Kconfig 21 KB

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  1. # SPDX-License-Identifier: GPL-2.0-only
  2. #
  3. # Network device configuration
  4. #
  5. menuconfig NETDEVICES
  6. default y if UML
  7. depends on NET
  8. bool "Network device support"
  9. help
  10. You can say N here if you don't intend to connect your Linux box to
  11. any other computer at all.
  12. You'll have to say Y if your computer contains a network card that
  13. you want to use under Linux. If you are going to run SLIP or PPP over
  14. telephone line or null modem cable you need say Y here. Connecting
  15. two machines with parallel ports using PLIP needs this, as well as
  16. AX.25/KISS for sending Internet traffic over amateur radio links.
  17. See also "The Linux Network Administrator's Guide" by Olaf Kirch and
  18. Terry Dawson. Available at <http://www.tldp.org/guides.html>.
  19. If unsure, say Y.
  20. # All the following symbols are dependent on NETDEVICES - do not repeat
  21. # that for each of the symbols.
  22. if NETDEVICES
  23. config MII
  24. tristate
  25. config NET_CORE
  26. default y
  27. bool "Network core driver support"
  28. help
  29. You can say N here if you do not intend to use any of the
  30. networking core drivers (i.e. VLAN, bridging, bonding, etc.)
  31. if NET_CORE
  32. config BONDING
  33. tristate "Bonding driver support"
  34. depends on INET
  35. depends on IPV6 || IPV6=n
  36. depends on TLS || TLS_DEVICE=n
  37. help
  38. Say 'Y' or 'M' if you wish to be able to 'bond' multiple Ethernet
  39. Channels together. This is called 'Etherchannel' by Cisco,
  40. 'Trunking' by Sun, 802.3ad by the IEEE, and 'Bonding' in Linux.
  41. The driver supports multiple bonding modes to allow for both high
  42. performance and high availability operation.
  43. Refer to <file:Documentation/networking/bonding.rst> for more
  44. information.
  45. To compile this driver as a module, choose M here: the module
  46. will be called bonding.
  47. config DUMMY
  48. tristate "Dummy net driver support"
  49. help
  50. This is essentially a bit-bucket device (i.e. traffic you send to
  51. this device is consigned into oblivion) with a configurable IP
  52. address. It is most commonly used in order to make your currently
  53. inactive SLIP address seem like a real address for local programs.
  54. If you use SLIP or PPP, you might want to say Y here. It won't
  55. enlarge your kernel. What a deal. Read about it in the Network
  56. Administrator's Guide, available from
  57. <http://www.tldp.org/docs.html#guide>.
  58. To compile this driver as a module, choose M here: the module
  59. will be called dummy.
  60. config WIREGUARD
  61. tristate "WireGuard secure network tunnel"
  62. depends on NET && INET
  63. depends on IPV6 || !IPV6
  64. select NET_UDP_TUNNEL
  65. select DST_CACHE
  66. select CRYPTO_LIB_CURVE25519
  67. select CRYPTO_LIB_CHACHA20POLY1305
  68. select CRYPTO_LIB_UTILS
  69. help
  70. WireGuard is a secure, fast, and easy to use replacement for IPSec
  71. that uses modern cryptography and clever networking tricks. It's
  72. designed to be fairly general purpose and abstract enough to fit most
  73. use cases, while at the same time remaining extremely simple to
  74. configure. See www.wireguard.com for more info.
  75. It's safe to say Y or M here, as the driver is very lightweight and
  76. is only in use when an administrator chooses to add an interface.
  77. config WIREGUARD_DEBUG
  78. bool "Debugging checks and verbose messages"
  79. depends on WIREGUARD
  80. help
  81. This will write log messages for handshake and other events
  82. that occur for a WireGuard interface. It will also perform some
  83. extra validation checks and unit tests at various points. This is
  84. only useful for debugging.
