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 select CRYPTO_CHACHA_S390 if S390 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_ACT_MIRRED || NFT_FWD_NETDEV 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 AMT 295 tristate "Automatic Multicast Tunneling (AMT)" 296 depends on INET && IP_MULTICAST 297 depends on IPV6 || !IPV6 298 select NET_UDP_TUNNEL 299 help 300 This allows one to create AMT(Automatic Multicast Tunneling) 301 virtual interfaces that provide multicast tunneling. 302 There are two roles, Gateway, and Relay. 303 Gateway Encapsulates IGMP/MLD traffic from listeners to the Relay. 304 Gateway Decapsulates multicast traffic from the Relay to Listeners. 305 Relay Encapsulates multicast traffic from Sources to Gateway. 306 Relay Decapsulates IGMP/MLD traffic from Gateway. 307 308 To compile this drivers as a module, choose M here: the module 309 will be called amt. 310 311config MACSEC 312 tristate "IEEE 802.1AE MAC-level encryption (MACsec)" 313 select CRYPTO 314 select CRYPTO_AES 315 select CRYPTO_GCM 316 select GRO_CELLS 317 help 318 MACsec is an encryption standard for Ethernet. 319 320config NETCONSOLE 321 tristate "Network console logging support" 322 help 323 If you want to log kernel messages over the network, enable this. 324 See <file:Documentation/networking/netconsole.rst> for details. 325 326config NETCONSOLE_DYNAMIC 327 bool "Dynamic reconfiguration of logging targets" 328 depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \ 329 !(NETCONSOLE=y && CONFIGFS_FS=m) 330 help 331 This option enables the ability to dynamically reconfigure target 332 parameters (interface, IP addresses, port numbers, MAC addresses) 333 at runtime through a userspace interface exported using configfs. 334 See <file:Documentation/networking/netconsole.rst> for details. 335 336config NETPOLL 337 def_bool NETCONSOLE 338 select SRCU 339 340config NET_POLL_CONTROLLER 341 def_bool NETPOLL 342 343config NTB_NETDEV 344 tristate "Virtual Ethernet over NTB Transport" 345 depends on NTB_TRANSPORT 346 347config RIONET 348 tristate "RapidIO Ethernet over messaging driver support" 349 depends on RAPIDIO 350 351config RIONET_TX_SIZE 352 int "Number of outbound queue entries" 353 depends on RIONET 354 default "128" 355 356config RIONET_RX_SIZE 357 int "Number of inbound queue entries" 358 depends on RIONET 359 default "128" 360 361config TUN 362 tristate "Universal TUN/TAP device driver support" 363 depends on INET 364 select CRC32 365 help 366 TUN/TAP provides packet reception and transmission for user space 367 programs. It can be viewed as a simple Point-to-Point or Ethernet 368 device, which instead of receiving packets from a physical media, 369 receives them from user space program and instead of sending packets 370 via physical media writes them to the user space program. 371 372 When a program opens /dev/net/tun, driver creates and registers 373 corresponding net device tunX or tapX. After a program closed above 374 devices, driver will automatically delete tunXX or tapXX device and 375 all routes corresponding to it. 376 377 Please read <file:Documentation/networking/tuntap.rst> for more 378 information. 379 380 To compile this driver as a module, choose M here: the module 381 will be called tun. 382 383 If you don't know what to use this for, you don't need it. 384 385config TAP 386 tristate 387 help 388 This option is selected by any driver implementing tap user space 389 interface for a virtual interface to re-use core tap functionality. 390 391config TUN_VNET_CROSS_LE 392 bool "Support for cross-endian vnet headers on little-endian kernels" 393 default n 394 help 395 This option allows TUN/TAP and MACVTAP device drivers in a 396 little-endian kernel to parse vnet headers that come from a 397 big-endian legacy virtio device. 398 399 Userspace programs can control the feature using the TUNSETVNETBE 400 and TUNGETVNETBE ioctls. 