====== WLAN ======
:!: Config-files don't have any security-params enabled (e.g. WLAN-security/authentification in HostAPd), these are only a start for quick testing
===== internal =====
in Kernel 4.4.70 code is available, but must be activated
[[https://github.com/BPI-SINOVOIP/BPI-R2-bsp/tree/master/vendor/mediatek/connectivity|GitHub]]
[[http://forum.banana-pi.org/t/2-4ghz-and-5-6ghz-wifi-working-fine/3844/32|Forum]]
[[https://github.com/BPI-SINOVOIP/BPI-R2-bsp/commit/6b9512b853b1efc66109a41a0108579dcc9e054c|Patch]] [[https://github.com/BPI-SINOVOIP/BPI-R2-bsp/commit/219be3221aadb2d316557df8064bb231ca46ed51|Patch #2]]
:!: wpasupplicant must be removed and hostapd+dnsmasq installed:
apt-get remove wpasupplicant
apt-get install hostapd dnsmasq
{{ https://github.com/BPI-SINOVOIP/BPI-R2-bsp/tree/master/vendor/mediatek/connectivity/config | copy cfg to /system/etc/firmware/}}
{{ :bpi-r2:r2_wifi_helper.zip | helper-applications for next steps (unpack to /usr/bin)}} and {{ :bpi-r2:r2-firmware.zip | Firmware (unpack to /etc/firmware/)}} from [[https://github.com/BPI-SINOVOIP/BPI-R2-bsp/tree/master/vendor/mediatek/connectivity|here]]
- wmt_loader
- stp_uart_launcher -p /etc/firmware &
- load driver module (if compiled as module 5.4+): modprobe wlan_gen2
- echo A >/dev/wmtWifi (activate AP-Mode)
in last step ap-device (Accesspoint) will be created, which can be used by hostapd
[14:14] root@bpi-r2:~# ifconfig -a|grep Link
ap0 Link encap:Ethernet HWaddr 02:08:22:68:39:ff
bond0 Link encap:Ethernet HWaddr e2:7c:e0:71:31:c1
eth0 Link encap:Ethernet HWaddr 08:00:00:00:00:00
inet6 addr: fe80::a00:ff:fe00:0/64 Scope:Link
eth1 Link encap:Ethernet HWaddr 08:00:00:00:00:01
inet6 addr: fe80::a00:ff:fe00:1/64 Scope:Link
lo Link encap:Local Loopback
sit0 Link encap:IPv6-in-IPv4
tunl0 Link encap:IPIP Tunnel HWaddr
wlan0 Link encap:Ethernet HWaddr 00:08:22:68:39:ff
/etc/hostapd/hostapd.conf:
hw_mode=g
interface=ap0
driver=nl80211
channel=1
auth_algs=1
ssid=test
start hostapd
hostapd -dd /etc/hostapd/hostapd.conf
interface can now be further configured and DHCP-Server configured and started: [[#ip-configuration]]
{{ :bpi-r2:wifi_enable.sh | old Script to start-up wireless AP}}
{{ :bpi-r2:wifi.sh |}}
==== client-mode ====
Afair only working in vendor kernel versions (4.4,4.14)
http://forum.banana-pi.org/t/topic/5548
works with 4.14-mt6625 branch (4.14.32 + vendor-code + fixes)
apt install wpasupplicant
/usr/bin/wmt_loader
/usr/bin/stp_uart_launcher -p /etc/firmware &
echo 1 >/dev/wmtWifi
/etc/wpa_supplicant/wpa_supplicant.conf:
network={
ssid="ssid"
psk="12345678"
priority=1
}
wpa_supplicant -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf
dhclient wlan0
==== Kernel 4.14 ====
code from 4.4.70 has been merged to [[https://github.com/frank-w/BPI-R2-4.14|my github-repo]]
wifi-configuration is the same as in Kernel 4.4 [[#internal]]
discussion here: [[http://forum.banana-pi.org/t/r2-internal-wifi-bt-mt6625l-kernel-4-14-x-4-15/4307|forum]]
systemd init script here: http://forum.banana-pi.org/t/bpi-r2-internal-wifi-bt-mt6625l-kernel/4307/281
==== known issues ====
=== random numbers ===
after a (Re-)boot the random-number generator not filled enough, so that connection-attempts will be rejected.
in the hostapd-log there are entries like this:
random: Cannot read from /dev/random: Resource temporarily unavailable
random: Got 0/14 bytes from /dev/random
random: Only 6/20 bytes of strong random data available from /dev/random
random: Not enough entropy pool available for secure operations
WPA: Not enough entropy in random pool to proceed - reject first 4-way handshake
...
