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_CHACHA20_X86_64 if X86 && 64BIT 85 select CRYPTO_POLY1305_X86_64 if X86 && 64BIT 86 select CRYPTO_BLAKE2S_X86 if X86 && 64BIT 87 select CRYPTO_CURVE25519_X86 if X86 && 64BIT 88 select ARM_CRYPTO if ARM 89 select ARM64_CRYPTO if ARM64 90 select CRYPTO_CHACHA20_NEON if ARM || (ARM64 && KERNEL_MODE_NEON) 91 select CRYPTO_POLY1305_NEON if ARM64 && KERNEL_MODE_NEON 92 select CRYPTO_POLY1305_ARM if ARM 93 select CRYPTO_BLAKE2S_ARM if ARM 94 select CRYPTO_CURVE25519_NEON if ARM && KERNEL_MODE_NEON 95 select CRYPTO_CHACHA_MIPS if CPU_MIPS32_R2 96 select CRYPTO_POLY1305_MIPS if MIPS 97 help 98 WireGuard is a secure, fast, and easy to use replacement for IPSec 99 that uses modern cryptography and clever networking tricks. It's 100 designed to be fairly general purpose and abstract enough to fit most 101 use cases, while at the same time remaining extremely simple to 102 configure. See www.wireguard.com for more info. 103 104 It's safe to say Y or M here, as the driver is very lightweight and 105 is only in use when an administrator chooses to add an interface. 106 107config WIREGUARD_DEBUG 108 bool "Debugging checks and verbose messages" 109 depends on WIREGUARD 110 help 111 This will write log messages for handshake and other events 112 that occur for a WireGuard interface. It will also perform some 113 extra validation checks and unit tests at various points. This is 114 only useful for debugging. 115 116 Say N here unless you know what you're doing. 117 118config EQUALIZER 119 tristate "EQL (serial line load balancing) support" 120 help 121 If you have two serial connections to some other computer (this 122 usually requires two modems and two telephone lines) and you use 123 SLIP (the protocol for sending Internet traffic over telephone 124 lines) or PPP (a better SLIP) on them, you can make them behave like 125 one double speed connection using this driver. Naturally, this has 126 to be supported at the other end as well, either with a similar EQL 127 Linux driver or with a Livingston Portmaster 2e. 128 129 Say Y if you want this and read 130 <file:Documentation/networking/eql.rst>. You may also want to read 131 section 6.2 of the NET-3-HOWTO, available from 132 <http://www.tldp.org/docs.html#howto>. 133 134 To compile this driver as a module, choose M here: the module 135 will be called eql. If unsure, say N. 136 137config NET_FC 138 bool "Fibre Channel driver support" 139 depends on SCSI && PCI 140 help 141 Fibre Channel is a high speed serial protocol mainly used to connect 142 large storage devices to the computer; it is compatible with and 143 intended to replace SCSI. 144 145 If you intend to use Fibre Channel, you need to have a Fibre channel 146 adaptor card in your computer; say Y here and to the driver for your 147 adaptor below. You also should have said Y to "SCSI support" and 148 "SCSI generic support". 149 150config IFB 151 tristate "Intermediate Functional Block support" 152 depends on NET_ACT_MIRRED || NFT_FWD_NETDEV 153 select NET_REDIRECT 154 help 155 This is an intermediate driver that allows sharing of 156 resources. 157 To compile this driver as a module, choose M here: the module 158 will be called ifb. If you want to use more than one ifb 159 device at a time, you need to compile this driver as a module. 160 Instead of 'ifb', the devices will then be called 'ifb0', 161 'ifb1' etc. 162 Look at the iproute2 documentation directory for usage etc 163 164source "drivers/net/team/Kconfig" 165 166config MACVLAN 167 tristate "MAC-VLAN support" 168 help 169 This allows one to create virtual interfaces that map packets to 170 or from specific MAC addresses to a particular interface. 171 172 Macvlan devices can be added using the "ip" command from the 173 iproute2 package starting with the iproute2-2.6.23 release: 174 175 "ip link add link <real dev> [ address MAC ] [ NAME ] type macvlan" 176 177 To compile this driver as a module, choose M here: the module 178 will be called macvlan. 