401 402 Unless you have a little-endian system hosting a big-endian virtual 403 machine with a legacy virtio NIC, you should say N. 404 405config VETH 406 tristate "Virtual ethernet pair device" 407 help 408 This device is a local ethernet tunnel. Devices are created in pairs. 409 When one end receives the packet it appears on its pair and vice 410 versa. 411 412config VIRTIO_NET 413 tristate "Virtio network driver" 414 depends on VIRTIO 415 select NET_FAILOVER 416 help 417 This is the virtual network driver for virtio. It can be used with 418 QEMU based VMMs (like KVM or Xen). Say Y or M. 419 420config NLMON 421 tristate "Virtual netlink monitoring device" 422 help 423 This option enables a monitoring net device for netlink skbs. The 424 purpose of this is to analyze netlink messages with packet sockets. 425 Thus applications like tcpdump will be able to see local netlink 426 messages if they tap into the netlink device, record pcaps for further 427 diagnostics, etc. This is mostly intended for developers or support 428 to debug netlink issues. If unsure, say N. 429 430config NET_VRF 431 tristate "Virtual Routing and Forwarding (Lite)" 432 depends on IP_MULTIPLE_TABLES 433 depends on NET_L3_MASTER_DEV 434 depends on IPV6 || IPV6=n 435 depends on IPV6_MULTIPLE_TABLES || IPV6=n 436 help 437 This option enables the support for mapping interfaces into VRF's. The 438 support enables VRF devices. 439 440config VSOCKMON 441 tristate "Virtual vsock monitoring device" 442 depends on VHOST_VSOCK 443 help 444 This option enables a monitoring net device for vsock sockets. It is 445 mostly intended for developers or support to debug vsock issues. If 446 unsure, say N. 447 448config MHI_NET 449 tristate "MHI network driver" 450 depends on MHI_BUS 451 help 452 This is the network driver for MHI bus. It can be used with 453 QCOM based WWAN modems for IP or QMAP/rmnet protocol (like SDX55). 454 Say Y or M. 455 456endif # NET_CORE 457 458config SUNGEM_PHY 459 tristate 460 461source "drivers/net/arcnet/Kconfig" 462 463source "drivers/atm/Kconfig" 464 465source "drivers/net/caif/Kconfig" 466 467source "drivers/net/dsa/Kconfig" 468 469source "drivers/net/ethernet/Kconfig" 470 471source "drivers/net/fddi/Kconfig" 472 473source "drivers/net/hippi/Kconfig" 474 475source "drivers/net/ipa/Kconfig" 476 477config NET_SB1000 478 tristate "General Instruments Surfboard 1000" 479 depends on PNP 480 help 481 This is a driver for the General Instrument (also known as 482 NextLevel) SURFboard 1000 internal 483 cable modem. This is an ISA card which is used by a number of cable 484 TV companies to provide cable modem access. It's a one-way 485 downstream-only cable modem, meaning that your upstream net link is 486 provided by your regular phone modem. 487 488 At present this driver only compiles as a module, so say M here if 489 you have this card. The module will be called sb1000. Then read 490 <file:Documentation/networking/device_drivers/cable/sb1000.rst> for 491 information on how to use this module, as it needs special ppp 492 scripts for establishing a connection. Further documentation 493 and the necessary scripts can be found at: 494 495 <http://www.jacksonville.net/~fventuri/> 496 <http://home.adelphia.net/~siglercm/sb1000.html> 497 <http://linuxpower.cx/~cable/> 498 499 If you don't have this card, of course say N. 500 501source "drivers/net/phy/Kconfig" 502 503source "drivers/net/can/Kconfig" 504 505source "drivers/net/mctp/Kconfig" 506 507source "drivers/net/mdio/Kconfig" 508 509source "drivers/net/pcs/Kconfig" 510 511source "drivers/net/plip/Kconfig" 512 513source "drivers/net/ppp/Kconfig" 514 515source "drivers/net/slip/Kconfig" 516 517source "drivers/s390/net/Kconfig" 518 519source "drivers/net/usb/Kconfig" 520 521source "drivers/net/wireless/Kconfig" 522 523source "drivers/net/wan/Kconfig" 524 525source "drivers/net/ieee802154/Kconfig" 526 527source "drivers/net/wwan/Kconfig" 528 529config XEN_NETDEV_FRONTEND 530 tristate "Xen network device frontend driver" 531 depends on XEN 532 select XEN_XENBUS_FRONTEND 533 select PAGE_POOL 534 default y 535 help 536 This driver provides support for Xen paravirtual network 537 devices exported by a Xen network driver domain (often 538 domain 0). 