177141dc6SChristoph Hellwig // SPDX-License-Identifier: GPL-2.0 2a07b4970SChristoph Hellwig /* 3a07b4970SChristoph Hellwig * Configfs interface for the NVMe target. 4a07b4970SChristoph Hellwig * Copyright (c) 2015-2016 HGST, a Western Digital Company. 5a07b4970SChristoph Hellwig */ 6a07b4970SChristoph Hellwig #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt 7a07b4970SChristoph Hellwig #include <linux/kernel.h> 8a07b4970SChristoph Hellwig #include <linux/module.h> 9a07b4970SChristoph Hellwig #include <linux/slab.h> 10a07b4970SChristoph Hellwig #include <linux/stat.h> 11a07b4970SChristoph Hellwig #include <linux/ctype.h> 12c6925093SLogan Gunthorpe #include <linux/pci.h> 13c6925093SLogan Gunthorpe #include <linux/pci-p2pdma.h> 14a07b4970SChristoph Hellwig 15a07b4970SChristoph Hellwig #include "nvmet.h" 16a07b4970SChristoph Hellwig 1766603a31SBhumika Goyal static const struct config_item_type nvmet_host_type; 1866603a31SBhumika Goyal static const struct config_item_type nvmet_subsys_type; 19a07b4970SChristoph Hellwig 20b662a078SJay Sternberg static LIST_HEAD(nvmet_ports_list); 21b662a078SJay Sternberg struct list_head *nvmet_ports = &nvmet_ports_list; 22b662a078SJay Sternberg 2345e2f3c2SChaitanya Kulkarni struct nvmet_type_name_map { 24a5d18612SChristoph Hellwig u8 type; 25a5d18612SChristoph Hellwig const char *name; 2645e2f3c2SChaitanya Kulkarni }; 2745e2f3c2SChaitanya Kulkarni 2845e2f3c2SChaitanya Kulkarni static struct nvmet_type_name_map nvmet_transport[] = { 29a5d18612SChristoph Hellwig { NVMF_TRTYPE_RDMA, "rdma" }, 30a5d18612SChristoph Hellwig { NVMF_TRTYPE_FC, "fc" }, 31ad4f530eSSagi Grimberg { NVMF_TRTYPE_TCP, "tcp" }, 32a5d18612SChristoph Hellwig { NVMF_TRTYPE_LOOP, "loop" }, 33a5d18612SChristoph Hellwig }; 34a5d18612SChristoph Hellwig 357e764179SChaitanya Kulkarni static const struct nvmet_type_name_map nvmet_addr_family[] = { 367e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_PCI, "pcie" }, 377e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_IP4, "ipv4" }, 387e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_IP6, "ipv6" }, 397e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_IB, "ib" }, 407e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_FC, "fc" }, 41d02abd19SChaitanya Kulkarni { NVMF_ADDR_FAMILY_LOOP, "loop" }, 427e764179SChaitanya Kulkarni }; 437e764179SChaitanya Kulkarni 443ecb5faaSChaitanya Kulkarni static bool nvmet_is_port_enabled(struct nvmet_port *p, const char *caller) 453ecb5faaSChaitanya Kulkarni { 463ecb5faaSChaitanya Kulkarni if (p->enabled) 473ecb5faaSChaitanya Kulkarni pr_err("Disable port '%u' before changing attribute in %s\n", 483ecb5faaSChaitanya Kulkarni le16_to_cpu(p->disc_addr.portid), caller); 493ecb5faaSChaitanya Kulkarni return p->enabled; 503ecb5faaSChaitanya Kulkarni } 513ecb5faaSChaitanya Kulkarni 52a07b4970SChristoph Hellwig /* 53a07b4970SChristoph Hellwig * nvmet_port Generic ConfigFS definitions. 54a07b4970SChristoph Hellwig * Used in any place in the ConfigFS tree that refers to an address. 55a07b4970SChristoph Hellwig */ 567e764179SChaitanya Kulkarni static ssize_t nvmet_addr_adrfam_show(struct config_item *item, char *page) 57a07b4970SChristoph Hellwig { 587e764179SChaitanya Kulkarni u8 adrfam = to_nvmet_port(item)->disc_addr.adrfam; 597e764179SChaitanya Kulkarni int i; 607e764179SChaitanya Kulkarni 617e764179SChaitanya Kulkarni for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) { 627e764179SChaitanya Kulkarni if (nvmet_addr_family[i].type == adrfam) 6398152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", 6498152eb7SChaitanya Kulkarni nvmet_addr_family[i].name); 65a07b4970SChristoph Hellwig } 667e764179SChaitanya Kulkarni 6798152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "\n"); 68a07b4970SChristoph Hellwig } 69a07b4970SChristoph Hellwig 70a07b4970SChristoph Hellwig static ssize_t nvmet_addr_adrfam_store(struct config_item *item, 71a07b4970SChristoph Hellwig const char *page, size_t count) 72a07b4970SChristoph Hellwig { 73a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 747e764179SChaitanya Kulkarni int i; 75a07b4970SChristoph Hellwig 763ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 77a07b4970SChristoph Hellwig return -EACCES; 78a07b4970SChristoph Hellwig 797e764179SChaitanya Kulkarni for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) { 807e764179SChaitanya Kulkarni if (sysfs_streq(page, nvmet_addr_family[i].name)) 817e764179SChaitanya Kulkarni goto found; 82a07b4970SChristoph Hellwig } 83a07b4970SChristoph Hellwig 847e764179SChaitanya Kulkarni pr_err("Invalid value '%s' for adrfam\n", page); 857e764179SChaitanya Kulkarni return -EINVAL; 867e764179SChaitanya Kulkarni 877e764179SChaitanya Kulkarni found: 88d02abd19SChaitanya Kulkarni port->disc_addr.adrfam = nvmet_addr_family[i].type; 89a07b4970SChristoph Hellwig return count; 90a07b4970SChristoph Hellwig } 91a07b4970SChristoph Hellwig 92a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_adrfam); 93a07b4970SChristoph Hellwig 94a07b4970SChristoph Hellwig static ssize_t nvmet_addr_portid_show(struct config_item *item, 95a07b4970SChristoph Hellwig char *page) 96a07b4970SChristoph Hellwig { 9773d77c53SChaitanya Kulkarni __le16 portid = to_nvmet_port(item)->disc_addr.portid; 98a07b4970SChristoph Hellwig 9973d77c53SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%d\n", le16_to_cpu(portid)); 100a07b4970SChristoph Hellwig } 101a07b4970SChristoph Hellwig 102a07b4970SChristoph Hellwig static ssize_t nvmet_addr_portid_store(struct config_item *item, 103a07b4970SChristoph Hellwig const char *page, size_t count) 104a07b4970SChristoph Hellwig { 105a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 106a07b4970SChristoph Hellwig u16 portid = 0; 107a07b4970SChristoph Hellwig 108a07b4970SChristoph Hellwig if (kstrtou16(page, 0, &portid)) { 109a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for portid\n", page); 110a07b4970SChristoph Hellwig return -EINVAL; 111a07b4970SChristoph Hellwig } 112a07b4970SChristoph Hellwig 1133ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 114a07b4970SChristoph Hellwig return -EACCES; 1153ecb5faaSChaitanya Kulkarni 116a07b4970SChristoph Hellwig port->disc_addr.portid = cpu_to_le16(portid); 117a07b4970SChristoph Hellwig return count; 118a07b4970SChristoph Hellwig } 119a07b4970SChristoph Hellwig 120a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_portid); 121a07b4970SChristoph Hellwig 122a07b4970SChristoph Hellwig static ssize_t nvmet_addr_traddr_show(struct config_item *item, 123a07b4970SChristoph Hellwig char *page) 124a07b4970SChristoph Hellwig { 125a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 126a07b4970SChristoph Hellwig 12773d77c53SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", port->disc_addr.traddr); 128a07b4970SChristoph Hellwig } 129a07b4970SChristoph Hellwig 130a07b4970SChristoph Hellwig static ssize_t nvmet_addr_traddr_store(struct config_item *item, 131a07b4970SChristoph Hellwig const char *page, size_t count) 132a07b4970SChristoph Hellwig { 133a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 134a07b4970SChristoph Hellwig 135a07b4970SChristoph Hellwig if (count > NVMF_TRADDR_SIZE) { 136a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for traddr\n", page); 137a07b4970SChristoph Hellwig return -EINVAL; 138a07b4970SChristoph Hellwig } 139a07b4970SChristoph Hellwig 1403ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 141a07b4970SChristoph Hellwig return -EACCES; 1429ba2a5cbSSagi Grimberg 1439ba2a5cbSSagi Grimberg if (sscanf(page, "%s\n", port->disc_addr.traddr) != 1) 1449ba2a5cbSSagi Grimberg return -EINVAL; 1459ba2a5cbSSagi Grimberg return count; 146a07b4970SChristoph Hellwig } 147a07b4970SChristoph Hellwig 148a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_traddr); 149a07b4970SChristoph Hellwig 15087628e28SChaitanya Kulkarni static const struct nvmet_type_name_map nvmet_addr_treq[] = { 15187628e28SChaitanya Kulkarni { NVMF_TREQ_NOT_SPECIFIED, "not specified" }, 15287628e28SChaitanya Kulkarni { NVMF_TREQ_REQUIRED, "required" }, 15387628e28SChaitanya Kulkarni { NVMF_TREQ_NOT_REQUIRED, "not required" }, 15487628e28SChaitanya Kulkarni }; 15587628e28SChaitanya Kulkarni 15687628e28SChaitanya Kulkarni static ssize_t nvmet_addr_treq_show(struct config_item *item, char *page) 157a07b4970SChristoph Hellwig { 15887628e28SChaitanya Kulkarni u8 treq = to_nvmet_port(item)->disc_addr.treq & 15987628e28SChaitanya Kulkarni NVME_TREQ_SECURE_CHANNEL_MASK; 16087628e28SChaitanya Kulkarni int i; 16187628e28SChaitanya Kulkarni 16287628e28SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) { 16387628e28SChaitanya Kulkarni if (treq == nvmet_addr_treq[i].type) 16498152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", 16598152eb7SChaitanya Kulkarni nvmet_addr_treq[i].name); 166a07b4970SChristoph Hellwig } 16787628e28SChaitanya Kulkarni 16898152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "\n"); 169a07b4970SChristoph Hellwig } 170a07b4970SChristoph Hellwig 171a07b4970SChristoph Hellwig static ssize_t nvmet_addr_treq_store(struct config_item *item, 172a07b4970SChristoph Hellwig const char *page, size_t count) 173a07b4970SChristoph Hellwig { 174a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1750445e1b5SSagi Grimberg u8 treq = port->disc_addr.treq & ~NVME_TREQ_SECURE_CHANNEL_MASK; 17687628e28SChaitanya Kulkarni int i; 177a07b4970SChristoph Hellwig 1783ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 179a07b4970SChristoph Hellwig return -EACCES; 180a07b4970SChristoph Hellwig 18187628e28SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) { 18287628e28SChaitanya Kulkarni if (sysfs_streq(page, nvmet_addr_treq[i].name)) 18387628e28SChaitanya Kulkarni goto found; 18487628e28SChaitanya Kulkarni } 18587628e28SChaitanya Kulkarni 186a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for treq\n", page); 187a07b4970SChristoph Hellwig return -EINVAL; 188a07b4970SChristoph Hellwig 18987628e28SChaitanya Kulkarni found: 19087628e28SChaitanya Kulkarni treq |= nvmet_addr_treq[i].type; 19187628e28SChaitanya Kulkarni port->disc_addr.treq = treq; 192a07b4970SChristoph Hellwig return count; 193a07b4970SChristoph Hellwig } 194a07b4970SChristoph Hellwig 195a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_treq); 196a07b4970SChristoph Hellwig 197a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trsvcid_show(struct config_item *item, 198a07b4970SChristoph Hellwig char *page) 199a07b4970SChristoph Hellwig { 200a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 201a07b4970SChristoph Hellwig 20273d77c53SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", port->disc_addr.trsvcid); 203a07b4970SChristoph Hellwig } 204a07b4970SChristoph Hellwig 205a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trsvcid_store(struct config_item *item, 206a07b4970SChristoph Hellwig const char *page, size_t count) 207a07b4970SChristoph Hellwig { 208a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 209a07b4970SChristoph Hellwig 210a07b4970SChristoph Hellwig if (count > NVMF_TRSVCID_SIZE) { 211a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for trsvcid\n", page); 212a07b4970SChristoph Hellwig return -EINVAL; 213a07b4970SChristoph Hellwig } 2143ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 215a07b4970SChristoph Hellwig return -EACCES; 2169ba2a5cbSSagi Grimberg 2179ba2a5cbSSagi Grimberg if (sscanf(page, "%s\n", port->disc_addr.trsvcid) != 1) 2189ba2a5cbSSagi Grimberg return -EINVAL; 2199ba2a5cbSSagi Grimberg return count; 220a07b4970SChristoph Hellwig } 221a07b4970SChristoph Hellwig 222a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_trsvcid); 