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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 TLS || TLS_DEVICE=n
45 help
46 Say 'Y' or 'M' if you wish to be able to 'bond' multiple Ethernet
47 Channels together. This is called 'Etherchannel' by Cisco,
48 'Trunking' by Sun, 802.3ad by the IEEE, and 'Bonding' in Linux.
49
50 The driver supports multiple bonding modes to allow for both high
51 performance and high availability operation.
52
53 Refer to <file:Documentation/networking/bonding.rst> for more
54 information.
55
56 To compile this driver as a module, choose M here: the module
57 will be called bonding.
58
59config DUMMY
60 tristate "Dummy net driver support"
61 help
62 This is essentially a bit-bucket device (i.e. traffic you send to
63 this device is consigned into oblivion) with a configurable IP
64 address. It is most commonly used in order to make your currently
65 inactive SLIP address seem like a real address for local programs.
66 If you use SLIP or PPP, you might want to say Y here. It won't
67 enlarge your kernel. What a deal. Read about it in the Network
68 Administrator's Guide, available from
69 <http://www.tldp.org/docs.html#guide>.
70
71 To compile this driver as a module, choose M here: the module
72 will be called dummy.
73
74config WIREGUARD
75 tristate "WireGuard secure network tunnel"
76 depends on NET && INET
77 select NET_UDP_TUNNEL
78 select DST_CACHE
79 select CRYPTO_LIB_CURVE25519
80 select CRYPTO_LIB_CHACHA20POLY1305
81 select CRYPTO_LIB_UTILS
82 help
83 WireGuard is a secure, fast, and easy to use replacement for IPSec
84 that uses modern cryptography and clever networking tricks. It's
85 designed to be fairly general purpose and abstract enough to fit most
86 use cases, while at the same time remaining extremely simple to
87 configure. See www.wireguard.com for more info.
88
89 It's safe to say Y or M here, as the driver is very lightweight and
90 is only in use when an administrator chooses to add an interface.
91
92config WIREGUARD_DEBUG
93 bool "Debugging checks and verbose messages"
94 depends on WIREGUARD
95 help
96 This will write log messages for handshake and other events
97 that occur for a WireGuard interface. It will also perform some
98 extra validation checks and unit tests at various points. This is
99 only useful for debugging.
100
101 Say N here unless you know what you're doing.
102
103config OVPN
104 tristate "OpenVPN data channel offload"
105 depends on NET && INET
106 select DST_CACHE
107 select NET_UDP_TUNNEL
108 select CRYPTO
109 select CRYPTO_AES
110 select CRYPTO_GCM
111 select CRYPTO_CHACHA20POLY1305
112 select STREAM_PARSER
113 help
114 This module enhances the performance of the OpenVPN userspace software
115 by offloading the data channel processing to kernelspace.
116
117config EQUALIZER
118 tristate "EQL (serial line load balancing) support"
119 help
120 If you have two serial connections to some other computer (this
121 usually requires two modems and two telephone lines) and you use
122 SLIP (the protocol for sending Internet traffic over telephone
123 lines) or PPP (a better SLIP) on them, you can make them behave like
124 one double speed connection using this driver. Naturally, this has
125 to be supported at the other end as well, either with a similar EQL
126 Linux driver or with a Livingston Portmaster 2e.
127
128 Say Y if you want this and read
129 <file:Documentation/networking/eql.rst>. You may also want to read
130 section 6.2 of the NET-3-HOWTO, available from
131 <http://www.tldp.org/docs.html#howto>.
132
133 To compile this driver as a module, choose M here: the module
134 will be called eql. If unsure, say N.
135
136config NET_FC
137 bool "Fibre Channel driver support"
138 depends on SCSI && PCI
139 help
140 Fibre Channel is a high speed serial protocol mainly used to connect
141 large storage devices to the computer; it is compatible with and
142 intended to replace SCSI.
143
144 If you intend to use Fibre Channel, you need to have a Fibre channel
145 adaptor card in your computer; say Y here and to the driver for your
146 adaptor below. You also should have said Y to "SCSI support" and
147 "SCSI generic support".
148
149config IFB
150 tristate "Intermediate Functional Block support"
151 depends on NET_ACT_MIRRED || NFT_FWD_NETDEV
152 select NET_REDIRECT
153 help
154 This is an intermediate driver that allows sharing of
155 resources.