WPA: Reject 4-way handshake to collect more entropy for random number generation
random: Mark internal entropy pool to be ready (count=1/2)
...
random: Cannot read from /dev/random: Resource temporarily unavailable
random: Got 0/14 bytes from /dev/random
random: Only 6/20 bytes of strong random data available from /dev/random
random: Allow operation to proceed based on internal entropy
http://forum.banana-pi.org/t/bpi-r2-new-image-release-ubuntu-16-04-v1-3-2018-3-30/5293/25
apt-get install rng-tools
echo 'HRNGDEVICE=/dev/urandom' >> /etc/default/rng-tools
=== init failed ===
root@bpi-iot-ros-ai:~# wmt_loader init combo device
Opened combo device
get device id : 30243
set device id : 30243
do module init: 30243
failed to init module
This can be ignored because the combo-driver tries to init wifi,bt,gps and fm. Last 2 fail because driver does not support them.
=== stpnode ===
Can't open device node(/dev/stpwmt) error:-1
//in dmesg:
[WMT-DEV][W]WMT_open:wait_event_timeout (2000)ms,(200)jiffies,return -EIO
reboot fixed that...reason still unclear
Also this can be tried:
apt-get install network-manager
sudo nmcli radio wifi off
rfkill unblock 1
rfkill unblock 2
=== no traffic ===
Kernelmodules SCH_FQ / SCH_FQ_CODEL are known breaking ap0-functionality
maybe there are some kalHifAhbKalWakeLockTimeout messages in dmesg
maybe NETFILTER_XT_TARGET_NFQUEUE does have similar effects ([[http://forum.banana-pi.org/t/bpi-r2-integrated-wifi-trouble/10564/43?u=frank-w|see here]])
=== rcu_stall ===
this is maybe caused by net.ifnames=0
[ 437.885886] [MTK-WIFI] WIFI_open: WIFI_open: major 155 minor 0 (pid 2614)
[ 437.892961] [MTK-WIFI] WIFI_write: WIFI_write A
[ 437.892961]
[ 437.938648] kalFirmwareImageMapping firmware size 225840
[ 439.132189] [MTK-WIFI] register_set_p2p_mode_handler: (pid 2620) register set p2p mode handler b6888aac
[ 439.141960] [MTK-WIFI] WIFI_write: WMT turn on WIFI success!
[ 460.170441] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
hang occours in kalioctl (drivers/misc/mediatek/connectivity/wlan/gen2/os/linux/gl_kal.c) while calling kernel-function down_interruptible (kernel/locking/semaphore.c), semaphore is created correctly in drivers/misc/mediatek/connectivity/wlan/gen2/os/linux/gl_init.c (sema_init(&prGlueInfo->ioctl_sem, 1);)
solution: do not use net.ifnames in cmdline and use [[.:network:start#interface-name|udev-renaming]]
=== driver hang ===
check if there is a wlan0 device before starting wifi.sh/manual init of ap0 device.
driver will hang after message
[MTK-WIFI] WIFI_write: WMT turn on WIFI success
if there is a wlan0 interface not mapped to the mt6625l driver (maybe pcie/usb-wifi-device).
rootcause is adding a handler to wrong netdev searched with hardcoded wlan0 in drivers/misc/mediatek/connectivity/common/conn_soc/linux/pub/wmt_chrdev_wifi.c
#define WLAN_IFACE_NAME "wlan0"
static INT8 *ifname = WLAN_IFACE_NAME;
netdev = dev_get_by_name(&init_net, ifname);
pf_set_p2p_mode(netdev, p2pmode);
you can rename existing wlan0 to anything else before starting ap0 init
ip link set wlan0 name wlan_2g
ip link set wlan1 name wlan_5g
did this with my mt7615 (dbdc mode) and wifi init finished with success in linux 5.10
=== client-mode does not work ===
client mode does not work in 4.9+
http://forum.banana-pi.org/t/bpi-r2-internal-wifi-bt-mt6625l-kernel/4307/293
i tested wifi-client in 5.10, here it is working with config posted here:
http://forum.banana-pi.org/t/bpi-r2-internal-wifi-bt-mt6625l-kernel/4307/329
===== external =====
==== MT7612 ====
FIXME
[[https://de.aliexpress.com/item/MTK-MT7612E-2x2-802-11ac-b-g-n-Enterprise-867Mbps-MiniPCIE-NIC-PCBA-ODM-OEM/32817460933.html|mt7612e on AliExpress]]
firmware neeeded: https://packages.debian.org/buster/firmware-misc-nonfree
=== 4.4.70 ===
[[http://forum.banana-pi.org/t/need-help-porting-mt76-driver-to-r2-kernel/3954/32|forum]]
git clone https://github.com/BPI-SINOVOIP/BPI-R2-bsp.git bpi_r2_mt76
cd bpi_r2_mt76/
cd linux-mt/drivers/net/wireless/mediatek
git clone https://github.com/dfiloni/mt76.git
cd ../../../.. #bpi_r2_mt76/linux-mt/
patch -p1 < drivers/net/wireless/mediatek/mt76/kernel-patches/0001-add-basic-register-field-manipulation-macros.patch
nano drivers/net/wireless/mediatek/Makefile
#add: obj-$(CONFIG_MT76) += mt76/
nano drivers/net/wireless/mediatek/Kconfig
#add before endif: before endif # WL_MEDIATEK: source "drivers/net/wireless/mediatek/mt76/Kconfig"
cd ..