179 180config MACVTAP 181 tristate "MAC-VLAN based tap driver" 182 depends on MACVLAN 183 depends on INET 184 select TAP 185 help 186 This adds a specialized tap character device driver that is based 187 on the MAC-VLAN network interface, called macvtap. A macvtap device 188 can be added in the same way as a macvlan device, using 'type 189 macvtap', and then be accessed through the tap user space interface. 190 191 To compile this driver as a module, choose M here: the module 192 will be called macvtap. 193 194config IPVLAN_L3S 195 depends on NETFILTER 196 depends on IPVLAN 197 def_bool y 198 select NET_L3_MASTER_DEV 199 200config IPVLAN 201 tristate "IP-VLAN support" 202 depends on INET 203 depends on IPV6 || !IPV6 204 help 205 This allows one to create virtual devices off of a main interface 206 and packets will be delivered based on the dest L3 (IPv6/IPv4 addr) 207 on packets. All interfaces (including the main interface) share L2 208 making it transparent to the connected L2 switch. 209 210 Ipvlan devices can be added using the "ip" command from the 211 iproute2 package starting with the iproute2-3.19 release: 212 213 "ip link add link <main-dev> [ NAME ] type ipvlan" 214 215 To compile this driver as a module, choose M here: the module 216 will be called ipvlan. 217 218config IPVTAP 219 tristate "IP-VLAN based tap driver" 220 depends on IPVLAN 221 depends on INET 222 select TAP 223 help 224 This adds a specialized tap character device driver that is based 225 on the IP-VLAN network interface, called ipvtap. An ipvtap device 226 can be added in the same way as a ipvlan device, using 'type 227 ipvtap', and then be accessed through the tap user space interface. 228 229 To compile this driver as a module, choose M here: the module 230 will be called ipvtap. 231 232config VXLAN 233 tristate "Virtual eXtensible Local Area Network (VXLAN)" 234 depends on INET 235 select NET_UDP_TUNNEL 236 select GRO_CELLS 237 help 238 This allows one to create vxlan virtual interfaces that provide 239 Layer 2 Networks over Layer 3 Networks. VXLAN is often used 240 to tunnel virtual network infrastructure in virtualized environments. 241 For more information see: 242 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-02 243 244 To compile this driver as a module, choose M here: the module 245 will be called vxlan. 246 247config GENEVE 248 tristate "Generic Network Virtualization Encapsulation" 249 depends on INET 250 depends on IPV6 || !IPV6 251 select NET_UDP_TUNNEL 252 select GRO_CELLS 253 help 254 This allows one to create geneve virtual interfaces that provide 255 Layer 2 Networks over Layer 3 Networks. GENEVE is often used 256 to tunnel virtual network infrastructure in virtualized environments. 257 For more information see: 258 http://tools.ietf.org/html/draft-gross-geneve-02 259 260 To compile this driver as a module, choose M here: the module 261 will be called geneve. 262 263config BAREUDP 264 tristate "Bare UDP Encapsulation" 265 depends on INET 266 depends on IPV6 || !IPV6 267 select NET_UDP_TUNNEL 268 select GRO_CELLS 269 help 270 This adds a bare UDP tunnel module for tunnelling different 271 kinds of traffic like MPLS, IP, etc. inside a UDP tunnel. 272 273 To compile this driver as a module, choose M here: the module 274 will be called bareudp. 275 276config GTP 277 tristate "GPRS Tunneling Protocol datapath (GTP-U)" 278 depends on INET 279 select NET_UDP_TUNNEL 280 help 281 This allows one to create gtp virtual interfaces that provide 282 the GPRS Tunneling Protocol datapath (GTP-U). This tunneling protocol 283 is used to prevent subscribers from accessing mobile carrier core 284 network infrastructure. This driver requires a userspace software that 285 implements the signaling protocol (GTP-C) to update its PDP context 286 base, such as OpenGGSN <http://git.osmocom.org/openggsn/). This 287 tunneling protocol is implemented according to the GSM TS 09.60 and 288 3GPP TS 29.060 standards. 