From 2f5a5497be451465c17e6134a10923ff18fbc32b Mon Sep 17 00:00:00 2001
From: Hamish Guthrie <hcg@openwrt.org>
Date: Fri, 25 Jun 2010 08:11:54 +0000
Subject: [PATCH] Add script support for Marvell 88W8686 mac80211. This is a
 hack now, but it works. cfg80211 is very broken in the current mainline
 Marvell driver. A new patch set to address this is in linux-next, I just do
 not have time today to address it.

SVN-Revision: 21899
---
 .../gumstix/base-files/lib/wifi/mac80211.sh   | 437 ++++++++++++++++++
 1 file changed, 437 insertions(+)
 create mode 100644 target/linux/omap35xx/gumstix/base-files/lib/wifi/mac80211.sh

diff --git a/target/linux/omap35xx/gumstix/base-files/lib/wifi/mac80211.sh b/target/linux/omap35xx/gumstix/base-files/lib/wifi/mac80211.sh
new file mode 100644
index 0000000000..53910efcd3
--- /dev/null
+++ b/target/linux/omap35xx/gumstix/base-files/lib/wifi/mac80211.sh
@@ -0,0 +1,437 @@
+#!/bin/sh
+append DRIVERS "mac80211"
+
+mac80211_hostapd_setup_base() {
+	local phy="$1"
+	local ifname="$2"
+	
+	cfgfile="/var/run/hostapd-$phy.conf"
+	config_get device "$vif" device
+	config_get country "$device" country
+	config_get hwmode "$device" hwmode
+	config_get channel "$device" channel
+	config_get_bool noscan "$device" noscan
+	[ -n "$channel" -a -z "$hwmode" ] && wifi_fixup_hwmode "$device"
+	[ "$channel" = auto ] && channel=
+	[ -n "$hwmode" ] && {
+		config_get hwmode_11n "$device" hwmode_11n
+		[ -n "$hwmode_11n" ] && {
+			hwmode="$hwmode_11n"
+			append base_cfg "ieee80211n=1" "$N"
+			config_get htmode "$device" htmode
+			config_get ht_capab_list "$device" ht_capab
+			case "$htmode" in
+				HT20|HT40+|HT40-) ht_capab="[$htmode]";;
+				*)ht_capab=;;
+			esac
+			for cap in $ht_capab_list; do
+				ht_capab="$ht_capab[$cap]"
+			done
+			[ -n "$ht_capab" ] && append base_cfg "ht_capab=$ht_capab" "$N"
+		}
+	}
+	cat > "$cfgfile" <<EOF
+ctrl_interface=/var/run/hostapd-$phy
+driver=nl80211
+wmm_ac_bk_cwmin=4
+wmm_ac_bk_cwmax=10
+wmm_ac_bk_aifs=7
+wmm_ac_bk_txop_limit=0
+wmm_ac_bk_acm=0
+wmm_ac_be_aifs=3
+wmm_ac_be_cwmin=4
+wmm_ac_be_cwmax=10
+wmm_ac_be_txop_limit=0
+wmm_ac_be_acm=0
+wmm_ac_vi_aifs=2
+wmm_ac_vi_cwmin=3
+wmm_ac_vi_cwmax=4
+wmm_ac_vi_txop_limit=94
+wmm_ac_vi_acm=0
+wmm_ac_vo_aifs=2
+wmm_ac_vo_cwmin=2
+wmm_ac_vo_cwmax=3
+wmm_ac_vo_txop_limit=47
+wmm_ac_vo_acm=0
+tx_queue_data3_aifs=7
+tx_queue_data3_cwmin=15
+tx_queue_data3_cwmax=1023
+tx_queue_data3_burst=0
+tx_queue_data2_aifs=3
+tx_queue_data2_cwmin=15
+tx_queue_data2_cwmax=63
+tx_queue_data2_burst=0
+tx_queue_data1_aifs=1
+tx_queue_data1_cwmin=7
+tx_queue_data1_cwmax=15
+tx_queue_data1_burst=3.0
+tx_queue_data0_aifs=1
+tx_queue_data0_cwmin=3
+tx_queue_data0_cwmax=7
+tx_queue_data0_burst=1.5
+${hwmode:+hw_mode=$hwmode}