156 To compile this driver as a module, choose M here: the module
157 will be called ifb. If you want to use more than one ifb
158 device at a time, you need to compile this driver as a module.
159 Instead of 'ifb', the devices will then be called 'ifb0',
160 'ifb1' etc.
161 Look at the iproute2 documentation directory for usage etc
162
163source "drivers/net/team/Kconfig"
164
165config MACVLAN
166 tristate "MAC-VLAN support"
167 help
168 This allows one to create virtual interfaces that map packets to
169 or from specific MAC addresses to a particular interface.
170
171 Macvlan devices can be added using the "ip" command from the
172 iproute2 package starting with the iproute2-2.6.23 release:
173
174 "ip link add link <real dev> [ address MAC ] [ NAME ] type macvlan"
175
176 To compile this driver as a module, choose M here: the module
177 will be called macvlan.
178
179config MACVTAP
180 tristate "MAC-VLAN based tap driver"
181 depends on MACVLAN
182 depends on INET
183 select TAP
184 help
185 This adds a specialized tap character device driver that is based
186 on the MAC-VLAN network interface, called macvtap. A macvtap device
187 can be added in the same way as a macvlan device, using 'type
188 macvtap', and then be accessed through the tap user space interface.
189
190 To compile this driver as a module, choose M here: the module
191 will be called macvtap.
192
193config IPVLAN_L3S
194 depends on NETFILTER
195 depends on IPVLAN
196 def_bool y
197 select NET_L3_MASTER_DEV
198
199config IPVLAN
200 tristate "IP-VLAN support"
201 depends on INET
202 help
203 This allows one to create virtual devices off of a main interface
204 and packets will be delivered based on the dest L3 (IPv6/IPv4 addr)
205 on packets. All interfaces (including the main interface) share L2
206 making it transparent to the connected L2 switch.
207
208 Ipvlan devices can be added using the "ip" command from the
209 iproute2 package starting with the iproute2-3.19 release:
210
211 "ip link add link <main-dev> [ NAME ] type ipvlan"
212
213 To compile this driver as a module, choose M here: the module
214 will be called ipvlan.
215
216config IPVTAP
217 tristate "IP-VLAN based tap driver"
218 depends on IPVLAN
219 depends on INET
220 select TAP
221 help
222 This adds a specialized tap character device driver that is based
223 on the IP-VLAN network interface, called ipvtap. An ipvtap device
224 can be added in the same way as a ipvlan device, using 'type
225 ipvtap', and then be accessed through the tap user space interface.
226
227 To compile this driver as a module, choose M here: the module
228 will be called ipvtap.
229
230config VXLAN
231 tristate "Virtual eXtensible Local Area Network (VXLAN)"
232 depends on INET
233 select NET_UDP_TUNNEL
234 select GRO_CELLS
235 help
236 This allows one to create vxlan virtual interfaces that provide
237 Layer 2 Networks over Layer 3 Networks. VXLAN is often used
238 to tunnel virtual network infrastructure in virtualized environments.
239 For more information see:
240 http://tools.ietf.org/html/draft-mahalingam-dutt-dcops-vxlan-02
241
242 To compile this driver as a module, choose M here: the module
243 will be called vxlan.
244
245config GENEVE
246 tristate "Generic Network Virtualization Encapsulation"
247 depends on INET
248 select NET_UDP_TUNNEL
249 select GRO_CELLS
250 help
251 This allows one to create geneve virtual interfaces that provide
252 Layer 2 Networks over Layer 3 Networks. GENEVE is often used
253 to tunnel virtual network infrastructure in virtualized environments.
254 For more information see:
255 http://tools.ietf.org/html/draft-gross-geneve-02
256
257 To compile this driver as a module, choose M here: the module
258 will be called geneve.
259
260config BAREUDP
261 tristate "Bare UDP Encapsulation"
262 depends on INET
263 select NET_UDP_TUNNEL
264 select GRO_CELLS
265 help
266 This adds a bare UDP tunnel module for tunnelling different
267 kinds of traffic like MPLS, IP, etc. inside a UDP tunnel.
268
269 To compile this driver as a module, choose M here: the module
270 will be called bareudp.
