net/xfrm/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 #
   3 # XFRM configuration
   4 #
   5 config XFRM
   6         bool
   7         depends on INET
   8         select GRO_CELLS
   9         select SKB_EXTENSIONS
  10
  11 config XFRM_OFFLOAD
  12         bool
  13
  14 config XFRM_ALGO
  15         tristate
  16         select XFRM
  17         select CRYPTO
  18         select CRYPTO_HASH
  19         select CRYPTO_SKCIPHER
  20
  21 if INET
  22 config XFRM_USER
  23         tristate "Transformation user configuration interface"
  24         select XFRM_ALGO
  25         help
  26           Support for Transformation(XFRM) user configuration interface
  27           like IPsec used by native Linux tools.
  28
  29           If unsure, say Y.
  30
  31 config XFRM_USER_COMPAT
  32         tristate "Compatible ABI support"
  33         depends on XFRM_USER && COMPAT_FOR_U64_ALIGNMENT && \
  34                 HAVE_EFFICIENT_UNALIGNED_ACCESS
  35         select WANT_COMPAT_NETLINK_MESSAGES
  36         help
  37           Transformation(XFRM) user configuration interface like IPsec
  38           used by compatible Linux applications.
  39
  40           If unsure, say N.
  41
  42 config XFRM_INTERFACE
  43         tristate "Transformation virtual interface"
  44         depends on XFRM && IPV6
  45         help
  46           This provides a virtual interface to route IPsec traffic.
  47
  48           If unsure, say N.
  49
  50 config XFRM_SUB_POLICY
  51         bool "Transformation sub policy support"
  52         depends on XFRM
  53         help
  54           Support sub policy for developers. By using sub policy with main
  55           one, two policies can be applied to the same packet at once.
  56           Policy which lives shorter time in kernel should be a sub.
  57
  58           If unsure, say N.
  59
  60 config XFRM_MIGRATE
  61         bool "Transformation migrate database"
  62         depends on XFRM
  63         help
  64           A feature to update locator(s) of a given IPsec security
  65           association dynamically.  This feature is required, for
  66           instance, in a Mobile IPv6 environment with IPsec configuration
  67           where mobile nodes change their attachment point to the Internet.
  68
  69           If unsure, say N.
  70
  71 config XFRM_STATISTICS
  72         bool "Transformation statistics"
  73         depends on XFRM && PROC_FS
  74         help
  75           This statistics is not a SNMP/MIB specification but shows
  76           statistics about transformation error (or almost error) factor
  77           at packet processing for developer.
  78
  79           If unsure, say N.
  80
  81 # This option selects XFRM_ALGO along with the AH authentication algorithms that
  82 # RFC 8221 lists as MUST be implemented.
  83 config XFRM_AH
  84         tristate
  85         select XFRM_ALGO
  86         select CRYPTO
  87         select CRYPTO_HMAC
  88         select CRYPTO_SHA256
  89
  90 # This option selects XFRM_ALGO along with the ESP encryption and authentication
  91 # algorithms that RFC 8221 lists as MUST be implemented.
  92 config XFRM_ESP
  93         tristate
  94         select XFRM_ALGO
  95         select CRYPTO
  96         select CRYPTO_AES
  97         select CRYPTO_AUTHENC
  98         select CRYPTO_CBC
  99         select CRYPTO_ECHAINIV
 100         select CRYPTO_GCM
 101         select CRYPTO_HMAC
 102         select CRYPTO_SEQIV
 103         select CRYPTO_SHA256
 104
 105 config XFRM_IPCOMP
 106         tristate
 107         select XFRM_ALGO
 108         select CRYPTO
 109         select CRYPTO_DEFLATE
 110
 111 config NET_KEY
 112         tristate "PF_KEY sockets"
 113         select XFRM_ALGO
 114         help
 115           PF_KEYv2 socket family, compatible to KAME ones.
 116           They are required if you are going to use IPsec tools ported
 117           from KAME.
 118
 119           Say Y unless you know what you are doing.
 120
 121 config NET_KEY_MIGRATE
 122         bool "PF_KEY MIGRATE"
 123         depends on NET_KEY
 124         select XFRM_MIGRATE
 125         help
 126           Add a PF_KEY MIGRATE message to PF_KEYv2 socket family.
 127           The PF_KEY MIGRATE message is used to dynamically update
 128           locator(s) of a given IPsec security association.
 129           This feature is required, for instance, in a Mobile IPv6
 130           environment with IPsec configuration where mobile nodes
 131           change their attachment point to the Internet.  Detail
 132           information can be found in the internet-draft
 133           <draft-sugimoto-mip6-pfkey-migrate>.
 134
 135           If unsure, say N.
 136
 137 config XFRM_ESPINTCP
 138         bool
 139
 140 endif # INET