223a07b4970SChristoph Hellwig 2240d5ee2b2SSteve Wise static ssize_t nvmet_param_inline_data_size_show(struct config_item *item, 2250d5ee2b2SSteve Wise char *page) 2260d5ee2b2SSteve Wise { 2270d5ee2b2SSteve Wise struct nvmet_port *port = to_nvmet_port(item); 2280d5ee2b2SSteve Wise 2290d5ee2b2SSteve Wise return snprintf(page, PAGE_SIZE, "%d\n", port->inline_data_size); 2300d5ee2b2SSteve Wise } 2310d5ee2b2SSteve Wise 2320d5ee2b2SSteve Wise static ssize_t nvmet_param_inline_data_size_store(struct config_item *item, 2330d5ee2b2SSteve Wise const char *page, size_t count) 2340d5ee2b2SSteve Wise { 2350d5ee2b2SSteve Wise struct nvmet_port *port = to_nvmet_port(item); 2360d5ee2b2SSteve Wise int ret; 2370d5ee2b2SSteve Wise 2383ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 2390d5ee2b2SSteve Wise return -EACCES; 2400d5ee2b2SSteve Wise ret = kstrtoint(page, 0, &port->inline_data_size); 2410d5ee2b2SSteve Wise if (ret) { 2420d5ee2b2SSteve Wise pr_err("Invalid value '%s' for inline_data_size\n", page); 2430d5ee2b2SSteve Wise return -EINVAL; 2440d5ee2b2SSteve Wise } 2450d5ee2b2SSteve Wise return count; 2460d5ee2b2SSteve Wise } 2470d5ee2b2SSteve Wise 2480d5ee2b2SSteve Wise CONFIGFS_ATTR(nvmet_, param_inline_data_size); 2490d5ee2b2SSteve Wise 250ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 251ea52ac1cSIsrael Rukshin static ssize_t nvmet_param_pi_enable_show(struct config_item *item, 252ea52ac1cSIsrael Rukshin char *page) 253ea52ac1cSIsrael Rukshin { 254ea52ac1cSIsrael Rukshin struct nvmet_port *port = to_nvmet_port(item); 255ea52ac1cSIsrael Rukshin 256ea52ac1cSIsrael Rukshin return snprintf(page, PAGE_SIZE, "%d\n", port->pi_enable); 257ea52ac1cSIsrael Rukshin } 258ea52ac1cSIsrael Rukshin 259ea52ac1cSIsrael Rukshin static ssize_t nvmet_param_pi_enable_store(struct config_item *item, 260ea52ac1cSIsrael Rukshin const char *page, size_t count) 261ea52ac1cSIsrael Rukshin { 262ea52ac1cSIsrael Rukshin struct nvmet_port *port = to_nvmet_port(item); 263ea52ac1cSIsrael Rukshin bool val; 264ea52ac1cSIsrael Rukshin 265ea52ac1cSIsrael Rukshin if (strtobool(page, &val)) 266ea52ac1cSIsrael Rukshin return -EINVAL; 267ea52ac1cSIsrael Rukshin 268cc345622SIsrael Rukshin if (nvmet_is_port_enabled(port, __func__)) 269ea52ac1cSIsrael Rukshin return -EACCES; 270ea52ac1cSIsrael Rukshin 271ea52ac1cSIsrael Rukshin port->pi_enable = val; 272ea52ac1cSIsrael Rukshin return count; 273ea52ac1cSIsrael Rukshin } 274ea52ac1cSIsrael Rukshin 275ea52ac1cSIsrael Rukshin CONFIGFS_ATTR(nvmet_, param_pi_enable); 276ea52ac1cSIsrael Rukshin #endif 277ea52ac1cSIsrael Rukshin 278a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trtype_show(struct config_item *item, 279a07b4970SChristoph Hellwig char *page) 280a07b4970SChristoph Hellwig { 281a5d18612SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 282a5d18612SChristoph Hellwig int i; 283a5d18612SChristoph Hellwig 28445e2f3c2SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) { 28545e2f3c2SChaitanya Kulkarni if (port->disc_addr.trtype == nvmet_transport[i].type) 28698152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, 28798152eb7SChaitanya Kulkarni "%s\n", nvmet_transport[i].name); 288a07b4970SChristoph Hellwig } 289a5d18612SChristoph Hellwig 290a5d18612SChristoph Hellwig return sprintf(page, "\n"); 291a07b4970SChristoph Hellwig } 292a07b4970SChristoph Hellwig 293a07b4970SChristoph Hellwig static void nvmet_port_init_tsas_rdma(struct nvmet_port *port) 294a07b4970SChristoph Hellwig { 295a07b4970SChristoph Hellwig port->disc_addr.tsas.rdma.qptype = NVMF_RDMA_QPTYPE_CONNECTED; 296a07b4970SChristoph Hellwig port->disc_addr.tsas.rdma.prtype = NVMF_RDMA_PRTYPE_NOT_SPECIFIED; 297a07b4970SChristoph Hellwig port->disc_addr.tsas.rdma.cms = NVMF_RDMA_CMS_RDMA_CM; 298a07b4970SChristoph Hellwig } 299a07b4970SChristoph Hellwig 300a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trtype_store(struct config_item *item, 301a07b4970SChristoph Hellwig const char *page, size_t count) 302a07b4970SChristoph Hellwig { 303a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 304a5d18612SChristoph Hellwig int i; 305a07b4970SChristoph Hellwig 3063ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 307a07b4970SChristoph Hellwig return -EACCES; 308a07b4970SChristoph Hellwig 30945e2f3c2SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) { 31045e2f3c2SChaitanya Kulkarni if (sysfs_streq(page, nvmet_transport[i].name)) 311a5d18612SChristoph Hellwig goto found; 312a07b4970SChristoph Hellwig } 313a07b4970SChristoph Hellwig 314a5d18612SChristoph Hellwig pr_err("Invalid value '%s' for trtype\n", page); 315a5d18612SChristoph Hellwig return -EINVAL; 3167e764179SChaitanya Kulkarni 317a5d18612SChristoph Hellwig found: 318a5d18612SChristoph Hellwig memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE); 31945e2f3c2SChaitanya Kulkarni port->disc_addr.trtype = nvmet_transport[i].type; 320a5d18612SChristoph Hellwig if (port->disc_addr.trtype == NVMF_TRTYPE_RDMA) 321a5d18612SChristoph Hellwig nvmet_port_init_tsas_rdma(port); 322a07b4970SChristoph Hellwig return count; 323a07b4970SChristoph Hellwig } 324a07b4970SChristoph Hellwig 325a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_trtype); 326a07b4970SChristoph Hellwig 327a07b4970SChristoph Hellwig /* 328a07b4970SChristoph Hellwig * Namespace structures & file operation functions below 329a07b4970SChristoph Hellwig */ 330a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_path_show(struct config_item *item, char *page) 331a07b4970SChristoph Hellwig { 332a07b4970SChristoph Hellwig return sprintf(page, "%s\n", to_nvmet_ns(item)->device_path); 333a07b4970SChristoph Hellwig } 334a07b4970SChristoph Hellwig 335a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_path_store(struct config_item *item, 336a07b4970SChristoph Hellwig const char *page, size_t count) 337a07b4970SChristoph Hellwig { 338a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 339a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = ns->subsys; 3405613d312SHannes Reinecke size_t len; 341a07b4970SChristoph Hellwig int ret; 342a07b4970SChristoph Hellwig 343a07b4970SChristoph Hellwig mutex_lock(&subsys->lock); 344a07b4970SChristoph Hellwig ret = -EBUSY; 345e4fcf07cSSolganik Alexander if (ns->enabled) 346a07b4970SChristoph Hellwig goto out_unlock; 347a07b4970SChristoph Hellwig 3485613d312SHannes Reinecke ret = -EINVAL; 3495613d312SHannes Reinecke len = strcspn(page, "\n"); 3505613d312SHannes Reinecke if (!len) 3515613d312SHannes Reinecke goto out_unlock; 352a07b4970SChristoph Hellwig 3535613d312SHannes Reinecke kfree(ns->device_path); 354a07b4970SChristoph Hellwig ret = -ENOMEM; 35509bb8986SChen Zhou ns->device_path = kmemdup_nul(page, len, GFP_KERNEL); 356a07b4970SChristoph Hellwig if (!ns->device_path) 357a07b4970SChristoph Hellwig goto out_unlock; 358a07b4970SChristoph Hellwig 359a07b4970SChristoph Hellwig mutex_unlock(&subsys->lock); 360a07b4970SChristoph Hellwig return count; 361a07b4970SChristoph Hellwig 362a07b4970SChristoph Hellwig out_unlock: 363a07b4970SChristoph Hellwig mutex_unlock(&subsys->lock); 364a07b4970SChristoph Hellwig return ret; 365a07b4970SChristoph Hellwig } 366a07b4970SChristoph Hellwig 367a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, device_path); 368a07b4970SChristoph Hellwig 369c6925093SLogan Gunthorpe #ifdef CONFIG_PCI_P2PDMA 370c6925093SLogan Gunthorpe static ssize_t nvmet_ns_p2pmem_show(struct config_item *item, char *page) 371c6925093SLogan Gunthorpe { 372c6925093SLogan Gunthorpe struct nvmet_ns *ns = to_nvmet_ns(item); 373c6925093SLogan Gunthorpe 374c6925093SLogan Gunthorpe return pci_p2pdma_enable_show(page, ns->p2p_dev, ns->use_p2pmem); 375c6925093SLogan Gunthorpe } 376c6925093SLogan Gunthorpe 377c6925093SLogan Gunthorpe static ssize_t nvmet_ns_p2pmem_store(struct config_item *item, 378c6925093SLogan Gunthorpe const char *page, size_t count) 379c6925093SLogan Gunthorpe { 380c6925093SLogan Gunthorpe struct nvmet_ns *ns = to_nvmet_ns(item); 381c6925093SLogan Gunthorpe struct pci_dev *p2p_dev = NULL; 382c6925093SLogan Gunthorpe bool use_p2pmem; 383c6925093SLogan Gunthorpe int ret = count; 384c6925093SLogan Gunthorpe int error; 385c6925093SLogan Gunthorpe 386c6925093SLogan Gunthorpe mutex_lock(&ns->subsys->lock); 387c6925093SLogan Gunthorpe if (ns->enabled) { 388c6925093SLogan Gunthorpe ret = -EBUSY; 389c6925093SLogan Gunthorpe goto out_unlock; 390c6925093SLogan Gunthorpe } 391c6925093SLogan Gunthorpe 392c6925093SLogan Gunthorpe error = pci_p2pdma_enable_store(page, &p2p_dev, &use_p2pmem); 393c6925093SLogan Gunthorpe if (error) { 394c6925093SLogan Gunthorpe ret = error; 395c6925093SLogan Gunthorpe goto out_unlock; 396c6925093SLogan Gunthorpe } 397c6925093SLogan Gunthorpe 398c6925093SLogan Gunthorpe ns->use_p2pmem = use_p2pmem; 399c6925093SLogan Gunthorpe pci_dev_put(ns->p2p_dev); 400c6925093SLogan Gunthorpe ns->p2p_dev = p2p_dev; 401c6925093SLogan Gunthorpe 402c6925093SLogan Gunthorpe out_unlock: 403c6925093SLogan Gunthorpe mutex_unlock(&ns->subsys->lock); 404c6925093SLogan Gunthorpe 405c6925093SLogan Gunthorpe return ret; 406c6925093SLogan Gunthorpe } 407c6925093SLogan Gunthorpe 408c6925093SLogan Gunthorpe CONFIGFS_ATTR(nvmet_ns_, p2pmem); 409c6925093SLogan Gunthorpe #endif /* CONFIG_PCI_P2PDMA */ 410c6925093SLogan Gunthorpe 411430c7befSJohannes Thumshirn static ssize_t nvmet_ns_device_uuid_show(struct config_item *item, char *page) 412430c7befSJohannes Thumshirn { 413430c7befSJohannes Thumshirn return sprintf(page, "%pUb\n", &to_nvmet_ns(item)->uuid); 414430c7befSJohannes Thumshirn } 415430c7befSJohannes Thumshirn 416430c7befSJohannes Thumshirn static ssize_t nvmet_ns_device_uuid_store(struct config_item *item, 417430c7befSJohannes Thumshirn const char *page, size_t count) 418430c7befSJohannes Thumshirn { 419430c7befSJohannes Thumshirn struct nvmet_ns *ns = to_nvmet_ns(item); 420430c7befSJohannes Thumshirn struct nvmet_subsys *subsys = ns->subsys; 421430c7befSJohannes Thumshirn int ret = 0; 422430c7befSJohannes Thumshirn 423430c7befSJohannes Thumshirn mutex_lock(&subsys->lock); 424430c7befSJohannes Thumshirn if (ns->enabled) { 425430c7befSJohannes Thumshirn ret = -EBUSY; 426430c7befSJohannes Thumshirn goto out_unlock; 427430c7befSJohannes Thumshirn } 428430c7befSJohannes Thumshirn 429430c7befSJohannes Thumshirn if (uuid_parse(page, &ns->uuid)) 430430c7befSJohannes Thumshirn ret = -EINVAL; 431430c7befSJohannes Thumshirn 432430c7befSJohannes Thumshirn out_unlock: 433430c7befSJohannes Thumshirn mutex_unlock(&subsys->lock); 434430c7befSJohannes Thumshirn return ret ? ret : count; 435430c7befSJohannes Thumshirn } 436430c7befSJohannes Thumshirn 437f871749aSMax Gurtovoy CONFIGFS_ATTR(nvmet_ns_, device_uuid); 438f871749aSMax Gurtovoy 439a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_nguid_show(struct config_item *item, char *page) 440a07b4970SChristoph Hellwig { 441a07b4970SChristoph Hellwig return sprintf(page, "%pUb\n", &to_nvmet_ns(item)->nguid); 442a07b4970SChristoph Hellwig } 443a07b4970SChristoph Hellwig 444a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_nguid_store(struct config_item *item, 445a07b4970SChristoph Hellwig const char *page, size_t count) 446a07b4970SChristoph Hellwig { 447a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 448a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = ns->subsys; 449a07b4970SChristoph Hellwig u8 nguid[16]; 450a07b4970SChristoph Hellwig const char *p = page; 451a07b4970SChristoph Hellwig int i; 452a07b4970SChristoph Hellwig int ret = 0; 453a07b4970SChristoph Hellwig 454a07b4970SChristoph Hellwig mutex_lock(&subsys->lock); 