1 # SPDX-License-Identifier: GPL-2.0-only
7 depends on CFG80211_WEXT || WIRELESS_EXT
21 tristate "cfg80211 - wireless configuration API"
22 depends on RFKILL || !RFKILL
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
29 cfg80211 is the Linux wireless LAN (802.11) configuration API.
30 Enable this if you have a wireless device.
32 For more information refer to documentation on the wireless wiki:
34 https://wireless.wiki.kernel.org/en/developers/Documentation/cfg80211
36 When built as a module it will be called cfg80211.
40 config NL80211_TESTMODE
41 bool "nl80211 testmode command"
43 The nl80211 testmode command helps implementing things like
44 factory calibration or validation tools for wireless chips.
46 Select this option ONLY for kernels that are specifically
47 built for such purposes.
49 Debugging tools that are supposed to end up in the hands of
50 users should better be implemented with debugfs.
54 config CFG80211_DEVELOPER_WARNINGS
55 bool "enable developer warnings"
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.
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.
66 Say Y only if you are developing cfg80211 or a driver based
70 config CFG80211_CERTIFICATION_ONUS
71 bool "cfg80211 certification onus"
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
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.
91 config CFG80211_REQUIRE_SIGNED_REGDB
92 bool "require regdb signature" if CFG80211_CERTIFICATION_ONUS
94 select SYSTEM_DATA_VERIFICATION
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.
101 config CFG80211_USE_KERNEL_REGDB_KEYS
102 bool "allow regdb keys shipped with the kernel" if CFG80211_CERTIFICATION_ONUS
104 depends on CFG80211_REQUIRE_SIGNED_REGDB
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/).
110 This is currently only Seth Forshee's key, who is the regulatory
113 config CFG80211_EXTRA_REGDB_KEYDIR
114 string "additional regdb key directory" if CFG80211_CERTIFICATION_ONUS
115 depends on CFG80211_REQUIRE_SIGNED_REGDB
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.
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.
124 config CFG80211_REG_CELLULAR_HINTS
125 bool "cfg80211 regulatory support for cellular base station hints"
126 depends on CFG80211_CERTIFICATION_ONUS
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
137 config CFG80211_REG_RELAX_NO_IR
138 bool "cfg80211 support for NO_IR relaxation"
139 depends on CFG80211_CERTIFICATION_ONUS
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.
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
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.
161 config CFG80211_DEFAULT_PS
162 bool "enable powersave by default"
165 This option enables powersave mode by default.
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.rst.
171 config CFG80211_DEBUGFS
172 bool "cfg80211 DebugFS entries"
175 You can enable this if you want debugfs entries for cfg80211.
179 config CFG80211_CRDA_SUPPORT
180 bool "support CRDA" if EXPERT
183 You should enable this option unless you know for sure you have no
184 need for it, for example when using the regulatory database loaded as
190 bool "cfg80211 wireless extensions compatibility" if !CFG80211_WEXT_EXPORT
192 default y if CFG80211_WEXT_EXPORT
194 Enable this option if you need old userspace for wireless
195 extensions with cfg80211-based drivers.
197 config CFG80211_WEXT_EXPORT
200 Drivers should select this option if they require cfg80211's
201 wext compatibility symbols to be exported.
209 This options enables a library of common routines used
210 by IEEE802.11 wireless LAN drivers.
212 Drivers should select this themselves if needed.
214 config LIB80211_CRYPT_WEP
216 select CRYPTO_LIB_ARC4
218 config LIB80211_CRYPT_CCMP
224 config LIB80211_CRYPT_TKIP
226 select CRYPTO_LIB_ARC4
228 config LIB80211_DEBUG
229 bool "lib80211 debugging messages"
233 You can enable this if you want verbose debugging messages