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 799722c8aSChristophe JAILLET #include <linux/kstrtox.h> 8a07b4970SChristoph Hellwig #include <linux/kernel.h> 9a07b4970SChristoph Hellwig #include <linux/module.h> 10a07b4970SChristoph Hellwig #include <linux/slab.h> 11a07b4970SChristoph Hellwig #include <linux/stat.h> 12a07b4970SChristoph Hellwig #include <linux/ctype.h> 13c6925093SLogan Gunthorpe #include <linux/pci.h> 14c6925093SLogan Gunthorpe #include <linux/pci-p2pdma.h> 15db1312ddSHannes Reinecke #ifdef CONFIG_NVME_TARGET_AUTH 16db1312ddSHannes Reinecke #include <linux/nvme-auth.h> 17db1312ddSHannes Reinecke #endif 18db1312ddSHannes Reinecke #include <crypto/hash.h> 19db1312ddSHannes Reinecke #include <crypto/kpp.h> 20*946fd64bSNitesh Shetty #include <linux/nospec.h> 21a07b4970SChristoph Hellwig 22a07b4970SChristoph Hellwig #include "nvmet.h" 23a07b4970SChristoph Hellwig 2466603a31SBhumika Goyal static const struct config_item_type nvmet_host_type; 2566603a31SBhumika Goyal static const struct config_item_type nvmet_subsys_type; 26a07b4970SChristoph Hellwig 27b662a078SJay Sternberg static LIST_HEAD(nvmet_ports_list); 28b662a078SJay Sternberg struct list_head *nvmet_ports = &nvmet_ports_list; 29b662a078SJay Sternberg 3045e2f3c2SChaitanya Kulkarni struct nvmet_type_name_map { 31a5d18612SChristoph Hellwig u8 type; 32a5d18612SChristoph Hellwig const char *name; 3345e2f3c2SChaitanya Kulkarni }; 3445e2f3c2SChaitanya Kulkarni 3545e2f3c2SChaitanya Kulkarni static struct nvmet_type_name_map nvmet_transport[] = { 36a5d18612SChristoph Hellwig { NVMF_TRTYPE_RDMA, "rdma" }, 37a5d18612SChristoph Hellwig { NVMF_TRTYPE_FC, "fc" }, 38ad4f530eSSagi Grimberg { NVMF_TRTYPE_TCP, "tcp" }, 39a5d18612SChristoph Hellwig { NVMF_TRTYPE_LOOP, "loop" }, 40a5d18612SChristoph Hellwig }; 41a5d18612SChristoph Hellwig 427e764179SChaitanya Kulkarni static const struct nvmet_type_name_map nvmet_addr_family[] = { 437e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_PCI, "pcie" }, 447e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_IP4, "ipv4" }, 457e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_IP6, "ipv6" }, 467e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_IB, "ib" }, 477e764179SChaitanya Kulkarni { NVMF_ADDR_FAMILY_FC, "fc" }, 48d02abd19SChaitanya Kulkarni { NVMF_ADDR_FAMILY_LOOP, "loop" }, 497e764179SChaitanya Kulkarni }; 507e764179SChaitanya Kulkarni 513ecb5faaSChaitanya Kulkarni static bool nvmet_is_port_enabled(struct nvmet_port *p, const char *caller) 523ecb5faaSChaitanya Kulkarni { 533ecb5faaSChaitanya Kulkarni if (p->enabled) 543ecb5faaSChaitanya Kulkarni pr_err("Disable port '%u' before changing attribute in %s\n", 553ecb5faaSChaitanya Kulkarni le16_to_cpu(p->disc_addr.portid), caller); 563ecb5faaSChaitanya Kulkarni return p->enabled; 573ecb5faaSChaitanya Kulkarni } 583ecb5faaSChaitanya Kulkarni 59a07b4970SChristoph Hellwig /* 60a07b4970SChristoph Hellwig * nvmet_port Generic ConfigFS definitions. 61a07b4970SChristoph Hellwig * Used in any place in the ConfigFS tree that refers to an address. 62a07b4970SChristoph Hellwig */ 637e764179SChaitanya Kulkarni static ssize_t nvmet_addr_adrfam_show(struct config_item *item, char *page) 64a07b4970SChristoph Hellwig { 657e764179SChaitanya Kulkarni u8 adrfam = to_nvmet_port(item)->disc_addr.adrfam; 667e764179SChaitanya Kulkarni int i; 677e764179SChaitanya Kulkarni 687e764179SChaitanya Kulkarni for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) { 697e764179SChaitanya Kulkarni if (nvmet_addr_family[i].type == adrfam) 7098152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", 7198152eb7SChaitanya Kulkarni nvmet_addr_family[i].name); 72a07b4970SChristoph Hellwig } 737e764179SChaitanya Kulkarni 7498152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "\n"); 75a07b4970SChristoph Hellwig } 76a07b4970SChristoph Hellwig 77a07b4970SChristoph Hellwig static ssize_t nvmet_addr_adrfam_store(struct config_item *item, 78a07b4970SChristoph Hellwig const char *page, size_t count) 79a07b4970SChristoph Hellwig { 80a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 817e764179SChaitanya Kulkarni int i; 82a07b4970SChristoph Hellwig 833ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 84a07b4970SChristoph Hellwig return -EACCES; 85a07b4970SChristoph Hellwig 867e764179SChaitanya Kulkarni for (i = 1; i < ARRAY_SIZE(nvmet_addr_family); i++) { 877e764179SChaitanya Kulkarni if (sysfs_streq(page, nvmet_addr_family[i].name)) 887e764179SChaitanya Kulkarni goto found; 89a07b4970SChristoph Hellwig } 90a07b4970SChristoph Hellwig 917e764179SChaitanya Kulkarni pr_err("Invalid value '%s' for adrfam\n", page); 927e764179SChaitanya Kulkarni return -EINVAL; 937e764179SChaitanya Kulkarni 947e764179SChaitanya Kulkarni found: 95d02abd19SChaitanya Kulkarni port->disc_addr.adrfam = nvmet_addr_family[i].type; 96a07b4970SChristoph Hellwig return count; 97a07b4970SChristoph Hellwig } 98a07b4970SChristoph Hellwig 99a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_adrfam); 100a07b4970SChristoph Hellwig 101a07b4970SChristoph Hellwig static ssize_t nvmet_addr_portid_show(struct config_item *item, 102a07b4970SChristoph Hellwig char *page) 103a07b4970SChristoph Hellwig { 10473d77c53SChaitanya Kulkarni __le16 portid = to_nvmet_port(item)->disc_addr.portid; 105a07b4970SChristoph Hellwig 10673d77c53SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%d\n", le16_to_cpu(portid)); 107a07b4970SChristoph Hellwig } 108a07b4970SChristoph Hellwig 109a07b4970SChristoph Hellwig static ssize_t nvmet_addr_portid_store(struct config_item *item, 110a07b4970SChristoph Hellwig const char *page, size_t count) 111a07b4970SChristoph Hellwig { 112a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 113a07b4970SChristoph Hellwig u16 portid = 0; 114a07b4970SChristoph Hellwig 115a07b4970SChristoph Hellwig if (kstrtou16(page, 0, &portid)) { 116a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for portid\n", page); 117a07b4970SChristoph Hellwig return -EINVAL; 118a07b4970SChristoph Hellwig } 119a07b4970SChristoph Hellwig 1203ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 121a07b4970SChristoph Hellwig return -EACCES; 1223ecb5faaSChaitanya Kulkarni 123a07b4970SChristoph Hellwig port->disc_addr.portid = cpu_to_le16(portid); 124a07b4970SChristoph Hellwig return count; 125a07b4970SChristoph Hellwig } 126a07b4970SChristoph Hellwig 127a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_portid); 128a07b4970SChristoph Hellwig 129a07b4970SChristoph Hellwig static ssize_t nvmet_addr_traddr_show(struct config_item *item, 130a07b4970SChristoph Hellwig char *page) 131a07b4970SChristoph Hellwig { 132a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 133a07b4970SChristoph Hellwig 13473d77c53SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", port->disc_addr.traddr); 135a07b4970SChristoph Hellwig } 136a07b4970SChristoph Hellwig 137a07b4970SChristoph Hellwig static ssize_t nvmet_addr_traddr_store(struct config_item *item, 138a07b4970SChristoph Hellwig const char *page, size_t count) 139a07b4970SChristoph Hellwig { 140a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 141a07b4970SChristoph Hellwig 142a07b4970SChristoph Hellwig if (count > NVMF_TRADDR_SIZE) { 143a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for traddr\n", page); 144a07b4970SChristoph Hellwig return -EINVAL; 145a07b4970SChristoph Hellwig } 146a07b4970SChristoph Hellwig 1473ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 148a07b4970SChristoph Hellwig return -EACCES; 1499ba2a5cbSSagi Grimberg 1509ba2a5cbSSagi Grimberg if (sscanf(page, "%s\n", port->disc_addr.traddr) != 1) 1519ba2a5cbSSagi Grimberg return -EINVAL; 1529ba2a5cbSSagi Grimberg return count; 153a07b4970SChristoph Hellwig } 154a07b4970SChristoph Hellwig 155a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_traddr); 156a07b4970SChristoph Hellwig 15787628e28SChaitanya Kulkarni static const struct nvmet_type_name_map nvmet_addr_treq[] = { 15887628e28SChaitanya Kulkarni { NVMF_TREQ_NOT_SPECIFIED, "not specified" }, 15987628e28SChaitanya Kulkarni { NVMF_TREQ_REQUIRED, "required" }, 16087628e28SChaitanya Kulkarni { NVMF_TREQ_NOT_REQUIRED, "not required" }, 16187628e28SChaitanya Kulkarni }; 16287628e28SChaitanya Kulkarni 16387628e28SChaitanya Kulkarni static ssize_t nvmet_addr_treq_show(struct config_item *item, char *page) 164a07b4970SChristoph Hellwig { 16587628e28SChaitanya Kulkarni u8 treq = to_nvmet_port(item)->disc_addr.treq & 16687628e28SChaitanya Kulkarni NVME_TREQ_SECURE_CHANNEL_MASK; 16787628e28SChaitanya Kulkarni int i; 16887628e28SChaitanya Kulkarni 16987628e28SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) { 17087628e28SChaitanya Kulkarni if (treq == nvmet_addr_treq[i].type) 17198152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", 17298152eb7SChaitanya Kulkarni nvmet_addr_treq[i].name); 173a07b4970SChristoph Hellwig } 17487628e28SChaitanya Kulkarni 17598152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "\n"); 176a07b4970SChristoph Hellwig } 177a07b4970SChristoph Hellwig 178a07b4970SChristoph Hellwig static ssize_t nvmet_addr_treq_store(struct config_item *item, 179a07b4970SChristoph Hellwig const char *page, size_t count) 180a07b4970SChristoph Hellwig { 181a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1820445e1b5SSagi Grimberg u8 treq = port->disc_addr.treq & ~NVME_TREQ_SECURE_CHANNEL_MASK; 18387628e28SChaitanya Kulkarni int i; 184a07b4970SChristoph Hellwig 1853ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 186a07b4970SChristoph Hellwig return -EACCES; 187a07b4970SChristoph Hellwig 18887628e28SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_addr_treq); i++) { 18987628e28SChaitanya Kulkarni if (sysfs_streq(page, nvmet_addr_treq[i].name)) 19087628e28SChaitanya Kulkarni goto found; 19187628e28SChaitanya Kulkarni } 19287628e28SChaitanya Kulkarni 193a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for treq\n", page); 194a07b4970SChristoph Hellwig return -EINVAL; 195a07b4970SChristoph Hellwig 19687628e28SChaitanya Kulkarni found: 19787628e28SChaitanya Kulkarni treq |= nvmet_addr_treq[i].type; 19887628e28SChaitanya Kulkarni port->disc_addr.treq = treq; 199a07b4970SChristoph Hellwig return count; 200a07b4970SChristoph Hellwig } 201a07b4970SChristoph Hellwig 202a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_treq); 203a07b4970SChristoph Hellwig 204a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trsvcid_show(struct config_item *item, 205a07b4970SChristoph Hellwig char *page) 206a07b4970SChristoph Hellwig { 207a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 208a07b4970SChristoph Hellwig 20973d77c53SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%s\n", port->disc_addr.trsvcid); 210a07b4970SChristoph Hellwig } 211a07b4970SChristoph Hellwig 212a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trsvcid_store(struct config_item *item, 213a07b4970SChristoph Hellwig const char *page, size_t count) 214a07b4970SChristoph Hellwig { 215a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 216a07b4970SChristoph Hellwig 217a07b4970SChristoph Hellwig if (count > NVMF_TRSVCID_SIZE) { 218a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for trsvcid\n", page); 219a07b4970SChristoph Hellwig return -EINVAL; 220a07b4970SChristoph Hellwig } 2213ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 222a07b4970SChristoph Hellwig return -EACCES; 2239ba2a5cbSSagi Grimberg 2249ba2a5cbSSagi Grimberg if (sscanf(page, "%s\n", port->disc_addr.trsvcid) != 1) 2259ba2a5cbSSagi Grimberg return -EINVAL; 2269ba2a5cbSSagi Grimberg return count; 227a07b4970SChristoph Hellwig } 228a07b4970SChristoph Hellwig 229a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_trsvcid); 230a07b4970SChristoph Hellwig 2310d5ee2b2SSteve Wise static ssize_t nvmet_param_inline_data_size_show(struct config_item *item, 2320d5ee2b2SSteve Wise char *page) 2330d5ee2b2SSteve Wise { 2340d5ee2b2SSteve Wise struct nvmet_port *port = to_nvmet_port(item); 2350d5ee2b2SSteve Wise 2360d5ee2b2SSteve Wise return snprintf(page, PAGE_SIZE, "%d\n", port->inline_data_size); 2370d5ee2b2SSteve Wise } 2380d5ee2b2SSteve Wise 2390d5ee2b2SSteve Wise static ssize_t nvmet_param_inline_data_size_store(struct config_item *item, 2400d5ee2b2SSteve Wise const char *page, size_t count) 2410d5ee2b2SSteve Wise { 2420d5ee2b2SSteve Wise struct nvmet_port *port = to_nvmet_port(item); 2430d5ee2b2SSteve Wise int ret; 2440d5ee2b2SSteve Wise 2453ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 2460d5ee2b2SSteve Wise return -EACCES; 2470d5ee2b2SSteve Wise ret = kstrtoint(page, 0, &port->inline_data_size); 2480d5ee2b2SSteve Wise if (ret) { 2490d5ee2b2SSteve Wise pr_err("Invalid value '%s' for inline_data_size\n", page); 2500d5ee2b2SSteve Wise return -EINVAL; 2510d5ee2b2SSteve Wise } 2520d5ee2b2SSteve Wise return count; 2530d5ee2b2SSteve Wise } 2540d5ee2b2SSteve Wise 2550d5ee2b2SSteve Wise CONFIGFS_ATTR(nvmet_, param_inline_data_size); 2560d5ee2b2SSteve Wise 257ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 258ea52ac1cSIsrael Rukshin static ssize_t nvmet_param_pi_enable_show(struct config_item *item, 259ea52ac1cSIsrael Rukshin char *page) 260ea52ac1cSIsrael Rukshin { 261ea52ac1cSIsrael Rukshin struct nvmet_port *port = to_nvmet_port(item); 262ea52ac1cSIsrael Rukshin 263ea52ac1cSIsrael Rukshin return snprintf(page, PAGE_SIZE, "%d\n", port->pi_enable); 264ea52ac1cSIsrael Rukshin } 265ea52ac1cSIsrael Rukshin 266ea52ac1cSIsrael Rukshin static ssize_t nvmet_param_pi_enable_store(struct config_item *item, 267ea52ac1cSIsrael Rukshin const