455e4fcf07cSSolganik Alexander if (ns->enabled) { 456a07b4970SChristoph Hellwig ret = -EBUSY; 457a07b4970SChristoph Hellwig goto out_unlock; 458a07b4970SChristoph Hellwig } 459a07b4970SChristoph Hellwig 460a07b4970SChristoph Hellwig for (i = 0; i < 16; i++) { 461a07b4970SChristoph Hellwig if (p + 2 > page + count) { 462a07b4970SChristoph Hellwig ret = -EINVAL; 463a07b4970SChristoph Hellwig goto out_unlock; 464a07b4970SChristoph Hellwig } 465a07b4970SChristoph Hellwig if (!isxdigit(p[0]) || !isxdigit(p[1])) { 466a07b4970SChristoph Hellwig ret = -EINVAL; 467a07b4970SChristoph Hellwig goto out_unlock; 468a07b4970SChristoph Hellwig } 469a07b4970SChristoph Hellwig 470a07b4970SChristoph Hellwig nguid[i] = (hex_to_bin(p[0]) << 4) | hex_to_bin(p[1]); 471a07b4970SChristoph Hellwig p += 2; 472a07b4970SChristoph Hellwig 473a07b4970SChristoph Hellwig if (*p == '-' || *p == ':') 474a07b4970SChristoph Hellwig p++; 475a07b4970SChristoph Hellwig } 476a07b4970SChristoph Hellwig 477a07b4970SChristoph Hellwig memcpy(&ns->nguid, nguid, sizeof(nguid)); 478a07b4970SChristoph Hellwig out_unlock: 479a07b4970SChristoph Hellwig mutex_unlock(&subsys->lock); 480a07b4970SChristoph Hellwig return ret ? ret : count; 481a07b4970SChristoph Hellwig } 482a07b4970SChristoph Hellwig 483a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, device_nguid); 484a07b4970SChristoph Hellwig 48562ac0d32SChristoph Hellwig static ssize_t nvmet_ns_ana_grpid_show(struct config_item *item, char *page) 48662ac0d32SChristoph Hellwig { 48762ac0d32SChristoph Hellwig return sprintf(page, "%u\n", to_nvmet_ns(item)->anagrpid); 48862ac0d32SChristoph Hellwig } 48962ac0d32SChristoph Hellwig 49062ac0d32SChristoph Hellwig static ssize_t nvmet_ns_ana_grpid_store(struct config_item *item, 49162ac0d32SChristoph Hellwig const char *page, size_t count) 49262ac0d32SChristoph Hellwig { 49362ac0d32SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 49462ac0d32SChristoph Hellwig u32 oldgrpid, newgrpid; 49562ac0d32SChristoph Hellwig int ret; 49662ac0d32SChristoph Hellwig 49762ac0d32SChristoph Hellwig ret = kstrtou32(page, 0, &newgrpid); 49862ac0d32SChristoph Hellwig if (ret) 49962ac0d32SChristoph Hellwig return ret; 50062ac0d32SChristoph Hellwig 50162ac0d32SChristoph Hellwig if (newgrpid < 1 || newgrpid > NVMET_MAX_ANAGRPS) 50262ac0d32SChristoph Hellwig return -EINVAL; 50362ac0d32SChristoph Hellwig 50462ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 50562ac0d32SChristoph Hellwig oldgrpid = ns->anagrpid; 50662ac0d32SChristoph Hellwig nvmet_ana_group_enabled[newgrpid]++; 50762ac0d32SChristoph Hellwig ns->anagrpid = newgrpid; 50862ac0d32SChristoph Hellwig nvmet_ana_group_enabled[oldgrpid]--; 50962ac0d32SChristoph Hellwig nvmet_ana_chgcnt++; 51062ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 51162ac0d32SChristoph Hellwig 51262ac0d32SChristoph Hellwig nvmet_send_ana_event(ns->subsys, NULL); 51362ac0d32SChristoph Hellwig return count; 51462ac0d32SChristoph Hellwig } 51562ac0d32SChristoph Hellwig 51662ac0d32SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, ana_grpid); 51762ac0d32SChristoph Hellwig 518a07b4970SChristoph Hellwig static ssize_t nvmet_ns_enable_show(struct config_item *item, char *page) 519a07b4970SChristoph Hellwig { 520e4fcf07cSSolganik Alexander return sprintf(page, "%d\n", to_nvmet_ns(item)->enabled); 521a07b4970SChristoph Hellwig } 522a07b4970SChristoph Hellwig 523a07b4970SChristoph Hellwig static ssize_t nvmet_ns_enable_store(struct config_item *item, 524a07b4970SChristoph Hellwig const char *page, size_t count) 525a07b4970SChristoph Hellwig { 526a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 527a07b4970SChristoph Hellwig bool enable; 528a07b4970SChristoph Hellwig int ret = 0; 529a07b4970SChristoph Hellwig 530a07b4970SChristoph Hellwig if (strtobool(page, &enable)) 531a07b4970SChristoph Hellwig return -EINVAL; 532a07b4970SChristoph Hellwig 533a07b4970SChristoph Hellwig if (enable) 534a07b4970SChristoph Hellwig ret = nvmet_ns_enable(ns); 535a07b4970SChristoph Hellwig else 536a07b4970SChristoph Hellwig nvmet_ns_disable(ns); 537a07b4970SChristoph Hellwig 538a07b4970SChristoph Hellwig return ret ? ret : count; 539a07b4970SChristoph Hellwig } 540a07b4970SChristoph Hellwig 541a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, enable); 542a07b4970SChristoph Hellwig 54355eb942eSChaitanya Kulkarni static ssize_t nvmet_ns_buffered_io_show(struct config_item *item, char *page) 54455eb942eSChaitanya Kulkarni { 54555eb942eSChaitanya Kulkarni return sprintf(page, "%d\n", to_nvmet_ns(item)->buffered_io); 54655eb942eSChaitanya Kulkarni } 54755eb942eSChaitanya Kulkarni 54855eb942eSChaitanya Kulkarni static ssize_t nvmet_ns_buffered_io_store(struct config_item *item, 54955eb942eSChaitanya Kulkarni const char *page, size_t count) 55055eb942eSChaitanya Kulkarni { 55155eb942eSChaitanya Kulkarni struct nvmet_ns *ns = to_nvmet_ns(item); 55255eb942eSChaitanya Kulkarni bool val; 55355eb942eSChaitanya Kulkarni 55455eb942eSChaitanya Kulkarni if (strtobool(page, &val)) 55555eb942eSChaitanya Kulkarni return -EINVAL; 55655eb942eSChaitanya Kulkarni 55755eb942eSChaitanya Kulkarni mutex_lock(&ns->subsys->lock); 55855eb942eSChaitanya Kulkarni if (ns->enabled) { 55955eb942eSChaitanya Kulkarni pr_err("disable ns before setting buffered_io value.\n"); 56055eb942eSChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 56155eb942eSChaitanya Kulkarni return -EINVAL; 56255eb942eSChaitanya Kulkarni } 56355eb942eSChaitanya Kulkarni 56455eb942eSChaitanya Kulkarni ns->buffered_io = val; 56555eb942eSChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 56655eb942eSChaitanya Kulkarni return count; 56755eb942eSChaitanya Kulkarni } 56855eb942eSChaitanya Kulkarni 56955eb942eSChaitanya Kulkarni CONFIGFS_ATTR(nvmet_ns_, buffered_io); 57055eb942eSChaitanya Kulkarni 5711f357548SChaitanya Kulkarni static ssize_t nvmet_ns_revalidate_size_store(struct config_item *item, 5721f357548SChaitanya Kulkarni const char *page, size_t count) 5731f357548SChaitanya Kulkarni { 5741f357548SChaitanya Kulkarni struct nvmet_ns *ns = to_nvmet_ns(item); 5751f357548SChaitanya Kulkarni bool val; 5761f357548SChaitanya Kulkarni 5771f357548SChaitanya Kulkarni if (strtobool(page, &val)) 5781f357548SChaitanya Kulkarni return -EINVAL; 5791f357548SChaitanya Kulkarni 5801f357548SChaitanya Kulkarni if (!val) 5811f357548SChaitanya Kulkarni return -EINVAL; 5821f357548SChaitanya Kulkarni 5831f357548SChaitanya Kulkarni mutex_lock(&ns->subsys->lock); 5841f357548SChaitanya Kulkarni if (!ns->enabled) { 5851f357548SChaitanya Kulkarni pr_err("enable ns before revalidate.\n"); 5861f357548SChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 5871f357548SChaitanya Kulkarni return -EINVAL; 5881f357548SChaitanya Kulkarni } 589da783733SChristoph Hellwig if (nvmet_ns_revalidate(ns)) 590da783733SChristoph Hellwig nvmet_ns_changed(ns->subsys, ns->nsid); 5911f357548SChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 5921f357548SChaitanya Kulkarni return count; 5931f357548SChaitanya Kulkarni } 5941f357548SChaitanya Kulkarni 5951f357548SChaitanya Kulkarni CONFIGFS_ATTR_WO(nvmet_ns_, revalidate_size); 5961f357548SChaitanya Kulkarni 597a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_ns_attrs[] = { 598a07b4970SChristoph Hellwig &nvmet_ns_attr_device_path, 599a07b4970SChristoph Hellwig &nvmet_ns_attr_device_nguid, 600430c7befSJohannes Thumshirn &nvmet_ns_attr_device_uuid, 60162ac0d32SChristoph Hellwig &nvmet_ns_attr_ana_grpid, 602a07b4970SChristoph Hellwig &nvmet_ns_attr_enable, 60355eb942eSChaitanya Kulkarni &nvmet_ns_attr_buffered_io, 6041f357548SChaitanya Kulkarni &nvmet_ns_attr_revalidate_size, 605c6925093SLogan Gunthorpe #ifdef CONFIG_PCI_P2PDMA 606c6925093SLogan Gunthorpe &nvmet_ns_attr_p2pmem, 607c6925093SLogan Gunthorpe #endif 608a07b4970SChristoph Hellwig NULL, 609a07b4970SChristoph Hellwig }; 610a07b4970SChristoph Hellwig 611a07b4970SChristoph Hellwig static void nvmet_ns_release(struct config_item *item) 612a07b4970SChristoph Hellwig { 613a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 614a07b4970SChristoph Hellwig 615a07b4970SChristoph Hellwig nvmet_ns_free(ns); 616a07b4970SChristoph Hellwig } 617a07b4970SChristoph Hellwig 618a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_ns_item_ops = { 619a07b4970SChristoph Hellwig .release = nvmet_ns_release, 620a07b4970SChristoph Hellwig }; 621a07b4970SChristoph Hellwig 62266603a31SBhumika Goyal static const struct config_item_type nvmet_ns_type = { 623a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_ns_item_ops, 624a07b4970SChristoph Hellwig .ct_attrs = nvmet_ns_attrs, 625a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 626a07b4970SChristoph Hellwig }; 627a07b4970SChristoph Hellwig 628a07b4970SChristoph Hellwig static struct config_group *nvmet_ns_make(struct config_group *group, 629a07b4970SChristoph Hellwig const char *name) 630a07b4970SChristoph Hellwig { 631a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = namespaces_to_subsys(&group->cg_item); 632a07b4970SChristoph Hellwig struct nvmet_ns *ns; 633a07b4970SChristoph Hellwig int ret; 634a07b4970SChristoph Hellwig u32 nsid; 635a07b4970SChristoph Hellwig 636a07b4970SChristoph Hellwig ret = kstrtou32(name, 0, &nsid); 637a07b4970SChristoph Hellwig if (ret) 638a07b4970SChristoph Hellwig goto out; 639a07b4970SChristoph Hellwig 640a07b4970SChristoph Hellwig ret = -EINVAL; 6415ba89503SMikhail Skorzhinskii if (nsid == 0 || nsid == NVME_NSID_ALL) { 6425ba89503SMikhail Skorzhinskii pr_err("invalid nsid %#x", nsid); 643a07b4970SChristoph Hellwig goto out; 6445ba89503SMikhail Skorzhinskii } 645a07b4970SChristoph Hellwig 646a07b4970SChristoph Hellwig ret = -ENOMEM; 647a07b4970SChristoph Hellwig ns = nvmet_ns_alloc(subsys, nsid); 648a07b4970SChristoph Hellwig if (!ns) 649a07b4970SChristoph Hellwig goto out; 650a07b4970SChristoph Hellwig config_group_init_type_name(&ns->group, name, &nvmet_ns_type); 651a07b4970SChristoph Hellwig 652a07b4970SChristoph Hellwig pr_info("adding nsid %d to subsystem %s\n", nsid, subsys->subsysnqn); 653a07b4970SChristoph Hellwig 654a07b4970SChristoph Hellwig return &ns->group; 655a07b4970SChristoph Hellwig out: 656a07b4970SChristoph Hellwig return ERR_PTR(ret); 657a07b4970SChristoph Hellwig } 658a07b4970SChristoph Hellwig 659a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_namespaces_group_ops = { 660a07b4970SChristoph Hellwig .make_group = nvmet_ns_make, 661a07b4970SChristoph Hellwig }; 662a07b4970SChristoph Hellwig 66366603a31SBhumika Goyal static const struct config_item_type nvmet_namespaces_type = { 664a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_namespaces_group_ops, 665a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 666a07b4970SChristoph Hellwig }; 667a07b4970SChristoph Hellwig 668cae5b01aSLogan Gunthorpe #ifdef CONFIG_NVME_TARGET_PASSTHRU 669cae5b01aSLogan Gunthorpe 670cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_device_path_show(struct config_item *item, 671cae5b01aSLogan Gunthorpe char *page) 672cae5b01aSLogan Gunthorpe { 673cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 674cae5b01aSLogan Gunthorpe 675cae5b01aSLogan Gunthorpe return snprintf(page, PAGE_SIZE, "%s\n", subsys->passthru_ctrl_path); 676cae5b01aSLogan Gunthorpe } 677cae5b01aSLogan Gunthorpe 678cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_device_path_store(struct config_item *item, 679cae5b01aSLogan Gunthorpe const char *page, size_t count) 680cae5b01aSLogan Gunthorpe { 681cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 682cae5b01aSLogan Gunthorpe size_t len; 683cae5b01aSLogan Gunthorpe int ret; 684cae5b01aSLogan Gunthorpe 685cae5b01aSLogan Gunthorpe mutex_lock(&subsys->lock); 686cae5b01aSLogan Gunthorpe 687cae5b01aSLogan Gunthorpe ret = -EBUSY; 688cae5b01aSLogan Gunthorpe if (subsys->passthru_ctrl) 689cae5b01aSLogan Gunthorpe goto out_unlock; 690cae5b01aSLogan Gunthorpe 691cae5b01aSLogan Gunthorpe ret = -EINVAL; 692cae5b01aSLogan Gunthorpe len = strcspn(page, "\n"); 693cae5b01aSLogan Gunthorpe if (!len) 694cae5b01aSLogan Gunthorpe goto out_unlock; 695cae5b01aSLogan Gunthorpe 696cae5b01aSLogan Gunthorpe kfree(subsys->passthru_ctrl_path); 697cae5b01aSLogan Gunthorpe ret = -ENOMEM; 698cae5b01aSLogan Gunthorpe subsys->passthru_ctrl_path = kstrndup(page, len, GFP_KERNEL); 699cae5b01aSLogan Gunthorpe if (!subsys->passthru_ctrl_path) 700cae5b01aSLogan Gunthorpe goto out_unlock; 701cae5b01aSLogan Gunthorpe 702cae5b01aSLogan Gunthorpe mutex_unlock(&subsys->lock); 703cae5b01aSLogan Gunthorpe 704cae5b01aSLogan Gunthorpe return count; 705cae5b01aSLogan Gunthorpe out_unlock: 706cae5b01aSLogan Gunthorpe mutex_unlock(&subsys->lock); 707cae5b01aSLogan Gunthorpe return ret; 708cae5b01aSLogan Gunthorpe } 709cae5b01aSLogan Gunthorpe CONFIGFS_ATTR(nvmet_passthru_, device_path); 710cae5b01aSLogan Gunthorpe 711cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_enable_show(struct config_item *item, 712cae5b01aSLogan Gunthorpe char *page) 713cae5b01aSLogan Gunthorpe { 714cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 715cae5b01aSLogan Gunthorpe 716cae5b01aSLogan Gunthorpe return sprintf(page, "%d\n", subsys->passthru_ctrl ? 