  85. Say N here unless you know what you're doing.
  86. config OVPN
  87. tristate "OpenVPN data channel offload"
  88. depends on NET && INET
  89. depends on IPV6 || !IPV6
  90. select DST_CACHE
  91. select NET_UDP_TUNNEL
  92. select CRYPTO
  93. select CRYPTO_AES
  94. select CRYPTO_GCM
  95. select CRYPTO_CHACHA20POLY1305
  96. select STREAM_PARSER
  97. help
  98. This module enhances the performance of the OpenVPN userspace software
  99. by offloading the data channel processing to kernelspace.
  100. config EQUALIZER
  101. tristate "EQL (serial line load balancing) support"
  102. help
  103. If you have two serial connections to some other computer (this
  104. usually requires two modems and two telephone lines) and you use
  105. SLIP (the protocol for sending Internet traffic over telephone
  106. lines) or PPP (a better SLIP) on them, you can make them behave like
  107. one double speed connection using this driver. Naturally, this has
  108. to be supported at the other end as well, either with a similar EQL
  109. Linux driver or with a Livingston Portmaster 2e.
  110. Say Y if you want this and read
  111. <file:Documentation/networking/eql.rst>. You may also want to read
  112. section 6.2 of the NET-3-HOWTO, available from
  113. <http://www.tldp.org/docs.html#howto>.
  114. To compile this driver as a module, choose M here: the module
  115. will be called eql. If unsure, say N.
  116. config NET_FC
  117. bool "Fibre Channel driver support"
  118. depends on SCSI && PCI
  119. help
  120. Fibre Channel is a high speed serial protocol mainly used to connect
  121. large storage devices to the computer; it is compatible with and
  122. intended to replace SCSI.
  123. If you intend to use Fibre Channel, you need to have a Fibre channel
  124. adaptor card in your computer; say Y here and to the driver for your
  125. adaptor below. You also should have said Y to "SCSI support" and
  126. "SCSI generic support".
  127. config IFB
  128. tristate "Intermediate Functional Block support"
  129. depends on NET_ACT_MIRRED || NFT_FWD_NETDEV
  130. select NET_REDIRECT
  131. help
  132. This is an intermediate driver that allows sharing of
  133. resources.
  134. To compile this driver as a module, choose M here: the module
  135. will be called ifb. If you want to use more than one ifb
  136. device at a time, you need to compile this driver as a module.
  137. Instead of 'ifb', the devices will then be called 'ifb0',
  138. 'ifb1' etc.
  139. Look at the iproute2 documentation directory for usage etc
  140. source "drivers/net/team/Kconfig"
  141. config MACVLAN
  142. tristate "MAC-VLAN support"
  143. help
  144. This allows one to create virtual interfaces that map packets to
  145. or from specific MAC addresses to a particular interface.
  146. Macvlan devices can be added using the "ip" command from the
  147. iproute2 package starting with the iproute2-2.6.23 release:
  148. "ip link add link <real dev> [ address MAC ] [ NAME ] type macvlan"
  149. To compile this driver as a module, choose M here: the module
  150. will be called macvlan.
  151. config MACVTAP
  152. tristate "MAC-VLAN based tap driver"
  153. depends on MACVLAN
  154. depends on INET
  155. select TAP
  156. help
  157. This adds a specialized tap character device driver that is based
  158. on the MAC-VLAN network interface, called macvtap. A macvtap device
  159. can be added in the same way as a macvlan device, using 'type
  160. macvtap', and then be accessed through the tap user space interface.
  161. To compile this driver as a module, choose M here: the module
  162. will be called macvtap.
  163. config IPVLAN_L3S
  164. depends on NETFILTER
  165. depends on IPVLAN
  166. def_bool y
  167. select NET_L3_MASTER_DEV
  168. config IPVLAN
  169. tristate "IP-VLAN support"
  170. depends on INET
  171. depends on IPV6 || !IPV6
  172. help
  173. This allows one to create virtual devices off of a main interface
  174. and packets will be delivered based on the dest L3 (IPv6/IPv4 addr)
  175. on packets. All interfaces (including the main interface) share L2
  176. making it transparent to the connected L2 switch.