char *page, size_t count) 268ea52ac1cSIsrael Rukshin { 269ea52ac1cSIsrael Rukshin struct nvmet_port *port = to_nvmet_port(item); 270ea52ac1cSIsrael Rukshin bool val; 271ea52ac1cSIsrael Rukshin 27299722c8aSChristophe JAILLET if (kstrtobool(page, &val)) 273ea52ac1cSIsrael Rukshin return -EINVAL; 274ea52ac1cSIsrael Rukshin 275cc345622SIsrael Rukshin if (nvmet_is_port_enabled(port, __func__)) 276ea52ac1cSIsrael Rukshin return -EACCES; 277ea52ac1cSIsrael Rukshin 278ea52ac1cSIsrael Rukshin port->pi_enable = val; 279ea52ac1cSIsrael Rukshin return count; 280ea52ac1cSIsrael Rukshin } 281ea52ac1cSIsrael Rukshin 282ea52ac1cSIsrael Rukshin CONFIGFS_ATTR(nvmet_, param_pi_enable); 283ea52ac1cSIsrael Rukshin #endif 284ea52ac1cSIsrael Rukshin 285a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trtype_show(struct config_item *item, 286a07b4970SChristoph Hellwig char *page) 287a07b4970SChristoph Hellwig { 288a5d18612SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 289a5d18612SChristoph Hellwig int i; 290a5d18612SChristoph Hellwig 29145e2f3c2SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) { 29245e2f3c2SChaitanya Kulkarni if (port->disc_addr.trtype == nvmet_transport[i].type) 29398152eb7SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, 29498152eb7SChaitanya Kulkarni "%s\n", nvmet_transport[i].name); 295a07b4970SChristoph Hellwig } 296a5d18612SChristoph Hellwig 297a5d18612SChristoph Hellwig return sprintf(page, "\n"); 298a07b4970SChristoph Hellwig } 299a07b4970SChristoph Hellwig 300a07b4970SChristoph Hellwig static void nvmet_port_init_tsas_rdma(struct nvmet_port *port) 301a07b4970SChristoph Hellwig { 302a07b4970SChristoph Hellwig port->disc_addr.tsas.rdma.qptype = NVMF_RDMA_QPTYPE_CONNECTED; 303a07b4970SChristoph Hellwig port->disc_addr.tsas.rdma.prtype = NVMF_RDMA_PRTYPE_NOT_SPECIFIED; 304a07b4970SChristoph Hellwig port->disc_addr.tsas.rdma.cms = NVMF_RDMA_CMS_RDMA_CM; 305a07b4970SChristoph Hellwig } 306a07b4970SChristoph Hellwig 307a07b4970SChristoph Hellwig static ssize_t nvmet_addr_trtype_store(struct config_item *item, 308a07b4970SChristoph Hellwig const char *page, size_t count) 309a07b4970SChristoph Hellwig { 310a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 311a5d18612SChristoph Hellwig int i; 312a07b4970SChristoph Hellwig 3133ecb5faaSChaitanya Kulkarni if (nvmet_is_port_enabled(port, __func__)) 314a07b4970SChristoph Hellwig return -EACCES; 315a07b4970SChristoph Hellwig 31645e2f3c2SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_transport); i++) { 31745e2f3c2SChaitanya Kulkarni if (sysfs_streq(page, nvmet_transport[i].name)) 318a5d18612SChristoph Hellwig goto found; 319a07b4970SChristoph Hellwig } 320a07b4970SChristoph Hellwig 321a5d18612SChristoph Hellwig pr_err("Invalid value '%s' for trtype\n", page); 322a5d18612SChristoph Hellwig return -EINVAL; 3237e764179SChaitanya Kulkarni 324a5d18612SChristoph Hellwig found: 325a5d18612SChristoph Hellwig memset(&port->disc_addr.tsas, 0, NVMF_TSAS_SIZE); 32645e2f3c2SChaitanya Kulkarni port->disc_addr.trtype = nvmet_transport[i].type; 327a5d18612SChristoph Hellwig if (port->disc_addr.trtype == NVMF_TRTYPE_RDMA) 328a5d18612SChristoph Hellwig nvmet_port_init_tsas_rdma(port); 329a07b4970SChristoph Hellwig return count; 330a07b4970SChristoph Hellwig } 331a07b4970SChristoph Hellwig 332a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_, addr_trtype); 333a07b4970SChristoph Hellwig 334a07b4970SChristoph Hellwig /* 335a07b4970SChristoph Hellwig * Namespace structures & file operation functions below 336a07b4970SChristoph Hellwig */ 337a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_path_show(struct config_item *item, char *page) 338a07b4970SChristoph Hellwig { 339a07b4970SChristoph Hellwig return sprintf(page, "%s\n", to_nvmet_ns(item)->device_path); 340a07b4970SChristoph Hellwig } 341a07b4970SChristoph Hellwig 342a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_path_store(struct config_item *item, 343a07b4970SChristoph Hellwig const char *page, size_t count) 344a07b4970SChristoph Hellwig { 345a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 346a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = ns->subsys; 3475613d312SHannes Reinecke size_t len; 348a07b4970SChristoph Hellwig int ret; 349a07b4970SChristoph Hellwig 350a07b4970SChristoph Hellwig mutex_lock(&subsys->lock); 351a07b4970SChristoph Hellwig ret = -EBUSY; 352e4fcf07cSSolganik Alexander if (ns->enabled) 353a07b4970SChristoph Hellwig goto out_unlock; 354a07b4970SChristoph Hellwig 3555613d312SHannes Reinecke ret = -EINVAL; 3565613d312SHannes Reinecke len = strcspn(page, "\n"); 3575613d312SHannes Reinecke if (!len) 3585613d312SHannes Reinecke goto out_unlock; 359a07b4970SChristoph Hellwig 3605613d312SHannes Reinecke kfree(ns->device_path); 361a07b4970SChristoph Hellwig ret = -ENOMEM; 36209bb8986SChen Zhou ns->device_path = kmemdup_nul(page, len, GFP_KERNEL); 363a07b4970SChristoph Hellwig if (!ns->device_path) 364a07b4970SChristoph Hellwig goto out_unlock; 365a07b4970SChristoph Hellwig 366a07b4970SChristoph Hellwig mutex_unlock(&subsys->lock); 367a07b4970SChristoph Hellwig return count; 368a07b4970SChristoph Hellwig 369a07b4970SChristoph Hellwig out_unlock: 370a07b4970SChristoph Hellwig mutex_unlock(&subsys->lock); 371a07b4970SChristoph Hellwig return ret; 372a07b4970SChristoph Hellwig } 373a07b4970SChristoph Hellwig 374a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, device_path); 375a07b4970SChristoph Hellwig 376c6925093SLogan Gunthorpe #ifdef CONFIG_PCI_P2PDMA 377c6925093SLogan Gunthorpe static ssize_t nvmet_ns_p2pmem_show(struct config_item *item, char *page) 378c6925093SLogan Gunthorpe { 379c6925093SLogan Gunthorpe struct nvmet_ns *ns = to_nvmet_ns(item); 380c6925093SLogan Gunthorpe 381c6925093SLogan Gunthorpe return pci_p2pdma_enable_show(page, ns->p2p_dev, ns->use_p2pmem); 382c6925093SLogan Gunthorpe } 383c6925093SLogan Gunthorpe 384c6925093SLogan Gunthorpe static ssize_t nvmet_ns_p2pmem_store(struct config_item *item, 385c6925093SLogan Gunthorpe const char *page, size_t count) 386c6925093SLogan Gunthorpe { 387c6925093SLogan Gunthorpe struct nvmet_ns *ns = to_nvmet_ns(item); 388c6925093SLogan Gunthorpe struct pci_dev *p2p_dev = NULL; 389c6925093SLogan Gunthorpe bool use_p2pmem; 390c6925093SLogan Gunthorpe int ret = count; 391c6925093SLogan Gunthorpe int error; 392c6925093SLogan Gunthorpe 393c6925093SLogan Gunthorpe mutex_lock(&ns->subsys->lock); 394c6925093SLogan Gunthorpe if (ns->enabled) { 395c6925093SLogan Gunthorpe ret = -EBUSY; 396c6925093SLogan Gunthorpe goto out_unlock; 397c6925093SLogan Gunthorpe } 398c6925093SLogan Gunthorpe 399c6925093SLogan Gunthorpe error = pci_p2pdma_enable_store(page, &p2p_dev, &use_p2pmem); 400c6925093SLogan Gunthorpe if (error) { 401c6925093SLogan Gunthorpe ret = error; 402c6925093SLogan Gunthorpe goto out_unlock; 403c6925093SLogan Gunthorpe } 404c6925093SLogan Gunthorpe 405c6925093SLogan Gunthorpe ns->use_p2pmem = use_p2pmem; 406c6925093SLogan Gunthorpe pci_dev_put(ns->p2p_dev); 407c6925093SLogan Gunthorpe ns->p2p_dev = p2p_dev; 408c6925093SLogan Gunthorpe 409c6925093SLogan Gunthorpe out_unlock: 410c6925093SLogan Gunthorpe mutex_unlock(&ns->subsys->lock); 411c6925093SLogan Gunthorpe 412c6925093SLogan Gunthorpe return ret; 413c6925093SLogan Gunthorpe } 414c6925093SLogan Gunthorpe 415c6925093SLogan Gunthorpe CONFIGFS_ATTR(nvmet_ns_, p2pmem); 416c6925093SLogan Gunthorpe #endif /* CONFIG_PCI_P2PDMA */ 417c6925093SLogan Gunthorpe 418430c7befSJohannes Thumshirn static ssize_t nvmet_ns_device_uuid_show(struct config_item *item, char *page) 419430c7befSJohannes Thumshirn { 420430c7befSJohannes Thumshirn return sprintf(page, "%pUb\n", &to_nvmet_ns(item)->uuid); 421430c7befSJohannes Thumshirn } 422430c7befSJohannes Thumshirn 423430c7befSJohannes Thumshirn static ssize_t nvmet_ns_device_uuid_store(struct config_item *item, 424430c7befSJohannes Thumshirn const char *page, size_t count) 425430c7befSJohannes Thumshirn { 426430c7befSJohannes Thumshirn struct nvmet_ns *ns = to_nvmet_ns(item); 427430c7befSJohannes Thumshirn struct nvmet_subsys *subsys = ns->subsys; 428430c7befSJohannes Thumshirn int ret = 0; 429430c7befSJohannes Thumshirn 430430c7befSJohannes Thumshirn mutex_lock(&subsys->lock); 431430c7befSJohannes Thumshirn if (ns->enabled) { 432430c7befSJohannes Thumshirn ret = -EBUSY; 433430c7befSJohannes Thumshirn goto out_unlock; 434430c7befSJohannes Thumshirn } 435430c7befSJohannes Thumshirn 436430c7befSJohannes Thumshirn if (uuid_parse(page, &ns->uuid)) 437430c7befSJohannes Thumshirn ret = -EINVAL; 438430c7befSJohannes Thumshirn 439430c7befSJohannes Thumshirn out_unlock: 440430c7befSJohannes Thumshirn mutex_unlock(&subsys->lock); 441430c7befSJohannes Thumshirn return ret ? ret : count; 442430c7befSJohannes Thumshirn } 443430c7befSJohannes Thumshirn 444f871749aSMax Gurtovoy CONFIGFS_ATTR(nvmet_ns_, device_uuid); 445f871749aSMax Gurtovoy 446a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_nguid_show(struct config_item *item, char *page) 447a07b4970SChristoph Hellwig { 448a07b4970SChristoph Hellwig return sprintf(page, "%pUb\n", &to_nvmet_ns(item)->nguid); 449a07b4970SChristoph Hellwig } 450a07b4970SChristoph Hellwig 451a07b4970SChristoph Hellwig static ssize_t nvmet_ns_device_nguid_store(struct config_item *item, 452a07b4970SChristoph Hellwig const char *page, size_t count) 453a07b4970SChristoph Hellwig { 454a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 455a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = ns->subsys; 456a07b4970SChristoph Hellwig u8 nguid[16]; 457a07b4970SChristoph Hellwig const char *p = page; 458a07b4970SChristoph Hellwig int i; 459a07b4970SChristoph Hellwig int ret = 0; 460a07b4970SChristoph Hellwig 461a07b4970SChristoph Hellwig mutex_lock(&subsys->lock); 462e4fcf07cSSolganik Alexander if (ns->enabled) { 463a07b4970SChristoph Hellwig ret = -EBUSY; 464a07b4970SChristoph Hellwig goto out_unlock; 465a07b4970SChristoph Hellwig } 466a07b4970SChristoph Hellwig 467a07b4970SChristoph Hellwig for (i = 0; i < 16; i++) { 468a07b4970SChristoph Hellwig if (p + 2 > page + count) { 469a07b4970SChristoph Hellwig ret = -EINVAL; 470a07b4970SChristoph Hellwig goto out_unlock; 471a07b4970SChristoph Hellwig } 472a07b4970SChristoph Hellwig if (!isxdigit(p[0]) || !isxdigit(p[1])) { 473a07b4970SChristoph Hellwig ret = -EINVAL; 474a07b4970SChristoph Hellwig goto out_unlock; 475a07b4970SChristoph Hellwig } 476a07b4970SChristoph Hellwig 477a07b4970SChristoph Hellwig nguid[i] = (hex_to_bin(p[0]) << 4) | hex_to_bin(p[1]); 478a07b4970SChristoph Hellwig p += 2; 479a07b4970SChristoph Hellwig 480a07b4970SChristoph Hellwig if (*p == '-' || *p == ':') 481a07b4970SChristoph Hellwig p++; 482a07b4970SChristoph Hellwig } 483a07b4970SChristoph Hellwig 484a07b4970SChristoph Hellwig memcpy(&ns->nguid, nguid, sizeof(nguid)); 485a07b4970SChristoph Hellwig out_unlock: 486a07b4970SChristoph Hellwig mutex_unlock(&subsys->lock); 487a07b4970SChristoph Hellwig return ret ? ret : count; 488a07b4970SChristoph Hellwig } 489a07b4970SChristoph Hellwig 490a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, device_nguid); 491a07b4970SChristoph Hellwig 49262ac0d32SChristoph Hellwig static ssize_t nvmet_ns_ana_grpid_show(struct config_item *item, char *page) 49362ac0d32SChristoph Hellwig { 49462ac0d32SChristoph Hellwig return sprintf(page, "%u\n", to_nvmet_ns(item)->anagrpid); 49562ac0d32SChristoph Hellwig } 49662ac0d32SChristoph Hellwig 49762ac0d32SChristoph Hellwig static ssize_t nvmet_ns_ana_grpid_store(struct config_item *item, 49862ac0d32SChristoph Hellwig const char *page, size_t count) 49962ac0d32SChristoph Hellwig { 50062ac0d32SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 50162ac0d32SChristoph Hellwig u32 oldgrpid, newgrpid; 50262ac0d32SChristoph Hellwig int ret; 50362ac0d32SChristoph Hellwig 50462ac0d32SChristoph Hellwig ret = kstrtou32(page, 0, &newgrpid); 50562ac0d32SChristoph Hellwig if (ret) 50662ac0d32SChristoph Hellwig return ret; 50762ac0d32SChristoph Hellwig 50862ac0d32SChristoph Hellwig if (newgrpid < 1 || newgrpid > NVMET_MAX_ANAGRPS) 50962ac0d32SChristoph Hellwig return -EINVAL; 51062ac0d32SChristoph Hellwig 51162ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 51262ac0d32SChristoph Hellwig oldgrpid = ns->anagrpid; 513*946fd64bSNitesh Shetty newgrpid = array_index_nospec(newgrpid, NVMET_MAX_ANAGRPS); 51462ac0d32SChristoph Hellwig nvmet_ana_group_enabled[newgrpid]++; 51562ac0d32SChristoph Hellwig ns->anagrpid = newgrpid; 51662ac0d32SChristoph Hellwig nvmet_ana_group_enabled[oldgrpid]--; 51762ac0d32SChristoph Hellwig nvmet_ana_chgcnt++; 51862ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 51962ac0d32SChristoph Hellwig 52062ac0d32SChristoph Hellwig nvmet_send_ana_event(ns->subsys, NULL); 52162ac0d32SChristoph Hellwig return count; 52262ac0d32SChristoph Hellwig } 52362ac0d32SChristoph Hellwig 52462ac0d32SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, ana_grpid); 52562ac0d32SChristoph Hellwig 526a07b4970SChristoph Hellwig static ssize_t nvmet_ns_enable_show(struct config_item *item, char *page) 527a07b4970SChristoph Hellwig { 528e4fcf07cSSolganik Alexander return sprintf(page, "%d\n", to_nvmet_ns(item)->enabled); 529a07b4970SChristoph Hellwig } 530a07b4970SChristoph Hellwig 531a07b4970SChristoph Hellwig static ssize_t nvmet_ns_enable_store(struct config_item *item, 532a07b4970SChristoph Hellwig const char *page, size_t count) 533a07b4970SChristoph Hellwig { 534a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 535a07b4970SChristoph Hellwig bool enable; 536a07b4970SChristoph Hellwig int ret = 0; 537a07b4970SChristoph Hellwig 53899722c8aSChristophe JAILLET if (kstrtobool(page, &enable)) 539a07b4970SChristoph Hellwig return -EINVAL; 540a07b4970SChristoph Hellwig 541a07b4970SChristoph Hellwig if (enable) 542a07b4970SChristoph Hellwig ret = nvmet_ns_enable(ns); 543a07b4970SChristoph Hellwig else 544a07b4970SChristoph Hellwig nvmet_ns_disable(ns); 545a07b4970SChristoph Hellwig 546a07b4970SChristoph Hellwig return ret ? ret : count; 547a07b4970SChristoph Hellwig } 548a07b4970SChristoph Hellwig 549a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_ns_, enable); 550a07b4970SChristoph Hellwig 55155eb942eSChaitanya Kulkarni static ssize_t nvmet_ns_buffered_io_show(struct config_item *item, char *page) 55255eb942eSChaitanya Kulkarni { 55355eb942eSChaitanya Kulkarni return sprintf(page, "%d\n", to_nvmet_ns(item)->buffered_io); 55455eb942eSChaitanya Kulkarni } 55555eb942eSChaitanya Kulkarni 55655eb942eSChaitanya Kulkarni static ssize_t nvmet_ns_buffered_io_store(struct config_item *item, 55755eb942eSChaitanya Kulkarni const char *page, size_t count) 55855eb942eSChaitanya Kulkarni { 55955eb942eSChaitanya Kulkarni struct nvmet_ns *ns = to_nvmet_ns(item); 56055eb942eSChaitanya Kulkarni bool val; 56155eb942eSChaitanya Kulkarni 56299722c8aSChristophe JAILLET if (kstrtobool(page, &val)) 56355eb942eSChaitanya Kulkarni return -EINVAL; 56455eb942eSChaitanya Kulkarni 56555eb942eSChaitanya Kulkarni mutex_lock(&ns->subsys->lock); 56655eb942eSChaitanya Kulkarni if (ns->enabled) { 56755eb942eSChaitanya Kulkarni pr_err("disable ns before setting buffered_io value.