1 : 0); 717cae5b01aSLogan Gunthorpe } 718cae5b01aSLogan Gunthorpe 719cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_enable_store(struct config_item *item, 720cae5b01aSLogan Gunthorpe const char *page, size_t count) 721cae5b01aSLogan Gunthorpe { 722cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 723cae5b01aSLogan Gunthorpe bool enable; 724cae5b01aSLogan Gunthorpe int ret = 0; 725cae5b01aSLogan Gunthorpe 726cae5b01aSLogan Gunthorpe if (strtobool(page, &enable)) 727cae5b01aSLogan Gunthorpe return -EINVAL; 728cae5b01aSLogan Gunthorpe 729cae5b01aSLogan Gunthorpe if (enable) 730cae5b01aSLogan Gunthorpe ret = nvmet_passthru_ctrl_enable(subsys); 731cae5b01aSLogan Gunthorpe else 732cae5b01aSLogan Gunthorpe nvmet_passthru_ctrl_disable(subsys); 733cae5b01aSLogan Gunthorpe 734cae5b01aSLogan Gunthorpe return ret ? ret : count; 735cae5b01aSLogan Gunthorpe } 736cae5b01aSLogan Gunthorpe CONFIGFS_ATTR(nvmet_passthru_, enable); 737cae5b01aSLogan Gunthorpe 738a2f6a2b8SChaitanya Kulkarni static ssize_t nvmet_passthru_admin_timeout_show(struct config_item *item, 739a2f6a2b8SChaitanya Kulkarni char *page) 740a2f6a2b8SChaitanya Kulkarni { 741a2f6a2b8SChaitanya Kulkarni return sprintf(page, "%u\n", to_subsys(item->ci_parent)->admin_timeout); 742a2f6a2b8SChaitanya Kulkarni } 743a2f6a2b8SChaitanya Kulkarni 744a2f6a2b8SChaitanya Kulkarni static ssize_t nvmet_passthru_admin_timeout_store(struct config_item *item, 745a2f6a2b8SChaitanya Kulkarni const char *page, size_t count) 746a2f6a2b8SChaitanya Kulkarni { 747a2f6a2b8SChaitanya Kulkarni struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 748a2f6a2b8SChaitanya Kulkarni unsigned int timeout; 749a2f6a2b8SChaitanya Kulkarni 750a2f6a2b8SChaitanya Kulkarni if (kstrtouint(page, 0, &timeout)) 751a2f6a2b8SChaitanya Kulkarni return -EINVAL; 752a2f6a2b8SChaitanya Kulkarni subsys->admin_timeout = timeout; 753a2f6a2b8SChaitanya Kulkarni return count; 754a2f6a2b8SChaitanya Kulkarni } 755a2f6a2b8SChaitanya Kulkarni CONFIGFS_ATTR(nvmet_passthru_, admin_timeout); 756a2f6a2b8SChaitanya Kulkarni 75747e9730cSChaitanya Kulkarni static ssize_t nvmet_passthru_io_timeout_show(struct config_item *item, 75847e9730cSChaitanya Kulkarni char *page) 75947e9730cSChaitanya Kulkarni { 76047e9730cSChaitanya Kulkarni return sprintf(page, "%u\n", to_subsys(item->ci_parent)->io_timeout); 76147e9730cSChaitanya Kulkarni } 76247e9730cSChaitanya Kulkarni 76347e9730cSChaitanya Kulkarni static ssize_t nvmet_passthru_io_timeout_store(struct config_item *item, 76447e9730cSChaitanya Kulkarni const char *page, size_t count) 76547e9730cSChaitanya Kulkarni { 76647e9730cSChaitanya Kulkarni struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 76747e9730cSChaitanya Kulkarni unsigned int timeout; 76847e9730cSChaitanya Kulkarni 76947e9730cSChaitanya Kulkarni if (kstrtouint(page, 0, &timeout)) 77047e9730cSChaitanya Kulkarni return -EINVAL; 77147e9730cSChaitanya Kulkarni subsys->io_timeout = timeout; 77247e9730cSChaitanya Kulkarni return count; 77347e9730cSChaitanya Kulkarni } 77447e9730cSChaitanya Kulkarni CONFIGFS_ATTR(nvmet_passthru_, io_timeout); 77547e9730cSChaitanya Kulkarni 776*34ad6151SAlan Adamson static ssize_t nvmet_passthru_clear_ids_show(struct config_item *item, 777*34ad6151SAlan Adamson char *page) 778*34ad6151SAlan Adamson { 779*34ad6151SAlan Adamson return sprintf(page, "%u\n", to_subsys(item->ci_parent)->clear_ids); 780*34ad6151SAlan Adamson } 781*34ad6151SAlan Adamson 782*34ad6151SAlan Adamson static ssize_t nvmet_passthru_clear_ids_store(struct config_item *item, 783*34ad6151SAlan Adamson const char *page, size_t count) 784*34ad6151SAlan Adamson { 785*34ad6151SAlan Adamson struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 786*34ad6151SAlan Adamson unsigned int clear_ids; 787*34ad6151SAlan Adamson 788*34ad6151SAlan Adamson if (kstrtouint(page, 0, &clear_ids)) 789*34ad6151SAlan Adamson return -EINVAL; 790*34ad6151SAlan Adamson subsys->clear_ids = clear_ids; 791*34ad6151SAlan Adamson return count; 792*34ad6151SAlan Adamson } 793*34ad6151SAlan Adamson CONFIGFS_ATTR(nvmet_passthru_, clear_ids); 794*34ad6151SAlan Adamson 795cae5b01aSLogan Gunthorpe static struct configfs_attribute *nvmet_passthru_attrs[] = { 796cae5b01aSLogan Gunthorpe &nvmet_passthru_attr_device_path, 797cae5b01aSLogan Gunthorpe &nvmet_passthru_attr_enable, 798a2f6a2b8SChaitanya Kulkarni &nvmet_passthru_attr_admin_timeout, 79947e9730cSChaitanya Kulkarni &nvmet_passthru_attr_io_timeout, 800*34ad6151SAlan Adamson &nvmet_passthru_attr_clear_ids, 801cae5b01aSLogan Gunthorpe NULL, 802cae5b01aSLogan Gunthorpe }; 803cae5b01aSLogan Gunthorpe 804cae5b01aSLogan Gunthorpe static const struct config_item_type nvmet_passthru_type = { 805cae5b01aSLogan Gunthorpe .ct_attrs = nvmet_passthru_attrs, 806cae5b01aSLogan Gunthorpe .ct_owner = THIS_MODULE, 807cae5b01aSLogan Gunthorpe }; 808cae5b01aSLogan Gunthorpe 809cae5b01aSLogan Gunthorpe static void nvmet_add_passthru_group(struct nvmet_subsys *subsys) 810cae5b01aSLogan Gunthorpe { 811cae5b01aSLogan Gunthorpe config_group_init_type_name(&subsys->passthru_group, 812cae5b01aSLogan Gunthorpe "passthru", &nvmet_passthru_type); 813cae5b01aSLogan Gunthorpe configfs_add_default_group(&subsys->passthru_group, 814cae5b01aSLogan Gunthorpe &subsys->group); 815cae5b01aSLogan Gunthorpe } 816cae5b01aSLogan Gunthorpe 817cae5b01aSLogan Gunthorpe #else /* CONFIG_NVME_TARGET_PASSTHRU */ 818cae5b01aSLogan Gunthorpe 819cae5b01aSLogan Gunthorpe static void nvmet_add_passthru_group(struct nvmet_subsys *subsys) 820cae5b01aSLogan Gunthorpe { 821cae5b01aSLogan Gunthorpe } 822cae5b01aSLogan Gunthorpe 823cae5b01aSLogan Gunthorpe #endif /* CONFIG_NVME_TARGET_PASSTHRU */ 824cae5b01aSLogan Gunthorpe 825a07b4970SChristoph Hellwig static int nvmet_port_subsys_allow_link(struct config_item *parent, 826a07b4970SChristoph Hellwig struct config_item *target) 827a07b4970SChristoph Hellwig { 828a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(parent->ci_parent); 829a07b4970SChristoph Hellwig struct nvmet_subsys *subsys; 830a07b4970SChristoph Hellwig struct nvmet_subsys_link *link, *p; 831a07b4970SChristoph Hellwig int ret; 832a07b4970SChristoph Hellwig 833a07b4970SChristoph Hellwig if (target->ci_type != &nvmet_subsys_type) { 834a07b4970SChristoph Hellwig pr_err("can only link subsystems into the subsystems dir.!\n"); 835a07b4970SChristoph Hellwig return -EINVAL; 836a07b4970SChristoph Hellwig } 837a07b4970SChristoph Hellwig subsys = to_subsys(target); 838a07b4970SChristoph Hellwig link = kmalloc(sizeof(*link), GFP_KERNEL); 839a07b4970SChristoph Hellwig if (!link) 840a07b4970SChristoph Hellwig return -ENOMEM; 841a07b4970SChristoph Hellwig link->subsys = subsys; 842a07b4970SChristoph Hellwig 843a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 844a07b4970SChristoph Hellwig ret = -EEXIST; 845a07b4970SChristoph Hellwig list_for_each_entry(p, &port->subsystems, entry) { 846a07b4970SChristoph Hellwig if (p->subsys == subsys) 847a07b4970SChristoph Hellwig goto out_free_link; 848a07b4970SChristoph Hellwig } 849a07b4970SChristoph Hellwig 850a07b4970SChristoph Hellwig if (list_empty(&port->subsystems)) { 851a07b4970SChristoph Hellwig ret = nvmet_enable_port(port); 852a07b4970SChristoph Hellwig if (ret) 853a07b4970SChristoph Hellwig goto out_free_link; 854a07b4970SChristoph Hellwig } 855a07b4970SChristoph Hellwig 856a07b4970SChristoph Hellwig list_add_tail(&link->entry, &port->subsystems); 857b662a078SJay Sternberg nvmet_port_disc_changed(port, subsys); 858b662a078SJay Sternberg 859a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 860a07b4970SChristoph Hellwig return 0; 861a07b4970SChristoph Hellwig 862a07b4970SChristoph Hellwig out_free_link: 863a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 864a07b4970SChristoph Hellwig kfree(link); 865a07b4970SChristoph Hellwig return ret; 866a07b4970SChristoph Hellwig } 867a07b4970SChristoph Hellwig 868e16769d4SAndrzej Pietrasiewicz static void nvmet_port_subsys_drop_link(struct config_item *parent, 869a07b4970SChristoph Hellwig struct config_item *target) 870a07b4970SChristoph Hellwig { 871a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(parent->ci_parent); 872a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(target); 873a07b4970SChristoph Hellwig struct nvmet_subsys_link *p; 874a07b4970SChristoph Hellwig 875a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 876a07b4970SChristoph Hellwig list_for_each_entry(p, &port->subsystems, entry) { 877a07b4970SChristoph Hellwig if (p->subsys == subsys) 878a07b4970SChristoph Hellwig goto found; 879a07b4970SChristoph Hellwig } 880a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 881e16769d4SAndrzej Pietrasiewicz return; 882a07b4970SChristoph Hellwig 883a07b4970SChristoph Hellwig found: 884a07b4970SChristoph Hellwig list_del(&p->entry); 8853aed8673SLogan Gunthorpe nvmet_port_del_ctrls(port, subsys); 886b662a078SJay Sternberg nvmet_port_disc_changed(port, subsys); 887b662a078SJay Sternberg 888a07b4970SChristoph Hellwig if (list_empty(&port->subsystems)) 889a07b4970SChristoph Hellwig nvmet_disable_port(port); 890a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 891a07b4970SChristoph Hellwig kfree(p); 892a07b4970SChristoph Hellwig } 893a07b4970SChristoph Hellwig 894a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_port_subsys_item_ops = { 895a07b4970SChristoph Hellwig .allow_link = nvmet_port_subsys_allow_link, 896a07b4970SChristoph Hellwig .drop_link = nvmet_port_subsys_drop_link, 897a07b4970SChristoph Hellwig }; 898a07b4970SChristoph Hellwig 89966603a31SBhumika Goyal static const struct config_item_type nvmet_port_subsys_type = { 900a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_port_subsys_item_ops, 901a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 902a07b4970SChristoph Hellwig }; 903a07b4970SChristoph Hellwig 904a07b4970SChristoph Hellwig static int nvmet_allowed_hosts_allow_link(struct config_item *parent, 905a07b4970SChristoph Hellwig struct config_item *target) 906a07b4970SChristoph Hellwig { 907a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(parent->ci_parent); 908a07b4970SChristoph Hellwig struct nvmet_host *host; 909a07b4970SChristoph Hellwig struct nvmet_host_link *link, *p; 910a07b4970SChristoph Hellwig int ret; 911a07b4970SChristoph Hellwig 912a07b4970SChristoph Hellwig if (target->ci_type != &nvmet_host_type) { 913a07b4970SChristoph Hellwig pr_err("can only link hosts into the allowed_hosts directory!