+${channel:+channel=$channel}
+${country:+country_code=$country}
+${noscan:+noscan=$noscan}
+$base_cfg
+
+EOF
+}
+
+mac80211_hostapd_setup_bss() {
+	local phy="$1"
+	local vif="$2"
+
+	hostapd_cfg=
+	cfgfile="/var/run/hostapd-$phy.conf"
+	config_get ifname "$vif" ifname
+
+	if [ -f "$cfgfile" ]; then
+		append hostapd_cfg "bss=$ifname" "$N"
+	else
+		mac80211_hostapd_setup_base "$phy" "$ifname"
+		append hostapd_cfg "interface=$ifname" "$N"
+	fi
+
+	local net_cfg bridge
+	net_cfg="$(find_net_config "$vif")"
+	[ -z "$net_cfg" ] || bridge="$(bridge_interface "$net_cfg")"
+	config_set "$vif" bridge "$bridge"
+
+	hostapd_set_bss_options hostapd_cfg "$vif"
+
+	config_get_bool wds "$vif" wds 0
+	[ "$wds" -gt 0 ] && append hostapd_cfg "wds_sta=1" "$N"
+
+	config_get macaddr "$vif" macaddr
+	config_get_bool hidden "$vif" hidden 0
+	cat >> /var/run/hostapd-$phy.conf <<EOF
+$hostapd_cfg
+wmm_enabled=1
+bssid=$macaddr
+ignore_broadcast_ssid=$hidden
+EOF
+}
+
+mac80211_start_vif() {
+	local vif="$1"
+	local ifname="$2"
+
+	local net_cfg
+	net_cfg="$(find_net_config "$vif")"
+	[ -z "$net_cfg" ] || start_net "$ifname" "$net_cfg"
+
+	set_wifi_up "$vif" "$ifname"
+}
+
+find_mac80211_phy() {
+	local device="$1"
+
+	local macaddr="$(config_get "$device" macaddr | tr 'A-Z' 'a-z')"
+	config_get phy "$device" phy
+	[ -z "$phy" -a -n "$macaddr" ] && {
+		for phy in $(ls /sys/class/ieee80211 2>/dev/null); do
+			[ "$macaddr" = "$(cat /sys/class/ieee80211/${phy}/macaddress)" ] || continue
+			config_set "$device" phy "$phy"
+			break
+		done
+		config_get phy "$device" phy
+	}
+	[ -n "$phy" -a -d "/sys/class/ieee80211/$phy" ] || {
+		echo "PHY for wifi device $1 not found"
+		return 1
+	}
+	[ -z "$macaddr" ] && {
+		config_set "$device" macaddr "$(cat /sys/class/ieee80211/${phy}/macaddress)"
+	}
+	return 0
+}
+
+scan_mac80211() {
+	local device="$1"
+	local adhoc sta ap monitor mesh
+	
+	config_get vifs "$device" vifs
+	for vif in $vifs; do
+		config_get mode "$vif" mode
+		case "$mode" in
+			adhoc|sta|ap|monitor|mesh)
+				append $mode "$vif"
+			;;
+			*) echo "$device($vif): Invalid mode, ignored."; continue;;
+		esac
+	done
+
+	config_set "$device" vifs "${ap:+$ap }${adhoc:+$adhoc }${sta:+$sta }${monitor:+$monitor }${mesh:+$mesh}"
+}
+
+
+disable_mac80211() (
+	local device="$1"
+
+	find_mac80211_phy "$device" || return 0
+	config_get phy "$device" phy
+
+	set_wifi_down "$device"
+	# kill all running hostapd and wpa_supplicant processes that
+	# are running on atheros/mac80211 vifs
+	for pid in `pidof hostapd`; do
+		grep -E "$phy" /proc/$pid/cmdline >/dev/null && \
+			kill $pid
+	done
+
+	include /lib/network
+	for wdev in $(ls /sys/class/ieee80211/${phy}/device/net 2>/dev/null); do
+		[ -f "/var/run/$wdev.pid" ] && kill $(cat /var/run/$wdev.pid) >&/dev/null 2>&1