\n"); 56855eb942eSChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 56955eb942eSChaitanya Kulkarni return -EINVAL; 57055eb942eSChaitanya Kulkarni } 57155eb942eSChaitanya Kulkarni 57255eb942eSChaitanya Kulkarni ns->buffered_io = val; 57355eb942eSChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 57455eb942eSChaitanya Kulkarni return count; 57555eb942eSChaitanya Kulkarni } 57655eb942eSChaitanya Kulkarni 57755eb942eSChaitanya Kulkarni CONFIGFS_ATTR(nvmet_ns_, buffered_io); 57855eb942eSChaitanya Kulkarni 5791f357548SChaitanya Kulkarni static ssize_t nvmet_ns_revalidate_size_store(struct config_item *item, 5801f357548SChaitanya Kulkarni const char *page, size_t count) 5811f357548SChaitanya Kulkarni { 5821f357548SChaitanya Kulkarni struct nvmet_ns *ns = to_nvmet_ns(item); 5831f357548SChaitanya Kulkarni bool val; 5841f357548SChaitanya Kulkarni 58599722c8aSChristophe JAILLET if (kstrtobool(page, &val)) 5861f357548SChaitanya Kulkarni return -EINVAL; 5871f357548SChaitanya Kulkarni 5881f357548SChaitanya Kulkarni if (!val) 5891f357548SChaitanya Kulkarni return -EINVAL; 5901f357548SChaitanya Kulkarni 5911f357548SChaitanya Kulkarni mutex_lock(&ns->subsys->lock); 5921f357548SChaitanya Kulkarni if (!ns->enabled) { 5931f357548SChaitanya Kulkarni pr_err("enable ns before revalidate.\n"); 5941f357548SChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 5951f357548SChaitanya Kulkarni return -EINVAL; 5961f357548SChaitanya Kulkarni } 597da783733SChristoph Hellwig if (nvmet_ns_revalidate(ns)) 598da783733SChristoph Hellwig nvmet_ns_changed(ns->subsys, ns->nsid); 5991f357548SChaitanya Kulkarni mutex_unlock(&ns->subsys->lock); 6001f357548SChaitanya Kulkarni return count; 6011f357548SChaitanya Kulkarni } 6021f357548SChaitanya Kulkarni 6031f357548SChaitanya Kulkarni CONFIGFS_ATTR_WO(nvmet_ns_, revalidate_size); 6041f357548SChaitanya Kulkarni 605a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_ns_attrs[] = { 606a07b4970SChristoph Hellwig &nvmet_ns_attr_device_path, 607a07b4970SChristoph Hellwig &nvmet_ns_attr_device_nguid, 608430c7befSJohannes Thumshirn &nvmet_ns_attr_device_uuid, 60962ac0d32SChristoph Hellwig &nvmet_ns_attr_ana_grpid, 610a07b4970SChristoph Hellwig &nvmet_ns_attr_enable, 61155eb942eSChaitanya Kulkarni &nvmet_ns_attr_buffered_io, 6121f357548SChaitanya Kulkarni &nvmet_ns_attr_revalidate_size, 613c6925093SLogan Gunthorpe #ifdef CONFIG_PCI_P2PDMA 614c6925093SLogan Gunthorpe &nvmet_ns_attr_p2pmem, 615c6925093SLogan Gunthorpe #endif 616a07b4970SChristoph Hellwig NULL, 617a07b4970SChristoph Hellwig }; 618a07b4970SChristoph Hellwig 619a07b4970SChristoph Hellwig static void nvmet_ns_release(struct config_item *item) 620a07b4970SChristoph Hellwig { 621a07b4970SChristoph Hellwig struct nvmet_ns *ns = to_nvmet_ns(item); 622a07b4970SChristoph Hellwig 623a07b4970SChristoph Hellwig nvmet_ns_free(ns); 624a07b4970SChristoph Hellwig } 625a07b4970SChristoph Hellwig 626a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_ns_item_ops = { 627a07b4970SChristoph Hellwig .release = nvmet_ns_release, 628a07b4970SChristoph Hellwig }; 629a07b4970SChristoph Hellwig 63066603a31SBhumika Goyal static const struct config_item_type nvmet_ns_type = { 631a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_ns_item_ops, 632a07b4970SChristoph Hellwig .ct_attrs = nvmet_ns_attrs, 633a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 634a07b4970SChristoph Hellwig }; 635a07b4970SChristoph Hellwig 636a07b4970SChristoph Hellwig static struct config_group *nvmet_ns_make(struct config_group *group, 637a07b4970SChristoph Hellwig const char *name) 638a07b4970SChristoph Hellwig { 639a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = namespaces_to_subsys(&group->cg_item); 640a07b4970SChristoph Hellwig struct nvmet_ns *ns; 641a07b4970SChristoph Hellwig int ret; 642a07b4970SChristoph Hellwig u32 nsid; 643a07b4970SChristoph Hellwig 644a07b4970SChristoph Hellwig ret = kstrtou32(name, 0, &nsid); 645a07b4970SChristoph Hellwig if (ret) 646a07b4970SChristoph Hellwig goto out; 647a07b4970SChristoph Hellwig 648a07b4970SChristoph Hellwig ret = -EINVAL; 6495ba89503SMikhail Skorzhinskii if (nsid == 0 || nsid == NVME_NSID_ALL) { 6505ba89503SMikhail Skorzhinskii pr_err("invalid nsid %#x", nsid); 651a07b4970SChristoph Hellwig goto out; 6525ba89503SMikhail Skorzhinskii } 653a07b4970SChristoph Hellwig 654a07b4970SChristoph Hellwig ret = -ENOMEM; 655a07b4970SChristoph Hellwig ns = nvmet_ns_alloc(subsys, nsid); 656a07b4970SChristoph Hellwig if (!ns) 657a07b4970SChristoph Hellwig goto out; 658a07b4970SChristoph Hellwig config_group_init_type_name(&ns->group, name, &nvmet_ns_type); 659a07b4970SChristoph Hellwig 660a07b4970SChristoph Hellwig pr_info("adding nsid %d to subsystem %s\n", nsid, subsys->subsysnqn); 661a07b4970SChristoph Hellwig 662a07b4970SChristoph Hellwig return &ns->group; 663a07b4970SChristoph Hellwig out: 664a07b4970SChristoph Hellwig return ERR_PTR(ret); 665a07b4970SChristoph Hellwig } 666a07b4970SChristoph Hellwig 667a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_namespaces_group_ops = { 668a07b4970SChristoph Hellwig .make_group = nvmet_ns_make, 669a07b4970SChristoph Hellwig }; 670a07b4970SChristoph Hellwig 67166603a31SBhumika Goyal static const struct config_item_type nvmet_namespaces_type = { 672a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_namespaces_group_ops, 673a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 674a07b4970SChristoph Hellwig }; 675a07b4970SChristoph Hellwig 676cae5b01aSLogan Gunthorpe #ifdef CONFIG_NVME_TARGET_PASSTHRU 677cae5b01aSLogan Gunthorpe 678cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_device_path_show(struct config_item *item, 679cae5b01aSLogan Gunthorpe char *page) 680cae5b01aSLogan Gunthorpe { 681cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 682cae5b01aSLogan Gunthorpe 683cae5b01aSLogan Gunthorpe return snprintf(page, PAGE_SIZE, "%s\n", subsys->passthru_ctrl_path); 684cae5b01aSLogan Gunthorpe } 685cae5b01aSLogan Gunthorpe 686cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_device_path_store(struct config_item *item, 687cae5b01aSLogan Gunthorpe const char *page, size_t count) 688cae5b01aSLogan Gunthorpe { 689cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 690cae5b01aSLogan Gunthorpe size_t len; 691cae5b01aSLogan Gunthorpe int ret; 692cae5b01aSLogan Gunthorpe 693cae5b01aSLogan Gunthorpe mutex_lock(&subsys->lock); 694cae5b01aSLogan Gunthorpe 695cae5b01aSLogan Gunthorpe ret = -EBUSY; 696cae5b01aSLogan Gunthorpe if (subsys->passthru_ctrl) 697cae5b01aSLogan Gunthorpe goto out_unlock; 698cae5b01aSLogan Gunthorpe 699cae5b01aSLogan Gunthorpe ret = -EINVAL; 700cae5b01aSLogan Gunthorpe len = strcspn(page, "\n"); 701cae5b01aSLogan Gunthorpe if (!len) 702cae5b01aSLogan Gunthorpe goto out_unlock; 703cae5b01aSLogan Gunthorpe 704cae5b01aSLogan Gunthorpe kfree(subsys->passthru_ctrl_path); 705cae5b01aSLogan Gunthorpe ret = -ENOMEM; 706cae5b01aSLogan Gunthorpe subsys->passthru_ctrl_path = kstrndup(page, len, GFP_KERNEL); 707cae5b01aSLogan Gunthorpe if (!subsys->passthru_ctrl_path) 708cae5b01aSLogan Gunthorpe goto out_unlock; 709cae5b01aSLogan Gunthorpe 710cae5b01aSLogan Gunthorpe mutex_unlock(&subsys->lock); 711cae5b01aSLogan Gunthorpe 712cae5b01aSLogan Gunthorpe return count; 713cae5b01aSLogan Gunthorpe out_unlock: 714cae5b01aSLogan Gunthorpe mutex_unlock(&subsys->lock); 715cae5b01aSLogan Gunthorpe return ret; 716cae5b01aSLogan Gunthorpe } 717cae5b01aSLogan Gunthorpe CONFIGFS_ATTR(nvmet_passthru_, device_path); 718cae5b01aSLogan Gunthorpe 719cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_enable_show(struct config_item *item, 720cae5b01aSLogan Gunthorpe char *page) 721cae5b01aSLogan Gunthorpe { 722cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 723cae5b01aSLogan Gunthorpe 724cae5b01aSLogan Gunthorpe return sprintf(page, "%d\n", subsys->passthru_ctrl ? 1 : 0); 725cae5b01aSLogan Gunthorpe } 726cae5b01aSLogan Gunthorpe 727cae5b01aSLogan Gunthorpe static ssize_t nvmet_passthru_enable_store(struct config_item *item, 728cae5b01aSLogan Gunthorpe const char *page, size_t count) 729cae5b01aSLogan Gunthorpe { 730cae5b01aSLogan Gunthorpe struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 731cae5b01aSLogan Gunthorpe bool enable; 732cae5b01aSLogan Gunthorpe int ret = 0; 733cae5b01aSLogan Gunthorpe 73499722c8aSChristophe JAILLET if (kstrtobool(page, &enable)) 735cae5b01aSLogan Gunthorpe return -EINVAL; 736cae5b01aSLogan Gunthorpe 737cae5b01aSLogan Gunthorpe if (enable) 738cae5b01aSLogan Gunthorpe ret = nvmet_passthru_ctrl_enable(subsys); 739cae5b01aSLogan Gunthorpe else 740cae5b01aSLogan Gunthorpe nvmet_passthru_ctrl_disable(subsys); 741cae5b01aSLogan Gunthorpe 742cae5b01aSLogan Gunthorpe return ret ? ret : count; 743cae5b01aSLogan Gunthorpe } 744cae5b01aSLogan Gunthorpe CONFIGFS_ATTR(nvmet_passthru_, enable); 745cae5b01aSLogan Gunthorpe 746a2f6a2b8SChaitanya Kulkarni static ssize_t nvmet_passthru_admin_timeout_show(struct config_item *item, 747a2f6a2b8SChaitanya Kulkarni char *page) 748a2f6a2b8SChaitanya Kulkarni { 749a2f6a2b8SChaitanya Kulkarni return sprintf(page, "%u\n", to_subsys(item->ci_parent)->admin_timeout); 750a2f6a2b8SChaitanya Kulkarni } 751a2f6a2b8SChaitanya Kulkarni 752a2f6a2b8SChaitanya Kulkarni static ssize_t nvmet_passthru_admin_timeout_store(struct config_item *item, 753a2f6a2b8SChaitanya Kulkarni const char *page, size_t count) 754a2f6a2b8SChaitanya Kulkarni { 755a2f6a2b8SChaitanya Kulkarni struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 756a2f6a2b8SChaitanya Kulkarni unsigned int timeout; 757a2f6a2b8SChaitanya Kulkarni 758a2f6a2b8SChaitanya Kulkarni if (kstrtouint(page, 0, &timeout)) 759a2f6a2b8SChaitanya Kulkarni return -EINVAL; 760a2f6a2b8SChaitanya Kulkarni subsys->admin_timeout = timeout; 761a2f6a2b8SChaitanya Kulkarni return count; 762a2f6a2b8SChaitanya Kulkarni } 763a2f6a2b8SChaitanya Kulkarni CONFIGFS_ATTR(nvmet_passthru_, admin_timeout); 764a2f6a2b8SChaitanya Kulkarni 76547e9730cSChaitanya Kulkarni static ssize_t nvmet_passthru_io_timeout_show(struct config_item *item, 76647e9730cSChaitanya Kulkarni char *page) 76747e9730cSChaitanya Kulkarni { 76847e9730cSChaitanya Kulkarni return sprintf(page, "%u\n", to_subsys(item->ci_parent)->io_timeout); 76947e9730cSChaitanya Kulkarni } 77047e9730cSChaitanya Kulkarni 77147e9730cSChaitanya Kulkarni static ssize_t nvmet_passthru_io_timeout_store(struct config_item *item, 77247e9730cSChaitanya Kulkarni const char *page, size_t count) 77347e9730cSChaitanya Kulkarni { 77447e9730cSChaitanya Kulkarni struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 77547e9730cSChaitanya Kulkarni unsigned int timeout; 77647e9730cSChaitanya Kulkarni 77747e9730cSChaitanya Kulkarni if (kstrtouint(page, 0, &timeout)) 77847e9730cSChaitanya Kulkarni return -EINVAL; 77947e9730cSChaitanya Kulkarni subsys->io_timeout = timeout; 78047e9730cSChaitanya Kulkarni return count; 78147e9730cSChaitanya Kulkarni } 78247e9730cSChaitanya Kulkarni CONFIGFS_ATTR(nvmet_passthru_, io_timeout); 78347e9730cSChaitanya Kulkarni 78434ad6151SAlan Adamson static ssize_t nvmet_passthru_clear_ids_show(struct config_item *item, 78534ad6151SAlan Adamson char *page) 78634ad6151SAlan Adamson { 78734ad6151SAlan Adamson return sprintf(page, "%u\n", to_subsys(item->ci_parent)->clear_ids); 78834ad6151SAlan Adamson } 78934ad6151SAlan Adamson 79034ad6151SAlan Adamson static ssize_t nvmet_passthru_clear_ids_store(struct config_item *item, 79134ad6151SAlan Adamson const char *page, size_t count) 79234ad6151SAlan Adamson { 79334ad6151SAlan Adamson struct nvmet_subsys *subsys = to_subsys(item->ci_parent); 79434ad6151SAlan Adamson unsigned int clear_ids; 79534ad6151SAlan Adamson 79634ad6151SAlan Adamson if (kstrtouint(page, 0, &clear_ids)) 79734ad6151SAlan Adamson return -EINVAL; 79834ad6151SAlan Adamson subsys->clear_ids = clear_ids; 79934ad6151SAlan Adamson return count; 80034ad6151SAlan Adamson } 80134ad6151SAlan Adamson