1# SPDX-License-Identifier: GPL-2.0-only 2# 3# Network device configuration 4# 5 6menuconfig NETDEVICES 7 default y if UML 8 depends on NET 9 bool "Network device support" 10 help 11 You can say N here if you don't intend to connect your Linux box to 12 any other computer at all. 13 14 You'll have to say Y if your computer contains a network card that 15 you want to use under Linux. If you are going to run SLIP or PPP over 16 telephone line or null modem cable you need say Y here. Connecting 17 two machines with parallel ports using PLIP needs this, as well as 18 AX.25/KISS for sending Internet traffic over amateur radio links. 19 20 See also "The Linux Network Administrator's Guide" by Olaf Kirch and 21 Terry Dawson. Available at <http://www.tldp.org/guides.html>. 22 23 If unsure, say Y. 24 25# All the following symbols are dependent on NETDEVICES - do not repeat 26# that for each of the symbols. 27if NETDEVICES 28 29config MII 30 tristate 31 32config NET_CORE 33 default y 34 bool "Network core driver support" 35 help 36 You can say N here if you do not intend to use any of the 37 networking core drivers (i.e. VLAN, bridging, bonding, etc.) 38 39if NET_CORE 40 41config BONDING 42 tristate "Bonding driver support" 43 depends on INET 44 depends on IPV6 || IPV6=n 45 depends on TLS || TLS_DEVICE=n 46 help 47 Say 'Y' or 'M' if you wish to be able to 'bond' multiple Ethernet 48 Channels together. This is called 'Etherchannel' by Cisco, 49 'Trunking' by Sun, 802.3ad by the IEEE, and 'Bonding' in Linux. 50 51 The driver supports multiple bonding modes to allow for both high 52 performance and high availability operation. 53 54 Refer to <file:Documentation/networking/bonding.rst> for more 55 information. 56 57 To compile this driver as a module, choose M here: the module 58 will be called bonding. 59 60config DUMMY 61 tristate "Dummy net driver support" 62 help 63 This is essentially a bit-bucket device (i.e. traffic you send to 64 this device is consigned into oblivion) with a configurable IP 65 address. It is most commonly used in order to make your currently 66 inactive SLIP address seem like a real address for local programs. 67 If you use SLIP or PPP, you might want to say Y here. It won't 68 enlarge your kernel. What a deal. Read about it in the Network 69 Administrator's Guide, available from 70 <http://www.tldp.org/docs.html#guide>. 71 72 To compile this driver as a module, choose M here: the module 73 will be called dummy. 74 75config WIREGUARD 76 tristate "WireGuard secure network tunnel" 77 depends on NET && INET 78 depends on IPV6 || !IPV6 79 select NET_UDP_TUNNEL 80 select DST_CACHE 81 select CRYPTO 82 select CRYPTO_LIB_CURVE25519 83 select CRYPTO_LIB_CHACHA20POLY1305 84 select CRYPTO_LIB_BLAKE2S 85 select CRYPTO_CHACHA20_X86_64 if X86 && 64BIT 86 select CRYPTO_POLY1305_X86_64 if X86 && 64BIT 87 select CRYPTO_BLAKE2S_X86 if X86 && 64BIT 88 select CRYPTO_CURVE25519_X86 if X86 && 64BIT 89 select ARM_CRYPTO if ARM 90 select ARM64_CRYPTO if ARM64 91 select CRYPTO_CHACHA20_NEON if ARM || (ARM64 && KERNEL_MODE_NEON) 92 select CRYPTO_POLY1305_NEON if ARM64 && KERNEL_MODE_NEON 93 select CRYPTO_POLY1305_ARM if ARM 94 select CRYPTO_BLAKE2S_ARM if ARM 95 select CRYPTO_CURVE25519_NEON if ARM && KERNEL_MODE_NEON 96 select CRYPTO_CHACHA_MIPS if CPU_MIPS32_R2 97 select CRYPTO_POLY1305_MIPS if MIPS 98 help 99 WireGuard is a secure, fast, and easy to use replacement for IPSec 100 that uses modern cryptography and clever networking tricks. It's 101 designed to be fairly general purpose and abstract enough to fit most 102 use cases, while at the same time remaining extremely simple to 103 configure. See www.wireguard.com for more info. 104 105 It's safe to say Y or M here, as the driver is very lightweight and 106 is only in use when an administrator chooses to add an interface. 107 108config WIREGUARD_DEBUG 109 bool "Debugging checks and verbose messages" 110 depends on WIREGUARD 111 help 112 This will write log messages for handshake and other events 113 that occur for a WireGuard interface. It will also perform some 114 extra validation checks and unit tests at various points. This is 115 only useful for debugging. 116 117 Say N here unless you know what you're doing. 