaccessible" }, @@ -1167,10 +1242,9 @@ static ssize_t nvmet_ana_group_ana_state_show(struct config_item *item, enum nvme_ana_state state = grp->port->ana_state[grp->grpid]; int i; - for (i = 0; i < ARRAY_SIZE(nvmet_ana_state_names); i++) { - if (state != nvmet_ana_state_names[i].state) - continue; - return sprintf(page, "%s\n", nvmet_ana_state_names[i].name); + for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) { + if (state == nvmet_ana_state[i].type) + return sprintf(page, "%s\n", nvmet_ana_state[i].name); } return sprintf(page, "\n"); @@ -1180,10 +1254,11 @@ static ssize_t nvmet_ana_group_ana_state_store(struct config_item *item, const char *page, size_t count) { struct nvmet_ana_group *grp = to_ana_group(item); + enum nvme_ana_state *ana_state = grp->port->ana_state; int i; - for (i = 0; i < ARRAY_SIZE(nvmet_ana_state_names); i++) { - if (sysfs_streq(page, nvmet_ana_state_names[i].name)) + for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) { + if (sysfs_streq(page, nvmet_ana_state[i].name)) goto found; } @@ -1192,10 +1267,9 @@ static ssize_t nvmet_ana_group_ana_state_store(struct config_item *item, found: down_write(&nvmet_ana_sem); - grp->port->ana_state[grp->grpid] = nvmet_ana_state_names[i].state; + ana_state[grp->grpid] = (enum nvme_ana_state) nvmet_ana_state[i].type; nvmet_ana_chgcnt++; up_write(&nvmet_ana_sem); - nvmet_port_send_ana_event(grp->port); return count; } @@ -1297,6 +1371,9 @@ static struct configfs_attribute *nvmet_port_attrs[] = { &nvmet_attr_addr_trsvcid, &nvmet_attr_addr_trtype, &nvmet_attr_param_inline_data_size, +#ifdef CONFIG_BLK_DEV_INTEGRITY + &nvmet_attr_param_pi_enable, +#endif NULL, }; @@ -1346,6 +1423,7 @@ static struct config_group *nvmet_ports_make(struct config_group *group, port->inline_data_size = -1; /* < 0 == let the transport choose */ port->disc_addr.portid = cpu_to_le16(portid); + port->disc_addr.adrfam = NVMF_ADDR_FAMILY_MAX; port->disc_addr.treq = NVMF_TREQ_DISABLE_SQFLOW; config_group_init_type_name(&port->group, name, &nvmet_port_type); |