CONFIGFS_ATTR(nvmet_passthru_, clear_ids); 80234ad6151SAlan Adamson 803cae5b01aSLogan Gunthorpe static struct configfs_attribute *nvmet_passthru_attrs[] = { 804cae5b01aSLogan Gunthorpe &nvmet_passthru_attr_device_path, 805cae5b01aSLogan Gunthorpe &nvmet_passthru_attr_enable, 806a2f6a2b8SChaitanya Kulkarni &nvmet_passthru_attr_admin_timeout, 80747e9730cSChaitanya Kulkarni &nvmet_passthru_attr_io_timeout, 80834ad6151SAlan Adamson &nvmet_passthru_attr_clear_ids, 809cae5b01aSLogan Gunthorpe NULL, 810cae5b01aSLogan Gunthorpe }; 811cae5b01aSLogan Gunthorpe 812cae5b01aSLogan Gunthorpe static const struct config_item_type nvmet_passthru_type = { 813cae5b01aSLogan Gunthorpe .ct_attrs = nvmet_passthru_attrs, 814cae5b01aSLogan Gunthorpe .ct_owner = THIS_MODULE, 815cae5b01aSLogan Gunthorpe }; 816cae5b01aSLogan Gunthorpe 817cae5b01aSLogan Gunthorpe static void nvmet_add_passthru_group(struct nvmet_subsys *subsys) 818cae5b01aSLogan Gunthorpe { 819cae5b01aSLogan Gunthorpe config_group_init_type_name(&subsys->passthru_group, 820cae5b01aSLogan Gunthorpe "passthru", &nvmet_passthru_type); 821cae5b01aSLogan Gunthorpe configfs_add_default_group(&subsys->passthru_group, 822cae5b01aSLogan Gunthorpe &subsys->group); 823cae5b01aSLogan Gunthorpe } 824cae5b01aSLogan Gunthorpe 825cae5b01aSLogan Gunthorpe #else /* CONFIG_NVME_TARGET_PASSTHRU */ 826cae5b01aSLogan Gunthorpe 827cae5b01aSLogan Gunthorpe static void nvmet_add_passthru_group(struct nvmet_subsys *subsys) 828cae5b01aSLogan Gunthorpe { 829cae5b01aSLogan Gunthorpe } 830cae5b01aSLogan Gunthorpe 831cae5b01aSLogan Gunthorpe #endif /* CONFIG_NVME_TARGET_PASSTHRU */ 832cae5b01aSLogan Gunthorpe 833a07b4970SChristoph Hellwig static int nvmet_port_subsys_allow_link(struct config_item *parent, 834a07b4970SChristoph Hellwig struct config_item *target) 835a07b4970SChristoph Hellwig { 836a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(parent->ci_parent); 837a07b4970SChristoph Hellwig struct nvmet_subsys *subsys; 838a07b4970SChristoph Hellwig struct nvmet_subsys_link *link, *p; 839a07b4970SChristoph Hellwig int ret; 840a07b4970SChristoph Hellwig 841a07b4970SChristoph Hellwig if (target->ci_type != &nvmet_subsys_type) { 842a07b4970SChristoph Hellwig pr_err("can only link subsystems into the subsystems dir.!\n"); 843a07b4970SChristoph Hellwig return -EINVAL; 844a07b4970SChristoph Hellwig } 845a07b4970SChristoph Hellwig subsys = to_subsys(target); 846a07b4970SChristoph Hellwig link = kmalloc(sizeof(*link), GFP_KERNEL); 847a07b4970SChristoph Hellwig if (!link) 848a07b4970SChristoph Hellwig return -ENOMEM; 849a07b4970SChristoph Hellwig link->subsys = subsys; 850a07b4970SChristoph Hellwig 851a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 852a07b4970SChristoph Hellwig ret = -EEXIST; 853a07b4970SChristoph Hellwig list_for_each_entry(p, &port->subsystems, entry) { 854a07b4970SChristoph Hellwig if (p->subsys == subsys) 855a07b4970SChristoph Hellwig goto out_free_link; 856a07b4970SChristoph Hellwig } 857a07b4970SChristoph Hellwig 858a07b4970SChristoph Hellwig if (list_empty(&port->subsystems)) { 859a07b4970SChristoph Hellwig ret = nvmet_enable_port(port); 860a07b4970SChristoph Hellwig if (ret) 861a07b4970SChristoph Hellwig goto out_free_link; 862a07b4970SChristoph Hellwig } 863a07b4970SChristoph Hellwig 864a07b4970SChristoph Hellwig list_add_tail(&link->entry, &port->subsystems); 865b662a078SJay Sternberg nvmet_port_disc_changed(port, subsys); 866b662a078SJay Sternberg 867a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 868a07b4970SChristoph Hellwig return 0; 869a07b4970SChristoph Hellwig 870a07b4970SChristoph Hellwig out_free_link: 871a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 872a07b4970SChristoph Hellwig kfree(link); 873a07b4970SChristoph Hellwig return ret; 874a07b4970SChristoph Hellwig } 875a07b4970SChristoph Hellwig 876e16769d4SAndrzej Pietrasiewicz static void nvmet_port_subsys_drop_link(struct config_item *parent, 877a07b4970SChristoph Hellwig struct config_item *target) 878a07b4970SChristoph Hellwig { 879a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(parent->ci_parent); 880a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(target); 881a07b4970SChristoph Hellwig struct nvmet_subsys_link *p; 882a07b4970SChristoph Hellwig 883a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 884a07b4970SChristoph Hellwig list_for_each_entry(p, &port->subsystems, entry) { 885a07b4970SChristoph Hellwig if (p->subsys == subsys) 886a07b4970SChristoph Hellwig goto found; 887a07b4970SChristoph Hellwig } 888a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 889e16769d4SAndrzej Pietrasiewicz return; 890a07b4970SChristoph Hellwig 891a07b4970SChristoph Hellwig found: 892a07b4970SChristoph Hellwig list_del(&p->entry); 8933aed8673SLogan Gunthorpe nvmet_port_del_ctrls(port, subsys); 894b662a078SJay Sternberg nvmet_port_disc_changed(port, subsys); 895b662a078SJay Sternberg 896a07b4970SChristoph Hellwig if (list_empty(&port->subsystems)) 897a07b4970SChristoph Hellwig nvmet_disable_port(port); 898a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 899a07b4970SChristoph Hellwig kfree(p); 900a07b4970SChristoph Hellwig } 901a07b4970SChristoph Hellwig 902a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_port_subsys_item_ops = { 903a07b4970SChristoph Hellwig .allow_link = nvmet_port_subsys_allow_link, 904a07b4970SChristoph Hellwig .drop_link = nvmet_port_subsys_drop_link, 905a07b4970SChristoph Hellwig }; 906a07b4970SChristoph Hellwig 90766603a31SBhumika Goyal static const struct config_item_type nvmet_port_subsys_type = { 908a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_port_subsys_item_ops, 909a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 910a07b4970SChristoph Hellwig }; 911a07b4970SChristoph Hellwig 912a07b4970SChristoph Hellwig static int nvmet_allowed_hosts_allow_link(struct config_item *parent, 913a07b4970SChristoph Hellwig struct config_item *target) 914a07b4970SChristoph Hellwig { 915a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(parent->ci_parent); 916a07b4970SChristoph Hellwig struct nvmet_host *host; 917a07b4970SChristoph Hellwig struct nvmet_host_link *link, *p; 918a07b4970SChristoph Hellwig int ret; 919a07b4970SChristoph Hellwig 920a07b4970SChristoph Hellwig if (target->ci_type != &nvmet_host_type) { 921a07b4970SChristoph Hellwig pr_err("can only link hosts into the allowed_hosts directory!\n"); 922a07b4970SChristoph Hellwig return -EINVAL; 923a07b4970SChristoph Hellwig } 924a07b4970SChristoph Hellwig 925a07b4970SChristoph Hellwig host = to_host(target); 926a07b4970SChristoph Hellwig link = kmalloc(sizeof(*link), GFP_KERNEL); 927a07b4970SChristoph Hellwig if (!link) 928a07b4970SChristoph Hellwig return -ENOMEM; 929a07b4970SChristoph Hellwig link->host = host; 930a07b4970SChristoph Hellwig 931a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 932a07b4970SChristoph Hellwig ret = -EINVAL; 933a07b4970SChristoph Hellwig if (subsys->allow_any_host) { 934a07b4970SChristoph Hellwig pr_err("can't add hosts when allow_any_host is set!\n"); 935a07b4970SChristoph Hellwig goto out_free_link; 936a07b4970SChristoph Hellwig } 937a07b4970SChristoph Hellwig 938a07b4970SChristoph Hellwig ret = -EEXIST; 939a07b4970SChristoph Hellwig list_for_each_entry(p, &subsys->hosts, entry) { 940a07b4970SChristoph Hellwig if (!strcmp(nvmet_host_name(p->host), nvmet_host_name(host))) 941a07b4970SChristoph Hellwig goto out_free_link; 942a07b4970SChristoph Hellwig } 943a07b4970SChristoph Hellwig list_add_tail(&link->entry, &subsys->hosts); 944b662a078SJay Sternberg nvmet_subsys_disc_changed(subsys, host); 945b662a078SJay Sternberg 946a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 947a07b4970SChristoph Hellwig return 0; 948a07b4970SChristoph Hellwig out_free_link: 949a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 950a07b4970SChristoph Hellwig kfree(link); 951a07b4970SChristoph Hellwig return ret; 952a07b4970SChristoph Hellwig } 953a07b4970SChristoph Hellwig 954e16769d4SAndrzej Pietrasiewicz static void nvmet_allowed_hosts_drop_link(struct config_item *parent, 955a07b4970SChristoph Hellwig struct config_item *target) 956a07b4970SChristoph Hellwig { 957a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(parent->ci_parent); 958a07b4970SChristoph Hellwig struct nvmet_host *host = to_host(target); 959a07b4970SChristoph Hellwig struct nvmet_host_link *p; 960a07b4970SChristoph Hellwig 961a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 962a07b4970SChristoph Hellwig list_for_each_entry(p, &subsys->hosts, entry) { 963a07b4970SChristoph Hellwig if (!strcmp(nvmet_host_name(p->host), nvmet_host_name(host))) 964a07b4970SChristoph Hellwig goto found; 965a07b4970SChristoph Hellwig } 966a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 967e16769d4SAndrzej Pietrasiewicz return; 968a07b4970SChristoph Hellwig 969a07b4970SChristoph Hellwig found: 970a07b4970SChristoph Hellwig list_del(&p->entry); 971b662a078SJay Sternberg nvmet_subsys_disc_changed(subsys, host); 972b662a078SJay Sternberg 973a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 974a07b4970SChristoph Hellwig kfree(p); 975a07b4970SChristoph Hellwig } 976a07b4970SChristoph Hellwig 977a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_allowed_hosts_item_ops = { 978a07b4970SChristoph Hellwig .allow_link = nvmet_allowed_hosts_allow_link, 979a07b4970SChristoph Hellwig .drop_link = nvmet_allowed_hosts_drop_link, 980a07b4970SChristoph Hellwig }; 981a07b4970SChristoph Hellwig 98266603a31SBhumika Goyal static const struct config_item_type nvmet_allowed_hosts_type = { 983a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_allowed_hosts_item_ops, 984a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 985a07b4970SChristoph Hellwig }; 986a07b4970SChristoph Hellwig 987a07b4970SChristoph Hellwig static ssize_t nvmet_subsys_attr_allow_any_host_show(struct config_item *item, 988a07b4970SChristoph Hellwig char *page) 989a07b4970SChristoph Hellwig { 990a07b4970SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%d\n", 991a07b4970SChristoph Hellwig to_subsys(item)->allow_any_host); 992a07b4970SChristoph Hellwig } 993a07b4970SChristoph Hellwig 994a07b4970SChristoph Hellwig static ssize_t nvmet_subsys_attr_allow_any_host_store(struct config_item *item, 995a07b4970SChristoph Hellwig const char *page, size_t count) 996a07b4970SChristoph Hellwig { 997a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(item); 998a07b4970SChristoph Hellwig bool allow_any_host; 999a07b4970SChristoph Hellwig int ret = 0; 1000a07b4970SChristoph Hellwig 100199722c8aSChristophe JAILLET if (kstrtobool(page, &allow_any_host)) 1002a07b4970SChristoph Hellwig return -EINVAL; 1003a07b4970SChristoph Hellwig 1004a07b4970SChristoph Hellwig down_write(&nvmet_config_sem); 1005a07b4970SChristoph Hellwig if (allow_any_host && !list_empty(&subsys->hosts)) { 1006a07b4970SChristoph Hellwig pr_err("Can't set allow_any_host when explicit hosts are set!\n"); 1007a07b4970SChristoph Hellwig ret = -EINVAL; 1008a07b4970SChristoph Hellwig goto out_unlock; 1009a07b4970SChristoph Hellwig } 1010a07b4970SChristoph Hellwig 1011b662a078SJay Sternberg if (subsys->allow_any_host != allow_any_host) { 1012a07b4970SChristoph Hellwig subsys->allow_any_host = allow_any_host; 1013b662a078SJay Sternberg nvmet_subsys_disc_changed(subsys, NULL); 1014b662a078SJay Sternberg } 1015b662a078SJay Sternberg 1016a07b4970SChristoph Hellwig out_unlock: 1017a07b4970SChristoph Hellwig up_write(&nvmet_config_sem); 1018a07b4970SChristoph Hellwig return ret ? ret : count; 1019a07b4970SChristoph Hellwig } 1020a07b4970SChristoph Hellwig 1021a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_subsys_, attr_allow_any_host); 1022a07b4970SChristoph Hellwig 102341528f80SJohannes Thumshirn static ssize_t nvmet_subsys_attr_version_show(struct config_item *item, 1024c61d788bSJohannes Thumshirn char *page) 1025c61d788bSJohannes Thumshirn { 1026c61d788bSJohannes Thumshirn struct nvmet_subsys *subsys = to_subsys(item); 1027c61d788bSJohannes Thumshirn 1028c61d788bSJohannes Thumshirn if (NVME_TERTIARY(subsys->ver)) 1029a0f0dbaaSChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%llu.%llu.%llu\n", 1030a0f0dbaaSChaitanya Kulkarni NVME_MAJOR(subsys->ver), 1031a0f0dbaaSChaitanya Kulkarni NVME_MINOR(subsys->ver), 1032a0f0dbaaSChaitanya Kulkarni NVME_TERTIARY(subsys->ver)); 1033527123c7SChaitanya Kulkarni 1034a0f0dbaaSChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%llu.%llu\n", 1035a0f0dbaaSChaitanya Kulkarni NVME_MAJOR(subsys->ver), 1036a0f0dbaaSChaitanya Kulkarni NVME_MINOR(subsys->ver)); 1037c61d788bSJohannes Thumshirn } 1038c61d788bSJohannes Thumshirn 103987fd4cc1SNoam Gottlieb static ssize_t 104087fd4cc1SNoam Gottlieb nvmet_subsys_attr_version_store_locked(struct nvmet_subsys *subsys, 1041c61d788bSJohannes Thumshirn const char *page, size_t count) 1042c61d788bSJohannes Thumshirn { 1043c61d788bSJohannes Thumshirn int major, minor, tertiary = 0; 1044c61d788bSJohannes Thumshirn int ret; 1045c61d788bSJohannes Thumshirn 104687fd4cc1SNoam Gottlieb if (subsys->subsys_discovered) { 104787fd4cc1SNoam Gottlieb if (NVME_TERTIARY(subsys->ver)) 104887fd4cc1SNoam Gottlieb pr_err("Can't set version number. %llu.%llu.%llu is already assigned\n", 104987fd4cc1SNoam Gottlieb NVME_MAJOR(subsys->ver), 105087fd4cc1SNoam Gottlieb NVME_MINOR(subsys->ver), 105187fd4cc1SNoam Gottlieb NVME_TERTIARY(subsys->ver)); 105287fd4cc1SNoam Gottlieb else 105387fd4cc1SNoam Gottlieb pr_err("Can't set version number. %llu.