\n"); 914a07b4970SChristoph Hellwig return -EINVAL; 915a07b4970SChristoph Hellwig } 916a07b4970SChristoph Hellwig 917a07b4970SChristoph Hellwig host = to_host(target); 918a07b4970SChristoph Hellwig link = kmalloc(sizeof(*link), GFP_KERNEL); 919a07b4970SChristoph Hellwig if (!link) 920a07b4970SChristoph Hellwig return -ENOMEM; 921a07b4970SChristoph Hellwig link->host = host; 922a07b4970SChristoph Hellwig 923a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 924a07b4970SChristoph Hellwig ret = -EINVAL; 925a07b4970SChristoph Hellwig if (subsys->allow_any_host) { 926a07b4970SChristoph Hellwig pr_err("can't add hosts when allow_any_host is set!\n"); 927a07b4970SChristoph Hellwig goto out_free_link; 928a07b4970SChristoph Hellwig } 929a07b4970SChristoph Hellwig 930a07b4970SChristoph Hellwig ret = -EEXIST; 931a07b4970SChristoph Hellwig list_for_each_entry(p, &subsys->hosts, entry) { 932a07b4970SChristoph Hellwig if (!strcmp(nvmet_host_name(p->host), nvmet_host_name(host))) 933a07b4970SChristoph Hellwig goto out_free_link; 934a07b4970SChristoph Hellwig } 935a07b4970SChristoph Hellwig list_add_tail(&link->entry, &subsys->hosts); 936b662a078SJay Sternberg nvmet_subsys_disc_changed(subsys, host); 937b662a078SJay Sternberg 938a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 939a07b4970SChristoph Hellwig return 0; 940a07b4970SChristoph Hellwig out_free_link: 941a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 942a07b4970SChristoph Hellwig kfree(link); 943a07b4970SChristoph Hellwig return ret; 944a07b4970SChristoph Hellwig } 945a07b4970SChristoph Hellwig 946e16769d4SAndrzej Pietrasiewicz static void nvmet_allowed_hosts_drop_link(struct config_item *parent, 947a07b4970SChristoph Hellwig struct config_item *target) 948a07b4970SChristoph Hellwig { 949a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(parent->ci_parent); 950a07b4970SChristoph Hellwig struct nvmet_host *host = to_host(target); 951a07b4970SChristoph Hellwig struct nvmet_host_link *p; 952a07b4970SChristoph Hellwig 953a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 954a07b4970SChristoph Hellwig list_for_each_entry(p, &subsys->hosts, entry) { 955a07b4970SChristoph Hellwig if (!strcmp(nvmet_host_name(p->host), nvmet_host_name(host))) 956a07b4970SChristoph Hellwig goto found; 957a07b4970SChristoph Hellwig } 958a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 959e16769d4SAndrzej Pietrasiewicz return; 960a07b4970SChristoph Hellwig 961a07b4970SChristoph Hellwig found: 962a07b4970SChristoph Hellwig list_del(&p->entry); 963b662a078SJay Sternberg nvmet_subsys_disc_changed(subsys, host); 964b662a078SJay Sternberg 965a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 966a07b4970SChristoph Hellwig kfree(p); 967a07b4970SChristoph Hellwig } 968a07b4970SChristoph Hellwig 969a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_allowed_hosts_item_ops = { 970a07b4970SChristoph Hellwig .allow_link = nvmet_allowed_hosts_allow_link, 971a07b4970SChristoph Hellwig .drop_link = nvmet_allowed_hosts_drop_link, 972a07b4970SChristoph Hellwig }; 973a07b4970SChristoph Hellwig 97466603a31SBhumika Goyal static const struct config_item_type nvmet_allowed_hosts_type = { 975a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_allowed_hosts_item_ops, 976a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 977a07b4970SChristoph Hellwig }; 978a07b4970SChristoph Hellwig 979a07b4970SChristoph Hellwig static ssize_t nvmet_subsys_attr_allow_any_host_show(struct config_item *item, 980a07b4970SChristoph Hellwig char *page) 981a07b4970SChristoph Hellwig { 982a07b4970SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%d\n", 983a07b4970SChristoph Hellwig to_subsys(item)->allow_any_host); 984a07b4970SChristoph Hellwig } 985a07b4970SChristoph Hellwig 986a07b4970SChristoph Hellwig static ssize_t nvmet_subsys_attr_allow_any_host_store(struct config_item *item, 987a07b4970SChristoph Hellwig const char *page, size_t count) 988a07b4970SChristoph Hellwig { 989a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(item); 990a07b4970SChristoph Hellwig bool allow_any_host; 991a07b4970SChristoph Hellwig int ret = 0; 992a07b4970SChristoph Hellwig 993a07b4970SChristoph Hellwig if (strtobool(page, &allow_any_host)) 994a07b4970SChristoph Hellwig return -EINVAL; 995a07b4970SChristoph Hellwig 996a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 997a07b4970SChristoph Hellwig if (allow_any_host && !list_empty(&subsys->hosts)) { 998a07b4970SChristoph Hellwig pr_err("Can't set allow_any_host when explicit hosts are set!\n"); 999a07b4970SChristoph Hellwig ret = -EINVAL; 1000a07b4970SChristoph Hellwig goto out_unlock; 1001a07b4970SChristoph Hellwig } 1002a07b4970SChristoph Hellwig 1003b662a078SJay Sternberg if (subsys->allow_any_host != allow_any_host) { 1004a07b4970SChristoph Hellwig subsys->allow_any_host = allow_any_host; 1005b662a078SJay Sternberg nvmet_subsys_disc_changed(subsys, NULL); 1006b662a078SJay Sternberg } 1007b662a078SJay Sternberg 1008a07b4970SChristoph Hellwig out_unlock: 1009a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 1010a07b4970SChristoph Hellwig return ret ? ret : count; 1011a07b4970SChristoph Hellwig } 1012a07b4970SChristoph Hellwig 1013a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_subsys_, attr_allow_any_host); 1014a07b4970SChristoph Hellwig 101541528f80SJohannes Thumshirn static ssize_t nvmet_subsys_attr_version_show(struct config_item *item, 1016c61d788bSJohannes Thumshirn char *page) 1017c61d788bSJohannes Thumshirn { 1018c61d788bSJohannes Thumshirn struct nvmet_subsys *subsys = to_subsys(item); 1019c61d788bSJohannes Thumshirn 1020c61d788bSJohannes Thumshirn if (NVME_TERTIARY(subsys->ver)) 1021a0f0dbaaSChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%llu.%llu.%llu\n", 1022a0f0dbaaSChaitanya Kulkarni NVME_MAJOR(subsys->ver), 1023a0f0dbaaSChaitanya Kulkarni NVME_MINOR(subsys->ver), 1024a0f0dbaaSChaitanya Kulkarni NVME_TERTIARY(subsys->ver)); 1025527123c7SChaitanya Kulkarni 1026a0f0dbaaSChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%llu.%llu\n", 1027a0f0dbaaSChaitanya Kulkarni NVME_MAJOR(subsys->ver), 1028a0f0dbaaSChaitanya Kulkarni NVME_MINOR(subsys->ver)); 1029c61d788bSJohannes Thumshirn } 1030c61d788bSJohannes Thumshirn 103187fd4cc1SNoam Gottlieb static ssize_t 103287fd4cc1SNoam Gottlieb nvmet_subsys_attr_version_store_locked(struct nvmet_subsys *subsys, 1033c61d788bSJohannes Thumshirn const char *page, size_t count) 1034c61d788bSJohannes Thumshirn { 1035c61d788bSJohannes Thumshirn int major, minor, tertiary = 0; 1036c61d788bSJohannes Thumshirn int ret; 1037c61d788bSJohannes Thumshirn 103887fd4cc1SNoam Gottlieb if (subsys->subsys_discovered) { 103987fd4cc1SNoam Gottlieb if (NVME_TERTIARY(subsys->ver)) 104087fd4cc1SNoam Gottlieb pr_err("Can't set version number. %llu.%llu.%llu is already assigned\n", 104187fd4cc1SNoam Gottlieb NVME_MAJOR(subsys->ver), 104287fd4cc1SNoam Gottlieb NVME_MINOR(subsys->ver), 104387fd4cc1SNoam Gottlieb NVME_TERTIARY(subsys->ver)); 104487fd4cc1SNoam Gottlieb else 104587fd4cc1SNoam Gottlieb pr_err("Can't set version number. %llu.%llu is already assigned\n", 104687fd4cc1SNoam Gottlieb NVME_MAJOR(subsys->ver), 104787fd4cc1SNoam Gottlieb NVME_MINOR(subsys->ver)); 104887fd4cc1SNoam Gottlieb return -EINVAL; 104987fd4cc1SNoam Gottlieb } 105087fd4cc1SNoam Gottlieb 1051ba76af67SLogan Gunthorpe /* passthru subsystems use the underlying controller's version */ 1052ab7a2737SChristoph Hellwig if (nvmet_is_passthru_subsys(subsys)) 1053ba76af67SLogan Gunthorpe return -EINVAL; 1054ba76af67SLogan Gunthorpe 1055c61d788bSJohannes Thumshirn ret = sscanf(page, "%d.%d.%d\n", &major, &minor, &tertiary); 1056c61d788bSJohannes Thumshirn if (ret != 2 && ret != 3) 1057c61d788bSJohannes Thumshirn return -EINVAL; 1058c61d788bSJohannes Thumshirn 1059c61d788bSJohannes Thumshirn subsys->ver = NVME_VS(major, minor, tertiary); 1060c61d788bSJohannes Thumshirn 1061c61d788bSJohannes Thumshirn return count; 1062c61d788bSJohannes Thumshirn } 106387fd4cc1SNoam Gottlieb 106487fd4cc1SNoam Gottlieb static ssize_t nvmet_subsys_attr_version_store(struct config_item *item, 106587fd4cc1SNoam Gottlieb const char *page, size_t count) 106687fd4cc1SNoam Gottlieb { 106787fd4cc1SNoam Gottlieb struct nvmet_subsys *subsys = to_subsys(item); 106887fd4cc1SNoam Gottlieb ssize_t ret; 106987fd4cc1SNoam Gottlieb 107087fd4cc1SNoam Gottlieb down_write(&nvmet_config_sem); 107187fd4cc1SNoam Gottlieb mutex_lock(&subsys->lock); 107287fd4cc1SNoam Gottlieb ret = nvmet_subsys_attr_version_store_locked(subsys, page, count); 107387fd4cc1SNoam Gottlieb mutex_unlock(&subsys->lock); 107487fd4cc1SNoam Gottlieb up_write(&nvmet_config_sem); 107587fd4cc1SNoam Gottlieb 107687fd4cc1SNoam Gottlieb return ret; 107787fd4cc1SNoam Gottlieb } 107841528f80SJohannes Thumshirn CONFIGFS_ATTR(nvmet_subsys_, attr_version); 1079c61d788bSJohannes Thumshirn 1080e13b0615SNoam Gottlieb /* See Section 1.5 of NVMe 1.4 */ 1081e13b0615SNoam Gottlieb static bool nvmet_is_ascii(const char c) 1082e13b0615SNoam Gottlieb { 1083e13b0615SNoam Gottlieb return c >= 0x20 && c <= 0x7e; 1084e13b0615SNoam Gottlieb } 1085e13b0615SNoam Gottlieb 1086fcbc5459SJohannes Thumshirn static ssize_t nvmet_subsys_attr_serial_show(struct config_item *item, 1087fcbc5459SJohannes Thumshirn char *page) 1088fcbc5459SJohannes Thumshirn { 1089fcbc5459SJohannes Thumshirn struct nvmet_subsys *subsys = to_subsys(item); 1090fcbc5459SJohannes Thumshirn 10910bd46e22SDan Carpenter return snprintf(page, PAGE_SIZE, "%.*s\n", 1092f0406481SHannes Reinecke NVMET_SN_MAX_SIZE, subsys->serial); 1093fcbc5459SJohannes Thumshirn } 1094fcbc5459SJohannes Thumshirn 10957ae023c5SNoam Gottlieb static ssize_t 10967ae023c5SNoam Gottlieb nvmet_subsys_attr_serial_store_locked(struct nvmet_subsys *subsys, 1097fcbc5459SJohannes Thumshirn const char *page, size_t count) 1098fcbc5459SJohannes Thumshirn { 1099e13b0615SNoam Gottlieb int pos, len = strcspn(page, "\n"); 1100d3a9b0caSChaitanya Kulkarni 11017ae023c5SNoam Gottlieb if (subsys->subsys_discovered) { 11027ae023c5SNoam Gottlieb pr_err("Can't set serial number. %s is already assigned\n", 11037ae023c5SNoam Gottlieb subsys->serial); 11047ae023c5SNoam Gottlieb return -EINVAL; 11057ae023c5SNoam Gottlieb } 11067ae023c5SNoam Gottlieb 1107e13b0615SNoam Gottlieb if (!len || len > NVMET_SN_MAX_SIZE) { 1108e13b0615SNoam Gottlieb pr_err("Serial Number can not be empty or exceed %d Bytes\n", 1109e13b0615SNoam Gottlieb NVMET_SN_MAX_SIZE); 1110d3a9b0caSChaitanya Kulkarni return -EINVAL; 1111e13b0615SNoam Gottlieb } 1112e13b0615SNoam Gottlieb 1113e13b0615SNoam Gottlieb for (pos = 0; pos < len; pos++) { 1114e13b0615SNoam Gottlieb if (!nvmet_is_ascii(page[pos])) { 1115e13b0615SNoam Gottlieb pr_err("Serial Number must contain only ASCII strings\n"); 1116e13b0615SNoam Gottlieb return -EINVAL; 1117e13b0615SNoam Gottlieb } 1118e13b0615SNoam Gottlieb } 1119fcbc5459SJohannes Thumshirn 11207ae023c5SNoam Gottlieb memcpy_and_pad(subsys->serial, NVMET_SN_MAX_SIZE, page, len, ' '); 11217ae023c5SNoam Gottlieb 11227ae023c5SNoam Gottlieb return count; 11237ae023c5SNoam Gottlieb } 11247ae023c5SNoam Gottlieb 11257ae023c5SNoam Gottlieb static ssize_t nvmet_subsys_attr_serial_store(struct config_item *item, 11267ae023c5SNoam Gottlieb const char *page, size_t