wext: refactor

Refactor wext to
 * split out iwpriv handling
 * split out iwspy handling
 * split out procfs support
 * allow cfg80211 to have wireless extensions compat code
   w/o CONFIG_WIRELESS_EXT

After this, drivers need to
 - select WIRELESS_EXT	- for wext support
 - select WEXT_PRIV	- for iwpriv support
 - select WEXT_SPY	- for iwspy support

except cfg80211 -- which gets new hooks in wext-core.c
and can then get wext handlers without CONFIG_WIRELESS_EXT.

Wireless extensions procfs support is auto-selected
based on PROC_FS and anything that requires the wext core
(i.e. WIRELESS_EXT or CFG80211_WEXT).

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

1 files changed, 35 insertions, 15 deletions

diff --git a/net/wireless/Kconfig b/net/wireless/Kconfig
index abf7ca3f9ff..614bdcec1c8 100644
--- a/net/wireless/Kconfig
+++ b/net/wireless/Kconfig
@@ -1,3 +1,21 @@
+config WIRELESS_EXT
+	bool
+
+config WEXT_CORE
+	def_bool y
+	depends on CFG80211_WEXT || WIRELESS_EXT
+
+config WEXT_PROC
+	def_bool y
+	depends on PROC_FS
+	depends on WEXT_CORE
+
+config WEXT_SPY
+	bool
+
+config WEXT_PRIV
+	bool
+
 config CFG80211
 	tristate "cfg80211 - wireless configuration API"
 	depends on RFKILL || !RFKILL
@@ -56,6 +74,12 @@ config CFG80211_REG_DEBUG
 
 	  If unsure, say N.
 
+config CFG80211_DEFAULT_PS_VALUE
+	int
+	default 1 if CFG80211_DEFAULT_PS
+	default 0
+	depends on CFG80211
+
 config CFG80211_DEFAULT_PS
 	bool "enable powersave by default"
 	depends on CFG80211
@@ -67,14 +91,10 @@ config CFG80211_DEFAULT_PS
 	  applications instead -- they need to register their network
 	  latency requirement, see Documentation/power/pm_qos_interface.txt.
 
-config CFG80211_DEFAULT_PS_VALUE
-	int
-	default 1 if CFG80211_DEFAULT_PS
-	default 0
-
 config CFG80211_DEBUGFS
 	bool "cfg80211 DebugFS entries"
-	depends on CFG80211 && DEBUG_FS
+	depends on CFG80211
+	depends on DEBUG_FS
 	---help---
 	  You can enable this if you want to debugfs entries for cfg80211.
 
@@ -83,6 +103,7 @@ config CFG80211_DEBUGFS
 config WIRELESS_OLD_REGULATORY
 	bool "Old wireless static regulatory definitions"
 	default n
+	depends on CFG80211
 	---help---
 	  This option enables the old static regulatory information
 	  and uses it within the new framework. This option is available
@@ -94,20 +115,19 @@ config WIRELESS_OLD_REGULATORY
 
 	  Say N and if you say Y, please tell us why. The default is N.
 
-config WIRELESS_EXT
-	bool "Wireless extensions"
+config CFG80211_WEXT
+	bool "cfg80211 wireless extensions compatibility"
+	depends on CFG80211
+	select WEXT_CORE
 	default y
-	---help---
-	  This option enables the legacy wireless extensions
-	  (wireless network interface configuration via ioctls.)
-
-	  Say Y unless you've upgraded all your userspace to use
-	  nl80211 instead of wireless extensions.
+	help
+	  Enable this option if you need old userspace for wireless
+	  extensions with cfg80211-based drivers.
 
 config WIRELESS_EXT_SYSFS
 	bool "Wireless extensions sysfs files"
 	default y
-	depends on WIRELESS_EXT && SYSFS
+	depends on WEXT_CORE && SYSFS
 	help
 	  This option enables the deprecated wireless statistics
 	  files in /sys/class/net/*/wireless/. The same information