1# SPDX-License-Identifier: GPL-2.0-only 2config NVME_CORE 3 tristate 4 5config BLK_DEV_NVME 6 tristate "NVM Express block device" 7 depends on PCI && BLOCK 8 select NVME_CORE 9 help 10 The NVM Express driver is for solid state drives directly 11 connected to the PCI or PCI Express bus. If you know you 12 don't have one of these, it is safe to answer N. 13 14 To compile this driver as a module, choose M here: the 15 module will be called nvme. 16 17config NVME_MULTIPATH 18 bool "NVMe multipath support" 19 depends on NVME_CORE 20 help 21 This option enables support for multipath access to NVMe 22 subsystems. If this option is enabled only a single 23 /dev/nvmeXnY device will show up for each NVMe namespace, 24 even if it is accessible through multiple controllers. 25 26config NVME_VERBOSE_ERRORS 27 bool "NVMe verbose error reporting" 28 depends on NVME_CORE 29 help 30 This option enables verbose reporting for NVMe errors. The 31 error translation table will grow the kernel image size by 32 about 4 KB. 33 34config NVME_HWMON 35 bool "NVMe hardware monitoring" 36 depends on (NVME_CORE=y && HWMON=y) || (NVME_CORE=m && HWMON) 37 help 38 This provides support for NVMe hardware monitoring. If enabled, 39 a hardware monitoring device will be created for each NVMe drive 40 in the system. 41 42config NVME_FABRICS 43 select NVME_CORE 44 select NVME_KEYRING if NVME_TCP_TLS 45 tristate 46 47config NVME_RDMA 48 tristate "NVM Express over Fabrics RDMA host driver" 49 depends on INFINIBAND && INFINIBAND_ADDR_TRANS && BLOCK 50 select NVME_FABRICS 51 select SG_POOL 52 help 53 This provides support for the NVMe over Fabrics protocol using 54 the RDMA (Infiniband, RoCE, iWarp) transport. This allows you 55 to use remote block devices exported using the NVMe protocol set. 56 57 To configure a NVMe over Fabrics controller use the nvme-cli tool 58 from https://github.com/linux-nvme/nvme-cli. 59 60 If unsure, say N. 61 62config NVME_FC 63 tristate "NVM Express over Fabrics FC host driver" 64 depends on BLOCK 65 depends on HAS_DMA 66 select NVME_FABRICS 67 select SG_POOL 68 help 69 This provides support for the NVMe over Fabrics protocol using 70 the FC transport. This allows you to use remote block devices 71 exported using the NVMe protocol set. 72 73 To configure a NVMe over Fabrics controller use the nvme-cli tool 74 from https://github.com/linux-nvme/nvme-cli. 75 76 If unsure, say N. 77 78config NVME_TCP 79 tristate "NVM Express over Fabrics TCP host driver" 80 depends on INET 81 depends on BLOCK 82 select NVME_FABRICS 83 select CRYPTO 84 select CRYPTO_CRC32C 85 help 86 This provides support for the NVMe over Fabrics protocol using 87 the TCP transport. This allows you to use remote block devices 88 exported using the NVMe protocol set. 89 90 To configure a NVMe over Fabrics controller use the nvme-cli tool 91 from https://github.com/linux-nvme/nvme-cli. 92 93 If unsure, say N. 94 95config NVME_TCP_TLS 96 bool "NVMe over Fabrics TCP TLS encryption support" 97 depends on NVME_TCP 98 select NET_HANDSHAKE 99 select KEYS 100 help 101 Enables TLS encryption for NVMe TCP using the netlink handshake API. 102 103 The TLS handshake daemon is availble at 104 https://github.com/oracle/ktls-utils. 105 106 If unsure, say N. 107 108config NVME_HOST_AUTH 109 bool "NVMe over Fabrics In-Band Authentication in host side" 110 depends on NVME_CORE 111 select NVME_AUTH 112 select NVME_KEYRING if NVME_TCP_TLS 113 help 114 This provides support for NVMe over Fabrics In-Band Authentication in 115 host side. 116 117 If unsure, say N. 118 119config NVME_APPLE 120 tristate "Apple ANS2 NVM Express host driver" 121 depends on OF && BLOCK 122 depends on APPLE_RTKIT && APPLE_SART 123 depends on ARCH_APPLE || COMPILE_TEST 124 select NVME_CORE 125 help 126 This provides support for the NVMe controller embedded in Apple SoCs 127 such as the M1. 128 129 To compile this driver as a module, choose M here: the 130 module will be called nvme-apple. 131