%llu is already assigned\n", 105487fd4cc1SNoam Gottlieb NVME_MAJOR(subsys->ver), 105587fd4cc1SNoam Gottlieb NVME_MINOR(subsys->ver)); 105687fd4cc1SNoam Gottlieb return -EINVAL; 105787fd4cc1SNoam Gottlieb } 105887fd4cc1SNoam Gottlieb 1059ba76af67SLogan Gunthorpe /* passthru subsystems use the underlying controller's version */ 1060ab7a2737SChristoph Hellwig if (nvmet_is_passthru_subsys(subsys)) 1061ba76af67SLogan Gunthorpe return -EINVAL; 1062ba76af67SLogan Gunthorpe 1063c61d788bSJohannes Thumshirn ret = sscanf(page, "%d.%d.%d\n", &major, &minor, &tertiary); 1064c61d788bSJohannes Thumshirn if (ret != 2 && ret != 3) 1065c61d788bSJohannes Thumshirn return -EINVAL; 1066c61d788bSJohannes Thumshirn 1067c61d788bSJohannes Thumshirn subsys->ver = NVME_VS(major, minor, tertiary); 1068c61d788bSJohannes Thumshirn 1069c61d788bSJohannes Thumshirn return count; 1070c61d788bSJohannes Thumshirn } 107187fd4cc1SNoam Gottlieb 107287fd4cc1SNoam Gottlieb static ssize_t nvmet_subsys_attr_version_store(struct config_item *item, 107387fd4cc1SNoam Gottlieb const char *page, size_t count) 107487fd4cc1SNoam Gottlieb { 107587fd4cc1SNoam Gottlieb struct nvmet_subsys *subsys = to_subsys(item); 107687fd4cc1SNoam Gottlieb ssize_t ret; 107787fd4cc1SNoam Gottlieb 107887fd4cc1SNoam Gottlieb down_write(&nvmet_config_sem); 107987fd4cc1SNoam Gottlieb mutex_lock(&subsys->lock); 108087fd4cc1SNoam Gottlieb ret = nvmet_subsys_attr_version_store_locked(subsys, page, count); 108187fd4cc1SNoam Gottlieb mutex_unlock(&subsys->lock); 108287fd4cc1SNoam Gottlieb up_write(&nvmet_config_sem); 108387fd4cc1SNoam Gottlieb 108487fd4cc1SNoam Gottlieb return ret; 108587fd4cc1SNoam Gottlieb } 108641528f80SJohannes Thumshirn CONFIGFS_ATTR(nvmet_subsys_, attr_version); 1087c61d788bSJohannes Thumshirn 1088e13b0615SNoam Gottlieb /* See Section 1.5 of NVMe 1.4 */ 1089e13b0615SNoam Gottlieb static bool nvmet_is_ascii(const char c) 1090e13b0615SNoam Gottlieb { 1091e13b0615SNoam Gottlieb return c >= 0x20 && c <= 0x7e; 1092e13b0615SNoam Gottlieb } 1093e13b0615SNoam Gottlieb 1094fcbc5459SJohannes Thumshirn static ssize_t nvmet_subsys_attr_serial_show(struct config_item *item, 1095fcbc5459SJohannes Thumshirn char *page) 1096fcbc5459SJohannes Thumshirn { 1097fcbc5459SJohannes Thumshirn struct nvmet_subsys *subsys = to_subsys(item); 1098fcbc5459SJohannes Thumshirn 10990bd46e22SDan Carpenter return snprintf(page, PAGE_SIZE, "%.*s\n", 1100f0406481SHannes Reinecke NVMET_SN_MAX_SIZE, subsys->serial); 1101fcbc5459SJohannes Thumshirn } 1102fcbc5459SJohannes Thumshirn 11037ae023c5SNoam Gottlieb static ssize_t 11047ae023c5SNoam Gottlieb nvmet_subsys_attr_serial_store_locked(struct nvmet_subsys *subsys, 1105fcbc5459SJohannes Thumshirn const char *page, size_t count) 1106fcbc5459SJohannes Thumshirn { 1107e13b0615SNoam Gottlieb int pos, len = strcspn(page, "\n"); 1108d3a9b0caSChaitanya Kulkarni 11097ae023c5SNoam Gottlieb if (subsys->subsys_discovered) { 11107ae023c5SNoam Gottlieb pr_err("Can't set serial number. %s is already assigned\n", 11117ae023c5SNoam Gottlieb subsys->serial); 11127ae023c5SNoam Gottlieb return -EINVAL; 11137ae023c5SNoam Gottlieb } 11147ae023c5SNoam Gottlieb 1115e13b0615SNoam Gottlieb if (!len || len > NVMET_SN_MAX_SIZE) { 1116e13b0615SNoam Gottlieb pr_err("Serial Number can not be empty or exceed %d Bytes\n", 1117e13b0615SNoam Gottlieb NVMET_SN_MAX_SIZE); 1118d3a9b0caSChaitanya Kulkarni return -EINVAL; 1119e13b0615SNoam Gottlieb } 1120e13b0615SNoam Gottlieb 1121e13b0615SNoam Gottlieb for (pos = 0; pos < len; pos++) { 1122e13b0615SNoam Gottlieb if (!nvmet_is_ascii(page[pos])) { 1123e13b0615SNoam Gottlieb pr_err("Serial Number must contain only ASCII strings\n"); 1124e13b0615SNoam Gottlieb return -EINVAL; 1125e13b0615SNoam Gottlieb } 1126e13b0615SNoam Gottlieb } 1127fcbc5459SJohannes Thumshirn 11287ae023c5SNoam Gottlieb memcpy_and_pad(subsys->serial, NVMET_SN_MAX_SIZE, page, len, ' '); 11297ae023c5SNoam Gottlieb 11307ae023c5SNoam Gottlieb return count; 11317ae023c5SNoam Gottlieb } 11327ae023c5SNoam Gottlieb 11337ae023c5SNoam Gottlieb static ssize_t nvmet_subsys_attr_serial_store(struct config_item *item, 11347ae023c5SNoam Gottlieb const char *page, size_t count) 11357ae023c5SNoam Gottlieb { 11367ae023c5SNoam Gottlieb struct nvmet_subsys *subsys = to_subsys(item); 11377ae023c5SNoam Gottlieb ssize_t ret; 11387ae023c5SNoam Gottlieb 1139fcbc5459SJohannes Thumshirn down_write(&nvmet_config_sem); 1140e13b0615SNoam Gottlieb mutex_lock(&subsys->lock); 11417ae023c5SNoam Gottlieb ret = nvmet_subsys_attr_serial_store_locked(subsys, page, count); 1142e13b0615SNoam Gottlieb mutex_unlock(&subsys->lock); 1143fcbc5459SJohannes Thumshirn up_write(&nvmet_config_sem); 1144fcbc5459SJohannes Thumshirn 11457ae023c5SNoam Gottlieb return ret; 1146fcbc5459SJohannes Thumshirn } 1147fcbc5459SJohannes Thumshirn CONFIGFS_ATTR(nvmet_subsys_, attr_serial); 1148fcbc5459SJohannes Thumshirn 114994a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_min_show(struct config_item *item, 115094a39d61SChaitanya Kulkarni char *page) 115194a39d61SChaitanya Kulkarni { 115294a39d61SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->cntlid_min); 115394a39d61SChaitanya Kulkarni } 115494a39d61SChaitanya Kulkarni 115594a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_min_store(struct config_item *item, 115694a39d61SChaitanya Kulkarni const char *page, size_t cnt) 115794a39d61SChaitanya Kulkarni { 115894a39d61SChaitanya Kulkarni u16 cntlid_min; 115994a39d61SChaitanya Kulkarni 116094a39d61SChaitanya Kulkarni if (sscanf(page, "%hu\n", &cntlid_min) != 1) 116194a39d61SChaitanya Kulkarni return -EINVAL; 116294a39d61SChaitanya Kulkarni 116394a39d61SChaitanya Kulkarni if (cntlid_min == 0) 116494a39d61SChaitanya Kulkarni return -EINVAL; 116594a39d61SChaitanya Kulkarni 116694a39d61SChaitanya Kulkarni down_write(&nvmet_config_sem); 116794a39d61SChaitanya Kulkarni if (cntlid_min >= to_subsys(item)->cntlid_max) 116894a39d61SChaitanya Kulkarni goto out_unlock; 116994a39d61SChaitanya Kulkarni to_subsys(item)->cntlid_min = cntlid_min; 117094a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 117194a39d61SChaitanya Kulkarni return cnt; 117294a39d61SChaitanya Kulkarni 117394a39d61SChaitanya Kulkarni out_unlock: 117494a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 117594a39d61SChaitanya Kulkarni return -EINVAL; 117694a39d61SChaitanya Kulkarni } 117794a39d61SChaitanya Kulkarni CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_min); 117894a39d61SChaitanya Kulkarni 117994a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_max_show(struct config_item *item, 118094a39d61SChaitanya Kulkarni char *page) 118194a39d61SChaitanya Kulkarni { 118294a39d61SChaitanya Kulkarni return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->cntlid_max); 118394a39d61SChaitanya Kulkarni } 118494a39d61SChaitanya Kulkarni 118594a39d61SChaitanya Kulkarni static ssize_t nvmet_subsys_attr_cntlid_max_store(struct config_item *item, 118694a39d61SChaitanya Kulkarni const char *page, size_t cnt) 118794a39d61SChaitanya Kulkarni { 118894a39d61SChaitanya Kulkarni u16 cntlid_max; 118994a39d61SChaitanya Kulkarni 119094a39d61SChaitanya Kulkarni if (sscanf(page, "%hu\n", &cntlid_max) != 1) 119194a39d61SChaitanya Kulkarni return -EINVAL; 119294a39d61SChaitanya Kulkarni 119394a39d61SChaitanya Kulkarni if (cntlid_max == 0) 119494a39d61SChaitanya Kulkarni return -EINVAL; 119594a39d61SChaitanya Kulkarni 119694a39d61SChaitanya Kulkarni down_write(&nvmet_config_sem); 119794a39d61SChaitanya Kulkarni if (cntlid_max <= to_subsys(item)->cntlid_min) 119894a39d61SChaitanya Kulkarni goto out_unlock; 119994a39d61SChaitanya Kulkarni to_subsys(item)->cntlid_max = cntlid_max; 120094a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 120194a39d61SChaitanya Kulkarni return cnt; 120294a39d61SChaitanya Kulkarni 120394a39d61SChaitanya Kulkarni out_unlock: 120494a39d61SChaitanya Kulkarni up_write(&nvmet_config_sem); 120594a39d61SChaitanya Kulkarni return -EINVAL; 120694a39d61SChaitanya Kulkarni } 120794a39d61SChaitanya Kulkarni CONFIGFS_ATTR(nvmet_subsys_, attr_cntlid_max); 120894a39d61SChaitanya Kulkarni 1209013b7ebeSMark Ruijter static ssize_t nvmet_subsys_attr_model_show(struct config_item *item, 1210013b7ebeSMark Ruijter char *page) 1211013b7ebeSMark Ruijter { 1212013b7ebeSMark Ruijter struct nvmet_subsys *subsys = to_subsys(item); 1213013b7ebeSMark Ruijter 12140d148efdSNoam Gottlieb return snprintf(page, PAGE_SIZE, "%s\n", subsys->model_number); 1215013b7ebeSMark Ruijter } 1216013b7ebeSMark Ruijter 1217d9f273b7SMax Gurtovoy static ssize_t nvmet_subsys_attr_model_store_locked(struct nvmet_subsys *subsys, 1218013b7ebeSMark Ruijter const char *page, size_t count) 1219013b7ebeSMark Ruijter { 1220013b7ebeSMark Ruijter int pos = 0, len; 1221becc4cacSAleksandr Miloserdov char *val; 1222013b7ebeSMark Ruijter 12230d148efdSNoam Gottlieb if (subsys->subsys_discovered) { 1224d9f273b7SMax Gurtovoy pr_err("Can't set model number. %s is already assigned\n", 1225d9f273b7SMax Gurtovoy subsys->model_number); 1226d9f273b7SMax Gurtovoy return -EINVAL; 1227d9f273b7SMax Gurtovoy } 1228d9f273b7SMax Gurtovoy 1229013b7ebeSMark Ruijter len = strcspn(page, "\n"); 1230013b7ebeSMark Ruijter if (!len) 1231013b7ebeSMark Ruijter return -EINVAL; 1232013b7ebeSMark Ruijter 123348b4c010SNoam Gottlieb if (len > NVMET_MN_MAX_SIZE) { 1234ccc1003bSColin Ian King pr_err("Model number size can not exceed %d Bytes\n", 123548b4c010SNoam Gottlieb NVMET_MN_MAX_SIZE); 123648b4c010SNoam Gottlieb return -EINVAL; 123748b4c010SNoam Gottlieb } 123848b4c010SNoam Gottlieb 1239013b7ebeSMark Ruijter for (pos = 0; pos < len; pos++) { 1240013b7ebeSMark Ruijter if (!nvmet_is_ascii(page[pos])) 1241013b7ebeSMark Ruijter return -EINVAL; 1242013b7ebeSMark Ruijter } 1243013b7ebeSMark Ruijter 1244becc4cacSAleksandr Miloserdov val = kmemdup_nul(page, len, GFP_KERNEL); 1245becc4cacSAleksandr Miloserdov if (!val) 1246013b7ebeSMark Ruijter return -ENOMEM; 1247becc4cacSAleksandr Miloserdov kfree(subsys->model_number); 1248becc4cacSAleksandr Miloserdov subsys->model_number = val; 1249d9f273b7SMax Gurtovoy return count; 1250013b7ebeSMark Ruijter } 1251d9f273b7SMax Gurtovoy 1252d9f273b7SMax Gurtovoy static ssize_t nvmet_subsys_attr_model_store(struct config_item *item, 1253d9f273b7SMax Gurtovoy const char *page, size_t count) 1254d9f273b7SMax Gurtovoy { 1255d9f273b7SMax Gurtovoy struct nvmet_subsys *subsys = to_subsys(item); 1256d9f273b7SMax Gurtovoy ssize_t ret; 1257013b7ebeSMark Ruijter 1258013b7ebeSMark Ruijter down_write(&nvmet_config_sem); 1259013b7ebeSMark Ruijter mutex_lock(&subsys->lock); 1260d9f273b7SMax Gurtovoy ret = nvmet_subsys_attr_model_store_locked(subsys, page, count); 1261013b7ebeSMark Ruijter mutex_unlock(&subsys->lock); 1262013b7ebeSMark Ruijter up_write(&nvmet_config_sem); 1263013b7ebeSMark Ruijter 1264d9f273b7SMax Gurtovoy return ret; 1265013b7ebeSMark Ruijter } 1266013b7ebeSMark Ruijter CONFIGFS_ATTR(nvmet_subsys_, attr_model); 1267013b7ebeSMark Ruijter 126823855abdSAleksandr Miloserdov static ssize_t nvmet_subsys_attr_ieee_oui_show(struct config_item *item, 126923855abdSAleksandr Miloserdov char *page) 127023855abdSAleksandr Miloserdov { 127123855abdSAleksandr Miloserdov struct nvmet_subsys *subsys = to_subsys(item); 127223855abdSAleksandr Miloserdov 127323855abdSAleksandr Miloserdov return sysfs_emit(page, "0x%06x\n", subsys->ieee_oui); 127423855abdSAleksandr Miloserdov } 127523855abdSAleksandr Miloserdov 127623855abdSAleksandr Miloserdov static ssize_t nvmet_subsys_attr_ieee_oui_store_locked(struct nvmet_subsys *subsys, 127723855abdSAleksandr Miloserdov const char *page, size_t count) 127823855abdSAleksandr Miloserdov { 127923855abdSAleksandr Miloserdov uint32_t val = 0; 128023855abdSAleksandr Miloserdov int ret; 128123855abdSAleksandr Miloserdov 128223855abdSAleksandr Miloserdov if (subsys->subsys_discovered) { 128323855abdSAleksandr Miloserdov pr_err("Can't set IEEE OUI. 0x%06x is already assigned\n", 128423855abdSAleksandr Miloserdov subsys->ieee_oui); 128523855abdSAleksandr Miloserdov return -EINVAL; 128623855abdSAleksandr Miloserdov } 128723855abdSAleksandr Miloserdov 128823855abdSAleksandr Miloserdov ret = kstrtou32(page, 0, &val); 128923855abdSAleksandr Miloserdov if (ret < 0) 129023855abdSAleksandr Miloserdov return ret; 129123855abdSAleksandr Miloserdov 129223855abdSAleksandr Miloserdov if (val >= 0x1000000) 129323855abdSAleksandr Miloserdov return -EINVAL; 129423855abdSAleksandr Miloserdov 129523855abdSAleksandr Miloserdov subsys->ieee_oui = val; 129623855abdSAleksandr Miloserdov 129723855abdSAleksandr Miloserdov return count; 129823855abdSAleksandr Miloserdov } 129923855abdSAleksandr Miloserdov 130023855abdSAleksandr Miloserdov static ssize_t nvmet_subsys_attr_ieee_oui_store(struct config_item *item, 130123855abdSAleksandr Miloserdov const char *page, size_t count) 130223855abdSAleksandr Miloserdov { 130323855abdSAleksandr Miloserdov struct nvmet_subsys *subsys = to_subsys(item); 130423855abdSAleksandr Miloserdov ssize_t ret; 130523855abdSAleksandr Miloserdov 130623855abdSAleksandr Miloserdov down_write(&nvmet_config_sem); 130723855abdSAleksandr Miloserdov mutex_lock(&subsys->lock); 130823855abdSAleksandr Miloserdov ret = nvmet_subsys_attr_ieee_oui_store_locked(subsys, page, count); 130923855abdSAleksandr Miloserdov mutex_unlock(&subsys->lock); 131023855abdSAleksandr Miloserdov up_write(&nvmet_config_sem); 131123855abdSAleksandr Miloserdov 131223855abdSAleksandr Miloserdov return ret; 131323855abdSAleksandr Miloserdov } 131423855abdSAleksandr Miloserdov CONFIGFS_ATTR(nvmet_subsys_, attr_ieee_oui); 131523855abdSAleksandr