  177. Ipvlan devices can be added using the "ip" command from the
  178. iproute2 package starting with the iproute2-3.19 release:
  179. "ip link add link <main-dev> [ NAME ] type ipvlan"
  180. To compile this driver as a module, choose M here: the module
  181. will be called ipvlan.
  182. config IPVTAP
  183. tristate "IP-VLAN based tap driver"
  184. depends on IPVLAN
  185. depends on INET
  186. select TAP
  187. help
  188. This adds a specialized tap character device driver that is based
  189. on the IP-VLAN network interface, called ipvtap. An ipvtap device
  190. can be added in the same way as a ipvlan device, using 'type
  191. ipvtap', and then be accessed through the tap user space interface.
  192. To compile this driver as a module, choose M here: the module
  193. will be called ipvtap.
  194. config VXLAN
  195. tristate "Virtual eXtensible Local Area Network (VXLAN)"
  196. depends on INET
  197. select NET_UDP_TUNNEL
  198. select GRO_CELLS
  199. help
  200. This allows one to create vxlan virtual interfaces that provide
  201. Layer 2 Networks over Layer 3 Networks. VXLAN is often used
  202. to tunnel virtual network infrastructure in virtualized environments.
  203. For more information see:
  204. http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-02
  205. To compile this driver as a module, choose M here: the module
  206. will be called vxlan.
  207. config GENEVE
  208. tristate "Generic Network Virtualization Encapsulation"
  209. depends on INET
  210. depends on IPV6 || !IPV6
  211. select NET_UDP_TUNNEL
  212. select GRO_CELLS
  213. help
  214. This allows one to create geneve virtual interfaces that provide
  215. Layer 2 Networks over Layer 3 Networks. GENEVE is often used
  216. to tunnel virtual network infrastructure in virtualized environments.
  217. For more information see:
  218. http://tools.ietf.org/html/draft-gross-geneve-02
  219. To compile this driver as a module, choose M here: the module
  220. will be called geneve.
  221. config BAREUDP
  222. tristate "Bare UDP Encapsulation"
  223. depends on INET
  224. depends on IPV6 || !IPV6
  225. select NET_UDP_TUNNEL
  226. select GRO_CELLS
  227. help
  228. This adds a bare UDP tunnel module for tunnelling different
  229. kinds of traffic like MPLS, IP, etc. inside a UDP tunnel.
  230. To compile this driver as a module, choose M here: the module
  231. will be called bareudp.
  232. config GTP
  233. tristate "GPRS Tunneling Protocol datapath (GTP-U)"
  234. depends on INET
  235. select NET_UDP_TUNNEL
  236. help
  237. This allows one to create gtp virtual interfaces that provide
  238. the GPRS Tunneling Protocol datapath (GTP-U). This tunneling protocol
  239. is used to prevent subscribers from accessing mobile carrier core
  240. network infrastructure. This driver requires a userspace software that
  241. implements the signaling protocol (GTP-C) to update its PDP context
  242. base, such as OpenGGSN <http://git.osmocom.org/openggsn/). This
  243. tunneling protocol is implemented according to the GSM TS 09.60 and
  244. 3GPP TS 29.060 standards.
  245. To compile this drivers as a module, choose M here: the module
  246. will be called gtp.
  247. config PFCP
  248. tristate "Packet Forwarding Control Protocol (PFCP)"
  249. depends on INET
  250. select NET_UDP_TUNNEL
  251. help
  252. This allows one to create PFCP virtual interfaces that allows to
  253. set up software and hardware offload of PFCP packets.
  254. Note that this module does not support PFCP protocol in the kernel space.
  255. There is no support for parsing any PFCP messages.
  256. To compile this drivers as a module, choose M here: the module
  257. will be called pfcp.
  258. config AMT
  259. tristate "Automatic Multicast Tunneling (AMT)"
  260. depends on INET && IP_MULTICAST
  261. depends on IPV6 || !IPV6
  262. select NET_UDP_TUNNEL
  263. help
  264. This allows one to create AMT(Automatic Multicast Tunneling)
  265. virtual interfaces that provide multicast tunneling.
