net/wireless/Kconfig

   1 # SPDX-License-Identifier: GPL-2.0-only
   2 config WIRELESS_EXT
   3         bool
   4
   5 config WEXT_CORE
   6         def_bool y
   7         depends on CFG80211_WEXT || WIRELESS_EXT
   8
   9 config WEXT_PROC
  10         def_bool y
  11         depends on PROC_FS
  12         depends on WEXT_CORE
  13
  14 config WEXT_SPY
  15         bool
  16
  17 config WEXT_PRIV
  18         bool
  19
  20 config CFG80211
  21         tristate "cfg80211 - wireless configuration API"
  22         depends on RFKILL || !RFKILL
  23         select FW_LOADER
  24         # may need to update this when certificates are changed and are
  25         # using a different algorithm, though right now they shouldn't
  26         # (this is here rather than below to allow it to be a module)
  27         select CRYPTO_SHA256 if CFG80211_USE_KERNEL_REGDB_KEYS
  28         ---help---
  29           cfg80211 is the Linux wireless LAN (802.11) configuration API.
  30           Enable this if you have a wireless device.
  31
  32           For more information refer to documentation on the wireless wiki:
  33
  34           http://wireless.kernel.org/en/developers/Documentation/cfg80211
  35
  36           When built as a module it will be called cfg80211.
  37
  38 if CFG80211
  39
  40 config NL80211_TESTMODE
  41         bool "nl80211 testmode command"
  42         help
  43           The nl80211 testmode command helps implementing things like
  44           factory calibration or validation tools for wireless chips.
  45
  46           Select this option ONLY for kernels that are specifically
  47           built for such purposes.
  48
  49           Debugging tools that are supposed to end up in the hands of
  50           users should better be implemented with debugfs.
  51
  52           Say N.
  53
  54 config CFG80211_DEVELOPER_WARNINGS
  55         bool "enable developer warnings"
  56         default n
  57         help
  58           This option enables some additional warnings that help
  59           cfg80211 developers and driver developers, but beware that
  60           they can also trigger due to races with userspace.
  61
  62           For example, when a driver reports that it was disconnected
  63           from the AP, but the user disconnects manually at the same
  64           time, the warning might trigger spuriously due to races.
  65
  66           Say Y only if you are developing cfg80211 or a driver based
  67           on it (or mac80211).
  68
  69
  70 config CFG80211_CERTIFICATION_ONUS
  71         bool "cfg80211 certification onus"
  72         depends on EXPERT
  73         default n
  74         ---help---
  75           You should disable this option unless you are both capable
  76           and willing to ensure your system will remain regulatory
  77           compliant with the features available under this option.
  78           Some options may still be under heavy development and
  79           for whatever reason regulatory compliance has not or
  80           cannot yet be verified. Regulatory verification may at
  81           times only be possible until you have the final system
  82           in place.
  83
  84           This option should only be enabled by system integrators
  85           or distributions that have done work necessary to ensure
  86           regulatory certification on the system with the enabled
  87           features. Alternatively you can enable this option if
  88           you are a wireless researcher and are working in a controlled
  89           and approved environment by your local regulatory agency.
  90
  91 config CFG80211_REQUIRE_SIGNED_REGDB
  92         bool "require regdb signature" if CFG80211_CERTIFICATION_ONUS
  93         default y
  94         select SYSTEM_DATA_VERIFICATION
  95         help
  96           Require that in addition to the "regulatory.db" file a
  97           "regulatory.db.p7s" can be loaded with a valid PKCS#7
  98           signature for the regulatory.db file made by one of the
  99           keys in the certs/ directory.
 100
 101 config CFG80211_USE_KERNEL_REGDB_KEYS
 102         bool "allow regdb keys shipped with the kernel" if CFG80211_CERTIFICATION_ONUS
 103         default y
 104         depends on CFG80211_REQUIRE_SIGNED_REGDB
 105         help
 106           Allow the regulatory database to be signed by one of the keys for
 107           which certificates are part of the kernel sources
 108           (in net/wireless/certs/).
 109
 110           This is currently only Seth Forshee's key, who is the regulatory
 111           database maintainer.
 112
 113 config CFG80211_EXTRA_REGDB_KEYDIR
 114         string "additional regdb key directory" if CFG80211_CERTIFICATION_ONUS
 115         depends on CFG80211_REQUIRE_SIGNED_REGDB
 116         help
 117           If selected, point to a directory with DER-encoded X.509
 118           certificates like in the kernel sources (net/wireless/certs/)
 119           that shall be accepted for a signed regulatory database.