118 119config EQUALIZER 120 tristate "EQL (serial line load balancing) support" 121 help 122 If you have two serial connections to some other computer (this 123 usually requires two modems and two telephone lines) and you use 124 SLIP (the protocol for sending Internet traffic over telephone 125 lines) or PPP (a better SLIP) on them, you can make them behave like 126 one double speed connection using this driver. Naturally, this has 127 to be supported at the other end as well, either with a similar EQL 128 Linux driver or with a Livingston Portmaster 2e. 129 130 Say Y if you want this and read 131 <file:Documentation/networking/eql.rst>. You may also want to read 132 section 6.2 of the NET-3-HOWTO, available from 133 <http://www.tldp.org/docs.html#howto>. 134 135 To compile this driver as a module, choose M here: the module 136 will be called eql. If unsure, say N. 137 138config NET_FC 139 bool "Fibre Channel driver support" 140 depends on SCSI && PCI 141 help 142 Fibre Channel is a high speed serial protocol mainly used to connect 143 large storage devices to the computer; it is compatible with and 144 intended to replace SCSI. 145 146 If you intend to use Fibre Channel, you need to have a Fibre channel 147 adaptor card in your computer; say Y here and to the driver for your 148 adaptor below. You also should have said Y to "SCSI support" and 149 "SCSI generic support". 150 151config IFB 152 tristate "Intermediate Functional Block support" 153 depends on NET_CLS_ACT 154 select NET_REDIRECT 155 help 156 This is an intermediate driver that allows sharing of 157 resources. 158 To compile this driver as a module, choose M here: the module 159 will be called ifb. If you want to use more than one ifb 160 device at a time, you need to compile this driver as a module. 161 Instead of 'ifb', the devices will then be called 'ifb0', 162 'ifb1' etc. 163 Look at the iproute2 documentation directory for usage etc 164 165source "drivers/net/team/Kconfig" 166 167config MACVLAN 168 tristate "MAC-VLAN support" 169 help 170 This allows one to create virtual interfaces that map packets to 171 or from specific MAC addresses to a particular interface. 172 173 Macvlan devices can be added using the "ip" command from the 174 iproute2 package starting with the iproute2-2.6.23 release: 175 176 "ip link add link <real dev> [ address MAC ] [ NAME ] type macvlan" 177 178 To compile this driver as a module, choose M here: the module 179 will be called macvlan. 180 181config MACVTAP 182 tristate "MAC-VLAN based tap driver" 183 depends on MACVLAN 184 depends on INET 185 select TAP 186 help 187 This adds a specialized tap character device driver that is based 188 on the MAC-VLAN network interface, called macvtap. A macvtap device 189 can be added in the same way as a macvlan device, using 'type 190 macvtap', and then be accessed through the tap user space interface. 191 192 To compile this driver as a module, choose M here: the module 193 will be called macvtap. 194 195config IPVLAN_L3S 196 depends on NETFILTER 197 depends on IPVLAN 198 def_bool y 199 select NET_L3_MASTER_DEV 200 201config IPVLAN 202 tristate "IP-VLAN support" 203 depends on INET 204 depends on IPV6 || !IPV6 205 help 206 This allows one to create virtual devices off of a main interface 207 and packets will be delivered based on the dest L3 (IPv6/IPv4 addr) 208 on packets. All interfaces (including the main interface) share L2 209 making it transparent to the connected L2 switch. 210 211 Ipvlan devices can be added using the "ip" command from the 212 iproute2 package starting with the iproute2-3.19 release: 213 214 "ip link add link <main-dev> [ NAME ] type ipvlan" 215 216 To compile this driver as a module, choose M here: the module 217 will be called ipvlan. 218 219config IPVTAP 220 tristate "IP-VLAN based tap driver" 221 depends on IPVLAN 222 depends on INET 223 select TAP 224 help 225 This adds a specialized tap character device driver that is based 226 on the IP-VLAN network interface, called ipvtap. An ipvtap device 227 can be added in the same way as a ipvlan device, using 'type 228 ipvtap', and then be accessed through the tap user space interface. 229 230 To compile this driver as a module, choose M here: the module 231 will be called ipvtap. 