+		for pid in `pidof wpa_supplicant`; do
+			grep "$wdev" /proc/$pid/cmdline >/dev/null && \
+				kill $pid
+		done
+		ifconfig "$wdev" down 2>/dev/null
+		unbridge "$dev"
+		iw dev "$wdev" del
+	done
+
+	return 0
+)
+get_freq() {
+	local phy="$1"
+	local chan="$2"
+	
+	iw "$phy" info | grep -E -m1 "(\* ${chan:-....} MHz${chan:+|\\[$chan\\]})" | grep MHz | awk '{print $2}'
+}
+
+enable_mac80211() {
+	local device="$1"
+	config_get channel "$device" channel
+	config_get vifs "$device" vifs
+	config_get txpower "$device" txpower
+	config_get country "$device" country
+	config_get distance "$device" distance
+	find_mac80211_phy "$device" || return 0
+	config_get phy "$device" phy
+	local i=0
+	local macidx=0
+	local apidx=0
+	fixed=""
+
+	[ -n "$country" ] && iw reg set "$country"
+	[ "$channel" = "auto" -o "$channel" = "0" ] || {
+		fixed=1
+	}
+
+	[ -n "$distance" ] && iw phy "$phy" set distance "$distance"
+
+	export channel fixed
+	# convert channel to frequency
+	local freq="$(get_freq "$phy" "${fixed:+$channel}")"
+
+	wifi_fixup_hwmode "$device" "g"
+	for vif in $vifs; do
+		while [ -d "/sys/class/net/wlan$i" ]; do
+			i=$(($i + 1))
+		done
+
+		config_get ifname "$device" ifname
+		[ -n "$ifname" ] || {
+			ifname="wlan0"
+		}
+		config_set "$vif" ifname "$ifname"
+
+		config_get mode "$vif" mode
+		config_get ssid "$vif" ssid
+
+		# It is far easier to delete and create the desired interface
+		case "$mode" in
+			adhoc)
+				iw phy "$phy" interface add "$ifname" type adhoc
+			;;
+			ap)
+				# Hostapd will handle recreating the interface and
+				# it's accompanying monitor
+				apidx="$(($apidx + 1))"
+				i=$(($i + 1))
+				[ "$apidx" -gt 1 ] || iw phy "$phy" interface add "$ifname" type managed
+			;;
+			mesh)
+				config_get mesh_id "$vif" mesh_id
+				iw phy "$phy" interface add "$ifname" type mp mesh_id "$mesh_id"
+			;;
+			monitor)
+				iw phy "$phy" interface add "$ifname" type monitor
+			;;
+			sta)
+				local wdsflag
+				config_get_bool wds "$vif" wds 0
+			;;
+		esac
+
+		# All interfaces must have unique mac addresses
+		# which can either be explicitly set in the device
+		# section, or automatically generated
+		config_get macaddr "$device" macaddr
+		local mac_1="${macaddr%%:*}"
+		local mac_2="${macaddr#*:}"
+
+		config_get vif_mac "$vif" macaddr
+		[ -n "$vif_mac" ] || {
+			if [ "$macidx" -gt 0 ]; then
+				offset="$(( 2 + $macidx * 4 ))"
+			else
+				offset="0"
+			fi
+			vif_mac="$( printf %02x $((0x$mac_1 + $offset)) ):$mac_2"
+			macidx="$(($macidx + 1))"
+		}
+		[ "$mode" = "ap" ] || ifconfig "$ifname" hw ether "$vif_mac"
+		config_set "$vif" macaddr "$vif_mac"
+
+		# !! ap !!
+		#
+		# ALL ap functionality will be passed to hostapd
+		#
+		# !! station !!