 120
 121           Note that you need to also select the correct CRYPTO_<hash> modules
 122           for your certificates, and if cfg80211 is built-in they also must be.
 123
 124 config CFG80211_REG_CELLULAR_HINTS
 125         bool "cfg80211 regulatory support for cellular base station hints"
 126         depends on CFG80211_CERTIFICATION_ONUS
 127         ---help---
 128           This option enables support for parsing regulatory hints
 129           from cellular base stations. If enabled and at least one driver
 130           claims support for parsing cellular base station hints the
 131           regulatory core will allow and parse these regulatory hints.
 132           The regulatory core will only apply these regulatory hints on
 133           drivers that support this feature. You should only enable this
 134           feature if you have tested and validated this feature on your
 135           systems.
 136
 137 config CFG80211_REG_RELAX_NO_IR
 138         bool "cfg80211 support for NO_IR relaxation"
 139         depends on CFG80211_CERTIFICATION_ONUS
 140         ---help---
 141          This option enables support for relaxation of the NO_IR flag for
 142          situations that certain regulatory bodies have provided clarifications
 143          on how relaxation can occur. This feature has an inherent dependency on
 144          userspace features which must have been properly tested and as such is
 145          not enabled by default.
 146
 147          A relaxation feature example is allowing the operation of a P2P group
 148          owner (GO) on channels marked with NO_IR if there is an additional BSS
 149          interface which associated to an AP which userspace assumes or confirms
 150          to be an authorized master, i.e., with radar detection support and DFS
 151          capabilities. However, note that in order to not create daisy chain
 152          scenarios, this relaxation is not allowed in cases where the BSS client
 153          is associated to P2P GO and in addition the P2P GO instantiated on
 154          a channel due to this relaxation should not allow connection from
 155          non P2P clients.
 156
 157          The regulatory core will apply these relaxations only for drivers that
 158          support this feature by declaring the appropriate channel flags and
 159          capabilities in their registration flow.
 160
 161 config CFG80211_DEFAULT_PS
 162         bool "enable powersave by default"
 163         default y
 164         help
 165           This option enables powersave mode by default.
 166
 167           If this causes your applications to misbehave you should fix your
 168           applications instead -- they need to register their network
 169           latency requirement, see Documentation/power/pm_qos_interface.txt.
 170
 171 config CFG80211_DEBUGFS
 172         bool "cfg80211 DebugFS entries"
 173         depends on DEBUG_FS
 174         ---help---
 175           You can enable this if you want debugfs entries for cfg80211.
 176
 177           If unsure, say N.
 178
 179 config CFG80211_CRDA_SUPPORT
 180         bool "support CRDA" if EXPERT
 181         default y
 182         help
 183           You should enable this option unless you know for sure you have no
 184           need for it, for example when using internal regdb (above) or the
 185           database loaded as a firmware file.
 186
 187           If unsure, say Y.
 188
 189 config CFG80211_WEXT
 190         bool "cfg80211 wireless extensions compatibility" if !CFG80211_WEXT_EXPORT
 191         select WEXT_CORE
 192         default y if CFG80211_WEXT_EXPORT
 193         help
 194           Enable this option if you need old userspace for wireless
 195           extensions with cfg80211-based drivers.
 196
 197 config CFG80211_WEXT_EXPORT
 198         bool
 199         help
 200           Drivers should select this option if they require cfg80211's
 201           wext compatibility symbols to be exported.
 202
 203 endif # CFG80211
 204
 205 config LIB80211
 206         tristate
 207         default n
 208         help
 209           This options enables a library of common routines used
 210           by IEEE802.11 wireless LAN drivers.
 211
 212           Drivers should select this themselves if needed.
 213
 214 config LIB80211_CRYPT_WEP
 215         tristate
 216
 217 config LIB80211_CRYPT_CCMP
 218         tristate
 219
 220 config LIB80211_CRYPT_TKIP
 221         tristate
 222
 223 config LIB80211_DEBUG
 224         bool "lib80211 debugging messages"
 225         depends on LIB80211
 226         default n
 227         ---help---
 228           You can enable this if you want verbose debugging messages
 229           from lib80211.
 230
 231           If unsure, say N.