cfg80211: self-contained wext handling where possible

Finally! This is what you've all been waiting for!

This patch makes cfg80211 take care of wext emulation
_completely_ by itself, drivers that don't need things
cfg80211 doesn't do yet don't even need to be aware of
wireless extensions.
This means we can also clean up mac80211's and iwm's
Kconfig and make it possible to build them w/o wext
now!

		RIP wext.

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

12 files changed, 53 insertions, 106 deletions

diff --git a/net/mac80211/Kconfig b/net/mac80211/Kconfig
index 19a4c66e143e..7dd77b6d4c9a 100644
--- a/net/mac80211/Kconfig
+++ b/net/mac80211/Kconfig
@@ -6,7 +6,6 @@ config MAC80211
         select CRYPTO_ARC4
         select CRYPTO_AES
         select CRC32
-        select WIRELESS_EXT
         ---help---
           This option enables the hardware independent IEEE 802.11
           networking stack.
diff --git a/net/mac80211/Makefile b/net/mac80211/Makefile
index 91284a74ff91..9f3cf7129324 100644
--- a/net/mac80211/Makefile
+++ b/net/mac80211/Makefile
@@ -3,7 +3,6 @@ obj-$(CONFIG_MAC80211) += mac80211.o
 # mac80211 objects
 mac80211-y := \
         main.o \
-        wext.o \
         sta_info.o \
         wep.o \
         wpa.o \
diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h
index c6b25cb73284..aec6853cb435 100644
--- a/net/mac80211/ieee80211_i.h
+++ b/net/mac80211/ieee80211_i.h
@@ -24,7 +24,6 @@
 #include <linux/spinlock.h>
 #include <linux/etherdevice.h>
 #include <net/cfg80211.h>
-#include <net/iw_handler.h>
 #include <net/mac80211.h>
 #include "key.h"
 #include "sta_info.h"
@@ -951,9 +950,6 @@ void ieee80211_bss_info_change_notify(struct ieee80211_sub_if_data *sdata,
 void ieee80211_configure_filter(struct ieee80211_local *local);
 u32 ieee80211_reset_erp_info(struct ieee80211_sub_if_data *sdata);
 
-/* wireless extensions */
-extern const struct iw_handler_def ieee80211_iw_handler_def;
-
 /* STA code */
 void ieee80211_sta_setup_sdata(struct ieee80211_sub_if_data *sdata);
 int ieee80211_mgd_auth(struct ieee80211_sub_if_data *sdata,
diff --git a/net/mac80211/iface.c b/net/mac80211/iface.c
index d79a21105042..6c655b6547fb 100644
--- a/net/mac80211/iface.c
+++ b/net/mac80211/iface.c
@@ -684,7 +684,6 @@ static void ieee80211_if_setup(struct net_device *dev)
 {
         ether_setup(dev);
         dev->netdev_ops = &ieee80211_dataif_ops;
-        dev->wireless_handlers = &ieee80211_iw_handler_def;
         dev->destructor = free_netdev;
 }
 
diff --git a/net/mac80211/scan.c b/net/mac80211/scan.c
index 147772a2977c..45731000eb8d 100644
--- a/net/mac80211/scan.c
+++ b/net/mac80211/scan.c
@@ -18,7 +18,6 @@
 #include <linux/if_arp.h>
 #include <linux/rtnetlink.h>
 #include <net/mac80211.h>
-#include <net/iw_handler.h>
 