232 233config VXLAN 234 tristate "Virtual eXtensible Local Area Network (VXLAN)" 235 depends on INET 236 select NET_UDP_TUNNEL 237 select GRO_CELLS 238 help 239 This allows one to create vxlan virtual interfaces that provide 240 Layer 2 Networks over Layer 3 Networks. VXLAN is often used 241 to tunnel virtual network infrastructure in virtualized environments. 242 For more information see: 243 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-02 244 245 To compile this driver as a module, choose M here: the module 246 will be called vxlan. 247 248config GENEVE 249 tristate "Generic Network Virtualization Encapsulation" 250 depends on INET 251 depends on IPV6 || !IPV6 252 select NET_UDP_TUNNEL 253 select GRO_CELLS 254 help 255 This allows one to create geneve virtual interfaces that provide 256 Layer 2 Networks over Layer 3 Networks. GENEVE is often used 257 to tunnel virtual network infrastructure in virtualized environments. 258 For more information see: 259 http://tools.ietf.org/html/draft-gross-geneve-02 260 261 To compile this driver as a module, choose M here: the module 262 will be called geneve. 263 264config BAREUDP 265 tristate "Bare UDP Encapsulation" 266 depends on INET 267 depends on IPV6 || !IPV6 268 select NET_UDP_TUNNEL 269 select GRO_CELLS 270 help 271 This adds a bare UDP tunnel module for tunnelling different 272 kinds of traffic like MPLS, IP, etc. inside a UDP tunnel. 273 274 To compile this driver as a module, choose M here: the module 275 will be called bareudp. 276 277config GTP 278 tristate "GPRS Tunneling Protocol datapath (GTP-U)" 279 depends on INET 280 select NET_UDP_TUNNEL 281 help 282 This allows one to create gtp virtual interfaces that provide 283 the GPRS Tunneling Protocol datapath (GTP-U). This tunneling protocol 284 is used to prevent subscribers from accessing mobile carrier core 285 network infrastructure. This driver requires a userspace software that 286 implements the signaling protocol (GTP-C) to update its PDP context 287 base, such as OpenGGSN <http://git.osmocom.org/openggsn/). This 288 tunneling protocol is implemented according to the GSM TS 09.60 and 289 3GPP TS 29.060 standards. 290 291 To compile this drivers as a module, choose M here: the module 292 will be called gtp. 293 294config MACSEC 295 tristate "IEEE 802.1AE MAC-level encryption (MACsec)" 296 select CRYPTO 297 select CRYPTO_AES 298 select CRYPTO_GCM 299 select GRO_CELLS 300 help 301 MACsec is an encryption standard for Ethernet. 302 303config NETCONSOLE 304 tristate "Network console logging support" 305 help 306 If you want to log kernel messages over the network, enable this. 307 See <file:Documentation/networking/netconsole.rst> for details. 308 309config NETCONSOLE_DYNAMIC 310 bool "Dynamic reconfiguration of logging targets" 311 depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \ 312 !(NETCONSOLE=y && CONFIGFS_FS=m) 313 help 314 This option enables the ability to dynamically reconfigure target 315 parameters (interface, IP addresses, port numbers, MAC addresses) 316 at runtime through a userspace interface exported using configfs. 317 See <file:Documentation/networking/netconsole.rst> for details. 318 319config NETPOLL 320 def_bool NETCONSOLE 321 select SRCU 322 323config NET_POLL_CONTROLLER 324 def_bool NETPOLL 325 326config NTB_NETDEV 327 tristate "Virtual Ethernet over NTB Transport" 328 depends on NTB_TRANSPORT 329 330config RIONET 331 tristate "RapidIO Ethernet over messaging driver support" 332 depends on RAPIDIO 333 334config RIONET_TX_SIZE 335 int "Number of outbound queue entries" 336 depends on RIONET 337 default "128" 338 339config RIONET_RX_SIZE 340 int "Number of inbound queue entries" 341 depends on RIONET 342 default "128" 343 344config TUN 345 tristate "Universal TUN/TAP device driver support" 346 depends on INET 347 select CRC32 348 help 349 TUN/TAP provides packet reception and transmission for user space 350 programs. It can be viewed as a simple Point-to-Point or Ethernet 351 device, which instead of receiving packets from a physical media, 352 receives them from user space program and instead of sending packets 353 via physical media writes them to the user space program. 