  266. There are two roles, Gateway, and Relay.
  267. Gateway Encapsulates IGMP/MLD traffic from listeners to the Relay.
  268. Gateway Decapsulates multicast traffic from the Relay to Listeners.
  269. Relay Encapsulates multicast traffic from Sources to Gateway.
  270. Relay Decapsulates IGMP/MLD traffic from Gateway.
  271. To compile this drivers as a module, choose M here: the module
  272. will be called amt.
  273. config MACSEC
  274. tristate "IEEE 802.1AE MAC-level encryption (MACsec)"
  275. select CRYPTO
  276. select CRYPTO_AES
  277. select CRYPTO_GCM
  278. select GRO_CELLS
  279. help
  280. MACsec is an encryption standard for Ethernet.
  281. config NETCONSOLE
  282. tristate "Network console logging support"
  283. depends on PRINTK
  284. help
  285. If you want to log kernel messages over the network, enable this.
  286. See <file:Documentation/networking/netconsole.rst> for details.
  287. config NETCONSOLE_DYNAMIC
  288. bool "Dynamic reconfiguration of logging targets"
  289. depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \
  290. !(NETCONSOLE=y && CONFIGFS_FS=m)
  291. select PRINTK_EXECUTION_CTX
  292. help
  293. This option enables the ability to dynamically reconfigure target
  294. parameters (interface, IP addresses, port numbers, MAC addresses)
  295. at runtime through a userspace interface exported using configfs.
  296. See <file:Documentation/networking/netconsole.rst> for details.
  297. config NETCONSOLE_EXTENDED_LOG
  298. bool "Set kernel extended message by default"
  299. depends on NETCONSOLE
  300. default n
  301. help
  302. Set extended log support for netconsole message. If this option is
  303. set, log messages are transmitted with extended metadata header in a
  304. format similar to /dev/kmsg. See
  305. <file:Documentation/networking/netconsole.rst> for details.
  306. config NETCONSOLE_PREPEND_RELEASE
  307. bool "Prepend kernel release version in the message by default"
  308. depends on NETCONSOLE_EXTENDED_LOG
  309. default n
  310. help
  311. Set kernel release to be prepended to each netconsole message by
  312. default. If this option is set, the kernel release is prepended into
  313. the first field of every netconsole message, so, the netconsole
  314. server/peer can easily identify what kernel release is logging each
  315. message. See <file:Documentation/networking/netconsole.rst> for
  316. details.
  317. config NETPOLL
  318. def_bool NETCONSOLE
  319. config NET_POLL_CONTROLLER
  320. def_bool NETPOLL
  321. config NTB_NETDEV
  322. tristate "Virtual Ethernet over NTB Transport"
  323. depends on NTB_TRANSPORT
  324. config RIONET
  325. tristate "RapidIO Ethernet over messaging driver support"
  326. depends on RAPIDIO
  327. config RIONET_TX_SIZE
  328. int "Number of outbound queue entries"
  329. depends on RIONET
  330. default "128"
  331. config RIONET_RX_SIZE
  332. int "Number of inbound queue entries"
  333. depends on RIONET
  334. default "128"
  335. config TUN
  336. tristate "Universal TUN/TAP device driver support"
  337. depends on INET
  338. select CRC32
  339. help
  340. TUN/TAP provides packet reception and transmission for user space
  341. programs. It can be viewed as a simple Point-to-Point or Ethernet
  342. device, which instead of receiving packets from a physical media,
  343. receives them from user space program and instead of sending packets
  344. via physical media writes them to the user space program.
  345. When a program opens /dev/net/tun, driver creates and registers
  346. corresponding net device tunX or tapX. After a program closed above
  347. devices, driver will automatically delete tunXX or tapXX device and
  348. all routes corresponding to it.
  349. Please read <file:Documentation/networking/tuntap.rst> for more
  350. information.
  351. To compile this driver as a module, choose M here: the module
  352. will be called tun.
  353. If you don't know what to use this for, you don't need it.
  354. config TAP
  355. tristate
  356. help
  357. This option is selected by any driver implementing tap user space
  358. interface for a virtual interface to re-use core tap functionality.
