Technologic Systems TS-7100 Series Manual page 11

2/11/2020
Systemd auto-start with bridge to eth0
It is possible to configure the auto-start of 'hostapd' through systemd. The configuration outlined below will set up a
bridge with "eth0", meaning the Wi-Fi connection is directly connected to the ethernet network. The ethernet
network is required to have a DHCP server present and active on it to assign Wi-Fi clients an IP address. This setup
will allow Wi-Fi clients access to the same network as the ethernet port, and the bridge interface will allow the
platform itself to access the network.
Set up hostapd
First, create the file "/etc/systemd/system/hostapd_user.service" with the following contents:
[Unit]
Description=Hostapd IEEE 802.11 AP
Wants=network.target
Before=network.target
Before=network.service
After=sys-subsystem-net-devices-wlan0.device
After=sys-subsystem-net-devices-br0.device
BindsTo=sys-subsystem-net-devices-wlan0.device
BindsTo=sys-subsystem-net-devices-br0.device
[Service]
Type=forking
PIDFile=/run/hostapd.pid
ExecStart=/usr/sbin/hostapd /etc/hostapd/hostapd.conf
[Install]
WantedBy=multi-user.target
Then enable this in systemd:
systemctl enable hostapd_user.service
systemctl enable systemd-networkd
Set up bridging
Create the following files with the listed contents.
"/etc/systemd/network/br0.netdev"
[NetDev]
Name=br0
Kind=bridge
"/etc/systemd/network/br0.network"
[Match]
Name=br0
[Network]
DHCP=yes
https://wiki.embeddedarm.com/w/index.php?title=TS-7100&printable=yes
TS-7100 - Technologic Systems Manuals
-P /run/hostapd.pid -B
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