Miloserdov 131668c5444cSAleksandr Miloserdov static ssize_t nvmet_subsys_attr_firmware_show(struct config_item *item, 131768c5444cSAleksandr Miloserdov char *page) 131868c5444cSAleksandr Miloserdov { 131968c5444cSAleksandr Miloserdov struct nvmet_subsys *subsys = to_subsys(item); 132068c5444cSAleksandr Miloserdov 132168c5444cSAleksandr Miloserdov return sysfs_emit(page, "%s\n", subsys->firmware_rev); 132268c5444cSAleksandr Miloserdov } 132368c5444cSAleksandr Miloserdov 132468c5444cSAleksandr Miloserdov static ssize_t nvmet_subsys_attr_firmware_store_locked(struct nvmet_subsys *subsys, 132568c5444cSAleksandr Miloserdov const char *page, size_t count) 132668c5444cSAleksandr Miloserdov { 132768c5444cSAleksandr Miloserdov int pos = 0, len; 132868c5444cSAleksandr Miloserdov char *val; 132968c5444cSAleksandr Miloserdov 133068c5444cSAleksandr Miloserdov if (subsys->subsys_discovered) { 133168c5444cSAleksandr Miloserdov pr_err("Can't set firmware revision. %s is already assigned\n", 133268c5444cSAleksandr Miloserdov subsys->firmware_rev); 133368c5444cSAleksandr Miloserdov return -EINVAL; 133468c5444cSAleksandr Miloserdov } 133568c5444cSAleksandr Miloserdov 133668c5444cSAleksandr Miloserdov len = strcspn(page, "\n"); 133768c5444cSAleksandr Miloserdov if (!len) 133868c5444cSAleksandr Miloserdov return -EINVAL; 133968c5444cSAleksandr Miloserdov 134068c5444cSAleksandr Miloserdov if (len > NVMET_FR_MAX_SIZE) { 134168c5444cSAleksandr Miloserdov pr_err("Firmware revision size can not exceed %d Bytes\n", 134268c5444cSAleksandr Miloserdov NVMET_FR_MAX_SIZE); 134368c5444cSAleksandr Miloserdov return -EINVAL; 134468c5444cSAleksandr Miloserdov } 134568c5444cSAleksandr Miloserdov 134668c5444cSAleksandr Miloserdov for (pos = 0; pos < len; pos++) { 134768c5444cSAleksandr Miloserdov if (!nvmet_is_ascii(page[pos])) 134868c5444cSAleksandr Miloserdov return -EINVAL; 134968c5444cSAleksandr Miloserdov } 135068c5444cSAleksandr Miloserdov 135168c5444cSAleksandr Miloserdov val = kmemdup_nul(page, len, GFP_KERNEL); 135268c5444cSAleksandr Miloserdov if (!val) 135368c5444cSAleksandr Miloserdov return -ENOMEM; 135468c5444cSAleksandr Miloserdov 135568c5444cSAleksandr Miloserdov kfree(subsys->firmware_rev); 135668c5444cSAleksandr Miloserdov 135768c5444cSAleksandr Miloserdov subsys->firmware_rev = val; 135868c5444cSAleksandr Miloserdov 135968c5444cSAleksandr Miloserdov return count; 136068c5444cSAleksandr Miloserdov } 136168c5444cSAleksandr Miloserdov 136268c5444cSAleksandr Miloserdov static ssize_t nvmet_subsys_attr_firmware_store(struct config_item *item, 136368c5444cSAleksandr Miloserdov const char *page, size_t count) 136468c5444cSAleksandr Miloserdov { 136568c5444cSAleksandr Miloserdov struct nvmet_subsys *subsys = to_subsys(item); 136668c5444cSAleksandr Miloserdov ssize_t ret; 136768c5444cSAleksandr Miloserdov 136868c5444cSAleksandr Miloserdov down_write(&nvmet_config_sem); 136968c5444cSAleksandr Miloserdov mutex_lock(&subsys->lock); 137068c5444cSAleksandr Miloserdov ret = nvmet_subsys_attr_firmware_store_locked(subsys, page, count); 137168c5444cSAleksandr Miloserdov mutex_unlock(&subsys->lock); 137268c5444cSAleksandr Miloserdov up_write(&nvmet_config_sem); 137368c5444cSAleksandr Miloserdov 137468c5444cSAleksandr Miloserdov return ret; 137568c5444cSAleksandr Miloserdov } 137668c5444cSAleksandr Miloserdov CONFIGFS_ATTR(nvmet_subsys_, attr_firmware); 137768c5444cSAleksandr Miloserdov 1378ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 1379ea52ac1cSIsrael Rukshin static ssize_t nvmet_subsys_attr_pi_enable_show(struct config_item *item, 1380ea52ac1cSIsrael Rukshin char *page) 1381ea52ac1cSIsrael Rukshin { 1382ea52ac1cSIsrael Rukshin return snprintf(page, PAGE_SIZE, "%d\n", to_subsys(item)->pi_support); 1383ea52ac1cSIsrael Rukshin } 1384ea52ac1cSIsrael Rukshin 1385ea52ac1cSIsrael Rukshin static ssize_t nvmet_subsys_attr_pi_enable_store(struct config_item *item, 1386ea52ac1cSIsrael Rukshin const char *page, size_t count) 1387ea52ac1cSIsrael Rukshin { 1388ea52ac1cSIsrael Rukshin struct nvmet_subsys *subsys = to_subsys(item); 1389ea52ac1cSIsrael Rukshin bool pi_enable; 1390ea52ac1cSIsrael Rukshin 139199722c8aSChristophe JAILLET if (kstrtobool(page, &pi_enable)) 1392ea52ac1cSIsrael Rukshin return -EINVAL; 1393ea52ac1cSIsrael Rukshin 1394ea52ac1cSIsrael Rukshin subsys->pi_support = pi_enable; 1395ea52ac1cSIsrael Rukshin return count; 1396ea52ac1cSIsrael Rukshin } 1397ea52ac1cSIsrael Rukshin CONFIGFS_ATTR(nvmet_subsys_, attr_pi_enable); 1398ea52ac1cSIsrael Rukshin #endif 1399ea52ac1cSIsrael Rukshin 14003e980f59SDaniel Wagner static ssize_t nvmet_subsys_attr_qid_max_show(struct config_item *item, 14013e980f59SDaniel Wagner char *page) 14023e980f59SDaniel Wagner { 14033e980f59SDaniel Wagner return snprintf(page, PAGE_SIZE, "%u\n", to_subsys(item)->max_qid); 14043e980f59SDaniel Wagner } 14053e980f59SDaniel Wagner 14063e980f59SDaniel Wagner static ssize_t nvmet_subsys_attr_qid_max_store(struct config_item *item, 14073e980f59SDaniel Wagner const char *page, size_t cnt) 14083e980f59SDaniel Wagner { 14092be2cd52SDaniel Wagner struct nvmet_subsys *subsys = to_subsys(item); 14102be2cd52SDaniel Wagner struct nvmet_ctrl *ctrl; 14113e980f59SDaniel Wagner u16 qid_max; 14123e980f59SDaniel Wagner 14133e980f59SDaniel Wagner if (sscanf(page, "%hu\n", &qid_max) != 1) 14143e980f59SDaniel Wagner return -EINVAL; 14153e980f59SDaniel Wagner 14163e980f59SDaniel Wagner if (qid_max < 1 || qid_max > NVMET_NR_QUEUES) 14173e980f59SDaniel Wagner return -EINVAL; 14183e980f59SDaniel Wagner 14193e980f59SDaniel Wagner down_write(&nvmet_config_sem); 14202be2cd52SDaniel Wagner subsys->max_qid = qid_max; 14212be2cd52SDaniel Wagner 14222be2cd52SDaniel Wagner /* Force reconnect */ 14232be2cd52SDaniel Wagner list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) 14242be2cd52SDaniel Wagner ctrl->ops->delete_ctrl(ctrl); 14253e980f59SDaniel Wagner up_write(&nvmet_config_sem); 14262be2cd52SDaniel Wagner 14273e980f59SDaniel Wagner return cnt; 14283e980f59SDaniel Wagner } 14293e980f59SDaniel Wagner CONFIGFS_ATTR(nvmet_subsys_, attr_qid_max); 14303e980f59SDaniel Wagner 1431a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_subsys_attrs[] = { 1432a07b4970SChristoph Hellwig &nvmet_subsys_attr_attr_allow_any_host, 143341528f80SJohannes Thumshirn &nvmet_subsys_attr_attr_version, 1434fcbc5459SJohannes Thumshirn &nvmet_subsys_attr_attr_serial, 143594a39d61SChaitanya Kulkarni &nvmet_subsys_attr_attr_cntlid_min, 143694a39d61SChaitanya Kulkarni &nvmet_subsys_attr_attr_cntlid_max, 1437013b7ebeSMark Ruijter &nvmet_subsys_attr_attr_model, 14383e980f59SDaniel Wagner &nvmet_subsys_attr_attr_qid_max, 143923855abdSAleksandr Miloserdov &nvmet_subsys_attr_attr_ieee_oui, 144068c5444cSAleksandr Miloserdov &nvmet_subsys_attr_attr_firmware, 1441ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 1442ea52ac1cSIsrael Rukshin &nvmet_subsys_attr_attr_pi_enable, 1443ea52ac1cSIsrael Rukshin #endif 1444a07b4970SChristoph Hellwig NULL, 1445a07b4970SChristoph Hellwig }; 1446a07b4970SChristoph Hellwig 1447a07b4970SChristoph Hellwig /* 1448a07b4970SChristoph Hellwig * Subsystem structures & folder operation functions below 1449a07b4970SChristoph Hellwig */ 1450a07b4970SChristoph Hellwig static void nvmet_subsys_release(struct config_item *item) 1451a07b4970SChristoph Hellwig { 1452a07b4970SChristoph Hellwig struct nvmet_subsys *subsys = to_subsys(item); 1453a07b4970SChristoph Hellwig 1454344770b0SSagi Grimberg nvmet_subsys_del_ctrls(subsys); 1455a07b4970SChristoph Hellwig nvmet_subsys_put(subsys); 1456a07b4970SChristoph Hellwig } 1457a07b4970SChristoph Hellwig 1458a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_subsys_item_ops = { 1459a07b4970SChristoph Hellwig .release = nvmet_subsys_release, 1460a07b4970SChristoph Hellwig }; 1461a07b4970SChristoph Hellwig 146266603a31SBhumika Goyal static const struct config_item_type nvmet_subsys_type = { 1463a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_subsys_item_ops, 1464a07b4970SChristoph Hellwig .ct_attrs = nvmet_subsys_attrs, 1465a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1466a07b4970SChristoph Hellwig }; 1467a07b4970SChristoph Hellwig 1468a07b4970SChristoph Hellwig static struct config_group *nvmet_subsys_make(struct config_group *group, 1469a07b4970SChristoph Hellwig const char *name) 1470a07b4970SChristoph Hellwig { 1471a07b4970SChristoph Hellwig struct nvmet_subsys *subsys; 1472a07b4970SChristoph Hellwig 1473a07b4970SChristoph Hellwig if (sysfs_streq(name, NVME_DISC_SUBSYS_NAME)) { 1474a07b4970SChristoph Hellwig pr_err("can't create discovery subsystem through configfs\n"); 1475a07b4970SChristoph Hellwig return ERR_PTR(-EINVAL); 1476a07b4970SChristoph Hellwig } 1477a07b4970SChristoph Hellwig 1478a07b4970SChristoph Hellwig subsys = nvmet_subsys_alloc(name, NVME_NQN_NVME); 14796b7e631bSMinwoo Im if (IS_ERR(subsys)) 14806b7e631bSMinwoo Im return ERR_CAST(subsys); 1481a07b4970SChristoph Hellwig 1482a07b4970SChristoph Hellwig config_group_init_type_name(&subsys->group, name, &nvmet_subsys_type); 1483a07b4970SChristoph Hellwig 1484a07b4970SChristoph Hellwig config_group_init_type_name(&subsys->namespaces_group, 1485a07b4970SChristoph Hellwig "namespaces", &nvmet_namespaces_type); 1486a07b4970SChristoph Hellwig configfs_add_default_group(&subsys->namespaces_group, &subsys->group); 1487a07b4970SChristoph Hellwig 1488a07b4970SChristoph Hellwig config_group_init_type_name(&subsys->allowed_hosts_group, 1489a07b4970SChristoph Hellwig "allowed_hosts", &nvmet_allowed_hosts_type); 1490a07b4970SChristoph Hellwig configfs_add_default_group(&subsys->allowed_hosts_group, 1491a07b4970SChristoph Hellwig &subsys->group); 1492a07b4970SChristoph Hellwig 1493cae5b01aSLogan Gunthorpe nvmet_add_passthru_group(subsys); 1494cae5b01aSLogan Gunthorpe 1495a07b4970SChristoph Hellwig return &subsys->group; 1496a07b4970SChristoph Hellwig } 1497a07b4970SChristoph Hellwig 1498a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_subsystems_group_ops = { 1499a07b4970SChristoph Hellwig .make_group = nvmet_subsys_make, 1500a07b4970SChristoph Hellwig }; 1501a07b4970SChristoph Hellwig 150266603a31SBhumika Goyal static const struct config_item_type nvmet_subsystems_type = { 1503a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_subsystems_group_ops, 1504a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1505a07b4970SChristoph Hellwig }; 1506a07b4970SChristoph Hellwig 1507a07b4970SChristoph Hellwig static ssize_t nvmet_referral_enable_show(struct config_item *item, 1508a07b4970SChristoph Hellwig char *page) 1509a07b4970SChristoph Hellwig { 1510a07b4970SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%d\n", to_nvmet_port(item)->enabled); 1511a07b4970SChristoph Hellwig } 1512a07b4970SChristoph Hellwig 1513a07b4970SChristoph Hellwig static ssize_t nvmet_referral_enable_store(struct config_item *item, 1514a07b4970SChristoph Hellwig const char *page, size_t count) 1515a07b4970SChristoph Hellwig { 1516a07b4970SChristoph Hellwig struct nvmet_port *parent = to_nvmet_port(item->ci_parent->ci_parent); 1517a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1518a07b4970SChristoph Hellwig bool enable; 1519a07b4970SChristoph Hellwig 152099722c8aSChristophe JAILLET if (kstrtobool(page, &enable)) 1521a07b4970SChristoph Hellwig goto inval; 1522a07b4970SChristoph Hellwig 1523a07b4970SChristoph Hellwig if (enable) 1524a07b4970SChristoph Hellwig nvmet_referral_enable(parent, port); 1525a07b4970SChristoph Hellwig else 1526b662a078SJay Sternberg nvmet_referral_disable(parent, port); 1527a07b4970SChristoph Hellwig 1528a07b4970SChristoph Hellwig return count; 1529a07b4970SChristoph Hellwig inval: 1530a07b4970SChristoph Hellwig pr_err("Invalid value '%s' for enable\n", page); 1531a07b4970SChristoph Hellwig return -EINVAL; 1532a07b4970SChristoph Hellwig } 1533a07b4970SChristoph Hellwig 1534a07b4970SChristoph Hellwig CONFIGFS_ATTR(nvmet_referral_, enable); 1535a07b4970SChristoph Hellwig 1536a07b4970SChristoph Hellwig /* 1537a07b4970SChristoph Hellwig * Discovery Service subsystem definitions 1538a07b4970SChristoph Hellwig */ 1539a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_referral_attrs[] = { 1540a07b4970SChristoph Hellwig &nvmet_attr_addr_adrfam, 1541a07b4970SChristoph Hellwig &nvmet_attr_addr_portid, 1542a07b4970SChristoph Hellwig &nvmet_attr_addr_treq, 1543a07b4970SChristoph Hellwig &nvmet_attr_addr_traddr, 1544a07b4970SChristoph Hellwig &nvmet_attr_addr_trsvcid, 1545a07b4970SChristoph Hellwig &nvmet_attr_addr_trtype, 1546a07b4970SChristoph Hellwig &nvmet_referral_attr_enable, 1547a07b4970SChristoph Hellwig NULL, 1548a07b4970SChristoph Hellwig }; 1549a07b4970SChristoph Hellwig 1550f0e656e4SSagi Grimberg static void nvmet_referral_notify(struct config_group *group, 1551f0e656e4SSagi Grimberg struct config_item *item) 1552a07b4970SChristoph Hellwig { 1553b662a078SJay Sternberg struct nvmet_port *parent = to_nvmet_port(item->ci_parent->ci_parent); 1554a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1555a07b4970SChristoph Hellwig 1556b662a078SJay Sternberg nvmet_referral_disable(parent, port); 1557f0e656e4SSagi Grimberg } 1558f0e656e4SSagi Grimberg 1559f0e656e4SSagi Grimberg static void nvmet_referral_release(struct config_item *item) 1560f0e656e4SSagi Grimberg { 1561f0e656e4SSagi Grimberg struct nvmet_port *port = to_nvmet_port(item); 1562f0e656e4SSagi Grimberg 1563a07b4970SChristoph Hellwig kfree(port); 1564a07b4970SChristoph Hellwig } 1565a07b4970SChristoph Hellwig 1566a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_referral_item_ops = { 1567a07b4970SChristoph Hellwig .release = nvmet_referral_release, 1568a07b4970SChristoph Hellwig }; 1569a07b4970SChristoph Hellwig 157066603a31SBhumika Goyal static const struct config_item_type nvmet_referral_type = { 1571a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1572a07b4970SChristoph Hellwig .ct_attrs = nvmet_referral_attrs, 1573a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_referral_item_ops, 1574a07b4970SChristoph Hellwig }; 1575a07b4970SChristoph Hellwig 1576a07b4970SChristoph Hellwig static struct config_group *nvmet_referral_make( 1577a07b4970SChristoph Hellwig struct config_group *group, const char *name) 1578a07b4970SChristoph Hellwig { 1579a07b4970SChristoph Hellwig struct nvmet_port *port; 1580a07b4970SChristoph Hellwig 1581a07b4970SChristoph Hellwig port = kzalloc(sizeof(*port), GFP_KERNEL); 1582a07b4970SChristoph Hellwig if (!port) 1583f98d9ca1SDan Carpenter return ERR_PTR(-ENOMEM); 1584a07b4970SChristoph Hellwig 1585a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->entry); 1586a07b4970SChristoph Hellwig config_group_init_type_name(&port->group, name, &nvmet_referral_type); 1587a07b4970SChristoph Hellwig 1588a07b4970SChristoph Hellwig return &port->group; 1589a07b4970SChristoph Hellwig } 1590a07b4970SChristoph Hellwig 1591a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_referral_group_ops = { 1592a07b4970SChristoph Hellwig .make_group = nvmet_referral_make, 1593f0e656e4SSagi Grimberg .disconnect_notify = nvmet_referral_notify, 1594a07b4970SChristoph Hellwig }; 1595a07b4970SChristoph Hellwig 159666603a31SBhumika Goyal static const struct config_item_type nvmet_referrals_type = { 1597a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1598a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_referral_group_ops, 1599a07b4970SChristoph Hellwig }; 1600a07b4970SChristoph Hellwig 160174255969SChristoph Hellwig static struct nvmet_type_name_map nvmet_ana_state[] = { 160262ac0d32SChristoph Hellwig { NVME_ANA_OPTIMIZED, "optimized" }, 160362ac0d32SChristoph Hellwig { NVME_ANA_NONOPTIMIZED, "non-optimized" }, 160462ac0d32SChristoph Hellwig { NVME_ANA_INACCESSIBLE, "inaccessible" }, 160562ac0d32SChristoph Hellwig { NVME_ANA_PERSISTENT_LOSS, "persistent-loss" }, 160662ac0d32SChristoph Hellwig { NVME_ANA_CHANGE, "change" }, 160762ac0d32SChristoph Hellwig }; 160862ac0d32SChristoph Hellwig 160962ac0d32SChristoph Hellwig static ssize_t nvmet_ana_group_ana_state_show(struct config_item *item, 161062ac0d32SChristoph Hellwig char *page) 161162ac0d32SChristoph Hellwig { 161262ac0d32SChristoph Hellwig struct nvmet_ana_group *grp = to_ana_group(item); 161362ac0d32SChristoph Hellwig enum nvme_ana_state state = grp->port->ana_state[grp->grpid]; 161462ac0d32SChristoph Hellwig int i; 161562ac0d32SChristoph Hellwig 161684b8d0d7SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) { 161784b8d0d7SChaitanya Kulkarni if (state == nvmet_ana_state[i].type) 161884b8d0d7SChaitanya Kulkarni return sprintf(page, "%s\n", nvmet_ana_state[i].name); 161962ac0d32SChristoph Hellwig } 162062ac0d32SChristoph Hellwig 162162ac0d32SChristoph Hellwig return sprintf(page, "\n"); 162262ac0d32SChristoph Hellwig } 162362ac0d32SChristoph Hellwig 162462ac0d32SChristoph Hellwig static ssize_t nvmet_ana_group_ana_state_store(struct config_item *item, 162562ac0d32SChristoph Hellwig const char *page, size_t count) 162662ac0d32SChristoph Hellwig { 162762ac0d32SChristoph Hellwig struct nvmet_ana_group *grp = to_ana_group(item); 162884b8d0d7SChaitanya Kulkarni enum nvme_ana_state *ana_state = grp->port->ana_state; 162962ac0d32SChristoph Hellwig int i; 163062ac0d32SChristoph Hellwig 163184b8d0d7SChaitanya Kulkarni for (i = 0; i < ARRAY_SIZE(nvmet_ana_state); i++) { 163284b8d0d7SChaitanya Kulkarni if (sysfs_streq(page, nvmet_ana_state[i].name)) 163362ac0d32SChristoph Hellwig goto found; 163462ac0d32SChristoph Hellwig } 163562ac0d32SChristoph Hellwig 163662ac0d32SChristoph Hellwig pr_err("Invalid value '%s' for ana_state\n", page); 163762ac0d32SChristoph Hellwig return -EINVAL; 163862ac0d32SChristoph Hellwig 163962ac0d32SChristoph Hellwig found: 164062ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 164184b8d0d7SChaitanya Kulkarni ana_state[grp->grpid] = (enum nvme_ana_state) nvmet_ana_state[i].type; 164262ac0d32SChristoph Hellwig nvmet_ana_chgcnt++; 164362ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 164462ac0d32SChristoph Hellwig nvmet_port_send_ana_event(grp->port); 164562ac0d32SChristoph Hellwig return count; 164662ac0d32SChristoph Hellwig } 164762ac0d32SChristoph Hellwig 164862ac0d32SChristoph Hellwig CONFIGFS_ATTR(nvmet_ana_group_, ana_state); 164962ac0d32SChristoph Hellwig 165062ac0d32SChristoph Hellwig static struct configfs_attribute *nvmet_ana_group_attrs[] = { 165162ac0d32SChristoph Hellwig &nvmet_ana_group_attr_ana_state, 165262ac0d32SChristoph Hellwig NULL, 165362ac0d32SChristoph Hellwig }; 165462ac0d32SChristoph Hellwig 165562ac0d32SChristoph Hellwig static void nvmet_ana_group_release(struct config_item *item) 165662ac0d32SChristoph Hellwig { 165762ac0d32SChristoph Hellwig struct nvmet_ana_group *grp = to_ana_group(item); 165862ac0d32SChristoph Hellwig 165962ac0d32SChristoph Hellwig if (grp == &grp->port->ana_default_group) 166062ac0d32SChristoph Hellwig return; 166162ac0d32SChristoph Hellwig 166262ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 166362ac0d32SChristoph Hellwig grp->port->ana_state[grp->grpid] = NVME_ANA_INACCESSIBLE; 166462ac0d32SChristoph Hellwig nvmet_ana_group_enabled[grp->grpid]--; 166562ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 166662ac0d32SChristoph Hellwig 166762ac0d32SChristoph Hellwig nvmet_port_send_ana_event(grp->port); 166862ac0d32SChristoph Hellwig kfree(grp); 166962ac0d32SChristoph Hellwig } 167062ac0d32SChristoph Hellwig 167162ac0d32SChristoph Hellwig static struct configfs_item_operations nvmet_ana_group_item_ops = { 167262ac0d32SChristoph Hellwig .release = nvmet_ana_group_release, 167362ac0d32SChristoph Hellwig }; 167462ac0d32SChristoph Hellwig 167562ac0d32SChristoph Hellwig static const struct config_item_type nvmet_ana_group_type = { 167662ac0d32SChristoph Hellwig .ct_item_ops = &nvmet_ana_group_item_ops, 167762ac0d32SChristoph Hellwig .ct_attrs = nvmet_ana_group_attrs, 167862ac0d32SChristoph Hellwig .ct_owner = THIS_MODULE, 167962ac0d32SChristoph Hellwig }; 168062ac0d32SChristoph Hellwig 168162ac0d32SChristoph Hellwig static struct config_group *nvmet_ana_groups_make_group( 168262ac0d32SChristoph Hellwig struct config_group *group, const char *name) 168362ac0d32SChristoph Hellwig { 168462ac0d32SChristoph Hellwig struct nvmet_port *port = ana_groups_to_port(&group->cg_item); 168562ac0d32SChristoph Hellwig struct nvmet_ana_group *grp; 168662ac0d32SChristoph Hellwig u32 grpid; 168762ac0d32SChristoph Hellwig int ret; 168862ac0d32SChristoph Hellwig 168962ac0d32SChristoph Hellwig ret = kstrtou32(name, 0, &grpid); 169062ac0d32SChristoph Hellwig if (ret) 169162ac0d32SChristoph Hellwig goto out; 169262ac0d32SChristoph Hellwig 169362ac0d32SChristoph Hellwig ret = -EINVAL; 169462ac0d32SChristoph Hellwig if (grpid <= 1 || grpid > NVMET_MAX_ANAGRPS) 169562ac0d32SChristoph Hellwig goto out; 169662ac0d32SChristoph Hellwig 169762ac0d32SChristoph Hellwig ret = -ENOMEM; 169862ac0d32SChristoph Hellwig grp = kzalloc(sizeof(*grp), GFP_KERNEL); 169962ac0d32SChristoph Hellwig if (!grp) 170062ac0d32SChristoph Hellwig goto out; 170162ac0d32SChristoph Hellwig grp->port = port; 170262ac0d32SChristoph Hellwig grp->grpid = grpid; 170362ac0d32SChristoph Hellwig 170462ac0d32SChristoph Hellwig down_write(&nvmet_ana_sem); 1705*946fd64bSNitesh Shetty grpid = array_index_nospec(grpid, NVMET_MAX_ANAGRPS); 170662ac0d32SChristoph Hellwig nvmet_ana_group_enabled[grpid]++; 170762ac0d32SChristoph Hellwig up_write(&nvmet_ana_sem); 170862ac0d32SChristoph Hellwig 170962ac0d32SChristoph Hellwig nvmet_port_send_ana_event(grp->port); 171062ac0d32SChristoph Hellwig 171162ac0d32SChristoph Hellwig config_group_init_type_name(&grp->group, name, &nvmet_ana_group_type); 171262ac0d32SChristoph Hellwig return &grp->group; 171362ac0d32SChristoph Hellwig out: 171462ac0d32SChristoph Hellwig return ERR_PTR(ret); 171562ac0d32SChristoph Hellwig } 171662ac0d32SChristoph Hellwig 171762ac0d32SChristoph Hellwig static struct configfs_group_operations nvmet_ana_groups_group_ops = { 171862ac0d32SChristoph Hellwig .make_group = nvmet_ana_groups_make_group, 171962ac0d32SChristoph Hellwig }; 172062ac0d32SChristoph Hellwig 172162ac0d32SChristoph Hellwig static const struct config_item_type nvmet_ana_groups_type = { 172262ac0d32SChristoph Hellwig .ct_group_ops = &nvmet_ana_groups_group_ops, 172362ac0d32SChristoph Hellwig .ct_owner = THIS_MODULE, 172462ac0d32SChristoph Hellwig }; 172562ac0d32SChristoph Hellwig 1726a07b4970SChristoph Hellwig /* 1727a07b4970SChristoph Hellwig * Ports definitions. 1728a07b4970SChristoph Hellwig */ 1729a07b4970SChristoph Hellwig static void nvmet_port_release(struct config_item *item) 1730a07b4970SChristoph Hellwig { 1731a07b4970SChristoph Hellwig struct nvmet_port *port = to_nvmet_port(item); 1732a07b4970SChristoph Hellwig 1733e3e19dccSIsrael Rukshin /* Let inflight controllers teardown complete */ 17348832cf92SSagi Grimberg flush_workqueue(nvmet_wq); 1735b662a078SJay Sternberg list_del(&port->global_entry); 1736b662a078SJay Sternberg 173772efd25dSChristoph Hellwig kfree(port->ana_state); 1738a07b4970SChristoph Hellwig kfree(port); 1739a07b4970SChristoph Hellwig } 1740a07b4970SChristoph Hellwig 1741a07b4970SChristoph Hellwig static struct configfs_attribute *nvmet_port_attrs[] = { 1742a07b4970SChristoph Hellwig &nvmet_attr_addr_adrfam, 1743a07b4970SChristoph Hellwig &nvmet_attr_addr_treq, 1744a07b4970SChristoph Hellwig &nvmet_attr_addr_traddr, 1745a07b4970SChristoph Hellwig &nvmet_attr_addr_trsvcid, 1746a07b4970SChristoph Hellwig &nvmet_attr_addr_trtype, 17470d5ee2b2SSteve Wise &nvmet_attr_param_inline_data_size, 1748ea52ac1cSIsrael Rukshin #ifdef CONFIG_BLK_DEV_INTEGRITY 1749ea52ac1cSIsrael Rukshin &nvmet_attr_param_pi_enable, 1750ea52ac1cSIsrael Rukshin #endif 1751a07b4970SChristoph Hellwig NULL, 1752a07b4970SChristoph Hellwig }; 1753a07b4970SChristoph Hellwig 1754a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_port_item_ops = { 1755a07b4970SChristoph Hellwig .release = nvmet_port_release, 1756a07b4970SChristoph Hellwig }; 1757a07b4970SChristoph Hellwig 175866603a31SBhumika Goyal static const struct config_item_type nvmet_port_type = { 1759a07b4970SChristoph Hellwig .ct_attrs = nvmet_port_attrs, 1760a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_port_item_ops, 1761a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1762a07b4970SChristoph Hellwig }; 1763a07b4970SChristoph Hellwig 1764a07b4970SChristoph Hellwig static struct config_group *nvmet_ports_make(struct config_group *group, 1765a07b4970SChristoph Hellwig const char *name) 1766a07b4970SChristoph Hellwig { 1767a07b4970SChristoph Hellwig struct nvmet_port *port; 1768a07b4970SChristoph Hellwig u16 portid; 176962ac0d32SChristoph Hellwig u32 i; 1770a07b4970SChristoph Hellwig 1771a07b4970SChristoph Hellwig if (kstrtou16(name, 0, &portid)) 1772a07b4970SChristoph Hellwig return ERR_PTR(-EINVAL); 1773a07b4970SChristoph Hellwig 1774a07b4970SChristoph Hellwig port = kzalloc(sizeof(*port), GFP_KERNEL); 1775a07b4970SChristoph Hellwig if (!port) 1776f98d9ca1SDan Carpenter return ERR_PTR(-ENOMEM); 1777a07b4970SChristoph Hellwig 177872efd25dSChristoph Hellwig port->ana_state = kcalloc(NVMET_MAX_ANAGRPS + 1, 177972efd25dSChristoph Hellwig sizeof(*port->ana_state), GFP_KERNEL); 178072efd25dSChristoph Hellwig if (!port->ana_state) { 178172efd25dSChristoph Hellwig kfree(port); 178272efd25dSChristoph Hellwig return ERR_PTR(-ENOMEM); 178372efd25dSChristoph Hellwig } 178472efd25dSChristoph Hellwig 178562ac0d32SChristoph Hellwig for (i = 1; i <= NVMET_MAX_ANAGRPS; i++) { 178662ac0d32SChristoph Hellwig if (i == NVMET_DEFAULT_ANA_GRPID) 178762ac0d32SChristoph Hellwig port->ana_state[1] = NVME_ANA_OPTIMIZED; 178862ac0d32SChristoph Hellwig else 178962ac0d32SChristoph Hellwig port->ana_state[i] = NVME_ANA_INACCESSIBLE; 179062ac0d32SChristoph Hellwig } 179172efd25dSChristoph Hellwig 1792b662a078SJay Sternberg list_add(&port->global_entry, &nvmet_ports_list); 1793b662a078SJay Sternberg 1794a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->entry); 1795a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->subsystems); 1796a07b4970SChristoph Hellwig INIT_LIST_HEAD(&port->referrals); 17970d5ee2b2SSteve Wise port->inline_data_size = -1; /* < 0 == let the transport choose */ 1798a07b4970SChristoph Hellwig 1799a07b4970SChristoph Hellwig port->disc_addr.portid = cpu_to_le16(portid); 1800d02abd19SChaitanya Kulkarni port->disc_addr.adrfam = NVMF_ADDR_FAMILY_MAX; 18019b95d2fbSSagi Grimberg port->disc_addr.treq = NVMF_TREQ_DISABLE_SQFLOW; 1802a07b4970SChristoph Hellwig config_group_init_type_name(&port->group, name, &nvmet_port_type); 1803a07b4970SChristoph Hellwig 1804a07b4970SChristoph Hellwig config_group_init_type_name(&port->subsys_group, 1805a07b4970SChristoph Hellwig "subsystems", &nvmet_port_subsys_type); 1806a07b4970SChristoph Hellwig configfs_add_default_group(&port->subsys_group, &port->group); 1807a07b4970SChristoph Hellwig 1808a07b4970SChristoph Hellwig config_group_init_type_name(&port->referrals_group, 1809a07b4970SChristoph Hellwig "referrals", &nvmet_referrals_type); 1810a07b4970SChristoph Hellwig configfs_add_default_group(&port->referrals_group, &port->group); 