289 290 To compile this drivers as a module, choose M here: the module 291 will be called gtp. 292 293config AMT 294 tristate "Automatic Multicast Tunneling (AMT)" 295 depends on INET && IP_MULTICAST 296 depends on IPV6 || !IPV6 297 select NET_UDP_TUNNEL 298 help 299 This allows one to create AMT(Automatic Multicast Tunneling) 300 virtual interfaces that provide multicast tunneling. 301 There are two roles, Gateway, and Relay. 302 Gateway Encapsulates IGMP/MLD traffic from listeners to the Relay. 303 Gateway Decapsulates multicast traffic from the Relay to Listeners. 304 Relay Encapsulates multicast traffic from Sources to Gateway. 305 Relay Decapsulates IGMP/MLD traffic from Gateway. 306 307 To compile this drivers as a module, choose M here: the module 308 will be called amt. 309 310config MACSEC 311 tristate "IEEE 802.1AE MAC-level encryption (MACsec)" 312 select CRYPTO 313 select CRYPTO_AES 314 select CRYPTO_GCM 315 select GRO_CELLS 316 help 317 MACsec is an encryption standard for Ethernet. 318 319config NETCONSOLE 320 tristate "Network console logging support" 321 help 322 If you want to log kernel messages over the network, enable this. 323 See <file:Documentation/networking/netconsole.rst> for details. 324 325config NETCONSOLE_DYNAMIC 326 bool "Dynamic reconfiguration of logging targets" 327 depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \ 328 !(NETCONSOLE=y && CONFIGFS_FS=m) 329 help 330 This option enables the ability to dynamically reconfigure target 331 parameters (interface, IP addresses, port numbers, MAC addresses) 332 at runtime through a userspace interface exported using configfs. 333 See <file:Documentation/networking/netconsole.rst> for details. 334 335config NETPOLL 336 def_bool NETCONSOLE 337 select SRCU 338 339config NET_POLL_CONTROLLER 340 def_bool NETPOLL 341 342config NTB_NETDEV 343 tristate "Virtual Ethernet over NTB Transport" 344 depends on NTB_TRANSPORT 345 346config RIONET 347 tristate "RapidIO Ethernet over messaging driver support" 348 depends on RAPIDIO 349 350config RIONET_TX_SIZE 351 int "Number of outbound queue entries" 352 depends on RIONET 353 default "128" 354 355config RIONET_RX_SIZE 356 int "Number of inbound queue entries" 357 depends on RIONET 358 default "128" 359 360config TUN 361 tristate "Universal TUN/TAP device driver support" 362 depends on INET 363 select CRC32 364 help 365 TUN/TAP provides packet reception and transmission for user space 366 programs. It can be viewed as a simple Point-to-Point or Ethernet 367 device, which instead of receiving packets from a physical media, 368 receives them from user space program and instead of sending packets 369 via physical media writes them to the user space program. 370 371 When a program opens /dev/net/tun, driver creates and registers 372 corresponding net device tunX or tapX. After a program closed above 373 devices, driver will automatically delete tunXX or tapXX device and 374 all routes corresponding to it. 375 376 Please read <file:Documentation/networking/tuntap.rst> for more 377 information. 378 379 To compile this driver as a module, choose M here: the module 380 will be called tun. 381 382 If you don't know what to use this for, you don't need it. 383 384config TAP 385 tristate 386 help 387 This option is selected by any driver implementing tap user space 388 interface for a virtual interface to re-use core tap functionality. 389 390config TUN_VNET_CROSS_LE 391 bool "Support for cross-endian vnet headers on little-endian kernels" 392 default n 393 help 394 This option allows TUN/TAP and MACVTAP device drivers in a 395 little-endian kernel to parse vnet headers that come from a 396 big-endian legacy virtio device. 