 #include "ieee80211_i.h"
 #include "driver-ops.h"
diff --git a/net/mac80211/wext.c b/net/mac80211/wext.c
deleted file mode 100644
index aa250c3e8fda..000000000000
--- a/net/mac80211/wext.c
+++ /dev/null
@@ -1,98 +0,0 @@
-/*
- * Copyright 2002-2005, Instant802 Networks, Inc.
- * Copyright 2005-2006, Devicescape Software, Inc.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- */
-
-#include <linux/module.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/types.h>
-#include <linux/slab.h>
-#include <linux/skbuff.h>
-#include <linux/etherdevice.h>
-#include <linux/if_arp.h>
-#include <linux/wireless.h>
-#include <net/iw_handler.h>
-#include <asm/uaccess.h>
-
-#include <net/mac80211.h>
-#include "ieee80211_i.h"
-#include "led.h"
-#include "rate.h"
-#include "wpa.h"
-#include "aes_ccm.h"
-
-
-
-/* Structures to export the Wireless Handlers */
-
-static const iw_handler ieee80211_handler[] =
-{
-        (iw_handler) NULL,                              /* SIOCSIWCOMMIT */
-        (iw_handler) cfg80211_wext_giwname,             /* SIOCGIWNAME */
-        (iw_handler) NULL,                              /* SIOCSIWNWID */
-        (iw_handler) NULL,                              /* SIOCGIWNWID */
-        (iw_handler) cfg80211_wext_siwfreq,             /* SIOCSIWFREQ */
-        (iw_handler) cfg80211_wext_giwfreq,             /* SIOCGIWFREQ */
-        (iw_handler) cfg80211_wext_siwmode,             /* SIOCSIWMODE */
-        (iw_handler) cfg80211_wext_giwmode,             /* SIOCGIWMODE */
-        (iw_handler) NULL,                              /* SIOCSIWSENS */
-        (iw_handler) NULL,                              /* SIOCGIWSENS */
-        (iw_handler) NULL /* not used */,               /* SIOCSIWRANGE */
-        (iw_handler) cfg80211_wext_giwrange,            /* SIOCGIWRANGE */
-        (iw_handler) NULL /* not used */,               /* SIOCSIWPRIV */
-        (iw_handler) NULL /* kernel code */,            /* SIOCGIWPRIV */
-        (iw_handler) NULL /* not used */,               /* SIOCSIWSTATS */
-        (iw_handler) NULL /* kernel code */,            /* SIOCGIWSTATS */
-        (iw_handler) NULL,                              /* SIOCSIWSPY */
-        (iw_handler) NULL,                              /* SIOCGIWSPY */
-        (iw_handler) NULL,                              /* SIOCSIWTHRSPY */
-        (iw_handler) NULL,                              /* SIOCGIWTHRSPY */
-        (iw_handler) cfg80211_wext_siwap,               /* SIOCSIWAP */
-        (iw_handler) cfg80211_wext_giwap,               /* SIOCGIWAP */
-        (iw_handler) cfg80211_wext_siwmlme,             /* SIOCSIWMLME */
-        (iw_handler) NULL,                              /* SIOCGIWAPLIST */
-        (iw_handler) cfg80211_wext_siwscan,             /* SIOCSIWSCAN */
-        (iw_handler) cfg80211_wext_giwscan,             /* SIOCGIWSCAN */
-        (iw_handler) cfg80211_wext_siwessid,            /* SIOCSIWESSID */
-        (iw_handler) cfg80211_wext_giwessid,            /* SIOCGIWESSID */
-        (iw_handler) NULL,                              /* SIOCSIWNICKN */
-        (iw_handler) NULL,                              /* SIOCGIWNICKN */
-        (iw_handler) NULL,                              /* -- hole -- */
-        (iw_handler) NULL,                              /* -- hole -- */
-        (iw_handler) cfg80211_wext_siwrate,             /* SIOCSIWRATE */
-        (iw_handler) cfg80211_wext_giwrate,             /* SIOCGIWRATE */
-        (iw_handler) cfg80211_wext_siwrts,              /* SIOCSIWRTS */
-        (iw_handler) cfg80211_wext_giwrts,              /* SIOCGIWRTS */
-        (iw_handler) cfg80211_wext_siwfrag,             /* SIOCSIWFRAG */
-        (iw_handler) cfg80211_wext_giwfrag,             /* SIOCGIWFRAG */
-        (iw_handler) cfg80211_wext_siwtxpower,          /* SIOCSIWTXPOW */
-        (iw_handler) cfg80211_wext_giwtxpower,          /* SIOCGIWTXPOW */
-        (iw_handler) cfg80211_wext_siwretry,            /* SIOCSIWRETRY */
-        (iw_handler) cfg80211_wext_giwretry,            /* SIOCGIWRETRY */
-        (iw_handler) cfg80211_wext_siwencode,           /* SIOCSIWENCODE */
-        (iw_handler) cfg80211_wext_giwencode,           /* SIOCGIWENCODE */
-        (iw_handler) cfg80211_wext_siwpower,            /* SIOCSIWPOWER */
-        (iw_handler) cfg80211_wext_giwpower,            /* SIOCGIWPOWER */
-        (iw_handler) NULL,                              /* -- hole -- */
-        (iw_handler) NULL,                              /* -- hole -- */
-        (iw_handler) cfg80211_wext_siwgenie,            /* SIOCSIWGENIE */
-        (iw_handler) NULL,                              /* SIOCGIWGENIE */
-        (iw_handler) cfg80211_wext_siwauth,             /* SIOCSIWAUTH */
-        (iw_handler) cfg80211_wext_giwauth,             /* SIOCGIWAUTH */
-        (iw_handler) cfg80211_wext_siwencodeext,        /* SIOCSIWENCODEEXT */
-        (iw_handler) NULL,                              /* SIOCGIWENCODEEXT */
-        (iw_handler) NULL,                              /* SIOCSIWPMKSA */
-        (iw_handler) NULL,                              /* -- hole -- */
-};
-
-const struct iw_handler_def ieee80211_iw_handler_def =
-{
-        .num_standard   = ARRAY_SIZE(ieee80211_handler),
-        .standard       = (iw_handler *) ieee80211_handler,
-        .get_wireless_stats = cfg80211_wireless_stats,
-};
diff --git a/net/wireless/core.c b/net/wireless/core.c
index 442c9f389799..f9fee65dc06a 100644
--- a/net/wireless/core.c
+++ b/net/wireless/core.c
@@ -19,6 +19,7 @@
 #include "core.h"
 #include "sysfs.h"
 #include "debugfs.h"
+#include "wext-compat.h"
 