271
272config GTP
273 tristate "GPRS Tunneling Protocol datapath (GTP-U)"
274 depends on INET
275 select NET_UDP_TUNNEL
276 help
277 This allows one to create gtp virtual interfaces that provide
278 the GPRS Tunneling Protocol datapath (GTP-U). This tunneling protocol
279 is used to prevent subscribers from accessing mobile carrier core
280 network infrastructure. This driver requires a userspace software that
281 implements the signaling protocol (GTP-C) to update its PDP context
282 base, such as OpenGGSN <http://git.osmocom.org/openggsn/). This
283 tunneling protocol is implemented according to the GSM TS 09.60 and
284 3GPP TS 29.060 standards.
285
286 To compile this drivers as a module, choose M here: the module
287 will be called gtp.
288
289config PFCP
290 tristate "Packet Forwarding Control Protocol (PFCP)"
291 depends on INET
292 select NET_UDP_TUNNEL
293 help
294 This allows one to create PFCP virtual interfaces that allows to
295 set up software and hardware offload of PFCP packets.
296 Note that this module does not support PFCP protocol in the kernel space.
297 There is no support for parsing any PFCP messages.
298
299 To compile this drivers as a module, choose M here: the module
300 will be called pfcp.
301
302config AMT
303 tristate "Automatic Multicast Tunneling (AMT)"
304 depends on INET && IP_MULTICAST
305 select NET_UDP_TUNNEL
306 help
307 This allows one to create AMT(Automatic Multicast Tunneling)
308 virtual interfaces that provide multicast tunneling.
309 There are two roles, Gateway, and Relay.
310 Gateway Encapsulates IGMP/MLD traffic from listeners to the Relay.
311 Gateway Decapsulates multicast traffic from the Relay to Listeners.
312 Relay Encapsulates multicast traffic from Sources to Gateway.
313 Relay Decapsulates IGMP/MLD traffic from Gateway.
314
315 To compile this drivers as a module, choose M here: the module
316 will be called amt.
317
318config MACSEC
319 tristate "IEEE 802.1AE MAC-level encryption (MACsec)"
320 select CRYPTO
321 select CRYPTO_AES
322 select CRYPTO_GCM
323 select GRO_CELLS
324 help
325 MACsec is an encryption standard for Ethernet.
326
327config NETCONSOLE
328 tristate "Network console logging support"
329 depends on PRINTK
330 help
331 If you want to log kernel messages over the network, enable this.
332 See <file:Documentation/networking/netconsole.rst> for details.
333
334config NETCONSOLE_DYNAMIC
335 bool "Dynamic reconfiguration of logging targets"
336 depends on NETCONSOLE && SYSFS && CONFIGFS_FS && \
337 !(NETCONSOLE=y && CONFIGFS_FS=m)
338 select PRINTK_EXECUTION_CTX
339 help
340 This option enables the ability to dynamically reconfigure target
341 parameters (interface, IP addresses, port numbers, MAC addresses)
342 at runtime through a userspace interface exported using configfs.
343 See <file:Documentation/networking/netconsole.rst> for details.
344
345config NETCONSOLE_EXTENDED_LOG
346 bool "Set kernel extended message by default"
347 depends on NETCONSOLE
348 default n
349 help
350 Set extended log support for netconsole message. If this option is
351 set, log messages are transmitted with extended metadata header in a
352 format similar to /dev/kmsg. See
353 <file:Documentation/networking/netconsole.rst> for details.
354
355config NETCONSOLE_PREPEND_RELEASE
356 bool "Prepend kernel release version in the message by default"
357 depends on NETCONSOLE_EXTENDED_LOG
358 default n
359 help
360 Set kernel release to be prepended to each netconsole message by
361 default. If this option is set, the kernel release is prepended into
362 the first field of every netconsole message, so, the netconsole
363 server/peer can easily identify what kernel release is logging each
364 message. See <file:Documentation/networking/netconsole.rst> for
365 details.