397 398 Userspace programs can control the feature using the TUNSETVNETBE 399 and TUNGETVNETBE ioctls. 400 401 Unless you have a little-endian system hosting a big-endian virtual 402 machine with a legacy virtio NIC, you should say N. 403 404config VETH 405 tristate "Virtual ethernet pair device" 406 help 407 This device is a local ethernet tunnel. Devices are created in pairs. 408 When one end receives the packet it appears on its pair and vice 409 versa. 410 411config VIRTIO_NET 412 tristate "Virtio network driver" 413 depends on VIRTIO 414 select NET_FAILOVER 415 help 416 This is the virtual network driver for virtio. It can be used with 417 QEMU based VMMs (like KVM or Xen). Say Y or M. 418 419config NLMON 420 tristate "Virtual netlink monitoring device" 421 help 422 This option enables a monitoring net device for netlink skbs. The 423 purpose of this is to analyze netlink messages with packet sockets. 424 Thus applications like tcpdump will be able to see local netlink 425 messages if they tap into the netlink device, record pcaps for further 426 diagnostics, etc. This is mostly intended for developers or support 427 to debug netlink issues. If unsure, say N. 428 429config NET_VRF 430 tristate "Virtual Routing and Forwarding (Lite)" 431 depends on IP_MULTIPLE_TABLES 432 depends on NET_L3_MASTER_DEV 433 depends on IPV6 || IPV6=n 434 depends on IPV6_MULTIPLE_TABLES || IPV6=n 435 help 436 This option enables the support for mapping interfaces into VRF's. The 437 support enables VRF devices. 438 439config VSOCKMON 440 tristate "Virtual vsock monitoring device" 441 depends on VHOST_VSOCK 442 help 443 This option enables a monitoring net device for vsock sockets. It is 444 mostly intended for developers or support to debug vsock issues. If 445 unsure, say N. 446 447config MHI_NET 448 tristate "MHI network driver" 449 depends on MHI_BUS 450 help 451 This is the network driver for MHI bus. It can be used with 452 QCOM based WWAN modems for IP or QMAP/rmnet protocol (like SDX55). 453 Say Y or M. 454 455endif # NET_CORE 456 457config SUNGEM_PHY 458 tristate 459 460source "drivers/net/arcnet/Kconfig" 461 462source "drivers/atm/Kconfig" 463 464source "drivers/net/caif/Kconfig" 465 466source "drivers/net/dsa/Kconfig" 467 468source "drivers/net/ethernet/Kconfig" 469 470source "drivers/net/fddi/Kconfig" 471 472source "drivers/net/hippi/Kconfig" 473 474source "drivers/net/ipa/Kconfig" 475 476config NET_SB1000 477 tristate "General Instruments Surfboard 1000" 478 depends on PNP 479 help 480 This is a driver for the General Instrument (also known as 481 NextLevel) SURFboard 1000 internal 482 cable modem. This is an ISA card which is used by a number of cable 483 TV companies to provide cable modem access. It's a one-way 484 downstream-only cable modem, meaning that your upstream net link is 485 provided by your regular phone modem. 486 487 At present this driver only compiles as a module, so say M here if 488 you have this card. The module will be called sb1000. Then read 489 <file:Documentation/networking/device_drivers/cable/sb1000.rst> for 490 information on how to use this module, as it needs special ppp 491 scripts for establishing a connection. Further documentation 492 and the necessary scripts can be found at: 493 494 <http://www.jacksonville.net/~fventuri/> 495 <http://home.adelphia.net/~siglercm/sb1000.html> 496 <http://linuxpower.cx/~cable/> 497 498 If you don't have this card, of course say N. 499 500source "drivers/net/phy/Kconfig" 501 502source "drivers/net/mctp/Kconfig" 503 504source "drivers/net/mdio/Kconfig" 505 506source "drivers/net/pcs/Kconfig" 507 508source "drivers/net/plip/Kconfig" 509 510source "drivers/net/ppp/Kconfig" 511 512source "drivers/net/slip/Kconfig" 513 514source "drivers/s390/net/Kconfig" 515 516source "drivers/net/usb/Kconfig" 517 518source "drivers/net/wireless/Kconfig" 519 520source "drivers/net/wan/Kconfig" 521 522source "drivers/net/ieee802154/Kconfig" 523 524source "drivers/net/wwan/Kconfig" 525 526config XEN_NETDEV_FRONTEND 527 tristate "Xen network device frontend driver" 528 depends on XEN 529 select XEN_XENBUS_FRONTEND 530 select PAGE_POOL 531 default y 532 help 533 This driver provides support for Xen paravirtual network 534 devices exported by a Xen network driver domain (often 535 domain 0). 