./build.sh => 4
#networking support => wireless => Generic IEEE 802.11 Networking Stack (mac80211)
#Device Drivers => Network device support => Wireless LAN => [*] Mediatek Wireless LAN support => MediaTek MT76x2 802.11ac chips support
./build.sh => 1
cp SD/BPI-BOOT/bananapi/bpi-r2/linux/uImage /media/$USER/BPI-BOOT/bananapi/bpi-r2/linux/uImage
sudo cp -r SD/BPI-ROOT/lib/modules /media/$USER/BPI-ROOT/lib/
cp linux-mt/drivers/net/wireless/mediatek/mt76/firmware/* /media/$USER/BPI-ROOT/lib/firmware/
#scp linux-mt/drivers/net/wireless/mediatek/mt76/firmware/* root@192.168.0.10:/lib/firmware/
sync
=== 4.14 ===
Kernel 4.14 (in progress...):
import {{ :bpi-r2:pcie.patch |PCIe-patch}}, if not done yet
patch -p1 < pcie.patch
cd drivers/net/wireless/mediatek/
git clone https://github.com/openwrt/mt76.git
* in mt76/mt7603.h missing "#include "
* in mt76/mac80211.c missing "#include "
* in Makefile missing "CFLAGS_trace.o := -I$(src)" und "CFLAGS_mt76x2_trace.o := -I$(src)"
* and include code in drivers/net/wireless/mediatek/Makefile obj-$(CONFIG_MT76) += mt76/
and drivers/net/wireless/mediatek/Kconfig source "drivers/net/wireless/mediatek/mt76/Kconfig"
unpack {{ :bpi-r2:mt76_4.14.tar.gz | full driver-code for mt76x2 + mt76x3}} to drivers/net/wireless/mediatek/
activate following modules in kernel:
CONFIG_MAC80211=m
CONFIG_CFG80211=m
CONFIG_MT76=m
#pcie
CONFIG_PCIEPORTBUS=y
CONFIG_PCIE_MEDIATEK=y
CONFIG_PHY_MTK_TPHY=y
copy the firmware
sudo cp drivers/net/wireless/mediatek/mt76/firmware/* /media/$USER/BPI-ROOT/lib/firmware/
=== configure ===
[10:50] root@bpi-r2:~# ifconfig -a |grep wlan
wlan1 Link encap:Ethernet HWaddr f8:62:aa:50:12:1d <<<
if your wlan-device-number is above 1, you can edit that with
nano /etc/udev/rules.d/70-persistent-net.rules
/etc/hostapd/hostapd.conf (change interface)
interface=wlan1
#interface=ap0
driver=nl80211
ssid=r2_AP1
hw_mode=g
channel=1
#macaddr_acl=0
auth_algs=1
#ignore_broadcast_ssid=0
#wpa=2
#wmm_enabled=1
#wpa_passphrase=12345678
#wpa_key_mgmt=WPA-PSK
#wpa_pairwise=TKIP
#rsn_pairwise=CCMP
{{ :bpi-r2:hostapd_wlan1.conf | /etc/hostapd/hostapd_wlan1.conf }}
start hostapd (Debugmode):
hostapd -dd /etc/hostapd/hostapd.conf
set IP-address and start dnsmasq:
[[#ip-configuration]]
==== MT7615 ====
[[https://github.com/openwrt/mt76/tree/master/firmware|firmware-files]] to /lib/firmware/mediatek/
http://forum.banana-pi.org/t/802-11ac-4x4-standard-size-mini-pcie-card-is-launched/11545/15?u=frank-w
I have added mt7615 driver in 5.4 on nov 19 2020 (should be 5.4.78).
