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| -rw-r--r-- | net/ipv6/Kconfig | 331 |
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diff --git a/net/ipv6/Kconfig b/net/ipv6/Kconfig new file mode 100644 index 000000000..747f56e0c --- /dev/null +++ b/net/ipv6/Kconfig @@ -0,0 +1,331 @@ +# SPDX-License-Identifier: GPL-2.0-only +# +# IPv6 configuration +# + +# IPv6 as module will cause a CRASH if you try to unload it +menuconfig IPV6 + tristate "The IPv6 protocol" + default y + help + Support for IP version 6 (IPv6). + + For general information about IPv6, see + <https://en.wikipedia.org/wiki/IPv6>. + For specific information about IPv6 under Linux, see + Documentation/networking/ipv6.rst and read the HOWTO at + <https://www.tldp.org/HOWTO/Linux+IPv6-HOWTO/> + + To compile this protocol support as a module, choose M here: the + module will be called ipv6. + +if IPV6 + +config IPV6_ROUTER_PREF + bool "IPv6: Router Preference (RFC 4191) support" + help + Router Preference is an optional extension to the Router + Advertisement message which improves the ability of hosts + to pick an appropriate router, especially when the hosts + are placed in a multi-homed network. + + If unsure, say N. + +config IPV6_ROUTE_INFO + bool "IPv6: Route Information (RFC 4191) support" + depends on IPV6_ROUTER_PREF + help + Support of Route Information. + + If unsure, say N. + +config IPV6_OPTIMISTIC_DAD + bool "IPv6: Enable RFC 4429 Optimistic DAD" + help + Support for optimistic Duplicate Address Detection. It allows for + autoconfigured addresses to be used more quickly. + + If unsure, say N. + +config INET6_AH + tristate "IPv6: AH transformation" + select XFRM_AH + help + Support for IPsec AH (Authentication Header). + + AH can be used with various authentication algorithms. Besides + enabling AH support itself, this option enables the generic + implementations of the algorithms that RFC 8221 lists as MUST be + implemented. If you need any other algorithms, you'll need to enable + them in the crypto API. You should also enable accelerated + implementations of any needed algorithms when available. + + If unsure, say Y. + +config INET6_ESP + tristate "IPv6: ESP transformation" + select XFRM_ESP + help + Support for IPsec ESP (Encapsulating Security Payload). + + ESP can be used with various encryption and authentication algorithms. + Besides enabling ESP support itself, this option enables the generic + implementations of the algorithms that RFC 8221 lists as MUST be + implemented. If you need any other algorithms, you'll need to enable + them in the crypto API. You should also enable accelerated + implementations of any needed algorithms when available. + + If unsure, say Y. + +config INET6_ESP_OFFLOAD + tristate "IPv6: ESP transformation offload" + depends on INET6_ESP + select XFRM_OFFLOAD + default n + help + Support for ESP transformation offload. This makes sense + only if this system really does IPsec and want to do it + with high throughput. A typical desktop system does not + need it, even if it does IPsec. + + If unsure, say N. + +config INET6_ESPINTCP + bool "IPv6: ESP in TCP encapsulation (RFC 8229)" + depends on XFRM && INET6_ESP + select STREAM_PARSER + select NET_SOCK_MSG + select XFRM_ESPINTCP + help + Support for RFC 8229 encapsulation of ESP and IKE over + TCP/IPv6 sockets. + + If unsure, say N. + +config INET6_IPCOMP + tristate "IPv6: IPComp transformation" + select INET6_XFRM_TUNNEL + select XFRM_IPCOMP + help + Support for IP Payload Compression Protocol (IPComp) (RFC3173), + typically needed for IPsec. + + If unsure, say Y. + +config IPV6_MIP6 + tristate "IPv6: Mobility" + select XFRM + help + Support for IPv6 Mobility described in RFC 3775. + + If unsure, say N. + +config IPV6_ILA + tristate "IPv6: Identifier Locator Addressing (ILA)" + depends on NETFILTER + select DST_CACHE + select LWTUNNEL + help + Support for IPv6 Identifier Locator Addressing (ILA). + + ILA is a mechanism to do network virtualization without + encapsulation. The basic concept of ILA is that we split an + IPv6 address into a 64 bit locator and 64 bit identifier. The + identifier is the identity of an entity in communication + ("who") and the locator expresses the location of the + entity ("where"). + + ILA can be configured using the "encap ila" option with + "ip -6 route" command. ILA is described in + https://tools.ietf.org/html/draft-herbert-nvo3-ila-00. + + If unsure, say N. + +config INET6_XFRM_TUNNEL + tristate + select INET6_TUNNEL + default n + +config INET6_TUNNEL + tristate + default n + +config IPV6_VTI +tristate "Virtual (secure) IPv6: tunneling" + select IPV6_TUNNEL + select NET_IP_TUNNEL + select XFRM + help + Tunneling means encapsulating data of one protocol type within + another protocol and sending it over a channel that understands the + encapsulating protocol. This can be used with xfrm mode tunnel to give + the notion of a secure tunnel for IPSEC and then use routing protocol + on top. + +config IPV6_SIT + tristate "IPv6: IPv6-in-IPv4 tunnel (SIT driver)" + select INET_TUNNEL + select NET_IP_TUNNEL + select IPV6_NDISC_NODETYPE + default y + help + Tunneling means encapsulating data of one protocol type within + another protocol and sending it over a channel that understands the + encapsulating protocol. This driver implements encapsulation of IPv6 + into IPv4 packets. This is useful if you want to connect two IPv6 + networks over an IPv4-only path. + + Saying M here will produce a module called sit. If unsure, say Y. + +config IPV6_SIT_6RD + bool "IPv6: IPv6 Rapid Deployment (6RD)" + depends on IPV6_SIT + default n + help + IPv6 Rapid Deployment (6rd; draft-ietf-softwire-ipv6-6rd) builds upon + mechanisms of 6to4 (RFC3056) to enable a service provider to rapidly + deploy IPv6 unicast service to IPv4 sites to which it provides + customer premise equipment. Like 6to4, it utilizes stateless IPv6 in + IPv4 encapsulation in order to transit IPv4-only network + infrastructure. Unlike 6to4, a 6rd service provider uses an IPv6 + prefix of its own in place of the fixed 6to4 prefix. + + With this option enabled, the SIT driver offers 6rd functionality by + providing additional ioctl API to configure the IPv6 Prefix for in + stead of static 2002::/16 for 6to4. + + If unsure, say N. + +config IPV6_NDISC_NODETYPE + bool + +config IPV6_TUNNEL + tristate "IPv6: IP-in-IPv6 tunnel (RFC2473)" + select INET6_TUNNEL + select DST_CACHE + select GRO_CELLS + help + Support for IPv6-in-IPv6 and IPv4-in-IPv6 tunnels described in + RFC 2473. + + If unsure, say N. + +config IPV6_GRE + tristate "IPv6: GRE tunnel" + select IPV6_TUNNEL + select NET_IP_TUNNEL + depends on NET_IPGRE_DEMUX + help + Tunneling means encapsulating data of one protocol type within + another protocol and sending it over a channel that understands the + encapsulating protocol. This particular tunneling driver implements + GRE (Generic Routing Encapsulation) and at this time allows + encapsulating of IPv4 or IPv6 over existing IPv6 infrastructure. + This driver is useful if the other endpoint is a Cisco router: Cisco + likes GRE much better than the other Linux tunneling driver ("IP + tunneling" above). In addition, GRE allows multicast redistribution + through the tunnel. + + Saying M here will produce a module called ip6_gre. If unsure, say N. + +config IPV6_FOU + tristate + default NET_FOU && IPV6 + +config IPV6_FOU_TUNNEL + tristate + default NET_FOU_IP_TUNNELS && IPV6_FOU + select IPV6_TUNNEL + +config IPV6_MULTIPLE_TABLES + bool "IPv6: Multiple Routing Tables" + select FIB_RULES + help + Support multiple routing tables. + +config IPV6_SUBTREES + bool "IPv6: source address based routing" + depends on IPV6_MULTIPLE_TABLES + help + Enable routing by source address or prefix. + + The destination address is still the primary routing key, so mixing + normal and source prefix specific routes in the same routing table + may sometimes lead to unintended routing behavior. This can be + avoided by defining different routing tables for the normal and + source prefix specific routes. + + If unsure, say N. + +config IPV6_MROUTE + bool "IPv6: multicast routing" + depends on IPV6 + select IP_MROUTE_COMMON + help + Support for IPv6 multicast forwarding. + If unsure, say N. + +config IPV6_MROUTE_MULTIPLE_TABLES + bool "IPv6: multicast policy routing" + depends on IPV6_MROUTE + select FIB_RULES + help + Normally, a multicast router runs a userspace daemon and decides + what to do with a multicast packet based on the source and + destination addresses. If you say Y here, the multicast router + will also be able to take interfaces and packet marks into + account and run multiple instances of userspace daemons + simultaneously, each one handling a single table. + + If unsure, say N. + +config IPV6_PIMSM_V2 + bool "IPv6: PIM-SM version 2 support" + depends on IPV6_MROUTE + help + Support for IPv6 PIM multicast routing protocol PIM-SMv2. + If unsure, say N. + +config IPV6_SEG6_LWTUNNEL + bool "IPv6: Segment Routing Header encapsulation support" + depends on IPV6 + select LWTUNNEL + select DST_CACHE + select IPV6_MULTIPLE_TABLES + help + Support for encapsulation of packets within an outer IPv6 + header and a Segment Routing Header using the lightweight + tunnels mechanism. Also enable support for advanced local + processing of SRv6 packets based on their active segment. + + If unsure, say N. + +config IPV6_SEG6_HMAC + bool "IPv6: Segment Routing HMAC support" + depends on IPV6 + select CRYPTO + select CRYPTO_HMAC + select CRYPTO_SHA1 + select CRYPTO_SHA256 + help + Support for HMAC signature generation and verification + of SR-enabled packets. + + If unsure, say N. + +config IPV6_SEG6_BPF + def_bool y + depends on IPV6_SEG6_LWTUNNEL + depends on IPV6 = y + +config IPV6_RPL_LWTUNNEL + bool "IPv6: RPL Source Routing Header support" + depends on IPV6 + select LWTUNNEL + help + Support for RFC6554 RPL Source Routing Header using the lightweight + tunnels mechanism. + + If unsure, say N. + +endif # IPV6 |