mac80211: always use wpa_supplicant for client connections (patch by Stijn Tintel)

Since client mode in mac80211is unreliable without using wpa_supplicant,
it would be better to enable wpa_supplicant by default.

With this patch, wpa_supplicant will always be used for mac80211-based
drivers in client mode. This will break client mode for images that
don't include wpa_supplicant or wpad, so maybe I need to add a check
somewhere to see if wpa_supplicant is available, and show the user a
warning if he tries client mode without wpa_supplicant. Suggestions on
where to add this check are welcome.

Tested with ath5k in client mode on open and wpa2-psk network, and
tested on my ath9k based AP as well to make sure it doesn't break AP mode.

SVN-Revision: 19718

diff --git a/package/hostapd/files/wpa_supplicant.sh b/package/hostapd/files/wpa_supplicant.sh
index ccf31baa903c01dc844b358281485bb8e80a8690..97a00829dab82570c16eb635a25e4d1f657a2ee3 100644 (file)
--- a/package/hostapd/files/wpa_supplicant.sh
+++ b/package/hostapd/files/wpa_supplicant.sh
@@ -6,7 +6,10 @@ wpa_supplicant_setup_vif() {
        # wpa_supplicant should use wext for mac80211 cards
        [ "$driver" = "mac80211" ] && driver='wext'
 
-       # make sure we have the psk
+       # make sure we have the encryption type and the psk
+       [ -n "$enc" ] || {
+               config_get enc "$vif" encryption
+       }
        [ -n "$key" ] || {
                config_get key "$vif" key
        }

diff --git a/package/mac80211/files/lib/wifi/mac80211.sh b/package/mac80211/files/lib/wifi/mac80211.sh
index 27e234d83f88397f8079be11ba46aa7822a9aa1c..257277a2805e587bc14253c70be2faeefd3eecb2 100644 (file)
--- a/package/mac80211/files/lib/wifi/mac80211.sh
+++ b/package/mac80211/files/lib/wifi/mac80211.sh
@@ -234,7 +234,6 @@ enable_mac80211() {
                }
                config_set "$vif" ifname "$ifname"
 
-               config_get enc "$vif" encryption
                config_get mode "$vif" mode
                config_get ssid "$vif" ssid
 
@@ -288,60 +287,19 @@ enable_mac80211() {
                [ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
                config_set "$vif" macaddr "$vif_mac"
 
-               # Valid values are:
-               # wpa / wep / none
-               #
                # !! ap !!
                #
                # ALL ap functionality will be passed to hostapd
                #
-               # !! mesh / adhoc / station !!
-               # none -> NO encryption
+               # !! station !!
                #
-               # wep + keymgmt = '' -> we use iw to connect to the
-               # network.
+               # ALL station functionality will be passed to wpa_supplicant
                #
-               # wep + keymgmt = 'NONE' -> wpa_supplicant will be
-               # configured to handle the wep connection
                if [ ! "$mode" = "ap" ]; then
                        # We attempt to set the channel for all interfaces, although
                        # mac80211 may not support it or the driver might not yet
                        # for ap mode this is handled by hostapd
                        [ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
-
-                       local key keystring
-
-                       case "$enc" in
-                               *none*)
-                                       config_get keymgmt "$vif" keymgmt
-                               ;;
-                               *wep*)
-                                       config_get keymgmt "$vif" keymgmt
-                                       if [ -z "$keymgmt" ]; then
-                                               config_get key "$vif" key
-                                               key="${key:-1}"
-                                               case "$key" in
-                                                       [1234])
-                                                               for idx in 1 2 3 4; do
-                                                                       local zidx
-                                                                       zidx=$(($idx - 1))
-                                                                       config_get ckey "$vif" "key${idx}"
-                                                                       if [ -n "$ckey" ]; then
-                                                                               [ $idx -eq $key ] && zidx="d:${zidx}"
-                                                                               append keystring "${zidx}:$(prepare_key_wep "$ckey")"
-                                                                       fi
-                                                               done
-                                                               ;;
-                                                       *)
-                                                               keystring="d:0:$(prepare_key_wep "$key")"
-                                                               ;;
-                                               esac
-                                       fi
-                               ;;
-                               *psk*|*wpa*)
-                                       config_get key "$vif" key
-                               ;;
-                       esac
                fi
 
                # txpower is not yet implemented in iw
@@ -363,60 +321,26 @@ enable_mac80211() {
 
                ifconfig "$ifname" up
 
-               [ "$mode" = "ap" ] || mac80211_start_vif "$vif" "$ifname"
-
-               case "$mode" in
-                       adhoc)
-                               config_get bssid "$vif" bssid
-                               iw dev "$ifname" ibss join "$ssid" $freq ${fixed:+fixed-freq} $bssid
-                       ;;
-                       sta|mesh)
-                               config_get bssid "$vif" bssid
-                               case "$enc" in
-                                       *wep*)
-                                               if [ -z "$keymgmt" ]; then
-                                                       [ -n "$keystring" ] &&
-                                                               iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid key $keystring
-                                               else
-                                                       if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
-                                                               wpa_supplicant_setup_vif "$vif" wext || {
-                                                                       echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
-                                                                       # make sure this wifi interface won't accidentally stay open without encryption
-                                                                       ifconfig "$ifname" down
-                                                                       continue
-                                                               }
-                                                       fi
-                                               fi
-                                       ;;
-                                       *wpa*|*psk*)
-                                               config_get key "$vif" key
-                                               if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
-                                                       wpa_supplicant_setup_vif "$vif" wext || {
-                                                               echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
-                                                               # make sure this wifi interface won't accidentally stay open without encryption
-                                                               ifconfig "$ifname" down
-                                                               continue
-                                                       }
-                                               fi
-                                       ;;
-                                       *)
-                                               if [ -z "$keymgmt" ]; then
-                                                       iw dev "$ifname" connect "$ssid" ${fixed:+$freq} $bssid
-                                               else
-                                                       if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
-                                                               wpa_supplicant_setup_vif "$vif" wext || {
-                                                                       echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
-                                                                       # make sure this wifi interface won't accidentally stay open without encryption
-                                                                       ifconfig "$ifname" down
-                                                                       continue
-                                                               }
-                                                       fi
-                                               fi
-                                       ;;
-                               esac
+               if [ ! "$mode" = "ap" ]; then
+                       mac80211_start_vif "$vif" "$ifname"
 
-                       ;;
-               esac
+                       case "$mode" in
+                               adhoc)
+                                       config_get bssid "$vif" bssid
+                                       iw dev "$ifname" ibss join "$ssid" $freq ${fixed:+fixed-freq} $bssid
+                               ;;
+                               sta)
+                                       if eval "type wpa_supplicant_setup_vif" 2>/dev/null >/dev/null; then
+                                               wpa_supplicant_setup_vif "$vif" wext || {
+                                                       echo "enable_mac80211($device): Failed to set up wpa_supplicant for interface $ifname" >&2
+                                                       # make sure this wifi interface won't accidentally stay open without encryption
+                                                       ifconfig "$ifname" down
+                                                       continue
+                                               }
+                                       fi
+                               ;;
+                       esac
+               fi
        done
 
        local start_hostapd=