 /* name for sysfs, %d is appended */
 #define PHY_NAME "phy"
@@ -665,6 +666,8 @@ static int cfg80211_netdev_notifier_call(struct notifier_block * nb,
                 wdev->sme_state = CFG80211_SME_IDLE;
                 mutex_unlock(&rdev->devlist_mtx);
 #ifdef CONFIG_WIRELESS_EXT
+                if (!dev->wireless_handlers)
+                        dev->wireless_handlers = &cfg80211_wext_handler;
                 wdev->wext.default_key = -1;
                 wdev->wext.default_mgmt_key = -1;
                 wdev->wext.connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC;
diff --git a/net/wireless/mlme.c b/net/wireless/mlme.c
index 30058a80d7af..097a87d7bae1 100644
--- a/net/wireless/mlme.c
+++ b/net/wireless/mlme.c
@@ -8,7 +8,9 @@
 #include <linux/module.h>
 #include <linux/netdevice.h>
 #include <linux/nl80211.h>
+#include <linux/wireless.h>
 #include <net/cfg80211.h>
+#include <net/iw_handler.h>
 #include "core.h"
 #include "nl80211.h"
 
diff --git a/net/wireless/scan.c b/net/wireless/scan.c
index 2a2683f6c04a..67714d7ed5b4 100644
--- a/net/wireless/scan.c
+++ b/net/wireless/scan.c
@@ -14,6 +14,7 @@
 #include <net/iw_handler.h>
 #include "core.h"
 #include "nl80211.h"
+#include "wext-compat.h"
 
 #define IEEE80211_SCAN_RESULT_EXPIRE    (15 * HZ)
 
