Linux Interface Bonding on Wireless Link (OpenWrt / LEDE)

wireless-link-bonding.sh

# Linux Interface Bonding on Wireless Link (OpenWrt / LEDE)
# Attention: This was not tested yet.

# Important: WLAN Interfaces must be AP - STA, it does not work in ad-hoc - infraestructure mode.

# This "Adds" two interfaces in to one. In this sample we are using Wireless Interfaces

# Should be equally configured on both ends, even the hash function for the distribution of data packets

# Intallation of required packages:
opkg update
opkg install kmod-bonding ifenslave 

# You will probably have configured something like this
# - wireless.radio0 and wireless.@wifi-iface[0].network='lan' at 2.4Ghz
# - wireless.radio1 and wireless.@wifi-iface[1].network='lan' at 5Ghz
# probably you had also WDS because your both ends wifi chipsets are from same vendor, or if not, you have properly installed RelayD, and may be also IGMPProxy too in order to simulate transparent link
# You could have radio0 enabled and working and radio1 disabled for now to avoid errores.

uci del wireless.@wifi-iface[0].network
uci del wireless.@wifi-iface[1].network

# Idk if is necessary to set on wifi-ifaces too
uci set wireless.@wifi-iface[0].network='wifi0' # radio0
uci set wireless.@wifi-iface[1].network='wifi1' # radio1

# Create new interfaces for bonding:
uci set network.wifi0='interface'
uci set network.wifi0.ifname='wlan0' # You may need to check using ifconfig and may use 'wlan0-1' if is not your first one
uci set network.wifi0.proto='none'

uci set network.wifi1='interface'
uci set network.wifi1.ifname='wlan1' # may need 'wlan1-1', or 'wlan1-2' if is the second or third
uci set network.wifi1.proto='none'

uci set network.bondlan='interface'
uci set network.bondlan.ifname='bond0'
uci set network.bondlan.proto='static'
uci set network.bondlan.ipaddr='192.168.x.x' # Complete correctly
uci set network.bondlan.netmask='255.255.0.0' # Complete correctly
uci set network.bondlan.dns='192.168.1.1' # Complete correctly

# Now configure the kernel module in /etc/modules.d/40-bonding
# Parameters: mode = balance-rr (default)
# try other modes: http://www.cyberciti.biz/howto/question/static/linux-ethernet-bonding-driver-howto.php 

# enable bonding at boot, idk if could be elsewhere in better place
cat<<'EOF' > /etc/rc.local
#!/bin/sh
ifenslave bond0 wlan0 wlan1
exit 0
EOF
chmod +x /etc/rc.local

# taken from: https://wiki.opennet-initiative.de/wiki/Link_Aggregation
# more interesting info at: http://linux-ip.net/html/ether-bonding.html
# method using sysfs without ifenslave: https://backdrift.org/manage-linux-bonding-without-ifenslave-using-sysfs