+		#
+		# ALL station functionality will be passed to wpa_supplicant
+		#
+		#if [ ! "$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
+		#	echo "iw dev set channel"
+		#	[ -n "$fixed" -a -n "$channel" ] && iw dev "$ifname" set channel "$channel"
+		#fi
+
+		# txpower is not yet implemented in iw
+#		config_get vif_txpower "$vif" txpower
+		# use vif_txpower (from wifi-iface) to override txpower (from
+		# wifi-device) if the latter doesn't exist
+#		txpower="${txpower:-$vif_txpower}"
+#		[ -z "$txpower" ] || iwconfig "$ifname" txpower "${txpower%%.*}"
+
+	done
+
+	local start_hostapd=
+	rm -f /var/run/hostapd-$phy.conf
+	for vif in $vifs; do
+		config_get mode "$vif" mode
+		[ "$mode" = "ap" ] || continue
+		mac80211_hostapd_setup_bss "$phy" "$vif"
+		start_hostapd=1
+	done
+
+	[ -n "$start_hostapd" ] && {
+		hostapd -P /var/run/wifi-$phy.pid -B /var/run/hostapd-$phy.conf || {
+			echo "Failed to start hostapd for $phy"
+			return
+		}
+		sleep 2
+
+		for vif in $vifs; do
+			config_get mode "$vif" mode
+			config_get ifname "$vif" ifname
+			[ "$mode" = "ap" ] || continue
+			mac80211_start_vif "$vif" "$ifname"
+		done
+	}
+
+	for vif in $vifs; do
+		config_get mode "$vif" mode
+		config_get ifname "$vif" ifname
+		[ ! "$mode" = "ap" ] || continue
+		ifconfig "$ifname" up
+
+		if [ ! "$mode" = "ap" ]; then
+			ifconfig "$ifname" up
+			case "$mode" in
+				adhoc)
+					config_get bssid "$vif" bssid
+					config_get ssid "$vif" ssid
+					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" mac80211 || {
+							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
+			mac80211_start_vif "$vif" "$ifname"
+		fi
+	done
+
+}
+
+
+check_device() {
+	config_get phy "$1" phy
+	[ -z "$phy" ] && {
+		find_mac80211_phy "$1" >/dev/null || return 0
+		config_get phy "$1" phy
+	}
+	[ "$phy" = "$dev" ] && found=1
+}
+
+detect_mac80211() {
+	devidx=0
+	config_load wireless
+	while :; do
+		config_get type "radio$devidx" type
+		[ -n "$type" ] || break
+		devidx=$(($devidx + 1))
+	done
+	for dev in $(ls /sys/class/ieee80211); do
+		found=0
+		config_foreach check_device wifi-device
+		[ "$found" -gt 0 ] && continue
+
+		mode_11n=""
+		mode_band="g"
+		channel="5"
+		ht_cap=0
+		for cap in $(iw phy "$dev" info | grep 'Capabilities:' | cut -d: -f2); do
+			ht_cap="$(($ht_cap | $cap))"
+		done
+		ht_capab="";
+		[ "$ht_cap" -gt 0 ] && {
+			mode_11n="n"
+			append ht_capab "	option htmode	HT20" "$N"
+
+			list="	list ht_capab"
+			[ "$(($ht_cap & 1))" -eq 1 ] && append ht_capab "$list	LDPC" "$N"
+			[ "$(($ht_cap & 32))" -eq 32 ] && append ht_capab "$list	SHORT-GI-20" "$N"
+			[ "$(($ht_cap & 64))" -eq 64 ] && append ht_capab "$list	SHORT-GI-40" "$N"
+			[ "$(($ht_cap & 128))" -eq 128 ] && append ht_capab "$list	TX-STBC" "$N"
+			[ "$(($ht_cap & 768))" -eq 256 ] && append ht_capab "$list	RX-STBC1" "$N"
+			[ "$(($ht_cap & 768))" -eq 512 ] && append ht_capab "$list	RX-STBC12" "$N"
+			[ "$(($ht_cap & 768))" -eq 768 ] && append ht_capab "$list	RX-STBC123" "$N"
+			[ "$(($ht_cap & 4096))" -eq 4096 ] && append ht_capab "$list	DSSS_CCK-40" "$N"
+		}
+		iw phy "$dev" info | grep -q '2412 MHz' || { mode_band="a"; channel="36"; }
+
+		cat <<EOF
+config wifi-device  radio$devidx
+	option type     mac80211
+	option channel  ${channel}
+	option macaddr	$(cat /sys/class/ieee80211/${dev}/macaddress)
+	option hwmode	11${mode_11n}${mode_band}
+$ht_capab
+	# REMOVE THIS LINE TO ENABLE WIFI:
+	option disabled 1
+
+config wifi-iface
+	option device   radio$devidx
+	option network  lan
+	option mode     ap
+	option ssid     OpenWrt
+	option encryption none
+
+EOF
+	devidx=$(($devidx + 1))
+	done
+}
+
-- 
2.30.2