366
367config NETPOLL
368 def_bool NETCONSOLE
369
370config NET_POLL_CONTROLLER
371 def_bool NETPOLL
372
373config NTB_NETDEV
374 tristate "Virtual Ethernet over NTB Transport"
375 depends on NTB_TRANSPORT
376
377config RIONET
378 tristate "RapidIO Ethernet over messaging driver support"
379 depends on RAPIDIO
380
381config RIONET_TX_SIZE
382 int "Number of outbound queue entries"
383 depends on RIONET
384 default "128"
385
386config RIONET_RX_SIZE
387 int "Number of inbound queue entries"
388 depends on RIONET
389 default "128"
390
391config TUN
392 tristate "Universal TUN/TAP device driver support"
393 depends on INET
394 select CRC32
395 help
396 TUN/TAP provides packet reception and transmission for user space
397 programs. It can be viewed as a simple Point-to-Point or Ethernet
398 device, which instead of receiving packets from a physical media,
399 receives them from user space program and instead of sending packets
400 via physical media writes them to the user space program.
401
402 When a program opens /dev/net/tun, driver creates and registers
403 corresponding net device tunX or tapX. After a program closed above
404 devices, driver will automatically delete tunXX or tapXX device and
405 all routes corresponding to it.
406
407 Please read <file:Documentation/networking/tuntap.rst> for more
408 information.
409
410 To compile this driver as a module, choose M here: the module
411 will be called tun.
412
413 If you don't know what to use this for, you don't need it.
414
415config TAP
416 tristate
417 help
418 This option is selected by any driver implementing tap user space
419 interface for a virtual interface to re-use core tap functionality.
420
421config TUN_VNET_CROSS_LE
422 bool "Support for cross-endian vnet headers on little-endian kernels"
423 default n
424 help
425 This option allows TUN/TAP and MACVTAP device drivers in a
426 little-endian kernel to parse vnet headers that come from a
427 big-endian legacy virtio device.
428
429 Userspace programs can control the feature using the TUNSETVNETBE
430 and TUNGETVNETBE ioctls.
431
432 Unless you have a little-endian system hosting a big-endian virtual
433 machine with a legacy virtio NIC, you should say N.
434
435config VETH
436 tristate "Virtual ethernet pair device"
437 select PAGE_POOL
438 help
439 This device is a local ethernet tunnel. Devices are created in pairs.
440 When one end receives the packet it appears on its pair and vice
441 versa.
442
443config VIRTIO_NET
444 tristate "Virtio network driver"
445 depends on VIRTIO
446 select NET_FAILOVER
447 select DIMLIB
448 select PAGE_POOL
449 help
450 This is the virtual network driver for virtio. It can be used with
451 QEMU based VMMs (like KVM or Xen). Say Y or M.
452
453config NLMON
454 tristate "Virtual netlink monitoring device"
455 help
456 This option enables a monitoring net device for netlink skbs. The
457 purpose of this is to analyze netlink messages with packet sockets.
458 Thus applications like tcpdump will be able to see local netlink
459 messages if they tap into the netlink device, record pcaps for further
460 diagnostics, etc. This is mostly intended for developers or support
461 to debug netlink issues. If unsure, say N.
462
463config NETKIT
464 bool "BPF-programmable network device"
465 depends on BPF_SYSCALL
466 help
467 The netkit device is a virtual networking device where BPF programs
468 can be attached to the device(s) transmission routine in order to
469 implement the driver's internal logic. The device can be configured
470 to operate in L3 or L2 mode. If unsure, say N.
471
472config NET_VRF
473 tristate "Virtual Routing and Forwarding (Lite)"
474 depends on IP_MULTIPLE_TABLES
475 depends on NET_L3_MASTER_DEV
476 depends on IPV6_MULTIPLE_TABLES || IPV6=n
477 help
478 This option enables the support for mapping interfaces into VRF's. The
479 support enables VRF devices.
480
481config VSOCKMON
482 tristate "Virtual vsock monitoring device"
483 depends on VHOST_VSOCK
484 help
485 This option enables a monitoring net device for vsock sockets. It is
486 mostly intended for developers or support to debug vsock issues. If
487 unsure, say N.