  359. config TUN_VNET_CROSS_LE
  360. bool "Support for cross-endian vnet headers on little-endian kernels"
  361. default n
  362. help
  363. This option allows TUN/TAP and MACVTAP device drivers in a
  364. little-endian kernel to parse vnet headers that come from a
  365. big-endian legacy virtio device.
  366. Userspace programs can control the feature using the TUNSETVNETBE
  367. and TUNGETVNETBE ioctls.
  368. Unless you have a little-endian system hosting a big-endian virtual
  369. machine with a legacy virtio NIC, you should say N.
  370. config VETH
  371. tristate "Virtual ethernet pair device"
  372. select PAGE_POOL
  373. help
  374. This device is a local ethernet tunnel. Devices are created in pairs.
  375. When one end receives the packet it appears on its pair and vice
  376. versa.
  377. config VIRTIO_NET
  378. tristate "Virtio network driver"
  379. depends on VIRTIO
  380. select NET_FAILOVER
  381. select DIMLIB
  382. help
  383. This is the virtual network driver for virtio. It can be used with
  384. QEMU based VMMs (like KVM or Xen). Say Y or M.
  385. config NLMON
  386. tristate "Virtual netlink monitoring device"
  387. help
  388. This option enables a monitoring net device for netlink skbs. The
  389. purpose of this is to analyze netlink messages with packet sockets.
  390. Thus applications like tcpdump will be able to see local netlink
  391. messages if they tap into the netlink device, record pcaps for further
  392. diagnostics, etc. This is mostly intended for developers or support
  393. to debug netlink issues. If unsure, say N.
  394. config NETKIT
  395. bool "BPF-programmable network device"
  396. depends on BPF_SYSCALL
  397. help
  398. The netkit device is a virtual networking device where BPF programs
  399. can be attached to the device(s) transmission routine in order to
  400. implement the driver's internal logic. The device can be configured
  401. to operate in L3 or L2 mode. If unsure, say N.
  402. config NET_VRF
  403. tristate "Virtual Routing and Forwarding (Lite)"
  404. depends on IP_MULTIPLE_TABLES
  405. depends on NET_L3_MASTER_DEV
  406. depends on IPV6 || IPV6=n
  407. depends on IPV6_MULTIPLE_TABLES || IPV6=n
  408. help
  409. This option enables the support for mapping interfaces into VRF's. The
  410. support enables VRF devices.
  411. config VSOCKMON
  412. tristate "Virtual vsock monitoring device"
  413. depends on VHOST_VSOCK
  414. help
  415. This option enables a monitoring net device for vsock sockets. It is
  416. mostly intended for developers or support to debug vsock issues. If
  417. unsure, say N.
  418. config MHI_NET
  419. tristate "MHI network driver"
  420. depends on MHI_BUS
  421. help
  422. This is the network driver for MHI bus. It can be used with
  423. QCOM based WWAN modems for IP or QMAP/rmnet protocol (like SDX55).
  424. Say Y or M.
  425. endif # NET_CORE
  426. config SUNGEM_PHY
  427. tristate
  428. source "drivers/net/arcnet/Kconfig"
  429. source "drivers/atm/Kconfig"
  430. source "drivers/net/caif/Kconfig"
  431. source "drivers/net/dsa/Kconfig"
  432. source "drivers/net/ethernet/Kconfig"
  433. source "drivers/net/fddi/Kconfig"
  434. source "drivers/net/ipa/Kconfig"
  435. source "drivers/net/phy/Kconfig"
  436. source "drivers/net/pse-pd/Kconfig"
  437. source "drivers/net/can/Kconfig"
  438. source "drivers/net/mctp/Kconfig"
  439. source "drivers/net/mdio/Kconfig"
  440. source "drivers/net/pcs/Kconfig"
  441. source "drivers/net/plip/Kconfig"
  442. source "drivers/net/ppp/Kconfig"
  443. source "drivers/net/slip/Kconfig"
  444. source "drivers/s390/net/Kconfig"
  445. source "drivers/net/usb/Kconfig"
  446. source "drivers/net/wireless/Kconfig"
  447. source "drivers/net/wan/Kconfig"
  448. source "drivers/net/ieee802154/Kconfig"
  449. source "drivers/net/wwan/Kconfig"
  450. config XEN_NETDEV_FRONTEND
  451. tristate "Xen network device frontend driver"
  452. depends on XEN
  453. select XEN_XENBUS_FRONTEND
  454. select PAGE_POOL
  455. default y
  456. help
  457. This driver provides support for Xen paravirtual network
  458. devices exported by a Xen network driver domain (often
  459. domain 0).