diff --git a/net/wireless/sme.c b/net/wireless/sme.c
index a19741097989..d2b5d4ce0a00 100644
--- a/net/wireless/sme.c
+++ b/net/wireless/sme.c
@@ -8,6 +8,8 @@
 #include <linux/etherdevice.h>
 #include <linux/if_arp.h>
 #include <linux/workqueue.h>
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
 #include <net/cfg80211.h>
 #include <net/rtnetlink.h>
 #include "nl80211.h"
diff --git a/net/wireless/wext-compat.c b/net/wireless/wext-compat.c
index 083e4c33d95d..e4e90e249bab 100644
--- a/net/wireless/wext-compat.c
+++ b/net/wireless/wext-compat.c
@@ -1397,3 +1397,43 @@ int cfg80211_wext_giwessid(struct net_device *dev,
         }
 }
 EXPORT_SYMBOL_GPL(cfg80211_wext_giwessid);
+
+static const iw_handler cfg80211_handlers[] = {
+        [IW_IOCTL_IDX(SIOCGIWNAME)]     = (iw_handler) cfg80211_wext_giwname,
+        [IW_IOCTL_IDX(SIOCSIWFREQ)]     = (iw_handler) cfg80211_wext_siwfreq,
+        [IW_IOCTL_IDX(SIOCGIWFREQ)]     = (iw_handler) cfg80211_wext_giwfreq,
+        [IW_IOCTL_IDX(SIOCSIWMODE)]     = (iw_handler) cfg80211_wext_siwmode,
+        [IW_IOCTL_IDX(SIOCGIWMODE)]     = (iw_handler) cfg80211_wext_giwmode,
+        [IW_IOCTL_IDX(SIOCGIWRANGE)]    = (iw_handler) cfg80211_wext_giwrange,
+        [IW_IOCTL_IDX(SIOCSIWAP)]       = (iw_handler) cfg80211_wext_siwap,
+        [IW_IOCTL_IDX(SIOCGIWAP)]       = (iw_handler) cfg80211_wext_giwap,
+        [IW_IOCTL_IDX(SIOCSIWMLME)]     = (iw_handler) cfg80211_wext_siwmlme,
+        [IW_IOCTL_IDX(SIOCSIWSCAN)]     = (iw_handler) cfg80211_wext_siwscan,
+        [IW_IOCTL_IDX(SIOCGIWSCAN)]     = (iw_handler) cfg80211_wext_giwscan,
+        [IW_IOCTL_IDX(SIOCSIWESSID)]    = (iw_handler) cfg80211_wext_siwessid,
+        [IW_IOCTL_IDX(SIOCGIWESSID)]    = (iw_handler) cfg80211_wext_giwessid,
+        [IW_IOCTL_IDX(SIOCSIWRATE)]     = (iw_handler) cfg80211_wext_siwrate,
+        [IW_IOCTL_IDX(SIOCGIWRATE)]     = (iw_handler) cfg80211_wext_giwrate,
+        [IW_IOCTL_IDX(SIOCSIWRTS)]      = (iw_handler) cfg80211_wext_siwrts,
+        [IW_IOCTL_IDX(SIOCGIWRTS)]      = (iw_handler) cfg80211_wext_giwrts,
+        [IW_IOCTL_IDX(SIOCSIWFRAG)]     = (iw_handler) cfg80211_wext_siwfrag,
+        [IW_IOCTL_IDX(SIOCGIWFRAG)]     = (iw_handler) cfg80211_wext_giwfrag,
+        [IW_IOCTL_IDX(SIOCSIWTXPOW)]    = (iw_handler) cfg80211_wext_siwtxpower,
+        [IW_IOCTL_IDX(SIOCGIWTXPOW)]    = (iw_handler) cfg80211_wext_giwtxpower,
+        [IW_IOCTL_IDX(SIOCSIWRETRY)]    = (iw_handler) cfg80211_wext_siwretry,
+        [IW_IOCTL_IDX(SIOCGIWRETRY)]    = (iw_handler) cfg80211_wext_giwretry,
+        [IW_IOCTL_IDX(SIOCSIWENCODE)]   = (iw_handler) cfg80211_wext_siwencode,
+        [IW_IOCTL_IDX(SIOCGIWENCODE)]   = (iw_handler) cfg80211_wext_giwencode,
+        [IW_IOCTL_IDX(SIOCSIWPOWER)]    = (iw_handler) cfg80211_wext_siwpower,
+        [IW_IOCTL_IDX(SIOCGIWPOWER)]    = (iw_handler) cfg80211_wext_giwpower,
+        [IW_IOCTL_IDX(SIOCSIWGENIE)]    = (iw_handler) cfg80211_wext_siwgenie,
+        [IW_IOCTL_IDX(SIOCSIWAUTH)]     = (iw_handler) cfg80211_wext_siwauth,
+        [IW_IOCTL_IDX(SIOCGIWAUTH)]     = (iw_handler) cfg80211_wext_giwauth,
+        [IW_IOCTL_IDX(SIOCSIWENCODEEXT)]= (iw_handler) cfg80211_wext_siwencodeext,
+};
+
+const struct iw_handler_def cfg80211_wext_handler = {
+        .num_standard           = ARRAY_SIZE(cfg80211_handlers),
+        .standard               = cfg80211_handlers,
+        .get_wireless_stats = cfg80211_wireless_stats,
+};
diff --git a/net/wireless/wext-compat.h b/net/wireless/wext-compat.h
index c0310d93c2e5..9a3774749589 100644
--- a/net/wireless/wext-compat.h
+++ b/net/wireless/wext-compat.h
@@ -1,6 +1,9 @@
 #ifndef __WEXT_COMPAT
 #define __WEXT_COMPAT
 
+#include <net/iw_handler.h>
+#include <linux/wireless.h>
+
 int cfg80211_ibss_wext_siwfreq(struct net_device *dev,
                                struct iw_request_info *info,
                                struct iw_freq *freq, char *extra);
@@ -42,4 +45,6 @@ int cfg80211_mgd_wext_giwessid(struct net_device *dev,
 struct ieee80211_channel *cfg80211_wext_freq(struct wiphy *wiphy,
                                              struct iw_freq *freq);
 
+
+extern const struct iw_handler_def cfg80211_wext_handler;
 #endif /* __WEXT_COMPAT */