488
489config MHI_NET
490 tristate "MHI network driver"
491 depends on MHI_BUS
492 help
493 This is the network driver for MHI bus. It can be used with
494 QCOM based WWAN modems for IP or QMAP/rmnet protocol (like SDX55).
495 Say Y or M.
496
497endif # NET_CORE
498
499config SUNGEM_PHY
500 tristate
501
502source "drivers/net/arcnet/Kconfig"
503
504source "drivers/atm/Kconfig"
505
506source "drivers/net/dsa/Kconfig"
507
508source "drivers/net/ethernet/Kconfig"
509
510source "drivers/net/fddi/Kconfig"
511
512source "drivers/net/ipa/Kconfig"
513
514source "drivers/net/phy/Kconfig"
515
516source "drivers/net/pse-pd/Kconfig"
517
518source "drivers/net/can/Kconfig"
519
520source "drivers/net/mctp/Kconfig"
521
522source "drivers/net/mdio/Kconfig"
523
524source "drivers/net/pcs/Kconfig"
525
526source "drivers/net/plip/Kconfig"
527
528source "drivers/net/ppp/Kconfig"
529
530source "drivers/net/slip/Kconfig"
531
532source "drivers/s390/net/Kconfig"
533
534source "drivers/net/usb/Kconfig"
535
536source "drivers/net/wireless/Kconfig"
537
538source "drivers/net/wan/Kconfig"
539
540source "drivers/net/ieee802154/Kconfig"
541
542source "drivers/net/wwan/Kconfig"
543
544config XEN_NETDEV_FRONTEND
545 tristate "Xen network device frontend driver"
546 depends on XEN
547 select XEN_XENBUS_FRONTEND
548 select PAGE_POOL
549 default y
550 help
551 This driver provides support for Xen paravirtual network
552 devices exported by a Xen network driver domain (often
553 domain 0).
554
555 The corresponding Linux backend driver is enabled by the
556 CONFIG_XEN_NETDEV_BACKEND option.
557
558 If you are compiling a kernel for use as Xen guest, you
559 should say Y here. To compile this driver as a module, chose
560 M here: the module will be called xen-netfront.
561
562config XEN_NETDEV_BACKEND
563 tristate "Xen backend network device"
564 depends on XEN_BACKEND
565 help
566 This driver allows the kernel to act as a Xen network driver
567 domain which exports paravirtual network devices to other
568 Xen domains. These devices can be accessed by any operating
569 system that implements a compatible front end.
570
571 The corresponding Linux frontend driver is enabled by the
572 CONFIG_XEN_NETDEV_FRONTEND configuration option.
573
574 The backend driver presents a standard network device
575 endpoint for each paravirtual network device to the driver
576 domain network stack. These can then be bridged or routed
577 etc in order to provide full network connectivity.
578
579 If you are compiling a kernel to run in a Xen network driver
580 domain (often this is domain 0) you should say Y here. To
581 compile this driver as a module, chose M here: the module
582 will be called xen-netback.
583
584config VMXNET3
585 tristate "VMware VMXNET3 ethernet driver"
586 depends on PCI && INET
587 depends on PAGE_SIZE_LESS_THAN_64KB
588 select PAGE_POOL
589 help
590 This driver supports VMware's vmxnet3 virtual ethernet NIC.
591 To compile this driver as a module, choose M here: the
592 module will be called vmxnet3.
593
594config FUJITSU_ES
595 tristate "FUJITSU Extended Socket Network Device driver"
596 depends on ACPI
597 help
598 This driver provides support for Extended Socket network device
599 on Extended Partitioning of FUJITSU PRIMEQUEST 2000 E2 series.
600
601source "drivers/net/thunderbolt/Kconfig"
602source "drivers/net/hyperv/Kconfig"
603
604config NETDEVSIM
605 tristate "Simulated networking device"
606 depends on DEBUG_FS
607 depends on INET
608 depends on PSAMPLE || PSAMPLE=n
609 depends on PTP_1588_CLOCK_MOCK || PTP_1588_CLOCK_MOCK=n
610 select NET_DEVLINK
611 select PAGE_POOL
612 select NET_SHAPER
613 help
614 This driver is a developer testing tool and software model that can
615 be used to test various control path networking APIs, especially
616 HW-offload related.
617
618 To compile this driver as a module, choose M here: the module
619 will be called netdevsim.
620
621config NET_FAILOVER
622 tristate "Failover driver"
623 select FAILOVER
624 help
625 This provides an automated failover mechanism via APIs to create
626 and destroy a failover master netdev and manages a primary and
627 standby slave netdevs that get registered via the generic failover
628 infrastructure. This can be used by paravirtual drivers to enable
629 an alternate low latency datapath. It also enables live migration of
630 a VM with direct attached VF by failing over to the paravirtual
631 datapath when the VF is unplugged.
632
633endif # NETDEVICES