539 540 The corresponding Linux backend driver is enabled by the 541 CONFIG_XEN_NETDEV_BACKEND option. 542 543 If you are compiling a kernel for use as Xen guest, you 544 should say Y here. To compile this driver as a module, chose 545 M here: the module will be called xen-netfront. 546 547config XEN_NETDEV_BACKEND 548 tristate "Xen backend network device" 549 depends on XEN_BACKEND 550 help 551 This driver allows the kernel to act as a Xen network driver 552 domain which exports paravirtual network devices to other 553 Xen domains. These devices can be accessed by any operating 554 system that implements a compatible front end. 555 556 The corresponding Linux frontend driver is enabled by the 557 CONFIG_XEN_NETDEV_FRONTEND configuration option. 558 559 The backend driver presents a standard network device 560 endpoint for each paravirtual network device to the driver 561 domain network stack. These can then be bridged or routed 562 etc in order to provide full network connectivity. 563 564 If you are compiling a kernel to run in a Xen network driver 565 domain (often this is domain 0) you should say Y here. To 566 compile this driver as a module, chose M here: the module 567 will be called xen-netback. 568 569config VMXNET3 570 tristate "VMware VMXNET3 ethernet driver" 571 depends on PCI && INET 572 depends on PAGE_SIZE_LESS_THAN_64KB 573 help 574 This driver supports VMware's vmxnet3 virtual ethernet NIC. 575 To compile this driver as a module, choose M here: the 576 module will be called vmxnet3. 577 578config FUJITSU_ES 579 tristate "FUJITSU Extended Socket Network Device driver" 580 depends on ACPI 581 help 582 This driver provides support for Extended Socket network device 583 on Extended Partitioning of FUJITSU PRIMEQUEST 2000 E2 series. 584 585config USB4_NET 586 tristate "Networking over USB4 and Thunderbolt cables" 587 depends on USB4 && INET 588 help 589 Select this if you want to create network between two computers 590 over a USB4 and Thunderbolt cables. The driver supports Apple 591 ThunderboltIP protocol and allows communication with any host 592 supporting the same protocol including Windows and macOS. 593 594 To compile this driver a module, choose M here. The module will be 595 called thunderbolt-net. 596 597source "drivers/net/hyperv/Kconfig" 598 599config NETDEVSIM 600 tristate "Simulated networking device" 601 depends on DEBUG_FS 602 depends on INET 603 depends on IPV6 || IPV6=n 604 depends on PSAMPLE || PSAMPLE=n 605 select NET_DEVLINK 606 help 607 This driver is a developer testing tool and software model that can 608 be used to test various control path networking APIs, especially 609 HW-offload related. 610 611 To compile this driver as a module, choose M here: the module 612 will be called netdevsim. 613 614config NET_FAILOVER 615 tristate "Failover driver" 616 select FAILOVER 617 help 618 This provides an automated failover mechanism via APIs to create 619 and destroy a failover master netdev and manages a primary and 620 standby slave netdevs that get registered via the generic failover 621 infrastructure. This can be used by paravirtual drivers to enable 622 an alternate low latency datapath. It also enables live migration of 623 a VM with direct attached VF by failing over to the paravirtual 624 datapath when the VF is unplugged. 625 626config NETDEV_LEGACY_INIT 627 bool 628 depends on ISA 629 help 630 Drivers that call netdev_boot_setup_check() should select this 631 symbol, everything else no longer needs it. 632 633endif # NETDEVICES 634