354 355 When a program opens /dev/net/tun, driver creates and registers 356 corresponding net device tunX or tapX. After a program closed above 357 devices, driver will automatically delete tunXX or tapXX device and 358 all routes corresponding to it. 359 360 Please read <file:Documentation/networking/tuntap.rst> for more 361 information. 362 363 To compile this driver as a module, choose M here: the module 364 will be called tun. 365 366 If you don't know what to use this for, you don't need it. 367 368config TAP 369 tristate 370 help 371 This option is selected by any driver implementing tap user space 372 interface for a virtual interface to re-use core tap functionality. 373 374config TUN_VNET_CROSS_LE 375 bool "Support for cross-endian vnet headers on little-endian kernels" 376 default n 377 help 378 This option allows TUN/TAP and MACVTAP device drivers in a 379 little-endian kernel to parse vnet headers that come from a 380 big-endian legacy virtio device. 381 382 Userspace programs can control the feature using the TUNSETVNETBE 383 and TUNGETVNETBE ioctls. 384 385 Unless you have a little-endian system hosting a big-endian virtual 386 machine with a legacy virtio NIC, you should say N. 387 388config VETH 389 tristate "Virtual ethernet pair device" 390 help 391 This device is a local ethernet tunnel. Devices are created in pairs. 392 When one end receives the packet it appears on its pair and vice 393 versa. 394 395config VIRTIO_NET 396 tristate "Virtio network driver" 397 depends on VIRTIO 398 select NET_FAILOVER 399 help 400 This is the virtual network driver for virtio. It can be used with 401 QEMU based VMMs (like KVM or Xen). Say Y or M. 402 403config NLMON 404 tristate "Virtual netlink monitoring device" 405 help 406 This option enables a monitoring net device for netlink skbs. The 407 purpose of this is to analyze netlink messages with packet sockets. 408 Thus applications like tcpdump will be able to see local netlink 409 messages if they tap into the netlink device, record pcaps for further 410 diagnostics, etc. This is mostly intended for developers or support 411 to debug netlink issues. If unsure, say N. 412 413config NET_VRF 414 tristate "Virtual Routing and Forwarding (Lite)" 415 depends on IP_MULTIPLE_TABLES 416 depends on NET_L3_MASTER_DEV 417 depends on IPV6 || IPV6=n 418 depends on IPV6_MULTIPLE_TABLES || IPV6=n 419 help 420 This option enables the support for mapping interfaces into VRF's. The 421 support enables VRF devices. 422 423config VSOCKMON 424 tristate "Virtual vsock monitoring device" 425 depends on VHOST_VSOCK 426 help 427 This option enables a monitoring net device for vsock sockets. It is 428 mostly intended for developers or support to debug vsock issues. If 429 unsure, say N. 430 431config MHI_NET 432 tristate "MHI network driver" 433 depends on MHI_BUS 434 select WWAN 435 help 436 This is the network driver for MHI bus. It can be used with 437 QCOM based WWAN modems (like SDX55). Say Y or M. 438 439endif # NET_CORE 440 441config SUNGEM_PHY 442 tristate 443 444source "drivers/net/arcnet/Kconfig" 445 446source "drivers/atm/Kconfig" 447 448source "drivers/net/caif/Kconfig" 449 450source "drivers/net/dsa/Kconfig" 451 452source "drivers/net/ethernet/Kconfig" 453 454source "drivers/net/fddi/Kconfig" 455 456source "drivers/net/hippi/Kconfig" 457 458source "drivers/net/ipa/Kconfig" 459 460config NET_SB1000 461 tristate "General Instruments Surfboard 1000" 462 depends on PNP 463 help 464 This is a driver for the General Instrument (also known as 465 NextLevel) SURFboard 1000 internal 466 cable modem. This is an ISA card which is used by a number of cable 467 TV companies to provide cable modem access. It's a one-way 468 downstream-only cable modem, meaning that your upstream net link is 469 provided by your regular phone modem. 