1811a07b4970SChristoph Hellwig 181262ac0d32SChristoph Hellwig config_group_init_type_name(&port->ana_groups_group, 181362ac0d32SChristoph Hellwig "ana_groups", &nvmet_ana_groups_type); 181462ac0d32SChristoph Hellwig configfs_add_default_group(&port->ana_groups_group, &port->group); 181562ac0d32SChristoph Hellwig 181662ac0d32SChristoph Hellwig port->ana_default_group.port = port; 181762ac0d32SChristoph Hellwig port->ana_default_group.grpid = NVMET_DEFAULT_ANA_GRPID; 181862ac0d32SChristoph Hellwig config_group_init_type_name(&port->ana_default_group.group, 181962ac0d32SChristoph Hellwig __stringify(NVMET_DEFAULT_ANA_GRPID), 182062ac0d32SChristoph Hellwig &nvmet_ana_group_type); 182162ac0d32SChristoph Hellwig configfs_add_default_group(&port->ana_default_group.group, 182262ac0d32SChristoph Hellwig &port->ana_groups_group); 182362ac0d32SChristoph Hellwig 1824a07b4970SChristoph Hellwig return &port->group; 1825a07b4970SChristoph Hellwig } 1826a07b4970SChristoph Hellwig 1827a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_ports_group_ops = { 1828a07b4970SChristoph Hellwig .make_group = nvmet_ports_make, 1829a07b4970SChristoph Hellwig }; 1830a07b4970SChristoph Hellwig 183166603a31SBhumika Goyal static const struct config_item_type nvmet_ports_type = { 1832a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_ports_group_ops, 1833a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1834a07b4970SChristoph Hellwig }; 1835a07b4970SChristoph Hellwig 1836a07b4970SChristoph Hellwig static struct config_group nvmet_subsystems_group; 1837a07b4970SChristoph Hellwig static struct config_group nvmet_ports_group; 1838a07b4970SChristoph Hellwig 1839db1312ddSHannes Reinecke #ifdef CONFIG_NVME_TARGET_AUTH 1840db1312ddSHannes Reinecke static ssize_t nvmet_host_dhchap_key_show(struct config_item *item, 1841db1312ddSHannes Reinecke char *page) 1842db1312ddSHannes Reinecke { 1843db1312ddSHannes Reinecke u8 *dhchap_secret = to_host(item)->dhchap_secret; 1844db1312ddSHannes Reinecke 1845db1312ddSHannes Reinecke if (!dhchap_secret) 1846db1312ddSHannes Reinecke return sprintf(page, "\n"); 1847db1312ddSHannes Reinecke return sprintf(page, "%s\n", dhchap_secret); 1848db1312ddSHannes Reinecke } 1849db1312ddSHannes Reinecke 1850db1312ddSHannes Reinecke static ssize_t nvmet_host_dhchap_key_store(struct config_item *item, 1851db1312ddSHannes Reinecke const char *page, size_t count) 1852db1312ddSHannes Reinecke { 1853db1312ddSHannes Reinecke struct nvmet_host *host = to_host(item); 1854db1312ddSHannes Reinecke int ret; 1855db1312ddSHannes Reinecke 1856db1312ddSHannes Reinecke ret = nvmet_auth_set_key(host, page, false); 1857db1312ddSHannes Reinecke /* 1858db1312ddSHannes Reinecke * Re-authentication is a soft state, so keep the 1859db1312ddSHannes Reinecke * current authentication valid until the host 1860db1312ddSHannes Reinecke * requests re-authentication. 1861db1312ddSHannes Reinecke */ 1862db1312ddSHannes Reinecke return ret < 0 ? ret : count; 1863db1312ddSHannes Reinecke } 1864db1312ddSHannes Reinecke 1865db1312ddSHannes Reinecke CONFIGFS_ATTR(nvmet_host_, dhchap_key); 1866db1312ddSHannes Reinecke 1867db1312ddSHannes Reinecke static ssize_t nvmet_host_dhchap_ctrl_key_show(struct config_item *item, 1868db1312ddSHannes Reinecke char *page) 1869db1312ddSHannes Reinecke { 1870db1312ddSHannes Reinecke u8 *dhchap_secret = to_host(item)->dhchap_ctrl_secret; 1871db1312ddSHannes Reinecke 1872db1312ddSHannes Reinecke if (!dhchap_secret) 1873db1312ddSHannes Reinecke return sprintf(page, "\n"); 1874db1312ddSHannes Reinecke return sprintf(page, "%s\n", dhchap_secret); 1875db1312ddSHannes Reinecke } 1876db1312ddSHannes Reinecke 1877db1312ddSHannes Reinecke static ssize_t nvmet_host_dhchap_ctrl_key_store(struct config_item *item, 1878db1312ddSHannes Reinecke const char *page, size_t count) 1879db1312ddSHannes Reinecke { 1880db1312ddSHannes Reinecke struct nvmet_host *host = to_host(item); 1881db1312ddSHannes Reinecke int ret; 1882db1312ddSHannes Reinecke 1883db1312ddSHannes Reinecke ret = nvmet_auth_set_key(host, page, true); 1884db1312ddSHannes Reinecke /* 1885db1312ddSHannes Reinecke * Re-authentication is a soft state, so keep the 1886db1312ddSHannes Reinecke * current authentication valid until the host 1887db1312ddSHannes Reinecke * requests re-authentication. 1888db1312ddSHannes Reinecke */ 1889db1312ddSHannes Reinecke return ret < 0 ? ret : count; 1890db1312ddSHannes Reinecke } 1891db1312ddSHannes Reinecke 1892db1312ddSHannes Reinecke CONFIGFS_ATTR(nvmet_host_, dhchap_ctrl_key); 1893db1312ddSHannes Reinecke 1894db1312ddSHannes Reinecke static ssize_t nvmet_host_dhchap_hash_show(struct config_item *item, 1895db1312ddSHannes Reinecke char *page) 1896db1312ddSHannes Reinecke { 1897db1312ddSHannes Reinecke struct nvmet_host *host = to_host(item); 1898db1312ddSHannes Reinecke const char *hash_name = nvme_auth_hmac_name(host->dhchap_hash_id); 1899db1312ddSHannes Reinecke 1900db1312ddSHannes Reinecke return sprintf(page, "%s\n", hash_name ? hash_name : "none"); 1901db1312ddSHannes Reinecke } 1902db1312ddSHannes Reinecke 1903db1312ddSHannes Reinecke static ssize_t nvmet_host_dhchap_hash_store(struct config_item *item, 1904db1312ddSHannes Reinecke const char *page, size_t count) 1905db1312ddSHannes Reinecke { 1906db1312ddSHannes Reinecke struct nvmet_host *host = to_host(item); 1907db1312ddSHannes Reinecke u8 hmac_id; 1908db1312ddSHannes Reinecke 1909db1312ddSHannes Reinecke hmac_id = nvme_auth_hmac_id(page); 1910db1312ddSHannes Reinecke if (hmac_id == NVME_AUTH_HASH_INVALID) 1911db1312ddSHannes Reinecke return -EINVAL; 1912db1312ddSHannes Reinecke if (!crypto_has_shash(nvme_auth_hmac_name(hmac_id), 0, 0)) 1913db1312ddSHannes Reinecke return -ENOTSUPP; 1914db1312ddSHannes Reinecke host->dhchap_hash_id = hmac_id; 1915db1312ddSHannes Reinecke return count; 1916db1312ddSHannes Reinecke } 1917db1312ddSHannes Reinecke 1918db1312ddSHannes Reinecke CONFIGFS_ATTR(nvmet_host_, dhchap_hash); 1919db1312ddSHannes Reinecke 19207a277c37SHannes Reinecke static ssize_t nvmet_host_dhchap_dhgroup_show(struct config_item *item, 19217a277c37SHannes Reinecke char *page) 19227a277c37SHannes Reinecke { 19237a277c37SHannes Reinecke struct nvmet_host *host = to_host(item); 19247a277c37SHannes Reinecke const char *dhgroup = nvme_auth_dhgroup_name(host->dhchap_dhgroup_id); 19257a277c37SHannes Reinecke 19267a277c37SHannes Reinecke return sprintf(page, "%s\n", dhgroup ? dhgroup : "none"); 19277a277c37SHannes Reinecke } 19287a277c37SHannes Reinecke 19297a277c37SHannes Reinecke static ssize_t nvmet_host_dhchap_dhgroup_store(struct config_item *item, 19307a277c37SHannes Reinecke const char *page, size_t count) 19317a277c37SHannes Reinecke { 19327a277c37SHannes Reinecke struct nvmet_host *host = to_host(item); 19337a277c37SHannes Reinecke int dhgroup_id; 19347a277c37SHannes Reinecke 19357a277c37SHannes Reinecke dhgroup_id = nvme_auth_dhgroup_id(page); 19367a277c37SHannes Reinecke if (dhgroup_id == NVME_AUTH_DHGROUP_INVALID) 19377a277c37SHannes Reinecke return -EINVAL; 19387a277c37SHannes Reinecke if (dhgroup_id != NVME_AUTH_DHGROUP_NULL) { 19397a277c37SHannes Reinecke const char *kpp = nvme_auth_dhgroup_kpp(dhgroup_id); 19407a277c37SHannes Reinecke 19417a277c37SHannes Reinecke if (!crypto_has_kpp(kpp, 0, 0)) 19427a277c37SHannes Reinecke return -EINVAL; 19437a277c37SHannes Reinecke } 19447a277c37SHannes Reinecke host->dhchap_dhgroup_id = dhgroup_id; 19457a277c37SHannes Reinecke return count; 19467a277c37SHannes Reinecke } 19477a277c37SHannes Reinecke 19487a277c37SHannes Reinecke CONFIGFS_ATTR(nvmet_host_, dhchap_dhgroup); 19497a277c37SHannes Reinecke 1950db1312ddSHannes Reinecke static struct configfs_attribute *nvmet_host_attrs[] = { 1951db1312ddSHannes Reinecke &nvmet_host_attr_dhchap_key, 1952db1312ddSHannes Reinecke &nvmet_host_attr_dhchap_ctrl_key, 1953db1312ddSHannes Reinecke &nvmet_host_attr_dhchap_hash, 19547a277c37SHannes Reinecke &nvmet_host_attr_dhchap_dhgroup, 1955db1312ddSHannes Reinecke NULL, 1956db1312ddSHannes Reinecke }; 1957db1312ddSHannes Reinecke #endif /* CONFIG_NVME_TARGET_AUTH */ 1958db1312ddSHannes Reinecke 1959a07b4970SChristoph Hellwig static void nvmet_host_release(struct config_item *item) 1960a07b4970SChristoph Hellwig { 1961a07b4970SChristoph Hellwig struct nvmet_host *host = to_host(item); 1962ee8cd008SChristoph Hellwig 1963db1312ddSHannes Reinecke #ifdef CONFIG_NVME_TARGET_AUTH 1964db1312ddSHannes Reinecke kfree(host->dhchap_secret); 1965e65fdf53SSagi Grimberg kfree(host->dhchap_ctrl_secret); 1966db1312ddSHannes Reinecke #endif 1967a07b4970SChristoph Hellwig kfree(host); 1968a07b4970SChristoph Hellwig } 1969a07b4970SChristoph Hellwig 1970a07b4970SChristoph Hellwig static struct configfs_item_operations nvmet_host_item_ops = { 1971a07b4970SChristoph Hellwig .release = nvmet_host_release, 1972a07b4970SChristoph Hellwig }; 1973a07b4970SChristoph Hellwig 197466603a31SBhumika Goyal static const struct config_item_type nvmet_host_type = { 1975a07b4970SChristoph Hellwig .ct_item_ops = &nvmet_host_item_ops, 1976db1312ddSHannes Reinecke #ifdef CONFIG_NVME_TARGET_AUTH 1977db1312ddSHannes Reinecke .ct_attrs = nvmet_host_attrs, 1978db1312ddSHannes Reinecke #endif 1979a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 1980a07b4970SChristoph Hellwig }; 1981a07b4970SChristoph Hellwig 1982a07b4970SChristoph Hellwig static struct config_group *nvmet_hosts_make_group(struct config_group *group, 1983a07b4970SChristoph Hellwig const char *name) 1984a07b4970SChristoph Hellwig { 1985a07b4970SChristoph Hellwig struct nvmet_host *host; 1986a07b4970SChristoph Hellwig 1987a07b4970SChristoph Hellwig host = kzalloc(sizeof(*host), GFP_KERNEL); 1988a07b4970SChristoph Hellwig if (!host) 1989a07b4970SChristoph Hellwig return ERR_PTR(-ENOMEM); 1990a07b4970SChristoph Hellwig 1991db1312ddSHannes Reinecke #ifdef CONFIG_NVME_TARGET_AUTH 1992db1312ddSHannes Reinecke /* Default to SHA256 */ 1993db1312ddSHannes Reinecke host->dhchap_hash_id = NVME_AUTH_HASH_SHA256; 1994db1312ddSHannes Reinecke #endif 1995db1312ddSHannes Reinecke 1996a07b4970SChristoph Hellwig config_group_init_type_name(&host->group, name, &nvmet_host_type); 1997a07b4970SChristoph Hellwig 1998a07b4970SChristoph Hellwig return &host->group; 1999a07b4970SChristoph Hellwig } 2000a07b4970SChristoph Hellwig 2001a07b4970SChristoph Hellwig static struct configfs_group_operations nvmet_hosts_group_ops = { 2002a07b4970SChristoph Hellwig .make_group = nvmet_hosts_make_group, 2003a07b4970SChristoph Hellwig }; 2004a07b4970SChristoph Hellwig 200566603a31SBhumika Goyal static const struct config_item_type nvmet_hosts_type = { 2006a07b4970SChristoph Hellwig .ct_group_ops = &nvmet_hosts_group_ops, 2007a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 2008a07b4970SChristoph Hellwig }; 2009a07b4970SChristoph Hellwig 2010a07b4970SChristoph Hellwig static struct config_group nvmet_hosts_group; 2011a07b4970SChristoph Hellwig 201266603a31SBhumika Goyal static const struct config_item_type nvmet_root_type = { 2013a07b4970SChristoph Hellwig .ct_owner = THIS_MODULE, 2014a07b4970SChristoph Hellwig }; 2015a07b4970SChristoph Hellwig 2016a07b4970SChristoph Hellwig static struct configfs_subsystem nvmet_configfs_subsystem = { 2017a07b4970SChristoph Hellwig .su_group = { 2018a07b4970SChristoph Hellwig .cg_item = { 2019a07b4970SChristoph Hellwig .ci_namebuf = "nvmet", 2020a07b4970SChristoph Hellwig .ci_type = &nvmet_root_type, 2021a07b4970SChristoph Hellwig }, 2022a07b4970SChristoph Hellwig }, 2023a07b4970SChristoph Hellwig }; 2024a07b4970SChristoph Hellwig 2025a07b4970SChristoph Hellwig int __init nvmet_init_configfs(void) 2026a07b4970SChristoph Hellwig { 2027a07b4970SChristoph Hellwig int ret; 2028a07b4970SChristoph Hellwig 2029a07b4970SChristoph Hellwig config_group_init(&nvmet_configfs_subsystem.su_group); 2030a07b4970SChristoph Hellwig mutex_init(&nvmet_configfs_subsystem.su_mutex); 2031a07b4970SChristoph Hellwig 2032a07b4970SChristoph Hellwig config_group_init_type_name(&nvmet_subsystems_group, 2033a07b4970SChristoph Hellwig "subsystems", &nvmet_subsystems_type); 2034a07b4970SChristoph Hellwig configfs_add_default_group(&nvmet_subsystems_group, 2035a07b4970SChristoph Hellwig &nvmet_configfs_subsystem.su_group); 2036a07b4970SChristoph Hellwig 2037a07b4970SChristoph Hellwig config_group_init_type_name(&nvmet_ports_group, 2038a07b4970SChristoph Hellwig "ports", &nvmet_ports_type); 2039a07b4970SChristoph Hellwig configfs_add_default_group(&nvmet_ports_group, 2040a07b4970SChristoph Hellwig &nvmet_configfs_subsystem.su_group); 2041a07b4970SChristoph Hellwig 2042a07b4970SChristoph Hellwig config_group_init_type_name(&nvmet_hosts_group, 2043a07b4970SChristoph Hellwig "hosts", &nvmet_hosts_type); 2044a07b4970SChristoph Hellwig configfs_add_default_group(&nvmet_hosts_group, 2045a07b4970SChristoph Hellwig &nvmet_configfs_subsystem.su_group); 2046a07b4970SChristoph Hellwig 2047a07b4970SChristoph Hellwig ret = configfs_register_subsystem(&nvmet_configfs_subsystem); 2048a07b4970SChristoph Hellwig if (ret) { 2049a07b4970SChristoph Hellwig pr_err("configfs_register_subsystem: %d\n", ret); 2050a07b4970SChristoph Hellwig return ret; 2051a07b4970SChristoph Hellwig } 2052a07b4970SChristoph Hellwig 2053a07b4970SChristoph Hellwig return 0; 2054a07b4970SChristoph Hellwig } 2055a07b4970SChristoph Hellwig 2056a07b4970SChristoph Hellwig void __exit nvmet_exit_configfs(void) 2057a07b4970SChristoph Hellwig { 2058a07b4970SChristoph Hellwig configfs_unregister_subsystem(&nvmet_configfs_subsystem); 2059a07b4970SChristoph Hellwig } 2060