536 537 The corresponding Linux backend driver is enabled by the 538 CONFIG_XEN_NETDEV_BACKEND option. 539 540 If you are compiling a kernel for use as Xen guest, you 541 should say Y here. To compile this driver as a module, chose 542 M here: the module will be called xen-netfront. 543 544config XEN_NETDEV_BACKEND 545 tristate "Xen backend network device" 546 depends on XEN_BACKEND 547 help 548 This driver allows the kernel to act as a Xen network driver 549 domain which exports paravirtual network devices to other 550 Xen domains. These devices can be accessed by any operating 551 system that implements a compatible front end. 552 553 The corresponding Linux frontend driver is enabled by the 554 CONFIG_XEN_NETDEV_FRONTEND configuration option. 555 556 The backend driver presents a standard network device 557 endpoint for each paravirtual network device to the driver 558 domain network stack. These can then be bridged or routed 559 etc in order to provide full network connectivity. 560 561 If you are compiling a kernel to run in a Xen network driver 562 domain (often this is domain 0) you should say Y here. To 563 compile this driver as a module, chose M here: the module 564 will be called xen-netback. 565 566config VMXNET3 567 tristate "VMware VMXNET3 ethernet driver" 568 depends on PCI && INET 569 depends on PAGE_SIZE_LESS_THAN_64KB 570 help 571 This driver supports VMware's vmxnet3 virtual ethernet NIC. 572 To compile this driver as a module, choose M here: the 573 module will be called vmxnet3. 574 575config FUJITSU_ES 576 tristate "FUJITSU Extended Socket Network Device driver" 577 depends on ACPI 578 help 579 This driver provides support for Extended Socket network device 580 on Extended Partitioning of FUJITSU PRIMEQUEST 2000 E2 series. 581 582config USB4_NET 583 tristate "Networking over USB4 and Thunderbolt cables" 584 depends on USB4 && INET 585 help 586 Select this if you want to create network between two computers 587 over a USB4 and Thunderbolt cables. The driver supports Apple 588 ThunderboltIP protocol and allows communication with any host 589 supporting the same protocol including Windows and macOS. 590 591 To compile this driver a module, choose M here. The module will be 592 called thunderbolt-net. 593 594source "drivers/net/hyperv/Kconfig" 595 596config NETDEVSIM 597 tristate "Simulated networking device" 598 depends on DEBUG_FS 599 depends on INET 600 depends on IPV6 || IPV6=n 601 depends on PSAMPLE || PSAMPLE=n 602 select NET_DEVLINK 603 help 604 This driver is a developer testing tool and software model that can 605 be used to test various control path networking APIs, especially 606 HW-offload related. 607 608 To compile this driver as a module, choose M here: the module 609 will be called netdevsim. 610 611config NET_FAILOVER 612 tristate "Failover driver" 613 select FAILOVER 614 help 615 This provides an automated failover mechanism via APIs to create 616 and destroy a failover master netdev and manages a primary and 617 standby slave netdevs that get registered via the generic failover 618 infrastructure. This can be used by paravirtual drivers to enable 619 an alternate low latency datapath. It also enables live migration of 620 a VM with direct attached VF by failing over to the paravirtual 621 datapath when the VF is unplugged. 622 623config NETDEV_LEGACY_INIT 624 bool 625 depends on ISA 626 help 627 Drivers that call netdev_boot_setup_check() should select this 628 symbol, everything else no longer needs it. 629 630endif # NETDEVICES 631