470 471 At present this driver only compiles as a module, so say M here if 472 you have this card. The module will be called sb1000. Then read 473 <file:Documentation/networking/device_drivers/cable/sb1000.rst> for 474 information on how to use this module, as it needs special ppp 475 scripts for establishing a connection. Further documentation 476 and the necessary scripts can be found at: 477 478 <http://www.jacksonville.net/~fventuri/> 479 <http://home.adelphia.net/~siglercm/sb1000.html> 480 <http://linuxpower.cx/~cable/> 481 482 If you don't have this card, of course say N. 483 484source "drivers/net/phy/Kconfig" 485 486source "drivers/net/mdio/Kconfig" 487 488source "drivers/net/pcs/Kconfig" 489 490source "drivers/net/plip/Kconfig" 491 492source "drivers/net/ppp/Kconfig" 493 494source "drivers/net/slip/Kconfig" 495 496source "drivers/s390/net/Kconfig" 497 498source "drivers/net/usb/Kconfig" 499 500source "drivers/net/wireless/Kconfig" 501 502source "drivers/net/wan/Kconfig" 503 504source "drivers/net/ieee802154/Kconfig" 505 506source "drivers/net/wwan/Kconfig" 507 508config XEN_NETDEV_FRONTEND 509 tristate "Xen network device frontend driver" 510 depends on XEN 511 select XEN_XENBUS_FRONTEND 512 select PAGE_POOL 513 default y 514 help 515 This driver provides support for Xen paravirtual network 516 devices exported by a Xen network driver domain (often 517 domain 0). 518 519 The corresponding Linux backend driver is enabled by the 520 CONFIG_XEN_NETDEV_BACKEND option. 521 522 If you are compiling a kernel for use as Xen guest, you 523 should say Y here. To compile this driver as a module, chose 524 M here: the module will be called xen-netfront. 525 526config XEN_NETDEV_BACKEND 527 tristate "Xen backend network device" 528 depends on XEN_BACKEND 529 help 530 This driver allows the kernel to act as a Xen network driver 531 domain which exports paravirtual network devices to other 532 Xen domains. These devices can be accessed by any operating 533 system that implements a compatible front end. 534 535 The corresponding Linux frontend driver is enabled by the 536 CONFIG_XEN_NETDEV_FRONTEND configuration option. 537 538 The backend driver presents a standard network device 539 endpoint for each paravirtual network device to the driver 540 domain network stack. These can then be bridged or routed 541 etc in order to provide full network connectivity. 542 543 If you are compiling a kernel to run in a Xen network driver 544 domain (often this is domain 0) you should say Y here. To 545 compile this driver as a module, chose M here: the module 546 will be called xen-netback. 547 548config VMXNET3 549 tristate "VMware VMXNET3 ethernet driver" 550 depends on PCI && INET 551 depends on !(PAGE_SIZE_64KB || ARM64_64K_PAGES || \ 552 IA64_PAGE_SIZE_64KB || MICROBLAZE_64K_PAGES || \ 553 PARISC_PAGE_SIZE_64KB || PPC_64K_PAGES) 554 help 555 This driver supports VMware's vmxnet3 virtual ethernet NIC. 556 To compile this driver as a module, choose M here: the 557 module will be called vmxnet3. 558 559config FUJITSU_ES 560 tristate "FUJITSU Extended Socket Network Device driver" 561 depends on ACPI 562 help 563 This driver provides support for Extended Socket network device 564 on Extended Partitioning of FUJITSU PRIMEQUEST 2000 E2 series. 565 566config USB4_NET 567 tristate "Networking over USB4 and Thunderbolt cables" 568 depends on USB4 && INET 569 help 570 Select this if you want to create network between two computers 571 over a USB4 and Thunderbolt cables. The driver supports Apple 572 ThunderboltIP protocol and allows communication with any host 573 supporting the same protocol including Windows and macOS. 574 575 To compile this driver a module, choose M here. The module will be 576 called thunderbolt-net. 577 578source "drivers/net/hyperv/Kconfig" 579 580config NETDEVSIM 581 tristate "Simulated networking device" 582 depends on DEBUG_FS 583 depends on INET 584 depends on IPV6 || IPV6=n 585 depends on PSAMPLE || PSAMPLE=n 586 select NET_DEVLINK 587 help 588 This driver is a developer testing tool and software model that can 589 be used to test various control path networking APIs, especially 590 HW-offload related. 591 592 To compile this driver as a module, choose M here: the module 593 will be called netdevsim. 594 595config NET_FAILOVER 596 tristate "Failover driver" 597 select FAILOVER 598 help 599 This provides an automated failover mechanism via APIs to create 600 and destroy a failover master netdev and manages a primary and 601 standby slave netdevs that get registered via the generic failover 602 infrastructure. This can be used by paravirtual drivers to enable 603 an alternate low latency datapath. It also enables live migration of 604 a VM with direct attached VF by failing over to the paravirtual 605 datapath when the VF is unplugged. 606 607endif # NETDEVICES 608