count) 11277ae023c5SNoam Gottlieb { 11287ae023c5SNoam Gottlieb struct nvmet_subsys *subsys = to_subsys(item); 11297ae023c5SNoam Gottlieb ssize_t ret; 11307ae023c5SNoam Gottlieb 1131fcbc5459SJohannes Thumshirn down_write(&nvmet_config_sem); 1132e13b0615SNoam Gottlieb mutex_lock(&subsys->lock); 11337ae023c5SNoam Gottlieb ret = nvmet_subsys_attr_serial_store_locked(subsys, page, count); 1134e13b0615SNoam Gottlieb mutex_unlock(&subsys->lock); 1135fcbc5459SJohannes Thumshirn up_write(&nvmet_config_sem); 1136fcbc5459SJohannes Thumshirn 11377ae023c5SNoam Gottlieb return ret; 1138fcbc5459SJohannes Thumshirn } 1139fcbc5459SJohannes Thumshirn CONFIGFS_ATTR(nvmet_subsys_, attr_serial); 1140fcbc5459SJohannes Thumshirn 114194a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_min_show(struct config_item *item, 114294a39d61SChaitanya Kulkarni char *page) 114394a39d61SChaitanya Kulkarni { 114494a39d61SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->cntlid_min); 114594a39d61SChaitanya Kulkarni } 114694a39d61SChaitanya Kulkarni 114794a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_min_store(struct config_item *item, 114894a39d61SChaitanya Kulkarni const char *page, size_t cnt) 114994a39d61SChaitanya Kulkarni { 115094a39d61SChaitanya Kulkarni u16 cntlid_min; 115194a39d61SChaitanya Kulkarni 115294a39d61SChaitanya Kulkarni if (sscanf(page, "%hu\n", &cntlid_min) != 1) 115394a39d61SChaitanya Kulkarni return -EINVAL; 115494a39d61SChaitanya Kulkarni 115594a39d61SChaitanya Kulkarni if (cntlid_min == 0) 115694a39d61SChaitanya Kulkarni return -EINVAL; 115794a39d61SChaitanya Kulkarni 115894a39d61SChaitanya Kulkarni down_write(&nvmet_config_sem); 115994a39d61SChaitanya Kulkarni if (cntlid_min >= to_subsys(item)->cntlid_max) 116094a39d61SChaitanya Kulkarni goto out_unlock; 116194a39d61SChaitanya Kulkarni to_subsys(item)->cntlid_min = cntlid_min; 116294a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 116394a39d61SChaitanya Kulkarni return cnt; 116494a39d61SChaitanya Kulkarni 116594a39d61SChaitanya Kulkarni out_unlock: 116694a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 116794a39d61SChaitanya Kulkarni return -EINVAL; 116894a39d61SChaitanya Kulkarni } 116994a39d61SChaitanya Kulkarni CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_min); 117094a39d61SChaitanya Kulkarni 117194a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_max_show(struct config_item *item, 117294a39d61SChaitanya Kulkarni char *page) 117394a39d61SChaitanya Kulkarni { 117494a39d61SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->cntlid_max); 117594a39d61SChaitanya Kulkarni } 117694a39d61SChaitanya Kulkarni 117794a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_max_store(struct config_item *item, 117894a39d61SChaitanya Kulkarni const char *page, size_t cnt) 117994a39d61SChaitanya Kulkarni { 118094a39d61SChaitanya Kulkarni u16 cntlid_max; 118194a39d61SChaitanya Kulkarni 118294a39d61SChaitanya Kulkarni if (sscanf(page, "%hu\n", &cntlid_max) != 1) 118394a39d61SChaitanya Kulkarni return -EINVAL; 118494a39d61SChaitanya Kulkarni 118594a39d61SChaitanya Kulkarni if (cntlid_max == 0) 118694a39d61SChaitanya Kulkarni return -EINVAL; 118794a39d61SChaitanya Kulkarni 118894a39d61SChaitanya Kulkarni down_write(&nvmet_config_sem); 118994a39d61SChaitanya Kulkarni if (cntlid_max <= to_subsys(item)->cntlid_min) 119094a39d61SChaitanya Kulkarni goto out_unlock; 119194a39d61SChaitanya Kulkarni to_subsys(item)->cntlid_max = cntlid_max; 119294a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 119394a39d61SChaitanya Kulkarni return cnt; 119494a39d61SChaitanya Kulkarni 119594a39d61SChaitanya Kulkarni out_unlock: 119694a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 119794a39d61SChaitanya Kulkarni return -EINVAL; 119894a39d61SChaitanya Kulkarni } 119994a39d61SChaitanya Kulkarni CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_max); 120094a39d61SChaitanya Kulkarni 1201013b7ebeSMark Ruijter static ssize_t nvmet_subsys_attr_model_show(struct config_item *item, 1202013b7ebeSMark Ruijter char *page) 1203013b7ebeSMark Ruijter { 1204013b7ebeSMark Ruijter struct nvmet_subsys *subsys = to_subsys(item); 1205013b7ebeSMark Ruijter 12060d148efdSNoam Gottlieb return snprintf(page, PAGE_SIZE, "%s\n", subsys->model_number); 1207013b7ebeSMark Ruijter } 1208013b7ebeSMark Ruijter 1209d9f273b7SMax Gurtovoy static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys, 1210013b7ebeSMark Ruijter const char *page, size_t count) 1211013b7ebeSMark Ruijter { 1212013b7ebeSMark Ruijter int pos = 0, len; 1213013b7ebeSMark Ruijter 12140d148efdSNoam Gottlieb if (subsys->subsys_discovered) { 1215d9f273b7SMax Gurtovoy pr_err("Can't set model number. %s is already assigned\n", 1216d9f273b7SMax Gurtovoy subsys->model_number); 1217d9f273b7SMax Gurtovoy return -EINVAL; 1218d9f273b7SMax Gurtovoy } 1219d9f273b7SMax Gurtovoy 1220013b7ebeSMark Ruijter len = strcspn(page, "\n"); 1221013b7ebeSMark Ruijter if (!len) 1222013b7ebeSMark Ruijter return -EINVAL; 1223013b7ebeSMark Ruijter 122448b4c010SNoam Gottlieb if (len > NVMET_MN_MAX_SIZE) { 1225ccc1003bSColin Ian King pr_err("Model number size can not exceed %d Bytes\n", 122648b4c010SNoam Gottlieb NVMET_MN_MAX_SIZE); 122748b4c010SNoam Gottlieb return -EINVAL; 122848b4c010SNoam Gottlieb } 122948b4c010SNoam Gottlieb 1230013b7ebeSMark Ruijter for (pos = 0; pos < len; pos++) { 1231013b7ebeSMark Ruijter if (!nvmet_is_ascii(page[pos])) 1232013b7ebeSMark Ruijter return -EINVAL; 1233013b7ebeSMark Ruijter } 1234013b7ebeSMark Ruijter 1235d9f273b7SMax Gurtovoy subsys->model_number = kmemdup_nul(page, len, GFP_KERNEL); 1236d9f273b7SMax Gurtovoy if (!subsys->model_number) 1237013b7ebeSMark Ruijter return -ENOMEM; 1238d9f273b7SMax Gurtovoy return count; 1239013b7ebeSMark Ruijter } 1240d9f273b7SMax Gurtovoy 1241d9f273b7SMax Gurtovoy static ssize_t nvmet_subsys_attr_model_store(struct config_item *item, 1242d9f273b7SMax Gurtovoy const char *page, size_t count) 1243d9f273b7SMax Gurtovoy { 1244d9f273b7SMax Gurtovoy struct nvmet_subsys *subsys = to_subsys(item); 1245d9f273b7SMax Gurtovoy ssize_t ret; 1246013b7ebeSMark Ruijter 1247013b7ebeSMark Ruijter down_write(&nvmet_config_sem); 1248013b7ebeSMark Ruijter mutex_lock(&subsys->lock); 1249d9f273b7SMax Gurtovoy ret = nvmet_subsys_attr_model_store_locked(subsys, page, count); 1250013b7ebeSMark Ruijter mutex_unlock(&subsys->lock); 1251013b7ebeSMark Ruijter up_write(&nvmet_config_sem); 1252013b7ebeSMark Ruijter 1253d9f273b7SMax Gurtovoy return ret; 1254013b7ebeSMark Ruijter } 1255013b7ebeSMark Ruijter CONFIGFS_ATTR(nvmet_subsys_, attr_model); 1256013b7ebeSMark Ruijter 1257ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 1258ea52ac1cSIsrael Rukshin static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item, 1259ea52ac1cSIsrael Rukshin char *page) 1260ea52ac1cSIsrael Rukshin { 1261ea52ac1cSIsrael Rukshin return snprintf(page, PAGE_SIZE, "%d\n", to_subsys(item)->pi_support); 1262ea52ac1cSIsrael Rukshin } 1263ea52ac1cSIsrael Rukshin 1264ea52ac1cSIsrael Rukshin static ssize_t nvmet_subsys_attr_pi_enable_store(struct config_item *item, 1265ea52ac1cSIsrael Rukshin const char *page, size_t count) 1266ea52ac1cSIsrael Rukshin { 1267ea52ac1cSIsrael Rukshin struct nvmet_subsys *subsys = to_subsys(item); 1268ea52ac1cSIsrael Rukshin bool pi_enable; 1269ea52ac1cSIsrael Rukshin 1270ea52ac1cSIsrael Rukshin if (strtobool(page, &pi_enable)) 1271ea52ac1cSIsrael Rukshin return -EINVAL; 1272ea52ac1cSIsrael Rukshin 1273ea52ac1cSIsrael Rukshin subsys->pi_support = pi_enable; 1274ea52ac1cSIsrael Rukshin return count; 1275ea52ac1cSIsrael Rukshin } 1276ea52ac1cSIsrael Rukshin CONFIGFS_ATTR(nvmet_subsys_, attr_pi_enable); 1277ea52ac1cSIsrael Rukshin #endif 1278ea52ac1cSIsrael Rukshin 1279a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_subsys_attrs[] = { 1280a07b4970SChristoph Hellwig &nvmet_subsys_attr_attr_allow_any_host, 128141528f80SJohannes Thumshirn &nvmet_subsys_attr_attr_version, 1282fcbc5459SJohannes Thumshirn &nvmet_subsys_attr_attr_serial, 128394a39d61SChaitanya Kulkarni &nvmet_subsys_attr_attr_cntlid_min, 128494a39d61SChaitanya Kulkarni &nvmet_subsys_attr_attr_cntlid_max, 1285013b7ebeSMark Ruijter &nvmet_subsys_attr_attr_model, 1286ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 1287ea52ac1cSIsrael Rukshin &nvmet_subsys_attr_attr_pi_enable, 1288ea52ac1cSIsrael Rukshin #endif 1289a07b4970SChristoph Hellwig NULL, 1290a07b4970SChristoph Hellwig }; 1291a07b4970SChristoph Hellwig 1292a07b4970SChristoph Hellwig /* 1293a07b4970SChristoph Hellwig * Subsystem structures & folder operation functions below 1294a07b4970SChristoph Hellwig */ 1295a07b4970SChristoph Hellwig static void nvmet_subsys_release(struct config_item *item) 1296a07b4970SChristoph Hellwig { 1297a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(item); 1298a07b4970SChristoph Hellwig 1299344770b0SSagi Grimberg nvmet_subsys_del_ctrls(subsys); 1300a07b4970SChristoph Hellwig nvmet_subsys_put(subsys); 1301a07b4970SChristoph Hellwig } 1302a07b4970SChristoph Hellwig 1303a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_subsys_item_ops = { 1304a07b4970SChristoph Hellwig .release = nvmet_subsys_release, 1305a07b4970SChristoph Hellwig }; 1306a07b4970SChristoph Hellwig 130766603a31SBhumika Goyal static const struct config_item_type nvmet_subsys_type = { 1308a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_subsys_item_ops, 1309a07b4970SChristoph Hellwig .ct_attrs = nvmet_subsys_attrs, 1310a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1311a07b4970SChristoph Hellwig }; 1312a07b4970SChristoph Hellwig 1313a07b4970SChristoph Hellwig static struct config_group *nvmet_subsys_make(struct config_group *group, 1314a07b4970SChristoph Hellwig const char *name) 1315a07b4970SChristoph Hellwig { 1316a07b4970SChristoph Hellwig struct nvmet_subsys *subsys; 1317a07b4970SChristoph Hellwig 1318a07b4970SChristoph Hellwig if (sysfs_streq(name, NVME_DISC_SUBSYS_NAME)) { 1319a07b4970SChristoph Hellwig pr_err("can't create discovery subsystem through configfs\n"); 1320a07b4970SChristoph Hellwig return ERR_PTR(-EINVAL); 1321a07b4970SChristoph Hellwig } 1322a07b4970SChristoph Hellwig 1323a07b4970SChristoph Hellwig subsys = nvmet_subsys_alloc(name, NVME_NQN_NVME); 13246b7e631bSMinwoo Im if (IS_ERR(subsys)) 13256b7e631bSMinwoo Im return ERR_CAST(subsys); 1326a07b4970SChristoph Hellwig 1327a07b4970SChristoph Hellwig config_group_init_type_name(&subsys->group, name, &nvmet_subsys_type); 1328a07b4970SChristoph Hellwig 1329a07b4970SChristoph Hellwig config_group_init_type_name(&subsys->namespaces_group, 1330a07b4970SChristoph Hellwig "namespaces", &nvmet_namespaces_type); 1331a07b4970SChristoph Hellwig configfs_add_default_group(&subsys->namespaces_group, &subsys->group); 1332a07b4970SChristoph Hellwig 1333a07b4970SChristoph Hellwig config_group_init_type_name(&subsys->allowed_hosts_group, 1334a07b4970SChristoph Hellwig "allowed_hosts", &nvmet_allowed_hosts_type); 1335a07b4970SChristoph Hellwig configfs_add_default_group(&subsys->allowed_hosts_group, 1336a07b4970SChristoph Hellwig &subsys->group); 1337a07b4970SChristoph Hellwig 1338cae5b01aSLogan Gunthorpe nvmet_add_passthru_group(subsys); 1339cae5b01aSLogan Gunthorpe 1340a07b4970SChristoph Hellwig return &subsys->group; 1341a07b4970SChristoph Hellwig } 1342a07b4970SChristoph Hellwig 1343a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_subsystems_group_ops = { 1344a07b4970SChristoph Hellwig .make_group = nvmet_subsys_make, 1345a07b4970SChristoph Hellwig }; 1346a07b4970SChristoph Hellwig 134766603a31SBhumika Goyal static const struct config_item_type