  460. The corresponding Linux backend driver is enabled by the
  461. CONFIG_XEN_NETDEV_BACKEND option.
  462. If you are compiling a kernel for use as Xen guest, you
  463. should say Y here. To compile this driver as a module, chose
  464. M here: the module will be called xen-netfront.
  465. config XEN_NETDEV_BACKEND
  466. tristate "Xen backend network device"
  467. depends on XEN_BACKEND
  468. help
  469. This driver allows the kernel to act as a Xen network driver
  470. domain which exports paravirtual network devices to other
  471. Xen domains. These devices can be accessed by any operating
  472. system that implements a compatible front end.
  473. The corresponding Linux frontend driver is enabled by the
  474. CONFIG_XEN_NETDEV_FRONTEND configuration option.
  475. The backend driver presents a standard network device
  476. endpoint for each paravirtual network device to the driver
  477. domain network stack. These can then be bridged or routed
  478. etc in order to provide full network connectivity.
  479. If you are compiling a kernel to run in a Xen network driver
  480. domain (often this is domain 0) you should say Y here. To
  481. compile this driver as a module, chose M here: the module
  482. will be called xen-netback.
  483. config VMXNET3
  484. tristate "VMware VMXNET3 ethernet driver"
  485. depends on PCI && INET
  486. depends on PAGE_SIZE_LESS_THAN_64KB
  487. select PAGE_POOL
  488. help
  489. This driver supports VMware's vmxnet3 virtual ethernet NIC.
  490. To compile this driver as a module, choose M here: the
  491. module will be called vmxnet3.
  492. config FUJITSU_ES
  493. tristate "FUJITSU Extended Socket Network Device driver"
  494. depends on ACPI
  495. help
  496. This driver provides support for Extended Socket network device
  497. on Extended Partitioning of FUJITSU PRIMEQUEST 2000 E2 series.
  498. source "drivers/net/thunderbolt/Kconfig"
  499. source "drivers/net/hyperv/Kconfig"
  500. config NETDEVSIM
  501. tristate "Simulated networking device"
  502. depends on DEBUG_FS
  503. depends on INET
  504. depends on IPV6 || IPV6=n
  505. depends on PSAMPLE || PSAMPLE=n
  506. depends on PTP_1588_CLOCK_MOCK || PTP_1588_CLOCK_MOCK=n
  507. select NET_DEVLINK
  508. select PAGE_POOL
  509. select NET_SHAPER
  510. help
  511. This driver is a developer testing tool and software model that can
  512. be used to test various control path networking APIs, especially
  513. HW-offload related.
  514. To compile this driver as a module, choose M here: the module
  515. will be called netdevsim.
  516. config NET_FAILOVER
  517. tristate "Failover driver"
  518. select FAILOVER
  519. help
  520. This provides an automated failover mechanism via APIs to create
  521. and destroy a failover master netdev and manages a primary and
  522. standby slave netdevs that get registered via the generic failover
  523. infrastructure. This can be used by paravirtual drivers to enable
  524. an alternate low latency datapath. It also enables live migration of
  525. a VM with direct attached VF by failing over to the paravirtual
  526. datapath when the VF is unplugged.
  527. config NETDEV_LEGACY_INIT
  528. bool
  529. depends on ISA
  530. help
  531. Drivers that call netdev_boot_setup_check() should select this
  532. symbol, everything else no longer needs it.
  533. endif # NETDEVICES