Mt7615 is separate kernel-module which needs to be loaded
modprobe mt7615e
=== dual-ap ===
Dbdc mode was added in 5.7
echo 1 > /sys/kernel/debug/ieee80211/phy0/mt76/dbdc
There is a report that dbdc cannot be enabled after reboot,but on [[http://forum.banana-pi.org/t/802-11ac-4x4-standard-size-mini-pcie-card-is-launched/11545/23|my tests]] this works without problems
You can only enable 2.4ghz on phy0, and 5ghz on phy1 simultaneously.
=== antenna connectors ===
WF0-1 are for phy0, and WF2-3 are for phy1.
http://forum.banana-pi.org/t/802-11ac-4x4-standard-size-mini-pcie-card-is-launched/11545/16
===== HostAPd =====
{{ :bpi-r2:hostapd.conf | /etc/hostapd/hostapd.conf}}
{{ :bpi-r2:hostapd_wlan1.conf | /etc/hostapd/hostapd_wlan1.conf }}
==== 5GHz ====
apt-get install iw
iw list | grep "Supported interface modes" -A 8
apt-get install iw wireless-regdb crda
=== country code ===
setting Country-Code (regulary domain) can be a bit tricky
iw reg set ISO_3166-1_alpha-2
iw reg set DE
iw reg get
wrong output:
global
country 00: DFS-UNSET
correct:
global
country US: DFS-ETSI
maybe try this:
modprobe cfg80211 ieee80211_regdom=US
COUNTRY=US crda
$ sudo nano /etc/modprobe.d/cfg80211.conf
options cfg80211 ieee80211_regdom=US
=== possible frequencies ===
iw list | grep MHz
=== Hostapd-Configuration ===
$ sudo nano /etc/hostapd/hostapd.conf
[...]
country_code=US
ieee80211n=1
ieee80211d=1
hw_mode=a
channel=48
[...]
[[https://www.tobias-bauer.de/hostapd-auf-5-ghz.html|Config-Examples taken from here (DE)]]
[[http://www.arubanetworks.com/techdocs/InstantWenger_Mobile/Advanced/Content/Instant%20User%20Guide%20-%20volumes/Country_Codes_List.htm#regulatory_domain_3737302751_1017918|CountryCode-List]]
===== IP-Configuration =====
set IP-address:
#set IP and start
ip addr add 192.168.10.1/24 dev ap0
#ip link set dev ap0 up
ip addr add 192.168.11.1/24 dev wlan1
/etc/dnsmasq.conf (activate line by removing # on begin of line)
conf-dir=/etc/dnsmasq.d
/etc/dnsmasq.d/interfaces.conf
#interface=eth0
interface=wlan0
#interface=eth1
interface=ap0
# DHCP-Server not active for Interface
#no-dhcp-interface=ppp0
no-dhcp-interface=eth0
no-dhcp-interface=eth1
#dhcp-authoritative
dhcp-range=ap0,192.168.10.100,192.168.10.150,255.255.255.0,48h
dhcp-option=ap0,3,192.168.10.1
dhcp-range=wlan1,192.168.11.100,192.168.11.150,255.255.255.0,48h
dhcp-option=wlan1,3,192.168.11.1
#special handling of some hosts (here using another dns-server)
#dhcp-host=ap0,x:y:z:x:y:z,frank,set:specialhosts,192.168.10.27,12h
dhcp-option=tag:specialhosts,option:dns-server,192.168.0.11,8.8.4.4
{{ :bpi-r2:interfaces.conf | /etc/dnsmasq.d/interfaces.conf }}
service dnsmasq start
==== Routing ====
nano /etc/sysctl.conf
#activate net.ipv4.ip_forward=1 and net.ipv6.conf.all.forwarding=1 by removing # at beginning of line
sysctl -p /etc/sysctl.conf
if the BPI-R2 is not the main-router (access to internet), it is neccessary, that this main-router knows the networks (wlan) behind the R2.
The following commands must be entered on a (Debian-)Router, to append the networks to its routing-table (will be lost on reboot if not executed on boot):
route add -net 192.168.10.0 netmask 255.255.255.0 gw 192.168.0.10
route add -net 192.168.11.0 netmask 255.255.255.0 gw 192.168.0.10
here is 192.168.10.0 the 1st WLAN, 192.168.11.0 the 2nd WLAN and 192.168.0.10 is the LAN-IP of the BPI-R2 (same subnet as LAN-IP from main-router)