nvmet_subsystems_type = { 1348a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_subsystems_group_ops, 1349a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1350a07b4970SChristoph Hellwig }; 1351a07b4970SChristoph Hellwig 1352a07b4970SChristoph Hellwig static ssize_t nvmet_referral_enable_show(struct config_item *item, 1353a07b4970SChristoph Hellwig char *page) 1354a07b4970SChristoph Hellwig { 1355a07b4970SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%d\n", to_nvmet_port(item)->enabled); 1356a07b4970SChristoph Hellwig } 1357a07b4970SChristoph Hellwig 1358a07b4970SChristoph Hellwig static ssize_t nvmet_referral_enable_store(struct config_item *item, 1359a07b4970SChristoph Hellwig const char *page, size_t count) 1360a07b4970SChristoph Hellwig { 1361a07b4970SChristoph Hellwig struct nvmet_port *parent = to_nvmet_port(item->ci_parent->ci_parent); 1362a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1363a07b4970SChristoph Hellwig bool enable; 1364a07b4970SChristoph Hellwig 1365a07b4970SChristoph Hellwig if (strtobool(page, &enable)) 1366a07b4970SChristoph Hellwig goto inval; 1367a07b4970SChristoph Hellwig 1368a07b4970SChristoph Hellwig if (enable) 1369a07b4970SChristoph Hellwig nvmet_referral_enable(parent, port); 1370a07b4970SChristoph Hellwig else 1371b662a078SJay Sternberg nvmet_referral_disable(parent, port); 1372a07b4970SChristoph Hellwig 1373a07b4970SChristoph Hellwig return count; 1374a07b4970SChristoph Hellwig inval: 1375a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for enable\n", page); 1376a07b4970SChristoph Hellwig return -EINVAL; 1377a07b4970SChristoph Hellwig } 1378a07b4970SChristoph Hellwig 1379a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_referral_, enable); 1380a07b4970SChristoph Hellwig 1381a07b4970SChristoph Hellwig /* 1382a07b4970SChristoph Hellwig * Discovery Service subsystem definitions 1383a07b4970SChristoph Hellwig */ 1384a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_referral_attrs[] = { 1385a07b4970SChristoph Hellwig &nvmet_attr_addr_adrfam, 1386a07b4970SChristoph Hellwig &nvmet_attr_addr_portid, 1387a07b4970SChristoph Hellwig &nvmet_attr_addr_treq, 1388a07b4970SChristoph Hellwig &nvmet_attr_addr_traddr, 1389a07b4970SChristoph Hellwig &nvmet_attr_addr_trsvcid, 1390a07b4970SChristoph Hellwig &nvmet_attr_addr_trtype, 1391a07b4970SChristoph Hellwig &nvmet_referral_attr_enable, 1392a07b4970SChristoph Hellwig NULL, 1393a07b4970SChristoph Hellwig }; 1394a07b4970SChristoph Hellwig 1395f0e656e4SSagi Grimberg static void nvmet_referral_notify(struct config_group *group, 1396f0e656e4SSagi Grimberg struct config_item *item) 1397a07b4970SChristoph Hellwig { 1398b662a078SJay Sternberg struct nvmet_port *parent = to_nvmet_port(item->ci_parent->ci_parent); 1399a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1400a07b4970SChristoph Hellwig 1401b662a078SJay Sternberg nvmet_referral_disable(parent, port); 1402f0e656e4SSagi Grimberg } 1403f0e656e4SSagi Grimberg 1404f0e656e4SSagi Grimberg static void nvmet_referral_release(struct config_item *item) 1405f0e656e4SSagi Grimberg { 1406f0e656e4SSagi Grimberg struct nvmet_port *port = to_nvmet_port(item); 1407f0e656e4SSagi Grimberg 1408a07b4970SChristoph Hellwig kfree(port); 1409a07b4970SChristoph Hellwig } 1410a07b4970SChristoph Hellwig 1411a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_referral_item_ops = { 1412a07b4970SChristoph Hellwig .release = nvmet_referral_release, 1413a07b4970SChristoph Hellwig }; 1414a07b4970SChristoph Hellwig 141566603a31SBhumika Goyal static const struct config_item_type nvmet_referral_type = { 1416a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1417a07b4970SChristoph Hellwig .ct_attrs = nvmet_referral_attrs, 1418a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_referral_item_ops, 1419a07b4970SChristoph Hellwig }; 1420a07b4970SChristoph Hellwig 1421a07b4970SChristoph Hellwig static struct config_group *nvmet_referral_make( 1422a07b4970SChristoph Hellwig struct config_group *group, const char *name) 1423a07b4970SChristoph Hellwig { 1424a07b4970SChristoph Hellwig struct nvmet_port *port; 1425a07b4970SChristoph Hellwig 1426a07b4970SChristoph Hellwig port = kzalloc(sizeof(*port), GFP_KERNEL); 1427a07b4970SChristoph Hellwig if (!port) 1428f98d9ca1SDan Carpenter return ERR_PTR(-ENOMEM); 1429a07b4970SChristoph Hellwig 1430a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->entry); 1431a07b4970SChristoph Hellwig config_group_init_type_name(&port->group, name, &nvmet_referral_type); 1432a07b4970SChristoph Hellwig 1433a07b4970SChristoph Hellwig return &port->group; 1434a07b4970SChristoph Hellwig } 1435a07b4970SChristoph Hellwig 1436a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_referral_group_ops = { 1437a07b4970SChristoph Hellwig .make_group = nvmet_referral_make, 1438f0e656e4SSagi Grimberg .disconnect_notify = nvmet_referral_notify, 1439a07b4970SChristoph Hellwig }; 1440a07b4970SChristoph Hellwig 144166603a31SBhumika Goyal static const struct config_item_type nvmet_referrals_type = { 1442a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1443a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_referral_group_ops, 1444a07b4970SChristoph Hellwig }; 1445a07b4970SChristoph Hellwig 144674255969SChristoph Hellwig static struct nvmet_type_name_map nvmet_ana_state[] = { 144762ac0d32SChristoph Hellwig { NVME_ANA_OPTIMIZED, "optimized" }, 144862ac0d32SChristoph Hellwig { NVME_ANA_NONOPTIMIZED, "non-optimized" }, 144962ac0d32SChristoph Hellwig { NVME_ANA_INACCESSIBLE, "inaccessible" }, 145062ac0d32SChristoph Hellwig { NVME_ANA_PERSISTENT_LOSS, "persistent-loss" }, 145162ac0d32SChristoph Hellwig { NVME_ANA_CHANGE, "change" }, 145262ac0d32SChristoph Hellwig }; 145362ac0d32SChristoph Hellwig 145462ac0d32SChristoph Hellwig static ssize_t nvmet_ana_group_ana_state_show(struct config_item *item, 145562ac0d32SChristoph Hellwig char *page) 145662ac0d32SChristoph Hellwig { 145762ac0d32SChristoph Hellwig struct nvmet_ana_group *grp = to_ana_group(item); 145862ac0d32SChristoph Hellwig enum nvme_ana_state state = grp->port->ana_state[grp->grpid]; 145962ac0d32SChristoph Hellwig int i; 146062ac0d32SChristoph Hellwig 146184b8d0d7SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) { 146284b8d0d7SChaitanya Kulkarni if (state == nvmet_ana_state[i].type) 146384b8d0d7SChaitanya Kulkarni return sprintf(page, "%s\n", nvmet_ana_state[i].name); 146462ac0d32SChristoph Hellwig } 146562ac0d32SChristoph Hellwig 146662ac0d32SChristoph Hellwig return sprintf(page, "\n"); 146762ac0d32SChristoph Hellwig } 146862ac0d32SChristoph Hellwig 146962ac0d32SChristoph Hellwig static ssize_t nvmet_ana_group_ana_state_store(struct config_item *item, 147062ac0d32SChristoph Hellwig const char *page, size_t count) 147162ac0d32SChristoph Hellwig { 147262ac0d32SChristoph Hellwig struct nvmet_ana_group *grp = to_ana_group(item); 147384b8d0d7SChaitanya Kulkarni enum nvme_ana_state *ana_state = grp->port->ana_state; 147462ac0d32SChristoph Hellwig int i; 147562ac0d32SChristoph Hellwig 147684b8d0d7SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) { 147784b8d0d7SChaitanya Kulkarni if (sysfs_streq(page, nvmet_ana_state[i].name)) 147862ac0d32SChristoph Hellwig goto found; 147962ac0d32SChristoph Hellwig } 148062ac0d32SChristoph Hellwig 148162ac0d32SChristoph Hellwig pr_err("Invalid value '%s' for ana_state\n", page); 148262ac0d32SChristoph Hellwig return -EINVAL; 148362ac0d32SChristoph Hellwig 148462ac0d32SChristoph Hellwig found: 148562ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 148684b8d0d7SChaitanya Kulkarni ana_state[grp->grpid] = (enum nvme_ana_state) nvmet_ana_state[i].type; 148762ac0d32SChristoph Hellwig nvmet_ana_chgcnt++; 148862ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 148962ac0d32SChristoph Hellwig nvmet_port_send_ana_event(grp->port); 149062ac0d32SChristoph Hellwig return count; 149162ac0d32SChristoph Hellwig } 149262ac0d32SChristoph Hellwig 149362ac0d32SChristoph Hellwig CONFIGFS_ATTR(nvmet_ana_group_, ana_state); 149462ac0d32SChristoph Hellwig 149562ac0d32SChristoph Hellwig static struct configfs_attribute *nvmet_ana_group_attrs[] = { 149662ac0d32SChristoph Hellwig &nvmet_ana_group_attr_ana_state, 149762ac0d32SChristoph Hellwig NULL, 149862ac0d32SChristoph Hellwig }; 149962ac0d32SChristoph Hellwig 150062ac0d32SChristoph Hellwig static void nvmet_ana_group_release(struct config_item *item) 150162ac0d32SChristoph Hellwig { 150262ac0d32SChristoph Hellwig struct nvmet_ana_group *grp = to_ana_group(item); 150362ac0d32SChristoph Hellwig 150462ac0d32SChristoph Hellwig if (grp == &grp->port->ana_default_group) 150562ac0d32SChristoph Hellwig return; 150662ac0d32SChristoph Hellwig 150762ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 150862ac0d32SChristoph Hellwig grp->port->ana_state[grp->grpid] = NVME_ANA_INACCESSIBLE; 150962ac0d32SChristoph Hellwig nvmet_ana_group_enabled[grp->grpid]--; 151062ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 151162ac0d32SChristoph Hellwig 151262ac0d32SChristoph Hellwig nvmet_port_send_ana_event(grp->port); 151362ac0d32SChristoph Hellwig kfree(grp); 151462ac0d32SChristoph Hellwig } 151562ac0d32SChristoph Hellwig 151662ac0d32SChristoph Hellwig static struct configfs_item_operations nvmet_ana_group_item_ops = { 151762ac0d32SChristoph Hellwig .release = nvmet_ana_group_release, 151862ac0d32SChristoph Hellwig }; 151962ac0d32SChristoph Hellwig 152062ac0d32SChristoph Hellwig static const struct config_item_type nvmet_ana_group_type = { 152162ac0d32SChristoph Hellwig .ct_item_ops = &nvmet_ana_group_item_ops, 152262ac0d32SChristoph Hellwig .ct_attrs = nvmet_ana_group_attrs, 152362ac0d32SChristoph Hellwig .ct_owner = THIS_MODULE, 152462ac0d32SChristoph Hellwig }; 152562ac0d32SChristoph Hellwig 152662ac0d32SChristoph Hellwig static struct config_group *nvmet_ana_groups_make_group( 152762ac0d32SChristoph Hellwig struct config_group *group, const char *name) 152862ac0d32SChristoph Hellwig { 152962ac0d32SChristoph Hellwig struct nvmet_port *port = ana_groups_to_port(&group->cg_item); 153062ac0d32SChristoph Hellwig struct nvmet_ana_group *grp; 153162ac0d32SChristoph Hellwig u32 grpid; 153262ac0d32SChristoph Hellwig int ret; 153362ac0d32SChristoph Hellwig 153462ac0d32SChristoph Hellwig ret = kstrtou32(name, 0, &grpid); 153562ac0d32SChristoph Hellwig if (ret) 153662ac0d32SChristoph Hellwig goto out; 153762ac0d32SChristoph Hellwig 153862ac0d32SChristoph Hellwig ret = -EINVAL; 153962ac0d32SChristoph Hellwig if (grpid <= 1 || grpid > NVMET_MAX_ANAGRPS) 154062ac0d32SChristoph Hellwig goto out; 154162ac0d32SChristoph Hellwig 154262ac0d32SChristoph Hellwig ret = -ENOMEM; 154362ac0d32SChristoph Hellwig grp = kzalloc(sizeof(*grp), GFP_KERNEL); 154462ac0d32SChristoph Hellwig if (!grp) 154562ac0d32SChristoph Hellwig goto out; 154662ac0d32SChristoph Hellwig grp->port = port; 154762ac0d32SChristoph Hellwig grp->grpid = grpid; 154862ac0d32SChristoph Hellwig 154962ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 155062ac0d32SChristoph Hellwig nvmet_ana_group_enabled[grpid]++; 155162ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 155262ac0d32SChristoph Hellwig 155362ac0d32SChristoph Hellwig nvmet_port_send_ana_event(grp->port); 155462ac0d32SChristoph Hellwig 155562ac0d32SChristoph Hellwig config_group_init_type_name(&grp->group, name, &nvmet_ana_group_type); 155662ac0d32SChristoph Hellwig return &grp->group; 155762ac0d32SChristoph Hellwig out: 155862ac0d32SChristoph Hellwig return ERR_PTR(ret); 155962ac0d32SChristoph Hellwig } 156062ac0d32SChristoph Hellwig 156162ac0d32SChristoph Hellwig static struct configfs_group_operations nvmet_ana_groups_group_ops = { 156262ac0d32SChristoph Hellwig .make_group = nvmet_ana_groups_make_group, 156362ac0d32SChristoph Hellwig }; 156462ac0d32SChristoph Hellwig 156562ac0d32SChristoph Hellwig static const struct config_item_type nvmet_ana_groups_type = { 156662ac0d32SChristoph Hellwig .ct_group_ops = &nvmet_ana_groups_group_ops, 156762ac0d32SChristoph Hellwig .ct_owner = THIS_MODULE, 156862ac0d32SChristoph Hellwig }; 156962ac0d32SChristoph Hellwig 1570a07b4970SChristoph Hellwig /* 1571a07b4970SChristoph Hellwig * Ports definitions. 1572a07b4970SChristoph Hellwig */ 1573a07b4970SChristoph Hellwig static void nvmet_port_release(struct config_item *item) 1574a07b4970SChristoph Hellwig { 1575a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1576a07b4970SChristoph Hellwig 1577e3e19dccSIsrael Rukshin /* Let inflight controllers teardown complete */ 15788832cf92SSagi Grimberg flush_workqueue(nvmet_wq); 1579b662a078SJay Sternberg list_del(&port->global_entry); 1580b662a078SJay Sternberg 158172efd25dSChristoph Hellwig kfree(port->ana_state); 1582a07b4970SChristoph Hellwig kfree(port); 1583a07b4970SChristoph Hellwig } 1584a07b4970SChristoph Hellwig 1585a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_port_attrs[] = { 1586a07b4970SChristoph Hellwig &nvmet_attr_addr_adrfam, 1587a07b4970SChristoph Hellwig &nvmet_attr_addr_treq, 1588a07b4970SChristoph Hellwig &nvmet_attr_addr_traddr, 1589a07b4970SChristoph Hellwig &nvmet_attr_addr_trsvcid, 1590a07b4970SChristoph Hellwig &nvmet_attr_addr_trtype, 15910d5ee2b2SSteve Wise &nvmet_attr_param_inline_data_size, 1592ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 1593ea52ac1cSIsrael Rukshin &nvmet_attr_param_pi_enable, 1594ea52ac1cSIsrael Rukshin #endif 1595a07b4970SChristoph Hellwig NULL, 1596a07b4970SChristoph Hellwig }; 1597a07b4970SChristoph Hellwig 1598a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_port_item_ops = { 1599a07b4970SChristoph Hellwig .release = nvmet_port_release, 1600a07b4970SChristoph Hellwig }; 1601a07b4970SChristoph Hellwig 160266603a31SBhumika Goyal static const struct config_item_type nvmet_port_type = { 1603a07b4970SChristoph Hellwig .ct_attrs = nvmet_port_attrs, 1604a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_port_item_ops, 1605a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1606a07b4970SChristoph Hellwig }; 1607a07b4970SChristoph Hellwig 1608a07b4970SChristoph Hellwig static struct config_group *nvmet_ports_make(struct config_group *group, 1609a07b4970SChristoph Hellwig const char *name) 1610a07b4970SChristoph Hellwig { 1611a07b4970SChristoph Hellwig struct nvmet_port *port; 1612a07b4970SChristoph Hellwig u16 portid; 161362ac0d32SChristoph Hellwig u32 i; 1614a07b4970SChristoph Hellwig 1615a07b4970SChristoph Hellwig if (kstrtou16(name, 0, &portid)) 1616a07b4970SChristoph Hellwig return ERR_PTR(-EINVAL); 1617a07b4970SChristoph Hellwig 1618a07b4970SChristoph Hellwig port = kzalloc(sizeof(*port), GFP_KERNEL); 1619a07b4970SChristoph Hellwig if (!port) 1620f98d9ca1SDan Carpenter return ERR_PTR(-ENOMEM); 1621a07b4970SChristoph Hellwig 162272efd25dSChristoph Hellwig port->ana_state = kcalloc(NVMET_MAX_ANAGRPS + 1, 162372efd25dSChristoph Hellwig sizeof(*port->ana_state), GFP_KERNEL); 162472efd25dSChristoph Hellwig if (!port->ana_state) { 162572efd25dSChristoph Hellwig kfree(port); 162672efd25dSChristoph Hellwig return ERR_PTR(-ENOMEM); 162772efd25dSChristoph Hellwig } 162872efd25dSChristoph Hellwig 162962ac0d32SChristoph Hellwig for (i = 1; i <= NVMET_MAX_ANAGRPS; i++) { 163062ac0d32SChristoph Hellwig if (i == NVMET_DEFAULT_ANA_GRPID) 163162ac0d32SChristoph Hellwig port->ana_state[1] = NVME_ANA_OPTIMIZED; 163262ac0d32SChristoph Hellwig else 163362ac0d32SChristoph Hellwig port->ana_state[i] = NVME_ANA_INACCESSIBLE; 163462ac0d32SChristoph Hellwig } 163572efd25dSChristoph Hellwig 1636b662a078SJay Sternberg list_add(&port->global_entry, &nvmet_ports_list); 1637b662a078SJay Sternberg 1638a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->entry); 1639a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->subsystems); 1640a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->referrals); 16410d5ee2b2SSteve Wise port->inline_data_size = -1; /* < 0 == let the transport choose */ 1642a07b4970SChristoph Hellwig 1643a07b4970SChristoph Hellwig port->disc_addr.portid = cpu_to_le16(portid); 1644d02abd19SChaitanya Kulkarni port->disc_addr.adrfam = NVMF_ADDR_FAMILY_MAX; 16459b95d2fbSSagi Grimberg port->disc_addr.treq = NVMF_TREQ_DISABLE_SQFLOW; 1646a07b4970SChristoph Hellwig config_group_init_type_name(&port->group, name, &nvmet_port_type); 1647a07b4970SChristoph Hellwig 1648a07b4970SChristoph Hellwig config_group_init_type_name(&port->subsys_group, 1649a07b4970SChristoph Hellwig "subsystems", &nvmet_port_subsys_type); 1650a07b4970SChristoph Hellwig configfs_add_default_group(&port->subsys_group, &port->group); 1651a07b4970SChristoph Hellwig 1652a07b4970SChristoph Hellwig config_group_init_type_name(&port->referrals_group, 1653a07b4970SChristoph Hellwig "referrals", &nvmet_referrals_type); 1654a07b4970SChristoph Hellwig configfs_add_default_group(&port->referrals_group, &port->group); 1655a07b4970SChristoph Hellwig 165662ac0d32SChristoph Hellwig config_group_init_type_name(&port->ana_groups_group, 165762ac0d32SChristoph Hellwig "ana_groups", &nvmet_ana_groups_type); 165862ac0d32SChristoph Hellwig configfs_add_default_group(&port->ana_groups_group, &port->group); 165962ac0d32SChristoph Hellwig 166062ac0d32SChristoph Hellwig port->ana_default_group.port = port; 166162ac0d32SChristoph Hellwig port->ana_default_group.grpid = NVMET_DEFAULT_ANA_GRPID; 166262ac0d32SChristoph Hellwig config_group_init_type_name(&port->ana_default_group.group, 166362ac0d32SChristoph Hellwig __stringify(NVMET_DEFAULT_ANA_GRPID), 166462ac0d32SChristoph Hellwig &nvmet_ana_group_type); 166562ac0d32SChristoph Hellwig configfs_add_default_group(&port->ana_default_group.group, 166662ac0d32SChristoph Hellwig &port->ana_groups_group); 166762ac0d32SChristoph Hellwig 1668a07b4970SChristoph Hellwig return &port->group; 1669a07b4970SChristoph Hellwig } 1670a07b4970SChristoph Hellwig 1671a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_ports_group_ops = { 1672a07b4970SChristoph Hellwig .make_group = nvmet_ports_make, 1673a07b4970SChristoph Hellwig }; 1674a07b4970SChristoph Hellwig 167566603a31SBhumika Goyal static const struct config_item_type nvmet_ports_type = { 1676a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_ports_group_ops, 1677a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1678a07b4970SChristoph Hellwig }; 1679a07b4970SChristoph Hellwig 1680a07b4970SChristoph Hellwig static struct config_group nvmet_subsystems_group; 1681a07b4970SChristoph Hellwig static struct config_group nvmet_ports_group; 1682a07b4970SChristoph Hellwig 1683a07b4970SChristoph Hellwig static void nvmet_host_release(struct config_item *item) 1684a07b4970SChristoph Hellwig { 1685a07b4970SChristoph Hellwig struct nvmet_host *host = to_host(item); 1686a07b4970SChristoph Hellwig 1687a07b4970SChristoph Hellwig kfree(host); 1688a07b4970SChristoph Hellwig } 1689a07b4970SChristoph Hellwig 1690a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_host_item_ops = { 1691a07b4970SChristoph Hellwig .release = nvmet_host_release, 1692a07b4970SChristoph Hellwig }; 1693a07b4970SChristoph Hellwig 169466603a31SBhumika Goyal static const struct config_item_type nvmet_host_type = { 1695a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_host_item_ops, 1696a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1697a07b4970SChristoph Hellwig }; 1698a07b4970SChristoph Hellwig 1699a07b4970SChristoph Hellwig static struct config_group *nvmet_hosts_make_group(struct config_group *group, 1700a07b4970SChristoph Hellwig const char *name) 1701a07b4970SChristoph Hellwig { 1702a07b4970SChristoph Hellwig struct nvmet_host *host; 1703a07b4970SChristoph Hellwig 1704a07b4970SChristoph Hellwig host = kzalloc(sizeof(*host), GFP_KERNEL); 1705a07b4970SChristoph Hellwig if (!host) 1706a07b4970SChristoph Hellwig return ERR_PTR(-ENOMEM); 1707a07b4970SChristoph Hellwig 1708a07b4970SChristoph Hellwig config_group_init_type_name(&host->group, name, &nvmet_host_type); 1709a07b4970SChristoph Hellwig 1710a07b4970SChristoph Hellwig return &host->group; 1711a07b4970SChristoph Hellwig } 1712a07b4970SChristoph Hellwig 1713a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_hosts_group_ops = { 1714a07b4970SChristoph Hellwig .make_group = nvmet_hosts_make_group, 1715a07b4970SChristoph Hellwig }; 1716a07b4970SChristoph Hellwig 171766603a31SBhumika Goyal static const struct config_item_type nvmet_hosts_type = { 1718a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_hosts_group_ops, 1719a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1720a07b4970SChristoph Hellwig }; 1721a07b4970SChristoph Hellwig 1722a07b4970SChristoph Hellwig static struct config_group nvmet_hosts_group; 1723a07b4970SChristoph Hellwig 172466603a31SBhumika Goyal static const struct config_item_type nvmet_root_type = { 1725a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1726a07b4970SChristoph Hellwig }; 1727a07b4970SChristoph Hellwig 1728a07b4970SChristoph Hellwig static struct configfs_subsystem nvmet_configfs_subsystem = { 1729a07b4970SChristoph Hellwig .su_group = { 1730a07b4970SChristoph Hellwig .cg_item = { 1731a07b4970SChristoph Hellwig .ci_namebuf = "nvmet", 1732a07b4970SChristoph Hellwig .ci_type = &nvmet_root_type, 1733a07b4970SChristoph Hellwig }, 1734a07b4970SChristoph Hellwig }, 1735a07b4970SChristoph Hellwig }; 1736a07b4970SChristoph Hellwig 1737a07b4970SChristoph Hellwig int __init nvmet_init_configfs(void) 1738a07b4970SChristoph Hellwig { 1739a07b4970SChristoph Hellwig int ret; 1740a07b4970SChristoph Hellwig 1741a07b4970SChristoph Hellwig config_group_init(&nvmet_configfs_subsystem.su_group); 1742a07b4970SChristoph Hellwig mutex_init(&nvmet_configfs_subsystem.su_mutex); 1743a07b4970SChristoph Hellwig 1744a07b4970SChristoph Hellwig config_group_init_type_name(&nvmet_subsystems_group, 1745a07b4970SChristoph Hellwig "subsystems", &nvmet_subsystems_type); 1746a07b4970SChristoph Hellwig configfs_add_default_group(&nvmet_subsystems_group, 1747a07b4970SChristoph Hellwig &nvmet_configfs_subsystem.su_group); 1748a07b4970SChristoph Hellwig 1749a07b4970SChristoph Hellwig config_group_init_type_name(&nvmet_ports_group, 1750a07b4970SChristoph Hellwig "ports", &nvmet_ports_type); 1751a07b4970SChristoph Hellwig configfs_add_default_group(&nvmet_ports_group, 1752a07b4970SChristoph Hellwig &nvmet_configfs_subsystem.su_group); 1753a07b4970SChristoph Hellwig 1754a07b4970SChristoph Hellwig config_group_init_type_name(&nvmet_hosts_group, 1755a07b4970SChristoph Hellwig "hosts", &nvmet_hosts_type); 1756a07b4970SChristoph Hellwig configfs_add_default_group(&nvmet_hosts_group, 1757a07b4970SChristoph Hellwig &nvmet_configfs_subsystem.su_group); 1758a07b4970SChristoph Hellwig 1759a07b4970SChristoph Hellwig ret = configfs_register_subsystem(&nvmet_configfs_subsystem); 1760a07b4970SChristoph Hellwig if (ret) { 1761a07b4970SChristoph Hellwig pr_err("configfs_register_subsystem: %d\n", ret); 1762a07b4970SChristoph Hellwig return ret; 1763a07b4970SChristoph Hellwig } 1764a07b4970SChristoph Hellwig 1765a07b4970SChristoph Hellwig return 0; 1766a07b4970SChristoph Hellwig } 1767a07b4970SChristoph Hellwig 1768a07b4970SChristoph Hellwig void __exit nvmet_exit_configfs(void) 1769a07b4970SChristoph Hellwig { 1770a07b4970SChristoph Hellwig configfs_unregister_subsystem(&nvmet_configfs_subsystem); 1771a07b4970SChristoph Hellwig } 1772